622 lines
26 KiB
C++
622 lines
26 KiB
C++
/*
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* Copyright (C) 2006-2017 Apple Inc. All rights reserved.
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* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
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* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
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* Copyright (C) 2009 Adam Barth. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Apple Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "NavigationScheduler.h"
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#include "BackForwardController.h"
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#include "CommonVM.h"
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#include "DOMWindow.h"
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#include "DocumentLoader.h"
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#include "Event.h"
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#include "FormState.h"
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#include "FormSubmission.h"
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#include "Frame.h"
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#include "FrameLoadRequest.h"
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#include "FrameLoader.h"
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#include "FrameLoaderStateMachine.h"
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#include "HTMLFormElement.h"
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#include "HTMLFrameOwnerElement.h"
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#include "HistoryItem.h"
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#include "InspectorInstrumentation.h"
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#include "Logging.h"
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#include "NavigationDisabler.h"
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#include "Page.h"
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#include "PolicyChecker.h"
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#include "ScriptController.h"
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#include "UserGestureIndicator.h"
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#include <wtf/Ref.h>
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namespace WebCore {
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unsigned NavigationDisabler::s_globalNavigationDisableCount = 0;
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class ScheduledNavigation {
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WTF_MAKE_NONCOPYABLE(ScheduledNavigation); WTF_MAKE_FAST_ALLOCATED;
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public:
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ScheduledNavigation(double delay, LockHistory lockHistory, LockBackForwardList lockBackForwardList, bool wasDuringLoad, bool isLocationChange)
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: m_delay(delay)
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, m_lockHistory(lockHistory)
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, m_lockBackForwardList(lockBackForwardList)
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, m_wasDuringLoad(wasDuringLoad)
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, m_isLocationChange(isLocationChange)
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, m_userGestureToForward(UserGestureIndicator::currentUserGesture())
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{
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}
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ScheduledNavigation(double delay, LockHistory lockHistory, LockBackForwardList lockBackForwardList, bool wasDuringLoad, bool isLocationChange, ShouldOpenExternalURLsPolicy externalURLPolicy)
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: m_delay(delay)
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, m_lockHistory(lockHistory)
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, m_lockBackForwardList(lockBackForwardList)
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, m_wasDuringLoad(wasDuringLoad)
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, m_isLocationChange(isLocationChange)
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, m_userGestureToForward(UserGestureIndicator::currentUserGesture())
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, m_shouldOpenExternalURLsPolicy(externalURLPolicy)
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{
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if (auto* frame = lexicalFrameFromCommonVM()) {
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if (frame->isMainFrame())
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m_initiatedByMainFrame = InitiatedByMainFrame::Yes;
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}
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}
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virtual ~ScheduledNavigation() = default;
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virtual void fire(Frame&) = 0;
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virtual bool shouldStartTimer(Frame&) { return true; }
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virtual void didStartTimer(Frame&, Timer&) { }
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virtual void didStopTimer(Frame&, NewLoadInProgress) { }
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double delay() const { return m_delay; }
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LockHistory lockHistory() const { return m_lockHistory; }
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LockBackForwardList lockBackForwardList() const { return m_lockBackForwardList; }
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bool wasDuringLoad() const { return m_wasDuringLoad; }
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bool isLocationChange() const { return m_isLocationChange; }
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UserGestureToken* userGestureToForward() const { return m_userGestureToForward.get(); }
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protected:
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void clearUserGesture() { m_userGestureToForward = nullptr; }
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ShouldOpenExternalURLsPolicy shouldOpenExternalURLs() const { return m_shouldOpenExternalURLsPolicy; }
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InitiatedByMainFrame initiatedByMainFrame() const { return m_initiatedByMainFrame; };
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private:
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double m_delay;
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LockHistory m_lockHistory;
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LockBackForwardList m_lockBackForwardList;
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bool m_wasDuringLoad;
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bool m_isLocationChange;
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RefPtr<UserGestureToken> m_userGestureToForward;
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ShouldOpenExternalURLsPolicy m_shouldOpenExternalURLsPolicy { ShouldOpenExternalURLsPolicy::ShouldNotAllow };
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InitiatedByMainFrame m_initiatedByMainFrame { InitiatedByMainFrame::Unknown };
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};
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class ScheduledURLNavigation : public ScheduledNavigation {
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protected:
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ScheduledURLNavigation(Document& initiatingDocument, double delay, SecurityOrigin* securityOrigin, const URL& url, const String& referrer, LockHistory lockHistory, LockBackForwardList lockBackForwardList, bool duringLoad, bool isLocationChange)
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: ScheduledNavigation(delay, lockHistory, lockBackForwardList, duringLoad, isLocationChange, initiatingDocument.shouldOpenExternalURLsPolicyToPropagate())
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, m_initiatingDocument { makeRef(initiatingDocument) }
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, m_securityOrigin{ makeRefPtr(securityOrigin) }
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, m_url { url }
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, m_referrer { referrer }
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{
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}
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void didStartTimer(Frame& frame, Timer& timer) override
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{
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if (m_haveToldClient)
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return;
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m_haveToldClient = true;
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UserGestureIndicator gestureIndicator(userGestureToForward());
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Ref<Frame> protectedFrame(frame);
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frame.loader().clientRedirected(URL(m_url), delay(), WallTime::now() + timer.nextFireInterval(), lockBackForwardList());
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}
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void didStopTimer(Frame& frame, NewLoadInProgress newLoadInProgress) override
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{
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if (!m_haveToldClient)
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return;
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// Do not set a UserGestureIndicator because
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// clientRedirectCancelledOrFinished() is also called from many places
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// inside FrameLoader, where the gesture state is not set and is in
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// fact unavailable. We need to be consistent with them, otherwise the
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// gesture state will sometimes be set and sometimes not within
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// dispatchDidCancelClientRedirect().
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frame.loader().clientRedirectCancelledOrFinished(newLoadInProgress);
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}
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Document& initiatingDocument() { return m_initiatingDocument.get(); }
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SecurityOrigin* securityOrigin() const { return m_securityOrigin.get(); }
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const URL& url() const { return m_url; }
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String referrer() const { return m_referrer; }
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private:
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Ref<Document> m_initiatingDocument;
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RefPtr<SecurityOrigin> m_securityOrigin;
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URL m_url;
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String m_referrer;
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bool m_haveToldClient { false };
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};
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class ScheduledRedirect : public ScheduledURLNavigation {
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public:
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ScheduledRedirect(Document& initiatingDocument, double delay, SecurityOrigin* securityOrigin, const URL& url, LockHistory lockHistory, LockBackForwardList lockBackForwardList, IsMetaRefresh isMetaRefresh)
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: ScheduledURLNavigation(initiatingDocument, delay, securityOrigin, url, String(), lockHistory, lockBackForwardList, false, false)
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, m_isMetaRefresh(isMetaRefresh)
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{
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clearUserGesture();
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}
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bool shouldStartTimer(Frame& frame) override
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{
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return frame.loader().allAncestorsAreComplete();
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}
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void fire(Frame& frame) override
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{
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if (m_isMetaRefresh == IsMetaRefresh::Yes) {
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if (auto document = frame.document(); document && document->isSandboxed(SandboxAutomaticFeatures)) {
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document->addConsoleMessage(MessageSource::Security, MessageLevel::Error, "Unable to do meta refresh due to sandboxing"_s);
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return;
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}
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}
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UserGestureIndicator gestureIndicator { userGestureToForward() };
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bool refresh = equalIgnoringFragmentIdentifier(frame.document()->url(), url());
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ResourceRequest resourceRequest { url(), referrer(), refresh ? ResourceRequestCachePolicy::ReloadIgnoringCacheData : ResourceRequestCachePolicy::UseProtocolCachePolicy };
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if (initiatedByMainFrame() == InitiatedByMainFrame::Yes)
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resourceRequest.setRequester(ResourceRequest::Requester::Main);
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FrameLoadRequest frameLoadRequest { initiatingDocument(), *securityOrigin(), WTFMove(resourceRequest), "_self", initiatedByMainFrame() };
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frameLoadRequest.setLockHistory(lockHistory());
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frameLoadRequest.setLockBackForwardList(lockBackForwardList());
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frameLoadRequest.disableNavigationToInvalidURL();
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frameLoadRequest.setShouldOpenExternalURLsPolicy(shouldOpenExternalURLs());
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frame.loader().changeLocation(WTFMove(frameLoadRequest));
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}
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private:
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IsMetaRefresh m_isMetaRefresh;
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};
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class ScheduledLocationChange : public ScheduledURLNavigation {
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public:
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ScheduledLocationChange(Document& initiatingDocument, SecurityOrigin* securityOrigin, const URL& url, const String& referrer, LockHistory lockHistory, LockBackForwardList lockBackForwardList, bool duringLoad, CompletionHandler<void()>&& completionHandler)
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: ScheduledURLNavigation(initiatingDocument, 0.0, securityOrigin, url, referrer, lockHistory, lockBackForwardList, duringLoad, true)
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, m_completionHandler(WTFMove(completionHandler))
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{
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}
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~ScheduledLocationChange()
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{
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if (m_completionHandler)
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m_completionHandler();
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}
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void fire(Frame& frame) override
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{
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UserGestureIndicator gestureIndicator { userGestureToForward() };
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ResourceRequest resourceRequest { url(), referrer(), ResourceRequestCachePolicy::UseProtocolCachePolicy };
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FrameLoadRequest frameLoadRequest { initiatingDocument(), *securityOrigin(), WTFMove(resourceRequest), "_self", initiatedByMainFrame() };
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frameLoadRequest.setLockHistory(lockHistory());
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frameLoadRequest.setLockBackForwardList(lockBackForwardList());
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frameLoadRequest.disableNavigationToInvalidURL();
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frameLoadRequest.setShouldOpenExternalURLsPolicy(shouldOpenExternalURLs());
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auto completionHandler = std::exchange(m_completionHandler, nullptr);
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frame.loader().changeLocation(WTFMove(frameLoadRequest));
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completionHandler();
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}
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private:
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CompletionHandler<void()> m_completionHandler;
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};
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class ScheduledRefresh : public ScheduledURLNavigation {
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public:
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ScheduledRefresh(Document& initiatingDocument, SecurityOrigin* securityOrigin, const URL& url, const String& referrer)
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: ScheduledURLNavigation(initiatingDocument, 0.0, securityOrigin, url, referrer, LockHistory::Yes, LockBackForwardList::Yes, false, true)
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{
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}
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void fire(Frame& frame) override
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{
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UserGestureIndicator gestureIndicator { userGestureToForward() };
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ResourceRequest resourceRequest { url(), referrer(), ResourceRequestCachePolicy::ReloadIgnoringCacheData };
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FrameLoadRequest frameLoadRequest { initiatingDocument(), *securityOrigin(), WTFMove(resourceRequest), "_self", initiatedByMainFrame() };
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frameLoadRequest.setLockHistory(lockHistory());
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frameLoadRequest.setLockBackForwardList(lockBackForwardList());
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frameLoadRequest.setShouldOpenExternalURLsPolicy(shouldOpenExternalURLs());
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frame.loader().changeLocation(WTFMove(frameLoadRequest));
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}
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};
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class ScheduledHistoryNavigation : public ScheduledNavigation {
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public:
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explicit ScheduledHistoryNavigation(int historySteps)
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: ScheduledNavigation(0, LockHistory::No, LockBackForwardList::No, false, true)
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, m_historySteps(historySteps)
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{
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}
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void fire(Frame& frame) override
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{
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UserGestureIndicator gestureIndicator(userGestureToForward());
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if (!m_historySteps) {
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// Special case for go(0) from a frame -> reload only the frame
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// To follow Firefox and IE's behavior, history reload can only navigate the self frame.
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frame.loader().changeLocation(frame.document()->url(), "_self", 0, ReferrerPolicy::EmptyString, shouldOpenExternalURLs());
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return;
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}
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// go(i!=0) from a frame navigates into the history of the frame only,
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// in both IE and NS (but not in Mozilla). We can't easily do that.
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frame.page()->backForward().goBackOrForward(m_historySteps);
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}
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private:
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int m_historySteps;
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};
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class ScheduledFormSubmission : public ScheduledNavigation {
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public:
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ScheduledFormSubmission(Ref<FormSubmission>&& submission, LockBackForwardList lockBackForwardList, bool duringLoad)
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: ScheduledNavigation(0, submission->lockHistory(), lockBackForwardList, duringLoad, true, submission->state().sourceDocument().shouldOpenExternalURLsPolicyToPropagate())
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, m_submission(WTFMove(submission))
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{
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}
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void fire(Frame& frame) override
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{
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if (m_submission->wasCancelled())
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return;
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UserGestureIndicator gestureIndicator(userGestureToForward());
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// The submitForm function will find a target frame before using the redirection timer.
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// Now that the timer has fired, we need to repeat the security check which normally is done when
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// selecting a target, in case conditions have changed. Other code paths avoid this by targeting
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// without leaving a time window. If we fail the check just silently drop the form submission.
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auto& requestingDocument = m_submission->state().sourceDocument();
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if (!requestingDocument.canNavigate(&frame))
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return;
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FrameLoadRequest frameLoadRequest { requestingDocument, requestingDocument.securityOrigin(), { }, { }, initiatedByMainFrame() };
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frameLoadRequest.setLockHistory(lockHistory());
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frameLoadRequest.setLockBackForwardList(lockBackForwardList());
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frameLoadRequest.setReferrerPolicy(ReferrerPolicy::EmptyString);
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frameLoadRequest.setShouldOpenExternalURLsPolicy(shouldOpenExternalURLs());
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m_submission->populateFrameLoadRequest(frameLoadRequest);
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frame.loader().loadFrameRequest(WTFMove(frameLoadRequest), m_submission->event(), m_submission->takeState());
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}
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void didStartTimer(Frame& frame, Timer& timer) override
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{
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if (m_haveToldClient)
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return;
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m_haveToldClient = true;
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UserGestureIndicator gestureIndicator(userGestureToForward());
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frame.loader().clientRedirected(m_submission->requestURL(), delay(), WallTime::now() + timer.nextFireInterval(), lockBackForwardList());
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}
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void didStopTimer(Frame& frame, NewLoadInProgress newLoadInProgress) override
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{
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if (!m_haveToldClient)
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return;
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// Do not set a UserGestureIndicator because
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// clientRedirectCancelledOrFinished() is also called from many places
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// inside FrameLoader, where the gesture state is not set and is in
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// fact unavailable. We need to be consistent with them, otherwise the
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// gesture state will sometimes be set and sometimes not within
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// dispatchDidCancelClientRedirect().
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frame.loader().clientRedirectCancelledOrFinished(newLoadInProgress);
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}
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private:
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Ref<FormSubmission> m_submission;
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bool m_haveToldClient { false };
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};
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class ScheduledPageBlock final : public ScheduledNavigation {
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public:
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ScheduledPageBlock(Document& originDocument)
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: ScheduledNavigation(0, LockHistory::Yes, LockBackForwardList::Yes, false, false)
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, m_originDocument(originDocument)
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{
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}
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void fire(Frame& frame) override
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{
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UserGestureIndicator gestureIndicator { userGestureToForward() };
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ResourceResponse replacementResponse { m_originDocument.url(), "text/plain"_s, 0, "UTF-8"_s };
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SubstituteData replacementData { SharedBuffer::create(), m_originDocument.url(), replacementResponse, SubstituteData::SessionHistoryVisibility::Hidden };
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ResourceRequest resourceRequest { m_originDocument.url(), emptyString(), ResourceRequestCachePolicy::ReloadIgnoringCacheData };
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FrameLoadRequest frameLoadRequest { m_originDocument, m_originDocument.securityOrigin(), WTFMove(resourceRequest), { }, initiatedByMainFrame() };
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frameLoadRequest.setLockHistory(lockHistory());
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frameLoadRequest.setLockBackForwardList(lockBackForwardList());
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frameLoadRequest.setSubstituteData(replacementData);
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frameLoadRequest.setShouldOpenExternalURLsPolicy(shouldOpenExternalURLs());
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frame.loader().load(WTFMove(frameLoadRequest));
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}
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private:
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Document& m_originDocument;
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};
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NavigationScheduler::NavigationScheduler(Frame& frame)
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: m_frame(frame)
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, m_timer(*this, &NavigationScheduler::timerFired)
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{
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}
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NavigationScheduler::~NavigationScheduler() = default;
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bool NavigationScheduler::redirectScheduledDuringLoad()
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{
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return m_redirect && m_redirect->wasDuringLoad();
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}
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bool NavigationScheduler::locationChangePending()
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{
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return m_redirect && m_redirect->isLocationChange();
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}
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void NavigationScheduler::clear()
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{
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if (m_timer.isActive())
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InspectorInstrumentation::frameClearedScheduledNavigation(m_frame);
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m_timer.stop();
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m_redirect = nullptr;
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}
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inline bool NavigationScheduler::shouldScheduleNavigation() const
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{
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return m_frame.page();
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}
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inline bool NavigationScheduler::shouldScheduleNavigation(const URL& url) const
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{
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if (!shouldScheduleNavigation())
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return false;
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if (url.protocolIsJavaScript())
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return true;
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return NavigationDisabler::isNavigationAllowed(m_frame);
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}
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void NavigationScheduler::scheduleRedirect(Document& initiatingDocument, double delay, const URL& url, IsMetaRefresh isMetaRefresh)
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{
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if (!shouldScheduleNavigation(url))
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return;
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if (delay < 0 || delay > INT_MAX / 1000)
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return;
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if (url.isEmpty())
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return;
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// We want a new back/forward list item if the refresh timeout is > 1 second.
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if (!m_redirect || delay <= m_redirect->delay()) {
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auto lockBackForwardList = delay <= 1 ? LockBackForwardList::Yes : LockBackForwardList::No;
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schedule(makeUnique<ScheduledRedirect>(initiatingDocument, delay, &m_frame.document()->securityOrigin(), url, LockHistory::Yes, lockBackForwardList, isMetaRefresh));
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}
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}
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LockBackForwardList NavigationScheduler::mustLockBackForwardList(Frame& targetFrame)
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{
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// Non-user navigation before the page has finished firing onload should not create a new back/forward item.
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// See https://webkit.org/b/42861 for the original motivation for this.
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if (!UserGestureIndicator::processingUserGesture() && targetFrame.loader().documentLoader() && !targetFrame.loader().documentLoader()->wasOnloadDispatched())
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return LockBackForwardList::Yes;
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// Navigation of a subframe during loading of an ancestor frame does not create a new back/forward item.
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// The definition of "during load" is any time before all handlers for the load event have been run.
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// See https://bugs.webkit.org/show_bug.cgi?id=14957 for the original motivation for this.
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for (Frame* ancestor = targetFrame.tree().parent(); ancestor; ancestor = ancestor->tree().parent()) {
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Document* document = ancestor->document();
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if (!ancestor->loader().isComplete() || (document && document->processingLoadEvent()))
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return LockBackForwardList::Yes;
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}
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return LockBackForwardList::No;
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}
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void NavigationScheduler::scheduleLocationChange(Document& initiatingDocument, SecurityOrigin& securityOrigin, const URL& url, const String& referrer, LockHistory lockHistory, LockBackForwardList lockBackForwardList, CompletionHandler<void()>&& completionHandler)
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{
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if (!shouldScheduleNavigation(url))
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return completionHandler();
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if (lockBackForwardList == LockBackForwardList::No)
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lockBackForwardList = mustLockBackForwardList(m_frame);
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FrameLoader& loader = m_frame.loader();
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// If the URL we're going to navigate to is the same as the current one, except for the
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// fragment part, we don't need to schedule the location change.
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if (url.hasFragmentIdentifier() && equalIgnoringFragmentIdentifier(m_frame.document()->url(), url)) {
|
|
ResourceRequest resourceRequest { m_frame.document()->completeURL(url.string()), referrer, ResourceRequestCachePolicy::UseProtocolCachePolicy };
|
|
auto* frame = lexicalFrameFromCommonVM();
|
|
auto initiatedByMainFrame = frame && frame->isMainFrame() ? InitiatedByMainFrame::Yes : InitiatedByMainFrame::Unknown;
|
|
|
|
FrameLoadRequest frameLoadRequest { initiatingDocument, securityOrigin, WTFMove(resourceRequest), "_self"_s, initiatedByMainFrame };
|
|
frameLoadRequest.setLockHistory(lockHistory);
|
|
frameLoadRequest.setLockBackForwardList(lockBackForwardList);
|
|
frameLoadRequest.disableNavigationToInvalidURL();
|
|
frameLoadRequest.setShouldOpenExternalURLsPolicy(initiatingDocument.shouldOpenExternalURLsPolicyToPropagate());
|
|
loader.changeLocation(WTFMove(frameLoadRequest));
|
|
return completionHandler();
|
|
}
|
|
|
|
// Handle a location change of a page with no document as a special case.
|
|
// This may happen when a frame changes the location of another frame.
|
|
bool duringLoad = !loader.stateMachine().committedFirstRealDocumentLoad();
|
|
|
|
schedule(makeUnique<ScheduledLocationChange>(initiatingDocument, &securityOrigin, url, referrer, lockHistory, lockBackForwardList, duringLoad, WTFMove(completionHandler)));
|
|
}
|
|
|
|
void NavigationScheduler::scheduleFormSubmission(Ref<FormSubmission>&& submission)
|
|
{
|
|
ASSERT(m_frame.page());
|
|
|
|
// FIXME: Do we need special handling for form submissions where the URL is the same
|
|
// as the current one except for the fragment part? See scheduleLocationChange above.
|
|
|
|
// Handle a location change of a page with no document as a special case.
|
|
// This may happen when a frame changes the location of another frame.
|
|
bool duringLoad = !m_frame.loader().stateMachine().committedFirstRealDocumentLoad();
|
|
|
|
// If this is a child frame and the form submission was triggered by a script, lock the back/forward list
|
|
// to match IE and Opera.
|
|
// See https://bugs.webkit.org/show_bug.cgi?id=32383 for the original motivation for this.
|
|
LockBackForwardList lockBackForwardList = mustLockBackForwardList(m_frame);
|
|
if (lockBackForwardList == LockBackForwardList::No
|
|
&& (submission->state().formSubmissionTrigger() == SubmittedByJavaScript && m_frame.tree().parent() && !UserGestureIndicator::processingUserGesture())) {
|
|
lockBackForwardList = LockBackForwardList::Yes;
|
|
}
|
|
|
|
schedule(makeUnique<ScheduledFormSubmission>(WTFMove(submission), lockBackForwardList, duringLoad));
|
|
}
|
|
|
|
void NavigationScheduler::scheduleRefresh(Document& initiatingDocument)
|
|
{
|
|
if (!shouldScheduleNavigation())
|
|
return;
|
|
const URL& url = m_frame.document()->url();
|
|
if (url.isEmpty())
|
|
return;
|
|
|
|
schedule(makeUnique<ScheduledRefresh>(initiatingDocument, &m_frame.document()->securityOrigin(), url, m_frame.loader().outgoingReferrer()));
|
|
}
|
|
|
|
void NavigationScheduler::scheduleHistoryNavigation(int steps)
|
|
{
|
|
LOG(History, "NavigationScheduler %p scheduleHistoryNavigation(%d) - shouldSchedule %d", this, steps, shouldScheduleNavigation());
|
|
if (!shouldScheduleNavigation())
|
|
return;
|
|
|
|
// Invalid history navigations (such as history.forward() during a new load) have the side effect of cancelling any scheduled
|
|
// redirects. We also avoid the possibility of cancelling the current load by avoiding the scheduled redirection altogether.
|
|
BackForwardController& backForward = m_frame.page()->backForward();
|
|
if ((steps > 0 && static_cast<unsigned>(steps) > backForward.forwardCount())
|
|
|| (steps < 0 && static_cast<unsigned>(-steps) > backForward.backCount())) {
|
|
cancel();
|
|
return;
|
|
}
|
|
|
|
// In all other cases, schedule the history traversal to occur asynchronously.
|
|
schedule(makeUnique<ScheduledHistoryNavigation>(steps));
|
|
}
|
|
|
|
void NavigationScheduler::schedulePageBlock(Document& originDocument)
|
|
{
|
|
if (shouldScheduleNavigation())
|
|
schedule(makeUnique<ScheduledPageBlock>(originDocument));
|
|
}
|
|
|
|
void NavigationScheduler::timerFired()
|
|
{
|
|
if (!m_frame.page())
|
|
return;
|
|
if (m_frame.page()->defersLoading()) {
|
|
InspectorInstrumentation::frameClearedScheduledNavigation(m_frame);
|
|
return;
|
|
}
|
|
|
|
Ref<Frame> protect(m_frame);
|
|
|
|
std::unique_ptr<ScheduledNavigation> redirect = std::exchange(m_redirect, nullptr);
|
|
LOG(History, "NavigationScheduler %p timerFired - firing redirect %p", this, redirect.get());
|
|
|
|
redirect->fire(m_frame);
|
|
InspectorInstrumentation::frameClearedScheduledNavigation(m_frame);
|
|
}
|
|
|
|
void NavigationScheduler::schedule(std::unique_ptr<ScheduledNavigation> redirect)
|
|
{
|
|
ASSERT(m_frame.page());
|
|
|
|
Ref<Frame> protect(m_frame);
|
|
|
|
// If a redirect was scheduled during a load, then stop the current load.
|
|
// Otherwise when the current load transitions from a provisional to a
|
|
// committed state, pending redirects may be cancelled.
|
|
if (redirect->wasDuringLoad()) {
|
|
if (DocumentLoader* provisionalDocumentLoader = m_frame.loader().provisionalDocumentLoader())
|
|
provisionalDocumentLoader->stopLoading();
|
|
m_frame.loader().stopLoading(UnloadEventPolicy::UnloadAndPageHide);
|
|
}
|
|
|
|
cancel();
|
|
m_redirect = WTFMove(redirect);
|
|
|
|
if (!m_frame.loader().isComplete() && m_redirect->isLocationChange())
|
|
m_frame.loader().completed();
|
|
|
|
if (!m_frame.page())
|
|
return;
|
|
|
|
startTimer();
|
|
}
|
|
|
|
void NavigationScheduler::startTimer()
|
|
{
|
|
if (!m_redirect)
|
|
return;
|
|
|
|
ASSERT(m_frame.page());
|
|
if (m_timer.isActive())
|
|
return;
|
|
if (!m_redirect->shouldStartTimer(m_frame))
|
|
return;
|
|
|
|
Seconds delay = 1_s * m_redirect->delay();
|
|
m_timer.startOneShot(delay);
|
|
InspectorInstrumentation::frameScheduledNavigation(m_frame, delay);
|
|
m_redirect->didStartTimer(m_frame, m_timer); // m_redirect may be null on return (e.g. the client canceled the load)
|
|
}
|
|
|
|
void NavigationScheduler::cancel(NewLoadInProgress newLoadInProgress)
|
|
{
|
|
LOG(History, "NavigationScheduler %p cancel(newLoadInProgress=%d)", this, newLoadInProgress == NewLoadInProgress::Yes);
|
|
|
|
if (m_timer.isActive())
|
|
InspectorInstrumentation::frameClearedScheduledNavigation(m_frame);
|
|
m_timer.stop();
|
|
|
|
if (auto redirect = std::exchange(m_redirect, nullptr))
|
|
redirect->didStopTimer(m_frame, newLoadInProgress);
|
|
}
|
|
|
|
} // namespace WebCore
|