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/*
* Copyright (c) 2009, Google Inc. All rights reserved.
* Copyright (c) 2017 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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
#include <wtf/CheckedRef.h>
#include <wtf/Deque.h>
#include <wtf/URL.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class ApplicationCache;
class ApplicationCacheGroup;
class ApplicationCacheResource;
class ApplicationCacheStorage;
class SharedBuffer;
class DOMApplicationCache;
class DocumentLoader;
class LocalFrame;
class ResourceError;
class ResourceLoader;
class ResourceRequest;
class ResourceResponse;
class SubstituteData;
class WeakPtrImplWithEventTargetData;
class ApplicationCacheHost {
WTF_MAKE_NONCOPYABLE(ApplicationCacheHost); WTF_MAKE_FAST_ALLOCATED;
public:
// The Status numeric values are specified in the HTML5 spec.
enum Status {
UNCACHED = 0,
IDLE = 1,
CHECKING = 2,
DOWNLOADING = 3,
UPDATEREADY = 4,
OBSOLETE = 5
};
struct CacheInfo {
URL manifest;
double creationTime;
double updateTime;
long long size;
};
struct ResourceInfo {
URL resource;
bool isMaster;
bool isManifest;
bool isFallback;
bool isForeign;
bool isExplicit;
long long size;
};
explicit ApplicationCacheHost(DocumentLoader&);
~ApplicationCacheHost();
static URL createFileURL(const String&);
void selectCacheWithoutManifest();
void selectCacheWithManifest(const URL& manifestURL);
bool canLoadMainResource(const ResourceRequest&);
void maybeLoadMainResource(const ResourceRequest&, SubstituteData&);
void maybeLoadMainResourceForRedirect(const ResourceRequest&, SubstituteData&);
bool maybeLoadFallbackForMainResponse(const ResourceRequest&, const ResourceResponse&);
void mainResourceDataReceived(const SharedBuffer&, long long encodedDataLength, bool allAtOnce);
void finishedLoadingMainResource();
void failedLoadingMainResource();
WEBCORE_EXPORT bool maybeLoadResource(ResourceLoader&, const ResourceRequest&, const URL& originalURL);
WEBCORE_EXPORT bool maybeLoadFallbackForRedirect(ResourceLoader*, ResourceRequest&, const ResourceResponse&);
WEBCORE_EXPORT bool maybeLoadFallbackForResponse(ResourceLoader*, const ResourceResponse&);
WEBCORE_EXPORT bool maybeLoadFallbackForError(ResourceLoader*, const ResourceError&);
bool maybeLoadSynchronously(ResourceRequest&, ResourceError&, ResourceResponse&, RefPtr<SharedBuffer>&);
void maybeLoadFallbackSynchronously(const ResourceRequest&, ResourceError&, ResourceResponse&, RefPtr<SharedBuffer>&);
bool canCacheInBackForwardCache();
Status status() const;
bool update();
bool swapCache();
void abort();
void setDOMApplicationCache(DOMApplicationCache*);
void notifyDOMApplicationCache(const AtomString& eventType, int progressTotal, int progressDone);
void stopLoadingInFrame(LocalFrame&);
void stopDeferringEvents(); // Also raises the events that have been queued up.
Vector<ResourceInfo> resourceList();
CacheInfo applicationCacheInfo();
bool shouldLoadResourceFromApplicationCache(const ResourceRequest&, ApplicationCacheResource*&);
bool getApplicationCacheFallbackResource(const ResourceRequest&, ApplicationCacheResource*&, ApplicationCache* = nullptr);
private:
friend class ApplicationCacheGroup;
struct DeferredEvent {
AtomString eventType;
int progressTotal;
int progressDone;
};
bool isApplicationCacheEnabled();
bool isApplicationCacheBlockedForRequest(const ResourceRequest&);
void dispatchDOMEvent(const AtomString& eventType, int progressTotal, int progressDone);
bool scheduleLoadFallbackResourceFromApplicationCache(ResourceLoader*, ApplicationCache* = nullptr);
void setCandidateApplicationCacheGroup(ApplicationCacheGroup*);
ApplicationCacheGroup* candidateApplicationCacheGroup() const;
void setApplicationCache(RefPtr<ApplicationCache>&&);
ApplicationCache* applicationCache() const { return m_applicationCache.get(); }
ApplicationCache* mainResourceApplicationCache() const { return m_mainResourceApplicationCache.get(); }
bool maybeLoadFallbackForMainError(const ResourceRequest&, const ResourceError&);
WeakPtr<DOMApplicationCache, WeakPtrImplWithEventTargetData> m_domApplicationCache;
CheckedRef<DocumentLoader> m_documentLoader;
bool m_defersEvents { true }; // Events are deferred until after document onload.
Vector<DeferredEvent> m_deferredEvents;
// The application cache that the document loader is associated with (if any).
RefPtr<ApplicationCache> m_applicationCache;
// Before an application cache has finished loading, this will be the candidate application
// group that the document loader is associated with.
WeakPtr<ApplicationCacheGroup> m_candidateApplicationCacheGroup;
// This is the application cache the main resource was loaded from (if any).
RefPtr<ApplicationCache> m_mainResourceApplicationCache;
};
} // namespace WebCore
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