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/*
* Copyright (C) 2008-2017 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:
* 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. ``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
* 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 "ApplicationCacheResourceLoader.h"
#include "DOMApplicationCache.h"
#include <wtf/Noncopyable.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/URL.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class ApplicationCacheGroup;
}
namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebCore::ApplicationCacheGroup> : std::true_type { };
}
namespace WebCore {
class ApplicationCache;
class ApplicationCacheResource;
class ApplicationCacheStorage;
class Document;
class DocumentLoader;
class LocalFrame;
class SecurityOrigin;
enum ApplicationCacheUpdateOption {
ApplicationCacheUpdateWithBrowsingContext,
ApplicationCacheUpdateWithoutBrowsingContext
};
class ApplicationCacheGroup : public CanMakeWeakPtr<ApplicationCacheGroup> {
WTF_MAKE_NONCOPYABLE(ApplicationCacheGroup);
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(Loader);
public:
explicit ApplicationCacheGroup(Ref<ApplicationCacheStorage>&&, const URL& manifestURL);
virtual ~ApplicationCacheGroup();
enum UpdateStatus { Idle, Checking, Downloading };
static ApplicationCache* cacheForMainRequest(const ResourceRequest&, DocumentLoader*);
static ApplicationCache* fallbackCacheForMainRequest(const ResourceRequest&, DocumentLoader*);
static void selectCache(LocalFrame&, const URL& manifestURL);
static void selectCacheWithoutManifestURL(LocalFrame&);
ApplicationCacheStorage& storage() { return m_storage; }
const URL& manifestURL() const { return m_manifestURL; }
const SecurityOrigin& origin() const { return m_origin.get(); }
UpdateStatus updateStatus() const { return m_updateStatus; }
void setUpdateStatus(UpdateStatus status);
void setStorageID(unsigned storageID) { m_storageID = storageID; }
unsigned storageID() const { return m_storageID; }
void clearStorageID();
void update(LocalFrame&, ApplicationCacheUpdateOption); // FIXME: Frame should not be needed when updating without browsing context.
void cacheDestroyed(ApplicationCache&);
void abort(LocalFrame&);
bool cacheIsComplete(ApplicationCache& cache) { return m_caches.contains(&cache); }
void stopLoadingInFrame(LocalFrame&);
ApplicationCache* newestCache() const { return m_newestCache.get(); }
void setNewestCache(Ref<ApplicationCache>&&);
void makeObsolete();
bool isObsolete() const { return m_isObsolete; }
void finishedLoadingMainResource(DocumentLoader&);
void failedLoadingMainResource(DocumentLoader&);
void disassociateDocumentLoader(DocumentLoader&);
private:
static void postListenerTask(const AtomString& eventType, const UncheckedKeyHashSet<DocumentLoader*>& set) { postListenerTask(eventType, 0, 0, set); }
static void postListenerTask(const AtomString& eventType, DocumentLoader& loader) { postListenerTask(eventType, 0, 0, loader); }
static void postListenerTask(const AtomString& eventType, int progressTotal, int progressDone, const UncheckedKeyHashSet<DocumentLoader*>&);
static void postListenerTask(const AtomString& eventType, int progressTotal, int progressDone, DocumentLoader&);
void scheduleReachedMaxAppCacheSizeCallback();
void didFinishLoadingManifest();
void didFailLoadingManifest(ApplicationCacheResourceLoader::Error);
void didFailLoadingEntry(ApplicationCacheResourceLoader::Error, const URL&, unsigned type);
void didFinishLoadingEntry(const URL&);
void didReachMaxAppCacheSize();
void didReachOriginQuota(int64_t totalSpaceNeeded);
void startLoadingEntry();
void deliverDelayedMainResources();
void checkIfLoadIsComplete();
void cacheUpdateFailed();
void recalculateAvailableSpaceInQuota();
void manifestNotFound();
void addEntry(const String&, unsigned type);
void associateDocumentLoaderWithCache(DocumentLoader*, ApplicationCache*);
void stopLoading();
ResourceRequest createRequest(URL&&, ApplicationCacheResource*);
Ref<ApplicationCacheStorage> m_storage;
URL m_manifestURL;
Ref<SecurityOrigin> m_origin;
UpdateStatus m_updateStatus { Idle };
// This is the newest complete cache in the group.
RefPtr<ApplicationCache> m_newestCache;
// All complete caches in this cache group.
UncheckedKeyHashSet<ApplicationCache*> m_caches;
// The cache being updated (if any). Note that cache updating does not immediately create a new
// ApplicationCache object, so this may be null even when update status is not Idle.
RefPtr<ApplicationCache> m_cacheBeingUpdated;
// List of pending master entries, used during the update process to ensure that new master entries are cached.
UncheckedKeyHashSet<DocumentLoader*> m_pendingMasterResourceLoaders;
// How many of the above pending master entries have not yet finished downloading.
int m_downloadingPendingMasterResourceLoadersCount { 0 };
// These are all the document loaders that are associated with a cache in this group.
UncheckedKeyHashSet<DocumentLoader*> m_associatedDocumentLoaders;
// The URLs and types of pending cache entries.
HashMap<String, unsigned> m_pendingEntries;
// The total number of items to be processed to update the cache group and the number that have been done.
int m_progressTotal { 0 };
int m_progressDone { 0 };
// Frame used for fetching resources when updating.
// FIXME: An update started by a particular frame should not stop if it is destroyed, but there are other frames associated with the same cache group.
WeakPtr<LocalFrame> m_frame;
// An obsolete cache group is never stored, but the opposite is not true - storing may fail for multiple reasons, such as exceeding disk quota.
unsigned m_storageID { 0 };
bool m_isObsolete { false };
// During update, this is used to handle asynchronously arriving results.
enum CompletionType {
None,
NoUpdate,
Failure,
Completed
};
CompletionType m_completionType { None };
// This flag is set immediately after the ChromeClient::reachedMaxAppCacheSize() callback is invoked as a result of the storage layer failing to save a cache
// due to reaching the maximum size of the application cache database file. This flag is used by ApplicationCacheGroup::checkIfLoadIsComplete() to decide
// the course of action in case of this failure (i.e. call the ChromeClient callback or run the failure steps).
bool m_calledReachedMaxAppCacheSize { false };
RefPtr<ApplicationCacheResource> m_currentResource;
RefPtr<ApplicationCacheResourceLoader> m_entryLoader;
Markable<ResourceLoaderIdentifier> m_currentResourceIdentifier;
RefPtr<ApplicationCacheResource> m_manifestResource;
RefPtr<ApplicationCacheResourceLoader> m_manifestLoader;
int64_t m_availableSpaceInQuota;
bool m_originQuotaExceededPreviously { false };
friend class ChromeClientCallbackTimer;
};
} // namespace WebCore
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