mirror of
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276 lines
11 KiB
C++
276 lines
11 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et cin: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsOfflineCacheDevice_h__
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#define nsOfflineCacheDevice_h__
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#include "nsCacheDevice.h"
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#include "nsIApplicationCache.h"
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#include "nsIApplicationCacheService.h"
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#include "nsIObserver.h"
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#include "mozIStorageConnection.h"
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#include "mozIStorageFunction.h"
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#include "nsIFile.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsCOMArray.h"
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#include "nsInterfaceHashtable.h"
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#include "nsClassHashtable.h"
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#include "nsWeakReference.h"
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#include "mozilla/Attributes.h"
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class nsIURI;
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class nsOfflineCacheDevice;
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class nsApplicationCacheNamespace MOZ_FINAL : public nsIApplicationCacheNamespace
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIAPPLICATIONCACHENAMESPACE
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nsApplicationCacheNamespace() : mItemType(0) {}
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private:
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PRUint32 mItemType;
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nsCString mNamespaceSpec;
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nsCString mData;
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};
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class nsOfflineCacheEvictionFunction MOZ_FINAL : public mozIStorageFunction {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_MOZISTORAGEFUNCTION
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nsOfflineCacheEvictionFunction(nsOfflineCacheDevice *device)
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: mDevice(device)
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{}
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void Reset() { mItems.Clear(); }
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void Apply();
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private:
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nsOfflineCacheDevice *mDevice;
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nsCOMArray<nsIFile> mItems;
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};
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class nsOfflineCacheDevice : public nsCacheDevice
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, public nsISupports
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{
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public:
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nsOfflineCacheDevice();
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NS_DECL_ISUPPORTS
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/**
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* nsCacheDevice methods
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*/
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virtual nsresult Init();
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virtual nsresult Shutdown();
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virtual const char * GetDeviceID(void);
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virtual nsCacheEntry * FindEntry(nsCString * key, bool *collision);
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virtual nsresult DeactivateEntry(nsCacheEntry * entry);
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virtual nsresult BindEntry(nsCacheEntry * entry);
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virtual void DoomEntry( nsCacheEntry * entry );
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virtual nsresult OpenInputStreamForEntry(nsCacheEntry * entry,
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nsCacheAccessMode mode,
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PRUint32 offset,
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nsIInputStream ** result);
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virtual nsresult OpenOutputStreamForEntry(nsCacheEntry * entry,
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nsCacheAccessMode mode,
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PRUint32 offset,
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nsIOutputStream ** result);
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virtual nsresult GetFileForEntry(nsCacheEntry * entry,
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nsIFile ** result);
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virtual nsresult OnDataSizeChange(nsCacheEntry * entry, PRInt32 deltaSize);
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virtual nsresult Visit(nsICacheVisitor * visitor);
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virtual nsresult EvictEntries(const char * clientID);
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/* Entry ownership */
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nsresult GetOwnerDomains(const char * clientID,
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PRUint32 * count,
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char *** domains);
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nsresult GetOwnerURIs(const char * clientID,
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const nsACString & ownerDomain,
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PRUint32 * count,
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char *** uris);
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nsresult SetOwnedKeys(const char * clientID,
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const nsACString & ownerDomain,
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const nsACString & ownerUrl,
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PRUint32 count,
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const char ** keys);
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nsresult GetOwnedKeys(const char * clientID,
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const nsACString & ownerDomain,
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const nsACString & ownerUrl,
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PRUint32 * count,
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char *** keys);
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nsresult AddOwnedKey(const char * clientID,
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const nsACString & ownerDomain,
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const nsACString & ownerURI,
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const nsACString & key);
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nsresult RemoveOwnedKey(const char * clientID,
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const nsACString & ownerDomain,
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const nsACString & ownerURI,
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const nsACString & key);
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nsresult KeyIsOwned(const char * clientID,
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const nsACString & ownerDomain,
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const nsACString & ownerURI,
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const nsACString & key,
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bool * isOwned);
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nsresult ClearKeysOwnedByDomain(const char *clientID,
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const nsACString &ownerDomain);
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nsresult EvictUnownedEntries(const char *clientID);
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nsresult ActivateCache(const nsCSubstring &group,
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const nsCSubstring &clientID);
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bool IsActiveCache(const nsCSubstring &group,
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const nsCSubstring &clientID);
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nsresult GetGroupForCache(const nsCSubstring &clientID,
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nsCString &out);
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nsresult CreateApplicationCache(const nsACString &group,
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nsIApplicationCache **out);
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nsresult GetApplicationCache(const nsACString &clientID,
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nsIApplicationCache **out);
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nsresult GetActiveCache(const nsACString &group,
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nsIApplicationCache **out);
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nsresult DeactivateGroup(const nsACString &group);
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nsresult ChooseApplicationCache(const nsACString &key,
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nsIApplicationCache **out);
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nsresult CacheOpportunistically(nsIApplicationCache* cache,
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const nsACString &key);
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nsresult GetGroups(PRUint32 *count,char ***keys);
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nsresult GetGroupsTimeOrdered(PRUint32 *count,
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char ***keys);
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bool IsLocked(const nsACString &key);
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void Lock(const nsACString &key);
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void Unlock(const nsACString &key);
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/**
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* Preference accessors
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*/
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void SetCacheParentDirectory(nsIFile * parentDir);
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void SetCapacity(PRUint32 capacity);
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void SetAutoShutdown() { mAutoShutdown = true; }
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bool AutoShutdown(nsIApplicationCache * aAppCache);
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nsIFile * BaseDirectory() { return mBaseDirectory; }
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nsIFile * CacheDirectory() { return mCacheDirectory; }
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PRUint32 CacheCapacity() { return mCacheCapacity; }
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PRUint32 CacheSize();
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PRUint32 EntryCount();
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private:
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friend class nsApplicationCache;
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static PLDHashOperator ShutdownApplicationCache(const nsACString &key,
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nsIWeakReference *weakRef,
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void *ctx);
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static bool GetStrictFileOriginPolicy();
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bool Initialized() { return mDB != nsnull; }
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nsresult InitActiveCaches();
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nsresult UpdateEntry(nsCacheEntry *entry);
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nsresult UpdateEntrySize(nsCacheEntry *entry, PRUint32 newSize);
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nsresult DeleteEntry(nsCacheEntry *entry, bool deleteData);
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nsresult DeleteData(nsCacheEntry *entry);
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nsresult EnableEvictionObserver();
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nsresult DisableEvictionObserver();
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bool CanUseCache(nsIURI *keyURI, const nsCString &clientID);
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nsresult MarkEntry(const nsCString &clientID,
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const nsACString &key,
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PRUint32 typeBits);
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nsresult UnmarkEntry(const nsCString &clientID,
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const nsACString &key,
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PRUint32 typeBits);
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nsresult CacheOpportunistically(const nsCString &clientID,
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const nsACString &key);
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nsresult GetTypes(const nsCString &clientID,
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const nsACString &key,
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PRUint32 *typeBits);
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nsresult GetMatchingNamespace(const nsCString &clientID,
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const nsACString &key,
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nsIApplicationCacheNamespace **out);
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nsresult GatherEntries(const nsCString &clientID,
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PRUint32 typeBits,
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PRUint32 *count,
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char *** values);
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nsresult AddNamespace(const nsCString &clientID,
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nsIApplicationCacheNamespace *ns);
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nsresult GetUsage(const nsACString &clientID,
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PRUint32 *usage);
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nsresult RunSimpleQuery(mozIStorageStatement *statment,
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PRUint32 resultIndex,
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PRUint32 * count,
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char *** values);
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nsCOMPtr<mozIStorageConnection> mDB;
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nsRefPtr<nsOfflineCacheEvictionFunction> mEvictionFunction;
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nsCOMPtr<mozIStorageStatement> mStatement_CacheSize;
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nsCOMPtr<mozIStorageStatement> mStatement_ApplicationCacheSize;
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nsCOMPtr<mozIStorageStatement> mStatement_EntryCount;
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nsCOMPtr<mozIStorageStatement> mStatement_UpdateEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_UpdateEntrySize;
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nsCOMPtr<mozIStorageStatement> mStatement_DeleteEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_FindEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_BindEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_ClearDomain;
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nsCOMPtr<mozIStorageStatement> mStatement_MarkEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_UnmarkEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_GetTypes;
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nsCOMPtr<mozIStorageStatement> mStatement_FindNamespaceEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_InsertNamespaceEntry;
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nsCOMPtr<mozIStorageStatement> mStatement_CleanupUnmarked;
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nsCOMPtr<mozIStorageStatement> mStatement_GatherEntries;
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nsCOMPtr<mozIStorageStatement> mStatement_ActivateClient;
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nsCOMPtr<mozIStorageStatement> mStatement_DeactivateGroup;
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nsCOMPtr<mozIStorageStatement> mStatement_FindClient;
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nsCOMPtr<mozIStorageStatement> mStatement_FindClientByNamespace;
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nsCOMPtr<mozIStorageStatement> mStatement_EnumerateGroups;
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nsCOMPtr<mozIStorageStatement> mStatement_EnumerateGroupsTimeOrder;
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nsCOMPtr<nsIFile> mBaseDirectory;
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nsCOMPtr<nsIFile> mCacheDirectory;
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PRUint32 mCacheCapacity; // in bytes
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PRInt32 mDeltaCounter;
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bool mAutoShutdown;
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nsInterfaceHashtable<nsCStringHashKey, nsIWeakReference> mCaches;
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nsClassHashtable<nsCStringHashKey, nsCString> mActiveCachesByGroup;
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nsTHashtable<nsCStringHashKey> mActiveCaches;
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nsTHashtable<nsCStringHashKey> mLockedEntries;
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nsCOMPtr<nsIThread> mInitThread;
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};
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#endif // nsOfflineCacheDevice_h__
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