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282 lines
11 KiB
C++
282 lines
11 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et cin: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla.
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*
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* The Initial Developer of the Original Code is IBM Corporation.
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* Portions created by IBM Corporation are Copyright (C) 2004
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* IBM Corporation. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@meer.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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 "nsILocalFile.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 "nsHashSets.h"
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#include "nsWeakReference.h"
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class nsIURI;
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class nsOfflineCacheDevice;
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class nsApplicationCacheNamespace : 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 : 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 nsIApplicationCacheService
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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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NS_DECL_NSIAPPLICATIONCACHESERVICE
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/**
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* nsCacheDevice methods
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*/
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virtual ~nsOfflineCacheDevice();
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static nsOfflineCacheDevice *GetInstance();
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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, PRBool *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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PRBool * 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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PRBool 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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/**
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* Preference accessors
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*/
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void SetCacheParentDirectory(nsILocalFile * parentDir);
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void SetCapacity(PRUint32 capacity);
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nsILocalFile * 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 PRBool GetStrictFileOriginPolicy();
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PRBool 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, PRBool 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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PRBool 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_UpdateEntryFlags;
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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<nsILocalFile> mCacheDirectory;
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PRUint32 mCacheCapacity; // in bytes
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PRInt32 mDeltaCounter;
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nsInterfaceHashtable<nsCStringHashKey, nsIWeakReference> mCaches;
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nsClassHashtable<nsCStringHashKey, nsCString> mActiveCachesByGroup;
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nsCStringHashSet mActiveCaches;
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nsCOMPtr<nsIThread> mInitThread;
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};
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#endif // nsOfflineCacheDevice_h__
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