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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef BlobRegistryImpl_h
     32 #define BlobRegistryImpl_h
     33 
     34 #include "BlobData.h"
     35 #include "BlobRegistry.h"
     36 #include "BlobStorageData.h"
     37 #include "PlatformString.h"
     38 #include <wtf/HashMap.h>
     39 #include <wtf/text/CString.h>
     40 #include <wtf/text/StringHash.h>
     41 
     42 namespace WebCore {
     43 
     44 class KURL;
     45 class ResourceError;
     46 class ResourceHandle;
     47 class ResourceHandleClient;
     48 class ResourceRequest;
     49 class ResourceResponse;
     50 
     51 // BlobRegistryImpl is not thread-safe. It should only be called from main thread.
     52 class BlobRegistryImpl : public BlobRegistry {
     53 public:
     54     virtual ~BlobRegistryImpl() { }
     55 
     56     virtual void registerBlobURL(const KURL&, PassOwnPtr<BlobData>);
     57     virtual void registerBlobURL(const KURL&, const KURL& srcURL);
     58     virtual void unregisterBlobURL(const KURL&);
     59     virtual PassRefPtr<ResourceHandle> createResourceHandle(const ResourceRequest&, ResourceHandleClient*);
     60     virtual bool loadResourceSynchronously(const ResourceRequest&, ResourceError&, ResourceResponse&, Vector<char>& data);
     61 
     62     PassRefPtr<BlobStorageData> getBlobDataFromURL(const KURL&) const;
     63 
     64 private:
     65     bool shouldLoadResource(const ResourceRequest& request) const;
     66     void appendStorageItems(BlobStorageData*, const BlobDataItemList&);
     67     void appendStorageItems(BlobStorageData*, const BlobDataItemList&, long long offset, long long length);
     68 
     69     HashMap<String, RefPtr<BlobStorageData> > m_blobs;
     70 };
     71 
     72 } // namespace WebCore
     73 
     74 #endif // BlobRegistryImpl_h
     75