********** WebCore blob hacking

WebCore/platform/network/BlobRegistry.h

 /*
  * Copyright (C) 2010 Google 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
@@ skipping 15 matching lines @@
  * 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.
  */
 
 #ifndef BlobRegistry_h
 #define BlobRegistry_h
 
 #include <wtf/PassOwnPtr.h>
 #include <wtf/PassRefPtr.h>
+#include <wtf/text/WTFString.h>
 #include <wtf/Vector.h>
 
 namespace WebCore {
 
 class BlobData;
-class BlobRegistry;
+class BlobDataHandle;
 class KURL;
 class ResourceError;
 class ResourceHandle;
 class ResourceHandleClient;
 class ResourceRequest;
 class ResourceResponse;
+class SecurityOrigin;
 
-// Returns a single instance of BlobRegistry.
-BlobRegistry& blobRegistry(); 
-
-// BlobRegistry is not thread-safe. It should only be called from main thread.
 class BlobRegistry {
 public:
-    // Registers a blob URL referring to the specified blob data.
-    virtual void registerBlobURL(const KURL&, PassOwnPtr<BlobData>) = 0;
-    
-    // Registers a blob URL referring to the blob data identified by the specified srcURL.
-    virtual void registerBlobURL(const KURL&, const KURL& srcURL) = 0;
+    // BlobData registration: may be called on any thread.
+    virtual void registerBlobData(const String& uuid, PassOwnPtr<BlobData>) = 0;
+    virtual void addBlobDataRef(const String& uuid) = 0;
+    virtual void removeBlobDataRef(const String& uuid) = 0;
 
-    virtual void unregisterBlobURL(const KURL&) = 0;
-    virtual bool loadResourceSynchronously(const ResourceRequest&, ResourceError&, ResourceResponse&, Vector<char>& data) = 0;
+    // Public Blob URL registration: may be called on any thread.
+    virtual void registerPublicBlobURL(SecurityOrigin*, const KURL&, PassRefPtr<BlobDataHandle>) = 0;
+    virtual void revokePublicBlobURL(const KURL&) = 0;
+    virtual PassRefPtr<SecurityOrigin> cachedUniqueOrigin(const KURL&) = 0;
 
 protected:
-    virtual ~BlobRegistry() { }
+    // Helpers for derivatives to maintain a mapping from Blob URL to unique security origins. This mapping is thead-specific.
+    static void setCachedUniqueOrigin(const KURL&, SecurityOrigin*);
+    static void clearCachedUniqueOrigin(const KURL&);
+    static PassRefPtr<SecurityOrigin> getCachedUniqueOrigin(const KURL&);
 };
 
+BlobRegistry& blobRegistry();
+
 } // namespace WebCore
 
 #endif // BlobRegistry_h