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      1 /*
      2  * Copyright (C) 2009 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 DocumentThreadableLoader_h
     32 #define DocumentThreadableLoader_h
     33 
     34 #include "FrameLoaderTypes.h"
     35 #include "SubresourceLoaderClient.h"
     36 #include "ThreadableLoader.h"
     37 #include <wtf/OwnPtr.h>
     38 #include <wtf/PassRefPtr.h>
     39 #include <wtf/RefCounted.h>
     40 #include <wtf/RefPtr.h>
     41 
     42 namespace WebCore {
     43     class Document;
     44     class KURL;
     45     class ResourceRequest;
     46     class ThreadableLoaderClient;
     47 
     48     class DocumentThreadableLoader : public RefCounted<DocumentThreadableLoader>, public ThreadableLoader, private SubresourceLoaderClient  {
     49     public:
     50         static void loadResourceSynchronously(Document*, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&);
     51         static PassRefPtr<DocumentThreadableLoader> create(Document*, ThreadableLoaderClient*, const ResourceRequest&, const ThreadableLoaderOptions&);
     52         virtual ~DocumentThreadableLoader();
     53 
     54         virtual void cancel();
     55 
     56         using RefCounted<DocumentThreadableLoader>::ref;
     57         using RefCounted<DocumentThreadableLoader>::deref;
     58 
     59     protected:
     60         virtual void refThreadableLoader() { ref(); }
     61         virtual void derefThreadableLoader() { deref(); }
     62 
     63     private:
     64         enum BlockingBehavior {
     65             LoadSynchronously,
     66             LoadAsynchronously
     67         };
     68 
     69         DocumentThreadableLoader(Document*, ThreadableLoaderClient*, BlockingBehavior blockingBehavior, const ResourceRequest&, const ThreadableLoaderOptions& options);
     70 
     71         virtual void willSendRequest(SubresourceLoader*, ResourceRequest&, const ResourceResponse& redirectResponse);
     72         virtual void didSendData(SubresourceLoader*, unsigned long long bytesSent, unsigned long long totalBytesToBeSent);
     73 
     74         virtual void didReceiveResponse(SubresourceLoader*, const ResourceResponse&);
     75         virtual void didReceiveData(SubresourceLoader*, const char*, int lengthReceived);
     76         virtual void didFinishLoading(SubresourceLoader*);
     77         virtual void didFail(SubresourceLoader*, const ResourceError&);
     78 
     79         virtual bool getShouldUseCredentialStorage(SubresourceLoader*, bool& shouldUseCredentialStorage);
     80         virtual void didReceiveAuthenticationChallenge(SubresourceLoader*, const AuthenticationChallenge&);
     81         virtual void receivedCancellation(SubresourceLoader*, const AuthenticationChallenge&);
     82 
     83         void didFinishLoading(unsigned long identifier);
     84         void makeSimpleCrossOriginAccessRequest(const ResourceRequest& request);
     85         void makeCrossOriginAccessRequestWithPreflight(const ResourceRequest& request);
     86         void preflightSuccess();
     87         void preflightFailure();
     88 
     89         void loadRequest(const ResourceRequest&, SecurityCheckPolicy);
     90         bool isAllowedRedirect(const KURL&);
     91 
     92         RefPtr<SubresourceLoader> m_loader;
     93         ThreadableLoaderClient* m_client;
     94         Document* m_document;
     95         ThreadableLoaderOptions m_options;
     96         bool m_sameOriginRequest;
     97         bool m_async;
     98         OwnPtr<ResourceRequest> m_actualRequest;  // non-null during Access Control preflight checks
     99     };
    100 
    101 } // namespace WebCore
    102 
    103 #endif // DocumentThreadableLoader_h
    104