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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 
     32 #ifndef PingLoader_h
     33 #define PingLoader_h
     34 
     35 #include "core/loader/ResourceLoaderOptions.h"
     36 #include "core/platform/Timer.h"
     37 #include "public/platform/WebURLLoaderClient.h"
     38 #include "wtf/Noncopyable.h"
     39 #include "wtf/RefPtr.h"
     40 
     41 namespace WebCore {
     42 
     43 class FormData;
     44 class Frame;
     45 class KURL;
     46 class ResourceError;
     47 class ResourceHandle;
     48 class ResourceRequest;
     49 class ResourceResponse;
     50 
     51 // This class triggers asynchronous loads independent of Frame staying alive (i.e., auditing pingbacks).
     52 // Since nothing depends on resources loaded through this class, we just want
     53 // to allow the load to live long enough to ensure the message was actually sent.
     54 // Therefore, as soon as a callback is received from the ResourceHandle, this class
     55 // will cancel the load and delete itself.
     56 class PingLoader : private WebKit::WebURLLoaderClient {
     57     WTF_MAKE_NONCOPYABLE(PingLoader); WTF_MAKE_FAST_ALLOCATED;
     58 public:
     59     enum ViolationReportType {
     60         ContentSecurityPolicyViolationReport,
     61         XSSAuditorViolationReport
     62     };
     63 
     64     static void loadImage(Frame*, const KURL& url);
     65     static void sendPing(Frame*, const KURL& pingURL, const KURL& destinationURL);
     66     static void sendViolationReport(Frame*, const KURL& reportURL, PassRefPtr<FormData> report, ViolationReportType);
     67 
     68     virtual ~PingLoader();
     69 
     70 private:
     71     PingLoader(Frame*, ResourceRequest&, StoredCredentials = AllowStoredCredentials);
     72 
     73     virtual void didReceiveResponse(WebKit::WebURLLoader*, const WebKit::WebURLResponse&) OVERRIDE { delete this; }
     74     virtual void didReceiveData(WebKit::WebURLLoader*, const char*, int, int) OVERRIDE { delete this; }
     75     virtual void didFinishLoading(WebKit::WebURLLoader*, double) OVERRIDE { delete this; }
     76     virtual void didFail(WebKit::WebURLLoader*, const WebKit::WebURLError&) OVERRIDE { delete this; }
     77     void timeout(Timer<PingLoader>*) { delete this; }
     78 
     79     OwnPtr<WebKit::WebURLLoader> m_loader;
     80     Timer<PingLoader> m_timeout;
     81 };
     82 
     83 }
     84 
     85 #endif
     86