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      1 /*
      2  * Copyright (C) 2006 Apple Computer, 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
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "NetscapePlugInStreamLoader.h"
     31 
     32 #include "FrameLoader.h"
     33 #include "DocumentLoader.h"
     34 
     35 namespace WebCore {
     36 
     37 NetscapePlugInStreamLoader::NetscapePlugInStreamLoader(Frame* frame, NetscapePlugInStreamLoaderClient* client)
     38     : ResourceLoader(frame, true, true)
     39     , m_client(client)
     40 {
     41 }
     42 
     43 NetscapePlugInStreamLoader::~NetscapePlugInStreamLoader()
     44 {
     45 }
     46 
     47 PassRefPtr<NetscapePlugInStreamLoader> NetscapePlugInStreamLoader::create(Frame* frame, NetscapePlugInStreamLoaderClient* client, const ResourceRequest& request)
     48 {
     49     RefPtr<NetscapePlugInStreamLoader> loader(adoptRef(new NetscapePlugInStreamLoader(frame, client)));
     50     loader->setShouldBufferData(false);
     51     loader->documentLoader()->addPlugInStreamLoader(loader.get());
     52     if (!loader->init(request))
     53         return 0;
     54 
     55     return loader.release();
     56 }
     57 
     58 bool NetscapePlugInStreamLoader::isDone() const
     59 {
     60     return !m_client;
     61 }
     62 
     63 void NetscapePlugInStreamLoader::releaseResources()
     64 {
     65     m_client = 0;
     66     ResourceLoader::releaseResources();
     67 }
     68 
     69 void NetscapePlugInStreamLoader::didReceiveResponse(const ResourceResponse& response)
     70 {
     71     RefPtr<NetscapePlugInStreamLoader> protect(this);
     72 
     73     m_client->didReceiveResponse(this, response);
     74 
     75     // Don't continue if the stream is cancelled
     76     if (!m_client)
     77         return;
     78 
     79     ResourceLoader::didReceiveResponse(response);
     80 
     81     // Don't continue if the stream is cancelled
     82     if (!m_client)
     83         return;
     84 
     85     if (!response.isHTTP())
     86         return;
     87 
     88     if (m_client->wantsAllStreams())
     89         return;
     90 
     91     if (response.httpStatusCode() < 100 || response.httpStatusCode() >= 400)
     92         didCancel(frameLoader()->fileDoesNotExistError(response));
     93 }
     94 
     95 void NetscapePlugInStreamLoader::didReceiveData(const char* data, int length, long long encodedDataLength, bool allAtOnce)
     96 {
     97     RefPtr<NetscapePlugInStreamLoader> protect(this);
     98 
     99     m_client->didReceiveData(this, data, length);
    100 
    101     ResourceLoader::didReceiveData(data, length, encodedDataLength, allAtOnce);
    102 }
    103 
    104 void NetscapePlugInStreamLoader::didFinishLoading(double finishTime)
    105 {
    106     RefPtr<NetscapePlugInStreamLoader> protect(this);
    107 
    108     m_documentLoader->removePlugInStreamLoader(this);
    109     m_client->didFinishLoading(this);
    110     ResourceLoader::didFinishLoading(finishTime);
    111 }
    112 
    113 void NetscapePlugInStreamLoader::didFail(const ResourceError& error)
    114 {
    115     RefPtr<NetscapePlugInStreamLoader> protect(this);
    116 
    117     m_documentLoader->removePlugInStreamLoader(this);
    118     m_client->didFail(this, error);
    119     ResourceLoader::didFail(error);
    120 }
    121 
    122 void NetscapePlugInStreamLoader::didCancel(const ResourceError& error)
    123 {
    124     RefPtr<NetscapePlugInStreamLoader> protect(this);
    125 
    126     m_client->didFail(this, error);
    127 
    128     // If calling didFail spins the run loop the stream loader can reach the terminal state.
    129     // If that's the case we just return early.
    130     if (reachedTerminalState())
    131         return;
    132 
    133     // We need to remove the stream loader after the call to didFail, since didFail can
    134     // spawn a new run loop and if the loader has been removed it won't be deferred when
    135     // the document loader is asked to defer loading.
    136     m_documentLoader->removePlugInStreamLoader(this);
    137 
    138     ResourceLoader::didCancel(error);
    139 }
    140 
    141 }
    142