code.vuplus.com Git - vuplus_webkit/blob - Source/WebCore/platform/network/ResourceHandle.cpp

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   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
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  24  */
  25
  26 #include "config.h"
  27 #include "ResourceHandle.h"
  28 #include "ResourceHandleInternal.h"
  29
  30 #include "BlobRegistry.h"
  31 #include "DNS.h"
  32 #include "Logging.h"
  33 #include "ResourceHandleClient.h"
  34 #include "Timer.h"
  35 #include <algorithm>
  36 #include <wtf/text/CString.h>
  37
  38 namespace WebCore {
  39
  40 static bool shouldForceContentSniffing;
  41
  42 ResourceHandle::ResourceHandle(const ResourceRequest& request, ResourceHandleClient* client, bool defersLoading, bool shouldContentSniff)
  43     : d(adoptPtr(new ResourceHandleInternal(this, request, client, defersLoading, shouldContentSniff && shouldContentSniffURL(request.url()))))
  44 {
  45     if (!request.url().isValid()) {
  46         scheduleFailure(InvalidURLFailure);
  47         return;
  48     }
  49
  50     if (!portAllowed(request.url())) {
  51         scheduleFailure(BlockedFailure);
  52         return;
  53     }
  54 }
  55
  56 PassRefPtr<ResourceHandle> ResourceHandle::create(NetworkingContext* context, const ResourceRequest& request, ResourceHandleClient* client, bool defersLoading, bool shouldContentSniff)
  57 {
  58 #if ENABLE(BLOB)
  59     if (request.url().protocolIs("blob")) {
  60         PassRefPtr<ResourceHandle> handle = blobRegistry().createResourceHandle(request, client);
  61         if (handle)
  62             return handle;
  63     }
  64 #endif
  65
  66     RefPtr<ResourceHandle> newHandle(adoptRef(new ResourceHandle(request, client, defersLoading, shouldContentSniff)));
  67
  68     if (newHandle->d->m_scheduledFailureType != NoFailure)
  69         return newHandle.release();
  70
  71     if (newHandle->start(context))
  72         return newHandle.release();
  73
  74     return 0;
  75 }
  76
  77 void ResourceHandle::scheduleFailure(FailureType type)
  78 {
  79     d->m_scheduledFailureType = type;
  80     d->m_failureTimer.startOneShot(0);
  81 }
  82
  83 void ResourceHandle::fireFailure(Timer<ResourceHandle>*)
  84 {
  85     if (!client())
  86         return;
  87
  88     switch (d->m_scheduledFailureType) {
  89         case NoFailure:
  90             ASSERT_NOT_REACHED();
  91             return;
  92         case BlockedFailure:
  93             d->m_scheduledFailureType = NoFailure;
  94             client()->wasBlocked(this);
  95             return;
  96         case InvalidURLFailure:
  97             d->m_scheduledFailureType = NoFailure;
  98             client()->cannotShowURL(this);
  99             return;
 100     }
 101
 102     ASSERT_NOT_REACHED();
 103 }
 104
 105 ResourceHandleClient* ResourceHandle::client() const
 106 {
 107     return d->m_client;
 108 }
 109
 110 void ResourceHandle::setClient(ResourceHandleClient* client)
 111 {
 112     d->m_client = client;
 113 }
 114
 115 ResourceRequest& ResourceHandle::firstRequest()
 116 {
 117     return d->m_firstRequest;
 118 }
 119
 120 const String& ResourceHandle::lastHTTPMethod() const
 121 {
 122     return d->m_lastHTTPMethod;
 123 }
 124
 125 bool ResourceHandle::hasAuthenticationChallenge() const
 126 {
 127     return !d->m_currentWebChallenge.isNull();
 128 }
 129
 130 void ResourceHandle::clearAuthentication()
 131 {
 132 #if PLATFORM(MAC)
 133     d->m_currentMacChallenge = nil;
 134 #endif
 135     d->m_currentWebChallenge.nullify();
 136 }
 137
 138 bool ResourceHandle::shouldContentSniff() const
 139 {
 140     return d->m_shouldContentSniff;
 141 }
 142
 143 bool ResourceHandle::shouldContentSniffURL(const KURL& url)
 144 {
 145 #if PLATFORM(MAC)
 146     if (shouldForceContentSniffing)
 147         return true;
 148 #endif
 149     // We shouldn't content sniff file URLs as their MIME type should be established via their extension.
 150     return !url.protocolIs("file");
 151 }
 152
 153 void ResourceHandle::forceContentSniffing()
 154 {
 155     shouldForceContentSniffing = true;
 156 }
 157
 158 void ResourceHandle::setDefersLoading(bool defers)
 159 {
 160     LOG(Network, "Handle %p setDefersLoading(%s)", this, defers ? "true" : "false");
 161
 162     ASSERT(d->m_defersLoading != defers); // Deferring is not counted, so calling setDefersLoading() repeatedly is likely to be in error.
 163     d->m_defersLoading = defers;
 164
 165     if (defers) {
 166         ASSERT(d->m_failureTimer.isActive() == (d->m_scheduledFailureType != NoFailure));
 167         if (d->m_failureTimer.isActive())
 168             d->m_failureTimer.stop();
 169     } else if (d->m_scheduledFailureType != NoFailure) {
 170         ASSERT(!d->m_failureTimer.isActive());
 171         d->m_failureTimer.startOneShot(0);
 172     }
 173
 174     platformSetDefersLoading(defers);
 175 }
 176
 177 #if !USE(SOUP)
 178 void ResourceHandle::prepareForURL(const KURL& url)
 179 {
 180     return prefetchDNS(url.host());
 181 }
 182 #endif
 183
 184 void ResourceHandle::cacheMetadata(const ResourceResponse&, const Vector<char>&)
 185 {
 186     // Optionally implemented by platform.
 187 }
 188
 189 } // namespace WebCore