author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 16:17:46 +0300 | |
branch | RCL_3 |
changeset 93 | 79859ed3eea9 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (C) 2006, 2007 Apple Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
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* its contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#include "config.h" |
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#include "SubresourceLoader.h" |
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#include "Document.h" |
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#include "DocumentLoader.h" |
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#include "Frame.h" |
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#include "FrameLoader.h" |
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#include "Logging.h" |
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#include "ResourceHandle.h" |
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#include "ResourceRequest.h" |
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#include "SubresourceLoaderClient.h" |
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#include "SharedBuffer.h" |
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|
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namespace WebCore { |
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|
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#ifndef NDEBUG |
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WTFLogChannel LogWebCoreSubresourceLoaderLeaks = { 0x00000000, "", WTFLogChannelOn }; |
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|
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struct SubresourceLoaderCounter { |
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static unsigned count; |
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|
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~SubresourceLoaderCounter() |
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{ |
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if (count) |
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LOG(WebCoreSubresourceLoaderLeaks, "LEAK: %u SubresourceLoader\n", count); |
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} |
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}; |
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unsigned SubresourceLoaderCounter::count = 0; |
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static SubresourceLoaderCounter subresourceLoaderCounter; |
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#endif |
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SubresourceLoader::SubresourceLoader(Frame* frame, SubresourceLoaderClient* client, bool sendResourceLoadCallbacks, bool shouldContentSniff) |
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: ResourceLoader(frame, sendResourceLoadCallbacks, shouldContentSniff) |
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, m_client(client) |
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, m_loadingMultipartContent(false) |
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{ |
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#ifndef NDEBUG |
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++SubresourceLoaderCounter::count; |
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#endif |
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m_documentLoader->addSubresourceLoader(this); |
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} |
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SubresourceLoader::~SubresourceLoader() |
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{ |
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#ifndef NDEBUG |
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--SubresourceLoaderCounter::count; |
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#endif |
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} |
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bool SubresourceLoader::load(const ResourceRequest& r) |
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{ |
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m_frame->loader()->didTellBridgeAboutLoad(r.url().url()); |
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return ResourceLoader::load(r); |
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} |
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PassRefPtr<SubresourceLoader> SubresourceLoader::create(Frame* frame, SubresourceLoaderClient* client, const ResourceRequest& request, bool skipCanLoadCheck, bool sendResourceLoadCallbacks, bool shouldContentSniff) |
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{ |
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if (!frame) |
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return 0; |
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FrameLoader* fl = frame->loader(); |
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if (!skipCanLoadCheck && fl->state() == FrameStateProvisional) |
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return 0; |
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ResourceRequest newRequest = request; |
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if (!skipCanLoadCheck |
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&& FrameLoader::restrictAccessToLocal() |
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&& !FrameLoader::canLoad(request.url(), frame->document())) { |
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FrameLoader::reportLocalLoadFailed(frame->page(), request.url().url()); |
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return 0; |
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} |
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if (FrameLoader::shouldHideReferrer(request.url(), fl->outgoingReferrer())) |
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newRequest.clearHTTPReferrer(); |
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else if (!request.httpReferrer()) |
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newRequest.setHTTPReferrer(fl->outgoingReferrer()); |
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108 |
// Use the original request's cache policy for two reasons: |
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109 |
// 1. For POST requests, we mutate the cache policy for the main resource, |
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110 |
// but we do not want this to apply to subresources |
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111 |
// 2. Delegates that modify the cache policy using willSendRequest: should |
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112 |
// not affect any other resources. Such changes need to be done |
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113 |
// per request. |
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114 |
if (newRequest.isConditional()) |
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115 |
newRequest.setCachePolicy(ReloadIgnoringCacheData); |
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116 |
else |
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117 |
newRequest.setCachePolicy(fl->originalRequest().cachePolicy()); |
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118 |
|
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119 |
fl->addExtraFieldsToRequest(newRequest, false, false); |
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120 |
|
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121 |
RefPtr<SubresourceLoader> subloader(new SubresourceLoader(frame, client, sendResourceLoadCallbacks, shouldContentSniff)); |
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122 |
if (!subloader->load(newRequest)) |
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123 |
return 0; |
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124 |
|
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125 |
return subloader.release(); |
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126 |
} |
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127 |
|
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128 |
void SubresourceLoader::willSendRequest(ResourceRequest& newRequest, const ResourceResponse& redirectResponse) |
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129 |
{ |
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130 |
ResourceLoader::willSendRequest(newRequest, redirectResponse); |
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131 |
if (!newRequest.isNull() && m_originalURL != newRequest.url() && m_client) |
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132 |
m_client->willSendRequest(this, newRequest, redirectResponse); |
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133 |
} |
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134 |
|
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135 |
void SubresourceLoader::didReceiveResponse(const ResourceResponse& r) |
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136 |
{ |
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137 |
ASSERT(!r.isNull()); |
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138 |
|
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139 |
if (r.isMultipart()) |
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140 |
m_loadingMultipartContent = true; |
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141 |
|
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142 |
// Reference the object in this method since the additional processing can do |
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143 |
// anything including removing the last reference to this object; one example of this is 3266216. |
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144 |
RefPtr<SubresourceLoader> protect(this); |
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145 |
|
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146 |
if (m_client) |
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147 |
m_client->didReceiveResponse(this, r); |
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148 |
|
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149 |
// The loader can cancel a load if it receives a multipart response for a non-image |
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150 |
if (reachedTerminalState()) |
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151 |
return; |
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152 |
ResourceLoader::didReceiveResponse(r); |
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153 |
|
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154 |
RefPtr<SharedBuffer> buffer = resourceData(); |
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155 |
if (m_loadingMultipartContent && buffer && buffer->size()) { |
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156 |
// Since a subresource loader does not load multipart sections progressively, |
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157 |
// deliver the previously received data to the loader all at once now. |
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158 |
// Then clear the data to make way for the next multipart section. |
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159 |
if (m_client) |
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160 |
m_client->didReceiveData(this, buffer->data(), buffer->size()); |
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161 |
clearResourceData(); |
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162 |
|
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163 |
// After the first multipart section is complete, signal to delegates that this load is "finished" |
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164 |
m_documentLoader->subresourceLoaderFinishedLoadingOnePart(this); |
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165 |
didFinishLoadingOnePart(); |
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166 |
} |
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|
167 |
} |
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|
168 |
|
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169 |
void SubresourceLoader::didReceiveData(const char* data, int length, long long lengthReceived, bool allAtOnce) |
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170 |
{ |
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171 |
// Reference the object in this method since the additional processing can do |
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172 |
// anything including removing the last reference to this object; one example of this is 3266216. |
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|
173 |
RefPtr<SubresourceLoader> protect(this); |
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|
174 |
|
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|
175 |
ResourceLoader::didReceiveData(data, length, lengthReceived, allAtOnce); |
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|
176 |
|
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|
177 |
// A subresource loader does not load multipart sections progressively. |
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178 |
// So don't deliver any data to the loader yet. |
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179 |
if (!m_loadingMultipartContent && m_client) |
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180 |
m_client->didReceiveData(this, data, length); |
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|
181 |
} |
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|
182 |
|
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|
183 |
void SubresourceLoader::didFinishLoading() |
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|
184 |
{ |
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185 |
if (cancelled()) |
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186 |
return; |
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187 |
ASSERT(!reachedTerminalState()); |
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|
188 |
|
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|
189 |
// Calling removeSubresourceLoader will likely result in a call to deref, so we must protect ourselves. |
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|
190 |
RefPtr<SubresourceLoader> protect(this); |
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|
191 |
|
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192 |
if (m_client) |
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|
193 |
m_client->didFinishLoading(this); |
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|
194 |
|
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195 |
m_handle = 0; |
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|
196 |
|
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197 |
if (cancelled()) |
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198 |
return; |
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|
199 |
m_documentLoader->removeSubresourceLoader(this); |
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|
200 |
ResourceLoader::didFinishLoading(); |
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|
201 |
} |
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|
202 |
|
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203 |
void SubresourceLoader::didFail(const ResourceError& error) |
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204 |
{ |
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205 |
if (cancelled()) |
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206 |
return; |
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|
207 |
ASSERT(!reachedTerminalState()); |
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|
208 |
|
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|
209 |
// Calling removeSubresourceLoader will likely result in a call to deref, so we must protect ourselves. |
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210 |
RefPtr<SubresourceLoader> protect(this); |
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|
211 |
|
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212 |
if (m_client) |
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213 |
m_client->didFail(this, error); |
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|
214 |
|
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|
215 |
m_handle = 0; |
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|
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|
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if (cancelled()) |
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return; |
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m_documentLoader->removeSubresourceLoader(this); |
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ResourceLoader::didFail(error); |
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} |
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void SubresourceLoader::didCancel(const ResourceError& error) |
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{ |
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ASSERT(!reachedTerminalState()); |
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// Calling removeSubresourceLoader will likely result in a call to deref, so we must protect ourselves. |
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RefPtr<SubresourceLoader> protect(this); |
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if (m_client) |
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m_client->didFail(this, error); |
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if (cancelled()) |
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return; |
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m_documentLoader->removeSubresourceLoader(this); |
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ResourceLoader::didCancel(error); |
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} |
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|
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void SubresourceLoader::receivedCancellation(const AuthenticationChallenge& challenge) |
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{ |
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ASSERT(!reachedTerminalState()); |
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|
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RefPtr<SubresourceLoader> protect(this); |
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|
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if (m_client) |
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m_client->receivedCancellation(this, challenge); |
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|
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ResourceLoader::receivedCancellation(challenge); |
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} |
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} |