1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
7 #include "content/browser/loader/resource_dispatcher_host_impl.h"
13 #include "base/bind.h"
14 #include "base/bind_helpers.h"
15 #include "base/command_line.h"
16 #include "base/compiler_specific.h"
17 #include "base/debug/alias.h"
18 #include "base/logging.h"
19 #include "base/memory/scoped_ptr.h"
20 #include "base/memory/shared_memory.h"
21 #include "base/message_loop/message_loop.h"
22 #include "base/metrics/histogram.h"
23 #include "base/metrics/sparse_histogram.h"
24 #include "base/stl_util.h"
25 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
26 #include "content/browser/appcache/chrome_appcache_service.h"
27 #include "content/browser/cert_store_impl.h"
28 #include "content/browser/child_process_security_policy_impl.h"
29 #include "content/browser/cross_site_request_manager.h"
30 #include "content/browser/download/download_resource_handler.h"
31 #include "content/browser/download/save_file_manager.h"
32 #include "content/browser/download/save_file_resource_handler.h"
33 #include "content/browser/fileapi/chrome_blob_storage_context.h"
34 #include "content/browser/loader/async_resource_handler.h"
35 #include "content/browser/loader/buffered_resource_handler.h"
36 #include "content/browser/loader/cross_site_resource_handler.h"
37 #include "content/browser/loader/detachable_resource_handler.h"
38 #include "content/browser/loader/power_save_block_resource_throttle.h"
39 #include "content/browser/loader/redirect_to_file_resource_handler.h"
40 #include "content/browser/loader/resource_message_filter.h"
41 #include "content/browser/loader/resource_request_info_impl.h"
42 #include "content/browser/loader/stream_resource_handler.h"
43 #include "content/browser/loader/sync_resource_handler.h"
44 #include "content/browser/loader/throttling_resource_handler.h"
45 #include "content/browser/loader/upload_data_stream_builder.h"
46 #include "content/browser/plugin_service_impl.h"
47 #include "content/browser/renderer_host/render_view_host_delegate.h"
48 #include "content/browser/renderer_host/render_view_host_impl.h"
49 #include "content/browser/resource_context_impl.h"
50 #include "content/browser/streams/stream.h"
51 #include "content/browser/streams/stream_context.h"
52 #include "content/browser/streams/stream_registry.h"
53 #include "content/browser/worker_host/worker_service_impl.h"
54 #include "content/browser/web_contents/web_contents_impl.h"
55 #include "content/common/resource_messages.h"
56 #include "content/common/ssl_status_serialization.h"
57 #include "content/common/view_messages.h"
58 #include "content/public/browser/browser_thread.h"
59 #include "content/public/browser/content_browser_client.h"
60 #include "content/public/browser/download_manager.h"
61 #include "content/public/browser/download_url_parameters.h"
62 #include "content/public/browser/global_request_id.h"
63 #include "content/public/browser/resource_dispatcher_host_delegate.h"
64 #include "content/public/browser/resource_request_details.h"
65 #include "content/public/browser/resource_throttle.h"
66 #include "content/public/browser/stream_handle.h"
67 #include "content/public/browser/user_metrics.h"
68 #include "content/public/common/content_switches.h"
69 #include "content/public/common/process_type.h"
70 #include "content/public/common/url_constants.h"
71 #include "ipc/ipc_message_macros.h"
72 #include "ipc/ipc_message_start.h"
73 #include "net/base/auth.h"
74 #include "net/base/load_flags.h"
75 #include "net/base/mime_util.h"
76 #include "net/base/net_errors.h"
77 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
78 #include "net/base/request_priority.h"
79 #include "net/base/upload_data_stream.h"
80 #include "net/cert/cert_status_flags.h"
81 #include "net/cookies/cookie_monster.h"
82 #include "net/http/http_response_headers.h"
83 #include "net/http/http_response_info.h"
84 #include "net/ssl/ssl_cert_request_info.h"
85 #include "net/url_request/url_request.h"
86 #include "net/url_request/url_request_context.h"
87 #include "net/url_request/url_request_job_factory.h"
88 #include "webkit/browser/appcache/appcache_interceptor.h"
89 #include "webkit/common/blob/blob_data.h"
90 #include "webkit/browser/blob/blob_data_handle.h"
91 #include "webkit/browser/blob/blob_storage_context.h"
92 #include "webkit/browser/blob/blob_url_request_job_factory.h"
93 #include "webkit/browser/fileapi/file_permission_policy.h"
94 #include "webkit/browser/fileapi/file_system_context.h"
95 #include "webkit/common/appcache/appcache_interfaces.h"
96 #include "webkit/common/blob/shareable_file_reference.h"
97 #include "webkit/common/resource_request_body.h"
100 using base::TimeDelta;
101 using base::TimeTicks;
102 using webkit_blob::ShareableFileReference;
103 using webkit_glue::ResourceRequestBody;
105 // ----------------------------------------------------------------------------
111 static ResourceDispatcherHostImpl* g_resource_dispatcher_host;
113 // The interval for calls to ResourceDispatcherHostImpl::UpdateLoadStates
114 const int kUpdateLoadStatesIntervalMsec = 100;
116 // Maximum byte "cost" of all the outstanding requests for a renderer.
117 // See delcaration of |max_outstanding_requests_cost_per_process_| for details.
118 // This bound is 25MB, which allows for around 6000 outstanding requests.
119 const int kMaxOutstandingRequestsCostPerProcess = 26214400;
121 // The number of milliseconds after noting a user gesture that we will
122 // tag newly-created URLRequest objects with the
123 // net::LOAD_MAYBE_USER_GESTURE load flag. This is a fairly arbitrary
124 // guess at how long to expect direct impact from a user gesture, but
125 // this should be OK as the load flag is a best-effort thing only,
126 // rather than being intended as fully accurate.
127 const int kUserGestureWindowMs = 3500;
129 // Ratio of |max_num_in_flight_requests_| that any one renderer is allowed to
130 // use. Arbitrarily chosen.
131 const double kMaxRequestsPerProcessRatio = 0.45;
133 // TODO(jkarlin): The value is high to reduce the chance of the detachable
134 // request timing out, forcing a blocked second request to open a new connection
135 // and start over. Reduce this value once we have a better idea of what it
136 // should be and once we stop blocking multiple simultaneous requests for the
137 // same resource (see bugs 46104 and 31014).
138 const int kDefaultDetachableCancelDelayMs = 30000;
140 bool IsDetachableResourceType(ResourceType::Type type) {
142 case ResourceType::PREFETCH:
143 case ResourceType::PING:
150 // Aborts a request before an URLRequest has actually been created.
151 void AbortRequestBeforeItStarts(ResourceMessageFilter* filter,
152 IPC::Message* sync_result,
155 SyncLoadResult result;
156 result.error_code = net::ERR_ABORTED;
157 ResourceHostMsg_SyncLoad::WriteReplyParams(sync_result, result);
158 filter->Send(sync_result);
160 // Tell the renderer that this request was disallowed.
161 ResourceMsg_RequestCompleteData request_complete_data;
162 request_complete_data.error_code = net::ERR_ABORTED;
163 request_complete_data.was_ignored_by_handler = false;
164 request_complete_data.exists_in_cache = false;
165 // No security info needed, connection not established.
166 request_complete_data.completion_time = base::TimeTicks();
167 request_complete_data.encoded_data_length = 0;
168 filter->Send(new ResourceMsg_RequestComplete(
169 request_id, request_complete_data));
173 void SetReferrerForRequest(net::URLRequest* request, const Referrer& referrer) {
174 if (!referrer.url.is_valid() ||
175 CommandLine::ForCurrentProcess()->HasSwitch(switches::kNoReferrers)) {
176 request->SetReferrer(std::string());
178 request->SetReferrer(referrer.url.spec());
181 net::URLRequest::ReferrerPolicy net_referrer_policy =
182 net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
183 switch (referrer.policy) {
184 case blink::WebReferrerPolicyDefault:
185 net_referrer_policy =
186 net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
188 case blink::WebReferrerPolicyAlways:
189 case blink::WebReferrerPolicyNever:
190 case blink::WebReferrerPolicyOrigin:
191 net_referrer_policy = net::URLRequest::NEVER_CLEAR_REFERRER;
194 request->set_referrer_policy(net_referrer_policy);
197 // Consults the RendererSecurity policy to determine whether the
198 // ResourceDispatcherHostImpl should service this request. A request might be
199 // disallowed if the renderer is not authorized to retrieve the request URL or
200 // if the renderer is attempting to upload an unauthorized file.
201 bool ShouldServiceRequest(int process_type,
203 const ResourceHostMsg_Request& request_data,
204 fileapi::FileSystemContext* file_system_context) {
205 if (process_type == PROCESS_TYPE_PLUGIN)
208 ChildProcessSecurityPolicyImpl* policy =
209 ChildProcessSecurityPolicyImpl::GetInstance();
211 // Check if the renderer is permitted to request the requested URL.
212 if (!policy->CanRequestURL(child_id, request_data.url)) {
213 VLOG(1) << "Denied unauthorized request for "
214 << request_data.url.possibly_invalid_spec();
218 // Check if the renderer is permitted to upload the requested files.
219 if (request_data.request_body.get()) {
220 const std::vector<ResourceRequestBody::Element>* uploads =
221 request_data.request_body->elements();
222 std::vector<ResourceRequestBody::Element>::const_iterator iter;
223 for (iter = uploads->begin(); iter != uploads->end(); ++iter) {
224 if (iter->type() == ResourceRequestBody::Element::TYPE_FILE &&
225 !policy->CanReadFile(child_id, iter->path())) {
226 NOTREACHED() << "Denied unauthorized upload of "
227 << iter->path().value();
230 if (iter->type() == ResourceRequestBody::Element::TYPE_FILE_FILESYSTEM) {
231 fileapi::FileSystemURL url =
232 file_system_context->CrackURL(iter->filesystem_url());
233 if (!policy->CanReadFileSystemFile(child_id, url)) {
234 NOTREACHED() << "Denied unauthorized upload of "
235 << iter->filesystem_url().spec();
245 void RemoveDownloadFileFromChildSecurityPolicy(int child_id,
246 const base::FilePath& path) {
247 ChildProcessSecurityPolicyImpl::GetInstance()->RevokeAllPermissionsForFile(
252 #pragma warning(disable: 4748)
253 #pragma optimize("", off)
257 #pragma optimize("", on)
258 #pragma warning(default: 4748)
261 DownloadInterruptReason CallbackAndReturn(
262 const DownloadUrlParameters::OnStartedCallback& started_cb,
263 DownloadInterruptReason interrupt_reason) {
264 if (started_cb.is_null())
265 return interrupt_reason;
266 BrowserThread::PostTask(
270 started_cb, static_cast<DownloadItem*>(NULL), interrupt_reason));
272 return interrupt_reason;
275 int GetCertID(net::URLRequest* request, int child_id) {
276 if (request->ssl_info().cert.get()) {
277 return CertStore::GetInstance()->StoreCert(request->ssl_info().cert.get(),
283 void NotifyRedirectOnUI(int render_process_id,
284 int render_frame_host,
285 scoped_ptr<ResourceRedirectDetails> details) {
286 RenderFrameHostImpl* host =
287 RenderFrameHostImpl::FromID(render_process_id, render_frame_host);
288 WebContentsImpl* web_contents =
289 static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(host));
292 web_contents->DidGetRedirectForResourceRequest(
293 host->render_view_host(), *details.get());
296 void NotifyResponseOnUI(int render_process_id,
297 int render_frame_host,
298 scoped_ptr<ResourceRequestDetails> details) {
299 RenderFrameHostImpl* host =
300 RenderFrameHostImpl::FromID(render_process_id, render_frame_host);
301 WebContentsImpl* web_contents =
302 static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(host));
305 web_contents->DidGetResourceResponseStart(*details.get());
309 const net::SignedCertificateTimestampAndStatus& sct_status) {
310 return sct_status.status == net::ct::SCT_STATUS_OK;
316 ResourceDispatcherHost* ResourceDispatcherHost::Get() {
317 return g_resource_dispatcher_host;
320 ResourceDispatcherHostImpl::ResourceDispatcherHostImpl()
321 : save_file_manager_(new SaveFileManager()),
324 num_in_flight_requests_(0),
325 max_num_in_flight_requests_(base::SharedMemory::GetHandleLimit()),
326 max_num_in_flight_requests_per_process_(
328 max_num_in_flight_requests_ * kMaxRequestsPerProcessRatio)),
329 max_outstanding_requests_cost_per_process_(
330 kMaxOutstandingRequestsCostPerProcess),
333 allow_cross_origin_auth_prompt_(false) {
334 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
335 DCHECK(!g_resource_dispatcher_host);
336 g_resource_dispatcher_host = this;
338 GetContentClient()->browser()->ResourceDispatcherHostCreated();
340 ANNOTATE_BENIGN_RACE(
341 &last_user_gesture_time_,
342 "We don't care about the precise value, see http://crbug.com/92889");
344 BrowserThread::PostTask(BrowserThread::IO,
346 base::Bind(&ResourceDispatcherHostImpl::OnInit,
347 base::Unretained(this)));
349 update_load_states_timer_.reset(
350 new base::RepeatingTimer<ResourceDispatcherHostImpl>());
353 ResourceDispatcherHostImpl::~ResourceDispatcherHostImpl() {
354 DCHECK(outstanding_requests_stats_map_.empty());
355 DCHECK(g_resource_dispatcher_host);
356 g_resource_dispatcher_host = NULL;
360 ResourceDispatcherHostImpl* ResourceDispatcherHostImpl::Get() {
361 return g_resource_dispatcher_host;
364 void ResourceDispatcherHostImpl::SetDelegate(
365 ResourceDispatcherHostDelegate* delegate) {
366 delegate_ = delegate;
369 void ResourceDispatcherHostImpl::SetAllowCrossOriginAuthPrompt(bool value) {
370 allow_cross_origin_auth_prompt_ = value;
373 void ResourceDispatcherHostImpl::AddResourceContext(ResourceContext* context) {
374 active_resource_contexts_.insert(context);
377 void ResourceDispatcherHostImpl::RemoveResourceContext(
378 ResourceContext* context) {
379 CHECK(ContainsKey(active_resource_contexts_, context));
380 active_resource_contexts_.erase(context);
383 void ResourceDispatcherHostImpl::CancelRequestsForContext(
384 ResourceContext* context) {
385 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
388 CHECK(ContainsKey(active_resource_contexts_, context));
390 // Note that request cancellation has side effects. Therefore, we gather all
391 // the requests to cancel first, and then we start cancelling. We assert at
392 // the end that there are no more to cancel since the context is about to go
394 typedef std::vector<linked_ptr<ResourceLoader> > LoaderList;
395 LoaderList loaders_to_cancel;
397 for (LoaderMap::iterator i = pending_loaders_.begin();
398 i != pending_loaders_.end();) {
399 if (i->second->GetRequestInfo()->GetContext() == context) {
400 loaders_to_cancel.push_back(i->second);
401 IncrementOutstandingRequestsMemory(-1, *i->second->GetRequestInfo());
402 pending_loaders_.erase(i++);
408 for (BlockedLoadersMap::iterator i = blocked_loaders_map_.begin();
409 i != blocked_loaders_map_.end();) {
410 BlockedLoadersList* loaders = i->second;
411 if (loaders->empty()) {
412 // This can happen if BlockRequestsForRoute() has been called for a route,
413 // but we haven't blocked any matching requests yet.
417 ResourceRequestInfoImpl* info = loaders->front()->GetRequestInfo();
418 if (info->GetContext() == context) {
419 blocked_loaders_map_.erase(i++);
420 for (BlockedLoadersList::const_iterator it = loaders->begin();
421 it != loaders->end(); ++it) {
422 linked_ptr<ResourceLoader> loader = *it;
423 info = loader->GetRequestInfo();
424 // We make the assumption that all requests on the list have the same
426 DCHECK_EQ(context, info->GetContext());
427 IncrementOutstandingRequestsMemory(-1, *info);
428 loaders_to_cancel.push_back(loader);
437 for (LoaderList::iterator i = loaders_to_cancel.begin();
438 i != loaders_to_cancel.end(); ++i) {
439 // There is no strict requirement that this be the case, but currently
440 // downloads, streams, detachable requests, and transferred requests are the
441 // only requests that aren't cancelled when the associated processes go
442 // away. It may be OK for this invariant to change in the future, but if
443 // this assertion fires without the invariant changing, then it's indicative
445 DCHECK((*i)->GetRequestInfo()->IsDownload() ||
446 (*i)->GetRequestInfo()->is_stream() ||
447 ((*i)->GetRequestInfo()->detachable_handler() &&
448 (*i)->GetRequestInfo()->detachable_handler()->is_detached()) ||
449 (*i)->is_transferring());
453 loaders_to_cancel.clear();
455 // Validate that no more requests for this context were added.
456 for (LoaderMap::const_iterator i = pending_loaders_.begin();
457 i != pending_loaders_.end(); ++i) {
458 // http://crbug.com/90971
459 CHECK_NE(i->second->GetRequestInfo()->GetContext(), context);
462 for (BlockedLoadersMap::const_iterator i = blocked_loaders_map_.begin();
463 i != blocked_loaders_map_.end(); ++i) {
464 BlockedLoadersList* loaders = i->second;
465 if (!loaders->empty()) {
466 ResourceRequestInfoImpl* info = loaders->front()->GetRequestInfo();
467 // http://crbug.com/90971
468 CHECK_NE(info->GetContext(), context);
473 DownloadInterruptReason ResourceDispatcherHostImpl::BeginDownload(
474 scoped_ptr<net::URLRequest> request,
475 const Referrer& referrer,
476 bool is_content_initiated,
477 ResourceContext* context,
481 scoped_ptr<DownloadSaveInfo> save_info,
483 const DownloadStartedCallback& started_callback) {
485 return CallbackAndReturn(started_callback,
486 DOWNLOAD_INTERRUPT_REASON_USER_SHUTDOWN);
488 const GURL& url = request->original_url();
490 // http://crbug.com/90971
492 base::strlcpy(url_buf, url.spec().c_str(), arraysize(url_buf));
493 base::debug::Alias(url_buf);
494 CHECK(ContainsKey(active_resource_contexts_, context));
496 SetReferrerForRequest(request.get(), referrer);
498 int extra_load_flags = net::LOAD_IS_DOWNLOAD;
500 // If there is upload data attached, only retrieve from cache because there
501 // is no current mechanism to prompt the user for their consent for a
502 // re-post. For GETs, try to retrieve data from the cache and skip
503 // validating the entry if present.
504 if (request->get_upload() != NULL)
505 extra_load_flags |= net::LOAD_ONLY_FROM_CACHE;
507 extra_load_flags |= net::LOAD_PREFERRING_CACHE;
509 extra_load_flags |= net::LOAD_DISABLE_CACHE;
511 request->SetLoadFlags(request->load_flags() | extra_load_flags);
513 // No need to get offline load flags for downloads, but make sure
514 // we have an OfflinePolicy to receive request completions.
515 GlobalRoutingID id(child_id, route_id);
516 if (!offline_policy_map_[id])
517 offline_policy_map_[id] = new OfflinePolicy();
519 // Check if the renderer is permitted to request the requested URL.
520 if (!ChildProcessSecurityPolicyImpl::GetInstance()->
521 CanRequestURL(child_id, url)) {
522 VLOG(1) << "Denied unauthorized download request for "
523 << url.possibly_invalid_spec();
524 return CallbackAndReturn(started_callback,
525 DOWNLOAD_INTERRUPT_REASON_NETWORK_INVALID_REQUEST);
530 const net::URLRequestContext* request_context = context->GetRequestContext();
531 if (!request_context->job_factory()->IsHandledURL(url)) {
532 VLOG(1) << "Download request for unsupported protocol: "
533 << url.possibly_invalid_spec();
534 return CallbackAndReturn(started_callback,
535 DOWNLOAD_INTERRUPT_REASON_NETWORK_INVALID_REQUEST);
538 ResourceRequestInfoImpl* extra_info =
539 CreateRequestInfo(child_id, route_id, true, context);
540 extra_info->AssociateWithRequest(request.get()); // Request takes ownership.
542 if (request->url().SchemeIs(chrome::kBlobScheme)) {
543 ChromeBlobStorageContext* blob_context =
544 GetChromeBlobStorageContextForResourceContext(context);
545 webkit_blob::BlobProtocolHandler::SetRequestedBlobDataHandle(
547 blob_context->context()->GetBlobDataFromPublicURL(request->url()));
550 // From this point forward, the |DownloadResourceHandler| is responsible for
551 // |started_callback|.
552 scoped_ptr<ResourceHandler> handler(
553 CreateResourceHandlerForDownload(request.get(), is_content_initiated,
554 true, download_id, save_info.Pass(),
557 BeginRequestInternal(request.Pass(), handler.Pass());
559 return DOWNLOAD_INTERRUPT_REASON_NONE;
562 void ResourceDispatcherHostImpl::ClearLoginDelegateForRequest(
563 net::URLRequest* request) {
564 ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
566 ResourceLoader* loader = GetLoader(info->GetGlobalRequestID());
568 loader->ClearLoginDelegate();
572 void ResourceDispatcherHostImpl::Shutdown() {
573 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
574 BrowserThread::PostTask(BrowserThread::IO,
576 base::Bind(&ResourceDispatcherHostImpl::OnShutdown,
577 base::Unretained(this)));
580 scoped_ptr<ResourceHandler>
581 ResourceDispatcherHostImpl::CreateResourceHandlerForDownload(
582 net::URLRequest* request,
583 bool is_content_initiated,
586 scoped_ptr<DownloadSaveInfo> save_info,
587 const DownloadUrlParameters::OnStartedCallback& started_cb) {
588 scoped_ptr<ResourceHandler> handler(
589 new DownloadResourceHandler(id, request, started_cb, save_info.Pass()));
591 const ResourceRequestInfo* request_info(
592 ResourceRequestInfo::ForRequest(request));
594 ScopedVector<ResourceThrottle> throttles;
595 delegate_->DownloadStarting(
596 request, request_info->GetContext(), request_info->GetChildID(),
597 request_info->GetRouteID(), request_info->GetRequestID(),
598 is_content_initiated, must_download, &throttles);
599 if (!throttles.empty()) {
601 new ThrottlingResourceHandler(
602 handler.Pass(), request, throttles.Pass()));
605 return handler.Pass();
608 scoped_ptr<ResourceHandler>
609 ResourceDispatcherHostImpl::MaybeInterceptAsStream(net::URLRequest* request,
610 ResourceResponse* response) {
611 ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
612 const std::string& mime_type = response->head.mime_type;
615 std::string target_id;
617 !delegate_->ShouldInterceptResourceAsStream(info->GetContext(),
622 return scoped_ptr<ResourceHandler>();
625 StreamContext* stream_context =
626 GetStreamContextForResourceContext(info->GetContext());
628 scoped_ptr<StreamResourceHandler> handler(
629 new StreamResourceHandler(request,
630 stream_context->registry(),
633 info->set_is_stream(true);
634 delegate_->OnStreamCreated(
639 handler->stream()->CreateHandle(request->url(), mime_type),
640 request->GetExpectedContentSize());
641 return handler.PassAs<ResourceHandler>();
644 void ResourceDispatcherHostImpl::ClearSSLClientAuthHandlerForRequest(
645 net::URLRequest* request) {
646 ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
648 ResourceLoader* loader = GetLoader(info->GetGlobalRequestID());
650 loader->ClearSSLClientAuthHandler();
654 ResourceDispatcherHostLoginDelegate*
655 ResourceDispatcherHostImpl::CreateLoginDelegate(
656 ResourceLoader* loader,
657 net::AuthChallengeInfo* auth_info) {
661 return delegate_->CreateLoginDelegate(auth_info, loader->request());
664 bool ResourceDispatcherHostImpl::HandleExternalProtocol(ResourceLoader* loader,
669 ResourceRequestInfoImpl* info = loader->GetRequestInfo();
671 if (!ResourceType::IsFrame(info->GetResourceType()))
674 const net::URLRequestJobFactory* job_factory =
675 info->GetContext()->GetRequestContext()->job_factory();
676 if (job_factory->IsHandledURL(url))
679 return delegate_->HandleExternalProtocol(url, info->GetChildID(),
683 void ResourceDispatcherHostImpl::DidStartRequest(ResourceLoader* loader) {
684 // Make sure we have the load state monitor running
685 if (!update_load_states_timer_->IsRunning()) {
686 update_load_states_timer_->Start(FROM_HERE,
687 TimeDelta::FromMilliseconds(kUpdateLoadStatesIntervalMsec),
688 this, &ResourceDispatcherHostImpl::UpdateLoadStates);
692 void ResourceDispatcherHostImpl::DidReceiveRedirect(ResourceLoader* loader,
693 const GURL& new_url) {
694 ResourceRequestInfoImpl* info = loader->GetRequestInfo();
696 int render_process_id, render_frame_host;
697 if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_host))
700 // Notify the observers on the UI thread.
701 scoped_ptr<ResourceRedirectDetails> detail(new ResourceRedirectDetails(
703 GetCertID(loader->request(), info->GetChildID()),
705 BrowserThread::PostTask(
706 BrowserThread::UI, FROM_HERE,
709 render_process_id, render_frame_host, base::Passed(&detail)));
712 void ResourceDispatcherHostImpl::DidReceiveResponse(ResourceLoader* loader) {
713 ResourceRequestInfoImpl* info = loader->GetRequestInfo();
715 if (loader->request()->was_fetched_via_proxy() &&
716 loader->request()->was_fetched_via_spdy() &&
717 loader->request()->url().SchemeIs("http")) {
718 scheduler_->OnReceivedSpdyProxiedHttpResponse(
719 info->GetChildID(), info->GetRouteID());
722 // There should be an entry in the map created when we dispatched the
723 // request unless it's been detached and the renderer has died.
724 OfflineMap::iterator policy_it(
725 offline_policy_map_.find(info->GetGlobalRoutingID()));
726 if (offline_policy_map_.end() != policy_it) {
727 policy_it->second->UpdateStateForSuccessfullyStartedRequest(
728 loader->request()->response_info());
730 // Unless detached, we should have an entry in offline_policy_map_ from
731 // when this request traversed Begin{Download,SaveFile,Request}.
732 // TODO(rdsmith): This isn't currently true; see http://crbug.com/241176.
733 DCHECK(info->detachable_handler() &&
734 info->detachable_handler()->is_detached());
737 int render_process_id, render_frame_host;
738 if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_host))
741 // Notify the observers on the UI thread.
742 scoped_ptr<ResourceRequestDetails> detail(new ResourceRequestDetails(
744 GetCertID(loader->request(), info->GetChildID())));
745 BrowserThread::PostTask(
746 BrowserThread::UI, FROM_HERE,
749 render_process_id, render_frame_host, base::Passed(&detail)));
752 void ResourceDispatcherHostImpl::DidFinishLoading(ResourceLoader* loader) {
753 ResourceRequestInfo* info = loader->GetRequestInfo();
755 // Record final result of all resource loads.
756 if (info->GetResourceType() == ResourceType::MAIN_FRAME) {
757 // This enumeration has "3" appended to its name to distinguish it from
759 UMA_HISTOGRAM_SPARSE_SLOWLY(
760 "Net.ErrorCodesForMainFrame3",
761 -loader->request()->status().error());
763 if (loader->request()->url().SchemeIsSecure()) {
764 if (loader->request()->url().host() == "www.google.com") {
765 UMA_HISTOGRAM_SPARSE_SLOWLY("Net.ErrorCodesForHTTPSGoogleMainFrame2",
766 -loader->request()->status().error());
769 int num_valid_scts = std::count_if(
770 loader->request()->ssl_info().signed_certificate_timestamps.begin(),
771 loader->request()->ssl_info().signed_certificate_timestamps.end(),
773 UMA_HISTOGRAM_COUNTS_100(
774 "Net.CertificateTransparency.MainFrameValidSCTCount", num_valid_scts);
777 if (info->GetResourceType() == ResourceType::IMAGE) {
778 UMA_HISTOGRAM_SPARSE_SLOWLY(
779 "Net.ErrorCodesForImages",
780 -loader->request()->status().error());
782 // This enumeration has "2" appended to distinguish it from older versions.
783 UMA_HISTOGRAM_SPARSE_SLOWLY(
784 "Net.ErrorCodesForSubresources2",
785 -loader->request()->status().error());
789 delegate_->RequestComplete(loader->request());
791 // Destroy the ResourceLoader.
792 RemovePendingRequest(info->GetChildID(), info->GetRequestID());
795 void ResourceDispatcherHostImpl::OnInit() {
796 scheduler_.reset(new ResourceScheduler);
797 appcache::AppCacheInterceptor::EnsureRegistered();
800 void ResourceDispatcherHostImpl::OnShutdown() {
801 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
804 pending_loaders_.clear();
806 // Make sure we shutdown the timer now, otherwise by the time our destructor
807 // runs if the timer is still running the Task is deleted twice (once by
808 // the MessageLoop and the second time by RepeatingTimer).
809 update_load_states_timer_.reset();
811 // Clear blocked requests if any left.
812 // Note that we have to do this in 2 passes as we cannot call
813 // CancelBlockedRequestsForRoute while iterating over
814 // blocked_loaders_map_, as it modifies it.
815 std::set<GlobalRoutingID> ids;
816 for (BlockedLoadersMap::const_iterator iter = blocked_loaders_map_.begin();
817 iter != blocked_loaders_map_.end(); ++iter) {
818 std::pair<std::set<GlobalRoutingID>::iterator, bool> result =
819 ids.insert(iter->first);
820 // We should not have duplicates.
821 DCHECK(result.second);
823 for (std::set<GlobalRoutingID>::const_iterator iter = ids.begin();
824 iter != ids.end(); ++iter) {
825 CancelBlockedRequestsForRoute(iter->child_id, iter->route_id);
831 bool ResourceDispatcherHostImpl::OnMessageReceived(
832 const IPC::Message& message,
833 ResourceMessageFilter* filter,
834 bool* message_was_ok) {
837 IPC_BEGIN_MESSAGE_MAP_EX(ResourceDispatcherHostImpl, message, *message_was_ok)
838 IPC_MESSAGE_HANDLER(ResourceHostMsg_RequestResource, OnRequestResource)
839 IPC_MESSAGE_HANDLER_DELAY_REPLY(ResourceHostMsg_SyncLoad, OnSyncLoad)
840 IPC_MESSAGE_HANDLER(ResourceHostMsg_ReleaseDownloadedFile,
841 OnReleaseDownloadedFile)
842 IPC_MESSAGE_HANDLER(ResourceHostMsg_DataDownloaded_ACK, OnDataDownloadedACK)
843 IPC_MESSAGE_HANDLER(ResourceHostMsg_UploadProgress_ACK, OnUploadProgressACK)
844 IPC_MESSAGE_HANDLER(ResourceHostMsg_CancelRequest, OnCancelRequest)
845 IPC_MESSAGE_UNHANDLED(handled = false)
846 IPC_END_MESSAGE_MAP_EX()
848 if (!handled && IPC_MESSAGE_ID_CLASS(message.type()) == ResourceMsgStart) {
849 PickleIterator iter(message);
851 bool ok = iter.ReadInt(&request_id);
853 GlobalRequestID id(filter_->child_id(), request_id);
854 DelegateMap::iterator it = delegate_map_.find(id);
855 if (it != delegate_map_.end()) {
856 ObserverList<ResourceMessageDelegate>::Iterator del_it(*it->second);
857 ResourceMessageDelegate* delegate;
858 while (!handled && (delegate = del_it.GetNext()) != NULL) {
859 handled = delegate->OnMessageReceived(message, message_was_ok);
868 void ResourceDispatcherHostImpl::OnRequestResource(
869 const IPC::Message& message,
871 const ResourceHostMsg_Request& request_data) {
872 BeginRequest(request_id, request_data, NULL, message.routing_id());
875 // Begins a resource request with the given params on behalf of the specified
876 // child process. Responses will be dispatched through the given receiver. The
877 // process ID is used to lookup WebContentsImpl from routing_id's in the case of
878 // a request from a renderer. request_context is the cookie/cache context to be
879 // used for this request.
881 // If sync_result is non-null, then a SyncLoad reply will be generated, else
882 // a normal asynchronous set of response messages will be generated.
883 void ResourceDispatcherHostImpl::OnSyncLoad(
885 const ResourceHostMsg_Request& request_data,
886 IPC::Message* sync_result) {
887 BeginRequest(request_id, request_data, sync_result,
888 sync_result->routing_id());
891 void ResourceDispatcherHostImpl::UpdateRequestForTransfer(
895 const ResourceHostMsg_Request& request_data,
896 const linked_ptr<ResourceLoader>& loader) {
897 ResourceRequestInfoImpl* info = loader->GetRequestInfo();
898 GlobalRoutingID old_routing_id(
899 request_data.transferred_request_child_id, info->GetRouteID());
900 GlobalRequestID old_request_id(request_data.transferred_request_child_id,
901 request_data.transferred_request_request_id);
902 GlobalRoutingID new_routing_id(child_id, route_id);
903 GlobalRequestID new_request_id(child_id, request_id);
905 // Clear out data that depends on |info| before updating it.
906 IncrementOutstandingRequestsMemory(-1, *info);
907 OustandingRequestsStats empty_stats = { 0, 0 };
908 OustandingRequestsStats old_stats = GetOutstandingRequestsStats(*info);
909 UpdateOutstandingRequestsStats(*info, empty_stats);
910 pending_loaders_.erase(old_request_id);
912 // ResourceHandlers should always get state related to the request from the
913 // ResourceRequestInfo rather than caching it locally. This lets us update
914 // the info object when a transfer occurs.
915 info->UpdateForTransfer(child_id, route_id, request_data.origin_pid,
916 request_id, request_data.frame_id,
917 request_data.parent_frame_id, filter_->GetWeakPtr());
919 // Update maps that used the old IDs, if necessary. Some transfers in tests
920 // do not actually use a different ID, so not all maps need to be updated.
921 pending_loaders_[new_request_id] = loader;
922 UpdateOutstandingRequestsStats(*info, old_stats);
923 IncrementOutstandingRequestsMemory(1, *info);
924 if (old_routing_id != new_routing_id) {
925 if (offline_policy_map_.find(old_routing_id) != offline_policy_map_.end()) {
926 if (offline_policy_map_.find(new_routing_id) !=
927 offline_policy_map_.end())
928 delete offline_policy_map_[new_routing_id];
929 offline_policy_map_[new_routing_id] = offline_policy_map_[old_routing_id];
930 offline_policy_map_.erase(old_routing_id);
932 if (blocked_loaders_map_.find(old_routing_id) !=
933 blocked_loaders_map_.end()) {
934 blocked_loaders_map_[new_routing_id] =
935 blocked_loaders_map_[old_routing_id];
936 blocked_loaders_map_.erase(old_routing_id);
939 if (old_request_id != new_request_id) {
940 DelegateMap::iterator it = delegate_map_.find(old_request_id);
941 if (it != delegate_map_.end()) {
942 // Tell each delegate that the request ID has changed.
943 ObserverList<ResourceMessageDelegate>::Iterator del_it(*it->second);
944 ResourceMessageDelegate* delegate;
945 while ((delegate = del_it.GetNext()) != NULL) {
946 delegate->set_request_id(new_request_id);
948 // Now store the observer list under the new request ID.
949 delegate_map_[new_request_id] = delegate_map_[old_request_id];
950 delegate_map_.erase(old_request_id);
954 appcache::AppCacheInterceptor::CompleteCrossSiteTransfer(
957 request_data.appcache_host_id);
959 // We should have a CrossSiteResourceHandler to finish the transfer.
960 DCHECK(info->cross_site_handler());
963 void ResourceDispatcherHostImpl::BeginRequest(
965 const ResourceHostMsg_Request& request_data,
966 IPC::Message* sync_result, // only valid for sync
968 int process_type = filter_->process_type();
969 int child_id = filter_->child_id();
971 // Reject invalid priority.
972 if (request_data.priority < net::MINIMUM_PRIORITY ||
973 request_data.priority > net::MAXIMUM_PRIORITY) {
974 RecordAction(base::UserMetricsAction("BadMessageTerminate_RDH"));
975 filter_->BadMessageReceived();
979 // If we crash here, figure out what URL the renderer was requesting.
980 // http://crbug.com/91398
982 base::strlcpy(url_buf, request_data.url.spec().c_str(), arraysize(url_buf));
983 base::debug::Alias(url_buf);
985 // If the request that's coming in is being transferred from another process,
986 // we want to reuse and resume the old loader rather than start a new one.
987 linked_ptr<ResourceLoader> deferred_loader;
989 LoaderMap::iterator it = pending_loaders_.find(
990 GlobalRequestID(request_data.transferred_request_child_id,
991 request_data.transferred_request_request_id));
992 if (it != pending_loaders_.end()) {
993 // If the request is transferring to a new process, we can update our
994 // state and let it resume with its existing ResourceHandlers.
995 if (it->second->is_transferring()) {
996 deferred_loader = it->second;
997 UpdateRequestForTransfer(child_id, route_id, request_id,
998 request_data, deferred_loader);
1000 deferred_loader->CompleteTransfer();
1002 RecordAction(base::UserMetricsAction("BadMessageTerminate_RDH"));
1003 filter_->BadMessageReceived();
1009 ResourceContext* resource_context = NULL;
1010 net::URLRequestContext* request_context = NULL;
1011 filter_->GetContexts(request_data, &resource_context, &request_context);
1012 // http://crbug.com/90971
1013 CHECK(ContainsKey(active_resource_contexts_, resource_context));
1016 !ShouldServiceRequest(process_type, child_id, request_data,
1017 filter_->file_system_context())) {
1018 AbortRequestBeforeItStarts(filter_, sync_result, request_id);
1022 const Referrer referrer(request_data.referrer, request_data.referrer_policy);
1024 // Allow the observer to block/handle the request.
1025 if (delegate_ && !delegate_->ShouldBeginRequest(child_id,
1027 request_data.method,
1029 request_data.resource_type,
1030 resource_context)) {
1031 AbortRequestBeforeItStarts(filter_, sync_result, request_id);
1035 bool is_sync_load = sync_result != NULL;
1037 BuildLoadFlagsForRequest(request_data, child_id, is_sync_load);
1039 GlobalRoutingID id(child_id, route_id);
1040 if (!offline_policy_map_[id])
1041 offline_policy_map_[id] = new OfflinePolicy();
1042 load_flags |= offline_policy_map_[id]->GetAdditionalLoadFlags(
1043 load_flags, request_data.resource_type == ResourceType::MAIN_FRAME);
1045 // Sync loads should have maximum priority and should be the only
1046 // requets that have the ignore limits flag set.
1048 DCHECK_EQ(request_data.priority, net::MAXIMUM_PRIORITY);
1049 DCHECK_NE(load_flags & net::LOAD_IGNORE_LIMITS, 0);
1051 DCHECK_EQ(load_flags & net::LOAD_IGNORE_LIMITS, 0);
1054 // Construct the request.
1055 scoped_ptr<net::URLRequest> new_request;
1056 net::URLRequest* request;
1057 new_request = request_context->CreateRequest(
1058 request_data.url, request_data.priority, NULL);
1059 request = new_request.get();
1061 request->set_method(request_data.method);
1062 request->set_first_party_for_cookies(request_data.first_party_for_cookies);
1063 SetReferrerForRequest(request, referrer);
1065 net::HttpRequestHeaders headers;
1066 headers.AddHeadersFromString(request_data.headers);
1067 request->SetExtraRequestHeaders(headers);
1069 request->SetLoadFlags(load_flags);
1071 // Resolve elements from request_body and prepare upload data.
1072 if (request_data.request_body.get()) {
1073 webkit_blob::BlobStorageContext* blob_context = NULL;
1074 if (filter_->blob_storage_context())
1075 blob_context = filter_->blob_storage_context()->context();
1076 request->set_upload(UploadDataStreamBuilder::Build(
1077 request_data.request_body.get(),
1079 filter_->file_system_context(),
1080 BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE)
1084 bool allow_download = request_data.allow_download &&
1085 ResourceType::IsFrame(request_data.resource_type);
1087 // Make extra info and read footer (contains request ID).
1088 ResourceRequestInfoImpl* extra_info =
1089 new ResourceRequestInfoImpl(
1093 request_data.origin_pid,
1095 request_data.render_frame_id,
1096 request_data.is_main_frame,
1097 request_data.frame_id,
1098 request_data.parent_is_main_frame,
1099 request_data.parent_frame_id,
1100 request_data.resource_type,
1101 request_data.transition_type,
1102 request_data.should_replace_current_entry,
1103 false, // is download
1106 request_data.has_user_gesture,
1107 request_data.referrer_policy,
1108 request_data.visiblity_state,
1110 filter_->GetWeakPtr(),
1112 extra_info->AssociateWithRequest(request); // Request takes ownership.
1114 if (request->url().SchemeIs(chrome::kBlobScheme)) {
1115 // Hang on to a reference to ensure the blob is not released prior
1116 // to the job being started.
1117 webkit_blob::BlobProtocolHandler::SetRequestedBlobDataHandle(
1119 filter_->blob_storage_context()->context()->
1120 GetBlobDataFromPublicURL(request->url()));
1123 // Have the appcache associate its extra info with the request.
1124 appcache::AppCacheInterceptor::SetExtraRequestInfo(
1125 request, filter_->appcache_service(), child_id,
1126 request_data.appcache_host_id, request_data.resource_type);
1128 scoped_ptr<ResourceHandler> handler(
1129 CreateResourceHandler(
1131 request_data, sync_result, route_id, process_type, child_id,
1134 BeginRequestInternal(new_request.Pass(), handler.Pass());
1137 scoped_ptr<ResourceHandler> ResourceDispatcherHostImpl::CreateResourceHandler(
1138 net::URLRequest* request,
1139 const ResourceHostMsg_Request& request_data,
1140 IPC::Message* sync_result,
1144 ResourceContext* resource_context) {
1145 // Construct the IPC resource handler.
1146 scoped_ptr<ResourceHandler> handler;
1148 handler.reset(new SyncResourceHandler(request, sync_result, this));
1150 handler.reset(new AsyncResourceHandler(request, this));
1151 if (IsDetachableResourceType(request_data.resource_type)) {
1152 handler.reset(new DetachableResourceHandler(
1154 base::TimeDelta::FromMilliseconds(kDefaultDetachableCancelDelayMs),
1159 // The RedirectToFileResourceHandler depends on being next in the chain.
1160 if (request_data.download_to_file) {
1162 new RedirectToFileResourceHandler(handler.Pass(), request, this));
1165 // Install a CrossSiteResourceHandler for all main frame requests. This will
1166 // let us check whether a transfer is required and pause for the unload
1167 // handler either if so or if a cross-process navigation is already under way.
1168 bool is_swappable_navigation =
1169 request_data.resource_type == ResourceType::MAIN_FRAME;
1170 // If we are using --site-per-process, install it for subframes as well.
1171 if (!is_swappable_navigation &&
1172 CommandLine::ForCurrentProcess()->HasSwitch(switches::kSitePerProcess)) {
1173 is_swappable_navigation =
1174 request_data.resource_type == ResourceType::SUB_FRAME;
1176 if (is_swappable_navigation && process_type == PROCESS_TYPE_RENDERER)
1177 handler.reset(new CrossSiteResourceHandler(handler.Pass(), request));
1179 // Insert a buffered event handler before the actual one.
1181 new BufferedResourceHandler(handler.Pass(), this, request));
1183 ScopedVector<ResourceThrottle> throttles;
1185 delegate_->RequestBeginning(request,
1187 filter_->appcache_service(),
1188 request_data.resource_type,
1194 if (request->has_upload()) {
1195 // Block power save while uploading data.
1196 throttles.push_back(new PowerSaveBlockResourceThrottle());
1199 throttles.push_back(
1200 scheduler_->ScheduleRequest(child_id, route_id, request).release());
1203 new ThrottlingResourceHandler(handler.Pass(), request, throttles.Pass()));
1205 return handler.Pass();
1208 void ResourceDispatcherHostImpl::OnReleaseDownloadedFile(int request_id) {
1209 UnregisterDownloadedTempFile(filter_->child_id(), request_id);
1212 void ResourceDispatcherHostImpl::OnDataDownloadedACK(int request_id) {
1213 // TODO(michaeln): maybe throttle DataDownloaded messages
1216 void ResourceDispatcherHostImpl::RegisterDownloadedTempFile(
1217 int child_id, int request_id, ShareableFileReference* reference) {
1218 registered_temp_files_[child_id][request_id] = reference;
1219 ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
1220 child_id, reference->path());
1222 // When the temp file is deleted, revoke permissions that the renderer has
1223 // to that file. This covers an edge case where the file is deleted and then
1224 // the same name is re-used for some other purpose, we don't want the old
1225 // renderer to still have access to it.
1227 // We do this when the file is deleted because the renderer can take a blob
1228 // reference to the temp file that outlives the url loaded that it was
1229 // loaded with to keep the file (and permissions) alive.
1230 reference->AddFinalReleaseCallback(
1231 base::Bind(&RemoveDownloadFileFromChildSecurityPolicy,
1235 void ResourceDispatcherHostImpl::UnregisterDownloadedTempFile(
1236 int child_id, int request_id) {
1237 DeletableFilesMap& map = registered_temp_files_[child_id];
1238 DeletableFilesMap::iterator found = map.find(request_id);
1239 if (found == map.end())
1244 // Note that we don't remove the security bits here. This will be done
1245 // when all file refs are deleted (see RegisterDownloadedTempFile).
1248 bool ResourceDispatcherHostImpl::Send(IPC::Message* message) {
1253 void ResourceDispatcherHostImpl::OnUploadProgressACK(int request_id) {
1254 ResourceLoader* loader = GetLoader(filter_->child_id(), request_id);
1256 loader->OnUploadProgressACK();
1259 // Note that this cancel is subtly different from the other
1260 // CancelRequest methods in this file, which also tear down the loader.
1261 void ResourceDispatcherHostImpl::OnCancelRequest(int request_id) {
1262 int child_id = filter_->child_id();
1264 // When the old renderer dies, it sends a message to us to cancel its
1266 if (IsTransferredNavigation(GlobalRequestID(child_id, request_id)))
1269 ResourceLoader* loader = GetLoader(child_id, request_id);
1271 // We probably want to remove this warning eventually, but I wanted to be
1272 // able to notice when this happens during initial development since it
1273 // should be rare and may indicate a bug.
1274 DVLOG(1) << "Canceling a request that wasn't found";
1278 loader->CancelRequest(true);
1281 ResourceRequestInfoImpl* ResourceDispatcherHostImpl::CreateRequestInfo(
1285 ResourceContext* context) {
1286 return new ResourceRequestInfoImpl(
1287 PROCESS_TYPE_RENDERER,
1292 MSG_ROUTING_NONE, // render_frame_id
1293 false, // is_main_frame
1295 false, // parent_is_main_frame
1296 -1, // parent_frame_id
1297 ResourceType::SUB_RESOURCE,
1298 PAGE_TRANSITION_LINK,
1299 false, // should_replace_current_entry
1300 download, // is_download
1302 download, // allow_download
1303 false, // has_user_gesture
1304 blink::WebReferrerPolicyDefault,
1305 blink::WebPageVisibilityStateVisible,
1307 base::WeakPtr<ResourceMessageFilter>(), // filter
1311 void ResourceDispatcherHostImpl::OnRenderViewHostCreated(
1314 scheduler_->OnClientCreated(child_id, route_id);
1317 void ResourceDispatcherHostImpl::OnRenderViewHostDeleted(
1320 scheduler_->OnClientDeleted(child_id, route_id);
1321 CancelRequestsForRoute(child_id, route_id);
1324 // This function is only used for saving feature.
1325 void ResourceDispatcherHostImpl::BeginSaveFile(
1327 const Referrer& referrer,
1330 ResourceContext* context) {
1334 // http://crbug.com/90971
1336 base::strlcpy(url_buf, url.spec().c_str(), arraysize(url_buf));
1337 base::debug::Alias(url_buf);
1338 CHECK(ContainsKey(active_resource_contexts_, context));
1340 scoped_ptr<ResourceHandler> handler(
1341 new SaveFileResourceHandler(child_id,
1344 save_file_manager_.get()));
1347 const net::URLRequestContext* request_context = context->GetRequestContext();
1349 request_context->job_factory()->IsHandledURL(url);
1351 // Since any URLs which have non-standard scheme have been filtered
1352 // by save manager(see GURL::SchemeIsStandard). This situation
1353 // should not happen.
1358 scoped_ptr<net::URLRequest> request(
1359 request_context->CreateRequest(url, net::DEFAULT_PRIORITY, NULL));
1360 request->set_method("GET");
1361 SetReferrerForRequest(request.get(), referrer);
1363 // So far, for saving page, we need fetch content from cache, in the
1364 // future, maybe we can use a configuration to configure this behavior.
1365 request->SetLoadFlags(net::LOAD_PREFERRING_CACHE);
1367 // No need to get offline load flags for save files, but make sure
1368 // we have an OfflinePolicy to receive request completions.
1369 GlobalRoutingID id(child_id, route_id);
1370 if (!offline_policy_map_[id])
1371 offline_policy_map_[id] = new OfflinePolicy();
1373 // Since we're just saving some resources we need, disallow downloading.
1374 ResourceRequestInfoImpl* extra_info =
1375 CreateRequestInfo(child_id, route_id, false, context);
1376 extra_info->AssociateWithRequest(request.get()); // Request takes ownership.
1378 BeginRequestInternal(request.Pass(), handler.Pass());
1381 void ResourceDispatcherHostImpl::MarkAsTransferredNavigation(
1382 const GlobalRequestID& id) {
1383 GetLoader(id)->MarkAsTransferring();
1386 void ResourceDispatcherHostImpl::CancelTransferringNavigation(
1387 const GlobalRequestID& id) {
1388 // Request should still exist and be in the middle of a transfer.
1389 DCHECK(IsTransferredNavigation(id));
1390 RemovePendingRequest(id.child_id, id.request_id);
1393 void ResourceDispatcherHostImpl::ResumeDeferredNavigation(
1394 const GlobalRequestID& id) {
1395 ResourceLoader* loader = GetLoader(id);
1397 // The response we were meant to resume could have already been canceled.
1398 ResourceRequestInfoImpl* info = loader->GetRequestInfo();
1399 if (info->cross_site_handler())
1400 info->cross_site_handler()->ResumeResponse();
1404 // The object died, so cancel and detach all requests associated with it except
1405 // for downloads and detachable resources, which belong to the browser process
1406 // even if initiated via a renderer.
1407 void ResourceDispatcherHostImpl::CancelRequestsForProcess(int child_id) {
1408 CancelRequestsForRoute(child_id, -1 /* cancel all */);
1409 registered_temp_files_.erase(child_id);
1412 void ResourceDispatcherHostImpl::CancelRequestsForRoute(int child_id,
1414 // Since pending_requests_ is a map, we first build up a list of all of the
1415 // matching requests to be cancelled, and then we cancel them. Since there
1416 // may be more than one request to cancel, we cannot simply hold onto the map
1417 // iterators found in the first loop.
1419 // Find the global ID of all matching elements.
1420 bool any_requests_transferring = false;
1421 std::vector<GlobalRequestID> matching_requests;
1422 for (LoaderMap::const_iterator i = pending_loaders_.begin();
1423 i != pending_loaders_.end(); ++i) {
1424 if (i->first.child_id != child_id)
1427 ResourceRequestInfoImpl* info = i->second->GetRequestInfo();
1429 GlobalRequestID id(child_id, i->first.request_id);
1430 DCHECK(id == i->first);
1431 // Don't cancel navigations that are expected to live beyond this process.
1432 if (IsTransferredNavigation(id))
1433 any_requests_transferring = true;
1434 if (info->detachable_handler()) {
1435 info->detachable_handler()->Detach();
1436 } else if (!info->IsDownload() && !info->is_stream() &&
1437 !IsTransferredNavigation(id) &&
1438 (route_id == -1 || route_id == info->GetRouteID())) {
1439 matching_requests.push_back(id);
1444 for (size_t i = 0; i < matching_requests.size(); ++i) {
1445 LoaderMap::iterator iter = pending_loaders_.find(matching_requests[i]);
1446 // Although every matching request was in pending_requests_ when we built
1447 // matching_requests, it is normal for a matching request to be not found
1448 // in pending_requests_ after we have removed some matching requests from
1449 // pending_requests_. For example, deleting a net::URLRequest that has
1450 // exclusive (write) access to an HTTP cache entry may unblock another
1451 // net::URLRequest that needs exclusive access to the same cache entry, and
1452 // that net::URLRequest may complete and remove itself from
1453 // pending_requests_. So we need to check that iter is not equal to
1454 // pending_requests_.end().
1455 if (iter != pending_loaders_.end())
1456 RemovePendingLoader(iter);
1459 // Don't clear the blocked loaders or offline policy maps if any of the
1460 // requests in route_id are being transferred to a new process, since those
1461 // maps will be updated with the new route_id after the transfer. Otherwise
1462 // we will lose track of this info when the old route goes away, before the
1463 // new one is created.
1464 if (any_requests_transferring)
1467 // Now deal with blocked requests if any.
1468 if (route_id != -1) {
1469 if (blocked_loaders_map_.find(GlobalRoutingID(child_id, route_id)) !=
1470 blocked_loaders_map_.end()) {
1471 CancelBlockedRequestsForRoute(child_id, route_id);
1474 // We have to do all render views for the process |child_id|.
1475 // Note that we have to do this in 2 passes as we cannot call
1476 // CancelBlockedRequestsForRoute while iterating over
1477 // blocked_loaders_map_, as it modifies it.
1478 std::set<int> route_ids;
1479 for (BlockedLoadersMap::const_iterator iter = blocked_loaders_map_.begin();
1480 iter != blocked_loaders_map_.end(); ++iter) {
1481 if (iter->first.child_id == child_id)
1482 route_ids.insert(iter->first.route_id);
1484 for (std::set<int>::const_iterator iter = route_ids.begin();
1485 iter != route_ids.end(); ++iter) {
1486 CancelBlockedRequestsForRoute(child_id, *iter);
1490 // Cleanup the offline state for the route.
1491 if (-1 != route_id) {
1492 OfflineMap::iterator it = offline_policy_map_.find(
1493 GlobalRoutingID(child_id, route_id));
1494 if (offline_policy_map_.end() != it) {
1496 offline_policy_map_.erase(it);
1499 for (OfflineMap::iterator it = offline_policy_map_.begin();
1500 offline_policy_map_.end() != it;) {
1501 // Increment iterator so deletion doesn't invalidate it.
1502 OfflineMap::iterator current_it = it++;
1504 if (child_id == current_it->first.child_id) {
1505 delete current_it->second;
1506 offline_policy_map_.erase(current_it);
1512 // Cancels the request and removes it from the list.
1513 void ResourceDispatcherHostImpl::RemovePendingRequest(int child_id,
1515 LoaderMap::iterator i = pending_loaders_.find(
1516 GlobalRequestID(child_id, request_id));
1517 if (i == pending_loaders_.end()) {
1518 NOTREACHED() << "Trying to remove a request that's not here";
1521 RemovePendingLoader(i);
1524 void ResourceDispatcherHostImpl::RemovePendingLoader(
1525 const LoaderMap::iterator& iter) {
1526 ResourceRequestInfoImpl* info = iter->second->GetRequestInfo();
1528 // Remove the memory credit that we added when pushing the request onto
1529 // the pending list.
1530 IncrementOutstandingRequestsMemory(-1, *info);
1532 pending_loaders_.erase(iter);
1534 // If we have no more pending requests, then stop the load state monitor
1535 if (pending_loaders_.empty() && update_load_states_timer_)
1536 update_load_states_timer_->Stop();
1539 void ResourceDispatcherHostImpl::CancelRequest(int child_id,
1541 ResourceLoader* loader = GetLoader(child_id, request_id);
1543 // We probably want to remove this warning eventually, but I wanted to be
1544 // able to notice when this happens during initial development since it
1545 // should be rare and may indicate a bug.
1546 DVLOG(1) << "Canceling a request that wasn't found";
1550 RemovePendingRequest(child_id, request_id);
1553 ResourceDispatcherHostImpl::OustandingRequestsStats
1554 ResourceDispatcherHostImpl::GetOutstandingRequestsStats(
1555 const ResourceRequestInfoImpl& info) {
1556 OutstandingRequestsStatsMap::iterator entry =
1557 outstanding_requests_stats_map_.find(info.GetChildID());
1558 OustandingRequestsStats stats = { 0, 0 };
1559 if (entry != outstanding_requests_stats_map_.end())
1560 stats = entry->second;
1564 void ResourceDispatcherHostImpl::UpdateOutstandingRequestsStats(
1565 const ResourceRequestInfoImpl& info,
1566 const OustandingRequestsStats& stats) {
1567 if (stats.memory_cost == 0 && stats.num_requests == 0)
1568 outstanding_requests_stats_map_.erase(info.GetChildID());
1570 outstanding_requests_stats_map_[info.GetChildID()] = stats;
1573 ResourceDispatcherHostImpl::OustandingRequestsStats
1574 ResourceDispatcherHostImpl::IncrementOutstandingRequestsMemory(
1576 const ResourceRequestInfoImpl& info) {
1577 DCHECK_EQ(1, abs(count));
1579 // Retrieve the previous value (defaulting to 0 if not found).
1580 OustandingRequestsStats stats = GetOutstandingRequestsStats(info);
1582 // Insert/update the total; delete entries when their count reaches 0.
1583 stats.memory_cost += count * info.memory_cost();
1584 DCHECK_GE(stats.memory_cost, 0);
1585 UpdateOutstandingRequestsStats(info, stats);
1590 ResourceDispatcherHostImpl::OustandingRequestsStats
1591 ResourceDispatcherHostImpl::IncrementOutstandingRequestsCount(
1593 const ResourceRequestInfoImpl& info) {
1594 DCHECK_EQ(1, abs(count));
1595 num_in_flight_requests_ += count;
1597 OustandingRequestsStats stats = GetOutstandingRequestsStats(info);
1598 stats.num_requests += count;
1599 DCHECK_GE(stats.num_requests, 0);
1600 UpdateOutstandingRequestsStats(info, stats);
1605 bool ResourceDispatcherHostImpl::HasSufficientResourcesForRequest(
1606 const net::URLRequest* request_) {
1607 const ResourceRequestInfoImpl* info =
1608 ResourceRequestInfoImpl::ForRequest(request_);
1609 OustandingRequestsStats stats = IncrementOutstandingRequestsCount(1, *info);
1611 if (stats.num_requests > max_num_in_flight_requests_per_process_)
1613 if (num_in_flight_requests_ > max_num_in_flight_requests_)
1619 void ResourceDispatcherHostImpl::FinishedWithResourcesForRequest(
1620 const net::URLRequest* request_) {
1621 const ResourceRequestInfoImpl* info =
1622 ResourceRequestInfoImpl::ForRequest(request_);
1623 IncrementOutstandingRequestsCount(-1, *info);
1627 int ResourceDispatcherHostImpl::CalculateApproximateMemoryCost(
1628 net::URLRequest* request) {
1629 // The following fields should be a minor size contribution (experimentally
1630 // on the order of 100). However since they are variable length, it could
1631 // in theory be a sizeable contribution.
1632 int strings_cost = request->extra_request_headers().ToString().size() +
1633 request->original_url().spec().size() +
1634 request->referrer().size() +
1635 request->method().size();
1637 // Note that this expression will typically be dominated by:
1638 // |kAvgBytesPerOutstandingRequest|.
1639 return kAvgBytesPerOutstandingRequest + strings_cost;
1642 void ResourceDispatcherHostImpl::BeginRequestInternal(
1643 scoped_ptr<net::URLRequest> request,
1644 scoped_ptr<ResourceHandler> handler) {
1645 DCHECK(!request->is_pending());
1646 ResourceRequestInfoImpl* info =
1647 ResourceRequestInfoImpl::ForRequest(request.get());
1649 if ((TimeTicks::Now() - last_user_gesture_time_) <
1650 TimeDelta::FromMilliseconds(kUserGestureWindowMs)) {
1651 request->SetLoadFlags(
1652 request->load_flags() | net::LOAD_MAYBE_USER_GESTURE);
1655 // Add the memory estimate that starting this request will consume.
1656 info->set_memory_cost(CalculateApproximateMemoryCost(request.get()));
1658 // If enqueing/starting this request will exceed our per-process memory
1659 // bound, abort it right away.
1660 OustandingRequestsStats stats = IncrementOutstandingRequestsMemory(1, *info);
1661 if (stats.memory_cost > max_outstanding_requests_cost_per_process_) {
1662 // We call "CancelWithError()" as a way of setting the net::URLRequest's
1663 // status -- it has no effect beyond this, since the request hasn't started.
1664 request->CancelWithError(net::ERR_INSUFFICIENT_RESOURCES);
1667 handler->OnResponseCompleted(info->GetRequestID(), request->status(),
1668 std::string(), &defer);
1670 // TODO(darin): The handler is not ready for us to kill the request. Oops!
1674 IncrementOutstandingRequestsMemory(-1, *info);
1676 // A ResourceHandler must not outlive its associated URLRequest.
1681 linked_ptr<ResourceLoader> loader(
1682 new ResourceLoader(request.Pass(), handler.Pass(), this));
1684 GlobalRoutingID id(info->GetGlobalRoutingID());
1685 BlockedLoadersMap::const_iterator iter = blocked_loaders_map_.find(id);
1686 if (iter != blocked_loaders_map_.end()) {
1687 // The request should be blocked.
1688 iter->second->push_back(loader);
1692 StartLoading(info, loader);
1695 void ResourceDispatcherHostImpl::StartLoading(
1696 ResourceRequestInfoImpl* info,
1697 const linked_ptr<ResourceLoader>& loader) {
1698 pending_loaders_[info->GetGlobalRequestID()] = loader;
1700 loader->StartRequest();
1703 void ResourceDispatcherHostImpl::OnUserGesture(WebContentsImpl* contents) {
1704 last_user_gesture_time_ = TimeTicks::Now();
1707 net::URLRequest* ResourceDispatcherHostImpl::GetURLRequest(
1708 const GlobalRequestID& id) {
1709 ResourceLoader* loader = GetLoader(id);
1713 return loader->request();
1718 // This function attempts to return the "more interesting" load state of |a|
1719 // and |b|. We don't have temporal information about these load states
1720 // (meaning we don't know when we transitioned into these states), so we just
1721 // rank them according to how "interesting" the states are.
1723 // We take advantage of the fact that the load states are an enumeration listed
1724 // in the order in which they occur during the lifetime of a request, so we can
1725 // regard states with larger numeric values as being further along toward
1726 // completion. We regard those states as more interesting to report since they
1727 // represent progress.
1729 // For example, by this measure "tranferring data" is a more interesting state
1730 // than "resolving host" because when we are transferring data we are actually
1731 // doing something that corresponds to changes that the user might observe,
1732 // whereas waiting for a host name to resolve implies being stuck.
1734 const net::LoadStateWithParam& MoreInterestingLoadState(
1735 const net::LoadStateWithParam& a, const net::LoadStateWithParam& b) {
1736 return (a.state < b.state) ? b : a;
1739 // Carries information about a load state change.
1742 net::LoadStateWithParam load_state;
1743 uint64 upload_position;
1747 // Map from ProcessID+RouteID pair to LoadState
1748 typedef std::map<GlobalRoutingID, LoadInfo> LoadInfoMap;
1750 // Used to marshal calls to LoadStateChanged from the IO to UI threads. We do
1751 // them all as a single callback to avoid spamming the UI thread.
1752 void LoadInfoUpdateCallback(const LoadInfoMap& info_map) {
1753 LoadInfoMap::const_iterator i;
1754 for (i = info_map.begin(); i != info_map.end(); ++i) {
1755 RenderViewHostImpl* view =
1756 RenderViewHostImpl::FromID(i->first.child_id, i->first.route_id);
1757 if (view) // The view could be gone at this point.
1758 view->LoadStateChanged(i->second.url, i->second.load_state,
1759 i->second.upload_position,
1760 i->second.upload_size);
1766 void ResourceDispatcherHostImpl::UpdateLoadStates() {
1767 // Populate this map with load state changes, and then send them on to the UI
1768 // thread where they can be passed along to the respective RVHs.
1769 LoadInfoMap info_map;
1771 LoaderMap::const_iterator i;
1773 // Determine the largest upload size of all requests
1774 // in each View (good chance it's zero).
1775 std::map<GlobalRoutingID, uint64> largest_upload_size;
1776 for (i = pending_loaders_.begin(); i != pending_loaders_.end(); ++i) {
1777 net::URLRequest* request = i->second->request();
1778 ResourceRequestInfoImpl* info = i->second->GetRequestInfo();
1779 uint64 upload_size = request->GetUploadProgress().size();
1780 if (request->GetLoadState().state != net::LOAD_STATE_SENDING_REQUEST)
1782 GlobalRoutingID id(info->GetGlobalRoutingID());
1783 if (upload_size && largest_upload_size[id] < upload_size)
1784 largest_upload_size[id] = upload_size;
1787 for (i = pending_loaders_.begin(); i != pending_loaders_.end(); ++i) {
1788 net::URLRequest* request = i->second->request();
1789 ResourceRequestInfoImpl* info = i->second->GetRequestInfo();
1790 net::LoadStateWithParam load_state = request->GetLoadState();
1791 net::UploadProgress progress = request->GetUploadProgress();
1793 // We also poll for upload progress on this timer and send upload
1794 // progress ipc messages to the plugin process.
1795 i->second->ReportUploadProgress();
1797 GlobalRoutingID id(info->GetGlobalRoutingID());
1799 // If a request is uploading data, ignore all other requests so that the
1800 // upload progress takes priority for being shown in the status bar.
1801 if (largest_upload_size.find(id) != largest_upload_size.end() &&
1802 progress.size() < largest_upload_size[id])
1805 net::LoadStateWithParam to_insert = load_state;
1806 LoadInfoMap::iterator existing = info_map.find(id);
1807 if (existing != info_map.end()) {
1809 MoreInterestingLoadState(existing->second.load_state, load_state);
1810 if (to_insert.state == existing->second.load_state.state)
1813 LoadInfo& load_info = info_map[id];
1814 load_info.url = request->url();
1815 load_info.load_state = to_insert;
1816 load_info.upload_size = progress.size();
1817 load_info.upload_position = progress.position();
1820 if (info_map.empty())
1823 BrowserThread::PostTask(
1824 BrowserThread::UI, FROM_HERE,
1825 base::Bind(&LoadInfoUpdateCallback, info_map));
1828 void ResourceDispatcherHostImpl::BlockRequestsForRoute(int child_id,
1830 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
1831 GlobalRoutingID key(child_id, route_id);
1832 DCHECK(blocked_loaders_map_.find(key) == blocked_loaders_map_.end()) <<
1833 "BlockRequestsForRoute called multiple time for the same RVH";
1834 blocked_loaders_map_[key] = new BlockedLoadersList();
1837 void ResourceDispatcherHostImpl::ResumeBlockedRequestsForRoute(int child_id,
1839 ProcessBlockedRequestsForRoute(child_id, route_id, false);
1842 void ResourceDispatcherHostImpl::CancelBlockedRequestsForRoute(int child_id,
1844 ProcessBlockedRequestsForRoute(child_id, route_id, true);
1847 void ResourceDispatcherHostImpl::ProcessBlockedRequestsForRoute(
1850 bool cancel_requests) {
1851 BlockedLoadersMap::iterator iter = blocked_loaders_map_.find(
1852 GlobalRoutingID(child_id, route_id));
1853 if (iter == blocked_loaders_map_.end()) {
1854 // It's possible to reach here if the renderer crashed while an interstitial
1855 // page was showing.
1859 BlockedLoadersList* loaders = iter->second;
1861 // Removing the vector from the map unblocks any subsequent requests.
1862 blocked_loaders_map_.erase(iter);
1864 for (BlockedLoadersList::iterator loaders_iter = loaders->begin();
1865 loaders_iter != loaders->end(); ++loaders_iter) {
1866 linked_ptr<ResourceLoader> loader = *loaders_iter;
1867 ResourceRequestInfoImpl* info = loader->GetRequestInfo();
1868 if (cancel_requests) {
1869 IncrementOutstandingRequestsMemory(-1, *info);
1871 StartLoading(info, loader);
1878 ResourceDispatcherHostImpl::HttpAuthRelationType
1879 ResourceDispatcherHostImpl::HttpAuthRelationTypeOf(
1880 const GURL& request_url,
1881 const GURL& first_party) {
1882 if (!first_party.is_valid())
1883 return HTTP_AUTH_RELATION_TOP;
1885 if (net::registry_controlled_domains::SameDomainOrHost(
1886 first_party, request_url,
1887 net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES))
1888 return HTTP_AUTH_RELATION_SAME_DOMAIN;
1890 if (allow_cross_origin_auth_prompt())
1891 return HTTP_AUTH_RELATION_ALLOWED_CROSS;
1893 return HTTP_AUTH_RELATION_BLOCKED_CROSS;
1896 bool ResourceDispatcherHostImpl::allow_cross_origin_auth_prompt() {
1897 return allow_cross_origin_auth_prompt_;
1900 bool ResourceDispatcherHostImpl::IsTransferredNavigation(
1901 const GlobalRequestID& id) const {
1902 ResourceLoader* loader = GetLoader(id);
1903 return loader ? loader->is_transferring() : false;
1906 ResourceLoader* ResourceDispatcherHostImpl::GetLoader(
1907 const GlobalRequestID& id) const {
1908 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
1910 LoaderMap::const_iterator i = pending_loaders_.find(id);
1911 if (i == pending_loaders_.end())
1914 return i->second.get();
1917 ResourceLoader* ResourceDispatcherHostImpl::GetLoader(int child_id,
1918 int request_id) const {
1919 return GetLoader(GlobalRequestID(child_id, request_id));
1922 void ResourceDispatcherHostImpl::RegisterResourceMessageDelegate(
1923 const GlobalRequestID& id, ResourceMessageDelegate* delegate) {
1924 DelegateMap::iterator it = delegate_map_.find(id);
1925 if (it == delegate_map_.end()) {
1926 it = delegate_map_.insert(
1927 std::make_pair(id, new ObserverList<ResourceMessageDelegate>)).first;
1929 it->second->AddObserver(delegate);
1932 void ResourceDispatcherHostImpl::UnregisterResourceMessageDelegate(
1933 const GlobalRequestID& id, ResourceMessageDelegate* delegate) {
1934 DCHECK(ContainsKey(delegate_map_, id));
1935 DelegateMap::iterator it = delegate_map_.find(id);
1936 DCHECK(it->second->HasObserver(delegate));
1937 it->second->RemoveObserver(delegate);
1938 if (!it->second->might_have_observers()) {
1940 delegate_map_.erase(it);
1944 int ResourceDispatcherHostImpl::BuildLoadFlagsForRequest(
1945 const ResourceHostMsg_Request& request_data,
1947 bool is_sync_load) {
1948 int load_flags = request_data.load_flags;
1950 // Although EV status is irrelevant to sub-frames and sub-resources, we have
1951 // to perform EV certificate verification on all resources because an HTTP
1952 // keep-alive connection created to load a sub-frame or a sub-resource could
1953 // be reused to load a main frame.
1954 load_flags |= net::LOAD_VERIFY_EV_CERT;
1955 if (request_data.resource_type == ResourceType::MAIN_FRAME) {
1956 load_flags |= net::LOAD_MAIN_FRAME;
1957 } else if (request_data.resource_type == ResourceType::SUB_FRAME) {
1958 load_flags |= net::LOAD_SUB_FRAME;
1959 } else if (request_data.resource_type == ResourceType::PREFETCH) {
1960 load_flags |= (net::LOAD_PREFETCH | net::LOAD_DO_NOT_PROMPT_FOR_LOGIN);
1961 } else if (request_data.resource_type == ResourceType::FAVICON) {
1962 load_flags |= net::LOAD_DO_NOT_PROMPT_FOR_LOGIN;
1963 } else if (request_data.resource_type == ResourceType::IMAGE) {
1964 // Prevent third-party image content from prompting for login, as this
1965 // is often a scam to extract credentials for another domain from the user.
1966 // Only block image loads, as the attack applies largely to the "src"
1967 // property of the <img> tag. It is common for web properties to allow
1968 // untrusted values for <img src>; this is considered a fair thing for an
1969 // HTML sanitizer to do. Conversely, any HTML sanitizer that didn't
1970 // filter sources for <script>, <link>, <embed>, <object>, <iframe> tags
1971 // would be considered vulnerable in and of itself.
1972 HttpAuthRelationType relation_type = HttpAuthRelationTypeOf(
1973 request_data.url, request_data.first_party_for_cookies);
1974 if (relation_type == HTTP_AUTH_RELATION_BLOCKED_CROSS) {
1975 load_flags |= (net::LOAD_DO_NOT_USE_EMBEDDED_IDENTITY |
1976 net::LOAD_DO_NOT_PROMPT_FOR_LOGIN);
1981 load_flags |= net::LOAD_IGNORE_LIMITS;
1983 ChildProcessSecurityPolicyImpl* policy =
1984 ChildProcessSecurityPolicyImpl::GetInstance();
1985 if (!policy->CanSendCookiesForOrigin(child_id, request_data.url)) {
1986 load_flags |= (net::LOAD_DO_NOT_SEND_COOKIES |
1987 net::LOAD_DO_NOT_SEND_AUTH_DATA |
1988 net::LOAD_DO_NOT_SAVE_COOKIES);
1991 // Raw headers are sensitive, as they include Cookie/Set-Cookie, so only
1992 // allow requesting them if requester has ReadRawCookies permission.
1993 if ((load_flags & net::LOAD_REPORT_RAW_HEADERS)
1994 && !policy->CanReadRawCookies(child_id)) {
1995 VLOG(1) << "Denied unauthorized request for raw headers";
1996 load_flags &= ~net::LOAD_REPORT_RAW_HEADERS;
2002 } // namespace content