Google Git
Sign in
chromium / chromium / src / 6a32a203bbae04ef29a42f3f364ec00a0adf9179 / . / content / browser / loader / resource_dispatcher_host_impl.cc
blob: b8720c0e3aec0ed2e7a6ae991193fc7e55b1944f [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
#include "content/browser/loader/resource_dispatcher_host_impl.h"
#include <algorithm>
#include <set>
#include <vector>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/debug/alias.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/shared_memory.h"
#include "base/message_loop/message_loop.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/sparse_histogram.h"
#include "base/profiler/scoped_tracker.h"
#include "base/stl_util.h"
#include "base/strings/string_util.h"
#include "base/third_party/dynamic_annotations/dynamic_annotations.h"
#include "base/time/time.h"
#include "content/browser/appcache/appcache_interceptor.h"
#include "content/browser/appcache/chrome_appcache_service.h"
#include "content/browser/bad_message.h"
#include "content/browser/cert_store_impl.h"
#include "content/browser/child_process_security_policy_impl.h"
#include "content/browser/download/download_resource_handler.h"
#include "content/browser/download/save_file_manager.h"
#include "content/browser/download/save_file_resource_handler.h"
#include "content/browser/fileapi/chrome_blob_storage_context.h"
#include "content/browser/frame_host/navigation_request_info.h"
#include "content/browser/frame_host/navigator.h"
#include "content/browser/loader/async_resource_handler.h"
#include "content/browser/loader/async_revalidation_manager.h"
#include "content/browser/loader/cross_site_resource_handler.h"
#include "content/browser/loader/detachable_resource_handler.h"
#include "content/browser/loader/mime_type_resource_handler.h"
#include "content/browser/loader/navigation_resource_handler.h"
#include "content/browser/loader/navigation_resource_throttle.h"
#include "content/browser/loader/navigation_url_loader_impl_core.h"
#include "content/browser/loader/power_save_block_resource_throttle.h"
#include "content/browser/loader/redirect_to_file_resource_handler.h"
#include "content/browser/loader/resource_message_filter.h"
#include "content/browser/loader/resource_request_info_impl.h"
#include "content/browser/loader/stream_resource_handler.h"
#include "content/browser/loader/sync_resource_handler.h"
#include "content/browser/loader/throttling_resource_handler.h"
#include "content/browser/loader/upload_data_stream_builder.h"
#include "content/browser/renderer_host/render_view_host_delegate.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/resource_context_impl.h"
#include "content/browser/service_worker/foreign_fetch_request_handler.h"
#include "content/browser/service_worker/service_worker_request_handler.h"
#include "content/browser/streams/stream.h"
#include "content/browser/streams/stream_context.h"
#include "content/browser/streams/stream_registry.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/common/appcache_interfaces.h"
#include "content/common/navigation_params.h"
#include "content/common/resource_messages.h"
#include "content/common/site_isolation_policy.h"
#include "content/common/ssl_status_serialization.h"
#include "content/common/view_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/download_manager.h"
#include "content/public/browser/download_url_parameters.h"
#include "content/public/browser/global_request_id.h"
#include "content/public/browser/plugin_service.h"
#include "content/public/browser/resource_dispatcher_host_delegate.h"
#include "content/public/browser/resource_request_details.h"
#include "content/public/browser/resource_throttle.h"
#include "content/public/browser/stream_handle.h"
#include "content/public/browser/stream_info.h"
#include "content/public/browser/user_metrics.h"
#include "content/public/common/browser_side_navigation_policy.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/process_type.h"
#include "ipc/ipc_message_macros.h"
#include "ipc/ipc_message_start.h"
#include "net/base/auth.h"
#include "net/base/load_flags.h"
#include "net/base/mime_util.h"
#include "net/base/net_errors.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/base/request_priority.h"
#include "net/base/upload_data_stream.h"
#include "net/cert/cert_status_flags.h"
#include "net/cookies/cookie_monster.h"
#include "net/http/http_response_headers.h"
#include "net/http/http_response_info.h"
#include "net/ssl/ssl_cert_request_info.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_job_factory.h"
#include "storage/browser/blob/blob_data_handle.h"
#include "storage/browser/blob/blob_storage_context.h"
#include "storage/browser/blob/blob_url_request_job_factory.h"
#include "storage/browser/blob/shareable_file_reference.h"
#include "storage/browser/fileapi/file_permission_policy.h"
#include "storage/browser/fileapi/file_system_context.h"
#include "url/url_constants.h"
using base::Time;
using base::TimeDelta;
using base::TimeTicks;
using storage::ShareableFileReference;
// ----------------------------------------------------------------------------
namespace content {
namespace {
static ResourceDispatcherHostImpl* g_resource_dispatcher_host;
// The interval for calls to ResourceDispatcherHostImpl::UpdateLoadStates
const int kUpdateLoadStatesIntervalMsec = 250;
// Maximum byte "cost" of all the outstanding requests for a renderer.
// See delcaration of |max_outstanding_requests_cost_per_process_| for details.
// This bound is 25MB, which allows for around 6000 outstanding requests.
const int kMaxOutstandingRequestsCostPerProcess = 26214400;
// The number of milliseconds after noting a user gesture that we will
// tag newly-created URLRequest objects with the
// net::LOAD_MAYBE_USER_GESTURE load flag. This is a fairly arbitrary
// guess at how long to expect direct impact from a user gesture, but
// this should be OK as the load flag is a best-effort thing only,
// rather than being intended as fully accurate.
const int kUserGestureWindowMs = 3500;
// Ratio of |max_num_in_flight_requests_| that any one renderer is allowed to
// use. Arbitrarily chosen.
const double kMaxRequestsPerProcessRatio = 0.45;
// TODO(jkarlin): The value is high to reduce the chance of the detachable
// request timing out, forcing a blocked second request to open a new connection
// and start over. Reduce this value once we have a better idea of what it
// should be and once we stop blocking multiple simultaneous requests for the
// same resource (see bugs 46104 and 31014).
const int kDefaultDetachableCancelDelayMs = 30000;
enum SHA1HistogramTypes {
// SHA-1 is not present in the certificate chain.
SHA1_NOT_PRESENT = 0,
// SHA-1 is present in the certificate chain, and the leaf expires on or
// after January 1, 2017.
SHA1_EXPIRES_AFTER_JANUARY_2017 = 1,
// SHA-1 is present in the certificate chain, and the leaf expires on or
// after June 1, 2016.
SHA1_EXPIRES_AFTER_JUNE_2016 = 2,
// SHA-1 is present in the certificate chain, and the leaf expires on or
// after January 1, 2016.
SHA1_EXPIRES_AFTER_JANUARY_2016 = 3,
// SHA-1 is present in the certificate chain, but the leaf expires before
// January 1, 2016
SHA1_PRESENT = 4,
// Always keep this at the end.
SHA1_HISTOGRAM_TYPES_MAX,
};
void RecordCertificateHistograms(const net::SSLInfo& ssl_info,
ResourceType resource_type) {
// The internal representation of the dates for UI treatment of SHA-1.
// See http://crbug.com/401365 for details
static const int64_t kJanuary2017 = INT64_C(13127702400000000);
static const int64_t kJune2016 = INT64_C(13109213000000000);
static const int64_t kJanuary2016 = INT64_C(13096080000000000);
SHA1HistogramTypes sha1_histogram = SHA1_NOT_PRESENT;
if (ssl_info.cert_status & net::CERT_STATUS_SHA1_SIGNATURE_PRESENT) {
DCHECK(ssl_info.cert.get());
if (ssl_info.cert->valid_expiry() >=
base::Time::FromInternalValue(kJanuary2017)) {
sha1_histogram = SHA1_EXPIRES_AFTER_JANUARY_2017;
} else if (ssl_info.cert->valid_expiry() >=
base::Time::FromInternalValue(kJune2016)) {
sha1_histogram = SHA1_EXPIRES_AFTER_JUNE_2016;
} else if (ssl_info.cert->valid_expiry() >=
base::Time::FromInternalValue(kJanuary2016)) {
sha1_histogram = SHA1_EXPIRES_AFTER_JANUARY_2016;
} else {
sha1_histogram = SHA1_PRESENT;
}
}
if (resource_type == RESOURCE_TYPE_MAIN_FRAME) {
UMA_HISTOGRAM_ENUMERATION("Net.Certificate.SHA1.MainFrame",
sha1_histogram,
SHA1_HISTOGRAM_TYPES_MAX);
} else {
UMA_HISTOGRAM_ENUMERATION("Net.Certificate.SHA1.Subresource",
sha1_histogram,
SHA1_HISTOGRAM_TYPES_MAX);
}
}
bool IsDetachableResourceType(ResourceType type) {
switch (type) {
case RESOURCE_TYPE_PREFETCH:
case RESOURCE_TYPE_PING:
case RESOURCE_TYPE_CSP_REPORT:
return true;
default:
return false;
}
}
// Aborts a request before an URLRequest has actually been created.
void AbortRequestBeforeItStarts(ResourceMessageFilter* filter,
IPC::Message* sync_result,
int request_id) {
if (sync_result) {
SyncLoadResult result;
result.error_code = net::ERR_ABORTED;
ResourceHostMsg_SyncLoad::WriteReplyParams(sync_result, result);
filter->Send(sync_result);
} else {
// Tell the renderer that this request was disallowed.
ResourceMsg_RequestCompleteData request_complete_data;
request_complete_data.error_code = net::ERR_ABORTED;
request_complete_data.was_ignored_by_handler = false;
request_complete_data.exists_in_cache = false;
// No security info needed, connection not established.
request_complete_data.completion_time = base::TimeTicks();
request_complete_data.encoded_data_length = 0;
filter->Send(new ResourceMsg_RequestComplete(
request_id, request_complete_data));
}
}
void SetReferrerForRequest(net::URLRequest* request, const Referrer& referrer) {
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
if (!referrer.url.is_valid() ||
command_line->HasSwitch(switches::kNoReferrers)) {
request->SetReferrer(std::string());
} else {
request->SetReferrer(referrer.url.spec());
}
net::URLRequest::ReferrerPolicy net_referrer_policy =
net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
switch (referrer.policy) {
case blink::WebReferrerPolicyAlways:
case blink::WebReferrerPolicyNever:
case blink::WebReferrerPolicyOrigin:
net_referrer_policy = net::URLRequest::NEVER_CLEAR_REFERRER;
break;
case blink::WebReferrerPolicyNoReferrerWhenDowngrade:
net_referrer_policy =
net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
break;
case blink::WebReferrerPolicyOriginWhenCrossOrigin:
net_referrer_policy =
net::URLRequest::ORIGIN_ONLY_ON_TRANSITION_CROSS_ORIGIN;
break;
case blink::WebReferrerPolicyDefault:
default:
net_referrer_policy =
command_line->HasSwitch(switches::kReducedReferrerGranularity)
? net::URLRequest::
REDUCE_REFERRER_GRANULARITY_ON_TRANSITION_CROSS_ORIGIN
: net::URLRequest::
CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
break;
}
request->set_referrer_policy(net_referrer_policy);
}
// Consults the RendererSecurity policy to determine whether the
// ResourceDispatcherHostImpl should service this request. A request might be
// disallowed if the renderer is not authorized to retrieve the request URL or
// if the renderer is attempting to upload an unauthorized file.
bool ShouldServiceRequest(int process_type,
int child_id,
const ResourceHostMsg_Request& request_data,
const net::HttpRequestHeaders& headers,
ResourceMessageFilter* filter,
ResourceContext* resource_context) {
if (process_type == PROCESS_TYPE_PLUGIN)
return true;
ChildProcessSecurityPolicyImpl* policy =
ChildProcessSecurityPolicyImpl::GetInstance();
// Check if the renderer is permitted to request the requested URL.
if (!policy->CanRequestURL(child_id, request_data.url)) {
VLOG(1) << "Denied unauthorized request for "
<< request_data.url.possibly_invalid_spec();
return false;
}
// Check if the renderer is using an illegal Origin header. If so, kill it.
std::string origin_string;
bool has_origin = headers.GetHeader("Origin", &origin_string) &&
origin_string != "null";
if (has_origin) {
GURL origin(origin_string);
if (!policy->CanCommitURL(child_id, origin) ||
GetContentClient()->browser()->IsIllegalOrigin(resource_context,
child_id, origin)) {
VLOG(1) << "Killed renderer for illegal origin: " << origin_string;
bad_message::ReceivedBadMessage(filter, bad_message::RDH_ILLEGAL_ORIGIN);
return false;
}
}
// Check if the renderer is permitted to upload the requested files.
if (request_data.request_body.get()) {
const std::vector<ResourceRequestBody::Element>* uploads =
request_data.request_body->elements();
std::vector<ResourceRequestBody::Element>::const_iterator iter;
for (iter = uploads->begin(); iter != uploads->end(); ++iter) {
if (iter->type() == ResourceRequestBody::Element::TYPE_FILE &&
!policy->CanReadFile(child_id, iter->path())) {
NOTREACHED() << "Denied unauthorized upload of "
<< iter->path().value();
return false;
}
if (iter->type() == ResourceRequestBody::Element::TYPE_FILE_FILESYSTEM) {
storage::FileSystemURL url =
filter->file_system_context()->CrackURL(iter->filesystem_url());
if (!policy->CanReadFileSystemFile(child_id, url)) {
NOTREACHED() << "Denied unauthorized upload of "
<< iter->filesystem_url().spec();
return false;
}
}
}
}
return true;
}
void RemoveDownloadFileFromChildSecurityPolicy(int child_id,
const base::FilePath& path) {
ChildProcessSecurityPolicyImpl::GetInstance()->RevokeAllPermissionsForFile(
child_id, path);
}
DownloadInterruptReason CallbackAndReturn(
const DownloadUrlParameters::OnStartedCallback& started_cb,
DownloadInterruptReason interrupt_reason) {
if (started_cb.is_null())
return interrupt_reason;
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(
started_cb, static_cast<DownloadItem*>(NULL), interrupt_reason));
return interrupt_reason;
}
int GetCertID(net::URLRequest* request, int child_id) {
if (request->ssl_info().cert.get()) {
return CertStore::GetInstance()->StoreCert(request->ssl_info().cert.get(),
child_id);
}
return 0;
}
void NotifyRedirectOnUI(int render_process_id,
int render_frame_host,
scoped_ptr<ResourceRedirectDetails> details) {
RenderFrameHostImpl* host =
RenderFrameHostImpl::FromID(render_process_id, render_frame_host);
WebContentsImpl* web_contents =
static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(host));
if (!web_contents)
return;
web_contents->DidGetRedirectForResourceRequest(host, *details.get());
}
void NotifyResponseOnUI(int render_process_id,
int render_frame_host,
scoped_ptr<ResourceRequestDetails> details) {
RenderFrameHostImpl* host =
RenderFrameHostImpl::FromID(render_process_id, render_frame_host);
WebContentsImpl* web_contents =
static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(host));
if (!web_contents)
return;
web_contents->DidGetResourceResponseStart(*details.get());
}
bool IsValidatedSCT(
const net::SignedCertificateTimestampAndStatus& sct_status) {
return sct_status.status == net::ct::SCT_STATUS_OK;
}
storage::BlobStorageContext* GetBlobStorageContext(
ChromeBlobStorageContext* blob_storage_context) {
if (!blob_storage_context)
return NULL;
return blob_storage_context->context();
}
void AttachRequestBodyBlobDataHandles(
ResourceRequestBody* body,
storage::BlobStorageContext* blob_context) {
DCHECK(blob_context);
for (size_t i = 0; i < body->elements()->size(); ++i) {
const ResourceRequestBody::Element& element = (*body->elements())[i];
if (element.type() != ResourceRequestBody::Element::TYPE_BLOB)
continue;
scoped_ptr<storage::BlobDataHandle> handle =
blob_context->GetBlobDataFromUUID(element.blob_uuid());
DCHECK(handle);
if (!handle)
continue;
// Ensure the blob and any attached shareable files survive until
// upload completion. The |body| takes ownership of |handle|.
const void* key = handle.get();
body->SetUserData(key, handle.release());
}
}
// PlzNavigate
// This method is called in the UI thread to send the timestamp of a resource
// request to the respective Navigator (for an UMA histogram).
void LogResourceRequestTimeOnUI(
base::TimeTicks timestamp,
int render_process_id,
int render_frame_id,
const GURL& url) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
RenderFrameHostImpl* host =
RenderFrameHostImpl::FromID(render_process_id, render_frame_id);
if (host != NULL) {
DCHECK(host->frame_tree_node()->IsMainFrame());
host->frame_tree_node()->navigator()->LogResourceRequestTime(
timestamp, url);
}
}
bool IsUsingLoFi(LoFiState lofi_state,
ResourceDispatcherHostDelegate* delegate,
const net::URLRequest& request,
ResourceContext* resource_context) {
if (lofi_state == LOFI_UNSPECIFIED && delegate)
return delegate->ShouldEnableLoFiMode(request, resource_context);
return lofi_state == LOFI_ON;
}
} // namespace
// static
ResourceDispatcherHost* ResourceDispatcherHost::Get() {
return g_resource_dispatcher_host;
}
ResourceDispatcherHostImpl::ResourceDispatcherHostImpl()
: save_file_manager_(new SaveFileManager()),
request_id_(-1),
is_shutdown_(false),
num_in_flight_requests_(0),
max_num_in_flight_requests_(base::SharedMemory::GetHandleLimit()),
max_num_in_flight_requests_per_process_(
static_cast<int>(
max_num_in_flight_requests_ * kMaxRequestsPerProcessRatio)),
max_outstanding_requests_cost_per_process_(
kMaxOutstandingRequestsCostPerProcess),
filter_(NULL),
delegate_(NULL),
allow_cross_origin_auth_prompt_(false) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(!g_resource_dispatcher_host);
g_resource_dispatcher_host = this;
GetContentClient()->browser()->ResourceDispatcherHostCreated();
ANNOTATE_BENIGN_RACE(
&last_user_gesture_time_,
"We don't care about the precise value, see http://crbug.com/92889");
BrowserThread::PostTask(BrowserThread::IO,
FROM_HERE,
base::Bind(&ResourceDispatcherHostImpl::OnInit,
base::Unretained(this)));
update_load_states_timer_.reset(new base::RepeatingTimer());
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
// This needs to be called to mark the trial as active, even if the result
// isn't used.
std::string stale_while_revalidate_trial_group =
base::FieldTrialList::FindFullName("StaleWhileRevalidate");
// stale-while-revalidate currently doesn't work with browser-side navigation.
// Only enable stale-while-revalidate if browser navigation is not enabled.
//
// TODO(ricea): Make stale-while-revalidate and browser-side navigation work
// together. Or disable stale-while-revalidate completely before browser-side
// navigation becomes the default. crbug.com/561610
if (!IsBrowserSideNavigationEnabled() &&
(base::StartsWith(stale_while_revalidate_trial_group, "Enabled",
base::CompareCase::SENSITIVE) ||
command_line->HasSwitch(switches::kEnableStaleWhileRevalidate))) {
async_revalidation_manager_.reset(new AsyncRevalidationManager);
}
}
ResourceDispatcherHostImpl::~ResourceDispatcherHostImpl() {
DCHECK(outstanding_requests_stats_map_.empty());
DCHECK(g_resource_dispatcher_host);
g_resource_dispatcher_host = NULL;
}
// static
ResourceDispatcherHostImpl* ResourceDispatcherHostImpl::Get() {
return g_resource_dispatcher_host;
}
void ResourceDispatcherHostImpl::SetDelegate(
ResourceDispatcherHostDelegate* delegate) {
delegate_ = delegate;
}
void ResourceDispatcherHostImpl::SetAllowCrossOriginAuthPrompt(bool value) {
allow_cross_origin_auth_prompt_ = value;
}
void ResourceDispatcherHostImpl::AddResourceContext(ResourceContext* context) {
active_resource_contexts_.insert(context);
}
void ResourceDispatcherHostImpl::RemoveResourceContext(
ResourceContext* context) {
CHECK(ContainsKey(active_resource_contexts_, context));
active_resource_contexts_.erase(context);
}
void ResourceDispatcherHostImpl::CancelRequestsForContext(
ResourceContext* context) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(context);
CHECK(ContainsKey(active_resource_contexts_, context));
// Note that request cancellation has side effects. Therefore, we gather all
// the requests to cancel first, and then we start cancelling. We assert at
// the end that there are no more to cancel since the context is about to go
// away.
typedef std::vector<linked_ptr<ResourceLoader>> LoaderList;
LoaderList loaders_to_cancel;
for (LoaderMap::iterator i = pending_loaders_.begin();
i != pending_loaders_.end();) {
if (i->second->GetRequestInfo()->GetContext() == context) {
loaders_to_cancel.push_back(i->second);
IncrementOutstandingRequestsMemory(-1, *i->second->GetRequestInfo());
pending_loaders_.erase(i++);
} else {
++i;
}
}
for (BlockedLoadersMap::iterator i = blocked_loaders_map_.begin();
i != blocked_loaders_map_.end();) {
BlockedLoadersList* loaders = i->second;
if (loaders->empty()) {
// This can happen if BlockRequestsForRoute() has been called for a route,
// but we haven't blocked any matching requests yet.
++i;
continue;
}
ResourceRequestInfoImpl* info = loaders->front()->GetRequestInfo();
if (info->GetContext() == context) {
blocked_loaders_map_.erase(i++);
for (BlockedLoadersList::const_iterator it = loaders->begin();
it != loaders->end(); ++it) {
linked_ptr<ResourceLoader> loader = *it;
info = loader->GetRequestInfo();
// We make the assumption that all requests on the list have the same
// ResourceContext.
DCHECK_EQ(context, info->GetContext());
IncrementOutstandingRequestsMemory(-1, *info);
loaders_to_cancel.push_back(loader);
}
delete loaders;
} else {
++i;
}
}
#ifndef NDEBUG
for (LoaderList::iterator i = loaders_to_cancel.begin();
i != loaders_to_cancel.end(); ++i) {
// There is no strict requirement that this be the case, but currently
// downloads, streams, detachable requests, transferred requests, and
// browser-owned requests are the only requests that aren't cancelled when
// the associated processes go away. It may be OK for this invariant to
// change in the future, but if this assertion fires without the invariant
// changing, then it's indicative of a leak.
DCHECK((*i)->GetRequestInfo()->IsDownload() ||
(*i)->GetRequestInfo()->is_stream() ||
((*i)->GetRequestInfo()->detachable_handler() &&
(*i)->GetRequestInfo()->detachable_handler()->is_detached()) ||
(*i)->GetRequestInfo()->GetProcessType() == PROCESS_TYPE_BROWSER ||
(*i)->is_transferring());
}
#endif
loaders_to_cancel.clear();
if (async_revalidation_manager_) {
// Cancelling async revalidations should not result in the creation of new
// requests. Do it before the CHECKs to ensure this does not happen.
async_revalidation_manager_->CancelAsyncRevalidationsForResourceContext(
context);
}
// Validate that no more requests for this context were added.
for (LoaderMap::const_iterator i = pending_loaders_.begin();
i != pending_loaders_.end(); ++i) {
// http://crbug.com/90971
CHECK_NE(i->second->GetRequestInfo()->GetContext(), context);
}
for (BlockedLoadersMap::const_iterator i = blocked_loaders_map_.begin();
i != blocked_loaders_map_.end(); ++i) {
BlockedLoadersList* loaders = i->second;
if (!loaders->empty()) {
ResourceRequestInfoImpl* info = loaders->front()->GetRequestInfo();
// http://crbug.com/90971
CHECK_NE(info->GetContext(), context);
}
}
}
DownloadInterruptReason ResourceDispatcherHostImpl::BeginDownload(
scoped_ptr<net::URLRequest> request,
const Referrer& referrer,
bool is_content_initiated,
ResourceContext* context,
int child_id,
int render_view_route_id,
int render_frame_route_id,
bool prefer_cache,
bool do_not_prompt_for_login,
scoped_ptr<DownloadSaveInfo> save_info,
uint32 download_id,
const DownloadStartedCallback& started_callback) {
if (is_shutdown_)
return CallbackAndReturn(started_callback,
DOWNLOAD_INTERRUPT_REASON_USER_SHUTDOWN);
const GURL& url = request->original_url();
// http://crbug.com/90971
char url_buf[128];
base::strlcpy(url_buf, url.spec().c_str(), arraysize(url_buf));
base::debug::Alias(url_buf);
CHECK(ContainsKey(active_resource_contexts_, context));
SetReferrerForRequest(request.get(), referrer);
int extra_load_flags = net::LOAD_NORMAL;
if (prefer_cache) {
// If there is upload data attached, only retrieve from cache because there
// is no current mechanism to prompt the user for their consent for a
// re-post. For GETs, try to retrieve data from the cache and skip
// validating the entry if present.
if (request->get_upload() != NULL)
extra_load_flags |= net::LOAD_ONLY_FROM_CACHE;
else
extra_load_flags |= net::LOAD_PREFERRING_CACHE;
} else {
extra_load_flags |= net::LOAD_DISABLE_CACHE;
}
request->SetLoadFlags(request->load_flags() | extra_load_flags);
// We treat a download as a main frame load, and thus update the policy URL on
// redirects.
//
// TODO(davidben): Is this correct? If this came from a
// ViewHostMsg_DownloadUrl in a frame, should it have first-party URL set
// appropriately?
request->set_first_party_url_policy(
net::URLRequest::UPDATE_FIRST_PARTY_URL_ON_REDIRECT);
// Check if the renderer is permitted to request the requested URL.
if (!ChildProcessSecurityPolicyImpl::GetInstance()->
CanRequestURL(child_id, url)) {
VLOG(1) << "Denied unauthorized download request for "
<< url.possibly_invalid_spec();
return CallbackAndReturn(started_callback,
DOWNLOAD_INTERRUPT_REASON_NETWORK_INVALID_REQUEST);
}
request_id_--;
const net::URLRequestContext* request_context = context->GetRequestContext();
if (!request_context->job_factory()->IsHandledURL(url)) {
VLOG(1) << "Download request for unsupported protocol: "
<< url.possibly_invalid_spec();
return CallbackAndReturn(started_callback,
DOWNLOAD_INTERRUPT_REASON_NETWORK_INVALID_REQUEST);
}
ResourceRequestInfoImpl* extra_info =
CreateRequestInfo(child_id, render_view_route_id,
render_frame_route_id, true, context);
extra_info->set_do_not_prompt_for_login(do_not_prompt_for_login);
extra_info->AssociateWithRequest(request.get()); // Request takes ownership.
if (request->url().SchemeIs(url::kBlobScheme)) {
ChromeBlobStorageContext* blob_context =
GetChromeBlobStorageContextForResourceContext(context);
storage::BlobProtocolHandler::SetRequestedBlobDataHandle(
request.get(),
blob_context->context()->GetBlobDataFromPublicURL(request->url()));
}
// From this point forward, the |DownloadResourceHandler| is responsible for
// |started_callback|.
scoped_ptr<ResourceHandler> handler(
CreateResourceHandlerForDownload(request.get(), is_content_initiated,
true, download_id, save_info.Pass(),
started_callback));
BeginRequestInternal(request.Pass(), handler.Pass());
return DOWNLOAD_INTERRUPT_REASON_NONE;
}
void ResourceDispatcherHostImpl::ClearLoginDelegateForRequest(
net::URLRequest* request) {
ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
if (info) {
ResourceLoader* loader = GetLoader(info->GetGlobalRequestID());
if (loader)
loader->ClearLoginDelegate();
}
}
void ResourceDispatcherHostImpl::Shutdown() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
BrowserThread::PostTask(BrowserThread::IO,
FROM_HERE,
base::Bind(&ResourceDispatcherHostImpl::OnShutdown,
base::Unretained(this)));
}
scoped_ptr<ResourceHandler>
ResourceDispatcherHostImpl::CreateResourceHandlerForDownload(
net::URLRequest* request,
bool is_content_initiated,
bool must_download,
uint32 id,
scoped_ptr<DownloadSaveInfo> save_info,
const DownloadUrlParameters::OnStartedCallback& started_cb) {
scoped_ptr<ResourceHandler> handler(
new DownloadResourceHandler(id, request, started_cb, save_info.Pass()));
if (delegate_) {
const ResourceRequestInfoImpl* request_info(
ResourceRequestInfoImpl::ForRequest(request));
ScopedVector<ResourceThrottle> throttles;
delegate_->DownloadStarting(
request, request_info->GetContext(), request_info->GetChildID(),
request_info->GetRouteID(), request_info->GetRequestID(),
is_content_initiated, must_download, &throttles);
if (!throttles.empty()) {
handler.reset(
new ThrottlingResourceHandler(
handler.Pass(), request, throttles.Pass()));
}
}
return handler.Pass();
}
scoped_ptr<ResourceHandler> ResourceDispatcherHostImpl::MaybeInterceptAsStream(
const base::FilePath& plugin_path,
net::URLRequest* request,
ResourceResponse* response,
std::string* payload) {
payload->clear();
ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
const std::string& mime_type = response->head.mime_type;
GURL origin;
if (!delegate_ ||
!delegate_->ShouldInterceptResourceAsStream(
request, plugin_path, mime_type, &origin, payload)) {
return scoped_ptr<ResourceHandler>();
}
StreamContext* stream_context =
GetStreamContextForResourceContext(info->GetContext());
scoped_ptr<StreamResourceHandler> handler(
new StreamResourceHandler(request,
stream_context->registry(),
origin));
info->set_is_stream(true);
scoped_ptr<StreamInfo> stream_info(new StreamInfo);
stream_info->handle = handler->stream()->CreateHandle();
stream_info->original_url = request->url();
stream_info->mime_type = mime_type;
// Make a copy of the response headers so it is safe to pass across threads;
// the old handler (AsyncResourceHandler) may modify it in parallel via the
// ResourceDispatcherHostDelegate.
if (response->head.headers.get()) {
stream_info->response_headers =
new net::HttpResponseHeaders(response->head.headers->raw_headers());
}
delegate_->OnStreamCreated(request, stream_info.Pass());
return handler.Pass();
}
ResourceDispatcherHostLoginDelegate*
ResourceDispatcherHostImpl::CreateLoginDelegate(
ResourceLoader* loader,
net::AuthChallengeInfo* auth_info) {
if (!delegate_)
return NULL;
return delegate_->CreateLoginDelegate(auth_info, loader->request());
}
bool ResourceDispatcherHostImpl::HandleExternalProtocol(ResourceLoader* loader,
const GURL& url) {
if (!delegate_)
return false;
ResourceRequestInfoImpl* info = loader->GetRequestInfo();
if (!IsResourceTypeFrame(info->GetResourceType()))
return false;
const net::URLRequestJobFactory* job_factory =
info->GetContext()->GetRequestContext()->job_factory();
if (job_factory->IsHandledURL(url))
return false;
return delegate_->HandleExternalProtocol(
url, info->GetChildID(), info->GetRouteID(), info->IsMainFrame(),
info->GetPageTransition(), info->HasUserGesture());
}
void ResourceDispatcherHostImpl::DidStartRequest(ResourceLoader* loader) {
// Make sure we have the load state monitor running.
if (!update_load_states_timer_->IsRunning() &&
scheduler_->HasLoadingClients()) {
update_load_states_timer_->Start(
FROM_HERE, TimeDelta::FromMilliseconds(kUpdateLoadStatesIntervalMsec),
this, &ResourceDispatcherHostImpl::UpdateLoadInfo);
}
}
void ResourceDispatcherHostImpl::DidReceiveRedirect(ResourceLoader* loader,
const GURL& new_url) {
ResourceRequestInfoImpl* info = loader->GetRequestInfo();
int render_process_id, render_frame_host;
if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_host))
return;
net::URLRequest* request = loader->request();
if (request->response_info().async_revalidation_required) {
// Async revalidation is only supported for the first redirect leg.
DCHECK_EQ(request->url_chain().size(), 1u);
DCHECK(async_revalidation_manager_);
async_revalidation_manager_->BeginAsyncRevalidation(*request,
scheduler_.get());
}
// Remove the LOAD_SUPPORT_ASYNC_REVALIDATION flag if it is present.
// It is difficult to create a URLRequest with the correct flags and headers
// for redirect legs other than the first one. Since stale-while-revalidate in
// combination with redirects isn't needed for experimental use, punt on it
// for now.
// TODO(ricea): Fix this before launching the feature.
if (request->load_flags() & net::LOAD_SUPPORT_ASYNC_REVALIDATION) {
int new_load_flags =
request->load_flags() & ~net::LOAD_SUPPORT_ASYNC_REVALIDATION;
request->SetLoadFlags(new_load_flags);
}
// Don't notify WebContents observers for requests known to be
// downloads; they aren't really associated with the Webcontents.
// Note that not all downloads are known before content sniffing.
if (info->IsDownload())
return;
// Notify the observers on the UI thread.
scoped_ptr<ResourceRedirectDetails> detail(new ResourceRedirectDetails(
loader->request(),
GetCertID(loader->request(), info->GetChildID()),
new_url));
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(
&NotifyRedirectOnUI,
render_process_id, render_frame_host, base::Passed(&detail)));
}
void ResourceDispatcherHostImpl::DidReceiveResponse(ResourceLoader* loader) {
ResourceRequestInfoImpl* info = loader->GetRequestInfo();
net::URLRequest* request = loader->request();
if (request->was_fetched_via_proxy() &&
request->was_fetched_via_spdy() &&
request->url().SchemeIs(url::kHttpScheme)) {
scheduler_->OnReceivedSpdyProxiedHttpResponse(
info->GetChildID(), info->GetRouteID());
}
if (request->response_info().async_revalidation_required) {
DCHECK(async_revalidation_manager_);
async_revalidation_manager_->BeginAsyncRevalidation(*request,
scheduler_.get());
}
int render_process_id, render_frame_host;
if (!info->GetAssociatedRenderFrame(&render_process_id, &render_frame_host))
return;
// Don't notify WebContents observers for requests known to be
// downloads; they aren't really associated with the Webcontents.
// Note that not all downloads are known before content sniffing.
if (info->IsDownload())
return;
// Notify the observers on the UI thread.
scoped_ptr<ResourceRequestDetails> detail(new ResourceRequestDetails(
request, GetCertID(request, info->GetChildID())));
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(
&NotifyResponseOnUI,
render_process_id, render_frame_host, base::Passed(&detail)));
}
void ResourceDispatcherHostImpl::DidFinishLoading(ResourceLoader* loader) {
ResourceRequestInfoImpl* info = loader->GetRequestInfo();
// Record final result of all resource loads.
if (info->GetResourceType() == RESOURCE_TYPE_MAIN_FRAME) {
// This enumeration has "3" appended to its name to distinguish it from
// older versions.
UMA_HISTOGRAM_SPARSE_SLOWLY(
"Net.ErrorCodesForMainFrame3",
-loader->request()->status().error());
// Record time to success and error for the most common errors, and for
// the aggregate remainder errors.
base::TimeDelta request_loading_time(
base::TimeTicks::Now() - loader->request()->creation_time());
switch (loader->request()->status().error()) {
case net::OK:
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.Success", request_loading_time);
break;
case net::ERR_ABORTED:
UMA_HISTOGRAM_CUSTOM_COUNTS("Net.ErrAborted.SentBytes",
loader->request()->GetTotalSentBytes(), 1,
50000000, 50);
UMA_HISTOGRAM_CUSTOM_COUNTS("Net.ErrAborted.ReceivedBytes",
loader->request()->GetTotalReceivedBytes(),
1, 50000000, 50);
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.ErrAborted", request_loading_time);
break;
case net::ERR_CONNECTION_RESET:
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.ErrConnectionReset", request_loading_time);
break;
case net::ERR_CONNECTION_TIMED_OUT:
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.ErrConnectionTimedOut", request_loading_time);
break;
case net::ERR_INTERNET_DISCONNECTED:
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.ErrInternetDisconnected", request_loading_time);
break;
case net::ERR_NAME_NOT_RESOLVED:
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.ErrNameNotResolved", request_loading_time);
break;
case net::ERR_TIMED_OUT:
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.ErrTimedOut", request_loading_time);
break;
default:
UMA_HISTOGRAM_LONG_TIMES(
"Net.RequestTime2.MiscError", request_loading_time);
break;
}
if (loader->request()->url().SchemeIsCryptographic()) {
if (loader->request()->url().host() == "www.google.com") {
UMA_HISTOGRAM_SPARSE_SLOWLY("Net.ErrorCodesForHTTPSGoogleMainFrame2",
-loader->request()->status().error());
}
int num_valid_scts = std::count_if(
loader->request()->ssl_info().signed_certificate_timestamps.begin(),
loader->request()->ssl_info().signed_certificate_timestamps.end(),
IsValidatedSCT);
UMA_HISTOGRAM_COUNTS_100(
"Net.CertificateTransparency.MainFrameValidSCTCount", num_valid_scts);
}
} else {
if (info->GetResourceType() == RESOURCE_TYPE_IMAGE) {
UMA_HISTOGRAM_SPARSE_SLOWLY(
"Net.ErrorCodesForImages",
-loader->request()->status().error());
}
// This enumeration has "2" appended to distinguish it from older versions.
UMA_HISTOGRAM_SPARSE_SLOWLY(
"Net.ErrorCodesForSubresources2",
-loader->request()->status().error());
}
if (loader->request()->url().SchemeIsCryptographic()) {
RecordCertificateHistograms(loader->request()->ssl_info(),
info->GetResourceType());
}
if (delegate_)
delegate_->RequestComplete(loader->request());
// Destroy the ResourceLoader.
RemovePendingRequest(info->GetChildID(), info->GetRequestID());
}
void ResourceDispatcherHostImpl::OnInit() {
scheduler_.reset(new ResourceScheduler);
}
void ResourceDispatcherHostImpl::OnShutdown() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
is_shutdown_ = true;
pending_loaders_.clear();
// Make sure we shutdown the timer now, otherwise by the time our destructor
// runs if the timer is still running the Task is deleted twice (once by
// the MessageLoop and the second time by RepeatingTimer).
update_load_states_timer_.reset();
// Clear blocked requests if any left.
// Note that we have to do this in 2 passes as we cannot call
// CancelBlockedRequestsForRoute while iterating over
// blocked_loaders_map_, as it modifies it.
std::set<GlobalRoutingID> ids;
for (BlockedLoadersMap::const_iterator iter = blocked_loaders_map_.begin();
iter != blocked_loaders_map_.end(); ++iter) {
std::pair<std::set<GlobalRoutingID>::iterator, bool> result =
ids.insert(iter->first);
// We should not have duplicates.
DCHECK(result.second);
}
for (std::set<GlobalRoutingID>::const_iterator iter = ids.begin();
iter != ids.end(); ++iter) {
CancelBlockedRequestsForRoute(iter->child_id, iter->route_id);
}
scheduler_.reset();
}
bool ResourceDispatcherHostImpl::OnMessageReceived(
const IPC::Message& message,
ResourceMessageFilter* filter) {
filter_ = filter;
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ResourceDispatcherHostImpl, message)
IPC_MESSAGE_HANDLER(ResourceHostMsg_RequestResource, OnRequestResource)
IPC_MESSAGE_HANDLER_DELAY_REPLY(ResourceHostMsg_SyncLoad, OnSyncLoad)
IPC_MESSAGE_HANDLER(ResourceHostMsg_ReleaseDownloadedFile,
OnReleaseDownloadedFile)
IPC_MESSAGE_HANDLER(ResourceHostMsg_DataDownloaded_ACK, OnDataDownloadedACK)
IPC_MESSAGE_HANDLER(ResourceHostMsg_CancelRequest, OnCancelRequest)
IPC_MESSAGE_HANDLER(ResourceHostMsg_DidChangePriority, OnDidChangePriority)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
if (!handled && IPC_MESSAGE_ID_CLASS(message.type()) == ResourceMsgStart) {
base::PickleIterator iter(message);
int request_id = -1;
bool ok = iter.ReadInt(&request_id);
DCHECK(ok);
GlobalRequestID id(filter_->child_id(), request_id);
DelegateMap::iterator it = delegate_map_.find(id);
if (it != delegate_map_.end()) {
base::ObserverList<ResourceMessageDelegate>::Iterator del_it(it->second);
ResourceMessageDelegate* delegate;
while (!handled && (delegate = del_it.GetNext()) != NULL) {
handled = delegate->OnMessageReceived(message);
}
}
// As the unhandled resource message effectively has no consumer, mark it as
// handled to prevent needless propagation through the filter pipeline.
handled = true;
}
filter_ = NULL;
return handled;
}
void ResourceDispatcherHostImpl::OnRequestResource(
int routing_id,
int request_id,
const ResourceHostMsg_Request& request_data) {
// TODO(pkasting): Remove ScopedTracker below once crbug.com/477117 is fixed.
tracked_objects::ScopedTracker tracking_profile(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"477117 ResourceDispatcherHostImpl::OnRequestResource"));
// When logging time-to-network only care about main frame and non-transfer
// navigations.
if (request_data.resource_type == RESOURCE_TYPE_MAIN_FRAME &&
request_data.transferred_request_request_id == -1 &&
!IsBrowserSideNavigationEnabled()) {
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&LogResourceRequestTimeOnUI,
TimeTicks::Now(),
filter_->child_id(),
request_data.render_frame_id,
request_data.url));
}
BeginRequest(request_id, request_data, NULL, routing_id);
}
// Begins a resource request with the given params on behalf of the specified
// child process. Responses will be dispatched through the given receiver. The
// process ID is used to lookup WebContentsImpl from routing_id's in the case of
// a request from a renderer. request_context is the cookie/cache context to be
// used for this request.
//
// If sync_result is non-null, then a SyncLoad reply will be generated, else
// a normal asynchronous set of response messages will be generated.
void ResourceDispatcherHostImpl::OnSyncLoad(
int request_id,
const ResourceHostMsg_Request& request_data,
IPC::Message* sync_result) {
BeginRequest(request_id, request_data, sync_result,
sync_result->routing_id());
}
void ResourceDispatcherHostImpl::UpdateRequestForTransfer(
int child_id,
int route_id,
int request_id,
const ResourceHostMsg_Request& request_data,
const linked_ptr<ResourceLoader>& loader) {
ResourceRequestInfoImpl* info = loader->GetRequestInfo();
GlobalRoutingID old_routing_id(
request_data.transferred_request_child_id, info->GetRouteID());
GlobalRequestID old_request_id(request_data.transferred_request_child_id,
request_data.transferred_request_request_id);
GlobalRoutingID new_routing_id(child_id, route_id);
GlobalRequestID new_request_id(child_id, request_id);
// Clear out data that depends on |info| before updating it.
// We always need to move the memory stats to the new process. In contrast,
// stats.num_requests is only tracked for some requests (those that require
// file descriptors for their shared memory buffer).
IncrementOutstandingRequestsMemory(-1, *info);
bool should_update_count = info->counted_as_in_flight_request();
if (should_update_count)
IncrementOutstandingRequestsCount(-1, info);
pending_loaders_.erase(old_request_id);
// ResourceHandlers should always get state related to the request from the
// ResourceRequestInfo rather than caching it locally. This lets us update
// the info object when a transfer occurs.
info->UpdateForTransfer(child_id, route_id, request_data.origin_pid,
request_id, request_data.parent_render_frame_id,
filter_->GetWeakPtr());
// Update maps that used the old IDs, if necessary. Some transfers in tests
// do not actually use a different ID, so not all maps need to be updated.
pending_loaders_[new_request_id] = loader;
IncrementOutstandingRequestsMemory(1, *info);
if (should_update_count)
IncrementOutstandingRequestsCount(1, info);
if (old_routing_id != new_routing_id) {
if (blocked_loaders_map_.find(old_routing_id) !=
blocked_loaders_map_.end()) {
blocked_loaders_map_[new_routing_id] =
blocked_loaders_map_[old_routing_id];
blocked_loaders_map_.erase(old_routing_id);
}
}
if (old_request_id != new_request_id) {
DelegateMap::iterator it = delegate_map_.find(old_request_id);
if (it != delegate_map_.end()) {
// Tell each delegate that the request ID has changed.
base::ObserverList<ResourceMessageDelegate>::Iterator del_it(it->second);
ResourceMessageDelegate* delegate;
while ((delegate = del_it.GetNext()) != NULL) {
delegate->set_request_id(new_request_id);
}
// Now store the observer list under the new request ID.
delegate_map_[new_request_id] = delegate_map_[old_request_id];
delegate_map_.erase(old_request_id);
}
}
AppCacheInterceptor::CompleteCrossSiteTransfer(
loader->request(),
child_id,
request_data.appcache_host_id);
ServiceWorkerRequestHandler* handler =
ServiceWorkerRequestHandler::GetHandler(loader->request());
if (handler) {
handler->CompleteCrossSiteTransfer(
child_id, request_data.service_worker_provider_id);
}
// We should have a CrossSiteResourceHandler to finish the transfer.
DCHECK(info->cross_site_handler());
}
void ResourceDispatcherHostImpl::BeginRequest(
int request_id,
const ResourceHostMsg_Request& request_data,
IPC::Message* sync_result, // only valid for sync
int route_id) {
int process_type = filter_->process_type();
int child_id = filter_->child_id();
// PlzNavigate: reject invalid renderer main resource request.
if (IsBrowserSideNavigationEnabled() &&
IsResourceTypeFrame(request_data.resource_type) &&
!request_data.url.SchemeIs(url::kBlobScheme)) {
bad_message::ReceivedBadMessage(filter_, bad_message::RDH_INVALID_URL);
return;
}
// Reject invalid priority.
if (request_data.priority < net::MINIMUM_PRIORITY ||
request_data.priority > net::MAXIMUM_PRIORITY) {
bad_message::ReceivedBadMessage(filter_, bad_message::RDH_INVALID_PRIORITY);
return;
}
// If we crash here, figure out what URL the renderer was requesting.
// http://crbug.com/91398
char url_buf[128];
base::strlcpy(url_buf, request_data.url.spec().c_str(), arraysize(url_buf));
base::debug::Alias(url_buf);
// If the request that's coming in is being transferred from another process,
// we want to reuse and resume the old loader rather than start a new one.
LoaderMap::iterator it = pending_loaders_.find(
GlobalRequestID(request_data.transferred_request_child_id,
request_data.transferred_request_request_id));
if (it != pending_loaders_.end()) {
// If the request is transferring to a new process, we can update our
// state and let it resume with its existing ResourceHandlers.
if (it->second->is_transferring()) {
linked_ptr<ResourceLoader> deferred_loader = it->second;
UpdateRequestForTransfer(child_id, route_id, request_id,
request_data, deferred_loader);
deferred_loader->CompleteTransfer();
} else {
bad_message::ReceivedBadMessage(
filter_, bad_message::RDH_REQUEST_NOT_TRANSFERRING);
}
return;
}
ResourceContext* resource_context = NULL;
net::URLRequestContext* request_context = NULL;
filter_->GetContexts(request_data.resource_type, request_data.origin_pid,
&resource_context, &request_context);
// http://crbug.com/90971
CHECK(ContainsKey(active_resource_contexts_, resource_context));
// Parse the headers before calling ShouldServiceRequest, so that they are
// available to be validated.
net::HttpRequestHeaders headers;
headers.AddHeadersFromString(request_data.headers);
if (is_shutdown_ ||
!ShouldServiceRequest(process_type, child_id, request_data, headers,
filter_, resource_context)) {
AbortRequestBeforeItStarts(filter_, sync_result, request_id);
return;
}
// Allow the observer to block/handle the request.
if (delegate_ && !delegate_->ShouldBeginRequest(request_data.method,
request_data.url,
request_data.resource_type,
resource_context)) {
AbortRequestBeforeItStarts(filter_, sync_result, request_id);
return;
}
// Construct the request.
scoped_ptr<net::URLRequest> new_request = request_context->CreateRequest(
request_data.url, request_data.priority, NULL);
new_request->set_method(request_data.method);
new_request->set_first_party_for_cookies(
request_data.first_party_for_cookies);
// If the request is a MAIN_FRAME request, the first-party URL gets updated on
// redirects.
if (request_data.resource_type == RESOURCE_TYPE_MAIN_FRAME) {
new_request->set_first_party_url_policy(
net::URLRequest::UPDATE_FIRST_PARTY_URL_ON_REDIRECT);
}
const Referrer referrer(request_data.referrer, request_data.referrer_policy);
SetReferrerForRequest(new_request.get(), referrer);
new_request->SetExtraRequestHeaders(headers);
storage::BlobStorageContext* blob_context =
GetBlobStorageContext(filter_->blob_storage_context());
// Resolve elements from request_body and prepare upload data.
if (request_data.request_body.get()) {
// |blob_context| could be null when the request is from the plugins because
// ResourceMessageFilters created in PluginProcessHost don't have the blob
// context.
if (blob_context) {
// Attaches the BlobDataHandles to request_body not to free the blobs and
// any attached shareable files until upload completion. These data will
// be used in UploadDataStream and ServiceWorkerURLRequestJob.
AttachRequestBodyBlobDataHandles(
request_data.request_body.get(),
blob_context);
}
new_request->set_upload(UploadDataStreamBuilder::Build(
request_data.request_body.get(),
blob_context,
filter_->file_system_context(),
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE)
.get()));
}
bool allow_download = request_data.allow_download &&
IsResourceTypeFrame(request_data.resource_type);
bool do_not_prompt_for_login = request_data.do_not_prompt_for_login;
bool is_sync_load = sync_result != NULL;
// Raw headers are sensitive, as they include Cookie/Set-Cookie, so only
// allow requesting them if requester has ReadRawCookies permission.
ChildProcessSecurityPolicyImpl* policy =
ChildProcessSecurityPolicyImpl::GetInstance();
bool report_raw_headers = request_data.report_raw_headers;
if (report_raw_headers && !policy->CanReadRawCookies(child_id)) {
// TODO: crbug.com/523063 can we call bad_message::ReceivedBadMessage here?
VLOG(1) << "Denied unauthorized request for raw headers";
report_raw_headers = false;
}
int load_flags =
BuildLoadFlagsForRequest(request_data, child_id, is_sync_load);
if (request_data.resource_type == RESOURCE_TYPE_PREFETCH ||
request_data.resource_type == RESOURCE_TYPE_FAVICON) {
do_not_prompt_for_login = true;
}
if (request_data.resource_type == RESOURCE_TYPE_IMAGE &&
HTTP_AUTH_RELATION_BLOCKED_CROSS ==
HttpAuthRelationTypeOf(request_data.url,
request_data.first_party_for_cookies)) {
// Prevent third-party image content from prompting for login, as this
// is often a scam to extract credentials for another domain from the user.
// Only block image loads, as the attack applies largely to the "src"
// property of the <img> tag. It is common for web properties to allow
// untrusted values for <img src>; this is considered a fair thing for an
// HTML sanitizer to do. Conversely, any HTML sanitizer that didn't
// filter sources for <script>, <link>, <embed>, <object>, <iframe> tags
// would be considered vulnerable in and of itself.
do_not_prompt_for_login = true;
load_flags |= net::LOAD_DO_NOT_USE_EMBEDDED_IDENTITY;
}
bool support_async_revalidation =
!is_sync_load && async_revalidation_manager_ &&
AsyncRevalidationManager::QualifiesForAsyncRevalidation(request_data);
if (support_async_revalidation)
load_flags |= net::LOAD_SUPPORT_ASYNC_REVALIDATION;
// Sync loads should have maximum priority and should be the only
// requets that have the ignore limits flag set.
if (is_sync_load) {
DCHECK_EQ(request_data.priority, net::MAXIMUM_PRIORITY);
DCHECK_NE(load_flags & net::LOAD_IGNORE_LIMITS, 0);
} else {
DCHECK_EQ(load_flags & net::LOAD_IGNORE_LIMITS, 0);
}
new_request->SetLoadFlags(load_flags);
// Make extra info and read footer (contains request ID).
ResourceRequestInfoImpl* extra_info = new ResourceRequestInfoImpl(
process_type, child_id, route_id,
-1, // frame_tree_node_id
request_data.origin_pid,
request_id,
request_data.render_frame_id,
request_data.is_main_frame,
request_data.parent_is_main_frame,
request_data.parent_render_frame_id,
request_data.resource_type,
request_data.transition_type,
request_data.should_replace_current_entry,
false, // is download
false, // is stream
allow_download,
request_data.has_user_gesture,
request_data.enable_load_timing,
request_data.enable_upload_progress,
do_not_prompt_for_login,
request_data.referrer_policy,
request_data.visiblity_state,
resource_context, filter_->GetWeakPtr(),
report_raw_headers,
!is_sync_load,
IsUsingLoFi(request_data.lofi_state, delegate_,
*new_request, resource_context),
support_async_revalidation ? request_data.headers : std::string());
// Request takes ownership.
extra_info->AssociateWithRequest(new_request.get());
if (new_request->url().SchemeIs(url::kBlobScheme)) {
// Hang on to a reference to ensure the blob is not released prior
// to the job being started.
storage::BlobProtocolHandler::SetRequestedBlobDataHandle(
new_request.get(),
filter_->blob_storage_context()->context()->GetBlobDataFromPublicURL(
new_request->url()));
}
// Initialize the service worker handler for the request. We don't use
// ServiceWorker for synchronous loads to avoid renderer deadlocks.
const bool should_skip_service_worker =
request_data.skip_service_worker || is_sync_load;
ServiceWorkerRequestHandler::InitializeHandler(
new_request.get(), filter_->service_worker_context(), blob_context,
child_id, request_data.service_worker_provider_id,
should_skip_service_worker,
request_data.fetch_request_mode, request_data.fetch_credentials_mode,
request_data.fetch_redirect_mode, request_data.resource_type,
request_data.fetch_request_context_type, request_data.fetch_frame_type,
request_data.request_body);
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableExperimentalWebPlatformFeatures)) {
ForeignFetchRequestHandler::InitializeHandler(
new_request.get(), filter_->service_worker_context(), blob_context,
child_id, request_data.service_worker_provider_id,
should_skip_service_worker,
request_data.fetch_request_mode, request_data.fetch_credentials_mode,
request_data.fetch_redirect_mode, request_data.resource_type,
request_data.fetch_request_context_type, request_data.fetch_frame_type,
request_data.request_body);
}
// Have the appcache associate its extra info with the request.
AppCacheInterceptor::SetExtraRequestInfo(
new_request.get(), filter_->appcache_service(), child_id,
request_data.appcache_host_id, request_data.resource_type,
request_data.should_reset_appcache);
scoped_ptr<ResourceHandler> handler(
CreateResourceHandler(
new_request.get(),
request_data, sync_result, route_id, process_type, child_id,
resource_context));
if (handler)
BeginRequestInternal(new_request.Pass(), handler.Pass());
}
scoped_ptr<ResourceHandler> ResourceDispatcherHostImpl::CreateResourceHandler(
net::URLRequest* request,
const ResourceHostMsg_Request& request_data,
IPC::Message* sync_result,
int route_id,
int process_type,
int child_id,
ResourceContext* resource_context) {
// TODO(pkasting): Remove ScopedTracker below once crbug.com/456331 is fixed.
tracked_objects::ScopedTracker tracking_profile(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"456331 ResourceDispatcherHostImpl::CreateResourceHandler"));
// Construct the IPC resource handler.
scoped_ptr<ResourceHandler> handler;
if (sync_result) {
// download_to_file is not supported for synchronous requests.
if (request_data.download_to_file) {
bad_message::ReceivedBadMessage(filter_, bad_message::RDH_BAD_DOWNLOAD);
return scoped_ptr<ResourceHandler>();
}
handler.reset(new SyncResourceHandler(request, sync_result, this));
} else {
handler.reset(new AsyncResourceHandler(request, this));
// The RedirectToFileResourceHandler depends on being next in the chain.
if (request_data.download_to_file) {
handler.reset(
new RedirectToFileResourceHandler(handler.Pass(), request));
}
}
// Prefetches and <a ping> requests outlive their child process.
if (!sync_result && IsDetachableResourceType(request_data.resource_type)) {
handler.reset(new DetachableResourceHandler(
request,
base::TimeDelta::FromMilliseconds(kDefaultDetachableCancelDelayMs),
handler.Pass()));
}
// PlzNavigate: If using --enable-browser-side-navigation, the
// CrossSiteResourceHandler is not needed. This codepath is not used for the
// actual navigation request, but only the subsequent blob URL load. This does
// not require request transfers.
if (!IsBrowserSideNavigationEnabled()) {
// Install a CrossSiteResourceHandler for all main frame requests. This will
// check whether a transfer is required and, if so, pause for the UI thread
// to drive the transfer.
bool is_swappable_navigation =
request_data.resource_type == RESOURCE_TYPE_MAIN_FRAME;
// If out-of-process iframes are possible, then all subframe requests need
// to go through the CrossSiteResourceHandler to enforce the site isolation
// policy.
if (!is_swappable_navigation &&
SiteIsolationPolicy::AreCrossProcessFramesPossible()) {
is_swappable_navigation =
request_data.resource_type == RESOURCE_TYPE_SUB_FRAME;
}
if (is_swappable_navigation && process_type == PROCESS_TYPE_RENDERER)
handler.reset(new CrossSiteResourceHandler(handler.Pass(), request));
}
return AddStandardHandlers(request, request_data.resource_type,
resource_context, filter_->appcache_service(),
child_id, route_id, handler.Pass());
}
scoped_ptr<ResourceHandler> ResourceDispatcherHostImpl::AddStandardHandlers(
net::URLRequest* request,
ResourceType resource_type,
ResourceContext* resource_context,
AppCacheService* appcache_service,
int child_id,
int route_id,
scoped_ptr<ResourceHandler> handler) {
// PlzNavigate: do not add ResourceThrottles for main resource requests from
// the renderer. Decisions about the navigation should have been done in the
// initial request.
if (IsBrowserSideNavigationEnabled() && IsResourceTypeFrame(resource_type) &&
child_id != -1) {
DCHECK(request->url().SchemeIs(url::kBlobScheme));
return handler.Pass();
}
PluginService* plugin_service = nullptr;
#if defined(ENABLE_PLUGINS)
plugin_service = PluginService::GetInstance();
#endif
// Insert a buffered event handler before the actual one.
handler.reset(new MimeTypeResourceHandler(handler.Pass(), this,
plugin_service, request));
ScopedVector<ResourceThrottle> throttles;
// Add a NavigationResourceThrottle for navigations.
// PlzNavigate: the throttle is unnecessary as communication with the UI
// thread is handled by the NavigationURLloader.
if (!IsBrowserSideNavigationEnabled() && IsResourceTypeFrame(resource_type))
throttles.push_back(new NavigationResourceThrottle(request));
if (delegate_) {
delegate_->RequestBeginning(request,
resource_context,
appcache_service,
resource_type,
&throttles);
}
if (request->has_upload()) {
// Block power save while uploading data.
throttles.push_back(new PowerSaveBlockResourceThrottle());
}
// TODO(ricea): Stop looking this up so much.
ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
throttles.push_back(scheduler_->ScheduleRequest(child_id, route_id,
info->IsAsync(), request));
handler.reset(
new ThrottlingResourceHandler(handler.Pass(), request, throttles.Pass()));
return handler.Pass();
}
void ResourceDispatcherHostImpl::OnReleaseDownloadedFile(int request_id) {
UnregisterDownloadedTempFile(filter_->child_id(), request_id);
}
void ResourceDispatcherHostImpl::OnDidChangePriority(
int request_id,
net::RequestPriority new_priority,
int intra_priority_value) {
ResourceLoader* loader = GetLoader(filter_->child_id(), request_id);
// The request may go away before processing this message, so |loader| can
// legitimately be null.
if (!loader)
return;
scheduler_->ReprioritizeRequest(loader->request(), new_priority,
intra_priority_value);
}
void ResourceDispatcherHostImpl::OnDataDownloadedACK(int request_id) {
// TODO(michaeln): maybe throttle DataDownloaded messages
}
void ResourceDispatcherHostImpl::RegisterDownloadedTempFile(
int child_id, int request_id, const base::FilePath& file_path) {
scoped_refptr<ShareableFileReference> reference =
ShareableFileReference::Get(file_path);
DCHECK(reference.get());
registered_temp_files_[child_id][request_id] = reference;
ChildProcessSecurityPolicyImpl::GetInstance()->GrantReadFile(
child_id, reference->path());
// When the temp file is deleted, revoke permissions that the renderer has
// to that file. This covers an edge case where the file is deleted and then
// the same name is re-used for some other purpose, we don't want the old
// renderer to still have access to it.
//
// We do this when the file is deleted because the renderer can take a blob
// reference to the temp file that outlives the url loaded that it was
// loaded with to keep the file (and permissions) alive.
reference->AddFinalReleaseCallback(
base::Bind(&RemoveDownloadFileFromChildSecurityPolicy,
child_id));
}
void ResourceDispatcherHostImpl::UnregisterDownloadedTempFile(
int child_id, int request_id) {
DeletableFilesMap& map = registered_temp_files_[child_id];
DeletableFilesMap::iterator found = map.find(request_id);
if (found == map.end())
return;
map.erase(found);
// Note that we don't remove the security bits here. This will be done
// when all file refs are deleted (see RegisterDownloadedTempFile).
}
bool ResourceDispatcherHostImpl::Send(IPC::Message* message) {
delete message;
return false;
}
// Note that this cancel is subtly different from the other
// CancelRequest methods in this file, which also tear down the loader.
void ResourceDispatcherHostImpl::OnCancelRequest(int request_id) {
int child_id = filter_->child_id();
// When the old renderer dies, it sends a message to us to cancel its
// requests.
if (IsTransferredNavigation(GlobalRequestID(child_id, request_id)))
return;
ResourceLoader* loader = GetLoader(child_id, request_id);
if (!loader) {
// We probably want to remove this warning eventually, but I wanted to be
// able to notice when this happens during initial development since it
// should be rare and may indicate a bug.
DVLOG(1) << "Canceling a request that wasn't found";
return;
}
loader->CancelRequest(true);
}
ResourceRequestInfoImpl* ResourceDispatcherHostImpl::CreateRequestInfo(
int child_id,
int render_view_route_id,
int render_frame_route_id,
bool download,
ResourceContext* context) {
return new ResourceRequestInfoImpl(
PROCESS_TYPE_RENDERER,
child_id,
render_view_route_id,
-1, // frame_tree_node_id
0,
request_id_,
render_frame_route_id,
false, // is_main_frame
false, // parent_is_main_frame
-1, // parent_render_frame_id
RESOURCE_TYPE_SUB_RESOURCE,
ui::PAGE_TRANSITION_LINK,
false, // should_replace_current_entry
download, // is_download
false, // is_stream
download, // allow_download
false, // has_user_gesture
false, // enable_load_timing
false, // enable_upload_progress
false, // do_not_prompt_for_login
blink::WebReferrerPolicyDefault,
blink::WebPageVisibilityStateVisible,
context,
base::WeakPtr<ResourceMessageFilter>(), // filter
false, // report_raw_headers
true, // is_async
false, // is_using_lofi
std::string()); // original_headers
}
void ResourceDispatcherHostImpl::OnRenderViewHostCreated(int child_id,
int route_id,
bool is_visible,
bool is_audible) {
scheduler_->OnClientCreated(child_id, route_id, is_visible, is_audible);
}
void ResourceDispatcherHostImpl::OnRenderViewHostDeleted(
int child_id,
int route_id) {
scheduler_->OnClientDeleted(child_id, route_id);
CancelRequestsForRoute(child_id, route_id);
}
void ResourceDispatcherHostImpl::OnRenderViewHostSetIsLoading(int child_id,
int route_id,
bool is_loading) {
scheduler_->OnLoadingStateChanged(child_id, route_id, !is_loading);
}
void ResourceDispatcherHostImpl::OnRenderViewHostWasHidden(
int child_id,
int route_id) {
scheduler_->OnVisibilityChanged(child_id, route_id, false);
}
void ResourceDispatcherHostImpl::OnRenderViewHostWasShown(
int child_id,
int route_id) {
scheduler_->OnVisibilityChanged(child_id, route_id, true);
}
void ResourceDispatcherHostImpl::OnAudioRenderHostStreamStateChanged(
int child_id,
int route_id,
bool is_playing) {
// The ResourceDispatcherHost may have already been shut down.
// See http://crbug.com/455098
if (!scheduler_)
return;
scheduler_->OnAudibilityChanged(child_id, route_id, is_playing);
}
// This function is only used for saving feature.
void ResourceDispatcherHostImpl::BeginSaveFile(const GURL& url,
const Referrer& referrer,
int save_item_id,
int save_package_id,
int child_id,
int render_view_route_id,
int render_frame_route_id,
ResourceContext* context) {
if (is_shutdown_)
return;
// http://crbug.com/90971
char url_buf[128];
base::strlcpy(url_buf, url.spec().c_str(), arraysize(url_buf));
base::debug::Alias(url_buf);
CHECK(ContainsKey(active_resource_contexts_, context));
request_id_--;
const net::URLRequestContext* request_context = context->GetRequestContext();
bool known_proto =
request_context->job_factory()->IsHandledURL(url);
if (!known_proto) {
// Since any URLs which have non-standard scheme have been filtered
// by save manager(see GURL::SchemeIsStandard). This situation
// should not happen.
NOTREACHED();
return;
}
scoped_ptr<net::URLRequest> request(
request_context->CreateRequest(url, net::DEFAULT_PRIORITY, NULL));
request->set_method("GET");
SetReferrerForRequest(request.get(), referrer);
// So far, for saving page, we need fetch content from cache, in the
// future, maybe we can use a configuration to configure this behavior.
request->SetLoadFlags(net::LOAD_PREFERRING_CACHE);
// Since we're just saving some resources we need, disallow downloading.
ResourceRequestInfoImpl* extra_info =
CreateRequestInfo(child_id, render_view_route_id,
render_frame_route_id, false, context);
extra_info->AssociateWithRequest(request.get()); // Request takes ownership.
scoped_ptr<ResourceHandler> handler(new SaveFileResourceHandler(
request.get(), save_item_id, save_package_id, child_id,
render_frame_route_id, url, save_file_manager_.get()));
BeginRequestInternal(request.Pass(), handler.Pass());
}
void ResourceDispatcherHostImpl::MarkAsTransferredNavigation(
const GlobalRequestID& id) {
GetLoader(id)->MarkAsTransferring();
}
void ResourceDispatcherHostImpl::CancelTransferringNavigation(
const GlobalRequestID& id) {
// Request should still exist and be in the middle of a transfer.
DCHECK(IsTransferredNavigation(id));
RemovePendingRequest(id.child_id, id.request_id);
}
void ResourceDispatcherHostImpl::ResumeDeferredNavigation(
const GlobalRequestID& id) {
ResourceLoader* loader = GetLoader(id);
// The response we were meant to resume could have already been canceled.
if (loader)
loader->CompleteTransfer();
}
// The object died, so cancel and detach all requests associated with it except
// for downloads and detachable resources, which belong to the browser process
// even if initiated via a renderer.
void ResourceDispatcherHostImpl::CancelRequestsForProcess(int child_id) {
CancelRequestsForRoute(child_id, -1 /* cancel all */);
registered_temp_files_.erase(child_id);
}
void ResourceDispatcherHostImpl::CancelRequestsForRoute(int child_id,
int route_id) {
// Since pending_requests_ is a map, we first build up a list of all of the
// matching requests to be cancelled, and then we cancel them. Since there
// may be more than one request to cancel, we cannot simply hold onto the map
// iterators found in the first loop.
// Find the global ID of all matching elements.
bool any_requests_transferring = false;
std::vector<GlobalRequestID> matching_requests;
for (LoaderMap::const_iterator i = pending_loaders_.begin();
i != pending_loaders_.end(); ++i) {
if (i->first.child_id != child_id)
continue;
ResourceRequestInfoImpl* info = i->second->GetRequestInfo();
GlobalRequestID id(child_id, i->first.request_id);
DCHECK(id == i->first);
// Don't cancel navigations that are expected to live beyond this process.
if (IsTransferredNavigation(id))
any_requests_transferring = true;
if (info->detachable_handler()) {
info->detachable_handler()->Detach();
} else if (!info->IsDownload() && !info->is_stream() &&
!IsTransferredNavigation(id) &&
(route_id == -1 || route_id == info->GetRouteID())) {
matching_requests.push_back(id);
}
}
// Remove matches.
for (size_t i = 0; i < matching_requests.size(); ++i) {
LoaderMap::iterator iter = pending_loaders_.find(matching_requests[i]);
// Although every matching request was in pending_requests_ when we built
// matching_requests, it is normal for a matching request to be not found
// in pending_requests_ after we have removed some matching requests from
// pending_requests_. For example, deleting a net::URLRequest that has
// exclusive (write) access to an HTTP cache entry may unblock another
// net::URLRequest that needs exclusive access to the same cache entry, and
// that net::URLRequest may complete and remove itself from
// pending_requests_. So we need to check that iter is not equal to
// pending_requests_.end().
if (iter != pending_loaders_.end())
RemovePendingLoader(iter);
}
// Don't clear the blocked loaders or offline policy maps if any of the
// requests in route_id are being transferred to a new process, since those
// maps will be updated with the new route_id after the transfer. Otherwise
// we will lose track of this info when the old route goes away, before the
// new one is created.
if (any_requests_transferring)
return;
// Now deal with blocked requests if any.
if (route_id != -1) {
if (blocked_loaders_map_.find(GlobalRoutingID(child_id, route_id)) !=
blocked_loaders_map_.end()) {
CancelBlockedRequestsForRoute(child_id, route_id);
}
} else {
// We have to do all render views for the process |child_id|.
// Note that we have to do this in 2 passes as we cannot call
// CancelBlockedRequestsForRoute while iterating over
// blocked_loaders_map_, as it modifies it.
std::set<int> route_ids;
for (BlockedLoadersMap::const_iterator iter = blocked_loaders_map_.begin();
iter != blocked_loaders_map_.end(); ++iter) {
if (iter->first.child_id == child_id)
route_ids.insert(iter->first.route_id);
}
for (std::set<int>::const_iterator iter = route_ids.begin();
iter != route_ids.end(); ++iter) {
CancelBlockedRequestsForRoute(child_id, *iter);
}
}
}
// Cancels the request and removes it from the list.
void ResourceDispatcherHostImpl::RemovePendingRequest(int child_id,
int request_id) {
LoaderMap::iterator i = pending_loaders_.find(
GlobalRequestID(child_id, request_id));
if (i == pending_loaders_.end()) {
NOTREACHED() << "Trying to remove a request that's not here";
return;
}
RemovePendingLoader(i);
}
void ResourceDispatcherHostImpl::RemovePendingLoader(
const LoaderMap::iterator& iter) {
ResourceRequestInfoImpl* info = iter->second->GetRequestInfo();
// Remove the memory credit that we added when pushing the request onto
// the pending list.
IncrementOutstandingRequestsMemory(-1, *info);
pending_loaders_.erase(iter);
}
void ResourceDispatcherHostImpl::CancelRequest(int child_id,
int request_id) {
ResourceLoader* loader = GetLoader(child_id, request_id);
if (!loader) {
// We probably want to remove this warning eventually, but I wanted to be
// able to notice when this happens during initial development since it
// should be rare and may indicate a bug.
DVLOG(1) << "Canceling a request that wasn't found";
return;
}
RemovePendingRequest(child_id, request_id);
}
ResourceDispatcherHostImpl::OustandingRequestsStats
ResourceDispatcherHostImpl::GetOutstandingRequestsStats(
const ResourceRequestInfoImpl& info) {
OutstandingRequestsStatsMap::iterator entry =
outstanding_requests_stats_map_.find(info.GetChildID());
OustandingRequestsStats stats = { 0, 0 };
if (entry != outstanding_requests_stats_map_.end())
stats = entry->second;
return stats;
}
void ResourceDispatcherHostImpl::UpdateOutstandingRequestsStats(
const ResourceRequestInfoImpl& info,
const OustandingRequestsStats& stats) {
if (stats.memory_cost == 0 && stats.num_requests == 0)
outstanding_requests_stats_map_.erase(info.GetChildID());
else
outstanding_requests_stats_map_[info.GetChildID()] = stats;
}
ResourceDispatcherHostImpl::OustandingRequestsStats
ResourceDispatcherHostImpl::IncrementOutstandingRequestsMemory(
int count,
const ResourceRequestInfoImpl& info) {
DCHECK_EQ(1, abs(count));
// Retrieve the previous value (defaulting to 0 if not found).
OustandingRequestsStats stats = GetOutstandingRequestsStats(info);
// Insert/update the total; delete entries when their count reaches 0.
stats.memory_cost += count * info.memory_cost();
DCHECK_GE(stats.memory_cost, 0);
UpdateOutstandingRequestsStats(info, stats);
return stats;
}
ResourceDispatcherHostImpl::OustandingRequestsStats
ResourceDispatcherHostImpl::IncrementOutstandingRequestsCount(
int count,
ResourceRequestInfoImpl* info) {
DCHECK_EQ(1, abs(count));
num_in_flight_requests_ += count;
// Keep track of whether this request is counting toward the number of
// in-flight requests for this process, in case we need to transfer it to
// another process. This should be a toggle.
DCHECK_NE(info->counted_as_in_flight_request(), count > 0);
info->set_counted_as_in_flight_request(count > 0);
OustandingRequestsStats stats = GetOutstandingRequestsStats(*info);
stats.num_requests += count;
DCHECK_GE(stats.num_requests, 0);
UpdateOutstandingRequestsStats(*info, stats);
return stats;
}
bool ResourceDispatcherHostImpl::HasSufficientResourcesForRequest(
net::URLRequest* request) {
ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
OustandingRequestsStats stats = IncrementOutstandingRequestsCount(1, info);
if (stats.num_requests > max_num_in_flight_requests_per_process_)
return false;
if (num_in_flight_requests_ > max_num_in_flight_requests_)
return false;
return true;
}
void ResourceDispatcherHostImpl::FinishedWithResourcesForRequest(
net::URLRequest* request) {
ResourceRequestInfoImpl* info = ResourceRequestInfoImpl::ForRequest(request);
IncrementOutstandingRequestsCount(-1, info);
}
void ResourceDispatcherHostImpl::BeginNavigationRequest(
ResourceContext* resource_context,
const NavigationRequestInfo& info,
NavigationURLLoaderImplCore* loader,
ServiceWorkerNavigationHandleCore* service_worker_handle_core) {
// PlzNavigate: BeginNavigationRequest currently should only be used for the
// browser-side navigations project.
CHECK(IsBrowserSideNavigationEnabled());
ResourceType resource_type = info.is_main_frame ?
RESOURCE_TYPE_MAIN_FRAME : RESOURCE_TYPE_SUB_FRAME;
if (is_shutdown_ ||
// TODO(davidben): Check ShouldServiceRequest here. This is important; it
// needs to be checked relative to the child that /requested/ the
// navigation. It's where file upload checks, etc., come in.
(delegate_ && !delegate_->ShouldBeginRequest(
info.begin_params.method,
info.common_params.url,
resource_type,
resource_context))) {
loader->NotifyRequestFailed(false, net::ERR_ABORTED);
return;
}
// Save the URL on the stack to help catch URLRequests which outlive their
// URLRequestContexts. See https://crbug.com/90971
char url_buf[128];
base::strlcpy(
url_buf, info.common_params.url.spec().c_str(), arraysize(url_buf));
base::debug::Alias(url_buf);
CHECK(ContainsKey(active_resource_contexts_, resource_context));
const net::URLRequestContext* request_context =
resource_context->GetRequestContext();
int load_flags = info.begin_params.load_flags;
load_flags |= net::LOAD_VERIFY_EV_CERT;
if (info.is_main_frame)
load_flags |= net::LOAD_MAIN_FRAME;
// TODO(davidben): BuildLoadFlagsForRequest includes logic for
// CanSendCookiesForOrigin and CanReadRawCookies. Is this needed here?
// Sync loads should have maximum priority and should be the only
// requests that have the ignore limits flag set.
DCHECK(!(load_flags & net::LOAD_IGNORE_LIMITS));
scoped_ptr<net::URLRequest> new_request;
new_request = request_context->CreateRequest(
info.common_params.url, net::HIGHEST, nullptr);
new_request->set_method(info.begin_params.method);
new_request->set_first_party_for_cookies(
info.first_party_for_cookies);
if (info.is_main_frame) {
new_request->set_first_party_url_policy(
net::URLRequest::UPDATE_FIRST_PARTY_URL_ON_REDIRECT);
}
SetReferrerForRequest(new_request.get(), info.common_params.referrer);
net::HttpRequestHeaders headers;
headers.AddHeadersFromString(info.begin_params.headers);
new_request->SetExtraRequestHeaders(headers);
new_request->SetLoadFlags(load_flags);
storage::BlobStorageContext* blob_context = GetBlobStorageContext(
GetChromeBlobStorageContextForResourceContext(resource_context));
// Resolve elements from request_body and prepare upload data.
if (info.request_body.get()) {
AttachRequestBodyBlobDataHandles(
info.request_body.get(),
blob_context);
// TODO(davidben): The FileSystemContext is null here. In the case where
// another renderer requested this navigation, this should be the same
// FileSystemContext passed into ShouldServiceRequest.
new_request->set_upload(UploadDataStreamBuilder::Build(
info.request_body.get(),
blob_context,
nullptr, // file_system_context
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE)
.get()));
}
request_id_--;
// Make extra info and read footer (contains request ID).
//
// TODO(davidben): Associate the request with the FrameTreeNode and/or tab so
// that IO thread -> UI thread hops will work.
ResourceRequestInfoImpl* extra_info = new ResourceRequestInfoImpl(
PROCESS_TYPE_BROWSER,
-1, // child_id
-1, // route_id
info.frame_tree_node_id,
-1, // request_data.origin_pid,
request_id_,
-1, // request_data.render_frame_id,
info.is_main_frame, info.parent_is_main_frame,
-1, // request_data.parent_render_frame_id,
resource_type, info.common_params.transition,
// should_replace_current_entry. This was only maintained at layer for
// request transfers and isn't needed for browser-side navigations.
false,
false, // is download
false, // is stream
info.common_params.allow_download, info.begin_params.has_user_gesture,
true, // enable_load_timing
false, // enable_upload_progress
false, // do_not_prompt_for_login
info.common_params.referrer.policy,
// TODO(davidben): This is only used for prerenders. Replace
// is_showing with something for that. Or maybe it just comes from the
// same mechanism as the cookie one.
blink::WebPageVisibilityStateVisible, resource_context,
base::WeakPtr<ResourceMessageFilter>(), // filter
false, // request_data.report_raw_headers
true, // is_async
IsUsingLoFi(info.common_params.lofi_state, delegate_,
*new_request, resource_context),
// The original_headers field is for stale-while-revalidate but the
// feature doesn't work with PlzNavigate, so it's just a placeholder
// here.
// TODO(ricea): Make the feature work with stale-while-revalidate
// and clean this up.
std::string()); // original_headers
// Request takes ownership.
extra_info->AssociateWithRequest(new_request.get());
if (new_request->url().SchemeIs(url::kBlobScheme)) {
// Hang on to a reference to ensure the blob is not released prior
// to the job being started.
storage::BlobProtocolHandler::SetRequestedBlobDataHandle(
new_request.get(),
blob_context->GetBlobDataFromPublicURL(new_request->url()));
}
RequestContextFrameType frame_type =
info.is_main_frame ? REQUEST_CONTEXT_FRAME_TYPE_TOP_LEVEL
: REQUEST_CONTEXT_FRAME_TYPE_NESTED;
ServiceWorkerRequestHandler::InitializeForNavigation(
new_request.get(), service_worker_handle_core, blob_context,
info.begin_params.skip_service_worker, resource_type,
info.begin_params.request_context_type, frame_type, info.request_body);
// TODO(davidben): Attach AppCacheInterceptor.
scoped_ptr<ResourceHandler> handler(new NavigationResourceHandler(
new_request.get(), loader));
// TODO(davidben): Pass in the appropriate appcache_service. Also fix the
// dependency on child_id/route_id. Those are used by the ResourceScheduler;
// currently it's a no-op.
handler = AddStandardHandlers(new_request.get(), resource_type,
resource_context,
nullptr, // appcache_service
-1, // child_id
-1, // route_id
handler.Pass());
BeginRequestInternal(new_request.Pass(), handler.Pass());
}
void ResourceDispatcherHostImpl::EnableStaleWhileRevalidateForTesting() {
if (!async_revalidation_manager_)
async_revalidation_manager_.reset(new AsyncRevalidationManager);
}
// static
int ResourceDispatcherHostImpl::CalculateApproximateMemoryCost(
net::URLRequest* request) {
// The following fields should be a minor size contribution (experimentally
// on the order of 100). However since they are variable length, it could
// in theory be a sizeable contribution.
int strings_cost = request->extra_request_headers().ToString().size() +
request->original_url().spec().size() +
request->referrer().size() +
request->method().size();
// Note that this expression will typically be dominated by:
// |kAvgBytesPerOutstandingRequest|.
return kAvgBytesPerOutstandingRequest + strings_cost;
}
void ResourceDispatcherHostImpl::BeginRequestInternal(
scoped_ptr<net::URLRequest> request,
scoped_ptr<ResourceHandler> handler) {
DCHECK(!request->is_pending());
ResourceRequestInfoImpl* info =
ResourceRequestInfoImpl::ForRequest(request.get());
if ((TimeTicks::Now() - last_user_gesture_time_) <
TimeDelta::FromMilliseconds(kUserGestureWindowMs)) {
request->SetLoadFlags(
request->load_flags() | net::LOAD_MAYBE_USER_GESTURE);
}
// Add the memory estimate that starting this request will consume.
info->set_memory_cost(CalculateApproximateMemoryCost(request.get()));
// If enqueing/starting this request will exceed our per-process memory
// bound, abort it right away.
OustandingRequestsStats stats = IncrementOutstandingRequestsMemory(1, *info);
if (stats.memory_cost > max_outstanding_requests_cost_per_process_) {
// We call "CancelWithError()" as a way of setting the net::URLRequest's
// status -- it has no effect beyond this, since the request hasn't started.
request->CancelWithError(net::ERR_INSUFFICIENT_RESOURCES);
bool defer = false;
handler->OnResponseCompleted(request->status(), std::string(), &defer);
if (defer) {
// TODO(darin): The handler is not ready for us to kill the request. Oops!
NOTREACHED();
}
IncrementOutstandingRequestsMemory(-1, *info);
// A ResourceHandler must not outlive its associated URLRequest.
handler.reset();
return;
}
linked_ptr<ResourceLoader> loader(
new ResourceLoader(request.Pass(), handler.Pass(), this));
GlobalRoutingID id(info->GetGlobalRoutingID());
BlockedLoadersMap::const_iterator iter = blocked_loaders_map_.find(id);
if (iter != blocked_loaders_map_.end()) {
// The request should be blocked.
iter->second->push_back(loader);
return;
}
StartLoading(info, loader);
}
void ResourceDispatcherHostImpl::StartLoading(
ResourceRequestInfoImpl* info,
const linked_ptr<ResourceLoader>& loader) {
// TODO(pkasting): Remove ScopedTracker below once crbug.com/456331 is fixed.
tracked_objects::ScopedTracker tracking_profile(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"456331 ResourceDispatcherHostImpl::StartLoading"));
pending_loaders_[info->GetGlobalRequestID()] = loader;
loader->StartRequest();
}
void ResourceDispatcherHostImpl::OnUserGesture(WebContentsImpl* contents) {
last_user_gesture_time_ = TimeTicks::Now();
}
net::URLRequest* ResourceDispatcherHostImpl::GetURLRequest(
const GlobalRequestID& id) {
ResourceLoader* loader = GetLoader(id);
if (!loader)
return NULL;
return loader->request();
}
// static
bool ResourceDispatcherHostImpl::LoadInfoIsMoreInteresting(const LoadInfo& a,
const LoadInfo& b) {
// Set |*_uploading_size| to be the size of the corresponding upload body if
// it's currently being uploaded.
uint64 a_uploading_size = 0;
if (a.load_state.state == net::LOAD_STATE_SENDING_REQUEST)
a_uploading_size = a.upload_size;
uint64 b_uploading_size = 0;
if (b.load_state.state == net::LOAD_STATE_SENDING_REQUEST)
b_uploading_size = b.upload_size;
if (a_uploading_size != b_uploading_size)
return a_uploading_size > b_uploading_size;
return a.load_state.state > b.load_state.state;
}
// static
void ResourceDispatcherHostImpl::UpdateLoadInfoOnUIThread(
scoped_ptr<LoadInfoMap> info_map) {
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
// is fixed.
tracked_objects::ScopedTracker tracking_profile(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466285 ResourceDispatcherHostImpl::UpdateLoadInfoOnUIThread"));
DCHECK_CURRENTLY_ON(BrowserThread::UI);
for (const auto& load_info : *info_map) {
RenderViewHostImpl* view = RenderViewHostImpl::FromID(
load_info.first.child_id, load_info.first.route_id);
// The view could be gone at this point.
if (view) {
view->LoadStateChanged(load_info.second.url, load_info.second.load_state,
load_info.second.upload_position,
load_info.second.upload_size);
}
}
}
scoped_ptr<ResourceDispatcherHostImpl::LoadInfoMap>
ResourceDispatcherHostImpl::GetLoadInfoForAllRoutes() {
// Populate this map with load state changes, and then send them on to the UI
// thread where they can be passed along to the respective RVHs.
scoped_ptr<LoadInfoMap> info_map(new LoadInfoMap());
for (const auto& loader : pending_loaders_) {
net::URLRequest* request = loader.second->request();
net::UploadProgress upload_progress = request->GetUploadProgress();
LoadInfo load_info;
load_info.url = request->url();
load_info.load_state = request->GetLoadState();
load_info.upload_size = upload_progress.size();
load_info.upload_position = upload_progress.position();
GlobalRoutingID id(loader.second->GetRequestInfo()->GetGlobalRoutingID());
LoadInfoMap::iterator existing = info_map->find(id);
if (existing == info_map->end() ||
LoadInfoIsMoreInteresting(load_info, existing->second)) {
(*info_map)[id] = load_info;
}
}
return info_map.Pass();
}
void ResourceDispatcherHostImpl::UpdateLoadInfo() {
scoped_ptr<LoadInfoMap> info_map(GetLoadInfoForAllRoutes());
// Stop the timer if there are no more pending requests. Future new requests
// will restart it as necessary.
// Also stop the timer if there are no loading clients, to avoid waking up
// unnecessarily when there is a long running (hanging get) request.
if (info_map->empty() || !scheduler_->HasLoadingClients()) {
update_load_states_timer_->Stop();
return;
}
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&ResourceDispatcherHostImpl::UpdateLoadInfoOnUIThread,
base::Passed(&info_map)));
}
void ResourceDispatcherHostImpl::BlockRequestsForRoute(int child_id,
int route_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
GlobalRoutingID key(child_id, route_id);
DCHECK(blocked_loaders_map_.find(key) == blocked_loaders_map_.end()) <<
"BlockRequestsForRoute called multiple time for the same RVH";
blocked_loaders_map_[key] = new BlockedLoadersList();
}
void ResourceDispatcherHostImpl::ResumeBlockedRequestsForRoute(int child_id,
int route_id) {
ProcessBlockedRequestsForRoute(child_id, route_id, false);
}
void ResourceDispatcherHostImpl::CancelBlockedRequestsForRoute(int child_id,
int route_id) {
ProcessBlockedRequestsForRoute(child_id, route_id, true);
}
void ResourceDispatcherHostImpl::ProcessBlockedRequestsForRoute(
int child_id,
int route_id,
bool cancel_requests) {
BlockedLoadersMap::iterator iter = blocked_loaders_map_.find(
GlobalRoutingID(child_id, route_id));
if (iter == blocked_loaders_map_.end()) {
// It's possible to reach here if the renderer crashed while an interstitial
// page was showing.
return;
}
BlockedLoadersList* loaders = iter->second;
// Removing the vector from the map unblocks any subsequent requests.
blocked_loaders_map_.erase(iter);
for (BlockedLoadersList::iterator loaders_iter = loaders->begin();
loaders_iter != loaders->end(); ++loaders_iter) {
linked_ptr<ResourceLoader> loader = *loaders_iter;
ResourceRequestInfoImpl* info = loader->GetRequestInfo();
if (cancel_requests) {
IncrementOutstandingRequestsMemory(-1, *info);
} else {
StartLoading(info, loader);
}
}
delete loaders;
}
ResourceDispatcherHostImpl::HttpAuthRelationType
ResourceDispatcherHostImpl::HttpAuthRelationTypeOf(
const GURL& request_url,
const GURL& first_party) {
if (!first_party.is_valid())
return HTTP_AUTH_RELATION_TOP;
if (net::registry_controlled_domains::SameDomainOrHost(
first_party, request_url,
net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES))
return HTTP_AUTH_RELATION_SAME_DOMAIN;
if (allow_cross_origin_auth_prompt())
return HTTP_AUTH_RELATION_ALLOWED_CROSS;
return HTTP_AUTH_RELATION_BLOCKED_CROSS;
}
bool ResourceDispatcherHostImpl::allow_cross_origin_auth_prompt() {
return allow_cross_origin_auth_prompt_;
}
bool ResourceDispatcherHostImpl::IsTransferredNavigation(
const GlobalRequestID& id) const {
ResourceLoader* loader = GetLoader(id);
return loader ? loader->is_transferring() : false;
}
ResourceLoader* ResourceDispatcherHostImpl::GetLoader(
const GlobalRequestID& id) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
LoaderMap::const_iterator i = pending_loaders_.find(id);
if (i == pending_loaders_.end())
return NULL;
return i->second.get();
}
ResourceLoader* ResourceDispatcherHostImpl::GetLoader(int child_id,
int request_id) const {
return GetLoader(GlobalRequestID(child_id, request_id));
}
void ResourceDispatcherHostImpl::RegisterResourceMessageDelegate(
const GlobalRequestID& id, ResourceMessageDelegate* delegate) {
DelegateMap::iterator it = delegate_map_.find(id);
if (it == delegate_map_.end()) {
it = delegate_map_.insert(
std::make_pair(
id,
new base::ObserverList<ResourceMessageDelegate>))
.first;
}
it->second->AddObserver(delegate);
}
void ResourceDispatcherHostImpl::UnregisterResourceMessageDelegate(
const GlobalRequestID& id, ResourceMessageDelegate* delegate) {
DCHECK(ContainsKey(delegate_map_, id));
DelegateMap::iterator it = delegate_map_.find(id);
DCHECK(it->second->HasObserver(delegate));
it->second->RemoveObserver(delegate);
if (!it->second->might_have_observers()) {
delete it->second;
delegate_map_.erase(it);
}
}
int ResourceDispatcherHostImpl::BuildLoadFlagsForRequest(
const ResourceHostMsg_Request& request_data,
int child_id,
bool is_sync_load) {
int load_flags = request_data.load_flags;
// Although EV status is irrelevant to sub-frames and sub-resources, we have
// to perform EV certificate verification on all resources because an HTTP
// keep-alive connection created to load a sub-frame or a sub-resource could
// be reused to load a main frame.
load_flags |= net::LOAD_VERIFY_EV_CERT;
if (request_data.resource_type == RESOURCE_TYPE_MAIN_FRAME) {
load_flags |= net::LOAD_MAIN_FRAME;
} else if (request_data.resource_type == RESOURCE_TYPE_PREFETCH) {
load_flags |= net::LOAD_PREFETCH;
}
if (is_sync_load)
load_flags |= net::LOAD_IGNORE_LIMITS;
return load_flags;
}
} // namespace content