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chromium / chromium / src.git / c4fa33ec83c90a1da23539bb062e79a4f1e46675 / . / services / network / url_loader.cc
blob: 536d17a384dc8280ee2e8eb260aa2c9511fad182 [file] [log] [blame]
// Copyright 2017 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.
#include "services/network/url_loader.h"
#include <algorithm>
#include <limits>
#include <string>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/files/file.h"
#include "base/logging.h"
#include "base/memory/weak_ptr.h"
#include "base/metrics/histogram_macros.h"
#include "base/optional.h"
#include "base/task/post_task.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "mojo/public/cpp/system/simple_watcher.h"
#include "net/base/elements_upload_data_stream.h"
#include "net/base/ip_endpoint.h"
#include "net/base/mime_sniffer.h"
#include "net/base/static_cookie_policy.h"
#include "net/base/upload_bytes_element_reader.h"
#include "net/base/upload_file_element_reader.h"
#include "net/ssl/client_cert_store.h"
#include "net/ssl/ssl_connection_status_flags.h"
#include "net/ssl/ssl_private_key.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_getter.h"
#include "services/network/chunked_data_pipe_upload_data_stream.h"
#include "services/network/cross_origin_resource_policy.h"
#include "services/network/data_pipe_element_reader.h"
#include "services/network/empty_url_loader_client.h"
#include "services/network/loader_util.h"
#include "services/network/network_usage_accumulator.h"
#include "services/network/public/cpp/constants.h"
#include "services/network/public/cpp/features.h"
#include "services/network/public/cpp/net_adapters.h"
#include "services/network/public/cpp/network_switches.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/resource_response.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "services/network/resource_scheduler_client.h"
#include "services/network/sec_fetch_site.h"
#include "services/network/throttling/scoped_throttling_token.h"
namespace network {
namespace {
// Cannot use 0, because this means "default" in
// mojo::core::Core::CreateDataPipe
constexpr size_t kBlockedBodyAllocationSize = 1;
// TODO: this duplicates some of PopulateResourceResponse in
// content/browser/loader/resource_loader.cc
void PopulateResourceResponse(net::URLRequest* request,
bool is_load_timing_enabled,
bool include_ssl_info,
ResourceResponse* response) {
response->head.request_time = request->request_time();
response->head.response_time = request->response_time();
response->head.headers = request->response_headers();
request->GetCharset(&response->head.charset);
response->head.content_length = request->GetExpectedContentSize();
request->GetMimeType(&response->head.mime_type);
net::HttpResponseInfo response_info = request->response_info();
response->head.was_fetched_via_spdy = response_info.was_fetched_via_spdy;
response->head.was_alpn_negotiated = response_info.was_alpn_negotiated;
response->head.alpn_negotiated_protocol =
response_info.alpn_negotiated_protocol;
response->head.connection_info = response_info.connection_info;
response->head.remote_endpoint = response_info.remote_endpoint;
response->head.was_fetched_via_cache = request->was_cached();
response->head.proxy_server = request->proxy_server();
response->head.network_accessed = response_info.network_accessed;
response->head.async_revalidation_requested =
response_info.async_revalidation_requested;
response->head.effective_connection_type =
net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN;
if (is_load_timing_enabled)
request->GetLoadTimingInfo(&response->head.load_timing);
if (request->ssl_info().cert.get()) {
response->head.ct_policy_compliance =
request->ssl_info().ct_policy_compliance;
response->head.cert_status = request->ssl_info().cert_status;
net::SSLVersion ssl_version = net::SSLConnectionStatusToVersion(
request->ssl_info().connection_status);
response->head.is_legacy_tls_version =
ssl_version == net::SSLVersion::SSL_CONNECTION_VERSION_TLS1 ||
ssl_version == net::SSLVersion::SSL_CONNECTION_VERSION_TLS1_1;
if (include_ssl_info)
response->head.ssl_info = request->ssl_info();
}
response->head.request_start = request->creation_time();
response->head.response_start = base::TimeTicks::Now();
response->head.encoded_data_length = request->GetTotalReceivedBytes();
}
// A subclass of net::UploadBytesElementReader which owns
// ResourceRequestBody.
class BytesElementReader : public net::UploadBytesElementReader {
public:
BytesElementReader(ResourceRequestBody* resource_request_body,
const DataElement& element)
: net::UploadBytesElementReader(element.bytes(), element.length()),
resource_request_body_(resource_request_body) {
DCHECK_EQ(network::mojom::DataElementType::kBytes, element.type());
}
~BytesElementReader() override {}
private:
scoped_refptr<ResourceRequestBody> resource_request_body_;
DISALLOW_COPY_AND_ASSIGN(BytesElementReader);
};
// A subclass of net::UploadFileElementReader which owns
// ResourceRequestBody.
// This class is necessary to ensure the BlobData and any attached shareable
// files survive until upload completion.
class FileElementReader : public net::UploadFileElementReader {
public:
FileElementReader(ResourceRequestBody* resource_request_body,
base::TaskRunner* task_runner,
const DataElement& element,
base::File&& file)
: net::UploadFileElementReader(task_runner,
std::move(file),
element.path(),
element.offset(),
element.length(),
element.expected_modification_time()),
resource_request_body_(resource_request_body) {
DCHECK_EQ(network::mojom::DataElementType::kFile, element.type());
}
~FileElementReader() override {}
private:
scoped_refptr<ResourceRequestBody> resource_request_body_;
DISALLOW_COPY_AND_ASSIGN(FileElementReader);
};
class RawFileElementReader : public net::UploadFileElementReader {
public:
RawFileElementReader(ResourceRequestBody* resource_request_body,
base::TaskRunner* task_runner,
const DataElement& element)
: net::UploadFileElementReader(
task_runner,
// TODO(mmenke): Is duplicating this necessary?
element.file().Duplicate(),
element.path(),
element.offset(),
element.length(),
element.expected_modification_time()),
resource_request_body_(resource_request_body) {
DCHECK_EQ(network::mojom::DataElementType::kRawFile, element.type());
}
~RawFileElementReader() override {}
private:
scoped_refptr<ResourceRequestBody> resource_request_body_;
DISALLOW_COPY_AND_ASSIGN(RawFileElementReader);
};
// TODO: copied from content/browser/loader/upload_data_stream_builder.cc.
std::unique_ptr<net::UploadDataStream> CreateUploadDataStream(
ResourceRequestBody* body,
std::vector<base::File>& opened_files,
base::SequencedTaskRunner* file_task_runner) {
// In the case of a chunked upload, there will just be one element.
if (body->elements()->size() == 1 &&
body->elements()->begin()->type() ==
network::mojom::DataElementType::kChunkedDataPipe) {
return std::make_unique<ChunkedDataPipeUploadDataStream>(
body, mojom::ChunkedDataPipeGetterPtr(
const_cast<DataElement&>(body->elements()->front())
.ReleaseChunkedDataPipeGetter()));
}
auto opened_file = opened_files.begin();
std::vector<std::unique_ptr<net::UploadElementReader>> element_readers;
for (const auto& element : *body->elements()) {
switch (element.type()) {
case network::mojom::DataElementType::kBytes:
element_readers.push_back(
std::make_unique<BytesElementReader>(body, element));
break;
case network::mojom::DataElementType::kFile:
DCHECK(opened_file != opened_files.end());
element_readers.push_back(std::make_unique<FileElementReader>(
body, file_task_runner, element, std::move(*opened_file++)));
break;
case network::mojom::DataElementType::kRawFile:
element_readers.push_back(std::make_unique<RawFileElementReader>(
body, file_task_runner, element));
break;
case network::mojom::DataElementType::kBlob: {
CHECK(false) << "Network service always uses DATA_PIPE for blobs.";
break;
}
case network::mojom::DataElementType::kDataPipe: {
element_readers.push_back(std::make_unique<DataPipeElementReader>(
body, element.CloneDataPipeGetter()));
break;
}
case network::mojom::DataElementType::kChunkedDataPipe: {
// This shouldn't happen, as the traits logic should ensure that if
// there's a chunked pipe, there's one and only one element.
NOTREACHED();
break;
}
case network::mojom::DataElementType::kUnknown:
NOTREACHED();
break;
}
}
DCHECK(opened_file == opened_files.end());
return std::make_unique<net::ElementsUploadDataStream>(
std::move(element_readers), body->identifier());
}
class SSLPrivateKeyInternal : public net::SSLPrivateKey {
public:
SSLPrivateKeyInternal(const std::string& provider_name,
const std::vector<uint16_t>& algorithm_preferences,
mojom::SSLPrivateKeyPtr ssl_private_key)
: provider_name_(provider_name),
algorithm_preferences_(algorithm_preferences),
ssl_private_key_(std::move(ssl_private_key)) {
ssl_private_key_.set_connection_error_handler(
base::BindOnce(&SSLPrivateKeyInternal::HandleSSLPrivateKeyError,
base::Unretained(this)));
}
// net::SSLPrivateKey:
std::string GetProviderName() override { return provider_name_; }
std::vector<uint16_t> GetAlgorithmPreferences() override {
return algorithm_preferences_;
}
void Sign(uint16_t algorithm,
base::span<const uint8_t> input,
net::SSLPrivateKey::SignCallback callback) override {
std::vector<uint8_t> input_vector(input.begin(), input.end());
if (!ssl_private_key_ || ssl_private_key_.encountered_error()) {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::BindOnce(std::move(callback),
net::ERR_SSL_CLIENT_AUTH_CERT_NO_PRIVATE_KEY,
input_vector));
return;
}
ssl_private_key_->Sign(algorithm, input_vector,
base::BindOnce(&SSLPrivateKeyInternal::Callback,
this, std::move(callback)));
}
private:
~SSLPrivateKeyInternal() override = default;
void HandleSSLPrivateKeyError() { ssl_private_key_.reset(); }
void Callback(net::SSLPrivateKey::SignCallback callback,
int32_t net_error,
const std::vector<uint8_t>& input) {
DCHECK_LE(net_error, 0);
DCHECK_NE(net_error, net::ERR_IO_PENDING);
std::move(callback).Run(static_cast<net::Error>(net_error), input);
}
std::string provider_name_;
std::vector<uint16_t> algorithm_preferences_;
mojom::SSLPrivateKeyPtr ssl_private_key_;
DISALLOW_COPY_AND_ASSIGN(SSLPrivateKeyInternal);
};
} // namespace
URLLoader::URLLoader(
net::URLRequestContext* url_request_context,
mojom::NetworkServiceClient* network_service_client,
DeleteCallback delete_callback,
mojom::URLLoaderRequest url_loader_request,
int32_t options,
const ResourceRequest& request,
mojom::URLLoaderClientPtr url_loader_client,
const net::NetworkTrafficAnnotationTag& traffic_annotation,
const mojom::URLLoaderFactoryParams* factory_params,
uint32_t request_id,
scoped_refptr<ResourceSchedulerClient> resource_scheduler_client,
base::WeakPtr<KeepaliveStatisticsRecorder> keepalive_statistics_recorder,
base::WeakPtr<NetworkUsageAccumulator> network_usage_accumulator,
mojom::TrustedURLLoaderHeaderClient* url_loader_header_client)
: url_request_context_(url_request_context),
network_service_client_(network_service_client),
delete_callback_(std::move(delete_callback)),
options_(options),
corb_detachable_(request.corb_detachable),
resource_type_(request.resource_type),
is_load_timing_enabled_(request.enable_load_timing),
factory_params_(factory_params),
render_frame_id_(request.render_frame_id),
request_id_(request_id),
keepalive_(request.keepalive),
do_not_prompt_for_login_(request.do_not_prompt_for_login),
binding_(this, std::move(url_loader_request)),
auth_challenge_responder_binding_(this),
url_loader_client_(std::move(url_loader_client)),
writable_handle_watcher_(FROM_HERE,
mojo::SimpleWatcher::ArmingPolicy::MANUAL,
base::SequencedTaskRunnerHandle::Get()),
peer_closed_handle_watcher_(FROM_HERE,
mojo::SimpleWatcher::ArmingPolicy::MANUAL,
base::SequencedTaskRunnerHandle::Get()),
want_raw_headers_(request.report_raw_headers),
report_raw_headers_(false),
devtools_request_id_(request.devtools_request_id),
resource_scheduler_client_(std::move(resource_scheduler_client)),
keepalive_statistics_recorder_(std::move(keepalive_statistics_recorder)),
network_usage_accumulator_(std::move(network_usage_accumulator)),
first_auth_attempt_(true),
custom_proxy_pre_cache_headers_(request.custom_proxy_pre_cache_headers),
custom_proxy_post_cache_headers_(request.custom_proxy_post_cache_headers),
custom_proxy_use_alternate_proxy_list_(
request.custom_proxy_use_alternate_proxy_list),
fetch_window_id_(request.fetch_window_id),
weak_ptr_factory_(this) {
DCHECK(delete_callback_);
DCHECK(factory_params_);
if (!base::FeatureList::IsEnabled(features::kNetworkService)) {
CHECK(!url_loader_client_.internal_state()
->handle()
.QuerySignalsState()
.peer_remote())
<< "URLLoader must not be used by the renderer when network service is "
<< "disabled, as that skips security checks in ResourceDispatcherHost. "
<< "The only acceptable usage is the browser using SimpleURLLoader.";
}
if (url_loader_header_client &&
(options_ & mojom::kURLLoadOptionUseHeaderClient)) {
url_loader_header_client->OnLoaderCreated(
request_id_, mojo::MakeRequest(&header_client_));
// Make sure the loader dies if |header_client_| has an error, otherwise
// requests can hang.
header_client_.set_connection_error_handler(
base::BindOnce(&URLLoader::OnConnectionError, base::Unretained(this)));
}
if (want_raw_headers_) {
options_ |= mojom::kURLLoadOptionSendSSLInfoWithResponse |
mojom::kURLLoadOptionSendSSLInfoForCertificateError;
}
binding_.set_connection_error_handler(
base::BindOnce(&URLLoader::OnConnectionError, base::Unretained(this)));
url_request_ = url_request_context_->CreateRequest(
GURL(request.url), request.priority, this, traffic_annotation);
url_request_->set_method(request.method);
url_request_->set_site_for_cookies(request.site_for_cookies);
url_request_->set_top_frame_origin(request.top_frame_origin);
url_request_->set_attach_same_site_cookies(request.attach_same_site_cookies);
url_request_->SetReferrer(ComputeReferrer(request.referrer));
url_request_->set_referrer_policy(request.referrer_policy);
url_request_->set_upgrade_if_insecure(request.upgrade_if_insecure);
// |cors_excempt_headers| must be merged here to avoid breaking CORS checks.
// They are non-empty when the values are given by the UA code, therefore
// they should be ignored by CORS checks.
net::HttpRequestHeaders merged_headers = request.headers;
merged_headers.MergeFrom(request.cors_exempt_headers);
url_request_->SetExtraRequestHeaders(merged_headers);
url_request_->SetUserData(kUserDataKey,
std::make_unique<UnownedPointer>(this));
is_nocors_corb_excluded_request_ =
request.corb_excluded &&
request.fetch_request_mode == mojom::FetchRequestMode::kNoCors &&
CrossOriginReadBlocking::ShouldAllowForPlugin(
factory_params_->process_id);
fetch_request_mode_ = request.fetch_request_mode;
throttling_token_ = network::ScopedThrottlingToken::MaybeCreate(
url_request_->net_log().source().id, request.throttling_profile_id);
url_request_->set_initiator(request.request_initiator);
SetSecFetchSiteHeader(url_request_.get(), nullptr, *factory_params_);
if (request.update_first_party_url_on_redirect) {
url_request_->set_first_party_url_policy(
net::URLRequest::UPDATE_FIRST_PARTY_URL_ON_REDIRECT);
}
url_request_->SetLoadFlags(request.load_flags);
// net::LOAD_DO_NOT_* are in the process of being converted to
// allow_credentials. See https://crbug.com/799935.
if (!request.allow_credentials) {
const auto creds_mask = net::LOAD_DO_NOT_SAVE_COOKIES |
net::LOAD_DO_NOT_SEND_COOKIES |
net::LOAD_DO_NOT_SEND_AUTH_DATA;
DCHECK((request.load_flags & creds_mask) == 0 ||
(request.load_flags & creds_mask) == creds_mask);
url_request_->set_allow_credentials(false);
}
if (want_raw_headers_) {
url_request_->SetRequestHeadersCallback(
base::Bind(&net::HttpRawRequestHeaders::Assign,
base::Unretained(&raw_request_headers_)));
url_request_->SetResponseHeadersCallback(
base::Bind(&URLLoader::SetRawResponseHeaders, base::Unretained(this)));
}
if (keepalive_ && keepalive_statistics_recorder_)
keepalive_statistics_recorder_->OnLoadStarted(factory_params_->process_id);
// Resolve elements from request_body and prepare upload data.
if (request.request_body.get()) {
OpenFilesForUpload(request);
return;
}
ScheduleStart();
}
// This class is used to manage the queue of pending file upload operations
// initiated by the URLLoader::OpenFilesForUpload().
class URLLoader::FileOpenerForUpload {
public:
typedef base::OnceCallback<void(int, std::vector<base::File>)>
SetUpUploadCallback;
FileOpenerForUpload(std::vector<base::FilePath> paths,
URLLoader* url_loader,
uint32_t process_id,
mojom::NetworkServiceClient* network_service_client,
SetUpUploadCallback set_up_upload_callback)
: paths_(std::move(paths)),
url_loader_(url_loader),
process_id_(process_id),
network_service_client_(network_service_client),
set_up_upload_callback_(std::move(set_up_upload_callback)),
weak_ptr_factory_(this) {
StartOpeningNextBatch();
}
~FileOpenerForUpload() {
if (!opened_files_.empty())
PostCloseFiles(std::move(opened_files_));
}
private:
static void OnFilesForUploadOpened(
base::WeakPtr<FileOpenerForUpload> file_opener,
size_t num_files_requested,
int error_code,
std::vector<base::File> opened_files) {
if (!file_opener) {
PostCloseFiles(std::move(opened_files));
return;
}
if (error_code == net::OK && num_files_requested != opened_files.size())
error_code = net::ERR_FAILED;
if (error_code != net::OK) {
PostCloseFiles(std::move(opened_files));
file_opener->FilesForUploadOpenedDone(error_code);
return;
}
for (base::File& file : opened_files)
file_opener->opened_files_.push_back(std::move(file));
if (file_opener->opened_files_.size() < file_opener->paths_.size()) {
file_opener->StartOpeningNextBatch();
return;
}
file_opener->FilesForUploadOpenedDone(net::OK);
}
// |opened_files| need to be closed on a blocking task runner, so move
// the |opened_files| vector onto a sequence that can block so it gets
// destroyed there.
static void PostCloseFiles(std::vector<base::File> opened_files) {
base::PostTaskWithTraits(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_BLOCKING},
base::BindOnce(base::DoNothing::Once<std::vector<base::File>>(),
std::move(opened_files)));
}
void StartOpeningNextBatch() {
size_t num_files_to_request = std::min(paths_.size() - opened_files_.size(),
kMaxFileUploadRequestsPerBatch);
std::vector<base::FilePath> batch_paths(
paths_.begin() + opened_files_.size(),
paths_.begin() + opened_files_.size() + num_files_to_request);
network_service_client_->OnFileUploadRequested(
process_id_, /*async=*/true, batch_paths,
base::BindOnce(&FileOpenerForUpload::OnFilesForUploadOpened,
weak_ptr_factory_.GetWeakPtr(), num_files_to_request));
}
void FilesForUploadOpenedDone(int error_code) {
url_loader_->url_request_->LogUnblocked();
if (error_code == net::OK)
std::move(set_up_upload_callback_).Run(net::OK, std::move(opened_files_));
else
std::move(set_up_upload_callback_).Run(error_code, {});
}
// The paths of files for upload
const std::vector<base::FilePath> paths_;
URLLoader* const url_loader_;
const uint32_t process_id_;
mojom::NetworkServiceClient* const network_service_client_;
SetUpUploadCallback set_up_upload_callback_;
// The files opened so far.
std::vector<base::File> opened_files_;
base::WeakPtrFactory<FileOpenerForUpload> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(FileOpenerForUpload);
};
void URLLoader::OpenFilesForUpload(const ResourceRequest& request) {
std::vector<base::FilePath> paths;
for (const auto& element : *request.request_body.get()->elements()) {
if (element.type() == mojom::DataElementType::kFile)
paths.push_back(element.path());
}
if (paths.empty()) {
SetUpUpload(request, net::OK, std::vector<base::File>());
return;
}
if (!network_service_client_) {
// Defer calling NotifyCompleted to make sure the URLLoader finishes
// initializing before getting deleted.
base::SequencedTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::BindOnce(&URLLoader::NotifyCompleted, base::Unretained(this),
net::ERR_ACCESS_DENIED));
return;
}
url_request_->LogBlockedBy("Opening Files");
file_opener_for_upload_ = std::make_unique<FileOpenerForUpload>(
std::move(paths), this, factory_params_->process_id,
network_service_client_,
base::BindOnce(&URLLoader::SetUpUpload, base::Unretained(this), request));
}
void URLLoader::SetUpUpload(const ResourceRequest& request,
int error_code,
std::vector<base::File> opened_files) {
if (error_code != net::OK) {
DCHECK(opened_files.empty());
// Defer calling NotifyCompleted to make sure the URLLoader finishes
// initializing before getting deleted.
base::SequencedTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::BindOnce(&URLLoader::NotifyCompleted,
base::Unretained(this), error_code));
return;
}
scoped_refptr<base::SequencedTaskRunner> task_runner =
base::CreateSequencedTaskRunnerWithTraits(
{base::MayBlock(), base::TaskPriority::USER_VISIBLE});
url_request_->set_upload(CreateUploadDataStream(
request.request_body.get(), opened_files, task_runner.get()));
if (request.enable_upload_progress) {
upload_progress_tracker_ = std::make_unique<UploadProgressTracker>(
FROM_HERE,
base::BindRepeating(&URLLoader::SendUploadProgress,
base::Unretained(this)),
url_request_.get());
}
ScheduleStart();
}
void URLLoader::ScheduleStart() {
bool defer = false;
if (resource_scheduler_client_) {
resource_scheduler_request_handle_ =
resource_scheduler_client_->ScheduleRequest(
!(options_ & mojom::kURLLoadOptionSynchronous), url_request_.get());
resource_scheduler_request_handle_->set_resume_callback(
base::BindRepeating(&URLLoader::ResumeStart, base::Unretained(this)));
resource_scheduler_request_handle_->WillStartRequest(&defer);
}
if (defer)
url_request_->LogBlockedBy("ResourceScheduler");
else
url_request_->Start();
}
URLLoader::~URLLoader() {
RecordBodyReadFromNetBeforePausedIfNeeded();
if (keepalive_ && keepalive_statistics_recorder_)
keepalive_statistics_recorder_->OnLoadFinished(factory_params_->process_id);
}
// static
const void* const URLLoader::kUserDataKey = &URLLoader::kUserDataKey;
void URLLoader::FollowRedirect(const std::vector<std::string>& removed_headers,
const net::HttpRequestHeaders& modified_headers,
const base::Optional<GURL>& new_url) {
if (!url_request_) {
NotifyCompleted(net::ERR_UNEXPECTED);
// |this| may have been deleted.
return;
}
if (!deferred_redirect_url_) {
NOTREACHED();
return;
}
deferred_redirect_url_.reset();
new_redirect_url_ = new_url;
url_request_->FollowDeferredRedirect(removed_headers, modified_headers);
new_redirect_url_.reset();
}
void URLLoader::ProceedWithResponse() {
NOTREACHED();
}
void URLLoader::SetPriority(net::RequestPriority priority,
int32_t intra_priority_value) {
if (url_request_ && resource_scheduler_client_) {
resource_scheduler_client_->ReprioritizeRequest(
url_request_.get(), priority, intra_priority_value);
}
}
void URLLoader::PauseReadingBodyFromNet() {
DVLOG(1) << "URLLoader pauses fetching response body for "
<< (url_request_ ? url_request_->original_url().spec()
: "a URL that has completed loading or failed.");
if (!url_request_)
return;
// Please note that we pause reading body in all cases. Even if the URL
// request indicates that the response was cached, there could still be
// network activity involved. For example, the response was only partially
// cached.
//
// On the other hand, we only report BodyReadFromNetBeforePaused histogram
// when we are sure that the response body hasn't been read from cache. This
// avoids polluting the histogram data with data points from cached responses.
should_pause_reading_body_ = true;
// If the data pipe has been set up and the request is in IO pending state,
// there is a pending read for the response body.
if (HasDataPipe() && url_request_->status().is_io_pending()) {
update_body_read_before_paused_ = true;
} else {
body_read_before_paused_ = url_request_->GetRawBodyBytes();
}
}
void URLLoader::ResumeReadingBodyFromNet() {
DVLOG(1) << "URLLoader resumes fetching response body for "
<< (url_request_ ? url_request_->original_url().spec()
: "a URL that has completed loading or failed.");
should_pause_reading_body_ = false;
if (paused_reading_body_) {
paused_reading_body_ = false;
ReadMore();
}
}
void URLLoader::OnReceivedRedirect(net::URLRequest* url_request,
const net::RedirectInfo& redirect_info,
bool* defer_redirect) {
DCHECK(url_request == url_request_.get());
DCHECK(url_request->status().is_success());
DCHECK(!deferred_redirect_url_);
deferred_redirect_url_ = std::make_unique<GURL>(redirect_info.new_url);
// Send the redirect response to the client, allowing them to inspect it and
// optionally follow the redirect.
*defer_redirect = true;
scoped_refptr<ResourceResponse> response = new ResourceResponse();
PopulateResourceResponse(
url_request_.get(), is_load_timing_enabled_,
options_ & mojom::kURLLoadOptionSendSSLInfoWithResponse, response.get());
if (report_raw_headers_) {
response->head.raw_request_response_info = BuildRawRequestResponseInfo(
*url_request_, raw_request_headers_, raw_response_headers_.get());
raw_request_headers_ = net::HttpRawRequestHeaders();
raw_response_headers_ = nullptr;
}
// Enforce the Cross-Origin-Resource-Policy (CORP) header.
if (CrossOriginResourcePolicy::kBlock ==
CrossOriginResourcePolicy::Verify(
*url_request_, *response, fetch_request_mode_,
factory_params_->request_initiator_site_lock)) {
CompleteBlockedResponse(net::ERR_BLOCKED_BY_RESPONSE, false);
DeleteSelf();
return;
}
SetSecFetchSiteHeader(url_request_.get(), &redirect_info.new_url,
*factory_params_);
url_loader_client_->OnReceiveRedirect(redirect_info, response->head);
}
void URLLoader::OnAuthRequired(net::URLRequest* url_request,
const net::AuthChallengeInfo& auth_info) {
if (!network_service_client_) {
OnAuthCredentials(base::nullopt);
return;
}
if (do_not_prompt_for_login_) {
OnAuthCredentials(base::nullopt);
return;
}
mojom::AuthChallengeResponderPtr auth_challenge_responder;
auto request = mojo::MakeRequest(&auth_challenge_responder);
DCHECK(!auth_challenge_responder_binding_.is_bound());
auth_challenge_responder_binding_.Bind(std::move(request));
auth_challenge_responder_binding_.set_connection_error_handler(
base::BindOnce(&URLLoader::DeleteSelf, base::Unretained(this)));
ResourceResponseHead head;
if (url_request->response_headers())
head.headers = url_request->response_headers();
network_service_client_->OnAuthRequired(
factory_params_->process_id, render_frame_id_, request_id_,
url_request_->url(), first_auth_attempt_, auth_info, head,
std::move(auth_challenge_responder));
first_auth_attempt_ = false;
}
void URLLoader::OnCertificateRequested(net::URLRequest* unused,
net::SSLCertRequestInfo* cert_info) {
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kIgnoreUrlFetcherCertRequests) &&
factory_params_->process_id == 0 &&
render_frame_id_ == MSG_ROUTING_NONE) {
url_request_->ContinueWithCertificate(nullptr, nullptr);
return;
}
if (!network_service_client_) {
OnCertificateRequestedResponse(nullptr, std::string(),
std::vector<uint16_t>(), nullptr,
true /* cancel_certificate_selection */);
return;
}
if (fetch_window_id_) {
network_service_client_->OnCertificateRequested(
fetch_window_id_, -1 /* process_id */, -1 /* routing_id */, request_id_,
cert_info,
base::BindOnce(&URLLoader::OnCertificateRequestedResponse,
weak_ptr_factory_.GetWeakPtr()));
} else {
network_service_client_->OnCertificateRequested(
base::nullopt /* window_id */, factory_params_->process_id,
render_frame_id_, request_id_, cert_info,
base::BindOnce(&URLLoader::OnCertificateRequestedResponse,
weak_ptr_factory_.GetWeakPtr()));
}
}
void URLLoader::OnSSLCertificateError(net::URLRequest* request,
int net_error,
const net::SSLInfo& ssl_info,
bool fatal) {
if (!network_service_client_) {
OnSSLCertificateErrorResponse(ssl_info, net::ERR_INSECURE_RESPONSE);
return;
}
network_service_client_->OnSSLCertificateError(
factory_params_->process_id, render_frame_id_, url_request_->url(),
net_error, ssl_info, fatal,
base::Bind(&URLLoader::OnSSLCertificateErrorResponse,
weak_ptr_factory_.GetWeakPtr(), ssl_info));
}
void URLLoader::OnResponseStarted(net::URLRequest* url_request, int net_error) {
DCHECK(url_request == url_request_.get());
if (net_error != net::OK) {
NotifyCompleted(net_error);
// |this| may have been deleted.
return;
}
MojoCreateDataPipeOptions options;
options.struct_size = sizeof(MojoCreateDataPipeOptions);
options.flags = MOJO_CREATE_DATA_PIPE_FLAG_NONE;
options.element_num_bytes = 1;
options.capacity_num_bytes = kDataPipeDefaultAllocationSize;
MojoResult result =
mojo::CreateDataPipe(&options, &response_body_stream_, &consumer_handle_);
if (result != MOJO_RESULT_OK) {
NotifyCompleted(net::ERR_INSUFFICIENT_RESOURCES);
return;
}
DCHECK(response_body_stream_.is_valid());
DCHECK(consumer_handle_.is_valid());
// Do not account header bytes when reporting received body bytes to client.
reported_total_encoded_bytes_ = url_request_->GetTotalReceivedBytes();
if (upload_progress_tracker_) {
upload_progress_tracker_->OnUploadCompleted();
upload_progress_tracker_ = nullptr;
}
response_ = new ResourceResponse();
PopulateResourceResponse(
url_request_.get(), is_load_timing_enabled_,
options_ & mojom::kURLLoadOptionSendSSLInfoWithResponse, response_.get());
if (report_raw_headers_) {
response_->head.raw_request_response_info = BuildRawRequestResponseInfo(
*url_request_, raw_request_headers_, raw_response_headers_.get());
raw_request_headers_ = net::HttpRawRequestHeaders();
raw_response_headers_ = nullptr;
}
peer_closed_handle_watcher_.Watch(
response_body_stream_.get(), MOJO_HANDLE_SIGNAL_PEER_CLOSED,
base::Bind(&URLLoader::OnResponseBodyStreamConsumerClosed,
base::Unretained(this)));
peer_closed_handle_watcher_.ArmOrNotify();
writable_handle_watcher_.Watch(
response_body_stream_.get(), MOJO_HANDLE_SIGNAL_WRITABLE,
base::Bind(&URLLoader::OnResponseBodyStreamReady,
base::Unretained(this)));
// Enforce the Cross-Origin-Resource-Policy (CORP) header.
if (CrossOriginResourcePolicy::kBlock ==
CrossOriginResourcePolicy::Verify(
*url_request_, *response_, fetch_request_mode_,
factory_params_->request_initiator_site_lock)) {
CompleteBlockedResponse(net::ERR_BLOCKED_BY_RESPONSE, false);
DeleteSelf();
return;
}
// Figure out if we need to sniff (for MIME type detection or for Cross-Origin
// Read Blocking / CORB).
if (factory_params_->is_corb_enabled && !is_nocors_corb_excluded_request_) {
CrossOriginReadBlocking::LogAction(
CrossOriginReadBlocking::Action::kResponseStarted);
corb_analyzer_ =
std::make_unique<CrossOriginReadBlocking::ResponseAnalyzer>(
*url_request_, *response_,
factory_params_->request_initiator_site_lock, fetch_request_mode_);
is_more_corb_sniffing_needed_ = corb_analyzer_->needs_sniffing();
if (corb_analyzer_->ShouldBlock()) {
DCHECK(!is_more_corb_sniffing_needed_);
corb_analyzer_->LogBlockedResponse();
if (BlockResponseForCorb() == kWillCancelRequest)
return;
} else if (corb_analyzer_->ShouldAllow()) {
DCHECK(!is_more_corb_sniffing_needed_);
corb_analyzer_->LogAllowedResponse();
}
}
if ((options_ & mojom::kURLLoadOptionSniffMimeType)) {
if (ShouldSniffContent(url_request_.get(), response_.get())) {
is_more_mime_sniffing_needed_ = true;
} else if (response_->head.mime_type.empty()) {
// Ugg. The server told us not to sniff the content but didn't give us
// a mime type. What's a browser to do? Turns out, we're supposed to
// treat the response as "text/plain". This is the most secure option.
response_->head.mime_type.assign("text/plain");
}
}
if (!is_more_mime_sniffing_needed_ && !is_more_corb_sniffing_needed_) {
// Treat feed types as text/plain.
if (response_->head.mime_type == "application/rss+xml" ||
response_->head.mime_type == "application/atom+xml") {
response_->head.mime_type.assign("text/plain");
}
SendResponseToClient();
}
// Start reading...
ReadMore();
}
void URLLoader::ReadMore() {
// Once the MIME type is sniffed, all data is sent as soon as it is read from
// the network.
DCHECK(consumer_handle_.is_valid() || !pending_write_);
if (should_pause_reading_body_) {
paused_reading_body_ = true;
return;
}
if (!pending_write_.get()) {
// TODO: we should use the abstractions in MojoAsyncResourceHandler.
DCHECK_EQ(0u, pending_write_buffer_offset_);
MojoResult result = NetToMojoPendingBuffer::BeginWrite(
&response_body_stream_, &pending_write_, &pending_write_buffer_size_);
if (result != MOJO_RESULT_OK && result != MOJO_RESULT_SHOULD_WAIT) {
// The response body stream is in a bad state. Bail.
NotifyCompleted(net::ERR_FAILED);
return;
}
DCHECK_GT(static_cast<uint32_t>(std::numeric_limits<int>::max()),
pending_write_buffer_size_);
if (consumer_handle_.is_valid()) {
DCHECK_GE(pending_write_buffer_size_,
static_cast<uint32_t>(net::kMaxBytesToSniff));
}
if (result == MOJO_RESULT_SHOULD_WAIT) {
// The pipe is full. We need to wait for it to have more space.
writable_handle_watcher_.ArmOrNotify();
return;
}
}
auto buf = base::MakeRefCounted<NetToMojoIOBuffer>(
pending_write_.get(), pending_write_buffer_offset_);
int bytes_read;
url_request_->Read(buf.get(),
static_cast<int>(pending_write_buffer_size_ -
pending_write_buffer_offset_),
&bytes_read);
if (url_request_->status().is_io_pending()) {
// Wait for OnReadCompleted.
} else {
DidRead(bytes_read, true);
// |this| may have been deleted.
}
}
void URLLoader::DidRead(int num_bytes, bool completed_synchronously) {
size_t new_data_offset = pending_write_buffer_offset_;
if (num_bytes > 0) {
pending_write_buffer_offset_ += num_bytes;
// Only notify client of download progress if we're done sniffing and
// started sending response.
if (!consumer_handle_.is_valid()) {
int64_t total_encoded_bytes = url_request_->GetTotalReceivedBytes();
int64_t delta = total_encoded_bytes - reported_total_encoded_bytes_;
DCHECK_LE(0, delta);
if (delta)
url_loader_client_->OnTransferSizeUpdated(delta);
reported_total_encoded_bytes_ = total_encoded_bytes;
}
}
if (update_body_read_before_paused_) {
update_body_read_before_paused_ = false;
body_read_before_paused_ = url_request_->GetRawBodyBytes();
}
bool complete_read = true;
if (consumer_handle_.is_valid()) {
// |pending_write_| may be null if the job self-aborts due to a suspend;
// this will have |consumer_handle_| valid when the loader is paused.
if (pending_write_) {
// Limit sniffing to the first net::kMaxBytesToSniff.
size_t data_length = pending_write_buffer_offset_;
if (data_length > net::kMaxBytesToSniff)
data_length = net::kMaxBytesToSniff;
base::StringPiece data(pending_write_->buffer(), data_length);
if (is_more_mime_sniffing_needed_) {
const std::string& type_hint = response_->head.mime_type;
std::string new_type;
is_more_mime_sniffing_needed_ = !net::SniffMimeType(
data.data(), data.size(), url_request_->url(), type_hint,
net::ForceSniffFileUrlsForHtml::kDisabled, &new_type);
// SniffMimeType() returns false if there is not enough data to
// determine the mime type. However, even if it returns false, it
// returns a new type that is probably better than the current one.
response_->head.mime_type.assign(new_type);
response_->head.did_mime_sniff = true;
}
if (is_more_corb_sniffing_needed_) {
corb_analyzer_->SniffResponseBody(data, new_data_offset);
if (corb_analyzer_->ShouldBlock()) {
corb_analyzer_->LogBlockedResponse();
is_more_corb_sniffing_needed_ = false;
if (BlockResponseForCorb() == kWillCancelRequest)
return;
} else if (corb_analyzer_->ShouldAllow()) {
corb_analyzer_->LogAllowedResponse();
is_more_corb_sniffing_needed_ = false;
}
}
}
if (num_bytes <= 0 ||
pending_write_buffer_offset_ >= net::kMaxBytesToSniff) {
is_more_mime_sniffing_needed_ = false;
if (is_more_corb_sniffing_needed_) {
corb_analyzer_->LogAllowedResponse();
is_more_corb_sniffing_needed_ = false;
}
}
if (!is_more_mime_sniffing_needed_ && !is_more_corb_sniffing_needed_) {
SendResponseToClient();
} else {
complete_read = false;
}
}
if (!url_request_->status().is_success() || num_bytes == 0) {
// There may be no |pending_write_| if a URLRequestJob cancelled itself in
// URLRequestJob::OnSuspend() after receiving headers, while there was no
// pending read.
// TODO(mmenke): That case is rather unfortunate - something should be done
// at the socket layer instead, both to make for a better API (Only complete
// reads when there's a pending read), and to cover all TCP socket uses,
// since the concern is the effect that entering suspend mode has on
// sockets. See https://crbug.com/651120.
if (pending_write_)
CompletePendingWrite(url_request_->status().is_success());
NotifyCompleted(url_request_->status().ToNetError());
// |this| will have been deleted.
return;
}
if (complete_read) {
CompletePendingWrite(true /* success */);
}
if (completed_synchronously) {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::BindOnce(&URLLoader::ReadMore, weak_ptr_factory_.GetWeakPtr()));
} else {
ReadMore();
}
}
void URLLoader::OnReadCompleted(net::URLRequest* url_request, int bytes_read) {
DCHECK(url_request == url_request_.get());
DidRead(bytes_read, false);
// |this| may have been deleted.
}
int URLLoader::OnBeforeStartTransaction(net::CompletionOnceCallback callback,
net::HttpRequestHeaders* headers) {
if (header_client_) {
header_client_->OnBeforeSendHeaders(
*headers, base::BindOnce(&URLLoader::OnBeforeSendHeadersComplete,
weak_ptr_factory_.GetWeakPtr(),
std::move(callback), headers));
return net::ERR_IO_PENDING;
}
return net::OK;
}
int URLLoader::OnHeadersReceived(
net::CompletionOnceCallback callback,
const net::HttpResponseHeaders* original_response_headers,
scoped_refptr<net::HttpResponseHeaders>* override_response_headers,
GURL* allowed_unsafe_redirect_url) {
if (header_client_) {
header_client_->OnHeadersReceived(
original_response_headers->raw_headers(),
base::BindOnce(&URLLoader::OnHeadersReceivedComplete,
weak_ptr_factory_.GetWeakPtr(), std::move(callback),
override_response_headers, allowed_unsafe_redirect_url));
return net::ERR_IO_PENDING;
}
return net::OK;
}
net::LoadState URLLoader::GetLoadStateForTesting() const {
if (!url_request_)
return net::LOAD_STATE_IDLE;
return url_request_->GetLoadState().state;
}
uint32_t URLLoader::GetRenderFrameId() const {
return render_frame_id_;
}
uint32_t URLLoader::GetProcessId() const {
return factory_params_->process_id;
}
void URLLoader::SetAllowReportingRawHeaders(bool allow) {
report_raw_headers_ = want_raw_headers_ && allow;
}
uint32_t URLLoader::GetResourceType() const {
return resource_type_;
}
bool URLLoader::AllowCookies(const GURL& url,
const GURL& site_for_cookies) const {
net::StaticCookiePolicy::Type policy =
net::StaticCookiePolicy::ALLOW_ALL_COOKIES;
if (options_ & mojom::kURLLoadOptionBlockAllCookies) {
policy = net::StaticCookiePolicy::BLOCK_ALL_COOKIES;
} else if (options_ & mojom::kURLLoadOptionBlockThirdPartyCookies) {
policy = net::StaticCookiePolicy::BLOCK_ALL_THIRD_PARTY_COOKIES;
} else {
return true;
}
return net::StaticCookiePolicy(policy).CanAccessCookies(
url, site_for_cookies) == net::OK;
}
// static
URLLoader* URLLoader::ForRequest(const net::URLRequest& request) {
auto* pointer =
static_cast<UnownedPointer*>(request.GetUserData(kUserDataKey));
if (!pointer)
return nullptr;
return pointer->get();
}
void URLLoader::OnAuthCredentials(
const base::Optional<net::AuthCredentials>& credentials) {
auth_challenge_responder_binding_.Close();
if (!url_request_)
return;
if (!credentials.has_value()) {
url_request_->CancelAuth();
} else {
url_request_->SetAuth(credentials.value());
}
}
void URLLoader::NotifyCompleted(int error_code) {
// Ensure sending the final upload progress message here, since
// OnResponseCompleted can be called without OnResponseStarted on cancellation
// or error cases.
if (upload_progress_tracker_) {
upload_progress_tracker_->OnUploadCompleted();
upload_progress_tracker_ = nullptr;
}
if (network_usage_accumulator_) {
network_usage_accumulator_->OnBytesTransferred(
factory_params_->process_id, render_frame_id_,
url_request_->GetTotalReceivedBytes(),
url_request_->GetTotalSentBytes());
}
if (network_service_client_ && (url_request_->GetTotalReceivedBytes() > 0 ||
url_request_->GetTotalSentBytes() > 0)) {
network_service_client_->OnDataUseUpdate(
url_request_->traffic_annotation().unique_id_hash_code,
url_request_->GetTotalReceivedBytes(),
url_request_->GetTotalSentBytes());
}
if (url_loader_client_) {
if (consumer_handle_.is_valid())
SendResponseToClient();
URLLoaderCompletionStatus status;
status.error_code = error_code;
if (error_code == net::ERR_QUIC_PROTOCOL_ERROR) {
net::NetErrorDetails details;
url_request_->PopulateNetErrorDetails(&details);
status.extended_error_code = details.quic_connection_error;
}
status.exists_in_cache = url_request_->response_info().was_cached;
status.completion_time = base::TimeTicks::Now();
status.encoded_data_length = url_request_->GetTotalReceivedBytes();
status.encoded_body_length = url_request_->GetRawBodyBytes();
status.decoded_body_length = total_written_bytes_;
status.proxy_server = url_request_->proxy_server();
if ((options_ & mojom::kURLLoadOptionSendSSLInfoForCertificateError) &&
net::IsCertStatusError(url_request_->ssl_info().cert_status) &&
!net::IsCertStatusMinorError(url_request_->ssl_info().cert_status)) {
status.ssl_info = url_request_->ssl_info();
}
url_loader_client_->OnComplete(status);
}
DeleteSelf();
}
void URLLoader::OnConnectionError() {
NotifyCompleted(net::ERR_FAILED);
}
void URLLoader::OnResponseBodyStreamConsumerClosed(MojoResult result) {
NotifyCompleted(net::ERR_FAILED);
}
void URLLoader::OnResponseBodyStreamReady(MojoResult result) {
if (result != MOJO_RESULT_OK) {
NotifyCompleted(net::ERR_FAILED);
return;
}
ReadMore();
}
void URLLoader::DeleteSelf() {
std::move(delete_callback_).Run(this);
}
void URLLoader::SendResponseToClient() {
url_loader_client_->OnReceiveResponse(response_->head);
net::IOBufferWithSize* metadata =
url_request_->response_info().metadata.get();
if (metadata) {
const uint8_t* data = reinterpret_cast<const uint8_t*>(metadata->data());
url_loader_client_->OnReceiveCachedMetadata(
std::vector<uint8_t>(data, data + metadata->size()));
}
url_loader_client_->OnStartLoadingResponseBody(std::move(consumer_handle_));
response_ = nullptr;
}
void URLLoader::CompletePendingWrite(bool success) {
if (success) {
// The write can only be completed immediately in case of a success, since
// doing so invalidates memory of any attached NetToMojoIOBuffer's; but in
// case of an abort, particularly one caused by a suspend, the failure may
// be delivered to URLLoader while the disk_cache layer is still hanging on
// to the now-invalid IOBuffer in some worker thread trying to commit it to
// disk. In case of an error, this will have to wait till everything is
// destroyed.
response_body_stream_ =
pending_write_->Complete(pending_write_buffer_offset_);
}
total_written_bytes_ += pending_write_buffer_offset_;
pending_write_ = nullptr;
pending_write_buffer_offset_ = 0;
}
void URLLoader::SetRawResponseHeaders(
scoped_refptr<const net::HttpResponseHeaders> headers) {
raw_response_headers_ = headers;
}
void URLLoader::SendUploadProgress(const net::UploadProgress& progress) {
url_loader_client_->OnUploadProgress(
progress.position(), progress.size(),
base::BindOnce(&URLLoader::OnUploadProgressACK,
weak_ptr_factory_.GetWeakPtr()));
}
void URLLoader::OnUploadProgressACK() {
if (upload_progress_tracker_)
upload_progress_tracker_->OnAckReceived();
}
void URLLoader::OnSSLCertificateErrorResponse(const net::SSLInfo& ssl_info,
int net_error) {
// The request can be NULL if it was cancelled by the client.
if (!url_request_ || !url_request_->is_pending())
return;
if (net_error == net::OK) {
url_request_->ContinueDespiteLastError();
return;
}
url_request_->CancelWithSSLError(net_error, ssl_info);
}
void URLLoader::OnCertificateRequestedResponse(
const scoped_refptr<net::X509Certificate>& x509_certificate,
const std::string& provider_name,
const std::vector<uint16_t>& algorithm_preferences,
mojom::SSLPrivateKeyPtr ssl_private_key,
bool cancel_certificate_selection) {
if (cancel_certificate_selection) {
url_request_->CancelWithError(net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED);
} else {
if (x509_certificate) {
auto key = base::MakeRefCounted<SSLPrivateKeyInternal>(
provider_name, algorithm_preferences, std::move(ssl_private_key));
url_request_->ContinueWithCertificate(std::move(x509_certificate),
std::move(key));
} else {
url_request_->ContinueWithCertificate(nullptr, nullptr);
}
}
}
bool URLLoader::HasDataPipe() const {
return pending_write_ || response_body_stream_.is_valid();
}
void URLLoader::RecordBodyReadFromNetBeforePausedIfNeeded() {
if (!url_request_)
return;
if (update_body_read_before_paused_)
body_read_before_paused_ = url_request_->GetRawBodyBytes();
if (body_read_before_paused_ != -1) {
if (!url_request_->was_cached()) {
UMA_HISTOGRAM_COUNTS_1M("Network.URLLoader.BodyReadFromNetBeforePaused",
body_read_before_paused_);
} else {
DVLOG(1) << "The request has been paused, but "
<< "Network.URLLoader.BodyReadFromNetBeforePaused is not "
<< "reported because the response body may be from cache. "
<< "body_read_before_paused_: " << body_read_before_paused_;
}
}
}
void URLLoader::ResumeStart() {
url_request_->LogUnblocked();
url_request_->Start();
}
void URLLoader::OnBeforeSendHeadersComplete(
net::CompletionOnceCallback callback,
net::HttpRequestHeaders* out_headers,
int result,
const base::Optional<net::HttpRequestHeaders>& headers) {
if (headers)
*out_headers = headers.value();
std::move(callback).Run(result);
}
void URLLoader::OnHeadersReceivedComplete(
net::CompletionOnceCallback callback,
scoped_refptr<net::HttpResponseHeaders>* out_headers,
GURL* out_allowed_unsafe_redirect_url,
int result,
const base::Optional<std::string>& headers,
const GURL& allowed_unsafe_redirect_url) {
if (headers) {
*out_headers =
base::MakeRefCounted<net::HttpResponseHeaders>(headers.value());
}
*out_allowed_unsafe_redirect_url = allowed_unsafe_redirect_url;
std::move(callback).Run(result);
}
void URLLoader::CompleteBlockedResponse(int error_code,
bool should_report_corb_blocking) {
// The response headers and body shouldn't yet be sent to the URLLoaderClient.
DCHECK(response_);
DCHECK(consumer_handle_.is_valid());
// Tell the URLLoaderClient that the response has been completed.
URLLoaderCompletionStatus status;
status.error_code = error_code;
status.completion_time = base::TimeTicks::Now();
status.encoded_data_length = 0;
status.encoded_body_length = 0;
status.decoded_body_length = 0;
status.should_report_corb_blocking = should_report_corb_blocking;
url_loader_client_->OnComplete(status);
// Reset the connection to the URLLoaderClient. This helps ensure that we
// won't accidentally leak any data to the renderer from this point on.
url_loader_client_.reset();
}
URLLoader::BlockResponseForCorbResult URLLoader::BlockResponseForCorb() {
// The response headers and body shouldn't yet be sent to the URLLoaderClient.
DCHECK(response_);
DCHECK(consumer_handle_.is_valid());
// Send stripped headers to the real URLLoaderClient.
CrossOriginReadBlocking::SanitizeBlockedResponse(response_);
url_loader_client_->OnReceiveResponse(response_->head);
// Send empty body to the real URLLoaderClient.
mojo::DataPipe empty_data_pipe(kBlockedBodyAllocationSize);
empty_data_pipe.producer_handle.reset();
url_loader_client_->OnStartLoadingResponseBody(
std::move(empty_data_pipe.consumer_handle));
// Tell the real URLLoaderClient that the response has been completed.
bool should_report_corb_blocking =
corb_analyzer_->ShouldReportBlockedResponse();
if (corb_detachable_) {
// TODO(lukasza): https://crbug.com/827633#c5: Consider passing net::ERR_OK
// instead. net::ERR_ABORTED was chosen for consistency with the old CORB
// implementation that used to go through DetachableResourceHandler.
CompleteBlockedResponse(net::ERR_ABORTED, should_report_corb_blocking);
} else {
// CORB responses are reported as a success.
CompleteBlockedResponse(net::OK, should_report_corb_blocking);
}
// If the factory is asking to complete requests of this type, then we need to
// continue processing the response to make sure the network cache is
// populated. Otherwise we can cancel the request.
if (corb_detachable_) {
// Discard any remaining callbacks or data by rerouting the pipes to
// EmptyURLLoaderClient (deleting |self_ptr| when the URL request
// completes).
mojom::URLLoaderPtr self_ptr;
binding_.Close();
binding_.Bind(mojo::MakeRequest(&self_ptr));
binding_.set_connection_error_handler(
base::BindOnce(&URLLoader::OnConnectionError, base::Unretained(this)));
EmptyURLLoaderClient::DrainURLRequest(
mojo::MakeRequest(&url_loader_client_), std::move(self_ptr));
// Ask the caller to continue processing the request.
return kContinueRequest;
}
// Delete self and cancel the request - the caller doesn't need to continue.
//
// DeleteSelf is posted asynchronously, to make sure that the callers (e.g.
// URLLoader::OnResponseStarted and/or URLLoader::DidRead instance methods)
// can still safely dereference |this|.
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::BindOnce(&URLLoader::DeleteSelf, weak_ptr_factory_.GetWeakPtr()));
return kWillCancelRequest;
}
} // namespace network