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// Copyright (c) 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 "content/browser/appcache/appcache_update_url_loader_request.h"
#include "base/bind.h"
#include "content/browser/appcache/appcache_request_handler.h"
#include "content/browser/appcache/appcache_update_url_fetcher.h"
#include "net/base/ip_endpoint.h"
#include "net/http/http_response_info.h"
#include "net/url_request/url_request_context.h"
namespace content {
namespace {
constexpr net::NetworkTrafficAnnotationTag kAppCacheTrafficAnnotation =
net::DefineNetworkTrafficAnnotation("appcache_update_job", R"(
semantics {
sender: "HTML5 AppCache System"
description:
"Web pages can include a link to a manifest file which lists "
"resources to be cached for offline access. The AppCache system"
"retrieves those resources in the background."
trigger:
"User visits a web page containing a <html manifest=manifestUrl> "
"tag, or navigates to a document retrieved from an existing appcache "
"and some resource should be updated."
data: "None"
destination: WEBSITE
}
policy {
cookies_allowed: YES
cookies_store: "user"
setting:
"Users can control this feature via the 'Cookies' setting under "
"'Privacy, Content settings'. If cookies are disabled for a single "
"site, appcaches are disabled for the site only. If they are totally "
"disabled, all appcache requests will be stopped."
chrome_policy {
DefaultCookiesSetting {
DefaultCookiesSetting: 2
}
}
})");
}
AppCacheUpdateJob::UpdateURLLoaderRequest::~UpdateURLLoaderRequest() {}
void AppCacheUpdateJob::UpdateURLLoaderRequest::Start() {
// If we are in tests mode, we don't need to issue network requests.
if (AppCacheRequestHandler::IsRunningInTests())
return;
network::mojom::URLLoaderClientPtr client;
client_binding_.Bind(mojo::MakeRequest(&client));
loader_factory_getter_->GetNetworkFactoryWithCORBEnabled()
->CreateLoaderAndStart(
mojo::MakeRequest(&url_loader_), -1, -1,
network::mojom::kURLLoadOptionSendSSLInfoWithResponse, request_,
std::move(client),
net::MutableNetworkTrafficAnnotationTag(kAppCacheTrafficAnnotation));
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::SetExtraRequestHeaders(
const net::HttpRequestHeaders& headers) {
request_.headers = headers;
}
GURL AppCacheUpdateJob::UpdateURLLoaderRequest::GetURL() const {
return request_.url;
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::SetLoadFlags(int flags) {
request_.load_flags = flags;
}
int AppCacheUpdateJob::UpdateURLLoaderRequest::GetLoadFlags() const {
return request_.load_flags;
}
std::string AppCacheUpdateJob::UpdateURLLoaderRequest::GetMimeType() const {
return response_.mime_type;
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::SetSiteForCookies(
const GURL& site_for_cookies) {
request_.site_for_cookies = site_for_cookies;
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::SetInitiator(
const base::Optional<url::Origin>& initiator) {
request_.request_initiator = initiator;
}
net::HttpResponseHeaders*
AppCacheUpdateJob::UpdateURLLoaderRequest::GetResponseHeaders() const {
return response_.headers.get();
}
int AppCacheUpdateJob::UpdateURLLoaderRequest::GetResponseCode() const {
if (response_.headers)
return response_.headers->response_code();
return 0;
}
const net::HttpResponseInfo&
AppCacheUpdateJob::UpdateURLLoaderRequest::GetResponseInfo() const {
return *http_response_info_;
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::Read() {
DCHECK(!read_requested_);
read_requested_ = true;
// Initiate a read from the pipe if we have not done so.
MaybeStartReading();
}
int AppCacheUpdateJob::UpdateURLLoaderRequest::Cancel() {
client_binding_.Close();
url_loader_ = nullptr;
handle_watcher_.Cancel();
handle_.reset();
response_ = network::ResourceResponseHead();
http_response_info_.reset(nullptr);
read_requested_ = false;
return 0;
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::OnReceiveResponse(
const network::ResourceResponseHead& response_head) {
response_ = response_head;
// TODO(ananta/michaeln)
// Populate other fields in the HttpResponseInfo class. It would be good to
// have a helper function which populates the HttpResponseInfo structure from
// the ResourceResponseHead structure.
http_response_info_.reset(new net::HttpResponseInfo());
if (response_head.ssl_info.has_value())
http_response_info_->ssl_info = *response_head.ssl_info;
http_response_info_->headers = response_head.headers;
http_response_info_->was_fetched_via_spdy =
response_head.was_fetched_via_spdy;
http_response_info_->was_alpn_negotiated = response_head.was_alpn_negotiated;
http_response_info_->alpn_negotiated_protocol =
response_head.alpn_negotiated_protocol;
http_response_info_->connection_info = response_head.connection_info;
http_response_info_->remote_endpoint = response_head.remote_endpoint;
fetcher_->OnResponseStarted(net::OK);
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::OnReceiveRedirect(
const net::RedirectInfo& redirect_info,
const network::ResourceResponseHead& response_head) {
response_ = response_head;
fetcher_->OnReceivedRedirect(redirect_info);
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::OnUploadProgress(
int64_t current_position,
int64_t total_size,
OnUploadProgressCallback ack_callback) {
NOTIMPLEMENTED();
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::OnReceiveCachedMetadata(
const std::vector<uint8_t>& data) {
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::OnTransferSizeUpdated(
int32_t transfer_size_diff) {
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::OnStartLoadingResponseBody(
mojo::ScopedDataPipeConsumerHandle body) {
handle_ = std::move(body);
handle_watcher_.Watch(
handle_.get(), MOJO_HANDLE_SIGNAL_READABLE,
base::BindRepeating(
&AppCacheUpdateJob::UpdateURLLoaderRequest::StartReading,
base::Unretained(this)));
// Initiate a read from the pipe if we have a pending Read() request.
MaybeStartReading();
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::OnComplete(
const network::URLLoaderCompletionStatus& status) {
response_status_ = status;
// We inform the URLFetcher about a failure only here. For the success case
// OnResponseCompleted() is invoked by URLFetcher::OnReadCompleted().
if (status.error_code != net::OK)
fetcher_->OnResponseCompleted(status.error_code);
}
AppCacheUpdateJob::UpdateURLLoaderRequest::UpdateURLLoaderRequest(
URLLoaderFactoryGetter* loader_factory_getter,
const GURL& url,
int buffer_size,
URLFetcher* fetcher)
: fetcher_(fetcher),
loader_factory_getter_(loader_factory_getter),
client_binding_(this),
buffer_size_(buffer_size),
handle_watcher_(FROM_HERE,
mojo::SimpleWatcher::ArmingPolicy::MANUAL,
base::SequencedTaskRunnerHandle::Get()),
read_requested_(false) {
request_.url = url;
request_.method = "GET";
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::StartReading(
MojoResult unused) {
DCHECK(read_requested_);
// Get the handle_ from a previous read operation if we have one.
if (pending_read_) {
DCHECK(pending_read_->IsComplete());
handle_ = pending_read_->ReleaseHandle();
pending_read_ = nullptr;
}
uint32_t available = 0;
MojoResult result = network::MojoToNetPendingBuffer::BeginRead(
&handle_, &pending_read_, &available);
DCHECK_NE(result, MOJO_RESULT_BUSY);
if (result == MOJO_RESULT_SHOULD_WAIT) {
handle_watcher_.ArmOrNotify();
return;
}
read_requested_ = false;
if (result == MOJO_RESULT_FAILED_PRECONDITION) {
DCHECK_EQ(response_status_.error_code, net::OK);
fetcher_->OnReadCompleted(nullptr, 0);
return;
}
if (result != MOJO_RESULT_OK) {
fetcher_->OnResponseCompleted(net::ERR_FAILED);
return;
}
int bytes_to_be_read = std::min<int>(buffer_size_, available);
auto buffer = base::MakeRefCounted<network::MojoToNetIOBuffer>(
pending_read_.get(), bytes_to_be_read);
fetcher_->OnReadCompleted(buffer.get(), bytes_to_be_read);
}
void AppCacheUpdateJob::UpdateURLLoaderRequest::MaybeStartReading() {
if (!read_requested_)
return;
if (handle_watcher_.IsWatching())
handle_watcher_.ArmOrNotify();
}
} // namespace content
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