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// 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 "components/download/internal/common/resource_downloader.h"
#include <memory>
#include "components/download/public/common/download_url_loader_factory_getter.h"
#include "components/download/public/common/stream_handle_input_stream.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
namespace network {
struct ResourceResponseHead;
}
namespace download {
// This object monitors the URLLoaderCompletionStatus change when
// ResourceDownloader is asking |delegate_| whether download can proceed.
class URLLoaderStatusMonitor : public network::mojom::URLLoaderClient {
public:
using URLLoaderStatusChangeCallback =
base::OnceCallback<void(const network::URLLoaderCompletionStatus&)>;
explicit URLLoaderStatusMonitor(URLLoaderStatusChangeCallback callback);
~URLLoaderStatusMonitor() override = default;
// network::mojom::URLLoaderClient
void OnReceiveResponse(
const network::ResourceResponseHead& head,
network::mojom::DownloadedTempFilePtr downloaded_file) override {}
void OnReceiveRedirect(const net::RedirectInfo& redirect_info,
const network::ResourceResponseHead& head) override {}
void OnDataDownloaded(int64_t data_length, int64_t encoded_length) override {}
void OnUploadProgress(int64_t current_position,
int64_t total_size,
OnUploadProgressCallback callback) override {}
void OnReceiveCachedMetadata(const std::vector<uint8_t>& data) override {}
void OnTransferSizeUpdated(int32_t transfer_size_diff) override {}
void OnStartLoadingResponseBody(
mojo::ScopedDataPipeConsumerHandle body) override {}
void OnComplete(const network::URLLoaderCompletionStatus& status) override;
private:
URLLoaderStatusChangeCallback callback_;
DISALLOW_COPY_AND_ASSIGN(URLLoaderStatusMonitor);
};
URLLoaderStatusMonitor::URLLoaderStatusMonitor(
URLLoaderStatusChangeCallback callback)
: callback_(std::move(callback)) {}
void URLLoaderStatusMonitor::OnComplete(
const network::URLLoaderCompletionStatus& status) {
std::move(callback_).Run(status);
}
// static
std::unique_ptr<ResourceDownloader> ResourceDownloader::BeginDownload(
base::WeakPtr<UrlDownloadHandler::Delegate> delegate,
std::unique_ptr<DownloadUrlParameters> params,
std::unique_ptr<network::ResourceRequest> request,
scoped_refptr<download::DownloadURLLoaderFactoryGetter>
url_loader_factory_getter,
const GURL& site_url,
const GURL& tab_url,
const GURL& tab_referrer_url,
uint32_t download_id,
bool is_parallel_request,
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
auto downloader = std::make_unique<ResourceDownloader>(
delegate, std::move(request), params->render_process_host_id(),
params->render_frame_host_routing_id(), site_url, tab_url,
tab_referrer_url, download_id, task_runner,
std::move(url_loader_factory_getter));
downloader->Start(std::move(params), is_parallel_request);
return downloader;
}
// static
std::unique_ptr<ResourceDownloader>
ResourceDownloader::InterceptNavigationResponse(
base::WeakPtr<UrlDownloadHandler::Delegate> delegate,
std::unique_ptr<network::ResourceRequest> resource_request,
int render_process_id,
int render_frame_id,
const GURL& site_url,
const GURL& tab_url,
const GURL& tab_referrer_url,
std::vector<GURL> url_chain,
const scoped_refptr<network::ResourceResponse>& response,
net::CertStatus cert_status,
network::mojom::URLLoaderClientEndpointsPtr url_loader_client_endpoints,
scoped_refptr<download::DownloadURLLoaderFactoryGetter>
url_loader_factory_getter,
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
auto downloader = std::make_unique<ResourceDownloader>(
delegate, std::move(resource_request), render_process_id, render_frame_id,
site_url, tab_url, tab_referrer_url, download::DownloadItem::kInvalidId,
task_runner, std::move(url_loader_factory_getter));
downloader->InterceptResponse(std::move(response), std::move(url_chain),
cert_status,
std::move(url_loader_client_endpoints));
return downloader;
}
ResourceDownloader::ResourceDownloader(
base::WeakPtr<UrlDownloadHandler::Delegate> delegate,
std::unique_ptr<network::ResourceRequest> resource_request,
int render_process_id,
int render_frame_id,
const GURL& site_url,
const GURL& tab_url,
const GURL& tab_referrer_url,
uint32_t download_id,
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
scoped_refptr<download::DownloadURLLoaderFactoryGetter>
url_loader_factory_getter)
: delegate_(delegate),
resource_request_(std::move(resource_request)),
download_id_(download_id),
render_process_id_(render_process_id),
render_frame_id_(render_frame_id),
site_url_(site_url),
tab_url_(tab_url),
tab_referrer_url_(tab_referrer_url),
delegate_task_runner_(task_runner),
url_loader_factory_getter_(std::move(url_loader_factory_getter)),
weak_ptr_factory_(this) {}
ResourceDownloader::~ResourceDownloader() = default;
void ResourceDownloader::Start(
std::unique_ptr<DownloadUrlParameters> download_url_parameters,
bool is_parallel_request) {
callback_ = download_url_parameters->callback();
guid_ = download_url_parameters->guid();
// Set up the URLLoaderClient.
url_loader_client_ = std::make_unique<DownloadResponseHandler>(
resource_request_.get(), this,
std::make_unique<DownloadSaveInfo>(
download_url_parameters->GetSaveInfo()),
is_parallel_request, download_url_parameters->is_transient(),
download_url_parameters->fetch_error_body(),
download_url_parameters->request_headers(),
download_url_parameters->request_origin(),
download_url_parameters->download_source(),
std::vector<GURL>(1, resource_request_->url));
network::mojom::URLLoaderClientPtr url_loader_client_ptr;
url_loader_client_binding_ =
std::make_unique<mojo::Binding<network::mojom::URLLoaderClient>>(
url_loader_client_.get(), mojo::MakeRequest(&url_loader_client_ptr));
// Set up the URLLoader
network::mojom::URLLoaderRequest url_loader_request =
mojo::MakeRequest(&url_loader_);
url_loader_factory_getter_->GetURLLoaderFactory()->CreateLoaderAndStart(
std::move(url_loader_request),
0, // routing_id
0, // request_id
network::mojom::kURLLoadOptionSendSSLInfoWithResponse,
*(resource_request_.get()), std::move(url_loader_client_ptr),
net::MutableNetworkTrafficAnnotationTag(
download_url_parameters->GetNetworkTrafficAnnotation()));
url_loader_->SetPriority(net::RequestPriority::IDLE,
0 /* intra_priority_value */);
}
void ResourceDownloader::InterceptResponse(
const scoped_refptr<network::ResourceResponse>& response,
std::vector<GURL> url_chain,
net::CertStatus cert_status,
network::mojom::URLLoaderClientEndpointsPtr endpoints) {
// Set the URLLoader.
url_loader_.Bind(std::move(endpoints->url_loader));
// Create the new URLLoaderClient that will intercept the navigation.
url_loader_client_ = std::make_unique<DownloadResponseHandler>(
resource_request_.get(), this, std::make_unique<DownloadSaveInfo>(),
false, /* is_parallel_request */
false, /* is_transient */
false, /* fetch_error_body */
download::DownloadUrlParameters::RequestHeadersType(),
std::string(), /* request_origin */
download::DownloadSource::NAVIGATION, std::move(url_chain));
// Simulate on the new URLLoaderClient calls that happened on the old client.
response->head.cert_status = cert_status;
url_loader_client_->OnReceiveResponse(
response->head, network::mojom::DownloadedTempFilePtr());
// Bind the new client.
url_loader_client_binding_ =
std::make_unique<mojo::Binding<network::mojom::URLLoaderClient>>(
url_loader_client_.get(), std::move(endpoints->url_loader_client));
}
void ResourceDownloader::OnResponseStarted(
std::unique_ptr<DownloadCreateInfo> download_create_info,
mojom::DownloadStreamHandlePtr stream_handle) {
download_create_info->download_id = download_id_;
download_create_info->guid = guid_;
download_create_info->site_url = site_url_;
download_create_info->tab_url = tab_url_;
download_create_info->tab_referrer_url = tab_referrer_url_;
download_create_info->render_process_id = render_process_id_;
download_create_info->render_frame_id = render_frame_id_;
delegate_task_runner_->PostTask(
FROM_HERE,
base::BindOnce(
&UrlDownloadHandler::Delegate::OnUrlDownloadStarted, delegate_,
std::move(download_create_info),
std::make_unique<StreamHandleInputStream>(std::move(stream_handle)),
std::move(url_loader_factory_getter_), callback_));
}
void ResourceDownloader::OnReceiveRedirect() {
url_loader_->FollowRedirect(base::nullopt);
}
} // namespace download
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