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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DOWNLOAD_PUBLIC_COMMON_DOWNLOAD_RESPONSE_HANDLER_H_
#define COMPONENTS_DOWNLOAD_PUBLIC_COMMON_DOWNLOAD_RESPONSE_HANDLER_H_
#include <optional>
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "components/download/public/common/download_create_info.h"
#include "components/download/public/common/download_export.h"
#include "components/download/public/common/download_source.h"
#include "components/download/public/common/download_stream.mojom.h"
#include "components/download/public/common/download_url_parameters.h"
#include "components/download/public/common/download_utils.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/cert/cert_status_flags.h"
#include "services/network/public/mojom/fetch_api.mojom-shared.h"
#include "services/network/public/mojom/url_loader.mojom.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "url/origin.h"
namespace download {
// This class is responsible for handling the server response for a download.
// It passes the DataPipeConsumerHandle and completion status to the download
// sink. The class is common to both navigation triggered downloads and
// context menu downloads
class COMPONENTS_DOWNLOAD_EXPORT DownloadResponseHandler
: public network::mojom::URLLoaderClient {
public:
// Class for handling the stream response.
class Delegate {
public:
virtual void OnResponseStarted(
std::unique_ptr<DownloadCreateInfo> download_create_info,
mojom::DownloadStreamHandlePtr stream_handle) = 0;
virtual void OnReceiveRedirect() = 0;
virtual void OnResponseCompleted() = 0;
virtual bool CanRequestURL(const GURL& url) = 0;
virtual void OnUploadProgress(uint64_t bytes_uploaded) = 0;
};
DownloadResponseHandler(
network::ResourceRequest* resource_request,
Delegate* delegate,
std::unique_ptr<DownloadSaveInfo> save_info,
bool is_parallel_request,
bool is_transient,
bool fetch_error_body,
network::mojom::RedirectMode cross_origin_redirects,
const DownloadUrlParameters::RequestHeadersType& request_headers,
const std::string& request_origin,
DownloadSource download_source,
bool require_safety_checks,
std::vector<GURL> url_chain,
bool is_background_mode);
DownloadResponseHandler(const DownloadResponseHandler&) = delete;
DownloadResponseHandler& operator=(const DownloadResponseHandler&) = delete;
~DownloadResponseHandler() override;
// network::mojom::URLLoaderClient
void OnReceiveEarlyHints(network::mojom::EarlyHintsPtr early_hints) override;
void OnReceiveResponse(
network::mojom::URLResponseHeadPtr head,
mojo::ScopedDataPipeConsumerHandle body,
std::optional<mojo_base::BigBuffer> cached_metadata) override;
void OnReceiveRedirect(const net::RedirectInfo& redirect_info,
network::mojom::URLResponseHeadPtr head) override;
void OnUploadProgress(int64_t current_position,
int64_t total_size,
OnUploadProgressCallback callback) override;
void OnTransferSizeUpdated(int32_t transfer_size_diff) override;
void OnComplete(const network::URLLoaderCompletionStatus& status) override;
private:
std::unique_ptr<DownloadCreateInfo> CreateDownloadCreateInfo(
const network::mojom::URLResponseHead& head);
// Helper method that is called when response is received.
void OnResponseStarted(mojom::DownloadStreamHandlePtr stream_handle);
const raw_ptr<Delegate> delegate_;
std::unique_ptr<DownloadCreateInfo> create_info_;
bool started_;
// Information needed to create DownloadCreateInfo when the time comes.
std::unique_ptr<DownloadSaveInfo> save_info_;
std::vector<GURL> url_chain_;
std::string method_;
GURL referrer_;
net::ReferrerPolicy referrer_policy_;
bool is_transient_;
bool fetch_error_body_;
network::mojom::RedirectMode cross_origin_redirects_;
url::Origin first_origin_;
DownloadUrlParameters::RequestHeadersType request_headers_;
std::string request_origin_;
DownloadSource download_source_;
net::CertStatus cert_status_ = 0;
bool has_strong_validators_;
std::optional<url::Origin> request_initiator_;
::network::mojom::CredentialsMode credentials_mode_;
std::optional<net::IsolationInfo> isolation_info_;
bool is_partial_request_;
bool completed_;
bool require_safety_checks_;
// The abort reason if this class decides to block the download.
DownloadInterruptReason abort_reason_;
// Mojo interface remote to send the completion status to the download sink.
mojo::Remote<mojom::DownloadStreamClient> client_remote_;
// Whether the download is running in background mode.
bool is_background_mode_;
};
} // namespace download
#endif // COMPONENTS_DOWNLOAD_PUBLIC_COMMON_DOWNLOAD_RESPONSE_HANDLER_H_
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