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// Copyright 2015 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 "chrome/browser/net/file_downloader.h"
#include "base/bind.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/task/post_task.h"
#include "base/task/task_traits.h"
#include "base/task_runner_util.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/storage_partition.h"
#include "net/base/load_flags.h"
#include "net/http/http_status_code.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
#include "services/network/public/cpp/simple_url_loader.h"
#include "url/gurl.h"
const int kNumFileDownloaderRetries = 1;
FileDownloader::FileDownloader(
const GURL& url,
const base::FilePath& path,
bool overwrite,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
DownloadFinishedCallback callback,
const net::NetworkTrafficAnnotationTag& traffic_annotation)
: url_loader_factory_(url_loader_factory),
callback_(std::move(callback)),
local_path_(path) {
auto resource_request = std::make_unique<network::ResourceRequest>();
resource_request->url = url;
resource_request->credentials_mode = network::mojom::CredentialsMode::kOmit;
simple_url_loader_ = network::SimpleURLLoader::Create(
std::move(resource_request), traffic_annotation);
simple_url_loader_->SetRetryOptions(
kNumFileDownloaderRetries,
network::SimpleURLLoader::RetryMode::RETRY_ON_NETWORK_CHANGE);
if (overwrite) {
simple_url_loader_->DownloadToTempFile(
url_loader_factory_.get(),
base::BindOnce(&FileDownloader::OnSimpleDownloadComplete,
base::Unretained(this)));
} else {
base::PostTaskAndReplyWithResult(
base::CreateTaskRunner(
{base::ThreadPool(), base::MayBlock(),
base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN})
.get(),
FROM_HERE, base::Bind(&base::PathExists, local_path_),
base::Bind(&FileDownloader::OnFileExistsCheckDone,
weak_ptr_factory_.GetWeakPtr()));
}
}
FileDownloader::~FileDownloader() {}
void FileDownloader::OnSimpleDownloadComplete(base::FilePath response_path) {
if (response_path.empty()) {
if (simple_url_loader_->ResponseInfo() &&
simple_url_loader_->ResponseInfo()->headers) {
int response_code =
simple_url_loader_->ResponseInfo()->headers->response_code();
DLOG(WARNING) << "HTTP error " << response_code
<< " while trying to download "
<< simple_url_loader_->GetFinalURL().spec();
}
std::move(callback_).Run(FAILED);
return;
}
base::PostTaskAndReplyWithResult(
base::CreateTaskRunner({base::ThreadPool(), base::MayBlock(),
base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN})
.get(),
FROM_HERE, base::Bind(&base::Move, response_path, local_path_),
base::Bind(&FileDownloader::OnFileMoveDone,
weak_ptr_factory_.GetWeakPtr()));
}
void FileDownloader::OnFileExistsCheckDone(bool exists) {
if (exists) {
std::move(callback_).Run(EXISTS);
} else {
simple_url_loader_->DownloadToTempFile(
url_loader_factory_.get(),
base::BindOnce(&FileDownloader::OnSimpleDownloadComplete,
base::Unretained(this)));
}
}
void FileDownloader::OnFileMoveDone(bool success) {
if (!success) {
DLOG(WARNING) << "Could not move file to "
<< local_path_.LossyDisplayName();
}
std::move(callback_).Run(success ? DOWNLOADED : FAILED);
}
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