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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/quick_pair/repository/unauthenticated_http_fetcher.h"
#include "ash/quick_pair/common/fast_pair/fast_pair_http_result.h"
#include "ash/quick_pair/common/quick_pair_browser_delegate.h"
#include "components/cross_device/logging/logging.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 "services/network/public/mojom/url_response_head.mojom.h"
namespace {
// Max size set to 2MB. This is well over the expected maximum for our
// expected responses, however it can be increased if needed in the future.
constexpr int kMaxDownloadBytes = 2 * 1024 * 1024;
} // namespace
namespace ash {
namespace quick_pair {
UnauthenticatedHttpFetcher::UnauthenticatedHttpFetcher(
const net::NetworkTrafficAnnotationTag& traffic_annotation)
: traffic_annotation_(traffic_annotation) {}
UnauthenticatedHttpFetcher::~UnauthenticatedHttpFetcher() = default;
void UnauthenticatedHttpFetcher::ExecuteGetRequest(
const GURL& url,
FetchCompleteCallback callback) {
CD_LOG(VERBOSE, Feature::FP) << __func__ << ": executing request to: " << url;
auto resource_request = std::make_unique<network::ResourceRequest>();
resource_request->url = url;
resource_request->method = "GET";
resource_request->credentials_mode = network::mojom::CredentialsMode::kOmit;
auto loader = network::SimpleURLLoader::Create(std::move(resource_request),
traffic_annotation_);
// Enable an immediate retry for client-side transient failures:
// DNS resolution errors and network configuration changes.
// Server HTTP 5xx errors are not retried.
int retry_mode = network::SimpleURLLoader::RETRY_ON_NETWORK_CHANGE |
network::SimpleURLLoader::RETRY_ON_NAME_NOT_RESOLVED;
loader->SetRetryOptions(/*max_retries=*/1, retry_mode);
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory =
QuickPairBrowserDelegate::Get()->GetURLLoaderFactory();
if (!url_loader_factory) {
CD_LOG(WARNING, Feature::FP)
<< __func__ << ": No SharedURLLoaderFactory is available.";
std::move(callback).Run(std::nullopt, nullptr);
return;
}
auto* loader_ptr = loader.get();
loader_ptr->DownloadToString(
url_loader_factory.get(),
base::BindOnce(&UnauthenticatedHttpFetcher::OnComplete,
weak_ptr_factory_.GetWeakPtr(), std::move(loader),
std::move(callback)),
kMaxDownloadBytes);
}
void UnauthenticatedHttpFetcher::OnComplete(
std::unique_ptr<network::SimpleURLLoader> simple_loader,
FetchCompleteCallback callback,
std::optional<std::string> response_body) {
std::unique_ptr<FastPairHttpResult> http_result =
std::make_unique<FastPairHttpResult>(
/*net_error=*/simple_loader->NetError(),
/*head=*/simple_loader->ResponseInfo());
if (http_result->IsSuccess()) {
CD_LOG(VERBOSE, Feature::FP)
<< "Successfully fetched " << simple_loader->GetContentSize()
<< " bytes from " << simple_loader->GetFinalURL();
std::move(callback).Run(std::move(response_body), std::move(http_result));
return;
}
CD_LOG(WARNING, Feature::FP)
<< "Downloading to string from " << simple_loader->GetFinalURL()
<< " failed: " << http_result->ToString();
// TODO(jonmann): Implement retries with back-off.
std::move(callback).Run(std::nullopt, std::move(http_result));
}
} // namespace quick_pair
} // namespace ash
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