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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/safety_check/update_check_helper.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "components/safety_check/url_constants.h"
#include "net/base/load_flags.h"
#include "net/http/http_status_code.h"
#include "net/traffic_annotation/network_traffic_annotation.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"
namespace safety_check {
namespace {
// Request timeout of 5 seconds to not interrupt the completion of Safety check.
// The user can always start a new Safety check if a request times out.
constexpr base::TimeDelta kConnectionTimeout = base::Seconds(5);
// Maximum number of retries for sending the request.
constexpr int kMaxRetries = 2;
const net::NetworkTrafficAnnotationTag kTrafficAnnotation =
net::DefineNetworkTrafficAnnotation("safety_check_update_connectivity",
R"(
semantics {
sender: "Safety Check Browser Updates Check"
description:
"If during the updates check part of the Safety check the version "
"updater returns a generic error status, this request is used to "
"determine whether it is caused by connectivity issues."
trigger:
"When the user started the Safety check in settings and the browser "
"updates check fails."
data:
"No data is sent with the request."
destination: GOOGLE_OWNED_SERVICE
}
policy {
cookies_allowed: NO
setting:
"No user-visible setting for this feature because this is part of "
"user-triggered Safety check, which explicitly includes an update "
"check."
policy_exception_justification:
"Not implemented, considered not required."
})");
} // namespace
UpdateCheckHelper::UpdateCheckHelper(
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory)
: url_loader_factory_(url_loader_factory) {}
UpdateCheckHelper::~UpdateCheckHelper() = default;
void UpdateCheckHelper::CheckConnectivity(
ConnectivityCheckCallback connection_check_callback) {
result_callback_ = std::move(connection_check_callback);
// Create a request with no data or cookies.
auto resource_request = std::make_unique<network::ResourceRequest>();
resource_request->url = GURL(kConnectivityCheckUrl);
resource_request->credentials_mode = network::mojom::CredentialsMode::kOmit;
resource_request->load_flags = net::LOAD_DISABLE_CACHE;
resource_request->redirect_mode = ::network::mojom::RedirectMode::kError;
url_loader_ = network::SimpleURLLoader::Create(std::move(resource_request),
kTrafficAnnotation);
url_loader_->SetTimeoutDuration(kConnectionTimeout);
url_loader_->SetRetryOptions(
kMaxRetries,
network::SimpleURLLoader::RetryMode::RETRY_ON_5XX |
network::SimpleURLLoader::RetryMode::RETRY_ON_NETWORK_CHANGE);
url_loader_->DownloadHeadersOnly(
url_loader_factory_.get(),
base::BindOnce(&UpdateCheckHelper::OnURLLoadComplete,
base::Unretained(this)));
}
UpdateCheckHelper::UpdateCheckHelper() = default;
void UpdateCheckHelper::OnURLLoadComplete(
scoped_refptr<net::HttpResponseHeaders> headers) {
DCHECK(url_loader_);
bool connected = headers && headers->response_code() == net::HTTP_NO_CONTENT;
url_loader_.reset();
std::move(result_callback_).Run(connected);
}
} // namespace safety_check
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