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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/metrics/cros_pre_consent_metrics_manager.h"
#include <optional>
#include "ash/constants/ash_features.h"
#include "base/check.h"
#include "base/feature_list.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/memory/ptr_util.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "chrome/browser/ash/login/startup_utils.h"
#include "chrome/browser/ash/policy/core/browser_policy_connector_ash.h"
#include "chrome/browser/ash/policy/core/device_cloud_policy_store_ash.h"
#include "chrome/browser/ash/settings/device_settings_service.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/browser_process_platform_part_ash.h"
#include "chrome/browser/metrics/metrics_reporting_state.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/metrics/metrics_service_client.h"
#include "components/metrics_services_manager/metrics_services_manager.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
namespace metrics {
// Singleton pointer to the instance of CrOSPreConsentMetricsManager.
static CrOSPreConsentMetricsManager* g_instance = nullptr;
// Path for pre_consent_complete file. This file is created when the pre-consent
// is considered completed depending on the type of user.
//
// See class comment on CrOSPreConsentMetricsManager for details on when this
// file is written.
const char kCrOSPreConsentCompletePath[] =
"/home/chronos/.pre_consent_complete";
// The upload interval for metrics during pre-consent metrics.
const base::TimeDelta kPreConsentUploadInterval = base::Seconds(120);
// Writes the .pre_consent_complete file in chronos home. This signifies that
// the primary user has been set and their consent for metrics has been set.
void WritePreConsentCompleteFile(std::optional<base::FilePath> test_path) {
base::FilePath path = base::FilePath(kCrOSPreConsentCompletePath);
if (test_path.has_value()) {
path = std::move(test_path).value();
}
base::WriteFile(path, "");
}
// static
std::unique_ptr<CrOSPreConsentMetricsManager>
CrOSPreConsentMetricsManager::MaybeCreate() {
// If this path exists then this object doesn't need to be created.
if (!ash::features::IsOobePreConsentMetricsEnabled() ||
base::PathExists(base::FilePath(kCrOSPreConsentCompletePath))) {
return nullptr;
}
// Handle when a ChromeOS device upgrades to the version this functionality
// was added that has completed OOBE.
if (ash::StartupUtils::IsDeviceRegistered()) {
base::ThreadPool::PostTask(
FROM_HERE, base::MayBlock(),
base::BindOnce(&WritePreConsentCompleteFile,
base::FilePath(kCrOSPreConsentCompletePath)));
return nullptr;
}
return base::WrapUnique(new CrOSPreConsentMetricsManager());
}
CrOSPreConsentMetricsManager::~CrOSPreConsentMetricsManager() {
g_instance = nullptr;
}
void CrOSPreConsentMetricsManager::Enable() {
if (is_enabled_) {
return;
}
is_enabled_ = true;
VLOG(1) << "Pre-consent metrics enabled";
// Force enable metrics. This will enable metrics and populate all appropriate
// preferences.
ChangeMetricsReportingState(
is_enabled_,
ChangeMetricsReportingStateCalledFrom::kCrosMetricsPreConsent);
// Propagate the change to metrics services. This will create the Client ID
// that will be used if the user consents to metrics. If pre-consent is being
// disabled do not update the permissions as it should not be changed.
g_browser_process->GetMetricsServicesManager()->UpdateUploadPermissions();
// Register CrOSPreConsentMetricsManager as the observer for policy change to
// get notified when device is enrolled.
cloud_policy_store_observation_.Observe(g_browser_process->platform_part()
->browser_policy_connector_ash()
->GetDeviceCloudPolicyManager()
->device_store());
}
void CrOSPreConsentMetricsManager::Disable() {
if (!is_enabled_) {
return;
}
is_enabled_ = false;
VLOG(1) << "Pre-consent metrics disabled";
task_runner_->PostTask(FROM_HERE,
base::BindOnce(&WritePreConsentCompleteFile,
completed_path_for_testing_));
}
std::optional<base::TimeDelta> CrOSPreConsentMetricsManager::GetUploadInterval()
const {
if (is_enabled_) {
return kPreConsentUploadInterval;
}
return std::nullopt;
}
void CrOSPreConsentMetricsManager::SetCompletedPathForTesting(
const base::FilePath& path) {
completed_path_for_testing_ = path;
}
void CrOSPreConsentMetricsManager::PostToIOTaskRunnerForTesting(
base::Location here,
base::OnceClosure callback) {
task_runner_->PostTask(here, std::move(callback));
}
// static
CrOSPreConsentMetricsManager* CrOSPreConsentMetricsManager::Get() {
return g_instance;
}
CrOSPreConsentMetricsManager::CrOSPreConsentMetricsManager()
: task_runner_(
base::ThreadPool::CreateSequencedTaskRunner(base::MayBlock())) {
CHECK(g_instance == nullptr) << "CrOSPreConsentMetricsManager already exists";
g_instance = this;
}
void CrOSPreConsentMetricsManager::OnStoreError(
policy::CloudPolicyStore* store) {}
void CrOSPreConsentMetricsManager::OnStoreLoaded(
policy::CloudPolicyStore* store) {
cloud_policy_store_observation_.Reset();
Disable();
}
} // namespace metrics
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