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// Copyright 2012 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/policy/core/common/cloud/cloud_policy_manager.h"
#include <memory>
#include <optional>
#include <utility>
#include "base/check_op.h"
#include "base/feature_list.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "build/build_config.h"
#include "components/policy/core/common/cloud/cloud_policy_client.h"
#include "components/policy/core/common/cloud/cloud_policy_service.h"
#include "components/policy/core/common/policy_bundle.h"
#include "components/policy/core/common/policy_map.h"
#include "components/policy/core/common/schema_registry.h"
#include "components/prefs/pref_service.h"
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
#include "components/policy/core/common/cloud/resource_cache.h"
#endif
namespace policy {
BASE_FEATURE(kPublishPolicyWithoutWaiting,
"PublishPolicyWithoutWaiting",
base::FEATURE_ENABLED_BY_DEFAULT);
CloudPolicyManager::CloudPolicyManager(
const std::string& policy_type,
const std::string& settings_entity_id,
std::unique_ptr<CloudPolicyStore> cloud_policy_store,
const scoped_refptr<base::SequencedTaskRunner>& task_runner,
network::NetworkConnectionTrackerGetter network_connection_tracker_getter)
: store_(std::move(cloud_policy_store)),
core_(policy_type,
settings_entity_id,
store_.get(),
task_runner,
std::move(network_connection_tracker_getter)),
waiting_for_policy_refresh_(false) {}
CloudPolicyManager::~CloudPolicyManager() = default;
bool CloudPolicyManager::IsClientRegistered() const {
return client() && client()->is_registered();
}
void CloudPolicyManager::Init(SchemaRegistry* registry) {
ConfigurationPolicyProvider::Init(registry);
store()->AddObserver(this);
// If the underlying store is already initialized, pretend it was loaded now.
// Note: It is not enough to just copy OnStoreLoaded's contents here because
// subclasses can override it.
if (store()->is_initialized())
OnStoreLoaded(store());
else
store()->Load();
}
void CloudPolicyManager::Shutdown() {
component_policy_service_.reset();
core_.Disconnect();
store()->RemoveObserver(this);
ConfigurationPolicyProvider::Shutdown();
}
bool CloudPolicyManager::IsInitializationComplete(PolicyDomain domain) const {
if (domain == POLICY_DOMAIN_CHROME)
return store()->is_initialized();
if (ComponentCloudPolicyService::SupportsDomain(domain) &&
component_policy_service_) {
return component_policy_service_->is_initialized();
}
return true;
}
bool CloudPolicyManager::IsFirstPolicyLoadComplete(PolicyDomain domain) const {
return store()->first_policies_loaded();
}
void CloudPolicyManager::RefreshPolicies(PolicyFetchReason reason) {
if (service()) {
waiting_for_policy_refresh_ = true;
service()->RefreshPolicy(
base::BindOnce(&CloudPolicyManager::OnRefreshComplete,
base::Unretained(this)),
reason);
} else {
OnRefreshComplete(false);
}
}
void CloudPolicyManager::OnStoreLoaded(CloudPolicyStore* cloud_policy_store) {
DCHECK_EQ(store(), cloud_policy_store);
CheckAndPublishPolicy();
}
void CloudPolicyManager::OnStoreError(CloudPolicyStore* cloud_policy_store) {
DCHECK_EQ(store(), cloud_policy_store);
// Publish policy (even though it hasn't changed) in order to signal load
// complete on the ConfigurationPolicyProvider interface. Technically, this
// is only required on the first load, but doesn't hurt in any case.
CheckAndPublishPolicy();
}
void CloudPolicyManager::OnComponentCloudPolicyUpdated() {
CheckAndPublishPolicy();
}
bool CloudPolicyManager::CanPublishPolicy() const {
if (!IsInitializationComplete(POLICY_DOMAIN_CHROME)) {
return false;
}
if (!waiting_for_policy_refresh_) {
return true;
}
// Component policy service initializaion is async. Its first publish might be
// blocked by first cloud policy refresh.
//
// Skip the `waiting_for_policy_refresh_` check if component policies are
// ready but never published.
if (base::FeatureList::IsEnabled(kPublishPolicyWithoutWaiting) &&
component_policy_service_ &&
component_policy_service_->is_initialized() &&
!is_component_policy_published_) {
return true;
}
return false;
}
void CloudPolicyManager::CheckAndPublishPolicy() {
if (!CanPublishPolicy()) {
return;
}
PolicyBundle bundle;
GetChromePolicy(
&bundle.Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string())));
if (component_policy_service_ &&
component_policy_service_->is_initialized()) {
bundle.MergeFrom(component_policy_service_->policy());
is_component_policy_published_ = true;
}
UpdatePolicy(std::move(bundle));
}
void CloudPolicyManager::GetChromePolicy(PolicyMap* policy_map) {
*policy_map = store()->policy_map().Clone();
}
void CloudPolicyManager::CreateComponentCloudPolicyService(
const std::string& policy_type,
const base::FilePath& policy_cache_path,
CloudPolicyClient* client,
SchemaRegistry* schema_registry) {
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
// Init() must have been called.
CHECK(schema_registry);
// Called at most once.
CHECK(!component_policy_service_);
// The core can't be connected yet.
// See the comments on ComponentCloudPolicyService for the details.
CHECK(!core()->client());
if (policy_cache_path.empty())
return;
// TODO(emaxx, 729082): Make ComponentCloudPolicyStore (and other
// implementation details of it) not use the blocking task runner whenever
// possible because the real file operations are only done by ResourceCache,
// and most of the rest doesn't need the blocking behaviour. Also
// ComponentCloudPolicyService's |backend_task_runner| and |cache| must live
// on the same task runner.
const auto task_runner =
base::ThreadPool::CreateSequencedTaskRunner({base::MayBlock()});
std::unique_ptr<ResourceCache> resource_cache(new ResourceCache(
policy_cache_path, task_runner, /* max_cache_size */ std::nullopt));
component_policy_service_ = std::make_unique<ComponentCloudPolicyService>(
policy_type, this, schema_registry, core(), client,
std::move(resource_cache), task_runner);
#endif // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
}
void CloudPolicyManager::ClearAndDestroyComponentCloudPolicyService() {
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
if (component_policy_service_) {
component_policy_service_->ClearCache();
component_policy_service_.reset();
}
#endif // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
}
void CloudPolicyManager::OnRefreshComplete(bool success) {
waiting_for_policy_refresh_ = false;
CheckAndPublishPolicy();
}
} // namespace policy
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