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// Copyright 2018 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/enterprise/browser/controller/chrome_browser_cloud_management_helper.h"
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "components/enterprise/browser/controller/browser_dm_token_storage.h"
#include "components/policy/core/common/cloud/cloud_policy_client.h"
#include "components/policy/core/common/cloud/cloud_policy_client_registration_helper.h"
#include "components/policy/core/common/cloud/cloud_policy_core.h"
#include "components/policy/core/common/cloud/cloud_policy_manager.h"
#include "components/policy/core/common/cloud/cloud_policy_service.h"
#include "components/policy/core/common/cloud/device_management_service.h"
#include "components/policy/core/common/cloud/machine_level_user_cloud_policy_manager.h"
#include "components/policy/core/common/cloud/machine_level_user_cloud_policy_store.h"
#include "components/policy/core/common/policy_logger.h"
#include "components/prefs/pref_service.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
namespace policy {
namespace {
void OnPolicyFetchCompleted(bool success) {
VLOG(1) << "Policy fetch " << (success ? "succeeded" : "failed");
}
} // namespace
/* ChromeBrowserCloudManagementRegistrar */
ChromeBrowserCloudManagementRegistrar::ChromeBrowserCloudManagementRegistrar(
DeviceManagementService* device_management_service,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory)
: device_management_service_(device_management_service),
url_loader_factory_(url_loader_factory) {}
ChromeBrowserCloudManagementRegistrar::
~ChromeBrowserCloudManagementRegistrar() = default;
void ChromeBrowserCloudManagementRegistrar::
RegisterForCloudManagementWithEnrollmentToken(
const std::string& enrollment_token,
const std::string& client_id,
const ClientDataDelegate& client_data_delegate,
CloudManagementRegistrationCallback callback) {
VLOG_POLICY(1, CBCM_ENROLLMENT) << "Registering a CloudPolicyClient with "
"enrollment token and client id.";
DCHECK(!enrollment_token.empty());
DCHECK(!client_id.empty());
// If the DeviceManagementService is not yet initialized, start it up now.
device_management_service_->ScheduleInitialization(0);
// Create a new CloudPolicyClient for fetching the DMToken. This is
// distinct from the CloudPolicyClient in MachineLevelUserCloudPolicyManager,
// which is used for policy fetching. The client created here should only be
// used for enrollment and gets destroyed when |registration_helper_| is
// reset.
std::unique_ptr<CloudPolicyClient> policy_client =
std::make_unique<CloudPolicyClient>(
device_management_service_, url_loader_factory_,
CloudPolicyClient::DeviceDMTokenCallback());
// Fire off the registration process. Callback keeps the CloudPolicyClient
// alive for the length of the registration process. Use the system
// request context because the user is not signed in to this profile.
registration_helper_ = std::make_unique<CloudPolicyClientRegistrationHelper>(
policy_client.get(),
enterprise_management::DeviceRegisterRequest::BROWSER);
// Check if token enrollment is mandatory
bool is_enrollment_mandatory =
BrowserDMTokenStorage::Get()->ShouldDisplayErrorMessageOnFailure();
registration_helper_->StartRegistrationWithEnrollmentToken(
enrollment_token, client_id, client_data_delegate,
is_enrollment_mandatory,
base::BindOnce(&ChromeBrowserCloudManagementRegistrar::
CallCloudManagementRegistrationCallback,
base::Unretained(this), std::move(policy_client),
std::move(callback)));
}
void ChromeBrowserCloudManagementRegistrar::
CallCloudManagementRegistrationCallback(
std::unique_ptr<CloudPolicyClient> client,
CloudManagementRegistrationCallback callback) {
registration_helper_.reset();
if (callback)
std::move(callback).Run(client->dm_token(), client->client_id());
}
/* MachineLevelUserCloudPolicyFetcher */
MachineLevelUserCloudPolicyFetcher::MachineLevelUserCloudPolicyFetcher(
MachineLevelUserCloudPolicyManager* policy_manager,
PrefService* local_state,
DeviceManagementService* device_management_service,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory)
: policy_manager_(policy_manager),
local_state_(local_state),
device_management_service_(device_management_service),
url_loader_factory_(url_loader_factory) {
std::unique_ptr<CloudPolicyClient> client =
std::make_unique<CloudPolicyClient>(
device_management_service_, url_loader_factory,
CloudPolicyClient::DeviceDMTokenCallback());
InitializeManager(std::move(client));
}
MachineLevelUserCloudPolicyFetcher::~MachineLevelUserCloudPolicyFetcher() =
default;
void MachineLevelUserCloudPolicyFetcher::SetupRegistrationAndFetchPolicy(
const DMToken& dm_token,
const std::string& client_id) {
policy_manager_->core()->client()->SetupRegistration(
dm_token.value(), client_id, std::vector<std::string>());
policy_manager_->store()->SetupRegistration(dm_token, client_id);
DCHECK(policy_manager_->IsClientRegistered());
policy_manager_->core()->service()->RefreshPolicy(
base::BindOnce(&OnPolicyFetchCompleted),
PolicyFetchReason::kRegistrationChanged);
}
void MachineLevelUserCloudPolicyFetcher::AddClientObserver(
CloudPolicyClient::Observer* observer) {
if (policy_manager_)
policy_manager_->AddClientObserver(observer);
}
void MachineLevelUserCloudPolicyFetcher::RemoveClientObserver(
CloudPolicyClient::Observer* observer) {
if (policy_manager_)
policy_manager_->RemoveClientObserver(observer);
}
void MachineLevelUserCloudPolicyFetcher::Disconnect() {
cloud_policy_service_observation_.Reset();
if (policy_manager_) {
policy_manager_->DisconnectAndRemovePolicy();
}
}
void MachineLevelUserCloudPolicyFetcher::
OnCloudPolicyServiceInitializationCompleted() {
// Client will be registered before policy fetch. A non-registered client
// means there is no validated policy cache on the disk while the device has
// been enrolled already. Hence, we need to fetch the
// policy based on the global dm_token.
//
// Note that Chrome will not fetch policy again immediately here if DM server
// returns a policy that Chrome is not able to validate.
if (!policy_manager_->IsClientRegistered()) {
VLOG_POLICY(1, POLICY_FETCHING)
<< "OnCloudPolicyServiceInitializationCompleted: Fetching policy "
"when there is no valid local cache.";
TryToFetchPolicy();
}
}
void MachineLevelUserCloudPolicyFetcher::InitializeManager(
std::unique_ptr<CloudPolicyClient> client) {
policy_manager_->Connect(local_state_, std::move(client));
cloud_policy_service_observation_.Observe(policy_manager_->core()->service());
// If CloudPolicyStore is already initialized then
// |OnCloudPolicyServiceInitializationCompleted| has already fired. Fetch
// policy if CloudPolicyClient hasn't been registered which means there is no
// valid policy cache.
if (policy_manager_->store()->is_initialized() &&
!policy_manager_->IsClientRegistered()) {
VLOG_POLICY(1, POLICY_FETCHING)
<< "InitializeManager: Fetching policy when there is no valid "
"local cache.";
TryToFetchPolicy();
}
}
void MachineLevelUserCloudPolicyFetcher::TryToFetchPolicy() {
DMToken dm_token = BrowserDMTokenStorage::Get()->RetrieveDMToken();
std::string client_id = BrowserDMTokenStorage::Get()->RetrieveClientId();
if (dm_token.is_valid() && !client_id.empty())
SetupRegistrationAndFetchPolicy(dm_token, client_id);
}
} // namespace policy
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