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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_CHROMEOS_POLICY_ENROLLMENT_HANDLER_CHROMEOS_H_
#define CHROME_BROWSER_CHROMEOS_POLICY_ENROLLMENT_HANDLER_CHROMEOS_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/chromeos/policy/device_cloud_policy_initializer.h"
#include "chrome/browser/chromeos/policy/device_cloud_policy_validator.h"
#include "chrome/browser/chromeos/policy/enterprise_install_attributes.h"
#include "components/policy/core/common/cloud/cloud_policy_client.h"
#include "components/policy/core/common/cloud/cloud_policy_store.h"
#include "google_apis/gaia/gaia_oauth_client.h"
#include "policy/proto/device_management_backend.pb.h"
namespace base {
class SequencedTaskRunner;
}
namespace chromeos {
class DeviceSettingsService;
}
namespace policy {
class DeviceCloudPolicyStoreChromeOS;
class ServerBackedStateKeysBroker;
// Implements the logic that establishes enterprise enrollment for Chromium OS
// devices. The process is as follows:
// 1. Given an auth token, register with the policy service.
// 2. Download the initial policy blob from the service.
// 3. Verify the policy blob. Everything up to this point doesn't touch device
// state.
// 4. Download the OAuth2 authorization code for device-level API access.
// 5. Download the OAuth2 refresh token for device-level API access and store
// it.
// 6. Establish the device lock in installation-time attributes.
// 7. Store the policy blob and API refresh token.
class EnrollmentHandlerChromeOS : public CloudPolicyClient::Observer,
public CloudPolicyStore::Observer,
public gaia::GaiaOAuthClient::Delegate {
public:
typedef DeviceCloudPolicyInitializer::AllowedDeviceModes
AllowedDeviceModes;
typedef DeviceCloudPolicyInitializer::EnrollmentCallback
EnrollmentCallback;
// |store| and |install_attributes| must remain valid for the life time of the
// enrollment handler. |allowed_device_modes| determines what device modes
// are acceptable. If the mode specified by the server is not acceptable,
// enrollment will fail with an EnrollmentStatus indicating
// STATUS_REGISTRATION_BAD_MODE.
// |management_mode| should be either ENTERPRISE_MANAGED or CONSUMER_MANAGED.
EnrollmentHandlerChromeOS(
DeviceCloudPolicyStoreChromeOS* store,
EnterpriseInstallAttributes* install_attributes,
ServerBackedStateKeysBroker* state_keys_broker,
chromeos::DeviceSettingsService* device_settings_service,
scoped_ptr<CloudPolicyClient> client,
scoped_refptr<base::SequencedTaskRunner> background_task_runner,
const std::string& auth_token,
const std::string& client_id,
bool is_auto_enrollment,
const std::string& requisition,
const AllowedDeviceModes& allowed_device_modes,
enterprise_management::PolicyData::ManagementMode management_mode,
const EnrollmentCallback& completion_callback);
virtual ~EnrollmentHandlerChromeOS();
// Starts the enrollment process and reports the result to
// |completion_callback_|.
void StartEnrollment();
// Releases the client.
scoped_ptr<CloudPolicyClient> ReleaseClient();
// CloudPolicyClient::Observer:
virtual void OnPolicyFetched(CloudPolicyClient* client) override;
virtual void OnRegistrationStateChanged(CloudPolicyClient* client) override;
virtual void OnRobotAuthCodesFetched(CloudPolicyClient* client) override;
virtual void OnClientError(CloudPolicyClient* client) override;
// CloudPolicyStore::Observer:
virtual void OnStoreLoaded(CloudPolicyStore* store) override;
virtual void OnStoreError(CloudPolicyStore* store) override;
// GaiaOAuthClient::Delegate:
virtual void OnGetTokensResponse(const std::string& refresh_token,
const std::string& access_token,
int expires_in_seconds) override;
virtual void OnRefreshTokenResponse(const std::string& access_token,
int expires_in_seconds) override;
virtual void OnOAuthError() override;
virtual void OnNetworkError(int response_code) override;
private:
// Indicates what step of the process is currently pending. These steps need
// to be listed in the order they are traversed in.
enum EnrollmentStep {
STEP_PENDING, // Not started yet.
STEP_STATE_KEYS, // Waiting for state keys to become available.
STEP_LOADING_STORE, // Waiting for |store_| to initialize.
STEP_REGISTRATION, // Currently registering the client.
STEP_POLICY_FETCH, // Fetching policy.
STEP_VALIDATION, // Policy validation.
STEP_ROBOT_AUTH_FETCH, // Fetching device API auth code.
STEP_ROBOT_AUTH_REFRESH, // Fetching device API refresh token.
STEP_LOCK_DEVICE, // Writing installation-time attributes.
STEP_STORE_TOKEN_AND_ID, // Storing DM token and virtual device ID.
STEP_STORE_ROBOT_AUTH, // Encrypting & writing robot refresh token.
STEP_STORE_POLICY, // Storing policy and API refresh token.
STEP_FINISHED, // Enrollment process finished, no further action.
};
// Handles the response to a request for server-backed state keys.
void HandleStateKeysResult(const std::vector<std::string>& state_keys);
// Starts registration if the store is initialized.
void StartRegistration();
// Handles the policy validation result, proceeding with device lock if
// successful.
void HandlePolicyValidationResult(DeviceCloudPolicyValidator* validator);
// Calls InstallAttributes::LockDevice() for enterprise enrollment and
// DeviceSettingsService::SetManagementSettings() for consumer
// enrollment.
void StartLockDevice();
// Checks the status after SetManagementSettings() is done. Proceeds to
// robot auth code storing if successful.
void HandleSetManagementSettingsDone();
// Handle callback from InstallAttributes::LockDevice() and retry on failure.
void HandleLockDeviceResult(
EnterpriseInstallAttributes::LockResult lock_result);
// Initiates storing of robot auth token.
void StartStoreRobotAuth();
// Handles completion of the robot token store operation.
void HandleStoreRobotAuthTokenResult(bool result);
// Drops any ongoing actions.
void Stop();
// Reports the result of the enrollment process to the initiator.
void ReportResult(EnrollmentStatus status);
DeviceCloudPolicyStoreChromeOS* store_;
EnterpriseInstallAttributes* install_attributes_;
ServerBackedStateKeysBroker* state_keys_broker_;
chromeos::DeviceSettingsService* device_settings_service_;
scoped_ptr<CloudPolicyClient> client_;
scoped_refptr<base::SequencedTaskRunner> background_task_runner_;
scoped_ptr<gaia::GaiaOAuthClient> gaia_oauth_client_;
std::string auth_token_;
std::string client_id_;
bool is_auto_enrollment_;
std::string requisition_;
std::string current_state_key_;
std::string refresh_token_;
AllowedDeviceModes allowed_device_modes_;
enterprise_management::PolicyData::ManagementMode management_mode_;
EnrollmentCallback completion_callback_;
// The device mode as received in the registration request.
DeviceMode device_mode_;
// The validated policy response info to be installed in the store.
scoped_ptr<enterprise_management::PolicyFetchResponse> policy_;
std::string username_;
std::string device_id_;
std::string request_token_;
// Current enrollment step.
EnrollmentStep enrollment_step_;
// Total amount of time in milliseconds spent waiting for lockbox
// initialization.
int lockbox_init_duration_;
base::WeakPtrFactory<EnrollmentHandlerChromeOS> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(EnrollmentHandlerChromeOS);
};
} // namespace policy
#endif // CHROME_BROWSER_CHROMEOS_POLICY_ENROLLMENT_HANDLER_CHROMEOS_H_
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