chrome/browser/chromeos/policy/enrollment_handler_chromeos.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_POLICY_ENROLLMENT_HANDLER_CHROMEOS_H_
   6 #define CHROME_BROWSER_CHROMEOS_POLICY_ENROLLMENT_HANDLER_CHROMEOS_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
  16 #include "chrome/browser/chromeos/policy/device_cloud_policy_validator.h"
  17 #include "chrome/browser/chromeos/policy/enterprise_install_attributes.h"
  18 #include "components/policy/core/common/cloud/cloud_policy_client.h"
  19 #include "components/policy/core/common/cloud/cloud_policy_store.h"
  20 #include "google_apis/gaia/gaia_oauth_client.h"
  21
  22 namespace base {
  23 class SequencedTaskRunner;
  24 }
  25
  26 namespace chromeos {
  27 class DeviceOAuth2TokenService;
  28 }
  29
  30 namespace enterprise_management {
  31 class PolicyFetchResponse;
  32 }
  33
  34 namespace policy {
  35
  36 // Implements the logic that establishes enterprise enrollment for Chromium OS
  37 // devices. The process is as follows:
  38 //   1. Given an auth token, register with the policy service.
  39 //   2. Download the initial policy blob from the service.
  40 //   3. Verify the policy blob. Everything up to this point doesn't touch device
  41 //      state.
  42 //   4. Download the OAuth2 authorization code for device-level API access.
  43 //   5. Download the OAuth2 refresh token for device-level API access and store
  44 //      it.
  45 //   6. Establish the device lock in installation-time attributes.
  46 //   7. Store the policy blob and API refresh token.
  47 class EnrollmentHandlerChromeOS : public CloudPolicyClient::Observer,
  48                                   public CloudPolicyStore::Observer,
  49                                   public gaia::GaiaOAuthClient::Delegate {
  50  public:
  51   typedef DeviceCloudPolicyManagerChromeOS::AllowedDeviceModes
  52       AllowedDeviceModes;
  53   typedef DeviceCloudPolicyManagerChromeOS::EnrollmentCallback
  54       EnrollmentCallback;
  55
  56   // |store| and |install_attributes| must remain valid for the life time of the
  57   // enrollment handler. |allowed_device_modes| determines what device modes
  58   // are acceptable. If the mode specified by the server is not acceptable,
  59   // enrollment will fail with an EnrollmentStatus indicating
  60   // STATUS_REGISTRATION_BAD_MODE.
  61   EnrollmentHandlerChromeOS(
  62       DeviceCloudPolicyStoreChromeOS* store,
  63       EnterpriseInstallAttributes* install_attributes,
  64       scoped_ptr<CloudPolicyClient> client,
  65       scoped_refptr<base::SequencedTaskRunner> background_task_runner,
  66       const std::string& auth_token,
  67       const std::string& client_id,
  68       bool is_auto_enrollment,
  69       const std::string& requisition,
  70       const AllowedDeviceModes& allowed_device_modes,
  71       const EnrollmentCallback& completion_callback);
  72   virtual ~EnrollmentHandlerChromeOS();
  73
  74   // Starts the enrollment process and reports the result to
  75   // |completion_callback_|.
  76   void StartEnrollment();
  77
  78   // Releases the client.
  79   scoped_ptr<CloudPolicyClient> ReleaseClient();
  80
  81   // CloudPolicyClient::Observer:
  82   virtual void OnPolicyFetched(CloudPolicyClient* client) OVERRIDE;
  83   virtual void OnRegistrationStateChanged(CloudPolicyClient* client) OVERRIDE;
  84   virtual void OnRobotAuthCodesFetched(CloudPolicyClient* client) OVERRIDE;
  85   virtual void OnClientError(CloudPolicyClient* client) OVERRIDE;
  86
  87   // CloudPolicyStore::Observer:
  88   virtual void OnStoreLoaded(CloudPolicyStore* store) OVERRIDE;
  89   virtual void OnStoreError(CloudPolicyStore* store) OVERRIDE;
  90
  91   // GaiaOAuthClient::Delegate:
  92   virtual void OnGetTokensResponse(const std::string& refresh_token,
  93                                    const std::string& access_token,
  94                                    int expires_in_seconds) OVERRIDE;
  95   virtual void OnRefreshTokenResponse(const std::string& access_token,
  96                                       int expires_in_seconds) OVERRIDE;
  97   virtual void OnOAuthError() OVERRIDE;
  98   virtual void OnNetworkError(int response_code) OVERRIDE;
  99
 100  private:
 101   // Indicates what step of the process is currently pending. These steps need
 102   // to be listed in the order they are traversed in.
 103   enum EnrollmentStep {
 104     STEP_PENDING,             // Not started yet.
 105     STEP_LOADING_STORE,       // Waiting for |store_| to initialize.
 106     STEP_REGISTRATION,        // Currently registering the client.
 107     STEP_POLICY_FETCH,        // Fetching policy.
 108     STEP_VALIDATION,          // Policy validation.
 109     STEP_ROBOT_AUTH_FETCH,    // Fetching device API auth code.
 110     STEP_ROBOT_AUTH_REFRESH,  // Fetching device API refresh token.
 111     STEP_LOCK_DEVICE,         // Writing installation-time attributes.
 112     STEP_STORE_ROBOT_AUTH,    // Encrypting & writing robot refresh token.
 113     STEP_STORE_POLICY,        // Storing policy and API refresh token.
 114     STEP_FINISHED,            // Enrollment process finished, no further action.
 115   };
 116
 117   // Starts registration if the store is initialized.
 118   void AttemptRegistration();
 119
 120   // Handles the policy validation result, proceeding with installation-time
 121   // attributes locking if successful.
 122   void PolicyValidated(DeviceCloudPolicyValidator* validator);
 123
 124   // Calls LockDevice() and proceeds to policy installation. If unsuccessful,
 125   // reports the result. Actual installation or error report will be done in
 126   // HandleLockDeviceResult().
 127   void StartLockDevice(const std::string& user,
 128                        DeviceMode device_mode,
 129                        const std::string& device_id);
 130
 131   // Helper for StartLockDevice(). It performs the actual action based on
 132   // the result of LockDevice.
 133   void HandleLockDeviceResult(
 134       const std::string& user,
 135       DeviceMode device_mode,
 136       const std::string& device_id,
 137       EnterpriseInstallAttributes::LockResult lock_result);
 138
 139   // Drops any ongoing actions.
 140   void Stop();
 141
 142   // Reports the result of the enrollment process to the initiator.
 143   void ReportResult(EnrollmentStatus status);
 144
 145   // Continuation of OnStoreLoaded().
 146   void DidGetTokenService(chromeos::DeviceOAuth2TokenService* token_service);
 147
 148   DeviceCloudPolicyStoreChromeOS* store_;
 149   EnterpriseInstallAttributes* install_attributes_;
 150   scoped_ptr<CloudPolicyClient> client_;
 151   scoped_refptr<base::SequencedTaskRunner> background_task_runner_;
 152   scoped_ptr<gaia::GaiaOAuthClient> gaia_oauth_client_;
 153
 154   std::string auth_token_;
 155   std::string client_id_;
 156   bool is_auto_enrollment_;
 157   std::string requisition_;
 158   std::string refresh_token_;
 159   AllowedDeviceModes allowed_device_modes_;
 160   EnrollmentCallback completion_callback_;
 161
 162   // The device mode as received in the registration request.
 163   DeviceMode device_mode_;
 164
 165   // The validated policy response info to be installed in the store.
 166   scoped_ptr<enterprise_management::PolicyFetchResponse> policy_;
 167   std::string username_;
 168   std::string device_id_;
 169
 170   // Current enrollment step.
 171   EnrollmentStep enrollment_step_;
 172
 173   // Total amount of time in milliseconds spent waiting for lockbox
 174   // initialization.
 175   int lockbox_init_duration_;
 176
 177   // Used for locking the device and getting the OAuth2 token service.
 178   base::WeakPtrFactory<EnrollmentHandlerChromeOS> weak_ptr_factory_;
 179
 180   DISALLOW_COPY_AND_ASSIGN(EnrollmentHandlerChromeOS);
 181 };
 182
 183 }  // namespace policy
 184
 185 #endif  // CHROME_BROWSER_CHROMEOS_POLICY_ENROLLMENT_HANDLER_CHROMEOS_H_