chrome/browser/chromeos/app_mode/kiosk_app_manager.h

   1 // Copyright 2013 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_APP_MODE_KIOSK_APP_MANAGER_H_
   6 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_MANAGER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/callback_forward.h"
  13 #include "base/lazy_instance.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/scoped_vector.h"
  16 #include "base/observer_list.h"
  17 #include "chrome/browser/chromeos/app_mode/kiosk_app_data_delegate.h"
  18 #include "chrome/browser/chromeos/extensions/external_cache.h"
  19 #include "chrome/browser/chromeos/policy/enterprise_install_attributes.h"
  20 #include "chrome/browser/chromeos/settings/cros_settings.h"
  21 #include "ui/gfx/image/image_skia.h"
  22
  23 class PrefRegistrySimple;
  24 class Profile;
  25
  26 namespace base {
  27 class RefCountedString;
  28 }
  29
  30 namespace extensions {
  31 class Extension;
  32 class ExternalLoader;
  33 }
  34
  35 namespace chromeos {
  36
  37 class KioskAppData;
  38 class KioskAppExternalLoader;
  39 class KioskAppManagerObserver;
  40 class KioskExternalUpdater;
  41 class OwnerSettingsServiceChromeOS;
  42
  43 // KioskAppManager manages cached app data.
  44 class KioskAppManager : public KioskAppDataDelegate,
  45                         public ExternalCache::Delegate {
  46  public:
  47   enum ConsumerKioskAutoLaunchStatus {
  48     // Consumer kiosk mode auto-launch feature can be enabled on this machine.
  49     CONSUMER_KIOSK_AUTO_LAUNCH_CONFIGURABLE,
  50     // Consumer kiosk auto-launch feature is enabled on this machine.
  51     CONSUMER_KIOSK_AUTO_LAUNCH_ENABLED,
  52     // Consumer kiosk mode auto-launch feature is disabled and cannot any longer
  53     // be enabled on this machine.
  54     CONSUMER_KIOSK_AUTO_LAUNCH_DISABLED,
  55   };
  56
  57   typedef base::Callback<void(bool success)> EnableKioskAutoLaunchCallback;
  58   typedef base::Callback<void(ConsumerKioskAutoLaunchStatus status)>
  59       GetConsumerKioskAutoLaunchStatusCallback;
  60
  61   // Struct to hold app info returned from GetApps() call.
  62   struct App {
  63     App(const KioskAppData& data,
  64         bool is_extension_pending,
  65         bool was_auto_launched_with_zero_delay);
  66     App();
  67     ~App();
  68
  69     std::string app_id;
  70     std::string user_id;
  71     std::string name;
  72     gfx::ImageSkia icon;
  73     bool is_loading;
  74     bool was_auto_launched_with_zero_delay;
  75   };
  76   typedef std::vector<App> Apps;
  77
  78   // Name of a dictionary that holds kiosk app info in Local State.
  79   // Sample layout:
  80   //   "kiosk": {
  81   //     "auto_login_enabled": true  //
  82   //   }
  83   static const char kKioskDictionaryName[];
  84   static const char kKeyApps[];
  85   static const char kKeyAutoLoginState[];
  86
  87   // Sub directory under DIR_USER_DATA to store cached icon files.
  88   static const char kIconCacheDir[];
  89
  90   // Sub directory under DIR_USER_DATA to store cached crx files.
  91   static const char kCrxCacheDir[];
  92
  93   // Sub directory under DIR_USER_DATA to store unpacked crx file for validating
  94   // its signature.
  95   static const char kCrxUnpackDir[];
  96
  97   // Gets the KioskAppManager instance, which is lazily created on first call..
  98   static KioskAppManager* Get();
  99
 100   // Prepares for shutdown and calls CleanUp() if needed.
 101   static void Shutdown();
 102
 103   // Registers kiosk app entries in local state.
 104   static void RegisterPrefs(PrefRegistrySimple* registry);
 105
 106   // Removes cryptohomes which could not be removed during the previous session.
 107   static void RemoveObsoleteCryptohomes();
 108
 109   // Initiates reading of consumer kiosk mode auto-launch status.
 110   void GetConsumerKioskAutoLaunchStatus(
 111       const GetConsumerKioskAutoLaunchStatusCallback& callback);
 112
 113   // Enables consumer kiosk mode app auto-launch feature. Upon completion,
 114   // |callback| will be invoked with outcome of this operation.
 115   void EnableConsumerKioskAutoLaunch(
 116       const EnableKioskAutoLaunchCallback& callback);
 117
 118   // Returns true if this device is consumer kiosk auto launch enabled.
 119   bool IsConsumerKioskDeviceWithAutoLaunch();
 120
 121   // Returns auto launcher app id or an empty string if there is none.
 122   std::string GetAutoLaunchApp() const;
 123
 124   // Sets |app_id| as the app to auto launch at start up.
 125   void SetAutoLaunchApp(const std::string& app_id,
 126                         OwnerSettingsServiceChromeOS* service);
 127
 128   // Returns true if there is a pending auto-launch request.
 129   bool IsAutoLaunchRequested() const;
 130
 131   // Returns true if owner/policy enabled auto launch.
 132   bool IsAutoLaunchEnabled() const;
 133
 134   // Enable auto launch setter.
 135   void SetEnableAutoLaunch(bool value);
 136
 137   // Adds/removes a kiosk app by id. When removed, all locally cached data
 138   // will be removed as well.
 139   void AddApp(const std::string& app_id, OwnerSettingsServiceChromeOS* service);
 140   void RemoveApp(const std::string& app_id,
 141                  OwnerSettingsServiceChromeOS* service);
 142
 143   // Gets info of all apps that have no meta data load error.
 144   void GetApps(Apps* apps) const;
 145
 146   // Gets app data for the given app id. Returns true if |app_id| is known and
 147   // |app| is populated. Otherwise, return false.
 148   bool GetApp(const std::string& app_id, App* app) const;
 149
 150   // Gets whether the bailout shortcut is disabled.
 151   bool GetDisableBailoutShortcut() const;
 152
 153   // Clears locally cached app data.
 154   void ClearAppData(const std::string& app_id);
 155
 156   // Updates app data from the |app| in |profile|. |app| is provided to cover
 157   // the case of app update case where |app| is the new version and is not
 158   // finished installing (e.g. because old version is still running). Otherwise,
 159   // |app| could be NULL and the current installed app in |profile| will be
 160   // used.
 161   void UpdateAppDataFromProfile(const std::string& app_id,
 162                                 Profile* profile,
 163                                 const extensions::Extension* app);
 164
 165   void RetryFailedAppDataFetch();
 166
 167   // Returns true if the app is found in cache.
 168   bool HasCachedCrx(const std::string& app_id) const;
 169
 170   // Gets the path and version of the cached crx with |app_id|.
 171   // Returns true if the app is found in cache.
 172   bool GetCachedCrx(const std::string& app_id,
 173                     base::FilePath* file_path,
 174                     std::string* version) const;
 175
 176   void AddObserver(KioskAppManagerObserver* observer);
 177   void RemoveObserver(KioskAppManagerObserver* observer);
 178
 179   // Creates extensions::ExternalLoader for installing kiosk apps during their
 180   // first time launch.
 181   extensions::ExternalLoader* CreateExternalLoader();
 182
 183   // Installs kiosk app with |id| from cache.
 184   void InstallFromCache(const std::string& id);
 185
 186   void UpdateExternalCache();
 187
 188   // Monitors kiosk external update from usb stick.
 189   void MonitorKioskExternalUpdate();
 190
 191   // Invoked when kiosk app cache has been updated.
 192   void OnKioskAppCacheUpdated(const std::string& app_id);
 193
 194   // Invoked when kiosk app updating from usb stick has been completed.
 195   // |success| indicates if all the updates are completed successfully.
 196   void OnKioskAppExternalUpdateComplete(bool success);
 197
 198   // Installs the validated external extension into cache.
 199   void PutValidatedExternalExtension(
 200       const std::string& app_id,
 201       const base::FilePath& crx_path,
 202       const std::string& version,
 203       const ExternalCache::PutExternalExtensionCallback& callback);
 204
 205   bool external_loader_created() const { return external_loader_created_; }
 206
 207   // Notifies the KioskAppManager that a given app was auto-launched
 208   // automatically with no delay on startup. Certain privacy-sensitive
 209   // kiosk-mode behavior (such as network reporting) is only enabled for
 210   // kiosk apps that are immediately auto-launched on startup.
 211   void SetAppWasAutoLaunchedWithZeroDelay(const std::string& app_id);
 212
 213  private:
 214   friend struct base::DefaultLazyInstanceTraits<KioskAppManager>;
 215   friend struct base::DefaultDeleter<KioskAppManager>;
 216   friend class KioskAppManagerTest;
 217   friend class KioskTest;
 218   friend class KioskUpdateTest;
 219
 220   enum AutoLoginState {
 221     AUTOLOGIN_NONE      = 0,
 222     AUTOLOGIN_REQUESTED = 1,
 223     AUTOLOGIN_APPROVED  = 2,
 224     AUTOLOGIN_REJECTED  = 3,
 225   };
 226
 227   KioskAppManager();
 228   ~KioskAppManager() override;
 229
 230   // Stop all data loading and remove its dependency on CrosSettings.
 231   void CleanUp();
 232
 233   // Gets KioskAppData for the given app id.
 234   const KioskAppData* GetAppData(const std::string& app_id) const;
 235   KioskAppData* GetAppDataMutable(const std::string& app_id);
 236
 237   // Updates app data |apps_| based on CrosSettings.
 238   void UpdateAppData();
 239
 240   // KioskAppDataDelegate overrides:
 241   void GetKioskAppIconCacheDir(base::FilePath* cache_dir) override;
 242   void OnKioskAppDataChanged(const std::string& app_id) override;
 243   void OnKioskAppDataLoadFailure(const std::string& app_id) override;
 244
 245   // ExternalCache::Delegate:
 246   void OnExtensionListsUpdated(const base::DictionaryValue* prefs) override;
 247   void OnExtensionLoadedInCache(const std::string& id) override;
 248   void OnExtensionDownloadFailed(
 249       const std::string& id,
 250       extensions::ExtensionDownloaderDelegate::Error error) override;
 251
 252   // Callback for EnterpriseInstallAttributes::LockDevice() during
 253   // EnableConsumerModeKiosk() call.
 254   void OnLockDevice(
 255       const EnableKioskAutoLaunchCallback& callback,
 256       policy::EnterpriseInstallAttributes::LockResult result);
 257
 258   // Callback for EnterpriseInstallAttributes::ReadImmutableAttributes() during
 259   // GetConsumerKioskModeStatus() call.
 260   void OnReadImmutableAttributes(
 261       const GetConsumerKioskAutoLaunchStatusCallback& callback);
 262
 263   // Callback for reading handling checks of the owner public.
 264   void OnOwnerFileChecked(
 265       const GetConsumerKioskAutoLaunchStatusCallback& callback,
 266       bool* owner_present);
 267
 268   // Reads/writes auto login state from/to local state.
 269   AutoLoginState GetAutoLoginState() const;
 270   void SetAutoLoginState(AutoLoginState state);
 271
 272   void GetCrxCacheDir(base::FilePath* cache_dir);
 273   void GetCrxUnpackDir(base::FilePath* unpack_dir);
 274
 275   // True if machine ownership is already established.
 276   bool ownership_established_;
 277   ScopedVector<KioskAppData> apps_;
 278   std::string auto_launch_app_id_;
 279   std::string currently_auto_launched_with_zero_delay_app_;
 280   base::ObserverList<KioskAppManagerObserver, true> observers_;
 281
 282   scoped_ptr<CrosSettings::ObserverSubscription>
 283       local_accounts_subscription_;
 284   scoped_ptr<CrosSettings::ObserverSubscription>
 285       local_account_auto_login_id_subscription_;
 286
 287   scoped_ptr<ExternalCache> external_cache_;
 288
 289   scoped_ptr<KioskExternalUpdater> usb_stick_updater_;
 290
 291   // The extension external loader for installing kiosk app.
 292   bool external_loader_created_;
 293   base::WeakPtr<KioskAppExternalLoader> external_loader_;
 294
 295   DISALLOW_COPY_AND_ASSIGN(KioskAppManager);
 296 };
 297
 298 }  // namespace chromeos
 299
 300 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_MANAGER_H_