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.
5 #ifndef CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_PROVIDER_H_
6 #define CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_PROVIDER_H_
13 #include "base/basictypes.h"
14 #include "base/callback.h"
15 #include "base/gtest_prod_util.h"
16 #include "base/memory/weak_ptr.h"
17 #include "base/prefs/pref_value_map.h"
18 #include "chrome/browser/chromeos/policy/proto/chrome_device_policy.pb.h"
19 #include "chrome/browser/chromeos/settings/device_settings_service.h"
20 #include "chromeos/settings/cros_settings_provider.h"
21 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
27 namespace enterprise_management {
28 class ChromeDeviceSettingsProto;
29 } // namespace enterprise_management
33 // CrosSettingsProvider implementation that works with device settings.
34 class DeviceSettingsProvider : public CrosSettingsProvider,
35 public DeviceSettingsService::Observer {
37 // The callback type that is called to get the device mode.
38 typedef base::Callback<policy::DeviceMode(void)> GetDeviceModeCallback;
40 DeviceSettingsProvider(const NotifyObserversCallback& notify_cb,
41 DeviceSettingsService* device_settings_service);
42 virtual ~DeviceSettingsProvider();
44 // Returns true if |path| is handled by this provider.
45 static bool IsDeviceSetting(const std::string& name);
47 // CrosSettingsProvider implementation.
48 virtual const base::Value* Get(const std::string& path) const OVERRIDE;
49 virtual TrustedStatus PrepareTrustedValues(
50 const base::Closure& callback) OVERRIDE;
51 virtual bool HandlesSetting(const std::string& path) const OVERRIDE;
54 // CrosSettingsProvider implementation:
55 virtual void DoSet(const std::string& path,
56 const base::Value& value) OVERRIDE;
58 // DeviceSettingsService::Observer implementation:
59 virtual void OwnershipStatusChanged() OVERRIDE;
60 virtual void DeviceSettingsUpdated() OVERRIDE;
62 // Populates in-memory cache from the local_state cache that is used to store
63 // device settings before the device is owned and to speed up policy
64 // availability before the policy blob is fetched on boot.
65 void RetrieveCachedData();
67 // Stores a value from the |pending_changes_| queue in the device settings.
68 // If the device is not owned yet the data ends up only in the local_state
69 // cache and is serialized once ownership is acquired.
72 // Parses the policy data and fills in |values_cache_|.
73 void UpdateValuesCache(
74 const enterprise_management::PolicyData& policy_data,
75 const enterprise_management::ChromeDeviceSettingsProto& settings,
76 TrustedStatus trusted_status);
78 // Applies the metrics policy and if not set migrates the legacy file.
79 void ApplyMetricsSetting(bool use_file, bool new_value);
81 // Applies the data roaming policy.
82 void ApplyRoamingSetting(bool new_value);
83 void ApplyRoamingSettingFromProto(
84 const enterprise_management::ChromeDeviceSettingsProto& settings);
86 // Applies any changes of the policies that are not handled by the respective
88 void ApplySideEffects(
89 const enterprise_management::ChromeDeviceSettingsProto& settings);
91 // In case of missing policy blob we should verify if this is upgrade of
92 // machine owned from pre version 12 OS and the user never touched the device
93 // settings. In this case revert to defaults and let people in until the owner
94 // comes and changes that.
95 bool MitigateMissingPolicy();
97 // Checks if the current cache value can be trusted for being representative
98 // for the disk cache.
99 TrustedStatus RequestTrustedEntity();
101 // Invokes UpdateFromService() to synchronize with |device_settings_service_|,
102 // then triggers the next store operation if applicable.
103 void UpdateAndProceedStoring();
105 // Re-reads state from |device_settings_service_|, adjusts
106 // |trusted_status_| and calls UpdateValuesCache() if applicable. Returns true
107 // if new settings have been loaded.
108 bool UpdateFromService();
110 // Sends |device_settings_| to |device_settings_service_| for signing and
111 // storage in session_manager.
112 void StoreDeviceSettings();
114 // Checks the current ownership status to see whether the device owner is
115 // logged in and writes the data accumulated in |migration_values_| to proper
117 void AttemptMigration();
119 // Pending callbacks that need to be invoked after settings verification.
120 std::vector<base::Closure> callbacks_;
122 DeviceSettingsService* device_settings_service_;
123 mutable PrefValueMap migration_values_;
125 TrustedStatus trusted_status_;
126 DeviceSettingsService::OwnershipStatus ownership_status_;
128 // The device settings as currently reported through the CrosSettingsProvider
129 // interface. This may be different from the actual current device settings
130 // (which can be obtained from |device_settings_service_|) in case the device
131 // does not have an owner yet or there are pending changes that have not yet
132 // been written to session_manager.
133 enterprise_management::ChromeDeviceSettingsProto device_settings_;
135 // A cache of values, indexed by the settings keys served through the
136 // CrosSettingsProvider interface. This is always kept in sync with the raw
137 // data found in |device_settings_|.
138 PrefValueMap values_cache_;
140 // This is a queue for set requests, because those need to be sequential.
141 typedef std::pair<std::string, base::Value*> PendingQueueElement;
142 std::deque<PendingQueueElement> pending_changes_;
144 // Weak pointer factory for creating store operation callbacks.
145 base::WeakPtrFactory<DeviceSettingsProvider> store_callback_factory_;
147 friend class DeviceSettingsProviderTest;
148 FRIEND_TEST_ALL_PREFIXES(DeviceSettingsProviderTest,
149 InitializationTestUnowned);
150 FRIEND_TEST_ALL_PREFIXES(DeviceSettingsProviderTest,
151 PolicyFailedPermanentlyNotification);
152 FRIEND_TEST_ALL_PREFIXES(DeviceSettingsProviderTest, PolicyLoadNotification);
153 DISALLOW_COPY_AND_ASSIGN(DeviceSettingsProvider);
156 } // namespace chromeos
158 #endif // CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_PROVIDER_H_