1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.provider;
18 
19 import static android.provider.settings.backup.DeviceSpecificSettings.DEVICE_SPECIFIC_SETTINGS_TO_BACKUP;
20 
21 import static com.google.android.collect.Sets.newHashSet;
22 import static com.google.common.truth.Truth.assertWithMessage;
23 
24 import static java.lang.reflect.Modifier.isFinal;
25 import static java.lang.reflect.Modifier.isPublic;
26 import static java.lang.reflect.Modifier.isStatic;
27 
28 import android.platform.test.annotations.Presubmit;
29 import android.provider.settings.backup.GlobalSettings;
30 import android.provider.settings.backup.SecureSettings;
31 import android.provider.settings.backup.SystemSettings;
32 
33 import androidx.test.filters.SmallTest;
34 import androidx.test.runner.AndroidJUnit4;
35 
36 import org.junit.Test;
37 import org.junit.runner.RunWith;
38 
39 import java.lang.reflect.Field;
40 import java.util.Collections;
41 import java.util.HashSet;
42 import java.util.Set;
43 
44 /** Tests that ensure appropriate settings are backed up. */
45 @Presubmit
46 @RunWith(AndroidJUnit4.class)
47 @SmallTest
48 public class SettingsBackupTest {
49 
50     /**
51      * see {@link com.google.android.systemui.power.EnhancedEstimatesGoogleImpl} for more details
52      */
53     public static final String HYBRID_SYSUI_BATTERY_WARNING_FLAGS =
54             "hybrid_sysui_battery_warning_flags";
55 
56     /**
57      * The following denylists contain settings that should *not* be backed up and restored to
58      * another device.  As a general rule, anything that is not user configurable should be
59      * denied (and conversely, things that *are* user configurable *should* be backed up)
60      */
61     private static final Set<String> BACKUP_DENY_LIST_SYSTEM_SETTINGS =
62             newHashSet(
63                     Settings.System.ADVANCED_SETTINGS, // candidate for backup?
64                     Settings.System.ALARM_ALERT_CACHE, // internal cache
65                     Settings.System.APPEND_FOR_LAST_AUDIBLE, // suffix deprecated since API 2
66                     Settings.System.EGG_MODE, // I am the lolrus
67                     Settings.System.END_BUTTON_BEHAVIOR, // bug?
68                     Settings.System
69                             .HIDE_ROTATION_LOCK_TOGGLE_FOR_ACCESSIBILITY, // candidate for backup?
70                     Settings.System.LOCKSCREEN_DISABLED, // ?
71                     Settings.System.MEDIA_BUTTON_RECEIVER, // candidate for backup?
72                     Settings.System.MUTE_STREAMS_AFFECTED, //  candidate for backup?
73                     Settings.System.NOTIFICATION_SOUND_CACHE, // internal cache
74                     Settings.System.POINTER_LOCATION, // backup candidate?
75                     Settings.System.DEBUG_ENABLE_ENHANCED_CALL_BLOCKING, // used for testing only
76                     Settings.System.RINGTONE_CACHE, // internal cache
77                     Settings.System.SCREEN_BRIGHTNESS, // removed in P
78                     Settings.System.SETUP_WIZARD_HAS_RUN, // Only used by SuW
79                     Settings.System.SHOW_GTALK_SERVICE_STATUS, // candidate for backup?
80                     Settings.System.SHOW_TOUCHES,
81                     Settings.System.SHOW_KEY_PRESSES,
82                     Settings.System.SIP_ADDRESS_ONLY, // value, not a setting
83                     Settings.System.SIP_ALWAYS, // value, not a setting
84                     Settings.System.SYSTEM_LOCALES, // bug?
85                     Settings.System.USER_ROTATION, // backup candidate?
86                     Settings.System.VIBRATE_IN_SILENT, // deprecated?
87                     Settings.System.VOLUME_ACCESSIBILITY, // used internally, changing value will
88                                                           // not change volume
89                     Settings.System.VOLUME_ALARM, // deprecated since API 2?
90                     Settings.System.VOLUME_ASSISTANT, // candidate for backup?
91                     Settings.System.VOLUME_BLUETOOTH_SCO, // deprecated since API 2?
92                     Settings.System.VOLUME_MASTER, // candidate for backup?
93                     Settings.System.VOLUME_MUSIC, // deprecated since API 2?
94                     Settings.System.VOLUME_NOTIFICATION, // deprecated since API 2?
95                     Settings.System.VOLUME_RING, // deprecated since API 2?
96                     Settings.System.VOLUME_SYSTEM, // deprecated since API 2?
97                     Settings.System.VOLUME_VOICE, // deprecated since API 2?
98                     Settings.System.WHEN_TO_MAKE_WIFI_CALLS, // bug?
99                     Settings.System.WINDOW_ORIENTATION_LISTENER_LOG, // used for debugging only
100                     Settings.System.DESKTOP_MODE, // developer setting for internal prototyping
101                     Settings.System.MIN_REFRESH_RATE, // depends on hardware capabilities
102                     Settings.System.PEAK_REFRESH_RATE, // depends on hardware capabilities
103                     Settings.System.SCREEN_BRIGHTNESS_FLOAT,
104                     Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ,
105                     Settings.System.MULTI_AUDIO_FOCUS_ENABLED // form-factor/OEM specific
106                     );
107 
108     private static final Set<String> BACKUP_DENY_LIST_GLOBAL_SETTINGS =
109             newHashSet(
110                     Settings.Global.ACTIVITY_MANAGER_CONSTANTS,
111                     Settings.Global.ACTIVITY_STARTS_LOGGING_ENABLED,
112                     Settings.Global.ADB_ALLOWED_CONNECTION_TIME,
113                     Settings.Global.ADB_ENABLED,
114                     Settings.Global.ADB_WIFI_ENABLED,
115                     Settings.Global.ADB_DISCONNECT_SESSIONS_ON_REVOKE,
116                     Settings.Global.ADD_USERS_WHEN_LOCKED,
117                     Settings.Global.AIRPLANE_MODE_ON,
118                     Settings.Global.AIRPLANE_MODE_RADIOS,
119                     Settings.Global.ALLOW_WORK_PROFILE_TELEPHONY_FOR_NON_DPM_ROLE_HOLDERS,
120                     Settings.Global.SATELLITE_MODE_RADIOS,
121                     Settings.Global.SATELLITE_MODE_ENABLED,
122                     Settings.Global.AIRPLANE_MODE_TOGGLEABLE_RADIOS,
123                     Settings.Global.ALLOW_USER_SWITCHING_WHEN_SYSTEM_USER_LOCKED,
124                     Settings.Global.ALWAYS_FINISH_ACTIVITIES,
125                     Settings.Global.ALWAYS_ON_DISPLAY_CONSTANTS,
126                     Settings.Global.ANIMATOR_DURATION_SCALE,
127                     Settings.Global.ANOMALY_DETECTION_CONSTANTS,
128                     Settings.Global.ANOMALY_CONFIG,
129                     Settings.Global.ANOMALY_CONFIG_VERSION,
130                     Settings.Global.APN_DB_UPDATE_CONTENT_URL,
131                     Settings.Global.APN_DB_UPDATE_METADATA_URL,
132                     Settings.Global.APP_BINDING_CONSTANTS,
133                     Settings.Global.APP_OPS_CONSTANTS,
134                     Settings.Global.APP_STANDBY_ENABLED,
135                     Settings.Global.APP_TIME_LIMIT_USAGE_SOURCE,
136                     Settings.Global.ART_VERIFIER_VERIFY_DEBUGGABLE,
137                     Settings.Global.ASSISTED_GPS_ENABLED,
138                     Settings.Global.AUDIO_SAFE_VOLUME_STATE,
139                     Settings.Global.AUDIO_SAFE_CSD_CURRENT_VALUE,
140                     Settings.Global.AUDIO_SAFE_CSD_NEXT_WARNING,
141                     Settings.Global.AUDIO_SAFE_CSD_DOSE_RECORDS,
142                     Settings.Global.AUTOFILL_LOGGING_LEVEL,
143                     Settings.Global.AUTOFILL_MAX_PARTITIONS_SIZE,
144                     Settings.Global.AUTOFILL_MAX_VISIBLE_DATASETS,
145                     Settings.Global.AUTO_TIME_ZONE_EXPLICIT,
146                     Settings.Global.AVERAGE_TIME_TO_DISCHARGE,
147                     Settings.Global.BATTERY_CHARGING_STATE_UPDATE_DELAY,
148                     Settings.Global.BATTERY_ESTIMATES_LAST_UPDATE_TIME,
149                     Settings.Global.BROADCAST_BG_CONSTANTS,
150                     Settings.Global.BROADCAST_FG_CONSTANTS,
151                     Settings.Global.BROADCAST_OFFLOAD_CONSTANTS,
152                     Settings.Global.BATTERY_DISCHARGE_DURATION_THRESHOLD,
153                     Settings.Global.BATTERY_DISCHARGE_THRESHOLD,
154                     Settings.Global.BATTERY_SAVER_DEVICE_SPECIFIC_CONSTANTS,
155                     Settings.Global.BATTERY_STATS_CONSTANTS,
156                     Settings.Global.BINDER_CALLS_STATS,
157                     Settings.Global.BLE_SCAN_ALWAYS_AVAILABLE,
158                     Settings.Global.BLE_SCAN_LOW_POWER_WINDOW_MS,
159                     Settings.Global.BLE_SCAN_LOW_POWER_INTERVAL_MS,
160                     Settings.Global.BLE_SCAN_BALANCED_WINDOW_MS,
161                     Settings.Global.BLE_SCAN_BALANCED_INTERVAL_MS,
162                     Settings.Global.BLE_SCAN_LOW_LATENCY_WINDOW_MS,
163                     Settings.Global.BLE_SCAN_LOW_LATENCY_INTERVAL_MS,
164                     Settings.Global.BLE_SCAN_BACKGROUND_MODE,
165                     Settings.Global.BLOCKED_SLICES,
166                     Settings.Global.BLOCKING_HELPER_DISMISS_TO_VIEW_RATIO_LIMIT,
167                     Settings.Global.BLOCKING_HELPER_STREAK_LIMIT,
168                     Settings.Global.BLUETOOTH_BTSNOOP_DEFAULT_MODE,
169                     Settings.Global.BLUETOOTH_A2DP_SINK_PRIORITY_PREFIX,
170                     Settings.Global.BLUETOOTH_A2DP_SRC_PRIORITY_PREFIX,
171                     Settings.Global.BLUETOOTH_A2DP_SUPPORTS_OPTIONAL_CODECS_PREFIX,
172                     Settings.Global.BLUETOOTH_A2DP_OPTIONAL_CODECS_ENABLED_PREFIX,
173                     Settings.Global.BLUETOOTH_CLASS_OF_DEVICE,
174                     Settings.Global.BLUETOOTH_DISABLED_PROFILES,
175                     Settings.Global.BLUETOOTH_HEADSET_PRIORITY_PREFIX,
176                     Settings.Global.BLUETOOTH_INPUT_DEVICE_PRIORITY_PREFIX,
177                     Settings.Global.BLUETOOTH_INTEROPERABILITY_LIST,
178                     Settings.Global.BLUETOOTH_MAP_CLIENT_PRIORITY_PREFIX,
179                     Settings.Global.BLUETOOTH_MAP_PRIORITY_PREFIX,
180                     Settings.Global.BLUETOOTH_PAN_PRIORITY_PREFIX,
181                     Settings.Global.BLUETOOTH_PBAP_CLIENT_PRIORITY_PREFIX,
182                     Settings.Global.BLUETOOTH_SAP_PRIORITY_PREFIX,
183                     Settings.Global.BLUETOOTH_HEARING_AID_PRIORITY_PREFIX,
184                     Settings.Global.BOOT_COUNT,
185                     Settings.Global.CAPTIVE_PORTAL_FALLBACK_URL,
186                     Settings.Global.CAPTIVE_PORTAL_HTTPS_URL,
187                     Settings.Global.CAPTIVE_PORTAL_HTTP_URL,
188                     Settings.Global.CAPTIVE_PORTAL_MODE,
189                     Settings.Global.CAPTIVE_PORTAL_OTHER_FALLBACK_URLS,
190                     Settings.Global.CAPTIVE_PORTAL_FALLBACK_PROBE_SPECS,
191                     Settings.Global.CAPTIVE_PORTAL_SERVER,
192                     Settings.Global.CAPTIVE_PORTAL_USE_HTTPS,
193                     Settings.Global.CAPTIVE_PORTAL_USER_AGENT,
194                     Settings.Global.CAR_DOCK_SOUND,
195                     Settings.Global.CARRIER_APP_WHITELIST,
196                     Settings.Global.CARRIER_APP_NAMES,
197                     Settings.Global.CAR_UNDOCK_SOUND,
198                     Settings.Global.CDMA_CELL_BROADCAST_SMS,
199                     Settings.Global.CDMA_ROAMING_MODE,
200                     Settings.Global.CDMA_SUBSCRIPTION_MODE,
201                     Settings.Global.CELL_ON,
202                     Settings.Global.CERT_PIN_UPDATE_CONTENT_URL,
203                     Settings.Global.CERT_PIN_UPDATE_METADATA_URL,
204                     Settings.Global.COMPATIBILITY_MODE,
205                     Settings.Global.CONNECTIVITY_CHANGE_DELAY,
206                     Settings.Global.CONNECTIVITY_METRICS_BUFFER_SIZE,
207                     Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS,
208                     Settings.Global.CONTACT_METADATA_SYNC_ENABLED,
209                     Settings.Global.CONVERSATION_ACTIONS_UPDATE_CONTENT_URL,
210                     Settings.Global.CONVERSATION_ACTIONS_UPDATE_METADATA_URL,
211                     Settings.Global.CONTACTS_DATABASE_WAL_ENABLED,
212                     Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE,
213                     Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI,
214                     Settings.Global.DATABASE_CREATION_BUILDID,
215                     Settings.Global.DATABASE_DOWNGRADE_REASON,
216                     Settings.Global.DATA_ROAMING,
217                     Settings.Global.DATA_STALL_ALARM_AGGRESSIVE_DELAY_IN_MS,
218                     Settings.Global.DATA_STALL_ALARM_NON_AGGRESSIVE_DELAY_IN_MS,
219                     Settings.Global.DATA_STALL_RECOVERY_ON_BAD_NETWORK,
220                     Settings.Global.DEBUG_APP,
221                     Settings.Global.DEBUG_VIEW_ATTRIBUTES,
222                     Settings.Global.DEBUG_VIEW_ATTRIBUTES_APPLICATION_PACKAGE,
223                     Settings.Global.DEFAULT_DNS_SERVER,
224                     Settings.Global.DEFAULT_INSTALL_LOCATION,
225                     Settings.Global.DEFAULT_RESTRICT_BACKGROUND_DATA,
226                     Settings.Global.DESK_DOCK_SOUND,
227                     Settings.Global.DESK_UNDOCK_SOUND,
228                     Settings.Global.DEVELOPMENT_ENABLE_FREEFORM_WINDOWS_SUPPORT,
229                     Settings.Global.DEVELOPMENT_FORCE_DESKTOP_MODE_ON_EXTERNAL_DISPLAYS,
230                     Settings.Global.DEVELOPMENT_FORCE_RESIZABLE_ACTIVITIES,
231                     Settings.Global.DEVELOPMENT_FORCE_RTL,
232                     Settings.Global.DEVELOPMENT_ENABLE_NON_RESIZABLE_MULTI_WINDOW,
233                     Settings.Global.DEVELOPMENT_RENDER_SHADOWS_IN_COMPOSITOR,
234                     Settings.Global.DEVELOPMENT_USE_BLAST_ADAPTER_VR,
235                     Settings.Global.DEVELOPMENT_WM_DISPLAY_SETTINGS_PATH,
236                     Settings.Global.DEVICE_DEMO_MODE,
237                     Settings.Global.DISABLE_WINDOW_BLURS,
238                     Settings.Global.BATTERY_SAVER_CONSTANTS,
239                     Settings.Global.BATTERY_TIP_CONSTANTS,
240                     Settings.Global.DEFAULT_SM_DP_PLUS,
241                     Settings.Global.DEVICE_NAME,
242                     Settings.Global.DEVICE_POLICY_CONSTANTS,
243                     Settings.Global.DEVICE_PROVISIONED,
244                     Settings.Global.BYPASS_DEVICE_POLICY_MANAGEMENT_ROLE_QUALIFICATIONS,
245                     Settings.Global.DEVICE_PROVISIONING_MOBILE_DATA_ENABLED,
246                     Settings.Global.DISK_FREE_CHANGE_REPORTING_THRESHOLD,
247                     Settings.Global.DISPLAY_PANEL_LPM,
248                     Settings.Global.DISPLAY_SCALING_FORCE,
249                     Settings.Global.DISPLAY_SIZE_FORCED,
250                     Settings.Global.DNS_RESOLVER_MAX_SAMPLES,
251                     Settings.Global.DNS_RESOLVER_MIN_SAMPLES,
252                     Settings.Global.DNS_RESOLVER_SAMPLE_VALIDITY_SECONDS,
253                     Settings.Global.DNS_RESOLVER_SUCCESS_THRESHOLD_PERCENT,
254                     Settings.Global.DOCK_SOUNDS_ENABLED_WHEN_ACCESSIBILITY,
255                     Settings.Global.DOWNLOAD_MAX_BYTES_OVER_MOBILE,
256                     Settings.Global.DOWNLOAD_RECOMMENDED_MAX_BYTES_OVER_MOBILE,
257                     Settings.Global.DROPBOX_AGE_SECONDS,
258                     Settings.Global.DROPBOX_MAX_FILES,
259                     Settings.Global.DROPBOX_QUOTA_KB,
260                     Settings.Global.DROPBOX_QUOTA_PERCENT,
261                     Settings.Global.DROPBOX_RESERVE_PERCENT,
262                     Settings.Global.DROPBOX_TAG_PREFIX,
263                     Settings.Global.EMERGENCY_AFFORDANCE_NEEDED,
264                     Settings.Global.EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS,
265                     Settings.Global.EMERGENCY_GESTURE_TAP_DETECTION_MIN_TIME_MS,
266                     Settings.Global.EMERGENCY_GESTURE_STICKY_UI_MAX_DURATION_MILLIS,
267                     Settings.Global.EMULATE_DISPLAY_CUTOUT,
268                     Settings.Global.ENABLE_ACCESSIBILITY_GLOBAL_GESTURE_ENABLED,
269                     Settings.Global.ENABLE_CACHE_QUOTA_CALCULATION,
270                     Settings.Global.ENABLE_CELLULAR_ON_BOOT,
271                     Settings.Global.ENABLE_DELETION_HELPER_NO_THRESHOLD_TOGGLE,
272                     Settings.Global.ENABLE_DISKSTATS_LOGGING,
273                     Settings.Global.ENABLE_EPHEMERAL_FEATURE,
274                     Settings.Global.ENABLE_TARE,
275                     Settings.Global.DYNAMIC_POWER_SAVINGS_ENABLED,
276                     Settings.Global.DYNAMIC_POWER_SAVINGS_DISABLE_THRESHOLD,
277                     Settings.Global.SMART_REPLIES_IN_NOTIFICATIONS_FLAGS,
278                     Settings.Global.SMART_SUGGESTIONS_IN_NOTIFICATIONS_FLAGS,
279                     Settings.Global.STYLUS_EVER_USED,
280                     Settings.Global.ENABLE_ADB_INCREMENTAL_INSTALL_DEFAULT,
281                     Settings.Global.ENABLE_MULTI_SLOT_TIMEOUT_MILLIS,
282                     Settings.Global.ENHANCED_4G_MODE_ENABLED,
283                     Settings.Global.EPHEMERAL_COOKIE_MAX_SIZE_BYTES,
284                     Settings.Global.ERROR_LOGCAT_PREFIX,
285                     Settings.Global.EUICC_PROVISIONED,
286                     Settings.Global.EUICC_SUPPORTED_COUNTRIES,
287                     Settings.Global.EUICC_UNSUPPORTED_COUNTRIES,
288                     Settings.Global.EUICC_FACTORY_RESET_TIMEOUT_MILLIS,
289                     Settings.Global.EUICC_REMOVING_INVISIBLE_PROFILES_TIMEOUT_MILLIS,
290                     Settings.Global.EUICC_SWITCH_SLOT_TIMEOUT_MILLIS,
291                     Settings.Global.FANCY_IME_ANIMATIONS,
292                     Settings.Global.ONE_HANDED_KEYGUARD_SIDE,
293                     Settings.Global.FORCE_ALLOW_ON_EXTERNAL,
294                     Settings.Global.FORCED_APP_STANDBY_FOR_SMALL_BATTERY_ENABLED,
295                     Settings.Global.WIFI_ON_WHEN_PROXY_DISCONNECTED,
296                     Settings.Global.FSTRIM_MANDATORY_INTERVAL,
297                     Settings.Global.FOREGROUND_SERVICE_STARTS_LOGGING_ENABLED,
298                     Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST,
299                     Settings.Global.GLOBAL_HTTP_PROXY_HOST,
300                     Settings.Global.GLOBAL_HTTP_PROXY_PAC,
301                     Settings.Global.GLOBAL_HTTP_PROXY_PORT,
302                     Settings.Global.GNSS_HAL_LOCATION_REQUEST_DURATION_MILLIS,
303                     Settings.Global.GNSS_SATELLITE_BLOCKLIST,
304                     Settings.Global.GPRS_REGISTER_CHECK_PERIOD_MS,
305                     Settings.Global.HEADS_UP_NOTIFICATIONS_ENABLED,
306                     Settings.Global.HIDDEN_API_POLICY,
307                     Settings.Global.FORCE_NON_DEBUGGABLE_FINAL_BUILD_FOR_COMPAT,
308                     Settings.Global.HIDE_ERROR_DIALOGS,
309                     Settings.Global.HTTP_PROXY,
310                     HYBRID_SYSUI_BATTERY_WARNING_FLAGS,
311                     Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY,
312                     Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY,
313                     Settings.Global.INSTANT_APP_DEXOPT_ENABLED,
314                     Settings.Global.INTENT_FIREWALL_UPDATE_CONTENT_URL,
315                     Settings.Global.INTENT_FIREWALL_UPDATE_METADATA_URL,
316                     Settings.Global.KEEP_PROFILE_IN_BACKGROUND,
317                     Settings.Global.KERNEL_CPU_THREAD_READER,
318                     Settings.Global.LANG_ID_UPDATE_CONTENT_URL,
319                     Settings.Global.LANG_ID_UPDATE_METADATA_URL,
320                     Settings.Global.LOCATION_BACKGROUND_THROTTLE_INTERVAL_MS,
321                     Settings.Global.LOCATION_BACKGROUND_THROTTLE_PROXIMITY_ALERT_INTERVAL_MS,
322                     Settings.Global.LOCATION_BACKGROUND_THROTTLE_PACKAGE_WHITELIST,
323                     Settings.Global.LOCATION_ENABLE_STATIONARY_THROTTLE,
324                     Settings.Global.LOCATION_SETTINGS_LINK_TO_PERMISSIONS_ENABLED,
325                     Settings.Global.LOCK_SOUND,
326                     Settings.Global.LOOPER_STATS,
327                     Settings.Global.LOW_BATTERY_SOUND,
328                     Settings.Global.LOW_BATTERY_SOUND_TIMEOUT,
329                     Settings.Global.LOW_POWER_MODE,
330                     Settings.Global.EXTRA_LOW_POWER_MODE,
331                     Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL_MAX,
332                     Settings.Global.LOW_POWER_MODE_STICKY,
333                     Settings.Global.LOW_POWER_MODE_SUGGESTION_PARAMS,
334                     Settings.Global.LOW_POWER_STANDBY_ACTIVE_DURING_MAINTENANCE,
335                     Settings.Global.LOW_POWER_STANDBY_ENABLED,
336                     Settings.Global.LTE_SERVICE_FORCED,
337                     Settings.Global.LID_BEHAVIOR,
338                     Settings.Global.MAX_ERROR_BYTES_PREFIX,
339                     Settings.Global.MAX_NOTIFICATION_ENQUEUE_RATE,
340                     Settings.Global.MAX_SOUND_TRIGGER_DETECTION_SERVICE_OPS_PER_DAY,
341                     Settings.Global.MAXIMUM_OBSCURING_OPACITY_FOR_TOUCH,
342                     Settings.Global.MDC_INITIAL_MAX_RETRY,
343                     Settings.Global.MHL_INPUT_SWITCHING_ENABLED,
344                     Settings.Global.MHL_POWER_CHARGE_ENABLED,
345                     Settings.Global.MIN_DURATION_BETWEEN_RECOVERY_STEPS_IN_MS,
346                     Settings.Global.MOBILE_DATA, // Candidate for backup?
347                     Settings.Global.MOBILE_DATA_ALWAYS_ON,
348                     Settings.Global.DSRM_DURATION_MILLIS,
349                     Settings.Global.DSRM_ENABLED_ACTIONS,
350                     Settings.Global.MODE_RINGER,
351                     Settings.Global.MULTI_SIM_DATA_CALL_SUBSCRIPTION,
352                     Settings.Global.MULTI_SIM_SMS_PROMPT,
353                     Settings.Global.MULTI_SIM_SMS_SUBSCRIPTION,
354                     Settings.Global.MULTI_SIM_VOICE_CALL_SUBSCRIPTION,
355                     Settings.Global.MULTI_SIM_VOICE_PROMPT,
356                     Settings.Global.NATIVE_FLAGS_HEALTH_CHECK_ENABLED,
357                     Settings.Global.NETSTATS_DEV_BUCKET_DURATION,
358                     Settings.Global.NETSTATS_DEV_DELETE_AGE,
359                     Settings.Global.NETSTATS_DEV_PERSIST_BYTES,
360                     Settings.Global.NETSTATS_DEV_ROTATE_AGE,
361                     Settings.Global.NETSTATS_ENABLED,
362                     Settings.Global.NETSTATS_GLOBAL_ALERT_BYTES,
363                     Settings.Global.NETSTATS_POLL_INTERVAL,
364                     Settings.Global.NETSTATS_SAMPLE_ENABLED,
365                     Settings.Global.NETSTATS_AUGMENT_ENABLED,
366                     Settings.Global.NETSTATS_COMBINE_SUBTYPE_ENABLED,
367                     Settings.Global.NETSTATS_TIME_CACHE_MAX_AGE,
368                     Settings.Global.NETSTATS_UID_BUCKET_DURATION,
369                     Settings.Global.NETSTATS_UID_DELETE_AGE,
370                     Settings.Global.NETSTATS_UID_PERSIST_BYTES,
371                     Settings.Global.NETSTATS_UID_ROTATE_AGE,
372                     Settings.Global.NETSTATS_UID_TAG_BUCKET_DURATION,
373                     Settings.Global.NETSTATS_UID_TAG_DELETE_AGE,
374                     Settings.Global.NETSTATS_UID_TAG_PERSIST_BYTES,
375                     Settings.Global.NETSTATS_UID_TAG_ROTATE_AGE,
376                     Settings.Global.NETPOLICY_QUOTA_ENABLED,
377                     Settings.Global.NETPOLICY_QUOTA_UNLIMITED,
378                     Settings.Global.NETPOLICY_QUOTA_LIMITED,
379                     Settings.Global.NETPOLICY_QUOTA_FRAC_JOBS,
380                     Settings.Global.NETPOLICY_QUOTA_FRAC_MULTIPATH,
381                     Settings.Global.NETPOLICY_OVERRIDE_ENABLED,
382                     Settings.Global.NETWORK_DEFAULT_DAILY_MULTIPATH_QUOTA_BYTES,
383                     Settings.Global.NETWORK_METERED_MULTIPATH_PREFERENCE,
384                     Settings.Global.NETWORK_WATCHLIST_LAST_REPORT_TIME,
385                     Settings.Global.NETWORK_PREFERENCE,
386                     Settings.Global.NETWORK_RECOMMENDATIONS_PACKAGE,
387                     Settings.Global.NETWORK_SCORER_APP,
388                     Settings.Global.NETWORK_SCORING_PROVISIONED,
389                     Settings.Global.NETWORK_SCORING_UI_ENABLED,
390                     Settings.Global.NETWORK_SWITCH_NOTIFICATION_DAILY_LIMIT,
391                     Settings.Global.NETWORK_SWITCH_NOTIFICATION_RATE_LIMIT_MILLIS,
392                     Settings.Global.NETWORK_WATCHLIST_ENABLED,
393                     Settings.Global.NEW_CONTACT_AGGREGATOR,
394                     Settings.Global.NIGHT_DISPLAY_FORCED_AUTO_MODE_AVAILABLE,
395                     Settings.Global.NITZ_NETWORK_DISCONNECT_RETENTION,
396                     Settings.Global.NITZ_UPDATE_DIFF,
397                     Settings.Global.NITZ_UPDATE_SPACING,
398                     Settings.Global.NOTIFICATION_SNOOZE_OPTIONS,
399                     Settings.Global.NOTIFICATION_FEEDBACK_ENABLED,
400                     Settings.Global.NR_NSA_TRACKING_SCREEN_OFF_MODE,
401                     Settings.Global.NTP_SERVER,
402                     Settings.Global.NTP_TIMEOUT,
403                     Settings.Global.OTA_DISABLE_AUTOMATIC_UPDATE,
404                     Settings.Global.OVERLAY_DISPLAY_DEVICES,
405                     Settings.Global.PAC_CHANGE_DELAY,
406                     Settings.Global.PACKAGE_STREAMING_VERIFIER_TIMEOUT,
407                     Settings.Global.PACKAGE_VERIFIER_DEFAULT_RESPONSE,
408                     Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB,
409                     Settings.Global.PACKAGE_VERIFIER_SETTING_VISIBLE,
410                     Settings.Global.PACKAGE_VERIFIER_TIMEOUT,
411                     Settings.Global.PDP_WATCHDOG_ERROR_POLL_COUNT,
412                     Settings.Global.PDP_WATCHDOG_ERROR_POLL_INTERVAL_MS,
413                     Settings.Global.PDP_WATCHDOG_LONG_POLL_INTERVAL_MS,
414                     Settings.Global.PDP_WATCHDOG_MAX_PDP_RESET_FAIL_COUNT,
415                     Settings.Global.PDP_WATCHDOG_POLL_INTERVAL_MS,
416                     Settings.Global.PDP_WATCHDOG_TRIGGER_PACKET_COUNT,
417                     Settings.Global.PEOPLE_SPACE_CONVERSATION_TYPE,
418                     Settings.Global.POLICY_CONTROL,
419                     Settings.Global.POWER_BUTTON_SUPPRESSION_DELAY_AFTER_GESTURE_WAKE,
420                     Settings.Global.POWER_MANAGER_CONSTANTS,
421                     Settings.Global.PREFERRED_NETWORK_MODE,
422                     Settings.Global.PRIVATE_DNS_DEFAULT_MODE,
423                     Settings.Global.PROVISIONING_APN_ALARM_DELAY_IN_MS,
424                     Settings.Global.RADIO_BLUETOOTH,
425                     Settings.Global.RADIO_CELL,
426                     Settings.Global.RADIO_NFC,
427                     Settings.Global.RADIO_WIFI,
428                     Settings.Global.RADIO_WIMAX,
429                     Settings.Global.RADIO_UWB,
430                     Settings.Global.REMOVE_GUEST_ON_EXIT,
431                     Settings.Global.RECOMMENDED_NETWORK_EVALUATOR_CACHE_EXPIRY_MS,
432                     Settings.Global.READ_EXTERNAL_STORAGE_ENFORCED_DEFAULT,
433                     Settings.Global.RESTRICTED_NETWORKING_MODE,
434                     Settings.Global.REQUIRE_PASSWORD_TO_DECRYPT,
435                     Settings.Global.SAFE_BOOT_DISALLOWED,
436                     Settings.Global.SECURE_FRP_MODE,
437                     Settings.Global.SELINUX_STATUS,
438                     Settings.Global.SELINUX_UPDATE_CONTENT_URL,
439                     Settings.Global.SELINUX_UPDATE_METADATA_URL,
440                     Settings.Global.SEND_ACTION_APP_ERROR,
441                     Settings.Global.SET_GLOBAL_HTTP_PROXY,
442                     Settings.Global.SET_INSTALL_LOCATION,
443                     Settings.Global.SETUP_PREPAID_DATA_SERVICE_URL,
444                     Settings.Global.SETUP_PREPAID_DETECTION_REDIR_HOST,
445                     Settings.Global.SETUP_PREPAID_DETECTION_TARGET_URL,
446                     Settings.Global.SETTINGS_USE_EXTERNAL_PROVIDER_API,
447                     Settings.Global.SETTINGS_USE_PSD_API,
448                     Settings.Global.SHORTCUT_MANAGER_CONSTANTS,
449                     Settings.Global.SHOW_FIRST_CRASH_DIALOG,
450                     Settings.Global.SHOW_HIDDEN_LAUNCHER_ICON_APPS_ENABLED,
451                     Settings.Global.SHOW_MUTE_IN_CRASH_DIALOG,
452                     Settings.Global.SHOW_NEW_APP_INSTALLED_NOTIFICATION_ENABLED,
453                     Settings.Global.SHOW_NOTIFICATION_CHANNEL_WARNINGS,
454                     Settings.Global.SHOW_PEOPLE_SPACE,
455                     Settings.Global.SHOW_NEW_NOTIF_DISMISS,
456                     Settings.Global.SHOW_RESTART_IN_CRASH_DIALOG,
457                     Settings.Global.SHOW_TARE_DEVELOPER_OPTIONS,
458                     Settings.Global.SHOW_TEMPERATURE_WARNING,
459                     Settings.Global.SHOW_USB_TEMPERATURE_ALARM,
460                     Settings.Global.SIGNED_CONFIG_VERSION,
461                     Settings.Global.SMART_SELECTION_UPDATE_CONTENT_URL,
462                     Settings.Global.SMART_SELECTION_UPDATE_METADATA_URL,
463                     Settings.Global.SMS_OUTGOING_CHECK_INTERVAL_MS,
464                     Settings.Global.SMS_OUTGOING_CHECK_MAX_COUNT,
465                     Settings.Global.SMS_SHORT_CODE_CONFIRMATION,
466                     Settings.Global.SMS_SHORT_CODE_RULE,
467                     Settings.Global.SMS_SHORT_CODES_UPDATE_CONTENT_URL,
468                     Settings.Global.SMS_SHORT_CODES_UPDATE_METADATA_URL,
469                     Settings.Global.SOUND_TRIGGER_DETECTION_SERVICE_OP_TIMEOUT,
470                     Settings.Global.SPEED_LABEL_CACHE_EVICTION_AGE_MILLIS,
471                     Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS,
472                     Settings.Global.STORAGE_BENCHMARK_INTERVAL,
473                     Settings.Global.STORAGE_SETTINGS_CLOBBER_THRESHOLD,
474                     Settings.Global.SYNC_MANAGER_CONSTANTS,
475                     Settings.Global.SYNC_MAX_RETRY_DELAY_IN_SECONDS,
476                     Settings.Global.SYS_FREE_STORAGE_LOG_INTERVAL,
477                     Settings.Global.SYS_STORAGE_CACHE_PERCENTAGE,
478                     Settings.Global.SYS_STORAGE_FULL_THRESHOLD_BYTES,
479                     Settings.Global.SYS_STORAGE_THRESHOLD_MAX_BYTES,
480                     Settings.Global.SYS_STORAGE_THRESHOLD_PERCENTAGE,
481                     Settings.Global.SYS_UIDCPUPOWER,
482                     Settings.Global.SYS_TRACED,
483                     Settings.Global.FPS_DEVISOR,
484                     Settings.Global.TARE_ALARM_MANAGER_CONSTANTS,
485                     Settings.Global.TARE_JOB_SCHEDULER_CONSTANTS,
486                     Settings.Global.TCP_DEFAULT_INIT_RWND,
487                     Settings.Global.TETHER_DUN_APN,
488                     Settings.Global.TETHER_DUN_REQUIRED,
489                     Settings.Global.TETHER_OFFLOAD_DISABLED,
490                     Settings.Global.TETHER_SUPPORTED,
491                     Settings.Global.TETHER_ENABLE_LEGACY_DHCP_SERVER,
492                     Settings.Global.TEXT_CLASSIFIER_CONSTANTS,
493                     Settings.Global.TEXT_CLASSIFIER_ACTION_MODEL_PARAMS,
494                     Settings.Global.THEATER_MODE_ON,
495                     Settings.Global.TIME_ONLY_MODE_CONSTANTS,
496                     Settings.Global.TIME_REMAINING_ESTIMATE_MILLIS,
497                     Settings.Global.TIME_REMAINING_ESTIMATE_BASED_ON_USAGE,
498                     Settings.Global.TRANSITION_ANIMATION_SCALE,
499                     Settings.Global.TRUSTED_SOUND,
500                     Settings.Global.TZINFO_UPDATE_CONTENT_URL,
501                     Settings.Global.TZINFO_UPDATE_METADATA_URL,
502                     Settings.Global.INSTALLED_INSTANT_APP_MIN_CACHE_PERIOD,
503                     Settings.Global.INSTALLED_INSTANT_APP_MAX_CACHE_PERIOD,
504                     Settings.Global.UNINSTALLED_INSTANT_APP_MIN_CACHE_PERIOD,
505                     Settings.Global.UNINSTALLED_INSTANT_APP_MAX_CACHE_PERIOD,
506                     Settings.Global.UNUSED_STATIC_SHARED_LIB_MIN_CACHE_PERIOD,
507                     Settings.Global.UNGAZE_SLEEP_ENABLED,
508                     Settings.Global.UNLOCK_SOUND,
509                     Settings.Global.USE_GOOGLE_MAIL,
510                     Settings.Global.USER_ABSENT_RADIOS_OFF_FOR_SMALL_BATTERY_ENABLED,
511                     Settings.Global.USER_ABSENT_TOUCH_OFF_FOR_SMALL_BATTERY_ENABLED,
512                     Settings.Global.VT_IMS_ENABLED,
513                     Settings.Global.WAIT_FOR_DEBUGGER,
514                     Settings.Global.ENABLE_GPU_DEBUG_LAYERS,
515                     Settings.Global.GPU_DEBUG_APP,
516                     Settings.Global.GPU_DEBUG_LAYERS,
517                     Settings.Global.GPU_DEBUG_LAYERS_GLES,
518                     Settings.Global.ANGLE_DEBUG_PACKAGE,
519                     Settings.Global.ANGLE_GL_DRIVER_ALL_ANGLE,
520                     Settings.Global.ANGLE_GL_DRIVER_SELECTION_PKGS,
521                     Settings.Global.ANGLE_GL_DRIVER_SELECTION_VALUES,
522                     Settings.Global.ANGLE_EGL_FEATURES,
523                     Settings.Global.UPDATABLE_DRIVER_ALL_APPS,
524                     Settings.Global.UPDATABLE_DRIVER_PRODUCTION_OPT_IN_APPS,
525                     Settings.Global.UPDATABLE_DRIVER_PRERELEASE_OPT_IN_APPS,
526                     Settings.Global.UPDATABLE_DRIVER_PRODUCTION_OPT_OUT_APPS,
527                     Settings.Global.UPDATABLE_DRIVER_PRODUCTION_DENYLISTS,
528                     Settings.Global.UPDATABLE_DRIVER_PRODUCTION_DENYLIST,
529                     Settings.Global.UPDATABLE_DRIVER_PRODUCTION_ALLOWLIST,
530                     Settings.Global.UPDATABLE_DRIVER_SPHAL_LIBRARIES,
531                     Settings.Global.UWB_ENABLED,
532                     Settings.Global.SHOW_ANGLE_IN_USE_DIALOG_BOX,
533                     Settings.Global.GPU_DEBUG_LAYER_APP,
534                     Settings.Global.ENABLE_GNSS_RAW_MEAS_FULL_TRACKING,
535                     Settings.Global.INSTALL_CARRIER_APP_NOTIFICATION_PERSISTENT,
536                     Settings.Global.INSTALL_CARRIER_APP_NOTIFICATION_SLEEP_MILLIS,
537                     Settings.Global.USER_SWITCHER_ENABLED,
538                     Settings.Global.WARNING_TEMPERATURE,
539                     Settings.Global.WEBVIEW_DATA_REDUCTION_PROXY_KEY,
540                     Settings.Global.WEBVIEW_MULTIPROCESS,
541                     Settings.Global.WEBVIEW_PROVIDER,
542                     Settings.Global.WFC_IMS_ENABLED,
543                     Settings.Global.WFC_IMS_MODE,
544                     Settings.Global.WFC_IMS_ROAMING_ENABLED,
545                     Settings.Global.WFC_IMS_ROAMING_MODE,
546                     Settings.Global.WIFI_ALWAYS_REQUESTED,
547                     Settings.Global.WIFI_BADGING_THRESHOLDS,
548                     Settings.Global.WIFI_BOUNCE_DELAY_OVERRIDE_MS,
549                     Settings.Global.WIFI_COUNTRY_CODE,
550                     Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN,
551                     Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON,
552                     Settings.Global.WIFI_DISPLAY_ON,
553                     Settings.Global.WIFI_DISPLAY_WPS_CONFIG,
554                     Settings.Global.WIFI_ENHANCED_AUTO_JOIN,
555                     Settings.Global.WIFI_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS,
556                     Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS,
557                     Settings.Global.WIFI_FREQUENCY_BAND,
558                     Settings.Global.WIFI_IDLE_MS,
559                     Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT,
560                     Settings.Global.WIFI_MIGRATION_COMPLETED,
561                     Settings.Global.WIFI_MOBILE_DATA_TRANSITION_WAKELOCK_TIMEOUT_MS,
562                     Settings.Global.WIFI_NETWORK_SHOW_RSSI,
563                     Settings.Global.WIFI_NETWORKS_AVAILABLE_REPEAT_DELAY,
564                     Settings.Global.WIFI_NUM_OPEN_NETWORKS_KEPT,
565                     Settings.Global.WIFI_ON,
566                     Settings.Global.WIFI_P2P_DEVICE_NAME,
567                     Settings.Global.WIFI_P2P_PENDING_FACTORY_RESET,
568                     Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE,
569                     Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS,
570                     Settings.Global.WIFI_SCAN_THROTTLE_ENABLED,
571                     Settings.Global.WIFI_SCORE_PARAMS,
572                     Settings.Global.WIFI_SLEEP_POLICY,
573                     Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS,
574                     Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED,
575                     Settings.Global.WIFI_WATCHDOG_ON,
576                     Settings.Global.WIMAX_NETWORKS_AVAILABLE_NOTIFICATION_ON,
577                     Settings.Global.CHARGING_STARTED_SOUND,
578                     Settings.Global.WIRELESS_CHARGING_STARTED_SOUND,
579                     Settings.Global.WINDOW_ANIMATION_SCALE,
580                     Settings.Global.WTF_IS_FATAL,
581                     Settings.Global.ZEN_MODE,
582                     Settings.Global.ZEN_MODE_CONFIG_ETAG,
583                     Settings.Global.ZEN_MODE_RINGER_LEVEL,
584                     Settings.Global.ZRAM_ENABLED,
585                     Settings.Global.OVERRIDE_SETTINGS_PROVIDER_RESTORE_ANY_VERSION,
586                     Settings.Global.CHAINED_BATTERY_ATTRIBUTION_ENABLED,
587                     Settings.Global.HIDDEN_API_BLACKLIST_EXEMPTIONS,
588                     Settings.Global.BACKUP_AGENT_TIMEOUT_PARAMETERS,
589                     Settings.Global.APPOP_HISTORY_PARAMETERS,
590                     Settings.Global.APPOP_HISTORY_MODE,
591                     Settings.Global.APPOP_HISTORY_INTERVAL_MULTIPLIER,
592                     Settings.Global.APPOP_HISTORY_BASE_INTERVAL_MILLIS,
593                     Settings.Global.AUTO_REVOKE_PARAMETERS,
594                     Settings.Global.ENABLE_RADIO_BUG_DETECTION,
595                     Settings.Global.REPAIR_MODE_ACTIVE,
596                     Settings.Global.RADIO_BUG_WAKELOCK_TIMEOUT_COUNT_THRESHOLD,
597                     Settings.Global.RADIO_BUG_SYSTEM_ERROR_COUNT_THRESHOLD,
598                     Settings.Global.ENABLED_SUBSCRIPTION_FOR_SLOT,
599                     Settings.Global.MODEM_STACK_ENABLED_FOR_SLOT,
600                     Settings.Global.POWER_BUTTON_VERY_LONG_PRESS,
601                     Settings.Global.SHOW_MEDIA_ON_QUICK_SETTINGS, // Temporary for R beta
602                     Settings.Global.INTEGRITY_CHECK_INCLUDES_RULE_PROVIDER,
603                     Settings.Global.CACHED_APPS_FREEZER_ENABLED,
604                     Settings.Global.APP_INTEGRITY_VERIFICATION_TIMEOUT,
605                     Settings.Global.KEY_CHORD_POWER_VOLUME_UP,
606                     Settings.Global.CLOCKWORK_HOME_READY,
607                     Settings.Global.WATCHDOG_TIMEOUT_MILLIS,
608                     Settings.Global.MANAGED_PROVISIONING_DEFER_PROVISIONING_TO_ROLE_HOLDER,
609                     Settings.Global.REVIEW_PERMISSIONS_NOTIFICATION_STATE,
610                     Settings.Global.ENABLE_BACK_ANIMATION, // Temporary for T, dev option only
611                     Settings.Global.Wearable.COMBINED_LOCATION_ENABLED,
612                     Settings.Global.Wearable.HAS_PAY_TOKENS,
613                     Settings.Global.Wearable.GMS_CHECKIN_TIMEOUT_MIN,
614                     Settings.Global.Wearable.HOTWORD_DETECTION_ENABLED,
615                     Settings.Global.Wearable.DEFAULT_VIBRATION,
616                     Settings.Global.Wearable.OBTAIN_PAIRED_DEVICE_LOCATION,
617                     Settings.Global.Wearable.PHONE_PLAY_STORE_AVAILABILITY,
618                     Settings.Global.Wearable.BUG_REPORT,
619                     Settings.Global.Wearable.SMART_ILLUMINATE_ENABLED,
620                     Settings.Global.Wearable.AUTO_WIFI,
621                     Settings.Global.Wearable.WIFI_POWER_SAVE,
622                     Settings.Global.Wearable.ALT_BYPASS_WIFI_REQUIREMENT_TIME_MILLIS,
623                     Settings.Global.Wearable.SETUP_SKIPPED,
624                     Settings.Global.Wearable.LAST_CALL_FORWARD_ACTION,
625                     Settings.Global.Wearable.STEM_1_TYPE,
626                     Settings.Global.Wearable.STEM_1_DATA,
627                     Settings.Global.Wearable.STEM_1_DEFAULT_DATA,
628                     Settings.Global.Wearable.STEM_2_TYPE,
629                     Settings.Global.Wearable.STEM_2_DATA,
630                     Settings.Global.Wearable.STEM_2_DEFAULT_DATA,
631                     Settings.Global.Wearable.STEM_3_TYPE,
632                     Settings.Global.Wearable.STEM_3_DATA,
633                     Settings.Global.Wearable.STEM_3_DEFAULT_DATA,
634                     Settings.Global.Wearable.WEAR_OS_VERSION_STRING,
635                     Settings.Global.Wearable.SIDE_BUTTON,
636                     Settings.Global.Wearable.ANDROID_WEAR_VERSION,
637                     Settings.Global.Wearable.SYSTEM_CAPABILITIES,
638                     Settings.Global.Wearable.SYSTEM_EDITION,
639                     Settings.Global.Wearable.WEAR_PLATFORM_MR_NUMBER,
640                     Settings.Global.Wearable.MOBILE_SIGNAL_DETECTOR,
641                     Settings.Global.Wearable.AMBIENT_LOW_BIT_ENABLED_DEV,
642                     Settings.Global.Wearable.AMBIENT_TILT_TO_BRIGHT,
643                     Settings.Global.Wearable.DECOMPOSABLE_WATCHFACE,
644                     Settings.Global.Wearable.AMBIENT_FORCE_WHEN_DOCKED,
645                     Settings.Global.Wearable.AMBIENT_LOW_BIT_ENABLED,
646                     Settings.Global.Wearable.AMBIENT_PLUGGED_TIMEOUT_MIN,
647                     Settings.Global.Wearable.PAIRED_DEVICE_OS_TYPE,
648                     Settings.Global.Wearable.COMPANION_BLE_ROLE,
649                     Settings.Global.Wearable.COMPANION_NAME,
650                     Settings.Global.Wearable.COMPANION_APP_NAME,
651                     Settings.Global.Wearable.USER_HFP_CLIENT_SETTING,
652                     Settings.Global.Wearable.COMPANION_OS_VERSION,
653                     Settings.Global.Wearable.ENABLE_ALL_LANGUAGES,
654                     Settings.Global.Wearable.SETUP_LOCALE,
655                     Settings.Global.Wearable.OEM_SETUP_VERSION,
656                     Settings.Global.Wearable.OEM_SETUP_COMPLETED_STATUS,
657                     Settings.Global.Wearable.MASTER_GESTURES_ENABLED,
658                     Settings.Global.Wearable.UNGAZE_ENABLED,
659                     Settings.Global.Wearable.BURN_IN_PROTECTION_ENABLED,
660                     Settings.Global.Wearable.WRIST_ORIENTATION_MODE,
661                     Settings.Global.Wearable.CLOCKWORK_SYSUI_PACKAGE,
662                     Settings.Global.Wearable.CLOCKWORK_SYSUI_MAIN_ACTIVITY,
663                     Settings.Global.Wearable.CLOCKWORK_LONG_PRESS_TO_ASSISTANT_ENABLED,
664                     Settings.Global.Wearable.WET_MODE_ON,
665                     Settings.Global.Wearable.COOLDOWN_MODE_ON,
666                     Settings.Global.Wearable.CHARGING_SOUNDS_ENABLED,
667                     Settings.Global.Wearable.SCREEN_UNLOCK_SOUND_ENABLED,
668                     Settings.Global.Wearable.BEDTIME_MODE,
669                     Settings.Global.Wearable.BEDTIME_HARD_MODE,
670                     Settings.Global.Wearable.RSB_WAKE_ENABLED,
671                     Settings.Global.Wearable.LOCK_SCREEN_STATE,
672                     Settings.Global.Wearable.ACCESSIBILITY_VIBRATION_WATCH_ENABLED,
673                     Settings.Global.Wearable.ACCESSIBILITY_VIBRATION_WATCH_TYPE,
674                     Settings.Global.Wearable.ACCESSIBILITY_VIBRATION_WATCH_SPEED,
675                     Settings.Global.Wearable.SCREENSHOT_ENABLED,
676                     Settings.Global.Wearable.DISABLE_AOD_WHILE_PLUGGED,
677                     Settings.Global.Wearable.NETWORK_LOCATION_OPT_IN,
678                     Settings.Global.Wearable.CUSTOM_COLOR_FOREGROUND,
679                     Settings.Global.Wearable.CUSTOM_COLOR_BACKGROUND,
680                     Settings.Global.Wearable.PHONE_SWITCHING_STATUS,
681                     Settings.Global.Wearable.TETHER_CONFIG_STATE,
682                     Settings.Global.Wearable.PHONE_SWITCHING_SUPPORTED,
683                     Settings.Global.Wearable.WEAR_MEDIA_CONTROLS_PACKAGE,
684                     Settings.Global.Wearable.WEAR_MEDIA_SESSIONS_PACKAGE);
685 
686     private static final Set<String> BACKUP_DENY_LIST_SECURE_SETTINGS =
687              newHashSet(
688                  Settings.Secure.ACCESSIBILITY_SOFT_KEYBOARD_MODE,
689                  Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, // Deprecated since O.
690                  Settings.Secure.ALLOWED_GEOLOCATION_ORIGINS,
691                  Settings.Secure.ALWAYS_ON_VPN_APP,
692                  Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN,
693                  Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN_WHITELIST,
694                  Settings.Secure.ANDROID_ID,
695                  Settings.Secure.ANR_SHOW_BACKGROUND,
696                  Settings.Secure.ASSISTANT,
697                  Settings.Secure.ASSIST_DISCLOSURE_ENABLED,
698                  Settings.Secure.ASSIST_GESTURE_ENABLED,
699                  Settings.Secure.ASSIST_GESTURE_SENSITIVITY,
700                  Settings.Secure.ASSIST_GESTURE_WAKE_ENABLED,
701                  Settings.Secure.ASSIST_GESTURE_SILENCE_ALERTS_ENABLED,
702                  Settings.Secure.ASSIST_GESTURE_SETUP_COMPLETE,
703                  Settings.Secure.ASSIST_SCREENSHOT_ENABLED,
704                  Settings.Secure.ASSIST_STRUCTURE_ENABLED,
705                  Settings.Secure.ATTENTIVE_TIMEOUT,
706                  Settings.Secure.AUDIO_DEVICE_INVENTORY, // not controllable by user
707                  Settings.Secure.AUDIO_SAFE_CSD_AS_A_FEATURE_ENABLED, // not controllable by user
708                  Settings.Secure.AUTOFILL_FEATURE_FIELD_CLASSIFICATION,
709                  Settings.Secure.AUTOFILL_USER_DATA_MAX_CATEGORY_COUNT,
710                  Settings.Secure.AUTOFILL_USER_DATA_MAX_FIELD_CLASSIFICATION_IDS_SIZE,
711                  Settings.Secure.AUTOFILL_USER_DATA_MAX_USER_DATA_SIZE,
712                  Settings.Secure.AUTOFILL_USER_DATA_MAX_VALUE_LENGTH,
713                  Settings.Secure.AUTOFILL_USER_DATA_MIN_VALUE_LENGTH,
714                  Settings.Secure.AUTOFILL_SERVICE_SEARCH_URI,
715                  Settings.Secure.AUTOMATIC_STORAGE_MANAGER_BYTES_CLEARED,
716                  Settings.Secure.AUTOMATIC_STORAGE_MANAGER_ENABLED,
717                  Settings.Secure.AUTOMATIC_STORAGE_MANAGER_LAST_RUN,
718                  Settings.Secure.AUTOMATIC_STORAGE_MANAGER_TURNED_OFF_BY_POLICY,
719                  Settings.Secure.BACKUP_AUTO_RESTORE,
720                  Settings.Secure.BACKUP_ENABLED,
721                  Settings.Secure.BACKUP_PROVISIONED,
722                  Settings.Secure.BACKUP_SCHEDULING_ENABLED,
723                  Settings.Secure.BACKUP_TRANSPORT,
724                  Settings.Secure.CALL_SCREENING_DEFAULT_COMPONENT,
725                  Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED, // Candidate for backup?
726                  Settings.Secure.CARRIER_APPS_HANDLED,
727                  Settings.Secure.CMAS_ADDITIONAL_BROADCAST_PKG,
728                  Settings.Secure.COMPLETED_CATEGORY_PREFIX,
729                  Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS,
730                  Settings.Secure.CONTENT_CAPTURE_ENABLED,
731                  Settings.Secure.DEFAULT_INPUT_METHOD,
732                  Settings.Secure.DEFAULT_NOTE_TASK_PROFILE,
733                  Settings.Secure.DEVICE_PAIRED,
734                  Settings.Secure.DIALER_DEFAULT_APPLICATION,
735                  Settings.Secure.DISABLED_PRINT_SERVICES,
736                  Settings.Secure.DISABLED_SYSTEM_INPUT_METHODS,
737                  Settings.Secure.DOCKED_CLOCK_FACE,
738                  Settings.Secure.DOZE_PULSE_ON_LONG_PRESS,
739                  Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION,
740                  Settings.Secure.EMERGENCY_GESTURE_UI_SHOWING,
741                  Settings.Secure.EMERGENCY_GESTURE_UI_LAST_STARTED_MILLIS,
742                  Settings.Secure.ENABLED_INPUT_METHODS,  // Intentionally removed in P
743                  Settings.Secure.ENABLED_NOTIFICATION_ASSISTANT,
744                  Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
745                  Settings.Secure.ENABLED_NOTIFICATION_POLICY_ACCESS_PACKAGES,
746                  Settings.Secure.ENABLED_PRINT_SERVICES,
747                  Settings.Secure.GLOBAL_ACTIONS_PANEL_AVAILABLE,
748                  Settings.Secure.GLOBAL_ACTIONS_PANEL_DEBUG_ENABLED,
749                  Settings.Secure.IMMERSIVE_MODE_CONFIRMATIONS,
750                  Settings.Secure.INCALL_BACK_BUTTON_BEHAVIOR,
751                  Settings.Secure.INPUT_METHOD_SELECTOR_VISIBILITY,
752                  Settings.Secure.INPUT_METHODS_SUBTYPE_HISTORY,
753                  Settings.Secure.INSTALL_NON_MARKET_APPS,
754                  Settings.Secure.LAST_SETUP_SHOWN,
755                  Settings.Secure.LOCATION_CHANGER,
756                  Settings.Secure.LOCATION_MODE,
757                  Settings.Secure.LOCATION_PERMISSIONS_UPGRADE_TO_Q_MODE,
758                  Settings.Secure.LOCK_SCREEN_ALLOW_REMOTE_INPUT, // Candidate?
759                  Settings.Secure.LOCK_SCREEN_LOCK_AFTER_TIMEOUT,
760                  Settings.Secure.LOCK_TO_APP_EXIT_LOCKED,
761                  Settings.Secure.MANAGED_PROFILE_CONTACT_REMOTE_SEARCH,
762                  Settings.Secure.MULTI_PRESS_TIMEOUT,
763                  Settings.Secure.NFC_PAYMENT_FOREGROUND,
764                  Settings.Secure.NIGHT_DISPLAY_ACTIVATED,
765                  Settings.Secure.NIGHT_DISPLAY_LAST_ACTIVATED_TIME,
766                  Settings.Secure.NUM_ROTATION_SUGGESTIONS_ACCEPTED,
767                  Settings.Secure.ODI_CAPTIONS_ENABLED,
768                  Settings.Secure.PARENTAL_CONTROL_LAST_UPDATE,
769                  Settings.Secure.PAYMENT_SERVICE_SEARCH_URI,
770                  Settings.Secure.PRINT_SERVICE_SEARCH_URI,
771                  Settings.Secure.SCREENSAVER_DEFAULT_COMPONENT, // Candidate?
772                  Settings.Secure.SEARCH_GLOBAL_SEARCH_ACTIVITY,
773                  Settings.Secure.SEARCH_MAX_RESULTS_PER_SOURCE,
774                  Settings.Secure.SEARCH_MAX_RESULTS_TO_DISPLAY,
775                  Settings.Secure.SEARCH_MAX_SHORTCUTS_RETURNED,
776                  Settings.Secure.SEARCH_MAX_SOURCE_EVENT_AGE_MILLIS,
777                  Settings.Secure.SEARCH_MAX_STAT_AGE_MILLIS,
778                  Settings.Secure.SEARCH_MIN_CLICKS_FOR_SOURCE_RANKING,
779                  Settings.Secure.SEARCH_MIN_IMPRESSIONS_FOR_SOURCE_RANKING,
780                  Settings.Secure.SEARCH_NUM_PROMOTED_SOURCES,
781                  Settings.Secure.SEARCH_PER_SOURCE_CONCURRENT_QUERY_LIMIT,
782                  Settings.Secure.SEARCH_PREFILL_MILLIS,
783                  Settings.Secure.SEARCH_PROMOTED_SOURCE_DEADLINE_MILLIS,
784                  Settings.Secure.SEARCH_QUERY_THREAD_CORE_POOL_SIZE,
785                  Settings.Secure.SEARCH_QUERY_THREAD_MAX_POOL_SIZE,
786                  Settings.Secure.SEARCH_SHORTCUT_REFRESH_CORE_POOL_SIZE,
787                  Settings.Secure.SEARCH_SHORTCUT_REFRESH_MAX_POOL_SIZE,
788                  Settings.Secure.SEARCH_SOURCE_TIMEOUT_MILLIS,
789                  Settings.Secure.SEARCH_THREAD_KEEPALIVE_SECONDS,
790                  Settings.Secure.SECURE_FRP_MODE,
791                  Settings.Secure.SEARCH_WEB_RESULTS_OVERRIDE_LIMIT,
792                  Settings.Secure.SELECTED_INPUT_METHOD_SUBTYPE,
793                  Settings.Secure.SELECTED_SPELL_CHECKER,  // Intentionally removed in Q
794                  Settings.Secure.SELECTED_SPELL_CHECKER_SUBTYPE,  // Intentionally removed in Q
795                  Settings.Secure.SETTINGS_CLASSNAME,
796                  Settings.Secure.SHOW_NOTE_ABOUT_NOTIFICATION_HIDING, // candidate?
797                  Settings.Secure.SHOW_ROTATION_SUGGESTIONS,
798                  Settings.Secure.SKIP_FIRST_USE_HINTS, // candidate?
799                  Settings.Secure.SLEEP_TIMEOUT,
800                  Settings.Secure.SMS_DEFAULT_APPLICATION,
801                  Settings.Secure.SPELL_CHECKER_ENABLED,  // Intentionally removed in Q
802                  Settings.Secure.STYLUS_BUTTONS_ENABLED,
803                  Settings.Secure.STYLUS_HANDWRITING_ENABLED,
804                  Settings.Secure.TRUST_AGENTS_INITIALIZED,
805                  Settings.Secure.KNOWN_TRUST_AGENTS_INITIALIZED,
806                  Settings.Secure.TV_APP_USES_NON_SYSTEM_INPUTS,
807                  Settings.Secure.TV_INPUT_CUSTOM_LABELS,
808                  Settings.Secure.TV_INPUT_HIDDEN_INPUTS,
809                  Settings.Secure.TV_USER_SETUP_COMPLETE,
810                  Settings.Secure.UNKNOWN_SOURCES_DEFAULT_REVERSED,
811                  Settings.Secure.UNSAFE_VOLUME_MUSIC_ACTIVE_MS,
812                  Settings.Secure.USB_AUDIO_AUTOMATIC_ROUTING_DISABLED,
813                  Settings.Secure.USER_SETUP_COMPLETE,
814                  Settings.Secure.USER_SETUP_PERSONALIZATION_STATE,
815                  Settings.Secure.VOICE_INTERACTION_SERVICE,
816                  Settings.Secure.VOICE_RECOGNITION_SERVICE,
817                  Settings.Secure.INSTANT_APPS_ENABLED,
818                  Settings.Secure.BACKUP_MANAGER_CONSTANTS,
819                  Settings.Secure.BACKUP_LOCAL_TRANSPORT_PARAMETERS,
820                  Settings.Secure.KEYGUARD_SLICE_URI,
821                  Settings.Secure.PARENTAL_CONTROL_ENABLED,
822                  Settings.Secure.PARENTAL_CONTROL_REDIRECT_URL,
823                  Settings.Secure.BLUETOOTH_ON_WHILE_DRIVING,
824                  Settings.Secure.LOW_POWER_MANUAL_ACTIVATION_COUNT,
825                  Settings.Secure.SUPPRESS_AUTO_BATTERY_SAVER_SUGGESTION,
826                  Settings.Secure.PACKAGES_TO_CLEAR_DATA_BEFORE_FULL_RESTORE,
827                  Settings.Secure.FLASHLIGHT_AVAILABLE,
828                  Settings.Secure.FLASHLIGHT_ENABLED,
829                  Settings.Secure.CROSS_PROFILE_CALENDAR_ENABLED,
830                  Settings.Secure.LOCATION_ACCESS_CHECK_INTERVAL_MILLIS,
831                  Settings.Secure.LOCATION_ACCESS_CHECK_DELAY_MILLIS,
832                  Settings.Secure.BIOMETRIC_DEBUG_ENABLED,
833                  Settings.Secure.FACE_UNLOCK_ATTENTION_REQUIRED,
834                  Settings.Secure.FACE_UNLOCK_DIVERSITY_REQUIRED,
835                  Settings.Secure.MANAGED_PROVISIONING_DPC_DOWNLOADED,
836                  Settings.Secure.AWARE_ENABLED,
837                  Settings.Secure.SKIP_GESTURE,
838                  Settings.Secure.SILENCE_GESTURE,
839                  Settings.Secure.DOZE_WAKE_LOCK_SCREEN_GESTURE,
840                  Settings.Secure.DOZE_WAKE_DISPLAY_GESTURE,
841                  Settings.Secure.DOZE_QUICK_PICKUP_GESTURE,
842                  Settings.Secure.FACE_UNLOCK_RE_ENROLL,
843                  Settings.Secure.TAP_GESTURE,
844                  Settings.Secure.NEARBY_SHARING_COMPONENT, // not user configurable
845                  Settings.Secure.ACCESSIBILITY_SHORTCUT_TARGET_MAGNIFICATION_CONTROLLER,
846                  Settings.Secure.SUPPRESS_DOZE,
847                  Settings.Secure.REDUCE_BRIGHT_COLORS_ACTIVATED,
848                  Settings.Secure.ACCESSIBILITY_SHOW_WINDOW_MAGNIFICATION_PROMPT,
849                  Settings.Secure.ACCESSIBILITY_FLOATING_MENU_MIGRATION_TOOLTIP_PROMPT,
850                  Settings.Secure.UI_TRANSLATION_ENABLED,
851                  Settings.Secure.CREDENTIAL_SERVICE,
852                  Settings.Secure.CREDENTIAL_SERVICE_PRIMARY,
853                  Settings.Secure.NAVIGATION_MODE_RESTORE);
854 
855     @Test
systemSettingsBackedUpOrDenied()856     public void systemSettingsBackedUpOrDenied() {
857         checkSettingsBackedUpOrDenied(
858                 getCandidateSettings(Settings.System.class),
859                 newHashSet(SystemSettings.SETTINGS_TO_BACKUP),
860                 BACKUP_DENY_LIST_SYSTEM_SETTINGS);
861     }
862 
863     @Test
globalSettingsBackedUpOrDenied()864     public void globalSettingsBackedUpOrDenied() {
865         Set<String> candidateSettings = getCandidateSettings(Settings.Global.class);
866         candidateSettings.addAll(getCandidateSettings(Settings.Global.Wearable.class));
867         checkSettingsBackedUpOrDenied(
868                 candidateSettings,
869                 newHashSet(GlobalSettings.SETTINGS_TO_BACKUP),
870                 BACKUP_DENY_LIST_GLOBAL_SETTINGS);
871     }
872 
873     @Test
secureSettingsBackedUpOrDenied()874     public void secureSettingsBackedUpOrDenied() {
875         // List of settings that were not added to either SETTINGS_TO_BACKUP or
876         // BACKUP_DENY_LIST_SECURE_SETTINGS while this test was suppressed in
877         // the last two years. Settings in this list are temporarily allowed to
878         // not be explicitly listed as backed up or denied so we can re-enable
879         // this test.
880         //
881         // DO NOT ADD NEW SETTINGS TO THIS LIST!
882         Set<String> settingsNotBackedUpOrDeniedTemporaryAllowList =
883                 newHashSet(
884                         Settings.Secure.ACCESSIBILITY_ALLOW_DIAGONAL_SCROLLING,
885                         Settings.Secure.AMBIENT_CONTEXT_CONSENT_COMPONENT,
886                         Settings.Secure.AMBIENT_CONTEXT_EVENT_ARRAY_EXTRA_KEY,
887                         Settings.Secure.AMBIENT_CONTEXT_PACKAGE_NAME_EXTRA_KEY,
888                         Settings.Secure.AUTO_REVOKE_DISABLED,
889                         Settings.Secure.BIOMETRIC_APP_ENABLED,
890                         Settings.Secure.BIOMETRIC_KEYGUARD_ENABLED,
891                         Settings.Secure.BIOMETRIC_VIRTUAL_ENABLED,
892                         Settings.Secure.BLUETOOTH_ADDR_VALID,
893                         Settings.Secure.BLUETOOTH_ADDRESS,
894                         Settings.Secure.BLUETOOTH_NAME,
895                         Settings.Secure.BUBBLE_IMPORTANT_CONVERSATIONS,
896                         Settings.Secure.CLIPBOARD_SHOW_ACCESS_NOTIFICATIONS,
897                         Settings.Secure.COMMUNAL_MODE_ENABLED,
898                         Settings.Secure.COMMUNAL_MODE_TRUSTED_NETWORKS,
899                         Settings.Secure.DEFAULT_VOICE_INPUT_METHOD,
900                         Settings.Secure.DOCK_SETUP_STATE,
901                         Settings.Secure.EXTRA_AUTOMATIC_POWER_SAVE_MODE,
902                         Settings.Secure.GAME_DASHBOARD_ALWAYS_ON,
903                         Settings.Secure.HDMI_CEC_SET_MENU_LANGUAGE_DENYLIST,
904                         Settings.Secure.LAUNCHER_TASKBAR_EDUCATION_SHOWING,
905                         Settings.Secure.LOCATION_COARSE_ACCURACY_M,
906                         Settings.Secure.LOCATION_SHOW_SYSTEM_OPS,
907                         Settings.Secure.NAS_SETTINGS_UPDATED,
908                         Settings.Secure.NAV_BAR_FORCE_VISIBLE,
909                         Settings.Secure.NAV_BAR_KIDS_MODE,
910                         Settings.Secure.NEARBY_FAST_PAIR_SETTINGS_DEVICES_COMPONENT,
911                         Settings.Secure.NEARBY_SHARING_SLICE_URI,
912                         Settings.Secure.NOTIFIED_NON_ACCESSIBILITY_CATEGORY_SERVICES,
913                         Settings.Secure.ONE_HANDED_TUTORIAL_SHOW_COUNT,
914                         Settings.Secure.RELEASE_COMPRESS_BLOCKS_ON_INSTALL,
915                         Settings.Secure.SCREENSAVER_COMPLICATIONS_ENABLED,
916                         Settings.Secure.SHOW_QR_CODE_SCANNER_SETTING,
917                         Settings.Secure.SKIP_ACCESSIBILITY_SHORTCUT_DIALOG_TIMEOUT_RESTRICTION,
918                         Settings.Secure.SPATIAL_AUDIO_ENABLED,
919                         Settings.Secure.TIMEOUT_TO_DOCK_USER,
920                         Settings.Secure.UI_NIGHT_MODE_LAST_COMPUTED,
921                         Settings.Secure.UI_NIGHT_MODE_OVERRIDE_OFF,
922                         Settings.Secure.UI_NIGHT_MODE_OVERRIDE_ON);
923 
924         HashSet<String> keys = new HashSet<String>();
925         Collections.addAll(keys, SecureSettings.SETTINGS_TO_BACKUP);
926         Collections.addAll(keys, DEVICE_SPECIFIC_SETTINGS_TO_BACKUP);
927 
928         Set<String> allSettings = getCandidateSettings(Settings.Secure.class);
929         allSettings.removeAll(settingsNotBackedUpOrDeniedTemporaryAllowList);
930 
931         checkSettingsBackedUpOrDenied(allSettings, keys, BACKUP_DENY_LIST_SECURE_SETTINGS);
932     }
933 
checkSettingsBackedUpOrDenied( Set<String> settings, Set<String> settingsToBackup, Set<String> denylist)934     private static void checkSettingsBackedUpOrDenied(
935             Set<String> settings, Set<String> settingsToBackup, Set<String> denylist) {
936         Set<String> settingsNotBackedUp = difference(settings, settingsToBackup);
937         Set<String> settingsNotBackedUpOrDenied = difference(settingsNotBackedUp, denylist);
938         assertWithMessage("Settings not backed up or denied")
939                 .that(settingsNotBackedUpOrDenied).isEmpty();
940 
941         assertWithMessage("denied settings backed up")
942                 .that(intersect(settingsToBackup, denylist)).isEmpty();
943     }
944 
getCandidateSettings(Class<?> clazz)945     private static Set<String> getCandidateSettings(Class<?> clazz) {
946         HashSet<String> result = new HashSet<String>();
947         for (Field field : clazz.getDeclaredFields()) {
948             if (looksLikeValidSetting(field)) {
949                 try {
950                     result.add((String) field.get(null));
951                 } catch (IllegalAccessException e) {
952                     // Impossible for public fields
953                     throw new RuntimeException(e);
954                 }
955             }
956         }
957         return result;
958     }
959 
looksLikeValidSetting(Field field)960     private static boolean looksLikeValidSetting(Field field) {
961         int modifiers = field.getModifiers();
962         return isPublic(modifiers)
963                 && isStatic(modifiers)
964                 && isFinal(modifiers)
965                 && field.getType() == String.class
966                 && field.getAnnotation(Deprecated.class) == null;
967     }
968 
difference(Set<T> s1, Set<T> s2)969     private static <T> Set<T> difference(Set<T> s1, Set<T> s2) {
970         HashSet<T> result = new HashSet<T>(s1);
971         result.removeAll(s2);
972         return result;
973     }
974 
intersect(Set<T> s1, Set<T> s2)975     private static <T> Set<T> intersect(Set<T> s1, Set<T> s2) {
976         HashSet<T> result = new HashSet<T>(s1);
977         result.retainAll(s2);
978         return result;
979     }
980 
981 }
982