Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2020 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 com.android.server.wifi; |
| 18 | |
| 19 | import android.annotation.NonNull; |
| 20 | import android.annotation.Nullable; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 21 | import android.content.Context; |
Roshan Pius | 3225f11 | 2020-02-24 09:12:04 -0800 | [diff] [blame] | 22 | import android.net.wifi.WifiMigration; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 23 | import android.os.Handler; |
| 24 | import android.text.TextUtils; |
| 25 | import android.util.Log; |
| 26 | |
| 27 | import com.android.internal.annotations.GuardedBy; |
Roshan Pius | b0ed8e2 | 2020-03-19 09:08:16 -0700 | [diff] [blame^] | 28 | import com.android.server.wifi.util.SettingsMigrationDataHolder; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 29 | import com.android.server.wifi.util.WifiConfigStoreEncryptionUtil; |
| 30 | import com.android.server.wifi.util.XmlUtil; |
| 31 | |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 32 | import org.xmlpull.v1.XmlPullParser; |
| 33 | import org.xmlpull.v1.XmlPullParserException; |
| 34 | import org.xmlpull.v1.XmlSerializer; |
| 35 | |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 36 | import java.io.FileDescriptor; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 37 | import java.io.IOException; |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 38 | import java.io.PrintWriter; |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 39 | import java.util.ArrayList; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 40 | import java.util.HashMap; |
| 41 | import java.util.Map; |
| 42 | |
| 43 | /** |
| 44 | * Store data for storing wifi settings. These are key (string) / value pairs that are stored in |
| 45 | * WifiConfigStore.xml file in a separate section. |
| 46 | */ |
| 47 | public class WifiSettingsConfigStore { |
| 48 | private static final String TAG = "WifiSettingsConfigStore"; |
| 49 | |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 50 | // List of all allowed keys. |
| 51 | private static final ArrayList<Key> sKeys = new ArrayList<>(); |
| 52 | |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 53 | /******** Wifi shared pref keys ***************/ |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 54 | /** |
| 55 | * Indicate whether factory reset request is pending. |
| 56 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 57 | public static final Key<Boolean> WIFI_P2P_PENDING_FACTORY_RESET = |
| 58 | new Key<>("wifi_p2p_pending_factory_reset", false); |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 59 | |
| 60 | /** |
| 61 | * Allow scans to be enabled even wifi is turned off. |
| 62 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 63 | public static final Key<Boolean> WIFI_SCAN_ALWAYS_AVAILABLE = |
| 64 | new Key<>("wifi_scan_always_enabled", false); |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 65 | |
| 66 | /** |
| 67 | * Whether wifi scan throttle is enabled or not. |
| 68 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 69 | public static final Key<Boolean> WIFI_SCAN_THROTTLE_ENABLED = |
| 70 | new Key<>("wifi_scan_throttle_enabled", true); |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 71 | |
| 72 | /** |
| 73 | * Setting to enable verbose logging in Wi-Fi; disabled by default, and setting to 1 |
| 74 | * will enable it. In the future, additional values may be supported. |
| 75 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 76 | public static final Key<Boolean> WIFI_VERBOSE_LOGGING_ENABLED = |
| 77 | new Key<>("wifi_verbose_logging_enabled", false); |
| 78 | |
| 79 | /** |
| 80 | * The Wi-Fi peer-to-peer device name |
| 81 | */ |
| 82 | public static final Key<String> WIFI_P2P_DEVICE_NAME = |
| 83 | new Key<>("wifi_p2p_device_name", null); |
| 84 | |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 85 | /******** Wifi shared pref keys ***************/ |
| 86 | |
| 87 | private final Context mContext; |
| 88 | private final Handler mHandler; |
Roshan Pius | b0ed8e2 | 2020-03-19 09:08:16 -0700 | [diff] [blame^] | 89 | private final SettingsMigrationDataHolder mSettingsMigrationDataHolder; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 90 | private final WifiConfigManager mWifiConfigManager; |
| 91 | |
| 92 | private final Object mLock = new Object(); |
| 93 | @GuardedBy("mLock") |
| 94 | private final Map<String, Object> mSettings = new HashMap<>(); |
| 95 | @GuardedBy("mLock") |
| 96 | private final Map<String, Map<OnSettingsChangedListener, Handler>> mListeners = |
| 97 | new HashMap<>(); |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 98 | private WifiMigration.SettingsMigrationData mCachedMigrationData = null; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 99 | |
| 100 | private boolean mHasNewDataToSerialize = false; |
| 101 | |
| 102 | /** |
| 103 | * Interface for a settings change listener. |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 104 | * @param <T> Type of the value. |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 105 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 106 | public interface OnSettingsChangedListener<T> { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 107 | /** |
| 108 | * Invoked when a particular key settings changes. |
| 109 | * |
| 110 | * @param key Key that was changed. |
| 111 | * @param newValue New value that was assigned to the key. |
| 112 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 113 | void onSettingsChanged(@NonNull Key<T> key, @Nullable T newValue); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | public WifiSettingsConfigStore(@NonNull Context context, @NonNull Handler handler, |
Roshan Pius | b0ed8e2 | 2020-03-19 09:08:16 -0700 | [diff] [blame^] | 117 | @NonNull SettingsMigrationDataHolder settingsMigrationDataHolder, |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 118 | @NonNull WifiConfigManager wifiConfigManager, |
| 119 | @NonNull WifiConfigStore wifiConfigStore) { |
| 120 | mContext = context; |
| 121 | mHandler = handler; |
Roshan Pius | b0ed8e2 | 2020-03-19 09:08:16 -0700 | [diff] [blame^] | 122 | mSettingsMigrationDataHolder = settingsMigrationDataHolder; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 123 | mWifiConfigManager = wifiConfigManager; |
| 124 | |
| 125 | // Register our data store. |
| 126 | wifiConfigStore.registerStoreData(new StoreData()); |
| 127 | } |
| 128 | |
| 129 | private void invokeAllListeners() { |
| 130 | synchronized (mLock) { |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 131 | for (Key key : sKeys) { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 132 | invokeListeners(key); |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 137 | private <T> void invokeListeners(@NonNull Key<T> key) { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 138 | synchronized (mLock) { |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 139 | if (!mSettings.containsKey(key.key)) return; |
| 140 | Object newValue = mSettings.get(key.key); |
| 141 | Map<OnSettingsChangedListener, Handler> listeners = mListeners.get(key.key); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 142 | if (listeners == null || listeners.isEmpty()) return; |
| 143 | for (Map.Entry<OnSettingsChangedListener, Handler> listener |
| 144 | : listeners.entrySet()) { |
| 145 | // Trigger the callback in the appropriate handler. |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 146 | listener.getValue().post(() -> |
| 147 | listener.getKey().onSettingsChanged(key, newValue)); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Trigger config store writes and invoke listeners in the main wifi service looper's handler. |
| 154 | */ |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 155 | private void triggerSaveToStoreAndInvokeAllListeners() { |
| 156 | mHandler.post(() -> { |
| 157 | mHasNewDataToSerialize = true; |
| 158 | mWifiConfigManager.saveToStore(true); |
| 159 | |
| 160 | invokeAllListeners(); |
| 161 | }); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Trigger config store writes and invoke listeners in the main wifi service looper's handler. |
| 166 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 167 | private <T> void triggerSaveToStoreAndInvokeListeners(@NonNull Key<T> key) { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 168 | mHandler.post(() -> { |
| 169 | mHasNewDataToSerialize = true; |
| 170 | mWifiConfigManager.saveToStore(true); |
| 171 | |
| 172 | invokeListeners(key); |
| 173 | }); |
| 174 | } |
| 175 | |
| 176 | /** |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 177 | * Performs a one time migration from Settings.Global values to settings store. Only |
| 178 | * performed one time if the settings store is empty. |
| 179 | */ |
| 180 | private void migrateFromSettingsIfNeeded() { |
| 181 | if (!mSettings.isEmpty()) return; // already migrated. |
| 182 | |
Roshan Pius | b0ed8e2 | 2020-03-19 09:08:16 -0700 | [diff] [blame^] | 183 | mCachedMigrationData = mSettingsMigrationDataHolder.retrieveData(); |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 184 | if (mCachedMigrationData == null) { |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 185 | Log.e(TAG, "No settings data to migrate"); |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 186 | return; |
| 187 | } |
| 188 | Log.i(TAG, "Migrating data out of settings to shared preferences"); |
| 189 | |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 190 | mSettings.put(WIFI_P2P_DEVICE_NAME.key, |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 191 | mCachedMigrationData.getP2pDeviceName()); |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 192 | mSettings.put(WIFI_P2P_PENDING_FACTORY_RESET.key, |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 193 | mCachedMigrationData.isP2pFactoryResetPending()); |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 194 | mSettings.put(WIFI_SCAN_ALWAYS_AVAILABLE.key, |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 195 | mCachedMigrationData.isScanAlwaysAvailable()); |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 196 | mSettings.put(WIFI_SCAN_THROTTLE_ENABLED.key, |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 197 | mCachedMigrationData.isScanThrottleEnabled()); |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 198 | mSettings.put(WIFI_VERBOSE_LOGGING_ENABLED.key, |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 199 | mCachedMigrationData.isVerboseLoggingEnabled()); |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 200 | triggerSaveToStoreAndInvokeAllListeners(); |
| 201 | } |
| 202 | |
| 203 | /** |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 204 | * Store a value to the stored settings. |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 205 | * |
| 206 | * @param key One of the settings keys. |
| 207 | * @param value Value to be stored. |
| 208 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 209 | public <T> void put(@NonNull Key<T> key, @Nullable T value) { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 210 | synchronized (mLock) { |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 211 | mSettings.put(key.key, value); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 212 | } |
| 213 | triggerSaveToStoreAndInvokeListeners(key); |
| 214 | } |
| 215 | |
| 216 | /** |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 217 | * Retrieve a value from the stored settings. |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 218 | * |
| 219 | * @param key One of the settings keys. |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 220 | * @return value stored in settings, defValue if the key does not exist. |
| 221 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 222 | public @Nullable <T> T get(@NonNull Key<T> key) { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 223 | synchronized (mLock) { |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 224 | return (T) mSettings.getOrDefault(key.key, key.defaultValue); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 225 | } |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * Register for settings change listener. |
| 230 | * |
| 231 | * @param key One of the settings keys. |
| 232 | * @param listener Listener to be registered. |
| 233 | * @param handler Handler to post the listener |
| 234 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 235 | public <T> void registerChangeListener(@NonNull Key<T> key, |
| 236 | @NonNull OnSettingsChangedListener<T> listener, @NonNull Handler handler) { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 237 | synchronized (mLock) { |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 238 | mListeners.computeIfAbsent( |
| 239 | key.key, ignore -> new HashMap<>()).put(listener, handler); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 240 | } |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Unregister for settings change listener. |
| 245 | * |
| 246 | * @param key One of the settings keys. |
| 247 | * @param listener Listener to be unregistered. |
| 248 | */ |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 249 | public <T> void unregisterChangeListener(@NonNull Key<T> key, |
| 250 | @NonNull OnSettingsChangedListener<T> listener) { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 251 | synchronized (mLock) { |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 252 | Map<OnSettingsChangedListener, Handler> listeners = mListeners.get(key.key); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 253 | if (listeners == null || listeners.isEmpty()) { |
| 254 | Log.e(TAG, "No listeners for " + key); |
| 255 | return; |
| 256 | } |
| 257 | if (listeners.remove(listener) == null) { |
| 258 | Log.e(TAG, "Unknown listener for " + key); |
| 259 | } |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | /** |
Roshan Pius | da0d199 | 2020-03-04 08:34:42 -0800 | [diff] [blame] | 264 | * Dump output for debugging. |
| 265 | */ |
| 266 | public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| 267 | pw.println(); |
| 268 | pw.println("Dump of " + TAG); |
| 269 | pw.println("Settings:"); |
| 270 | for (Map.Entry<String, Object> entry : mSettings.entrySet()) { |
| 271 | pw.print(entry.getKey()); |
| 272 | pw.print("="); |
| 273 | pw.println(entry.getValue()); |
| 274 | } |
| 275 | if (mCachedMigrationData == null) return; |
| 276 | pw.println("Migration data:"); |
| 277 | pw.print(WIFI_P2P_DEVICE_NAME.key); |
| 278 | pw.print("="); |
| 279 | pw.println(mCachedMigrationData.getP2pDeviceName()); |
| 280 | pw.print(WIFI_P2P_PENDING_FACTORY_RESET.key); |
| 281 | pw.print("="); |
| 282 | pw.println(mCachedMigrationData.isP2pFactoryResetPending()); |
| 283 | pw.print(WIFI_SCAN_ALWAYS_AVAILABLE.key); |
| 284 | pw.print("="); |
| 285 | pw.println(mCachedMigrationData.isScanAlwaysAvailable()); |
| 286 | pw.print(WIFI_SCAN_THROTTLE_ENABLED.key); |
| 287 | pw.print("="); |
| 288 | pw.println(mCachedMigrationData.isScanThrottleEnabled()); |
| 289 | pw.print(WIFI_VERBOSE_LOGGING_ENABLED.key); |
| 290 | pw.print("="); |
| 291 | pw.println(mCachedMigrationData.isVerboseLoggingEnabled()); |
| 292 | pw.println(); |
| 293 | } |
| 294 | |
| 295 | /** |
Roshan Pius | 67ee429 | 2020-02-25 09:51:02 -0800 | [diff] [blame] | 296 | * Base class to store string key and its default value. |
| 297 | * @param <T> Type of the value. |
| 298 | */ |
| 299 | public static class Key<T> { |
| 300 | public final String key; |
| 301 | public final T defaultValue; |
| 302 | |
| 303 | private Key(@NonNull String key, T defaultValue) { |
| 304 | this.key = key; |
| 305 | this.defaultValue = defaultValue; |
| 306 | sKeys.add(this); |
| 307 | } |
| 308 | |
| 309 | @Override |
| 310 | public String toString() { |
| 311 | return "[Key " + key + ", DefaultValue: " + defaultValue + "]"; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | /** |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 316 | * Store data for persisting the settings data to config store. |
| 317 | */ |
| 318 | private class StoreData implements WifiConfigStore.StoreData { |
| 319 | private static final String XML_TAG_SECTION_HEADER = "Settings"; |
| 320 | private static final String XML_TAG_VALUES = "Values"; |
| 321 | |
| 322 | @Override |
| 323 | public void serializeData(XmlSerializer out, |
| 324 | @Nullable WifiConfigStoreEncryptionUtil encryptionUtil) |
| 325 | throws XmlPullParserException, IOException { |
| 326 | synchronized (mLock) { |
| 327 | XmlUtil.writeNextValue(out, XML_TAG_VALUES, mSettings); |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | @Override |
| 332 | public void deserializeData(XmlPullParser in, int outerTagDepth, |
| 333 | @WifiConfigStore.Version int version, |
Roshan Pius | fdf57e6 | 2020-03-16 13:33:16 -0700 | [diff] [blame] | 334 | @Nullable WifiConfigStoreEncryptionUtil encryptionUtil) |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 335 | throws XmlPullParserException, IOException { |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 336 | if (in == null) { |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 337 | // Empty read triggers the migration since it indicates that there is no settings |
| 338 | // data stored in the settings store. |
| 339 | migrateFromSettingsIfNeeded(); |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 340 | return; |
| 341 | } |
| 342 | Map<String, Object> values = null; |
| 343 | while (!XmlUtil.isNextSectionEnd(in, outerTagDepth)) { |
| 344 | String[] valueName = new String[1]; |
| 345 | Object value = XmlUtil.readCurrentValue(in, valueName); |
| 346 | if (TextUtils.isEmpty(valueName[0])) { |
| 347 | throw new XmlPullParserException("Missing value name"); |
| 348 | } |
| 349 | switch (valueName[0]) { |
| 350 | case XML_TAG_VALUES: |
| 351 | values = (Map) value; |
| 352 | break; |
| 353 | default: |
| 354 | Log.w(TAG, "Ignoring unknown tag under " + XML_TAG_SECTION_HEADER + ": " |
| 355 | + valueName[0]); |
| 356 | break; |
| 357 | } |
| 358 | } |
| 359 | if (values != null) { |
| 360 | synchronized (mLock) { |
| 361 | mSettings.putAll(values); |
| 362 | // Invoke all the registered listeners. |
| 363 | invokeAllListeners(); |
| 364 | } |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | @Override |
| 369 | public void resetData() { |
| 370 | synchronized (mLock) { |
| 371 | mSettings.clear(); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | @Override |
| 376 | public boolean hasNewDataToSerialize() { |
| 377 | return mHasNewDataToSerialize; |
| 378 | } |
| 379 | |
| 380 | @Override |
| 381 | public String getName() { |
| 382 | return XML_TAG_SECTION_HEADER; |
| 383 | } |
| 384 | |
| 385 | @Override |
| 386 | public @WifiConfigStore.StoreFileId int getStoreFileId() { |
| 387 | // Shared general store. |
Roshan Pius | 0412d2d | 2020-02-10 13:26:42 -0800 | [diff] [blame] | 388 | return WifiConfigStore.STORE_FILE_SHARED_GENERAL; |
Roshan Pius | b790f67 | 2020-02-14 07:06:13 -0800 | [diff] [blame] | 389 | } |
| 390 | } |
| 391 | } |