Zhen Zhang | b60e8ca | 2020-01-07 18:14:30 -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.settings; |
| 18 | |
| 19 | import static android.net.ConnectivityManager.ACTION_TETHER_STATE_CHANGED; |
| 20 | import static android.net.ConnectivityManager.TETHERING_WIFI; |
| 21 | import static android.net.wifi.WifiManager.WIFI_AP_STATE_CHANGED_ACTION; |
| 22 | |
| 23 | import static com.android.settings.network.WifiTetherDisablePreferenceController |
| 24 | .KEY_ENABLE_WIFI_TETHERING; |
| 25 | |
| 26 | import android.app.settings.SettingsEnums; |
| 27 | import android.content.BroadcastReceiver; |
| 28 | import android.content.Context; |
| 29 | import android.content.Intent; |
| 30 | import android.content.IntentFilter; |
| 31 | import android.content.SharedPreferences; |
| 32 | import android.net.ConnectivityManager; |
| 33 | import android.net.wifi.SoftApConfiguration; |
| 34 | import android.net.wifi.WifiManager; |
| 35 | import android.os.Bundle; |
| 36 | import android.os.Handler; |
| 37 | import android.os.Looper; |
| 38 | import android.os.UserManager; |
| 39 | import android.text.TextUtils; |
| 40 | import android.util.Log; |
| 41 | |
| 42 | import androidx.annotation.VisibleForTesting; |
| 43 | import androidx.preference.Preference; |
| 44 | import androidx.preference.PreferenceGroup; |
| 45 | |
| 46 | import com.android.settings.dashboard.RestrictedDashboardFragment; |
| 47 | import com.android.settings.datausage.DataSaverBackend; |
| 48 | import com.android.settings.network.TetherEnabler; |
| 49 | import com.android.settings.search.BaseSearchIndexProvider; |
| 50 | import com.android.settings.wifi.tether.WifiTetherApBandPreferenceController; |
| 51 | import com.android.settings.wifi.tether.WifiTetherAutoOffPreferenceController; |
| 52 | import com.android.settings.wifi.tether.WifiTetherBasePreferenceController; |
| 53 | import com.android.settings.wifi.tether.WifiTetherPasswordPreferenceController; |
| 54 | import com.android.settings.wifi.tether.WifiTetherSSIDPreferenceController; |
| 55 | import com.android.settings.wifi.tether.WifiTetherSecurityPreferenceController; |
| 56 | import com.android.settingslib.TetherUtil; |
| 57 | import com.android.settingslib.core.AbstractPreferenceController; |
| 58 | import com.android.settingslib.search.SearchIndexable; |
| 59 | |
| 60 | import java.util.ArrayList; |
| 61 | import java.util.List; |
| 62 | |
| 63 | /** |
| 64 | * Displays preferences for Tethering. |
| 65 | * TODO(b/147322704): Use TetherEnabler in this fragment to manage tethering switch on/off. |
| 66 | * TODO(b/147323306): Add tether option preferences into this fragment after controllers created. |
| 67 | */ |
| 68 | @SearchIndexable |
| 69 | public final class AllInOneTetherSettings extends RestrictedDashboardFragment |
| 70 | implements DataSaverBackend.Listener, |
| 71 | WifiTetherBasePreferenceController.OnTetherConfigUpdateListener, |
| 72 | SharedPreferences.OnSharedPreferenceChangeListener { |
| 73 | |
| 74 | @VisibleForTesting |
| 75 | static final String KEY_TETHER_PREFS_SCREEN = "tether_prefs_screen"; |
| 76 | @VisibleForTesting |
| 77 | static final String KEY_WIFI_TETHER_NETWORK_NAME = "wifi_tether_network_name"; |
| 78 | @VisibleForTesting |
| 79 | static final String KEY_WIFI_TETHER_NETWORK_PASSWORD = "wifi_tether_network_password"; |
| 80 | @VisibleForTesting |
| 81 | static final String KEY_WIFI_TETHER_AUTO_OFF = "wifi_tether_auto_turn_off"; |
| 82 | @VisibleForTesting |
| 83 | static final String KEY_WIFI_TETHER_NETWORK_AP_BAND = "wifi_tether_network_ap_band"; |
| 84 | |
| 85 | private static final String KEY_WIFI_TETHER_GROUP = "wifi_tether_settings_group"; |
| 86 | private static final String KEY_DATA_SAVER_FOOTER = "disabled_on_data_saver"; |
| 87 | private static final int EXPANDED_CHILD_COUNT_WITH_SECURITY_NON = 2; |
| 88 | private static final int EXPANDED_CHILD_COUNT_DEFAULT = 3; |
| 89 | private static final String TAG = "AllInOneTetherSettings"; |
| 90 | |
| 91 | private boolean mUnavailable; |
| 92 | |
| 93 | private DataSaverBackend mDataSaverBackend; |
| 94 | private boolean mDataSaverEnabled; |
| 95 | private Preference mDataSaverFooter; |
| 96 | |
| 97 | private WifiManager mWifiManager; |
| 98 | private boolean mRestartWifiApAfterConfigChange; |
| 99 | |
| 100 | private WifiTetherSSIDPreferenceController mSSIDPreferenceController; |
| 101 | private WifiTetherPasswordPreferenceController mPasswordPreferenceController; |
| 102 | private WifiTetherApBandPreferenceController mApBandPreferenceController; |
| 103 | private WifiTetherSecurityPreferenceController mSecurityPreferenceController; |
| 104 | private PreferenceGroup mWifiTetherGroup; |
| 105 | private SharedPreferences mSharedPreferences; |
| 106 | private ConnectivityManager mConnectivityManager; |
| 107 | private boolean mWifiTetherChosen; |
| 108 | |
| 109 | private final BroadcastReceiver mTetherChangeReceiver = new BroadcastReceiver() { |
| 110 | @Override |
| 111 | public void onReceive(Context content, Intent intent) { |
| 112 | String action = intent.getAction(); |
| 113 | if (Log.isLoggable(TAG, Log.DEBUG)) { |
| 114 | Log.d(TAG, "updating display config due to receiving broadcast action " + action); |
| 115 | } |
| 116 | updateDisplayWithNewConfig(); |
| 117 | if (TextUtils.equals(action, ACTION_TETHER_STATE_CHANGED)) { |
| 118 | if (mWifiManager.getWifiApState() == WifiManager.WIFI_AP_STATE_DISABLED |
| 119 | && mRestartWifiApAfterConfigChange) { |
| 120 | mRestartWifiApAfterConfigChange = false; |
| 121 | startTether(); |
| 122 | } |
| 123 | } else if (TextUtils.equals(action, WIFI_AP_STATE_CHANGED_ACTION)) { |
| 124 | int state = intent.getIntExtra(WifiManager.EXTRA_WIFI_AP_STATE, 0); |
| 125 | if (state == WifiManager.WIFI_AP_STATE_DISABLED |
| 126 | && mRestartWifiApAfterConfigChange) { |
| 127 | mRestartWifiApAfterConfigChange = false; |
| 128 | startTether(); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | }; |
| 133 | |
| 134 | @Override |
| 135 | public int getMetricsCategory() { |
| 136 | return SettingsEnums.TETHER; |
| 137 | } |
| 138 | |
| 139 | public AllInOneTetherSettings() { |
| 140 | super(UserManager.DISALLOW_CONFIG_TETHERING); |
| 141 | } |
| 142 | |
| 143 | @Override |
| 144 | public void onAttach(Context context) { |
| 145 | super.onAttach(context); |
| 146 | mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); |
| 147 | mConnectivityManager = |
| 148 | (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); |
| 149 | mSharedPreferences = |
| 150 | context.getSharedPreferences(TetherEnabler.SHARED_PREF, Context.MODE_PRIVATE); |
| 151 | |
| 152 | mSSIDPreferenceController = use(WifiTetherSSIDPreferenceController.class); |
| 153 | mSecurityPreferenceController = use(WifiTetherSecurityPreferenceController.class); |
| 154 | mPasswordPreferenceController = use(WifiTetherPasswordPreferenceController.class); |
| 155 | mApBandPreferenceController = use(WifiTetherApBandPreferenceController.class); |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | public void onCreate(Bundle icicle) { |
| 160 | super.onCreate(icicle); |
| 161 | |
| 162 | mDataSaverBackend = new DataSaverBackend(getContext()); |
| 163 | mDataSaverEnabled = mDataSaverBackend.isDataSaverEnabled(); |
| 164 | mDataSaverFooter = findPreference(KEY_DATA_SAVER_FOOTER); |
| 165 | mWifiTetherGroup = findPreference(KEY_WIFI_TETHER_GROUP); |
| 166 | |
| 167 | setIfOnlyAvailableForAdmins(true); |
| 168 | if (isUiRestricted()) { |
| 169 | mUnavailable = true; |
| 170 | return; |
| 171 | } |
| 172 | |
| 173 | mDataSaverBackend.addListener(this); |
| 174 | |
| 175 | // Set initial state based on Data Saver mode. |
| 176 | onDataSaverChanged(mDataSaverBackend.isDataSaverEnabled()); |
| 177 | |
| 178 | // Set initial state based on SharedPreferences value. |
| 179 | onSharedPreferenceChanged(mSharedPreferences, KEY_ENABLE_WIFI_TETHERING); |
| 180 | |
| 181 | // TODO(b/147325229): Hide advanced settings like security and ap band. |
| 182 | } |
| 183 | |
| 184 | @Override |
| 185 | public void onStart() { |
| 186 | super.onStart(); |
| 187 | |
| 188 | if (mUnavailable) { |
| 189 | if (!isUiRestrictedByOnlyAdmin()) { |
| 190 | getEmptyTextView().setText(R.string.tethering_settings_not_available); |
| 191 | } |
| 192 | getPreferenceScreen().removeAll(); |
| 193 | return; |
| 194 | } |
| 195 | final Context context = getContext(); |
| 196 | if (context != null) { |
| 197 | IntentFilter filter = new IntentFilter(ACTION_TETHER_STATE_CHANGED); |
| 198 | filter.addAction(WIFI_AP_STATE_CHANGED_ACTION); |
| 199 | context.registerReceiver(mTetherChangeReceiver, filter); |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | @Override |
| 204 | public void onResume() { |
| 205 | super.onResume(); |
| 206 | mSharedPreferences.registerOnSharedPreferenceChangeListener(this); |
| 207 | } |
| 208 | |
| 209 | @Override |
| 210 | public void onPause() { |
| 211 | super.onPause(); |
| 212 | mSharedPreferences.unregisterOnSharedPreferenceChangeListener(this); |
| 213 | } |
| 214 | |
| 215 | @Override |
| 216 | public void onStop() { |
| 217 | super.onStop(); |
| 218 | final Context context = getContext(); |
| 219 | if (context != null) { |
| 220 | context.unregisterReceiver(mTetherChangeReceiver); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | @Override |
| 225 | public void onDestroy() { |
| 226 | mDataSaverBackend.remListener(this); |
| 227 | super.onDestroy(); |
| 228 | } |
| 229 | |
| 230 | @Override |
| 231 | public void onDataSaverChanged(boolean isDataSaving) { |
| 232 | mDataSaverEnabled = isDataSaving; |
| 233 | mDataSaverFooter.setVisible(mDataSaverEnabled); |
| 234 | } |
| 235 | |
| 236 | @Override |
| 237 | public void onWhitelistStatusChanged(int uid, boolean isWhitelisted) { |
| 238 | // Do nothing |
| 239 | } |
| 240 | |
| 241 | @Override |
| 242 | public void onBlacklistStatusChanged(int uid, boolean isBlacklisted) { |
| 243 | // Do nothing |
| 244 | } |
| 245 | |
| 246 | @Override |
| 247 | protected List<AbstractPreferenceController> createPreferenceControllers(Context context) { |
| 248 | return buildPreferenceControllers(context, this); |
| 249 | } |
| 250 | |
| 251 | private static List<AbstractPreferenceController> buildPreferenceControllers(Context context, |
| 252 | WifiTetherBasePreferenceController.OnTetherConfigUpdateListener listener) { |
| 253 | final List<AbstractPreferenceController> controllers = new ArrayList<>(); |
| 254 | controllers.add( |
| 255 | new WifiTetherSSIDPreferenceController(context, listener)); |
| 256 | controllers.add( |
| 257 | new WifiTetherPasswordPreferenceController(context, listener)); |
| 258 | controllers.add( |
| 259 | new WifiTetherApBandPreferenceController(context, listener)); |
| 260 | controllers.add( |
| 261 | new WifiTetherSecurityPreferenceController(context, listener)); |
| 262 | controllers.add( |
| 263 | new WifiTetherAutoOffPreferenceController(context, KEY_WIFI_TETHER_AUTO_OFF)); |
| 264 | |
| 265 | return controllers; |
| 266 | } |
| 267 | |
| 268 | @Override |
| 269 | protected int getPreferenceScreenResId() { |
| 270 | return R.xml.all_tether_prefs; |
| 271 | } |
| 272 | |
| 273 | @Override |
| 274 | protected String getLogTag() { |
| 275 | return TAG; |
| 276 | } |
| 277 | |
| 278 | @Override |
| 279 | public void onExpandButtonClick() { |
| 280 | super.onExpandButtonClick(); |
| 281 | // TODO(b/147325229): Display hidden advanced settings like security and ap band. |
| 282 | } |
| 283 | |
| 284 | @Override |
| 285 | public int getHelpResource() { |
| 286 | return R.string.help_url_tether; |
| 287 | } |
| 288 | |
| 289 | @Override |
| 290 | public void onTetherConfigUpdated(AbstractPreferenceController controller) { |
| 291 | final SoftApConfiguration config = buildNewConfig(); |
| 292 | mPasswordPreferenceController.updateVisibility(config.getSecurityType()); |
| 293 | mWifiManager.setSoftApConfiguration(config); |
| 294 | |
| 295 | if (mWifiManager.getWifiApState() == WifiManager.WIFI_AP_STATE_ENABLED) { |
| 296 | if (Log.isLoggable(TAG, Log.DEBUG)) { |
| 297 | Log.d(TAG, "Wifi AP config changed while enabled, stop and restart"); |
| 298 | } |
| 299 | mRestartWifiApAfterConfigChange = true; |
| 300 | // TODO(b/147322704): Use TethetEnabler to stop tethering. |
| 301 | mConnectivityManager.stopTethering(TETHERING_WIFI); |
| 302 | } |
| 303 | |
| 304 | if (controller instanceof WifiTetherSecurityPreferenceController) { |
| 305 | reConfigInitialExpandedChildCount(); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | private SoftApConfiguration buildNewConfig() { |
| 310 | final SoftApConfiguration.Builder configBuilder = new SoftApConfiguration.Builder(); |
| 311 | final int securityType = mSecurityPreferenceController.getSecurityType(); |
| 312 | configBuilder.setSsid(mSSIDPreferenceController.getSSID()); |
| 313 | if (securityType == SoftApConfiguration.SECURITY_TYPE_WPA2_PSK) { |
| 314 | configBuilder.setPassphrase( |
| 315 | mPasswordPreferenceController.getPasswordValidated(securityType), |
| 316 | SoftApConfiguration.SECURITY_TYPE_WPA2_PSK); |
| 317 | } |
| 318 | configBuilder.setBand(mApBandPreferenceController.getBandIndex()); |
| 319 | return configBuilder.build(); |
| 320 | } |
| 321 | |
| 322 | private void updateDisplayWithNewConfig() { |
| 323 | mSSIDPreferenceController.updateDisplay(); |
| 324 | mSecurityPreferenceController.updateDisplay(); |
| 325 | mPasswordPreferenceController.updateDisplay(); |
| 326 | mApBandPreferenceController.updateDisplay(); |
| 327 | } |
| 328 | |
| 329 | @Override |
| 330 | public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { |
| 331 | if (TextUtils.equals(key, KEY_ENABLE_WIFI_TETHERING)) { |
| 332 | mWifiTetherChosen = sharedPreferences.getBoolean(KEY_ENABLE_WIFI_TETHERING, true); |
| 333 | mWifiTetherGroup.setVisible(mWifiTetherChosen); |
| 334 | reConfigInitialExpandedChildCount(); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | private void startTether() { |
| 339 | // TODO(b/147322704): Use TetherEnabler to start tethering. |
| 340 | if (mWifiManager.isWifiApEnabled()) { |
| 341 | return; |
| 342 | } |
| 343 | mConnectivityManager.startTethering(ConnectivityManager.TETHERING_WIFI, |
| 344 | true /*showProvisioningUi*/, |
| 345 | new ConnectivityManager.OnStartTetheringCallback() { |
| 346 | @Override |
| 347 | public void onTetheringFailed() { |
| 348 | super.onTetheringFailed(); |
| 349 | // Do nothing. There is no UI to update at this point. |
| 350 | } |
| 351 | }, |
| 352 | new Handler(Looper.getMainLooper())); |
| 353 | } |
| 354 | |
| 355 | private void reConfigInitialExpandedChildCount() { |
| 356 | getPreferenceScreen().setInitialExpandedChildrenCount(getInitialExpandedChildCount()); |
| 357 | } |
| 358 | |
| 359 | @Override |
| 360 | public int getInitialExpandedChildCount() { |
| 361 | if (!mWifiTetherChosen) { |
| 362 | // Expand all preferences in the screen. |
| 363 | return getPreferenceScreen().getPreferenceCount(); |
| 364 | } |
| 365 | |
| 366 | if (mSecurityPreferenceController == null) { |
| 367 | return EXPANDED_CHILD_COUNT_DEFAULT; |
| 368 | } |
| 369 | |
| 370 | return (mSecurityPreferenceController.getSecurityType() |
| 371 | == SoftApConfiguration.SECURITY_TYPE_OPEN) |
| 372 | ? EXPANDED_CHILD_COUNT_WITH_SECURITY_NON : EXPANDED_CHILD_COUNT_DEFAULT; |
| 373 | } |
| 374 | |
| 375 | public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = |
| 376 | new BaseSearchIndexProvider(R.xml.all_tether_prefs) { |
| 377 | |
| 378 | @Override |
| 379 | public List<String> getNonIndexableKeys(Context context) { |
| 380 | final List<String> keys = super.getNonIndexableKeys(context); |
| 381 | |
| 382 | if (!TetherUtil.isTetherAvailable(context)) { |
| 383 | keys.add(KEY_TETHER_PREFS_SCREEN); |
| 384 | keys.add(KEY_WIFI_TETHER_NETWORK_NAME); |
| 385 | keys.add(KEY_WIFI_TETHER_NETWORK_PASSWORD); |
| 386 | keys.add(KEY_WIFI_TETHER_AUTO_OFF); |
| 387 | keys.add(KEY_WIFI_TETHER_NETWORK_AP_BAND); |
| 388 | } |
| 389 | |
| 390 | return keys; |
| 391 | } |
| 392 | |
| 393 | @Override |
| 394 | public List<AbstractPreferenceController> createPreferenceControllers( |
| 395 | Context context) { |
| 396 | return buildPreferenceControllers(context, null /* AllTetherSettings */); |
| 397 | } |
| 398 | }; |
| 399 | } |