WifiServiceImpl.java revision 1545f9403866abab36163eea9df7d18d3a388e98
1/* 2 * Copyright (C) 2010 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 17package com.android.server.wifi; 18 19import static android.net.wifi.WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE; 20import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_FAILURE_REASON; 21import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_STATE; 22import static android.net.wifi.WifiManager.LocalOnlyHotspotCallback.ERROR_GENERIC; 23import static android.net.wifi.WifiManager.LocalOnlyHotspotCallback.ERROR_NO_CHANNEL; 24import static android.net.wifi.WifiManager.SAP_START_FAILURE_NO_CHANNEL; 25import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 26import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 27import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 28 29import static com.android.server.connectivity.tethering.IControlsTethering.STATE_LOCAL_ONLY; 30import static com.android.server.connectivity.tethering.IControlsTethering.STATE_TETHERED; 31import static com.android.server.wifi.LocalOnlyHotspotRequestInfo.HOTSPOT_NO_ERROR; 32import static com.android.server.wifi.WifiController.CMD_AIRPLANE_TOGGLED; 33import static com.android.server.wifi.WifiController.CMD_BATTERY_CHANGED; 34import static com.android.server.wifi.WifiController.CMD_EMERGENCY_CALL_STATE_CHANGED; 35import static com.android.server.wifi.WifiController.CMD_EMERGENCY_MODE_CHANGED; 36import static com.android.server.wifi.WifiController.CMD_LOCKS_CHANGED; 37import static com.android.server.wifi.WifiController.CMD_SCAN_ALWAYS_MODE_CHANGED; 38import static com.android.server.wifi.WifiController.CMD_SCREEN_OFF; 39import static com.android.server.wifi.WifiController.CMD_SCREEN_ON; 40import static com.android.server.wifi.WifiController.CMD_SET_AP; 41import static com.android.server.wifi.WifiController.CMD_USER_PRESENT; 42import static com.android.server.wifi.WifiController.CMD_WIFI_TOGGLED; 43 44import android.Manifest; 45import android.app.ActivityManager; 46import android.app.ActivityManager.RunningAppProcessInfo; 47import android.app.AppOpsManager; 48import android.bluetooth.BluetoothAdapter; 49import android.content.BroadcastReceiver; 50import android.content.Context; 51import android.content.Intent; 52import android.content.IntentFilter; 53import android.content.pm.ApplicationInfo; 54import android.content.pm.PackageManager; 55import android.content.pm.ParceledListSlice; 56import android.database.ContentObserver; 57import android.net.DhcpInfo; 58import android.net.DhcpResults; 59import android.net.IpConfiguration; 60import android.net.Network; 61import android.net.NetworkUtils; 62import android.net.StaticIpConfiguration; 63import android.net.Uri; 64import android.net.ip.IpManager; 65import android.net.wifi.IWifiManager; 66import android.net.wifi.ScanResult; 67import android.net.wifi.ScanSettings; 68import android.net.wifi.WifiActivityEnergyInfo; 69import android.net.wifi.WifiConfiguration; 70import android.net.wifi.WifiConnectionStatistics; 71import android.net.wifi.WifiInfo; 72import android.net.wifi.WifiLinkLayerStats; 73import android.net.wifi.WifiManager; 74import android.net.wifi.WifiManager.LocalOnlyHotspotCallback; 75import android.net.wifi.WifiScanner; 76import android.net.wifi.hotspot2.PasspointConfiguration; 77import android.os.AsyncTask; 78import android.os.BatteryStats; 79import android.os.Binder; 80import android.os.Build; 81import android.os.Bundle; 82import android.os.HandlerThread; 83import android.os.IBinder; 84import android.os.Looper; 85import android.os.Message; 86import android.os.Messenger; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.ResultReceiver; 91import android.os.ShellCallback; 92import android.os.UserHandle; 93import android.os.UserManager; 94import android.os.WorkSource; 95import android.provider.Settings; 96import android.util.ArrayMap; 97import android.util.ArraySet; 98import android.util.Log; 99import android.util.Slog; 100 101import com.android.internal.annotations.GuardedBy; 102import com.android.internal.annotations.VisibleForTesting; 103import com.android.internal.telephony.IccCardConstants; 104import com.android.internal.telephony.PhoneConstants; 105import com.android.internal.telephony.TelephonyIntents; 106import com.android.internal.util.AsyncChannel; 107import com.android.server.wifi.hotspot2.PasspointProvider; 108import com.android.server.wifi.util.WifiHandler; 109import com.android.server.wifi.util.WifiPermissionsUtil; 110 111import java.io.BufferedReader; 112import java.io.FileDescriptor; 113import java.io.FileNotFoundException; 114import java.io.FileReader; 115import java.io.IOException; 116import java.io.PrintWriter; 117import java.net.Inet4Address; 118import java.net.InetAddress; 119import java.security.GeneralSecurityException; 120import java.security.KeyStore; 121import java.security.cert.CertPath; 122import java.security.cert.CertPathValidator; 123import java.security.cert.CertificateFactory; 124import java.security.cert.PKIXParameters; 125import java.security.cert.X509Certificate; 126import java.util.ArrayList; 127import java.util.Arrays; 128import java.util.HashMap; 129import java.util.List; 130import java.util.concurrent.ConcurrentHashMap; 131 132/** 133 * WifiService handles remote WiFi operation requests by implementing 134 * the IWifiManager interface. 135 * 136 * @hide 137 */ 138public class WifiServiceImpl extends IWifiManager.Stub { 139 private static final String TAG = "WifiService"; 140 private static final boolean DBG = true; 141 private static final boolean VDBG = false; 142 143 // Package names for Settings, QuickSettings and QuickQuickSettings 144 private static final String SYSUI_PACKAGE_NAME = "com.android.systemui"; 145 private static final String SETTINGS_PACKAGE_NAME = "com.android.settings"; 146 147 // Default scan background throttling interval if not overriden in settings 148 private static final long DEFAULT_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS = 30 * 60 * 1000; 149 150 // Apps with importance higher than this value is considered as background app. 151 private static final int BACKGROUND_IMPORTANCE_CUTOFF = 152 RunningAppProcessInfo.IMPORTANCE_FOREGROUND_SERVICE; 153 154 final WifiStateMachine mWifiStateMachine; 155 156 private final Context mContext; 157 private final FrameworkFacade mFacade; 158 private final Clock mClock; 159 private final ArraySet<String> mBackgroundThrottlePackageWhitelist = new ArraySet<>(); 160 161 private final PowerManager mPowerManager; 162 private final AppOpsManager mAppOps; 163 private final UserManager mUserManager; 164 private final ActivityManager mActivityManager; 165 private final WifiCountryCode mCountryCode; 166 private long mBackgroundThrottleInterval; 167 // Debug counter tracking scan requests sent by WifiManager 168 private int scanRequestCounter = 0; 169 170 /* Tracks the open wi-fi network notification */ 171 private WifiNotificationController mNotificationController; 172 /* Polls traffic stats and notifies clients */ 173 private WifiTrafficPoller mTrafficPoller; 174 /* Tracks the persisted states for wi-fi & airplane mode */ 175 final WifiSettingsStore mSettingsStore; 176 /* Logs connection events and some general router and scan stats */ 177 private final WifiMetrics mWifiMetrics; 178 /* Manages affiliated certificates for current user */ 179 private final WifiCertManager mCertManager; 180 181 private final WifiInjector mWifiInjector; 182 /* Backup/Restore Module */ 183 private final WifiBackupRestore mWifiBackupRestore; 184 185 // Map of package name of background scan apps and last scan timestamp. 186 private final ArrayMap<String, Long> mLastScanTimestamps; 187 188 private WifiScanner mWifiScanner; 189 private WifiLog mLog; 190 191 /** 192 * Asynchronous channel to WifiStateMachine 193 */ 194 private AsyncChannel mWifiStateMachineChannel; 195 196 private final boolean mPermissionReviewRequired; 197 private final FrameworkFacade mFrameworkFacade; 198 199 private WifiPermissionsUtil mWifiPermissionsUtil; 200 201 @GuardedBy("mLocalOnlyHotspotRequests") 202 private final HashMap<Integer, LocalOnlyHotspotRequestInfo> mLocalOnlyHotspotRequests; 203 @GuardedBy("mLocalOnlyHotspotRequests") 204 private WifiConfiguration mLocalOnlyHotspotConfig = null; 205 @GuardedBy("mLocalOnlyHotspotRequests") 206 private final ConcurrentHashMap<String, Integer> mIfaceIpModes; 207 208 /** 209 * Callback for use with LocalOnlyHotspot to unregister requesting applications upon death. 210 * 211 * @hide 212 */ 213 public final class LocalOnlyRequestorCallback 214 implements LocalOnlyHotspotRequestInfo.RequestingApplicationDeathCallback { 215 /** 216 * Called with requesting app has died. 217 */ 218 @Override 219 public void onLocalOnlyHotspotRequestorDeath(LocalOnlyHotspotRequestInfo requestor) { 220 unregisterCallingAppAndStopLocalOnlyHotspot(requestor); 221 }; 222 } 223 224 /** 225 * Handles client connections 226 */ 227 private class ClientHandler extends WifiHandler { 228 229 ClientHandler(String tag, Looper looper) { 230 super(tag, looper); 231 } 232 233 @Override 234 public void handleMessage(Message msg) { 235 super.handleMessage(msg); 236 switch (msg.what) { 237 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 238 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 239 if (DBG) Slog.d(TAG, "New client listening to asynchronous messages"); 240 // We track the clients by the Messenger 241 // since it is expected to be always available 242 mTrafficPoller.addClient(msg.replyTo); 243 } else { 244 Slog.e(TAG, "Client connection failure, error=" + msg.arg1); 245 } 246 break; 247 } 248 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 249 if (msg.arg1 == AsyncChannel.STATUS_SEND_UNSUCCESSFUL) { 250 if (DBG) Slog.d(TAG, "Send failed, client connection lost"); 251 } else { 252 if (DBG) Slog.d(TAG, "Client connection lost with reason: " + msg.arg1); 253 } 254 mTrafficPoller.removeClient(msg.replyTo); 255 break; 256 } 257 case AsyncChannel.CMD_CHANNEL_FULL_CONNECTION: { 258 AsyncChannel ac = mFrameworkFacade.makeWifiAsyncChannel(TAG); 259 ac.connect(mContext, this, msg.replyTo); 260 break; 261 } 262 case WifiManager.CONNECT_NETWORK: { 263 WifiConfiguration config = (WifiConfiguration) msg.obj; 264 int networkId = msg.arg1; 265 Slog.d("WiFiServiceImpl ", "CONNECT " 266 + " nid=" + Integer.toString(networkId) 267 + " uid=" + msg.sendingUid 268 + " name=" 269 + mContext.getPackageManager().getNameForUid(msg.sendingUid)); 270 if (config != null && isValid(config)) { 271 if (DBG) Slog.d(TAG, "Connect with config " + config); 272 /* Command is forwarded to state machine */ 273 mWifiStateMachine.sendMessage(Message.obtain(msg)); 274 } else if (config == null 275 && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 276 if (DBG) Slog.d(TAG, "Connect with networkId " + networkId); 277 mWifiStateMachine.sendMessage(Message.obtain(msg)); 278 } else { 279 Slog.e(TAG, "ClientHandler.handleMessage ignoring invalid msg=" + msg); 280 replyFailed(msg, WifiManager.CONNECT_NETWORK_FAILED, 281 WifiManager.INVALID_ARGS); 282 } 283 break; 284 } 285 case WifiManager.SAVE_NETWORK: { 286 WifiConfiguration config = (WifiConfiguration) msg.obj; 287 int networkId = msg.arg1; 288 Slog.d("WiFiServiceImpl ", "SAVE" 289 + " nid=" + Integer.toString(networkId) 290 + " uid=" + msg.sendingUid 291 + " name=" 292 + mContext.getPackageManager().getNameForUid(msg.sendingUid)); 293 if (config != null && isValid(config)) { 294 if (DBG) Slog.d(TAG, "Save network with config " + config); 295 /* Command is forwarded to state machine */ 296 mWifiStateMachine.sendMessage(Message.obtain(msg)); 297 } else { 298 Slog.e(TAG, "ClientHandler.handleMessage ignoring invalid msg=" + msg); 299 replyFailed(msg, WifiManager.SAVE_NETWORK_FAILED, 300 WifiManager.INVALID_ARGS); 301 } 302 break; 303 } 304 case WifiManager.FORGET_NETWORK: 305 mWifiStateMachine.sendMessage(Message.obtain(msg)); 306 break; 307 case WifiManager.START_WPS: 308 case WifiManager.CANCEL_WPS: 309 case WifiManager.DISABLE_NETWORK: 310 case WifiManager.RSSI_PKTCNT_FETCH: { 311 mWifiStateMachine.sendMessage(Message.obtain(msg)); 312 break; 313 } 314 default: { 315 Slog.d(TAG, "ClientHandler.handleMessage ignoring msg=" + msg); 316 break; 317 } 318 } 319 } 320 321 private void replyFailed(Message msg, int what, int why) { 322 if (msg.replyTo == null) return; 323 Message reply = Message.obtain(); 324 reply.what = what; 325 reply.arg1 = why; 326 try { 327 msg.replyTo.send(reply); 328 } catch (RemoteException e) { 329 // There's not much we can do if reply can't be sent! 330 } 331 } 332 } 333 private ClientHandler mClientHandler; 334 335 /** 336 * Handles interaction with WifiStateMachine 337 */ 338 private class WifiStateMachineHandler extends WifiHandler { 339 private AsyncChannel mWsmChannel; 340 341 WifiStateMachineHandler(String tag, Looper looper, AsyncChannel asyncChannel) { 342 super(tag, looper); 343 mWsmChannel = asyncChannel; 344 mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); 345 } 346 347 @Override 348 public void handleMessage(Message msg) { 349 super.handleMessage(msg); 350 switch (msg.what) { 351 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 352 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 353 mWifiStateMachineChannel = mWsmChannel; 354 } else { 355 Slog.e(TAG, "WifiStateMachine connection failure, error=" + msg.arg1); 356 mWifiStateMachineChannel = null; 357 } 358 break; 359 } 360 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 361 Slog.e(TAG, "WifiStateMachine channel lost, msg.arg1 =" + msg.arg1); 362 mWifiStateMachineChannel = null; 363 //Re-establish connection to state machine 364 mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); 365 break; 366 } 367 default: { 368 Slog.d(TAG, "WifiStateMachineHandler.handleMessage ignoring msg=" + msg); 369 break; 370 } 371 } 372 } 373 } 374 375 WifiStateMachineHandler mWifiStateMachineHandler; 376 private WifiController mWifiController; 377 private final WifiLockManager mWifiLockManager; 378 private final WifiMulticastLockManager mWifiMulticastLockManager; 379 380 public WifiServiceImpl(Context context, WifiInjector wifiInjector, AsyncChannel asyncChannel) { 381 mContext = context; 382 mWifiInjector = wifiInjector; 383 mClock = wifiInjector.getClock(); 384 385 mFacade = mWifiInjector.getFrameworkFacade(); 386 mWifiMetrics = mWifiInjector.getWifiMetrics(); 387 mTrafficPoller = mWifiInjector.getWifiTrafficPoller(); 388 mUserManager = mWifiInjector.getUserManager(); 389 mCountryCode = mWifiInjector.getWifiCountryCode(); 390 mWifiStateMachine = mWifiInjector.getWifiStateMachine(); 391 mWifiStateMachine.enableRssiPolling(true); 392 mSettingsStore = mWifiInjector.getWifiSettingsStore(); 393 mPowerManager = mContext.getSystemService(PowerManager.class); 394 mAppOps = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); 395 mActivityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 396 mCertManager = mWifiInjector.getWifiCertManager(); 397 mNotificationController = mWifiInjector.getWifiNotificationController(); 398 mWifiLockManager = mWifiInjector.getWifiLockManager(); 399 mWifiMulticastLockManager = mWifiInjector.getWifiMulticastLockManager(); 400 HandlerThread wifiServiceHandlerThread = mWifiInjector.getWifiServiceHandlerThread(); 401 mClientHandler = new ClientHandler(TAG, wifiServiceHandlerThread.getLooper()); 402 mWifiStateMachineHandler = new WifiStateMachineHandler(TAG, 403 wifiServiceHandlerThread.getLooper(), asyncChannel); 404 mWifiController = mWifiInjector.getWifiController(); 405 mWifiBackupRestore = mWifiInjector.getWifiBackupRestore(); 406 mPermissionReviewRequired = Build.PERMISSIONS_REVIEW_REQUIRED 407 || context.getResources().getBoolean( 408 com.android.internal.R.bool.config_permissionReviewRequired); 409 mWifiPermissionsUtil = mWifiInjector.getWifiPermissionsUtil(); 410 mLog = mWifiInjector.makeLog(TAG); 411 mFrameworkFacade = wifiInjector.getFrameworkFacade(); 412 mLastScanTimestamps = new ArrayMap<>(); 413 updateBackgroundThrottleInterval(); 414 updateBackgroundThrottlingWhitelist(); 415 mIfaceIpModes = new ConcurrentHashMap<>(); 416 mLocalOnlyHotspotRequests = new HashMap<>(); 417 enableVerboseLoggingInternal(getVerboseLoggingLevel()); 418 } 419 420 /** 421 * Provide a way for unit tests to set valid log object in the WifiHandler 422 * @param log WifiLog object to assign to the clientHandler 423 */ 424 @VisibleForTesting 425 public void setWifiHandlerLogForTest(WifiLog log) { 426 mClientHandler.setWifiLog(log); 427 } 428 429 /** 430 * Check if we are ready to start wifi. 431 * 432 * First check if we will be restarting system services to decrypt the device. If the device is 433 * not encrypted, check if Wi-Fi needs to be enabled and start if needed 434 * 435 * This function is used only at boot time. 436 */ 437 public void checkAndStartWifi() { 438 // First check if we will end up restarting WifiService 439 if (mFrameworkFacade.inStorageManagerCryptKeeperBounce()) { 440 Log.d(TAG, "Device still encrypted. Need to restart SystemServer. Do not start wifi."); 441 return; 442 } 443 444 // Check if wi-fi needs to be enabled 445 boolean wifiEnabled = mSettingsStore.isWifiToggleEnabled(); 446 Slog.i(TAG, "WifiService starting up with Wi-Fi " + 447 (wifiEnabled ? "enabled" : "disabled")); 448 449 registerForScanModeChange(); 450 registerForBackgroundThrottleChanges(); 451 mContext.registerReceiver( 452 new BroadcastReceiver() { 453 @Override 454 public void onReceive(Context context, Intent intent) { 455 if (mSettingsStore.handleAirplaneModeToggled()) { 456 mWifiController.sendMessage(CMD_AIRPLANE_TOGGLED); 457 } 458 if (mSettingsStore.isAirplaneModeOn()) { 459 Log.d(TAG, "resetting country code because Airplane mode is ON"); 460 mCountryCode.airplaneModeEnabled(); 461 } 462 } 463 }, 464 new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED)); 465 466 mContext.registerReceiver( 467 new BroadcastReceiver() { 468 @Override 469 public void onReceive(Context context, Intent intent) { 470 String state = intent.getStringExtra(IccCardConstants.INTENT_KEY_ICC_STATE); 471 if (IccCardConstants.INTENT_VALUE_ICC_ABSENT.equals(state)) { 472 Log.d(TAG, "resetting networks because SIM was removed"); 473 mWifiStateMachine.resetSimAuthNetworks(false); 474 Log.d(TAG, "resetting country code because SIM is removed"); 475 mCountryCode.simCardRemoved(); 476 } else if (IccCardConstants.INTENT_VALUE_ICC_LOADED.equals(state)) { 477 Log.d(TAG, "resetting networks because SIM was loaded"); 478 mWifiStateMachine.resetSimAuthNetworks(true); 479 } 480 } 481 }, 482 new IntentFilter(TelephonyIntents.ACTION_SIM_STATE_CHANGED)); 483 484 mContext.registerReceiver( 485 new BroadcastReceiver() { 486 @Override 487 public void onReceive(Context context, Intent intent) { 488 final int currentState = intent.getIntExtra(EXTRA_WIFI_AP_STATE, 489 WIFI_AP_STATE_DISABLED); 490 final int prevState = intent.getIntExtra(EXTRA_PREVIOUS_WIFI_AP_STATE, 491 WIFI_AP_STATE_DISABLED); 492 final int errorCode = intent.getIntExtra(EXTRA_WIFI_AP_FAILURE_REASON, 493 HOTSPOT_NO_ERROR); 494 handleWifiApStateChange(currentState, prevState, errorCode); 495 } 496 }, 497 new IntentFilter(WifiManager.WIFI_AP_STATE_CHANGED_ACTION)); 498 499 // Adding optimizations of only receiving broadcasts when wifi is enabled 500 // can result in race conditions when apps toggle wifi in the background 501 // without active user involvement. Always receive broadcasts. 502 registerForBroadcasts(); 503 registerForPackageOrUserRemoval(); 504 mInIdleMode = mPowerManager.isDeviceIdleMode(); 505 506 if (!mWifiStateMachine.syncInitialize(mWifiStateMachineChannel)) { 507 Log.wtf(TAG, "Failed to initialize WifiStateMachine"); 508 } 509 mWifiController.start(); 510 511 // If we are already disabled (could be due to airplane mode), avoid changing persist 512 // state here 513 if (wifiEnabled) { 514 try { 515 setWifiEnabled(mContext.getPackageName(), wifiEnabled); 516 } catch (RemoteException e) { 517 /* ignore - local call */ 518 } 519 } 520 } 521 522 public void handleUserSwitch(int userId) { 523 mWifiStateMachine.handleUserSwitch(userId); 524 } 525 526 public void handleUserUnlock(int userId) { 527 mWifiStateMachine.handleUserUnlock(userId); 528 } 529 530 public void handleUserStop(int userId) { 531 mWifiStateMachine.handleUserStop(userId); 532 } 533 534 /** 535 * see {@link android.net.wifi.WifiManager#startScan} 536 * and {@link android.net.wifi.WifiManager#startCustomizedScan} 537 * 538 * @param settings If null, use default parameter, i.e. full scan. 539 * @param workSource If null, all blame is given to the calling uid. 540 * @param packageName Package name of the app that requests wifi scan. 541 */ 542 @Override 543 public void startScan(ScanSettings settings, WorkSource workSource, String packageName) { 544 enforceChangePermission(); 545 546 mLog.trace("startScan uid=%").c(Binder.getCallingUid()).flush(); 547 // Check and throttle background apps for wifi scan. 548 if (isRequestFromBackground(packageName)) { 549 long lastScanMs = mLastScanTimestamps.getOrDefault(packageName, 0L); 550 long elapsedRealtime = mClock.getElapsedSinceBootMillis(); 551 552 if (lastScanMs != 0 && (elapsedRealtime - lastScanMs) < mBackgroundThrottleInterval) { 553 sendFailedScanBroadcast(); 554 return; 555 } 556 // Proceed with the scan request and record the time. 557 mLastScanTimestamps.put(packageName, elapsedRealtime); 558 } 559 synchronized (this) { 560 if (mWifiScanner == null) { 561 mWifiScanner = mWifiInjector.getWifiScanner(); 562 } 563 if (mInIdleMode) { 564 // Need to send an immediate scan result broadcast in case the 565 // caller is waiting for a result .. 566 567 // TODO: investigate if the logic to cancel scans when idle can move to 568 // WifiScanningServiceImpl. This will 1 - clean up WifiServiceImpl and 2 - 569 // avoid plumbing an awkward path to report a cancelled/failed scan. This will 570 // be sent directly until b/31398592 is fixed. 571 sendFailedScanBroadcast(); 572 mScanPending = true; 573 return; 574 } 575 } 576 if (settings != null) { 577 settings = new ScanSettings(settings); 578 if (!settings.isValid()) { 579 Slog.e(TAG, "invalid scan setting"); 580 return; 581 } 582 } 583 if (workSource != null) { 584 enforceWorkSourcePermission(); 585 // WifiManager currently doesn't use names, so need to clear names out of the 586 // supplied WorkSource to allow future WorkSource combining. 587 workSource.clearNames(); 588 } 589 if (workSource == null && Binder.getCallingUid() >= 0) { 590 workSource = new WorkSource(Binder.getCallingUid()); 591 } 592 mWifiStateMachine.startScan(Binder.getCallingUid(), scanRequestCounter++, 593 settings, workSource); 594 } 595 596 // Send a failed scan broadcast to indicate the current scan request failed. 597 private void sendFailedScanBroadcast() { 598 // clear calling identity to send broadcast 599 long callingIdentity = Binder.clearCallingIdentity(); 600 try { 601 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 602 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 603 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, false); 604 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 605 } finally { 606 // restore calling identity 607 Binder.restoreCallingIdentity(callingIdentity); 608 } 609 610 } 611 612 // Check if the request comes from background. 613 private boolean isRequestFromBackground(String packageName) { 614 // Requests from system or wifi are not background. 615 if (Binder.getCallingUid() == Process.SYSTEM_UID 616 || Binder.getCallingUid() == Process.WIFI_UID) { 617 return false; 618 } 619 mAppOps.checkPackage(Binder.getCallingUid(), packageName); 620 if (mBackgroundThrottlePackageWhitelist.contains(packageName)) { 621 return false; 622 } 623 624 // getPackageImportance requires PACKAGE_USAGE_STATS permission, so clearing the incoming 625 // identify so the permission check can be done on system process where wifi runs in. 626 long callingIdentity = Binder.clearCallingIdentity(); 627 try { 628 return mActivityManager.getPackageImportance(packageName) 629 > BACKGROUND_IMPORTANCE_CUTOFF; 630 } finally { 631 Binder.restoreCallingIdentity(callingIdentity); 632 } 633 } 634 635 @Override 636 public String getCurrentNetworkWpsNfcConfigurationToken() { 637 enforceConnectivityInternalPermission(); 638 mLog.trace("getCurrentNetworkWpsNfcConfigurationToken uid=%") 639 .c(Binder.getCallingUid()).flush(); 640 // TODO Add private logging for netId b/33807876 641 return mWifiStateMachine.syncGetCurrentNetworkWpsNfcConfigurationToken(); 642 } 643 644 boolean mInIdleMode; 645 boolean mScanPending; 646 647 void handleIdleModeChanged() { 648 boolean doScan = false; 649 synchronized (this) { 650 boolean idle = mPowerManager.isDeviceIdleMode(); 651 if (mInIdleMode != idle) { 652 mInIdleMode = idle; 653 if (!idle) { 654 if (mScanPending) { 655 mScanPending = false; 656 doScan = true; 657 } 658 } 659 } 660 } 661 if (doScan) { 662 // Someone requested a scan while we were idle; do a full scan now. 663 // The package name doesn't matter as the request comes from System UID. 664 startScan(null, null, ""); 665 } 666 } 667 668 private void enforceNetworkSettingsPermission() { 669 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.NETWORK_SETTINGS, 670 "WifiService"); 671 } 672 673 private void enforceNetworkStackPermission() { 674 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.NETWORK_STACK, 675 "WifiService"); 676 } 677 678 private void enforceAccessPermission() { 679 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.ACCESS_WIFI_STATE, 680 "WifiService"); 681 } 682 683 private void enforceChangePermission() { 684 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.CHANGE_WIFI_STATE, 685 "WifiService"); 686 } 687 688 private void enforceLocationHardwarePermission() { 689 mContext.enforceCallingOrSelfPermission(Manifest.permission.LOCATION_HARDWARE, 690 "LocationHardware"); 691 } 692 693 private void enforceReadCredentialPermission() { 694 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.READ_WIFI_CREDENTIAL, 695 "WifiService"); 696 } 697 698 private void enforceWorkSourcePermission() { 699 mContext.enforceCallingPermission(android.Manifest.permission.UPDATE_DEVICE_STATS, 700 "WifiService"); 701 702 } 703 704 private void enforceMulticastChangePermission() { 705 mContext.enforceCallingOrSelfPermission( 706 android.Manifest.permission.CHANGE_WIFI_MULTICAST_STATE, 707 "WifiService"); 708 } 709 710 private void enforceConnectivityInternalPermission() { 711 mContext.enforceCallingOrSelfPermission( 712 android.Manifest.permission.CONNECTIVITY_INTERNAL, 713 "ConnectivityService"); 714 } 715 716 private void enforceLocationPermission(String pkgName, int uid) { 717 mWifiPermissionsUtil.enforceLocationPermission(pkgName, uid); 718 } 719 720 /** 721 * see {@link android.net.wifi.WifiManager#setWifiEnabled(boolean)} 722 * @param enable {@code true} to enable, {@code false} to disable. 723 * @return {@code true} if the enable/disable operation was 724 * started or is already in the queue. 725 */ 726 @Override 727 public synchronized boolean setWifiEnabled(String packageName, boolean enable) 728 throws RemoteException { 729 enforceChangePermission(); 730 Slog.d(TAG, "setWifiEnabled: " + enable + " pid=" + Binder.getCallingPid() 731 + ", uid=" + Binder.getCallingUid() + ", package=" + packageName); 732 mLog.trace("setWifiEnabled package=% uid=% enable=%").c(packageName) 733 .c(Binder.getCallingUid()).c(enable).flush(); 734 735 // If SoftAp is enabled, only Settings is allowed to toggle wifi 736 boolean apEnabled = 737 mWifiStateMachine.syncGetWifiApState() != WifiManager.WIFI_AP_STATE_DISABLED; 738 boolean isFromSettings = 739 packageName.equals(SYSUI_PACKAGE_NAME) || packageName.equals(SETTINGS_PACKAGE_NAME); 740 if (apEnabled && !isFromSettings) { 741 mLog.trace("setWifiEnabled SoftAp not disabled: only Settings can enable wifi").flush(); 742 return false; 743 } 744 745 /* 746 * Caller might not have WRITE_SECURE_SETTINGS, 747 * only CHANGE_WIFI_STATE is enforced 748 */ 749 long ident = Binder.clearCallingIdentity(); 750 try { 751 if (! mSettingsStore.handleWifiToggled(enable)) { 752 // Nothing to do if wifi cannot be toggled 753 return true; 754 } 755 } finally { 756 Binder.restoreCallingIdentity(ident); 757 } 758 759 760 if (mPermissionReviewRequired) { 761 final int wiFiEnabledState = getWifiEnabledState(); 762 if (enable) { 763 if (wiFiEnabledState == WifiManager.WIFI_STATE_DISABLING 764 || wiFiEnabledState == WifiManager.WIFI_STATE_DISABLED) { 765 if (startConsentUi(packageName, Binder.getCallingUid(), 766 WifiManager.ACTION_REQUEST_ENABLE)) { 767 return true; 768 } 769 } 770 } else if (wiFiEnabledState == WifiManager.WIFI_STATE_ENABLING 771 || wiFiEnabledState == WifiManager.WIFI_STATE_ENABLED) { 772 if (startConsentUi(packageName, Binder.getCallingUid(), 773 WifiManager.ACTION_REQUEST_DISABLE)) { 774 return true; 775 } 776 } 777 } 778 779 mWifiController.sendMessage(CMD_WIFI_TOGGLED); 780 return true; 781 } 782 783 /** 784 * see {@link WifiManager#getWifiState()} 785 * @return One of {@link WifiManager#WIFI_STATE_DISABLED}, 786 * {@link WifiManager#WIFI_STATE_DISABLING}, 787 * {@link WifiManager#WIFI_STATE_ENABLED}, 788 * {@link WifiManager#WIFI_STATE_ENABLING}, 789 * {@link WifiManager#WIFI_STATE_UNKNOWN} 790 */ 791 @Override 792 public int getWifiEnabledState() { 793 enforceAccessPermission(); 794 mLog.trace("getWifiEnabledState uid=%").c(Binder.getCallingUid()).flush(); 795 return mWifiStateMachine.syncGetWifiState(); 796 } 797 798 /** 799 * see {@link android.net.wifi.WifiManager#setWifiApEnabled(WifiConfiguration, boolean)} 800 * @param wifiConfig SSID, security and channel details as 801 * part of WifiConfiguration 802 * @param enabled true to enable and false to disable 803 */ 804 @Override 805 public void setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) { 806 enforceChangePermission(); 807 mWifiPermissionsUtil.enforceTetherChangePermission(mContext); 808 809 mLog.trace("setWifiApEnabled uid=% enable=%").c(Binder.getCallingUid()).c(enabled).flush(); 810 811 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 812 throw new SecurityException("DISALLOW_CONFIG_TETHERING is enabled for this user."); 813 } 814 // null wifiConfig is a meaningful input for CMD_SET_AP 815 if (wifiConfig == null || isValid(wifiConfig)) { 816 mWifiController.sendMessage(CMD_SET_AP, enabled ? 1 : 0, 0, wifiConfig); 817 } else { 818 Slog.e(TAG, "Invalid WifiConfiguration"); 819 } 820 } 821 822 /** 823 * see {@link WifiManager#getWifiApState()} 824 * @return One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 825 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 826 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 827 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 828 * {@link WifiManager#WIFI_AP_STATE_FAILED} 829 */ 830 @Override 831 public int getWifiApEnabledState() { 832 enforceAccessPermission(); 833 mLog.trace("getWifiApEnabledState uid=%").c(Binder.getCallingUid()).flush(); 834 return mWifiStateMachine.syncGetWifiApState(); 835 } 836 837 /** 838 * see {@link android.net.wifi.WifiManager#updateInterfaceIpState(String, int)} 839 * 840 * The possible modes include: {@link WifiManager#IFACE_IP_MODE_TETHERED}, 841 * {@link WifiManager#IFACE_IP_MODE_LOCAL_ONLY}, 842 * {@link WifiManager#IFACE_IP_MODE_CONFIGURATION_ERROR} 843 * 844 * @param ifaceName String name of the updated interface 845 * @param mode new operating mode of the interface 846 * 847 * @throws SecurityException if the caller does not have permission to call update 848 */ 849 @Override 850 public void updateInterfaceIpState(String ifaceName, int mode) { 851 // NETWORK_STACK is a signature only permission. 852 enforceNetworkStackPermission(); 853 854 // hand off the work to our handler thread 855 mClientHandler.post(() -> { 856 updateInterfaceIpStateInternal(ifaceName, mode); 857 }); 858 } 859 860 private void updateInterfaceIpStateInternal(String ifaceName, int mode) { 861 // update interface IP state related to tethering and hotspot 862 synchronized (mLocalOnlyHotspotRequests) { 863 // update the mode tracker here - we clear out state below 864 Integer previousMode = WifiManager.IFACE_IP_MODE_UNSPECIFIED; 865 if (ifaceName != null) { 866 previousMode = mIfaceIpModes.put(ifaceName, mode); 867 } 868 Slog.d(TAG, "updateInterfaceIpState: ifaceName=" + ifaceName + " mode=" + mode 869 + " previous mode= " + previousMode); 870 871 switch (mode) { 872 case WifiManager.IFACE_IP_MODE_LOCAL_ONLY: 873 // first make sure we have registered requests.. otherwise clean up 874 if (mLocalOnlyHotspotRequests.isEmpty()) { 875 // we don't have requests... stop the hotspot 876 stopSoftAp(); 877 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 878 return; 879 } 880 // LOHS is ready to go! Call our registered requestors! 881 sendHotspotStartedMessageToAllLOHSRequestInfoEntriesLocked(); 882 break; 883 case WifiManager.IFACE_IP_MODE_TETHERED: 884 // we have tethered an interface. we don't really act on this now other than if 885 // we have LOHS requests, and this is an issue. return incompatible mode for 886 // onFailed for the registered requestors since this can result from a race 887 // between a tether request and a hotspot request (tethering wins). 888 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( 889 LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE); 890 mLocalOnlyHotspotRequests.clear(); 891 break; 892 case WifiManager.IFACE_IP_MODE_CONFIGURATION_ERROR: 893 // there was an error setting up the hotspot... trigger onFailed for the 894 // registered LOHS requestors 895 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( 896 LocalOnlyHotspotCallback.ERROR_GENERIC); 897 mLocalOnlyHotspotRequests.clear(); 898 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 899 break; 900 case WifiManager.IFACE_IP_MODE_UNSPECIFIED: 901 if (ifaceName == null) { 902 // interface name is null, this is due to softap teardown. clear all 903 // entries for now. 904 // TODO: Deal with individual interfaces when we receive updates for them 905 mIfaceIpModes.clear(); 906 return; 907 } 908 break; 909 default: 910 mLog.trace("updateInterfaceIpStateInternal: unknown mode %").c(mode).flush(); 911 } 912 } 913 } 914 915 /** 916 * see {@link android.net.wifi.WifiManager#startSoftAp(WifiConfiguration)} 917 * @param wifiConfig SSID, security and channel details as part of WifiConfiguration 918 * @return {@code true} if softap start was triggered 919 * @throws SecurityException if the caller does not have permission to start softap 920 */ 921 @Override 922 public boolean startSoftAp(WifiConfiguration wifiConfig) { 923 // NETWORK_STACK is a signature only permission. 924 enforceNetworkStackPermission(); 925 926 mLog.trace("startSoftAp uid=%").c(Binder.getCallingUid()).flush(); 927 928 // TODO: determine if we need to stop softap and clean up state if a tethering request comes 929 // from the user while we are just setting up. For now, the second CMD_START_AP will be 930 // ignored in WifiStateMachine. This will still bring up tethering and the registered LOHS 931 // requests will be cleared when we get the interface ip tethered status. 932 933 return startSoftApInternal(wifiConfig, STATE_TETHERED); 934 } 935 936 /** 937 * Internal method to start softap mode. Callers of this method should have already checked 938 * proper permissions beyond the NetworkStack permission. 939 */ 940 private boolean startSoftApInternal(WifiConfiguration wifiConfig, int mode) { 941 mLog.trace("startSoftApInternal uid=% mode=%") 942 .c(Binder.getCallingUid()).c(mode).flush(); 943 944 // null wifiConfig is a meaningful input for CMD_SET_AP 945 if (wifiConfig == null || isValid(wifiConfig)) { 946 // TODO: need a way to set the mode 947 mWifiController.sendMessage(CMD_SET_AP, 1, 0, wifiConfig); 948 return true; 949 } 950 Slog.e(TAG, "Invalid WifiConfiguration"); 951 return false; 952 } 953 954 /** 955 * see {@link android.net.wifi.WifiManager#stopSoftAp()} 956 * @return {@code true} if softap stop was triggered 957 * @throws SecurityException if the caller does not have permission to stop softap 958 */ 959 @Override 960 public boolean stopSoftAp() { 961 // NETWORK_STACK is a signature only permission. 962 enforceNetworkStackPermission(); 963 964 mLog.trace("stopSoftAp uid=%").c(Binder.getCallingUid()).flush(); 965 966 // add checks here to make sure this is the proper caller - apps can't disable tethering or 967 // instances of local only hotspot that they didn't start. return false for those cases 968 969 return stopSoftApInternal(); 970 } 971 972 /** 973 * Internal method to stop softap mode. Callers of this method should have already checked 974 * proper permissions beyond the NetworkStack permission. 975 */ 976 private boolean stopSoftApInternal() { 977 mLog.trace("stopSoftApInternal uid=%").c(Binder.getCallingUid()).flush(); 978 979 // we have an allowed caller - clear local only hotspot if it was enabled 980 synchronized (mLocalOnlyHotspotRequests) { 981 mLocalOnlyHotspotRequests.clear(); 982 mLocalOnlyHotspotConfig = null; 983 } 984 mWifiController.sendMessage(CMD_SET_AP, 0, 0); 985 return true; 986 } 987 988 /** 989 * Private method to handle SoftAp state changes 990 */ 991 private void handleWifiApStateChange(int currentState, int previousState, int errorCode) { 992 // The AP state update from WifiStateMachine for softap 993 Slog.d(TAG, "handleWifiApStateChange: currentState=" + currentState 994 + " previousState=" + previousState + " errorCode= " + errorCode); 995 996 // check if we have a failure - since it is possible (worst case scenario where 997 // WifiController and WifiStateMachine are out of sync wrt modes) to get two FAILED 998 // notifications in a row, we need to handle this first. 999 if (currentState == WIFI_AP_STATE_FAILED) { 1000 // update registered LOHS callbacks if we see a failure 1001 synchronized (mLocalOnlyHotspotRequests) { 1002 int errorToReport = ERROR_GENERIC; 1003 if (errorCode == SAP_START_FAILURE_NO_CHANNEL) { 1004 errorToReport = ERROR_NO_CHANNEL; 1005 } 1006 // holding the required lock: send message to requestors and clear the list 1007 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( 1008 errorToReport); 1009 // also need to clear interface ip state - send null for now since we don't know 1010 // what interface (and we have one anyway) 1011 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 1012 } 1013 return; 1014 } 1015 1016 if (currentState == WIFI_AP_STATE_DISABLING || currentState == WIFI_AP_STATE_DISABLED) { 1017 // softap is shutting down or is down... let requestors know via the onStopped call 1018 synchronized (mLocalOnlyHotspotRequests) { 1019 // if we are currently in hotspot mode, then trigger onStopped for registered 1020 // requestors, otherwise something odd happened and we should clear state 1021 if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_LOCAL_ONLY)) { 1022 // holding the required lock: send message to requestors and clear the list 1023 sendHotspotStoppedMessageToAllLOHSRequestInfoEntriesLocked(); 1024 } else { 1025 // LOHS not active: report an error (still holding the required lock) 1026 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked(ERROR_GENERIC); 1027 } 1028 // also clear interface ip state - send null for now since we don't know what 1029 // interface (and we only have one anyway) 1030 updateInterfaceIpState(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 1031 } 1032 return; 1033 } 1034 1035 // remaining states are enabling or enabled... those are not used for the callbacks 1036 } 1037 1038 /** 1039 * Helper method to send a HOTSPOT_FAILED message to all registered LocalOnlyHotspotRequest 1040 * callers and clear the registrations. 1041 * 1042 * Callers should already hold the mLocalOnlyHotspotRequests lock. 1043 */ 1044 private void sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked(int arg1) { 1045 for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { 1046 try { 1047 requestor.sendHotspotFailedMessage(arg1); 1048 } catch (RemoteException e) { 1049 // This will be cleaned up by binder death handling 1050 } 1051 } 1052 1053 // Since all callers were notified, now clear the registrations. 1054 mLocalOnlyHotspotRequests.clear(); 1055 } 1056 1057 /** 1058 * Helper method to send a HOTSPOT_STOPPED message to all registered LocalOnlyHotspotRequest 1059 * callers and clear the registrations. 1060 * 1061 * Callers should already hold the mLocalOnlyHotspotRequests lock. 1062 */ 1063 private void sendHotspotStoppedMessageToAllLOHSRequestInfoEntriesLocked() { 1064 for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { 1065 try { 1066 requestor.sendHotspotStoppedMessage(); 1067 } catch (RemoteException e) { 1068 // This will be cleaned up by binder death handling 1069 } 1070 } 1071 1072 // Since all callers were notified, now clear the registrations. 1073 mLocalOnlyHotspotRequests.clear(); 1074 } 1075 1076 /** 1077 * Helper method to send a HOTSPOT_STARTED message to all registered LocalOnlyHotspotRequest 1078 * callers. 1079 * 1080 * Callers should already hold the mLocalOnlyHotspotRequests lock. 1081 */ 1082 private void sendHotspotStartedMessageToAllLOHSRequestInfoEntriesLocked() { 1083 for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { 1084 try { 1085 requestor.sendHotspotStartedMessage(mLocalOnlyHotspotConfig); 1086 } catch (RemoteException e) { 1087 // This will be cleaned up by binder death handling 1088 } 1089 } 1090 } 1091 1092 /** 1093 * Temporary method used for testing while startLocalOnlyHotspot is not fully implemented. This 1094 * method allows unit tests to register callbacks directly for testing mechanisms triggered by 1095 * softap mode changes. 1096 */ 1097 @VisibleForTesting 1098 void registerLOHSForTest(int pid, LocalOnlyHotspotRequestInfo request) { 1099 mLocalOnlyHotspotRequests.put(pid, request); 1100 } 1101 1102 /** 1103 * Method to start LocalOnlyHotspot. In this method, permissions, settings and modes are 1104 * checked to verify that we can enter softapmode. This method returns 1105 * {@link LocalOnlyHotspotCallback#REQUEST_REGISTERED} if we will attempt to start, otherwise, 1106 * possible startup erros may include tethering being disallowed failure reason {@link 1107 * LocalOnlyHotspotCallback#ERROR_TETHERING_DISALLOWED} or an incompatible mode failure reason 1108 * {@link LocalOnlyHotspotCallback#ERROR_INCOMPATIBLE_MODE}. 1109 * 1110 * see {@link WifiManager#startLocalOnlyHotspot(LocalOnlyHotspotCallback)} 1111 * 1112 * @param messenger Messenger to send messages to the corresponding WifiManager. 1113 * @param binder IBinder instance to allow cleanup if the app dies 1114 * @param packageName String name of the calling package 1115 * 1116 * @return int return code for attempt to start LocalOnlyHotspot. 1117 * 1118 * @throws SecurityException if the caller does not have permission to start a Local Only 1119 * Hotspot. 1120 * @throws IllegalStateException if the caller attempts to start the LocalOnlyHotspot while they 1121 * have an outstanding request. 1122 */ 1123 @Override 1124 public int startLocalOnlyHotspot(Messenger messenger, IBinder binder, String packageName) { 1125 // first check if the caller has permission to start a local only hotspot 1126 // need to check for WIFI_STATE_CHANGE and location permission 1127 final int uid = Binder.getCallingUid(); 1128 final int pid = Binder.getCallingPid(); 1129 1130 enforceChangePermission(); 1131 enforceLocationPermission(packageName, uid); 1132 // also need to verify that Locations services are enabled. 1133 if (mSettingsStore.getLocationModeSetting(mContext) == Settings.Secure.LOCATION_MODE_OFF) { 1134 throw new SecurityException("Location mode is not enabled."); 1135 } 1136 1137 // verify that tethering is not disabled 1138 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 1139 return LocalOnlyHotspotCallback.ERROR_TETHERING_DISALLOWED; 1140 } 1141 1142 mLog.trace("startLocalOnlyHotspot uid=% pid=%").c(uid).c(pid).flush(); 1143 1144 synchronized (mLocalOnlyHotspotRequests) { 1145 // check if we are currently tethering 1146 if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_TETHERED)) { 1147 // Tethering is enabled, cannot start LocalOnlyHotspot 1148 mLog.trace("Cannot start localOnlyHotspot when WiFi Tethering is active."); 1149 return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE; 1150 } 1151 1152 // does this caller already have a request? 1153 LocalOnlyHotspotRequestInfo request = mLocalOnlyHotspotRequests.get(pid); 1154 if (request != null) { 1155 mLog.trace("caller already has an active request"); 1156 throw new IllegalStateException( 1157 "Caller already has an active LocalOnlyHotspot request"); 1158 } 1159 1160 // now create the new LOHS request info object 1161 request = new LocalOnlyHotspotRequestInfo(binder, messenger, 1162 new LocalOnlyRequestorCallback()); 1163 1164 // check current operating state and take action if needed 1165 if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_LOCAL_ONLY)) { 1166 // LOHS is already active, send out what is running 1167 try { 1168 mLog.trace("LOHS already up, trigger onStarted callback"); 1169 request.sendHotspotStartedMessage(mLocalOnlyHotspotConfig); 1170 } catch (RemoteException e) { 1171 return LocalOnlyHotspotCallback.ERROR_GENERIC; 1172 } 1173 } else if (mLocalOnlyHotspotRequests.isEmpty()) { 1174 // this is the first request, then set up our config and start LOHS 1175 mLocalOnlyHotspotConfig = 1176 WifiApConfigStore.generateLocalOnlyHotspotConfig(mContext); 1177 startSoftApInternal(mLocalOnlyHotspotConfig, STATE_LOCAL_ONLY); 1178 } 1179 1180 mLocalOnlyHotspotRequests.put(pid, request); 1181 return LocalOnlyHotspotCallback.REQUEST_REGISTERED; 1182 } 1183 } 1184 1185 /** 1186 * see {@link WifiManager#stopLocalOnlyHotspot()} 1187 * 1188 * @throws SecurityException if the caller does not have permission to stop a Local Only 1189 * Hotspot. 1190 */ 1191 @Override 1192 public void stopLocalOnlyHotspot() { 1193 // first check if the caller has permission to stop a local only hotspot 1194 enforceChangePermission(); 1195 final int uid = Binder.getCallingUid(); 1196 final int pid = Binder.getCallingPid(); 1197 1198 mLog.trace("stopLocalOnlyHotspot uid=% pid=%").c(uid).c(pid).flush(); 1199 1200 synchronized (mLocalOnlyHotspotRequests) { 1201 // was the caller already registered? check request tracker - return false if not 1202 LocalOnlyHotspotRequestInfo requestInfo = mLocalOnlyHotspotRequests.get(pid); 1203 if (requestInfo == null) { 1204 return; 1205 } 1206 requestInfo.unlinkDeathRecipient(); 1207 unregisterCallingAppAndStopLocalOnlyHotspot(requestInfo); 1208 } // end synchronized 1209 } 1210 1211 /** 1212 * Helper method to unregister LocalOnlyHotspot requestors and stop the hotspot if needed. 1213 */ 1214 private void unregisterCallingAppAndStopLocalOnlyHotspot(LocalOnlyHotspotRequestInfo request) { 1215 mLog.trace("unregisterCallingAppAndStopLocalOnlyHotspot pid=%").c(request.getPid()).flush(); 1216 1217 synchronized (mLocalOnlyHotspotRequests) { 1218 if (mLocalOnlyHotspotRequests.remove(request.getPid()) == null) { 1219 mLog.trace("LocalOnlyHotspotRequestInfo not found to remove"); 1220 return; 1221 } 1222 1223 if (mLocalOnlyHotspotRequests.isEmpty()) { 1224 mLocalOnlyHotspotConfig = null; 1225 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 1226 // if that was the last caller, then call stopSoftAp as WifiService 1227 long identity = Binder.clearCallingIdentity(); 1228 try { 1229 stopSoftApInternal(); 1230 } finally { 1231 Binder.restoreCallingIdentity(identity); 1232 } 1233 } 1234 } 1235 } 1236 1237 /** 1238 * see {@link WifiManager#watchLocalOnlyHotspot(LocalOnlyHotspotObserver)} 1239 * 1240 * This call requires the android.permission.NETWORK_SETTINGS permission. 1241 * 1242 * @param messenger Messenger to send messages to the corresponding WifiManager. 1243 * @param binder IBinder instance to allow cleanup if the app dies 1244 * 1245 * @throws SecurityException if the caller does not have permission to watch Local Only Hotspot 1246 * status updates. 1247 * @throws IllegalStateException if the caller attempts to watch LocalOnlyHotspot updates with 1248 * an existing subscription. 1249 */ 1250 @Override 1251 public void startWatchLocalOnlyHotspot(Messenger messenger, IBinder binder) { 1252 final String packageName = mContext.getOpPackageName(); 1253 1254 // NETWORK_SETTINGS is a signature only permission. 1255 enforceNetworkSettingsPermission(); 1256 1257 throw new UnsupportedOperationException("LocalOnlyHotspot is still in development"); 1258 } 1259 1260 /** 1261 * see {@link WifiManager#unregisterLocalOnlyHotspotObserver()} 1262 */ 1263 @Override 1264 public void stopWatchLocalOnlyHotspot() { 1265 // NETWORK_STACK is a signature only permission. 1266 enforceNetworkSettingsPermission(); 1267 throw new UnsupportedOperationException("LocalOnlyHotspot is still in development"); 1268 } 1269 1270 /** 1271 * see {@link WifiManager#getWifiApConfiguration()} 1272 * @return soft access point configuration 1273 * @throws SecurityException if the caller does not have permission to retrieve the softap 1274 * config 1275 */ 1276 @Override 1277 public WifiConfiguration getWifiApConfiguration() { 1278 enforceAccessPermission(); 1279 int uid = Binder.getCallingUid(); 1280 // only allow Settings UI to get the saved SoftApConfig 1281 if (!mWifiPermissionsUtil.checkConfigOverridePermission(uid)) { 1282 // random apps should not be allowed to read the user specified config 1283 throw new SecurityException("App not allowed to read or update stored WiFi Ap config " 1284 + "(uid = " + uid + ")"); 1285 } 1286 mLog.trace("getWifiApConfiguration uid=%").c(uid).flush(); 1287 return mWifiStateMachine.syncGetWifiApConfiguration(); 1288 } 1289 1290 /** 1291 * see {@link WifiManager#setWifiApConfiguration(WifiConfiguration)} 1292 * @param wifiConfig WifiConfiguration details for soft access point 1293 * @throws SecurityException if the caller does not have permission to write the sotap config 1294 */ 1295 @Override 1296 public void setWifiApConfiguration(WifiConfiguration wifiConfig) { 1297 enforceChangePermission(); 1298 int uid = Binder.getCallingUid(); 1299 // only allow Settings UI to write the stored SoftApConfig 1300 if (!mWifiPermissionsUtil.checkConfigOverridePermission(uid)) { 1301 // random apps should not be allowed to read the user specified config 1302 throw new SecurityException("App not allowed to read or update stored WiFi AP config " 1303 + "(uid = " + uid + ")"); 1304 } 1305 mLog.trace("setWifiApConfiguration uid=%").c(uid).flush(); 1306 if (wifiConfig == null) 1307 return; 1308 if (isValid(wifiConfig)) { 1309 mWifiStateMachine.setWifiApConfiguration(wifiConfig); 1310 } else { 1311 Slog.e(TAG, "Invalid WifiConfiguration"); 1312 } 1313 } 1314 1315 /** 1316 * see {@link android.net.wifi.WifiManager#isScanAlwaysAvailable()} 1317 */ 1318 @Override 1319 public boolean isScanAlwaysAvailable() { 1320 enforceAccessPermission(); 1321 mLog.trace("isScanAlwaysAvailable uid=%").c(Binder.getCallingUid()).flush(); 1322 return mSettingsStore.isScanAlwaysAvailable(); 1323 } 1324 1325 /** 1326 * see {@link android.net.wifi.WifiManager#disconnect()} 1327 */ 1328 @Override 1329 public void disconnect() { 1330 enforceChangePermission(); 1331 mLog.trace("disconnect uid=%").c(Binder.getCallingUid()).flush(); 1332 mWifiStateMachine.disconnectCommand(); 1333 } 1334 1335 /** 1336 * see {@link android.net.wifi.WifiManager#reconnect()} 1337 */ 1338 @Override 1339 public void reconnect() { 1340 enforceChangePermission(); 1341 mLog.trace("reconnect uid=%").c(Binder.getCallingUid()).flush(); 1342 mWifiStateMachine.reconnectCommand(); 1343 } 1344 1345 /** 1346 * see {@link android.net.wifi.WifiManager#reassociate()} 1347 */ 1348 @Override 1349 public void reassociate() { 1350 enforceChangePermission(); 1351 mLog.trace("reassociate uid=%").c(Binder.getCallingUid()).flush(); 1352 mWifiStateMachine.reassociateCommand(); 1353 } 1354 1355 /** 1356 * see {@link android.net.wifi.WifiManager#getSupportedFeatures} 1357 */ 1358 @Override 1359 public int getSupportedFeatures() { 1360 enforceAccessPermission(); 1361 mLog.trace("getSupportedFeatures uid=%").c(Binder.getCallingUid()).flush(); 1362 if (mWifiStateMachineChannel != null) { 1363 return mWifiStateMachine.syncGetSupportedFeatures(mWifiStateMachineChannel); 1364 } else { 1365 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1366 return 0; 1367 } 1368 } 1369 1370 @Override 1371 public void requestActivityInfo(ResultReceiver result) { 1372 Bundle bundle = new Bundle(); 1373 mLog.trace("requestActivityInfo uid=%").c(Binder.getCallingUid()).flush(); 1374 bundle.putParcelable(BatteryStats.RESULT_RECEIVER_CONTROLLER_KEY, reportActivityInfo()); 1375 result.send(0, bundle); 1376 } 1377 1378 /** 1379 * see {@link android.net.wifi.WifiManager#getControllerActivityEnergyInfo(int)} 1380 */ 1381 @Override 1382 public WifiActivityEnergyInfo reportActivityInfo() { 1383 enforceAccessPermission(); 1384 mLog.trace("reportActivityInfo uid=%").c(Binder.getCallingUid()).flush(); 1385 if ((getSupportedFeatures() & WifiManager.WIFI_FEATURE_LINK_LAYER_STATS) == 0) { 1386 return null; 1387 } 1388 WifiLinkLayerStats stats; 1389 WifiActivityEnergyInfo energyInfo = null; 1390 if (mWifiStateMachineChannel != null) { 1391 stats = mWifiStateMachine.syncGetLinkLayerStats(mWifiStateMachineChannel); 1392 if (stats != null) { 1393 final long rxIdleCurrent = mContext.getResources().getInteger( 1394 com.android.internal.R.integer.config_wifi_idle_receive_cur_ma); 1395 final long rxCurrent = mContext.getResources().getInteger( 1396 com.android.internal.R.integer.config_wifi_active_rx_cur_ma); 1397 final long txCurrent = mContext.getResources().getInteger( 1398 com.android.internal.R.integer.config_wifi_tx_cur_ma); 1399 final double voltage = mContext.getResources().getInteger( 1400 com.android.internal.R.integer.config_wifi_operating_voltage_mv) 1401 / 1000.0; 1402 1403 final long rxIdleTime = stats.on_time - stats.tx_time - stats.rx_time; 1404 final long[] txTimePerLevel; 1405 if (stats.tx_time_per_level != null) { 1406 txTimePerLevel = new long[stats.tx_time_per_level.length]; 1407 for (int i = 0; i < txTimePerLevel.length; i++) { 1408 txTimePerLevel[i] = stats.tx_time_per_level[i]; 1409 // TODO(b/27227497): Need to read the power consumed per level from config 1410 } 1411 } else { 1412 // This will happen if the HAL get link layer API returned null. 1413 txTimePerLevel = new long[0]; 1414 } 1415 final long energyUsed = (long)((stats.tx_time * txCurrent + 1416 stats.rx_time * rxCurrent + 1417 rxIdleTime * rxIdleCurrent) * voltage); 1418 if (VDBG || rxIdleTime < 0 || stats.on_time < 0 || stats.tx_time < 0 || 1419 stats.rx_time < 0 || energyUsed < 0) { 1420 StringBuilder sb = new StringBuilder(); 1421 sb.append(" rxIdleCur=" + rxIdleCurrent); 1422 sb.append(" rxCur=" + rxCurrent); 1423 sb.append(" txCur=" + txCurrent); 1424 sb.append(" voltage=" + voltage); 1425 sb.append(" on_time=" + stats.on_time); 1426 sb.append(" tx_time=" + stats.tx_time); 1427 sb.append(" tx_time_per_level=" + Arrays.toString(txTimePerLevel)); 1428 sb.append(" rx_time=" + stats.rx_time); 1429 sb.append(" rxIdleTime=" + rxIdleTime); 1430 sb.append(" energy=" + energyUsed); 1431 Log.d(TAG, " reportActivityInfo: " + sb.toString()); 1432 } 1433 1434 // Convert the LinkLayerStats into EnergyActivity 1435 energyInfo = new WifiActivityEnergyInfo(mClock.getElapsedSinceBootMillis(), 1436 WifiActivityEnergyInfo.STACK_STATE_STATE_IDLE, stats.tx_time, 1437 txTimePerLevel, stats.rx_time, rxIdleTime, energyUsed); 1438 } 1439 if (energyInfo != null && energyInfo.isValid()) { 1440 return energyInfo; 1441 } else { 1442 return null; 1443 } 1444 } else { 1445 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1446 return null; 1447 } 1448 } 1449 1450 /** 1451 * see {@link android.net.wifi.WifiManager#getConfiguredNetworks()} 1452 * @return the list of configured networks 1453 */ 1454 @Override 1455 public ParceledListSlice<WifiConfiguration> getConfiguredNetworks() { 1456 enforceAccessPermission(); 1457 mLog.trace("getConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush(); 1458 if (mWifiStateMachineChannel != null) { 1459 List<WifiConfiguration> configs = mWifiStateMachine.syncGetConfiguredNetworks( 1460 Binder.getCallingUid(), mWifiStateMachineChannel); 1461 if (configs != null) { 1462 return new ParceledListSlice<WifiConfiguration>(configs); 1463 } 1464 } else { 1465 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1466 } 1467 return null; 1468 } 1469 1470 /** 1471 * see {@link android.net.wifi.WifiManager#getPrivilegedConfiguredNetworks()} 1472 * @return the list of configured networks with real preSharedKey 1473 */ 1474 @Override 1475 public ParceledListSlice<WifiConfiguration> getPrivilegedConfiguredNetworks() { 1476 enforceReadCredentialPermission(); 1477 enforceAccessPermission(); 1478 mLog.trace("getPrivilegedConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush(); 1479 if (mWifiStateMachineChannel != null) { 1480 List<WifiConfiguration> configs = 1481 mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel); 1482 if (configs != null) { 1483 return new ParceledListSlice<WifiConfiguration>(configs); 1484 } 1485 } else { 1486 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1487 } 1488 return null; 1489 } 1490 1491 /** 1492 * Returns a WifiConfiguration for a Passpoint network matching this ScanResult. 1493 * 1494 * @param scanResult scanResult that represents the BSSID 1495 * @return {@link WifiConfiguration} that matches this BSSID or null 1496 */ 1497 @Override 1498 public WifiConfiguration getMatchingWifiConfig(ScanResult scanResult) { 1499 enforceAccessPermission(); 1500 mLog.trace("getMatchingWifiConfig uid=%").c(Binder.getCallingUid()).flush(); 1501 if (!mContext.getPackageManager().hasSystemFeature( 1502 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1503 throw new UnsupportedOperationException("Passpoint not enabled"); 1504 } 1505 return mWifiStateMachine.syncGetMatchingWifiConfig(scanResult, mWifiStateMachineChannel); 1506 } 1507 1508 /** 1509 * see {@link android.net.wifi.WifiManager#addOrUpdateNetwork(WifiConfiguration)} 1510 * @return the supplicant-assigned identifier for the new or updated 1511 * network if the operation succeeds, or {@code -1} if it fails 1512 */ 1513 @Override 1514 public int addOrUpdateNetwork(WifiConfiguration config) { 1515 enforceChangePermission(); 1516 mLog.trace("addOrUpdateNetwork uid=%").c(Binder.getCallingUid()).flush(); 1517 1518 // Previously, this API is overloaded for installing Passpoint profiles. Now 1519 // that we have a dedicated API for doing it, redirect the call to the dedicated API. 1520 if (config.isPasspoint()) { 1521 PasspointConfiguration passpointConfig = 1522 PasspointProvider.convertFromWifiConfig(config); 1523 if (passpointConfig.getCredential() == null) { 1524 Slog.e(TAG, "Missing credential for Passpoint profile"); 1525 return -1; 1526 } 1527 // Copy over certificates and keys. 1528 passpointConfig.getCredential().setCaCertificate( 1529 config.enterpriseConfig.getCaCertificate()); 1530 passpointConfig.getCredential().setClientCertificateChain( 1531 config.enterpriseConfig.getClientCertificateChain()); 1532 passpointConfig.getCredential().setClientPrivateKey( 1533 config.enterpriseConfig.getClientPrivateKey()); 1534 if (!addOrUpdatePasspointConfiguration(passpointConfig)) { 1535 Slog.e(TAG, "Failed to add Passpoint profile"); 1536 return -1; 1537 } 1538 // There is no network ID associated with a Passpoint profile. 1539 return 0; 1540 } 1541 1542 if (isValid(config)) { 1543 //TODO: pass the Uid the WifiStateMachine as a message parameter 1544 Slog.i("addOrUpdateNetwork", " uid = " + Integer.toString(Binder.getCallingUid()) 1545 + " SSID " + config.SSID 1546 + " nid=" + Integer.toString(config.networkId)); 1547 if (config.networkId == WifiConfiguration.INVALID_NETWORK_ID) { 1548 config.creatorUid = Binder.getCallingUid(); 1549 } else { 1550 config.lastUpdateUid = Binder.getCallingUid(); 1551 } 1552 if (mWifiStateMachineChannel != null) { 1553 return mWifiStateMachine.syncAddOrUpdateNetwork(mWifiStateMachineChannel, config); 1554 } else { 1555 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1556 return -1; 1557 } 1558 } else { 1559 Slog.e(TAG, "bad network configuration"); 1560 return -1; 1561 } 1562 } 1563 1564 public static void verifyCert(X509Certificate caCert) 1565 throws GeneralSecurityException, IOException { 1566 CertificateFactory factory = CertificateFactory.getInstance("X.509"); 1567 CertPathValidator validator = 1568 CertPathValidator.getInstance(CertPathValidator.getDefaultType()); 1569 CertPath path = factory.generateCertPath( 1570 Arrays.asList(caCert)); 1571 KeyStore ks = KeyStore.getInstance("AndroidCAStore"); 1572 ks.load(null, null); 1573 PKIXParameters params = new PKIXParameters(ks); 1574 params.setRevocationEnabled(false); 1575 validator.validate(path, params); 1576 } 1577 1578 /** 1579 * See {@link android.net.wifi.WifiManager#removeNetwork(int)} 1580 * @param netId the integer that identifies the network configuration 1581 * to the supplicant 1582 * @return {@code true} if the operation succeeded 1583 */ 1584 @Override 1585 public boolean removeNetwork(int netId) { 1586 enforceChangePermission(); 1587 mLog.trace("removeNetwork uid=%").c(Binder.getCallingUid()).flush(); 1588 // TODO Add private logging for netId b/33807876 1589 if (mWifiStateMachineChannel != null) { 1590 return mWifiStateMachine.syncRemoveNetwork(mWifiStateMachineChannel, netId); 1591 } else { 1592 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1593 return false; 1594 } 1595 } 1596 1597 /** 1598 * See {@link android.net.wifi.WifiManager#enableNetwork(int, boolean)} 1599 * @param netId the integer that identifies the network configuration 1600 * to the supplicant 1601 * @param disableOthers if true, disable all other networks. 1602 * @return {@code true} if the operation succeeded 1603 */ 1604 @Override 1605 public boolean enableNetwork(int netId, boolean disableOthers) { 1606 enforceChangePermission(); 1607 // TODO b/33807876 Log netId 1608 mLog.trace("enableNetwork uid=% disableOthers=%") 1609 .c(Binder.getCallingUid()) 1610 .c(disableOthers).flush(); 1611 1612 if (mWifiStateMachineChannel != null) { 1613 return mWifiStateMachine.syncEnableNetwork(mWifiStateMachineChannel, netId, 1614 disableOthers); 1615 } else { 1616 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1617 return false; 1618 } 1619 } 1620 1621 /** 1622 * See {@link android.net.wifi.WifiManager#disableNetwork(int)} 1623 * @param netId the integer that identifies the network configuration 1624 * to the supplicant 1625 * @return {@code true} if the operation succeeded 1626 */ 1627 @Override 1628 public boolean disableNetwork(int netId) { 1629 enforceChangePermission(); 1630 // TODO b/33807876 Log netId 1631 mLog.trace("disableNetwork uid=%").c(Binder.getCallingUid()).flush(); 1632 1633 if (mWifiStateMachineChannel != null) { 1634 return mWifiStateMachine.syncDisableNetwork(mWifiStateMachineChannel, netId); 1635 } else { 1636 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1637 return false; 1638 } 1639 } 1640 1641 /** 1642 * See {@link android.net.wifi.WifiManager#getConnectionInfo()} 1643 * @return the Wi-Fi information, contained in {@link WifiInfo}. 1644 */ 1645 @Override 1646 public WifiInfo getConnectionInfo() { 1647 enforceAccessPermission(); 1648 mLog.trace("getConnectionInfo uid=%").c(Binder.getCallingUid()).flush(); 1649 /* 1650 * Make sure we have the latest information, by sending 1651 * a status request to the supplicant. 1652 */ 1653 return mWifiStateMachine.syncRequestConnectionInfo(); 1654 } 1655 1656 /** 1657 * Return the results of the most recent access point scan, in the form of 1658 * a list of {@link ScanResult} objects. 1659 * @return the list of results 1660 */ 1661 @Override 1662 public List<ScanResult> getScanResults(String callingPackage) { 1663 enforceAccessPermission(); 1664 int uid = Binder.getCallingUid(); 1665 long ident = Binder.clearCallingIdentity(); 1666 try { 1667 if (!mWifiPermissionsUtil.canAccessScanResults(callingPackage, 1668 uid, Build.VERSION_CODES.M)) { 1669 return new ArrayList<ScanResult>(); 1670 } 1671 if (mWifiScanner == null) { 1672 mWifiScanner = mWifiInjector.getWifiScanner(); 1673 } 1674 return mWifiScanner.getSingleScanResults(); 1675 } finally { 1676 Binder.restoreCallingIdentity(ident); 1677 } 1678 } 1679 1680 /** 1681 * Add or update a Passpoint configuration. 1682 * 1683 * @param config The Passpoint configuration to be added 1684 * @return true on success or false on failure 1685 */ 1686 @Override 1687 public boolean addOrUpdatePasspointConfiguration(PasspointConfiguration config) { 1688 enforceChangePermission(); 1689 mLog.trace("addorUpdatePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush(); 1690 if (!mContext.getPackageManager().hasSystemFeature( 1691 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1692 throw new UnsupportedOperationException("Passpoint not enabled"); 1693 } 1694 return mWifiStateMachine.syncAddOrUpdatePasspointConfig(mWifiStateMachineChannel, config, 1695 Binder.getCallingUid()); 1696 } 1697 1698 /** 1699 * Remove the Passpoint configuration identified by its FQDN (Fully Qualified Domain Name). 1700 * 1701 * @param fqdn The FQDN of the Passpoint configuration to be removed 1702 * @return true on success or false on failure 1703 */ 1704 @Override 1705 public boolean removePasspointConfiguration(String fqdn) { 1706 enforceChangePermission(); 1707 mLog.trace("removePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush(); 1708 if (!mContext.getPackageManager().hasSystemFeature( 1709 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1710 throw new UnsupportedOperationException("Passpoint not enabled"); 1711 } 1712 return mWifiStateMachine.syncRemovePasspointConfig(mWifiStateMachineChannel, fqdn); 1713 } 1714 1715 /** 1716 * Return the list of the installed Passpoint configurations. 1717 * 1718 * An empty list will be returned when no configuration is installed. 1719 * 1720 * @return A list of {@link PasspointConfiguration} 1721 */ 1722 @Override 1723 public List<PasspointConfiguration> getPasspointConfigurations() { 1724 enforceAccessPermission(); 1725 mLog.trace("getPasspointConfigurations uid=%").c(Binder.getCallingUid()).flush(); 1726 if (!mContext.getPackageManager().hasSystemFeature( 1727 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1728 throw new UnsupportedOperationException("Passpoint not enabled"); 1729 } 1730 return mWifiStateMachine.syncGetPasspointConfigs(mWifiStateMachineChannel); 1731 } 1732 1733 /** 1734 * Query for a Hotspot 2.0 release 2 OSU icon 1735 * @param bssid The BSSID of the AP 1736 * @param fileName Icon file name 1737 */ 1738 @Override 1739 public void queryPasspointIcon(long bssid, String fileName) { 1740 enforceAccessPermission(); 1741 mLog.trace("queryPasspointIcon uid=%").c(Binder.getCallingUid()).flush(); 1742 if (!mContext.getPackageManager().hasSystemFeature( 1743 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1744 throw new UnsupportedOperationException("Passpoint not enabled"); 1745 } 1746 mWifiStateMachine.syncQueryPasspointIcon(mWifiStateMachineChannel, bssid, fileName); 1747 } 1748 1749 /** 1750 * Match the currently associated network against the SP matching the given FQDN 1751 * @param fqdn FQDN of the SP 1752 * @return ordinal [HomeProvider, RoamingProvider, Incomplete, None, Declined] 1753 */ 1754 @Override 1755 public int matchProviderWithCurrentNetwork(String fqdn) { 1756 mLog.trace("matchProviderWithCurrentNetwork uid=%").c(Binder.getCallingUid()).flush(); 1757 return mWifiStateMachine.matchProviderWithCurrentNetwork(mWifiStateMachineChannel, fqdn); 1758 } 1759 1760 /** 1761 * Deauthenticate and set the re-authentication hold off time for the current network 1762 * @param holdoff hold off time in milliseconds 1763 * @param ess set if the hold off pertains to an ESS rather than a BSS 1764 */ 1765 @Override 1766 public void deauthenticateNetwork(long holdoff, boolean ess) { 1767 mLog.trace("deauthenticateNetwork uid=%").c(Binder.getCallingUid()).flush(); 1768 mWifiStateMachine.deauthenticateNetwork(mWifiStateMachineChannel, holdoff, ess); 1769 } 1770 1771 /** 1772 * Tell the supplicant to persist the current list of configured networks. 1773 * @return {@code true} if the operation succeeded 1774 * 1775 * TODO: deprecate this 1776 */ 1777 @Override 1778 public boolean saveConfiguration() { 1779 enforceChangePermission(); 1780 mLog.trace("saveConfiguration uid=%").c(Binder.getCallingUid()).flush(); 1781 if (mWifiStateMachineChannel != null) { 1782 return mWifiStateMachine.syncSaveConfig(mWifiStateMachineChannel); 1783 } else { 1784 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1785 return false; 1786 } 1787 } 1788 1789 /** 1790 * Set the country code 1791 * @param countryCode ISO 3166 country code. 1792 * @param persist {@code true} if the setting should be remembered. 1793 * 1794 * The persist behavior exists so that wifi can fall back to the last 1795 * persisted country code on a restart, when the locale information is 1796 * not available from telephony. 1797 */ 1798 @Override 1799 public void setCountryCode(String countryCode, boolean persist) { 1800 Slog.i(TAG, "WifiService trying to set country code to " + countryCode + 1801 " with persist set to " + persist); 1802 enforceConnectivityInternalPermission(); 1803 mLog.trace("setCountryCode uid=%").c(Binder.getCallingUid()).flush(); 1804 final long token = Binder.clearCallingIdentity(); 1805 mCountryCode.setCountryCode(countryCode); 1806 Binder.restoreCallingIdentity(token); 1807 } 1808 1809 /** 1810 * Get the country code 1811 * @return Get the best choice country code for wifi, regardless of if it was set or 1812 * not. 1813 * Returns null when there is no country code available. 1814 */ 1815 @Override 1816 public String getCountryCode() { 1817 enforceConnectivityInternalPermission(); 1818 mLog.trace("getCountryCode uid=%").c(Binder.getCallingUid()).flush(); 1819 String country = mCountryCode.getCountryCode(); 1820 return country; 1821 } 1822 1823 @Override 1824 public boolean isDualBandSupported() { 1825 //TODO: Should move towards adding a driver API that checks at runtime 1826 mLog.trace("isDualBandSupported uid=%").c(Binder.getCallingUid()).flush(); 1827 return mContext.getResources().getBoolean( 1828 com.android.internal.R.bool.config_wifi_dual_band_support); 1829 } 1830 1831 /** 1832 * Return the DHCP-assigned addresses from the last successful DHCP request, 1833 * if any. 1834 * @return the DHCP information 1835 * @deprecated 1836 */ 1837 @Override 1838 @Deprecated 1839 public DhcpInfo getDhcpInfo() { 1840 enforceAccessPermission(); 1841 mLog.trace("getDhcpInfo uid=%").c(Binder.getCallingUid()).flush(); 1842 DhcpResults dhcpResults = mWifiStateMachine.syncGetDhcpResults(); 1843 1844 DhcpInfo info = new DhcpInfo(); 1845 1846 if (dhcpResults.ipAddress != null && 1847 dhcpResults.ipAddress.getAddress() instanceof Inet4Address) { 1848 info.ipAddress = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.ipAddress.getAddress()); 1849 } 1850 1851 if (dhcpResults.gateway != null) { 1852 info.gateway = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.gateway); 1853 } 1854 1855 int dnsFound = 0; 1856 for (InetAddress dns : dhcpResults.dnsServers) { 1857 if (dns instanceof Inet4Address) { 1858 if (dnsFound == 0) { 1859 info.dns1 = NetworkUtils.inetAddressToInt((Inet4Address)dns); 1860 } else { 1861 info.dns2 = NetworkUtils.inetAddressToInt((Inet4Address)dns); 1862 } 1863 if (++dnsFound > 1) break; 1864 } 1865 } 1866 Inet4Address serverAddress = dhcpResults.serverAddress; 1867 if (serverAddress != null) { 1868 info.serverAddress = NetworkUtils.inetAddressToInt(serverAddress); 1869 } 1870 info.leaseDuration = dhcpResults.leaseDuration; 1871 1872 return info; 1873 } 1874 1875 /** 1876 * enable TDLS for the local NIC to remote NIC 1877 * The APPs don't know the remote MAC address to identify NIC though, 1878 * so we need to do additional work to find it from remote IP address 1879 */ 1880 1881 class TdlsTaskParams { 1882 public String remoteIpAddress; 1883 public boolean enable; 1884 } 1885 1886 class TdlsTask extends AsyncTask<TdlsTaskParams, Integer, Integer> { 1887 @Override 1888 protected Integer doInBackground(TdlsTaskParams... params) { 1889 1890 // Retrieve parameters for the call 1891 TdlsTaskParams param = params[0]; 1892 String remoteIpAddress = param.remoteIpAddress.trim(); 1893 boolean enable = param.enable; 1894 1895 // Get MAC address of Remote IP 1896 String macAddress = null; 1897 1898 BufferedReader reader = null; 1899 1900 try { 1901 reader = new BufferedReader(new FileReader("/proc/net/arp")); 1902 1903 // Skip over the line bearing colum titles 1904 String line = reader.readLine(); 1905 1906 while ((line = reader.readLine()) != null) { 1907 String[] tokens = line.split("[ ]+"); 1908 if (tokens.length < 6) { 1909 continue; 1910 } 1911 1912 // ARP column format is 1913 // Address HWType HWAddress Flags Mask IFace 1914 String ip = tokens[0]; 1915 String mac = tokens[3]; 1916 1917 if (remoteIpAddress.equals(ip)) { 1918 macAddress = mac; 1919 break; 1920 } 1921 } 1922 1923 if (macAddress == null) { 1924 Slog.w(TAG, "Did not find remoteAddress {" + remoteIpAddress + "} in " + 1925 "/proc/net/arp"); 1926 } else { 1927 enableTdlsWithMacAddress(macAddress, enable); 1928 } 1929 1930 } catch (FileNotFoundException e) { 1931 Slog.e(TAG, "Could not open /proc/net/arp to lookup mac address"); 1932 } catch (IOException e) { 1933 Slog.e(TAG, "Could not read /proc/net/arp to lookup mac address"); 1934 } finally { 1935 try { 1936 if (reader != null) { 1937 reader.close(); 1938 } 1939 } 1940 catch (IOException e) { 1941 // Do nothing 1942 } 1943 } 1944 1945 return 0; 1946 } 1947 } 1948 1949 @Override 1950 public void enableTdls(String remoteAddress, boolean enable) { 1951 if (remoteAddress == null) { 1952 throw new IllegalArgumentException("remoteAddress cannot be null"); 1953 } 1954 mLog.trace("enableTdls uid=% enable=%").c(Binder.getCallingUid()).c(enable).flush(); 1955 TdlsTaskParams params = new TdlsTaskParams(); 1956 params.remoteIpAddress = remoteAddress; 1957 params.enable = enable; 1958 new TdlsTask().execute(params); 1959 } 1960 1961 1962 @Override 1963 public void enableTdlsWithMacAddress(String remoteMacAddress, boolean enable) { 1964 mLog.trace("enableTdlsWithMacAddress uid=% enable=%") 1965 .c(Binder.getCallingUid()) 1966 .c(enable) 1967 .flush(); 1968 if (remoteMacAddress == null) { 1969 throw new IllegalArgumentException("remoteMacAddress cannot be null"); 1970 } 1971 1972 mWifiStateMachine.enableTdls(remoteMacAddress, enable); 1973 } 1974 1975 /** 1976 * Get a reference to handler. This is used by a client to establish 1977 * an AsyncChannel communication with WifiService 1978 */ 1979 @Override 1980 public Messenger getWifiServiceMessenger() { 1981 enforceAccessPermission(); 1982 enforceChangePermission(); 1983 mLog.trace("getWifiServiceMessenger uid=%").c(Binder.getCallingUid()).flush(); 1984 return new Messenger(mClientHandler); 1985 } 1986 1987 /** 1988 * Disable an ephemeral network, i.e. network that is created thru a WiFi Scorer 1989 */ 1990 @Override 1991 public void disableEphemeralNetwork(String SSID) { 1992 enforceAccessPermission(); 1993 enforceChangePermission(); 1994 mLog.trace("disableEphemeralNetwork uid=%").c(Binder.getCallingUid()).flush(); 1995 mWifiStateMachine.disableEphemeralNetwork(SSID); 1996 } 1997 1998 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 1999 @Override 2000 public void onReceive(Context context, Intent intent) { 2001 String action = intent.getAction(); 2002 if (action.equals(Intent.ACTION_SCREEN_ON)) { 2003 mWifiController.sendMessage(CMD_SCREEN_ON); 2004 } else if (action.equals(Intent.ACTION_USER_PRESENT)) { 2005 mWifiController.sendMessage(CMD_USER_PRESENT); 2006 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 2007 mWifiController.sendMessage(CMD_SCREEN_OFF); 2008 } else if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { 2009 int pluggedType = intent.getIntExtra("plugged", 0); 2010 mWifiController.sendMessage(CMD_BATTERY_CHANGED, pluggedType, 0, null); 2011 } else if (action.equals(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED)) { 2012 int state = intent.getIntExtra(BluetoothAdapter.EXTRA_CONNECTION_STATE, 2013 BluetoothAdapter.STATE_DISCONNECTED); 2014 mWifiStateMachine.sendBluetoothAdapterStateChange(state); 2015 } else if (action.equals(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED)) { 2016 boolean emergencyMode = intent.getBooleanExtra("phoneinECMState", false); 2017 mWifiController.sendMessage(CMD_EMERGENCY_MODE_CHANGED, emergencyMode ? 1 : 0, 0); 2018 } else if (action.equals(TelephonyIntents.ACTION_EMERGENCY_CALL_STATE_CHANGED)) { 2019 boolean inCall = intent.getBooleanExtra(PhoneConstants.PHONE_IN_EMERGENCY_CALL, false); 2020 mWifiController.sendMessage(CMD_EMERGENCY_CALL_STATE_CHANGED, inCall ? 1 : 0, 0); 2021 } else if (action.equals(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED)) { 2022 handleIdleModeChanged(); 2023 } 2024 } 2025 }; 2026 2027 private boolean startConsentUi(String packageName, 2028 int callingUid, String intentAction) throws RemoteException { 2029 if (UserHandle.getAppId(callingUid) == Process.SYSTEM_UID) { 2030 return false; 2031 } 2032 try { 2033 // Validate the package only if we are going to use it 2034 ApplicationInfo applicationInfo = mContext.getPackageManager() 2035 .getApplicationInfoAsUser(packageName, 2036 PackageManager.MATCH_DEBUG_TRIAGED_MISSING, 2037 UserHandle.getUserId(callingUid)); 2038 if (applicationInfo.uid != callingUid) { 2039 throw new SecurityException("Package " + callingUid 2040 + " not in uid " + callingUid); 2041 } 2042 2043 // Permission review mode, trigger a user prompt 2044 Intent intent = new Intent(intentAction); 2045 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK 2046 | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 2047 intent.putExtra(Intent.EXTRA_PACKAGE_NAME, packageName); 2048 mContext.startActivity(intent); 2049 return true; 2050 } catch (PackageManager.NameNotFoundException e) { 2051 throw new RemoteException(e.getMessage()); 2052 } 2053 } 2054 2055 /** 2056 * Observes settings changes to scan always mode. 2057 */ 2058 private void registerForScanModeChange() { 2059 ContentObserver contentObserver = new ContentObserver(null) { 2060 @Override 2061 public void onChange(boolean selfChange) { 2062 mSettingsStore.handleWifiScanAlwaysAvailableToggled(); 2063 mWifiController.sendMessage(CMD_SCAN_ALWAYS_MODE_CHANGED); 2064 } 2065 }; 2066 mFrameworkFacade.registerContentObserver(mContext, 2067 Settings.Global.getUriFor(Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE), 2068 false, contentObserver); 2069 2070 } 2071 2072 // Monitors settings changes related to background wifi scan throttling. 2073 private void registerForBackgroundThrottleChanges() { 2074 mFrameworkFacade.registerContentObserver( 2075 mContext, 2076 Settings.Global.getUriFor( 2077 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS), 2078 false, 2079 new ContentObserver(null) { 2080 @Override 2081 public void onChange(boolean selfChange) { 2082 updateBackgroundThrottleInterval(); 2083 } 2084 } 2085 ); 2086 mFrameworkFacade.registerContentObserver( 2087 mContext, 2088 Settings.Global.getUriFor( 2089 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_PACKAGE_WHITELIST), 2090 false, 2091 new ContentObserver(null) { 2092 @Override 2093 public void onChange(boolean selfChange) { 2094 updateBackgroundThrottlingWhitelist(); 2095 } 2096 } 2097 ); 2098 } 2099 2100 private void updateBackgroundThrottleInterval() { 2101 mBackgroundThrottleInterval = mFrameworkFacade.getLongSetting( 2102 mContext, 2103 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS, 2104 DEFAULT_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS); 2105 } 2106 2107 private void updateBackgroundThrottlingWhitelist() { 2108 String setting = mFrameworkFacade.getStringSetting( 2109 mContext, 2110 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_PACKAGE_WHITELIST); 2111 mBackgroundThrottlePackageWhitelist.clear(); 2112 if (setting != null) { 2113 mBackgroundThrottlePackageWhitelist.addAll(Arrays.asList(setting.split(","))); 2114 } 2115 } 2116 2117 private void registerForBroadcasts() { 2118 IntentFilter intentFilter = new IntentFilter(); 2119 intentFilter.addAction(Intent.ACTION_SCREEN_ON); 2120 intentFilter.addAction(Intent.ACTION_USER_PRESENT); 2121 intentFilter.addAction(Intent.ACTION_SCREEN_OFF); 2122 intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED); 2123 intentFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 2124 intentFilter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED); 2125 intentFilter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED); 2126 intentFilter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED); 2127 2128 boolean trackEmergencyCallState = mContext.getResources().getBoolean( 2129 com.android.internal.R.bool.config_wifi_turn_off_during_emergency_call); 2130 if (trackEmergencyCallState) { 2131 intentFilter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALL_STATE_CHANGED); 2132 } 2133 2134 mContext.registerReceiver(mReceiver, intentFilter); 2135 } 2136 2137 private void registerForPackageOrUserRemoval() { 2138 IntentFilter intentFilter = new IntentFilter(); 2139 intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); 2140 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 2141 mContext.registerReceiverAsUser(new BroadcastReceiver() { 2142 @Override 2143 public void onReceive(Context context, Intent intent) { 2144 switch (intent.getAction()) { 2145 case Intent.ACTION_PACKAGE_REMOVED: { 2146 if (intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) { 2147 return; 2148 } 2149 int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); 2150 Uri uri = intent.getData(); 2151 if (uid == -1 || uri == null) { 2152 return; 2153 } 2154 String pkgName = uri.getSchemeSpecificPart(); 2155 mWifiStateMachine.removeAppConfigs(pkgName, uid); 2156 break; 2157 } 2158 case Intent.ACTION_USER_REMOVED: { 2159 int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); 2160 mWifiStateMachine.removeUserConfigs(userHandle); 2161 break; 2162 } 2163 } 2164 } 2165 }, UserHandle.ALL, intentFilter, null, null); 2166 } 2167 2168 @Override 2169 public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err, 2170 String[] args, ShellCallback callback, ResultReceiver resultReceiver) { 2171 (new WifiShellCommand(mWifiStateMachine)).exec(this, in, out, err, args, callback, 2172 resultReceiver); 2173 } 2174 2175 @Override 2176 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2177 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2178 != PackageManager.PERMISSION_GRANTED) { 2179 pw.println("Permission Denial: can't dump WifiService from from pid=" 2180 + Binder.getCallingPid() 2181 + ", uid=" + Binder.getCallingUid()); 2182 return; 2183 } 2184 if (args != null && args.length > 0 && WifiMetrics.PROTO_DUMP_ARG.equals(args[0])) { 2185 // WifiMetrics proto bytes were requested. Dump only these. 2186 mWifiStateMachine.updateWifiMetrics(); 2187 mWifiMetrics.dump(fd, pw, args); 2188 } else if (args != null && args.length > 0 && IpManager.DUMP_ARG.equals(args[0])) { 2189 // IpManager dump was requested. Pass it along and take no further action. 2190 String[] ipManagerArgs = new String[args.length - 1]; 2191 System.arraycopy(args, 1, ipManagerArgs, 0, ipManagerArgs.length); 2192 mWifiStateMachine.dumpIpManager(fd, pw, ipManagerArgs); 2193 } else { 2194 pw.println("Wi-Fi is " + mWifiStateMachine.syncGetWifiStateByName()); 2195 pw.println("Stay-awake conditions: " + 2196 mFacade.getIntegerSetting(mContext, 2197 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 0)); 2198 pw.println("mInIdleMode " + mInIdleMode); 2199 pw.println("mScanPending " + mScanPending); 2200 mWifiController.dump(fd, pw, args); 2201 mSettingsStore.dump(fd, pw, args); 2202 mNotificationController.dump(fd, pw, args); 2203 mTrafficPoller.dump(fd, pw, args); 2204 pw.println(); 2205 pw.println("Locks held:"); 2206 mWifiLockManager.dump(pw); 2207 pw.println(); 2208 mWifiMulticastLockManager.dump(pw); 2209 pw.println(); 2210 mWifiStateMachine.dump(fd, pw, args); 2211 pw.println(); 2212 mWifiStateMachine.updateWifiMetrics(); 2213 mWifiMetrics.dump(fd, pw, args); 2214 pw.println(); 2215 mWifiBackupRestore.dump(fd, pw, args); 2216 pw.println(); 2217 } 2218 } 2219 2220 @Override 2221 public boolean acquireWifiLock(IBinder binder, int lockMode, String tag, WorkSource ws) { 2222 mLog.trace("acquireWifiLock uid=% lockMode=%") 2223 .c(Binder.getCallingUid()) 2224 .c(lockMode).flush(); 2225 if (mWifiLockManager.acquireWifiLock(lockMode, tag, binder, ws)) { 2226 mWifiController.sendMessage(CMD_LOCKS_CHANGED); 2227 return true; 2228 } 2229 return false; 2230 } 2231 2232 @Override 2233 public void updateWifiLockWorkSource(IBinder binder, WorkSource ws) { 2234 mLog.trace("updateWifiLockWorkSource uid=%").c(Binder.getCallingUid()).flush(); 2235 mWifiLockManager.updateWifiLockWorkSource(binder, ws); 2236 } 2237 2238 @Override 2239 public boolean releaseWifiLock(IBinder binder) { 2240 mLog.trace("releaseWifiLock uid=%").c(Binder.getCallingUid()).flush(); 2241 if (mWifiLockManager.releaseWifiLock(binder)) { 2242 mWifiController.sendMessage(CMD_LOCKS_CHANGED); 2243 return true; 2244 } 2245 return false; 2246 } 2247 2248 @Override 2249 public void initializeMulticastFiltering() { 2250 enforceMulticastChangePermission(); 2251 mLog.trace("initializeMulticastFiltering uid=%").c(Binder.getCallingUid()).flush(); 2252 mWifiMulticastLockManager.initializeFiltering(); 2253 } 2254 2255 @Override 2256 public void acquireMulticastLock(IBinder binder, String tag) { 2257 enforceMulticastChangePermission(); 2258 mLog.trace("acquireMulticastLock uid=%").c(Binder.getCallingUid()).flush(); 2259 mWifiMulticastLockManager.acquireLock(binder, tag); 2260 } 2261 2262 @Override 2263 public void releaseMulticastLock() { 2264 enforceMulticastChangePermission(); 2265 mLog.trace("releaseMulticastLock uid=%").c(Binder.getCallingUid()).flush(); 2266 mWifiMulticastLockManager.releaseLock(); 2267 } 2268 2269 @Override 2270 public boolean isMulticastEnabled() { 2271 enforceAccessPermission(); 2272 mLog.trace("isMulticastEnabled uid=%").c(Binder.getCallingUid()).flush(); 2273 return mWifiMulticastLockManager.isMulticastEnabled(); 2274 } 2275 2276 @Override 2277 public void enableVerboseLogging(int verbose) { 2278 enforceAccessPermission(); 2279 mLog.trace("enableVerboseLogging uid=% verbose=%") 2280 .c(Binder.getCallingUid()) 2281 .c(verbose).flush(); 2282 mFacade.setIntegerSetting( 2283 mContext, Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, verbose); 2284 enableVerboseLoggingInternal(verbose); 2285 } 2286 2287 void enableVerboseLoggingInternal(int verbose) { 2288 mWifiStateMachine.enableVerboseLogging(verbose); 2289 mWifiLockManager.enableVerboseLogging(verbose); 2290 mWifiMulticastLockManager.enableVerboseLogging(verbose); 2291 mWifiInjector.getWifiLastResortWatchdog().enableVerboseLogging(verbose); 2292 mWifiInjector.getWifiBackupRestore().enableVerboseLogging(verbose); 2293 LogcatLog.enableVerboseLogging(verbose); 2294 } 2295 2296 @Override 2297 public int getVerboseLoggingLevel() { 2298 enforceAccessPermission(); 2299 mLog.trace("getVerboseLoggingLevel uid=%").c(Binder.getCallingUid()).flush(); 2300 return mFacade.getIntegerSetting( 2301 mContext, Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, 0); 2302 } 2303 2304 @Override 2305 public void enableAggressiveHandover(int enabled) { 2306 enforceAccessPermission(); 2307 mLog.trace("enableAggressiveHandover uid=% enabled=%") 2308 .c(Binder.getCallingUid()) 2309 .c(enabled) 2310 .flush(); 2311 mWifiStateMachine.enableAggressiveHandover(enabled); 2312 } 2313 2314 @Override 2315 public int getAggressiveHandover() { 2316 enforceAccessPermission(); 2317 mLog.trace("getAggressiveHandover uid=%").c(Binder.getCallingUid()).flush(); 2318 return mWifiStateMachine.getAggressiveHandover(); 2319 } 2320 2321 @Override 2322 public void setAllowScansWithTraffic(int enabled) { 2323 enforceAccessPermission(); 2324 mLog.trace("setAllowScansWithTraffic uid=% enabled=%") 2325 .c(Binder.getCallingUid()) 2326 .c(enabled).flush(); 2327 mWifiStateMachine.setAllowScansWithTraffic(enabled); 2328 } 2329 2330 @Override 2331 public int getAllowScansWithTraffic() { 2332 enforceAccessPermission(); 2333 mLog.trace("getAllowScansWithTraffic uid=%").c(Binder.getCallingUid()).flush(); 2334 return mWifiStateMachine.getAllowScansWithTraffic(); 2335 } 2336 2337 @Override 2338 public boolean setEnableAutoJoinWhenAssociated(boolean enabled) { 2339 enforceChangePermission(); 2340 mLog.trace("setEnableAutoJoinWhenAssociated uid=% enabled=%") 2341 .c(Binder.getCallingUid()) 2342 .c(enabled).flush(); 2343 return mWifiStateMachine.setEnableAutoJoinWhenAssociated(enabled); 2344 } 2345 2346 @Override 2347 public boolean getEnableAutoJoinWhenAssociated() { 2348 enforceAccessPermission(); 2349 mLog.trace("getEnableAutoJoinWhenAssociated uid=%").c(Binder.getCallingUid()).flush(); 2350 return mWifiStateMachine.getEnableAutoJoinWhenAssociated(); 2351 } 2352 2353 /* Return the Wifi Connection statistics object */ 2354 @Override 2355 public WifiConnectionStatistics getConnectionStatistics() { 2356 enforceAccessPermission(); 2357 enforceReadCredentialPermission(); 2358 mLog.trace("getConnectionStatistics uid=%").c(Binder.getCallingUid()).flush(); 2359 if (mWifiStateMachineChannel != null) { 2360 return mWifiStateMachine.syncGetConnectionStatistics(mWifiStateMachineChannel); 2361 } else { 2362 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2363 return null; 2364 } 2365 } 2366 2367 @Override 2368 public void factoryReset() { 2369 enforceConnectivityInternalPermission(); 2370 mLog.trace("factoryReset uid=%").c(Binder.getCallingUid()).flush(); 2371 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 2372 return; 2373 } 2374 2375 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 2376 // Turn mobile hotspot off 2377 setWifiApEnabled(null, false); 2378 } 2379 2380 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_WIFI)) { 2381 // Enable wifi 2382 try { 2383 setWifiEnabled(mContext.getOpPackageName(), true); 2384 } catch (RemoteException e) { 2385 /* ignore - local call */ 2386 } 2387 // Delete all Wifi SSIDs 2388 if (mWifiStateMachineChannel != null) { 2389 List<WifiConfiguration> networks = mWifiStateMachine.syncGetConfiguredNetworks( 2390 Binder.getCallingUid(), mWifiStateMachineChannel); 2391 if (networks != null) { 2392 for (WifiConfiguration config : networks) { 2393 removeNetwork(config.networkId); 2394 } 2395 saveConfiguration(); 2396 } 2397 } 2398 } 2399 } 2400 2401 /* private methods */ 2402 static boolean logAndReturnFalse(String s) { 2403 Log.d(TAG, s); 2404 return false; 2405 } 2406 2407 public static boolean isValid(WifiConfiguration config) { 2408 String validity = checkValidity(config); 2409 return validity == null || logAndReturnFalse(validity); 2410 } 2411 2412 public static String checkValidity(WifiConfiguration config) { 2413 if (config.allowedKeyManagement == null) 2414 return "allowed kmgmt"; 2415 2416 if (config.allowedKeyManagement.cardinality() > 1) { 2417 if (config.allowedKeyManagement.cardinality() != 2) { 2418 return "cardinality != 2"; 2419 } 2420 if (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_EAP)) { 2421 return "not WPA_EAP"; 2422 } 2423 if ((!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.IEEE8021X)) 2424 && (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK))) { 2425 return "not PSK or 8021X"; 2426 } 2427 } 2428 if (config.getIpAssignment() == IpConfiguration.IpAssignment.STATIC) { 2429 StaticIpConfiguration staticIpConf = config.getStaticIpConfiguration(); 2430 if (staticIpConf == null) { 2431 return "null StaticIpConfiguration"; 2432 } 2433 if (staticIpConf.ipAddress == null) { 2434 return "null static ip Address"; 2435 } 2436 } 2437 return null; 2438 } 2439 2440 @Override 2441 public Network getCurrentNetwork() { 2442 enforceAccessPermission(); 2443 mLog.trace("getCurrentNetwork uid=%").c(Binder.getCallingUid()).flush(); 2444 return mWifiStateMachine.getCurrentNetwork(); 2445 } 2446 2447 public static String toHexString(String s) { 2448 if (s == null) { 2449 return "null"; 2450 } 2451 StringBuilder sb = new StringBuilder(); 2452 sb.append('\'').append(s).append('\''); 2453 for (int n = 0; n < s.length(); n++) { 2454 sb.append(String.format(" %02x", s.charAt(n) & 0xffff)); 2455 } 2456 return sb.toString(); 2457 } 2458 2459 public void hideCertFromUnaffiliatedUsers(String alias) { 2460 mCertManager.hideCertFromUnaffiliatedUsers(alias); 2461 } 2462 2463 public String[] listClientCertsForCurrentUser() { 2464 return mCertManager.listClientCertsForCurrentUser(); 2465 } 2466 2467 /** 2468 * Enable/disable WifiConnectivityManager at runtime 2469 * 2470 * @param enabled true-enable; false-disable 2471 */ 2472 @Override 2473 public void enableWifiConnectivityManager(boolean enabled) { 2474 enforceConnectivityInternalPermission(); 2475 mLog.trace("enableWifiConnectivityManager uid=% enabled=%") 2476 .c(Binder.getCallingUid()) 2477 .c(enabled).flush(); 2478 mWifiStateMachine.enableWifiConnectivityManager(enabled); 2479 } 2480 2481 /** 2482 * Retrieve the data to be backed to save the current state. 2483 * 2484 * @return Raw byte stream of the data to be backed up. 2485 */ 2486 @Override 2487 public byte[] retrieveBackupData() { 2488 enforceReadCredentialPermission(); 2489 enforceAccessPermission(); 2490 mLog.trace("retrieveBackupData uid=%").c(Binder.getCallingUid()).flush(); 2491 if (mWifiStateMachineChannel == null) { 2492 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2493 return null; 2494 } 2495 2496 Slog.d(TAG, "Retrieving backup data"); 2497 List<WifiConfiguration> wifiConfigurations = 2498 mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel); 2499 byte[] backupData = 2500 mWifiBackupRestore.retrieveBackupDataFromConfigurations(wifiConfigurations); 2501 Slog.d(TAG, "Retrieved backup data"); 2502 return backupData; 2503 } 2504 2505 /** 2506 * Helper method to restore networks retrieved from backup data. 2507 * 2508 * @param configurations list of WifiConfiguration objects parsed from the backup data. 2509 */ 2510 private void restoreNetworks(List<WifiConfiguration> configurations) { 2511 if (configurations == null) { 2512 Slog.e(TAG, "Backup data parse failed"); 2513 return; 2514 } 2515 for (WifiConfiguration configuration : configurations) { 2516 int networkId = mWifiStateMachine.syncAddOrUpdateNetwork( 2517 mWifiStateMachineChannel, configuration); 2518 if (networkId == WifiConfiguration.INVALID_NETWORK_ID) { 2519 Slog.e(TAG, "Restore network failed: " + configuration.configKey()); 2520 continue; 2521 } 2522 // Enable all networks restored. 2523 mWifiStateMachine.syncEnableNetwork(mWifiStateMachineChannel, networkId, false); 2524 } 2525 } 2526 2527 /** 2528 * Restore state from the backed up data. 2529 * 2530 * @param data Raw byte stream of the backed up data. 2531 */ 2532 @Override 2533 public void restoreBackupData(byte[] data) { 2534 enforceChangePermission(); 2535 mLog.trace("restoreBackupData uid=%").c(Binder.getCallingUid()).flush(); 2536 if (mWifiStateMachineChannel == null) { 2537 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2538 return; 2539 } 2540 2541 Slog.d(TAG, "Restoring backup data"); 2542 List<WifiConfiguration> wifiConfigurations = 2543 mWifiBackupRestore.retrieveConfigurationsFromBackupData(data); 2544 restoreNetworks(wifiConfigurations); 2545 Slog.d(TAG, "Restored backup data"); 2546 } 2547 2548 /** 2549 * Restore state from the older supplicant back up data. 2550 * The old backup data was essentially a backup of wpa_supplicant.conf & ipconfig.txt file. 2551 * 2552 * @param supplicantData Raw byte stream of wpa_supplicant.conf 2553 * @param ipConfigData Raw byte stream of ipconfig.txt 2554 */ 2555 public void restoreSupplicantBackupData(byte[] supplicantData, byte[] ipConfigData) { 2556 enforceChangePermission(); 2557 mLog.trace("restoreSupplicantBackupData uid=%").c(Binder.getCallingUid()).flush(); 2558 if (mWifiStateMachineChannel == null) { 2559 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2560 return; 2561 } 2562 2563 Slog.d(TAG, "Restoring supplicant backup data"); 2564 List<WifiConfiguration> wifiConfigurations = 2565 mWifiBackupRestore.retrieveConfigurationsFromSupplicantBackupData( 2566 supplicantData, ipConfigData); 2567 restoreNetworks(wifiConfigurations); 2568 Slog.d(TAG, "Restored supplicant backup data"); 2569 } 2570} 2571