WifiServiceImpl.java revision 3f8483262cf59572d0c0b3c42e72d8ce65a096ff
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_INTERFACE_NAME; 22import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_MODE; 23import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_STATE; 24import static android.net.wifi.WifiManager.LocalOnlyHotspotCallback.ERROR_GENERIC; 25import static android.net.wifi.WifiManager.LocalOnlyHotspotCallback.ERROR_NO_CHANNEL; 26import static android.net.wifi.WifiManager.SAP_START_FAILURE_NO_CHANNEL; 27import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 28import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 29import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 30 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.OsuProvider; 77import android.net.wifi.hotspot2.PasspointConfiguration; 78import android.os.AsyncTask; 79import android.os.BatteryStats; 80import android.os.Binder; 81import android.os.Build; 82import android.os.Bundle; 83import android.os.HandlerThread; 84import android.os.IBinder; 85import android.os.Looper; 86import android.os.Message; 87import android.os.Messenger; 88import android.os.PowerManager; 89import android.os.Process; 90import android.os.RemoteException; 91import android.os.ResultReceiver; 92import android.os.ShellCallback; 93import android.os.UserHandle; 94import android.os.UserManager; 95import android.os.WorkSource; 96import android.provider.Settings; 97import android.util.ArrayMap; 98import android.util.ArraySet; 99import android.util.Log; 100import android.util.Slog; 101 102import com.android.internal.annotations.GuardedBy; 103import com.android.internal.annotations.VisibleForTesting; 104import com.android.internal.telephony.IccCardConstants; 105import com.android.internal.telephony.PhoneConstants; 106import com.android.internal.telephony.TelephonyIntents; 107import com.android.internal.util.AsyncChannel; 108import com.android.server.wifi.hotspot2.PasspointProvider; 109import com.android.server.wifi.util.WifiHandler; 110import com.android.server.wifi.util.WifiPermissionsUtil; 111 112import java.io.BufferedReader; 113import java.io.FileDescriptor; 114import java.io.FileNotFoundException; 115import java.io.FileReader; 116import java.io.IOException; 117import java.io.PrintWriter; 118import java.net.Inet4Address; 119import java.net.InetAddress; 120import java.security.GeneralSecurityException; 121import java.security.KeyStore; 122import java.security.cert.CertPath; 123import java.security.cert.CertPathValidator; 124import java.security.cert.CertificateFactory; 125import java.security.cert.PKIXParameters; 126import java.security.cert.X509Certificate; 127import java.util.ArrayList; 128import java.util.Arrays; 129import java.util.HashMap; 130import java.util.List; 131import java.util.concurrent.ConcurrentHashMap; 132 133/** 134 * WifiService handles remote WiFi operation requests by implementing 135 * the IWifiManager interface. 136 * 137 * @hide 138 */ 139public class WifiServiceImpl extends IWifiManager.Stub { 140 private static final String TAG = "WifiService"; 141 private static final boolean DBG = true; 142 private static final boolean VDBG = false; 143 144 // Dumpsys argument to enable/disable disconnect on IP reachability failures. 145 private static final String DUMP_ARG_SET_IPREACH_DISCONNECT = "set-ipreach-disconnect"; 146 private static final String DUMP_ARG_SET_IPREACH_DISCONNECT_ENABLED = "enabled"; 147 private static final String DUMP_ARG_SET_IPREACH_DISCONNECT_DISABLED = "disabled"; 148 149 // Default scan background throttling interval if not overriden in settings 150 private static final long DEFAULT_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS = 30 * 60 * 1000; 151 152 // Apps with importance higher than this value is considered as background app. 153 private static final int BACKGROUND_IMPORTANCE_CUTOFF = 154 RunningAppProcessInfo.IMPORTANCE_FOREGROUND_SERVICE; 155 156 final WifiStateMachine mWifiStateMachine; 157 158 private final Context mContext; 159 private final FrameworkFacade mFacade; 160 private final Clock mClock; 161 private final ArraySet<String> mBackgroundThrottlePackageWhitelist = new ArraySet<>(); 162 163 private final PowerManager mPowerManager; 164 private final AppOpsManager mAppOps; 165 private final UserManager mUserManager; 166 private final ActivityManager mActivityManager; 167 private final WifiCountryCode mCountryCode; 168 private long mBackgroundThrottleInterval; 169 // Debug counter tracking scan requests sent by WifiManager 170 private int scanRequestCounter = 0; 171 172 /* 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 if (checkChangePermissionAndReplyIfNotAuthorized( 264 msg, WifiManager.CONNECT_NETWORK_FAILED)) { 265 WifiConfiguration config = (WifiConfiguration) msg.obj; 266 int networkId = msg.arg1; 267 Slog.d(TAG, "CONNECT " 268 + " nid=" + Integer.toString(networkId) 269 + " uid=" + msg.sendingUid 270 + " name=" 271 + mContext.getPackageManager().getNameForUid(msg.sendingUid)); 272 if (config != null) { 273 if (DBG) Slog.d(TAG, "Connect with config " + config); 274 /* Command is forwarded to state machine */ 275 mWifiStateMachine.sendMessage(Message.obtain(msg)); 276 } else if (config == null 277 && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 278 if (DBG) Slog.d(TAG, "Connect with networkId " + networkId); 279 mWifiStateMachine.sendMessage(Message.obtain(msg)); 280 } else { 281 Slog.e(TAG, "ClientHandler.handleMessage ignoring invalid msg=" + msg); 282 replyFailed(msg, WifiManager.CONNECT_NETWORK_FAILED, 283 WifiManager.INVALID_ARGS); 284 } 285 } 286 break; 287 } 288 case WifiManager.SAVE_NETWORK: { 289 if (checkChangePermissionAndReplyIfNotAuthorized( 290 msg, WifiManager.SAVE_NETWORK_FAILED)) { 291 WifiConfiguration config = (WifiConfiguration) msg.obj; 292 int networkId = msg.arg1; 293 Slog.d(TAG, "SAVE" 294 + " nid=" + Integer.toString(networkId) 295 + " uid=" + msg.sendingUid 296 + " name=" 297 + mContext.getPackageManager().getNameForUid(msg.sendingUid)); 298 if (config != null) { 299 if (DBG) Slog.d(TAG, "Save network with config " + config); 300 /* Command is forwarded to state machine */ 301 mWifiStateMachine.sendMessage(Message.obtain(msg)); 302 } else { 303 Slog.e(TAG, "ClientHandler.handleMessage ignoring invalid msg=" + msg); 304 replyFailed(msg, WifiManager.SAVE_NETWORK_FAILED, 305 WifiManager.INVALID_ARGS); 306 } 307 } 308 break; 309 } 310 case WifiManager.FORGET_NETWORK: 311 if (checkChangePermissionAndReplyIfNotAuthorized( 312 msg, WifiManager.FORGET_NETWORK_FAILED)) { 313 mWifiStateMachine.sendMessage(Message.obtain(msg)); 314 } 315 break; 316 case WifiManager.START_WPS: 317 if (checkChangePermissionAndReplyIfNotAuthorized(msg, WifiManager.WPS_FAILED)) { 318 mWifiStateMachine.sendMessage(Message.obtain(msg)); 319 } 320 break; 321 case WifiManager.CANCEL_WPS: 322 if (checkChangePermissionAndReplyIfNotAuthorized( 323 msg, WifiManager.CANCEL_WPS_FAILED)) { 324 mWifiStateMachine.sendMessage(Message.obtain(msg)); 325 } 326 break; 327 case WifiManager.DISABLE_NETWORK: 328 if (checkChangePermissionAndReplyIfNotAuthorized( 329 msg, WifiManager.DISABLE_NETWORK_FAILED)) { 330 mWifiStateMachine.sendMessage(Message.obtain(msg)); 331 } 332 break; 333 case WifiManager.RSSI_PKTCNT_FETCH: { 334 if (checkChangePermissionAndReplyIfNotAuthorized( 335 msg, WifiManager.RSSI_PKTCNT_FETCH_FAILED)) { 336 mWifiStateMachine.sendMessage(Message.obtain(msg)); 337 } 338 break; 339 } 340 default: { 341 Slog.d(TAG, "ClientHandler.handleMessage ignoring msg=" + msg); 342 break; 343 } 344 } 345 } 346 347 /** 348 * Helper method to check if the sender of the message holds the 349 * {@link Manifest.permission#CHANGE_WIFI_STATE} permission, and reply with a failure if it 350 * doesn't 351 * 352 * @param msg Incoming message. 353 * @param replyWhat Param to be filled in the {@link Message#what} field of the failure 354 * reply. 355 * @return true if the sender holds the permission, false otherwise. 356 */ 357 private boolean checkChangePermissionAndReplyIfNotAuthorized(Message msg, int replyWhat) { 358 if (!mWifiPermissionsUtil.checkChangePermission(msg.sendingUid)) { 359 Slog.e(TAG, "ClientHandler.handleMessage ignoring unauthorized msg=" + msg); 360 replyFailed(msg, replyWhat, WifiManager.NOT_AUTHORIZED); 361 return false; 362 } 363 return true; 364 } 365 366 private void replyFailed(Message msg, int what, int why) { 367 if (msg.replyTo == null) return; 368 Message reply = Message.obtain(); 369 reply.what = what; 370 reply.arg1 = why; 371 try { 372 msg.replyTo.send(reply); 373 } catch (RemoteException e) { 374 // There's not much we can do if reply can't be sent! 375 } 376 } 377 } 378 private ClientHandler mClientHandler; 379 380 /** 381 * Handles interaction with WifiStateMachine 382 */ 383 private class WifiStateMachineHandler extends WifiHandler { 384 private AsyncChannel mWsmChannel; 385 386 WifiStateMachineHandler(String tag, Looper looper, AsyncChannel asyncChannel) { 387 super(tag, looper); 388 mWsmChannel = asyncChannel; 389 mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); 390 } 391 392 @Override 393 public void handleMessage(Message msg) { 394 super.handleMessage(msg); 395 switch (msg.what) { 396 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 397 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 398 mWifiStateMachineChannel = mWsmChannel; 399 } else { 400 Slog.e(TAG, "WifiStateMachine connection failure, error=" + msg.arg1); 401 mWifiStateMachineChannel = null; 402 } 403 break; 404 } 405 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 406 Slog.e(TAG, "WifiStateMachine channel lost, msg.arg1 =" + msg.arg1); 407 mWifiStateMachineChannel = null; 408 //Re-establish connection to state machine 409 mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); 410 break; 411 } 412 default: { 413 Slog.d(TAG, "WifiStateMachineHandler.handleMessage ignoring msg=" + msg); 414 break; 415 } 416 } 417 } 418 } 419 420 WifiStateMachineHandler mWifiStateMachineHandler; 421 private WifiController mWifiController; 422 private final WifiLockManager mWifiLockManager; 423 private final WifiMulticastLockManager mWifiMulticastLockManager; 424 425 public WifiServiceImpl(Context context, WifiInjector wifiInjector, AsyncChannel asyncChannel) { 426 mContext = context; 427 mWifiInjector = wifiInjector; 428 mClock = wifiInjector.getClock(); 429 430 mFacade = mWifiInjector.getFrameworkFacade(); 431 mWifiMetrics = mWifiInjector.getWifiMetrics(); 432 mTrafficPoller = mWifiInjector.getWifiTrafficPoller(); 433 mUserManager = mWifiInjector.getUserManager(); 434 mCountryCode = mWifiInjector.getWifiCountryCode(); 435 mWifiStateMachine = mWifiInjector.getWifiStateMachine(); 436 mWifiStateMachine.enableRssiPolling(true); 437 mSettingsStore = mWifiInjector.getWifiSettingsStore(); 438 mPowerManager = mContext.getSystemService(PowerManager.class); 439 mAppOps = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); 440 mActivityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 441 mCertManager = mWifiInjector.getWifiCertManager(); 442 mWifiLockManager = mWifiInjector.getWifiLockManager(); 443 mWifiMulticastLockManager = mWifiInjector.getWifiMulticastLockManager(); 444 HandlerThread wifiServiceHandlerThread = mWifiInjector.getWifiServiceHandlerThread(); 445 mClientHandler = new ClientHandler(TAG, wifiServiceHandlerThread.getLooper()); 446 mWifiStateMachineHandler = new WifiStateMachineHandler(TAG, 447 wifiServiceHandlerThread.getLooper(), asyncChannel); 448 mWifiController = mWifiInjector.getWifiController(); 449 mWifiBackupRestore = mWifiInjector.getWifiBackupRestore(); 450 mPermissionReviewRequired = Build.PERMISSIONS_REVIEW_REQUIRED 451 || context.getResources().getBoolean( 452 com.android.internal.R.bool.config_permissionReviewRequired); 453 mWifiPermissionsUtil = mWifiInjector.getWifiPermissionsUtil(); 454 mLog = mWifiInjector.makeLog(TAG); 455 mFrameworkFacade = wifiInjector.getFrameworkFacade(); 456 mLastScanTimestamps = new ArrayMap<>(); 457 updateBackgroundThrottleInterval(); 458 updateBackgroundThrottlingWhitelist(); 459 mIfaceIpModes = new ConcurrentHashMap<>(); 460 mLocalOnlyHotspotRequests = new HashMap<>(); 461 enableVerboseLoggingInternal(getVerboseLoggingLevel()); 462 } 463 464 /** 465 * Provide a way for unit tests to set valid log object in the WifiHandler 466 * @param log WifiLog object to assign to the clientHandler 467 */ 468 @VisibleForTesting 469 public void setWifiHandlerLogForTest(WifiLog log) { 470 mClientHandler.setWifiLog(log); 471 } 472 473 /** 474 * Check if we are ready to start wifi. 475 * 476 * First check if we will be restarting system services to decrypt the device. If the device is 477 * not encrypted, check if Wi-Fi needs to be enabled and start if needed 478 * 479 * This function is used only at boot time. 480 */ 481 public void checkAndStartWifi() { 482 // First check if we will end up restarting WifiService 483 if (mFrameworkFacade.inStorageManagerCryptKeeperBounce()) { 484 Log.d(TAG, "Device still encrypted. Need to restart SystemServer. Do not start wifi."); 485 return; 486 } 487 488 // Check if wi-fi needs to be enabled 489 boolean wifiEnabled = mSettingsStore.isWifiToggleEnabled(); 490 Slog.i(TAG, "WifiService starting up with Wi-Fi " + 491 (wifiEnabled ? "enabled" : "disabled")); 492 493 registerForScanModeChange(); 494 registerForBackgroundThrottleChanges(); 495 mContext.registerReceiver( 496 new BroadcastReceiver() { 497 @Override 498 public void onReceive(Context context, Intent intent) { 499 if (mSettingsStore.handleAirplaneModeToggled()) { 500 mWifiController.sendMessage(CMD_AIRPLANE_TOGGLED); 501 } 502 if (mSettingsStore.isAirplaneModeOn()) { 503 Log.d(TAG, "resetting country code because Airplane mode is ON"); 504 mCountryCode.airplaneModeEnabled(); 505 } 506 } 507 }, 508 new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED)); 509 510 mContext.registerReceiver( 511 new BroadcastReceiver() { 512 @Override 513 public void onReceive(Context context, Intent intent) { 514 String state = intent.getStringExtra(IccCardConstants.INTENT_KEY_ICC_STATE); 515 if (IccCardConstants.INTENT_VALUE_ICC_ABSENT.equals(state)) { 516 Log.d(TAG, "resetting networks because SIM was removed"); 517 mWifiStateMachine.resetSimAuthNetworks(false); 518 Log.d(TAG, "resetting country code because SIM is removed"); 519 mCountryCode.simCardRemoved(); 520 } else if (IccCardConstants.INTENT_VALUE_ICC_LOADED.equals(state)) { 521 Log.d(TAG, "resetting networks because SIM was loaded"); 522 mWifiStateMachine.resetSimAuthNetworks(true); 523 } 524 } 525 }, 526 new IntentFilter(TelephonyIntents.ACTION_SIM_STATE_CHANGED)); 527 528 mContext.registerReceiver( 529 new BroadcastReceiver() { 530 @Override 531 public void onReceive(Context context, Intent intent) { 532 final int currState = intent.getIntExtra(EXTRA_WIFI_AP_STATE, 533 WIFI_AP_STATE_DISABLED); 534 final int prevState = intent.getIntExtra(EXTRA_PREVIOUS_WIFI_AP_STATE, 535 WIFI_AP_STATE_DISABLED); 536 final int errorCode = intent.getIntExtra(EXTRA_WIFI_AP_FAILURE_REASON, 537 HOTSPOT_NO_ERROR); 538 final String ifaceName = 539 intent.getStringExtra(EXTRA_WIFI_AP_INTERFACE_NAME); 540 final int mode = intent.getIntExtra(EXTRA_WIFI_AP_MODE, 541 WifiManager.IFACE_IP_MODE_UNSPECIFIED); 542 handleWifiApStateChange(currState, prevState, errorCode, ifaceName, mode); 543 } 544 }, 545 new IntentFilter(WifiManager.WIFI_AP_STATE_CHANGED_ACTION)); 546 547 // Adding optimizations of only receiving broadcasts when wifi is enabled 548 // can result in race conditions when apps toggle wifi in the background 549 // without active user involvement. Always receive broadcasts. 550 registerForBroadcasts(); 551 registerForPackageOrUserRemoval(); 552 mInIdleMode = mPowerManager.isDeviceIdleMode(); 553 554 if (!mWifiStateMachine.syncInitialize(mWifiStateMachineChannel)) { 555 Log.wtf(TAG, "Failed to initialize WifiStateMachine"); 556 } 557 mWifiController.start(); 558 559 // If we are already disabled (could be due to airplane mode), avoid changing persist 560 // state here 561 if (wifiEnabled) { 562 try { 563 setWifiEnabled(mContext.getPackageName(), wifiEnabled); 564 } catch (RemoteException e) { 565 /* ignore - local call */ 566 } 567 } 568 } 569 570 public void handleUserSwitch(int userId) { 571 mWifiStateMachine.handleUserSwitch(userId); 572 } 573 574 public void handleUserUnlock(int userId) { 575 mWifiStateMachine.handleUserUnlock(userId); 576 } 577 578 public void handleUserStop(int userId) { 579 mWifiStateMachine.handleUserStop(userId); 580 } 581 582 /** 583 * see {@link android.net.wifi.WifiManager#startScan} 584 * and {@link android.net.wifi.WifiManager#startCustomizedScan} 585 * 586 * @param settings If null, use default parameter, i.e. full scan. 587 * @param workSource If null, all blame is given to the calling uid. 588 * @param packageName Package name of the app that requests wifi scan. 589 */ 590 @Override 591 public void startScan(ScanSettings settings, WorkSource workSource, String packageName) { 592 enforceChangePermission(); 593 594 mLog.trace("startScan uid=%").c(Binder.getCallingUid()).flush(); 595 // Check and throttle background apps for wifi scan. 596 if (isRequestFromBackground(packageName)) { 597 long lastScanMs = mLastScanTimestamps.getOrDefault(packageName, 0L); 598 long elapsedRealtime = mClock.getElapsedSinceBootMillis(); 599 600 if (lastScanMs != 0 && (elapsedRealtime - lastScanMs) < mBackgroundThrottleInterval) { 601 sendFailedScanBroadcast(); 602 return; 603 } 604 // Proceed with the scan request and record the time. 605 mLastScanTimestamps.put(packageName, elapsedRealtime); 606 } 607 synchronized (this) { 608 if (mWifiScanner == null) { 609 mWifiScanner = mWifiInjector.getWifiScanner(); 610 } 611 if (mInIdleMode) { 612 // Need to send an immediate scan result broadcast in case the 613 // caller is waiting for a result .. 614 615 // TODO: investigate if the logic to cancel scans when idle can move to 616 // WifiScanningServiceImpl. This will 1 - clean up WifiServiceImpl and 2 - 617 // avoid plumbing an awkward path to report a cancelled/failed scan. This will 618 // be sent directly until b/31398592 is fixed. 619 sendFailedScanBroadcast(); 620 mScanPending = true; 621 return; 622 } 623 } 624 if (settings != null) { 625 settings = new ScanSettings(settings); 626 if (!settings.isValid()) { 627 Slog.e(TAG, "invalid scan setting"); 628 return; 629 } 630 } 631 if (workSource != null) { 632 enforceWorkSourcePermission(); 633 // WifiManager currently doesn't use names, so need to clear names out of the 634 // supplied WorkSource to allow future WorkSource combining. 635 workSource.clearNames(); 636 } 637 if (workSource == null && Binder.getCallingUid() >= 0) { 638 workSource = new WorkSource(Binder.getCallingUid()); 639 } 640 mWifiStateMachine.startScan(Binder.getCallingUid(), scanRequestCounter++, 641 settings, workSource); 642 } 643 644 // Send a failed scan broadcast to indicate the current scan request failed. 645 private void sendFailedScanBroadcast() { 646 // clear calling identity to send broadcast 647 long callingIdentity = Binder.clearCallingIdentity(); 648 try { 649 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 650 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 651 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, false); 652 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 653 } finally { 654 // restore calling identity 655 Binder.restoreCallingIdentity(callingIdentity); 656 } 657 658 } 659 660 // Check if the request comes from background. 661 private boolean isRequestFromBackground(String packageName) { 662 // Requests from system or wifi are not background. 663 if (Binder.getCallingUid() == Process.SYSTEM_UID 664 || Binder.getCallingUid() == Process.WIFI_UID) { 665 return false; 666 } 667 mAppOps.checkPackage(Binder.getCallingUid(), packageName); 668 if (mBackgroundThrottlePackageWhitelist.contains(packageName)) { 669 return false; 670 } 671 672 // getPackageImportance requires PACKAGE_USAGE_STATS permission, so clearing the incoming 673 // identify so the permission check can be done on system process where wifi runs in. 674 long callingIdentity = Binder.clearCallingIdentity(); 675 try { 676 return mActivityManager.getPackageImportance(packageName) 677 > BACKGROUND_IMPORTANCE_CUTOFF; 678 } finally { 679 Binder.restoreCallingIdentity(callingIdentity); 680 } 681 } 682 683 @Override 684 public String getCurrentNetworkWpsNfcConfigurationToken() { 685 enforceConnectivityInternalPermission(); 686 mLog.trace("getCurrentNetworkWpsNfcConfigurationToken uid=%") 687 .c(Binder.getCallingUid()).flush(); 688 // TODO Add private logging for netId b/33807876 689 return mWifiStateMachine.syncGetCurrentNetworkWpsNfcConfigurationToken(); 690 } 691 692 boolean mInIdleMode; 693 boolean mScanPending; 694 695 void handleIdleModeChanged() { 696 boolean doScan = false; 697 synchronized (this) { 698 boolean idle = mPowerManager.isDeviceIdleMode(); 699 if (mInIdleMode != idle) { 700 mInIdleMode = idle; 701 if (!idle) { 702 if (mScanPending) { 703 mScanPending = false; 704 doScan = true; 705 } 706 } 707 } 708 } 709 if (doScan) { 710 // Someone requested a scan while we were idle; do a full scan now. 711 // The package name doesn't matter as the request comes from System UID. 712 startScan(null, null, ""); 713 } 714 } 715 716 private void enforceNetworkSettingsPermission() { 717 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.NETWORK_SETTINGS, 718 "WifiService"); 719 } 720 721 private void enforceNetworkStackPermission() { 722 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.NETWORK_STACK, 723 "WifiService"); 724 } 725 726 private void enforceAccessPermission() { 727 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.ACCESS_WIFI_STATE, 728 "WifiService"); 729 } 730 731 private void enforceChangePermission() { 732 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.CHANGE_WIFI_STATE, 733 "WifiService"); 734 } 735 736 private void enforceLocationHardwarePermission() { 737 mContext.enforceCallingOrSelfPermission(Manifest.permission.LOCATION_HARDWARE, 738 "LocationHardware"); 739 } 740 741 private void enforceReadCredentialPermission() { 742 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.READ_WIFI_CREDENTIAL, 743 "WifiService"); 744 } 745 746 private void enforceWorkSourcePermission() { 747 mContext.enforceCallingPermission(android.Manifest.permission.UPDATE_DEVICE_STATS, 748 "WifiService"); 749 750 } 751 752 private void enforceMulticastChangePermission() { 753 mContext.enforceCallingOrSelfPermission( 754 android.Manifest.permission.CHANGE_WIFI_MULTICAST_STATE, 755 "WifiService"); 756 } 757 758 private void enforceConnectivityInternalPermission() { 759 mContext.enforceCallingOrSelfPermission( 760 android.Manifest.permission.CONNECTIVITY_INTERNAL, 761 "ConnectivityService"); 762 } 763 764 private void enforceLocationPermission(String pkgName, int uid) { 765 mWifiPermissionsUtil.enforceLocationPermission(pkgName, uid); 766 } 767 768 /** 769 * see {@link android.net.wifi.WifiManager#setWifiEnabled(boolean)} 770 * @param enable {@code true} to enable, {@code false} to disable. 771 * @return {@code true} if the enable/disable operation was 772 * started or is already in the queue. 773 */ 774 @Override 775 public synchronized boolean setWifiEnabled(String packageName, boolean enable) 776 throws RemoteException { 777 enforceChangePermission(); 778 Slog.d(TAG, "setWifiEnabled: " + enable + " pid=" + Binder.getCallingPid() 779 + ", uid=" + Binder.getCallingUid() + ", package=" + packageName); 780 mLog.trace("setWifiEnabled package=% uid=% enable=%").c(packageName) 781 .c(Binder.getCallingUid()).c(enable).flush(); 782 783 // If SoftAp is enabled, only Settings is allowed to toggle wifi 784 boolean apEnabled = 785 mWifiStateMachine.syncGetWifiApState() != WifiManager.WIFI_AP_STATE_DISABLED; 786 boolean isFromSettings = 787 mWifiPermissionsUtil.checkNetworkSettingsPermission(Binder.getCallingUid()); 788 if (apEnabled && !isFromSettings) { 789 mLog.trace("setWifiEnabled SoftAp not disabled: only Settings can enable wifi").flush(); 790 return false; 791 } 792 793 /* 794 * Caller might not have WRITE_SECURE_SETTINGS, 795 * only CHANGE_WIFI_STATE is enforced 796 */ 797 long ident = Binder.clearCallingIdentity(); 798 try { 799 if (! mSettingsStore.handleWifiToggled(enable)) { 800 // Nothing to do if wifi cannot be toggled 801 return true; 802 } 803 } finally { 804 Binder.restoreCallingIdentity(ident); 805 } 806 807 808 if (mPermissionReviewRequired) { 809 final int wiFiEnabledState = getWifiEnabledState(); 810 if (enable) { 811 if (wiFiEnabledState == WifiManager.WIFI_STATE_DISABLING 812 || wiFiEnabledState == WifiManager.WIFI_STATE_DISABLED) { 813 if (startConsentUi(packageName, Binder.getCallingUid(), 814 WifiManager.ACTION_REQUEST_ENABLE)) { 815 return true; 816 } 817 } 818 } else if (wiFiEnabledState == WifiManager.WIFI_STATE_ENABLING 819 || wiFiEnabledState == WifiManager.WIFI_STATE_ENABLED) { 820 if (startConsentUi(packageName, Binder.getCallingUid(), 821 WifiManager.ACTION_REQUEST_DISABLE)) { 822 return true; 823 } 824 } 825 } 826 827 mWifiController.sendMessage(CMD_WIFI_TOGGLED); 828 return true; 829 } 830 831 /** 832 * see {@link WifiManager#getWifiState()} 833 * @return One of {@link WifiManager#WIFI_STATE_DISABLED}, 834 * {@link WifiManager#WIFI_STATE_DISABLING}, 835 * {@link WifiManager#WIFI_STATE_ENABLED}, 836 * {@link WifiManager#WIFI_STATE_ENABLING}, 837 * {@link WifiManager#WIFI_STATE_UNKNOWN} 838 */ 839 @Override 840 public int getWifiEnabledState() { 841 enforceAccessPermission(); 842 mLog.trace("getWifiEnabledState uid=%").c(Binder.getCallingUid()).flush(); 843 return mWifiStateMachine.syncGetWifiState(); 844 } 845 846 /** 847 * see {@link android.net.wifi.WifiManager#setWifiApEnabled(WifiConfiguration, boolean)} 848 * @param wifiConfig SSID, security and channel details as 849 * part of WifiConfiguration 850 * @param enabled true to enable and false to disable 851 */ 852 @Override 853 public void setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) { 854 enforceChangePermission(); 855 mWifiPermissionsUtil.enforceTetherChangePermission(mContext); 856 857 mLog.trace("setWifiApEnabled uid=% enable=%").c(Binder.getCallingUid()).c(enabled).flush(); 858 859 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 860 throw new SecurityException("DISALLOW_CONFIG_TETHERING is enabled for this user."); 861 } 862 // null wifiConfig is a meaningful input for CMD_SET_AP 863 if (wifiConfig == null || isValid(wifiConfig)) { 864 int mode = WifiManager.IFACE_IP_MODE_UNSPECIFIED; 865 SoftApModeConfiguration softApConfig = new SoftApModeConfiguration(mode, wifiConfig); 866 mWifiController.sendMessage(CMD_SET_AP, enabled ? 1 : 0, 0, softApConfig); 867 } else { 868 Slog.e(TAG, "Invalid WifiConfiguration"); 869 } 870 } 871 872 /** 873 * see {@link WifiManager#getWifiApState()} 874 * @return One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 875 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 876 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 877 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 878 * {@link WifiManager#WIFI_AP_STATE_FAILED} 879 */ 880 @Override 881 public int getWifiApEnabledState() { 882 enforceAccessPermission(); 883 mLog.trace("getWifiApEnabledState uid=%").c(Binder.getCallingUid()).flush(); 884 return mWifiStateMachine.syncGetWifiApState(); 885 } 886 887 /** 888 * see {@link android.net.wifi.WifiManager#updateInterfaceIpState(String, int)} 889 * 890 * The possible modes include: {@link WifiManager#IFACE_IP_MODE_TETHERED}, 891 * {@link WifiManager#IFACE_IP_MODE_LOCAL_ONLY}, 892 * {@link WifiManager#IFACE_IP_MODE_CONFIGURATION_ERROR} 893 * 894 * @param ifaceName String name of the updated interface 895 * @param mode new operating mode of the interface 896 * 897 * @throws SecurityException if the caller does not have permission to call update 898 */ 899 @Override 900 public void updateInterfaceIpState(String ifaceName, int mode) { 901 // NETWORK_STACK is a signature only permission. 902 enforceNetworkStackPermission(); 903 904 // hand off the work to our handler thread 905 mClientHandler.post(() -> { 906 updateInterfaceIpStateInternal(ifaceName, mode); 907 }); 908 } 909 910 private void updateInterfaceIpStateInternal(String ifaceName, int mode) { 911 // update interface IP state related to tethering and hotspot 912 synchronized (mLocalOnlyHotspotRequests) { 913 // update the mode tracker here - we clear out state below 914 Integer previousMode = WifiManager.IFACE_IP_MODE_UNSPECIFIED; 915 if (ifaceName != null) { 916 previousMode = mIfaceIpModes.put(ifaceName, mode); 917 } 918 Slog.d(TAG, "updateInterfaceIpState: ifaceName=" + ifaceName + " mode=" + mode 919 + " previous mode= " + previousMode); 920 921 switch (mode) { 922 case WifiManager.IFACE_IP_MODE_LOCAL_ONLY: 923 // first make sure we have registered requests.. otherwise clean up 924 if (mLocalOnlyHotspotRequests.isEmpty()) { 925 // we don't have requests... stop the hotspot 926 stopSoftAp(); 927 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 928 return; 929 } 930 // LOHS is ready to go! Call our registered requestors! 931 sendHotspotStartedMessageToAllLOHSRequestInfoEntriesLocked(); 932 break; 933 case WifiManager.IFACE_IP_MODE_TETHERED: 934 // we have tethered an interface. we don't really act on this now other than if 935 // we have LOHS requests, and this is an issue. return incompatible mode for 936 // onFailed for the registered requestors since this can result from a race 937 // between a tether request and a hotspot request (tethering wins). 938 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( 939 LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE); 940 break; 941 case WifiManager.IFACE_IP_MODE_CONFIGURATION_ERROR: 942 // there was an error setting up the hotspot... trigger onFailed for the 943 // registered LOHS requestors 944 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( 945 LocalOnlyHotspotCallback.ERROR_GENERIC); 946 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 947 break; 948 case WifiManager.IFACE_IP_MODE_UNSPECIFIED: 949 if (ifaceName == null) { 950 // interface name is null, this is due to softap teardown. clear all 951 // entries for now. 952 // TODO: Deal with individual interfaces when we receive updates for them 953 mIfaceIpModes.clear(); 954 return; 955 } 956 break; 957 default: 958 mLog.trace("updateInterfaceIpStateInternal: unknown mode %").c(mode).flush(); 959 } 960 } 961 } 962 963 /** 964 * see {@link android.net.wifi.WifiManager#startSoftAp(WifiConfiguration)} 965 * @param wifiConfig SSID, security and channel details as part of WifiConfiguration 966 * @return {@code true} if softap start was triggered 967 * @throws SecurityException if the caller does not have permission to start softap 968 */ 969 @Override 970 public boolean startSoftAp(WifiConfiguration wifiConfig) { 971 // NETWORK_STACK is a signature only permission. 972 enforceNetworkStackPermission(); 973 974 mLog.trace("startSoftAp uid=%").c(Binder.getCallingUid()).flush(); 975 976 synchronized (mLocalOnlyHotspotRequests) { 977 // If a tethering request comes in while we have LOHS running (or requested), call stop 978 // for softap mode and restart softap with the tethering config. 979 if (!mLocalOnlyHotspotRequests.isEmpty()) { 980 stopSoftApInternal(); 981 } 982 983 return startSoftApInternal(wifiConfig, WifiManager.IFACE_IP_MODE_TETHERED); 984 } 985 } 986 987 /** 988 * Internal method to start softap mode. Callers of this method should have already checked 989 * proper permissions beyond the NetworkStack permission. 990 */ 991 private boolean startSoftApInternal(WifiConfiguration wifiConfig, int mode) { 992 mLog.trace("startSoftApInternal uid=% mode=%") 993 .c(Binder.getCallingUid()).c(mode).flush(); 994 995 // null wifiConfig is a meaningful input for CMD_SET_AP 996 if (wifiConfig == null || isValid(wifiConfig)) { 997 SoftApModeConfiguration softApConfig = new SoftApModeConfiguration(mode, wifiConfig); 998 mWifiController.sendMessage(CMD_SET_AP, 1, 0, softApConfig); 999 return true; 1000 } 1001 Slog.e(TAG, "Invalid WifiConfiguration"); 1002 return false; 1003 } 1004 1005 /** 1006 * see {@link android.net.wifi.WifiManager#stopSoftAp()} 1007 * @return {@code true} if softap stop was triggered 1008 * @throws SecurityException if the caller does not have permission to stop softap 1009 */ 1010 @Override 1011 public boolean stopSoftAp() { 1012 // NETWORK_STACK is a signature only permission. 1013 enforceNetworkStackPermission(); 1014 1015 // only permitted callers are allowed to this point - they must have gone through 1016 // connectivity service since this method is protected with the NETWORK_STACK PERMISSION 1017 1018 mLog.trace("stopSoftAp uid=%").c(Binder.getCallingUid()).flush(); 1019 1020 synchronized (mLocalOnlyHotspotRequests) { 1021 // If a tethering request comes in while we have LOHS running (or requested), call stop 1022 // for softap mode and restart softap with the tethering config. 1023 if (!mLocalOnlyHotspotRequests.isEmpty()) { 1024 mLog.trace("Call to stop Tethering while LOHS is active," 1025 + " Registered LOHS callers will be updated when softap stopped."); 1026 } 1027 1028 return stopSoftApInternal(); 1029 } 1030 } 1031 1032 /** 1033 * Internal method to stop softap mode. Callers of this method should have already checked 1034 * proper permissions beyond the NetworkStack permission. 1035 */ 1036 private boolean stopSoftApInternal() { 1037 mLog.trace("stopSoftApInternal uid=%").c(Binder.getCallingUid()).flush(); 1038 1039 mWifiController.sendMessage(CMD_SET_AP, 0, 0); 1040 return true; 1041 } 1042 1043 /** 1044 * Private method to handle SoftAp state changes 1045 */ 1046 private void handleWifiApStateChange( 1047 int currentState, int previousState, int errorCode, String ifaceName, int mode) { 1048 // The AP state update from WifiStateMachine for softap 1049 Slog.d(TAG, "handleWifiApStateChange: currentState=" + currentState 1050 + " previousState=" + previousState + " errorCode= " + errorCode 1051 + " ifaceName=" + ifaceName + " mode=" + mode); 1052 1053 // check if we have a failure - since it is possible (worst case scenario where 1054 // WifiController and WifiStateMachine are out of sync wrt modes) to get two FAILED 1055 // notifications in a row, we need to handle this first. 1056 if (currentState == WIFI_AP_STATE_FAILED) { 1057 // update registered LOHS callbacks if we see a failure 1058 synchronized (mLocalOnlyHotspotRequests) { 1059 int errorToReport = ERROR_GENERIC; 1060 if (errorCode == SAP_START_FAILURE_NO_CHANNEL) { 1061 errorToReport = ERROR_NO_CHANNEL; 1062 } 1063 // holding the required lock: send message to requestors and clear the list 1064 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( 1065 errorToReport); 1066 // also need to clear interface ip state - send null for now since we don't know 1067 // what interface (and we have one anyway) 1068 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 1069 } 1070 return; 1071 } 1072 1073 if (currentState == WIFI_AP_STATE_DISABLING || currentState == WIFI_AP_STATE_DISABLED) { 1074 // softap is shutting down or is down... let requestors know via the onStopped call 1075 synchronized (mLocalOnlyHotspotRequests) { 1076 // if we are currently in hotspot mode, then trigger onStopped for registered 1077 // requestors, otherwise something odd happened and we should clear state 1078 if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_LOCAL_ONLY)) { 1079 // holding the required lock: send message to requestors and clear the list 1080 sendHotspotStoppedMessageToAllLOHSRequestInfoEntriesLocked(); 1081 } else { 1082 // LOHS not active: report an error (still holding the required lock) 1083 sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked(ERROR_GENERIC); 1084 } 1085 // also clear interface ip state - send null for now since we don't know what 1086 // interface (and we only have one anyway) 1087 updateInterfaceIpState(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 1088 } 1089 return; 1090 } 1091 1092 // remaining states are enabling or enabled... those are not used for the callbacks 1093 } 1094 1095 /** 1096 * Helper method to send a HOTSPOT_FAILED message to all registered LocalOnlyHotspotRequest 1097 * callers and clear the registrations. 1098 * 1099 * Callers should already hold the mLocalOnlyHotspotRequests lock. 1100 */ 1101 private void sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked(int arg1) { 1102 for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { 1103 try { 1104 requestor.sendHotspotFailedMessage(arg1); 1105 requestor.unlinkDeathRecipient(); 1106 } catch (RemoteException e) { 1107 // This will be cleaned up by binder death handling 1108 } 1109 } 1110 1111 // Since all callers were notified, now clear the registrations. 1112 mLocalOnlyHotspotRequests.clear(); 1113 } 1114 1115 /** 1116 * Helper method to send a HOTSPOT_STOPPED message to all registered LocalOnlyHotspotRequest 1117 * callers and clear the registrations. 1118 * 1119 * Callers should already hold the mLocalOnlyHotspotRequests lock. 1120 */ 1121 private void sendHotspotStoppedMessageToAllLOHSRequestInfoEntriesLocked() { 1122 for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { 1123 try { 1124 requestor.sendHotspotStoppedMessage(); 1125 requestor.unlinkDeathRecipient(); 1126 } catch (RemoteException e) { 1127 // This will be cleaned up by binder death handling 1128 } 1129 } 1130 1131 // Since all callers were notified, now clear the registrations. 1132 mLocalOnlyHotspotRequests.clear(); 1133 } 1134 1135 /** 1136 * Helper method to send a HOTSPOT_STARTED message to all registered LocalOnlyHotspotRequest 1137 * callers. 1138 * 1139 * Callers should already hold the mLocalOnlyHotspotRequests lock. 1140 */ 1141 private void sendHotspotStartedMessageToAllLOHSRequestInfoEntriesLocked() { 1142 for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { 1143 try { 1144 requestor.sendHotspotStartedMessage(mLocalOnlyHotspotConfig); 1145 } catch (RemoteException e) { 1146 // This will be cleaned up by binder death handling 1147 } 1148 } 1149 } 1150 1151 /** 1152 * Temporary method used for testing while startLocalOnlyHotspot is not fully implemented. This 1153 * method allows unit tests to register callbacks directly for testing mechanisms triggered by 1154 * softap mode changes. 1155 */ 1156 @VisibleForTesting 1157 void registerLOHSForTest(int pid, LocalOnlyHotspotRequestInfo request) { 1158 mLocalOnlyHotspotRequests.put(pid, request); 1159 } 1160 1161 /** 1162 * Method to start LocalOnlyHotspot. In this method, permissions, settings and modes are 1163 * checked to verify that we can enter softapmode. This method returns 1164 * {@link LocalOnlyHotspotCallback#REQUEST_REGISTERED} if we will attempt to start, otherwise, 1165 * possible startup erros may include tethering being disallowed failure reason {@link 1166 * LocalOnlyHotspotCallback#ERROR_TETHERING_DISALLOWED} or an incompatible mode failure reason 1167 * {@link LocalOnlyHotspotCallback#ERROR_INCOMPATIBLE_MODE}. 1168 * 1169 * see {@link WifiManager#startLocalOnlyHotspot(LocalOnlyHotspotCallback)} 1170 * 1171 * @param messenger Messenger to send messages to the corresponding WifiManager. 1172 * @param binder IBinder instance to allow cleanup if the app dies 1173 * @param packageName String name of the calling package 1174 * 1175 * @return int return code for attempt to start LocalOnlyHotspot. 1176 * 1177 * @throws SecurityException if the caller does not have permission to start a Local Only 1178 * Hotspot. 1179 * @throws IllegalStateException if the caller attempts to start the LocalOnlyHotspot while they 1180 * have an outstanding request. 1181 */ 1182 @Override 1183 public int startLocalOnlyHotspot(Messenger messenger, IBinder binder, String packageName) { 1184 // first check if the caller has permission to start a local only hotspot 1185 // need to check for WIFI_STATE_CHANGE and location permission 1186 final int uid = Binder.getCallingUid(); 1187 final int pid = Binder.getCallingPid(); 1188 1189 enforceChangePermission(); 1190 enforceLocationPermission(packageName, uid); 1191 // also need to verify that Locations services are enabled. 1192 if (mSettingsStore.getLocationModeSetting(mContext) == Settings.Secure.LOCATION_MODE_OFF) { 1193 throw new SecurityException("Location mode is not enabled."); 1194 } 1195 1196 // verify that tethering is not disabled 1197 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 1198 return LocalOnlyHotspotCallback.ERROR_TETHERING_DISALLOWED; 1199 } 1200 1201 // the app should be in the foreground 1202 try { 1203 if (!mFrameworkFacade.isAppForeground(uid)) { 1204 return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE; 1205 } 1206 } catch (RemoteException e) { 1207 mLog.trace("RemoteException during isAppForeground when calling startLOHS"); 1208 return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE; 1209 } 1210 1211 mLog.trace("startLocalOnlyHotspot uid=% pid=%").c(uid).c(pid).flush(); 1212 1213 synchronized (mLocalOnlyHotspotRequests) { 1214 // check if we are currently tethering 1215 if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_TETHERED)) { 1216 // Tethering is enabled, cannot start LocalOnlyHotspot 1217 mLog.trace("Cannot start localOnlyHotspot when WiFi Tethering is active."); 1218 return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE; 1219 } 1220 1221 // does this caller already have a request? 1222 LocalOnlyHotspotRequestInfo request = mLocalOnlyHotspotRequests.get(pid); 1223 if (request != null) { 1224 mLog.trace("caller already has an active request"); 1225 throw new IllegalStateException( 1226 "Caller already has an active LocalOnlyHotspot request"); 1227 } 1228 1229 // now create the new LOHS request info object 1230 request = new LocalOnlyHotspotRequestInfo(binder, messenger, 1231 new LocalOnlyRequestorCallback()); 1232 1233 // check current operating state and take action if needed 1234 if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_LOCAL_ONLY)) { 1235 // LOHS is already active, send out what is running 1236 try { 1237 mLog.trace("LOHS already up, trigger onStarted callback"); 1238 request.sendHotspotStartedMessage(mLocalOnlyHotspotConfig); 1239 } catch (RemoteException e) { 1240 return LocalOnlyHotspotCallback.ERROR_GENERIC; 1241 } 1242 } else if (mLocalOnlyHotspotRequests.isEmpty()) { 1243 // this is the first request, then set up our config and start LOHS 1244 mLocalOnlyHotspotConfig = 1245 WifiApConfigStore.generateLocalOnlyHotspotConfig(mContext); 1246 startSoftApInternal(mLocalOnlyHotspotConfig, WifiManager.IFACE_IP_MODE_LOCAL_ONLY); 1247 } 1248 1249 mLocalOnlyHotspotRequests.put(pid, request); 1250 return LocalOnlyHotspotCallback.REQUEST_REGISTERED; 1251 } 1252 } 1253 1254 /** 1255 * see {@link WifiManager#stopLocalOnlyHotspot()} 1256 * 1257 * @throws SecurityException if the caller does not have permission to stop a Local Only 1258 * Hotspot. 1259 */ 1260 @Override 1261 public void stopLocalOnlyHotspot() { 1262 // first check if the caller has permission to stop a local only hotspot 1263 enforceChangePermission(); 1264 final int uid = Binder.getCallingUid(); 1265 final int pid = Binder.getCallingPid(); 1266 1267 mLog.trace("stopLocalOnlyHotspot uid=% pid=%").c(uid).c(pid).flush(); 1268 1269 synchronized (mLocalOnlyHotspotRequests) { 1270 // was the caller already registered? check request tracker - return false if not 1271 LocalOnlyHotspotRequestInfo requestInfo = mLocalOnlyHotspotRequests.get(pid); 1272 if (requestInfo == null) { 1273 return; 1274 } 1275 requestInfo.unlinkDeathRecipient(); 1276 unregisterCallingAppAndStopLocalOnlyHotspot(requestInfo); 1277 } // end synchronized 1278 } 1279 1280 /** 1281 * Helper method to unregister LocalOnlyHotspot requestors and stop the hotspot if needed. 1282 */ 1283 private void unregisterCallingAppAndStopLocalOnlyHotspot(LocalOnlyHotspotRequestInfo request) { 1284 mLog.trace("unregisterCallingAppAndStopLocalOnlyHotspot pid=%").c(request.getPid()).flush(); 1285 1286 synchronized (mLocalOnlyHotspotRequests) { 1287 if (mLocalOnlyHotspotRequests.remove(request.getPid()) == null) { 1288 mLog.trace("LocalOnlyHotspotRequestInfo not found to remove"); 1289 return; 1290 } 1291 1292 if (mLocalOnlyHotspotRequests.isEmpty()) { 1293 mLocalOnlyHotspotConfig = null; 1294 updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); 1295 // if that was the last caller, then call stopSoftAp as WifiService 1296 long identity = Binder.clearCallingIdentity(); 1297 try { 1298 stopSoftApInternal(); 1299 } finally { 1300 Binder.restoreCallingIdentity(identity); 1301 } 1302 } 1303 } 1304 } 1305 1306 /** 1307 * see {@link WifiManager#watchLocalOnlyHotspot(LocalOnlyHotspotObserver)} 1308 * 1309 * This call requires the android.permission.NETWORK_SETTINGS permission. 1310 * 1311 * @param messenger Messenger to send messages to the corresponding WifiManager. 1312 * @param binder IBinder instance to allow cleanup if the app dies 1313 * 1314 * @throws SecurityException if the caller does not have permission to watch Local Only Hotspot 1315 * status updates. 1316 * @throws IllegalStateException if the caller attempts to watch LocalOnlyHotspot updates with 1317 * an existing subscription. 1318 */ 1319 @Override 1320 public void startWatchLocalOnlyHotspot(Messenger messenger, IBinder binder) { 1321 final String packageName = mContext.getOpPackageName(); 1322 1323 // NETWORK_SETTINGS is a signature only permission. 1324 enforceNetworkSettingsPermission(); 1325 1326 throw new UnsupportedOperationException("LocalOnlyHotspot is still in development"); 1327 } 1328 1329 /** 1330 * see {@link WifiManager#unregisterLocalOnlyHotspotObserver()} 1331 */ 1332 @Override 1333 public void stopWatchLocalOnlyHotspot() { 1334 // NETWORK_STACK is a signature only permission. 1335 enforceNetworkSettingsPermission(); 1336 throw new UnsupportedOperationException("LocalOnlyHotspot is still in development"); 1337 } 1338 1339 /** 1340 * see {@link WifiManager#getWifiApConfiguration()} 1341 * @return soft access point configuration 1342 * @throws SecurityException if the caller does not have permission to retrieve the softap 1343 * config 1344 */ 1345 @Override 1346 public WifiConfiguration getWifiApConfiguration() { 1347 enforceAccessPermission(); 1348 int uid = Binder.getCallingUid(); 1349 // only allow Settings UI to get the saved SoftApConfig 1350 if (!mWifiPermissionsUtil.checkConfigOverridePermission(uid)) { 1351 // random apps should not be allowed to read the user specified config 1352 throw new SecurityException("App not allowed to read or update stored WiFi Ap config " 1353 + "(uid = " + uid + ")"); 1354 } 1355 mLog.trace("getWifiApConfiguration uid=%").c(uid).flush(); 1356 return mWifiStateMachine.syncGetWifiApConfiguration(); 1357 } 1358 1359 /** 1360 * see {@link WifiManager#setWifiApConfiguration(WifiConfiguration)} 1361 * @param wifiConfig WifiConfiguration details for soft access point 1362 * @throws SecurityException if the caller does not have permission to write the sotap config 1363 */ 1364 @Override 1365 public void setWifiApConfiguration(WifiConfiguration wifiConfig) { 1366 enforceChangePermission(); 1367 int uid = Binder.getCallingUid(); 1368 // only allow Settings UI to write the stored SoftApConfig 1369 if (!mWifiPermissionsUtil.checkConfigOverridePermission(uid)) { 1370 // random apps should not be allowed to read the user specified config 1371 throw new SecurityException("App not allowed to read or update stored WiFi AP config " 1372 + "(uid = " + uid + ")"); 1373 } 1374 mLog.trace("setWifiApConfiguration uid=%").c(uid).flush(); 1375 if (wifiConfig == null) 1376 return; 1377 if (isValid(wifiConfig)) { 1378 mWifiStateMachine.setWifiApConfiguration(wifiConfig); 1379 } else { 1380 Slog.e(TAG, "Invalid WifiConfiguration"); 1381 } 1382 } 1383 1384 /** 1385 * see {@link android.net.wifi.WifiManager#isScanAlwaysAvailable()} 1386 */ 1387 @Override 1388 public boolean isScanAlwaysAvailable() { 1389 enforceAccessPermission(); 1390 mLog.trace("isScanAlwaysAvailable uid=%").c(Binder.getCallingUid()).flush(); 1391 return mSettingsStore.isScanAlwaysAvailable(); 1392 } 1393 1394 /** 1395 * see {@link android.net.wifi.WifiManager#disconnect()} 1396 */ 1397 @Override 1398 public void disconnect() { 1399 enforceChangePermission(); 1400 mLog.trace("disconnect uid=%").c(Binder.getCallingUid()).flush(); 1401 mWifiStateMachine.disconnectCommand(); 1402 } 1403 1404 /** 1405 * see {@link android.net.wifi.WifiManager#reconnect()} 1406 */ 1407 @Override 1408 public void reconnect() { 1409 enforceChangePermission(); 1410 mLog.trace("reconnect uid=%").c(Binder.getCallingUid()).flush(); 1411 mWifiStateMachine.reconnectCommand(); 1412 } 1413 1414 /** 1415 * see {@link android.net.wifi.WifiManager#reassociate()} 1416 */ 1417 @Override 1418 public void reassociate() { 1419 enforceChangePermission(); 1420 mLog.trace("reassociate uid=%").c(Binder.getCallingUid()).flush(); 1421 mWifiStateMachine.reassociateCommand(); 1422 } 1423 1424 /** 1425 * see {@link android.net.wifi.WifiManager#getSupportedFeatures} 1426 */ 1427 @Override 1428 public int getSupportedFeatures() { 1429 enforceAccessPermission(); 1430 mLog.trace("getSupportedFeatures uid=%").c(Binder.getCallingUid()).flush(); 1431 if (mWifiStateMachineChannel != null) { 1432 return mWifiStateMachine.syncGetSupportedFeatures(mWifiStateMachineChannel); 1433 } else { 1434 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1435 return 0; 1436 } 1437 } 1438 1439 @Override 1440 public void requestActivityInfo(ResultReceiver result) { 1441 Bundle bundle = new Bundle(); 1442 mLog.trace("requestActivityInfo uid=%").c(Binder.getCallingUid()).flush(); 1443 bundle.putParcelable(BatteryStats.RESULT_RECEIVER_CONTROLLER_KEY, reportActivityInfo()); 1444 result.send(0, bundle); 1445 } 1446 1447 /** 1448 * see {@link android.net.wifi.WifiManager#getControllerActivityEnergyInfo(int)} 1449 */ 1450 @Override 1451 public WifiActivityEnergyInfo reportActivityInfo() { 1452 enforceAccessPermission(); 1453 mLog.trace("reportActivityInfo uid=%").c(Binder.getCallingUid()).flush(); 1454 if ((getSupportedFeatures() & WifiManager.WIFI_FEATURE_LINK_LAYER_STATS) == 0) { 1455 return null; 1456 } 1457 WifiLinkLayerStats stats; 1458 WifiActivityEnergyInfo energyInfo = null; 1459 if (mWifiStateMachineChannel != null) { 1460 stats = mWifiStateMachine.syncGetLinkLayerStats(mWifiStateMachineChannel); 1461 if (stats != null) { 1462 final long rxIdleCurrent = mContext.getResources().getInteger( 1463 com.android.internal.R.integer.config_wifi_idle_receive_cur_ma); 1464 final long rxCurrent = mContext.getResources().getInteger( 1465 com.android.internal.R.integer.config_wifi_active_rx_cur_ma); 1466 final long txCurrent = mContext.getResources().getInteger( 1467 com.android.internal.R.integer.config_wifi_tx_cur_ma); 1468 final double voltage = mContext.getResources().getInteger( 1469 com.android.internal.R.integer.config_wifi_operating_voltage_mv) 1470 / 1000.0; 1471 1472 final long rxIdleTime = stats.on_time - stats.tx_time - stats.rx_time; 1473 final long[] txTimePerLevel; 1474 if (stats.tx_time_per_level != null) { 1475 txTimePerLevel = new long[stats.tx_time_per_level.length]; 1476 for (int i = 0; i < txTimePerLevel.length; i++) { 1477 txTimePerLevel[i] = stats.tx_time_per_level[i]; 1478 // TODO(b/27227497): Need to read the power consumed per level from config 1479 } 1480 } else { 1481 // This will happen if the HAL get link layer API returned null. 1482 txTimePerLevel = new long[0]; 1483 } 1484 final long energyUsed = (long)((stats.tx_time * txCurrent + 1485 stats.rx_time * rxCurrent + 1486 rxIdleTime * rxIdleCurrent) * voltage); 1487 if (VDBG || rxIdleTime < 0 || stats.on_time < 0 || stats.tx_time < 0 || 1488 stats.rx_time < 0 || energyUsed < 0) { 1489 StringBuilder sb = new StringBuilder(); 1490 sb.append(" rxIdleCur=" + rxIdleCurrent); 1491 sb.append(" rxCur=" + rxCurrent); 1492 sb.append(" txCur=" + txCurrent); 1493 sb.append(" voltage=" + voltage); 1494 sb.append(" on_time=" + stats.on_time); 1495 sb.append(" tx_time=" + stats.tx_time); 1496 sb.append(" tx_time_per_level=" + Arrays.toString(txTimePerLevel)); 1497 sb.append(" rx_time=" + stats.rx_time); 1498 sb.append(" rxIdleTime=" + rxIdleTime); 1499 sb.append(" energy=" + energyUsed); 1500 Log.d(TAG, " reportActivityInfo: " + sb.toString()); 1501 } 1502 1503 // Convert the LinkLayerStats into EnergyActivity 1504 energyInfo = new WifiActivityEnergyInfo(mClock.getElapsedSinceBootMillis(), 1505 WifiActivityEnergyInfo.STACK_STATE_STATE_IDLE, stats.tx_time, 1506 txTimePerLevel, stats.rx_time, rxIdleTime, energyUsed); 1507 } 1508 if (energyInfo != null && energyInfo.isValid()) { 1509 return energyInfo; 1510 } else { 1511 return null; 1512 } 1513 } else { 1514 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1515 return null; 1516 } 1517 } 1518 1519 /** 1520 * see {@link android.net.wifi.WifiManager#getConfiguredNetworks()} 1521 * @return the list of configured networks 1522 */ 1523 @Override 1524 public ParceledListSlice<WifiConfiguration> getConfiguredNetworks() { 1525 enforceAccessPermission(); 1526 mLog.trace("getConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush(); 1527 if (mWifiStateMachineChannel != null) { 1528 List<WifiConfiguration> configs = mWifiStateMachine.syncGetConfiguredNetworks( 1529 Binder.getCallingUid(), mWifiStateMachineChannel); 1530 if (configs != null) { 1531 return new ParceledListSlice<WifiConfiguration>(configs); 1532 } 1533 } else { 1534 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1535 } 1536 return null; 1537 } 1538 1539 /** 1540 * see {@link android.net.wifi.WifiManager#getPrivilegedConfiguredNetworks()} 1541 * @return the list of configured networks with real preSharedKey 1542 */ 1543 @Override 1544 public ParceledListSlice<WifiConfiguration> getPrivilegedConfiguredNetworks() { 1545 enforceReadCredentialPermission(); 1546 enforceAccessPermission(); 1547 mLog.trace("getPrivilegedConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush(); 1548 if (mWifiStateMachineChannel != null) { 1549 List<WifiConfiguration> configs = 1550 mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel); 1551 if (configs != null) { 1552 return new ParceledListSlice<WifiConfiguration>(configs); 1553 } 1554 } else { 1555 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1556 } 1557 return null; 1558 } 1559 1560 /** 1561 * Returns a WifiConfiguration for a Passpoint network matching this ScanResult. 1562 * 1563 * @param scanResult scanResult that represents the BSSID 1564 * @return {@link WifiConfiguration} that matches this BSSID or null 1565 */ 1566 @Override 1567 public WifiConfiguration getMatchingWifiConfig(ScanResult scanResult) { 1568 enforceAccessPermission(); 1569 mLog.trace("getMatchingWifiConfig uid=%").c(Binder.getCallingUid()).flush(); 1570 if (!mContext.getPackageManager().hasSystemFeature( 1571 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1572 throw new UnsupportedOperationException("Passpoint not enabled"); 1573 } 1574 return mWifiStateMachine.syncGetMatchingWifiConfig(scanResult, mWifiStateMachineChannel); 1575 } 1576 1577 /** 1578 * Returns list of OSU (Online Sign-Up) providers associated with the given Passpoint network. 1579 * 1580 * @param scanResult scanResult of the Passpoint AP 1581 * @return List of {@link OsuProvider} 1582 */ 1583 @Override 1584 public List<OsuProvider> getMatchingOsuProviders(ScanResult scanResult) { 1585 enforceAccessPermission(); 1586 mLog.trace("getMatchingOsuProviders uid=%").c(Binder.getCallingUid()).flush(); 1587 if (!mContext.getPackageManager().hasSystemFeature( 1588 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1589 throw new UnsupportedOperationException("Passpoint not enabled"); 1590 } 1591 return mWifiStateMachine.syncGetMatchingOsuProviders(scanResult, mWifiStateMachineChannel); 1592 } 1593 1594 /** 1595 * see {@link android.net.wifi.WifiManager#addOrUpdateNetwork(WifiConfiguration)} 1596 * @return the supplicant-assigned identifier for the new or updated 1597 * network if the operation succeeds, or {@code -1} if it fails 1598 */ 1599 @Override 1600 public int addOrUpdateNetwork(WifiConfiguration config) { 1601 enforceChangePermission(); 1602 mLog.trace("addOrUpdateNetwork uid=%").c(Binder.getCallingUid()).flush(); 1603 1604 // Previously, this API is overloaded for installing Passpoint profiles. Now 1605 // that we have a dedicated API for doing it, redirect the call to the dedicated API. 1606 if (config.isPasspoint()) { 1607 PasspointConfiguration passpointConfig = 1608 PasspointProvider.convertFromWifiConfig(config); 1609 if (passpointConfig.getCredential() == null) { 1610 Slog.e(TAG, "Missing credential for Passpoint profile"); 1611 return -1; 1612 } 1613 // Copy over certificates and keys. 1614 passpointConfig.getCredential().setCaCertificate( 1615 config.enterpriseConfig.getCaCertificate()); 1616 passpointConfig.getCredential().setClientCertificateChain( 1617 config.enterpriseConfig.getClientCertificateChain()); 1618 passpointConfig.getCredential().setClientPrivateKey( 1619 config.enterpriseConfig.getClientPrivateKey()); 1620 if (!addOrUpdatePasspointConfiguration(passpointConfig)) { 1621 Slog.e(TAG, "Failed to add Passpoint profile"); 1622 return -1; 1623 } 1624 // There is no network ID associated with a Passpoint profile. 1625 return 0; 1626 } 1627 1628 if (config != null) { 1629 //TODO: pass the Uid the WifiStateMachine as a message parameter 1630 Slog.i("addOrUpdateNetwork", " uid = " + Integer.toString(Binder.getCallingUid()) 1631 + " SSID " + config.SSID 1632 + " nid=" + Integer.toString(config.networkId)); 1633 if (config.networkId == WifiConfiguration.INVALID_NETWORK_ID) { 1634 config.creatorUid = Binder.getCallingUid(); 1635 } else { 1636 config.lastUpdateUid = Binder.getCallingUid(); 1637 } 1638 if (mWifiStateMachineChannel != null) { 1639 return mWifiStateMachine.syncAddOrUpdateNetwork(mWifiStateMachineChannel, config); 1640 } else { 1641 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1642 return -1; 1643 } 1644 } else { 1645 Slog.e(TAG, "bad network configuration"); 1646 return -1; 1647 } 1648 } 1649 1650 public static void verifyCert(X509Certificate caCert) 1651 throws GeneralSecurityException, IOException { 1652 CertificateFactory factory = CertificateFactory.getInstance("X.509"); 1653 CertPathValidator validator = 1654 CertPathValidator.getInstance(CertPathValidator.getDefaultType()); 1655 CertPath path = factory.generateCertPath( 1656 Arrays.asList(caCert)); 1657 KeyStore ks = KeyStore.getInstance("AndroidCAStore"); 1658 ks.load(null, null); 1659 PKIXParameters params = new PKIXParameters(ks); 1660 params.setRevocationEnabled(false); 1661 validator.validate(path, params); 1662 } 1663 1664 /** 1665 * See {@link android.net.wifi.WifiManager#removeNetwork(int)} 1666 * @param netId the integer that identifies the network configuration 1667 * to the supplicant 1668 * @return {@code true} if the operation succeeded 1669 */ 1670 @Override 1671 public boolean removeNetwork(int netId) { 1672 enforceChangePermission(); 1673 mLog.trace("removeNetwork uid=%").c(Binder.getCallingUid()).flush(); 1674 // TODO Add private logging for netId b/33807876 1675 if (mWifiStateMachineChannel != null) { 1676 return mWifiStateMachine.syncRemoveNetwork(mWifiStateMachineChannel, netId); 1677 } else { 1678 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1679 return false; 1680 } 1681 } 1682 1683 /** 1684 * See {@link android.net.wifi.WifiManager#enableNetwork(int, boolean)} 1685 * @param netId the integer that identifies the network configuration 1686 * to the supplicant 1687 * @param disableOthers if true, disable all other networks. 1688 * @return {@code true} if the operation succeeded 1689 */ 1690 @Override 1691 public boolean enableNetwork(int netId, boolean disableOthers) { 1692 enforceChangePermission(); 1693 // TODO b/33807876 Log netId 1694 mLog.trace("enableNetwork uid=% disableOthers=%") 1695 .c(Binder.getCallingUid()) 1696 .c(disableOthers).flush(); 1697 1698 if (mWifiStateMachineChannel != null) { 1699 return mWifiStateMachine.syncEnableNetwork(mWifiStateMachineChannel, netId, 1700 disableOthers); 1701 } else { 1702 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1703 return false; 1704 } 1705 } 1706 1707 /** 1708 * See {@link android.net.wifi.WifiManager#disableNetwork(int)} 1709 * @param netId the integer that identifies the network configuration 1710 * to the supplicant 1711 * @return {@code true} if the operation succeeded 1712 */ 1713 @Override 1714 public boolean disableNetwork(int netId) { 1715 enforceChangePermission(); 1716 // TODO b/33807876 Log netId 1717 mLog.trace("disableNetwork uid=%").c(Binder.getCallingUid()).flush(); 1718 1719 if (mWifiStateMachineChannel != null) { 1720 return mWifiStateMachine.syncDisableNetwork(mWifiStateMachineChannel, netId); 1721 } else { 1722 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1723 return false; 1724 } 1725 } 1726 1727 /** 1728 * See {@link android.net.wifi.WifiManager#getConnectionInfo()} 1729 * @return the Wi-Fi information, contained in {@link WifiInfo}. 1730 */ 1731 @Override 1732 public WifiInfo getConnectionInfo() { 1733 enforceAccessPermission(); 1734 mLog.trace("getConnectionInfo uid=%").c(Binder.getCallingUid()).flush(); 1735 /* 1736 * Make sure we have the latest information, by sending 1737 * a status request to the supplicant. 1738 */ 1739 return mWifiStateMachine.syncRequestConnectionInfo(); 1740 } 1741 1742 /** 1743 * Return the results of the most recent access point scan, in the form of 1744 * a list of {@link ScanResult} objects. 1745 * @return the list of results 1746 */ 1747 @Override 1748 public List<ScanResult> getScanResults(String callingPackage) { 1749 enforceAccessPermission(); 1750 int uid = Binder.getCallingUid(); 1751 long ident = Binder.clearCallingIdentity(); 1752 try { 1753 if (!mWifiPermissionsUtil.canAccessScanResults(callingPackage, 1754 uid, Build.VERSION_CODES.M)) { 1755 return new ArrayList<ScanResult>(); 1756 } 1757 if (mWifiScanner == null) { 1758 mWifiScanner = mWifiInjector.getWifiScanner(); 1759 } 1760 return mWifiScanner.getSingleScanResults(); 1761 } finally { 1762 Binder.restoreCallingIdentity(ident); 1763 } 1764 } 1765 1766 /** 1767 * Add or update a Passpoint configuration. 1768 * 1769 * @param config The Passpoint configuration to be added 1770 * @return true on success or false on failure 1771 */ 1772 @Override 1773 public boolean addOrUpdatePasspointConfiguration(PasspointConfiguration config) { 1774 enforceChangePermission(); 1775 mLog.trace("addorUpdatePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush(); 1776 if (!mContext.getPackageManager().hasSystemFeature( 1777 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1778 throw new UnsupportedOperationException("Passpoint not enabled"); 1779 } 1780 return mWifiStateMachine.syncAddOrUpdatePasspointConfig(mWifiStateMachineChannel, config, 1781 Binder.getCallingUid()); 1782 } 1783 1784 /** 1785 * Remove the Passpoint configuration identified by its FQDN (Fully Qualified Domain Name). 1786 * 1787 * @param fqdn The FQDN of the Passpoint configuration to be removed 1788 * @return true on success or false on failure 1789 */ 1790 @Override 1791 public boolean removePasspointConfiguration(String fqdn) { 1792 enforceChangePermission(); 1793 mLog.trace("removePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush(); 1794 if (!mContext.getPackageManager().hasSystemFeature( 1795 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1796 throw new UnsupportedOperationException("Passpoint not enabled"); 1797 } 1798 return mWifiStateMachine.syncRemovePasspointConfig(mWifiStateMachineChannel, fqdn); 1799 } 1800 1801 /** 1802 * Return the list of the installed Passpoint configurations. 1803 * 1804 * An empty list will be returned when no configuration is installed. 1805 * 1806 * @return A list of {@link PasspointConfiguration} 1807 */ 1808 @Override 1809 public List<PasspointConfiguration> getPasspointConfigurations() { 1810 enforceAccessPermission(); 1811 mLog.trace("getPasspointConfigurations uid=%").c(Binder.getCallingUid()).flush(); 1812 if (!mContext.getPackageManager().hasSystemFeature( 1813 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1814 throw new UnsupportedOperationException("Passpoint not enabled"); 1815 } 1816 return mWifiStateMachine.syncGetPasspointConfigs(mWifiStateMachineChannel); 1817 } 1818 1819 /** 1820 * Query for a Hotspot 2.0 release 2 OSU icon 1821 * @param bssid The BSSID of the AP 1822 * @param fileName Icon file name 1823 */ 1824 @Override 1825 public void queryPasspointIcon(long bssid, String fileName) { 1826 enforceAccessPermission(); 1827 mLog.trace("queryPasspointIcon uid=%").c(Binder.getCallingUid()).flush(); 1828 if (!mContext.getPackageManager().hasSystemFeature( 1829 PackageManager.FEATURE_WIFI_PASSPOINT)) { 1830 throw new UnsupportedOperationException("Passpoint not enabled"); 1831 } 1832 mWifiStateMachine.syncQueryPasspointIcon(mWifiStateMachineChannel, bssid, fileName); 1833 } 1834 1835 /** 1836 * Match the currently associated network against the SP matching the given FQDN 1837 * @param fqdn FQDN of the SP 1838 * @return ordinal [HomeProvider, RoamingProvider, Incomplete, None, Declined] 1839 */ 1840 @Override 1841 public int matchProviderWithCurrentNetwork(String fqdn) { 1842 mLog.trace("matchProviderWithCurrentNetwork uid=%").c(Binder.getCallingUid()).flush(); 1843 return mWifiStateMachine.matchProviderWithCurrentNetwork(mWifiStateMachineChannel, fqdn); 1844 } 1845 1846 /** 1847 * Deauthenticate and set the re-authentication hold off time for the current network 1848 * @param holdoff hold off time in milliseconds 1849 * @param ess set if the hold off pertains to an ESS rather than a BSS 1850 */ 1851 @Override 1852 public void deauthenticateNetwork(long holdoff, boolean ess) { 1853 mLog.trace("deauthenticateNetwork uid=%").c(Binder.getCallingUid()).flush(); 1854 mWifiStateMachine.deauthenticateNetwork(mWifiStateMachineChannel, holdoff, ess); 1855 } 1856 1857 /** 1858 * Tell the supplicant to persist the current list of configured networks. 1859 * @return {@code true} if the operation succeeded 1860 * 1861 * TODO: deprecate this 1862 */ 1863 @Override 1864 public boolean saveConfiguration() { 1865 enforceChangePermission(); 1866 mLog.trace("saveConfiguration uid=%").c(Binder.getCallingUid()).flush(); 1867 if (mWifiStateMachineChannel != null) { 1868 return mWifiStateMachine.syncSaveConfig(mWifiStateMachineChannel); 1869 } else { 1870 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1871 return false; 1872 } 1873 } 1874 1875 /** 1876 * Set the country code 1877 * @param countryCode ISO 3166 country code. 1878 * @param persist {@code true} if the setting should be remembered. 1879 * 1880 * The persist behavior exists so that wifi can fall back to the last 1881 * persisted country code on a restart, when the locale information is 1882 * not available from telephony. 1883 */ 1884 @Override 1885 public void setCountryCode(String countryCode, boolean persist) { 1886 Slog.i(TAG, "WifiService trying to set country code to " + countryCode + 1887 " with persist set to " + persist); 1888 enforceConnectivityInternalPermission(); 1889 mLog.trace("setCountryCode uid=%").c(Binder.getCallingUid()).flush(); 1890 final long token = Binder.clearCallingIdentity(); 1891 mCountryCode.setCountryCode(countryCode); 1892 Binder.restoreCallingIdentity(token); 1893 } 1894 1895 /** 1896 * Get the country code 1897 * @return Get the best choice country code for wifi, regardless of if it was set or 1898 * not. 1899 * Returns null when there is no country code available. 1900 */ 1901 @Override 1902 public String getCountryCode() { 1903 enforceConnectivityInternalPermission(); 1904 mLog.trace("getCountryCode uid=%").c(Binder.getCallingUid()).flush(); 1905 String country = mCountryCode.getCountryCode(); 1906 return country; 1907 } 1908 1909 @Override 1910 public boolean isDualBandSupported() { 1911 //TODO: Should move towards adding a driver API that checks at runtime 1912 mLog.trace("isDualBandSupported uid=%").c(Binder.getCallingUid()).flush(); 1913 return mContext.getResources().getBoolean( 1914 com.android.internal.R.bool.config_wifi_dual_band_support); 1915 } 1916 1917 /** 1918 * Return the DHCP-assigned addresses from the last successful DHCP request, 1919 * if any. 1920 * @return the DHCP information 1921 * @deprecated 1922 */ 1923 @Override 1924 @Deprecated 1925 public DhcpInfo getDhcpInfo() { 1926 enforceAccessPermission(); 1927 mLog.trace("getDhcpInfo uid=%").c(Binder.getCallingUid()).flush(); 1928 DhcpResults dhcpResults = mWifiStateMachine.syncGetDhcpResults(); 1929 1930 DhcpInfo info = new DhcpInfo(); 1931 1932 if (dhcpResults.ipAddress != null && 1933 dhcpResults.ipAddress.getAddress() instanceof Inet4Address) { 1934 info.ipAddress = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.ipAddress.getAddress()); 1935 } 1936 1937 if (dhcpResults.gateway != null) { 1938 info.gateway = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.gateway); 1939 } 1940 1941 int dnsFound = 0; 1942 for (InetAddress dns : dhcpResults.dnsServers) { 1943 if (dns instanceof Inet4Address) { 1944 if (dnsFound == 0) { 1945 info.dns1 = NetworkUtils.inetAddressToInt((Inet4Address)dns); 1946 } else { 1947 info.dns2 = NetworkUtils.inetAddressToInt((Inet4Address)dns); 1948 } 1949 if (++dnsFound > 1) break; 1950 } 1951 } 1952 Inet4Address serverAddress = dhcpResults.serverAddress; 1953 if (serverAddress != null) { 1954 info.serverAddress = NetworkUtils.inetAddressToInt(serverAddress); 1955 } 1956 info.leaseDuration = dhcpResults.leaseDuration; 1957 1958 return info; 1959 } 1960 1961 /** 1962 * enable TDLS for the local NIC to remote NIC 1963 * The APPs don't know the remote MAC address to identify NIC though, 1964 * so we need to do additional work to find it from remote IP address 1965 */ 1966 1967 class TdlsTaskParams { 1968 public String remoteIpAddress; 1969 public boolean enable; 1970 } 1971 1972 class TdlsTask extends AsyncTask<TdlsTaskParams, Integer, Integer> { 1973 @Override 1974 protected Integer doInBackground(TdlsTaskParams... params) { 1975 1976 // Retrieve parameters for the call 1977 TdlsTaskParams param = params[0]; 1978 String remoteIpAddress = param.remoteIpAddress.trim(); 1979 boolean enable = param.enable; 1980 1981 // Get MAC address of Remote IP 1982 String macAddress = null; 1983 1984 BufferedReader reader = null; 1985 1986 try { 1987 reader = new BufferedReader(new FileReader("/proc/net/arp")); 1988 1989 // Skip over the line bearing colum titles 1990 String line = reader.readLine(); 1991 1992 while ((line = reader.readLine()) != null) { 1993 String[] tokens = line.split("[ ]+"); 1994 if (tokens.length < 6) { 1995 continue; 1996 } 1997 1998 // ARP column format is 1999 // Address HWType HWAddress Flags Mask IFace 2000 String ip = tokens[0]; 2001 String mac = tokens[3]; 2002 2003 if (remoteIpAddress.equals(ip)) { 2004 macAddress = mac; 2005 break; 2006 } 2007 } 2008 2009 if (macAddress == null) { 2010 Slog.w(TAG, "Did not find remoteAddress {" + remoteIpAddress + "} in " + 2011 "/proc/net/arp"); 2012 } else { 2013 enableTdlsWithMacAddress(macAddress, enable); 2014 } 2015 2016 } catch (FileNotFoundException e) { 2017 Slog.e(TAG, "Could not open /proc/net/arp to lookup mac address"); 2018 } catch (IOException e) { 2019 Slog.e(TAG, "Could not read /proc/net/arp to lookup mac address"); 2020 } finally { 2021 try { 2022 if (reader != null) { 2023 reader.close(); 2024 } 2025 } 2026 catch (IOException e) { 2027 // Do nothing 2028 } 2029 } 2030 2031 return 0; 2032 } 2033 } 2034 2035 @Override 2036 public void enableTdls(String remoteAddress, boolean enable) { 2037 if (remoteAddress == null) { 2038 throw new IllegalArgumentException("remoteAddress cannot be null"); 2039 } 2040 mLog.trace("enableTdls uid=% enable=%").c(Binder.getCallingUid()).c(enable).flush(); 2041 TdlsTaskParams params = new TdlsTaskParams(); 2042 params.remoteIpAddress = remoteAddress; 2043 params.enable = enable; 2044 new TdlsTask().execute(params); 2045 } 2046 2047 2048 @Override 2049 public void enableTdlsWithMacAddress(String remoteMacAddress, boolean enable) { 2050 mLog.trace("enableTdlsWithMacAddress uid=% enable=%") 2051 .c(Binder.getCallingUid()) 2052 .c(enable) 2053 .flush(); 2054 if (remoteMacAddress == null) { 2055 throw new IllegalArgumentException("remoteMacAddress cannot be null"); 2056 } 2057 2058 mWifiStateMachine.enableTdls(remoteMacAddress, enable); 2059 } 2060 2061 /** 2062 * Get a reference to handler. This is used by a client to establish 2063 * an AsyncChannel communication with WifiService 2064 */ 2065 @Override 2066 public Messenger getWifiServiceMessenger() { 2067 enforceAccessPermission(); 2068 enforceChangePermission(); 2069 mLog.trace("getWifiServiceMessenger uid=%").c(Binder.getCallingUid()).flush(); 2070 return new Messenger(mClientHandler); 2071 } 2072 2073 /** 2074 * Disable an ephemeral network, i.e. network that is created thru a WiFi Scorer 2075 */ 2076 @Override 2077 public void disableEphemeralNetwork(String SSID) { 2078 enforceAccessPermission(); 2079 enforceChangePermission(); 2080 mLog.trace("disableEphemeralNetwork uid=%").c(Binder.getCallingUid()).flush(); 2081 mWifiStateMachine.disableEphemeralNetwork(SSID); 2082 } 2083 2084 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 2085 @Override 2086 public void onReceive(Context context, Intent intent) { 2087 String action = intent.getAction(); 2088 if (action.equals(Intent.ACTION_SCREEN_ON)) { 2089 mWifiController.sendMessage(CMD_SCREEN_ON); 2090 } else if (action.equals(Intent.ACTION_USER_PRESENT)) { 2091 mWifiController.sendMessage(CMD_USER_PRESENT); 2092 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 2093 mWifiController.sendMessage(CMD_SCREEN_OFF); 2094 } else if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { 2095 int pluggedType = intent.getIntExtra("plugged", 0); 2096 mWifiController.sendMessage(CMD_BATTERY_CHANGED, pluggedType, 0, null); 2097 } else if (action.equals(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED)) { 2098 int state = intent.getIntExtra(BluetoothAdapter.EXTRA_CONNECTION_STATE, 2099 BluetoothAdapter.STATE_DISCONNECTED); 2100 mWifiStateMachine.sendBluetoothAdapterStateChange(state); 2101 } else if (action.equals(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED)) { 2102 boolean emergencyMode = intent.getBooleanExtra("phoneinECMState", false); 2103 mWifiController.sendMessage(CMD_EMERGENCY_MODE_CHANGED, emergencyMode ? 1 : 0, 0); 2104 } else if (action.equals(TelephonyIntents.ACTION_EMERGENCY_CALL_STATE_CHANGED)) { 2105 boolean inCall = intent.getBooleanExtra(PhoneConstants.PHONE_IN_EMERGENCY_CALL, false); 2106 mWifiController.sendMessage(CMD_EMERGENCY_CALL_STATE_CHANGED, inCall ? 1 : 0, 0); 2107 } else if (action.equals(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED)) { 2108 handleIdleModeChanged(); 2109 } 2110 } 2111 }; 2112 2113 private boolean startConsentUi(String packageName, 2114 int callingUid, String intentAction) throws RemoteException { 2115 if (UserHandle.getAppId(callingUid) == Process.SYSTEM_UID) { 2116 return false; 2117 } 2118 try { 2119 // Validate the package only if we are going to use it 2120 ApplicationInfo applicationInfo = mContext.getPackageManager() 2121 .getApplicationInfoAsUser(packageName, 2122 PackageManager.MATCH_DEBUG_TRIAGED_MISSING, 2123 UserHandle.getUserId(callingUid)); 2124 if (applicationInfo.uid != callingUid) { 2125 throw new SecurityException("Package " + callingUid 2126 + " not in uid " + callingUid); 2127 } 2128 2129 // Permission review mode, trigger a user prompt 2130 Intent intent = new Intent(intentAction); 2131 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK 2132 | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 2133 intent.putExtra(Intent.EXTRA_PACKAGE_NAME, packageName); 2134 mContext.startActivity(intent); 2135 return true; 2136 } catch (PackageManager.NameNotFoundException e) { 2137 throw new RemoteException(e.getMessage()); 2138 } 2139 } 2140 2141 /** 2142 * Observes settings changes to scan always mode. 2143 */ 2144 private void registerForScanModeChange() { 2145 ContentObserver contentObserver = new ContentObserver(null) { 2146 @Override 2147 public void onChange(boolean selfChange) { 2148 mSettingsStore.handleWifiScanAlwaysAvailableToggled(); 2149 mWifiController.sendMessage(CMD_SCAN_ALWAYS_MODE_CHANGED); 2150 } 2151 }; 2152 mFrameworkFacade.registerContentObserver(mContext, 2153 Settings.Global.getUriFor(Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE), 2154 false, contentObserver); 2155 2156 } 2157 2158 // Monitors settings changes related to background wifi scan throttling. 2159 private void registerForBackgroundThrottleChanges() { 2160 mFrameworkFacade.registerContentObserver( 2161 mContext, 2162 Settings.Global.getUriFor( 2163 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS), 2164 false, 2165 new ContentObserver(null) { 2166 @Override 2167 public void onChange(boolean selfChange) { 2168 updateBackgroundThrottleInterval(); 2169 } 2170 } 2171 ); 2172 mFrameworkFacade.registerContentObserver( 2173 mContext, 2174 Settings.Global.getUriFor( 2175 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_PACKAGE_WHITELIST), 2176 false, 2177 new ContentObserver(null) { 2178 @Override 2179 public void onChange(boolean selfChange) { 2180 updateBackgroundThrottlingWhitelist(); 2181 } 2182 } 2183 ); 2184 } 2185 2186 private void updateBackgroundThrottleInterval() { 2187 mBackgroundThrottleInterval = mFrameworkFacade.getLongSetting( 2188 mContext, 2189 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS, 2190 DEFAULT_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS); 2191 } 2192 2193 private void updateBackgroundThrottlingWhitelist() { 2194 String setting = mFrameworkFacade.getStringSetting( 2195 mContext, 2196 Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_PACKAGE_WHITELIST); 2197 mBackgroundThrottlePackageWhitelist.clear(); 2198 if (setting != null) { 2199 mBackgroundThrottlePackageWhitelist.addAll(Arrays.asList(setting.split(","))); 2200 } 2201 } 2202 2203 private void registerForBroadcasts() { 2204 IntentFilter intentFilter = new IntentFilter(); 2205 intentFilter.addAction(Intent.ACTION_SCREEN_ON); 2206 intentFilter.addAction(Intent.ACTION_USER_PRESENT); 2207 intentFilter.addAction(Intent.ACTION_SCREEN_OFF); 2208 intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED); 2209 intentFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 2210 intentFilter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED); 2211 intentFilter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED); 2212 intentFilter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED); 2213 2214 boolean trackEmergencyCallState = mContext.getResources().getBoolean( 2215 com.android.internal.R.bool.config_wifi_turn_off_during_emergency_call); 2216 if (trackEmergencyCallState) { 2217 intentFilter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALL_STATE_CHANGED); 2218 } 2219 2220 mContext.registerReceiver(mReceiver, intentFilter); 2221 } 2222 2223 private void registerForPackageOrUserRemoval() { 2224 IntentFilter intentFilter = new IntentFilter(); 2225 intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); 2226 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 2227 mContext.registerReceiverAsUser(new BroadcastReceiver() { 2228 @Override 2229 public void onReceive(Context context, Intent intent) { 2230 switch (intent.getAction()) { 2231 case Intent.ACTION_PACKAGE_REMOVED: { 2232 if (intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) { 2233 return; 2234 } 2235 int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); 2236 Uri uri = intent.getData(); 2237 if (uid == -1 || uri == null) { 2238 return; 2239 } 2240 String pkgName = uri.getSchemeSpecificPart(); 2241 mWifiStateMachine.removeAppConfigs(pkgName, uid); 2242 break; 2243 } 2244 case Intent.ACTION_USER_REMOVED: { 2245 int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); 2246 mWifiStateMachine.removeUserConfigs(userHandle); 2247 break; 2248 } 2249 } 2250 } 2251 }, UserHandle.ALL, intentFilter, null, null); 2252 } 2253 2254 @Override 2255 public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err, 2256 String[] args, ShellCallback callback, ResultReceiver resultReceiver) { 2257 (new WifiShellCommand(mWifiStateMachine)).exec(this, in, out, err, args, callback, 2258 resultReceiver); 2259 } 2260 2261 @Override 2262 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2263 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2264 != PackageManager.PERMISSION_GRANTED) { 2265 pw.println("Permission Denial: can't dump WifiService from from pid=" 2266 + Binder.getCallingPid() 2267 + ", uid=" + Binder.getCallingUid()); 2268 return; 2269 } 2270 if (args != null && args.length > 0 && WifiMetrics.PROTO_DUMP_ARG.equals(args[0])) { 2271 // WifiMetrics proto bytes were requested. Dump only these. 2272 mWifiStateMachine.updateWifiMetrics(); 2273 mWifiMetrics.dump(fd, pw, args); 2274 } else if (args != null && args.length > 0 && IpManager.DUMP_ARG.equals(args[0])) { 2275 // IpManager dump was requested. Pass it along and take no further action. 2276 String[] ipManagerArgs = new String[args.length - 1]; 2277 System.arraycopy(args, 1, ipManagerArgs, 0, ipManagerArgs.length); 2278 mWifiStateMachine.dumpIpManager(fd, pw, ipManagerArgs); 2279 } else if (args != null && args.length > 0 && WifiScoreReport.DUMP_ARG.equals(args[0])) { 2280 WifiScoreReport wifiScoreReport = mWifiStateMachine.getWifiScoreReport(); 2281 if (wifiScoreReport != null) wifiScoreReport.dump(fd, pw, args); 2282 } else { 2283 pw.println("Wi-Fi is " + mWifiStateMachine.syncGetWifiStateByName()); 2284 pw.println("Stay-awake conditions: " + 2285 mFacade.getIntegerSetting(mContext, 2286 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 0)); 2287 pw.println("mInIdleMode " + mInIdleMode); 2288 pw.println("mScanPending " + mScanPending); 2289 mWifiController.dump(fd, pw, args); 2290 mSettingsStore.dump(fd, pw, args); 2291 mTrafficPoller.dump(fd, pw, args); 2292 pw.println(); 2293 pw.println("Locks held:"); 2294 mWifiLockManager.dump(pw); 2295 pw.println(); 2296 mWifiMulticastLockManager.dump(pw); 2297 pw.println(); 2298 mWifiStateMachine.dump(fd, pw, args); 2299 pw.println(); 2300 mWifiStateMachine.updateWifiMetrics(); 2301 mWifiMetrics.dump(fd, pw, args); 2302 pw.println(); 2303 mWifiBackupRestore.dump(fd, pw, args); 2304 pw.println(); 2305 WifiScoreReport wifiScoreReport = mWifiStateMachine.getWifiScoreReport(); 2306 if (wifiScoreReport != null) { 2307 pw.println("WifiScoreReport:"); 2308 wifiScoreReport.dump(fd, pw, args); 2309 } 2310 pw.println(); 2311 } 2312 } 2313 2314 @Override 2315 public boolean acquireWifiLock(IBinder binder, int lockMode, String tag, WorkSource ws) { 2316 mLog.trace("acquireWifiLock uid=% lockMode=%") 2317 .c(Binder.getCallingUid()) 2318 .c(lockMode).flush(); 2319 if (mWifiLockManager.acquireWifiLock(lockMode, tag, binder, ws)) { 2320 mWifiController.sendMessage(CMD_LOCKS_CHANGED); 2321 return true; 2322 } 2323 return false; 2324 } 2325 2326 @Override 2327 public void updateWifiLockWorkSource(IBinder binder, WorkSource ws) { 2328 mLog.trace("updateWifiLockWorkSource uid=%").c(Binder.getCallingUid()).flush(); 2329 mWifiLockManager.updateWifiLockWorkSource(binder, ws); 2330 } 2331 2332 @Override 2333 public boolean releaseWifiLock(IBinder binder) { 2334 mLog.trace("releaseWifiLock uid=%").c(Binder.getCallingUid()).flush(); 2335 if (mWifiLockManager.releaseWifiLock(binder)) { 2336 mWifiController.sendMessage(CMD_LOCKS_CHANGED); 2337 return true; 2338 } 2339 return false; 2340 } 2341 2342 @Override 2343 public void initializeMulticastFiltering() { 2344 enforceMulticastChangePermission(); 2345 mLog.trace("initializeMulticastFiltering uid=%").c(Binder.getCallingUid()).flush(); 2346 mWifiMulticastLockManager.initializeFiltering(); 2347 } 2348 2349 @Override 2350 public void acquireMulticastLock(IBinder binder, String tag) { 2351 enforceMulticastChangePermission(); 2352 mLog.trace("acquireMulticastLock uid=%").c(Binder.getCallingUid()).flush(); 2353 mWifiMulticastLockManager.acquireLock(binder, tag); 2354 } 2355 2356 @Override 2357 public void releaseMulticastLock() { 2358 enforceMulticastChangePermission(); 2359 mLog.trace("releaseMulticastLock uid=%").c(Binder.getCallingUid()).flush(); 2360 mWifiMulticastLockManager.releaseLock(); 2361 } 2362 2363 @Override 2364 public boolean isMulticastEnabled() { 2365 enforceAccessPermission(); 2366 mLog.trace("isMulticastEnabled uid=%").c(Binder.getCallingUid()).flush(); 2367 return mWifiMulticastLockManager.isMulticastEnabled(); 2368 } 2369 2370 @Override 2371 public void enableVerboseLogging(int verbose) { 2372 enforceAccessPermission(); 2373 mLog.trace("enableVerboseLogging uid=% verbose=%") 2374 .c(Binder.getCallingUid()) 2375 .c(verbose).flush(); 2376 mFacade.setIntegerSetting( 2377 mContext, Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, verbose); 2378 enableVerboseLoggingInternal(verbose); 2379 } 2380 2381 void enableVerboseLoggingInternal(int verbose) { 2382 mWifiStateMachine.enableVerboseLogging(verbose); 2383 mWifiLockManager.enableVerboseLogging(verbose); 2384 mWifiMulticastLockManager.enableVerboseLogging(verbose); 2385 mWifiInjector.getWifiLastResortWatchdog().enableVerboseLogging(verbose); 2386 mWifiInjector.getWifiBackupRestore().enableVerboseLogging(verbose); 2387 LogcatLog.enableVerboseLogging(verbose); 2388 } 2389 2390 @Override 2391 public int getVerboseLoggingLevel() { 2392 enforceAccessPermission(); 2393 mLog.trace("getVerboseLoggingLevel uid=%").c(Binder.getCallingUid()).flush(); 2394 return mFacade.getIntegerSetting( 2395 mContext, Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, 0); 2396 } 2397 2398 @Override 2399 public void enableAggressiveHandover(int enabled) { 2400 enforceAccessPermission(); 2401 mLog.trace("enableAggressiveHandover uid=% enabled=%") 2402 .c(Binder.getCallingUid()) 2403 .c(enabled) 2404 .flush(); 2405 mWifiStateMachine.enableAggressiveHandover(enabled); 2406 } 2407 2408 @Override 2409 public int getAggressiveHandover() { 2410 enforceAccessPermission(); 2411 mLog.trace("getAggressiveHandover uid=%").c(Binder.getCallingUid()).flush(); 2412 return mWifiStateMachine.getAggressiveHandover(); 2413 } 2414 2415 @Override 2416 public void setAllowScansWithTraffic(int enabled) { 2417 enforceAccessPermission(); 2418 mLog.trace("setAllowScansWithTraffic uid=% enabled=%") 2419 .c(Binder.getCallingUid()) 2420 .c(enabled).flush(); 2421 mWifiStateMachine.setAllowScansWithTraffic(enabled); 2422 } 2423 2424 @Override 2425 public int getAllowScansWithTraffic() { 2426 enforceAccessPermission(); 2427 mLog.trace("getAllowScansWithTraffic uid=%").c(Binder.getCallingUid()).flush(); 2428 return mWifiStateMachine.getAllowScansWithTraffic(); 2429 } 2430 2431 @Override 2432 public boolean setEnableAutoJoinWhenAssociated(boolean enabled) { 2433 enforceChangePermission(); 2434 mLog.trace("setEnableAutoJoinWhenAssociated uid=% enabled=%") 2435 .c(Binder.getCallingUid()) 2436 .c(enabled).flush(); 2437 return mWifiStateMachine.setEnableAutoJoinWhenAssociated(enabled); 2438 } 2439 2440 @Override 2441 public boolean getEnableAutoJoinWhenAssociated() { 2442 enforceAccessPermission(); 2443 mLog.trace("getEnableAutoJoinWhenAssociated uid=%").c(Binder.getCallingUid()).flush(); 2444 return mWifiStateMachine.getEnableAutoJoinWhenAssociated(); 2445 } 2446 2447 /* Return the Wifi Connection statistics object */ 2448 @Override 2449 public WifiConnectionStatistics getConnectionStatistics() { 2450 enforceAccessPermission(); 2451 enforceReadCredentialPermission(); 2452 mLog.trace("getConnectionStatistics uid=%").c(Binder.getCallingUid()).flush(); 2453 if (mWifiStateMachineChannel != null) { 2454 return mWifiStateMachine.syncGetConnectionStatistics(mWifiStateMachineChannel); 2455 } else { 2456 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2457 return null; 2458 } 2459 } 2460 2461 @Override 2462 public void factoryReset() { 2463 enforceConnectivityInternalPermission(); 2464 mLog.trace("factoryReset uid=%").c(Binder.getCallingUid()).flush(); 2465 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 2466 return; 2467 } 2468 2469 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 2470 // Turn mobile hotspot off - will also clear any registered LOHS requests when it is 2471 // shut down 2472 stopSoftApInternal(); 2473 } 2474 2475 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_WIFI)) { 2476 // Enable wifi 2477 try { 2478 setWifiEnabled(mContext.getOpPackageName(), true); 2479 } catch (RemoteException e) { 2480 /* ignore - local call */ 2481 } 2482 // Delete all Wifi SSIDs 2483 if (mWifiStateMachineChannel != null) { 2484 List<WifiConfiguration> networks = mWifiStateMachine.syncGetConfiguredNetworks( 2485 Binder.getCallingUid(), mWifiStateMachineChannel); 2486 if (networks != null) { 2487 for (WifiConfiguration config : networks) { 2488 removeNetwork(config.networkId); 2489 } 2490 saveConfiguration(); 2491 } 2492 } 2493 } 2494 } 2495 2496 /* private methods */ 2497 static boolean logAndReturnFalse(String s) { 2498 Log.d(TAG, s); 2499 return false; 2500 } 2501 2502 public static boolean isValid(WifiConfiguration config) { 2503 String validity = checkValidity(config); 2504 return validity == null || logAndReturnFalse(validity); 2505 } 2506 2507 public static String checkValidity(WifiConfiguration config) { 2508 if (config.allowedKeyManagement == null) 2509 return "allowed kmgmt"; 2510 2511 if (config.allowedKeyManagement.cardinality() > 1) { 2512 if (config.allowedKeyManagement.cardinality() != 2) { 2513 return "cardinality != 2"; 2514 } 2515 if (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_EAP)) { 2516 return "not WPA_EAP"; 2517 } 2518 if ((!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.IEEE8021X)) 2519 && (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK))) { 2520 return "not PSK or 8021X"; 2521 } 2522 } 2523 if (config.getIpAssignment() == IpConfiguration.IpAssignment.STATIC) { 2524 StaticIpConfiguration staticIpConf = config.getStaticIpConfiguration(); 2525 if (staticIpConf == null) { 2526 return "null StaticIpConfiguration"; 2527 } 2528 if (staticIpConf.ipAddress == null) { 2529 return "null static ip Address"; 2530 } 2531 } 2532 return null; 2533 } 2534 2535 @Override 2536 public Network getCurrentNetwork() { 2537 enforceAccessPermission(); 2538 mLog.trace("getCurrentNetwork uid=%").c(Binder.getCallingUid()).flush(); 2539 return mWifiStateMachine.getCurrentNetwork(); 2540 } 2541 2542 public static String toHexString(String s) { 2543 if (s == null) { 2544 return "null"; 2545 } 2546 StringBuilder sb = new StringBuilder(); 2547 sb.append('\'').append(s).append('\''); 2548 for (int n = 0; n < s.length(); n++) { 2549 sb.append(String.format(" %02x", s.charAt(n) & 0xffff)); 2550 } 2551 return sb.toString(); 2552 } 2553 2554 public void hideCertFromUnaffiliatedUsers(String alias) { 2555 mCertManager.hideCertFromUnaffiliatedUsers(alias); 2556 } 2557 2558 public String[] listClientCertsForCurrentUser() { 2559 return mCertManager.listClientCertsForCurrentUser(); 2560 } 2561 2562 /** 2563 * Enable/disable WifiConnectivityManager at runtime 2564 * 2565 * @param enabled true-enable; false-disable 2566 */ 2567 @Override 2568 public void enableWifiConnectivityManager(boolean enabled) { 2569 enforceConnectivityInternalPermission(); 2570 mLog.trace("enableWifiConnectivityManager uid=% enabled=%") 2571 .c(Binder.getCallingUid()) 2572 .c(enabled).flush(); 2573 mWifiStateMachine.enableWifiConnectivityManager(enabled); 2574 } 2575 2576 /** 2577 * Retrieve the data to be backed to save the current state. 2578 * 2579 * @return Raw byte stream of the data to be backed up. 2580 */ 2581 @Override 2582 public byte[] retrieveBackupData() { 2583 enforceNetworkSettingsPermission(); 2584 mLog.trace("retrieveBackupData uid=%").c(Binder.getCallingUid()).flush(); 2585 if (mWifiStateMachineChannel == null) { 2586 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2587 return null; 2588 } 2589 2590 Slog.d(TAG, "Retrieving backup data"); 2591 List<WifiConfiguration> wifiConfigurations = 2592 mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel); 2593 byte[] backupData = 2594 mWifiBackupRestore.retrieveBackupDataFromConfigurations(wifiConfigurations); 2595 Slog.d(TAG, "Retrieved backup data"); 2596 return backupData; 2597 } 2598 2599 /** 2600 * Helper method to restore networks retrieved from backup data. 2601 * 2602 * @param configurations list of WifiConfiguration objects parsed from the backup data. 2603 */ 2604 private void restoreNetworks(List<WifiConfiguration> configurations) { 2605 if (configurations == null) { 2606 Slog.e(TAG, "Backup data parse failed"); 2607 return; 2608 } 2609 for (WifiConfiguration configuration : configurations) { 2610 int networkId = mWifiStateMachine.syncAddOrUpdateNetwork( 2611 mWifiStateMachineChannel, configuration); 2612 if (networkId == WifiConfiguration.INVALID_NETWORK_ID) { 2613 Slog.e(TAG, "Restore network failed: " + configuration.configKey()); 2614 continue; 2615 } 2616 // Enable all networks restored. 2617 mWifiStateMachine.syncEnableNetwork(mWifiStateMachineChannel, networkId, false); 2618 } 2619 } 2620 2621 /** 2622 * Restore state from the backed up data. 2623 * 2624 * @param data Raw byte stream of the backed up data. 2625 */ 2626 @Override 2627 public void restoreBackupData(byte[] data) { 2628 enforceNetworkSettingsPermission(); 2629 mLog.trace("restoreBackupData uid=%").c(Binder.getCallingUid()).flush(); 2630 if (mWifiStateMachineChannel == null) { 2631 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2632 return; 2633 } 2634 2635 Slog.d(TAG, "Restoring backup data"); 2636 List<WifiConfiguration> wifiConfigurations = 2637 mWifiBackupRestore.retrieveConfigurationsFromBackupData(data); 2638 restoreNetworks(wifiConfigurations); 2639 Slog.d(TAG, "Restored backup data"); 2640 } 2641 2642 /** 2643 * Restore state from the older supplicant back up data. 2644 * The old backup data was essentially a backup of wpa_supplicant.conf & ipconfig.txt file. 2645 * 2646 * @param supplicantData Raw byte stream of wpa_supplicant.conf 2647 * @param ipConfigData Raw byte stream of ipconfig.txt 2648 */ 2649 public void restoreSupplicantBackupData(byte[] supplicantData, byte[] ipConfigData) { 2650 enforceNetworkSettingsPermission(); 2651 mLog.trace("restoreSupplicantBackupData uid=%").c(Binder.getCallingUid()).flush(); 2652 if (mWifiStateMachineChannel == null) { 2653 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 2654 return; 2655 } 2656 2657 Slog.d(TAG, "Restoring supplicant backup data"); 2658 List<WifiConfiguration> wifiConfigurations = 2659 mWifiBackupRestore.retrieveConfigurationsFromSupplicantBackupData( 2660 supplicantData, ipConfigData); 2661 restoreNetworks(wifiConfigurations); 2662 Slog.d(TAG, "Restored supplicant backup data"); 2663 } 2664} 2665