WifiServiceImpl.java revision 8be2ac8cec40a2000715849b627642bdc87c10b3
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 android.Manifest; 20import android.app.ActivityManager; 21import android.app.AppOpsManager; 22import android.bluetooth.BluetoothAdapter; 23import android.content.BroadcastReceiver; 24import android.content.Context; 25import android.content.Intent; 26import android.content.IntentFilter; 27import android.content.pm.PackageManager; 28import android.content.pm.UserInfo; 29import android.database.ContentObserver; 30import android.net.ConnectivityManager; 31import android.net.DhcpInfo; 32import android.net.DhcpResults; 33import android.net.Network; 34import android.net.NetworkScorerAppManager; 35import android.net.NetworkUtils; 36import android.net.Uri; 37import android.net.wifi.BatchedScanResult; 38import android.net.wifi.BatchedScanSettings; 39import android.net.wifi.IWifiManager; 40import android.net.wifi.ScanResult; 41import android.net.wifi.ScanSettings; 42import android.net.wifi.WifiActivityEnergyInfo; 43import android.net.wifi.WifiChannel; 44import android.net.wifi.WifiConfiguration; 45import android.net.wifi.WifiConnectionStatistics; 46import android.net.wifi.WifiEnterpriseConfig; 47import android.net.wifi.WifiInfo; 48import android.net.wifi.WifiLinkLayerStats; 49import android.net.wifi.WifiManager; 50import android.os.AsyncTask; 51import android.os.Binder; 52import android.os.Build; 53import android.os.Handler; 54import android.os.HandlerThread; 55import android.os.IBinder; 56import android.os.Message; 57import android.os.Messenger; 58import android.os.PowerManager; 59import android.os.RemoteException; 60import android.os.SystemClock; 61import android.os.SystemProperties; 62import android.os.UserHandle; 63import android.os.UserManager; 64import android.os.WorkSource; 65import android.provider.Settings; 66import android.text.TextUtils; 67import android.util.Log; 68import android.util.Slog; 69 70import com.android.internal.R; 71import com.android.internal.app.IBatteryStats; 72import com.android.internal.telephony.TelephonyIntents; 73import com.android.internal.util.AsyncChannel; 74import com.android.server.am.BatteryStatsService; 75import com.android.server.wifi.configparse.ConfigBuilder; 76 77import org.xml.sax.SAXException; 78 79import java.io.BufferedReader; 80import java.io.FileDescriptor; 81import java.io.FileNotFoundException; 82import java.io.FileReader; 83import java.io.IOException; 84import java.io.PrintWriter; 85import java.net.Inet4Address; 86import java.net.InetAddress; 87import java.security.GeneralSecurityException; 88import java.security.KeyStore; 89import java.security.cert.CertPath; 90import java.security.cert.CertPathValidator; 91import java.security.cert.CertPathValidatorException; 92import java.security.cert.CertificateFactory; 93import java.security.cert.PKIXParameters; 94import java.security.cert.X509Certificate; 95import java.util.ArrayList; 96import java.util.Arrays; 97import java.util.List; 98 99import static com.android.server.wifi.WifiController.CMD_AIRPLANE_TOGGLED; 100import static com.android.server.wifi.WifiController.CMD_BATTERY_CHANGED; 101import static com.android.server.wifi.WifiController.CMD_EMERGENCY_MODE_CHANGED; 102import static com.android.server.wifi.WifiController.CMD_LOCKS_CHANGED; 103import static com.android.server.wifi.WifiController.CMD_SCAN_ALWAYS_MODE_CHANGED; 104import static com.android.server.wifi.WifiController.CMD_SCREEN_OFF; 105import static com.android.server.wifi.WifiController.CMD_SCREEN_ON; 106import static com.android.server.wifi.WifiController.CMD_SET_AP; 107import static com.android.server.wifi.WifiController.CMD_USER_PRESENT; 108import static com.android.server.wifi.WifiController.CMD_WIFI_TOGGLED; 109/** 110 * WifiService handles remote WiFi operation requests by implementing 111 * the IWifiManager interface. 112 * 113 * @hide 114 */ 115public final class WifiServiceImpl extends IWifiManager.Stub { 116 private static final String TAG = "WifiService"; 117 private static final boolean DBG = true; 118 private static final boolean VDBG = false; 119 120 final WifiStateMachine mWifiStateMachine; 121 122 private final Context mContext; 123 124 final LockList mLocks = new LockList(); 125 // some wifi lock statistics 126 private int mFullHighPerfLocksAcquired; 127 private int mFullHighPerfLocksReleased; 128 private int mFullLocksAcquired; 129 private int mFullLocksReleased; 130 private int mScanLocksAcquired; 131 private int mScanLocksReleased; 132 133 private final List<Multicaster> mMulticasters = 134 new ArrayList<Multicaster>(); 135 private int mMulticastEnabled; 136 private int mMulticastDisabled; 137 138 private final IBatteryStats mBatteryStats; 139 private final PowerManager mPowerManager; 140 private final AppOpsManager mAppOps; 141 private final UserManager mUserManager; 142 143 private String mInterfaceName; 144 145 // Debug counter tracking scan requests sent by WifiManager 146 private int scanRequestCounter = 0; 147 148 /* Tracks the open wi-fi network notification */ 149 private WifiNotificationController mNotificationController; 150 /* Polls traffic stats and notifies clients */ 151 private WifiTrafficPoller mTrafficPoller; 152 /* Tracks the persisted states for wi-fi & airplane mode */ 153 final WifiSettingsStore mSettingsStore; 154 155 /** 156 * Asynchronous channel to WifiStateMachine 157 */ 158 private AsyncChannel mWifiStateMachineChannel; 159 160 /** 161 * Handles client connections 162 */ 163 private class ClientHandler extends Handler { 164 165 ClientHandler(android.os.Looper looper) { 166 super(looper); 167 } 168 169 @Override 170 public void handleMessage(Message msg) { 171 switch (msg.what) { 172 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 173 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 174 if (DBG) Slog.d(TAG, "New client listening to asynchronous messages"); 175 // We track the clients by the Messenger 176 // since it is expected to be always available 177 mTrafficPoller.addClient(msg.replyTo); 178 } else { 179 Slog.e(TAG, "Client connection failure, error=" + msg.arg1); 180 } 181 break; 182 } 183 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 184 if (msg.arg1 == AsyncChannel.STATUS_SEND_UNSUCCESSFUL) { 185 if (DBG) Slog.d(TAG, "Send failed, client connection lost"); 186 } else { 187 if (DBG) Slog.d(TAG, "Client connection lost with reason: " + msg.arg1); 188 } 189 mTrafficPoller.removeClient(msg.replyTo); 190 break; 191 } 192 case AsyncChannel.CMD_CHANNEL_FULL_CONNECTION: { 193 AsyncChannel ac = new AsyncChannel(); 194 ac.connect(mContext, this, msg.replyTo); 195 break; 196 } 197 /* Client commands are forwarded to state machine */ 198 case WifiManager.CONNECT_NETWORK: 199 case WifiManager.SAVE_NETWORK: { 200 WifiConfiguration config = (WifiConfiguration) msg.obj; 201 int networkId = msg.arg1; 202 if (msg.what == WifiManager.SAVE_NETWORK) { 203 Slog.e("WiFiServiceImpl ", "SAVE" 204 + " nid=" + Integer.toString(networkId) 205 + " uid=" + msg.sendingUid 206 + " name=" 207 + mContext.getPackageManager().getNameForUid(msg.sendingUid)); 208 } 209 if (msg.what == WifiManager.CONNECT_NETWORK) { 210 Slog.e("WiFiServiceImpl ", "CONNECT " 211 + " nid=" + Integer.toString(networkId) 212 + " uid=" + msg.sendingUid 213 + " name=" 214 + mContext.getPackageManager().getNameForUid(msg.sendingUid)); 215 } 216 217 if (config != null && isValid(config)) { 218 if (DBG) Slog.d(TAG, "Connect with config" + config); 219 mWifiStateMachine.sendMessage(Message.obtain(msg)); 220 } else if (config == null 221 && networkId != WifiConfiguration.INVALID_NETWORK_ID) { 222 if (DBG) Slog.d(TAG, "Connect with networkId" + networkId); 223 mWifiStateMachine.sendMessage(Message.obtain(msg)); 224 } else { 225 Slog.e(TAG, "ClientHandler.handleMessage ignoring invalid msg=" + msg); 226 if (msg.what == WifiManager.CONNECT_NETWORK) { 227 replyFailed(msg, WifiManager.CONNECT_NETWORK_FAILED, 228 WifiManager.INVALID_ARGS); 229 } else { 230 replyFailed(msg, WifiManager.SAVE_NETWORK_FAILED, 231 WifiManager.INVALID_ARGS); 232 } 233 } 234 break; 235 } 236 case WifiManager.FORGET_NETWORK: 237 if (isOwner(msg.sendingUid)) { 238 mWifiStateMachine.sendMessage(Message.obtain(msg)); 239 } else { 240 Slog.e(TAG, "Forget is not authorized for user"); 241 replyFailed(msg, WifiManager.FORGET_NETWORK_FAILED, 242 WifiManager.NOT_AUTHORIZED); 243 } 244 break; 245 case WifiManager.START_WPS: 246 case WifiManager.CANCEL_WPS: 247 case WifiManager.DISABLE_NETWORK: 248 case WifiManager.RSSI_PKTCNT_FETCH: { 249 mWifiStateMachine.sendMessage(Message.obtain(msg)); 250 break; 251 } 252 default: { 253 Slog.d(TAG, "ClientHandler.handleMessage ignoring msg=" + msg); 254 break; 255 } 256 } 257 } 258 259 private void replyFailed(Message msg, int what, int why) { 260 Message reply = msg.obtain(); 261 reply.what = what; 262 reply.arg1 = why; 263 try { 264 msg.replyTo.send(reply); 265 } catch (RemoteException e) { 266 // There's not much we can do if reply can't be sent! 267 } 268 } 269 } 270 private ClientHandler mClientHandler; 271 272 /** 273 * Handles interaction with WifiStateMachine 274 */ 275 private class WifiStateMachineHandler extends Handler { 276 private AsyncChannel mWsmChannel; 277 278 WifiStateMachineHandler(android.os.Looper looper) { 279 super(looper); 280 mWsmChannel = new AsyncChannel(); 281 mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); 282 } 283 284 @Override 285 public void handleMessage(Message msg) { 286 switch (msg.what) { 287 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 288 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 289 mWifiStateMachineChannel = mWsmChannel; 290 } else { 291 Slog.e(TAG, "WifiStateMachine connection failure, error=" + msg.arg1); 292 mWifiStateMachineChannel = null; 293 } 294 break; 295 } 296 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 297 Slog.e(TAG, "WifiStateMachine channel lost, msg.arg1 =" + msg.arg1); 298 mWifiStateMachineChannel = null; 299 //Re-establish connection to state machine 300 mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); 301 break; 302 } 303 default: { 304 Slog.d(TAG, "WifiStateMachineHandler.handleMessage ignoring msg=" + msg); 305 break; 306 } 307 } 308 } 309 } 310 311 WifiStateMachineHandler mWifiStateMachineHandler; 312 313 private WifiWatchdogStateMachine mWifiWatchdogStateMachine; 314 315 private WifiController mWifiController; 316 317 public WifiServiceImpl(Context context) { 318 mContext = context; 319 320 mInterfaceName = SystemProperties.get("wifi.interface", "wlan0"); 321 322 mTrafficPoller = new WifiTrafficPoller(mContext, mInterfaceName); 323 mWifiStateMachine = new WifiStateMachine(mContext, mInterfaceName, mTrafficPoller); 324 mWifiStateMachine.enableRssiPolling(true); 325 mBatteryStats = BatteryStatsService.getService(); 326 mPowerManager = context.getSystemService(PowerManager.class); 327 mAppOps = (AppOpsManager)context.getSystemService(Context.APP_OPS_SERVICE); 328 mUserManager = UserManager.get(mContext); 329 330 mNotificationController = new WifiNotificationController(mContext, mWifiStateMachine); 331 mSettingsStore = new WifiSettingsStore(mContext); 332 333 HandlerThread wifiThread = new HandlerThread("WifiService"); 334 wifiThread.start(); 335 mClientHandler = new ClientHandler(wifiThread.getLooper()); 336 mWifiStateMachineHandler = new WifiStateMachineHandler(wifiThread.getLooper()); 337 mWifiController = new WifiController(mContext, this, wifiThread.getLooper()); 338 } 339 340 341 /** 342 * Check if Wi-Fi needs to be enabled and start 343 * if needed 344 * 345 * This function is used only at boot time 346 */ 347 public void checkAndStartWifi() { 348 /* Check if wi-fi needs to be enabled */ 349 boolean wifiEnabled = mSettingsStore.isWifiToggleEnabled(); 350 Slog.i(TAG, "WifiService starting up with Wi-Fi " + 351 (wifiEnabled ? "enabled" : "disabled")); 352 353 registerForScanModeChange(); 354 mContext.registerReceiver( 355 new BroadcastReceiver() { 356 @Override 357 public void onReceive(Context context, Intent intent) { 358 if (mSettingsStore.handleAirplaneModeToggled()) { 359 mWifiController.sendMessage(CMD_AIRPLANE_TOGGLED); 360 } 361 } 362 }, 363 new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED)); 364 365 // Adding optimizations of only receiving broadcasts when wifi is enabled 366 // can result in race conditions when apps toggle wifi in the background 367 // without active user involvement. Always receive broadcasts. 368 registerForBroadcasts(); 369 registerForPackageOrUserRemoval(); 370 mInIdleMode = mPowerManager.isDeviceIdleMode(); 371 372 mWifiController.start(); 373 374 // If we are already disabled (could be due to airplane mode), avoid changing persist 375 // state here 376 if (wifiEnabled) setWifiEnabled(wifiEnabled); 377 378 mWifiWatchdogStateMachine = WifiWatchdogStateMachine. 379 makeWifiWatchdogStateMachine(mContext, mWifiStateMachine.getMessenger()); 380 } 381 382 /** 383 * see {@link android.net.wifi.WifiManager#pingSupplicant()} 384 * @return {@code true} if the operation succeeds, {@code false} otherwise 385 */ 386 public boolean pingSupplicant() { 387 enforceAccessPermission(); 388 if (mWifiStateMachineChannel != null) { 389 return mWifiStateMachine.syncPingSupplicant(mWifiStateMachineChannel); 390 } else { 391 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 392 return false; 393 } 394 } 395 396 /** 397 * see {@link android.net.wifi.WifiManager#getChannelList} 398 */ 399 public List<WifiChannel> getChannelList() { 400 enforceAccessPermission(); 401 if (mWifiStateMachineChannel != null) { 402 return mWifiStateMachine.syncGetChannelList(mWifiStateMachineChannel); 403 } else { 404 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 405 return null; 406 } 407 } 408 409 // Start a location scan. 410 // L release: A location scan is implemented as a normal scan and avoids scanning DFS channels 411 // Deprecated: Will soon remove implementation 412 public void startLocationRestrictedScan(WorkSource workSource) { 413 enforceChangePermission(); 414 enforceLocationHardwarePermission(); 415 List<WifiChannel> channels = getChannelList(); 416 if (channels == null) { 417 Slog.e(TAG, "startLocationRestrictedScan cant get channels"); 418 return; 419 } 420 ScanSettings settings = new ScanSettings(); 421 for (WifiChannel channel : channels) { 422 if (!channel.isDFS) { 423 settings.channelSet.add(channel); 424 } 425 } 426 if (workSource == null) { 427 // Make sure we always have a workSource indicating the origin of the scan 428 // hence if there is none, pick an internal WifiStateMachine one 429 workSource = new WorkSource(WifiStateMachine.DFS_RESTRICTED_SCAN_REQUEST); 430 } 431 startScan(settings, workSource); 432 } 433 434 /** 435 * see {@link android.net.wifi.WifiManager#startScan} 436 * and {@link android.net.wifi.WifiManager#startCustomizedScan} 437 * 438 * @param settings If null, use default parameter, i.e. full scan. 439 * @param workSource If null, all blame is given to the calling uid. 440 */ 441 public void startScan(ScanSettings settings, WorkSource workSource) { 442 enforceChangePermission(); 443 synchronized (this) { 444 if (mInIdleMode) { 445 // Need to send an immediate scan result broadcast in case the 446 // caller is waiting for a result .. 447 mWifiStateMachine.sendScanResultsAvailableBroadcast(/* scanSucceeded = */ false); 448 mScanPending = true; 449 return; 450 } 451 } 452 if (settings != null) { 453 settings = new ScanSettings(settings); 454 if (!settings.isValid()) { 455 Slog.e(TAG, "invalid scan setting"); 456 return; 457 } 458 } 459 if (workSource != null) { 460 enforceWorkSourcePermission(); 461 // WifiManager currently doesn't use names, so need to clear names out of the 462 // supplied WorkSource to allow future WorkSource combining. 463 workSource.clearNames(); 464 } 465 mWifiStateMachine.startScan(Binder.getCallingUid(), scanRequestCounter++, 466 settings, workSource); 467 } 468 469 public boolean isBatchedScanSupported() { 470 return false; 471 } 472 473 public void pollBatchedScan() { } 474 475 public String getWpsNfcConfigurationToken(int netId) { 476 enforceConnectivityInternalPermission(); 477 return mWifiStateMachine.syncGetWpsNfcConfigurationToken(netId); 478 } 479 480 /** 481 * see {@link android.net.wifi.WifiManager#requestBatchedScan()} 482 */ 483 public boolean requestBatchedScan(BatchedScanSettings requested, IBinder binder, 484 WorkSource workSource) { 485 return false; 486 } 487 488 public List<BatchedScanResult> getBatchedScanResults(String callingPackage) { 489 return null; 490 } 491 492 public void stopBatchedScan(BatchedScanSettings settings) { } 493 494 boolean mInIdleMode; 495 boolean mScanPending; 496 497 void handleIdleModeChanged() { 498 boolean doScan = false; 499 synchronized (this) { 500 boolean idle = mPowerManager.isDeviceIdleMode(); 501 if (mInIdleMode != idle) { 502 mInIdleMode = idle; 503 if (!idle) { 504 if (mScanPending) { 505 mScanPending = false; 506 doScan = true; 507 } 508 } 509 } 510 } 511 if (doScan) { 512 // Someone requested a scan while we were idle; do a full scan now. 513 startScan(null, null); 514 } 515 } 516 517 private void enforceAccessPermission() { 518 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.ACCESS_WIFI_STATE, 519 "WifiService"); 520 } 521 522 private void enforceChangePermission() { 523 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.CHANGE_WIFI_STATE, 524 "WifiService"); 525 } 526 527 private void enforceLocationHardwarePermission() { 528 mContext.enforceCallingOrSelfPermission(Manifest.permission.LOCATION_HARDWARE, 529 "LocationHardware"); 530 } 531 532 private void enforceReadCredentialPermission() { 533 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.READ_WIFI_CREDENTIAL, 534 "WifiService"); 535 } 536 537 private void enforceWorkSourcePermission() { 538 mContext.enforceCallingPermission(android.Manifest.permission.UPDATE_DEVICE_STATS, 539 "WifiService"); 540 541 } 542 543 private void enforceMulticastChangePermission() { 544 mContext.enforceCallingOrSelfPermission( 545 android.Manifest.permission.CHANGE_WIFI_MULTICAST_STATE, 546 "WifiService"); 547 } 548 549 private void enforceConnectivityInternalPermission() { 550 mContext.enforceCallingOrSelfPermission( 551 android.Manifest.permission.CONNECTIVITY_INTERNAL, 552 "ConnectivityService"); 553 } 554 555 /** 556 * see {@link android.net.wifi.WifiManager#setWifiEnabled(boolean)} 557 * @param enable {@code true} to enable, {@code false} to disable. 558 * @return {@code true} if the enable/disable operation was 559 * started or is already in the queue. 560 */ 561 public synchronized boolean setWifiEnabled(boolean enable) { 562 enforceChangePermission(); 563 Slog.d(TAG, "setWifiEnabled: " + enable + " pid=" + Binder.getCallingPid() 564 + ", uid=" + Binder.getCallingUid()); 565 if (DBG) { 566 Slog.e(TAG, "Invoking mWifiStateMachine.setWifiEnabled\n"); 567 } 568 569 /* 570 * Caller might not have WRITE_SECURE_SETTINGS, 571 * only CHANGE_WIFI_STATE is enforced 572 */ 573 574 long ident = Binder.clearCallingIdentity(); 575 try { 576 if (! mSettingsStore.handleWifiToggled(enable)) { 577 // Nothing to do if wifi cannot be toggled 578 return true; 579 } 580 } finally { 581 Binder.restoreCallingIdentity(ident); 582 } 583 584 mWifiController.sendMessage(CMD_WIFI_TOGGLED); 585 return true; 586 } 587 588 /** 589 * see {@link WifiManager#getWifiState()} 590 * @return One of {@link WifiManager#WIFI_STATE_DISABLED}, 591 * {@link WifiManager#WIFI_STATE_DISABLING}, 592 * {@link WifiManager#WIFI_STATE_ENABLED}, 593 * {@link WifiManager#WIFI_STATE_ENABLING}, 594 * {@link WifiManager#WIFI_STATE_UNKNOWN} 595 */ 596 public int getWifiEnabledState() { 597 enforceAccessPermission(); 598 return mWifiStateMachine.syncGetWifiState(); 599 } 600 601 /** 602 * see {@link android.net.wifi.WifiManager#setWifiApEnabled(WifiConfiguration, boolean)} 603 * @param wifiConfig SSID, security and channel details as 604 * part of WifiConfiguration 605 * @param enabled true to enable and false to disable 606 */ 607 public void setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) { 608 enforceChangePermission(); 609 ConnectivityManager.enforceTetherChangePermission(mContext); 610 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 611 throw new SecurityException("DISALLOW_CONFIG_TETHERING is enabled for this user."); 612 } 613 // null wifiConfig is a meaningful input for CMD_SET_AP 614 if (wifiConfig == null || isValid(wifiConfig)) { 615 mWifiController.obtainMessage(CMD_SET_AP, enabled ? 1 : 0, 0, wifiConfig).sendToTarget(); 616 } else { 617 Slog.e(TAG, "Invalid WifiConfiguration"); 618 } 619 } 620 621 /** 622 * see {@link WifiManager#getWifiApState()} 623 * @return One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 624 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 625 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 626 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 627 * {@link WifiManager#WIFI_AP_STATE_FAILED} 628 */ 629 public int getWifiApEnabledState() { 630 enforceAccessPermission(); 631 return mWifiStateMachine.syncGetWifiApState(); 632 } 633 634 /** 635 * see {@link WifiManager#getWifiApConfiguration()} 636 * @return soft access point configuration 637 */ 638 public WifiConfiguration getWifiApConfiguration() { 639 enforceAccessPermission(); 640 return mWifiStateMachine.syncGetWifiApConfiguration(); 641 } 642 643 /** 644 * see {@link WifiManager#buildWifiConfig()} 645 * @return a WifiConfiguration. 646 */ 647 public WifiConfiguration buildWifiConfig(String uriString, String mimeType, byte[] data) { 648 if (mimeType.equals(ConfigBuilder.WifiConfigType)) { 649 try { 650 return ConfigBuilder.buildConfig(uriString, data, mContext); 651 } 652 catch (IOException | GeneralSecurityException | SAXException e) { 653 Log.e(TAG, "Failed to parse wi-fi configuration: " + e); 654 } 655 } 656 else { 657 Log.i(TAG, "Unknown wi-fi config type: " + mimeType); 658 } 659 return null; 660 } 661 662 /** 663 * see {@link WifiManager#setWifiApConfiguration(WifiConfiguration)} 664 * @param wifiConfig WifiConfiguration details for soft access point 665 */ 666 public void setWifiApConfiguration(WifiConfiguration wifiConfig) { 667 enforceChangePermission(); 668 if (wifiConfig == null) 669 return; 670 if (isValid(wifiConfig)) { 671 mWifiStateMachine.setWifiApConfiguration(wifiConfig); 672 } else { 673 Slog.e(TAG, "Invalid WifiConfiguration"); 674 } 675 } 676 677 /** 678 * @param enable {@code true} to enable, {@code false} to disable. 679 * @return {@code true} if the enable/disable operation was 680 * started or is already in the queue. 681 */ 682 public boolean isScanAlwaysAvailable() { 683 enforceAccessPermission(); 684 return mSettingsStore.isScanAlwaysAvailable(); 685 } 686 687 /** 688 * see {@link android.net.wifi.WifiManager#disconnect()} 689 */ 690 public void disconnect() { 691 enforceChangePermission(); 692 mWifiStateMachine.disconnectCommand(); 693 } 694 695 /** 696 * see {@link android.net.wifi.WifiManager#reconnect()} 697 */ 698 public void reconnect() { 699 enforceChangePermission(); 700 mWifiStateMachine.reconnectCommand(); 701 } 702 703 /** 704 * see {@link android.net.wifi.WifiManager#reassociate()} 705 */ 706 public void reassociate() { 707 enforceChangePermission(); 708 mWifiStateMachine.reassociateCommand(); 709 } 710 711 /** 712 * see {@link android.net.wifi.WifiManager#getSupportedFeatures} 713 */ 714 public int getSupportedFeatures() { 715 enforceAccessPermission(); 716 if (mWifiStateMachineChannel != null) { 717 return mWifiStateMachine.syncGetSupportedFeatures(mWifiStateMachineChannel); 718 } else { 719 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 720 return 0; 721 } 722 } 723 724 /** 725 * see {@link android.net.wifi.WifiManager#getControllerActivityEnergyInfo(int)} 726 */ 727 public WifiActivityEnergyInfo reportActivityInfo() { 728 enforceAccessPermission(); 729 WifiLinkLayerStats stats; 730 WifiActivityEnergyInfo energyInfo = null; 731 if (mWifiStateMachineChannel != null) { 732 stats = mWifiStateMachine.syncGetLinkLayerStats(mWifiStateMachineChannel); 733 if (stats != null) { 734 final long rxIdleCurrent = mContext.getResources().getInteger( 735 com.android.internal.R.integer.config_wifi_idle_receive_cur_ma); 736 final long rxCurrent = mContext.getResources().getInteger( 737 com.android.internal.R.integer.config_wifi_active_rx_cur_ma); 738 final long txCurrent = mContext.getResources().getInteger( 739 com.android.internal.R.integer.config_wifi_tx_cur_ma); 740 final double voltage = mContext.getResources().getInteger( 741 com.android.internal.R.integer.config_wifi_operating_voltage_mv) 742 / 1000.0; 743 744 final long rxIdleTime = stats.on_time - stats.tx_time - stats.rx_time; 745 final long energyUsed = (long)((stats.tx_time * txCurrent + 746 stats.rx_time * rxCurrent + 747 rxIdleTime * rxIdleCurrent) * voltage); 748 if (VDBG) { 749 StringBuilder sb = new StringBuilder(); 750 sb.append(" rxIdleCur=" + rxIdleCurrent); 751 sb.append(" rxCur=" + rxCurrent); 752 sb.append(" txCur=" + txCurrent); 753 sb.append(" voltage=" + voltage); 754 sb.append(" on_time=" + stats.on_time); 755 sb.append(" tx_time=" + stats.tx_time); 756 sb.append(" rx_time=" + stats.rx_time); 757 sb.append(" rxIdleTime=" + rxIdleTime); 758 sb.append(" energy=" + energyUsed); 759 Log.e(TAG, " reportActivityInfo: " + sb.toString()); 760 } 761 762 // Convert the LinkLayerStats into EnergyActivity 763 energyInfo = new WifiActivityEnergyInfo(SystemClock.elapsedRealtime(), 764 WifiActivityEnergyInfo.STACK_STATE_STATE_IDLE, stats.tx_time, 765 stats.rx_time, rxIdleTime, energyUsed); 766 } 767 return energyInfo; 768 } else { 769 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 770 return null; 771 } 772 } 773 774 /** 775 * see {@link android.net.wifi.WifiManager#getConfiguredNetworks()} 776 * @return the list of configured networks 777 */ 778 public List<WifiConfiguration> getConfiguredNetworks() { 779 enforceAccessPermission(); 780 if (mWifiStateMachineChannel != null) { 781 return mWifiStateMachine.syncGetConfiguredNetworks(Binder.getCallingUid(), 782 mWifiStateMachineChannel); 783 } else { 784 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 785 return null; 786 } 787 } 788 789 /** 790 * see {@link android.net.wifi.WifiManager#getPrivilegedConfiguredNetworks()} 791 * @return the list of configured networks with real preSharedKey 792 */ 793 public List<WifiConfiguration> getPrivilegedConfiguredNetworks() { 794 enforceReadCredentialPermission(); 795 enforceAccessPermission(); 796 if (mWifiStateMachineChannel != null) { 797 return mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel); 798 } else { 799 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 800 return null; 801 } 802 } 803 804 /** 805 * Returns a WifiConfiguration matching this ScanResult 806 * @param scanResult scanResult that represents the BSSID 807 * @return {@link WifiConfiguration} that matches this BSSID or null 808 */ 809 public WifiConfiguration getMatchingWifiConfig(ScanResult scanResult) { 810 enforceAccessPermission(); 811 return mWifiStateMachine.syncGetMatchingWifiConfig(scanResult, mWifiStateMachineChannel); 812 } 813 814 815 /** 816 * see {@link android.net.wifi.WifiManager#addOrUpdateNetwork(WifiConfiguration)} 817 * @return the supplicant-assigned identifier for the new or updated 818 * network if the operation succeeds, or {@code -1} if it fails 819 */ 820 public int addOrUpdateNetwork(WifiConfiguration config) { 821 enforceChangePermission(); 822 if (isValid(config) && isValidPasspoint(config)) { 823 824 WifiEnterpriseConfig enterpriseConfig = config.enterpriseConfig; 825 826 if (config.isPasspoint() && 827 (enterpriseConfig.getEapMethod() == WifiEnterpriseConfig.Eap.TLS || 828 enterpriseConfig.getEapMethod() == WifiEnterpriseConfig.Eap.TTLS)) { 829 try { 830 verifyCert(enterpriseConfig.getCaCertificate()); 831 } catch (CertPathValidatorException cpve) { 832 Slog.e(TAG, "CA Cert " + 833 enterpriseConfig.getCaCertificate().getSubjectX500Principal() + 834 " untrusted: " + cpve.getMessage()); 835 return -1; 836 } catch (GeneralSecurityException | IOException e) { 837 Slog.e(TAG, "Failed to verify certificate" + 838 enterpriseConfig.getCaCertificate().getSubjectX500Principal() + 839 ": " + e); 840 return -1; 841 } 842 } 843 844 //TODO: pass the Uid the WifiStateMachine as a message parameter 845 Slog.i("addOrUpdateNetwork", " uid = " + Integer.toString(Binder.getCallingUid()) 846 + " SSID " + config.SSID 847 + " nid=" + Integer.toString(config.networkId)); 848 if (config.networkId == WifiConfiguration.INVALID_NETWORK_ID) { 849 config.creatorUid = Binder.getCallingUid(); 850 } else { 851 config.lastUpdateUid = Binder.getCallingUid(); 852 } 853 if (mWifiStateMachineChannel != null) { 854 return mWifiStateMachine.syncAddOrUpdateNetwork(mWifiStateMachineChannel, config); 855 } else { 856 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 857 return -1; 858 } 859 } else { 860 Slog.e(TAG, "bad network configuration"); 861 return -1; 862 } 863 } 864 865 public static void verifyCert(X509Certificate caCert) 866 throws GeneralSecurityException, IOException { 867 CertificateFactory factory = CertificateFactory.getInstance("X.509"); 868 CertPathValidator validator = 869 CertPathValidator.getInstance(CertPathValidator.getDefaultType()); 870 CertPath path = factory.generateCertPath( 871 Arrays.asList(caCert)); 872 KeyStore ks = KeyStore.getInstance("AndroidCAStore"); 873 ks.load(null, null); 874 PKIXParameters params = new PKIXParameters(ks); 875 params.setRevocationEnabled(false); 876 validator.validate(path, params); 877 } 878 879 /** 880 * See {@link android.net.wifi.WifiManager#removeNetwork(int)} 881 * @param netId the integer that identifies the network configuration 882 * to the supplicant 883 * @return {@code true} if the operation succeeded 884 */ 885 public boolean removeNetwork(int netId) { 886 enforceChangePermission(); 887 888 if (!isOwner(Binder.getCallingUid())) { 889 Slog.e(TAG, "Remove is not authorized for user"); 890 return false; 891 } 892 893 if (mWifiStateMachineChannel != null) { 894 return mWifiStateMachine.syncRemoveNetwork(mWifiStateMachineChannel, netId); 895 } else { 896 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 897 return false; 898 } 899 } 900 901 /** 902 * See {@link android.net.wifi.WifiManager#enableNetwork(int, boolean)} 903 * @param netId the integer that identifies the network configuration 904 * to the supplicant 905 * @param disableOthers if true, disable all other networks. 906 * @return {@code true} if the operation succeeded 907 */ 908 public boolean enableNetwork(int netId, boolean disableOthers) { 909 enforceChangePermission(); 910 if (mWifiStateMachineChannel != null) { 911 return mWifiStateMachine.syncEnableNetwork(mWifiStateMachineChannel, netId, 912 disableOthers); 913 } else { 914 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 915 return false; 916 } 917 } 918 919 /** 920 * See {@link android.net.wifi.WifiManager#disableNetwork(int)} 921 * @param netId the integer that identifies the network configuration 922 * to the supplicant 923 * @return {@code true} if the operation succeeded 924 */ 925 public boolean disableNetwork(int netId) { 926 enforceChangePermission(); 927 if (mWifiStateMachineChannel != null) { 928 return mWifiStateMachine.syncDisableNetwork(mWifiStateMachineChannel, netId); 929 } else { 930 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 931 return false; 932 } 933 } 934 935 /** 936 * See {@link android.net.wifi.WifiManager#getConnectionInfo()} 937 * @return the Wi-Fi information, contained in {@link WifiInfo}. 938 */ 939 public WifiInfo getConnectionInfo() { 940 enforceAccessPermission(); 941 /* 942 * Make sure we have the latest information, by sending 943 * a status request to the supplicant. 944 */ 945 return mWifiStateMachine.syncRequestConnectionInfo(); 946 } 947 948 /** 949 * Return the results of the most recent access point scan, in the form of 950 * a list of {@link ScanResult} objects. 951 * @return the list of results 952 */ 953 public List<ScanResult> getScanResults(String callingPackage) { 954 enforceAccessPermission(); 955 int userId = UserHandle.getCallingUserId(); 956 int uid = Binder.getCallingUid(); 957 boolean canReadPeerMacAddresses = checkPeersMacAddress(); 958 boolean isActiveNetworkScorer = 959 NetworkScorerAppManager.isCallerActiveScorer(mContext, uid); 960 boolean hasInteractUsersFull = checkInteractAcrossUsersFull(); 961 long ident = Binder.clearCallingIdentity(); 962 try { 963 if (!canReadPeerMacAddresses && !isActiveNetworkScorer 964 && !isLocationEnabled()) { 965 return new ArrayList<ScanResult>(); 966 } 967 if (!canReadPeerMacAddresses && !isActiveNetworkScorer 968 && !checkCallerHasLocationPermission(callingPackage, uid)) { 969 return new ArrayList<ScanResult>(); 970 } 971 if (mAppOps.noteOp(AppOpsManager.OP_WIFI_SCAN, uid, callingPackage) 972 != AppOpsManager.MODE_ALLOWED) { 973 return new ArrayList<ScanResult>(); 974 } 975 if (!isCurrentProfile(userId) && !hasInteractUsersFull) { 976 return new ArrayList<ScanResult>(); 977 } 978 return mWifiStateMachine.syncGetScanResultsList(); 979 } finally { 980 Binder.restoreCallingIdentity(ident); 981 } 982 } 983 984 private boolean isLocationEnabled() { 985 return Settings.Secure.getInt(mContext.getContentResolver(), Settings.Secure.LOCATION_MODE, 986 Settings.Secure.LOCATION_MODE_OFF) != Settings.Secure.LOCATION_MODE_OFF; 987 } 988 989 /** 990 * Returns true if the caller holds INTERACT_ACROSS_USERS_FULL. 991 */ 992 private boolean checkInteractAcrossUsersFull() { 993 return mContext.checkCallingOrSelfPermission( 994 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL) 995 == PackageManager.PERMISSION_GRANTED; 996 } 997 998 /** 999 * Returns true if the caller holds PEERS_MAC_ADDRESS. 1000 */ 1001 private boolean checkPeersMacAddress() { 1002 return mContext.checkCallingOrSelfPermission( 1003 android.Manifest.permission.PEERS_MAC_ADDRESS) == PackageManager.PERMISSION_GRANTED; 1004 } 1005 1006 /** 1007 * Returns true if the calling user is the current one or a profile of the 1008 * current user.. 1009 */ 1010 private boolean isCurrentProfile(int userId) { 1011 int currentUser = ActivityManager.getCurrentUser(); 1012 if (userId == currentUser) { 1013 return true; 1014 } 1015 List<UserInfo> profiles = mUserManager.getProfiles(currentUser); 1016 for (UserInfo user : profiles) { 1017 if (userId == user.id) { 1018 return true; 1019 } 1020 } 1021 return false; 1022 } 1023 1024 /** 1025 * Returns true if uid is an application running under the owner or a profile of the owner. 1026 * 1027 * Note: Should not be called if identity is cleared. 1028 */ 1029 private boolean isOwner(int uid) { 1030 long ident = Binder.clearCallingIdentity(); 1031 int userId = UserHandle.getUserId(uid); 1032 try { 1033 int ownerUser = UserHandle.USER_OWNER; 1034 if (userId == ownerUser) { 1035 return true; 1036 } 1037 List<UserInfo> profiles = mUserManager.getProfiles(ownerUser); 1038 for (UserInfo profile : profiles) { 1039 if (userId == profile.id) { 1040 return true; 1041 } 1042 } 1043 return false; 1044 } 1045 finally { 1046 Binder.restoreCallingIdentity(ident); 1047 } 1048 } 1049 1050 1051 /** 1052 * Tell the supplicant to persist the current list of configured networks. 1053 * @return {@code true} if the operation succeeded 1054 * 1055 * TODO: deprecate this 1056 */ 1057 public boolean saveConfiguration() { 1058 boolean result = true; 1059 enforceChangePermission(); 1060 if (mWifiStateMachineChannel != null) { 1061 return mWifiStateMachine.syncSaveConfig(mWifiStateMachineChannel); 1062 } else { 1063 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1064 return false; 1065 } 1066 } 1067 1068 /** 1069 * Set the country code 1070 * @param countryCode ISO 3166 country code. 1071 * @param persist {@code true} if the setting should be remembered. 1072 * 1073 * The persist behavior exists so that wifi can fall back to the last 1074 * persisted country code on a restart, when the locale information is 1075 * not available from telephony. 1076 */ 1077 public void setCountryCode(String countryCode, boolean persist) { 1078 Slog.i(TAG, "WifiService trying to set country code to " + countryCode + 1079 " with persist set to " + persist); 1080 enforceConnectivityInternalPermission(); 1081 final long token = Binder.clearCallingIdentity(); 1082 try { 1083 mWifiStateMachine.setCountryCode(countryCode, persist); 1084 } finally { 1085 Binder.restoreCallingIdentity(token); 1086 } 1087 } 1088 1089 /** 1090 * Get the country code 1091 * @return ISO 3166 country code. 1092 */ 1093 public String getCountryCode() { 1094 enforceConnectivityInternalPermission(); 1095 String country = mWifiStateMachine.getCountryCode(); 1096 return country; 1097 } 1098 /** 1099 * Set the operational frequency band 1100 * @param band One of 1101 * {@link WifiManager#WIFI_FREQUENCY_BAND_AUTO}, 1102 * {@link WifiManager#WIFI_FREQUENCY_BAND_5GHZ}, 1103 * {@link WifiManager#WIFI_FREQUENCY_BAND_2GHZ}, 1104 * @param persist {@code true} if the setting should be remembered. 1105 * 1106 */ 1107 public void setFrequencyBand(int band, boolean persist) { 1108 enforceChangePermission(); 1109 if (!isDualBandSupported()) return; 1110 Slog.i(TAG, "WifiService trying to set frequency band to " + band + 1111 " with persist set to " + persist); 1112 final long token = Binder.clearCallingIdentity(); 1113 try { 1114 mWifiStateMachine.setFrequencyBand(band, persist); 1115 } finally { 1116 Binder.restoreCallingIdentity(token); 1117 } 1118 } 1119 1120 1121 /** 1122 * Get the operational frequency band 1123 */ 1124 public int getFrequencyBand() { 1125 enforceAccessPermission(); 1126 return mWifiStateMachine.getFrequencyBand(); 1127 } 1128 1129 public boolean isDualBandSupported() { 1130 //TODO: Should move towards adding a driver API that checks at runtime 1131 return mContext.getResources().getBoolean( 1132 com.android.internal.R.bool.config_wifi_dual_band_support); 1133 } 1134 1135 /** 1136 * Return the DHCP-assigned addresses from the last successful DHCP request, 1137 * if any. 1138 * @return the DHCP information 1139 * @deprecated 1140 */ 1141 public DhcpInfo getDhcpInfo() { 1142 enforceAccessPermission(); 1143 DhcpResults dhcpResults = mWifiStateMachine.syncGetDhcpResults(); 1144 1145 DhcpInfo info = new DhcpInfo(); 1146 1147 if (dhcpResults.ipAddress != null && 1148 dhcpResults.ipAddress.getAddress() instanceof Inet4Address) { 1149 info.ipAddress = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.ipAddress.getAddress()); 1150 } 1151 1152 if (dhcpResults.gateway != null) { 1153 info.gateway = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.gateway); 1154 } 1155 1156 int dnsFound = 0; 1157 for (InetAddress dns : dhcpResults.dnsServers) { 1158 if (dns instanceof Inet4Address) { 1159 if (dnsFound == 0) { 1160 info.dns1 = NetworkUtils.inetAddressToInt((Inet4Address)dns); 1161 } else { 1162 info.dns2 = NetworkUtils.inetAddressToInt((Inet4Address)dns); 1163 } 1164 if (++dnsFound > 1) break; 1165 } 1166 } 1167 InetAddress serverAddress = dhcpResults.serverAddress; 1168 if (serverAddress instanceof Inet4Address) { 1169 info.serverAddress = NetworkUtils.inetAddressToInt((Inet4Address)serverAddress); 1170 } 1171 info.leaseDuration = dhcpResults.leaseDuration; 1172 1173 return info; 1174 } 1175 1176 /** 1177 * see {@link android.net.wifi.WifiManager#startWifi} 1178 * 1179 */ 1180 public void startWifi() { 1181 enforceConnectivityInternalPermission(); 1182 /* TODO: may be add permissions for access only to connectivity service 1183 * TODO: if a start issued, keep wifi alive until a stop issued irrespective 1184 * of WifiLock & device idle status unless wifi enabled status is toggled 1185 */ 1186 1187 mWifiStateMachine.setDriverStart(true); 1188 mWifiStateMachine.reconnectCommand(); 1189 } 1190 1191 /** 1192 * see {@link android.net.wifi.WifiManager#stopWifi} 1193 * 1194 */ 1195 public void stopWifi() { 1196 enforceConnectivityInternalPermission(); 1197 /* 1198 * TODO: if a stop is issued, wifi is brought up only by startWifi 1199 * unless wifi enabled status is toggled 1200 */ 1201 mWifiStateMachine.setDriverStart(false); 1202 } 1203 1204 /** 1205 * see {@link android.net.wifi.WifiManager#addToBlacklist} 1206 * 1207 */ 1208 public void addToBlacklist(String bssid) { 1209 enforceChangePermission(); 1210 1211 mWifiStateMachine.addToBlacklist(bssid); 1212 } 1213 1214 /** 1215 * see {@link android.net.wifi.WifiManager#clearBlacklist} 1216 * 1217 */ 1218 public void clearBlacklist() { 1219 enforceChangePermission(); 1220 1221 mWifiStateMachine.clearBlacklist(); 1222 } 1223 1224 /** 1225 * enable TDLS for the local NIC to remote NIC 1226 * The APPs don't know the remote MAC address to identify NIC though, 1227 * so we need to do additional work to find it from remote IP address 1228 */ 1229 1230 class TdlsTaskParams { 1231 public String remoteIpAddress; 1232 public boolean enable; 1233 } 1234 1235 class TdlsTask extends AsyncTask<TdlsTaskParams, Integer, Integer> { 1236 @Override 1237 protected Integer doInBackground(TdlsTaskParams... params) { 1238 1239 // Retrieve parameters for the call 1240 TdlsTaskParams param = params[0]; 1241 String remoteIpAddress = param.remoteIpAddress.trim(); 1242 boolean enable = param.enable; 1243 1244 // Get MAC address of Remote IP 1245 String macAddress = null; 1246 1247 BufferedReader reader = null; 1248 1249 try { 1250 reader = new BufferedReader(new FileReader("/proc/net/arp")); 1251 1252 // Skip over the line bearing colum titles 1253 String line = reader.readLine(); 1254 1255 while ((line = reader.readLine()) != null) { 1256 String[] tokens = line.split("[ ]+"); 1257 if (tokens.length < 6) { 1258 continue; 1259 } 1260 1261 // ARP column format is 1262 // Address HWType HWAddress Flags Mask IFace 1263 String ip = tokens[0]; 1264 String mac = tokens[3]; 1265 1266 if (remoteIpAddress.equals(ip)) { 1267 macAddress = mac; 1268 break; 1269 } 1270 } 1271 1272 if (macAddress == null) { 1273 Slog.w(TAG, "Did not find remoteAddress {" + remoteIpAddress + "} in " + 1274 "/proc/net/arp"); 1275 } else { 1276 enableTdlsWithMacAddress(macAddress, enable); 1277 } 1278 1279 } catch (FileNotFoundException e) { 1280 Slog.e(TAG, "Could not open /proc/net/arp to lookup mac address"); 1281 } catch (IOException e) { 1282 Slog.e(TAG, "Could not read /proc/net/arp to lookup mac address"); 1283 } finally { 1284 try { 1285 if (reader != null) { 1286 reader.close(); 1287 } 1288 } 1289 catch (IOException e) { 1290 // Do nothing 1291 } 1292 } 1293 1294 return 0; 1295 } 1296 } 1297 1298 public void enableTdls(String remoteAddress, boolean enable) { 1299 if (remoteAddress == null) { 1300 throw new IllegalArgumentException("remoteAddress cannot be null"); 1301 } 1302 1303 TdlsTaskParams params = new TdlsTaskParams(); 1304 params.remoteIpAddress = remoteAddress; 1305 params.enable = enable; 1306 new TdlsTask().execute(params); 1307 } 1308 1309 1310 public void enableTdlsWithMacAddress(String remoteMacAddress, boolean enable) { 1311 if (remoteMacAddress == null) { 1312 throw new IllegalArgumentException("remoteMacAddress cannot be null"); 1313 } 1314 1315 mWifiStateMachine.enableTdls(remoteMacAddress, enable); 1316 } 1317 1318 /** 1319 * Get a reference to handler. This is used by a client to establish 1320 * an AsyncChannel communication with WifiService 1321 */ 1322 public Messenger getWifiServiceMessenger() { 1323 enforceAccessPermission(); 1324 enforceChangePermission(); 1325 return new Messenger(mClientHandler); 1326 } 1327 1328 /** 1329 * Disable an ephemeral network, i.e. network that is created thru a WiFi Scorer 1330 */ 1331 public void disableEphemeralNetwork(String SSID) { 1332 enforceAccessPermission(); 1333 enforceChangePermission(); 1334 mWifiStateMachine.disableEphemeralNetwork(SSID); 1335 } 1336 1337 /** 1338 * Get the IP and proxy configuration file 1339 */ 1340 public String getConfigFile() { 1341 enforceAccessPermission(); 1342 return mWifiStateMachine.getConfigFile(); 1343 } 1344 1345 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 1346 @Override 1347 public void onReceive(Context context, Intent intent) { 1348 String action = intent.getAction(); 1349 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1350 mWifiController.sendMessage(CMD_SCREEN_ON); 1351 } else if (action.equals(Intent.ACTION_USER_PRESENT)) { 1352 mWifiController.sendMessage(CMD_USER_PRESENT); 1353 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1354 mWifiController.sendMessage(CMD_SCREEN_OFF); 1355 } else if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { 1356 int pluggedType = intent.getIntExtra("plugged", 0); 1357 mWifiController.sendMessage(CMD_BATTERY_CHANGED, pluggedType, 0, null); 1358 } else if (action.equals(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED)) { 1359 int state = intent.getIntExtra(BluetoothAdapter.EXTRA_CONNECTION_STATE, 1360 BluetoothAdapter.STATE_DISCONNECTED); 1361 mWifiStateMachine.sendBluetoothAdapterStateChange(state); 1362 } else if (action.equals(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED)) { 1363 boolean emergencyMode = intent.getBooleanExtra("phoneinECMState", false); 1364 mWifiController.sendMessage(CMD_EMERGENCY_MODE_CHANGED, emergencyMode ? 1 : 0, 0); 1365 } else if (action.equals(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED)) { 1366 handleIdleModeChanged(); 1367 } 1368 } 1369 }; 1370 1371 /** 1372 * Observes settings changes to scan always mode. 1373 */ 1374 private void registerForScanModeChange() { 1375 ContentObserver contentObserver = new ContentObserver(null) { 1376 @Override 1377 public void onChange(boolean selfChange) { 1378 mSettingsStore.handleWifiScanAlwaysAvailableToggled(); 1379 mWifiController.sendMessage(CMD_SCAN_ALWAYS_MODE_CHANGED); 1380 } 1381 }; 1382 1383 mContext.getContentResolver().registerContentObserver( 1384 Settings.Global.getUriFor(Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE), 1385 false, contentObserver); 1386 } 1387 1388 private void registerForBroadcasts() { 1389 IntentFilter intentFilter = new IntentFilter(); 1390 intentFilter.addAction(Intent.ACTION_SCREEN_ON); 1391 intentFilter.addAction(Intent.ACTION_USER_PRESENT); 1392 intentFilter.addAction(Intent.ACTION_SCREEN_OFF); 1393 intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED); 1394 intentFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 1395 intentFilter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED); 1396 intentFilter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED); 1397 intentFilter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED); 1398 mContext.registerReceiver(mReceiver, intentFilter); 1399 } 1400 1401 private void registerForPackageOrUserRemoval() { 1402 IntentFilter intentFilter = new IntentFilter(); 1403 intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1404 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 1405 mContext.registerReceiverAsUser(new BroadcastReceiver() { 1406 @Override 1407 public void onReceive(Context context, Intent intent) { 1408 switch (intent.getAction()) { 1409 case Intent.ACTION_PACKAGE_REMOVED: { 1410 if (intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) { 1411 return; 1412 } 1413 int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); 1414 Uri uri = intent.getData(); 1415 if (uid == -1 || uri == null) { 1416 return; 1417 } 1418 String pkgName = uri.getSchemeSpecificPart(); 1419 mWifiStateMachine.removeAppConfigs(pkgName, uid); 1420 break; 1421 } 1422 case Intent.ACTION_USER_REMOVED: { 1423 int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); 1424 mWifiStateMachine.removeUserConfigs(userHandle); 1425 break; 1426 } 1427 } 1428 } 1429 }, UserHandle.ALL, intentFilter, null, null); 1430 } 1431 1432 @Override 1433 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1434 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1435 != PackageManager.PERMISSION_GRANTED) { 1436 pw.println("Permission Denial: can't dump WifiService from from pid=" 1437 + Binder.getCallingPid() 1438 + ", uid=" + Binder.getCallingUid()); 1439 return; 1440 } 1441 pw.println("Wi-Fi is " + mWifiStateMachine.syncGetWifiStateByName()); 1442 pw.println("Stay-awake conditions: " + 1443 Settings.Global.getInt(mContext.getContentResolver(), 1444 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 0)); 1445 pw.println("mMulticastEnabled " + mMulticastEnabled); 1446 pw.println("mMulticastDisabled " + mMulticastDisabled); 1447 pw.println("mInIdleMode " + mInIdleMode); 1448 pw.println("mScanPending " + mScanPending); 1449 mWifiController.dump(fd, pw, args); 1450 mSettingsStore.dump(fd, pw, args); 1451 mNotificationController.dump(fd, pw, args); 1452 mTrafficPoller.dump(fd, pw, args); 1453 1454 pw.println("Latest scan results:"); 1455 List<ScanResult> scanResults = mWifiStateMachine.syncGetScanResultsList(); 1456 long nowMs = System.currentTimeMillis(); 1457 if (scanResults != null && scanResults.size() != 0) { 1458 pw.println(" BSSID Frequency RSSI Age SSID " + 1459 " Flags"); 1460 for (ScanResult r : scanResults) { 1461 long ageSec = 0; 1462 long ageMilli = 0; 1463 if (nowMs > r.seen && r.seen > 0) { 1464 ageSec = (nowMs - r.seen) / 1000; 1465 ageMilli = (nowMs - r.seen) % 1000; 1466 } 1467 String candidate = " "; 1468 if (r.isAutoJoinCandidate > 0) candidate = "+"; 1469 pw.printf(" %17s %9d %5d %3d.%03d%s %-32s %s\n", 1470 r.BSSID, 1471 r.frequency, 1472 r.level, 1473 ageSec, ageMilli, 1474 candidate, 1475 r.SSID == null ? "" : r.SSID, 1476 r.capabilities); 1477 } 1478 } 1479 pw.println(); 1480 pw.println("Locks acquired: " + mFullLocksAcquired + " full, " + 1481 mFullHighPerfLocksAcquired + " full high perf, " + 1482 mScanLocksAcquired + " scan"); 1483 pw.println("Locks released: " + mFullLocksReleased + " full, " + 1484 mFullHighPerfLocksReleased + " full high perf, " + 1485 mScanLocksReleased + " scan"); 1486 pw.println(); 1487 pw.println("Locks held:"); 1488 mLocks.dump(pw); 1489 1490 pw.println("Multicast Locks held:"); 1491 for (Multicaster l : mMulticasters) { 1492 pw.print(" "); 1493 pw.println(l); 1494 } 1495 1496 mWifiWatchdogStateMachine.dump(fd, pw, args); 1497 pw.println(); 1498 mWifiStateMachine.dump(fd, pw, args); 1499 pw.println(); 1500 } 1501 1502 private class WifiLock extends DeathRecipient { 1503 WifiLock(int lockMode, String tag, IBinder binder, WorkSource ws) { 1504 super(lockMode, tag, binder, ws); 1505 } 1506 1507 public void binderDied() { 1508 synchronized (mLocks) { 1509 releaseWifiLockLocked(mBinder); 1510 } 1511 } 1512 1513 public String toString() { 1514 return "WifiLock{" + mTag + " type=" + mMode + " binder=" + mBinder + "}"; 1515 } 1516 } 1517 1518 class LockList { 1519 private List<WifiLock> mList; 1520 1521 private LockList() { 1522 mList = new ArrayList<WifiLock>(); 1523 } 1524 1525 synchronized boolean hasLocks() { 1526 return !mList.isEmpty(); 1527 } 1528 1529 synchronized int getStrongestLockMode() { 1530 if (mList.isEmpty()) { 1531 return WifiManager.WIFI_MODE_FULL; 1532 } 1533 1534 if (mFullHighPerfLocksAcquired > mFullHighPerfLocksReleased) { 1535 return WifiManager.WIFI_MODE_FULL_HIGH_PERF; 1536 } 1537 1538 if (mFullLocksAcquired > mFullLocksReleased) { 1539 return WifiManager.WIFI_MODE_FULL; 1540 } 1541 1542 return WifiManager.WIFI_MODE_SCAN_ONLY; 1543 } 1544 1545 synchronized void updateWorkSource(WorkSource ws) { 1546 for (int i = 0; i < mLocks.mList.size(); i++) { 1547 ws.add(mLocks.mList.get(i).mWorkSource); 1548 } 1549 } 1550 1551 private void addLock(WifiLock lock) { 1552 if (findLockByBinder(lock.mBinder) < 0) { 1553 mList.add(lock); 1554 } 1555 } 1556 1557 private WifiLock removeLock(IBinder binder) { 1558 int index = findLockByBinder(binder); 1559 if (index >= 0) { 1560 WifiLock ret = mList.remove(index); 1561 ret.unlinkDeathRecipient(); 1562 return ret; 1563 } else { 1564 return null; 1565 } 1566 } 1567 1568 private int findLockByBinder(IBinder binder) { 1569 int size = mList.size(); 1570 for (int i = size - 1; i >= 0; i--) { 1571 if (mList.get(i).mBinder == binder) 1572 return i; 1573 } 1574 return -1; 1575 } 1576 1577 private void dump(PrintWriter pw) { 1578 for (WifiLock l : mList) { 1579 pw.print(" "); 1580 pw.println(l); 1581 } 1582 } 1583 } 1584 1585 void enforceWakeSourcePermission(int uid, int pid) { 1586 if (uid == android.os.Process.myUid()) { 1587 return; 1588 } 1589 mContext.enforcePermission(android.Manifest.permission.UPDATE_DEVICE_STATS, 1590 pid, uid, null); 1591 } 1592 1593 public boolean acquireWifiLock(IBinder binder, int lockMode, String tag, WorkSource ws) { 1594 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 1595 if (lockMode != WifiManager.WIFI_MODE_FULL && 1596 lockMode != WifiManager.WIFI_MODE_SCAN_ONLY && 1597 lockMode != WifiManager.WIFI_MODE_FULL_HIGH_PERF) { 1598 Slog.e(TAG, "Illegal argument, lockMode= " + lockMode); 1599 if (DBG) throw new IllegalArgumentException("lockMode=" + lockMode); 1600 return false; 1601 } 1602 if (ws != null && ws.size() == 0) { 1603 ws = null; 1604 } 1605 if (ws != null) { 1606 enforceWakeSourcePermission(Binder.getCallingUid(), Binder.getCallingPid()); 1607 } 1608 if (ws == null) { 1609 ws = new WorkSource(Binder.getCallingUid()); 1610 } 1611 WifiLock wifiLock = new WifiLock(lockMode, tag, binder, ws); 1612 synchronized (mLocks) { 1613 return acquireWifiLockLocked(wifiLock); 1614 } 1615 } 1616 1617 private void noteAcquireWifiLock(WifiLock wifiLock) throws RemoteException { 1618 switch(wifiLock.mMode) { 1619 case WifiManager.WIFI_MODE_FULL: 1620 case WifiManager.WIFI_MODE_FULL_HIGH_PERF: 1621 case WifiManager.WIFI_MODE_SCAN_ONLY: 1622 mBatteryStats.noteFullWifiLockAcquiredFromSource(wifiLock.mWorkSource); 1623 break; 1624 } 1625 } 1626 1627 private void noteReleaseWifiLock(WifiLock wifiLock) throws RemoteException { 1628 switch(wifiLock.mMode) { 1629 case WifiManager.WIFI_MODE_FULL: 1630 case WifiManager.WIFI_MODE_FULL_HIGH_PERF: 1631 case WifiManager.WIFI_MODE_SCAN_ONLY: 1632 mBatteryStats.noteFullWifiLockReleasedFromSource(wifiLock.mWorkSource); 1633 break; 1634 } 1635 } 1636 1637 private boolean acquireWifiLockLocked(WifiLock wifiLock) { 1638 if (DBG) Slog.d(TAG, "acquireWifiLockLocked: " + wifiLock); 1639 1640 mLocks.addLock(wifiLock); 1641 1642 long ident = Binder.clearCallingIdentity(); 1643 try { 1644 noteAcquireWifiLock(wifiLock); 1645 switch(wifiLock.mMode) { 1646 case WifiManager.WIFI_MODE_FULL: 1647 ++mFullLocksAcquired; 1648 break; 1649 case WifiManager.WIFI_MODE_FULL_HIGH_PERF: 1650 ++mFullHighPerfLocksAcquired; 1651 break; 1652 1653 case WifiManager.WIFI_MODE_SCAN_ONLY: 1654 ++mScanLocksAcquired; 1655 break; 1656 } 1657 mWifiController.sendMessage(CMD_LOCKS_CHANGED); 1658 return true; 1659 } catch (RemoteException e) { 1660 return false; 1661 } finally { 1662 Binder.restoreCallingIdentity(ident); 1663 } 1664 } 1665 1666 public void updateWifiLockWorkSource(IBinder lock, WorkSource ws) { 1667 int uid = Binder.getCallingUid(); 1668 int pid = Binder.getCallingPid(); 1669 if (ws != null && ws.size() == 0) { 1670 ws = null; 1671 } 1672 if (ws != null) { 1673 enforceWakeSourcePermission(uid, pid); 1674 } 1675 long ident = Binder.clearCallingIdentity(); 1676 try { 1677 synchronized (mLocks) { 1678 int index = mLocks.findLockByBinder(lock); 1679 if (index < 0) { 1680 throw new IllegalArgumentException("Wifi lock not active"); 1681 } 1682 WifiLock wl = mLocks.mList.get(index); 1683 noteReleaseWifiLock(wl); 1684 wl.mWorkSource = ws != null ? new WorkSource(ws) : new WorkSource(uid); 1685 noteAcquireWifiLock(wl); 1686 } 1687 } catch (RemoteException e) { 1688 } finally { 1689 Binder.restoreCallingIdentity(ident); 1690 } 1691 } 1692 1693 public boolean releaseWifiLock(IBinder lock) { 1694 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 1695 synchronized (mLocks) { 1696 return releaseWifiLockLocked(lock); 1697 } 1698 } 1699 1700 private boolean releaseWifiLockLocked(IBinder lock) { 1701 boolean hadLock; 1702 1703 WifiLock wifiLock = mLocks.removeLock(lock); 1704 1705 if (DBG) Slog.d(TAG, "releaseWifiLockLocked: " + wifiLock); 1706 1707 hadLock = (wifiLock != null); 1708 1709 long ident = Binder.clearCallingIdentity(); 1710 try { 1711 if (hadLock) { 1712 noteReleaseWifiLock(wifiLock); 1713 switch(wifiLock.mMode) { 1714 case WifiManager.WIFI_MODE_FULL: 1715 ++mFullLocksReleased; 1716 break; 1717 case WifiManager.WIFI_MODE_FULL_HIGH_PERF: 1718 ++mFullHighPerfLocksReleased; 1719 break; 1720 case WifiManager.WIFI_MODE_SCAN_ONLY: 1721 ++mScanLocksReleased; 1722 break; 1723 } 1724 mWifiController.sendMessage(CMD_LOCKS_CHANGED); 1725 } 1726 } catch (RemoteException e) { 1727 } finally { 1728 Binder.restoreCallingIdentity(ident); 1729 } 1730 1731 return hadLock; 1732 } 1733 1734 private abstract class DeathRecipient 1735 implements IBinder.DeathRecipient { 1736 String mTag; 1737 int mMode; 1738 IBinder mBinder; 1739 WorkSource mWorkSource; 1740 1741 DeathRecipient(int mode, String tag, IBinder binder, WorkSource ws) { 1742 super(); 1743 mTag = tag; 1744 mMode = mode; 1745 mBinder = binder; 1746 mWorkSource = ws; 1747 try { 1748 mBinder.linkToDeath(this, 0); 1749 } catch (RemoteException e) { 1750 binderDied(); 1751 } 1752 } 1753 1754 void unlinkDeathRecipient() { 1755 mBinder.unlinkToDeath(this, 0); 1756 } 1757 } 1758 1759 private class Multicaster extends DeathRecipient { 1760 Multicaster(String tag, IBinder binder) { 1761 super(Binder.getCallingUid(), tag, binder, null); 1762 } 1763 1764 public void binderDied() { 1765 Slog.e(TAG, "Multicaster binderDied"); 1766 synchronized (mMulticasters) { 1767 int i = mMulticasters.indexOf(this); 1768 if (i != -1) { 1769 removeMulticasterLocked(i, mMode); 1770 } 1771 } 1772 } 1773 1774 public String toString() { 1775 return "Multicaster{" + mTag + " binder=" + mBinder + "}"; 1776 } 1777 1778 public int getUid() { 1779 return mMode; 1780 } 1781 } 1782 1783 public void initializeMulticastFiltering() { 1784 enforceMulticastChangePermission(); 1785 1786 synchronized (mMulticasters) { 1787 // if anybody had requested filters be off, leave off 1788 if (mMulticasters.size() != 0) { 1789 return; 1790 } else { 1791 mWifiStateMachine.startFilteringMulticastV4Packets(); 1792 } 1793 } 1794 } 1795 1796 public void acquireMulticastLock(IBinder binder, String tag) { 1797 enforceMulticastChangePermission(); 1798 1799 synchronized (mMulticasters) { 1800 mMulticastEnabled++; 1801 mMulticasters.add(new Multicaster(tag, binder)); 1802 // Note that we could call stopFilteringMulticastV4Packets only when 1803 // our new size == 1 (first call), but this function won't 1804 // be called often and by making the stopPacket call each 1805 // time we're less fragile and self-healing. 1806 mWifiStateMachine.stopFilteringMulticastV4Packets(); 1807 } 1808 1809 int uid = Binder.getCallingUid(); 1810 final long ident = Binder.clearCallingIdentity(); 1811 try { 1812 mBatteryStats.noteWifiMulticastEnabled(uid); 1813 } catch (RemoteException e) { 1814 } finally { 1815 Binder.restoreCallingIdentity(ident); 1816 } 1817 } 1818 1819 public void releaseMulticastLock() { 1820 enforceMulticastChangePermission(); 1821 1822 int uid = Binder.getCallingUid(); 1823 synchronized (mMulticasters) { 1824 mMulticastDisabled++; 1825 int size = mMulticasters.size(); 1826 for (int i = size - 1; i >= 0; i--) { 1827 Multicaster m = mMulticasters.get(i); 1828 if ((m != null) && (m.getUid() == uid)) { 1829 removeMulticasterLocked(i, uid); 1830 } 1831 } 1832 } 1833 } 1834 1835 private void removeMulticasterLocked(int i, int uid) 1836 { 1837 Multicaster removed = mMulticasters.remove(i); 1838 1839 if (removed != null) { 1840 removed.unlinkDeathRecipient(); 1841 } 1842 if (mMulticasters.size() == 0) { 1843 mWifiStateMachine.startFilteringMulticastV4Packets(); 1844 } 1845 1846 final long ident = Binder.clearCallingIdentity(); 1847 try { 1848 mBatteryStats.noteWifiMulticastDisabled(uid); 1849 } catch (RemoteException e) { 1850 } finally { 1851 Binder.restoreCallingIdentity(ident); 1852 } 1853 } 1854 1855 public boolean isMulticastEnabled() { 1856 enforceAccessPermission(); 1857 1858 synchronized (mMulticasters) { 1859 return (mMulticasters.size() > 0); 1860 } 1861 } 1862 1863 public WifiMonitor getWifiMonitor() { 1864 return mWifiStateMachine.getWifiMonitor(); 1865 } 1866 1867 public void enableVerboseLogging(int verbose) { 1868 enforceAccessPermission(); 1869 mWifiStateMachine.enableVerboseLogging(verbose); 1870 } 1871 1872 public int getVerboseLoggingLevel() { 1873 enforceAccessPermission(); 1874 return mWifiStateMachine.getVerboseLoggingLevel(); 1875 } 1876 1877 public void enableAggressiveHandover(int enabled) { 1878 enforceAccessPermission(); 1879 mWifiStateMachine.enableAggressiveHandover(enabled); 1880 } 1881 1882 public int getAggressiveHandover() { 1883 enforceAccessPermission(); 1884 return mWifiStateMachine.getAggressiveHandover(); 1885 } 1886 1887 public void setAllowScansWithTraffic(int enabled) { 1888 enforceAccessPermission(); 1889 mWifiStateMachine.setAllowScansWithTraffic(enabled); 1890 } 1891 1892 public int getAllowScansWithTraffic() { 1893 enforceAccessPermission(); 1894 return mWifiStateMachine.getAllowScansWithTraffic(); 1895 } 1896 1897 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1898 enforceChangePermission(); 1899 return mWifiStateMachine.enableAutoJoinWhenAssociated(enabled); 1900 } 1901 1902 public boolean getEnableAutoJoinWhenAssociated() { 1903 enforceAccessPermission(); 1904 return mWifiStateMachine.getEnableAutoJoinWhenAssociated(); 1905 } 1906 public void setHalBasedAutojoinOffload(int enabled) { 1907 enforceChangePermission(); 1908 mWifiStateMachine.setHalBasedAutojoinOffload(enabled); 1909 } 1910 1911 public int getHalBasedAutojoinOffload() { 1912 enforceAccessPermission(); 1913 return mWifiStateMachine.getHalBasedAutojoinOffload(); 1914 } 1915 1916 /* Return the Wifi Connection statistics object */ 1917 public WifiConnectionStatistics getConnectionStatistics() { 1918 enforceAccessPermission(); 1919 enforceReadCredentialPermission(); 1920 if (mWifiStateMachineChannel != null) { 1921 return mWifiStateMachine.syncGetConnectionStatistics(mWifiStateMachineChannel); 1922 } else { 1923 Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); 1924 return null; 1925 } 1926 } 1927 1928 public void factoryReset() { 1929 enforceConnectivityInternalPermission(); 1930 1931 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 1932 return; 1933 } 1934 1935 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 1936 // Turn mobile hotspot off 1937 setWifiApEnabled(null, false); 1938 } 1939 1940 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_WIFI)) { 1941 // Enable wifi 1942 setWifiEnabled(true); 1943 // Delete all Wifi SSIDs 1944 List<WifiConfiguration> networks = getConfiguredNetworks(); 1945 if (networks != null) { 1946 for (WifiConfiguration config : networks) { 1947 removeNetwork(config.networkId); 1948 } 1949 saveConfiguration(); 1950 } 1951 } 1952 } 1953 1954 /* private methods */ 1955 static boolean logAndReturnFalse(String s) { 1956 Log.d(TAG, s); 1957 return false; 1958 } 1959 1960 public static boolean isValid(WifiConfiguration config) { 1961 String validity = checkValidity(config); 1962 return validity == null || logAndReturnFalse(validity); 1963 } 1964 1965 public static boolean isValidPasspoint(WifiConfiguration config) { 1966 String validity = checkPasspointValidity(config); 1967 return validity == null || logAndReturnFalse(validity); 1968 } 1969 1970 public static String checkValidity(WifiConfiguration config) { 1971 if (config.allowedKeyManagement == null) 1972 return "allowed kmgmt"; 1973 1974 if (config.allowedKeyManagement.cardinality() > 1) { 1975 if (config.allowedKeyManagement.cardinality() != 2) { 1976 return "cardinality != 2"; 1977 } 1978 if (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_EAP)) { 1979 return "not WPA_EAP"; 1980 } 1981 if ((!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.IEEE8021X)) 1982 && (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK))) { 1983 return "not PSK or 8021X"; 1984 } 1985 } 1986 return null; 1987 } 1988 1989 public static String checkPasspointValidity(WifiConfiguration config) { 1990 if (!TextUtils.isEmpty(config.FQDN)) { 1991 /* this is passpoint configuration; it must not have an SSID */ 1992 if (!TextUtils.isEmpty(config.SSID)) { 1993 return "SSID not expected for Passpoint: '" + config.SSID + 1994 "' FQDN " + toHexString(config.FQDN); 1995 } 1996 /* this is passpoint configuration; it must have a providerFriendlyName */ 1997 if (TextUtils.isEmpty(config.providerFriendlyName)) { 1998 return "no provider friendly name"; 1999 } 2000 WifiEnterpriseConfig enterpriseConfig = config.enterpriseConfig; 2001 /* this is passpoint configuration; it must have enterprise config */ 2002 if (enterpriseConfig == null 2003 || enterpriseConfig.getEapMethod() == WifiEnterpriseConfig.Eap.NONE ) { 2004 return "no enterprise config"; 2005 } 2006 if ((enterpriseConfig.getEapMethod() == WifiEnterpriseConfig.Eap.TLS || 2007 enterpriseConfig.getEapMethod() == WifiEnterpriseConfig.Eap.TTLS || 2008 enterpriseConfig.getEapMethod() == WifiEnterpriseConfig.Eap.PEAP) && 2009 enterpriseConfig.getCaCertificate() == null) { 2010 return "no CA certificate"; 2011 } 2012 } 2013 return null; 2014 } 2015 2016 public Network getCurrentNetwork() { 2017 enforceAccessPermission(); 2018 return mWifiStateMachine.getCurrentNetwork(); 2019 } 2020 2021 public static String toHexString(String s) { 2022 if (s == null) { 2023 return "null"; 2024 } 2025 StringBuilder sb = new StringBuilder(); 2026 sb.append('\'').append(s).append('\''); 2027 for (int n = 0; n < s.length(); n++) { 2028 sb.append(String.format(" %02x", s.charAt(n) & 0xffff)); 2029 } 2030 return sb.toString(); 2031 } 2032 2033 /** 2034 * Checks that calling process has android.Manifest.permission.ACCESS_COARSE_LOCATION or 2035 * android.Manifest.permission.ACCESS_FINE_LOCATION and a corresponding app op is allowed 2036 */ 2037 private boolean checkCallerHasLocationPermission(String callingPackage, int uid) { 2038 if (ActivityManager.checkUidPermission(Manifest.permission.ACCESS_FINE_LOCATION, uid) 2039 == PackageManager.PERMISSION_GRANTED 2040 && isAppOppAllowed(AppOpsManager.OP_FINE_LOCATION, callingPackage, uid)) { 2041 return true; 2042 } 2043 2044 if (ActivityManager.checkUidPermission(Manifest.permission.ACCESS_COARSE_LOCATION, uid) 2045 == PackageManager.PERMISSION_GRANTED 2046 && isAppOppAllowed(AppOpsManager.OP_COARSE_LOCATION, callingPackage, uid)) { 2047 return true; 2048 } 2049 // Enforce location permission for apps targeting MNC and later versions 2050 boolean enforceLocationPermission = true; 2051 try { 2052 enforceLocationPermission = mContext.getPackageManager().getApplicationInfo( 2053 callingPackage, 0).targetSdkVersion >= Build.VERSION_CODES.MNC; 2054 } catch (PackageManager.NameNotFoundException e) { 2055 // In case of exception, enforce permission anyway 2056 } 2057 if (enforceLocationPermission) { 2058 throw new SecurityException("Need ACCESS_COARSE_LOCATION or " 2059 + "ACCESS_FINE_LOCATION permission to get scan results"); 2060 } else { 2061 Log.e(TAG, "Permission denial: Need ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION " 2062 + "permission to get scan results"); 2063 } 2064 return false; 2065 } 2066 2067 private boolean isAppOppAllowed(int op, String callingPackage, int uid) { 2068 return mAppOps.noteOp(op, uid, callingPackage) == AppOpsManager.MODE_ALLOWED; 2069 } 2070 2071} 2072