WifiStateMachine.java revision 6194a637d789ec915d58c3f569618cb3ad43a93b
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.WIFI_AP_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 24import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 25import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 26import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 27import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 28/** 29 * TODO: 30 * Deprecate WIFI_STATE_UNKNOWN 31 */ 32import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 33 34import android.Manifest; 35import android.app.ActivityManager; 36import android.app.AlarmManager; 37import android.app.PendingIntent; 38import android.app.backup.IBackupManager; 39import android.bluetooth.BluetoothAdapter; 40import android.content.BroadcastReceiver; 41import android.content.Context; 42import android.content.Intent; 43import android.content.IntentFilter; 44import android.content.pm.ApplicationInfo; 45import android.content.pm.IPackageManager; 46import android.content.pm.PackageManager; 47import android.database.ContentObserver; 48import android.net.ConnectivityManager; 49import android.net.DhcpResults; 50import android.net.BaseDhcpStateMachine; 51import android.net.DhcpStateMachine; 52import android.net.Network; 53import android.net.dhcp.DhcpClient; 54import android.net.InterfaceConfiguration; 55import android.net.IpReachabilityMonitor; 56import android.net.LinkAddress; 57import android.net.LinkProperties; 58import android.net.NetworkAgent; 59import android.net.NetworkCapabilities; 60import android.net.NetworkFactory; 61import android.net.NetworkInfo; 62import android.net.NetworkInfo.DetailedState; 63import android.net.NetworkRequest; 64import android.net.NetworkUtils; 65import android.net.RouteInfo; 66import android.net.StaticIpConfiguration; 67import android.net.TrafficStats; 68import android.net.wifi.RssiPacketCountInfo; 69import android.net.wifi.ScanResult; 70import android.net.wifi.ScanSettings; 71import android.net.wifi.SupplicantState; 72import android.net.wifi.WifiChannel; 73import android.net.wifi.WifiConfiguration; 74import android.net.wifi.WifiConnectionStatistics; 75import android.net.wifi.WifiEnterpriseConfig; 76import android.net.wifi.WifiInfo; 77import android.net.wifi.WifiLinkLayerStats; 78import android.net.wifi.WifiManager; 79import android.net.wifi.WifiScanner; 80import android.net.wifi.WifiSsid; 81import android.net.wifi.WpsInfo; 82import android.net.wifi.WpsResult; 83import android.net.wifi.WpsResult.Status; 84import android.net.wifi.p2p.IWifiP2pManager; 85import android.os.BatteryStats; 86import android.os.Binder; 87import android.os.Bundle; 88import android.os.IBinder; 89import android.os.INetworkManagementService; 90import android.os.Looper; 91import android.os.Message; 92import android.os.Messenger; 93import android.os.PowerManager; 94import android.os.Process; 95import android.os.RemoteException; 96import android.os.ServiceManager; 97import android.os.SystemClock; 98import android.os.SystemProperties; 99import android.os.UserHandle; 100import android.os.WorkSource; 101import android.provider.Settings; 102import android.telephony.TelephonyManager; 103import android.text.TextUtils; 104import android.util.Log; 105import android.util.LruCache; 106 107import com.android.internal.R; 108import com.android.internal.app.IBatteryStats; 109import com.android.internal.util.AsyncChannel; 110import com.android.internal.util.Protocol; 111import com.android.internal.util.State; 112import com.android.internal.util.StateMachine; 113import com.android.server.connectivity.KeepalivePacketData; 114import com.android.server.net.NetlinkTracker; 115import com.android.server.wifi.hotspot2.NetworkDetail; 116import com.android.server.wifi.hotspot2.SupplicantBridge; 117import com.android.server.wifi.hotspot2.Utils; 118import com.android.server.wifi.p2p.WifiP2pServiceImpl; 119 120import java.io.BufferedReader; 121import java.io.FileDescriptor; 122import java.io.FileNotFoundException; 123import java.io.FileReader; 124import java.io.IOException; 125import java.io.PrintWriter; 126import java.net.Inet4Address; 127import java.net.InetAddress; 128import java.util.ArrayList; 129import java.util.Arrays; 130import java.util.Calendar; 131import java.util.HashSet; 132import java.util.LinkedList; 133import java.util.List; 134import java.util.Locale; 135import java.util.Queue; 136import java.util.Random; 137import java.util.concurrent.atomic.AtomicBoolean; 138import java.util.concurrent.atomic.AtomicInteger; 139import java.util.regex.Pattern; 140 141/** 142 * Track the state of Wifi connectivity. All event handling is done here, 143 * and all changes in connectivity state are initiated here. 144 * 145 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 146 * In the current implementation, we support concurrent wifi p2p and wifi operation. 147 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 148 * handles p2p operation. 149 * 150 * @hide 151 */ 152public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler, 153 WifiNative.WifiRssiEventHandler { 154 155 private static final String NETWORKTYPE = "WIFI"; 156 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 157 private static boolean DBG = false; 158 private static boolean VDBG = false; 159 private static boolean VVDBG = false; 160 private static boolean USE_PAUSE_SCANS = false; 161 private static boolean mLogMessages = false; 162 private static final String TAG = "WifiStateMachine"; 163 164 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 165 166 private static final String GOOGLE_OUI = "DA-A1-19"; 167 168 /* temporary debug flag - best network selection development */ 169 private static boolean PDBG = false; 170 171 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 172 * the corresponding BSSID. 173 */ 174 private boolean didBlackListBSSID = false; 175 176 /** 177 * Log with error attribute 178 * 179 * @param s is string log 180 */ 181 protected void loge(String s) { 182 Log.e(getName(), s); 183 } 184 protected void logd(String s) { 185 Log.d(getName(), s); 186 } 187 protected void log(String s) {; 188 Log.d(getName(), s); 189 } 190 191 private WifiMonitor mWifiMonitor; 192 private WifiNative mWifiNative; 193 private WifiConfigStore mWifiConfigStore; 194 private WifiAutoJoinController mWifiAutoJoinController; 195 private INetworkManagementService mNwService; 196 private ConnectivityManager mCm; 197 private WifiLogger mWifiLogger; 198 private WifiApConfigStore mWifiApConfigStore; 199 private final boolean mP2pSupported; 200 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 201 private boolean mTemporarilyDisconnectWifi = false; 202 private final String mPrimaryDeviceType; 203 204 /* Scan results handling */ 205 private List<ScanDetail> mScanResults = new ArrayList<>(); 206 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 207 private static final int SCAN_RESULT_CACHE_SIZE = 160; 208 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 209 // For debug, number of known scan results that were found as part of last scan result event, 210 // as well the number of scans results returned by the supplicant with that message 211 private int mNumScanResultsKnown; 212 private int mNumScanResultsReturned; 213 214 private boolean mScreenOn = false; 215 216 /* Chipset supports background scan */ 217 private final boolean mBackgroundScanSupported; 218 219 private final String mInterfaceName; 220 /* Tethering interface could be separate from wlan interface */ 221 private String mTetherInterfaceName; 222 223 private int mLastSignalLevel = -1; 224 private String mLastBssid; 225 private int mLastNetworkId; // The network Id we successfully joined 226 private boolean linkDebouncing = false; 227 228 private boolean mHalBasedPnoDriverSupported = false; 229 230 // Below booleans are configurations coming from the Developper Settings 231 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 232 private boolean mHalBasedPnoEnableInDevSettings = false; 233 234 235 private int mHalFeatureSet = 0; 236 private static int mPnoResultFound = 0; 237 238 @Override 239 public void onPnoNetworkFound(ScanResult results[]) { 240 if (DBG) { 241 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 242 for (int i = 0; i < results.length; i++) { 243 Log.e(TAG, results[i].toString()); 244 } 245 } 246 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 247 } 248 249 public void processPnoNetworkFound(ScanResult results[]) { 250 ScanSettings settings = new ScanSettings(); 251 settings.channelSet = new ArrayList<WifiChannel>(); 252 StringBuilder sb = new StringBuilder(); 253 sb.append(""); 254 for (int i=0; i<results.length; i++) { 255 WifiChannel channel = new WifiChannel(); 256 channel.freqMHz = results[i].frequency; 257 settings.channelSet.add(channel); 258 sb.append(results[i].SSID).append(" "); 259 } 260 261 stopPnoOffload(); 262 263 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 264 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 265 mPnoResultFound ++; 266 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 267 int delay = 30 * 1000; 268 // reconfigure Pno after 1 minutes if we're still in disconnected state 269 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 270 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 271 (long)delay); 272 mRestartAutoJoinOffloadCounter++; 273 } 274 275 @Override 276 public void onRssiThresholdBreached(byte curRssi) { 277 if (DBG) { 278 Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi); 279 } 280 sendMessage(CMD_RSSI_THRESHOLD_BREACH, curRssi); 281 } 282 283 public void processRssiThreshold(byte curRssi) { 284 for (int i = 0; i < mRssiRanges.length; i++) { 285 if (curRssi < mRssiRanges[i]) { 286 // Assume sorted values(ascending order) for rssi, 287 // bounded by high(127) and low(-127) at extremeties 288 byte maxRssi = mRssiRanges[i]; 289 byte minRssi = mRssiRanges[i-1]; 290 Log.d(TAG, "Re-program rssi thresholds" + "maxRssi=" + maxRssi 291 + " minRssi=" + minRssi + " curRssi=" + curRssi); 292 // This value of hw has to be believed as this value is averaged and has breached 293 // the rssi thresholds and raised event to host. This would be eggregious if this 294 // value is invalid 295 mWifiInfo.setRssi((int) curRssi); 296 updateCapabilities(getCurrentWifiConfiguration()); 297 int ret = startRssiMonitoringOffload(maxRssi, minRssi); 298 Log.d(TAG, "Post re-programming rssi threshold ret = " + ret); 299 break; 300 } 301 } 302 } 303 public void registerNetworkDisabled(int netId) { 304 // Restart legacy PNO and autojoin offload if needed 305 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 306 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 307 mRestartAutoJoinOffloadCounter++; 308 } 309 310 // Testing various network disconnect cases by sending lots of spurious 311 // disconnect to supplicant 312 private boolean testNetworkDisconnect = false; 313 314 private boolean mEnableRssiPolling = false; 315 private boolean mLegacyPnoEnabled = false; 316 private int mRssiPollToken = 0; 317 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 318 * In CONNECT_MODE, the STA can scan and connect to an access point 319 * In SCAN_ONLY_MODE, the STA can only scan for access points 320 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 321 */ 322 private int mOperationalMode = CONNECT_MODE; 323 private boolean mIsScanOngoing = false; 324 private boolean mIsFullScanOngoing = false; 325 private boolean mSendScanResultsBroadcast = false; 326 327 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 328 private WorkSource mScanWorkSource = null; 329 private static final int UNKNOWN_SCAN_SOURCE = -1; 330 private static final int SCAN_ALARM_SOURCE = -2; 331 private static final int ADD_OR_UPDATE_SOURCE = -3; 332 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 333 private static final int ENABLE_WIFI = -5; 334 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 335 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 336 337 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 338 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 339 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 340 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 341 342 /* Tracks if state machine has received any screen state change broadcast yet. 343 * We can miss one of these at boot. 344 */ 345 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 346 347 private boolean mBluetoothConnectionActive = false; 348 349 private PowerManager.WakeLock mSuspendWakeLock; 350 351 /** 352 * Interval in milliseconds between polling for RSSI 353 * and linkspeed information 354 */ 355 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 356 357 /** 358 * Interval in milliseconds between receiving a disconnect event 359 * while connected to a good AP, and handling the disconnect proper 360 */ 361 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 362 363 /** 364 * Delay between supplicant restarts upon failure to establish connection 365 */ 366 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 367 368 /** 369 * Number of times we attempt to restart supplicant 370 */ 371 private static final int SUPPLICANT_RESTART_TRIES = 5; 372 373 private int mSupplicantRestartCount = 0; 374 /* Tracks sequence number on stop failure message */ 375 private int mSupplicantStopFailureToken = 0; 376 377 /** 378 * Tether state change notification time out 379 */ 380 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 381 382 /* Tracks sequence number on a tether notification time out */ 383 private int mTetherToken = 0; 384 385 /** 386 * Driver start time out. 387 */ 388 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 389 390 /* Tracks sequence number on a driver time out */ 391 private int mDriverStartToken = 0; 392 393 /** 394 * Don't select new network when previous network selection is 395 * pending connection for this much time 396 */ 397 private static final int CONNECT_TIMEOUT_MSEC = 3000; 398 399 /** 400 * The link properties of the wifi interface. 401 * Do not modify this directly; use updateLinkProperties instead. 402 */ 403 private LinkProperties mLinkProperties; 404 405 /* Tracks sequence number on a periodic scan message */ 406 private int mPeriodicScanToken = 0; 407 408 // Wakelock held during wifi start/stop and driver load/unload 409 private PowerManager.WakeLock mWakeLock; 410 411 private Context mContext; 412 413 private final Object mDhcpResultsLock = new Object(); 414 private DhcpResults mDhcpResults; 415 416 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 417 private WifiInfo mWifiInfo; 418 private NetworkInfo mNetworkInfo; 419 private NetworkCapabilities mNetworkCapabilities; 420 private SupplicantStateTracker mSupplicantStateTracker; 421 private BaseDhcpStateMachine mDhcpStateMachine; 422 private boolean mDhcpActive = false; 423 424 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 425 426 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 427 428 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 429 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 430 431 // Roaming failure count 432 private int mRoamFailCount = 0; 433 434 // This is the BSSID we are trying to associate to, it can be set to "any" 435 // if we havent selected a BSSID for joining. 436 // if we havent selected a BSSID for joining. 437 // The BSSID we are associated to is found in mWifiInfo 438 private String mTargetRoamBSSID = "any"; 439 440 private long mLastDriverRoamAttempt = 0; 441 442 private WifiConfiguration targetWificonfiguration = null; 443 444 // Used as debug to indicate which configuration last was saved 445 private WifiConfiguration lastSavedConfigurationAttempt = null; 446 447 // Used as debug to indicate which configuration last was removed 448 private WifiConfiguration lastForgetConfigurationAttempt = null; 449 450 //Random used by softAP channel Selection 451 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 452 453 boolean isRoaming() { 454 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 455 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 456 } 457 458 public void autoRoamSetBSSID(int netId, String bssid) { 459 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 460 } 461 462 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 463 boolean ret = true; 464 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 465 if (bssid == null) bssid = "any"; 466 if (config == null) return false; // Nothing to do 467 468 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 469 return false; // We didnt change anything 470 } 471 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 472 // Changing to ANY 473 if (!mWifiConfigStore.roamOnAny) { 474 ret = false; // Nothing to do 475 } 476 } 477 if (VDBG) { 478 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 479 } 480 config.autoJoinBSSID = bssid; 481 mTargetRoamBSSID = bssid; 482 mWifiConfigStore.saveWifiConfigBSSID(config); 483 return ret; 484 } 485 486 /** 487 * Save the UID correctly depending on if this is a new or existing network. 488 * @return true if operation is authorized, false otherwise 489 */ 490 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 491 if (!mWifiConfigStore.isNetworkConfigured(config)) { 492 config.creatorUid = uid; 493 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 494 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 495 return false; 496 } 497 498 config.lastUpdateUid = uid; 499 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 500 501 return true; 502 503 } 504 505 /** 506 * Checks to see if user has specified if the apps configuration is connectable. 507 * If the user hasn't specified we query the user and return true. 508 * 509 * @param message The message to be deferred 510 * @param netId Network id of the configuration to check against 511 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 512 * CONFIG_OVERRIDE_PERMISSION 513 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 514 */ 515 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 516 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 517 518 // We can only evaluate saved configurations. 519 if (config == null) { 520 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 521 return true; 522 } 523 524 switch (config.userApproved) { 525 case WifiConfiguration.USER_APPROVED: 526 case WifiConfiguration.USER_BANNED: 527 return false; 528 case WifiConfiguration.USER_PENDING: 529 default: // USER_UNSPECIFIED 530 /* the intention was to ask user here; but a dialog box is * 531 * too invasive; so we are going to allow connection for now */ 532 config.userApproved = WifiConfiguration.USER_APPROVED; 533 return false; 534 } 535 } 536 537 /** 538 * Subset of link properties coming from netlink. 539 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 540 * and domains obtained from router advertisements (RFC 6106). 541 */ 542 private NetlinkTracker mNetlinkTracker; 543 544 private IpReachabilityMonitor mIpReachabilityMonitor; 545 546 private AlarmManager mAlarmManager; 547 private PendingIntent mScanIntent; 548 private PendingIntent mDriverStopIntent; 549 private PendingIntent mPnoIntent; 550 551 private int mDisconnectedPnoAlarmCount = 0; 552 /* Tracks current frequency mode */ 553 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 554 555 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 556 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 557 558 // Channel for sending replies. 559 private AsyncChannel mReplyChannel = new AsyncChannel(); 560 561 private WifiP2pServiceImpl mWifiP2pServiceImpl; 562 563 // Used to initiate a connection with WifiP2pService 564 private AsyncChannel mWifiP2pChannel; 565 private AsyncChannel mWifiApConfigChannel; 566 567 private WifiScanner mWifiScanner; 568 569 private int mConnectionRequests = 0; 570 private WifiNetworkFactory mNetworkFactory; 571 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 572 private WifiNetworkAgent mNetworkAgent; 573 574 private String[] mWhiteListedSsids = null; 575 576 private byte[] mRssiRanges; 577 578 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 579 // We should really persist that into the networkHistory.txt file, and read it back when 580 // WifiStateMachine starts up 581 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 582 583 // Used to filter out requests we couldn't possibly satisfy. 584 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 585 586 /* The base for wifi message types */ 587 static final int BASE = Protocol.BASE_WIFI; 588 /* Start the supplicant */ 589 static final int CMD_START_SUPPLICANT = BASE + 11; 590 /* Stop the supplicant */ 591 static final int CMD_STOP_SUPPLICANT = BASE + 12; 592 /* Start the driver */ 593 static final int CMD_START_DRIVER = BASE + 13; 594 /* Stop the driver */ 595 static final int CMD_STOP_DRIVER = BASE + 14; 596 /* Indicates Static IP succeeded */ 597 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 598 /* Indicates Static IP failed */ 599 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 600 /* Indicates supplicant stop failed */ 601 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 602 /* Delayed stop to avoid shutting down driver too quick*/ 603 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 604 /* A delayed message sent to start driver when it fail to come up */ 605 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 606 607 /* Start the soft access point */ 608 static final int CMD_START_AP = BASE + 21; 609 /* Indicates soft ap start succeeded */ 610 static final int CMD_START_AP_SUCCESS = BASE + 22; 611 /* Indicates soft ap start failed */ 612 static final int CMD_START_AP_FAILURE = BASE + 23; 613 /* Stop the soft access point */ 614 static final int CMD_STOP_AP = BASE + 24; 615 /* Set the soft access point configuration */ 616 static final int CMD_SET_AP_CONFIG = BASE + 25; 617 /* Soft access point configuration set completed */ 618 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 619 /* Request the soft access point configuration */ 620 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 621 /* Response to access point configuration request */ 622 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 623 /* Invoked when getting a tether state change notification */ 624 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 625 /* A delayed message sent to indicate tether state change failed to arrive */ 626 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 627 628 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 629 630 /* Supplicant commands */ 631 /* Is supplicant alive ? */ 632 static final int CMD_PING_SUPPLICANT = BASE + 51; 633 /* Add/update a network configuration */ 634 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 635 /* Delete a network */ 636 static final int CMD_REMOVE_NETWORK = BASE + 53; 637 /* Enable a network. The device will attempt a connection to the given network. */ 638 static final int CMD_ENABLE_NETWORK = BASE + 54; 639 /* Enable all networks */ 640 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 641 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 642 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 643 /* Clear the blacklist network list */ 644 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 645 /* Save configuration */ 646 static final int CMD_SAVE_CONFIG = BASE + 58; 647 /* Get configured networks */ 648 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 649 /* Get available frequencies */ 650 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 651 /* Get adaptors */ 652 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 653 /* Get configured networks with real preSharedKey */ 654 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 655 /* Get Link Layer Stats thru HAL */ 656 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 657 /* Supplicant commands after driver start*/ 658 /* Initiate a scan */ 659 static final int CMD_START_SCAN = BASE + 71; 660 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 661 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 662 /* Disconnect from a network */ 663 static final int CMD_DISCONNECT = BASE + 73; 664 /* Reconnect to a network */ 665 static final int CMD_RECONNECT = BASE + 74; 666 /* Reassociate to a network */ 667 static final int CMD_REASSOCIATE = BASE + 75; 668 /* Get Connection Statistis */ 669 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 670 671 /* Controls suspend mode optimizations 672 * 673 * When high perf mode is enabled, suspend mode optimizations are disabled 674 * 675 * When high perf mode is disabled, suspend mode optimizations are enabled 676 * 677 * Suspend mode optimizations include: 678 * - packet filtering 679 * - turn off roaming 680 * - DTIM wake up settings 681 */ 682 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 683 /* Set the country code */ 684 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 685 /* Enables RSSI poll */ 686 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 687 /* RSSI poll */ 688 static final int CMD_RSSI_POLL = BASE + 83; 689 /* Set up packet filtering */ 690 static final int CMD_START_PACKET_FILTERING = BASE + 84; 691 /* Clear packet filter */ 692 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 693 /* Enable suspend mode optimizations in the driver */ 694 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 695 /* Delayed NETWORK_DISCONNECT */ 696 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 697 /* When there are no saved networks, we do a periodic scan to notify user of 698 * an open network */ 699 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 700 /* Test network Disconnection NETWORK_DISCONNECT */ 701 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 702 703 private int testNetworkDisconnectCounter = 0; 704 705 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 706 static final int MULTICAST_V6 = 1; 707 static final int MULTICAST_V4 = 0; 708 709 /* Set the frequency band */ 710 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 711 /* Enable TDLS on a specific MAC address */ 712 static final int CMD_ENABLE_TDLS = BASE + 92; 713 /* DHCP/IP configuration watchdog */ 714 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 715 716 /** 717 * Watchdog for protecting against b/16823537 718 * Leave time for 4-way handshake to succeed 719 */ 720 static final int ROAM_GUARD_TIMER_MSEC = 15000; 721 722 int roamWatchdogCount = 0; 723 /* Roam state watchdog */ 724 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 725 /* Screen change intent handling */ 726 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 727 728 /* Disconnecting state watchdog */ 729 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 730 731 /* Remove a packages associated configrations */ 732 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 733 734 /* Disable an ephemeral network */ 735 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 736 737 /* Get matching network */ 738 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 739 740 /* alert from firmware */ 741 static final int CMD_FIRMWARE_ALERT = BASE + 100; 742 743 /** 744 * Make this timer 40 seconds, which is about the normal DHCP timeout. 745 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 746 * for more than 30 seconds. 747 */ 748 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 749 750 int obtainingIpWatchdogCount = 0; 751 752 /* Commands from/to the SupplicantStateTracker */ 753 /* Reset the supplicant state tracker */ 754 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 755 756 int disconnectingWatchdogCount = 0; 757 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 758 759 /* P2p commands */ 760 /* We are ok with no response here since we wont do much with it anyway */ 761 public static final int CMD_ENABLE_P2P = BASE + 131; 762 /* In order to shut down supplicant cleanly, we wait till p2p has 763 * been disabled */ 764 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 765 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 766 767 public static final int CMD_BOOT_COMPLETED = BASE + 134; 768 769 /* We now have a valid IP configuration. */ 770 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 771 /* We no longer have a valid IP configuration. */ 772 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 773 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 774 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 775 776 /* Supplicant is trying to associate to a given BSSID */ 777 static final int CMD_TARGET_BSSID = BASE + 141; 778 779 /* Reload all networks and reconnect */ 780 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 781 782 static final int CMD_AUTO_CONNECT = BASE + 143; 783 784 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 785 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 786 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 787 788 static final int CMD_UNWANTED_NETWORK = BASE + 144; 789 790 static final int CMD_AUTO_ROAM = BASE + 145; 791 792 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 793 794 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 795 796 static final int CMD_NETWORK_STATUS = BASE + 148; 797 798 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 799 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 800 801 /* Remove a packages associated configrations */ 802 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 803 804 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 805 806 /* used to restart PNO when it was stopped due to association attempt */ 807 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 808 809 static int mRestartAutoJoinOffloadCounter = 0; 810 811 /* used to log if PNO was started */ 812 static final int CMD_STARTED_PNO_DBG = BASE + 155; 813 814 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 815 816 /* used to log if PNO was started */ 817 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 818 819 /* used to log if GSCAN was started */ 820 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 821 822 /* used to offload sending IP packet */ 823 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 824 825 /* used to stop offload sending IP packet */ 826 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 827 828 /* used to start rssi monitoring in hw */ 829 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 830 831 /* used to stop rssi moniroting in hw */ 832 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 833 834 /* used to indicated RSSI threshold breach in hw */ 835 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 836 837 838 839 /* Wifi state machine modes of operation */ 840 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 841 public static final int CONNECT_MODE = 1; 842 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 843 public static final int SCAN_ONLY_MODE = 2; 844 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 845 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 846 847 private static final int SUCCESS = 1; 848 private static final int FAILURE = -1; 849 850 /* Tracks if suspend optimizations need to be disabled by DHCP, 851 * screen or due to high perf mode. 852 * When any of them needs to disable it, we keep the suspend optimizations 853 * disabled 854 */ 855 private int mSuspendOptNeedsDisabled = 0; 856 857 private static final int SUSPEND_DUE_TO_DHCP = 1; 858 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 859 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 860 861 /* Tracks if user has enabled suspend optimizations through settings */ 862 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 863 864 /** 865 * Default framework scan interval in milliseconds. This is used in the scenario in which 866 * wifi chipset does not support background scanning to set up a 867 * periodic wake up scan so that the device can connect to a new access 868 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 869 * override this. 870 */ 871 private final int mDefaultFrameworkScanIntervalMs; 872 873 874 /** 875 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 876 */ 877 private final int mNoNetworksPeriodicScan; 878 879 /** 880 * Supplicant scan interval in milliseconds. 881 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 882 * from the default config if the setting is not set 883 */ 884 private long mSupplicantScanIntervalMs; 885 886 /** 887 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 888 */ 889 private long lastFullBandConnectedTimeMilli; 890 891 /** 892 * time interval to the next full band scan we will perform for 893 * autojoin while connected with screen lit 894 */ 895 private long fullBandConnectedTimeIntervalMilli; 896 897 /** 898 * max time interval to the next full band scan we will perform for 899 * autojoin while connected with screen lit 900 * Max time is 5 minutes 901 */ 902 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 903 904 /** 905 * Minimum time interval between enabling all networks. 906 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 907 * due to enabling every time. We add a threshold to avoid this. 908 */ 909 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 910 private long mLastEnableAllNetworksTime; 911 912 int mRunningBeaconCount = 0; 913 914 /** 915 * Starting and shutting down driver too quick causes problems leading to driver 916 * being in a bad state. Delay driver stop. 917 */ 918 private final int mDriverStopDelayMs; 919 private int mDelayedStopCounter; 920 private boolean mInDelayedStop = false; 921 922 // there is a delay between StateMachine change country code and Supplicant change country code 923 // here save the current WifiStateMachine set country code 924 private volatile String mSetCountryCode = null; 925 926 // config option that indicate whether or not to reset country code to default when 927 // cellular radio indicates country code loss 928 private boolean mRevertCountryCodeOnCellularLoss = false; 929 930 private String mDefaultCountryCode; 931 932 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 933 934 // Supplicant doesn't like setting the same country code multiple times (it may drop 935 // currently connected network), so we save the current device set country code here to avoid 936 // redundency 937 private String mDriverSetCountryCode = null; 938 939 /* Default parent state */ 940 private State mDefaultState = new DefaultState(); 941 /* Temporary initial state */ 942 private State mInitialState = new InitialState(); 943 /* Driver loaded, waiting for supplicant to start */ 944 private State mSupplicantStartingState = new SupplicantStartingState(); 945 /* Driver loaded and supplicant ready */ 946 private State mSupplicantStartedState = new SupplicantStartedState(); 947 /* Waiting for supplicant to stop and monitor to exit */ 948 private State mSupplicantStoppingState = new SupplicantStoppingState(); 949 /* Driver start issued, waiting for completed event */ 950 private State mDriverStartingState = new DriverStartingState(); 951 /* Driver started */ 952 private State mDriverStartedState = new DriverStartedState(); 953 /* Wait until p2p is disabled 954 * This is a special state which is entered right after we exit out of DriverStartedState 955 * before transitioning to another state. 956 */ 957 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 958 /* Driver stopping */ 959 private State mDriverStoppingState = new DriverStoppingState(); 960 /* Driver stopped */ 961 private State mDriverStoppedState = new DriverStoppedState(); 962 /* Scan for networks, no connection will be established */ 963 private State mScanModeState = new ScanModeState(); 964 /* Connecting to an access point */ 965 private State mConnectModeState = new ConnectModeState(); 966 /* Connected at 802.11 (L2) level */ 967 private State mL2ConnectedState = new L2ConnectedState(); 968 /* fetching IP after connection to access point (assoc+auth complete) */ 969 private State mObtainingIpState = new ObtainingIpState(); 970 /* Waiting for link quality verification to be complete */ 971 private State mVerifyingLinkState = new VerifyingLinkState(); 972 /* Connected with IP addr */ 973 private State mConnectedState = new ConnectedState(); 974 /* Roaming */ 975 private State mRoamingState = new RoamingState(); 976 /* disconnect issued, waiting for network disconnect confirmation */ 977 private State mDisconnectingState = new DisconnectingState(); 978 /* Network is not connected, supplicant assoc+auth is not complete */ 979 private State mDisconnectedState = new DisconnectedState(); 980 /* Waiting for WPS to be completed*/ 981 private State mWpsRunningState = new WpsRunningState(); 982 983 /* Soft ap is starting up */ 984 private State mSoftApStartingState = new SoftApStartingState(); 985 /* Soft ap is running */ 986 private State mSoftApStartedState = new SoftApStartedState(); 987 /* Soft ap is running and we are waiting for tether notification */ 988 private State mTetheringState = new TetheringState(); 989 /* Soft ap is running and we are tethered through connectivity service */ 990 private State mTetheredState = new TetheredState(); 991 /* Waiting for untether confirmation before stopping soft Ap */ 992 private State mUntetheringState = new UntetheringState(); 993 994 995 996 private class WifiScanListener implements WifiScanner.ScanListener { 997 @Override 998 public void onSuccess() { 999 Log.e(TAG, "WifiScanListener onSuccess"); 1000 }; 1001 @Override 1002 public void onFailure(int reason, String description) { 1003 Log.e(TAG, "WifiScanListener onFailure"); 1004 }; 1005 @Override 1006 public void onPeriodChanged(int periodInMs) { 1007 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1008 } 1009 @Override 1010 public void onResults(WifiScanner.ScanData[] results) { 1011 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1012 } 1013 @Override 1014 public void onFullResult(ScanResult fullScanResult) { 1015 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1016 } 1017 1018 WifiScanListener() {} 1019 } 1020 1021 WifiScanListener mWifiScanListener = new WifiScanListener(); 1022 1023 1024 private class TetherStateChange { 1025 ArrayList<String> available; 1026 ArrayList<String> active; 1027 1028 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1029 available = av; 1030 active = ac; 1031 } 1032 } 1033 1034 public static class SimAuthRequestData { 1035 int networkId; 1036 int protocol; 1037 String ssid; 1038 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1039 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1040 String[] data; 1041 } 1042 1043 /** 1044 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1045 * {@link WifiManager#WIFI_STATE_DISABLING}, 1046 * {@link WifiManager#WIFI_STATE_ENABLED}, 1047 * {@link WifiManager#WIFI_STATE_ENABLING}, 1048 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1049 */ 1050 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1051 1052 /** 1053 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1054 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1055 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1056 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1057 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1058 */ 1059 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1060 1061 private static final int SCAN_REQUEST = 0; 1062 private static final String ACTION_START_SCAN = 1063 "com.android.server.WifiManager.action.START_SCAN"; 1064 1065 private static final int PNO_START_REQUEST = 0; 1066 private static final String ACTION_START_PNO = 1067 "com.android.server.WifiManager.action.START_PNO"; 1068 1069 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1070 private static final int DRIVER_STOP_REQUEST = 0; 1071 private static final String ACTION_DELAYED_DRIVER_STOP = 1072 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1073 1074 /** 1075 * Keep track of whether WIFI is running. 1076 */ 1077 private boolean mIsRunning = false; 1078 1079 /** 1080 * Keep track of whether we last told the battery stats we had started. 1081 */ 1082 private boolean mReportedRunning = false; 1083 1084 /** 1085 * Most recently set source of starting WIFI. 1086 */ 1087 private final WorkSource mRunningWifiUids = new WorkSource(); 1088 1089 /** 1090 * The last reported UIDs that were responsible for starting WIFI. 1091 */ 1092 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1093 1094 private final IBatteryStats mBatteryStats; 1095 1096 private String mTcpBufferSizes = null; 1097 1098 // Used for debug and stats gathering 1099 private static int sScanAlarmIntentCount = 0; 1100 1101 final static int frameworkMinScanIntervalSaneValue = 10000; 1102 1103 boolean mPnoEnabled; 1104 boolean mLazyRoamEnabled; 1105 long mGScanStartTimeMilli; 1106 long mGScanPeriodMilli; 1107 1108 public WifiStateMachine(Context context, String wlanInterface, 1109 WifiTrafficPoller trafficPoller) { 1110 super("WifiStateMachine"); 1111 mContext = context; 1112 mSetCountryCode = Settings.Global.getString( 1113 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1114 mInterfaceName = wlanInterface; 1115 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1116 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1117 BatteryStats.SERVICE_NAME)); 1118 1119 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1120 mNwService = INetworkManagementService.Stub.asInterface(b); 1121 1122 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1123 PackageManager.FEATURE_WIFI_DIRECT); 1124 1125 mWifiNative = new WifiNative(mInterfaceName); 1126 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1127 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1128 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1129 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1130 mWifiLogger = new WifiLogger(this); 1131 1132 mWifiInfo = new WifiInfo(); 1133 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1134 getHandler()); 1135 mLinkProperties = new LinkProperties(); 1136 1137 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1138 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1139 1140 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1141 1142 mNetworkInfo.setIsAvailable(false); 1143 mLastBssid = null; 1144 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1145 mLastSignalLevel = -1; 1146 1147 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1148 public void update() { 1149 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1150 } 1151 }); 1152 try { 1153 mNwService.registerObserver(mNetlinkTracker); 1154 } catch (RemoteException e) { 1155 loge("Couldn't register netlink tracker: " + e.toString()); 1156 } 1157 1158 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1159 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1160 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1161 1162 // Make sure the interval is not configured less than 10 seconds 1163 int period = mContext.getResources().getInteger( 1164 R.integer.config_wifi_framework_scan_interval); 1165 if (period < frameworkMinScanIntervalSaneValue) { 1166 period = frameworkMinScanIntervalSaneValue; 1167 } 1168 mDefaultFrameworkScanIntervalMs = period; 1169 1170 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1171 R.integer.config_wifi_no_network_periodic_scan_interval); 1172 1173 mDriverStopDelayMs = mContext.getResources().getInteger( 1174 R.integer.config_wifi_driver_stop_delay); 1175 1176 mBackgroundScanSupported = mContext.getResources().getBoolean( 1177 R.bool.config_wifi_background_scan_support); 1178 1179 mPrimaryDeviceType = mContext.getResources().getString( 1180 R.string.config_wifi_p2p_device_type); 1181 1182 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1183 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1184 1185 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1186 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1187 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1188 } 1189 1190 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1191 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1192 "but there is no default country code!! Resetting ..."); 1193 mRevertCountryCodeOnCellularLoss = false; 1194 } else if (mRevertCountryCodeOnCellularLoss) { 1195 logd("will revert to " + mDefaultCountryCode + " on MCC loss"); 1196 } 1197 1198 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1199 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1200 1201 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1202 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1203 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1204 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1205 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1206 // TODO - needs to be a bit more dynamic 1207 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1208 1209 mContext.registerReceiver( 1210 new BroadcastReceiver() { 1211 @Override 1212 public void onReceive(Context context, Intent intent) { 1213 ArrayList<String> available = intent.getStringArrayListExtra( 1214 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1215 ArrayList<String> active = intent.getStringArrayListExtra( 1216 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1217 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1218 } 1219 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1220 1221 mContext.registerReceiver( 1222 new BroadcastReceiver() { 1223 @Override 1224 public void onReceive(Context context, Intent intent) { 1225 sScanAlarmIntentCount++; // Used for debug only 1226 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1227 if (VDBG) 1228 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1229 } 1230 }, 1231 new IntentFilter(ACTION_START_SCAN)); 1232 1233 mContext.registerReceiver( 1234 new BroadcastReceiver() { 1235 @Override 1236 public void onReceive(Context context, Intent intent) { 1237 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1238 mRestartAutoJoinOffloadCounter, "pno alarm"); 1239 if (DBG) 1240 logd("PNO START ALARM sent"); 1241 } 1242 }, 1243 new IntentFilter(ACTION_START_PNO)); 1244 1245 1246 IntentFilter filter = new IntentFilter(); 1247 filter.addAction(Intent.ACTION_SCREEN_ON); 1248 filter.addAction(Intent.ACTION_SCREEN_OFF); 1249 mContext.registerReceiver( 1250 new BroadcastReceiver() { 1251 @Override 1252 public void onReceive(Context context, Intent intent) { 1253 String action = intent.getAction(); 1254 1255 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1256 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1257 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1258 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1259 } 1260 } 1261 }, filter); 1262 1263 mContext.registerReceiver( 1264 new BroadcastReceiver() { 1265 @Override 1266 public void onReceive(Context context, Intent intent) { 1267 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1268 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1269 } 1270 }, 1271 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1272 1273 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1274 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1275 new ContentObserver(getHandler()) { 1276 @Override 1277 public void onChange(boolean selfChange) { 1278 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1279 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1280 } 1281 }); 1282 1283 mContext.registerReceiver( 1284 new BroadcastReceiver() { 1285 @Override 1286 public void onReceive(Context context, Intent intent) { 1287 sendMessage(CMD_BOOT_COMPLETED); 1288 } 1289 }, 1290 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1291 1292 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1293 1294 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1295 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1296 1297 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1298 mSuspendWakeLock.setReferenceCounted(false); 1299 1300 mTcpBufferSizes = mContext.getResources().getString( 1301 com.android.internal.R.string.config_wifi_tcp_buffers); 1302 1303 addState(mDefaultState); 1304 addState(mInitialState, mDefaultState); 1305 addState(mSupplicantStartingState, mDefaultState); 1306 addState(mSupplicantStartedState, mDefaultState); 1307 addState(mDriverStartingState, mSupplicantStartedState); 1308 addState(mDriverStartedState, mSupplicantStartedState); 1309 addState(mScanModeState, mDriverStartedState); 1310 addState(mConnectModeState, mDriverStartedState); 1311 addState(mL2ConnectedState, mConnectModeState); 1312 addState(mObtainingIpState, mL2ConnectedState); 1313 addState(mVerifyingLinkState, mL2ConnectedState); 1314 addState(mConnectedState, mL2ConnectedState); 1315 addState(mRoamingState, mL2ConnectedState); 1316 addState(mDisconnectingState, mConnectModeState); 1317 addState(mDisconnectedState, mConnectModeState); 1318 addState(mWpsRunningState, mConnectModeState); 1319 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1320 addState(mDriverStoppingState, mSupplicantStartedState); 1321 addState(mDriverStoppedState, mSupplicantStartedState); 1322 addState(mSupplicantStoppingState, mDefaultState); 1323 addState(mSoftApStartingState, mDefaultState); 1324 addState(mSoftApStartedState, mDefaultState); 1325 addState(mTetheringState, mSoftApStartedState); 1326 addState(mTetheredState, mSoftApStartedState); 1327 addState(mUntetheringState, mSoftApStartedState); 1328 1329 setInitialState(mInitialState); 1330 1331 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1332 setLogOnlyTransitions(false); 1333 if (VDBG) setDbg(true); 1334 1335 //start the state machine 1336 start(); 1337 1338 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1339 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1340 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1341 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1342 } 1343 1344 1345 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1346 Intent intent = new Intent(action, null); 1347 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1348 //intent.setPackage(this.getClass().getPackage().getName()); 1349 intent.setPackage("android"); 1350 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1351 } 1352 1353 private int mVerboseLoggingLevel = 0; 1354 1355 int getVerboseLoggingLevel() { 1356 return mVerboseLoggingLevel; 1357 } 1358 1359 void enableVerboseLogging(int verbose) { 1360 mVerboseLoggingLevel = verbose; 1361 if (verbose > 0) { 1362 DBG = true; 1363 VDBG = true; 1364 PDBG = true; 1365 mLogMessages = true; 1366 mWifiNative.setSupplicantLogLevel("DEBUG"); 1367 } else { 1368 DBG = false; 1369 VDBG = false; 1370 PDBG = false; 1371 mLogMessages = false; 1372 mWifiNative.setSupplicantLogLevel("INFO"); 1373 } 1374 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1375 mWifiAutoJoinController.enableVerboseLogging(verbose); 1376 mWifiMonitor.enableVerboseLogging(verbose); 1377 mWifiNative.enableVerboseLogging(verbose); 1378 mWifiConfigStore.enableVerboseLogging(verbose); 1379 mSupplicantStateTracker.enableVerboseLogging(verbose); 1380 } 1381 1382 public void setHalBasedAutojoinOffload(int enabled) { 1383 // Shoult be used for debug only, triggered form developper settings 1384 // enabling HAl based PNO dynamically is not safe and not a normal operation 1385 mHalBasedPnoEnableInDevSettings = enabled > 0; 1386 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1387 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1388 sendMessage(CMD_DISCONNECT); 1389 } 1390 1391 int getHalBasedAutojoinOffload() { 1392 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1393 } 1394 1395 boolean useHalBasedAutoJoinOffload() { 1396 // all three settings need to be true: 1397 // - developper settings switch 1398 // - driver support 1399 // - config option 1400 return mHalBasedPnoEnableInDevSettings 1401 && mHalBasedPnoDriverSupported 1402 && mWifiConfigStore.enableHalBasedPno.get(); 1403 } 1404 1405 boolean allowFullBandScanAndAssociated() { 1406 1407 if (!getEnableAutoJoinWhenAssociated()) { 1408 if (DBG) { 1409 Log.e(TAG, "allowFullBandScanAndAssociated: " 1410 + " enableAutoJoinWhenAssociated : disallow"); 1411 } 1412 return false; 1413 } 1414 1415 if (mWifiInfo.txSuccessRate > 1416 mWifiConfigStore.maxTxPacketForFullScans 1417 || mWifiInfo.rxSuccessRate > 1418 mWifiConfigStore.maxRxPacketForFullScans) { 1419 if (DBG) { 1420 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1421 + mWifiInfo.txSuccessRate + " rx " 1422 + mWifiInfo.rxSuccessRate 1423 + " allow scan with traffic " + getAllowScansWithTraffic()); 1424 } 1425 // Too much traffic at the interface, hence no full band scan 1426 if (getAllowScansWithTraffic() == 0) { 1427 return false; 1428 } 1429 } 1430 1431 if (getCurrentState() != mConnectedState) { 1432 if (DBG) { 1433 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1434 } 1435 return false; 1436 } 1437 1438 return true; 1439 } 1440 1441 long mLastScanPermissionUpdate = 0; 1442 boolean mConnectedModeGScanOffloadStarted = false; 1443 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1444 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1445 // we want to throttle the GScan Stop->Start transition 1446 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1447 void updateAssociatedScanPermission() { 1448 1449 if (useHalBasedAutoJoinOffload()) { 1450 boolean allowed = allowFullBandScanAndAssociated(); 1451 1452 long now = System.currentTimeMillis(); 1453 if (mConnectedModeGScanOffloadStarted && !allowed) { 1454 if (DBG) { 1455 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1456 } 1457 stopPnoOffload(); 1458 stopGScan(" useHalBasedAutoJoinOffload"); 1459 } 1460 if (!mConnectedModeGScanOffloadStarted && allowed) { 1461 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1462 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1463 // to look for 5GHz BSSIDs and better networks 1464 if (DBG) { 1465 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1466 } 1467 startGScanConnectedModeOffload("updatePermission " 1468 + (now - mLastScanPermissionUpdate) + "ms"); 1469 mLastScanPermissionUpdate = now; 1470 } 1471 } 1472 } 1473 } 1474 1475 private int mAggressiveHandover = 0; 1476 1477 int getAggressiveHandover() { 1478 return mAggressiveHandover; 1479 } 1480 1481 void enableAggressiveHandover(int enabled) { 1482 mAggressiveHandover = enabled; 1483 } 1484 1485 public void clearANQPCache() { 1486 mWifiConfigStore.trimANQPCache(true); 1487 } 1488 1489 public void setAllowScansWithTraffic(int enabled) { 1490 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1491 } 1492 1493 public int getAllowScansWithTraffic() { 1494 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1495 } 1496 1497 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1498 boolean old_state = getEnableAutoJoinWhenAssociated(); 1499 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1500 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1501 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1502 null); 1503 } 1504 return true; 1505 } 1506 1507 public boolean getEnableAutoJoinWhenAssociated() { 1508 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1509 } 1510 /* 1511 * 1512 * Framework scan control 1513 */ 1514 1515 private boolean mAlarmEnabled = false; 1516 1517 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1518 1519 private void setScanAlarm(boolean enabled) { 1520 if (PDBG) { 1521 String state; 1522 if (enabled) state = "enabled"; else state = "disabled"; 1523 logd("setScanAlarm " + state 1524 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1525 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1526 } 1527 if (mBackgroundScanSupported == false) { 1528 // Scan alarm is only used for background scans if they are not 1529 // offloaded to the wifi chipset, hence enable the scan alarm 1530 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1531 enabled = true; 1532 } 1533 1534 if (enabled == mAlarmEnabled) return; 1535 if (enabled) { 1536 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1537 /* going to wake up the host processor to look for access points */ 1538 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1539 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1540 mScanIntent); 1541 mAlarmEnabled = true; 1542 } else { 1543 mAlarmManager.cancel(mScanIntent); 1544 mAlarmEnabled = false; 1545 } 1546 } 1547 1548 private void cancelDelayedScan() { 1549 mDelayedScanCounter.incrementAndGet(); 1550 } 1551 1552 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1553 ScanSettings settings, WorkSource workSource) { 1554 1555 if (counter != mDelayedScanCounter.get()) { 1556 return false; 1557 } 1558 if (restart) 1559 startDelayedScan(milli, settings, workSource); 1560 return true; 1561 } 1562 1563 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1564 if (milli <= 0) return; 1565 /** 1566 * The cases where the scan alarm should be run are : 1567 * - DisconnectedState && screenOn => used delayed timer 1568 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1569 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1570 * - ConnectedState && screenOn => used delayed timer 1571 */ 1572 1573 mDelayedScanCounter.incrementAndGet(); 1574 if (mScreenOn && 1575 (getCurrentState() == mDisconnectedState 1576 || getCurrentState() == mConnectedState)) { 1577 Bundle bundle = new Bundle(); 1578 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1579 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1580 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1581 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1582 mDelayedScanCounter.get(), bundle, milli); 1583 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1584 } else if (mBackgroundScanSupported == false 1585 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1586 setScanAlarm(true); 1587 if (DBG) logd("startDelayedScan start scan alarm -> " 1588 + mDelayedScanCounter + " milli " + milli); 1589 } else { 1590 if (DBG) logd("startDelayedScan unhandled -> " 1591 + mDelayedScanCounter + " milli " + milli); 1592 } 1593 } 1594 1595 private boolean setRandomMacOui() { 1596 String oui = mContext.getResources().getString( 1597 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1598 String[] ouiParts = oui.split("-"); 1599 byte[] ouiBytes = new byte[3]; 1600 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1601 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1602 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1603 1604 logd("Setting OUI to " + oui); 1605 return mWifiNative.setScanningMacOui(ouiBytes); 1606 } 1607 1608 /** 1609 * ****************************************************** 1610 * Methods exposed for public use 1611 * ****************************************************** 1612 */ 1613 1614 public Messenger getMessenger() { 1615 return new Messenger(getHandler()); 1616 } 1617 1618 public WifiMonitor getWifiMonitor() { 1619 return mWifiMonitor; 1620 } 1621 1622 /** 1623 * TODO: doc 1624 */ 1625 public boolean syncPingSupplicant(AsyncChannel channel) { 1626 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1627 boolean result = (resultMsg.arg1 != FAILURE); 1628 resultMsg.recycle(); 1629 return result; 1630 } 1631 1632 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1633 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1634 List<WifiChannel> list = null; 1635 if (resultMsg.obj != null) { 1636 list = new ArrayList<WifiChannel>(); 1637 String freqs = (String) resultMsg.obj; 1638 String[] lines = freqs.split("\n"); 1639 for (String line : lines) 1640 if (line.contains("MHz")) { 1641 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1642 WifiChannel c = new WifiChannel(); 1643 String[] prop = line.split(" "); 1644 if (prop.length < 5) continue; 1645 try { 1646 c.channelNum = Integer.parseInt(prop[1]); 1647 c.freqMHz = Integer.parseInt(prop[3]); 1648 } catch (NumberFormatException e) { 1649 } 1650 c.isDFS = line.contains("(DFS)"); 1651 list.add(c); 1652 } else if (line.contains("Mode[B] Channels:")) { 1653 // B channels are the same as G channels, skipped 1654 break; 1655 } 1656 } 1657 resultMsg.recycle(); 1658 return (list != null && list.size() > 0) ? list : null; 1659 } 1660 1661 /** 1662 * When settings allowing making use of untrusted networks change, trigger a scan 1663 * so as to kick of autojoin. 1664 */ 1665 public void startScanForUntrustedSettingChange() { 1666 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1667 } 1668 1669 /** 1670 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1671 * given to callingUid. 1672 * 1673 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1674 * workSource is specified. 1675 * @param workSource If not null, blame is given to workSource. 1676 * @param settings Scan settings, see {@link ScanSettings}. 1677 */ 1678 public void startScan(int callingUid, int scanCounter, 1679 ScanSettings settings, WorkSource workSource) { 1680 Bundle bundle = new Bundle(); 1681 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1682 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1683 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1684 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1685 } 1686 1687 // called from BroadcastListener 1688 1689 /** 1690 * Start reading new scan data 1691 * Data comes in as: 1692 * "scancount=5\n" 1693 * "nextcount=5\n" 1694 * "apcount=3\n" 1695 * "trunc\n" (optional) 1696 * "bssid=...\n" 1697 * "ssid=...\n" 1698 * "freq=...\n" (in Mhz) 1699 * "level=...\n" 1700 * "dist=...\n" (in cm) 1701 * "distsd=...\n" (standard deviation, in cm) 1702 * "====" 1703 * "bssid=...\n" 1704 * etc 1705 * "====" 1706 * "bssid=...\n" 1707 * etc 1708 * "%%%%" 1709 * "apcount=2\n" 1710 * "bssid=...\n" 1711 * etc 1712 * "%%%% 1713 * etc 1714 * "----" 1715 */ 1716 private final static boolean DEBUG_PARSE = false; 1717 1718 private long mDisconnectedTimeStamp = 0; 1719 1720 public long getDisconnectedTimeMilli() { 1721 if (getCurrentState() == mDisconnectedState 1722 && mDisconnectedTimeStamp != 0) { 1723 long now_ms = System.currentTimeMillis(); 1724 return now_ms - mDisconnectedTimeStamp; 1725 } 1726 return 0; 1727 } 1728 1729 // Keeping track of scan requests 1730 private long lastStartScanTimeStamp = 0; 1731 private long lastScanDuration = 0; 1732 // Last connect attempt is used to prevent scan requests: 1733 // - for a period of 10 seconds after attempting to connect 1734 private long lastConnectAttemptTimestamp = 0; 1735 private String lastScanFreqs = null; 1736 1737 // For debugging, keep track of last message status handling 1738 // TODO, find an equivalent mechanism as part of parent class 1739 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1740 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1741 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1742 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1743 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1744 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1745 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1746 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1747 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1748 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1749 1750 private int messageHandlingStatus = 0; 1751 1752 //TODO: this is used only to track connection attempts, however the link state and packet per 1753 //TODO: second logic should be folded into that 1754 private boolean checkOrDeferScanAllowed(Message msg) { 1755 long now = System.currentTimeMillis(); 1756 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1757 Message dmsg = Message.obtain(msg); 1758 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1759 return false; 1760 } 1761 return true; 1762 } 1763 1764 private int mOnTime = 0; 1765 private int mTxTime = 0; 1766 private int mRxTime = 0; 1767 private int mOnTimeStartScan = 0; 1768 private int mTxTimeStartScan = 0; 1769 private int mRxTimeStartScan = 0; 1770 private int mOnTimeScan = 0; 1771 private int mTxTimeScan = 0; 1772 private int mRxTimeScan = 0; 1773 private int mOnTimeThisScan = 0; 1774 private int mTxTimeThisScan = 0; 1775 private int mRxTimeThisScan = 0; 1776 1777 private int mOnTimeScreenStateChange = 0; 1778 private int mOnTimeAtLastReport = 0; 1779 private long lastOntimeReportTimeStamp = 0; 1780 private long lastScreenStateChangeTimeStamp = 0; 1781 private int mOnTimeLastReport = 0; 1782 private int mTxTimeLastReport = 0; 1783 private int mRxTimeLastReport = 0; 1784 1785 private long lastLinkLayerStatsUpdate = 0; 1786 1787 String reportOnTime() { 1788 long now = System.currentTimeMillis(); 1789 StringBuilder sb = new StringBuilder(); 1790 // Report stats since last report 1791 int on = mOnTime - mOnTimeLastReport; 1792 mOnTimeLastReport = mOnTime; 1793 int tx = mTxTime - mTxTimeLastReport; 1794 mTxTimeLastReport = mTxTime; 1795 int rx = mRxTime - mRxTimeLastReport; 1796 mRxTimeLastReport = mRxTime; 1797 int period = (int) (now - lastOntimeReportTimeStamp); 1798 lastOntimeReportTimeStamp = now; 1799 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1800 // Report stats since Screen State Changed 1801 on = mOnTime - mOnTimeScreenStateChange; 1802 period = (int) (now - lastScreenStateChangeTimeStamp); 1803 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1804 return sb.toString(); 1805 } 1806 1807 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1808 WifiLinkLayerStats stats = null; 1809 if (mWifiLinkLayerStatsSupported > 0) { 1810 String name = "wlan0"; 1811 stats = mWifiNative.getWifiLinkLayerStats(name); 1812 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1813 mWifiLinkLayerStatsSupported -= 1; 1814 } else if (stats != null) { 1815 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1816 mOnTime = stats.on_time; 1817 mTxTime = stats.tx_time; 1818 mRxTime = stats.rx_time; 1819 mRunningBeaconCount = stats.beacon_rx; 1820 } 1821 } 1822 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1823 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1824 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1825 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1826 } else { 1827 mWifiInfo.updatePacketRates(stats); 1828 } 1829 if (useHalBasedAutoJoinOffload()) { 1830 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1831 } 1832 return stats; 1833 } 1834 1835 void startRadioScanStats() { 1836 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1837 if (stats != null) { 1838 mOnTimeStartScan = stats.on_time; 1839 mTxTimeStartScan = stats.tx_time; 1840 mRxTimeStartScan = stats.rx_time; 1841 mOnTime = stats.on_time; 1842 mTxTime = stats.tx_time; 1843 mRxTime = stats.rx_time; 1844 } 1845 } 1846 1847 void closeRadioScanStats() { 1848 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1849 if (stats != null) { 1850 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1851 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1852 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1853 mOnTimeScan += mOnTimeThisScan; 1854 mTxTimeScan += mTxTimeThisScan; 1855 mRxTimeScan += mRxTimeThisScan; 1856 } 1857 } 1858 1859 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1860 return mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1861 } 1862 1863 int stopWifiIPPacketOffload(int slot) { 1864 return mWifiNative.stopSendingOffloadedPacket(slot); 1865 } 1866 1867 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1868 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1869 } 1870 1871 int stopRssiMonitoringOffload() { 1872 return mWifiNative.stopRssiMonitoring(); 1873 } 1874 1875 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1876 private void noteScanStart(int callingUid, WorkSource workSource) { 1877 long now = System.currentTimeMillis(); 1878 lastStartScanTimeStamp = now; 1879 lastScanDuration = 0; 1880 if (DBG) { 1881 String ts = String.format("[%,d ms]", now); 1882 if (workSource != null) { 1883 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1884 + " uid " + Integer.toString(callingUid)); 1885 } else { 1886 if (DBG) logd(ts + " noteScanstart no scan source" 1887 + " uid " + Integer.toString(callingUid)); 1888 } 1889 } 1890 startRadioScanStats(); 1891 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1892 && callingUid != SCAN_ALARM_SOURCE) 1893 || workSource != null)) { 1894 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1895 1896 WorkSource batteryWorkSource = mScanWorkSource; 1897 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1898 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1899 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1900 } 1901 1902 try { 1903 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1904 } catch (RemoteException e) { 1905 log(e.toString()); 1906 } 1907 } 1908 } 1909 1910 private void noteScanEnd() { 1911 long now = System.currentTimeMillis(); 1912 if (lastStartScanTimeStamp != 0) { 1913 lastScanDuration = now - lastStartScanTimeStamp; 1914 } 1915 lastStartScanTimeStamp = 0; 1916 if (DBG) { 1917 String ts = String.format("[%,d ms]", now); 1918 if (mScanWorkSource != null) 1919 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 1920 + " onTime=" + mOnTimeThisScan); 1921 else 1922 logd(ts + " noteScanEnd no scan source" 1923 + " onTime=" + mOnTimeThisScan); 1924 } 1925 if (mScanWorkSource != null) { 1926 try { 1927 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1928 } catch (RemoteException e) { 1929 log(e.toString()); 1930 } finally { 1931 mScanWorkSource = null; 1932 } 1933 } 1934 } 1935 1936 private void handleScanRequest(int type, Message message) { 1937 ScanSettings settings = null; 1938 WorkSource workSource = null; 1939 1940 // unbundle parameters 1941 Bundle bundle = (Bundle) message.obj; 1942 1943 if (bundle != null) { 1944 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1945 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1946 } 1947 1948 // parse scan settings 1949 String freqs = null; 1950 if (settings != null && settings.channelSet != null) { 1951 StringBuilder sb = new StringBuilder(); 1952 boolean first = true; 1953 for (WifiChannel channel : settings.channelSet) { 1954 if (!first) sb.append(','); 1955 else first = false; 1956 sb.append(channel.freqMHz); 1957 } 1958 freqs = sb.toString(); 1959 } 1960 1961 // call wifi native to start the scan 1962 if (startScanNative(type, freqs)) { 1963 // only count battery consumption if scan request is accepted 1964 noteScanStart(message.arg1, workSource); 1965 // a full scan covers everything, clearing scan request buffer 1966 if (freqs == null) 1967 mBufferedScanMsg.clear(); 1968 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1969 if (workSource != null) { 1970 // External worksource was passed along the scan request, 1971 // hence always send a broadcast 1972 mSendScanResultsBroadcast = true; 1973 } 1974 return; 1975 } 1976 1977 // if reach here, scan request is rejected 1978 1979 if (!mIsScanOngoing) { 1980 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1981 1982 // discard this request and pop up the next one 1983 if (mBufferedScanMsg.size() > 0) { 1984 sendMessage(mBufferedScanMsg.remove()); 1985 } 1986 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1987 } else if (!mIsFullScanOngoing) { 1988 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1989 // buffer the scan request to make sure specified channels will be scanned eventually 1990 if (freqs == null) 1991 mBufferedScanMsg.clear(); 1992 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1993 Message msg = obtainMessage(CMD_START_SCAN, 1994 message.arg1, message.arg2, bundle); 1995 mBufferedScanMsg.add(msg); 1996 } else { 1997 // if too many requests in buffer, combine them into a single full scan 1998 bundle = new Bundle(); 1999 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2000 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2001 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2002 mBufferedScanMsg.clear(); 2003 mBufferedScanMsg.add(msg); 2004 } 2005 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2006 } else { 2007 // mIsScanOngoing and mIsFullScanOngoing 2008 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2009 } 2010 } 2011 2012 2013 /** 2014 * return true iff scan request is accepted 2015 */ 2016 private boolean startScanNative(int type, String freqs) { 2017 if (mWifiNative.scan(type, freqs)) { 2018 mIsScanOngoing = true; 2019 mIsFullScanOngoing = (freqs == null); 2020 lastScanFreqs = freqs; 2021 return true; 2022 } 2023 return false; 2024 } 2025 2026 /** 2027 * TODO: doc 2028 */ 2029 public void setSupplicantRunning(boolean enable) { 2030 if (enable) { 2031 sendMessage(CMD_START_SUPPLICANT); 2032 } else { 2033 sendMessage(CMD_STOP_SUPPLICANT); 2034 } 2035 } 2036 2037 /** 2038 * TODO: doc 2039 */ 2040 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2041 if (enable) { 2042 sendMessage(CMD_START_AP, wifiConfig); 2043 } else { 2044 sendMessage(CMD_STOP_AP); 2045 } 2046 } 2047 2048 public void setWifiApConfiguration(WifiConfiguration config) { 2049 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2050 } 2051 2052 public WifiConfiguration syncGetWifiApConfiguration() { 2053 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2054 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2055 resultMsg.recycle(); 2056 return ret; 2057 } 2058 2059 /** 2060 * TODO: doc 2061 */ 2062 public int syncGetWifiState() { 2063 return mWifiState.get(); 2064 } 2065 2066 /** 2067 * TODO: doc 2068 */ 2069 public String syncGetWifiStateByName() { 2070 switch (mWifiState.get()) { 2071 case WIFI_STATE_DISABLING: 2072 return "disabling"; 2073 case WIFI_STATE_DISABLED: 2074 return "disabled"; 2075 case WIFI_STATE_ENABLING: 2076 return "enabling"; 2077 case WIFI_STATE_ENABLED: 2078 return "enabled"; 2079 case WIFI_STATE_UNKNOWN: 2080 return "unknown state"; 2081 default: 2082 return "[invalid state]"; 2083 } 2084 } 2085 2086 /** 2087 * TODO: doc 2088 */ 2089 public int syncGetWifiApState() { 2090 return mWifiApState.get(); 2091 } 2092 2093 /** 2094 * TODO: doc 2095 */ 2096 public String syncGetWifiApStateByName() { 2097 switch (mWifiApState.get()) { 2098 case WIFI_AP_STATE_DISABLING: 2099 return "disabling"; 2100 case WIFI_AP_STATE_DISABLED: 2101 return "disabled"; 2102 case WIFI_AP_STATE_ENABLING: 2103 return "enabling"; 2104 case WIFI_AP_STATE_ENABLED: 2105 return "enabled"; 2106 case WIFI_AP_STATE_FAILED: 2107 return "failed"; 2108 default: 2109 return "[invalid state]"; 2110 } 2111 } 2112 2113 /** 2114 * Get status information for the current connection, if any. 2115 * 2116 * @return a {@link WifiInfo} object containing information about the current connection 2117 */ 2118 public WifiInfo syncRequestConnectionInfo() { 2119 return getWiFiInfoForUid(Binder.getCallingUid()); 2120 } 2121 2122 public DhcpResults syncGetDhcpResults() { 2123 synchronized (mDhcpResultsLock) { 2124 return new DhcpResults(mDhcpResults); 2125 } 2126 } 2127 2128 /** 2129 * TODO: doc 2130 */ 2131 public void setDriverStart(boolean enable) { 2132 if (enable) { 2133 sendMessage(CMD_START_DRIVER); 2134 } else { 2135 sendMessage(CMD_STOP_DRIVER); 2136 } 2137 } 2138 2139 /** 2140 * TODO: doc 2141 */ 2142 public void setOperationalMode(int mode) { 2143 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2144 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2145 } 2146 2147 /** 2148 * TODO: doc 2149 */ 2150 public List<ScanResult> syncGetScanResultsList() { 2151 synchronized (mScanResultCache) { 2152 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2153 for (ScanDetail result : mScanResults) { 2154 scanList.add(new ScanResult(result.getScanResult())); 2155 } 2156 return scanList; 2157 } 2158 } 2159 2160 public void disableEphemeralNetwork(String SSID) { 2161 if (SSID != null) { 2162 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2163 } 2164 } 2165 2166 /** 2167 * Get unsynchronized pointer to scan result list 2168 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2169 */ 2170 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2171 return mScanResults; 2172 } 2173 2174 /** 2175 * Disconnect from Access Point 2176 */ 2177 public void disconnectCommand() { 2178 sendMessage(CMD_DISCONNECT); 2179 } 2180 2181 public void disconnectCommand(int uid, int reason) { 2182 sendMessage(CMD_DISCONNECT, uid, reason); 2183 } 2184 2185 /** 2186 * Initiate a reconnection to AP 2187 */ 2188 public void reconnectCommand() { 2189 sendMessage(CMD_RECONNECT); 2190 } 2191 2192 /** 2193 * Initiate a re-association to AP 2194 */ 2195 public void reassociateCommand() { 2196 sendMessage(CMD_REASSOCIATE); 2197 } 2198 2199 /** 2200 * Reload networks and then reconnect; helps load correct data for TLS networks 2201 */ 2202 2203 public void reloadTlsNetworksAndReconnect() { 2204 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2205 } 2206 2207 /** 2208 * Add a network synchronously 2209 * 2210 * @return network id of the new network 2211 */ 2212 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2213 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2214 int result = resultMsg.arg1; 2215 resultMsg.recycle(); 2216 return result; 2217 } 2218 2219 /** 2220 * Get configured networks synchronously 2221 * 2222 * @param channel 2223 * @return 2224 */ 2225 2226 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2227 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2228 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2229 resultMsg.recycle(); 2230 return result; 2231 } 2232 2233 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2234 Message resultMsg = channel.sendMessageSynchronously( 2235 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2236 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2237 resultMsg.recycle(); 2238 return result; 2239 } 2240 2241 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2242 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2243 return (WifiConfiguration) resultMsg.obj; 2244 } 2245 2246 /** 2247 * Get connection statistics synchronously 2248 * 2249 * @param channel 2250 * @return 2251 */ 2252 2253 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2254 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2255 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2256 resultMsg.recycle(); 2257 return result; 2258 } 2259 2260 /** 2261 * Get adaptors synchronously 2262 */ 2263 2264 public int syncGetSupportedFeatures(AsyncChannel channel) { 2265 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2266 int supportedFeatureSet = resultMsg.arg1; 2267 resultMsg.recycle(); 2268 return supportedFeatureSet; 2269 } 2270 2271 /** 2272 * Get link layers stats for adapter synchronously 2273 */ 2274 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2275 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2276 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2277 resultMsg.recycle(); 2278 return result; 2279 } 2280 2281 /** 2282 * Delete a network 2283 * 2284 * @param networkId id of the network to be removed 2285 */ 2286 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2287 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2288 boolean result = (resultMsg.arg1 != FAILURE); 2289 resultMsg.recycle(); 2290 return result; 2291 } 2292 2293 /** 2294 * Enable a network 2295 * 2296 * @param netId network id of the network 2297 * @param disableOthers true, if all other networks have to be disabled 2298 * @return {@code true} if the operation succeeds, {@code false} otherwise 2299 */ 2300 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2301 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2302 disableOthers ? 1 : 0); 2303 boolean result = (resultMsg.arg1 != FAILURE); 2304 resultMsg.recycle(); 2305 return result; 2306 } 2307 2308 /** 2309 * Disable a network 2310 * 2311 * @param netId network id of the network 2312 * @return {@code true} if the operation succeeds, {@code false} otherwise 2313 */ 2314 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2315 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2316 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2317 resultMsg.recycle(); 2318 return result; 2319 } 2320 2321 /** 2322 * Retrieves a WPS-NFC configuration token for the specified network 2323 * 2324 * @return a hex string representation of the WPS-NFC configuration token 2325 */ 2326 public String syncGetWpsNfcConfigurationToken(int netId) { 2327 return mWifiNative.getNfcWpsConfigurationToken(netId); 2328 } 2329 2330 void enableBackgroundScan(boolean enable) { 2331 if (enable) { 2332 mWifiConfigStore.enableAllNetworks(); 2333 } 2334 boolean ret = mWifiNative.enableBackgroundScan(enable); 2335 if (ret) { 2336 mLegacyPnoEnabled = enable; 2337 } else { 2338 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2339 } 2340 } 2341 2342 /** 2343 * Blacklist a BSSID. This will avoid the AP if there are 2344 * alternate APs to connect 2345 * 2346 * @param bssid BSSID of the network 2347 */ 2348 public void addToBlacklist(String bssid) { 2349 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2350 } 2351 2352 /** 2353 * Clear the blacklist list 2354 */ 2355 public void clearBlacklist() { 2356 sendMessage(CMD_CLEAR_BLACKLIST); 2357 } 2358 2359 public void enableRssiPolling(boolean enabled) { 2360 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2361 } 2362 2363 public void enableAllNetworks() { 2364 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2365 } 2366 2367 /** 2368 * Start filtering Multicast v4 packets 2369 */ 2370 public void startFilteringMulticastV4Packets() { 2371 mFilteringMulticastV4Packets.set(true); 2372 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2373 } 2374 2375 /** 2376 * Stop filtering Multicast v4 packets 2377 */ 2378 public void stopFilteringMulticastV4Packets() { 2379 mFilteringMulticastV4Packets.set(false); 2380 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2381 } 2382 2383 /** 2384 * Start filtering Multicast v4 packets 2385 */ 2386 public void startFilteringMulticastV6Packets() { 2387 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2388 } 2389 2390 /** 2391 * Stop filtering Multicast v4 packets 2392 */ 2393 public void stopFilteringMulticastV6Packets() { 2394 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2395 } 2396 2397 /** 2398 * Set high performance mode of operation. 2399 * Enabling would set active power mode and disable suspend optimizations; 2400 * disabling would set auto power mode and enable suspend optimizations 2401 * 2402 * @param enable true if enable, false otherwise 2403 */ 2404 public void setHighPerfModeEnabled(boolean enable) { 2405 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2406 } 2407 2408 public int stopRssiMonitoring(AsyncChannel channel) { 2409 Message resultMsg = channel.sendMessageSynchronously(CMD_STOP_RSSI_MONITORING_OFFLOAD, 2410 mRssiRanges); 2411 int ret = (int)resultMsg.obj; 2412 resultMsg.recycle(); 2413 return ret; 2414 } 2415 2416 /** 2417 * Set the country code 2418 * 2419 * @param countryCode following ISO 3166 format 2420 * @param persist {@code true} if the setting should be remembered. 2421 */ 2422 public synchronized void setCountryCode(String countryCode, boolean persist) { 2423 // If it's a good country code, apply after the current 2424 // wifi connection is terminated; ignore resetting of code 2425 // for now (it is unclear what the chipset should do when 2426 // country code is reset) 2427 2428 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2429 // else only when the new country code is different from the current one to set 2430 int countryCodeSequence = mCountryCodeSequence.get(); 2431 if (countryCodeSequence == 0 || TextUtils.equals(countryCode, mSetCountryCode) == false) { 2432 2433 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2434 mSetCountryCode = countryCode; 2435 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2436 countryCode); 2437 } 2438 } 2439 2440 /** 2441 * Get Network object of current wifi network 2442 * @return Network object of current wifi network 2443 */ 2444 public Network getCurrentNetwork() { 2445 if (mNetworkAgent != null) { 2446 return new Network(mNetworkAgent.netId); 2447 } else { 2448 return null; 2449 } 2450 } 2451 2452 /** 2453 * Get the country code 2454 * 2455 * @param countryCode following ISO 3166 format 2456 */ 2457 public String getCountryCode() { 2458 return mSetCountryCode; 2459 } 2460 2461 2462 /** 2463 * Set the operational frequency band 2464 * 2465 * @param band 2466 * @param persist {@code true} if the setting should be remembered. 2467 */ 2468 public void setFrequencyBand(int band, boolean persist) { 2469 if (persist) { 2470 Settings.Global.putInt(mContext.getContentResolver(), 2471 Settings.Global.WIFI_FREQUENCY_BAND, 2472 band); 2473 } 2474 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2475 } 2476 2477 /** 2478 * Enable TDLS for a specific MAC address 2479 */ 2480 public void enableTdls(String remoteMacAddress, boolean enable) { 2481 int enabler = enable ? 1 : 0; 2482 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2483 } 2484 2485 /** 2486 * Returns the operational frequency band 2487 */ 2488 public int getFrequencyBand() { 2489 return mFrequencyBand.get(); 2490 } 2491 2492 /** 2493 * Returns the wifi configuration file 2494 */ 2495 public String getConfigFile() { 2496 return mWifiConfigStore.getConfigFile(); 2497 } 2498 2499 /** 2500 * Send a message indicating bluetooth adapter connection state changed 2501 */ 2502 public void sendBluetoothAdapterStateChange(int state) { 2503 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2504 } 2505 2506 /** 2507 * Send a message indicating a package has been uninstalled. 2508 */ 2509 public void removeAppConfigs(String packageName, int uid) { 2510 // Build partial AppInfo manually - package may not exist in database any more 2511 ApplicationInfo ai = new ApplicationInfo(); 2512 ai.packageName = packageName; 2513 ai.uid = uid; 2514 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2515 } 2516 2517 /** 2518 * Send a message indicating a user has been removed. 2519 */ 2520 public void removeUserConfigs(int userId) { 2521 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2522 } 2523 2524 /** 2525 * Save configuration on supplicant 2526 * 2527 * @return {@code true} if the operation succeeds, {@code false} otherwise 2528 * <p/> 2529 * TODO: deprecate this 2530 */ 2531 public boolean syncSaveConfig(AsyncChannel channel) { 2532 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2533 boolean result = (resultMsg.arg1 != FAILURE); 2534 resultMsg.recycle(); 2535 return result; 2536 } 2537 2538 public void updateBatteryWorkSource(WorkSource newSource) { 2539 synchronized (mRunningWifiUids) { 2540 try { 2541 if (newSource != null) { 2542 mRunningWifiUids.set(newSource); 2543 } 2544 if (mIsRunning) { 2545 if (mReportedRunning) { 2546 // If the work source has changed since last time, need 2547 // to remove old work from battery stats. 2548 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2549 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2550 mRunningWifiUids); 2551 mLastRunningWifiUids.set(mRunningWifiUids); 2552 } 2553 } else { 2554 // Now being started, report it. 2555 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2556 mLastRunningWifiUids.set(mRunningWifiUids); 2557 mReportedRunning = true; 2558 } 2559 } else { 2560 if (mReportedRunning) { 2561 // Last reported we were running, time to stop. 2562 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2563 mLastRunningWifiUids.clear(); 2564 mReportedRunning = false; 2565 } 2566 } 2567 mWakeLock.setWorkSource(newSource); 2568 } catch (RemoteException ignore) { 2569 } 2570 } 2571 } 2572 2573 @Override 2574 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2575 super.dump(fd, pw, args); 2576 mSupplicantStateTracker.dump(fd, pw, args); 2577 pw.println("mLinkProperties " + mLinkProperties); 2578 pw.println("mWifiInfo " + mWifiInfo); 2579 pw.println("mDhcpResults " + mDhcpResults); 2580 pw.println("mNetworkInfo " + mNetworkInfo); 2581 pw.println("mLastSignalLevel " + mLastSignalLevel); 2582 pw.println("mLastBssid " + mLastBssid); 2583 pw.println("mLastNetworkId " + mLastNetworkId); 2584 pw.println("mOperationalMode " + mOperationalMode); 2585 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2586 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2587 pw.println("Supplicant status " + mWifiNative.status(true)); 2588 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2589 pw.println("mSetCountryCode " + mSetCountryCode); 2590 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2591 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2592 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2593 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2594 pw.println("SSID whitelist :" ); 2595 for (int i=0; i < mWhiteListedSsids.length; i++) { 2596 pw.println(" " + mWhiteListedSsids[i]); 2597 } 2598 } 2599 mNetworkFactory.dump(fd, pw, args); 2600 mUntrustedNetworkFactory.dump(fd, pw, args); 2601 pw.println(); 2602 mWifiConfigStore.dump(fd, pw, args); 2603 pw.println(); 2604 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2605 mWifiLogger.dump(fd, pw, args); 2606 } 2607 2608 /** 2609 * ****************************************************** 2610 * Internal private functions 2611 * ****************************************************** 2612 */ 2613 2614 private void logStateAndMessage(Message message, String state) { 2615 messageHandlingStatus = 0; 2616 if (mLogMessages) { 2617 //long now = SystemClock.elapsedRealtimeNanos(); 2618 //String ts = String.format("[%,d us]", now/1000); 2619 2620 logd(" " + state + " " + getLogRecString(message)); 2621 } 2622 } 2623 2624 /** 2625 * helper, prints the milli time since boot wi and w/o suspended time 2626 */ 2627 String printTime() { 2628 StringBuilder sb = new StringBuilder(); 2629 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2630 sb.append("/").append(SystemClock.elapsedRealtime()); 2631 return sb.toString(); 2632 } 2633 2634 /** 2635 * Return the additional string to be logged by LogRec, default 2636 * 2637 * @param msg that was processed 2638 * @return information to be logged as a String 2639 */ 2640 protected String getLogRecString(Message msg) { 2641 WifiConfiguration config; 2642 Long now; 2643 String report; 2644 String key; 2645 StringBuilder sb = new StringBuilder(); 2646 if (mScreenOn) { 2647 sb.append("!"); 2648 } 2649 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2650 sb.append("(").append(messageHandlingStatus).append(")"); 2651 } 2652 sb.append(smToString(msg)); 2653 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2654 sb.append(" uid=" + msg.sendingUid); 2655 } 2656 sb.append(" ").append(printTime()); 2657 switch (msg.what) { 2658 case CMD_STARTED_GSCAN_DBG: 2659 case CMD_STARTED_PNO_DBG: 2660 sb.append(" "); 2661 sb.append(Integer.toString(msg.arg1)); 2662 sb.append(" "); 2663 sb.append(Integer.toString(msg.arg2)); 2664 if (msg.obj != null) { 2665 sb.append(" " + (String)msg.obj); 2666 } 2667 break; 2668 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2669 sb.append(" "); 2670 sb.append(Integer.toString(msg.arg1)); 2671 sb.append(" "); 2672 sb.append(Integer.toString(msg.arg2)); 2673 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2674 if (msg.obj != null) { 2675 sb.append(" " + (String)msg.obj); 2676 } 2677 break; 2678 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2679 sb.append(" "); 2680 sb.append(Integer.toString(msg.arg1)); 2681 sb.append(" "); 2682 sb.append(Integer.toString(msg.arg2)); 2683 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2684 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2685 sb.append(" autojoinAllowed="); 2686 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2687 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2688 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2689 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2690 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2691 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2692 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2693 break; 2694 case CMD_PNO_NETWORK_FOUND: 2695 sb.append(" "); 2696 sb.append(Integer.toString(msg.arg1)); 2697 sb.append(" "); 2698 sb.append(Integer.toString(msg.arg2)); 2699 if (msg.obj != null) { 2700 ScanResult[] results = (ScanResult[])msg.obj; 2701 for (int i = 0; i < results.length; i++) { 2702 sb.append(" ").append(results[i].SSID).append(" "); 2703 sb.append(results[i].frequency); 2704 sb.append(" ").append(results[i].level); 2705 } 2706 } 2707 break; 2708 case CMD_START_SCAN: 2709 now = System.currentTimeMillis(); 2710 sb.append(" "); 2711 sb.append(Integer.toString(msg.arg1)); 2712 sb.append(" "); 2713 sb.append(Integer.toString(msg.arg2)); 2714 sb.append(" ic="); 2715 sb.append(Integer.toString(sScanAlarmIntentCount)); 2716 if (msg.obj != null) { 2717 Bundle bundle = (Bundle) msg.obj; 2718 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2719 if (request != 0) { 2720 sb.append(" proc(ms):").append(now - request); 2721 } 2722 } 2723 if (mIsScanOngoing) sb.append(" onGoing"); 2724 if (mIsFullScanOngoing) sb.append(" full"); 2725 if (lastStartScanTimeStamp != 0) { 2726 sb.append(" started:").append(lastStartScanTimeStamp); 2727 sb.append(",").append(now - lastStartScanTimeStamp); 2728 } 2729 if (lastScanDuration != 0) { 2730 sb.append(" dur:").append(lastScanDuration); 2731 } 2732 sb.append(" cnt=").append(mDelayedScanCounter); 2733 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2734 sb.append(" f=").append(mWifiInfo.getFrequency()); 2735 sb.append(" sc=").append(mWifiInfo.score); 2736 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2737 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2738 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2739 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2740 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2741 if (lastScanFreqs != null) { 2742 sb.append(" list=").append(lastScanFreqs); 2743 } else { 2744 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2745 } 2746 report = reportOnTime(); 2747 if (report != null) { 2748 sb.append(" ").append(report); 2749 } 2750 break; 2751 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2752 sb.append(" "); 2753 sb.append(Integer.toString(msg.arg1)); 2754 sb.append(" "); 2755 sb.append(Integer.toString(msg.arg2)); 2756 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2757 if (stateChangeResult != null) { 2758 sb.append(stateChangeResult.toString()); 2759 } 2760 break; 2761 case WifiManager.SAVE_NETWORK: 2762 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2763 sb.append(" "); 2764 sb.append(Integer.toString(msg.arg1)); 2765 sb.append(" "); 2766 sb.append(Integer.toString(msg.arg2)); 2767 if (lastSavedConfigurationAttempt != null) { 2768 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2769 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2770 if (lastSavedConfigurationAttempt.hiddenSSID) { 2771 sb.append(" hidden"); 2772 } 2773 if (lastSavedConfigurationAttempt.preSharedKey != null 2774 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2775 sb.append(" hasPSK"); 2776 } 2777 if (lastSavedConfigurationAttempt.ephemeral) { 2778 sb.append(" ephemeral"); 2779 } 2780 if (lastSavedConfigurationAttempt.selfAdded) { 2781 sb.append(" selfAdded"); 2782 } 2783 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2784 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2785 } 2786 break; 2787 case WifiManager.FORGET_NETWORK: 2788 sb.append(" "); 2789 sb.append(Integer.toString(msg.arg1)); 2790 sb.append(" "); 2791 sb.append(Integer.toString(msg.arg2)); 2792 if (lastForgetConfigurationAttempt != null) { 2793 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2794 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2795 if (lastForgetConfigurationAttempt.hiddenSSID) { 2796 sb.append(" hidden"); 2797 } 2798 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2799 sb.append(" hasPSK"); 2800 } 2801 if (lastForgetConfigurationAttempt.ephemeral) { 2802 sb.append(" ephemeral"); 2803 } 2804 if (lastForgetConfigurationAttempt.selfAdded) { 2805 sb.append(" selfAdded"); 2806 } 2807 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2808 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2809 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2810 } 2811 break; 2812 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2813 sb.append(" "); 2814 sb.append(Integer.toString(msg.arg1)); 2815 sb.append(" "); 2816 sb.append(Integer.toString(msg.arg2)); 2817 String bssid = (String) msg.obj; 2818 if (bssid != null && bssid.length() > 0) { 2819 sb.append(" "); 2820 sb.append(bssid); 2821 } 2822 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2823 break; 2824 case WifiMonitor.SCAN_RESULTS_EVENT: 2825 sb.append(" "); 2826 sb.append(Integer.toString(msg.arg1)); 2827 sb.append(" "); 2828 sb.append(Integer.toString(msg.arg2)); 2829 if (mScanResults != null) { 2830 sb.append(" found="); 2831 sb.append(mScanResults.size()); 2832 } 2833 sb.append(" known=").append(mNumScanResultsKnown); 2834 sb.append(" got=").append(mNumScanResultsReturned); 2835 if (lastScanDuration != 0) { 2836 sb.append(" dur:").append(lastScanDuration); 2837 } 2838 if (mOnTime != 0) { 2839 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2840 sb.append(",").append(mOnTime); 2841 } 2842 if (mTxTime != 0) { 2843 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2844 sb.append(",").append(mTxTime); 2845 } 2846 if (mRxTime != 0) { 2847 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2848 sb.append(",").append(mRxTime); 2849 } 2850 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2851 sb.append(String.format(" con=%d", mConnectionRequests)); 2852 key = mWifiConfigStore.getLastSelectedConfiguration(); 2853 if (key != null) { 2854 sb.append(" last=").append(key); 2855 } 2856 break; 2857 case WifiMonitor.SCAN_FAILED_EVENT: 2858 break; 2859 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2860 sb.append(" "); 2861 sb.append(Integer.toString(msg.arg1)); 2862 sb.append(" "); 2863 sb.append(Integer.toString(msg.arg2)); 2864 sb.append(" ").append(mLastBssid); 2865 sb.append(" nid=").append(mLastNetworkId); 2866 config = getCurrentWifiConfiguration(); 2867 if (config != null) { 2868 sb.append(" ").append(config.configKey()); 2869 } 2870 key = mWifiConfigStore.getLastSelectedConfiguration(); 2871 if (key != null) { 2872 sb.append(" last=").append(key); 2873 } 2874 break; 2875 case CMD_TARGET_BSSID: 2876 case CMD_ASSOCIATED_BSSID: 2877 sb.append(" "); 2878 sb.append(Integer.toString(msg.arg1)); 2879 sb.append(" "); 2880 sb.append(Integer.toString(msg.arg2)); 2881 if (msg.obj != null) { 2882 sb.append(" BSSID=").append((String) msg.obj); 2883 } 2884 if (mTargetRoamBSSID != null) { 2885 sb.append(" Target=").append(mTargetRoamBSSID); 2886 } 2887 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2888 break; 2889 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2890 if (msg.obj != null) { 2891 sb.append(" ").append((String) msg.obj); 2892 } 2893 sb.append(" nid=").append(msg.arg1); 2894 sb.append(" reason=").append(msg.arg2); 2895 if (mLastBssid != null) { 2896 sb.append(" lastbssid=").append(mLastBssid); 2897 } 2898 if (mWifiInfo.getFrequency() != -1) { 2899 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2900 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2901 } 2902 if (linkDebouncing) { 2903 sb.append(" debounce"); 2904 } 2905 break; 2906 case WifiMonitor.SSID_TEMP_DISABLED: 2907 case WifiMonitor.SSID_REENABLED: 2908 sb.append(" nid=").append(msg.arg1); 2909 if (msg.obj != null) { 2910 sb.append(" ").append((String) msg.obj); 2911 } 2912 config = getCurrentWifiConfiguration(); 2913 if (config != null) { 2914 sb.append(" cur=").append(config.configKey()); 2915 sb.append(" ajst=").append(config.autoJoinStatus); 2916 if (config.selfAdded) { 2917 sb.append(" selfAdded"); 2918 } 2919 if (config.status != 0) { 2920 sb.append(" st=").append(config.status); 2921 sb.append(" rs=").append(config.disableReason); 2922 } 2923 if (config.lastConnected != 0) { 2924 now = System.currentTimeMillis(); 2925 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2926 } 2927 if (mLastBssid != null) { 2928 sb.append(" lastbssid=").append(mLastBssid); 2929 } 2930 if (mWifiInfo.getFrequency() != -1) { 2931 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2932 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2933 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2934 } 2935 } 2936 break; 2937 case CMD_RSSI_POLL: 2938 case CMD_UNWANTED_NETWORK: 2939 case WifiManager.RSSI_PKTCNT_FETCH: 2940 sb.append(" "); 2941 sb.append(Integer.toString(msg.arg1)); 2942 sb.append(" "); 2943 sb.append(Integer.toString(msg.arg2)); 2944 if (mWifiInfo.getSSID() != null) 2945 if (mWifiInfo.getSSID() != null) 2946 sb.append(" ").append(mWifiInfo.getSSID()); 2947 if (mWifiInfo.getBSSID() != null) 2948 sb.append(" ").append(mWifiInfo.getBSSID()); 2949 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2950 sb.append(" f=").append(mWifiInfo.getFrequency()); 2951 sb.append(" sc=").append(mWifiInfo.score); 2952 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2953 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2954 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2955 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2956 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2957 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2958 report = reportOnTime(); 2959 if (report != null) { 2960 sb.append(" ").append(report); 2961 } 2962 if (wifiScoringReport != null) { 2963 sb.append(wifiScoringReport); 2964 } 2965 if (mConnectedModeGScanOffloadStarted) { 2966 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2967 } else { 2968 sb.append(" offload-stopped"); 2969 } 2970 break; 2971 case CMD_AUTO_CONNECT: 2972 case WifiManager.CONNECT_NETWORK: 2973 sb.append(" "); 2974 sb.append(Integer.toString(msg.arg1)); 2975 sb.append(" "); 2976 sb.append(Integer.toString(msg.arg2)); 2977 config = (WifiConfiguration) msg.obj; 2978 if (config != null) { 2979 sb.append(" ").append(config.configKey()); 2980 if (config.visibility != null) { 2981 sb.append(" ").append(config.visibility.toString()); 2982 } 2983 } 2984 if (mTargetRoamBSSID != null) { 2985 sb.append(" ").append(mTargetRoamBSSID); 2986 } 2987 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2988 config = getCurrentWifiConfiguration(); 2989 if (config != null) { 2990 sb.append(config.configKey()); 2991 if (config.visibility != null) { 2992 sb.append(" ").append(config.visibility.toString()); 2993 } 2994 } 2995 break; 2996 case CMD_AUTO_ROAM: 2997 sb.append(" "); 2998 sb.append(Integer.toString(msg.arg1)); 2999 sb.append(" "); 3000 sb.append(Integer.toString(msg.arg2)); 3001 ScanResult result = (ScanResult) msg.obj; 3002 if (result != null) { 3003 now = System.currentTimeMillis(); 3004 sb.append(" bssid=").append(result.BSSID); 3005 sb.append(" rssi=").append(result.level); 3006 sb.append(" freq=").append(result.frequency); 3007 if (result.seen > 0 && result.seen < now) { 3008 sb.append(" seen=").append(now - result.seen); 3009 } else { 3010 // Somehow the timestamp for this scan result is inconsistent 3011 sb.append(" !seen=").append(result.seen); 3012 } 3013 } 3014 if (mTargetRoamBSSID != null) { 3015 sb.append(" ").append(mTargetRoamBSSID); 3016 } 3017 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3018 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3019 break; 3020 case CMD_ADD_OR_UPDATE_NETWORK: 3021 sb.append(" "); 3022 sb.append(Integer.toString(msg.arg1)); 3023 sb.append(" "); 3024 sb.append(Integer.toString(msg.arg2)); 3025 if (msg.obj != null) { 3026 config = (WifiConfiguration) msg.obj; 3027 sb.append(" ").append(config.configKey()); 3028 sb.append(" prio=").append(config.priority); 3029 sb.append(" status=").append(config.status); 3030 if (config.BSSID != null) { 3031 sb.append(" ").append(config.BSSID); 3032 } 3033 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3034 if (curConfig != null) { 3035 if (curConfig.configKey().equals(config.configKey())) { 3036 sb.append(" is current"); 3037 } else { 3038 sb.append(" current=").append(curConfig.configKey()); 3039 sb.append(" prio=").append(curConfig.priority); 3040 sb.append(" status=").append(curConfig.status); 3041 } 3042 } 3043 } 3044 break; 3045 case WifiManager.DISABLE_NETWORK: 3046 case CMD_ENABLE_NETWORK: 3047 sb.append(" "); 3048 sb.append(Integer.toString(msg.arg1)); 3049 sb.append(" "); 3050 sb.append(Integer.toString(msg.arg2)); 3051 key = mWifiConfigStore.getLastSelectedConfiguration(); 3052 if (key != null) { 3053 sb.append(" last=").append(key); 3054 } 3055 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3056 if (config != null && (key == null || !config.configKey().equals(key))) { 3057 sb.append(" target=").append(key); 3058 } 3059 break; 3060 case CMD_GET_CONFIGURED_NETWORKS: 3061 sb.append(" "); 3062 sb.append(Integer.toString(msg.arg1)); 3063 sb.append(" "); 3064 sb.append(Integer.toString(msg.arg2)); 3065 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3066 break; 3067 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3068 sb.append(" "); 3069 sb.append(Integer.toString(msg.arg1)); 3070 sb.append(" "); 3071 sb.append(Integer.toString(msg.arg2)); 3072 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3073 sb.append(",").append(mWifiInfo.txBad); 3074 sb.append(",").append(mWifiInfo.txRetries); 3075 break; 3076 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3077 sb.append(" "); 3078 sb.append(Integer.toString(msg.arg1)); 3079 sb.append(" "); 3080 sb.append(Integer.toString(msg.arg2)); 3081 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3082 sb.append(" OK "); 3083 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3084 sb.append(" FAIL "); 3085 } 3086 if (mLinkProperties != null) { 3087 if (mLinkProperties.hasIPv4Address()) { 3088 sb.append(" v4"); 3089 } 3090 if (mLinkProperties.hasGlobalIPv6Address()) { 3091 sb.append(" v6"); 3092 } 3093 if (mLinkProperties.hasIPv4DefaultRoute()) { 3094 sb.append(" v4r"); 3095 } 3096 if (mLinkProperties.hasIPv6DefaultRoute()) { 3097 sb.append(" v6r"); 3098 } 3099 if (mLinkProperties.hasIPv4DnsServer()) { 3100 sb.append(" v4dns"); 3101 } 3102 if (mLinkProperties.hasIPv6DnsServer()) { 3103 sb.append(" v6dns"); 3104 } 3105 } 3106 break; 3107 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3108 sb.append(" "); 3109 sb.append(Integer.toString(msg.arg1)); 3110 sb.append(" "); 3111 sb.append(Integer.toString(msg.arg2)); 3112 if (msg.obj != null) { 3113 NetworkInfo info = (NetworkInfo) msg.obj; 3114 NetworkInfo.State state = info.getState(); 3115 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3116 if (state != null) { 3117 sb.append(" st=").append(state); 3118 } 3119 if (detailedState != null) { 3120 sb.append("/").append(detailedState); 3121 } 3122 } 3123 break; 3124 case CMD_IP_CONFIGURATION_LOST: 3125 int count = -1; 3126 WifiConfiguration c = getCurrentWifiConfiguration(); 3127 if (c != null) count = c.numIpConfigFailures; 3128 sb.append(" "); 3129 sb.append(Integer.toString(msg.arg1)); 3130 sb.append(" "); 3131 sb.append(Integer.toString(msg.arg2)); 3132 sb.append(" failures: "); 3133 sb.append(Integer.toString(count)); 3134 sb.append("/"); 3135 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3136 if (mWifiInfo.getBSSID() != null) { 3137 sb.append(" ").append(mWifiInfo.getBSSID()); 3138 } 3139 if (c != null) { 3140 ScanDetailCache scanDetailCache = 3141 mWifiConfigStore.getScanDetailCache(c); 3142 if (scanDetailCache != null) { 3143 for (ScanDetail sd : scanDetailCache.values()) { 3144 ScanResult r = sd.getScanResult(); 3145 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3146 sb.append(" ipfail=").append(r.numIpConfigFailures); 3147 sb.append(",st=").append(r.autoJoinStatus); 3148 } 3149 } 3150 } 3151 sb.append(" -> ajst=").append(c.autoJoinStatus); 3152 sb.append(" ").append(c.disableReason); 3153 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3154 sb.append(",").append(mWifiInfo.txBad); 3155 sb.append(",").append(mWifiInfo.txRetries); 3156 } 3157 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3158 break; 3159 case CMD_UPDATE_LINKPROPERTIES: 3160 sb.append(" "); 3161 sb.append(Integer.toString(msg.arg1)); 3162 sb.append(" "); 3163 sb.append(Integer.toString(msg.arg2)); 3164 if (mLinkProperties != null) { 3165 if (mLinkProperties.hasIPv4Address()) { 3166 sb.append(" v4"); 3167 } 3168 if (mLinkProperties.hasGlobalIPv6Address()) { 3169 sb.append(" v6"); 3170 } 3171 if (mLinkProperties.hasIPv4DefaultRoute()) { 3172 sb.append(" v4r"); 3173 } 3174 if (mLinkProperties.hasIPv6DefaultRoute()) { 3175 sb.append(" v6r"); 3176 } 3177 if (mLinkProperties.hasIPv4DnsServer()) { 3178 sb.append(" v4dns"); 3179 } 3180 if (mLinkProperties.hasIPv6DnsServer()) { 3181 sb.append(" v6dns"); 3182 } 3183 } 3184 break; 3185 case CMD_IP_REACHABILITY_LOST: 3186 if (msg.obj != null) { 3187 sb.append(" ").append((String) msg.obj); 3188 } 3189 break; 3190 case CMD_SET_COUNTRY_CODE: 3191 sb.append(" "); 3192 sb.append(Integer.toString(msg.arg1)); 3193 sb.append(" "); 3194 sb.append(Integer.toString(msg.arg2)); 3195 if (msg.obj != null) { 3196 sb.append(" ").append((String) msg.obj); 3197 } 3198 break; 3199 case CMD_ROAM_WATCHDOG_TIMER: 3200 sb.append(" "); 3201 sb.append(Integer.toString(msg.arg1)); 3202 sb.append(" "); 3203 sb.append(Integer.toString(msg.arg2)); 3204 sb.append(" cur=").append(roamWatchdogCount); 3205 break; 3206 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3207 sb.append(" "); 3208 sb.append(Integer.toString(msg.arg1)); 3209 sb.append(" "); 3210 sb.append(Integer.toString(msg.arg2)); 3211 sb.append(" cur=").append(disconnectingWatchdogCount); 3212 break; 3213 default: 3214 sb.append(" "); 3215 sb.append(Integer.toString(msg.arg1)); 3216 sb.append(" "); 3217 sb.append(Integer.toString(msg.arg2)); 3218 break; 3219 } 3220 3221 return sb.toString(); 3222 } 3223 3224 private void stopPnoOffload() { 3225 3226 // clear the PNO list 3227 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3228 Log.e(TAG, "Failed to stop pno"); 3229 } 3230 3231 } 3232 3233 3234 private boolean configureSsidWhiteList() { 3235 3236 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3237 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3238 return true; 3239 } 3240 3241 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3242 loge("configureSsidWhiteList couldnt program SSID list, size " 3243 + mWhiteListedSsids.length); 3244 return false; 3245 } 3246 3247 logd("configureSsidWhiteList success"); 3248 return true; 3249 } 3250 3251 // In associated more, lazy roam will be looking for 5GHz roam candidate 3252 private boolean configureLazyRoam() { 3253 boolean status; 3254 if (!useHalBasedAutoJoinOffload()) return false; 3255 3256 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3257 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3258 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3259 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3260 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3261 params.A_band_max_boost = 65; 3262 params.lazy_roam_hysteresis = 25; 3263 params.alert_roam_rssi_trigger = -75; 3264 3265 if (DBG) { 3266 Log.e(TAG, "configureLazyRoam " + params.toString()); 3267 } 3268 3269 if (!WifiNative.setLazyRoam(true, params)) { 3270 3271 Log.e(TAG, "configureLazyRoam couldnt program params"); 3272 3273 return false; 3274 } 3275 if (DBG) { 3276 Log.e(TAG, "configureLazyRoam success"); 3277 } 3278 return true; 3279 } 3280 3281 // In associated more, lazy roam will be looking for 5GHz roam candidate 3282 private boolean stopLazyRoam() { 3283 boolean status; 3284 if (!useHalBasedAutoJoinOffload()) return false; 3285 if (DBG) { 3286 Log.e(TAG, "stopLazyRoam"); 3287 } 3288 return WifiNative.setLazyRoam(false, null); 3289 } 3290 3291 private boolean startGScanConnectedModeOffload(String reason) { 3292 if (DBG) { 3293 if (reason == null) { 3294 reason = ""; 3295 } 3296 logd("startGScanConnectedModeOffload " + reason); 3297 } 3298 stopGScan("startGScanConnectedModeOffload " + reason); 3299 if (!mScreenOn) return false; 3300 3301 if (USE_PAUSE_SCANS) { 3302 mWifiNative.pauseScan(); 3303 } 3304 mPnoEnabled = configurePno(); 3305 if (mPnoEnabled == false) { 3306 if (USE_PAUSE_SCANS) { 3307 mWifiNative.restartScan(); 3308 } 3309 return false; 3310 } 3311 mLazyRoamEnabled = configureLazyRoam(); 3312 if (mLazyRoamEnabled == false) { 3313 if (USE_PAUSE_SCANS) { 3314 mWifiNative.restartScan(); 3315 } 3316 return false; 3317 } 3318 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3319 configureSsidWhiteList(); 3320 } 3321 if (!startConnectedGScan(reason)) { 3322 if (USE_PAUSE_SCANS) { 3323 mWifiNative.restartScan(); 3324 } 3325 return false; 3326 } 3327 if (USE_PAUSE_SCANS) { 3328 mWifiNative.restartScan(); 3329 } 3330 mConnectedModeGScanOffloadStarted = true; 3331 if (DBG) { 3332 logd("startGScanConnectedModeOffload success"); 3333 } 3334 return true; 3335 } 3336 3337 private boolean startGScanDisconnectedModeOffload(String reason) { 3338 if (DBG) { 3339 logd("startGScanDisconnectedModeOffload " + reason); 3340 } 3341 stopGScan("startGScanDisconnectedModeOffload " + reason); 3342 if (USE_PAUSE_SCANS) { 3343 mWifiNative.pauseScan(); 3344 } 3345 mPnoEnabled = configurePno(); 3346 if (mPnoEnabled == false) { 3347 if (USE_PAUSE_SCANS) { 3348 mWifiNative.restartScan(); 3349 } 3350 return false; 3351 } 3352 if (!startDisconnectedGScan(reason)) { 3353 if (USE_PAUSE_SCANS) { 3354 mWifiNative.restartScan(); 3355 } 3356 return false; 3357 } 3358 if (USE_PAUSE_SCANS) { 3359 mWifiNative.restartScan(); 3360 } 3361 return true; 3362 } 3363 3364 private boolean configurePno() { 3365 if (!useHalBasedAutoJoinOffload()) return false; 3366 3367 if (mWifiScanner == null) { 3368 log("configurePno: mWifiScanner is null "); 3369 return true; 3370 } 3371 3372 List<WifiNative.WifiPnoNetwork> llist 3373 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3374 if (llist == null || llist.size() == 0) { 3375 stopPnoOffload(); 3376 log("configurePno: empty PNO list "); 3377 return true; 3378 } 3379 if (DBG) { 3380 log("configurePno: got llist size " + llist.size()); 3381 } 3382 3383 // first program the network we want to look for thru the pno API 3384 WifiNative.WifiPnoNetwork list[] 3385 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3386 3387 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3388 Log.e(TAG, "Failed to set pno, length = " + list.length); 3389 return false; 3390 } 3391 3392 if (true) { 3393 StringBuilder sb = new StringBuilder(); 3394 for (WifiNative.WifiPnoNetwork network : list) { 3395 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3396 sb.append(" flags="); 3397 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3398 sb.append("] "); 3399 3400 } 3401 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3402 } 3403 return true; 3404 } 3405 3406 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3407 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3408 3409 private boolean startConnectedGScan(String reason) { 3410 // send a scan background request so as to kick firmware 3411 // 5GHz roaming and autojoin 3412 // We do this only if screen is on 3413 WifiScanner.ScanSettings settings; 3414 3415 if (mPnoEnabled || mLazyRoamEnabled) { 3416 settings = new WifiScanner.ScanSettings(); 3417 settings.band = WifiScanner.WIFI_BAND_BOTH; 3418 long now = System.currentTimeMillis(); 3419 3420 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3421 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3422 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3423 } else { 3424 mGScanStartTimeMilli = now; 3425 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3426 // if we start offload with short interval, then reconfigure it after a given 3427 // duration of time so as to reduce the scan frequency 3428 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3429 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3430 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3431 (long)delay); 3432 mRestartAutoJoinOffloadCounter++; 3433 } 3434 mGScanPeriodMilli = settings.periodInMs; 3435 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3436 if (DBG) { 3437 log("startConnectedScan: settings band="+ settings.band 3438 + " period=" + settings.periodInMs); 3439 } 3440 3441 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3442 if (true) { 3443 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3444 } 3445 } 3446 return true; 3447 } 3448 3449 private boolean startDisconnectedGScan(String reason) { 3450 // send a scan background request so as to kick firmware 3451 // PNO 3452 // This is done in both screen On and screen Off modes 3453 WifiScanner.ScanSettings settings; 3454 3455 if (mWifiScanner == null) { 3456 log("startDisconnectedGScan: no wifi scanner"); 3457 return false; 3458 } 3459 3460 if (mPnoEnabled || mLazyRoamEnabled) { 3461 settings = new WifiScanner.ScanSettings(); 3462 settings.band = WifiScanner.WIFI_BAND_BOTH; 3463 long now = System.currentTimeMillis(); 3464 3465 3466 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3467 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3468 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3469 } else { 3470 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3471 mGScanStartTimeMilli = now; 3472 // if we start offload with short interval, then reconfigure it after a given 3473 // duration of time so as to reduce the scan frequency 3474 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3475 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3476 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3477 (long)delay); 3478 mRestartAutoJoinOffloadCounter++; 3479 } 3480 mGScanPeriodMilli = settings.periodInMs; 3481 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3482 if (DBG) { 3483 log("startDisconnectedScan: settings band="+ settings.band 3484 + " period=" + settings.periodInMs); 3485 } 3486 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3487 if (true) { 3488 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3489 } 3490 } 3491 return true; 3492 } 3493 3494 private boolean stopGScan(String reason) { 3495 mGScanStartTimeMilli = 0; 3496 mGScanPeriodMilli = 0; 3497 if (mWifiScanner != null) { 3498 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3499 } 3500 mConnectedModeGScanOffloadStarted = false; 3501 if (true) { 3502 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3503 } 3504 return true; 3505 } 3506 3507 private void handleScreenStateChanged(boolean screenOn) { 3508 mScreenOn = screenOn; 3509 if (PDBG) { 3510 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3511 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3512 + " state " + getCurrentState().getName() 3513 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3514 } 3515 enableRssiPolling(screenOn); 3516 if (mUserWantsSuspendOpt.get()) { 3517 if (screenOn) { 3518 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3519 } else { 3520 // Allow 2s for suspend optimizations to be set 3521 mSuspendWakeLock.acquire(2000); 3522 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3523 } 3524 } 3525 mScreenBroadcastReceived.set(true); 3526 3527 getWifiLinkLayerStats(false); 3528 mOnTimeScreenStateChange = mOnTime; 3529 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3530 3531 cancelDelayedScan(); 3532 3533 if (screenOn) { 3534 enableBackgroundScan(false); 3535 setScanAlarm(false); 3536 clearBlacklist(); 3537 3538 fullBandConnectedTimeIntervalMilli 3539 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3540 // In either Disconnectedstate or ConnectedState, 3541 // start the scan alarm so as to enable autojoin 3542 if (getCurrentState() == mConnectedState 3543 && allowFullBandScanAndAssociated()) { 3544 if (useHalBasedAutoJoinOffload()) { 3545 startGScanConnectedModeOffload("screenOnConnected"); 3546 } else { 3547 // Scan after 500ms 3548 startDelayedScan(500, null, null); 3549 } 3550 } else if (getCurrentState() == mDisconnectedState) { 3551 if (useHalBasedAutoJoinOffload()) { 3552 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3553 } else { 3554 // Scan after 500ms 3555 startDelayedScan(500, null, null); 3556 } 3557 } 3558 } else { 3559 if (getCurrentState() == mDisconnectedState) { 3560 // Screen Off and Disconnected and chipset doesn't support scan offload 3561 // => start scan alarm 3562 // Screen Off and Disconnected and chipset does support scan offload 3563 // => will use scan offload (i.e. background scan) 3564 if (useHalBasedAutoJoinOffload()) { 3565 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3566 } else { 3567 if (!mBackgroundScanSupported) { 3568 setScanAlarm(true); 3569 } else { 3570 if (!mIsScanOngoing) { 3571 enableBackgroundScan(true); 3572 } 3573 } 3574 } 3575 } else { 3576 enableBackgroundScan(false); 3577 if (useHalBasedAutoJoinOffload()) { 3578 // don't try stop Gscan if it is not enabled 3579 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3580 } 3581 } 3582 } 3583 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3584 3585 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3586 } 3587 3588 private void checkAndSetConnectivityInstance() { 3589 if (mCm == null) { 3590 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3591 } 3592 } 3593 3594 private boolean startTethering(ArrayList<String> available) { 3595 3596 boolean wifiAvailable = false; 3597 3598 checkAndSetConnectivityInstance(); 3599 3600 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3601 3602 for (String intf : available) { 3603 for (String regex : wifiRegexs) { 3604 if (intf.matches(regex)) { 3605 3606 InterfaceConfiguration ifcg = null; 3607 try { 3608 ifcg = mNwService.getInterfaceConfig(intf); 3609 if (ifcg != null) { 3610 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3611 ifcg.setLinkAddress(new LinkAddress( 3612 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3613 ifcg.setInterfaceUp(); 3614 3615 mNwService.setInterfaceConfig(intf, ifcg); 3616 } 3617 } catch (Exception e) { 3618 loge("Error configuring interface " + intf + ", :" + e); 3619 return false; 3620 } 3621 3622 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3623 loge("Error tethering on " + intf); 3624 return false; 3625 } 3626 mTetherInterfaceName = intf; 3627 return true; 3628 } 3629 } 3630 } 3631 // We found no interfaces to tether 3632 return false; 3633 } 3634 3635 private void stopTethering() { 3636 3637 checkAndSetConnectivityInstance(); 3638 3639 /* Clear the interface config to allow dhcp correctly configure new 3640 ip settings */ 3641 InterfaceConfiguration ifcg = null; 3642 try { 3643 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3644 if (ifcg != null) { 3645 ifcg.setLinkAddress( 3646 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3647 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3648 } 3649 } catch (Exception e) { 3650 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3651 } 3652 3653 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3654 loge("Untether initiate failed!"); 3655 } 3656 } 3657 3658 private boolean isWifiTethered(ArrayList<String> active) { 3659 3660 checkAndSetConnectivityInstance(); 3661 3662 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3663 for (String intf : active) { 3664 for (String regex : wifiRegexs) { 3665 if (intf.matches(regex)) { 3666 return true; 3667 } 3668 } 3669 } 3670 // We found no interfaces that are tethered 3671 return false; 3672 } 3673 3674 /** 3675 * Set the country code from the system setting value, if any. 3676 */ 3677 private void initializeCountryCode() { 3678 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3679 Settings.Global.WIFI_COUNTRY_CODE); 3680 if (countryCode != null && !countryCode.isEmpty()) { 3681 setCountryCode(countryCode, false); 3682 } else { 3683 //use driver default 3684 } 3685 } 3686 3687 /** 3688 * Set the frequency band from the system setting value, if any. 3689 */ 3690 private void setFrequencyBand() { 3691 int band = Settings.Global.getInt(mContext.getContentResolver(), 3692 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3693 3694 if (mWifiNative.setBand(band)) { 3695 mFrequencyBand.set(band); 3696 if (PDBG) { 3697 logd("done set frequency band " + band); 3698 } 3699 } else { 3700 loge("Failed to set frequency band " + band); 3701 } 3702 } 3703 3704 3705 3706 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3707 if (DBG) { 3708 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3709 + " -want " + mUserWantsSuspendOpt.get() 3710 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3711 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3712 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3713 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3714 } 3715 //mWifiNative.setSuspendOptimizations(enabled); 3716 3717 if (enabled) { 3718 mSuspendOptNeedsDisabled &= ~reason; 3719 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3720 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3721 if (DBG) { 3722 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3723 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3724 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3725 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3726 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3727 } 3728 mWifiNative.setSuspendOptimizations(true); 3729 } 3730 } else { 3731 mSuspendOptNeedsDisabled |= reason; 3732 mWifiNative.setSuspendOptimizations(false); 3733 } 3734 } 3735 3736 private void setSuspendOptimizations(int reason, boolean enabled) { 3737 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3738 if (enabled) { 3739 mSuspendOptNeedsDisabled &= ~reason; 3740 } else { 3741 mSuspendOptNeedsDisabled |= reason; 3742 } 3743 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3744 } 3745 3746 private void setWifiState(int wifiState) { 3747 final int previousWifiState = mWifiState.get(); 3748 3749 try { 3750 if (wifiState == WIFI_STATE_ENABLED) { 3751 mBatteryStats.noteWifiOn(); 3752 } else if (wifiState == WIFI_STATE_DISABLED) { 3753 mBatteryStats.noteWifiOff(); 3754 } 3755 } catch (RemoteException e) { 3756 loge("Failed to note battery stats in wifi"); 3757 } 3758 3759 mWifiState.set(wifiState); 3760 3761 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3762 3763 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3764 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3765 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3766 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3767 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3768 } 3769 3770 private void setWifiApState(int wifiApState, int reason) { 3771 final int previousWifiApState = mWifiApState.get(); 3772 3773 try { 3774 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3775 mBatteryStats.noteWifiOn(); 3776 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3777 mBatteryStats.noteWifiOff(); 3778 } 3779 } catch (RemoteException e) { 3780 loge("Failed to note battery stats in wifi"); 3781 } 3782 3783 // Update state 3784 mWifiApState.set(wifiApState); 3785 3786 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3787 3788 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3789 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3790 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3791 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3792 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3793 //only set reason number when softAP start failed 3794 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3795 } 3796 3797 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3798 } 3799 3800 /* 3801 void ageOutScanResults(int age) { 3802 synchronized(mScanResultCache) { 3803 // Trim mScanResults, which prevent WifiStateMachine to return 3804 // obsolete scan results to queriers 3805 long now = System.CurrentTimeMillis(); 3806 for (int i = 0; i < mScanResults.size(); i++) { 3807 ScanResult result = mScanResults.get(i); 3808 if ((result.seen > now || (now - result.seen) > age)) { 3809 mScanResults.remove(i); 3810 } 3811 } 3812 } 3813 }*/ 3814 3815 private static final String IE_STR = "ie="; 3816 private static final String ID_STR = "id="; 3817 private static final String BSSID_STR = "bssid="; 3818 private static final String FREQ_STR = "freq="; 3819 private static final String LEVEL_STR = "level="; 3820 private static final String TSF_STR = "tsf="; 3821 private static final String FLAGS_STR = "flags="; 3822 private static final String SSID_STR = "ssid="; 3823 private static final String DELIMITER_STR = "===="; 3824 private static final String END_STR = "####"; 3825 3826 int emptyScanResultCount = 0; 3827 3828 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3829 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3830 3831 /** 3832 * Format: 3833 * <p/> 3834 * id=1 3835 * bssid=68:7f:76:d7:1a:6e 3836 * freq=2412 3837 * level=-44 3838 * tsf=1344626243700342 3839 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3840 * ssid=zfdy 3841 * ==== 3842 * id=2 3843 * bssid=68:5f:74:d7:1a:6f 3844 * freq=5180 3845 * level=-73 3846 * tsf=1344626243700373 3847 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3848 * ssid=zuby 3849 * ==== 3850 */ 3851 private void setScanResults() { 3852 mNumScanResultsKnown = 0; 3853 mNumScanResultsReturned = 0; 3854 String bssid = ""; 3855 int level = 0; 3856 int freq = 0; 3857 long tsf = 0; 3858 String flags = ""; 3859 WifiSsid wifiSsid = null; 3860 String scanResults; 3861 String tmpResults; 3862 StringBuffer scanResultsBuf = new StringBuffer(); 3863 int sid = 0; 3864 3865 while (true) { 3866 tmpResults = mWifiNative.scanResults(sid); 3867 if (TextUtils.isEmpty(tmpResults)) break; 3868 scanResultsBuf.append(tmpResults); 3869 scanResultsBuf.append("\n"); 3870 String[] lines = tmpResults.split("\n"); 3871 sid = -1; 3872 for (int i = lines.length - 1; i >= 0; i--) { 3873 if (lines[i].startsWith(END_STR)) { 3874 break; 3875 } else if (lines[i].startsWith(ID_STR)) { 3876 try { 3877 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3878 } catch (NumberFormatException e) { 3879 // Nothing to do 3880 } 3881 break; 3882 } 3883 } 3884 if (sid == -1) break; 3885 } 3886 3887 // Age out scan results, we return all scan results found in the last 12 seconds, 3888 // and NOT all scan results since last scan. 3889 // ageOutScanResults(12000); 3890 3891 scanResults = scanResultsBuf.toString(); 3892 if (TextUtils.isEmpty(scanResults)) { 3893 emptyScanResultCount++; 3894 if (emptyScanResultCount > 10) { 3895 // If we got too many empty scan results, the current scan cache is stale, 3896 // hence clear it. 3897 mScanResults = new ArrayList<>(); 3898 } 3899 return; 3900 } 3901 3902 emptyScanResultCount = 0; 3903 3904 mWifiConfigStore.trimANQPCache(false); 3905 3906 // note that all these splits and substrings keep references to the original 3907 // huge string buffer while the amount we really want is generally pretty small 3908 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3909 synchronized (mScanResultCache) { 3910 mScanResults = new ArrayList<>(); 3911 String[] lines = scanResults.split("\n"); 3912 final int bssidStrLen = BSSID_STR.length(); 3913 final int flagLen = FLAGS_STR.length(); 3914 String infoElements = null; 3915 List<String> anqpLines = null; 3916 3917 for (String line : lines) { 3918 if (line.startsWith(BSSID_STR)) { 3919 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3920 } else if (line.startsWith(FREQ_STR)) { 3921 try { 3922 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3923 } catch (NumberFormatException e) { 3924 freq = 0; 3925 } 3926 } else if (line.startsWith(LEVEL_STR)) { 3927 try { 3928 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3929 /* some implementations avoid negative values by adding 256 3930 * so we need to adjust for that here. 3931 */ 3932 if (level > 0) level -= 256; 3933 } catch (NumberFormatException e) { 3934 level = 0; 3935 } 3936 } else if (line.startsWith(TSF_STR)) { 3937 try { 3938 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3939 } catch (NumberFormatException e) { 3940 tsf = 0; 3941 } 3942 } else if (line.startsWith(FLAGS_STR)) { 3943 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3944 } else if (line.startsWith(SSID_STR)) { 3945 wifiSsid = WifiSsid.createFromAsciiEncoded( 3946 line.substring(SSID_STR.length())); 3947 } else if (line.startsWith(IE_STR)) { 3948 infoElements = line; 3949 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3950 if (anqpLines == null) { 3951 anqpLines = new ArrayList<>(); 3952 } 3953 anqpLines.add(line); 3954 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3955 if (bssid != null) { 3956 try { 3957 NetworkDetail networkDetail = 3958 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3959 3960 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3961 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3962 logd(String.format( 3963 "Inconsistent SSID on BSSID '%s': '%s' vs '%s': %s", 3964 bssid, xssid, networkDetail.getSSID(), infoElements)); 3965 } 3966 3967 if (networkDetail.hasInterworking()) { 3968 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3969 } 3970 3971 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3972 if (scanDetail != null) { 3973 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3974 flags, freq, tsf); 3975 } else { 3976 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3977 flags, level, freq, tsf); 3978 mScanResultCache.put(networkDetail, scanDetail); 3979 } 3980 3981 mNumScanResultsReturned++; // Keep track of how many scan results we got 3982 // as part of this scan's processing 3983 mScanResults.add(scanDetail); 3984 } catch (IllegalArgumentException iae) { 3985 Log.d(TAG, "Failed to parse information elements: " + iae); 3986 } 3987 } 3988 bssid = null; 3989 level = 0; 3990 freq = 0; 3991 tsf = 0; 3992 flags = ""; 3993 wifiSsid = null; 3994 infoElements = null; 3995 anqpLines = null; 3996 } 3997 } 3998 } 3999 4000 /* don't attempt autojoin if last connect attempt was just scheduled */ 4001 boolean attemptAutoJoin = 4002 (System.currentTimeMillis() - lastConnectAttemptTimestamp) > CONNECT_TIMEOUT_MSEC; 4003 SupplicantState state = mWifiInfo.getSupplicantState(); 4004 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 4005 if (getCurrentState() == mRoamingState 4006 || getCurrentState() == mObtainingIpState 4007 || getCurrentState() == mScanModeState 4008 || getCurrentState() == mDisconnectingState 4009 || (getCurrentState() == mConnectedState 4010 && !getEnableAutoJoinWhenAssociated()) 4011 || linkDebouncing 4012 || state == SupplicantState.ASSOCIATING 4013 || state == SupplicantState.AUTHENTICATING 4014 || state == SupplicantState.FOUR_WAY_HANDSHAKE 4015 || state == SupplicantState.GROUP_HANDSHAKE 4016 || (/* keep autojoin enabled if user has manually selected a wifi network, 4017 so as to make sure we reliably remain connected to this network */ 4018 mConnectionRequests == 0 && selection == null)) { 4019 // Dont attempt auto-joining again while we are already attempting to join 4020 // and/or obtaining Ip address 4021 attemptAutoJoin = false; 4022 } 4023 if (DBG) { 4024 if (selection == null) { 4025 selection = "<none>"; 4026 } 4027 logd("wifi setScanResults state" + getCurrentState() 4028 + " sup_state=" + state 4029 + " debouncing=" + linkDebouncing 4030 + " mConnectionRequests=" + mConnectionRequests 4031 + " selection=" + selection 4032 + " mNumScanResultsReturned " + mNumScanResultsReturned 4033 + " mScanResults " + mScanResults.size()); 4034 } 4035 if (attemptAutoJoin) { 4036 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 4037 } 4038 // Loose last selected configuration if we have been disconnected for 5 minutes 4039 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 4040 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 4041 } 4042 4043 if (attemptAutoJoin) { 4044 synchronized (mScanResultCache) { 4045 // AutoJoincontroller will directly acces the scan result list and update it with 4046 // ScanResult status 4047 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 4048 } 4049 } 4050 if (linkDebouncing) { 4051 // If debouncing, we dont re-select a SSID or BSSID hence 4052 // there is no need to call the network selection code 4053 // in WifiAutoJoinController, instead, 4054 // just try to reconnect to the same SSID by triggering a roam 4055 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4056 } 4057 } 4058 4059 /* 4060 * Fetch RSSI, linkspeed, and frequency on current connection 4061 */ 4062 private void fetchRssiLinkSpeedAndFrequencyNative() { 4063 int newRssi = -1; 4064 int newLinkSpeed = -1; 4065 int newFrequency = -1; 4066 4067 String signalPoll = mWifiNative.signalPoll(); 4068 4069 if (signalPoll != null) { 4070 String[] lines = signalPoll.split("\n"); 4071 for (String line : lines) { 4072 String[] prop = line.split("="); 4073 if (prop.length < 2) continue; 4074 try { 4075 if (prop[0].equals("RSSI")) { 4076 newRssi = Integer.parseInt(prop[1]); 4077 } else if (prop[0].equals("LINKSPEED")) { 4078 newLinkSpeed = Integer.parseInt(prop[1]); 4079 } else if (prop[0].equals("FREQUENCY")) { 4080 newFrequency = Integer.parseInt(prop[1]); 4081 } 4082 } catch (NumberFormatException e) { 4083 //Ignore, defaults on rssi and linkspeed are assigned 4084 } 4085 } 4086 } 4087 4088 if (PDBG) { 4089 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" 4090 + Integer.toString(newRssi) + " linkspeed=" 4091 + Integer.toString(newLinkSpeed)); 4092 } 4093 4094 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4095 // screen out invalid values 4096 /* some implementations avoid negative values by adding 256 4097 * so we need to adjust for that here. 4098 */ 4099 if (newRssi > 0) newRssi -= 256; 4100 mWifiInfo.setRssi(newRssi); 4101 /* 4102 * Rather then sending the raw RSSI out every time it 4103 * changes, we precalculate the signal level that would 4104 * be displayed in the status bar, and only send the 4105 * broadcast if that much more coarse-grained number 4106 * changes. This cuts down greatly on the number of 4107 * broadcasts, at the cost of not informing others 4108 * interested in RSSI of all the changes in signal 4109 * level. 4110 */ 4111 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4112 if (newSignalLevel != mLastSignalLevel) { 4113 updateCapabilities(getCurrentWifiConfiguration()); 4114 sendRssiChangeBroadcast(newRssi); 4115 } 4116 mLastSignalLevel = newSignalLevel; 4117 } else { 4118 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4119 updateCapabilities(getCurrentWifiConfiguration()); 4120 } 4121 4122 if (newLinkSpeed != -1) { 4123 mWifiInfo.setLinkSpeed(newLinkSpeed); 4124 } 4125 if (newFrequency > 0) { 4126 if (ScanResult.is5GHz(newFrequency)) { 4127 mWifiConnectionStatistics.num5GhzConnected++; 4128 } 4129 if (ScanResult.is24GHz(newFrequency)) { 4130 mWifiConnectionStatistics.num24GhzConnected++; 4131 } 4132 mWifiInfo.setFrequency(newFrequency); 4133 } 4134 mWifiConfigStore.updateConfiguration(mWifiInfo); 4135 } 4136 4137 /** 4138 * Determine if we need to switch network: 4139 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4140 * - match the uregncy of the switch versus the packet usage at the interface 4141 */ 4142 boolean shouldSwitchNetwork(int networkDelta) { 4143 int delta; 4144 if (networkDelta <= 0) { 4145 return false; 4146 } 4147 delta = networkDelta; 4148 if (mWifiInfo != null) { 4149 if (!getEnableAutoJoinWhenAssociated() 4150 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4151 // If AutoJoin while associated is not enabled, 4152 // we should never switch network when already associated 4153 delta = -1000; 4154 } else { 4155 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4156 // TODO: at the interface. We should also discriminate between ucast and mcast, 4157 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4158 // TODO: broadcasts 4159 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4160 delta -= 999; 4161 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4162 delta -= 6; 4163 } 4164 logd("shouldSwitchNetwork " 4165 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4166 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4167 + " delta " + networkDelta + " -> " + delta); 4168 } 4169 } else { 4170 logd("shouldSwitchNetwork " 4171 + " delta " + networkDelta + " -> " + delta); 4172 } 4173 if (delta > 0) { 4174 return true; 4175 } 4176 return false; 4177 } 4178 4179 // Polling has completed, hence we wont have a score anymore 4180 private void cleanWifiScore() { 4181 mWifiInfo.txBadRate = 0; 4182 mWifiInfo.txSuccessRate = 0; 4183 mWifiInfo.txRetriesRate = 0; 4184 mWifiInfo.rxSuccessRate = 0; 4185 } 4186 4187 int mBadLinkspeedcount = 0; 4188 4189 // For debug, provide information about the last scoring operation 4190 String wifiScoringReport = null; 4191 4192 private void calculateWifiScore(WifiLinkLayerStats stats) { 4193 StringBuilder sb = new StringBuilder(); 4194 4195 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4196 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4197 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4198 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4199 < mWifiConfigStore.badLinkSpeed5); 4200 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4201 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4202 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4203 >= mWifiConfigStore.goodLinkSpeed5); 4204 4205 if (isBadLinkspeed) { 4206 if (mBadLinkspeedcount < 6) 4207 mBadLinkspeedcount++; 4208 } else { 4209 if (mBadLinkspeedcount > 0) 4210 mBadLinkspeedcount--; 4211 } 4212 4213 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4214 if (isGoodLinkspeed) sb.append(" gl"); 4215 4216 /** 4217 * We want to make sure that we use the 24GHz RSSI thresholds if 4218 * there are 2.4GHz scan results 4219 * otherwise we end up lowering the score based on 5GHz values 4220 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4221 * We also might unblacklist the configuation based on 2.4GHz 4222 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4223 */ 4224 boolean use24Thresholds = false; 4225 boolean homeNetworkBoost = false; 4226 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4227 ScanDetailCache scanDetailCache = 4228 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4229 if (currentConfiguration != null && scanDetailCache != null) { 4230 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4231 if (currentConfiguration.visibility != null) { 4232 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4233 && currentConfiguration.visibility.rssi24 4234 >= (currentConfiguration.visibility.rssi5 - 2)) { 4235 use24Thresholds = true; 4236 } 4237 } 4238 if (scanDetailCache.size() <= 6 4239 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4240 && currentConfiguration.allowedKeyManagement. 4241 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4242 // A PSK network with less than 6 known BSSIDs 4243 // This is most likely a home network and thus we want to stick to wifi more 4244 homeNetworkBoost = true; 4245 } 4246 } 4247 if (homeNetworkBoost) sb.append(" hn"); 4248 if (use24Thresholds) sb.append(" u24"); 4249 4250 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4251 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4252 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4253 4254 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4255 4256 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4257 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4258 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4259 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4260 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4261 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4262 4263 if (isBadRSSI) sb.append(" br"); 4264 if (isLowRSSI) sb.append(" lr"); 4265 if (isHighRSSI) sb.append(" hr"); 4266 4267 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4268 if (currentConfiguration != null && 4269 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4270 if (isBadRSSI) { 4271 currentConfiguration.numTicksAtBadRSSI++; 4272 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4273 // We remained associated for a compound amount of time while passing 4274 // traffic, hence loose the corresponding user triggered disabled stats 4275 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4276 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4277 } 4278 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4279 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4280 } 4281 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4282 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4283 } 4284 currentConfiguration.numTicksAtBadRSSI = 0; 4285 } 4286 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4287 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4288 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4289 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4290 score = score - 5; 4291 penalizedDueToUserTriggeredDisconnect = 1; 4292 sb.append(" p1"); 4293 } 4294 } else if (isLowRSSI) { 4295 currentConfiguration.numTicksAtLowRSSI++; 4296 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4297 // We remained associated for a compound amount of time while passing 4298 // traffic, hence loose the corresponding user triggered disabled stats 4299 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4300 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4301 } 4302 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4303 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4304 } 4305 currentConfiguration.numTicksAtLowRSSI = 0; 4306 } 4307 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4308 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4309 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4310 score = score - 5; 4311 penalizedDueToUserTriggeredDisconnect = 2; 4312 sb.append(" p2"); 4313 } 4314 } else if (!isHighRSSI) { 4315 currentConfiguration.numTicksAtNotHighRSSI++; 4316 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4317 // We remained associated for a compound amount of time while passing 4318 // traffic, hence loose the corresponding user triggered disabled stats 4319 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4320 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4321 } 4322 currentConfiguration.numTicksAtNotHighRSSI = 0; 4323 } 4324 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4325 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4326 score = score - 5; 4327 penalizedDueToUserTriggeredDisconnect = 3; 4328 sb.append(" p3"); 4329 } 4330 } 4331 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4332 currentConfiguration.numTicksAtLowRSSI, 4333 currentConfiguration.numTicksAtNotHighRSSI)); 4334 } 4335 4336 if (PDBG) { 4337 String rssiStatus = ""; 4338 if (isBadRSSI) rssiStatus += " badRSSI "; 4339 else if (isHighRSSI) rssiStatus += " highRSSI "; 4340 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4341 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4342 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4343 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4344 + " score=" + Integer.toString(mWifiInfo.score) 4345 + rssiStatus 4346 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4347 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4348 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4349 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4350 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4351 } 4352 4353 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4354 && (isBadRSSI || isLowRSSI)) { 4355 // Link is stuck 4356 if (mWifiInfo.linkStuckCount < 5) 4357 mWifiInfo.linkStuckCount += 1; 4358 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4359 if (PDBG) logd(" bad link -> stuck count =" 4360 + Integer.toString(mWifiInfo.linkStuckCount)); 4361 } else if (mWifiInfo.txBadRate < 0.3) { 4362 if (mWifiInfo.linkStuckCount > 0) 4363 mWifiInfo.linkStuckCount -= 1; 4364 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4365 if (PDBG) logd(" good link -> stuck count =" 4366 + Integer.toString(mWifiInfo.linkStuckCount)); 4367 } 4368 4369 sb.append(String.format(" [%d", score)); 4370 4371 if (mWifiInfo.linkStuckCount > 1) { 4372 // Once link gets stuck for more than 3 seconds, start reducing the score 4373 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4374 } 4375 sb.append(String.format(",%d", score)); 4376 4377 if (isBadLinkspeed) { 4378 score -= 4; 4379 if (PDBG) { 4380 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4381 + " score=" + Integer.toString(score)); 4382 } 4383 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4384 score += 4; // So as bad rssi alone dont kill us 4385 } 4386 sb.append(String.format(",%d", score)); 4387 4388 if (isBadRSSI) { 4389 if (mWifiInfo.badRssiCount < 7) 4390 mWifiInfo.badRssiCount += 1; 4391 } else if (isLowRSSI) { 4392 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4393 if (mWifiInfo.badRssiCount > 0) { 4394 // Decrement bad Rssi count 4395 mWifiInfo.badRssiCount -= 1; 4396 } 4397 } else { 4398 mWifiInfo.badRssiCount = 0; 4399 mWifiInfo.lowRssiCount = 0; 4400 } 4401 4402 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4403 sb.append(String.format(",%d", score)); 4404 4405 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4406 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4407 + " --> score " + Integer.toString(score)); 4408 4409 4410 if (isHighRSSI) { 4411 score += 5; 4412 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4413 } 4414 sb.append(String.format(",%d]", score)); 4415 4416 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4417 4418 //sanitize boundaries 4419 if (score > NetworkAgent.WIFI_BASE_SCORE) 4420 score = NetworkAgent.WIFI_BASE_SCORE; 4421 if (score < 0) 4422 score = 0; 4423 4424 //report score 4425 if (score != mWifiInfo.score) { 4426 if (DBG) { 4427 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4428 } 4429 mWifiInfo.score = score; 4430 if (mNetworkAgent != null) { 4431 mNetworkAgent.sendNetworkScore(score); 4432 } 4433 } 4434 wifiScoringReport = sb.toString(); 4435 } 4436 4437 public double getTxPacketRate() { 4438 if (mWifiInfo != null) { 4439 return mWifiInfo.txSuccessRate; 4440 } 4441 return -1; 4442 } 4443 4444 public double getRxPacketRate() { 4445 if (mWifiInfo != null) { 4446 return mWifiInfo.rxSuccessRate; 4447 } 4448 return -1; 4449 } 4450 4451 /** 4452 * Fetch TX packet counters on current connection 4453 */ 4454 private void fetchPktcntNative(RssiPacketCountInfo info) { 4455 String pktcntPoll = mWifiNative.pktcntPoll(); 4456 4457 if (pktcntPoll != null) { 4458 String[] lines = pktcntPoll.split("\n"); 4459 for (String line : lines) { 4460 String[] prop = line.split("="); 4461 if (prop.length < 2) continue; 4462 try { 4463 if (prop[0].equals("TXGOOD")) { 4464 info.txgood = Integer.parseInt(prop[1]); 4465 } else if (prop[0].equals("TXBAD")) { 4466 info.txbad = Integer.parseInt(prop[1]); 4467 } 4468 } catch (NumberFormatException e) { 4469 // Ignore 4470 } 4471 } 4472 } 4473 } 4474 4475 private boolean clearIPv4Address(String iface) { 4476 try { 4477 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4478 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4479 mNwService.setInterfaceConfig(iface, ifcg); 4480 return true; 4481 } catch (RemoteException e) { 4482 return false; 4483 } 4484 } 4485 4486 private boolean isProvisioned(LinkProperties lp) { 4487 return lp.isProvisioned() || 4488 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4489 } 4490 4491 /** 4492 * Creates a new LinkProperties object by merging information from various sources. 4493 * <p/> 4494 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4495 * netlink, static configuration, ...). When one of these sources of information has updated 4496 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4497 * information that came from other sources. Instead, when one of those sources has new 4498 * information, we update the object that tracks the information from that source and then 4499 * call this method to integrate the change into a new LinkProperties object for subsequent 4500 * comparison with mLinkProperties. 4501 * <p/> 4502 * The information used to build LinkProperties is currently obtained as follows: 4503 * - Interface name: set in the constructor. 4504 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4505 * - IPv4 routes, DNS servers, and domains: DHCP. 4506 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4507 * - HTTP proxy: the wifi config store. 4508 */ 4509 private LinkProperties makeLinkProperties() { 4510 LinkProperties newLp = new LinkProperties(); 4511 4512 // Interface name, proxy, and TCP buffer sizes are locally configured. 4513 newLp.setInterfaceName(mInterfaceName); 4514 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4515 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4516 newLp.setTcpBufferSizes(mTcpBufferSizes); 4517 } 4518 4519 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4520 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4521 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4522 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4523 newLp.addRoute(route); 4524 } 4525 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4526 // Only add likely reachable DNS servers. 4527 // TODO: investigate deleting this. 4528 if (newLp.isReachable(dns)) { 4529 newLp.addDnsServer(dns); 4530 } 4531 } 4532 4533 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4534 synchronized (mDhcpResultsLock) { 4535 // Even when we're using static configuration, we don't need to look at the config 4536 // store, because static IP configuration also populates mDhcpResults. 4537 if ((mDhcpResults != null)) { 4538 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4539 newLp.addRoute(route); 4540 } 4541 for (InetAddress dns : mDhcpResults.dnsServers) { 4542 // Only add likely reachable DNS servers. 4543 // TODO: investigate deleting this. 4544 if (newLp.isReachable(dns)) { 4545 newLp.addDnsServer(dns); 4546 } 4547 } 4548 newLp.setDomains(mDhcpResults.domains); 4549 } 4550 } 4551 4552 return newLp; 4553 } 4554 4555 private void updateLinkProperties(int reason) { 4556 LinkProperties newLp = makeLinkProperties(); 4557 4558 final boolean linkChanged = !newLp.equals(mLinkProperties); 4559 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4560 final boolean isProvisioned = isProvisioned(newLp); 4561 // TODO: Teach LinkProperties how to understand static assignment 4562 // and simplify all this provisioning change detection logic by 4563 // unifying it under LinkProperties.compareProvisioning(). 4564 final boolean lostProvisioning = 4565 (wasProvisioned && !isProvisioned) || 4566 (mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address()) || 4567 (mLinkProperties.isIPv6Provisioned() && !newLp.isIPv6Provisioned()); 4568 final DetailedState detailedState = getNetworkDetailedState(); 4569 4570 if (linkChanged) { 4571 if (DBG) { 4572 log("Link configuration changed for netId: " + mLastNetworkId 4573 + " old: " + mLinkProperties + " new: " + newLp); 4574 } 4575 mLinkProperties = newLp; 4576 if (mIpReachabilityMonitor != null) { 4577 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4578 } 4579 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4580 } 4581 4582 if (lostProvisioning) { 4583 log("Lost IP layer provisioning!" + 4584 " was: " + mLinkProperties + 4585 " now: " + newLp); 4586 } 4587 4588 if (DBG) { 4589 StringBuilder sb = new StringBuilder(); 4590 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4591 sb.append(" state: " + detailedState); 4592 sb.append(" reason: " + smToString(reason)); 4593 4594 if (mLinkProperties != null) { 4595 if (mLinkProperties.hasIPv4Address()) { 4596 sb.append(" v4"); 4597 } 4598 if (mLinkProperties.hasGlobalIPv6Address()) { 4599 sb.append(" v6"); 4600 } 4601 if (mLinkProperties.hasIPv4DefaultRoute()) { 4602 sb.append(" v4r"); 4603 } 4604 if (mLinkProperties.hasIPv6DefaultRoute()) { 4605 sb.append(" v6r"); 4606 } 4607 if (mLinkProperties.hasIPv4DnsServer()) { 4608 sb.append(" v4dns"); 4609 } 4610 if (mLinkProperties.hasIPv6DnsServer()) { 4611 sb.append(" v6dns"); 4612 } 4613 if (isProvisioned) { 4614 sb.append(" isprov"); 4615 } 4616 } 4617 logd(sb.toString()); 4618 } 4619 4620 // If we just configured or lost IP configuration, do the needful. 4621 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4622 // here because those should only be called if we're attempting to connect or already 4623 // connected, whereas updateLinkProperties can be called at any time. 4624 switch (reason) { 4625 case DhcpStateMachine.DHCP_SUCCESS: 4626 case CMD_STATIC_IP_SUCCESS: 4627 // IPv4 provisioning succeded. Advance to connected state. 4628 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4629 if (!isProvisioned) { 4630 // Can never happen unless DHCP reports success but isProvisioned thinks the 4631 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4632 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4633 // TODO: disconnect here instead. If our configuration is not usable, there's no 4634 // point in staying connected, and if mLinkProperties is out of sync with 4635 // reality, that will cause problems in the future. 4636 logd("IPv4 config succeeded, but not provisioned"); 4637 } 4638 break; 4639 4640 case DhcpStateMachine.DHCP_FAILURE: 4641 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4642 // give up and disconnect. 4643 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4644 if (!isProvisioned || lostProvisioning) { 4645 sendMessage(CMD_IP_CONFIGURATION_LOST); 4646 } else { 4647 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4648 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4649 4650 // To be sure we don't get stuck with a non-working network if all we had is 4651 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4652 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4653 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4654 // necessary for provisioning, its deletion will cause us to disconnect. 4655 // 4656 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4657 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4658 // not return true if we're using DHCP and don't have an IPv4 default route. So 4659 // for now it's only here for extra redundancy. However, it will increase 4660 // robustness if we move to getting IPv4 routes from netlink as well. 4661 loge("DHCP failure: provisioned, clearing IPv4 address."); 4662 if (!clearIPv4Address(mInterfaceName)) { 4663 sendMessage(CMD_IP_CONFIGURATION_LOST); 4664 } 4665 } 4666 break; 4667 4668 case CMD_STATIC_IP_FAILURE: 4669 // Static configuration was invalid, or an error occurred in applying it. Give up. 4670 sendMessage(CMD_IP_CONFIGURATION_LOST); 4671 break; 4672 4673 case CMD_UPDATE_LINKPROPERTIES: 4674 // IP addresses, DNS servers, etc. changed. Act accordingly. 4675 if (lostProvisioning) { 4676 // We no longer have a usable network configuration. Disconnect. 4677 sendMessage(CMD_IP_CONFIGURATION_LOST); 4678 } else if (!wasProvisioned && isProvisioned) { 4679 // We have a usable IPv6-only config. Advance to connected state. 4680 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4681 } 4682 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4683 // If anything has changed and we're already connected, send out a notification. 4684 sendLinkConfigurationChangedBroadcast(); 4685 } 4686 break; 4687 } 4688 } 4689 4690 /** 4691 * Clears all our link properties. 4692 */ 4693 private void clearLinkProperties() { 4694 // Clear the link properties obtained from DHCP and netlink. 4695 synchronized (mDhcpResultsLock) { 4696 if (mDhcpResults != null) { 4697 mDhcpResults.clear(); 4698 } 4699 } 4700 mNetlinkTracker.clearLinkProperties(); 4701 if (mIpReachabilityMonitor != null) { 4702 mIpReachabilityMonitor.clearLinkProperties(); 4703 } 4704 4705 // Now clear the merged link properties. 4706 mLinkProperties.clear(); 4707 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4708 } 4709 4710 /** 4711 * try to update default route MAC address. 4712 */ 4713 private String updateDefaultRouteMacAddress(int timeout) { 4714 String address = null; 4715 for (RouteInfo route : mLinkProperties.getRoutes()) { 4716 if (route.isDefaultRoute() && route.hasGateway()) { 4717 InetAddress gateway = route.getGateway(); 4718 if (gateway instanceof Inet4Address) { 4719 if (PDBG) { 4720 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4721 + gateway.getHostAddress()); 4722 } 4723 address = macAddressFromRoute(gateway.getHostAddress()); 4724 /* The gateway's MAC address is known */ 4725 if ((address == null) && (timeout > 0)) { 4726 boolean reachable = false; 4727 try { 4728 reachable = gateway.isReachable(timeout); 4729 } catch (Exception e) { 4730 loge("updateDefaultRouteMacAddress exception reaching :" 4731 + gateway.getHostAddress()); 4732 4733 } finally { 4734 if (reachable == true) { 4735 4736 address = macAddressFromRoute(gateway.getHostAddress()); 4737 if (PDBG) { 4738 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4739 + gateway.getHostAddress() + " found " + address); 4740 } 4741 } 4742 } 4743 } 4744 if (address != null) { 4745 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4746 } 4747 } 4748 } 4749 } 4750 return address; 4751 } 4752 4753 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4754 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4755 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4756 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4757 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4758 } 4759 4760 private void sendRssiChangeBroadcast(final int newRssi) { 4761 try { 4762 mBatteryStats.noteWifiRssiChanged(newRssi); 4763 } catch (RemoteException e) { 4764 // Won't happen. 4765 } 4766 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4767 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4768 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4769 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4770 } 4771 4772 private void sendNetworkStateChangeBroadcast(String bssid) { 4773 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4774 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4775 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4776 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4777 if (bssid != null) 4778 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4779 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4780 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4781 // We no longer report MAC address to third-parties and our code does 4782 // not rely on this broadcast, so just send the default MAC address. 4783 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4784 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4785 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4786 } 4787 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4788 } 4789 4790 private WifiInfo getWiFiInfoForUid(int uid) { 4791 if (Binder.getCallingUid() == Process.myUid()) { 4792 return mWifiInfo; 4793 } 4794 4795 WifiInfo result = new WifiInfo(mWifiInfo); 4796 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4797 4798 IBinder binder = ServiceManager.getService("package"); 4799 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4800 4801 try { 4802 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4803 uid) == PackageManager.PERMISSION_GRANTED) { 4804 result.setMacAddress(mWifiInfo.getMacAddress()); 4805 } 4806 } catch (RemoteException e) { 4807 Log.e(TAG, "Error checking receiver permission", e); 4808 } 4809 4810 return result; 4811 } 4812 4813 private void sendLinkConfigurationChangedBroadcast() { 4814 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4815 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4816 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4817 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4818 } 4819 4820 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4821 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4822 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4823 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4824 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4825 } 4826 4827 /** 4828 * Record the detailed state of a network. 4829 * 4830 * @param state the new {@code DetailedState} 4831 */ 4832 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4833 boolean hidden = false; 4834 4835 if (linkDebouncing || isRoaming()) { 4836 // There is generally a confusion in the system about colluding 4837 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4838 // which leads to multiple confusion. 4839 // 4840 // If link is de-bouncing or roaming, we already have an IP address 4841 // as well we were connected and are doing L2 cycles of 4842 // reconnecting or renewing IP address to check that we still have it 4843 // This L2 link flapping should ne be reflected into the Network state 4844 // which is the state of the WiFi Network visible to Layer 3 and applications 4845 // Note that once debouncing and roaming are completed, we will 4846 // set the Network state to where it should be, or leave it as unchanged 4847 // 4848 hidden = true; 4849 } 4850 if (DBG) { 4851 log("setDetailed state, old =" 4852 + mNetworkInfo.getDetailedState() + " and new state=" + state 4853 + " hidden=" + hidden); 4854 } 4855 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4856 // Always indicate that SSID has changed 4857 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4858 if (DBG) { 4859 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4860 } 4861 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4862 sendNetworkStateChangeBroadcast(null); 4863 } 4864 } 4865 if (hidden == true) { 4866 return false; 4867 } 4868 4869 if (state != mNetworkInfo.getDetailedState()) { 4870 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4871 if (mNetworkAgent != null) { 4872 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4873 } 4874 sendNetworkStateChangeBroadcast(null); 4875 return true; 4876 } 4877 return false; 4878 } 4879 4880 private DetailedState getNetworkDetailedState() { 4881 return mNetworkInfo.getDetailedState(); 4882 } 4883 4884 private SupplicantState handleSupplicantStateChange(Message message) { 4885 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4886 SupplicantState state = stateChangeResult.state; 4887 // Supplicant state change 4888 // [31-13] Reserved for future use 4889 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4890 // 50023 supplicant_state_changed (custom|1|5) 4891 mWifiInfo.setSupplicantState(state); 4892 // Network id is only valid when we start connecting 4893 if (SupplicantState.isConnecting(state)) { 4894 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4895 } else { 4896 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4897 } 4898 4899 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4900 4901 if (mWhiteListedSsids != null 4902 && mWhiteListedSsids.length > 0 4903 && stateChangeResult.wifiSsid != null) { 4904 String SSID = stateChangeResult.wifiSsid.toString(); 4905 String currentSSID = mWifiInfo.getSSID(); 4906 if (SSID != null 4907 && currentSSID != null 4908 && !SSID.equals(WifiSsid.NONE)) { 4909 // Remove quote before comparing 4910 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4911 && SSID.charAt(SSID.length() - 1) == '"') 4912 { 4913 SSID = SSID.substring(1, SSID.length() - 1); 4914 } 4915 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4916 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4917 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4918 } 4919 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4920 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4921 targetWificonfiguration 4922 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4923 transitionTo(mRoamingState); 4924 } 4925 } 4926 } 4927 4928 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4929 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4930 4931 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4932 4933 return state; 4934 } 4935 4936 /** 4937 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4938 * using the interface, stopping DHCP & disabling interface 4939 */ 4940 private void handleNetworkDisconnect() { 4941 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4942 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4943 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4944 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4945 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4946 4947 4948 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4949 4950 stopDhcp(); 4951 4952 try { 4953 mNwService.clearInterfaceAddresses(mInterfaceName); 4954 mNwService.disableIpv6(mInterfaceName); 4955 } catch (Exception e) { 4956 loge("Failed to clear addresses or disable ipv6" + e); 4957 } 4958 4959 /* Reset data structures */ 4960 mBadLinkspeedcount = 0; 4961 mWifiInfo.reset(); 4962 linkDebouncing = false; 4963 /* Reset roaming parameters */ 4964 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4965 4966 /** 4967 * fullBandConnectedTimeIntervalMilli: 4968 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4969 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4970 * Initialize to sane value = 20 seconds 4971 */ 4972 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4973 4974 setNetworkDetailedState(DetailedState.DISCONNECTED); 4975 if (mNetworkAgent != null) { 4976 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4977 mNetworkAgent = null; 4978 } 4979 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4980 4981 /* Clear network properties */ 4982 clearLinkProperties(); 4983 4984 /* Cend event to CM & network change broadcast */ 4985 sendNetworkStateChangeBroadcast(mLastBssid); 4986 4987 /* Cancel auto roam requests */ 4988 autoRoamSetBSSID(mLastNetworkId, "any"); 4989 4990 mLastBssid = null; 4991 registerDisconnected(); 4992 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4993 } 4994 4995 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4996 /* Socket connection can be lost when we do a graceful shutdown 4997 * or when the driver is hung. Ensure supplicant is stopped here. 4998 */ 4999 if (killSupplicant) { 5000 mWifiMonitor.killSupplicant(mP2pSupported); 5001 } 5002 mWifiNative.closeSupplicantConnection(); 5003 sendSupplicantConnectionChangedBroadcast(false); 5004 setWifiState(WIFI_STATE_DISABLED); 5005 } 5006 5007 void handlePreDhcpSetup() { 5008 mDhcpActive = true; 5009 if (!mBluetoothConnectionActive) { 5010 /* 5011 * There are problems setting the Wi-Fi driver's power 5012 * mode to active when bluetooth coexistence mode is 5013 * enabled or sense. 5014 * <p> 5015 * We set Wi-Fi to active mode when 5016 * obtaining an IP address because we've found 5017 * compatibility issues with some routers with low power 5018 * mode. 5019 * <p> 5020 * In order for this active power mode to properly be set, 5021 * we disable coexistence mode until we're done with 5022 * obtaining an IP address. One exception is if we 5023 * are currently connected to a headset, since disabling 5024 * coexistence would interrupt that connection. 5025 */ 5026 // Disable the coexistence mode 5027 mWifiNative.setBluetoothCoexistenceMode( 5028 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 5029 } 5030 5031 // Disable power save and suspend optimizations during DHCP 5032 // Note: The order here is important for now. Brcm driver changes 5033 // power settings when we control suspend mode optimizations. 5034 // TODO: Remove this comment when the driver is fixed. 5035 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 5036 mWifiNative.setPowerSave(false); 5037 5038 // Update link layer stats 5039 getWifiLinkLayerStats(false); 5040 5041 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 5042 Message msg = new Message(); 5043 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 5044 msg.arg1 = WifiP2pServiceImpl.ENABLED; 5045 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 5046 msg.obj = mDhcpStateMachine; 5047 mWifiP2pChannel.sendMessage(msg); 5048 } 5049 5050 5051 private boolean useLegacyDhcpClient() { 5052 return Settings.Global.getInt( 5053 mContext.getContentResolver(), 5054 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 5055 } 5056 5057 private void maybeInitDhcpStateMachine() { 5058 if (mDhcpStateMachine == null) { 5059 if (useLegacyDhcpClient()) { 5060 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 5061 mContext, WifiStateMachine.this, mInterfaceName); 5062 } else { 5063 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 5064 mContext, WifiStateMachine.this, mInterfaceName); 5065 } 5066 } 5067 } 5068 5069 void startDhcp() { 5070 maybeInitDhcpStateMachine(); 5071 mDhcpStateMachine.registerForPreDhcpNotification(); 5072 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 5073 } 5074 5075 void renewDhcp() { 5076 maybeInitDhcpStateMachine(); 5077 mDhcpStateMachine.registerForPreDhcpNotification(); 5078 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 5079 } 5080 5081 void stopDhcp() { 5082 if (mDhcpStateMachine != null) { 5083 /* In case we were in middle of DHCP operation restore back powermode */ 5084 handlePostDhcpSetup(); 5085 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 5086 } 5087 } 5088 5089 void handlePostDhcpSetup() { 5090 /* Restore power save and suspend optimizations */ 5091 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 5092 mWifiNative.setPowerSave(true); 5093 5094 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 5095 5096 // Set the coexistence mode back to its default value 5097 mWifiNative.setBluetoothCoexistenceMode( 5098 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 5099 5100 mDhcpActive = false; 5101 } 5102 5103 void connectScanningService() { 5104 5105 if (mWifiScanner == null) { 5106 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 5107 } 5108 } 5109 5110 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 5111 5112 if (PDBG) { 5113 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 5114 logd("link address " + dhcpResults.ipAddress); 5115 } 5116 5117 Inet4Address addr; 5118 synchronized (mDhcpResultsLock) { 5119 mDhcpResults = dhcpResults; 5120 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5121 } 5122 5123 if (isRoaming()) { 5124 int previousAddress = mWifiInfo.getIpAddress(); 5125 int newAddress = NetworkUtils.inetAddressToInt(addr); 5126 if (previousAddress != newAddress) { 5127 logd("handleIPv4Success, roaming and address changed" + 5128 mWifiInfo + " got: " + addr); 5129 } 5130 } 5131 mWifiInfo.setInetAddress(addr); 5132 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5133 updateLinkProperties(reason); 5134 } 5135 5136 private void handleSuccessfulIpConfiguration() { 5137 mLastSignalLevel = -1; // Force update of signal strength 5138 WifiConfiguration c = getCurrentWifiConfiguration(); 5139 if (c != null) { 5140 // Reset IP failure tracking 5141 c.numConnectionFailures = 0; 5142 5143 // Tell the framework whether the newly connected network is trusted or untrusted. 5144 updateCapabilities(c); 5145 } 5146 if (c != null) { 5147 ScanResult result = getCurrentScanResult(); 5148 if (result == null) { 5149 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5150 c.configKey()); 5151 } else { 5152 // Clear the per BSSID failure count 5153 result.numIpConfigFailures = 0; 5154 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5155 // any BSSID, even though it may already have a non zero ip failure count, 5156 // this will typically happen if the user walks away and come back to his arrea 5157 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5158 // in supplicant for a couple of hours or a day 5159 mWifiConfigStore.clearBssidBlacklist(); 5160 } 5161 } 5162 } 5163 5164 private void handleIPv4Failure(int reason) { 5165 synchronized(mDhcpResultsLock) { 5166 if (mDhcpResults != null) { 5167 mDhcpResults.clear(); 5168 } 5169 } 5170 if (PDBG) { 5171 logd("handleIPv4Failure"); 5172 } 5173 updateLinkProperties(reason); 5174 } 5175 5176 private void handleIpConfigurationLost() { 5177 mWifiInfo.setInetAddress(null); 5178 mWifiInfo.setMeteredHint(false); 5179 5180 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5181 "DHCP FAILURE", mWifiInfo.getBSSID()); 5182 5183 /* DHCP times out after about 30 seconds, we do a 5184 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5185 */ 5186 mWifiNative.disconnect(); 5187 } 5188 5189 // TODO: De-duplicated this and handleIpConfigurationLost(). 5190 private void handleIpReachabilityLost() { 5191 // No need to be told about any additional neighbors that might also 5192 // become unreachable--quiet them now while we start disconnecting. 5193 if (mIpReachabilityMonitor != null) { 5194 mIpReachabilityMonitor.clearLinkProperties(); 5195 } 5196 5197 mWifiInfo.setInetAddress(null); 5198 mWifiInfo.setMeteredHint(false); 5199 5200 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5201 5202 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5203 mWifiNative.disconnect(); 5204 } 5205 5206 private int convertFrequencyToChannelNumber(int frequency) { 5207 if (frequency >= 2412 && frequency <= 2484) { 5208 return (frequency -2412) / 5 + 1; 5209 } else if (frequency >= 5170 && frequency <=5825) { 5210 //DFS is included 5211 return (frequency -5170) / 5 + 34; 5212 } else { 5213 return 0; 5214 } 5215 } 5216 5217 private int chooseApChannel(int apBand) { 5218 int apChannel; 5219 int[] channel; 5220 5221 if (apBand == 0) { 5222 if (mWifiApConfigStore.allowed2GChannel == null || 5223 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5224 //most safe channel to use 5225 if(DBG) { 5226 Log.d(TAG, "No specified 2G allowed channel list"); 5227 } 5228 apChannel = 6; 5229 } else { 5230 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5231 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5232 } 5233 } else { 5234 //5G without DFS 5235 channel = mWifiNative.getChannelsForBand(2); 5236 if (channel != null && channel.length > 0) { 5237 apChannel = channel[mRandom.nextInt(channel.length)]; 5238 apChannel = convertFrequencyToChannelNumber(apChannel); 5239 } else { 5240 Log.e(TAG, "SoftAp do not get available channel list"); 5241 apChannel = 0; 5242 } 5243 } 5244 5245 if(DBG) { 5246 Log.d(TAG, "SoftAp set on channel " + apChannel); 5247 } 5248 5249 return apChannel; 5250 } 5251 5252 /* SoftAP configuration */ 5253 private boolean enableSoftAp() { 5254 if (WifiNative.getInterfaces() != 0) { 5255 if (!mWifiNative.toggleInterface(0)) { 5256 if (DBG) Log.e(TAG, "toggleInterface failed"); 5257 return false; 5258 } 5259 } else { 5260 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5261 } 5262 5263 try { 5264 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5265 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5266 } catch (Exception e) { 5267 Log.e(TAG, "Failed to reload AP firmware " + e); 5268 } 5269 5270 if (WifiNative.startHal() == false) { 5271 /* starting HAL is optional */ 5272 Log.e(TAG, "Failed to start HAL"); 5273 } 5274 return true; 5275 } 5276 5277 /* Current design is to not set the config on a running hostapd but instead 5278 * stop and start tethering when user changes config on a running access point 5279 * 5280 * TODO: Add control channel setup through hostapd that allows changing config 5281 * on a running daemon 5282 */ 5283 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5284 // set channel 5285 final WifiConfiguration config = new WifiConfiguration(configuration); 5286 5287 if (DBG) { 5288 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5289 } 5290 5291 //We need HAL support to set country code and get available channel list, if HAL is 5292 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5293 if (mWifiNative.isHalStarted()) { 5294 //set country code through HAL Here 5295 if (mSetCountryCode != null) { 5296 if (!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 5297 if (config.apBand != 0) { 5298 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5299 //countrycode is mandatory for 5GHz 5300 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5301 return; 5302 } 5303 } 5304 } else { 5305 if (config.apBand != 0) { 5306 //countrycode is mandatory for 5GHz 5307 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5308 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5309 return; 5310 } 5311 } 5312 5313 if (config.apChannel == 0) { 5314 config.apChannel = chooseApChannel(config.apBand); 5315 if (config.apChannel == 0) { 5316 if(mWifiNative.isGetChannelsForBandSupported()) { 5317 //fail to get available channel 5318 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5319 return; 5320 } else { 5321 //for some old device, wifiHal may not be supportedget valid channels are not 5322 //supported 5323 config.apBand = 0; 5324 config.apChannel = 6; 5325 } 5326 } 5327 } 5328 } else { 5329 //for some old device, wifiHal may not be supported 5330 config.apBand = 0; 5331 config.apChannel = 6; 5332 } 5333 // Start hostapd on a separate thread 5334 new Thread(new Runnable() { 5335 public void run() { 5336 try { 5337 mNwService.startAccessPoint(config, mInterfaceName); 5338 } catch (Exception e) { 5339 loge("Exception in softap start " + e); 5340 try { 5341 mNwService.stopAccessPoint(mInterfaceName); 5342 mNwService.startAccessPoint(config, mInterfaceName); 5343 } catch (Exception e1) { 5344 loge("Exception in softap re-start " + e1); 5345 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5346 return; 5347 } 5348 } 5349 if (DBG) log("Soft AP start successful"); 5350 sendMessage(CMD_START_AP_SUCCESS); 5351 } 5352 }).start(); 5353 } 5354 5355 private byte[] macAddressFromString(String macString) { 5356 String[] macBytes = macString.split(":"); 5357 if (macBytes.length != 6) { 5358 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5359 } 5360 byte[] mac = new byte[6]; 5361 for (int i = 0; i < macBytes.length; i++) { 5362 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5363 mac[i] = hexVal.byteValue(); 5364 } 5365 return mac; 5366 } 5367 5368 /* 5369 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5370 * so as to record MAC address of default gateway. 5371 **/ 5372 private String macAddressFromRoute(String ipAddress) { 5373 String macAddress = null; 5374 BufferedReader reader = null; 5375 try { 5376 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5377 5378 // Skip over the line bearing colum titles 5379 String line = reader.readLine(); 5380 5381 while ((line = reader.readLine()) != null) { 5382 String[] tokens = line.split("[ ]+"); 5383 if (tokens.length < 6) { 5384 continue; 5385 } 5386 5387 // ARP column format is 5388 // Address HWType HWAddress Flags Mask IFace 5389 String ip = tokens[0]; 5390 String mac = tokens[3]; 5391 5392 if (ipAddress.equals(ip)) { 5393 macAddress = mac; 5394 break; 5395 } 5396 } 5397 5398 if (macAddress == null) { 5399 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5400 "/proc/net/arp"); 5401 } 5402 5403 } catch (FileNotFoundException e) { 5404 loge("Could not open /proc/net/arp to lookup mac address"); 5405 } catch (IOException e) { 5406 loge("Could not read /proc/net/arp to lookup mac address"); 5407 } finally { 5408 try { 5409 if (reader != null) { 5410 reader.close(); 5411 } 5412 } catch (IOException e) { 5413 // Do nothing 5414 } 5415 } 5416 return macAddress; 5417 5418 } 5419 5420 private class WifiNetworkFactory extends NetworkFactory { 5421 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5422 super(l, c, TAG, f); 5423 } 5424 5425 @Override 5426 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5427 ++mConnectionRequests; 5428 } 5429 5430 @Override 5431 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5432 --mConnectionRequests; 5433 } 5434 5435 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5436 pw.println("mConnectionRequests " + mConnectionRequests); 5437 } 5438 5439 } 5440 5441 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5442 private int mUntrustedReqCount; 5443 5444 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5445 super(l, c, tag, f); 5446 } 5447 5448 @Override 5449 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5450 if (!networkRequest.networkCapabilities.hasCapability( 5451 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5452 if (++mUntrustedReqCount == 1) { 5453 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5454 } 5455 } 5456 } 5457 5458 @Override 5459 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5460 if (!networkRequest.networkCapabilities.hasCapability( 5461 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5462 if (--mUntrustedReqCount == 0) { 5463 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5464 } 5465 } 5466 } 5467 5468 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5469 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5470 } 5471 } 5472 5473 void maybeRegisterNetworkFactory() { 5474 if (mNetworkFactory == null) { 5475 checkAndSetConnectivityInstance(); 5476 if (mCm != null) { 5477 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5478 NETWORKTYPE, mNetworkCapabilitiesFilter); 5479 mNetworkFactory.setScoreFilter(60); 5480 mNetworkFactory.register(); 5481 5482 // We can't filter untrusted network in the capabilities filter because a trusted 5483 // network would still satisfy a request that accepts untrusted ones. 5484 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5485 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5486 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5487 mUntrustedNetworkFactory.register(); 5488 } 5489 } 5490 } 5491 5492 /******************************************************** 5493 * HSM states 5494 *******************************************************/ 5495 5496 class DefaultState extends State { 5497 @Override 5498 public boolean processMessage(Message message) { 5499 logStateAndMessage(message, getClass().getSimpleName()); 5500 5501 switch (message.what) { 5502 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5503 AsyncChannel ac = (AsyncChannel) message.obj; 5504 if (ac == mWifiP2pChannel) { 5505 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5506 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5507 } else { 5508 loge("WifiP2pService connection failure, error=" + message.arg1); 5509 } 5510 } else { 5511 loge("got HALF_CONNECTED for unknown channel"); 5512 } 5513 break; 5514 } 5515 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5516 AsyncChannel ac = (AsyncChannel) message.obj; 5517 if (ac == mWifiP2pChannel) { 5518 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5519 //TODO: Re-establish connection to state machine after a delay 5520 // mWifiP2pChannel.connect(mContext, getHandler(), 5521 // mWifiP2pManager.getMessenger()); 5522 } 5523 break; 5524 } 5525 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5526 mBluetoothConnectionActive = (message.arg1 != 5527 BluetoothAdapter.STATE_DISCONNECTED); 5528 break; 5529 /* Synchronous call returns */ 5530 case CMD_PING_SUPPLICANT: 5531 case CMD_ENABLE_NETWORK: 5532 case CMD_ADD_OR_UPDATE_NETWORK: 5533 case CMD_REMOVE_NETWORK: 5534 case CMD_SAVE_CONFIG: 5535 replyToMessage(message, message.what, FAILURE); 5536 break; 5537 case CMD_GET_CAPABILITY_FREQ: 5538 replyToMessage(message, message.what, null); 5539 break; 5540 case CMD_GET_CONFIGURED_NETWORKS: 5541 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5542 break; 5543 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5544 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5545 break; 5546 case CMD_ENABLE_RSSI_POLL: 5547 mEnableRssiPolling = (message.arg1 == 1); 5548 break; 5549 case CMD_SET_HIGH_PERF_MODE: 5550 if (message.arg1 == 1) { 5551 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5552 } else { 5553 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5554 } 5555 break; 5556 case CMD_BOOT_COMPLETED: 5557 maybeRegisterNetworkFactory(); 5558 break; 5559 case CMD_SCREEN_STATE_CHANGED: 5560 handleScreenStateChanged(message.arg1 != 0); 5561 break; 5562 /* Discard */ 5563 case CMD_START_SCAN: 5564 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5565 break; 5566 case CMD_START_SUPPLICANT: 5567 case CMD_STOP_SUPPLICANT: 5568 case CMD_STOP_SUPPLICANT_FAILED: 5569 case CMD_START_DRIVER: 5570 case CMD_STOP_DRIVER: 5571 case CMD_DELAYED_STOP_DRIVER: 5572 case CMD_DRIVER_START_TIMED_OUT: 5573 case CMD_START_AP: 5574 case CMD_START_AP_SUCCESS: 5575 case CMD_START_AP_FAILURE: 5576 case CMD_STOP_AP: 5577 case CMD_TETHER_STATE_CHANGE: 5578 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5579 case CMD_DISCONNECT: 5580 case CMD_RECONNECT: 5581 case CMD_REASSOCIATE: 5582 case CMD_RELOAD_TLS_AND_RECONNECT: 5583 case WifiMonitor.SUP_CONNECTION_EVENT: 5584 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5585 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5586 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5587 case WifiMonitor.SCAN_RESULTS_EVENT: 5588 case WifiMonitor.SCAN_FAILED_EVENT: 5589 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5590 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5591 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5592 case WifiMonitor.WPS_OVERLAP_EVENT: 5593 case CMD_BLACKLIST_NETWORK: 5594 case CMD_CLEAR_BLACKLIST: 5595 case CMD_SET_OPERATIONAL_MODE: 5596 case CMD_SET_COUNTRY_CODE: 5597 case CMD_SET_FREQUENCY_BAND: 5598 case CMD_RSSI_POLL: 5599 case CMD_ENABLE_ALL_NETWORKS: 5600 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5601 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5602 /* Handled by WifiApConfigStore */ 5603 case CMD_SET_AP_CONFIG: 5604 case CMD_SET_AP_CONFIG_COMPLETED: 5605 case CMD_REQUEST_AP_CONFIG: 5606 case CMD_RESPONSE_AP_CONFIG: 5607 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5608 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5609 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5610 case CMD_DISABLE_P2P_RSP: 5611 case WifiMonitor.SUP_REQUEST_IDENTITY: 5612 case CMD_TEST_NETWORK_DISCONNECT: 5613 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5614 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5615 case CMD_TARGET_BSSID: 5616 case CMD_AUTO_CONNECT: 5617 case CMD_AUTO_ROAM: 5618 case CMD_AUTO_SAVE_NETWORK: 5619 case CMD_ASSOCIATED_BSSID: 5620 case CMD_UNWANTED_NETWORK: 5621 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5622 case CMD_ROAM_WATCHDOG_TIMER: 5623 case CMD_DISABLE_EPHEMERAL_NETWORK: 5624 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5625 case CMD_STARTED_PNO_DBG: 5626 case CMD_STARTED_GSCAN_DBG: 5627 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5628 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5629 break; 5630 case DhcpStateMachine.CMD_ON_QUIT: 5631 mDhcpStateMachine = null; 5632 break; 5633 case CMD_SET_SUSPEND_OPT_ENABLED: 5634 if (message.arg1 == 1) { 5635 mSuspendWakeLock.release(); 5636 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5637 } else { 5638 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5639 } 5640 break; 5641 case WifiMonitor.DRIVER_HUNG_EVENT: 5642 setSupplicantRunning(false); 5643 setSupplicantRunning(true); 5644 break; 5645 case WifiManager.CONNECT_NETWORK: 5646 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5647 WifiManager.BUSY); 5648 break; 5649 case WifiManager.FORGET_NETWORK: 5650 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5651 WifiManager.BUSY); 5652 break; 5653 case WifiManager.SAVE_NETWORK: 5654 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5655 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5656 WifiManager.BUSY); 5657 break; 5658 case WifiManager.START_WPS: 5659 replyToMessage(message, WifiManager.WPS_FAILED, 5660 WifiManager.BUSY); 5661 break; 5662 case WifiManager.CANCEL_WPS: 5663 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5664 WifiManager.BUSY); 5665 break; 5666 case WifiManager.DISABLE_NETWORK: 5667 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5668 WifiManager.BUSY); 5669 break; 5670 case WifiManager.RSSI_PKTCNT_FETCH: 5671 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5672 WifiManager.BUSY); 5673 break; 5674 case CMD_GET_SUPPORTED_FEATURES: 5675 int featureSet = WifiNative.getSupportedFeatureSet(); 5676 replyToMessage(message, message.what, featureSet); 5677 break; 5678 case CMD_FIRMWARE_ALERT: 5679 if (mWifiLogger != null) { 5680 byte[] buffer = (byte[])message.obj; 5681 mWifiLogger.captureAlertData(message.arg1, buffer); 5682 } 5683 break; 5684 case CMD_GET_LINK_LAYER_STATS: 5685 // Not supported hence reply with error message 5686 replyToMessage(message, message.what, null); 5687 break; 5688 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5689 NetworkInfo info = (NetworkInfo) message.obj; 5690 mP2pConnected.set(info.isConnected()); 5691 break; 5692 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5693 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5694 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5695 break; 5696 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5697 case CMD_UPDATE_LINKPROPERTIES: 5698 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5699 break; 5700 case CMD_GET_MATCHING_CONFIG: 5701 replyToMessage(message, message.what); 5702 break; 5703 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5704 case CMD_IP_CONFIGURATION_LOST: 5705 case CMD_IP_REACHABILITY_LOST: 5706 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5707 break; 5708 case CMD_GET_CONNECTION_STATISTICS: 5709 replyToMessage(message, message.what, mWifiConnectionStatistics); 5710 break; 5711 case CMD_REMOVE_APP_CONFIGURATIONS: 5712 deferMessage(message); 5713 break; 5714 case CMD_REMOVE_USER_CONFIGURATIONS: 5715 deferMessage(message); 5716 break; 5717 case CMD_START_IP_PACKET_OFFLOAD: 5718 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5719 message.arg1, 5720 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5721 break; 5722 case CMD_STOP_IP_PACKET_OFFLOAD: 5723 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5724 message.arg1, 5725 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5726 break; 5727 case CMD_START_RSSI_MONITORING_OFFLOAD: 5728 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5729 break; 5730 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5731 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5732 break; 5733 default: 5734 loge("Error! unhandled message" + message); 5735 break; 5736 } 5737 return HANDLED; 5738 } 5739 } 5740 5741 class InitialState extends State { 5742 @Override 5743 public void enter() { 5744 WifiNative.stopHal(); 5745 mWifiNative.unloadDriver(); 5746 if (mWifiP2pChannel == null) { 5747 mWifiP2pChannel = new AsyncChannel(); 5748 mWifiP2pChannel.connect(mContext, getHandler(), 5749 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5750 } 5751 5752 if (mWifiApConfigChannel == null) { 5753 mWifiApConfigChannel = new AsyncChannel(); 5754 mWifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5755 mContext, getHandler()); 5756 mWifiApConfigStore.loadApConfiguration(); 5757 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5758 mWifiApConfigStore.getMessenger()); 5759 } 5760 5761 if (mWifiConfigStore.enableHalBasedPno.get()) { 5762 // make sure developer Settings are in sync with the config option 5763 mHalBasedPnoEnableInDevSettings = true; 5764 } 5765 } 5766 @Override 5767 public boolean processMessage(Message message) { 5768 logStateAndMessage(message, getClass().getSimpleName()); 5769 switch (message.what) { 5770 case CMD_START_SUPPLICANT: 5771 if (mWifiNative.loadDriver()) { 5772 try { 5773 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5774 } catch (Exception e) { 5775 loge("Failed to reload STA firmware " + e); 5776 // Continue 5777 } 5778 5779 try { 5780 // A runtime crash can leave the interface up and 5781 // IP addresses configured, and this affects 5782 // connectivity when supplicant starts up. 5783 // Ensure interface is down and we have no IP 5784 // addresses before a supplicant start. 5785 mNwService.setInterfaceDown(mInterfaceName); 5786 mNwService.clearInterfaceAddresses(mInterfaceName); 5787 5788 // Set privacy extensions 5789 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5790 5791 // IPv6 is enabled only as long as access point is connected since: 5792 // - IPv6 addresses and routes stick around after disconnection 5793 // - kernel is unaware when connected and fails to start IPv6 negotiation 5794 // - kernel can start autoconfiguration when 802.1x is not complete 5795 mNwService.disableIpv6(mInterfaceName); 5796 } catch (RemoteException re) { 5797 loge("Unable to change interface settings: " + re); 5798 } catch (IllegalStateException ie) { 5799 loge("Unable to change interface settings: " + ie); 5800 } 5801 5802 /* Stop a running supplicant after a runtime restart 5803 * Avoids issues with drivers that do not handle interface down 5804 * on a running supplicant properly. 5805 */ 5806 mWifiMonitor.killSupplicant(mP2pSupported); 5807 5808 if (WifiNative.startHal() == false) { 5809 /* starting HAL is optional */ 5810 loge("Failed to start HAL"); 5811 } 5812 5813 if (mWifiNative.startSupplicant(mP2pSupported)) { 5814 setWifiState(WIFI_STATE_ENABLING); 5815 if (DBG) log("Supplicant start successful"); 5816 mWifiMonitor.startMonitoring(); 5817 transitionTo(mSupplicantStartingState); 5818 } else { 5819 loge("Failed to start supplicant!"); 5820 } 5821 } else { 5822 loge("Failed to load driver"); 5823 } 5824 break; 5825 case CMD_START_AP: 5826 if (mWifiNative.loadDriver() == false) { 5827 loge("Failed to load driver for softap"); 5828 } else { 5829 if (enableSoftAp() == true) { 5830 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5831 transitionTo(mSoftApStartingState); 5832 } else { 5833 setWifiApState(WIFI_AP_STATE_FAILED, 5834 WifiManager.SAP_START_FAILURE_GENERAL); 5835 transitionTo(mInitialState); 5836 } 5837 } 5838 break; 5839 default: 5840 return NOT_HANDLED; 5841 } 5842 return HANDLED; 5843 } 5844 } 5845 5846 class SupplicantStartingState extends State { 5847 private void initializeWpsDetails() { 5848 String detail; 5849 detail = SystemProperties.get("ro.product.name", ""); 5850 if (!mWifiNative.setDeviceName(detail)) { 5851 loge("Failed to set device name " + detail); 5852 } 5853 detail = SystemProperties.get("ro.product.manufacturer", ""); 5854 if (!mWifiNative.setManufacturer(detail)) { 5855 loge("Failed to set manufacturer " + detail); 5856 } 5857 detail = SystemProperties.get("ro.product.model", ""); 5858 if (!mWifiNative.setModelName(detail)) { 5859 loge("Failed to set model name " + detail); 5860 } 5861 detail = SystemProperties.get("ro.product.model", ""); 5862 if (!mWifiNative.setModelNumber(detail)) { 5863 loge("Failed to set model number " + detail); 5864 } 5865 detail = SystemProperties.get("ro.serialno", ""); 5866 if (!mWifiNative.setSerialNumber(detail)) { 5867 loge("Failed to set serial number " + detail); 5868 } 5869 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5870 loge("Failed to set WPS config methods"); 5871 } 5872 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5873 loge("Failed to set primary device type " + mPrimaryDeviceType); 5874 } 5875 } 5876 5877 @Override 5878 public boolean processMessage(Message message) { 5879 logStateAndMessage(message, getClass().getSimpleName()); 5880 5881 switch(message.what) { 5882 case WifiMonitor.SUP_CONNECTION_EVENT: 5883 if (DBG) log("Supplicant connection established"); 5884 setWifiState(WIFI_STATE_ENABLED); 5885 mSupplicantRestartCount = 0; 5886 /* Reset the supplicant state to indicate the supplicant 5887 * state is not known at this time */ 5888 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5889 /* Initialize data structures */ 5890 mLastBssid = null; 5891 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5892 mLastSignalLevel = -1; 5893 5894 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5895 /* set frequency band of operation */ 5896 setFrequencyBand(); 5897 mWifiNative.enableSaveConfig(); 5898 mWifiConfigStore.loadAndEnableAllNetworks(); 5899 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5900 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5901 } 5902 initializeWpsDetails(); 5903 5904 sendSupplicantConnectionChangedBroadcast(true); 5905 transitionTo(mDriverStartedState); 5906 break; 5907 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5908 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5909 loge("Failed to setup control channel, restart supplicant"); 5910 mWifiMonitor.killSupplicant(mP2pSupported); 5911 transitionTo(mInitialState); 5912 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5913 } else { 5914 loge("Failed " + mSupplicantRestartCount + 5915 " times to start supplicant, unload driver"); 5916 mSupplicantRestartCount = 0; 5917 setWifiState(WIFI_STATE_UNKNOWN); 5918 transitionTo(mInitialState); 5919 } 5920 break; 5921 case CMD_START_SUPPLICANT: 5922 case CMD_STOP_SUPPLICANT: 5923 case CMD_START_AP: 5924 case CMD_STOP_AP: 5925 case CMD_START_DRIVER: 5926 case CMD_STOP_DRIVER: 5927 case CMD_SET_OPERATIONAL_MODE: 5928 case CMD_SET_COUNTRY_CODE: 5929 case CMD_SET_FREQUENCY_BAND: 5930 case CMD_START_PACKET_FILTERING: 5931 case CMD_STOP_PACKET_FILTERING: 5932 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5933 deferMessage(message); 5934 break; 5935 default: 5936 return NOT_HANDLED; 5937 } 5938 return HANDLED; 5939 } 5940 } 5941 5942 class SupplicantStartedState extends State { 5943 @Override 5944 public void enter() { 5945 /* Wifi is available as long as we have a connection to supplicant */ 5946 mNetworkInfo.setIsAvailable(true); 5947 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5948 5949 int defaultInterval = mContext.getResources().getInteger( 5950 R.integer.config_wifi_supplicant_scan_interval); 5951 5952 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5953 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5954 defaultInterval); 5955 5956 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5957 mWifiNative.setExternalSim(true); 5958 5959 /* turn on use of DFS channels */ 5960 WifiNative.setDfsFlag(true); 5961 5962 /* set country code */ 5963 initializeCountryCode(); 5964 5965 setRandomMacOui(); 5966 mWifiNative.enableAutoConnect(false); 5967 } 5968 5969 @Override 5970 public boolean processMessage(Message message) { 5971 logStateAndMessage(message, getClass().getSimpleName()); 5972 5973 switch(message.what) { 5974 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5975 if (mP2pSupported) { 5976 transitionTo(mWaitForP2pDisableState); 5977 } else { 5978 transitionTo(mSupplicantStoppingState); 5979 } 5980 break; 5981 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5982 loge("Connection lost, restart supplicant"); 5983 handleSupplicantConnectionLoss(true); 5984 handleNetworkDisconnect(); 5985 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5986 if (mP2pSupported) { 5987 transitionTo(mWaitForP2pDisableState); 5988 } else { 5989 transitionTo(mInitialState); 5990 } 5991 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5992 break; 5993 case WifiMonitor.SCAN_RESULTS_EVENT: 5994 case WifiMonitor.SCAN_FAILED_EVENT: 5995 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5996 closeRadioScanStats(); 5997 noteScanEnd(); 5998 setScanResults(); 5999 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 6000 /* Just updated results from full scan, let apps know about this */ 6001 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 6002 sendScanResultsAvailableBroadcast(scanSucceeded); 6003 } 6004 mSendScanResultsBroadcast = false; 6005 mIsScanOngoing = false; 6006 mIsFullScanOngoing = false; 6007 if (mBufferedScanMsg.size() > 0) 6008 sendMessage(mBufferedScanMsg.remove()); 6009 break; 6010 case CMD_PING_SUPPLICANT: 6011 boolean ok = mWifiNative.ping(); 6012 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6013 break; 6014 case CMD_GET_CAPABILITY_FREQ: 6015 String freqs = mWifiNative.getFreqCapability(); 6016 replyToMessage(message, message.what, freqs); 6017 break; 6018 case CMD_START_AP: 6019 /* Cannot start soft AP while in client mode */ 6020 loge("Failed to start soft AP with a running supplicant"); 6021 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 6022 break; 6023 case CMD_SET_OPERATIONAL_MODE: 6024 mOperationalMode = message.arg1; 6025 mWifiConfigStore. 6026 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6027 break; 6028 case CMD_TARGET_BSSID: 6029 // Trying to associate to this BSSID 6030 if (message.obj != null) { 6031 mTargetRoamBSSID = (String) message.obj; 6032 } 6033 break; 6034 case CMD_GET_LINK_LAYER_STATS: 6035 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 6036 if (stats == null) { 6037 // When firmware doesnt support link layer stats, return an empty object 6038 stats = new WifiLinkLayerStats(); 6039 } 6040 replyToMessage(message, message.what, stats); 6041 break; 6042 case CMD_SET_COUNTRY_CODE: 6043 String country = (String) message.obj; 6044 6045 final boolean persist = (message.arg2 == 1); 6046 final int sequence = message.arg1; 6047 6048 if (sequence != mCountryCodeSequence.get()) { 6049 if (DBG) log("set country code ignored due to sequnce num"); 6050 break; 6051 } 6052 6053 if (TextUtils.isEmpty(country)) { 6054 if (mRevertCountryCodeOnCellularLoss 6055 && !TextUtils.isEmpty(mDefaultCountryCode)) { 6056 if (DBG) log("Reverting wifi country code to default of " 6057 + mDefaultCountryCode); 6058 country = mDefaultCountryCode; 6059 } 6060 } else { 6061 country = country.toUpperCase(Locale.ROOT); 6062 } 6063 6064 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 6065 6066 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 6067 if (mWifiNative.setCountryCode(country)) { 6068 mDriverSetCountryCode = country; 6069 } else { 6070 loge("Failed to set country code " + country); 6071 } 6072 if (persist) { 6073 Settings.Global.putString(mContext.getContentResolver(), 6074 Settings.Global.WIFI_COUNTRY_CODE, 6075 country == null ? "" : country); 6076 } 6077 } 6078 6079 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 6080 break; 6081 default: 6082 return NOT_HANDLED; 6083 } 6084 return HANDLED; 6085 } 6086 6087 @Override 6088 public void exit() { 6089 mNetworkInfo.setIsAvailable(false); 6090 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 6091 } 6092 } 6093 6094 class SupplicantStoppingState extends State { 6095 @Override 6096 public void enter() { 6097 /* Send any reset commands to supplicant before shutting it down */ 6098 handleNetworkDisconnect(); 6099 if (mDhcpStateMachine != null) { 6100 mDhcpStateMachine.doQuit(); 6101 } 6102 6103 String suppState = System.getProperty("init.svc.wpa_supplicant"); 6104 if (suppState == null) suppState = "unknown"; 6105 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 6106 if (p2pSuppState == null) p2pSuppState = "unknown"; 6107 6108 logd("SupplicantStoppingState: stopSupplicant " 6109 + " init.svc.wpa_supplicant=" + suppState 6110 + " init.svc.p2p_supplicant=" + p2pSuppState); 6111 mWifiMonitor.stopSupplicant(); 6112 6113 /* Send ourselves a delayed message to indicate failure after a wait time */ 6114 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 6115 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 6116 setWifiState(WIFI_STATE_DISABLING); 6117 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6118 } 6119 @Override 6120 public boolean processMessage(Message message) { 6121 logStateAndMessage(message, getClass().getSimpleName()); 6122 6123 switch(message.what) { 6124 case WifiMonitor.SUP_CONNECTION_EVENT: 6125 loge("Supplicant connection received while stopping"); 6126 break; 6127 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6128 if (DBG) log("Supplicant connection lost"); 6129 handleSupplicantConnectionLoss(false); 6130 transitionTo(mInitialState); 6131 break; 6132 case CMD_STOP_SUPPLICANT_FAILED: 6133 if (message.arg1 == mSupplicantStopFailureToken) { 6134 loge("Timed out on a supplicant stop, kill and proceed"); 6135 handleSupplicantConnectionLoss(true); 6136 transitionTo(mInitialState); 6137 } 6138 break; 6139 case CMD_START_SUPPLICANT: 6140 case CMD_STOP_SUPPLICANT: 6141 case CMD_START_AP: 6142 case CMD_STOP_AP: 6143 case CMD_START_DRIVER: 6144 case CMD_STOP_DRIVER: 6145 case CMD_SET_OPERATIONAL_MODE: 6146 case CMD_SET_COUNTRY_CODE: 6147 case CMD_SET_FREQUENCY_BAND: 6148 case CMD_START_PACKET_FILTERING: 6149 case CMD_STOP_PACKET_FILTERING: 6150 deferMessage(message); 6151 break; 6152 default: 6153 return NOT_HANDLED; 6154 } 6155 return HANDLED; 6156 } 6157 } 6158 6159 class DriverStartingState extends State { 6160 private int mTries; 6161 @Override 6162 public void enter() { 6163 mTries = 1; 6164 /* Send ourselves a delayed message to start driver a second time */ 6165 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6166 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6167 } 6168 @Override 6169 public boolean processMessage(Message message) { 6170 logStateAndMessage(message, getClass().getSimpleName()); 6171 6172 switch(message.what) { 6173 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6174 SupplicantState state = handleSupplicantStateChange(message); 6175 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6176 * a state that indicates driver has started, it is ready to 6177 * receive driver commands 6178 */ 6179 if (SupplicantState.isDriverActive(state)) { 6180 transitionTo(mDriverStartedState); 6181 } 6182 break; 6183 case CMD_DRIVER_START_TIMED_OUT: 6184 if (message.arg1 == mDriverStartToken) { 6185 if (mTries >= 2) { 6186 loge("Failed to start driver after " + mTries); 6187 transitionTo(mDriverStoppedState); 6188 } else { 6189 loge("Driver start failed, retrying"); 6190 mWakeLock.acquire(); 6191 mWifiNative.startDriver(); 6192 mWakeLock.release(); 6193 6194 ++mTries; 6195 /* Send ourselves a delayed message to start driver again */ 6196 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6197 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6198 } 6199 } 6200 break; 6201 /* Queue driver commands & connection events */ 6202 case CMD_START_DRIVER: 6203 case CMD_STOP_DRIVER: 6204 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6205 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6206 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6207 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6208 case WifiMonitor.WPS_OVERLAP_EVENT: 6209 case CMD_SET_COUNTRY_CODE: 6210 case CMD_SET_FREQUENCY_BAND: 6211 case CMD_START_PACKET_FILTERING: 6212 case CMD_STOP_PACKET_FILTERING: 6213 case CMD_START_SCAN: 6214 case CMD_DISCONNECT: 6215 case CMD_REASSOCIATE: 6216 case CMD_RECONNECT: 6217 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6218 deferMessage(message); 6219 break; 6220 case WifiMonitor.SCAN_RESULTS_EVENT: 6221 case WifiMonitor.SCAN_FAILED_EVENT: 6222 // Loose scan results obtained in Driver Starting state, they can only confuse 6223 // the state machine 6224 break; 6225 default: 6226 return NOT_HANDLED; 6227 } 6228 return HANDLED; 6229 } 6230 } 6231 6232 class DriverStartedState extends State { 6233 @Override 6234 public void enter() { 6235 6236 if (PDBG) { 6237 logd("DriverStartedState enter"); 6238 } 6239 6240 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6241 mIsRunning = true; 6242 mInDelayedStop = false; 6243 mDelayedStopCounter++; 6244 updateBatteryWorkSource(null); 6245 /** 6246 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6247 * When this mode is on, some of the low-level scan parameters used by the 6248 * driver are changed to reduce interference with bluetooth 6249 */ 6250 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6251 /* initialize network state */ 6252 setNetworkDetailedState(DetailedState.DISCONNECTED); 6253 6254 /* Remove any filtering on Multicast v6 at start */ 6255 mWifiNative.stopFilteringMulticastV6Packets(); 6256 6257 /* Reset Multicast v4 filtering state */ 6258 if (mFilteringMulticastV4Packets.get()) { 6259 mWifiNative.startFilteringMulticastV4Packets(); 6260 } else { 6261 mWifiNative.stopFilteringMulticastV4Packets(); 6262 } 6263 6264 mDhcpActive = false; 6265 6266 if (mOperationalMode != CONNECT_MODE) { 6267 mWifiNative.disconnect(); 6268 mWifiConfigStore.disableAllNetworks(); 6269 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6270 setWifiState(WIFI_STATE_DISABLED); 6271 } 6272 transitionTo(mScanModeState); 6273 } else { 6274 6275 // Status pulls in the current supplicant state and network connection state 6276 // events over the monitor connection. This helps framework sync up with 6277 // current supplicant state 6278 // TODO: actually check th supplicant status string and make sure the supplicant 6279 // is in disconnecte4d state. 6280 mWifiNative.status(); 6281 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6282 transitionTo(mDisconnectedState); 6283 transitionTo(mDisconnectedState); 6284 } 6285 6286 // We may have missed screen update at boot 6287 if (mScreenBroadcastReceived.get() == false) { 6288 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6289 Context.POWER_SERVICE); 6290 handleScreenStateChanged(powerManager.isScreenOn()); 6291 } else { 6292 // Set the right suspend mode settings 6293 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6294 && mUserWantsSuspendOpt.get()); 6295 } 6296 mWifiNative.setPowerSave(true); 6297 6298 if (mP2pSupported) { 6299 if (mOperationalMode == CONNECT_MODE) { 6300 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6301 } else { 6302 // P2P statemachine starts in disabled state, and is not enabled until 6303 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6304 // keep it disabled. 6305 } 6306 } 6307 6308 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6309 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6310 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6311 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6312 6313 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6314 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6315 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6316 mHalBasedPnoDriverSupported = true; 6317 } 6318 6319 // Enable link layer stats gathering 6320 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6321 6322 if (PDBG) { 6323 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6324 + " feature=" + mHalFeatureSet); 6325 } 6326 } 6327 6328 @Override 6329 public boolean processMessage(Message message) { 6330 logStateAndMessage(message, getClass().getSimpleName()); 6331 6332 switch(message.what) { 6333 case CMD_START_SCAN: 6334 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6335 break; 6336 case CMD_SET_FREQUENCY_BAND: 6337 int band = message.arg1; 6338 if (DBG) log("set frequency band " + band); 6339 if (mWifiNative.setBand(band)) { 6340 6341 if (PDBG) logd("did set frequency band " + band); 6342 6343 mFrequencyBand.set(band); 6344 // Flush old data - like scan results 6345 mWifiNative.bssFlush(); 6346 // Fetch the latest scan results when frequency band is set 6347// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6348 6349 if (PDBG) logd("done set frequency band " + band); 6350 6351 } else { 6352 loge("Failed to set frequency band " + band); 6353 } 6354 break; 6355 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6356 mBluetoothConnectionActive = (message.arg1 != 6357 BluetoothAdapter.STATE_DISCONNECTED); 6358 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6359 break; 6360 case CMD_STOP_DRIVER: 6361 int mode = message.arg1; 6362 6363 /* Already doing a delayed stop */ 6364 if (mInDelayedStop) { 6365 if (DBG) log("Already in delayed stop"); 6366 break; 6367 } 6368 /* disconnect right now, but leave the driver running for a bit */ 6369 mWifiConfigStore.disableAllNetworks(); 6370 6371 mInDelayedStop = true; 6372 mDelayedStopCounter++; 6373 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6374 6375 /* send regular delayed shut down */ 6376 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6377 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 6378 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6379 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6380 DRIVER_STOP_REQUEST, driverStopIntent, 6381 PendingIntent.FLAG_UPDATE_CURRENT); 6382 6383 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6384 + mDriverStopDelayMs, mDriverStopIntent); 6385 break; 6386 case CMD_START_DRIVER: 6387 if (mInDelayedStop) { 6388 mInDelayedStop = false; 6389 mDelayedStopCounter++; 6390 mAlarmManager.cancel(mDriverStopIntent); 6391 if (DBG) log("Delayed stop ignored due to start"); 6392 if (mOperationalMode == CONNECT_MODE) { 6393 mWifiConfigStore.enableAllNetworks(); 6394 } 6395 } 6396 break; 6397 case CMD_DELAYED_STOP_DRIVER: 6398 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6399 if (message.arg1 != mDelayedStopCounter) break; 6400 if (getCurrentState() != mDisconnectedState) { 6401 mWifiNative.disconnect(); 6402 handleNetworkDisconnect(); 6403 } 6404 mWakeLock.acquire(); 6405 mWifiNative.stopDriver(); 6406 mWakeLock.release(); 6407 if (mP2pSupported) { 6408 transitionTo(mWaitForP2pDisableState); 6409 } else { 6410 transitionTo(mDriverStoppingState); 6411 } 6412 break; 6413 case CMD_START_PACKET_FILTERING: 6414 if (message.arg1 == MULTICAST_V6) { 6415 mWifiNative.startFilteringMulticastV6Packets(); 6416 } else if (message.arg1 == MULTICAST_V4) { 6417 mWifiNative.startFilteringMulticastV4Packets(); 6418 } else { 6419 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6420 } 6421 break; 6422 case CMD_STOP_PACKET_FILTERING: 6423 if (message.arg1 == MULTICAST_V6) { 6424 mWifiNative.stopFilteringMulticastV6Packets(); 6425 } else if (message.arg1 == MULTICAST_V4) { 6426 mWifiNative.stopFilteringMulticastV4Packets(); 6427 } else { 6428 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6429 } 6430 break; 6431 case CMD_SET_SUSPEND_OPT_ENABLED: 6432 if (message.arg1 == 1) { 6433 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6434 mSuspendWakeLock.release(); 6435 } else { 6436 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6437 } 6438 break; 6439 case CMD_SET_HIGH_PERF_MODE: 6440 if (message.arg1 == 1) { 6441 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6442 } else { 6443 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6444 } 6445 break; 6446 case CMD_ENABLE_TDLS: 6447 if (message.obj != null) { 6448 String remoteAddress = (String) message.obj; 6449 boolean enable = (message.arg1 == 1); 6450 mWifiNative.startTdls(remoteAddress, enable); 6451 } 6452 break; 6453 case WifiMonitor.ANQP_DONE_EVENT: 6454 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6455 break; 6456 case CMD_STOP_IP_PACKET_OFFLOAD: { 6457 int slot = message.arg1; 6458 int ret = stopWifiIPPacketOffload(slot); 6459 if (mNetworkAgent != null) { 6460 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6461 } 6462 break; 6463 } 6464 default: 6465 return NOT_HANDLED; 6466 } 6467 return HANDLED; 6468 } 6469 @Override 6470 public void exit() { 6471 6472 mWifiLogger.stopLogging(); 6473 6474 mIsRunning = false; 6475 updateBatteryWorkSource(null); 6476 mScanResults = new ArrayList<>(); 6477 6478 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6479 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6480 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6481 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6482 noteScanEnd(); // wrap up any pending request. 6483 mBufferedScanMsg.clear(); 6484 } 6485 } 6486 6487 class WaitForP2pDisableState extends State { 6488 private State mTransitionToState; 6489 @Override 6490 public void enter() { 6491 switch (getCurrentMessage().what) { 6492 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6493 mTransitionToState = mInitialState; 6494 break; 6495 case CMD_DELAYED_STOP_DRIVER: 6496 mTransitionToState = mDriverStoppingState; 6497 break; 6498 case CMD_STOP_SUPPLICANT: 6499 mTransitionToState = mSupplicantStoppingState; 6500 break; 6501 default: 6502 mTransitionToState = mDriverStoppingState; 6503 break; 6504 } 6505 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6506 } 6507 @Override 6508 public boolean processMessage(Message message) { 6509 logStateAndMessage(message, getClass().getSimpleName()); 6510 6511 switch(message.what) { 6512 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6513 transitionTo(mTransitionToState); 6514 break; 6515 /* Defer wifi start/shut and driver commands */ 6516 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6517 case CMD_START_SUPPLICANT: 6518 case CMD_STOP_SUPPLICANT: 6519 case CMD_START_AP: 6520 case CMD_STOP_AP: 6521 case CMD_START_DRIVER: 6522 case CMD_STOP_DRIVER: 6523 case CMD_SET_OPERATIONAL_MODE: 6524 case CMD_SET_COUNTRY_CODE: 6525 case CMD_SET_FREQUENCY_BAND: 6526 case CMD_START_PACKET_FILTERING: 6527 case CMD_STOP_PACKET_FILTERING: 6528 case CMD_START_SCAN: 6529 case CMD_DISCONNECT: 6530 case CMD_REASSOCIATE: 6531 case CMD_RECONNECT: 6532 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6533 deferMessage(message); 6534 break; 6535 default: 6536 return NOT_HANDLED; 6537 } 6538 return HANDLED; 6539 } 6540 } 6541 6542 class DriverStoppingState extends State { 6543 @Override 6544 public boolean processMessage(Message message) { 6545 logStateAndMessage(message, getClass().getSimpleName()); 6546 6547 switch(message.what) { 6548 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6549 SupplicantState state = handleSupplicantStateChange(message); 6550 if (state == SupplicantState.INTERFACE_DISABLED) { 6551 transitionTo(mDriverStoppedState); 6552 } 6553 break; 6554 /* Queue driver commands */ 6555 case CMD_START_DRIVER: 6556 case CMD_STOP_DRIVER: 6557 case CMD_SET_COUNTRY_CODE: 6558 case CMD_SET_FREQUENCY_BAND: 6559 case CMD_START_PACKET_FILTERING: 6560 case CMD_STOP_PACKET_FILTERING: 6561 case CMD_START_SCAN: 6562 case CMD_DISCONNECT: 6563 case CMD_REASSOCIATE: 6564 case CMD_RECONNECT: 6565 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6566 deferMessage(message); 6567 break; 6568 default: 6569 return NOT_HANDLED; 6570 } 6571 return HANDLED; 6572 } 6573 } 6574 6575 class DriverStoppedState extends State { 6576 @Override 6577 public boolean processMessage(Message message) { 6578 logStateAndMessage(message, getClass().getSimpleName()); 6579 switch (message.what) { 6580 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6581 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6582 SupplicantState state = stateChangeResult.state; 6583 // A WEXT bug means that we can be back to driver started state 6584 // unexpectedly 6585 if (SupplicantState.isDriverActive(state)) { 6586 transitionTo(mDriverStartedState); 6587 } 6588 break; 6589 case CMD_START_DRIVER: 6590 mWakeLock.acquire(); 6591 mWifiNative.startDriver(); 6592 mWakeLock.release(); 6593 transitionTo(mDriverStartingState); 6594 break; 6595 default: 6596 return NOT_HANDLED; 6597 } 6598 return HANDLED; 6599 } 6600 } 6601 6602 class ScanModeState extends State { 6603 private int mLastOperationMode; 6604 @Override 6605 public void enter() { 6606 mLastOperationMode = mOperationalMode; 6607 } 6608 @Override 6609 public boolean processMessage(Message message) { 6610 logStateAndMessage(message, getClass().getSimpleName()); 6611 6612 switch(message.what) { 6613 case CMD_SET_OPERATIONAL_MODE: 6614 if (message.arg1 == CONNECT_MODE) { 6615 6616 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6617 setWifiState(WIFI_STATE_ENABLED); 6618 // Load and re-enable networks when going back to enabled state 6619 // This is essential for networks to show up after restore 6620 mWifiConfigStore.loadAndEnableAllNetworks(); 6621 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6622 } else { 6623 mWifiConfigStore.enableAllNetworks(); 6624 } 6625 6626 // Try autojoining with recent network already present in the cache 6627 // If none are found then trigger a scan which will trigger autojoin 6628 // upon reception of scan results event 6629 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6630 startScan(ENABLE_WIFI, 0, null, null); 6631 } 6632 6633 // Loose last selection choice since user toggled WiFi 6634 mWifiConfigStore. 6635 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6636 6637 mOperationalMode = CONNECT_MODE; 6638 transitionTo(mDisconnectedState); 6639 } else { 6640 // Nothing to do 6641 return HANDLED; 6642 } 6643 break; 6644 // Handle scan. All the connection related commands are 6645 // handled only in ConnectModeState 6646 case CMD_START_SCAN: 6647 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6648 break; 6649 default: 6650 return NOT_HANDLED; 6651 } 6652 return HANDLED; 6653 } 6654 } 6655 6656 6657 String smToString(Message message) { 6658 return smToString(message.what); 6659 } 6660 6661 String smToString(int what) { 6662 String s = "unknown"; 6663 switch (what) { 6664 case WifiMonitor.DRIVER_HUNG_EVENT: 6665 s = "DRIVER_HUNG_EVENT"; 6666 break; 6667 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6668 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6669 break; 6670 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6671 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6672 break; 6673 case CMD_SET_FREQUENCY_BAND: 6674 s = "CMD_SET_FREQUENCY_BAND"; 6675 break; 6676 case CMD_DELAYED_NETWORK_DISCONNECT: 6677 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6678 break; 6679 case CMD_TEST_NETWORK_DISCONNECT: 6680 s = "CMD_TEST_NETWORK_DISCONNECT"; 6681 break; 6682 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6683 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6684 break; 6685 case CMD_DISABLE_EPHEMERAL_NETWORK: 6686 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6687 break; 6688 case CMD_START_DRIVER: 6689 s = "CMD_START_DRIVER"; 6690 break; 6691 case CMD_STOP_DRIVER: 6692 s = "CMD_STOP_DRIVER"; 6693 break; 6694 case CMD_STOP_SUPPLICANT: 6695 s = "CMD_STOP_SUPPLICANT"; 6696 break; 6697 case CMD_STOP_SUPPLICANT_FAILED: 6698 s = "CMD_STOP_SUPPLICANT_FAILED"; 6699 break; 6700 case CMD_START_SUPPLICANT: 6701 s = "CMD_START_SUPPLICANT"; 6702 break; 6703 case CMD_REQUEST_AP_CONFIG: 6704 s = "CMD_REQUEST_AP_CONFIG"; 6705 break; 6706 case CMD_RESPONSE_AP_CONFIG: 6707 s = "CMD_RESPONSE_AP_CONFIG"; 6708 break; 6709 case CMD_TETHER_STATE_CHANGE: 6710 s = "CMD_TETHER_STATE_CHANGE"; 6711 break; 6712 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6713 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6714 break; 6715 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6716 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6717 break; 6718 case CMD_ADD_OR_UPDATE_NETWORK: 6719 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6720 break; 6721 case CMD_REMOVE_NETWORK: 6722 s = "CMD_REMOVE_NETWORK"; 6723 break; 6724 case CMD_ENABLE_NETWORK: 6725 s = "CMD_ENABLE_NETWORK"; 6726 break; 6727 case CMD_ENABLE_ALL_NETWORKS: 6728 s = "CMD_ENABLE_ALL_NETWORKS"; 6729 break; 6730 case CMD_AUTO_CONNECT: 6731 s = "CMD_AUTO_CONNECT"; 6732 break; 6733 case CMD_AUTO_ROAM: 6734 s = "CMD_AUTO_ROAM"; 6735 break; 6736 case CMD_AUTO_SAVE_NETWORK: 6737 s = "CMD_AUTO_SAVE_NETWORK"; 6738 break; 6739 case CMD_BOOT_COMPLETED: 6740 s = "CMD_BOOT_COMPLETED"; 6741 break; 6742 case DhcpStateMachine.CMD_START_DHCP: 6743 s = "CMD_START_DHCP"; 6744 break; 6745 case DhcpStateMachine.CMD_STOP_DHCP: 6746 s = "CMD_STOP_DHCP"; 6747 break; 6748 case DhcpStateMachine.CMD_RENEW_DHCP: 6749 s = "CMD_RENEW_DHCP"; 6750 break; 6751 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6752 s = "CMD_PRE_DHCP_ACTION"; 6753 break; 6754 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6755 s = "CMD_POST_DHCP_ACTION"; 6756 break; 6757 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6758 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6759 break; 6760 case DhcpStateMachine.CMD_ON_QUIT: 6761 s = "CMD_ON_QUIT"; 6762 break; 6763 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6764 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6765 break; 6766 case WifiManager.DISABLE_NETWORK: 6767 s = "WifiManager.DISABLE_NETWORK"; 6768 break; 6769 case CMD_BLACKLIST_NETWORK: 6770 s = "CMD_BLACKLIST_NETWORK"; 6771 break; 6772 case CMD_CLEAR_BLACKLIST: 6773 s = "CMD_CLEAR_BLACKLIST"; 6774 break; 6775 case CMD_SAVE_CONFIG: 6776 s = "CMD_SAVE_CONFIG"; 6777 break; 6778 case CMD_GET_CONFIGURED_NETWORKS: 6779 s = "CMD_GET_CONFIGURED_NETWORKS"; 6780 break; 6781 case CMD_GET_SUPPORTED_FEATURES: 6782 s = "CMD_GET_SUPPORTED_FEATURES"; 6783 break; 6784 case CMD_UNWANTED_NETWORK: 6785 s = "CMD_UNWANTED_NETWORK"; 6786 break; 6787 case CMD_NETWORK_STATUS: 6788 s = "CMD_NETWORK_STATUS"; 6789 break; 6790 case CMD_GET_LINK_LAYER_STATS: 6791 s = "CMD_GET_LINK_LAYER_STATS"; 6792 break; 6793 case CMD_GET_MATCHING_CONFIG: 6794 s = "CMD_GET_MATCHING_CONFIG"; 6795 break; 6796 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6797 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6798 break; 6799 case CMD_DISCONNECT: 6800 s = "CMD_DISCONNECT"; 6801 break; 6802 case CMD_RECONNECT: 6803 s = "CMD_RECONNECT"; 6804 break; 6805 case CMD_REASSOCIATE: 6806 s = "CMD_REASSOCIATE"; 6807 break; 6808 case CMD_GET_CONNECTION_STATISTICS: 6809 s = "CMD_GET_CONNECTION_STATISTICS"; 6810 break; 6811 case CMD_SET_HIGH_PERF_MODE: 6812 s = "CMD_SET_HIGH_PERF_MODE"; 6813 break; 6814 case CMD_SET_COUNTRY_CODE: 6815 s = "CMD_SET_COUNTRY_CODE"; 6816 break; 6817 case CMD_ENABLE_RSSI_POLL: 6818 s = "CMD_ENABLE_RSSI_POLL"; 6819 break; 6820 case CMD_RSSI_POLL: 6821 s = "CMD_RSSI_POLL"; 6822 break; 6823 case CMD_START_PACKET_FILTERING: 6824 s = "CMD_START_PACKET_FILTERING"; 6825 break; 6826 case CMD_STOP_PACKET_FILTERING: 6827 s = "CMD_STOP_PACKET_FILTERING"; 6828 break; 6829 case CMD_SET_SUSPEND_OPT_ENABLED: 6830 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6831 break; 6832 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6833 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6834 break; 6835 case CMD_UPDATE_LINKPROPERTIES: 6836 s = "CMD_UPDATE_LINKPROPERTIES"; 6837 break; 6838 case CMD_RELOAD_TLS_AND_RECONNECT: 6839 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6840 break; 6841 case WifiManager.CONNECT_NETWORK: 6842 s = "CONNECT_NETWORK"; 6843 break; 6844 case WifiManager.SAVE_NETWORK: 6845 s = "SAVE_NETWORK"; 6846 break; 6847 case WifiManager.FORGET_NETWORK: 6848 s = "FORGET_NETWORK"; 6849 break; 6850 case WifiMonitor.SUP_CONNECTION_EVENT: 6851 s = "SUP_CONNECTION_EVENT"; 6852 break; 6853 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6854 s = "SUP_DISCONNECTION_EVENT"; 6855 break; 6856 case WifiMonitor.SCAN_RESULTS_EVENT: 6857 s = "SCAN_RESULTS_EVENT"; 6858 break; 6859 case WifiMonitor.SCAN_FAILED_EVENT: 6860 s = "SCAN_FAILED_EVENT"; 6861 break; 6862 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6863 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6864 break; 6865 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6866 s = "AUTHENTICATION_FAILURE_EVENT"; 6867 break; 6868 case WifiMonitor.SSID_TEMP_DISABLED: 6869 s = "SSID_TEMP_DISABLED"; 6870 break; 6871 case WifiMonitor.SSID_REENABLED: 6872 s = "SSID_REENABLED"; 6873 break; 6874 case WifiMonitor.WPS_SUCCESS_EVENT: 6875 s = "WPS_SUCCESS_EVENT"; 6876 break; 6877 case WifiMonitor.WPS_FAIL_EVENT: 6878 s = "WPS_FAIL_EVENT"; 6879 break; 6880 case WifiMonitor.SUP_REQUEST_IDENTITY: 6881 s = "SUP_REQUEST_IDENTITY"; 6882 break; 6883 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6884 s = "NETWORK_CONNECTION_EVENT"; 6885 break; 6886 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6887 s = "NETWORK_DISCONNECTION_EVENT"; 6888 break; 6889 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6890 s = "ASSOCIATION_REJECTION_EVENT"; 6891 break; 6892 case WifiMonitor.ANQP_DONE_EVENT: 6893 s = "WifiMonitor.ANQP_DONE_EVENT"; 6894 break; 6895 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6896 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6897 break; 6898 case WifiMonitor.HS20_DEAUTH_EVENT: 6899 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6900 break; 6901 case WifiMonitor.GAS_QUERY_START_EVENT: 6902 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6903 break; 6904 case CMD_SET_OPERATIONAL_MODE: 6905 s = "CMD_SET_OPERATIONAL_MODE"; 6906 break; 6907 case CMD_START_SCAN: 6908 s = "CMD_START_SCAN"; 6909 break; 6910 case CMD_DISABLE_P2P_RSP: 6911 s = "CMD_DISABLE_P2P_RSP"; 6912 break; 6913 case CMD_DISABLE_P2P_REQ: 6914 s = "CMD_DISABLE_P2P_REQ"; 6915 break; 6916 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6917 s = "GOOD_LINK_DETECTED"; 6918 break; 6919 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6920 s = "POOR_LINK_DETECTED"; 6921 break; 6922 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6923 s = "GROUP_CREATING_TIMED_OUT"; 6924 break; 6925 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6926 s = "P2P_CONNECTION_CHANGED"; 6927 break; 6928 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6929 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6930 break; 6931 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6932 s = "P2P.SET_MIRACAST_MODE"; 6933 break; 6934 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6935 s = "P2P.BLOCK_DISCOVERY"; 6936 break; 6937 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6938 s = "P2P.SET_COUNTRY_CODE"; 6939 break; 6940 case WifiManager.CANCEL_WPS: 6941 s = "CANCEL_WPS"; 6942 break; 6943 case WifiManager.CANCEL_WPS_FAILED: 6944 s = "CANCEL_WPS_FAILED"; 6945 break; 6946 case WifiManager.CANCEL_WPS_SUCCEDED: 6947 s = "CANCEL_WPS_SUCCEDED"; 6948 break; 6949 case WifiManager.START_WPS: 6950 s = "START_WPS"; 6951 break; 6952 case WifiManager.START_WPS_SUCCEEDED: 6953 s = "START_WPS_SUCCEEDED"; 6954 break; 6955 case WifiManager.WPS_FAILED: 6956 s = "WPS_FAILED"; 6957 break; 6958 case WifiManager.WPS_COMPLETED: 6959 s = "WPS_COMPLETED"; 6960 break; 6961 case WifiManager.RSSI_PKTCNT_FETCH: 6962 s = "RSSI_PKTCNT_FETCH"; 6963 break; 6964 case CMD_IP_CONFIGURATION_LOST: 6965 s = "CMD_IP_CONFIGURATION_LOST"; 6966 break; 6967 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6968 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6969 break; 6970 case CMD_IP_REACHABILITY_LOST: 6971 s = "CMD_IP_REACHABILITY_LOST"; 6972 break; 6973 case CMD_STATIC_IP_SUCCESS: 6974 s = "CMD_STATIC_IP_SUCCESSFUL"; 6975 break; 6976 case CMD_STATIC_IP_FAILURE: 6977 s = "CMD_STATIC_IP_FAILURE"; 6978 break; 6979 case DhcpStateMachine.DHCP_SUCCESS: 6980 s = "DHCP_SUCCESS"; 6981 break; 6982 case DhcpStateMachine.DHCP_FAILURE: 6983 s = "DHCP_FAILURE"; 6984 break; 6985 case CMD_TARGET_BSSID: 6986 s = "CMD_TARGET_BSSID"; 6987 break; 6988 case CMD_ASSOCIATED_BSSID: 6989 s = "CMD_ASSOCIATED_BSSID"; 6990 break; 6991 case CMD_REMOVE_APP_CONFIGURATIONS: 6992 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6993 break; 6994 case CMD_REMOVE_USER_CONFIGURATIONS: 6995 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6996 break; 6997 case CMD_ROAM_WATCHDOG_TIMER: 6998 s = "CMD_ROAM_WATCHDOG_TIMER"; 6999 break; 7000 case CMD_SCREEN_STATE_CHANGED: 7001 s = "CMD_SCREEN_STATE_CHANGED"; 7002 break; 7003 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7004 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 7005 break; 7006 case CMD_RESTART_AUTOJOIN_OFFLOAD: 7007 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 7008 break; 7009 case CMD_STARTED_PNO_DBG: 7010 s = "CMD_STARTED_PNO_DBG"; 7011 break; 7012 case CMD_STARTED_GSCAN_DBG: 7013 s = "CMD_STARTED_GSCAN_DBG"; 7014 break; 7015 case CMD_PNO_NETWORK_FOUND: 7016 s = "CMD_PNO_NETWORK_FOUND"; 7017 break; 7018 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 7019 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 7020 break; 7021 case CMD_START_IP_PACKET_OFFLOAD: 7022 s = "CMD_START_IP_PACKET_OFFLOAD"; 7023 break; 7024 case CMD_STOP_IP_PACKET_OFFLOAD: 7025 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 7026 break; 7027 case CMD_START_RSSI_MONITORING_OFFLOAD: 7028 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 7029 break; 7030 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 7031 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 7032 break; 7033 case CMD_RSSI_THRESHOLD_BREACH: 7034 s = "CMD_RSSI_THRESHOLD_BREACH"; 7035 break; 7036 default: 7037 s = "what:" + Integer.toString(what); 7038 break; 7039 } 7040 return s; 7041 } 7042 7043 void registerConnected() { 7044 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7045 long now_ms = System.currentTimeMillis(); 7046 // We are switching away from this configuration, 7047 // hence record the time we were connected last 7048 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7049 if (config != null) { 7050 config.lastConnected = System.currentTimeMillis(); 7051 config.autoJoinBailedDueToLowRssi = false; 7052 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 7053 config.numConnectionFailures = 0; 7054 config.numIpConfigFailures = 0; 7055 config.numAuthFailures = 0; 7056 config.numAssociation++; 7057 } 7058 mBadLinkspeedcount = 0; 7059 } 7060 } 7061 7062 void registerDisconnected() { 7063 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7064 long now_ms = System.currentTimeMillis(); 7065 // We are switching away from this configuration, 7066 // hence record the time we were connected last 7067 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7068 if (config != null) { 7069 config.lastDisconnected = System.currentTimeMillis(); 7070 if (config.ephemeral) { 7071 // Remove ephemeral WifiConfigurations from file 7072 mWifiConfigStore.forgetNetwork(mLastNetworkId); 7073 } 7074 } 7075 } 7076 } 7077 7078 void noteWifiDisabledWhileAssociated() { 7079 // We got disabled by user while we were associated, make note of it 7080 int rssi = mWifiInfo.getRssi(); 7081 WifiConfiguration config = getCurrentWifiConfiguration(); 7082 if (getCurrentState() == mConnectedState 7083 && rssi != WifiInfo.INVALID_RSSI 7084 && config != null) { 7085 boolean is24GHz = mWifiInfo.is24GHz(); 7086 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 7087 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 7088 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 7089 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 7090 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 7091 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 7092 if (isBadRSSI) { 7093 // Take note that we got disabled while RSSI was Bad 7094 config.numUserTriggeredWifiDisableLowRSSI++; 7095 } else if (isLowRSSI) { 7096 // Take note that we got disabled while RSSI was Low 7097 config.numUserTriggeredWifiDisableBadRSSI++; 7098 } else if (!isHighRSSI) { 7099 // Take note that we got disabled while RSSI was Not high 7100 config.numUserTriggeredWifiDisableNotHighRSSI++; 7101 } 7102 } 7103 } 7104 7105 WifiConfiguration getCurrentWifiConfiguration() { 7106 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 7107 return null; 7108 } 7109 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7110 } 7111 7112 ScanResult getCurrentScanResult() { 7113 WifiConfiguration config = getCurrentWifiConfiguration(); 7114 if (config == null) { 7115 return null; 7116 } 7117 String BSSID = mWifiInfo.getBSSID(); 7118 if (BSSID == null) { 7119 BSSID = mTargetRoamBSSID; 7120 } 7121 ScanDetailCache scanDetailCache = 7122 mWifiConfigStore.getScanDetailCache(config); 7123 7124 if (scanDetailCache == null) { 7125 return null; 7126 } 7127 7128 return scanDetailCache.get(BSSID); 7129 } 7130 7131 String getCurrentBSSID() { 7132 if (linkDebouncing) { 7133 return null; 7134 } 7135 return mLastBssid; 7136 } 7137 7138 class ConnectModeState extends State { 7139 7140 @Override 7141 public void enter() { 7142 connectScanningService(); 7143 } 7144 7145 @Override 7146 public boolean processMessage(Message message) { 7147 WifiConfiguration config; 7148 int netId; 7149 boolean ok; 7150 boolean didDisconnect; 7151 String bssid; 7152 String ssid; 7153 NetworkUpdateResult result; 7154 logStateAndMessage(message, getClass().getSimpleName()); 7155 7156 switch (message.what) { 7157 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7158 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 7159 didBlackListBSSID = false; 7160 bssid = (String) message.obj; 7161 if (bssid == null || TextUtils.isEmpty(bssid)) { 7162 // If BSSID is null, use the target roam BSSID 7163 bssid = mTargetRoamBSSID; 7164 } 7165 if (bssid != null) { 7166 // If we have a BSSID, tell configStore to black list it 7167 synchronized(mScanResultCache) { 7168 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 7169 (mLastNetworkId, bssid, false); 7170 } 7171 } 7172 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 7173 break; 7174 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7175 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 7176 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 7177 break; 7178 case WifiMonitor.SSID_TEMP_DISABLED: 7179 case WifiMonitor.SSID_REENABLED: 7180 String substr = (String) message.obj; 7181 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 7182 "temp-disabled" : "re-enabled"; 7183 logd("ConnectModeState SSID state=" + en + " nid=" 7184 + Integer.toString(message.arg1) + " [" + substr + "]"); 7185 synchronized(mScanResultCache) { 7186 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 7187 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 7188 } 7189 break; 7190 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7191 SupplicantState state = handleSupplicantStateChange(message); 7192 // A driver/firmware hang can now put the interface in a down state. 7193 // We detect the interface going down and recover from it 7194 if (!SupplicantState.isDriverActive(state)) { 7195 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7196 handleNetworkDisconnect(); 7197 } 7198 log("Detected an interface down, restart driver"); 7199 transitionTo(mDriverStoppedState); 7200 sendMessage(CMD_START_DRIVER); 7201 break; 7202 } 7203 7204 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7205 // when authentication times out after a successful connection, 7206 // we can figure this from the supplicant state. If supplicant 7207 // state is DISCONNECTED, but the mNetworkInfo says we are not 7208 // disconnected, we need to handle a disconnection 7209 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7210 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7211 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7212 handleNetworkDisconnect(); 7213 transitionTo(mDisconnectedState); 7214 } 7215 7216 // If we have COMPLETED a connection to a BSSID, start doing 7217 // DNAv4/DNAv6 -style probing for on-link neighbors of 7218 // interest (e.g. routers); harmless if none are configured. 7219 if (state == SupplicantState.COMPLETED) { 7220 if (mIpReachabilityMonitor != null) { 7221 mIpReachabilityMonitor.probeAll(); 7222 } 7223 } 7224 break; 7225 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7226 if (message.arg1 == 1) { 7227 mWifiNative.disconnect(); 7228 mTemporarilyDisconnectWifi = true; 7229 } else { 7230 mWifiNative.reconnect(); 7231 mTemporarilyDisconnectWifi = false; 7232 } 7233 break; 7234 case CMD_ADD_OR_UPDATE_NETWORK: 7235 config = (WifiConfiguration) message.obj; 7236 7237 if (!recordUidIfAuthorized(config, message.sendingUid, 7238 /* onlyAnnotate */ false)) { 7239 logw("Not authorized to update network " 7240 + " config=" + config.SSID 7241 + " cnid=" + config.networkId 7242 + " uid=" + message.sendingUid); 7243 replyToMessage(message, message.what, FAILURE); 7244 break; 7245 } 7246 7247 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7248 if (res < 0) { 7249 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7250 } else { 7251 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7252 if (curConfig != null && config != null) { 7253 if (curConfig.priority < config.priority 7254 && config.status == WifiConfiguration.Status.ENABLED) { 7255 // Interpret this as a connect attempt 7256 // Set the last selected configuration so as to allow the system to 7257 // stick the last user choice without persisting the choice 7258 mWifiConfigStore.setLastSelectedConfiguration(res); 7259 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7260 mWifiConfigStore.writeKnownNetworkHistory(false); 7261 7262 // Remember time of last connection attempt 7263 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7264 7265 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7266 7267 // As a courtesy to the caller, trigger a scan now 7268 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7269 } 7270 } 7271 } 7272 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7273 break; 7274 case CMD_REMOVE_NETWORK: 7275 netId = message.arg1; 7276 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7277 /* onlyAnnotate */ false)) { 7278 logw("Not authorized to remove network " 7279 + " cnid=" + netId 7280 + " uid=" + message.sendingUid); 7281 replyToMessage(message, message.what, FAILURE); 7282 break; 7283 } 7284 7285 ok = mWifiConfigStore.removeNetwork(message.arg1); 7286 if (!ok) { 7287 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7288 } 7289 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7290 break; 7291 case CMD_ENABLE_NETWORK: 7292 boolean disableOthers = message.arg2 == 1; 7293 netId = message.arg1; 7294 config = mWifiConfigStore.getWifiConfiguration(netId); 7295 if (config == null) { 7296 loge("No network with id = " + netId); 7297 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7298 break; 7299 } 7300 7301 // Tell autojoin the user did try to select to that network 7302 // However, do NOT persist the choice by bumping the priority of the network 7303 if (disableOthers) { 7304 mWifiAutoJoinController. 7305 updateConfigurationHistory(netId, true, false); 7306 // Set the last selected configuration so as to allow the system to 7307 // stick the last user choice without persisting the choice 7308 mWifiConfigStore.setLastSelectedConfiguration(netId); 7309 7310 // Remember time of last connection attempt 7311 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7312 7313 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7314 } 7315 // Cancel auto roam requests 7316 autoRoamSetBSSID(netId, "any"); 7317 7318 int uid = message.sendingUid; 7319 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7320 if (!ok) { 7321 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7322 } 7323 7324 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7325 break; 7326 case CMD_ENABLE_ALL_NETWORKS: 7327 long time = android.os.SystemClock.elapsedRealtime(); 7328 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7329 mWifiConfigStore.enableAllNetworks(); 7330 mLastEnableAllNetworksTime = time; 7331 } 7332 break; 7333 case WifiManager.DISABLE_NETWORK: 7334 if (mWifiConfigStore.disableNetwork(message.arg1, 7335 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7336 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7337 } else { 7338 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7339 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7340 WifiManager.ERROR); 7341 } 7342 break; 7343 case CMD_DISABLE_EPHEMERAL_NETWORK: 7344 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7345 if (config != null) { 7346 if (config.networkId == mLastNetworkId) { 7347 // Disconnect and let autojoin reselect a new network 7348 sendMessage(CMD_DISCONNECT); 7349 } 7350 } 7351 break; 7352 case CMD_BLACKLIST_NETWORK: 7353 mWifiConfigStore.blackListBssid((String) message.obj); 7354 break; 7355 case CMD_CLEAR_BLACKLIST: 7356 mWifiConfigStore.clearBssidBlacklist(); 7357 break; 7358 case CMD_SAVE_CONFIG: 7359 ok = mWifiConfigStore.saveConfig(); 7360 7361 if (DBG) logd("did save config " + ok); 7362 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7363 7364 // Inform the backup manager about a data change 7365 IBackupManager ibm = IBackupManager.Stub.asInterface( 7366 ServiceManager.getService(Context.BACKUP_SERVICE)); 7367 if (ibm != null) { 7368 try { 7369 ibm.dataChanged("com.android.providers.settings"); 7370 } catch (Exception e) { 7371 // Try again later 7372 } 7373 } 7374 break; 7375 case CMD_GET_CONFIGURED_NETWORKS: 7376 replyToMessage(message, message.what, 7377 mWifiConfigStore.getConfiguredNetworks()); 7378 break; 7379 case WifiMonitor.SUP_REQUEST_IDENTITY: 7380 int networkId = message.arg2; 7381 boolean identitySent = false; 7382 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7383 7384 if (targetWificonfiguration != null 7385 && targetWificonfiguration.enterpriseConfig != null) { 7386 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7387 } 7388 7389 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7390 if (targetWificonfiguration != null 7391 && targetWificonfiguration.networkId == networkId 7392 && targetWificonfiguration.allowedKeyManagement 7393 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7394 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7395 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7396 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7397 TelephonyManager tm = (TelephonyManager) 7398 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7399 if (tm != null) { 7400 String imsi = tm.getSubscriberId(); 7401 String mccMnc = ""; 7402 7403 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7404 mccMnc = tm.getSimOperator(); 7405 7406 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7407 7408 if (!identity.isEmpty()) { 7409 mWifiNative.simIdentityResponse(networkId, identity); 7410 identitySent = true; 7411 } 7412 } 7413 } 7414 if (!identitySent) { 7415 // Supplicant lacks credentials to connect to that network, hence black list 7416 ssid = (String) message.obj; 7417 if (targetWificonfiguration != null && ssid != null 7418 && targetWificonfiguration.SSID != null 7419 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7420 mWifiConfigStore.handleSSIDStateChange( 7421 targetWificonfiguration.networkId, false, 7422 "AUTH_FAILED no identity", null); 7423 } 7424 // Disconnect now, as we don't have any way to fullfill 7425 // the supplicant request. 7426 mWifiConfigStore.setLastSelectedConfiguration( 7427 WifiConfiguration.INVALID_NETWORK_ID); 7428 mWifiNative.disconnect(); 7429 } 7430 break; 7431 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7432 logd("Received SUP_REQUEST_SIM_AUTH"); 7433 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7434 if (requestData != null) { 7435 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7436 handleGsmAuthRequest(requestData); 7437 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7438 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7439 handle3GAuthRequest(requestData); 7440 } 7441 } else { 7442 loge("Invalid sim auth request"); 7443 } 7444 break; 7445 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7446 replyToMessage(message, message.what, 7447 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7448 break; 7449 case CMD_GET_MATCHING_CONFIG: 7450 replyToMessage(message, message.what, 7451 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7452 break; 7453 /* Do a redundant disconnect without transition */ 7454 case CMD_DISCONNECT: 7455 mWifiConfigStore.setLastSelectedConfiguration 7456 (WifiConfiguration.INVALID_NETWORK_ID); 7457 mWifiNative.disconnect(); 7458 break; 7459 case CMD_RECONNECT: 7460 mWifiAutoJoinController.attemptAutoJoin(); 7461 break; 7462 case CMD_REASSOCIATE: 7463 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7464 mWifiNative.reassociate(); 7465 break; 7466 case CMD_RELOAD_TLS_AND_RECONNECT: 7467 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7468 logd("Reconnecting to give a chance to un-connected TLS networks"); 7469 mWifiNative.disconnect(); 7470 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7471 mWifiNative.reconnect(); 7472 } 7473 break; 7474 case CMD_AUTO_ROAM: 7475 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7476 return HANDLED; 7477 case CMD_AUTO_CONNECT: 7478 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7479 * associated status to the STATUS command but somehow-someplace still thinks 7480 * it is associated and thus will ignore select/reconnect command with 7481 * following message: 7482 * "Already associated with the selected network - do nothing" 7483 * 7484 * Hence, sends a disconnect to supplicant first. 7485 */ 7486 didDisconnect = false; 7487 if (getCurrentState() != mDisconnectedState) { 7488 /** Supplicant will ignore the reconnect if we are currently associated, 7489 * hence trigger a disconnect 7490 */ 7491 didDisconnect = true; 7492 mWifiNative.disconnect(); 7493 } 7494 7495 /* connect command coming from auto-join */ 7496 config = (WifiConfiguration) message.obj; 7497 netId = message.arg1; 7498 int roam = message.arg2; 7499 logd("CMD_AUTO_CONNECT sup state " 7500 + mSupplicantStateTracker.getSupplicantStateName() 7501 + " my state " + getCurrentState().getName() 7502 + " nid=" + Integer.toString(netId) 7503 + " roam=" + Integer.toString(roam)); 7504 if (config == null) { 7505 loge("AUTO_CONNECT and no config, bail out..."); 7506 break; 7507 } 7508 7509 /* Make sure we cancel any previous roam request */ 7510 autoRoamSetBSSID(netId, config.BSSID); 7511 7512 /* Save the network config */ 7513 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7514 + " nid=" + Integer.toString(netId)); 7515 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7516 netId = result.getNetworkId(); 7517 logd("CMD_AUTO_CONNECT did save config -> " 7518 + " nid=" + Integer.toString(netId)); 7519 7520 // Since we updated the config,read it back from config store: 7521 config = mWifiConfigStore.getWifiConfiguration(netId); 7522 if (config == null) { 7523 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7524 break; 7525 } 7526 if (netId != config.networkId) { 7527 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7528 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7529 break; 7530 } 7531 7532 if (deferForUserInput(message, netId, false)) { 7533 break; 7534 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7535 WifiConfiguration.USER_BANNED) { 7536 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7537 WifiManager.NOT_AUTHORIZED); 7538 break; 7539 } 7540 7541 // Make sure the network is enabled, since supplicant will not reenable it 7542 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7543 7544 // If we're autojoining a network that the user or an app explicitly selected, 7545 // keep track of the UID that selected it. 7546 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7547 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7548 7549 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7550 lastConnectUid) && mWifiNative.reconnect()) { 7551 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7552 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7553 config = mWifiConfigStore.getWifiConfiguration(netId); 7554 if (config != null 7555 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7556 // If we autojoined a different config than the user selected one, 7557 // it means we could not see the last user selection, 7558 // or that the last user selection was faulty and ended up blacklisted 7559 // for some reason (in which case the user is notified with an error 7560 // message in the Wifi picker), and thus we managed to auto-join away 7561 // from the selected config. -> in that case we need to forget 7562 // the selection because we don't want to abruptly switch back to it. 7563 // 7564 // Note that the user selection is also forgotten after a period of time 7565 // during which the device has been disconnected. 7566 // The default value is 30 minutes : see the code path at bottom of 7567 // setScanResults() function. 7568 mWifiConfigStore. 7569 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7570 } 7571 mAutoRoaming = roam; 7572 if (isRoaming() || linkDebouncing) { 7573 transitionTo(mRoamingState); 7574 } else if (didDisconnect) { 7575 transitionTo(mDisconnectingState); 7576 } else { 7577 /* Already in disconnected state, nothing to change */ 7578 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7579 int delay = 60 * 1000; 7580 if (VDBG) { 7581 logd("Starting PNO alarm: " + delay); 7582 } 7583 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7584 System.currentTimeMillis() + delay, 7585 mPnoIntent); 7586 } 7587 mRestartAutoJoinOffloadCounter++; 7588 } 7589 } else { 7590 loge("Failed to connect config: " + config + " netId: " + netId); 7591 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7592 WifiManager.ERROR); 7593 break; 7594 } 7595 break; 7596 case CMD_REMOVE_APP_CONFIGURATIONS: 7597 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7598 break; 7599 case CMD_REMOVE_USER_CONFIGURATIONS: 7600 mWifiConfigStore.removeNetworksForUser(message.arg1); 7601 break; 7602 case WifiManager.CONNECT_NETWORK: 7603 /** 7604 * The connect message can contain a network id passed as arg1 on message or 7605 * or a config passed as obj on message. 7606 * For a new network, a config is passed to create and connect. 7607 * For an existing network, a network id is passed 7608 */ 7609 netId = message.arg1; 7610 config = (WifiConfiguration) message.obj; 7611 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7612 boolean updatedExisting = false; 7613 7614 /* Save the network config */ 7615 if (config != null) { 7616 // When connecting to an access point, WifiStateMachine wants to update the 7617 // relevant config with administrative data. This update should not be 7618 // considered a 'real' update, therefore lockdown by Device Owner must be 7619 // disregarded. 7620 if (!recordUidIfAuthorized(config, message.sendingUid, 7621 /* onlyAnnotate */ true)) { 7622 logw("Not authorized to update network " 7623 + " config=" + config.SSID 7624 + " cnid=" + config.networkId 7625 + " uid=" + message.sendingUid); 7626 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7627 WifiManager.NOT_AUTHORIZED); 7628 break; 7629 } 7630 7631 String configKey = config.configKey(true /* allowCached */); 7632 WifiConfiguration savedConfig = 7633 mWifiConfigStore.getWifiConfiguration(configKey); 7634 if (savedConfig != null) { 7635 // There is an existing config with this netId, but it wasn't exposed 7636 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7637 // getConfiguredNetworks). Remove those bits and update the config. 7638 config = savedConfig; 7639 logd("CONNECT_NETWORK updating existing config with id=" + 7640 config.networkId + " configKey=" + configKey); 7641 config.ephemeral = false; 7642 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7643 updatedExisting = true; 7644 } 7645 7646 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7647 netId = result.getNetworkId(); 7648 } 7649 config = mWifiConfigStore.getWifiConfiguration(netId); 7650 7651 if (config == null) { 7652 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7653 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7654 + getCurrentState().getName()); 7655 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7656 WifiManager.ERROR); 7657 break; 7658 } else { 7659 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7660 logd("CONNECT_NETWORK id=" + Integer.toString(netId) 7661 + " config=" + config.SSID 7662 + " cnid=" + config.networkId 7663 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7664 + " my state " + getCurrentState().getName() 7665 + " uid = " + message.sendingUid 7666 + wasSkipped); 7667 } 7668 7669 autoRoamSetBSSID(netId, "any"); 7670 7671 if (message.sendingUid == Process.WIFI_UID 7672 || message.sendingUid == Process.SYSTEM_UID) { 7673 // As a sanity measure, clear the BSSID in the supplicant network block. 7674 // If system or Wifi Settings want to connect, they will not 7675 // specify the BSSID. 7676 // If an app however had added a BSSID to this configuration, and the BSSID 7677 // was wrong, Then we would forever fail to connect until that BSSID 7678 // is cleaned up. 7679 clearConfigBSSID(config, "CONNECT_NETWORK"); 7680 } 7681 7682 if (deferForUserInput(message, netId, true)) { 7683 break; 7684 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7685 WifiConfiguration.USER_BANNED) { 7686 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7687 WifiManager.NOT_AUTHORIZED); 7688 break; 7689 } 7690 7691 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7692 7693 /* Tell autojoin the user did try to connect to that network if from settings */ 7694 boolean persist = 7695 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7696 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7697 7698 mWifiConfigStore.setLastSelectedConfiguration(netId); 7699 7700 didDisconnect = false; 7701 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7702 && mLastNetworkId != netId) { 7703 /** Supplicant will ignore the reconnect if we are currently associated, 7704 * hence trigger a disconnect 7705 */ 7706 didDisconnect = true; 7707 mWifiNative.disconnect(); 7708 } 7709 7710 // Make sure the network is enabled, since supplicant will not reenable it 7711 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7712 7713 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7714 message.sendingUid) && mWifiNative.reconnect()) { 7715 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7716 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7717 7718 /* The state tracker handles enabling networks upon completion/failure */ 7719 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7720 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7721 if (didDisconnect) { 7722 /* Expect a disconnection from the old connection */ 7723 transitionTo(mDisconnectingState); 7724 } else if (updatedExisting && getCurrentState() == mConnectedState && 7725 getCurrentWifiConfiguration().networkId == netId) { 7726 // Update the current set of network capabilities, but stay in the 7727 // current state. 7728 updateCapabilities(config); 7729 } else { 7730 /** 7731 * Directly go to disconnected state where we 7732 * process the connection events from supplicant 7733 **/ 7734 transitionTo(mDisconnectedState); 7735 } 7736 } else { 7737 loge("Failed to connect config: " + config + " netId: " + netId); 7738 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7739 WifiManager.ERROR); 7740 break; 7741 } 7742 break; 7743 case WifiManager.SAVE_NETWORK: 7744 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7745 // Fall thru 7746 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7747 lastSavedConfigurationAttempt = null; // Used for debug 7748 config = (WifiConfiguration) message.obj; 7749 if (config == null) { 7750 loge("ERROR: SAVE_NETWORK with null configuration" 7751 + mSupplicantStateTracker.getSupplicantStateName() 7752 + " my state " + getCurrentState().getName()); 7753 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7754 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7755 WifiManager.ERROR); 7756 break; 7757 } 7758 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7759 int nid = config.networkId; 7760 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7761 + " config=" + config.SSID 7762 + " nid=" + config.networkId 7763 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7764 + " my state " + getCurrentState().getName()); 7765 7766 // Only record the uid if this is user initiated 7767 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7768 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7769 /* onlyAnnotate */ false)) { 7770 logw("Not authorized to update network " 7771 + " config=" + config.SSID 7772 + " cnid=" + config.networkId 7773 + " uid=" + message.sendingUid); 7774 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7775 WifiManager.NOT_AUTHORIZED); 7776 break; 7777 } 7778 7779 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7780 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7781 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7782 if (result.hasIpChanged()) { 7783 // The currently connection configuration was changed 7784 // We switched from DHCP to static or from static to DHCP, or the 7785 // static IP address has changed. 7786 log("Reconfiguring IP on connection"); 7787 // TODO: clear addresses and disable IPv6 7788 // to simplify obtainingIpState. 7789 transitionTo(mObtainingIpState); 7790 } 7791 if (result.hasProxyChanged()) { 7792 log("Reconfiguring proxy on connection"); 7793 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7794 } 7795 } 7796 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7797 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7798 7799 if (VDBG) { 7800 logd("Success save network nid=" 7801 + Integer.toString(result.getNetworkId())); 7802 } 7803 7804 synchronized(mScanResultCache) { 7805 /** 7806 * If the command comes from WifiManager, then 7807 * tell autojoin the user did try to modify and save that network, 7808 * and interpret the SAVE_NETWORK as a request to connect 7809 */ 7810 boolean user = message.what == WifiManager.SAVE_NETWORK; 7811 7812 // Did this connect come from settings 7813 boolean persistConnect = 7814 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7815 7816 if (user) { 7817 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7818 mWifiConfigStore.writeKnownNetworkHistory(false); 7819 } 7820 7821 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7822 , user, persistConnect); 7823 mWifiAutoJoinController.attemptAutoJoin(); 7824 } 7825 } else { 7826 loge("Failed to save network"); 7827 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7828 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7829 WifiManager.ERROR); 7830 } 7831 break; 7832 case WifiManager.FORGET_NETWORK: 7833 // Debug only, remember last configuration that was forgotten 7834 WifiConfiguration toRemove 7835 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7836 if (toRemove == null) { 7837 lastForgetConfigurationAttempt = null; 7838 } else { 7839 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7840 } 7841 // check that the caller owns this network 7842 netId = message.arg1; 7843 7844 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7845 /* onlyAnnotate */ false)) { 7846 logw("Not authorized to forget network " 7847 + " cnid=" + netId 7848 + " uid=" + message.sendingUid); 7849 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7850 WifiManager.NOT_AUTHORIZED); 7851 break; 7852 } 7853 7854 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7855 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7856 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7857 (WifiConfiguration) message.obj); 7858 } else { 7859 loge("Failed to forget network"); 7860 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7861 WifiManager.ERROR); 7862 } 7863 break; 7864 case WifiManager.START_WPS: 7865 WpsInfo wpsInfo = (WpsInfo) message.obj; 7866 WpsResult wpsResult; 7867 switch (wpsInfo.setup) { 7868 case WpsInfo.PBC: 7869 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7870 break; 7871 case WpsInfo.KEYPAD: 7872 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7873 break; 7874 case WpsInfo.DISPLAY: 7875 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7876 break; 7877 default: 7878 wpsResult = new WpsResult(Status.FAILURE); 7879 loge("Invalid setup for WPS"); 7880 break; 7881 } 7882 mWifiConfigStore.setLastSelectedConfiguration 7883 (WifiConfiguration.INVALID_NETWORK_ID); 7884 if (wpsResult.status == Status.SUCCESS) { 7885 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7886 transitionTo(mWpsRunningState); 7887 } else { 7888 loge("Failed to start WPS with config " + wpsInfo.toString()); 7889 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7890 } 7891 break; 7892 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7893 if (DBG) log("Network connection established"); 7894 mLastNetworkId = message.arg1; 7895 mLastBssid = (String) message.obj; 7896 7897 mWifiInfo.setBSSID(mLastBssid); 7898 mWifiInfo.setNetworkId(mLastNetworkId); 7899 7900 sendNetworkStateChangeBroadcast(mLastBssid); 7901 transitionTo(mObtainingIpState); 7902 break; 7903 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7904 // Calling handleNetworkDisconnect here is redundant because we might already 7905 // have called it when leaving L2ConnectedState to go to disconnecting state 7906 // or thru other path 7907 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7908 // if they are valid, and only in this case call handleNEtworkDisconnect, 7909 // TODO: this should be fixed for a L MR release 7910 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7911 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7912 // at the chip etc... 7913 if (DBG) log("ConnectModeState: Network connection lost "); 7914 handleNetworkDisconnect(); 7915 transitionTo(mDisconnectedState); 7916 break; 7917 case CMD_PNO_NETWORK_FOUND: 7918 processPnoNetworkFound((ScanResult[])message.obj); 7919 break; 7920 case CMD_RSSI_THRESHOLD_BREACH: 7921 byte curRssi = (byte)message.arg1; 7922 processRssiThreshold(curRssi); 7923 break; 7924 default: 7925 return NOT_HANDLED; 7926 } 7927 return HANDLED; 7928 } 7929 } 7930 7931 private void updateCapabilities(WifiConfiguration config) { 7932 if (config != null) { 7933 if (config.ephemeral) { 7934 mNetworkCapabilities.removeCapability( 7935 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7936 } else { 7937 mNetworkCapabilities.addCapability( 7938 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7939 } 7940 } 7941 mNetworkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7942 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7943 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7944 } 7945 7946 private class WifiNetworkAgent extends NetworkAgent { 7947 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7948 NetworkCapabilities nc, LinkProperties lp, int score) { 7949 super(l, c, TAG, ni, nc, lp, score); 7950 } 7951 protected void unwanted() { 7952 // Ignore if we're not the current networkAgent. 7953 if (this != mNetworkAgent) return; 7954 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7955 + Integer.toString(mWifiInfo.score)); 7956 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7957 } 7958 7959 @Override 7960 protected void networkStatus(int status) { 7961 if (this != mNetworkAgent) return; 7962 if (status == NetworkAgent.INVALID_NETWORK) { 7963 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7964 + Integer.toString(mWifiInfo.score)); 7965 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7966 } else if (status == NetworkAgent.VALID_NETWORK) { 7967 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7968 + Integer.toString(mWifiInfo.score)); 7969 doNetworkStatus(status); 7970 } 7971 } 7972 7973 @Override 7974 protected void saveAcceptUnvalidated(boolean accept) { 7975 if (this != mNetworkAgent) return; 7976 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7977 } 7978 7979 @Override 7980 protected void startPacketKeepalive(Message msg) { 7981 WifiStateMachine.this.sendMessage( 7982 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7983 } 7984 7985 @Override 7986 protected void stopPacketKeepalive(Message msg) { 7987 WifiStateMachine.this.sendMessage( 7988 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7989 } 7990 7991 @Override 7992 protected void setSignalStrengthThresholds(int[] thresholds) { 7993 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 7994 // MAX_VALUE at the start/end of the thresholds array if necessary. 7995 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 7996 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 7997 // re-arm the hardware event. This needs to be done on the state machine thread to 7998 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 7999 // sent in the NetworkCapabilities) must be the one received from the hardware event 8000 // received, or we might skip callbacks. 8001 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 8002 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 8003 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 8004 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 8005 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 8006 Arrays.sort(rssiVals); 8007 byte[] rssiRange = new byte[rssiVals.length]; 8008 for (int i = 0; i < rssiVals.length; i++) { 8009 int val = rssiVals[i]; 8010 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 8011 rssiRange[i] = (byte) val; 8012 } else { 8013 Log.e(TAG, "Illegal values for rssi thresholds " + val); 8014 } 8015 } 8016 // ToDo: Do we quash rssi values in this sorted array which are very close? 8017 mRssiRanges = rssiRange; 8018 //In the degenerate case when the input range has no values, the 8019 //rssiRange will have only 2 values(127, -128), which when armed to 8020 //any chipset can never trigger a rssi breach 8021 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 8022 mWifiInfo.getRssi()); 8023 } 8024 8025 @Override 8026 protected void preventAutomaticReconnect() { 8027 if (this != mNetworkAgent) return; 8028 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 8029 } 8030 } 8031 8032 void unwantedNetwork(int reason) { 8033 sendMessage(CMD_UNWANTED_NETWORK, reason); 8034 } 8035 8036 void doNetworkStatus(int status) { 8037 sendMessage(CMD_NETWORK_STATUS, status); 8038 } 8039 8040 // rfc4186 & rfc4187: 8041 // create Permanent Identity base on IMSI, 8042 // identity = usernam@realm 8043 // with username = prefix | IMSI 8044 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 8045 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 8046 String mcc; 8047 String mnc; 8048 String prefix; 8049 8050 if (imsi == null || imsi.isEmpty()) 8051 return ""; 8052 8053 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 8054 prefix = "1"; 8055 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 8056 prefix = "0"; 8057 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 8058 prefix = "6"; 8059 else // not a valide EapMethod 8060 return ""; 8061 8062 /* extract mcc & mnc from mccMnc */ 8063 if (mccMnc != null && !mccMnc.isEmpty()) { 8064 mcc = mccMnc.substring(0, 3); 8065 mnc = mccMnc.substring(3); 8066 if (mnc.length() == 2) 8067 mnc = "0" + mnc; 8068 } else { 8069 // extract mcc & mnc from IMSI, assume mnc size is 3 8070 mcc = imsi.substring(0, 3); 8071 mnc = imsi.substring(3, 6); 8072 } 8073 8074 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 8075 } 8076 8077 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 8078 if (config == null) 8079 return false; 8080 8081 // We are still seeing a fairly high power consumption triggered by autojoin scans 8082 // Hence do partial scans only for PSK configuration that are roamable since the 8083 // primary purpose of the partial scans is roaming. 8084 // Full badn scans with exponential backoff for the purpose or extended roaming and 8085 // network switching are performed unconditionally. 8086 ScanDetailCache scanDetailCache = 8087 mWifiConfigStore.getScanDetailCache(config); 8088 if (scanDetailCache == null 8089 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 8090 || scanDetailCache.size() > 6) { 8091 //return true but to not trigger the scan 8092 return true; 8093 } 8094 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 8095 ONE_HOUR_MILLI, restrictChannelList); 8096 if (channels != null && channels.size() != 0) { 8097 StringBuilder freqs = new StringBuilder(); 8098 boolean first = true; 8099 for (Integer channel : channels) { 8100 if (!first) 8101 freqs.append(","); 8102 freqs.append(channel.toString()); 8103 first = false; 8104 } 8105 //if (DBG) { 8106 logd("starting scan for " + config.configKey() + " with " + freqs); 8107 //} 8108 // Call wifi native to start the scan 8109 if (startScanNative( 8110 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 8111 freqs.toString())) { 8112 // Only count battery consumption if scan request is accepted 8113 noteScanStart(SCAN_ALARM_SOURCE, null); 8114 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8115 } else { 8116 // used for debug only, mark scan as failed 8117 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8118 } 8119 return true; 8120 } else { 8121 if (DBG) logd("no channels for " + config.configKey()); 8122 return false; 8123 } 8124 } 8125 8126 void clearCurrentConfigBSSID(String dbg) { 8127 // Clear the bssid in the current config's network block 8128 WifiConfiguration config = getCurrentWifiConfiguration(); 8129 if (config == null) 8130 return; 8131 clearConfigBSSID(config, dbg); 8132 } 8133 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8134 if (config == null) 8135 return; 8136 if (DBG) { 8137 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8138 + " config.bssid " + config.BSSID); 8139 } 8140 config.autoJoinBSSID = "any"; 8141 config.BSSID = "any"; 8142 if (DBG) { 8143 logd(dbg + " " + config.SSID 8144 + " nid=" + Integer.toString(config.networkId)); 8145 } 8146 mWifiConfigStore.saveWifiConfigBSSID(config); 8147 } 8148 8149 class L2ConnectedState extends State { 8150 @Override 8151 public void enter() { 8152 mRssiPollToken++; 8153 if (mEnableRssiPolling) { 8154 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8155 } 8156 if (mNetworkAgent != null) { 8157 loge("Have NetworkAgent when entering L2Connected"); 8158 setNetworkDetailedState(DetailedState.DISCONNECTED); 8159 } 8160 setNetworkDetailedState(DetailedState.CONNECTING); 8161 8162 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8163 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8164 } 8165 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8166 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8167 mLinkProperties, 60); 8168 8169 // We must clear the config BSSID, as the wifi chipset may decide to roam 8170 // from this point on and having the BSSID specified in the network block would 8171 // cause the roam to faile and the device to disconnect 8172 clearCurrentConfigBSSID("L2ConnectedState"); 8173 8174 try { 8175 mIpReachabilityMonitor = new IpReachabilityMonitor( 8176 mInterfaceName, 8177 new IpReachabilityMonitor.Callback() { 8178 @Override 8179 public void notifyLost(InetAddress ip, String logMsg) { 8180 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 8181 } 8182 }); 8183 } catch (IllegalArgumentException e) { 8184 Log.wtf("Failed to create IpReachabilityMonitor", e); 8185 } 8186 } 8187 8188 @Override 8189 public void exit() { 8190 if (mIpReachabilityMonitor != null) { 8191 mIpReachabilityMonitor.stop(); 8192 mIpReachabilityMonitor = null; 8193 } 8194 8195 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8196 // Bug: 15347363 8197 // For paranoia's sake, call handleNetworkDisconnect 8198 // only if BSSID is null or last networkId 8199 // is not invalid. 8200 if (DBG) { 8201 StringBuilder sb = new StringBuilder(); 8202 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8203 if (mLastBssid !=null) { 8204 sb.append(" ").append(mLastBssid); 8205 } 8206 } 8207 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8208 handleNetworkDisconnect(); 8209 } 8210 } 8211 8212 @Override 8213 public boolean processMessage(Message message) { 8214 logStateAndMessage(message, getClass().getSimpleName()); 8215 8216 switch (message.what) { 8217 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8218 handlePreDhcpSetup(); 8219 break; 8220 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8221 handlePostDhcpSetup(); 8222 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 8223 if (DBG) log("DHCP successful"); 8224 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 8225 // We advance to mConnectedState because handleIPv4Success will call 8226 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 8227 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 8228 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 8229 if (DBG) { 8230 int count = -1; 8231 WifiConfiguration config = getCurrentWifiConfiguration(); 8232 if (config != null) { 8233 count = config.numConnectionFailures; 8234 } 8235 log("DHCP failure count=" + count); 8236 } 8237 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 8238 // As above, we transition to mDisconnectingState via updateLinkProperties. 8239 } 8240 break; 8241 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8242 handleSuccessfulIpConfiguration(); 8243 sendConnectedState(); 8244 transitionTo(mConnectedState); 8245 break; 8246 case CMD_IP_CONFIGURATION_LOST: 8247 // Get Link layer stats so that we get fresh tx packet counters. 8248 getWifiLinkLayerStats(true); 8249 handleIpConfigurationLost(); 8250 transitionTo(mDisconnectingState); 8251 break; 8252 case CMD_IP_REACHABILITY_LOST: 8253 if (DBG && message.obj != null) log((String) message.obj); 8254 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_REACHABLIITY_LOST); 8255 handleIpReachabilityLost(); 8256 transitionTo(mDisconnectingState); 8257 break; 8258 case CMD_DISCONNECT: 8259 mWifiNative.disconnect(); 8260 transitionTo(mDisconnectingState); 8261 break; 8262 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8263 if (message.arg1 == 1) { 8264 mWifiNative.disconnect(); 8265 mTemporarilyDisconnectWifi = true; 8266 transitionTo(mDisconnectingState); 8267 } 8268 break; 8269 case CMD_SET_OPERATIONAL_MODE: 8270 if (message.arg1 != CONNECT_MODE) { 8271 sendMessage(CMD_DISCONNECT); 8272 deferMessage(message); 8273 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8274 noteWifiDisabledWhileAssociated(); 8275 } 8276 } 8277 mWifiConfigStore. 8278 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8279 break; 8280 case CMD_SET_COUNTRY_CODE: 8281 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8282 deferMessage(message); 8283 break; 8284 case CMD_START_SCAN: 8285 if (DBG) { 8286 logd("CMD_START_SCAN source " + message.arg1 8287 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8288 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8289 + " targetRoamBSSID=" + mTargetRoamBSSID 8290 + " RSSI=" + mWifiInfo.getRssi()); 8291 } 8292 if (message.arg1 == SCAN_ALARM_SOURCE) { 8293 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8294 // not be processed) and restart the scan if neede 8295 if (!getEnableAutoJoinWhenAssociated()) { 8296 return HANDLED; 8297 } 8298 boolean shouldScan = mScreenOn; 8299 8300 if (!checkAndRestartDelayedScan(message.arg2, 8301 shouldScan, 8302 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8303 null, null)) { 8304 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8305 logd("L2Connected CMD_START_SCAN source " 8306 + message.arg1 8307 + " " + message.arg2 + ", " + mDelayedScanCounter 8308 + " -> obsolete"); 8309 return HANDLED; 8310 } 8311 if (mP2pConnected.get()) { 8312 logd("L2Connected CMD_START_SCAN source " 8313 + message.arg1 8314 + " " + message.arg2 + ", " + mDelayedScanCounter 8315 + " ignore because P2P is connected"); 8316 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8317 return HANDLED; 8318 } 8319 boolean tryFullBandScan = false; 8320 boolean restrictChannelList = false; 8321 long now_ms = System.currentTimeMillis(); 8322 if (DBG) { 8323 logd("CMD_START_SCAN with age=" 8324 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8325 + " interval=" + fullBandConnectedTimeIntervalMilli 8326 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8327 } 8328 if (mWifiInfo != null) { 8329 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8330 (now_ms - lastFullBandConnectedTimeMilli) 8331 > fullBandConnectedTimeIntervalMilli) { 8332 if (DBG) { 8333 logd("CMD_START_SCAN try full band scan age=" 8334 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8335 + " interval=" + fullBandConnectedTimeIntervalMilli 8336 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8337 } 8338 tryFullBandScan = true; 8339 } 8340 8341 if (mWifiInfo.txSuccessRate > 8342 mWifiConfigStore.maxTxPacketForFullScans 8343 || mWifiInfo.rxSuccessRate > 8344 mWifiConfigStore.maxRxPacketForFullScans) { 8345 // Too much traffic at the interface, hence no full band scan 8346 if (DBG) { 8347 logd("CMD_START_SCAN " + 8348 "prevent full band scan due to pkt rate"); 8349 } 8350 tryFullBandScan = false; 8351 } 8352 8353 if (mWifiInfo.txSuccessRate > 8354 mWifiConfigStore.maxTxPacketForPartialScans 8355 || mWifiInfo.rxSuccessRate > 8356 mWifiConfigStore.maxRxPacketForPartialScans) { 8357 // Don't scan if lots of packets are being sent 8358 restrictChannelList = true; 8359 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8360 if (DBG) { 8361 logd("CMD_START_SCAN source " + message.arg1 8362 + " ...and ignore scans" 8363 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8364 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8365 } 8366 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8367 return HANDLED; 8368 } 8369 } 8370 } 8371 8372 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8373 if (DBG) { 8374 logd("CMD_START_SCAN full=" + 8375 tryFullBandScan); 8376 } 8377 if (currentConfiguration != null) { 8378 if (fullBandConnectedTimeIntervalMilli 8379 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8380 // Sanity 8381 fullBandConnectedTimeIntervalMilli 8382 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8383 } 8384 if (tryFullBandScan) { 8385 lastFullBandConnectedTimeMilli = now_ms; 8386 if (fullBandConnectedTimeIntervalMilli 8387 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8388 // Increase the interval 8389 fullBandConnectedTimeIntervalMilli 8390 = fullBandConnectedTimeIntervalMilli 8391 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8392 8393 if (DBG) { 8394 logd("CMD_START_SCAN bump interval =" 8395 + fullBandConnectedTimeIntervalMilli); 8396 } 8397 } 8398 handleScanRequest( 8399 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8400 } else { 8401 if (!startScanForConfiguration( 8402 currentConfiguration, restrictChannelList)) { 8403 if (DBG) { 8404 logd("starting scan, " + 8405 " did not find channels -> full"); 8406 } 8407 lastFullBandConnectedTimeMilli = now_ms; 8408 if (fullBandConnectedTimeIntervalMilli 8409 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8410 // Increase the interval 8411 fullBandConnectedTimeIntervalMilli 8412 = fullBandConnectedTimeIntervalMilli 8413 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8414 8415 if (DBG) { 8416 logd("CMD_START_SCAN bump interval =" 8417 + fullBandConnectedTimeIntervalMilli); 8418 } 8419 } 8420 handleScanRequest( 8421 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8422 } 8423 } 8424 8425 } else { 8426 logd("CMD_START_SCAN : connected mode and no configuration"); 8427 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8428 } 8429 } else { 8430 // Not scan alarm source 8431 return NOT_HANDLED; 8432 } 8433 break; 8434 /* Ignore connection to same network */ 8435 case WifiManager.CONNECT_NETWORK: 8436 int netId = message.arg1; 8437 if (mWifiInfo.getNetworkId() == netId) { 8438 break; 8439 } 8440 return NOT_HANDLED; 8441 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8442 break; 8443 case CMD_RSSI_POLL: 8444 if (message.arg1 == mRssiPollToken) { 8445 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8446 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8447 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8448 if (stats != null) { 8449 // Sanity check the results provided by driver 8450 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8451 && (stats.rssi_mgmt == 0 8452 || stats.beacon_rx == 0)) { 8453 stats = null; 8454 } 8455 } 8456 // Get Info and continue polling 8457 fetchRssiLinkSpeedAndFrequencyNative(); 8458 calculateWifiScore(stats); 8459 } 8460 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8461 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8462 8463 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8464 } else { 8465 // Polling has completed 8466 } 8467 break; 8468 case CMD_ENABLE_RSSI_POLL: 8469 cleanWifiScore(); 8470 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8471 mEnableRssiPolling = (message.arg1 == 1); 8472 } else { 8473 mEnableRssiPolling = false; 8474 } 8475 mRssiPollToken++; 8476 if (mEnableRssiPolling) { 8477 // First poll 8478 fetchRssiLinkSpeedAndFrequencyNative(); 8479 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8480 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8481 } 8482 break; 8483 case WifiManager.RSSI_PKTCNT_FETCH: 8484 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8485 fetchRssiLinkSpeedAndFrequencyNative(); 8486 info.rssi = mWifiInfo.getRssi(); 8487 fetchPktcntNative(info); 8488 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8489 break; 8490 case CMD_DELAYED_NETWORK_DISCONNECT: 8491 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8492 8493 // Ignore if we are not debouncing 8494 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8495 + message.arg1); 8496 return HANDLED; 8497 } else { 8498 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8499 + message.arg1); 8500 8501 linkDebouncing = false; 8502 // If we are still debouncing while this message comes, 8503 // it means we were not able to reconnect within the alloted time 8504 // = LINK_FLAPPING_DEBOUNCE_MSEC 8505 // and thus, trigger a real disconnect 8506 handleNetworkDisconnect(); 8507 transitionTo(mDisconnectedState); 8508 } 8509 break; 8510 case CMD_ASSOCIATED_BSSID: 8511 if ((String) message.obj == null) { 8512 logw("Associated command w/o BSSID"); 8513 break; 8514 } 8515 mLastBssid = (String) message.obj; 8516 if (mLastBssid != null 8517 && (mWifiInfo.getBSSID() == null 8518 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8519 mWifiInfo.setBSSID((String) message.obj); 8520 sendNetworkStateChangeBroadcast(mLastBssid); 8521 } 8522 break; 8523 default: 8524 return NOT_HANDLED; 8525 } 8526 8527 return HANDLED; 8528 } 8529 } 8530 8531 class ObtainingIpState extends State { 8532 @Override 8533 public void enter() { 8534 if (DBG) { 8535 String key = ""; 8536 if (getCurrentWifiConfiguration() != null) { 8537 key = getCurrentWifiConfiguration().configKey(); 8538 } 8539 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8540 + " " + key + " " 8541 + " roam=" + mAutoRoaming 8542 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8543 + " watchdog= " + obtainingIpWatchdogCount); 8544 } 8545 8546 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8547 // We might still be roaming 8548 linkDebouncing = false; 8549 8550 // Send event to CM & network change broadcast 8551 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8552 8553 // We must clear the config BSSID, as the wifi chipset may decide to roam 8554 // from this point on and having the BSSID specified in the network block would 8555 // cause the roam to faile and the device to disconnect 8556 clearCurrentConfigBSSID("ObtainingIpAddress"); 8557 8558 try { 8559 mNwService.enableIpv6(mInterfaceName); 8560 } catch (RemoteException re) { 8561 loge("Failed to enable IPv6: " + re); 8562 } catch (IllegalStateException e) { 8563 loge("Failed to enable IPv6: " + e); 8564 } 8565 8566 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8567 if (isRoaming()) { 8568 renewDhcp(); 8569 } else { 8570 // Remove any IP address on the interface in case we're switching from static 8571 // IP configuration to DHCP. This is safe because if we get here when not 8572 // roaming, we don't have a usable address. 8573 clearIPv4Address(mInterfaceName); 8574 startDhcp(); 8575 } 8576 obtainingIpWatchdogCount++; 8577 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8578 // Get Link layer stats so as we get fresh tx packet counters 8579 getWifiLinkLayerStats(true); 8580 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8581 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8582 } else { 8583 // stop any running dhcp before assigning static IP 8584 stopDhcp(); 8585 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8586 mLastNetworkId); 8587 if (config.ipAddress == null) { 8588 logd("Static IP lacks address"); 8589 sendMessage(CMD_STATIC_IP_FAILURE); 8590 } else { 8591 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8592 ifcg.setLinkAddress(config.ipAddress); 8593 ifcg.setInterfaceUp(); 8594 try { 8595 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8596 if (DBG) log("Static IP configuration succeeded"); 8597 DhcpResults dhcpResults = new DhcpResults(config); 8598 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8599 } catch (RemoteException re) { 8600 loge("Static IP configuration failed: " + re); 8601 sendMessage(CMD_STATIC_IP_FAILURE); 8602 } catch (IllegalStateException e) { 8603 loge("Static IP configuration failed: " + e); 8604 sendMessage(CMD_STATIC_IP_FAILURE); 8605 } 8606 } 8607 } 8608 } 8609 @Override 8610 public boolean processMessage(Message message) { 8611 logStateAndMessage(message, getClass().getSimpleName()); 8612 8613 switch(message.what) { 8614 case CMD_STATIC_IP_SUCCESS: 8615 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8616 break; 8617 case CMD_STATIC_IP_FAILURE: 8618 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8619 break; 8620 case CMD_AUTO_CONNECT: 8621 case CMD_AUTO_ROAM: 8622 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8623 break; 8624 case WifiManager.SAVE_NETWORK: 8625 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8626 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8627 deferMessage(message); 8628 break; 8629 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8630 case CMD_SET_HIGH_PERF_MODE: 8631 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8632 deferMessage(message); 8633 break; 8634 /* Defer scan request since we should not switch to other channels at DHCP */ 8635 case CMD_START_SCAN: 8636 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8637 deferMessage(message); 8638 break; 8639 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8640 if (message.arg1 == obtainingIpWatchdogCount) { 8641 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8642 + obtainingIpWatchdogCount); 8643 handleIpConfigurationLost(); 8644 transitionTo(mDisconnectingState); 8645 break; 8646 } 8647 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8648 break; 8649 default: 8650 return NOT_HANDLED; 8651 } 8652 return HANDLED; 8653 } 8654 } 8655 8656 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8657 // sets mPoorNetworkDetectionEnabled to false. 8658 class VerifyingLinkState extends State { 8659 @Override 8660 public void enter() { 8661 log(getName() + " enter"); 8662 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8663 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8664 sendNetworkStateChangeBroadcast(mLastBssid); 8665 // End roaming 8666 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8667 } 8668 @Override 8669 public boolean processMessage(Message message) { 8670 logStateAndMessage(message, getClass().getSimpleName()); 8671 8672 switch (message.what) { 8673 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8674 // Stay here 8675 log(getName() + " POOR_LINK_DETECTED: no transition"); 8676 break; 8677 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8678 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8679 sendConnectedState(); 8680 transitionTo(mConnectedState); 8681 break; 8682 default: 8683 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8684 return NOT_HANDLED; 8685 } 8686 return HANDLED; 8687 } 8688 } 8689 8690 private void sendConnectedState() { 8691 // If this network was explicitly selected by the user, evaluate whether to call 8692 // explicitlySelected() so the system can treat it appropriately. 8693 WifiConfiguration config = getCurrentWifiConfiguration(); 8694 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8695 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8696 if (DBG) { 8697 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8698 } 8699 if (prompt) { 8700 // Selected by the user via Settings or QuickSettings. If this network has Internet 8701 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8702 // really want to switch, or has already confirmed and selected "Don't ask again". 8703 if (DBG) { 8704 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8705 } 8706 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8707 } 8708 } 8709 8710 setNetworkDetailedState(DetailedState.CONNECTED); 8711 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8712 sendNetworkStateChangeBroadcast(mLastBssid); 8713 } 8714 8715 class RoamingState extends State { 8716 boolean mAssociated; 8717 @Override 8718 public void enter() { 8719 if (DBG) { 8720 log("RoamingState Enter" 8721 + " mScreenOn=" + mScreenOn ); 8722 } 8723 setScanAlarm(false); 8724 8725 // Make sure we disconnect if roaming fails 8726 roamWatchdogCount++; 8727 logd("Start Roam Watchdog " + roamWatchdogCount); 8728 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8729 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8730 mAssociated = false; 8731 } 8732 @Override 8733 public boolean processMessage(Message message) { 8734 logStateAndMessage(message, getClass().getSimpleName()); 8735 WifiConfiguration config; 8736 switch (message.what) { 8737 case CMD_IP_CONFIGURATION_LOST: 8738 config = getCurrentWifiConfiguration(); 8739 if (config != null) { 8740 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8741 mWifiConfigStore.noteRoamingFailure(config, 8742 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8743 } 8744 return NOT_HANDLED; 8745 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8746 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8747 return HANDLED; 8748 case CMD_UNWANTED_NETWORK: 8749 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8750 return HANDLED; 8751 case CMD_SET_OPERATIONAL_MODE: 8752 if (message.arg1 != CONNECT_MODE) { 8753 deferMessage(message); 8754 } 8755 break; 8756 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8757 /** 8758 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8759 * before NETWORK_DISCONNECTION_EVENT 8760 * And there is an associated BSSID corresponding to our target BSSID, then 8761 * we have missed the network disconnection, transition to mDisconnectedState 8762 * and handle the rest of the events there. 8763 */ 8764 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8765 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8766 || stateChangeResult.state == SupplicantState.INACTIVE 8767 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8768 if (DBG) { 8769 log("STATE_CHANGE_EVENT in roaming state " 8770 + stateChangeResult.toString() ); 8771 } 8772 if (stateChangeResult.BSSID != null 8773 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8774 handleNetworkDisconnect(); 8775 transitionTo(mDisconnectedState); 8776 } 8777 } 8778 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8779 // We completed the layer2 roaming part 8780 mAssociated = true; 8781 if (stateChangeResult.BSSID != null) { 8782 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8783 } 8784 } 8785 break; 8786 case CMD_ROAM_WATCHDOG_TIMER: 8787 if (roamWatchdogCount == message.arg1) { 8788 if (DBG) log("roaming watchdog! -> disconnect"); 8789 mRoamFailCount++; 8790 handleNetworkDisconnect(); 8791 mWifiNative.disconnect(); 8792 transitionTo(mDisconnectedState); 8793 } 8794 break; 8795 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8796 if (mAssociated) { 8797 if (DBG) log("roaming and Network connection established"); 8798 mLastNetworkId = message.arg1; 8799 mLastBssid = (String) message.obj; 8800 mWifiInfo.setBSSID(mLastBssid); 8801 mWifiInfo.setNetworkId(mLastNetworkId); 8802 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8803 sendNetworkStateChangeBroadcast(mLastBssid); 8804 transitionTo(mObtainingIpState); 8805 } else { 8806 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8807 } 8808 break; 8809 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8810 // Throw away but only if it corresponds to the network we're roaming to 8811 String bssid = (String)message.obj; 8812 if (true) { 8813 String target = ""; 8814 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8815 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8816 + " BSSID=" + bssid 8817 + " target=" + target); 8818 } 8819 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8820 handleNetworkDisconnect(); 8821 transitionTo(mDisconnectedState); 8822 } 8823 break; 8824 case WifiMonitor.SSID_TEMP_DISABLED: 8825 // Auth error while roaming 8826 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8827 + " id=" + Integer.toString(message.arg1) 8828 + " isRoaming=" + isRoaming() 8829 + " roam=" + Integer.toString(mAutoRoaming)); 8830 if (message.arg1 == mLastNetworkId) { 8831 config = getCurrentWifiConfiguration(); 8832 if (config != null) { 8833 mWifiLogger.captureBugReportData( 8834 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8835 mWifiConfigStore.noteRoamingFailure(config, 8836 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8837 } 8838 handleNetworkDisconnect(); 8839 transitionTo(mDisconnectingState); 8840 } 8841 return NOT_HANDLED; 8842 case CMD_START_SCAN: 8843 deferMessage(message); 8844 break; 8845 default: 8846 return NOT_HANDLED; 8847 } 8848 return HANDLED; 8849 } 8850 8851 @Override 8852 public void exit() { 8853 logd("WifiStateMachine: Leaving Roaming state"); 8854 } 8855 } 8856 8857 class ConnectedState extends State { 8858 @Override 8859 public void enter() { 8860 String address; 8861 updateDefaultRouteMacAddress(1000); 8862 if (DBG) { 8863 log("Enter ConnectedState " 8864 + " mScreenOn=" + mScreenOn 8865 + " scanperiod=" 8866 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8867 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8868 + mWifiConfigStore.enableHalBasedPno.get() 8869 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8870 } 8871 if (mScreenOn 8872 && getEnableAutoJoinWhenAssociated()) { 8873 if (useHalBasedAutoJoinOffload()) { 8874 startGScanConnectedModeOffload("connectedEnter"); 8875 } else { 8876 // restart scan alarm 8877 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8878 null, null); 8879 } 8880 } 8881 registerConnected(); 8882 lastConnectAttemptTimestamp = 0; 8883 targetWificonfiguration = null; 8884 // Paranoia 8885 linkDebouncing = false; 8886 8887 // Not roaming anymore 8888 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8889 8890 if (testNetworkDisconnect) { 8891 testNetworkDisconnectCounter++; 8892 logd("ConnectedState Enter start disconnect test " + 8893 testNetworkDisconnectCounter); 8894 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8895 testNetworkDisconnectCounter, 0), 15000); 8896 } 8897 8898 // Reenable all networks, allow for hidden networks to be scanned 8899 mWifiConfigStore.enableAllNetworks(); 8900 8901 mLastDriverRoamAttempt = 0; 8902 8903 //startLazyRoam(); 8904 } 8905 @Override 8906 public boolean processMessage(Message message) { 8907 WifiConfiguration config = null; 8908 logStateAndMessage(message, getClass().getSimpleName()); 8909 8910 switch (message.what) { 8911 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8912 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8913 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8914 return HANDLED; 8915 } 8916 /* If we are still in Disconnected state after having discovered a valid 8917 * network this means autojoin didnt managed to associate to the network, 8918 * then restart PNO so as we will try associating to it again. 8919 */ 8920 if (useHalBasedAutoJoinOffload()) { 8921 if (mGScanStartTimeMilli == 0) { 8922 // If offload is not started, then start it... 8923 startGScanConnectedModeOffload("connectedRestart"); 8924 } else { 8925 // If offload is already started, then check if we need to increase 8926 // the scan period and restart the Gscan 8927 long now = System.currentTimeMillis(); 8928 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8929 && ((now - mGScanStartTimeMilli) 8930 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8931 && (mGScanPeriodMilli 8932 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8933 { 8934 startConnectedGScan("Connected restart gscan"); 8935 } 8936 } 8937 } 8938 break; 8939 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8940 updateAssociatedScanPermission(); 8941 break; 8942 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8943 if (DBG) log("Watchdog reports poor link"); 8944 transitionTo(mVerifyingLinkState); 8945 break; 8946 case CMD_UNWANTED_NETWORK: 8947 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8948 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8949 mWifiNative.disconnect(); 8950 transitionTo(mDisconnectingState); 8951 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8952 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8953 config = getCurrentWifiConfiguration(); 8954 if (config != null) { 8955 // Disable autojoin 8956 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8957 config.validatedInternetAccess = false; 8958 // Clear last-selected status, as being last-selected also avoids 8959 // disabling auto-join. 8960 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8961 mWifiConfigStore.setLastSelectedConfiguration( 8962 WifiConfiguration.INVALID_NETWORK_ID); 8963 } 8964 } 8965 config.numNoInternetAccessReports += 1; 8966 config.dirty = true; 8967 mWifiConfigStore.writeKnownNetworkHistory(false); 8968 } 8969 } 8970 return HANDLED; 8971 case CMD_NETWORK_STATUS: 8972 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8973 config = getCurrentWifiConfiguration(); 8974 if (config != null) { 8975 if (!config.validatedInternetAccess 8976 || config.numNoInternetAccessReports != 0) { 8977 config.dirty = true; 8978 } 8979 // re-enable autojoin 8980 config.numNoInternetAccessReports = 0; 8981 config.validatedInternetAccess = true; 8982 mWifiConfigStore.writeKnownNetworkHistory(false); 8983 } 8984 } 8985 return HANDLED; 8986 case CMD_ACCEPT_UNVALIDATED: 8987 boolean accept = (message.arg1 != 0); 8988 config = getCurrentWifiConfiguration(); 8989 if (config != null) { 8990 config.noInternetAccessExpected = accept; 8991 } 8992 return HANDLED; 8993 case CMD_TEST_NETWORK_DISCONNECT: 8994 // Force a disconnect 8995 if (message.arg1 == testNetworkDisconnectCounter) { 8996 mWifiNative.disconnect(); 8997 } 8998 break; 8999 case CMD_ASSOCIATED_BSSID: 9000 // ASSOCIATING to a new BSSID while already connected, indicates 9001 // that driver is roaming 9002 mLastDriverRoamAttempt = System.currentTimeMillis(); 9003 String toBSSID = (String)message.obj; 9004 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 9005 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 9006 } 9007 return NOT_HANDLED; 9008 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9009 long lastRoam = 0; 9010 if (mLastDriverRoamAttempt != 0) { 9011 // Calculate time since last driver roam attempt 9012 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 9013 mLastDriverRoamAttempt = 0; 9014 } 9015 if (unexpectedDisconnectedReason(message.arg2)) { 9016 mWifiLogger.captureBugReportData( 9017 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 9018 } 9019 config = getCurrentWifiConfiguration(); 9020 if (mScreenOn 9021 && !linkDebouncing 9022 && config != null 9023 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 9024 && !mWifiConfigStore.isLastSelectedConfiguration(config) 9025 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 9026 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 9027 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 9028 && mWifiInfo.getRssi() > 9029 WifiConfiguration.BAD_RSSI_24) 9030 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 9031 && mWifiInfo.getRssi() > 9032 WifiConfiguration.BAD_RSSI_5))) { 9033 // Start de-bouncing the L2 disconnection: 9034 // this L2 disconnection might be spurious. 9035 // Hence we allow 7 seconds for the state machine to try 9036 // to reconnect, go thru the 9037 // roaming cycle and enter Obtaining IP address 9038 // before signalling the disconnect to ConnectivityService and L3 9039 startScanForConfiguration(getCurrentWifiConfiguration(), false); 9040 linkDebouncing = true; 9041 9042 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 9043 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 9044 if (DBG) { 9045 log("NETWORK_DISCONNECTION_EVENT in connected state" 9046 + " BSSID=" + mWifiInfo.getBSSID() 9047 + " RSSI=" + mWifiInfo.getRssi() 9048 + " freq=" + mWifiInfo.getFrequency() 9049 + " reason=" + message.arg2 9050 + " -> debounce"); 9051 } 9052 return HANDLED; 9053 } else { 9054 if (DBG) { 9055 int ajst = -1; 9056 if (config != null) ajst = config.autoJoinStatus; 9057 log("NETWORK_DISCONNECTION_EVENT in connected state" 9058 + " BSSID=" + mWifiInfo.getBSSID() 9059 + " RSSI=" + mWifiInfo.getRssi() 9060 + " freq=" + mWifiInfo.getFrequency() 9061 + " was debouncing=" + linkDebouncing 9062 + " reason=" + message.arg2 9063 + " ajst=" + ajst); 9064 } 9065 } 9066 break; 9067 case CMD_AUTO_ROAM: 9068 // Clear the driver roam indication since we are attempting a framework roam 9069 mLastDriverRoamAttempt = 0; 9070 9071 /* Connect command coming from auto-join */ 9072 ScanResult candidate = (ScanResult)message.obj; 9073 String bssid = "any"; 9074 if (candidate != null && candidate.is5GHz()) { 9075 // Only lock BSSID for 5GHz networks 9076 bssid = candidate.BSSID; 9077 } 9078 int netId = mLastNetworkId; 9079 config = getCurrentWifiConfiguration(); 9080 9081 9082 if (config == null) { 9083 loge("AUTO_ROAM and no config, bail out..."); 9084 break; 9085 } 9086 9087 logd("CMD_AUTO_ROAM sup state " 9088 + mSupplicantStateTracker.getSupplicantStateName() 9089 + " my state " + getCurrentState().getName() 9090 + " nid=" + Integer.toString(netId) 9091 + " config " + config.configKey() 9092 + " roam=" + Integer.toString(message.arg2) 9093 + " to " + bssid 9094 + " targetRoamBSSID " + mTargetRoamBSSID); 9095 9096 /* Save the BSSID so as to lock it @ firmware */ 9097 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 9098 logd("AUTO_ROAM nothing to do"); 9099 // Same BSSID, nothing to do 9100 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9101 break; 9102 }; 9103 9104 // Make sure the network is enabled, since supplicant will not re-enable it 9105 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 9106 9107 if (deferForUserInput(message, netId, false)) { 9108 break; 9109 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 9110 WifiConfiguration.USER_BANNED) { 9111 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9112 WifiManager.NOT_AUTHORIZED); 9113 break; 9114 } 9115 9116 boolean ret = false; 9117 if (mLastNetworkId != netId) { 9118 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 9119 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 9120 ret = true; 9121 } 9122 } else { 9123 ret = mWifiNative.reassociate(); 9124 } 9125 if (ret) { 9126 lastConnectAttemptTimestamp = System.currentTimeMillis(); 9127 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 9128 9129 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 9130 mAutoRoaming = message.arg2; 9131 transitionTo(mRoamingState); 9132 9133 } else { 9134 loge("Failed to connect config: " + config + " netId: " + netId); 9135 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9136 WifiManager.ERROR); 9137 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9138 break; 9139 } 9140 break; 9141 case CMD_START_IP_PACKET_OFFLOAD: { 9142 int slot = message.arg1; 9143 int intervalSeconds = message.arg2; 9144 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9145 byte[] dstMac; 9146 try { 9147 InetAddress gateway = RouteInfo.selectBestRoute( 9148 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9149 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9150 dstMac = macAddressFromString(dstMacStr); 9151 } catch (NullPointerException|IllegalArgumentException e) { 9152 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9153 mNetworkAgent.onPacketKeepaliveEvent(slot, 9154 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9155 break; 9156 } 9157 pkt.dstMac = dstMac; 9158 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9159 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9160 break; 9161 } 9162 case CMD_START_RSSI_MONITORING_OFFLOAD: 9163 byte currRssi = (byte)message.arg1; 9164 processRssiThreshold(currRssi); 9165 break; 9166 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 9167 stopRssiMonitoringOffload(); 9168 break; 9169 default: 9170 return NOT_HANDLED; 9171 } 9172 return HANDLED; 9173 } 9174 9175 @Override 9176 public void exit() { 9177 logd("WifiStateMachine: Leaving Connected state"); 9178 setScanAlarm(false); 9179 mLastDriverRoamAttempt = 0; 9180 9181 stopLazyRoam(); 9182 9183 mWhiteListedSsids = null; 9184 } 9185 } 9186 9187 class DisconnectingState extends State { 9188 9189 @Override 9190 public void enter() { 9191 9192 if (PDBG) { 9193 logd(" Enter DisconnectingState State scan interval " 9194 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9195 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9196 + " screenOn=" + mScreenOn); 9197 } 9198 9199 // Make sure we disconnect: we enter this state prior to connecting to a new 9200 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9201 // event which in this case will be indicating that supplicant started to associate. 9202 // In some cases supplicant doesn't ignore the connect requests (it might not 9203 // find the target SSID in its cache), 9204 // Therefore we end up stuck that state, hence the need for the watchdog. 9205 disconnectingWatchdogCount++; 9206 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9207 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9208 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9209 } 9210 9211 @Override 9212 public boolean processMessage(Message message) { 9213 logStateAndMessage(message, getClass().getSimpleName()); 9214 switch (message.what) { 9215 case CMD_SET_OPERATIONAL_MODE: 9216 if (message.arg1 != CONNECT_MODE) { 9217 deferMessage(message); 9218 } 9219 break; 9220 case CMD_START_SCAN: 9221 deferMessage(message); 9222 return HANDLED; 9223 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9224 if (disconnectingWatchdogCount == message.arg1) { 9225 if (DBG) log("disconnecting watchdog! -> disconnect"); 9226 handleNetworkDisconnect(); 9227 transitionTo(mDisconnectedState); 9228 } 9229 break; 9230 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9231 /** 9232 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9233 * we have missed the network disconnection, transition to mDisconnectedState 9234 * and handle the rest of the events there 9235 */ 9236 deferMessage(message); 9237 handleNetworkDisconnect(); 9238 transitionTo(mDisconnectedState); 9239 break; 9240 default: 9241 return NOT_HANDLED; 9242 } 9243 return HANDLED; 9244 } 9245 } 9246 9247 class DisconnectedState extends State { 9248 @Override 9249 public void enter() { 9250 // We dont scan frequently if this is a temporary disconnect 9251 // due to p2p 9252 if (mTemporarilyDisconnectWifi) { 9253 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9254 return; 9255 } 9256 9257 if (PDBG) { 9258 logd(" Enter DisconnectedState scan interval " 9259 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9260 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9261 + " screenOn=" + mScreenOn 9262 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9263 + mWifiConfigStore.enableHalBasedPno.get()); 9264 } 9265 9266 /** clear the roaming state, if we were roaming, we failed */ 9267 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 9268 9269 if (useHalBasedAutoJoinOffload()) { 9270 startGScanDisconnectedModeOffload("disconnectedEnter"); 9271 } else { 9272 if (mScreenOn) { 9273 /** 9274 * screen lit and => delayed timer 9275 */ 9276 startDelayedScan(500, null, null); 9277 } else { 9278 /** 9279 * screen dark and PNO supported => scan alarm disabled 9280 */ 9281 if (mBackgroundScanSupported) { 9282 /* If a regular scan result is pending, do not initiate background 9283 * scan until the scan results are returned. This is needed because 9284 * initiating a background scan will cancel the regular scan and 9285 * scan results will not be returned until background scanning is 9286 * cleared 9287 */ 9288 if (!mIsScanOngoing) { 9289 enableBackgroundScan(true); 9290 } 9291 } else { 9292 setScanAlarm(true); 9293 } 9294 } 9295 } 9296 9297 /** 9298 * If we have no networks saved, the supplicant stops doing the periodic scan. 9299 * The scans are useful to notify the user of the presence of an open network. 9300 * Note that these are not wake up scans. 9301 */ 9302 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9303 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9304 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9305 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9306 } 9307 9308 mDisconnectedTimeStamp = System.currentTimeMillis(); 9309 mDisconnectedPnoAlarmCount = 0; 9310 } 9311 @Override 9312 public boolean processMessage(Message message) { 9313 boolean ret = HANDLED; 9314 9315 logStateAndMessage(message, getClass().getSimpleName()); 9316 9317 switch (message.what) { 9318 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9319 if (mP2pConnected.get()) break; 9320 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9321 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9322 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9323 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9324 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9325 } 9326 break; 9327 case WifiManager.FORGET_NETWORK: 9328 case CMD_REMOVE_NETWORK: 9329 case CMD_REMOVE_APP_CONFIGURATIONS: 9330 case CMD_REMOVE_USER_CONFIGURATIONS: 9331 // Set up a delayed message here. After the forget/remove is handled 9332 // the handled delayed message will determine if there is a need to 9333 // scan and continue 9334 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9335 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9336 ret = NOT_HANDLED; 9337 break; 9338 case CMD_SET_OPERATIONAL_MODE: 9339 if (message.arg1 != CONNECT_MODE) { 9340 mOperationalMode = message.arg1; 9341 9342 mWifiConfigStore.disableAllNetworks(); 9343 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9344 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9345 setWifiState(WIFI_STATE_DISABLED); 9346 } 9347 transitionTo(mScanModeState); 9348 } 9349 mWifiConfigStore. 9350 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9351 break; 9352 /* Ignore network disconnect */ 9353 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9354 break; 9355 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9356 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9357 if (DBG) { 9358 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9359 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9360 + " debouncing=" + linkDebouncing); 9361 } 9362 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9363 /* ConnectModeState does the rest of the handling */ 9364 ret = NOT_HANDLED; 9365 break; 9366 case CMD_START_SCAN: 9367 if (!checkOrDeferScanAllowed(message)) { 9368 // The scan request was rescheduled 9369 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9370 return HANDLED; 9371 } 9372 if (message.arg1 == SCAN_ALARM_SOURCE) { 9373 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9374 // not be processed) and restart the scan 9375 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9376 if (mP2pConnected.get()) { 9377 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9378 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9379 period); 9380 } 9381 if (!checkAndRestartDelayedScan(message.arg2, 9382 true, period, null, null)) { 9383 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9384 logd("Disconnected CMD_START_SCAN source " 9385 + message.arg1 9386 + " " + message.arg2 + ", " + mDelayedScanCounter 9387 + " -> obsolete"); 9388 return HANDLED; 9389 } 9390 /* Disable background scan temporarily during a regular scan */ 9391 enableBackgroundScan(false); 9392 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9393 ret = HANDLED; 9394 } else { 9395 9396 /* 9397 * The SCAN request is not handled in this state and 9398 * would eventually might/will get handled in the 9399 * parent's state. The PNO, if already enabled had to 9400 * get disabled before the SCAN trigger. Hence, stop 9401 * the PNO if already enabled in this state, though the 9402 * SCAN request is not handled(PNO disable before the 9403 * SCAN trigger in any other state is not the right 9404 * place to issue). 9405 */ 9406 9407 enableBackgroundScan(false); 9408 ret = NOT_HANDLED; 9409 } 9410 break; 9411 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9412 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9413 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9414 return HANDLED; 9415 } 9416 /* If we are still in Disconnected state after having discovered a valid 9417 * network this means autojoin didnt managed to associate to the network, 9418 * then restart PNO so as we will try associating to it again. 9419 */ 9420 if (useHalBasedAutoJoinOffload()) { 9421 if (mGScanStartTimeMilli == 0) { 9422 // If offload is not started, then start it... 9423 startGScanDisconnectedModeOffload("disconnectedRestart"); 9424 } else { 9425 // If offload is already started, then check if we need to increase 9426 // the scan period and restart the Gscan 9427 long now = System.currentTimeMillis(); 9428 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9429 && ((now - mGScanStartTimeMilli) 9430 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9431 && (mGScanPeriodMilli 9432 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9433 { 9434 startDisconnectedGScan("disconnected restart gscan"); 9435 } 9436 } 9437 } else { 9438 // If we are still disconnected for a short while after having found a 9439 // network thru PNO, then something went wrong, and for some reason we 9440 // couldn't join this network. 9441 // It might be due to a SW bug in supplicant or the wifi stack, or an 9442 // interoperability issue, or we try to join a bad bss and failed 9443 // In that case we want to restart pno so as to make sure that we will 9444 // attempt again to join that network. 9445 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9446 enableBackgroundScan(false); 9447 enableBackgroundScan(true); 9448 } 9449 return HANDLED; 9450 } 9451 break; 9452 case WifiMonitor.SCAN_RESULTS_EVENT: 9453 case WifiMonitor.SCAN_FAILED_EVENT: 9454 /* Re-enable background scan when a pending scan result is received */ 9455 if (!mScreenOn && mIsScanOngoing 9456 && mBackgroundScanSupported 9457 && !useHalBasedAutoJoinOffload()) { 9458 enableBackgroundScan(true); 9459 } else if (!mScreenOn 9460 && !mIsScanOngoing 9461 && mBackgroundScanSupported 9462 && !useHalBasedAutoJoinOffload()) { 9463 // We receive scan results from legacy PNO, hence restart the PNO alarm 9464 int delay; 9465 if (mDisconnectedPnoAlarmCount < 1) { 9466 delay = 30 * 1000; 9467 } else if (mDisconnectedPnoAlarmCount < 3) { 9468 delay = 60 * 1000; 9469 } else { 9470 delay = 360 * 1000; 9471 } 9472 mDisconnectedPnoAlarmCount++; 9473 if (VDBG) { 9474 logd("Starting PNO alarm " + delay); 9475 } 9476 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9477 System.currentTimeMillis() + delay, 9478 mPnoIntent); 9479 } 9480 /* Handled in parent state */ 9481 ret = NOT_HANDLED; 9482 break; 9483 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9484 NetworkInfo info = (NetworkInfo) message.obj; 9485 mP2pConnected.set(info.isConnected()); 9486 if (mP2pConnected.get()) { 9487 int defaultInterval = mContext.getResources().getInteger( 9488 R.integer.config_wifi_scan_interval_p2p_connected); 9489 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9490 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9491 defaultInterval); 9492 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9493 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9494 if (DBG) log("Turn on scanning after p2p disconnected"); 9495 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9496 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9497 } else { 9498 // If P2P is not connected and there are saved networks, then restart 9499 // scanning at the normal period. This is necessary because scanning might 9500 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9501 // was set to zero. 9502 if (useHalBasedAutoJoinOffload()) { 9503 startGScanDisconnectedModeOffload("p2pRestart"); 9504 } else { 9505 startDelayedScan( 9506 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9507 null, null); 9508 } 9509 } 9510 break; 9511 case CMD_RECONNECT: 9512 case CMD_REASSOCIATE: 9513 if (mTemporarilyDisconnectWifi) { 9514 // Drop a third party reconnect/reassociate if STA is 9515 // temporarily disconnected for p2p 9516 break; 9517 } else { 9518 // ConnectModeState handles it 9519 ret = NOT_HANDLED; 9520 } 9521 break; 9522 case CMD_SCREEN_STATE_CHANGED: 9523 handleScreenStateChanged(message.arg1 != 0); 9524 break; 9525 default: 9526 ret = NOT_HANDLED; 9527 } 9528 return ret; 9529 } 9530 9531 @Override 9532 public void exit() { 9533 mDisconnectedPnoAlarmCount = 0; 9534 /* No need for a background scan upon exit from a disconnected state */ 9535 enableBackgroundScan(false); 9536 setScanAlarm(false); 9537 mAlarmManager.cancel(mPnoIntent); 9538 } 9539 } 9540 9541 class WpsRunningState extends State { 9542 // Tracks the source to provide a reply 9543 private Message mSourceMessage; 9544 @Override 9545 public void enter() { 9546 mSourceMessage = Message.obtain(getCurrentMessage()); 9547 } 9548 @Override 9549 public boolean processMessage(Message message) { 9550 logStateAndMessage(message, getClass().getSimpleName()); 9551 9552 switch (message.what) { 9553 case WifiMonitor.WPS_SUCCESS_EVENT: 9554 // Ignore intermediate success, wait for full connection 9555 break; 9556 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9557 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9558 mSourceMessage.recycle(); 9559 mSourceMessage = null; 9560 deferMessage(message); 9561 transitionTo(mDisconnectedState); 9562 break; 9563 case WifiMonitor.WPS_OVERLAP_EVENT: 9564 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9565 WifiManager.WPS_OVERLAP_ERROR); 9566 mSourceMessage.recycle(); 9567 mSourceMessage = null; 9568 transitionTo(mDisconnectedState); 9569 break; 9570 case WifiMonitor.WPS_FAIL_EVENT: 9571 // Arg1 has the reason for the failure 9572 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9573 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9574 mSourceMessage.recycle(); 9575 mSourceMessage = null; 9576 transitionTo(mDisconnectedState); 9577 } else { 9578 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9579 } 9580 break; 9581 case WifiMonitor.WPS_TIMEOUT_EVENT: 9582 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9583 WifiManager.WPS_TIMED_OUT); 9584 mSourceMessage.recycle(); 9585 mSourceMessage = null; 9586 transitionTo(mDisconnectedState); 9587 break; 9588 case WifiManager.START_WPS: 9589 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9590 break; 9591 case WifiManager.CANCEL_WPS: 9592 if (mWifiNative.cancelWps()) { 9593 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9594 } else { 9595 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9596 } 9597 transitionTo(mDisconnectedState); 9598 break; 9599 /** 9600 * Defer all commands that can cause connections to a different network 9601 * or put the state machine out of connect mode 9602 */ 9603 case CMD_STOP_DRIVER: 9604 case CMD_SET_OPERATIONAL_MODE: 9605 case WifiManager.CONNECT_NETWORK: 9606 case CMD_ENABLE_NETWORK: 9607 case CMD_RECONNECT: 9608 case CMD_REASSOCIATE: 9609 case CMD_ENABLE_ALL_NETWORKS: 9610 deferMessage(message); 9611 break; 9612 case CMD_AUTO_CONNECT: 9613 case CMD_AUTO_ROAM: 9614 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9615 return HANDLED; 9616 case CMD_START_SCAN: 9617 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9618 return HANDLED; 9619 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9620 if (DBG) log("Network connection lost"); 9621 handleNetworkDisconnect(); 9622 break; 9623 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9624 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9625 break; 9626 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9627 // Disregard auth failure events during WPS connection. The 9628 // EAP sequence is retried several times, and there might be 9629 // failures (especially for wps pin). We will get a WPS_XXX 9630 // event at the end of the sequence anyway. 9631 if (DBG) log("Ignore auth failure during WPS connection"); 9632 break; 9633 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9634 // Throw away supplicant state changes when WPS is running. 9635 // We will start getting supplicant state changes once we get 9636 // a WPS success or failure 9637 break; 9638 default: 9639 return NOT_HANDLED; 9640 } 9641 return HANDLED; 9642 } 9643 9644 @Override 9645 public void exit() { 9646 mWifiConfigStore.enableAllNetworks(); 9647 mWifiConfigStore.loadConfiguredNetworks(); 9648 } 9649 } 9650 9651 class SoftApStartingState extends State { 9652 @Override 9653 public void enter() { 9654 final Message message = getCurrentMessage(); 9655 if (message.what == CMD_START_AP) { 9656 final WifiConfiguration config = (WifiConfiguration) message.obj; 9657 9658 if (config == null) { 9659 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9660 } else { 9661 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9662 startSoftApWithConfig(config); 9663 } 9664 } else { 9665 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9666 } 9667 } 9668 @Override 9669 public boolean processMessage(Message message) { 9670 logStateAndMessage(message, getClass().getSimpleName()); 9671 9672 switch(message.what) { 9673 case CMD_START_SUPPLICANT: 9674 case CMD_STOP_SUPPLICANT: 9675 case CMD_START_AP: 9676 case CMD_STOP_AP: 9677 case CMD_START_DRIVER: 9678 case CMD_STOP_DRIVER: 9679 case CMD_SET_OPERATIONAL_MODE: 9680 case CMD_SET_COUNTRY_CODE: 9681 case CMD_SET_FREQUENCY_BAND: 9682 case CMD_START_PACKET_FILTERING: 9683 case CMD_STOP_PACKET_FILTERING: 9684 case CMD_TETHER_STATE_CHANGE: 9685 deferMessage(message); 9686 break; 9687 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9688 WifiConfiguration config = (WifiConfiguration) message.obj; 9689 if (config != null) { 9690 startSoftApWithConfig(config); 9691 } else { 9692 loge("Softap config is null!"); 9693 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9694 } 9695 break; 9696 case CMD_START_AP_SUCCESS: 9697 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9698 transitionTo(mSoftApStartedState); 9699 break; 9700 case CMD_START_AP_FAILURE: 9701 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9702 transitionTo(mInitialState); 9703 break; 9704 default: 9705 return NOT_HANDLED; 9706 } 9707 return HANDLED; 9708 } 9709 } 9710 9711 class SoftApStartedState extends State { 9712 @Override 9713 public boolean processMessage(Message message) { 9714 logStateAndMessage(message, getClass().getSimpleName()); 9715 9716 switch(message.what) { 9717 case CMD_STOP_AP: 9718 if (DBG) log("Stopping Soft AP"); 9719 /* We have not tethered at this point, so we just shutdown soft Ap */ 9720 try { 9721 mNwService.stopAccessPoint(mInterfaceName); 9722 } catch(Exception e) { 9723 loge("Exception in stopAccessPoint()"); 9724 } 9725 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9726 transitionTo(mInitialState); 9727 break; 9728 case CMD_START_AP: 9729 // Ignore a start on a running access point 9730 break; 9731 // Fail client mode operation when soft AP is enabled 9732 case CMD_START_SUPPLICANT: 9733 loge("Cannot start supplicant with a running soft AP"); 9734 setWifiState(WIFI_STATE_UNKNOWN); 9735 break; 9736 case CMD_TETHER_STATE_CHANGE: 9737 TetherStateChange stateChange = (TetherStateChange) message.obj; 9738 if (startTethering(stateChange.available)) { 9739 transitionTo(mTetheringState); 9740 } 9741 break; 9742 default: 9743 return NOT_HANDLED; 9744 } 9745 return HANDLED; 9746 } 9747 } 9748 9749 class TetheringState extends State { 9750 @Override 9751 public void enter() { 9752 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9753 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9754 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9755 } 9756 @Override 9757 public boolean processMessage(Message message) { 9758 logStateAndMessage(message, getClass().getSimpleName()); 9759 9760 switch(message.what) { 9761 case CMD_TETHER_STATE_CHANGE: 9762 TetherStateChange stateChange = (TetherStateChange) message.obj; 9763 if (isWifiTethered(stateChange.active)) { 9764 transitionTo(mTetheredState); 9765 } 9766 return HANDLED; 9767 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9768 if (message.arg1 == mTetherToken) { 9769 loge("Failed to get tether update, shutdown soft access point"); 9770 transitionTo(mSoftApStartedState); 9771 // Needs to be first thing handled 9772 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9773 } 9774 break; 9775 case CMD_START_SUPPLICANT: 9776 case CMD_STOP_SUPPLICANT: 9777 case CMD_START_AP: 9778 case CMD_STOP_AP: 9779 case CMD_START_DRIVER: 9780 case CMD_STOP_DRIVER: 9781 case CMD_SET_OPERATIONAL_MODE: 9782 case CMD_SET_COUNTRY_CODE: 9783 case CMD_SET_FREQUENCY_BAND: 9784 case CMD_START_PACKET_FILTERING: 9785 case CMD_STOP_PACKET_FILTERING: 9786 deferMessage(message); 9787 break; 9788 default: 9789 return NOT_HANDLED; 9790 } 9791 return HANDLED; 9792 } 9793 } 9794 9795 class TetheredState extends State { 9796 @Override 9797 public boolean processMessage(Message message) { 9798 logStateAndMessage(message, getClass().getSimpleName()); 9799 9800 switch(message.what) { 9801 case CMD_TETHER_STATE_CHANGE: 9802 TetherStateChange stateChange = (TetherStateChange) message.obj; 9803 if (!isWifiTethered(stateChange.active)) { 9804 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9805 setHostApRunning(null, false); 9806 setHostApRunning(null, true); 9807 } 9808 return HANDLED; 9809 case CMD_STOP_AP: 9810 if (DBG) log("Untethering before stopping AP"); 9811 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9812 stopTethering(); 9813 transitionTo(mUntetheringState); 9814 // More work to do after untethering 9815 deferMessage(message); 9816 break; 9817 default: 9818 return NOT_HANDLED; 9819 } 9820 return HANDLED; 9821 } 9822 } 9823 9824 class UntetheringState extends State { 9825 @Override 9826 public void enter() { 9827 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9828 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9829 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9830 9831 } 9832 @Override 9833 public boolean processMessage(Message message) { 9834 logStateAndMessage(message, getClass().getSimpleName()); 9835 9836 switch(message.what) { 9837 case CMD_TETHER_STATE_CHANGE: 9838 TetherStateChange stateChange = (TetherStateChange) message.obj; 9839 9840 /* Wait till wifi is untethered */ 9841 if (isWifiTethered(stateChange.active)) break; 9842 9843 transitionTo(mSoftApStartedState); 9844 break; 9845 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9846 if (message.arg1 == mTetherToken) { 9847 loge("Failed to get tether update, force stop access point"); 9848 transitionTo(mSoftApStartedState); 9849 } 9850 break; 9851 case CMD_START_SUPPLICANT: 9852 case CMD_STOP_SUPPLICANT: 9853 case CMD_START_AP: 9854 case CMD_STOP_AP: 9855 case CMD_START_DRIVER: 9856 case CMD_STOP_DRIVER: 9857 case CMD_SET_OPERATIONAL_MODE: 9858 case CMD_SET_COUNTRY_CODE: 9859 case CMD_SET_FREQUENCY_BAND: 9860 case CMD_START_PACKET_FILTERING: 9861 case CMD_STOP_PACKET_FILTERING: 9862 deferMessage(message); 9863 break; 9864 default: 9865 return NOT_HANDLED; 9866 } 9867 return HANDLED; 9868 } 9869 } 9870 9871 /** 9872 * State machine initiated requests can have replyTo set to null indicating 9873 * there are no recepients, we ignore those reply actions. 9874 */ 9875 private void replyToMessage(Message msg, int what) { 9876 if (msg.replyTo == null) return; 9877 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9878 mReplyChannel.replyToMessage(msg, dstMsg); 9879 } 9880 9881 private void replyToMessage(Message msg, int what, int arg1) { 9882 if (msg.replyTo == null) return; 9883 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9884 dstMsg.arg1 = arg1; 9885 mReplyChannel.replyToMessage(msg, dstMsg); 9886 } 9887 9888 private void replyToMessage(Message msg, int what, Object obj) { 9889 if (msg.replyTo == null) return; 9890 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9891 dstMsg.obj = obj; 9892 mReplyChannel.replyToMessage(msg, dstMsg); 9893 } 9894 9895 /** 9896 * arg2 on the source message has a unique id that needs to be retained in replies 9897 * to match the request 9898 * <p>see WifiManager for details 9899 */ 9900 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9901 Message msg = Message.obtain(); 9902 msg.what = what; 9903 msg.arg2 = srcMsg.arg2; 9904 return msg; 9905 } 9906 9907 /** 9908 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9909 * @param msg Must have a WifiConfiguration obj to succeed 9910 */ 9911 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9912 WifiConfiguration config) { 9913 if (config != null && config.preSharedKey != null) { 9914 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9915 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9916 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9917 wifiCredentialEventType); 9918 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9919 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9920 } 9921 } 9922 9923 private static int parseHex(char ch) { 9924 if ('0' <= ch && ch <= '9') { 9925 return ch - '0'; 9926 } else if ('a' <= ch && ch <= 'f') { 9927 return ch - 'a' + 10; 9928 } else if ('A' <= ch && ch <= 'F') { 9929 return ch - 'A' + 10; 9930 } else { 9931 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9932 } 9933 } 9934 9935 private byte[] parseHex(String hex) { 9936 /* This only works for good input; don't throw bad data at it */ 9937 if (hex == null) { 9938 return new byte[0]; 9939 } 9940 9941 if (hex.length() % 2 != 0) { 9942 throw new NumberFormatException(hex + " is not a valid hex string"); 9943 } 9944 9945 byte[] result = new byte[(hex.length())/2 + 1]; 9946 result[0] = (byte) ((hex.length())/2); 9947 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9948 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9949 byte b = (byte) (val & 0xFF); 9950 result[j] = b; 9951 } 9952 9953 return result; 9954 } 9955 9956 private static String makeHex(byte[] bytes) { 9957 StringBuilder sb = new StringBuilder(); 9958 for (byte b : bytes) { 9959 sb.append(String.format("%02x", b)); 9960 } 9961 return sb.toString(); 9962 } 9963 9964 private static String makeHex(byte[] bytes, int from, int len) { 9965 StringBuilder sb = new StringBuilder(); 9966 for (int i = 0; i < len; i++) { 9967 sb.append(String.format("%02x", bytes[from+i])); 9968 } 9969 return sb.toString(); 9970 } 9971 9972 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9973 9974 int len = array1.length + array2.length + array3.length; 9975 9976 if (array1.length != 0) { 9977 len++; /* add another byte for size */ 9978 } 9979 9980 if (array2.length != 0) { 9981 len++; /* add another byte for size */ 9982 } 9983 9984 if (array3.length != 0) { 9985 len++; /* add another byte for size */ 9986 } 9987 9988 byte[] result = new byte[len]; 9989 9990 int index = 0; 9991 if (array1.length != 0) { 9992 result[index] = (byte) (array1.length & 0xFF); 9993 index++; 9994 for (byte b : array1) { 9995 result[index] = b; 9996 index++; 9997 } 9998 } 9999 10000 if (array2.length != 0) { 10001 result[index] = (byte) (array2.length & 0xFF); 10002 index++; 10003 for (byte b : array2) { 10004 result[index] = b; 10005 index++; 10006 } 10007 } 10008 10009 if (array3.length != 0) { 10010 result[index] = (byte) (array3.length & 0xFF); 10011 index++; 10012 for (byte b : array3) { 10013 result[index] = b; 10014 index++; 10015 } 10016 } 10017 return result; 10018 } 10019 10020 private static byte[] concatHex(byte[] array1, byte[] array2) { 10021 10022 int len = array1.length + array2.length; 10023 10024 byte[] result = new byte[len]; 10025 10026 int index = 0; 10027 if (array1.length != 0) { 10028 for (byte b : array1) { 10029 result[index] = b; 10030 index++; 10031 } 10032 } 10033 10034 if (array2.length != 0) { 10035 for (byte b : array2) { 10036 result[index] = b; 10037 index++; 10038 } 10039 } 10040 10041 return result; 10042 } 10043 10044 void handleGsmAuthRequest(SimAuthRequestData requestData) { 10045 if (targetWificonfiguration == null 10046 || targetWificonfiguration.networkId == requestData.networkId) { 10047 logd("id matches targetWifiConfiguration"); 10048 } else { 10049 logd("id does not match targetWifiConfiguration"); 10050 return; 10051 } 10052 10053 TelephonyManager tm = (TelephonyManager) 10054 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10055 10056 if (tm != null) { 10057 StringBuilder sb = new StringBuilder(); 10058 for (String challenge : requestData.data) { 10059 10060 if (challenge == null || challenge.isEmpty()) 10061 continue; 10062 logd("RAND = " + challenge); 10063 10064 byte[] rand = null; 10065 try { 10066 rand = parseHex(challenge); 10067 } catch (NumberFormatException e) { 10068 loge("malformed challenge"); 10069 continue; 10070 } 10071 10072 String base64Challenge = android.util.Base64.encodeToString( 10073 rand, android.util.Base64.NO_WRAP); 10074 /* 10075 * First, try with appType = 2 => USIM according to 10076 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 10077 */ 10078 int appType = 2; 10079 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10080 if (tmResponse == null) { 10081 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 10082 * appType = 1 => SIM 10083 */ 10084 appType = 1; 10085 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10086 } 10087 logv("Raw Response - " + tmResponse); 10088 10089 if (tmResponse != null && tmResponse.length() > 4) { 10090 byte[] result = android.util.Base64.decode(tmResponse, 10091 android.util.Base64.DEFAULT); 10092 logv("Hex Response -" + makeHex(result)); 10093 int sres_len = result[0]; 10094 String sres = makeHex(result, 1, sres_len); 10095 int kc_offset = 1+sres_len; 10096 int kc_len = result[kc_offset]; 10097 String kc = makeHex(result, 1+kc_offset, kc_len); 10098 sb.append(":" + kc + ":" + sres); 10099 logv("kc:" + kc + " sres:" + sres); 10100 } else { 10101 loge("bad response - " + tmResponse); 10102 } 10103 } 10104 10105 String response = sb.toString(); 10106 logv("Supplicant Response -" + response); 10107 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 10108 } else { 10109 loge("could not get telephony manager"); 10110 } 10111 } 10112 10113 void handle3GAuthRequest(SimAuthRequestData requestData) { 10114 StringBuilder sb = new StringBuilder(); 10115 byte[] rand = null; 10116 byte[] authn = null; 10117 String res_type = "UMTS-AUTH"; 10118 10119 if (targetWificonfiguration == null 10120 || targetWificonfiguration.networkId == requestData.networkId) { 10121 logd("id matches targetWifiConfiguration"); 10122 } else { 10123 logd("id does not match targetWifiConfiguration"); 10124 return; 10125 } 10126 if (requestData.data.length == 2) { 10127 try { 10128 rand = parseHex(requestData.data[0]); 10129 authn = parseHex(requestData.data[1]); 10130 } catch (NumberFormatException e) { 10131 loge("malformed challenge"); 10132 } 10133 } else { 10134 loge("malformed challenge"); 10135 } 10136 10137 String tmResponse = ""; 10138 if (rand != null && authn != null) { 10139 String base64Challenge = android.util.Base64.encodeToString( 10140 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10141 10142 TelephonyManager tm = (TelephonyManager) 10143 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10144 if (tm != null) { 10145 int appType = 2; // 2 => USIM 10146 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10147 logv("Raw Response - " + tmResponse); 10148 } else { 10149 loge("could not get telephony manager"); 10150 } 10151 } 10152 10153 if (tmResponse != null && tmResponse.length() > 4) { 10154 byte[] result = android.util.Base64.decode(tmResponse, 10155 android.util.Base64.DEFAULT); 10156 loge("Hex Response - " + makeHex(result)); 10157 byte tag = result[0]; 10158 if (tag == (byte) 0xdb) { 10159 logv("successful 3G authentication "); 10160 int res_len = result[1]; 10161 String res = makeHex(result, 2, res_len); 10162 int ck_len = result[res_len + 2]; 10163 String ck = makeHex(result, res_len + 3, ck_len); 10164 int ik_len = result[res_len + ck_len + 3]; 10165 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10166 sb.append(":" + ik + ":" + ck + ":" + res); 10167 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10168 } else if (tag == (byte) 0xdc) { 10169 loge("synchronisation failure"); 10170 int auts_len = result[1]; 10171 String auts = makeHex(result, 2, auts_len); 10172 res_type = "UMTS-AUTS"; 10173 sb.append(":" + auts); 10174 logv("auts:" + auts); 10175 } else { 10176 loge("bad response - unknown tag = " + tag); 10177 return; 10178 } 10179 } else { 10180 loge("bad response - " + tmResponse); 10181 return; 10182 } 10183 10184 String response = sb.toString(); 10185 logv("Supplicant Response -" + response); 10186 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10187 } 10188 10189 /** 10190 * @param reason reason code from supplicant on network disconnected event 10191 * @return true if this is a suspicious disconnect 10192 */ 10193 static boolean unexpectedDisconnectedReason(int reason) { 10194 return reason == 2 // PREV_AUTH_NOT_VALID 10195 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10196 || reason == 7 // FRAME_FROM_NONASSOC_STA 10197 || reason == 8 // STA_HAS_LEFT 10198 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10199 || reason == 14 // MICHAEL_MIC_FAILURE 10200 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10201 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10202 || reason == 18 // GROUP_CIPHER_NOT_VALID 10203 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10204 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10205 || reason == 34; // DISASSOC_LOW_ACK 10206 } 10207} 10208