WifiStateMachine.java revision 8cf2b5c507918a30629b9dc24944422fc0920665
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; 28import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 29 30import android.Manifest; 31import android.app.ActivityManager; 32import android.app.AlarmManager; 33import android.app.PendingIntent; 34import android.app.backup.IBackupManager; 35import android.bluetooth.BluetoothAdapter; 36import android.content.BroadcastReceiver; 37import android.content.Context; 38import android.content.Intent; 39import android.content.IntentFilter; 40import android.content.pm.ApplicationInfo; 41import android.content.pm.IPackageManager; 42import android.content.pm.PackageManager; 43import android.database.ContentObserver; 44import android.net.ConnectivityManager; 45import android.net.DhcpResults; 46import android.net.DhcpStateMachine; 47import android.net.InterfaceConfiguration; 48import android.net.LinkAddress; 49import android.net.LinkProperties; 50import android.net.Network; 51import android.net.NetworkAgent; 52import android.net.NetworkCapabilities; 53import android.net.NetworkFactory; 54import android.net.NetworkInfo; 55import android.net.NetworkInfo.DetailedState; 56import android.net.NetworkRequest; 57import android.net.NetworkUtils; 58import android.net.RouteInfo; 59import android.net.StaticIpConfiguration; 60import android.net.ip.IpManager; 61import android.net.wifi.PasspointManagementObjectDefinition; 62import android.net.wifi.RssiPacketCountInfo; 63import android.net.wifi.ScanResult; 64import android.net.wifi.ScanSettings; 65import android.net.wifi.SupplicantState; 66import android.net.wifi.WifiChannel; 67import android.net.wifi.WifiConfiguration; 68import android.net.wifi.WifiConnectionStatistics; 69import android.net.wifi.WifiEnterpriseConfig; 70import android.net.wifi.WifiInfo; 71import android.net.wifi.WifiLinkLayerStats; 72import android.net.wifi.WifiManager; 73import android.net.wifi.WifiScanner; 74import android.net.wifi.WifiSsid; 75import android.net.wifi.WpsInfo; 76import android.net.wifi.WpsResult; 77import android.net.wifi.WpsResult.Status; 78import android.net.wifi.p2p.IWifiP2pManager; 79import android.os.BatteryStats; 80import android.os.Binder; 81import android.os.Bundle; 82import android.os.IBinder; 83import android.os.INetworkManagementService; 84import android.os.Looper; 85import android.os.Message; 86import android.os.Messenger; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.SystemClock; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.WorkSource; 94import android.provider.Settings; 95import android.telephony.TelephonyManager; 96import android.text.TextUtils; 97import android.util.Log; 98import android.util.LruCache; 99 100import com.android.internal.R; 101import com.android.internal.app.IBatteryStats; 102import com.android.internal.util.AsyncChannel; 103import com.android.internal.util.Protocol; 104import com.android.internal.util.State; 105import com.android.internal.util.StateMachine; 106import com.android.server.connectivity.KeepalivePacketData; 107import com.android.server.wifi.hotspot2.IconEvent; 108import com.android.server.wifi.hotspot2.NetworkDetail; 109import com.android.server.wifi.hotspot2.Utils; 110import com.android.server.wifi.p2p.WifiP2pServiceImpl; 111 112import java.io.BufferedReader; 113import java.io.FileDescriptor; 114import java.io.FileNotFoundException; 115import java.io.FileReader; 116import java.io.IOException; 117import java.io.PrintWriter; 118import java.net.Inet4Address; 119import java.net.InetAddress; 120import java.util.ArrayList; 121import java.util.Arrays; 122import java.util.Calendar; 123import java.util.HashSet; 124import java.util.LinkedList; 125import java.util.List; 126import java.util.Locale; 127import java.util.Queue; 128import java.util.Random; 129import java.util.Set; 130import java.util.concurrent.atomic.AtomicBoolean; 131import java.util.concurrent.atomic.AtomicInteger; 132import java.util.regex.Pattern; 133 134/** 135 * TODO: 136 * Deprecate WIFI_STATE_UNKNOWN 137 */ 138 139/** 140 * Track the state of Wifi connectivity. All event handling is done here, 141 * and all changes in connectivity state are initiated here. 142 * 143 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 144 * In the current implementation, we support concurrent wifi p2p and wifi operation. 145 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 146 * handles p2p operation. 147 * 148 * @hide 149 */ 150public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler, 151 WifiNative.WifiRssiEventHandler { 152 153 private static final String NETWORKTYPE = "WIFI"; 154 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 155 private static boolean DBG = false; 156 private static boolean VDBG = false; 157 private static boolean VVDBG = false; 158 private static boolean USE_PAUSE_SCANS = false; 159 private static boolean mLogMessages = false; 160 private static final String TAG = "WifiStateMachine"; 161 162 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 163 164 private static final String GOOGLE_OUI = "DA-A1-19"; 165 166 /* temporary debug flag - best network selection development */ 167 private static boolean PDBG = false; 168 169 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 170 * the corresponding BSSID. 171 */ 172 private boolean didBlackListBSSID = false; 173 174 /** 175 * Log with error attribute 176 * 177 * @param s is string log 178 */ 179 protected void loge(String s) { 180 Log.e(getName(), s); 181 } 182 protected void logd(String s) { 183 Log.d(getName(), s); 184 } 185 protected void log(String s) {; 186 Log.d(getName(), s); 187 } 188 189 private WifiMetrics mWifiMetrics; 190 private WifiMonitor mWifiMonitor; 191 private WifiNative mWifiNative; 192 private WifiConfigStore mWifiConfigStore; 193 private WifiQualifiedNetworkSelector mWifiQualifiedNetworkSelector; 194 private INetworkManagementService mNwService; 195 private ConnectivityManager mCm; 196 private BaseWifiLogger mWifiLogger; 197 private WifiApConfigStore mWifiApConfigStore; 198 private final boolean mP2pSupported; 199 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 200 private boolean mTemporarilyDisconnectWifi = false; 201 private final String mPrimaryDeviceType; 202 203 /* Scan results handling */ 204 private List<ScanDetail> mScanResults = new ArrayList<>(); 205 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 206 private static final int SCAN_RESULT_CACHE_SIZE = 160; 207 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 208 // For debug, number of known scan results that were found as part of last scan result event, 209 // as well the number of scans results returned by the supplicant with that message 210 private int mNumScanResultsKnown; 211 private int mNumScanResultsReturned; 212 213 private boolean mScreenOn = false; 214 215 /* Chipset supports background scan */ 216 private final boolean mBackgroundScanSupported; 217 218 private final String mInterfaceName; 219 /* Tethering interface could be separate from wlan interface */ 220 private String mTetherInterfaceName; 221 222 private int mLastSignalLevel = -1; 223 private String mLastBssid; 224 private int mLastNetworkId; // The network Id we successfully joined 225 private ScanDetail mActiveScanDetail; // ScanDetail associated with active network 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 private int mHalFeatureSet = 0; 235 private static int mPnoResultFound = 0; 236 237 private int mCurrentUserId = UserHandle.USER_SYSTEM; 238 239 private boolean mAllowUntrustedConnections = false; 240 241 @Override 242 public void onPnoNetworkFound(ScanResult results[]) { 243 if (DBG) { 244 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 245 for (int i = 0; i < results.length; i++) { 246 Log.e(TAG, results[i].toString()); 247 } 248 } 249 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 250 } 251 252 public void processPnoNetworkFound(ScanResult results[]) { 253 ScanSettings settings = new ScanSettings(); 254 settings.channelSet = new ArrayList<WifiChannel>(); 255 StringBuilder sb = new StringBuilder(); 256 sb.append(""); 257 for (int i=0; i<results.length; i++) { 258 WifiChannel channel = new WifiChannel(); 259 channel.freqMHz = results[i].frequency; 260 settings.channelSet.add(channel); 261 sb.append(results[i].SSID).append(" "); 262 } 263 264 stopPnoOffload(); 265 266 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 267 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 268 mPnoResultFound ++; 269 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 270 int delay = 30 * 1000; 271 // reconfigure Pno after 1 minutes if we're still in disconnected state 272 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 273 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 274 (long)delay); 275 mRestartAutoJoinOffloadCounter++; 276 } 277 278 @Override 279 public void onRssiThresholdBreached(byte curRssi) { 280 if (DBG) { 281 Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi); 282 } 283 sendMessage(CMD_RSSI_THRESHOLD_BREACH, curRssi); 284 } 285 286 public void processRssiThreshold(byte curRssi, int reason) { 287 if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) { 288 Log.wtf(TAG, "processRssiThreshold: Invalid rssi " + curRssi); 289 return; 290 } 291 for (int i = 0; i < mRssiRanges.length; i++) { 292 if (curRssi < mRssiRanges[i]) { 293 // Assume sorted values(ascending order) for rssi, 294 // bounded by high(127) and low(-128) at extremeties 295 byte maxRssi = mRssiRanges[i]; 296 byte minRssi = mRssiRanges[i-1]; 297 // This value of hw has to be believed as this value is averaged and has breached 298 // the rssi thresholds and raised event to host. This would be eggregious if this 299 // value is invalid 300 mWifiInfo.setRssi((int) curRssi); 301 updateCapabilities(getCurrentWifiConfiguration()); 302 int ret = startRssiMonitoringOffload(maxRssi, minRssi); 303 Log.d(TAG, "Re-program RSSI thresholds for " + smToString(reason) + 304 ": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret); 305 break; 306 } 307 } 308 } 309 public void registerNetworkDisabled(int netId) { 310 // Restart legacy PNO and autojoin offload if needed 311 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 312 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 313 mRestartAutoJoinOffloadCounter++; 314 } 315 316 // Testing various network disconnect cases by sending lots of spurious 317 // disconnect to supplicant 318 private boolean testNetworkDisconnect = false; 319 320 private boolean mEnableRssiPolling = false; 321 private boolean mLegacyPnoEnabled = false; 322 private int mRssiPollToken = 0; 323 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 324 * In CONNECT_MODE, the STA can scan and connect to an access point 325 * In SCAN_ONLY_MODE, the STA can only scan for access points 326 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 327 */ 328 private int mOperationalMode = CONNECT_MODE; 329 private boolean mIsScanOngoing = false; 330 private boolean mIsFullScanOngoing = false; 331 private boolean mSendScanResultsBroadcast = false; 332 333 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 334 private WorkSource mScanWorkSource = null; 335 private static final int UNKNOWN_SCAN_SOURCE = -1; 336 private static final int SCAN_ALARM_SOURCE = -2; 337 private static final int ADD_OR_UPDATE_SOURCE = -3; 338 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 339 private static final int ENABLE_WIFI = -5; 340 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 341 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 342 343 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 344 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 345 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 346 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 347 348 /* Tracks if state machine has received any screen state change broadcast yet. 349 * We can miss one of these at boot. 350 */ 351 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 352 353 private boolean mBluetoothConnectionActive = false; 354 355 private PowerManager.WakeLock mSuspendWakeLock; 356 357 /** 358 * Interval in milliseconds between polling for RSSI 359 * and linkspeed information 360 */ 361 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 362 363 /** 364 * Interval in milliseconds between receiving a disconnect event 365 * while connected to a good AP, and handling the disconnect proper 366 */ 367 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 368 369 /** 370 * Delay between supplicant restarts upon failure to establish connection 371 */ 372 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 373 374 /** 375 * Number of times we attempt to restart supplicant 376 */ 377 private static final int SUPPLICANT_RESTART_TRIES = 5; 378 379 private int mSupplicantRestartCount = 0; 380 /* Tracks sequence number on stop failure message */ 381 private int mSupplicantStopFailureToken = 0; 382 383 /** 384 * Tether state change notification time out 385 */ 386 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 387 388 /* Tracks sequence number on a tether notification time out */ 389 private int mTetherToken = 0; 390 391 /** 392 * Driver start time out. 393 */ 394 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 395 396 /* Tracks sequence number on a driver time out */ 397 private int mDriverStartToken = 0; 398 399 /** 400 * Don't select new network when previous network selection is 401 * pending connection for this much time 402 */ 403 private static final int CONNECT_TIMEOUT_MSEC = 3000; 404 405 /** 406 * The link properties of the wifi interface. 407 * Do not modify this directly; use updateLinkProperties instead. 408 */ 409 private LinkProperties mLinkProperties; 410 411 /* Tracks sequence number on a periodic scan message */ 412 private int mPeriodicScanToken = 0; 413 414 // Wakelock held during wifi start/stop and driver load/unload 415 private PowerManager.WakeLock mWakeLock; 416 417 private Context mContext; 418 419 private final Object mDhcpResultsLock = new Object(); 420 private DhcpResults mDhcpResults; 421 422 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 423 private WifiInfo mWifiInfo; 424 private NetworkInfo mNetworkInfo; 425 private final NetworkCapabilities mDfltNetworkCapabilities; 426 private SupplicantStateTracker mSupplicantStateTracker; 427 428 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 429 430 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 431 432 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 433 private boolean mAutoRoaming = false; 434 435 // Roaming failure count 436 private int mRoamFailCount = 0; 437 438 // This is the BSSID we are trying to associate to, it can be set to "any" 439 // if we havent selected a BSSID for joining. 440 // if we havent selected a BSSID for joining. 441 // The BSSID we are associated to is found in mWifiInfo 442 private String mTargetRoamBSSID = "any"; 443 //This one is used to track whta is the current target network ID. This is used for error 444 // handling during connection setup since many error message from supplicant does not report 445 // SSID Once connected, it will be set to invalid 446 private int mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 447 448 private long mLastDriverRoamAttempt = 0; 449 450 private WifiConfiguration targetWificonfiguration = null; 451 452 // Used as debug to indicate which configuration last was saved 453 private WifiConfiguration lastSavedConfigurationAttempt = null; 454 455 // Used as debug to indicate which configuration last was removed 456 private WifiConfiguration lastForgetConfigurationAttempt = null; 457 458 //Random used by softAP channel Selection 459 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 460 461 boolean isRoaming() { 462 return mAutoRoaming; 463 } 464 465 public void autoRoamSetBSSID(int netId, String bssid) { 466 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 467 } 468 469 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 470 boolean ret = true; 471 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 472 if (bssid == null) bssid = "any"; 473 if (config == null) return false; // Nothing to do 474 475 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 476 return false; // We didnt change anything 477 } 478 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 479 // Changing to ANY 480 if (!mWifiConfigStore.roamOnAny) { 481 ret = false; // Nothing to do 482 } 483 } 484 if (config.BSSID != null) { 485 bssid = config.BSSID; 486 if (DBG) { 487 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 488 } 489 } 490 491 if (VDBG) { 492 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 493 } 494 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 495 mTargetRoamBSSID = bssid; 496 mWifiConfigStore.saveWifiConfigBSSID(config); 497 return ret; 498 } 499 500 /** 501 * set Config's default BSSID (for association purpose) 502 * @param config config need set BSSID 503 * @param bssid default BSSID to assocaite with when connect to this network 504 * @return false -- does not change the current default BSSID of the configure 505 * true -- change the current default BSSID of the configur 506 */ 507 private boolean setTargetBssid(WifiConfiguration config, String bssid) { 508 if (config == null) { 509 return false; 510 } 511 512 if (config.BSSID != null) { 513 bssid = config.BSSID; 514 if (DBG) { 515 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 516 } 517 } 518 519 if (bssid == null) { 520 bssid = "any"; 521 } 522 523 String networkSelectionBSSID = config.getNetworkSelectionStatus() 524 .getNetworkSelectionBSSID(); 525 if (networkSelectionBSSID != null && networkSelectionBSSID.equals(bssid)) { 526 if (DBG) { 527 Log.d(TAG, "Current prefered BSSID is same as target"); 528 return false; 529 } 530 } 531 532 if (DBG) { 533 Log.d(TAG, "target set to " + config.SSID + ":" + bssid); 534 } 535 536 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 537 mTargetRoamBSSID = bssid; 538 mWifiConfigStore.saveWifiConfigBSSID(config); 539 return true; 540 } 541 /** 542 * Save the UID correctly depending on if this is a new or existing network. 543 * @return true if operation is authorized, false otherwise 544 */ 545 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 546 if (!mWifiConfigStore.isNetworkConfigured(config)) { 547 config.creatorUid = uid; 548 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 549 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 550 return false; 551 } 552 553 config.lastUpdateUid = uid; 554 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 555 556 return true; 557 558 } 559 560 /** 561 * Checks to see if user has specified if the apps configuration is connectable. 562 * If the user hasn't specified we query the user and return true. 563 * 564 * @param message The message to be deferred 565 * @param netId Network id of the configuration to check against 566 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 567 * CONFIG_OVERRIDE_PERMISSION 568 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 569 */ 570 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 571 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 572 573 // We can only evaluate saved configurations. 574 if (config == null) { 575 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 576 return true; 577 } 578 579 switch (config.userApproved) { 580 case WifiConfiguration.USER_APPROVED: 581 case WifiConfiguration.USER_BANNED: 582 return false; 583 case WifiConfiguration.USER_PENDING: 584 default: // USER_UNSPECIFIED 585 /* the intention was to ask user here; but a dialog box is * 586 * too invasive; so we are going to allow connection for now */ 587 config.userApproved = WifiConfiguration.USER_APPROVED; 588 return false; 589 } 590 } 591 592 private final IpManager mIpManager; 593 594 private AlarmManager mAlarmManager; 595 private PendingIntent mScanIntent; 596 private PendingIntent mDriverStopIntent; 597 private PendingIntent mPnoIntent; 598 599 private int mDisconnectedPnoAlarmCount = 0; 600 /* Tracks current frequency mode */ 601 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 602 603 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 604 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 605 606 // Channel for sending replies. 607 private AsyncChannel mReplyChannel = new AsyncChannel(); 608 609 private WifiP2pServiceImpl mWifiP2pServiceImpl; 610 611 // Used to initiate a connection with WifiP2pService 612 private AsyncChannel mWifiP2pChannel; 613 614 private WifiScanner mWifiScanner; 615 616 private int mConnectionRequests = 0; 617 private WifiNetworkFactory mNetworkFactory; 618 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 619 private WifiNetworkAgent mNetworkAgent; 620 621 private String[] mWhiteListedSsids = null; 622 623 private byte[] mRssiRanges; 624 625 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 626 // We should really persist that into the networkHistory.txt file, and read it back when 627 // WifiStateMachine starts up 628 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 629 630 // Used to filter out requests we couldn't possibly satisfy. 631 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 632 633 /* The base for wifi message types */ 634 static final int BASE = Protocol.BASE_WIFI; 635 /* Start the supplicant */ 636 static final int CMD_START_SUPPLICANT = BASE + 11; 637 /* Stop the supplicant */ 638 static final int CMD_STOP_SUPPLICANT = BASE + 12; 639 /* Start the driver */ 640 static final int CMD_START_DRIVER = BASE + 13; 641 /* Stop the driver */ 642 static final int CMD_STOP_DRIVER = BASE + 14; 643 /* Indicates Static IP succeeded */ 644 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 645 /* Indicates Static IP failed */ 646 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 647 /* Indicates supplicant stop failed */ 648 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 649 /* A delayed message sent to start driver when it fail to come up */ 650 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 651 652 /* Start the soft access point */ 653 static final int CMD_START_AP = BASE + 21; 654 /* Indicates soft ap start succeeded */ 655 static final int CMD_START_AP_SUCCESS = BASE + 22; 656 /* Indicates soft ap start failed */ 657 static final int CMD_START_AP_FAILURE = BASE + 23; 658 /* Stop the soft access point */ 659 static final int CMD_STOP_AP = BASE + 24; 660 /* Invoked when getting a tether state change notification */ 661 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 662 /* A delayed message sent to indicate tether state change failed to arrive */ 663 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 664 665 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 666 667 /* Supplicant commands */ 668 /* Is supplicant alive ? */ 669 static final int CMD_PING_SUPPLICANT = BASE + 51; 670 /* Add/update a network configuration */ 671 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 672 /* Delete a network */ 673 static final int CMD_REMOVE_NETWORK = BASE + 53; 674 /* Enable a network. The device will attempt a connection to the given network. */ 675 static final int CMD_ENABLE_NETWORK = BASE + 54; 676 /* Enable all networks */ 677 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 678 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 679 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 680 /* Clear the blacklist network list */ 681 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 682 /* Save configuration */ 683 static final int CMD_SAVE_CONFIG = BASE + 58; 684 /* Get configured networks */ 685 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 686 /* Get available frequencies */ 687 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 688 /* Get adaptors */ 689 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 690 /* Get configured networks with real preSharedKey */ 691 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 692 /* Get Link Layer Stats thru HAL */ 693 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 694 /* Supplicant commands after driver start*/ 695 /* Initiate a scan */ 696 static final int CMD_START_SCAN = BASE + 71; 697 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 698 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 699 /* Disconnect from a network */ 700 static final int CMD_DISCONNECT = BASE + 73; 701 /* Reconnect to a network */ 702 static final int CMD_RECONNECT = BASE + 74; 703 /* Reassociate to a network */ 704 static final int CMD_REASSOCIATE = BASE + 75; 705 /* Get Connection Statistis */ 706 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 707 708 /* Controls suspend mode optimizations 709 * 710 * When high perf mode is enabled, suspend mode optimizations are disabled 711 * 712 * When high perf mode is disabled, suspend mode optimizations are enabled 713 * 714 * Suspend mode optimizations include: 715 * - packet filtering 716 * - turn off roaming 717 * - DTIM wake up settings 718 */ 719 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 720 /* Set the country code */ 721 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 722 /* Enables RSSI poll */ 723 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 724 /* RSSI poll */ 725 static final int CMD_RSSI_POLL = BASE + 83; 726 /* Set up packet filtering */ 727 static final int CMD_START_PACKET_FILTERING = BASE + 84; 728 /* Clear packet filter */ 729 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 730 /* Enable suspend mode optimizations in the driver */ 731 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 732 /* Delayed NETWORK_DISCONNECT */ 733 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 734 /* When there are no saved networks, we do a periodic scan to notify user of 735 * an open network */ 736 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 737 /* Test network Disconnection NETWORK_DISCONNECT */ 738 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 739 740 private int testNetworkDisconnectCounter = 0; 741 742 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 743 static final int MULTICAST_V6 = 1; 744 static final int MULTICAST_V4 = 0; 745 746 /* Set the frequency band */ 747 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 748 /* Enable TDLS on a specific MAC address */ 749 static final int CMD_ENABLE_TDLS = BASE + 92; 750 /* DHCP/IP configuration watchdog */ 751 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 752 753 /** 754 * Watchdog for protecting against b/16823537 755 * Leave time for 4-way handshake to succeed 756 */ 757 static final int ROAM_GUARD_TIMER_MSEC = 15000; 758 759 int roamWatchdogCount = 0; 760 /* Roam state watchdog */ 761 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 762 /* Screen change intent handling */ 763 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 764 765 /* Disconnecting state watchdog */ 766 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 767 768 /* Remove a packages associated configrations */ 769 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 770 771 /* Disable an ephemeral network */ 772 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 773 774 /* Get matching network */ 775 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 776 777 /* alert from firmware */ 778 static final int CMD_FIRMWARE_ALERT = BASE + 100; 779 780 /* SIM is removed; reset any cached data for it */ 781 static final int CMD_RESET_SIM_NETWORKS = BASE + 101; 782 783 /* OSU APIs */ 784 static final int CMD_ADD_PASSPOINT_MO = BASE + 102; 785 static final int CMD_MODIFY_PASSPOINT_MO = BASE + 103; 786 static final int CMD_QUERY_OSU_ICON = BASE + 104; 787 788 /* try to match a provider with current network */ 789 static final int CMD_MATCH_PROVIDER_NETWORK = BASE + 105; 790 791 /** 792 * Make this timer 40 seconds, which is about the normal DHCP timeout. 793 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 794 * for more than 30 seconds. 795 */ 796 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 797 798 int obtainingIpWatchdogCount = 0; 799 800 /* Commands from/to the SupplicantStateTracker */ 801 /* Reset the supplicant state tracker */ 802 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 803 804 int disconnectingWatchdogCount = 0; 805 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 806 807 /* P2p commands */ 808 /* We are ok with no response here since we wont do much with it anyway */ 809 public static final int CMD_ENABLE_P2P = BASE + 131; 810 /* In order to shut down supplicant cleanly, we wait till p2p has 811 * been disabled */ 812 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 813 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 814 815 public static final int CMD_BOOT_COMPLETED = BASE + 134; 816 817 /* We now have a valid IP configuration. */ 818 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 819 /* We no longer have a valid IP configuration. */ 820 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 821 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 822 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 823 824 /* Supplicant is trying to associate to a given BSSID */ 825 static final int CMD_TARGET_BSSID = BASE + 141; 826 827 /* Reload all networks and reconnect */ 828 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 829 830 static final int CMD_AUTO_CONNECT = BASE + 143; 831 832 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 833 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 834 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 835 836 static final int CMD_UNWANTED_NETWORK = BASE + 144; 837 838 static final int CMD_AUTO_ROAM = BASE + 145; 839 840 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 841 842 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 843 844 static final int CMD_NETWORK_STATUS = BASE + 148; 845 846 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 847 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 848 849 /* Remove a packages associated configrations */ 850 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 851 852 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 853 854 /* used to restart PNO when it was stopped due to association attempt */ 855 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 856 857 static int mRestartAutoJoinOffloadCounter = 0; 858 859 /* used to log if PNO was started */ 860 static final int CMD_STARTED_PNO_DBG = BASE + 155; 861 862 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 863 864 /* used to log if PNO was started */ 865 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 866 867 /* used to log if GSCAN was started */ 868 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 869 870 /* used to offload sending IP packet */ 871 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 872 873 /* used to stop offload sending IP packet */ 874 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 875 876 /* used to start rssi monitoring in hw */ 877 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 878 879 /* used to stop rssi moniroting in hw */ 880 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 881 882 /* used to indicated RSSI threshold breach in hw */ 883 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 884 885 /* used to indicate that the foreground user was switched */ 886 static final int CMD_USER_SWITCH = BASE + 165; 887 888 /** 889 * Used temporarily to handle messages bounced between WifiStateMachine and IpManager. 890 * 891 * These will be deleted when DHCPv4 and static IP configuration are moved out. 892 */ 893 static final int CMD_IPV4_PROVISIONING_SUCCESS = BASE + 200; 894 static final int CMD_IPV4_PROVISIONING_FAILURE = BASE + 201; 895 896 897 /* Wifi state machine modes of operation */ 898 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 899 public static final int CONNECT_MODE = 1; 900 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 901 public static final int SCAN_ONLY_MODE = 2; 902 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 903 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 904 905 private static final int SUCCESS = 1; 906 private static final int FAILURE = -1; 907 908 /* Tracks if suspend optimizations need to be disabled by DHCP, 909 * screen or due to high perf mode. 910 * When any of them needs to disable it, we keep the suspend optimizations 911 * disabled 912 */ 913 private int mSuspendOptNeedsDisabled = 0; 914 915 private static final int SUSPEND_DUE_TO_DHCP = 1; 916 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 917 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 918 919 /* Tracks if user has enabled suspend optimizations through settings */ 920 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 921 922 /** 923 * Default framework scan interval in milliseconds. This is used in the scenario in which 924 * wifi chipset does not support background scanning to set up a 925 * periodic wake up scan so that the device can connect to a new access 926 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 927 * override this. 928 */ 929 private final int mDefaultFrameworkScanIntervalMs; 930 931 932 /** 933 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 934 */ 935 private final int mNoNetworksPeriodicScan; 936 937 /** 938 * Supplicant scan interval in milliseconds. 939 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 940 * from the default config if the setting is not set 941 */ 942 private long mSupplicantScanIntervalMs; 943 944 /** 945 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 946 */ 947 private long lastFullBandConnectedTimeMilli; 948 949 /** 950 * time interval to the next full band scan we will perform for 951 * autojoin while connected with screen lit 952 */ 953 private long fullBandConnectedTimeIntervalMilli; 954 955 /** 956 * max time interval to the next full band scan we will perform for 957 * autojoin while connected with screen lit 958 * Max time is 5 minutes 959 */ 960 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 961 962 /** 963 * Minimum time interval between enabling all networks. 964 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 965 * due to enabling every time. We add a threshold to avoid this. 966 */ 967 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 968 private long mLastEnableAllNetworksTime; 969 970 int mRunningBeaconCount = 0; 971 972 973 // config option that indicate whether or not to reset country code to default when 974 // cellular radio indicates country code loss 975 private boolean mRevertCountryCodeOnCellularLoss = false; 976 977 private String mDefaultCountryCode; 978 979 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 980 981 // Supplicant doesn't like setting the same country code multiple times (it may drop 982 // currently connected network), so we save the current device set country code here to avoid 983 // redundency 984 private String mDriverSetCountryCode = null; 985 986 /* Default parent state */ 987 private State mDefaultState = new DefaultState(); 988 /* Temporary initial state */ 989 private State mInitialState = new InitialState(); 990 /* Driver loaded, waiting for supplicant to start */ 991 private State mSupplicantStartingState = new SupplicantStartingState(); 992 /* Driver loaded and supplicant ready */ 993 private State mSupplicantStartedState = new SupplicantStartedState(); 994 /* Waiting for supplicant to stop and monitor to exit */ 995 private State mSupplicantStoppingState = new SupplicantStoppingState(); 996 /* Driver start issued, waiting for completed event */ 997 private State mDriverStartingState = new DriverStartingState(); 998 /* Driver started */ 999 private State mDriverStartedState = new DriverStartedState(); 1000 /* Wait until p2p is disabled 1001 * This is a special state which is entered right after we exit out of DriverStartedState 1002 * before transitioning to another state. 1003 */ 1004 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 1005 /* Driver stopping */ 1006 private State mDriverStoppingState = new DriverStoppingState(); 1007 /* Driver stopped */ 1008 private State mDriverStoppedState = new DriverStoppedState(); 1009 /* Scan for networks, no connection will be established */ 1010 private State mScanModeState = new ScanModeState(); 1011 /* Connecting to an access point */ 1012 private State mConnectModeState = new ConnectModeState(); 1013 /* Connected at 802.11 (L2) level */ 1014 private State mL2ConnectedState = new L2ConnectedState(); 1015 /* fetching IP after connection to access point (assoc+auth complete) */ 1016 private State mObtainingIpState = new ObtainingIpState(); 1017 /* Connected with IP addr */ 1018 private State mConnectedState = new ConnectedState(); 1019 /* Roaming */ 1020 private State mRoamingState = new RoamingState(); 1021 /* disconnect issued, waiting for network disconnect confirmation */ 1022 private State mDisconnectingState = new DisconnectingState(); 1023 /* Network is not connected, supplicant assoc+auth is not complete */ 1024 private State mDisconnectedState = new DisconnectedState(); 1025 /* Waiting for WPS to be completed*/ 1026 private State mWpsRunningState = new WpsRunningState(); 1027 1028 /* Soft ap is starting up */ 1029 private State mSoftApStartingState = new SoftApStartingState(); 1030 /* Soft ap is running */ 1031 private State mSoftApStartedState = new SoftApStartedState(); 1032 /* Soft ap is running and we are waiting for tether notification */ 1033 private State mTetheringState = new TetheringState(); 1034 /* Soft ap is running and we are tethered through connectivity service */ 1035 private State mTetheredState = new TetheredState(); 1036 /* Waiting for untether confirmation before stopping soft Ap */ 1037 private State mUntetheringState = new UntetheringState(); 1038 1039 1040 1041 private class WifiScanListener implements WifiScanner.ScanListener { 1042 @Override 1043 public void onSuccess() { 1044 Log.e(TAG, "WifiScanListener onSuccess"); 1045 }; 1046 @Override 1047 public void onFailure(int reason, String description) { 1048 Log.e(TAG, "WifiScanListener onFailure"); 1049 }; 1050 @Override 1051 public void onPeriodChanged(int periodInMs) { 1052 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1053 } 1054 @Override 1055 public void onResults(WifiScanner.ScanData[] results) { 1056 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1057 } 1058 @Override 1059 public void onFullResult(ScanResult fullScanResult) { 1060 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1061 } 1062 1063 WifiScanListener() {} 1064 } 1065 1066 WifiScanListener mWifiScanListener = new WifiScanListener(); 1067 1068 1069 private class TetherStateChange { 1070 ArrayList<String> available; 1071 ArrayList<String> active; 1072 1073 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1074 available = av; 1075 active = ac; 1076 } 1077 } 1078 1079 public static class SimAuthRequestData { 1080 int networkId; 1081 int protocol; 1082 String ssid; 1083 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1084 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1085 String[] data; 1086 } 1087 1088 /** 1089 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1090 * {@link WifiManager#WIFI_STATE_DISABLING}, 1091 * {@link WifiManager#WIFI_STATE_ENABLED}, 1092 * {@link WifiManager#WIFI_STATE_ENABLING}, 1093 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1094 */ 1095 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1096 1097 /** 1098 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1099 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1100 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1101 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1102 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1103 */ 1104 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1105 1106 private static final int SCAN_REQUEST = 0; 1107 private static final String ACTION_START_SCAN = 1108 "com.android.server.WifiManager.action.START_SCAN"; 1109 1110 private static final int PNO_START_REQUEST = 0; 1111 private static final String ACTION_START_PNO = 1112 "com.android.server.WifiManager.action.START_PNO"; 1113 1114 /** 1115 * Keep track of whether WIFI is running. 1116 */ 1117 private boolean mIsRunning = false; 1118 1119 /** 1120 * Keep track of whether we last told the battery stats we had started. 1121 */ 1122 private boolean mReportedRunning = false; 1123 1124 /** 1125 * Most recently set source of starting WIFI. 1126 */ 1127 private final WorkSource mRunningWifiUids = new WorkSource(); 1128 1129 /** 1130 * The last reported UIDs that were responsible for starting WIFI. 1131 */ 1132 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1133 1134 private final IBatteryStats mBatteryStats; 1135 1136 private String mTcpBufferSizes = null; 1137 1138 // Used for debug and stats gathering 1139 private static int sScanAlarmIntentCount = 0; 1140 1141 private static final int sFrameworkMinScanIntervalSaneValue = 10000; 1142 1143 private boolean mPnoEnabled; 1144 private boolean mLazyRoamEnabled; 1145 private long mGScanStartTimeMilli; 1146 private long mGScanPeriodMilli; 1147 1148 private FrameworkFacade mFacade; 1149 1150 public WifiStateMachine(Context context, WifiTrafficPoller trafficPoller, 1151 FrameworkFacade facade, WifiMetrics wifiMetrics) { 1152 super("WifiStateMachine"); 1153 mWifiMetrics = wifiMetrics; 1154 mContext = context; 1155 mFacade = facade; 1156 mWifiNative = WifiNative.getWlanNativeInterface(); 1157 1158 // TODO refactor WifiNative use of context out into it's own class 1159 mWifiNative.initContext(mContext); 1160 mInterfaceName = mWifiNative.getInterfaceName(); 1161 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1162 mBatteryStats = IBatteryStats.Stub.asInterface(mFacade.getService( 1163 BatteryStats.SERVICE_NAME)); 1164 1165 IBinder b = mFacade.getService(Context.NETWORKMANAGEMENT_SERVICE); 1166 mNwService = INetworkManagementService.Stub.asInterface(b); 1167 1168 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1169 PackageManager.FEATURE_WIFI_DIRECT); 1170 1171 mWifiConfigStore = new WifiConfigStore(context, this, mWifiNative, facade); 1172 1173 mWifiMonitor = WifiMonitor.getInstance(); 1174 1175 boolean enableFirmwareLogs = mContext.getResources().getBoolean( 1176 R.bool.config_wifi_enable_wifi_firmware_debugging); 1177 1178 if (enableFirmwareLogs) { 1179 mWifiLogger = facade.makeRealLogger(this, mWifiNative); 1180 } else { 1181 mWifiLogger = facade.makeBaseLogger(); 1182 } 1183 1184 mWifiInfo = new WifiInfo(); 1185 mWifiQualifiedNetworkSelector = new WifiQualifiedNetworkSelector(mWifiConfigStore, mContext, 1186 mWifiInfo); 1187 mSupplicantStateTracker = mFacade.makeSupplicantStateTracker( 1188 context, this, mWifiConfigStore, getHandler()); 1189 1190 mLinkProperties = new LinkProperties(); 1191 1192 IBinder s1 = mFacade.getService(Context.WIFI_P2P_SERVICE); 1193 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1194 1195 mNetworkInfo.setIsAvailable(false); 1196 mLastBssid = null; 1197 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1198 mLastSignalLevel = -1; 1199 1200 mIpManager = mFacade.makeIpManager(mContext, mInterfaceName, new IpManagerCallback()); 1201 1202 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1203 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1204 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1205 1206 // Make sure the interval is not configured less than 10 seconds 1207 int period = mContext.getResources().getInteger( 1208 R.integer.config_wifi_framework_scan_interval); 1209 if (period < sFrameworkMinScanIntervalSaneValue) { 1210 period = sFrameworkMinScanIntervalSaneValue; 1211 } 1212 mDefaultFrameworkScanIntervalMs = period; 1213 1214 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1215 R.integer.config_wifi_no_network_periodic_scan_interval); 1216 1217 mBackgroundScanSupported = mContext.getResources().getBoolean( 1218 R.bool.config_wifi_background_scan_support); 1219 1220 mPrimaryDeviceType = mContext.getResources().getString( 1221 R.string.config_wifi_p2p_device_type); 1222 1223 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1224 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1225 1226 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1227 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1228 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1229 } 1230 1231 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1232 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1233 "but there is no default country code!! Resetting ..."); 1234 mRevertCountryCodeOnCellularLoss = false; 1235 } else if (mRevertCountryCodeOnCellularLoss) { 1236 logd("initializing with and will revert to " + mDefaultCountryCode + " on MCC loss"); 1237 } 1238 1239 if (mRevertCountryCodeOnCellularLoss) { 1240 Settings.Global.putString(mContext.getContentResolver(), 1241 Settings.Global.WIFI_COUNTRY_CODE, mDefaultCountryCode); 1242 } 1243 1244 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1245 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1246 1247 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1248 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1249 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1250 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1251 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1252 // TODO - needs to be a bit more dynamic 1253 mDfltNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1254 1255 mContext.registerReceiver( 1256 new BroadcastReceiver() { 1257 @Override 1258 public void onReceive(Context context, Intent intent) { 1259 ArrayList<String> available = intent.getStringArrayListExtra( 1260 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1261 ArrayList<String> active = intent.getStringArrayListExtra( 1262 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1263 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1264 } 1265 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1266 1267 mContext.registerReceiver( 1268 new BroadcastReceiver() { 1269 @Override 1270 public void onReceive(Context context, Intent intent) { 1271 sScanAlarmIntentCount++; // Used for debug only 1272 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1273 if (VDBG) 1274 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1275 } 1276 }, 1277 new IntentFilter(ACTION_START_SCAN)); 1278 1279 mContext.registerReceiver( 1280 new BroadcastReceiver() { 1281 @Override 1282 public void onReceive(Context context, Intent intent) { 1283 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1284 mRestartAutoJoinOffloadCounter, "pno alarm"); 1285 if (DBG) 1286 logd("PNO START ALARM sent"); 1287 } 1288 }, 1289 new IntentFilter(ACTION_START_PNO)); 1290 1291 1292 IntentFilter filter = new IntentFilter(); 1293 filter.addAction(Intent.ACTION_SCREEN_ON); 1294 filter.addAction(Intent.ACTION_SCREEN_OFF); 1295 mContext.registerReceiver( 1296 new BroadcastReceiver() { 1297 @Override 1298 public void onReceive(Context context, Intent intent) { 1299 String action = intent.getAction(); 1300 1301 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1302 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1303 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1304 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1305 } 1306 } 1307 }, filter); 1308 1309 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1310 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1311 new ContentObserver(getHandler()) { 1312 @Override 1313 public void onChange(boolean selfChange) { 1314 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1315 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1316 } 1317 }); 1318 1319 mContext.registerReceiver( 1320 new BroadcastReceiver() { 1321 @Override 1322 public void onReceive(Context context, Intent intent) { 1323 sendMessage(CMD_BOOT_COMPLETED); 1324 } 1325 }, 1326 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1327 1328 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1329 1330 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1331 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1332 1333 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1334 mSuspendWakeLock.setReferenceCounted(false); 1335 1336 mTcpBufferSizes = mContext.getResources().getString( 1337 com.android.internal.R.string.config_wifi_tcp_buffers); 1338 1339 addState(mDefaultState); 1340 addState(mInitialState, mDefaultState); 1341 addState(mSupplicantStartingState, mDefaultState); 1342 addState(mSupplicantStartedState, mDefaultState); 1343 addState(mDriverStartingState, mSupplicantStartedState); 1344 addState(mDriverStartedState, mSupplicantStartedState); 1345 addState(mScanModeState, mDriverStartedState); 1346 addState(mConnectModeState, mDriverStartedState); 1347 addState(mL2ConnectedState, mConnectModeState); 1348 addState(mObtainingIpState, mL2ConnectedState); 1349 addState(mConnectedState, mL2ConnectedState); 1350 addState(mRoamingState, mL2ConnectedState); 1351 addState(mDisconnectingState, mConnectModeState); 1352 addState(mDisconnectedState, mConnectModeState); 1353 addState(mWpsRunningState, mConnectModeState); 1354 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1355 addState(mDriverStoppingState, mSupplicantStartedState); 1356 addState(mDriverStoppedState, mSupplicantStartedState); 1357 addState(mSupplicantStoppingState, mDefaultState); 1358 addState(mSoftApStartingState, mDefaultState); 1359 addState(mSoftApStartedState, mDefaultState); 1360 addState(mTetheringState, mSoftApStartedState); 1361 addState(mTetheredState, mSoftApStartedState); 1362 addState(mUntetheringState, mSoftApStartedState); 1363 1364 setInitialState(mInitialState); 1365 1366 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1367 setLogOnlyTransitions(false); 1368 if (VDBG) setDbg(true); 1369 1370 //start the state machine 1371 start(); 1372 1373 mWifiMonitor.registerHandler(mInterfaceName, CMD_TARGET_BSSID, getHandler()); 1374 mWifiMonitor.registerHandler(mInterfaceName, CMD_ASSOCIATED_BSSID, getHandler()); 1375 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ANQP_DONE_EVENT, getHandler()); 1376 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ASSOCIATION_REJECTION_EVENT, 1377 getHandler()); 1378 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.AUTHENTICATION_FAILURE_EVENT, 1379 getHandler()); 1380 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.DRIVER_HUNG_EVENT, getHandler()); 1381 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_DONE_EVENT, getHandler()); 1382 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_START_EVENT, 1383 getHandler()); 1384 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.HS20_REMEDIATION_EVENT, 1385 getHandler()); 1386 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_CONNECTION_EVENT, 1387 getHandler()); 1388 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_DISCONNECTION_EVENT, 1389 getHandler()); 1390 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.RX_HS20_ANQP_ICON_EVENT, 1391 getHandler()); 1392 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_FAILED_EVENT, getHandler()); 1393 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_RESULTS_EVENT, getHandler()); 1394 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_REENABLED, getHandler()); 1395 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_TEMP_DISABLED, getHandler()); 1396 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_CONNECTION_EVENT, getHandler()); 1397 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_DISCONNECTION_EVENT, 1398 getHandler()); 1399 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT, 1400 getHandler()); 1401 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_IDENTITY, getHandler()); 1402 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_SIM_AUTH, getHandler()); 1403 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_FAIL_EVENT, getHandler()); 1404 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_OVERLAP_EVENT, getHandler()); 1405 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_SUCCESS_EVENT, getHandler()); 1406 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_TIMEOUT_EVENT, getHandler()); 1407 1408 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1409 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1410 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1411 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1412 } 1413 1414 class IpManagerCallback extends IpManager.Callback { 1415 @Override 1416 public boolean usingIpReachabilityMonitor() { 1417 return true; 1418 } 1419 1420 @Override 1421 public void onPreDhcpAction() { 1422 sendMessage(DhcpStateMachine.CMD_PRE_DHCP_ACTION); 1423 } 1424 1425 @Override 1426 public void onPostDhcpAction() { 1427 sendMessage(DhcpStateMachine.CMD_POST_DHCP_ACTION); 1428 } 1429 1430 @Override 1431 public void onNewDhcpResults(DhcpResults dhcpResults) { 1432 if (dhcpResults != null) { 1433 sendMessage(CMD_IPV4_PROVISIONING_SUCCESS, dhcpResults); 1434 } else { 1435 sendMessage(CMD_IPV4_PROVISIONING_FAILURE); 1436 } 1437 } 1438 1439 @Override 1440 public void onProvisioningSuccess(LinkProperties newLp) { 1441 sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); 1442 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 1443 } 1444 1445 @Override 1446 public void onProvisioningFailure(LinkProperties newLp) { 1447 sendMessage(CMD_IP_CONFIGURATION_LOST); 1448 } 1449 1450 @Override 1451 public void onLinkPropertiesChange(LinkProperties newLp) { 1452 sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); 1453 } 1454 1455 @Override 1456 public void onReachabilityLost(String logMsg) { 1457 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 1458 } 1459 } 1460 1461 private void stopIpManager() { 1462 /* Restore power save and suspend optimizations */ 1463 handlePostDhcpSetup(); 1464 mIpManager.stop(); 1465 } 1466 1467 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1468 Intent intent = new Intent(action, null); 1469 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1470 intent.setPackage("android"); 1471 return mFacade.getBroadcast(mContext, requestCode, intent, 0); 1472 } 1473 1474 private int mVerboseLoggingLevel = 0; 1475 1476 int getVerboseLoggingLevel() { 1477 return mVerboseLoggingLevel; 1478 } 1479 1480 void enableVerboseLogging(int verbose) { 1481 mVerboseLoggingLevel = verbose; 1482 if (verbose > 0) { 1483 DBG = true; 1484 VDBG = true; 1485 PDBG = true; 1486 mLogMessages = true; 1487 mWifiNative.setSupplicantLogLevel("DEBUG"); 1488 } else { 1489 DBG = false; 1490 VDBG = false; 1491 PDBG = false; 1492 mLogMessages = false; 1493 mWifiNative.setSupplicantLogLevel("INFO"); 1494 } 1495 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1496 mWifiMonitor.enableVerboseLogging(verbose); 1497 mWifiNative.enableVerboseLogging(verbose); 1498 mWifiConfigStore.enableVerboseLogging(verbose); 1499 mSupplicantStateTracker.enableVerboseLogging(verbose); 1500 mWifiQualifiedNetworkSelector.enableVerboseLogging(verbose); 1501 } 1502 1503 public void setHalBasedAutojoinOffload(int enabled) { 1504 // Shoult be used for debug only, triggered form developper settings 1505 // enabling HAl based PNO dynamically is not safe and not a normal operation 1506 mHalBasedPnoEnableInDevSettings = enabled > 0; 1507 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1508 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1509 sendMessage(CMD_DISCONNECT); 1510 } 1511 1512 int getHalBasedAutojoinOffload() { 1513 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1514 } 1515 1516 boolean useHalBasedAutoJoinOffload() { 1517 // all three settings need to be true: 1518 // - developper settings switch 1519 // - driver support 1520 // - config option 1521 return mHalBasedPnoEnableInDevSettings 1522 && mHalBasedPnoDriverSupported 1523 && mWifiConfigStore.enableHalBasedPno.get(); 1524 } 1525 1526 boolean allowFullBandScanAndAssociated() { 1527 1528 if (!getEnableAutoJoinWhenAssociated()) { 1529 if (DBG) { 1530 Log.e(TAG, "allowFullBandScanAndAssociated: " 1531 + " enableAutoJoinWhenAssociated : disallow"); 1532 } 1533 return false; 1534 } 1535 1536 if (mWifiInfo.txSuccessRate > 1537 mWifiConfigStore.maxTxPacketForFullScans 1538 || mWifiInfo.rxSuccessRate > 1539 mWifiConfigStore.maxRxPacketForFullScans) { 1540 if (DBG) { 1541 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1542 + mWifiInfo.txSuccessRate + " rx " 1543 + mWifiInfo.rxSuccessRate 1544 + " allow scan with traffic " + getAllowScansWithTraffic()); 1545 } 1546 // Too much traffic at the interface, hence no full band scan 1547 if (getAllowScansWithTraffic() == 0) { 1548 return false; 1549 } 1550 } 1551 1552 if (getCurrentState() != mConnectedState) { 1553 if (DBG) { 1554 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1555 } 1556 return false; 1557 } 1558 1559 return true; 1560 } 1561 1562 long mLastScanPermissionUpdate = 0; 1563 boolean mConnectedModeGScanOffloadStarted = false; 1564 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1565 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1566 // we want to throttle the GScan Stop->Start transition 1567 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1568 void updateAssociatedScanPermission() { 1569 1570 if (useHalBasedAutoJoinOffload()) { 1571 boolean allowed = allowFullBandScanAndAssociated(); 1572 1573 long now = System.currentTimeMillis(); 1574 if (mConnectedModeGScanOffloadStarted && !allowed) { 1575 if (DBG) { 1576 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1577 } 1578 stopPnoOffload(); 1579 stopGScan(" useHalBasedAutoJoinOffload"); 1580 } 1581 if (!mConnectedModeGScanOffloadStarted && allowed) { 1582 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1583 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1584 // to look for 5GHz BSSIDs and better networks 1585 if (DBG) { 1586 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1587 } 1588 startGScanConnectedModeOffload("updatePermission " 1589 + (now - mLastScanPermissionUpdate) + "ms"); 1590 mLastScanPermissionUpdate = now; 1591 } 1592 } 1593 } 1594 } 1595 1596 private int mAggressiveHandover = 0; 1597 1598 int getAggressiveHandover() { 1599 return mAggressiveHandover; 1600 } 1601 1602 void enableAggressiveHandover(int enabled) { 1603 mAggressiveHandover = enabled; 1604 } 1605 1606 public void clearANQPCache() { 1607 mWifiConfigStore.trimANQPCache(true); 1608 } 1609 1610 public void setAllowScansWithTraffic(int enabled) { 1611 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1612 } 1613 1614 public int getAllowScansWithTraffic() { 1615 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1616 } 1617 1618 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1619 boolean old_state = getEnableAutoJoinWhenAssociated(); 1620 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1621 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1622 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1623 null); 1624 } 1625 return true; 1626 } 1627 1628 public boolean getEnableAutoJoinWhenAssociated() { 1629 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1630 } 1631 /* 1632 * 1633 * Framework scan control 1634 */ 1635 1636 private boolean mAlarmEnabled = false; 1637 1638 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1639 1640 private void setScanAlarm(boolean enabled) { 1641 if (PDBG) { 1642 String state; 1643 if (enabled) state = "enabled"; else state = "disabled"; 1644 logd("setScanAlarm " + state 1645 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1646 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1647 } 1648 if (mBackgroundScanSupported == false) { 1649 // Scan alarm is only used for background scans if they are not 1650 // offloaded to the wifi chipset, hence enable the scan alarm 1651 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1652 enabled = true; 1653 } 1654 1655 if (enabled == mAlarmEnabled) return; 1656 if (enabled) { 1657 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1658 /* going to wake up the host processor to look for access points */ 1659 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1660 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1661 mScanIntent); 1662 mAlarmEnabled = true; 1663 } else { 1664 mAlarmManager.cancel(mScanIntent); 1665 mAlarmEnabled = false; 1666 } 1667 } 1668 1669 private void cancelDelayedScan() { 1670 mDelayedScanCounter.incrementAndGet(); 1671 } 1672 1673 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1674 ScanSettings settings, WorkSource workSource) { 1675 1676 if (counter != mDelayedScanCounter.get()) { 1677 return false; 1678 } 1679 if (restart) 1680 startDelayedScan(milli, settings, workSource); 1681 return true; 1682 } 1683 1684 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1685 if (milli <= 0) return; 1686 /** 1687 * The cases where the scan alarm should be run are : 1688 * - DisconnectedState && screenOn => used delayed timer 1689 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1690 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1691 * - ConnectedState && screenOn => used delayed timer 1692 */ 1693 1694 mDelayedScanCounter.incrementAndGet(); 1695 if (mScreenOn && 1696 (getCurrentState() == mDisconnectedState 1697 || getCurrentState() == mConnectedState)) { 1698 Bundle bundle = new Bundle(); 1699 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1700 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1701 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1702 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1703 mDelayedScanCounter.get(), bundle, milli); 1704 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1705 } else if (mBackgroundScanSupported == false 1706 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1707 setScanAlarm(true); 1708 if (DBG) logd("startDelayedScan start scan alarm -> " 1709 + mDelayedScanCounter + " milli " + milli); 1710 } else { 1711 if (DBG) logd("startDelayedScan unhandled -> " 1712 + mDelayedScanCounter + " milli " + milli); 1713 } 1714 } 1715 1716 private boolean setRandomMacOui() { 1717 String oui = mContext.getResources().getString(R.string.config_wifi_random_mac_oui); 1718 if (TextUtils.isEmpty(oui)) { 1719 oui = GOOGLE_OUI; 1720 } 1721 String[] ouiParts = oui.split("-"); 1722 byte[] ouiBytes = new byte[3]; 1723 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1724 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1725 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1726 1727 logd("Setting OUI to " + oui); 1728 return mWifiNative.setScanningMacOui(ouiBytes); 1729 } 1730 1731 /** 1732 * ****************************************************** 1733 * Methods exposed for public use 1734 * ****************************************************** 1735 */ 1736 1737 public Messenger getMessenger() { 1738 return new Messenger(getHandler()); 1739 } 1740 1741 /** 1742 * TODO: doc 1743 */ 1744 public boolean syncPingSupplicant(AsyncChannel channel) { 1745 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1746 boolean result = (resultMsg.arg1 != FAILURE); 1747 resultMsg.recycle(); 1748 return result; 1749 } 1750 1751 /** 1752 * When settings allowing making use of untrusted networks change, trigger a scan 1753 * so as to kick of autojoin. 1754 */ 1755 public void startScanForUntrustedSettingChange() { 1756 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1757 } 1758 1759 /** 1760 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1761 * given to callingUid. 1762 * 1763 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1764 * workSource is specified. 1765 * @param workSource If not null, blame is given to workSource. 1766 * @param settings Scan settings, see {@link ScanSettings}. 1767 */ 1768 public void startScan(int callingUid, int scanCounter, 1769 ScanSettings settings, WorkSource workSource) { 1770 Bundle bundle = new Bundle(); 1771 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1772 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1773 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1774 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1775 } 1776 1777 // called from BroadcastListener 1778 1779 /** 1780 * Start reading new scan data 1781 * Data comes in as: 1782 * "scancount=5\n" 1783 * "nextcount=5\n" 1784 * "apcount=3\n" 1785 * "trunc\n" (optional) 1786 * "bssid=...\n" 1787 * "ssid=...\n" 1788 * "freq=...\n" (in Mhz) 1789 * "level=...\n" 1790 * "dist=...\n" (in cm) 1791 * "distsd=...\n" (standard deviation, in cm) 1792 * "====" 1793 * "bssid=...\n" 1794 * etc 1795 * "====" 1796 * "bssid=...\n" 1797 * etc 1798 * "%%%%" 1799 * "apcount=2\n" 1800 * "bssid=...\n" 1801 * etc 1802 * "%%%% 1803 * etc 1804 * "----" 1805 */ 1806 private final static boolean DEBUG_PARSE = false; 1807 1808 private long mDisconnectedTimeStamp = 0; 1809 1810 public long getDisconnectedTimeMilli() { 1811 if (getCurrentState() == mDisconnectedState 1812 && mDisconnectedTimeStamp != 0) { 1813 long now_ms = System.currentTimeMillis(); 1814 return now_ms - mDisconnectedTimeStamp; 1815 } 1816 return 0; 1817 } 1818 1819 // Keeping track of scan requests 1820 private long lastStartScanTimeStamp = 0; 1821 private long lastScanDuration = 0; 1822 // Last connect attempt is used to prevent scan requests: 1823 // - for a period of 10 seconds after attempting to connect 1824 private long lastConnectAttemptTimestamp = 0; 1825 private Set<Integer> lastScanFreqs = null; 1826 1827 // For debugging, keep track of last message status handling 1828 // TODO, find an equivalent mechanism as part of parent class 1829 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1830 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1831 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1832 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1833 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1834 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1835 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1836 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1837 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1838 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1839 1840 private int messageHandlingStatus = 0; 1841 1842 //TODO: this is used only to track connection attempts, however the link state and packet per 1843 //TODO: second logic should be folded into that 1844 private boolean checkOrDeferScanAllowed(Message msg) { 1845 long now = System.currentTimeMillis(); 1846 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1847 Message dmsg = Message.obtain(msg); 1848 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1849 return false; 1850 } 1851 return true; 1852 } 1853 1854 private int mOnTime = 0; 1855 private int mTxTime = 0; 1856 private int mRxTime = 0; 1857 private int mOnTimeStartScan = 0; 1858 private int mTxTimeStartScan = 0; 1859 private int mRxTimeStartScan = 0; 1860 private int mOnTimeScan = 0; 1861 private int mTxTimeScan = 0; 1862 private int mRxTimeScan = 0; 1863 private int mOnTimeThisScan = 0; 1864 private int mTxTimeThisScan = 0; 1865 private int mRxTimeThisScan = 0; 1866 1867 private int mOnTimeScreenStateChange = 0; 1868 private int mOnTimeAtLastReport = 0; 1869 private long lastOntimeReportTimeStamp = 0; 1870 private long lastScreenStateChangeTimeStamp = 0; 1871 private int mOnTimeLastReport = 0; 1872 private int mTxTimeLastReport = 0; 1873 private int mRxTimeLastReport = 0; 1874 1875 private long lastLinkLayerStatsUpdate = 0; 1876 1877 String reportOnTime() { 1878 long now = System.currentTimeMillis(); 1879 StringBuilder sb = new StringBuilder(); 1880 // Report stats since last report 1881 int on = mOnTime - mOnTimeLastReport; 1882 mOnTimeLastReport = mOnTime; 1883 int tx = mTxTime - mTxTimeLastReport; 1884 mTxTimeLastReport = mTxTime; 1885 int rx = mRxTime - mRxTimeLastReport; 1886 mRxTimeLastReport = mRxTime; 1887 int period = (int) (now - lastOntimeReportTimeStamp); 1888 lastOntimeReportTimeStamp = now; 1889 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1890 // Report stats since Screen State Changed 1891 on = mOnTime - mOnTimeScreenStateChange; 1892 period = (int) (now - lastScreenStateChangeTimeStamp); 1893 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1894 return sb.toString(); 1895 } 1896 1897 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1898 WifiLinkLayerStats stats = null; 1899 if (mWifiLinkLayerStatsSupported > 0) { 1900 String name = "wlan0"; 1901 stats = mWifiNative.getWifiLinkLayerStats(name); 1902 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1903 mWifiLinkLayerStatsSupported -= 1; 1904 } else if (stats != null) { 1905 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1906 mOnTime = stats.on_time; 1907 mTxTime = stats.tx_time; 1908 mRxTime = stats.rx_time; 1909 mRunningBeaconCount = stats.beacon_rx; 1910 } 1911 } 1912 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1913 long mTxPkts = mFacade.getTxPackets(mInterfaceName); 1914 long mRxPkts = mFacade.getRxPackets(mInterfaceName); 1915 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1916 } else { 1917 mWifiInfo.updatePacketRates(stats); 1918 } 1919 if (useHalBasedAutoJoinOffload()) { 1920 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1921 } 1922 return stats; 1923 } 1924 1925 void startRadioScanStats() { 1926 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1927 if (stats != null) { 1928 mOnTimeStartScan = stats.on_time; 1929 mTxTimeStartScan = stats.tx_time; 1930 mRxTimeStartScan = stats.rx_time; 1931 mOnTime = stats.on_time; 1932 mTxTime = stats.tx_time; 1933 mRxTime = stats.rx_time; 1934 } 1935 } 1936 1937 void closeRadioScanStats() { 1938 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1939 if (stats != null) { 1940 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1941 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1942 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1943 mOnTimeScan += mOnTimeThisScan; 1944 mTxTimeScan += mTxTimeThisScan; 1945 mRxTimeScan += mRxTimeThisScan; 1946 } 1947 } 1948 1949 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1950 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1951 if (ret != 0) { 1952 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1953 "): hardware error " + ret); 1954 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1955 } else { 1956 return ConnectivityManager.PacketKeepalive.SUCCESS; 1957 } 1958 } 1959 1960 int stopWifiIPPacketOffload(int slot) { 1961 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1962 if (ret != 0) { 1963 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1964 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1965 } else { 1966 return ConnectivityManager.PacketKeepalive.SUCCESS; 1967 } 1968 } 1969 1970 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1971 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1972 } 1973 1974 int stopRssiMonitoringOffload() { 1975 return mWifiNative.stopRssiMonitoring(); 1976 } 1977 1978 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1979 private void noteScanStart(int callingUid, WorkSource workSource) { 1980 if (lastStartScanTimeStamp != 0) { 1981 noteScanEnd(); 1982 } 1983 long now = System.currentTimeMillis(); 1984 lastStartScanTimeStamp = now; 1985 lastScanDuration = 0; 1986 if (DBG) { 1987 String ts = String.format("[%,d ms]", now); 1988 if (workSource != null) { 1989 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1990 + " uid " + Integer.toString(callingUid)); 1991 } else { 1992 if (DBG) logd(ts + " noteScanstart no scan source" 1993 + " uid " + Integer.toString(callingUid)); 1994 } 1995 } 1996 startRadioScanStats(); 1997 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1998 && callingUid != SCAN_ALARM_SOURCE) 1999 || workSource != null)) { 2000 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 2001 2002 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 2003 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 2004 mScanWorkSource = new WorkSource(Process.WIFI_UID); 2005 } 2006 2007 try { 2008 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 2009 } catch (RemoteException e) { 2010 log(e.toString()); 2011 } 2012 } 2013 } 2014 2015 private void noteScanEnd() { 2016 closeRadioScanStats(); 2017 long now = System.currentTimeMillis(); 2018 if (lastStartScanTimeStamp != 0) { 2019 lastScanDuration = now - lastStartScanTimeStamp; 2020 } 2021 lastStartScanTimeStamp = 0; 2022 if (DBG) { 2023 String ts = String.format("[%,d ms]", now); 2024 if (mScanWorkSource != null) 2025 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 2026 + " onTime=" + mOnTimeThisScan); 2027 else 2028 logd(ts + " noteScanEnd no scan source" 2029 + " onTime=" + mOnTimeThisScan); 2030 } 2031 if (mScanWorkSource != null) { 2032 try { 2033 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 2034 } catch (RemoteException e) { 2035 log(e.toString()); 2036 } finally { 2037 mScanWorkSource = null; 2038 } 2039 } 2040 } 2041 2042 private void handleScanRequest(int type, Message message) { 2043 ScanSettings settings = null; 2044 WorkSource workSource = null; 2045 2046 // unbundle parameters 2047 Bundle bundle = (Bundle) message.obj; 2048 2049 if (bundle != null) { 2050 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 2051 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 2052 } 2053 2054 Set<Integer> freqs = null; 2055 if (settings != null && settings.channelSet != null) { 2056 freqs = new HashSet<Integer>(); 2057 for (WifiChannel channel : settings.channelSet) { 2058 freqs.add(channel.freqMHz); 2059 } 2060 } 2061 2062 // call wifi native to start the scan 2063 if (startScanNative(type, freqs)) { 2064 // only count battery consumption if scan request is accepted 2065 noteScanStart(message.arg1, workSource); 2066 // a full scan covers everything, clearing scan request buffer 2067 if (freqs == null) 2068 mBufferedScanMsg.clear(); 2069 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 2070 if (workSource != null) { 2071 // External worksource was passed along the scan request, 2072 // hence always send a broadcast 2073 mSendScanResultsBroadcast = true; 2074 } 2075 return; 2076 } 2077 2078 // if reach here, scan request is rejected 2079 2080 if (!mIsScanOngoing) { 2081 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2082 2083 // discard this request and pop up the next one 2084 if (mBufferedScanMsg.size() > 0) { 2085 sendMessage(mBufferedScanMsg.remove()); 2086 } 2087 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2088 } else if (!mIsFullScanOngoing) { 2089 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2090 // buffer the scan request to make sure specified channels will be scanned eventually 2091 if (freqs == null) 2092 mBufferedScanMsg.clear(); 2093 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2094 Message msg = obtainMessage(CMD_START_SCAN, 2095 message.arg1, message.arg2, bundle); 2096 mBufferedScanMsg.add(msg); 2097 } else { 2098 // if too many requests in buffer, combine them into a single full scan 2099 bundle = new Bundle(); 2100 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2101 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2102 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2103 mBufferedScanMsg.clear(); 2104 mBufferedScanMsg.add(msg); 2105 } 2106 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2107 } else { 2108 // mIsScanOngoing and mIsFullScanOngoing 2109 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2110 } 2111 } 2112 2113 2114 /** 2115 * return true iff scan request is accepted 2116 */ 2117 private boolean startScanNative(int type, Set<Integer> freqs) { 2118 if (mWifiNative.scan(type, freqs)) { 2119 mIsScanOngoing = true; 2120 mIsFullScanOngoing = (freqs == null); 2121 lastScanFreqs = freqs; 2122 return true; 2123 } 2124 return false; 2125 } 2126 2127 /** 2128 * TODO: doc 2129 */ 2130 public void setSupplicantRunning(boolean enable) { 2131 if (enable) { 2132 sendMessage(CMD_START_SUPPLICANT); 2133 } else { 2134 sendMessage(CMD_STOP_SUPPLICANT); 2135 } 2136 } 2137 2138 /** 2139 * TODO: doc 2140 */ 2141 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2142 if (enable) { 2143 sendMessage(CMD_START_AP, wifiConfig); 2144 } else { 2145 sendMessage(CMD_STOP_AP); 2146 } 2147 } 2148 2149 public void setWifiApConfiguration(WifiConfiguration config) { 2150 mWifiApConfigStore.setApConfiguration(config); 2151 } 2152 2153 public WifiConfiguration syncGetWifiApConfiguration() { 2154 return mWifiApConfigStore.getApConfiguration(); 2155 } 2156 2157 /** 2158 * TODO: doc 2159 */ 2160 public int syncGetWifiState() { 2161 return mWifiState.get(); 2162 } 2163 2164 /** 2165 * TODO: doc 2166 */ 2167 public String syncGetWifiStateByName() { 2168 switch (mWifiState.get()) { 2169 case WIFI_STATE_DISABLING: 2170 return "disabling"; 2171 case WIFI_STATE_DISABLED: 2172 return "disabled"; 2173 case WIFI_STATE_ENABLING: 2174 return "enabling"; 2175 case WIFI_STATE_ENABLED: 2176 return "enabled"; 2177 case WIFI_STATE_UNKNOWN: 2178 return "unknown state"; 2179 default: 2180 return "[invalid state]"; 2181 } 2182 } 2183 2184 /** 2185 * TODO: doc 2186 */ 2187 public int syncGetWifiApState() { 2188 return mWifiApState.get(); 2189 } 2190 2191 /** 2192 * TODO: doc 2193 */ 2194 public String syncGetWifiApStateByName() { 2195 switch (mWifiApState.get()) { 2196 case WIFI_AP_STATE_DISABLING: 2197 return "disabling"; 2198 case WIFI_AP_STATE_DISABLED: 2199 return "disabled"; 2200 case WIFI_AP_STATE_ENABLING: 2201 return "enabling"; 2202 case WIFI_AP_STATE_ENABLED: 2203 return "enabled"; 2204 case WIFI_AP_STATE_FAILED: 2205 return "failed"; 2206 default: 2207 return "[invalid state]"; 2208 } 2209 } 2210 2211 public boolean isConnected() { 2212 return getCurrentState() == mConnectedState; 2213 } 2214 2215 public boolean isDisconnected() { 2216 return getCurrentState() == mDisconnectedState; 2217 } 2218 2219 public boolean isSupplicantTransientState() { 2220 SupplicantState SupplicantState = mWifiInfo.getSupplicantState(); 2221 if (SupplicantState == SupplicantState.ASSOCIATING 2222 || SupplicantState == SupplicantState.AUTHENTICATING 2223 || SupplicantState == SupplicantState.FOUR_WAY_HANDSHAKE 2224 || SupplicantState == SupplicantState.GROUP_HANDSHAKE) { 2225 2226 if (DBG) { 2227 Log.d(TAG, "Supplicant is under transient state: " + SupplicantState); 2228 } 2229 return true; 2230 } else { 2231 if (DBG) { 2232 Log.d(TAG, "Supplicant is under steady state: " + SupplicantState); 2233 } 2234 } 2235 2236 return false; 2237 } 2238 2239 /** 2240 * Get status information for the current connection, if any. 2241 * 2242 * @return a {@link WifiInfo} object containing information about the current connection 2243 */ 2244 public WifiInfo syncRequestConnectionInfo() { 2245 return getWiFiInfoForUid(Binder.getCallingUid()); 2246 } 2247 2248 public WifiInfo getWifiInfo() { 2249 return mWifiInfo; 2250 } 2251 2252 public DhcpResults syncGetDhcpResults() { 2253 synchronized (mDhcpResultsLock) { 2254 return new DhcpResults(mDhcpResults); 2255 } 2256 } 2257 2258 /** 2259 * TODO: doc 2260 */ 2261 public void setDriverStart(boolean enable) { 2262 if (enable) { 2263 sendMessage(CMD_START_DRIVER); 2264 } else { 2265 sendMessage(CMD_STOP_DRIVER); 2266 } 2267 } 2268 2269 /** 2270 * TODO: doc 2271 */ 2272 public void setOperationalMode(int mode) { 2273 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2274 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2275 } 2276 2277 /** 2278 * TODO: doc 2279 */ 2280 public List<ScanResult> syncGetScanResultsList() { 2281 synchronized (mScanResultCache) { 2282 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2283 for (ScanDetail result : mScanResults) { 2284 scanList.add(new ScanResult(result.getScanResult())); 2285 } 2286 return scanList; 2287 } 2288 } 2289 2290 public int syncAddPasspointManagementObject(AsyncChannel channel, String managementObject) { 2291 Message resultMsg = 2292 channel.sendMessageSynchronously(CMD_ADD_PASSPOINT_MO, managementObject); 2293 int result = resultMsg.arg1; 2294 resultMsg.recycle(); 2295 return result; 2296 } 2297 2298 public int syncModifyPasspointManagementObject(AsyncChannel channel, String fqdn, 2299 List<PasspointManagementObjectDefinition> 2300 managementObjectDefinitions) { 2301 Bundle bundle = new Bundle(); 2302 bundle.putString("FQDN", fqdn); 2303 bundle.putParcelableList("MOS", managementObjectDefinitions); 2304 Message resultMsg = channel.sendMessageSynchronously(CMD_MODIFY_PASSPOINT_MO, bundle); 2305 int result = resultMsg.arg1; 2306 resultMsg.recycle(); 2307 return result; 2308 } 2309 2310 public boolean syncQueryPasspointIcon(AsyncChannel channel, long bssid, String fileName) { 2311 Bundle bundle = new Bundle(); 2312 bundle.putLong("BSSID", bssid); 2313 bundle.putString("FILENAME", fileName); 2314 Message resultMsg = channel.sendMessageSynchronously(CMD_QUERY_OSU_ICON, bundle); 2315 int result = resultMsg.arg1; 2316 resultMsg.recycle(); 2317 return result == 1; 2318 } 2319 2320 public int matchProviderWithCurrentNetwork(AsyncChannel channel, String fqdn) { 2321 Message resultMsg = channel.sendMessageSynchronously(CMD_MATCH_PROVIDER_NETWORK, fqdn); 2322 int result = resultMsg.arg1; 2323 resultMsg.recycle(); 2324 return result; 2325 } 2326 2327 /** 2328 * Deauthenticate and set the re-authentication hold off time for the current network 2329 * @param holdoff hold off time in milliseconds 2330 * @param ess set if the hold off pertains to an ESS rather than a BSS 2331 */ 2332 public void deauthenticateNetwork(AsyncChannel channel, long holdoff, boolean ess) { 2333 // TODO: This needs an implementation 2334 } 2335 2336 public void disableEphemeralNetwork(String SSID) { 2337 if (SSID != null) { 2338 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2339 } 2340 } 2341 2342 /** 2343 * Get unsynchronized pointer to scan result list 2344 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2345 */ 2346 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2347 return mScanResults; 2348 } 2349 2350 /** 2351 * Disconnect from Access Point 2352 */ 2353 public void disconnectCommand() { 2354 sendMessage(CMD_DISCONNECT); 2355 } 2356 2357 public void disconnectCommand(int uid, int reason) { 2358 sendMessage(CMD_DISCONNECT, uid, reason); 2359 } 2360 2361 /** 2362 * Initiate a reconnection to AP 2363 */ 2364 public void reconnectCommand() { 2365 sendMessage(CMD_RECONNECT); 2366 } 2367 2368 /** 2369 * Initiate a re-association to AP 2370 */ 2371 public void reassociateCommand() { 2372 sendMessage(CMD_REASSOCIATE); 2373 } 2374 2375 /** 2376 * Reload networks and then reconnect; helps load correct data for TLS networks 2377 */ 2378 2379 public void reloadTlsNetworksAndReconnect() { 2380 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2381 } 2382 2383 /** 2384 * Add a network synchronously 2385 * 2386 * @return network id of the new network 2387 */ 2388 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2389 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2390 int result = resultMsg.arg1; 2391 resultMsg.recycle(); 2392 return result; 2393 } 2394 2395 /** 2396 * Get configured networks synchronously 2397 * 2398 * @param channel 2399 * @return 2400 */ 2401 2402 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2403 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2404 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2405 resultMsg.recycle(); 2406 return result; 2407 } 2408 2409 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2410 Message resultMsg = channel.sendMessageSynchronously( 2411 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2412 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2413 resultMsg.recycle(); 2414 return result; 2415 } 2416 2417 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2418 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2419 return (WifiConfiguration) resultMsg.obj; 2420 } 2421 2422 /** 2423 * Get connection statistics synchronously 2424 * 2425 * @param channel 2426 * @return 2427 */ 2428 2429 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2430 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2431 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2432 resultMsg.recycle(); 2433 return result; 2434 } 2435 2436 /** 2437 * Get adaptors synchronously 2438 */ 2439 2440 public int syncGetSupportedFeatures(AsyncChannel channel) { 2441 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2442 int supportedFeatureSet = resultMsg.arg1; 2443 resultMsg.recycle(); 2444 return supportedFeatureSet; 2445 } 2446 2447 /** 2448 * Get link layers stats for adapter synchronously 2449 */ 2450 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2451 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2452 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2453 resultMsg.recycle(); 2454 return result; 2455 } 2456 2457 /** 2458 * Delete a network 2459 * 2460 * @param networkId id of the network to be removed 2461 */ 2462 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2463 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2464 boolean result = (resultMsg.arg1 != FAILURE); 2465 resultMsg.recycle(); 2466 return result; 2467 } 2468 2469 /** 2470 * Enable a network 2471 * 2472 * @param netId network id of the network 2473 * @param disableOthers true, if all other networks have to be disabled 2474 * @return {@code true} if the operation succeeds, {@code false} otherwise 2475 */ 2476 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2477 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2478 disableOthers ? 1 : 0); 2479 boolean result = (resultMsg.arg1 != FAILURE); 2480 resultMsg.recycle(); 2481 return result; 2482 } 2483 2484 /** 2485 * Disable a network 2486 * 2487 * @param netId network id of the network 2488 * @return {@code true} if the operation succeeds, {@code false} otherwise 2489 */ 2490 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2491 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2492 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2493 resultMsg.recycle(); 2494 return result; 2495 } 2496 2497 /** 2498 * Retrieves a WPS-NFC configuration token for the specified network 2499 * 2500 * @return a hex string representation of the WPS-NFC configuration token 2501 */ 2502 public String syncGetWpsNfcConfigurationToken(int netId) { 2503 return mWifiNative.getNfcWpsConfigurationToken(netId); 2504 } 2505 2506 void enableBackgroundScan(boolean enable) { 2507 if (enable) { 2508 mWifiConfigStore.enableAllNetworks(); 2509 } 2510 boolean ret = mWifiNative.enableBackgroundScan(enable); 2511 if (ret) { 2512 mLegacyPnoEnabled = enable; 2513 } else { 2514 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2515 } 2516 } 2517 2518 /** 2519 * Blacklist a BSSID. This will avoid the AP if there are 2520 * alternate APs to connect 2521 * 2522 * @param bssid BSSID of the network 2523 */ 2524 public void addToBlacklist(String bssid) { 2525 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2526 } 2527 2528 /** 2529 * Clear the blacklist list 2530 */ 2531 public void clearBlacklist() { 2532 sendMessage(CMD_CLEAR_BLACKLIST); 2533 } 2534 2535 public void enableRssiPolling(boolean enabled) { 2536 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2537 } 2538 2539 public void enableAllNetworks() { 2540 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2541 } 2542 2543 /** 2544 * Start filtering Multicast v4 packets 2545 */ 2546 public void startFilteringMulticastV4Packets() { 2547 mFilteringMulticastV4Packets.set(true); 2548 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2549 } 2550 2551 /** 2552 * Stop filtering Multicast v4 packets 2553 */ 2554 public void stopFilteringMulticastV4Packets() { 2555 mFilteringMulticastV4Packets.set(false); 2556 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2557 } 2558 2559 /** 2560 * Start filtering Multicast v4 packets 2561 */ 2562 public void startFilteringMulticastV6Packets() { 2563 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2564 } 2565 2566 /** 2567 * Stop filtering Multicast v4 packets 2568 */ 2569 public void stopFilteringMulticastV6Packets() { 2570 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2571 } 2572 2573 /** 2574 * Set high performance mode of operation. 2575 * Enabling would set active power mode and disable suspend optimizations; 2576 * disabling would set auto power mode and enable suspend optimizations 2577 * 2578 * @param enable true if enable, false otherwise 2579 */ 2580 public void setHighPerfModeEnabled(boolean enable) { 2581 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2582 } 2583 2584 /** 2585 * Set the country code 2586 * 2587 * @param countryCode following ISO 3166 format 2588 * @param persist {@code true} if the setting should be remembered. 2589 */ 2590 public synchronized void setCountryCode(String countryCode, boolean persist) { 2591 // If it's a good country code, apply after the current 2592 // wifi connection is terminated; ignore resetting of code 2593 // for now (it is unclear what the chipset should do when 2594 // country code is reset) 2595 2596 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2597 // else only when the new country code is different from the current one to set 2598 2599 if (TextUtils.isEmpty(countryCode)) { 2600 if (DBG) log("Ignoring resetting of country code"); 2601 } else { 2602 int countryCodeSequence = mCountryCodeSequence.get(); 2603 String currentCountryCode = getCurrentCountryCode(); 2604 if (countryCodeSequence == 0 2605 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2606 2607 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2608 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2609 countryCode); 2610 } 2611 } 2612 } 2613 2614 /** 2615 * reset the country code to default 2616 */ 2617 public synchronized void resetCountryCode() { 2618 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2619 logd("resetting country code to " + mDefaultCountryCode); 2620 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2621 } 2622 } 2623 2624 /** 2625 * reset cached SIM credential data 2626 */ 2627 public synchronized void resetSimAuthNetworks() { 2628 sendMessage(CMD_RESET_SIM_NETWORKS); 2629 } 2630 2631 2632 /** 2633 * Get Network object of current wifi network 2634 * @return Network object of current wifi network 2635 */ 2636 public Network getCurrentNetwork() { 2637 if (mNetworkAgent != null) { 2638 return new Network(mNetworkAgent.netId); 2639 } else { 2640 return null; 2641 } 2642 } 2643 2644 /** 2645 * Get the country code 2646 * 2647 * @return countryCode following ISO 3166 format 2648 */ 2649 public String getCurrentCountryCode() { 2650 return mFacade.getStringSetting(mContext, Settings.Global.WIFI_COUNTRY_CODE); 2651 } 2652 2653 /** 2654 * Set the operational frequency band 2655 * 2656 * @param band 2657 * @param persist {@code true} if the setting should be remembered. 2658 */ 2659 public void setFrequencyBand(int band, boolean persist) { 2660 if (persist) { 2661 Settings.Global.putInt(mContext.getContentResolver(), 2662 Settings.Global.WIFI_FREQUENCY_BAND, 2663 band); 2664 } 2665 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2666 } 2667 2668 /** 2669 * Enable TDLS for a specific MAC address 2670 */ 2671 public void enableTdls(String remoteMacAddress, boolean enable) { 2672 int enabler = enable ? 1 : 0; 2673 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2674 } 2675 2676 /** 2677 * Returns the operational frequency band 2678 */ 2679 public int getFrequencyBand() { 2680 return mFrequencyBand.get(); 2681 } 2682 2683 /** 2684 * Returns the wifi configuration file 2685 */ 2686 public String getConfigFile() { 2687 return mWifiConfigStore.getConfigFile(); 2688 } 2689 2690 /** 2691 * Send a message indicating bluetooth adapter connection state changed 2692 */ 2693 public void sendBluetoothAdapterStateChange(int state) { 2694 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2695 } 2696 2697 /** 2698 * Send a message indicating a package has been uninstalled. 2699 */ 2700 public void removeAppConfigs(String packageName, int uid) { 2701 // Build partial AppInfo manually - package may not exist in database any more 2702 ApplicationInfo ai = new ApplicationInfo(); 2703 ai.packageName = packageName; 2704 ai.uid = uid; 2705 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2706 } 2707 2708 /** 2709 * Send a message indicating a user has been removed. 2710 */ 2711 public void removeUserConfigs(int userId) { 2712 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2713 } 2714 2715 /** 2716 * Save configuration on supplicant 2717 * 2718 * @return {@code true} if the operation succeeds, {@code false} otherwise 2719 * <p/> 2720 * TODO: deprecate this 2721 */ 2722 public boolean syncSaveConfig(AsyncChannel channel) { 2723 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2724 boolean result = (resultMsg.arg1 != FAILURE); 2725 resultMsg.recycle(); 2726 return result; 2727 } 2728 2729 public void updateBatteryWorkSource(WorkSource newSource) { 2730 synchronized (mRunningWifiUids) { 2731 try { 2732 if (newSource != null) { 2733 mRunningWifiUids.set(newSource); 2734 } 2735 if (mIsRunning) { 2736 if (mReportedRunning) { 2737 // If the work source has changed since last time, need 2738 // to remove old work from battery stats. 2739 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2740 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2741 mRunningWifiUids); 2742 mLastRunningWifiUids.set(mRunningWifiUids); 2743 } 2744 } else { 2745 // Now being started, report it. 2746 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2747 mLastRunningWifiUids.set(mRunningWifiUids); 2748 mReportedRunning = true; 2749 } 2750 } else { 2751 if (mReportedRunning) { 2752 // Last reported we were running, time to stop. 2753 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2754 mLastRunningWifiUids.clear(); 2755 mReportedRunning = false; 2756 } 2757 } 2758 mWakeLock.setWorkSource(newSource); 2759 } catch (RemoteException ignore) { 2760 } 2761 } 2762 } 2763 2764 @Override 2765 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2766 super.dump(fd, pw, args); 2767 mSupplicantStateTracker.dump(fd, pw, args); 2768 pw.println("mLinkProperties " + mLinkProperties); 2769 pw.println("mWifiInfo " + mWifiInfo); 2770 pw.println("mDhcpResults " + mDhcpResults); 2771 pw.println("mNetworkInfo " + mNetworkInfo); 2772 pw.println("mLastSignalLevel " + mLastSignalLevel); 2773 pw.println("mLastBssid " + mLastBssid); 2774 pw.println("mLastNetworkId " + mLastNetworkId); 2775 pw.println("mOperationalMode " + mOperationalMode); 2776 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2777 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2778 pw.println("Supplicant status " + mWifiNative.status(true)); 2779 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2780 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2781 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2782 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2783 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2784 pw.println("SSID whitelist :" ); 2785 for (int i=0; i < mWhiteListedSsids.length; i++) { 2786 pw.println(" " + mWhiteListedSsids[i]); 2787 } 2788 } 2789 if (mNetworkFactory != null) { 2790 mNetworkFactory.dump(fd, pw, args); 2791 } else { 2792 pw.println("mNetworkFactory is not initialized"); 2793 } 2794 2795 if (mUntrustedNetworkFactory != null) { 2796 mUntrustedNetworkFactory.dump(fd, pw, args); 2797 } else { 2798 pw.println("mUntrustedNetworkFactory is not initialized"); 2799 } 2800 pw.println(); 2801 updateWifiMetrics(); 2802 mWifiMetrics.dump(fd, pw, args); 2803 pw.println(); 2804 mNetworkFactory.dump(fd, pw, args); 2805 mUntrustedNetworkFactory.dump(fd, pw, args); 2806 pw.println(); 2807 2808 mWifiConfigStore.dump(fd, pw, args); 2809 pw.println(); 2810 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2811 mWifiLogger.dump(fd, pw, args); 2812 mWifiQualifiedNetworkSelector.dump(fd, pw, args); 2813 } 2814 2815 public void handleUserSwitch(int userId) { 2816 sendMessage(CMD_USER_SWITCH, userId); 2817 } 2818 2819 /** 2820 * ****************************************************** 2821 * Internal private functions 2822 * ****************************************************** 2823 */ 2824 2825 private void logStateAndMessage(Message message, State state) { 2826 messageHandlingStatus = 0; 2827 if (mLogMessages) { 2828 logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); 2829 } 2830 } 2831 2832 /** 2833 * helper, prints the milli time since boot wi and w/o suspended time 2834 */ 2835 String printTime() { 2836 StringBuilder sb = new StringBuilder(); 2837 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2838 sb.append("/").append(SystemClock.elapsedRealtime()); 2839 return sb.toString(); 2840 } 2841 2842 /** 2843 * Return the additional string to be logged by LogRec, default 2844 * 2845 * @param msg that was processed 2846 * @return information to be logged as a String 2847 */ 2848 protected String getLogRecString(Message msg) { 2849 WifiConfiguration config; 2850 Long now; 2851 String report; 2852 String key; 2853 StringBuilder sb = new StringBuilder(); 2854 if (mScreenOn) { 2855 sb.append("!"); 2856 } 2857 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2858 sb.append("(").append(messageHandlingStatus).append(")"); 2859 } 2860 sb.append(smToString(msg)); 2861 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2862 sb.append(" uid=" + msg.sendingUid); 2863 } 2864 sb.append(" ").append(printTime()); 2865 switch (msg.what) { 2866 case CMD_STARTED_GSCAN_DBG: 2867 case CMD_STARTED_PNO_DBG: 2868 sb.append(" "); 2869 sb.append(Integer.toString(msg.arg1)); 2870 sb.append(" "); 2871 sb.append(Integer.toString(msg.arg2)); 2872 if (msg.obj != null) { 2873 sb.append(" " + (String)msg.obj); 2874 } 2875 break; 2876 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2877 sb.append(" "); 2878 sb.append(Integer.toString(msg.arg1)); 2879 sb.append(" "); 2880 sb.append(Integer.toString(msg.arg2)); 2881 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2882 if (msg.obj != null) { 2883 sb.append(" " + (String)msg.obj); 2884 } 2885 break; 2886 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2887 sb.append(" "); 2888 sb.append(Integer.toString(msg.arg1)); 2889 sb.append(" "); 2890 sb.append(Integer.toString(msg.arg2)); 2891 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2892 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2893 sb.append(" autojoinAllowed="); 2894 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2895 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2896 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2897 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2898 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2899 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2900 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2901 break; 2902 case CMD_PNO_NETWORK_FOUND: 2903 sb.append(" "); 2904 sb.append(Integer.toString(msg.arg1)); 2905 sb.append(" "); 2906 sb.append(Integer.toString(msg.arg2)); 2907 if (msg.obj != null) { 2908 ScanResult[] results = (ScanResult[])msg.obj; 2909 for (int i = 0; i < results.length; i++) { 2910 sb.append(" ").append(results[i].SSID).append(" "); 2911 sb.append(results[i].frequency); 2912 sb.append(" ").append(results[i].level); 2913 } 2914 } 2915 break; 2916 case CMD_START_SCAN: 2917 now = System.currentTimeMillis(); 2918 sb.append(" "); 2919 sb.append(Integer.toString(msg.arg1)); 2920 sb.append(" "); 2921 sb.append(Integer.toString(msg.arg2)); 2922 sb.append(" ic="); 2923 sb.append(Integer.toString(sScanAlarmIntentCount)); 2924 if (msg.obj != null) { 2925 Bundle bundle = (Bundle) msg.obj; 2926 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2927 if (request != 0) { 2928 sb.append(" proc(ms):").append(now - request); 2929 } 2930 } 2931 if (mIsScanOngoing) sb.append(" onGoing"); 2932 if (mIsFullScanOngoing) sb.append(" full"); 2933 if (lastStartScanTimeStamp != 0) { 2934 sb.append(" started:").append(lastStartScanTimeStamp); 2935 sb.append(",").append(now - lastStartScanTimeStamp); 2936 } 2937 if (lastScanDuration != 0) { 2938 sb.append(" dur:").append(lastScanDuration); 2939 } 2940 sb.append(" cnt=").append(mDelayedScanCounter); 2941 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2942 sb.append(" f=").append(mWifiInfo.getFrequency()); 2943 sb.append(" sc=").append(mWifiInfo.score); 2944 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2945 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2946 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2947 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2948 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2949 if (lastScanFreqs != null) { 2950 sb.append(" list="); 2951 for(int freq : lastScanFreqs) { 2952 sb.append(freq).append(","); 2953 } 2954 } else { 2955 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2956 } 2957 report = reportOnTime(); 2958 if (report != null) { 2959 sb.append(" ").append(report); 2960 } 2961 break; 2962 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2963 sb.append(" "); 2964 sb.append(Integer.toString(msg.arg1)); 2965 sb.append(" "); 2966 sb.append(Integer.toString(msg.arg2)); 2967 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2968 if (stateChangeResult != null) { 2969 sb.append(stateChangeResult.toString()); 2970 } 2971 break; 2972 case WifiManager.SAVE_NETWORK: 2973 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2974 sb.append(" "); 2975 sb.append(Integer.toString(msg.arg1)); 2976 sb.append(" "); 2977 sb.append(Integer.toString(msg.arg2)); 2978 if (lastSavedConfigurationAttempt != null) { 2979 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2980 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2981 if (lastSavedConfigurationAttempt.hiddenSSID) { 2982 sb.append(" hidden"); 2983 } 2984 if (lastSavedConfigurationAttempt.preSharedKey != null 2985 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2986 sb.append(" hasPSK"); 2987 } 2988 if (lastSavedConfigurationAttempt.ephemeral) { 2989 sb.append(" ephemeral"); 2990 } 2991 if (lastSavedConfigurationAttempt.selfAdded) { 2992 sb.append(" selfAdded"); 2993 } 2994 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2995 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2996 } 2997 break; 2998 case WifiManager.FORGET_NETWORK: 2999 sb.append(" "); 3000 sb.append(Integer.toString(msg.arg1)); 3001 sb.append(" "); 3002 sb.append(Integer.toString(msg.arg2)); 3003 if (lastForgetConfigurationAttempt != null) { 3004 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 3005 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 3006 if (lastForgetConfigurationAttempt.hiddenSSID) { 3007 sb.append(" hidden"); 3008 } 3009 if (lastForgetConfigurationAttempt.preSharedKey != null) { 3010 sb.append(" hasPSK"); 3011 } 3012 if (lastForgetConfigurationAttempt.ephemeral) { 3013 sb.append(" ephemeral"); 3014 } 3015 if (lastForgetConfigurationAttempt.selfAdded) { 3016 sb.append(" selfAdded"); 3017 } 3018 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 3019 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 3020 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3021 lastForgetConfigurationAttempt.getNetworkSelectionStatus(); 3022 sb.append(" ajst=").append( 3023 netWorkSelectionStatus.getNetworkStatusString()); 3024 } 3025 break; 3026 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 3027 sb.append(" "); 3028 sb.append(Integer.toString(msg.arg1)); 3029 sb.append(" "); 3030 sb.append(Integer.toString(msg.arg2)); 3031 String bssid = (String) msg.obj; 3032 if (bssid != null && bssid.length() > 0) { 3033 sb.append(" "); 3034 sb.append(bssid); 3035 } 3036 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 3037 break; 3038 case WifiMonitor.SCAN_RESULTS_EVENT: 3039 sb.append(" "); 3040 sb.append(Integer.toString(msg.arg1)); 3041 sb.append(" "); 3042 sb.append(Integer.toString(msg.arg2)); 3043 if (mScanResults != null) { 3044 sb.append(" found="); 3045 sb.append(mScanResults.size()); 3046 } 3047 sb.append(" known=").append(mNumScanResultsKnown); 3048 sb.append(" got=").append(mNumScanResultsReturned); 3049 if (lastScanDuration != 0) { 3050 sb.append(" dur:").append(lastScanDuration); 3051 } 3052 if (mOnTime != 0) { 3053 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 3054 sb.append(",").append(mOnTime); 3055 } 3056 if (mTxTime != 0) { 3057 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 3058 sb.append(",").append(mTxTime); 3059 } 3060 if (mRxTime != 0) { 3061 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 3062 sb.append(",").append(mRxTime); 3063 } 3064 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3065 sb.append(String.format(" con=%d", mConnectionRequests)); 3066 key = mWifiConfigStore.getLastSelectedConfiguration(); 3067 if (key != null) { 3068 sb.append(" last=").append(key); 3069 } 3070 break; 3071 case WifiMonitor.SCAN_FAILED_EVENT: 3072 break; 3073 case WifiMonitor.NETWORK_CONNECTION_EVENT: 3074 sb.append(" "); 3075 sb.append(Integer.toString(msg.arg1)); 3076 sb.append(" "); 3077 sb.append(Integer.toString(msg.arg2)); 3078 sb.append(" ").append(mLastBssid); 3079 sb.append(" nid=").append(mLastNetworkId); 3080 config = getCurrentWifiConfiguration(); 3081 if (config != null) { 3082 sb.append(" ").append(config.configKey()); 3083 } 3084 key = mWifiConfigStore.getLastSelectedConfiguration(); 3085 if (key != null) { 3086 sb.append(" last=").append(key); 3087 } 3088 break; 3089 case CMD_TARGET_BSSID: 3090 case CMD_ASSOCIATED_BSSID: 3091 sb.append(" "); 3092 sb.append(Integer.toString(msg.arg1)); 3093 sb.append(" "); 3094 sb.append(Integer.toString(msg.arg2)); 3095 if (msg.obj != null) { 3096 sb.append(" BSSID=").append((String) msg.obj); 3097 } 3098 if (mTargetRoamBSSID != null) { 3099 sb.append(" Target=").append(mTargetRoamBSSID); 3100 } 3101 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3102 break; 3103 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 3104 if (msg.obj != null) { 3105 sb.append(" ").append((String) msg.obj); 3106 } 3107 sb.append(" nid=").append(msg.arg1); 3108 sb.append(" reason=").append(msg.arg2); 3109 if (mLastBssid != null) { 3110 sb.append(" lastbssid=").append(mLastBssid); 3111 } 3112 if (mWifiInfo.getFrequency() != -1) { 3113 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3114 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3115 } 3116 if (linkDebouncing) { 3117 sb.append(" debounce"); 3118 } 3119 break; 3120 case WifiMonitor.SSID_TEMP_DISABLED: 3121 case WifiMonitor.SSID_REENABLED: 3122 sb.append(" nid=").append(msg.arg1); 3123 if (msg.obj != null) { 3124 sb.append(" ").append((String) msg.obj); 3125 } 3126 config = getCurrentWifiConfiguration(); 3127 if (config != null) { 3128 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3129 config.getNetworkSelectionStatus(); 3130 sb.append(" cur=").append(config.configKey()); 3131 sb.append(" ajst=").append(netWorkSelectionStatus.getNetworkStatusString()); 3132 if (config.selfAdded) { 3133 sb.append(" selfAdded"); 3134 } 3135 if (config.status != 0) { 3136 sb.append(" st=").append(config.status); 3137 sb.append(" rs=").append( 3138 netWorkSelectionStatus.getNetworkDisableReasonString()); 3139 } 3140 if (config.lastConnected != 0) { 3141 now = System.currentTimeMillis(); 3142 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 3143 } 3144 if (mLastBssid != null) { 3145 sb.append(" lastbssid=").append(mLastBssid); 3146 } 3147 if (mWifiInfo.getFrequency() != -1) { 3148 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3149 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3150 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 3151 } 3152 } 3153 break; 3154 case CMD_RSSI_POLL: 3155 case CMD_UNWANTED_NETWORK: 3156 case WifiManager.RSSI_PKTCNT_FETCH: 3157 sb.append(" "); 3158 sb.append(Integer.toString(msg.arg1)); 3159 sb.append(" "); 3160 sb.append(Integer.toString(msg.arg2)); 3161 if (mWifiInfo.getSSID() != null) 3162 if (mWifiInfo.getSSID() != null) 3163 sb.append(" ").append(mWifiInfo.getSSID()); 3164 if (mWifiInfo.getBSSID() != null) 3165 sb.append(" ").append(mWifiInfo.getBSSID()); 3166 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3167 sb.append(" f=").append(mWifiInfo.getFrequency()); 3168 sb.append(" sc=").append(mWifiInfo.score); 3169 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 3170 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 3171 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 3172 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 3173 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 3174 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3175 report = reportOnTime(); 3176 if (report != null) { 3177 sb.append(" ").append(report); 3178 } 3179 if (wifiScoringReport != null) { 3180 sb.append(wifiScoringReport); 3181 } 3182 if (mConnectedModeGScanOffloadStarted) { 3183 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3184 } else { 3185 sb.append(" offload-stopped"); 3186 } 3187 break; 3188 case CMD_AUTO_CONNECT: 3189 case WifiManager.CONNECT_NETWORK: 3190 sb.append(" "); 3191 sb.append(Integer.toString(msg.arg1)); 3192 sb.append(" "); 3193 sb.append(Integer.toString(msg.arg2)); 3194 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3195 if (config != null) { 3196 sb.append(" ").append(config.configKey()); 3197 if (config.visibility != null) { 3198 sb.append(" ").append(config.visibility.toString()); 3199 } 3200 } 3201 if (mTargetRoamBSSID != null) { 3202 sb.append(" ").append(mTargetRoamBSSID); 3203 } 3204 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3205 config = getCurrentWifiConfiguration(); 3206 if (config != null) { 3207 sb.append(config.configKey()); 3208 if (config.visibility != null) { 3209 sb.append(" ").append(config.visibility.toString()); 3210 } 3211 } 3212 break; 3213 case CMD_AUTO_ROAM: 3214 sb.append(" "); 3215 sb.append(Integer.toString(msg.arg1)); 3216 sb.append(" "); 3217 sb.append(Integer.toString(msg.arg2)); 3218 ScanResult result = (ScanResult) msg.obj; 3219 if (result != null) { 3220 now = System.currentTimeMillis(); 3221 sb.append(" bssid=").append(result.BSSID); 3222 sb.append(" rssi=").append(result.level); 3223 sb.append(" freq=").append(result.frequency); 3224 if (result.seen > 0 && result.seen < now) { 3225 sb.append(" seen=").append(now - result.seen); 3226 } else { 3227 // Somehow the timestamp for this scan result is inconsistent 3228 sb.append(" !seen=").append(result.seen); 3229 } 3230 } 3231 if (mTargetRoamBSSID != null) { 3232 sb.append(" ").append(mTargetRoamBSSID); 3233 } 3234 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3235 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3236 break; 3237 case CMD_ADD_OR_UPDATE_NETWORK: 3238 sb.append(" "); 3239 sb.append(Integer.toString(msg.arg1)); 3240 sb.append(" "); 3241 sb.append(Integer.toString(msg.arg2)); 3242 if (msg.obj != null) { 3243 config = (WifiConfiguration) msg.obj; 3244 sb.append(" ").append(config.configKey()); 3245 sb.append(" prio=").append(config.priority); 3246 sb.append(" status=").append(config.status); 3247 if (config.BSSID != null) { 3248 sb.append(" ").append(config.BSSID); 3249 } 3250 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3251 if (curConfig != null) { 3252 if (curConfig.configKey().equals(config.configKey())) { 3253 sb.append(" is current"); 3254 } else { 3255 sb.append(" current=").append(curConfig.configKey()); 3256 sb.append(" prio=").append(curConfig.priority); 3257 sb.append(" status=").append(curConfig.status); 3258 } 3259 } 3260 } 3261 break; 3262 case WifiManager.DISABLE_NETWORK: 3263 case CMD_ENABLE_NETWORK: 3264 sb.append(" "); 3265 sb.append(Integer.toString(msg.arg1)); 3266 sb.append(" "); 3267 sb.append(Integer.toString(msg.arg2)); 3268 key = mWifiConfigStore.getLastSelectedConfiguration(); 3269 if (key != null) { 3270 sb.append(" last=").append(key); 3271 } 3272 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3273 if (config != null && (key == null || !config.configKey().equals(key))) { 3274 sb.append(" target=").append(key); 3275 } 3276 break; 3277 case CMD_GET_CONFIGURED_NETWORKS: 3278 sb.append(" "); 3279 sb.append(Integer.toString(msg.arg1)); 3280 sb.append(" "); 3281 sb.append(Integer.toString(msg.arg2)); 3282 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3283 break; 3284 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3285 sb.append(" "); 3286 sb.append(Integer.toString(msg.arg1)); 3287 sb.append(" "); 3288 sb.append(Integer.toString(msg.arg2)); 3289 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3290 sb.append(",").append(mWifiInfo.txBad); 3291 sb.append(",").append(mWifiInfo.txRetries); 3292 break; 3293 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3294 sb.append(" "); 3295 sb.append(Integer.toString(msg.arg1)); 3296 sb.append(" "); 3297 sb.append(Integer.toString(msg.arg2)); 3298 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3299 sb.append(" OK "); 3300 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3301 sb.append(" FAIL "); 3302 } 3303 if (mLinkProperties != null) { 3304 sb.append(" "); 3305 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3306 } 3307 break; 3308 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3309 sb.append(" "); 3310 sb.append(Integer.toString(msg.arg1)); 3311 sb.append(" "); 3312 sb.append(Integer.toString(msg.arg2)); 3313 if (msg.obj != null) { 3314 NetworkInfo info = (NetworkInfo) msg.obj; 3315 NetworkInfo.State state = info.getState(); 3316 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3317 if (state != null) { 3318 sb.append(" st=").append(state); 3319 } 3320 if (detailedState != null) { 3321 sb.append("/").append(detailedState); 3322 } 3323 } 3324 break; 3325 case CMD_IP_CONFIGURATION_LOST: 3326 int count = -1; 3327 WifiConfiguration c = getCurrentWifiConfiguration(); 3328 if (c != null) { 3329 count = c.getNetworkSelectionStatus().getDisableReasonCounter( 3330 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 3331 } 3332 sb.append(" "); 3333 sb.append(Integer.toString(msg.arg1)); 3334 sb.append(" "); 3335 sb.append(Integer.toString(msg.arg2)); 3336 sb.append(" failures: "); 3337 sb.append(Integer.toString(count)); 3338 sb.append("/"); 3339 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3340 if (mWifiInfo.getBSSID() != null) { 3341 sb.append(" ").append(mWifiInfo.getBSSID()); 3342 } 3343 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3344 break; 3345 case CMD_UPDATE_LINKPROPERTIES: 3346 sb.append(" "); 3347 sb.append(Integer.toString(msg.arg1)); 3348 sb.append(" "); 3349 sb.append(Integer.toString(msg.arg2)); 3350 if (mLinkProperties != null) { 3351 sb.append(" "); 3352 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3353 } 3354 break; 3355 case CMD_IP_REACHABILITY_LOST: 3356 if (msg.obj != null) { 3357 sb.append(" ").append((String) msg.obj); 3358 } 3359 break; 3360 case CMD_SET_COUNTRY_CODE: 3361 sb.append(" "); 3362 sb.append(Integer.toString(msg.arg1)); 3363 sb.append(" "); 3364 sb.append(Integer.toString(msg.arg2)); 3365 if (msg.obj != null) { 3366 sb.append(" ").append((String) msg.obj); 3367 } 3368 break; 3369 case CMD_ROAM_WATCHDOG_TIMER: 3370 sb.append(" "); 3371 sb.append(Integer.toString(msg.arg1)); 3372 sb.append(" "); 3373 sb.append(Integer.toString(msg.arg2)); 3374 sb.append(" cur=").append(roamWatchdogCount); 3375 break; 3376 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3377 sb.append(" "); 3378 sb.append(Integer.toString(msg.arg1)); 3379 sb.append(" "); 3380 sb.append(Integer.toString(msg.arg2)); 3381 sb.append(" cur=").append(disconnectingWatchdogCount); 3382 break; 3383 case CMD_START_RSSI_MONITORING_OFFLOAD: 3384 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3385 case CMD_RSSI_THRESHOLD_BREACH: 3386 sb.append(" rssi="); 3387 sb.append(Integer.toString(msg.arg1)); 3388 sb.append(" thresholds="); 3389 sb.append(Arrays.toString(mRssiRanges)); 3390 break; 3391 case CMD_USER_SWITCH: 3392 sb.append(" userId="); 3393 sb.append(Integer.toString(msg.arg1)); 3394 break; 3395 case CMD_IPV4_PROVISIONING_SUCCESS: 3396 sb.append(" "); 3397 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3398 sb.append("DHCP_OK"); 3399 } else if (msg.arg1 == CMD_STATIC_IP_SUCCESS) { 3400 sb.append("STATIC_OK"); 3401 } else { 3402 sb.append(Integer.toString(msg.arg1)); 3403 } 3404 break; 3405 case CMD_IPV4_PROVISIONING_FAILURE: 3406 sb.append(" "); 3407 if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3408 sb.append("DHCP_FAIL"); 3409 } else if (msg.arg1 == CMD_STATIC_IP_FAILURE) { 3410 sb.append("STATIC_FAIL"); 3411 } else { 3412 sb.append(Integer.toString(msg.arg1)); 3413 } 3414 break; 3415 default: 3416 sb.append(" "); 3417 sb.append(Integer.toString(msg.arg1)); 3418 sb.append(" "); 3419 sb.append(Integer.toString(msg.arg2)); 3420 break; 3421 } 3422 3423 return sb.toString(); 3424 } 3425 3426 private void stopPnoOffload() { 3427 3428 // clear the PNO list 3429 if (!mWifiNative.setPnoList(null, WifiStateMachine.this)) { 3430 Log.e(TAG, "Failed to stop pno"); 3431 } 3432 3433 } 3434 3435 3436 private boolean configureSsidWhiteList() { 3437 3438 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3439 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3440 return true; 3441 } 3442 3443 if (!mWifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3444 loge("configureSsidWhiteList couldnt program SSID list, size " 3445 + mWhiteListedSsids.length); 3446 return false; 3447 } 3448 3449 logd("configureSsidWhiteList success"); 3450 return true; 3451 } 3452 3453 // In associated more, lazy roam will be looking for 5GHz roam candidate 3454 //Fixme: This is for network selection offload , whole function need to be re-written according 3455 // to the new design 3456 private boolean configureLazyRoam() { 3457 /*boolean status; 3458 if (!useHalBasedAutoJoinOffload()) return false; 3459 3460 WifiNative.WifiLazyRoamParams params = new WifiNative.WifiLazyRoamParams(); 3461 //params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3462 //params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3463 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3464 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3465 params.A_band_max_boost = 65; 3466 params.lazy_roam_hysteresis = 25; 3467 params.alert_roam_rssi_trigger = -75; 3468 3469 if (DBG) { 3470 Log.e(TAG, "configureLazyRoam " + params.toString()); 3471 } 3472 3473 if (!mWifiNative.setLazyRoam(true, params)) { 3474 3475 Log.e(TAG, "configureLazyRoam couldnt program params"); 3476 3477 return false; 3478 } 3479 if (DBG) { 3480 Log.e(TAG, "configureLazyRoam success"); 3481 }*/ 3482 return true; 3483 } 3484 3485 // In associated more, lazy roam will be looking for 5GHz roam candidate 3486 private boolean stopLazyRoam() { 3487 boolean status; 3488 if (!useHalBasedAutoJoinOffload()) return false; 3489 if (DBG) { 3490 Log.e(TAG, "stopLazyRoam"); 3491 } 3492 return mWifiNative.setLazyRoam(false, null); 3493 } 3494 3495 private boolean startGScanConnectedModeOffload(String reason) { 3496 if (DBG) { 3497 if (reason == null) { 3498 reason = ""; 3499 } 3500 logd("startGScanConnectedModeOffload " + reason); 3501 } 3502 stopGScan("startGScanConnectedModeOffload " + reason); 3503 if (!mScreenOn) return false; 3504 3505 if (USE_PAUSE_SCANS) { 3506 mWifiNative.pauseScan(); 3507 } 3508 mPnoEnabled = configurePno(); 3509 if (mPnoEnabled == false) { 3510 if (USE_PAUSE_SCANS) { 3511 mWifiNative.restartScan(); 3512 } 3513 return false; 3514 } 3515 mLazyRoamEnabled = configureLazyRoam(); 3516 if (mLazyRoamEnabled == false) { 3517 if (USE_PAUSE_SCANS) { 3518 mWifiNative.restartScan(); 3519 } 3520 return false; 3521 } 3522 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3523 configureSsidWhiteList(); 3524 } 3525 if (!startConnectedGScan(reason)) { 3526 if (USE_PAUSE_SCANS) { 3527 mWifiNative.restartScan(); 3528 } 3529 return false; 3530 } 3531 if (USE_PAUSE_SCANS) { 3532 mWifiNative.restartScan(); 3533 } 3534 mConnectedModeGScanOffloadStarted = true; 3535 if (DBG) { 3536 logd("startGScanConnectedModeOffload success"); 3537 } 3538 return true; 3539 } 3540 3541 private boolean startGScanDisconnectedModeOffload(String reason) { 3542 if (DBG) { 3543 logd("startGScanDisconnectedModeOffload " + reason); 3544 } 3545 stopGScan("startGScanDisconnectedModeOffload " + reason); 3546 if (USE_PAUSE_SCANS) { 3547 mWifiNative.pauseScan(); 3548 } 3549 mPnoEnabled = configurePno(); 3550 if (mPnoEnabled == false) { 3551 if (USE_PAUSE_SCANS) { 3552 mWifiNative.restartScan(); 3553 } 3554 return false; 3555 } 3556 if (!startDisconnectedGScan(reason)) { 3557 if (USE_PAUSE_SCANS) { 3558 mWifiNative.restartScan(); 3559 } 3560 return false; 3561 } 3562 if (USE_PAUSE_SCANS) { 3563 mWifiNative.restartScan(); 3564 } 3565 return true; 3566 } 3567 3568 private boolean configurePno() { 3569 if (!useHalBasedAutoJoinOffload()) return false; 3570 3571 if (mWifiScanner == null) { 3572 log("configurePno: mWifiScanner is null "); 3573 return true; 3574 } 3575 3576 List<WifiNative.WifiPnoNetwork> llist = null; 3577 //TODO: add getPnoList in WifiQualifiedNetworkSelector 3578 //mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3579 if (llist == null || llist.size() == 0) { 3580 stopPnoOffload(); 3581 log("configurePno: empty PNO list "); 3582 return true; 3583 } 3584 if (DBG) { 3585 log("configurePno: got llist size " + llist.size()); 3586 } 3587 3588 // first program the network we want to look for thru the pno API 3589 WifiNative.WifiPnoNetwork list[] 3590 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3591 3592 if (!mWifiNative.setPnoList(list, WifiStateMachine.this)) { 3593 Log.e(TAG, "Failed to set pno, length = " + list.length); 3594 return false; 3595 } 3596 3597 if (true) { 3598 StringBuilder sb = new StringBuilder(); 3599 for (WifiNative.WifiPnoNetwork network : list) { 3600 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3601 sb.append(" flags="); 3602 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3603 sb.append("] "); 3604 3605 } 3606 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3607 } 3608 return true; 3609 } 3610 3611 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3612 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3613 3614 private boolean startConnectedGScan(String reason) { 3615 // send a scan background request so as to kick firmware 3616 // 5GHz roaming and autojoin 3617 // We do this only if screen is on 3618 WifiScanner.ScanSettings settings; 3619 3620 if (mPnoEnabled || mLazyRoamEnabled) { 3621 settings = new WifiScanner.ScanSettings(); 3622 settings.band = WifiScanner.WIFI_BAND_BOTH; 3623 long now = System.currentTimeMillis(); 3624 3625 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3626 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3627 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3628 } else { 3629 mGScanStartTimeMilli = now; 3630 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3631 // if we start offload with short interval, then reconfigure it after a given 3632 // duration of time so as to reduce the scan frequency 3633 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3634 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3635 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3636 (long)delay); 3637 mRestartAutoJoinOffloadCounter++; 3638 } 3639 mGScanPeriodMilli = settings.periodInMs; 3640 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3641 if (DBG) { 3642 log("startConnectedScan: settings band="+ settings.band 3643 + " period=" + settings.periodInMs); 3644 } 3645 3646 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3647 if (true) { 3648 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3649 } 3650 } 3651 return true; 3652 } 3653 3654 private boolean startDisconnectedGScan(String reason) { 3655 // send a scan background request so as to kick firmware 3656 // PNO 3657 // This is done in both screen On and screen Off modes 3658 WifiScanner.ScanSettings settings; 3659 3660 if (mWifiScanner == null) { 3661 log("startDisconnectedGScan: no wifi scanner"); 3662 return false; 3663 } 3664 3665 if (mPnoEnabled || mLazyRoamEnabled) { 3666 settings = new WifiScanner.ScanSettings(); 3667 settings.band = WifiScanner.WIFI_BAND_BOTH; 3668 long now = System.currentTimeMillis(); 3669 3670 3671 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3672 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3673 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3674 } else { 3675 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3676 mGScanStartTimeMilli = now; 3677 // if we start offload with short interval, then reconfigure it after a given 3678 // duration of time so as to reduce the scan frequency 3679 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3680 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3681 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3682 (long)delay); 3683 mRestartAutoJoinOffloadCounter++; 3684 } 3685 mGScanPeriodMilli = settings.periodInMs; 3686 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3687 if (DBG) { 3688 log("startDisconnectedScan: settings band="+ settings.band 3689 + " period=" + settings.periodInMs); 3690 } 3691 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3692 if (true) { 3693 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3694 } 3695 } 3696 return true; 3697 } 3698 3699 private boolean stopGScan(String reason) { 3700 mGScanStartTimeMilli = 0; 3701 mGScanPeriodMilli = 0; 3702 if (mWifiScanner != null) { 3703 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3704 } 3705 mConnectedModeGScanOffloadStarted = false; 3706 if (true) { 3707 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3708 } 3709 return true; 3710 } 3711 3712 private void handleScreenStateChanged(boolean screenOn) { 3713 mScreenOn = screenOn; 3714 if (PDBG) { 3715 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3716 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3717 + " state " + getCurrentState().getName() 3718 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3719 } 3720 enableRssiPolling(screenOn); 3721 if (mUserWantsSuspendOpt.get()) { 3722 if (screenOn) { 3723 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3724 } else { 3725 // Allow 2s for suspend optimizations to be set 3726 mSuspendWakeLock.acquire(2000); 3727 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3728 } 3729 } 3730 mScreenBroadcastReceived.set(true); 3731 3732 getWifiLinkLayerStats(false); 3733 mOnTimeScreenStateChange = mOnTime; 3734 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3735 3736 cancelDelayedScan(); 3737 3738 if (screenOn) { 3739 enableBackgroundScan(false); 3740 setScanAlarm(false); 3741 clearBlacklist(); 3742 3743 fullBandConnectedTimeIntervalMilli 3744 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3745 // In either Disconnectedstate or ConnectedState, 3746 // start the scan alarm so as to enable autojoin 3747 if (getCurrentState() == mConnectedState 3748 && allowFullBandScanAndAssociated()) { 3749 if (useHalBasedAutoJoinOffload()) { 3750 startGScanConnectedModeOffload("screenOnConnected"); 3751 } else { 3752 // Scan after 500ms 3753 startDelayedScan(500, null, null); 3754 } 3755 } else if (getCurrentState() == mDisconnectedState) { 3756 if (useHalBasedAutoJoinOffload()) { 3757 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3758 } else { 3759 // Scan after 500ms 3760 startDelayedScan(500, null, null); 3761 } 3762 } 3763 } else { 3764 if (getCurrentState() == mDisconnectedState) { 3765 // Screen Off and Disconnected and chipset doesn't support scan offload 3766 // => start scan alarm 3767 // Screen Off and Disconnected and chipset does support scan offload 3768 // => will use scan offload (i.e. background scan) 3769 if (useHalBasedAutoJoinOffload()) { 3770 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3771 } else { 3772 if (!mBackgroundScanSupported) { 3773 setScanAlarm(true); 3774 } else { 3775 if (!mIsScanOngoing) { 3776 enableBackgroundScan(true); 3777 } 3778 } 3779 } 3780 } else { 3781 enableBackgroundScan(false); 3782 if (useHalBasedAutoJoinOffload()) { 3783 // don't try stop Gscan if it is not enabled 3784 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3785 } 3786 } 3787 } 3788 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3789 3790 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3791 } 3792 3793 private void checkAndSetConnectivityInstance() { 3794 if (mCm == null) { 3795 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3796 } 3797 } 3798 3799 private boolean startTethering(ArrayList<String> available) { 3800 3801 boolean wifiAvailable = false; 3802 3803 checkAndSetConnectivityInstance(); 3804 3805 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3806 3807 for (String intf : available) { 3808 for (String regex : wifiRegexs) { 3809 if (intf.matches(regex)) { 3810 3811 InterfaceConfiguration ifcg = null; 3812 try { 3813 ifcg = mNwService.getInterfaceConfig(intf); 3814 if (ifcg != null) { 3815 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3816 ifcg.setLinkAddress(new LinkAddress( 3817 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3818 ifcg.setInterfaceUp(); 3819 3820 mNwService.setInterfaceConfig(intf, ifcg); 3821 } 3822 } catch (Exception e) { 3823 loge("Error configuring interface " + intf + ", :" + e); 3824 return false; 3825 } 3826 3827 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3828 loge("Error tethering on " + intf); 3829 return false; 3830 } 3831 mTetherInterfaceName = intf; 3832 return true; 3833 } 3834 } 3835 } 3836 // We found no interfaces to tether 3837 return false; 3838 } 3839 3840 private void stopTethering() { 3841 3842 checkAndSetConnectivityInstance(); 3843 3844 /* Clear the interface config to allow dhcp correctly configure new 3845 ip settings */ 3846 InterfaceConfiguration ifcg = null; 3847 try { 3848 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3849 if (ifcg != null) { 3850 ifcg.setLinkAddress( 3851 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3852 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3853 } 3854 } catch (Exception e) { 3855 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3856 } 3857 3858 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3859 loge("Untether initiate failed!"); 3860 } 3861 } 3862 3863 private boolean isWifiTethered(ArrayList<String> active) { 3864 3865 checkAndSetConnectivityInstance(); 3866 3867 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3868 for (String intf : active) { 3869 for (String regex : wifiRegexs) { 3870 if (intf.matches(regex)) { 3871 return true; 3872 } 3873 } 3874 } 3875 // We found no interfaces that are tethered 3876 return false; 3877 } 3878 3879 /** 3880 * Set the country code from the system setting value, if any. 3881 */ 3882 private void initializeCountryCode() { 3883 String countryCode = getCurrentCountryCode(); 3884 if (countryCode != null && !countryCode.isEmpty()) { 3885 setCountryCode(countryCode, false); 3886 } else { 3887 //use driver default 3888 } 3889 } 3890 3891 /** 3892 * Set the frequency band from the system setting value, if any. 3893 */ 3894 private void setFrequencyBand() { 3895 int band = mFacade.getIntegerSetting(mContext, 3896 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3897 3898 if (mWifiNative.setBand(band)) { 3899 mFrequencyBand.set(band); 3900 if (PDBG) { 3901 logd("done set frequency band " + band); 3902 mWifiQualifiedNetworkSelector.setUserPreferredBand(band); 3903 } 3904 } else { 3905 loge("Failed to set frequency band " + band); 3906 } 3907 } 3908 3909 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3910 if (DBG) { 3911 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3912 + " -want " + mUserWantsSuspendOpt.get() 3913 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3914 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3915 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3916 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3917 } 3918 //mWifiNative.setSuspendOptimizations(enabled); 3919 3920 if (enabled) { 3921 mSuspendOptNeedsDisabled &= ~reason; 3922 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3923 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3924 if (DBG) { 3925 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3926 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3927 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3928 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3929 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3930 } 3931 mWifiNative.setSuspendOptimizations(true); 3932 } 3933 } else { 3934 mSuspendOptNeedsDisabled |= reason; 3935 mWifiNative.setSuspendOptimizations(false); 3936 } 3937 } 3938 3939 private void setSuspendOptimizations(int reason, boolean enabled) { 3940 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3941 if (enabled) { 3942 mSuspendOptNeedsDisabled &= ~reason; 3943 } else { 3944 mSuspendOptNeedsDisabled |= reason; 3945 } 3946 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3947 } 3948 3949 private void setWifiState(int wifiState) { 3950 final int previousWifiState = mWifiState.get(); 3951 3952 try { 3953 if (wifiState == WIFI_STATE_ENABLED) { 3954 mBatteryStats.noteWifiOn(); 3955 } else if (wifiState == WIFI_STATE_DISABLED) { 3956 mBatteryStats.noteWifiOff(); 3957 } 3958 } catch (RemoteException e) { 3959 loge("Failed to note battery stats in wifi"); 3960 } 3961 3962 mWifiState.set(wifiState); 3963 3964 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3965 3966 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3967 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3968 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3969 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3970 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3971 } 3972 3973 private void setWifiApState(int wifiApState, int reason) { 3974 final int previousWifiApState = mWifiApState.get(); 3975 3976 try { 3977 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3978 mBatteryStats.noteWifiOn(); 3979 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3980 mBatteryStats.noteWifiOff(); 3981 } 3982 } catch (RemoteException e) { 3983 loge("Failed to note battery stats in wifi"); 3984 } 3985 3986 // Update state 3987 mWifiApState.set(wifiApState); 3988 3989 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3990 3991 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3992 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3993 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3994 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3995 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3996 //only set reason number when softAP start failed 3997 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3998 } 3999 4000 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4001 } 4002 4003 private void setScanResults() { 4004 mNumScanResultsKnown = 0; 4005 mNumScanResultsReturned = 0; 4006 4007 ArrayList<ScanDetail> scanResults = mWifiNative.getScanResults(); 4008 4009 if (scanResults.isEmpty()) { 4010 mScanResults = new ArrayList<>(); 4011 return; 4012 } 4013 4014 mWifiConfigStore.trimANQPCache(false); 4015 4016 boolean connected = mLastBssid != null; 4017 long activeBssid = 0L; 4018 if (connected) { 4019 try { 4020 activeBssid = Utils.parseMac(mLastBssid); 4021 } catch (IllegalArgumentException iae) { 4022 connected = false; 4023 } 4024 } 4025 4026 synchronized (mScanResultCache) { 4027 ScanDetail activeScanDetail = null; 4028 mScanResults = scanResults; 4029 mNumScanResultsReturned = mScanResults.size(); 4030 for (ScanDetail resultDetail : mScanResults) { 4031 mScanResultCache.put(resultDetail.getNetworkDetail(), resultDetail); 4032 if (connected && resultDetail.getNetworkDetail().getBSSID() == activeBssid) { 4033 if (activeScanDetail == null 4034 || activeScanDetail.getNetworkDetail().getBSSID() != activeBssid 4035 || activeScanDetail.getNetworkDetail().getANQPElements() == null) { 4036 activeScanDetail = resultDetail; 4037 } 4038 } 4039 } 4040 mActiveScanDetail = activeScanDetail; 4041 } 4042 if (mNumScanResultsReturned > 0) { 4043 mWifiMetrics.incrementNonEmptyScanResultCount(); 4044 } else { 4045 mWifiMetrics.incrementEmptyScanResultCount(); 4046 } 4047 4048 if (linkDebouncing) { 4049 // If debouncing, we dont re-select a SSID or BSSID hence 4050 // there is no need to call the network selection code 4051 // in WifiAutoJoinController, instead, 4052 // just try to reconnect to the same SSID by triggering a roam 4053 // The third parameter 1 means roam not from network selection but debouncing 4054 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4055 } else { 4056 WifiConfiguration candidate = 4057 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false, 4058 mAllowUntrustedConnections, mScanResults, linkDebouncing, isConnected(), 4059 isDisconnected(), isSupplicantTransientState()); 4060 tryToConnectToNetwork(candidate); 4061 } 4062 } 4063 4064 /** 4065 * Set whether connections to untrusted connections are allowed. 4066 */ 4067 void setAllowUntrustedConnections(boolean allow) { 4068 boolean changed = (mAllowUntrustedConnections != allow); 4069 mAllowUntrustedConnections = allow; 4070 if (changed) { 4071 // Trigger a scan so as to reattempt autojoin 4072 startScanForUntrustedSettingChange(); 4073 } 4074 } 4075 4076 public ScanDetail getActiveScanDetail() { 4077 synchronized (mScanResultCache) { 4078 return mActiveScanDetail; 4079 } 4080 } 4081 4082 /* 4083 * Fetch RSSI, linkspeed, and frequency on current connection 4084 */ 4085 private void fetchRssiLinkSpeedAndFrequencyNative() { 4086 Integer newRssi = null; 4087 Integer newLinkSpeed = null; 4088 Integer newFrequency = null; 4089 4090 String signalPoll = mWifiNative.signalPoll(); 4091 4092 if (signalPoll != null) { 4093 String[] lines = signalPoll.split("\n"); 4094 for (String line : lines) { 4095 String[] prop = line.split("="); 4096 if (prop.length < 2) continue; 4097 try { 4098 if (prop[0].equals("RSSI")) { 4099 newRssi = Integer.parseInt(prop[1]); 4100 } else if (prop[0].equals("LINKSPEED")) { 4101 newLinkSpeed = Integer.parseInt(prop[1]); 4102 } else if (prop[0].equals("FREQUENCY")) { 4103 newFrequency = Integer.parseInt(prop[1]); 4104 } 4105 } catch (NumberFormatException e) { 4106 //Ignore, defaults on rssi and linkspeed are assigned 4107 } 4108 } 4109 } 4110 4111 if (PDBG) { 4112 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi + 4113 " linkspeed=" + newLinkSpeed + " freq=" + newFrequency); 4114 } 4115 4116 if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4117 // screen out invalid values 4118 /* some implementations avoid negative values by adding 256 4119 * so we need to adjust for that here. 4120 */ 4121 if (newRssi > 0) newRssi -= 256; 4122 mWifiInfo.setRssi(newRssi); 4123 /* 4124 * Rather then sending the raw RSSI out every time it 4125 * changes, we precalculate the signal level that would 4126 * be displayed in the status bar, and only send the 4127 * broadcast if that much more coarse-grained number 4128 * changes. This cuts down greatly on the number of 4129 * broadcasts, at the cost of not informing others 4130 * interested in RSSI of all the changes in signal 4131 * level. 4132 */ 4133 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4134 if (newSignalLevel != mLastSignalLevel) { 4135 updateCapabilities(getCurrentWifiConfiguration()); 4136 sendRssiChangeBroadcast(newRssi); 4137 } 4138 mLastSignalLevel = newSignalLevel; 4139 } else { 4140 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4141 updateCapabilities(getCurrentWifiConfiguration()); 4142 } 4143 4144 if (newLinkSpeed != null) { 4145 mWifiInfo.setLinkSpeed(newLinkSpeed); 4146 } 4147 if (newFrequency != null && newFrequency > 0) { 4148 if (ScanResult.is5GHz(newFrequency)) { 4149 mWifiConnectionStatistics.num5GhzConnected++; 4150 } 4151 if (ScanResult.is24GHz(newFrequency)) { 4152 mWifiConnectionStatistics.num24GhzConnected++; 4153 } 4154 mWifiInfo.setFrequency(newFrequency); 4155 } 4156 mWifiConfigStore.updateConfiguration(mWifiInfo); 4157 } 4158 4159 /** 4160 * Determine if we need to switch network: 4161 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4162 * - match the uregncy of the switch versus the packet usage at the interface 4163 */ 4164 boolean shouldSwitchNetwork(int networkDelta) { 4165 int delta; 4166 if (networkDelta <= 0) { 4167 return false; 4168 } 4169 delta = networkDelta; 4170 if (mWifiInfo != null) { 4171 if (!getEnableAutoJoinWhenAssociated() 4172 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4173 // If AutoJoin while associated is not enabled, 4174 // we should never switch network when already associated 4175 delta = -1000; 4176 } else { 4177 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4178 // TODO: at the interface. We should also discriminate between ucast and mcast, 4179 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4180 // TODO: broadcasts 4181 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4182 delta -= 999; 4183 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4184 delta -= 6; 4185 } 4186 logd("shouldSwitchNetwork " 4187 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4188 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4189 + " delta " + networkDelta + " -> " + delta); 4190 } 4191 } else { 4192 logd("shouldSwitchNetwork " 4193 + " delta " + networkDelta + " -> " + delta); 4194 } 4195 if (delta > 0) { 4196 return true; 4197 } 4198 return false; 4199 } 4200 4201 // Polling has completed, hence we wont have a score anymore 4202 private void cleanWifiScore() { 4203 mWifiInfo.txBadRate = 0; 4204 mWifiInfo.txSuccessRate = 0; 4205 mWifiInfo.txRetriesRate = 0; 4206 mWifiInfo.rxSuccessRate = 0; 4207 } 4208 4209 int mBadLinkspeedcount = 0; 4210 4211 // For debug, provide information about the last scoring operation 4212 String wifiScoringReport = null; 4213 4214 private void calculateWifiScore(WifiLinkLayerStats stats) { 4215 StringBuilder sb = new StringBuilder(); 4216 4217 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4218 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4219 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4220 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4221 < mWifiConfigStore.badLinkSpeed5); 4222 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4223 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4224 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4225 >= mWifiConfigStore.goodLinkSpeed5); 4226 4227 if (isBadLinkspeed) { 4228 if (mBadLinkspeedcount < 6) 4229 mBadLinkspeedcount++; 4230 } else { 4231 if (mBadLinkspeedcount > 0) 4232 mBadLinkspeedcount--; 4233 } 4234 4235 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4236 if (isGoodLinkspeed) sb.append(" gl"); 4237 4238 /** 4239 * We want to make sure that we use the 24GHz RSSI thresholds if 4240 * there are 2.4GHz scan results 4241 * otherwise we end up lowering the score based on 5GHz values 4242 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4243 * We also might unblacklist the configuation based on 2.4GHz 4244 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4245 */ 4246 boolean use24Thresholds = false; 4247 boolean homeNetworkBoost = false; 4248 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4249 ScanDetailCache scanDetailCache = 4250 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4251 if (currentConfiguration != null && scanDetailCache != null) { 4252 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4253 if (currentConfiguration.visibility != null) { 4254 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4255 && currentConfiguration.visibility.rssi24 4256 >= (currentConfiguration.visibility.rssi5 - 2)) { 4257 use24Thresholds = true; 4258 } 4259 } 4260 if (scanDetailCache.size() <= 6 4261 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4262 && currentConfiguration.allowedKeyManagement. 4263 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4264 // A PSK network with less than 6 known BSSIDs 4265 // This is most likely a home network and thus we want to stick to wifi more 4266 homeNetworkBoost = true; 4267 } 4268 } 4269 if (homeNetworkBoost) sb.append(" hn"); 4270 if (use24Thresholds) sb.append(" u24"); 4271 4272 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4273 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4274 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4275 4276 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4277 4278 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 4279 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 4280 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 4281 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdMinimumRssi5.get()); 4282 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 4283 || (!is24GHz && mWifiInfo.getRssi() 4284 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 4285 4286 if (isBadRSSI) sb.append(" br"); 4287 if (isLowRSSI) sb.append(" lr"); 4288 if (isHighRSSI) sb.append(" hr"); 4289 4290 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4291 if (currentConfiguration != null && 4292 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4293 if (isBadRSSI) { 4294 currentConfiguration.numTicksAtBadRSSI++; 4295 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4296 // We remained associated for a compound amount of time while passing 4297 // traffic, hence loose the corresponding user triggered disabled stats 4298 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4299 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4300 } 4301 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4302 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4303 } 4304 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4305 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4306 } 4307 currentConfiguration.numTicksAtBadRSSI = 0; 4308 } 4309 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4310 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4311 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4312 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4313 score = score - 5; 4314 penalizedDueToUserTriggeredDisconnect = 1; 4315 sb.append(" p1"); 4316 } 4317 } else if (isLowRSSI) { 4318 currentConfiguration.numTicksAtLowRSSI++; 4319 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4320 // We remained associated for a compound amount of time while passing 4321 // traffic, hence loose the corresponding user triggered disabled stats 4322 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4323 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4324 } 4325 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4326 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4327 } 4328 currentConfiguration.numTicksAtLowRSSI = 0; 4329 } 4330 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4331 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4332 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4333 score = score - 5; 4334 penalizedDueToUserTriggeredDisconnect = 2; 4335 sb.append(" p2"); 4336 } 4337 } else if (!isHighRSSI) { 4338 currentConfiguration.numTicksAtNotHighRSSI++; 4339 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4340 // We remained associated for a compound amount of time while passing 4341 // traffic, hence loose the corresponding user triggered disabled stats 4342 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4343 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4344 } 4345 currentConfiguration.numTicksAtNotHighRSSI = 0; 4346 } 4347 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4348 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4349 score = score - 5; 4350 penalizedDueToUserTriggeredDisconnect = 3; 4351 sb.append(" p3"); 4352 } 4353 } 4354 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4355 currentConfiguration.numTicksAtLowRSSI, 4356 currentConfiguration.numTicksAtNotHighRSSI)); 4357 } 4358 4359 if (PDBG) { 4360 String rssiStatus = ""; 4361 if (isBadRSSI) rssiStatus += " badRSSI "; 4362 else if (isHighRSSI) rssiStatus += " highRSSI "; 4363 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4364 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4365 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4366 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4367 + " score=" + Integer.toString(mWifiInfo.score) 4368 + rssiStatus 4369 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4370 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4371 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4372 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4373 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4374 } 4375 4376 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4377 && (isBadRSSI || isLowRSSI)) { 4378 // Link is stuck 4379 if (mWifiInfo.linkStuckCount < 5) 4380 mWifiInfo.linkStuckCount += 1; 4381 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4382 if (PDBG) logd(" bad link -> stuck count =" 4383 + Integer.toString(mWifiInfo.linkStuckCount)); 4384 } else if (mWifiInfo.txBadRate < 0.3) { 4385 if (mWifiInfo.linkStuckCount > 0) 4386 mWifiInfo.linkStuckCount -= 1; 4387 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4388 if (PDBG) logd(" good link -> stuck count =" 4389 + Integer.toString(mWifiInfo.linkStuckCount)); 4390 } 4391 4392 sb.append(String.format(" [%d", score)); 4393 4394 if (mWifiInfo.linkStuckCount > 1) { 4395 // Once link gets stuck for more than 3 seconds, start reducing the score 4396 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4397 } 4398 sb.append(String.format(",%d", score)); 4399 4400 if (isBadLinkspeed) { 4401 score -= 4; 4402 if (PDBG) { 4403 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4404 + " score=" + Integer.toString(score)); 4405 } 4406 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4407 score += 4; // So as bad rssi alone dont kill us 4408 } 4409 sb.append(String.format(",%d", score)); 4410 4411 if (isBadRSSI) { 4412 if (mWifiInfo.badRssiCount < 7) 4413 mWifiInfo.badRssiCount += 1; 4414 } else if (isLowRSSI) { 4415 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4416 if (mWifiInfo.badRssiCount > 0) { 4417 // Decrement bad Rssi count 4418 mWifiInfo.badRssiCount -= 1; 4419 } 4420 } else { 4421 mWifiInfo.badRssiCount = 0; 4422 mWifiInfo.lowRssiCount = 0; 4423 } 4424 4425 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4426 sb.append(String.format(",%d", score)); 4427 4428 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4429 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4430 + " --> score " + Integer.toString(score)); 4431 4432 4433 if (isHighRSSI) { 4434 score += 5; 4435 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4436 } 4437 sb.append(String.format(",%d]", score)); 4438 4439 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4440 4441 //sanitize boundaries 4442 if (score > NetworkAgent.WIFI_BASE_SCORE) 4443 score = NetworkAgent.WIFI_BASE_SCORE; 4444 if (score < 0) 4445 score = 0; 4446 4447 //report score 4448 if (score != mWifiInfo.score) { 4449 if (DBG) { 4450 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4451 } 4452 mWifiInfo.score = score; 4453 if (mNetworkAgent != null) { 4454 mNetworkAgent.sendNetworkScore(score); 4455 } 4456 } 4457 wifiScoringReport = sb.toString(); 4458 } 4459 4460 public double getTxPacketRate() { 4461 if (mWifiInfo != null) { 4462 return mWifiInfo.txSuccessRate; 4463 } 4464 return -1; 4465 } 4466 4467 public double getRxPacketRate() { 4468 if (mWifiInfo != null) { 4469 return mWifiInfo.rxSuccessRate; 4470 } 4471 return -1; 4472 } 4473 4474 /** 4475 * Fetch TX packet counters on current connection 4476 */ 4477 private void fetchPktcntNative(RssiPacketCountInfo info) { 4478 String pktcntPoll = mWifiNative.pktcntPoll(); 4479 4480 if (pktcntPoll != null) { 4481 String[] lines = pktcntPoll.split("\n"); 4482 for (String line : lines) { 4483 String[] prop = line.split("="); 4484 if (prop.length < 2) continue; 4485 try { 4486 if (prop[0].equals("TXGOOD")) { 4487 info.txgood = Integer.parseInt(prop[1]); 4488 } else if (prop[0].equals("TXBAD")) { 4489 info.txbad = Integer.parseInt(prop[1]); 4490 } 4491 } catch (NumberFormatException e) { 4492 // Ignore 4493 } 4494 } 4495 } 4496 } 4497 4498 private void notifyLinkProperties() { 4499 // TODO: Add setters for TCP buffer sizes and HTTP proxy to IpManager. 4500 // Once that is done delete this. 4501 updateLinkProperties(new LinkProperties(mLinkProperties)); 4502 } 4503 4504 private void updateLinkProperties(LinkProperties newLp) { 4505 // HTTP proxy and TCP buffer sizes are locally configured. 4506 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4507 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4508 newLp.setTcpBufferSizes(mTcpBufferSizes); 4509 } 4510 4511 if (!newLp.equals(mLinkProperties)) { 4512 if (DBG) { 4513 log("Link configuration changed for netId: " + mLastNetworkId 4514 + " old: " + mLinkProperties + " new: " + newLp); 4515 } 4516 // We own this instance of LinkProperties because IpManager passes us a copy. 4517 mLinkProperties = newLp; 4518 if (mNetworkAgent != null) { 4519 mNetworkAgent.sendLinkProperties(mLinkProperties); 4520 } 4521 4522 if (getNetworkDetailedState() == DetailedState.CONNECTED) { 4523 // If anything has changed and we're already connected, send out a notification. 4524 // TODO: Update all callers to use NetworkCallbacks and delete this. 4525 sendLinkConfigurationChangedBroadcast(); 4526 } 4527 } 4528 4529 if (DBG) { 4530 StringBuilder sb = new StringBuilder(); 4531 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4532 sb.append(" state: " + getNetworkDetailedState()); 4533 4534 if (mLinkProperties != null) { 4535 sb.append(" "); 4536 sb.append(getLinkPropertiesSummary(mLinkProperties)); 4537 } 4538 logd(sb.toString()); 4539 } 4540 } 4541 4542 /** 4543 * Clears all our link properties. 4544 */ 4545 private void clearLinkProperties() { 4546 // Clear the link properties obtained from DHCP. The only caller of this 4547 // function has already called IpManager#stop(), which clears its state. 4548 synchronized (mDhcpResultsLock) { 4549 if (mDhcpResults != null) { 4550 mDhcpResults.clear(); 4551 } 4552 } 4553 4554 // Now clear the merged link properties. 4555 mLinkProperties.clear(); 4556 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4557 } 4558 4559 /** 4560 * try to update default route MAC address. 4561 */ 4562 private String updateDefaultRouteMacAddress(int timeout) { 4563 String address = null; 4564 for (RouteInfo route : mLinkProperties.getRoutes()) { 4565 if (route.isDefaultRoute() && route.hasGateway()) { 4566 InetAddress gateway = route.getGateway(); 4567 if (gateway instanceof Inet4Address) { 4568 if (PDBG) { 4569 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4570 + gateway.getHostAddress()); 4571 } 4572 address = macAddressFromRoute(gateway.getHostAddress()); 4573 /* The gateway's MAC address is known */ 4574 if ((address == null) && (timeout > 0)) { 4575 boolean reachable = false; 4576 try { 4577 reachable = gateway.isReachable(timeout); 4578 } catch (Exception e) { 4579 loge("updateDefaultRouteMacAddress exception reaching :" 4580 + gateway.getHostAddress()); 4581 4582 } finally { 4583 if (reachable == true) { 4584 4585 address = macAddressFromRoute(gateway.getHostAddress()); 4586 if (PDBG) { 4587 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4588 + gateway.getHostAddress() + " found " + address); 4589 } 4590 } 4591 } 4592 } 4593 if (address != null) { 4594 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4595 } 4596 } 4597 } 4598 } 4599 return address; 4600 } 4601 4602 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4603 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4604 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4605 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4606 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4607 } 4608 4609 private void sendRssiChangeBroadcast(final int newRssi) { 4610 try { 4611 mBatteryStats.noteWifiRssiChanged(newRssi); 4612 } catch (RemoteException e) { 4613 // Won't happen. 4614 } 4615 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4616 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4617 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4618 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4619 } 4620 4621 private void sendNetworkStateChangeBroadcast(String bssid) { 4622 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4623 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4624 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4625 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4626 if (bssid != null) 4627 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4628 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4629 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4630 // We no longer report MAC address to third-parties and our code does 4631 // not rely on this broadcast, so just send the default MAC address. 4632 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4633 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4634 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4635 } 4636 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4637 } 4638 4639 private WifiInfo getWiFiInfoForUid(int uid) { 4640 if (Binder.getCallingUid() == Process.myUid()) { 4641 return mWifiInfo; 4642 } 4643 4644 WifiInfo result = new WifiInfo(mWifiInfo); 4645 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4646 4647 IBinder binder = mFacade.getService("package"); 4648 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4649 4650 try { 4651 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4652 uid) == PackageManager.PERMISSION_GRANTED) { 4653 result.setMacAddress(mWifiInfo.getMacAddress()); 4654 } 4655 } catch (RemoteException e) { 4656 Log.e(TAG, "Error checking receiver permission", e); 4657 } 4658 4659 return result; 4660 } 4661 4662 private void sendLinkConfigurationChangedBroadcast() { 4663 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4664 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4665 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4666 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4667 } 4668 4669 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4670 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4671 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4672 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4673 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4674 } 4675 4676 /** 4677 * Record the detailed state of a network. 4678 * 4679 * @param state the new {@code DetailedState} 4680 */ 4681 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4682 boolean hidden = false; 4683 4684 if (linkDebouncing || isRoaming()) { 4685 // There is generally a confusion in the system about colluding 4686 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4687 // which leads to multiple confusion. 4688 // 4689 // If link is de-bouncing or roaming, we already have an IP address 4690 // as well we were connected and are doing L2 cycles of 4691 // reconnecting or renewing IP address to check that we still have it 4692 // This L2 link flapping should ne be reflected into the Network state 4693 // which is the state of the WiFi Network visible to Layer 3 and applications 4694 // Note that once debouncing and roaming are completed, we will 4695 // set the Network state to where it should be, or leave it as unchanged 4696 // 4697 hidden = true; 4698 } 4699 if (DBG) { 4700 log("setDetailed state, old =" 4701 + mNetworkInfo.getDetailedState() + " and new state=" + state 4702 + " hidden=" + hidden); 4703 } 4704 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null 4705 && !mWifiInfo.getSSID().equals(WifiSsid.NONE)) { 4706 // Always indicate that SSID has changed 4707 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4708 if (DBG) { 4709 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4710 } 4711 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4712 sendNetworkStateChangeBroadcast(null); 4713 } 4714 } 4715 if (hidden == true) { 4716 return false; 4717 } 4718 4719 if (state != mNetworkInfo.getDetailedState()) { 4720 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4721 if (mNetworkAgent != null) { 4722 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4723 } 4724 sendNetworkStateChangeBroadcast(null); 4725 return true; 4726 } 4727 return false; 4728 } 4729 4730 private DetailedState getNetworkDetailedState() { 4731 return mNetworkInfo.getDetailedState(); 4732 } 4733 4734 private SupplicantState handleSupplicantStateChange(Message message) { 4735 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4736 SupplicantState state = stateChangeResult.state; 4737 // Supplicant state change 4738 // [31-13] Reserved for future use 4739 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4740 // 50023 supplicant_state_changed (custom|1|5) 4741 mWifiInfo.setSupplicantState(state); 4742 // Network id is only valid when we start connecting 4743 if (SupplicantState.isConnecting(state)) { 4744 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4745 } else { 4746 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4747 } 4748 4749 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4750 4751 if (mWhiteListedSsids != null 4752 && mWhiteListedSsids.length > 0 4753 && stateChangeResult.wifiSsid != null) { 4754 String SSID = stateChangeResult.wifiSsid.toString(); 4755 String currentSSID = mWifiInfo.getSSID(); 4756 if (SSID != null && currentSSID != null && !SSID.equals(WifiSsid.NONE)) { 4757 // Remove quote before comparing 4758 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4759 && SSID.charAt(SSID.length() - 1) == '"') { 4760 SSID = SSID.substring(1, SSID.length() - 1); 4761 } 4762 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4763 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4764 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4765 } 4766 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4767 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4768 //Create new connection event for connection attempt. 4769 mWifiMetrics.startConnectionEvent(mWifiInfo, 4770 WifiMetricsProto.ConnectionEvent.ROAM_ENTERPRISE); 4771 targetWificonfiguration = 4772 mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4773 transitionTo(mRoamingState); 4774 } 4775 } 4776 } 4777 4778 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4779 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4780 4781 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4782 4783 return state; 4784 } 4785 4786 /** 4787 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4788 * using the interface, stopping DHCP & disabling interface 4789 */ 4790 private void handleNetworkDisconnect() { 4791 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4792 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4793 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4794 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4795 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4796 4797 stopRssiMonitoringOffload(); 4798 4799 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4800 4801 stopIpManager(); 4802 4803 /* Reset data structures */ 4804 mBadLinkspeedcount = 0; 4805 mWifiInfo.reset(); 4806 linkDebouncing = false; 4807 /* Reset roaming parameters */ 4808 mAutoRoaming = false; 4809 4810 /** 4811 * fullBandConnectedTimeIntervalMilli: 4812 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4813 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4814 * Initialize to sane value = 20 seconds 4815 */ 4816 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4817 4818 setNetworkDetailedState(DetailedState.DISCONNECTED); 4819 if (mNetworkAgent != null) { 4820 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4821 mNetworkAgent = null; 4822 } 4823 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4824 4825 /* Clear network properties */ 4826 clearLinkProperties(); 4827 4828 /* Cend event to CM & network change broadcast */ 4829 sendNetworkStateChangeBroadcast(mLastBssid); 4830 4831 /* Cancel auto roam requests */ 4832 autoRoamSetBSSID(mLastNetworkId, "any"); 4833 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4834 mLastBssid = null; 4835 registerDisconnected(); 4836 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4837 } 4838 4839 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4840 /* Socket connection can be lost when we do a graceful shutdown 4841 * or when the driver is hung. Ensure supplicant is stopped here. 4842 */ 4843 if (killSupplicant) { 4844 mWifiMonitor.killSupplicant(mP2pSupported); 4845 } 4846 mWifiNative.closeSupplicantConnection(); 4847 sendSupplicantConnectionChangedBroadcast(false); 4848 setWifiState(WIFI_STATE_DISABLED); 4849 } 4850 4851 void handlePreDhcpSetup() { 4852 if (!mBluetoothConnectionActive) { 4853 /* 4854 * There are problems setting the Wi-Fi driver's power 4855 * mode to active when bluetooth coexistence mode is 4856 * enabled or sense. 4857 * <p> 4858 * We set Wi-Fi to active mode when 4859 * obtaining an IP address because we've found 4860 * compatibility issues with some routers with low power 4861 * mode. 4862 * <p> 4863 * In order for this active power mode to properly be set, 4864 * we disable coexistence mode until we're done with 4865 * obtaining an IP address. One exception is if we 4866 * are currently connected to a headset, since disabling 4867 * coexistence would interrupt that connection. 4868 */ 4869 // Disable the coexistence mode 4870 mWifiNative.setBluetoothCoexistenceMode( 4871 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4872 } 4873 4874 // Disable power save and suspend optimizations during DHCP 4875 // Note: The order here is important for now. Brcm driver changes 4876 // power settings when we control suspend mode optimizations. 4877 // TODO: Remove this comment when the driver is fixed. 4878 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4879 mWifiNative.setPowerSave(false); 4880 4881 // Update link layer stats 4882 getWifiLinkLayerStats(false); 4883 4884 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4885 Message msg = new Message(); 4886 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4887 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4888 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4889 msg.obj = WifiStateMachine.this; 4890 mWifiP2pChannel.sendMessage(msg); 4891 } 4892 4893 void handlePostDhcpSetup() { 4894 /* Restore power save and suspend optimizations */ 4895 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4896 mWifiNative.setPowerSave(true); 4897 4898 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, 4899 WifiP2pServiceImpl.DISABLED); 4900 4901 // Set the coexistence mode back to its default value 4902 mWifiNative.setBluetoothCoexistenceMode( 4903 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4904 } 4905 4906 void connectScanningService() { 4907 if (mWifiScanner == null) { 4908 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4909 } 4910 } 4911 4912 private void handleIPv4Success(DhcpResults dhcpResults) { 4913 if (PDBG) { 4914 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 4915 logd("link address " + dhcpResults.ipAddress); 4916 } 4917 4918 Inet4Address addr; 4919 synchronized (mDhcpResultsLock) { 4920 mDhcpResults = dhcpResults; 4921 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4922 } 4923 4924 if (isRoaming()) { 4925 int previousAddress = mWifiInfo.getIpAddress(); 4926 int newAddress = NetworkUtils.inetAddressToInt(addr); 4927 if (previousAddress != newAddress) { 4928 logd("handleIPv4Success, roaming and address changed" + 4929 mWifiInfo + " got: " + addr); 4930 } 4931 } 4932 mWifiInfo.setInetAddress(addr); 4933 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4934 } 4935 4936 private void handleSuccessfulIpConfiguration() { 4937 mLastSignalLevel = -1; // Force update of signal strength 4938 WifiConfiguration c = getCurrentWifiConfiguration(); 4939 if (c != null) { 4940 // Reset IP failure tracking 4941 c.getNetworkSelectionStatus().clearDisableReasonCounter( 4942 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4943 4944 // Tell the framework whether the newly connected network is trusted or untrusted. 4945 updateCapabilities(c); 4946 } 4947 if (c != null) { 4948 ScanResult result = getCurrentScanResult(); 4949 if (result == null) { 4950 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4951 c.configKey()); 4952 } else { 4953 // Clear the per BSSID failure count 4954 result.numIpConfigFailures = 0; 4955 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4956 // any BSSID, even though it may already have a non zero ip failure count, 4957 // this will typically happen if the user walks away and come back to his arrea 4958 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4959 // in supplicant for a couple of hours or a day 4960 mWifiConfigStore.clearBssidBlacklist(); 4961 } 4962 } 4963 } 4964 4965 private void handleIPv4Failure() { 4966 // TODO: Move this to provisioning failure, not DHCP failure. 4967 // DHCPv4 failure is expected on an IPv6-only network. 4968 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 4969 if (DBG) { 4970 int count = -1; 4971 WifiConfiguration config = getCurrentWifiConfiguration(); 4972 if (config != null) { 4973 count = config.getNetworkSelectionStatus().getDisableReasonCounter( 4974 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4975 } 4976 log("DHCP failure count=" + count); 4977 } 4978 mWifiMetrics.endConnectionEvent(0, WifiMetricsProto.ConnectionEvent.HLF_DHCP); 4979 4980 synchronized(mDhcpResultsLock) { 4981 if (mDhcpResults != null) { 4982 mDhcpResults.clear(); 4983 } 4984 } 4985 if (PDBG) { 4986 logd("handleIPv4Failure"); 4987 } 4988 } 4989 4990 private void handleIpConfigurationLost() { 4991 mWifiInfo.setInetAddress(null); 4992 mWifiInfo.setMeteredHint(false); 4993 4994 mWifiConfigStore.updateNetworkSelectionStatus(mLastNetworkId, 4995 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4996 4997 /* DHCP times out after about 30 seconds, we do a 4998 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4999 */ 5000 mWifiNative.disconnect(); 5001 } 5002 5003 // TODO: De-duplicated this and handleIpConfigurationLost(). 5004 private void handleIpReachabilityLost() { 5005 mWifiInfo.setInetAddress(null); 5006 mWifiInfo.setMeteredHint(false); 5007 5008 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5009 5010 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5011 mWifiNative.disconnect(); 5012 } 5013 5014 private int convertFrequencyToChannelNumber(int frequency) { 5015 if (frequency >= 2412 && frequency <= 2484) { 5016 return (frequency -2412) / 5 + 1; 5017 } else if (frequency >= 5170 && frequency <=5825) { 5018 //DFS is included 5019 return (frequency -5170) / 5 + 34; 5020 } else { 5021 return 0; 5022 } 5023 } 5024 5025 private int chooseApChannel(int apBand) { 5026 int apChannel; 5027 int[] channel; 5028 5029 if (apBand == 0) { 5030 ArrayList<Integer> allowed2GChannel = 5031 mWifiApConfigStore.getAllowed2GChannel(); 5032 if (allowed2GChannel == null || allowed2GChannel.size() == 0) { 5033 //most safe channel to use 5034 if(DBG) { 5035 Log.d(TAG, "No specified 2G allowed channel list"); 5036 } 5037 apChannel = 6; 5038 } else { 5039 int index = mRandom.nextInt(allowed2GChannel.size()); 5040 apChannel = allowed2GChannel.get(index).intValue(); 5041 } 5042 } else { 5043 //5G without DFS 5044 channel = mWifiNative.getChannelsForBand(2); 5045 if (channel != null && channel.length > 0) { 5046 apChannel = channel[mRandom.nextInt(channel.length)]; 5047 apChannel = convertFrequencyToChannelNumber(apChannel); 5048 } else { 5049 Log.e(TAG, "SoftAp do not get available channel list"); 5050 apChannel = 0; 5051 } 5052 } 5053 5054 if(DBG) { 5055 Log.d(TAG, "SoftAp set on channel " + apChannel); 5056 } 5057 5058 return apChannel; 5059 } 5060 5061 /* SoftAP configuration */ 5062 private boolean enableSoftAp() { 5063 if (mWifiNative.getInterfaces() != 0) { 5064 if (!mWifiNative.toggleInterface(0)) { 5065 if (DBG) Log.e(TAG, "toggleInterface failed"); 5066 return false; 5067 } 5068 } else { 5069 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5070 } 5071 5072 try { 5073 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5074 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5075 } catch (Exception e) { 5076 Log.e(TAG, "Failed to reload AP firmware " + e); 5077 } 5078 5079 if (mWifiNative.startHal() == false) { 5080 /* starting HAL is optional */ 5081 Log.e(TAG, "Failed to start HAL"); 5082 } 5083 return true; 5084 } 5085 5086 /* Current design is to not set the config on a running hostapd but instead 5087 * stop and start tethering when user changes config on a running access point 5088 * 5089 * TODO: Add control channel setup through hostapd that allows changing config 5090 * on a running daemon 5091 */ 5092 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5093 // set channel 5094 final WifiConfiguration config = new WifiConfiguration(configuration); 5095 5096 if (DBG) { 5097 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5098 } 5099 5100 //We need HAL support to set country code and get available channel list, if HAL is 5101 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5102 if (mWifiNative.isHalStarted()) { 5103 //set country code through HAL Here 5104 String countryCode = getCurrentCountryCode(); 5105 5106 if (countryCode != null) { 5107 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5108 if (config.apBand != 0) { 5109 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5110 //countrycode is mandatory for 5GHz 5111 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5112 return; 5113 } 5114 } 5115 } else { 5116 if (config.apBand != 0) { 5117 //countrycode is mandatory for 5GHz 5118 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5119 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5120 return; 5121 } 5122 } 5123 5124 if (config.apChannel == 0) { 5125 config.apChannel = chooseApChannel(config.apBand); 5126 if (config.apChannel == 0) { 5127 if(mWifiNative.isGetChannelsForBandSupported()) { 5128 //fail to get available channel 5129 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5130 return; 5131 } else { 5132 //for some old device, wifiHal may not be supportedget valid channels are not 5133 //supported 5134 config.apBand = 0; 5135 config.apChannel = 6; 5136 } 5137 } 5138 } 5139 } else { 5140 //for some old device, wifiHal may not be supported 5141 config.apBand = 0; 5142 config.apChannel = 6; 5143 } 5144 // Start hostapd on a separate thread 5145 new Thread(new Runnable() { 5146 public void run() { 5147 try { 5148 mNwService.startAccessPoint(config, mInterfaceName); 5149 } catch (Exception e) { 5150 loge("Exception in softap start " + e); 5151 try { 5152 mNwService.stopAccessPoint(mInterfaceName); 5153 mNwService.startAccessPoint(config, mInterfaceName); 5154 } catch (Exception e1) { 5155 loge("Exception in softap re-start " + e1); 5156 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5157 return; 5158 } 5159 } 5160 if (DBG) log("Soft AP start successful"); 5161 sendMessage(CMD_START_AP_SUCCESS); 5162 } 5163 }).start(); 5164 } 5165 5166 private byte[] macAddressFromString(String macString) { 5167 String[] macBytes = macString.split(":"); 5168 if (macBytes.length != 6) { 5169 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5170 } 5171 byte[] mac = new byte[6]; 5172 for (int i = 0; i < macBytes.length; i++) { 5173 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5174 mac[i] = hexVal.byteValue(); 5175 } 5176 return mac; 5177 } 5178 5179 /* 5180 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5181 * so as to record MAC address of default gateway. 5182 **/ 5183 private String macAddressFromRoute(String ipAddress) { 5184 String macAddress = null; 5185 BufferedReader reader = null; 5186 try { 5187 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5188 5189 // Skip over the line bearing colum titles 5190 String line = reader.readLine(); 5191 5192 while ((line = reader.readLine()) != null) { 5193 String[] tokens = line.split("[ ]+"); 5194 if (tokens.length < 6) { 5195 continue; 5196 } 5197 5198 // ARP column format is 5199 // Address HWType HWAddress Flags Mask IFace 5200 String ip = tokens[0]; 5201 String mac = tokens[3]; 5202 5203 if (ipAddress.equals(ip)) { 5204 macAddress = mac; 5205 break; 5206 } 5207 } 5208 5209 if (macAddress == null) { 5210 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5211 "/proc/net/arp"); 5212 } 5213 5214 } catch (FileNotFoundException e) { 5215 loge("Could not open /proc/net/arp to lookup mac address"); 5216 } catch (IOException e) { 5217 loge("Could not read /proc/net/arp to lookup mac address"); 5218 } finally { 5219 try { 5220 if (reader != null) { 5221 reader.close(); 5222 } 5223 } catch (IOException e) { 5224 // Do nothing 5225 } 5226 } 5227 return macAddress; 5228 5229 } 5230 5231 private class WifiNetworkFactory extends NetworkFactory { 5232 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5233 super(l, c, TAG, f); 5234 } 5235 5236 @Override 5237 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5238 ++mConnectionRequests; 5239 } 5240 5241 @Override 5242 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5243 --mConnectionRequests; 5244 } 5245 5246 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5247 pw.println("mConnectionRequests " + mConnectionRequests); 5248 } 5249 5250 } 5251 5252 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5253 private int mUntrustedReqCount; 5254 5255 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5256 super(l, c, tag, f); 5257 } 5258 5259 @Override 5260 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5261 if (!networkRequest.networkCapabilities.hasCapability( 5262 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5263 if (++mUntrustedReqCount == 1) { 5264 setAllowUntrustedConnections(true); 5265 } 5266 } 5267 } 5268 5269 @Override 5270 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5271 if (!networkRequest.networkCapabilities.hasCapability( 5272 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5273 if (--mUntrustedReqCount == 0) { 5274 setAllowUntrustedConnections(false); 5275 } 5276 } 5277 } 5278 5279 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5280 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5281 } 5282 } 5283 5284 void maybeRegisterNetworkFactory() { 5285 if (mNetworkFactory == null) { 5286 checkAndSetConnectivityInstance(); 5287 if (mCm != null) { 5288 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5289 NETWORKTYPE, mNetworkCapabilitiesFilter); 5290 mNetworkFactory.setScoreFilter(60); 5291 mNetworkFactory.register(); 5292 5293 // We can't filter untrusted network in the capabilities filter because a trusted 5294 // network would still satisfy a request that accepts untrusted ones. 5295 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5296 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5297 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5298 mUntrustedNetworkFactory.register(); 5299 } 5300 } 5301 } 5302 5303 /******************************************************** 5304 * HSM states 5305 *******************************************************/ 5306 5307 class DefaultState extends State { 5308 @Override 5309 public boolean processMessage(Message message) { 5310 logStateAndMessage(message, this); 5311 5312 switch (message.what) { 5313 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5314 AsyncChannel ac = (AsyncChannel) message.obj; 5315 if (ac == mWifiP2pChannel) { 5316 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5317 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5318 } else { 5319 loge("WifiP2pService connection failure, error=" + message.arg1); 5320 } 5321 } else { 5322 loge("got HALF_CONNECTED for unknown channel"); 5323 } 5324 break; 5325 } 5326 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5327 AsyncChannel ac = (AsyncChannel) message.obj; 5328 if (ac == mWifiP2pChannel) { 5329 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5330 //TODO: Re-establish connection to state machine after a delay 5331 // mWifiP2pChannel.connect(mContext, getHandler(), 5332 // mWifiP2pManager.getMessenger()); 5333 } 5334 break; 5335 } 5336 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5337 mBluetoothConnectionActive = (message.arg1 != 5338 BluetoothAdapter.STATE_DISCONNECTED); 5339 break; 5340 /* Synchronous call returns */ 5341 case CMD_PING_SUPPLICANT: 5342 case CMD_ENABLE_NETWORK: 5343 case CMD_ADD_OR_UPDATE_NETWORK: 5344 case CMD_REMOVE_NETWORK: 5345 case CMD_SAVE_CONFIG: 5346 replyToMessage(message, message.what, FAILURE); 5347 break; 5348 case CMD_GET_CAPABILITY_FREQ: 5349 replyToMessage(message, message.what, null); 5350 break; 5351 case CMD_GET_CONFIGURED_NETWORKS: 5352 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5353 break; 5354 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5355 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5356 break; 5357 case CMD_ENABLE_RSSI_POLL: 5358 mEnableRssiPolling = (message.arg1 == 1); 5359 break; 5360 case CMD_SET_HIGH_PERF_MODE: 5361 if (message.arg1 == 1) { 5362 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5363 } else { 5364 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5365 } 5366 break; 5367 case CMD_BOOT_COMPLETED: 5368 maybeRegisterNetworkFactory(); 5369 break; 5370 case CMD_SCREEN_STATE_CHANGED: 5371 handleScreenStateChanged(message.arg1 != 0); 5372 break; 5373 /* Discard */ 5374 case CMD_START_SCAN: 5375 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5376 break; 5377 case CMD_START_SUPPLICANT: 5378 case CMD_STOP_SUPPLICANT: 5379 case CMD_STOP_SUPPLICANT_FAILED: 5380 case CMD_START_DRIVER: 5381 case CMD_STOP_DRIVER: 5382 case CMD_DRIVER_START_TIMED_OUT: 5383 case CMD_START_AP: 5384 case CMD_START_AP_SUCCESS: 5385 case CMD_START_AP_FAILURE: 5386 case CMD_STOP_AP: 5387 case CMD_TETHER_STATE_CHANGE: 5388 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5389 case CMD_DISCONNECT: 5390 case CMD_RECONNECT: 5391 case CMD_REASSOCIATE: 5392 case CMD_RELOAD_TLS_AND_RECONNECT: 5393 case WifiMonitor.SUP_CONNECTION_EVENT: 5394 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5395 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5396 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5397 case WifiMonitor.SCAN_RESULTS_EVENT: 5398 case WifiMonitor.SCAN_FAILED_EVENT: 5399 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5400 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5401 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5402 case WifiMonitor.WPS_OVERLAP_EVENT: 5403 case CMD_BLACKLIST_NETWORK: 5404 case CMD_CLEAR_BLACKLIST: 5405 case CMD_SET_OPERATIONAL_MODE: 5406 case CMD_SET_FREQUENCY_BAND: 5407 case CMD_RSSI_POLL: 5408 case CMD_ENABLE_ALL_NETWORKS: 5409 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5410 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5411 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5412 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5413 case CMD_DISABLE_P2P_RSP: 5414 case WifiMonitor.SUP_REQUEST_IDENTITY: 5415 case CMD_TEST_NETWORK_DISCONNECT: 5416 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5417 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5418 case CMD_TARGET_BSSID: 5419 case CMD_AUTO_CONNECT: 5420 case CMD_AUTO_ROAM: 5421 case CMD_AUTO_SAVE_NETWORK: 5422 case CMD_ASSOCIATED_BSSID: 5423 case CMD_UNWANTED_NETWORK: 5424 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5425 case CMD_ROAM_WATCHDOG_TIMER: 5426 case CMD_DISABLE_EPHEMERAL_NETWORK: 5427 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5428 case CMD_STARTED_PNO_DBG: 5429 case CMD_STARTED_GSCAN_DBG: 5430 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5431 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5432 break; 5433 case CMD_SET_COUNTRY_CODE: 5434 String country = (String) message.obj; 5435 final boolean persist = (message.arg2 == 1); 5436 final int sequence = message.arg1; 5437 if (sequence != mCountryCodeSequence.get()) { 5438 if (DBG) log("set country code ignored due to sequnce num"); 5439 break; 5440 } 5441 5442 if (persist) { 5443 country = country.toUpperCase(Locale.ROOT); 5444 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5445 Settings.Global.putString(mContext.getContentResolver(), 5446 Settings.Global.WIFI_COUNTRY_CODE, 5447 country == null ? "" : country); 5448 } 5449 5450 break; 5451 case CMD_SET_SUSPEND_OPT_ENABLED: 5452 if (message.arg1 == 1) { 5453 mSuspendWakeLock.release(); 5454 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5455 } else { 5456 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5457 } 5458 break; 5459 case WifiMonitor.DRIVER_HUNG_EVENT: 5460 setSupplicantRunning(false); 5461 setSupplicantRunning(true); 5462 break; 5463 case WifiManager.CONNECT_NETWORK: 5464 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5465 WifiManager.BUSY); 5466 break; 5467 case WifiManager.FORGET_NETWORK: 5468 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5469 WifiManager.BUSY); 5470 break; 5471 case WifiManager.SAVE_NETWORK: 5472 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5473 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5474 WifiManager.BUSY); 5475 break; 5476 case WifiManager.START_WPS: 5477 replyToMessage(message, WifiManager.WPS_FAILED, 5478 WifiManager.BUSY); 5479 break; 5480 case WifiManager.CANCEL_WPS: 5481 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5482 WifiManager.BUSY); 5483 break; 5484 case WifiManager.DISABLE_NETWORK: 5485 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5486 WifiManager.BUSY); 5487 break; 5488 case WifiManager.RSSI_PKTCNT_FETCH: 5489 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5490 WifiManager.BUSY); 5491 break; 5492 case CMD_GET_SUPPORTED_FEATURES: 5493 int featureSet = mWifiNative.getSupportedFeatureSet(); 5494 replyToMessage(message, message.what, featureSet); 5495 break; 5496 case CMD_FIRMWARE_ALERT: 5497 if (mWifiLogger != null) { 5498 byte[] buffer = (byte[])message.obj; 5499 mWifiLogger.captureAlertData(message.arg1, buffer); 5500 } 5501 break; 5502 case CMD_GET_LINK_LAYER_STATS: 5503 // Not supported hence reply with error message 5504 replyToMessage(message, message.what, null); 5505 break; 5506 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5507 NetworkInfo info = (NetworkInfo) message.obj; 5508 mP2pConnected.set(info.isConnected()); 5509 break; 5510 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5511 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5512 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5513 break; 5514 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5515 case CMD_UPDATE_LINKPROPERTIES: 5516 updateLinkProperties((LinkProperties) message.obj); 5517 break; 5518 case CMD_GET_MATCHING_CONFIG: 5519 replyToMessage(message, message.what); 5520 break; 5521 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5522 case CMD_IP_CONFIGURATION_LOST: 5523 case CMD_IP_REACHABILITY_LOST: 5524 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5525 break; 5526 case CMD_GET_CONNECTION_STATISTICS: 5527 replyToMessage(message, message.what, mWifiConnectionStatistics); 5528 break; 5529 case CMD_REMOVE_APP_CONFIGURATIONS: 5530 deferMessage(message); 5531 break; 5532 case CMD_REMOVE_USER_CONFIGURATIONS: 5533 deferMessage(message); 5534 break; 5535 case CMD_START_IP_PACKET_OFFLOAD: 5536 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5537 message.arg1, 5538 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5539 break; 5540 case CMD_STOP_IP_PACKET_OFFLOAD: 5541 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5542 message.arg1, 5543 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5544 break; 5545 case CMD_START_RSSI_MONITORING_OFFLOAD: 5546 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5547 break; 5548 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5549 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5550 break; 5551 case CMD_USER_SWITCH: 5552 mCurrentUserId = message.arg1; 5553 mWifiConfigStore.handleUserSwitch(); 5554 break; 5555 case CMD_ADD_PASSPOINT_MO: 5556 case CMD_MODIFY_PASSPOINT_MO: 5557 case CMD_QUERY_OSU_ICON: 5558 case CMD_MATCH_PROVIDER_NETWORK: 5559 /* reply with arg1 = 0 - it returns API failure to the calling app 5560 * (message.what is not looked at) 5561 */ 5562 replyToMessage(message, message.what); 5563 break; 5564 default: 5565 loge("Error! unhandled message" + message); 5566 break; 5567 } 5568 return HANDLED; 5569 } 5570 } 5571 5572 class InitialState extends State { 5573 @Override 5574 public void enter() { 5575 mWifiNative.stopHal(); 5576 mWifiNative.unloadDriver(); 5577 if (mWifiP2pChannel == null) { 5578 mWifiP2pChannel = new AsyncChannel(); 5579 mWifiP2pChannel.connect(mContext, getHandler(), 5580 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5581 } 5582 5583 if (mWifiApConfigStore == null) { 5584 mWifiApConfigStore = mFacade.makeApConfigStore(mContext); 5585 } 5586 5587 if (mWifiConfigStore.enableHalBasedPno.get()) { 5588 // make sure developer Settings are in sync with the config option 5589 mHalBasedPnoEnableInDevSettings = true; 5590 } 5591 } 5592 @Override 5593 public boolean processMessage(Message message) { 5594 logStateAndMessage(message, this); 5595 switch (message.what) { 5596 case CMD_START_SUPPLICANT: 5597 if (mWifiNative.loadDriver()) { 5598 try { 5599 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5600 } catch (Exception e) { 5601 loge("Failed to reload STA firmware " + e); 5602 // Continue 5603 } 5604 5605 try { 5606 // A runtime crash can leave the interface up and 5607 // IP addresses configured, and this affects 5608 // connectivity when supplicant starts up. 5609 // Ensure interface is down and we have no IP 5610 // addresses before a supplicant start. 5611 mNwService.setInterfaceDown(mInterfaceName); 5612 mNwService.clearInterfaceAddresses(mInterfaceName); 5613 5614 // Set privacy extensions 5615 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5616 5617 // IPv6 is enabled only as long as access point is connected since: 5618 // - IPv6 addresses and routes stick around after disconnection 5619 // - kernel is unaware when connected and fails to start IPv6 negotiation 5620 // - kernel can start autoconfiguration when 802.1x is not complete 5621 mNwService.disableIpv6(mInterfaceName); 5622 } catch (RemoteException re) { 5623 loge("Unable to change interface settings: " + re); 5624 } catch (IllegalStateException ie) { 5625 loge("Unable to change interface settings: " + ie); 5626 } 5627 5628 /* Stop a running supplicant after a runtime restart 5629 * Avoids issues with drivers that do not handle interface down 5630 * on a running supplicant properly. 5631 */ 5632 mWifiMonitor.killSupplicant(mP2pSupported); 5633 5634 if (mWifiNative.startHal() == false) { 5635 /* starting HAL is optional */ 5636 loge("Failed to start HAL"); 5637 } 5638 5639 if (mWifiNative.startSupplicant(mP2pSupported)) { 5640 setWifiState(WIFI_STATE_ENABLING); 5641 if (DBG) log("Supplicant start successful"); 5642 mWifiMonitor.startMonitoring(mInterfaceName); 5643 transitionTo(mSupplicantStartingState); 5644 } else { 5645 loge("Failed to start supplicant!"); 5646 } 5647 } else { 5648 loge("Failed to load driver"); 5649 } 5650 break; 5651 case CMD_START_AP: 5652 if (mWifiNative.loadDriver() == false) { 5653 loge("Failed to load driver for softap"); 5654 } else { 5655 if (enableSoftAp() == true) { 5656 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5657 transitionTo(mSoftApStartingState); 5658 } else { 5659 setWifiApState(WIFI_AP_STATE_FAILED, 5660 WifiManager.SAP_START_FAILURE_GENERAL); 5661 transitionTo(mInitialState); 5662 } 5663 } 5664 break; 5665 default: 5666 return NOT_HANDLED; 5667 } 5668 return HANDLED; 5669 } 5670 } 5671 5672 class SupplicantStartingState extends State { 5673 private void initializeWpsDetails() { 5674 String detail; 5675 detail = SystemProperties.get("ro.product.name", ""); 5676 if (!mWifiNative.setDeviceName(detail)) { 5677 loge("Failed to set device name " + detail); 5678 } 5679 detail = SystemProperties.get("ro.product.manufacturer", ""); 5680 if (!mWifiNative.setManufacturer(detail)) { 5681 loge("Failed to set manufacturer " + detail); 5682 } 5683 detail = SystemProperties.get("ro.product.model", ""); 5684 if (!mWifiNative.setModelName(detail)) { 5685 loge("Failed to set model name " + detail); 5686 } 5687 detail = SystemProperties.get("ro.product.model", ""); 5688 if (!mWifiNative.setModelNumber(detail)) { 5689 loge("Failed to set model number " + detail); 5690 } 5691 detail = SystemProperties.get("ro.serialno", ""); 5692 if (!mWifiNative.setSerialNumber(detail)) { 5693 loge("Failed to set serial number " + detail); 5694 } 5695 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5696 loge("Failed to set WPS config methods"); 5697 } 5698 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5699 loge("Failed to set primary device type " + mPrimaryDeviceType); 5700 } 5701 } 5702 5703 @Override 5704 public boolean processMessage(Message message) { 5705 logStateAndMessage(message, this); 5706 5707 switch(message.what) { 5708 case WifiMonitor.SUP_CONNECTION_EVENT: 5709 if (DBG) log("Supplicant connection established"); 5710 setWifiState(WIFI_STATE_ENABLED); 5711 mSupplicantRestartCount = 0; 5712 /* Reset the supplicant state to indicate the supplicant 5713 * state is not known at this time */ 5714 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5715 /* Initialize data structures */ 5716 mLastBssid = null; 5717 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5718 mLastSignalLevel = -1; 5719 5720 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5721 /* set frequency band of operation */ 5722 setFrequencyBand(); 5723 mWifiNative.enableSaveConfig(); 5724 mWifiConfigStore.loadAndEnableAllNetworks(); 5725 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5726 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5727 } 5728 initializeWpsDetails(); 5729 5730 sendSupplicantConnectionChangedBroadcast(true); 5731 transitionTo(mDriverStartedState); 5732 break; 5733 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5734 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5735 loge("Failed to setup control channel, restart supplicant"); 5736 mWifiMonitor.killSupplicant(mP2pSupported); 5737 transitionTo(mInitialState); 5738 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5739 } else { 5740 loge("Failed " + mSupplicantRestartCount + 5741 " times to start supplicant, unload driver"); 5742 mSupplicantRestartCount = 0; 5743 setWifiState(WIFI_STATE_UNKNOWN); 5744 transitionTo(mInitialState); 5745 } 5746 break; 5747 case CMD_START_SUPPLICANT: 5748 case CMD_STOP_SUPPLICANT: 5749 case CMD_START_AP: 5750 case CMD_STOP_AP: 5751 case CMD_START_DRIVER: 5752 case CMD_STOP_DRIVER: 5753 case CMD_SET_OPERATIONAL_MODE: 5754 case CMD_SET_COUNTRY_CODE: 5755 case CMD_SET_FREQUENCY_BAND: 5756 case CMD_START_PACKET_FILTERING: 5757 case CMD_STOP_PACKET_FILTERING: 5758 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5759 deferMessage(message); 5760 break; 5761 default: 5762 return NOT_HANDLED; 5763 } 5764 return HANDLED; 5765 } 5766 } 5767 5768 class SupplicantStartedState extends State { 5769 @Override 5770 public void enter() { 5771 /* Wifi is available as long as we have a connection to supplicant */ 5772 mNetworkInfo.setIsAvailable(true); 5773 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5774 5775 int defaultInterval = mContext.getResources().getInteger( 5776 R.integer.config_wifi_supplicant_scan_interval); 5777 5778 mSupplicantScanIntervalMs = mFacade.getLongSetting(mContext, 5779 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5780 defaultInterval); 5781 5782 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5783 mWifiNative.setExternalSim(true); 5784 5785 /* turn on use of DFS channels */ 5786 mWifiNative.setDfsFlag(true); 5787 5788 /* set country code */ 5789 initializeCountryCode(); 5790 5791 setRandomMacOui(); 5792 mWifiNative.enableAutoConnect(false); 5793 } 5794 5795 @Override 5796 public boolean processMessage(Message message) { 5797 logStateAndMessage(message, this); 5798 5799 switch(message.what) { 5800 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5801 if (mP2pSupported) { 5802 transitionTo(mWaitForP2pDisableState); 5803 } else { 5804 transitionTo(mSupplicantStoppingState); 5805 } 5806 break; 5807 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5808 loge("Connection lost, restart supplicant"); 5809 handleSupplicantConnectionLoss(true); 5810 handleNetworkDisconnect(); 5811 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5812 if (mP2pSupported) { 5813 transitionTo(mWaitForP2pDisableState); 5814 } else { 5815 transitionTo(mInitialState); 5816 } 5817 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5818 break; 5819 case WifiMonitor.SCAN_RESULTS_EVENT: 5820 case WifiMonitor.SCAN_FAILED_EVENT: 5821 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5822 noteScanEnd(); 5823 setScanResults(); 5824 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5825 /* Just updated results from full scan, let apps know about this */ 5826 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5827 sendScanResultsAvailableBroadcast(scanSucceeded); 5828 } 5829 mSendScanResultsBroadcast = false; 5830 mIsScanOngoing = false; 5831 mIsFullScanOngoing = false; 5832 if (mBufferedScanMsg.size() > 0) 5833 sendMessage(mBufferedScanMsg.remove()); 5834 break; 5835 case CMD_PING_SUPPLICANT: 5836 boolean ok = mWifiNative.ping(); 5837 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5838 break; 5839 case CMD_GET_CAPABILITY_FREQ: 5840 String freqs = mWifiNative.getFreqCapability(); 5841 replyToMessage(message, message.what, freqs); 5842 break; 5843 case CMD_START_AP: 5844 /* Cannot start soft AP while in client mode */ 5845 loge("Failed to start soft AP with a running supplicant"); 5846 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5847 break; 5848 case CMD_SET_OPERATIONAL_MODE: 5849 mOperationalMode = message.arg1; 5850 mWifiConfigStore. 5851 setAndEnableLastSelectedConfiguration( 5852 WifiConfiguration.INVALID_NETWORK_ID); 5853 break; 5854 case CMD_TARGET_BSSID: 5855 // Trying to associate to this BSSID 5856 if (message.obj != null) { 5857 mTargetRoamBSSID = (String) message.obj; 5858 } 5859 break; 5860 case CMD_GET_LINK_LAYER_STATS: 5861 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5862 if (stats == null) { 5863 // When firmware doesnt support link layer stats, return an empty object 5864 stats = new WifiLinkLayerStats(); 5865 } 5866 replyToMessage(message, message.what, stats); 5867 break; 5868 case CMD_SET_COUNTRY_CODE: 5869 String country = (String) message.obj; 5870 final boolean persist = (message.arg2 == 1); 5871 final int sequence = message.arg1; 5872 if (sequence != mCountryCodeSequence.get()) { 5873 if (DBG) log("set country code ignored due to sequnce num"); 5874 break; 5875 } 5876 5877 country = country.toUpperCase(Locale.ROOT); 5878 5879 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5880 5881 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 5882 if (mWifiNative.setCountryCode(country)) { 5883 mDriverSetCountryCode = country; 5884 } else { 5885 loge("Failed to set country code " + country); 5886 } 5887 } 5888 5889 if (persist) { 5890 Settings.Global.putString(mContext.getContentResolver(), 5891 Settings.Global.WIFI_COUNTRY_CODE, 5892 country == null ? "" : country); 5893 } 5894 5895 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5896 break; 5897 case CMD_RESET_SIM_NETWORKS: 5898 log("resetting EAP-SIM/AKA/AKA' networks since SIM was removed"); 5899 mWifiConfigStore.resetSimNetworks(); 5900 break; 5901 default: 5902 return NOT_HANDLED; 5903 } 5904 return HANDLED; 5905 } 5906 5907 @Override 5908 public void exit() { 5909 mNetworkInfo.setIsAvailable(false); 5910 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5911 } 5912 } 5913 5914 class SupplicantStoppingState extends State { 5915 @Override 5916 public void enter() { 5917 /* Send any reset commands to supplicant before shutting it down */ 5918 handleNetworkDisconnect(); 5919 5920 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5921 if (suppState == null) suppState = "unknown"; 5922 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5923 if (p2pSuppState == null) p2pSuppState = "unknown"; 5924 5925 logd("SupplicantStoppingState: stopSupplicant " 5926 + " init.svc.wpa_supplicant=" + suppState 5927 + " init.svc.p2p_supplicant=" + p2pSuppState); 5928 mWifiMonitor.stopSupplicant(); 5929 5930 /* Send ourselves a delayed message to indicate failure after a wait time */ 5931 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5932 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5933 setWifiState(WIFI_STATE_DISABLING); 5934 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5935 } 5936 @Override 5937 public boolean processMessage(Message message) { 5938 logStateAndMessage(message, this); 5939 5940 switch(message.what) { 5941 case WifiMonitor.SUP_CONNECTION_EVENT: 5942 loge("Supplicant connection received while stopping"); 5943 break; 5944 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5945 if (DBG) log("Supplicant connection lost"); 5946 handleSupplicantConnectionLoss(false); 5947 transitionTo(mInitialState); 5948 break; 5949 case CMD_STOP_SUPPLICANT_FAILED: 5950 if (message.arg1 == mSupplicantStopFailureToken) { 5951 loge("Timed out on a supplicant stop, kill and proceed"); 5952 handleSupplicantConnectionLoss(true); 5953 transitionTo(mInitialState); 5954 } 5955 break; 5956 case CMD_START_SUPPLICANT: 5957 case CMD_STOP_SUPPLICANT: 5958 case CMD_START_AP: 5959 case CMD_STOP_AP: 5960 case CMD_START_DRIVER: 5961 case CMD_STOP_DRIVER: 5962 case CMD_SET_OPERATIONAL_MODE: 5963 case CMD_SET_COUNTRY_CODE: 5964 case CMD_SET_FREQUENCY_BAND: 5965 case CMD_START_PACKET_FILTERING: 5966 case CMD_STOP_PACKET_FILTERING: 5967 deferMessage(message); 5968 break; 5969 default: 5970 return NOT_HANDLED; 5971 } 5972 return HANDLED; 5973 } 5974 } 5975 5976 class DriverStartingState extends State { 5977 private int mTries; 5978 @Override 5979 public void enter() { 5980 mTries = 1; 5981 /* Send ourselves a delayed message to start driver a second time */ 5982 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5983 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5984 } 5985 @Override 5986 public boolean processMessage(Message message) { 5987 logStateAndMessage(message, this); 5988 5989 switch(message.what) { 5990 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5991 SupplicantState state = handleSupplicantStateChange(message); 5992 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5993 * a state that indicates driver has started, it is ready to 5994 * receive driver commands 5995 */ 5996 if (SupplicantState.isDriverActive(state)) { 5997 transitionTo(mDriverStartedState); 5998 } 5999 break; 6000 case CMD_DRIVER_START_TIMED_OUT: 6001 if (message.arg1 == mDriverStartToken) { 6002 if (mTries >= 2) { 6003 loge("Failed to start driver after " + mTries); 6004 transitionTo(mDriverStoppedState); 6005 } else { 6006 loge("Driver start failed, retrying"); 6007 mWakeLock.acquire(); 6008 mWifiNative.startDriver(); 6009 mWakeLock.release(); 6010 6011 ++mTries; 6012 /* Send ourselves a delayed message to start driver again */ 6013 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6014 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6015 } 6016 } 6017 break; 6018 /* Queue driver commands & connection events */ 6019 case CMD_START_DRIVER: 6020 case CMD_STOP_DRIVER: 6021 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6022 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6023 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6024 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6025 case WifiMonitor.WPS_OVERLAP_EVENT: 6026 case CMD_SET_COUNTRY_CODE: 6027 case CMD_SET_FREQUENCY_BAND: 6028 case CMD_START_PACKET_FILTERING: 6029 case CMD_STOP_PACKET_FILTERING: 6030 case CMD_START_SCAN: 6031 case CMD_DISCONNECT: 6032 case CMD_REASSOCIATE: 6033 case CMD_RECONNECT: 6034 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6035 deferMessage(message); 6036 break; 6037 case WifiMonitor.SCAN_RESULTS_EVENT: 6038 case WifiMonitor.SCAN_FAILED_EVENT: 6039 // Loose scan results obtained in Driver Starting state, they can only confuse 6040 // the state machine 6041 break; 6042 default: 6043 return NOT_HANDLED; 6044 } 6045 return HANDLED; 6046 } 6047 } 6048 6049 class DriverStartedState extends State { 6050 @Override 6051 public void enter() { 6052 6053 if (PDBG) { 6054 logd("DriverStartedState enter"); 6055 } 6056 6057 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6058 mIsRunning = true; 6059 updateBatteryWorkSource(null); 6060 /** 6061 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6062 * When this mode is on, some of the low-level scan parameters used by the 6063 * driver are changed to reduce interference with bluetooth 6064 */ 6065 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6066 /* initialize network state */ 6067 setNetworkDetailedState(DetailedState.DISCONNECTED); 6068 6069 /* Remove any filtering on Multicast v6 at start */ 6070 mWifiNative.stopFilteringMulticastV6Packets(); 6071 6072 /* Reset Multicast v4 filtering state */ 6073 if (mFilteringMulticastV4Packets.get()) { 6074 mWifiNative.startFilteringMulticastV4Packets(); 6075 } else { 6076 mWifiNative.stopFilteringMulticastV4Packets(); 6077 } 6078 6079 if (mOperationalMode != CONNECT_MODE) { 6080 mWifiNative.disconnect(); 6081 mWifiConfigStore.disableAllNetworks(); 6082 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6083 setWifiState(WIFI_STATE_DISABLED); 6084 } 6085 transitionTo(mScanModeState); 6086 } else { 6087 6088 // Status pulls in the current supplicant state and network connection state 6089 // events over the monitor connection. This helps framework sync up with 6090 // current supplicant state 6091 // TODO: actually check th supplicant status string and make sure the supplicant 6092 // is in disconnecte4d state. 6093 mWifiNative.status(); 6094 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6095 transitionTo(mDisconnectedState); 6096 transitionTo(mDisconnectedState); 6097 } 6098 6099 // We may have missed screen update at boot 6100 if (mScreenBroadcastReceived.get() == false) { 6101 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6102 Context.POWER_SERVICE); 6103 handleScreenStateChanged(powerManager.isScreenOn()); 6104 } else { 6105 // Set the right suspend mode settings 6106 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6107 && mUserWantsSuspendOpt.get()); 6108 } 6109 mWifiNative.setPowerSave(true); 6110 6111 if (mP2pSupported) { 6112 if (mOperationalMode == CONNECT_MODE) { 6113 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6114 } else { 6115 // P2P statemachine starts in disabled state, and is not enabled until 6116 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6117 // keep it disabled. 6118 } 6119 } 6120 6121 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6122 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6123 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6124 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6125 6126 mHalFeatureSet = mWifiNative.getSupportedFeatureSet(); 6127 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6128 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6129 mHalBasedPnoDriverSupported = true; 6130 } 6131 6132 // Enable link layer stats gathering 6133 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6134 6135 if (PDBG) { 6136 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6137 + " feature=" + mHalFeatureSet); 6138 } 6139 } 6140 6141 @Override 6142 public boolean processMessage(Message message) { 6143 logStateAndMessage(message, this); 6144 6145 switch(message.what) { 6146 case CMD_START_SCAN: 6147 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6148 break; 6149 case CMD_SET_FREQUENCY_BAND: 6150 int band = message.arg1; 6151 if (DBG) log("set frequency band " + band); 6152 if (mWifiNative.setBand(band)) { 6153 6154 if (PDBG) logd("did set frequency band " + band); 6155 6156 mFrequencyBand.set(band); 6157 // Flush old data - like scan results 6158 mWifiNative.bssFlush(); 6159 // Fetch the latest scan results when frequency band is set 6160// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6161 6162 if (PDBG) logd("done set frequency band " + band); 6163 6164 } else { 6165 loge("Failed to set frequency band " + band); 6166 } 6167 break; 6168 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6169 mBluetoothConnectionActive = (message.arg1 != 6170 BluetoothAdapter.STATE_DISCONNECTED); 6171 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6172 break; 6173 case CMD_STOP_DRIVER: 6174 int mode = message.arg1; 6175 6176 log("stop driver"); 6177 mWifiConfigStore.disableAllNetworks(); 6178 6179 if (getCurrentState() != mDisconnectedState) { 6180 mWifiNative.disconnect(); 6181 handleNetworkDisconnect(); 6182 } 6183 mWakeLock.acquire(); 6184 mWifiNative.stopDriver(); 6185 mWakeLock.release(); 6186 if (mP2pSupported) { 6187 transitionTo(mWaitForP2pDisableState); 6188 } else { 6189 transitionTo(mDriverStoppingState); 6190 } 6191 break; 6192 case CMD_START_DRIVER: 6193 if (mOperationalMode == CONNECT_MODE) { 6194 mWifiConfigStore.enableAllNetworks(); 6195 } 6196 break; 6197 case CMD_START_PACKET_FILTERING: 6198 if (message.arg1 == MULTICAST_V6) { 6199 mWifiNative.startFilteringMulticastV6Packets(); 6200 } else if (message.arg1 == MULTICAST_V4) { 6201 mWifiNative.startFilteringMulticastV4Packets(); 6202 } else { 6203 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6204 } 6205 break; 6206 case CMD_STOP_PACKET_FILTERING: 6207 if (message.arg1 == MULTICAST_V6) { 6208 mWifiNative.stopFilteringMulticastV6Packets(); 6209 } else if (message.arg1 == MULTICAST_V4) { 6210 mWifiNative.stopFilteringMulticastV4Packets(); 6211 } else { 6212 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6213 } 6214 break; 6215 case CMD_SET_SUSPEND_OPT_ENABLED: 6216 if (message.arg1 == 1) { 6217 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6218 mSuspendWakeLock.release(); 6219 } else { 6220 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6221 } 6222 break; 6223 case CMD_SET_HIGH_PERF_MODE: 6224 if (message.arg1 == 1) { 6225 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6226 } else { 6227 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6228 } 6229 break; 6230 case CMD_ENABLE_TDLS: 6231 if (message.obj != null) { 6232 String remoteAddress = (String) message.obj; 6233 boolean enable = (message.arg1 == 1); 6234 mWifiNative.startTdls(remoteAddress, enable); 6235 } 6236 break; 6237 case WifiMonitor.ANQP_DONE_EVENT: 6238 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6239 break; 6240 case CMD_STOP_IP_PACKET_OFFLOAD: { 6241 int slot = message.arg1; 6242 int ret = stopWifiIPPacketOffload(slot); 6243 if (mNetworkAgent != null) { 6244 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6245 } 6246 break; 6247 } 6248 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6249 mWifiConfigStore.notifyIconReceived((IconEvent) message.obj); 6250 break; 6251 case WifiMonitor.HS20_REMEDIATION_EVENT: 6252 mWifiConfigStore.wnmFrameReceived((WnmData) message.obj); 6253 break; 6254 default: 6255 return NOT_HANDLED; 6256 } 6257 return HANDLED; 6258 } 6259 @Override 6260 public void exit() { 6261 6262 mWifiLogger.stopLogging(); 6263 6264 mIsRunning = false; 6265 updateBatteryWorkSource(null); 6266 mScanResults = new ArrayList<>(); 6267 6268 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6269 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6270 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6271 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6272 noteScanEnd(); // wrap up any pending request. 6273 mBufferedScanMsg.clear(); 6274 } 6275 } 6276 6277 class WaitForP2pDisableState extends State { 6278 private State mTransitionToState; 6279 @Override 6280 public void enter() { 6281 switch (getCurrentMessage().what) { 6282 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6283 mTransitionToState = mInitialState; 6284 break; 6285 case CMD_STOP_DRIVER: 6286 mTransitionToState = mDriverStoppingState; 6287 break; 6288 case CMD_STOP_SUPPLICANT: 6289 mTransitionToState = mSupplicantStoppingState; 6290 break; 6291 default: 6292 mTransitionToState = mDriverStoppingState; 6293 break; 6294 } 6295 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6296 } 6297 @Override 6298 public boolean processMessage(Message message) { 6299 logStateAndMessage(message, this); 6300 6301 switch(message.what) { 6302 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6303 transitionTo(mTransitionToState); 6304 break; 6305 /* Defer wifi start/shut and driver commands */ 6306 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6307 case CMD_START_SUPPLICANT: 6308 case CMD_STOP_SUPPLICANT: 6309 case CMD_START_AP: 6310 case CMD_STOP_AP: 6311 case CMD_START_DRIVER: 6312 case CMD_STOP_DRIVER: 6313 case CMD_SET_OPERATIONAL_MODE: 6314 case CMD_SET_COUNTRY_CODE: 6315 case CMD_SET_FREQUENCY_BAND: 6316 case CMD_START_PACKET_FILTERING: 6317 case CMD_STOP_PACKET_FILTERING: 6318 case CMD_START_SCAN: 6319 case CMD_DISCONNECT: 6320 case CMD_REASSOCIATE: 6321 case CMD_RECONNECT: 6322 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6323 deferMessage(message); 6324 break; 6325 default: 6326 return NOT_HANDLED; 6327 } 6328 return HANDLED; 6329 } 6330 } 6331 6332 class DriverStoppingState extends State { 6333 @Override 6334 public boolean processMessage(Message message) { 6335 logStateAndMessage(message, this); 6336 6337 switch(message.what) { 6338 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6339 SupplicantState state = handleSupplicantStateChange(message); 6340 if (state == SupplicantState.INTERFACE_DISABLED) { 6341 transitionTo(mDriverStoppedState); 6342 } 6343 break; 6344 /* Queue driver commands */ 6345 case CMD_START_DRIVER: 6346 case CMD_STOP_DRIVER: 6347 case CMD_SET_COUNTRY_CODE: 6348 case CMD_SET_FREQUENCY_BAND: 6349 case CMD_START_PACKET_FILTERING: 6350 case CMD_STOP_PACKET_FILTERING: 6351 case CMD_START_SCAN: 6352 case CMD_DISCONNECT: 6353 case CMD_REASSOCIATE: 6354 case CMD_RECONNECT: 6355 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6356 deferMessage(message); 6357 break; 6358 default: 6359 return NOT_HANDLED; 6360 } 6361 return HANDLED; 6362 } 6363 } 6364 6365 class DriverStoppedState extends State { 6366 @Override 6367 public boolean processMessage(Message message) { 6368 logStateAndMessage(message, this); 6369 switch (message.what) { 6370 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6371 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6372 SupplicantState state = stateChangeResult.state; 6373 // A WEXT bug means that we can be back to driver started state 6374 // unexpectedly 6375 if (SupplicantState.isDriverActive(state)) { 6376 transitionTo(mDriverStartedState); 6377 } 6378 break; 6379 case CMD_START_DRIVER: 6380 mWakeLock.acquire(); 6381 mWifiNative.startDriver(); 6382 mWakeLock.release(); 6383 transitionTo(mDriverStartingState); 6384 break; 6385 default: 6386 return NOT_HANDLED; 6387 } 6388 return HANDLED; 6389 } 6390 } 6391 6392 class ScanModeState extends State { 6393 private int mLastOperationMode; 6394 @Override 6395 public void enter() { 6396 mLastOperationMode = mOperationalMode; 6397 } 6398 @Override 6399 public boolean processMessage(Message message) { 6400 logStateAndMessage(message, this); 6401 6402 switch(message.what) { 6403 case CMD_SET_OPERATIONAL_MODE: 6404 if (message.arg1 == CONNECT_MODE) { 6405 6406 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6407 setWifiState(WIFI_STATE_ENABLED); 6408 // Load and re-enable networks when going back to enabled state 6409 // This is essential for networks to show up after restore 6410 mWifiConfigStore.loadAndEnableAllNetworks(); 6411 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6412 } else { 6413 mWifiConfigStore.enableAllNetworks(); 6414 } 6415 // start a scan to trigger Quality network selection 6416 startScan(ENABLE_WIFI, 0, null, null); 6417 6418 // Loose last selection choice since user toggled WiFi 6419 mWifiConfigStore. 6420 setAndEnableLastSelectedConfiguration( 6421 WifiConfiguration.INVALID_NETWORK_ID); 6422 6423 mOperationalMode = CONNECT_MODE; 6424 transitionTo(mDisconnectedState); 6425 } else { 6426 // Nothing to do 6427 return HANDLED; 6428 } 6429 break; 6430 // Handle scan. All the connection related commands are 6431 // handled only in ConnectModeState 6432 case CMD_START_SCAN: 6433 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6434 break; 6435 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6436 SupplicantState state = handleSupplicantStateChange(message); 6437 if(DBG) log("SupplicantState= " + state); 6438 break; 6439 default: 6440 return NOT_HANDLED; 6441 } 6442 return HANDLED; 6443 } 6444 } 6445 6446 6447 String smToString(Message message) { 6448 return smToString(message.what); 6449 } 6450 6451 String smToString(int what) { 6452 String s = "unknown"; 6453 switch (what) { 6454 case WifiMonitor.DRIVER_HUNG_EVENT: 6455 s = "DRIVER_HUNG_EVENT"; 6456 break; 6457 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6458 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6459 break; 6460 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6461 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6462 break; 6463 case CMD_SET_FREQUENCY_BAND: 6464 s = "CMD_SET_FREQUENCY_BAND"; 6465 break; 6466 case CMD_DELAYED_NETWORK_DISCONNECT: 6467 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6468 break; 6469 case CMD_TEST_NETWORK_DISCONNECT: 6470 s = "CMD_TEST_NETWORK_DISCONNECT"; 6471 break; 6472 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6473 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6474 break; 6475 case CMD_DISABLE_EPHEMERAL_NETWORK: 6476 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6477 break; 6478 case CMD_START_DRIVER: 6479 s = "CMD_START_DRIVER"; 6480 break; 6481 case CMD_STOP_DRIVER: 6482 s = "CMD_STOP_DRIVER"; 6483 break; 6484 case CMD_STOP_SUPPLICANT: 6485 s = "CMD_STOP_SUPPLICANT"; 6486 break; 6487 case CMD_STOP_SUPPLICANT_FAILED: 6488 s = "CMD_STOP_SUPPLICANT_FAILED"; 6489 break; 6490 case CMD_START_SUPPLICANT: 6491 s = "CMD_START_SUPPLICANT"; 6492 break; 6493 case CMD_TETHER_STATE_CHANGE: 6494 s = "CMD_TETHER_STATE_CHANGE"; 6495 break; 6496 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6497 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6498 break; 6499 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6500 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6501 break; 6502 case CMD_ADD_OR_UPDATE_NETWORK: 6503 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6504 break; 6505 case CMD_REMOVE_NETWORK: 6506 s = "CMD_REMOVE_NETWORK"; 6507 break; 6508 case CMD_ENABLE_NETWORK: 6509 s = "CMD_ENABLE_NETWORK"; 6510 break; 6511 case CMD_ENABLE_ALL_NETWORKS: 6512 s = "CMD_ENABLE_ALL_NETWORKS"; 6513 break; 6514 case CMD_AUTO_CONNECT: 6515 s = "CMD_AUTO_CONNECT"; 6516 break; 6517 case CMD_AUTO_ROAM: 6518 s = "CMD_AUTO_ROAM"; 6519 break; 6520 case CMD_AUTO_SAVE_NETWORK: 6521 s = "CMD_AUTO_SAVE_NETWORK"; 6522 break; 6523 case CMD_BOOT_COMPLETED: 6524 s = "CMD_BOOT_COMPLETED"; 6525 break; 6526 case DhcpStateMachine.CMD_START_DHCP: 6527 s = "CMD_START_DHCP"; 6528 break; 6529 case DhcpStateMachine.CMD_STOP_DHCP: 6530 s = "CMD_STOP_DHCP"; 6531 break; 6532 case DhcpStateMachine.CMD_RENEW_DHCP: 6533 s = "CMD_RENEW_DHCP"; 6534 break; 6535 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6536 s = "CMD_PRE_DHCP_ACTION"; 6537 break; 6538 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6539 s = "CMD_POST_DHCP_ACTION"; 6540 break; 6541 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6542 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6543 break; 6544 case DhcpStateMachine.CMD_ON_QUIT: 6545 s = "CMD_ON_QUIT"; 6546 break; 6547 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6548 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6549 break; 6550 case WifiManager.DISABLE_NETWORK: 6551 s = "WifiManager.DISABLE_NETWORK"; 6552 break; 6553 case CMD_BLACKLIST_NETWORK: 6554 s = "CMD_BLACKLIST_NETWORK"; 6555 break; 6556 case CMD_CLEAR_BLACKLIST: 6557 s = "CMD_CLEAR_BLACKLIST"; 6558 break; 6559 case CMD_SAVE_CONFIG: 6560 s = "CMD_SAVE_CONFIG"; 6561 break; 6562 case CMD_GET_CONFIGURED_NETWORKS: 6563 s = "CMD_GET_CONFIGURED_NETWORKS"; 6564 break; 6565 case CMD_GET_SUPPORTED_FEATURES: 6566 s = "CMD_GET_SUPPORTED_FEATURES"; 6567 break; 6568 case CMD_UNWANTED_NETWORK: 6569 s = "CMD_UNWANTED_NETWORK"; 6570 break; 6571 case CMD_NETWORK_STATUS: 6572 s = "CMD_NETWORK_STATUS"; 6573 break; 6574 case CMD_GET_LINK_LAYER_STATS: 6575 s = "CMD_GET_LINK_LAYER_STATS"; 6576 break; 6577 case CMD_GET_MATCHING_CONFIG: 6578 s = "CMD_GET_MATCHING_CONFIG"; 6579 break; 6580 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6581 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6582 break; 6583 case CMD_DISCONNECT: 6584 s = "CMD_DISCONNECT"; 6585 break; 6586 case CMD_RECONNECT: 6587 s = "CMD_RECONNECT"; 6588 break; 6589 case CMD_REASSOCIATE: 6590 s = "CMD_REASSOCIATE"; 6591 break; 6592 case CMD_GET_CONNECTION_STATISTICS: 6593 s = "CMD_GET_CONNECTION_STATISTICS"; 6594 break; 6595 case CMD_SET_HIGH_PERF_MODE: 6596 s = "CMD_SET_HIGH_PERF_MODE"; 6597 break; 6598 case CMD_SET_COUNTRY_CODE: 6599 s = "CMD_SET_COUNTRY_CODE"; 6600 break; 6601 case CMD_ENABLE_RSSI_POLL: 6602 s = "CMD_ENABLE_RSSI_POLL"; 6603 break; 6604 case CMD_RSSI_POLL: 6605 s = "CMD_RSSI_POLL"; 6606 break; 6607 case CMD_START_PACKET_FILTERING: 6608 s = "CMD_START_PACKET_FILTERING"; 6609 break; 6610 case CMD_STOP_PACKET_FILTERING: 6611 s = "CMD_STOP_PACKET_FILTERING"; 6612 break; 6613 case CMD_SET_SUSPEND_OPT_ENABLED: 6614 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6615 break; 6616 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6617 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6618 break; 6619 case CMD_UPDATE_LINKPROPERTIES: 6620 s = "CMD_UPDATE_LINKPROPERTIES"; 6621 break; 6622 case CMD_RELOAD_TLS_AND_RECONNECT: 6623 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6624 break; 6625 case WifiManager.CONNECT_NETWORK: 6626 s = "CONNECT_NETWORK"; 6627 break; 6628 case WifiManager.SAVE_NETWORK: 6629 s = "SAVE_NETWORK"; 6630 break; 6631 case WifiManager.FORGET_NETWORK: 6632 s = "FORGET_NETWORK"; 6633 break; 6634 case WifiMonitor.SUP_CONNECTION_EVENT: 6635 s = "SUP_CONNECTION_EVENT"; 6636 break; 6637 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6638 s = "SUP_DISCONNECTION_EVENT"; 6639 break; 6640 case WifiMonitor.SCAN_RESULTS_EVENT: 6641 s = "SCAN_RESULTS_EVENT"; 6642 break; 6643 case WifiMonitor.SCAN_FAILED_EVENT: 6644 s = "SCAN_FAILED_EVENT"; 6645 break; 6646 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6647 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6648 break; 6649 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6650 s = "AUTHENTICATION_FAILURE_EVENT"; 6651 break; 6652 case WifiMonitor.SSID_TEMP_DISABLED: 6653 s = "SSID_TEMP_DISABLED"; 6654 break; 6655 case WifiMonitor.SSID_REENABLED: 6656 s = "SSID_REENABLED"; 6657 break; 6658 case WifiMonitor.WPS_SUCCESS_EVENT: 6659 s = "WPS_SUCCESS_EVENT"; 6660 break; 6661 case WifiMonitor.WPS_FAIL_EVENT: 6662 s = "WPS_FAIL_EVENT"; 6663 break; 6664 case WifiMonitor.SUP_REQUEST_IDENTITY: 6665 s = "SUP_REQUEST_IDENTITY"; 6666 break; 6667 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6668 s = "NETWORK_CONNECTION_EVENT"; 6669 break; 6670 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6671 s = "NETWORK_DISCONNECTION_EVENT"; 6672 break; 6673 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6674 s = "ASSOCIATION_REJECTION_EVENT"; 6675 break; 6676 case WifiMonitor.ANQP_DONE_EVENT: 6677 s = "WifiMonitor.ANQP_DONE_EVENT"; 6678 break; 6679 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6680 s = "WifiMonitor.RX_HS20_ANQP_ICON_EVENT"; 6681 break; 6682 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6683 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6684 break; 6685 case WifiMonitor.HS20_REMEDIATION_EVENT: 6686 s = "WifiMonitor.HS20_REMEDIATION_EVENT"; 6687 break; 6688 case WifiMonitor.GAS_QUERY_START_EVENT: 6689 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6690 break; 6691 case CMD_SET_OPERATIONAL_MODE: 6692 s = "CMD_SET_OPERATIONAL_MODE"; 6693 break; 6694 case CMD_START_SCAN: 6695 s = "CMD_START_SCAN"; 6696 break; 6697 case CMD_DISABLE_P2P_RSP: 6698 s = "CMD_DISABLE_P2P_RSP"; 6699 break; 6700 case CMD_DISABLE_P2P_REQ: 6701 s = "CMD_DISABLE_P2P_REQ"; 6702 break; 6703 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6704 s = "GROUP_CREATING_TIMED_OUT"; 6705 break; 6706 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6707 s = "P2P_CONNECTION_CHANGED"; 6708 break; 6709 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6710 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6711 break; 6712 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6713 s = "P2P.SET_MIRACAST_MODE"; 6714 break; 6715 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6716 s = "P2P.BLOCK_DISCOVERY"; 6717 break; 6718 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6719 s = "P2P.SET_COUNTRY_CODE"; 6720 break; 6721 case WifiManager.CANCEL_WPS: 6722 s = "CANCEL_WPS"; 6723 break; 6724 case WifiManager.CANCEL_WPS_FAILED: 6725 s = "CANCEL_WPS_FAILED"; 6726 break; 6727 case WifiManager.CANCEL_WPS_SUCCEDED: 6728 s = "CANCEL_WPS_SUCCEDED"; 6729 break; 6730 case WifiManager.START_WPS: 6731 s = "START_WPS"; 6732 break; 6733 case WifiManager.START_WPS_SUCCEEDED: 6734 s = "START_WPS_SUCCEEDED"; 6735 break; 6736 case WifiManager.WPS_FAILED: 6737 s = "WPS_FAILED"; 6738 break; 6739 case WifiManager.WPS_COMPLETED: 6740 s = "WPS_COMPLETED"; 6741 break; 6742 case WifiManager.RSSI_PKTCNT_FETCH: 6743 s = "RSSI_PKTCNT_FETCH"; 6744 break; 6745 case CMD_IP_CONFIGURATION_LOST: 6746 s = "CMD_IP_CONFIGURATION_LOST"; 6747 break; 6748 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6749 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6750 break; 6751 case CMD_IP_REACHABILITY_LOST: 6752 s = "CMD_IP_REACHABILITY_LOST"; 6753 break; 6754 case CMD_STATIC_IP_SUCCESS: 6755 s = "CMD_STATIC_IP_SUCCESS"; 6756 break; 6757 case CMD_STATIC_IP_FAILURE: 6758 s = "CMD_STATIC_IP_FAILURE"; 6759 break; 6760 case DhcpStateMachine.DHCP_SUCCESS: 6761 s = "DHCP_SUCCESS"; 6762 break; 6763 case DhcpStateMachine.DHCP_FAILURE: 6764 s = "DHCP_FAILURE"; 6765 break; 6766 case CMD_TARGET_BSSID: 6767 s = "CMD_TARGET_BSSID"; 6768 break; 6769 case CMD_ASSOCIATED_BSSID: 6770 s = "CMD_ASSOCIATED_BSSID"; 6771 break; 6772 case CMD_REMOVE_APP_CONFIGURATIONS: 6773 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6774 break; 6775 case CMD_REMOVE_USER_CONFIGURATIONS: 6776 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6777 break; 6778 case CMD_ROAM_WATCHDOG_TIMER: 6779 s = "CMD_ROAM_WATCHDOG_TIMER"; 6780 break; 6781 case CMD_SCREEN_STATE_CHANGED: 6782 s = "CMD_SCREEN_STATE_CHANGED"; 6783 break; 6784 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6785 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6786 break; 6787 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6788 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6789 break; 6790 case CMD_STARTED_PNO_DBG: 6791 s = "CMD_STARTED_PNO_DBG"; 6792 break; 6793 case CMD_STARTED_GSCAN_DBG: 6794 s = "CMD_STARTED_GSCAN_DBG"; 6795 break; 6796 case CMD_PNO_NETWORK_FOUND: 6797 s = "CMD_PNO_NETWORK_FOUND"; 6798 break; 6799 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6800 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6801 break; 6802 case CMD_START_IP_PACKET_OFFLOAD: 6803 s = "CMD_START_IP_PACKET_OFFLOAD"; 6804 break; 6805 case CMD_STOP_IP_PACKET_OFFLOAD: 6806 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 6807 break; 6808 case CMD_START_RSSI_MONITORING_OFFLOAD: 6809 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 6810 break; 6811 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 6812 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 6813 break; 6814 case CMD_RSSI_THRESHOLD_BREACH: 6815 s = "CMD_RSSI_THRESHOLD_BREACH"; 6816 break; 6817 case CMD_USER_SWITCH: 6818 s = "CMD_USER_SWITCH"; 6819 break; 6820 case CMD_IPV4_PROVISIONING_SUCCESS: 6821 s = "CMD_IPV4_PROVISIONING_SUCCESS"; 6822 break; 6823 case CMD_IPV4_PROVISIONING_FAILURE: 6824 s = "CMD_IPV4_PROVISIONING_FAILURE"; 6825 break; 6826 default: 6827 s = "what:" + Integer.toString(what); 6828 break; 6829 } 6830 return s; 6831 } 6832 6833 void registerConnected() { 6834 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6835 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6836 if (config != null) { 6837 //Here we will clear all disable counters once a network is connected 6838 //records how long this network is connected in future 6839 config.lastConnected = System.currentTimeMillis(); 6840 config.getNetworkSelectionStatus().clearDisableReasonCounter(); 6841 } 6842 mBadLinkspeedcount = 0; 6843 } 6844 } 6845 6846 void registerDisconnected() { 6847 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6848 long now_ms = System.currentTimeMillis(); 6849 // We are switching away from this configuration, 6850 // hence record the time we were connected last 6851 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6852 if (config != null) { 6853 config.lastDisconnected = System.currentTimeMillis(); 6854 if (config.ephemeral) { 6855 // Remove ephemeral WifiConfigurations from file 6856 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6857 } 6858 } 6859 } 6860 } 6861 6862 void noteWifiDisabledWhileAssociated() { 6863 // We got disabled by user while we were associated, make note of it 6864 int rssi = mWifiInfo.getRssi(); 6865 WifiConfiguration config = getCurrentWifiConfiguration(); 6866 if (getCurrentState() == mConnectedState 6867 && rssi != WifiInfo.INVALID_RSSI 6868 && config != null) { 6869 boolean is24GHz = mWifiInfo.is24GHz(); 6870 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 6871 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 6872 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 6873 || (!is24GHz && mWifiInfo.getRssi() 6874 < mWifiConfigStore.thresholdQualifiedRssi5.get()); 6875 boolean isHighRSSI = (is24GHz && rssi 6876 >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 6877 || (!is24GHz && mWifiInfo.getRssi() 6878 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 6879 if (isBadRSSI) { 6880 // Take note that we got disabled while RSSI was Bad 6881 config.numUserTriggeredWifiDisableLowRSSI++; 6882 } else if (isLowRSSI) { 6883 // Take note that we got disabled while RSSI was Low 6884 config.numUserTriggeredWifiDisableBadRSSI++; 6885 } else if (!isHighRSSI) { 6886 // Take note that we got disabled while RSSI was Not high 6887 config.numUserTriggeredWifiDisableNotHighRSSI++; 6888 } 6889 } 6890 } 6891 6892 WifiConfiguration getCurrentWifiConfiguration() { 6893 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6894 return null; 6895 } 6896 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6897 } 6898 6899 ScanResult getCurrentScanResult() { 6900 WifiConfiguration config = getCurrentWifiConfiguration(); 6901 if (config == null) { 6902 return null; 6903 } 6904 String BSSID = mWifiInfo.getBSSID(); 6905 if (BSSID == null) { 6906 BSSID = mTargetRoamBSSID; 6907 } 6908 ScanDetailCache scanDetailCache = 6909 mWifiConfigStore.getScanDetailCache(config); 6910 6911 if (scanDetailCache == null) { 6912 return null; 6913 } 6914 6915 return scanDetailCache.get(BSSID); 6916 } 6917 6918 String getCurrentBSSID() { 6919 if (linkDebouncing) { 6920 return null; 6921 } 6922 return mLastBssid; 6923 } 6924 6925 class ConnectModeState extends State { 6926 6927 @Override 6928 public void enter() { 6929 connectScanningService(); 6930 } 6931 6932 @Override 6933 public boolean processMessage(Message message) { 6934 WifiConfiguration config; 6935 int netId; 6936 boolean ok; 6937 boolean didDisconnect; 6938 String bssid; 6939 String ssid; 6940 NetworkUpdateResult result; 6941 logStateAndMessage(message, this); 6942 6943 switch (message.what) { 6944 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6945 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6946 didBlackListBSSID = false; 6947 bssid = (String) message.obj; 6948 if (bssid == null || TextUtils.isEmpty(bssid)) { 6949 // If BSSID is null, use the target roam BSSID 6950 bssid = mTargetRoamBSSID; 6951 } 6952 if (bssid != null) { 6953 // If we have a BSSID, tell configStore to black list it 6954 synchronized(mScanResultCache) { 6955 didBlackListBSSID = mWifiQualifiedNetworkSelector 6956 .enableBssidForQualitynetworkSelection(bssid, false); 6957 } 6958 } 6959 6960 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 6961 WifiConfiguration.NetworkSelectionStatus 6962 .DISABLED_ASSOCIATION_REJECTION); 6963 6964 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6965 break; 6966 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6967 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6968 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6969 if (mTargetNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6970 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 6971 WifiConfiguration.NetworkSelectionStatus 6972 .DISABLED_AUTHENTICATION_FAILURE); 6973 } 6974 break; 6975 case WifiMonitor.SSID_TEMP_DISABLED: 6976 Log.e(TAG, "Supplicant SSID temporary disabled:" 6977 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 6978 mWifiConfigStore.updateNetworkSelectionStatus( 6979 message.arg1, 6980 WifiConfiguration.NetworkSelectionStatus 6981 .DISABLED_AUTHENTICATION_FAILURE); 6982 break; 6983 case WifiMonitor.SSID_REENABLED: 6984 Log.d(TAG, "Supplicant SSID reenable:" 6985 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 6986 // Do not re-enable it in Quality Network Selection since framework has its own 6987 // Algorithm of disable/enable 6988 break; 6989 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6990 SupplicantState state = handleSupplicantStateChange(message); 6991 // A driver/firmware hang can now put the interface in a down state. 6992 // We detect the interface going down and recover from it 6993 if (!SupplicantState.isDriverActive(state)) { 6994 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6995 handleNetworkDisconnect(); 6996 } 6997 log("Detected an interface down, restart driver"); 6998 transitionTo(mDriverStoppedState); 6999 sendMessage(CMD_START_DRIVER); 7000 break; 7001 } 7002 7003 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7004 // when authentication times out after a successful connection, 7005 // we can figure this from the supplicant state. If supplicant 7006 // state is DISCONNECTED, but the mNetworkInfo says we are not 7007 // disconnected, we need to handle a disconnection 7008 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7009 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7010 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7011 handleNetworkDisconnect(); 7012 transitionTo(mDisconnectedState); 7013 } 7014 7015 // If we have COMPLETED a connection to a BSSID, start doing 7016 // DNAv4/DNAv6 -style probing for on-link neighbors of 7017 // interest (e.g. routers); harmless if none are configured. 7018 if (state == SupplicantState.COMPLETED) { 7019 mIpManager.confirmConfiguration(); 7020 } 7021 break; 7022 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7023 if (message.arg1 == 1) { 7024 mWifiNative.disconnect(); 7025 mTemporarilyDisconnectWifi = true; 7026 } else { 7027 mWifiNative.reconnect(); 7028 mTemporarilyDisconnectWifi = false; 7029 } 7030 break; 7031 case CMD_ADD_OR_UPDATE_NETWORK: 7032 // Only the current foreground user can modify networks. 7033 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7034 loge("Only the current foreground user can modify networks " 7035 + " currentUserId=" + mCurrentUserId 7036 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7037 replyToMessage(message, message.what, FAILURE); 7038 break; 7039 } 7040 7041 config = (WifiConfiguration) message.obj; 7042 7043 if (!recordUidIfAuthorized(config, message.sendingUid, 7044 /* onlyAnnotate */ false)) { 7045 logw("Not authorized to update network " 7046 + " config=" + config.SSID 7047 + " cnid=" + config.networkId 7048 + " uid=" + message.sendingUid); 7049 replyToMessage(message, message.what, FAILURE); 7050 break; 7051 } 7052 7053 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7054 if (res < 0) { 7055 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7056 } else { 7057 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7058 if (curConfig != null && config != null) { 7059 if (curConfig.priority < config.priority 7060 && config.status == WifiConfiguration.Status.ENABLED) { 7061 // Interpret this as a connect attempt 7062 // Set the last selected configuration so as to allow the system to 7063 // stick the last user choice without persisting the choice 7064 mWifiConfigStore.setAndEnableLastSelectedConfiguration(res); 7065 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7066 boolean persist = mWifiConfigStore 7067 .checkConfigOverridePermission(message.sendingUid); 7068 mWifiQualifiedNetworkSelector 7069 .userSelectNetwork(res, persist); 7070 7071 // Remember time of last connection attempt 7072 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7073 //Create clearcut connection event of type USER_SELECTED 7074 mWifiMetrics.startConnectionEvent(mWifiInfo, 7075 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7076 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7077 7078 // As a courtesy to the caller, trigger a scan now 7079 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7080 } 7081 } 7082 } 7083 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7084 break; 7085 case CMD_REMOVE_NETWORK: 7086 // Only the current foreground user can modify networks. 7087 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7088 loge("Only the current foreground user can modify networks " 7089 + " currentUserId=" + mCurrentUserId 7090 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7091 replyToMessage(message, message.what, FAILURE); 7092 break; 7093 } 7094 netId = message.arg1; 7095 7096 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7097 /* onlyAnnotate */ false)) { 7098 logw("Not authorized to remove network " 7099 + " cnid=" + netId 7100 + " uid=" + message.sendingUid); 7101 replyToMessage(message, message.what, FAILURE); 7102 break; 7103 } 7104 7105 ok = mWifiConfigStore.removeNetwork(message.arg1); 7106 if (!ok) { 7107 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7108 } 7109 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7110 break; 7111 case CMD_ENABLE_NETWORK: 7112 // Only the current foreground user can modify networks. 7113 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7114 loge("Only the current foreground user can modify networks " 7115 + " currentUserId=" + mCurrentUserId 7116 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7117 replyToMessage(message, message.what, FAILURE); 7118 break; 7119 } 7120 7121 boolean disableOthers = message.arg2 == 1; 7122 netId = message.arg1; 7123 config = mWifiConfigStore.getWifiConfiguration(netId); 7124 if (config == null) { 7125 loge("No network with id = " + netId); 7126 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7127 replyToMessage(message, message.what, FAILURE); 7128 break; 7129 } 7130 7131 // disable other only means select this network, does not mean all other 7132 // networks need to be disabled 7133 if (disableOthers) { 7134 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7135 // Remember time of last connection attempt 7136 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7137 mWifiMetrics.startConnectionEvent(mWifiInfo, 7138 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7139 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7140 } 7141 // Cancel auto roam requests 7142 autoRoamSetBSSID(netId, "any"); 7143 7144 int uid = message.sendingUid; 7145 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7146 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7147 if (!ok) { 7148 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7149 } else if (disableOthers) { 7150 mTargetNetworkId = netId; 7151 } 7152 7153 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7154 break; 7155 case CMD_ENABLE_ALL_NETWORKS: 7156 long time = android.os.SystemClock.elapsedRealtime(); 7157 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7158 mWifiConfigStore.enableAllNetworks(); 7159 mLastEnableAllNetworksTime = time; 7160 } 7161 break; 7162 case WifiManager.DISABLE_NETWORK: 7163 if (mWifiConfigStore.updateNetworkSelectionStatus(message.arg1, 7164 WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WIFI_MANAGER)) { 7165 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7166 } else { 7167 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7168 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7169 WifiManager.ERROR); 7170 } 7171 break; 7172 case CMD_DISABLE_EPHEMERAL_NETWORK: 7173 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7174 if (config != null) { 7175 if (config.networkId == mLastNetworkId) { 7176 // Disconnect and let autojoin reselect a new network 7177 sendMessage(CMD_DISCONNECT); 7178 } 7179 } 7180 break; 7181 case CMD_BLACKLIST_NETWORK: 7182 mWifiConfigStore.blackListBssid((String) message.obj); 7183 break; 7184 case CMD_CLEAR_BLACKLIST: 7185 mWifiConfigStore.clearBssidBlacklist(); 7186 break; 7187 case CMD_SAVE_CONFIG: 7188 ok = mWifiConfigStore.saveConfig(); 7189 7190 if (DBG) logd("did save config " + ok); 7191 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7192 7193 // Inform the backup manager about a data change 7194 IBackupManager ibm = IBackupManager.Stub.asInterface( 7195 mFacade.getService(Context.BACKUP_SERVICE)); 7196 if (ibm != null) { 7197 try { 7198 ibm.dataChanged("com.android.providers.settings"); 7199 } catch (Exception e) { 7200 // Try again later 7201 } 7202 } 7203 break; 7204 case CMD_GET_CONFIGURED_NETWORKS: 7205 replyToMessage(message, message.what, 7206 mWifiConfigStore.getConfiguredNetworks()); 7207 break; 7208 case WifiMonitor.SUP_REQUEST_IDENTITY: 7209 int networkId = message.arg2; 7210 boolean identitySent = false; 7211 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7212 7213 if (targetWificonfiguration != null 7214 && targetWificonfiguration.enterpriseConfig != null) { 7215 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7216 } 7217 7218 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7219 if (targetWificonfiguration != null 7220 && targetWificonfiguration.networkId == networkId 7221 && targetWificonfiguration.allowedKeyManagement 7222 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7223 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7224 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7225 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7226 TelephonyManager tm = (TelephonyManager) 7227 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7228 if (tm != null) { 7229 String imsi = tm.getSubscriberId(); 7230 String mccMnc = ""; 7231 7232 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7233 mccMnc = tm.getSimOperator(); 7234 7235 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7236 7237 if (!identity.isEmpty()) { 7238 mWifiNative.simIdentityResponse(networkId, identity); 7239 identitySent = true; 7240 } 7241 } 7242 } 7243 if (!identitySent) { 7244 // Supplicant lacks credentials to connect to that network, hence black list 7245 ssid = (String) message.obj; 7246 if (targetWificonfiguration != null && ssid != null 7247 && targetWificonfiguration.SSID != null 7248 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7249 mWifiConfigStore.updateNetworkSelectionStatus(targetWificonfiguration, 7250 WifiConfiguration.NetworkSelectionStatus 7251 .DISABLED_AUTHENTICATION_NO_CREDENTIALS); 7252 } 7253 // Disconnect now, as we don't have any way to fullfill 7254 // the supplicant request. 7255 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 7256 WifiConfiguration.INVALID_NETWORK_ID); 7257 mWifiNative.disconnect(); 7258 } 7259 break; 7260 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7261 logd("Received SUP_REQUEST_SIM_AUTH"); 7262 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7263 if (requestData != null) { 7264 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7265 handleGsmAuthRequest(requestData); 7266 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7267 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7268 handle3GAuthRequest(requestData); 7269 } 7270 } else { 7271 loge("Invalid sim auth request"); 7272 } 7273 break; 7274 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7275 replyToMessage(message, message.what, 7276 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7277 break; 7278 case CMD_GET_MATCHING_CONFIG: 7279 replyToMessage(message, message.what, 7280 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7281 break; 7282 /* Do a redundant disconnect without transition */ 7283 case CMD_DISCONNECT: 7284 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7285 (WifiConfiguration.INVALID_NETWORK_ID); 7286 mWifiNative.disconnect(); 7287 break; 7288 case CMD_RECONNECT: 7289 WifiConfiguration candidate = 7290 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(true, 7291 mAllowUntrustedConnections, mScanResults, linkDebouncing, 7292 isConnected(), isDisconnected(), isSupplicantTransientState()); 7293 tryToConnectToNetwork(candidate); 7294 break; 7295 case CMD_REASSOCIATE: 7296 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7297 mWifiMetrics.startConnectionEvent(mWifiInfo); 7298 mWifiNative.reassociate(); 7299 break; 7300 case CMD_RELOAD_TLS_AND_RECONNECT: 7301 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7302 logd("Reconnecting to give a chance to un-connected TLS networks"); 7303 mWifiNative.disconnect(); 7304 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7305 mWifiMetrics.startConnectionEvent(mWifiInfo); 7306 mWifiNative.reconnect(); 7307 } 7308 break; 7309 case CMD_AUTO_ROAM: 7310 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7311 return HANDLED; 7312 case CMD_AUTO_CONNECT: 7313 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7314 * associated status to the STATUS command but somehow-someplace still thinks 7315 * it is associated and thus will ignore select/reconnect command with 7316 * following message: 7317 * "Already associated with the selected network - do nothing" 7318 * 7319 * Hence, sends a disconnect to supplicant first. 7320 */ 7321 didDisconnect = false; 7322 if (getCurrentState() != mDisconnectedState) { 7323 /** Supplicant will ignore the reconnect if we are currently associated, 7324 * hence trigger a disconnect 7325 */ 7326 didDisconnect = true; 7327 mWifiNative.disconnect(); 7328 } 7329 7330 /* connect command coming from auto-join */ 7331 netId = message.arg1; 7332 mTargetNetworkId = netId; 7333 mTargetRoamBSSID = (String) message.obj; 7334 config = mWifiConfigStore.getWifiConfiguration(netId); 7335 logd("CMD_AUTO_CONNECT sup state " 7336 + mSupplicantStateTracker.getSupplicantStateName() 7337 + " my state " + getCurrentState().getName() 7338 + " nid=" + Integer.toString(netId) 7339 + " roam=" + Boolean.toString(mAutoRoaming)); 7340 if (config == null) { 7341 loge("AUTO_CONNECT and no config, bail out..."); 7342 break; 7343 } 7344 7345 /* Make sure we cancel any previous roam request */ 7346 setTargetBssid(config, mTargetRoamBSSID); 7347 7348 /* Save the network config */ 7349 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7350 + " nid=" + Integer.toString(netId)); 7351 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7352 netId = result.getNetworkId(); 7353 logd("CMD_AUTO_CONNECT did save config -> " 7354 + " nid=" + Integer.toString(netId)); 7355 7356 // Since we updated the config,read it back from config store: 7357 config = mWifiConfigStore.getWifiConfiguration(netId); 7358 if (config == null) { 7359 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7360 break; 7361 } 7362 if (netId != config.networkId) { 7363 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7364 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7365 break; 7366 } 7367 7368 if (deferForUserInput(message, netId, false)) { 7369 break; 7370 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7371 WifiConfiguration.USER_BANNED) { 7372 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7373 WifiManager.NOT_AUTHORIZED); 7374 break; 7375 } 7376 7377 // Make sure the network is enabled, since supplicant will not reenable it 7378 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7379 7380 // If we're autojoining a network that the user or an app explicitly selected, 7381 // keep track of the UID that selected it. 7382 // TODO(b/26786318): Keep track of the lastSelectedConfiguration and the 7383 // lastConnectUid on a per-user basis. 7384 int lastConnectUid = WifiConfiguration.UNKNOWN_UID; 7385 if (mWifiConfigStore.isLastSelectedConfiguration(config) 7386 && UserHandle.getUserId(config.lastConnectUid) == mCurrentUserId) { 7387 lastConnectUid = config.lastConnectUid; 7388 } 7389 7390 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7391 lastConnectUid) && mWifiNative.reconnect()) { 7392 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7393 mWifiMetrics.startConnectionEvent(mWifiInfo, 7394 WifiMetricsProto.ConnectionEvent.ROAM_UNRELATED); 7395 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7396 config = mWifiConfigStore.getWifiConfiguration(netId); 7397 if (config != null 7398 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7399 // If we autojoined a different config than the user selected one, 7400 // it means we could not see the last user selection, 7401 // or that the last user selection was faulty and ended up blacklisted 7402 // for some reason (in which case the user is notified with an error 7403 // message in the Wifi picker), and thus we managed to auto-join away 7404 // from the selected config. -> in that case we need to forget 7405 // the selection because we don't want to abruptly switch back to it. 7406 // 7407 // Note that the user selection is also forgotten after a period of time 7408 // during which the device has been disconnected. 7409 // The default value is 30 minutes : see the code path at bottom of 7410 // setScanResults() function. 7411 mWifiConfigStore. 7412 setAndEnableLastSelectedConfiguration( 7413 WifiConfiguration.INVALID_NETWORK_ID); 7414 } 7415 mAutoRoaming = false; 7416 if (isRoaming() || linkDebouncing) { 7417 transitionTo(mRoamingState); 7418 } else if (didDisconnect) { 7419 transitionTo(mDisconnectingState); 7420 } else { 7421 /* Already in disconnected state, nothing to change */ 7422 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7423 int delay = 60 * 1000; 7424 if (VDBG) { 7425 logd("Starting PNO alarm: " + delay); 7426 } 7427 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7428 System.currentTimeMillis() + delay, 7429 mPnoIntent); 7430 } 7431 mRestartAutoJoinOffloadCounter++; 7432 } 7433 } else { 7434 loge("Failed to connect config: " + config + " netId: " + netId); 7435 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7436 WifiManager.ERROR); 7437 break; 7438 } 7439 break; 7440 case CMD_REMOVE_APP_CONFIGURATIONS: 7441 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7442 break; 7443 case CMD_REMOVE_USER_CONFIGURATIONS: 7444 mWifiConfigStore.removeNetworksForUser(message.arg1); 7445 break; 7446 case WifiManager.CONNECT_NETWORK: 7447 // Only the current foreground user can modify networks. 7448 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7449 loge("Only the current foreground user can modify networks " 7450 + " currentUserId=" + mCurrentUserId 7451 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7452 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7453 WifiManager.NOT_AUTHORIZED); 7454 break; 7455 } 7456 7457 /** 7458 * The connect message can contain a network id passed as arg1 on message or 7459 * or a config passed as obj on message. 7460 * For a new network, a config is passed to create and connect. 7461 * For an existing network, a network id is passed 7462 */ 7463 netId = message.arg1; 7464 config = (WifiConfiguration) message.obj; 7465 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7466 boolean updatedExisting = false; 7467 7468 /* Save the network config */ 7469 if (config != null) { 7470 // When connecting to an access point, WifiStateMachine wants to update the 7471 // relevant config with administrative data. This update should not be 7472 // considered a 'real' update, therefore lockdown by Device Owner must be 7473 // disregarded. 7474 if (!recordUidIfAuthorized(config, message.sendingUid, 7475 /* onlyAnnotate */ true)) { 7476 logw("Not authorized to update network " 7477 + " config=" + config.SSID 7478 + " cnid=" + config.networkId 7479 + " uid=" + message.sendingUid); 7480 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7481 WifiManager.NOT_AUTHORIZED); 7482 break; 7483 } 7484 7485 String configKey = config.configKey(true /* allowCached */); 7486 WifiConfiguration savedConfig = 7487 mWifiConfigStore.getWifiConfiguration(configKey); 7488 if (savedConfig != null) { 7489 // There is an existing config with this netId, but it wasn't exposed 7490 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7491 // getConfiguredNetworks). Remove those bits and update the config. 7492 config = savedConfig; 7493 logd("CONNECT_NETWORK updating existing config with id=" + 7494 config.networkId + " configKey=" + configKey); 7495 config.ephemeral = false; 7496 mWifiConfigStore.updateNetworkSelectionStatus(config, 7497 WifiConfiguration.NetworkSelectionStatus 7498 .NETWORK_SELECTION_ENABLE); 7499 updatedExisting = true; 7500 } 7501 7502 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7503 netId = result.getNetworkId(); 7504 } 7505 config = mWifiConfigStore.getWifiConfiguration(netId); 7506 7507 if (config == null) { 7508 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7509 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7510 + getCurrentState().getName()); 7511 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7512 WifiManager.ERROR); 7513 break; 7514 } 7515 mTargetNetworkId = netId; 7516 autoRoamSetBSSID(netId, "any"); 7517 7518 if (message.sendingUid == Process.WIFI_UID 7519 || message.sendingUid == Process.SYSTEM_UID) { 7520 // As a sanity measure, clear the BSSID in the supplicant network block. 7521 // If system or Wifi Settings want to connect, they will not 7522 // specify the BSSID. 7523 // If an app however had added a BSSID to this configuration, and the BSSID 7524 // was wrong, Then we would forever fail to connect until that BSSID 7525 // is cleaned up. 7526 clearConfigBSSID(config, "CONNECT_NETWORK"); 7527 } 7528 7529 if (deferForUserInput(message, netId, true)) { 7530 break; 7531 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7532 WifiConfiguration.USER_BANNED) { 7533 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7534 WifiManager.NOT_AUTHORIZED); 7535 break; 7536 } 7537 7538 mAutoRoaming = false; 7539 7540 /* Tell network selection the user did try to connect to that network if from 7541 settings */ 7542 boolean persist = 7543 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7544 7545 7546 mWifiConfigStore.setAndEnableLastSelectedConfiguration(netId); 7547 mWifiQualifiedNetworkSelector.userSelectNetwork(netId, persist); 7548 didDisconnect = false; 7549 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7550 && mLastNetworkId != netId) { 7551 /** Supplicant will ignore the reconnect if we are currently associated, 7552 * hence trigger a disconnect 7553 */ 7554 didDisconnect = true; 7555 mWifiNative.disconnect(); 7556 } 7557 7558 // Make sure the network is enabled, since supplicant will not reenable it 7559 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7560 7561 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7562 message.sendingUid) && mWifiNative.reconnect()) { 7563 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7564 mWifiMetrics.startConnectionEvent(mWifiInfo, 7565 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7566 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7567 7568 /* The state tracker handles enabling networks upon completion/failure */ 7569 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7570 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7571 if (didDisconnect) { 7572 /* Expect a disconnection from the old connection */ 7573 transitionTo(mDisconnectingState); 7574 } else if (updatedExisting && getCurrentState() == mConnectedState && 7575 getCurrentWifiConfiguration().networkId == netId) { 7576 // Update the current set of network capabilities, but stay in the 7577 // current state. 7578 updateCapabilities(config); 7579 } else { 7580 /** 7581 * Directly go to disconnected state where we 7582 * process the connection events from supplicant 7583 */ 7584 transitionTo(mDisconnectedState); 7585 } 7586 } else { 7587 loge("Failed to connect config: " + config + " netId: " + netId); 7588 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7589 WifiManager.ERROR); 7590 break; 7591 } 7592 break; 7593 case WifiManager.SAVE_NETWORK: 7594 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7595 // Fall thru 7596 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7597 // Only the current foreground user can modify networks. 7598 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7599 loge("Only the current foreground user can modify networks " 7600 + " currentUserId=" + mCurrentUserId 7601 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7602 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7603 WifiManager.NOT_AUTHORIZED); 7604 break; 7605 } 7606 7607 lastSavedConfigurationAttempt = null; // Used for debug 7608 config = (WifiConfiguration) message.obj; 7609 if (config == null) { 7610 loge("ERROR: SAVE_NETWORK with null configuration" 7611 + mSupplicantStateTracker.getSupplicantStateName() 7612 + " my state " + getCurrentState().getName()); 7613 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7614 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7615 WifiManager.ERROR); 7616 break; 7617 } 7618 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7619 int nid = config.networkId; 7620 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7621 + " config=" + config.SSID 7622 + " nid=" + config.networkId 7623 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7624 + " my state " + getCurrentState().getName()); 7625 7626 // Only record the uid if this is user initiated 7627 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7628 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7629 /* onlyAnnotate */ false)) { 7630 logw("Not authorized to update network " 7631 + " config=" + config.SSID 7632 + " cnid=" + config.networkId 7633 + " uid=" + message.sendingUid); 7634 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7635 WifiManager.NOT_AUTHORIZED); 7636 break; 7637 } 7638 7639 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7640 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7641 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7642 if (result.hasIpChanged()) { 7643 // The currently connection configuration was changed 7644 // We switched from DHCP to static or from static to DHCP, or the 7645 // static IP address has changed. 7646 log("Reconfiguring IP on connection"); 7647 // TODO: clear addresses and disable IPv6 7648 // to simplify obtainingIpState. 7649 transitionTo(mObtainingIpState); 7650 } 7651 if (result.hasProxyChanged()) { 7652 log("Reconfiguring proxy on connection"); 7653 notifyLinkProperties(); 7654 } 7655 } 7656 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7657 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7658 7659 if (VDBG) { 7660 logd("Success save network nid=" 7661 + Integer.toString(result.getNetworkId())); 7662 } 7663 7664 synchronized(mScanResultCache) { 7665 /** 7666 * If the command comes from WifiManager, then 7667 * tell autojoin the user did try to modify and save that network, 7668 * and interpret the SAVE_NETWORK as a request to connect 7669 */ 7670 boolean user = message.what == WifiManager.SAVE_NETWORK; 7671 7672 // Did this connect come from settings 7673 boolean persistConnect = 7674 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7675 7676 if (user) { 7677 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7678 mWifiConfigStore.writeKnownNetworkHistory(); 7679 } 7680 //Fixme, CMD_AUTO_SAVE_NETWORK can be cleaned 7681 mWifiQualifiedNetworkSelector.userSelectNetwork( 7682 result.getNetworkId(), persistConnect); 7683 candidate = mWifiQualifiedNetworkSelector.selectQualifiedNetwork(true, 7684 mAllowUntrustedConnections, mScanResults, linkDebouncing, 7685 isConnected(), isDisconnected(), isSupplicantTransientState()); 7686 tryToConnectToNetwork(candidate); 7687 } 7688 } else { 7689 loge("Failed to save network"); 7690 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7691 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7692 WifiManager.ERROR); 7693 } 7694 break; 7695 case WifiManager.FORGET_NETWORK: 7696 // Only the current foreground user can modify networks. 7697 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7698 loge("Only the current foreground user can modify networks " 7699 + " currentUserId=" + mCurrentUserId 7700 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7701 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7702 WifiManager.NOT_AUTHORIZED); 7703 break; 7704 } 7705 7706 // Debug only, remember last configuration that was forgotten 7707 WifiConfiguration toRemove 7708 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7709 if (toRemove == null) { 7710 lastForgetConfigurationAttempt = null; 7711 } else { 7712 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7713 } 7714 // check that the caller owns this network 7715 netId = message.arg1; 7716 7717 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7718 /* onlyAnnotate */ false)) { 7719 logw("Not authorized to forget network " 7720 + " cnid=" + netId 7721 + " uid=" + message.sendingUid); 7722 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7723 WifiManager.NOT_AUTHORIZED); 7724 break; 7725 } 7726 7727 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7728 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7729 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7730 (WifiConfiguration) message.obj); 7731 } else { 7732 loge("Failed to forget network"); 7733 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7734 WifiManager.ERROR); 7735 } 7736 break; 7737 case WifiManager.START_WPS: 7738 WpsInfo wpsInfo = (WpsInfo) message.obj; 7739 WpsResult wpsResult; 7740 switch (wpsInfo.setup) { 7741 case WpsInfo.PBC: 7742 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7743 break; 7744 case WpsInfo.KEYPAD: 7745 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7746 break; 7747 case WpsInfo.DISPLAY: 7748 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7749 break; 7750 default: 7751 wpsResult = new WpsResult(Status.FAILURE); 7752 loge("Invalid setup for WPS"); 7753 break; 7754 } 7755 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7756 (WifiConfiguration.INVALID_NETWORK_ID); 7757 if (wpsResult.status == Status.SUCCESS) { 7758 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7759 transitionTo(mWpsRunningState); 7760 } else { 7761 loge("Failed to start WPS with config " + wpsInfo.toString()); 7762 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7763 } 7764 break; 7765 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7766 if (DBG) log("Network connection established"); 7767 mLastNetworkId = message.arg1; 7768 mLastBssid = (String) message.obj; 7769 7770 mWifiInfo.setBSSID(mLastBssid); 7771 mWifiInfo.setNetworkId(mLastNetworkId); 7772 7773 sendNetworkStateChangeBroadcast(mLastBssid); 7774 transitionTo(mObtainingIpState); 7775 break; 7776 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7777 // Calling handleNetworkDisconnect here is redundant because we might already 7778 // have called it when leaving L2ConnectedState to go to disconnecting state 7779 // or thru other path 7780 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7781 // if they are valid, and only in this case call handleNEtworkDisconnect, 7782 // TODO: this should be fixed for a L MR release 7783 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7784 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7785 // at the chip etc... 7786 if (DBG) log("ConnectModeState: Network connection lost "); 7787 handleNetworkDisconnect(); 7788 transitionTo(mDisconnectedState); 7789 break; 7790 case CMD_PNO_NETWORK_FOUND: 7791 processPnoNetworkFound((ScanResult[]) message.obj); 7792 break; 7793 case CMD_ADD_PASSPOINT_MO: 7794 res = mWifiConfigStore.addPasspointManagementObject((String) message.obj); 7795 replyToMessage(message, message.what, res); 7796 break; 7797 case CMD_MODIFY_PASSPOINT_MO: 7798 if (message.obj != null) { 7799 Bundle bundle = (Bundle) message.obj; 7800 ArrayList<PasspointManagementObjectDefinition> mos = 7801 bundle.getParcelableArrayList("MOS"); 7802 res = mWifiConfigStore.modifyPasspointMo(bundle.getString("FQDN"), mos); 7803 } else { 7804 res = 0; 7805 } 7806 replyToMessage(message, message.what, res); 7807 7808 break; 7809 case CMD_QUERY_OSU_ICON: 7810 if (mWifiConfigStore.queryPasspointIcon( 7811 ((Bundle) message.obj).getLong("BSSID"), 7812 ((Bundle) message.obj).getString("FILENAME"))) { 7813 res = 1; 7814 } else { 7815 res = 0; 7816 } 7817 replyToMessage(message, message.what, res); 7818 break; 7819 case CMD_MATCH_PROVIDER_NETWORK: 7820 res = mWifiConfigStore.matchProviderWithCurrentNetwork((String) message.obj); 7821 replyToMessage(message, message.what, res); 7822 break; 7823 default: 7824 return NOT_HANDLED; 7825 } 7826 return HANDLED; 7827 } 7828 } 7829 7830 private void updateCapabilities(WifiConfiguration config) { 7831 NetworkCapabilities networkCapabilities = new NetworkCapabilities(mDfltNetworkCapabilities); 7832 if (config != null) { 7833 if (config.ephemeral) { 7834 networkCapabilities.removeCapability( 7835 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7836 } else { 7837 networkCapabilities.addCapability( 7838 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7839 } 7840 networkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7841 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7842 } 7843 mNetworkAgent.sendNetworkCapabilities(networkCapabilities); 7844 } 7845 7846 private class WifiNetworkAgent extends NetworkAgent { 7847 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7848 NetworkCapabilities nc, LinkProperties lp, int score) { 7849 super(l, c, TAG, ni, nc, lp, score); 7850 } 7851 protected void unwanted() { 7852 // Ignore if we're not the current networkAgent. 7853 if (this != mNetworkAgent) return; 7854 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7855 + Integer.toString(mWifiInfo.score)); 7856 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7857 } 7858 7859 @Override 7860 protected void networkStatus(int status) { 7861 if (this != mNetworkAgent) return; 7862 if (status == NetworkAgent.INVALID_NETWORK) { 7863 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7864 + Integer.toString(mWifiInfo.score)); 7865 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7866 } else if (status == NetworkAgent.VALID_NETWORK) { 7867 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7868 + Integer.toString(mWifiInfo.score)); 7869 doNetworkStatus(status); 7870 } 7871 } 7872 7873 @Override 7874 protected void saveAcceptUnvalidated(boolean accept) { 7875 if (this != mNetworkAgent) return; 7876 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7877 } 7878 7879 @Override 7880 protected void startPacketKeepalive(Message msg) { 7881 WifiStateMachine.this.sendMessage( 7882 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7883 } 7884 7885 @Override 7886 protected void stopPacketKeepalive(Message msg) { 7887 WifiStateMachine.this.sendMessage( 7888 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7889 } 7890 7891 @Override 7892 protected void setSignalStrengthThresholds(int[] thresholds) { 7893 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 7894 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 7895 // MAX_VALUE at the start/end of the thresholds array if necessary. 7896 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 7897 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 7898 // re-arm the hardware event. This needs to be done on the state machine thread to 7899 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 7900 // sent in the NetworkCapabilities) must be the one received from the hardware event 7901 // received, or we might skip callbacks. 7902 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 7903 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 7904 if (thresholds.length == 0) { 7905 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7906 mWifiInfo.getRssi()); 7907 return; 7908 } 7909 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 7910 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 7911 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 7912 Arrays.sort(rssiVals); 7913 byte[] rssiRange = new byte[rssiVals.length]; 7914 for (int i = 0; i < rssiVals.length; i++) { 7915 int val = rssiVals[i]; 7916 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 7917 rssiRange[i] = (byte) val; 7918 } else { 7919 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 7920 + Arrays.toString(rssiVals)); 7921 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7922 mWifiInfo.getRssi()); 7923 return; 7924 } 7925 } 7926 // TODO: Do we quash rssi values in this sorted array which are very close? 7927 mRssiRanges = rssiRange; 7928 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 7929 mWifiInfo.getRssi()); 7930 } 7931 7932 @Override 7933 protected void preventAutomaticReconnect() { 7934 if (this != mNetworkAgent) return; 7935 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 7936 } 7937 } 7938 7939 void unwantedNetwork(int reason) { 7940 sendMessage(CMD_UNWANTED_NETWORK, reason); 7941 } 7942 7943 void doNetworkStatus(int status) { 7944 sendMessage(CMD_NETWORK_STATUS, status); 7945 } 7946 7947 // rfc4186 & rfc4187: 7948 // create Permanent Identity base on IMSI, 7949 // identity = usernam@realm 7950 // with username = prefix | IMSI 7951 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7952 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7953 String mcc; 7954 String mnc; 7955 String prefix; 7956 7957 if (imsi == null || imsi.isEmpty()) 7958 return ""; 7959 7960 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7961 prefix = "1"; 7962 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7963 prefix = "0"; 7964 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7965 prefix = "6"; 7966 else // not a valide EapMethod 7967 return ""; 7968 7969 /* extract mcc & mnc from mccMnc */ 7970 if (mccMnc != null && !mccMnc.isEmpty()) { 7971 mcc = mccMnc.substring(0, 3); 7972 mnc = mccMnc.substring(3); 7973 if (mnc.length() == 2) 7974 mnc = "0" + mnc; 7975 } else { 7976 // extract mcc & mnc from IMSI, assume mnc size is 3 7977 mcc = imsi.substring(0, 3); 7978 mnc = imsi.substring(3, 6); 7979 } 7980 7981 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7982 } 7983 7984 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7985 if (config == null) 7986 return false; 7987 7988 // We are still seeing a fairly high power consumption triggered by autojoin scans 7989 // Hence do partial scans only for PSK configuration that are roamable since the 7990 // primary purpose of the partial scans is roaming. 7991 // Full badn scans with exponential backoff for the purpose or extended roaming and 7992 // network switching are performed unconditionally. 7993 ScanDetailCache scanDetailCache = 7994 mWifiConfigStore.getScanDetailCache(config); 7995 if (scanDetailCache == null 7996 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7997 || scanDetailCache.size() > 6) { 7998 //return true but to not trigger the scan 7999 return true; 8000 } 8001 HashSet<Integer> freqs = mWifiConfigStore.makeChannelList(config, 8002 ONE_HOUR_MILLI, restrictChannelList); 8003 if (freqs != null && freqs.size() != 0) { 8004 //if (DBG) { 8005 logd("starting scan for " + config.configKey() + " with " + freqs); 8006 //} 8007 // Call wifi native to start the scan 8008 if (startScanNative( 8009 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, freqs)) { 8010 // Only count battery consumption if scan request is accepted 8011 noteScanStart(SCAN_ALARM_SOURCE, null); 8012 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8013 } else { 8014 // used for debug only, mark scan as failed 8015 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8016 } 8017 return true; 8018 } else { 8019 if (DBG) logd("no channels for " + config.configKey()); 8020 return false; 8021 } 8022 } 8023 8024 void clearCurrentConfigBSSID(String dbg) { 8025 // Clear the bssid in the current config's network block 8026 WifiConfiguration config = getCurrentWifiConfiguration(); 8027 if (config == null) 8028 return; 8029 clearConfigBSSID(config, dbg); 8030 } 8031 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8032 if (config == null) 8033 return; 8034 if (DBG) { 8035 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8036 + " config.NetworkSelectionStatus.mNetworkSelectionBSSID " 8037 + config.getNetworkSelectionStatus().getNetworkSelectionBSSID()); 8038 } 8039 config.getNetworkSelectionStatus().setNetworkSelectionBSSID("any"); 8040 if (DBG) { 8041 logd(dbg + " " + config.SSID 8042 + " nid=" + Integer.toString(config.networkId)); 8043 } 8044 mWifiConfigStore.saveWifiConfigBSSID(config); 8045 } 8046 8047 class L2ConnectedState extends State { 8048 @Override 8049 public void enter() { 8050 mRssiPollToken++; 8051 if (mEnableRssiPolling) { 8052 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8053 } 8054 if (mNetworkAgent != null) { 8055 loge("Have NetworkAgent when entering L2Connected"); 8056 setNetworkDetailedState(DetailedState.DISCONNECTED); 8057 } 8058 setNetworkDetailedState(DetailedState.CONNECTING); 8059 8060 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8061 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8062 } 8063 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8064 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8065 mLinkProperties, 60); 8066 8067 // We must clear the config BSSID, as the wifi chipset may decide to roam 8068 // from this point on and having the BSSID specified in the network block would 8069 // cause the roam to faile and the device to disconnect 8070 clearCurrentConfigBSSID("L2ConnectedState"); 8071 } 8072 8073 @Override 8074 public void exit() { 8075 mIpManager.stop(); 8076 8077 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8078 // Bug: 15347363 8079 // For paranoia's sake, call handleNetworkDisconnect 8080 // only if BSSID is null or last networkId 8081 // is not invalid. 8082 if (DBG) { 8083 StringBuilder sb = new StringBuilder(); 8084 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8085 if (mLastBssid !=null) { 8086 sb.append(" ").append(mLastBssid); 8087 } 8088 } 8089 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8090 handleNetworkDisconnect(); 8091 } 8092 } 8093 8094 @Override 8095 public boolean processMessage(Message message) { 8096 logStateAndMessage(message, this); 8097 8098 switch (message.what) { 8099 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8100 handlePreDhcpSetup(); 8101 break; 8102 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 8103 mIpManager.completedPreDhcpAction(); 8104 break; 8105 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8106 handlePostDhcpSetup(); 8107 // We advance to mConnectedState because IpManager will also send a 8108 // CMD_IPV4_PROVISIONING_SUCCESS message, which calls handleIPv4Success(), 8109 // which calls updateLinkProperties, which then sends 8110 // CMD_IP_CONFIGURATION_SUCCESSFUL. 8111 // 8112 // In the event of failure, we transition to mDisconnectingState 8113 // similarly--via messages sent back from IpManager. 8114 break; 8115 case CMD_IPV4_PROVISIONING_SUCCESS: { 8116 handleIPv4Success((DhcpResults) message.obj); 8117 break; 8118 } 8119 case CMD_IPV4_PROVISIONING_FAILURE: { 8120 handleIPv4Failure(); 8121 break; 8122 } 8123 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8124 handleSuccessfulIpConfiguration(); 8125 mWifiMetrics.endConnectionEvent(0, WifiMetricsProto.ConnectionEvent.HLF_NONE); 8126 sendConnectedState(); 8127 transitionTo(mConnectedState); 8128 break; 8129 case CMD_IP_CONFIGURATION_LOST: 8130 // Get Link layer stats so that we get fresh tx packet counters. 8131 getWifiLinkLayerStats(true); 8132 handleIpConfigurationLost(); 8133 transitionTo(mDisconnectingState); 8134 break; 8135 case CMD_IP_REACHABILITY_LOST: 8136 if (DBG && message.obj != null) log((String) message.obj); 8137 handleIpReachabilityLost(); 8138 transitionTo(mDisconnectingState); 8139 break; 8140 case CMD_DISCONNECT: 8141 mWifiNative.disconnect(); 8142 transitionTo(mDisconnectingState); 8143 break; 8144 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8145 if (message.arg1 == 1) { 8146 mWifiNative.disconnect(); 8147 mTemporarilyDisconnectWifi = true; 8148 transitionTo(mDisconnectingState); 8149 } 8150 break; 8151 case CMD_SET_OPERATIONAL_MODE: 8152 if (message.arg1 != CONNECT_MODE) { 8153 sendMessage(CMD_DISCONNECT); 8154 deferMessage(message); 8155 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8156 noteWifiDisabledWhileAssociated(); 8157 } 8158 } 8159 mWifiConfigStore. 8160 setAndEnableLastSelectedConfiguration( 8161 WifiConfiguration.INVALID_NETWORK_ID); 8162 break; 8163 case CMD_SET_COUNTRY_CODE: 8164 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8165 deferMessage(message); 8166 break; 8167 case CMD_START_SCAN: 8168 if (DBG) { 8169 logd("CMD_START_SCAN source " + message.arg1 8170 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8171 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8172 + " targetRoamBSSID=" + mTargetRoamBSSID 8173 + " RSSI=" + mWifiInfo.getRssi()); 8174 } 8175 if (message.arg1 == SCAN_ALARM_SOURCE) { 8176 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8177 // not be processed) and restart the scan if neede 8178 if (!getEnableAutoJoinWhenAssociated()) { 8179 return HANDLED; 8180 } 8181 boolean shouldScan = mScreenOn; 8182 8183 if (!checkAndRestartDelayedScan(message.arg2, 8184 shouldScan, 8185 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8186 null, null)) { 8187 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8188 logd("L2Connected CMD_START_SCAN source " 8189 + message.arg1 8190 + " " + message.arg2 + ", " + mDelayedScanCounter 8191 + " -> obsolete"); 8192 return HANDLED; 8193 } 8194 if (mP2pConnected.get()) { 8195 logd("L2Connected CMD_START_SCAN source " 8196 + message.arg1 8197 + " " + message.arg2 + ", " + mDelayedScanCounter 8198 + " ignore because P2P is connected"); 8199 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8200 return HANDLED; 8201 } 8202 boolean tryFullBandScan = false; 8203 boolean restrictChannelList = false; 8204 long now_ms = System.currentTimeMillis(); 8205 if (DBG) { 8206 logd("CMD_START_SCAN with age=" 8207 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8208 + " interval=" + fullBandConnectedTimeIntervalMilli 8209 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8210 } 8211 if (mWifiInfo != null) { 8212 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8213 (now_ms - lastFullBandConnectedTimeMilli) 8214 > fullBandConnectedTimeIntervalMilli) { 8215 if (DBG) { 8216 logd("CMD_START_SCAN try full band scan age=" 8217 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8218 + " interval=" + fullBandConnectedTimeIntervalMilli 8219 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8220 } 8221 tryFullBandScan = true; 8222 } 8223 8224 if (mWifiInfo.txSuccessRate > 8225 mWifiConfigStore.maxTxPacketForFullScans 8226 || mWifiInfo.rxSuccessRate > 8227 mWifiConfigStore.maxRxPacketForFullScans) { 8228 // Too much traffic at the interface, hence no full band scan 8229 if (DBG) { 8230 logd("CMD_START_SCAN " + 8231 "prevent full band scan due to pkt rate"); 8232 } 8233 tryFullBandScan = false; 8234 } 8235 8236 if (mWifiInfo.txSuccessRate > 8237 mWifiConfigStore.maxTxPacketForPartialScans 8238 || mWifiInfo.rxSuccessRate > 8239 mWifiConfigStore.maxRxPacketForPartialScans) { 8240 // Don't scan if lots of packets are being sent 8241 restrictChannelList = true; 8242 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8243 if (DBG) { 8244 logd("CMD_START_SCAN source " + message.arg1 8245 + " ...and ignore scans" 8246 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8247 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8248 } 8249 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8250 return HANDLED; 8251 } 8252 } 8253 } 8254 8255 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8256 if (DBG) { 8257 logd("CMD_START_SCAN full=" + 8258 tryFullBandScan); 8259 } 8260 if (currentConfiguration != null) { 8261 if (fullBandConnectedTimeIntervalMilli 8262 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8263 // Sanity 8264 fullBandConnectedTimeIntervalMilli 8265 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8266 } 8267 if (tryFullBandScan) { 8268 lastFullBandConnectedTimeMilli = now_ms; 8269 if (fullBandConnectedTimeIntervalMilli 8270 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8271 // Increase the interval 8272 fullBandConnectedTimeIntervalMilli 8273 = fullBandConnectedTimeIntervalMilli 8274 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8275 8276 if (DBG) { 8277 logd("CMD_START_SCAN bump interval =" 8278 + fullBandConnectedTimeIntervalMilli); 8279 } 8280 } 8281 handleScanRequest( 8282 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8283 } else { 8284 if (!startScanForConfiguration( 8285 currentConfiguration, restrictChannelList)) { 8286 if (DBG) { 8287 logd("starting scan, " + 8288 " did not find channels -> full"); 8289 } 8290 lastFullBandConnectedTimeMilli = now_ms; 8291 if (fullBandConnectedTimeIntervalMilli 8292 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8293 // Increase the interval 8294 fullBandConnectedTimeIntervalMilli 8295 = fullBandConnectedTimeIntervalMilli 8296 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8297 8298 if (DBG) { 8299 logd("CMD_START_SCAN bump interval =" 8300 + fullBandConnectedTimeIntervalMilli); 8301 } 8302 } 8303 handleScanRequest( 8304 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8305 } 8306 } 8307 8308 } else { 8309 logd("CMD_START_SCAN : connected mode and no configuration"); 8310 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8311 } 8312 } else { 8313 // Not scan alarm source 8314 return NOT_HANDLED; 8315 } 8316 break; 8317 /* Ignore connection to same network */ 8318 case WifiManager.CONNECT_NETWORK: 8319 int netId = message.arg1; 8320 if (mWifiInfo.getNetworkId() == netId) { 8321 break; 8322 } 8323 return NOT_HANDLED; 8324 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8325 mWifiInfo.setBSSID((String) message.obj); 8326 mLastNetworkId = message.arg1; 8327 mWifiInfo.setNetworkId(mLastNetworkId); 8328 if(!mLastBssid.equals((String) message.obj)) { 8329 mLastBssid = (String) message.obj; 8330 sendNetworkStateChangeBroadcast(mLastBssid); 8331 } 8332 break; 8333 case CMD_RSSI_POLL: 8334 if (message.arg1 == mRssiPollToken) { 8335 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8336 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8337 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8338 if (stats != null) { 8339 // Sanity check the results provided by driver 8340 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8341 && (stats.rssi_mgmt == 0 8342 || stats.beacon_rx == 0)) { 8343 stats = null; 8344 } 8345 } 8346 // Get Info and continue polling 8347 fetchRssiLinkSpeedAndFrequencyNative(); 8348 calculateWifiScore(stats); 8349 } 8350 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8351 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8352 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8353 } else { 8354 // Polling has completed 8355 } 8356 break; 8357 case CMD_ENABLE_RSSI_POLL: 8358 cleanWifiScore(); 8359 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8360 mEnableRssiPolling = (message.arg1 == 1); 8361 } else { 8362 mEnableRssiPolling = false; 8363 } 8364 mRssiPollToken++; 8365 if (mEnableRssiPolling) { 8366 // First poll 8367 fetchRssiLinkSpeedAndFrequencyNative(); 8368 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8369 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8370 } 8371 break; 8372 case WifiManager.RSSI_PKTCNT_FETCH: 8373 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8374 fetchRssiLinkSpeedAndFrequencyNative(); 8375 info.rssi = mWifiInfo.getRssi(); 8376 fetchPktcntNative(info); 8377 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8378 break; 8379 case CMD_DELAYED_NETWORK_DISCONNECT: 8380 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8381 8382 // Ignore if we are not debouncing 8383 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8384 + message.arg1); 8385 return HANDLED; 8386 } else { 8387 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8388 + message.arg1); 8389 8390 linkDebouncing = false; 8391 // If we are still debouncing while this message comes, 8392 // it means we were not able to reconnect within the alloted time 8393 // = LINK_FLAPPING_DEBOUNCE_MSEC 8394 // and thus, trigger a real disconnect 8395 handleNetworkDisconnect(); 8396 transitionTo(mDisconnectedState); 8397 } 8398 break; 8399 case CMD_ASSOCIATED_BSSID: 8400 if ((String) message.obj == null) { 8401 logw("Associated command w/o BSSID"); 8402 break; 8403 } 8404 mLastBssid = (String) message.obj; 8405 if (mLastBssid != null 8406 && (mWifiInfo.getBSSID() == null 8407 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8408 mWifiInfo.setBSSID((String) message.obj); 8409 sendNetworkStateChangeBroadcast(mLastBssid); 8410 } 8411 break; 8412 case CMD_START_RSSI_MONITORING_OFFLOAD: 8413 case CMD_RSSI_THRESHOLD_BREACH: 8414 byte currRssi = (byte) message.arg1; 8415 processRssiThreshold(currRssi, message.what); 8416 break; 8417 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8418 stopRssiMonitoringOffload(); 8419 break; 8420 case CMD_RESET_SIM_NETWORKS: 8421 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8422 WifiConfiguration config = 8423 mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 8424 if (mWifiConfigStore.isSimConfig(config)) { 8425 mWifiNative.disconnect(); 8426 transitionTo(mDisconnectingState); 8427 } 8428 } 8429 /* allow parent state to reset data for other networks */ 8430 return NOT_HANDLED; 8431 default: 8432 return NOT_HANDLED; 8433 } 8434 8435 return HANDLED; 8436 } 8437 } 8438 8439 class ObtainingIpState extends State { 8440 @Override 8441 public void enter() { 8442 if (DBG) { 8443 String key = ""; 8444 if (getCurrentWifiConfiguration() != null) { 8445 key = getCurrentWifiConfiguration().configKey(); 8446 } 8447 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8448 + " " + key + " " 8449 + " roam=" + mAutoRoaming 8450 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8451 + " watchdog= " + obtainingIpWatchdogCount); 8452 } 8453 8454 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8455 // We might still be roaming 8456 linkDebouncing = false; 8457 8458 // Send event to CM & network change broadcast 8459 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8460 8461 // We must clear the config BSSID, as the wifi chipset may decide to roam 8462 // from this point on and having the BSSID specified in the network block would 8463 // cause the roam to fail and the device to disconnect. 8464 clearCurrentConfigBSSID("ObtainingIpAddress"); 8465 8466 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8467 // We used to do DHCPv4 RENEWs on framework roams. 8468 // TODO: Investigate whether we should reinstitute this. 8469 // 8470 // When we get here after a roam, we will already have called 8471 // mIpManager.confirmConfiguration() to ensure we're on the 8472 // same network (in handling of SupplicantState.COMPLETED). 8473 if (!isRoaming()) { 8474 mIpManager.stop(); 8475 mIpManager.startProvisioning(); 8476 } 8477 obtainingIpWatchdogCount++; 8478 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8479 // Get Link layer stats so as we get fresh tx packet counters 8480 getWifiLinkLayerStats(true); 8481 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8482 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8483 } else { 8484 // Stop IpManager in case we're switching from static 8485 // configuration to DHCP. 8486 // 8487 // TODO: Only ever enter this state the first time we 8488 // connect to a network, never on changing from static 8489 // configuration to DHCP. When we transition from static 8490 // configuration to DHCP, we must tell ConnectivityService 8491 // that we're disconnected, because DHCP might take a long 8492 // time, during which connectivity APIs such as 8493 // getActiveNetworkInfo should not return CONNECTED. 8494 stopIpManager(); 8495 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8496 mLastNetworkId); 8497 if (config.ipAddress == null) { 8498 logd("Static IP lacks address"); 8499 sendMessage(CMD_IPV4_PROVISIONING_FAILURE); 8500 } else { 8501 mIpManager.startProvisioning(config); 8502 } 8503 } 8504 } 8505 8506 @Override 8507 public boolean processMessage(Message message) { 8508 logStateAndMessage(message, this); 8509 8510 switch(message.what) { 8511 case CMD_AUTO_CONNECT: 8512 case CMD_AUTO_ROAM: 8513 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8514 break; 8515 case WifiManager.SAVE_NETWORK: 8516 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8517 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8518 deferMessage(message); 8519 break; 8520 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8521 case CMD_SET_HIGH_PERF_MODE: 8522 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8523 deferMessage(message); 8524 break; 8525 /* Defer scan request since we should not switch to other channels at DHCP */ 8526 case CMD_START_SCAN: 8527 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8528 deferMessage(message); 8529 break; 8530 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8531 if (message.arg1 == obtainingIpWatchdogCount) { 8532 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8533 + obtainingIpWatchdogCount); 8534 handleIpConfigurationLost(); 8535 transitionTo(mDisconnectingState); 8536 break; 8537 } 8538 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8539 break; 8540 default: 8541 return NOT_HANDLED; 8542 } 8543 return HANDLED; 8544 } 8545 } 8546 8547 private void sendConnectedState() { 8548 // If this network was explicitly selected by the user, evaluate whether to call 8549 // explicitlySelected() so the system can treat it appropriately. 8550 WifiConfiguration config = getCurrentWifiConfiguration(); 8551 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8552 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8553 if (DBG) { 8554 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8555 } 8556 if (prompt) { 8557 // Selected by the user via Settings or QuickSettings. If this network has Internet 8558 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8559 // really want to switch, or has already confirmed and selected "Don't ask again". 8560 if (DBG) { 8561 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8562 } 8563 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8564 } 8565 } 8566 8567 setNetworkDetailedState(DetailedState.CONNECTED); 8568 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8569 sendNetworkStateChangeBroadcast(mLastBssid); 8570 } 8571 8572 class RoamingState extends State { 8573 boolean mAssociated; 8574 @Override 8575 public void enter() { 8576 if (DBG) { 8577 log("RoamingState Enter" 8578 + " mScreenOn=" + mScreenOn ); 8579 } 8580 setScanAlarm(false); 8581 8582 // Make sure we disconnect if roaming fails 8583 roamWatchdogCount++; 8584 logd("Start Roam Watchdog " + roamWatchdogCount); 8585 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8586 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8587 mAssociated = false; 8588 } 8589 @Override 8590 public boolean processMessage(Message message) { 8591 logStateAndMessage(message, this); 8592 WifiConfiguration config; 8593 switch (message.what) { 8594 case CMD_IP_CONFIGURATION_LOST: 8595 config = getCurrentWifiConfiguration(); 8596 if (config != null) { 8597 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8598 mWifiConfigStore.noteRoamingFailure(config, 8599 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8600 } 8601 return NOT_HANDLED; 8602 case CMD_UNWANTED_NETWORK: 8603 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8604 return HANDLED; 8605 case CMD_SET_OPERATIONAL_MODE: 8606 if (message.arg1 != CONNECT_MODE) { 8607 deferMessage(message); 8608 } 8609 break; 8610 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8611 /** 8612 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8613 * before NETWORK_DISCONNECTION_EVENT 8614 * And there is an associated BSSID corresponding to our target BSSID, then 8615 * we have missed the network disconnection, transition to mDisconnectedState 8616 * and handle the rest of the events there. 8617 */ 8618 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8619 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8620 || stateChangeResult.state == SupplicantState.INACTIVE 8621 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8622 if (DBG) { 8623 log("STATE_CHANGE_EVENT in roaming state " 8624 + stateChangeResult.toString() ); 8625 } 8626 if (stateChangeResult.BSSID != null 8627 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8628 handleNetworkDisconnect(); 8629 transitionTo(mDisconnectedState); 8630 } 8631 } 8632 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8633 // We completed the layer2 roaming part 8634 mAssociated = true; 8635 if (stateChangeResult.BSSID != null) { 8636 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8637 } 8638 } 8639 break; 8640 case CMD_ROAM_WATCHDOG_TIMER: 8641 if (roamWatchdogCount == message.arg1) { 8642 if (DBG) log("roaming watchdog! -> disconnect"); 8643 mRoamFailCount++; 8644 handleNetworkDisconnect(); 8645 mWifiNative.disconnect(); 8646 transitionTo(mDisconnectedState); 8647 } 8648 break; 8649 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8650 if (mAssociated) { 8651 if (DBG) log("roaming and Network connection established"); 8652 mLastNetworkId = message.arg1; 8653 mLastBssid = (String) message.obj; 8654 mWifiInfo.setBSSID(mLastBssid); 8655 mWifiInfo.setNetworkId(mLastNetworkId); 8656 mWifiQualifiedNetworkSelector.enableBssidForQualitynetworkSelection( 8657 mLastBssid, true); 8658 sendNetworkStateChangeBroadcast(mLastBssid); 8659 transitionTo(mObtainingIpState); 8660 } else { 8661 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8662 } 8663 break; 8664 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8665 // Throw away but only if it corresponds to the network we're roaming to 8666 String bssid = (String) message.obj; 8667 if (true) { 8668 String target = ""; 8669 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8670 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8671 + " BSSID=" + bssid 8672 + " target=" + target); 8673 } 8674 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8675 handleNetworkDisconnect(); 8676 transitionTo(mDisconnectedState); 8677 } 8678 break; 8679 case WifiMonitor.SSID_TEMP_DISABLED: 8680 // Auth error while roaming 8681 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8682 + " id=" + Integer.toString(message.arg1) 8683 + " isRoaming=" + isRoaming() 8684 + " roam=" + mAutoRoaming); 8685 if (message.arg1 == mLastNetworkId) { 8686 config = getCurrentWifiConfiguration(); 8687 if (config != null) { 8688 mWifiLogger.captureBugReportData( 8689 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8690 mWifiConfigStore.noteRoamingFailure(config, 8691 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8692 } 8693 handleNetworkDisconnect(); 8694 transitionTo(mDisconnectingState); 8695 } 8696 return NOT_HANDLED; 8697 case CMD_START_SCAN: 8698 deferMessage(message); 8699 break; 8700 default: 8701 return NOT_HANDLED; 8702 } 8703 return HANDLED; 8704 } 8705 8706 @Override 8707 public void exit() { 8708 logd("WifiStateMachine: Leaving Roaming state"); 8709 } 8710 } 8711 8712 class ConnectedState extends State { 8713 @Override 8714 public void enter() { 8715 String address; 8716 updateDefaultRouteMacAddress(1000); 8717 if (DBG) { 8718 log("Enter ConnectedState " 8719 + " mScreenOn=" + mScreenOn 8720 + " scanperiod=" 8721 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8722 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8723 + mWifiConfigStore.enableHalBasedPno.get() 8724 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8725 } 8726 if (mScreenOn 8727 && getEnableAutoJoinWhenAssociated()) { 8728 if (useHalBasedAutoJoinOffload()) { 8729 startGScanConnectedModeOffload("connectedEnter"); 8730 } else { 8731 // restart scan alarm 8732 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8733 null, null); 8734 } 8735 } 8736 registerConnected(); 8737 lastConnectAttemptTimestamp = 0; 8738 targetWificonfiguration = null; 8739 // Paranoia 8740 linkDebouncing = false; 8741 8742 // Not roaming anymore 8743 mAutoRoaming = false; 8744 8745 if (testNetworkDisconnect) { 8746 testNetworkDisconnectCounter++; 8747 logd("ConnectedState Enter start disconnect test " + 8748 testNetworkDisconnectCounter); 8749 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8750 testNetworkDisconnectCounter, 0), 15000); 8751 } 8752 8753 // Reenable all networks, allow for hidden networks to be scanned 8754 mWifiConfigStore.enableAllNetworks(); 8755 8756 mLastDriverRoamAttempt = 0; 8757 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 8758 //startLazyRoam(); 8759 } 8760 @Override 8761 public boolean processMessage(Message message) { 8762 WifiConfiguration config = null; 8763 logStateAndMessage(message, this); 8764 8765 switch (message.what) { 8766 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8767 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8768 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8769 return HANDLED; 8770 } 8771 /* If we are still in Disconnected state after having discovered a valid 8772 * network this means autojoin didnt managed to associate to the network, 8773 * then restart PNO so as we will try associating to it again. 8774 */ 8775 if (useHalBasedAutoJoinOffload()) { 8776 if (mGScanStartTimeMilli == 0) { 8777 // If offload is not started, then start it... 8778 startGScanConnectedModeOffload("connectedRestart"); 8779 } else { 8780 // If offload is already started, then check if we need to increase 8781 // the scan period and restart the Gscan 8782 long now = System.currentTimeMillis(); 8783 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8784 && ((now - mGScanStartTimeMilli) 8785 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8786 && (mGScanPeriodMilli 8787 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8788 { 8789 startConnectedGScan("Connected restart gscan"); 8790 } 8791 } 8792 } 8793 break; 8794 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8795 updateAssociatedScanPermission(); 8796 break; 8797 case CMD_UNWANTED_NETWORK: 8798 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8799 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8800 mWifiNative.disconnect(); 8801 transitionTo(mDisconnectingState); 8802 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8803 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8804 Log.d(TAG, (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN 8805 ? "NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN" 8806 : "NETWORK_STATUS_UNWANTED_VALIDATION_FAILED")); 8807 config = getCurrentWifiConfiguration(); 8808 if (config != null) { 8809 // Disable autojoin 8810 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8811 config.validatedInternetAccess = false; 8812 // Clear last-selected status, as being last-selected also avoids 8813 // disabling auto-join. 8814 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8815 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 8816 WifiConfiguration.INVALID_NETWORK_ID); 8817 } 8818 mWifiConfigStore.updateNetworkSelectionStatus(config, 8819 WifiConfiguration.NetworkSelectionStatus 8820 .DISABLED_NO_INTERNET); 8821 } 8822 config.numNoInternetAccessReports += 1; 8823 mWifiConfigStore.writeKnownNetworkHistory(); 8824 } 8825 } 8826 return HANDLED; 8827 case CMD_NETWORK_STATUS: 8828 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8829 config = getCurrentWifiConfiguration(); 8830 if (config != null) { 8831 // re-enable autojoin 8832 config.numNoInternetAccessReports = 0; 8833 config.validatedInternetAccess = true; 8834 mWifiConfigStore.writeKnownNetworkHistory(); 8835 } 8836 } 8837 return HANDLED; 8838 case CMD_ACCEPT_UNVALIDATED: 8839 boolean accept = (message.arg1 != 0); 8840 config = getCurrentWifiConfiguration(); 8841 if (config != null) { 8842 config.noInternetAccessExpected = accept; 8843 } 8844 return HANDLED; 8845 case CMD_TEST_NETWORK_DISCONNECT: 8846 // Force a disconnect 8847 if (message.arg1 == testNetworkDisconnectCounter) { 8848 mWifiNative.disconnect(); 8849 } 8850 break; 8851 case CMD_ASSOCIATED_BSSID: 8852 // ASSOCIATING to a new BSSID while already connected, indicates 8853 // that driver is roaming 8854 mLastDriverRoamAttempt = System.currentTimeMillis(); 8855 String toBSSID = (String)message.obj; 8856 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8857 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8858 } 8859 return NOT_HANDLED; 8860 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8861 long lastRoam = 0; 8862 if (mLastDriverRoamAttempt != 0) { 8863 // Calculate time since last driver roam attempt 8864 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8865 mLastDriverRoamAttempt = 0; 8866 } 8867 if (unexpectedDisconnectedReason(message.arg2)) { 8868 mWifiLogger.captureBugReportData( 8869 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8870 } 8871 config = getCurrentWifiConfiguration(); 8872 if (mScreenOn 8873 && !linkDebouncing 8874 && config != null 8875 && config.getNetworkSelectionStatus().isNetworkEnabled() 8876 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8877 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8878 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8879 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8880 && mWifiInfo.getRssi() > 8881 WifiQualifiedNetworkSelector.QUALIFIED_RSSI_24G_BAND) 8882 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8883 && mWifiInfo.getRssi() > 8884 mWifiConfigStore.thresholdQualifiedRssi5.get()))) { 8885 // Start de-bouncing the L2 disconnection: 8886 // this L2 disconnection might be spurious. 8887 // Hence we allow 7 seconds for the state machine to try 8888 // to reconnect, go thru the 8889 // roaming cycle and enter Obtaining IP address 8890 // before signalling the disconnect to ConnectivityService and L3 8891 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8892 linkDebouncing = true; 8893 8894 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8895 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8896 if (DBG) { 8897 log("NETWORK_DISCONNECTION_EVENT in connected state" 8898 + " BSSID=" + mWifiInfo.getBSSID() 8899 + " RSSI=" + mWifiInfo.getRssi() 8900 + " freq=" + mWifiInfo.getFrequency() 8901 + " reason=" + message.arg2 8902 + " -> debounce"); 8903 } 8904 return HANDLED; 8905 } else { 8906 if (DBG) { 8907 log("NETWORK_DISCONNECTION_EVENT in connected state" 8908 + " BSSID=" + mWifiInfo.getBSSID() 8909 + " RSSI=" + mWifiInfo.getRssi() 8910 + " freq=" + mWifiInfo.getFrequency() 8911 + " was debouncing=" + linkDebouncing 8912 + " reason=" + message.arg2 8913 + " Network Selection Status=" + (config == null ? "Unavailable" 8914 : config.getNetworkSelectionStatus().getNetworkStatusString())); 8915 } 8916 } 8917 break; 8918 case CMD_AUTO_ROAM: 8919 // Clear the driver roam indication since we are attempting a framework roam 8920 mLastDriverRoamAttempt = 0; 8921 8922 /* Connect command coming from auto-join */ 8923 ScanResult candidate = (ScanResult)message.obj; 8924 String bssid = "any"; 8925 if (candidate != null) { 8926 bssid = candidate.BSSID; 8927 } 8928 int netId = mLastNetworkId; 8929 config = getCurrentWifiConfiguration(); 8930 8931 8932 if (config == null) { 8933 loge("AUTO_ROAM and no config, bail out..."); 8934 break; 8935 } 8936 8937 logd("CMD_AUTO_ROAM sup state " 8938 + mSupplicantStateTracker.getSupplicantStateName() 8939 + " my state " + getCurrentState().getName() 8940 + " nid=" + Integer.toString(netId) 8941 + " config " + config.configKey() 8942 + " roam=" + Integer.toString(message.arg2) 8943 + " to " + bssid 8944 + " targetRoamBSSID " + mTargetRoamBSSID); 8945 8946 setTargetBssid(config, bssid); 8947 mTargetNetworkId = netId; 8948 // Make sure the network is enabled, since supplicant will not re-enable it 8949 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8950 8951 if (deferForUserInput(message, netId, false)) { 8952 break; 8953 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8954 WifiConfiguration.USER_BANNED) { 8955 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8956 WifiManager.NOT_AUTHORIZED); 8957 break; 8958 } 8959 8960 boolean ret = false; 8961 if (mLastNetworkId != netId) { 8962 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8963 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8964 ret = true; 8965 } 8966 } else { 8967 ret = mWifiNative.reassociate(); 8968 } 8969 if (ret) { 8970 lastConnectAttemptTimestamp = System.currentTimeMillis(); 8971 mWifiMetrics.startConnectionEvent(mWifiInfo); 8972 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8973 8974 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8975 mAutoRoaming = true; 8976 transitionTo(mRoamingState); 8977 8978 } else { 8979 loge("Failed to connect config: " + config + " netId: " + netId); 8980 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8981 WifiManager.ERROR); 8982 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8983 break; 8984 } 8985 break; 8986 case CMD_START_IP_PACKET_OFFLOAD: { 8987 int slot = message.arg1; 8988 int intervalSeconds = message.arg2; 8989 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 8990 byte[] dstMac; 8991 try { 8992 InetAddress gateway = RouteInfo.selectBestRoute( 8993 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 8994 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 8995 dstMac = macAddressFromString(dstMacStr); 8996 } catch (NullPointerException|IllegalArgumentException e) { 8997 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 8998 mNetworkAgent.onPacketKeepaliveEvent(slot, 8999 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9000 break; 9001 } 9002 pkt.dstMac = dstMac; 9003 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9004 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9005 break; 9006 } 9007 default: 9008 return NOT_HANDLED; 9009 } 9010 return HANDLED; 9011 } 9012 9013 @Override 9014 public void exit() { 9015 logd("WifiStateMachine: Leaving Connected state"); 9016 setScanAlarm(false); 9017 mLastDriverRoamAttempt = 0; 9018 9019 stopLazyRoam(); 9020 9021 mWhiteListedSsids = null; 9022 } 9023 } 9024 9025 class DisconnectingState extends State { 9026 9027 @Override 9028 public void enter() { 9029 9030 if (PDBG) { 9031 logd(" Enter DisconnectingState State scan interval " 9032 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9033 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9034 + " screenOn=" + mScreenOn); 9035 } 9036 9037 // Make sure we disconnect: we enter this state prior to connecting to a new 9038 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9039 // event which in this case will be indicating that supplicant started to associate. 9040 // In some cases supplicant doesn't ignore the connect requests (it might not 9041 // find the target SSID in its cache), 9042 // Therefore we end up stuck that state, hence the need for the watchdog. 9043 disconnectingWatchdogCount++; 9044 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9045 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9046 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9047 } 9048 9049 @Override 9050 public boolean processMessage(Message message) { 9051 logStateAndMessage(message, this); 9052 switch (message.what) { 9053 case CMD_SET_OPERATIONAL_MODE: 9054 if (message.arg1 != CONNECT_MODE) { 9055 deferMessage(message); 9056 } 9057 break; 9058 case CMD_START_SCAN: 9059 deferMessage(message); 9060 return HANDLED; 9061 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9062 if (disconnectingWatchdogCount == message.arg1) { 9063 if (DBG) log("disconnecting watchdog! -> disconnect"); 9064 handleNetworkDisconnect(); 9065 transitionTo(mDisconnectedState); 9066 } 9067 break; 9068 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9069 /** 9070 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9071 * we have missed the network disconnection, transition to mDisconnectedState 9072 * and handle the rest of the events there 9073 */ 9074 deferMessage(message); 9075 handleNetworkDisconnect(); 9076 transitionTo(mDisconnectedState); 9077 break; 9078 default: 9079 return NOT_HANDLED; 9080 } 9081 return HANDLED; 9082 } 9083 } 9084 9085 class DisconnectedState extends State { 9086 @Override 9087 public void enter() { 9088 // We dont scan frequently if this is a temporary disconnect 9089 // due to p2p 9090 if (mTemporarilyDisconnectWifi) { 9091 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9092 return; 9093 } 9094 9095 if (PDBG) { 9096 logd(" Enter DisconnectedState scan interval " 9097 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9098 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9099 + " screenOn=" + mScreenOn 9100 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9101 + mWifiConfigStore.enableHalBasedPno.get()); 9102 } 9103 9104 /** clear the roaming state, if we were roaming, we failed */ 9105 mAutoRoaming = false; 9106 9107 if (useHalBasedAutoJoinOffload()) { 9108 startGScanDisconnectedModeOffload("disconnectedEnter"); 9109 } else { 9110 if (mScreenOn) { 9111 /** 9112 * screen lit and => start scan immediately 9113 */ 9114 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9115 } else { 9116 /** 9117 * screen dark and PNO supported => scan alarm disabled 9118 */ 9119 if (mBackgroundScanSupported) { 9120 /* If a regular scan result is pending, do not initiate background 9121 * scan until the scan results are returned. This is needed because 9122 * initiating a background scan will cancel the regular scan and 9123 * scan results will not be returned until background scanning is 9124 * cleared 9125 */ 9126 if (!mIsScanOngoing) { 9127 enableBackgroundScan(true); 9128 } 9129 } else { 9130 setScanAlarm(true); 9131 } 9132 } 9133 } 9134 9135 /** 9136 * If we have no networks saved, the supplicant stops doing the periodic scan. 9137 * The scans are useful to notify the user of the presence of an open network. 9138 * Note that these are not wake up scans. 9139 */ 9140 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9141 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9142 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9143 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9144 } 9145 9146 mDisconnectedTimeStamp = System.currentTimeMillis(); 9147 mDisconnectedPnoAlarmCount = 0; 9148 } 9149 @Override 9150 public boolean processMessage(Message message) { 9151 boolean ret = HANDLED; 9152 9153 logStateAndMessage(message, this); 9154 9155 switch (message.what) { 9156 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9157 if (mP2pConnected.get()) break; 9158 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9159 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9160 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9161 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9162 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9163 } 9164 break; 9165 case WifiManager.FORGET_NETWORK: 9166 case CMD_REMOVE_NETWORK: 9167 case CMD_REMOVE_APP_CONFIGURATIONS: 9168 case CMD_REMOVE_USER_CONFIGURATIONS: 9169 // Set up a delayed message here. After the forget/remove is handled 9170 // the handled delayed message will determine if there is a need to 9171 // scan and continue 9172 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9173 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9174 ret = NOT_HANDLED; 9175 break; 9176 case CMD_SET_OPERATIONAL_MODE: 9177 if (message.arg1 != CONNECT_MODE) { 9178 mOperationalMode = message.arg1; 9179 9180 mWifiConfigStore.disableAllNetworks(); 9181 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9182 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9183 setWifiState(WIFI_STATE_DISABLED); 9184 } 9185 transitionTo(mScanModeState); 9186 } 9187 mWifiConfigStore. 9188 setAndEnableLastSelectedConfiguration( 9189 WifiConfiguration.INVALID_NETWORK_ID); 9190 break; 9191 /* Ignore network disconnect */ 9192 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9193 // Interpret this as an L2 connection failure 9194 // End current connection event and log L2 reason code. 9195 mWifiMetrics.endConnectionEvent(message.arg2, 9196 WifiMetricsProto.ConnectionEvent.HLF_UNKNOWN); 9197 break; 9198 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9199 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9200 if (DBG) { 9201 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9202 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9203 + " debouncing=" + linkDebouncing); 9204 } 9205 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9206 /* ConnectModeState does the rest of the handling */ 9207 ret = NOT_HANDLED; 9208 break; 9209 case CMD_START_SCAN: 9210 if (!checkOrDeferScanAllowed(message)) { 9211 // The scan request was rescheduled 9212 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9213 return HANDLED; 9214 } 9215 if (message.arg1 == SCAN_ALARM_SOURCE) { 9216 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9217 // not be processed) and restart the scan 9218 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9219 if (mP2pConnected.get()) { 9220 period = (int) mFacade.getLongSetting(mContext, 9221 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9222 period); 9223 } 9224 if (!checkAndRestartDelayedScan(message.arg2, 9225 true, period, null, null)) { 9226 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9227 logd("Disconnected CMD_START_SCAN source " 9228 + message.arg1 9229 + " " + message.arg2 + ", " + mDelayedScanCounter 9230 + " -> obsolete"); 9231 return HANDLED; 9232 } 9233 /* Disable background scan temporarily during a regular scan */ 9234 enableBackgroundScan(false); 9235 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9236 ret = HANDLED; 9237 } else { 9238 9239 /* 9240 * The SCAN request is not handled in this state and 9241 * would eventually might/will get handled in the 9242 * parent's state. The PNO, if already enabled had to 9243 * get disabled before the SCAN trigger. Hence, stop 9244 * the PNO if already enabled in this state, though the 9245 * SCAN request is not handled(PNO disable before the 9246 * SCAN trigger in any other state is not the right 9247 * place to issue). 9248 */ 9249 9250 enableBackgroundScan(false); 9251 ret = NOT_HANDLED; 9252 } 9253 break; 9254 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9255 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9256 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9257 return HANDLED; 9258 } 9259 /* If we are still in Disconnected state after having discovered a valid 9260 * network this means autojoin didnt managed to associate to the network, 9261 * then restart PNO so as we will try associating to it again. 9262 */ 9263 if (useHalBasedAutoJoinOffload()) { 9264 if (mGScanStartTimeMilli == 0) { 9265 // If offload is not started, then start it... 9266 startGScanDisconnectedModeOffload("disconnectedRestart"); 9267 } else { 9268 // If offload is already started, then check if we need to increase 9269 // the scan period and restart the Gscan 9270 long now = System.currentTimeMillis(); 9271 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9272 && ((now - mGScanStartTimeMilli) 9273 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9274 && (mGScanPeriodMilli 9275 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9276 { 9277 startDisconnectedGScan("disconnected restart gscan"); 9278 } 9279 } 9280 } else { 9281 // If we are still disconnected for a short while after having found a 9282 // network thru PNO, then something went wrong, and for some reason we 9283 // couldn't join this network. 9284 // It might be due to a SW bug in supplicant or the wifi stack, or an 9285 // interoperability issue, or we try to join a bad bss and failed 9286 // In that case we want to restart pno so as to make sure that we will 9287 // attempt again to join that network. 9288 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9289 enableBackgroundScan(false); 9290 enableBackgroundScan(true); 9291 } 9292 return HANDLED; 9293 } 9294 break; 9295 case WifiMonitor.SCAN_RESULTS_EVENT: 9296 case WifiMonitor.SCAN_FAILED_EVENT: 9297 /* Re-enable background scan when a pending scan result is received */ 9298 if (!mScreenOn && mIsScanOngoing 9299 && mBackgroundScanSupported 9300 && !useHalBasedAutoJoinOffload()) { 9301 enableBackgroundScan(true); 9302 } else if (!mScreenOn 9303 && !mIsScanOngoing 9304 && mBackgroundScanSupported 9305 && !useHalBasedAutoJoinOffload()) { 9306 // We receive scan results from legacy PNO, hence restart the PNO alarm 9307 int delay; 9308 if (mDisconnectedPnoAlarmCount < 1) { 9309 delay = 30 * 1000; 9310 } else if (mDisconnectedPnoAlarmCount < 3) { 9311 delay = 60 * 1000; 9312 } else { 9313 delay = 360 * 1000; 9314 } 9315 mDisconnectedPnoAlarmCount++; 9316 if (VDBG) { 9317 logd("Starting PNO alarm " + delay); 9318 } 9319 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9320 System.currentTimeMillis() + delay, 9321 mPnoIntent); 9322 } 9323 /* Handled in parent state */ 9324 ret = NOT_HANDLED; 9325 break; 9326 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9327 NetworkInfo info = (NetworkInfo) message.obj; 9328 mP2pConnected.set(info.isConnected()); 9329 if (mP2pConnected.get()) { 9330 int defaultInterval = mContext.getResources().getInteger( 9331 R.integer.config_wifi_scan_interval_p2p_connected); 9332 long scanIntervalMs = mFacade.getLongSetting(mContext, 9333 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9334 defaultInterval); 9335 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9336 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9337 if (DBG) log("Turn on scanning after p2p disconnected"); 9338 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9339 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9340 } else { 9341 // If P2P is not connected and there are saved networks, then restart 9342 // scanning at the normal period. This is necessary because scanning might 9343 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9344 // was set to zero. 9345 if (useHalBasedAutoJoinOffload()) { 9346 startGScanDisconnectedModeOffload("p2pRestart"); 9347 } else { 9348 startDelayedScan( 9349 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9350 null, null); 9351 } 9352 } 9353 break; 9354 case CMD_RECONNECT: 9355 case CMD_REASSOCIATE: 9356 if (mTemporarilyDisconnectWifi) { 9357 // Drop a third party reconnect/reassociate if STA is 9358 // temporarily disconnected for p2p 9359 break; 9360 } else { 9361 // ConnectModeState handles it 9362 ret = NOT_HANDLED; 9363 } 9364 break; 9365 case CMD_SCREEN_STATE_CHANGED: 9366 handleScreenStateChanged(message.arg1 != 0); 9367 break; 9368 default: 9369 ret = NOT_HANDLED; 9370 } 9371 return ret; 9372 } 9373 9374 @Override 9375 public void exit() { 9376 mDisconnectedPnoAlarmCount = 0; 9377 /* No need for a background scan upon exit from a disconnected state */ 9378 enableBackgroundScan(false); 9379 setScanAlarm(false); 9380 mAlarmManager.cancel(mPnoIntent); 9381 } 9382 } 9383 9384 class WpsRunningState extends State { 9385 // Tracks the source to provide a reply 9386 private Message mSourceMessage; 9387 @Override 9388 public void enter() { 9389 mSourceMessage = Message.obtain(getCurrentMessage()); 9390 } 9391 @Override 9392 public boolean processMessage(Message message) { 9393 logStateAndMessage(message, this); 9394 9395 switch (message.what) { 9396 case WifiMonitor.WPS_SUCCESS_EVENT: 9397 // Ignore intermediate success, wait for full connection 9398 break; 9399 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9400 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9401 mSourceMessage.recycle(); 9402 mSourceMessage = null; 9403 deferMessage(message); 9404 transitionTo(mDisconnectedState); 9405 break; 9406 case WifiMonitor.WPS_OVERLAP_EVENT: 9407 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9408 WifiManager.WPS_OVERLAP_ERROR); 9409 mSourceMessage.recycle(); 9410 mSourceMessage = null; 9411 transitionTo(mDisconnectedState); 9412 break; 9413 case WifiMonitor.WPS_FAIL_EVENT: 9414 // Arg1 has the reason for the failure 9415 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9416 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9417 mSourceMessage.recycle(); 9418 mSourceMessage = null; 9419 transitionTo(mDisconnectedState); 9420 mWifiMetrics.endConnectionEvent( 9421 message.arg1, WifiMetricsProto.ConnectionEvent.HLF_UNKNOWN); 9422 } else { 9423 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9424 } 9425 break; 9426 case WifiMonitor.WPS_TIMEOUT_EVENT: 9427 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9428 WifiManager.WPS_TIMED_OUT); 9429 mSourceMessage.recycle(); 9430 mSourceMessage = null; 9431 transitionTo(mDisconnectedState); 9432 break; 9433 case WifiManager.START_WPS: 9434 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9435 break; 9436 case WifiManager.CANCEL_WPS: 9437 if (mWifiNative.cancelWps()) { 9438 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9439 } else { 9440 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9441 } 9442 transitionTo(mDisconnectedState); 9443 break; 9444 /** 9445 * Defer all commands that can cause connections to a different network 9446 * or put the state machine out of connect mode 9447 */ 9448 case CMD_STOP_DRIVER: 9449 case CMD_SET_OPERATIONAL_MODE: 9450 case WifiManager.CONNECT_NETWORK: 9451 case CMD_ENABLE_NETWORK: 9452 case CMD_RECONNECT: 9453 case CMD_REASSOCIATE: 9454 case CMD_ENABLE_ALL_NETWORKS: 9455 deferMessage(message); 9456 break; 9457 case CMD_AUTO_CONNECT: 9458 case CMD_AUTO_ROAM: 9459 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9460 return HANDLED; 9461 case CMD_START_SCAN: 9462 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9463 return HANDLED; 9464 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9465 if (DBG) log("Network connection lost"); 9466 handleNetworkDisconnect(); 9467 break; 9468 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9469 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9470 break; 9471 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9472 // Disregard auth failure events during WPS connection. The 9473 // EAP sequence is retried several times, and there might be 9474 // failures (especially for wps pin). We will get a WPS_XXX 9475 // event at the end of the sequence anyway. 9476 if (DBG) log("Ignore auth failure during WPS connection"); 9477 break; 9478 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9479 // Throw away supplicant state changes when WPS is running. 9480 // We will start getting supplicant state changes once we get 9481 // a WPS success or failure 9482 break; 9483 default: 9484 return NOT_HANDLED; 9485 } 9486 return HANDLED; 9487 } 9488 9489 @Override 9490 public void exit() { 9491 mWifiConfigStore.enableAllNetworks(); 9492 mWifiConfigStore.loadConfiguredNetworks(); 9493 } 9494 } 9495 9496 class SoftApStartingState extends State { 9497 @Override 9498 public void enter() { 9499 final Message message = getCurrentMessage(); 9500 if (message.what == CMD_START_AP) { 9501 WifiConfiguration config = (WifiConfiguration) message.obj; 9502 9503 if (config == null) { 9504 /** 9505 * Configuration not provided in the command, fallback to use the current 9506 * configuration. 9507 */ 9508 config = mWifiApConfigStore.getApConfiguration(); 9509 } else { 9510 /* Update AP configuration. */ 9511 mWifiApConfigStore.setApConfiguration(config); 9512 } 9513 startSoftApWithConfig(config); 9514 } else { 9515 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9516 } 9517 } 9518 @Override 9519 public boolean processMessage(Message message) { 9520 logStateAndMessage(message, this); 9521 9522 switch(message.what) { 9523 case CMD_START_SUPPLICANT: 9524 case CMD_STOP_SUPPLICANT: 9525 case CMD_START_AP: 9526 case CMD_STOP_AP: 9527 case CMD_START_DRIVER: 9528 case CMD_STOP_DRIVER: 9529 case CMD_SET_OPERATIONAL_MODE: 9530 case CMD_SET_COUNTRY_CODE: 9531 case CMD_SET_FREQUENCY_BAND: 9532 case CMD_START_PACKET_FILTERING: 9533 case CMD_STOP_PACKET_FILTERING: 9534 case CMD_TETHER_STATE_CHANGE: 9535 deferMessage(message); 9536 break; 9537 case CMD_START_AP_SUCCESS: 9538 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9539 transitionTo(mSoftApStartedState); 9540 break; 9541 case CMD_START_AP_FAILURE: 9542 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9543 transitionTo(mInitialState); 9544 break; 9545 default: 9546 return NOT_HANDLED; 9547 } 9548 return HANDLED; 9549 } 9550 } 9551 9552 class SoftApStartedState extends State { 9553 @Override 9554 public boolean processMessage(Message message) { 9555 logStateAndMessage(message, this); 9556 9557 switch(message.what) { 9558 case CMD_STOP_AP: 9559 if (DBG) log("Stopping Soft AP"); 9560 /* We have not tethered at this point, so we just shutdown soft Ap */ 9561 try { 9562 mNwService.stopAccessPoint(mInterfaceName); 9563 } catch(Exception e) { 9564 loge("Exception in stopAccessPoint()"); 9565 } 9566 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9567 transitionTo(mInitialState); 9568 break; 9569 case CMD_START_AP: 9570 // Ignore a start on a running access point 9571 break; 9572 // Fail client mode operation when soft AP is enabled 9573 case CMD_START_SUPPLICANT: 9574 loge("Cannot start supplicant with a running soft AP"); 9575 setWifiState(WIFI_STATE_UNKNOWN); 9576 break; 9577 case CMD_TETHER_STATE_CHANGE: 9578 TetherStateChange stateChange = (TetherStateChange) message.obj; 9579 if (startTethering(stateChange.available)) { 9580 transitionTo(mTetheringState); 9581 } 9582 break; 9583 default: 9584 return NOT_HANDLED; 9585 } 9586 return HANDLED; 9587 } 9588 } 9589 9590 class TetheringState extends State { 9591 @Override 9592 public void enter() { 9593 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9594 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9595 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9596 } 9597 @Override 9598 public boolean processMessage(Message message) { 9599 logStateAndMessage(message, this); 9600 9601 switch(message.what) { 9602 case CMD_TETHER_STATE_CHANGE: 9603 TetherStateChange stateChange = (TetherStateChange) message.obj; 9604 if (isWifiTethered(stateChange.active)) { 9605 transitionTo(mTetheredState); 9606 } 9607 return HANDLED; 9608 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9609 if (message.arg1 == mTetherToken) { 9610 loge("Failed to get tether update, shutdown soft access point"); 9611 transitionTo(mSoftApStartedState); 9612 // Needs to be first thing handled 9613 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9614 } 9615 break; 9616 case CMD_START_SUPPLICANT: 9617 case CMD_STOP_SUPPLICANT: 9618 case CMD_START_AP: 9619 case CMD_STOP_AP: 9620 case CMD_START_DRIVER: 9621 case CMD_STOP_DRIVER: 9622 case CMD_SET_OPERATIONAL_MODE: 9623 case CMD_SET_COUNTRY_CODE: 9624 case CMD_SET_FREQUENCY_BAND: 9625 case CMD_START_PACKET_FILTERING: 9626 case CMD_STOP_PACKET_FILTERING: 9627 deferMessage(message); 9628 break; 9629 default: 9630 return NOT_HANDLED; 9631 } 9632 return HANDLED; 9633 } 9634 } 9635 9636 class TetheredState extends State { 9637 @Override 9638 public boolean processMessage(Message message) { 9639 logStateAndMessage(message, this); 9640 9641 switch(message.what) { 9642 case CMD_TETHER_STATE_CHANGE: 9643 TetherStateChange stateChange = (TetherStateChange) message.obj; 9644 if (!isWifiTethered(stateChange.active)) { 9645 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9646 setHostApRunning(null, false); 9647 setHostApRunning(null, true); 9648 } 9649 return HANDLED; 9650 case CMD_STOP_AP: 9651 if (DBG) log("Untethering before stopping AP"); 9652 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9653 stopTethering(); 9654 transitionTo(mUntetheringState); 9655 // More work to do after untethering 9656 deferMessage(message); 9657 break; 9658 default: 9659 return NOT_HANDLED; 9660 } 9661 return HANDLED; 9662 } 9663 } 9664 9665 class UntetheringState extends State { 9666 @Override 9667 public void enter() { 9668 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9669 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9670 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9671 9672 } 9673 @Override 9674 public boolean processMessage(Message message) { 9675 logStateAndMessage(message, this); 9676 9677 switch(message.what) { 9678 case CMD_TETHER_STATE_CHANGE: 9679 TetherStateChange stateChange = (TetherStateChange) message.obj; 9680 9681 /* Wait till wifi is untethered */ 9682 if (isWifiTethered(stateChange.active)) break; 9683 9684 transitionTo(mSoftApStartedState); 9685 break; 9686 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9687 if (message.arg1 == mTetherToken) { 9688 loge("Failed to get tether update, force stop access point"); 9689 transitionTo(mSoftApStartedState); 9690 } 9691 break; 9692 case CMD_START_SUPPLICANT: 9693 case CMD_STOP_SUPPLICANT: 9694 case CMD_START_AP: 9695 case CMD_STOP_AP: 9696 case CMD_START_DRIVER: 9697 case CMD_STOP_DRIVER: 9698 case CMD_SET_OPERATIONAL_MODE: 9699 case CMD_SET_COUNTRY_CODE: 9700 case CMD_SET_FREQUENCY_BAND: 9701 case CMD_START_PACKET_FILTERING: 9702 case CMD_STOP_PACKET_FILTERING: 9703 deferMessage(message); 9704 break; 9705 default: 9706 return NOT_HANDLED; 9707 } 9708 return HANDLED; 9709 } 9710 } 9711 9712 /** 9713 * State machine initiated requests can have replyTo set to null indicating 9714 * there are no recepients, we ignore those reply actions. 9715 */ 9716 private void replyToMessage(Message msg, int what) { 9717 if (msg.replyTo == null) return; 9718 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9719 mReplyChannel.replyToMessage(msg, dstMsg); 9720 } 9721 9722 private void replyToMessage(Message msg, int what, int arg1) { 9723 if (msg.replyTo == null) return; 9724 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9725 dstMsg.arg1 = arg1; 9726 mReplyChannel.replyToMessage(msg, dstMsg); 9727 } 9728 9729 private void replyToMessage(Message msg, int what, Object obj) { 9730 if (msg.replyTo == null) return; 9731 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9732 dstMsg.obj = obj; 9733 mReplyChannel.replyToMessage(msg, dstMsg); 9734 } 9735 9736 /** 9737 * arg2 on the source message has a unique id that needs to be retained in replies 9738 * to match the request 9739 * <p>see WifiManager for details 9740 */ 9741 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9742 Message msg = Message.obtain(); 9743 msg.what = what; 9744 msg.arg2 = srcMsg.arg2; 9745 return msg; 9746 } 9747 9748 /** 9749 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9750 * @param msg Must have a WifiConfiguration obj to succeed 9751 */ 9752 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9753 WifiConfiguration config) { 9754 if (config != null && config.preSharedKey != null) { 9755 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9756 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9757 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9758 wifiCredentialEventType); 9759 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9760 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9761 } 9762 } 9763 9764 private static int parseHex(char ch) { 9765 if ('0' <= ch && ch <= '9') { 9766 return ch - '0'; 9767 } else if ('a' <= ch && ch <= 'f') { 9768 return ch - 'a' + 10; 9769 } else if ('A' <= ch && ch <= 'F') { 9770 return ch - 'A' + 10; 9771 } else { 9772 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9773 } 9774 } 9775 9776 private byte[] parseHex(String hex) { 9777 /* This only works for good input; don't throw bad data at it */ 9778 if (hex == null) { 9779 return new byte[0]; 9780 } 9781 9782 if (hex.length() % 2 != 0) { 9783 throw new NumberFormatException(hex + " is not a valid hex string"); 9784 } 9785 9786 byte[] result = new byte[(hex.length())/2 + 1]; 9787 result[0] = (byte) ((hex.length())/2); 9788 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9789 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9790 byte b = (byte) (val & 0xFF); 9791 result[j] = b; 9792 } 9793 9794 return result; 9795 } 9796 9797 private static String makeHex(byte[] bytes) { 9798 StringBuilder sb = new StringBuilder(); 9799 for (byte b : bytes) { 9800 sb.append(String.format("%02x", b)); 9801 } 9802 return sb.toString(); 9803 } 9804 9805 private static String makeHex(byte[] bytes, int from, int len) { 9806 StringBuilder sb = new StringBuilder(); 9807 for (int i = 0; i < len; i++) { 9808 sb.append(String.format("%02x", bytes[from+i])); 9809 } 9810 return sb.toString(); 9811 } 9812 9813 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9814 9815 int len = array1.length + array2.length + array3.length; 9816 9817 if (array1.length != 0) { 9818 len++; /* add another byte for size */ 9819 } 9820 9821 if (array2.length != 0) { 9822 len++; /* add another byte for size */ 9823 } 9824 9825 if (array3.length != 0) { 9826 len++; /* add another byte for size */ 9827 } 9828 9829 byte[] result = new byte[len]; 9830 9831 int index = 0; 9832 if (array1.length != 0) { 9833 result[index] = (byte) (array1.length & 0xFF); 9834 index++; 9835 for (byte b : array1) { 9836 result[index] = b; 9837 index++; 9838 } 9839 } 9840 9841 if (array2.length != 0) { 9842 result[index] = (byte) (array2.length & 0xFF); 9843 index++; 9844 for (byte b : array2) { 9845 result[index] = b; 9846 index++; 9847 } 9848 } 9849 9850 if (array3.length != 0) { 9851 result[index] = (byte) (array3.length & 0xFF); 9852 index++; 9853 for (byte b : array3) { 9854 result[index] = b; 9855 index++; 9856 } 9857 } 9858 return result; 9859 } 9860 9861 private static byte[] concatHex(byte[] array1, byte[] array2) { 9862 9863 int len = array1.length + array2.length; 9864 9865 byte[] result = new byte[len]; 9866 9867 int index = 0; 9868 if (array1.length != 0) { 9869 for (byte b : array1) { 9870 result[index] = b; 9871 index++; 9872 } 9873 } 9874 9875 if (array2.length != 0) { 9876 for (byte b : array2) { 9877 result[index] = b; 9878 index++; 9879 } 9880 } 9881 9882 return result; 9883 } 9884 9885 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9886 if (targetWificonfiguration == null 9887 || targetWificonfiguration.networkId == requestData.networkId) { 9888 logd("id matches targetWifiConfiguration"); 9889 } else { 9890 logd("id does not match targetWifiConfiguration"); 9891 return; 9892 } 9893 9894 TelephonyManager tm = (TelephonyManager) 9895 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9896 9897 if (tm != null) { 9898 StringBuilder sb = new StringBuilder(); 9899 for (String challenge : requestData.data) { 9900 9901 if (challenge == null || challenge.isEmpty()) 9902 continue; 9903 logd("RAND = " + challenge); 9904 9905 byte[] rand = null; 9906 try { 9907 rand = parseHex(challenge); 9908 } catch (NumberFormatException e) { 9909 loge("malformed challenge"); 9910 continue; 9911 } 9912 9913 String base64Challenge = android.util.Base64.encodeToString( 9914 rand, android.util.Base64.NO_WRAP); 9915 /* 9916 * First, try with appType = 2 => USIM according to 9917 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9918 */ 9919 int appType = 2; 9920 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9921 if (tmResponse == null) { 9922 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9923 * appType = 1 => SIM 9924 */ 9925 appType = 1; 9926 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9927 } 9928 logv("Raw Response - " + tmResponse); 9929 9930 if (tmResponse != null && tmResponse.length() > 4) { 9931 byte[] result = android.util.Base64.decode(tmResponse, 9932 android.util.Base64.DEFAULT); 9933 logv("Hex Response -" + makeHex(result)); 9934 int sres_len = result[0]; 9935 String sres = makeHex(result, 1, sres_len); 9936 int kc_offset = 1+sres_len; 9937 int kc_len = result[kc_offset]; 9938 String kc = makeHex(result, 1 + kc_offset, kc_len); 9939 sb.append(":" + kc + ":" + sres); 9940 logv("kc:" + kc + " sres:" + sres); 9941 9942 String response = sb.toString(); 9943 logv("Supplicant Response -" + response); 9944 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9945 } else { 9946 loge("bad response - " + tmResponse); 9947 mWifiNative.simAuthFailedResponse(requestData.networkId); 9948 } 9949 } 9950 9951 } else { 9952 loge("could not get telephony manager"); 9953 mWifiNative.simAuthFailedResponse(requestData.networkId); 9954 } 9955 } 9956 9957 void handle3GAuthRequest(SimAuthRequestData requestData) { 9958 StringBuilder sb = new StringBuilder(); 9959 byte[] rand = null; 9960 byte[] authn = null; 9961 String res_type = "UMTS-AUTH"; 9962 9963 if (targetWificonfiguration == null 9964 || targetWificonfiguration.networkId == requestData.networkId) { 9965 logd("id matches targetWifiConfiguration"); 9966 } else { 9967 logd("id does not match targetWifiConfiguration"); 9968 return; 9969 } 9970 if (requestData.data.length == 2) { 9971 try { 9972 rand = parseHex(requestData.data[0]); 9973 authn = parseHex(requestData.data[1]); 9974 } catch (NumberFormatException e) { 9975 loge("malformed challenge"); 9976 } 9977 } else { 9978 loge("malformed challenge"); 9979 } 9980 9981 String tmResponse = ""; 9982 if (rand != null && authn != null) { 9983 String base64Challenge = android.util.Base64.encodeToString( 9984 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9985 9986 TelephonyManager tm = (TelephonyManager) 9987 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9988 if (tm != null) { 9989 int appType = 2; // 2 => USIM 9990 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9991 logv("Raw Response - " + tmResponse); 9992 } else { 9993 loge("could not get telephony manager"); 9994 } 9995 } 9996 9997 boolean good_response = false; 9998 if (tmResponse != null && tmResponse.length() > 4) { 9999 byte[] result = android.util.Base64.decode(tmResponse, 10000 android.util.Base64.DEFAULT); 10001 loge("Hex Response - " + makeHex(result)); 10002 byte tag = result[0]; 10003 if (tag == (byte) 0xdb) { 10004 logv("successful 3G authentication "); 10005 int res_len = result[1]; 10006 String res = makeHex(result, 2, res_len); 10007 int ck_len = result[res_len + 2]; 10008 String ck = makeHex(result, res_len + 3, ck_len); 10009 int ik_len = result[res_len + ck_len + 3]; 10010 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10011 sb.append(":" + ik + ":" + ck + ":" + res); 10012 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10013 good_response = true; 10014 } else if (tag == (byte) 0xdc) { 10015 loge("synchronisation failure"); 10016 int auts_len = result[1]; 10017 String auts = makeHex(result, 2, auts_len); 10018 res_type = "UMTS-AUTS"; 10019 sb.append(":" + auts); 10020 logv("auts:" + auts); 10021 good_response = true; 10022 } else { 10023 loge("bad response - unknown tag = " + tag); 10024 } 10025 } else { 10026 loge("bad response - " + tmResponse); 10027 } 10028 10029 if (good_response) { 10030 String response = sb.toString(); 10031 logv("Supplicant Response -" + response); 10032 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10033 } else { 10034 mWifiNative.umtsAuthFailedResponse(requestData.networkId); 10035 } 10036 } 10037 10038 public int getCurrentUserId() { 10039 return mCurrentUserId; 10040 } 10041 10042 /** 10043 * @param reason reason code from supplicant on network disconnected event 10044 * @return true if this is a suspicious disconnect 10045 */ 10046 static boolean unexpectedDisconnectedReason(int reason) { 10047 return reason == 2 // PREV_AUTH_NOT_VALID 10048 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10049 || reason == 7 // FRAME_FROM_NONASSOC_STA 10050 || reason == 8 // STA_HAS_LEFT 10051 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10052 || reason == 14 // MICHAEL_MIC_FAILURE 10053 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10054 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10055 || reason == 18 // GROUP_CIPHER_NOT_VALID 10056 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10057 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10058 || reason == 34; // DISASSOC_LOW_ACK 10059 } 10060 10061 /** 10062 * Update WifiMetrics before dumping 10063 */ 10064 void updateWifiMetrics() { 10065 int numSavedNetworks = mWifiConfigStore.getConfiguredNetworksSize(); 10066 int numOpenNetworks = 0; 10067 int numPersonalNetworks = 0; 10068 int numEnterpriseNetworks = 0; 10069 int numNetworksAddedByUser = 0; 10070 int numNetworksAddedByApps = 0; 10071 for (WifiConfiguration config : mWifiConfigStore.getConfiguredNetworks()) { 10072 if (config.allowedAuthAlgorithms.get(WifiConfiguration.AuthAlgorithm.OPEN)) { 10073 numOpenNetworks++; 10074 } else if (config.isEnterprise()) { 10075 numEnterpriseNetworks++; 10076 } else { 10077 numPersonalNetworks++; 10078 } 10079 if (config.selfAdded) { 10080 numNetworksAddedByUser++; 10081 } else { 10082 numNetworksAddedByApps++; 10083 } 10084 } 10085 mWifiMetrics.setNumSavedNetworks(numSavedNetworks); 10086 mWifiMetrics.setNumOpenNetworks(numOpenNetworks); 10087 mWifiMetrics.setNumPersonalNetworks(numPersonalNetworks); 10088 mWifiMetrics.setNumEnterpriseNetworks(numEnterpriseNetworks); 10089 mWifiMetrics.setNumNetworksAddedByUser(numNetworksAddedByUser); 10090 mWifiMetrics.setNumNetworksAddedByApps(numNetworksAddedByApps); 10091 10092 /* <TODO> decide how to access WifiServiecImpl.isLocationEnabled() or if to do it manually 10093 mWifiMetrics.setIsLocationEnabled(Settings.Secure.getInt( 10094 mContext.getContentResolver(), 10095 Settings.Secure.LOCATION_MODE, Settings.Secure.LOCATION_MODE_OFF) 10096 != Settings.Secure.LOCATION_MODE_OFF); 10097 */ 10098 10099 /* <TODO> decide how statemachine will access WifiSettingsStore 10100 mWifiMetrics.setIsScanningAlwaysEnabled(mSettingsStore.isScanningAlwaysAvailable()); 10101 */ 10102 } 10103 10104 private static String getLinkPropertiesSummary(LinkProperties lp) { 10105 List<String> attributes = new ArrayList(6); 10106 if (lp.hasIPv4Address()) { 10107 attributes.add("v4"); 10108 } 10109 if (lp.hasIPv4DefaultRoute()) { 10110 attributes.add("v4r"); 10111 } 10112 if (lp.hasIPv4DnsServer()) { 10113 attributes.add("v4dns"); 10114 } 10115 if (lp.hasGlobalIPv6Address()) { 10116 attributes.add("v6"); 10117 } 10118 if (lp.hasIPv6DefaultRoute()) { 10119 attributes.add("v6r"); 10120 } 10121 if (lp.hasIPv6DnsServer()) { 10122 attributes.add("v6dns"); 10123 } 10124 10125 // TODO: Replace with String.join(" ", attributes) once we're fully on JDK 8. 10126 StringBuilder sb = new StringBuilder(); 10127 boolean first = true; 10128 for (String attr : attributes) { 10129 if (!first) { 10130 sb.append(" "); 10131 } else { 10132 first = false; 10133 } 10134 sb.append(attr); 10135 } 10136 return sb.toString(); 10137 } 10138 10139 /** 10140 * Try to connect to the network of candidate. According to the current connected network, this 10141 * API determines whether no action, disconnect and connect, or roaming. 10142 * 10143 * @param candidate the candidate network to connect to 10144 */ 10145 private void tryToConnectToNetwork(WifiConfiguration candidate) { 10146 if (candidate == null) { 10147 if (DBG) { 10148 Log.d(TAG, "Try to connect to null, give up"); 10149 } 10150 return; 10151 } 10152 10153 ScanResult scanResultCandidate = candidate.getNetworkSelectionStatus().getCandidate(); 10154 if (scanResultCandidate == null) { 10155 Log.e(TAG, "tryToConnectToNetwork: bad candidate. Network:" + candidate 10156 + " scanresult: " + scanResultCandidate); 10157 return; 10158 } 10159 10160 String targetBssid = scanResultCandidate.BSSID; 10161 String targetAssociationId = candidate.SSID + " : " + targetBssid; 10162 if (targetBssid != null && targetBssid.equals(mWifiInfo.getBSSID())) { 10163 if (DBG) { 10164 Log.d(TAG, "tryToConnectToNetwork: Already connect to" + targetAssociationId); 10165 } 10166 return; 10167 } 10168 10169 WifiConfiguration currentConnectedNetwork = mWifiConfigStore 10170 .getWifiConfiguration(mWifiInfo.getNetworkId()); 10171 String currentAssociationId = (currentConnectedNetwork == null) ? "Disconnected" : 10172 (mWifiInfo.getSSID() + " : " + mWifiInfo.getBSSID()); 10173 10174 if (currentConnectedNetwork != null 10175 && (currentConnectedNetwork.networkId == candidate.networkId 10176 || currentConnectedNetwork.isLinked(candidate))) { 10177 if (DBG) { 10178 Log.d(TAG, "tryToConnectToNetwork: Roaming from " + currentAssociationId + " to " 10179 + targetAssociationId); 10180 } 10181 sendMessage(CMD_AUTO_ROAM, candidate.networkId, 0, scanResultCandidate); 10182 } else { 10183 if (DBG) { 10184 Log.d(TAG, "tryToConnectToNetwork: Reconnect from " + currentAssociationId + " to " 10185 + targetAssociationId); 10186 } 10187 10188 sendMessage(CMD_AUTO_CONNECT, candidate.networkId, 0, scanResultCandidate.BSSID); 10189 } 10190 } 10191} 10192