WifiStateMachine.java revision ae815bc71287f8a85727034c40bb07247a3d9415
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.content.pm.UserInfo; 44import android.database.ContentObserver; 45import android.net.ConnectivityManager; 46import android.net.DhcpResults; 47import android.net.DhcpStateMachine; 48import android.net.InterfaceConfiguration; 49import android.net.LinkAddress; 50import android.net.LinkProperties; 51import android.net.Network; 52import android.net.NetworkAgent; 53import android.net.NetworkCapabilities; 54import android.net.NetworkFactory; 55import android.net.NetworkInfo; 56import android.net.NetworkInfo.DetailedState; 57import android.net.NetworkRequest; 58import android.net.NetworkUtils; 59import android.net.RouteInfo; 60import android.net.StaticIpConfiguration; 61import android.net.ip.IpManager; 62import android.net.wifi.PasspointManagementObjectDefinition; 63import android.net.wifi.RssiPacketCountInfo; 64import android.net.wifi.ScanResult; 65import android.net.wifi.ScanSettings; 66import android.net.wifi.SupplicantState; 67import android.net.wifi.WifiChannel; 68import android.net.wifi.WifiConfiguration; 69import android.net.wifi.WifiConnectionStatistics; 70import android.net.wifi.WifiEnterpriseConfig; 71import android.net.wifi.WifiInfo; 72import android.net.wifi.WifiLinkLayerStats; 73import android.net.wifi.WifiManager; 74import android.net.wifi.WifiScanner; 75import android.net.wifi.WifiSsid; 76import android.net.wifi.WpsInfo; 77import android.net.wifi.WpsResult; 78import android.net.wifi.WpsResult.Status; 79import android.net.wifi.p2p.IWifiP2pManager; 80import android.os.BatteryStats; 81import android.os.Binder; 82import android.os.Bundle; 83import android.os.IBinder; 84import android.os.INetworkManagementService; 85import android.os.Looper; 86import android.os.Message; 87import android.os.Messenger; 88import android.os.PowerManager; 89import android.os.Process; 90import android.os.RemoteException; 91import android.os.SystemClock; 92import android.os.SystemProperties; 93import android.os.UserHandle; 94import android.os.UserManager; 95import android.os.WorkSource; 96import android.provider.Settings; 97import android.telephony.TelephonyManager; 98import android.text.TextUtils; 99import android.util.Log; 100import android.util.LruCache; 101 102import com.android.internal.R; 103import com.android.internal.app.IBatteryStats; 104import com.android.internal.util.AsyncChannel; 105import com.android.internal.util.Protocol; 106import com.android.internal.util.State; 107import com.android.internal.util.StateMachine; 108import com.android.server.connectivity.KeepalivePacketData; 109import com.android.server.wifi.hotspot2.IconEvent; 110import com.android.server.wifi.hotspot2.NetworkDetail; 111import com.android.server.wifi.hotspot2.Utils; 112import com.android.server.wifi.p2p.WifiP2pServiceImpl; 113 114import java.io.BufferedReader; 115import java.io.FileDescriptor; 116import java.io.FileNotFoundException; 117import java.io.FileReader; 118import java.io.IOException; 119import java.io.PrintWriter; 120import java.net.Inet4Address; 121import java.net.InetAddress; 122import java.util.ArrayList; 123import java.util.Arrays; 124import java.util.Calendar; 125import java.util.HashSet; 126import java.util.LinkedList; 127import java.util.List; 128import java.util.Locale; 129import java.util.Queue; 130import java.util.Random; 131import java.util.Set; 132import java.util.concurrent.atomic.AtomicBoolean; 133import java.util.concurrent.atomic.AtomicInteger; 134import java.util.regex.Pattern; 135 136/** 137 * TODO: 138 * Deprecate WIFI_STATE_UNKNOWN 139 */ 140 141/** 142 * Track the state of Wifi connectivity. All event handling is done here, 143 * and all changes in connectivity state are initiated here. 144 * 145 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 146 * In the current implementation, we support concurrent wifi p2p and wifi operation. 147 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 148 * handles p2p operation. 149 * 150 * @hide 151 */ 152public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler, 153 WifiNative.WifiRssiEventHandler { 154 155 private static final String NETWORKTYPE = "WIFI"; 156 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 157 private static boolean DBG = false; 158 private static boolean VDBG = false; 159 private static boolean VVDBG = false; 160 private static boolean USE_PAUSE_SCANS = false; 161 private static boolean mLogMessages = false; 162 private static final String TAG = "WifiStateMachine"; 163 164 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 165 166 private static final String GOOGLE_OUI = "DA-A1-19"; 167 168 /* temporary debug flag - best network selection development */ 169 private static boolean PDBG = false; 170 171 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 172 * the corresponding BSSID. 173 */ 174 private boolean didBlackListBSSID = false; 175 176 /** 177 * Log with error attribute 178 * 179 * @param s is string log 180 */ 181 protected void loge(String s) { 182 Log.e(getName(), s); 183 } 184 protected void logd(String s) { 185 Log.d(getName(), s); 186 } 187 protected void log(String s) {; 188 Log.d(getName(), s); 189 } 190 191 private WifiMetrics mWifiMetrics; 192 private WifiMonitor mWifiMonitor; 193 private WifiNative mWifiNative; 194 private WifiConfigStore mWifiConfigStore; 195 private WifiQualifiedNetworkSelector mWifiQualifiedNetworkSelector; 196 private INetworkManagementService mNwService; 197 private ConnectivityManager mCm; 198 private BaseWifiLogger mWifiLogger; 199 private WifiApConfigStore mWifiApConfigStore; 200 private final boolean mP2pSupported; 201 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 202 private boolean mTemporarilyDisconnectWifi = false; 203 private final String mPrimaryDeviceType; 204 private final UserManager mUserManager; 205 private final Clock mClock = new Clock(); 206 207 /* Scan results handling */ 208 private List<ScanDetail> mScanResults = new ArrayList<>(); 209 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 210 private static final int SCAN_RESULT_CACHE_SIZE = 160; 211 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 212 // For debug, number of known scan results that were found as part of last scan result event, 213 // as well the number of scans results returned by the supplicant with that message 214 private int mNumScanResultsKnown; 215 private int mNumScanResultsReturned; 216 217 private boolean mScreenOn = false; 218 219 /* Chipset supports background scan */ 220 private final boolean mBackgroundScanSupported; 221 222 private final String mInterfaceName; 223 /* Tethering interface could be separate from wlan interface */ 224 private String mTetherInterfaceName; 225 226 private int mLastSignalLevel = -1; 227 private String mLastBssid; 228 private int mLastNetworkId; // The network Id we successfully joined 229 private ScanDetail mActiveScanDetail; // ScanDetail associated with active network 230 private boolean linkDebouncing = false; 231 232 private boolean mHalBasedPnoDriverSupported = false; 233 234 // Below booleans are configurations coming from the Developper Settings 235 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 236 private boolean mHalBasedPnoEnableInDevSettings = false; 237 238 private int mHalFeatureSet = 0; 239 private static int mPnoResultFound = 0; 240 241 private int mCurrentUserId = UserHandle.USER_SYSTEM; 242 243 private boolean mAllowUntrustedConnections = false; 244 245 @Override 246 public void onPnoNetworkFound(ScanResult results[]) { 247 if (DBG) { 248 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 249 for (int i = 0; i < results.length; i++) { 250 Log.e(TAG, results[i].toString()); 251 } 252 } 253 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 254 } 255 256 public void processPnoNetworkFound(ScanResult results[]) { 257 ScanSettings settings = new ScanSettings(); 258 settings.channelSet = new ArrayList<WifiChannel>(); 259 StringBuilder sb = new StringBuilder(); 260 sb.append(""); 261 for (int i=0; i<results.length; i++) { 262 WifiChannel channel = new WifiChannel(); 263 channel.freqMHz = results[i].frequency; 264 settings.channelSet.add(channel); 265 sb.append(results[i].SSID).append(" "); 266 } 267 268 stopPnoOffload(); 269 270 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 271 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 272 mPnoResultFound ++; 273 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 274 int delay = 30 * 1000; 275 // reconfigure Pno after 1 minutes if we're still in disconnected state 276 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 277 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 278 (long)delay); 279 mRestartAutoJoinOffloadCounter++; 280 } 281 282 @Override 283 public void onRssiThresholdBreached(byte curRssi) { 284 if (DBG) { 285 Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi); 286 } 287 sendMessage(CMD_RSSI_THRESHOLD_BREACH, curRssi); 288 } 289 290 public void processRssiThreshold(byte curRssi, int reason) { 291 if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) { 292 Log.wtf(TAG, "processRssiThreshold: Invalid rssi " + curRssi); 293 return; 294 } 295 for (int i = 0; i < mRssiRanges.length; i++) { 296 if (curRssi < mRssiRanges[i]) { 297 // Assume sorted values(ascending order) for rssi, 298 // bounded by high(127) and low(-128) at extremeties 299 byte maxRssi = mRssiRanges[i]; 300 byte minRssi = mRssiRanges[i-1]; 301 // This value of hw has to be believed as this value is averaged and has breached 302 // the rssi thresholds and raised event to host. This would be eggregious if this 303 // value is invalid 304 mWifiInfo.setRssi((int) curRssi); 305 updateCapabilities(getCurrentWifiConfiguration()); 306 int ret = startRssiMonitoringOffload(maxRssi, minRssi); 307 Log.d(TAG, "Re-program RSSI thresholds for " + smToString(reason) + 308 ": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret); 309 break; 310 } 311 } 312 } 313 public void registerNetworkDisabled(int netId) { 314 // Restart legacy PNO and autojoin offload if needed 315 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 316 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 317 mRestartAutoJoinOffloadCounter++; 318 } 319 320 // Testing various network disconnect cases by sending lots of spurious 321 // disconnect to supplicant 322 private boolean testNetworkDisconnect = false; 323 324 private boolean mEnableRssiPolling = false; 325 private boolean mLegacyPnoEnabled = false; 326 private int mRssiPollToken = 0; 327 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 328 * In CONNECT_MODE, the STA can scan and connect to an access point 329 * In SCAN_ONLY_MODE, the STA can only scan for access points 330 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 331 */ 332 private int mOperationalMode = CONNECT_MODE; 333 private boolean mIsScanOngoing = false; 334 private boolean mIsFullScanOngoing = false; 335 private boolean mSendScanResultsBroadcast = false; 336 337 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 338 private WorkSource mScanWorkSource = null; 339 private static final int UNKNOWN_SCAN_SOURCE = -1; 340 private static final int SCAN_ALARM_SOURCE = -2; 341 private static final int ADD_OR_UPDATE_SOURCE = -3; 342 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 343 private static final int ENABLE_WIFI = -5; 344 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 345 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 346 347 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 348 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 349 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 350 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 351 352 /* Tracks if state machine has received any screen state change broadcast yet. 353 * We can miss one of these at boot. 354 */ 355 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 356 357 private boolean mBluetoothConnectionActive = false; 358 359 private PowerManager.WakeLock mSuspendWakeLock; 360 361 /** 362 * Interval in milliseconds between polling for RSSI 363 * and linkspeed information 364 */ 365 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 366 367 /** 368 * Interval in milliseconds between receiving a disconnect event 369 * while connected to a good AP, and handling the disconnect proper 370 */ 371 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 372 373 /** 374 * Delay between supplicant restarts upon failure to establish connection 375 */ 376 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 377 378 /** 379 * Number of times we attempt to restart supplicant 380 */ 381 private static final int SUPPLICANT_RESTART_TRIES = 5; 382 383 private int mSupplicantRestartCount = 0; 384 /* Tracks sequence number on stop failure message */ 385 private int mSupplicantStopFailureToken = 0; 386 387 /** 388 * Tether state change notification time out 389 */ 390 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 391 392 /* Tracks sequence number on a tether notification time out */ 393 private int mTetherToken = 0; 394 395 /** 396 * Driver start time out. 397 */ 398 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 399 400 /* Tracks sequence number on a driver time out */ 401 private int mDriverStartToken = 0; 402 403 /** 404 * Don't select new network when previous network selection is 405 * pending connection for this much time 406 */ 407 private static final int CONNECT_TIMEOUT_MSEC = 3000; 408 409 /** 410 * The link properties of the wifi interface. 411 * Do not modify this directly; use updateLinkProperties instead. 412 */ 413 private LinkProperties mLinkProperties; 414 415 /* Tracks sequence number on a periodic scan message */ 416 private int mPeriodicScanToken = 0; 417 418 // Wakelock held during wifi start/stop and driver load/unload 419 private PowerManager.WakeLock mWakeLock; 420 421 private Context mContext; 422 423 private final Object mDhcpResultsLock = new Object(); 424 private DhcpResults mDhcpResults; 425 426 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 427 private WifiInfo mWifiInfo; 428 private NetworkInfo mNetworkInfo; 429 private final NetworkCapabilities mDfltNetworkCapabilities; 430 private SupplicantStateTracker mSupplicantStateTracker; 431 432 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 433 434 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 435 436 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 437 private boolean mAutoRoaming = false; 438 439 // Roaming failure count 440 private int mRoamFailCount = 0; 441 442 // This is the BSSID we are trying to associate to, it can be set to "any" 443 // if we havent selected a BSSID for joining. 444 // if we havent selected a BSSID for joining. 445 // The BSSID we are associated to is found in mWifiInfo 446 private String mTargetRoamBSSID = "any"; 447 //This one is used to track whta is the current target network ID. This is used for error 448 // handling during connection setup since many error message from supplicant does not report 449 // SSID Once connected, it will be set to invalid 450 private int mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 451 452 private long mLastDriverRoamAttempt = 0; 453 454 private WifiConfiguration targetWificonfiguration = null; 455 456 // Used as debug to indicate which configuration last was saved 457 private WifiConfiguration lastSavedConfigurationAttempt = null; 458 459 // Used as debug to indicate which configuration last was removed 460 private WifiConfiguration lastForgetConfigurationAttempt = null; 461 462 //Random used by softAP channel Selection 463 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 464 465 boolean isRoaming() { 466 return mAutoRoaming; 467 } 468 469 public void autoRoamSetBSSID(int netId, String bssid) { 470 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 471 } 472 473 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 474 boolean ret = true; 475 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 476 if (bssid == null) bssid = "any"; 477 if (config == null) return false; // Nothing to do 478 479 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 480 return false; // We didnt change anything 481 } 482 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 483 // Changing to ANY 484 if (!mWifiConfigStore.roamOnAny) { 485 ret = false; // Nothing to do 486 } 487 } 488 if (config.BSSID != null) { 489 bssid = config.BSSID; 490 if (DBG) { 491 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 492 } 493 } 494 495 if (VDBG) { 496 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 497 } 498 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 499 mTargetRoamBSSID = bssid; 500 mWifiConfigStore.saveWifiConfigBSSID(config); 501 return ret; 502 } 503 504 /** 505 * set Config's default BSSID (for association purpose) 506 * @param config config need set BSSID 507 * @param bssid default BSSID to assocaite with when connect to this network 508 * @return false -- does not change the current default BSSID of the configure 509 * true -- change the current default BSSID of the configur 510 */ 511 private boolean setTargetBssid(WifiConfiguration config, String bssid) { 512 if (config == null) { 513 return false; 514 } 515 516 if (config.BSSID != null) { 517 bssid = config.BSSID; 518 if (DBG) { 519 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 520 } 521 } 522 523 if (bssid == null) { 524 bssid = "any"; 525 } 526 527 String networkSelectionBSSID = config.getNetworkSelectionStatus() 528 .getNetworkSelectionBSSID(); 529 if (networkSelectionBSSID != null && networkSelectionBSSID.equals(bssid)) { 530 if (DBG) { 531 Log.d(TAG, "Current prefered BSSID is same as target"); 532 return false; 533 } 534 } 535 536 if (DBG) { 537 Log.d(TAG, "target set to " + config.SSID + ":" + bssid); 538 } 539 540 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 541 mTargetRoamBSSID = bssid; 542 mWifiConfigStore.saveWifiConfigBSSID(config); 543 return true; 544 } 545 /** 546 * Save the UID correctly depending on if this is a new or existing network. 547 * @return true if operation is authorized, false otherwise 548 */ 549 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 550 if (!mWifiConfigStore.isNetworkConfigured(config)) { 551 config.creatorUid = uid; 552 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 553 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 554 return false; 555 } 556 557 config.lastUpdateUid = uid; 558 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 559 560 return true; 561 562 } 563 564 /** 565 * Checks to see if user has specified if the apps configuration is connectable. 566 * If the user hasn't specified we query the user and return true. 567 * 568 * @param message The message to be deferred 569 * @param netId Network id of the configuration to check against 570 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 571 * CONFIG_OVERRIDE_PERMISSION 572 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 573 */ 574 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 575 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 576 577 // We can only evaluate saved configurations. 578 if (config == null) { 579 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 580 return true; 581 } 582 583 switch (config.userApproved) { 584 case WifiConfiguration.USER_APPROVED: 585 case WifiConfiguration.USER_BANNED: 586 return false; 587 case WifiConfiguration.USER_PENDING: 588 default: // USER_UNSPECIFIED 589 /* the intention was to ask user here; but a dialog box is * 590 * too invasive; so we are going to allow connection for now */ 591 config.userApproved = WifiConfiguration.USER_APPROVED; 592 return false; 593 } 594 } 595 596 private final IpManager mIpManager; 597 598 private AlarmManager mAlarmManager; 599 private PendingIntent mScanIntent; 600 private PendingIntent mDriverStopIntent; 601 private PendingIntent mPnoIntent; 602 603 private int mDisconnectedPnoAlarmCount = 0; 604 /* Tracks current frequency mode */ 605 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 606 607 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 608 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 609 610 // Channel for sending replies. 611 private AsyncChannel mReplyChannel = new AsyncChannel(); 612 613 private WifiP2pServiceImpl mWifiP2pServiceImpl; 614 615 // Used to initiate a connection with WifiP2pService 616 private AsyncChannel mWifiP2pChannel; 617 618 private WifiScanner mWifiScanner; 619 620 private int mConnectionRequests = 0; 621 private WifiNetworkFactory mNetworkFactory; 622 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 623 private WifiNetworkAgent mNetworkAgent; 624 625 private String[] mWhiteListedSsids = null; 626 627 private byte[] mRssiRanges; 628 629 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 630 // We should really persist that into the networkHistory.txt file, and read it back when 631 // WifiStateMachine starts up 632 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 633 634 // Used to filter out requests we couldn't possibly satisfy. 635 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 636 637 /* The base for wifi message types */ 638 static final int BASE = Protocol.BASE_WIFI; 639 /* Start the supplicant */ 640 static final int CMD_START_SUPPLICANT = BASE + 11; 641 /* Stop the supplicant */ 642 static final int CMD_STOP_SUPPLICANT = BASE + 12; 643 /* Start the driver */ 644 static final int CMD_START_DRIVER = BASE + 13; 645 /* Stop the driver */ 646 static final int CMD_STOP_DRIVER = BASE + 14; 647 /* Indicates Static IP succeeded */ 648 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 649 /* Indicates Static IP failed */ 650 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 651 /* Indicates supplicant stop failed */ 652 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 653 /* A delayed message sent to start driver when it fail to come up */ 654 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 655 656 /* Start the soft access point */ 657 static final int CMD_START_AP = BASE + 21; 658 /* Indicates soft ap start succeeded */ 659 static final int CMD_START_AP_SUCCESS = BASE + 22; 660 /* Indicates soft ap start failed */ 661 static final int CMD_START_AP_FAILURE = BASE + 23; 662 /* Stop the soft access point */ 663 static final int CMD_STOP_AP = BASE + 24; 664 /* Invoked when getting a tether state change notification */ 665 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 666 /* A delayed message sent to indicate tether state change failed to arrive */ 667 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 668 669 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 670 671 /* Supplicant commands */ 672 /* Is supplicant alive ? */ 673 static final int CMD_PING_SUPPLICANT = BASE + 51; 674 /* Add/update a network configuration */ 675 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 676 /* Delete a network */ 677 static final int CMD_REMOVE_NETWORK = BASE + 53; 678 /* Enable a network. The device will attempt a connection to the given network. */ 679 static final int CMD_ENABLE_NETWORK = BASE + 54; 680 /* Enable all networks */ 681 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 682 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 683 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 684 /* Clear the blacklist network list */ 685 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 686 /* Save configuration */ 687 static final int CMD_SAVE_CONFIG = BASE + 58; 688 /* Get configured networks */ 689 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 690 /* Get available frequencies */ 691 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 692 /* Get adaptors */ 693 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 694 /* Get configured networks with real preSharedKey */ 695 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 696 /* Get Link Layer Stats thru HAL */ 697 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 698 /* Supplicant commands after driver start*/ 699 /* Initiate a scan */ 700 static final int CMD_START_SCAN = BASE + 71; 701 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 702 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 703 /* Disconnect from a network */ 704 static final int CMD_DISCONNECT = BASE + 73; 705 /* Reconnect to a network */ 706 static final int CMD_RECONNECT = BASE + 74; 707 /* Reassociate to a network */ 708 static final int CMD_REASSOCIATE = BASE + 75; 709 /* Get Connection Statistis */ 710 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 711 712 /* Controls suspend mode optimizations 713 * 714 * When high perf mode is enabled, suspend mode optimizations are disabled 715 * 716 * When high perf mode is disabled, suspend mode optimizations are enabled 717 * 718 * Suspend mode optimizations include: 719 * - packet filtering 720 * - turn off roaming 721 * - DTIM wake up settings 722 */ 723 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 724 /* Set the country code */ 725 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 726 /* Enables RSSI poll */ 727 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 728 /* RSSI poll */ 729 static final int CMD_RSSI_POLL = BASE + 83; 730 /* Set up packet filtering */ 731 static final int CMD_START_PACKET_FILTERING = BASE + 84; 732 /* Clear packet filter */ 733 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 734 /* Enable suspend mode optimizations in the driver */ 735 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 736 /* Delayed NETWORK_DISCONNECT */ 737 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 738 /* When there are no saved networks, we do a periodic scan to notify user of 739 * an open network */ 740 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 741 /* Test network Disconnection NETWORK_DISCONNECT */ 742 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 743 744 private int testNetworkDisconnectCounter = 0; 745 746 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 747 static final int MULTICAST_V6 = 1; 748 static final int MULTICAST_V4 = 0; 749 750 /* Set the frequency band */ 751 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 752 /* Enable TDLS on a specific MAC address */ 753 static final int CMD_ENABLE_TDLS = BASE + 92; 754 /* DHCP/IP configuration watchdog */ 755 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 756 757 /** 758 * Watchdog for protecting against b/16823537 759 * Leave time for 4-way handshake to succeed 760 */ 761 static final int ROAM_GUARD_TIMER_MSEC = 15000; 762 763 int roamWatchdogCount = 0; 764 /* Roam state watchdog */ 765 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 766 /* Screen change intent handling */ 767 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 768 769 /* Disconnecting state watchdog */ 770 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 771 772 /* Remove a packages associated configrations */ 773 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 774 775 /* Disable an ephemeral network */ 776 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 777 778 /* Get matching network */ 779 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 780 781 /* alert from firmware */ 782 static final int CMD_FIRMWARE_ALERT = BASE + 100; 783 784 /* SIM is removed; reset any cached data for it */ 785 static final int CMD_RESET_SIM_NETWORKS = BASE + 101; 786 787 /* OSU APIs */ 788 static final int CMD_ADD_PASSPOINT_MO = BASE + 102; 789 static final int CMD_MODIFY_PASSPOINT_MO = BASE + 103; 790 static final int CMD_QUERY_OSU_ICON = BASE + 104; 791 792 /* try to match a provider with current network */ 793 static final int CMD_MATCH_PROVIDER_NETWORK = BASE + 105; 794 795 /** 796 * Make this timer 40 seconds, which is about the normal DHCP timeout. 797 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 798 * for more than 30 seconds. 799 */ 800 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 801 802 int obtainingIpWatchdogCount = 0; 803 804 /* Commands from/to the SupplicantStateTracker */ 805 /* Reset the supplicant state tracker */ 806 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 807 808 int disconnectingWatchdogCount = 0; 809 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 810 811 /* P2p commands */ 812 /* We are ok with no response here since we wont do much with it anyway */ 813 public static final int CMD_ENABLE_P2P = BASE + 131; 814 /* In order to shut down supplicant cleanly, we wait till p2p has 815 * been disabled */ 816 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 817 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 818 819 public static final int CMD_BOOT_COMPLETED = BASE + 134; 820 821 /* We now have a valid IP configuration. */ 822 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 823 /* We no longer have a valid IP configuration. */ 824 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 825 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 826 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 827 828 /* Supplicant is trying to associate to a given BSSID */ 829 static final int CMD_TARGET_BSSID = BASE + 141; 830 831 /* Reload all networks and reconnect */ 832 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 833 834 static final int CMD_AUTO_CONNECT = BASE + 143; 835 836 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 837 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 838 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 839 840 static final int CMD_UNWANTED_NETWORK = BASE + 144; 841 842 static final int CMD_AUTO_ROAM = BASE + 145; 843 844 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 845 846 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 847 848 static final int CMD_NETWORK_STATUS = BASE + 148; 849 850 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 851 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 852 853 /* Remove a packages associated configrations */ 854 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 855 856 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 857 858 /* used to restart PNO when it was stopped due to association attempt */ 859 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 860 861 static int mRestartAutoJoinOffloadCounter = 0; 862 863 /* used to log if PNO was started */ 864 static final int CMD_STARTED_PNO_DBG = BASE + 155; 865 866 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 867 868 /* used to log if PNO was started */ 869 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 870 871 /* used to log if GSCAN was started */ 872 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 873 874 /* used to offload sending IP packet */ 875 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 876 877 /* used to stop offload sending IP packet */ 878 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 879 880 /* used to start rssi monitoring in hw */ 881 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 882 883 /* used to stop rssi moniroting in hw */ 884 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 885 886 /* used to indicated RSSI threshold breach in hw */ 887 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 888 889 /* used to indicate that the foreground user was switched */ 890 static final int CMD_USER_SWITCH = BASE + 165; 891 892 /** 893 * Used temporarily to handle messages bounced between WifiStateMachine and IpManager. 894 * 895 * These will be deleted when DHCPv4 and static IP configuration are moved out. 896 */ 897 static final int CMD_IPV4_PROVISIONING_SUCCESS = BASE + 200; 898 static final int CMD_IPV4_PROVISIONING_FAILURE = BASE + 201; 899 900 901 /* Wifi state machine modes of operation */ 902 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 903 public static final int CONNECT_MODE = 1; 904 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 905 public static final int SCAN_ONLY_MODE = 2; 906 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 907 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 908 909 private static final int SUCCESS = 1; 910 private static final int FAILURE = -1; 911 912 /* Tracks if suspend optimizations need to be disabled by DHCP, 913 * screen or due to high perf mode. 914 * When any of them needs to disable it, we keep the suspend optimizations 915 * disabled 916 */ 917 private int mSuspendOptNeedsDisabled = 0; 918 919 private static final int SUSPEND_DUE_TO_DHCP = 1; 920 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 921 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 922 923 /* Tracks if user has enabled suspend optimizations through settings */ 924 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 925 926 /** 927 * Default framework scan interval in milliseconds. This is used in the scenario in which 928 * wifi chipset does not support background scanning to set up a 929 * periodic wake up scan so that the device can connect to a new access 930 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 931 * override this. 932 */ 933 private final int mDefaultFrameworkScanIntervalMs; 934 935 936 /** 937 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 938 */ 939 private final int mNoNetworksPeriodicScan; 940 941 /** 942 * Supplicant scan interval in milliseconds. 943 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 944 * from the default config if the setting is not set 945 */ 946 private long mSupplicantScanIntervalMs; 947 948 /** 949 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 950 */ 951 private long lastFullBandConnectedTimeMilli; 952 953 /** 954 * time interval to the next full band scan we will perform for 955 * autojoin while connected with screen lit 956 */ 957 private long fullBandConnectedTimeIntervalMilli; 958 959 /** 960 * max time interval to the next full band scan we will perform for 961 * autojoin while connected with screen lit 962 * Max time is 5 minutes 963 */ 964 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 965 966 /** 967 * Minimum time interval between enabling all networks. 968 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 969 * due to enabling every time. We add a threshold to avoid this. 970 */ 971 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 972 private long mLastEnableAllNetworksTime; 973 974 int mRunningBeaconCount = 0; 975 976 977 // config option that indicate whether or not to reset country code to default when 978 // cellular radio indicates country code loss 979 private boolean mRevertCountryCodeOnCellularLoss = false; 980 981 private String mDefaultCountryCode; 982 983 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 984 985 // Supplicant doesn't like setting the same country code multiple times (it may drop 986 // currently connected network), so we save the current device set country code here to avoid 987 // redundency 988 private String mDriverSetCountryCode = null; 989 990 /* Default parent state */ 991 private State mDefaultState = new DefaultState(); 992 /* Temporary initial state */ 993 private State mInitialState = new InitialState(); 994 /* Driver loaded, waiting for supplicant to start */ 995 private State mSupplicantStartingState = new SupplicantStartingState(); 996 /* Driver loaded and supplicant ready */ 997 private State mSupplicantStartedState = new SupplicantStartedState(); 998 /* Waiting for supplicant to stop and monitor to exit */ 999 private State mSupplicantStoppingState = new SupplicantStoppingState(); 1000 /* Driver start issued, waiting for completed event */ 1001 private State mDriverStartingState = new DriverStartingState(); 1002 /* Driver started */ 1003 private State mDriverStartedState = new DriverStartedState(); 1004 /* Wait until p2p is disabled 1005 * This is a special state which is entered right after we exit out of DriverStartedState 1006 * before transitioning to another state. 1007 */ 1008 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 1009 /* Driver stopping */ 1010 private State mDriverStoppingState = new DriverStoppingState(); 1011 /* Driver stopped */ 1012 private State mDriverStoppedState = new DriverStoppedState(); 1013 /* Scan for networks, no connection will be established */ 1014 private State mScanModeState = new ScanModeState(); 1015 /* Connecting to an access point */ 1016 private State mConnectModeState = new ConnectModeState(); 1017 /* Connected at 802.11 (L2) level */ 1018 private State mL2ConnectedState = new L2ConnectedState(); 1019 /* fetching IP after connection to access point (assoc+auth complete) */ 1020 private State mObtainingIpState = new ObtainingIpState(); 1021 /* Connected with IP addr */ 1022 private State mConnectedState = new ConnectedState(); 1023 /* Roaming */ 1024 private State mRoamingState = new RoamingState(); 1025 /* disconnect issued, waiting for network disconnect confirmation */ 1026 private State mDisconnectingState = new DisconnectingState(); 1027 /* Network is not connected, supplicant assoc+auth is not complete */ 1028 private State mDisconnectedState = new DisconnectedState(); 1029 /* Waiting for WPS to be completed*/ 1030 private State mWpsRunningState = new WpsRunningState(); 1031 1032 /* Soft ap is starting up */ 1033 private State mSoftApStartingState = new SoftApStartingState(); 1034 /* Soft ap is running */ 1035 private State mSoftApStartedState = new SoftApStartedState(); 1036 /* Soft ap is running and we are waiting for tether notification */ 1037 private State mTetheringState = new TetheringState(); 1038 /* Soft ap is running and we are tethered through connectivity service */ 1039 private State mTetheredState = new TetheredState(); 1040 /* Waiting for untether confirmation before stopping soft Ap */ 1041 private State mUntetheringState = new UntetheringState(); 1042 1043 1044 1045 private class WifiScanListener implements WifiScanner.ScanListener { 1046 @Override 1047 public void onSuccess() { 1048 Log.e(TAG, "WifiScanListener onSuccess"); 1049 }; 1050 @Override 1051 public void onFailure(int reason, String description) { 1052 Log.e(TAG, "WifiScanListener onFailure"); 1053 }; 1054 @Override 1055 public void onPeriodChanged(int periodInMs) { 1056 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1057 } 1058 @Override 1059 public void onResults(WifiScanner.ScanData[] results) { 1060 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1061 } 1062 @Override 1063 public void onFullResult(ScanResult fullScanResult) { 1064 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1065 } 1066 1067 WifiScanListener() {} 1068 } 1069 1070 WifiScanListener mWifiScanListener = new WifiScanListener(); 1071 1072 1073 private class TetherStateChange { 1074 ArrayList<String> available; 1075 ArrayList<String> active; 1076 1077 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1078 available = av; 1079 active = ac; 1080 } 1081 } 1082 1083 public static class SimAuthRequestData { 1084 int networkId; 1085 int protocol; 1086 String ssid; 1087 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1088 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1089 String[] data; 1090 } 1091 1092 /** 1093 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1094 * {@link WifiManager#WIFI_STATE_DISABLING}, 1095 * {@link WifiManager#WIFI_STATE_ENABLED}, 1096 * {@link WifiManager#WIFI_STATE_ENABLING}, 1097 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1098 */ 1099 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1100 1101 /** 1102 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1103 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1104 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1105 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1106 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1107 */ 1108 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1109 1110 private static final int SCAN_REQUEST = 0; 1111 private static final String ACTION_START_SCAN = 1112 "com.android.server.WifiManager.action.START_SCAN"; 1113 1114 private static final int PNO_START_REQUEST = 0; 1115 private static final String ACTION_START_PNO = 1116 "com.android.server.WifiManager.action.START_PNO"; 1117 1118 /** 1119 * Keep track of whether WIFI is running. 1120 */ 1121 private boolean mIsRunning = false; 1122 1123 /** 1124 * Keep track of whether we last told the battery stats we had started. 1125 */ 1126 private boolean mReportedRunning = false; 1127 1128 /** 1129 * Most recently set source of starting WIFI. 1130 */ 1131 private final WorkSource mRunningWifiUids = new WorkSource(); 1132 1133 /** 1134 * The last reported UIDs that were responsible for starting WIFI. 1135 */ 1136 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1137 1138 private final IBatteryStats mBatteryStats; 1139 1140 private String mTcpBufferSizes = null; 1141 1142 // Used for debug and stats gathering 1143 private static int sScanAlarmIntentCount = 0; 1144 1145 private static final int sFrameworkMinScanIntervalSaneValue = 10000; 1146 1147 private boolean mPnoEnabled; 1148 private boolean mLazyRoamEnabled; 1149 private long mGScanStartTimeMilli; 1150 private long mGScanPeriodMilli; 1151 1152 private FrameworkFacade mFacade; 1153 1154 public WifiStateMachine(Context context, WifiTrafficPoller trafficPoller, 1155 FrameworkFacade facade, WifiMetrics wifiMetrics, 1156 UserManager userManager) { 1157 super("WifiStateMachine"); 1158 mWifiMetrics = wifiMetrics; 1159 mContext = context; 1160 mFacade = facade; 1161 mUserManager = userManager; 1162 mWifiNative = WifiNative.getWlanNativeInterface(); 1163 1164 // TODO refactor WifiNative use of context out into it's own class 1165 mWifiNative.initContext(mContext); 1166 mInterfaceName = mWifiNative.getInterfaceName(); 1167 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1168 mBatteryStats = IBatteryStats.Stub.asInterface(mFacade.getService( 1169 BatteryStats.SERVICE_NAME)); 1170 1171 IBinder b = mFacade.getService(Context.NETWORKMANAGEMENT_SERVICE); 1172 mNwService = INetworkManagementService.Stub.asInterface(b); 1173 1174 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1175 PackageManager.FEATURE_WIFI_DIRECT); 1176 1177 mWifiConfigStore = new WifiConfigStore(context, this, mWifiNative, facade, 1178 mClock, userManager); 1179 1180 mWifiMonitor = WifiMonitor.getInstance(); 1181 1182 boolean enableFirmwareLogs = mContext.getResources().getBoolean( 1183 R.bool.config_wifi_enable_wifi_firmware_debugging); 1184 1185 if (enableFirmwareLogs) { 1186 mWifiLogger = facade.makeRealLogger(this, mWifiNative); 1187 } else { 1188 mWifiLogger = facade.makeBaseLogger(); 1189 } 1190 1191 mWifiInfo = new WifiInfo(); 1192 mWifiQualifiedNetworkSelector = new WifiQualifiedNetworkSelector(mWifiConfigStore, mContext, 1193 mWifiInfo, mClock); 1194 mSupplicantStateTracker = mFacade.makeSupplicantStateTracker( 1195 context, this, mWifiConfigStore, getHandler()); 1196 1197 mLinkProperties = new LinkProperties(); 1198 1199 IBinder s1 = mFacade.getService(Context.WIFI_P2P_SERVICE); 1200 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1201 1202 mNetworkInfo.setIsAvailable(false); 1203 mLastBssid = null; 1204 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1205 mLastSignalLevel = -1; 1206 1207 mIpManager = mFacade.makeIpManager(mContext, mInterfaceName, new IpManagerCallback()); 1208 1209 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1210 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1211 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1212 1213 // Make sure the interval is not configured less than 10 seconds 1214 int period = mContext.getResources().getInteger( 1215 R.integer.config_wifi_framework_scan_interval); 1216 if (period < sFrameworkMinScanIntervalSaneValue) { 1217 period = sFrameworkMinScanIntervalSaneValue; 1218 } 1219 mDefaultFrameworkScanIntervalMs = period; 1220 1221 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1222 R.integer.config_wifi_no_network_periodic_scan_interval); 1223 1224 mBackgroundScanSupported = mContext.getResources().getBoolean( 1225 R.bool.config_wifi_background_scan_support); 1226 1227 mPrimaryDeviceType = mContext.getResources().getString( 1228 R.string.config_wifi_p2p_device_type); 1229 1230 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1231 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1232 1233 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1234 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1235 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1236 } 1237 1238 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1239 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1240 "but there is no default country code!! Resetting ..."); 1241 mRevertCountryCodeOnCellularLoss = false; 1242 } else if (mRevertCountryCodeOnCellularLoss) { 1243 logd("initializing with and will revert to " + mDefaultCountryCode + " on MCC loss"); 1244 } 1245 1246 if (mRevertCountryCodeOnCellularLoss) { 1247 Settings.Global.putString(mContext.getContentResolver(), 1248 Settings.Global.WIFI_COUNTRY_CODE, mDefaultCountryCode); 1249 } 1250 1251 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1252 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1253 1254 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1255 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1256 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1257 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1258 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1259 // TODO - needs to be a bit more dynamic 1260 mDfltNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1261 1262 mContext.registerReceiver( 1263 new BroadcastReceiver() { 1264 @Override 1265 public void onReceive(Context context, Intent intent) { 1266 ArrayList<String> available = intent.getStringArrayListExtra( 1267 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1268 ArrayList<String> active = intent.getStringArrayListExtra( 1269 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1270 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1271 } 1272 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1273 1274 mContext.registerReceiver( 1275 new BroadcastReceiver() { 1276 @Override 1277 public void onReceive(Context context, Intent intent) { 1278 sScanAlarmIntentCount++; // Used for debug only 1279 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1280 if (VDBG) 1281 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1282 } 1283 }, 1284 new IntentFilter(ACTION_START_SCAN)); 1285 1286 mContext.registerReceiver( 1287 new BroadcastReceiver() { 1288 @Override 1289 public void onReceive(Context context, Intent intent) { 1290 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1291 mRestartAutoJoinOffloadCounter, "pno alarm"); 1292 if (DBG) 1293 logd("PNO START ALARM sent"); 1294 } 1295 }, 1296 new IntentFilter(ACTION_START_PNO)); 1297 1298 1299 IntentFilter filter = new IntentFilter(); 1300 filter.addAction(Intent.ACTION_SCREEN_ON); 1301 filter.addAction(Intent.ACTION_SCREEN_OFF); 1302 mContext.registerReceiver( 1303 new BroadcastReceiver() { 1304 @Override 1305 public void onReceive(Context context, Intent intent) { 1306 String action = intent.getAction(); 1307 1308 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1309 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1310 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1311 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1312 } 1313 } 1314 }, filter); 1315 1316 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1317 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1318 new ContentObserver(getHandler()) { 1319 @Override 1320 public void onChange(boolean selfChange) { 1321 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1322 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1323 } 1324 }); 1325 1326 mContext.registerReceiver( 1327 new BroadcastReceiver() { 1328 @Override 1329 public void onReceive(Context context, Intent intent) { 1330 sendMessage(CMD_BOOT_COMPLETED); 1331 } 1332 }, 1333 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1334 1335 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1336 1337 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1338 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1339 1340 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1341 mSuspendWakeLock.setReferenceCounted(false); 1342 1343 mTcpBufferSizes = mContext.getResources().getString( 1344 com.android.internal.R.string.config_wifi_tcp_buffers); 1345 1346 addState(mDefaultState); 1347 addState(mInitialState, mDefaultState); 1348 addState(mSupplicantStartingState, mDefaultState); 1349 addState(mSupplicantStartedState, mDefaultState); 1350 addState(mDriverStartingState, mSupplicantStartedState); 1351 addState(mDriverStartedState, mSupplicantStartedState); 1352 addState(mScanModeState, mDriverStartedState); 1353 addState(mConnectModeState, mDriverStartedState); 1354 addState(mL2ConnectedState, mConnectModeState); 1355 addState(mObtainingIpState, mL2ConnectedState); 1356 addState(mConnectedState, mL2ConnectedState); 1357 addState(mRoamingState, mL2ConnectedState); 1358 addState(mDisconnectingState, mConnectModeState); 1359 addState(mDisconnectedState, mConnectModeState); 1360 addState(mWpsRunningState, mConnectModeState); 1361 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1362 addState(mDriverStoppingState, mSupplicantStartedState); 1363 addState(mDriverStoppedState, mSupplicantStartedState); 1364 addState(mSupplicantStoppingState, mDefaultState); 1365 addState(mSoftApStartingState, mDefaultState); 1366 addState(mSoftApStartedState, mDefaultState); 1367 addState(mTetheringState, mSoftApStartedState); 1368 addState(mTetheredState, mSoftApStartedState); 1369 addState(mUntetheringState, mSoftApStartedState); 1370 1371 setInitialState(mInitialState); 1372 1373 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1374 setLogOnlyTransitions(false); 1375 if (VDBG) setDbg(true); 1376 1377 //start the state machine 1378 start(); 1379 1380 mWifiMonitor.registerHandler(mInterfaceName, CMD_TARGET_BSSID, getHandler()); 1381 mWifiMonitor.registerHandler(mInterfaceName, CMD_ASSOCIATED_BSSID, getHandler()); 1382 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ANQP_DONE_EVENT, getHandler()); 1383 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ASSOCIATION_REJECTION_EVENT, 1384 getHandler()); 1385 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.AUTHENTICATION_FAILURE_EVENT, 1386 getHandler()); 1387 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.DRIVER_HUNG_EVENT, getHandler()); 1388 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_DONE_EVENT, getHandler()); 1389 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_START_EVENT, 1390 getHandler()); 1391 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.HS20_REMEDIATION_EVENT, 1392 getHandler()); 1393 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_CONNECTION_EVENT, 1394 getHandler()); 1395 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_DISCONNECTION_EVENT, 1396 getHandler()); 1397 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.RX_HS20_ANQP_ICON_EVENT, 1398 getHandler()); 1399 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_FAILED_EVENT, getHandler()); 1400 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_RESULTS_EVENT, getHandler()); 1401 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_REENABLED, getHandler()); 1402 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_TEMP_DISABLED, getHandler()); 1403 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_CONNECTION_EVENT, getHandler()); 1404 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_DISCONNECTION_EVENT, 1405 getHandler()); 1406 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT, 1407 getHandler()); 1408 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_IDENTITY, getHandler()); 1409 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_SIM_AUTH, getHandler()); 1410 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_FAIL_EVENT, getHandler()); 1411 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_OVERLAP_EVENT, getHandler()); 1412 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_SUCCESS_EVENT, getHandler()); 1413 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_TIMEOUT_EVENT, getHandler()); 1414 1415 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1416 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1417 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1418 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1419 } 1420 1421 class IpManagerCallback extends IpManager.Callback { 1422 @Override 1423 public boolean usingIpReachabilityMonitor() { 1424 return true; 1425 } 1426 1427 @Override 1428 public void onPreDhcpAction() { 1429 sendMessage(DhcpStateMachine.CMD_PRE_DHCP_ACTION); 1430 } 1431 1432 @Override 1433 public void onPostDhcpAction() { 1434 sendMessage(DhcpStateMachine.CMD_POST_DHCP_ACTION); 1435 } 1436 1437 @Override 1438 public void onNewDhcpResults(DhcpResults dhcpResults) { 1439 if (dhcpResults != null) { 1440 sendMessage(CMD_IPV4_PROVISIONING_SUCCESS, dhcpResults); 1441 } else { 1442 sendMessage(CMD_IPV4_PROVISIONING_FAILURE); 1443 } 1444 } 1445 1446 @Override 1447 public void onProvisioningSuccess(LinkProperties newLp) { 1448 sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); 1449 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 1450 } 1451 1452 @Override 1453 public void onProvisioningFailure(LinkProperties newLp) { 1454 sendMessage(CMD_IP_CONFIGURATION_LOST); 1455 } 1456 1457 @Override 1458 public void onLinkPropertiesChange(LinkProperties newLp) { 1459 sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); 1460 } 1461 1462 @Override 1463 public void onReachabilityLost(String logMsg) { 1464 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 1465 } 1466 } 1467 1468 private void stopIpManager() { 1469 /* Restore power save and suspend optimizations */ 1470 handlePostDhcpSetup(); 1471 mIpManager.stop(); 1472 } 1473 1474 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1475 Intent intent = new Intent(action, null); 1476 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1477 intent.setPackage("android"); 1478 return mFacade.getBroadcast(mContext, requestCode, intent, 0); 1479 } 1480 1481 private int mVerboseLoggingLevel = 0; 1482 1483 int getVerboseLoggingLevel() { 1484 return mVerboseLoggingLevel; 1485 } 1486 1487 void enableVerboseLogging(int verbose) { 1488 mVerboseLoggingLevel = verbose; 1489 if (verbose > 0) { 1490 DBG = true; 1491 VDBG = true; 1492 PDBG = true; 1493 mLogMessages = true; 1494 mWifiNative.setSupplicantLogLevel("DEBUG"); 1495 } else { 1496 DBG = false; 1497 VDBG = false; 1498 PDBG = false; 1499 mLogMessages = false; 1500 mWifiNative.setSupplicantLogLevel("INFO"); 1501 } 1502 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1503 mWifiMonitor.enableVerboseLogging(verbose); 1504 mWifiNative.enableVerboseLogging(verbose); 1505 mWifiConfigStore.enableVerboseLogging(verbose); 1506 mSupplicantStateTracker.enableVerboseLogging(verbose); 1507 mWifiQualifiedNetworkSelector.enableVerboseLogging(verbose); 1508 } 1509 1510 public void setHalBasedAutojoinOffload(int enabled) { 1511 // Shoult be used for debug only, triggered form developper settings 1512 // enabling HAl based PNO dynamically is not safe and not a normal operation 1513 mHalBasedPnoEnableInDevSettings = enabled > 0; 1514 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1515 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1516 sendMessage(CMD_DISCONNECT); 1517 } 1518 1519 int getHalBasedAutojoinOffload() { 1520 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1521 } 1522 1523 boolean useHalBasedAutoJoinOffload() { 1524 // all three settings need to be true: 1525 // - developper settings switch 1526 // - driver support 1527 // - config option 1528 return mHalBasedPnoEnableInDevSettings 1529 && mHalBasedPnoDriverSupported 1530 && mWifiConfigStore.enableHalBasedPno.get(); 1531 } 1532 1533 boolean allowFullBandScanAndAssociated() { 1534 1535 if (!getEnableAutoJoinWhenAssociated()) { 1536 if (DBG) { 1537 Log.e(TAG, "allowFullBandScanAndAssociated: " 1538 + " enableAutoJoinWhenAssociated : disallow"); 1539 } 1540 return false; 1541 } 1542 1543 if (mWifiInfo.txSuccessRate > 1544 mWifiConfigStore.maxTxPacketForFullScans 1545 || mWifiInfo.rxSuccessRate > 1546 mWifiConfigStore.maxRxPacketForFullScans) { 1547 if (DBG) { 1548 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1549 + mWifiInfo.txSuccessRate + " rx " 1550 + mWifiInfo.rxSuccessRate 1551 + " allow scan with traffic " + getAllowScansWithTraffic()); 1552 } 1553 // Too much traffic at the interface, hence no full band scan 1554 if (getAllowScansWithTraffic() == 0) { 1555 return false; 1556 } 1557 } 1558 1559 if (getCurrentState() != mConnectedState) { 1560 if (DBG) { 1561 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1562 } 1563 return false; 1564 } 1565 1566 return true; 1567 } 1568 1569 long mLastScanPermissionUpdate = 0; 1570 boolean mConnectedModeGScanOffloadStarted = false; 1571 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1572 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1573 // we want to throttle the GScan Stop->Start transition 1574 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1575 void updateAssociatedScanPermission() { 1576 1577 if (useHalBasedAutoJoinOffload()) { 1578 boolean allowed = allowFullBandScanAndAssociated(); 1579 1580 long now = System.currentTimeMillis(); 1581 if (mConnectedModeGScanOffloadStarted && !allowed) { 1582 if (DBG) { 1583 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1584 } 1585 stopPnoOffload(); 1586 stopGScan(" useHalBasedAutoJoinOffload"); 1587 } 1588 if (!mConnectedModeGScanOffloadStarted && allowed) { 1589 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1590 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1591 // to look for 5GHz BSSIDs and better networks 1592 if (DBG) { 1593 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1594 } 1595 startGScanConnectedModeOffload("updatePermission " 1596 + (now - mLastScanPermissionUpdate) + "ms"); 1597 mLastScanPermissionUpdate = now; 1598 } 1599 } 1600 } 1601 } 1602 1603 private int mAggressiveHandover = 0; 1604 1605 int getAggressiveHandover() { 1606 return mAggressiveHandover; 1607 } 1608 1609 void enableAggressiveHandover(int enabled) { 1610 mAggressiveHandover = enabled; 1611 } 1612 1613 public void clearANQPCache() { 1614 mWifiConfigStore.trimANQPCache(true); 1615 } 1616 1617 public void setAllowScansWithTraffic(int enabled) { 1618 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1619 } 1620 1621 public int getAllowScansWithTraffic() { 1622 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1623 } 1624 1625 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1626 boolean old_state = getEnableAutoJoinWhenAssociated(); 1627 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1628 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1629 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1630 null); 1631 } 1632 return true; 1633 } 1634 1635 public boolean getEnableAutoJoinWhenAssociated() { 1636 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1637 } 1638 /* 1639 * 1640 * Framework scan control 1641 */ 1642 1643 private boolean mAlarmEnabled = false; 1644 1645 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1646 1647 private void setScanAlarm(boolean enabled) { 1648 if (PDBG) { 1649 String state; 1650 if (enabled) state = "enabled"; else state = "disabled"; 1651 logd("setScanAlarm " + state 1652 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1653 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1654 } 1655 if (mBackgroundScanSupported == false) { 1656 // Scan alarm is only used for background scans if they are not 1657 // offloaded to the wifi chipset, hence enable the scan alarm 1658 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1659 enabled = true; 1660 } 1661 1662 if (enabled == mAlarmEnabled) return; 1663 if (enabled) { 1664 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1665 /* going to wake up the host processor to look for access points */ 1666 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1667 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1668 mScanIntent); 1669 mAlarmEnabled = true; 1670 } else { 1671 mAlarmManager.cancel(mScanIntent); 1672 mAlarmEnabled = false; 1673 } 1674 } 1675 1676 private void cancelDelayedScan() { 1677 mDelayedScanCounter.incrementAndGet(); 1678 } 1679 1680 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1681 ScanSettings settings, WorkSource workSource) { 1682 1683 if (counter != mDelayedScanCounter.get()) { 1684 return false; 1685 } 1686 if (restart) 1687 startDelayedScan(milli, settings, workSource); 1688 return true; 1689 } 1690 1691 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1692 if (milli <= 0) return; 1693 /** 1694 * The cases where the scan alarm should be run are : 1695 * - DisconnectedState && screenOn => used delayed timer 1696 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1697 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1698 * - ConnectedState && screenOn => used delayed timer 1699 */ 1700 1701 mDelayedScanCounter.incrementAndGet(); 1702 if (mScreenOn && 1703 (getCurrentState() == mDisconnectedState 1704 || getCurrentState() == mConnectedState)) { 1705 Bundle bundle = new Bundle(); 1706 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1707 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1708 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1709 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1710 mDelayedScanCounter.get(), bundle, milli); 1711 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1712 } else if (mBackgroundScanSupported == false 1713 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1714 setScanAlarm(true); 1715 if (DBG) logd("startDelayedScan start scan alarm -> " 1716 + mDelayedScanCounter + " milli " + milli); 1717 } else { 1718 if (DBG) logd("startDelayedScan unhandled -> " 1719 + mDelayedScanCounter + " milli " + milli); 1720 } 1721 } 1722 1723 private boolean setRandomMacOui() { 1724 String oui = mContext.getResources().getString(R.string.config_wifi_random_mac_oui); 1725 if (TextUtils.isEmpty(oui)) { 1726 oui = GOOGLE_OUI; 1727 } 1728 String[] ouiParts = oui.split("-"); 1729 byte[] ouiBytes = new byte[3]; 1730 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1731 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1732 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1733 1734 logd("Setting OUI to " + oui); 1735 return mWifiNative.setScanningMacOui(ouiBytes); 1736 } 1737 1738 /** 1739 * ****************************************************** 1740 * Methods exposed for public use 1741 * ****************************************************** 1742 */ 1743 1744 public Messenger getMessenger() { 1745 return new Messenger(getHandler()); 1746 } 1747 1748 /** 1749 * TODO: doc 1750 */ 1751 public boolean syncPingSupplicant(AsyncChannel channel) { 1752 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1753 boolean result = (resultMsg.arg1 != FAILURE); 1754 resultMsg.recycle(); 1755 return result; 1756 } 1757 1758 /** 1759 * When settings allowing making use of untrusted networks change, trigger a scan 1760 * so as to kick of autojoin. 1761 */ 1762 public void startScanForUntrustedSettingChange() { 1763 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1764 } 1765 1766 /** 1767 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1768 * given to callingUid. 1769 * 1770 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1771 * workSource is specified. 1772 * @param workSource If not null, blame is given to workSource. 1773 * @param settings Scan settings, see {@link ScanSettings}. 1774 */ 1775 public void startScan(int callingUid, int scanCounter, 1776 ScanSettings settings, WorkSource workSource) { 1777 Bundle bundle = new Bundle(); 1778 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1779 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1780 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1781 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1782 } 1783 1784 // called from BroadcastListener 1785 1786 /** 1787 * Start reading new scan data 1788 * Data comes in as: 1789 * "scancount=5\n" 1790 * "nextcount=5\n" 1791 * "apcount=3\n" 1792 * "trunc\n" (optional) 1793 * "bssid=...\n" 1794 * "ssid=...\n" 1795 * "freq=...\n" (in Mhz) 1796 * "level=...\n" 1797 * "dist=...\n" (in cm) 1798 * "distsd=...\n" (standard deviation, in cm) 1799 * "====" 1800 * "bssid=...\n" 1801 * etc 1802 * "====" 1803 * "bssid=...\n" 1804 * etc 1805 * "%%%%" 1806 * "apcount=2\n" 1807 * "bssid=...\n" 1808 * etc 1809 * "%%%% 1810 * etc 1811 * "----" 1812 */ 1813 private final static boolean DEBUG_PARSE = false; 1814 1815 private long mDisconnectedTimeStamp = 0; 1816 1817 public long getDisconnectedTimeMilli() { 1818 if (getCurrentState() == mDisconnectedState 1819 && mDisconnectedTimeStamp != 0) { 1820 long now_ms = System.currentTimeMillis(); 1821 return now_ms - mDisconnectedTimeStamp; 1822 } 1823 return 0; 1824 } 1825 1826 // Keeping track of scan requests 1827 private long lastStartScanTimeStamp = 0; 1828 private long lastScanDuration = 0; 1829 // Last connect attempt is used to prevent scan requests: 1830 // - for a period of 10 seconds after attempting to connect 1831 private long lastConnectAttemptTimestamp = 0; 1832 private Set<Integer> lastScanFreqs = null; 1833 1834 // For debugging, keep track of last message status handling 1835 // TODO, find an equivalent mechanism as part of parent class 1836 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1837 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1838 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1839 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1840 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1841 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1842 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1843 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1844 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1845 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1846 1847 private int messageHandlingStatus = 0; 1848 1849 //TODO: this is used only to track connection attempts, however the link state and packet per 1850 //TODO: second logic should be folded into that 1851 private boolean checkOrDeferScanAllowed(Message msg) { 1852 long now = System.currentTimeMillis(); 1853 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1854 Message dmsg = Message.obtain(msg); 1855 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1856 return false; 1857 } 1858 return true; 1859 } 1860 1861 private int mOnTime = 0; 1862 private int mTxTime = 0; 1863 private int mRxTime = 0; 1864 private int mOnTimeStartScan = 0; 1865 private int mTxTimeStartScan = 0; 1866 private int mRxTimeStartScan = 0; 1867 private int mOnTimeScan = 0; 1868 private int mTxTimeScan = 0; 1869 private int mRxTimeScan = 0; 1870 private int mOnTimeThisScan = 0; 1871 private int mTxTimeThisScan = 0; 1872 private int mRxTimeThisScan = 0; 1873 1874 private int mOnTimeScreenStateChange = 0; 1875 private int mOnTimeAtLastReport = 0; 1876 private long lastOntimeReportTimeStamp = 0; 1877 private long lastScreenStateChangeTimeStamp = 0; 1878 private int mOnTimeLastReport = 0; 1879 private int mTxTimeLastReport = 0; 1880 private int mRxTimeLastReport = 0; 1881 1882 private long lastLinkLayerStatsUpdate = 0; 1883 1884 String reportOnTime() { 1885 long now = System.currentTimeMillis(); 1886 StringBuilder sb = new StringBuilder(); 1887 // Report stats since last report 1888 int on = mOnTime - mOnTimeLastReport; 1889 mOnTimeLastReport = mOnTime; 1890 int tx = mTxTime - mTxTimeLastReport; 1891 mTxTimeLastReport = mTxTime; 1892 int rx = mRxTime - mRxTimeLastReport; 1893 mRxTimeLastReport = mRxTime; 1894 int period = (int) (now - lastOntimeReportTimeStamp); 1895 lastOntimeReportTimeStamp = now; 1896 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1897 // Report stats since Screen State Changed 1898 on = mOnTime - mOnTimeScreenStateChange; 1899 period = (int) (now - lastScreenStateChangeTimeStamp); 1900 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1901 return sb.toString(); 1902 } 1903 1904 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1905 WifiLinkLayerStats stats = null; 1906 if (mWifiLinkLayerStatsSupported > 0) { 1907 String name = "wlan0"; 1908 stats = mWifiNative.getWifiLinkLayerStats(name); 1909 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1910 mWifiLinkLayerStatsSupported -= 1; 1911 } else if (stats != null) { 1912 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1913 mOnTime = stats.on_time; 1914 mTxTime = stats.tx_time; 1915 mRxTime = stats.rx_time; 1916 mRunningBeaconCount = stats.beacon_rx; 1917 } 1918 } 1919 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1920 long mTxPkts = mFacade.getTxPackets(mInterfaceName); 1921 long mRxPkts = mFacade.getRxPackets(mInterfaceName); 1922 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1923 } else { 1924 mWifiInfo.updatePacketRates(stats); 1925 } 1926 if (useHalBasedAutoJoinOffload()) { 1927 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1928 } 1929 return stats; 1930 } 1931 1932 void startRadioScanStats() { 1933 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1934 if (stats != null) { 1935 mOnTimeStartScan = stats.on_time; 1936 mTxTimeStartScan = stats.tx_time; 1937 mRxTimeStartScan = stats.rx_time; 1938 mOnTime = stats.on_time; 1939 mTxTime = stats.tx_time; 1940 mRxTime = stats.rx_time; 1941 } 1942 } 1943 1944 void closeRadioScanStats() { 1945 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1946 if (stats != null) { 1947 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1948 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1949 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1950 mOnTimeScan += mOnTimeThisScan; 1951 mTxTimeScan += mTxTimeThisScan; 1952 mRxTimeScan += mRxTimeThisScan; 1953 } 1954 } 1955 1956 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1957 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1958 if (ret != 0) { 1959 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1960 "): hardware error " + ret); 1961 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1962 } else { 1963 return ConnectivityManager.PacketKeepalive.SUCCESS; 1964 } 1965 } 1966 1967 int stopWifiIPPacketOffload(int slot) { 1968 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1969 if (ret != 0) { 1970 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1971 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1972 } else { 1973 return ConnectivityManager.PacketKeepalive.SUCCESS; 1974 } 1975 } 1976 1977 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1978 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1979 } 1980 1981 int stopRssiMonitoringOffload() { 1982 return mWifiNative.stopRssiMonitoring(); 1983 } 1984 1985 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1986 private void noteScanStart(int callingUid, WorkSource workSource) { 1987 if (lastStartScanTimeStamp != 0) { 1988 noteScanEnd(); 1989 } 1990 long now = System.currentTimeMillis(); 1991 lastStartScanTimeStamp = now; 1992 lastScanDuration = 0; 1993 if (DBG) { 1994 String ts = String.format("[%,d ms]", now); 1995 if (workSource != null) { 1996 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1997 + " uid " + Integer.toString(callingUid)); 1998 } else { 1999 if (DBG) logd(ts + " noteScanstart no scan source" 2000 + " uid " + Integer.toString(callingUid)); 2001 } 2002 } 2003 startRadioScanStats(); 2004 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 2005 && callingUid != SCAN_ALARM_SOURCE) 2006 || workSource != null)) { 2007 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 2008 2009 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 2010 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 2011 mScanWorkSource = new WorkSource(Process.WIFI_UID); 2012 } 2013 2014 try { 2015 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 2016 } catch (RemoteException e) { 2017 log(e.toString()); 2018 } 2019 } 2020 } 2021 2022 private void noteScanEnd() { 2023 closeRadioScanStats(); 2024 long now = System.currentTimeMillis(); 2025 if (lastStartScanTimeStamp != 0) { 2026 lastScanDuration = now - lastStartScanTimeStamp; 2027 } 2028 lastStartScanTimeStamp = 0; 2029 if (DBG) { 2030 String ts = String.format("[%,d ms]", now); 2031 if (mScanWorkSource != null) 2032 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 2033 + " onTime=" + mOnTimeThisScan); 2034 else 2035 logd(ts + " noteScanEnd no scan source" 2036 + " onTime=" + mOnTimeThisScan); 2037 } 2038 if (mScanWorkSource != null) { 2039 try { 2040 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 2041 } catch (RemoteException e) { 2042 log(e.toString()); 2043 } finally { 2044 mScanWorkSource = null; 2045 } 2046 } 2047 } 2048 2049 private void handleScanRequest(Message message) { 2050 ScanSettings settings = null; 2051 WorkSource workSource = null; 2052 2053 // unbundle parameters 2054 Bundle bundle = (Bundle) message.obj; 2055 2056 if (bundle != null) { 2057 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 2058 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 2059 } 2060 2061 Set<Integer> freqs = null; 2062 if (settings != null && settings.channelSet != null) { 2063 freqs = new HashSet<Integer>(); 2064 for (WifiChannel channel : settings.channelSet) { 2065 freqs.add(channel.freqMHz); 2066 } 2067 } 2068 2069 // call wifi native to start the scan 2070 if (startScanNative(freqs)) { 2071 // only count battery consumption if scan request is accepted 2072 noteScanStart(message.arg1, workSource); 2073 // a full scan covers everything, clearing scan request buffer 2074 if (freqs == null) 2075 mBufferedScanMsg.clear(); 2076 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 2077 if (workSource != null) { 2078 // External worksource was passed along the scan request, 2079 // hence always send a broadcast 2080 mSendScanResultsBroadcast = true; 2081 } 2082 return; 2083 } 2084 2085 // if reach here, scan request is rejected 2086 2087 if (!mIsScanOngoing) { 2088 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2089 2090 // discard this request and pop up the next one 2091 if (mBufferedScanMsg.size() > 0) { 2092 sendMessage(mBufferedScanMsg.remove()); 2093 } 2094 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2095 } else if (!mIsFullScanOngoing) { 2096 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2097 // buffer the scan request to make sure specified channels will be scanned eventually 2098 if (freqs == null) 2099 mBufferedScanMsg.clear(); 2100 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2101 Message msg = obtainMessage(CMD_START_SCAN, 2102 message.arg1, message.arg2, bundle); 2103 mBufferedScanMsg.add(msg); 2104 } else { 2105 // if too many requests in buffer, combine them into a single full scan 2106 bundle = new Bundle(); 2107 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2108 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2109 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2110 mBufferedScanMsg.clear(); 2111 mBufferedScanMsg.add(msg); 2112 } 2113 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2114 } else { 2115 // mIsScanOngoing and mIsFullScanOngoing 2116 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2117 } 2118 } 2119 2120 2121 /** 2122 * return true iff scan request is accepted 2123 */ 2124 private boolean startScanNative(Set<Integer> freqs) { 2125 if (mWifiNative.scan(freqs)) { 2126 mIsScanOngoing = true; 2127 mIsFullScanOngoing = (freqs == null); 2128 lastScanFreqs = freqs; 2129 return true; 2130 } 2131 return false; 2132 } 2133 2134 /** 2135 * TODO: doc 2136 */ 2137 public void setSupplicantRunning(boolean enable) { 2138 if (enable) { 2139 sendMessage(CMD_START_SUPPLICANT); 2140 } else { 2141 sendMessage(CMD_STOP_SUPPLICANT); 2142 } 2143 } 2144 2145 /** 2146 * TODO: doc 2147 */ 2148 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2149 if (enable) { 2150 sendMessage(CMD_START_AP, wifiConfig); 2151 } else { 2152 sendMessage(CMD_STOP_AP); 2153 } 2154 } 2155 2156 public void setWifiApConfiguration(WifiConfiguration config) { 2157 mWifiApConfigStore.setApConfiguration(config); 2158 } 2159 2160 public WifiConfiguration syncGetWifiApConfiguration() { 2161 return mWifiApConfigStore.getApConfiguration(); 2162 } 2163 2164 /** 2165 * TODO: doc 2166 */ 2167 public int syncGetWifiState() { 2168 return mWifiState.get(); 2169 } 2170 2171 /** 2172 * TODO: doc 2173 */ 2174 public String syncGetWifiStateByName() { 2175 switch (mWifiState.get()) { 2176 case WIFI_STATE_DISABLING: 2177 return "disabling"; 2178 case WIFI_STATE_DISABLED: 2179 return "disabled"; 2180 case WIFI_STATE_ENABLING: 2181 return "enabling"; 2182 case WIFI_STATE_ENABLED: 2183 return "enabled"; 2184 case WIFI_STATE_UNKNOWN: 2185 return "unknown state"; 2186 default: 2187 return "[invalid state]"; 2188 } 2189 } 2190 2191 /** 2192 * TODO: doc 2193 */ 2194 public int syncGetWifiApState() { 2195 return mWifiApState.get(); 2196 } 2197 2198 /** 2199 * TODO: doc 2200 */ 2201 public String syncGetWifiApStateByName() { 2202 switch (mWifiApState.get()) { 2203 case WIFI_AP_STATE_DISABLING: 2204 return "disabling"; 2205 case WIFI_AP_STATE_DISABLED: 2206 return "disabled"; 2207 case WIFI_AP_STATE_ENABLING: 2208 return "enabling"; 2209 case WIFI_AP_STATE_ENABLED: 2210 return "enabled"; 2211 case WIFI_AP_STATE_FAILED: 2212 return "failed"; 2213 default: 2214 return "[invalid state]"; 2215 } 2216 } 2217 2218 public boolean isConnected() { 2219 return getCurrentState() == mConnectedState; 2220 } 2221 2222 public boolean isDisconnected() { 2223 return getCurrentState() == mDisconnectedState; 2224 } 2225 2226 public boolean isSupplicantTransientState() { 2227 SupplicantState SupplicantState = mWifiInfo.getSupplicantState(); 2228 if (SupplicantState == SupplicantState.ASSOCIATING 2229 || SupplicantState == SupplicantState.AUTHENTICATING 2230 || SupplicantState == SupplicantState.FOUR_WAY_HANDSHAKE 2231 || SupplicantState == SupplicantState.GROUP_HANDSHAKE) { 2232 2233 if (DBG) { 2234 Log.d(TAG, "Supplicant is under transient state: " + SupplicantState); 2235 } 2236 return true; 2237 } else { 2238 if (DBG) { 2239 Log.d(TAG, "Supplicant is under steady state: " + SupplicantState); 2240 } 2241 } 2242 2243 return false; 2244 } 2245 2246 /** 2247 * Get status information for the current connection, if any. 2248 * 2249 * @return a {@link WifiInfo} object containing information about the current connection 2250 */ 2251 public WifiInfo syncRequestConnectionInfo() { 2252 return getWiFiInfoForUid(Binder.getCallingUid()); 2253 } 2254 2255 public WifiInfo getWifiInfo() { 2256 return mWifiInfo; 2257 } 2258 2259 public DhcpResults syncGetDhcpResults() { 2260 synchronized (mDhcpResultsLock) { 2261 return new DhcpResults(mDhcpResults); 2262 } 2263 } 2264 2265 /** 2266 * TODO: doc 2267 */ 2268 public void setDriverStart(boolean enable) { 2269 if (enable) { 2270 sendMessage(CMD_START_DRIVER); 2271 } else { 2272 sendMessage(CMD_STOP_DRIVER); 2273 } 2274 } 2275 2276 /** 2277 * TODO: doc 2278 */ 2279 public void setOperationalMode(int mode) { 2280 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2281 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2282 } 2283 2284 /** 2285 * TODO: doc 2286 */ 2287 public List<ScanResult> syncGetScanResultsList() { 2288 synchronized (mScanResultCache) { 2289 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2290 for (ScanDetail result : mScanResults) { 2291 scanList.add(new ScanResult(result.getScanResult())); 2292 } 2293 return scanList; 2294 } 2295 } 2296 2297 public int syncAddPasspointManagementObject(AsyncChannel channel, String managementObject) { 2298 Message resultMsg = 2299 channel.sendMessageSynchronously(CMD_ADD_PASSPOINT_MO, managementObject); 2300 int result = resultMsg.arg1; 2301 resultMsg.recycle(); 2302 return result; 2303 } 2304 2305 public int syncModifyPasspointManagementObject(AsyncChannel channel, String fqdn, 2306 List<PasspointManagementObjectDefinition> 2307 managementObjectDefinitions) { 2308 Bundle bundle = new Bundle(); 2309 bundle.putString("FQDN", fqdn); 2310 bundle.putParcelableList("MOS", managementObjectDefinitions); 2311 Message resultMsg = channel.sendMessageSynchronously(CMD_MODIFY_PASSPOINT_MO, bundle); 2312 int result = resultMsg.arg1; 2313 resultMsg.recycle(); 2314 return result; 2315 } 2316 2317 public boolean syncQueryPasspointIcon(AsyncChannel channel, long bssid, String fileName) { 2318 Bundle bundle = new Bundle(); 2319 bundle.putLong("BSSID", bssid); 2320 bundle.putString("FILENAME", fileName); 2321 Message resultMsg = channel.sendMessageSynchronously(CMD_QUERY_OSU_ICON, bundle); 2322 int result = resultMsg.arg1; 2323 resultMsg.recycle(); 2324 return result == 1; 2325 } 2326 2327 public int matchProviderWithCurrentNetwork(AsyncChannel channel, String fqdn) { 2328 Message resultMsg = channel.sendMessageSynchronously(CMD_MATCH_PROVIDER_NETWORK, fqdn); 2329 int result = resultMsg.arg1; 2330 resultMsg.recycle(); 2331 return result; 2332 } 2333 2334 /** 2335 * Deauthenticate and set the re-authentication hold off time for the current network 2336 * @param holdoff hold off time in milliseconds 2337 * @param ess set if the hold off pertains to an ESS rather than a BSS 2338 */ 2339 public void deauthenticateNetwork(AsyncChannel channel, long holdoff, boolean ess) { 2340 // TODO: This needs an implementation 2341 } 2342 2343 public void disableEphemeralNetwork(String SSID) { 2344 if (SSID != null) { 2345 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2346 } 2347 } 2348 2349 /** 2350 * Get unsynchronized pointer to scan result list 2351 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2352 */ 2353 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2354 return mScanResults; 2355 } 2356 2357 /** 2358 * Disconnect from Access Point 2359 */ 2360 public void disconnectCommand() { 2361 sendMessage(CMD_DISCONNECT); 2362 } 2363 2364 public void disconnectCommand(int uid, int reason) { 2365 sendMessage(CMD_DISCONNECT, uid, reason); 2366 } 2367 2368 /** 2369 * Initiate a reconnection to AP 2370 */ 2371 public void reconnectCommand() { 2372 sendMessage(CMD_RECONNECT); 2373 } 2374 2375 /** 2376 * Initiate a re-association to AP 2377 */ 2378 public void reassociateCommand() { 2379 sendMessage(CMD_REASSOCIATE); 2380 } 2381 2382 /** 2383 * Reload networks and then reconnect; helps load correct data for TLS networks 2384 */ 2385 2386 public void reloadTlsNetworksAndReconnect() { 2387 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2388 } 2389 2390 /** 2391 * Add a network synchronously 2392 * 2393 * @return network id of the new network 2394 */ 2395 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2396 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2397 int result = resultMsg.arg1; 2398 resultMsg.recycle(); 2399 return result; 2400 } 2401 2402 /** 2403 * Get configured networks synchronously 2404 * 2405 * @param channel 2406 * @return 2407 */ 2408 2409 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2410 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2411 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2412 resultMsg.recycle(); 2413 return result; 2414 } 2415 2416 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2417 Message resultMsg = channel.sendMessageSynchronously( 2418 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2419 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2420 resultMsg.recycle(); 2421 return result; 2422 } 2423 2424 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2425 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2426 return (WifiConfiguration) resultMsg.obj; 2427 } 2428 2429 /** 2430 * Get connection statistics synchronously 2431 * 2432 * @param channel 2433 * @return 2434 */ 2435 2436 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2437 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2438 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2439 resultMsg.recycle(); 2440 return result; 2441 } 2442 2443 /** 2444 * Get adaptors synchronously 2445 */ 2446 2447 public int syncGetSupportedFeatures(AsyncChannel channel) { 2448 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2449 int supportedFeatureSet = resultMsg.arg1; 2450 resultMsg.recycle(); 2451 return supportedFeatureSet; 2452 } 2453 2454 /** 2455 * Get link layers stats for adapter synchronously 2456 */ 2457 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2458 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2459 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2460 resultMsg.recycle(); 2461 return result; 2462 } 2463 2464 /** 2465 * Delete a network 2466 * 2467 * @param networkId id of the network to be removed 2468 */ 2469 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2470 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2471 boolean result = (resultMsg.arg1 != FAILURE); 2472 resultMsg.recycle(); 2473 return result; 2474 } 2475 2476 /** 2477 * Enable a network 2478 * 2479 * @param netId network id of the network 2480 * @param disableOthers true, if all other networks have to be disabled 2481 * @return {@code true} if the operation succeeds, {@code false} otherwise 2482 */ 2483 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2484 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2485 disableOthers ? 1 : 0); 2486 boolean result = (resultMsg.arg1 != FAILURE); 2487 resultMsg.recycle(); 2488 return result; 2489 } 2490 2491 /** 2492 * Disable a network 2493 * 2494 * @param netId network id of the network 2495 * @return {@code true} if the operation succeeds, {@code false} otherwise 2496 */ 2497 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2498 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2499 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2500 resultMsg.recycle(); 2501 return result; 2502 } 2503 2504 /** 2505 * Retrieves a WPS-NFC configuration token for the specified network 2506 * 2507 * @return a hex string representation of the WPS-NFC configuration token 2508 */ 2509 public String syncGetWpsNfcConfigurationToken(int netId) { 2510 return mWifiNative.getNfcWpsConfigurationToken(netId); 2511 } 2512 2513 void enableBackgroundScan(boolean enable) { 2514 if (enable) { 2515 mWifiConfigStore.enableAllNetworks(); 2516 } 2517 List<WifiNative.PnoNetworkPriority> pnoList = 2518 mWifiConfigStore.retrievePnoNetworkPriorityList(enable); 2519 boolean ret = mWifiNative.enableBackgroundScan(enable, pnoList); 2520 if (ret) { 2521 mLegacyPnoEnabled = enable; 2522 } else { 2523 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2524 } 2525 } 2526 2527 /** 2528 * Blacklist a BSSID. This will avoid the AP if there are 2529 * alternate APs to connect 2530 * 2531 * @param bssid BSSID of the network 2532 */ 2533 public void addToBlacklist(String bssid) { 2534 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2535 } 2536 2537 /** 2538 * Clear the blacklist list 2539 */ 2540 public void clearBlacklist() { 2541 sendMessage(CMD_CLEAR_BLACKLIST); 2542 } 2543 2544 public void enableRssiPolling(boolean enabled) { 2545 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2546 } 2547 2548 public void enableAllNetworks() { 2549 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2550 } 2551 2552 /** 2553 * Start filtering Multicast v4 packets 2554 */ 2555 public void startFilteringMulticastV4Packets() { 2556 mFilteringMulticastV4Packets.set(true); 2557 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2558 } 2559 2560 /** 2561 * Stop filtering Multicast v4 packets 2562 */ 2563 public void stopFilteringMulticastV4Packets() { 2564 mFilteringMulticastV4Packets.set(false); 2565 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2566 } 2567 2568 /** 2569 * Start filtering Multicast v4 packets 2570 */ 2571 public void startFilteringMulticastV6Packets() { 2572 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2573 } 2574 2575 /** 2576 * Stop filtering Multicast v4 packets 2577 */ 2578 public void stopFilteringMulticastV6Packets() { 2579 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2580 } 2581 2582 /** 2583 * Set high performance mode of operation. 2584 * Enabling would set active power mode and disable suspend optimizations; 2585 * disabling would set auto power mode and enable suspend optimizations 2586 * 2587 * @param enable true if enable, false otherwise 2588 */ 2589 public void setHighPerfModeEnabled(boolean enable) { 2590 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2591 } 2592 2593 /** 2594 * Set the country code 2595 * 2596 * @param countryCode following ISO 3166 format 2597 * @param persist {@code true} if the setting should be remembered. 2598 */ 2599 public synchronized void setCountryCode(String countryCode, boolean persist) { 2600 // If it's a good country code, apply after the current 2601 // wifi connection is terminated; ignore resetting of code 2602 // for now (it is unclear what the chipset should do when 2603 // country code is reset) 2604 2605 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2606 // else only when the new country code is different from the current one to set 2607 2608 if (TextUtils.isEmpty(countryCode)) { 2609 if (DBG) log("Ignoring resetting of country code"); 2610 } else { 2611 int countryCodeSequence = mCountryCodeSequence.get(); 2612 String currentCountryCode = getCurrentCountryCode(); 2613 if (countryCodeSequence == 0 2614 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2615 2616 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2617 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2618 countryCode); 2619 } 2620 } 2621 } 2622 2623 /** 2624 * reset the country code to default 2625 */ 2626 public synchronized void resetCountryCode() { 2627 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2628 logd("resetting country code to " + mDefaultCountryCode); 2629 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2630 } 2631 } 2632 2633 /** 2634 * reset cached SIM credential data 2635 */ 2636 public synchronized void resetSimAuthNetworks() { 2637 sendMessage(CMD_RESET_SIM_NETWORKS); 2638 } 2639 2640 2641 /** 2642 * Get Network object of current wifi network 2643 * @return Network object of current wifi network 2644 */ 2645 public Network getCurrentNetwork() { 2646 if (mNetworkAgent != null) { 2647 return new Network(mNetworkAgent.netId); 2648 } else { 2649 return null; 2650 } 2651 } 2652 2653 /** 2654 * Get the country code 2655 * 2656 * @return countryCode following ISO 3166 format 2657 */ 2658 public String getCurrentCountryCode() { 2659 return mFacade.getStringSetting(mContext, Settings.Global.WIFI_COUNTRY_CODE); 2660 } 2661 2662 /** 2663 * Set the operational frequency band 2664 * 2665 * @param band 2666 * @param persist {@code true} if the setting should be remembered. 2667 */ 2668 public void setFrequencyBand(int band, boolean persist) { 2669 if (persist) { 2670 Settings.Global.putInt(mContext.getContentResolver(), 2671 Settings.Global.WIFI_FREQUENCY_BAND, 2672 band); 2673 } 2674 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2675 } 2676 2677 /** 2678 * Enable TDLS for a specific MAC address 2679 */ 2680 public void enableTdls(String remoteMacAddress, boolean enable) { 2681 int enabler = enable ? 1 : 0; 2682 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2683 } 2684 2685 /** 2686 * Returns the operational frequency band 2687 */ 2688 public int getFrequencyBand() { 2689 return mFrequencyBand.get(); 2690 } 2691 2692 /** 2693 * Returns the wifi configuration file 2694 */ 2695 public String getConfigFile() { 2696 return mWifiConfigStore.getConfigFile(); 2697 } 2698 2699 /** 2700 * Send a message indicating bluetooth adapter connection state changed 2701 */ 2702 public void sendBluetoothAdapterStateChange(int state) { 2703 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2704 } 2705 2706 /** 2707 * Send a message indicating a package has been uninstalled. 2708 */ 2709 public void removeAppConfigs(String packageName, int uid) { 2710 // Build partial AppInfo manually - package may not exist in database any more 2711 ApplicationInfo ai = new ApplicationInfo(); 2712 ai.packageName = packageName; 2713 ai.uid = uid; 2714 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2715 } 2716 2717 /** 2718 * Send a message indicating a user has been removed. 2719 */ 2720 public void removeUserConfigs(int userId) { 2721 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2722 } 2723 2724 /** 2725 * Save configuration on supplicant 2726 * 2727 * @return {@code true} if the operation succeeds, {@code false} otherwise 2728 * <p/> 2729 * TODO: deprecate this 2730 */ 2731 public boolean syncSaveConfig(AsyncChannel channel) { 2732 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2733 boolean result = (resultMsg.arg1 != FAILURE); 2734 resultMsg.recycle(); 2735 return result; 2736 } 2737 2738 public void updateBatteryWorkSource(WorkSource newSource) { 2739 synchronized (mRunningWifiUids) { 2740 try { 2741 if (newSource != null) { 2742 mRunningWifiUids.set(newSource); 2743 } 2744 if (mIsRunning) { 2745 if (mReportedRunning) { 2746 // If the work source has changed since last time, need 2747 // to remove old work from battery stats. 2748 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2749 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2750 mRunningWifiUids); 2751 mLastRunningWifiUids.set(mRunningWifiUids); 2752 } 2753 } else { 2754 // Now being started, report it. 2755 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2756 mLastRunningWifiUids.set(mRunningWifiUids); 2757 mReportedRunning = true; 2758 } 2759 } else { 2760 if (mReportedRunning) { 2761 // Last reported we were running, time to stop. 2762 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2763 mLastRunningWifiUids.clear(); 2764 mReportedRunning = false; 2765 } 2766 } 2767 mWakeLock.setWorkSource(newSource); 2768 } catch (RemoteException ignore) { 2769 } 2770 } 2771 } 2772 2773 @Override 2774 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2775 super.dump(fd, pw, args); 2776 mSupplicantStateTracker.dump(fd, pw, args); 2777 pw.println("mLinkProperties " + mLinkProperties); 2778 pw.println("mWifiInfo " + mWifiInfo); 2779 pw.println("mDhcpResults " + mDhcpResults); 2780 pw.println("mNetworkInfo " + mNetworkInfo); 2781 pw.println("mLastSignalLevel " + mLastSignalLevel); 2782 pw.println("mLastBssid " + mLastBssid); 2783 pw.println("mLastNetworkId " + mLastNetworkId); 2784 pw.println("mOperationalMode " + mOperationalMode); 2785 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2786 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2787 pw.println("Supplicant status " + mWifiNative.status(true)); 2788 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2789 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2790 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2791 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2792 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2793 pw.println("SSID whitelist :" ); 2794 for (int i=0; i < mWhiteListedSsids.length; i++) { 2795 pw.println(" " + mWhiteListedSsids[i]); 2796 } 2797 } 2798 if (mNetworkFactory != null) { 2799 mNetworkFactory.dump(fd, pw, args); 2800 } else { 2801 pw.println("mNetworkFactory is not initialized"); 2802 } 2803 2804 if (mUntrustedNetworkFactory != null) { 2805 mUntrustedNetworkFactory.dump(fd, pw, args); 2806 } else { 2807 pw.println("mUntrustedNetworkFactory is not initialized"); 2808 } 2809 pw.println(); 2810 updateWifiMetrics(); 2811 mWifiMetrics.dump(fd, pw, args); 2812 pw.println(); 2813 mNetworkFactory.dump(fd, pw, args); 2814 mUntrustedNetworkFactory.dump(fd, pw, args); 2815 pw.println(); 2816 2817 mWifiConfigStore.dump(fd, pw, args); 2818 pw.println(); 2819 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2820 mWifiLogger.dump(fd, pw, args); 2821 mWifiQualifiedNetworkSelector.dump(fd, pw, args); 2822 } 2823 2824 public void handleUserSwitch(int userId) { 2825 sendMessage(CMD_USER_SWITCH, userId); 2826 } 2827 2828 /** 2829 * ****************************************************** 2830 * Internal private functions 2831 * ****************************************************** 2832 */ 2833 2834 private void logStateAndMessage(Message message, State state) { 2835 messageHandlingStatus = 0; 2836 if (mLogMessages) { 2837 logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); 2838 } 2839 } 2840 2841 /** 2842 * helper, prints the milli time since boot wi and w/o suspended time 2843 */ 2844 String printTime() { 2845 StringBuilder sb = new StringBuilder(); 2846 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2847 sb.append("/").append(SystemClock.elapsedRealtime()); 2848 return sb.toString(); 2849 } 2850 2851 /** 2852 * Return the additional string to be logged by LogRec, default 2853 * 2854 * @param msg that was processed 2855 * @return information to be logged as a String 2856 */ 2857 protected String getLogRecString(Message msg) { 2858 WifiConfiguration config; 2859 Long now; 2860 String report; 2861 String key; 2862 StringBuilder sb = new StringBuilder(); 2863 if (mScreenOn) { 2864 sb.append("!"); 2865 } 2866 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2867 sb.append("(").append(messageHandlingStatus).append(")"); 2868 } 2869 sb.append(smToString(msg)); 2870 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2871 sb.append(" uid=" + msg.sendingUid); 2872 } 2873 sb.append(" ").append(printTime()); 2874 switch (msg.what) { 2875 case CMD_STARTED_GSCAN_DBG: 2876 case CMD_STARTED_PNO_DBG: 2877 sb.append(" "); 2878 sb.append(Integer.toString(msg.arg1)); 2879 sb.append(" "); 2880 sb.append(Integer.toString(msg.arg2)); 2881 if (msg.obj != null) { 2882 sb.append(" " + (String)msg.obj); 2883 } 2884 break; 2885 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2886 sb.append(" "); 2887 sb.append(Integer.toString(msg.arg1)); 2888 sb.append(" "); 2889 sb.append(Integer.toString(msg.arg2)); 2890 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2891 if (msg.obj != null) { 2892 sb.append(" " + (String)msg.obj); 2893 } 2894 break; 2895 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2896 sb.append(" "); 2897 sb.append(Integer.toString(msg.arg1)); 2898 sb.append(" "); 2899 sb.append(Integer.toString(msg.arg2)); 2900 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2901 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2902 sb.append(" autojoinAllowed="); 2903 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2904 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2905 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2906 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2907 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2908 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2909 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2910 break; 2911 case CMD_PNO_NETWORK_FOUND: 2912 sb.append(" "); 2913 sb.append(Integer.toString(msg.arg1)); 2914 sb.append(" "); 2915 sb.append(Integer.toString(msg.arg2)); 2916 if (msg.obj != null) { 2917 ScanResult[] results = (ScanResult[])msg.obj; 2918 for (int i = 0; i < results.length; i++) { 2919 sb.append(" ").append(results[i].SSID).append(" "); 2920 sb.append(results[i].frequency); 2921 sb.append(" ").append(results[i].level); 2922 } 2923 } 2924 break; 2925 case CMD_START_SCAN: 2926 now = System.currentTimeMillis(); 2927 sb.append(" "); 2928 sb.append(Integer.toString(msg.arg1)); 2929 sb.append(" "); 2930 sb.append(Integer.toString(msg.arg2)); 2931 sb.append(" ic="); 2932 sb.append(Integer.toString(sScanAlarmIntentCount)); 2933 if (msg.obj != null) { 2934 Bundle bundle = (Bundle) msg.obj; 2935 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2936 if (request != 0) { 2937 sb.append(" proc(ms):").append(now - request); 2938 } 2939 } 2940 if (mIsScanOngoing) sb.append(" onGoing"); 2941 if (mIsFullScanOngoing) sb.append(" full"); 2942 if (lastStartScanTimeStamp != 0) { 2943 sb.append(" started:").append(lastStartScanTimeStamp); 2944 sb.append(",").append(now - lastStartScanTimeStamp); 2945 } 2946 if (lastScanDuration != 0) { 2947 sb.append(" dur:").append(lastScanDuration); 2948 } 2949 sb.append(" cnt=").append(mDelayedScanCounter); 2950 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2951 sb.append(" f=").append(mWifiInfo.getFrequency()); 2952 sb.append(" sc=").append(mWifiInfo.score); 2953 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2954 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2955 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2956 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2957 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2958 if (lastScanFreqs != null) { 2959 sb.append(" list="); 2960 for(int freq : lastScanFreqs) { 2961 sb.append(freq).append(","); 2962 } 2963 } else { 2964 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2965 } 2966 report = reportOnTime(); 2967 if (report != null) { 2968 sb.append(" ").append(report); 2969 } 2970 break; 2971 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2972 sb.append(" "); 2973 sb.append(Integer.toString(msg.arg1)); 2974 sb.append(" "); 2975 sb.append(Integer.toString(msg.arg2)); 2976 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2977 if (stateChangeResult != null) { 2978 sb.append(stateChangeResult.toString()); 2979 } 2980 break; 2981 case WifiManager.SAVE_NETWORK: 2982 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg1)); 2985 sb.append(" "); 2986 sb.append(Integer.toString(msg.arg2)); 2987 if (lastSavedConfigurationAttempt != null) { 2988 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2989 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2990 if (lastSavedConfigurationAttempt.hiddenSSID) { 2991 sb.append(" hidden"); 2992 } 2993 if (lastSavedConfigurationAttempt.preSharedKey != null 2994 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2995 sb.append(" hasPSK"); 2996 } 2997 if (lastSavedConfigurationAttempt.ephemeral) { 2998 sb.append(" ephemeral"); 2999 } 3000 if (lastSavedConfigurationAttempt.selfAdded) { 3001 sb.append(" selfAdded"); 3002 } 3003 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 3004 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 3005 } 3006 break; 3007 case WifiManager.FORGET_NETWORK: 3008 sb.append(" "); 3009 sb.append(Integer.toString(msg.arg1)); 3010 sb.append(" "); 3011 sb.append(Integer.toString(msg.arg2)); 3012 if (lastForgetConfigurationAttempt != null) { 3013 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 3014 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 3015 if (lastForgetConfigurationAttempt.hiddenSSID) { 3016 sb.append(" hidden"); 3017 } 3018 if (lastForgetConfigurationAttempt.preSharedKey != null) { 3019 sb.append(" hasPSK"); 3020 } 3021 if (lastForgetConfigurationAttempt.ephemeral) { 3022 sb.append(" ephemeral"); 3023 } 3024 if (lastForgetConfigurationAttempt.selfAdded) { 3025 sb.append(" selfAdded"); 3026 } 3027 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 3028 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 3029 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3030 lastForgetConfigurationAttempt.getNetworkSelectionStatus(); 3031 sb.append(" ajst=").append( 3032 netWorkSelectionStatus.getNetworkStatusString()); 3033 } 3034 break; 3035 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 3036 sb.append(" "); 3037 sb.append(Integer.toString(msg.arg1)); 3038 sb.append(" "); 3039 sb.append(Integer.toString(msg.arg2)); 3040 String bssid = (String) msg.obj; 3041 if (bssid != null && bssid.length() > 0) { 3042 sb.append(" "); 3043 sb.append(bssid); 3044 } 3045 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 3046 break; 3047 case WifiMonitor.SCAN_RESULTS_EVENT: 3048 sb.append(" "); 3049 sb.append(Integer.toString(msg.arg1)); 3050 sb.append(" "); 3051 sb.append(Integer.toString(msg.arg2)); 3052 if (mScanResults != null) { 3053 sb.append(" found="); 3054 sb.append(mScanResults.size()); 3055 } 3056 sb.append(" known=").append(mNumScanResultsKnown); 3057 sb.append(" got=").append(mNumScanResultsReturned); 3058 if (lastScanDuration != 0) { 3059 sb.append(" dur:").append(lastScanDuration); 3060 } 3061 if (mOnTime != 0) { 3062 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 3063 sb.append(",").append(mOnTime); 3064 } 3065 if (mTxTime != 0) { 3066 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 3067 sb.append(",").append(mTxTime); 3068 } 3069 if (mRxTime != 0) { 3070 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 3071 sb.append(",").append(mRxTime); 3072 } 3073 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3074 sb.append(String.format(" con=%d", mConnectionRequests)); 3075 key = mWifiConfigStore.getLastSelectedConfiguration(); 3076 if (key != null) { 3077 sb.append(" last=").append(key); 3078 } 3079 break; 3080 case WifiMonitor.SCAN_FAILED_EVENT: 3081 break; 3082 case WifiMonitor.NETWORK_CONNECTION_EVENT: 3083 sb.append(" "); 3084 sb.append(Integer.toString(msg.arg1)); 3085 sb.append(" "); 3086 sb.append(Integer.toString(msg.arg2)); 3087 sb.append(" ").append(mLastBssid); 3088 sb.append(" nid=").append(mLastNetworkId); 3089 config = getCurrentWifiConfiguration(); 3090 if (config != null) { 3091 sb.append(" ").append(config.configKey()); 3092 } 3093 key = mWifiConfigStore.getLastSelectedConfiguration(); 3094 if (key != null) { 3095 sb.append(" last=").append(key); 3096 } 3097 break; 3098 case CMD_TARGET_BSSID: 3099 case CMD_ASSOCIATED_BSSID: 3100 sb.append(" "); 3101 sb.append(Integer.toString(msg.arg1)); 3102 sb.append(" "); 3103 sb.append(Integer.toString(msg.arg2)); 3104 if (msg.obj != null) { 3105 sb.append(" BSSID=").append((String) msg.obj); 3106 } 3107 if (mTargetRoamBSSID != null) { 3108 sb.append(" Target=").append(mTargetRoamBSSID); 3109 } 3110 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3111 break; 3112 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 3113 if (msg.obj != null) { 3114 sb.append(" ").append((String) msg.obj); 3115 } 3116 sb.append(" nid=").append(msg.arg1); 3117 sb.append(" reason=").append(msg.arg2); 3118 if (mLastBssid != null) { 3119 sb.append(" lastbssid=").append(mLastBssid); 3120 } 3121 if (mWifiInfo.getFrequency() != -1) { 3122 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3123 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3124 } 3125 if (linkDebouncing) { 3126 sb.append(" debounce"); 3127 } 3128 break; 3129 case WifiMonitor.SSID_TEMP_DISABLED: 3130 case WifiMonitor.SSID_REENABLED: 3131 sb.append(" nid=").append(msg.arg1); 3132 if (msg.obj != null) { 3133 sb.append(" ").append((String) msg.obj); 3134 } 3135 config = getCurrentWifiConfiguration(); 3136 if (config != null) { 3137 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3138 config.getNetworkSelectionStatus(); 3139 sb.append(" cur=").append(config.configKey()); 3140 sb.append(" ajst=").append(netWorkSelectionStatus.getNetworkStatusString()); 3141 if (config.selfAdded) { 3142 sb.append(" selfAdded"); 3143 } 3144 if (config.status != 0) { 3145 sb.append(" st=").append(config.status); 3146 sb.append(" rs=").append( 3147 netWorkSelectionStatus.getNetworkDisableReasonString()); 3148 } 3149 if (config.lastConnected != 0) { 3150 now = System.currentTimeMillis(); 3151 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 3152 } 3153 if (mLastBssid != null) { 3154 sb.append(" lastbssid=").append(mLastBssid); 3155 } 3156 if (mWifiInfo.getFrequency() != -1) { 3157 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3158 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3159 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 3160 } 3161 } 3162 break; 3163 case CMD_RSSI_POLL: 3164 case CMD_UNWANTED_NETWORK: 3165 case WifiManager.RSSI_PKTCNT_FETCH: 3166 sb.append(" "); 3167 sb.append(Integer.toString(msg.arg1)); 3168 sb.append(" "); 3169 sb.append(Integer.toString(msg.arg2)); 3170 if (mWifiInfo.getSSID() != null) 3171 if (mWifiInfo.getSSID() != null) 3172 sb.append(" ").append(mWifiInfo.getSSID()); 3173 if (mWifiInfo.getBSSID() != null) 3174 sb.append(" ").append(mWifiInfo.getBSSID()); 3175 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3176 sb.append(" f=").append(mWifiInfo.getFrequency()); 3177 sb.append(" sc=").append(mWifiInfo.score); 3178 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 3179 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 3180 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 3181 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 3182 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 3183 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3184 report = reportOnTime(); 3185 if (report != null) { 3186 sb.append(" ").append(report); 3187 } 3188 if (wifiScoringReport != null) { 3189 sb.append(wifiScoringReport); 3190 } 3191 if (mConnectedModeGScanOffloadStarted) { 3192 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3193 } else { 3194 sb.append(" offload-stopped"); 3195 } 3196 break; 3197 case CMD_AUTO_CONNECT: 3198 case WifiManager.CONNECT_NETWORK: 3199 sb.append(" "); 3200 sb.append(Integer.toString(msg.arg1)); 3201 sb.append(" "); 3202 sb.append(Integer.toString(msg.arg2)); 3203 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3204 if (config != null) { 3205 sb.append(" ").append(config.configKey()); 3206 if (config.visibility != null) { 3207 sb.append(" ").append(config.visibility.toString()); 3208 } 3209 } 3210 if (mTargetRoamBSSID != null) { 3211 sb.append(" ").append(mTargetRoamBSSID); 3212 } 3213 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3214 config = getCurrentWifiConfiguration(); 3215 if (config != null) { 3216 sb.append(config.configKey()); 3217 if (config.visibility != null) { 3218 sb.append(" ").append(config.visibility.toString()); 3219 } 3220 } 3221 break; 3222 case CMD_AUTO_ROAM: 3223 sb.append(" "); 3224 sb.append(Integer.toString(msg.arg1)); 3225 sb.append(" "); 3226 sb.append(Integer.toString(msg.arg2)); 3227 ScanResult result = (ScanResult) msg.obj; 3228 if (result != null) { 3229 now = System.currentTimeMillis(); 3230 sb.append(" bssid=").append(result.BSSID); 3231 sb.append(" rssi=").append(result.level); 3232 sb.append(" freq=").append(result.frequency); 3233 if (result.seen > 0 && result.seen < now) { 3234 sb.append(" seen=").append(now - result.seen); 3235 } else { 3236 // Somehow the timestamp for this scan result is inconsistent 3237 sb.append(" !seen=").append(result.seen); 3238 } 3239 } 3240 if (mTargetRoamBSSID != null) { 3241 sb.append(" ").append(mTargetRoamBSSID); 3242 } 3243 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3244 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3245 break; 3246 case CMD_ADD_OR_UPDATE_NETWORK: 3247 sb.append(" "); 3248 sb.append(Integer.toString(msg.arg1)); 3249 sb.append(" "); 3250 sb.append(Integer.toString(msg.arg2)); 3251 if (msg.obj != null) { 3252 config = (WifiConfiguration) msg.obj; 3253 sb.append(" ").append(config.configKey()); 3254 sb.append(" prio=").append(config.priority); 3255 sb.append(" status=").append(config.status); 3256 if (config.BSSID != null) { 3257 sb.append(" ").append(config.BSSID); 3258 } 3259 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3260 if (curConfig != null) { 3261 if (curConfig.configKey().equals(config.configKey())) { 3262 sb.append(" is current"); 3263 } else { 3264 sb.append(" current=").append(curConfig.configKey()); 3265 sb.append(" prio=").append(curConfig.priority); 3266 sb.append(" status=").append(curConfig.status); 3267 } 3268 } 3269 } 3270 break; 3271 case WifiManager.DISABLE_NETWORK: 3272 case CMD_ENABLE_NETWORK: 3273 sb.append(" "); 3274 sb.append(Integer.toString(msg.arg1)); 3275 sb.append(" "); 3276 sb.append(Integer.toString(msg.arg2)); 3277 key = mWifiConfigStore.getLastSelectedConfiguration(); 3278 if (key != null) { 3279 sb.append(" last=").append(key); 3280 } 3281 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3282 if (config != null && (key == null || !config.configKey().equals(key))) { 3283 sb.append(" target=").append(key); 3284 } 3285 break; 3286 case CMD_GET_CONFIGURED_NETWORKS: 3287 sb.append(" "); 3288 sb.append(Integer.toString(msg.arg1)); 3289 sb.append(" "); 3290 sb.append(Integer.toString(msg.arg2)); 3291 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3292 break; 3293 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3294 sb.append(" "); 3295 sb.append(Integer.toString(msg.arg1)); 3296 sb.append(" "); 3297 sb.append(Integer.toString(msg.arg2)); 3298 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3299 sb.append(",").append(mWifiInfo.txBad); 3300 sb.append(",").append(mWifiInfo.txRetries); 3301 break; 3302 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3303 sb.append(" "); 3304 sb.append(Integer.toString(msg.arg1)); 3305 sb.append(" "); 3306 sb.append(Integer.toString(msg.arg2)); 3307 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3308 sb.append(" OK "); 3309 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3310 sb.append(" FAIL "); 3311 } 3312 if (mLinkProperties != null) { 3313 sb.append(" "); 3314 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3315 } 3316 break; 3317 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3318 sb.append(" "); 3319 sb.append(Integer.toString(msg.arg1)); 3320 sb.append(" "); 3321 sb.append(Integer.toString(msg.arg2)); 3322 if (msg.obj != null) { 3323 NetworkInfo info = (NetworkInfo) msg.obj; 3324 NetworkInfo.State state = info.getState(); 3325 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3326 if (state != null) { 3327 sb.append(" st=").append(state); 3328 } 3329 if (detailedState != null) { 3330 sb.append("/").append(detailedState); 3331 } 3332 } 3333 break; 3334 case CMD_IP_CONFIGURATION_LOST: 3335 int count = -1; 3336 WifiConfiguration c = getCurrentWifiConfiguration(); 3337 if (c != null) { 3338 count = c.getNetworkSelectionStatus().getDisableReasonCounter( 3339 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 3340 } 3341 sb.append(" "); 3342 sb.append(Integer.toString(msg.arg1)); 3343 sb.append(" "); 3344 sb.append(Integer.toString(msg.arg2)); 3345 sb.append(" failures: "); 3346 sb.append(Integer.toString(count)); 3347 sb.append("/"); 3348 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3349 if (mWifiInfo.getBSSID() != null) { 3350 sb.append(" ").append(mWifiInfo.getBSSID()); 3351 } 3352 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3353 break; 3354 case CMD_UPDATE_LINKPROPERTIES: 3355 sb.append(" "); 3356 sb.append(Integer.toString(msg.arg1)); 3357 sb.append(" "); 3358 sb.append(Integer.toString(msg.arg2)); 3359 if (mLinkProperties != null) { 3360 sb.append(" "); 3361 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3362 } 3363 break; 3364 case CMD_IP_REACHABILITY_LOST: 3365 if (msg.obj != null) { 3366 sb.append(" ").append((String) msg.obj); 3367 } 3368 break; 3369 case CMD_SET_COUNTRY_CODE: 3370 sb.append(" "); 3371 sb.append(Integer.toString(msg.arg1)); 3372 sb.append(" "); 3373 sb.append(Integer.toString(msg.arg2)); 3374 if (msg.obj != null) { 3375 sb.append(" ").append((String) msg.obj); 3376 } 3377 break; 3378 case CMD_ROAM_WATCHDOG_TIMER: 3379 sb.append(" "); 3380 sb.append(Integer.toString(msg.arg1)); 3381 sb.append(" "); 3382 sb.append(Integer.toString(msg.arg2)); 3383 sb.append(" cur=").append(roamWatchdogCount); 3384 break; 3385 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3386 sb.append(" "); 3387 sb.append(Integer.toString(msg.arg1)); 3388 sb.append(" "); 3389 sb.append(Integer.toString(msg.arg2)); 3390 sb.append(" cur=").append(disconnectingWatchdogCount); 3391 break; 3392 case CMD_START_RSSI_MONITORING_OFFLOAD: 3393 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3394 case CMD_RSSI_THRESHOLD_BREACH: 3395 sb.append(" rssi="); 3396 sb.append(Integer.toString(msg.arg1)); 3397 sb.append(" thresholds="); 3398 sb.append(Arrays.toString(mRssiRanges)); 3399 break; 3400 case CMD_USER_SWITCH: 3401 sb.append(" userId="); 3402 sb.append(Integer.toString(msg.arg1)); 3403 break; 3404 case CMD_IPV4_PROVISIONING_SUCCESS: 3405 sb.append(" "); 3406 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3407 sb.append("DHCP_OK"); 3408 } else if (msg.arg1 == CMD_STATIC_IP_SUCCESS) { 3409 sb.append("STATIC_OK"); 3410 } else { 3411 sb.append(Integer.toString(msg.arg1)); 3412 } 3413 break; 3414 case CMD_IPV4_PROVISIONING_FAILURE: 3415 sb.append(" "); 3416 if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3417 sb.append("DHCP_FAIL"); 3418 } else if (msg.arg1 == CMD_STATIC_IP_FAILURE) { 3419 sb.append("STATIC_FAIL"); 3420 } else { 3421 sb.append(Integer.toString(msg.arg1)); 3422 } 3423 break; 3424 default: 3425 sb.append(" "); 3426 sb.append(Integer.toString(msg.arg1)); 3427 sb.append(" "); 3428 sb.append(Integer.toString(msg.arg2)); 3429 break; 3430 } 3431 3432 return sb.toString(); 3433 } 3434 3435 private void stopPnoOffload() { 3436 3437 // clear the PNO list 3438 if (!mWifiNative.setPnoList(null, WifiStateMachine.this)) { 3439 Log.e(TAG, "Failed to stop pno"); 3440 } 3441 3442 } 3443 3444 3445 private boolean configureSsidWhiteList() { 3446 3447 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3448 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3449 return true; 3450 } 3451 3452 if (!mWifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3453 loge("configureSsidWhiteList couldnt program SSID list, size " 3454 + mWhiteListedSsids.length); 3455 return false; 3456 } 3457 3458 logd("configureSsidWhiteList success"); 3459 return true; 3460 } 3461 3462 // In associated more, lazy roam will be looking for 5GHz roam candidate 3463 //Fixme: This is for network selection offload , whole function need to be re-written according 3464 // to the new design 3465 private boolean configureLazyRoam() { 3466 /*boolean status; 3467 if (!useHalBasedAutoJoinOffload()) return false; 3468 3469 WifiNative.WifiLazyRoamParams params = new WifiNative.WifiLazyRoamParams(); 3470 //params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3471 //params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3472 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3473 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3474 params.A_band_max_boost = 65; 3475 params.lazy_roam_hysteresis = 25; 3476 params.alert_roam_rssi_trigger = -75; 3477 3478 if (DBG) { 3479 Log.e(TAG, "configureLazyRoam " + params.toString()); 3480 } 3481 3482 if (!mWifiNative.setLazyRoam(true, params)) { 3483 3484 Log.e(TAG, "configureLazyRoam couldnt program params"); 3485 3486 return false; 3487 } 3488 if (DBG) { 3489 Log.e(TAG, "configureLazyRoam success"); 3490 }*/ 3491 return true; 3492 } 3493 3494 // In associated more, lazy roam will be looking for 5GHz roam candidate 3495 private boolean stopLazyRoam() { 3496 boolean status; 3497 if (!useHalBasedAutoJoinOffload()) return false; 3498 if (DBG) { 3499 Log.e(TAG, "stopLazyRoam"); 3500 } 3501 return mWifiNative.setLazyRoam(false, null); 3502 } 3503 3504 private boolean startGScanConnectedModeOffload(String reason) { 3505 if (DBG) { 3506 if (reason == null) { 3507 reason = ""; 3508 } 3509 logd("startGScanConnectedModeOffload " + reason); 3510 } 3511 stopGScan("startGScanConnectedModeOffload " + reason); 3512 if (!mScreenOn) return false; 3513 3514 if (USE_PAUSE_SCANS) { 3515 mWifiNative.pauseScan(); 3516 } 3517 mPnoEnabled = configurePno(); 3518 if (mPnoEnabled == false) { 3519 if (USE_PAUSE_SCANS) { 3520 mWifiNative.restartScan(); 3521 } 3522 return false; 3523 } 3524 mLazyRoamEnabled = configureLazyRoam(); 3525 if (mLazyRoamEnabled == false) { 3526 if (USE_PAUSE_SCANS) { 3527 mWifiNative.restartScan(); 3528 } 3529 return false; 3530 } 3531 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3532 configureSsidWhiteList(); 3533 } 3534 if (!startConnectedGScan(reason)) { 3535 if (USE_PAUSE_SCANS) { 3536 mWifiNative.restartScan(); 3537 } 3538 return false; 3539 } 3540 if (USE_PAUSE_SCANS) { 3541 mWifiNative.restartScan(); 3542 } 3543 mConnectedModeGScanOffloadStarted = true; 3544 if (DBG) { 3545 logd("startGScanConnectedModeOffload success"); 3546 } 3547 return true; 3548 } 3549 3550 private boolean startGScanDisconnectedModeOffload(String reason) { 3551 if (DBG) { 3552 logd("startGScanDisconnectedModeOffload " + reason); 3553 } 3554 stopGScan("startGScanDisconnectedModeOffload " + reason); 3555 if (USE_PAUSE_SCANS) { 3556 mWifiNative.pauseScan(); 3557 } 3558 mPnoEnabled = configurePno(); 3559 if (mPnoEnabled == false) { 3560 if (USE_PAUSE_SCANS) { 3561 mWifiNative.restartScan(); 3562 } 3563 return false; 3564 } 3565 if (!startDisconnectedGScan(reason)) { 3566 if (USE_PAUSE_SCANS) { 3567 mWifiNative.restartScan(); 3568 } 3569 return false; 3570 } 3571 if (USE_PAUSE_SCANS) { 3572 mWifiNative.restartScan(); 3573 } 3574 return true; 3575 } 3576 3577 private boolean configurePno() { 3578 if (!useHalBasedAutoJoinOffload()) return false; 3579 3580 if (mWifiScanner == null) { 3581 log("configurePno: mWifiScanner is null "); 3582 return true; 3583 } 3584 3585 List<WifiNative.WifiPnoNetwork> llist = null; 3586 //TODO: add getPnoList in WifiQualifiedNetworkSelector 3587 //mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3588 if (llist == null || llist.size() == 0) { 3589 stopPnoOffload(); 3590 log("configurePno: empty PNO list "); 3591 return true; 3592 } 3593 if (DBG) { 3594 log("configurePno: got llist size " + llist.size()); 3595 } 3596 3597 // first program the network we want to look for thru the pno API 3598 WifiNative.WifiPnoNetwork list[] 3599 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3600 3601 if (!mWifiNative.setPnoList(list, WifiStateMachine.this)) { 3602 Log.e(TAG, "Failed to set pno, length = " + list.length); 3603 return false; 3604 } 3605 3606 if (true) { 3607 StringBuilder sb = new StringBuilder(); 3608 for (WifiNative.WifiPnoNetwork network : list) { 3609 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3610 sb.append(" flags="); 3611 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3612 sb.append("] "); 3613 3614 } 3615 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3616 } 3617 return true; 3618 } 3619 3620 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3621 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3622 3623 private boolean startConnectedGScan(String reason) { 3624 // send a scan background request so as to kick firmware 3625 // 5GHz roaming and autojoin 3626 // We do this only if screen is on 3627 WifiScanner.ScanSettings settings; 3628 3629 if (mPnoEnabled || mLazyRoamEnabled) { 3630 settings = new WifiScanner.ScanSettings(); 3631 settings.band = WifiScanner.WIFI_BAND_BOTH; 3632 long now = System.currentTimeMillis(); 3633 3634 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3635 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3636 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3637 } else { 3638 mGScanStartTimeMilli = now; 3639 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3640 // if we start offload with short interval, then reconfigure it after a given 3641 // duration of time so as to reduce the scan frequency 3642 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3643 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3644 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3645 (long)delay); 3646 mRestartAutoJoinOffloadCounter++; 3647 } 3648 mGScanPeriodMilli = settings.periodInMs; 3649 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3650 if (DBG) { 3651 log("startConnectedScan: settings band="+ settings.band 3652 + " period=" + settings.periodInMs); 3653 } 3654 3655 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3656 if (true) { 3657 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3658 } 3659 } 3660 return true; 3661 } 3662 3663 private boolean startDisconnectedGScan(String reason) { 3664 // send a scan background request so as to kick firmware 3665 // PNO 3666 // This is done in both screen On and screen Off modes 3667 WifiScanner.ScanSettings settings; 3668 3669 if (mWifiScanner == null) { 3670 log("startDisconnectedGScan: no wifi scanner"); 3671 return false; 3672 } 3673 3674 if (mPnoEnabled || mLazyRoamEnabled) { 3675 settings = new WifiScanner.ScanSettings(); 3676 settings.band = WifiScanner.WIFI_BAND_BOTH; 3677 long now = System.currentTimeMillis(); 3678 3679 3680 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3681 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3682 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3683 } else { 3684 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3685 mGScanStartTimeMilli = now; 3686 // if we start offload with short interval, then reconfigure it after a given 3687 // duration of time so as to reduce the scan frequency 3688 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3689 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3690 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3691 (long)delay); 3692 mRestartAutoJoinOffloadCounter++; 3693 } 3694 mGScanPeriodMilli = settings.periodInMs; 3695 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3696 if (DBG) { 3697 log("startDisconnectedScan: settings band="+ settings.band 3698 + " period=" + settings.periodInMs); 3699 } 3700 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3701 if (true) { 3702 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3703 } 3704 } 3705 return true; 3706 } 3707 3708 private boolean stopGScan(String reason) { 3709 mGScanStartTimeMilli = 0; 3710 mGScanPeriodMilli = 0; 3711 if (mWifiScanner != null) { 3712 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3713 } 3714 mConnectedModeGScanOffloadStarted = false; 3715 if (true) { 3716 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3717 } 3718 return true; 3719 } 3720 3721 private void handleScreenStateChanged(boolean screenOn) { 3722 mScreenOn = screenOn; 3723 if (PDBG) { 3724 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3725 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3726 + " state " + getCurrentState().getName() 3727 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3728 } 3729 enableRssiPolling(screenOn); 3730 if (mUserWantsSuspendOpt.get()) { 3731 if (screenOn) { 3732 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3733 } else { 3734 // Allow 2s for suspend optimizations to be set 3735 mSuspendWakeLock.acquire(2000); 3736 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3737 } 3738 } 3739 mScreenBroadcastReceived.set(true); 3740 3741 getWifiLinkLayerStats(false); 3742 mOnTimeScreenStateChange = mOnTime; 3743 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3744 3745 cancelDelayedScan(); 3746 3747 if (screenOn) { 3748 enableBackgroundScan(false); 3749 setScanAlarm(false); 3750 clearBlacklist(); 3751 3752 fullBandConnectedTimeIntervalMilli 3753 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3754 // In either Disconnectedstate or ConnectedState, 3755 // start the scan alarm so as to enable autojoin 3756 if (getCurrentState() == mConnectedState 3757 && allowFullBandScanAndAssociated()) { 3758 if (useHalBasedAutoJoinOffload()) { 3759 startGScanConnectedModeOffload("screenOnConnected"); 3760 } else { 3761 // Scan after 500ms 3762 startDelayedScan(500, null, null); 3763 } 3764 } else if (getCurrentState() == mDisconnectedState) { 3765 if (useHalBasedAutoJoinOffload()) { 3766 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3767 } else { 3768 // Scan after 500ms 3769 startDelayedScan(500, null, null); 3770 } 3771 } 3772 } else { 3773 if (getCurrentState() == mDisconnectedState) { 3774 // Screen Off and Disconnected and chipset doesn't support scan offload 3775 // => start scan alarm 3776 // Screen Off and Disconnected and chipset does support scan offload 3777 // => will use scan offload (i.e. background scan) 3778 if (useHalBasedAutoJoinOffload()) { 3779 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3780 } else { 3781 if (!mBackgroundScanSupported) { 3782 setScanAlarm(true); 3783 } else { 3784 if (!mIsScanOngoing) { 3785 enableBackgroundScan(true); 3786 } 3787 } 3788 } 3789 } else { 3790 enableBackgroundScan(false); 3791 if (useHalBasedAutoJoinOffload()) { 3792 // don't try stop Gscan if it is not enabled 3793 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3794 } 3795 } 3796 } 3797 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3798 3799 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3800 } 3801 3802 private void checkAndSetConnectivityInstance() { 3803 if (mCm == null) { 3804 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3805 } 3806 } 3807 3808 private boolean startTethering(ArrayList<String> available) { 3809 3810 boolean wifiAvailable = false; 3811 3812 checkAndSetConnectivityInstance(); 3813 3814 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3815 3816 for (String intf : available) { 3817 for (String regex : wifiRegexs) { 3818 if (intf.matches(regex)) { 3819 3820 InterfaceConfiguration ifcg = null; 3821 try { 3822 ifcg = mNwService.getInterfaceConfig(intf); 3823 if (ifcg != null) { 3824 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3825 ifcg.setLinkAddress(new LinkAddress( 3826 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3827 ifcg.setInterfaceUp(); 3828 3829 mNwService.setInterfaceConfig(intf, ifcg); 3830 } 3831 } catch (Exception e) { 3832 loge("Error configuring interface " + intf + ", :" + e); 3833 return false; 3834 } 3835 3836 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3837 loge("Error tethering on " + intf); 3838 return false; 3839 } 3840 mTetherInterfaceName = intf; 3841 return true; 3842 } 3843 } 3844 } 3845 // We found no interfaces to tether 3846 return false; 3847 } 3848 3849 private void stopTethering() { 3850 3851 checkAndSetConnectivityInstance(); 3852 3853 /* Clear the interface config to allow dhcp correctly configure new 3854 ip settings */ 3855 InterfaceConfiguration ifcg = null; 3856 try { 3857 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3858 if (ifcg != null) { 3859 ifcg.setLinkAddress( 3860 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3861 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3862 } 3863 } catch (Exception e) { 3864 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3865 } 3866 3867 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3868 loge("Untether initiate failed!"); 3869 } 3870 } 3871 3872 private boolean isWifiTethered(ArrayList<String> active) { 3873 3874 checkAndSetConnectivityInstance(); 3875 3876 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3877 for (String intf : active) { 3878 for (String regex : wifiRegexs) { 3879 if (intf.matches(regex)) { 3880 return true; 3881 } 3882 } 3883 } 3884 // We found no interfaces that are tethered 3885 return false; 3886 } 3887 3888 /** 3889 * Set the country code from the system setting value, if any. 3890 */ 3891 private void initializeCountryCode() { 3892 String countryCode = getCurrentCountryCode(); 3893 if (countryCode != null && !countryCode.isEmpty()) { 3894 setCountryCode(countryCode, false); 3895 } else { 3896 //use driver default 3897 } 3898 } 3899 3900 /** 3901 * Set the frequency band from the system setting value, if any. 3902 */ 3903 private void setFrequencyBand() { 3904 int band = mFacade.getIntegerSetting(mContext, 3905 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3906 3907 if (mWifiNative.setBand(band)) { 3908 mFrequencyBand.set(band); 3909 if (PDBG) { 3910 logd("done set frequency band " + band); 3911 mWifiQualifiedNetworkSelector.setUserPreferredBand(band); 3912 } 3913 } else { 3914 loge("Failed to set frequency band " + band); 3915 } 3916 } 3917 3918 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3919 if (DBG) { 3920 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3921 + " -want " + mUserWantsSuspendOpt.get() 3922 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3923 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3924 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3925 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3926 } 3927 //mWifiNative.setSuspendOptimizations(enabled); 3928 3929 if (enabled) { 3930 mSuspendOptNeedsDisabled &= ~reason; 3931 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3932 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3933 if (DBG) { 3934 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3935 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3936 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3937 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3938 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3939 } 3940 mWifiNative.setSuspendOptimizations(true); 3941 } 3942 } else { 3943 mSuspendOptNeedsDisabled |= reason; 3944 mWifiNative.setSuspendOptimizations(false); 3945 } 3946 } 3947 3948 private void setSuspendOptimizations(int reason, boolean enabled) { 3949 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3950 if (enabled) { 3951 mSuspendOptNeedsDisabled &= ~reason; 3952 } else { 3953 mSuspendOptNeedsDisabled |= reason; 3954 } 3955 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3956 } 3957 3958 private void setWifiState(int wifiState) { 3959 final int previousWifiState = mWifiState.get(); 3960 3961 try { 3962 if (wifiState == WIFI_STATE_ENABLED) { 3963 mBatteryStats.noteWifiOn(); 3964 } else if (wifiState == WIFI_STATE_DISABLED) { 3965 mBatteryStats.noteWifiOff(); 3966 } 3967 } catch (RemoteException e) { 3968 loge("Failed to note battery stats in wifi"); 3969 } 3970 3971 mWifiState.set(wifiState); 3972 3973 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3974 3975 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3976 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3977 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3978 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3979 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3980 } 3981 3982 private void setWifiApState(int wifiApState, int reason) { 3983 final int previousWifiApState = mWifiApState.get(); 3984 3985 try { 3986 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3987 mBatteryStats.noteWifiOn(); 3988 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3989 mBatteryStats.noteWifiOff(); 3990 } 3991 } catch (RemoteException e) { 3992 loge("Failed to note battery stats in wifi"); 3993 } 3994 3995 // Update state 3996 mWifiApState.set(wifiApState); 3997 3998 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3999 4000 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 4001 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4002 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 4003 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 4004 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 4005 //only set reason number when softAP start failed 4006 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 4007 } 4008 4009 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4010 } 4011 4012 private void setScanResults() { 4013 mNumScanResultsKnown = 0; 4014 mNumScanResultsReturned = 0; 4015 4016 ArrayList<ScanDetail> scanResults = mWifiNative.getScanResults(); 4017 4018 if (scanResults.isEmpty()) { 4019 mScanResults = new ArrayList<>(); 4020 return; 4021 } 4022 4023 mWifiConfigStore.trimANQPCache(false); 4024 4025 boolean connected = mLastBssid != null; 4026 long activeBssid = 0L; 4027 if (connected) { 4028 try { 4029 activeBssid = Utils.parseMac(mLastBssid); 4030 } catch (IllegalArgumentException iae) { 4031 connected = false; 4032 } 4033 } 4034 4035 synchronized (mScanResultCache) { 4036 ScanDetail activeScanDetail = null; 4037 mScanResults = scanResults; 4038 mNumScanResultsReturned = mScanResults.size(); 4039 for (ScanDetail resultDetail : mScanResults) { 4040 mScanResultCache.put(resultDetail.getNetworkDetail(), resultDetail); 4041 if (connected && resultDetail.getNetworkDetail().getBSSID() == activeBssid) { 4042 if (activeScanDetail == null 4043 || activeScanDetail.getNetworkDetail().getBSSID() != activeBssid 4044 || activeScanDetail.getNetworkDetail().getANQPElements() == null) { 4045 activeScanDetail = resultDetail; 4046 } 4047 } 4048 } 4049 mActiveScanDetail = activeScanDetail; 4050 } 4051 if (mNumScanResultsReturned > 0) { 4052 mWifiMetrics.incrementNonEmptyScanResultCount(); 4053 } else { 4054 mWifiMetrics.incrementEmptyScanResultCount(); 4055 } 4056 4057 if (linkDebouncing) { 4058 // If debouncing, we dont re-select a SSID or BSSID hence 4059 // there is no need to call the network selection code 4060 // in WifiAutoJoinController, instead, 4061 // just try to reconnect to the same SSID by triggering a roam 4062 // The third parameter 1 means roam not from network selection but debouncing 4063 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4064 } else { 4065 WifiConfiguration candidate = 4066 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false, 4067 mAllowUntrustedConnections, mScanResults, linkDebouncing, isConnected(), 4068 isDisconnected(), isSupplicantTransientState()); 4069 tryToConnectToNetwork(candidate); 4070 } 4071 } 4072 4073 /** 4074 * Set whether connections to untrusted connections are allowed. 4075 */ 4076 void setAllowUntrustedConnections(boolean allow) { 4077 boolean changed = (mAllowUntrustedConnections != allow); 4078 mAllowUntrustedConnections = allow; 4079 if (changed) { 4080 // Trigger a scan so as to reattempt autojoin 4081 startScanForUntrustedSettingChange(); 4082 } 4083 } 4084 4085 public ScanDetail getActiveScanDetail() { 4086 synchronized (mScanResultCache) { 4087 return mActiveScanDetail; 4088 } 4089 } 4090 4091 /* 4092 * Fetch RSSI, linkspeed, and frequency on current connection 4093 */ 4094 private void fetchRssiLinkSpeedAndFrequencyNative() { 4095 Integer newRssi = null; 4096 Integer newLinkSpeed = null; 4097 Integer newFrequency = null; 4098 4099 String signalPoll = mWifiNative.signalPoll(); 4100 4101 if (signalPoll != null) { 4102 String[] lines = signalPoll.split("\n"); 4103 for (String line : lines) { 4104 String[] prop = line.split("="); 4105 if (prop.length < 2) continue; 4106 try { 4107 if (prop[0].equals("RSSI")) { 4108 newRssi = Integer.parseInt(prop[1]); 4109 } else if (prop[0].equals("LINKSPEED")) { 4110 newLinkSpeed = Integer.parseInt(prop[1]); 4111 } else if (prop[0].equals("FREQUENCY")) { 4112 newFrequency = Integer.parseInt(prop[1]); 4113 } 4114 } catch (NumberFormatException e) { 4115 //Ignore, defaults on rssi and linkspeed are assigned 4116 } 4117 } 4118 } 4119 4120 if (PDBG) { 4121 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi + 4122 " linkspeed=" + newLinkSpeed + " freq=" + newFrequency); 4123 } 4124 4125 if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4126 // screen out invalid values 4127 /* some implementations avoid negative values by adding 256 4128 * so we need to adjust for that here. 4129 */ 4130 if (newRssi > 0) newRssi -= 256; 4131 mWifiInfo.setRssi(newRssi); 4132 /* 4133 * Rather then sending the raw RSSI out every time it 4134 * changes, we precalculate the signal level that would 4135 * be displayed in the status bar, and only send the 4136 * broadcast if that much more coarse-grained number 4137 * changes. This cuts down greatly on the number of 4138 * broadcasts, at the cost of not informing others 4139 * interested in RSSI of all the changes in signal 4140 * level. 4141 */ 4142 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4143 if (newSignalLevel != mLastSignalLevel) { 4144 updateCapabilities(getCurrentWifiConfiguration()); 4145 sendRssiChangeBroadcast(newRssi); 4146 } 4147 mLastSignalLevel = newSignalLevel; 4148 } else { 4149 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4150 updateCapabilities(getCurrentWifiConfiguration()); 4151 } 4152 4153 if (newLinkSpeed != null) { 4154 mWifiInfo.setLinkSpeed(newLinkSpeed); 4155 } 4156 if (newFrequency != null && newFrequency > 0) { 4157 if (ScanResult.is5GHz(newFrequency)) { 4158 mWifiConnectionStatistics.num5GhzConnected++; 4159 } 4160 if (ScanResult.is24GHz(newFrequency)) { 4161 mWifiConnectionStatistics.num24GhzConnected++; 4162 } 4163 mWifiInfo.setFrequency(newFrequency); 4164 } 4165 mWifiConfigStore.updateConfiguration(mWifiInfo); 4166 } 4167 4168 /** 4169 * Determine if we need to switch network: 4170 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4171 * - match the uregncy of the switch versus the packet usage at the interface 4172 */ 4173 boolean shouldSwitchNetwork(int networkDelta) { 4174 int delta; 4175 if (networkDelta <= 0) { 4176 return false; 4177 } 4178 delta = networkDelta; 4179 if (mWifiInfo != null) { 4180 if (!getEnableAutoJoinWhenAssociated() 4181 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4182 // If AutoJoin while associated is not enabled, 4183 // we should never switch network when already associated 4184 delta = -1000; 4185 } else { 4186 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4187 // TODO: at the interface. We should also discriminate between ucast and mcast, 4188 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4189 // TODO: broadcasts 4190 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4191 delta -= 999; 4192 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4193 delta -= 6; 4194 } 4195 logd("shouldSwitchNetwork " 4196 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4197 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4198 + " delta " + networkDelta + " -> " + delta); 4199 } 4200 } else { 4201 logd("shouldSwitchNetwork " 4202 + " delta " + networkDelta + " -> " + delta); 4203 } 4204 if (delta > 0) { 4205 return true; 4206 } 4207 return false; 4208 } 4209 4210 // Polling has completed, hence we wont have a score anymore 4211 private void cleanWifiScore() { 4212 mWifiInfo.txBadRate = 0; 4213 mWifiInfo.txSuccessRate = 0; 4214 mWifiInfo.txRetriesRate = 0; 4215 mWifiInfo.rxSuccessRate = 0; 4216 } 4217 4218 int mBadLinkspeedcount = 0; 4219 4220 // For debug, provide information about the last scoring operation 4221 String wifiScoringReport = null; 4222 4223 private void calculateWifiScore(WifiLinkLayerStats stats) { 4224 StringBuilder sb = new StringBuilder(); 4225 4226 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4227 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4228 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4229 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4230 < mWifiConfigStore.badLinkSpeed5); 4231 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4232 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4233 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4234 >= mWifiConfigStore.goodLinkSpeed5); 4235 4236 if (isBadLinkspeed) { 4237 if (mBadLinkspeedcount < 6) 4238 mBadLinkspeedcount++; 4239 } else { 4240 if (mBadLinkspeedcount > 0) 4241 mBadLinkspeedcount--; 4242 } 4243 4244 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4245 if (isGoodLinkspeed) sb.append(" gl"); 4246 4247 /** 4248 * We want to make sure that we use the 24GHz RSSI thresholds if 4249 * there are 2.4GHz scan results 4250 * otherwise we end up lowering the score based on 5GHz values 4251 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4252 * We also might unblacklist the configuation based on 2.4GHz 4253 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4254 */ 4255 boolean use24Thresholds = false; 4256 boolean homeNetworkBoost = false; 4257 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4258 ScanDetailCache scanDetailCache = 4259 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4260 if (currentConfiguration != null && scanDetailCache != null) { 4261 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4262 if (currentConfiguration.visibility != null) { 4263 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4264 && currentConfiguration.visibility.rssi24 4265 >= (currentConfiguration.visibility.rssi5 - 2)) { 4266 use24Thresholds = true; 4267 } 4268 } 4269 if (scanDetailCache.size() <= 6 4270 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4271 && currentConfiguration.allowedKeyManagement. 4272 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4273 // A PSK network with less than 6 known BSSIDs 4274 // This is most likely a home network and thus we want to stick to wifi more 4275 homeNetworkBoost = true; 4276 } 4277 } 4278 if (homeNetworkBoost) sb.append(" hn"); 4279 if (use24Thresholds) sb.append(" u24"); 4280 4281 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4282 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4283 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4284 4285 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4286 4287 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 4288 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 4289 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 4290 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdMinimumRssi5.get()); 4291 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 4292 || (!is24GHz && mWifiInfo.getRssi() 4293 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 4294 4295 if (isBadRSSI) sb.append(" br"); 4296 if (isLowRSSI) sb.append(" lr"); 4297 if (isHighRSSI) sb.append(" hr"); 4298 4299 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4300 if (currentConfiguration != null && 4301 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4302 if (isBadRSSI) { 4303 currentConfiguration.numTicksAtBadRSSI++; 4304 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4305 // We remained associated for a compound amount of time while passing 4306 // traffic, hence loose the corresponding user triggered disabled stats 4307 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4308 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4309 } 4310 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4311 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4312 } 4313 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4314 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4315 } 4316 currentConfiguration.numTicksAtBadRSSI = 0; 4317 } 4318 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4319 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4320 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4321 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4322 score = score - 5; 4323 penalizedDueToUserTriggeredDisconnect = 1; 4324 sb.append(" p1"); 4325 } 4326 } else if (isLowRSSI) { 4327 currentConfiguration.numTicksAtLowRSSI++; 4328 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4329 // We remained associated for a compound amount of time while passing 4330 // traffic, hence loose the corresponding user triggered disabled stats 4331 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4332 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4333 } 4334 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4335 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4336 } 4337 currentConfiguration.numTicksAtLowRSSI = 0; 4338 } 4339 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4340 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4341 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4342 score = score - 5; 4343 penalizedDueToUserTriggeredDisconnect = 2; 4344 sb.append(" p2"); 4345 } 4346 } else if (!isHighRSSI) { 4347 currentConfiguration.numTicksAtNotHighRSSI++; 4348 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4349 // We remained associated for a compound amount of time while passing 4350 // traffic, hence loose the corresponding user triggered disabled stats 4351 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4352 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4353 } 4354 currentConfiguration.numTicksAtNotHighRSSI = 0; 4355 } 4356 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4357 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4358 score = score - 5; 4359 penalizedDueToUserTriggeredDisconnect = 3; 4360 sb.append(" p3"); 4361 } 4362 } 4363 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4364 currentConfiguration.numTicksAtLowRSSI, 4365 currentConfiguration.numTicksAtNotHighRSSI)); 4366 } 4367 4368 if (PDBG) { 4369 String rssiStatus = ""; 4370 if (isBadRSSI) rssiStatus += " badRSSI "; 4371 else if (isHighRSSI) rssiStatus += " highRSSI "; 4372 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4373 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4374 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4375 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4376 + " score=" + Integer.toString(mWifiInfo.score) 4377 + rssiStatus 4378 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4379 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4380 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4381 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4382 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4383 } 4384 4385 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4386 && (isBadRSSI || isLowRSSI)) { 4387 // Link is stuck 4388 if (mWifiInfo.linkStuckCount < 5) 4389 mWifiInfo.linkStuckCount += 1; 4390 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4391 if (PDBG) logd(" bad link -> stuck count =" 4392 + Integer.toString(mWifiInfo.linkStuckCount)); 4393 } else if (mWifiInfo.txBadRate < 0.3) { 4394 if (mWifiInfo.linkStuckCount > 0) 4395 mWifiInfo.linkStuckCount -= 1; 4396 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4397 if (PDBG) logd(" good link -> stuck count =" 4398 + Integer.toString(mWifiInfo.linkStuckCount)); 4399 } 4400 4401 sb.append(String.format(" [%d", score)); 4402 4403 if (mWifiInfo.linkStuckCount > 1) { 4404 // Once link gets stuck for more than 3 seconds, start reducing the score 4405 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4406 } 4407 sb.append(String.format(",%d", score)); 4408 4409 if (isBadLinkspeed) { 4410 score -= 4; 4411 if (PDBG) { 4412 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4413 + " score=" + Integer.toString(score)); 4414 } 4415 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4416 score += 4; // So as bad rssi alone dont kill us 4417 } 4418 sb.append(String.format(",%d", score)); 4419 4420 if (isBadRSSI) { 4421 if (mWifiInfo.badRssiCount < 7) 4422 mWifiInfo.badRssiCount += 1; 4423 } else if (isLowRSSI) { 4424 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4425 if (mWifiInfo.badRssiCount > 0) { 4426 // Decrement bad Rssi count 4427 mWifiInfo.badRssiCount -= 1; 4428 } 4429 } else { 4430 mWifiInfo.badRssiCount = 0; 4431 mWifiInfo.lowRssiCount = 0; 4432 } 4433 4434 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4435 sb.append(String.format(",%d", score)); 4436 4437 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4438 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4439 + " --> score " + Integer.toString(score)); 4440 4441 4442 if (isHighRSSI) { 4443 score += 5; 4444 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4445 } 4446 sb.append(String.format(",%d]", score)); 4447 4448 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4449 4450 //sanitize boundaries 4451 if (score > NetworkAgent.WIFI_BASE_SCORE) 4452 score = NetworkAgent.WIFI_BASE_SCORE; 4453 if (score < 0) 4454 score = 0; 4455 4456 //report score 4457 if (score != mWifiInfo.score) { 4458 if (DBG) { 4459 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4460 } 4461 mWifiInfo.score = score; 4462 if (mNetworkAgent != null) { 4463 mNetworkAgent.sendNetworkScore(score); 4464 } 4465 } 4466 wifiScoringReport = sb.toString(); 4467 } 4468 4469 public double getTxPacketRate() { 4470 if (mWifiInfo != null) { 4471 return mWifiInfo.txSuccessRate; 4472 } 4473 return -1; 4474 } 4475 4476 public double getRxPacketRate() { 4477 if (mWifiInfo != null) { 4478 return mWifiInfo.rxSuccessRate; 4479 } 4480 return -1; 4481 } 4482 4483 /** 4484 * Fetch TX packet counters on current connection 4485 */ 4486 private void fetchPktcntNative(RssiPacketCountInfo info) { 4487 String pktcntPoll = mWifiNative.pktcntPoll(); 4488 4489 if (pktcntPoll != null) { 4490 String[] lines = pktcntPoll.split("\n"); 4491 for (String line : lines) { 4492 String[] prop = line.split("="); 4493 if (prop.length < 2) continue; 4494 try { 4495 if (prop[0].equals("TXGOOD")) { 4496 info.txgood = Integer.parseInt(prop[1]); 4497 } else if (prop[0].equals("TXBAD")) { 4498 info.txbad = Integer.parseInt(prop[1]); 4499 } 4500 } catch (NumberFormatException e) { 4501 // Ignore 4502 } 4503 } 4504 } 4505 } 4506 4507 private void notifyLinkProperties() { 4508 // TODO: Add setters for TCP buffer sizes and HTTP proxy to IpManager. 4509 // Once that is done delete this. 4510 updateLinkProperties(new LinkProperties(mLinkProperties)); 4511 } 4512 4513 private void updateLinkProperties(LinkProperties newLp) { 4514 // HTTP proxy and TCP buffer sizes are locally configured. 4515 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4516 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4517 newLp.setTcpBufferSizes(mTcpBufferSizes); 4518 } 4519 4520 if (!newLp.equals(mLinkProperties)) { 4521 if (DBG) { 4522 log("Link configuration changed for netId: " + mLastNetworkId 4523 + " old: " + mLinkProperties + " new: " + newLp); 4524 } 4525 // We own this instance of LinkProperties because IpManager passes us a copy. 4526 mLinkProperties = newLp; 4527 if (mNetworkAgent != null) { 4528 mNetworkAgent.sendLinkProperties(mLinkProperties); 4529 } 4530 4531 if (getNetworkDetailedState() == DetailedState.CONNECTED) { 4532 // If anything has changed and we're already connected, send out a notification. 4533 // TODO: Update all callers to use NetworkCallbacks and delete this. 4534 sendLinkConfigurationChangedBroadcast(); 4535 } 4536 } 4537 4538 if (DBG) { 4539 StringBuilder sb = new StringBuilder(); 4540 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4541 sb.append(" state: " + getNetworkDetailedState()); 4542 4543 if (mLinkProperties != null) { 4544 sb.append(" "); 4545 sb.append(getLinkPropertiesSummary(mLinkProperties)); 4546 } 4547 logd(sb.toString()); 4548 } 4549 } 4550 4551 /** 4552 * Clears all our link properties. 4553 */ 4554 private void clearLinkProperties() { 4555 // Clear the link properties obtained from DHCP. The only caller of this 4556 // function has already called IpManager#stop(), which clears its state. 4557 synchronized (mDhcpResultsLock) { 4558 if (mDhcpResults != null) { 4559 mDhcpResults.clear(); 4560 } 4561 } 4562 4563 // Now clear the merged link properties. 4564 mLinkProperties.clear(); 4565 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4566 } 4567 4568 /** 4569 * try to update default route MAC address. 4570 */ 4571 private String updateDefaultRouteMacAddress(int timeout) { 4572 String address = null; 4573 for (RouteInfo route : mLinkProperties.getRoutes()) { 4574 if (route.isDefaultRoute() && route.hasGateway()) { 4575 InetAddress gateway = route.getGateway(); 4576 if (gateway instanceof Inet4Address) { 4577 if (PDBG) { 4578 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4579 + gateway.getHostAddress()); 4580 } 4581 address = macAddressFromRoute(gateway.getHostAddress()); 4582 /* The gateway's MAC address is known */ 4583 if ((address == null) && (timeout > 0)) { 4584 boolean reachable = false; 4585 try { 4586 reachable = gateway.isReachable(timeout); 4587 } catch (Exception e) { 4588 loge("updateDefaultRouteMacAddress exception reaching :" 4589 + gateway.getHostAddress()); 4590 4591 } finally { 4592 if (reachable == true) { 4593 4594 address = macAddressFromRoute(gateway.getHostAddress()); 4595 if (PDBG) { 4596 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4597 + gateway.getHostAddress() + " found " + address); 4598 } 4599 } 4600 } 4601 } 4602 if (address != null) { 4603 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4604 } 4605 } 4606 } 4607 } 4608 return address; 4609 } 4610 4611 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4612 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4613 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4614 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4615 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4616 } 4617 4618 private void sendRssiChangeBroadcast(final int newRssi) { 4619 try { 4620 mBatteryStats.noteWifiRssiChanged(newRssi); 4621 } catch (RemoteException e) { 4622 // Won't happen. 4623 } 4624 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4625 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4626 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4627 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4628 } 4629 4630 private void sendNetworkStateChangeBroadcast(String bssid) { 4631 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4632 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4633 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4634 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4635 if (bssid != null) 4636 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4637 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4638 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4639 // We no longer report MAC address to third-parties and our code does 4640 // not rely on this broadcast, so just send the default MAC address. 4641 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4642 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4643 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4644 } 4645 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4646 } 4647 4648 private WifiInfo getWiFiInfoForUid(int uid) { 4649 if (Binder.getCallingUid() == Process.myUid()) { 4650 return mWifiInfo; 4651 } 4652 4653 WifiInfo result = new WifiInfo(mWifiInfo); 4654 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4655 4656 IBinder binder = mFacade.getService("package"); 4657 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4658 4659 try { 4660 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4661 uid) == PackageManager.PERMISSION_GRANTED) { 4662 result.setMacAddress(mWifiInfo.getMacAddress()); 4663 } 4664 } catch (RemoteException e) { 4665 Log.e(TAG, "Error checking receiver permission", e); 4666 } 4667 4668 return result; 4669 } 4670 4671 private void sendLinkConfigurationChangedBroadcast() { 4672 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4673 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4674 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4675 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4676 } 4677 4678 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4679 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4680 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4681 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4682 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4683 } 4684 4685 /** 4686 * Record the detailed state of a network. 4687 * 4688 * @param state the new {@code DetailedState} 4689 */ 4690 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4691 boolean hidden = false; 4692 4693 if (linkDebouncing || isRoaming()) { 4694 // There is generally a confusion in the system about colluding 4695 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4696 // which leads to multiple confusion. 4697 // 4698 // If link is de-bouncing or roaming, we already have an IP address 4699 // as well we were connected and are doing L2 cycles of 4700 // reconnecting or renewing IP address to check that we still have it 4701 // This L2 link flapping should ne be reflected into the Network state 4702 // which is the state of the WiFi Network visible to Layer 3 and applications 4703 // Note that once debouncing and roaming are completed, we will 4704 // set the Network state to where it should be, or leave it as unchanged 4705 // 4706 hidden = true; 4707 } 4708 if (DBG) { 4709 log("setDetailed state, old =" 4710 + mNetworkInfo.getDetailedState() + " and new state=" + state 4711 + " hidden=" + hidden); 4712 } 4713 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null 4714 && !mWifiInfo.getSSID().equals(WifiSsid.NONE)) { 4715 // Always indicate that SSID has changed 4716 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4717 if (DBG) { 4718 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4719 } 4720 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4721 sendNetworkStateChangeBroadcast(null); 4722 } 4723 } 4724 if (hidden == true) { 4725 return false; 4726 } 4727 4728 if (state != mNetworkInfo.getDetailedState()) { 4729 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4730 if (mNetworkAgent != null) { 4731 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4732 } 4733 sendNetworkStateChangeBroadcast(null); 4734 return true; 4735 } 4736 return false; 4737 } 4738 4739 private DetailedState getNetworkDetailedState() { 4740 return mNetworkInfo.getDetailedState(); 4741 } 4742 4743 private SupplicantState handleSupplicantStateChange(Message message) { 4744 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4745 SupplicantState state = stateChangeResult.state; 4746 // Supplicant state change 4747 // [31-13] Reserved for future use 4748 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4749 // 50023 supplicant_state_changed (custom|1|5) 4750 mWifiInfo.setSupplicantState(state); 4751 // Network id is only valid when we start connecting 4752 if (SupplicantState.isConnecting(state)) { 4753 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4754 } else { 4755 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4756 } 4757 4758 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4759 4760 if (mWhiteListedSsids != null 4761 && mWhiteListedSsids.length > 0 4762 && stateChangeResult.wifiSsid != null) { 4763 String SSID = stateChangeResult.wifiSsid.toString(); 4764 String currentSSID = mWifiInfo.getSSID(); 4765 if (SSID != null && currentSSID != null && !SSID.equals(WifiSsid.NONE)) { 4766 // Remove quote before comparing 4767 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4768 && SSID.charAt(SSID.length() - 1) == '"') { 4769 SSID = SSID.substring(1, SSID.length() - 1); 4770 } 4771 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4772 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4773 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4774 } 4775 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4776 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4777 targetWificonfiguration = 4778 mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4779 transitionTo(mRoamingState); 4780 } 4781 } 4782 } 4783 4784 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4785 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4786 4787 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4788 4789 return state; 4790 } 4791 4792 /** 4793 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4794 * using the interface, stopping DHCP & disabling interface 4795 */ 4796 private void handleNetworkDisconnect() { 4797 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4798 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4799 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4800 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4801 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4802 4803 stopRssiMonitoringOffload(); 4804 4805 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4806 4807 stopIpManager(); 4808 4809 /* Reset data structures */ 4810 mBadLinkspeedcount = 0; 4811 mWifiInfo.reset(); 4812 linkDebouncing = false; 4813 /* Reset roaming parameters */ 4814 mAutoRoaming = false; 4815 4816 /** 4817 * fullBandConnectedTimeIntervalMilli: 4818 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4819 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4820 * Initialize to sane value = 20 seconds 4821 */ 4822 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4823 4824 setNetworkDetailedState(DetailedState.DISCONNECTED); 4825 if (mNetworkAgent != null) { 4826 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4827 mNetworkAgent = null; 4828 } 4829 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4830 4831 /* Clear network properties */ 4832 clearLinkProperties(); 4833 4834 /* Cend event to CM & network change broadcast */ 4835 sendNetworkStateChangeBroadcast(mLastBssid); 4836 4837 /* Cancel auto roam requests */ 4838 autoRoamSetBSSID(mLastNetworkId, "any"); 4839 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4840 mLastBssid = null; 4841 registerDisconnected(); 4842 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4843 } 4844 4845 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4846 /* Socket connection can be lost when we do a graceful shutdown 4847 * or when the driver is hung. Ensure supplicant is stopped here. 4848 */ 4849 if (killSupplicant) { 4850 mWifiMonitor.killSupplicant(mP2pSupported); 4851 } 4852 mWifiNative.closeSupplicantConnection(); 4853 sendSupplicantConnectionChangedBroadcast(false); 4854 setWifiState(WIFI_STATE_DISABLED); 4855 } 4856 4857 void handlePreDhcpSetup() { 4858 if (!mBluetoothConnectionActive) { 4859 /* 4860 * There are problems setting the Wi-Fi driver's power 4861 * mode to active when bluetooth coexistence mode is 4862 * enabled or sense. 4863 * <p> 4864 * We set Wi-Fi to active mode when 4865 * obtaining an IP address because we've found 4866 * compatibility issues with some routers with low power 4867 * mode. 4868 * <p> 4869 * In order for this active power mode to properly be set, 4870 * we disable coexistence mode until we're done with 4871 * obtaining an IP address. One exception is if we 4872 * are currently connected to a headset, since disabling 4873 * coexistence would interrupt that connection. 4874 */ 4875 // Disable the coexistence mode 4876 mWifiNative.setBluetoothCoexistenceMode( 4877 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4878 } 4879 4880 // Disable power save and suspend optimizations during DHCP 4881 // Note: The order here is important for now. Brcm driver changes 4882 // power settings when we control suspend mode optimizations. 4883 // TODO: Remove this comment when the driver is fixed. 4884 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4885 mWifiNative.setPowerSave(false); 4886 4887 // Update link layer stats 4888 getWifiLinkLayerStats(false); 4889 4890 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4891 Message msg = new Message(); 4892 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4893 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4894 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4895 msg.obj = WifiStateMachine.this; 4896 mWifiP2pChannel.sendMessage(msg); 4897 } 4898 4899 void handlePostDhcpSetup() { 4900 /* Restore power save and suspend optimizations */ 4901 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4902 mWifiNative.setPowerSave(true); 4903 4904 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, 4905 WifiP2pServiceImpl.DISABLED); 4906 4907 // Set the coexistence mode back to its default value 4908 mWifiNative.setBluetoothCoexistenceMode( 4909 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4910 } 4911 4912 void connectScanningService() { 4913 if (mWifiScanner == null) { 4914 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4915 } 4916 } 4917 4918 private void handleIPv4Success(DhcpResults dhcpResults) { 4919 if (PDBG) { 4920 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 4921 logd("link address " + dhcpResults.ipAddress); 4922 } 4923 4924 Inet4Address addr; 4925 synchronized (mDhcpResultsLock) { 4926 mDhcpResults = dhcpResults; 4927 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4928 } 4929 4930 if (isRoaming()) { 4931 int previousAddress = mWifiInfo.getIpAddress(); 4932 int newAddress = NetworkUtils.inetAddressToInt(addr); 4933 if (previousAddress != newAddress) { 4934 logd("handleIPv4Success, roaming and address changed" + 4935 mWifiInfo + " got: " + addr); 4936 } 4937 } 4938 mWifiInfo.setInetAddress(addr); 4939 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4940 } 4941 4942 private void handleSuccessfulIpConfiguration() { 4943 mLastSignalLevel = -1; // Force update of signal strength 4944 WifiConfiguration c = getCurrentWifiConfiguration(); 4945 if (c != null) { 4946 // Reset IP failure tracking 4947 c.getNetworkSelectionStatus().clearDisableReasonCounter( 4948 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4949 4950 // Tell the framework whether the newly connected network is trusted or untrusted. 4951 updateCapabilities(c); 4952 } 4953 if (c != null) { 4954 ScanResult result = getCurrentScanResult(); 4955 if (result == null) { 4956 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4957 c.configKey()); 4958 } else { 4959 // Clear the per BSSID failure count 4960 result.numIpConfigFailures = 0; 4961 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4962 // any BSSID, even though it may already have a non zero ip failure count, 4963 // this will typically happen if the user walks away and come back to his arrea 4964 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4965 // in supplicant for a couple of hours or a day 4966 mWifiConfigStore.clearBssidBlacklist(); 4967 } 4968 } 4969 } 4970 4971 private void handleIPv4Failure() { 4972 // TODO: Move this to provisioning failure, not DHCP failure. 4973 // DHCPv4 failure is expected on an IPv6-only network. 4974 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 4975 if (DBG) { 4976 int count = -1; 4977 WifiConfiguration config = getCurrentWifiConfiguration(); 4978 if (config != null) { 4979 count = config.getNetworkSelectionStatus().getDisableReasonCounter( 4980 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4981 } 4982 log("DHCP failure count=" + count); 4983 } 4984 mWifiMetrics.endConnectionEvent( 4985 WifiMetrics.ConnectionEvent.LLF_NONE, 4986 WifiMetricsProto.ConnectionEvent.HLF_DHCP); 4987 synchronized(mDhcpResultsLock) { 4988 if (mDhcpResults != null) { 4989 mDhcpResults.clear(); 4990 } 4991 } 4992 if (PDBG) { 4993 logd("handleIPv4Failure"); 4994 } 4995 } 4996 4997 private void handleIpConfigurationLost() { 4998 mWifiInfo.setInetAddress(null); 4999 mWifiInfo.setMeteredHint(false); 5000 5001 mWifiConfigStore.updateNetworkSelectionStatus(mLastNetworkId, 5002 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 5003 5004 /* DHCP times out after about 30 seconds, we do a 5005 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5006 */ 5007 mWifiNative.disconnect(); 5008 } 5009 5010 // TODO: De-duplicated this and handleIpConfigurationLost(). 5011 private void handleIpReachabilityLost() { 5012 mWifiInfo.setInetAddress(null); 5013 mWifiInfo.setMeteredHint(false); 5014 5015 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5016 5017 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5018 mWifiNative.disconnect(); 5019 } 5020 5021 private int convertFrequencyToChannelNumber(int frequency) { 5022 if (frequency >= 2412 && frequency <= 2484) { 5023 return (frequency -2412) / 5 + 1; 5024 } else if (frequency >= 5170 && frequency <=5825) { 5025 //DFS is included 5026 return (frequency -5170) / 5 + 34; 5027 } else { 5028 return 0; 5029 } 5030 } 5031 5032 private int chooseApChannel(int apBand) { 5033 int apChannel; 5034 int[] channel; 5035 5036 if (apBand == 0) { 5037 ArrayList<Integer> allowed2GChannel = 5038 mWifiApConfigStore.getAllowed2GChannel(); 5039 if (allowed2GChannel == null || allowed2GChannel.size() == 0) { 5040 //most safe channel to use 5041 if(DBG) { 5042 Log.d(TAG, "No specified 2G allowed channel list"); 5043 } 5044 apChannel = 6; 5045 } else { 5046 int index = mRandom.nextInt(allowed2GChannel.size()); 5047 apChannel = allowed2GChannel.get(index).intValue(); 5048 } 5049 } else { 5050 //5G without DFS 5051 channel = mWifiNative.getChannelsForBand(2); 5052 if (channel != null && channel.length > 0) { 5053 apChannel = channel[mRandom.nextInt(channel.length)]; 5054 apChannel = convertFrequencyToChannelNumber(apChannel); 5055 } else { 5056 Log.e(TAG, "SoftAp do not get available channel list"); 5057 apChannel = 0; 5058 } 5059 } 5060 5061 if(DBG) { 5062 Log.d(TAG, "SoftAp set on channel " + apChannel); 5063 } 5064 5065 return apChannel; 5066 } 5067 5068 /* SoftAP configuration */ 5069 private boolean enableSoftAp() { 5070 if (mWifiNative.getInterfaces() != 0) { 5071 if (!mWifiNative.toggleInterface(0)) { 5072 if (DBG) Log.e(TAG, "toggleInterface failed"); 5073 return false; 5074 } 5075 } else { 5076 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5077 } 5078 5079 try { 5080 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5081 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5082 } catch (Exception e) { 5083 Log.e(TAG, "Failed to reload AP firmware " + e); 5084 } 5085 5086 if (mWifiNative.startHal() == false) { 5087 /* starting HAL is optional */ 5088 Log.e(TAG, "Failed to start HAL"); 5089 } 5090 return true; 5091 } 5092 5093 /* Current design is to not set the config on a running hostapd but instead 5094 * stop and start tethering when user changes config on a running access point 5095 * 5096 * TODO: Add control channel setup through hostapd that allows changing config 5097 * on a running daemon 5098 */ 5099 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5100 // set channel 5101 final WifiConfiguration config = new WifiConfiguration(configuration); 5102 5103 if (DBG) { 5104 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5105 } 5106 5107 //We need HAL support to set country code and get available channel list, if HAL is 5108 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5109 if (mWifiNative.isHalStarted()) { 5110 //set country code through HAL Here 5111 String countryCode = getCurrentCountryCode(); 5112 5113 if (countryCode != null) { 5114 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5115 if (config.apBand != 0) { 5116 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5117 //countrycode is mandatory for 5GHz 5118 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5119 return; 5120 } 5121 } 5122 } else { 5123 if (config.apBand != 0) { 5124 //countrycode is mandatory for 5GHz 5125 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5126 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5127 return; 5128 } 5129 } 5130 5131 if (config.apChannel == 0) { 5132 config.apChannel = chooseApChannel(config.apBand); 5133 if (config.apChannel == 0) { 5134 if(mWifiNative.isGetChannelsForBandSupported()) { 5135 //fail to get available channel 5136 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5137 return; 5138 } else { 5139 //for some old device, wifiHal may not be supportedget valid channels are not 5140 //supported 5141 config.apBand = 0; 5142 config.apChannel = 6; 5143 } 5144 } 5145 } 5146 } else { 5147 //for some old device, wifiHal may not be supported 5148 config.apBand = 0; 5149 config.apChannel = 6; 5150 } 5151 // Start hostapd on a separate thread 5152 new Thread(new Runnable() { 5153 public void run() { 5154 try { 5155 mNwService.startAccessPoint(config, mInterfaceName); 5156 } catch (Exception e) { 5157 loge("Exception in softap start " + e); 5158 try { 5159 mNwService.stopAccessPoint(mInterfaceName); 5160 mNwService.startAccessPoint(config, mInterfaceName); 5161 } catch (Exception e1) { 5162 loge("Exception in softap re-start " + e1); 5163 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5164 return; 5165 } 5166 } 5167 if (DBG) log("Soft AP start successful"); 5168 sendMessage(CMD_START_AP_SUCCESS); 5169 } 5170 }).start(); 5171 } 5172 5173 private byte[] macAddressFromString(String macString) { 5174 String[] macBytes = macString.split(":"); 5175 if (macBytes.length != 6) { 5176 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5177 } 5178 byte[] mac = new byte[6]; 5179 for (int i = 0; i < macBytes.length; i++) { 5180 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5181 mac[i] = hexVal.byteValue(); 5182 } 5183 return mac; 5184 } 5185 5186 /* 5187 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5188 * so as to record MAC address of default gateway. 5189 **/ 5190 private String macAddressFromRoute(String ipAddress) { 5191 String macAddress = null; 5192 BufferedReader reader = null; 5193 try { 5194 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5195 5196 // Skip over the line bearing colum titles 5197 String line = reader.readLine(); 5198 5199 while ((line = reader.readLine()) != null) { 5200 String[] tokens = line.split("[ ]+"); 5201 if (tokens.length < 6) { 5202 continue; 5203 } 5204 5205 // ARP column format is 5206 // Address HWType HWAddress Flags Mask IFace 5207 String ip = tokens[0]; 5208 String mac = tokens[3]; 5209 5210 if (ipAddress.equals(ip)) { 5211 macAddress = mac; 5212 break; 5213 } 5214 } 5215 5216 if (macAddress == null) { 5217 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5218 "/proc/net/arp"); 5219 } 5220 5221 } catch (FileNotFoundException e) { 5222 loge("Could not open /proc/net/arp to lookup mac address"); 5223 } catch (IOException e) { 5224 loge("Could not read /proc/net/arp to lookup mac address"); 5225 } finally { 5226 try { 5227 if (reader != null) { 5228 reader.close(); 5229 } 5230 } catch (IOException e) { 5231 // Do nothing 5232 } 5233 } 5234 return macAddress; 5235 5236 } 5237 5238 private class WifiNetworkFactory extends NetworkFactory { 5239 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5240 super(l, c, TAG, f); 5241 } 5242 5243 @Override 5244 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5245 ++mConnectionRequests; 5246 } 5247 5248 @Override 5249 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5250 --mConnectionRequests; 5251 } 5252 5253 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5254 pw.println("mConnectionRequests " + mConnectionRequests); 5255 } 5256 5257 } 5258 5259 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5260 private int mUntrustedReqCount; 5261 5262 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5263 super(l, c, tag, f); 5264 } 5265 5266 @Override 5267 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5268 if (!networkRequest.networkCapabilities.hasCapability( 5269 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5270 if (++mUntrustedReqCount == 1) { 5271 setAllowUntrustedConnections(true); 5272 } 5273 } 5274 } 5275 5276 @Override 5277 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5278 if (!networkRequest.networkCapabilities.hasCapability( 5279 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5280 if (--mUntrustedReqCount == 0) { 5281 setAllowUntrustedConnections(false); 5282 } 5283 } 5284 } 5285 5286 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5287 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5288 } 5289 } 5290 5291 void maybeRegisterNetworkFactory() { 5292 if (mNetworkFactory == null) { 5293 checkAndSetConnectivityInstance(); 5294 if (mCm != null) { 5295 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5296 NETWORKTYPE, mNetworkCapabilitiesFilter); 5297 mNetworkFactory.setScoreFilter(60); 5298 mNetworkFactory.register(); 5299 5300 // We can't filter untrusted network in the capabilities filter because a trusted 5301 // network would still satisfy a request that accepts untrusted ones. 5302 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5303 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5304 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5305 mUntrustedNetworkFactory.register(); 5306 } 5307 } 5308 } 5309 5310 /******************************************************** 5311 * HSM states 5312 *******************************************************/ 5313 5314 class DefaultState extends State { 5315 @Override 5316 public boolean processMessage(Message message) { 5317 logStateAndMessage(message, this); 5318 5319 switch (message.what) { 5320 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5321 AsyncChannel ac = (AsyncChannel) message.obj; 5322 if (ac == mWifiP2pChannel) { 5323 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5324 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5325 } else { 5326 loge("WifiP2pService connection failure, error=" + message.arg1); 5327 } 5328 } else { 5329 loge("got HALF_CONNECTED for unknown channel"); 5330 } 5331 break; 5332 } 5333 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5334 AsyncChannel ac = (AsyncChannel) message.obj; 5335 if (ac == mWifiP2pChannel) { 5336 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5337 //TODO: Re-establish connection to state machine after a delay 5338 // mWifiP2pChannel.connect(mContext, getHandler(), 5339 // mWifiP2pManager.getMessenger()); 5340 } 5341 break; 5342 } 5343 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5344 mBluetoothConnectionActive = (message.arg1 != 5345 BluetoothAdapter.STATE_DISCONNECTED); 5346 break; 5347 /* Synchronous call returns */ 5348 case CMD_PING_SUPPLICANT: 5349 case CMD_ENABLE_NETWORK: 5350 case CMD_ADD_OR_UPDATE_NETWORK: 5351 case CMD_REMOVE_NETWORK: 5352 case CMD_SAVE_CONFIG: 5353 replyToMessage(message, message.what, FAILURE); 5354 break; 5355 case CMD_GET_CAPABILITY_FREQ: 5356 replyToMessage(message, message.what, null); 5357 break; 5358 case CMD_GET_CONFIGURED_NETWORKS: 5359 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5360 break; 5361 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5362 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5363 break; 5364 case CMD_ENABLE_RSSI_POLL: 5365 mEnableRssiPolling = (message.arg1 == 1); 5366 break; 5367 case CMD_SET_HIGH_PERF_MODE: 5368 if (message.arg1 == 1) { 5369 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5370 } else { 5371 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5372 } 5373 break; 5374 case CMD_BOOT_COMPLETED: 5375 maybeRegisterNetworkFactory(); 5376 break; 5377 case CMD_SCREEN_STATE_CHANGED: 5378 handleScreenStateChanged(message.arg1 != 0); 5379 break; 5380 /* Discard */ 5381 case CMD_START_SCAN: 5382 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5383 break; 5384 case CMD_START_SUPPLICANT: 5385 case CMD_STOP_SUPPLICANT: 5386 case CMD_STOP_SUPPLICANT_FAILED: 5387 case CMD_START_DRIVER: 5388 case CMD_STOP_DRIVER: 5389 case CMD_DRIVER_START_TIMED_OUT: 5390 case CMD_START_AP: 5391 case CMD_START_AP_SUCCESS: 5392 case CMD_START_AP_FAILURE: 5393 case CMD_STOP_AP: 5394 case CMD_TETHER_STATE_CHANGE: 5395 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5396 case CMD_DISCONNECT: 5397 case CMD_RECONNECT: 5398 case CMD_REASSOCIATE: 5399 case CMD_RELOAD_TLS_AND_RECONNECT: 5400 case WifiMonitor.SUP_CONNECTION_EVENT: 5401 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5402 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5403 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5404 case WifiMonitor.SCAN_RESULTS_EVENT: 5405 case WifiMonitor.SCAN_FAILED_EVENT: 5406 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5407 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5408 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5409 case WifiMonitor.WPS_OVERLAP_EVENT: 5410 case CMD_BLACKLIST_NETWORK: 5411 case CMD_CLEAR_BLACKLIST: 5412 case CMD_SET_OPERATIONAL_MODE: 5413 case CMD_SET_FREQUENCY_BAND: 5414 case CMD_RSSI_POLL: 5415 case CMD_ENABLE_ALL_NETWORKS: 5416 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5417 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5418 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5419 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5420 case CMD_DISABLE_P2P_RSP: 5421 case WifiMonitor.SUP_REQUEST_IDENTITY: 5422 case CMD_TEST_NETWORK_DISCONNECT: 5423 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5424 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5425 case CMD_TARGET_BSSID: 5426 case CMD_AUTO_CONNECT: 5427 case CMD_AUTO_ROAM: 5428 case CMD_AUTO_SAVE_NETWORK: 5429 case CMD_ASSOCIATED_BSSID: 5430 case CMD_UNWANTED_NETWORK: 5431 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5432 case CMD_ROAM_WATCHDOG_TIMER: 5433 case CMD_DISABLE_EPHEMERAL_NETWORK: 5434 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5435 case CMD_STARTED_PNO_DBG: 5436 case CMD_STARTED_GSCAN_DBG: 5437 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5438 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5439 break; 5440 case CMD_SET_COUNTRY_CODE: 5441 String country = (String) message.obj; 5442 final boolean persist = (message.arg2 == 1); 5443 final int sequence = message.arg1; 5444 if (sequence != mCountryCodeSequence.get()) { 5445 if (DBG) log("set country code ignored due to sequnce num"); 5446 break; 5447 } 5448 5449 if (persist) { 5450 country = country.toUpperCase(Locale.ROOT); 5451 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5452 Settings.Global.putString(mContext.getContentResolver(), 5453 Settings.Global.WIFI_COUNTRY_CODE, 5454 country == null ? "" : country); 5455 } 5456 5457 break; 5458 case CMD_SET_SUSPEND_OPT_ENABLED: 5459 if (message.arg1 == 1) { 5460 mSuspendWakeLock.release(); 5461 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5462 } else { 5463 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5464 } 5465 break; 5466 case WifiMonitor.DRIVER_HUNG_EVENT: 5467 setSupplicantRunning(false); 5468 setSupplicantRunning(true); 5469 break; 5470 case WifiManager.CONNECT_NETWORK: 5471 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5472 WifiManager.BUSY); 5473 break; 5474 case WifiManager.FORGET_NETWORK: 5475 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5476 WifiManager.BUSY); 5477 break; 5478 case WifiManager.SAVE_NETWORK: 5479 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5480 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5481 WifiManager.BUSY); 5482 break; 5483 case WifiManager.START_WPS: 5484 replyToMessage(message, WifiManager.WPS_FAILED, 5485 WifiManager.BUSY); 5486 break; 5487 case WifiManager.CANCEL_WPS: 5488 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5489 WifiManager.BUSY); 5490 break; 5491 case WifiManager.DISABLE_NETWORK: 5492 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5493 WifiManager.BUSY); 5494 break; 5495 case WifiManager.RSSI_PKTCNT_FETCH: 5496 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5497 WifiManager.BUSY); 5498 break; 5499 case CMD_GET_SUPPORTED_FEATURES: 5500 int featureSet = mWifiNative.getSupportedFeatureSet(); 5501 replyToMessage(message, message.what, featureSet); 5502 break; 5503 case CMD_FIRMWARE_ALERT: 5504 if (mWifiLogger != null) { 5505 byte[] buffer = (byte[])message.obj; 5506 mWifiLogger.captureAlertData(message.arg1, buffer); 5507 } 5508 break; 5509 case CMD_GET_LINK_LAYER_STATS: 5510 // Not supported hence reply with error message 5511 replyToMessage(message, message.what, null); 5512 break; 5513 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5514 NetworkInfo info = (NetworkInfo) message.obj; 5515 mP2pConnected.set(info.isConnected()); 5516 break; 5517 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5518 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5519 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5520 break; 5521 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5522 case CMD_UPDATE_LINKPROPERTIES: 5523 updateLinkProperties((LinkProperties) message.obj); 5524 break; 5525 case CMD_GET_MATCHING_CONFIG: 5526 replyToMessage(message, message.what); 5527 break; 5528 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5529 case CMD_IP_CONFIGURATION_LOST: 5530 case CMD_IP_REACHABILITY_LOST: 5531 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5532 break; 5533 case CMD_GET_CONNECTION_STATISTICS: 5534 replyToMessage(message, message.what, mWifiConnectionStatistics); 5535 break; 5536 case CMD_REMOVE_APP_CONFIGURATIONS: 5537 deferMessage(message); 5538 break; 5539 case CMD_REMOVE_USER_CONFIGURATIONS: 5540 deferMessage(message); 5541 break; 5542 case CMD_START_IP_PACKET_OFFLOAD: 5543 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5544 message.arg1, 5545 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5546 break; 5547 case CMD_STOP_IP_PACKET_OFFLOAD: 5548 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5549 message.arg1, 5550 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5551 break; 5552 case CMD_START_RSSI_MONITORING_OFFLOAD: 5553 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5554 break; 5555 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5556 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5557 break; 5558 case CMD_USER_SWITCH: 5559 mCurrentUserId = message.arg1; 5560 mWifiConfigStore.handleUserSwitch(); 5561 break; 5562 case CMD_ADD_PASSPOINT_MO: 5563 case CMD_MODIFY_PASSPOINT_MO: 5564 case CMD_QUERY_OSU_ICON: 5565 case CMD_MATCH_PROVIDER_NETWORK: 5566 /* reply with arg1 = 0 - it returns API failure to the calling app 5567 * (message.what is not looked at) 5568 */ 5569 replyToMessage(message, message.what); 5570 break; 5571 default: 5572 loge("Error! unhandled message" + message); 5573 break; 5574 } 5575 return HANDLED; 5576 } 5577 } 5578 5579 class InitialState extends State { 5580 @Override 5581 public void enter() { 5582 mWifiNative.stopHal(); 5583 mWifiNative.unloadDriver(); 5584 if (mWifiP2pChannel == null) { 5585 mWifiP2pChannel = new AsyncChannel(); 5586 mWifiP2pChannel.connect(mContext, getHandler(), 5587 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5588 } 5589 5590 if (mWifiApConfigStore == null) { 5591 mWifiApConfigStore = mFacade.makeApConfigStore(mContext); 5592 } 5593 5594 if (mWifiConfigStore.enableHalBasedPno.get()) { 5595 // make sure developer Settings are in sync with the config option 5596 mHalBasedPnoEnableInDevSettings = true; 5597 } 5598 } 5599 @Override 5600 public boolean processMessage(Message message) { 5601 logStateAndMessage(message, this); 5602 switch (message.what) { 5603 case CMD_START_SUPPLICANT: 5604 if (mWifiNative.loadDriver()) { 5605 try { 5606 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5607 } catch (Exception e) { 5608 loge("Failed to reload STA firmware " + e); 5609 // Continue 5610 } 5611 5612 try { 5613 // A runtime crash can leave the interface up and 5614 // IP addresses configured, and this affects 5615 // connectivity when supplicant starts up. 5616 // Ensure interface is down and we have no IP 5617 // addresses before a supplicant start. 5618 mNwService.setInterfaceDown(mInterfaceName); 5619 mNwService.clearInterfaceAddresses(mInterfaceName); 5620 5621 // Set privacy extensions 5622 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5623 5624 // IPv6 is enabled only as long as access point is connected since: 5625 // - IPv6 addresses and routes stick around after disconnection 5626 // - kernel is unaware when connected and fails to start IPv6 negotiation 5627 // - kernel can start autoconfiguration when 802.1x is not complete 5628 mNwService.disableIpv6(mInterfaceName); 5629 } catch (RemoteException re) { 5630 loge("Unable to change interface settings: " + re); 5631 } catch (IllegalStateException ie) { 5632 loge("Unable to change interface settings: " + ie); 5633 } 5634 5635 /* Stop a running supplicant after a runtime restart 5636 * Avoids issues with drivers that do not handle interface down 5637 * on a running supplicant properly. 5638 */ 5639 mWifiMonitor.killSupplicant(mP2pSupported); 5640 5641 if (mWifiNative.startHal() == false) { 5642 /* starting HAL is optional */ 5643 loge("Failed to start HAL"); 5644 } 5645 5646 if (mWifiNative.startSupplicant(mP2pSupported)) { 5647 setWifiState(WIFI_STATE_ENABLING); 5648 if (DBG) log("Supplicant start successful"); 5649 mWifiMonitor.startMonitoring(mInterfaceName); 5650 transitionTo(mSupplicantStartingState); 5651 } else { 5652 loge("Failed to start supplicant!"); 5653 } 5654 } else { 5655 loge("Failed to load driver"); 5656 } 5657 break; 5658 case CMD_START_AP: 5659 if (mWifiNative.loadDriver() == false) { 5660 loge("Failed to load driver for softap"); 5661 } else { 5662 if (enableSoftAp() == true) { 5663 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5664 transitionTo(mSoftApStartingState); 5665 } else { 5666 setWifiApState(WIFI_AP_STATE_FAILED, 5667 WifiManager.SAP_START_FAILURE_GENERAL); 5668 transitionTo(mInitialState); 5669 } 5670 } 5671 break; 5672 default: 5673 return NOT_HANDLED; 5674 } 5675 return HANDLED; 5676 } 5677 } 5678 5679 class SupplicantStartingState extends State { 5680 private void initializeWpsDetails() { 5681 String detail; 5682 detail = SystemProperties.get("ro.product.name", ""); 5683 if (!mWifiNative.setDeviceName(detail)) { 5684 loge("Failed to set device name " + detail); 5685 } 5686 detail = SystemProperties.get("ro.product.manufacturer", ""); 5687 if (!mWifiNative.setManufacturer(detail)) { 5688 loge("Failed to set manufacturer " + detail); 5689 } 5690 detail = SystemProperties.get("ro.product.model", ""); 5691 if (!mWifiNative.setModelName(detail)) { 5692 loge("Failed to set model name " + detail); 5693 } 5694 detail = SystemProperties.get("ro.product.model", ""); 5695 if (!mWifiNative.setModelNumber(detail)) { 5696 loge("Failed to set model number " + detail); 5697 } 5698 detail = SystemProperties.get("ro.serialno", ""); 5699 if (!mWifiNative.setSerialNumber(detail)) { 5700 loge("Failed to set serial number " + detail); 5701 } 5702 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5703 loge("Failed to set WPS config methods"); 5704 } 5705 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5706 loge("Failed to set primary device type " + mPrimaryDeviceType); 5707 } 5708 } 5709 5710 @Override 5711 public boolean processMessage(Message message) { 5712 logStateAndMessage(message, this); 5713 5714 switch(message.what) { 5715 case WifiMonitor.SUP_CONNECTION_EVENT: 5716 if (DBG) log("Supplicant connection established"); 5717 setWifiState(WIFI_STATE_ENABLED); 5718 mSupplicantRestartCount = 0; 5719 /* Reset the supplicant state to indicate the supplicant 5720 * state is not known at this time */ 5721 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5722 /* Initialize data structures */ 5723 mLastBssid = null; 5724 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5725 mLastSignalLevel = -1; 5726 5727 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5728 /* set frequency band of operation */ 5729 setFrequencyBand(); 5730 mWifiNative.enableSaveConfig(); 5731 mWifiConfigStore.loadAndEnableAllNetworks(); 5732 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5733 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5734 } 5735 initializeWpsDetails(); 5736 5737 sendSupplicantConnectionChangedBroadcast(true); 5738 transitionTo(mDriverStartedState); 5739 break; 5740 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5741 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5742 loge("Failed to setup control channel, restart supplicant"); 5743 mWifiMonitor.killSupplicant(mP2pSupported); 5744 transitionTo(mInitialState); 5745 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5746 } else { 5747 loge("Failed " + mSupplicantRestartCount + 5748 " times to start supplicant, unload driver"); 5749 mSupplicantRestartCount = 0; 5750 setWifiState(WIFI_STATE_UNKNOWN); 5751 transitionTo(mInitialState); 5752 } 5753 break; 5754 case CMD_START_SUPPLICANT: 5755 case CMD_STOP_SUPPLICANT: 5756 case CMD_START_AP: 5757 case CMD_STOP_AP: 5758 case CMD_START_DRIVER: 5759 case CMD_STOP_DRIVER: 5760 case CMD_SET_OPERATIONAL_MODE: 5761 case CMD_SET_COUNTRY_CODE: 5762 case CMD_SET_FREQUENCY_BAND: 5763 case CMD_START_PACKET_FILTERING: 5764 case CMD_STOP_PACKET_FILTERING: 5765 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5766 deferMessage(message); 5767 break; 5768 default: 5769 return NOT_HANDLED; 5770 } 5771 return HANDLED; 5772 } 5773 } 5774 5775 class SupplicantStartedState extends State { 5776 @Override 5777 public void enter() { 5778 /* Wifi is available as long as we have a connection to supplicant */ 5779 mNetworkInfo.setIsAvailable(true); 5780 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5781 5782 int defaultInterval = mContext.getResources().getInteger( 5783 R.integer.config_wifi_supplicant_scan_interval); 5784 5785 mSupplicantScanIntervalMs = mFacade.getLongSetting(mContext, 5786 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5787 defaultInterval); 5788 5789 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5790 mWifiNative.setExternalSim(true); 5791 5792 /* turn on use of DFS channels */ 5793 mWifiNative.setDfsFlag(true); 5794 5795 /* set country code */ 5796 initializeCountryCode(); 5797 5798 setRandomMacOui(); 5799 mWifiNative.enableAutoConnect(false); 5800 } 5801 5802 @Override 5803 public boolean processMessage(Message message) { 5804 logStateAndMessage(message, this); 5805 5806 switch(message.what) { 5807 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5808 if (mP2pSupported) { 5809 transitionTo(mWaitForP2pDisableState); 5810 } else { 5811 transitionTo(mSupplicantStoppingState); 5812 } 5813 break; 5814 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5815 loge("Connection lost, restart supplicant"); 5816 handleSupplicantConnectionLoss(true); 5817 handleNetworkDisconnect(); 5818 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5819 if (mP2pSupported) { 5820 transitionTo(mWaitForP2pDisableState); 5821 } else { 5822 transitionTo(mInitialState); 5823 } 5824 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5825 break; 5826 case WifiMonitor.SCAN_RESULTS_EVENT: 5827 case WifiMonitor.SCAN_FAILED_EVENT: 5828 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5829 noteScanEnd(); 5830 setScanResults(); 5831 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5832 /* Just updated results from full scan, let apps know about this */ 5833 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5834 sendScanResultsAvailableBroadcast(scanSucceeded); 5835 } 5836 mSendScanResultsBroadcast = false; 5837 mIsScanOngoing = false; 5838 mIsFullScanOngoing = false; 5839 if (mBufferedScanMsg.size() > 0) 5840 sendMessage(mBufferedScanMsg.remove()); 5841 break; 5842 case CMD_PING_SUPPLICANT: 5843 boolean ok = mWifiNative.ping(); 5844 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5845 break; 5846 case CMD_GET_CAPABILITY_FREQ: 5847 String freqs = mWifiNative.getFreqCapability(); 5848 replyToMessage(message, message.what, freqs); 5849 break; 5850 case CMD_START_AP: 5851 /* Cannot start soft AP while in client mode */ 5852 loge("Failed to start soft AP with a running supplicant"); 5853 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5854 break; 5855 case CMD_SET_OPERATIONAL_MODE: 5856 mOperationalMode = message.arg1; 5857 mWifiConfigStore. 5858 setAndEnableLastSelectedConfiguration( 5859 WifiConfiguration.INVALID_NETWORK_ID); 5860 break; 5861 case CMD_TARGET_BSSID: 5862 // Trying to associate to this BSSID 5863 if (message.obj != null) { 5864 mTargetRoamBSSID = (String) message.obj; 5865 } 5866 break; 5867 case CMD_GET_LINK_LAYER_STATS: 5868 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5869 if (stats == null) { 5870 // When firmware doesnt support link layer stats, return an empty object 5871 stats = new WifiLinkLayerStats(); 5872 } 5873 replyToMessage(message, message.what, stats); 5874 break; 5875 case CMD_SET_COUNTRY_CODE: 5876 String country = (String) message.obj; 5877 final boolean persist = (message.arg2 == 1); 5878 final int sequence = message.arg1; 5879 if (sequence != mCountryCodeSequence.get()) { 5880 if (DBG) log("set country code ignored due to sequnce num"); 5881 break; 5882 } 5883 5884 country = country.toUpperCase(Locale.ROOT); 5885 5886 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5887 5888 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 5889 if (mWifiNative.setCountryCode(country)) { 5890 mDriverSetCountryCode = country; 5891 } else { 5892 loge("Failed to set country code " + country); 5893 } 5894 } 5895 5896 if (persist) { 5897 Settings.Global.putString(mContext.getContentResolver(), 5898 Settings.Global.WIFI_COUNTRY_CODE, 5899 country == null ? "" : country); 5900 } 5901 5902 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5903 break; 5904 case CMD_RESET_SIM_NETWORKS: 5905 log("resetting EAP-SIM/AKA/AKA' networks since SIM was removed"); 5906 mWifiConfigStore.resetSimNetworks(); 5907 break; 5908 default: 5909 return NOT_HANDLED; 5910 } 5911 return HANDLED; 5912 } 5913 5914 @Override 5915 public void exit() { 5916 mNetworkInfo.setIsAvailable(false); 5917 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5918 } 5919 } 5920 5921 class SupplicantStoppingState extends State { 5922 @Override 5923 public void enter() { 5924 /* Send any reset commands to supplicant before shutting it down */ 5925 handleNetworkDisconnect(); 5926 5927 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5928 if (suppState == null) suppState = "unknown"; 5929 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5930 if (p2pSuppState == null) p2pSuppState = "unknown"; 5931 5932 logd("SupplicantStoppingState: stopSupplicant " 5933 + " init.svc.wpa_supplicant=" + suppState 5934 + " init.svc.p2p_supplicant=" + p2pSuppState); 5935 mWifiMonitor.stopSupplicant(); 5936 5937 /* Send ourselves a delayed message to indicate failure after a wait time */ 5938 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5939 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5940 setWifiState(WIFI_STATE_DISABLING); 5941 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5942 } 5943 @Override 5944 public boolean processMessage(Message message) { 5945 logStateAndMessage(message, this); 5946 5947 switch(message.what) { 5948 case WifiMonitor.SUP_CONNECTION_EVENT: 5949 loge("Supplicant connection received while stopping"); 5950 break; 5951 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5952 if (DBG) log("Supplicant connection lost"); 5953 handleSupplicantConnectionLoss(false); 5954 transitionTo(mInitialState); 5955 break; 5956 case CMD_STOP_SUPPLICANT_FAILED: 5957 if (message.arg1 == mSupplicantStopFailureToken) { 5958 loge("Timed out on a supplicant stop, kill and proceed"); 5959 handleSupplicantConnectionLoss(true); 5960 transitionTo(mInitialState); 5961 } 5962 break; 5963 case CMD_START_SUPPLICANT: 5964 case CMD_STOP_SUPPLICANT: 5965 case CMD_START_AP: 5966 case CMD_STOP_AP: 5967 case CMD_START_DRIVER: 5968 case CMD_STOP_DRIVER: 5969 case CMD_SET_OPERATIONAL_MODE: 5970 case CMD_SET_COUNTRY_CODE: 5971 case CMD_SET_FREQUENCY_BAND: 5972 case CMD_START_PACKET_FILTERING: 5973 case CMD_STOP_PACKET_FILTERING: 5974 deferMessage(message); 5975 break; 5976 default: 5977 return NOT_HANDLED; 5978 } 5979 return HANDLED; 5980 } 5981 } 5982 5983 class DriverStartingState extends State { 5984 private int mTries; 5985 @Override 5986 public void enter() { 5987 mTries = 1; 5988 /* Send ourselves a delayed message to start driver a second time */ 5989 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5990 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5991 } 5992 @Override 5993 public boolean processMessage(Message message) { 5994 logStateAndMessage(message, this); 5995 5996 switch(message.what) { 5997 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5998 SupplicantState state = handleSupplicantStateChange(message); 5999 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6000 * a state that indicates driver has started, it is ready to 6001 * receive driver commands 6002 */ 6003 if (SupplicantState.isDriverActive(state)) { 6004 transitionTo(mDriverStartedState); 6005 } 6006 break; 6007 case CMD_DRIVER_START_TIMED_OUT: 6008 if (message.arg1 == mDriverStartToken) { 6009 if (mTries >= 2) { 6010 loge("Failed to start driver after " + mTries); 6011 transitionTo(mDriverStoppedState); 6012 } else { 6013 loge("Driver start failed, retrying"); 6014 mWakeLock.acquire(); 6015 mWifiNative.startDriver(); 6016 mWakeLock.release(); 6017 6018 ++mTries; 6019 /* Send ourselves a delayed message to start driver again */ 6020 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6021 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6022 } 6023 } 6024 break; 6025 /* Queue driver commands & connection events */ 6026 case CMD_START_DRIVER: 6027 case CMD_STOP_DRIVER: 6028 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6029 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6030 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6031 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6032 case WifiMonitor.WPS_OVERLAP_EVENT: 6033 case CMD_SET_COUNTRY_CODE: 6034 case CMD_SET_FREQUENCY_BAND: 6035 case CMD_START_PACKET_FILTERING: 6036 case CMD_STOP_PACKET_FILTERING: 6037 case CMD_START_SCAN: 6038 case CMD_DISCONNECT: 6039 case CMD_REASSOCIATE: 6040 case CMD_RECONNECT: 6041 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6042 deferMessage(message); 6043 break; 6044 case WifiMonitor.SCAN_RESULTS_EVENT: 6045 case WifiMonitor.SCAN_FAILED_EVENT: 6046 // Loose scan results obtained in Driver Starting state, they can only confuse 6047 // the state machine 6048 break; 6049 default: 6050 return NOT_HANDLED; 6051 } 6052 return HANDLED; 6053 } 6054 } 6055 6056 class DriverStartedState extends State { 6057 @Override 6058 public void enter() { 6059 6060 if (PDBG) { 6061 logd("DriverStartedState enter"); 6062 } 6063 6064 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6065 mIsRunning = true; 6066 updateBatteryWorkSource(null); 6067 /** 6068 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6069 * When this mode is on, some of the low-level scan parameters used by the 6070 * driver are changed to reduce interference with bluetooth 6071 */ 6072 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6073 /* initialize network state */ 6074 setNetworkDetailedState(DetailedState.DISCONNECTED); 6075 6076 /* Remove any filtering on Multicast v6 at start */ 6077 mWifiNative.stopFilteringMulticastV6Packets(); 6078 6079 /* Reset Multicast v4 filtering state */ 6080 if (mFilteringMulticastV4Packets.get()) { 6081 mWifiNative.startFilteringMulticastV4Packets(); 6082 } else { 6083 mWifiNative.stopFilteringMulticastV4Packets(); 6084 } 6085 6086 if (mOperationalMode != CONNECT_MODE) { 6087 mWifiNative.disconnect(); 6088 mWifiConfigStore.disableAllNetworks(); 6089 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6090 setWifiState(WIFI_STATE_DISABLED); 6091 } 6092 transitionTo(mScanModeState); 6093 } else { 6094 6095 // Status pulls in the current supplicant state and network connection state 6096 // events over the monitor connection. This helps framework sync up with 6097 // current supplicant state 6098 // TODO: actually check th supplicant status string and make sure the supplicant 6099 // is in disconnecte4d state. 6100 mWifiNative.status(); 6101 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6102 transitionTo(mDisconnectedState); 6103 transitionTo(mDisconnectedState); 6104 } 6105 6106 // We may have missed screen update at boot 6107 if (mScreenBroadcastReceived.get() == false) { 6108 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6109 Context.POWER_SERVICE); 6110 handleScreenStateChanged(powerManager.isScreenOn()); 6111 } else { 6112 // Set the right suspend mode settings 6113 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6114 && mUserWantsSuspendOpt.get()); 6115 } 6116 mWifiNative.setPowerSave(true); 6117 6118 if (mP2pSupported) { 6119 if (mOperationalMode == CONNECT_MODE) { 6120 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6121 } else { 6122 // P2P statemachine starts in disabled state, and is not enabled until 6123 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6124 // keep it disabled. 6125 } 6126 } 6127 6128 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6129 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6130 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6131 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6132 6133 mHalFeatureSet = mWifiNative.getSupportedFeatureSet(); 6134 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6135 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6136 mHalBasedPnoDriverSupported = true; 6137 } 6138 6139 // Enable link layer stats gathering 6140 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6141 6142 if (PDBG) { 6143 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6144 + " feature=" + mHalFeatureSet); 6145 } 6146 } 6147 6148 @Override 6149 public boolean processMessage(Message message) { 6150 logStateAndMessage(message, this); 6151 6152 switch(message.what) { 6153 case CMD_START_SCAN: 6154 handleScanRequest(message); 6155 break; 6156 case CMD_SET_FREQUENCY_BAND: 6157 int band = message.arg1; 6158 if (DBG) log("set frequency band " + band); 6159 if (mWifiNative.setBand(band)) { 6160 6161 if (PDBG) logd("did set frequency band " + band); 6162 6163 mFrequencyBand.set(band); 6164 // Flush old data - like scan results 6165 mWifiNative.bssFlush(); 6166 6167 if (PDBG) logd("done set frequency band " + band); 6168 6169 } else { 6170 loge("Failed to set frequency band " + band); 6171 } 6172 break; 6173 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6174 mBluetoothConnectionActive = (message.arg1 != 6175 BluetoothAdapter.STATE_DISCONNECTED); 6176 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6177 break; 6178 case CMD_STOP_DRIVER: 6179 int mode = message.arg1; 6180 6181 log("stop driver"); 6182 mWifiConfigStore.disableAllNetworks(); 6183 6184 if (getCurrentState() != mDisconnectedState) { 6185 mWifiNative.disconnect(); 6186 handleNetworkDisconnect(); 6187 } 6188 mWakeLock.acquire(); 6189 mWifiNative.stopDriver(); 6190 mWakeLock.release(); 6191 if (mP2pSupported) { 6192 transitionTo(mWaitForP2pDisableState); 6193 } else { 6194 transitionTo(mDriverStoppingState); 6195 } 6196 break; 6197 case CMD_START_DRIVER: 6198 if (mOperationalMode == CONNECT_MODE) { 6199 mWifiConfigStore.enableAllNetworks(); 6200 } 6201 break; 6202 case CMD_START_PACKET_FILTERING: 6203 if (message.arg1 == MULTICAST_V6) { 6204 mWifiNative.startFilteringMulticastV6Packets(); 6205 } else if (message.arg1 == MULTICAST_V4) { 6206 mWifiNative.startFilteringMulticastV4Packets(); 6207 } else { 6208 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6209 } 6210 break; 6211 case CMD_STOP_PACKET_FILTERING: 6212 if (message.arg1 == MULTICAST_V6) { 6213 mWifiNative.stopFilteringMulticastV6Packets(); 6214 } else if (message.arg1 == MULTICAST_V4) { 6215 mWifiNative.stopFilteringMulticastV4Packets(); 6216 } else { 6217 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6218 } 6219 break; 6220 case CMD_SET_SUSPEND_OPT_ENABLED: 6221 if (message.arg1 == 1) { 6222 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6223 mSuspendWakeLock.release(); 6224 } else { 6225 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6226 } 6227 break; 6228 case CMD_SET_HIGH_PERF_MODE: 6229 if (message.arg1 == 1) { 6230 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6231 } else { 6232 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6233 } 6234 break; 6235 case CMD_ENABLE_TDLS: 6236 if (message.obj != null) { 6237 String remoteAddress = (String) message.obj; 6238 boolean enable = (message.arg1 == 1); 6239 mWifiNative.startTdls(remoteAddress, enable); 6240 } 6241 break; 6242 case WifiMonitor.ANQP_DONE_EVENT: 6243 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6244 break; 6245 case CMD_STOP_IP_PACKET_OFFLOAD: { 6246 int slot = message.arg1; 6247 int ret = stopWifiIPPacketOffload(slot); 6248 if (mNetworkAgent != null) { 6249 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6250 } 6251 break; 6252 } 6253 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6254 mWifiConfigStore.notifyIconReceived((IconEvent) message.obj); 6255 break; 6256 case WifiMonitor.HS20_REMEDIATION_EVENT: 6257 mWifiConfigStore.wnmFrameReceived((WnmData) message.obj); 6258 break; 6259 default: 6260 return NOT_HANDLED; 6261 } 6262 return HANDLED; 6263 } 6264 @Override 6265 public void exit() { 6266 6267 mWifiLogger.stopLogging(); 6268 6269 mIsRunning = false; 6270 updateBatteryWorkSource(null); 6271 mScanResults = new ArrayList<>(); 6272 6273 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6274 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6275 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6276 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6277 noteScanEnd(); // wrap up any pending request. 6278 mBufferedScanMsg.clear(); 6279 } 6280 } 6281 6282 class WaitForP2pDisableState extends State { 6283 private State mTransitionToState; 6284 @Override 6285 public void enter() { 6286 switch (getCurrentMessage().what) { 6287 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6288 mTransitionToState = mInitialState; 6289 break; 6290 case CMD_STOP_DRIVER: 6291 mTransitionToState = mDriverStoppingState; 6292 break; 6293 case CMD_STOP_SUPPLICANT: 6294 mTransitionToState = mSupplicantStoppingState; 6295 break; 6296 default: 6297 mTransitionToState = mDriverStoppingState; 6298 break; 6299 } 6300 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6301 } 6302 @Override 6303 public boolean processMessage(Message message) { 6304 logStateAndMessage(message, this); 6305 6306 switch(message.what) { 6307 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6308 transitionTo(mTransitionToState); 6309 break; 6310 /* Defer wifi start/shut and driver commands */ 6311 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6312 case CMD_START_SUPPLICANT: 6313 case CMD_STOP_SUPPLICANT: 6314 case CMD_START_AP: 6315 case CMD_STOP_AP: 6316 case CMD_START_DRIVER: 6317 case CMD_STOP_DRIVER: 6318 case CMD_SET_OPERATIONAL_MODE: 6319 case CMD_SET_COUNTRY_CODE: 6320 case CMD_SET_FREQUENCY_BAND: 6321 case CMD_START_PACKET_FILTERING: 6322 case CMD_STOP_PACKET_FILTERING: 6323 case CMD_START_SCAN: 6324 case CMD_DISCONNECT: 6325 case CMD_REASSOCIATE: 6326 case CMD_RECONNECT: 6327 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6328 deferMessage(message); 6329 break; 6330 default: 6331 return NOT_HANDLED; 6332 } 6333 return HANDLED; 6334 } 6335 } 6336 6337 class DriverStoppingState extends State { 6338 @Override 6339 public boolean processMessage(Message message) { 6340 logStateAndMessage(message, this); 6341 6342 switch(message.what) { 6343 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6344 SupplicantState state = handleSupplicantStateChange(message); 6345 if (state == SupplicantState.INTERFACE_DISABLED) { 6346 transitionTo(mDriverStoppedState); 6347 } 6348 break; 6349 /* Queue driver commands */ 6350 case CMD_START_DRIVER: 6351 case CMD_STOP_DRIVER: 6352 case CMD_SET_COUNTRY_CODE: 6353 case CMD_SET_FREQUENCY_BAND: 6354 case CMD_START_PACKET_FILTERING: 6355 case CMD_STOP_PACKET_FILTERING: 6356 case CMD_START_SCAN: 6357 case CMD_DISCONNECT: 6358 case CMD_REASSOCIATE: 6359 case CMD_RECONNECT: 6360 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6361 deferMessage(message); 6362 break; 6363 default: 6364 return NOT_HANDLED; 6365 } 6366 return HANDLED; 6367 } 6368 } 6369 6370 class DriverStoppedState extends State { 6371 @Override 6372 public boolean processMessage(Message message) { 6373 logStateAndMessage(message, this); 6374 switch (message.what) { 6375 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6376 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6377 SupplicantState state = stateChangeResult.state; 6378 // A WEXT bug means that we can be back to driver started state 6379 // unexpectedly 6380 if (SupplicantState.isDriverActive(state)) { 6381 transitionTo(mDriverStartedState); 6382 } 6383 break; 6384 case CMD_START_DRIVER: 6385 mWakeLock.acquire(); 6386 mWifiNative.startDriver(); 6387 mWakeLock.release(); 6388 transitionTo(mDriverStartingState); 6389 break; 6390 default: 6391 return NOT_HANDLED; 6392 } 6393 return HANDLED; 6394 } 6395 } 6396 6397 class ScanModeState extends State { 6398 private int mLastOperationMode; 6399 @Override 6400 public void enter() { 6401 mLastOperationMode = mOperationalMode; 6402 } 6403 @Override 6404 public boolean processMessage(Message message) { 6405 logStateAndMessage(message, this); 6406 6407 switch(message.what) { 6408 case CMD_SET_OPERATIONAL_MODE: 6409 if (message.arg1 == CONNECT_MODE) { 6410 6411 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6412 setWifiState(WIFI_STATE_ENABLED); 6413 // Load and re-enable networks when going back to enabled state 6414 // This is essential for networks to show up after restore 6415 mWifiConfigStore.loadAndEnableAllNetworks(); 6416 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6417 } else { 6418 mWifiConfigStore.enableAllNetworks(); 6419 } 6420 // start a scan to trigger Quality network selection 6421 startScan(ENABLE_WIFI, 0, null, null); 6422 6423 // Loose last selection choice since user toggled WiFi 6424 mWifiConfigStore. 6425 setAndEnableLastSelectedConfiguration( 6426 WifiConfiguration.INVALID_NETWORK_ID); 6427 6428 mOperationalMode = CONNECT_MODE; 6429 transitionTo(mDisconnectedState); 6430 } else { 6431 // Nothing to do 6432 return HANDLED; 6433 } 6434 break; 6435 // Handle scan. All the connection related commands are 6436 // handled only in ConnectModeState 6437 case CMD_START_SCAN: 6438 handleScanRequest(message); 6439 break; 6440 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6441 SupplicantState state = handleSupplicantStateChange(message); 6442 if(DBG) log("SupplicantState= " + state); 6443 break; 6444 default: 6445 return NOT_HANDLED; 6446 } 6447 return HANDLED; 6448 } 6449 } 6450 6451 6452 String smToString(Message message) { 6453 return smToString(message.what); 6454 } 6455 6456 String smToString(int what) { 6457 String s = "unknown"; 6458 switch (what) { 6459 case WifiMonitor.DRIVER_HUNG_EVENT: 6460 s = "DRIVER_HUNG_EVENT"; 6461 break; 6462 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6463 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6464 break; 6465 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6466 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6467 break; 6468 case CMD_SET_FREQUENCY_BAND: 6469 s = "CMD_SET_FREQUENCY_BAND"; 6470 break; 6471 case CMD_DELAYED_NETWORK_DISCONNECT: 6472 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6473 break; 6474 case CMD_TEST_NETWORK_DISCONNECT: 6475 s = "CMD_TEST_NETWORK_DISCONNECT"; 6476 break; 6477 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6478 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6479 break; 6480 case CMD_DISABLE_EPHEMERAL_NETWORK: 6481 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6482 break; 6483 case CMD_START_DRIVER: 6484 s = "CMD_START_DRIVER"; 6485 break; 6486 case CMD_STOP_DRIVER: 6487 s = "CMD_STOP_DRIVER"; 6488 break; 6489 case CMD_STOP_SUPPLICANT: 6490 s = "CMD_STOP_SUPPLICANT"; 6491 break; 6492 case CMD_STOP_SUPPLICANT_FAILED: 6493 s = "CMD_STOP_SUPPLICANT_FAILED"; 6494 break; 6495 case CMD_START_SUPPLICANT: 6496 s = "CMD_START_SUPPLICANT"; 6497 break; 6498 case CMD_TETHER_STATE_CHANGE: 6499 s = "CMD_TETHER_STATE_CHANGE"; 6500 break; 6501 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6502 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6503 break; 6504 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6505 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6506 break; 6507 case CMD_ADD_OR_UPDATE_NETWORK: 6508 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6509 break; 6510 case CMD_REMOVE_NETWORK: 6511 s = "CMD_REMOVE_NETWORK"; 6512 break; 6513 case CMD_ENABLE_NETWORK: 6514 s = "CMD_ENABLE_NETWORK"; 6515 break; 6516 case CMD_ENABLE_ALL_NETWORKS: 6517 s = "CMD_ENABLE_ALL_NETWORKS"; 6518 break; 6519 case CMD_AUTO_CONNECT: 6520 s = "CMD_AUTO_CONNECT"; 6521 break; 6522 case CMD_AUTO_ROAM: 6523 s = "CMD_AUTO_ROAM"; 6524 break; 6525 case CMD_AUTO_SAVE_NETWORK: 6526 s = "CMD_AUTO_SAVE_NETWORK"; 6527 break; 6528 case CMD_BOOT_COMPLETED: 6529 s = "CMD_BOOT_COMPLETED"; 6530 break; 6531 case DhcpStateMachine.CMD_START_DHCP: 6532 s = "CMD_START_DHCP"; 6533 break; 6534 case DhcpStateMachine.CMD_STOP_DHCP: 6535 s = "CMD_STOP_DHCP"; 6536 break; 6537 case DhcpStateMachine.CMD_RENEW_DHCP: 6538 s = "CMD_RENEW_DHCP"; 6539 break; 6540 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6541 s = "CMD_PRE_DHCP_ACTION"; 6542 break; 6543 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6544 s = "CMD_POST_DHCP_ACTION"; 6545 break; 6546 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6547 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6548 break; 6549 case DhcpStateMachine.CMD_ON_QUIT: 6550 s = "CMD_ON_QUIT"; 6551 break; 6552 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6553 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6554 break; 6555 case WifiManager.DISABLE_NETWORK: 6556 s = "WifiManager.DISABLE_NETWORK"; 6557 break; 6558 case CMD_BLACKLIST_NETWORK: 6559 s = "CMD_BLACKLIST_NETWORK"; 6560 break; 6561 case CMD_CLEAR_BLACKLIST: 6562 s = "CMD_CLEAR_BLACKLIST"; 6563 break; 6564 case CMD_SAVE_CONFIG: 6565 s = "CMD_SAVE_CONFIG"; 6566 break; 6567 case CMD_GET_CONFIGURED_NETWORKS: 6568 s = "CMD_GET_CONFIGURED_NETWORKS"; 6569 break; 6570 case CMD_GET_SUPPORTED_FEATURES: 6571 s = "CMD_GET_SUPPORTED_FEATURES"; 6572 break; 6573 case CMD_UNWANTED_NETWORK: 6574 s = "CMD_UNWANTED_NETWORK"; 6575 break; 6576 case CMD_NETWORK_STATUS: 6577 s = "CMD_NETWORK_STATUS"; 6578 break; 6579 case CMD_GET_LINK_LAYER_STATS: 6580 s = "CMD_GET_LINK_LAYER_STATS"; 6581 break; 6582 case CMD_GET_MATCHING_CONFIG: 6583 s = "CMD_GET_MATCHING_CONFIG"; 6584 break; 6585 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6586 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6587 break; 6588 case CMD_DISCONNECT: 6589 s = "CMD_DISCONNECT"; 6590 break; 6591 case CMD_RECONNECT: 6592 s = "CMD_RECONNECT"; 6593 break; 6594 case CMD_REASSOCIATE: 6595 s = "CMD_REASSOCIATE"; 6596 break; 6597 case CMD_GET_CONNECTION_STATISTICS: 6598 s = "CMD_GET_CONNECTION_STATISTICS"; 6599 break; 6600 case CMD_SET_HIGH_PERF_MODE: 6601 s = "CMD_SET_HIGH_PERF_MODE"; 6602 break; 6603 case CMD_SET_COUNTRY_CODE: 6604 s = "CMD_SET_COUNTRY_CODE"; 6605 break; 6606 case CMD_ENABLE_RSSI_POLL: 6607 s = "CMD_ENABLE_RSSI_POLL"; 6608 break; 6609 case CMD_RSSI_POLL: 6610 s = "CMD_RSSI_POLL"; 6611 break; 6612 case CMD_START_PACKET_FILTERING: 6613 s = "CMD_START_PACKET_FILTERING"; 6614 break; 6615 case CMD_STOP_PACKET_FILTERING: 6616 s = "CMD_STOP_PACKET_FILTERING"; 6617 break; 6618 case CMD_SET_SUSPEND_OPT_ENABLED: 6619 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6620 break; 6621 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6622 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6623 break; 6624 case CMD_UPDATE_LINKPROPERTIES: 6625 s = "CMD_UPDATE_LINKPROPERTIES"; 6626 break; 6627 case CMD_RELOAD_TLS_AND_RECONNECT: 6628 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6629 break; 6630 case WifiManager.CONNECT_NETWORK: 6631 s = "CONNECT_NETWORK"; 6632 break; 6633 case WifiManager.SAVE_NETWORK: 6634 s = "SAVE_NETWORK"; 6635 break; 6636 case WifiManager.FORGET_NETWORK: 6637 s = "FORGET_NETWORK"; 6638 break; 6639 case WifiMonitor.SUP_CONNECTION_EVENT: 6640 s = "SUP_CONNECTION_EVENT"; 6641 break; 6642 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6643 s = "SUP_DISCONNECTION_EVENT"; 6644 break; 6645 case WifiMonitor.SCAN_RESULTS_EVENT: 6646 s = "SCAN_RESULTS_EVENT"; 6647 break; 6648 case WifiMonitor.SCAN_FAILED_EVENT: 6649 s = "SCAN_FAILED_EVENT"; 6650 break; 6651 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6652 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6653 break; 6654 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6655 s = "AUTHENTICATION_FAILURE_EVENT"; 6656 break; 6657 case WifiMonitor.SSID_TEMP_DISABLED: 6658 s = "SSID_TEMP_DISABLED"; 6659 break; 6660 case WifiMonitor.SSID_REENABLED: 6661 s = "SSID_REENABLED"; 6662 break; 6663 case WifiMonitor.WPS_SUCCESS_EVENT: 6664 s = "WPS_SUCCESS_EVENT"; 6665 break; 6666 case WifiMonitor.WPS_FAIL_EVENT: 6667 s = "WPS_FAIL_EVENT"; 6668 break; 6669 case WifiMonitor.SUP_REQUEST_IDENTITY: 6670 s = "SUP_REQUEST_IDENTITY"; 6671 break; 6672 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6673 s = "NETWORK_CONNECTION_EVENT"; 6674 break; 6675 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6676 s = "NETWORK_DISCONNECTION_EVENT"; 6677 break; 6678 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6679 s = "ASSOCIATION_REJECTION_EVENT"; 6680 break; 6681 case WifiMonitor.ANQP_DONE_EVENT: 6682 s = "WifiMonitor.ANQP_DONE_EVENT"; 6683 break; 6684 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6685 s = "WifiMonitor.RX_HS20_ANQP_ICON_EVENT"; 6686 break; 6687 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6688 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6689 break; 6690 case WifiMonitor.HS20_REMEDIATION_EVENT: 6691 s = "WifiMonitor.HS20_REMEDIATION_EVENT"; 6692 break; 6693 case WifiMonitor.GAS_QUERY_START_EVENT: 6694 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6695 break; 6696 case CMD_SET_OPERATIONAL_MODE: 6697 s = "CMD_SET_OPERATIONAL_MODE"; 6698 break; 6699 case CMD_START_SCAN: 6700 s = "CMD_START_SCAN"; 6701 break; 6702 case CMD_DISABLE_P2P_RSP: 6703 s = "CMD_DISABLE_P2P_RSP"; 6704 break; 6705 case CMD_DISABLE_P2P_REQ: 6706 s = "CMD_DISABLE_P2P_REQ"; 6707 break; 6708 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6709 s = "GROUP_CREATING_TIMED_OUT"; 6710 break; 6711 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6712 s = "P2P_CONNECTION_CHANGED"; 6713 break; 6714 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6715 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6716 break; 6717 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6718 s = "P2P.SET_MIRACAST_MODE"; 6719 break; 6720 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6721 s = "P2P.BLOCK_DISCOVERY"; 6722 break; 6723 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6724 s = "P2P.SET_COUNTRY_CODE"; 6725 break; 6726 case WifiManager.CANCEL_WPS: 6727 s = "CANCEL_WPS"; 6728 break; 6729 case WifiManager.CANCEL_WPS_FAILED: 6730 s = "CANCEL_WPS_FAILED"; 6731 break; 6732 case WifiManager.CANCEL_WPS_SUCCEDED: 6733 s = "CANCEL_WPS_SUCCEDED"; 6734 break; 6735 case WifiManager.START_WPS: 6736 s = "START_WPS"; 6737 break; 6738 case WifiManager.START_WPS_SUCCEEDED: 6739 s = "START_WPS_SUCCEEDED"; 6740 break; 6741 case WifiManager.WPS_FAILED: 6742 s = "WPS_FAILED"; 6743 break; 6744 case WifiManager.WPS_COMPLETED: 6745 s = "WPS_COMPLETED"; 6746 break; 6747 case WifiManager.RSSI_PKTCNT_FETCH: 6748 s = "RSSI_PKTCNT_FETCH"; 6749 break; 6750 case CMD_IP_CONFIGURATION_LOST: 6751 s = "CMD_IP_CONFIGURATION_LOST"; 6752 break; 6753 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6754 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6755 break; 6756 case CMD_IP_REACHABILITY_LOST: 6757 s = "CMD_IP_REACHABILITY_LOST"; 6758 break; 6759 case CMD_STATIC_IP_SUCCESS: 6760 s = "CMD_STATIC_IP_SUCCESS"; 6761 break; 6762 case CMD_STATIC_IP_FAILURE: 6763 s = "CMD_STATIC_IP_FAILURE"; 6764 break; 6765 case DhcpStateMachine.DHCP_SUCCESS: 6766 s = "DHCP_SUCCESS"; 6767 break; 6768 case DhcpStateMachine.DHCP_FAILURE: 6769 s = "DHCP_FAILURE"; 6770 break; 6771 case CMD_TARGET_BSSID: 6772 s = "CMD_TARGET_BSSID"; 6773 break; 6774 case CMD_ASSOCIATED_BSSID: 6775 s = "CMD_ASSOCIATED_BSSID"; 6776 break; 6777 case CMD_REMOVE_APP_CONFIGURATIONS: 6778 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6779 break; 6780 case CMD_REMOVE_USER_CONFIGURATIONS: 6781 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6782 break; 6783 case CMD_ROAM_WATCHDOG_TIMER: 6784 s = "CMD_ROAM_WATCHDOG_TIMER"; 6785 break; 6786 case CMD_SCREEN_STATE_CHANGED: 6787 s = "CMD_SCREEN_STATE_CHANGED"; 6788 break; 6789 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6790 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6791 break; 6792 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6793 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6794 break; 6795 case CMD_STARTED_PNO_DBG: 6796 s = "CMD_STARTED_PNO_DBG"; 6797 break; 6798 case CMD_STARTED_GSCAN_DBG: 6799 s = "CMD_STARTED_GSCAN_DBG"; 6800 break; 6801 case CMD_PNO_NETWORK_FOUND: 6802 s = "CMD_PNO_NETWORK_FOUND"; 6803 break; 6804 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6805 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6806 break; 6807 case CMD_START_IP_PACKET_OFFLOAD: 6808 s = "CMD_START_IP_PACKET_OFFLOAD"; 6809 break; 6810 case CMD_STOP_IP_PACKET_OFFLOAD: 6811 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 6812 break; 6813 case CMD_START_RSSI_MONITORING_OFFLOAD: 6814 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 6815 break; 6816 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 6817 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 6818 break; 6819 case CMD_RSSI_THRESHOLD_BREACH: 6820 s = "CMD_RSSI_THRESHOLD_BREACH"; 6821 break; 6822 case CMD_USER_SWITCH: 6823 s = "CMD_USER_SWITCH"; 6824 break; 6825 case CMD_IPV4_PROVISIONING_SUCCESS: 6826 s = "CMD_IPV4_PROVISIONING_SUCCESS"; 6827 break; 6828 case CMD_IPV4_PROVISIONING_FAILURE: 6829 s = "CMD_IPV4_PROVISIONING_FAILURE"; 6830 break; 6831 default: 6832 s = "what:" + Integer.toString(what); 6833 break; 6834 } 6835 return s; 6836 } 6837 6838 void registerConnected() { 6839 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6840 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6841 if (config != null) { 6842 //Here we will clear all disable counters once a network is connected 6843 //records how long this network is connected in future 6844 config.lastConnected = System.currentTimeMillis(); 6845 config.getNetworkSelectionStatus().clearDisableReasonCounter(); 6846 } 6847 mBadLinkspeedcount = 0; 6848 } 6849 } 6850 6851 void registerDisconnected() { 6852 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6853 long now_ms = System.currentTimeMillis(); 6854 // We are switching away from this configuration, 6855 // hence record the time we were connected last 6856 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6857 if (config != null) { 6858 config.lastDisconnected = System.currentTimeMillis(); 6859 if (config.ephemeral) { 6860 // Remove ephemeral WifiConfigurations from file 6861 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6862 } 6863 } 6864 } 6865 } 6866 6867 void noteWifiDisabledWhileAssociated() { 6868 // We got disabled by user while we were associated, make note of it 6869 int rssi = mWifiInfo.getRssi(); 6870 WifiConfiguration config = getCurrentWifiConfiguration(); 6871 if (getCurrentState() == mConnectedState 6872 && rssi != WifiInfo.INVALID_RSSI 6873 && config != null) { 6874 boolean is24GHz = mWifiInfo.is24GHz(); 6875 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 6876 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 6877 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 6878 || (!is24GHz && mWifiInfo.getRssi() 6879 < mWifiConfigStore.thresholdQualifiedRssi5.get()); 6880 boolean isHighRSSI = (is24GHz && rssi 6881 >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 6882 || (!is24GHz && mWifiInfo.getRssi() 6883 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 6884 if (isBadRSSI) { 6885 // Take note that we got disabled while RSSI was Bad 6886 config.numUserTriggeredWifiDisableLowRSSI++; 6887 } else if (isLowRSSI) { 6888 // Take note that we got disabled while RSSI was Low 6889 config.numUserTriggeredWifiDisableBadRSSI++; 6890 } else if (!isHighRSSI) { 6891 // Take note that we got disabled while RSSI was Not high 6892 config.numUserTriggeredWifiDisableNotHighRSSI++; 6893 } 6894 } 6895 } 6896 6897 WifiConfiguration getCurrentWifiConfiguration() { 6898 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6899 return null; 6900 } 6901 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6902 } 6903 6904 ScanResult getCurrentScanResult() { 6905 WifiConfiguration config = getCurrentWifiConfiguration(); 6906 if (config == null) { 6907 return null; 6908 } 6909 String BSSID = mWifiInfo.getBSSID(); 6910 if (BSSID == null) { 6911 BSSID = mTargetRoamBSSID; 6912 } 6913 ScanDetailCache scanDetailCache = 6914 mWifiConfigStore.getScanDetailCache(config); 6915 6916 if (scanDetailCache == null) { 6917 return null; 6918 } 6919 6920 return scanDetailCache.get(BSSID); 6921 } 6922 6923 String getCurrentBSSID() { 6924 if (linkDebouncing) { 6925 return null; 6926 } 6927 return mLastBssid; 6928 } 6929 6930 class ConnectModeState extends State { 6931 6932 @Override 6933 public void enter() { 6934 connectScanningService(); 6935 } 6936 6937 @Override 6938 public boolean processMessage(Message message) { 6939 WifiConfiguration config; 6940 int netId; 6941 boolean ok; 6942 boolean didDisconnect; 6943 String bssid; 6944 String ssid; 6945 NetworkUpdateResult result; 6946 logStateAndMessage(message, this); 6947 6948 switch (message.what) { 6949 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6950 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6951 didBlackListBSSID = false; 6952 bssid = (String) message.obj; 6953 if (bssid == null || TextUtils.isEmpty(bssid)) { 6954 // If BSSID is null, use the target roam BSSID 6955 bssid = mTargetRoamBSSID; 6956 } 6957 if (bssid != null) { 6958 // If we have a BSSID, tell configStore to black list it 6959 synchronized(mScanResultCache) { 6960 didBlackListBSSID = mWifiQualifiedNetworkSelector 6961 .enableBssidForQualitynetworkSelection(bssid, false); 6962 } 6963 } 6964 6965 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 6966 WifiConfiguration.NetworkSelectionStatus 6967 .DISABLED_ASSOCIATION_REJECTION); 6968 6969 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6970 //If rejection occurred while Metrics is tracking a ConnnectionEvent, end it. 6971 mWifiMetrics.endConnectionEvent( 6972 WifiMetrics.ConnectionEvent.LLF_ASSOCIATION_REJECTION, 6973 WifiMetricsProto.ConnectionEvent.HLF_NONE); 6974 break; 6975 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6976 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6977 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6978 if (mTargetNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6979 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 6980 WifiConfiguration.NetworkSelectionStatus 6981 .DISABLED_AUTHENTICATION_FAILURE); 6982 } 6983 //If failure occurred while Metrics is tracking a ConnnectionEvent, end it. 6984 mWifiMetrics.endConnectionEvent( 6985 WifiMetrics.ConnectionEvent.LLF_AUTHENTICATION_FAILURE, 6986 WifiMetricsProto.ConnectionEvent.HLF_NONE); 6987 break; 6988 case WifiMonitor.SSID_TEMP_DISABLED: 6989 Log.e(TAG, "Supplicant SSID temporary disabled:" 6990 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 6991 mWifiConfigStore.updateNetworkSelectionStatus( 6992 message.arg1, 6993 WifiConfiguration.NetworkSelectionStatus 6994 .DISABLED_AUTHENTICATION_FAILURE); 6995 mWifiMetrics.endConnectionEvent( 6996 WifiMetrics.ConnectionEvent.LLF_SSID_TEMP_DISABLED, 6997 WifiMetricsProto.ConnectionEvent.HLF_NONE); 6998 break; 6999 case WifiMonitor.SSID_REENABLED: 7000 Log.d(TAG, "Supplicant SSID reenable:" 7001 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 7002 // Do not re-enable it in Quality Network Selection since framework has its own 7003 // Algorithm of disable/enable 7004 break; 7005 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7006 SupplicantState state = handleSupplicantStateChange(message); 7007 // A driver/firmware hang can now put the interface in a down state. 7008 // We detect the interface going down and recover from it 7009 if (!SupplicantState.isDriverActive(state)) { 7010 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7011 handleNetworkDisconnect(); 7012 } 7013 log("Detected an interface down, restart driver"); 7014 transitionTo(mDriverStoppedState); 7015 sendMessage(CMD_START_DRIVER); 7016 break; 7017 } 7018 7019 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7020 // when authentication times out after a successful connection, 7021 // we can figure this from the supplicant state. If supplicant 7022 // state is DISCONNECTED, but the mNetworkInfo says we are not 7023 // disconnected, we need to handle a disconnection 7024 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7025 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7026 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7027 handleNetworkDisconnect(); 7028 transitionTo(mDisconnectedState); 7029 } 7030 7031 // If we have COMPLETED a connection to a BSSID, start doing 7032 // DNAv4/DNAv6 -style probing for on-link neighbors of 7033 // interest (e.g. routers); harmless if none are configured. 7034 if (state == SupplicantState.COMPLETED) { 7035 mIpManager.confirmConfiguration(); 7036 } 7037 break; 7038 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7039 if (message.arg1 == 1) { 7040 mWifiNative.disconnect(); 7041 mTemporarilyDisconnectWifi = true; 7042 } else { 7043 mWifiNative.reconnect(); 7044 mTemporarilyDisconnectWifi = false; 7045 } 7046 break; 7047 case CMD_ADD_OR_UPDATE_NETWORK: 7048 // Only the current foreground user can modify networks. 7049 if (!isCurrentUserProfile(UserHandle.getUserId(message.sendingUid))) { 7050 loge("Only the current foreground user can modify networks " 7051 + " currentUserId=" + mCurrentUserId 7052 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7053 replyToMessage(message, message.what, FAILURE); 7054 break; 7055 } 7056 7057 config = (WifiConfiguration) message.obj; 7058 7059 if (!recordUidIfAuthorized(config, message.sendingUid, 7060 /* onlyAnnotate */ false)) { 7061 logw("Not authorized to update network " 7062 + " config=" + config.SSID 7063 + " cnid=" + config.networkId 7064 + " uid=" + message.sendingUid); 7065 replyToMessage(message, message.what, FAILURE); 7066 break; 7067 } 7068 7069 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7070 if (res < 0) { 7071 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7072 } else { 7073 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7074 if (curConfig != null && config != null) { 7075 if (curConfig.priority < config.priority 7076 && config.status == WifiConfiguration.Status.ENABLED) { 7077 // Interpret this as a connect attempt 7078 // Set the last selected configuration so as to allow the system to 7079 // stick the last user choice without persisting the choice 7080 mWifiConfigStore.setAndEnableLastSelectedConfiguration(res); 7081 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7082 boolean persist = mWifiConfigStore 7083 .checkConfigOverridePermission(message.sendingUid); 7084 mWifiQualifiedNetworkSelector 7085 .userSelectNetwork(res, persist); 7086 7087 // Remember time of last connection attempt 7088 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7089 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7090 7091 // As a courtesy to the caller, trigger a scan now 7092 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7093 } 7094 } 7095 } 7096 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7097 break; 7098 case CMD_REMOVE_NETWORK: 7099 // Only the current foreground user can modify networks. 7100 if (!isCurrentUserProfile(UserHandle.getUserId(message.sendingUid))) { 7101 loge("Only the current foreground user can modify networks " 7102 + " currentUserId=" + mCurrentUserId 7103 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7104 replyToMessage(message, message.what, FAILURE); 7105 break; 7106 } 7107 netId = message.arg1; 7108 7109 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7110 /* onlyAnnotate */ false)) { 7111 logw("Not authorized to remove network " 7112 + " cnid=" + netId 7113 + " uid=" + message.sendingUid); 7114 replyToMessage(message, message.what, FAILURE); 7115 break; 7116 } 7117 7118 ok = mWifiConfigStore.removeNetwork(message.arg1); 7119 if (!ok) { 7120 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7121 } 7122 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7123 break; 7124 case CMD_ENABLE_NETWORK: 7125 // Only the current foreground user can modify networks. 7126 if (!isCurrentUserProfile(UserHandle.getUserId(message.sendingUid))) { 7127 loge("Only the current foreground user can modify networks " 7128 + " currentUserId=" + mCurrentUserId 7129 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7130 replyToMessage(message, message.what, FAILURE); 7131 break; 7132 } 7133 7134 boolean disableOthers = message.arg2 == 1; 7135 netId = message.arg1; 7136 config = mWifiConfigStore.getWifiConfiguration(netId); 7137 if (config == null) { 7138 loge("No network with id = " + netId); 7139 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7140 replyToMessage(message, message.what, FAILURE); 7141 break; 7142 } 7143 7144 // disable other only means select this network, does not mean all other 7145 // networks need to be disabled 7146 if (disableOthers) { 7147 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7148 // Remember time of last connection attempt 7149 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7150 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7151 } 7152 // Cancel auto roam requests 7153 autoRoamSetBSSID(netId, "any"); 7154 7155 int uid = message.sendingUid; 7156 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7157 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7158 if (!ok) { 7159 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7160 } else if (disableOthers) { 7161 mTargetNetworkId = netId; 7162 } 7163 7164 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7165 break; 7166 case CMD_ENABLE_ALL_NETWORKS: 7167 long time = android.os.SystemClock.elapsedRealtime(); 7168 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7169 mWifiConfigStore.enableAllNetworks(); 7170 mLastEnableAllNetworksTime = time; 7171 } 7172 break; 7173 case WifiManager.DISABLE_NETWORK: 7174 if (mWifiConfigStore.updateNetworkSelectionStatus(message.arg1, 7175 WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WIFI_MANAGER)) { 7176 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7177 } else { 7178 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7179 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7180 WifiManager.ERROR); 7181 } 7182 break; 7183 case CMD_DISABLE_EPHEMERAL_NETWORK: 7184 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7185 if (config != null) { 7186 if (config.networkId == mLastNetworkId) { 7187 // Disconnect and let autojoin reselect a new network 7188 sendMessage(CMD_DISCONNECT); 7189 } 7190 } 7191 break; 7192 case CMD_BLACKLIST_NETWORK: 7193 mWifiConfigStore.blackListBssid((String) message.obj); 7194 break; 7195 case CMD_CLEAR_BLACKLIST: 7196 mWifiConfigStore.clearBssidBlacklist(); 7197 break; 7198 case CMD_SAVE_CONFIG: 7199 ok = mWifiConfigStore.saveConfig(); 7200 7201 if (DBG) logd("did save config " + ok); 7202 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7203 7204 // Inform the backup manager about a data change 7205 IBackupManager ibm = IBackupManager.Stub.asInterface( 7206 mFacade.getService(Context.BACKUP_SERVICE)); 7207 if (ibm != null) { 7208 try { 7209 ibm.dataChanged("com.android.providers.settings"); 7210 } catch (Exception e) { 7211 // Try again later 7212 } 7213 } 7214 break; 7215 case CMD_GET_CONFIGURED_NETWORKS: 7216 replyToMessage(message, message.what, 7217 mWifiConfigStore.getConfiguredNetworks()); 7218 break; 7219 case WifiMonitor.SUP_REQUEST_IDENTITY: 7220 int networkId = message.arg2; 7221 boolean identitySent = false; 7222 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7223 7224 if (targetWificonfiguration != null 7225 && targetWificonfiguration.enterpriseConfig != null) { 7226 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7227 } 7228 7229 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7230 if (targetWificonfiguration != null 7231 && targetWificonfiguration.networkId == networkId 7232 && targetWificonfiguration.allowedKeyManagement 7233 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7234 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7235 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7236 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7237 TelephonyManager tm = (TelephonyManager) 7238 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7239 if (tm != null) { 7240 String imsi = tm.getSubscriberId(); 7241 String mccMnc = ""; 7242 7243 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7244 mccMnc = tm.getSimOperator(); 7245 7246 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7247 7248 if (!identity.isEmpty()) { 7249 mWifiNative.simIdentityResponse(networkId, identity); 7250 identitySent = true; 7251 } 7252 } 7253 } 7254 if (!identitySent) { 7255 // Supplicant lacks credentials to connect to that network, hence black list 7256 ssid = (String) message.obj; 7257 if (targetWificonfiguration != null && ssid != null 7258 && targetWificonfiguration.SSID != null 7259 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7260 mWifiConfigStore.updateNetworkSelectionStatus(targetWificonfiguration, 7261 WifiConfiguration.NetworkSelectionStatus 7262 .DISABLED_AUTHENTICATION_NO_CREDENTIALS); 7263 } 7264 // Disconnect now, as we don't have any way to fullfill 7265 // the supplicant request. 7266 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 7267 WifiConfiguration.INVALID_NETWORK_ID); 7268 mWifiNative.disconnect(); 7269 } 7270 break; 7271 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7272 logd("Received SUP_REQUEST_SIM_AUTH"); 7273 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7274 if (requestData != null) { 7275 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7276 handleGsmAuthRequest(requestData); 7277 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7278 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7279 handle3GAuthRequest(requestData); 7280 } 7281 } else { 7282 loge("Invalid sim auth request"); 7283 } 7284 break; 7285 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7286 replyToMessage(message, message.what, 7287 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7288 break; 7289 case CMD_GET_MATCHING_CONFIG: 7290 replyToMessage(message, message.what, 7291 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7292 break; 7293 /* Do a redundant disconnect without transition */ 7294 case CMD_DISCONNECT: 7295 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7296 (WifiConfiguration.INVALID_NETWORK_ID); 7297 mWifiNative.disconnect(); 7298 break; 7299 case CMD_RECONNECT: 7300 WifiConfiguration candidate = 7301 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(true, 7302 mAllowUntrustedConnections, mScanResults, linkDebouncing, 7303 isConnected(), isDisconnected(), isSupplicantTransientState()); 7304 tryToConnectToNetwork(candidate); 7305 break; 7306 case CMD_REASSOCIATE: 7307 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7308 mWifiNative.reassociate(); 7309 break; 7310 case CMD_RELOAD_TLS_AND_RECONNECT: 7311 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7312 logd("Reconnecting to give a chance to un-connected TLS networks"); 7313 mWifiNative.disconnect(); 7314 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7315 mWifiNative.reconnect(); 7316 } 7317 break; 7318 case CMD_AUTO_ROAM: 7319 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7320 return HANDLED; 7321 case CMD_AUTO_CONNECT: 7322 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7323 * associated status to the STATUS command but somehow-someplace still thinks 7324 * it is associated and thus will ignore select/reconnect command with 7325 * following message: 7326 * "Already associated with the selected network - do nothing" 7327 * 7328 * Hence, sends a disconnect to supplicant first. 7329 */ 7330 didDisconnect = false; 7331 if (getCurrentState() != mDisconnectedState) { 7332 /** Supplicant will ignore the reconnect if we are currently associated, 7333 * hence trigger a disconnect 7334 */ 7335 didDisconnect = true; 7336 mWifiNative.disconnect(); 7337 } 7338 7339 /* connect command coming from auto-join */ 7340 netId = message.arg1; 7341 mTargetNetworkId = netId; 7342 mTargetRoamBSSID = (String) message.obj; 7343 config = mWifiConfigStore.getWifiConfiguration(netId); 7344 logd("CMD_AUTO_CONNECT sup state " 7345 + mSupplicantStateTracker.getSupplicantStateName() 7346 + " my state " + getCurrentState().getName() 7347 + " nid=" + Integer.toString(netId) 7348 + " roam=" + Boolean.toString(mAutoRoaming)); 7349 if (config == null) { 7350 loge("AUTO_CONNECT and no config, bail out..."); 7351 break; 7352 } 7353 7354 /* Make sure we cancel any previous roam request */ 7355 setTargetBssid(config, mTargetRoamBSSID); 7356 7357 /* Save the network config */ 7358 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7359 + " nid=" + Integer.toString(netId)); 7360 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7361 netId = result.getNetworkId(); 7362 logd("CMD_AUTO_CONNECT did save config -> " 7363 + " nid=" + Integer.toString(netId)); 7364 7365 // Since we updated the config,read it back from config store: 7366 config = mWifiConfigStore.getWifiConfiguration(netId); 7367 if (config == null) { 7368 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7369 break; 7370 } 7371 if (netId != config.networkId) { 7372 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7373 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7374 break; 7375 } 7376 7377 if (deferForUserInput(message, netId, false)) { 7378 break; 7379 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7380 WifiConfiguration.USER_BANNED) { 7381 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7382 WifiManager.NOT_AUTHORIZED); 7383 break; 7384 } 7385 7386 // Make sure the network is enabled, since supplicant will not reenable it 7387 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7388 7389 // If we're autojoining a network that the user or an app explicitly selected, 7390 // keep track of the UID that selected it. 7391 // TODO(b/26786318): Keep track of the lastSelectedConfiguration and the 7392 // lastConnectUid on a per-user basis. 7393 int lastConnectUid = WifiConfiguration.UNKNOWN_UID; 7394 if (mWifiConfigStore.isLastSelectedConfiguration(config) 7395 && isCurrentUserProfile(UserHandle.getUserId(config.lastConnectUid))) { 7396 lastConnectUid = config.lastConnectUid; 7397 } 7398 mWifiMetrics.startConnectionEvent(mWifiInfo, config, 7399 WifiMetricsProto.ConnectionEvent.ROAM_NONE); 7400 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7401 lastConnectUid) && mWifiNative.reconnect()) { 7402 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7403 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7404 config = mWifiConfigStore.getWifiConfiguration(netId); 7405 if (config != null 7406 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7407 // If we autojoined a different config than the user selected one, 7408 // it means we could not see the last user selection, 7409 // or that the last user selection was faulty and ended up blacklisted 7410 // for some reason (in which case the user is notified with an error 7411 // message in the Wifi picker), and thus we managed to auto-join away 7412 // from the selected config. -> in that case we need to forget 7413 // the selection because we don't want to abruptly switch back to it. 7414 // 7415 // Note that the user selection is also forgotten after a period of time 7416 // during which the device has been disconnected. 7417 // The default value is 30 minutes : see the code path at bottom of 7418 // setScanResults() function. 7419 mWifiConfigStore. 7420 setAndEnableLastSelectedConfiguration( 7421 WifiConfiguration.INVALID_NETWORK_ID); 7422 mWifiMetrics.setConnectionEventRoamType( 7423 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7424 } 7425 mAutoRoaming = false; 7426 if (isRoaming() || linkDebouncing) { 7427 transitionTo(mRoamingState); 7428 } else if (didDisconnect) { 7429 transitionTo(mDisconnectingState); 7430 } else { 7431 /* Already in disconnected state, nothing to change */ 7432 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7433 int delay = 60 * 1000; 7434 if (VDBG) { 7435 logd("Starting PNO alarm: " + delay); 7436 } 7437 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7438 System.currentTimeMillis() + delay, 7439 mPnoIntent); 7440 } 7441 mRestartAutoJoinOffloadCounter++; 7442 } 7443 } else { 7444 loge("Failed to connect config: " + config + " netId: " + netId); 7445 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7446 WifiManager.ERROR); 7447 mWifiMetrics.endConnectionEvent( 7448 WifiMetrics.ConnectionEvent.LLF_CONNECT_NETWORK_FAILED, 7449 WifiMetricsProto.ConnectionEvent.HLF_NONE); 7450 break; 7451 } 7452 break; 7453 case CMD_REMOVE_APP_CONFIGURATIONS: 7454 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7455 break; 7456 case CMD_REMOVE_USER_CONFIGURATIONS: 7457 mWifiConfigStore.removeNetworksForUser(message.arg1); 7458 break; 7459 case WifiManager.CONNECT_NETWORK: 7460 // Only the current foreground user can modify networks. 7461 if (!isCurrentUserProfile(UserHandle.getUserId(message.sendingUid))) { 7462 loge("Only the current foreground user can modify networks " 7463 + " currentUserId=" + mCurrentUserId 7464 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7465 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7466 WifiManager.NOT_AUTHORIZED); 7467 break; 7468 } 7469 7470 /** 7471 * The connect message can contain a network id passed as arg1 on message or 7472 * or a config passed as obj on message. 7473 * For a new network, a config is passed to create and connect. 7474 * For an existing network, a network id is passed 7475 */ 7476 netId = message.arg1; 7477 config = (WifiConfiguration) message.obj; 7478 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7479 boolean updatedExisting = false; 7480 7481 /* Save the network config */ 7482 if (config != null) { 7483 // When connecting to an access point, WifiStateMachine wants to update the 7484 // relevant config with administrative data. This update should not be 7485 // considered a 'real' update, therefore lockdown by Device Owner must be 7486 // disregarded. 7487 if (!recordUidIfAuthorized(config, message.sendingUid, 7488 /* onlyAnnotate */ true)) { 7489 logw("Not authorized to update network " 7490 + " config=" + config.SSID 7491 + " cnid=" + config.networkId 7492 + " uid=" + message.sendingUid); 7493 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7494 WifiManager.NOT_AUTHORIZED); 7495 break; 7496 } 7497 7498 String configKey = config.configKey(true /* allowCached */); 7499 WifiConfiguration savedConfig = 7500 mWifiConfigStore.getWifiConfiguration(configKey); 7501 if (savedConfig != null) { 7502 // There is an existing config with this netId, but it wasn't exposed 7503 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7504 // getConfiguredNetworks). Remove those bits and update the config. 7505 config = savedConfig; 7506 logd("CONNECT_NETWORK updating existing config with id=" + 7507 config.networkId + " configKey=" + configKey); 7508 config.ephemeral = false; 7509 mWifiConfigStore.updateNetworkSelectionStatus(config, 7510 WifiConfiguration.NetworkSelectionStatus 7511 .NETWORK_SELECTION_ENABLE); 7512 updatedExisting = true; 7513 } 7514 7515 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7516 netId = result.getNetworkId(); 7517 } 7518 config = mWifiConfigStore.getWifiConfiguration(netId); 7519 7520 if (config == null) { 7521 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7522 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7523 + getCurrentState().getName()); 7524 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7525 WifiManager.ERROR); 7526 break; 7527 } 7528 mTargetNetworkId = netId; 7529 autoRoamSetBSSID(netId, "any"); 7530 7531 if (message.sendingUid == Process.WIFI_UID 7532 || message.sendingUid == Process.SYSTEM_UID) { 7533 // As a sanity measure, clear the BSSID in the supplicant network block. 7534 // If system or Wifi Settings want to connect, they will not 7535 // specify the BSSID. 7536 // If an app however had added a BSSID to this configuration, and the BSSID 7537 // was wrong, Then we would forever fail to connect until that BSSID 7538 // is cleaned up. 7539 clearConfigBSSID(config, "CONNECT_NETWORK"); 7540 } 7541 7542 if (deferForUserInput(message, netId, true)) { 7543 break; 7544 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7545 WifiConfiguration.USER_BANNED) { 7546 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7547 WifiManager.NOT_AUTHORIZED); 7548 break; 7549 } 7550 7551 mAutoRoaming = false; 7552 7553 /* Tell network selection the user did try to connect to that network if from 7554 settings */ 7555 boolean persist = 7556 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7557 7558 7559 mWifiConfigStore.setAndEnableLastSelectedConfiguration(netId); 7560 mWifiQualifiedNetworkSelector.userSelectNetwork(netId, persist); 7561 didDisconnect = false; 7562 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7563 && mLastNetworkId != netId) { 7564 /** Supplicant will ignore the reconnect if we are currently associated, 7565 * hence trigger a disconnect 7566 */ 7567 didDisconnect = true; 7568 mWifiNative.disconnect(); 7569 } 7570 7571 // Make sure the network is enabled, since supplicant will not reenable it 7572 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7573 7574 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7575 message.sendingUid) && mWifiNative.reconnect()) { 7576 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7577 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7578 7579 /* The state tracker handles enabling networks upon completion/failure */ 7580 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7581 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7582 if (didDisconnect) { 7583 /* Expect a disconnection from the old connection */ 7584 transitionTo(mDisconnectingState); 7585 } else if (updatedExisting && getCurrentState() == mConnectedState && 7586 getCurrentWifiConfiguration().networkId == netId) { 7587 // Update the current set of network capabilities, but stay in the 7588 // current state. 7589 updateCapabilities(config); 7590 } else { 7591 /** 7592 * Directly go to disconnected state where we 7593 * process the connection events from supplicant 7594 */ 7595 transitionTo(mDisconnectedState); 7596 } 7597 } else { 7598 loge("Failed to connect config: " + config + " netId: " + netId); 7599 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7600 WifiManager.ERROR); 7601 break; 7602 } 7603 break; 7604 case WifiManager.SAVE_NETWORK: 7605 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7606 // Fall thru 7607 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7608 // Only the current foreground user can modify networks. 7609 if (!isCurrentUserProfile(UserHandle.getUserId(message.sendingUid))) { 7610 loge("Only the current foreground user can modify networks " 7611 + " currentUserId=" + mCurrentUserId 7612 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7613 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7614 WifiManager.NOT_AUTHORIZED); 7615 break; 7616 } 7617 7618 lastSavedConfigurationAttempt = null; // Used for debug 7619 config = (WifiConfiguration) message.obj; 7620 if (config == null) { 7621 loge("ERROR: SAVE_NETWORK with null configuration" 7622 + mSupplicantStateTracker.getSupplicantStateName() 7623 + " my state " + getCurrentState().getName()); 7624 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7625 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7626 WifiManager.ERROR); 7627 break; 7628 } 7629 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7630 int nid = config.networkId; 7631 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7632 + " config=" + config.SSID 7633 + " nid=" + config.networkId 7634 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7635 + " my state " + getCurrentState().getName()); 7636 7637 // Only record the uid if this is user initiated 7638 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7639 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7640 /* onlyAnnotate */ false)) { 7641 logw("Not authorized to update network " 7642 + " config=" + config.SSID 7643 + " cnid=" + config.networkId 7644 + " uid=" + message.sendingUid); 7645 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7646 WifiManager.NOT_AUTHORIZED); 7647 break; 7648 } 7649 7650 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7651 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7652 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7653 if (result.hasIpChanged()) { 7654 // The currently connection configuration was changed 7655 // We switched from DHCP to static or from static to DHCP, or the 7656 // static IP address has changed. 7657 log("Reconfiguring IP on connection"); 7658 // TODO: clear addresses and disable IPv6 7659 // to simplify obtainingIpState. 7660 transitionTo(mObtainingIpState); 7661 } 7662 if (result.hasProxyChanged()) { 7663 log("Reconfiguring proxy on connection"); 7664 notifyLinkProperties(); 7665 } 7666 } 7667 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7668 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7669 7670 if (VDBG) { 7671 logd("Success save network nid=" 7672 + Integer.toString(result.getNetworkId())); 7673 } 7674 7675 synchronized(mScanResultCache) { 7676 /** 7677 * If the command comes from WifiManager, then 7678 * tell autojoin the user did try to modify and save that network, 7679 * and interpret the SAVE_NETWORK as a request to connect 7680 */ 7681 boolean user = message.what == WifiManager.SAVE_NETWORK; 7682 7683 // Did this connect come from settings 7684 boolean persistConnect = 7685 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7686 7687 if (user) { 7688 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7689 mWifiConfigStore.writeKnownNetworkHistory(); 7690 } 7691 //Fixme, CMD_AUTO_SAVE_NETWORK can be cleaned 7692 mWifiQualifiedNetworkSelector.userSelectNetwork( 7693 result.getNetworkId(), persistConnect); 7694 candidate = mWifiQualifiedNetworkSelector.selectQualifiedNetwork(true, 7695 mAllowUntrustedConnections, mScanResults, linkDebouncing, 7696 isConnected(), isDisconnected(), isSupplicantTransientState()); 7697 tryToConnectToNetwork(candidate); 7698 } 7699 } else { 7700 loge("Failed to save network"); 7701 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7702 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7703 WifiManager.ERROR); 7704 } 7705 break; 7706 case WifiManager.FORGET_NETWORK: 7707 // Only the current foreground user can modify networks. 7708 if (!isCurrentUserProfile(UserHandle.getUserId(message.sendingUid))) { 7709 loge("Only the current foreground user can modify networks " 7710 + " currentUserId=" + mCurrentUserId 7711 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7712 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7713 WifiManager.NOT_AUTHORIZED); 7714 break; 7715 } 7716 7717 // Debug only, remember last configuration that was forgotten 7718 WifiConfiguration toRemove 7719 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7720 if (toRemove == null) { 7721 lastForgetConfigurationAttempt = null; 7722 } else { 7723 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7724 } 7725 // check that the caller owns this network 7726 netId = message.arg1; 7727 7728 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7729 /* onlyAnnotate */ false)) { 7730 logw("Not authorized to forget network " 7731 + " cnid=" + netId 7732 + " uid=" + message.sendingUid); 7733 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7734 WifiManager.NOT_AUTHORIZED); 7735 break; 7736 } 7737 7738 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7739 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7740 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7741 (WifiConfiguration) message.obj); 7742 } else { 7743 loge("Failed to forget network"); 7744 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7745 WifiManager.ERROR); 7746 } 7747 break; 7748 case WifiManager.START_WPS: 7749 WpsInfo wpsInfo = (WpsInfo) message.obj; 7750 WpsResult wpsResult; 7751 switch (wpsInfo.setup) { 7752 case WpsInfo.PBC: 7753 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7754 break; 7755 case WpsInfo.KEYPAD: 7756 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7757 break; 7758 case WpsInfo.DISPLAY: 7759 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7760 break; 7761 default: 7762 wpsResult = new WpsResult(Status.FAILURE); 7763 loge("Invalid setup for WPS"); 7764 break; 7765 } 7766 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7767 (WifiConfiguration.INVALID_NETWORK_ID); 7768 if (wpsResult.status == Status.SUCCESS) { 7769 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7770 transitionTo(mWpsRunningState); 7771 } else { 7772 loge("Failed to start WPS with config " + wpsInfo.toString()); 7773 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7774 } 7775 break; 7776 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7777 if (DBG) log("Network connection established"); 7778 mLastNetworkId = message.arg1; 7779 mLastBssid = (String) message.obj; 7780 7781 mWifiInfo.setBSSID(mLastBssid); 7782 mWifiInfo.setNetworkId(mLastNetworkId); 7783 sendNetworkStateChangeBroadcast(mLastBssid); 7784 transitionTo(mObtainingIpState); 7785 break; 7786 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7787 // Calling handleNetworkDisconnect here is redundant because we might already 7788 // have called it when leaving L2ConnectedState to go to disconnecting state 7789 // or thru other path 7790 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7791 // if they are valid, and only in this case call handleNEtworkDisconnect, 7792 // TODO: this should be fixed for a L MR release 7793 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7794 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7795 // at the chip etc... 7796 if (DBG) log("ConnectModeState: Network connection lost "); 7797 handleNetworkDisconnect(); 7798 transitionTo(mDisconnectedState); 7799 break; 7800 case CMD_PNO_NETWORK_FOUND: 7801 processPnoNetworkFound((ScanResult[]) message.obj); 7802 break; 7803 case CMD_ADD_PASSPOINT_MO: 7804 res = mWifiConfigStore.addPasspointManagementObject((String) message.obj); 7805 replyToMessage(message, message.what, res); 7806 break; 7807 case CMD_MODIFY_PASSPOINT_MO: 7808 if (message.obj != null) { 7809 Bundle bundle = (Bundle) message.obj; 7810 ArrayList<PasspointManagementObjectDefinition> mos = 7811 bundle.getParcelableArrayList("MOS"); 7812 res = mWifiConfigStore.modifyPasspointMo(bundle.getString("FQDN"), mos); 7813 } else { 7814 res = 0; 7815 } 7816 replyToMessage(message, message.what, res); 7817 7818 break; 7819 case CMD_QUERY_OSU_ICON: 7820 if (mWifiConfigStore.queryPasspointIcon( 7821 ((Bundle) message.obj).getLong("BSSID"), 7822 ((Bundle) message.obj).getString("FILENAME"))) { 7823 res = 1; 7824 } else { 7825 res = 0; 7826 } 7827 replyToMessage(message, message.what, res); 7828 break; 7829 case CMD_MATCH_PROVIDER_NETWORK: 7830 res = mWifiConfigStore.matchProviderWithCurrentNetwork((String) message.obj); 7831 replyToMessage(message, message.what, res); 7832 break; 7833 default: 7834 return NOT_HANDLED; 7835 } 7836 return HANDLED; 7837 } 7838 } 7839 7840 private void updateCapabilities(WifiConfiguration config) { 7841 NetworkCapabilities networkCapabilities = new NetworkCapabilities(mDfltNetworkCapabilities); 7842 if (config != null) { 7843 if (config.ephemeral) { 7844 networkCapabilities.removeCapability( 7845 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7846 } else { 7847 networkCapabilities.addCapability( 7848 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7849 } 7850 networkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7851 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7852 } 7853 mNetworkAgent.sendNetworkCapabilities(networkCapabilities); 7854 } 7855 7856 private class WifiNetworkAgent extends NetworkAgent { 7857 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7858 NetworkCapabilities nc, LinkProperties lp, int score) { 7859 super(l, c, TAG, ni, nc, lp, score); 7860 } 7861 protected void unwanted() { 7862 // Ignore if we're not the current networkAgent. 7863 if (this != mNetworkAgent) return; 7864 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7865 + Integer.toString(mWifiInfo.score)); 7866 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7867 } 7868 7869 @Override 7870 protected void networkStatus(int status) { 7871 if (this != mNetworkAgent) return; 7872 if (status == NetworkAgent.INVALID_NETWORK) { 7873 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7874 + Integer.toString(mWifiInfo.score)); 7875 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7876 } else if (status == NetworkAgent.VALID_NETWORK) { 7877 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7878 + Integer.toString(mWifiInfo.score)); 7879 doNetworkStatus(status); 7880 } 7881 } 7882 7883 @Override 7884 protected void saveAcceptUnvalidated(boolean accept) { 7885 if (this != mNetworkAgent) return; 7886 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7887 } 7888 7889 @Override 7890 protected void startPacketKeepalive(Message msg) { 7891 WifiStateMachine.this.sendMessage( 7892 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7893 } 7894 7895 @Override 7896 protected void stopPacketKeepalive(Message msg) { 7897 WifiStateMachine.this.sendMessage( 7898 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7899 } 7900 7901 @Override 7902 protected void setSignalStrengthThresholds(int[] thresholds) { 7903 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 7904 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 7905 // MAX_VALUE at the start/end of the thresholds array if necessary. 7906 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 7907 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 7908 // re-arm the hardware event. This needs to be done on the state machine thread to 7909 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 7910 // sent in the NetworkCapabilities) must be the one received from the hardware event 7911 // received, or we might skip callbacks. 7912 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 7913 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 7914 if (thresholds.length == 0) { 7915 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7916 mWifiInfo.getRssi()); 7917 return; 7918 } 7919 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 7920 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 7921 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 7922 Arrays.sort(rssiVals); 7923 byte[] rssiRange = new byte[rssiVals.length]; 7924 for (int i = 0; i < rssiVals.length; i++) { 7925 int val = rssiVals[i]; 7926 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 7927 rssiRange[i] = (byte) val; 7928 } else { 7929 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 7930 + Arrays.toString(rssiVals)); 7931 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7932 mWifiInfo.getRssi()); 7933 return; 7934 } 7935 } 7936 // TODO: Do we quash rssi values in this sorted array which are very close? 7937 mRssiRanges = rssiRange; 7938 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 7939 mWifiInfo.getRssi()); 7940 } 7941 7942 @Override 7943 protected void preventAutomaticReconnect() { 7944 if (this != mNetworkAgent) return; 7945 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 7946 } 7947 } 7948 7949 void unwantedNetwork(int reason) { 7950 sendMessage(CMD_UNWANTED_NETWORK, reason); 7951 } 7952 7953 void doNetworkStatus(int status) { 7954 sendMessage(CMD_NETWORK_STATUS, status); 7955 } 7956 7957 // rfc4186 & rfc4187: 7958 // create Permanent Identity base on IMSI, 7959 // identity = usernam@realm 7960 // with username = prefix | IMSI 7961 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7962 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7963 String mcc; 7964 String mnc; 7965 String prefix; 7966 7967 if (imsi == null || imsi.isEmpty()) 7968 return ""; 7969 7970 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7971 prefix = "1"; 7972 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7973 prefix = "0"; 7974 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7975 prefix = "6"; 7976 else // not a valide EapMethod 7977 return ""; 7978 7979 /* extract mcc & mnc from mccMnc */ 7980 if (mccMnc != null && !mccMnc.isEmpty()) { 7981 mcc = mccMnc.substring(0, 3); 7982 mnc = mccMnc.substring(3); 7983 if (mnc.length() == 2) 7984 mnc = "0" + mnc; 7985 } else { 7986 // extract mcc & mnc from IMSI, assume mnc size is 3 7987 mcc = imsi.substring(0, 3); 7988 mnc = imsi.substring(3, 6); 7989 } 7990 7991 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7992 } 7993 7994 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7995 if (config == null) 7996 return false; 7997 7998 // We are still seeing a fairly high power consumption triggered by autojoin scans 7999 // Hence do partial scans only for PSK configuration that are roamable since the 8000 // primary purpose of the partial scans is roaming. 8001 // Full badn scans with exponential backoff for the purpose or extended roaming and 8002 // network switching are performed unconditionally. 8003 ScanDetailCache scanDetailCache = 8004 mWifiConfigStore.getScanDetailCache(config); 8005 if (scanDetailCache == null 8006 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 8007 || scanDetailCache.size() > 6) { 8008 //return true but to not trigger the scan 8009 return true; 8010 } 8011 HashSet<Integer> freqs = mWifiConfigStore.makeChannelList(config, 8012 ONE_HOUR_MILLI, restrictChannelList); 8013 if (freqs != null && freqs.size() != 0) { 8014 //if (DBG) { 8015 logd("starting scan for " + config.configKey() + " with " + freqs); 8016 //} 8017 // Call wifi native to start the scan 8018 if (startScanNative(freqs)) { 8019 // Only count battery consumption if scan request is accepted 8020 noteScanStart(SCAN_ALARM_SOURCE, null); 8021 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8022 } else { 8023 // used for debug only, mark scan as failed 8024 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8025 } 8026 return true; 8027 } else { 8028 if (DBG) logd("no channels for " + config.configKey()); 8029 return false; 8030 } 8031 } 8032 8033 void clearCurrentConfigBSSID(String dbg) { 8034 // Clear the bssid in the current config's network block 8035 WifiConfiguration config = getCurrentWifiConfiguration(); 8036 if (config == null) 8037 return; 8038 clearConfigBSSID(config, dbg); 8039 } 8040 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8041 if (config == null) 8042 return; 8043 if (DBG) { 8044 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8045 + " config.NetworkSelectionStatus.mNetworkSelectionBSSID " 8046 + config.getNetworkSelectionStatus().getNetworkSelectionBSSID()); 8047 } 8048 config.getNetworkSelectionStatus().setNetworkSelectionBSSID("any"); 8049 if (DBG) { 8050 logd(dbg + " " + config.SSID 8051 + " nid=" + Integer.toString(config.networkId)); 8052 } 8053 mWifiConfigStore.saveWifiConfigBSSID(config); 8054 } 8055 8056 class L2ConnectedState extends State { 8057 @Override 8058 public void enter() { 8059 mRssiPollToken++; 8060 if (mEnableRssiPolling) { 8061 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8062 } 8063 if (mNetworkAgent != null) { 8064 loge("Have NetworkAgent when entering L2Connected"); 8065 setNetworkDetailedState(DetailedState.DISCONNECTED); 8066 } 8067 setNetworkDetailedState(DetailedState.CONNECTING); 8068 8069 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8070 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8071 } 8072 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8073 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8074 mLinkProperties, 60); 8075 8076 // We must clear the config BSSID, as the wifi chipset may decide to roam 8077 // from this point on and having the BSSID specified in the network block would 8078 // cause the roam to faile and the device to disconnect 8079 clearCurrentConfigBSSID("L2ConnectedState"); 8080 } 8081 8082 @Override 8083 public void exit() { 8084 mIpManager.stop(); 8085 8086 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8087 // Bug: 15347363 8088 // For paranoia's sake, call handleNetworkDisconnect 8089 // only if BSSID is null or last networkId 8090 // is not invalid. 8091 if (DBG) { 8092 StringBuilder sb = new StringBuilder(); 8093 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8094 if (mLastBssid !=null) { 8095 sb.append(" ").append(mLastBssid); 8096 } 8097 } 8098 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8099 handleNetworkDisconnect(); 8100 } 8101 } 8102 8103 @Override 8104 public boolean processMessage(Message message) { 8105 logStateAndMessage(message, this); 8106 8107 switch (message.what) { 8108 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8109 handlePreDhcpSetup(); 8110 break; 8111 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 8112 mIpManager.completedPreDhcpAction(); 8113 break; 8114 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8115 handlePostDhcpSetup(); 8116 // We advance to mConnectedState because IpManager will also send a 8117 // CMD_IPV4_PROVISIONING_SUCCESS message, which calls handleIPv4Success(), 8118 // which calls updateLinkProperties, which then sends 8119 // CMD_IP_CONFIGURATION_SUCCESSFUL. 8120 // 8121 // In the event of failure, we transition to mDisconnectingState 8122 // similarly--via messages sent back from IpManager. 8123 break; 8124 case CMD_IPV4_PROVISIONING_SUCCESS: { 8125 handleIPv4Success((DhcpResults) message.obj); 8126 break; 8127 } 8128 case CMD_IPV4_PROVISIONING_FAILURE: { 8129 handleIPv4Failure(); 8130 break; 8131 } 8132 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8133 handleSuccessfulIpConfiguration(); 8134 mWifiMetrics.endConnectionEvent( 8135 WifiMetrics.ConnectionEvent.LLF_NONE, 8136 WifiMetricsProto.ConnectionEvent.HLF_NONE); 8137 sendConnectedState(); 8138 transitionTo(mConnectedState); 8139 break; 8140 case CMD_IP_CONFIGURATION_LOST: 8141 // Get Link layer stats so that we get fresh tx packet counters. 8142 getWifiLinkLayerStats(true); 8143 handleIpConfigurationLost(); 8144 transitionTo(mDisconnectingState); 8145 break; 8146 case CMD_IP_REACHABILITY_LOST: 8147 if (DBG && message.obj != null) log((String) message.obj); 8148 handleIpReachabilityLost(); 8149 transitionTo(mDisconnectingState); 8150 break; 8151 case CMD_DISCONNECT: 8152 mWifiNative.disconnect(); 8153 transitionTo(mDisconnectingState); 8154 break; 8155 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8156 if (message.arg1 == 1) { 8157 mWifiNative.disconnect(); 8158 mTemporarilyDisconnectWifi = true; 8159 transitionTo(mDisconnectingState); 8160 } 8161 break; 8162 case CMD_SET_OPERATIONAL_MODE: 8163 if (message.arg1 != CONNECT_MODE) { 8164 sendMessage(CMD_DISCONNECT); 8165 deferMessage(message); 8166 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8167 noteWifiDisabledWhileAssociated(); 8168 } 8169 } 8170 mWifiConfigStore. 8171 setAndEnableLastSelectedConfiguration( 8172 WifiConfiguration.INVALID_NETWORK_ID); 8173 break; 8174 case CMD_SET_COUNTRY_CODE: 8175 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8176 deferMessage(message); 8177 break; 8178 case CMD_START_SCAN: 8179 if (DBG) { 8180 logd("CMD_START_SCAN source " + message.arg1 8181 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8182 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8183 + " targetRoamBSSID=" + mTargetRoamBSSID 8184 + " RSSI=" + mWifiInfo.getRssi()); 8185 } 8186 if (message.arg1 == SCAN_ALARM_SOURCE) { 8187 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8188 // not be processed) and restart the scan if neede 8189 if (!getEnableAutoJoinWhenAssociated()) { 8190 return HANDLED; 8191 } 8192 boolean shouldScan = mScreenOn; 8193 8194 if (!checkAndRestartDelayedScan(message.arg2, 8195 shouldScan, 8196 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8197 null, null)) { 8198 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8199 logd("L2Connected CMD_START_SCAN source " 8200 + message.arg1 8201 + " " + message.arg2 + ", " + mDelayedScanCounter 8202 + " -> obsolete"); 8203 return HANDLED; 8204 } 8205 if (mP2pConnected.get()) { 8206 logd("L2Connected CMD_START_SCAN source " 8207 + message.arg1 8208 + " " + message.arg2 + ", " + mDelayedScanCounter 8209 + " ignore because P2P is connected"); 8210 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8211 return HANDLED; 8212 } 8213 boolean tryFullBandScan = false; 8214 boolean restrictChannelList = false; 8215 long now_ms = System.currentTimeMillis(); 8216 if (DBG) { 8217 logd("CMD_START_SCAN with age=" 8218 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8219 + " interval=" + fullBandConnectedTimeIntervalMilli 8220 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8221 } 8222 if (mWifiInfo != null) { 8223 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8224 (now_ms - lastFullBandConnectedTimeMilli) 8225 > fullBandConnectedTimeIntervalMilli) { 8226 if (DBG) { 8227 logd("CMD_START_SCAN try full band scan age=" 8228 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8229 + " interval=" + fullBandConnectedTimeIntervalMilli 8230 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8231 } 8232 tryFullBandScan = true; 8233 } 8234 8235 if (mWifiInfo.txSuccessRate > 8236 mWifiConfigStore.maxTxPacketForFullScans 8237 || mWifiInfo.rxSuccessRate > 8238 mWifiConfigStore.maxRxPacketForFullScans) { 8239 // Too much traffic at the interface, hence no full band scan 8240 if (DBG) { 8241 logd("CMD_START_SCAN " + 8242 "prevent full band scan due to pkt rate"); 8243 } 8244 tryFullBandScan = false; 8245 } 8246 8247 if (mWifiInfo.txSuccessRate > 8248 mWifiConfigStore.maxTxPacketForPartialScans 8249 || mWifiInfo.rxSuccessRate > 8250 mWifiConfigStore.maxRxPacketForPartialScans) { 8251 // Don't scan if lots of packets are being sent 8252 restrictChannelList = true; 8253 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8254 if (DBG) { 8255 logd("CMD_START_SCAN source " + message.arg1 8256 + " ...and ignore scans" 8257 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8258 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8259 } 8260 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8261 return HANDLED; 8262 } 8263 } 8264 } 8265 8266 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8267 if (DBG) { 8268 logd("CMD_START_SCAN full=" + 8269 tryFullBandScan); 8270 } 8271 if (currentConfiguration != null) { 8272 if (fullBandConnectedTimeIntervalMilli 8273 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8274 // Sanity 8275 fullBandConnectedTimeIntervalMilli 8276 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8277 } 8278 if (tryFullBandScan) { 8279 lastFullBandConnectedTimeMilli = now_ms; 8280 if (fullBandConnectedTimeIntervalMilli 8281 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8282 // Increase the interval 8283 fullBandConnectedTimeIntervalMilli 8284 = fullBandConnectedTimeIntervalMilli 8285 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8286 8287 if (DBG) { 8288 logd("CMD_START_SCAN bump interval =" 8289 + fullBandConnectedTimeIntervalMilli); 8290 } 8291 } 8292 handleScanRequest(message); 8293 } else { 8294 if (!startScanForConfiguration( 8295 currentConfiguration, restrictChannelList)) { 8296 if (DBG) { 8297 logd("starting scan, " + 8298 " did not find channels -> full"); 8299 } 8300 lastFullBandConnectedTimeMilli = now_ms; 8301 if (fullBandConnectedTimeIntervalMilli 8302 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8303 // Increase the interval 8304 fullBandConnectedTimeIntervalMilli 8305 = fullBandConnectedTimeIntervalMilli 8306 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8307 8308 if (DBG) { 8309 logd("CMD_START_SCAN bump interval =" 8310 + fullBandConnectedTimeIntervalMilli); 8311 } 8312 } 8313 handleScanRequest(message); 8314 } 8315 } 8316 8317 } else { 8318 logd("CMD_START_SCAN : connected mode and no configuration"); 8319 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8320 } 8321 } else { 8322 // Not scan alarm source 8323 return NOT_HANDLED; 8324 } 8325 break; 8326 /* Ignore connection to same network */ 8327 case WifiManager.CONNECT_NETWORK: 8328 int netId = message.arg1; 8329 if (mWifiInfo.getNetworkId() == netId) { 8330 break; 8331 } 8332 return NOT_HANDLED; 8333 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8334 mWifiInfo.setBSSID((String) message.obj); 8335 mLastNetworkId = message.arg1; 8336 mWifiInfo.setNetworkId(mLastNetworkId); 8337 if(!mLastBssid.equals((String) message.obj)) { 8338 mLastBssid = (String) message.obj; 8339 sendNetworkStateChangeBroadcast(mLastBssid); 8340 } 8341 break; 8342 case CMD_RSSI_POLL: 8343 if (message.arg1 == mRssiPollToken) { 8344 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8345 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8346 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8347 if (stats != null) { 8348 // Sanity check the results provided by driver 8349 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8350 && (stats.rssi_mgmt == 0 8351 || stats.beacon_rx == 0)) { 8352 stats = null; 8353 } 8354 } 8355 // Get Info and continue polling 8356 fetchRssiLinkSpeedAndFrequencyNative(); 8357 calculateWifiScore(stats); 8358 } 8359 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8360 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8361 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8362 } else { 8363 // Polling has completed 8364 } 8365 break; 8366 case CMD_ENABLE_RSSI_POLL: 8367 cleanWifiScore(); 8368 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8369 mEnableRssiPolling = (message.arg1 == 1); 8370 } else { 8371 mEnableRssiPolling = false; 8372 } 8373 mRssiPollToken++; 8374 if (mEnableRssiPolling) { 8375 // First poll 8376 fetchRssiLinkSpeedAndFrequencyNative(); 8377 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8378 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8379 } 8380 break; 8381 case WifiManager.RSSI_PKTCNT_FETCH: 8382 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8383 fetchRssiLinkSpeedAndFrequencyNative(); 8384 info.rssi = mWifiInfo.getRssi(); 8385 fetchPktcntNative(info); 8386 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8387 break; 8388 case CMD_DELAYED_NETWORK_DISCONNECT: 8389 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8390 8391 // Ignore if we are not debouncing 8392 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8393 + message.arg1); 8394 return HANDLED; 8395 } else { 8396 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8397 + message.arg1); 8398 8399 linkDebouncing = false; 8400 // If we are still debouncing while this message comes, 8401 // it means we were not able to reconnect within the alloted time 8402 // = LINK_FLAPPING_DEBOUNCE_MSEC 8403 // and thus, trigger a real disconnect 8404 handleNetworkDisconnect(); 8405 transitionTo(mDisconnectedState); 8406 } 8407 break; 8408 case CMD_ASSOCIATED_BSSID: 8409 if ((String) message.obj == null) { 8410 logw("Associated command w/o BSSID"); 8411 break; 8412 } 8413 mLastBssid = (String) message.obj; 8414 if (mLastBssid != null 8415 && (mWifiInfo.getBSSID() == null 8416 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8417 mWifiInfo.setBSSID((String) message.obj); 8418 sendNetworkStateChangeBroadcast(mLastBssid); 8419 } 8420 break; 8421 case CMD_START_RSSI_MONITORING_OFFLOAD: 8422 case CMD_RSSI_THRESHOLD_BREACH: 8423 byte currRssi = (byte) message.arg1; 8424 processRssiThreshold(currRssi, message.what); 8425 break; 8426 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8427 stopRssiMonitoringOffload(); 8428 break; 8429 case CMD_RESET_SIM_NETWORKS: 8430 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8431 WifiConfiguration config = 8432 mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 8433 if (mWifiConfigStore.isSimConfig(config)) { 8434 mWifiNative.disconnect(); 8435 transitionTo(mDisconnectingState); 8436 } 8437 } 8438 /* allow parent state to reset data for other networks */ 8439 return NOT_HANDLED; 8440 default: 8441 return NOT_HANDLED; 8442 } 8443 8444 return HANDLED; 8445 } 8446 } 8447 8448 class ObtainingIpState extends State { 8449 @Override 8450 public void enter() { 8451 if (DBG) { 8452 String key = ""; 8453 if (getCurrentWifiConfiguration() != null) { 8454 key = getCurrentWifiConfiguration().configKey(); 8455 } 8456 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8457 + " " + key + " " 8458 + " roam=" + mAutoRoaming 8459 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8460 + " watchdog= " + obtainingIpWatchdogCount); 8461 } 8462 8463 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8464 // We might still be roaming 8465 linkDebouncing = false; 8466 8467 // Send event to CM & network change broadcast 8468 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8469 8470 // We must clear the config BSSID, as the wifi chipset may decide to roam 8471 // from this point on and having the BSSID specified in the network block would 8472 // cause the roam to fail and the device to disconnect. 8473 clearCurrentConfigBSSID("ObtainingIpAddress"); 8474 8475 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8476 // We used to do DHCPv4 RENEWs on framework roams. 8477 // TODO: Investigate whether we should reinstitute this. 8478 // 8479 // When we get here after a roam, we will already have called 8480 // mIpManager.confirmConfiguration() to ensure we're on the 8481 // same network (in handling of SupplicantState.COMPLETED). 8482 if (!isRoaming()) { 8483 mIpManager.stop(); 8484 mIpManager.startProvisioning(); 8485 } 8486 obtainingIpWatchdogCount++; 8487 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8488 // Get Link layer stats so as we get fresh tx packet counters 8489 getWifiLinkLayerStats(true); 8490 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8491 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8492 } else { 8493 // Stop IpManager in case we're switching from static 8494 // configuration to DHCP. 8495 // 8496 // TODO: Only ever enter this state the first time we 8497 // connect to a network, never on changing from static 8498 // configuration to DHCP. When we transition from static 8499 // configuration to DHCP, we must tell ConnectivityService 8500 // that we're disconnected, because DHCP might take a long 8501 // time, during which connectivity APIs such as 8502 // getActiveNetworkInfo should not return CONNECTED. 8503 stopIpManager(); 8504 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8505 mLastNetworkId); 8506 if (config.ipAddress == null) { 8507 logd("Static IP lacks address"); 8508 sendMessage(CMD_IPV4_PROVISIONING_FAILURE); 8509 } else { 8510 mIpManager.startProvisioning(config); 8511 } 8512 } 8513 } 8514 8515 @Override 8516 public boolean processMessage(Message message) { 8517 logStateAndMessage(message, this); 8518 8519 switch(message.what) { 8520 case CMD_AUTO_CONNECT: 8521 case CMD_AUTO_ROAM: 8522 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8523 break; 8524 case WifiManager.SAVE_NETWORK: 8525 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8526 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8527 deferMessage(message); 8528 break; 8529 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8530 8531 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8532 mWifiMetrics.endConnectionEvent( 8533 WifiMetrics.ConnectionEvent.LLF_NETWORK_DISCONNECTION, 8534 WifiMetricsProto.ConnectionEvent.HLF_NONE); 8535 return NOT_HANDLED; 8536 case CMD_SET_HIGH_PERF_MODE: 8537 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8538 deferMessage(message); 8539 break; 8540 /* Defer scan request since we should not switch to other channels at DHCP */ 8541 case CMD_START_SCAN: 8542 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8543 deferMessage(message); 8544 break; 8545 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8546 if (message.arg1 == obtainingIpWatchdogCount) { 8547 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8548 + obtainingIpWatchdogCount); 8549 handleIpConfigurationLost(); 8550 transitionTo(mDisconnectingState); 8551 break; 8552 } 8553 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8554 break; 8555 default: 8556 return NOT_HANDLED; 8557 } 8558 return HANDLED; 8559 } 8560 } 8561 8562 private void sendConnectedState() { 8563 // If this network was explicitly selected by the user, evaluate whether to call 8564 // explicitlySelected() so the system can treat it appropriately. 8565 WifiConfiguration config = getCurrentWifiConfiguration(); 8566 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8567 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8568 if (DBG) { 8569 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8570 } 8571 if (prompt) { 8572 // Selected by the user via Settings or QuickSettings. If this network has Internet 8573 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8574 // really want to switch, or has already confirmed and selected "Don't ask again". 8575 if (DBG) { 8576 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8577 } 8578 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8579 } 8580 } 8581 8582 setNetworkDetailedState(DetailedState.CONNECTED); 8583 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8584 sendNetworkStateChangeBroadcast(mLastBssid); 8585 } 8586 8587 class RoamingState extends State { 8588 boolean mAssociated; 8589 @Override 8590 public void enter() { 8591 if (DBG) { 8592 log("RoamingState Enter" 8593 + " mScreenOn=" + mScreenOn ); 8594 } 8595 setScanAlarm(false); 8596 8597 // Make sure we disconnect if roaming fails 8598 roamWatchdogCount++; 8599 logd("Start Roam Watchdog " + roamWatchdogCount); 8600 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8601 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8602 mAssociated = false; 8603 } 8604 @Override 8605 public boolean processMessage(Message message) { 8606 logStateAndMessage(message, this); 8607 WifiConfiguration config; 8608 switch (message.what) { 8609 case CMD_IP_CONFIGURATION_LOST: 8610 config = getCurrentWifiConfiguration(); 8611 if (config != null) { 8612 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8613 mWifiConfigStore.noteRoamingFailure(config, 8614 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8615 } 8616 return NOT_HANDLED; 8617 case CMD_UNWANTED_NETWORK: 8618 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8619 return HANDLED; 8620 case CMD_SET_OPERATIONAL_MODE: 8621 if (message.arg1 != CONNECT_MODE) { 8622 deferMessage(message); 8623 } 8624 break; 8625 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8626 /** 8627 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8628 * before NETWORK_DISCONNECTION_EVENT 8629 * And there is an associated BSSID corresponding to our target BSSID, then 8630 * we have missed the network disconnection, transition to mDisconnectedState 8631 * and handle the rest of the events there. 8632 */ 8633 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8634 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8635 || stateChangeResult.state == SupplicantState.INACTIVE 8636 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8637 if (DBG) { 8638 log("STATE_CHANGE_EVENT in roaming state " 8639 + stateChangeResult.toString() ); 8640 } 8641 if (stateChangeResult.BSSID != null 8642 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8643 handleNetworkDisconnect(); 8644 transitionTo(mDisconnectedState); 8645 } 8646 } 8647 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8648 // We completed the layer2 roaming part 8649 mAssociated = true; 8650 if (stateChangeResult.BSSID != null) { 8651 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8652 } 8653 } 8654 break; 8655 case CMD_ROAM_WATCHDOG_TIMER: 8656 if (roamWatchdogCount == message.arg1) { 8657 if (DBG) log("roaming watchdog! -> disconnect"); 8658 mRoamFailCount++; 8659 handleNetworkDisconnect(); 8660 mWifiNative.disconnect(); 8661 transitionTo(mDisconnectedState); 8662 } 8663 break; 8664 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8665 if (mAssociated) { 8666 if (DBG) log("roaming and Network connection established"); 8667 mLastNetworkId = message.arg1; 8668 mLastBssid = (String) message.obj; 8669 mWifiInfo.setBSSID(mLastBssid); 8670 mWifiInfo.setNetworkId(mLastNetworkId); 8671 mWifiQualifiedNetworkSelector.enableBssidForQualitynetworkSelection( 8672 mLastBssid, true); 8673 sendNetworkStateChangeBroadcast(mLastBssid); 8674 transitionTo(mObtainingIpState); 8675 } else { 8676 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8677 } 8678 break; 8679 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8680 // Throw away but only if it corresponds to the network we're roaming to 8681 String bssid = (String) message.obj; 8682 if (true) { 8683 String target = ""; 8684 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8685 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8686 + " BSSID=" + bssid 8687 + " target=" + target); 8688 } 8689 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8690 handleNetworkDisconnect(); 8691 transitionTo(mDisconnectedState); 8692 } 8693 break; 8694 case WifiMonitor.SSID_TEMP_DISABLED: 8695 // Auth error while roaming 8696 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8697 + " id=" + Integer.toString(message.arg1) 8698 + " isRoaming=" + isRoaming() 8699 + " roam=" + mAutoRoaming); 8700 if (message.arg1 == mLastNetworkId) { 8701 config = getCurrentWifiConfiguration(); 8702 if (config != null) { 8703 mWifiLogger.captureBugReportData( 8704 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8705 mWifiConfigStore.noteRoamingFailure(config, 8706 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8707 } 8708 handleNetworkDisconnect(); 8709 transitionTo(mDisconnectingState); 8710 } 8711 return NOT_HANDLED; 8712 case CMD_START_SCAN: 8713 deferMessage(message); 8714 break; 8715 default: 8716 return NOT_HANDLED; 8717 } 8718 return HANDLED; 8719 } 8720 8721 @Override 8722 public void exit() { 8723 logd("WifiStateMachine: Leaving Roaming state"); 8724 } 8725 } 8726 8727 class ConnectedState extends State { 8728 @Override 8729 public void enter() { 8730 String address; 8731 updateDefaultRouteMacAddress(1000); 8732 if (DBG) { 8733 log("Enter ConnectedState " 8734 + " mScreenOn=" + mScreenOn 8735 + " scanperiod=" 8736 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8737 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8738 + mWifiConfigStore.enableHalBasedPno.get() 8739 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8740 } 8741 if (mScreenOn 8742 && getEnableAutoJoinWhenAssociated()) { 8743 if (useHalBasedAutoJoinOffload()) { 8744 startGScanConnectedModeOffload("connectedEnter"); 8745 } else { 8746 // restart scan alarm 8747 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8748 null, null); 8749 } 8750 } 8751 registerConnected(); 8752 lastConnectAttemptTimestamp = 0; 8753 targetWificonfiguration = null; 8754 // Paranoia 8755 linkDebouncing = false; 8756 8757 // Not roaming anymore 8758 mAutoRoaming = false; 8759 8760 if (testNetworkDisconnect) { 8761 testNetworkDisconnectCounter++; 8762 logd("ConnectedState Enter start disconnect test " + 8763 testNetworkDisconnectCounter); 8764 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8765 testNetworkDisconnectCounter, 0), 15000); 8766 } 8767 8768 // Reenable all networks, allow for hidden networks to be scanned 8769 mWifiConfigStore.enableAllNetworks(); 8770 8771 mLastDriverRoamAttempt = 0; 8772 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 8773 //startLazyRoam(); 8774 } 8775 @Override 8776 public boolean processMessage(Message message) { 8777 WifiConfiguration config = null; 8778 logStateAndMessage(message, this); 8779 8780 switch (message.what) { 8781 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8782 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8783 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8784 return HANDLED; 8785 } 8786 /* If we are still in Disconnected state after having discovered a valid 8787 * network this means autojoin didnt managed to associate to the network, 8788 * then restart PNO so as we will try associating to it again. 8789 */ 8790 if (useHalBasedAutoJoinOffload()) { 8791 if (mGScanStartTimeMilli == 0) { 8792 // If offload is not started, then start it... 8793 startGScanConnectedModeOffload("connectedRestart"); 8794 } else { 8795 // If offload is already started, then check if we need to increase 8796 // the scan period and restart the Gscan 8797 long now = System.currentTimeMillis(); 8798 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8799 && ((now - mGScanStartTimeMilli) 8800 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8801 && (mGScanPeriodMilli 8802 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8803 { 8804 startConnectedGScan("Connected restart gscan"); 8805 } 8806 } 8807 } 8808 break; 8809 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8810 updateAssociatedScanPermission(); 8811 break; 8812 case CMD_UNWANTED_NETWORK: 8813 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8814 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8815 mWifiNative.disconnect(); 8816 transitionTo(mDisconnectingState); 8817 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8818 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8819 Log.d(TAG, (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN 8820 ? "NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN" 8821 : "NETWORK_STATUS_UNWANTED_VALIDATION_FAILED")); 8822 config = getCurrentWifiConfiguration(); 8823 if (config != null) { 8824 // Disable autojoin 8825 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8826 config.validatedInternetAccess = false; 8827 // Clear last-selected status, as being last-selected also avoids 8828 // disabling auto-join. 8829 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8830 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 8831 WifiConfiguration.INVALID_NETWORK_ID); 8832 } 8833 mWifiConfigStore.updateNetworkSelectionStatus(config, 8834 WifiConfiguration.NetworkSelectionStatus 8835 .DISABLED_NO_INTERNET); 8836 } 8837 config.numNoInternetAccessReports += 1; 8838 mWifiConfigStore.writeKnownNetworkHistory(); 8839 } 8840 } 8841 return HANDLED; 8842 case CMD_NETWORK_STATUS: 8843 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8844 config = getCurrentWifiConfiguration(); 8845 if (config != null) { 8846 // re-enable autojoin 8847 config.numNoInternetAccessReports = 0; 8848 config.validatedInternetAccess = true; 8849 mWifiConfigStore.writeKnownNetworkHistory(); 8850 } 8851 } 8852 return HANDLED; 8853 case CMD_ACCEPT_UNVALIDATED: 8854 boolean accept = (message.arg1 != 0); 8855 config = getCurrentWifiConfiguration(); 8856 if (config != null) { 8857 config.noInternetAccessExpected = accept; 8858 } 8859 return HANDLED; 8860 case CMD_TEST_NETWORK_DISCONNECT: 8861 // Force a disconnect 8862 if (message.arg1 == testNetworkDisconnectCounter) { 8863 mWifiNative.disconnect(); 8864 } 8865 break; 8866 case CMD_ASSOCIATED_BSSID: 8867 // ASSOCIATING to a new BSSID while already connected, indicates 8868 // that driver is roaming 8869 mLastDriverRoamAttempt = System.currentTimeMillis(); 8870 String toBSSID = (String)message.obj; 8871 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8872 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8873 } 8874 return NOT_HANDLED; 8875 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8876 long lastRoam = 0; 8877 mWifiMetrics.endConnectionEvent( 8878 WifiMetrics.ConnectionEvent.LLF_NETWORK_DISCONNECTION, 8879 WifiMetricsProto.ConnectionEvent.HLF_NONE); 8880 if (mLastDriverRoamAttempt != 0) { 8881 // Calculate time since last driver roam attempt 8882 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8883 mLastDriverRoamAttempt = 0; 8884 } 8885 if (unexpectedDisconnectedReason(message.arg2)) { 8886 mWifiLogger.captureBugReportData( 8887 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8888 } 8889 config = getCurrentWifiConfiguration(); 8890 if (mScreenOn 8891 && !linkDebouncing 8892 && config != null 8893 && config.getNetworkSelectionStatus().isNetworkEnabled() 8894 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8895 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8896 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8897 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8898 && mWifiInfo.getRssi() > 8899 WifiQualifiedNetworkSelector.QUALIFIED_RSSI_24G_BAND) 8900 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8901 && mWifiInfo.getRssi() > 8902 mWifiConfigStore.thresholdQualifiedRssi5.get()))) { 8903 // Start de-bouncing the L2 disconnection: 8904 // this L2 disconnection might be spurious. 8905 // Hence we allow 7 seconds for the state machine to try 8906 // to reconnect, go thru the 8907 // roaming cycle and enter Obtaining IP address 8908 // before signalling the disconnect to ConnectivityService and L3 8909 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8910 linkDebouncing = true; 8911 8912 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8913 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8914 if (DBG) { 8915 log("NETWORK_DISCONNECTION_EVENT in connected state" 8916 + " BSSID=" + mWifiInfo.getBSSID() 8917 + " RSSI=" + mWifiInfo.getRssi() 8918 + " freq=" + mWifiInfo.getFrequency() 8919 + " reason=" + message.arg2 8920 + " -> debounce"); 8921 } 8922 return HANDLED; 8923 } else { 8924 if (DBG) { 8925 log("NETWORK_DISCONNECTION_EVENT in connected state" 8926 + " BSSID=" + mWifiInfo.getBSSID() 8927 + " RSSI=" + mWifiInfo.getRssi() 8928 + " freq=" + mWifiInfo.getFrequency() 8929 + " was debouncing=" + linkDebouncing 8930 + " reason=" + message.arg2 8931 + " Network Selection Status=" + (config == null ? "Unavailable" 8932 : config.getNetworkSelectionStatus().getNetworkStatusString())); 8933 } 8934 } 8935 break; 8936 case CMD_AUTO_ROAM: 8937 // Clear the driver roam indication since we are attempting a framework roam 8938 mLastDriverRoamAttempt = 0; 8939 8940 /* Connect command coming from auto-join */ 8941 ScanResult candidate = (ScanResult)message.obj; 8942 String bssid = "any"; 8943 if (candidate != null) { 8944 bssid = candidate.BSSID; 8945 } 8946 int netId = mLastNetworkId; 8947 config = getCurrentWifiConfiguration(); 8948 8949 8950 if (config == null) { 8951 loge("AUTO_ROAM and no config, bail out..."); 8952 break; 8953 } 8954 8955 logd("CMD_AUTO_ROAM sup state " 8956 + mSupplicantStateTracker.getSupplicantStateName() 8957 + " my state " + getCurrentState().getName() 8958 + " nid=" + Integer.toString(netId) 8959 + " config " + config.configKey() 8960 + " roam=" + Integer.toString(message.arg2) 8961 + " to " + bssid 8962 + " targetRoamBSSID " + mTargetRoamBSSID); 8963 8964 setTargetBssid(config, bssid); 8965 mTargetNetworkId = netId; 8966 // Make sure the network is enabled, since supplicant will not re-enable it 8967 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8968 8969 if (deferForUserInput(message, netId, false)) { 8970 break; 8971 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8972 WifiConfiguration.USER_BANNED) { 8973 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8974 WifiManager.NOT_AUTHORIZED); 8975 break; 8976 } 8977 8978 boolean ret = false; 8979 if (mLastNetworkId != netId) { 8980 mWifiMetrics.startConnectionEvent(mWifiInfo, config, 8981 WifiMetricsProto.ConnectionEvent.ROAM_UNRELATED); 8982 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8983 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8984 ret = true; 8985 } 8986 } else { 8987 mWifiMetrics.startConnectionEvent(mWifiInfo, config, 8988 WifiMetricsProto.ConnectionEvent.ROAM_ENTERPRISE); 8989 ret = mWifiNative.reassociate(); 8990 } 8991 if (ret) { 8992 lastConnectAttemptTimestamp = System.currentTimeMillis(); 8993 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8994 8995 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8996 mAutoRoaming = true; 8997 transitionTo(mRoamingState); 8998 8999 } else { 9000 loge("Failed to connect config: " + config + " netId: " + netId); 9001 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9002 WifiManager.ERROR); 9003 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9004 mWifiMetrics.endConnectionEvent( 9005 WifiMetrics.ConnectionEvent.LLF_CONNECT_NETWORK_FAILED, 9006 WifiMetricsProto.ConnectionEvent.HLF_NONE); 9007 break; 9008 } 9009 break; 9010 case CMD_START_IP_PACKET_OFFLOAD: { 9011 int slot = message.arg1; 9012 int intervalSeconds = message.arg2; 9013 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9014 byte[] dstMac; 9015 try { 9016 InetAddress gateway = RouteInfo.selectBestRoute( 9017 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9018 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9019 dstMac = macAddressFromString(dstMacStr); 9020 } catch (NullPointerException|IllegalArgumentException e) { 9021 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9022 mNetworkAgent.onPacketKeepaliveEvent(slot, 9023 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9024 break; 9025 } 9026 pkt.dstMac = dstMac; 9027 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9028 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9029 break; 9030 } 9031 default: 9032 return NOT_HANDLED; 9033 } 9034 return HANDLED; 9035 } 9036 9037 @Override 9038 public void exit() { 9039 logd("WifiStateMachine: Leaving Connected state"); 9040 setScanAlarm(false); 9041 mLastDriverRoamAttempt = 0; 9042 9043 stopLazyRoam(); 9044 9045 mWhiteListedSsids = null; 9046 } 9047 } 9048 9049 class DisconnectingState extends State { 9050 9051 @Override 9052 public void enter() { 9053 9054 if (PDBG) { 9055 logd(" Enter DisconnectingState State scan interval " 9056 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9057 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9058 + " screenOn=" + mScreenOn); 9059 } 9060 9061 // Make sure we disconnect: we enter this state prior to connecting to a new 9062 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9063 // event which in this case will be indicating that supplicant started to associate. 9064 // In some cases supplicant doesn't ignore the connect requests (it might not 9065 // find the target SSID in its cache), 9066 // Therefore we end up stuck that state, hence the need for the watchdog. 9067 disconnectingWatchdogCount++; 9068 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9069 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9070 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9071 } 9072 9073 @Override 9074 public boolean processMessage(Message message) { 9075 logStateAndMessage(message, this); 9076 switch (message.what) { 9077 case CMD_SET_OPERATIONAL_MODE: 9078 if (message.arg1 != CONNECT_MODE) { 9079 deferMessage(message); 9080 } 9081 break; 9082 case CMD_START_SCAN: 9083 deferMessage(message); 9084 return HANDLED; 9085 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9086 if (disconnectingWatchdogCount == message.arg1) { 9087 if (DBG) log("disconnecting watchdog! -> disconnect"); 9088 handleNetworkDisconnect(); 9089 transitionTo(mDisconnectedState); 9090 } 9091 break; 9092 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9093 /** 9094 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9095 * we have missed the network disconnection, transition to mDisconnectedState 9096 * and handle the rest of the events there 9097 */ 9098 deferMessage(message); 9099 handleNetworkDisconnect(); 9100 transitionTo(mDisconnectedState); 9101 break; 9102 default: 9103 return NOT_HANDLED; 9104 } 9105 return HANDLED; 9106 } 9107 } 9108 9109 class DisconnectedState extends State { 9110 @Override 9111 public void enter() { 9112 // We dont scan frequently if this is a temporary disconnect 9113 // due to p2p 9114 if (mTemporarilyDisconnectWifi) { 9115 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9116 return; 9117 } 9118 9119 if (PDBG) { 9120 logd(" Enter DisconnectedState scan interval " 9121 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9122 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9123 + " screenOn=" + mScreenOn 9124 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9125 + mWifiConfigStore.enableHalBasedPno.get()); 9126 } 9127 9128 /** clear the roaming state, if we were roaming, we failed */ 9129 mAutoRoaming = false; 9130 9131 if (useHalBasedAutoJoinOffload()) { 9132 startGScanDisconnectedModeOffload("disconnectedEnter"); 9133 } else { 9134 if (mScreenOn) { 9135 /** 9136 * screen lit and => start scan immediately 9137 */ 9138 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9139 } else { 9140 /** 9141 * screen dark and PNO supported => scan alarm disabled 9142 */ 9143 if (mBackgroundScanSupported) { 9144 /* If a regular scan result is pending, do not initiate background 9145 * scan until the scan results are returned. This is needed because 9146 * initiating a background scan will cancel the regular scan and 9147 * scan results will not be returned until background scanning is 9148 * cleared 9149 */ 9150 if (!mIsScanOngoing) { 9151 enableBackgroundScan(true); 9152 } 9153 } else { 9154 setScanAlarm(true); 9155 } 9156 } 9157 } 9158 9159 /** 9160 * If we have no networks saved, the supplicant stops doing the periodic scan. 9161 * The scans are useful to notify the user of the presence of an open network. 9162 * Note that these are not wake up scans. 9163 */ 9164 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9165 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9166 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9167 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9168 } 9169 9170 mDisconnectedTimeStamp = System.currentTimeMillis(); 9171 mDisconnectedPnoAlarmCount = 0; 9172 } 9173 @Override 9174 public boolean processMessage(Message message) { 9175 boolean ret = HANDLED; 9176 9177 logStateAndMessage(message, this); 9178 9179 switch (message.what) { 9180 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9181 if (mP2pConnected.get()) break; 9182 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9183 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9184 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9185 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9186 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9187 } 9188 break; 9189 case WifiManager.FORGET_NETWORK: 9190 case CMD_REMOVE_NETWORK: 9191 case CMD_REMOVE_APP_CONFIGURATIONS: 9192 case CMD_REMOVE_USER_CONFIGURATIONS: 9193 // Set up a delayed message here. After the forget/remove is handled 9194 // the handled delayed message will determine if there is a need to 9195 // scan and continue 9196 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9197 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9198 ret = NOT_HANDLED; 9199 break; 9200 case CMD_SET_OPERATIONAL_MODE: 9201 if (message.arg1 != CONNECT_MODE) { 9202 mOperationalMode = message.arg1; 9203 9204 mWifiConfigStore.disableAllNetworks(); 9205 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9206 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9207 setWifiState(WIFI_STATE_DISABLED); 9208 } 9209 transitionTo(mScanModeState); 9210 } 9211 mWifiConfigStore. 9212 setAndEnableLastSelectedConfiguration( 9213 WifiConfiguration.INVALID_NETWORK_ID); 9214 break; 9215 /* Ignore network disconnect */ 9216 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9217 // Interpret this as an L2 connection failure 9218 break; 9219 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9220 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9221 if (DBG) { 9222 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9223 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9224 + " debouncing=" + linkDebouncing); 9225 } 9226 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9227 /* ConnectModeState does the rest of the handling */ 9228 ret = NOT_HANDLED; 9229 break; 9230 case CMD_START_SCAN: 9231 if (!checkOrDeferScanAllowed(message)) { 9232 // The scan request was rescheduled 9233 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9234 return HANDLED; 9235 } 9236 if (message.arg1 == SCAN_ALARM_SOURCE) { 9237 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9238 // not be processed) and restart the scan 9239 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9240 if (mP2pConnected.get()) { 9241 period = (int) mFacade.getLongSetting(mContext, 9242 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9243 period); 9244 } 9245 if (!checkAndRestartDelayedScan(message.arg2, 9246 true, period, null, null)) { 9247 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9248 logd("Disconnected CMD_START_SCAN source " 9249 + message.arg1 9250 + " " + message.arg2 + ", " + mDelayedScanCounter 9251 + " -> obsolete"); 9252 return HANDLED; 9253 } 9254 /* Disable background scan temporarily during a regular scan */ 9255 enableBackgroundScan(false); 9256 handleScanRequest(message); 9257 ret = HANDLED; 9258 } else { 9259 9260 /* 9261 * The SCAN request is not handled in this state and 9262 * would eventually might/will get handled in the 9263 * parent's state. The PNO, if already enabled had to 9264 * get disabled before the SCAN trigger. Hence, stop 9265 * the PNO if already enabled in this state, though the 9266 * SCAN request is not handled(PNO disable before the 9267 * SCAN trigger in any other state is not the right 9268 * place to issue). 9269 */ 9270 9271 enableBackgroundScan(false); 9272 ret = NOT_HANDLED; 9273 } 9274 break; 9275 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9276 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9277 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9278 return HANDLED; 9279 } 9280 /* If we are still in Disconnected state after having discovered a valid 9281 * network this means autojoin didnt managed to associate to the network, 9282 * then restart PNO so as we will try associating to it again. 9283 */ 9284 if (useHalBasedAutoJoinOffload()) { 9285 if (mGScanStartTimeMilli == 0) { 9286 // If offload is not started, then start it... 9287 startGScanDisconnectedModeOffload("disconnectedRestart"); 9288 } else { 9289 // If offload is already started, then check if we need to increase 9290 // the scan period and restart the Gscan 9291 long now = System.currentTimeMillis(); 9292 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9293 && ((now - mGScanStartTimeMilli) 9294 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9295 && (mGScanPeriodMilli 9296 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9297 { 9298 startDisconnectedGScan("disconnected restart gscan"); 9299 } 9300 } 9301 } else { 9302 // If we are still disconnected for a short while after having found a 9303 // network thru PNO, then something went wrong, and for some reason we 9304 // couldn't join this network. 9305 // It might be due to a SW bug in supplicant or the wifi stack, or an 9306 // interoperability issue, or we try to join a bad bss and failed 9307 // In that case we want to restart pno so as to make sure that we will 9308 // attempt again to join that network. 9309 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9310 enableBackgroundScan(false); 9311 enableBackgroundScan(true); 9312 } 9313 return HANDLED; 9314 } 9315 break; 9316 case WifiMonitor.SCAN_RESULTS_EVENT: 9317 case WifiMonitor.SCAN_FAILED_EVENT: 9318 /* Re-enable background scan when a pending scan result is received */ 9319 if (!mScreenOn && mIsScanOngoing 9320 && mBackgroundScanSupported 9321 && !useHalBasedAutoJoinOffload()) { 9322 enableBackgroundScan(true); 9323 } else if (!mScreenOn 9324 && !mIsScanOngoing 9325 && mBackgroundScanSupported 9326 && !useHalBasedAutoJoinOffload()) { 9327 // We receive scan results from legacy PNO, hence restart the PNO alarm 9328 int delay; 9329 if (mDisconnectedPnoAlarmCount < 1) { 9330 delay = 30 * 1000; 9331 } else if (mDisconnectedPnoAlarmCount < 3) { 9332 delay = 60 * 1000; 9333 } else { 9334 delay = 360 * 1000; 9335 } 9336 mDisconnectedPnoAlarmCount++; 9337 if (VDBG) { 9338 logd("Starting PNO alarm " + delay); 9339 } 9340 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9341 System.currentTimeMillis() + delay, 9342 mPnoIntent); 9343 } 9344 /* Handled in parent state */ 9345 ret = NOT_HANDLED; 9346 break; 9347 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9348 NetworkInfo info = (NetworkInfo) message.obj; 9349 mP2pConnected.set(info.isConnected()); 9350 if (mP2pConnected.get()) { 9351 int defaultInterval = mContext.getResources().getInteger( 9352 R.integer.config_wifi_scan_interval_p2p_connected); 9353 long scanIntervalMs = mFacade.getLongSetting(mContext, 9354 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9355 defaultInterval); 9356 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9357 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9358 if (DBG) log("Turn on scanning after p2p disconnected"); 9359 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9360 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9361 } else { 9362 // If P2P is not connected and there are saved networks, then restart 9363 // scanning at the normal period. This is necessary because scanning might 9364 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9365 // was set to zero. 9366 if (useHalBasedAutoJoinOffload()) { 9367 startGScanDisconnectedModeOffload("p2pRestart"); 9368 } else { 9369 startDelayedScan( 9370 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9371 null, null); 9372 } 9373 } 9374 break; 9375 case CMD_RECONNECT: 9376 case CMD_REASSOCIATE: 9377 if (mTemporarilyDisconnectWifi) { 9378 // Drop a third party reconnect/reassociate if STA is 9379 // temporarily disconnected for p2p 9380 break; 9381 } else { 9382 // ConnectModeState handles it 9383 ret = NOT_HANDLED; 9384 } 9385 break; 9386 case CMD_SCREEN_STATE_CHANGED: 9387 handleScreenStateChanged(message.arg1 != 0); 9388 break; 9389 default: 9390 ret = NOT_HANDLED; 9391 } 9392 return ret; 9393 } 9394 9395 @Override 9396 public void exit() { 9397 mDisconnectedPnoAlarmCount = 0; 9398 /* No need for a background scan upon exit from a disconnected state */ 9399 enableBackgroundScan(false); 9400 setScanAlarm(false); 9401 mAlarmManager.cancel(mPnoIntent); 9402 } 9403 } 9404 9405 class WpsRunningState extends State { 9406 // Tracks the source to provide a reply 9407 private Message mSourceMessage; 9408 @Override 9409 public void enter() { 9410 mSourceMessage = Message.obtain(getCurrentMessage()); 9411 } 9412 @Override 9413 public boolean processMessage(Message message) { 9414 logStateAndMessage(message, this); 9415 9416 switch (message.what) { 9417 case WifiMonitor.WPS_SUCCESS_EVENT: 9418 // Ignore intermediate success, wait for full connection 9419 break; 9420 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9421 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9422 mSourceMessage.recycle(); 9423 mSourceMessage = null; 9424 deferMessage(message); 9425 transitionTo(mDisconnectedState); 9426 break; 9427 case WifiMonitor.WPS_OVERLAP_EVENT: 9428 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9429 WifiManager.WPS_OVERLAP_ERROR); 9430 mSourceMessage.recycle(); 9431 mSourceMessage = null; 9432 transitionTo(mDisconnectedState); 9433 break; 9434 case WifiMonitor.WPS_FAIL_EVENT: 9435 // Arg1 has the reason for the failure 9436 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9437 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9438 mSourceMessage.recycle(); 9439 mSourceMessage = null; 9440 transitionTo(mDisconnectedState); 9441 } else { 9442 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9443 } 9444 break; 9445 case WifiMonitor.WPS_TIMEOUT_EVENT: 9446 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9447 WifiManager.WPS_TIMED_OUT); 9448 mSourceMessage.recycle(); 9449 mSourceMessage = null; 9450 transitionTo(mDisconnectedState); 9451 break; 9452 case WifiManager.START_WPS: 9453 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9454 break; 9455 case WifiManager.CANCEL_WPS: 9456 if (mWifiNative.cancelWps()) { 9457 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9458 } else { 9459 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9460 } 9461 transitionTo(mDisconnectedState); 9462 break; 9463 /** 9464 * Defer all commands that can cause connections to a different network 9465 * or put the state machine out of connect mode 9466 */ 9467 case CMD_STOP_DRIVER: 9468 case CMD_SET_OPERATIONAL_MODE: 9469 case WifiManager.CONNECT_NETWORK: 9470 case CMD_ENABLE_NETWORK: 9471 case CMD_RECONNECT: 9472 case CMD_REASSOCIATE: 9473 case CMD_ENABLE_ALL_NETWORKS: 9474 deferMessage(message); 9475 break; 9476 case CMD_AUTO_CONNECT: 9477 case CMD_AUTO_ROAM: 9478 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9479 return HANDLED; 9480 case CMD_START_SCAN: 9481 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9482 return HANDLED; 9483 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9484 if (DBG) log("Network connection lost"); 9485 handleNetworkDisconnect(); 9486 break; 9487 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9488 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9489 break; 9490 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9491 // Disregard auth failure events during WPS connection. The 9492 // EAP sequence is retried several times, and there might be 9493 // failures (especially for wps pin). We will get a WPS_XXX 9494 // event at the end of the sequence anyway. 9495 if (DBG) log("Ignore auth failure during WPS connection"); 9496 break; 9497 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9498 // Throw away supplicant state changes when WPS is running. 9499 // We will start getting supplicant state changes once we get 9500 // a WPS success or failure 9501 break; 9502 default: 9503 return NOT_HANDLED; 9504 } 9505 return HANDLED; 9506 } 9507 9508 @Override 9509 public void exit() { 9510 mWifiConfigStore.enableAllNetworks(); 9511 mWifiConfigStore.loadConfiguredNetworks(); 9512 } 9513 } 9514 9515 class SoftApStartingState extends State { 9516 @Override 9517 public void enter() { 9518 final Message message = getCurrentMessage(); 9519 if (message.what == CMD_START_AP) { 9520 WifiConfiguration config = (WifiConfiguration) message.obj; 9521 9522 if (config == null) { 9523 /** 9524 * Configuration not provided in the command, fallback to use the current 9525 * configuration. 9526 */ 9527 config = mWifiApConfigStore.getApConfiguration(); 9528 } else { 9529 /* Update AP configuration. */ 9530 mWifiApConfigStore.setApConfiguration(config); 9531 } 9532 startSoftApWithConfig(config); 9533 } else { 9534 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9535 } 9536 } 9537 @Override 9538 public boolean processMessage(Message message) { 9539 logStateAndMessage(message, this); 9540 9541 switch(message.what) { 9542 case CMD_START_SUPPLICANT: 9543 case CMD_STOP_SUPPLICANT: 9544 case CMD_START_AP: 9545 case CMD_STOP_AP: 9546 case CMD_START_DRIVER: 9547 case CMD_STOP_DRIVER: 9548 case CMD_SET_OPERATIONAL_MODE: 9549 case CMD_SET_COUNTRY_CODE: 9550 case CMD_SET_FREQUENCY_BAND: 9551 case CMD_START_PACKET_FILTERING: 9552 case CMD_STOP_PACKET_FILTERING: 9553 case CMD_TETHER_STATE_CHANGE: 9554 deferMessage(message); 9555 break; 9556 case CMD_START_AP_SUCCESS: 9557 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9558 transitionTo(mSoftApStartedState); 9559 break; 9560 case CMD_START_AP_FAILURE: 9561 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9562 transitionTo(mInitialState); 9563 break; 9564 default: 9565 return NOT_HANDLED; 9566 } 9567 return HANDLED; 9568 } 9569 } 9570 9571 class SoftApStartedState extends State { 9572 @Override 9573 public boolean processMessage(Message message) { 9574 logStateAndMessage(message, this); 9575 9576 switch(message.what) { 9577 case CMD_STOP_AP: 9578 if (DBG) log("Stopping Soft AP"); 9579 /* We have not tethered at this point, so we just shutdown soft Ap */ 9580 try { 9581 mNwService.stopAccessPoint(mInterfaceName); 9582 } catch(Exception e) { 9583 loge("Exception in stopAccessPoint()"); 9584 } 9585 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9586 transitionTo(mInitialState); 9587 break; 9588 case CMD_START_AP: 9589 // Ignore a start on a running access point 9590 break; 9591 // Fail client mode operation when soft AP is enabled 9592 case CMD_START_SUPPLICANT: 9593 loge("Cannot start supplicant with a running soft AP"); 9594 setWifiState(WIFI_STATE_UNKNOWN); 9595 break; 9596 case CMD_TETHER_STATE_CHANGE: 9597 TetherStateChange stateChange = (TetherStateChange) message.obj; 9598 if (startTethering(stateChange.available)) { 9599 transitionTo(mTetheringState); 9600 } 9601 break; 9602 default: 9603 return NOT_HANDLED; 9604 } 9605 return HANDLED; 9606 } 9607 } 9608 9609 class TetheringState extends State { 9610 @Override 9611 public void enter() { 9612 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9613 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9614 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9615 } 9616 @Override 9617 public boolean processMessage(Message message) { 9618 logStateAndMessage(message, this); 9619 9620 switch(message.what) { 9621 case CMD_TETHER_STATE_CHANGE: 9622 TetherStateChange stateChange = (TetherStateChange) message.obj; 9623 if (isWifiTethered(stateChange.active)) { 9624 transitionTo(mTetheredState); 9625 } 9626 return HANDLED; 9627 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9628 if (message.arg1 == mTetherToken) { 9629 loge("Failed to get tether update, shutdown soft access point"); 9630 transitionTo(mSoftApStartedState); 9631 // Needs to be first thing handled 9632 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9633 } 9634 break; 9635 case CMD_START_SUPPLICANT: 9636 case CMD_STOP_SUPPLICANT: 9637 case CMD_START_AP: 9638 case CMD_STOP_AP: 9639 case CMD_START_DRIVER: 9640 case CMD_STOP_DRIVER: 9641 case CMD_SET_OPERATIONAL_MODE: 9642 case CMD_SET_COUNTRY_CODE: 9643 case CMD_SET_FREQUENCY_BAND: 9644 case CMD_START_PACKET_FILTERING: 9645 case CMD_STOP_PACKET_FILTERING: 9646 deferMessage(message); 9647 break; 9648 default: 9649 return NOT_HANDLED; 9650 } 9651 return HANDLED; 9652 } 9653 } 9654 9655 class TetheredState extends State { 9656 @Override 9657 public boolean processMessage(Message message) { 9658 logStateAndMessage(message, this); 9659 9660 switch(message.what) { 9661 case CMD_TETHER_STATE_CHANGE: 9662 TetherStateChange stateChange = (TetherStateChange) message.obj; 9663 if (!isWifiTethered(stateChange.active)) { 9664 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9665 setHostApRunning(null, false); 9666 setHostApRunning(null, true); 9667 } 9668 return HANDLED; 9669 case CMD_STOP_AP: 9670 if (DBG) log("Untethering before stopping AP"); 9671 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9672 stopTethering(); 9673 transitionTo(mUntetheringState); 9674 // More work to do after untethering 9675 deferMessage(message); 9676 break; 9677 default: 9678 return NOT_HANDLED; 9679 } 9680 return HANDLED; 9681 } 9682 } 9683 9684 class UntetheringState extends State { 9685 @Override 9686 public void enter() { 9687 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9688 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9689 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9690 9691 } 9692 @Override 9693 public boolean processMessage(Message message) { 9694 logStateAndMessage(message, this); 9695 9696 switch(message.what) { 9697 case CMD_TETHER_STATE_CHANGE: 9698 TetherStateChange stateChange = (TetherStateChange) message.obj; 9699 9700 /* Wait till wifi is untethered */ 9701 if (isWifiTethered(stateChange.active)) break; 9702 9703 transitionTo(mSoftApStartedState); 9704 break; 9705 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9706 if (message.arg1 == mTetherToken) { 9707 loge("Failed to get tether update, force stop access point"); 9708 transitionTo(mSoftApStartedState); 9709 } 9710 break; 9711 case CMD_START_SUPPLICANT: 9712 case CMD_STOP_SUPPLICANT: 9713 case CMD_START_AP: 9714 case CMD_STOP_AP: 9715 case CMD_START_DRIVER: 9716 case CMD_STOP_DRIVER: 9717 case CMD_SET_OPERATIONAL_MODE: 9718 case CMD_SET_COUNTRY_CODE: 9719 case CMD_SET_FREQUENCY_BAND: 9720 case CMD_START_PACKET_FILTERING: 9721 case CMD_STOP_PACKET_FILTERING: 9722 deferMessage(message); 9723 break; 9724 default: 9725 return NOT_HANDLED; 9726 } 9727 return HANDLED; 9728 } 9729 } 9730 9731 /** 9732 * State machine initiated requests can have replyTo set to null indicating 9733 * there are no recepients, we ignore those reply actions. 9734 */ 9735 private void replyToMessage(Message msg, int what) { 9736 if (msg.replyTo == null) return; 9737 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9738 mReplyChannel.replyToMessage(msg, dstMsg); 9739 } 9740 9741 private void replyToMessage(Message msg, int what, int arg1) { 9742 if (msg.replyTo == null) return; 9743 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9744 dstMsg.arg1 = arg1; 9745 mReplyChannel.replyToMessage(msg, dstMsg); 9746 } 9747 9748 private void replyToMessage(Message msg, int what, Object obj) { 9749 if (msg.replyTo == null) return; 9750 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9751 dstMsg.obj = obj; 9752 mReplyChannel.replyToMessage(msg, dstMsg); 9753 } 9754 9755 /** 9756 * arg2 on the source message has a unique id that needs to be retained in replies 9757 * to match the request 9758 * <p>see WifiManager for details 9759 */ 9760 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9761 Message msg = Message.obtain(); 9762 msg.what = what; 9763 msg.arg2 = srcMsg.arg2; 9764 return msg; 9765 } 9766 9767 /** 9768 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9769 * @param msg Must have a WifiConfiguration obj to succeed 9770 */ 9771 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9772 WifiConfiguration config) { 9773 if (config != null && config.preSharedKey != null) { 9774 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9775 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9776 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9777 wifiCredentialEventType); 9778 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9779 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9780 } 9781 } 9782 9783 private static int parseHex(char ch) { 9784 if ('0' <= ch && ch <= '9') { 9785 return ch - '0'; 9786 } else if ('a' <= ch && ch <= 'f') { 9787 return ch - 'a' + 10; 9788 } else if ('A' <= ch && ch <= 'F') { 9789 return ch - 'A' + 10; 9790 } else { 9791 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9792 } 9793 } 9794 9795 private byte[] parseHex(String hex) { 9796 /* This only works for good input; don't throw bad data at it */ 9797 if (hex == null) { 9798 return new byte[0]; 9799 } 9800 9801 if (hex.length() % 2 != 0) { 9802 throw new NumberFormatException(hex + " is not a valid hex string"); 9803 } 9804 9805 byte[] result = new byte[(hex.length())/2 + 1]; 9806 result[0] = (byte) ((hex.length())/2); 9807 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9808 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9809 byte b = (byte) (val & 0xFF); 9810 result[j] = b; 9811 } 9812 9813 return result; 9814 } 9815 9816 private static String makeHex(byte[] bytes) { 9817 StringBuilder sb = new StringBuilder(); 9818 for (byte b : bytes) { 9819 sb.append(String.format("%02x", b)); 9820 } 9821 return sb.toString(); 9822 } 9823 9824 private static String makeHex(byte[] bytes, int from, int len) { 9825 StringBuilder sb = new StringBuilder(); 9826 for (int i = 0; i < len; i++) { 9827 sb.append(String.format("%02x", bytes[from+i])); 9828 } 9829 return sb.toString(); 9830 } 9831 9832 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9833 9834 int len = array1.length + array2.length + array3.length; 9835 9836 if (array1.length != 0) { 9837 len++; /* add another byte for size */ 9838 } 9839 9840 if (array2.length != 0) { 9841 len++; /* add another byte for size */ 9842 } 9843 9844 if (array3.length != 0) { 9845 len++; /* add another byte for size */ 9846 } 9847 9848 byte[] result = new byte[len]; 9849 9850 int index = 0; 9851 if (array1.length != 0) { 9852 result[index] = (byte) (array1.length & 0xFF); 9853 index++; 9854 for (byte b : array1) { 9855 result[index] = b; 9856 index++; 9857 } 9858 } 9859 9860 if (array2.length != 0) { 9861 result[index] = (byte) (array2.length & 0xFF); 9862 index++; 9863 for (byte b : array2) { 9864 result[index] = b; 9865 index++; 9866 } 9867 } 9868 9869 if (array3.length != 0) { 9870 result[index] = (byte) (array3.length & 0xFF); 9871 index++; 9872 for (byte b : array3) { 9873 result[index] = b; 9874 index++; 9875 } 9876 } 9877 return result; 9878 } 9879 9880 private static byte[] concatHex(byte[] array1, byte[] array2) { 9881 9882 int len = array1.length + array2.length; 9883 9884 byte[] result = new byte[len]; 9885 9886 int index = 0; 9887 if (array1.length != 0) { 9888 for (byte b : array1) { 9889 result[index] = b; 9890 index++; 9891 } 9892 } 9893 9894 if (array2.length != 0) { 9895 for (byte b : array2) { 9896 result[index] = b; 9897 index++; 9898 } 9899 } 9900 9901 return result; 9902 } 9903 9904 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9905 if (targetWificonfiguration == null 9906 || targetWificonfiguration.networkId == requestData.networkId) { 9907 logd("id matches targetWifiConfiguration"); 9908 } else { 9909 logd("id does not match targetWifiConfiguration"); 9910 return; 9911 } 9912 9913 TelephonyManager tm = (TelephonyManager) 9914 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9915 9916 if (tm != null) { 9917 StringBuilder sb = new StringBuilder(); 9918 for (String challenge : requestData.data) { 9919 9920 if (challenge == null || challenge.isEmpty()) 9921 continue; 9922 logd("RAND = " + challenge); 9923 9924 byte[] rand = null; 9925 try { 9926 rand = parseHex(challenge); 9927 } catch (NumberFormatException e) { 9928 loge("malformed challenge"); 9929 continue; 9930 } 9931 9932 String base64Challenge = android.util.Base64.encodeToString( 9933 rand, android.util.Base64.NO_WRAP); 9934 /* 9935 * First, try with appType = 2 => USIM according to 9936 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9937 */ 9938 int appType = 2; 9939 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9940 if (tmResponse == null) { 9941 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9942 * appType = 1 => SIM 9943 */ 9944 appType = 1; 9945 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9946 } 9947 logv("Raw Response - " + tmResponse); 9948 9949 if (tmResponse != null && tmResponse.length() > 4) { 9950 byte[] result = android.util.Base64.decode(tmResponse, 9951 android.util.Base64.DEFAULT); 9952 logv("Hex Response -" + makeHex(result)); 9953 int sres_len = result[0]; 9954 String sres = makeHex(result, 1, sres_len); 9955 int kc_offset = 1+sres_len; 9956 int kc_len = result[kc_offset]; 9957 String kc = makeHex(result, 1 + kc_offset, kc_len); 9958 sb.append(":" + kc + ":" + sres); 9959 logv("kc:" + kc + " sres:" + sres); 9960 9961 String response = sb.toString(); 9962 logv("Supplicant Response -" + response); 9963 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9964 } else { 9965 loge("bad response - " + tmResponse); 9966 mWifiNative.simAuthFailedResponse(requestData.networkId); 9967 } 9968 } 9969 9970 } else { 9971 loge("could not get telephony manager"); 9972 mWifiNative.simAuthFailedResponse(requestData.networkId); 9973 } 9974 } 9975 9976 void handle3GAuthRequest(SimAuthRequestData requestData) { 9977 StringBuilder sb = new StringBuilder(); 9978 byte[] rand = null; 9979 byte[] authn = null; 9980 String res_type = "UMTS-AUTH"; 9981 9982 if (targetWificonfiguration == null 9983 || targetWificonfiguration.networkId == requestData.networkId) { 9984 logd("id matches targetWifiConfiguration"); 9985 } else { 9986 logd("id does not match targetWifiConfiguration"); 9987 return; 9988 } 9989 if (requestData.data.length == 2) { 9990 try { 9991 rand = parseHex(requestData.data[0]); 9992 authn = parseHex(requestData.data[1]); 9993 } catch (NumberFormatException e) { 9994 loge("malformed challenge"); 9995 } 9996 } else { 9997 loge("malformed challenge"); 9998 } 9999 10000 String tmResponse = ""; 10001 if (rand != null && authn != null) { 10002 String base64Challenge = android.util.Base64.encodeToString( 10003 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10004 10005 TelephonyManager tm = (TelephonyManager) 10006 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10007 if (tm != null) { 10008 int appType = 2; // 2 => USIM 10009 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10010 logv("Raw Response - " + tmResponse); 10011 } else { 10012 loge("could not get telephony manager"); 10013 } 10014 } 10015 10016 boolean good_response = false; 10017 if (tmResponse != null && tmResponse.length() > 4) { 10018 byte[] result = android.util.Base64.decode(tmResponse, 10019 android.util.Base64.DEFAULT); 10020 loge("Hex Response - " + makeHex(result)); 10021 byte tag = result[0]; 10022 if (tag == (byte) 0xdb) { 10023 logv("successful 3G authentication "); 10024 int res_len = result[1]; 10025 String res = makeHex(result, 2, res_len); 10026 int ck_len = result[res_len + 2]; 10027 String ck = makeHex(result, res_len + 3, ck_len); 10028 int ik_len = result[res_len + ck_len + 3]; 10029 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10030 sb.append(":" + ik + ":" + ck + ":" + res); 10031 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10032 good_response = true; 10033 } else if (tag == (byte) 0xdc) { 10034 loge("synchronisation failure"); 10035 int auts_len = result[1]; 10036 String auts = makeHex(result, 2, auts_len); 10037 res_type = "UMTS-AUTS"; 10038 sb.append(":" + auts); 10039 logv("auts:" + auts); 10040 good_response = true; 10041 } else { 10042 loge("bad response - unknown tag = " + tag); 10043 } 10044 } else { 10045 loge("bad response - " + tmResponse); 10046 } 10047 10048 if (good_response) { 10049 String response = sb.toString(); 10050 logv("Supplicant Response -" + response); 10051 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10052 } else { 10053 mWifiNative.umtsAuthFailedResponse(requestData.networkId); 10054 } 10055 } 10056 10057 public int getCurrentUserId() { 10058 return mCurrentUserId; 10059 } 10060 10061 private boolean isCurrentUserProfile(int userId) { 10062 if (userId == mCurrentUserId) { 10063 return true; 10064 } 10065 final UserInfo parent = mUserManager.getProfileParent(userId); 10066 return parent != null && parent.id == mCurrentUserId; 10067 } 10068 10069 public List<UserInfo> getCurrentUserProfiles() { 10070 return mUserManager.getProfiles(mCurrentUserId); 10071 } 10072 10073 /** 10074 * @param reason reason code from supplicant on network disconnected event 10075 * @return true if this is a suspicious disconnect 10076 */ 10077 static boolean unexpectedDisconnectedReason(int reason) { 10078 return reason == 2 // PREV_AUTH_NOT_VALID 10079 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10080 || reason == 7 // FRAME_FROM_NONASSOC_STA 10081 || reason == 8 // STA_HAS_LEFT 10082 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10083 || reason == 14 // MICHAEL_MIC_FAILURE 10084 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10085 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10086 || reason == 18 // GROUP_CIPHER_NOT_VALID 10087 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10088 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10089 || reason == 34; // DISASSOC_LOW_ACK 10090 } 10091 10092 /** 10093 * Update WifiMetrics before dumping 10094 */ 10095 void updateWifiMetrics() { 10096 int numSavedNetworks = mWifiConfigStore.getConfiguredNetworksSize(); 10097 int numOpenNetworks = 0; 10098 int numPersonalNetworks = 0; 10099 int numEnterpriseNetworks = 0; 10100 int numNetworksAddedByUser = 0; 10101 int numNetworksAddedByApps = 0; 10102 for (WifiConfiguration config : mWifiConfigStore.getConfiguredNetworks()) { 10103 if (config.allowedAuthAlgorithms.get(WifiConfiguration.AuthAlgorithm.OPEN)) { 10104 numOpenNetworks++; 10105 } else if (config.isEnterprise()) { 10106 numEnterpriseNetworks++; 10107 } else { 10108 numPersonalNetworks++; 10109 } 10110 if (config.selfAdded) { 10111 numNetworksAddedByUser++; 10112 } else { 10113 numNetworksAddedByApps++; 10114 } 10115 } 10116 mWifiMetrics.setNumSavedNetworks(numSavedNetworks); 10117 mWifiMetrics.setNumOpenNetworks(numOpenNetworks); 10118 mWifiMetrics.setNumPersonalNetworks(numPersonalNetworks); 10119 mWifiMetrics.setNumEnterpriseNetworks(numEnterpriseNetworks); 10120 mWifiMetrics.setNumNetworksAddedByUser(numNetworksAddedByUser); 10121 mWifiMetrics.setNumNetworksAddedByApps(numNetworksAddedByApps); 10122 10123 /* <TODO> decide how to access WifiServiecImpl.isLocationEnabled() or if to do it manually 10124 mWifiMetrics.setIsLocationEnabled(Settings.Secure.getInt( 10125 mContext.getContentResolver(), 10126 Settings.Secure.LOCATION_MODE, Settings.Secure.LOCATION_MODE_OFF) 10127 != Settings.Secure.LOCATION_MODE_OFF); 10128 */ 10129 10130 /* <TODO> decide how statemachine will access WifiSettingsStore 10131 mWifiMetrics.setIsScanningAlwaysEnabled(mSettingsStore.isScanningAlwaysAvailable()); 10132 */ 10133 } 10134 10135 private static String getLinkPropertiesSummary(LinkProperties lp) { 10136 List<String> attributes = new ArrayList(6); 10137 if (lp.hasIPv4Address()) { 10138 attributes.add("v4"); 10139 } 10140 if (lp.hasIPv4DefaultRoute()) { 10141 attributes.add("v4r"); 10142 } 10143 if (lp.hasIPv4DnsServer()) { 10144 attributes.add("v4dns"); 10145 } 10146 if (lp.hasGlobalIPv6Address()) { 10147 attributes.add("v6"); 10148 } 10149 if (lp.hasIPv6DefaultRoute()) { 10150 attributes.add("v6r"); 10151 } 10152 if (lp.hasIPv6DnsServer()) { 10153 attributes.add("v6dns"); 10154 } 10155 10156 // TODO: Replace with String.join(" ", attributes) once we're fully on JDK 8. 10157 StringBuilder sb = new StringBuilder(); 10158 boolean first = true; 10159 for (String attr : attributes) { 10160 if (!first) { 10161 sb.append(" "); 10162 } else { 10163 first = false; 10164 } 10165 sb.append(attr); 10166 } 10167 return sb.toString(); 10168 } 10169 10170 /** 10171 * Try to connect to the network of candidate. According to the current connected network, this 10172 * API determines whether no action, disconnect and connect, or roaming. 10173 * 10174 * @param candidate the candidate network to connect to 10175 */ 10176 private void tryToConnectToNetwork(WifiConfiguration candidate) { 10177 if (candidate == null) { 10178 if (DBG) { 10179 Log.d(TAG, "Try to connect to null, give up"); 10180 } 10181 return; 10182 } 10183 10184 ScanResult scanResultCandidate = candidate.getNetworkSelectionStatus().getCandidate(); 10185 if (scanResultCandidate == null) { 10186 Log.e(TAG, "tryToConnectToNetwork: bad candidate. Network:" + candidate 10187 + " scanresult: " + scanResultCandidate); 10188 return; 10189 } 10190 10191 String targetBssid = scanResultCandidate.BSSID; 10192 String targetAssociationId = candidate.SSID + " : " + targetBssid; 10193 if (targetBssid != null && targetBssid.equals(mWifiInfo.getBSSID())) { 10194 if (DBG) { 10195 Log.d(TAG, "tryToConnectToNetwork: Already connect to" + targetAssociationId); 10196 } 10197 return; 10198 } 10199 10200 WifiConfiguration currentConnectedNetwork = mWifiConfigStore 10201 .getWifiConfiguration(mWifiInfo.getNetworkId()); 10202 String currentAssociationId = (currentConnectedNetwork == null) ? "Disconnected" : 10203 (mWifiInfo.getSSID() + " : " + mWifiInfo.getBSSID()); 10204 10205 if (currentConnectedNetwork != null 10206 && (currentConnectedNetwork.networkId == candidate.networkId 10207 || currentConnectedNetwork.isLinked(candidate))) { 10208 if (DBG) { 10209 Log.d(TAG, "tryToConnectToNetwork: Roaming from " + currentAssociationId + " to " 10210 + targetAssociationId); 10211 } 10212 sendMessage(CMD_AUTO_ROAM, candidate.networkId, 0, scanResultCandidate); 10213 } else { 10214 if (DBG) { 10215 Log.d(TAG, "tryToConnectToNetwork: Reconnect from " + currentAssociationId + " to " 10216 + targetAssociationId); 10217 } 10218 10219 sendMessage(CMD_AUTO_CONNECT, candidate.networkId, 0, scanResultCandidate.BSSID); 10220 } 10221 } 10222} 10223