WifiStateMachine.java revision 2532a24b254d724a9b6771d327dc410b32b18602
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wifi; 18 19import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 24import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 25import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 26import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 27import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 28import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 29 30import android.Manifest; 31import android.app.ActivityManager; 32import android.app.AlarmManager; 33import android.app.PendingIntent; 34import android.app.backup.IBackupManager; 35import android.bluetooth.BluetoothAdapter; 36import android.content.BroadcastReceiver; 37import android.content.Context; 38import android.content.Intent; 39import android.content.IntentFilter; 40import android.content.pm.ApplicationInfo; 41import android.content.pm.IPackageManager; 42import android.content.pm.PackageManager; 43import android.database.ContentObserver; 44import android.net.ConnectivityManager; 45import android.net.DhcpResults; 46import android.net.DhcpStateMachine; 47import android.net.InterfaceConfiguration; 48import android.net.LinkAddress; 49import android.net.LinkProperties; 50import android.net.Network; 51import android.net.NetworkAgent; 52import android.net.NetworkCapabilities; 53import android.net.NetworkFactory; 54import android.net.NetworkInfo; 55import android.net.NetworkInfo.DetailedState; 56import android.net.NetworkRequest; 57import android.net.NetworkUtils; 58import android.net.RouteInfo; 59import android.net.StaticIpConfiguration; 60import android.net.ip.IpManager; 61import android.net.wifi.PasspointManagementObjectDefinition; 62import android.net.wifi.RssiPacketCountInfo; 63import android.net.wifi.ScanResult; 64import android.net.wifi.ScanSettings; 65import android.net.wifi.SupplicantState; 66import android.net.wifi.WifiChannel; 67import android.net.wifi.WifiConfiguration; 68import android.net.wifi.WifiConnectionStatistics; 69import android.net.wifi.WifiEnterpriseConfig; 70import android.net.wifi.WifiInfo; 71import android.net.wifi.WifiLinkLayerStats; 72import android.net.wifi.WifiManager; 73import android.net.wifi.WifiScanner; 74import android.net.wifi.WifiSsid; 75import android.net.wifi.WpsInfo; 76import android.net.wifi.WpsResult; 77import android.net.wifi.WpsResult.Status; 78import android.net.wifi.p2p.IWifiP2pManager; 79import android.os.BatteryStats; 80import android.os.Binder; 81import android.os.Bundle; 82import android.os.IBinder; 83import android.os.INetworkManagementService; 84import android.os.Looper; 85import android.os.Message; 86import android.os.Messenger; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.SystemClock; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.WorkSource; 94import android.provider.Settings; 95import android.telephony.TelephonyManager; 96import android.text.TextUtils; 97import android.util.Log; 98import android.util.LruCache; 99 100import com.android.internal.R; 101import com.android.internal.app.IBatteryStats; 102import com.android.internal.util.AsyncChannel; 103import com.android.internal.util.Protocol; 104import com.android.internal.util.State; 105import com.android.internal.util.StateMachine; 106import com.android.server.connectivity.KeepalivePacketData; 107import com.android.server.wifi.hotspot2.IconEvent; 108import com.android.server.wifi.hotspot2.NetworkDetail; 109import com.android.server.wifi.hotspot2.Utils; 110import com.android.server.wifi.p2p.WifiP2pServiceImpl; 111 112import java.io.BufferedReader; 113import java.io.FileDescriptor; 114import java.io.FileNotFoundException; 115import java.io.FileReader; 116import java.io.IOException; 117import java.io.PrintWriter; 118import java.net.Inet4Address; 119import java.net.InetAddress; 120import java.util.ArrayList; 121import java.util.Arrays; 122import java.util.Calendar; 123import java.util.HashSet; 124import java.util.LinkedList; 125import java.util.List; 126import java.util.Locale; 127import java.util.Queue; 128import java.util.Random; 129import java.util.Set; 130import java.util.concurrent.atomic.AtomicBoolean; 131import java.util.concurrent.atomic.AtomicInteger; 132import java.util.regex.Pattern; 133 134/** 135 * TODO: 136 * Deprecate WIFI_STATE_UNKNOWN 137 */ 138 139/** 140 * Track the state of Wifi connectivity. All event handling is done here, 141 * and all changes in connectivity state are initiated here. 142 * 143 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 144 * In the current implementation, we support concurrent wifi p2p and wifi operation. 145 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 146 * handles p2p operation. 147 * 148 * @hide 149 */ 150public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler, 151 WifiNative.WifiRssiEventHandler { 152 153 private static final String NETWORKTYPE = "WIFI"; 154 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 155 private static boolean DBG = false; 156 private static boolean VDBG = false; 157 private static boolean VVDBG = false; 158 private static boolean USE_PAUSE_SCANS = false; 159 private static boolean mLogMessages = false; 160 private static final String TAG = "WifiStateMachine"; 161 162 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 163 164 private static final String GOOGLE_OUI = "DA-A1-19"; 165 166 /* temporary debug flag - best network selection development */ 167 private static boolean PDBG = false; 168 169 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 170 * the corresponding BSSID. 171 */ 172 private boolean didBlackListBSSID = false; 173 174 /** 175 * Log with error attribute 176 * 177 * @param s is string log 178 */ 179 protected void loge(String s) { 180 Log.e(getName(), s); 181 } 182 protected void logd(String s) { 183 Log.d(getName(), s); 184 } 185 protected void log(String s) {; 186 Log.d(getName(), s); 187 } 188 189 private WifiMetrics mWifiMetrics; 190 private WifiMonitor mWifiMonitor; 191 private WifiNative mWifiNative; 192 private WifiConfigStore mWifiConfigStore; 193 private WifiQualifiedNetworkSelector mWifiQualifiedNetworkSelector; 194 private INetworkManagementService mNwService; 195 private ConnectivityManager mCm; 196 private BaseWifiLogger mWifiLogger; 197 private WifiApConfigStore mWifiApConfigStore; 198 private final boolean mP2pSupported; 199 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 200 private boolean mTemporarilyDisconnectWifi = false; 201 private final String mPrimaryDeviceType; 202 203 /* Scan results handling */ 204 private List<ScanDetail> mScanResults = new ArrayList<>(); 205 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 206 private static final int SCAN_RESULT_CACHE_SIZE = 160; 207 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 208 // For debug, number of known scan results that were found as part of last scan result event, 209 // as well the number of scans results returned by the supplicant with that message 210 private int mNumScanResultsKnown; 211 private int mNumScanResultsReturned; 212 213 private boolean mScreenOn = false; 214 215 /* Chipset supports background scan */ 216 private final boolean mBackgroundScanSupported; 217 218 private final String mInterfaceName; 219 /* Tethering interface could be separate from wlan interface */ 220 private String mTetherInterfaceName; 221 222 private int mLastSignalLevel = -1; 223 private String mLastBssid; 224 private int mLastNetworkId; // The network Id we successfully joined 225 private ScanDetail mActiveScanDetail; // ScanDetail associated with active network 226 private boolean linkDebouncing = false; 227 228 private boolean mHalBasedPnoDriverSupported = false; 229 230 // Below booleans are configurations coming from the Developper Settings 231 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 232 private boolean mHalBasedPnoEnableInDevSettings = false; 233 234 private int mHalFeatureSet = 0; 235 private static int mPnoResultFound = 0; 236 237 private int mCurrentUserId = UserHandle.USER_SYSTEM; 238 239 private boolean mAllowUntrustedConnections = false; 240 241 @Override 242 public void onPnoNetworkFound(ScanResult results[]) { 243 if (DBG) { 244 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 245 for (int i = 0; i < results.length; i++) { 246 Log.e(TAG, results[i].toString()); 247 } 248 } 249 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 250 } 251 252 public void processPnoNetworkFound(ScanResult results[]) { 253 ScanSettings settings = new ScanSettings(); 254 settings.channelSet = new ArrayList<WifiChannel>(); 255 StringBuilder sb = new StringBuilder(); 256 sb.append(""); 257 for (int i=0; i<results.length; i++) { 258 WifiChannel channel = new WifiChannel(); 259 channel.freqMHz = results[i].frequency; 260 settings.channelSet.add(channel); 261 sb.append(results[i].SSID).append(" "); 262 } 263 264 stopPnoOffload(); 265 266 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 267 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 268 mPnoResultFound ++; 269 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 270 int delay = 30 * 1000; 271 // reconfigure Pno after 1 minutes if we're still in disconnected state 272 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 273 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 274 (long)delay); 275 mRestartAutoJoinOffloadCounter++; 276 } 277 278 @Override 279 public void onRssiThresholdBreached(byte curRssi) { 280 if (DBG) { 281 Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi); 282 } 283 sendMessage(CMD_RSSI_THRESHOLD_BREACH, curRssi); 284 } 285 286 public void processRssiThreshold(byte curRssi, int reason) { 287 if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) { 288 Log.wtf(TAG, "processRssiThreshold: Invalid rssi " + curRssi); 289 return; 290 } 291 for (int i = 0; i < mRssiRanges.length; i++) { 292 if (curRssi < mRssiRanges[i]) { 293 // Assume sorted values(ascending order) for rssi, 294 // bounded by high(127) and low(-128) at extremeties 295 byte maxRssi = mRssiRanges[i]; 296 byte minRssi = mRssiRanges[i-1]; 297 // This value of hw has to be believed as this value is averaged and has breached 298 // the rssi thresholds and raised event to host. This would be eggregious if this 299 // value is invalid 300 mWifiInfo.setRssi((int) curRssi); 301 updateCapabilities(getCurrentWifiConfiguration()); 302 int ret = startRssiMonitoringOffload(maxRssi, minRssi); 303 Log.d(TAG, "Re-program RSSI thresholds for " + smToString(reason) + 304 ": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret); 305 break; 306 } 307 } 308 } 309 public void registerNetworkDisabled(int netId) { 310 // Restart legacy PNO and autojoin offload if needed 311 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 312 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 313 mRestartAutoJoinOffloadCounter++; 314 } 315 316 // Testing various network disconnect cases by sending lots of spurious 317 // disconnect to supplicant 318 private boolean testNetworkDisconnect = false; 319 320 private boolean mEnableRssiPolling = false; 321 private boolean mLegacyPnoEnabled = false; 322 private int mRssiPollToken = 0; 323 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 324 * In CONNECT_MODE, the STA can scan and connect to an access point 325 * In SCAN_ONLY_MODE, the STA can only scan for access points 326 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 327 */ 328 private int mOperationalMode = CONNECT_MODE; 329 private boolean mIsScanOngoing = false; 330 private boolean mIsFullScanOngoing = false; 331 private boolean mSendScanResultsBroadcast = false; 332 333 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 334 private WorkSource mScanWorkSource = null; 335 private static final int UNKNOWN_SCAN_SOURCE = -1; 336 private static final int SCAN_ALARM_SOURCE = -2; 337 private static final int ADD_OR_UPDATE_SOURCE = -3; 338 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 339 private static final int ENABLE_WIFI = -5; 340 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 341 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 342 343 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 344 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 345 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 346 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 347 348 /* Tracks if state machine has received any screen state change broadcast yet. 349 * We can miss one of these at boot. 350 */ 351 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 352 353 private boolean mBluetoothConnectionActive = false; 354 355 private PowerManager.WakeLock mSuspendWakeLock; 356 357 /** 358 * Interval in milliseconds between polling for RSSI 359 * and linkspeed information 360 */ 361 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 362 363 /** 364 * Interval in milliseconds between receiving a disconnect event 365 * while connected to a good AP, and handling the disconnect proper 366 */ 367 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 368 369 /** 370 * Delay between supplicant restarts upon failure to establish connection 371 */ 372 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 373 374 /** 375 * Number of times we attempt to restart supplicant 376 */ 377 private static final int SUPPLICANT_RESTART_TRIES = 5; 378 379 private int mSupplicantRestartCount = 0; 380 /* Tracks sequence number on stop failure message */ 381 private int mSupplicantStopFailureToken = 0; 382 383 /** 384 * Tether state change notification time out 385 */ 386 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 387 388 /* Tracks sequence number on a tether notification time out */ 389 private int mTetherToken = 0; 390 391 /** 392 * Driver start time out. 393 */ 394 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 395 396 /* Tracks sequence number on a driver time out */ 397 private int mDriverStartToken = 0; 398 399 /** 400 * Don't select new network when previous network selection is 401 * pending connection for this much time 402 */ 403 private static final int CONNECT_TIMEOUT_MSEC = 3000; 404 405 /** 406 * The link properties of the wifi interface. 407 * Do not modify this directly; use updateLinkProperties instead. 408 */ 409 private LinkProperties mLinkProperties; 410 411 /* Tracks sequence number on a periodic scan message */ 412 private int mPeriodicScanToken = 0; 413 414 // Wakelock held during wifi start/stop and driver load/unload 415 private PowerManager.WakeLock mWakeLock; 416 417 private Context mContext; 418 419 private final Object mDhcpResultsLock = new Object(); 420 private DhcpResults mDhcpResults; 421 422 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 423 private WifiInfo mWifiInfo; 424 private NetworkInfo mNetworkInfo; 425 private final NetworkCapabilities mDfltNetworkCapabilities; 426 private SupplicantStateTracker mSupplicantStateTracker; 427 428 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 429 430 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 431 432 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 433 private boolean mAutoRoaming = false; 434 435 // Roaming failure count 436 private int mRoamFailCount = 0; 437 438 // This is the BSSID we are trying to associate to, it can be set to "any" 439 // if we havent selected a BSSID for joining. 440 // if we havent selected a BSSID for joining. 441 // The BSSID we are associated to is found in mWifiInfo 442 private String mTargetRoamBSSID = "any"; 443 //This one is used to track whta is the current target network ID. This is used for error 444 // handling during connection setup since many error message from supplicant does not report 445 // SSID Once connected, it will be set to invalid 446 private int mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 447 448 private long mLastDriverRoamAttempt = 0; 449 450 private WifiConfiguration targetWificonfiguration = null; 451 452 // Used as debug to indicate which configuration last was saved 453 private WifiConfiguration lastSavedConfigurationAttempt = null; 454 455 // Used as debug to indicate which configuration last was removed 456 private WifiConfiguration lastForgetConfigurationAttempt = null; 457 458 //Random used by softAP channel Selection 459 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 460 461 boolean isRoaming() { 462 return mAutoRoaming; 463 } 464 465 public void autoRoamSetBSSID(int netId, String bssid) { 466 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 467 } 468 469 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 470 boolean ret = true; 471 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 472 if (bssid == null) bssid = "any"; 473 if (config == null) return false; // Nothing to do 474 475 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 476 return false; // We didnt change anything 477 } 478 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 479 // Changing to ANY 480 if (!mWifiConfigStore.roamOnAny) { 481 ret = false; // Nothing to do 482 } 483 } 484 if (config.BSSID != null) { 485 bssid = config.BSSID; 486 if (DBG) { 487 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 488 } 489 } 490 491 if (VDBG) { 492 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 493 } 494 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 495 mTargetRoamBSSID = bssid; 496 mWifiConfigStore.saveWifiConfigBSSID(config); 497 return ret; 498 } 499 500 /** 501 * set Config's default BSSID (for association purpose) 502 * @param config config need set BSSID 503 * @param bssid default BSSID to assocaite with when connect to this network 504 * @return false -- does not change the current default BSSID of the configure 505 * true -- change the current default BSSID of the configur 506 */ 507 private boolean setTargetBssid(WifiConfiguration config, String bssid) { 508 if (config == null) { 509 return false; 510 } 511 512 if (config.BSSID != null) { 513 bssid = config.BSSID; 514 if (DBG) { 515 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 516 } 517 } 518 519 if (bssid == null) { 520 bssid = "any"; 521 } 522 523 String networkSelectionBSSID = config.getNetworkSelectionStatus() 524 .getNetworkSelectionBSSID(); 525 if (networkSelectionBSSID != null && networkSelectionBSSID.equals(bssid)) { 526 if (DBG) { 527 Log.d(TAG, "Current prefered BSSID is same as target"); 528 return false; 529 } 530 } 531 532 if (DBG) { 533 Log.d(TAG, "target set to " + config.SSID + ":" + bssid); 534 } 535 536 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 537 mTargetRoamBSSID = bssid; 538 mWifiConfigStore.saveWifiConfigBSSID(config); 539 return true; 540 } 541 /** 542 * Save the UID correctly depending on if this is a new or existing network. 543 * @return true if operation is authorized, false otherwise 544 */ 545 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 546 if (!mWifiConfigStore.isNetworkConfigured(config)) { 547 config.creatorUid = uid; 548 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 549 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 550 return false; 551 } 552 553 config.lastUpdateUid = uid; 554 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 555 556 return true; 557 558 } 559 560 /** 561 * Checks to see if user has specified if the apps configuration is connectable. 562 * If the user hasn't specified we query the user and return true. 563 * 564 * @param message The message to be deferred 565 * @param netId Network id of the configuration to check against 566 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 567 * CONFIG_OVERRIDE_PERMISSION 568 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 569 */ 570 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 571 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 572 573 // We can only evaluate saved configurations. 574 if (config == null) { 575 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 576 return true; 577 } 578 579 switch (config.userApproved) { 580 case WifiConfiguration.USER_APPROVED: 581 case WifiConfiguration.USER_BANNED: 582 return false; 583 case WifiConfiguration.USER_PENDING: 584 default: // USER_UNSPECIFIED 585 /* the intention was to ask user here; but a dialog box is * 586 * too invasive; so we are going to allow connection for now */ 587 config.userApproved = WifiConfiguration.USER_APPROVED; 588 return false; 589 } 590 } 591 592 private final IpManager mIpManager; 593 594 private AlarmManager mAlarmManager; 595 private PendingIntent mScanIntent; 596 private PendingIntent mDriverStopIntent; 597 private PendingIntent mPnoIntent; 598 599 private int mDisconnectedPnoAlarmCount = 0; 600 /* Tracks current frequency mode */ 601 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 602 603 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 604 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 605 606 // Channel for sending replies. 607 private AsyncChannel mReplyChannel = new AsyncChannel(); 608 609 private WifiP2pServiceImpl mWifiP2pServiceImpl; 610 611 // Used to initiate a connection with WifiP2pService 612 private AsyncChannel mWifiP2pChannel; 613 614 private WifiScanner mWifiScanner; 615 616 private int mConnectionRequests = 0; 617 private WifiNetworkFactory mNetworkFactory; 618 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 619 private WifiNetworkAgent mNetworkAgent; 620 621 private String[] mWhiteListedSsids = null; 622 623 private byte[] mRssiRanges; 624 625 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 626 // We should really persist that into the networkHistory.txt file, and read it back when 627 // WifiStateMachine starts up 628 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 629 630 // Used to filter out requests we couldn't possibly satisfy. 631 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 632 633 /* The base for wifi message types */ 634 static final int BASE = Protocol.BASE_WIFI; 635 /* Start the supplicant */ 636 static final int CMD_START_SUPPLICANT = BASE + 11; 637 /* Stop the supplicant */ 638 static final int CMD_STOP_SUPPLICANT = BASE + 12; 639 /* Start the driver */ 640 static final int CMD_START_DRIVER = BASE + 13; 641 /* Stop the driver */ 642 static final int CMD_STOP_DRIVER = BASE + 14; 643 /* Indicates Static IP succeeded */ 644 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 645 /* Indicates Static IP failed */ 646 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 647 /* Indicates supplicant stop failed */ 648 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 649 /* A delayed message sent to start driver when it fail to come up */ 650 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 651 652 /* Start the soft access point */ 653 static final int CMD_START_AP = BASE + 21; 654 /* Indicates soft ap start succeeded */ 655 static final int CMD_START_AP_SUCCESS = BASE + 22; 656 /* Indicates soft ap start failed */ 657 static final int CMD_START_AP_FAILURE = BASE + 23; 658 /* Stop the soft access point */ 659 static final int CMD_STOP_AP = BASE + 24; 660 /* Invoked when getting a tether state change notification */ 661 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 662 /* A delayed message sent to indicate tether state change failed to arrive */ 663 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 664 665 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 666 667 /* Supplicant commands */ 668 /* Is supplicant alive ? */ 669 static final int CMD_PING_SUPPLICANT = BASE + 51; 670 /* Add/update a network configuration */ 671 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 672 /* Delete a network */ 673 static final int CMD_REMOVE_NETWORK = BASE + 53; 674 /* Enable a network. The device will attempt a connection to the given network. */ 675 static final int CMD_ENABLE_NETWORK = BASE + 54; 676 /* Enable all networks */ 677 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 678 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 679 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 680 /* Clear the blacklist network list */ 681 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 682 /* Save configuration */ 683 static final int CMD_SAVE_CONFIG = BASE + 58; 684 /* Get configured networks */ 685 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 686 /* Get available frequencies */ 687 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 688 /* Get adaptors */ 689 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 690 /* Get configured networks with real preSharedKey */ 691 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 692 /* Get Link Layer Stats thru HAL */ 693 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 694 /* Supplicant commands after driver start*/ 695 /* Initiate a scan */ 696 static final int CMD_START_SCAN = BASE + 71; 697 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 698 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 699 /* Disconnect from a network */ 700 static final int CMD_DISCONNECT = BASE + 73; 701 /* Reconnect to a network */ 702 static final int CMD_RECONNECT = BASE + 74; 703 /* Reassociate to a network */ 704 static final int CMD_REASSOCIATE = BASE + 75; 705 /* Get Connection Statistis */ 706 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 707 708 /* Controls suspend mode optimizations 709 * 710 * When high perf mode is enabled, suspend mode optimizations are disabled 711 * 712 * When high perf mode is disabled, suspend mode optimizations are enabled 713 * 714 * Suspend mode optimizations include: 715 * - packet filtering 716 * - turn off roaming 717 * - DTIM wake up settings 718 */ 719 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 720 /* Set the country code */ 721 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 722 /* Enables RSSI poll */ 723 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 724 /* RSSI poll */ 725 static final int CMD_RSSI_POLL = BASE + 83; 726 /* Set up packet filtering */ 727 static final int CMD_START_PACKET_FILTERING = BASE + 84; 728 /* Clear packet filter */ 729 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 730 /* Enable suspend mode optimizations in the driver */ 731 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 732 /* Delayed NETWORK_DISCONNECT */ 733 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 734 /* When there are no saved networks, we do a periodic scan to notify user of 735 * an open network */ 736 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 737 /* Test network Disconnection NETWORK_DISCONNECT */ 738 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 739 740 private int testNetworkDisconnectCounter = 0; 741 742 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 743 static final int MULTICAST_V6 = 1; 744 static final int MULTICAST_V4 = 0; 745 746 /* Set the frequency band */ 747 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 748 /* Enable TDLS on a specific MAC address */ 749 static final int CMD_ENABLE_TDLS = BASE + 92; 750 /* DHCP/IP configuration watchdog */ 751 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 752 753 /** 754 * Watchdog for protecting against b/16823537 755 * Leave time for 4-way handshake to succeed 756 */ 757 static final int ROAM_GUARD_TIMER_MSEC = 15000; 758 759 int roamWatchdogCount = 0; 760 /* Roam state watchdog */ 761 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 762 /* Screen change intent handling */ 763 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 764 765 /* Disconnecting state watchdog */ 766 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 767 768 /* Remove a packages associated configrations */ 769 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 770 771 /* Disable an ephemeral network */ 772 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 773 774 /* Get matching network */ 775 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 776 777 /* alert from firmware */ 778 static final int CMD_FIRMWARE_ALERT = BASE + 100; 779 780 /* SIM is removed; reset any cached data for it */ 781 static final int CMD_RESET_SIM_NETWORKS = BASE + 101; 782 783 /* OSU APIs */ 784 static final int CMD_ADD_PASSPOINT_MO = BASE + 102; 785 static final int CMD_MODIFY_PASSPOINT_MO = BASE + 103; 786 static final int CMD_QUERY_OSU_ICON = BASE + 104; 787 788 /* try to match a provider with current network */ 789 static final int CMD_MATCH_PROVIDER_NETWORK = BASE + 105; 790 791 /** 792 * Make this timer 40 seconds, which is about the normal DHCP timeout. 793 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 794 * for more than 30 seconds. 795 */ 796 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 797 798 int obtainingIpWatchdogCount = 0; 799 800 /* Commands from/to the SupplicantStateTracker */ 801 /* Reset the supplicant state tracker */ 802 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 803 804 int disconnectingWatchdogCount = 0; 805 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 806 807 /* P2p commands */ 808 /* We are ok with no response here since we wont do much with it anyway */ 809 public static final int CMD_ENABLE_P2P = BASE + 131; 810 /* In order to shut down supplicant cleanly, we wait till p2p has 811 * been disabled */ 812 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 813 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 814 815 public static final int CMD_BOOT_COMPLETED = BASE + 134; 816 817 /* We now have a valid IP configuration. */ 818 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 819 /* We no longer have a valid IP configuration. */ 820 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 821 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 822 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 823 824 /* Supplicant is trying to associate to a given BSSID */ 825 static final int CMD_TARGET_BSSID = BASE + 141; 826 827 /* Reload all networks and reconnect */ 828 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 829 830 static final int CMD_AUTO_CONNECT = BASE + 143; 831 832 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 833 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 834 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 835 836 static final int CMD_UNWANTED_NETWORK = BASE + 144; 837 838 static final int CMD_AUTO_ROAM = BASE + 145; 839 840 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 841 842 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 843 844 static final int CMD_NETWORK_STATUS = BASE + 148; 845 846 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 847 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 848 849 /* Remove a packages associated configrations */ 850 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 851 852 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 853 854 /* used to restart PNO when it was stopped due to association attempt */ 855 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 856 857 static int mRestartAutoJoinOffloadCounter = 0; 858 859 /* used to log if PNO was started */ 860 static final int CMD_STARTED_PNO_DBG = BASE + 155; 861 862 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 863 864 /* used to log if PNO was started */ 865 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 866 867 /* used to log if GSCAN was started */ 868 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 869 870 /* used to offload sending IP packet */ 871 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 872 873 /* used to stop offload sending IP packet */ 874 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 875 876 /* used to start rssi monitoring in hw */ 877 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 878 879 /* used to stop rssi moniroting in hw */ 880 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 881 882 /* used to indicated RSSI threshold breach in hw */ 883 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 884 885 /* used to indicate that the foreground user was switched */ 886 static final int CMD_USER_SWITCH = BASE + 165; 887 888 /** 889 * Used temporarily to handle messages bounced between WifiStateMachine and IpManager. 890 * 891 * These will be deleted when DHCPv4 and static IP configuration are moved out. 892 */ 893 static final int CMD_IPV4_PROVISIONING_SUCCESS = BASE + 200; 894 static final int CMD_IPV4_PROVISIONING_FAILURE = BASE + 201; 895 896 897 /* Wifi state machine modes of operation */ 898 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 899 public static final int CONNECT_MODE = 1; 900 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 901 public static final int SCAN_ONLY_MODE = 2; 902 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 903 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 904 905 private static final int SUCCESS = 1; 906 private static final int FAILURE = -1; 907 908 /* Tracks if suspend optimizations need to be disabled by DHCP, 909 * screen or due to high perf mode. 910 * When any of them needs to disable it, we keep the suspend optimizations 911 * disabled 912 */ 913 private int mSuspendOptNeedsDisabled = 0; 914 915 private static final int SUSPEND_DUE_TO_DHCP = 1; 916 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 917 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 918 919 /* Tracks if user has enabled suspend optimizations through settings */ 920 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 921 922 /** 923 * Default framework scan interval in milliseconds. This is used in the scenario in which 924 * wifi chipset does not support background scanning to set up a 925 * periodic wake up scan so that the device can connect to a new access 926 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 927 * override this. 928 */ 929 private final int mDefaultFrameworkScanIntervalMs; 930 931 932 /** 933 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 934 */ 935 private final int mNoNetworksPeriodicScan; 936 937 /** 938 * Supplicant scan interval in milliseconds. 939 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 940 * from the default config if the setting is not set 941 */ 942 private long mSupplicantScanIntervalMs; 943 944 /** 945 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 946 */ 947 private long lastFullBandConnectedTimeMilli; 948 949 /** 950 * time interval to the next full band scan we will perform for 951 * autojoin while connected with screen lit 952 */ 953 private long fullBandConnectedTimeIntervalMilli; 954 955 /** 956 * max time interval to the next full band scan we will perform for 957 * autojoin while connected with screen lit 958 * Max time is 5 minutes 959 */ 960 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 961 962 /** 963 * Minimum time interval between enabling all networks. 964 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 965 * due to enabling every time. We add a threshold to avoid this. 966 */ 967 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 968 private long mLastEnableAllNetworksTime; 969 970 int mRunningBeaconCount = 0; 971 972 973 // config option that indicate whether or not to reset country code to default when 974 // cellular radio indicates country code loss 975 private boolean mRevertCountryCodeOnCellularLoss = false; 976 977 private String mDefaultCountryCode; 978 979 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 980 981 // Supplicant doesn't like setting the same country code multiple times (it may drop 982 // currently connected network), so we save the current device set country code here to avoid 983 // redundency 984 private String mDriverSetCountryCode = null; 985 986 /* Default parent state */ 987 private State mDefaultState = new DefaultState(); 988 /* Temporary initial state */ 989 private State mInitialState = new InitialState(); 990 /* Driver loaded, waiting for supplicant to start */ 991 private State mSupplicantStartingState = new SupplicantStartingState(); 992 /* Driver loaded and supplicant ready */ 993 private State mSupplicantStartedState = new SupplicantStartedState(); 994 /* Waiting for supplicant to stop and monitor to exit */ 995 private State mSupplicantStoppingState = new SupplicantStoppingState(); 996 /* Driver start issued, waiting for completed event */ 997 private State mDriverStartingState = new DriverStartingState(); 998 /* Driver started */ 999 private State mDriverStartedState = new DriverStartedState(); 1000 /* Wait until p2p is disabled 1001 * This is a special state which is entered right after we exit out of DriverStartedState 1002 * before transitioning to another state. 1003 */ 1004 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 1005 /* Driver stopping */ 1006 private State mDriverStoppingState = new DriverStoppingState(); 1007 /* Driver stopped */ 1008 private State mDriverStoppedState = new DriverStoppedState(); 1009 /* Scan for networks, no connection will be established */ 1010 private State mScanModeState = new ScanModeState(); 1011 /* Connecting to an access point */ 1012 private State mConnectModeState = new ConnectModeState(); 1013 /* Connected at 802.11 (L2) level */ 1014 private State mL2ConnectedState = new L2ConnectedState(); 1015 /* fetching IP after connection to access point (assoc+auth complete) */ 1016 private State mObtainingIpState = new ObtainingIpState(); 1017 /* Connected with IP addr */ 1018 private State mConnectedState = new ConnectedState(); 1019 /* Roaming */ 1020 private State mRoamingState = new RoamingState(); 1021 /* disconnect issued, waiting for network disconnect confirmation */ 1022 private State mDisconnectingState = new DisconnectingState(); 1023 /* Network is not connected, supplicant assoc+auth is not complete */ 1024 private State mDisconnectedState = new DisconnectedState(); 1025 /* Waiting for WPS to be completed*/ 1026 private State mWpsRunningState = new WpsRunningState(); 1027 1028 /* Soft ap is starting up */ 1029 private State mSoftApStartingState = new SoftApStartingState(); 1030 /* Soft ap is running */ 1031 private State mSoftApStartedState = new SoftApStartedState(); 1032 /* Soft ap is running and we are waiting for tether notification */ 1033 private State mTetheringState = new TetheringState(); 1034 /* Soft ap is running and we are tethered through connectivity service */ 1035 private State mTetheredState = new TetheredState(); 1036 /* Waiting for untether confirmation before stopping soft Ap */ 1037 private State mUntetheringState = new UntetheringState(); 1038 1039 1040 1041 private class WifiScanListener implements WifiScanner.ScanListener { 1042 @Override 1043 public void onSuccess() { 1044 Log.e(TAG, "WifiScanListener onSuccess"); 1045 }; 1046 @Override 1047 public void onFailure(int reason, String description) { 1048 Log.e(TAG, "WifiScanListener onFailure"); 1049 }; 1050 @Override 1051 public void onPeriodChanged(int periodInMs) { 1052 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1053 } 1054 @Override 1055 public void onResults(WifiScanner.ScanData[] results) { 1056 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1057 } 1058 @Override 1059 public void onFullResult(ScanResult fullScanResult) { 1060 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1061 } 1062 1063 WifiScanListener() {} 1064 } 1065 1066 WifiScanListener mWifiScanListener = new WifiScanListener(); 1067 1068 1069 private class TetherStateChange { 1070 ArrayList<String> available; 1071 ArrayList<String> active; 1072 1073 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1074 available = av; 1075 active = ac; 1076 } 1077 } 1078 1079 public static class SimAuthRequestData { 1080 int networkId; 1081 int protocol; 1082 String ssid; 1083 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1084 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1085 String[] data; 1086 } 1087 1088 /** 1089 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1090 * {@link WifiManager#WIFI_STATE_DISABLING}, 1091 * {@link WifiManager#WIFI_STATE_ENABLED}, 1092 * {@link WifiManager#WIFI_STATE_ENABLING}, 1093 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1094 */ 1095 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1096 1097 /** 1098 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1099 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1100 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1101 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1102 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1103 */ 1104 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1105 1106 private static final int SCAN_REQUEST = 0; 1107 private static final String ACTION_START_SCAN = 1108 "com.android.server.WifiManager.action.START_SCAN"; 1109 1110 private static final int PNO_START_REQUEST = 0; 1111 private static final String ACTION_START_PNO = 1112 "com.android.server.WifiManager.action.START_PNO"; 1113 1114 /** 1115 * Keep track of whether WIFI is running. 1116 */ 1117 private boolean mIsRunning = false; 1118 1119 /** 1120 * Keep track of whether we last told the battery stats we had started. 1121 */ 1122 private boolean mReportedRunning = false; 1123 1124 /** 1125 * Most recently set source of starting WIFI. 1126 */ 1127 private final WorkSource mRunningWifiUids = new WorkSource(); 1128 1129 /** 1130 * The last reported UIDs that were responsible for starting WIFI. 1131 */ 1132 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1133 1134 private final IBatteryStats mBatteryStats; 1135 1136 private String mTcpBufferSizes = null; 1137 1138 // Used for debug and stats gathering 1139 private static int sScanAlarmIntentCount = 0; 1140 1141 private static final int sFrameworkMinScanIntervalSaneValue = 10000; 1142 1143 private boolean mPnoEnabled; 1144 private boolean mLazyRoamEnabled; 1145 private long mGScanStartTimeMilli; 1146 private long mGScanPeriodMilli; 1147 1148 private FrameworkFacade mFacade; 1149 1150 public WifiStateMachine(Context context, WifiTrafficPoller trafficPoller, 1151 FrameworkFacade facade, WifiMetrics wifiMetrics) { 1152 super("WifiStateMachine"); 1153 mWifiMetrics = wifiMetrics; 1154 mContext = context; 1155 mFacade = facade; 1156 mWifiNative = WifiNative.getWlanNativeInterface(); 1157 1158 // TODO refactor WifiNative use of context out into it's own class 1159 mWifiNative.initContext(mContext); 1160 mInterfaceName = mWifiNative.getInterfaceName(); 1161 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1162 mBatteryStats = IBatteryStats.Stub.asInterface(mFacade.getService( 1163 BatteryStats.SERVICE_NAME)); 1164 1165 IBinder b = mFacade.getService(Context.NETWORKMANAGEMENT_SERVICE); 1166 mNwService = INetworkManagementService.Stub.asInterface(b); 1167 1168 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1169 PackageManager.FEATURE_WIFI_DIRECT); 1170 1171 mWifiConfigStore = new WifiConfigStore(context, this, mWifiNative, facade); 1172 1173 mWifiMonitor = WifiMonitor.getInstance(); 1174 1175 boolean enableFirmwareLogs = mContext.getResources().getBoolean( 1176 R.bool.config_wifi_enable_wifi_firmware_debugging); 1177 1178 if (enableFirmwareLogs) { 1179 mWifiLogger = facade.makeRealLogger(this, mWifiNative); 1180 } else { 1181 mWifiLogger = facade.makeBaseLogger(); 1182 } 1183 1184 mWifiInfo = new WifiInfo(); 1185 mWifiQualifiedNetworkSelector = new WifiQualifiedNetworkSelector(mWifiConfigStore, mContext, 1186 mWifiInfo); 1187 mSupplicantStateTracker = mFacade.makeSupplicantStateTracker( 1188 context, this, mWifiConfigStore, getHandler()); 1189 1190 mLinkProperties = new LinkProperties(); 1191 1192 IBinder s1 = mFacade.getService(Context.WIFI_P2P_SERVICE); 1193 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1194 1195 mNetworkInfo.setIsAvailable(false); 1196 mLastBssid = null; 1197 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1198 mLastSignalLevel = -1; 1199 1200 mIpManager = mFacade.makeIpManager(mContext, mInterfaceName, new IpManagerCallback()); 1201 1202 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1203 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1204 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1205 1206 // Make sure the interval is not configured less than 10 seconds 1207 int period = mContext.getResources().getInteger( 1208 R.integer.config_wifi_framework_scan_interval); 1209 if (period < sFrameworkMinScanIntervalSaneValue) { 1210 period = sFrameworkMinScanIntervalSaneValue; 1211 } 1212 mDefaultFrameworkScanIntervalMs = period; 1213 1214 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1215 R.integer.config_wifi_no_network_periodic_scan_interval); 1216 1217 mBackgroundScanSupported = mContext.getResources().getBoolean( 1218 R.bool.config_wifi_background_scan_support); 1219 1220 mPrimaryDeviceType = mContext.getResources().getString( 1221 R.string.config_wifi_p2p_device_type); 1222 1223 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1224 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1225 1226 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1227 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1228 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1229 } 1230 1231 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1232 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1233 "but there is no default country code!! Resetting ..."); 1234 mRevertCountryCodeOnCellularLoss = false; 1235 } else if (mRevertCountryCodeOnCellularLoss) { 1236 logd("initializing with and will revert to " + mDefaultCountryCode + " on MCC loss"); 1237 } 1238 1239 if (mRevertCountryCodeOnCellularLoss) { 1240 Settings.Global.putString(mContext.getContentResolver(), 1241 Settings.Global.WIFI_COUNTRY_CODE, mDefaultCountryCode); 1242 } 1243 1244 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1245 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1246 1247 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1248 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1249 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1250 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1251 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1252 // TODO - needs to be a bit more dynamic 1253 mDfltNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1254 1255 mContext.registerReceiver( 1256 new BroadcastReceiver() { 1257 @Override 1258 public void onReceive(Context context, Intent intent) { 1259 ArrayList<String> available = intent.getStringArrayListExtra( 1260 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1261 ArrayList<String> active = intent.getStringArrayListExtra( 1262 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1263 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1264 } 1265 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1266 1267 mContext.registerReceiver( 1268 new BroadcastReceiver() { 1269 @Override 1270 public void onReceive(Context context, Intent intent) { 1271 sScanAlarmIntentCount++; // Used for debug only 1272 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1273 if (VDBG) 1274 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1275 } 1276 }, 1277 new IntentFilter(ACTION_START_SCAN)); 1278 1279 mContext.registerReceiver( 1280 new BroadcastReceiver() { 1281 @Override 1282 public void onReceive(Context context, Intent intent) { 1283 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1284 mRestartAutoJoinOffloadCounter, "pno alarm"); 1285 if (DBG) 1286 logd("PNO START ALARM sent"); 1287 } 1288 }, 1289 new IntentFilter(ACTION_START_PNO)); 1290 1291 1292 IntentFilter filter = new IntentFilter(); 1293 filter.addAction(Intent.ACTION_SCREEN_ON); 1294 filter.addAction(Intent.ACTION_SCREEN_OFF); 1295 mContext.registerReceiver( 1296 new BroadcastReceiver() { 1297 @Override 1298 public void onReceive(Context context, Intent intent) { 1299 String action = intent.getAction(); 1300 1301 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1302 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1303 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1304 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1305 } 1306 } 1307 }, filter); 1308 1309 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1310 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1311 new ContentObserver(getHandler()) { 1312 @Override 1313 public void onChange(boolean selfChange) { 1314 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1315 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1316 } 1317 }); 1318 1319 mContext.registerReceiver( 1320 new BroadcastReceiver() { 1321 @Override 1322 public void onReceive(Context context, Intent intent) { 1323 sendMessage(CMD_BOOT_COMPLETED); 1324 } 1325 }, 1326 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1327 1328 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1329 1330 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1331 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1332 1333 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1334 mSuspendWakeLock.setReferenceCounted(false); 1335 1336 mTcpBufferSizes = mContext.getResources().getString( 1337 com.android.internal.R.string.config_wifi_tcp_buffers); 1338 1339 addState(mDefaultState); 1340 addState(mInitialState, mDefaultState); 1341 addState(mSupplicantStartingState, mDefaultState); 1342 addState(mSupplicantStartedState, mDefaultState); 1343 addState(mDriverStartingState, mSupplicantStartedState); 1344 addState(mDriverStartedState, mSupplicantStartedState); 1345 addState(mScanModeState, mDriverStartedState); 1346 addState(mConnectModeState, mDriverStartedState); 1347 addState(mL2ConnectedState, mConnectModeState); 1348 addState(mObtainingIpState, mL2ConnectedState); 1349 addState(mConnectedState, mL2ConnectedState); 1350 addState(mRoamingState, mL2ConnectedState); 1351 addState(mDisconnectingState, mConnectModeState); 1352 addState(mDisconnectedState, mConnectModeState); 1353 addState(mWpsRunningState, mConnectModeState); 1354 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1355 addState(mDriverStoppingState, mSupplicantStartedState); 1356 addState(mDriverStoppedState, mSupplicantStartedState); 1357 addState(mSupplicantStoppingState, mDefaultState); 1358 addState(mSoftApStartingState, mDefaultState); 1359 addState(mSoftApStartedState, mDefaultState); 1360 addState(mTetheringState, mSoftApStartedState); 1361 addState(mTetheredState, mSoftApStartedState); 1362 addState(mUntetheringState, mSoftApStartedState); 1363 1364 setInitialState(mInitialState); 1365 1366 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1367 setLogOnlyTransitions(false); 1368 if (VDBG) setDbg(true); 1369 1370 //start the state machine 1371 start(); 1372 1373 mWifiMonitor.registerHandler(mInterfaceName, CMD_TARGET_BSSID, getHandler()); 1374 mWifiMonitor.registerHandler(mInterfaceName, CMD_ASSOCIATED_BSSID, getHandler()); 1375 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ANQP_DONE_EVENT, getHandler()); 1376 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ASSOCIATION_REJECTION_EVENT, 1377 getHandler()); 1378 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.AUTHENTICATION_FAILURE_EVENT, 1379 getHandler()); 1380 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.DRIVER_HUNG_EVENT, getHandler()); 1381 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_DONE_EVENT, getHandler()); 1382 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_START_EVENT, 1383 getHandler()); 1384 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.HS20_REMEDIATION_EVENT, 1385 getHandler()); 1386 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_CONNECTION_EVENT, 1387 getHandler()); 1388 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_DISCONNECTION_EVENT, 1389 getHandler()); 1390 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.RX_HS20_ANQP_ICON_EVENT, 1391 getHandler()); 1392 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_FAILED_EVENT, getHandler()); 1393 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_RESULTS_EVENT, getHandler()); 1394 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_REENABLED, getHandler()); 1395 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_TEMP_DISABLED, getHandler()); 1396 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_CONNECTION_EVENT, getHandler()); 1397 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_DISCONNECTION_EVENT, 1398 getHandler()); 1399 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT, 1400 getHandler()); 1401 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_IDENTITY, getHandler()); 1402 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_SIM_AUTH, getHandler()); 1403 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_FAIL_EVENT, getHandler()); 1404 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_OVERLAP_EVENT, getHandler()); 1405 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_SUCCESS_EVENT, getHandler()); 1406 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_TIMEOUT_EVENT, getHandler()); 1407 1408 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1409 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1410 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1411 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1412 } 1413 1414 class IpManagerCallback extends IpManager.Callback { 1415 @Override 1416 public boolean usingIpReachabilityMonitor() { 1417 return true; 1418 } 1419 1420 @Override 1421 public void onPreDhcpAction() { 1422 sendMessage(DhcpStateMachine.CMD_PRE_DHCP_ACTION); 1423 } 1424 1425 @Override 1426 public void onPostDhcpAction() { 1427 sendMessage(DhcpStateMachine.CMD_POST_DHCP_ACTION); 1428 } 1429 1430 @Override 1431 public void onNewDhcpResults(DhcpResults dhcpResults) { 1432 if (dhcpResults != null) { 1433 sendMessage(CMD_IPV4_PROVISIONING_SUCCESS, dhcpResults); 1434 } else { 1435 sendMessage(CMD_IPV4_PROVISIONING_FAILURE); 1436 } 1437 } 1438 1439 @Override 1440 public void onProvisioningSuccess(LinkProperties newLp) { 1441 sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); 1442 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 1443 } 1444 1445 @Override 1446 public void onProvisioningFailure(LinkProperties newLp) { 1447 sendMessage(CMD_IP_CONFIGURATION_LOST); 1448 } 1449 1450 @Override 1451 public void onLinkPropertiesChange(LinkProperties newLp) { 1452 sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); 1453 } 1454 1455 @Override 1456 public void onReachabilityLost(String logMsg) { 1457 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 1458 } 1459 } 1460 1461 private void stopIpManager() { 1462 /* Restore power save and suspend optimizations */ 1463 handlePostDhcpSetup(); 1464 mIpManager.stop(); 1465 } 1466 1467 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1468 Intent intent = new Intent(action, null); 1469 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1470 intent.setPackage("android"); 1471 return mFacade.getBroadcast(mContext, requestCode, intent, 0); 1472 } 1473 1474 private int mVerboseLoggingLevel = 0; 1475 1476 int getVerboseLoggingLevel() { 1477 return mVerboseLoggingLevel; 1478 } 1479 1480 void enableVerboseLogging(int verbose) { 1481 mVerboseLoggingLevel = verbose; 1482 if (verbose > 0) { 1483 DBG = true; 1484 VDBG = true; 1485 PDBG = true; 1486 mLogMessages = true; 1487 mWifiNative.setSupplicantLogLevel("DEBUG"); 1488 } else { 1489 DBG = false; 1490 VDBG = false; 1491 PDBG = false; 1492 mLogMessages = false; 1493 mWifiNative.setSupplicantLogLevel("INFO"); 1494 } 1495 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1496 mWifiMonitor.enableVerboseLogging(verbose); 1497 mWifiNative.enableVerboseLogging(verbose); 1498 mWifiConfigStore.enableVerboseLogging(verbose); 1499 mSupplicantStateTracker.enableVerboseLogging(verbose); 1500 mWifiQualifiedNetworkSelector.enableVerboseLogging(verbose); 1501 } 1502 1503 public void setHalBasedAutojoinOffload(int enabled) { 1504 // Shoult be used for debug only, triggered form developper settings 1505 // enabling HAl based PNO dynamically is not safe and not a normal operation 1506 mHalBasedPnoEnableInDevSettings = enabled > 0; 1507 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1508 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1509 sendMessage(CMD_DISCONNECT); 1510 } 1511 1512 int getHalBasedAutojoinOffload() { 1513 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1514 } 1515 1516 boolean useHalBasedAutoJoinOffload() { 1517 // all three settings need to be true: 1518 // - developper settings switch 1519 // - driver support 1520 // - config option 1521 return mHalBasedPnoEnableInDevSettings 1522 && mHalBasedPnoDriverSupported 1523 && mWifiConfigStore.enableHalBasedPno.get(); 1524 } 1525 1526 boolean allowFullBandScanAndAssociated() { 1527 1528 if (!getEnableAutoJoinWhenAssociated()) { 1529 if (DBG) { 1530 Log.e(TAG, "allowFullBandScanAndAssociated: " 1531 + " enableAutoJoinWhenAssociated : disallow"); 1532 } 1533 return false; 1534 } 1535 1536 if (mWifiInfo.txSuccessRate > 1537 mWifiConfigStore.maxTxPacketForFullScans 1538 || mWifiInfo.rxSuccessRate > 1539 mWifiConfigStore.maxRxPacketForFullScans) { 1540 if (DBG) { 1541 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1542 + mWifiInfo.txSuccessRate + " rx " 1543 + mWifiInfo.rxSuccessRate 1544 + " allow scan with traffic " + getAllowScansWithTraffic()); 1545 } 1546 // Too much traffic at the interface, hence no full band scan 1547 if (getAllowScansWithTraffic() == 0) { 1548 return false; 1549 } 1550 } 1551 1552 if (getCurrentState() != mConnectedState) { 1553 if (DBG) { 1554 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1555 } 1556 return false; 1557 } 1558 1559 return true; 1560 } 1561 1562 long mLastScanPermissionUpdate = 0; 1563 boolean mConnectedModeGScanOffloadStarted = false; 1564 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1565 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1566 // we want to throttle the GScan Stop->Start transition 1567 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1568 void updateAssociatedScanPermission() { 1569 1570 if (useHalBasedAutoJoinOffload()) { 1571 boolean allowed = allowFullBandScanAndAssociated(); 1572 1573 long now = System.currentTimeMillis(); 1574 if (mConnectedModeGScanOffloadStarted && !allowed) { 1575 if (DBG) { 1576 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1577 } 1578 stopPnoOffload(); 1579 stopGScan(" useHalBasedAutoJoinOffload"); 1580 } 1581 if (!mConnectedModeGScanOffloadStarted && allowed) { 1582 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1583 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1584 // to look for 5GHz BSSIDs and better networks 1585 if (DBG) { 1586 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1587 } 1588 startGScanConnectedModeOffload("updatePermission " 1589 + (now - mLastScanPermissionUpdate) + "ms"); 1590 mLastScanPermissionUpdate = now; 1591 } 1592 } 1593 } 1594 } 1595 1596 private int mAggressiveHandover = 0; 1597 1598 int getAggressiveHandover() { 1599 return mAggressiveHandover; 1600 } 1601 1602 void enableAggressiveHandover(int enabled) { 1603 mAggressiveHandover = enabled; 1604 } 1605 1606 public void clearANQPCache() { 1607 mWifiConfigStore.trimANQPCache(true); 1608 } 1609 1610 public void setAllowScansWithTraffic(int enabled) { 1611 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1612 } 1613 1614 public int getAllowScansWithTraffic() { 1615 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1616 } 1617 1618 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1619 boolean old_state = getEnableAutoJoinWhenAssociated(); 1620 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1621 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1622 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1623 null); 1624 } 1625 return true; 1626 } 1627 1628 public boolean getEnableAutoJoinWhenAssociated() { 1629 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1630 } 1631 /* 1632 * 1633 * Framework scan control 1634 */ 1635 1636 private boolean mAlarmEnabled = false; 1637 1638 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1639 1640 private void setScanAlarm(boolean enabled) { 1641 if (PDBG) { 1642 String state; 1643 if (enabled) state = "enabled"; else state = "disabled"; 1644 logd("setScanAlarm " + state 1645 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1646 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1647 } 1648 if (mBackgroundScanSupported == false) { 1649 // Scan alarm is only used for background scans if they are not 1650 // offloaded to the wifi chipset, hence enable the scan alarm 1651 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1652 enabled = true; 1653 } 1654 1655 if (enabled == mAlarmEnabled) return; 1656 if (enabled) { 1657 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1658 /* going to wake up the host processor to look for access points */ 1659 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1660 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1661 mScanIntent); 1662 mAlarmEnabled = true; 1663 } else { 1664 mAlarmManager.cancel(mScanIntent); 1665 mAlarmEnabled = false; 1666 } 1667 } 1668 1669 private void cancelDelayedScan() { 1670 mDelayedScanCounter.incrementAndGet(); 1671 } 1672 1673 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1674 ScanSettings settings, WorkSource workSource) { 1675 1676 if (counter != mDelayedScanCounter.get()) { 1677 return false; 1678 } 1679 if (restart) 1680 startDelayedScan(milli, settings, workSource); 1681 return true; 1682 } 1683 1684 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1685 if (milli <= 0) return; 1686 /** 1687 * The cases where the scan alarm should be run are : 1688 * - DisconnectedState && screenOn => used delayed timer 1689 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1690 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1691 * - ConnectedState && screenOn => used delayed timer 1692 */ 1693 1694 mDelayedScanCounter.incrementAndGet(); 1695 if (mScreenOn && 1696 (getCurrentState() == mDisconnectedState 1697 || getCurrentState() == mConnectedState)) { 1698 Bundle bundle = new Bundle(); 1699 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1700 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1701 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1702 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1703 mDelayedScanCounter.get(), bundle, milli); 1704 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1705 } else if (mBackgroundScanSupported == false 1706 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1707 setScanAlarm(true); 1708 if (DBG) logd("startDelayedScan start scan alarm -> " 1709 + mDelayedScanCounter + " milli " + milli); 1710 } else { 1711 if (DBG) logd("startDelayedScan unhandled -> " 1712 + mDelayedScanCounter + " milli " + milli); 1713 } 1714 } 1715 1716 private boolean setRandomMacOui() { 1717 String oui = mContext.getResources().getString(R.string.config_wifi_random_mac_oui); 1718 if (TextUtils.isEmpty(oui)) { 1719 oui = GOOGLE_OUI; 1720 } 1721 String[] ouiParts = oui.split("-"); 1722 byte[] ouiBytes = new byte[3]; 1723 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1724 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1725 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1726 1727 logd("Setting OUI to " + oui); 1728 return mWifiNative.setScanningMacOui(ouiBytes); 1729 } 1730 1731 /** 1732 * ****************************************************** 1733 * Methods exposed for public use 1734 * ****************************************************** 1735 */ 1736 1737 public Messenger getMessenger() { 1738 return new Messenger(getHandler()); 1739 } 1740 1741 /** 1742 * TODO: doc 1743 */ 1744 public boolean syncPingSupplicant(AsyncChannel channel) { 1745 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1746 boolean result = (resultMsg.arg1 != FAILURE); 1747 resultMsg.recycle(); 1748 return result; 1749 } 1750 1751 /** 1752 * When settings allowing making use of untrusted networks change, trigger a scan 1753 * so as to kick of autojoin. 1754 */ 1755 public void startScanForUntrustedSettingChange() { 1756 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1757 } 1758 1759 /** 1760 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1761 * given to callingUid. 1762 * 1763 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1764 * workSource is specified. 1765 * @param workSource If not null, blame is given to workSource. 1766 * @param settings Scan settings, see {@link ScanSettings}. 1767 */ 1768 public void startScan(int callingUid, int scanCounter, 1769 ScanSettings settings, WorkSource workSource) { 1770 Bundle bundle = new Bundle(); 1771 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1772 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1773 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1774 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1775 } 1776 1777 // called from BroadcastListener 1778 1779 /** 1780 * Start reading new scan data 1781 * Data comes in as: 1782 * "scancount=5\n" 1783 * "nextcount=5\n" 1784 * "apcount=3\n" 1785 * "trunc\n" (optional) 1786 * "bssid=...\n" 1787 * "ssid=...\n" 1788 * "freq=...\n" (in Mhz) 1789 * "level=...\n" 1790 * "dist=...\n" (in cm) 1791 * "distsd=...\n" (standard deviation, in cm) 1792 * "====" 1793 * "bssid=...\n" 1794 * etc 1795 * "====" 1796 * "bssid=...\n" 1797 * etc 1798 * "%%%%" 1799 * "apcount=2\n" 1800 * "bssid=...\n" 1801 * etc 1802 * "%%%% 1803 * etc 1804 * "----" 1805 */ 1806 private final static boolean DEBUG_PARSE = false; 1807 1808 private long mDisconnectedTimeStamp = 0; 1809 1810 public long getDisconnectedTimeMilli() { 1811 if (getCurrentState() == mDisconnectedState 1812 && mDisconnectedTimeStamp != 0) { 1813 long now_ms = System.currentTimeMillis(); 1814 return now_ms - mDisconnectedTimeStamp; 1815 } 1816 return 0; 1817 } 1818 1819 // Keeping track of scan requests 1820 private long lastStartScanTimeStamp = 0; 1821 private long lastScanDuration = 0; 1822 // Last connect attempt is used to prevent scan requests: 1823 // - for a period of 10 seconds after attempting to connect 1824 private long lastConnectAttemptTimestamp = 0; 1825 private Set<Integer> lastScanFreqs = null; 1826 1827 // For debugging, keep track of last message status handling 1828 // TODO, find an equivalent mechanism as part of parent class 1829 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1830 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1831 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1832 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1833 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1834 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1835 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1836 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1837 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1838 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1839 1840 private int messageHandlingStatus = 0; 1841 1842 //TODO: this is used only to track connection attempts, however the link state and packet per 1843 //TODO: second logic should be folded into that 1844 private boolean checkOrDeferScanAllowed(Message msg) { 1845 long now = System.currentTimeMillis(); 1846 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1847 Message dmsg = Message.obtain(msg); 1848 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1849 return false; 1850 } 1851 return true; 1852 } 1853 1854 private int mOnTime = 0; 1855 private int mTxTime = 0; 1856 private int mRxTime = 0; 1857 private int mOnTimeStartScan = 0; 1858 private int mTxTimeStartScan = 0; 1859 private int mRxTimeStartScan = 0; 1860 private int mOnTimeScan = 0; 1861 private int mTxTimeScan = 0; 1862 private int mRxTimeScan = 0; 1863 private int mOnTimeThisScan = 0; 1864 private int mTxTimeThisScan = 0; 1865 private int mRxTimeThisScan = 0; 1866 1867 private int mOnTimeScreenStateChange = 0; 1868 private int mOnTimeAtLastReport = 0; 1869 private long lastOntimeReportTimeStamp = 0; 1870 private long lastScreenStateChangeTimeStamp = 0; 1871 private int mOnTimeLastReport = 0; 1872 private int mTxTimeLastReport = 0; 1873 private int mRxTimeLastReport = 0; 1874 1875 private long lastLinkLayerStatsUpdate = 0; 1876 1877 String reportOnTime() { 1878 long now = System.currentTimeMillis(); 1879 StringBuilder sb = new StringBuilder(); 1880 // Report stats since last report 1881 int on = mOnTime - mOnTimeLastReport; 1882 mOnTimeLastReport = mOnTime; 1883 int tx = mTxTime - mTxTimeLastReport; 1884 mTxTimeLastReport = mTxTime; 1885 int rx = mRxTime - mRxTimeLastReport; 1886 mRxTimeLastReport = mRxTime; 1887 int period = (int) (now - lastOntimeReportTimeStamp); 1888 lastOntimeReportTimeStamp = now; 1889 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1890 // Report stats since Screen State Changed 1891 on = mOnTime - mOnTimeScreenStateChange; 1892 period = (int) (now - lastScreenStateChangeTimeStamp); 1893 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1894 return sb.toString(); 1895 } 1896 1897 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1898 WifiLinkLayerStats stats = null; 1899 if (mWifiLinkLayerStatsSupported > 0) { 1900 String name = "wlan0"; 1901 stats = mWifiNative.getWifiLinkLayerStats(name); 1902 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1903 mWifiLinkLayerStatsSupported -= 1; 1904 } else if (stats != null) { 1905 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1906 mOnTime = stats.on_time; 1907 mTxTime = stats.tx_time; 1908 mRxTime = stats.rx_time; 1909 mRunningBeaconCount = stats.beacon_rx; 1910 } 1911 } 1912 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1913 long mTxPkts = mFacade.getTxPackets(mInterfaceName); 1914 long mRxPkts = mFacade.getRxPackets(mInterfaceName); 1915 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1916 } else { 1917 mWifiInfo.updatePacketRates(stats); 1918 } 1919 if (useHalBasedAutoJoinOffload()) { 1920 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1921 } 1922 return stats; 1923 } 1924 1925 void startRadioScanStats() { 1926 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1927 if (stats != null) { 1928 mOnTimeStartScan = stats.on_time; 1929 mTxTimeStartScan = stats.tx_time; 1930 mRxTimeStartScan = stats.rx_time; 1931 mOnTime = stats.on_time; 1932 mTxTime = stats.tx_time; 1933 mRxTime = stats.rx_time; 1934 } 1935 } 1936 1937 void closeRadioScanStats() { 1938 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1939 if (stats != null) { 1940 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1941 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1942 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1943 mOnTimeScan += mOnTimeThisScan; 1944 mTxTimeScan += mTxTimeThisScan; 1945 mRxTimeScan += mRxTimeThisScan; 1946 } 1947 } 1948 1949 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1950 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1951 if (ret != 0) { 1952 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1953 "): hardware error " + ret); 1954 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1955 } else { 1956 return ConnectivityManager.PacketKeepalive.SUCCESS; 1957 } 1958 } 1959 1960 int stopWifiIPPacketOffload(int slot) { 1961 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1962 if (ret != 0) { 1963 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1964 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1965 } else { 1966 return ConnectivityManager.PacketKeepalive.SUCCESS; 1967 } 1968 } 1969 1970 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1971 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1972 } 1973 1974 int stopRssiMonitoringOffload() { 1975 return mWifiNative.stopRssiMonitoring(); 1976 } 1977 1978 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1979 private void noteScanStart(int callingUid, WorkSource workSource) { 1980 if (lastStartScanTimeStamp != 0) { 1981 noteScanEnd(); 1982 } 1983 long now = System.currentTimeMillis(); 1984 lastStartScanTimeStamp = now; 1985 lastScanDuration = 0; 1986 if (DBG) { 1987 String ts = String.format("[%,d ms]", now); 1988 if (workSource != null) { 1989 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1990 + " uid " + Integer.toString(callingUid)); 1991 } else { 1992 if (DBG) logd(ts + " noteScanstart no scan source" 1993 + " uid " + Integer.toString(callingUid)); 1994 } 1995 } 1996 startRadioScanStats(); 1997 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1998 && callingUid != SCAN_ALARM_SOURCE) 1999 || workSource != null)) { 2000 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 2001 2002 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 2003 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 2004 mScanWorkSource = new WorkSource(Process.WIFI_UID); 2005 } 2006 2007 try { 2008 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 2009 } catch (RemoteException e) { 2010 log(e.toString()); 2011 } 2012 } 2013 } 2014 2015 private void noteScanEnd() { 2016 closeRadioScanStats(); 2017 long now = System.currentTimeMillis(); 2018 if (lastStartScanTimeStamp != 0) { 2019 lastScanDuration = now - lastStartScanTimeStamp; 2020 } 2021 lastStartScanTimeStamp = 0; 2022 if (DBG) { 2023 String ts = String.format("[%,d ms]", now); 2024 if (mScanWorkSource != null) 2025 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 2026 + " onTime=" + mOnTimeThisScan); 2027 else 2028 logd(ts + " noteScanEnd no scan source" 2029 + " onTime=" + mOnTimeThisScan); 2030 } 2031 if (mScanWorkSource != null) { 2032 try { 2033 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 2034 } catch (RemoteException e) { 2035 log(e.toString()); 2036 } finally { 2037 mScanWorkSource = null; 2038 } 2039 } 2040 } 2041 2042 private void handleScanRequest(Message message) { 2043 ScanSettings settings = null; 2044 WorkSource workSource = null; 2045 2046 // unbundle parameters 2047 Bundle bundle = (Bundle) message.obj; 2048 2049 if (bundle != null) { 2050 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 2051 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 2052 } 2053 2054 Set<Integer> freqs = null; 2055 if (settings != null && settings.channelSet != null) { 2056 freqs = new HashSet<Integer>(); 2057 for (WifiChannel channel : settings.channelSet) { 2058 freqs.add(channel.freqMHz); 2059 } 2060 } 2061 2062 // call wifi native to start the scan 2063 if (startScanNative(freqs)) { 2064 // only count battery consumption if scan request is accepted 2065 noteScanStart(message.arg1, workSource); 2066 // a full scan covers everything, clearing scan request buffer 2067 if (freqs == null) 2068 mBufferedScanMsg.clear(); 2069 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 2070 if (workSource != null) { 2071 // External worksource was passed along the scan request, 2072 // hence always send a broadcast 2073 mSendScanResultsBroadcast = true; 2074 } 2075 return; 2076 } 2077 2078 // if reach here, scan request is rejected 2079 2080 if (!mIsScanOngoing) { 2081 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2082 2083 // discard this request and pop up the next one 2084 if (mBufferedScanMsg.size() > 0) { 2085 sendMessage(mBufferedScanMsg.remove()); 2086 } 2087 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2088 } else if (!mIsFullScanOngoing) { 2089 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2090 // buffer the scan request to make sure specified channels will be scanned eventually 2091 if (freqs == null) 2092 mBufferedScanMsg.clear(); 2093 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2094 Message msg = obtainMessage(CMD_START_SCAN, 2095 message.arg1, message.arg2, bundle); 2096 mBufferedScanMsg.add(msg); 2097 } else { 2098 // if too many requests in buffer, combine them into a single full scan 2099 bundle = new Bundle(); 2100 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2101 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2102 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2103 mBufferedScanMsg.clear(); 2104 mBufferedScanMsg.add(msg); 2105 } 2106 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2107 } else { 2108 // mIsScanOngoing and mIsFullScanOngoing 2109 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2110 } 2111 } 2112 2113 2114 /** 2115 * return true iff scan request is accepted 2116 */ 2117 private boolean startScanNative(Set<Integer> freqs) { 2118 if (mWifiNative.scan(freqs)) { 2119 mIsScanOngoing = true; 2120 mIsFullScanOngoing = (freqs == null); 2121 lastScanFreqs = freqs; 2122 return true; 2123 } 2124 return false; 2125 } 2126 2127 /** 2128 * TODO: doc 2129 */ 2130 public void setSupplicantRunning(boolean enable) { 2131 if (enable) { 2132 sendMessage(CMD_START_SUPPLICANT); 2133 } else { 2134 sendMessage(CMD_STOP_SUPPLICANT); 2135 } 2136 } 2137 2138 /** 2139 * TODO: doc 2140 */ 2141 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2142 if (enable) { 2143 sendMessage(CMD_START_AP, wifiConfig); 2144 } else { 2145 sendMessage(CMD_STOP_AP); 2146 } 2147 } 2148 2149 public void setWifiApConfiguration(WifiConfiguration config) { 2150 mWifiApConfigStore.setApConfiguration(config); 2151 } 2152 2153 public WifiConfiguration syncGetWifiApConfiguration() { 2154 return mWifiApConfigStore.getApConfiguration(); 2155 } 2156 2157 /** 2158 * TODO: doc 2159 */ 2160 public int syncGetWifiState() { 2161 return mWifiState.get(); 2162 } 2163 2164 /** 2165 * TODO: doc 2166 */ 2167 public String syncGetWifiStateByName() { 2168 switch (mWifiState.get()) { 2169 case WIFI_STATE_DISABLING: 2170 return "disabling"; 2171 case WIFI_STATE_DISABLED: 2172 return "disabled"; 2173 case WIFI_STATE_ENABLING: 2174 return "enabling"; 2175 case WIFI_STATE_ENABLED: 2176 return "enabled"; 2177 case WIFI_STATE_UNKNOWN: 2178 return "unknown state"; 2179 default: 2180 return "[invalid state]"; 2181 } 2182 } 2183 2184 /** 2185 * TODO: doc 2186 */ 2187 public int syncGetWifiApState() { 2188 return mWifiApState.get(); 2189 } 2190 2191 /** 2192 * TODO: doc 2193 */ 2194 public String syncGetWifiApStateByName() { 2195 switch (mWifiApState.get()) { 2196 case WIFI_AP_STATE_DISABLING: 2197 return "disabling"; 2198 case WIFI_AP_STATE_DISABLED: 2199 return "disabled"; 2200 case WIFI_AP_STATE_ENABLING: 2201 return "enabling"; 2202 case WIFI_AP_STATE_ENABLED: 2203 return "enabled"; 2204 case WIFI_AP_STATE_FAILED: 2205 return "failed"; 2206 default: 2207 return "[invalid state]"; 2208 } 2209 } 2210 2211 public boolean isConnected() { 2212 return getCurrentState() == mConnectedState; 2213 } 2214 2215 public boolean isDisconnected() { 2216 return getCurrentState() == mDisconnectedState; 2217 } 2218 2219 public boolean isSupplicantTransientState() { 2220 SupplicantState SupplicantState = mWifiInfo.getSupplicantState(); 2221 if (SupplicantState == SupplicantState.ASSOCIATING 2222 || SupplicantState == SupplicantState.AUTHENTICATING 2223 || SupplicantState == SupplicantState.FOUR_WAY_HANDSHAKE 2224 || SupplicantState == SupplicantState.GROUP_HANDSHAKE) { 2225 2226 if (DBG) { 2227 Log.d(TAG, "Supplicant is under transient state: " + SupplicantState); 2228 } 2229 return true; 2230 } else { 2231 if (DBG) { 2232 Log.d(TAG, "Supplicant is under steady state: " + SupplicantState); 2233 } 2234 } 2235 2236 return false; 2237 } 2238 2239 /** 2240 * Get status information for the current connection, if any. 2241 * 2242 * @return a {@link WifiInfo} object containing information about the current connection 2243 */ 2244 public WifiInfo syncRequestConnectionInfo() { 2245 return getWiFiInfoForUid(Binder.getCallingUid()); 2246 } 2247 2248 public WifiInfo getWifiInfo() { 2249 return mWifiInfo; 2250 } 2251 2252 public DhcpResults syncGetDhcpResults() { 2253 synchronized (mDhcpResultsLock) { 2254 return new DhcpResults(mDhcpResults); 2255 } 2256 } 2257 2258 /** 2259 * TODO: doc 2260 */ 2261 public void setDriverStart(boolean enable) { 2262 if (enable) { 2263 sendMessage(CMD_START_DRIVER); 2264 } else { 2265 sendMessage(CMD_STOP_DRIVER); 2266 } 2267 } 2268 2269 /** 2270 * TODO: doc 2271 */ 2272 public void setOperationalMode(int mode) { 2273 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2274 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2275 } 2276 2277 /** 2278 * TODO: doc 2279 */ 2280 public List<ScanResult> syncGetScanResultsList() { 2281 synchronized (mScanResultCache) { 2282 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2283 for (ScanDetail result : mScanResults) { 2284 scanList.add(new ScanResult(result.getScanResult())); 2285 } 2286 return scanList; 2287 } 2288 } 2289 2290 public int syncAddPasspointManagementObject(AsyncChannel channel, String managementObject) { 2291 Message resultMsg = 2292 channel.sendMessageSynchronously(CMD_ADD_PASSPOINT_MO, managementObject); 2293 int result = resultMsg.arg1; 2294 resultMsg.recycle(); 2295 return result; 2296 } 2297 2298 public int syncModifyPasspointManagementObject(AsyncChannel channel, String fqdn, 2299 List<PasspointManagementObjectDefinition> 2300 managementObjectDefinitions) { 2301 Bundle bundle = new Bundle(); 2302 bundle.putString("FQDN", fqdn); 2303 bundle.putParcelableList("MOS", managementObjectDefinitions); 2304 Message resultMsg = channel.sendMessageSynchronously(CMD_MODIFY_PASSPOINT_MO, bundle); 2305 int result = resultMsg.arg1; 2306 resultMsg.recycle(); 2307 return result; 2308 } 2309 2310 public boolean syncQueryPasspointIcon(AsyncChannel channel, long bssid, String fileName) { 2311 Bundle bundle = new Bundle(); 2312 bundle.putLong("BSSID", bssid); 2313 bundle.putString("FILENAME", fileName); 2314 Message resultMsg = channel.sendMessageSynchronously(CMD_QUERY_OSU_ICON, bundle); 2315 int result = resultMsg.arg1; 2316 resultMsg.recycle(); 2317 return result == 1; 2318 } 2319 2320 public int matchProviderWithCurrentNetwork(AsyncChannel channel, String fqdn) { 2321 Message resultMsg = channel.sendMessageSynchronously(CMD_MATCH_PROVIDER_NETWORK, fqdn); 2322 int result = resultMsg.arg1; 2323 resultMsg.recycle(); 2324 return result; 2325 } 2326 2327 /** 2328 * Deauthenticate and set the re-authentication hold off time for the current network 2329 * @param holdoff hold off time in milliseconds 2330 * @param ess set if the hold off pertains to an ESS rather than a BSS 2331 */ 2332 public void deauthenticateNetwork(AsyncChannel channel, long holdoff, boolean ess) { 2333 // TODO: This needs an implementation 2334 } 2335 2336 public void disableEphemeralNetwork(String SSID) { 2337 if (SSID != null) { 2338 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2339 } 2340 } 2341 2342 /** 2343 * Get unsynchronized pointer to scan result list 2344 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2345 */ 2346 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2347 return mScanResults; 2348 } 2349 2350 /** 2351 * Disconnect from Access Point 2352 */ 2353 public void disconnectCommand() { 2354 sendMessage(CMD_DISCONNECT); 2355 } 2356 2357 public void disconnectCommand(int uid, int reason) { 2358 sendMessage(CMD_DISCONNECT, uid, reason); 2359 } 2360 2361 /** 2362 * Initiate a reconnection to AP 2363 */ 2364 public void reconnectCommand() { 2365 sendMessage(CMD_RECONNECT); 2366 } 2367 2368 /** 2369 * Initiate a re-association to AP 2370 */ 2371 public void reassociateCommand() { 2372 sendMessage(CMD_REASSOCIATE); 2373 } 2374 2375 /** 2376 * Reload networks and then reconnect; helps load correct data for TLS networks 2377 */ 2378 2379 public void reloadTlsNetworksAndReconnect() { 2380 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2381 } 2382 2383 /** 2384 * Add a network synchronously 2385 * 2386 * @return network id of the new network 2387 */ 2388 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2389 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2390 int result = resultMsg.arg1; 2391 resultMsg.recycle(); 2392 return result; 2393 } 2394 2395 /** 2396 * Get configured networks synchronously 2397 * 2398 * @param channel 2399 * @return 2400 */ 2401 2402 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2403 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2404 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2405 resultMsg.recycle(); 2406 return result; 2407 } 2408 2409 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2410 Message resultMsg = channel.sendMessageSynchronously( 2411 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2412 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2413 resultMsg.recycle(); 2414 return result; 2415 } 2416 2417 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2418 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2419 return (WifiConfiguration) resultMsg.obj; 2420 } 2421 2422 /** 2423 * Get connection statistics synchronously 2424 * 2425 * @param channel 2426 * @return 2427 */ 2428 2429 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2430 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2431 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2432 resultMsg.recycle(); 2433 return result; 2434 } 2435 2436 /** 2437 * Get adaptors synchronously 2438 */ 2439 2440 public int syncGetSupportedFeatures(AsyncChannel channel) { 2441 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2442 int supportedFeatureSet = resultMsg.arg1; 2443 resultMsg.recycle(); 2444 return supportedFeatureSet; 2445 } 2446 2447 /** 2448 * Get link layers stats for adapter synchronously 2449 */ 2450 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2451 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2452 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2453 resultMsg.recycle(); 2454 return result; 2455 } 2456 2457 /** 2458 * Delete a network 2459 * 2460 * @param networkId id of the network to be removed 2461 */ 2462 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2463 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2464 boolean result = (resultMsg.arg1 != FAILURE); 2465 resultMsg.recycle(); 2466 return result; 2467 } 2468 2469 /** 2470 * Enable a network 2471 * 2472 * @param netId network id of the network 2473 * @param disableOthers true, if all other networks have to be disabled 2474 * @return {@code true} if the operation succeeds, {@code false} otherwise 2475 */ 2476 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2477 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2478 disableOthers ? 1 : 0); 2479 boolean result = (resultMsg.arg1 != FAILURE); 2480 resultMsg.recycle(); 2481 return result; 2482 } 2483 2484 /** 2485 * Disable a network 2486 * 2487 * @param netId network id of the network 2488 * @return {@code true} if the operation succeeds, {@code false} otherwise 2489 */ 2490 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2491 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2492 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2493 resultMsg.recycle(); 2494 return result; 2495 } 2496 2497 /** 2498 * Retrieves a WPS-NFC configuration token for the specified network 2499 * 2500 * @return a hex string representation of the WPS-NFC configuration token 2501 */ 2502 public String syncGetWpsNfcConfigurationToken(int netId) { 2503 return mWifiNative.getNfcWpsConfigurationToken(netId); 2504 } 2505 2506 void enableBackgroundScan(boolean enable) { 2507 if (enable) { 2508 mWifiConfigStore.enableAllNetworks(); 2509 } 2510 boolean ret = mWifiNative.enableBackgroundScan(enable); 2511 if (ret) { 2512 mLegacyPnoEnabled = enable; 2513 } else { 2514 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2515 } 2516 } 2517 2518 /** 2519 * Blacklist a BSSID. This will avoid the AP if there are 2520 * alternate APs to connect 2521 * 2522 * @param bssid BSSID of the network 2523 */ 2524 public void addToBlacklist(String bssid) { 2525 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2526 } 2527 2528 /** 2529 * Clear the blacklist list 2530 */ 2531 public void clearBlacklist() { 2532 sendMessage(CMD_CLEAR_BLACKLIST); 2533 } 2534 2535 public void enableRssiPolling(boolean enabled) { 2536 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2537 } 2538 2539 public void enableAllNetworks() { 2540 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2541 } 2542 2543 /** 2544 * Start filtering Multicast v4 packets 2545 */ 2546 public void startFilteringMulticastV4Packets() { 2547 mFilteringMulticastV4Packets.set(true); 2548 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2549 } 2550 2551 /** 2552 * Stop filtering Multicast v4 packets 2553 */ 2554 public void stopFilteringMulticastV4Packets() { 2555 mFilteringMulticastV4Packets.set(false); 2556 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2557 } 2558 2559 /** 2560 * Start filtering Multicast v4 packets 2561 */ 2562 public void startFilteringMulticastV6Packets() { 2563 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2564 } 2565 2566 /** 2567 * Stop filtering Multicast v4 packets 2568 */ 2569 public void stopFilteringMulticastV6Packets() { 2570 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2571 } 2572 2573 /** 2574 * Set high performance mode of operation. 2575 * Enabling would set active power mode and disable suspend optimizations; 2576 * disabling would set auto power mode and enable suspend optimizations 2577 * 2578 * @param enable true if enable, false otherwise 2579 */ 2580 public void setHighPerfModeEnabled(boolean enable) { 2581 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2582 } 2583 2584 /** 2585 * Set the country code 2586 * 2587 * @param countryCode following ISO 3166 format 2588 * @param persist {@code true} if the setting should be remembered. 2589 */ 2590 public synchronized void setCountryCode(String countryCode, boolean persist) { 2591 // If it's a good country code, apply after the current 2592 // wifi connection is terminated; ignore resetting of code 2593 // for now (it is unclear what the chipset should do when 2594 // country code is reset) 2595 2596 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2597 // else only when the new country code is different from the current one to set 2598 2599 if (TextUtils.isEmpty(countryCode)) { 2600 if (DBG) log("Ignoring resetting of country code"); 2601 } else { 2602 int countryCodeSequence = mCountryCodeSequence.get(); 2603 String currentCountryCode = getCurrentCountryCode(); 2604 if (countryCodeSequence == 0 2605 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2606 2607 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2608 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2609 countryCode); 2610 } 2611 } 2612 } 2613 2614 /** 2615 * reset the country code to default 2616 */ 2617 public synchronized void resetCountryCode() { 2618 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2619 logd("resetting country code to " + mDefaultCountryCode); 2620 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2621 } 2622 } 2623 2624 /** 2625 * reset cached SIM credential data 2626 */ 2627 public synchronized void resetSimAuthNetworks() { 2628 sendMessage(CMD_RESET_SIM_NETWORKS); 2629 } 2630 2631 2632 /** 2633 * Get Network object of current wifi network 2634 * @return Network object of current wifi network 2635 */ 2636 public Network getCurrentNetwork() { 2637 if (mNetworkAgent != null) { 2638 return new Network(mNetworkAgent.netId); 2639 } else { 2640 return null; 2641 } 2642 } 2643 2644 /** 2645 * Get the country code 2646 * 2647 * @return countryCode following ISO 3166 format 2648 */ 2649 public String getCurrentCountryCode() { 2650 return mFacade.getStringSetting(mContext, Settings.Global.WIFI_COUNTRY_CODE); 2651 } 2652 2653 /** 2654 * Set the operational frequency band 2655 * 2656 * @param band 2657 * @param persist {@code true} if the setting should be remembered. 2658 */ 2659 public void setFrequencyBand(int band, boolean persist) { 2660 if (persist) { 2661 Settings.Global.putInt(mContext.getContentResolver(), 2662 Settings.Global.WIFI_FREQUENCY_BAND, 2663 band); 2664 } 2665 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2666 } 2667 2668 /** 2669 * Enable TDLS for a specific MAC address 2670 */ 2671 public void enableTdls(String remoteMacAddress, boolean enable) { 2672 int enabler = enable ? 1 : 0; 2673 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2674 } 2675 2676 /** 2677 * Returns the operational frequency band 2678 */ 2679 public int getFrequencyBand() { 2680 return mFrequencyBand.get(); 2681 } 2682 2683 /** 2684 * Returns the wifi configuration file 2685 */ 2686 public String getConfigFile() { 2687 return mWifiConfigStore.getConfigFile(); 2688 } 2689 2690 /** 2691 * Send a message indicating bluetooth adapter connection state changed 2692 */ 2693 public void sendBluetoothAdapterStateChange(int state) { 2694 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2695 } 2696 2697 /** 2698 * Send a message indicating a package has been uninstalled. 2699 */ 2700 public void removeAppConfigs(String packageName, int uid) { 2701 // Build partial AppInfo manually - package may not exist in database any more 2702 ApplicationInfo ai = new ApplicationInfo(); 2703 ai.packageName = packageName; 2704 ai.uid = uid; 2705 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2706 } 2707 2708 /** 2709 * Send a message indicating a user has been removed. 2710 */ 2711 public void removeUserConfigs(int userId) { 2712 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2713 } 2714 2715 /** 2716 * Save configuration on supplicant 2717 * 2718 * @return {@code true} if the operation succeeds, {@code false} otherwise 2719 * <p/> 2720 * TODO: deprecate this 2721 */ 2722 public boolean syncSaveConfig(AsyncChannel channel) { 2723 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2724 boolean result = (resultMsg.arg1 != FAILURE); 2725 resultMsg.recycle(); 2726 return result; 2727 } 2728 2729 public void updateBatteryWorkSource(WorkSource newSource) { 2730 synchronized (mRunningWifiUids) { 2731 try { 2732 if (newSource != null) { 2733 mRunningWifiUids.set(newSource); 2734 } 2735 if (mIsRunning) { 2736 if (mReportedRunning) { 2737 // If the work source has changed since last time, need 2738 // to remove old work from battery stats. 2739 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2740 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2741 mRunningWifiUids); 2742 mLastRunningWifiUids.set(mRunningWifiUids); 2743 } 2744 } else { 2745 // Now being started, report it. 2746 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2747 mLastRunningWifiUids.set(mRunningWifiUids); 2748 mReportedRunning = true; 2749 } 2750 } else { 2751 if (mReportedRunning) { 2752 // Last reported we were running, time to stop. 2753 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2754 mLastRunningWifiUids.clear(); 2755 mReportedRunning = false; 2756 } 2757 } 2758 mWakeLock.setWorkSource(newSource); 2759 } catch (RemoteException ignore) { 2760 } 2761 } 2762 } 2763 2764 @Override 2765 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2766 super.dump(fd, pw, args); 2767 mSupplicantStateTracker.dump(fd, pw, args); 2768 pw.println("mLinkProperties " + mLinkProperties); 2769 pw.println("mWifiInfo " + mWifiInfo); 2770 pw.println("mDhcpResults " + mDhcpResults); 2771 pw.println("mNetworkInfo " + mNetworkInfo); 2772 pw.println("mLastSignalLevel " + mLastSignalLevel); 2773 pw.println("mLastBssid " + mLastBssid); 2774 pw.println("mLastNetworkId " + mLastNetworkId); 2775 pw.println("mOperationalMode " + mOperationalMode); 2776 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2777 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2778 pw.println("Supplicant status " + mWifiNative.status(true)); 2779 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2780 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2781 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2782 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2783 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2784 pw.println("SSID whitelist :" ); 2785 for (int i=0; i < mWhiteListedSsids.length; i++) { 2786 pw.println(" " + mWhiteListedSsids[i]); 2787 } 2788 } 2789 if (mNetworkFactory != null) { 2790 mNetworkFactory.dump(fd, pw, args); 2791 } else { 2792 pw.println("mNetworkFactory is not initialized"); 2793 } 2794 2795 if (mUntrustedNetworkFactory != null) { 2796 mUntrustedNetworkFactory.dump(fd, pw, args); 2797 } else { 2798 pw.println("mUntrustedNetworkFactory is not initialized"); 2799 } 2800 pw.println(); 2801 updateWifiMetrics(); 2802 mWifiMetrics.dump(fd, pw, args); 2803 pw.println(); 2804 mNetworkFactory.dump(fd, pw, args); 2805 mUntrustedNetworkFactory.dump(fd, pw, args); 2806 pw.println(); 2807 2808 mWifiConfigStore.dump(fd, pw, args); 2809 pw.println(); 2810 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2811 mWifiLogger.dump(fd, pw, args); 2812 mWifiQualifiedNetworkSelector.dump(fd, pw, args); 2813 } 2814 2815 public void handleUserSwitch(int userId) { 2816 sendMessage(CMD_USER_SWITCH, userId); 2817 } 2818 2819 /** 2820 * ****************************************************** 2821 * Internal private functions 2822 * ****************************************************** 2823 */ 2824 2825 private void logStateAndMessage(Message message, State state) { 2826 messageHandlingStatus = 0; 2827 if (mLogMessages) { 2828 logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); 2829 } 2830 } 2831 2832 /** 2833 * helper, prints the milli time since boot wi and w/o suspended time 2834 */ 2835 String printTime() { 2836 StringBuilder sb = new StringBuilder(); 2837 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2838 sb.append("/").append(SystemClock.elapsedRealtime()); 2839 return sb.toString(); 2840 } 2841 2842 /** 2843 * Return the additional string to be logged by LogRec, default 2844 * 2845 * @param msg that was processed 2846 * @return information to be logged as a String 2847 */ 2848 protected String getLogRecString(Message msg) { 2849 WifiConfiguration config; 2850 Long now; 2851 String report; 2852 String key; 2853 StringBuilder sb = new StringBuilder(); 2854 if (mScreenOn) { 2855 sb.append("!"); 2856 } 2857 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2858 sb.append("(").append(messageHandlingStatus).append(")"); 2859 } 2860 sb.append(smToString(msg)); 2861 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2862 sb.append(" uid=" + msg.sendingUid); 2863 } 2864 sb.append(" ").append(printTime()); 2865 switch (msg.what) { 2866 case CMD_STARTED_GSCAN_DBG: 2867 case CMD_STARTED_PNO_DBG: 2868 sb.append(" "); 2869 sb.append(Integer.toString(msg.arg1)); 2870 sb.append(" "); 2871 sb.append(Integer.toString(msg.arg2)); 2872 if (msg.obj != null) { 2873 sb.append(" " + (String)msg.obj); 2874 } 2875 break; 2876 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2877 sb.append(" "); 2878 sb.append(Integer.toString(msg.arg1)); 2879 sb.append(" "); 2880 sb.append(Integer.toString(msg.arg2)); 2881 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2882 if (msg.obj != null) { 2883 sb.append(" " + (String)msg.obj); 2884 } 2885 break; 2886 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2887 sb.append(" "); 2888 sb.append(Integer.toString(msg.arg1)); 2889 sb.append(" "); 2890 sb.append(Integer.toString(msg.arg2)); 2891 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2892 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2893 sb.append(" autojoinAllowed="); 2894 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2895 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2896 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2897 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2898 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2899 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2900 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2901 break; 2902 case CMD_PNO_NETWORK_FOUND: 2903 sb.append(" "); 2904 sb.append(Integer.toString(msg.arg1)); 2905 sb.append(" "); 2906 sb.append(Integer.toString(msg.arg2)); 2907 if (msg.obj != null) { 2908 ScanResult[] results = (ScanResult[])msg.obj; 2909 for (int i = 0; i < results.length; i++) { 2910 sb.append(" ").append(results[i].SSID).append(" "); 2911 sb.append(results[i].frequency); 2912 sb.append(" ").append(results[i].level); 2913 } 2914 } 2915 break; 2916 case CMD_START_SCAN: 2917 now = System.currentTimeMillis(); 2918 sb.append(" "); 2919 sb.append(Integer.toString(msg.arg1)); 2920 sb.append(" "); 2921 sb.append(Integer.toString(msg.arg2)); 2922 sb.append(" ic="); 2923 sb.append(Integer.toString(sScanAlarmIntentCount)); 2924 if (msg.obj != null) { 2925 Bundle bundle = (Bundle) msg.obj; 2926 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2927 if (request != 0) { 2928 sb.append(" proc(ms):").append(now - request); 2929 } 2930 } 2931 if (mIsScanOngoing) sb.append(" onGoing"); 2932 if (mIsFullScanOngoing) sb.append(" full"); 2933 if (lastStartScanTimeStamp != 0) { 2934 sb.append(" started:").append(lastStartScanTimeStamp); 2935 sb.append(",").append(now - lastStartScanTimeStamp); 2936 } 2937 if (lastScanDuration != 0) { 2938 sb.append(" dur:").append(lastScanDuration); 2939 } 2940 sb.append(" cnt=").append(mDelayedScanCounter); 2941 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2942 sb.append(" f=").append(mWifiInfo.getFrequency()); 2943 sb.append(" sc=").append(mWifiInfo.score); 2944 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2945 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2946 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2947 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2948 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2949 if (lastScanFreqs != null) { 2950 sb.append(" list="); 2951 for(int freq : lastScanFreqs) { 2952 sb.append(freq).append(","); 2953 } 2954 } else { 2955 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2956 } 2957 report = reportOnTime(); 2958 if (report != null) { 2959 sb.append(" ").append(report); 2960 } 2961 break; 2962 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2963 sb.append(" "); 2964 sb.append(Integer.toString(msg.arg1)); 2965 sb.append(" "); 2966 sb.append(Integer.toString(msg.arg2)); 2967 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2968 if (stateChangeResult != null) { 2969 sb.append(stateChangeResult.toString()); 2970 } 2971 break; 2972 case WifiManager.SAVE_NETWORK: 2973 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2974 sb.append(" "); 2975 sb.append(Integer.toString(msg.arg1)); 2976 sb.append(" "); 2977 sb.append(Integer.toString(msg.arg2)); 2978 if (lastSavedConfigurationAttempt != null) { 2979 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2980 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2981 if (lastSavedConfigurationAttempt.hiddenSSID) { 2982 sb.append(" hidden"); 2983 } 2984 if (lastSavedConfigurationAttempt.preSharedKey != null 2985 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2986 sb.append(" hasPSK"); 2987 } 2988 if (lastSavedConfigurationAttempt.ephemeral) { 2989 sb.append(" ephemeral"); 2990 } 2991 if (lastSavedConfigurationAttempt.selfAdded) { 2992 sb.append(" selfAdded"); 2993 } 2994 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2995 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2996 } 2997 break; 2998 case WifiManager.FORGET_NETWORK: 2999 sb.append(" "); 3000 sb.append(Integer.toString(msg.arg1)); 3001 sb.append(" "); 3002 sb.append(Integer.toString(msg.arg2)); 3003 if (lastForgetConfigurationAttempt != null) { 3004 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 3005 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 3006 if (lastForgetConfigurationAttempt.hiddenSSID) { 3007 sb.append(" hidden"); 3008 } 3009 if (lastForgetConfigurationAttempt.preSharedKey != null) { 3010 sb.append(" hasPSK"); 3011 } 3012 if (lastForgetConfigurationAttempt.ephemeral) { 3013 sb.append(" ephemeral"); 3014 } 3015 if (lastForgetConfigurationAttempt.selfAdded) { 3016 sb.append(" selfAdded"); 3017 } 3018 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 3019 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 3020 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3021 lastForgetConfigurationAttempt.getNetworkSelectionStatus(); 3022 sb.append(" ajst=").append( 3023 netWorkSelectionStatus.getNetworkStatusString()); 3024 } 3025 break; 3026 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 3027 sb.append(" "); 3028 sb.append(Integer.toString(msg.arg1)); 3029 sb.append(" "); 3030 sb.append(Integer.toString(msg.arg2)); 3031 String bssid = (String) msg.obj; 3032 if (bssid != null && bssid.length() > 0) { 3033 sb.append(" "); 3034 sb.append(bssid); 3035 } 3036 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 3037 break; 3038 case WifiMonitor.SCAN_RESULTS_EVENT: 3039 sb.append(" "); 3040 sb.append(Integer.toString(msg.arg1)); 3041 sb.append(" "); 3042 sb.append(Integer.toString(msg.arg2)); 3043 if (mScanResults != null) { 3044 sb.append(" found="); 3045 sb.append(mScanResults.size()); 3046 } 3047 sb.append(" known=").append(mNumScanResultsKnown); 3048 sb.append(" got=").append(mNumScanResultsReturned); 3049 if (lastScanDuration != 0) { 3050 sb.append(" dur:").append(lastScanDuration); 3051 } 3052 if (mOnTime != 0) { 3053 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 3054 sb.append(",").append(mOnTime); 3055 } 3056 if (mTxTime != 0) { 3057 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 3058 sb.append(",").append(mTxTime); 3059 } 3060 if (mRxTime != 0) { 3061 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 3062 sb.append(",").append(mRxTime); 3063 } 3064 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3065 sb.append(String.format(" con=%d", mConnectionRequests)); 3066 key = mWifiConfigStore.getLastSelectedConfiguration(); 3067 if (key != null) { 3068 sb.append(" last=").append(key); 3069 } 3070 break; 3071 case WifiMonitor.SCAN_FAILED_EVENT: 3072 break; 3073 case WifiMonitor.NETWORK_CONNECTION_EVENT: 3074 sb.append(" "); 3075 sb.append(Integer.toString(msg.arg1)); 3076 sb.append(" "); 3077 sb.append(Integer.toString(msg.arg2)); 3078 sb.append(" ").append(mLastBssid); 3079 sb.append(" nid=").append(mLastNetworkId); 3080 config = getCurrentWifiConfiguration(); 3081 if (config != null) { 3082 sb.append(" ").append(config.configKey()); 3083 } 3084 key = mWifiConfigStore.getLastSelectedConfiguration(); 3085 if (key != null) { 3086 sb.append(" last=").append(key); 3087 } 3088 break; 3089 case CMD_TARGET_BSSID: 3090 case CMD_ASSOCIATED_BSSID: 3091 sb.append(" "); 3092 sb.append(Integer.toString(msg.arg1)); 3093 sb.append(" "); 3094 sb.append(Integer.toString(msg.arg2)); 3095 if (msg.obj != null) { 3096 sb.append(" BSSID=").append((String) msg.obj); 3097 } 3098 if (mTargetRoamBSSID != null) { 3099 sb.append(" Target=").append(mTargetRoamBSSID); 3100 } 3101 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3102 break; 3103 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 3104 if (msg.obj != null) { 3105 sb.append(" ").append((String) msg.obj); 3106 } 3107 sb.append(" nid=").append(msg.arg1); 3108 sb.append(" reason=").append(msg.arg2); 3109 if (mLastBssid != null) { 3110 sb.append(" lastbssid=").append(mLastBssid); 3111 } 3112 if (mWifiInfo.getFrequency() != -1) { 3113 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3114 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3115 } 3116 if (linkDebouncing) { 3117 sb.append(" debounce"); 3118 } 3119 break; 3120 case WifiMonitor.SSID_TEMP_DISABLED: 3121 case WifiMonitor.SSID_REENABLED: 3122 sb.append(" nid=").append(msg.arg1); 3123 if (msg.obj != null) { 3124 sb.append(" ").append((String) msg.obj); 3125 } 3126 config = getCurrentWifiConfiguration(); 3127 if (config != null) { 3128 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3129 config.getNetworkSelectionStatus(); 3130 sb.append(" cur=").append(config.configKey()); 3131 sb.append(" ajst=").append(netWorkSelectionStatus.getNetworkStatusString()); 3132 if (config.selfAdded) { 3133 sb.append(" selfAdded"); 3134 } 3135 if (config.status != 0) { 3136 sb.append(" st=").append(config.status); 3137 sb.append(" rs=").append( 3138 netWorkSelectionStatus.getNetworkDisableReasonString()); 3139 } 3140 if (config.lastConnected != 0) { 3141 now = System.currentTimeMillis(); 3142 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 3143 } 3144 if (mLastBssid != null) { 3145 sb.append(" lastbssid=").append(mLastBssid); 3146 } 3147 if (mWifiInfo.getFrequency() != -1) { 3148 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3149 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3150 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 3151 } 3152 } 3153 break; 3154 case CMD_RSSI_POLL: 3155 case CMD_UNWANTED_NETWORK: 3156 case WifiManager.RSSI_PKTCNT_FETCH: 3157 sb.append(" "); 3158 sb.append(Integer.toString(msg.arg1)); 3159 sb.append(" "); 3160 sb.append(Integer.toString(msg.arg2)); 3161 if (mWifiInfo.getSSID() != null) 3162 if (mWifiInfo.getSSID() != null) 3163 sb.append(" ").append(mWifiInfo.getSSID()); 3164 if (mWifiInfo.getBSSID() != null) 3165 sb.append(" ").append(mWifiInfo.getBSSID()); 3166 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3167 sb.append(" f=").append(mWifiInfo.getFrequency()); 3168 sb.append(" sc=").append(mWifiInfo.score); 3169 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 3170 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 3171 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 3172 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 3173 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 3174 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3175 report = reportOnTime(); 3176 if (report != null) { 3177 sb.append(" ").append(report); 3178 } 3179 if (wifiScoringReport != null) { 3180 sb.append(wifiScoringReport); 3181 } 3182 if (mConnectedModeGScanOffloadStarted) { 3183 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3184 } else { 3185 sb.append(" offload-stopped"); 3186 } 3187 break; 3188 case CMD_AUTO_CONNECT: 3189 case WifiManager.CONNECT_NETWORK: 3190 sb.append(" "); 3191 sb.append(Integer.toString(msg.arg1)); 3192 sb.append(" "); 3193 sb.append(Integer.toString(msg.arg2)); 3194 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3195 if (config != null) { 3196 sb.append(" ").append(config.configKey()); 3197 if (config.visibility != null) { 3198 sb.append(" ").append(config.visibility.toString()); 3199 } 3200 } 3201 if (mTargetRoamBSSID != null) { 3202 sb.append(" ").append(mTargetRoamBSSID); 3203 } 3204 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3205 config = getCurrentWifiConfiguration(); 3206 if (config != null) { 3207 sb.append(config.configKey()); 3208 if (config.visibility != null) { 3209 sb.append(" ").append(config.visibility.toString()); 3210 } 3211 } 3212 break; 3213 case CMD_AUTO_ROAM: 3214 sb.append(" "); 3215 sb.append(Integer.toString(msg.arg1)); 3216 sb.append(" "); 3217 sb.append(Integer.toString(msg.arg2)); 3218 ScanResult result = (ScanResult) msg.obj; 3219 if (result != null) { 3220 now = System.currentTimeMillis(); 3221 sb.append(" bssid=").append(result.BSSID); 3222 sb.append(" rssi=").append(result.level); 3223 sb.append(" freq=").append(result.frequency); 3224 if (result.seen > 0 && result.seen < now) { 3225 sb.append(" seen=").append(now - result.seen); 3226 } else { 3227 // Somehow the timestamp for this scan result is inconsistent 3228 sb.append(" !seen=").append(result.seen); 3229 } 3230 } 3231 if (mTargetRoamBSSID != null) { 3232 sb.append(" ").append(mTargetRoamBSSID); 3233 } 3234 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3235 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3236 break; 3237 case CMD_ADD_OR_UPDATE_NETWORK: 3238 sb.append(" "); 3239 sb.append(Integer.toString(msg.arg1)); 3240 sb.append(" "); 3241 sb.append(Integer.toString(msg.arg2)); 3242 if (msg.obj != null) { 3243 config = (WifiConfiguration) msg.obj; 3244 sb.append(" ").append(config.configKey()); 3245 sb.append(" prio=").append(config.priority); 3246 sb.append(" status=").append(config.status); 3247 if (config.BSSID != null) { 3248 sb.append(" ").append(config.BSSID); 3249 } 3250 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3251 if (curConfig != null) { 3252 if (curConfig.configKey().equals(config.configKey())) { 3253 sb.append(" is current"); 3254 } else { 3255 sb.append(" current=").append(curConfig.configKey()); 3256 sb.append(" prio=").append(curConfig.priority); 3257 sb.append(" status=").append(curConfig.status); 3258 } 3259 } 3260 } 3261 break; 3262 case WifiManager.DISABLE_NETWORK: 3263 case CMD_ENABLE_NETWORK: 3264 sb.append(" "); 3265 sb.append(Integer.toString(msg.arg1)); 3266 sb.append(" "); 3267 sb.append(Integer.toString(msg.arg2)); 3268 key = mWifiConfigStore.getLastSelectedConfiguration(); 3269 if (key != null) { 3270 sb.append(" last=").append(key); 3271 } 3272 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3273 if (config != null && (key == null || !config.configKey().equals(key))) { 3274 sb.append(" target=").append(key); 3275 } 3276 break; 3277 case CMD_GET_CONFIGURED_NETWORKS: 3278 sb.append(" "); 3279 sb.append(Integer.toString(msg.arg1)); 3280 sb.append(" "); 3281 sb.append(Integer.toString(msg.arg2)); 3282 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3283 break; 3284 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3285 sb.append(" "); 3286 sb.append(Integer.toString(msg.arg1)); 3287 sb.append(" "); 3288 sb.append(Integer.toString(msg.arg2)); 3289 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3290 sb.append(",").append(mWifiInfo.txBad); 3291 sb.append(",").append(mWifiInfo.txRetries); 3292 break; 3293 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3294 sb.append(" "); 3295 sb.append(Integer.toString(msg.arg1)); 3296 sb.append(" "); 3297 sb.append(Integer.toString(msg.arg2)); 3298 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3299 sb.append(" OK "); 3300 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3301 sb.append(" FAIL "); 3302 } 3303 if (mLinkProperties != null) { 3304 sb.append(" "); 3305 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3306 } 3307 break; 3308 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3309 sb.append(" "); 3310 sb.append(Integer.toString(msg.arg1)); 3311 sb.append(" "); 3312 sb.append(Integer.toString(msg.arg2)); 3313 if (msg.obj != null) { 3314 NetworkInfo info = (NetworkInfo) msg.obj; 3315 NetworkInfo.State state = info.getState(); 3316 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3317 if (state != null) { 3318 sb.append(" st=").append(state); 3319 } 3320 if (detailedState != null) { 3321 sb.append("/").append(detailedState); 3322 } 3323 } 3324 break; 3325 case CMD_IP_CONFIGURATION_LOST: 3326 int count = -1; 3327 WifiConfiguration c = getCurrentWifiConfiguration(); 3328 if (c != null) { 3329 count = c.getNetworkSelectionStatus().getDisableReasonCounter( 3330 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 3331 } 3332 sb.append(" "); 3333 sb.append(Integer.toString(msg.arg1)); 3334 sb.append(" "); 3335 sb.append(Integer.toString(msg.arg2)); 3336 sb.append(" failures: "); 3337 sb.append(Integer.toString(count)); 3338 sb.append("/"); 3339 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3340 if (mWifiInfo.getBSSID() != null) { 3341 sb.append(" ").append(mWifiInfo.getBSSID()); 3342 } 3343 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3344 break; 3345 case CMD_UPDATE_LINKPROPERTIES: 3346 sb.append(" "); 3347 sb.append(Integer.toString(msg.arg1)); 3348 sb.append(" "); 3349 sb.append(Integer.toString(msg.arg2)); 3350 if (mLinkProperties != null) { 3351 sb.append(" "); 3352 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3353 } 3354 break; 3355 case CMD_IP_REACHABILITY_LOST: 3356 if (msg.obj != null) { 3357 sb.append(" ").append((String) msg.obj); 3358 } 3359 break; 3360 case CMD_SET_COUNTRY_CODE: 3361 sb.append(" "); 3362 sb.append(Integer.toString(msg.arg1)); 3363 sb.append(" "); 3364 sb.append(Integer.toString(msg.arg2)); 3365 if (msg.obj != null) { 3366 sb.append(" ").append((String) msg.obj); 3367 } 3368 break; 3369 case CMD_ROAM_WATCHDOG_TIMER: 3370 sb.append(" "); 3371 sb.append(Integer.toString(msg.arg1)); 3372 sb.append(" "); 3373 sb.append(Integer.toString(msg.arg2)); 3374 sb.append(" cur=").append(roamWatchdogCount); 3375 break; 3376 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3377 sb.append(" "); 3378 sb.append(Integer.toString(msg.arg1)); 3379 sb.append(" "); 3380 sb.append(Integer.toString(msg.arg2)); 3381 sb.append(" cur=").append(disconnectingWatchdogCount); 3382 break; 3383 case CMD_START_RSSI_MONITORING_OFFLOAD: 3384 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3385 case CMD_RSSI_THRESHOLD_BREACH: 3386 sb.append(" rssi="); 3387 sb.append(Integer.toString(msg.arg1)); 3388 sb.append(" thresholds="); 3389 sb.append(Arrays.toString(mRssiRanges)); 3390 break; 3391 case CMD_USER_SWITCH: 3392 sb.append(" userId="); 3393 sb.append(Integer.toString(msg.arg1)); 3394 break; 3395 case CMD_IPV4_PROVISIONING_SUCCESS: 3396 sb.append(" "); 3397 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3398 sb.append("DHCP_OK"); 3399 } else if (msg.arg1 == CMD_STATIC_IP_SUCCESS) { 3400 sb.append("STATIC_OK"); 3401 } else { 3402 sb.append(Integer.toString(msg.arg1)); 3403 } 3404 break; 3405 case CMD_IPV4_PROVISIONING_FAILURE: 3406 sb.append(" "); 3407 if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3408 sb.append("DHCP_FAIL"); 3409 } else if (msg.arg1 == CMD_STATIC_IP_FAILURE) { 3410 sb.append("STATIC_FAIL"); 3411 } else { 3412 sb.append(Integer.toString(msg.arg1)); 3413 } 3414 break; 3415 default: 3416 sb.append(" "); 3417 sb.append(Integer.toString(msg.arg1)); 3418 sb.append(" "); 3419 sb.append(Integer.toString(msg.arg2)); 3420 break; 3421 } 3422 3423 return sb.toString(); 3424 } 3425 3426 private void stopPnoOffload() { 3427 3428 // clear the PNO list 3429 if (!mWifiNative.setPnoList(null, WifiStateMachine.this)) { 3430 Log.e(TAG, "Failed to stop pno"); 3431 } 3432 3433 } 3434 3435 3436 private boolean configureSsidWhiteList() { 3437 3438 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3439 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3440 return true; 3441 } 3442 3443 if (!mWifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3444 loge("configureSsidWhiteList couldnt program SSID list, size " 3445 + mWhiteListedSsids.length); 3446 return false; 3447 } 3448 3449 logd("configureSsidWhiteList success"); 3450 return true; 3451 } 3452 3453 // In associated more, lazy roam will be looking for 5GHz roam candidate 3454 //Fixme: This is for network selection offload , whole function need to be re-written according 3455 // to the new design 3456 private boolean configureLazyRoam() { 3457 /*boolean status; 3458 if (!useHalBasedAutoJoinOffload()) return false; 3459 3460 WifiNative.WifiLazyRoamParams params = new WifiNative.WifiLazyRoamParams(); 3461 //params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3462 //params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3463 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3464 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3465 params.A_band_max_boost = 65; 3466 params.lazy_roam_hysteresis = 25; 3467 params.alert_roam_rssi_trigger = -75; 3468 3469 if (DBG) { 3470 Log.e(TAG, "configureLazyRoam " + params.toString()); 3471 } 3472 3473 if (!mWifiNative.setLazyRoam(true, params)) { 3474 3475 Log.e(TAG, "configureLazyRoam couldnt program params"); 3476 3477 return false; 3478 } 3479 if (DBG) { 3480 Log.e(TAG, "configureLazyRoam success"); 3481 }*/ 3482 return true; 3483 } 3484 3485 // In associated more, lazy roam will be looking for 5GHz roam candidate 3486 private boolean stopLazyRoam() { 3487 boolean status; 3488 if (!useHalBasedAutoJoinOffload()) return false; 3489 if (DBG) { 3490 Log.e(TAG, "stopLazyRoam"); 3491 } 3492 return mWifiNative.setLazyRoam(false, null); 3493 } 3494 3495 private boolean startGScanConnectedModeOffload(String reason) { 3496 if (DBG) { 3497 if (reason == null) { 3498 reason = ""; 3499 } 3500 logd("startGScanConnectedModeOffload " + reason); 3501 } 3502 stopGScan("startGScanConnectedModeOffload " + reason); 3503 if (!mScreenOn) return false; 3504 3505 if (USE_PAUSE_SCANS) { 3506 mWifiNative.pauseScan(); 3507 } 3508 mPnoEnabled = configurePno(); 3509 if (mPnoEnabled == false) { 3510 if (USE_PAUSE_SCANS) { 3511 mWifiNative.restartScan(); 3512 } 3513 return false; 3514 } 3515 mLazyRoamEnabled = configureLazyRoam(); 3516 if (mLazyRoamEnabled == false) { 3517 if (USE_PAUSE_SCANS) { 3518 mWifiNative.restartScan(); 3519 } 3520 return false; 3521 } 3522 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3523 configureSsidWhiteList(); 3524 } 3525 if (!startConnectedGScan(reason)) { 3526 if (USE_PAUSE_SCANS) { 3527 mWifiNative.restartScan(); 3528 } 3529 return false; 3530 } 3531 if (USE_PAUSE_SCANS) { 3532 mWifiNative.restartScan(); 3533 } 3534 mConnectedModeGScanOffloadStarted = true; 3535 if (DBG) { 3536 logd("startGScanConnectedModeOffload success"); 3537 } 3538 return true; 3539 } 3540 3541 private boolean startGScanDisconnectedModeOffload(String reason) { 3542 if (DBG) { 3543 logd("startGScanDisconnectedModeOffload " + reason); 3544 } 3545 stopGScan("startGScanDisconnectedModeOffload " + reason); 3546 if (USE_PAUSE_SCANS) { 3547 mWifiNative.pauseScan(); 3548 } 3549 mPnoEnabled = configurePno(); 3550 if (mPnoEnabled == false) { 3551 if (USE_PAUSE_SCANS) { 3552 mWifiNative.restartScan(); 3553 } 3554 return false; 3555 } 3556 if (!startDisconnectedGScan(reason)) { 3557 if (USE_PAUSE_SCANS) { 3558 mWifiNative.restartScan(); 3559 } 3560 return false; 3561 } 3562 if (USE_PAUSE_SCANS) { 3563 mWifiNative.restartScan(); 3564 } 3565 return true; 3566 } 3567 3568 private boolean configurePno() { 3569 if (!useHalBasedAutoJoinOffload()) return false; 3570 3571 if (mWifiScanner == null) { 3572 log("configurePno: mWifiScanner is null "); 3573 return true; 3574 } 3575 3576 List<WifiNative.WifiPnoNetwork> llist = null; 3577 //TODO: add getPnoList in WifiQualifiedNetworkSelector 3578 //mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3579 if (llist == null || llist.size() == 0) { 3580 stopPnoOffload(); 3581 log("configurePno: empty PNO list "); 3582 return true; 3583 } 3584 if (DBG) { 3585 log("configurePno: got llist size " + llist.size()); 3586 } 3587 3588 // first program the network we want to look for thru the pno API 3589 WifiNative.WifiPnoNetwork list[] 3590 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3591 3592 if (!mWifiNative.setPnoList(list, WifiStateMachine.this)) { 3593 Log.e(TAG, "Failed to set pno, length = " + list.length); 3594 return false; 3595 } 3596 3597 if (true) { 3598 StringBuilder sb = new StringBuilder(); 3599 for (WifiNative.WifiPnoNetwork network : list) { 3600 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3601 sb.append(" flags="); 3602 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3603 sb.append("] "); 3604 3605 } 3606 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3607 } 3608 return true; 3609 } 3610 3611 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3612 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3613 3614 private boolean startConnectedGScan(String reason) { 3615 // send a scan background request so as to kick firmware 3616 // 5GHz roaming and autojoin 3617 // We do this only if screen is on 3618 WifiScanner.ScanSettings settings; 3619 3620 if (mPnoEnabled || mLazyRoamEnabled) { 3621 settings = new WifiScanner.ScanSettings(); 3622 settings.band = WifiScanner.WIFI_BAND_BOTH; 3623 long now = System.currentTimeMillis(); 3624 3625 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3626 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3627 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3628 } else { 3629 mGScanStartTimeMilli = now; 3630 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3631 // if we start offload with short interval, then reconfigure it after a given 3632 // duration of time so as to reduce the scan frequency 3633 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3634 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3635 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3636 (long)delay); 3637 mRestartAutoJoinOffloadCounter++; 3638 } 3639 mGScanPeriodMilli = settings.periodInMs; 3640 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3641 if (DBG) { 3642 log("startConnectedScan: settings band="+ settings.band 3643 + " period=" + settings.periodInMs); 3644 } 3645 3646 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3647 if (true) { 3648 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3649 } 3650 } 3651 return true; 3652 } 3653 3654 private boolean startDisconnectedGScan(String reason) { 3655 // send a scan background request so as to kick firmware 3656 // PNO 3657 // This is done in both screen On and screen Off modes 3658 WifiScanner.ScanSettings settings; 3659 3660 if (mWifiScanner == null) { 3661 log("startDisconnectedGScan: no wifi scanner"); 3662 return false; 3663 } 3664 3665 if (mPnoEnabled || mLazyRoamEnabled) { 3666 settings = new WifiScanner.ScanSettings(); 3667 settings.band = WifiScanner.WIFI_BAND_BOTH; 3668 long now = System.currentTimeMillis(); 3669 3670 3671 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3672 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3673 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3674 } else { 3675 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3676 mGScanStartTimeMilli = now; 3677 // if we start offload with short interval, then reconfigure it after a given 3678 // duration of time so as to reduce the scan frequency 3679 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3680 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3681 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3682 (long)delay); 3683 mRestartAutoJoinOffloadCounter++; 3684 } 3685 mGScanPeriodMilli = settings.periodInMs; 3686 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3687 if (DBG) { 3688 log("startDisconnectedScan: settings band="+ settings.band 3689 + " period=" + settings.periodInMs); 3690 } 3691 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3692 if (true) { 3693 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3694 } 3695 } 3696 return true; 3697 } 3698 3699 private boolean stopGScan(String reason) { 3700 mGScanStartTimeMilli = 0; 3701 mGScanPeriodMilli = 0; 3702 if (mWifiScanner != null) { 3703 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3704 } 3705 mConnectedModeGScanOffloadStarted = false; 3706 if (true) { 3707 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3708 } 3709 return true; 3710 } 3711 3712 private void handleScreenStateChanged(boolean screenOn) { 3713 mScreenOn = screenOn; 3714 if (PDBG) { 3715 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3716 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3717 + " state " + getCurrentState().getName() 3718 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3719 } 3720 enableRssiPolling(screenOn); 3721 if (mUserWantsSuspendOpt.get()) { 3722 if (screenOn) { 3723 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3724 } else { 3725 // Allow 2s for suspend optimizations to be set 3726 mSuspendWakeLock.acquire(2000); 3727 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3728 } 3729 } 3730 mScreenBroadcastReceived.set(true); 3731 3732 getWifiLinkLayerStats(false); 3733 mOnTimeScreenStateChange = mOnTime; 3734 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3735 3736 cancelDelayedScan(); 3737 3738 if (screenOn) { 3739 enableBackgroundScan(false); 3740 setScanAlarm(false); 3741 clearBlacklist(); 3742 3743 fullBandConnectedTimeIntervalMilli 3744 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3745 // In either Disconnectedstate or ConnectedState, 3746 // start the scan alarm so as to enable autojoin 3747 if (getCurrentState() == mConnectedState 3748 && allowFullBandScanAndAssociated()) { 3749 if (useHalBasedAutoJoinOffload()) { 3750 startGScanConnectedModeOffload("screenOnConnected"); 3751 } else { 3752 // Scan after 500ms 3753 startDelayedScan(500, null, null); 3754 } 3755 } else if (getCurrentState() == mDisconnectedState) { 3756 if (useHalBasedAutoJoinOffload()) { 3757 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3758 } else { 3759 // Scan after 500ms 3760 startDelayedScan(500, null, null); 3761 } 3762 } 3763 } else { 3764 if (getCurrentState() == mDisconnectedState) { 3765 // Screen Off and Disconnected and chipset doesn't support scan offload 3766 // => start scan alarm 3767 // Screen Off and Disconnected and chipset does support scan offload 3768 // => will use scan offload (i.e. background scan) 3769 if (useHalBasedAutoJoinOffload()) { 3770 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3771 } else { 3772 if (!mBackgroundScanSupported) { 3773 setScanAlarm(true); 3774 } else { 3775 if (!mIsScanOngoing) { 3776 enableBackgroundScan(true); 3777 } 3778 } 3779 } 3780 } else { 3781 enableBackgroundScan(false); 3782 if (useHalBasedAutoJoinOffload()) { 3783 // don't try stop Gscan if it is not enabled 3784 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3785 } 3786 } 3787 } 3788 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3789 3790 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3791 } 3792 3793 private void checkAndSetConnectivityInstance() { 3794 if (mCm == null) { 3795 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3796 } 3797 } 3798 3799 private boolean startTethering(ArrayList<String> available) { 3800 3801 boolean wifiAvailable = false; 3802 3803 checkAndSetConnectivityInstance(); 3804 3805 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3806 3807 for (String intf : available) { 3808 for (String regex : wifiRegexs) { 3809 if (intf.matches(regex)) { 3810 3811 InterfaceConfiguration ifcg = null; 3812 try { 3813 ifcg = mNwService.getInterfaceConfig(intf); 3814 if (ifcg != null) { 3815 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3816 ifcg.setLinkAddress(new LinkAddress( 3817 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3818 ifcg.setInterfaceUp(); 3819 3820 mNwService.setInterfaceConfig(intf, ifcg); 3821 } 3822 } catch (Exception e) { 3823 loge("Error configuring interface " + intf + ", :" + e); 3824 return false; 3825 } 3826 3827 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3828 loge("Error tethering on " + intf); 3829 return false; 3830 } 3831 mTetherInterfaceName = intf; 3832 return true; 3833 } 3834 } 3835 } 3836 // We found no interfaces to tether 3837 return false; 3838 } 3839 3840 private void stopTethering() { 3841 3842 checkAndSetConnectivityInstance(); 3843 3844 /* Clear the interface config to allow dhcp correctly configure new 3845 ip settings */ 3846 InterfaceConfiguration ifcg = null; 3847 try { 3848 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3849 if (ifcg != null) { 3850 ifcg.setLinkAddress( 3851 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3852 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3853 } 3854 } catch (Exception e) { 3855 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3856 } 3857 3858 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3859 loge("Untether initiate failed!"); 3860 } 3861 } 3862 3863 private boolean isWifiTethered(ArrayList<String> active) { 3864 3865 checkAndSetConnectivityInstance(); 3866 3867 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3868 for (String intf : active) { 3869 for (String regex : wifiRegexs) { 3870 if (intf.matches(regex)) { 3871 return true; 3872 } 3873 } 3874 } 3875 // We found no interfaces that are tethered 3876 return false; 3877 } 3878 3879 /** 3880 * Set the country code from the system setting value, if any. 3881 */ 3882 private void initializeCountryCode() { 3883 String countryCode = getCurrentCountryCode(); 3884 if (countryCode != null && !countryCode.isEmpty()) { 3885 setCountryCode(countryCode, false); 3886 } else { 3887 //use driver default 3888 } 3889 } 3890 3891 /** 3892 * Set the frequency band from the system setting value, if any. 3893 */ 3894 private void setFrequencyBand() { 3895 int band = mFacade.getIntegerSetting(mContext, 3896 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3897 3898 if (mWifiNative.setBand(band)) { 3899 mFrequencyBand.set(band); 3900 if (PDBG) { 3901 logd("done set frequency band " + band); 3902 mWifiQualifiedNetworkSelector.setUserPreferredBand(band); 3903 } 3904 } else { 3905 loge("Failed to set frequency band " + band); 3906 } 3907 } 3908 3909 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3910 if (DBG) { 3911 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3912 + " -want " + mUserWantsSuspendOpt.get() 3913 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3914 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3915 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3916 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3917 } 3918 //mWifiNative.setSuspendOptimizations(enabled); 3919 3920 if (enabled) { 3921 mSuspendOptNeedsDisabled &= ~reason; 3922 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3923 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3924 if (DBG) { 3925 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3926 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3927 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3928 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3929 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3930 } 3931 mWifiNative.setSuspendOptimizations(true); 3932 } 3933 } else { 3934 mSuspendOptNeedsDisabled |= reason; 3935 mWifiNative.setSuspendOptimizations(false); 3936 } 3937 } 3938 3939 private void setSuspendOptimizations(int reason, boolean enabled) { 3940 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3941 if (enabled) { 3942 mSuspendOptNeedsDisabled &= ~reason; 3943 } else { 3944 mSuspendOptNeedsDisabled |= reason; 3945 } 3946 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3947 } 3948 3949 private void setWifiState(int wifiState) { 3950 final int previousWifiState = mWifiState.get(); 3951 3952 try { 3953 if (wifiState == WIFI_STATE_ENABLED) { 3954 mBatteryStats.noteWifiOn(); 3955 } else if (wifiState == WIFI_STATE_DISABLED) { 3956 mBatteryStats.noteWifiOff(); 3957 } 3958 } catch (RemoteException e) { 3959 loge("Failed to note battery stats in wifi"); 3960 } 3961 3962 mWifiState.set(wifiState); 3963 3964 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3965 3966 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3967 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3968 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3969 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3970 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3971 } 3972 3973 private void setWifiApState(int wifiApState, int reason) { 3974 final int previousWifiApState = mWifiApState.get(); 3975 3976 try { 3977 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3978 mBatteryStats.noteWifiOn(); 3979 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3980 mBatteryStats.noteWifiOff(); 3981 } 3982 } catch (RemoteException e) { 3983 loge("Failed to note battery stats in wifi"); 3984 } 3985 3986 // Update state 3987 mWifiApState.set(wifiApState); 3988 3989 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3990 3991 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3992 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3993 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3994 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3995 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3996 //only set reason number when softAP start failed 3997 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3998 } 3999 4000 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4001 } 4002 4003 private void setScanResults() { 4004 mNumScanResultsKnown = 0; 4005 mNumScanResultsReturned = 0; 4006 4007 ArrayList<ScanDetail> scanResults = mWifiNative.getScanResults(); 4008 4009 if (scanResults.isEmpty()) { 4010 mScanResults = new ArrayList<>(); 4011 return; 4012 } 4013 4014 mWifiConfigStore.trimANQPCache(false); 4015 4016 boolean connected = mLastBssid != null; 4017 long activeBssid = 0L; 4018 if (connected) { 4019 try { 4020 activeBssid = Utils.parseMac(mLastBssid); 4021 } catch (IllegalArgumentException iae) { 4022 connected = false; 4023 } 4024 } 4025 4026 synchronized (mScanResultCache) { 4027 ScanDetail activeScanDetail = null; 4028 mScanResults = scanResults; 4029 mNumScanResultsReturned = mScanResults.size(); 4030 for (ScanDetail resultDetail : mScanResults) { 4031 mScanResultCache.put(resultDetail.getNetworkDetail(), resultDetail); 4032 if (connected && resultDetail.getNetworkDetail().getBSSID() == activeBssid) { 4033 if (activeScanDetail == null 4034 || activeScanDetail.getNetworkDetail().getBSSID() != activeBssid 4035 || activeScanDetail.getNetworkDetail().getANQPElements() == null) { 4036 activeScanDetail = resultDetail; 4037 } 4038 } 4039 } 4040 mActiveScanDetail = activeScanDetail; 4041 } 4042 if (mNumScanResultsReturned > 0) { 4043 mWifiMetrics.incrementNonEmptyScanResultCount(); 4044 } else { 4045 mWifiMetrics.incrementEmptyScanResultCount(); 4046 } 4047 4048 if (linkDebouncing) { 4049 // If debouncing, we dont re-select a SSID or BSSID hence 4050 // there is no need to call the network selection code 4051 // in WifiAutoJoinController, instead, 4052 // just try to reconnect to the same SSID by triggering a roam 4053 // The third parameter 1 means roam not from network selection but debouncing 4054 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4055 } else { 4056 WifiConfiguration candidate = 4057 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false, 4058 mAllowUntrustedConnections, mScanResults, linkDebouncing, isConnected(), 4059 isDisconnected(), isSupplicantTransientState()); 4060 tryToConnectToNetwork(candidate); 4061 } 4062 } 4063 4064 /** 4065 * Set whether connections to untrusted connections are allowed. 4066 */ 4067 void setAllowUntrustedConnections(boolean allow) { 4068 boolean changed = (mAllowUntrustedConnections != allow); 4069 mAllowUntrustedConnections = allow; 4070 if (changed) { 4071 // Trigger a scan so as to reattempt autojoin 4072 startScanForUntrustedSettingChange(); 4073 } 4074 } 4075 4076 public ScanDetail getActiveScanDetail() { 4077 synchronized (mScanResultCache) { 4078 return mActiveScanDetail; 4079 } 4080 } 4081 4082 /* 4083 * Fetch RSSI, linkspeed, and frequency on current connection 4084 */ 4085 private void fetchRssiLinkSpeedAndFrequencyNative() { 4086 Integer newRssi = null; 4087 Integer newLinkSpeed = null; 4088 Integer newFrequency = null; 4089 4090 String signalPoll = mWifiNative.signalPoll(); 4091 4092 if (signalPoll != null) { 4093 String[] lines = signalPoll.split("\n"); 4094 for (String line : lines) { 4095 String[] prop = line.split("="); 4096 if (prop.length < 2) continue; 4097 try { 4098 if (prop[0].equals("RSSI")) { 4099 newRssi = Integer.parseInt(prop[1]); 4100 } else if (prop[0].equals("LINKSPEED")) { 4101 newLinkSpeed = Integer.parseInt(prop[1]); 4102 } else if (prop[0].equals("FREQUENCY")) { 4103 newFrequency = Integer.parseInt(prop[1]); 4104 } 4105 } catch (NumberFormatException e) { 4106 //Ignore, defaults on rssi and linkspeed are assigned 4107 } 4108 } 4109 } 4110 4111 if (PDBG) { 4112 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi + 4113 " linkspeed=" + newLinkSpeed + " freq=" + newFrequency); 4114 } 4115 4116 if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4117 // screen out invalid values 4118 /* some implementations avoid negative values by adding 256 4119 * so we need to adjust for that here. 4120 */ 4121 if (newRssi > 0) newRssi -= 256; 4122 mWifiInfo.setRssi(newRssi); 4123 /* 4124 * Rather then sending the raw RSSI out every time it 4125 * changes, we precalculate the signal level that would 4126 * be displayed in the status bar, and only send the 4127 * broadcast if that much more coarse-grained number 4128 * changes. This cuts down greatly on the number of 4129 * broadcasts, at the cost of not informing others 4130 * interested in RSSI of all the changes in signal 4131 * level. 4132 */ 4133 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4134 if (newSignalLevel != mLastSignalLevel) { 4135 updateCapabilities(getCurrentWifiConfiguration()); 4136 sendRssiChangeBroadcast(newRssi); 4137 } 4138 mLastSignalLevel = newSignalLevel; 4139 } else { 4140 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4141 updateCapabilities(getCurrentWifiConfiguration()); 4142 } 4143 4144 if (newLinkSpeed != null) { 4145 mWifiInfo.setLinkSpeed(newLinkSpeed); 4146 } 4147 if (newFrequency != null && newFrequency > 0) { 4148 if (ScanResult.is5GHz(newFrequency)) { 4149 mWifiConnectionStatistics.num5GhzConnected++; 4150 } 4151 if (ScanResult.is24GHz(newFrequency)) { 4152 mWifiConnectionStatistics.num24GhzConnected++; 4153 } 4154 mWifiInfo.setFrequency(newFrequency); 4155 } 4156 mWifiConfigStore.updateConfiguration(mWifiInfo); 4157 } 4158 4159 /** 4160 * Determine if we need to switch network: 4161 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4162 * - match the uregncy of the switch versus the packet usage at the interface 4163 */ 4164 boolean shouldSwitchNetwork(int networkDelta) { 4165 int delta; 4166 if (networkDelta <= 0) { 4167 return false; 4168 } 4169 delta = networkDelta; 4170 if (mWifiInfo != null) { 4171 if (!getEnableAutoJoinWhenAssociated() 4172 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4173 // If AutoJoin while associated is not enabled, 4174 // we should never switch network when already associated 4175 delta = -1000; 4176 } else { 4177 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4178 // TODO: at the interface. We should also discriminate between ucast and mcast, 4179 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4180 // TODO: broadcasts 4181 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4182 delta -= 999; 4183 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4184 delta -= 6; 4185 } 4186 logd("shouldSwitchNetwork " 4187 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4188 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4189 + " delta " + networkDelta + " -> " + delta); 4190 } 4191 } else { 4192 logd("shouldSwitchNetwork " 4193 + " delta " + networkDelta + " -> " + delta); 4194 } 4195 if (delta > 0) { 4196 return true; 4197 } 4198 return false; 4199 } 4200 4201 // Polling has completed, hence we wont have a score anymore 4202 private void cleanWifiScore() { 4203 mWifiInfo.txBadRate = 0; 4204 mWifiInfo.txSuccessRate = 0; 4205 mWifiInfo.txRetriesRate = 0; 4206 mWifiInfo.rxSuccessRate = 0; 4207 } 4208 4209 int mBadLinkspeedcount = 0; 4210 4211 // For debug, provide information about the last scoring operation 4212 String wifiScoringReport = null; 4213 4214 private void calculateWifiScore(WifiLinkLayerStats stats) { 4215 StringBuilder sb = new StringBuilder(); 4216 4217 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4218 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4219 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4220 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4221 < mWifiConfigStore.badLinkSpeed5); 4222 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4223 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4224 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4225 >= mWifiConfigStore.goodLinkSpeed5); 4226 4227 if (isBadLinkspeed) { 4228 if (mBadLinkspeedcount < 6) 4229 mBadLinkspeedcount++; 4230 } else { 4231 if (mBadLinkspeedcount > 0) 4232 mBadLinkspeedcount--; 4233 } 4234 4235 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4236 if (isGoodLinkspeed) sb.append(" gl"); 4237 4238 /** 4239 * We want to make sure that we use the 24GHz RSSI thresholds if 4240 * there are 2.4GHz scan results 4241 * otherwise we end up lowering the score based on 5GHz values 4242 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4243 * We also might unblacklist the configuation based on 2.4GHz 4244 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4245 */ 4246 boolean use24Thresholds = false; 4247 boolean homeNetworkBoost = false; 4248 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4249 ScanDetailCache scanDetailCache = 4250 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4251 if (currentConfiguration != null && scanDetailCache != null) { 4252 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4253 if (currentConfiguration.visibility != null) { 4254 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4255 && currentConfiguration.visibility.rssi24 4256 >= (currentConfiguration.visibility.rssi5 - 2)) { 4257 use24Thresholds = true; 4258 } 4259 } 4260 if (scanDetailCache.size() <= 6 4261 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4262 && currentConfiguration.allowedKeyManagement. 4263 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4264 // A PSK network with less than 6 known BSSIDs 4265 // This is most likely a home network and thus we want to stick to wifi more 4266 homeNetworkBoost = true; 4267 } 4268 } 4269 if (homeNetworkBoost) sb.append(" hn"); 4270 if (use24Thresholds) sb.append(" u24"); 4271 4272 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4273 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4274 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4275 4276 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4277 4278 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 4279 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 4280 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 4281 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdMinimumRssi5.get()); 4282 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 4283 || (!is24GHz && mWifiInfo.getRssi() 4284 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 4285 4286 if (isBadRSSI) sb.append(" br"); 4287 if (isLowRSSI) sb.append(" lr"); 4288 if (isHighRSSI) sb.append(" hr"); 4289 4290 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4291 if (currentConfiguration != null && 4292 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4293 if (isBadRSSI) { 4294 currentConfiguration.numTicksAtBadRSSI++; 4295 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4296 // We remained associated for a compound amount of time while passing 4297 // traffic, hence loose the corresponding user triggered disabled stats 4298 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4299 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4300 } 4301 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4302 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4303 } 4304 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4305 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4306 } 4307 currentConfiguration.numTicksAtBadRSSI = 0; 4308 } 4309 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4310 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4311 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4312 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4313 score = score - 5; 4314 penalizedDueToUserTriggeredDisconnect = 1; 4315 sb.append(" p1"); 4316 } 4317 } else if (isLowRSSI) { 4318 currentConfiguration.numTicksAtLowRSSI++; 4319 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4320 // We remained associated for a compound amount of time while passing 4321 // traffic, hence loose the corresponding user triggered disabled stats 4322 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4323 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4324 } 4325 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4326 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4327 } 4328 currentConfiguration.numTicksAtLowRSSI = 0; 4329 } 4330 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4331 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4332 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4333 score = score - 5; 4334 penalizedDueToUserTriggeredDisconnect = 2; 4335 sb.append(" p2"); 4336 } 4337 } else if (!isHighRSSI) { 4338 currentConfiguration.numTicksAtNotHighRSSI++; 4339 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4340 // We remained associated for a compound amount of time while passing 4341 // traffic, hence loose the corresponding user triggered disabled stats 4342 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4343 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4344 } 4345 currentConfiguration.numTicksAtNotHighRSSI = 0; 4346 } 4347 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4348 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4349 score = score - 5; 4350 penalizedDueToUserTriggeredDisconnect = 3; 4351 sb.append(" p3"); 4352 } 4353 } 4354 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4355 currentConfiguration.numTicksAtLowRSSI, 4356 currentConfiguration.numTicksAtNotHighRSSI)); 4357 } 4358 4359 if (PDBG) { 4360 String rssiStatus = ""; 4361 if (isBadRSSI) rssiStatus += " badRSSI "; 4362 else if (isHighRSSI) rssiStatus += " highRSSI "; 4363 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4364 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4365 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4366 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4367 + " score=" + Integer.toString(mWifiInfo.score) 4368 + rssiStatus 4369 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4370 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4371 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4372 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4373 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4374 } 4375 4376 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4377 && (isBadRSSI || isLowRSSI)) { 4378 // Link is stuck 4379 if (mWifiInfo.linkStuckCount < 5) 4380 mWifiInfo.linkStuckCount += 1; 4381 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4382 if (PDBG) logd(" bad link -> stuck count =" 4383 + Integer.toString(mWifiInfo.linkStuckCount)); 4384 } else if (mWifiInfo.txBadRate < 0.3) { 4385 if (mWifiInfo.linkStuckCount > 0) 4386 mWifiInfo.linkStuckCount -= 1; 4387 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4388 if (PDBG) logd(" good link -> stuck count =" 4389 + Integer.toString(mWifiInfo.linkStuckCount)); 4390 } 4391 4392 sb.append(String.format(" [%d", score)); 4393 4394 if (mWifiInfo.linkStuckCount > 1) { 4395 // Once link gets stuck for more than 3 seconds, start reducing the score 4396 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4397 } 4398 sb.append(String.format(",%d", score)); 4399 4400 if (isBadLinkspeed) { 4401 score -= 4; 4402 if (PDBG) { 4403 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4404 + " score=" + Integer.toString(score)); 4405 } 4406 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4407 score += 4; // So as bad rssi alone dont kill us 4408 } 4409 sb.append(String.format(",%d", score)); 4410 4411 if (isBadRSSI) { 4412 if (mWifiInfo.badRssiCount < 7) 4413 mWifiInfo.badRssiCount += 1; 4414 } else if (isLowRSSI) { 4415 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4416 if (mWifiInfo.badRssiCount > 0) { 4417 // Decrement bad Rssi count 4418 mWifiInfo.badRssiCount -= 1; 4419 } 4420 } else { 4421 mWifiInfo.badRssiCount = 0; 4422 mWifiInfo.lowRssiCount = 0; 4423 } 4424 4425 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4426 sb.append(String.format(",%d", score)); 4427 4428 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4429 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4430 + " --> score " + Integer.toString(score)); 4431 4432 4433 if (isHighRSSI) { 4434 score += 5; 4435 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4436 } 4437 sb.append(String.format(",%d]", score)); 4438 4439 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4440 4441 //sanitize boundaries 4442 if (score > NetworkAgent.WIFI_BASE_SCORE) 4443 score = NetworkAgent.WIFI_BASE_SCORE; 4444 if (score < 0) 4445 score = 0; 4446 4447 //report score 4448 if (score != mWifiInfo.score) { 4449 if (DBG) { 4450 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4451 } 4452 mWifiInfo.score = score; 4453 if (mNetworkAgent != null) { 4454 mNetworkAgent.sendNetworkScore(score); 4455 } 4456 } 4457 wifiScoringReport = sb.toString(); 4458 } 4459 4460 public double getTxPacketRate() { 4461 if (mWifiInfo != null) { 4462 return mWifiInfo.txSuccessRate; 4463 } 4464 return -1; 4465 } 4466 4467 public double getRxPacketRate() { 4468 if (mWifiInfo != null) { 4469 return mWifiInfo.rxSuccessRate; 4470 } 4471 return -1; 4472 } 4473 4474 /** 4475 * Fetch TX packet counters on current connection 4476 */ 4477 private void fetchPktcntNative(RssiPacketCountInfo info) { 4478 String pktcntPoll = mWifiNative.pktcntPoll(); 4479 4480 if (pktcntPoll != null) { 4481 String[] lines = pktcntPoll.split("\n"); 4482 for (String line : lines) { 4483 String[] prop = line.split("="); 4484 if (prop.length < 2) continue; 4485 try { 4486 if (prop[0].equals("TXGOOD")) { 4487 info.txgood = Integer.parseInt(prop[1]); 4488 } else if (prop[0].equals("TXBAD")) { 4489 info.txbad = Integer.parseInt(prop[1]); 4490 } 4491 } catch (NumberFormatException e) { 4492 // Ignore 4493 } 4494 } 4495 } 4496 } 4497 4498 private void notifyLinkProperties() { 4499 // TODO: Add setters for TCP buffer sizes and HTTP proxy to IpManager. 4500 // Once that is done delete this. 4501 updateLinkProperties(new LinkProperties(mLinkProperties)); 4502 } 4503 4504 private void updateLinkProperties(LinkProperties newLp) { 4505 // HTTP proxy and TCP buffer sizes are locally configured. 4506 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4507 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4508 newLp.setTcpBufferSizes(mTcpBufferSizes); 4509 } 4510 4511 if (!newLp.equals(mLinkProperties)) { 4512 if (DBG) { 4513 log("Link configuration changed for netId: " + mLastNetworkId 4514 + " old: " + mLinkProperties + " new: " + newLp); 4515 } 4516 // We own this instance of LinkProperties because IpManager passes us a copy. 4517 mLinkProperties = newLp; 4518 if (mNetworkAgent != null) { 4519 mNetworkAgent.sendLinkProperties(mLinkProperties); 4520 } 4521 4522 if (getNetworkDetailedState() == DetailedState.CONNECTED) { 4523 // If anything has changed and we're already connected, send out a notification. 4524 // TODO: Update all callers to use NetworkCallbacks and delete this. 4525 sendLinkConfigurationChangedBroadcast(); 4526 } 4527 } 4528 4529 if (DBG) { 4530 StringBuilder sb = new StringBuilder(); 4531 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4532 sb.append(" state: " + getNetworkDetailedState()); 4533 4534 if (mLinkProperties != null) { 4535 sb.append(" "); 4536 sb.append(getLinkPropertiesSummary(mLinkProperties)); 4537 } 4538 logd(sb.toString()); 4539 } 4540 } 4541 4542 /** 4543 * Clears all our link properties. 4544 */ 4545 private void clearLinkProperties() { 4546 // Clear the link properties obtained from DHCP. The only caller of this 4547 // function has already called IpManager#stop(), which clears its state. 4548 synchronized (mDhcpResultsLock) { 4549 if (mDhcpResults != null) { 4550 mDhcpResults.clear(); 4551 } 4552 } 4553 4554 // Now clear the merged link properties. 4555 mLinkProperties.clear(); 4556 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4557 } 4558 4559 /** 4560 * try to update default route MAC address. 4561 */ 4562 private String updateDefaultRouteMacAddress(int timeout) { 4563 String address = null; 4564 for (RouteInfo route : mLinkProperties.getRoutes()) { 4565 if (route.isDefaultRoute() && route.hasGateway()) { 4566 InetAddress gateway = route.getGateway(); 4567 if (gateway instanceof Inet4Address) { 4568 if (PDBG) { 4569 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4570 + gateway.getHostAddress()); 4571 } 4572 address = macAddressFromRoute(gateway.getHostAddress()); 4573 /* The gateway's MAC address is known */ 4574 if ((address == null) && (timeout > 0)) { 4575 boolean reachable = false; 4576 try { 4577 reachable = gateway.isReachable(timeout); 4578 } catch (Exception e) { 4579 loge("updateDefaultRouteMacAddress exception reaching :" 4580 + gateway.getHostAddress()); 4581 4582 } finally { 4583 if (reachable == true) { 4584 4585 address = macAddressFromRoute(gateway.getHostAddress()); 4586 if (PDBG) { 4587 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4588 + gateway.getHostAddress() + " found " + address); 4589 } 4590 } 4591 } 4592 } 4593 if (address != null) { 4594 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4595 } 4596 } 4597 } 4598 } 4599 return address; 4600 } 4601 4602 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4603 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4604 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4605 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4606 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4607 } 4608 4609 private void sendRssiChangeBroadcast(final int newRssi) { 4610 try { 4611 mBatteryStats.noteWifiRssiChanged(newRssi); 4612 } catch (RemoteException e) { 4613 // Won't happen. 4614 } 4615 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4616 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4617 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4618 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4619 } 4620 4621 private void sendNetworkStateChangeBroadcast(String bssid) { 4622 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4623 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4624 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4625 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4626 if (bssid != null) 4627 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4628 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4629 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4630 // We no longer report MAC address to third-parties and our code does 4631 // not rely on this broadcast, so just send the default MAC address. 4632 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4633 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4634 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4635 } 4636 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4637 } 4638 4639 private WifiInfo getWiFiInfoForUid(int uid) { 4640 if (Binder.getCallingUid() == Process.myUid()) { 4641 return mWifiInfo; 4642 } 4643 4644 WifiInfo result = new WifiInfo(mWifiInfo); 4645 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4646 4647 IBinder binder = mFacade.getService("package"); 4648 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4649 4650 try { 4651 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4652 uid) == PackageManager.PERMISSION_GRANTED) { 4653 result.setMacAddress(mWifiInfo.getMacAddress()); 4654 } 4655 } catch (RemoteException e) { 4656 Log.e(TAG, "Error checking receiver permission", e); 4657 } 4658 4659 return result; 4660 } 4661 4662 private void sendLinkConfigurationChangedBroadcast() { 4663 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4664 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4665 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4666 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4667 } 4668 4669 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4670 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4671 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4672 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4673 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4674 } 4675 4676 /** 4677 * Record the detailed state of a network. 4678 * 4679 * @param state the new {@code DetailedState} 4680 */ 4681 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4682 boolean hidden = false; 4683 4684 if (linkDebouncing || isRoaming()) { 4685 // There is generally a confusion in the system about colluding 4686 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4687 // which leads to multiple confusion. 4688 // 4689 // If link is de-bouncing or roaming, we already have an IP address 4690 // as well we were connected and are doing L2 cycles of 4691 // reconnecting or renewing IP address to check that we still have it 4692 // This L2 link flapping should ne be reflected into the Network state 4693 // which is the state of the WiFi Network visible to Layer 3 and applications 4694 // Note that once debouncing and roaming are completed, we will 4695 // set the Network state to where it should be, or leave it as unchanged 4696 // 4697 hidden = true; 4698 } 4699 if (DBG) { 4700 log("setDetailed state, old =" 4701 + mNetworkInfo.getDetailedState() + " and new state=" + state 4702 + " hidden=" + hidden); 4703 } 4704 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null 4705 && !mWifiInfo.getSSID().equals(WifiSsid.NONE)) { 4706 // Always indicate that SSID has changed 4707 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4708 if (DBG) { 4709 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4710 } 4711 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4712 sendNetworkStateChangeBroadcast(null); 4713 } 4714 } 4715 if (hidden == true) { 4716 return false; 4717 } 4718 4719 if (state != mNetworkInfo.getDetailedState()) { 4720 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4721 if (mNetworkAgent != null) { 4722 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4723 } 4724 sendNetworkStateChangeBroadcast(null); 4725 return true; 4726 } 4727 return false; 4728 } 4729 4730 private DetailedState getNetworkDetailedState() { 4731 return mNetworkInfo.getDetailedState(); 4732 } 4733 4734 private SupplicantState handleSupplicantStateChange(Message message) { 4735 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4736 SupplicantState state = stateChangeResult.state; 4737 // Supplicant state change 4738 // [31-13] Reserved for future use 4739 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4740 // 50023 supplicant_state_changed (custom|1|5) 4741 mWifiInfo.setSupplicantState(state); 4742 // Network id is only valid when we start connecting 4743 if (SupplicantState.isConnecting(state)) { 4744 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4745 } else { 4746 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4747 } 4748 4749 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4750 4751 if (mWhiteListedSsids != null 4752 && mWhiteListedSsids.length > 0 4753 && stateChangeResult.wifiSsid != null) { 4754 String SSID = stateChangeResult.wifiSsid.toString(); 4755 String currentSSID = mWifiInfo.getSSID(); 4756 if (SSID != null && currentSSID != null && !SSID.equals(WifiSsid.NONE)) { 4757 // Remove quote before comparing 4758 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4759 && SSID.charAt(SSID.length() - 1) == '"') { 4760 SSID = SSID.substring(1, SSID.length() - 1); 4761 } 4762 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4763 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4764 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4765 } 4766 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4767 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4768 targetWificonfiguration = 4769 mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4770 transitionTo(mRoamingState); 4771 } 4772 } 4773 } 4774 4775 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4776 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4777 4778 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4779 4780 return state; 4781 } 4782 4783 /** 4784 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4785 * using the interface, stopping DHCP & disabling interface 4786 */ 4787 private void handleNetworkDisconnect() { 4788 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4789 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4790 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4791 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4792 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4793 4794 stopRssiMonitoringOffload(); 4795 4796 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4797 4798 stopIpManager(); 4799 4800 /* Reset data structures */ 4801 mBadLinkspeedcount = 0; 4802 mWifiInfo.reset(); 4803 linkDebouncing = false; 4804 /* Reset roaming parameters */ 4805 mAutoRoaming = false; 4806 4807 /** 4808 * fullBandConnectedTimeIntervalMilli: 4809 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4810 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4811 * Initialize to sane value = 20 seconds 4812 */ 4813 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4814 4815 setNetworkDetailedState(DetailedState.DISCONNECTED); 4816 if (mNetworkAgent != null) { 4817 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4818 mNetworkAgent = null; 4819 } 4820 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4821 4822 /* Clear network properties */ 4823 clearLinkProperties(); 4824 4825 /* Cend event to CM & network change broadcast */ 4826 sendNetworkStateChangeBroadcast(mLastBssid); 4827 4828 /* Cancel auto roam requests */ 4829 autoRoamSetBSSID(mLastNetworkId, "any"); 4830 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4831 mLastBssid = null; 4832 registerDisconnected(); 4833 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4834 } 4835 4836 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4837 /* Socket connection can be lost when we do a graceful shutdown 4838 * or when the driver is hung. Ensure supplicant is stopped here. 4839 */ 4840 if (killSupplicant) { 4841 mWifiMonitor.killSupplicant(mP2pSupported); 4842 } 4843 mWifiNative.closeSupplicantConnection(); 4844 sendSupplicantConnectionChangedBroadcast(false); 4845 setWifiState(WIFI_STATE_DISABLED); 4846 } 4847 4848 void handlePreDhcpSetup() { 4849 if (!mBluetoothConnectionActive) { 4850 /* 4851 * There are problems setting the Wi-Fi driver's power 4852 * mode to active when bluetooth coexistence mode is 4853 * enabled or sense. 4854 * <p> 4855 * We set Wi-Fi to active mode when 4856 * obtaining an IP address because we've found 4857 * compatibility issues with some routers with low power 4858 * mode. 4859 * <p> 4860 * In order for this active power mode to properly be set, 4861 * we disable coexistence mode until we're done with 4862 * obtaining an IP address. One exception is if we 4863 * are currently connected to a headset, since disabling 4864 * coexistence would interrupt that connection. 4865 */ 4866 // Disable the coexistence mode 4867 mWifiNative.setBluetoothCoexistenceMode( 4868 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4869 } 4870 4871 // Disable power save and suspend optimizations during DHCP 4872 // Note: The order here is important for now. Brcm driver changes 4873 // power settings when we control suspend mode optimizations. 4874 // TODO: Remove this comment when the driver is fixed. 4875 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4876 mWifiNative.setPowerSave(false); 4877 4878 // Update link layer stats 4879 getWifiLinkLayerStats(false); 4880 4881 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4882 Message msg = new Message(); 4883 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4884 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4885 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4886 msg.obj = WifiStateMachine.this; 4887 mWifiP2pChannel.sendMessage(msg); 4888 } 4889 4890 void handlePostDhcpSetup() { 4891 /* Restore power save and suspend optimizations */ 4892 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4893 mWifiNative.setPowerSave(true); 4894 4895 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, 4896 WifiP2pServiceImpl.DISABLED); 4897 4898 // Set the coexistence mode back to its default value 4899 mWifiNative.setBluetoothCoexistenceMode( 4900 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4901 } 4902 4903 void connectScanningService() { 4904 if (mWifiScanner == null) { 4905 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4906 } 4907 } 4908 4909 private void handleIPv4Success(DhcpResults dhcpResults) { 4910 if (PDBG) { 4911 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 4912 logd("link address " + dhcpResults.ipAddress); 4913 } 4914 4915 Inet4Address addr; 4916 synchronized (mDhcpResultsLock) { 4917 mDhcpResults = dhcpResults; 4918 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4919 } 4920 4921 if (isRoaming()) { 4922 int previousAddress = mWifiInfo.getIpAddress(); 4923 int newAddress = NetworkUtils.inetAddressToInt(addr); 4924 if (previousAddress != newAddress) { 4925 logd("handleIPv4Success, roaming and address changed" + 4926 mWifiInfo + " got: " + addr); 4927 } 4928 } 4929 mWifiInfo.setInetAddress(addr); 4930 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4931 } 4932 4933 private void handleSuccessfulIpConfiguration() { 4934 mLastSignalLevel = -1; // Force update of signal strength 4935 WifiConfiguration c = getCurrentWifiConfiguration(); 4936 if (c != null) { 4937 // Reset IP failure tracking 4938 c.getNetworkSelectionStatus().clearDisableReasonCounter( 4939 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4940 4941 // Tell the framework whether the newly connected network is trusted or untrusted. 4942 updateCapabilities(c); 4943 } 4944 if (c != null) { 4945 ScanResult result = getCurrentScanResult(); 4946 if (result == null) { 4947 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4948 c.configKey()); 4949 } else { 4950 // Clear the per BSSID failure count 4951 result.numIpConfigFailures = 0; 4952 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4953 // any BSSID, even though it may already have a non zero ip failure count, 4954 // this will typically happen if the user walks away and come back to his arrea 4955 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4956 // in supplicant for a couple of hours or a day 4957 mWifiConfigStore.clearBssidBlacklist(); 4958 } 4959 } 4960 } 4961 4962 private void handleIPv4Failure() { 4963 // TODO: Move this to provisioning failure, not DHCP failure. 4964 // DHCPv4 failure is expected on an IPv6-only network. 4965 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 4966 if (DBG) { 4967 int count = -1; 4968 WifiConfiguration config = getCurrentWifiConfiguration(); 4969 if (config != null) { 4970 count = config.getNetworkSelectionStatus().getDisableReasonCounter( 4971 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4972 } 4973 log("DHCP failure count=" + count); 4974 } 4975 mWifiMetrics.endConnectionEvent( 4976 WifiMetrics.ConnectionEvent.LLF_NONE, 4977 WifiMetricsProto.ConnectionEvent.HLF_DHCP); 4978 synchronized(mDhcpResultsLock) { 4979 if (mDhcpResults != null) { 4980 mDhcpResults.clear(); 4981 } 4982 } 4983 if (PDBG) { 4984 logd("handleIPv4Failure"); 4985 } 4986 } 4987 4988 private void handleIpConfigurationLost() { 4989 mWifiInfo.setInetAddress(null); 4990 mWifiInfo.setMeteredHint(false); 4991 4992 mWifiConfigStore.updateNetworkSelectionStatus(mLastNetworkId, 4993 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4994 4995 /* DHCP times out after about 30 seconds, we do a 4996 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4997 */ 4998 mWifiNative.disconnect(); 4999 } 5000 5001 // TODO: De-duplicated this and handleIpConfigurationLost(). 5002 private void handleIpReachabilityLost() { 5003 mWifiInfo.setInetAddress(null); 5004 mWifiInfo.setMeteredHint(false); 5005 5006 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5007 5008 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5009 mWifiNative.disconnect(); 5010 } 5011 5012 private int convertFrequencyToChannelNumber(int frequency) { 5013 if (frequency >= 2412 && frequency <= 2484) { 5014 return (frequency -2412) / 5 + 1; 5015 } else if (frequency >= 5170 && frequency <=5825) { 5016 //DFS is included 5017 return (frequency -5170) / 5 + 34; 5018 } else { 5019 return 0; 5020 } 5021 } 5022 5023 private int chooseApChannel(int apBand) { 5024 int apChannel; 5025 int[] channel; 5026 5027 if (apBand == 0) { 5028 ArrayList<Integer> allowed2GChannel = 5029 mWifiApConfigStore.getAllowed2GChannel(); 5030 if (allowed2GChannel == null || allowed2GChannel.size() == 0) { 5031 //most safe channel to use 5032 if(DBG) { 5033 Log.d(TAG, "No specified 2G allowed channel list"); 5034 } 5035 apChannel = 6; 5036 } else { 5037 int index = mRandom.nextInt(allowed2GChannel.size()); 5038 apChannel = allowed2GChannel.get(index).intValue(); 5039 } 5040 } else { 5041 //5G without DFS 5042 channel = mWifiNative.getChannelsForBand(2); 5043 if (channel != null && channel.length > 0) { 5044 apChannel = channel[mRandom.nextInt(channel.length)]; 5045 apChannel = convertFrequencyToChannelNumber(apChannel); 5046 } else { 5047 Log.e(TAG, "SoftAp do not get available channel list"); 5048 apChannel = 0; 5049 } 5050 } 5051 5052 if(DBG) { 5053 Log.d(TAG, "SoftAp set on channel " + apChannel); 5054 } 5055 5056 return apChannel; 5057 } 5058 5059 /* SoftAP configuration */ 5060 private boolean enableSoftAp() { 5061 if (mWifiNative.getInterfaces() != 0) { 5062 if (!mWifiNative.toggleInterface(0)) { 5063 if (DBG) Log.e(TAG, "toggleInterface failed"); 5064 return false; 5065 } 5066 } else { 5067 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5068 } 5069 5070 try { 5071 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5072 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5073 } catch (Exception e) { 5074 Log.e(TAG, "Failed to reload AP firmware " + e); 5075 } 5076 5077 if (mWifiNative.startHal() == false) { 5078 /* starting HAL is optional */ 5079 Log.e(TAG, "Failed to start HAL"); 5080 } 5081 return true; 5082 } 5083 5084 /* Current design is to not set the config on a running hostapd but instead 5085 * stop and start tethering when user changes config on a running access point 5086 * 5087 * TODO: Add control channel setup through hostapd that allows changing config 5088 * on a running daemon 5089 */ 5090 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5091 // set channel 5092 final WifiConfiguration config = new WifiConfiguration(configuration); 5093 5094 if (DBG) { 5095 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5096 } 5097 5098 //We need HAL support to set country code and get available channel list, if HAL is 5099 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5100 if (mWifiNative.isHalStarted()) { 5101 //set country code through HAL Here 5102 String countryCode = getCurrentCountryCode(); 5103 5104 if (countryCode != null) { 5105 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5106 if (config.apBand != 0) { 5107 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5108 //countrycode is mandatory for 5GHz 5109 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5110 return; 5111 } 5112 } 5113 } else { 5114 if (config.apBand != 0) { 5115 //countrycode is mandatory for 5GHz 5116 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5117 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5118 return; 5119 } 5120 } 5121 5122 if (config.apChannel == 0) { 5123 config.apChannel = chooseApChannel(config.apBand); 5124 if (config.apChannel == 0) { 5125 if(mWifiNative.isGetChannelsForBandSupported()) { 5126 //fail to get available channel 5127 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5128 return; 5129 } else { 5130 //for some old device, wifiHal may not be supportedget valid channels are not 5131 //supported 5132 config.apBand = 0; 5133 config.apChannel = 6; 5134 } 5135 } 5136 } 5137 } else { 5138 //for some old device, wifiHal may not be supported 5139 config.apBand = 0; 5140 config.apChannel = 6; 5141 } 5142 // Start hostapd on a separate thread 5143 new Thread(new Runnable() { 5144 public void run() { 5145 try { 5146 mNwService.startAccessPoint(config, mInterfaceName); 5147 } catch (Exception e) { 5148 loge("Exception in softap start " + e); 5149 try { 5150 mNwService.stopAccessPoint(mInterfaceName); 5151 mNwService.startAccessPoint(config, mInterfaceName); 5152 } catch (Exception e1) { 5153 loge("Exception in softap re-start " + e1); 5154 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5155 return; 5156 } 5157 } 5158 if (DBG) log("Soft AP start successful"); 5159 sendMessage(CMD_START_AP_SUCCESS); 5160 } 5161 }).start(); 5162 } 5163 5164 private byte[] macAddressFromString(String macString) { 5165 String[] macBytes = macString.split(":"); 5166 if (macBytes.length != 6) { 5167 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5168 } 5169 byte[] mac = new byte[6]; 5170 for (int i = 0; i < macBytes.length; i++) { 5171 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5172 mac[i] = hexVal.byteValue(); 5173 } 5174 return mac; 5175 } 5176 5177 /* 5178 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5179 * so as to record MAC address of default gateway. 5180 **/ 5181 private String macAddressFromRoute(String ipAddress) { 5182 String macAddress = null; 5183 BufferedReader reader = null; 5184 try { 5185 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5186 5187 // Skip over the line bearing colum titles 5188 String line = reader.readLine(); 5189 5190 while ((line = reader.readLine()) != null) { 5191 String[] tokens = line.split("[ ]+"); 5192 if (tokens.length < 6) { 5193 continue; 5194 } 5195 5196 // ARP column format is 5197 // Address HWType HWAddress Flags Mask IFace 5198 String ip = tokens[0]; 5199 String mac = tokens[3]; 5200 5201 if (ipAddress.equals(ip)) { 5202 macAddress = mac; 5203 break; 5204 } 5205 } 5206 5207 if (macAddress == null) { 5208 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5209 "/proc/net/arp"); 5210 } 5211 5212 } catch (FileNotFoundException e) { 5213 loge("Could not open /proc/net/arp to lookup mac address"); 5214 } catch (IOException e) { 5215 loge("Could not read /proc/net/arp to lookup mac address"); 5216 } finally { 5217 try { 5218 if (reader != null) { 5219 reader.close(); 5220 } 5221 } catch (IOException e) { 5222 // Do nothing 5223 } 5224 } 5225 return macAddress; 5226 5227 } 5228 5229 private class WifiNetworkFactory extends NetworkFactory { 5230 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5231 super(l, c, TAG, f); 5232 } 5233 5234 @Override 5235 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5236 ++mConnectionRequests; 5237 } 5238 5239 @Override 5240 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5241 --mConnectionRequests; 5242 } 5243 5244 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5245 pw.println("mConnectionRequests " + mConnectionRequests); 5246 } 5247 5248 } 5249 5250 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5251 private int mUntrustedReqCount; 5252 5253 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5254 super(l, c, tag, f); 5255 } 5256 5257 @Override 5258 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5259 if (!networkRequest.networkCapabilities.hasCapability( 5260 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5261 if (++mUntrustedReqCount == 1) { 5262 setAllowUntrustedConnections(true); 5263 } 5264 } 5265 } 5266 5267 @Override 5268 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5269 if (!networkRequest.networkCapabilities.hasCapability( 5270 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5271 if (--mUntrustedReqCount == 0) { 5272 setAllowUntrustedConnections(false); 5273 } 5274 } 5275 } 5276 5277 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5278 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5279 } 5280 } 5281 5282 void maybeRegisterNetworkFactory() { 5283 if (mNetworkFactory == null) { 5284 checkAndSetConnectivityInstance(); 5285 if (mCm != null) { 5286 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5287 NETWORKTYPE, mNetworkCapabilitiesFilter); 5288 mNetworkFactory.setScoreFilter(60); 5289 mNetworkFactory.register(); 5290 5291 // We can't filter untrusted network in the capabilities filter because a trusted 5292 // network would still satisfy a request that accepts untrusted ones. 5293 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5294 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5295 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5296 mUntrustedNetworkFactory.register(); 5297 } 5298 } 5299 } 5300 5301 /******************************************************** 5302 * HSM states 5303 *******************************************************/ 5304 5305 class DefaultState extends State { 5306 @Override 5307 public boolean processMessage(Message message) { 5308 logStateAndMessage(message, this); 5309 5310 switch (message.what) { 5311 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5312 AsyncChannel ac = (AsyncChannel) message.obj; 5313 if (ac == mWifiP2pChannel) { 5314 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5315 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5316 } else { 5317 loge("WifiP2pService connection failure, error=" + message.arg1); 5318 } 5319 } else { 5320 loge("got HALF_CONNECTED for unknown channel"); 5321 } 5322 break; 5323 } 5324 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5325 AsyncChannel ac = (AsyncChannel) message.obj; 5326 if (ac == mWifiP2pChannel) { 5327 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5328 //TODO: Re-establish connection to state machine after a delay 5329 // mWifiP2pChannel.connect(mContext, getHandler(), 5330 // mWifiP2pManager.getMessenger()); 5331 } 5332 break; 5333 } 5334 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5335 mBluetoothConnectionActive = (message.arg1 != 5336 BluetoothAdapter.STATE_DISCONNECTED); 5337 break; 5338 /* Synchronous call returns */ 5339 case CMD_PING_SUPPLICANT: 5340 case CMD_ENABLE_NETWORK: 5341 case CMD_ADD_OR_UPDATE_NETWORK: 5342 case CMD_REMOVE_NETWORK: 5343 case CMD_SAVE_CONFIG: 5344 replyToMessage(message, message.what, FAILURE); 5345 break; 5346 case CMD_GET_CAPABILITY_FREQ: 5347 replyToMessage(message, message.what, null); 5348 break; 5349 case CMD_GET_CONFIGURED_NETWORKS: 5350 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5351 break; 5352 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5353 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5354 break; 5355 case CMD_ENABLE_RSSI_POLL: 5356 mEnableRssiPolling = (message.arg1 == 1); 5357 break; 5358 case CMD_SET_HIGH_PERF_MODE: 5359 if (message.arg1 == 1) { 5360 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5361 } else { 5362 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5363 } 5364 break; 5365 case CMD_BOOT_COMPLETED: 5366 maybeRegisterNetworkFactory(); 5367 break; 5368 case CMD_SCREEN_STATE_CHANGED: 5369 handleScreenStateChanged(message.arg1 != 0); 5370 break; 5371 /* Discard */ 5372 case CMD_START_SCAN: 5373 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5374 break; 5375 case CMD_START_SUPPLICANT: 5376 case CMD_STOP_SUPPLICANT: 5377 case CMD_STOP_SUPPLICANT_FAILED: 5378 case CMD_START_DRIVER: 5379 case CMD_STOP_DRIVER: 5380 case CMD_DRIVER_START_TIMED_OUT: 5381 case CMD_START_AP: 5382 case CMD_START_AP_SUCCESS: 5383 case CMD_START_AP_FAILURE: 5384 case CMD_STOP_AP: 5385 case CMD_TETHER_STATE_CHANGE: 5386 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5387 case CMD_DISCONNECT: 5388 case CMD_RECONNECT: 5389 case CMD_REASSOCIATE: 5390 case CMD_RELOAD_TLS_AND_RECONNECT: 5391 case WifiMonitor.SUP_CONNECTION_EVENT: 5392 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5393 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5394 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5395 case WifiMonitor.SCAN_RESULTS_EVENT: 5396 case WifiMonitor.SCAN_FAILED_EVENT: 5397 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5398 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5399 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5400 case WifiMonitor.WPS_OVERLAP_EVENT: 5401 case CMD_BLACKLIST_NETWORK: 5402 case CMD_CLEAR_BLACKLIST: 5403 case CMD_SET_OPERATIONAL_MODE: 5404 case CMD_SET_FREQUENCY_BAND: 5405 case CMD_RSSI_POLL: 5406 case CMD_ENABLE_ALL_NETWORKS: 5407 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5408 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5409 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5410 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5411 case CMD_DISABLE_P2P_RSP: 5412 case WifiMonitor.SUP_REQUEST_IDENTITY: 5413 case CMD_TEST_NETWORK_DISCONNECT: 5414 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5415 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5416 case CMD_TARGET_BSSID: 5417 case CMD_AUTO_CONNECT: 5418 case CMD_AUTO_ROAM: 5419 case CMD_AUTO_SAVE_NETWORK: 5420 case CMD_ASSOCIATED_BSSID: 5421 case CMD_UNWANTED_NETWORK: 5422 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5423 case CMD_ROAM_WATCHDOG_TIMER: 5424 case CMD_DISABLE_EPHEMERAL_NETWORK: 5425 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5426 case CMD_STARTED_PNO_DBG: 5427 case CMD_STARTED_GSCAN_DBG: 5428 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5429 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5430 break; 5431 case CMD_SET_COUNTRY_CODE: 5432 String country = (String) message.obj; 5433 final boolean persist = (message.arg2 == 1); 5434 final int sequence = message.arg1; 5435 if (sequence != mCountryCodeSequence.get()) { 5436 if (DBG) log("set country code ignored due to sequnce num"); 5437 break; 5438 } 5439 5440 if (persist) { 5441 country = country.toUpperCase(Locale.ROOT); 5442 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5443 Settings.Global.putString(mContext.getContentResolver(), 5444 Settings.Global.WIFI_COUNTRY_CODE, 5445 country == null ? "" : country); 5446 } 5447 5448 break; 5449 case CMD_SET_SUSPEND_OPT_ENABLED: 5450 if (message.arg1 == 1) { 5451 mSuspendWakeLock.release(); 5452 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5453 } else { 5454 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5455 } 5456 break; 5457 case WifiMonitor.DRIVER_HUNG_EVENT: 5458 setSupplicantRunning(false); 5459 setSupplicantRunning(true); 5460 break; 5461 case WifiManager.CONNECT_NETWORK: 5462 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5463 WifiManager.BUSY); 5464 break; 5465 case WifiManager.FORGET_NETWORK: 5466 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5467 WifiManager.BUSY); 5468 break; 5469 case WifiManager.SAVE_NETWORK: 5470 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5471 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5472 WifiManager.BUSY); 5473 break; 5474 case WifiManager.START_WPS: 5475 replyToMessage(message, WifiManager.WPS_FAILED, 5476 WifiManager.BUSY); 5477 break; 5478 case WifiManager.CANCEL_WPS: 5479 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5480 WifiManager.BUSY); 5481 break; 5482 case WifiManager.DISABLE_NETWORK: 5483 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5484 WifiManager.BUSY); 5485 break; 5486 case WifiManager.RSSI_PKTCNT_FETCH: 5487 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5488 WifiManager.BUSY); 5489 break; 5490 case CMD_GET_SUPPORTED_FEATURES: 5491 int featureSet = mWifiNative.getSupportedFeatureSet(); 5492 replyToMessage(message, message.what, featureSet); 5493 break; 5494 case CMD_FIRMWARE_ALERT: 5495 if (mWifiLogger != null) { 5496 byte[] buffer = (byte[])message.obj; 5497 mWifiLogger.captureAlertData(message.arg1, buffer); 5498 } 5499 break; 5500 case CMD_GET_LINK_LAYER_STATS: 5501 // Not supported hence reply with error message 5502 replyToMessage(message, message.what, null); 5503 break; 5504 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5505 NetworkInfo info = (NetworkInfo) message.obj; 5506 mP2pConnected.set(info.isConnected()); 5507 break; 5508 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5509 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5510 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5511 break; 5512 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5513 case CMD_UPDATE_LINKPROPERTIES: 5514 updateLinkProperties((LinkProperties) message.obj); 5515 break; 5516 case CMD_GET_MATCHING_CONFIG: 5517 replyToMessage(message, message.what); 5518 break; 5519 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5520 case CMD_IP_CONFIGURATION_LOST: 5521 case CMD_IP_REACHABILITY_LOST: 5522 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5523 break; 5524 case CMD_GET_CONNECTION_STATISTICS: 5525 replyToMessage(message, message.what, mWifiConnectionStatistics); 5526 break; 5527 case CMD_REMOVE_APP_CONFIGURATIONS: 5528 deferMessage(message); 5529 break; 5530 case CMD_REMOVE_USER_CONFIGURATIONS: 5531 deferMessage(message); 5532 break; 5533 case CMD_START_IP_PACKET_OFFLOAD: 5534 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5535 message.arg1, 5536 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5537 break; 5538 case CMD_STOP_IP_PACKET_OFFLOAD: 5539 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5540 message.arg1, 5541 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5542 break; 5543 case CMD_START_RSSI_MONITORING_OFFLOAD: 5544 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5545 break; 5546 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5547 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5548 break; 5549 case CMD_USER_SWITCH: 5550 mCurrentUserId = message.arg1; 5551 mWifiConfigStore.handleUserSwitch(); 5552 break; 5553 case CMD_ADD_PASSPOINT_MO: 5554 case CMD_MODIFY_PASSPOINT_MO: 5555 case CMD_QUERY_OSU_ICON: 5556 case CMD_MATCH_PROVIDER_NETWORK: 5557 /* reply with arg1 = 0 - it returns API failure to the calling app 5558 * (message.what is not looked at) 5559 */ 5560 replyToMessage(message, message.what); 5561 break; 5562 default: 5563 loge("Error! unhandled message" + message); 5564 break; 5565 } 5566 return HANDLED; 5567 } 5568 } 5569 5570 class InitialState extends State { 5571 @Override 5572 public void enter() { 5573 mWifiNative.stopHal(); 5574 mWifiNative.unloadDriver(); 5575 if (mWifiP2pChannel == null) { 5576 mWifiP2pChannel = new AsyncChannel(); 5577 mWifiP2pChannel.connect(mContext, getHandler(), 5578 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5579 } 5580 5581 if (mWifiApConfigStore == null) { 5582 mWifiApConfigStore = mFacade.makeApConfigStore(mContext); 5583 } 5584 5585 if (mWifiConfigStore.enableHalBasedPno.get()) { 5586 // make sure developer Settings are in sync with the config option 5587 mHalBasedPnoEnableInDevSettings = true; 5588 } 5589 } 5590 @Override 5591 public boolean processMessage(Message message) { 5592 logStateAndMessage(message, this); 5593 switch (message.what) { 5594 case CMD_START_SUPPLICANT: 5595 if (mWifiNative.loadDriver()) { 5596 try { 5597 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5598 } catch (Exception e) { 5599 loge("Failed to reload STA firmware " + e); 5600 // Continue 5601 } 5602 5603 try { 5604 // A runtime crash can leave the interface up and 5605 // IP addresses configured, and this affects 5606 // connectivity when supplicant starts up. 5607 // Ensure interface is down and we have no IP 5608 // addresses before a supplicant start. 5609 mNwService.setInterfaceDown(mInterfaceName); 5610 mNwService.clearInterfaceAddresses(mInterfaceName); 5611 5612 // Set privacy extensions 5613 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5614 5615 // IPv6 is enabled only as long as access point is connected since: 5616 // - IPv6 addresses and routes stick around after disconnection 5617 // - kernel is unaware when connected and fails to start IPv6 negotiation 5618 // - kernel can start autoconfiguration when 802.1x is not complete 5619 mNwService.disableIpv6(mInterfaceName); 5620 } catch (RemoteException re) { 5621 loge("Unable to change interface settings: " + re); 5622 } catch (IllegalStateException ie) { 5623 loge("Unable to change interface settings: " + ie); 5624 } 5625 5626 /* Stop a running supplicant after a runtime restart 5627 * Avoids issues with drivers that do not handle interface down 5628 * on a running supplicant properly. 5629 */ 5630 mWifiMonitor.killSupplicant(mP2pSupported); 5631 5632 if (mWifiNative.startHal() == false) { 5633 /* starting HAL is optional */ 5634 loge("Failed to start HAL"); 5635 } 5636 5637 if (mWifiNative.startSupplicant(mP2pSupported)) { 5638 setWifiState(WIFI_STATE_ENABLING); 5639 if (DBG) log("Supplicant start successful"); 5640 mWifiMonitor.startMonitoring(mInterfaceName); 5641 transitionTo(mSupplicantStartingState); 5642 } else { 5643 loge("Failed to start supplicant!"); 5644 } 5645 } else { 5646 loge("Failed to load driver"); 5647 } 5648 break; 5649 case CMD_START_AP: 5650 if (mWifiNative.loadDriver() == false) { 5651 loge("Failed to load driver for softap"); 5652 } else { 5653 if (enableSoftAp() == true) { 5654 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5655 transitionTo(mSoftApStartingState); 5656 } else { 5657 setWifiApState(WIFI_AP_STATE_FAILED, 5658 WifiManager.SAP_START_FAILURE_GENERAL); 5659 transitionTo(mInitialState); 5660 } 5661 } 5662 break; 5663 default: 5664 return NOT_HANDLED; 5665 } 5666 return HANDLED; 5667 } 5668 } 5669 5670 class SupplicantStartingState extends State { 5671 private void initializeWpsDetails() { 5672 String detail; 5673 detail = SystemProperties.get("ro.product.name", ""); 5674 if (!mWifiNative.setDeviceName(detail)) { 5675 loge("Failed to set device name " + detail); 5676 } 5677 detail = SystemProperties.get("ro.product.manufacturer", ""); 5678 if (!mWifiNative.setManufacturer(detail)) { 5679 loge("Failed to set manufacturer " + detail); 5680 } 5681 detail = SystemProperties.get("ro.product.model", ""); 5682 if (!mWifiNative.setModelName(detail)) { 5683 loge("Failed to set model name " + detail); 5684 } 5685 detail = SystemProperties.get("ro.product.model", ""); 5686 if (!mWifiNative.setModelNumber(detail)) { 5687 loge("Failed to set model number " + detail); 5688 } 5689 detail = SystemProperties.get("ro.serialno", ""); 5690 if (!mWifiNative.setSerialNumber(detail)) { 5691 loge("Failed to set serial number " + detail); 5692 } 5693 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5694 loge("Failed to set WPS config methods"); 5695 } 5696 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5697 loge("Failed to set primary device type " + mPrimaryDeviceType); 5698 } 5699 } 5700 5701 @Override 5702 public boolean processMessage(Message message) { 5703 logStateAndMessage(message, this); 5704 5705 switch(message.what) { 5706 case WifiMonitor.SUP_CONNECTION_EVENT: 5707 if (DBG) log("Supplicant connection established"); 5708 setWifiState(WIFI_STATE_ENABLED); 5709 mSupplicantRestartCount = 0; 5710 /* Reset the supplicant state to indicate the supplicant 5711 * state is not known at this time */ 5712 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5713 /* Initialize data structures */ 5714 mLastBssid = null; 5715 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5716 mLastSignalLevel = -1; 5717 5718 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5719 /* set frequency band of operation */ 5720 setFrequencyBand(); 5721 mWifiNative.enableSaveConfig(); 5722 mWifiConfigStore.loadAndEnableAllNetworks(); 5723 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5724 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5725 } 5726 initializeWpsDetails(); 5727 5728 sendSupplicantConnectionChangedBroadcast(true); 5729 transitionTo(mDriverStartedState); 5730 break; 5731 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5732 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5733 loge("Failed to setup control channel, restart supplicant"); 5734 mWifiMonitor.killSupplicant(mP2pSupported); 5735 transitionTo(mInitialState); 5736 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5737 } else { 5738 loge("Failed " + mSupplicantRestartCount + 5739 " times to start supplicant, unload driver"); 5740 mSupplicantRestartCount = 0; 5741 setWifiState(WIFI_STATE_UNKNOWN); 5742 transitionTo(mInitialState); 5743 } 5744 break; 5745 case CMD_START_SUPPLICANT: 5746 case CMD_STOP_SUPPLICANT: 5747 case CMD_START_AP: 5748 case CMD_STOP_AP: 5749 case CMD_START_DRIVER: 5750 case CMD_STOP_DRIVER: 5751 case CMD_SET_OPERATIONAL_MODE: 5752 case CMD_SET_COUNTRY_CODE: 5753 case CMD_SET_FREQUENCY_BAND: 5754 case CMD_START_PACKET_FILTERING: 5755 case CMD_STOP_PACKET_FILTERING: 5756 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5757 deferMessage(message); 5758 break; 5759 default: 5760 return NOT_HANDLED; 5761 } 5762 return HANDLED; 5763 } 5764 } 5765 5766 class SupplicantStartedState extends State { 5767 @Override 5768 public void enter() { 5769 /* Wifi is available as long as we have a connection to supplicant */ 5770 mNetworkInfo.setIsAvailable(true); 5771 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5772 5773 int defaultInterval = mContext.getResources().getInteger( 5774 R.integer.config_wifi_supplicant_scan_interval); 5775 5776 mSupplicantScanIntervalMs = mFacade.getLongSetting(mContext, 5777 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5778 defaultInterval); 5779 5780 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5781 mWifiNative.setExternalSim(true); 5782 5783 /* turn on use of DFS channels */ 5784 mWifiNative.setDfsFlag(true); 5785 5786 /* set country code */ 5787 initializeCountryCode(); 5788 5789 setRandomMacOui(); 5790 mWifiNative.enableAutoConnect(false); 5791 } 5792 5793 @Override 5794 public boolean processMessage(Message message) { 5795 logStateAndMessage(message, this); 5796 5797 switch(message.what) { 5798 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5799 if (mP2pSupported) { 5800 transitionTo(mWaitForP2pDisableState); 5801 } else { 5802 transitionTo(mSupplicantStoppingState); 5803 } 5804 break; 5805 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5806 loge("Connection lost, restart supplicant"); 5807 handleSupplicantConnectionLoss(true); 5808 handleNetworkDisconnect(); 5809 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5810 if (mP2pSupported) { 5811 transitionTo(mWaitForP2pDisableState); 5812 } else { 5813 transitionTo(mInitialState); 5814 } 5815 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5816 break; 5817 case WifiMonitor.SCAN_RESULTS_EVENT: 5818 case WifiMonitor.SCAN_FAILED_EVENT: 5819 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5820 noteScanEnd(); 5821 setScanResults(); 5822 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5823 /* Just updated results from full scan, let apps know about this */ 5824 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5825 sendScanResultsAvailableBroadcast(scanSucceeded); 5826 } 5827 mSendScanResultsBroadcast = false; 5828 mIsScanOngoing = false; 5829 mIsFullScanOngoing = false; 5830 if (mBufferedScanMsg.size() > 0) 5831 sendMessage(mBufferedScanMsg.remove()); 5832 break; 5833 case CMD_PING_SUPPLICANT: 5834 boolean ok = mWifiNative.ping(); 5835 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5836 break; 5837 case CMD_GET_CAPABILITY_FREQ: 5838 String freqs = mWifiNative.getFreqCapability(); 5839 replyToMessage(message, message.what, freqs); 5840 break; 5841 case CMD_START_AP: 5842 /* Cannot start soft AP while in client mode */ 5843 loge("Failed to start soft AP with a running supplicant"); 5844 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5845 break; 5846 case CMD_SET_OPERATIONAL_MODE: 5847 mOperationalMode = message.arg1; 5848 mWifiConfigStore. 5849 setAndEnableLastSelectedConfiguration( 5850 WifiConfiguration.INVALID_NETWORK_ID); 5851 break; 5852 case CMD_TARGET_BSSID: 5853 // Trying to associate to this BSSID 5854 if (message.obj != null) { 5855 mTargetRoamBSSID = (String) message.obj; 5856 } 5857 break; 5858 case CMD_GET_LINK_LAYER_STATS: 5859 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5860 if (stats == null) { 5861 // When firmware doesnt support link layer stats, return an empty object 5862 stats = new WifiLinkLayerStats(); 5863 } 5864 replyToMessage(message, message.what, stats); 5865 break; 5866 case CMD_SET_COUNTRY_CODE: 5867 String country = (String) message.obj; 5868 final boolean persist = (message.arg2 == 1); 5869 final int sequence = message.arg1; 5870 if (sequence != mCountryCodeSequence.get()) { 5871 if (DBG) log("set country code ignored due to sequnce num"); 5872 break; 5873 } 5874 5875 country = country.toUpperCase(Locale.ROOT); 5876 5877 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5878 5879 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 5880 if (mWifiNative.setCountryCode(country)) { 5881 mDriverSetCountryCode = country; 5882 } else { 5883 loge("Failed to set country code " + country); 5884 } 5885 } 5886 5887 if (persist) { 5888 Settings.Global.putString(mContext.getContentResolver(), 5889 Settings.Global.WIFI_COUNTRY_CODE, 5890 country == null ? "" : country); 5891 } 5892 5893 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5894 break; 5895 case CMD_RESET_SIM_NETWORKS: 5896 log("resetting EAP-SIM/AKA/AKA' networks since SIM was removed"); 5897 mWifiConfigStore.resetSimNetworks(); 5898 break; 5899 default: 5900 return NOT_HANDLED; 5901 } 5902 return HANDLED; 5903 } 5904 5905 @Override 5906 public void exit() { 5907 mNetworkInfo.setIsAvailable(false); 5908 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5909 } 5910 } 5911 5912 class SupplicantStoppingState extends State { 5913 @Override 5914 public void enter() { 5915 /* Send any reset commands to supplicant before shutting it down */ 5916 handleNetworkDisconnect(); 5917 5918 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5919 if (suppState == null) suppState = "unknown"; 5920 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5921 if (p2pSuppState == null) p2pSuppState = "unknown"; 5922 5923 logd("SupplicantStoppingState: stopSupplicant " 5924 + " init.svc.wpa_supplicant=" + suppState 5925 + " init.svc.p2p_supplicant=" + p2pSuppState); 5926 mWifiMonitor.stopSupplicant(); 5927 5928 /* Send ourselves a delayed message to indicate failure after a wait time */ 5929 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5930 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5931 setWifiState(WIFI_STATE_DISABLING); 5932 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5933 } 5934 @Override 5935 public boolean processMessage(Message message) { 5936 logStateAndMessage(message, this); 5937 5938 switch(message.what) { 5939 case WifiMonitor.SUP_CONNECTION_EVENT: 5940 loge("Supplicant connection received while stopping"); 5941 break; 5942 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5943 if (DBG) log("Supplicant connection lost"); 5944 handleSupplicantConnectionLoss(false); 5945 transitionTo(mInitialState); 5946 break; 5947 case CMD_STOP_SUPPLICANT_FAILED: 5948 if (message.arg1 == mSupplicantStopFailureToken) { 5949 loge("Timed out on a supplicant stop, kill and proceed"); 5950 handleSupplicantConnectionLoss(true); 5951 transitionTo(mInitialState); 5952 } 5953 break; 5954 case CMD_START_SUPPLICANT: 5955 case CMD_STOP_SUPPLICANT: 5956 case CMD_START_AP: 5957 case CMD_STOP_AP: 5958 case CMD_START_DRIVER: 5959 case CMD_STOP_DRIVER: 5960 case CMD_SET_OPERATIONAL_MODE: 5961 case CMD_SET_COUNTRY_CODE: 5962 case CMD_SET_FREQUENCY_BAND: 5963 case CMD_START_PACKET_FILTERING: 5964 case CMD_STOP_PACKET_FILTERING: 5965 deferMessage(message); 5966 break; 5967 default: 5968 return NOT_HANDLED; 5969 } 5970 return HANDLED; 5971 } 5972 } 5973 5974 class DriverStartingState extends State { 5975 private int mTries; 5976 @Override 5977 public void enter() { 5978 mTries = 1; 5979 /* Send ourselves a delayed message to start driver a second time */ 5980 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5981 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5982 } 5983 @Override 5984 public boolean processMessage(Message message) { 5985 logStateAndMessage(message, this); 5986 5987 switch(message.what) { 5988 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5989 SupplicantState state = handleSupplicantStateChange(message); 5990 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5991 * a state that indicates driver has started, it is ready to 5992 * receive driver commands 5993 */ 5994 if (SupplicantState.isDriverActive(state)) { 5995 transitionTo(mDriverStartedState); 5996 } 5997 break; 5998 case CMD_DRIVER_START_TIMED_OUT: 5999 if (message.arg1 == mDriverStartToken) { 6000 if (mTries >= 2) { 6001 loge("Failed to start driver after " + mTries); 6002 transitionTo(mDriverStoppedState); 6003 } else { 6004 loge("Driver start failed, retrying"); 6005 mWakeLock.acquire(); 6006 mWifiNative.startDriver(); 6007 mWakeLock.release(); 6008 6009 ++mTries; 6010 /* Send ourselves a delayed message to start driver again */ 6011 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6012 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6013 } 6014 } 6015 break; 6016 /* Queue driver commands & connection events */ 6017 case CMD_START_DRIVER: 6018 case CMD_STOP_DRIVER: 6019 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6020 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6021 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6022 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6023 case WifiMonitor.WPS_OVERLAP_EVENT: 6024 case CMD_SET_COUNTRY_CODE: 6025 case CMD_SET_FREQUENCY_BAND: 6026 case CMD_START_PACKET_FILTERING: 6027 case CMD_STOP_PACKET_FILTERING: 6028 case CMD_START_SCAN: 6029 case CMD_DISCONNECT: 6030 case CMD_REASSOCIATE: 6031 case CMD_RECONNECT: 6032 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6033 deferMessage(message); 6034 break; 6035 case WifiMonitor.SCAN_RESULTS_EVENT: 6036 case WifiMonitor.SCAN_FAILED_EVENT: 6037 // Loose scan results obtained in Driver Starting state, they can only confuse 6038 // the state machine 6039 break; 6040 default: 6041 return NOT_HANDLED; 6042 } 6043 return HANDLED; 6044 } 6045 } 6046 6047 class DriverStartedState extends State { 6048 @Override 6049 public void enter() { 6050 6051 if (PDBG) { 6052 logd("DriverStartedState enter"); 6053 } 6054 6055 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6056 mIsRunning = true; 6057 updateBatteryWorkSource(null); 6058 /** 6059 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6060 * When this mode is on, some of the low-level scan parameters used by the 6061 * driver are changed to reduce interference with bluetooth 6062 */ 6063 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6064 /* initialize network state */ 6065 setNetworkDetailedState(DetailedState.DISCONNECTED); 6066 6067 /* Remove any filtering on Multicast v6 at start */ 6068 mWifiNative.stopFilteringMulticastV6Packets(); 6069 6070 /* Reset Multicast v4 filtering state */ 6071 if (mFilteringMulticastV4Packets.get()) { 6072 mWifiNative.startFilteringMulticastV4Packets(); 6073 } else { 6074 mWifiNative.stopFilteringMulticastV4Packets(); 6075 } 6076 6077 if (mOperationalMode != CONNECT_MODE) { 6078 mWifiNative.disconnect(); 6079 mWifiConfigStore.disableAllNetworks(); 6080 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6081 setWifiState(WIFI_STATE_DISABLED); 6082 } 6083 transitionTo(mScanModeState); 6084 } else { 6085 6086 // Status pulls in the current supplicant state and network connection state 6087 // events over the monitor connection. This helps framework sync up with 6088 // current supplicant state 6089 // TODO: actually check th supplicant status string and make sure the supplicant 6090 // is in disconnecte4d state. 6091 mWifiNative.status(); 6092 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6093 transitionTo(mDisconnectedState); 6094 transitionTo(mDisconnectedState); 6095 } 6096 6097 // We may have missed screen update at boot 6098 if (mScreenBroadcastReceived.get() == false) { 6099 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6100 Context.POWER_SERVICE); 6101 handleScreenStateChanged(powerManager.isScreenOn()); 6102 } else { 6103 // Set the right suspend mode settings 6104 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6105 && mUserWantsSuspendOpt.get()); 6106 } 6107 mWifiNative.setPowerSave(true); 6108 6109 if (mP2pSupported) { 6110 if (mOperationalMode == CONNECT_MODE) { 6111 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6112 } else { 6113 // P2P statemachine starts in disabled state, and is not enabled until 6114 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6115 // keep it disabled. 6116 } 6117 } 6118 6119 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6120 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6121 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6122 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6123 6124 mHalFeatureSet = mWifiNative.getSupportedFeatureSet(); 6125 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6126 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6127 mHalBasedPnoDriverSupported = true; 6128 } 6129 6130 // Enable link layer stats gathering 6131 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6132 6133 if (PDBG) { 6134 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6135 + " feature=" + mHalFeatureSet); 6136 } 6137 } 6138 6139 @Override 6140 public boolean processMessage(Message message) { 6141 logStateAndMessage(message, this); 6142 6143 switch(message.what) { 6144 case CMD_START_SCAN: 6145 handleScanRequest(message); 6146 break; 6147 case CMD_SET_FREQUENCY_BAND: 6148 int band = message.arg1; 6149 if (DBG) log("set frequency band " + band); 6150 if (mWifiNative.setBand(band)) { 6151 6152 if (PDBG) logd("did set frequency band " + band); 6153 6154 mFrequencyBand.set(band); 6155 // Flush old data - like scan results 6156 mWifiNative.bssFlush(); 6157 6158 if (PDBG) logd("done set frequency band " + band); 6159 6160 } else { 6161 loge("Failed to set frequency band " + band); 6162 } 6163 break; 6164 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6165 mBluetoothConnectionActive = (message.arg1 != 6166 BluetoothAdapter.STATE_DISCONNECTED); 6167 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6168 break; 6169 case CMD_STOP_DRIVER: 6170 int mode = message.arg1; 6171 6172 log("stop driver"); 6173 mWifiConfigStore.disableAllNetworks(); 6174 6175 if (getCurrentState() != mDisconnectedState) { 6176 mWifiNative.disconnect(); 6177 handleNetworkDisconnect(); 6178 } 6179 mWakeLock.acquire(); 6180 mWifiNative.stopDriver(); 6181 mWakeLock.release(); 6182 if (mP2pSupported) { 6183 transitionTo(mWaitForP2pDisableState); 6184 } else { 6185 transitionTo(mDriverStoppingState); 6186 } 6187 break; 6188 case CMD_START_DRIVER: 6189 if (mOperationalMode == CONNECT_MODE) { 6190 mWifiConfigStore.enableAllNetworks(); 6191 } 6192 break; 6193 case CMD_START_PACKET_FILTERING: 6194 if (message.arg1 == MULTICAST_V6) { 6195 mWifiNative.startFilteringMulticastV6Packets(); 6196 } else if (message.arg1 == MULTICAST_V4) { 6197 mWifiNative.startFilteringMulticastV4Packets(); 6198 } else { 6199 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6200 } 6201 break; 6202 case CMD_STOP_PACKET_FILTERING: 6203 if (message.arg1 == MULTICAST_V6) { 6204 mWifiNative.stopFilteringMulticastV6Packets(); 6205 } else if (message.arg1 == MULTICAST_V4) { 6206 mWifiNative.stopFilteringMulticastV4Packets(); 6207 } else { 6208 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6209 } 6210 break; 6211 case CMD_SET_SUSPEND_OPT_ENABLED: 6212 if (message.arg1 == 1) { 6213 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6214 mSuspendWakeLock.release(); 6215 } else { 6216 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6217 } 6218 break; 6219 case CMD_SET_HIGH_PERF_MODE: 6220 if (message.arg1 == 1) { 6221 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6222 } else { 6223 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6224 } 6225 break; 6226 case CMD_ENABLE_TDLS: 6227 if (message.obj != null) { 6228 String remoteAddress = (String) message.obj; 6229 boolean enable = (message.arg1 == 1); 6230 mWifiNative.startTdls(remoteAddress, enable); 6231 } 6232 break; 6233 case WifiMonitor.ANQP_DONE_EVENT: 6234 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6235 break; 6236 case CMD_STOP_IP_PACKET_OFFLOAD: { 6237 int slot = message.arg1; 6238 int ret = stopWifiIPPacketOffload(slot); 6239 if (mNetworkAgent != null) { 6240 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6241 } 6242 break; 6243 } 6244 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6245 mWifiConfigStore.notifyIconReceived((IconEvent) message.obj); 6246 break; 6247 case WifiMonitor.HS20_REMEDIATION_EVENT: 6248 mWifiConfigStore.wnmFrameReceived((WnmData) message.obj); 6249 break; 6250 default: 6251 return NOT_HANDLED; 6252 } 6253 return HANDLED; 6254 } 6255 @Override 6256 public void exit() { 6257 6258 mWifiLogger.stopLogging(); 6259 6260 mIsRunning = false; 6261 updateBatteryWorkSource(null); 6262 mScanResults = new ArrayList<>(); 6263 6264 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6265 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6266 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6267 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6268 noteScanEnd(); // wrap up any pending request. 6269 mBufferedScanMsg.clear(); 6270 } 6271 } 6272 6273 class WaitForP2pDisableState extends State { 6274 private State mTransitionToState; 6275 @Override 6276 public void enter() { 6277 switch (getCurrentMessage().what) { 6278 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6279 mTransitionToState = mInitialState; 6280 break; 6281 case CMD_STOP_DRIVER: 6282 mTransitionToState = mDriverStoppingState; 6283 break; 6284 case CMD_STOP_SUPPLICANT: 6285 mTransitionToState = mSupplicantStoppingState; 6286 break; 6287 default: 6288 mTransitionToState = mDriverStoppingState; 6289 break; 6290 } 6291 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6292 } 6293 @Override 6294 public boolean processMessage(Message message) { 6295 logStateAndMessage(message, this); 6296 6297 switch(message.what) { 6298 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6299 transitionTo(mTransitionToState); 6300 break; 6301 /* Defer wifi start/shut and driver commands */ 6302 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6303 case CMD_START_SUPPLICANT: 6304 case CMD_STOP_SUPPLICANT: 6305 case CMD_START_AP: 6306 case CMD_STOP_AP: 6307 case CMD_START_DRIVER: 6308 case CMD_STOP_DRIVER: 6309 case CMD_SET_OPERATIONAL_MODE: 6310 case CMD_SET_COUNTRY_CODE: 6311 case CMD_SET_FREQUENCY_BAND: 6312 case CMD_START_PACKET_FILTERING: 6313 case CMD_STOP_PACKET_FILTERING: 6314 case CMD_START_SCAN: 6315 case CMD_DISCONNECT: 6316 case CMD_REASSOCIATE: 6317 case CMD_RECONNECT: 6318 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6319 deferMessage(message); 6320 break; 6321 default: 6322 return NOT_HANDLED; 6323 } 6324 return HANDLED; 6325 } 6326 } 6327 6328 class DriverStoppingState extends State { 6329 @Override 6330 public boolean processMessage(Message message) { 6331 logStateAndMessage(message, this); 6332 6333 switch(message.what) { 6334 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6335 SupplicantState state = handleSupplicantStateChange(message); 6336 if (state == SupplicantState.INTERFACE_DISABLED) { 6337 transitionTo(mDriverStoppedState); 6338 } 6339 break; 6340 /* Queue driver commands */ 6341 case CMD_START_DRIVER: 6342 case CMD_STOP_DRIVER: 6343 case CMD_SET_COUNTRY_CODE: 6344 case CMD_SET_FREQUENCY_BAND: 6345 case CMD_START_PACKET_FILTERING: 6346 case CMD_STOP_PACKET_FILTERING: 6347 case CMD_START_SCAN: 6348 case CMD_DISCONNECT: 6349 case CMD_REASSOCIATE: 6350 case CMD_RECONNECT: 6351 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6352 deferMessage(message); 6353 break; 6354 default: 6355 return NOT_HANDLED; 6356 } 6357 return HANDLED; 6358 } 6359 } 6360 6361 class DriverStoppedState extends State { 6362 @Override 6363 public boolean processMessage(Message message) { 6364 logStateAndMessage(message, this); 6365 switch (message.what) { 6366 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6367 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6368 SupplicantState state = stateChangeResult.state; 6369 // A WEXT bug means that we can be back to driver started state 6370 // unexpectedly 6371 if (SupplicantState.isDriverActive(state)) { 6372 transitionTo(mDriverStartedState); 6373 } 6374 break; 6375 case CMD_START_DRIVER: 6376 mWakeLock.acquire(); 6377 mWifiNative.startDriver(); 6378 mWakeLock.release(); 6379 transitionTo(mDriverStartingState); 6380 break; 6381 default: 6382 return NOT_HANDLED; 6383 } 6384 return HANDLED; 6385 } 6386 } 6387 6388 class ScanModeState extends State { 6389 private int mLastOperationMode; 6390 @Override 6391 public void enter() { 6392 mLastOperationMode = mOperationalMode; 6393 } 6394 @Override 6395 public boolean processMessage(Message message) { 6396 logStateAndMessage(message, this); 6397 6398 switch(message.what) { 6399 case CMD_SET_OPERATIONAL_MODE: 6400 if (message.arg1 == CONNECT_MODE) { 6401 6402 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6403 setWifiState(WIFI_STATE_ENABLED); 6404 // Load and re-enable networks when going back to enabled state 6405 // This is essential for networks to show up after restore 6406 mWifiConfigStore.loadAndEnableAllNetworks(); 6407 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6408 } else { 6409 mWifiConfigStore.enableAllNetworks(); 6410 } 6411 // start a scan to trigger Quality network selection 6412 startScan(ENABLE_WIFI, 0, null, null); 6413 6414 // Loose last selection choice since user toggled WiFi 6415 mWifiConfigStore. 6416 setAndEnableLastSelectedConfiguration( 6417 WifiConfiguration.INVALID_NETWORK_ID); 6418 6419 mOperationalMode = CONNECT_MODE; 6420 transitionTo(mDisconnectedState); 6421 } else { 6422 // Nothing to do 6423 return HANDLED; 6424 } 6425 break; 6426 // Handle scan. All the connection related commands are 6427 // handled only in ConnectModeState 6428 case CMD_START_SCAN: 6429 handleScanRequest(message); 6430 break; 6431 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6432 SupplicantState state = handleSupplicantStateChange(message); 6433 if(DBG) log("SupplicantState= " + state); 6434 break; 6435 default: 6436 return NOT_HANDLED; 6437 } 6438 return HANDLED; 6439 } 6440 } 6441 6442 6443 String smToString(Message message) { 6444 return smToString(message.what); 6445 } 6446 6447 String smToString(int what) { 6448 String s = "unknown"; 6449 switch (what) { 6450 case WifiMonitor.DRIVER_HUNG_EVENT: 6451 s = "DRIVER_HUNG_EVENT"; 6452 break; 6453 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6454 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6455 break; 6456 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6457 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6458 break; 6459 case CMD_SET_FREQUENCY_BAND: 6460 s = "CMD_SET_FREQUENCY_BAND"; 6461 break; 6462 case CMD_DELAYED_NETWORK_DISCONNECT: 6463 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6464 break; 6465 case CMD_TEST_NETWORK_DISCONNECT: 6466 s = "CMD_TEST_NETWORK_DISCONNECT"; 6467 break; 6468 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6469 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6470 break; 6471 case CMD_DISABLE_EPHEMERAL_NETWORK: 6472 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6473 break; 6474 case CMD_START_DRIVER: 6475 s = "CMD_START_DRIVER"; 6476 break; 6477 case CMD_STOP_DRIVER: 6478 s = "CMD_STOP_DRIVER"; 6479 break; 6480 case CMD_STOP_SUPPLICANT: 6481 s = "CMD_STOP_SUPPLICANT"; 6482 break; 6483 case CMD_STOP_SUPPLICANT_FAILED: 6484 s = "CMD_STOP_SUPPLICANT_FAILED"; 6485 break; 6486 case CMD_START_SUPPLICANT: 6487 s = "CMD_START_SUPPLICANT"; 6488 break; 6489 case CMD_TETHER_STATE_CHANGE: 6490 s = "CMD_TETHER_STATE_CHANGE"; 6491 break; 6492 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6493 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6494 break; 6495 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6496 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6497 break; 6498 case CMD_ADD_OR_UPDATE_NETWORK: 6499 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6500 break; 6501 case CMD_REMOVE_NETWORK: 6502 s = "CMD_REMOVE_NETWORK"; 6503 break; 6504 case CMD_ENABLE_NETWORK: 6505 s = "CMD_ENABLE_NETWORK"; 6506 break; 6507 case CMD_ENABLE_ALL_NETWORKS: 6508 s = "CMD_ENABLE_ALL_NETWORKS"; 6509 break; 6510 case CMD_AUTO_CONNECT: 6511 s = "CMD_AUTO_CONNECT"; 6512 break; 6513 case CMD_AUTO_ROAM: 6514 s = "CMD_AUTO_ROAM"; 6515 break; 6516 case CMD_AUTO_SAVE_NETWORK: 6517 s = "CMD_AUTO_SAVE_NETWORK"; 6518 break; 6519 case CMD_BOOT_COMPLETED: 6520 s = "CMD_BOOT_COMPLETED"; 6521 break; 6522 case DhcpStateMachine.CMD_START_DHCP: 6523 s = "CMD_START_DHCP"; 6524 break; 6525 case DhcpStateMachine.CMD_STOP_DHCP: 6526 s = "CMD_STOP_DHCP"; 6527 break; 6528 case DhcpStateMachine.CMD_RENEW_DHCP: 6529 s = "CMD_RENEW_DHCP"; 6530 break; 6531 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6532 s = "CMD_PRE_DHCP_ACTION"; 6533 break; 6534 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6535 s = "CMD_POST_DHCP_ACTION"; 6536 break; 6537 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6538 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6539 break; 6540 case DhcpStateMachine.CMD_ON_QUIT: 6541 s = "CMD_ON_QUIT"; 6542 break; 6543 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6544 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6545 break; 6546 case WifiManager.DISABLE_NETWORK: 6547 s = "WifiManager.DISABLE_NETWORK"; 6548 break; 6549 case CMD_BLACKLIST_NETWORK: 6550 s = "CMD_BLACKLIST_NETWORK"; 6551 break; 6552 case CMD_CLEAR_BLACKLIST: 6553 s = "CMD_CLEAR_BLACKLIST"; 6554 break; 6555 case CMD_SAVE_CONFIG: 6556 s = "CMD_SAVE_CONFIG"; 6557 break; 6558 case CMD_GET_CONFIGURED_NETWORKS: 6559 s = "CMD_GET_CONFIGURED_NETWORKS"; 6560 break; 6561 case CMD_GET_SUPPORTED_FEATURES: 6562 s = "CMD_GET_SUPPORTED_FEATURES"; 6563 break; 6564 case CMD_UNWANTED_NETWORK: 6565 s = "CMD_UNWANTED_NETWORK"; 6566 break; 6567 case CMD_NETWORK_STATUS: 6568 s = "CMD_NETWORK_STATUS"; 6569 break; 6570 case CMD_GET_LINK_LAYER_STATS: 6571 s = "CMD_GET_LINK_LAYER_STATS"; 6572 break; 6573 case CMD_GET_MATCHING_CONFIG: 6574 s = "CMD_GET_MATCHING_CONFIG"; 6575 break; 6576 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6577 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6578 break; 6579 case CMD_DISCONNECT: 6580 s = "CMD_DISCONNECT"; 6581 break; 6582 case CMD_RECONNECT: 6583 s = "CMD_RECONNECT"; 6584 break; 6585 case CMD_REASSOCIATE: 6586 s = "CMD_REASSOCIATE"; 6587 break; 6588 case CMD_GET_CONNECTION_STATISTICS: 6589 s = "CMD_GET_CONNECTION_STATISTICS"; 6590 break; 6591 case CMD_SET_HIGH_PERF_MODE: 6592 s = "CMD_SET_HIGH_PERF_MODE"; 6593 break; 6594 case CMD_SET_COUNTRY_CODE: 6595 s = "CMD_SET_COUNTRY_CODE"; 6596 break; 6597 case CMD_ENABLE_RSSI_POLL: 6598 s = "CMD_ENABLE_RSSI_POLL"; 6599 break; 6600 case CMD_RSSI_POLL: 6601 s = "CMD_RSSI_POLL"; 6602 break; 6603 case CMD_START_PACKET_FILTERING: 6604 s = "CMD_START_PACKET_FILTERING"; 6605 break; 6606 case CMD_STOP_PACKET_FILTERING: 6607 s = "CMD_STOP_PACKET_FILTERING"; 6608 break; 6609 case CMD_SET_SUSPEND_OPT_ENABLED: 6610 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6611 break; 6612 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6613 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6614 break; 6615 case CMD_UPDATE_LINKPROPERTIES: 6616 s = "CMD_UPDATE_LINKPROPERTIES"; 6617 break; 6618 case CMD_RELOAD_TLS_AND_RECONNECT: 6619 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6620 break; 6621 case WifiManager.CONNECT_NETWORK: 6622 s = "CONNECT_NETWORK"; 6623 break; 6624 case WifiManager.SAVE_NETWORK: 6625 s = "SAVE_NETWORK"; 6626 break; 6627 case WifiManager.FORGET_NETWORK: 6628 s = "FORGET_NETWORK"; 6629 break; 6630 case WifiMonitor.SUP_CONNECTION_EVENT: 6631 s = "SUP_CONNECTION_EVENT"; 6632 break; 6633 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6634 s = "SUP_DISCONNECTION_EVENT"; 6635 break; 6636 case WifiMonitor.SCAN_RESULTS_EVENT: 6637 s = "SCAN_RESULTS_EVENT"; 6638 break; 6639 case WifiMonitor.SCAN_FAILED_EVENT: 6640 s = "SCAN_FAILED_EVENT"; 6641 break; 6642 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6643 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6644 break; 6645 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6646 s = "AUTHENTICATION_FAILURE_EVENT"; 6647 break; 6648 case WifiMonitor.SSID_TEMP_DISABLED: 6649 s = "SSID_TEMP_DISABLED"; 6650 break; 6651 case WifiMonitor.SSID_REENABLED: 6652 s = "SSID_REENABLED"; 6653 break; 6654 case WifiMonitor.WPS_SUCCESS_EVENT: 6655 s = "WPS_SUCCESS_EVENT"; 6656 break; 6657 case WifiMonitor.WPS_FAIL_EVENT: 6658 s = "WPS_FAIL_EVENT"; 6659 break; 6660 case WifiMonitor.SUP_REQUEST_IDENTITY: 6661 s = "SUP_REQUEST_IDENTITY"; 6662 break; 6663 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6664 s = "NETWORK_CONNECTION_EVENT"; 6665 break; 6666 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6667 s = "NETWORK_DISCONNECTION_EVENT"; 6668 break; 6669 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6670 s = "ASSOCIATION_REJECTION_EVENT"; 6671 break; 6672 case WifiMonitor.ANQP_DONE_EVENT: 6673 s = "WifiMonitor.ANQP_DONE_EVENT"; 6674 break; 6675 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6676 s = "WifiMonitor.RX_HS20_ANQP_ICON_EVENT"; 6677 break; 6678 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6679 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6680 break; 6681 case WifiMonitor.HS20_REMEDIATION_EVENT: 6682 s = "WifiMonitor.HS20_REMEDIATION_EVENT"; 6683 break; 6684 case WifiMonitor.GAS_QUERY_START_EVENT: 6685 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6686 break; 6687 case CMD_SET_OPERATIONAL_MODE: 6688 s = "CMD_SET_OPERATIONAL_MODE"; 6689 break; 6690 case CMD_START_SCAN: 6691 s = "CMD_START_SCAN"; 6692 break; 6693 case CMD_DISABLE_P2P_RSP: 6694 s = "CMD_DISABLE_P2P_RSP"; 6695 break; 6696 case CMD_DISABLE_P2P_REQ: 6697 s = "CMD_DISABLE_P2P_REQ"; 6698 break; 6699 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6700 s = "GROUP_CREATING_TIMED_OUT"; 6701 break; 6702 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6703 s = "P2P_CONNECTION_CHANGED"; 6704 break; 6705 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6706 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6707 break; 6708 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6709 s = "P2P.SET_MIRACAST_MODE"; 6710 break; 6711 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6712 s = "P2P.BLOCK_DISCOVERY"; 6713 break; 6714 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6715 s = "P2P.SET_COUNTRY_CODE"; 6716 break; 6717 case WifiManager.CANCEL_WPS: 6718 s = "CANCEL_WPS"; 6719 break; 6720 case WifiManager.CANCEL_WPS_FAILED: 6721 s = "CANCEL_WPS_FAILED"; 6722 break; 6723 case WifiManager.CANCEL_WPS_SUCCEDED: 6724 s = "CANCEL_WPS_SUCCEDED"; 6725 break; 6726 case WifiManager.START_WPS: 6727 s = "START_WPS"; 6728 break; 6729 case WifiManager.START_WPS_SUCCEEDED: 6730 s = "START_WPS_SUCCEEDED"; 6731 break; 6732 case WifiManager.WPS_FAILED: 6733 s = "WPS_FAILED"; 6734 break; 6735 case WifiManager.WPS_COMPLETED: 6736 s = "WPS_COMPLETED"; 6737 break; 6738 case WifiManager.RSSI_PKTCNT_FETCH: 6739 s = "RSSI_PKTCNT_FETCH"; 6740 break; 6741 case CMD_IP_CONFIGURATION_LOST: 6742 s = "CMD_IP_CONFIGURATION_LOST"; 6743 break; 6744 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6745 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6746 break; 6747 case CMD_IP_REACHABILITY_LOST: 6748 s = "CMD_IP_REACHABILITY_LOST"; 6749 break; 6750 case CMD_STATIC_IP_SUCCESS: 6751 s = "CMD_STATIC_IP_SUCCESS"; 6752 break; 6753 case CMD_STATIC_IP_FAILURE: 6754 s = "CMD_STATIC_IP_FAILURE"; 6755 break; 6756 case DhcpStateMachine.DHCP_SUCCESS: 6757 s = "DHCP_SUCCESS"; 6758 break; 6759 case DhcpStateMachine.DHCP_FAILURE: 6760 s = "DHCP_FAILURE"; 6761 break; 6762 case CMD_TARGET_BSSID: 6763 s = "CMD_TARGET_BSSID"; 6764 break; 6765 case CMD_ASSOCIATED_BSSID: 6766 s = "CMD_ASSOCIATED_BSSID"; 6767 break; 6768 case CMD_REMOVE_APP_CONFIGURATIONS: 6769 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6770 break; 6771 case CMD_REMOVE_USER_CONFIGURATIONS: 6772 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6773 break; 6774 case CMD_ROAM_WATCHDOG_TIMER: 6775 s = "CMD_ROAM_WATCHDOG_TIMER"; 6776 break; 6777 case CMD_SCREEN_STATE_CHANGED: 6778 s = "CMD_SCREEN_STATE_CHANGED"; 6779 break; 6780 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6781 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6782 break; 6783 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6784 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6785 break; 6786 case CMD_STARTED_PNO_DBG: 6787 s = "CMD_STARTED_PNO_DBG"; 6788 break; 6789 case CMD_STARTED_GSCAN_DBG: 6790 s = "CMD_STARTED_GSCAN_DBG"; 6791 break; 6792 case CMD_PNO_NETWORK_FOUND: 6793 s = "CMD_PNO_NETWORK_FOUND"; 6794 break; 6795 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6796 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6797 break; 6798 case CMD_START_IP_PACKET_OFFLOAD: 6799 s = "CMD_START_IP_PACKET_OFFLOAD"; 6800 break; 6801 case CMD_STOP_IP_PACKET_OFFLOAD: 6802 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 6803 break; 6804 case CMD_START_RSSI_MONITORING_OFFLOAD: 6805 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 6806 break; 6807 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 6808 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 6809 break; 6810 case CMD_RSSI_THRESHOLD_BREACH: 6811 s = "CMD_RSSI_THRESHOLD_BREACH"; 6812 break; 6813 case CMD_USER_SWITCH: 6814 s = "CMD_USER_SWITCH"; 6815 break; 6816 case CMD_IPV4_PROVISIONING_SUCCESS: 6817 s = "CMD_IPV4_PROVISIONING_SUCCESS"; 6818 break; 6819 case CMD_IPV4_PROVISIONING_FAILURE: 6820 s = "CMD_IPV4_PROVISIONING_FAILURE"; 6821 break; 6822 default: 6823 s = "what:" + Integer.toString(what); 6824 break; 6825 } 6826 return s; 6827 } 6828 6829 void registerConnected() { 6830 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6831 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6832 if (config != null) { 6833 //Here we will clear all disable counters once a network is connected 6834 //records how long this network is connected in future 6835 config.lastConnected = System.currentTimeMillis(); 6836 config.getNetworkSelectionStatus().clearDisableReasonCounter(); 6837 } 6838 mBadLinkspeedcount = 0; 6839 } 6840 } 6841 6842 void registerDisconnected() { 6843 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6844 long now_ms = System.currentTimeMillis(); 6845 // We are switching away from this configuration, 6846 // hence record the time we were connected last 6847 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6848 if (config != null) { 6849 config.lastDisconnected = System.currentTimeMillis(); 6850 if (config.ephemeral) { 6851 // Remove ephemeral WifiConfigurations from file 6852 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6853 } 6854 } 6855 } 6856 } 6857 6858 void noteWifiDisabledWhileAssociated() { 6859 // We got disabled by user while we were associated, make note of it 6860 int rssi = mWifiInfo.getRssi(); 6861 WifiConfiguration config = getCurrentWifiConfiguration(); 6862 if (getCurrentState() == mConnectedState 6863 && rssi != WifiInfo.INVALID_RSSI 6864 && config != null) { 6865 boolean is24GHz = mWifiInfo.is24GHz(); 6866 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 6867 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 6868 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 6869 || (!is24GHz && mWifiInfo.getRssi() 6870 < mWifiConfigStore.thresholdQualifiedRssi5.get()); 6871 boolean isHighRSSI = (is24GHz && rssi 6872 >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 6873 || (!is24GHz && mWifiInfo.getRssi() 6874 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 6875 if (isBadRSSI) { 6876 // Take note that we got disabled while RSSI was Bad 6877 config.numUserTriggeredWifiDisableLowRSSI++; 6878 } else if (isLowRSSI) { 6879 // Take note that we got disabled while RSSI was Low 6880 config.numUserTriggeredWifiDisableBadRSSI++; 6881 } else if (!isHighRSSI) { 6882 // Take note that we got disabled while RSSI was Not high 6883 config.numUserTriggeredWifiDisableNotHighRSSI++; 6884 } 6885 } 6886 } 6887 6888 WifiConfiguration getCurrentWifiConfiguration() { 6889 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6890 return null; 6891 } 6892 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6893 } 6894 6895 ScanResult getCurrentScanResult() { 6896 WifiConfiguration config = getCurrentWifiConfiguration(); 6897 if (config == null) { 6898 return null; 6899 } 6900 String BSSID = mWifiInfo.getBSSID(); 6901 if (BSSID == null) { 6902 BSSID = mTargetRoamBSSID; 6903 } 6904 ScanDetailCache scanDetailCache = 6905 mWifiConfigStore.getScanDetailCache(config); 6906 6907 if (scanDetailCache == null) { 6908 return null; 6909 } 6910 6911 return scanDetailCache.get(BSSID); 6912 } 6913 6914 String getCurrentBSSID() { 6915 if (linkDebouncing) { 6916 return null; 6917 } 6918 return mLastBssid; 6919 } 6920 6921 class ConnectModeState extends State { 6922 6923 @Override 6924 public void enter() { 6925 connectScanningService(); 6926 } 6927 6928 @Override 6929 public boolean processMessage(Message message) { 6930 WifiConfiguration config; 6931 int netId; 6932 boolean ok; 6933 boolean didDisconnect; 6934 String bssid; 6935 String ssid; 6936 NetworkUpdateResult result; 6937 logStateAndMessage(message, this); 6938 6939 switch (message.what) { 6940 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6941 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6942 didBlackListBSSID = false; 6943 bssid = (String) message.obj; 6944 if (bssid == null || TextUtils.isEmpty(bssid)) { 6945 // If BSSID is null, use the target roam BSSID 6946 bssid = mTargetRoamBSSID; 6947 } 6948 if (bssid != null) { 6949 // If we have a BSSID, tell configStore to black list it 6950 synchronized(mScanResultCache) { 6951 didBlackListBSSID = mWifiQualifiedNetworkSelector 6952 .enableBssidForQualitynetworkSelection(bssid, false); 6953 } 6954 } 6955 6956 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 6957 WifiConfiguration.NetworkSelectionStatus 6958 .DISABLED_ASSOCIATION_REJECTION); 6959 6960 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6961 //If rejection occurred while Metrics is tracking a ConnnectionEvent, end it. 6962 mWifiMetrics.endConnectionEvent( 6963 WifiMetrics.ConnectionEvent.LLF_ASSOCIATION_REJECTION, 6964 WifiMetricsProto.ConnectionEvent.HLF_NONE); 6965 break; 6966 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6967 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6968 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6969 if (mTargetNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6970 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 6971 WifiConfiguration.NetworkSelectionStatus 6972 .DISABLED_AUTHENTICATION_FAILURE); 6973 } 6974 //If failure occurred while Metrics is tracking a ConnnectionEvent, end it. 6975 mWifiMetrics.endConnectionEvent( 6976 WifiMetrics.ConnectionEvent.LLF_AUTHENTICATION_FAILURE, 6977 WifiMetricsProto.ConnectionEvent.HLF_NONE); 6978 break; 6979 case WifiMonitor.SSID_TEMP_DISABLED: 6980 Log.e(TAG, "Supplicant SSID temporary disabled:" 6981 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 6982 mWifiConfigStore.updateNetworkSelectionStatus( 6983 message.arg1, 6984 WifiConfiguration.NetworkSelectionStatus 6985 .DISABLED_AUTHENTICATION_FAILURE); 6986 mWifiMetrics.endConnectionEvent( 6987 WifiMetrics.ConnectionEvent.LLF_SSID_TEMP_DISABLED, 6988 WifiMetricsProto.ConnectionEvent.HLF_NONE); 6989 break; 6990 case WifiMonitor.SSID_REENABLED: 6991 Log.d(TAG, "Supplicant SSID reenable:" 6992 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 6993 // Do not re-enable it in Quality Network Selection since framework has its own 6994 // Algorithm of disable/enable 6995 break; 6996 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6997 SupplicantState state = handleSupplicantStateChange(message); 6998 // A driver/firmware hang can now put the interface in a down state. 6999 // We detect the interface going down and recover from it 7000 if (!SupplicantState.isDriverActive(state)) { 7001 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7002 handleNetworkDisconnect(); 7003 } 7004 log("Detected an interface down, restart driver"); 7005 transitionTo(mDriverStoppedState); 7006 sendMessage(CMD_START_DRIVER); 7007 break; 7008 } 7009 7010 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7011 // when authentication times out after a successful connection, 7012 // we can figure this from the supplicant state. If supplicant 7013 // state is DISCONNECTED, but the mNetworkInfo says we are not 7014 // disconnected, we need to handle a disconnection 7015 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7016 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7017 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7018 handleNetworkDisconnect(); 7019 transitionTo(mDisconnectedState); 7020 } 7021 7022 // If we have COMPLETED a connection to a BSSID, start doing 7023 // DNAv4/DNAv6 -style probing for on-link neighbors of 7024 // interest (e.g. routers); harmless if none are configured. 7025 if (state == SupplicantState.COMPLETED) { 7026 mIpManager.confirmConfiguration(); 7027 } 7028 break; 7029 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7030 if (message.arg1 == 1) { 7031 mWifiNative.disconnect(); 7032 mTemporarilyDisconnectWifi = true; 7033 } else { 7034 mWifiNative.reconnect(); 7035 mTemporarilyDisconnectWifi = false; 7036 } 7037 break; 7038 case CMD_ADD_OR_UPDATE_NETWORK: 7039 // Only the current foreground user can modify networks. 7040 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7041 loge("Only the current foreground user can modify networks " 7042 + " currentUserId=" + mCurrentUserId 7043 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7044 replyToMessage(message, message.what, FAILURE); 7045 break; 7046 } 7047 7048 config = (WifiConfiguration) message.obj; 7049 7050 if (!recordUidIfAuthorized(config, message.sendingUid, 7051 /* onlyAnnotate */ false)) { 7052 logw("Not authorized to update network " 7053 + " config=" + config.SSID 7054 + " cnid=" + config.networkId 7055 + " uid=" + message.sendingUid); 7056 replyToMessage(message, message.what, FAILURE); 7057 break; 7058 } 7059 7060 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7061 if (res < 0) { 7062 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7063 } else { 7064 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7065 if (curConfig != null && config != null) { 7066 if (curConfig.priority < config.priority 7067 && config.status == WifiConfiguration.Status.ENABLED) { 7068 // Interpret this as a connect attempt 7069 // Set the last selected configuration so as to allow the system to 7070 // stick the last user choice without persisting the choice 7071 mWifiConfigStore.setAndEnableLastSelectedConfiguration(res); 7072 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7073 boolean persist = mWifiConfigStore 7074 .checkConfigOverridePermission(message.sendingUid); 7075 mWifiQualifiedNetworkSelector 7076 .userSelectNetwork(res, persist); 7077 7078 // Remember time of last connection attempt 7079 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7080 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7081 7082 // As a courtesy to the caller, trigger a scan now 7083 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7084 } 7085 } 7086 } 7087 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7088 break; 7089 case CMD_REMOVE_NETWORK: 7090 // Only the current foreground user can modify networks. 7091 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7092 loge("Only the current foreground user can modify networks " 7093 + " currentUserId=" + mCurrentUserId 7094 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7095 replyToMessage(message, message.what, FAILURE); 7096 break; 7097 } 7098 netId = message.arg1; 7099 7100 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7101 /* onlyAnnotate */ false)) { 7102 logw("Not authorized to remove network " 7103 + " cnid=" + netId 7104 + " uid=" + message.sendingUid); 7105 replyToMessage(message, message.what, FAILURE); 7106 break; 7107 } 7108 7109 ok = mWifiConfigStore.removeNetwork(message.arg1); 7110 if (!ok) { 7111 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7112 } 7113 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7114 break; 7115 case CMD_ENABLE_NETWORK: 7116 // Only the current foreground user can modify networks. 7117 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7118 loge("Only the current foreground user can modify networks " 7119 + " currentUserId=" + mCurrentUserId 7120 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7121 replyToMessage(message, message.what, FAILURE); 7122 break; 7123 } 7124 7125 boolean disableOthers = message.arg2 == 1; 7126 netId = message.arg1; 7127 config = mWifiConfigStore.getWifiConfiguration(netId); 7128 if (config == null) { 7129 loge("No network with id = " + netId); 7130 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7131 replyToMessage(message, message.what, FAILURE); 7132 break; 7133 } 7134 7135 // disable other only means select this network, does not mean all other 7136 // networks need to be disabled 7137 if (disableOthers) { 7138 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7139 // Remember time of last connection attempt 7140 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7141 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7142 } 7143 // Cancel auto roam requests 7144 autoRoamSetBSSID(netId, "any"); 7145 7146 int uid = message.sendingUid; 7147 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7148 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7149 if (!ok) { 7150 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7151 } else if (disableOthers) { 7152 mTargetNetworkId = netId; 7153 } 7154 7155 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7156 break; 7157 case CMD_ENABLE_ALL_NETWORKS: 7158 long time = android.os.SystemClock.elapsedRealtime(); 7159 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7160 mWifiConfigStore.enableAllNetworks(); 7161 mLastEnableAllNetworksTime = time; 7162 } 7163 break; 7164 case WifiManager.DISABLE_NETWORK: 7165 if (mWifiConfigStore.updateNetworkSelectionStatus(message.arg1, 7166 WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WIFI_MANAGER)) { 7167 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7168 } else { 7169 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7170 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7171 WifiManager.ERROR); 7172 } 7173 break; 7174 case CMD_DISABLE_EPHEMERAL_NETWORK: 7175 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7176 if (config != null) { 7177 if (config.networkId == mLastNetworkId) { 7178 // Disconnect and let autojoin reselect a new network 7179 sendMessage(CMD_DISCONNECT); 7180 } 7181 } 7182 break; 7183 case CMD_BLACKLIST_NETWORK: 7184 mWifiConfigStore.blackListBssid((String) message.obj); 7185 break; 7186 case CMD_CLEAR_BLACKLIST: 7187 mWifiConfigStore.clearBssidBlacklist(); 7188 break; 7189 case CMD_SAVE_CONFIG: 7190 ok = mWifiConfigStore.saveConfig(); 7191 7192 if (DBG) logd("did save config " + ok); 7193 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7194 7195 // Inform the backup manager about a data change 7196 IBackupManager ibm = IBackupManager.Stub.asInterface( 7197 mFacade.getService(Context.BACKUP_SERVICE)); 7198 if (ibm != null) { 7199 try { 7200 ibm.dataChanged("com.android.providers.settings"); 7201 } catch (Exception e) { 7202 // Try again later 7203 } 7204 } 7205 break; 7206 case CMD_GET_CONFIGURED_NETWORKS: 7207 replyToMessage(message, message.what, 7208 mWifiConfigStore.getConfiguredNetworks()); 7209 break; 7210 case WifiMonitor.SUP_REQUEST_IDENTITY: 7211 int networkId = message.arg2; 7212 boolean identitySent = false; 7213 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7214 7215 if (targetWificonfiguration != null 7216 && targetWificonfiguration.enterpriseConfig != null) { 7217 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7218 } 7219 7220 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7221 if (targetWificonfiguration != null 7222 && targetWificonfiguration.networkId == networkId 7223 && targetWificonfiguration.allowedKeyManagement 7224 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7225 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7226 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7227 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7228 TelephonyManager tm = (TelephonyManager) 7229 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7230 if (tm != null) { 7231 String imsi = tm.getSubscriberId(); 7232 String mccMnc = ""; 7233 7234 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7235 mccMnc = tm.getSimOperator(); 7236 7237 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7238 7239 if (!identity.isEmpty()) { 7240 mWifiNative.simIdentityResponse(networkId, identity); 7241 identitySent = true; 7242 } 7243 } 7244 } 7245 if (!identitySent) { 7246 // Supplicant lacks credentials to connect to that network, hence black list 7247 ssid = (String) message.obj; 7248 if (targetWificonfiguration != null && ssid != null 7249 && targetWificonfiguration.SSID != null 7250 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7251 mWifiConfigStore.updateNetworkSelectionStatus(targetWificonfiguration, 7252 WifiConfiguration.NetworkSelectionStatus 7253 .DISABLED_AUTHENTICATION_NO_CREDENTIALS); 7254 } 7255 // Disconnect now, as we don't have any way to fullfill 7256 // the supplicant request. 7257 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 7258 WifiConfiguration.INVALID_NETWORK_ID); 7259 mWifiNative.disconnect(); 7260 } 7261 break; 7262 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7263 logd("Received SUP_REQUEST_SIM_AUTH"); 7264 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7265 if (requestData != null) { 7266 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7267 handleGsmAuthRequest(requestData); 7268 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7269 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7270 handle3GAuthRequest(requestData); 7271 } 7272 } else { 7273 loge("Invalid sim auth request"); 7274 } 7275 break; 7276 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7277 replyToMessage(message, message.what, 7278 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7279 break; 7280 case CMD_GET_MATCHING_CONFIG: 7281 replyToMessage(message, message.what, 7282 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7283 break; 7284 /* Do a redundant disconnect without transition */ 7285 case CMD_DISCONNECT: 7286 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7287 (WifiConfiguration.INVALID_NETWORK_ID); 7288 mWifiNative.disconnect(); 7289 break; 7290 case CMD_RECONNECT: 7291 WifiConfiguration candidate = 7292 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(true, 7293 mAllowUntrustedConnections, mScanResults, linkDebouncing, 7294 isConnected(), isDisconnected(), isSupplicantTransientState()); 7295 tryToConnectToNetwork(candidate); 7296 break; 7297 case CMD_REASSOCIATE: 7298 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7299 mWifiNative.reassociate(); 7300 break; 7301 case CMD_RELOAD_TLS_AND_RECONNECT: 7302 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7303 logd("Reconnecting to give a chance to un-connected TLS networks"); 7304 mWifiNative.disconnect(); 7305 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7306 mWifiNative.reconnect(); 7307 } 7308 break; 7309 case CMD_AUTO_ROAM: 7310 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7311 return HANDLED; 7312 case CMD_AUTO_CONNECT: 7313 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7314 * associated status to the STATUS command but somehow-someplace still thinks 7315 * it is associated and thus will ignore select/reconnect command with 7316 * following message: 7317 * "Already associated with the selected network - do nothing" 7318 * 7319 * Hence, sends a disconnect to supplicant first. 7320 */ 7321 didDisconnect = false; 7322 if (getCurrentState() != mDisconnectedState) { 7323 /** Supplicant will ignore the reconnect if we are currently associated, 7324 * hence trigger a disconnect 7325 */ 7326 didDisconnect = true; 7327 mWifiNative.disconnect(); 7328 } 7329 7330 /* connect command coming from auto-join */ 7331 netId = message.arg1; 7332 mTargetNetworkId = netId; 7333 mTargetRoamBSSID = (String) message.obj; 7334 config = mWifiConfigStore.getWifiConfiguration(netId); 7335 logd("CMD_AUTO_CONNECT sup state " 7336 + mSupplicantStateTracker.getSupplicantStateName() 7337 + " my state " + getCurrentState().getName() 7338 + " nid=" + Integer.toString(netId) 7339 + " roam=" + Boolean.toString(mAutoRoaming)); 7340 if (config == null) { 7341 loge("AUTO_CONNECT and no config, bail out..."); 7342 break; 7343 } 7344 7345 /* Make sure we cancel any previous roam request */ 7346 setTargetBssid(config, mTargetRoamBSSID); 7347 7348 /* Save the network config */ 7349 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7350 + " nid=" + Integer.toString(netId)); 7351 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7352 netId = result.getNetworkId(); 7353 logd("CMD_AUTO_CONNECT did save config -> " 7354 + " nid=" + Integer.toString(netId)); 7355 7356 // Since we updated the config,read it back from config store: 7357 config = mWifiConfigStore.getWifiConfiguration(netId); 7358 if (config == null) { 7359 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7360 break; 7361 } 7362 if (netId != config.networkId) { 7363 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7364 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7365 break; 7366 } 7367 7368 if (deferForUserInput(message, netId, false)) { 7369 break; 7370 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7371 WifiConfiguration.USER_BANNED) { 7372 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7373 WifiManager.NOT_AUTHORIZED); 7374 break; 7375 } 7376 7377 // Make sure the network is enabled, since supplicant will not reenable it 7378 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7379 7380 // If we're autojoining a network that the user or an app explicitly selected, 7381 // keep track of the UID that selected it. 7382 // TODO(b/26786318): Keep track of the lastSelectedConfiguration and the 7383 // lastConnectUid on a per-user basis. 7384 int lastConnectUid = WifiConfiguration.UNKNOWN_UID; 7385 if (mWifiConfigStore.isLastSelectedConfiguration(config) 7386 && UserHandle.getUserId(config.lastConnectUid) == mCurrentUserId) { 7387 lastConnectUid = config.lastConnectUid; 7388 } 7389 mWifiMetrics.startConnectionEvent(mWifiInfo, config, 7390 WifiMetricsProto.ConnectionEvent.ROAM_NONE); 7391 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7392 lastConnectUid) && mWifiNative.reconnect()) { 7393 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7394 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7395 config = mWifiConfigStore.getWifiConfiguration(netId); 7396 if (config != null 7397 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7398 // If we autojoined a different config than the user selected one, 7399 // it means we could not see the last user selection, 7400 // or that the last user selection was faulty and ended up blacklisted 7401 // for some reason (in which case the user is notified with an error 7402 // message in the Wifi picker), and thus we managed to auto-join away 7403 // from the selected config. -> in that case we need to forget 7404 // the selection because we don't want to abruptly switch back to it. 7405 // 7406 // Note that the user selection is also forgotten after a period of time 7407 // during which the device has been disconnected. 7408 // The default value is 30 minutes : see the code path at bottom of 7409 // setScanResults() function. 7410 mWifiConfigStore. 7411 setAndEnableLastSelectedConfiguration( 7412 WifiConfiguration.INVALID_NETWORK_ID); 7413 mWifiMetrics.setConnectionEventRoamType( 7414 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7415 } 7416 mAutoRoaming = false; 7417 if (isRoaming() || linkDebouncing) { 7418 transitionTo(mRoamingState); 7419 } else if (didDisconnect) { 7420 transitionTo(mDisconnectingState); 7421 } else { 7422 /* Already in disconnected state, nothing to change */ 7423 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7424 int delay = 60 * 1000; 7425 if (VDBG) { 7426 logd("Starting PNO alarm: " + delay); 7427 } 7428 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7429 System.currentTimeMillis() + delay, 7430 mPnoIntent); 7431 } 7432 mRestartAutoJoinOffloadCounter++; 7433 } 7434 } else { 7435 loge("Failed to connect config: " + config + " netId: " + netId); 7436 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7437 WifiManager.ERROR); 7438 mWifiMetrics.endConnectionEvent( 7439 WifiMetrics.ConnectionEvent.LLF_CONNECT_NETWORK_FAILED, 7440 WifiMetricsProto.ConnectionEvent.HLF_NONE); 7441 break; 7442 } 7443 break; 7444 case CMD_REMOVE_APP_CONFIGURATIONS: 7445 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7446 break; 7447 case CMD_REMOVE_USER_CONFIGURATIONS: 7448 mWifiConfigStore.removeNetworksForUser(message.arg1); 7449 break; 7450 case WifiManager.CONNECT_NETWORK: 7451 // Only the current foreground user can modify networks. 7452 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7453 loge("Only the current foreground user can modify networks " 7454 + " currentUserId=" + mCurrentUserId 7455 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7456 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7457 WifiManager.NOT_AUTHORIZED); 7458 break; 7459 } 7460 7461 /** 7462 * The connect message can contain a network id passed as arg1 on message or 7463 * or a config passed as obj on message. 7464 * For a new network, a config is passed to create and connect. 7465 * For an existing network, a network id is passed 7466 */ 7467 netId = message.arg1; 7468 config = (WifiConfiguration) message.obj; 7469 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7470 boolean updatedExisting = false; 7471 7472 /* Save the network config */ 7473 if (config != null) { 7474 // When connecting to an access point, WifiStateMachine wants to update the 7475 // relevant config with administrative data. This update should not be 7476 // considered a 'real' update, therefore lockdown by Device Owner must be 7477 // disregarded. 7478 if (!recordUidIfAuthorized(config, message.sendingUid, 7479 /* onlyAnnotate */ true)) { 7480 logw("Not authorized to update network " 7481 + " config=" + config.SSID 7482 + " cnid=" + config.networkId 7483 + " uid=" + message.sendingUid); 7484 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7485 WifiManager.NOT_AUTHORIZED); 7486 break; 7487 } 7488 7489 String configKey = config.configKey(true /* allowCached */); 7490 WifiConfiguration savedConfig = 7491 mWifiConfigStore.getWifiConfiguration(configKey); 7492 if (savedConfig != null) { 7493 // There is an existing config with this netId, but it wasn't exposed 7494 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7495 // getConfiguredNetworks). Remove those bits and update the config. 7496 config = savedConfig; 7497 logd("CONNECT_NETWORK updating existing config with id=" + 7498 config.networkId + " configKey=" + configKey); 7499 config.ephemeral = false; 7500 mWifiConfigStore.updateNetworkSelectionStatus(config, 7501 WifiConfiguration.NetworkSelectionStatus 7502 .NETWORK_SELECTION_ENABLE); 7503 updatedExisting = true; 7504 } 7505 7506 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7507 netId = result.getNetworkId(); 7508 } 7509 config = mWifiConfigStore.getWifiConfiguration(netId); 7510 7511 if (config == null) { 7512 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7513 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7514 + getCurrentState().getName()); 7515 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7516 WifiManager.ERROR); 7517 break; 7518 } 7519 mTargetNetworkId = netId; 7520 autoRoamSetBSSID(netId, "any"); 7521 7522 if (message.sendingUid == Process.WIFI_UID 7523 || message.sendingUid == Process.SYSTEM_UID) { 7524 // As a sanity measure, clear the BSSID in the supplicant network block. 7525 // If system or Wifi Settings want to connect, they will not 7526 // specify the BSSID. 7527 // If an app however had added a BSSID to this configuration, and the BSSID 7528 // was wrong, Then we would forever fail to connect until that BSSID 7529 // is cleaned up. 7530 clearConfigBSSID(config, "CONNECT_NETWORK"); 7531 } 7532 7533 if (deferForUserInput(message, netId, true)) { 7534 break; 7535 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7536 WifiConfiguration.USER_BANNED) { 7537 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7538 WifiManager.NOT_AUTHORIZED); 7539 break; 7540 } 7541 7542 mAutoRoaming = false; 7543 7544 /* Tell network selection the user did try to connect to that network if from 7545 settings */ 7546 boolean persist = 7547 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7548 7549 7550 mWifiConfigStore.setAndEnableLastSelectedConfiguration(netId); 7551 mWifiQualifiedNetworkSelector.userSelectNetwork(netId, persist); 7552 didDisconnect = false; 7553 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7554 && mLastNetworkId != netId) { 7555 /** Supplicant will ignore the reconnect if we are currently associated, 7556 * hence trigger a disconnect 7557 */ 7558 didDisconnect = true; 7559 mWifiNative.disconnect(); 7560 } 7561 7562 // Make sure the network is enabled, since supplicant will not reenable it 7563 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7564 7565 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7566 message.sendingUid) && mWifiNative.reconnect()) { 7567 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7568 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7569 7570 /* The state tracker handles enabling networks upon completion/failure */ 7571 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7572 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7573 if (didDisconnect) { 7574 /* Expect a disconnection from the old connection */ 7575 transitionTo(mDisconnectingState); 7576 } else if (updatedExisting && getCurrentState() == mConnectedState && 7577 getCurrentWifiConfiguration().networkId == netId) { 7578 // Update the current set of network capabilities, but stay in the 7579 // current state. 7580 updateCapabilities(config); 7581 } else { 7582 /** 7583 * Directly go to disconnected state where we 7584 * process the connection events from supplicant 7585 */ 7586 transitionTo(mDisconnectedState); 7587 } 7588 } else { 7589 loge("Failed to connect config: " + config + " netId: " + netId); 7590 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7591 WifiManager.ERROR); 7592 break; 7593 } 7594 break; 7595 case WifiManager.SAVE_NETWORK: 7596 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7597 // Fall thru 7598 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7599 // Only the current foreground user can modify networks. 7600 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7601 loge("Only the current foreground user can modify networks " 7602 + " currentUserId=" + mCurrentUserId 7603 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7604 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7605 WifiManager.NOT_AUTHORIZED); 7606 break; 7607 } 7608 7609 lastSavedConfigurationAttempt = null; // Used for debug 7610 config = (WifiConfiguration) message.obj; 7611 if (config == null) { 7612 loge("ERROR: SAVE_NETWORK with null configuration" 7613 + mSupplicantStateTracker.getSupplicantStateName() 7614 + " my state " + getCurrentState().getName()); 7615 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7616 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7617 WifiManager.ERROR); 7618 break; 7619 } 7620 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7621 int nid = config.networkId; 7622 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7623 + " config=" + config.SSID 7624 + " nid=" + config.networkId 7625 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7626 + " my state " + getCurrentState().getName()); 7627 7628 // Only record the uid if this is user initiated 7629 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7630 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7631 /* onlyAnnotate */ false)) { 7632 logw("Not authorized to update network " 7633 + " config=" + config.SSID 7634 + " cnid=" + config.networkId 7635 + " uid=" + message.sendingUid); 7636 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7637 WifiManager.NOT_AUTHORIZED); 7638 break; 7639 } 7640 7641 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7642 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7643 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7644 if (result.hasIpChanged()) { 7645 // The currently connection configuration was changed 7646 // We switched from DHCP to static or from static to DHCP, or the 7647 // static IP address has changed. 7648 log("Reconfiguring IP on connection"); 7649 // TODO: clear addresses and disable IPv6 7650 // to simplify obtainingIpState. 7651 transitionTo(mObtainingIpState); 7652 } 7653 if (result.hasProxyChanged()) { 7654 log("Reconfiguring proxy on connection"); 7655 notifyLinkProperties(); 7656 } 7657 } 7658 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7659 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7660 7661 if (VDBG) { 7662 logd("Success save network nid=" 7663 + Integer.toString(result.getNetworkId())); 7664 } 7665 7666 synchronized(mScanResultCache) { 7667 /** 7668 * If the command comes from WifiManager, then 7669 * tell autojoin the user did try to modify and save that network, 7670 * and interpret the SAVE_NETWORK as a request to connect 7671 */ 7672 boolean user = message.what == WifiManager.SAVE_NETWORK; 7673 7674 // Did this connect come from settings 7675 boolean persistConnect = 7676 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7677 7678 if (user) { 7679 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7680 mWifiConfigStore.writeKnownNetworkHistory(); 7681 } 7682 //Fixme, CMD_AUTO_SAVE_NETWORK can be cleaned 7683 mWifiQualifiedNetworkSelector.userSelectNetwork( 7684 result.getNetworkId(), persistConnect); 7685 candidate = mWifiQualifiedNetworkSelector.selectQualifiedNetwork(true, 7686 mAllowUntrustedConnections, mScanResults, linkDebouncing, 7687 isConnected(), isDisconnected(), isSupplicantTransientState()); 7688 tryToConnectToNetwork(candidate); 7689 } 7690 } else { 7691 loge("Failed to save network"); 7692 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7693 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7694 WifiManager.ERROR); 7695 } 7696 break; 7697 case WifiManager.FORGET_NETWORK: 7698 // Only the current foreground user can modify networks. 7699 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7700 loge("Only the current foreground user can modify networks " 7701 + " currentUserId=" + mCurrentUserId 7702 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7703 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7704 WifiManager.NOT_AUTHORIZED); 7705 break; 7706 } 7707 7708 // Debug only, remember last configuration that was forgotten 7709 WifiConfiguration toRemove 7710 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7711 if (toRemove == null) { 7712 lastForgetConfigurationAttempt = null; 7713 } else { 7714 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7715 } 7716 // check that the caller owns this network 7717 netId = message.arg1; 7718 7719 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7720 /* onlyAnnotate */ false)) { 7721 logw("Not authorized to forget network " 7722 + " cnid=" + netId 7723 + " uid=" + message.sendingUid); 7724 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7725 WifiManager.NOT_AUTHORIZED); 7726 break; 7727 } 7728 7729 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7730 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7731 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7732 (WifiConfiguration) message.obj); 7733 } else { 7734 loge("Failed to forget network"); 7735 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7736 WifiManager.ERROR); 7737 } 7738 break; 7739 case WifiManager.START_WPS: 7740 WpsInfo wpsInfo = (WpsInfo) message.obj; 7741 WpsResult wpsResult; 7742 switch (wpsInfo.setup) { 7743 case WpsInfo.PBC: 7744 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7745 break; 7746 case WpsInfo.KEYPAD: 7747 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7748 break; 7749 case WpsInfo.DISPLAY: 7750 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7751 break; 7752 default: 7753 wpsResult = new WpsResult(Status.FAILURE); 7754 loge("Invalid setup for WPS"); 7755 break; 7756 } 7757 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7758 (WifiConfiguration.INVALID_NETWORK_ID); 7759 if (wpsResult.status == Status.SUCCESS) { 7760 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7761 transitionTo(mWpsRunningState); 7762 } else { 7763 loge("Failed to start WPS with config " + wpsInfo.toString()); 7764 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7765 } 7766 break; 7767 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7768 if (DBG) log("Network connection established"); 7769 mLastNetworkId = message.arg1; 7770 mLastBssid = (String) message.obj; 7771 7772 mWifiInfo.setBSSID(mLastBssid); 7773 mWifiInfo.setNetworkId(mLastNetworkId); 7774 sendNetworkStateChangeBroadcast(mLastBssid); 7775 transitionTo(mObtainingIpState); 7776 break; 7777 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7778 // Calling handleNetworkDisconnect here is redundant because we might already 7779 // have called it when leaving L2ConnectedState to go to disconnecting state 7780 // or thru other path 7781 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7782 // if they are valid, and only in this case call handleNEtworkDisconnect, 7783 // TODO: this should be fixed for a L MR release 7784 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7785 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7786 // at the chip etc... 7787 if (DBG) log("ConnectModeState: Network connection lost "); 7788 handleNetworkDisconnect(); 7789 transitionTo(mDisconnectedState); 7790 break; 7791 case CMD_PNO_NETWORK_FOUND: 7792 processPnoNetworkFound((ScanResult[]) message.obj); 7793 break; 7794 case CMD_ADD_PASSPOINT_MO: 7795 res = mWifiConfigStore.addPasspointManagementObject((String) message.obj); 7796 replyToMessage(message, message.what, res); 7797 break; 7798 case CMD_MODIFY_PASSPOINT_MO: 7799 if (message.obj != null) { 7800 Bundle bundle = (Bundle) message.obj; 7801 ArrayList<PasspointManagementObjectDefinition> mos = 7802 bundle.getParcelableArrayList("MOS"); 7803 res = mWifiConfigStore.modifyPasspointMo(bundle.getString("FQDN"), mos); 7804 } else { 7805 res = 0; 7806 } 7807 replyToMessage(message, message.what, res); 7808 7809 break; 7810 case CMD_QUERY_OSU_ICON: 7811 if (mWifiConfigStore.queryPasspointIcon( 7812 ((Bundle) message.obj).getLong("BSSID"), 7813 ((Bundle) message.obj).getString("FILENAME"))) { 7814 res = 1; 7815 } else { 7816 res = 0; 7817 } 7818 replyToMessage(message, message.what, res); 7819 break; 7820 case CMD_MATCH_PROVIDER_NETWORK: 7821 res = mWifiConfigStore.matchProviderWithCurrentNetwork((String) message.obj); 7822 replyToMessage(message, message.what, res); 7823 break; 7824 default: 7825 return NOT_HANDLED; 7826 } 7827 return HANDLED; 7828 } 7829 } 7830 7831 private void updateCapabilities(WifiConfiguration config) { 7832 NetworkCapabilities networkCapabilities = new NetworkCapabilities(mDfltNetworkCapabilities); 7833 if (config != null) { 7834 if (config.ephemeral) { 7835 networkCapabilities.removeCapability( 7836 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7837 } else { 7838 networkCapabilities.addCapability( 7839 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7840 } 7841 networkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7842 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7843 } 7844 mNetworkAgent.sendNetworkCapabilities(networkCapabilities); 7845 } 7846 7847 private class WifiNetworkAgent extends NetworkAgent { 7848 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7849 NetworkCapabilities nc, LinkProperties lp, int score) { 7850 super(l, c, TAG, ni, nc, lp, score); 7851 } 7852 protected void unwanted() { 7853 // Ignore if we're not the current networkAgent. 7854 if (this != mNetworkAgent) return; 7855 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7856 + Integer.toString(mWifiInfo.score)); 7857 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7858 } 7859 7860 @Override 7861 protected void networkStatus(int status) { 7862 if (this != mNetworkAgent) return; 7863 if (status == NetworkAgent.INVALID_NETWORK) { 7864 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7865 + Integer.toString(mWifiInfo.score)); 7866 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7867 } else if (status == NetworkAgent.VALID_NETWORK) { 7868 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7869 + Integer.toString(mWifiInfo.score)); 7870 doNetworkStatus(status); 7871 } 7872 } 7873 7874 @Override 7875 protected void saveAcceptUnvalidated(boolean accept) { 7876 if (this != mNetworkAgent) return; 7877 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7878 } 7879 7880 @Override 7881 protected void startPacketKeepalive(Message msg) { 7882 WifiStateMachine.this.sendMessage( 7883 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7884 } 7885 7886 @Override 7887 protected void stopPacketKeepalive(Message msg) { 7888 WifiStateMachine.this.sendMessage( 7889 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7890 } 7891 7892 @Override 7893 protected void setSignalStrengthThresholds(int[] thresholds) { 7894 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 7895 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 7896 // MAX_VALUE at the start/end of the thresholds array if necessary. 7897 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 7898 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 7899 // re-arm the hardware event. This needs to be done on the state machine thread to 7900 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 7901 // sent in the NetworkCapabilities) must be the one received from the hardware event 7902 // received, or we might skip callbacks. 7903 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 7904 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 7905 if (thresholds.length == 0) { 7906 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7907 mWifiInfo.getRssi()); 7908 return; 7909 } 7910 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 7911 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 7912 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 7913 Arrays.sort(rssiVals); 7914 byte[] rssiRange = new byte[rssiVals.length]; 7915 for (int i = 0; i < rssiVals.length; i++) { 7916 int val = rssiVals[i]; 7917 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 7918 rssiRange[i] = (byte) val; 7919 } else { 7920 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 7921 + Arrays.toString(rssiVals)); 7922 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7923 mWifiInfo.getRssi()); 7924 return; 7925 } 7926 } 7927 // TODO: Do we quash rssi values in this sorted array which are very close? 7928 mRssiRanges = rssiRange; 7929 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 7930 mWifiInfo.getRssi()); 7931 } 7932 7933 @Override 7934 protected void preventAutomaticReconnect() { 7935 if (this != mNetworkAgent) return; 7936 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 7937 } 7938 } 7939 7940 void unwantedNetwork(int reason) { 7941 sendMessage(CMD_UNWANTED_NETWORK, reason); 7942 } 7943 7944 void doNetworkStatus(int status) { 7945 sendMessage(CMD_NETWORK_STATUS, status); 7946 } 7947 7948 // rfc4186 & rfc4187: 7949 // create Permanent Identity base on IMSI, 7950 // identity = usernam@realm 7951 // with username = prefix | IMSI 7952 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7953 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7954 String mcc; 7955 String mnc; 7956 String prefix; 7957 7958 if (imsi == null || imsi.isEmpty()) 7959 return ""; 7960 7961 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7962 prefix = "1"; 7963 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7964 prefix = "0"; 7965 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7966 prefix = "6"; 7967 else // not a valide EapMethod 7968 return ""; 7969 7970 /* extract mcc & mnc from mccMnc */ 7971 if (mccMnc != null && !mccMnc.isEmpty()) { 7972 mcc = mccMnc.substring(0, 3); 7973 mnc = mccMnc.substring(3); 7974 if (mnc.length() == 2) 7975 mnc = "0" + mnc; 7976 } else { 7977 // extract mcc & mnc from IMSI, assume mnc size is 3 7978 mcc = imsi.substring(0, 3); 7979 mnc = imsi.substring(3, 6); 7980 } 7981 7982 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7983 } 7984 7985 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7986 if (config == null) 7987 return false; 7988 7989 // We are still seeing a fairly high power consumption triggered by autojoin scans 7990 // Hence do partial scans only for PSK configuration that are roamable since the 7991 // primary purpose of the partial scans is roaming. 7992 // Full badn scans with exponential backoff for the purpose or extended roaming and 7993 // network switching are performed unconditionally. 7994 ScanDetailCache scanDetailCache = 7995 mWifiConfigStore.getScanDetailCache(config); 7996 if (scanDetailCache == null 7997 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7998 || scanDetailCache.size() > 6) { 7999 //return true but to not trigger the scan 8000 return true; 8001 } 8002 HashSet<Integer> freqs = mWifiConfigStore.makeChannelList(config, 8003 ONE_HOUR_MILLI, restrictChannelList); 8004 if (freqs != null && freqs.size() != 0) { 8005 //if (DBG) { 8006 logd("starting scan for " + config.configKey() + " with " + freqs); 8007 //} 8008 // Call wifi native to start the scan 8009 if (startScanNative(freqs)) { 8010 // Only count battery consumption if scan request is accepted 8011 noteScanStart(SCAN_ALARM_SOURCE, null); 8012 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8013 } else { 8014 // used for debug only, mark scan as failed 8015 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8016 } 8017 return true; 8018 } else { 8019 if (DBG) logd("no channels for " + config.configKey()); 8020 return false; 8021 } 8022 } 8023 8024 void clearCurrentConfigBSSID(String dbg) { 8025 // Clear the bssid in the current config's network block 8026 WifiConfiguration config = getCurrentWifiConfiguration(); 8027 if (config == null) 8028 return; 8029 clearConfigBSSID(config, dbg); 8030 } 8031 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8032 if (config == null) 8033 return; 8034 if (DBG) { 8035 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8036 + " config.NetworkSelectionStatus.mNetworkSelectionBSSID " 8037 + config.getNetworkSelectionStatus().getNetworkSelectionBSSID()); 8038 } 8039 config.getNetworkSelectionStatus().setNetworkSelectionBSSID("any"); 8040 if (DBG) { 8041 logd(dbg + " " + config.SSID 8042 + " nid=" + Integer.toString(config.networkId)); 8043 } 8044 mWifiConfigStore.saveWifiConfigBSSID(config); 8045 } 8046 8047 class L2ConnectedState extends State { 8048 @Override 8049 public void enter() { 8050 mRssiPollToken++; 8051 if (mEnableRssiPolling) { 8052 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8053 } 8054 if (mNetworkAgent != null) { 8055 loge("Have NetworkAgent when entering L2Connected"); 8056 setNetworkDetailedState(DetailedState.DISCONNECTED); 8057 } 8058 setNetworkDetailedState(DetailedState.CONNECTING); 8059 8060 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8061 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8062 } 8063 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8064 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8065 mLinkProperties, 60); 8066 8067 // We must clear the config BSSID, as the wifi chipset may decide to roam 8068 // from this point on and having the BSSID specified in the network block would 8069 // cause the roam to faile and the device to disconnect 8070 clearCurrentConfigBSSID("L2ConnectedState"); 8071 } 8072 8073 @Override 8074 public void exit() { 8075 mIpManager.stop(); 8076 8077 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8078 // Bug: 15347363 8079 // For paranoia's sake, call handleNetworkDisconnect 8080 // only if BSSID is null or last networkId 8081 // is not invalid. 8082 if (DBG) { 8083 StringBuilder sb = new StringBuilder(); 8084 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8085 if (mLastBssid !=null) { 8086 sb.append(" ").append(mLastBssid); 8087 } 8088 } 8089 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8090 handleNetworkDisconnect(); 8091 } 8092 } 8093 8094 @Override 8095 public boolean processMessage(Message message) { 8096 logStateAndMessage(message, this); 8097 8098 switch (message.what) { 8099 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8100 handlePreDhcpSetup(); 8101 break; 8102 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 8103 mIpManager.completedPreDhcpAction(); 8104 break; 8105 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8106 handlePostDhcpSetup(); 8107 // We advance to mConnectedState because IpManager will also send a 8108 // CMD_IPV4_PROVISIONING_SUCCESS message, which calls handleIPv4Success(), 8109 // which calls updateLinkProperties, which then sends 8110 // CMD_IP_CONFIGURATION_SUCCESSFUL. 8111 // 8112 // In the event of failure, we transition to mDisconnectingState 8113 // similarly--via messages sent back from IpManager. 8114 break; 8115 case CMD_IPV4_PROVISIONING_SUCCESS: { 8116 handleIPv4Success((DhcpResults) message.obj); 8117 break; 8118 } 8119 case CMD_IPV4_PROVISIONING_FAILURE: { 8120 handleIPv4Failure(); 8121 break; 8122 } 8123 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8124 handleSuccessfulIpConfiguration(); 8125 mWifiMetrics.endConnectionEvent( 8126 WifiMetrics.ConnectionEvent.LLF_NONE, 8127 WifiMetricsProto.ConnectionEvent.HLF_NONE); 8128 sendConnectedState(); 8129 transitionTo(mConnectedState); 8130 break; 8131 case CMD_IP_CONFIGURATION_LOST: 8132 // Get Link layer stats so that we get fresh tx packet counters. 8133 getWifiLinkLayerStats(true); 8134 handleIpConfigurationLost(); 8135 transitionTo(mDisconnectingState); 8136 break; 8137 case CMD_IP_REACHABILITY_LOST: 8138 if (DBG && message.obj != null) log((String) message.obj); 8139 handleIpReachabilityLost(); 8140 transitionTo(mDisconnectingState); 8141 break; 8142 case CMD_DISCONNECT: 8143 mWifiNative.disconnect(); 8144 transitionTo(mDisconnectingState); 8145 break; 8146 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8147 if (message.arg1 == 1) { 8148 mWifiNative.disconnect(); 8149 mTemporarilyDisconnectWifi = true; 8150 transitionTo(mDisconnectingState); 8151 } 8152 break; 8153 case CMD_SET_OPERATIONAL_MODE: 8154 if (message.arg1 != CONNECT_MODE) { 8155 sendMessage(CMD_DISCONNECT); 8156 deferMessage(message); 8157 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8158 noteWifiDisabledWhileAssociated(); 8159 } 8160 } 8161 mWifiConfigStore. 8162 setAndEnableLastSelectedConfiguration( 8163 WifiConfiguration.INVALID_NETWORK_ID); 8164 break; 8165 case CMD_SET_COUNTRY_CODE: 8166 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8167 deferMessage(message); 8168 break; 8169 case CMD_START_SCAN: 8170 if (DBG) { 8171 logd("CMD_START_SCAN source " + message.arg1 8172 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8173 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8174 + " targetRoamBSSID=" + mTargetRoamBSSID 8175 + " RSSI=" + mWifiInfo.getRssi()); 8176 } 8177 if (message.arg1 == SCAN_ALARM_SOURCE) { 8178 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8179 // not be processed) and restart the scan if neede 8180 if (!getEnableAutoJoinWhenAssociated()) { 8181 return HANDLED; 8182 } 8183 boolean shouldScan = mScreenOn; 8184 8185 if (!checkAndRestartDelayedScan(message.arg2, 8186 shouldScan, 8187 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8188 null, null)) { 8189 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8190 logd("L2Connected CMD_START_SCAN source " 8191 + message.arg1 8192 + " " + message.arg2 + ", " + mDelayedScanCounter 8193 + " -> obsolete"); 8194 return HANDLED; 8195 } 8196 if (mP2pConnected.get()) { 8197 logd("L2Connected CMD_START_SCAN source " 8198 + message.arg1 8199 + " " + message.arg2 + ", " + mDelayedScanCounter 8200 + " ignore because P2P is connected"); 8201 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8202 return HANDLED; 8203 } 8204 boolean tryFullBandScan = false; 8205 boolean restrictChannelList = false; 8206 long now_ms = System.currentTimeMillis(); 8207 if (DBG) { 8208 logd("CMD_START_SCAN with age=" 8209 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8210 + " interval=" + fullBandConnectedTimeIntervalMilli 8211 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8212 } 8213 if (mWifiInfo != null) { 8214 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8215 (now_ms - lastFullBandConnectedTimeMilli) 8216 > fullBandConnectedTimeIntervalMilli) { 8217 if (DBG) { 8218 logd("CMD_START_SCAN try full band scan age=" 8219 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8220 + " interval=" + fullBandConnectedTimeIntervalMilli 8221 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8222 } 8223 tryFullBandScan = true; 8224 } 8225 8226 if (mWifiInfo.txSuccessRate > 8227 mWifiConfigStore.maxTxPacketForFullScans 8228 || mWifiInfo.rxSuccessRate > 8229 mWifiConfigStore.maxRxPacketForFullScans) { 8230 // Too much traffic at the interface, hence no full band scan 8231 if (DBG) { 8232 logd("CMD_START_SCAN " + 8233 "prevent full band scan due to pkt rate"); 8234 } 8235 tryFullBandScan = false; 8236 } 8237 8238 if (mWifiInfo.txSuccessRate > 8239 mWifiConfigStore.maxTxPacketForPartialScans 8240 || mWifiInfo.rxSuccessRate > 8241 mWifiConfigStore.maxRxPacketForPartialScans) { 8242 // Don't scan if lots of packets are being sent 8243 restrictChannelList = true; 8244 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8245 if (DBG) { 8246 logd("CMD_START_SCAN source " + message.arg1 8247 + " ...and ignore scans" 8248 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8249 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8250 } 8251 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8252 return HANDLED; 8253 } 8254 } 8255 } 8256 8257 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8258 if (DBG) { 8259 logd("CMD_START_SCAN full=" + 8260 tryFullBandScan); 8261 } 8262 if (currentConfiguration != null) { 8263 if (fullBandConnectedTimeIntervalMilli 8264 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8265 // Sanity 8266 fullBandConnectedTimeIntervalMilli 8267 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8268 } 8269 if (tryFullBandScan) { 8270 lastFullBandConnectedTimeMilli = now_ms; 8271 if (fullBandConnectedTimeIntervalMilli 8272 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8273 // Increase the interval 8274 fullBandConnectedTimeIntervalMilli 8275 = fullBandConnectedTimeIntervalMilli 8276 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8277 8278 if (DBG) { 8279 logd("CMD_START_SCAN bump interval =" 8280 + fullBandConnectedTimeIntervalMilli); 8281 } 8282 } 8283 handleScanRequest(message); 8284 } else { 8285 if (!startScanForConfiguration( 8286 currentConfiguration, restrictChannelList)) { 8287 if (DBG) { 8288 logd("starting scan, " + 8289 " did not find channels -> full"); 8290 } 8291 lastFullBandConnectedTimeMilli = now_ms; 8292 if (fullBandConnectedTimeIntervalMilli 8293 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8294 // Increase the interval 8295 fullBandConnectedTimeIntervalMilli 8296 = fullBandConnectedTimeIntervalMilli 8297 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8298 8299 if (DBG) { 8300 logd("CMD_START_SCAN bump interval =" 8301 + fullBandConnectedTimeIntervalMilli); 8302 } 8303 } 8304 handleScanRequest(message); 8305 } 8306 } 8307 8308 } else { 8309 logd("CMD_START_SCAN : connected mode and no configuration"); 8310 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8311 } 8312 } else { 8313 // Not scan alarm source 8314 return NOT_HANDLED; 8315 } 8316 break; 8317 /* Ignore connection to same network */ 8318 case WifiManager.CONNECT_NETWORK: 8319 int netId = message.arg1; 8320 if (mWifiInfo.getNetworkId() == netId) { 8321 break; 8322 } 8323 return NOT_HANDLED; 8324 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8325 mWifiInfo.setBSSID((String) message.obj); 8326 mLastNetworkId = message.arg1; 8327 mWifiInfo.setNetworkId(mLastNetworkId); 8328 if(!mLastBssid.equals((String) message.obj)) { 8329 mLastBssid = (String) message.obj; 8330 sendNetworkStateChangeBroadcast(mLastBssid); 8331 } 8332 break; 8333 case CMD_RSSI_POLL: 8334 if (message.arg1 == mRssiPollToken) { 8335 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8336 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8337 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8338 if (stats != null) { 8339 // Sanity check the results provided by driver 8340 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8341 && (stats.rssi_mgmt == 0 8342 || stats.beacon_rx == 0)) { 8343 stats = null; 8344 } 8345 } 8346 // Get Info and continue polling 8347 fetchRssiLinkSpeedAndFrequencyNative(); 8348 calculateWifiScore(stats); 8349 } 8350 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8351 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8352 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8353 } else { 8354 // Polling has completed 8355 } 8356 break; 8357 case CMD_ENABLE_RSSI_POLL: 8358 cleanWifiScore(); 8359 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8360 mEnableRssiPolling = (message.arg1 == 1); 8361 } else { 8362 mEnableRssiPolling = false; 8363 } 8364 mRssiPollToken++; 8365 if (mEnableRssiPolling) { 8366 // First poll 8367 fetchRssiLinkSpeedAndFrequencyNative(); 8368 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8369 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8370 } 8371 break; 8372 case WifiManager.RSSI_PKTCNT_FETCH: 8373 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8374 fetchRssiLinkSpeedAndFrequencyNative(); 8375 info.rssi = mWifiInfo.getRssi(); 8376 fetchPktcntNative(info); 8377 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8378 break; 8379 case CMD_DELAYED_NETWORK_DISCONNECT: 8380 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8381 8382 // Ignore if we are not debouncing 8383 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8384 + message.arg1); 8385 return HANDLED; 8386 } else { 8387 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8388 + message.arg1); 8389 8390 linkDebouncing = false; 8391 // If we are still debouncing while this message comes, 8392 // it means we were not able to reconnect within the alloted time 8393 // = LINK_FLAPPING_DEBOUNCE_MSEC 8394 // and thus, trigger a real disconnect 8395 handleNetworkDisconnect(); 8396 transitionTo(mDisconnectedState); 8397 } 8398 break; 8399 case CMD_ASSOCIATED_BSSID: 8400 if ((String) message.obj == null) { 8401 logw("Associated command w/o BSSID"); 8402 break; 8403 } 8404 mLastBssid = (String) message.obj; 8405 if (mLastBssid != null 8406 && (mWifiInfo.getBSSID() == null 8407 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8408 mWifiInfo.setBSSID((String) message.obj); 8409 sendNetworkStateChangeBroadcast(mLastBssid); 8410 } 8411 break; 8412 case CMD_START_RSSI_MONITORING_OFFLOAD: 8413 case CMD_RSSI_THRESHOLD_BREACH: 8414 byte currRssi = (byte) message.arg1; 8415 processRssiThreshold(currRssi, message.what); 8416 break; 8417 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8418 stopRssiMonitoringOffload(); 8419 break; 8420 case CMD_RESET_SIM_NETWORKS: 8421 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8422 WifiConfiguration config = 8423 mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 8424 if (mWifiConfigStore.isSimConfig(config)) { 8425 mWifiNative.disconnect(); 8426 transitionTo(mDisconnectingState); 8427 } 8428 } 8429 /* allow parent state to reset data for other networks */ 8430 return NOT_HANDLED; 8431 default: 8432 return NOT_HANDLED; 8433 } 8434 8435 return HANDLED; 8436 } 8437 } 8438 8439 class ObtainingIpState extends State { 8440 @Override 8441 public void enter() { 8442 if (DBG) { 8443 String key = ""; 8444 if (getCurrentWifiConfiguration() != null) { 8445 key = getCurrentWifiConfiguration().configKey(); 8446 } 8447 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8448 + " " + key + " " 8449 + " roam=" + mAutoRoaming 8450 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8451 + " watchdog= " + obtainingIpWatchdogCount); 8452 } 8453 8454 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8455 // We might still be roaming 8456 linkDebouncing = false; 8457 8458 // Send event to CM & network change broadcast 8459 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8460 8461 // We must clear the config BSSID, as the wifi chipset may decide to roam 8462 // from this point on and having the BSSID specified in the network block would 8463 // cause the roam to fail and the device to disconnect. 8464 clearCurrentConfigBSSID("ObtainingIpAddress"); 8465 8466 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8467 // We used to do DHCPv4 RENEWs on framework roams. 8468 // TODO: Investigate whether we should reinstitute this. 8469 // 8470 // When we get here after a roam, we will already have called 8471 // mIpManager.confirmConfiguration() to ensure we're on the 8472 // same network (in handling of SupplicantState.COMPLETED). 8473 if (!isRoaming()) { 8474 mIpManager.stop(); 8475 mIpManager.startProvisioning(); 8476 } 8477 obtainingIpWatchdogCount++; 8478 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8479 // Get Link layer stats so as we get fresh tx packet counters 8480 getWifiLinkLayerStats(true); 8481 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8482 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8483 } else { 8484 // Stop IpManager in case we're switching from static 8485 // configuration to DHCP. 8486 // 8487 // TODO: Only ever enter this state the first time we 8488 // connect to a network, never on changing from static 8489 // configuration to DHCP. When we transition from static 8490 // configuration to DHCP, we must tell ConnectivityService 8491 // that we're disconnected, because DHCP might take a long 8492 // time, during which connectivity APIs such as 8493 // getActiveNetworkInfo should not return CONNECTED. 8494 stopIpManager(); 8495 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8496 mLastNetworkId); 8497 if (config.ipAddress == null) { 8498 logd("Static IP lacks address"); 8499 sendMessage(CMD_IPV4_PROVISIONING_FAILURE); 8500 } else { 8501 mIpManager.startProvisioning(config); 8502 } 8503 } 8504 } 8505 8506 @Override 8507 public boolean processMessage(Message message) { 8508 logStateAndMessage(message, this); 8509 8510 switch(message.what) { 8511 case CMD_AUTO_CONNECT: 8512 case CMD_AUTO_ROAM: 8513 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8514 break; 8515 case WifiManager.SAVE_NETWORK: 8516 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8517 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8518 deferMessage(message); 8519 break; 8520 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8521 8522 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8523 mWifiMetrics.endConnectionEvent( 8524 WifiMetrics.ConnectionEvent.LLF_NETWORK_DISCONNECTION, 8525 WifiMetricsProto.ConnectionEvent.HLF_NONE); 8526 return NOT_HANDLED; 8527 case CMD_SET_HIGH_PERF_MODE: 8528 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8529 deferMessage(message); 8530 break; 8531 /* Defer scan request since we should not switch to other channels at DHCP */ 8532 case CMD_START_SCAN: 8533 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8534 deferMessage(message); 8535 break; 8536 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8537 if (message.arg1 == obtainingIpWatchdogCount) { 8538 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8539 + obtainingIpWatchdogCount); 8540 handleIpConfigurationLost(); 8541 transitionTo(mDisconnectingState); 8542 break; 8543 } 8544 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8545 break; 8546 default: 8547 return NOT_HANDLED; 8548 } 8549 return HANDLED; 8550 } 8551 } 8552 8553 private void sendConnectedState() { 8554 // If this network was explicitly selected by the user, evaluate whether to call 8555 // explicitlySelected() so the system can treat it appropriately. 8556 WifiConfiguration config = getCurrentWifiConfiguration(); 8557 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8558 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8559 if (DBG) { 8560 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8561 } 8562 if (prompt) { 8563 // Selected by the user via Settings or QuickSettings. If this network has Internet 8564 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8565 // really want to switch, or has already confirmed and selected "Don't ask again". 8566 if (DBG) { 8567 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8568 } 8569 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8570 } 8571 } 8572 8573 setNetworkDetailedState(DetailedState.CONNECTED); 8574 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8575 sendNetworkStateChangeBroadcast(mLastBssid); 8576 } 8577 8578 class RoamingState extends State { 8579 boolean mAssociated; 8580 @Override 8581 public void enter() { 8582 if (DBG) { 8583 log("RoamingState Enter" 8584 + " mScreenOn=" + mScreenOn ); 8585 } 8586 setScanAlarm(false); 8587 8588 // Make sure we disconnect if roaming fails 8589 roamWatchdogCount++; 8590 logd("Start Roam Watchdog " + roamWatchdogCount); 8591 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8592 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8593 mAssociated = false; 8594 } 8595 @Override 8596 public boolean processMessage(Message message) { 8597 logStateAndMessage(message, this); 8598 WifiConfiguration config; 8599 switch (message.what) { 8600 case CMD_IP_CONFIGURATION_LOST: 8601 config = getCurrentWifiConfiguration(); 8602 if (config != null) { 8603 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8604 mWifiConfigStore.noteRoamingFailure(config, 8605 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8606 } 8607 return NOT_HANDLED; 8608 case CMD_UNWANTED_NETWORK: 8609 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8610 return HANDLED; 8611 case CMD_SET_OPERATIONAL_MODE: 8612 if (message.arg1 != CONNECT_MODE) { 8613 deferMessage(message); 8614 } 8615 break; 8616 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8617 /** 8618 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8619 * before NETWORK_DISCONNECTION_EVENT 8620 * And there is an associated BSSID corresponding to our target BSSID, then 8621 * we have missed the network disconnection, transition to mDisconnectedState 8622 * and handle the rest of the events there. 8623 */ 8624 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8625 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8626 || stateChangeResult.state == SupplicantState.INACTIVE 8627 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8628 if (DBG) { 8629 log("STATE_CHANGE_EVENT in roaming state " 8630 + stateChangeResult.toString() ); 8631 } 8632 if (stateChangeResult.BSSID != null 8633 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8634 handleNetworkDisconnect(); 8635 transitionTo(mDisconnectedState); 8636 } 8637 } 8638 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8639 // We completed the layer2 roaming part 8640 mAssociated = true; 8641 if (stateChangeResult.BSSID != null) { 8642 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8643 } 8644 } 8645 break; 8646 case CMD_ROAM_WATCHDOG_TIMER: 8647 if (roamWatchdogCount == message.arg1) { 8648 if (DBG) log("roaming watchdog! -> disconnect"); 8649 mRoamFailCount++; 8650 handleNetworkDisconnect(); 8651 mWifiNative.disconnect(); 8652 transitionTo(mDisconnectedState); 8653 } 8654 break; 8655 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8656 if (mAssociated) { 8657 if (DBG) log("roaming and Network connection established"); 8658 mLastNetworkId = message.arg1; 8659 mLastBssid = (String) message.obj; 8660 mWifiInfo.setBSSID(mLastBssid); 8661 mWifiInfo.setNetworkId(mLastNetworkId); 8662 mWifiQualifiedNetworkSelector.enableBssidForQualitynetworkSelection( 8663 mLastBssid, true); 8664 sendNetworkStateChangeBroadcast(mLastBssid); 8665 transitionTo(mObtainingIpState); 8666 } else { 8667 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8668 } 8669 break; 8670 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8671 // Throw away but only if it corresponds to the network we're roaming to 8672 String bssid = (String) message.obj; 8673 if (true) { 8674 String target = ""; 8675 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8676 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8677 + " BSSID=" + bssid 8678 + " target=" + target); 8679 } 8680 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8681 handleNetworkDisconnect(); 8682 transitionTo(mDisconnectedState); 8683 } 8684 break; 8685 case WifiMonitor.SSID_TEMP_DISABLED: 8686 // Auth error while roaming 8687 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8688 + " id=" + Integer.toString(message.arg1) 8689 + " isRoaming=" + isRoaming() 8690 + " roam=" + mAutoRoaming); 8691 if (message.arg1 == mLastNetworkId) { 8692 config = getCurrentWifiConfiguration(); 8693 if (config != null) { 8694 mWifiLogger.captureBugReportData( 8695 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8696 mWifiConfigStore.noteRoamingFailure(config, 8697 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8698 } 8699 handleNetworkDisconnect(); 8700 transitionTo(mDisconnectingState); 8701 } 8702 return NOT_HANDLED; 8703 case CMD_START_SCAN: 8704 deferMessage(message); 8705 break; 8706 default: 8707 return NOT_HANDLED; 8708 } 8709 return HANDLED; 8710 } 8711 8712 @Override 8713 public void exit() { 8714 logd("WifiStateMachine: Leaving Roaming state"); 8715 } 8716 } 8717 8718 class ConnectedState extends State { 8719 @Override 8720 public void enter() { 8721 String address; 8722 updateDefaultRouteMacAddress(1000); 8723 if (DBG) { 8724 log("Enter ConnectedState " 8725 + " mScreenOn=" + mScreenOn 8726 + " scanperiod=" 8727 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8728 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8729 + mWifiConfigStore.enableHalBasedPno.get() 8730 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8731 } 8732 if (mScreenOn 8733 && getEnableAutoJoinWhenAssociated()) { 8734 if (useHalBasedAutoJoinOffload()) { 8735 startGScanConnectedModeOffload("connectedEnter"); 8736 } else { 8737 // restart scan alarm 8738 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8739 null, null); 8740 } 8741 } 8742 registerConnected(); 8743 lastConnectAttemptTimestamp = 0; 8744 targetWificonfiguration = null; 8745 // Paranoia 8746 linkDebouncing = false; 8747 8748 // Not roaming anymore 8749 mAutoRoaming = false; 8750 8751 if (testNetworkDisconnect) { 8752 testNetworkDisconnectCounter++; 8753 logd("ConnectedState Enter start disconnect test " + 8754 testNetworkDisconnectCounter); 8755 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8756 testNetworkDisconnectCounter, 0), 15000); 8757 } 8758 8759 // Reenable all networks, allow for hidden networks to be scanned 8760 mWifiConfigStore.enableAllNetworks(); 8761 8762 mLastDriverRoamAttempt = 0; 8763 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 8764 //startLazyRoam(); 8765 } 8766 @Override 8767 public boolean processMessage(Message message) { 8768 WifiConfiguration config = null; 8769 logStateAndMessage(message, this); 8770 8771 switch (message.what) { 8772 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8773 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8774 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8775 return HANDLED; 8776 } 8777 /* If we are still in Disconnected state after having discovered a valid 8778 * network this means autojoin didnt managed to associate to the network, 8779 * then restart PNO so as we will try associating to it again. 8780 */ 8781 if (useHalBasedAutoJoinOffload()) { 8782 if (mGScanStartTimeMilli == 0) { 8783 // If offload is not started, then start it... 8784 startGScanConnectedModeOffload("connectedRestart"); 8785 } else { 8786 // If offload is already started, then check if we need to increase 8787 // the scan period and restart the Gscan 8788 long now = System.currentTimeMillis(); 8789 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8790 && ((now - mGScanStartTimeMilli) 8791 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8792 && (mGScanPeriodMilli 8793 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8794 { 8795 startConnectedGScan("Connected restart gscan"); 8796 } 8797 } 8798 } 8799 break; 8800 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8801 updateAssociatedScanPermission(); 8802 break; 8803 case CMD_UNWANTED_NETWORK: 8804 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8805 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8806 mWifiNative.disconnect(); 8807 transitionTo(mDisconnectingState); 8808 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8809 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8810 Log.d(TAG, (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN 8811 ? "NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN" 8812 : "NETWORK_STATUS_UNWANTED_VALIDATION_FAILED")); 8813 config = getCurrentWifiConfiguration(); 8814 if (config != null) { 8815 // Disable autojoin 8816 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8817 config.validatedInternetAccess = false; 8818 // Clear last-selected status, as being last-selected also avoids 8819 // disabling auto-join. 8820 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8821 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 8822 WifiConfiguration.INVALID_NETWORK_ID); 8823 } 8824 mWifiConfigStore.updateNetworkSelectionStatus(config, 8825 WifiConfiguration.NetworkSelectionStatus 8826 .DISABLED_NO_INTERNET); 8827 } 8828 config.numNoInternetAccessReports += 1; 8829 mWifiConfigStore.writeKnownNetworkHistory(); 8830 } 8831 } 8832 return HANDLED; 8833 case CMD_NETWORK_STATUS: 8834 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8835 config = getCurrentWifiConfiguration(); 8836 if (config != null) { 8837 // re-enable autojoin 8838 config.numNoInternetAccessReports = 0; 8839 config.validatedInternetAccess = true; 8840 mWifiConfigStore.writeKnownNetworkHistory(); 8841 } 8842 } 8843 return HANDLED; 8844 case CMD_ACCEPT_UNVALIDATED: 8845 boolean accept = (message.arg1 != 0); 8846 config = getCurrentWifiConfiguration(); 8847 if (config != null) { 8848 config.noInternetAccessExpected = accept; 8849 } 8850 return HANDLED; 8851 case CMD_TEST_NETWORK_DISCONNECT: 8852 // Force a disconnect 8853 if (message.arg1 == testNetworkDisconnectCounter) { 8854 mWifiNative.disconnect(); 8855 } 8856 break; 8857 case CMD_ASSOCIATED_BSSID: 8858 // ASSOCIATING to a new BSSID while already connected, indicates 8859 // that driver is roaming 8860 mLastDriverRoamAttempt = System.currentTimeMillis(); 8861 String toBSSID = (String)message.obj; 8862 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8863 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8864 } 8865 return NOT_HANDLED; 8866 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8867 long lastRoam = 0; 8868 mWifiMetrics.endConnectionEvent( 8869 WifiMetrics.ConnectionEvent.LLF_NETWORK_DISCONNECTION, 8870 WifiMetricsProto.ConnectionEvent.HLF_NONE); 8871 if (mLastDriverRoamAttempt != 0) { 8872 // Calculate time since last driver roam attempt 8873 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8874 mLastDriverRoamAttempt = 0; 8875 } 8876 if (unexpectedDisconnectedReason(message.arg2)) { 8877 mWifiLogger.captureBugReportData( 8878 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8879 } 8880 config = getCurrentWifiConfiguration(); 8881 if (mScreenOn 8882 && !linkDebouncing 8883 && config != null 8884 && config.getNetworkSelectionStatus().isNetworkEnabled() 8885 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8886 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8887 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8888 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8889 && mWifiInfo.getRssi() > 8890 WifiQualifiedNetworkSelector.QUALIFIED_RSSI_24G_BAND) 8891 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8892 && mWifiInfo.getRssi() > 8893 mWifiConfigStore.thresholdQualifiedRssi5.get()))) { 8894 // Start de-bouncing the L2 disconnection: 8895 // this L2 disconnection might be spurious. 8896 // Hence we allow 7 seconds for the state machine to try 8897 // to reconnect, go thru the 8898 // roaming cycle and enter Obtaining IP address 8899 // before signalling the disconnect to ConnectivityService and L3 8900 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8901 linkDebouncing = true; 8902 8903 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8904 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8905 if (DBG) { 8906 log("NETWORK_DISCONNECTION_EVENT in connected state" 8907 + " BSSID=" + mWifiInfo.getBSSID() 8908 + " RSSI=" + mWifiInfo.getRssi() 8909 + " freq=" + mWifiInfo.getFrequency() 8910 + " reason=" + message.arg2 8911 + " -> debounce"); 8912 } 8913 return HANDLED; 8914 } else { 8915 if (DBG) { 8916 log("NETWORK_DISCONNECTION_EVENT in connected state" 8917 + " BSSID=" + mWifiInfo.getBSSID() 8918 + " RSSI=" + mWifiInfo.getRssi() 8919 + " freq=" + mWifiInfo.getFrequency() 8920 + " was debouncing=" + linkDebouncing 8921 + " reason=" + message.arg2 8922 + " Network Selection Status=" + (config == null ? "Unavailable" 8923 : config.getNetworkSelectionStatus().getNetworkStatusString())); 8924 } 8925 } 8926 break; 8927 case CMD_AUTO_ROAM: 8928 // Clear the driver roam indication since we are attempting a framework roam 8929 mLastDriverRoamAttempt = 0; 8930 8931 /* Connect command coming from auto-join */ 8932 ScanResult candidate = (ScanResult)message.obj; 8933 String bssid = "any"; 8934 if (candidate != null) { 8935 bssid = candidate.BSSID; 8936 } 8937 int netId = mLastNetworkId; 8938 config = getCurrentWifiConfiguration(); 8939 8940 8941 if (config == null) { 8942 loge("AUTO_ROAM and no config, bail out..."); 8943 break; 8944 } 8945 8946 logd("CMD_AUTO_ROAM sup state " 8947 + mSupplicantStateTracker.getSupplicantStateName() 8948 + " my state " + getCurrentState().getName() 8949 + " nid=" + Integer.toString(netId) 8950 + " config " + config.configKey() 8951 + " roam=" + Integer.toString(message.arg2) 8952 + " to " + bssid 8953 + " targetRoamBSSID " + mTargetRoamBSSID); 8954 8955 setTargetBssid(config, bssid); 8956 mTargetNetworkId = netId; 8957 // Make sure the network is enabled, since supplicant will not re-enable it 8958 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8959 8960 if (deferForUserInput(message, netId, false)) { 8961 break; 8962 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8963 WifiConfiguration.USER_BANNED) { 8964 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8965 WifiManager.NOT_AUTHORIZED); 8966 break; 8967 } 8968 8969 boolean ret = false; 8970 if (mLastNetworkId != netId) { 8971 mWifiMetrics.startConnectionEvent(mWifiInfo, config, 8972 WifiMetricsProto.ConnectionEvent.ROAM_UNRELATED); 8973 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8974 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8975 ret = true; 8976 } 8977 } else { 8978 mWifiMetrics.startConnectionEvent(mWifiInfo, config, 8979 WifiMetricsProto.ConnectionEvent.ROAM_ENTERPRISE); 8980 ret = mWifiNative.reassociate(); 8981 } 8982 if (ret) { 8983 lastConnectAttemptTimestamp = System.currentTimeMillis(); 8984 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8985 8986 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8987 mAutoRoaming = true; 8988 transitionTo(mRoamingState); 8989 8990 } else { 8991 loge("Failed to connect config: " + config + " netId: " + netId); 8992 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8993 WifiManager.ERROR); 8994 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8995 mWifiMetrics.endConnectionEvent( 8996 WifiMetrics.ConnectionEvent.LLF_CONNECT_NETWORK_FAILED, 8997 WifiMetricsProto.ConnectionEvent.HLF_NONE); 8998 break; 8999 } 9000 break; 9001 case CMD_START_IP_PACKET_OFFLOAD: { 9002 int slot = message.arg1; 9003 int intervalSeconds = message.arg2; 9004 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9005 byte[] dstMac; 9006 try { 9007 InetAddress gateway = RouteInfo.selectBestRoute( 9008 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9009 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9010 dstMac = macAddressFromString(dstMacStr); 9011 } catch (NullPointerException|IllegalArgumentException e) { 9012 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9013 mNetworkAgent.onPacketKeepaliveEvent(slot, 9014 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9015 break; 9016 } 9017 pkt.dstMac = dstMac; 9018 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9019 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9020 break; 9021 } 9022 default: 9023 return NOT_HANDLED; 9024 } 9025 return HANDLED; 9026 } 9027 9028 @Override 9029 public void exit() { 9030 logd("WifiStateMachine: Leaving Connected state"); 9031 setScanAlarm(false); 9032 mLastDriverRoamAttempt = 0; 9033 9034 stopLazyRoam(); 9035 9036 mWhiteListedSsids = null; 9037 } 9038 } 9039 9040 class DisconnectingState extends State { 9041 9042 @Override 9043 public void enter() { 9044 9045 if (PDBG) { 9046 logd(" Enter DisconnectingState State scan interval " 9047 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9048 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9049 + " screenOn=" + mScreenOn); 9050 } 9051 9052 // Make sure we disconnect: we enter this state prior to connecting to a new 9053 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9054 // event which in this case will be indicating that supplicant started to associate. 9055 // In some cases supplicant doesn't ignore the connect requests (it might not 9056 // find the target SSID in its cache), 9057 // Therefore we end up stuck that state, hence the need for the watchdog. 9058 disconnectingWatchdogCount++; 9059 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9060 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9061 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9062 } 9063 9064 @Override 9065 public boolean processMessage(Message message) { 9066 logStateAndMessage(message, this); 9067 switch (message.what) { 9068 case CMD_SET_OPERATIONAL_MODE: 9069 if (message.arg1 != CONNECT_MODE) { 9070 deferMessage(message); 9071 } 9072 break; 9073 case CMD_START_SCAN: 9074 deferMessage(message); 9075 return HANDLED; 9076 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9077 if (disconnectingWatchdogCount == message.arg1) { 9078 if (DBG) log("disconnecting watchdog! -> disconnect"); 9079 handleNetworkDisconnect(); 9080 transitionTo(mDisconnectedState); 9081 } 9082 break; 9083 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9084 /** 9085 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9086 * we have missed the network disconnection, transition to mDisconnectedState 9087 * and handle the rest of the events there 9088 */ 9089 deferMessage(message); 9090 handleNetworkDisconnect(); 9091 transitionTo(mDisconnectedState); 9092 break; 9093 default: 9094 return NOT_HANDLED; 9095 } 9096 return HANDLED; 9097 } 9098 } 9099 9100 class DisconnectedState extends State { 9101 @Override 9102 public void enter() { 9103 // We dont scan frequently if this is a temporary disconnect 9104 // due to p2p 9105 if (mTemporarilyDisconnectWifi) { 9106 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9107 return; 9108 } 9109 9110 if (PDBG) { 9111 logd(" Enter DisconnectedState scan interval " 9112 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9113 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9114 + " screenOn=" + mScreenOn 9115 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9116 + mWifiConfigStore.enableHalBasedPno.get()); 9117 } 9118 9119 /** clear the roaming state, if we were roaming, we failed */ 9120 mAutoRoaming = false; 9121 9122 if (useHalBasedAutoJoinOffload()) { 9123 startGScanDisconnectedModeOffload("disconnectedEnter"); 9124 } else { 9125 if (mScreenOn) { 9126 /** 9127 * screen lit and => start scan immediately 9128 */ 9129 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9130 } else { 9131 /** 9132 * screen dark and PNO supported => scan alarm disabled 9133 */ 9134 if (mBackgroundScanSupported) { 9135 /* If a regular scan result is pending, do not initiate background 9136 * scan until the scan results are returned. This is needed because 9137 * initiating a background scan will cancel the regular scan and 9138 * scan results will not be returned until background scanning is 9139 * cleared 9140 */ 9141 if (!mIsScanOngoing) { 9142 enableBackgroundScan(true); 9143 } 9144 } else { 9145 setScanAlarm(true); 9146 } 9147 } 9148 } 9149 9150 /** 9151 * If we have no networks saved, the supplicant stops doing the periodic scan. 9152 * The scans are useful to notify the user of the presence of an open network. 9153 * Note that these are not wake up scans. 9154 */ 9155 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9156 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9157 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9158 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9159 } 9160 9161 mDisconnectedTimeStamp = System.currentTimeMillis(); 9162 mDisconnectedPnoAlarmCount = 0; 9163 } 9164 @Override 9165 public boolean processMessage(Message message) { 9166 boolean ret = HANDLED; 9167 9168 logStateAndMessage(message, this); 9169 9170 switch (message.what) { 9171 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9172 if (mP2pConnected.get()) break; 9173 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9174 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9175 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9176 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9177 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9178 } 9179 break; 9180 case WifiManager.FORGET_NETWORK: 9181 case CMD_REMOVE_NETWORK: 9182 case CMD_REMOVE_APP_CONFIGURATIONS: 9183 case CMD_REMOVE_USER_CONFIGURATIONS: 9184 // Set up a delayed message here. After the forget/remove is handled 9185 // the handled delayed message will determine if there is a need to 9186 // scan and continue 9187 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9188 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9189 ret = NOT_HANDLED; 9190 break; 9191 case CMD_SET_OPERATIONAL_MODE: 9192 if (message.arg1 != CONNECT_MODE) { 9193 mOperationalMode = message.arg1; 9194 9195 mWifiConfigStore.disableAllNetworks(); 9196 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9197 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9198 setWifiState(WIFI_STATE_DISABLED); 9199 } 9200 transitionTo(mScanModeState); 9201 } 9202 mWifiConfigStore. 9203 setAndEnableLastSelectedConfiguration( 9204 WifiConfiguration.INVALID_NETWORK_ID); 9205 break; 9206 /* Ignore network disconnect */ 9207 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9208 // Interpret this as an L2 connection failure 9209 break; 9210 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9211 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9212 if (DBG) { 9213 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9214 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9215 + " debouncing=" + linkDebouncing); 9216 } 9217 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9218 /* ConnectModeState does the rest of the handling */ 9219 ret = NOT_HANDLED; 9220 break; 9221 case CMD_START_SCAN: 9222 if (!checkOrDeferScanAllowed(message)) { 9223 // The scan request was rescheduled 9224 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9225 return HANDLED; 9226 } 9227 if (message.arg1 == SCAN_ALARM_SOURCE) { 9228 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9229 // not be processed) and restart the scan 9230 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9231 if (mP2pConnected.get()) { 9232 period = (int) mFacade.getLongSetting(mContext, 9233 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9234 period); 9235 } 9236 if (!checkAndRestartDelayedScan(message.arg2, 9237 true, period, null, null)) { 9238 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9239 logd("Disconnected CMD_START_SCAN source " 9240 + message.arg1 9241 + " " + message.arg2 + ", " + mDelayedScanCounter 9242 + " -> obsolete"); 9243 return HANDLED; 9244 } 9245 /* Disable background scan temporarily during a regular scan */ 9246 enableBackgroundScan(false); 9247 handleScanRequest(message); 9248 ret = HANDLED; 9249 } else { 9250 9251 /* 9252 * The SCAN request is not handled in this state and 9253 * would eventually might/will get handled in the 9254 * parent's state. The PNO, if already enabled had to 9255 * get disabled before the SCAN trigger. Hence, stop 9256 * the PNO if already enabled in this state, though the 9257 * SCAN request is not handled(PNO disable before the 9258 * SCAN trigger in any other state is not the right 9259 * place to issue). 9260 */ 9261 9262 enableBackgroundScan(false); 9263 ret = NOT_HANDLED; 9264 } 9265 break; 9266 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9267 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9268 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9269 return HANDLED; 9270 } 9271 /* If we are still in Disconnected state after having discovered a valid 9272 * network this means autojoin didnt managed to associate to the network, 9273 * then restart PNO so as we will try associating to it again. 9274 */ 9275 if (useHalBasedAutoJoinOffload()) { 9276 if (mGScanStartTimeMilli == 0) { 9277 // If offload is not started, then start it... 9278 startGScanDisconnectedModeOffload("disconnectedRestart"); 9279 } else { 9280 // If offload is already started, then check if we need to increase 9281 // the scan period and restart the Gscan 9282 long now = System.currentTimeMillis(); 9283 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9284 && ((now - mGScanStartTimeMilli) 9285 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9286 && (mGScanPeriodMilli 9287 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9288 { 9289 startDisconnectedGScan("disconnected restart gscan"); 9290 } 9291 } 9292 } else { 9293 // If we are still disconnected for a short while after having found a 9294 // network thru PNO, then something went wrong, and for some reason we 9295 // couldn't join this network. 9296 // It might be due to a SW bug in supplicant or the wifi stack, or an 9297 // interoperability issue, or we try to join a bad bss and failed 9298 // In that case we want to restart pno so as to make sure that we will 9299 // attempt again to join that network. 9300 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9301 enableBackgroundScan(false); 9302 enableBackgroundScan(true); 9303 } 9304 return HANDLED; 9305 } 9306 break; 9307 case WifiMonitor.SCAN_RESULTS_EVENT: 9308 case WifiMonitor.SCAN_FAILED_EVENT: 9309 /* Re-enable background scan when a pending scan result is received */ 9310 if (!mScreenOn && mIsScanOngoing 9311 && mBackgroundScanSupported 9312 && !useHalBasedAutoJoinOffload()) { 9313 enableBackgroundScan(true); 9314 } else if (!mScreenOn 9315 && !mIsScanOngoing 9316 && mBackgroundScanSupported 9317 && !useHalBasedAutoJoinOffload()) { 9318 // We receive scan results from legacy PNO, hence restart the PNO alarm 9319 int delay; 9320 if (mDisconnectedPnoAlarmCount < 1) { 9321 delay = 30 * 1000; 9322 } else if (mDisconnectedPnoAlarmCount < 3) { 9323 delay = 60 * 1000; 9324 } else { 9325 delay = 360 * 1000; 9326 } 9327 mDisconnectedPnoAlarmCount++; 9328 if (VDBG) { 9329 logd("Starting PNO alarm " + delay); 9330 } 9331 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9332 System.currentTimeMillis() + delay, 9333 mPnoIntent); 9334 } 9335 /* Handled in parent state */ 9336 ret = NOT_HANDLED; 9337 break; 9338 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9339 NetworkInfo info = (NetworkInfo) message.obj; 9340 mP2pConnected.set(info.isConnected()); 9341 if (mP2pConnected.get()) { 9342 int defaultInterval = mContext.getResources().getInteger( 9343 R.integer.config_wifi_scan_interval_p2p_connected); 9344 long scanIntervalMs = mFacade.getLongSetting(mContext, 9345 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9346 defaultInterval); 9347 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9348 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9349 if (DBG) log("Turn on scanning after p2p disconnected"); 9350 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9351 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9352 } else { 9353 // If P2P is not connected and there are saved networks, then restart 9354 // scanning at the normal period. This is necessary because scanning might 9355 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9356 // was set to zero. 9357 if (useHalBasedAutoJoinOffload()) { 9358 startGScanDisconnectedModeOffload("p2pRestart"); 9359 } else { 9360 startDelayedScan( 9361 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9362 null, null); 9363 } 9364 } 9365 break; 9366 case CMD_RECONNECT: 9367 case CMD_REASSOCIATE: 9368 if (mTemporarilyDisconnectWifi) { 9369 // Drop a third party reconnect/reassociate if STA is 9370 // temporarily disconnected for p2p 9371 break; 9372 } else { 9373 // ConnectModeState handles it 9374 ret = NOT_HANDLED; 9375 } 9376 break; 9377 case CMD_SCREEN_STATE_CHANGED: 9378 handleScreenStateChanged(message.arg1 != 0); 9379 break; 9380 default: 9381 ret = NOT_HANDLED; 9382 } 9383 return ret; 9384 } 9385 9386 @Override 9387 public void exit() { 9388 mDisconnectedPnoAlarmCount = 0; 9389 /* No need for a background scan upon exit from a disconnected state */ 9390 enableBackgroundScan(false); 9391 setScanAlarm(false); 9392 mAlarmManager.cancel(mPnoIntent); 9393 } 9394 } 9395 9396 class WpsRunningState extends State { 9397 // Tracks the source to provide a reply 9398 private Message mSourceMessage; 9399 @Override 9400 public void enter() { 9401 mSourceMessage = Message.obtain(getCurrentMessage()); 9402 } 9403 @Override 9404 public boolean processMessage(Message message) { 9405 logStateAndMessage(message, this); 9406 9407 switch (message.what) { 9408 case WifiMonitor.WPS_SUCCESS_EVENT: 9409 // Ignore intermediate success, wait for full connection 9410 break; 9411 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9412 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9413 mSourceMessage.recycle(); 9414 mSourceMessage = null; 9415 deferMessage(message); 9416 transitionTo(mDisconnectedState); 9417 break; 9418 case WifiMonitor.WPS_OVERLAP_EVENT: 9419 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9420 WifiManager.WPS_OVERLAP_ERROR); 9421 mSourceMessage.recycle(); 9422 mSourceMessage = null; 9423 transitionTo(mDisconnectedState); 9424 break; 9425 case WifiMonitor.WPS_FAIL_EVENT: 9426 // Arg1 has the reason for the failure 9427 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9428 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9429 mSourceMessage.recycle(); 9430 mSourceMessage = null; 9431 transitionTo(mDisconnectedState); 9432 } else { 9433 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9434 } 9435 break; 9436 case WifiMonitor.WPS_TIMEOUT_EVENT: 9437 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9438 WifiManager.WPS_TIMED_OUT); 9439 mSourceMessage.recycle(); 9440 mSourceMessage = null; 9441 transitionTo(mDisconnectedState); 9442 break; 9443 case WifiManager.START_WPS: 9444 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9445 break; 9446 case WifiManager.CANCEL_WPS: 9447 if (mWifiNative.cancelWps()) { 9448 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9449 } else { 9450 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9451 } 9452 transitionTo(mDisconnectedState); 9453 break; 9454 /** 9455 * Defer all commands that can cause connections to a different network 9456 * or put the state machine out of connect mode 9457 */ 9458 case CMD_STOP_DRIVER: 9459 case CMD_SET_OPERATIONAL_MODE: 9460 case WifiManager.CONNECT_NETWORK: 9461 case CMD_ENABLE_NETWORK: 9462 case CMD_RECONNECT: 9463 case CMD_REASSOCIATE: 9464 case CMD_ENABLE_ALL_NETWORKS: 9465 deferMessage(message); 9466 break; 9467 case CMD_AUTO_CONNECT: 9468 case CMD_AUTO_ROAM: 9469 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9470 return HANDLED; 9471 case CMD_START_SCAN: 9472 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9473 return HANDLED; 9474 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9475 if (DBG) log("Network connection lost"); 9476 handleNetworkDisconnect(); 9477 break; 9478 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9479 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9480 break; 9481 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9482 // Disregard auth failure events during WPS connection. The 9483 // EAP sequence is retried several times, and there might be 9484 // failures (especially for wps pin). We will get a WPS_XXX 9485 // event at the end of the sequence anyway. 9486 if (DBG) log("Ignore auth failure during WPS connection"); 9487 break; 9488 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9489 // Throw away supplicant state changes when WPS is running. 9490 // We will start getting supplicant state changes once we get 9491 // a WPS success or failure 9492 break; 9493 default: 9494 return NOT_HANDLED; 9495 } 9496 return HANDLED; 9497 } 9498 9499 @Override 9500 public void exit() { 9501 mWifiConfigStore.enableAllNetworks(); 9502 mWifiConfigStore.loadConfiguredNetworks(); 9503 } 9504 } 9505 9506 class SoftApStartingState extends State { 9507 @Override 9508 public void enter() { 9509 final Message message = getCurrentMessage(); 9510 if (message.what == CMD_START_AP) { 9511 WifiConfiguration config = (WifiConfiguration) message.obj; 9512 9513 if (config == null) { 9514 /** 9515 * Configuration not provided in the command, fallback to use the current 9516 * configuration. 9517 */ 9518 config = mWifiApConfigStore.getApConfiguration(); 9519 } else { 9520 /* Update AP configuration. */ 9521 mWifiApConfigStore.setApConfiguration(config); 9522 } 9523 startSoftApWithConfig(config); 9524 } else { 9525 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9526 } 9527 } 9528 @Override 9529 public boolean processMessage(Message message) { 9530 logStateAndMessage(message, this); 9531 9532 switch(message.what) { 9533 case CMD_START_SUPPLICANT: 9534 case CMD_STOP_SUPPLICANT: 9535 case CMD_START_AP: 9536 case CMD_STOP_AP: 9537 case CMD_START_DRIVER: 9538 case CMD_STOP_DRIVER: 9539 case CMD_SET_OPERATIONAL_MODE: 9540 case CMD_SET_COUNTRY_CODE: 9541 case CMD_SET_FREQUENCY_BAND: 9542 case CMD_START_PACKET_FILTERING: 9543 case CMD_STOP_PACKET_FILTERING: 9544 case CMD_TETHER_STATE_CHANGE: 9545 deferMessage(message); 9546 break; 9547 case CMD_START_AP_SUCCESS: 9548 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9549 transitionTo(mSoftApStartedState); 9550 break; 9551 case CMD_START_AP_FAILURE: 9552 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9553 transitionTo(mInitialState); 9554 break; 9555 default: 9556 return NOT_HANDLED; 9557 } 9558 return HANDLED; 9559 } 9560 } 9561 9562 class SoftApStartedState extends State { 9563 @Override 9564 public boolean processMessage(Message message) { 9565 logStateAndMessage(message, this); 9566 9567 switch(message.what) { 9568 case CMD_STOP_AP: 9569 if (DBG) log("Stopping Soft AP"); 9570 /* We have not tethered at this point, so we just shutdown soft Ap */ 9571 try { 9572 mNwService.stopAccessPoint(mInterfaceName); 9573 } catch(Exception e) { 9574 loge("Exception in stopAccessPoint()"); 9575 } 9576 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9577 transitionTo(mInitialState); 9578 break; 9579 case CMD_START_AP: 9580 // Ignore a start on a running access point 9581 break; 9582 // Fail client mode operation when soft AP is enabled 9583 case CMD_START_SUPPLICANT: 9584 loge("Cannot start supplicant with a running soft AP"); 9585 setWifiState(WIFI_STATE_UNKNOWN); 9586 break; 9587 case CMD_TETHER_STATE_CHANGE: 9588 TetherStateChange stateChange = (TetherStateChange) message.obj; 9589 if (startTethering(stateChange.available)) { 9590 transitionTo(mTetheringState); 9591 } 9592 break; 9593 default: 9594 return NOT_HANDLED; 9595 } 9596 return HANDLED; 9597 } 9598 } 9599 9600 class TetheringState extends State { 9601 @Override 9602 public void enter() { 9603 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9604 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9605 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9606 } 9607 @Override 9608 public boolean processMessage(Message message) { 9609 logStateAndMessage(message, this); 9610 9611 switch(message.what) { 9612 case CMD_TETHER_STATE_CHANGE: 9613 TetherStateChange stateChange = (TetherStateChange) message.obj; 9614 if (isWifiTethered(stateChange.active)) { 9615 transitionTo(mTetheredState); 9616 } 9617 return HANDLED; 9618 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9619 if (message.arg1 == mTetherToken) { 9620 loge("Failed to get tether update, shutdown soft access point"); 9621 transitionTo(mSoftApStartedState); 9622 // Needs to be first thing handled 9623 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9624 } 9625 break; 9626 case CMD_START_SUPPLICANT: 9627 case CMD_STOP_SUPPLICANT: 9628 case CMD_START_AP: 9629 case CMD_STOP_AP: 9630 case CMD_START_DRIVER: 9631 case CMD_STOP_DRIVER: 9632 case CMD_SET_OPERATIONAL_MODE: 9633 case CMD_SET_COUNTRY_CODE: 9634 case CMD_SET_FREQUENCY_BAND: 9635 case CMD_START_PACKET_FILTERING: 9636 case CMD_STOP_PACKET_FILTERING: 9637 deferMessage(message); 9638 break; 9639 default: 9640 return NOT_HANDLED; 9641 } 9642 return HANDLED; 9643 } 9644 } 9645 9646 class TetheredState extends State { 9647 @Override 9648 public boolean processMessage(Message message) { 9649 logStateAndMessage(message, this); 9650 9651 switch(message.what) { 9652 case CMD_TETHER_STATE_CHANGE: 9653 TetherStateChange stateChange = (TetherStateChange) message.obj; 9654 if (!isWifiTethered(stateChange.active)) { 9655 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9656 setHostApRunning(null, false); 9657 setHostApRunning(null, true); 9658 } 9659 return HANDLED; 9660 case CMD_STOP_AP: 9661 if (DBG) log("Untethering before stopping AP"); 9662 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9663 stopTethering(); 9664 transitionTo(mUntetheringState); 9665 // More work to do after untethering 9666 deferMessage(message); 9667 break; 9668 default: 9669 return NOT_HANDLED; 9670 } 9671 return HANDLED; 9672 } 9673 } 9674 9675 class UntetheringState extends State { 9676 @Override 9677 public void enter() { 9678 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9679 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9680 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9681 9682 } 9683 @Override 9684 public boolean processMessage(Message message) { 9685 logStateAndMessage(message, this); 9686 9687 switch(message.what) { 9688 case CMD_TETHER_STATE_CHANGE: 9689 TetherStateChange stateChange = (TetherStateChange) message.obj; 9690 9691 /* Wait till wifi is untethered */ 9692 if (isWifiTethered(stateChange.active)) break; 9693 9694 transitionTo(mSoftApStartedState); 9695 break; 9696 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9697 if (message.arg1 == mTetherToken) { 9698 loge("Failed to get tether update, force stop access point"); 9699 transitionTo(mSoftApStartedState); 9700 } 9701 break; 9702 case CMD_START_SUPPLICANT: 9703 case CMD_STOP_SUPPLICANT: 9704 case CMD_START_AP: 9705 case CMD_STOP_AP: 9706 case CMD_START_DRIVER: 9707 case CMD_STOP_DRIVER: 9708 case CMD_SET_OPERATIONAL_MODE: 9709 case CMD_SET_COUNTRY_CODE: 9710 case CMD_SET_FREQUENCY_BAND: 9711 case CMD_START_PACKET_FILTERING: 9712 case CMD_STOP_PACKET_FILTERING: 9713 deferMessage(message); 9714 break; 9715 default: 9716 return NOT_HANDLED; 9717 } 9718 return HANDLED; 9719 } 9720 } 9721 9722 /** 9723 * State machine initiated requests can have replyTo set to null indicating 9724 * there are no recepients, we ignore those reply actions. 9725 */ 9726 private void replyToMessage(Message msg, int what) { 9727 if (msg.replyTo == null) return; 9728 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9729 mReplyChannel.replyToMessage(msg, dstMsg); 9730 } 9731 9732 private void replyToMessage(Message msg, int what, int arg1) { 9733 if (msg.replyTo == null) return; 9734 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9735 dstMsg.arg1 = arg1; 9736 mReplyChannel.replyToMessage(msg, dstMsg); 9737 } 9738 9739 private void replyToMessage(Message msg, int what, Object obj) { 9740 if (msg.replyTo == null) return; 9741 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9742 dstMsg.obj = obj; 9743 mReplyChannel.replyToMessage(msg, dstMsg); 9744 } 9745 9746 /** 9747 * arg2 on the source message has a unique id that needs to be retained in replies 9748 * to match the request 9749 * <p>see WifiManager for details 9750 */ 9751 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9752 Message msg = Message.obtain(); 9753 msg.what = what; 9754 msg.arg2 = srcMsg.arg2; 9755 return msg; 9756 } 9757 9758 /** 9759 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9760 * @param msg Must have a WifiConfiguration obj to succeed 9761 */ 9762 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9763 WifiConfiguration config) { 9764 if (config != null && config.preSharedKey != null) { 9765 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9766 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9767 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9768 wifiCredentialEventType); 9769 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9770 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9771 } 9772 } 9773 9774 private static int parseHex(char ch) { 9775 if ('0' <= ch && ch <= '9') { 9776 return ch - '0'; 9777 } else if ('a' <= ch && ch <= 'f') { 9778 return ch - 'a' + 10; 9779 } else if ('A' <= ch && ch <= 'F') { 9780 return ch - 'A' + 10; 9781 } else { 9782 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9783 } 9784 } 9785 9786 private byte[] parseHex(String hex) { 9787 /* This only works for good input; don't throw bad data at it */ 9788 if (hex == null) { 9789 return new byte[0]; 9790 } 9791 9792 if (hex.length() % 2 != 0) { 9793 throw new NumberFormatException(hex + " is not a valid hex string"); 9794 } 9795 9796 byte[] result = new byte[(hex.length())/2 + 1]; 9797 result[0] = (byte) ((hex.length())/2); 9798 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9799 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9800 byte b = (byte) (val & 0xFF); 9801 result[j] = b; 9802 } 9803 9804 return result; 9805 } 9806 9807 private static String makeHex(byte[] bytes) { 9808 StringBuilder sb = new StringBuilder(); 9809 for (byte b : bytes) { 9810 sb.append(String.format("%02x", b)); 9811 } 9812 return sb.toString(); 9813 } 9814 9815 private static String makeHex(byte[] bytes, int from, int len) { 9816 StringBuilder sb = new StringBuilder(); 9817 for (int i = 0; i < len; i++) { 9818 sb.append(String.format("%02x", bytes[from+i])); 9819 } 9820 return sb.toString(); 9821 } 9822 9823 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9824 9825 int len = array1.length + array2.length + array3.length; 9826 9827 if (array1.length != 0) { 9828 len++; /* add another byte for size */ 9829 } 9830 9831 if (array2.length != 0) { 9832 len++; /* add another byte for size */ 9833 } 9834 9835 if (array3.length != 0) { 9836 len++; /* add another byte for size */ 9837 } 9838 9839 byte[] result = new byte[len]; 9840 9841 int index = 0; 9842 if (array1.length != 0) { 9843 result[index] = (byte) (array1.length & 0xFF); 9844 index++; 9845 for (byte b : array1) { 9846 result[index] = b; 9847 index++; 9848 } 9849 } 9850 9851 if (array2.length != 0) { 9852 result[index] = (byte) (array2.length & 0xFF); 9853 index++; 9854 for (byte b : array2) { 9855 result[index] = b; 9856 index++; 9857 } 9858 } 9859 9860 if (array3.length != 0) { 9861 result[index] = (byte) (array3.length & 0xFF); 9862 index++; 9863 for (byte b : array3) { 9864 result[index] = b; 9865 index++; 9866 } 9867 } 9868 return result; 9869 } 9870 9871 private static byte[] concatHex(byte[] array1, byte[] array2) { 9872 9873 int len = array1.length + array2.length; 9874 9875 byte[] result = new byte[len]; 9876 9877 int index = 0; 9878 if (array1.length != 0) { 9879 for (byte b : array1) { 9880 result[index] = b; 9881 index++; 9882 } 9883 } 9884 9885 if (array2.length != 0) { 9886 for (byte b : array2) { 9887 result[index] = b; 9888 index++; 9889 } 9890 } 9891 9892 return result; 9893 } 9894 9895 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9896 if (targetWificonfiguration == null 9897 || targetWificonfiguration.networkId == requestData.networkId) { 9898 logd("id matches targetWifiConfiguration"); 9899 } else { 9900 logd("id does not match targetWifiConfiguration"); 9901 return; 9902 } 9903 9904 TelephonyManager tm = (TelephonyManager) 9905 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9906 9907 if (tm != null) { 9908 StringBuilder sb = new StringBuilder(); 9909 for (String challenge : requestData.data) { 9910 9911 if (challenge == null || challenge.isEmpty()) 9912 continue; 9913 logd("RAND = " + challenge); 9914 9915 byte[] rand = null; 9916 try { 9917 rand = parseHex(challenge); 9918 } catch (NumberFormatException e) { 9919 loge("malformed challenge"); 9920 continue; 9921 } 9922 9923 String base64Challenge = android.util.Base64.encodeToString( 9924 rand, android.util.Base64.NO_WRAP); 9925 /* 9926 * First, try with appType = 2 => USIM according to 9927 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9928 */ 9929 int appType = 2; 9930 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9931 if (tmResponse == null) { 9932 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9933 * appType = 1 => SIM 9934 */ 9935 appType = 1; 9936 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9937 } 9938 logv("Raw Response - " + tmResponse); 9939 9940 if (tmResponse != null && tmResponse.length() > 4) { 9941 byte[] result = android.util.Base64.decode(tmResponse, 9942 android.util.Base64.DEFAULT); 9943 logv("Hex Response -" + makeHex(result)); 9944 int sres_len = result[0]; 9945 String sres = makeHex(result, 1, sres_len); 9946 int kc_offset = 1+sres_len; 9947 int kc_len = result[kc_offset]; 9948 String kc = makeHex(result, 1 + kc_offset, kc_len); 9949 sb.append(":" + kc + ":" + sres); 9950 logv("kc:" + kc + " sres:" + sres); 9951 9952 String response = sb.toString(); 9953 logv("Supplicant Response -" + response); 9954 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9955 } else { 9956 loge("bad response - " + tmResponse); 9957 mWifiNative.simAuthFailedResponse(requestData.networkId); 9958 } 9959 } 9960 9961 } else { 9962 loge("could not get telephony manager"); 9963 mWifiNative.simAuthFailedResponse(requestData.networkId); 9964 } 9965 } 9966 9967 void handle3GAuthRequest(SimAuthRequestData requestData) { 9968 StringBuilder sb = new StringBuilder(); 9969 byte[] rand = null; 9970 byte[] authn = null; 9971 String res_type = "UMTS-AUTH"; 9972 9973 if (targetWificonfiguration == null 9974 || targetWificonfiguration.networkId == requestData.networkId) { 9975 logd("id matches targetWifiConfiguration"); 9976 } else { 9977 logd("id does not match targetWifiConfiguration"); 9978 return; 9979 } 9980 if (requestData.data.length == 2) { 9981 try { 9982 rand = parseHex(requestData.data[0]); 9983 authn = parseHex(requestData.data[1]); 9984 } catch (NumberFormatException e) { 9985 loge("malformed challenge"); 9986 } 9987 } else { 9988 loge("malformed challenge"); 9989 } 9990 9991 String tmResponse = ""; 9992 if (rand != null && authn != null) { 9993 String base64Challenge = android.util.Base64.encodeToString( 9994 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9995 9996 TelephonyManager tm = (TelephonyManager) 9997 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9998 if (tm != null) { 9999 int appType = 2; // 2 => USIM 10000 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10001 logv("Raw Response - " + tmResponse); 10002 } else { 10003 loge("could not get telephony manager"); 10004 } 10005 } 10006 10007 boolean good_response = false; 10008 if (tmResponse != null && tmResponse.length() > 4) { 10009 byte[] result = android.util.Base64.decode(tmResponse, 10010 android.util.Base64.DEFAULT); 10011 loge("Hex Response - " + makeHex(result)); 10012 byte tag = result[0]; 10013 if (tag == (byte) 0xdb) { 10014 logv("successful 3G authentication "); 10015 int res_len = result[1]; 10016 String res = makeHex(result, 2, res_len); 10017 int ck_len = result[res_len + 2]; 10018 String ck = makeHex(result, res_len + 3, ck_len); 10019 int ik_len = result[res_len + ck_len + 3]; 10020 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10021 sb.append(":" + ik + ":" + ck + ":" + res); 10022 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10023 good_response = true; 10024 } else if (tag == (byte) 0xdc) { 10025 loge("synchronisation failure"); 10026 int auts_len = result[1]; 10027 String auts = makeHex(result, 2, auts_len); 10028 res_type = "UMTS-AUTS"; 10029 sb.append(":" + auts); 10030 logv("auts:" + auts); 10031 good_response = true; 10032 } else { 10033 loge("bad response - unknown tag = " + tag); 10034 } 10035 } else { 10036 loge("bad response - " + tmResponse); 10037 } 10038 10039 if (good_response) { 10040 String response = sb.toString(); 10041 logv("Supplicant Response -" + response); 10042 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10043 } else { 10044 mWifiNative.umtsAuthFailedResponse(requestData.networkId); 10045 } 10046 } 10047 10048 public int getCurrentUserId() { 10049 return mCurrentUserId; 10050 } 10051 10052 /** 10053 * @param reason reason code from supplicant on network disconnected event 10054 * @return true if this is a suspicious disconnect 10055 */ 10056 static boolean unexpectedDisconnectedReason(int reason) { 10057 return reason == 2 // PREV_AUTH_NOT_VALID 10058 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10059 || reason == 7 // FRAME_FROM_NONASSOC_STA 10060 || reason == 8 // STA_HAS_LEFT 10061 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10062 || reason == 14 // MICHAEL_MIC_FAILURE 10063 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10064 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10065 || reason == 18 // GROUP_CIPHER_NOT_VALID 10066 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10067 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10068 || reason == 34; // DISASSOC_LOW_ACK 10069 } 10070 10071 /** 10072 * Update WifiMetrics before dumping 10073 */ 10074 void updateWifiMetrics() { 10075 int numSavedNetworks = mWifiConfigStore.getConfiguredNetworksSize(); 10076 int numOpenNetworks = 0; 10077 int numPersonalNetworks = 0; 10078 int numEnterpriseNetworks = 0; 10079 int numNetworksAddedByUser = 0; 10080 int numNetworksAddedByApps = 0; 10081 for (WifiConfiguration config : mWifiConfigStore.getConfiguredNetworks()) { 10082 if (config.allowedAuthAlgorithms.get(WifiConfiguration.AuthAlgorithm.OPEN)) { 10083 numOpenNetworks++; 10084 } else if (config.isEnterprise()) { 10085 numEnterpriseNetworks++; 10086 } else { 10087 numPersonalNetworks++; 10088 } 10089 if (config.selfAdded) { 10090 numNetworksAddedByUser++; 10091 } else { 10092 numNetworksAddedByApps++; 10093 } 10094 } 10095 mWifiMetrics.setNumSavedNetworks(numSavedNetworks); 10096 mWifiMetrics.setNumOpenNetworks(numOpenNetworks); 10097 mWifiMetrics.setNumPersonalNetworks(numPersonalNetworks); 10098 mWifiMetrics.setNumEnterpriseNetworks(numEnterpriseNetworks); 10099 mWifiMetrics.setNumNetworksAddedByUser(numNetworksAddedByUser); 10100 mWifiMetrics.setNumNetworksAddedByApps(numNetworksAddedByApps); 10101 10102 /* <TODO> decide how to access WifiServiecImpl.isLocationEnabled() or if to do it manually 10103 mWifiMetrics.setIsLocationEnabled(Settings.Secure.getInt( 10104 mContext.getContentResolver(), 10105 Settings.Secure.LOCATION_MODE, Settings.Secure.LOCATION_MODE_OFF) 10106 != Settings.Secure.LOCATION_MODE_OFF); 10107 */ 10108 10109 /* <TODO> decide how statemachine will access WifiSettingsStore 10110 mWifiMetrics.setIsScanningAlwaysEnabled(mSettingsStore.isScanningAlwaysAvailable()); 10111 */ 10112 } 10113 10114 private static String getLinkPropertiesSummary(LinkProperties lp) { 10115 List<String> attributes = new ArrayList(6); 10116 if (lp.hasIPv4Address()) { 10117 attributes.add("v4"); 10118 } 10119 if (lp.hasIPv4DefaultRoute()) { 10120 attributes.add("v4r"); 10121 } 10122 if (lp.hasIPv4DnsServer()) { 10123 attributes.add("v4dns"); 10124 } 10125 if (lp.hasGlobalIPv6Address()) { 10126 attributes.add("v6"); 10127 } 10128 if (lp.hasIPv6DefaultRoute()) { 10129 attributes.add("v6r"); 10130 } 10131 if (lp.hasIPv6DnsServer()) { 10132 attributes.add("v6dns"); 10133 } 10134 10135 // TODO: Replace with String.join(" ", attributes) once we're fully on JDK 8. 10136 StringBuilder sb = new StringBuilder(); 10137 boolean first = true; 10138 for (String attr : attributes) { 10139 if (!first) { 10140 sb.append(" "); 10141 } else { 10142 first = false; 10143 } 10144 sb.append(attr); 10145 } 10146 return sb.toString(); 10147 } 10148 10149 /** 10150 * Try to connect to the network of candidate. According to the current connected network, this 10151 * API determines whether no action, disconnect and connect, or roaming. 10152 * 10153 * @param candidate the candidate network to connect to 10154 */ 10155 private void tryToConnectToNetwork(WifiConfiguration candidate) { 10156 if (candidate == null) { 10157 if (DBG) { 10158 Log.d(TAG, "Try to connect to null, give up"); 10159 } 10160 return; 10161 } 10162 10163 ScanResult scanResultCandidate = candidate.getNetworkSelectionStatus().getCandidate(); 10164 if (scanResultCandidate == null) { 10165 Log.e(TAG, "tryToConnectToNetwork: bad candidate. Network:" + candidate 10166 + " scanresult: " + scanResultCandidate); 10167 return; 10168 } 10169 10170 String targetBssid = scanResultCandidate.BSSID; 10171 String targetAssociationId = candidate.SSID + " : " + targetBssid; 10172 if (targetBssid != null && targetBssid.equals(mWifiInfo.getBSSID())) { 10173 if (DBG) { 10174 Log.d(TAG, "tryToConnectToNetwork: Already connect to" + targetAssociationId); 10175 } 10176 return; 10177 } 10178 10179 WifiConfiguration currentConnectedNetwork = mWifiConfigStore 10180 .getWifiConfiguration(mWifiInfo.getNetworkId()); 10181 String currentAssociationId = (currentConnectedNetwork == null) ? "Disconnected" : 10182 (mWifiInfo.getSSID() + " : " + mWifiInfo.getBSSID()); 10183 10184 if (currentConnectedNetwork != null 10185 && (currentConnectedNetwork.networkId == candidate.networkId 10186 || currentConnectedNetwork.isLinked(candidate))) { 10187 if (DBG) { 10188 Log.d(TAG, "tryToConnectToNetwork: Roaming from " + currentAssociationId + " to " 10189 + targetAssociationId); 10190 } 10191 sendMessage(CMD_AUTO_ROAM, candidate.networkId, 0, scanResultCandidate); 10192 } else { 10193 if (DBG) { 10194 Log.d(TAG, "tryToConnectToNetwork: Reconnect from " + currentAssociationId + " to " 10195 + targetAssociationId); 10196 } 10197 10198 sendMessage(CMD_AUTO_CONNECT, candidate.networkId, 0, scanResultCandidate.BSSID); 10199 } 10200 } 10201} 10202