WifiStateMachine.java revision 5c175abc314bbb32c7d9fb542c97577f39a910f8
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.BaseDhcpStateMachine; 45import android.net.ConnectivityManager; 46import android.net.DhcpResults; 47import android.net.DhcpStateMachine; 48import android.net.InterfaceConfiguration; 49import android.net.LinkAddress; 50import android.net.LinkProperties; 51import android.net.Network; 52import android.net.NetworkAgent; 53import android.net.NetworkCapabilities; 54import android.net.NetworkFactory; 55import android.net.NetworkInfo; 56import android.net.NetworkInfo.DetailedState; 57import android.net.NetworkRequest; 58import android.net.NetworkUtils; 59import android.net.RouteInfo; 60import android.net.StaticIpConfiguration; 61import android.net.ip.IpManager; 62import android.net.wifi.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.osu.OSUInfo; 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.Collection; 124import java.util.HashSet; 125import java.util.LinkedList; 126import java.util.List; 127import java.util.Locale; 128import java.util.Queue; 129import java.util.Random; 130import java.util.Set; 131import java.util.concurrent.atomic.AtomicBoolean; 132import java.util.concurrent.atomic.AtomicInteger; 133import java.util.regex.Pattern; 134 135/** 136 * TODO: 137 * Deprecate WIFI_STATE_UNKNOWN 138 */ 139 140/** 141 * Track the state of Wifi connectivity. All event handling is done here, 142 * and all changes in connectivity state are initiated here. 143 * 144 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 145 * In the current implementation, we support concurrent wifi p2p and wifi operation. 146 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 147 * handles p2p operation. 148 * 149 * @hide 150 */ 151public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler, 152 WifiNative.WifiRssiEventHandler { 153 154 private static final String NETWORKTYPE = "WIFI"; 155 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 156 private static boolean DBG = false; 157 private static boolean VDBG = false; 158 private static boolean VVDBG = false; 159 private static boolean USE_PAUSE_SCANS = false; 160 private static boolean mLogMessages = false; 161 private static final String TAG = "WifiStateMachine"; 162 163 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 164 165 private static final String GOOGLE_OUI = "DA-A1-19"; 166 167 /* temporary debug flag - best network selection development */ 168 private static boolean PDBG = false; 169 170 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 171 * the corresponding BSSID. 172 */ 173 private boolean didBlackListBSSID = false; 174 175 /** 176 * Log with error attribute 177 * 178 * @param s is string log 179 */ 180 protected void loge(String s) { 181 Log.e(getName(), s); 182 } 183 protected void logd(String s) { 184 Log.d(getName(), s); 185 } 186 protected void log(String s) {; 187 Log.d(getName(), s); 188 } 189 190 private WifiMetrics mWifiMetrics; 191 private WifiMonitor mWifiMonitor; 192 private WifiNative mWifiNative; 193 private WifiConfigStore mWifiConfigStore; 194 private WifiQualifiedNetworkSelector mWifiQualifiedNetworkSelector; 195 private INetworkManagementService mNwService; 196 private ConnectivityManager mCm; 197 private BaseWifiLogger mWifiLogger; 198 private WifiApConfigStore mWifiApConfigStore; 199 private final boolean mP2pSupported; 200 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 201 private boolean mTemporarilyDisconnectWifi = false; 202 private final String mPrimaryDeviceType; 203 204 /* Scan results handling */ 205 private List<ScanDetail> mScanResults = new ArrayList<>(); 206 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 207 private static final int SCAN_RESULT_CACHE_SIZE = 160; 208 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 209 // For debug, number of known scan results that were found as part of last scan result event, 210 // as well the number of scans results returned by the supplicant with that message 211 private int mNumScanResultsKnown; 212 private int mNumScanResultsReturned; 213 214 private boolean mScreenOn = false; 215 216 /* Chipset supports background scan */ 217 private final boolean mBackgroundScanSupported; 218 219 private final String mInterfaceName; 220 /* Tethering interface could be separate from wlan interface */ 221 private String mTetherInterfaceName; 222 223 private int mLastSignalLevel = -1; 224 private String mLastBssid; 225 private int mLastNetworkId; // The network Id we successfully joined 226 private boolean linkDebouncing = false; 227 228 private boolean mHalBasedPnoDriverSupported = false; 229 230 // Below booleans are configurations coming from the Developper Settings 231 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 232 private boolean mHalBasedPnoEnableInDevSettings = false; 233 234 private int mHalFeatureSet = 0; 235 private static int mPnoResultFound = 0; 236 237 private int mCurrentUserId = UserHandle.USER_SYSTEM; 238 239 @Override 240 public void onPnoNetworkFound(ScanResult results[]) { 241 if (DBG) { 242 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 243 for (int i = 0; i < results.length; i++) { 244 Log.e(TAG, results[i].toString()); 245 } 246 } 247 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 248 } 249 250 public void processPnoNetworkFound(ScanResult results[]) { 251 ScanSettings settings = new ScanSettings(); 252 settings.channelSet = new ArrayList<WifiChannel>(); 253 StringBuilder sb = new StringBuilder(); 254 sb.append(""); 255 for (int i=0; i<results.length; i++) { 256 WifiChannel channel = new WifiChannel(); 257 channel.freqMHz = results[i].frequency; 258 settings.channelSet.add(channel); 259 sb.append(results[i].SSID).append(" "); 260 } 261 262 stopPnoOffload(); 263 264 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 265 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 266 mPnoResultFound ++; 267 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 268 int delay = 30 * 1000; 269 // reconfigure Pno after 1 minutes if we're still in disconnected state 270 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 271 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 272 (long)delay); 273 mRestartAutoJoinOffloadCounter++; 274 } 275 276 @Override 277 public void onRssiThresholdBreached(byte curRssi) { 278 if (DBG) { 279 Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi); 280 } 281 sendMessage(CMD_RSSI_THRESHOLD_BREACH, curRssi); 282 } 283 284 public void processRssiThreshold(byte curRssi, int reason) { 285 if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) { 286 Log.wtf(TAG, "processRssiThreshold: Invalid rssi " + curRssi); 287 return; 288 } 289 for (int i = 0; i < mRssiRanges.length; i++) { 290 if (curRssi < mRssiRanges[i]) { 291 // Assume sorted values(ascending order) for rssi, 292 // bounded by high(127) and low(-128) at extremeties 293 byte maxRssi = mRssiRanges[i]; 294 byte minRssi = mRssiRanges[i-1]; 295 // This value of hw has to be believed as this value is averaged and has breached 296 // the rssi thresholds and raised event to host. This would be eggregious if this 297 // value is invalid 298 mWifiInfo.setRssi((int) curRssi); 299 updateCapabilities(getCurrentWifiConfiguration()); 300 int ret = startRssiMonitoringOffload(maxRssi, minRssi); 301 Log.d(TAG, "Re-program RSSI thresholds for " + smToString(reason) + 302 ": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret); 303 break; 304 } 305 } 306 } 307 public void registerNetworkDisabled(int netId) { 308 // Restart legacy PNO and autojoin offload if needed 309 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 310 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 311 mRestartAutoJoinOffloadCounter++; 312 } 313 314 // Testing various network disconnect cases by sending lots of spurious 315 // disconnect to supplicant 316 private boolean testNetworkDisconnect = false; 317 318 private boolean mEnableRssiPolling = false; 319 private boolean mLegacyPnoEnabled = false; 320 private int mRssiPollToken = 0; 321 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 322 * In CONNECT_MODE, the STA can scan and connect to an access point 323 * In SCAN_ONLY_MODE, the STA can only scan for access points 324 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 325 */ 326 private int mOperationalMode = CONNECT_MODE; 327 private boolean mIsScanOngoing = false; 328 private boolean mIsFullScanOngoing = false; 329 private boolean mSendScanResultsBroadcast = false; 330 331 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 332 private WorkSource mScanWorkSource = null; 333 private static final int UNKNOWN_SCAN_SOURCE = -1; 334 private static final int SCAN_ALARM_SOURCE = -2; 335 private static final int ADD_OR_UPDATE_SOURCE = -3; 336 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 337 private static final int ENABLE_WIFI = -5; 338 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 339 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 340 341 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 342 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 343 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 344 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 345 346 /* Tracks if state machine has received any screen state change broadcast yet. 347 * We can miss one of these at boot. 348 */ 349 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 350 351 private boolean mBluetoothConnectionActive = false; 352 353 private PowerManager.WakeLock mSuspendWakeLock; 354 355 /** 356 * Interval in milliseconds between polling for RSSI 357 * and linkspeed information 358 */ 359 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 360 361 /** 362 * Interval in milliseconds between receiving a disconnect event 363 * while connected to a good AP, and handling the disconnect proper 364 */ 365 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 366 367 /** 368 * Delay between supplicant restarts upon failure to establish connection 369 */ 370 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 371 372 /** 373 * Number of times we attempt to restart supplicant 374 */ 375 private static final int SUPPLICANT_RESTART_TRIES = 5; 376 377 private int mSupplicantRestartCount = 0; 378 /* Tracks sequence number on stop failure message */ 379 private int mSupplicantStopFailureToken = 0; 380 381 /** 382 * Tether state change notification time out 383 */ 384 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 385 386 /* Tracks sequence number on a tether notification time out */ 387 private int mTetherToken = 0; 388 389 /** 390 * Driver start time out. 391 */ 392 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 393 394 /* Tracks sequence number on a driver time out */ 395 private int mDriverStartToken = 0; 396 397 /** 398 * Don't select new network when previous network selection is 399 * pending connection for this much time 400 */ 401 private static final int CONNECT_TIMEOUT_MSEC = 3000; 402 403 /** 404 * The link properties of the wifi interface. 405 * Do not modify this directly; use updateLinkProperties instead. 406 */ 407 private LinkProperties mLinkProperties; 408 409 /* Tracks sequence number on a periodic scan message */ 410 private int mPeriodicScanToken = 0; 411 412 // Wakelock held during wifi start/stop and driver load/unload 413 private PowerManager.WakeLock mWakeLock; 414 415 private Context mContext; 416 417 private final Object mDhcpResultsLock = new Object(); 418 private DhcpResults mDhcpResults; 419 420 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 421 private WifiInfo mWifiInfo; 422 private NetworkInfo mNetworkInfo; 423 private final NetworkCapabilities mDfltNetworkCapabilities; 424 private SupplicantStateTracker mSupplicantStateTracker; 425 private BaseDhcpStateMachine mDhcpStateMachine; 426 427 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 428 429 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 430 431 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 432 private boolean mAutoRoaming = false; 433 434 // Roaming failure count 435 private int mRoamFailCount = 0; 436 437 // This is the BSSID we are trying to associate to, it can be set to "any" 438 // if we havent selected a BSSID for joining. 439 // if we havent selected a BSSID for joining. 440 // The BSSID we are associated to is found in mWifiInfo 441 private String mTargetRoamBSSID = "any"; 442 //This one is used to track whta is the current target network ID. This is used for error 443 // handling during connection setup since many error message from supplicant does not report 444 // SSID Once connected, it will be set to invalid 445 private int mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 446 447 private long mLastDriverRoamAttempt = 0; 448 449 private WifiConfiguration targetWificonfiguration = null; 450 451 // Used as debug to indicate which configuration last was saved 452 private WifiConfiguration lastSavedConfigurationAttempt = null; 453 454 // Used as debug to indicate which configuration last was removed 455 private WifiConfiguration lastForgetConfigurationAttempt = null; 456 457 //Random used by softAP channel Selection 458 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 459 460 boolean isRoaming() { 461 return mAutoRoaming; 462 } 463 464 public void autoRoamSetBSSID(int netId, String bssid) { 465 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 466 } 467 468 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 469 boolean ret = true; 470 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 471 if (bssid == null) bssid = "any"; 472 if (config == null) return false; // Nothing to do 473 474 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 475 return false; // We didnt change anything 476 } 477 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 478 // Changing to ANY 479 if (!mWifiConfigStore.roamOnAny) { 480 ret = false; // Nothing to do 481 } 482 } 483 if (config.BSSID != null) { 484 bssid = config.BSSID; 485 if (DBG) { 486 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 487 } 488 } 489 490 if (VDBG) { 491 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 492 } 493 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 494 mTargetRoamBSSID = bssid; 495 mWifiConfigStore.saveWifiConfigBSSID(config); 496 return ret; 497 } 498 499 /** 500 * set Config's default BSSID (for association purpose) 501 * @param config config need set BSSID 502 * @param bssid default BSSID to assocaite with when connect to this network 503 * @return false -- does not change the current default BSSID of the configure 504 * true -- change the current default BSSID of the configur 505 */ 506 private boolean setTargetBssid(WifiConfiguration config, String bssid) { 507 if (config == null) { 508 return false; 509 } 510 511 if (config.BSSID != null) { 512 bssid = config.BSSID; 513 if (DBG) { 514 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 515 } 516 } 517 518 if (bssid == null) { 519 bssid = "any"; 520 } 521 522 String networkSelectionBSSID = config.getNetworkSelectionStatus() 523 .getNetworkSelectionBSSID(); 524 if (networkSelectionBSSID != null && networkSelectionBSSID.equals(bssid)) { 525 if (DBG) { 526 Log.d(TAG, "Current prefered BSSID is same as target"); 527 return false; 528 } 529 } 530 531 if (DBG) { 532 Log.d(TAG, "target set to " + config.SSID + ":" + bssid); 533 } 534 535 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 536 mTargetRoamBSSID = bssid; 537 mWifiConfigStore.saveWifiConfigBSSID(config); 538 return true; 539 } 540 /** 541 * Save the UID correctly depending on if this is a new or existing network. 542 * @return true if operation is authorized, false otherwise 543 */ 544 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 545 if (!mWifiConfigStore.isNetworkConfigured(config)) { 546 config.creatorUid = uid; 547 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 548 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 549 return false; 550 } 551 552 config.lastUpdateUid = uid; 553 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 554 555 return true; 556 557 } 558 559 /** 560 * Checks to see if user has specified if the apps configuration is connectable. 561 * If the user hasn't specified we query the user and return true. 562 * 563 * @param message The message to be deferred 564 * @param netId Network id of the configuration to check against 565 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 566 * CONFIG_OVERRIDE_PERMISSION 567 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 568 */ 569 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 570 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 571 572 // We can only evaluate saved configurations. 573 if (config == null) { 574 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 575 return true; 576 } 577 578 switch (config.userApproved) { 579 case WifiConfiguration.USER_APPROVED: 580 case WifiConfiguration.USER_BANNED: 581 return false; 582 case WifiConfiguration.USER_PENDING: 583 default: // USER_UNSPECIFIED 584 /* the intention was to ask user here; but a dialog box is * 585 * too invasive; so we are going to allow connection for now */ 586 config.userApproved = WifiConfiguration.USER_APPROVED; 587 return false; 588 } 589 } 590 591 private final IpManager mIpManager; 592 593 private AlarmManager mAlarmManager; 594 private PendingIntent mScanIntent; 595 private PendingIntent mDriverStopIntent; 596 private PendingIntent mPnoIntent; 597 598 private int mDisconnectedPnoAlarmCount = 0; 599 /* Tracks current frequency mode */ 600 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 601 602 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 603 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 604 605 // Channel for sending replies. 606 private AsyncChannel mReplyChannel = new AsyncChannel(); 607 608 private WifiP2pServiceImpl mWifiP2pServiceImpl; 609 610 // Used to initiate a connection with WifiP2pService 611 private AsyncChannel mWifiP2pChannel; 612 private AsyncChannel mWifiApConfigChannel; 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 /* Set the soft access point configuration */ 661 static final int CMD_SET_AP_CONFIG = BASE + 25; 662 /* Soft access point configuration set completed */ 663 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 664 /* Request the soft access point configuration */ 665 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 666 /* Response to access point configuration request */ 667 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 668 /* Invoked when getting a tether state change notification */ 669 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 670 /* A delayed message sent to indicate tether state change failed to arrive */ 671 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 672 673 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 674 675 /* Supplicant commands */ 676 /* Is supplicant alive ? */ 677 static final int CMD_PING_SUPPLICANT = BASE + 51; 678 /* Add/update a network configuration */ 679 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 680 /* Delete a network */ 681 static final int CMD_REMOVE_NETWORK = BASE + 53; 682 /* Enable a network. The device will attempt a connection to the given network. */ 683 static final int CMD_ENABLE_NETWORK = BASE + 54; 684 /* Enable all networks */ 685 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 686 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 687 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 688 /* Clear the blacklist network list */ 689 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 690 /* Save configuration */ 691 static final int CMD_SAVE_CONFIG = BASE + 58; 692 /* Get configured networks */ 693 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 694 /* Get available frequencies */ 695 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 696 /* Get adaptors */ 697 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 698 /* Get configured networks with real preSharedKey */ 699 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 700 /* Get Link Layer Stats thru HAL */ 701 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 702 /* Supplicant commands after driver start*/ 703 /* Initiate a scan */ 704 static final int CMD_START_SCAN = BASE + 71; 705 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 706 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 707 /* Disconnect from a network */ 708 static final int CMD_DISCONNECT = BASE + 73; 709 /* Reconnect to a network */ 710 static final int CMD_RECONNECT = BASE + 74; 711 /* Reassociate to a network */ 712 static final int CMD_REASSOCIATE = BASE + 75; 713 /* Get Connection Statistis */ 714 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 715 716 /* Controls suspend mode optimizations 717 * 718 * When high perf mode is enabled, suspend mode optimizations are disabled 719 * 720 * When high perf mode is disabled, suspend mode optimizations are enabled 721 * 722 * Suspend mode optimizations include: 723 * - packet filtering 724 * - turn off roaming 725 * - DTIM wake up settings 726 */ 727 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 728 /* Set the country code */ 729 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 730 /* Enables RSSI poll */ 731 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 732 /* RSSI poll */ 733 static final int CMD_RSSI_POLL = BASE + 83; 734 /* Set up packet filtering */ 735 static final int CMD_START_PACKET_FILTERING = BASE + 84; 736 /* Clear packet filter */ 737 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 738 /* Enable suspend mode optimizations in the driver */ 739 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 740 /* Delayed NETWORK_DISCONNECT */ 741 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 742 /* When there are no saved networks, we do a periodic scan to notify user of 743 * an open network */ 744 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 745 /* Test network Disconnection NETWORK_DISCONNECT */ 746 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 747 748 private int testNetworkDisconnectCounter = 0; 749 750 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 751 static final int MULTICAST_V6 = 1; 752 static final int MULTICAST_V4 = 0; 753 754 /* Set the frequency band */ 755 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 756 /* Enable TDLS on a specific MAC address */ 757 static final int CMD_ENABLE_TDLS = BASE + 92; 758 /* DHCP/IP configuration watchdog */ 759 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 760 761 /** 762 * Watchdog for protecting against b/16823537 763 * Leave time for 4-way handshake to succeed 764 */ 765 static final int ROAM_GUARD_TIMER_MSEC = 15000; 766 767 int roamWatchdogCount = 0; 768 /* Roam state watchdog */ 769 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 770 /* Screen change intent handling */ 771 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 772 773 /* Disconnecting state watchdog */ 774 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 775 776 /* Remove a packages associated configrations */ 777 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 778 779 /* Disable an ephemeral network */ 780 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 781 782 /* Get matching network */ 783 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 784 785 /* alert from firmware */ 786 static final int CMD_FIRMWARE_ALERT = BASE + 100; 787 788 /* SIM is removed; reset any cached data for it */ 789 static final int CMD_RESET_SIM_NETWORKS = BASE + 101; 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( 1186 mWifiConfigStore, mContext, this, 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_DEAUTH_EVENT, getHandler()); 1385 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.HS20_REMEDIATION_EVENT, 1386 getHandler()); 1387 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_CONNECTION_EVENT, 1388 getHandler()); 1389 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_DISCONNECTION_EVENT, 1390 getHandler()); 1391 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.RX_HS20_ANQP_ICON_EVENT, 1392 getHandler()); 1393 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_FAILED_EVENT, getHandler()); 1394 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_RESULTS_EVENT, getHandler()); 1395 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_REENABLED, getHandler()); 1396 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_TEMP_DISABLED, getHandler()); 1397 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_CONNECTION_EVENT, getHandler()); 1398 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_DISCONNECTION_EVENT, 1399 getHandler()); 1400 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT, 1401 getHandler()); 1402 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_IDENTITY, getHandler()); 1403 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_SIM_AUTH, getHandler()); 1404 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_FAIL_EVENT, getHandler()); 1405 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_OVERLAP_EVENT, getHandler()); 1406 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_SUCCESS_EVENT, getHandler()); 1407 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_TIMEOUT_EVENT, getHandler()); 1408 1409 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1410 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1411 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1412 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1413 } 1414 1415 class IpManagerCallback extends IpManager.Callback { 1416 @Override 1417 public boolean usingIpReachabilityMonitor() { 1418 return true; 1419 } 1420 1421 @Override 1422 public void onIPv4ProvisioningSuccess(DhcpResults dhcpResults, int reason) { 1423 sendMessage(CMD_IPV4_PROVISIONING_SUCCESS, reason, 0, dhcpResults); 1424 } 1425 1426 @Override 1427 public void onIPv4ProvisioningFailure(int reason) { 1428 sendMessage(CMD_IPV4_PROVISIONING_FAILURE, reason); 1429 } 1430 1431 @Override 1432 public void onProvisioningSuccess(LinkProperties newLp) { 1433 // For now, updateLinkProperties() does the needful. 1434 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1435 } 1436 1437 @Override 1438 public void onProvisioningFailure(LinkProperties newLp) { 1439 // For now, updateLinkProperties() does the needful. 1440 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1441 } 1442 1443 @Override 1444 public void onLinkPropertiesChange(LinkProperties newLp) { 1445 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1446 } 1447 1448 @Override 1449 public void onReachabilityLost(String logMsg) { 1450 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 1451 } 1452 } 1453 1454 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1455 Intent intent = new Intent(action, null); 1456 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1457 intent.setPackage("android"); 1458 return mFacade.getBroadcast(mContext, requestCode, intent, 0); 1459 } 1460 1461 private int mVerboseLoggingLevel = 0; 1462 1463 int getVerboseLoggingLevel() { 1464 return mVerboseLoggingLevel; 1465 } 1466 1467 void enableVerboseLogging(int verbose) { 1468 mVerboseLoggingLevel = verbose; 1469 if (verbose > 0) { 1470 DBG = true; 1471 VDBG = true; 1472 PDBG = true; 1473 mLogMessages = true; 1474 mWifiNative.setSupplicantLogLevel("DEBUG"); 1475 } else { 1476 DBG = false; 1477 VDBG = false; 1478 PDBG = false; 1479 mLogMessages = false; 1480 mWifiNative.setSupplicantLogLevel("INFO"); 1481 } 1482 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1483 mWifiMonitor.enableVerboseLogging(verbose); 1484 mWifiNative.enableVerboseLogging(verbose); 1485 mWifiConfigStore.enableVerboseLogging(verbose); 1486 mSupplicantStateTracker.enableVerboseLogging(verbose); 1487 mWifiQualifiedNetworkSelector.enableVerboseLogging(verbose); 1488 } 1489 1490 public void setHalBasedAutojoinOffload(int enabled) { 1491 // Shoult be used for debug only, triggered form developper settings 1492 // enabling HAl based PNO dynamically is not safe and not a normal operation 1493 mHalBasedPnoEnableInDevSettings = enabled > 0; 1494 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1495 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1496 sendMessage(CMD_DISCONNECT); 1497 } 1498 1499 int getHalBasedAutojoinOffload() { 1500 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1501 } 1502 1503 boolean useHalBasedAutoJoinOffload() { 1504 // all three settings need to be true: 1505 // - developper settings switch 1506 // - driver support 1507 // - config option 1508 return mHalBasedPnoEnableInDevSettings 1509 && mHalBasedPnoDriverSupported 1510 && mWifiConfigStore.enableHalBasedPno.get(); 1511 } 1512 1513 boolean allowFullBandScanAndAssociated() { 1514 1515 if (!getEnableAutoJoinWhenAssociated()) { 1516 if (DBG) { 1517 Log.e(TAG, "allowFullBandScanAndAssociated: " 1518 + " enableAutoJoinWhenAssociated : disallow"); 1519 } 1520 return false; 1521 } 1522 1523 if (mWifiInfo.txSuccessRate > 1524 mWifiConfigStore.maxTxPacketForFullScans 1525 || mWifiInfo.rxSuccessRate > 1526 mWifiConfigStore.maxRxPacketForFullScans) { 1527 if (DBG) { 1528 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1529 + mWifiInfo.txSuccessRate + " rx " 1530 + mWifiInfo.rxSuccessRate 1531 + " allow scan with traffic " + getAllowScansWithTraffic()); 1532 } 1533 // Too much traffic at the interface, hence no full band scan 1534 if (getAllowScansWithTraffic() == 0) { 1535 return false; 1536 } 1537 } 1538 1539 if (getCurrentState() != mConnectedState) { 1540 if (DBG) { 1541 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1542 } 1543 return false; 1544 } 1545 1546 return true; 1547 } 1548 1549 long mLastScanPermissionUpdate = 0; 1550 boolean mConnectedModeGScanOffloadStarted = false; 1551 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1552 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1553 // we want to throttle the GScan Stop->Start transition 1554 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1555 void updateAssociatedScanPermission() { 1556 1557 if (useHalBasedAutoJoinOffload()) { 1558 boolean allowed = allowFullBandScanAndAssociated(); 1559 1560 long now = System.currentTimeMillis(); 1561 if (mConnectedModeGScanOffloadStarted && !allowed) { 1562 if (DBG) { 1563 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1564 } 1565 stopPnoOffload(); 1566 stopGScan(" useHalBasedAutoJoinOffload"); 1567 } 1568 if (!mConnectedModeGScanOffloadStarted && allowed) { 1569 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1570 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1571 // to look for 5GHz BSSIDs and better networks 1572 if (DBG) { 1573 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1574 } 1575 startGScanConnectedModeOffload("updatePermission " 1576 + (now - mLastScanPermissionUpdate) + "ms"); 1577 mLastScanPermissionUpdate = now; 1578 } 1579 } 1580 } 1581 } 1582 1583 private int mAggressiveHandover = 0; 1584 1585 int getAggressiveHandover() { 1586 return mAggressiveHandover; 1587 } 1588 1589 void enableAggressiveHandover(int enabled) { 1590 mAggressiveHandover = enabled; 1591 } 1592 1593 public void clearANQPCache() { 1594 mWifiConfigStore.trimANQPCache(true); 1595 } 1596 1597 public void setAllowScansWithTraffic(int enabled) { 1598 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1599 } 1600 1601 public int getAllowScansWithTraffic() { 1602 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1603 } 1604 1605 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1606 boolean old_state = getEnableAutoJoinWhenAssociated(); 1607 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1608 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1609 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1610 null); 1611 } 1612 return true; 1613 } 1614 1615 public boolean getEnableAutoJoinWhenAssociated() { 1616 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1617 } 1618 /* 1619 * 1620 * Framework scan control 1621 */ 1622 1623 private boolean mAlarmEnabled = false; 1624 1625 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1626 1627 private void setScanAlarm(boolean enabled) { 1628 if (PDBG) { 1629 String state; 1630 if (enabled) state = "enabled"; else state = "disabled"; 1631 logd("setScanAlarm " + state 1632 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1633 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1634 } 1635 if (mBackgroundScanSupported == false) { 1636 // Scan alarm is only used for background scans if they are not 1637 // offloaded to the wifi chipset, hence enable the scan alarm 1638 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1639 enabled = true; 1640 } 1641 1642 if (enabled == mAlarmEnabled) return; 1643 if (enabled) { 1644 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1645 /* going to wake up the host processor to look for access points */ 1646 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1647 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1648 mScanIntent); 1649 mAlarmEnabled = true; 1650 } else { 1651 mAlarmManager.cancel(mScanIntent); 1652 mAlarmEnabled = false; 1653 } 1654 } 1655 1656 private void cancelDelayedScan() { 1657 mDelayedScanCounter.incrementAndGet(); 1658 } 1659 1660 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1661 ScanSettings settings, WorkSource workSource) { 1662 1663 if (counter != mDelayedScanCounter.get()) { 1664 return false; 1665 } 1666 if (restart) 1667 startDelayedScan(milli, settings, workSource); 1668 return true; 1669 } 1670 1671 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1672 if (milli <= 0) return; 1673 /** 1674 * The cases where the scan alarm should be run are : 1675 * - DisconnectedState && screenOn => used delayed timer 1676 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1677 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1678 * - ConnectedState && screenOn => used delayed timer 1679 */ 1680 1681 mDelayedScanCounter.incrementAndGet(); 1682 if (mScreenOn && 1683 (getCurrentState() == mDisconnectedState 1684 || getCurrentState() == mConnectedState)) { 1685 Bundle bundle = new Bundle(); 1686 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1687 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1688 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1689 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1690 mDelayedScanCounter.get(), bundle, milli); 1691 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1692 } else if (mBackgroundScanSupported == false 1693 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1694 setScanAlarm(true); 1695 if (DBG) logd("startDelayedScan start scan alarm -> " 1696 + mDelayedScanCounter + " milli " + milli); 1697 } else { 1698 if (DBG) logd("startDelayedScan unhandled -> " 1699 + mDelayedScanCounter + " milli " + milli); 1700 } 1701 } 1702 1703 private boolean setRandomMacOui() { 1704 String oui = mContext.getResources().getString(R.string.config_wifi_random_mac_oui); 1705 if (TextUtils.isEmpty(oui)) { 1706 oui = GOOGLE_OUI; 1707 } 1708 String[] ouiParts = oui.split("-"); 1709 byte[] ouiBytes = new byte[3]; 1710 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1711 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1712 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1713 1714 logd("Setting OUI to " + oui); 1715 return mWifiNative.setScanningMacOui(ouiBytes); 1716 } 1717 1718 /** 1719 * ****************************************************** 1720 * Methods exposed for public use 1721 * ****************************************************** 1722 */ 1723 1724 public Messenger getMessenger() { 1725 return new Messenger(getHandler()); 1726 } 1727 1728 /** 1729 * TODO: doc 1730 */ 1731 public boolean syncPingSupplicant(AsyncChannel channel) { 1732 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1733 boolean result = (resultMsg.arg1 != FAILURE); 1734 resultMsg.recycle(); 1735 return result; 1736 } 1737 1738 /** 1739 * When settings allowing making use of untrusted networks change, trigger a scan 1740 * so as to kick of autojoin. 1741 */ 1742 public void startScanForUntrustedSettingChange() { 1743 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1744 } 1745 1746 /** 1747 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1748 * given to callingUid. 1749 * 1750 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1751 * workSource is specified. 1752 * @param workSource If not null, blame is given to workSource. 1753 * @param settings Scan settings, see {@link ScanSettings}. 1754 */ 1755 public void startScan(int callingUid, int scanCounter, 1756 ScanSettings settings, WorkSource workSource) { 1757 Bundle bundle = new Bundle(); 1758 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1759 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1760 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1761 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1762 } 1763 1764 // called from BroadcastListener 1765 1766 /** 1767 * Start reading new scan data 1768 * Data comes in as: 1769 * "scancount=5\n" 1770 * "nextcount=5\n" 1771 * "apcount=3\n" 1772 * "trunc\n" (optional) 1773 * "bssid=...\n" 1774 * "ssid=...\n" 1775 * "freq=...\n" (in Mhz) 1776 * "level=...\n" 1777 * "dist=...\n" (in cm) 1778 * "distsd=...\n" (standard deviation, in cm) 1779 * "====" 1780 * "bssid=...\n" 1781 * etc 1782 * "====" 1783 * "bssid=...\n" 1784 * etc 1785 * "%%%%" 1786 * "apcount=2\n" 1787 * "bssid=...\n" 1788 * etc 1789 * "%%%% 1790 * etc 1791 * "----" 1792 */ 1793 private final static boolean DEBUG_PARSE = false; 1794 1795 private long mDisconnectedTimeStamp = 0; 1796 1797 public long getDisconnectedTimeMilli() { 1798 if (getCurrentState() == mDisconnectedState 1799 && mDisconnectedTimeStamp != 0) { 1800 long now_ms = System.currentTimeMillis(); 1801 return now_ms - mDisconnectedTimeStamp; 1802 } 1803 return 0; 1804 } 1805 1806 // Keeping track of scan requests 1807 private long lastStartScanTimeStamp = 0; 1808 private long lastScanDuration = 0; 1809 // Last connect attempt is used to prevent scan requests: 1810 // - for a period of 10 seconds after attempting to connect 1811 private long lastConnectAttemptTimestamp = 0; 1812 private Set<Integer> lastScanFreqs = null; 1813 1814 // For debugging, keep track of last message status handling 1815 // TODO, find an equivalent mechanism as part of parent class 1816 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1817 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1818 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1819 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1820 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1821 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1822 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1823 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1824 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1825 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1826 1827 private int messageHandlingStatus = 0; 1828 1829 //TODO: this is used only to track connection attempts, however the link state and packet per 1830 //TODO: second logic should be folded into that 1831 private boolean checkOrDeferScanAllowed(Message msg) { 1832 long now = System.currentTimeMillis(); 1833 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1834 Message dmsg = Message.obtain(msg); 1835 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1836 return false; 1837 } 1838 return true; 1839 } 1840 1841 private int mOnTime = 0; 1842 private int mTxTime = 0; 1843 private int mRxTime = 0; 1844 private int mOnTimeStartScan = 0; 1845 private int mTxTimeStartScan = 0; 1846 private int mRxTimeStartScan = 0; 1847 private int mOnTimeScan = 0; 1848 private int mTxTimeScan = 0; 1849 private int mRxTimeScan = 0; 1850 private int mOnTimeThisScan = 0; 1851 private int mTxTimeThisScan = 0; 1852 private int mRxTimeThisScan = 0; 1853 1854 private int mOnTimeScreenStateChange = 0; 1855 private int mOnTimeAtLastReport = 0; 1856 private long lastOntimeReportTimeStamp = 0; 1857 private long lastScreenStateChangeTimeStamp = 0; 1858 private int mOnTimeLastReport = 0; 1859 private int mTxTimeLastReport = 0; 1860 private int mRxTimeLastReport = 0; 1861 1862 private long lastLinkLayerStatsUpdate = 0; 1863 1864 String reportOnTime() { 1865 long now = System.currentTimeMillis(); 1866 StringBuilder sb = new StringBuilder(); 1867 // Report stats since last report 1868 int on = mOnTime - mOnTimeLastReport; 1869 mOnTimeLastReport = mOnTime; 1870 int tx = mTxTime - mTxTimeLastReport; 1871 mTxTimeLastReport = mTxTime; 1872 int rx = mRxTime - mRxTimeLastReport; 1873 mRxTimeLastReport = mRxTime; 1874 int period = (int) (now - lastOntimeReportTimeStamp); 1875 lastOntimeReportTimeStamp = now; 1876 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1877 // Report stats since Screen State Changed 1878 on = mOnTime - mOnTimeScreenStateChange; 1879 period = (int) (now - lastScreenStateChangeTimeStamp); 1880 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1881 return sb.toString(); 1882 } 1883 1884 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1885 WifiLinkLayerStats stats = null; 1886 if (mWifiLinkLayerStatsSupported > 0) { 1887 String name = "wlan0"; 1888 stats = mWifiNative.getWifiLinkLayerStats(name); 1889 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1890 mWifiLinkLayerStatsSupported -= 1; 1891 } else if (stats != null) { 1892 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1893 mOnTime = stats.on_time; 1894 mTxTime = stats.tx_time; 1895 mRxTime = stats.rx_time; 1896 mRunningBeaconCount = stats.beacon_rx; 1897 } 1898 } 1899 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1900 long mTxPkts = mFacade.getTxPackets(mInterfaceName); 1901 long mRxPkts = mFacade.getRxPackets(mInterfaceName); 1902 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1903 } else { 1904 mWifiInfo.updatePacketRates(stats); 1905 } 1906 if (useHalBasedAutoJoinOffload()) { 1907 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1908 } 1909 return stats; 1910 } 1911 1912 void startRadioScanStats() { 1913 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1914 if (stats != null) { 1915 mOnTimeStartScan = stats.on_time; 1916 mTxTimeStartScan = stats.tx_time; 1917 mRxTimeStartScan = stats.rx_time; 1918 mOnTime = stats.on_time; 1919 mTxTime = stats.tx_time; 1920 mRxTime = stats.rx_time; 1921 } 1922 } 1923 1924 void closeRadioScanStats() { 1925 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1926 if (stats != null) { 1927 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1928 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1929 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1930 mOnTimeScan += mOnTimeThisScan; 1931 mTxTimeScan += mTxTimeThisScan; 1932 mRxTimeScan += mRxTimeThisScan; 1933 } 1934 } 1935 1936 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1937 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1938 if (ret != 0) { 1939 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1940 "): hardware error " + ret); 1941 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1942 } else { 1943 return ConnectivityManager.PacketKeepalive.SUCCESS; 1944 } 1945 } 1946 1947 int stopWifiIPPacketOffload(int slot) { 1948 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1949 if (ret != 0) { 1950 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1951 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1952 } else { 1953 return ConnectivityManager.PacketKeepalive.SUCCESS; 1954 } 1955 } 1956 1957 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1958 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1959 } 1960 1961 int stopRssiMonitoringOffload() { 1962 return mWifiNative.stopRssiMonitoring(); 1963 } 1964 1965 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1966 private void noteScanStart(int callingUid, WorkSource workSource) { 1967 if (lastStartScanTimeStamp != 0) { 1968 noteScanEnd(); 1969 } 1970 long now = System.currentTimeMillis(); 1971 lastStartScanTimeStamp = now; 1972 lastScanDuration = 0; 1973 if (DBG) { 1974 String ts = String.format("[%,d ms]", now); 1975 if (workSource != null) { 1976 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1977 + " uid " + Integer.toString(callingUid)); 1978 } else { 1979 if (DBG) logd(ts + " noteScanstart no scan source" 1980 + " uid " + Integer.toString(callingUid)); 1981 } 1982 } 1983 startRadioScanStats(); 1984 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1985 && callingUid != SCAN_ALARM_SOURCE) 1986 || workSource != null)) { 1987 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1988 1989 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1990 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1991 mScanWorkSource = new WorkSource(Process.WIFI_UID); 1992 } 1993 1994 try { 1995 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1996 } catch (RemoteException e) { 1997 log(e.toString()); 1998 } 1999 } 2000 } 2001 2002 private void noteScanEnd() { 2003 closeRadioScanStats(); 2004 long now = System.currentTimeMillis(); 2005 if (lastStartScanTimeStamp != 0) { 2006 lastScanDuration = now - lastStartScanTimeStamp; 2007 } 2008 lastStartScanTimeStamp = 0; 2009 if (DBG) { 2010 String ts = String.format("[%,d ms]", now); 2011 if (mScanWorkSource != null) 2012 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 2013 + " onTime=" + mOnTimeThisScan); 2014 else 2015 logd(ts + " noteScanEnd no scan source" 2016 + " onTime=" + mOnTimeThisScan); 2017 } 2018 if (mScanWorkSource != null) { 2019 try { 2020 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 2021 } catch (RemoteException e) { 2022 log(e.toString()); 2023 } finally { 2024 mScanWorkSource = null; 2025 } 2026 } 2027 } 2028 2029 private void handleScanRequest(int type, Message message) { 2030 ScanSettings settings = null; 2031 WorkSource workSource = null; 2032 2033 // unbundle parameters 2034 Bundle bundle = (Bundle) message.obj; 2035 2036 if (bundle != null) { 2037 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 2038 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 2039 } 2040 2041 Set<Integer> freqs = null; 2042 if (settings != null && settings.channelSet != null) { 2043 freqs = new HashSet<Integer>(); 2044 for (WifiChannel channel : settings.channelSet) { 2045 freqs.add(channel.freqMHz); 2046 } 2047 } 2048 2049 // call wifi native to start the scan 2050 if (startScanNative(type, freqs)) { 2051 // only count battery consumption if scan request is accepted 2052 noteScanStart(message.arg1, workSource); 2053 // a full scan covers everything, clearing scan request buffer 2054 if (freqs == null) 2055 mBufferedScanMsg.clear(); 2056 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 2057 if (workSource != null) { 2058 // External worksource was passed along the scan request, 2059 // hence always send a broadcast 2060 mSendScanResultsBroadcast = true; 2061 } 2062 return; 2063 } 2064 2065 // if reach here, scan request is rejected 2066 2067 if (!mIsScanOngoing) { 2068 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2069 2070 // discard this request and pop up the next one 2071 if (mBufferedScanMsg.size() > 0) { 2072 sendMessage(mBufferedScanMsg.remove()); 2073 } 2074 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2075 } else if (!mIsFullScanOngoing) { 2076 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2077 // buffer the scan request to make sure specified channels will be scanned eventually 2078 if (freqs == null) 2079 mBufferedScanMsg.clear(); 2080 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2081 Message msg = obtainMessage(CMD_START_SCAN, 2082 message.arg1, message.arg2, bundle); 2083 mBufferedScanMsg.add(msg); 2084 } else { 2085 // if too many requests in buffer, combine them into a single full scan 2086 bundle = new Bundle(); 2087 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2088 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2089 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2090 mBufferedScanMsg.clear(); 2091 mBufferedScanMsg.add(msg); 2092 } 2093 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2094 } else { 2095 // mIsScanOngoing and mIsFullScanOngoing 2096 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2097 } 2098 } 2099 2100 2101 /** 2102 * return true iff scan request is accepted 2103 */ 2104 private boolean startScanNative(int type, Set<Integer> freqs) { 2105 if (mWifiNative.scan(type, freqs)) { 2106 mIsScanOngoing = true; 2107 mIsFullScanOngoing = (freqs == null); 2108 lastScanFreqs = freqs; 2109 return true; 2110 } 2111 return false; 2112 } 2113 2114 /** 2115 * TODO: doc 2116 */ 2117 public void setSupplicantRunning(boolean enable) { 2118 if (enable) { 2119 sendMessage(CMD_START_SUPPLICANT); 2120 } else { 2121 sendMessage(CMD_STOP_SUPPLICANT); 2122 } 2123 } 2124 2125 /** 2126 * TODO: doc 2127 */ 2128 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2129 if (enable) { 2130 sendMessage(CMD_START_AP, wifiConfig); 2131 } else { 2132 sendMessage(CMD_STOP_AP); 2133 } 2134 } 2135 2136 public void setWifiApConfiguration(WifiConfiguration config) { 2137 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2138 } 2139 2140 public WifiConfiguration syncGetWifiApConfiguration() { 2141 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2142 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2143 resultMsg.recycle(); 2144 return ret; 2145 } 2146 2147 /** 2148 * TODO: doc 2149 */ 2150 public int syncGetWifiState() { 2151 return mWifiState.get(); 2152 } 2153 2154 /** 2155 * TODO: doc 2156 */ 2157 public String syncGetWifiStateByName() { 2158 switch (mWifiState.get()) { 2159 case WIFI_STATE_DISABLING: 2160 return "disabling"; 2161 case WIFI_STATE_DISABLED: 2162 return "disabled"; 2163 case WIFI_STATE_ENABLING: 2164 return "enabling"; 2165 case WIFI_STATE_ENABLED: 2166 return "enabled"; 2167 case WIFI_STATE_UNKNOWN: 2168 return "unknown state"; 2169 default: 2170 return "[invalid state]"; 2171 } 2172 } 2173 2174 /** 2175 * TODO: doc 2176 */ 2177 public int syncGetWifiApState() { 2178 return mWifiApState.get(); 2179 } 2180 2181 /** 2182 * TODO: doc 2183 */ 2184 public String syncGetWifiApStateByName() { 2185 switch (mWifiApState.get()) { 2186 case WIFI_AP_STATE_DISABLING: 2187 return "disabling"; 2188 case WIFI_AP_STATE_DISABLED: 2189 return "disabled"; 2190 case WIFI_AP_STATE_ENABLING: 2191 return "enabling"; 2192 case WIFI_AP_STATE_ENABLED: 2193 return "enabled"; 2194 case WIFI_AP_STATE_FAILED: 2195 return "failed"; 2196 default: 2197 return "[invalid state]"; 2198 } 2199 } 2200 2201 public boolean isConnected() { 2202 return getCurrentState() == mConnectedState; 2203 } 2204 2205 public boolean isDisconnected() { 2206 return getCurrentState() == mDisconnectedState; 2207 } 2208 2209 public boolean isSupplicantTransientState() { 2210 SupplicantState SupplicantState = mWifiInfo.getSupplicantState(); 2211 if (SupplicantState == SupplicantState.ASSOCIATING 2212 || SupplicantState == SupplicantState.AUTHENTICATING 2213 || SupplicantState == SupplicantState.FOUR_WAY_HANDSHAKE 2214 || SupplicantState == SupplicantState.GROUP_HANDSHAKE) { 2215 2216 if (DBG) { 2217 Log.d(TAG, "Supplicant is under transient state: " + SupplicantState); 2218 } 2219 return true; 2220 } else { 2221 if (DBG) { 2222 Log.d(TAG, "Supplicant is under steady state: " + SupplicantState); 2223 } 2224 } 2225 2226 return false; 2227 } 2228 2229 public boolean isLinkDebouncing() { 2230 return linkDebouncing; 2231 } 2232 2233 /** 2234 * Get status information for the current connection, if any. 2235 * 2236 * @return a {@link WifiInfo} object containing information about the current connection 2237 */ 2238 public WifiInfo syncRequestConnectionInfo() { 2239 return getWiFiInfoForUid(Binder.getCallingUid()); 2240 } 2241 2242 public WifiInfo getWifiInfo() { 2243 return mWifiInfo; 2244 } 2245 2246 public DhcpResults syncGetDhcpResults() { 2247 synchronized (mDhcpResultsLock) { 2248 return new DhcpResults(mDhcpResults); 2249 } 2250 } 2251 2252 /** 2253 * TODO: doc 2254 */ 2255 public void setDriverStart(boolean enable) { 2256 if (enable) { 2257 sendMessage(CMD_START_DRIVER); 2258 } else { 2259 sendMessage(CMD_STOP_DRIVER); 2260 } 2261 } 2262 2263 /** 2264 * TODO: doc 2265 */ 2266 public void setOperationalMode(int mode) { 2267 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2268 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2269 } 2270 2271 /** 2272 * TODO: doc 2273 */ 2274 public List<ScanResult> syncGetScanResultsList() { 2275 synchronized (mScanResultCache) { 2276 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2277 for (ScanDetail result : mScanResults) { 2278 scanList.add(new ScanResult(result.getScanResult())); 2279 } 2280 return scanList; 2281 } 2282 } 2283 2284 public Collection<OSUInfo> getOSUInfos() { 2285 return mWifiConfigStore.getOSUInfos(); 2286 } 2287 2288 public void setOSUSelection(int osuID) { 2289 mWifiConfigStore.setOSUSelection(osuID); 2290 } 2291 2292 public void disableEphemeralNetwork(String SSID) { 2293 if (SSID != null) { 2294 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2295 } 2296 } 2297 2298 /** 2299 * Get unsynchronized pointer to scan result list 2300 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2301 */ 2302 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2303 return mScanResults; 2304 } 2305 2306 /** 2307 * Disconnect from Access Point 2308 */ 2309 public void disconnectCommand() { 2310 sendMessage(CMD_DISCONNECT); 2311 } 2312 2313 public void disconnectCommand(int uid, int reason) { 2314 sendMessage(CMD_DISCONNECT, uid, reason); 2315 } 2316 2317 /** 2318 * Initiate a reconnection to AP 2319 */ 2320 public void reconnectCommand() { 2321 sendMessage(CMD_RECONNECT); 2322 } 2323 2324 /** 2325 * Initiate a re-association to AP 2326 */ 2327 public void reassociateCommand() { 2328 sendMessage(CMD_REASSOCIATE); 2329 } 2330 2331 /** 2332 * Reload networks and then reconnect; helps load correct data for TLS networks 2333 */ 2334 2335 public void reloadTlsNetworksAndReconnect() { 2336 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2337 } 2338 2339 /** 2340 * Add a network synchronously 2341 * 2342 * @return network id of the new network 2343 */ 2344 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2345 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2346 int result = resultMsg.arg1; 2347 resultMsg.recycle(); 2348 return result; 2349 } 2350 2351 /** 2352 * Get configured networks synchronously 2353 * 2354 * @param channel 2355 * @return 2356 */ 2357 2358 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2359 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2360 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2361 resultMsg.recycle(); 2362 return result; 2363 } 2364 2365 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2366 Message resultMsg = channel.sendMessageSynchronously( 2367 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2368 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2369 resultMsg.recycle(); 2370 return result; 2371 } 2372 2373 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2374 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2375 return (WifiConfiguration) resultMsg.obj; 2376 } 2377 2378 /** 2379 * Get connection statistics synchronously 2380 * 2381 * @param channel 2382 * @return 2383 */ 2384 2385 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2386 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2387 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2388 resultMsg.recycle(); 2389 return result; 2390 } 2391 2392 /** 2393 * Get adaptors synchronously 2394 */ 2395 2396 public int syncGetSupportedFeatures(AsyncChannel channel) { 2397 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2398 int supportedFeatureSet = resultMsg.arg1; 2399 resultMsg.recycle(); 2400 return supportedFeatureSet; 2401 } 2402 2403 /** 2404 * Get link layers stats for adapter synchronously 2405 */ 2406 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2407 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2408 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2409 resultMsg.recycle(); 2410 return result; 2411 } 2412 2413 /** 2414 * Delete a network 2415 * 2416 * @param networkId id of the network to be removed 2417 */ 2418 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2419 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2420 boolean result = (resultMsg.arg1 != FAILURE); 2421 resultMsg.recycle(); 2422 return result; 2423 } 2424 2425 /** 2426 * Enable a network 2427 * 2428 * @param netId network id of the network 2429 * @param disableOthers true, if all other networks have to be disabled 2430 * @return {@code true} if the operation succeeds, {@code false} otherwise 2431 */ 2432 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2433 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2434 disableOthers ? 1 : 0); 2435 boolean result = (resultMsg.arg1 != FAILURE); 2436 resultMsg.recycle(); 2437 return result; 2438 } 2439 2440 /** 2441 * Disable a network 2442 * 2443 * @param netId network id of the network 2444 * @return {@code true} if the operation succeeds, {@code false} otherwise 2445 */ 2446 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2447 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2448 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2449 resultMsg.recycle(); 2450 return result; 2451 } 2452 2453 /** 2454 * Retrieves a WPS-NFC configuration token for the specified network 2455 * 2456 * @return a hex string representation of the WPS-NFC configuration token 2457 */ 2458 public String syncGetWpsNfcConfigurationToken(int netId) { 2459 return mWifiNative.getNfcWpsConfigurationToken(netId); 2460 } 2461 2462 void enableBackgroundScan(boolean enable) { 2463 if (enable) { 2464 mWifiConfigStore.enableAllNetworks(); 2465 } 2466 boolean ret = mWifiNative.enableBackgroundScan(enable); 2467 if (ret) { 2468 mLegacyPnoEnabled = enable; 2469 } else { 2470 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2471 } 2472 } 2473 2474 /** 2475 * Blacklist a BSSID. This will avoid the AP if there are 2476 * alternate APs to connect 2477 * 2478 * @param bssid BSSID of the network 2479 */ 2480 public void addToBlacklist(String bssid) { 2481 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2482 } 2483 2484 /** 2485 * Clear the blacklist list 2486 */ 2487 public void clearBlacklist() { 2488 sendMessage(CMD_CLEAR_BLACKLIST); 2489 } 2490 2491 public void enableRssiPolling(boolean enabled) { 2492 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2493 } 2494 2495 public void enableAllNetworks() { 2496 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2497 } 2498 2499 /** 2500 * Start filtering Multicast v4 packets 2501 */ 2502 public void startFilteringMulticastV4Packets() { 2503 mFilteringMulticastV4Packets.set(true); 2504 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2505 } 2506 2507 /** 2508 * Stop filtering Multicast v4 packets 2509 */ 2510 public void stopFilteringMulticastV4Packets() { 2511 mFilteringMulticastV4Packets.set(false); 2512 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2513 } 2514 2515 /** 2516 * Start filtering Multicast v4 packets 2517 */ 2518 public void startFilteringMulticastV6Packets() { 2519 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2520 } 2521 2522 /** 2523 * Stop filtering Multicast v4 packets 2524 */ 2525 public void stopFilteringMulticastV6Packets() { 2526 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2527 } 2528 2529 /** 2530 * Set high performance mode of operation. 2531 * Enabling would set active power mode and disable suspend optimizations; 2532 * disabling would set auto power mode and enable suspend optimizations 2533 * 2534 * @param enable true if enable, false otherwise 2535 */ 2536 public void setHighPerfModeEnabled(boolean enable) { 2537 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2538 } 2539 2540 /** 2541 * Set the country code 2542 * 2543 * @param countryCode following ISO 3166 format 2544 * @param persist {@code true} if the setting should be remembered. 2545 */ 2546 public synchronized void setCountryCode(String countryCode, boolean persist) { 2547 // If it's a good country code, apply after the current 2548 // wifi connection is terminated; ignore resetting of code 2549 // for now (it is unclear what the chipset should do when 2550 // country code is reset) 2551 2552 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2553 // else only when the new country code is different from the current one to set 2554 2555 if (TextUtils.isEmpty(countryCode)) { 2556 if (DBG) log("Ignoring resetting of country code"); 2557 } else { 2558 int countryCodeSequence = mCountryCodeSequence.get(); 2559 String currentCountryCode = getCurrentCountryCode(); 2560 if (countryCodeSequence == 0 2561 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2562 2563 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2564 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2565 countryCode); 2566 } 2567 } 2568 } 2569 2570 /** 2571 * reset the country code to default 2572 */ 2573 public synchronized void resetCountryCode() { 2574 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2575 logd("resetting country code to " + mDefaultCountryCode); 2576 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2577 } 2578 } 2579 2580 /** 2581 * reset cached SIM credential data 2582 */ 2583 public synchronized void resetSimAuthNetworks() { 2584 sendMessage(CMD_RESET_SIM_NETWORKS); 2585 } 2586 2587 2588 /** 2589 * Get Network object of current wifi network 2590 * @return Network object of current wifi network 2591 */ 2592 public Network getCurrentNetwork() { 2593 if (mNetworkAgent != null) { 2594 return new Network(mNetworkAgent.netId); 2595 } else { 2596 return null; 2597 } 2598 } 2599 2600 /** 2601 * Get the country code 2602 * 2603 * @return countryCode following ISO 3166 format 2604 */ 2605 public String getCurrentCountryCode() { 2606 return mFacade.getStringSetting(mContext, Settings.Global.WIFI_COUNTRY_CODE); 2607 } 2608 2609 /** 2610 * Set the operational frequency band 2611 * 2612 * @param band 2613 * @param persist {@code true} if the setting should be remembered. 2614 */ 2615 public void setFrequencyBand(int band, boolean persist) { 2616 if (persist) { 2617 Settings.Global.putInt(mContext.getContentResolver(), 2618 Settings.Global.WIFI_FREQUENCY_BAND, 2619 band); 2620 } 2621 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2622 } 2623 2624 /** 2625 * Enable TDLS for a specific MAC address 2626 */ 2627 public void enableTdls(String remoteMacAddress, boolean enable) { 2628 int enabler = enable ? 1 : 0; 2629 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2630 } 2631 2632 /** 2633 * Returns the operational frequency band 2634 */ 2635 public int getFrequencyBand() { 2636 return mFrequencyBand.get(); 2637 } 2638 2639 /** 2640 * Returns the wifi configuration file 2641 */ 2642 public String getConfigFile() { 2643 return mWifiConfigStore.getConfigFile(); 2644 } 2645 2646 /** 2647 * Send a message indicating bluetooth adapter connection state changed 2648 */ 2649 public void sendBluetoothAdapterStateChange(int state) { 2650 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2651 } 2652 2653 /** 2654 * Send a message indicating a package has been uninstalled. 2655 */ 2656 public void removeAppConfigs(String packageName, int uid) { 2657 // Build partial AppInfo manually - package may not exist in database any more 2658 ApplicationInfo ai = new ApplicationInfo(); 2659 ai.packageName = packageName; 2660 ai.uid = uid; 2661 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2662 } 2663 2664 /** 2665 * Send a message indicating a user has been removed. 2666 */ 2667 public void removeUserConfigs(int userId) { 2668 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2669 } 2670 2671 /** 2672 * Save configuration on supplicant 2673 * 2674 * @return {@code true} if the operation succeeds, {@code false} otherwise 2675 * <p/> 2676 * TODO: deprecate this 2677 */ 2678 public boolean syncSaveConfig(AsyncChannel channel) { 2679 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2680 boolean result = (resultMsg.arg1 != FAILURE); 2681 resultMsg.recycle(); 2682 return result; 2683 } 2684 2685 public void updateBatteryWorkSource(WorkSource newSource) { 2686 synchronized (mRunningWifiUids) { 2687 try { 2688 if (newSource != null) { 2689 mRunningWifiUids.set(newSource); 2690 } 2691 if (mIsRunning) { 2692 if (mReportedRunning) { 2693 // If the work source has changed since last time, need 2694 // to remove old work from battery stats. 2695 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2696 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2697 mRunningWifiUids); 2698 mLastRunningWifiUids.set(mRunningWifiUids); 2699 } 2700 } else { 2701 // Now being started, report it. 2702 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2703 mLastRunningWifiUids.set(mRunningWifiUids); 2704 mReportedRunning = true; 2705 } 2706 } else { 2707 if (mReportedRunning) { 2708 // Last reported we were running, time to stop. 2709 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2710 mLastRunningWifiUids.clear(); 2711 mReportedRunning = false; 2712 } 2713 } 2714 mWakeLock.setWorkSource(newSource); 2715 } catch (RemoteException ignore) { 2716 } 2717 } 2718 } 2719 2720 @Override 2721 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2722 super.dump(fd, pw, args); 2723 mSupplicantStateTracker.dump(fd, pw, args); 2724 pw.println("mLinkProperties " + mLinkProperties); 2725 pw.println("mWifiInfo " + mWifiInfo); 2726 pw.println("mDhcpResults " + mDhcpResults); 2727 pw.println("mNetworkInfo " + mNetworkInfo); 2728 pw.println("mLastSignalLevel " + mLastSignalLevel); 2729 pw.println("mLastBssid " + mLastBssid); 2730 pw.println("mLastNetworkId " + mLastNetworkId); 2731 pw.println("mOperationalMode " + mOperationalMode); 2732 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2733 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2734 pw.println("Supplicant status " + mWifiNative.status(true)); 2735 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2736 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2737 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2738 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2739 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2740 pw.println("SSID whitelist :" ); 2741 for (int i=0; i < mWhiteListedSsids.length; i++) { 2742 pw.println(" " + mWhiteListedSsids[i]); 2743 } 2744 } 2745 if (mNetworkFactory != null) { 2746 mNetworkFactory.dump(fd, pw, args); 2747 } else { 2748 pw.println("mNetworkFactory is not initialized"); 2749 } 2750 2751 if (mUntrustedNetworkFactory != null) { 2752 mUntrustedNetworkFactory.dump(fd, pw, args); 2753 } else { 2754 pw.println("mUntrustedNetworkFactory is not initialized"); 2755 } 2756 pw.println(); 2757 updateWifiMetrics(); 2758 mWifiMetrics.dump(fd, pw, args); 2759 pw.println(); 2760 mNetworkFactory.dump(fd, pw, args); 2761 mUntrustedNetworkFactory.dump(fd, pw, args); 2762 pw.println(); 2763 2764 mWifiConfigStore.dump(fd, pw, args); 2765 pw.println(); 2766 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2767 mWifiLogger.dump(fd, pw, args); 2768 mWifiQualifiedNetworkSelector.dump(fd, pw, args); 2769 } 2770 2771 public void handleUserSwitch(int userId) { 2772 sendMessage(CMD_USER_SWITCH, userId); 2773 } 2774 2775 /** 2776 * ****************************************************** 2777 * Internal private functions 2778 * ****************************************************** 2779 */ 2780 2781 private void logStateAndMessage(Message message, State state) { 2782 messageHandlingStatus = 0; 2783 if (mLogMessages) { 2784 logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); 2785 } 2786 } 2787 2788 /** 2789 * helper, prints the milli time since boot wi and w/o suspended time 2790 */ 2791 String printTime() { 2792 StringBuilder sb = new StringBuilder(); 2793 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2794 sb.append("/").append(SystemClock.elapsedRealtime()); 2795 return sb.toString(); 2796 } 2797 2798 /** 2799 * Return the additional string to be logged by LogRec, default 2800 * 2801 * @param msg that was processed 2802 * @return information to be logged as a String 2803 */ 2804 protected String getLogRecString(Message msg) { 2805 WifiConfiguration config; 2806 Long now; 2807 String report; 2808 String key; 2809 StringBuilder sb = new StringBuilder(); 2810 if (mScreenOn) { 2811 sb.append("!"); 2812 } 2813 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2814 sb.append("(").append(messageHandlingStatus).append(")"); 2815 } 2816 sb.append(smToString(msg)); 2817 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2818 sb.append(" uid=" + msg.sendingUid); 2819 } 2820 sb.append(" ").append(printTime()); 2821 switch (msg.what) { 2822 case CMD_STARTED_GSCAN_DBG: 2823 case CMD_STARTED_PNO_DBG: 2824 sb.append(" "); 2825 sb.append(Integer.toString(msg.arg1)); 2826 sb.append(" "); 2827 sb.append(Integer.toString(msg.arg2)); 2828 if (msg.obj != null) { 2829 sb.append(" " + (String)msg.obj); 2830 } 2831 break; 2832 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2833 sb.append(" "); 2834 sb.append(Integer.toString(msg.arg1)); 2835 sb.append(" "); 2836 sb.append(Integer.toString(msg.arg2)); 2837 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2838 if (msg.obj != null) { 2839 sb.append(" " + (String)msg.obj); 2840 } 2841 break; 2842 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2843 sb.append(" "); 2844 sb.append(Integer.toString(msg.arg1)); 2845 sb.append(" "); 2846 sb.append(Integer.toString(msg.arg2)); 2847 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2848 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2849 sb.append(" autojoinAllowed="); 2850 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2851 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2852 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2853 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2854 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2855 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2856 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2857 break; 2858 case CMD_PNO_NETWORK_FOUND: 2859 sb.append(" "); 2860 sb.append(Integer.toString(msg.arg1)); 2861 sb.append(" "); 2862 sb.append(Integer.toString(msg.arg2)); 2863 if (msg.obj != null) { 2864 ScanResult[] results = (ScanResult[])msg.obj; 2865 for (int i = 0; i < results.length; i++) { 2866 sb.append(" ").append(results[i].SSID).append(" "); 2867 sb.append(results[i].frequency); 2868 sb.append(" ").append(results[i].level); 2869 } 2870 } 2871 break; 2872 case CMD_START_SCAN: 2873 now = System.currentTimeMillis(); 2874 sb.append(" "); 2875 sb.append(Integer.toString(msg.arg1)); 2876 sb.append(" "); 2877 sb.append(Integer.toString(msg.arg2)); 2878 sb.append(" ic="); 2879 sb.append(Integer.toString(sScanAlarmIntentCount)); 2880 if (msg.obj != null) { 2881 Bundle bundle = (Bundle) msg.obj; 2882 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2883 if (request != 0) { 2884 sb.append(" proc(ms):").append(now - request); 2885 } 2886 } 2887 if (mIsScanOngoing) sb.append(" onGoing"); 2888 if (mIsFullScanOngoing) sb.append(" full"); 2889 if (lastStartScanTimeStamp != 0) { 2890 sb.append(" started:").append(lastStartScanTimeStamp); 2891 sb.append(",").append(now - lastStartScanTimeStamp); 2892 } 2893 if (lastScanDuration != 0) { 2894 sb.append(" dur:").append(lastScanDuration); 2895 } 2896 sb.append(" cnt=").append(mDelayedScanCounter); 2897 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2898 sb.append(" f=").append(mWifiInfo.getFrequency()); 2899 sb.append(" sc=").append(mWifiInfo.score); 2900 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2901 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2902 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2903 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2904 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2905 if (lastScanFreqs != null) { 2906 sb.append(" list="); 2907 for(int freq : lastScanFreqs) { 2908 sb.append(freq).append(","); 2909 } 2910 } else { 2911 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2912 } 2913 report = reportOnTime(); 2914 if (report != null) { 2915 sb.append(" ").append(report); 2916 } 2917 break; 2918 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2919 sb.append(" "); 2920 sb.append(Integer.toString(msg.arg1)); 2921 sb.append(" "); 2922 sb.append(Integer.toString(msg.arg2)); 2923 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2924 if (stateChangeResult != null) { 2925 sb.append(stateChangeResult.toString()); 2926 } 2927 break; 2928 case WifiManager.SAVE_NETWORK: 2929 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2930 sb.append(" "); 2931 sb.append(Integer.toString(msg.arg1)); 2932 sb.append(" "); 2933 sb.append(Integer.toString(msg.arg2)); 2934 if (lastSavedConfigurationAttempt != null) { 2935 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2936 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2937 if (lastSavedConfigurationAttempt.hiddenSSID) { 2938 sb.append(" hidden"); 2939 } 2940 if (lastSavedConfigurationAttempt.preSharedKey != null 2941 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2942 sb.append(" hasPSK"); 2943 } 2944 if (lastSavedConfigurationAttempt.ephemeral) { 2945 sb.append(" ephemeral"); 2946 } 2947 if (lastSavedConfigurationAttempt.selfAdded) { 2948 sb.append(" selfAdded"); 2949 } 2950 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2951 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2952 } 2953 break; 2954 case WifiManager.FORGET_NETWORK: 2955 sb.append(" "); 2956 sb.append(Integer.toString(msg.arg1)); 2957 sb.append(" "); 2958 sb.append(Integer.toString(msg.arg2)); 2959 if (lastForgetConfigurationAttempt != null) { 2960 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2961 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2962 if (lastForgetConfigurationAttempt.hiddenSSID) { 2963 sb.append(" hidden"); 2964 } 2965 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2966 sb.append(" hasPSK"); 2967 } 2968 if (lastForgetConfigurationAttempt.ephemeral) { 2969 sb.append(" ephemeral"); 2970 } 2971 if (lastForgetConfigurationAttempt.selfAdded) { 2972 sb.append(" selfAdded"); 2973 } 2974 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2975 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2976 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 2977 lastForgetConfigurationAttempt.getNetworkSelectionStatus(); 2978 sb.append(" ajst=").append( 2979 netWorkSelectionStatus.getNetworkStatusString()); 2980 } 2981 break; 2982 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg1)); 2985 sb.append(" "); 2986 sb.append(Integer.toString(msg.arg2)); 2987 String bssid = (String) msg.obj; 2988 if (bssid != null && bssid.length() > 0) { 2989 sb.append(" "); 2990 sb.append(bssid); 2991 } 2992 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2993 break; 2994 case WifiMonitor.SCAN_RESULTS_EVENT: 2995 sb.append(" "); 2996 sb.append(Integer.toString(msg.arg1)); 2997 sb.append(" "); 2998 sb.append(Integer.toString(msg.arg2)); 2999 if (mScanResults != null) { 3000 sb.append(" found="); 3001 sb.append(mScanResults.size()); 3002 } 3003 sb.append(" known=").append(mNumScanResultsKnown); 3004 sb.append(" got=").append(mNumScanResultsReturned); 3005 if (lastScanDuration != 0) { 3006 sb.append(" dur:").append(lastScanDuration); 3007 } 3008 if (mOnTime != 0) { 3009 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 3010 sb.append(",").append(mOnTime); 3011 } 3012 if (mTxTime != 0) { 3013 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 3014 sb.append(",").append(mTxTime); 3015 } 3016 if (mRxTime != 0) { 3017 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 3018 sb.append(",").append(mRxTime); 3019 } 3020 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3021 sb.append(String.format(" con=%d", mConnectionRequests)); 3022 key = mWifiConfigStore.getLastSelectedConfiguration(); 3023 if (key != null) { 3024 sb.append(" last=").append(key); 3025 } 3026 break; 3027 case WifiMonitor.SCAN_FAILED_EVENT: 3028 break; 3029 case WifiMonitor.NETWORK_CONNECTION_EVENT: 3030 sb.append(" "); 3031 sb.append(Integer.toString(msg.arg1)); 3032 sb.append(" "); 3033 sb.append(Integer.toString(msg.arg2)); 3034 sb.append(" ").append(mLastBssid); 3035 sb.append(" nid=").append(mLastNetworkId); 3036 config = getCurrentWifiConfiguration(); 3037 if (config != null) { 3038 sb.append(" ").append(config.configKey()); 3039 } 3040 key = mWifiConfigStore.getLastSelectedConfiguration(); 3041 if (key != null) { 3042 sb.append(" last=").append(key); 3043 } 3044 break; 3045 case CMD_TARGET_BSSID: 3046 case CMD_ASSOCIATED_BSSID: 3047 sb.append(" "); 3048 sb.append(Integer.toString(msg.arg1)); 3049 sb.append(" "); 3050 sb.append(Integer.toString(msg.arg2)); 3051 if (msg.obj != null) { 3052 sb.append(" BSSID=").append((String) msg.obj); 3053 } 3054 if (mTargetRoamBSSID != null) { 3055 sb.append(" Target=").append(mTargetRoamBSSID); 3056 } 3057 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3058 break; 3059 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 3060 if (msg.obj != null) { 3061 sb.append(" ").append((String) msg.obj); 3062 } 3063 sb.append(" nid=").append(msg.arg1); 3064 sb.append(" reason=").append(msg.arg2); 3065 if (mLastBssid != null) { 3066 sb.append(" lastbssid=").append(mLastBssid); 3067 } 3068 if (mWifiInfo.getFrequency() != -1) { 3069 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3070 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3071 } 3072 if (linkDebouncing) { 3073 sb.append(" debounce"); 3074 } 3075 break; 3076 case WifiMonitor.SSID_TEMP_DISABLED: 3077 case WifiMonitor.SSID_REENABLED: 3078 sb.append(" nid=").append(msg.arg1); 3079 if (msg.obj != null) { 3080 sb.append(" ").append((String) msg.obj); 3081 } 3082 config = getCurrentWifiConfiguration(); 3083 if (config != null) { 3084 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3085 config.getNetworkSelectionStatus(); 3086 sb.append(" cur=").append(config.configKey()); 3087 sb.append(" ajst=").append(netWorkSelectionStatus.getNetworkStatusString()); 3088 if (config.selfAdded) { 3089 sb.append(" selfAdded"); 3090 } 3091 if (config.status != 0) { 3092 sb.append(" st=").append(config.status); 3093 sb.append(" rs=").append( 3094 netWorkSelectionStatus.getNetworkDisableReasonString()); 3095 } 3096 if (config.lastConnected != 0) { 3097 now = System.currentTimeMillis(); 3098 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 3099 } 3100 if (mLastBssid != null) { 3101 sb.append(" lastbssid=").append(mLastBssid); 3102 } 3103 if (mWifiInfo.getFrequency() != -1) { 3104 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3105 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3106 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 3107 } 3108 } 3109 break; 3110 case CMD_RSSI_POLL: 3111 case CMD_UNWANTED_NETWORK: 3112 case WifiManager.RSSI_PKTCNT_FETCH: 3113 sb.append(" "); 3114 sb.append(Integer.toString(msg.arg1)); 3115 sb.append(" "); 3116 sb.append(Integer.toString(msg.arg2)); 3117 if (mWifiInfo.getSSID() != null) 3118 if (mWifiInfo.getSSID() != null) 3119 sb.append(" ").append(mWifiInfo.getSSID()); 3120 if (mWifiInfo.getBSSID() != null) 3121 sb.append(" ").append(mWifiInfo.getBSSID()); 3122 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3123 sb.append(" f=").append(mWifiInfo.getFrequency()); 3124 sb.append(" sc=").append(mWifiInfo.score); 3125 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 3126 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 3127 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 3128 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 3129 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 3130 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3131 report = reportOnTime(); 3132 if (report != null) { 3133 sb.append(" ").append(report); 3134 } 3135 if (wifiScoringReport != null) { 3136 sb.append(wifiScoringReport); 3137 } 3138 if (mConnectedModeGScanOffloadStarted) { 3139 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3140 } else { 3141 sb.append(" offload-stopped"); 3142 } 3143 break; 3144 case CMD_AUTO_CONNECT: 3145 case WifiManager.CONNECT_NETWORK: 3146 sb.append(" "); 3147 sb.append(Integer.toString(msg.arg1)); 3148 sb.append(" "); 3149 sb.append(Integer.toString(msg.arg2)); 3150 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3151 if (config != null) { 3152 sb.append(" ").append(config.configKey()); 3153 if (config.visibility != null) { 3154 sb.append(" ").append(config.visibility.toString()); 3155 } 3156 } 3157 if (mTargetRoamBSSID != null) { 3158 sb.append(" ").append(mTargetRoamBSSID); 3159 } 3160 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3161 config = getCurrentWifiConfiguration(); 3162 if (config != null) { 3163 sb.append(config.configKey()); 3164 if (config.visibility != null) { 3165 sb.append(" ").append(config.visibility.toString()); 3166 } 3167 } 3168 break; 3169 case CMD_AUTO_ROAM: 3170 sb.append(" "); 3171 sb.append(Integer.toString(msg.arg1)); 3172 sb.append(" "); 3173 sb.append(Integer.toString(msg.arg2)); 3174 ScanResult result = (ScanResult) msg.obj; 3175 if (result != null) { 3176 now = System.currentTimeMillis(); 3177 sb.append(" bssid=").append(result.BSSID); 3178 sb.append(" rssi=").append(result.level); 3179 sb.append(" freq=").append(result.frequency); 3180 if (result.seen > 0 && result.seen < now) { 3181 sb.append(" seen=").append(now - result.seen); 3182 } else { 3183 // Somehow the timestamp for this scan result is inconsistent 3184 sb.append(" !seen=").append(result.seen); 3185 } 3186 } 3187 if (mTargetRoamBSSID != null) { 3188 sb.append(" ").append(mTargetRoamBSSID); 3189 } 3190 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3191 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3192 break; 3193 case CMD_ADD_OR_UPDATE_NETWORK: 3194 sb.append(" "); 3195 sb.append(Integer.toString(msg.arg1)); 3196 sb.append(" "); 3197 sb.append(Integer.toString(msg.arg2)); 3198 if (msg.obj != null) { 3199 config = (WifiConfiguration) msg.obj; 3200 sb.append(" ").append(config.configKey()); 3201 sb.append(" prio=").append(config.priority); 3202 sb.append(" status=").append(config.status); 3203 if (config.BSSID != null) { 3204 sb.append(" ").append(config.BSSID); 3205 } 3206 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3207 if (curConfig != null) { 3208 if (curConfig.configKey().equals(config.configKey())) { 3209 sb.append(" is current"); 3210 } else { 3211 sb.append(" current=").append(curConfig.configKey()); 3212 sb.append(" prio=").append(curConfig.priority); 3213 sb.append(" status=").append(curConfig.status); 3214 } 3215 } 3216 } 3217 break; 3218 case WifiManager.DISABLE_NETWORK: 3219 case CMD_ENABLE_NETWORK: 3220 sb.append(" "); 3221 sb.append(Integer.toString(msg.arg1)); 3222 sb.append(" "); 3223 sb.append(Integer.toString(msg.arg2)); 3224 key = mWifiConfigStore.getLastSelectedConfiguration(); 3225 if (key != null) { 3226 sb.append(" last=").append(key); 3227 } 3228 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3229 if (config != null && (key == null || !config.configKey().equals(key))) { 3230 sb.append(" target=").append(key); 3231 } 3232 break; 3233 case CMD_GET_CONFIGURED_NETWORKS: 3234 sb.append(" "); 3235 sb.append(Integer.toString(msg.arg1)); 3236 sb.append(" "); 3237 sb.append(Integer.toString(msg.arg2)); 3238 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3239 break; 3240 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3241 sb.append(" "); 3242 sb.append(Integer.toString(msg.arg1)); 3243 sb.append(" "); 3244 sb.append(Integer.toString(msg.arg2)); 3245 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3246 sb.append(",").append(mWifiInfo.txBad); 3247 sb.append(",").append(mWifiInfo.txRetries); 3248 break; 3249 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3250 sb.append(" "); 3251 sb.append(Integer.toString(msg.arg1)); 3252 sb.append(" "); 3253 sb.append(Integer.toString(msg.arg2)); 3254 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3255 sb.append(" OK "); 3256 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3257 sb.append(" FAIL "); 3258 } 3259 if (mLinkProperties != null) { 3260 sb.append(" "); 3261 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3262 } 3263 break; 3264 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3265 sb.append(" "); 3266 sb.append(Integer.toString(msg.arg1)); 3267 sb.append(" "); 3268 sb.append(Integer.toString(msg.arg2)); 3269 if (msg.obj != null) { 3270 NetworkInfo info = (NetworkInfo) msg.obj; 3271 NetworkInfo.State state = info.getState(); 3272 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3273 if (state != null) { 3274 sb.append(" st=").append(state); 3275 } 3276 if (detailedState != null) { 3277 sb.append("/").append(detailedState); 3278 } 3279 } 3280 break; 3281 case CMD_IP_CONFIGURATION_LOST: 3282 int count = -1; 3283 WifiConfiguration c = getCurrentWifiConfiguration(); 3284 if (c != null) { 3285 count = c.getNetworkSelectionStatus().getDisableReasonCounter( 3286 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 3287 } 3288 sb.append(" "); 3289 sb.append(Integer.toString(msg.arg1)); 3290 sb.append(" "); 3291 sb.append(Integer.toString(msg.arg2)); 3292 sb.append(" failures: "); 3293 sb.append(Integer.toString(count)); 3294 sb.append("/"); 3295 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3296 if (mWifiInfo.getBSSID() != null) { 3297 sb.append(" ").append(mWifiInfo.getBSSID()); 3298 } 3299 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3300 break; 3301 case CMD_UPDATE_LINKPROPERTIES: 3302 sb.append(" "); 3303 sb.append(Integer.toString(msg.arg1)); 3304 sb.append(" "); 3305 sb.append(Integer.toString(msg.arg2)); 3306 if (mLinkProperties != null) { 3307 sb.append(" "); 3308 sb.append(getLinkPropertiesSummary(mLinkProperties)); 3309 } 3310 break; 3311 case CMD_IP_REACHABILITY_LOST: 3312 if (msg.obj != null) { 3313 sb.append(" ").append((String) msg.obj); 3314 } 3315 break; 3316 case CMD_SET_COUNTRY_CODE: 3317 sb.append(" "); 3318 sb.append(Integer.toString(msg.arg1)); 3319 sb.append(" "); 3320 sb.append(Integer.toString(msg.arg2)); 3321 if (msg.obj != null) { 3322 sb.append(" ").append((String) msg.obj); 3323 } 3324 break; 3325 case CMD_ROAM_WATCHDOG_TIMER: 3326 sb.append(" "); 3327 sb.append(Integer.toString(msg.arg1)); 3328 sb.append(" "); 3329 sb.append(Integer.toString(msg.arg2)); 3330 sb.append(" cur=").append(roamWatchdogCount); 3331 break; 3332 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3333 sb.append(" "); 3334 sb.append(Integer.toString(msg.arg1)); 3335 sb.append(" "); 3336 sb.append(Integer.toString(msg.arg2)); 3337 sb.append(" cur=").append(disconnectingWatchdogCount); 3338 break; 3339 case CMD_START_RSSI_MONITORING_OFFLOAD: 3340 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3341 case CMD_RSSI_THRESHOLD_BREACH: 3342 sb.append(" rssi="); 3343 sb.append(Integer.toString(msg.arg1)); 3344 sb.append(" thresholds="); 3345 sb.append(Arrays.toString(mRssiRanges)); 3346 break; 3347 case CMD_USER_SWITCH: 3348 sb.append(" userId="); 3349 sb.append(Integer.toString(msg.arg1)); 3350 break; 3351 case CMD_IPV4_PROVISIONING_SUCCESS: 3352 sb.append(" "); 3353 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3354 sb.append("DHCP_OK"); 3355 } else if (msg.arg1 == CMD_STATIC_IP_SUCCESS) { 3356 sb.append("STATIC_OK"); 3357 } else { 3358 sb.append(Integer.toString(msg.arg1)); 3359 } 3360 break; 3361 case CMD_IPV4_PROVISIONING_FAILURE: 3362 sb.append(" "); 3363 if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3364 sb.append("DHCP_FAIL"); 3365 } else if (msg.arg1 == CMD_STATIC_IP_FAILURE) { 3366 sb.append("STATIC_FAIL"); 3367 } else { 3368 sb.append(Integer.toString(msg.arg1)); 3369 } 3370 break; 3371 default: 3372 sb.append(" "); 3373 sb.append(Integer.toString(msg.arg1)); 3374 sb.append(" "); 3375 sb.append(Integer.toString(msg.arg2)); 3376 break; 3377 } 3378 3379 return sb.toString(); 3380 } 3381 3382 private void stopPnoOffload() { 3383 3384 // clear the PNO list 3385 if (!mWifiNative.setPnoList(null, WifiStateMachine.this)) { 3386 Log.e(TAG, "Failed to stop pno"); 3387 } 3388 3389 } 3390 3391 3392 private boolean configureSsidWhiteList() { 3393 3394 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3395 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3396 return true; 3397 } 3398 3399 if (!mWifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3400 loge("configureSsidWhiteList couldnt program SSID list, size " 3401 + mWhiteListedSsids.length); 3402 return false; 3403 } 3404 3405 logd("configureSsidWhiteList success"); 3406 return true; 3407 } 3408 3409 // In associated more, lazy roam will be looking for 5GHz roam candidate 3410 //Fixme: This is for network selection offload , whole function need to be re-written according 3411 // to the new design 3412 private boolean configureLazyRoam() { 3413 /*boolean status; 3414 if (!useHalBasedAutoJoinOffload()) return false; 3415 3416 WifiNative.WifiLazyRoamParams params = new WifiNative.WifiLazyRoamParams(); 3417 //params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3418 //params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3419 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3420 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3421 params.A_band_max_boost = 65; 3422 params.lazy_roam_hysteresis = 25; 3423 params.alert_roam_rssi_trigger = -75; 3424 3425 if (DBG) { 3426 Log.e(TAG, "configureLazyRoam " + params.toString()); 3427 } 3428 3429 if (!mWifiNative.setLazyRoam(true, params)) { 3430 3431 Log.e(TAG, "configureLazyRoam couldnt program params"); 3432 3433 return false; 3434 } 3435 if (DBG) { 3436 Log.e(TAG, "configureLazyRoam success"); 3437 }*/ 3438 return true; 3439 } 3440 3441 // In associated more, lazy roam will be looking for 5GHz roam candidate 3442 private boolean stopLazyRoam() { 3443 boolean status; 3444 if (!useHalBasedAutoJoinOffload()) return false; 3445 if (DBG) { 3446 Log.e(TAG, "stopLazyRoam"); 3447 } 3448 return mWifiNative.setLazyRoam(false, null); 3449 } 3450 3451 private boolean startGScanConnectedModeOffload(String reason) { 3452 if (DBG) { 3453 if (reason == null) { 3454 reason = ""; 3455 } 3456 logd("startGScanConnectedModeOffload " + reason); 3457 } 3458 stopGScan("startGScanConnectedModeOffload " + reason); 3459 if (!mScreenOn) return false; 3460 3461 if (USE_PAUSE_SCANS) { 3462 mWifiNative.pauseScan(); 3463 } 3464 mPnoEnabled = configurePno(); 3465 if (mPnoEnabled == false) { 3466 if (USE_PAUSE_SCANS) { 3467 mWifiNative.restartScan(); 3468 } 3469 return false; 3470 } 3471 mLazyRoamEnabled = configureLazyRoam(); 3472 if (mLazyRoamEnabled == false) { 3473 if (USE_PAUSE_SCANS) { 3474 mWifiNative.restartScan(); 3475 } 3476 return false; 3477 } 3478 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3479 configureSsidWhiteList(); 3480 } 3481 if (!startConnectedGScan(reason)) { 3482 if (USE_PAUSE_SCANS) { 3483 mWifiNative.restartScan(); 3484 } 3485 return false; 3486 } 3487 if (USE_PAUSE_SCANS) { 3488 mWifiNative.restartScan(); 3489 } 3490 mConnectedModeGScanOffloadStarted = true; 3491 if (DBG) { 3492 logd("startGScanConnectedModeOffload success"); 3493 } 3494 return true; 3495 } 3496 3497 private boolean startGScanDisconnectedModeOffload(String reason) { 3498 if (DBG) { 3499 logd("startGScanDisconnectedModeOffload " + reason); 3500 } 3501 stopGScan("startGScanDisconnectedModeOffload " + reason); 3502 if (USE_PAUSE_SCANS) { 3503 mWifiNative.pauseScan(); 3504 } 3505 mPnoEnabled = configurePno(); 3506 if (mPnoEnabled == false) { 3507 if (USE_PAUSE_SCANS) { 3508 mWifiNative.restartScan(); 3509 } 3510 return false; 3511 } 3512 if (!startDisconnectedGScan(reason)) { 3513 if (USE_PAUSE_SCANS) { 3514 mWifiNative.restartScan(); 3515 } 3516 return false; 3517 } 3518 if (USE_PAUSE_SCANS) { 3519 mWifiNative.restartScan(); 3520 } 3521 return true; 3522 } 3523 3524 private boolean configurePno() { 3525 if (!useHalBasedAutoJoinOffload()) return false; 3526 3527 if (mWifiScanner == null) { 3528 log("configurePno: mWifiScanner is null "); 3529 return true; 3530 } 3531 3532 List<WifiNative.WifiPnoNetwork> llist = null; 3533 //TODO: add getPnoList in WifiQualifiedNetworkSelector 3534 //mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3535 if (llist == null || llist.size() == 0) { 3536 stopPnoOffload(); 3537 log("configurePno: empty PNO list "); 3538 return true; 3539 } 3540 if (DBG) { 3541 log("configurePno: got llist size " + llist.size()); 3542 } 3543 3544 // first program the network we want to look for thru the pno API 3545 WifiNative.WifiPnoNetwork list[] 3546 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3547 3548 if (!mWifiNative.setPnoList(list, WifiStateMachine.this)) { 3549 Log.e(TAG, "Failed to set pno, length = " + list.length); 3550 return false; 3551 } 3552 3553 if (true) { 3554 StringBuilder sb = new StringBuilder(); 3555 for (WifiNative.WifiPnoNetwork network : list) { 3556 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3557 sb.append(" flags="); 3558 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3559 sb.append("] "); 3560 3561 } 3562 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3563 } 3564 return true; 3565 } 3566 3567 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3568 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3569 3570 private boolean startConnectedGScan(String reason) { 3571 // send a scan background request so as to kick firmware 3572 // 5GHz roaming and autojoin 3573 // We do this only if screen is on 3574 WifiScanner.ScanSettings settings; 3575 3576 if (mPnoEnabled || mLazyRoamEnabled) { 3577 settings = new WifiScanner.ScanSettings(); 3578 settings.band = WifiScanner.WIFI_BAND_BOTH; 3579 long now = System.currentTimeMillis(); 3580 3581 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3582 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3583 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3584 } else { 3585 mGScanStartTimeMilli = now; 3586 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3587 // if we start offload with short interval, then reconfigure it after a given 3588 // duration of time so as to reduce the scan frequency 3589 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3590 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3591 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3592 (long)delay); 3593 mRestartAutoJoinOffloadCounter++; 3594 } 3595 mGScanPeriodMilli = settings.periodInMs; 3596 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3597 if (DBG) { 3598 log("startConnectedScan: settings band="+ settings.band 3599 + " period=" + settings.periodInMs); 3600 } 3601 3602 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3603 if (true) { 3604 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3605 } 3606 } 3607 return true; 3608 } 3609 3610 private boolean startDisconnectedGScan(String reason) { 3611 // send a scan background request so as to kick firmware 3612 // PNO 3613 // This is done in both screen On and screen Off modes 3614 WifiScanner.ScanSettings settings; 3615 3616 if (mWifiScanner == null) { 3617 log("startDisconnectedGScan: no wifi scanner"); 3618 return false; 3619 } 3620 3621 if (mPnoEnabled || mLazyRoamEnabled) { 3622 settings = new WifiScanner.ScanSettings(); 3623 settings.band = WifiScanner.WIFI_BAND_BOTH; 3624 long now = System.currentTimeMillis(); 3625 3626 3627 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3628 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3629 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3630 } else { 3631 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3632 mGScanStartTimeMilli = now; 3633 // if we start offload with short interval, then reconfigure it after a given 3634 // duration of time so as to reduce the scan frequency 3635 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3636 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3637 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3638 (long)delay); 3639 mRestartAutoJoinOffloadCounter++; 3640 } 3641 mGScanPeriodMilli = settings.periodInMs; 3642 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3643 if (DBG) { 3644 log("startDisconnectedScan: settings band="+ settings.band 3645 + " period=" + settings.periodInMs); 3646 } 3647 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3648 if (true) { 3649 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3650 } 3651 } 3652 return true; 3653 } 3654 3655 private boolean stopGScan(String reason) { 3656 mGScanStartTimeMilli = 0; 3657 mGScanPeriodMilli = 0; 3658 if (mWifiScanner != null) { 3659 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3660 } 3661 mConnectedModeGScanOffloadStarted = false; 3662 if (true) { 3663 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3664 } 3665 return true; 3666 } 3667 3668 private void handleScreenStateChanged(boolean screenOn) { 3669 mScreenOn = screenOn; 3670 if (PDBG) { 3671 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3672 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3673 + " state " + getCurrentState().getName() 3674 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3675 } 3676 enableRssiPolling(screenOn); 3677 if (mUserWantsSuspendOpt.get()) { 3678 if (screenOn) { 3679 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3680 } else { 3681 // Allow 2s for suspend optimizations to be set 3682 mSuspendWakeLock.acquire(2000); 3683 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3684 } 3685 } 3686 mScreenBroadcastReceived.set(true); 3687 3688 getWifiLinkLayerStats(false); 3689 mOnTimeScreenStateChange = mOnTime; 3690 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3691 3692 cancelDelayedScan(); 3693 3694 if (screenOn) { 3695 enableBackgroundScan(false); 3696 setScanAlarm(false); 3697 clearBlacklist(); 3698 3699 fullBandConnectedTimeIntervalMilli 3700 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3701 // In either Disconnectedstate or ConnectedState, 3702 // start the scan alarm so as to enable autojoin 3703 if (getCurrentState() == mConnectedState 3704 && allowFullBandScanAndAssociated()) { 3705 if (useHalBasedAutoJoinOffload()) { 3706 startGScanConnectedModeOffload("screenOnConnected"); 3707 } else { 3708 // Scan after 500ms 3709 startDelayedScan(500, null, null); 3710 } 3711 } else if (getCurrentState() == mDisconnectedState) { 3712 if (useHalBasedAutoJoinOffload()) { 3713 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3714 } else { 3715 // Scan after 500ms 3716 startDelayedScan(500, null, null); 3717 } 3718 } 3719 } else { 3720 if (getCurrentState() == mDisconnectedState) { 3721 // Screen Off and Disconnected and chipset doesn't support scan offload 3722 // => start scan alarm 3723 // Screen Off and Disconnected and chipset does support scan offload 3724 // => will use scan offload (i.e. background scan) 3725 if (useHalBasedAutoJoinOffload()) { 3726 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3727 } else { 3728 if (!mBackgroundScanSupported) { 3729 setScanAlarm(true); 3730 } else { 3731 if (!mIsScanOngoing) { 3732 enableBackgroundScan(true); 3733 } 3734 } 3735 } 3736 } else { 3737 enableBackgroundScan(false); 3738 if (useHalBasedAutoJoinOffload()) { 3739 // don't try stop Gscan if it is not enabled 3740 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3741 } 3742 } 3743 } 3744 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3745 3746 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3747 } 3748 3749 private void checkAndSetConnectivityInstance() { 3750 if (mCm == null) { 3751 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3752 } 3753 } 3754 3755 private boolean startTethering(ArrayList<String> available) { 3756 3757 boolean wifiAvailable = false; 3758 3759 checkAndSetConnectivityInstance(); 3760 3761 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3762 3763 for (String intf : available) { 3764 for (String regex : wifiRegexs) { 3765 if (intf.matches(regex)) { 3766 3767 InterfaceConfiguration ifcg = null; 3768 try { 3769 ifcg = mNwService.getInterfaceConfig(intf); 3770 if (ifcg != null) { 3771 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3772 ifcg.setLinkAddress(new LinkAddress( 3773 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3774 ifcg.setInterfaceUp(); 3775 3776 mNwService.setInterfaceConfig(intf, ifcg); 3777 } 3778 } catch (Exception e) { 3779 loge("Error configuring interface " + intf + ", :" + e); 3780 return false; 3781 } 3782 3783 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3784 loge("Error tethering on " + intf); 3785 return false; 3786 } 3787 mTetherInterfaceName = intf; 3788 return true; 3789 } 3790 } 3791 } 3792 // We found no interfaces to tether 3793 return false; 3794 } 3795 3796 private void stopTethering() { 3797 3798 checkAndSetConnectivityInstance(); 3799 3800 /* Clear the interface config to allow dhcp correctly configure new 3801 ip settings */ 3802 InterfaceConfiguration ifcg = null; 3803 try { 3804 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3805 if (ifcg != null) { 3806 ifcg.setLinkAddress( 3807 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3808 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3809 } 3810 } catch (Exception e) { 3811 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3812 } 3813 3814 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3815 loge("Untether initiate failed!"); 3816 } 3817 } 3818 3819 private boolean isWifiTethered(ArrayList<String> active) { 3820 3821 checkAndSetConnectivityInstance(); 3822 3823 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3824 for (String intf : active) { 3825 for (String regex : wifiRegexs) { 3826 if (intf.matches(regex)) { 3827 return true; 3828 } 3829 } 3830 } 3831 // We found no interfaces that are tethered 3832 return false; 3833 } 3834 3835 /** 3836 * Set the country code from the system setting value, if any. 3837 */ 3838 private void initializeCountryCode() { 3839 String countryCode = getCurrentCountryCode(); 3840 if (countryCode != null && !countryCode.isEmpty()) { 3841 setCountryCode(countryCode, false); 3842 } else { 3843 //use driver default 3844 } 3845 } 3846 3847 /** 3848 * Set the frequency band from the system setting value, if any. 3849 */ 3850 private void setFrequencyBand() { 3851 int band = mFacade.getIntegerSetting(mContext, 3852 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3853 3854 if (mWifiNative.setBand(band)) { 3855 mFrequencyBand.set(band); 3856 if (PDBG) { 3857 logd("done set frequency band " + band); 3858 mWifiQualifiedNetworkSelector.setUserPreferedBand(band); 3859 } 3860 } else { 3861 loge("Failed to set frequency band " + band); 3862 } 3863 } 3864 3865 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3866 if (DBG) { 3867 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3868 + " -want " + mUserWantsSuspendOpt.get() 3869 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3870 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3871 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3872 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3873 } 3874 //mWifiNative.setSuspendOptimizations(enabled); 3875 3876 if (enabled) { 3877 mSuspendOptNeedsDisabled &= ~reason; 3878 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3879 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3880 if (DBG) { 3881 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3882 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3883 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3884 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3885 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3886 } 3887 mWifiNative.setSuspendOptimizations(true); 3888 } 3889 } else { 3890 mSuspendOptNeedsDisabled |= reason; 3891 mWifiNative.setSuspendOptimizations(false); 3892 } 3893 } 3894 3895 private void setSuspendOptimizations(int reason, boolean enabled) { 3896 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3897 if (enabled) { 3898 mSuspendOptNeedsDisabled &= ~reason; 3899 } else { 3900 mSuspendOptNeedsDisabled |= reason; 3901 } 3902 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3903 } 3904 3905 private void setWifiState(int wifiState) { 3906 final int previousWifiState = mWifiState.get(); 3907 3908 try { 3909 if (wifiState == WIFI_STATE_ENABLED) { 3910 mBatteryStats.noteWifiOn(); 3911 } else if (wifiState == WIFI_STATE_DISABLED) { 3912 mBatteryStats.noteWifiOff(); 3913 } 3914 } catch (RemoteException e) { 3915 loge("Failed to note battery stats in wifi"); 3916 } 3917 3918 mWifiState.set(wifiState); 3919 3920 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3921 3922 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3923 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3924 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3925 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3926 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3927 } 3928 3929 private void setWifiApState(int wifiApState, int reason) { 3930 final int previousWifiApState = mWifiApState.get(); 3931 3932 try { 3933 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3934 mBatteryStats.noteWifiOn(); 3935 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3936 mBatteryStats.noteWifiOff(); 3937 } 3938 } catch (RemoteException e) { 3939 loge("Failed to note battery stats in wifi"); 3940 } 3941 3942 // Update state 3943 mWifiApState.set(wifiApState); 3944 3945 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3946 3947 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3948 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3949 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3950 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3951 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3952 //only set reason number when softAP start failed 3953 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3954 } 3955 3956 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3957 } 3958 3959 private void setScanResults() { 3960 mNumScanResultsKnown = 0; 3961 mNumScanResultsReturned = 0; 3962 3963 ArrayList<ScanDetail> scanResults = mWifiNative.getScanResults(); 3964 3965 if (scanResults.isEmpty()) { 3966 mScanResults = new ArrayList<>(); 3967 return; 3968 } 3969 3970 mWifiConfigStore.trimANQPCache(false); 3971 3972 synchronized (mScanResultCache) { 3973 mScanResults = scanResults; 3974 mNumScanResultsReturned = mScanResults.size(); 3975 for (ScanDetail resultDetail : mScanResults) { 3976 mScanResultCache.put(resultDetail.getNetworkDetail(), resultDetail); 3977 } 3978 } 3979 if (mNumScanResultsReturned > 0) { 3980 mWifiMetrics.incrementNonEmptyScanResultCount(); 3981 } else { 3982 mWifiMetrics.incrementEmptyScanResultCount(); 3983 } 3984 3985 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false); 3986 3987 if (linkDebouncing) { 3988 // If debouncing, we dont re-select a SSID or BSSID hence 3989 // there is no need to call the network selection code 3990 // in WifiAutoJoinController, instead, 3991 // just try to reconnect to the same SSID by triggering a roam 3992 // The third parameter 1 means roam not from network selection but debouncing 3993 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3994 } 3995 } 3996 3997 /* 3998 * Fetch RSSI, linkspeed, and frequency on current connection 3999 */ 4000 private void fetchRssiLinkSpeedAndFrequencyNative() { 4001 Integer newRssi = null; 4002 Integer newLinkSpeed = null; 4003 Integer newFrequency = null; 4004 4005 String signalPoll = mWifiNative.signalPoll(); 4006 4007 if (signalPoll != null) { 4008 String[] lines = signalPoll.split("\n"); 4009 for (String line : lines) { 4010 String[] prop = line.split("="); 4011 if (prop.length < 2) continue; 4012 try { 4013 if (prop[0].equals("RSSI")) { 4014 newRssi = Integer.parseInt(prop[1]); 4015 } else if (prop[0].equals("LINKSPEED")) { 4016 newLinkSpeed = Integer.parseInt(prop[1]); 4017 } else if (prop[0].equals("FREQUENCY")) { 4018 newFrequency = Integer.parseInt(prop[1]); 4019 } 4020 } catch (NumberFormatException e) { 4021 //Ignore, defaults on rssi and linkspeed are assigned 4022 } 4023 } 4024 } 4025 4026 if (PDBG) { 4027 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi + 4028 " linkspeed=" + newLinkSpeed + " freq=" + newFrequency); 4029 } 4030 4031 if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4032 // screen out invalid values 4033 /* some implementations avoid negative values by adding 256 4034 * so we need to adjust for that here. 4035 */ 4036 if (newRssi > 0) newRssi -= 256; 4037 mWifiInfo.setRssi(newRssi); 4038 /* 4039 * Rather then sending the raw RSSI out every time it 4040 * changes, we precalculate the signal level that would 4041 * be displayed in the status bar, and only send the 4042 * broadcast if that much more coarse-grained number 4043 * changes. This cuts down greatly on the number of 4044 * broadcasts, at the cost of not informing others 4045 * interested in RSSI of all the changes in signal 4046 * level. 4047 */ 4048 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4049 if (newSignalLevel != mLastSignalLevel) { 4050 updateCapabilities(getCurrentWifiConfiguration()); 4051 sendRssiChangeBroadcast(newRssi); 4052 } 4053 mLastSignalLevel = newSignalLevel; 4054 } else { 4055 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4056 updateCapabilities(getCurrentWifiConfiguration()); 4057 } 4058 4059 if (newLinkSpeed != null) { 4060 mWifiInfo.setLinkSpeed(newLinkSpeed); 4061 } 4062 if (newFrequency != null && newFrequency > 0) { 4063 if (ScanResult.is5GHz(newFrequency)) { 4064 mWifiConnectionStatistics.num5GhzConnected++; 4065 } 4066 if (ScanResult.is24GHz(newFrequency)) { 4067 mWifiConnectionStatistics.num24GhzConnected++; 4068 } 4069 mWifiInfo.setFrequency(newFrequency); 4070 } 4071 mWifiConfigStore.updateConfiguration(mWifiInfo); 4072 } 4073 4074 /** 4075 * Determine if we need to switch network: 4076 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4077 * - match the uregncy of the switch versus the packet usage at the interface 4078 */ 4079 boolean shouldSwitchNetwork(int networkDelta) { 4080 int delta; 4081 if (networkDelta <= 0) { 4082 return false; 4083 } 4084 delta = networkDelta; 4085 if (mWifiInfo != null) { 4086 if (!getEnableAutoJoinWhenAssociated() 4087 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4088 // If AutoJoin while associated is not enabled, 4089 // we should never switch network when already associated 4090 delta = -1000; 4091 } else { 4092 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4093 // TODO: at the interface. We should also discriminate between ucast and mcast, 4094 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4095 // TODO: broadcasts 4096 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4097 delta -= 999; 4098 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4099 delta -= 6; 4100 } 4101 logd("shouldSwitchNetwork " 4102 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4103 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4104 + " delta " + networkDelta + " -> " + delta); 4105 } 4106 } else { 4107 logd("shouldSwitchNetwork " 4108 + " delta " + networkDelta + " -> " + delta); 4109 } 4110 if (delta > 0) { 4111 return true; 4112 } 4113 return false; 4114 } 4115 4116 // Polling has completed, hence we wont have a score anymore 4117 private void cleanWifiScore() { 4118 mWifiInfo.txBadRate = 0; 4119 mWifiInfo.txSuccessRate = 0; 4120 mWifiInfo.txRetriesRate = 0; 4121 mWifiInfo.rxSuccessRate = 0; 4122 } 4123 4124 int mBadLinkspeedcount = 0; 4125 4126 // For debug, provide information about the last scoring operation 4127 String wifiScoringReport = null; 4128 4129 private void calculateWifiScore(WifiLinkLayerStats stats) { 4130 StringBuilder sb = new StringBuilder(); 4131 4132 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4133 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4134 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4135 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4136 < mWifiConfigStore.badLinkSpeed5); 4137 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4138 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4139 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4140 >= mWifiConfigStore.goodLinkSpeed5); 4141 4142 if (isBadLinkspeed) { 4143 if (mBadLinkspeedcount < 6) 4144 mBadLinkspeedcount++; 4145 } else { 4146 if (mBadLinkspeedcount > 0) 4147 mBadLinkspeedcount--; 4148 } 4149 4150 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4151 if (isGoodLinkspeed) sb.append(" gl"); 4152 4153 /** 4154 * We want to make sure that we use the 24GHz RSSI thresholds if 4155 * there are 2.4GHz scan results 4156 * otherwise we end up lowering the score based on 5GHz values 4157 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4158 * We also might unblacklist the configuation based on 2.4GHz 4159 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4160 */ 4161 boolean use24Thresholds = false; 4162 boolean homeNetworkBoost = false; 4163 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4164 ScanDetailCache scanDetailCache = 4165 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4166 if (currentConfiguration != null && scanDetailCache != null) { 4167 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4168 if (currentConfiguration.visibility != null) { 4169 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4170 && currentConfiguration.visibility.rssi24 4171 >= (currentConfiguration.visibility.rssi5 - 2)) { 4172 use24Thresholds = true; 4173 } 4174 } 4175 if (scanDetailCache.size() <= 6 4176 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4177 && currentConfiguration.allowedKeyManagement. 4178 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4179 // A PSK network with less than 6 known BSSIDs 4180 // This is most likely a home network and thus we want to stick to wifi more 4181 homeNetworkBoost = true; 4182 } 4183 } 4184 if (homeNetworkBoost) sb.append(" hn"); 4185 if (use24Thresholds) sb.append(" u24"); 4186 4187 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4188 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4189 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4190 4191 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4192 4193 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 4194 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 4195 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 4196 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdMinimumRssi5.get()); 4197 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 4198 || (!is24GHz && mWifiInfo.getRssi() 4199 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 4200 4201 if (isBadRSSI) sb.append(" br"); 4202 if (isLowRSSI) sb.append(" lr"); 4203 if (isHighRSSI) sb.append(" hr"); 4204 4205 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4206 if (currentConfiguration != null && 4207 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4208 if (isBadRSSI) { 4209 currentConfiguration.numTicksAtBadRSSI++; 4210 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4211 // We remained associated for a compound amount of time while passing 4212 // traffic, hence loose the corresponding user triggered disabled stats 4213 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4214 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4215 } 4216 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4217 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4218 } 4219 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4220 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4221 } 4222 currentConfiguration.numTicksAtBadRSSI = 0; 4223 } 4224 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4225 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4226 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4227 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4228 score = score - 5; 4229 penalizedDueToUserTriggeredDisconnect = 1; 4230 sb.append(" p1"); 4231 } 4232 } else if (isLowRSSI) { 4233 currentConfiguration.numTicksAtLowRSSI++; 4234 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4235 // We remained associated for a compound amount of time while passing 4236 // traffic, hence loose the corresponding user triggered disabled stats 4237 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4238 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4239 } 4240 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4241 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4242 } 4243 currentConfiguration.numTicksAtLowRSSI = 0; 4244 } 4245 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4246 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4247 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4248 score = score - 5; 4249 penalizedDueToUserTriggeredDisconnect = 2; 4250 sb.append(" p2"); 4251 } 4252 } else if (!isHighRSSI) { 4253 currentConfiguration.numTicksAtNotHighRSSI++; 4254 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4255 // We remained associated for a compound amount of time while passing 4256 // traffic, hence loose the corresponding user triggered disabled stats 4257 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4258 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4259 } 4260 currentConfiguration.numTicksAtNotHighRSSI = 0; 4261 } 4262 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4263 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4264 score = score - 5; 4265 penalizedDueToUserTriggeredDisconnect = 3; 4266 sb.append(" p3"); 4267 } 4268 } 4269 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4270 currentConfiguration.numTicksAtLowRSSI, 4271 currentConfiguration.numTicksAtNotHighRSSI)); 4272 } 4273 4274 if (PDBG) { 4275 String rssiStatus = ""; 4276 if (isBadRSSI) rssiStatus += " badRSSI "; 4277 else if (isHighRSSI) rssiStatus += " highRSSI "; 4278 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4279 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4280 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4281 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4282 + " score=" + Integer.toString(mWifiInfo.score) 4283 + rssiStatus 4284 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4285 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4286 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4287 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4288 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4289 } 4290 4291 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4292 && (isBadRSSI || isLowRSSI)) { 4293 // Link is stuck 4294 if (mWifiInfo.linkStuckCount < 5) 4295 mWifiInfo.linkStuckCount += 1; 4296 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4297 if (PDBG) logd(" bad link -> stuck count =" 4298 + Integer.toString(mWifiInfo.linkStuckCount)); 4299 } else if (mWifiInfo.txBadRate < 0.3) { 4300 if (mWifiInfo.linkStuckCount > 0) 4301 mWifiInfo.linkStuckCount -= 1; 4302 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4303 if (PDBG) logd(" good link -> stuck count =" 4304 + Integer.toString(mWifiInfo.linkStuckCount)); 4305 } 4306 4307 sb.append(String.format(" [%d", score)); 4308 4309 if (mWifiInfo.linkStuckCount > 1) { 4310 // Once link gets stuck for more than 3 seconds, start reducing the score 4311 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4312 } 4313 sb.append(String.format(",%d", score)); 4314 4315 if (isBadLinkspeed) { 4316 score -= 4; 4317 if (PDBG) { 4318 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4319 + " score=" + Integer.toString(score)); 4320 } 4321 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4322 score += 4; // So as bad rssi alone dont kill us 4323 } 4324 sb.append(String.format(",%d", score)); 4325 4326 if (isBadRSSI) { 4327 if (mWifiInfo.badRssiCount < 7) 4328 mWifiInfo.badRssiCount += 1; 4329 } else if (isLowRSSI) { 4330 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4331 if (mWifiInfo.badRssiCount > 0) { 4332 // Decrement bad Rssi count 4333 mWifiInfo.badRssiCount -= 1; 4334 } 4335 } else { 4336 mWifiInfo.badRssiCount = 0; 4337 mWifiInfo.lowRssiCount = 0; 4338 } 4339 4340 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4341 sb.append(String.format(",%d", score)); 4342 4343 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4344 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4345 + " --> score " + Integer.toString(score)); 4346 4347 4348 if (isHighRSSI) { 4349 score += 5; 4350 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4351 } 4352 sb.append(String.format(",%d]", score)); 4353 4354 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4355 4356 //sanitize boundaries 4357 if (score > NetworkAgent.WIFI_BASE_SCORE) 4358 score = NetworkAgent.WIFI_BASE_SCORE; 4359 if (score < 0) 4360 score = 0; 4361 4362 //report score 4363 if (score != mWifiInfo.score) { 4364 if (DBG) { 4365 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4366 } 4367 mWifiInfo.score = score; 4368 if (mNetworkAgent != null) { 4369 mNetworkAgent.sendNetworkScore(score); 4370 } 4371 } 4372 wifiScoringReport = sb.toString(); 4373 } 4374 4375 public double getTxPacketRate() { 4376 if (mWifiInfo != null) { 4377 return mWifiInfo.txSuccessRate; 4378 } 4379 return -1; 4380 } 4381 4382 public double getRxPacketRate() { 4383 if (mWifiInfo != null) { 4384 return mWifiInfo.rxSuccessRate; 4385 } 4386 return -1; 4387 } 4388 4389 /** 4390 * Fetch TX packet counters on current connection 4391 */ 4392 private void fetchPktcntNative(RssiPacketCountInfo info) { 4393 String pktcntPoll = mWifiNative.pktcntPoll(); 4394 4395 if (pktcntPoll != null) { 4396 String[] lines = pktcntPoll.split("\n"); 4397 for (String line : lines) { 4398 String[] prop = line.split("="); 4399 if (prop.length < 2) continue; 4400 try { 4401 if (prop[0].equals("TXGOOD")) { 4402 info.txgood = Integer.parseInt(prop[1]); 4403 } else if (prop[0].equals("TXBAD")) { 4404 info.txbad = Integer.parseInt(prop[1]); 4405 } 4406 } catch (NumberFormatException e) { 4407 // Ignore 4408 } 4409 } 4410 } 4411 } 4412 4413 private boolean clearIPv4Address(String iface) { 4414 try { 4415 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4416 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4417 mNwService.setInterfaceConfig(iface, ifcg); 4418 return true; 4419 } catch (RemoteException e) { 4420 return false; 4421 } 4422 } 4423 4424 private boolean isProvisioned(LinkProperties lp) { 4425 return lp.isProvisioned() || 4426 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4427 } 4428 4429 private void updateLinkProperties(int reason) { 4430 // TODO: Investigate using the LinkProperties object passed in from 4431 // the various IpManager callbacks. 4432 LinkProperties newLp = mIpManager.getLinkProperties(); 4433 4434 // HTTP proxy and TCP buffer sizes are locally configured. 4435 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4436 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4437 newLp.setTcpBufferSizes(mTcpBufferSizes); 4438 } 4439 4440 final boolean linkChanged = !newLp.equals(mLinkProperties); 4441 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4442 final boolean isProvisioned = isProvisioned(newLp); 4443 // TODO: Teach LinkProperties how to understand static assignment 4444 // and simplify all this provisioning change detection logic by 4445 // unifying it under LinkProperties.compareProvisioning(). 4446 final boolean lostProvisioning = 4447 (wasProvisioned && !isProvisioned) || 4448 (mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address()) || 4449 (mLinkProperties.isIPv6Provisioned() && !newLp.isIPv6Provisioned()); 4450 final DetailedState detailedState = getNetworkDetailedState(); 4451 4452 if (lostProvisioning) { 4453 log("Lost IP layer provisioning!" + 4454 " was: " + mLinkProperties + 4455 " now: " + newLp); 4456 } 4457 4458 if (linkChanged) { 4459 if (DBG) { 4460 log("Link configuration changed for netId: " + mLastNetworkId 4461 + " old: " + mLinkProperties + " new: " + newLp); 4462 } 4463 mLinkProperties = newLp; 4464 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4465 } 4466 4467 if (DBG) { 4468 StringBuilder sb = new StringBuilder(); 4469 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4470 sb.append(" state: " + detailedState); 4471 sb.append(" reason: " + smToString(reason)); 4472 4473 if (mLinkProperties != null) { 4474 sb.append(" "); 4475 sb.append(getLinkPropertiesSummary(mLinkProperties)); 4476 if (isProvisioned) { 4477 sb.append(" isprov"); 4478 } 4479 } 4480 logd(sb.toString()); 4481 } 4482 4483 // If we just configured or lost IP configuration, do the needful. 4484 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4485 // here because those should only be called if we're attempting to connect or already 4486 // connected, whereas updateLinkProperties can be called at any time. 4487 switch (reason) { 4488 case DhcpStateMachine.DHCP_SUCCESS: 4489 case CMD_STATIC_IP_SUCCESS: 4490 // IPv4 provisioning succeded. Advance to connected state. 4491 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4492 if (!isProvisioned) { 4493 // Can never happen unless DHCP reports success but isProvisioned thinks the 4494 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4495 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4496 // TODO: disconnect here instead. If our configuration is not usable, there's no 4497 // point in staying connected, and if mLinkProperties is out of sync with 4498 // reality, that will cause problems in the future. 4499 logd("IPv4 config succeeded, but not provisioned"); 4500 } 4501 break; 4502 4503 case DhcpStateMachine.DHCP_FAILURE: 4504 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4505 // give up and disconnect. 4506 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4507 if (!isProvisioned || lostProvisioning) { 4508 sendMessage(CMD_IP_CONFIGURATION_LOST); 4509 } else { 4510 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4511 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4512 4513 // To be sure we don't get stuck with a non-working network if all we had is 4514 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4515 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4516 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4517 // necessary for provisioning, its deletion will cause us to disconnect. 4518 // 4519 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4520 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4521 // not return true if we're using DHCP and don't have an IPv4 default route. So 4522 // for now it's only here for extra redundancy. However, it will increase 4523 // robustness if we move to getting IPv4 routes from netlink as well. 4524 loge("DHCP failure: provisioned, clearing IPv4 address."); 4525 if (!clearIPv4Address(mInterfaceName)) { 4526 sendMessage(CMD_IP_CONFIGURATION_LOST); 4527 } 4528 } 4529 break; 4530 4531 case CMD_STATIC_IP_FAILURE: 4532 // Static configuration was invalid, or an error occurred in applying it. Give up. 4533 sendMessage(CMD_IP_CONFIGURATION_LOST); 4534 break; 4535 4536 case CMD_UPDATE_LINKPROPERTIES: 4537 // IP addresses, DNS servers, etc. changed. Act accordingly. 4538 if (lostProvisioning) { 4539 // We no longer have a usable network configuration. Disconnect. 4540 sendMessage(CMD_IP_CONFIGURATION_LOST); 4541 } else if (!wasProvisioned && isProvisioned) { 4542 // We have a usable IPv6-only config. Advance to connected state. 4543 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4544 } 4545 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4546 // If anything has changed and we're already connected, send out a notification. 4547 sendLinkConfigurationChangedBroadcast(); 4548 } 4549 break; 4550 } 4551 } 4552 4553 /** 4554 * Clears all our link properties. 4555 */ 4556 private void clearLinkProperties() { 4557 // Clear the link properties obtained from DHCP. The only caller of this 4558 // function has already called IpManager#stop(), which clears its state. 4559 synchronized (mDhcpResultsLock) { 4560 if (mDhcpResults != null) { 4561 mDhcpResults.clear(); 4562 } 4563 } 4564 4565 // Now clear the merged link properties. 4566 mLinkProperties.clear(); 4567 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4568 } 4569 4570 /** 4571 * try to update default route MAC address. 4572 */ 4573 private String updateDefaultRouteMacAddress(int timeout) { 4574 String address = null; 4575 for (RouteInfo route : mLinkProperties.getRoutes()) { 4576 if (route.isDefaultRoute() && route.hasGateway()) { 4577 InetAddress gateway = route.getGateway(); 4578 if (gateway instanceof Inet4Address) { 4579 if (PDBG) { 4580 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4581 + gateway.getHostAddress()); 4582 } 4583 address = macAddressFromRoute(gateway.getHostAddress()); 4584 /* The gateway's MAC address is known */ 4585 if ((address == null) && (timeout > 0)) { 4586 boolean reachable = false; 4587 try { 4588 reachable = gateway.isReachable(timeout); 4589 } catch (Exception e) { 4590 loge("updateDefaultRouteMacAddress exception reaching :" 4591 + gateway.getHostAddress()); 4592 4593 } finally { 4594 if (reachable == true) { 4595 4596 address = macAddressFromRoute(gateway.getHostAddress()); 4597 if (PDBG) { 4598 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4599 + gateway.getHostAddress() + " found " + address); 4600 } 4601 } 4602 } 4603 } 4604 if (address != null) { 4605 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4606 } 4607 } 4608 } 4609 } 4610 return address; 4611 } 4612 4613 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4614 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4615 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4616 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4617 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4618 } 4619 4620 private void sendRssiChangeBroadcast(final int newRssi) { 4621 try { 4622 mBatteryStats.noteWifiRssiChanged(newRssi); 4623 } catch (RemoteException e) { 4624 // Won't happen. 4625 } 4626 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4627 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4628 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4629 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4630 } 4631 4632 private void sendNetworkStateChangeBroadcast(String bssid) { 4633 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4634 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4635 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4636 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4637 if (bssid != null) 4638 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4639 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4640 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4641 // We no longer report MAC address to third-parties and our code does 4642 // not rely on this broadcast, so just send the default MAC address. 4643 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4644 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4645 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4646 } 4647 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4648 } 4649 4650 private WifiInfo getWiFiInfoForUid(int uid) { 4651 if (Binder.getCallingUid() == Process.myUid()) { 4652 return mWifiInfo; 4653 } 4654 4655 WifiInfo result = new WifiInfo(mWifiInfo); 4656 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4657 4658 IBinder binder = mFacade.getService("package"); 4659 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4660 4661 try { 4662 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4663 uid) == PackageManager.PERMISSION_GRANTED) { 4664 result.setMacAddress(mWifiInfo.getMacAddress()); 4665 } 4666 } catch (RemoteException e) { 4667 Log.e(TAG, "Error checking receiver permission", e); 4668 } 4669 4670 return result; 4671 } 4672 4673 private void sendLinkConfigurationChangedBroadcast() { 4674 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4675 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4676 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4677 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4678 } 4679 4680 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4681 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4682 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4683 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4684 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4685 } 4686 4687 /** 4688 * Record the detailed state of a network. 4689 * 4690 * @param state the new {@code DetailedState} 4691 */ 4692 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4693 boolean hidden = false; 4694 4695 if (linkDebouncing || isRoaming()) { 4696 // There is generally a confusion in the system about colluding 4697 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4698 // which leads to multiple confusion. 4699 // 4700 // If link is de-bouncing or roaming, we already have an IP address 4701 // as well we were connected and are doing L2 cycles of 4702 // reconnecting or renewing IP address to check that we still have it 4703 // This L2 link flapping should ne be reflected into the Network state 4704 // which is the state of the WiFi Network visible to Layer 3 and applications 4705 // Note that once debouncing and roaming are completed, we will 4706 // set the Network state to where it should be, or leave it as unchanged 4707 // 4708 hidden = true; 4709 } 4710 if (DBG) { 4711 log("setDetailed state, old =" 4712 + mNetworkInfo.getDetailedState() + " and new state=" + state 4713 + " hidden=" + hidden); 4714 } 4715 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null 4716 && !mWifiInfo.getSSID().equals(WifiSsid.NONE)) { 4717 // Always indicate that SSID has changed 4718 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4719 if (DBG) { 4720 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4721 } 4722 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4723 sendNetworkStateChangeBroadcast(null); 4724 } 4725 } 4726 if (hidden == true) { 4727 return false; 4728 } 4729 4730 if (state != mNetworkInfo.getDetailedState()) { 4731 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4732 if (mNetworkAgent != null) { 4733 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4734 } 4735 sendNetworkStateChangeBroadcast(null); 4736 return true; 4737 } 4738 return false; 4739 } 4740 4741 private DetailedState getNetworkDetailedState() { 4742 return mNetworkInfo.getDetailedState(); 4743 } 4744 4745 private SupplicantState handleSupplicantStateChange(Message message) { 4746 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4747 SupplicantState state = stateChangeResult.state; 4748 // Supplicant state change 4749 // [31-13] Reserved for future use 4750 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4751 // 50023 supplicant_state_changed (custom|1|5) 4752 mWifiInfo.setSupplicantState(state); 4753 // Network id is only valid when we start connecting 4754 if (SupplicantState.isConnecting(state)) { 4755 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4756 } else { 4757 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4758 } 4759 4760 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4761 4762 if (mWhiteListedSsids != null 4763 && mWhiteListedSsids.length > 0 4764 && stateChangeResult.wifiSsid != null) { 4765 String SSID = stateChangeResult.wifiSsid.toString(); 4766 String currentSSID = mWifiInfo.getSSID(); 4767 if (SSID != null && currentSSID != null && !SSID.equals(WifiSsid.NONE)) { 4768 // Remove quote before comparing 4769 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4770 && SSID.charAt(SSID.length() - 1) == '"') { 4771 SSID = SSID.substring(1, SSID.length() - 1); 4772 } 4773 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4774 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4775 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4776 } 4777 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4778 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4779 //Create new connection event for connection attempt. 4780 mWifiMetrics.startConnectionEvent(mWifiInfo, 4781 WifiMetricsProto.ConnectionEvent.ROAM_ENTERPRISE); 4782 targetWificonfiguration = 4783 mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4784 transitionTo(mRoamingState); 4785 } 4786 } 4787 } 4788 4789 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4790 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4791 4792 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4793 4794 return state; 4795 } 4796 4797 /** 4798 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4799 * using the interface, stopping DHCP & disabling interface 4800 */ 4801 private void handleNetworkDisconnect() { 4802 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4803 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4804 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4805 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4806 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4807 4808 stopRssiMonitoringOffload(); 4809 4810 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4811 4812 stopDhcp(); 4813 4814 mIpManager.stop(); 4815 4816 /* Reset data structures */ 4817 mBadLinkspeedcount = 0; 4818 mWifiInfo.reset(); 4819 linkDebouncing = false; 4820 /* Reset roaming parameters */ 4821 mAutoRoaming = false; 4822 4823 /** 4824 * fullBandConnectedTimeIntervalMilli: 4825 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4826 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4827 * Initialize to sane value = 20 seconds 4828 */ 4829 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4830 4831 setNetworkDetailedState(DetailedState.DISCONNECTED); 4832 if (mNetworkAgent != null) { 4833 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4834 mNetworkAgent = null; 4835 } 4836 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4837 4838 /* Clear network properties */ 4839 clearLinkProperties(); 4840 4841 /* Cend event to CM & network change broadcast */ 4842 sendNetworkStateChangeBroadcast(mLastBssid); 4843 4844 /* Cancel auto roam requests */ 4845 autoRoamSetBSSID(mLastNetworkId, "any"); 4846 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4847 mLastBssid = null; 4848 registerDisconnected(); 4849 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4850 } 4851 4852 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4853 /* Socket connection can be lost when we do a graceful shutdown 4854 * or when the driver is hung. Ensure supplicant is stopped here. 4855 */ 4856 if (killSupplicant) { 4857 mWifiMonitor.killSupplicant(mP2pSupported); 4858 } 4859 mWifiNative.closeSupplicantConnection(); 4860 sendSupplicantConnectionChangedBroadcast(false); 4861 setWifiState(WIFI_STATE_DISABLED); 4862 } 4863 4864 void handlePreDhcpSetup() { 4865 if (!mBluetoothConnectionActive) { 4866 /* 4867 * There are problems setting the Wi-Fi driver's power 4868 * mode to active when bluetooth coexistence mode is 4869 * enabled or sense. 4870 * <p> 4871 * We set Wi-Fi to active mode when 4872 * obtaining an IP address because we've found 4873 * compatibility issues with some routers with low power 4874 * mode. 4875 * <p> 4876 * In order for this active power mode to properly be set, 4877 * we disable coexistence mode until we're done with 4878 * obtaining an IP address. One exception is if we 4879 * are currently connected to a headset, since disabling 4880 * coexistence would interrupt that connection. 4881 */ 4882 // Disable the coexistence mode 4883 mWifiNative.setBluetoothCoexistenceMode( 4884 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4885 } 4886 4887 // Disable power save and suspend optimizations during DHCP 4888 // Note: The order here is important for now. Brcm driver changes 4889 // power settings when we control suspend mode optimizations. 4890 // TODO: Remove this comment when the driver is fixed. 4891 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4892 mWifiNative.setPowerSave(false); 4893 4894 // Update link layer stats 4895 getWifiLinkLayerStats(false); 4896 4897 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4898 Message msg = new Message(); 4899 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4900 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4901 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4902 msg.obj = mDhcpStateMachine; 4903 mWifiP2pChannel.sendMessage(msg); 4904 } 4905 4906 4907 private void maybeInitDhcpStateMachine() { 4908 if (mDhcpStateMachine == null) { 4909 mDhcpStateMachine = mFacade.makeDhcpStateMachine( 4910 mContext, WifiStateMachine.this, mInterfaceName); 4911 } 4912 } 4913 4914 void startDhcp() { 4915 maybeInitDhcpStateMachine(); 4916 mDhcpStateMachine.registerForPreDhcpNotification(); 4917 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4918 } 4919 4920 void renewDhcp() { 4921 maybeInitDhcpStateMachine(); 4922 mDhcpStateMachine.registerForPreDhcpNotification(); 4923 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4924 } 4925 4926 void stopDhcp() { 4927 if (mDhcpStateMachine != null) { 4928 /* In case we were in middle of DHCP operation restore back powermode */ 4929 handlePostDhcpSetup(); 4930 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4931 } 4932 } 4933 4934 void handlePostDhcpSetup() { 4935 /* Restore power save and suspend optimizations */ 4936 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4937 mWifiNative.setPowerSave(true); 4938 4939 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, 4940 WifiP2pServiceImpl.DISABLED); 4941 4942 // Set the coexistence mode back to its default value 4943 mWifiNative.setBluetoothCoexistenceMode( 4944 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4945 } 4946 4947 void connectScanningService() { 4948 4949 if (mWifiScanner == null) { 4950 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4951 } 4952 } 4953 4954 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4955 if (PDBG) { 4956 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 4957 logd("link address " + dhcpResults.ipAddress); 4958 } 4959 4960 Inet4Address addr; 4961 synchronized (mDhcpResultsLock) { 4962 mDhcpResults = dhcpResults; 4963 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4964 } 4965 4966 if (isRoaming()) { 4967 int previousAddress = mWifiInfo.getIpAddress(); 4968 int newAddress = NetworkUtils.inetAddressToInt(addr); 4969 if (previousAddress != newAddress) { 4970 logd("handleIPv4Success, roaming and address changed" + 4971 mWifiInfo + " got: " + addr); 4972 } 4973 } 4974 mWifiInfo.setInetAddress(addr); 4975 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4976 updateLinkProperties(reason); 4977 } 4978 4979 private void handleSuccessfulIpConfiguration() { 4980 mLastSignalLevel = -1; // Force update of signal strength 4981 WifiConfiguration c = getCurrentWifiConfiguration(); 4982 if (c != null) { 4983 // Reset IP failure tracking 4984 c.getNetworkSelectionStatus().clearDisableReasonCounter( 4985 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 4986 4987 // Tell the framework whether the newly connected network is trusted or untrusted. 4988 updateCapabilities(c); 4989 } 4990 if (c != null) { 4991 ScanResult result = getCurrentScanResult(); 4992 if (result == null) { 4993 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4994 c.configKey()); 4995 } else { 4996 // Clear the per BSSID failure count 4997 result.numIpConfigFailures = 0; 4998 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4999 // any BSSID, even though it may already have a non zero ip failure count, 5000 // this will typically happen if the user walks away and come back to his arrea 5001 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5002 // in supplicant for a couple of hours or a day 5003 mWifiConfigStore.clearBssidBlacklist(); 5004 } 5005 } 5006 } 5007 5008 private void handleIPv4Failure(int reason) { 5009 synchronized(mDhcpResultsLock) { 5010 if (mDhcpResults != null) { 5011 mDhcpResults.clear(); 5012 } 5013 } 5014 if (PDBG) { 5015 logd("handleIPv4Failure"); 5016 } 5017 updateLinkProperties(reason); 5018 } 5019 5020 private void handleIpConfigurationLost() { 5021 mWifiInfo.setInetAddress(null); 5022 mWifiInfo.setMeteredHint(false); 5023 5024 mWifiConfigStore.updateNetworkSelectionStatus(mLastNetworkId, 5025 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 5026 5027 /* DHCP times out after about 30 seconds, we do a 5028 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5029 */ 5030 mWifiNative.disconnect(); 5031 } 5032 5033 // TODO: De-duplicated this and handleIpConfigurationLost(). 5034 private void handleIpReachabilityLost() { 5035 mWifiInfo.setInetAddress(null); 5036 mWifiInfo.setMeteredHint(false); 5037 5038 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5039 5040 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5041 mWifiNative.disconnect(); 5042 } 5043 5044 private int convertFrequencyToChannelNumber(int frequency) { 5045 if (frequency >= 2412 && frequency <= 2484) { 5046 return (frequency -2412) / 5 + 1; 5047 } else if (frequency >= 5170 && frequency <=5825) { 5048 //DFS is included 5049 return (frequency -5170) / 5 + 34; 5050 } else { 5051 return 0; 5052 } 5053 } 5054 5055 private int chooseApChannel(int apBand) { 5056 int apChannel; 5057 int[] channel; 5058 5059 if (apBand == 0) { 5060 if (mWifiApConfigStore.allowed2GChannel == null || 5061 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5062 //most safe channel to use 5063 if(DBG) { 5064 Log.d(TAG, "No specified 2G allowed channel list"); 5065 } 5066 apChannel = 6; 5067 } else { 5068 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5069 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5070 } 5071 } else { 5072 //5G without DFS 5073 channel = mWifiNative.getChannelsForBand(2); 5074 if (channel != null && channel.length > 0) { 5075 apChannel = channel[mRandom.nextInt(channel.length)]; 5076 apChannel = convertFrequencyToChannelNumber(apChannel); 5077 } else { 5078 Log.e(TAG, "SoftAp do not get available channel list"); 5079 apChannel = 0; 5080 } 5081 } 5082 5083 if(DBG) { 5084 Log.d(TAG, "SoftAp set on channel " + apChannel); 5085 } 5086 5087 return apChannel; 5088 } 5089 5090 /* SoftAP configuration */ 5091 private boolean enableSoftAp() { 5092 if (mWifiNative.getInterfaces() != 0) { 5093 if (!mWifiNative.toggleInterface(0)) { 5094 if (DBG) Log.e(TAG, "toggleInterface failed"); 5095 return false; 5096 } 5097 } else { 5098 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5099 } 5100 5101 try { 5102 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5103 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5104 } catch (Exception e) { 5105 Log.e(TAG, "Failed to reload AP firmware " + e); 5106 } 5107 5108 if (mWifiNative.startHal() == false) { 5109 /* starting HAL is optional */ 5110 Log.e(TAG, "Failed to start HAL"); 5111 } 5112 return true; 5113 } 5114 5115 /* Current design is to not set the config on a running hostapd but instead 5116 * stop and start tethering when user changes config on a running access point 5117 * 5118 * TODO: Add control channel setup through hostapd that allows changing config 5119 * on a running daemon 5120 */ 5121 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5122 // set channel 5123 final WifiConfiguration config = new WifiConfiguration(configuration); 5124 5125 if (DBG) { 5126 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5127 } 5128 5129 //We need HAL support to set country code and get available channel list, if HAL is 5130 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5131 if (mWifiNative.isHalStarted()) { 5132 //set country code through HAL Here 5133 String countryCode = getCurrentCountryCode(); 5134 5135 if (countryCode != null) { 5136 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5137 if (config.apBand != 0) { 5138 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5139 //countrycode is mandatory for 5GHz 5140 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5141 return; 5142 } 5143 } 5144 } else { 5145 if (config.apBand != 0) { 5146 //countrycode is mandatory for 5GHz 5147 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5148 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5149 return; 5150 } 5151 } 5152 5153 if (config.apChannel == 0) { 5154 config.apChannel = chooseApChannel(config.apBand); 5155 if (config.apChannel == 0) { 5156 if(mWifiNative.isGetChannelsForBandSupported()) { 5157 //fail to get available channel 5158 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5159 return; 5160 } else { 5161 //for some old device, wifiHal may not be supportedget valid channels are not 5162 //supported 5163 config.apBand = 0; 5164 config.apChannel = 6; 5165 } 5166 } 5167 } 5168 } else { 5169 //for some old device, wifiHal may not be supported 5170 config.apBand = 0; 5171 config.apChannel = 6; 5172 } 5173 // Start hostapd on a separate thread 5174 new Thread(new Runnable() { 5175 public void run() { 5176 try { 5177 mNwService.startAccessPoint(config, mInterfaceName); 5178 } catch (Exception e) { 5179 loge("Exception in softap start " + e); 5180 try { 5181 mNwService.stopAccessPoint(mInterfaceName); 5182 mNwService.startAccessPoint(config, mInterfaceName); 5183 } catch (Exception e1) { 5184 loge("Exception in softap re-start " + e1); 5185 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5186 return; 5187 } 5188 } 5189 if (DBG) log("Soft AP start successful"); 5190 sendMessage(CMD_START_AP_SUCCESS); 5191 } 5192 }).start(); 5193 } 5194 5195 private byte[] macAddressFromString(String macString) { 5196 String[] macBytes = macString.split(":"); 5197 if (macBytes.length != 6) { 5198 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5199 } 5200 byte[] mac = new byte[6]; 5201 for (int i = 0; i < macBytes.length; i++) { 5202 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5203 mac[i] = hexVal.byteValue(); 5204 } 5205 return mac; 5206 } 5207 5208 /* 5209 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5210 * so as to record MAC address of default gateway. 5211 **/ 5212 private String macAddressFromRoute(String ipAddress) { 5213 String macAddress = null; 5214 BufferedReader reader = null; 5215 try { 5216 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5217 5218 // Skip over the line bearing colum titles 5219 String line = reader.readLine(); 5220 5221 while ((line = reader.readLine()) != null) { 5222 String[] tokens = line.split("[ ]+"); 5223 if (tokens.length < 6) { 5224 continue; 5225 } 5226 5227 // ARP column format is 5228 // Address HWType HWAddress Flags Mask IFace 5229 String ip = tokens[0]; 5230 String mac = tokens[3]; 5231 5232 if (ipAddress.equals(ip)) { 5233 macAddress = mac; 5234 break; 5235 } 5236 } 5237 5238 if (macAddress == null) { 5239 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5240 "/proc/net/arp"); 5241 } 5242 5243 } catch (FileNotFoundException e) { 5244 loge("Could not open /proc/net/arp to lookup mac address"); 5245 } catch (IOException e) { 5246 loge("Could not read /proc/net/arp to lookup mac address"); 5247 } finally { 5248 try { 5249 if (reader != null) { 5250 reader.close(); 5251 } 5252 } catch (IOException e) { 5253 // Do nothing 5254 } 5255 } 5256 return macAddress; 5257 5258 } 5259 5260 private class WifiNetworkFactory extends NetworkFactory { 5261 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5262 super(l, c, TAG, f); 5263 } 5264 5265 @Override 5266 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5267 ++mConnectionRequests; 5268 } 5269 5270 @Override 5271 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5272 --mConnectionRequests; 5273 } 5274 5275 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5276 pw.println("mConnectionRequests " + mConnectionRequests); 5277 } 5278 5279 } 5280 5281 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5282 private int mUntrustedReqCount; 5283 5284 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5285 super(l, c, tag, f); 5286 } 5287 5288 @Override 5289 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5290 if (!networkRequest.networkCapabilities.hasCapability( 5291 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5292 if (++mUntrustedReqCount == 1) { 5293 mWifiQualifiedNetworkSelector.setAllowUntrustedConnections(true); 5294 } 5295 } 5296 } 5297 5298 @Override 5299 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5300 if (!networkRequest.networkCapabilities.hasCapability( 5301 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5302 if (--mUntrustedReqCount == 0) { 5303 mWifiQualifiedNetworkSelector.setAllowUntrustedConnections(false); 5304 } 5305 } 5306 } 5307 5308 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5309 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5310 } 5311 } 5312 5313 void maybeRegisterNetworkFactory() { 5314 if (mNetworkFactory == null) { 5315 checkAndSetConnectivityInstance(); 5316 if (mCm != null) { 5317 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5318 NETWORKTYPE, mNetworkCapabilitiesFilter); 5319 mNetworkFactory.setScoreFilter(60); 5320 mNetworkFactory.register(); 5321 5322 // We can't filter untrusted network in the capabilities filter because a trusted 5323 // network would still satisfy a request that accepts untrusted ones. 5324 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5325 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5326 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5327 mUntrustedNetworkFactory.register(); 5328 } 5329 } 5330 } 5331 5332 /******************************************************** 5333 * HSM states 5334 *******************************************************/ 5335 5336 class DefaultState extends State { 5337 @Override 5338 public boolean processMessage(Message message) { 5339 logStateAndMessage(message, this); 5340 5341 switch (message.what) { 5342 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5343 AsyncChannel ac = (AsyncChannel) message.obj; 5344 if (ac == mWifiP2pChannel) { 5345 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5346 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5347 } else { 5348 loge("WifiP2pService connection failure, error=" + message.arg1); 5349 } 5350 } else { 5351 loge("got HALF_CONNECTED for unknown channel"); 5352 } 5353 break; 5354 } 5355 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5356 AsyncChannel ac = (AsyncChannel) message.obj; 5357 if (ac == mWifiP2pChannel) { 5358 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5359 //TODO: Re-establish connection to state machine after a delay 5360 // mWifiP2pChannel.connect(mContext, getHandler(), 5361 // mWifiP2pManager.getMessenger()); 5362 } 5363 break; 5364 } 5365 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5366 mBluetoothConnectionActive = (message.arg1 != 5367 BluetoothAdapter.STATE_DISCONNECTED); 5368 break; 5369 /* Synchronous call returns */ 5370 case CMD_PING_SUPPLICANT: 5371 case CMD_ENABLE_NETWORK: 5372 case CMD_ADD_OR_UPDATE_NETWORK: 5373 case CMD_REMOVE_NETWORK: 5374 case CMD_SAVE_CONFIG: 5375 replyToMessage(message, message.what, FAILURE); 5376 break; 5377 case CMD_GET_CAPABILITY_FREQ: 5378 replyToMessage(message, message.what, null); 5379 break; 5380 case CMD_GET_CONFIGURED_NETWORKS: 5381 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5382 break; 5383 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5384 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5385 break; 5386 case CMD_ENABLE_RSSI_POLL: 5387 mEnableRssiPolling = (message.arg1 == 1); 5388 break; 5389 case CMD_SET_HIGH_PERF_MODE: 5390 if (message.arg1 == 1) { 5391 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5392 } else { 5393 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5394 } 5395 break; 5396 case CMD_BOOT_COMPLETED: 5397 maybeRegisterNetworkFactory(); 5398 break; 5399 case CMD_SCREEN_STATE_CHANGED: 5400 handleScreenStateChanged(message.arg1 != 0); 5401 break; 5402 /* Discard */ 5403 case CMD_START_SCAN: 5404 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5405 break; 5406 case CMD_START_SUPPLICANT: 5407 case CMD_STOP_SUPPLICANT: 5408 case CMD_STOP_SUPPLICANT_FAILED: 5409 case CMD_START_DRIVER: 5410 case CMD_STOP_DRIVER: 5411 case CMD_DRIVER_START_TIMED_OUT: 5412 case CMD_START_AP: 5413 case CMD_START_AP_SUCCESS: 5414 case CMD_START_AP_FAILURE: 5415 case CMD_STOP_AP: 5416 case CMD_TETHER_STATE_CHANGE: 5417 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5418 case CMD_DISCONNECT: 5419 case CMD_RECONNECT: 5420 case CMD_REASSOCIATE: 5421 case CMD_RELOAD_TLS_AND_RECONNECT: 5422 case WifiMonitor.SUP_CONNECTION_EVENT: 5423 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5424 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5425 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5426 case WifiMonitor.SCAN_RESULTS_EVENT: 5427 case WifiMonitor.SCAN_FAILED_EVENT: 5428 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5429 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5430 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5431 case WifiMonitor.WPS_OVERLAP_EVENT: 5432 case CMD_BLACKLIST_NETWORK: 5433 case CMD_CLEAR_BLACKLIST: 5434 case CMD_SET_OPERATIONAL_MODE: 5435 case CMD_SET_FREQUENCY_BAND: 5436 case CMD_RSSI_POLL: 5437 case CMD_ENABLE_ALL_NETWORKS: 5438 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5439 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5440 /* Handled by WifiApConfigStore */ 5441 case CMD_SET_AP_CONFIG: 5442 case CMD_SET_AP_CONFIG_COMPLETED: 5443 case CMD_REQUEST_AP_CONFIG: 5444 case CMD_RESPONSE_AP_CONFIG: 5445 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5446 case CMD_DISABLE_P2P_RSP: 5447 case WifiMonitor.SUP_REQUEST_IDENTITY: 5448 case CMD_TEST_NETWORK_DISCONNECT: 5449 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5450 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5451 case CMD_TARGET_BSSID: 5452 case CMD_AUTO_CONNECT: 5453 case CMD_AUTO_ROAM: 5454 case CMD_AUTO_SAVE_NETWORK: 5455 case CMD_ASSOCIATED_BSSID: 5456 case CMD_UNWANTED_NETWORK: 5457 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5458 case CMD_ROAM_WATCHDOG_TIMER: 5459 case CMD_DISABLE_EPHEMERAL_NETWORK: 5460 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5461 case CMD_STARTED_PNO_DBG: 5462 case CMD_STARTED_GSCAN_DBG: 5463 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5464 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5465 break; 5466 case CMD_SET_COUNTRY_CODE: 5467 String country = (String) message.obj; 5468 final boolean persist = (message.arg2 == 1); 5469 final int sequence = message.arg1; 5470 if (sequence != mCountryCodeSequence.get()) { 5471 if (DBG) log("set country code ignored due to sequnce num"); 5472 break; 5473 } 5474 5475 if (persist) { 5476 country = country.toUpperCase(Locale.ROOT); 5477 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5478 Settings.Global.putString(mContext.getContentResolver(), 5479 Settings.Global.WIFI_COUNTRY_CODE, 5480 country == null ? "" : country); 5481 } 5482 5483 break; 5484 case DhcpStateMachine.CMD_ON_QUIT: 5485 mDhcpStateMachine = null; 5486 break; 5487 case CMD_SET_SUSPEND_OPT_ENABLED: 5488 if (message.arg1 == 1) { 5489 mSuspendWakeLock.release(); 5490 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5491 } else { 5492 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5493 } 5494 break; 5495 case WifiMonitor.DRIVER_HUNG_EVENT: 5496 setSupplicantRunning(false); 5497 setSupplicantRunning(true); 5498 break; 5499 case WifiManager.CONNECT_NETWORK: 5500 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5501 WifiManager.BUSY); 5502 break; 5503 case WifiManager.FORGET_NETWORK: 5504 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5505 WifiManager.BUSY); 5506 break; 5507 case WifiManager.SAVE_NETWORK: 5508 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5509 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5510 WifiManager.BUSY); 5511 break; 5512 case WifiManager.START_WPS: 5513 replyToMessage(message, WifiManager.WPS_FAILED, 5514 WifiManager.BUSY); 5515 break; 5516 case WifiManager.CANCEL_WPS: 5517 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5518 WifiManager.BUSY); 5519 break; 5520 case WifiManager.DISABLE_NETWORK: 5521 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5522 WifiManager.BUSY); 5523 break; 5524 case WifiManager.RSSI_PKTCNT_FETCH: 5525 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5526 WifiManager.BUSY); 5527 break; 5528 case CMD_GET_SUPPORTED_FEATURES: 5529 int featureSet = mWifiNative.getSupportedFeatureSet(); 5530 replyToMessage(message, message.what, featureSet); 5531 break; 5532 case CMD_FIRMWARE_ALERT: 5533 if (mWifiLogger != null) { 5534 byte[] buffer = (byte[])message.obj; 5535 mWifiLogger.captureAlertData(message.arg1, buffer); 5536 } 5537 break; 5538 case CMD_GET_LINK_LAYER_STATS: 5539 // Not supported hence reply with error message 5540 replyToMessage(message, message.what, null); 5541 break; 5542 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5543 NetworkInfo info = (NetworkInfo) message.obj; 5544 mP2pConnected.set(info.isConnected()); 5545 break; 5546 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5547 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5548 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5549 break; 5550 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5551 case CMD_UPDATE_LINKPROPERTIES: 5552 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5553 break; 5554 case CMD_GET_MATCHING_CONFIG: 5555 replyToMessage(message, message.what); 5556 break; 5557 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5558 case CMD_IP_CONFIGURATION_LOST: 5559 case CMD_IP_REACHABILITY_LOST: 5560 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5561 break; 5562 case CMD_GET_CONNECTION_STATISTICS: 5563 replyToMessage(message, message.what, mWifiConnectionStatistics); 5564 break; 5565 case CMD_REMOVE_APP_CONFIGURATIONS: 5566 deferMessage(message); 5567 break; 5568 case CMD_REMOVE_USER_CONFIGURATIONS: 5569 deferMessage(message); 5570 break; 5571 case CMD_START_IP_PACKET_OFFLOAD: 5572 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5573 message.arg1, 5574 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5575 break; 5576 case CMD_STOP_IP_PACKET_OFFLOAD: 5577 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5578 message.arg1, 5579 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5580 break; 5581 case CMD_START_RSSI_MONITORING_OFFLOAD: 5582 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5583 break; 5584 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5585 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5586 break; 5587 case CMD_USER_SWITCH: 5588 mCurrentUserId = message.arg1; 5589 mWifiConfigStore.handleUserSwitch(); 5590 break; 5591 default: 5592 loge("Error! unhandled message" + message); 5593 break; 5594 } 5595 return HANDLED; 5596 } 5597 } 5598 5599 class InitialState extends State { 5600 @Override 5601 public void enter() { 5602 mWifiNative.stopHal(); 5603 mWifiNative.unloadDriver(); 5604 if (mWifiP2pChannel == null) { 5605 mWifiP2pChannel = new AsyncChannel(); 5606 mWifiP2pChannel.connect(mContext, getHandler(), 5607 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5608 } 5609 5610 if (mWifiApConfigChannel == null) { 5611 mWifiApConfigChannel = new AsyncChannel(); 5612 mWifiApConfigStore = mFacade.makeApConfigStore(mContext, getHandler()); 5613 mWifiApConfigStore.loadApConfiguration(); 5614 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5615 mWifiApConfigStore.getMessenger()); 5616 } 5617 5618 if (mWifiConfigStore.enableHalBasedPno.get()) { 5619 // make sure developer Settings are in sync with the config option 5620 mHalBasedPnoEnableInDevSettings = true; 5621 } 5622 } 5623 @Override 5624 public boolean processMessage(Message message) { 5625 logStateAndMessage(message, this); 5626 switch (message.what) { 5627 case CMD_START_SUPPLICANT: 5628 if (mWifiNative.loadDriver()) { 5629 try { 5630 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5631 } catch (Exception e) { 5632 loge("Failed to reload STA firmware " + e); 5633 // Continue 5634 } 5635 5636 try { 5637 // A runtime crash can leave the interface up and 5638 // IP addresses configured, and this affects 5639 // connectivity when supplicant starts up. 5640 // Ensure interface is down and we have no IP 5641 // addresses before a supplicant start. 5642 mNwService.setInterfaceDown(mInterfaceName); 5643 mNwService.clearInterfaceAddresses(mInterfaceName); 5644 5645 // Set privacy extensions 5646 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5647 5648 // IPv6 is enabled only as long as access point is connected since: 5649 // - IPv6 addresses and routes stick around after disconnection 5650 // - kernel is unaware when connected and fails to start IPv6 negotiation 5651 // - kernel can start autoconfiguration when 802.1x is not complete 5652 mNwService.disableIpv6(mInterfaceName); 5653 } catch (RemoteException re) { 5654 loge("Unable to change interface settings: " + re); 5655 } catch (IllegalStateException ie) { 5656 loge("Unable to change interface settings: " + ie); 5657 } 5658 5659 /* Stop a running supplicant after a runtime restart 5660 * Avoids issues with drivers that do not handle interface down 5661 * on a running supplicant properly. 5662 */ 5663 mWifiMonitor.killSupplicant(mP2pSupported); 5664 5665 if (mWifiNative.startHal() == false) { 5666 /* starting HAL is optional */ 5667 loge("Failed to start HAL"); 5668 } 5669 5670 if (mWifiNative.startSupplicant(mP2pSupported)) { 5671 setWifiState(WIFI_STATE_ENABLING); 5672 if (DBG) log("Supplicant start successful"); 5673 mWifiMonitor.startMonitoring(mInterfaceName); 5674 transitionTo(mSupplicantStartingState); 5675 } else { 5676 loge("Failed to start supplicant!"); 5677 } 5678 } else { 5679 loge("Failed to load driver"); 5680 } 5681 break; 5682 case CMD_START_AP: 5683 if (mWifiNative.loadDriver() == false) { 5684 loge("Failed to load driver for softap"); 5685 } else { 5686 if (enableSoftAp() == true) { 5687 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5688 transitionTo(mSoftApStartingState); 5689 } else { 5690 setWifiApState(WIFI_AP_STATE_FAILED, 5691 WifiManager.SAP_START_FAILURE_GENERAL); 5692 transitionTo(mInitialState); 5693 } 5694 } 5695 break; 5696 default: 5697 return NOT_HANDLED; 5698 } 5699 return HANDLED; 5700 } 5701 } 5702 5703 class SupplicantStartingState extends State { 5704 private void initializeWpsDetails() { 5705 String detail; 5706 detail = SystemProperties.get("ro.product.name", ""); 5707 if (!mWifiNative.setDeviceName(detail)) { 5708 loge("Failed to set device name " + detail); 5709 } 5710 detail = SystemProperties.get("ro.product.manufacturer", ""); 5711 if (!mWifiNative.setManufacturer(detail)) { 5712 loge("Failed to set manufacturer " + detail); 5713 } 5714 detail = SystemProperties.get("ro.product.model", ""); 5715 if (!mWifiNative.setModelName(detail)) { 5716 loge("Failed to set model name " + detail); 5717 } 5718 detail = SystemProperties.get("ro.product.model", ""); 5719 if (!mWifiNative.setModelNumber(detail)) { 5720 loge("Failed to set model number " + detail); 5721 } 5722 detail = SystemProperties.get("ro.serialno", ""); 5723 if (!mWifiNative.setSerialNumber(detail)) { 5724 loge("Failed to set serial number " + detail); 5725 } 5726 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5727 loge("Failed to set WPS config methods"); 5728 } 5729 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5730 loge("Failed to set primary device type " + mPrimaryDeviceType); 5731 } 5732 } 5733 5734 @Override 5735 public boolean processMessage(Message message) { 5736 logStateAndMessage(message, this); 5737 5738 switch(message.what) { 5739 case WifiMonitor.SUP_CONNECTION_EVENT: 5740 if (DBG) log("Supplicant connection established"); 5741 setWifiState(WIFI_STATE_ENABLED); 5742 mSupplicantRestartCount = 0; 5743 /* Reset the supplicant state to indicate the supplicant 5744 * state is not known at this time */ 5745 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5746 /* Initialize data structures */ 5747 mLastBssid = null; 5748 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5749 mLastSignalLevel = -1; 5750 5751 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5752 /* set frequency band of operation */ 5753 setFrequencyBand(); 5754 mWifiNative.enableSaveConfig(); 5755 mWifiConfigStore.loadAndEnableAllNetworks(); 5756 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5757 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5758 } 5759 initializeWpsDetails(); 5760 5761 sendSupplicantConnectionChangedBroadcast(true); 5762 transitionTo(mDriverStartedState); 5763 break; 5764 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5765 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5766 loge("Failed to setup control channel, restart supplicant"); 5767 mWifiMonitor.killSupplicant(mP2pSupported); 5768 transitionTo(mInitialState); 5769 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5770 } else { 5771 loge("Failed " + mSupplicantRestartCount + 5772 " times to start supplicant, unload driver"); 5773 mSupplicantRestartCount = 0; 5774 setWifiState(WIFI_STATE_UNKNOWN); 5775 transitionTo(mInitialState); 5776 } 5777 break; 5778 case CMD_START_SUPPLICANT: 5779 case CMD_STOP_SUPPLICANT: 5780 case CMD_START_AP: 5781 case CMD_STOP_AP: 5782 case CMD_START_DRIVER: 5783 case CMD_STOP_DRIVER: 5784 case CMD_SET_OPERATIONAL_MODE: 5785 case CMD_SET_COUNTRY_CODE: 5786 case CMD_SET_FREQUENCY_BAND: 5787 case CMD_START_PACKET_FILTERING: 5788 case CMD_STOP_PACKET_FILTERING: 5789 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5790 deferMessage(message); 5791 break; 5792 default: 5793 return NOT_HANDLED; 5794 } 5795 return HANDLED; 5796 } 5797 } 5798 5799 class SupplicantStartedState extends State { 5800 @Override 5801 public void enter() { 5802 /* Wifi is available as long as we have a connection to supplicant */ 5803 mNetworkInfo.setIsAvailable(true); 5804 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5805 5806 int defaultInterval = mContext.getResources().getInteger( 5807 R.integer.config_wifi_supplicant_scan_interval); 5808 5809 mSupplicantScanIntervalMs = mFacade.getLongSetting(mContext, 5810 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5811 defaultInterval); 5812 5813 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5814 mWifiNative.setExternalSim(true); 5815 5816 /* turn on use of DFS channels */ 5817 mWifiNative.setDfsFlag(true); 5818 5819 /* set country code */ 5820 initializeCountryCode(); 5821 5822 setRandomMacOui(); 5823 mWifiNative.enableAutoConnect(false); 5824 } 5825 5826 @Override 5827 public boolean processMessage(Message message) { 5828 logStateAndMessage(message, this); 5829 5830 switch(message.what) { 5831 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5832 if (mP2pSupported) { 5833 transitionTo(mWaitForP2pDisableState); 5834 } else { 5835 transitionTo(mSupplicantStoppingState); 5836 } 5837 break; 5838 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5839 loge("Connection lost, restart supplicant"); 5840 handleSupplicantConnectionLoss(true); 5841 handleNetworkDisconnect(); 5842 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5843 if (mP2pSupported) { 5844 transitionTo(mWaitForP2pDisableState); 5845 } else { 5846 transitionTo(mInitialState); 5847 } 5848 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5849 break; 5850 case WifiMonitor.SCAN_RESULTS_EVENT: 5851 case WifiMonitor.SCAN_FAILED_EVENT: 5852 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5853 noteScanEnd(); 5854 setScanResults(); 5855 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5856 /* Just updated results from full scan, let apps know about this */ 5857 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5858 sendScanResultsAvailableBroadcast(scanSucceeded); 5859 } 5860 mSendScanResultsBroadcast = false; 5861 mIsScanOngoing = false; 5862 mIsFullScanOngoing = false; 5863 if (mBufferedScanMsg.size() > 0) 5864 sendMessage(mBufferedScanMsg.remove()); 5865 break; 5866 case CMD_PING_SUPPLICANT: 5867 boolean ok = mWifiNative.ping(); 5868 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5869 break; 5870 case CMD_GET_CAPABILITY_FREQ: 5871 String freqs = mWifiNative.getFreqCapability(); 5872 replyToMessage(message, message.what, freqs); 5873 break; 5874 case CMD_START_AP: 5875 /* Cannot start soft AP while in client mode */ 5876 loge("Failed to start soft AP with a running supplicant"); 5877 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5878 break; 5879 case CMD_SET_OPERATIONAL_MODE: 5880 mOperationalMode = message.arg1; 5881 mWifiConfigStore. 5882 setAndEnableLastSelectedConfiguration( 5883 WifiConfiguration.INVALID_NETWORK_ID); 5884 break; 5885 case CMD_TARGET_BSSID: 5886 // Trying to associate to this BSSID 5887 if (message.obj != null) { 5888 mTargetRoamBSSID = (String) message.obj; 5889 } 5890 break; 5891 case CMD_GET_LINK_LAYER_STATS: 5892 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5893 if (stats == null) { 5894 // When firmware doesnt support link layer stats, return an empty object 5895 stats = new WifiLinkLayerStats(); 5896 } 5897 replyToMessage(message, message.what, stats); 5898 break; 5899 case CMD_SET_COUNTRY_CODE: 5900 String country = (String) message.obj; 5901 final boolean persist = (message.arg2 == 1); 5902 final int sequence = message.arg1; 5903 if (sequence != mCountryCodeSequence.get()) { 5904 if (DBG) log("set country code ignored due to sequnce num"); 5905 break; 5906 } 5907 5908 country = country.toUpperCase(Locale.ROOT); 5909 5910 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5911 5912 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 5913 if (mWifiNative.setCountryCode(country)) { 5914 mDriverSetCountryCode = country; 5915 } else { 5916 loge("Failed to set country code " + country); 5917 } 5918 } 5919 5920 if (persist) { 5921 Settings.Global.putString(mContext.getContentResolver(), 5922 Settings.Global.WIFI_COUNTRY_CODE, 5923 country == null ? "" : country); 5924 } 5925 5926 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5927 break; 5928 case CMD_RESET_SIM_NETWORKS: 5929 log("resetting EAP-SIM/AKA/AKA' networks since SIM was removed"); 5930 mWifiConfigStore.resetSimNetworks(); 5931 break; 5932 default: 5933 return NOT_HANDLED; 5934 } 5935 return HANDLED; 5936 } 5937 5938 @Override 5939 public void exit() { 5940 mNetworkInfo.setIsAvailable(false); 5941 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5942 } 5943 } 5944 5945 class SupplicantStoppingState extends State { 5946 @Override 5947 public void enter() { 5948 /* Send any reset commands to supplicant before shutting it down */ 5949 handleNetworkDisconnect(); 5950 if (mDhcpStateMachine != null) { 5951 mDhcpStateMachine.doQuit(); 5952 } 5953 5954 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5955 if (suppState == null) suppState = "unknown"; 5956 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5957 if (p2pSuppState == null) p2pSuppState = "unknown"; 5958 5959 logd("SupplicantStoppingState: stopSupplicant " 5960 + " init.svc.wpa_supplicant=" + suppState 5961 + " init.svc.p2p_supplicant=" + p2pSuppState); 5962 mWifiMonitor.stopSupplicant(); 5963 5964 /* Send ourselves a delayed message to indicate failure after a wait time */ 5965 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5966 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5967 setWifiState(WIFI_STATE_DISABLING); 5968 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5969 } 5970 @Override 5971 public boolean processMessage(Message message) { 5972 logStateAndMessage(message, this); 5973 5974 switch(message.what) { 5975 case WifiMonitor.SUP_CONNECTION_EVENT: 5976 loge("Supplicant connection received while stopping"); 5977 break; 5978 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5979 if (DBG) log("Supplicant connection lost"); 5980 handleSupplicantConnectionLoss(false); 5981 transitionTo(mInitialState); 5982 break; 5983 case CMD_STOP_SUPPLICANT_FAILED: 5984 if (message.arg1 == mSupplicantStopFailureToken) { 5985 loge("Timed out on a supplicant stop, kill and proceed"); 5986 handleSupplicantConnectionLoss(true); 5987 transitionTo(mInitialState); 5988 } 5989 break; 5990 case CMD_START_SUPPLICANT: 5991 case CMD_STOP_SUPPLICANT: 5992 case CMD_START_AP: 5993 case CMD_STOP_AP: 5994 case CMD_START_DRIVER: 5995 case CMD_STOP_DRIVER: 5996 case CMD_SET_OPERATIONAL_MODE: 5997 case CMD_SET_COUNTRY_CODE: 5998 case CMD_SET_FREQUENCY_BAND: 5999 case CMD_START_PACKET_FILTERING: 6000 case CMD_STOP_PACKET_FILTERING: 6001 deferMessage(message); 6002 break; 6003 default: 6004 return NOT_HANDLED; 6005 } 6006 return HANDLED; 6007 } 6008 } 6009 6010 class DriverStartingState extends State { 6011 private int mTries; 6012 @Override 6013 public void enter() { 6014 mTries = 1; 6015 /* Send ourselves a delayed message to start driver a second time */ 6016 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6017 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6018 } 6019 @Override 6020 public boolean processMessage(Message message) { 6021 logStateAndMessage(message, this); 6022 6023 switch(message.what) { 6024 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6025 SupplicantState state = handleSupplicantStateChange(message); 6026 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6027 * a state that indicates driver has started, it is ready to 6028 * receive driver commands 6029 */ 6030 if (SupplicantState.isDriverActive(state)) { 6031 transitionTo(mDriverStartedState); 6032 } 6033 break; 6034 case CMD_DRIVER_START_TIMED_OUT: 6035 if (message.arg1 == mDriverStartToken) { 6036 if (mTries >= 2) { 6037 loge("Failed to start driver after " + mTries); 6038 transitionTo(mDriverStoppedState); 6039 } else { 6040 loge("Driver start failed, retrying"); 6041 mWakeLock.acquire(); 6042 mWifiNative.startDriver(); 6043 mWakeLock.release(); 6044 6045 ++mTries; 6046 /* Send ourselves a delayed message to start driver again */ 6047 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6048 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6049 } 6050 } 6051 break; 6052 /* Queue driver commands & connection events */ 6053 case CMD_START_DRIVER: 6054 case CMD_STOP_DRIVER: 6055 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6056 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6057 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6058 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6059 case WifiMonitor.WPS_OVERLAP_EVENT: 6060 case CMD_SET_COUNTRY_CODE: 6061 case CMD_SET_FREQUENCY_BAND: 6062 case CMD_START_PACKET_FILTERING: 6063 case CMD_STOP_PACKET_FILTERING: 6064 case CMD_START_SCAN: 6065 case CMD_DISCONNECT: 6066 case CMD_REASSOCIATE: 6067 case CMD_RECONNECT: 6068 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6069 deferMessage(message); 6070 break; 6071 case WifiMonitor.SCAN_RESULTS_EVENT: 6072 case WifiMonitor.SCAN_FAILED_EVENT: 6073 // Loose scan results obtained in Driver Starting state, they can only confuse 6074 // the state machine 6075 break; 6076 default: 6077 return NOT_HANDLED; 6078 } 6079 return HANDLED; 6080 } 6081 } 6082 6083 class DriverStartedState extends State { 6084 @Override 6085 public void enter() { 6086 6087 if (PDBG) { 6088 logd("DriverStartedState enter"); 6089 } 6090 6091 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6092 mIsRunning = true; 6093 updateBatteryWorkSource(null); 6094 /** 6095 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6096 * When this mode is on, some of the low-level scan parameters used by the 6097 * driver are changed to reduce interference with bluetooth 6098 */ 6099 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6100 /* initialize network state */ 6101 setNetworkDetailedState(DetailedState.DISCONNECTED); 6102 6103 /* Remove any filtering on Multicast v6 at start */ 6104 mWifiNative.stopFilteringMulticastV6Packets(); 6105 6106 /* Reset Multicast v4 filtering state */ 6107 if (mFilteringMulticastV4Packets.get()) { 6108 mWifiNative.startFilteringMulticastV4Packets(); 6109 } else { 6110 mWifiNative.stopFilteringMulticastV4Packets(); 6111 } 6112 6113 if (mOperationalMode != CONNECT_MODE) { 6114 mWifiNative.disconnect(); 6115 mWifiConfigStore.disableAllNetworks(); 6116 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6117 setWifiState(WIFI_STATE_DISABLED); 6118 } 6119 transitionTo(mScanModeState); 6120 } else { 6121 6122 // Status pulls in the current supplicant state and network connection state 6123 // events over the monitor connection. This helps framework sync up with 6124 // current supplicant state 6125 // TODO: actually check th supplicant status string and make sure the supplicant 6126 // is in disconnecte4d state. 6127 mWifiNative.status(); 6128 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6129 transitionTo(mDisconnectedState); 6130 transitionTo(mDisconnectedState); 6131 } 6132 6133 // We may have missed screen update at boot 6134 if (mScreenBroadcastReceived.get() == false) { 6135 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6136 Context.POWER_SERVICE); 6137 handleScreenStateChanged(powerManager.isScreenOn()); 6138 } else { 6139 // Set the right suspend mode settings 6140 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6141 && mUserWantsSuspendOpt.get()); 6142 } 6143 mWifiNative.setPowerSave(true); 6144 6145 if (mP2pSupported) { 6146 if (mOperationalMode == CONNECT_MODE) { 6147 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6148 } else { 6149 // P2P statemachine starts in disabled state, and is not enabled until 6150 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6151 // keep it disabled. 6152 } 6153 } 6154 6155 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6156 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6157 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6158 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6159 6160 mHalFeatureSet = mWifiNative.getSupportedFeatureSet(); 6161 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6162 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6163 mHalBasedPnoDriverSupported = true; 6164 } 6165 6166 // Enable link layer stats gathering 6167 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6168 6169 if (PDBG) { 6170 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6171 + " feature=" + mHalFeatureSet); 6172 } 6173 } 6174 6175 @Override 6176 public boolean processMessage(Message message) { 6177 logStateAndMessage(message, this); 6178 6179 switch(message.what) { 6180 case CMD_START_SCAN: 6181 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6182 break; 6183 case CMD_SET_FREQUENCY_BAND: 6184 int band = message.arg1; 6185 if (DBG) log("set frequency band " + band); 6186 if (mWifiNative.setBand(band)) { 6187 6188 if (PDBG) logd("did set frequency band " + band); 6189 6190 mFrequencyBand.set(band); 6191 // Flush old data - like scan results 6192 mWifiNative.bssFlush(); 6193 // Fetch the latest scan results when frequency band is set 6194// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6195 6196 if (PDBG) logd("done set frequency band " + band); 6197 6198 } else { 6199 loge("Failed to set frequency band " + band); 6200 } 6201 break; 6202 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6203 mBluetoothConnectionActive = (message.arg1 != 6204 BluetoothAdapter.STATE_DISCONNECTED); 6205 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6206 break; 6207 case CMD_STOP_DRIVER: 6208 int mode = message.arg1; 6209 6210 log("stop driver"); 6211 mWifiConfigStore.disableAllNetworks(); 6212 6213 if (getCurrentState() != mDisconnectedState) { 6214 mWifiNative.disconnect(); 6215 handleNetworkDisconnect(); 6216 } 6217 mWakeLock.acquire(); 6218 mWifiNative.stopDriver(); 6219 mWakeLock.release(); 6220 if (mP2pSupported) { 6221 transitionTo(mWaitForP2pDisableState); 6222 } else { 6223 transitionTo(mDriverStoppingState); 6224 } 6225 break; 6226 case CMD_START_DRIVER: 6227 if (mOperationalMode == CONNECT_MODE) { 6228 mWifiConfigStore.enableAllNetworks(); 6229 } 6230 break; 6231 case CMD_START_PACKET_FILTERING: 6232 if (message.arg1 == MULTICAST_V6) { 6233 mWifiNative.startFilteringMulticastV6Packets(); 6234 } else if (message.arg1 == MULTICAST_V4) { 6235 mWifiNative.startFilteringMulticastV4Packets(); 6236 } else { 6237 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6238 } 6239 break; 6240 case CMD_STOP_PACKET_FILTERING: 6241 if (message.arg1 == MULTICAST_V6) { 6242 mWifiNative.stopFilteringMulticastV6Packets(); 6243 } else if (message.arg1 == MULTICAST_V4) { 6244 mWifiNative.stopFilteringMulticastV4Packets(); 6245 } else { 6246 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6247 } 6248 break; 6249 case CMD_SET_SUSPEND_OPT_ENABLED: 6250 if (message.arg1 == 1) { 6251 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6252 mSuspendWakeLock.release(); 6253 } else { 6254 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6255 } 6256 break; 6257 case CMD_SET_HIGH_PERF_MODE: 6258 if (message.arg1 == 1) { 6259 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6260 } else { 6261 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6262 } 6263 break; 6264 case CMD_ENABLE_TDLS: 6265 if (message.obj != null) { 6266 String remoteAddress = (String) message.obj; 6267 boolean enable = (message.arg1 == 1); 6268 mWifiNative.startTdls(remoteAddress, enable); 6269 } 6270 break; 6271 case WifiMonitor.ANQP_DONE_EVENT: 6272 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6273 break; 6274 case CMD_STOP_IP_PACKET_OFFLOAD: { 6275 int slot = message.arg1; 6276 int ret = stopWifiIPPacketOffload(slot); 6277 if (mNetworkAgent != null) { 6278 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6279 } 6280 break; 6281 } 6282 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6283 mWifiConfigStore.notifyIconReceived((IconEvent)message.obj); 6284 break; 6285 case WifiMonitor.HS20_REMEDIATION_EVENT: 6286 mWifiConfigStore.wnmFrameReceived((String)message.obj); 6287 break; 6288 case WifiMonitor.HS20_DEAUTH_EVENT: 6289 mWifiConfigStore.wnmFrameReceived((String)message.obj); 6290 break; 6291 default: 6292 return NOT_HANDLED; 6293 } 6294 return HANDLED; 6295 } 6296 @Override 6297 public void exit() { 6298 6299 mWifiLogger.stopLogging(); 6300 6301 mIsRunning = false; 6302 updateBatteryWorkSource(null); 6303 mScanResults = new ArrayList<>(); 6304 6305 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6306 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6307 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6308 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6309 noteScanEnd(); // wrap up any pending request. 6310 mBufferedScanMsg.clear(); 6311 } 6312 } 6313 6314 class WaitForP2pDisableState extends State { 6315 private State mTransitionToState; 6316 @Override 6317 public void enter() { 6318 switch (getCurrentMessage().what) { 6319 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6320 mTransitionToState = mInitialState; 6321 break; 6322 case CMD_STOP_DRIVER: 6323 mTransitionToState = mDriverStoppingState; 6324 break; 6325 case CMD_STOP_SUPPLICANT: 6326 mTransitionToState = mSupplicantStoppingState; 6327 break; 6328 default: 6329 mTransitionToState = mDriverStoppingState; 6330 break; 6331 } 6332 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6333 } 6334 @Override 6335 public boolean processMessage(Message message) { 6336 logStateAndMessage(message, this); 6337 6338 switch(message.what) { 6339 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6340 transitionTo(mTransitionToState); 6341 break; 6342 /* Defer wifi start/shut and driver commands */ 6343 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6344 case CMD_START_SUPPLICANT: 6345 case CMD_STOP_SUPPLICANT: 6346 case CMD_START_AP: 6347 case CMD_STOP_AP: 6348 case CMD_START_DRIVER: 6349 case CMD_STOP_DRIVER: 6350 case CMD_SET_OPERATIONAL_MODE: 6351 case CMD_SET_COUNTRY_CODE: 6352 case CMD_SET_FREQUENCY_BAND: 6353 case CMD_START_PACKET_FILTERING: 6354 case CMD_STOP_PACKET_FILTERING: 6355 case CMD_START_SCAN: 6356 case CMD_DISCONNECT: 6357 case CMD_REASSOCIATE: 6358 case CMD_RECONNECT: 6359 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6360 deferMessage(message); 6361 break; 6362 default: 6363 return NOT_HANDLED; 6364 } 6365 return HANDLED; 6366 } 6367 } 6368 6369 class DriverStoppingState extends State { 6370 @Override 6371 public boolean processMessage(Message message) { 6372 logStateAndMessage(message, this); 6373 6374 switch(message.what) { 6375 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6376 SupplicantState state = handleSupplicantStateChange(message); 6377 if (state == SupplicantState.INTERFACE_DISABLED) { 6378 transitionTo(mDriverStoppedState); 6379 } 6380 break; 6381 /* Queue driver commands */ 6382 case CMD_START_DRIVER: 6383 case CMD_STOP_DRIVER: 6384 case CMD_SET_COUNTRY_CODE: 6385 case CMD_SET_FREQUENCY_BAND: 6386 case CMD_START_PACKET_FILTERING: 6387 case CMD_STOP_PACKET_FILTERING: 6388 case CMD_START_SCAN: 6389 case CMD_DISCONNECT: 6390 case CMD_REASSOCIATE: 6391 case CMD_RECONNECT: 6392 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6393 deferMessage(message); 6394 break; 6395 default: 6396 return NOT_HANDLED; 6397 } 6398 return HANDLED; 6399 } 6400 } 6401 6402 class DriverStoppedState extends State { 6403 @Override 6404 public boolean processMessage(Message message) { 6405 logStateAndMessage(message, this); 6406 switch (message.what) { 6407 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6408 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6409 SupplicantState state = stateChangeResult.state; 6410 // A WEXT bug means that we can be back to driver started state 6411 // unexpectedly 6412 if (SupplicantState.isDriverActive(state)) { 6413 transitionTo(mDriverStartedState); 6414 } 6415 break; 6416 case CMD_START_DRIVER: 6417 mWakeLock.acquire(); 6418 mWifiNative.startDriver(); 6419 mWakeLock.release(); 6420 transitionTo(mDriverStartingState); 6421 break; 6422 default: 6423 return NOT_HANDLED; 6424 } 6425 return HANDLED; 6426 } 6427 } 6428 6429 class ScanModeState extends State { 6430 private int mLastOperationMode; 6431 @Override 6432 public void enter() { 6433 mLastOperationMode = mOperationalMode; 6434 } 6435 @Override 6436 public boolean processMessage(Message message) { 6437 logStateAndMessage(message, this); 6438 6439 switch(message.what) { 6440 case CMD_SET_OPERATIONAL_MODE: 6441 if (message.arg1 == CONNECT_MODE) { 6442 6443 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6444 setWifiState(WIFI_STATE_ENABLED); 6445 // Load and re-enable networks when going back to enabled state 6446 // This is essential for networks to show up after restore 6447 mWifiConfigStore.loadAndEnableAllNetworks(); 6448 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6449 } else { 6450 mWifiConfigStore.enableAllNetworks(); 6451 } 6452 // start a scan to trigger Quality network selection 6453 startScan(ENABLE_WIFI, 0, null, null); 6454 6455 // Loose last selection choice since user toggled WiFi 6456 mWifiConfigStore. 6457 setAndEnableLastSelectedConfiguration( 6458 WifiConfiguration.INVALID_NETWORK_ID); 6459 6460 mOperationalMode = CONNECT_MODE; 6461 transitionTo(mDisconnectedState); 6462 } else { 6463 // Nothing to do 6464 return HANDLED; 6465 } 6466 break; 6467 // Handle scan. All the connection related commands are 6468 // handled only in ConnectModeState 6469 case CMD_START_SCAN: 6470 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6471 break; 6472 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6473 SupplicantState state = handleSupplicantStateChange(message); 6474 if(DBG) log("SupplicantState= " + state); 6475 break; 6476 default: 6477 return NOT_HANDLED; 6478 } 6479 return HANDLED; 6480 } 6481 } 6482 6483 6484 String smToString(Message message) { 6485 return smToString(message.what); 6486 } 6487 6488 String smToString(int what) { 6489 String s = "unknown"; 6490 switch (what) { 6491 case WifiMonitor.DRIVER_HUNG_EVENT: 6492 s = "DRIVER_HUNG_EVENT"; 6493 break; 6494 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6495 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6496 break; 6497 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6498 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6499 break; 6500 case CMD_SET_FREQUENCY_BAND: 6501 s = "CMD_SET_FREQUENCY_BAND"; 6502 break; 6503 case CMD_DELAYED_NETWORK_DISCONNECT: 6504 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6505 break; 6506 case CMD_TEST_NETWORK_DISCONNECT: 6507 s = "CMD_TEST_NETWORK_DISCONNECT"; 6508 break; 6509 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6510 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6511 break; 6512 case CMD_DISABLE_EPHEMERAL_NETWORK: 6513 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6514 break; 6515 case CMD_START_DRIVER: 6516 s = "CMD_START_DRIVER"; 6517 break; 6518 case CMD_STOP_DRIVER: 6519 s = "CMD_STOP_DRIVER"; 6520 break; 6521 case CMD_STOP_SUPPLICANT: 6522 s = "CMD_STOP_SUPPLICANT"; 6523 break; 6524 case CMD_STOP_SUPPLICANT_FAILED: 6525 s = "CMD_STOP_SUPPLICANT_FAILED"; 6526 break; 6527 case CMD_START_SUPPLICANT: 6528 s = "CMD_START_SUPPLICANT"; 6529 break; 6530 case CMD_REQUEST_AP_CONFIG: 6531 s = "CMD_REQUEST_AP_CONFIG"; 6532 break; 6533 case CMD_RESPONSE_AP_CONFIG: 6534 s = "CMD_RESPONSE_AP_CONFIG"; 6535 break; 6536 case CMD_TETHER_STATE_CHANGE: 6537 s = "CMD_TETHER_STATE_CHANGE"; 6538 break; 6539 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6540 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6541 break; 6542 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6543 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6544 break; 6545 case CMD_ADD_OR_UPDATE_NETWORK: 6546 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6547 break; 6548 case CMD_REMOVE_NETWORK: 6549 s = "CMD_REMOVE_NETWORK"; 6550 break; 6551 case CMD_ENABLE_NETWORK: 6552 s = "CMD_ENABLE_NETWORK"; 6553 break; 6554 case CMD_ENABLE_ALL_NETWORKS: 6555 s = "CMD_ENABLE_ALL_NETWORKS"; 6556 break; 6557 case CMD_AUTO_CONNECT: 6558 s = "CMD_AUTO_CONNECT"; 6559 break; 6560 case CMD_AUTO_ROAM: 6561 s = "CMD_AUTO_ROAM"; 6562 break; 6563 case CMD_AUTO_SAVE_NETWORK: 6564 s = "CMD_AUTO_SAVE_NETWORK"; 6565 break; 6566 case CMD_BOOT_COMPLETED: 6567 s = "CMD_BOOT_COMPLETED"; 6568 break; 6569 case DhcpStateMachine.CMD_START_DHCP: 6570 s = "CMD_START_DHCP"; 6571 break; 6572 case DhcpStateMachine.CMD_STOP_DHCP: 6573 s = "CMD_STOP_DHCP"; 6574 break; 6575 case DhcpStateMachine.CMD_RENEW_DHCP: 6576 s = "CMD_RENEW_DHCP"; 6577 break; 6578 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6579 s = "CMD_PRE_DHCP_ACTION"; 6580 break; 6581 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6582 s = "CMD_POST_DHCP_ACTION"; 6583 break; 6584 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6585 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6586 break; 6587 case DhcpStateMachine.CMD_ON_QUIT: 6588 s = "CMD_ON_QUIT"; 6589 break; 6590 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6591 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6592 break; 6593 case WifiManager.DISABLE_NETWORK: 6594 s = "WifiManager.DISABLE_NETWORK"; 6595 break; 6596 case CMD_BLACKLIST_NETWORK: 6597 s = "CMD_BLACKLIST_NETWORK"; 6598 break; 6599 case CMD_CLEAR_BLACKLIST: 6600 s = "CMD_CLEAR_BLACKLIST"; 6601 break; 6602 case CMD_SAVE_CONFIG: 6603 s = "CMD_SAVE_CONFIG"; 6604 break; 6605 case CMD_GET_CONFIGURED_NETWORKS: 6606 s = "CMD_GET_CONFIGURED_NETWORKS"; 6607 break; 6608 case CMD_GET_SUPPORTED_FEATURES: 6609 s = "CMD_GET_SUPPORTED_FEATURES"; 6610 break; 6611 case CMD_UNWANTED_NETWORK: 6612 s = "CMD_UNWANTED_NETWORK"; 6613 break; 6614 case CMD_NETWORK_STATUS: 6615 s = "CMD_NETWORK_STATUS"; 6616 break; 6617 case CMD_GET_LINK_LAYER_STATS: 6618 s = "CMD_GET_LINK_LAYER_STATS"; 6619 break; 6620 case CMD_GET_MATCHING_CONFIG: 6621 s = "CMD_GET_MATCHING_CONFIG"; 6622 break; 6623 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6624 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6625 break; 6626 case CMD_DISCONNECT: 6627 s = "CMD_DISCONNECT"; 6628 break; 6629 case CMD_RECONNECT: 6630 s = "CMD_RECONNECT"; 6631 break; 6632 case CMD_REASSOCIATE: 6633 s = "CMD_REASSOCIATE"; 6634 break; 6635 case CMD_GET_CONNECTION_STATISTICS: 6636 s = "CMD_GET_CONNECTION_STATISTICS"; 6637 break; 6638 case CMD_SET_HIGH_PERF_MODE: 6639 s = "CMD_SET_HIGH_PERF_MODE"; 6640 break; 6641 case CMD_SET_COUNTRY_CODE: 6642 s = "CMD_SET_COUNTRY_CODE"; 6643 break; 6644 case CMD_ENABLE_RSSI_POLL: 6645 s = "CMD_ENABLE_RSSI_POLL"; 6646 break; 6647 case CMD_RSSI_POLL: 6648 s = "CMD_RSSI_POLL"; 6649 break; 6650 case CMD_START_PACKET_FILTERING: 6651 s = "CMD_START_PACKET_FILTERING"; 6652 break; 6653 case CMD_STOP_PACKET_FILTERING: 6654 s = "CMD_STOP_PACKET_FILTERING"; 6655 break; 6656 case CMD_SET_SUSPEND_OPT_ENABLED: 6657 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6658 break; 6659 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6660 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6661 break; 6662 case CMD_UPDATE_LINKPROPERTIES: 6663 s = "CMD_UPDATE_LINKPROPERTIES"; 6664 break; 6665 case CMD_RELOAD_TLS_AND_RECONNECT: 6666 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6667 break; 6668 case WifiManager.CONNECT_NETWORK: 6669 s = "CONNECT_NETWORK"; 6670 break; 6671 case WifiManager.SAVE_NETWORK: 6672 s = "SAVE_NETWORK"; 6673 break; 6674 case WifiManager.FORGET_NETWORK: 6675 s = "FORGET_NETWORK"; 6676 break; 6677 case WifiMonitor.SUP_CONNECTION_EVENT: 6678 s = "SUP_CONNECTION_EVENT"; 6679 break; 6680 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6681 s = "SUP_DISCONNECTION_EVENT"; 6682 break; 6683 case WifiMonitor.SCAN_RESULTS_EVENT: 6684 s = "SCAN_RESULTS_EVENT"; 6685 break; 6686 case WifiMonitor.SCAN_FAILED_EVENT: 6687 s = "SCAN_FAILED_EVENT"; 6688 break; 6689 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6690 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6691 break; 6692 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6693 s = "AUTHENTICATION_FAILURE_EVENT"; 6694 break; 6695 case WifiMonitor.SSID_TEMP_DISABLED: 6696 s = "SSID_TEMP_DISABLED"; 6697 break; 6698 case WifiMonitor.SSID_REENABLED: 6699 s = "SSID_REENABLED"; 6700 break; 6701 case WifiMonitor.WPS_SUCCESS_EVENT: 6702 s = "WPS_SUCCESS_EVENT"; 6703 break; 6704 case WifiMonitor.WPS_FAIL_EVENT: 6705 s = "WPS_FAIL_EVENT"; 6706 break; 6707 case WifiMonitor.SUP_REQUEST_IDENTITY: 6708 s = "SUP_REQUEST_IDENTITY"; 6709 break; 6710 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6711 s = "NETWORK_CONNECTION_EVENT"; 6712 break; 6713 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6714 s = "NETWORK_DISCONNECTION_EVENT"; 6715 break; 6716 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6717 s = "ASSOCIATION_REJECTION_EVENT"; 6718 break; 6719 case WifiMonitor.ANQP_DONE_EVENT: 6720 s = "WifiMonitor.ANQP_DONE_EVENT"; 6721 break; 6722 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6723 s = "WifiMonitor.RX_HS20_ANQP_ICON_EVENT"; 6724 break; 6725 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6726 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6727 break; 6728 case WifiMonitor.HS20_DEAUTH_EVENT: 6729 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6730 break; 6731 case WifiMonitor.HS20_REMEDIATION_EVENT: 6732 s = "WifiMonitor.HS20_REMEDIATION_EVENT"; 6733 break; 6734 case WifiMonitor.GAS_QUERY_START_EVENT: 6735 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6736 break; 6737 case CMD_SET_OPERATIONAL_MODE: 6738 s = "CMD_SET_OPERATIONAL_MODE"; 6739 break; 6740 case CMD_START_SCAN: 6741 s = "CMD_START_SCAN"; 6742 break; 6743 case CMD_DISABLE_P2P_RSP: 6744 s = "CMD_DISABLE_P2P_RSP"; 6745 break; 6746 case CMD_DISABLE_P2P_REQ: 6747 s = "CMD_DISABLE_P2P_REQ"; 6748 break; 6749 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6750 s = "GROUP_CREATING_TIMED_OUT"; 6751 break; 6752 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6753 s = "P2P_CONNECTION_CHANGED"; 6754 break; 6755 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6756 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6757 break; 6758 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6759 s = "P2P.SET_MIRACAST_MODE"; 6760 break; 6761 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6762 s = "P2P.BLOCK_DISCOVERY"; 6763 break; 6764 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6765 s = "P2P.SET_COUNTRY_CODE"; 6766 break; 6767 case WifiManager.CANCEL_WPS: 6768 s = "CANCEL_WPS"; 6769 break; 6770 case WifiManager.CANCEL_WPS_FAILED: 6771 s = "CANCEL_WPS_FAILED"; 6772 break; 6773 case WifiManager.CANCEL_WPS_SUCCEDED: 6774 s = "CANCEL_WPS_SUCCEDED"; 6775 break; 6776 case WifiManager.START_WPS: 6777 s = "START_WPS"; 6778 break; 6779 case WifiManager.START_WPS_SUCCEEDED: 6780 s = "START_WPS_SUCCEEDED"; 6781 break; 6782 case WifiManager.WPS_FAILED: 6783 s = "WPS_FAILED"; 6784 break; 6785 case WifiManager.WPS_COMPLETED: 6786 s = "WPS_COMPLETED"; 6787 break; 6788 case WifiManager.RSSI_PKTCNT_FETCH: 6789 s = "RSSI_PKTCNT_FETCH"; 6790 break; 6791 case CMD_IP_CONFIGURATION_LOST: 6792 s = "CMD_IP_CONFIGURATION_LOST"; 6793 break; 6794 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6795 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6796 break; 6797 case CMD_IP_REACHABILITY_LOST: 6798 s = "CMD_IP_REACHABILITY_LOST"; 6799 break; 6800 case CMD_STATIC_IP_SUCCESS: 6801 s = "CMD_STATIC_IP_SUCCESS"; 6802 break; 6803 case CMD_STATIC_IP_FAILURE: 6804 s = "CMD_STATIC_IP_FAILURE"; 6805 break; 6806 case DhcpStateMachine.DHCP_SUCCESS: 6807 s = "DHCP_SUCCESS"; 6808 break; 6809 case DhcpStateMachine.DHCP_FAILURE: 6810 s = "DHCP_FAILURE"; 6811 break; 6812 case CMD_TARGET_BSSID: 6813 s = "CMD_TARGET_BSSID"; 6814 break; 6815 case CMD_ASSOCIATED_BSSID: 6816 s = "CMD_ASSOCIATED_BSSID"; 6817 break; 6818 case CMD_REMOVE_APP_CONFIGURATIONS: 6819 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6820 break; 6821 case CMD_REMOVE_USER_CONFIGURATIONS: 6822 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6823 break; 6824 case CMD_ROAM_WATCHDOG_TIMER: 6825 s = "CMD_ROAM_WATCHDOG_TIMER"; 6826 break; 6827 case CMD_SCREEN_STATE_CHANGED: 6828 s = "CMD_SCREEN_STATE_CHANGED"; 6829 break; 6830 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6831 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6832 break; 6833 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6834 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6835 break; 6836 case CMD_STARTED_PNO_DBG: 6837 s = "CMD_STARTED_PNO_DBG"; 6838 break; 6839 case CMD_STARTED_GSCAN_DBG: 6840 s = "CMD_STARTED_GSCAN_DBG"; 6841 break; 6842 case CMD_PNO_NETWORK_FOUND: 6843 s = "CMD_PNO_NETWORK_FOUND"; 6844 break; 6845 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6846 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6847 break; 6848 case CMD_START_IP_PACKET_OFFLOAD: 6849 s = "CMD_START_IP_PACKET_OFFLOAD"; 6850 break; 6851 case CMD_STOP_IP_PACKET_OFFLOAD: 6852 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 6853 break; 6854 case CMD_START_RSSI_MONITORING_OFFLOAD: 6855 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 6856 break; 6857 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 6858 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 6859 break; 6860 case CMD_RSSI_THRESHOLD_BREACH: 6861 s = "CMD_RSSI_THRESHOLD_BREACH"; 6862 break; 6863 case CMD_USER_SWITCH: 6864 s = "CMD_USER_SWITCH"; 6865 break; 6866 case CMD_IPV4_PROVISIONING_SUCCESS: 6867 s = "CMD_IPV4_PROVISIONING_SUCCESS"; 6868 break; 6869 case CMD_IPV4_PROVISIONING_FAILURE: 6870 s = "CMD_IPV4_PROVISIONING_FAILURE"; 6871 break; 6872 default: 6873 s = "what:" + Integer.toString(what); 6874 break; 6875 } 6876 return s; 6877 } 6878 6879 void registerConnected() { 6880 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6881 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6882 if (config != null) { 6883 //Here we will clear all disable counters once a network is connected 6884 //records how long this network is connected in future 6885 config.lastConnected = System.currentTimeMillis(); 6886 config.getNetworkSelectionStatus().clearDisableReasonCounter(); 6887 } 6888 mBadLinkspeedcount = 0; 6889 } 6890 } 6891 6892 void registerDisconnected() { 6893 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6894 long now_ms = System.currentTimeMillis(); 6895 // We are switching away from this configuration, 6896 // hence record the time we were connected last 6897 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6898 if (config != null) { 6899 config.lastDisconnected = System.currentTimeMillis(); 6900 if (config.ephemeral) { 6901 // Remove ephemeral WifiConfigurations from file 6902 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6903 } 6904 } 6905 } 6906 } 6907 6908 void noteWifiDisabledWhileAssociated() { 6909 // We got disabled by user while we were associated, make note of it 6910 int rssi = mWifiInfo.getRssi(); 6911 WifiConfiguration config = getCurrentWifiConfiguration(); 6912 if (getCurrentState() == mConnectedState 6913 && rssi != WifiInfo.INVALID_RSSI 6914 && config != null) { 6915 boolean is24GHz = mWifiInfo.is24GHz(); 6916 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 6917 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 6918 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 6919 || (!is24GHz && mWifiInfo.getRssi() 6920 < mWifiConfigStore.thresholdQualifiedRssi5.get()); 6921 boolean isHighRSSI = (is24GHz && rssi 6922 >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 6923 || (!is24GHz && mWifiInfo.getRssi() 6924 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 6925 if (isBadRSSI) { 6926 // Take note that we got disabled while RSSI was Bad 6927 config.numUserTriggeredWifiDisableLowRSSI++; 6928 } else if (isLowRSSI) { 6929 // Take note that we got disabled while RSSI was Low 6930 config.numUserTriggeredWifiDisableBadRSSI++; 6931 } else if (!isHighRSSI) { 6932 // Take note that we got disabled while RSSI was Not high 6933 config.numUserTriggeredWifiDisableNotHighRSSI++; 6934 } 6935 } 6936 } 6937 6938 WifiConfiguration getCurrentWifiConfiguration() { 6939 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6940 return null; 6941 } 6942 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6943 } 6944 6945 ScanResult getCurrentScanResult() { 6946 WifiConfiguration config = getCurrentWifiConfiguration(); 6947 if (config == null) { 6948 return null; 6949 } 6950 String BSSID = mWifiInfo.getBSSID(); 6951 if (BSSID == null) { 6952 BSSID = mTargetRoamBSSID; 6953 } 6954 ScanDetailCache scanDetailCache = 6955 mWifiConfigStore.getScanDetailCache(config); 6956 6957 if (scanDetailCache == null) { 6958 return null; 6959 } 6960 6961 return scanDetailCache.get(BSSID); 6962 } 6963 6964 String getCurrentBSSID() { 6965 if (linkDebouncing) { 6966 return null; 6967 } 6968 return mLastBssid; 6969 } 6970 6971 class ConnectModeState extends State { 6972 6973 @Override 6974 public void enter() { 6975 connectScanningService(); 6976 } 6977 6978 @Override 6979 public boolean processMessage(Message message) { 6980 WifiConfiguration config; 6981 int netId; 6982 boolean ok; 6983 boolean didDisconnect; 6984 String bssid; 6985 String ssid; 6986 NetworkUpdateResult result; 6987 logStateAndMessage(message, this); 6988 6989 switch (message.what) { 6990 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6991 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6992 didBlackListBSSID = false; 6993 bssid = (String) message.obj; 6994 if (bssid == null || TextUtils.isEmpty(bssid)) { 6995 // If BSSID is null, use the target roam BSSID 6996 bssid = mTargetRoamBSSID; 6997 } 6998 if (bssid != null) { 6999 // If we have a BSSID, tell configStore to black list it 7000 synchronized(mScanResultCache) { 7001 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 7002 (mLastNetworkId, bssid, false); 7003 } 7004 } 7005 7006 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 7007 WifiConfiguration.NetworkSelectionStatus 7008 .DISABLED_ASSOCIATION_REJECTION); 7009 7010 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 7011 break; 7012 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7013 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 7014 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 7015 if (mTargetNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7016 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 7017 WifiConfiguration.NetworkSelectionStatus 7018 .DISABLED_AUTHENTICATION_FAILURE); 7019 } 7020 break; 7021 case WifiMonitor.SSID_TEMP_DISABLED: 7022 Log.e(TAG, "Supplicant SSID temporary disabled:" 7023 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 7024 mWifiConfigStore.updateNetworkSelectionStatus( 7025 message.arg1, 7026 WifiConfiguration.NetworkSelectionStatus 7027 .DISABLED_AUTHENTICATION_FAILURE); 7028 break; 7029 case WifiMonitor.SSID_REENABLED: 7030 Log.d(TAG, "Supplicant SSID reenable:" 7031 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 7032 // Do not re-enable it in Quality Network Selection since framework has its own 7033 // Algorithm of disable/enable 7034 break; 7035 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7036 SupplicantState state = handleSupplicantStateChange(message); 7037 // A driver/firmware hang can now put the interface in a down state. 7038 // We detect the interface going down and recover from it 7039 if (!SupplicantState.isDriverActive(state)) { 7040 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7041 handleNetworkDisconnect(); 7042 } 7043 log("Detected an interface down, restart driver"); 7044 transitionTo(mDriverStoppedState); 7045 sendMessage(CMD_START_DRIVER); 7046 break; 7047 } 7048 7049 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7050 // when authentication times out after a successful connection, 7051 // we can figure this from the supplicant state. If supplicant 7052 // state is DISCONNECTED, but the mNetworkInfo says we are not 7053 // disconnected, we need to handle a disconnection 7054 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7055 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7056 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7057 handleNetworkDisconnect(); 7058 transitionTo(mDisconnectedState); 7059 } 7060 7061 // If we have COMPLETED a connection to a BSSID, start doing 7062 // DNAv4/DNAv6 -style probing for on-link neighbors of 7063 // interest (e.g. routers); harmless if none are configured. 7064 if (state == SupplicantState.COMPLETED) { 7065 mIpManager.confirmConfiguration(); 7066 } 7067 break; 7068 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7069 if (message.arg1 == 1) { 7070 mWifiNative.disconnect(); 7071 mTemporarilyDisconnectWifi = true; 7072 } else { 7073 mWifiNative.reconnect(); 7074 mTemporarilyDisconnectWifi = false; 7075 } 7076 break; 7077 case CMD_ADD_OR_UPDATE_NETWORK: 7078 // Only the current foreground user can modify networks. 7079 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7080 loge("Only the current foreground user can modify networks " 7081 + " currentUserId=" + mCurrentUserId 7082 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7083 replyToMessage(message, message.what, FAILURE); 7084 break; 7085 } 7086 7087 config = (WifiConfiguration) message.obj; 7088 7089 if (!recordUidIfAuthorized(config, message.sendingUid, 7090 /* onlyAnnotate */ false)) { 7091 logw("Not authorized to update network " 7092 + " config=" + config.SSID 7093 + " cnid=" + config.networkId 7094 + " uid=" + message.sendingUid); 7095 replyToMessage(message, message.what, FAILURE); 7096 break; 7097 } 7098 7099 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7100 if (res < 0) { 7101 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7102 } else { 7103 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7104 if (curConfig != null && config != null) { 7105 if (curConfig.priority < config.priority 7106 && config.status == WifiConfiguration.Status.ENABLED) { 7107 // Interpret this as a connect attempt 7108 // Set the last selected configuration so as to allow the system to 7109 // stick the last user choice without persisting the choice 7110 mWifiConfigStore.setAndEnableLastSelectedConfiguration(res); 7111 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7112 boolean persist = mWifiConfigStore 7113 .checkConfigOverridePermission(message.sendingUid); 7114 mWifiQualifiedNetworkSelector 7115 .userSelectNetwork(res, persist); 7116 7117 // Remember time of last connection attempt 7118 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7119 //Create clearcut connection event of type USER_SELECTED 7120 mWifiMetrics.startConnectionEvent(mWifiInfo, 7121 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7122 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7123 7124 // As a courtesy to the caller, trigger a scan now 7125 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7126 } 7127 } 7128 } 7129 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7130 break; 7131 case CMD_REMOVE_NETWORK: 7132 // Only the current foreground user can modify networks. 7133 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7134 loge("Only the current foreground user can modify networks " 7135 + " currentUserId=" + mCurrentUserId 7136 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7137 replyToMessage(message, message.what, FAILURE); 7138 break; 7139 } 7140 netId = message.arg1; 7141 7142 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7143 /* onlyAnnotate */ false)) { 7144 logw("Not authorized to remove network " 7145 + " cnid=" + netId 7146 + " uid=" + message.sendingUid); 7147 replyToMessage(message, message.what, FAILURE); 7148 break; 7149 } 7150 7151 ok = mWifiConfigStore.removeNetwork(message.arg1); 7152 if (!ok) { 7153 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7154 } 7155 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7156 break; 7157 case CMD_ENABLE_NETWORK: 7158 // Only the current foreground user can modify networks. 7159 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7160 loge("Only the current foreground user can modify networks " 7161 + " currentUserId=" + mCurrentUserId 7162 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7163 replyToMessage(message, message.what, FAILURE); 7164 break; 7165 } 7166 7167 boolean disableOthers = message.arg2 == 1; 7168 netId = message.arg1; 7169 config = mWifiConfigStore.getWifiConfiguration(netId); 7170 if (config == null) { 7171 loge("No network with id = " + netId); 7172 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7173 replyToMessage(message, message.what, FAILURE); 7174 break; 7175 } 7176 7177 // disable other only means select this network, does not mean all other 7178 // networks need to be disabled 7179 if (disableOthers) { 7180 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7181 // Remember time of last connection attempt 7182 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7183 mWifiMetrics.startConnectionEvent(mWifiInfo, 7184 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7185 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7186 } 7187 // Cancel auto roam requests 7188 autoRoamSetBSSID(netId, "any"); 7189 7190 int uid = message.sendingUid; 7191 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7192 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7193 if (!ok) { 7194 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7195 } else if (disableOthers) { 7196 mTargetNetworkId = netId; 7197 } 7198 7199 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7200 break; 7201 case CMD_ENABLE_ALL_NETWORKS: 7202 long time = android.os.SystemClock.elapsedRealtime(); 7203 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7204 mWifiConfigStore.enableAllNetworks(); 7205 mLastEnableAllNetworksTime = time; 7206 } 7207 break; 7208 case WifiManager.DISABLE_NETWORK: 7209 if (mWifiConfigStore.updateNetworkSelectionStatus(message.arg1, 7210 WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WIFI_MANAGER)) { 7211 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7212 } else { 7213 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7214 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7215 WifiManager.ERROR); 7216 } 7217 break; 7218 case CMD_DISABLE_EPHEMERAL_NETWORK: 7219 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7220 if (config != null) { 7221 if (config.networkId == mLastNetworkId) { 7222 // Disconnect and let autojoin reselect a new network 7223 sendMessage(CMD_DISCONNECT); 7224 } 7225 } 7226 break; 7227 case CMD_BLACKLIST_NETWORK: 7228 mWifiConfigStore.blackListBssid((String) message.obj); 7229 break; 7230 case CMD_CLEAR_BLACKLIST: 7231 mWifiConfigStore.clearBssidBlacklist(); 7232 break; 7233 case CMD_SAVE_CONFIG: 7234 ok = mWifiConfigStore.saveConfig(); 7235 7236 if (DBG) logd("did save config " + ok); 7237 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7238 7239 // Inform the backup manager about a data change 7240 IBackupManager ibm = IBackupManager.Stub.asInterface( 7241 mFacade.getService(Context.BACKUP_SERVICE)); 7242 if (ibm != null) { 7243 try { 7244 ibm.dataChanged("com.android.providers.settings"); 7245 } catch (Exception e) { 7246 // Try again later 7247 } 7248 } 7249 break; 7250 case CMD_GET_CONFIGURED_NETWORKS: 7251 replyToMessage(message, message.what, 7252 mWifiConfigStore.getConfiguredNetworks()); 7253 break; 7254 case WifiMonitor.SUP_REQUEST_IDENTITY: 7255 int networkId = message.arg2; 7256 boolean identitySent = false; 7257 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7258 7259 if (targetWificonfiguration != null 7260 && targetWificonfiguration.enterpriseConfig != null) { 7261 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7262 } 7263 7264 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7265 if (targetWificonfiguration != null 7266 && targetWificonfiguration.networkId == networkId 7267 && targetWificonfiguration.allowedKeyManagement 7268 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7269 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7270 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7271 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7272 TelephonyManager tm = (TelephonyManager) 7273 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7274 if (tm != null) { 7275 String imsi = tm.getSubscriberId(); 7276 String mccMnc = ""; 7277 7278 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7279 mccMnc = tm.getSimOperator(); 7280 7281 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7282 7283 if (!identity.isEmpty()) { 7284 mWifiNative.simIdentityResponse(networkId, identity); 7285 identitySent = true; 7286 } 7287 } 7288 } 7289 if (!identitySent) { 7290 // Supplicant lacks credentials to connect to that network, hence black list 7291 ssid = (String) message.obj; 7292 if (targetWificonfiguration != null && ssid != null 7293 && targetWificonfiguration.SSID != null 7294 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7295 mWifiConfigStore.updateNetworkSelectionStatus(targetWificonfiguration, 7296 WifiConfiguration.NetworkSelectionStatus 7297 .DISABLED_AUTHENTICATION_NO_CREDENTIALS); 7298 } 7299 // Disconnect now, as we don't have any way to fullfill 7300 // the supplicant request. 7301 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 7302 WifiConfiguration.INVALID_NETWORK_ID); 7303 mWifiNative.disconnect(); 7304 } 7305 break; 7306 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7307 logd("Received SUP_REQUEST_SIM_AUTH"); 7308 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7309 if (requestData != null) { 7310 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7311 handleGsmAuthRequest(requestData); 7312 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7313 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7314 handle3GAuthRequest(requestData); 7315 } 7316 } else { 7317 loge("Invalid sim auth request"); 7318 } 7319 break; 7320 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7321 replyToMessage(message, message.what, 7322 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7323 break; 7324 case CMD_GET_MATCHING_CONFIG: 7325 replyToMessage(message, message.what, 7326 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7327 break; 7328 /* Do a redundant disconnect without transition */ 7329 case CMD_DISCONNECT: 7330 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7331 (WifiConfiguration.INVALID_NETWORK_ID); 7332 mWifiNative.disconnect(); 7333 break; 7334 case CMD_RECONNECT: 7335 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false); 7336 break; 7337 case CMD_REASSOCIATE: 7338 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7339 mWifiMetrics.startConnectionEvent(mWifiInfo); 7340 mWifiNative.reassociate(); 7341 break; 7342 case CMD_RELOAD_TLS_AND_RECONNECT: 7343 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7344 logd("Reconnecting to give a chance to un-connected TLS networks"); 7345 mWifiNative.disconnect(); 7346 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7347 mWifiMetrics.startConnectionEvent(mWifiInfo); 7348 mWifiNative.reconnect(); 7349 } 7350 break; 7351 case CMD_AUTO_ROAM: 7352 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7353 return HANDLED; 7354 case CMD_AUTO_CONNECT: 7355 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7356 * associated status to the STATUS command but somehow-someplace still thinks 7357 * it is associated and thus will ignore select/reconnect command with 7358 * following message: 7359 * "Already associated with the selected network - do nothing" 7360 * 7361 * Hence, sends a disconnect to supplicant first. 7362 */ 7363 didDisconnect = false; 7364 if (getCurrentState() != mDisconnectedState) { 7365 /** Supplicant will ignore the reconnect if we are currently associated, 7366 * hence trigger a disconnect 7367 */ 7368 didDisconnect = true; 7369 mWifiNative.disconnect(); 7370 } 7371 7372 /* connect command coming from auto-join */ 7373 netId = message.arg1; 7374 mTargetNetworkId = netId; 7375 mTargetRoamBSSID = (String) message.obj; 7376 config = mWifiConfigStore.getWifiConfiguration(netId); 7377 logd("CMD_AUTO_CONNECT sup state " 7378 + mSupplicantStateTracker.getSupplicantStateName() 7379 + " my state " + getCurrentState().getName() 7380 + " nid=" + Integer.toString(netId) 7381 + " roam=" + Boolean.toString(mAutoRoaming)); 7382 if (config == null) { 7383 loge("AUTO_CONNECT and no config, bail out..."); 7384 break; 7385 } 7386 7387 /* Make sure we cancel any previous roam request */ 7388 setTargetBssid(config, mTargetRoamBSSID); 7389 7390 /* Save the network config */ 7391 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7392 + " nid=" + Integer.toString(netId)); 7393 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7394 netId = result.getNetworkId(); 7395 logd("CMD_AUTO_CONNECT did save config -> " 7396 + " nid=" + Integer.toString(netId)); 7397 7398 // Since we updated the config,read it back from config store: 7399 config = mWifiConfigStore.getWifiConfiguration(netId); 7400 if (config == null) { 7401 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7402 break; 7403 } 7404 if (netId != config.networkId) { 7405 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7406 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7407 break; 7408 } 7409 7410 if (deferForUserInput(message, netId, false)) { 7411 break; 7412 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7413 WifiConfiguration.USER_BANNED) { 7414 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7415 WifiManager.NOT_AUTHORIZED); 7416 break; 7417 } 7418 7419 // Make sure the network is enabled, since supplicant will not reenable it 7420 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7421 7422 // If we're autojoining a network that the user or an app explicitly selected, 7423 // keep track of the UID that selected it. 7424 // TODO(b/26786318): Keep track of the lastSelectedConfiguration and the 7425 // lastConnectUid on a per-user basis. 7426 int lastConnectUid = WifiConfiguration.UNKNOWN_UID; 7427 if (mWifiConfigStore.isLastSelectedConfiguration(config) 7428 && UserHandle.getUserId(config.lastConnectUid) == mCurrentUserId) { 7429 lastConnectUid = config.lastConnectUid; 7430 } 7431 7432 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7433 lastConnectUid) && mWifiNative.reconnect()) { 7434 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7435 mWifiMetrics.startConnectionEvent(mWifiInfo, 7436 WifiMetricsProto.ConnectionEvent.ROAM_UNRELATED); 7437 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7438 config = mWifiConfigStore.getWifiConfiguration(netId); 7439 if (config != null 7440 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7441 // If we autojoined a different config than the user selected one, 7442 // it means we could not see the last user selection, 7443 // or that the last user selection was faulty and ended up blacklisted 7444 // for some reason (in which case the user is notified with an error 7445 // message in the Wifi picker), and thus we managed to auto-join away 7446 // from the selected config. -> in that case we need to forget 7447 // the selection because we don't want to abruptly switch back to it. 7448 // 7449 // Note that the user selection is also forgotten after a period of time 7450 // during which the device has been disconnected. 7451 // The default value is 30 minutes : see the code path at bottom of 7452 // setScanResults() function. 7453 mWifiConfigStore. 7454 setAndEnableLastSelectedConfiguration( 7455 WifiConfiguration.INVALID_NETWORK_ID); 7456 } 7457 mAutoRoaming = false; 7458 if (isRoaming() || linkDebouncing) { 7459 transitionTo(mRoamingState); 7460 } else if (didDisconnect) { 7461 transitionTo(mDisconnectingState); 7462 } else { 7463 /* Already in disconnected state, nothing to change */ 7464 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7465 int delay = 60 * 1000; 7466 if (VDBG) { 7467 logd("Starting PNO alarm: " + delay); 7468 } 7469 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7470 System.currentTimeMillis() + delay, 7471 mPnoIntent); 7472 } 7473 mRestartAutoJoinOffloadCounter++; 7474 } 7475 } else { 7476 loge("Failed to connect config: " + config + " netId: " + netId); 7477 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7478 WifiManager.ERROR); 7479 break; 7480 } 7481 break; 7482 case CMD_REMOVE_APP_CONFIGURATIONS: 7483 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7484 break; 7485 case CMD_REMOVE_USER_CONFIGURATIONS: 7486 mWifiConfigStore.removeNetworksForUser(message.arg1); 7487 break; 7488 case WifiManager.CONNECT_NETWORK: 7489 // Only the current foreground user can modify networks. 7490 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7491 loge("Only the current foreground user can modify networks " 7492 + " currentUserId=" + mCurrentUserId 7493 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7494 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7495 WifiManager.NOT_AUTHORIZED); 7496 break; 7497 } 7498 7499 /** 7500 * The connect message can contain a network id passed as arg1 on message or 7501 * or a config passed as obj on message. 7502 * For a new network, a config is passed to create and connect. 7503 * For an existing network, a network id is passed 7504 */ 7505 netId = message.arg1; 7506 config = (WifiConfiguration) message.obj; 7507 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7508 boolean updatedExisting = false; 7509 7510 /* Save the network config */ 7511 if (config != null) { 7512 // When connecting to an access point, WifiStateMachine wants to update the 7513 // relevant config with administrative data. This update should not be 7514 // considered a 'real' update, therefore lockdown by Device Owner must be 7515 // disregarded. 7516 if (!recordUidIfAuthorized(config, message.sendingUid, 7517 /* onlyAnnotate */ true)) { 7518 logw("Not authorized to update network " 7519 + " config=" + config.SSID 7520 + " cnid=" + config.networkId 7521 + " uid=" + message.sendingUid); 7522 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7523 WifiManager.NOT_AUTHORIZED); 7524 break; 7525 } 7526 7527 String configKey = config.configKey(true /* allowCached */); 7528 WifiConfiguration savedConfig = 7529 mWifiConfigStore.getWifiConfiguration(configKey); 7530 if (savedConfig != null) { 7531 // There is an existing config with this netId, but it wasn't exposed 7532 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7533 // getConfiguredNetworks). Remove those bits and update the config. 7534 config = savedConfig; 7535 logd("CONNECT_NETWORK updating existing config with id=" + 7536 config.networkId + " configKey=" + configKey); 7537 config.ephemeral = false; 7538 mWifiConfigStore.updateNetworkSelectionStatus(config, 7539 WifiConfiguration.NetworkSelectionStatus 7540 .NETWORK_SELECTION_ENABLE); 7541 updatedExisting = true; 7542 } 7543 7544 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7545 netId = result.getNetworkId(); 7546 } 7547 config = mWifiConfigStore.getWifiConfiguration(netId); 7548 7549 if (config == null) { 7550 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7551 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7552 + getCurrentState().getName()); 7553 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7554 WifiManager.ERROR); 7555 break; 7556 } 7557 mTargetNetworkId = netId; 7558 autoRoamSetBSSID(netId, "any"); 7559 7560 if (message.sendingUid == Process.WIFI_UID 7561 || message.sendingUid == Process.SYSTEM_UID) { 7562 // As a sanity measure, clear the BSSID in the supplicant network block. 7563 // If system or Wifi Settings want to connect, they will not 7564 // specify the BSSID. 7565 // If an app however had added a BSSID to this configuration, and the BSSID 7566 // was wrong, Then we would forever fail to connect until that BSSID 7567 // is cleaned up. 7568 clearConfigBSSID(config, "CONNECT_NETWORK"); 7569 } 7570 7571 if (deferForUserInput(message, netId, true)) { 7572 break; 7573 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7574 WifiConfiguration.USER_BANNED) { 7575 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7576 WifiManager.NOT_AUTHORIZED); 7577 break; 7578 } 7579 7580 mAutoRoaming = false; 7581 7582 /* Tell network selection the user did try to connect to that network if from 7583 settings */ 7584 boolean persist = 7585 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7586 7587 7588 mWifiConfigStore.setAndEnableLastSelectedConfiguration(netId); 7589 mWifiQualifiedNetworkSelector.userSelectNetwork(netId, persist); 7590 didDisconnect = false; 7591 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7592 && mLastNetworkId != netId) { 7593 /** Supplicant will ignore the reconnect if we are currently associated, 7594 * hence trigger a disconnect 7595 */ 7596 didDisconnect = true; 7597 mWifiNative.disconnect(); 7598 } 7599 7600 // Make sure the network is enabled, since supplicant will not reenable it 7601 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7602 7603 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7604 message.sendingUid) && mWifiNative.reconnect()) { 7605 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7606 mWifiMetrics.startConnectionEvent(mWifiInfo, 7607 WifiMetricsProto.ConnectionEvent.ROAM_USER_SELECTED); 7608 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7609 7610 /* The state tracker handles enabling networks upon completion/failure */ 7611 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7612 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7613 if (didDisconnect) { 7614 /* Expect a disconnection from the old connection */ 7615 transitionTo(mDisconnectingState); 7616 } else if (updatedExisting && getCurrentState() == mConnectedState && 7617 getCurrentWifiConfiguration().networkId == netId) { 7618 // Update the current set of network capabilities, but stay in the 7619 // current state. 7620 updateCapabilities(config); 7621 } else { 7622 /** 7623 * Directly go to disconnected state where we 7624 * process the connection events from supplicant 7625 */ 7626 transitionTo(mDisconnectedState); 7627 } 7628 } else { 7629 loge("Failed to connect config: " + config + " netId: " + netId); 7630 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7631 WifiManager.ERROR); 7632 break; 7633 } 7634 break; 7635 case WifiManager.SAVE_NETWORK: 7636 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7637 // Fall thru 7638 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7639 // Only the current foreground user can modify networks. 7640 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7641 loge("Only the current foreground user can modify networks " 7642 + " currentUserId=" + mCurrentUserId 7643 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7644 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7645 WifiManager.NOT_AUTHORIZED); 7646 break; 7647 } 7648 7649 lastSavedConfigurationAttempt = null; // Used for debug 7650 config = (WifiConfiguration) message.obj; 7651 if (config == null) { 7652 loge("ERROR: SAVE_NETWORK with null configuration" 7653 + mSupplicantStateTracker.getSupplicantStateName() 7654 + " my state " + getCurrentState().getName()); 7655 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7656 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7657 WifiManager.ERROR); 7658 break; 7659 } 7660 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7661 int nid = config.networkId; 7662 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7663 + " config=" + config.SSID 7664 + " nid=" + config.networkId 7665 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7666 + " my state " + getCurrentState().getName()); 7667 7668 // Only record the uid if this is user initiated 7669 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7670 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7671 /* onlyAnnotate */ false)) { 7672 logw("Not authorized to update network " 7673 + " config=" + config.SSID 7674 + " cnid=" + config.networkId 7675 + " uid=" + message.sendingUid); 7676 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7677 WifiManager.NOT_AUTHORIZED); 7678 break; 7679 } 7680 7681 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7682 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7683 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7684 if (result.hasIpChanged()) { 7685 // The currently connection configuration was changed 7686 // We switched from DHCP to static or from static to DHCP, or the 7687 // static IP address has changed. 7688 log("Reconfiguring IP on connection"); 7689 // TODO: clear addresses and disable IPv6 7690 // to simplify obtainingIpState. 7691 transitionTo(mObtainingIpState); 7692 } 7693 if (result.hasProxyChanged()) { 7694 log("Reconfiguring proxy on connection"); 7695 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7696 } 7697 } 7698 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7699 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7700 7701 if (VDBG) { 7702 logd("Success save network nid=" 7703 + Integer.toString(result.getNetworkId())); 7704 } 7705 7706 synchronized(mScanResultCache) { 7707 /** 7708 * If the command comes from WifiManager, then 7709 * tell autojoin the user did try to modify and save that network, 7710 * and interpret the SAVE_NETWORK as a request to connect 7711 */ 7712 boolean user = message.what == WifiManager.SAVE_NETWORK; 7713 7714 // Did this connect come from settings 7715 boolean persistConnect = 7716 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7717 7718 if (user) { 7719 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7720 mWifiConfigStore.writeKnownNetworkHistory(); 7721 } 7722 //Fixme, CMD_AUTO_SAVE_NETWORK can be cleaned 7723 mWifiQualifiedNetworkSelector.userSelectNetwork( 7724 result.getNetworkId(), persistConnect); 7725 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false); 7726 } 7727 } else { 7728 loge("Failed to save network"); 7729 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7730 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7731 WifiManager.ERROR); 7732 } 7733 break; 7734 case WifiManager.FORGET_NETWORK: 7735 // Only the current foreground user can modify networks. 7736 if (UserHandle.getUserId(message.sendingUid) != mCurrentUserId) { 7737 loge("Only the current foreground user can modify networks " 7738 + " currentUserId=" + mCurrentUserId 7739 + " sendingUserId=" + UserHandle.getUserId(message.sendingUid)); 7740 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7741 WifiManager.NOT_AUTHORIZED); 7742 break; 7743 } 7744 7745 // Debug only, remember last configuration that was forgotten 7746 WifiConfiguration toRemove 7747 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7748 if (toRemove == null) { 7749 lastForgetConfigurationAttempt = null; 7750 } else { 7751 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7752 } 7753 // check that the caller owns this network 7754 netId = message.arg1; 7755 7756 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7757 /* onlyAnnotate */ false)) { 7758 logw("Not authorized to forget network " 7759 + " cnid=" + netId 7760 + " uid=" + message.sendingUid); 7761 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7762 WifiManager.NOT_AUTHORIZED); 7763 break; 7764 } 7765 7766 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7767 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7768 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7769 (WifiConfiguration) message.obj); 7770 } else { 7771 loge("Failed to forget network"); 7772 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7773 WifiManager.ERROR); 7774 } 7775 break; 7776 case WifiManager.START_WPS: 7777 WpsInfo wpsInfo = (WpsInfo) message.obj; 7778 WpsResult wpsResult; 7779 switch (wpsInfo.setup) { 7780 case WpsInfo.PBC: 7781 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7782 break; 7783 case WpsInfo.KEYPAD: 7784 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7785 break; 7786 case WpsInfo.DISPLAY: 7787 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7788 break; 7789 default: 7790 wpsResult = new WpsResult(Status.FAILURE); 7791 loge("Invalid setup for WPS"); 7792 break; 7793 } 7794 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7795 (WifiConfiguration.INVALID_NETWORK_ID); 7796 if (wpsResult.status == Status.SUCCESS) { 7797 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7798 transitionTo(mWpsRunningState); 7799 } else { 7800 loge("Failed to start WPS with config " + wpsInfo.toString()); 7801 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7802 } 7803 break; 7804 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7805 if (DBG) log("Network connection established"); 7806 mLastNetworkId = message.arg1; 7807 mLastBssid = (String) message.obj; 7808 7809 mWifiInfo.setBSSID(mLastBssid); 7810 mWifiInfo.setNetworkId(mLastNetworkId); 7811 7812 sendNetworkStateChangeBroadcast(mLastBssid); 7813 transitionTo(mObtainingIpState); 7814 break; 7815 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7816 // Calling handleNetworkDisconnect here is redundant because we might already 7817 // have called it when leaving L2ConnectedState to go to disconnecting state 7818 // or thru other path 7819 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7820 // if they are valid, and only in this case call handleNEtworkDisconnect, 7821 // TODO: this should be fixed for a L MR release 7822 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7823 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7824 // at the chip etc... 7825 if (DBG) log("ConnectModeState: Network connection lost "); 7826 handleNetworkDisconnect(); 7827 transitionTo(mDisconnectedState); 7828 break; 7829 case CMD_PNO_NETWORK_FOUND: 7830 processPnoNetworkFound((ScanResult[])message.obj); 7831 break; 7832 default: 7833 return NOT_HANDLED; 7834 } 7835 return HANDLED; 7836 } 7837 } 7838 7839 private void updateCapabilities(WifiConfiguration config) { 7840 NetworkCapabilities networkCapabilities = new NetworkCapabilities(mDfltNetworkCapabilities); 7841 if (config != null) { 7842 if (config.ephemeral) { 7843 networkCapabilities.removeCapability( 7844 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7845 } else { 7846 networkCapabilities.addCapability( 7847 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7848 } 7849 networkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7850 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7851 if (mWifiConfigStore.isOSUNetwork(config)) { 7852 Log.d(TAG, "Removing internet cap from " + config.SSID); 7853 //networkCapabilities.removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 7854 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL); 7855 } 7856 } 7857 mNetworkAgent.sendNetworkCapabilities(networkCapabilities); 7858 } 7859 7860 private class WifiNetworkAgent extends NetworkAgent { 7861 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7862 NetworkCapabilities nc, LinkProperties lp, int score) { 7863 super(l, c, TAG, ni, nc, lp, score); 7864 } 7865 protected void unwanted() { 7866 // Ignore if we're not the current networkAgent. 7867 if (this != mNetworkAgent) return; 7868 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7869 + Integer.toString(mWifiInfo.score)); 7870 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7871 } 7872 7873 @Override 7874 protected void networkStatus(int status) { 7875 if (this != mNetworkAgent) return; 7876 if (status == NetworkAgent.INVALID_NETWORK) { 7877 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7878 + Integer.toString(mWifiInfo.score)); 7879 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7880 } else if (status == NetworkAgent.VALID_NETWORK) { 7881 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7882 + Integer.toString(mWifiInfo.score)); 7883 doNetworkStatus(status); 7884 } 7885 } 7886 7887 @Override 7888 protected void saveAcceptUnvalidated(boolean accept) { 7889 if (this != mNetworkAgent) return; 7890 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7891 } 7892 7893 @Override 7894 protected void startPacketKeepalive(Message msg) { 7895 WifiStateMachine.this.sendMessage( 7896 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7897 } 7898 7899 @Override 7900 protected void stopPacketKeepalive(Message msg) { 7901 WifiStateMachine.this.sendMessage( 7902 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7903 } 7904 7905 @Override 7906 protected void setSignalStrengthThresholds(int[] thresholds) { 7907 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 7908 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 7909 // MAX_VALUE at the start/end of the thresholds array if necessary. 7910 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 7911 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 7912 // re-arm the hardware event. This needs to be done on the state machine thread to 7913 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 7914 // sent in the NetworkCapabilities) must be the one received from the hardware event 7915 // received, or we might skip callbacks. 7916 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 7917 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 7918 if (thresholds.length == 0) { 7919 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7920 mWifiInfo.getRssi()); 7921 return; 7922 } 7923 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 7924 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 7925 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 7926 Arrays.sort(rssiVals); 7927 byte[] rssiRange = new byte[rssiVals.length]; 7928 for (int i = 0; i < rssiVals.length; i++) { 7929 int val = rssiVals[i]; 7930 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 7931 rssiRange[i] = (byte) val; 7932 } else { 7933 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 7934 + Arrays.toString(rssiVals)); 7935 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7936 mWifiInfo.getRssi()); 7937 return; 7938 } 7939 } 7940 // TODO: Do we quash rssi values in this sorted array which are very close? 7941 mRssiRanges = rssiRange; 7942 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 7943 mWifiInfo.getRssi()); 7944 } 7945 7946 @Override 7947 protected void preventAutomaticReconnect() { 7948 if (this != mNetworkAgent) return; 7949 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 7950 } 7951 } 7952 7953 void unwantedNetwork(int reason) { 7954 sendMessage(CMD_UNWANTED_NETWORK, reason); 7955 } 7956 7957 void doNetworkStatus(int status) { 7958 sendMessage(CMD_NETWORK_STATUS, status); 7959 } 7960 7961 // rfc4186 & rfc4187: 7962 // create Permanent Identity base on IMSI, 7963 // identity = usernam@realm 7964 // with username = prefix | IMSI 7965 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7966 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7967 String mcc; 7968 String mnc; 7969 String prefix; 7970 7971 if (imsi == null || imsi.isEmpty()) 7972 return ""; 7973 7974 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7975 prefix = "1"; 7976 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7977 prefix = "0"; 7978 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7979 prefix = "6"; 7980 else // not a valide EapMethod 7981 return ""; 7982 7983 /* extract mcc & mnc from mccMnc */ 7984 if (mccMnc != null && !mccMnc.isEmpty()) { 7985 mcc = mccMnc.substring(0, 3); 7986 mnc = mccMnc.substring(3); 7987 if (mnc.length() == 2) 7988 mnc = "0" + mnc; 7989 } else { 7990 // extract mcc & mnc from IMSI, assume mnc size is 3 7991 mcc = imsi.substring(0, 3); 7992 mnc = imsi.substring(3, 6); 7993 } 7994 7995 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7996 } 7997 7998 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7999 if (config == null) 8000 return false; 8001 8002 // We are still seeing a fairly high power consumption triggered by autojoin scans 8003 // Hence do partial scans only for PSK configuration that are roamable since the 8004 // primary purpose of the partial scans is roaming. 8005 // Full badn scans with exponential backoff for the purpose or extended roaming and 8006 // network switching are performed unconditionally. 8007 ScanDetailCache scanDetailCache = 8008 mWifiConfigStore.getScanDetailCache(config); 8009 if (scanDetailCache == null 8010 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 8011 || scanDetailCache.size() > 6) { 8012 //return true but to not trigger the scan 8013 return true; 8014 } 8015 HashSet<Integer> freqs = mWifiConfigStore.makeChannelList(config, 8016 ONE_HOUR_MILLI, restrictChannelList); 8017 if (freqs != null && freqs.size() != 0) { 8018 //if (DBG) { 8019 logd("starting scan for " + config.configKey() + " with " + freqs); 8020 //} 8021 // Call wifi native to start the scan 8022 if (startScanNative( 8023 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, freqs)) { 8024 // Only count battery consumption if scan request is accepted 8025 noteScanStart(SCAN_ALARM_SOURCE, null); 8026 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8027 } else { 8028 // used for debug only, mark scan as failed 8029 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8030 } 8031 return true; 8032 } else { 8033 if (DBG) logd("no channels for " + config.configKey()); 8034 return false; 8035 } 8036 } 8037 8038 void clearCurrentConfigBSSID(String dbg) { 8039 // Clear the bssid in the current config's network block 8040 WifiConfiguration config = getCurrentWifiConfiguration(); 8041 if (config == null) 8042 return; 8043 clearConfigBSSID(config, dbg); 8044 } 8045 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8046 if (config == null) 8047 return; 8048 if (DBG) { 8049 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8050 + " config.NetworkSelectionStatus.mNetworkSelectionBSSID " 8051 + config.getNetworkSelectionStatus().getNetworkSelectionBSSID()); 8052 } 8053 config.getNetworkSelectionStatus().setNetworkSelectionBSSID("any"); 8054 if (DBG) { 8055 logd(dbg + " " + config.SSID 8056 + " nid=" + Integer.toString(config.networkId)); 8057 } 8058 mWifiConfigStore.saveWifiConfigBSSID(config); 8059 } 8060 8061 class L2ConnectedState extends State { 8062 @Override 8063 public void enter() { 8064 mRssiPollToken++; 8065 if (mEnableRssiPolling) { 8066 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8067 } 8068 if (mNetworkAgent != null) { 8069 loge("Have NetworkAgent when entering L2Connected"); 8070 setNetworkDetailedState(DetailedState.DISCONNECTED); 8071 } 8072 setNetworkDetailedState(DetailedState.CONNECTING); 8073 8074 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8075 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8076 } 8077 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8078 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8079 mLinkProperties, 60); 8080 8081 // We must clear the config BSSID, as the wifi chipset may decide to roam 8082 // from this point on and having the BSSID specified in the network block would 8083 // cause the roam to faile and the device to disconnect 8084 clearCurrentConfigBSSID("L2ConnectedState"); 8085 } 8086 8087 @Override 8088 public void exit() { 8089 mIpManager.stop(); 8090 8091 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8092 // Bug: 15347363 8093 // For paranoia's sake, call handleNetworkDisconnect 8094 // only if BSSID is null or last networkId 8095 // is not invalid. 8096 if (DBG) { 8097 StringBuilder sb = new StringBuilder(); 8098 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8099 if (mLastBssid !=null) { 8100 sb.append(" ").append(mLastBssid); 8101 } 8102 } 8103 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8104 handleNetworkDisconnect(); 8105 } 8106 } 8107 8108 @Override 8109 public boolean processMessage(Message message) { 8110 logStateAndMessage(message, this); 8111 8112 switch (message.what) { 8113 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8114 handlePreDhcpSetup(); 8115 break; 8116 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8117 handlePostDhcpSetup(); 8118 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 8119 if (DBG) log("DHCP successful"); 8120 mIpManager.updateWithDhcpResults( 8121 (DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 8122 // We advance to mConnectedState because IpManager will send back a 8123 // CMD_IPV4_PROVISIONING_SUCCESS message, which calls handleIPv4Success(), 8124 // which calls updateLinkProperties, which then sends 8125 // CMD_IP_CONFIGURATION_SUCCESSFUL. 8126 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 8127 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 8128 if (DBG) { 8129 int count = -1; 8130 WifiConfiguration config = getCurrentWifiConfiguration(); 8131 if (config != null) { 8132 count = config.getNetworkSelectionStatus().getDisableReasonCounter( 8133 WifiConfiguration.NetworkSelectionStatus 8134 .DISABLED_DHCP_FAILURE); 8135 } 8136 log("DHCP failure count=" + count); 8137 } 8138 mWifiMetrics.endConnectionEvent(0, 8139 WifiMetricsProto.ConnectionEvent.HLF_DHCP); 8140 mIpManager.updateWithDhcpResults(null, DhcpStateMachine.DHCP_FAILURE); 8141 // As above, we transition to mDisconnectingState via messages send back 8142 // from IpManager. 8143 } 8144 break; 8145 case CMD_IPV4_PROVISIONING_SUCCESS: 8146 handleIPv4Success((DhcpResults) message.obj, message.arg1); 8147 break; 8148 case CMD_IPV4_PROVISIONING_FAILURE: 8149 handleIPv4Failure(message.arg1); 8150 break; 8151 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8152 handleSuccessfulIpConfiguration(); 8153 mWifiMetrics.endConnectionEvent(0, WifiMetricsProto.ConnectionEvent.HLF_NONE); 8154 sendConnectedState(); 8155 transitionTo(mConnectedState); 8156 break; 8157 case CMD_IP_CONFIGURATION_LOST: 8158 // Get Link layer stats so that we get fresh tx packet counters. 8159 getWifiLinkLayerStats(true); 8160 handleIpConfigurationLost(); 8161 transitionTo(mDisconnectingState); 8162 break; 8163 case CMD_IP_REACHABILITY_LOST: 8164 if (DBG && message.obj != null) log((String) message.obj); 8165 handleIpReachabilityLost(); 8166 transitionTo(mDisconnectingState); 8167 break; 8168 case CMD_DISCONNECT: 8169 mWifiNative.disconnect(); 8170 transitionTo(mDisconnectingState); 8171 break; 8172 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8173 if (message.arg1 == 1) { 8174 mWifiNative.disconnect(); 8175 mTemporarilyDisconnectWifi = true; 8176 transitionTo(mDisconnectingState); 8177 } 8178 break; 8179 case CMD_SET_OPERATIONAL_MODE: 8180 if (message.arg1 != CONNECT_MODE) { 8181 sendMessage(CMD_DISCONNECT); 8182 deferMessage(message); 8183 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8184 noteWifiDisabledWhileAssociated(); 8185 } 8186 } 8187 mWifiConfigStore. 8188 setAndEnableLastSelectedConfiguration( 8189 WifiConfiguration.INVALID_NETWORK_ID); 8190 break; 8191 case CMD_SET_COUNTRY_CODE: 8192 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8193 deferMessage(message); 8194 break; 8195 case CMD_START_SCAN: 8196 if (DBG) { 8197 logd("CMD_START_SCAN source " + message.arg1 8198 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8199 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8200 + " targetRoamBSSID=" + mTargetRoamBSSID 8201 + " RSSI=" + mWifiInfo.getRssi()); 8202 } 8203 if (message.arg1 == SCAN_ALARM_SOURCE) { 8204 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8205 // not be processed) and restart the scan if neede 8206 if (!getEnableAutoJoinWhenAssociated()) { 8207 return HANDLED; 8208 } 8209 boolean shouldScan = mScreenOn; 8210 8211 if (!checkAndRestartDelayedScan(message.arg2, 8212 shouldScan, 8213 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8214 null, null)) { 8215 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8216 logd("L2Connected CMD_START_SCAN source " 8217 + message.arg1 8218 + " " + message.arg2 + ", " + mDelayedScanCounter 8219 + " -> obsolete"); 8220 return HANDLED; 8221 } 8222 if (mP2pConnected.get()) { 8223 logd("L2Connected CMD_START_SCAN source " 8224 + message.arg1 8225 + " " + message.arg2 + ", " + mDelayedScanCounter 8226 + " ignore because P2P is connected"); 8227 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8228 return HANDLED; 8229 } 8230 boolean tryFullBandScan = false; 8231 boolean restrictChannelList = false; 8232 long now_ms = System.currentTimeMillis(); 8233 if (DBG) { 8234 logd("CMD_START_SCAN with age=" 8235 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8236 + " interval=" + fullBandConnectedTimeIntervalMilli 8237 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8238 } 8239 if (mWifiInfo != null) { 8240 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8241 (now_ms - lastFullBandConnectedTimeMilli) 8242 > fullBandConnectedTimeIntervalMilli) { 8243 if (DBG) { 8244 logd("CMD_START_SCAN try full band scan age=" 8245 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8246 + " interval=" + fullBandConnectedTimeIntervalMilli 8247 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8248 } 8249 tryFullBandScan = true; 8250 } 8251 8252 if (mWifiInfo.txSuccessRate > 8253 mWifiConfigStore.maxTxPacketForFullScans 8254 || mWifiInfo.rxSuccessRate > 8255 mWifiConfigStore.maxRxPacketForFullScans) { 8256 // Too much traffic at the interface, hence no full band scan 8257 if (DBG) { 8258 logd("CMD_START_SCAN " + 8259 "prevent full band scan due to pkt rate"); 8260 } 8261 tryFullBandScan = false; 8262 } 8263 8264 if (mWifiInfo.txSuccessRate > 8265 mWifiConfigStore.maxTxPacketForPartialScans 8266 || mWifiInfo.rxSuccessRate > 8267 mWifiConfigStore.maxRxPacketForPartialScans) { 8268 // Don't scan if lots of packets are being sent 8269 restrictChannelList = true; 8270 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8271 if (DBG) { 8272 logd("CMD_START_SCAN source " + message.arg1 8273 + " ...and ignore scans" 8274 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8275 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8276 } 8277 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8278 return HANDLED; 8279 } 8280 } 8281 } 8282 8283 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8284 if (DBG) { 8285 logd("CMD_START_SCAN full=" + 8286 tryFullBandScan); 8287 } 8288 if (currentConfiguration != null) { 8289 if (fullBandConnectedTimeIntervalMilli 8290 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8291 // Sanity 8292 fullBandConnectedTimeIntervalMilli 8293 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8294 } 8295 if (tryFullBandScan) { 8296 lastFullBandConnectedTimeMilli = now_ms; 8297 if (fullBandConnectedTimeIntervalMilli 8298 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8299 // Increase the interval 8300 fullBandConnectedTimeIntervalMilli 8301 = fullBandConnectedTimeIntervalMilli 8302 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8303 8304 if (DBG) { 8305 logd("CMD_START_SCAN bump interval =" 8306 + fullBandConnectedTimeIntervalMilli); 8307 } 8308 } 8309 handleScanRequest( 8310 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8311 } else { 8312 if (!startScanForConfiguration( 8313 currentConfiguration, restrictChannelList)) { 8314 if (DBG) { 8315 logd("starting scan, " + 8316 " did not find channels -> full"); 8317 } 8318 lastFullBandConnectedTimeMilli = now_ms; 8319 if (fullBandConnectedTimeIntervalMilli 8320 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8321 // Increase the interval 8322 fullBandConnectedTimeIntervalMilli 8323 = fullBandConnectedTimeIntervalMilli 8324 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8325 8326 if (DBG) { 8327 logd("CMD_START_SCAN bump interval =" 8328 + fullBandConnectedTimeIntervalMilli); 8329 } 8330 } 8331 handleScanRequest( 8332 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8333 } 8334 } 8335 8336 } else { 8337 logd("CMD_START_SCAN : connected mode and no configuration"); 8338 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8339 } 8340 } else { 8341 // Not scan alarm source 8342 return NOT_HANDLED; 8343 } 8344 break; 8345 /* Ignore connection to same network */ 8346 case WifiManager.CONNECT_NETWORK: 8347 int netId = message.arg1; 8348 if (mWifiInfo.getNetworkId() == netId) { 8349 break; 8350 } 8351 return NOT_HANDLED; 8352 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8353 mWifiInfo.setBSSID((String) message.obj); 8354 mLastNetworkId = message.arg1; 8355 mWifiInfo.setNetworkId(mLastNetworkId); 8356 if(!mLastBssid.equals((String) message.obj)) { 8357 mLastBssid = (String) message.obj; 8358 sendNetworkStateChangeBroadcast(mLastBssid); 8359 } 8360 break; 8361 case CMD_RSSI_POLL: 8362 if (message.arg1 == mRssiPollToken) { 8363 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8364 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8365 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8366 if (stats != null) { 8367 // Sanity check the results provided by driver 8368 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8369 && (stats.rssi_mgmt == 0 8370 || stats.beacon_rx == 0)) { 8371 stats = null; 8372 } 8373 } 8374 // Get Info and continue polling 8375 fetchRssiLinkSpeedAndFrequencyNative(); 8376 calculateWifiScore(stats); 8377 } 8378 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8379 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8380 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8381 } else { 8382 // Polling has completed 8383 } 8384 break; 8385 case CMD_ENABLE_RSSI_POLL: 8386 cleanWifiScore(); 8387 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8388 mEnableRssiPolling = (message.arg1 == 1); 8389 } else { 8390 mEnableRssiPolling = false; 8391 } 8392 mRssiPollToken++; 8393 if (mEnableRssiPolling) { 8394 // First poll 8395 fetchRssiLinkSpeedAndFrequencyNative(); 8396 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8397 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8398 } 8399 break; 8400 case WifiManager.RSSI_PKTCNT_FETCH: 8401 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8402 fetchRssiLinkSpeedAndFrequencyNative(); 8403 info.rssi = mWifiInfo.getRssi(); 8404 fetchPktcntNative(info); 8405 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8406 break; 8407 case CMD_DELAYED_NETWORK_DISCONNECT: 8408 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8409 8410 // Ignore if we are not debouncing 8411 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8412 + message.arg1); 8413 return HANDLED; 8414 } else { 8415 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8416 + message.arg1); 8417 8418 linkDebouncing = false; 8419 // If we are still debouncing while this message comes, 8420 // it means we were not able to reconnect within the alloted time 8421 // = LINK_FLAPPING_DEBOUNCE_MSEC 8422 // and thus, trigger a real disconnect 8423 handleNetworkDisconnect(); 8424 transitionTo(mDisconnectedState); 8425 } 8426 break; 8427 case CMD_ASSOCIATED_BSSID: 8428 if ((String) message.obj == null) { 8429 logw("Associated command w/o BSSID"); 8430 break; 8431 } 8432 mLastBssid = (String) message.obj; 8433 if (mLastBssid != null 8434 && (mWifiInfo.getBSSID() == null 8435 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8436 mWifiInfo.setBSSID((String) message.obj); 8437 sendNetworkStateChangeBroadcast(mLastBssid); 8438 } 8439 break; 8440 case CMD_START_RSSI_MONITORING_OFFLOAD: 8441 case CMD_RSSI_THRESHOLD_BREACH: 8442 byte currRssi = (byte) message.arg1; 8443 processRssiThreshold(currRssi, message.what); 8444 break; 8445 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8446 stopRssiMonitoringOffload(); 8447 break; 8448 case CMD_RESET_SIM_NETWORKS: 8449 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8450 WifiConfiguration config = 8451 mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 8452 if (mWifiConfigStore.isSimConfig(config)) { 8453 mWifiNative.disconnect(); 8454 transitionTo(mDisconnectingState); 8455 } 8456 } 8457 /* allow parent state to reset data for other networks */ 8458 return NOT_HANDLED; 8459 default: 8460 return NOT_HANDLED; 8461 } 8462 8463 return HANDLED; 8464 } 8465 } 8466 8467 class ObtainingIpState extends State { 8468 @Override 8469 public void enter() { 8470 if (DBG) { 8471 String key = ""; 8472 if (getCurrentWifiConfiguration() != null) { 8473 key = getCurrentWifiConfiguration().configKey(); 8474 } 8475 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8476 + " " + key + " " 8477 + " roam=" + mAutoRoaming 8478 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8479 + " watchdog= " + obtainingIpWatchdogCount); 8480 } 8481 8482 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8483 // We might still be roaming 8484 linkDebouncing = false; 8485 8486 // Send event to CM & network change broadcast 8487 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8488 8489 // We must clear the config BSSID, as the wifi chipset may decide to roam 8490 // from this point on and having the BSSID specified in the network block would 8491 // cause the roam to fail and the device to disconnect. 8492 clearCurrentConfigBSSID("ObtainingIpAddress"); 8493 8494 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8495 if (isRoaming()) { 8496 renewDhcp(); 8497 } else { 8498 // Remove any IP address on the interface in case we're switching from static 8499 // IP configuration to DHCP. This is safe because if we get here when not 8500 // roaming, we don't have a usable address. 8501 clearIPv4Address(mInterfaceName); 8502 8503 // TODO: be better about static vs DHCP vs ... 8504 mIpManager.startProvisioning(); 8505 8506 startDhcp(); 8507 } 8508 obtainingIpWatchdogCount++; 8509 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8510 // Get Link layer stats so as we get fresh tx packet counters 8511 getWifiLinkLayerStats(true); 8512 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8513 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8514 } else { 8515 // stop any running dhcp before assigning static IP 8516 stopDhcp(); 8517 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8518 mLastNetworkId); 8519 if (config.ipAddress == null) { 8520 logd("Static IP lacks address"); 8521 sendMessage(CMD_STATIC_IP_FAILURE); 8522 } else { 8523 mIpManager.startProvisioning(config); 8524 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8525 ifcg.setLinkAddress(config.ipAddress); 8526 ifcg.setInterfaceUp(); 8527 try { 8528 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8529 if (DBG) log("Static IP configuration succeeded"); 8530 mIpManager.updateWithDhcpResults( 8531 new DhcpResults(config), CMD_STATIC_IP_SUCCESS); 8532 } catch (RemoteException re) { 8533 loge("Static IP configuration failed: " + re); 8534 mIpManager.updateWithDhcpResults(null, CMD_STATIC_IP_FAILURE); 8535 } catch (IllegalStateException e) { 8536 loge("Static IP configuration failed: " + e); 8537 mIpManager.updateWithDhcpResults(null, CMD_STATIC_IP_FAILURE); 8538 } 8539 } 8540 } 8541 } 8542 8543 @Override 8544 public boolean processMessage(Message message) { 8545 logStateAndMessage(message, this); 8546 8547 switch(message.what) { 8548 case CMD_STATIC_IP_SUCCESS: 8549 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8550 break; 8551 case CMD_STATIC_IP_FAILURE: 8552 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8553 break; 8554 case CMD_AUTO_CONNECT: 8555 case CMD_AUTO_ROAM: 8556 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8557 break; 8558 case WifiManager.SAVE_NETWORK: 8559 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8560 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8561 deferMessage(message); 8562 break; 8563 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8564 case CMD_SET_HIGH_PERF_MODE: 8565 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8566 deferMessage(message); 8567 break; 8568 /* Defer scan request since we should not switch to other channels at DHCP */ 8569 case CMD_START_SCAN: 8570 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8571 deferMessage(message); 8572 break; 8573 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8574 if (message.arg1 == obtainingIpWatchdogCount) { 8575 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8576 + obtainingIpWatchdogCount); 8577 handleIpConfigurationLost(); 8578 transitionTo(mDisconnectingState); 8579 break; 8580 } 8581 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8582 break; 8583 default: 8584 return NOT_HANDLED; 8585 } 8586 return HANDLED; 8587 } 8588 } 8589 8590 private void sendConnectedState() { 8591 // If this network was explicitly selected by the user, evaluate whether to call 8592 // explicitlySelected() so the system can treat it appropriately. 8593 WifiConfiguration config = getCurrentWifiConfiguration(); 8594 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8595 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8596 if (DBG) { 8597 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8598 } 8599 if (prompt) { 8600 // Selected by the user via Settings or QuickSettings. If this network has Internet 8601 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8602 // really want to switch, or has already confirmed and selected "Don't ask again". 8603 if (DBG) { 8604 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8605 } 8606 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8607 } 8608 } 8609 8610 setNetworkDetailedState(DetailedState.CONNECTED); 8611 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8612 sendNetworkStateChangeBroadcast(mLastBssid); 8613 } 8614 8615 class RoamingState extends State { 8616 boolean mAssociated; 8617 @Override 8618 public void enter() { 8619 if (DBG) { 8620 log("RoamingState Enter" 8621 + " mScreenOn=" + mScreenOn ); 8622 } 8623 setScanAlarm(false); 8624 8625 // Make sure we disconnect if roaming fails 8626 roamWatchdogCount++; 8627 logd("Start Roam Watchdog " + roamWatchdogCount); 8628 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8629 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8630 mAssociated = false; 8631 } 8632 @Override 8633 public boolean processMessage(Message message) { 8634 logStateAndMessage(message, this); 8635 WifiConfiguration config; 8636 switch (message.what) { 8637 case CMD_IP_CONFIGURATION_LOST: 8638 config = getCurrentWifiConfiguration(); 8639 if (config != null) { 8640 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8641 mWifiConfigStore.noteRoamingFailure(config, 8642 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8643 } 8644 return NOT_HANDLED; 8645 case CMD_UNWANTED_NETWORK: 8646 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8647 return HANDLED; 8648 case CMD_SET_OPERATIONAL_MODE: 8649 if (message.arg1 != CONNECT_MODE) { 8650 deferMessage(message); 8651 } 8652 break; 8653 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8654 /** 8655 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8656 * before NETWORK_DISCONNECTION_EVENT 8657 * And there is an associated BSSID corresponding to our target BSSID, then 8658 * we have missed the network disconnection, transition to mDisconnectedState 8659 * and handle the rest of the events there. 8660 */ 8661 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8662 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8663 || stateChangeResult.state == SupplicantState.INACTIVE 8664 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8665 if (DBG) { 8666 log("STATE_CHANGE_EVENT in roaming state " 8667 + stateChangeResult.toString() ); 8668 } 8669 if (stateChangeResult.BSSID != null 8670 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8671 handleNetworkDisconnect(); 8672 transitionTo(mDisconnectedState); 8673 } 8674 } 8675 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8676 // We completed the layer2 roaming part 8677 mAssociated = true; 8678 if (stateChangeResult.BSSID != null) { 8679 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8680 } 8681 } 8682 break; 8683 case CMD_ROAM_WATCHDOG_TIMER: 8684 if (roamWatchdogCount == message.arg1) { 8685 if (DBG) log("roaming watchdog! -> disconnect"); 8686 mRoamFailCount++; 8687 handleNetworkDisconnect(); 8688 mWifiNative.disconnect(); 8689 transitionTo(mDisconnectedState); 8690 } 8691 break; 8692 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8693 if (mAssociated) { 8694 if (DBG) log("roaming and Network connection established"); 8695 mLastNetworkId = message.arg1; 8696 mLastBssid = (String) message.obj; 8697 mWifiInfo.setBSSID(mLastBssid); 8698 mWifiInfo.setNetworkId(mLastNetworkId); 8699 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8700 sendNetworkStateChangeBroadcast(mLastBssid); 8701 transitionTo(mObtainingIpState); 8702 } else { 8703 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8704 } 8705 break; 8706 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8707 // Throw away but only if it corresponds to the network we're roaming to 8708 String bssid = (String)message.obj; 8709 if (true) { 8710 String target = ""; 8711 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8712 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8713 + " BSSID=" + bssid 8714 + " target=" + target); 8715 } 8716 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8717 handleNetworkDisconnect(); 8718 transitionTo(mDisconnectedState); 8719 } 8720 break; 8721 case WifiMonitor.SSID_TEMP_DISABLED: 8722 // Auth error while roaming 8723 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8724 + " id=" + Integer.toString(message.arg1) 8725 + " isRoaming=" + isRoaming() 8726 + " roam=" + mAutoRoaming); 8727 if (message.arg1 == mLastNetworkId) { 8728 config = getCurrentWifiConfiguration(); 8729 if (config != null) { 8730 mWifiLogger.captureBugReportData( 8731 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8732 mWifiConfigStore.noteRoamingFailure(config, 8733 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8734 } 8735 handleNetworkDisconnect(); 8736 transitionTo(mDisconnectingState); 8737 } 8738 return NOT_HANDLED; 8739 case CMD_START_SCAN: 8740 deferMessage(message); 8741 break; 8742 default: 8743 return NOT_HANDLED; 8744 } 8745 return HANDLED; 8746 } 8747 8748 @Override 8749 public void exit() { 8750 logd("WifiStateMachine: Leaving Roaming state"); 8751 } 8752 } 8753 8754 class ConnectedState extends State { 8755 @Override 8756 public void enter() { 8757 String address; 8758 updateDefaultRouteMacAddress(1000); 8759 if (DBG) { 8760 log("Enter ConnectedState " 8761 + " mScreenOn=" + mScreenOn 8762 + " scanperiod=" 8763 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8764 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8765 + mWifiConfigStore.enableHalBasedPno.get() 8766 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8767 } 8768 if (mScreenOn 8769 && getEnableAutoJoinWhenAssociated()) { 8770 if (useHalBasedAutoJoinOffload()) { 8771 startGScanConnectedModeOffload("connectedEnter"); 8772 } else { 8773 // restart scan alarm 8774 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8775 null, null); 8776 } 8777 } 8778 registerConnected(); 8779 lastConnectAttemptTimestamp = 0; 8780 targetWificonfiguration = null; 8781 // Paranoia 8782 linkDebouncing = false; 8783 8784 // Not roaming anymore 8785 mAutoRoaming = false; 8786 8787 if (testNetworkDisconnect) { 8788 testNetworkDisconnectCounter++; 8789 logd("ConnectedState Enter start disconnect test " + 8790 testNetworkDisconnectCounter); 8791 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8792 testNetworkDisconnectCounter, 0), 15000); 8793 } 8794 8795 // Reenable all networks, allow for hidden networks to be scanned 8796 mWifiConfigStore.enableAllNetworks(); 8797 8798 mLastDriverRoamAttempt = 0; 8799 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 8800 //startLazyRoam(); 8801 } 8802 @Override 8803 public boolean processMessage(Message message) { 8804 WifiConfiguration config = null; 8805 logStateAndMessage(message, this); 8806 8807 switch (message.what) { 8808 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8809 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8810 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8811 return HANDLED; 8812 } 8813 /* If we are still in Disconnected state after having discovered a valid 8814 * network this means autojoin didnt managed to associate to the network, 8815 * then restart PNO so as we will try associating to it again. 8816 */ 8817 if (useHalBasedAutoJoinOffload()) { 8818 if (mGScanStartTimeMilli == 0) { 8819 // If offload is not started, then start it... 8820 startGScanConnectedModeOffload("connectedRestart"); 8821 } else { 8822 // If offload is already started, then check if we need to increase 8823 // the scan period and restart the Gscan 8824 long now = System.currentTimeMillis(); 8825 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8826 && ((now - mGScanStartTimeMilli) 8827 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8828 && (mGScanPeriodMilli 8829 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8830 { 8831 startConnectedGScan("Connected restart gscan"); 8832 } 8833 } 8834 } 8835 break; 8836 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8837 updateAssociatedScanPermission(); 8838 break; 8839 case CMD_UNWANTED_NETWORK: 8840 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8841 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8842 mWifiNative.disconnect(); 8843 transitionTo(mDisconnectingState); 8844 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8845 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8846 Log.d(TAG, (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN 8847 ? "NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN" 8848 : "NETWORK_STATUS_UNWANTED_VALIDATION_FAILED")); 8849 config = getCurrentWifiConfiguration(); 8850 if (config != null) { 8851 // Disable autojoin 8852 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8853 config.validatedInternetAccess = false; 8854 // Clear last-selected status, as being last-selected also avoids 8855 // disabling auto-join. 8856 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8857 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 8858 WifiConfiguration.INVALID_NETWORK_ID); 8859 } 8860 mWifiConfigStore.updateNetworkSelectionStatus(config, 8861 WifiConfiguration.NetworkSelectionStatus 8862 .DISABLED_NO_INTERNET); 8863 } 8864 config.numNoInternetAccessReports += 1; 8865 mWifiConfigStore.writeKnownNetworkHistory(); 8866 } 8867 } 8868 return HANDLED; 8869 case CMD_NETWORK_STATUS: 8870 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8871 config = getCurrentWifiConfiguration(); 8872 if (config != null) { 8873 // re-enable autojoin 8874 config.numNoInternetAccessReports = 0; 8875 config.validatedInternetAccess = true; 8876 mWifiConfigStore.writeKnownNetworkHistory(); 8877 } 8878 } 8879 return HANDLED; 8880 case CMD_ACCEPT_UNVALIDATED: 8881 boolean accept = (message.arg1 != 0); 8882 config = getCurrentWifiConfiguration(); 8883 if (config != null) { 8884 config.noInternetAccessExpected = accept; 8885 } 8886 return HANDLED; 8887 case CMD_TEST_NETWORK_DISCONNECT: 8888 // Force a disconnect 8889 if (message.arg1 == testNetworkDisconnectCounter) { 8890 mWifiNative.disconnect(); 8891 } 8892 break; 8893 case CMD_ASSOCIATED_BSSID: 8894 // ASSOCIATING to a new BSSID while already connected, indicates 8895 // that driver is roaming 8896 mLastDriverRoamAttempt = System.currentTimeMillis(); 8897 String toBSSID = (String)message.obj; 8898 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8899 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8900 } 8901 return NOT_HANDLED; 8902 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8903 long lastRoam = 0; 8904 if (mLastDriverRoamAttempt != 0) { 8905 // Calculate time since last driver roam attempt 8906 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8907 mLastDriverRoamAttempt = 0; 8908 } 8909 if (unexpectedDisconnectedReason(message.arg2)) { 8910 mWifiLogger.captureBugReportData( 8911 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8912 } 8913 config = getCurrentWifiConfiguration(); 8914 if (mScreenOn 8915 && !linkDebouncing 8916 && config != null 8917 && config.getNetworkSelectionStatus().isNetworkEnabled() 8918 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8919 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8920 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8921 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8922 && mWifiInfo.getRssi() > 8923 WifiQualifiedNetworkSelector.QUALIFIED_RSSI_24G_BAND) 8924 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8925 && mWifiInfo.getRssi() > 8926 mWifiConfigStore.thresholdQualifiedRssi5.get()))) { 8927 // Start de-bouncing the L2 disconnection: 8928 // this L2 disconnection might be spurious. 8929 // Hence we allow 7 seconds for the state machine to try 8930 // to reconnect, go thru the 8931 // roaming cycle and enter Obtaining IP address 8932 // before signalling the disconnect to ConnectivityService and L3 8933 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8934 linkDebouncing = true; 8935 8936 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8937 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8938 if (DBG) { 8939 log("NETWORK_DISCONNECTION_EVENT in connected state" 8940 + " BSSID=" + mWifiInfo.getBSSID() 8941 + " RSSI=" + mWifiInfo.getRssi() 8942 + " freq=" + mWifiInfo.getFrequency() 8943 + " reason=" + message.arg2 8944 + " -> debounce"); 8945 } 8946 return HANDLED; 8947 } else { 8948 if (DBG) { 8949 log("NETWORK_DISCONNECTION_EVENT in connected state" 8950 + " BSSID=" + mWifiInfo.getBSSID() 8951 + " RSSI=" + mWifiInfo.getRssi() 8952 + " freq=" + mWifiInfo.getFrequency() 8953 + " was debouncing=" + linkDebouncing 8954 + " reason=" + message.arg2 8955 + " Network Selection Status=" + (config == null ? "Unavailable" 8956 : config.getNetworkSelectionStatus().getNetworkStatusString())); 8957 } 8958 } 8959 break; 8960 case CMD_AUTO_ROAM: 8961 // Clear the driver roam indication since we are attempting a framework roam 8962 mLastDriverRoamAttempt = 0; 8963 8964 /* Connect command coming from auto-join */ 8965 ScanResult candidate = (ScanResult)message.obj; 8966 String bssid = "any"; 8967 if (candidate != null) { 8968 bssid = candidate.BSSID; 8969 } 8970 int netId = mLastNetworkId; 8971 config = getCurrentWifiConfiguration(); 8972 8973 8974 if (config == null) { 8975 loge("AUTO_ROAM and no config, bail out..."); 8976 break; 8977 } 8978 8979 logd("CMD_AUTO_ROAM sup state " 8980 + mSupplicantStateTracker.getSupplicantStateName() 8981 + " my state " + getCurrentState().getName() 8982 + " nid=" + Integer.toString(netId) 8983 + " config " + config.configKey() 8984 + " roam=" + Integer.toString(message.arg2) 8985 + " to " + bssid 8986 + " targetRoamBSSID " + mTargetRoamBSSID); 8987 8988 setTargetBssid(config, bssid); 8989 mTargetNetworkId = netId; 8990 // Make sure the network is enabled, since supplicant will not re-enable it 8991 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8992 8993 if (deferForUserInput(message, netId, false)) { 8994 break; 8995 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8996 WifiConfiguration.USER_BANNED) { 8997 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8998 WifiManager.NOT_AUTHORIZED); 8999 break; 9000 } 9001 9002 boolean ret = false; 9003 if (mLastNetworkId != netId) { 9004 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 9005 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 9006 ret = true; 9007 } 9008 } else { 9009 ret = mWifiNative.reassociate(); 9010 } 9011 if (ret) { 9012 lastConnectAttemptTimestamp = System.currentTimeMillis(); 9013 mWifiMetrics.startConnectionEvent(mWifiInfo); 9014 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 9015 9016 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 9017 mAutoRoaming = true; 9018 transitionTo(mRoamingState); 9019 9020 } else { 9021 loge("Failed to connect config: " + config + " netId: " + netId); 9022 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9023 WifiManager.ERROR); 9024 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9025 break; 9026 } 9027 break; 9028 case CMD_START_IP_PACKET_OFFLOAD: { 9029 int slot = message.arg1; 9030 int intervalSeconds = message.arg2; 9031 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9032 byte[] dstMac; 9033 try { 9034 InetAddress gateway = RouteInfo.selectBestRoute( 9035 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9036 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9037 dstMac = macAddressFromString(dstMacStr); 9038 } catch (NullPointerException|IllegalArgumentException e) { 9039 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9040 mNetworkAgent.onPacketKeepaliveEvent(slot, 9041 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9042 break; 9043 } 9044 pkt.dstMac = dstMac; 9045 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9046 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9047 break; 9048 } 9049 default: 9050 return NOT_HANDLED; 9051 } 9052 return HANDLED; 9053 } 9054 9055 @Override 9056 public void exit() { 9057 logd("WifiStateMachine: Leaving Connected state"); 9058 setScanAlarm(false); 9059 mLastDriverRoamAttempt = 0; 9060 9061 stopLazyRoam(); 9062 9063 mWhiteListedSsids = null; 9064 } 9065 } 9066 9067 class DisconnectingState extends State { 9068 9069 @Override 9070 public void enter() { 9071 9072 if (PDBG) { 9073 logd(" Enter DisconnectingState State scan interval " 9074 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9075 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9076 + " screenOn=" + mScreenOn); 9077 } 9078 9079 // Make sure we disconnect: we enter this state prior to connecting to a new 9080 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9081 // event which in this case will be indicating that supplicant started to associate. 9082 // In some cases supplicant doesn't ignore the connect requests (it might not 9083 // find the target SSID in its cache), 9084 // Therefore we end up stuck that state, hence the need for the watchdog. 9085 disconnectingWatchdogCount++; 9086 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9087 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9088 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9089 } 9090 9091 @Override 9092 public boolean processMessage(Message message) { 9093 logStateAndMessage(message, this); 9094 switch (message.what) { 9095 case CMD_SET_OPERATIONAL_MODE: 9096 if (message.arg1 != CONNECT_MODE) { 9097 deferMessage(message); 9098 } 9099 break; 9100 case CMD_START_SCAN: 9101 deferMessage(message); 9102 return HANDLED; 9103 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9104 if (disconnectingWatchdogCount == message.arg1) { 9105 if (DBG) log("disconnecting watchdog! -> disconnect"); 9106 handleNetworkDisconnect(); 9107 transitionTo(mDisconnectedState); 9108 } 9109 break; 9110 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9111 /** 9112 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9113 * we have missed the network disconnection, transition to mDisconnectedState 9114 * and handle the rest of the events there 9115 */ 9116 deferMessage(message); 9117 handleNetworkDisconnect(); 9118 transitionTo(mDisconnectedState); 9119 break; 9120 default: 9121 return NOT_HANDLED; 9122 } 9123 return HANDLED; 9124 } 9125 } 9126 9127 class DisconnectedState extends State { 9128 @Override 9129 public void enter() { 9130 // We dont scan frequently if this is a temporary disconnect 9131 // due to p2p 9132 if (mTemporarilyDisconnectWifi) { 9133 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9134 return; 9135 } 9136 9137 if (PDBG) { 9138 logd(" Enter DisconnectedState scan interval " 9139 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9140 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9141 + " screenOn=" + mScreenOn 9142 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9143 + mWifiConfigStore.enableHalBasedPno.get()); 9144 } 9145 9146 /** clear the roaming state, if we were roaming, we failed */ 9147 mAutoRoaming = false; 9148 9149 if (useHalBasedAutoJoinOffload()) { 9150 startGScanDisconnectedModeOffload("disconnectedEnter"); 9151 } else { 9152 if (mScreenOn) { 9153 /** 9154 * screen lit and => start scan immediately 9155 */ 9156 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9157 } else { 9158 /** 9159 * screen dark and PNO supported => scan alarm disabled 9160 */ 9161 if (mBackgroundScanSupported) { 9162 /* If a regular scan result is pending, do not initiate background 9163 * scan until the scan results are returned. This is needed because 9164 * initiating a background scan will cancel the regular scan and 9165 * scan results will not be returned until background scanning is 9166 * cleared 9167 */ 9168 if (!mIsScanOngoing) { 9169 enableBackgroundScan(true); 9170 } 9171 } else { 9172 setScanAlarm(true); 9173 } 9174 } 9175 } 9176 9177 /** 9178 * If we have no networks saved, the supplicant stops doing the periodic scan. 9179 * The scans are useful to notify the user of the presence of an open network. 9180 * Note that these are not wake up scans. 9181 */ 9182 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9183 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9184 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9185 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9186 } 9187 9188 mDisconnectedTimeStamp = System.currentTimeMillis(); 9189 mDisconnectedPnoAlarmCount = 0; 9190 } 9191 @Override 9192 public boolean processMessage(Message message) { 9193 boolean ret = HANDLED; 9194 9195 logStateAndMessage(message, this); 9196 9197 switch (message.what) { 9198 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9199 if (mP2pConnected.get()) break; 9200 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9201 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9202 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9203 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9204 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9205 } 9206 break; 9207 case WifiManager.FORGET_NETWORK: 9208 case CMD_REMOVE_NETWORK: 9209 case CMD_REMOVE_APP_CONFIGURATIONS: 9210 case CMD_REMOVE_USER_CONFIGURATIONS: 9211 // Set up a delayed message here. After the forget/remove is handled 9212 // the handled delayed message will determine if there is a need to 9213 // scan and continue 9214 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9215 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9216 ret = NOT_HANDLED; 9217 break; 9218 case CMD_SET_OPERATIONAL_MODE: 9219 if (message.arg1 != CONNECT_MODE) { 9220 mOperationalMode = message.arg1; 9221 9222 mWifiConfigStore.disableAllNetworks(); 9223 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9224 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9225 setWifiState(WIFI_STATE_DISABLED); 9226 } 9227 transitionTo(mScanModeState); 9228 } 9229 mWifiConfigStore. 9230 setAndEnableLastSelectedConfiguration( 9231 WifiConfiguration.INVALID_NETWORK_ID); 9232 break; 9233 /* Ignore network disconnect */ 9234 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9235 // Interpret this as an L2 connection failure 9236 // End current connection event and log L2 reason code. 9237 mWifiMetrics.endConnectionEvent(message.arg2, 9238 WifiMetricsProto.ConnectionEvent.HLF_UNKNOWN); 9239 break; 9240 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9241 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9242 if (DBG) { 9243 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9244 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9245 + " debouncing=" + linkDebouncing); 9246 } 9247 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9248 /* ConnectModeState does the rest of the handling */ 9249 ret = NOT_HANDLED; 9250 break; 9251 case CMD_START_SCAN: 9252 if (!checkOrDeferScanAllowed(message)) { 9253 // The scan request was rescheduled 9254 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9255 return HANDLED; 9256 } 9257 if (message.arg1 == SCAN_ALARM_SOURCE) { 9258 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9259 // not be processed) and restart the scan 9260 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9261 if (mP2pConnected.get()) { 9262 period = (int) mFacade.getLongSetting(mContext, 9263 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9264 period); 9265 } 9266 if (!checkAndRestartDelayedScan(message.arg2, 9267 true, period, null, null)) { 9268 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9269 logd("Disconnected CMD_START_SCAN source " 9270 + message.arg1 9271 + " " + message.arg2 + ", " + mDelayedScanCounter 9272 + " -> obsolete"); 9273 return HANDLED; 9274 } 9275 /* Disable background scan temporarily during a regular scan */ 9276 enableBackgroundScan(false); 9277 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9278 ret = HANDLED; 9279 } else { 9280 9281 /* 9282 * The SCAN request is not handled in this state and 9283 * would eventually might/will get handled in the 9284 * parent's state. The PNO, if already enabled had to 9285 * get disabled before the SCAN trigger. Hence, stop 9286 * the PNO if already enabled in this state, though the 9287 * SCAN request is not handled(PNO disable before the 9288 * SCAN trigger in any other state is not the right 9289 * place to issue). 9290 */ 9291 9292 enableBackgroundScan(false); 9293 ret = NOT_HANDLED; 9294 } 9295 break; 9296 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9297 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9298 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9299 return HANDLED; 9300 } 9301 /* If we are still in Disconnected state after having discovered a valid 9302 * network this means autojoin didnt managed to associate to the network, 9303 * then restart PNO so as we will try associating to it again. 9304 */ 9305 if (useHalBasedAutoJoinOffload()) { 9306 if (mGScanStartTimeMilli == 0) { 9307 // If offload is not started, then start it... 9308 startGScanDisconnectedModeOffload("disconnectedRestart"); 9309 } else { 9310 // If offload is already started, then check if we need to increase 9311 // the scan period and restart the Gscan 9312 long now = System.currentTimeMillis(); 9313 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9314 && ((now - mGScanStartTimeMilli) 9315 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9316 && (mGScanPeriodMilli 9317 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9318 { 9319 startDisconnectedGScan("disconnected restart gscan"); 9320 } 9321 } 9322 } else { 9323 // If we are still disconnected for a short while after having found a 9324 // network thru PNO, then something went wrong, and for some reason we 9325 // couldn't join this network. 9326 // It might be due to a SW bug in supplicant or the wifi stack, or an 9327 // interoperability issue, or we try to join a bad bss and failed 9328 // In that case we want to restart pno so as to make sure that we will 9329 // attempt again to join that network. 9330 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9331 enableBackgroundScan(false); 9332 enableBackgroundScan(true); 9333 } 9334 return HANDLED; 9335 } 9336 break; 9337 case WifiMonitor.SCAN_RESULTS_EVENT: 9338 case WifiMonitor.SCAN_FAILED_EVENT: 9339 /* Re-enable background scan when a pending scan result is received */ 9340 if (!mScreenOn && mIsScanOngoing 9341 && mBackgroundScanSupported 9342 && !useHalBasedAutoJoinOffload()) { 9343 enableBackgroundScan(true); 9344 } else if (!mScreenOn 9345 && !mIsScanOngoing 9346 && mBackgroundScanSupported 9347 && !useHalBasedAutoJoinOffload()) { 9348 // We receive scan results from legacy PNO, hence restart the PNO alarm 9349 int delay; 9350 if (mDisconnectedPnoAlarmCount < 1) { 9351 delay = 30 * 1000; 9352 } else if (mDisconnectedPnoAlarmCount < 3) { 9353 delay = 60 * 1000; 9354 } else { 9355 delay = 360 * 1000; 9356 } 9357 mDisconnectedPnoAlarmCount++; 9358 if (VDBG) { 9359 logd("Starting PNO alarm " + delay); 9360 } 9361 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9362 System.currentTimeMillis() + delay, 9363 mPnoIntent); 9364 } 9365 /* Handled in parent state */ 9366 ret = NOT_HANDLED; 9367 break; 9368 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9369 NetworkInfo info = (NetworkInfo) message.obj; 9370 mP2pConnected.set(info.isConnected()); 9371 if (mP2pConnected.get()) { 9372 int defaultInterval = mContext.getResources().getInteger( 9373 R.integer.config_wifi_scan_interval_p2p_connected); 9374 long scanIntervalMs = mFacade.getLongSetting(mContext, 9375 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9376 defaultInterval); 9377 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9378 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9379 if (DBG) log("Turn on scanning after p2p disconnected"); 9380 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9381 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9382 } else { 9383 // If P2P is not connected and there are saved networks, then restart 9384 // scanning at the normal period. This is necessary because scanning might 9385 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9386 // was set to zero. 9387 if (useHalBasedAutoJoinOffload()) { 9388 startGScanDisconnectedModeOffload("p2pRestart"); 9389 } else { 9390 startDelayedScan( 9391 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9392 null, null); 9393 } 9394 } 9395 break; 9396 case CMD_RECONNECT: 9397 case CMD_REASSOCIATE: 9398 if (mTemporarilyDisconnectWifi) { 9399 // Drop a third party reconnect/reassociate if STA is 9400 // temporarily disconnected for p2p 9401 break; 9402 } else { 9403 // ConnectModeState handles it 9404 ret = NOT_HANDLED; 9405 } 9406 break; 9407 case CMD_SCREEN_STATE_CHANGED: 9408 handleScreenStateChanged(message.arg1 != 0); 9409 break; 9410 default: 9411 ret = NOT_HANDLED; 9412 } 9413 return ret; 9414 } 9415 9416 @Override 9417 public void exit() { 9418 mDisconnectedPnoAlarmCount = 0; 9419 /* No need for a background scan upon exit from a disconnected state */ 9420 enableBackgroundScan(false); 9421 setScanAlarm(false); 9422 mAlarmManager.cancel(mPnoIntent); 9423 } 9424 } 9425 9426 class WpsRunningState extends State { 9427 // Tracks the source to provide a reply 9428 private Message mSourceMessage; 9429 @Override 9430 public void enter() { 9431 mSourceMessage = Message.obtain(getCurrentMessage()); 9432 } 9433 @Override 9434 public boolean processMessage(Message message) { 9435 logStateAndMessage(message, this); 9436 9437 switch (message.what) { 9438 case WifiMonitor.WPS_SUCCESS_EVENT: 9439 // Ignore intermediate success, wait for full connection 9440 break; 9441 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9442 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9443 mSourceMessage.recycle(); 9444 mSourceMessage = null; 9445 deferMessage(message); 9446 transitionTo(mDisconnectedState); 9447 break; 9448 case WifiMonitor.WPS_OVERLAP_EVENT: 9449 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9450 WifiManager.WPS_OVERLAP_ERROR); 9451 mSourceMessage.recycle(); 9452 mSourceMessage = null; 9453 transitionTo(mDisconnectedState); 9454 break; 9455 case WifiMonitor.WPS_FAIL_EVENT: 9456 // Arg1 has the reason for the failure 9457 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9458 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9459 mSourceMessage.recycle(); 9460 mSourceMessage = null; 9461 transitionTo(mDisconnectedState); 9462 mWifiMetrics.endConnectionEvent( 9463 message.arg1, WifiMetricsProto.ConnectionEvent.HLF_UNKNOWN); 9464 } else { 9465 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9466 } 9467 break; 9468 case WifiMonitor.WPS_TIMEOUT_EVENT: 9469 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9470 WifiManager.WPS_TIMED_OUT); 9471 mSourceMessage.recycle(); 9472 mSourceMessage = null; 9473 transitionTo(mDisconnectedState); 9474 break; 9475 case WifiManager.START_WPS: 9476 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9477 break; 9478 case WifiManager.CANCEL_WPS: 9479 if (mWifiNative.cancelWps()) { 9480 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9481 } else { 9482 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9483 } 9484 transitionTo(mDisconnectedState); 9485 break; 9486 /** 9487 * Defer all commands that can cause connections to a different network 9488 * or put the state machine out of connect mode 9489 */ 9490 case CMD_STOP_DRIVER: 9491 case CMD_SET_OPERATIONAL_MODE: 9492 case WifiManager.CONNECT_NETWORK: 9493 case CMD_ENABLE_NETWORK: 9494 case CMD_RECONNECT: 9495 case CMD_REASSOCIATE: 9496 case CMD_ENABLE_ALL_NETWORKS: 9497 deferMessage(message); 9498 break; 9499 case CMD_AUTO_CONNECT: 9500 case CMD_AUTO_ROAM: 9501 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9502 return HANDLED; 9503 case CMD_START_SCAN: 9504 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9505 return HANDLED; 9506 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9507 if (DBG) log("Network connection lost"); 9508 handleNetworkDisconnect(); 9509 break; 9510 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9511 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9512 break; 9513 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9514 // Disregard auth failure events during WPS connection. The 9515 // EAP sequence is retried several times, and there might be 9516 // failures (especially for wps pin). We will get a WPS_XXX 9517 // event at the end of the sequence anyway. 9518 if (DBG) log("Ignore auth failure during WPS connection"); 9519 break; 9520 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9521 // Throw away supplicant state changes when WPS is running. 9522 // We will start getting supplicant state changes once we get 9523 // a WPS success or failure 9524 break; 9525 default: 9526 return NOT_HANDLED; 9527 } 9528 return HANDLED; 9529 } 9530 9531 @Override 9532 public void exit() { 9533 mWifiConfigStore.enableAllNetworks(); 9534 mWifiConfigStore.loadConfiguredNetworks(); 9535 } 9536 } 9537 9538 class SoftApStartingState extends State { 9539 @Override 9540 public void enter() { 9541 final Message message = getCurrentMessage(); 9542 if (message.what == CMD_START_AP) { 9543 final WifiConfiguration config = (WifiConfiguration) message.obj; 9544 9545 if (config == null) { 9546 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9547 } else { 9548 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9549 startSoftApWithConfig(config); 9550 } 9551 } else { 9552 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9553 } 9554 } 9555 @Override 9556 public boolean processMessage(Message message) { 9557 logStateAndMessage(message, this); 9558 9559 switch(message.what) { 9560 case CMD_START_SUPPLICANT: 9561 case CMD_STOP_SUPPLICANT: 9562 case CMD_START_AP: 9563 case CMD_STOP_AP: 9564 case CMD_START_DRIVER: 9565 case CMD_STOP_DRIVER: 9566 case CMD_SET_OPERATIONAL_MODE: 9567 case CMD_SET_COUNTRY_CODE: 9568 case CMD_SET_FREQUENCY_BAND: 9569 case CMD_START_PACKET_FILTERING: 9570 case CMD_STOP_PACKET_FILTERING: 9571 case CMD_TETHER_STATE_CHANGE: 9572 deferMessage(message); 9573 break; 9574 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9575 WifiConfiguration config = (WifiConfiguration) message.obj; 9576 if (config != null) { 9577 startSoftApWithConfig(config); 9578 } else { 9579 loge("Softap config is null!"); 9580 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9581 } 9582 break; 9583 case CMD_START_AP_SUCCESS: 9584 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9585 transitionTo(mSoftApStartedState); 9586 break; 9587 case CMD_START_AP_FAILURE: 9588 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9589 transitionTo(mInitialState); 9590 break; 9591 default: 9592 return NOT_HANDLED; 9593 } 9594 return HANDLED; 9595 } 9596 } 9597 9598 class SoftApStartedState extends State { 9599 @Override 9600 public boolean processMessage(Message message) { 9601 logStateAndMessage(message, this); 9602 9603 switch(message.what) { 9604 case CMD_STOP_AP: 9605 if (DBG) log("Stopping Soft AP"); 9606 /* We have not tethered at this point, so we just shutdown soft Ap */ 9607 try { 9608 mNwService.stopAccessPoint(mInterfaceName); 9609 } catch(Exception e) { 9610 loge("Exception in stopAccessPoint()"); 9611 } 9612 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9613 transitionTo(mInitialState); 9614 break; 9615 case CMD_START_AP: 9616 // Ignore a start on a running access point 9617 break; 9618 // Fail client mode operation when soft AP is enabled 9619 case CMD_START_SUPPLICANT: 9620 loge("Cannot start supplicant with a running soft AP"); 9621 setWifiState(WIFI_STATE_UNKNOWN); 9622 break; 9623 case CMD_TETHER_STATE_CHANGE: 9624 TetherStateChange stateChange = (TetherStateChange) message.obj; 9625 if (startTethering(stateChange.available)) { 9626 transitionTo(mTetheringState); 9627 } 9628 break; 9629 default: 9630 return NOT_HANDLED; 9631 } 9632 return HANDLED; 9633 } 9634 } 9635 9636 class TetheringState extends State { 9637 @Override 9638 public void enter() { 9639 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9640 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9641 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9642 } 9643 @Override 9644 public boolean processMessage(Message message) { 9645 logStateAndMessage(message, this); 9646 9647 switch(message.what) { 9648 case CMD_TETHER_STATE_CHANGE: 9649 TetherStateChange stateChange = (TetherStateChange) message.obj; 9650 if (isWifiTethered(stateChange.active)) { 9651 transitionTo(mTetheredState); 9652 } 9653 return HANDLED; 9654 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9655 if (message.arg1 == mTetherToken) { 9656 loge("Failed to get tether update, shutdown soft access point"); 9657 transitionTo(mSoftApStartedState); 9658 // Needs to be first thing handled 9659 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9660 } 9661 break; 9662 case CMD_START_SUPPLICANT: 9663 case CMD_STOP_SUPPLICANT: 9664 case CMD_START_AP: 9665 case CMD_STOP_AP: 9666 case CMD_START_DRIVER: 9667 case CMD_STOP_DRIVER: 9668 case CMD_SET_OPERATIONAL_MODE: 9669 case CMD_SET_COUNTRY_CODE: 9670 case CMD_SET_FREQUENCY_BAND: 9671 case CMD_START_PACKET_FILTERING: 9672 case CMD_STOP_PACKET_FILTERING: 9673 deferMessage(message); 9674 break; 9675 default: 9676 return NOT_HANDLED; 9677 } 9678 return HANDLED; 9679 } 9680 } 9681 9682 class TetheredState extends State { 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 if (!isWifiTethered(stateChange.active)) { 9691 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9692 setHostApRunning(null, false); 9693 setHostApRunning(null, true); 9694 } 9695 return HANDLED; 9696 case CMD_STOP_AP: 9697 if (DBG) log("Untethering before stopping AP"); 9698 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9699 stopTethering(); 9700 transitionTo(mUntetheringState); 9701 // More work to do after untethering 9702 deferMessage(message); 9703 break; 9704 default: 9705 return NOT_HANDLED; 9706 } 9707 return HANDLED; 9708 } 9709 } 9710 9711 class UntetheringState extends State { 9712 @Override 9713 public void enter() { 9714 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9715 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9716 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9717 9718 } 9719 @Override 9720 public boolean processMessage(Message message) { 9721 logStateAndMessage(message, this); 9722 9723 switch(message.what) { 9724 case CMD_TETHER_STATE_CHANGE: 9725 TetherStateChange stateChange = (TetherStateChange) message.obj; 9726 9727 /* Wait till wifi is untethered */ 9728 if (isWifiTethered(stateChange.active)) break; 9729 9730 transitionTo(mSoftApStartedState); 9731 break; 9732 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9733 if (message.arg1 == mTetherToken) { 9734 loge("Failed to get tether update, force stop access point"); 9735 transitionTo(mSoftApStartedState); 9736 } 9737 break; 9738 case CMD_START_SUPPLICANT: 9739 case CMD_STOP_SUPPLICANT: 9740 case CMD_START_AP: 9741 case CMD_STOP_AP: 9742 case CMD_START_DRIVER: 9743 case CMD_STOP_DRIVER: 9744 case CMD_SET_OPERATIONAL_MODE: 9745 case CMD_SET_COUNTRY_CODE: 9746 case CMD_SET_FREQUENCY_BAND: 9747 case CMD_START_PACKET_FILTERING: 9748 case CMD_STOP_PACKET_FILTERING: 9749 deferMessage(message); 9750 break; 9751 default: 9752 return NOT_HANDLED; 9753 } 9754 return HANDLED; 9755 } 9756 } 9757 9758 /** 9759 * State machine initiated requests can have replyTo set to null indicating 9760 * there are no recepients, we ignore those reply actions. 9761 */ 9762 private void replyToMessage(Message msg, int what) { 9763 if (msg.replyTo == null) return; 9764 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9765 mReplyChannel.replyToMessage(msg, dstMsg); 9766 } 9767 9768 private void replyToMessage(Message msg, int what, int arg1) { 9769 if (msg.replyTo == null) return; 9770 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9771 dstMsg.arg1 = arg1; 9772 mReplyChannel.replyToMessage(msg, dstMsg); 9773 } 9774 9775 private void replyToMessage(Message msg, int what, Object obj) { 9776 if (msg.replyTo == null) return; 9777 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9778 dstMsg.obj = obj; 9779 mReplyChannel.replyToMessage(msg, dstMsg); 9780 } 9781 9782 /** 9783 * arg2 on the source message has a unique id that needs to be retained in replies 9784 * to match the request 9785 * <p>see WifiManager for details 9786 */ 9787 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9788 Message msg = Message.obtain(); 9789 msg.what = what; 9790 msg.arg2 = srcMsg.arg2; 9791 return msg; 9792 } 9793 9794 /** 9795 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9796 * @param msg Must have a WifiConfiguration obj to succeed 9797 */ 9798 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9799 WifiConfiguration config) { 9800 if (config != null && config.preSharedKey != null) { 9801 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9802 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9803 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9804 wifiCredentialEventType); 9805 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9806 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9807 } 9808 } 9809 9810 private static int parseHex(char ch) { 9811 if ('0' <= ch && ch <= '9') { 9812 return ch - '0'; 9813 } else if ('a' <= ch && ch <= 'f') { 9814 return ch - 'a' + 10; 9815 } else if ('A' <= ch && ch <= 'F') { 9816 return ch - 'A' + 10; 9817 } else { 9818 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9819 } 9820 } 9821 9822 private byte[] parseHex(String hex) { 9823 /* This only works for good input; don't throw bad data at it */ 9824 if (hex == null) { 9825 return new byte[0]; 9826 } 9827 9828 if (hex.length() % 2 != 0) { 9829 throw new NumberFormatException(hex + " is not a valid hex string"); 9830 } 9831 9832 byte[] result = new byte[(hex.length())/2 + 1]; 9833 result[0] = (byte) ((hex.length())/2); 9834 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9835 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9836 byte b = (byte) (val & 0xFF); 9837 result[j] = b; 9838 } 9839 9840 return result; 9841 } 9842 9843 private static String makeHex(byte[] bytes) { 9844 StringBuilder sb = new StringBuilder(); 9845 for (byte b : bytes) { 9846 sb.append(String.format("%02x", b)); 9847 } 9848 return sb.toString(); 9849 } 9850 9851 private static String makeHex(byte[] bytes, int from, int len) { 9852 StringBuilder sb = new StringBuilder(); 9853 for (int i = 0; i < len; i++) { 9854 sb.append(String.format("%02x", bytes[from+i])); 9855 } 9856 return sb.toString(); 9857 } 9858 9859 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9860 9861 int len = array1.length + array2.length + array3.length; 9862 9863 if (array1.length != 0) { 9864 len++; /* add another byte for size */ 9865 } 9866 9867 if (array2.length != 0) { 9868 len++; /* add another byte for size */ 9869 } 9870 9871 if (array3.length != 0) { 9872 len++; /* add another byte for size */ 9873 } 9874 9875 byte[] result = new byte[len]; 9876 9877 int index = 0; 9878 if (array1.length != 0) { 9879 result[index] = (byte) (array1.length & 0xFF); 9880 index++; 9881 for (byte b : array1) { 9882 result[index] = b; 9883 index++; 9884 } 9885 } 9886 9887 if (array2.length != 0) { 9888 result[index] = (byte) (array2.length & 0xFF); 9889 index++; 9890 for (byte b : array2) { 9891 result[index] = b; 9892 index++; 9893 } 9894 } 9895 9896 if (array3.length != 0) { 9897 result[index] = (byte) (array3.length & 0xFF); 9898 index++; 9899 for (byte b : array3) { 9900 result[index] = b; 9901 index++; 9902 } 9903 } 9904 return result; 9905 } 9906 9907 private static byte[] concatHex(byte[] array1, byte[] array2) { 9908 9909 int len = array1.length + array2.length; 9910 9911 byte[] result = new byte[len]; 9912 9913 int index = 0; 9914 if (array1.length != 0) { 9915 for (byte b : array1) { 9916 result[index] = b; 9917 index++; 9918 } 9919 } 9920 9921 if (array2.length != 0) { 9922 for (byte b : array2) { 9923 result[index] = b; 9924 index++; 9925 } 9926 } 9927 9928 return result; 9929 } 9930 9931 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9932 if (targetWificonfiguration == null 9933 || targetWificonfiguration.networkId == requestData.networkId) { 9934 logd("id matches targetWifiConfiguration"); 9935 } else { 9936 logd("id does not match targetWifiConfiguration"); 9937 return; 9938 } 9939 9940 TelephonyManager tm = (TelephonyManager) 9941 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9942 9943 if (tm != null) { 9944 StringBuilder sb = new StringBuilder(); 9945 for (String challenge : requestData.data) { 9946 9947 if (challenge == null || challenge.isEmpty()) 9948 continue; 9949 logd("RAND = " + challenge); 9950 9951 byte[] rand = null; 9952 try { 9953 rand = parseHex(challenge); 9954 } catch (NumberFormatException e) { 9955 loge("malformed challenge"); 9956 continue; 9957 } 9958 9959 String base64Challenge = android.util.Base64.encodeToString( 9960 rand, android.util.Base64.NO_WRAP); 9961 /* 9962 * First, try with appType = 2 => USIM according to 9963 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9964 */ 9965 int appType = 2; 9966 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9967 if (tmResponse == null) { 9968 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9969 * appType = 1 => SIM 9970 */ 9971 appType = 1; 9972 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9973 } 9974 logv("Raw Response - " + tmResponse); 9975 9976 if (tmResponse != null && tmResponse.length() > 4) { 9977 byte[] result = android.util.Base64.decode(tmResponse, 9978 android.util.Base64.DEFAULT); 9979 logv("Hex Response -" + makeHex(result)); 9980 int sres_len = result[0]; 9981 String sres = makeHex(result, 1, sres_len); 9982 int kc_offset = 1+sres_len; 9983 int kc_len = result[kc_offset]; 9984 String kc = makeHex(result, 1 + kc_offset, kc_len); 9985 sb.append(":" + kc + ":" + sres); 9986 logv("kc:" + kc + " sres:" + sres); 9987 9988 String response = sb.toString(); 9989 logv("Supplicant Response -" + response); 9990 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9991 } else { 9992 loge("bad response - " + tmResponse); 9993 mWifiNative.simAuthFailedResponse(requestData.networkId); 9994 } 9995 } 9996 9997 } else { 9998 loge("could not get telephony manager"); 9999 mWifiNative.simAuthFailedResponse(requestData.networkId); 10000 } 10001 } 10002 10003 void handle3GAuthRequest(SimAuthRequestData requestData) { 10004 StringBuilder sb = new StringBuilder(); 10005 byte[] rand = null; 10006 byte[] authn = null; 10007 String res_type = "UMTS-AUTH"; 10008 10009 if (targetWificonfiguration == null 10010 || targetWificonfiguration.networkId == requestData.networkId) { 10011 logd("id matches targetWifiConfiguration"); 10012 } else { 10013 logd("id does not match targetWifiConfiguration"); 10014 return; 10015 } 10016 if (requestData.data.length == 2) { 10017 try { 10018 rand = parseHex(requestData.data[0]); 10019 authn = parseHex(requestData.data[1]); 10020 } catch (NumberFormatException e) { 10021 loge("malformed challenge"); 10022 } 10023 } else { 10024 loge("malformed challenge"); 10025 } 10026 10027 String tmResponse = ""; 10028 if (rand != null && authn != null) { 10029 String base64Challenge = android.util.Base64.encodeToString( 10030 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10031 10032 TelephonyManager tm = (TelephonyManager) 10033 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10034 if (tm != null) { 10035 int appType = 2; // 2 => USIM 10036 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10037 logv("Raw Response - " + tmResponse); 10038 } else { 10039 loge("could not get telephony manager"); 10040 } 10041 } 10042 10043 boolean good_response = false; 10044 if (tmResponse != null && tmResponse.length() > 4) { 10045 byte[] result = android.util.Base64.decode(tmResponse, 10046 android.util.Base64.DEFAULT); 10047 loge("Hex Response - " + makeHex(result)); 10048 byte tag = result[0]; 10049 if (tag == (byte) 0xdb) { 10050 logv("successful 3G authentication "); 10051 int res_len = result[1]; 10052 String res = makeHex(result, 2, res_len); 10053 int ck_len = result[res_len + 2]; 10054 String ck = makeHex(result, res_len + 3, ck_len); 10055 int ik_len = result[res_len + ck_len + 3]; 10056 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10057 sb.append(":" + ik + ":" + ck + ":" + res); 10058 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10059 good_response = true; 10060 } else if (tag == (byte) 0xdc) { 10061 loge("synchronisation failure"); 10062 int auts_len = result[1]; 10063 String auts = makeHex(result, 2, auts_len); 10064 res_type = "UMTS-AUTS"; 10065 sb.append(":" + auts); 10066 logv("auts:" + auts); 10067 good_response = true; 10068 } else { 10069 loge("bad response - unknown tag = " + tag); 10070 } 10071 } else { 10072 loge("bad response - " + tmResponse); 10073 } 10074 10075 if (good_response) { 10076 String response = sb.toString(); 10077 logv("Supplicant Response -" + response); 10078 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10079 } else { 10080 mWifiNative.umtsAuthFailedResponse(requestData.networkId); 10081 } 10082 } 10083 10084 public int getCurrentUserId() { 10085 return mCurrentUserId; 10086 } 10087 10088 /** 10089 * @param reason reason code from supplicant on network disconnected event 10090 * @return true if this is a suspicious disconnect 10091 */ 10092 static boolean unexpectedDisconnectedReason(int reason) { 10093 return reason == 2 // PREV_AUTH_NOT_VALID 10094 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10095 || reason == 7 // FRAME_FROM_NONASSOC_STA 10096 || reason == 8 // STA_HAS_LEFT 10097 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10098 || reason == 14 // MICHAEL_MIC_FAILURE 10099 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10100 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10101 || reason == 18 // GROUP_CIPHER_NOT_VALID 10102 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10103 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10104 || reason == 34; // DISASSOC_LOW_ACK 10105 } 10106 10107 /** 10108 * Update WifiMetrics before dumping 10109 */ 10110 void updateWifiMetrics() { 10111 int numSavedNetworks = mWifiConfigStore.getConfiguredNetworksSize(); 10112 int numOpenNetworks = 0; 10113 int numPersonalNetworks = 0; 10114 int numEnterpriseNetworks = 0; 10115 int numNetworksAddedByUser = 0; 10116 int numNetworksAddedByApps = 0; 10117 for (WifiConfiguration config : mWifiConfigStore.getConfiguredNetworks()) { 10118 if (config.allowedAuthAlgorithms.get(WifiConfiguration.AuthAlgorithm.OPEN)) { 10119 numOpenNetworks++; 10120 } else if (config.isEnterprise()) { 10121 numEnterpriseNetworks++; 10122 } else { 10123 numPersonalNetworks++; 10124 } 10125 if (config.selfAdded) { 10126 numNetworksAddedByUser++; 10127 } else { 10128 numNetworksAddedByApps++; 10129 } 10130 } 10131 mWifiMetrics.setNumSavedNetworks(numSavedNetworks); 10132 mWifiMetrics.setNumOpenNetworks(numOpenNetworks); 10133 mWifiMetrics.setNumPersonalNetworks(numPersonalNetworks); 10134 mWifiMetrics.setNumEnterpriseNetworks(numEnterpriseNetworks); 10135 mWifiMetrics.setNumNetworksAddedByUser(numNetworksAddedByUser); 10136 mWifiMetrics.setNumNetworksAddedByApps(numNetworksAddedByApps); 10137 10138 /* <TODO> decide how to access WifiServiecImpl.isLocationEnabled() or if to do it manually 10139 mWifiMetrics.setIsLocationEnabled(Settings.Secure.getInt( 10140 mContext.getContentResolver(), 10141 Settings.Secure.LOCATION_MODE, Settings.Secure.LOCATION_MODE_OFF) 10142 != Settings.Secure.LOCATION_MODE_OFF); 10143 */ 10144 10145 /* <TODO> decide how statemachine will access WifiSettingsStore 10146 mWifiMetrics.setIsScanningAlwaysEnabled(mSettingsStore.isScanningAlwaysAvailable()); 10147 */ 10148 } 10149 10150 private static String getLinkPropertiesSummary(LinkProperties lp) { 10151 List<String> attributes = new ArrayList(6); 10152 if (lp.hasIPv4Address()) { 10153 attributes.add("v4"); 10154 } 10155 if (lp.hasIPv4DefaultRoute()) { 10156 attributes.add("v4r"); 10157 } 10158 if (lp.hasIPv4DnsServer()) { 10159 attributes.add("v4dns"); 10160 } 10161 if (lp.hasGlobalIPv6Address()) { 10162 attributes.add("v6"); 10163 } 10164 if (lp.hasIPv6DefaultRoute()) { 10165 attributes.add("v6r"); 10166 } 10167 if (lp.hasIPv6DnsServer()) { 10168 attributes.add("v6dns"); 10169 } 10170 10171 // TODO: Replace with String.join(" ", attributes) once we're fully on JDK 8. 10172 StringBuilder sb = new StringBuilder(); 10173 boolean first = true; 10174 for (String attr : attributes) { 10175 if (!first) { 10176 sb.append(" "); 10177 } else { 10178 first = false; 10179 } 10180 sb.append(attr); 10181 } 10182 return sb.toString(); 10183 } 10184} 10185