WifiStateMachine.java revision 21a7287737e8b2a122b07d63a7393868101a99a1
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 android.Manifest; 20import android.app.ActivityManager; 21import android.app.AlarmManager; 22import android.app.PendingIntent; 23import android.app.backup.IBackupManager; 24import android.bluetooth.BluetoothAdapter; 25import android.content.BroadcastReceiver; 26import android.content.Context; 27import android.content.Intent; 28import android.content.IntentFilter; 29import android.content.pm.ApplicationInfo; 30import android.content.pm.IPackageManager; 31import android.content.pm.PackageManager; 32import android.database.ContentObserver; 33import android.net.BaseDhcpStateMachine; 34import android.net.ConnectivityManager; 35import android.net.DhcpResults; 36import android.net.DhcpStateMachine; 37import android.net.InterfaceConfiguration; 38import android.net.LinkAddress; 39import android.net.LinkProperties; 40import android.net.Network; 41import android.net.NetworkAgent; 42import android.net.NetworkCapabilities; 43import android.net.NetworkFactory; 44import android.net.NetworkInfo; 45import android.net.NetworkInfo.DetailedState; 46import android.net.NetworkRequest; 47import android.net.NetworkUtils; 48import android.net.RouteInfo; 49import android.net.StaticIpConfiguration; 50import android.net.ip.IpReachabilityMonitor; 51import android.net.wifi.RssiPacketCountInfo; 52import android.net.wifi.ScanResult; 53import android.net.wifi.ScanSettings; 54import android.net.wifi.SupplicantState; 55import android.net.wifi.WifiChannel; 56import android.net.wifi.WifiConfiguration; 57import android.net.wifi.WifiConnectionStatistics; 58import android.net.wifi.WifiEnterpriseConfig; 59import android.net.wifi.WifiInfo; 60import android.net.wifi.WifiLinkLayerStats; 61import android.net.wifi.WifiManager; 62import android.net.wifi.WifiScanner; 63import android.net.wifi.WifiSsid; 64import android.net.wifi.WpsInfo; 65import android.net.wifi.WpsResult; 66import android.net.wifi.WpsResult.Status; 67import android.net.wifi.p2p.IWifiP2pManager; 68import android.os.BatteryStats; 69import android.os.Binder; 70import android.os.Bundle; 71import android.os.IBinder; 72import android.os.INetworkManagementService; 73import android.os.Looper; 74import android.os.Message; 75import android.os.Messenger; 76import android.os.PowerManager; 77import android.os.Process; 78import android.os.RemoteException; 79import android.os.SystemClock; 80import android.os.SystemProperties; 81import android.os.UserHandle; 82import android.os.WorkSource; 83import android.provider.Settings; 84import android.telephony.TelephonyManager; 85import android.text.TextUtils; 86import android.util.Log; 87import android.util.LruCache; 88 89import com.android.internal.R; 90import com.android.internal.app.IBatteryStats; 91import com.android.internal.util.AsyncChannel; 92import com.android.internal.util.Protocol; 93import com.android.internal.util.State; 94import com.android.internal.util.StateMachine; 95import com.android.server.connectivity.KeepalivePacketData; 96import com.android.server.net.NetlinkTracker; 97import com.android.server.wifi.hotspot2.IconEvent; 98import com.android.server.wifi.hotspot2.NetworkDetail; 99import com.android.server.wifi.hotspot2.osu.OSUInfo; 100import com.android.server.wifi.p2p.WifiP2pServiceImpl; 101 102import java.io.BufferedReader; 103import java.io.FileDescriptor; 104import java.io.FileNotFoundException; 105import java.io.FileReader; 106import java.io.IOException; 107import java.io.PrintWriter; 108import java.net.Inet4Address; 109import java.net.InetAddress; 110import java.util.ArrayList; 111import java.util.Arrays; 112import java.util.Calendar; 113import java.util.Collection; 114import java.util.HashSet; 115import java.util.LinkedList; 116import java.util.List; 117import java.util.Locale; 118import java.util.Queue; 119import java.util.Random; 120import java.util.Set; 121import java.util.concurrent.atomic.AtomicBoolean; 122import java.util.concurrent.atomic.AtomicInteger; 123import java.util.regex.Pattern; 124 125import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 126import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 127import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 128import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 129import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 130import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 131import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 132import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 133import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 134import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 135 136/** 137 * TODO: 138 * Deprecate WIFI_STATE_UNKNOWN 139 */ 140 141/** 142 * Track the state of Wifi connectivity. All event handling is done here, 143 * and all changes in connectivity state are initiated here. 144 * 145 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 146 * In the current implementation, we support concurrent wifi p2p and wifi operation. 147 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 148 * handles p2p operation. 149 * 150 * @hide 151 */ 152public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler, 153 WifiNative.WifiRssiEventHandler { 154 155 private static final String NETWORKTYPE = "WIFI"; 156 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 157 private static boolean DBG = false; 158 private static boolean VDBG = false; 159 private static boolean VVDBG = false; 160 private static boolean USE_PAUSE_SCANS = false; 161 private static boolean mLogMessages = false; 162 private static final String TAG = "WifiStateMachine"; 163 164 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 165 166 private static final String GOOGLE_OUI = "DA-A1-19"; 167 168 /* temporary debug flag - best network selection development */ 169 private static boolean PDBG = false; 170 171 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 172 * the corresponding BSSID. 173 */ 174 private boolean didBlackListBSSID = false; 175 176 /** 177 * Log with error attribute 178 * 179 * @param s is string log 180 */ 181 protected void loge(String s) { 182 Log.e(getName(), s); 183 } 184 protected void logd(String s) { 185 Log.d(getName(), s); 186 } 187 protected void log(String s) {; 188 Log.d(getName(), s); 189 } 190 191 private 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; 233 234 235 private int mHalFeatureSet = 0; 236 private static int mPnoResultFound = 0; 237 238 @Override 239 public void onPnoNetworkFound(ScanResult results[]) { 240 if (DBG) { 241 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 242 for (int i = 0; i < results.length; i++) { 243 Log.e(TAG, results[i].toString()); 244 } 245 } 246 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 247 } 248 249 public void processPnoNetworkFound(ScanResult results[]) { 250 ScanSettings settings = new ScanSettings(); 251 settings.channelSet = new ArrayList<WifiChannel>(); 252 StringBuilder sb = new StringBuilder(); 253 sb.append(""); 254 for (int i=0; i<results.length; i++) { 255 WifiChannel channel = new WifiChannel(); 256 channel.freqMHz = results[i].frequency; 257 settings.channelSet.add(channel); 258 sb.append(results[i].SSID).append(" "); 259 } 260 261 stopPnoOffload(); 262 263 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 264 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 265 mPnoResultFound ++; 266 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 267 int delay = 30 * 1000; 268 // reconfigure Pno after 1 minutes if we're still in disconnected state 269 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 270 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 271 (long)delay); 272 mRestartAutoJoinOffloadCounter++; 273 } 274 275 @Override 276 public void onRssiThresholdBreached(byte curRssi) { 277 if (DBG) { 278 Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi); 279 } 280 sendMessage(CMD_RSSI_THRESHOLD_BREACH, curRssi); 281 } 282 283 public void processRssiThreshold(byte curRssi, int reason) { 284 if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) { 285 Log.wtf(TAG, "processRssiThreshold: Invalid rssi " + curRssi); 286 return; 287 } 288 for (int i = 0; i < mRssiRanges.length; i++) { 289 if (curRssi < mRssiRanges[i]) { 290 // Assume sorted values(ascending order) for rssi, 291 // bounded by high(127) and low(-128) at extremeties 292 byte maxRssi = mRssiRanges[i]; 293 byte minRssi = mRssiRanges[i-1]; 294 // This value of hw has to be believed as this value is averaged and has breached 295 // the rssi thresholds and raised event to host. This would be eggregious if this 296 // value is invalid 297 mWifiInfo.setRssi((int) curRssi); 298 updateCapabilities(getCurrentWifiConfiguration()); 299 int ret = startRssiMonitoringOffload(maxRssi, minRssi); 300 Log.d(TAG, "Re-program RSSI thresholds for " + smToString(reason) + 301 ": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret); 302 break; 303 } 304 } 305 } 306 public void registerNetworkDisabled(int netId) { 307 // Restart legacy PNO and autojoin offload if needed 308 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 309 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 310 mRestartAutoJoinOffloadCounter++; 311 } 312 313 // Testing various network disconnect cases by sending lots of spurious 314 // disconnect to supplicant 315 private boolean testNetworkDisconnect = false; 316 317 private boolean mEnableRssiPolling = false; 318 private boolean mLegacyPnoEnabled = false; 319 private int mRssiPollToken = 0; 320 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 321 * In CONNECT_MODE, the STA can scan and connect to an access point 322 * In SCAN_ONLY_MODE, the STA can only scan for access points 323 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 324 */ 325 private int mOperationalMode = CONNECT_MODE; 326 private boolean mIsScanOngoing = false; 327 private boolean mIsFullScanOngoing = false; 328 private boolean mSendScanResultsBroadcast = false; 329 330 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 331 private WorkSource mScanWorkSource = null; 332 private static final int UNKNOWN_SCAN_SOURCE = -1; 333 private static final int SCAN_ALARM_SOURCE = -2; 334 private static final int ADD_OR_UPDATE_SOURCE = -3; 335 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 336 private static final int ENABLE_WIFI = -5; 337 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 338 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 339 340 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 341 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 342 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 343 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 344 345 /* Tracks if state machine has received any screen state change broadcast yet. 346 * We can miss one of these at boot. 347 */ 348 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 349 350 private boolean mBluetoothConnectionActive = false; 351 352 private PowerManager.WakeLock mSuspendWakeLock; 353 354 /** 355 * Interval in milliseconds between polling for RSSI 356 * and linkspeed information 357 */ 358 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 359 360 /** 361 * Interval in milliseconds between receiving a disconnect event 362 * while connected to a good AP, and handling the disconnect proper 363 */ 364 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 365 366 /** 367 * Delay between supplicant restarts upon failure to establish connection 368 */ 369 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 370 371 /** 372 * Number of times we attempt to restart supplicant 373 */ 374 private static final int SUPPLICANT_RESTART_TRIES = 5; 375 376 private int mSupplicantRestartCount = 0; 377 /* Tracks sequence number on stop failure message */ 378 private int mSupplicantStopFailureToken = 0; 379 380 /** 381 * Tether state change notification time out 382 */ 383 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 384 385 /* Tracks sequence number on a tether notification time out */ 386 private int mTetherToken = 0; 387 388 /** 389 * Driver start time out. 390 */ 391 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 392 393 /* Tracks sequence number on a driver time out */ 394 private int mDriverStartToken = 0; 395 396 /** 397 * Don't select new network when previous network selection is 398 * pending connection for this much time 399 */ 400 private static final int CONNECT_TIMEOUT_MSEC = 3000; 401 402 /** 403 * The link properties of the wifi interface. 404 * Do not modify this directly; use updateLinkProperties instead. 405 */ 406 private LinkProperties mLinkProperties; 407 408 /* Tracks sequence number on a periodic scan message */ 409 private int mPeriodicScanToken = 0; 410 411 // Wakelock held during wifi start/stop and driver load/unload 412 private PowerManager.WakeLock mWakeLock; 413 414 private Context mContext; 415 416 private final Object mDhcpResultsLock = new Object(); 417 private DhcpResults mDhcpResults; 418 419 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 420 private WifiInfo mWifiInfo; 421 private NetworkInfo mNetworkInfo; 422 private final NetworkCapabilities mDfltNetworkCapabilities; 423 private SupplicantStateTracker mSupplicantStateTracker; 424 private BaseDhcpStateMachine mDhcpStateMachine; 425 private boolean mDhcpActive = false; 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 (VDBG) { 484 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 485 } 486 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 487 mTargetRoamBSSID = bssid; 488 mWifiConfigStore.saveWifiConfigBSSID(config); 489 return ret; 490 } 491 492 /** 493 * set Config's default BSSID (for association purpose) 494 * @param config config need set BSSID 495 * @param bssid default BSSID to assocaite with when connect to this network 496 * @return false -- does not change the current default BSSID of the configure 497 * true -- change the current default BSSID of the configur 498 */ 499 private boolean setTargetBssid(WifiConfiguration config, String bssid) { 500 if (config == null) { 501 return false; 502 } 503 if (config.BSSID != null) { 504 bssid = config.BSSID; 505 if (DBG) { 506 Log.d(TAG, "force BSSID to " + bssid + "due to config"); 507 } 508 } 509 510 if (bssid == null) { 511 bssid = "any"; 512 } 513 514 String networkSelectionBSSID = config.getNetworkSelectionStatus() 515 .getNetworkSelectionBSSID(); 516 if (networkSelectionBSSID != null && networkSelectionBSSID.equals(bssid)) { 517 if (DBG) { 518 Log.d(TAG, "Current prefered BSSID is same as target"); 519 return false; 520 } 521 } 522 523 if (DBG) { 524 Log.d(TAG, "target set to " + config.SSID + ":" + bssid); 525 } 526 527 config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); 528 mTargetRoamBSSID = bssid; 529 mWifiConfigStore.saveWifiConfigBSSID(config); 530 return true; 531 } 532 /** 533 * Save the UID correctly depending on if this is a new or existing network. 534 * @return true if operation is authorized, false otherwise 535 */ 536 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 537 if (!mWifiConfigStore.isNetworkConfigured(config)) { 538 config.creatorUid = uid; 539 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 540 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 541 return false; 542 } 543 544 config.lastUpdateUid = uid; 545 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 546 547 return true; 548 549 } 550 551 /** 552 * Checks to see if user has specified if the apps configuration is connectable. 553 * If the user hasn't specified we query the user and return true. 554 * 555 * @param message The message to be deferred 556 * @param netId Network id of the configuration to check against 557 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 558 * CONFIG_OVERRIDE_PERMISSION 559 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 560 */ 561 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 562 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 563 564 // We can only evaluate saved configurations. 565 if (config == null) { 566 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 567 return true; 568 } 569 570 switch (config.userApproved) { 571 case WifiConfiguration.USER_APPROVED: 572 case WifiConfiguration.USER_BANNED: 573 return false; 574 case WifiConfiguration.USER_PENDING: 575 default: // USER_UNSPECIFIED 576 /* the intention was to ask user here; but a dialog box is * 577 * too invasive; so we are going to allow connection for now */ 578 config.userApproved = WifiConfiguration.USER_APPROVED; 579 return false; 580 } 581 } 582 583 /** 584 * Subset of link properties coming from netlink. 585 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 586 * and domains obtained from router advertisements (RFC 6106). 587 */ 588 private NetlinkTracker mNetlinkTracker; 589 590 private IpReachabilityMonitor mIpReachabilityMonitor; 591 592 private AlarmManager mAlarmManager; 593 private PendingIntent mScanIntent; 594 private PendingIntent mDriverStopIntent; 595 private PendingIntent mPnoIntent; 596 597 private int mDisconnectedPnoAlarmCount = 0; 598 /* Tracks current frequency mode */ 599 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 600 601 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 602 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 603 604 // Channel for sending replies. 605 private AsyncChannel mReplyChannel = new AsyncChannel(); 606 607 private WifiP2pServiceImpl mWifiP2pServiceImpl; 608 609 // Used to initiate a connection with WifiP2pService 610 private AsyncChannel mWifiP2pChannel; 611 private AsyncChannel mWifiApConfigChannel; 612 613 private WifiScanner mWifiScanner; 614 615 private int mConnectionRequests = 0; 616 private WifiNetworkFactory mNetworkFactory; 617 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 618 private WifiNetworkAgent mNetworkAgent; 619 620 private String[] mWhiteListedSsids = null; 621 622 private byte[] mRssiRanges; 623 624 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 625 // We should really persist that into the networkHistory.txt file, and read it back when 626 // WifiStateMachine starts up 627 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 628 629 // Used to filter out requests we couldn't possibly satisfy. 630 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 631 632 /* The base for wifi message types */ 633 static final int BASE = Protocol.BASE_WIFI; 634 /* Start the supplicant */ 635 static final int CMD_START_SUPPLICANT = BASE + 11; 636 /* Stop the supplicant */ 637 static final int CMD_STOP_SUPPLICANT = BASE + 12; 638 /* Start the driver */ 639 static final int CMD_START_DRIVER = BASE + 13; 640 /* Stop the driver */ 641 static final int CMD_STOP_DRIVER = BASE + 14; 642 /* Indicates Static IP succeeded */ 643 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 644 /* Indicates Static IP failed */ 645 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 646 /* Indicates supplicant stop failed */ 647 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 648 /* A delayed message sent to start driver when it fail to come up */ 649 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 650 651 /* Start the soft access point */ 652 static final int CMD_START_AP = BASE + 21; 653 /* Indicates soft ap start succeeded */ 654 static final int CMD_START_AP_SUCCESS = BASE + 22; 655 /* Indicates soft ap start failed */ 656 static final int CMD_START_AP_FAILURE = BASE + 23; 657 /* Stop the soft access point */ 658 static final int CMD_STOP_AP = BASE + 24; 659 /* Set the soft access point configuration */ 660 static final int CMD_SET_AP_CONFIG = BASE + 25; 661 /* Soft access point configuration set completed */ 662 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 663 /* Request the soft access point configuration */ 664 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 665 /* Response to access point configuration request */ 666 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 667 /* Invoked when getting a tether state change notification */ 668 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 669 /* A delayed message sent to indicate tether state change failed to arrive */ 670 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 671 672 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 673 674 /* Supplicant commands */ 675 /* Is supplicant alive ? */ 676 static final int CMD_PING_SUPPLICANT = BASE + 51; 677 /* Add/update a network configuration */ 678 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 679 /* Delete a network */ 680 static final int CMD_REMOVE_NETWORK = BASE + 53; 681 /* Enable a network. The device will attempt a connection to the given network. */ 682 static final int CMD_ENABLE_NETWORK = BASE + 54; 683 /* Enable all networks */ 684 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 685 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 686 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 687 /* Clear the blacklist network list */ 688 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 689 /* Save configuration */ 690 static final int CMD_SAVE_CONFIG = BASE + 58; 691 /* Get configured networks */ 692 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 693 /* Get available frequencies */ 694 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 695 /* Get adaptors */ 696 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 697 /* Get configured networks with real preSharedKey */ 698 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 699 /* Get Link Layer Stats thru HAL */ 700 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 701 /* Supplicant commands after driver start*/ 702 /* Initiate a scan */ 703 static final int CMD_START_SCAN = BASE + 71; 704 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 705 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 706 /* Disconnect from a network */ 707 static final int CMD_DISCONNECT = BASE + 73; 708 /* Reconnect to a network */ 709 static final int CMD_RECONNECT = BASE + 74; 710 /* Reassociate to a network */ 711 static final int CMD_REASSOCIATE = BASE + 75; 712 /* Get Connection Statistis */ 713 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 714 715 /* Controls suspend mode optimizations 716 * 717 * When high perf mode is enabled, suspend mode optimizations are disabled 718 * 719 * When high perf mode is disabled, suspend mode optimizations are enabled 720 * 721 * Suspend mode optimizations include: 722 * - packet filtering 723 * - turn off roaming 724 * - DTIM wake up settings 725 */ 726 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 727 /* Set the country code */ 728 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 729 /* Enables RSSI poll */ 730 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 731 /* RSSI poll */ 732 static final int CMD_RSSI_POLL = BASE + 83; 733 /* Set up packet filtering */ 734 static final int CMD_START_PACKET_FILTERING = BASE + 84; 735 /* Clear packet filter */ 736 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 737 /* Enable suspend mode optimizations in the driver */ 738 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 739 /* Delayed NETWORK_DISCONNECT */ 740 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 741 /* When there are no saved networks, we do a periodic scan to notify user of 742 * an open network */ 743 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 744 /* Test network Disconnection NETWORK_DISCONNECT */ 745 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 746 747 private int testNetworkDisconnectCounter = 0; 748 749 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 750 static final int MULTICAST_V6 = 1; 751 static final int MULTICAST_V4 = 0; 752 753 /* Set the frequency band */ 754 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 755 /* Enable TDLS on a specific MAC address */ 756 static final int CMD_ENABLE_TDLS = BASE + 92; 757 /* DHCP/IP configuration watchdog */ 758 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 759 760 /** 761 * Watchdog for protecting against b/16823537 762 * Leave time for 4-way handshake to succeed 763 */ 764 static final int ROAM_GUARD_TIMER_MSEC = 15000; 765 766 int roamWatchdogCount = 0; 767 /* Roam state watchdog */ 768 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 769 /* Screen change intent handling */ 770 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 771 772 /* Disconnecting state watchdog */ 773 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 774 775 /* Remove a packages associated configrations */ 776 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 777 778 /* Disable an ephemeral network */ 779 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 780 781 /* Get matching network */ 782 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 783 784 /* alert from firmware */ 785 static final int CMD_FIRMWARE_ALERT = BASE + 100; 786 787 /** 788 * Make this timer 40 seconds, which is about the normal DHCP timeout. 789 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 790 * for more than 30 seconds. 791 */ 792 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 793 794 int obtainingIpWatchdogCount = 0; 795 796 /* Commands from/to the SupplicantStateTracker */ 797 /* Reset the supplicant state tracker */ 798 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 799 800 int disconnectingWatchdogCount = 0; 801 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 802 803 /* P2p commands */ 804 /* We are ok with no response here since we wont do much with it anyway */ 805 public static final int CMD_ENABLE_P2P = BASE + 131; 806 /* In order to shut down supplicant cleanly, we wait till p2p has 807 * been disabled */ 808 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 809 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 810 811 public static final int CMD_BOOT_COMPLETED = BASE + 134; 812 813 /* We now have a valid IP configuration. */ 814 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 815 /* We no longer have a valid IP configuration. */ 816 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 817 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 818 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 819 820 /* Supplicant is trying to associate to a given BSSID */ 821 static final int CMD_TARGET_BSSID = BASE + 141; 822 823 /* Reload all networks and reconnect */ 824 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 825 826 static final int CMD_AUTO_CONNECT = BASE + 143; 827 828 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 829 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 830 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 831 832 static final int CMD_UNWANTED_NETWORK = BASE + 144; 833 834 static final int CMD_AUTO_ROAM = BASE + 145; 835 836 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 837 838 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 839 840 static final int CMD_NETWORK_STATUS = BASE + 148; 841 842 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 843 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 844 845 /* Remove a packages associated configrations */ 846 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 847 848 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 849 850 /* used to restart PNO when it was stopped due to association attempt */ 851 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 852 853 static int mRestartAutoJoinOffloadCounter = 0; 854 855 /* used to log if PNO was started */ 856 static final int CMD_STARTED_PNO_DBG = BASE + 155; 857 858 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 859 860 /* used to log if PNO was started */ 861 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 862 863 /* used to log if GSCAN was started */ 864 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 865 866 /* used to offload sending IP packet */ 867 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 868 869 /* used to stop offload sending IP packet */ 870 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 871 872 /* used to start rssi monitoring in hw */ 873 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 874 875 /* used to stop rssi moniroting in hw */ 876 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 877 878 /* used to indicated RSSI threshold breach in hw */ 879 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 880 881 882 883 /* Wifi state machine modes of operation */ 884 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 885 public static final int CONNECT_MODE = 1; 886 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 887 public static final int SCAN_ONLY_MODE = 2; 888 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 889 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 890 891 private static final int SUCCESS = 1; 892 private static final int FAILURE = -1; 893 894 /* Tracks if suspend optimizations need to be disabled by DHCP, 895 * screen or due to high perf mode. 896 * When any of them needs to disable it, we keep the suspend optimizations 897 * disabled 898 */ 899 private int mSuspendOptNeedsDisabled = 0; 900 901 private static final int SUSPEND_DUE_TO_DHCP = 1; 902 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 903 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 904 905 /* Tracks if user has enabled suspend optimizations through settings */ 906 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 907 908 /** 909 * Default framework scan interval in milliseconds. This is used in the scenario in which 910 * wifi chipset does not support background scanning to set up a 911 * periodic wake up scan so that the device can connect to a new access 912 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 913 * override this. 914 */ 915 private final int mDefaultFrameworkScanIntervalMs; 916 917 918 /** 919 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 920 */ 921 private final int mNoNetworksPeriodicScan; 922 923 /** 924 * Supplicant scan interval in milliseconds. 925 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 926 * from the default config if the setting is not set 927 */ 928 private long mSupplicantScanIntervalMs; 929 930 /** 931 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 932 */ 933 private long lastFullBandConnectedTimeMilli; 934 935 /** 936 * time interval to the next full band scan we will perform for 937 * autojoin while connected with screen lit 938 */ 939 private long fullBandConnectedTimeIntervalMilli; 940 941 /** 942 * max time interval to the next full band scan we will perform for 943 * autojoin while connected with screen lit 944 * Max time is 5 minutes 945 */ 946 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 947 948 /** 949 * Minimum time interval between enabling all networks. 950 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 951 * due to enabling every time. We add a threshold to avoid this. 952 */ 953 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 954 private long mLastEnableAllNetworksTime; 955 956 int mRunningBeaconCount = 0; 957 958 959 // config option that indicate whether or not to reset country code to default when 960 // cellular radio indicates country code loss 961 private boolean mRevertCountryCodeOnCellularLoss = false; 962 963 private String mDefaultCountryCode; 964 965 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 966 967 // Supplicant doesn't like setting the same country code multiple times (it may drop 968 // currently connected network), so we save the current device set country code here to avoid 969 // redundency 970 private String mDriverSetCountryCode = null; 971 972 /* Default parent state */ 973 private State mDefaultState = new DefaultState(); 974 /* Temporary initial state */ 975 private State mInitialState = new InitialState(); 976 /* Driver loaded, waiting for supplicant to start */ 977 private State mSupplicantStartingState = new SupplicantStartingState(); 978 /* Driver loaded and supplicant ready */ 979 private State mSupplicantStartedState = new SupplicantStartedState(); 980 /* Waiting for supplicant to stop and monitor to exit */ 981 private State mSupplicantStoppingState = new SupplicantStoppingState(); 982 /* Driver start issued, waiting for completed event */ 983 private State mDriverStartingState = new DriverStartingState(); 984 /* Driver started */ 985 private State mDriverStartedState = new DriverStartedState(); 986 /* Wait until p2p is disabled 987 * This is a special state which is entered right after we exit out of DriverStartedState 988 * before transitioning to another state. 989 */ 990 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 991 /* Driver stopping */ 992 private State mDriverStoppingState = new DriverStoppingState(); 993 /* Driver stopped */ 994 private State mDriverStoppedState = new DriverStoppedState(); 995 /* Scan for networks, no connection will be established */ 996 private State mScanModeState = new ScanModeState(); 997 /* Connecting to an access point */ 998 private State mConnectModeState = new ConnectModeState(); 999 /* Connected at 802.11 (L2) level */ 1000 private State mL2ConnectedState = new L2ConnectedState(); 1001 /* fetching IP after connection to access point (assoc+auth complete) */ 1002 private State mObtainingIpState = new ObtainingIpState(); 1003 /* Waiting for link quality verification to be complete */ 1004 private State mVerifyingLinkState = new VerifyingLinkState(); 1005 /* Connected with IP addr */ 1006 private State mConnectedState = new ConnectedState(); 1007 /* Roaming */ 1008 private State mRoamingState = new RoamingState(); 1009 /* disconnect issued, waiting for network disconnect confirmation */ 1010 private State mDisconnectingState = new DisconnectingState(); 1011 /* Network is not connected, supplicant assoc+auth is not complete */ 1012 private State mDisconnectedState = new DisconnectedState(); 1013 /* Waiting for WPS to be completed*/ 1014 private State mWpsRunningState = new WpsRunningState(); 1015 1016 /* Soft ap is starting up */ 1017 private State mSoftApStartingState = new SoftApStartingState(); 1018 /* Soft ap is running */ 1019 private State mSoftApStartedState = new SoftApStartedState(); 1020 /* Soft ap is running and we are waiting for tether notification */ 1021 private State mTetheringState = new TetheringState(); 1022 /* Soft ap is running and we are tethered through connectivity service */ 1023 private State mTetheredState = new TetheredState(); 1024 /* Waiting for untether confirmation before stopping soft Ap */ 1025 private State mUntetheringState = new UntetheringState(); 1026 1027 1028 1029 private class WifiScanListener implements WifiScanner.ScanListener { 1030 @Override 1031 public void onSuccess() { 1032 Log.e(TAG, "WifiScanListener onSuccess"); 1033 }; 1034 @Override 1035 public void onFailure(int reason, String description) { 1036 Log.e(TAG, "WifiScanListener onFailure"); 1037 }; 1038 @Override 1039 public void onPeriodChanged(int periodInMs) { 1040 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1041 } 1042 @Override 1043 public void onResults(WifiScanner.ScanData[] results) { 1044 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1045 } 1046 @Override 1047 public void onFullResult(ScanResult fullScanResult) { 1048 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1049 } 1050 1051 WifiScanListener() {} 1052 } 1053 1054 WifiScanListener mWifiScanListener = new WifiScanListener(); 1055 1056 1057 private class TetherStateChange { 1058 ArrayList<String> available; 1059 ArrayList<String> active; 1060 1061 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1062 available = av; 1063 active = ac; 1064 } 1065 } 1066 1067 public static class SimAuthRequestData { 1068 int networkId; 1069 int protocol; 1070 String ssid; 1071 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1072 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1073 String[] data; 1074 } 1075 1076 /** 1077 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1078 * {@link WifiManager#WIFI_STATE_DISABLING}, 1079 * {@link WifiManager#WIFI_STATE_ENABLED}, 1080 * {@link WifiManager#WIFI_STATE_ENABLING}, 1081 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1082 */ 1083 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1084 1085 /** 1086 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1087 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1088 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1089 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1090 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1091 */ 1092 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1093 1094 private static final int SCAN_REQUEST = 0; 1095 private static final String ACTION_START_SCAN = 1096 "com.android.server.WifiManager.action.START_SCAN"; 1097 1098 private static final int PNO_START_REQUEST = 0; 1099 private static final String ACTION_START_PNO = 1100 "com.android.server.WifiManager.action.START_PNO"; 1101 1102 /** 1103 * Keep track of whether WIFI is running. 1104 */ 1105 private boolean mIsRunning = false; 1106 1107 /** 1108 * Keep track of whether we last told the battery stats we had started. 1109 */ 1110 private boolean mReportedRunning = false; 1111 1112 /** 1113 * Most recently set source of starting WIFI. 1114 */ 1115 private final WorkSource mRunningWifiUids = new WorkSource(); 1116 1117 /** 1118 * The last reported UIDs that were responsible for starting WIFI. 1119 */ 1120 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1121 1122 private final IBatteryStats mBatteryStats; 1123 1124 private String mTcpBufferSizes = null; 1125 1126 // Used for debug and stats gathering 1127 private static int sScanAlarmIntentCount = 0; 1128 1129 private static final int sFrameworkMinScanIntervalSaneValue = 10000; 1130 1131 private boolean mPnoEnabled; 1132 private boolean mLazyRoamEnabled; 1133 private long mGScanStartTimeMilli; 1134 private long mGScanPeriodMilli; 1135 1136 private FrameworkFacade mFacade; 1137 1138 public WifiStateMachine(Context context, WifiTrafficPoller trafficPoller, 1139 FrameworkFacade facade) { 1140 super("WifiStateMachine"); 1141 mContext = context; 1142 mFacade = facade; 1143 mWifiNative = WifiNative.getWlanNativeInterface(); 1144 1145 // TODO refactor WifiNative use of context out into it's own class 1146 mWifiNative.initContext(mContext); 1147 mInterfaceName = mWifiNative.getInterfaceName(); 1148 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1149 mBatteryStats = IBatteryStats.Stub.asInterface(mFacade.getService( 1150 BatteryStats.SERVICE_NAME)); 1151 1152 IBinder b = mFacade.getService(Context.NETWORKMANAGEMENT_SERVICE); 1153 mNwService = INetworkManagementService.Stub.asInterface(b); 1154 1155 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1156 PackageManager.FEATURE_WIFI_DIRECT); 1157 1158 mWifiConfigStore = new WifiConfigStore(context, this, mWifiNative, facade); 1159 1160 mWifiMonitor = WifiMonitor.getInstance(); 1161 1162 boolean enableFirmwareLogs = mContext.getResources().getBoolean( 1163 R.bool.config_wifi_enable_wifi_firmware_debugging); 1164 1165 if (enableFirmwareLogs) { 1166 mWifiLogger = facade.makeRealLogger(this, mWifiNative); 1167 } else { 1168 mWifiLogger = facade.makeBaseLogger(); 1169 } 1170 1171 mWifiInfo = new WifiInfo(); 1172 mWifiQualifiedNetworkSelector = new WifiQualifiedNetworkSelector( 1173 mWifiConfigStore, mContext, this, mWifiInfo); 1174 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1175 getHandler()); 1176 1177 mLinkProperties = new LinkProperties(); 1178 1179 IBinder s1 = mFacade.getService(Context.WIFI_P2P_SERVICE); 1180 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1181 1182 mNetworkInfo.setIsAvailable(false); 1183 mLastBssid = null; 1184 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1185 mLastSignalLevel = -1; 1186 1187 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1188 public void update() { 1189 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1190 } 1191 }); 1192 try { 1193 mNwService.registerObserver(mNetlinkTracker); 1194 } catch (RemoteException e) { 1195 loge("Couldn't register netlink tracker: " + e.toString()); 1196 } 1197 1198 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1199 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1200 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1201 1202 // Make sure the interval is not configured less than 10 seconds 1203 int period = mContext.getResources().getInteger( 1204 R.integer.config_wifi_framework_scan_interval); 1205 if (period < sFrameworkMinScanIntervalSaneValue) { 1206 period = sFrameworkMinScanIntervalSaneValue; 1207 } 1208 mDefaultFrameworkScanIntervalMs = period; 1209 1210 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1211 R.integer.config_wifi_no_network_periodic_scan_interval); 1212 1213 mBackgroundScanSupported = mContext.getResources().getBoolean( 1214 R.bool.config_wifi_background_scan_support); 1215 1216 mPrimaryDeviceType = mContext.getResources().getString( 1217 R.string.config_wifi_p2p_device_type); 1218 1219 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1220 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1221 1222 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1223 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1224 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1225 } 1226 1227 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1228 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1229 "but there is no default country code!! Resetting ..."); 1230 mRevertCountryCodeOnCellularLoss = false; 1231 } else if (mRevertCountryCodeOnCellularLoss) { 1232 logd("initializing with and will revert to " + mDefaultCountryCode + " on MCC loss"); 1233 } 1234 1235 if (mRevertCountryCodeOnCellularLoss) { 1236 Settings.Global.putString(mContext.getContentResolver(), 1237 Settings.Global.WIFI_COUNTRY_CODE, mDefaultCountryCode); 1238 } 1239 1240 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1241 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1242 1243 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1244 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1245 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1246 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1247 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1248 // TODO - needs to be a bit more dynamic 1249 mDfltNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1250 1251 mContext.registerReceiver( 1252 new BroadcastReceiver() { 1253 @Override 1254 public void onReceive(Context context, Intent intent) { 1255 ArrayList<String> available = intent.getStringArrayListExtra( 1256 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1257 ArrayList<String> active = intent.getStringArrayListExtra( 1258 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1259 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1260 } 1261 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1262 1263 mContext.registerReceiver( 1264 new BroadcastReceiver() { 1265 @Override 1266 public void onReceive(Context context, Intent intent) { 1267 sScanAlarmIntentCount++; // Used for debug only 1268 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1269 if (VDBG) 1270 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1271 } 1272 }, 1273 new IntentFilter(ACTION_START_SCAN)); 1274 1275 mContext.registerReceiver( 1276 new BroadcastReceiver() { 1277 @Override 1278 public void onReceive(Context context, Intent intent) { 1279 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1280 mRestartAutoJoinOffloadCounter, "pno alarm"); 1281 if (DBG) 1282 logd("PNO START ALARM sent"); 1283 } 1284 }, 1285 new IntentFilter(ACTION_START_PNO)); 1286 1287 1288 IntentFilter filter = new IntentFilter(); 1289 filter.addAction(Intent.ACTION_SCREEN_ON); 1290 filter.addAction(Intent.ACTION_SCREEN_OFF); 1291 mContext.registerReceiver( 1292 new BroadcastReceiver() { 1293 @Override 1294 public void onReceive(Context context, Intent intent) { 1295 String action = intent.getAction(); 1296 1297 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1298 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1299 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1300 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1301 } 1302 } 1303 }, filter); 1304 1305 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1306 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1307 new ContentObserver(getHandler()) { 1308 @Override 1309 public void onChange(boolean selfChange) { 1310 mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext, 1311 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1312 } 1313 }); 1314 1315 mContext.registerReceiver( 1316 new BroadcastReceiver() { 1317 @Override 1318 public void onReceive(Context context, Intent intent) { 1319 sendMessage(CMD_BOOT_COMPLETED); 1320 } 1321 }, 1322 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1323 1324 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1325 1326 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1327 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1328 1329 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1330 mSuspendWakeLock.setReferenceCounted(false); 1331 1332 mTcpBufferSizes = mContext.getResources().getString( 1333 com.android.internal.R.string.config_wifi_tcp_buffers); 1334 1335 addState(mDefaultState); 1336 addState(mInitialState, mDefaultState); 1337 addState(mSupplicantStartingState, mDefaultState); 1338 addState(mSupplicantStartedState, mDefaultState); 1339 addState(mDriverStartingState, mSupplicantStartedState); 1340 addState(mDriverStartedState, mSupplicantStartedState); 1341 addState(mScanModeState, mDriverStartedState); 1342 addState(mConnectModeState, mDriverStartedState); 1343 addState(mL2ConnectedState, mConnectModeState); 1344 addState(mObtainingIpState, mL2ConnectedState); 1345 addState(mVerifyingLinkState, mL2ConnectedState); 1346 addState(mConnectedState, mL2ConnectedState); 1347 addState(mRoamingState, mL2ConnectedState); 1348 addState(mDisconnectingState, mConnectModeState); 1349 addState(mDisconnectedState, mConnectModeState); 1350 addState(mWpsRunningState, mConnectModeState); 1351 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1352 addState(mDriverStoppingState, mSupplicantStartedState); 1353 addState(mDriverStoppedState, mSupplicantStartedState); 1354 addState(mSupplicantStoppingState, mDefaultState); 1355 addState(mSoftApStartingState, mDefaultState); 1356 addState(mSoftApStartedState, mDefaultState); 1357 addState(mTetheringState, mSoftApStartedState); 1358 addState(mTetheredState, mSoftApStartedState); 1359 addState(mUntetheringState, mSoftApStartedState); 1360 1361 setInitialState(mInitialState); 1362 1363 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1364 setLogOnlyTransitions(false); 1365 if (VDBG) setDbg(true); 1366 1367 //start the state machine 1368 start(); 1369 1370 mWifiMonitor.registerHandler(mInterfaceName, CMD_TARGET_BSSID, getHandler()); 1371 mWifiMonitor.registerHandler(mInterfaceName, CMD_ASSOCIATED_BSSID, getHandler()); 1372 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ANQP_DONE_EVENT, getHandler()); 1373 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ASSOCIATION_REJECTION_EVENT, 1374 getHandler()); 1375 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.AUTHENTICATION_FAILURE_EVENT, 1376 getHandler()); 1377 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.DRIVER_HUNG_EVENT, getHandler()); 1378 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_DONE_EVENT, getHandler()); 1379 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_START_EVENT, 1380 getHandler()); 1381 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.HS20_DEAUTH_EVENT, getHandler()); 1382 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.HS20_REMEDIATION_EVENT, 1383 getHandler()); 1384 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_CONNECTION_EVENT, 1385 getHandler()); 1386 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_DISCONNECTION_EVENT, 1387 getHandler()); 1388 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.RX_HS20_ANQP_ICON_EVENT, 1389 getHandler()); 1390 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_FAILED_EVENT, getHandler()); 1391 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SCAN_RESULTS_EVENT, getHandler()); 1392 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_REENABLED, getHandler()); 1393 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SSID_TEMP_DISABLED, getHandler()); 1394 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_CONNECTION_EVENT, getHandler()); 1395 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_DISCONNECTION_EVENT, 1396 getHandler()); 1397 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT, 1398 getHandler()); 1399 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_IDENTITY, getHandler()); 1400 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_SIM_AUTH, getHandler()); 1401 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_FAIL_EVENT, getHandler()); 1402 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_OVERLAP_EVENT, getHandler()); 1403 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_SUCCESS_EVENT, getHandler()); 1404 mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.WPS_TIMEOUT_EVENT, getHandler()); 1405 1406 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1407 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1408 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1409 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1410 } 1411 1412 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1413 Intent intent = new Intent(action, null); 1414 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1415 intent.setPackage("android"); 1416 return mFacade.getBroadcast(mContext, requestCode, intent, 0); 1417 } 1418 1419 private int mVerboseLoggingLevel = 0; 1420 1421 int getVerboseLoggingLevel() { 1422 return mVerboseLoggingLevel; 1423 } 1424 1425 void enableVerboseLogging(int verbose) { 1426 mVerboseLoggingLevel = verbose; 1427 if (verbose > 0) { 1428 DBG = true; 1429 VDBG = true; 1430 PDBG = true; 1431 mLogMessages = true; 1432 mWifiNative.setSupplicantLogLevel("DEBUG"); 1433 } else { 1434 DBG = false; 1435 VDBG = false; 1436 PDBG = false; 1437 mLogMessages = false; 1438 mWifiNative.setSupplicantLogLevel("INFO"); 1439 } 1440 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1441 mWifiMonitor.enableVerboseLogging(verbose); 1442 mWifiNative.enableVerboseLogging(verbose); 1443 mWifiConfigStore.enableVerboseLogging(verbose); 1444 mSupplicantStateTracker.enableVerboseLogging(verbose); 1445 mWifiQualifiedNetworkSelector.enableVerboseLogging(verbose); 1446 } 1447 1448 public void setHalBasedAutojoinOffload(int enabled) { 1449 // Shoult be used for debug only, triggered form developper settings 1450 // enabling HAl based PNO dynamically is not safe and not a normal operation 1451 mHalBasedPnoEnableInDevSettings = enabled > 0; 1452 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1453 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1454 sendMessage(CMD_DISCONNECT); 1455 } 1456 1457 int getHalBasedAutojoinOffload() { 1458 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1459 } 1460 1461 boolean useHalBasedAutoJoinOffload() { 1462 // all three settings need to be true: 1463 // - developper settings switch 1464 // - driver support 1465 // - config option 1466 return mHalBasedPnoEnableInDevSettings 1467 && mHalBasedPnoDriverSupported 1468 && mWifiConfigStore.enableHalBasedPno.get(); 1469 } 1470 1471 boolean allowFullBandScanAndAssociated() { 1472 1473 if (!getEnableAutoJoinWhenAssociated()) { 1474 if (DBG) { 1475 Log.e(TAG, "allowFullBandScanAndAssociated: " 1476 + " enableAutoJoinWhenAssociated : disallow"); 1477 } 1478 return false; 1479 } 1480 1481 if (mWifiInfo.txSuccessRate > 1482 mWifiConfigStore.maxTxPacketForFullScans 1483 || mWifiInfo.rxSuccessRate > 1484 mWifiConfigStore.maxRxPacketForFullScans) { 1485 if (DBG) { 1486 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1487 + mWifiInfo.txSuccessRate + " rx " 1488 + mWifiInfo.rxSuccessRate 1489 + " allow scan with traffic " + getAllowScansWithTraffic()); 1490 } 1491 // Too much traffic at the interface, hence no full band scan 1492 if (getAllowScansWithTraffic() == 0) { 1493 return false; 1494 } 1495 } 1496 1497 if (getCurrentState() != mConnectedState) { 1498 if (DBG) { 1499 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1500 } 1501 return false; 1502 } 1503 1504 return true; 1505 } 1506 1507 long mLastScanPermissionUpdate = 0; 1508 boolean mConnectedModeGScanOffloadStarted = false; 1509 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1510 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1511 // we want to throttle the GScan Stop->Start transition 1512 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1513 void updateAssociatedScanPermission() { 1514 1515 if (useHalBasedAutoJoinOffload()) { 1516 boolean allowed = allowFullBandScanAndAssociated(); 1517 1518 long now = System.currentTimeMillis(); 1519 if (mConnectedModeGScanOffloadStarted && !allowed) { 1520 if (DBG) { 1521 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1522 } 1523 stopPnoOffload(); 1524 stopGScan(" useHalBasedAutoJoinOffload"); 1525 } 1526 if (!mConnectedModeGScanOffloadStarted && allowed) { 1527 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1528 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1529 // to look for 5GHz BSSIDs and better networks 1530 if (DBG) { 1531 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1532 } 1533 startGScanConnectedModeOffload("updatePermission " 1534 + (now - mLastScanPermissionUpdate) + "ms"); 1535 mLastScanPermissionUpdate = now; 1536 } 1537 } 1538 } 1539 } 1540 1541 private int mAggressiveHandover = 0; 1542 1543 int getAggressiveHandover() { 1544 return mAggressiveHandover; 1545 } 1546 1547 void enableAggressiveHandover(int enabled) { 1548 mAggressiveHandover = enabled; 1549 } 1550 1551 public void clearANQPCache() { 1552 mWifiConfigStore.trimANQPCache(true); 1553 } 1554 1555 public void setAllowScansWithTraffic(int enabled) { 1556 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1557 } 1558 1559 public int getAllowScansWithTraffic() { 1560 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1561 } 1562 1563 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1564 boolean old_state = getEnableAutoJoinWhenAssociated(); 1565 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1566 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1567 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1568 null); 1569 } 1570 return true; 1571 } 1572 1573 public boolean getEnableAutoJoinWhenAssociated() { 1574 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1575 } 1576 /* 1577 * 1578 * Framework scan control 1579 */ 1580 1581 private boolean mAlarmEnabled = false; 1582 1583 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1584 1585 private void setScanAlarm(boolean enabled) { 1586 if (PDBG) { 1587 String state; 1588 if (enabled) state = "enabled"; else state = "disabled"; 1589 logd("setScanAlarm " + state 1590 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1591 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1592 } 1593 if (mBackgroundScanSupported == false) { 1594 // Scan alarm is only used for background scans if they are not 1595 // offloaded to the wifi chipset, hence enable the scan alarm 1596 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1597 enabled = true; 1598 } 1599 1600 if (enabled == mAlarmEnabled) return; 1601 if (enabled) { 1602 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1603 /* going to wake up the host processor to look for access points */ 1604 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1605 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1606 mScanIntent); 1607 mAlarmEnabled = true; 1608 } else { 1609 mAlarmManager.cancel(mScanIntent); 1610 mAlarmEnabled = false; 1611 } 1612 } 1613 1614 private void cancelDelayedScan() { 1615 mDelayedScanCounter.incrementAndGet(); 1616 } 1617 1618 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1619 ScanSettings settings, WorkSource workSource) { 1620 1621 if (counter != mDelayedScanCounter.get()) { 1622 return false; 1623 } 1624 if (restart) 1625 startDelayedScan(milli, settings, workSource); 1626 return true; 1627 } 1628 1629 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1630 if (milli <= 0) return; 1631 /** 1632 * The cases where the scan alarm should be run are : 1633 * - DisconnectedState && screenOn => used delayed timer 1634 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1635 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1636 * - ConnectedState && screenOn => used delayed timer 1637 */ 1638 1639 mDelayedScanCounter.incrementAndGet(); 1640 if (mScreenOn && 1641 (getCurrentState() == mDisconnectedState 1642 || getCurrentState() == mConnectedState)) { 1643 Bundle bundle = new Bundle(); 1644 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1645 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1646 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1647 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1648 mDelayedScanCounter.get(), bundle, milli); 1649 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1650 } else if (mBackgroundScanSupported == false 1651 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1652 setScanAlarm(true); 1653 if (DBG) logd("startDelayedScan start scan alarm -> " 1654 + mDelayedScanCounter + " milli " + milli); 1655 } else { 1656 if (DBG) logd("startDelayedScan unhandled -> " 1657 + mDelayedScanCounter + " milli " + milli); 1658 } 1659 } 1660 1661 private boolean setRandomMacOui() { 1662 String oui = mContext.getResources().getString(R.string.config_wifi_random_mac_oui); 1663 if (TextUtils.isEmpty(oui)) { 1664 oui = GOOGLE_OUI; 1665 } 1666 String[] ouiParts = oui.split("-"); 1667 byte[] ouiBytes = new byte[3]; 1668 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1669 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1670 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1671 1672 logd("Setting OUI to " + oui); 1673 return mWifiNative.setScanningMacOui(ouiBytes); 1674 } 1675 1676 /** 1677 * ****************************************************** 1678 * Methods exposed for public use 1679 * ****************************************************** 1680 */ 1681 1682 public Messenger getMessenger() { 1683 return new Messenger(getHandler()); 1684 } 1685 1686 /** 1687 * TODO: doc 1688 */ 1689 public boolean syncPingSupplicant(AsyncChannel channel) { 1690 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1691 boolean result = (resultMsg.arg1 != FAILURE); 1692 resultMsg.recycle(); 1693 return result; 1694 } 1695 1696 /** 1697 * When settings allowing making use of untrusted networks change, trigger a scan 1698 * so as to kick of autojoin. 1699 */ 1700 public void startScanForUntrustedSettingChange() { 1701 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1702 } 1703 1704 /** 1705 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1706 * given to callingUid. 1707 * 1708 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1709 * workSource is specified. 1710 * @param workSource If not null, blame is given to workSource. 1711 * @param settings Scan settings, see {@link ScanSettings}. 1712 */ 1713 public void startScan(int callingUid, int scanCounter, 1714 ScanSettings settings, WorkSource workSource) { 1715 Bundle bundle = new Bundle(); 1716 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1717 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1718 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1719 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1720 } 1721 1722 // called from BroadcastListener 1723 1724 /** 1725 * Start reading new scan data 1726 * Data comes in as: 1727 * "scancount=5\n" 1728 * "nextcount=5\n" 1729 * "apcount=3\n" 1730 * "trunc\n" (optional) 1731 * "bssid=...\n" 1732 * "ssid=...\n" 1733 * "freq=...\n" (in Mhz) 1734 * "level=...\n" 1735 * "dist=...\n" (in cm) 1736 * "distsd=...\n" (standard deviation, in cm) 1737 * "====" 1738 * "bssid=...\n" 1739 * etc 1740 * "====" 1741 * "bssid=...\n" 1742 * etc 1743 * "%%%%" 1744 * "apcount=2\n" 1745 * "bssid=...\n" 1746 * etc 1747 * "%%%% 1748 * etc 1749 * "----" 1750 */ 1751 private final static boolean DEBUG_PARSE = false; 1752 1753 private long mDisconnectedTimeStamp = 0; 1754 1755 public long getDisconnectedTimeMilli() { 1756 if (getCurrentState() == mDisconnectedState 1757 && mDisconnectedTimeStamp != 0) { 1758 long now_ms = System.currentTimeMillis(); 1759 return now_ms - mDisconnectedTimeStamp; 1760 } 1761 return 0; 1762 } 1763 1764 // Keeping track of scan requests 1765 private long lastStartScanTimeStamp = 0; 1766 private long lastScanDuration = 0; 1767 // Last connect attempt is used to prevent scan requests: 1768 // - for a period of 10 seconds after attempting to connect 1769 private long lastConnectAttemptTimestamp = 0; 1770 private Set<Integer> lastScanFreqs = null; 1771 1772 // For debugging, keep track of last message status handling 1773 // TODO, find an equivalent mechanism as part of parent class 1774 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1775 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1776 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1777 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1778 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1779 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1780 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1781 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1782 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1783 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1784 1785 private int messageHandlingStatus = 0; 1786 1787 //TODO: this is used only to track connection attempts, however the link state and packet per 1788 //TODO: second logic should be folded into that 1789 private boolean checkOrDeferScanAllowed(Message msg) { 1790 long now = System.currentTimeMillis(); 1791 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1792 Message dmsg = Message.obtain(msg); 1793 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1794 return false; 1795 } 1796 return true; 1797 } 1798 1799 private int mOnTime = 0; 1800 private int mTxTime = 0; 1801 private int mRxTime = 0; 1802 private int mOnTimeStartScan = 0; 1803 private int mTxTimeStartScan = 0; 1804 private int mRxTimeStartScan = 0; 1805 private int mOnTimeScan = 0; 1806 private int mTxTimeScan = 0; 1807 private int mRxTimeScan = 0; 1808 private int mOnTimeThisScan = 0; 1809 private int mTxTimeThisScan = 0; 1810 private int mRxTimeThisScan = 0; 1811 1812 private int mOnTimeScreenStateChange = 0; 1813 private int mOnTimeAtLastReport = 0; 1814 private long lastOntimeReportTimeStamp = 0; 1815 private long lastScreenStateChangeTimeStamp = 0; 1816 private int mOnTimeLastReport = 0; 1817 private int mTxTimeLastReport = 0; 1818 private int mRxTimeLastReport = 0; 1819 1820 private long lastLinkLayerStatsUpdate = 0; 1821 1822 String reportOnTime() { 1823 long now = System.currentTimeMillis(); 1824 StringBuilder sb = new StringBuilder(); 1825 // Report stats since last report 1826 int on = mOnTime - mOnTimeLastReport; 1827 mOnTimeLastReport = mOnTime; 1828 int tx = mTxTime - mTxTimeLastReport; 1829 mTxTimeLastReport = mTxTime; 1830 int rx = mRxTime - mRxTimeLastReport; 1831 mRxTimeLastReport = mRxTime; 1832 int period = (int) (now - lastOntimeReportTimeStamp); 1833 lastOntimeReportTimeStamp = now; 1834 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1835 // Report stats since Screen State Changed 1836 on = mOnTime - mOnTimeScreenStateChange; 1837 period = (int) (now - lastScreenStateChangeTimeStamp); 1838 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1839 return sb.toString(); 1840 } 1841 1842 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1843 WifiLinkLayerStats stats = null; 1844 if (mWifiLinkLayerStatsSupported > 0) { 1845 String name = "wlan0"; 1846 stats = mWifiNative.getWifiLinkLayerStats(name); 1847 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1848 mWifiLinkLayerStatsSupported -= 1; 1849 } else if (stats != null) { 1850 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1851 mOnTime = stats.on_time; 1852 mTxTime = stats.tx_time; 1853 mRxTime = stats.rx_time; 1854 mRunningBeaconCount = stats.beacon_rx; 1855 } 1856 } 1857 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1858 long mTxPkts = mFacade.getTxPackets(mInterfaceName); 1859 long mRxPkts = mFacade.getRxPackets(mInterfaceName); 1860 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1861 } else { 1862 mWifiInfo.updatePacketRates(stats); 1863 } 1864 if (useHalBasedAutoJoinOffload()) { 1865 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1866 } 1867 return stats; 1868 } 1869 1870 void startRadioScanStats() { 1871 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1872 if (stats != null) { 1873 mOnTimeStartScan = stats.on_time; 1874 mTxTimeStartScan = stats.tx_time; 1875 mRxTimeStartScan = stats.rx_time; 1876 mOnTime = stats.on_time; 1877 mTxTime = stats.tx_time; 1878 mRxTime = stats.rx_time; 1879 } 1880 } 1881 1882 void closeRadioScanStats() { 1883 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1884 if (stats != null) { 1885 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1886 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1887 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1888 mOnTimeScan += mOnTimeThisScan; 1889 mTxTimeScan += mTxTimeThisScan; 1890 mRxTimeScan += mRxTimeThisScan; 1891 } 1892 } 1893 1894 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1895 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1896 if (ret != 0) { 1897 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1898 "): hardware error " + ret); 1899 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1900 } else { 1901 return ConnectivityManager.PacketKeepalive.SUCCESS; 1902 } 1903 } 1904 1905 int stopWifiIPPacketOffload(int slot) { 1906 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1907 if (ret != 0) { 1908 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1909 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1910 } else { 1911 return ConnectivityManager.PacketKeepalive.SUCCESS; 1912 } 1913 } 1914 1915 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1916 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1917 } 1918 1919 int stopRssiMonitoringOffload() { 1920 return mWifiNative.stopRssiMonitoring(); 1921 } 1922 1923 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1924 private void noteScanStart(int callingUid, WorkSource workSource) { 1925 if (lastStartScanTimeStamp != 0) { 1926 noteScanEnd(); 1927 } 1928 long now = System.currentTimeMillis(); 1929 lastStartScanTimeStamp = now; 1930 lastScanDuration = 0; 1931 if (DBG) { 1932 String ts = String.format("[%,d ms]", now); 1933 if (workSource != null) { 1934 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1935 + " uid " + Integer.toString(callingUid)); 1936 } else { 1937 if (DBG) logd(ts + " noteScanstart no scan source" 1938 + " uid " + Integer.toString(callingUid)); 1939 } 1940 } 1941 startRadioScanStats(); 1942 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1943 && callingUid != SCAN_ALARM_SOURCE) 1944 || workSource != null)) { 1945 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1946 1947 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1948 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1949 mScanWorkSource = new WorkSource(Process.WIFI_UID); 1950 } 1951 1952 try { 1953 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1954 } catch (RemoteException e) { 1955 log(e.toString()); 1956 } 1957 } 1958 } 1959 1960 private void noteScanEnd() { 1961 closeRadioScanStats(); 1962 long now = System.currentTimeMillis(); 1963 if (lastStartScanTimeStamp != 0) { 1964 lastScanDuration = now - lastStartScanTimeStamp; 1965 } 1966 lastStartScanTimeStamp = 0; 1967 if (DBG) { 1968 String ts = String.format("[%,d ms]", now); 1969 if (mScanWorkSource != null) 1970 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 1971 + " onTime=" + mOnTimeThisScan); 1972 else 1973 logd(ts + " noteScanEnd no scan source" 1974 + " onTime=" + mOnTimeThisScan); 1975 } 1976 if (mScanWorkSource != null) { 1977 try { 1978 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1979 } catch (RemoteException e) { 1980 log(e.toString()); 1981 } finally { 1982 mScanWorkSource = null; 1983 } 1984 } 1985 } 1986 1987 private void handleScanRequest(int type, Message message) { 1988 ScanSettings settings = null; 1989 WorkSource workSource = null; 1990 1991 // unbundle parameters 1992 Bundle bundle = (Bundle) message.obj; 1993 1994 if (bundle != null) { 1995 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1996 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1997 } 1998 1999 Set<Integer> freqs = null; 2000 if (settings != null && settings.channelSet != null) { 2001 freqs = new HashSet<Integer>(); 2002 for (WifiChannel channel : settings.channelSet) { 2003 freqs.add(channel.freqMHz); 2004 } 2005 } 2006 2007 // call wifi native to start the scan 2008 if (startScanNative(type, freqs)) { 2009 // only count battery consumption if scan request is accepted 2010 noteScanStart(message.arg1, workSource); 2011 // a full scan covers everything, clearing scan request buffer 2012 if (freqs == null) 2013 mBufferedScanMsg.clear(); 2014 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 2015 if (workSource != null) { 2016 // External worksource was passed along the scan request, 2017 // hence always send a broadcast 2018 mSendScanResultsBroadcast = true; 2019 } 2020 return; 2021 } 2022 2023 // if reach here, scan request is rejected 2024 2025 if (!mIsScanOngoing) { 2026 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2027 2028 // discard this request and pop up the next one 2029 if (mBufferedScanMsg.size() > 0) { 2030 sendMessage(mBufferedScanMsg.remove()); 2031 } 2032 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2033 } else if (!mIsFullScanOngoing) { 2034 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2035 // buffer the scan request to make sure specified channels will be scanned eventually 2036 if (freqs == null) 2037 mBufferedScanMsg.clear(); 2038 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2039 Message msg = obtainMessage(CMD_START_SCAN, 2040 message.arg1, message.arg2, bundle); 2041 mBufferedScanMsg.add(msg); 2042 } else { 2043 // if too many requests in buffer, combine them into a single full scan 2044 bundle = new Bundle(); 2045 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2046 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2047 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2048 mBufferedScanMsg.clear(); 2049 mBufferedScanMsg.add(msg); 2050 } 2051 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2052 } else { 2053 // mIsScanOngoing and mIsFullScanOngoing 2054 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2055 } 2056 } 2057 2058 2059 /** 2060 * return true iff scan request is accepted 2061 */ 2062 private boolean startScanNative(int type, Set<Integer> freqs) { 2063 if (mWifiNative.scan(type, freqs)) { 2064 mIsScanOngoing = true; 2065 mIsFullScanOngoing = (freqs == null); 2066 lastScanFreqs = freqs; 2067 return true; 2068 } 2069 return false; 2070 } 2071 2072 /** 2073 * TODO: doc 2074 */ 2075 public void setSupplicantRunning(boolean enable) { 2076 if (enable) { 2077 sendMessage(CMD_START_SUPPLICANT); 2078 } else { 2079 sendMessage(CMD_STOP_SUPPLICANT); 2080 } 2081 } 2082 2083 /** 2084 * TODO: doc 2085 */ 2086 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2087 if (enable) { 2088 sendMessage(CMD_START_AP, wifiConfig); 2089 } else { 2090 sendMessage(CMD_STOP_AP); 2091 } 2092 } 2093 2094 public void setWifiApConfiguration(WifiConfiguration config) { 2095 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2096 } 2097 2098 public WifiConfiguration syncGetWifiApConfiguration() { 2099 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2100 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2101 resultMsg.recycle(); 2102 return ret; 2103 } 2104 2105 /** 2106 * TODO: doc 2107 */ 2108 public int syncGetWifiState() { 2109 return mWifiState.get(); 2110 } 2111 2112 /** 2113 * TODO: doc 2114 */ 2115 public String syncGetWifiStateByName() { 2116 switch (mWifiState.get()) { 2117 case WIFI_STATE_DISABLING: 2118 return "disabling"; 2119 case WIFI_STATE_DISABLED: 2120 return "disabled"; 2121 case WIFI_STATE_ENABLING: 2122 return "enabling"; 2123 case WIFI_STATE_ENABLED: 2124 return "enabled"; 2125 case WIFI_STATE_UNKNOWN: 2126 return "unknown state"; 2127 default: 2128 return "[invalid state]"; 2129 } 2130 } 2131 2132 /** 2133 * TODO: doc 2134 */ 2135 public int syncGetWifiApState() { 2136 return mWifiApState.get(); 2137 } 2138 2139 /** 2140 * TODO: doc 2141 */ 2142 public String syncGetWifiApStateByName() { 2143 switch (mWifiApState.get()) { 2144 case WIFI_AP_STATE_DISABLING: 2145 return "disabling"; 2146 case WIFI_AP_STATE_DISABLED: 2147 return "disabled"; 2148 case WIFI_AP_STATE_ENABLING: 2149 return "enabling"; 2150 case WIFI_AP_STATE_ENABLED: 2151 return "enabled"; 2152 case WIFI_AP_STATE_FAILED: 2153 return "failed"; 2154 default: 2155 return "[invalid state]"; 2156 } 2157 } 2158 2159 boolean isConnected() { 2160 return getCurrentState() == mConnectedState; 2161 } 2162 2163 boolean isDisconnected() { 2164 return getCurrentState() == mDisconnectedState; 2165 } 2166 2167 public boolean isSupplicantTransientState() { 2168 SupplicantState SupplicantState = mWifiInfo.getSupplicantState(); 2169 if (SupplicantState == SupplicantState.ASSOCIATING 2170 || SupplicantState == SupplicantState.AUTHENTICATING 2171 || SupplicantState == SupplicantState.FOUR_WAY_HANDSHAKE 2172 || SupplicantState == SupplicantState.GROUP_HANDSHAKE) { 2173 2174 if (DBG) { 2175 Log.d(TAG, "Supplicant is under transient state: " + SupplicantState); 2176 } 2177 return true; 2178 } else { 2179 if (DBG) { 2180 Log.d(TAG, "Supplicant is under steady state: " + SupplicantState); 2181 } 2182 } 2183 2184 return false; 2185 } 2186 2187 public boolean isLinkDebouncing() { 2188 return linkDebouncing; 2189 } 2190 2191 /** 2192 * Get status information for the current connection, if any. 2193 * 2194 * @return a {@link WifiInfo} object containing information about the current connection 2195 */ 2196 public WifiInfo syncRequestConnectionInfo() { 2197 return getWiFiInfoForUid(Binder.getCallingUid()); 2198 } 2199 2200 public WifiInfo getWifiInfo() { 2201 return mWifiInfo; 2202 } 2203 2204 public DhcpResults syncGetDhcpResults() { 2205 synchronized (mDhcpResultsLock) { 2206 return new DhcpResults(mDhcpResults); 2207 } 2208 } 2209 2210 /** 2211 * TODO: doc 2212 */ 2213 public void setDriverStart(boolean enable) { 2214 if (enable) { 2215 sendMessage(CMD_START_DRIVER); 2216 } else { 2217 sendMessage(CMD_STOP_DRIVER); 2218 } 2219 } 2220 2221 /** 2222 * TODO: doc 2223 */ 2224 public void setOperationalMode(int mode) { 2225 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2226 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2227 } 2228 2229 /** 2230 * TODO: doc 2231 */ 2232 public List<ScanResult> syncGetScanResultsList() { 2233 synchronized (mScanResultCache) { 2234 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2235 for (ScanDetail result : mScanResults) { 2236 scanList.add(new ScanResult(result.getScanResult())); 2237 } 2238 return scanList; 2239 } 2240 } 2241 2242 public Collection<OSUInfo> getOSUInfos() { 2243 return mWifiConfigStore.getOSUInfos(); 2244 } 2245 2246 public void setOSUSelection(int osuID) { 2247 mWifiConfigStore.setOSUSelection(osuID); 2248 } 2249 2250 public void disableEphemeralNetwork(String SSID) { 2251 if (SSID != null) { 2252 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2253 } 2254 } 2255 2256 /** 2257 * Get unsynchronized pointer to scan result list 2258 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2259 */ 2260 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2261 return mScanResults; 2262 } 2263 2264 /** 2265 * Disconnect from Access Point 2266 */ 2267 public void disconnectCommand() { 2268 sendMessage(CMD_DISCONNECT); 2269 } 2270 2271 public void disconnectCommand(int uid, int reason) { 2272 sendMessage(CMD_DISCONNECT, uid, reason); 2273 } 2274 2275 /** 2276 * Initiate a reconnection to AP 2277 */ 2278 public void reconnectCommand() { 2279 sendMessage(CMD_RECONNECT); 2280 } 2281 2282 /** 2283 * Initiate a re-association to AP 2284 */ 2285 public void reassociateCommand() { 2286 sendMessage(CMD_REASSOCIATE); 2287 } 2288 2289 /** 2290 * Reload networks and then reconnect; helps load correct data for TLS networks 2291 */ 2292 2293 public void reloadTlsNetworksAndReconnect() { 2294 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2295 } 2296 2297 /** 2298 * Add a network synchronously 2299 * 2300 * @return network id of the new network 2301 */ 2302 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2303 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2304 int result = resultMsg.arg1; 2305 resultMsg.recycle(); 2306 return result; 2307 } 2308 2309 /** 2310 * Get configured networks synchronously 2311 * 2312 * @param channel 2313 * @return 2314 */ 2315 2316 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2317 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2318 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2319 resultMsg.recycle(); 2320 return result; 2321 } 2322 2323 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2324 Message resultMsg = channel.sendMessageSynchronously( 2325 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2326 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2327 resultMsg.recycle(); 2328 return result; 2329 } 2330 2331 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2332 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2333 return (WifiConfiguration) resultMsg.obj; 2334 } 2335 2336 /** 2337 * Get connection statistics synchronously 2338 * 2339 * @param channel 2340 * @return 2341 */ 2342 2343 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2344 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2345 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2346 resultMsg.recycle(); 2347 return result; 2348 } 2349 2350 /** 2351 * Get adaptors synchronously 2352 */ 2353 2354 public int syncGetSupportedFeatures(AsyncChannel channel) { 2355 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2356 int supportedFeatureSet = resultMsg.arg1; 2357 resultMsg.recycle(); 2358 return supportedFeatureSet; 2359 } 2360 2361 /** 2362 * Get link layers stats for adapter synchronously 2363 */ 2364 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2365 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2366 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2367 resultMsg.recycle(); 2368 return result; 2369 } 2370 2371 /** 2372 * Delete a network 2373 * 2374 * @param networkId id of the network to be removed 2375 */ 2376 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2377 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2378 boolean result = (resultMsg.arg1 != FAILURE); 2379 resultMsg.recycle(); 2380 return result; 2381 } 2382 2383 /** 2384 * Enable a network 2385 * 2386 * @param netId network id of the network 2387 * @param disableOthers true, if all other networks have to be disabled 2388 * @return {@code true} if the operation succeeds, {@code false} otherwise 2389 */ 2390 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2391 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2392 disableOthers ? 1 : 0); 2393 boolean result = (resultMsg.arg1 != FAILURE); 2394 resultMsg.recycle(); 2395 return result; 2396 } 2397 2398 /** 2399 * Disable a network 2400 * 2401 * @param netId network id of the network 2402 * @return {@code true} if the operation succeeds, {@code false} otherwise 2403 */ 2404 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2405 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2406 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2407 resultMsg.recycle(); 2408 return result; 2409 } 2410 2411 /** 2412 * Retrieves a WPS-NFC configuration token for the specified network 2413 * 2414 * @return a hex string representation of the WPS-NFC configuration token 2415 */ 2416 public String syncGetWpsNfcConfigurationToken(int netId) { 2417 return mWifiNative.getNfcWpsConfigurationToken(netId); 2418 } 2419 2420 void enableBackgroundScan(boolean enable) { 2421 if (enable) { 2422 mWifiConfigStore.enableAllNetworks(); 2423 } 2424 boolean ret = mWifiNative.enableBackgroundScan(enable); 2425 if (ret) { 2426 mLegacyPnoEnabled = enable; 2427 } else { 2428 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2429 } 2430 } 2431 2432 /** 2433 * Blacklist a BSSID. This will avoid the AP if there are 2434 * alternate APs to connect 2435 * 2436 * @param bssid BSSID of the network 2437 */ 2438 public void addToBlacklist(String bssid) { 2439 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2440 } 2441 2442 /** 2443 * Clear the blacklist list 2444 */ 2445 public void clearBlacklist() { 2446 sendMessage(CMD_CLEAR_BLACKLIST); 2447 } 2448 2449 public void enableRssiPolling(boolean enabled) { 2450 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2451 } 2452 2453 public void enableAllNetworks() { 2454 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2455 } 2456 2457 /** 2458 * Start filtering Multicast v4 packets 2459 */ 2460 public void startFilteringMulticastV4Packets() { 2461 mFilteringMulticastV4Packets.set(true); 2462 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2463 } 2464 2465 /** 2466 * Stop filtering Multicast v4 packets 2467 */ 2468 public void stopFilteringMulticastV4Packets() { 2469 mFilteringMulticastV4Packets.set(false); 2470 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2471 } 2472 2473 /** 2474 * Start filtering Multicast v4 packets 2475 */ 2476 public void startFilteringMulticastV6Packets() { 2477 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2478 } 2479 2480 /** 2481 * Stop filtering Multicast v4 packets 2482 */ 2483 public void stopFilteringMulticastV6Packets() { 2484 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2485 } 2486 2487 /** 2488 * Set high performance mode of operation. 2489 * Enabling would set active power mode and disable suspend optimizations; 2490 * disabling would set auto power mode and enable suspend optimizations 2491 * 2492 * @param enable true if enable, false otherwise 2493 */ 2494 public void setHighPerfModeEnabled(boolean enable) { 2495 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2496 } 2497 2498 /** 2499 * Set the country code 2500 * 2501 * @param countryCode following ISO 3166 format 2502 * @param persist {@code true} if the setting should be remembered. 2503 */ 2504 public synchronized void setCountryCode(String countryCode, boolean persist) { 2505 // If it's a good country code, apply after the current 2506 // wifi connection is terminated; ignore resetting of code 2507 // for now (it is unclear what the chipset should do when 2508 // country code is reset) 2509 2510 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2511 // else only when the new country code is different from the current one to set 2512 2513 if (TextUtils.isEmpty(countryCode)) { 2514 if (DBG) log("Ignoring resetting of country code"); 2515 } else { 2516 int countryCodeSequence = mCountryCodeSequence.get(); 2517 String currentCountryCode = getCurrentCountryCode(); 2518 if (countryCodeSequence == 0 2519 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2520 2521 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2522 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2523 countryCode); 2524 } 2525 } 2526 } 2527 2528 /** 2529 * reset the country code to default 2530 */ 2531 public synchronized void resetCountryCode() { 2532 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2533 logd("resetting country code to " + mDefaultCountryCode); 2534 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2535 } 2536 } 2537 2538 /** 2539 * Get Network object of current wifi network 2540 * @return Network object of current wifi network 2541 */ 2542 public Network getCurrentNetwork() { 2543 if (mNetworkAgent != null) { 2544 return new Network(mNetworkAgent.netId); 2545 } else { 2546 return null; 2547 } 2548 } 2549 2550 /** 2551 * Get the country code 2552 * 2553 * @return countryCode following ISO 3166 format 2554 */ 2555 public String getCurrentCountryCode() { 2556 return mFacade.getStringSetting(mContext, Settings.Global.WIFI_COUNTRY_CODE); 2557 } 2558 2559 /** 2560 * Set the operational frequency band 2561 * 2562 * @param band 2563 * @param persist {@code true} if the setting should be remembered. 2564 */ 2565 public void setFrequencyBand(int band, boolean persist) { 2566 if (persist) { 2567 Settings.Global.putInt(mContext.getContentResolver(), 2568 Settings.Global.WIFI_FREQUENCY_BAND, 2569 band); 2570 } 2571 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2572 } 2573 2574 /** 2575 * Enable TDLS for a specific MAC address 2576 */ 2577 public void enableTdls(String remoteMacAddress, boolean enable) { 2578 int enabler = enable ? 1 : 0; 2579 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2580 } 2581 2582 /** 2583 * Returns the operational frequency band 2584 */ 2585 public int getFrequencyBand() { 2586 return mFrequencyBand.get(); 2587 } 2588 2589 /** 2590 * Returns the wifi configuration file 2591 */ 2592 public String getConfigFile() { 2593 return mWifiConfigStore.getConfigFile(); 2594 } 2595 2596 /** 2597 * Send a message indicating bluetooth adapter connection state changed 2598 */ 2599 public void sendBluetoothAdapterStateChange(int state) { 2600 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2601 } 2602 2603 /** 2604 * Send a message indicating a package has been uninstalled. 2605 */ 2606 public void removeAppConfigs(String packageName, int uid) { 2607 // Build partial AppInfo manually - package may not exist in database any more 2608 ApplicationInfo ai = new ApplicationInfo(); 2609 ai.packageName = packageName; 2610 ai.uid = uid; 2611 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2612 } 2613 2614 /** 2615 * Send a message indicating a user has been removed. 2616 */ 2617 public void removeUserConfigs(int userId) { 2618 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2619 } 2620 2621 /** 2622 * Save configuration on supplicant 2623 * 2624 * @return {@code true} if the operation succeeds, {@code false} otherwise 2625 * <p/> 2626 * TODO: deprecate this 2627 */ 2628 public boolean syncSaveConfig(AsyncChannel channel) { 2629 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2630 boolean result = (resultMsg.arg1 != FAILURE); 2631 resultMsg.recycle(); 2632 return result; 2633 } 2634 2635 public void updateBatteryWorkSource(WorkSource newSource) { 2636 synchronized (mRunningWifiUids) { 2637 try { 2638 if (newSource != null) { 2639 mRunningWifiUids.set(newSource); 2640 } 2641 if (mIsRunning) { 2642 if (mReportedRunning) { 2643 // If the work source has changed since last time, need 2644 // to remove old work from battery stats. 2645 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2646 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2647 mRunningWifiUids); 2648 mLastRunningWifiUids.set(mRunningWifiUids); 2649 } 2650 } else { 2651 // Now being started, report it. 2652 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2653 mLastRunningWifiUids.set(mRunningWifiUids); 2654 mReportedRunning = true; 2655 } 2656 } else { 2657 if (mReportedRunning) { 2658 // Last reported we were running, time to stop. 2659 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2660 mLastRunningWifiUids.clear(); 2661 mReportedRunning = false; 2662 } 2663 } 2664 mWakeLock.setWorkSource(newSource); 2665 } catch (RemoteException ignore) { 2666 } 2667 } 2668 } 2669 2670 @Override 2671 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2672 super.dump(fd, pw, args); 2673 mSupplicantStateTracker.dump(fd, pw, args); 2674 pw.println("mLinkProperties " + mLinkProperties); 2675 pw.println("mWifiInfo " + mWifiInfo); 2676 pw.println("mDhcpResults " + mDhcpResults); 2677 pw.println("mNetworkInfo " + mNetworkInfo); 2678 pw.println("mLastSignalLevel " + mLastSignalLevel); 2679 pw.println("mLastBssid " + mLastBssid); 2680 pw.println("mLastNetworkId " + mLastNetworkId); 2681 pw.println("mOperationalMode " + mOperationalMode); 2682 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2683 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2684 pw.println("Supplicant status " + mWifiNative.status(true)); 2685 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2686 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2687 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2688 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2689 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2690 pw.println("SSID whitelist :" ); 2691 for (int i=0; i < mWhiteListedSsids.length; i++) { 2692 pw.println(" " + mWhiteListedSsids[i]); 2693 } 2694 } 2695 if (mNetworkFactory != null) { 2696 mNetworkFactory.dump(fd, pw, args); 2697 } else { 2698 pw.println("mNetworkFactory is not initialized"); 2699 } 2700 2701 if (mUntrustedNetworkFactory != null) { 2702 mUntrustedNetworkFactory.dump(fd, pw, args); 2703 } else { 2704 pw.println("mUntrustedNetworkFactory is not initialized"); 2705 } 2706 2707 pw.println(); 2708 2709 mWifiConfigStore.dump(fd, pw, args); 2710 pw.println(); 2711 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2712 mWifiLogger.dump(fd, pw, args); 2713 mWifiQualifiedNetworkSelector.dump(fd, pw, args); 2714 } 2715 2716 /** 2717 * ****************************************************** 2718 * Internal private functions 2719 * ****************************************************** 2720 */ 2721 2722 private void logStateAndMessage(Message message, State state) { 2723 messageHandlingStatus = 0; 2724 if (mLogMessages) { 2725 logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); 2726 } 2727 } 2728 2729 /** 2730 * helper, prints the milli time since boot wi and w/o suspended time 2731 */ 2732 String printTime() { 2733 StringBuilder sb = new StringBuilder(); 2734 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2735 sb.append("/").append(SystemClock.elapsedRealtime()); 2736 return sb.toString(); 2737 } 2738 2739 /** 2740 * Return the additional string to be logged by LogRec, default 2741 * 2742 * @param msg that was processed 2743 * @return information to be logged as a String 2744 */ 2745 protected String getLogRecString(Message msg) { 2746 WifiConfiguration config; 2747 Long now; 2748 String report; 2749 String key; 2750 StringBuilder sb = new StringBuilder(); 2751 if (mScreenOn) { 2752 sb.append("!"); 2753 } 2754 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2755 sb.append("(").append(messageHandlingStatus).append(")"); 2756 } 2757 sb.append(smToString(msg)); 2758 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2759 sb.append(" uid=" + msg.sendingUid); 2760 } 2761 sb.append(" ").append(printTime()); 2762 switch (msg.what) { 2763 case CMD_STARTED_GSCAN_DBG: 2764 case CMD_STARTED_PNO_DBG: 2765 sb.append(" "); 2766 sb.append(Integer.toString(msg.arg1)); 2767 sb.append(" "); 2768 sb.append(Integer.toString(msg.arg2)); 2769 if (msg.obj != null) { 2770 sb.append(" " + (String)msg.obj); 2771 } 2772 break; 2773 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2774 sb.append(" "); 2775 sb.append(Integer.toString(msg.arg1)); 2776 sb.append(" "); 2777 sb.append(Integer.toString(msg.arg2)); 2778 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2779 if (msg.obj != null) { 2780 sb.append(" " + (String)msg.obj); 2781 } 2782 break; 2783 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2784 sb.append(" "); 2785 sb.append(Integer.toString(msg.arg1)); 2786 sb.append(" "); 2787 sb.append(Integer.toString(msg.arg2)); 2788 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2789 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2790 sb.append(" autojoinAllowed="); 2791 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2792 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2793 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2794 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2795 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2796 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2797 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2798 break; 2799 case CMD_PNO_NETWORK_FOUND: 2800 sb.append(" "); 2801 sb.append(Integer.toString(msg.arg1)); 2802 sb.append(" "); 2803 sb.append(Integer.toString(msg.arg2)); 2804 if (msg.obj != null) { 2805 ScanResult[] results = (ScanResult[])msg.obj; 2806 for (int i = 0; i < results.length; i++) { 2807 sb.append(" ").append(results[i].SSID).append(" "); 2808 sb.append(results[i].frequency); 2809 sb.append(" ").append(results[i].level); 2810 } 2811 } 2812 break; 2813 case CMD_START_SCAN: 2814 now = System.currentTimeMillis(); 2815 sb.append(" "); 2816 sb.append(Integer.toString(msg.arg1)); 2817 sb.append(" "); 2818 sb.append(Integer.toString(msg.arg2)); 2819 sb.append(" ic="); 2820 sb.append(Integer.toString(sScanAlarmIntentCount)); 2821 if (msg.obj != null) { 2822 Bundle bundle = (Bundle) msg.obj; 2823 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2824 if (request != 0) { 2825 sb.append(" proc(ms):").append(now - request); 2826 } 2827 } 2828 if (mIsScanOngoing) sb.append(" onGoing"); 2829 if (mIsFullScanOngoing) sb.append(" full"); 2830 if (lastStartScanTimeStamp != 0) { 2831 sb.append(" started:").append(lastStartScanTimeStamp); 2832 sb.append(",").append(now - lastStartScanTimeStamp); 2833 } 2834 if (lastScanDuration != 0) { 2835 sb.append(" dur:").append(lastScanDuration); 2836 } 2837 sb.append(" cnt=").append(mDelayedScanCounter); 2838 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2839 sb.append(" f=").append(mWifiInfo.getFrequency()); 2840 sb.append(" sc=").append(mWifiInfo.score); 2841 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2842 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2843 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2844 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2845 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2846 if (lastScanFreqs != null) { 2847 sb.append(" list="); 2848 for(int freq : lastScanFreqs) { 2849 sb.append(freq).append(","); 2850 } 2851 } else { 2852 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2853 } 2854 report = reportOnTime(); 2855 if (report != null) { 2856 sb.append(" ").append(report); 2857 } 2858 break; 2859 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2860 sb.append(" "); 2861 sb.append(Integer.toString(msg.arg1)); 2862 sb.append(" "); 2863 sb.append(Integer.toString(msg.arg2)); 2864 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2865 if (stateChangeResult != null) { 2866 sb.append(stateChangeResult.toString()); 2867 } 2868 break; 2869 case WifiManager.SAVE_NETWORK: 2870 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2871 sb.append(" "); 2872 sb.append(Integer.toString(msg.arg1)); 2873 sb.append(" "); 2874 sb.append(Integer.toString(msg.arg2)); 2875 if (lastSavedConfigurationAttempt != null) { 2876 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2877 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2878 if (lastSavedConfigurationAttempt.hiddenSSID) { 2879 sb.append(" hidden"); 2880 } 2881 if (lastSavedConfigurationAttempt.preSharedKey != null 2882 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2883 sb.append(" hasPSK"); 2884 } 2885 if (lastSavedConfigurationAttempt.ephemeral) { 2886 sb.append(" ephemeral"); 2887 } 2888 if (lastSavedConfigurationAttempt.selfAdded) { 2889 sb.append(" selfAdded"); 2890 } 2891 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2892 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2893 } 2894 break; 2895 case WifiManager.FORGET_NETWORK: 2896 sb.append(" "); 2897 sb.append(Integer.toString(msg.arg1)); 2898 sb.append(" "); 2899 sb.append(Integer.toString(msg.arg2)); 2900 if (lastForgetConfigurationAttempt != null) { 2901 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2902 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2903 if (lastForgetConfigurationAttempt.hiddenSSID) { 2904 sb.append(" hidden"); 2905 } 2906 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2907 sb.append(" hasPSK"); 2908 } 2909 if (lastForgetConfigurationAttempt.ephemeral) { 2910 sb.append(" ephemeral"); 2911 } 2912 if (lastForgetConfigurationAttempt.selfAdded) { 2913 sb.append(" selfAdded"); 2914 } 2915 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2916 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2917 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 2918 lastForgetConfigurationAttempt.getNetworkSelectionStatus(); 2919 sb.append(" ajst=").append( 2920 netWorkSelectionStatus.getNetworkStatusString()); 2921 } 2922 break; 2923 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2924 sb.append(" "); 2925 sb.append(Integer.toString(msg.arg1)); 2926 sb.append(" "); 2927 sb.append(Integer.toString(msg.arg2)); 2928 String bssid = (String) msg.obj; 2929 if (bssid != null && bssid.length() > 0) { 2930 sb.append(" "); 2931 sb.append(bssid); 2932 } 2933 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2934 break; 2935 case WifiMonitor.SCAN_RESULTS_EVENT: 2936 sb.append(" "); 2937 sb.append(Integer.toString(msg.arg1)); 2938 sb.append(" "); 2939 sb.append(Integer.toString(msg.arg2)); 2940 if (mScanResults != null) { 2941 sb.append(" found="); 2942 sb.append(mScanResults.size()); 2943 } 2944 sb.append(" known=").append(mNumScanResultsKnown); 2945 sb.append(" got=").append(mNumScanResultsReturned); 2946 if (lastScanDuration != 0) { 2947 sb.append(" dur:").append(lastScanDuration); 2948 } 2949 if (mOnTime != 0) { 2950 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2951 sb.append(",").append(mOnTime); 2952 } 2953 if (mTxTime != 0) { 2954 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2955 sb.append(",").append(mTxTime); 2956 } 2957 if (mRxTime != 0) { 2958 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2959 sb.append(",").append(mRxTime); 2960 } 2961 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2962 sb.append(String.format(" con=%d", mConnectionRequests)); 2963 key = mWifiConfigStore.getLastSelectedConfiguration(); 2964 if (key != null) { 2965 sb.append(" last=").append(key); 2966 } 2967 break; 2968 case WifiMonitor.SCAN_FAILED_EVENT: 2969 break; 2970 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2971 sb.append(" "); 2972 sb.append(Integer.toString(msg.arg1)); 2973 sb.append(" "); 2974 sb.append(Integer.toString(msg.arg2)); 2975 sb.append(" ").append(mLastBssid); 2976 sb.append(" nid=").append(mLastNetworkId); 2977 config = getCurrentWifiConfiguration(); 2978 if (config != null) { 2979 sb.append(" ").append(config.configKey()); 2980 } 2981 key = mWifiConfigStore.getLastSelectedConfiguration(); 2982 if (key != null) { 2983 sb.append(" last=").append(key); 2984 } 2985 break; 2986 case CMD_TARGET_BSSID: 2987 case CMD_ASSOCIATED_BSSID: 2988 sb.append(" "); 2989 sb.append(Integer.toString(msg.arg1)); 2990 sb.append(" "); 2991 sb.append(Integer.toString(msg.arg2)); 2992 if (msg.obj != null) { 2993 sb.append(" BSSID=").append((String) msg.obj); 2994 } 2995 if (mTargetRoamBSSID != null) { 2996 sb.append(" Target=").append(mTargetRoamBSSID); 2997 } 2998 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 2999 break; 3000 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 3001 if (msg.obj != null) { 3002 sb.append(" ").append((String) msg.obj); 3003 } 3004 sb.append(" nid=").append(msg.arg1); 3005 sb.append(" reason=").append(msg.arg2); 3006 if (mLastBssid != null) { 3007 sb.append(" lastbssid=").append(mLastBssid); 3008 } 3009 if (mWifiInfo.getFrequency() != -1) { 3010 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3011 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3012 } 3013 if (linkDebouncing) { 3014 sb.append(" debounce"); 3015 } 3016 break; 3017 case WifiMonitor.SSID_TEMP_DISABLED: 3018 case WifiMonitor.SSID_REENABLED: 3019 sb.append(" nid=").append(msg.arg1); 3020 if (msg.obj != null) { 3021 sb.append(" ").append((String) msg.obj); 3022 } 3023 config = getCurrentWifiConfiguration(); 3024 if (config != null) { 3025 WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus = 3026 config.getNetworkSelectionStatus(); 3027 sb.append(" cur=").append(config.configKey()); 3028 sb.append(" ajst=").append(netWorkSelectionStatus.getNetworkStatusString()); 3029 if (config.selfAdded) { 3030 sb.append(" selfAdded"); 3031 } 3032 if (config.status != 0) { 3033 sb.append(" st=").append(config.status); 3034 sb.append(" rs=").append( 3035 netWorkSelectionStatus.getNetworkDisableReasonString()); 3036 } 3037 if (config.lastConnected != 0) { 3038 now = System.currentTimeMillis(); 3039 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 3040 } 3041 if (mLastBssid != null) { 3042 sb.append(" lastbssid=").append(mLastBssid); 3043 } 3044 if (mWifiInfo.getFrequency() != -1) { 3045 sb.append(" freq=").append(mWifiInfo.getFrequency()); 3046 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3047 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 3048 } 3049 } 3050 break; 3051 case CMD_RSSI_POLL: 3052 case CMD_UNWANTED_NETWORK: 3053 case WifiManager.RSSI_PKTCNT_FETCH: 3054 sb.append(" "); 3055 sb.append(Integer.toString(msg.arg1)); 3056 sb.append(" "); 3057 sb.append(Integer.toString(msg.arg2)); 3058 if (mWifiInfo.getSSID() != null) 3059 if (mWifiInfo.getSSID() != null) 3060 sb.append(" ").append(mWifiInfo.getSSID()); 3061 if (mWifiInfo.getBSSID() != null) 3062 sb.append(" ").append(mWifiInfo.getBSSID()); 3063 sb.append(" rssi=").append(mWifiInfo.getRssi()); 3064 sb.append(" f=").append(mWifiInfo.getFrequency()); 3065 sb.append(" sc=").append(mWifiInfo.score); 3066 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 3067 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 3068 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 3069 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 3070 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 3071 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3072 report = reportOnTime(); 3073 if (report != null) { 3074 sb.append(" ").append(report); 3075 } 3076 if (wifiScoringReport != null) { 3077 sb.append(wifiScoringReport); 3078 } 3079 if (mConnectedModeGScanOffloadStarted) { 3080 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3081 } else { 3082 sb.append(" offload-stopped"); 3083 } 3084 break; 3085 case CMD_AUTO_CONNECT: 3086 case WifiManager.CONNECT_NETWORK: 3087 sb.append(" "); 3088 sb.append(Integer.toString(msg.arg1)); 3089 sb.append(" "); 3090 sb.append(Integer.toString(msg.arg2)); 3091 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3092 if (config != null) { 3093 sb.append(" ").append(config.configKey()); 3094 if (config.visibility != null) { 3095 sb.append(" ").append(config.visibility.toString()); 3096 } 3097 } 3098 if (mTargetRoamBSSID != null) { 3099 sb.append(" ").append(mTargetRoamBSSID); 3100 } 3101 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3102 config = getCurrentWifiConfiguration(); 3103 if (config != null) { 3104 sb.append(config.configKey()); 3105 if (config.visibility != null) { 3106 sb.append(" ").append(config.visibility.toString()); 3107 } 3108 } 3109 break; 3110 case CMD_AUTO_ROAM: 3111 sb.append(" "); 3112 sb.append(Integer.toString(msg.arg1)); 3113 sb.append(" "); 3114 sb.append(Integer.toString(msg.arg2)); 3115 ScanResult result = (ScanResult) msg.obj; 3116 if (result != null) { 3117 now = System.currentTimeMillis(); 3118 sb.append(" bssid=").append(result.BSSID); 3119 sb.append(" rssi=").append(result.level); 3120 sb.append(" freq=").append(result.frequency); 3121 if (result.seen > 0 && result.seen < now) { 3122 sb.append(" seen=").append(now - result.seen); 3123 } else { 3124 // Somehow the timestamp for this scan result is inconsistent 3125 sb.append(" !seen=").append(result.seen); 3126 } 3127 } 3128 if (mTargetRoamBSSID != null) { 3129 sb.append(" ").append(mTargetRoamBSSID); 3130 } 3131 sb.append(" roam=").append(Boolean.toString(mAutoRoaming)); 3132 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3133 break; 3134 case CMD_ADD_OR_UPDATE_NETWORK: 3135 sb.append(" "); 3136 sb.append(Integer.toString(msg.arg1)); 3137 sb.append(" "); 3138 sb.append(Integer.toString(msg.arg2)); 3139 if (msg.obj != null) { 3140 config = (WifiConfiguration) msg.obj; 3141 sb.append(" ").append(config.configKey()); 3142 sb.append(" prio=").append(config.priority); 3143 sb.append(" status=").append(config.status); 3144 if (config.BSSID != null) { 3145 sb.append(" ").append(config.BSSID); 3146 } 3147 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3148 if (curConfig != null) { 3149 if (curConfig.configKey().equals(config.configKey())) { 3150 sb.append(" is current"); 3151 } else { 3152 sb.append(" current=").append(curConfig.configKey()); 3153 sb.append(" prio=").append(curConfig.priority); 3154 sb.append(" status=").append(curConfig.status); 3155 } 3156 } 3157 } 3158 break; 3159 case WifiManager.DISABLE_NETWORK: 3160 case CMD_ENABLE_NETWORK: 3161 sb.append(" "); 3162 sb.append(Integer.toString(msg.arg1)); 3163 sb.append(" "); 3164 sb.append(Integer.toString(msg.arg2)); 3165 key = mWifiConfigStore.getLastSelectedConfiguration(); 3166 if (key != null) { 3167 sb.append(" last=").append(key); 3168 } 3169 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3170 if (config != null && (key == null || !config.configKey().equals(key))) { 3171 sb.append(" target=").append(key); 3172 } 3173 break; 3174 case CMD_GET_CONFIGURED_NETWORKS: 3175 sb.append(" "); 3176 sb.append(Integer.toString(msg.arg1)); 3177 sb.append(" "); 3178 sb.append(Integer.toString(msg.arg2)); 3179 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3180 break; 3181 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3182 sb.append(" "); 3183 sb.append(Integer.toString(msg.arg1)); 3184 sb.append(" "); 3185 sb.append(Integer.toString(msg.arg2)); 3186 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3187 sb.append(",").append(mWifiInfo.txBad); 3188 sb.append(",").append(mWifiInfo.txRetries); 3189 break; 3190 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3191 sb.append(" "); 3192 sb.append(Integer.toString(msg.arg1)); 3193 sb.append(" "); 3194 sb.append(Integer.toString(msg.arg2)); 3195 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3196 sb.append(" OK "); 3197 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3198 sb.append(" FAIL "); 3199 } 3200 if (mLinkProperties != null) { 3201 if (mLinkProperties.hasIPv4Address()) { 3202 sb.append(" v4"); 3203 } 3204 if (mLinkProperties.hasGlobalIPv6Address()) { 3205 sb.append(" v6"); 3206 } 3207 if (mLinkProperties.hasIPv4DefaultRoute()) { 3208 sb.append(" v4r"); 3209 } 3210 if (mLinkProperties.hasIPv6DefaultRoute()) { 3211 sb.append(" v6r"); 3212 } 3213 if (mLinkProperties.hasIPv4DnsServer()) { 3214 sb.append(" v4dns"); 3215 } 3216 if (mLinkProperties.hasIPv6DnsServer()) { 3217 sb.append(" v6dns"); 3218 } 3219 } 3220 break; 3221 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3222 sb.append(" "); 3223 sb.append(Integer.toString(msg.arg1)); 3224 sb.append(" "); 3225 sb.append(Integer.toString(msg.arg2)); 3226 if (msg.obj != null) { 3227 NetworkInfo info = (NetworkInfo) msg.obj; 3228 NetworkInfo.State state = info.getState(); 3229 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3230 if (state != null) { 3231 sb.append(" st=").append(state); 3232 } 3233 if (detailedState != null) { 3234 sb.append("/").append(detailedState); 3235 } 3236 } 3237 break; 3238 case CMD_IP_CONFIGURATION_LOST: 3239 int count = -1; 3240 WifiConfiguration c = getCurrentWifiConfiguration(); 3241 if (c != null) { 3242 count = c.getNetworkSelectionStatus().getDisableReasonCounter( 3243 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 3244 } 3245 sb.append(" "); 3246 sb.append(Integer.toString(msg.arg1)); 3247 sb.append(" "); 3248 sb.append(Integer.toString(msg.arg2)); 3249 sb.append(" failures: "); 3250 sb.append(Integer.toString(count)); 3251 sb.append("/"); 3252 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3253 if (mWifiInfo.getBSSID() != null) { 3254 sb.append(" ").append(mWifiInfo.getBSSID()); 3255 } 3256 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3257 break; 3258 case CMD_UPDATE_LINKPROPERTIES: 3259 sb.append(" "); 3260 sb.append(Integer.toString(msg.arg1)); 3261 sb.append(" "); 3262 sb.append(Integer.toString(msg.arg2)); 3263 if (mLinkProperties != null) { 3264 if (mLinkProperties.hasIPv4Address()) { 3265 sb.append(" v4"); 3266 } 3267 if (mLinkProperties.hasGlobalIPv6Address()) { 3268 sb.append(" v6"); 3269 } 3270 if (mLinkProperties.hasIPv4DefaultRoute()) { 3271 sb.append(" v4r"); 3272 } 3273 if (mLinkProperties.hasIPv6DefaultRoute()) { 3274 sb.append(" v6r"); 3275 } 3276 if (mLinkProperties.hasIPv4DnsServer()) { 3277 sb.append(" v4dns"); 3278 } 3279 if (mLinkProperties.hasIPv6DnsServer()) { 3280 sb.append(" v6dns"); 3281 } 3282 } 3283 break; 3284 case CMD_IP_REACHABILITY_LOST: 3285 if (msg.obj != null) { 3286 sb.append(" ").append((String) msg.obj); 3287 } 3288 break; 3289 case CMD_SET_COUNTRY_CODE: 3290 sb.append(" "); 3291 sb.append(Integer.toString(msg.arg1)); 3292 sb.append(" "); 3293 sb.append(Integer.toString(msg.arg2)); 3294 if (msg.obj != null) { 3295 sb.append(" ").append((String) msg.obj); 3296 } 3297 break; 3298 case CMD_ROAM_WATCHDOG_TIMER: 3299 sb.append(" "); 3300 sb.append(Integer.toString(msg.arg1)); 3301 sb.append(" "); 3302 sb.append(Integer.toString(msg.arg2)); 3303 sb.append(" cur=").append(roamWatchdogCount); 3304 break; 3305 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3306 sb.append(" "); 3307 sb.append(Integer.toString(msg.arg1)); 3308 sb.append(" "); 3309 sb.append(Integer.toString(msg.arg2)); 3310 sb.append(" cur=").append(disconnectingWatchdogCount); 3311 break; 3312 case CMD_START_RSSI_MONITORING_OFFLOAD: 3313 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3314 case CMD_RSSI_THRESHOLD_BREACH: 3315 sb.append(" rssi="); 3316 sb.append(Integer.toString(msg.arg1)); 3317 sb.append(" thresholds="); 3318 sb.append(Arrays.toString(mRssiRanges)); 3319 break; 3320 default: 3321 sb.append(" "); 3322 sb.append(Integer.toString(msg.arg1)); 3323 sb.append(" "); 3324 sb.append(Integer.toString(msg.arg2)); 3325 break; 3326 } 3327 3328 return sb.toString(); 3329 } 3330 3331 private void stopPnoOffload() { 3332 3333 // clear the PNO list 3334 if (!mWifiNative.setPnoList(null, WifiStateMachine.this)) { 3335 Log.e(TAG, "Failed to stop pno"); 3336 } 3337 3338 } 3339 3340 3341 private boolean configureSsidWhiteList() { 3342 3343 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3344 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3345 return true; 3346 } 3347 3348 if (!mWifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3349 loge("configureSsidWhiteList couldnt program SSID list, size " 3350 + mWhiteListedSsids.length); 3351 return false; 3352 } 3353 3354 logd("configureSsidWhiteList success"); 3355 return true; 3356 } 3357 3358 // In associated more, lazy roam will be looking for 5GHz roam candidate 3359 //Fixme: This is for network selection offload , whole function need to be re-written according 3360 // to the new design 3361 private boolean configureLazyRoam() { 3362 /*boolean status; 3363 if (!useHalBasedAutoJoinOffload()) return false; 3364 3365 WifiNative.WifiLazyRoamParams params = new WifiNative.WifiLazyRoamParams(); 3366 //params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3367 //params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3368 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3369 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3370 params.A_band_max_boost = 65; 3371 params.lazy_roam_hysteresis = 25; 3372 params.alert_roam_rssi_trigger = -75; 3373 3374 if (DBG) { 3375 Log.e(TAG, "configureLazyRoam " + params.toString()); 3376 } 3377 3378 if (!mWifiNative.setLazyRoam(true, params)) { 3379 3380 Log.e(TAG, "configureLazyRoam couldnt program params"); 3381 3382 return false; 3383 } 3384 if (DBG) { 3385 Log.e(TAG, "configureLazyRoam success"); 3386 }*/ 3387 return true; 3388 } 3389 3390 // In associated more, lazy roam will be looking for 5GHz roam candidate 3391 private boolean stopLazyRoam() { 3392 boolean status; 3393 if (!useHalBasedAutoJoinOffload()) return false; 3394 if (DBG) { 3395 Log.e(TAG, "stopLazyRoam"); 3396 } 3397 return mWifiNative.setLazyRoam(false, null); 3398 } 3399 3400 private boolean startGScanConnectedModeOffload(String reason) { 3401 if (DBG) { 3402 if (reason == null) { 3403 reason = ""; 3404 } 3405 logd("startGScanConnectedModeOffload " + reason); 3406 } 3407 stopGScan("startGScanConnectedModeOffload " + reason); 3408 if (!mScreenOn) return false; 3409 3410 if (USE_PAUSE_SCANS) { 3411 mWifiNative.pauseScan(); 3412 } 3413 mPnoEnabled = configurePno(); 3414 if (mPnoEnabled == false) { 3415 if (USE_PAUSE_SCANS) { 3416 mWifiNative.restartScan(); 3417 } 3418 return false; 3419 } 3420 mLazyRoamEnabled = configureLazyRoam(); 3421 if (mLazyRoamEnabled == false) { 3422 if (USE_PAUSE_SCANS) { 3423 mWifiNative.restartScan(); 3424 } 3425 return false; 3426 } 3427 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3428 configureSsidWhiteList(); 3429 } 3430 if (!startConnectedGScan(reason)) { 3431 if (USE_PAUSE_SCANS) { 3432 mWifiNative.restartScan(); 3433 } 3434 return false; 3435 } 3436 if (USE_PAUSE_SCANS) { 3437 mWifiNative.restartScan(); 3438 } 3439 mConnectedModeGScanOffloadStarted = true; 3440 if (DBG) { 3441 logd("startGScanConnectedModeOffload success"); 3442 } 3443 return true; 3444 } 3445 3446 private boolean startGScanDisconnectedModeOffload(String reason) { 3447 if (DBG) { 3448 logd("startGScanDisconnectedModeOffload " + reason); 3449 } 3450 stopGScan("startGScanDisconnectedModeOffload " + reason); 3451 if (USE_PAUSE_SCANS) { 3452 mWifiNative.pauseScan(); 3453 } 3454 mPnoEnabled = configurePno(); 3455 if (mPnoEnabled == false) { 3456 if (USE_PAUSE_SCANS) { 3457 mWifiNative.restartScan(); 3458 } 3459 return false; 3460 } 3461 if (!startDisconnectedGScan(reason)) { 3462 if (USE_PAUSE_SCANS) { 3463 mWifiNative.restartScan(); 3464 } 3465 return false; 3466 } 3467 if (USE_PAUSE_SCANS) { 3468 mWifiNative.restartScan(); 3469 } 3470 return true; 3471 } 3472 3473 private boolean configurePno() { 3474 if (!useHalBasedAutoJoinOffload()) return false; 3475 3476 if (mWifiScanner == null) { 3477 log("configurePno: mWifiScanner is null "); 3478 return true; 3479 } 3480 3481 List<WifiNative.WifiPnoNetwork> llist = null; 3482 //TODO: add getPnoList in WifiQualifiedNetworkSelector 3483 //mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3484 if (llist == null || llist.size() == 0) { 3485 stopPnoOffload(); 3486 log("configurePno: empty PNO list "); 3487 return true; 3488 } 3489 if (DBG) { 3490 log("configurePno: got llist size " + llist.size()); 3491 } 3492 3493 // first program the network we want to look for thru the pno API 3494 WifiNative.WifiPnoNetwork list[] 3495 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3496 3497 if (!mWifiNative.setPnoList(list, WifiStateMachine.this)) { 3498 Log.e(TAG, "Failed to set pno, length = " + list.length); 3499 return false; 3500 } 3501 3502 if (true) { 3503 StringBuilder sb = new StringBuilder(); 3504 for (WifiNative.WifiPnoNetwork network : list) { 3505 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3506 sb.append(" flags="); 3507 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3508 sb.append("] "); 3509 3510 } 3511 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3512 } 3513 return true; 3514 } 3515 3516 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3517 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3518 3519 private boolean startConnectedGScan(String reason) { 3520 // send a scan background request so as to kick firmware 3521 // 5GHz roaming and autojoin 3522 // We do this only if screen is on 3523 WifiScanner.ScanSettings settings; 3524 3525 if (mPnoEnabled || mLazyRoamEnabled) { 3526 settings = new WifiScanner.ScanSettings(); 3527 settings.band = WifiScanner.WIFI_BAND_BOTH; 3528 long now = System.currentTimeMillis(); 3529 3530 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3531 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3532 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3533 } else { 3534 mGScanStartTimeMilli = now; 3535 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3536 // if we start offload with short interval, then reconfigure it after a given 3537 // duration of time so as to reduce the scan frequency 3538 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3539 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3540 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3541 (long)delay); 3542 mRestartAutoJoinOffloadCounter++; 3543 } 3544 mGScanPeriodMilli = settings.periodInMs; 3545 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3546 if (DBG) { 3547 log("startConnectedScan: settings band="+ settings.band 3548 + " period=" + settings.periodInMs); 3549 } 3550 3551 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3552 if (true) { 3553 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3554 } 3555 } 3556 return true; 3557 } 3558 3559 private boolean startDisconnectedGScan(String reason) { 3560 // send a scan background request so as to kick firmware 3561 // PNO 3562 // This is done in both screen On and screen Off modes 3563 WifiScanner.ScanSettings settings; 3564 3565 if (mWifiScanner == null) { 3566 log("startDisconnectedGScan: no wifi scanner"); 3567 return false; 3568 } 3569 3570 if (mPnoEnabled || mLazyRoamEnabled) { 3571 settings = new WifiScanner.ScanSettings(); 3572 settings.band = WifiScanner.WIFI_BAND_BOTH; 3573 long now = System.currentTimeMillis(); 3574 3575 3576 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3577 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3578 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3579 } else { 3580 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3581 mGScanStartTimeMilli = now; 3582 // if we start offload with short interval, then reconfigure it after a given 3583 // duration of time so as to reduce the scan frequency 3584 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3585 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3586 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3587 (long)delay); 3588 mRestartAutoJoinOffloadCounter++; 3589 } 3590 mGScanPeriodMilli = settings.periodInMs; 3591 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3592 if (DBG) { 3593 log("startDisconnectedScan: settings band="+ settings.band 3594 + " period=" + settings.periodInMs); 3595 } 3596 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3597 if (true) { 3598 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3599 } 3600 } 3601 return true; 3602 } 3603 3604 private boolean stopGScan(String reason) { 3605 mGScanStartTimeMilli = 0; 3606 mGScanPeriodMilli = 0; 3607 if (mWifiScanner != null) { 3608 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3609 } 3610 mConnectedModeGScanOffloadStarted = false; 3611 if (true) { 3612 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3613 } 3614 return true; 3615 } 3616 3617 private void handleScreenStateChanged(boolean screenOn) { 3618 mScreenOn = screenOn; 3619 if (PDBG) { 3620 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3621 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3622 + " state " + getCurrentState().getName() 3623 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3624 } 3625 enableRssiPolling(screenOn); 3626 if (mUserWantsSuspendOpt.get()) { 3627 if (screenOn) { 3628 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3629 } else { 3630 // Allow 2s for suspend optimizations to be set 3631 mSuspendWakeLock.acquire(2000); 3632 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3633 } 3634 } 3635 mScreenBroadcastReceived.set(true); 3636 3637 getWifiLinkLayerStats(false); 3638 mOnTimeScreenStateChange = mOnTime; 3639 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3640 3641 cancelDelayedScan(); 3642 3643 if (screenOn) { 3644 enableBackgroundScan(false); 3645 setScanAlarm(false); 3646 clearBlacklist(); 3647 3648 fullBandConnectedTimeIntervalMilli 3649 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3650 // In either Disconnectedstate or ConnectedState, 3651 // start the scan alarm so as to enable autojoin 3652 if (getCurrentState() == mConnectedState 3653 && allowFullBandScanAndAssociated()) { 3654 if (useHalBasedAutoJoinOffload()) { 3655 startGScanConnectedModeOffload("screenOnConnected"); 3656 } else { 3657 // Scan after 500ms 3658 startDelayedScan(500, null, null); 3659 } 3660 } else if (getCurrentState() == mDisconnectedState) { 3661 if (useHalBasedAutoJoinOffload()) { 3662 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3663 } else { 3664 // Scan after 500ms 3665 startDelayedScan(500, null, null); 3666 } 3667 } 3668 } else { 3669 if (getCurrentState() == mDisconnectedState) { 3670 // Screen Off and Disconnected and chipset doesn't support scan offload 3671 // => start scan alarm 3672 // Screen Off and Disconnected and chipset does support scan offload 3673 // => will use scan offload (i.e. background scan) 3674 if (useHalBasedAutoJoinOffload()) { 3675 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3676 } else { 3677 if (!mBackgroundScanSupported) { 3678 setScanAlarm(true); 3679 } else { 3680 if (!mIsScanOngoing) { 3681 enableBackgroundScan(true); 3682 } 3683 } 3684 } 3685 } else { 3686 enableBackgroundScan(false); 3687 if (useHalBasedAutoJoinOffload()) { 3688 // don't try stop Gscan if it is not enabled 3689 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3690 } 3691 } 3692 } 3693 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3694 3695 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3696 } 3697 3698 private void checkAndSetConnectivityInstance() { 3699 if (mCm == null) { 3700 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3701 } 3702 } 3703 3704 private boolean startTethering(ArrayList<String> available) { 3705 3706 boolean wifiAvailable = false; 3707 3708 checkAndSetConnectivityInstance(); 3709 3710 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3711 3712 for (String intf : available) { 3713 for (String regex : wifiRegexs) { 3714 if (intf.matches(regex)) { 3715 3716 InterfaceConfiguration ifcg = null; 3717 try { 3718 ifcg = mNwService.getInterfaceConfig(intf); 3719 if (ifcg != null) { 3720 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3721 ifcg.setLinkAddress(new LinkAddress( 3722 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3723 ifcg.setInterfaceUp(); 3724 3725 mNwService.setInterfaceConfig(intf, ifcg); 3726 } 3727 } catch (Exception e) { 3728 loge("Error configuring interface " + intf + ", :" + e); 3729 return false; 3730 } 3731 3732 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3733 loge("Error tethering on " + intf); 3734 return false; 3735 } 3736 mTetherInterfaceName = intf; 3737 return true; 3738 } 3739 } 3740 } 3741 // We found no interfaces to tether 3742 return false; 3743 } 3744 3745 private void stopTethering() { 3746 3747 checkAndSetConnectivityInstance(); 3748 3749 /* Clear the interface config to allow dhcp correctly configure new 3750 ip settings */ 3751 InterfaceConfiguration ifcg = null; 3752 try { 3753 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3754 if (ifcg != null) { 3755 ifcg.setLinkAddress( 3756 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3757 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3758 } 3759 } catch (Exception e) { 3760 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3761 } 3762 3763 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3764 loge("Untether initiate failed!"); 3765 } 3766 } 3767 3768 private boolean isWifiTethered(ArrayList<String> active) { 3769 3770 checkAndSetConnectivityInstance(); 3771 3772 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3773 for (String intf : active) { 3774 for (String regex : wifiRegexs) { 3775 if (intf.matches(regex)) { 3776 return true; 3777 } 3778 } 3779 } 3780 // We found no interfaces that are tethered 3781 return false; 3782 } 3783 3784 /** 3785 * Set the country code from the system setting value, if any. 3786 */ 3787 private void initializeCountryCode() { 3788 String countryCode = getCurrentCountryCode(); 3789 if (countryCode != null && !countryCode.isEmpty()) { 3790 setCountryCode(countryCode, false); 3791 } else { 3792 //use driver default 3793 } 3794 } 3795 3796 /** 3797 * Set the frequency band from the system setting value, if any. 3798 */ 3799 private void setFrequencyBand() { 3800 int band = mFacade.getIntegerSetting(mContext, 3801 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3802 3803 if (mWifiNative.setBand(band)) { 3804 mFrequencyBand.set(band); 3805 if (PDBG) { 3806 logd("done set frequency band " + band); 3807 mWifiQualifiedNetworkSelector.setUserPreferedBand(band); 3808 } 3809 } else { 3810 loge("Failed to set frequency band " + band); 3811 } 3812 } 3813 3814 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3815 if (DBG) { 3816 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3817 + " -want " + mUserWantsSuspendOpt.get() 3818 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3819 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3820 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3821 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3822 } 3823 //mWifiNative.setSuspendOptimizations(enabled); 3824 3825 if (enabled) { 3826 mSuspendOptNeedsDisabled &= ~reason; 3827 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3828 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3829 if (DBG) { 3830 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3831 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3832 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3833 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3834 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3835 } 3836 mWifiNative.setSuspendOptimizations(true); 3837 } 3838 } else { 3839 mSuspendOptNeedsDisabled |= reason; 3840 mWifiNative.setSuspendOptimizations(false); 3841 } 3842 } 3843 3844 private void setSuspendOptimizations(int reason, boolean enabled) { 3845 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3846 if (enabled) { 3847 mSuspendOptNeedsDisabled &= ~reason; 3848 } else { 3849 mSuspendOptNeedsDisabled |= reason; 3850 } 3851 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3852 } 3853 3854 private void setWifiState(int wifiState) { 3855 final int previousWifiState = mWifiState.get(); 3856 3857 try { 3858 if (wifiState == WIFI_STATE_ENABLED) { 3859 mBatteryStats.noteWifiOn(); 3860 } else if (wifiState == WIFI_STATE_DISABLED) { 3861 mBatteryStats.noteWifiOff(); 3862 } 3863 } catch (RemoteException e) { 3864 loge("Failed to note battery stats in wifi"); 3865 } 3866 3867 mWifiState.set(wifiState); 3868 3869 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3870 3871 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3872 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3873 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3874 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3875 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3876 } 3877 3878 private void setWifiApState(int wifiApState, int reason) { 3879 final int previousWifiApState = mWifiApState.get(); 3880 3881 try { 3882 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3883 mBatteryStats.noteWifiOn(); 3884 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3885 mBatteryStats.noteWifiOff(); 3886 } 3887 } catch (RemoteException e) { 3888 loge("Failed to note battery stats in wifi"); 3889 } 3890 3891 // Update state 3892 mWifiApState.set(wifiApState); 3893 3894 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3895 3896 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3897 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3898 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3899 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3900 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3901 //only set reason number when softAP start failed 3902 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3903 } 3904 3905 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3906 } 3907 3908 private void setScanResults() { 3909 mNumScanResultsKnown = 0; 3910 mNumScanResultsReturned = 0; 3911 3912 ArrayList<ScanDetail> scanResults = mWifiNative.getScanResults(); 3913 3914 if (scanResults.isEmpty()) { 3915 mScanResults = new ArrayList<>(); 3916 return; 3917 } 3918 3919 mWifiConfigStore.trimANQPCache(false); 3920 3921 synchronized (mScanResultCache) { 3922 mScanResults = scanResults; 3923 mNumScanResultsReturned = mScanResults.size(); 3924 3925 for (ScanDetail resultDetail : mScanResults) { 3926 mScanResultCache.put(resultDetail.getNetworkDetail(), resultDetail); 3927 } 3928 } 3929 3930 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false); 3931 3932 if (linkDebouncing) { 3933 // If debouncing, we dont re-select a SSID or BSSID hence 3934 // there is no need to call the network selection code 3935 // in WifiAutoJoinController, instead, 3936 // just try to reconnect to the same SSID by triggering a roam 3937 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3938 } 3939 } 3940 3941 /* 3942 * Fetch RSSI, linkspeed, and frequency on current connection 3943 */ 3944 private void fetchRssiLinkSpeedAndFrequencyNative() { 3945 Integer newRssi = null; 3946 Integer newLinkSpeed = null; 3947 Integer newFrequency = null; 3948 3949 String signalPoll = mWifiNative.signalPoll(); 3950 3951 if (signalPoll != null) { 3952 String[] lines = signalPoll.split("\n"); 3953 for (String line : lines) { 3954 String[] prop = line.split("="); 3955 if (prop.length < 2) continue; 3956 try { 3957 if (prop[0].equals("RSSI")) { 3958 newRssi = Integer.parseInt(prop[1]); 3959 } else if (prop[0].equals("LINKSPEED")) { 3960 newLinkSpeed = Integer.parseInt(prop[1]); 3961 } else if (prop[0].equals("FREQUENCY")) { 3962 newFrequency = Integer.parseInt(prop[1]); 3963 } 3964 } catch (NumberFormatException e) { 3965 //Ignore, defaults on rssi and linkspeed are assigned 3966 } 3967 } 3968 } 3969 3970 if (PDBG) { 3971 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi + 3972 " linkspeed=" + newLinkSpeed + " freq=" + newFrequency); 3973 } 3974 3975 if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3976 // screen out invalid values 3977 /* some implementations avoid negative values by adding 256 3978 * so we need to adjust for that here. 3979 */ 3980 if (newRssi > 0) newRssi -= 256; 3981 mWifiInfo.setRssi(newRssi); 3982 /* 3983 * Rather then sending the raw RSSI out every time it 3984 * changes, we precalculate the signal level that would 3985 * be displayed in the status bar, and only send the 3986 * broadcast if that much more coarse-grained number 3987 * changes. This cuts down greatly on the number of 3988 * broadcasts, at the cost of not informing others 3989 * interested in RSSI of all the changes in signal 3990 * level. 3991 */ 3992 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3993 if (newSignalLevel != mLastSignalLevel) { 3994 updateCapabilities(getCurrentWifiConfiguration()); 3995 sendRssiChangeBroadcast(newRssi); 3996 } 3997 mLastSignalLevel = newSignalLevel; 3998 } else { 3999 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4000 updateCapabilities(getCurrentWifiConfiguration()); 4001 } 4002 4003 if (newLinkSpeed != null) { 4004 mWifiInfo.setLinkSpeed(newLinkSpeed); 4005 } 4006 if (newFrequency != null && newFrequency > 0) { 4007 if (ScanResult.is5GHz(newFrequency)) { 4008 mWifiConnectionStatistics.num5GhzConnected++; 4009 } 4010 if (ScanResult.is24GHz(newFrequency)) { 4011 mWifiConnectionStatistics.num24GhzConnected++; 4012 } 4013 mWifiInfo.setFrequency(newFrequency); 4014 } 4015 mWifiConfigStore.updateConfiguration(mWifiInfo); 4016 } 4017 4018 /** 4019 * Determine if we need to switch network: 4020 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4021 * - match the uregncy of the switch versus the packet usage at the interface 4022 */ 4023 boolean shouldSwitchNetwork(int networkDelta) { 4024 int delta; 4025 if (networkDelta <= 0) { 4026 return false; 4027 } 4028 delta = networkDelta; 4029 if (mWifiInfo != null) { 4030 if (!getEnableAutoJoinWhenAssociated() 4031 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4032 // If AutoJoin while associated is not enabled, 4033 // we should never switch network when already associated 4034 delta = -1000; 4035 } else { 4036 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4037 // TODO: at the interface. We should also discriminate between ucast and mcast, 4038 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4039 // TODO: broadcasts 4040 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4041 delta -= 999; 4042 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4043 delta -= 6; 4044 } 4045 logd("shouldSwitchNetwork " 4046 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4047 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4048 + " delta " + networkDelta + " -> " + delta); 4049 } 4050 } else { 4051 logd("shouldSwitchNetwork " 4052 + " delta " + networkDelta + " -> " + delta); 4053 } 4054 if (delta > 0) { 4055 return true; 4056 } 4057 return false; 4058 } 4059 4060 // Polling has completed, hence we wont have a score anymore 4061 private void cleanWifiScore() { 4062 mWifiInfo.txBadRate = 0; 4063 mWifiInfo.txSuccessRate = 0; 4064 mWifiInfo.txRetriesRate = 0; 4065 mWifiInfo.rxSuccessRate = 0; 4066 } 4067 4068 int mBadLinkspeedcount = 0; 4069 4070 // For debug, provide information about the last scoring operation 4071 String wifiScoringReport = null; 4072 4073 private void calculateWifiScore(WifiLinkLayerStats stats) { 4074 StringBuilder sb = new StringBuilder(); 4075 4076 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4077 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4078 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4079 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4080 < mWifiConfigStore.badLinkSpeed5); 4081 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4082 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4083 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4084 >= mWifiConfigStore.goodLinkSpeed5); 4085 4086 if (isBadLinkspeed) { 4087 if (mBadLinkspeedcount < 6) 4088 mBadLinkspeedcount++; 4089 } else { 4090 if (mBadLinkspeedcount > 0) 4091 mBadLinkspeedcount--; 4092 } 4093 4094 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4095 if (isGoodLinkspeed) sb.append(" gl"); 4096 4097 /** 4098 * We want to make sure that we use the 24GHz RSSI thresholds if 4099 * there are 2.4GHz scan results 4100 * otherwise we end up lowering the score based on 5GHz values 4101 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4102 * We also might unblacklist the configuation based on 2.4GHz 4103 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4104 */ 4105 boolean use24Thresholds = false; 4106 boolean homeNetworkBoost = false; 4107 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4108 ScanDetailCache scanDetailCache = 4109 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4110 if (currentConfiguration != null && scanDetailCache != null) { 4111 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4112 if (currentConfiguration.visibility != null) { 4113 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4114 && currentConfiguration.visibility.rssi24 4115 >= (currentConfiguration.visibility.rssi5 - 2)) { 4116 use24Thresholds = true; 4117 } 4118 } 4119 if (scanDetailCache.size() <= 6 4120 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4121 && currentConfiguration.allowedKeyManagement. 4122 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4123 // A PSK network with less than 6 known BSSIDs 4124 // This is most likely a home network and thus we want to stick to wifi more 4125 homeNetworkBoost = true; 4126 } 4127 } 4128 if (homeNetworkBoost) sb.append(" hn"); 4129 if (use24Thresholds) sb.append(" u24"); 4130 4131 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4132 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4133 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4134 4135 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4136 4137 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 4138 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 4139 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 4140 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdMinimumRssi5.get()); 4141 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 4142 || (!is24GHz && mWifiInfo.getRssi() 4143 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 4144 4145 if (isBadRSSI) sb.append(" br"); 4146 if (isLowRSSI) sb.append(" lr"); 4147 if (isHighRSSI) sb.append(" hr"); 4148 4149 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4150 if (currentConfiguration != null && 4151 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4152 if (isBadRSSI) { 4153 currentConfiguration.numTicksAtBadRSSI++; 4154 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4155 // We remained associated for a compound amount of time while passing 4156 // traffic, hence loose the corresponding user triggered disabled stats 4157 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4158 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4159 } 4160 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4161 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4162 } 4163 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4164 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4165 } 4166 currentConfiguration.numTicksAtBadRSSI = 0; 4167 } 4168 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4169 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4170 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4171 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4172 score = score - 5; 4173 penalizedDueToUserTriggeredDisconnect = 1; 4174 sb.append(" p1"); 4175 } 4176 } else if (isLowRSSI) { 4177 currentConfiguration.numTicksAtLowRSSI++; 4178 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4179 // We remained associated for a compound amount of time while passing 4180 // traffic, hence loose the corresponding user triggered disabled stats 4181 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4182 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4183 } 4184 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4185 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4186 } 4187 currentConfiguration.numTicksAtLowRSSI = 0; 4188 } 4189 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4190 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4191 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4192 score = score - 5; 4193 penalizedDueToUserTriggeredDisconnect = 2; 4194 sb.append(" p2"); 4195 } 4196 } else if (!isHighRSSI) { 4197 currentConfiguration.numTicksAtNotHighRSSI++; 4198 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4199 // We remained associated for a compound amount of time while passing 4200 // traffic, hence loose the corresponding user triggered disabled stats 4201 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4202 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4203 } 4204 currentConfiguration.numTicksAtNotHighRSSI = 0; 4205 } 4206 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4207 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4208 score = score - 5; 4209 penalizedDueToUserTriggeredDisconnect = 3; 4210 sb.append(" p3"); 4211 } 4212 } 4213 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4214 currentConfiguration.numTicksAtLowRSSI, 4215 currentConfiguration.numTicksAtNotHighRSSI)); 4216 } 4217 4218 if (PDBG) { 4219 String rssiStatus = ""; 4220 if (isBadRSSI) rssiStatus += " badRSSI "; 4221 else if (isHighRSSI) rssiStatus += " highRSSI "; 4222 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4223 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4224 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4225 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4226 + " score=" + Integer.toString(mWifiInfo.score) 4227 + rssiStatus 4228 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4229 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4230 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4231 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4232 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4233 } 4234 4235 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4236 && (isBadRSSI || isLowRSSI)) { 4237 // Link is stuck 4238 if (mWifiInfo.linkStuckCount < 5) 4239 mWifiInfo.linkStuckCount += 1; 4240 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4241 if (PDBG) logd(" bad link -> stuck count =" 4242 + Integer.toString(mWifiInfo.linkStuckCount)); 4243 } else if (mWifiInfo.txBadRate < 0.3) { 4244 if (mWifiInfo.linkStuckCount > 0) 4245 mWifiInfo.linkStuckCount -= 1; 4246 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4247 if (PDBG) logd(" good link -> stuck count =" 4248 + Integer.toString(mWifiInfo.linkStuckCount)); 4249 } 4250 4251 sb.append(String.format(" [%d", score)); 4252 4253 if (mWifiInfo.linkStuckCount > 1) { 4254 // Once link gets stuck for more than 3 seconds, start reducing the score 4255 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4256 } 4257 sb.append(String.format(",%d", score)); 4258 4259 if (isBadLinkspeed) { 4260 score -= 4; 4261 if (PDBG) { 4262 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4263 + " score=" + Integer.toString(score)); 4264 } 4265 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4266 score += 4; // So as bad rssi alone dont kill us 4267 } 4268 sb.append(String.format(",%d", score)); 4269 4270 if (isBadRSSI) { 4271 if (mWifiInfo.badRssiCount < 7) 4272 mWifiInfo.badRssiCount += 1; 4273 } else if (isLowRSSI) { 4274 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4275 if (mWifiInfo.badRssiCount > 0) { 4276 // Decrement bad Rssi count 4277 mWifiInfo.badRssiCount -= 1; 4278 } 4279 } else { 4280 mWifiInfo.badRssiCount = 0; 4281 mWifiInfo.lowRssiCount = 0; 4282 } 4283 4284 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4285 sb.append(String.format(",%d", score)); 4286 4287 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4288 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4289 + " --> score " + Integer.toString(score)); 4290 4291 4292 if (isHighRSSI) { 4293 score += 5; 4294 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4295 } 4296 sb.append(String.format(",%d]", score)); 4297 4298 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4299 4300 //sanitize boundaries 4301 if (score > NetworkAgent.WIFI_BASE_SCORE) 4302 score = NetworkAgent.WIFI_BASE_SCORE; 4303 if (score < 0) 4304 score = 0; 4305 4306 //report score 4307 if (score != mWifiInfo.score) { 4308 if (DBG) { 4309 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4310 } 4311 mWifiInfo.score = score; 4312 if (mNetworkAgent != null) { 4313 mNetworkAgent.sendNetworkScore(score); 4314 } 4315 } 4316 wifiScoringReport = sb.toString(); 4317 } 4318 4319 public double getTxPacketRate() { 4320 if (mWifiInfo != null) { 4321 return mWifiInfo.txSuccessRate; 4322 } 4323 return -1; 4324 } 4325 4326 public double getRxPacketRate() { 4327 if (mWifiInfo != null) { 4328 return mWifiInfo.rxSuccessRate; 4329 } 4330 return -1; 4331 } 4332 4333 /** 4334 * Fetch TX packet counters on current connection 4335 */ 4336 private void fetchPktcntNative(RssiPacketCountInfo info) { 4337 String pktcntPoll = mWifiNative.pktcntPoll(); 4338 4339 if (pktcntPoll != null) { 4340 String[] lines = pktcntPoll.split("\n"); 4341 for (String line : lines) { 4342 String[] prop = line.split("="); 4343 if (prop.length < 2) continue; 4344 try { 4345 if (prop[0].equals("TXGOOD")) { 4346 info.txgood = Integer.parseInt(prop[1]); 4347 } else if (prop[0].equals("TXBAD")) { 4348 info.txbad = Integer.parseInt(prop[1]); 4349 } 4350 } catch (NumberFormatException e) { 4351 // Ignore 4352 } 4353 } 4354 } 4355 } 4356 4357 private boolean clearIPv4Address(String iface) { 4358 try { 4359 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4360 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4361 mNwService.setInterfaceConfig(iface, ifcg); 4362 return true; 4363 } catch (RemoteException e) { 4364 return false; 4365 } 4366 } 4367 4368 private boolean isProvisioned(LinkProperties lp) { 4369 return lp.isProvisioned() || 4370 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4371 } 4372 4373 /** 4374 * Creates a new LinkProperties object by merging information from various sources. 4375 * <p/> 4376 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4377 * netlink, static configuration, ...). When one of these sources of information has updated 4378 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4379 * information that came from other sources. Instead, when one of those sources has new 4380 * information, we update the object that tracks the information from that source and then 4381 * call this method to integrate the change into a new LinkProperties object for subsequent 4382 * comparison with mLinkProperties. 4383 * <p/> 4384 * The information used to build LinkProperties is currently obtained as follows: 4385 * - Interface name: set in the constructor. 4386 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4387 * - IPv4 routes, DNS servers, and domains: DHCP. 4388 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4389 * - HTTP proxy: the wifi config store. 4390 */ 4391 private LinkProperties makeLinkProperties() { 4392 LinkProperties newLp = new LinkProperties(); 4393 4394 // Interface name, proxy, and TCP buffer sizes are locally configured. 4395 newLp.setInterfaceName(mInterfaceName); 4396 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4397 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4398 newLp.setTcpBufferSizes(mTcpBufferSizes); 4399 } 4400 4401 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4402 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4403 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4404 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4405 newLp.addRoute(route); 4406 } 4407 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4408 // Only add likely reachable DNS servers. 4409 // TODO: investigate deleting this. 4410 if (newLp.isReachable(dns)) { 4411 newLp.addDnsServer(dns); 4412 } 4413 } 4414 4415 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4416 synchronized (mDhcpResultsLock) { 4417 // Even when we're using static configuration, we don't need to look at the config 4418 // store, because static IP configuration also populates mDhcpResults. 4419 if ((mDhcpResults != null)) { 4420 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4421 newLp.addRoute(route); 4422 } 4423 for (InetAddress dns : mDhcpResults.dnsServers) { 4424 // Only add likely reachable DNS servers. 4425 // TODO: investigate deleting this. 4426 if (newLp.isReachable(dns)) { 4427 newLp.addDnsServer(dns); 4428 } 4429 } 4430 newLp.setDomains(mDhcpResults.domains); 4431 } 4432 } 4433 4434 return newLp; 4435 } 4436 4437 private void updateLinkProperties(int reason) { 4438 LinkProperties newLp = makeLinkProperties(); 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 (linkChanged) { 4453 if (DBG) { 4454 log("Link configuration changed for netId: " + mLastNetworkId 4455 + " old: " + mLinkProperties + " new: " + newLp); 4456 } 4457 mLinkProperties = newLp; 4458 if (mIpReachabilityMonitor != null) { 4459 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4460 } 4461 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4462 } 4463 4464 if (lostProvisioning) { 4465 log("Lost IP layer provisioning!" + 4466 " was: " + mLinkProperties + 4467 " now: " + newLp); 4468 } 4469 4470 if (DBG) { 4471 StringBuilder sb = new StringBuilder(); 4472 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4473 sb.append(" state: " + detailedState); 4474 sb.append(" reason: " + smToString(reason)); 4475 4476 if (mLinkProperties != null) { 4477 if (mLinkProperties.hasIPv4Address()) { 4478 sb.append(" v4"); 4479 } 4480 if (mLinkProperties.hasGlobalIPv6Address()) { 4481 sb.append(" v6"); 4482 } 4483 if (mLinkProperties.hasIPv4DefaultRoute()) { 4484 sb.append(" v4r"); 4485 } 4486 if (mLinkProperties.hasIPv6DefaultRoute()) { 4487 sb.append(" v6r"); 4488 } 4489 if (mLinkProperties.hasIPv4DnsServer()) { 4490 sb.append(" v4dns"); 4491 } 4492 if (mLinkProperties.hasIPv6DnsServer()) { 4493 sb.append(" v6dns"); 4494 } 4495 if (isProvisioned) { 4496 sb.append(" isprov"); 4497 } 4498 } 4499 logd(sb.toString()); 4500 } 4501 4502 // If we just configured or lost IP configuration, do the needful. 4503 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4504 // here because those should only be called if we're attempting to connect or already 4505 // connected, whereas updateLinkProperties can be called at any time. 4506 switch (reason) { 4507 case DhcpStateMachine.DHCP_SUCCESS: 4508 case CMD_STATIC_IP_SUCCESS: 4509 // IPv4 provisioning succeded. Advance to connected state. 4510 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4511 if (!isProvisioned) { 4512 // Can never happen unless DHCP reports success but isProvisioned thinks the 4513 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4514 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4515 // TODO: disconnect here instead. If our configuration is not usable, there's no 4516 // point in staying connected, and if mLinkProperties is out of sync with 4517 // reality, that will cause problems in the future. 4518 logd("IPv4 config succeeded, but not provisioned"); 4519 } 4520 break; 4521 4522 case DhcpStateMachine.DHCP_FAILURE: 4523 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4524 // give up and disconnect. 4525 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4526 if (!isProvisioned || lostProvisioning) { 4527 sendMessage(CMD_IP_CONFIGURATION_LOST); 4528 } else { 4529 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4530 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4531 4532 // To be sure we don't get stuck with a non-working network if all we had is 4533 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4534 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4535 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4536 // necessary for provisioning, its deletion will cause us to disconnect. 4537 // 4538 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4539 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4540 // not return true if we're using DHCP and don't have an IPv4 default route. So 4541 // for now it's only here for extra redundancy. However, it will increase 4542 // robustness if we move to getting IPv4 routes from netlink as well. 4543 loge("DHCP failure: provisioned, clearing IPv4 address."); 4544 if (!clearIPv4Address(mInterfaceName)) { 4545 sendMessage(CMD_IP_CONFIGURATION_LOST); 4546 } 4547 } 4548 break; 4549 4550 case CMD_STATIC_IP_FAILURE: 4551 // Static configuration was invalid, or an error occurred in applying it. Give up. 4552 sendMessage(CMD_IP_CONFIGURATION_LOST); 4553 break; 4554 4555 case CMD_UPDATE_LINKPROPERTIES: 4556 // IP addresses, DNS servers, etc. changed. Act accordingly. 4557 if (lostProvisioning) { 4558 // We no longer have a usable network configuration. Disconnect. 4559 sendMessage(CMD_IP_CONFIGURATION_LOST); 4560 } else if (!wasProvisioned && isProvisioned) { 4561 // We have a usable IPv6-only config. Advance to connected state. 4562 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4563 } 4564 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4565 // If anything has changed and we're already connected, send out a notification. 4566 sendLinkConfigurationChangedBroadcast(); 4567 } 4568 break; 4569 } 4570 } 4571 4572 /** 4573 * Clears all our link properties. 4574 */ 4575 private void clearLinkProperties() { 4576 // Clear the link properties obtained from DHCP and netlink. 4577 synchronized (mDhcpResultsLock) { 4578 if (mDhcpResults != null) { 4579 mDhcpResults.clear(); 4580 } 4581 } 4582 mNetlinkTracker.clearLinkProperties(); 4583 if (mIpReachabilityMonitor != null) { 4584 mIpReachabilityMonitor.clearLinkProperties(); 4585 } 4586 4587 // Now clear the merged link properties. 4588 mLinkProperties.clear(); 4589 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4590 } 4591 4592 /** 4593 * try to update default route MAC address. 4594 */ 4595 private String updateDefaultRouteMacAddress(int timeout) { 4596 String address = null; 4597 for (RouteInfo route : mLinkProperties.getRoutes()) { 4598 if (route.isDefaultRoute() && route.hasGateway()) { 4599 InetAddress gateway = route.getGateway(); 4600 if (gateway instanceof Inet4Address) { 4601 if (PDBG) { 4602 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4603 + gateway.getHostAddress()); 4604 } 4605 address = macAddressFromRoute(gateway.getHostAddress()); 4606 /* The gateway's MAC address is known */ 4607 if ((address == null) && (timeout > 0)) { 4608 boolean reachable = false; 4609 try { 4610 reachable = gateway.isReachable(timeout); 4611 } catch (Exception e) { 4612 loge("updateDefaultRouteMacAddress exception reaching :" 4613 + gateway.getHostAddress()); 4614 4615 } finally { 4616 if (reachable == true) { 4617 4618 address = macAddressFromRoute(gateway.getHostAddress()); 4619 if (PDBG) { 4620 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4621 + gateway.getHostAddress() + " found " + address); 4622 } 4623 } 4624 } 4625 } 4626 if (address != null) { 4627 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4628 } 4629 } 4630 } 4631 } 4632 return address; 4633 } 4634 4635 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4636 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4637 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4638 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4639 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4640 } 4641 4642 private void sendRssiChangeBroadcast(final int newRssi) { 4643 try { 4644 mBatteryStats.noteWifiRssiChanged(newRssi); 4645 } catch (RemoteException e) { 4646 // Won't happen. 4647 } 4648 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4649 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4650 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4651 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4652 } 4653 4654 private void sendNetworkStateChangeBroadcast(String bssid) { 4655 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4656 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4657 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4658 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4659 if (bssid != null) 4660 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4661 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4662 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4663 // We no longer report MAC address to third-parties and our code does 4664 // not rely on this broadcast, so just send the default MAC address. 4665 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4666 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4667 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4668 } 4669 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4670 } 4671 4672 private WifiInfo getWiFiInfoForUid(int uid) { 4673 if (Binder.getCallingUid() == Process.myUid()) { 4674 return mWifiInfo; 4675 } 4676 4677 WifiInfo result = new WifiInfo(mWifiInfo); 4678 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4679 4680 IBinder binder = mFacade.getService("package"); 4681 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4682 4683 try { 4684 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4685 uid) == PackageManager.PERMISSION_GRANTED) { 4686 result.setMacAddress(mWifiInfo.getMacAddress()); 4687 } 4688 } catch (RemoteException e) { 4689 Log.e(TAG, "Error checking receiver permission", e); 4690 } 4691 4692 return result; 4693 } 4694 4695 private void sendLinkConfigurationChangedBroadcast() { 4696 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4697 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4698 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4699 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4700 } 4701 4702 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4703 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4704 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4705 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4706 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4707 } 4708 4709 /** 4710 * Record the detailed state of a network. 4711 * 4712 * @param state the new {@code DetailedState} 4713 */ 4714 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4715 boolean hidden = false; 4716 4717 if (linkDebouncing || isRoaming()) { 4718 // There is generally a confusion in the system about colluding 4719 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4720 // which leads to multiple confusion. 4721 // 4722 // If link is de-bouncing or roaming, we already have an IP address 4723 // as well we were connected and are doing L2 cycles of 4724 // reconnecting or renewing IP address to check that we still have it 4725 // This L2 link flapping should ne be reflected into the Network state 4726 // which is the state of the WiFi Network visible to Layer 3 and applications 4727 // Note that once debouncing and roaming are completed, we will 4728 // set the Network state to where it should be, or leave it as unchanged 4729 // 4730 hidden = true; 4731 } 4732 if (DBG) { 4733 log("setDetailed state, old =" 4734 + mNetworkInfo.getDetailedState() + " and new state=" + state 4735 + " hidden=" + hidden); 4736 } 4737 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null 4738 && !mWifiInfo.getSSID().equals(WifiSsid.NONE)) { 4739 // Always indicate that SSID has changed 4740 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4741 if (DBG) { 4742 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4743 } 4744 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4745 sendNetworkStateChangeBroadcast(null); 4746 } 4747 } 4748 if (hidden == true) { 4749 return false; 4750 } 4751 4752 if (state != mNetworkInfo.getDetailedState()) { 4753 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4754 if (mNetworkAgent != null) { 4755 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4756 } 4757 sendNetworkStateChangeBroadcast(null); 4758 return true; 4759 } 4760 return false; 4761 } 4762 4763 private DetailedState getNetworkDetailedState() { 4764 return mNetworkInfo.getDetailedState(); 4765 } 4766 4767 private SupplicantState handleSupplicantStateChange(Message message) { 4768 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4769 SupplicantState state = stateChangeResult.state; 4770 // Supplicant state change 4771 // [31-13] Reserved for future use 4772 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4773 // 50023 supplicant_state_changed (custom|1|5) 4774 mWifiInfo.setSupplicantState(state); 4775 // Network id is only valid when we start connecting 4776 if (SupplicantState.isConnecting(state)) { 4777 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4778 } else { 4779 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4780 } 4781 4782 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4783 4784 if (mWhiteListedSsids != null 4785 && mWhiteListedSsids.length > 0 4786 && stateChangeResult.wifiSsid != null) { 4787 String SSID = stateChangeResult.wifiSsid.toString(); 4788 String currentSSID = mWifiInfo.getSSID(); 4789 if (SSID != null 4790 && currentSSID != null 4791 && !SSID.equals(WifiSsid.NONE)) { 4792 // Remove quote before comparing 4793 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4794 && SSID.charAt(SSID.length() - 1) == '"') 4795 { 4796 SSID = SSID.substring(1, SSID.length() - 1); 4797 } 4798 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4799 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4800 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4801 } 4802 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4803 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4804 targetWificonfiguration 4805 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4806 transitionTo(mRoamingState); 4807 } 4808 } 4809 } 4810 4811 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4812 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4813 4814 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4815 4816 return state; 4817 } 4818 4819 /** 4820 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4821 * using the interface, stopping DHCP & disabling interface 4822 */ 4823 private void handleNetworkDisconnect() { 4824 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4825 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4826 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4827 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4828 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4829 4830 stopRssiMonitoringOffload(); 4831 4832 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4833 4834 stopDhcp(); 4835 4836 try { 4837 mNwService.clearInterfaceAddresses(mInterfaceName); 4838 mNwService.disableIpv6(mInterfaceName); 4839 } catch (Exception e) { 4840 loge("Failed to clear addresses or disable ipv6" + e); 4841 } 4842 4843 /* Reset data structures */ 4844 mBadLinkspeedcount = 0; 4845 mWifiInfo.reset(); 4846 linkDebouncing = false; 4847 /* Reset roaming parameters */ 4848 mAutoRoaming = false; 4849 4850 /** 4851 * fullBandConnectedTimeIntervalMilli: 4852 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4853 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4854 * Initialize to sane value = 20 seconds 4855 */ 4856 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4857 4858 setNetworkDetailedState(DetailedState.DISCONNECTED); 4859 if (mNetworkAgent != null) { 4860 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4861 mNetworkAgent = null; 4862 } 4863 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4864 4865 /* Clear network properties */ 4866 clearLinkProperties(); 4867 4868 /* Cend event to CM & network change broadcast */ 4869 sendNetworkStateChangeBroadcast(mLastBssid); 4870 4871 /* Cancel auto roam requests */ 4872 autoRoamSetBSSID(mLastNetworkId, "any"); 4873 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4874 mLastBssid = null; 4875 registerDisconnected(); 4876 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4877 } 4878 4879 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4880 /* Socket connection can be lost when we do a graceful shutdown 4881 * or when the driver is hung. Ensure supplicant is stopped here. 4882 */ 4883 if (killSupplicant) { 4884 mWifiMonitor.killSupplicant(mP2pSupported); 4885 } 4886 mWifiNative.closeSupplicantConnection(); 4887 sendSupplicantConnectionChangedBroadcast(false); 4888 setWifiState(WIFI_STATE_DISABLED); 4889 } 4890 4891 void handlePreDhcpSetup() { 4892 mDhcpActive = true; 4893 if (!mBluetoothConnectionActive) { 4894 /* 4895 * There are problems setting the Wi-Fi driver's power 4896 * mode to active when bluetooth coexistence mode is 4897 * enabled or sense. 4898 * <p> 4899 * We set Wi-Fi to active mode when 4900 * obtaining an IP address because we've found 4901 * compatibility issues with some routers with low power 4902 * mode. 4903 * <p> 4904 * In order for this active power mode to properly be set, 4905 * we disable coexistence mode until we're done with 4906 * obtaining an IP address. One exception is if we 4907 * are currently connected to a headset, since disabling 4908 * coexistence would interrupt that connection. 4909 */ 4910 // Disable the coexistence mode 4911 mWifiNative.setBluetoothCoexistenceMode( 4912 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4913 } 4914 4915 // Disable power save and suspend optimizations during DHCP 4916 // Note: The order here is important for now. Brcm driver changes 4917 // power settings when we control suspend mode optimizations. 4918 // TODO: Remove this comment when the driver is fixed. 4919 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4920 mWifiNative.setPowerSave(false); 4921 4922 // Update link layer stats 4923 getWifiLinkLayerStats(false); 4924 4925 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4926 Message msg = new Message(); 4927 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4928 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4929 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4930 msg.obj = mDhcpStateMachine; 4931 mWifiP2pChannel.sendMessage(msg); 4932 } 4933 4934 4935 private boolean useLegacyDhcpClient() { 4936 return mFacade.getIntegerSetting(mContext, Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4937 } 4938 4939 private void maybeInitDhcpStateMachine() { 4940 if (mDhcpStateMachine == null) { 4941 if (useLegacyDhcpClient()) { 4942 mDhcpStateMachine = mFacade.makeDhcpStateMachine( 4943 mContext, WifiStateMachine.this, mInterfaceName); 4944 } else { 4945 mDhcpStateMachine = mFacade.makeDhcpStateMachine( 4946 mContext, WifiStateMachine.this, mInterfaceName); 4947 } 4948 } 4949 } 4950 4951 void startDhcp() { 4952 maybeInitDhcpStateMachine(); 4953 mDhcpStateMachine.registerForPreDhcpNotification(); 4954 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4955 } 4956 4957 void renewDhcp() { 4958 maybeInitDhcpStateMachine(); 4959 mDhcpStateMachine.registerForPreDhcpNotification(); 4960 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4961 } 4962 4963 void stopDhcp() { 4964 if (mDhcpStateMachine != null) { 4965 /* In case we were in middle of DHCP operation restore back powermode */ 4966 handlePostDhcpSetup(); 4967 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4968 } 4969 } 4970 4971 void handlePostDhcpSetup() { 4972 /* Restore power save and suspend optimizations */ 4973 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4974 mWifiNative.setPowerSave(true); 4975 4976 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4977 4978 // Set the coexistence mode back to its default value 4979 mWifiNative.setBluetoothCoexistenceMode( 4980 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4981 4982 mDhcpActive = false; 4983 } 4984 4985 void connectScanningService() { 4986 4987 if (mWifiScanner == null) { 4988 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4989 } 4990 } 4991 4992 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4993 4994 if (PDBG) { 4995 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 4996 logd("link address " + dhcpResults.ipAddress); 4997 } 4998 4999 Inet4Address addr; 5000 synchronized (mDhcpResultsLock) { 5001 mDhcpResults = dhcpResults; 5002 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5003 } 5004 5005 if (isRoaming()) { 5006 int previousAddress = mWifiInfo.getIpAddress(); 5007 int newAddress = NetworkUtils.inetAddressToInt(addr); 5008 if (previousAddress != newAddress) { 5009 logd("handleIPv4Success, roaming and address changed" + 5010 mWifiInfo + " got: " + addr); 5011 } 5012 } 5013 mWifiInfo.setInetAddress(addr); 5014 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5015 updateLinkProperties(reason); 5016 } 5017 5018 private void handleSuccessfulIpConfiguration() { 5019 mLastSignalLevel = -1; // Force update of signal strength 5020 WifiConfiguration c = getCurrentWifiConfiguration(); 5021 if (c != null) { 5022 // Reset IP failure tracking 5023 c.getNetworkSelectionStatus().clearDisableReasonCounter( 5024 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 5025 5026 // Tell the framework whether the newly connected network is trusted or untrusted. 5027 updateCapabilities(c); 5028 } 5029 if (c != null) { 5030 ScanResult result = getCurrentScanResult(); 5031 if (result == null) { 5032 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5033 c.configKey()); 5034 } else { 5035 // Clear the per BSSID failure count 5036 result.numIpConfigFailures = 0; 5037 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5038 // any BSSID, even though it may already have a non zero ip failure count, 5039 // this will typically happen if the user walks away and come back to his arrea 5040 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5041 // in supplicant for a couple of hours or a day 5042 mWifiConfigStore.clearBssidBlacklist(); 5043 } 5044 } 5045 } 5046 5047 private void handleIPv4Failure(int reason) { 5048 synchronized(mDhcpResultsLock) { 5049 if (mDhcpResults != null) { 5050 mDhcpResults.clear(); 5051 } 5052 } 5053 if (PDBG) { 5054 logd("handleIPv4Failure"); 5055 } 5056 updateLinkProperties(reason); 5057 } 5058 5059 private void handleIpConfigurationLost() { 5060 mWifiInfo.setInetAddress(null); 5061 mWifiInfo.setMeteredHint(false); 5062 5063 mWifiConfigStore.updateNetworkSelectionStatus(mLastNetworkId, 5064 WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); 5065 5066 /* DHCP times out after about 30 seconds, we do a 5067 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5068 */ 5069 mWifiNative.disconnect(); 5070 } 5071 5072 // TODO: De-duplicated this and handleIpConfigurationLost(). 5073 private void handleIpReachabilityLost() { 5074 // No need to be told about any additional neighbors that might also 5075 // become unreachable--quiet them now while we start disconnecting. 5076 if (mIpReachabilityMonitor != null) { 5077 mIpReachabilityMonitor.clearLinkProperties(); 5078 } 5079 5080 mWifiInfo.setInetAddress(null); 5081 mWifiInfo.setMeteredHint(false); 5082 5083 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5084 5085 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5086 mWifiNative.disconnect(); 5087 } 5088 5089 private int convertFrequencyToChannelNumber(int frequency) { 5090 if (frequency >= 2412 && frequency <= 2484) { 5091 return (frequency -2412) / 5 + 1; 5092 } else if (frequency >= 5170 && frequency <=5825) { 5093 //DFS is included 5094 return (frequency -5170) / 5 + 34; 5095 } else { 5096 return 0; 5097 } 5098 } 5099 5100 private int chooseApChannel(int apBand) { 5101 int apChannel; 5102 int[] channel; 5103 5104 if (apBand == 0) { 5105 if (mWifiApConfigStore.allowed2GChannel == null || 5106 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5107 //most safe channel to use 5108 if(DBG) { 5109 Log.d(TAG, "No specified 2G allowed channel list"); 5110 } 5111 apChannel = 6; 5112 } else { 5113 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5114 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5115 } 5116 } else { 5117 //5G without DFS 5118 channel = mWifiNative.getChannelsForBand(2); 5119 if (channel != null && channel.length > 0) { 5120 apChannel = channel[mRandom.nextInt(channel.length)]; 5121 apChannel = convertFrequencyToChannelNumber(apChannel); 5122 } else { 5123 Log.e(TAG, "SoftAp do not get available channel list"); 5124 apChannel = 0; 5125 } 5126 } 5127 5128 if(DBG) { 5129 Log.d(TAG, "SoftAp set on channel " + apChannel); 5130 } 5131 5132 return apChannel; 5133 } 5134 5135 /* SoftAP configuration */ 5136 private boolean enableSoftAp() { 5137 if (mWifiNative.getInterfaces() != 0) { 5138 if (!mWifiNative.toggleInterface(0)) { 5139 if (DBG) Log.e(TAG, "toggleInterface failed"); 5140 return false; 5141 } 5142 } else { 5143 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5144 } 5145 5146 try { 5147 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5148 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5149 } catch (Exception e) { 5150 Log.e(TAG, "Failed to reload AP firmware " + e); 5151 } 5152 5153 if (mWifiNative.startHal() == false) { 5154 /* starting HAL is optional */ 5155 Log.e(TAG, "Failed to start HAL"); 5156 } 5157 return true; 5158 } 5159 5160 /* Current design is to not set the config on a running hostapd but instead 5161 * stop and start tethering when user changes config on a running access point 5162 * 5163 * TODO: Add control channel setup through hostapd that allows changing config 5164 * on a running daemon 5165 */ 5166 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5167 // set channel 5168 final WifiConfiguration config = new WifiConfiguration(configuration); 5169 5170 if (DBG) { 5171 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5172 } 5173 5174 //We need HAL support to set country code and get available channel list, if HAL is 5175 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5176 if (mWifiNative.isHalStarted()) { 5177 //set country code through HAL Here 5178 String countryCode = getCurrentCountryCode(); 5179 5180 if (countryCode != null) { 5181 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5182 if (config.apBand != 0) { 5183 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5184 //countrycode is mandatory for 5GHz 5185 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5186 return; 5187 } 5188 } 5189 } else { 5190 if (config.apBand != 0) { 5191 //countrycode is mandatory for 5GHz 5192 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5193 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5194 return; 5195 } 5196 } 5197 5198 if (config.apChannel == 0) { 5199 config.apChannel = chooseApChannel(config.apBand); 5200 if (config.apChannel == 0) { 5201 if(mWifiNative.isGetChannelsForBandSupported()) { 5202 //fail to get available channel 5203 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5204 return; 5205 } else { 5206 //for some old device, wifiHal may not be supportedget valid channels are not 5207 //supported 5208 config.apBand = 0; 5209 config.apChannel = 6; 5210 } 5211 } 5212 } 5213 } else { 5214 //for some old device, wifiHal may not be supported 5215 config.apBand = 0; 5216 config.apChannel = 6; 5217 } 5218 // Start hostapd on a separate thread 5219 new Thread(new Runnable() { 5220 public void run() { 5221 try { 5222 mNwService.startAccessPoint(config, mInterfaceName); 5223 } catch (Exception e) { 5224 loge("Exception in softap start " + e); 5225 try { 5226 mNwService.stopAccessPoint(mInterfaceName); 5227 mNwService.startAccessPoint(config, mInterfaceName); 5228 } catch (Exception e1) { 5229 loge("Exception in softap re-start " + e1); 5230 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5231 return; 5232 } 5233 } 5234 if (DBG) log("Soft AP start successful"); 5235 sendMessage(CMD_START_AP_SUCCESS); 5236 } 5237 }).start(); 5238 } 5239 5240 private byte[] macAddressFromString(String macString) { 5241 String[] macBytes = macString.split(":"); 5242 if (macBytes.length != 6) { 5243 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5244 } 5245 byte[] mac = new byte[6]; 5246 for (int i = 0; i < macBytes.length; i++) { 5247 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5248 mac[i] = hexVal.byteValue(); 5249 } 5250 return mac; 5251 } 5252 5253 /* 5254 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5255 * so as to record MAC address of default gateway. 5256 **/ 5257 private String macAddressFromRoute(String ipAddress) { 5258 String macAddress = null; 5259 BufferedReader reader = null; 5260 try { 5261 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5262 5263 // Skip over the line bearing colum titles 5264 String line = reader.readLine(); 5265 5266 while ((line = reader.readLine()) != null) { 5267 String[] tokens = line.split("[ ]+"); 5268 if (tokens.length < 6) { 5269 continue; 5270 } 5271 5272 // ARP column format is 5273 // Address HWType HWAddress Flags Mask IFace 5274 String ip = tokens[0]; 5275 String mac = tokens[3]; 5276 5277 if (ipAddress.equals(ip)) { 5278 macAddress = mac; 5279 break; 5280 } 5281 } 5282 5283 if (macAddress == null) { 5284 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5285 "/proc/net/arp"); 5286 } 5287 5288 } catch (FileNotFoundException e) { 5289 loge("Could not open /proc/net/arp to lookup mac address"); 5290 } catch (IOException e) { 5291 loge("Could not read /proc/net/arp to lookup mac address"); 5292 } finally { 5293 try { 5294 if (reader != null) { 5295 reader.close(); 5296 } 5297 } catch (IOException e) { 5298 // Do nothing 5299 } 5300 } 5301 return macAddress; 5302 5303 } 5304 5305 private class WifiNetworkFactory extends NetworkFactory { 5306 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5307 super(l, c, TAG, f); 5308 } 5309 5310 @Override 5311 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5312 ++mConnectionRequests; 5313 } 5314 5315 @Override 5316 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5317 --mConnectionRequests; 5318 } 5319 5320 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5321 pw.println("mConnectionRequests " + mConnectionRequests); 5322 } 5323 5324 } 5325 5326 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5327 private int mUntrustedReqCount; 5328 5329 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5330 super(l, c, tag, f); 5331 } 5332 5333 @Override 5334 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5335 if (!networkRequest.networkCapabilities.hasCapability( 5336 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5337 if (++mUntrustedReqCount == 1) { 5338 mWifiQualifiedNetworkSelector.setAllowUntrustedConnections(true); 5339 } 5340 } 5341 } 5342 5343 @Override 5344 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5345 if (!networkRequest.networkCapabilities.hasCapability( 5346 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5347 if (--mUntrustedReqCount == 0) { 5348 mWifiQualifiedNetworkSelector.setAllowUntrustedConnections(false); 5349 } 5350 } 5351 } 5352 5353 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5354 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5355 } 5356 } 5357 5358 void maybeRegisterNetworkFactory() { 5359 if (mNetworkFactory == null) { 5360 checkAndSetConnectivityInstance(); 5361 if (mCm != null) { 5362 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5363 NETWORKTYPE, mNetworkCapabilitiesFilter); 5364 mNetworkFactory.setScoreFilter(60); 5365 mNetworkFactory.register(); 5366 5367 // We can't filter untrusted network in the capabilities filter because a trusted 5368 // network would still satisfy a request that accepts untrusted ones. 5369 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5370 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5371 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5372 mUntrustedNetworkFactory.register(); 5373 } 5374 } 5375 } 5376 5377 /******************************************************** 5378 * HSM states 5379 *******************************************************/ 5380 5381 class DefaultState extends State { 5382 @Override 5383 public boolean processMessage(Message message) { 5384 logStateAndMessage(message, this); 5385 5386 switch (message.what) { 5387 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5388 AsyncChannel ac = (AsyncChannel) message.obj; 5389 if (ac == mWifiP2pChannel) { 5390 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5391 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5392 } else { 5393 loge("WifiP2pService connection failure, error=" + message.arg1); 5394 } 5395 } else { 5396 loge("got HALF_CONNECTED for unknown channel"); 5397 } 5398 break; 5399 } 5400 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5401 AsyncChannel ac = (AsyncChannel) message.obj; 5402 if (ac == mWifiP2pChannel) { 5403 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5404 //TODO: Re-establish connection to state machine after a delay 5405 // mWifiP2pChannel.connect(mContext, getHandler(), 5406 // mWifiP2pManager.getMessenger()); 5407 } 5408 break; 5409 } 5410 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5411 mBluetoothConnectionActive = (message.arg1 != 5412 BluetoothAdapter.STATE_DISCONNECTED); 5413 break; 5414 /* Synchronous call returns */ 5415 case CMD_PING_SUPPLICANT: 5416 case CMD_ENABLE_NETWORK: 5417 case CMD_ADD_OR_UPDATE_NETWORK: 5418 case CMD_REMOVE_NETWORK: 5419 case CMD_SAVE_CONFIG: 5420 replyToMessage(message, message.what, FAILURE); 5421 break; 5422 case CMD_GET_CAPABILITY_FREQ: 5423 replyToMessage(message, message.what, null); 5424 break; 5425 case CMD_GET_CONFIGURED_NETWORKS: 5426 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5427 break; 5428 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5429 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5430 break; 5431 case CMD_ENABLE_RSSI_POLL: 5432 mEnableRssiPolling = (message.arg1 == 1); 5433 break; 5434 case CMD_SET_HIGH_PERF_MODE: 5435 if (message.arg1 == 1) { 5436 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5437 } else { 5438 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5439 } 5440 break; 5441 case CMD_BOOT_COMPLETED: 5442 maybeRegisterNetworkFactory(); 5443 break; 5444 case CMD_SCREEN_STATE_CHANGED: 5445 handleScreenStateChanged(message.arg1 != 0); 5446 break; 5447 /* Discard */ 5448 case CMD_START_SCAN: 5449 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5450 break; 5451 case CMD_START_SUPPLICANT: 5452 case CMD_STOP_SUPPLICANT: 5453 case CMD_STOP_SUPPLICANT_FAILED: 5454 case CMD_START_DRIVER: 5455 case CMD_STOP_DRIVER: 5456 case CMD_DRIVER_START_TIMED_OUT: 5457 case CMD_START_AP: 5458 case CMD_START_AP_SUCCESS: 5459 case CMD_START_AP_FAILURE: 5460 case CMD_STOP_AP: 5461 case CMD_TETHER_STATE_CHANGE: 5462 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5463 case CMD_DISCONNECT: 5464 case CMD_RECONNECT: 5465 case CMD_REASSOCIATE: 5466 case CMD_RELOAD_TLS_AND_RECONNECT: 5467 case WifiMonitor.SUP_CONNECTION_EVENT: 5468 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5469 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5470 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5471 case WifiMonitor.SCAN_RESULTS_EVENT: 5472 case WifiMonitor.SCAN_FAILED_EVENT: 5473 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5474 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5475 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5476 case WifiMonitor.WPS_OVERLAP_EVENT: 5477 case CMD_BLACKLIST_NETWORK: 5478 case CMD_CLEAR_BLACKLIST: 5479 case CMD_SET_OPERATIONAL_MODE: 5480 case CMD_SET_FREQUENCY_BAND: 5481 case CMD_RSSI_POLL: 5482 case CMD_ENABLE_ALL_NETWORKS: 5483 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5484 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5485 /* Handled by WifiApConfigStore */ 5486 case CMD_SET_AP_CONFIG: 5487 case CMD_SET_AP_CONFIG_COMPLETED: 5488 case CMD_REQUEST_AP_CONFIG: 5489 case CMD_RESPONSE_AP_CONFIG: 5490 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5491 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5492 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5493 case CMD_DISABLE_P2P_RSP: 5494 case WifiMonitor.SUP_REQUEST_IDENTITY: 5495 case CMD_TEST_NETWORK_DISCONNECT: 5496 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5497 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5498 case CMD_TARGET_BSSID: 5499 case CMD_AUTO_CONNECT: 5500 case CMD_AUTO_ROAM: 5501 case CMD_AUTO_SAVE_NETWORK: 5502 case CMD_ASSOCIATED_BSSID: 5503 case CMD_UNWANTED_NETWORK: 5504 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5505 case CMD_ROAM_WATCHDOG_TIMER: 5506 case CMD_DISABLE_EPHEMERAL_NETWORK: 5507 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5508 case CMD_STARTED_PNO_DBG: 5509 case CMD_STARTED_GSCAN_DBG: 5510 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5511 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5512 break; 5513 case CMD_SET_COUNTRY_CODE: 5514 String country = (String) message.obj; 5515 final boolean persist = (message.arg2 == 1); 5516 final int sequence = message.arg1; 5517 if (sequence != mCountryCodeSequence.get()) { 5518 if (DBG) log("set country code ignored due to sequnce num"); 5519 break; 5520 } 5521 5522 if (persist) { 5523 country = country.toUpperCase(Locale.ROOT); 5524 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5525 Settings.Global.putString(mContext.getContentResolver(), 5526 Settings.Global.WIFI_COUNTRY_CODE, 5527 country == null ? "" : country); 5528 } 5529 5530 break; 5531 case DhcpStateMachine.CMD_ON_QUIT: 5532 mDhcpStateMachine = null; 5533 break; 5534 case CMD_SET_SUSPEND_OPT_ENABLED: 5535 if (message.arg1 == 1) { 5536 mSuspendWakeLock.release(); 5537 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5538 } else { 5539 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5540 } 5541 break; 5542 case WifiMonitor.DRIVER_HUNG_EVENT: 5543 setSupplicantRunning(false); 5544 setSupplicantRunning(true); 5545 break; 5546 case WifiManager.CONNECT_NETWORK: 5547 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5548 WifiManager.BUSY); 5549 break; 5550 case WifiManager.FORGET_NETWORK: 5551 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5552 WifiManager.BUSY); 5553 break; 5554 case WifiManager.SAVE_NETWORK: 5555 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5556 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5557 WifiManager.BUSY); 5558 break; 5559 case WifiManager.START_WPS: 5560 replyToMessage(message, WifiManager.WPS_FAILED, 5561 WifiManager.BUSY); 5562 break; 5563 case WifiManager.CANCEL_WPS: 5564 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5565 WifiManager.BUSY); 5566 break; 5567 case WifiManager.DISABLE_NETWORK: 5568 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5569 WifiManager.BUSY); 5570 break; 5571 case WifiManager.RSSI_PKTCNT_FETCH: 5572 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5573 WifiManager.BUSY); 5574 break; 5575 case CMD_GET_SUPPORTED_FEATURES: 5576 int featureSet = mWifiNative.getSupportedFeatureSet(); 5577 replyToMessage(message, message.what, featureSet); 5578 break; 5579 case CMD_FIRMWARE_ALERT: 5580 if (mWifiLogger != null) { 5581 byte[] buffer = (byte[])message.obj; 5582 mWifiLogger.captureAlertData(message.arg1, buffer); 5583 } 5584 break; 5585 case CMD_GET_LINK_LAYER_STATS: 5586 // Not supported hence reply with error message 5587 replyToMessage(message, message.what, null); 5588 break; 5589 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5590 NetworkInfo info = (NetworkInfo) message.obj; 5591 mP2pConnected.set(info.isConnected()); 5592 break; 5593 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5594 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5595 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5596 break; 5597 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5598 case CMD_UPDATE_LINKPROPERTIES: 5599 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5600 break; 5601 case CMD_GET_MATCHING_CONFIG: 5602 replyToMessage(message, message.what); 5603 break; 5604 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5605 case CMD_IP_CONFIGURATION_LOST: 5606 case CMD_IP_REACHABILITY_LOST: 5607 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5608 break; 5609 case CMD_GET_CONNECTION_STATISTICS: 5610 replyToMessage(message, message.what, mWifiConnectionStatistics); 5611 break; 5612 case CMD_REMOVE_APP_CONFIGURATIONS: 5613 deferMessage(message); 5614 break; 5615 case CMD_REMOVE_USER_CONFIGURATIONS: 5616 deferMessage(message); 5617 break; 5618 case CMD_START_IP_PACKET_OFFLOAD: 5619 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5620 message.arg1, 5621 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5622 break; 5623 case CMD_STOP_IP_PACKET_OFFLOAD: 5624 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5625 message.arg1, 5626 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5627 break; 5628 case CMD_START_RSSI_MONITORING_OFFLOAD: 5629 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5630 break; 5631 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5632 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5633 break; 5634 default: 5635 loge("Error! unhandled message" + message); 5636 break; 5637 } 5638 return HANDLED; 5639 } 5640 } 5641 5642 class InitialState extends State { 5643 @Override 5644 public void enter() { 5645 mWifiNative.stopHal(); 5646 mWifiNative.unloadDriver(); 5647 if (mWifiP2pChannel == null) { 5648 mWifiP2pChannel = new AsyncChannel(); 5649 mWifiP2pChannel.connect(mContext, getHandler(), 5650 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5651 } 5652 5653 if (mWifiApConfigChannel == null) { 5654 mWifiApConfigChannel = new AsyncChannel(); 5655 mWifiApConfigStore = mFacade.makeApConfigStore(mContext, getHandler()); 5656 mWifiApConfigStore.loadApConfiguration(); 5657 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5658 mWifiApConfigStore.getMessenger()); 5659 } 5660 5661 if (mWifiConfigStore.enableHalBasedPno.get()) { 5662 // make sure developer Settings are in sync with the config option 5663 mHalBasedPnoEnableInDevSettings = true; 5664 } 5665 } 5666 @Override 5667 public boolean processMessage(Message message) { 5668 logStateAndMessage(message, this); 5669 switch (message.what) { 5670 case CMD_START_SUPPLICANT: 5671 if (mWifiNative.loadDriver()) { 5672 try { 5673 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5674 } catch (Exception e) { 5675 loge("Failed to reload STA firmware " + e); 5676 // Continue 5677 } 5678 5679 try { 5680 // A runtime crash can leave the interface up and 5681 // IP addresses configured, and this affects 5682 // connectivity when supplicant starts up. 5683 // Ensure interface is down and we have no IP 5684 // addresses before a supplicant start. 5685 mNwService.setInterfaceDown(mInterfaceName); 5686 mNwService.clearInterfaceAddresses(mInterfaceName); 5687 5688 // Set privacy extensions 5689 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5690 5691 // IPv6 is enabled only as long as access point is connected since: 5692 // - IPv6 addresses and routes stick around after disconnection 5693 // - kernel is unaware when connected and fails to start IPv6 negotiation 5694 // - kernel can start autoconfiguration when 802.1x is not complete 5695 mNwService.disableIpv6(mInterfaceName); 5696 } catch (RemoteException re) { 5697 loge("Unable to change interface settings: " + re); 5698 } catch (IllegalStateException ie) { 5699 loge("Unable to change interface settings: " + ie); 5700 } 5701 5702 /* Stop a running supplicant after a runtime restart 5703 * Avoids issues with drivers that do not handle interface down 5704 * on a running supplicant properly. 5705 */ 5706 mWifiMonitor.killSupplicant(mP2pSupported); 5707 5708 if (mWifiNative.startHal() == false) { 5709 /* starting HAL is optional */ 5710 loge("Failed to start HAL"); 5711 } 5712 5713 if (mWifiNative.startSupplicant(mP2pSupported)) { 5714 setWifiState(WIFI_STATE_ENABLING); 5715 if (DBG) log("Supplicant start successful"); 5716 mWifiMonitor.startMonitoring(mInterfaceName); 5717 transitionTo(mSupplicantStartingState); 5718 } else { 5719 loge("Failed to start supplicant!"); 5720 } 5721 } else { 5722 loge("Failed to load driver"); 5723 } 5724 break; 5725 case CMD_START_AP: 5726 if (mWifiNative.loadDriver() == false) { 5727 loge("Failed to load driver for softap"); 5728 } else { 5729 if (enableSoftAp() == true) { 5730 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5731 transitionTo(mSoftApStartingState); 5732 } else { 5733 setWifiApState(WIFI_AP_STATE_FAILED, 5734 WifiManager.SAP_START_FAILURE_GENERAL); 5735 transitionTo(mInitialState); 5736 } 5737 } 5738 break; 5739 default: 5740 return NOT_HANDLED; 5741 } 5742 return HANDLED; 5743 } 5744 } 5745 5746 class SupplicantStartingState extends State { 5747 private void initializeWpsDetails() { 5748 String detail; 5749 detail = SystemProperties.get("ro.product.name", ""); 5750 if (!mWifiNative.setDeviceName(detail)) { 5751 loge("Failed to set device name " + detail); 5752 } 5753 detail = SystemProperties.get("ro.product.manufacturer", ""); 5754 if (!mWifiNative.setManufacturer(detail)) { 5755 loge("Failed to set manufacturer " + detail); 5756 } 5757 detail = SystemProperties.get("ro.product.model", ""); 5758 if (!mWifiNative.setModelName(detail)) { 5759 loge("Failed to set model name " + detail); 5760 } 5761 detail = SystemProperties.get("ro.product.model", ""); 5762 if (!mWifiNative.setModelNumber(detail)) { 5763 loge("Failed to set model number " + detail); 5764 } 5765 detail = SystemProperties.get("ro.serialno", ""); 5766 if (!mWifiNative.setSerialNumber(detail)) { 5767 loge("Failed to set serial number " + detail); 5768 } 5769 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5770 loge("Failed to set WPS config methods"); 5771 } 5772 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5773 loge("Failed to set primary device type " + mPrimaryDeviceType); 5774 } 5775 } 5776 5777 @Override 5778 public boolean processMessage(Message message) { 5779 logStateAndMessage(message, this); 5780 5781 switch(message.what) { 5782 case WifiMonitor.SUP_CONNECTION_EVENT: 5783 if (DBG) log("Supplicant connection established"); 5784 setWifiState(WIFI_STATE_ENABLED); 5785 mSupplicantRestartCount = 0; 5786 /* Reset the supplicant state to indicate the supplicant 5787 * state is not known at this time */ 5788 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5789 /* Initialize data structures */ 5790 mLastBssid = null; 5791 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5792 mLastSignalLevel = -1; 5793 5794 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5795 /* set frequency band of operation */ 5796 setFrequencyBand(); 5797 mWifiNative.enableSaveConfig(); 5798 mWifiConfigStore.loadAndEnableAllNetworks(); 5799 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5800 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5801 } 5802 initializeWpsDetails(); 5803 5804 sendSupplicantConnectionChangedBroadcast(true); 5805 transitionTo(mDriverStartedState); 5806 break; 5807 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5808 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5809 loge("Failed to setup control channel, restart supplicant"); 5810 mWifiMonitor.killSupplicant(mP2pSupported); 5811 transitionTo(mInitialState); 5812 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5813 } else { 5814 loge("Failed " + mSupplicantRestartCount + 5815 " times to start supplicant, unload driver"); 5816 mSupplicantRestartCount = 0; 5817 setWifiState(WIFI_STATE_UNKNOWN); 5818 transitionTo(mInitialState); 5819 } 5820 break; 5821 case CMD_START_SUPPLICANT: 5822 case CMD_STOP_SUPPLICANT: 5823 case CMD_START_AP: 5824 case CMD_STOP_AP: 5825 case CMD_START_DRIVER: 5826 case CMD_STOP_DRIVER: 5827 case CMD_SET_OPERATIONAL_MODE: 5828 case CMD_SET_COUNTRY_CODE: 5829 case CMD_SET_FREQUENCY_BAND: 5830 case CMD_START_PACKET_FILTERING: 5831 case CMD_STOP_PACKET_FILTERING: 5832 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5833 deferMessage(message); 5834 break; 5835 default: 5836 return NOT_HANDLED; 5837 } 5838 return HANDLED; 5839 } 5840 } 5841 5842 class SupplicantStartedState extends State { 5843 @Override 5844 public void enter() { 5845 /* Wifi is available as long as we have a connection to supplicant */ 5846 mNetworkInfo.setIsAvailable(true); 5847 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5848 5849 int defaultInterval = mContext.getResources().getInteger( 5850 R.integer.config_wifi_supplicant_scan_interval); 5851 5852 mSupplicantScanIntervalMs = mFacade.getLongSetting(mContext, 5853 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5854 defaultInterval); 5855 5856 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5857 mWifiNative.setExternalSim(true); 5858 5859 /* turn on use of DFS channels */ 5860 mWifiNative.setDfsFlag(true); 5861 5862 /* set country code */ 5863 initializeCountryCode(); 5864 5865 setRandomMacOui(); 5866 mWifiNative.enableAutoConnect(false); 5867 } 5868 5869 @Override 5870 public boolean processMessage(Message message) { 5871 logStateAndMessage(message, this); 5872 5873 switch(message.what) { 5874 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5875 if (mP2pSupported) { 5876 transitionTo(mWaitForP2pDisableState); 5877 } else { 5878 transitionTo(mSupplicantStoppingState); 5879 } 5880 break; 5881 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5882 loge("Connection lost, restart supplicant"); 5883 handleSupplicantConnectionLoss(true); 5884 handleNetworkDisconnect(); 5885 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5886 if (mP2pSupported) { 5887 transitionTo(mWaitForP2pDisableState); 5888 } else { 5889 transitionTo(mInitialState); 5890 } 5891 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5892 break; 5893 case WifiMonitor.SCAN_RESULTS_EVENT: 5894 case WifiMonitor.SCAN_FAILED_EVENT: 5895 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5896 noteScanEnd(); 5897 setScanResults(); 5898 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5899 /* Just updated results from full scan, let apps know about this */ 5900 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5901 sendScanResultsAvailableBroadcast(scanSucceeded); 5902 } 5903 mSendScanResultsBroadcast = false; 5904 mIsScanOngoing = false; 5905 mIsFullScanOngoing = false; 5906 if (mBufferedScanMsg.size() > 0) 5907 sendMessage(mBufferedScanMsg.remove()); 5908 break; 5909 case CMD_PING_SUPPLICANT: 5910 boolean ok = mWifiNative.ping(); 5911 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5912 break; 5913 case CMD_GET_CAPABILITY_FREQ: 5914 String freqs = mWifiNative.getFreqCapability(); 5915 replyToMessage(message, message.what, freqs); 5916 break; 5917 case CMD_START_AP: 5918 /* Cannot start soft AP while in client mode */ 5919 loge("Failed to start soft AP with a running supplicant"); 5920 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5921 break; 5922 case CMD_SET_OPERATIONAL_MODE: 5923 mOperationalMode = message.arg1; 5924 mWifiConfigStore. 5925 setAndEnableLastSelectedConfiguration( 5926 WifiConfiguration.INVALID_NETWORK_ID); 5927 break; 5928 case CMD_TARGET_BSSID: 5929 // Trying to associate to this BSSID 5930 if (message.obj != null) { 5931 mTargetRoamBSSID = (String) message.obj; 5932 } 5933 break; 5934 case CMD_GET_LINK_LAYER_STATS: 5935 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5936 if (stats == null) { 5937 // When firmware doesnt support link layer stats, return an empty object 5938 stats = new WifiLinkLayerStats(); 5939 } 5940 replyToMessage(message, message.what, stats); 5941 break; 5942 case CMD_SET_COUNTRY_CODE: 5943 String country = (String) message.obj; 5944 final boolean persist = (message.arg2 == 1); 5945 final int sequence = message.arg1; 5946 if (sequence != mCountryCodeSequence.get()) { 5947 if (DBG) log("set country code ignored due to sequnce num"); 5948 break; 5949 } 5950 5951 country = country.toUpperCase(Locale.ROOT); 5952 5953 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5954 5955 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 5956 if (mWifiNative.setCountryCode(country)) { 5957 mDriverSetCountryCode = country; 5958 } else { 5959 loge("Failed to set country code " + country); 5960 } 5961 } 5962 5963 if (persist) { 5964 Settings.Global.putString(mContext.getContentResolver(), 5965 Settings.Global.WIFI_COUNTRY_CODE, 5966 country == null ? "" : country); 5967 } 5968 5969 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5970 break; 5971 default: 5972 return NOT_HANDLED; 5973 } 5974 return HANDLED; 5975 } 5976 5977 @Override 5978 public void exit() { 5979 mNetworkInfo.setIsAvailable(false); 5980 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5981 } 5982 } 5983 5984 class SupplicantStoppingState extends State { 5985 @Override 5986 public void enter() { 5987 /* Send any reset commands to supplicant before shutting it down */ 5988 handleNetworkDisconnect(); 5989 if (mDhcpStateMachine != null) { 5990 mDhcpStateMachine.doQuit(); 5991 } 5992 5993 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5994 if (suppState == null) suppState = "unknown"; 5995 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5996 if (p2pSuppState == null) p2pSuppState = "unknown"; 5997 5998 logd("SupplicantStoppingState: stopSupplicant " 5999 + " init.svc.wpa_supplicant=" + suppState 6000 + " init.svc.p2p_supplicant=" + p2pSuppState); 6001 mWifiMonitor.stopSupplicant(); 6002 6003 /* Send ourselves a delayed message to indicate failure after a wait time */ 6004 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 6005 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 6006 setWifiState(WIFI_STATE_DISABLING); 6007 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6008 } 6009 @Override 6010 public boolean processMessage(Message message) { 6011 logStateAndMessage(message, this); 6012 6013 switch(message.what) { 6014 case WifiMonitor.SUP_CONNECTION_EVENT: 6015 loge("Supplicant connection received while stopping"); 6016 break; 6017 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6018 if (DBG) log("Supplicant connection lost"); 6019 handleSupplicantConnectionLoss(false); 6020 transitionTo(mInitialState); 6021 break; 6022 case CMD_STOP_SUPPLICANT_FAILED: 6023 if (message.arg1 == mSupplicantStopFailureToken) { 6024 loge("Timed out on a supplicant stop, kill and proceed"); 6025 handleSupplicantConnectionLoss(true); 6026 transitionTo(mInitialState); 6027 } 6028 break; 6029 case CMD_START_SUPPLICANT: 6030 case CMD_STOP_SUPPLICANT: 6031 case CMD_START_AP: 6032 case CMD_STOP_AP: 6033 case CMD_START_DRIVER: 6034 case CMD_STOP_DRIVER: 6035 case CMD_SET_OPERATIONAL_MODE: 6036 case CMD_SET_COUNTRY_CODE: 6037 case CMD_SET_FREQUENCY_BAND: 6038 case CMD_START_PACKET_FILTERING: 6039 case CMD_STOP_PACKET_FILTERING: 6040 deferMessage(message); 6041 break; 6042 default: 6043 return NOT_HANDLED; 6044 } 6045 return HANDLED; 6046 } 6047 } 6048 6049 class DriverStartingState extends State { 6050 private int mTries; 6051 @Override 6052 public void enter() { 6053 mTries = 1; 6054 /* Send ourselves a delayed message to start driver a second time */ 6055 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6056 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6057 } 6058 @Override 6059 public boolean processMessage(Message message) { 6060 logStateAndMessage(message, this); 6061 6062 switch(message.what) { 6063 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6064 SupplicantState state = handleSupplicantStateChange(message); 6065 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6066 * a state that indicates driver has started, it is ready to 6067 * receive driver commands 6068 */ 6069 if (SupplicantState.isDriverActive(state)) { 6070 transitionTo(mDriverStartedState); 6071 } 6072 break; 6073 case CMD_DRIVER_START_TIMED_OUT: 6074 if (message.arg1 == mDriverStartToken) { 6075 if (mTries >= 2) { 6076 loge("Failed to start driver after " + mTries); 6077 transitionTo(mDriverStoppedState); 6078 } else { 6079 loge("Driver start failed, retrying"); 6080 mWakeLock.acquire(); 6081 mWifiNative.startDriver(); 6082 mWakeLock.release(); 6083 6084 ++mTries; 6085 /* Send ourselves a delayed message to start driver again */ 6086 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6087 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6088 } 6089 } 6090 break; 6091 /* Queue driver commands & connection events */ 6092 case CMD_START_DRIVER: 6093 case CMD_STOP_DRIVER: 6094 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6095 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6096 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6097 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6098 case WifiMonitor.WPS_OVERLAP_EVENT: 6099 case CMD_SET_COUNTRY_CODE: 6100 case CMD_SET_FREQUENCY_BAND: 6101 case CMD_START_PACKET_FILTERING: 6102 case CMD_STOP_PACKET_FILTERING: 6103 case CMD_START_SCAN: 6104 case CMD_DISCONNECT: 6105 case CMD_REASSOCIATE: 6106 case CMD_RECONNECT: 6107 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6108 deferMessage(message); 6109 break; 6110 case WifiMonitor.SCAN_RESULTS_EVENT: 6111 case WifiMonitor.SCAN_FAILED_EVENT: 6112 // Loose scan results obtained in Driver Starting state, they can only confuse 6113 // the state machine 6114 break; 6115 default: 6116 return NOT_HANDLED; 6117 } 6118 return HANDLED; 6119 } 6120 } 6121 6122 class DriverStartedState extends State { 6123 @Override 6124 public void enter() { 6125 6126 if (PDBG) { 6127 logd("DriverStartedState enter"); 6128 } 6129 6130 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6131 mIsRunning = true; 6132 updateBatteryWorkSource(null); 6133 /** 6134 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6135 * When this mode is on, some of the low-level scan parameters used by the 6136 * driver are changed to reduce interference with bluetooth 6137 */ 6138 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6139 /* initialize network state */ 6140 setNetworkDetailedState(DetailedState.DISCONNECTED); 6141 6142 /* Remove any filtering on Multicast v6 at start */ 6143 mWifiNative.stopFilteringMulticastV6Packets(); 6144 6145 /* Reset Multicast v4 filtering state */ 6146 if (mFilteringMulticastV4Packets.get()) { 6147 mWifiNative.startFilteringMulticastV4Packets(); 6148 } else { 6149 mWifiNative.stopFilteringMulticastV4Packets(); 6150 } 6151 6152 mDhcpActive = false; 6153 6154 if (mOperationalMode != CONNECT_MODE) { 6155 mWifiNative.disconnect(); 6156 mWifiConfigStore.disableAllNetworks(); 6157 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6158 setWifiState(WIFI_STATE_DISABLED); 6159 } 6160 transitionTo(mScanModeState); 6161 } else { 6162 6163 // Status pulls in the current supplicant state and network connection state 6164 // events over the monitor connection. This helps framework sync up with 6165 // current supplicant state 6166 // TODO: actually check th supplicant status string and make sure the supplicant 6167 // is in disconnecte4d state. 6168 mWifiNative.status(); 6169 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6170 transitionTo(mDisconnectedState); 6171 transitionTo(mDisconnectedState); 6172 } 6173 6174 // We may have missed screen update at boot 6175 if (mScreenBroadcastReceived.get() == false) { 6176 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6177 Context.POWER_SERVICE); 6178 handleScreenStateChanged(powerManager.isScreenOn()); 6179 } else { 6180 // Set the right suspend mode settings 6181 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6182 && mUserWantsSuspendOpt.get()); 6183 } 6184 mWifiNative.setPowerSave(true); 6185 6186 if (mP2pSupported) { 6187 if (mOperationalMode == CONNECT_MODE) { 6188 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6189 } else { 6190 // P2P statemachine starts in disabled state, and is not enabled until 6191 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6192 // keep it disabled. 6193 } 6194 } 6195 6196 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6197 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6198 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6199 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6200 6201 mHalFeatureSet = mWifiNative.getSupportedFeatureSet(); 6202 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6203 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6204 mHalBasedPnoDriverSupported = true; 6205 } 6206 6207 // Enable link layer stats gathering 6208 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6209 6210 if (PDBG) { 6211 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6212 + " feature=" + mHalFeatureSet); 6213 } 6214 } 6215 6216 @Override 6217 public boolean processMessage(Message message) { 6218 logStateAndMessage(message, this); 6219 6220 switch(message.what) { 6221 case CMD_START_SCAN: 6222 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6223 break; 6224 case CMD_SET_FREQUENCY_BAND: 6225 int band = message.arg1; 6226 if (DBG) log("set frequency band " + band); 6227 if (mWifiNative.setBand(band)) { 6228 6229 if (PDBG) logd("did set frequency band " + band); 6230 6231 mFrequencyBand.set(band); 6232 // Flush old data - like scan results 6233 mWifiNative.bssFlush(); 6234 // Fetch the latest scan results when frequency band is set 6235// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6236 6237 if (PDBG) logd("done set frequency band " + band); 6238 6239 } else { 6240 loge("Failed to set frequency band " + band); 6241 } 6242 break; 6243 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6244 mBluetoothConnectionActive = (message.arg1 != 6245 BluetoothAdapter.STATE_DISCONNECTED); 6246 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6247 break; 6248 case CMD_STOP_DRIVER: 6249 int mode = message.arg1; 6250 6251 log("stop driver"); 6252 mWifiConfigStore.disableAllNetworks(); 6253 6254 if (getCurrentState() != mDisconnectedState) { 6255 mWifiNative.disconnect(); 6256 handleNetworkDisconnect(); 6257 } 6258 mWakeLock.acquire(); 6259 mWifiNative.stopDriver(); 6260 mWakeLock.release(); 6261 if (mP2pSupported) { 6262 transitionTo(mWaitForP2pDisableState); 6263 } else { 6264 transitionTo(mDriverStoppingState); 6265 } 6266 break; 6267 case CMD_START_DRIVER: 6268 if (mOperationalMode == CONNECT_MODE) { 6269 mWifiConfigStore.enableAllNetworks(); 6270 } 6271 break; 6272 case CMD_START_PACKET_FILTERING: 6273 if (message.arg1 == MULTICAST_V6) { 6274 mWifiNative.startFilteringMulticastV6Packets(); 6275 } else if (message.arg1 == MULTICAST_V4) { 6276 mWifiNative.startFilteringMulticastV4Packets(); 6277 } else { 6278 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6279 } 6280 break; 6281 case CMD_STOP_PACKET_FILTERING: 6282 if (message.arg1 == MULTICAST_V6) { 6283 mWifiNative.stopFilteringMulticastV6Packets(); 6284 } else if (message.arg1 == MULTICAST_V4) { 6285 mWifiNative.stopFilteringMulticastV4Packets(); 6286 } else { 6287 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6288 } 6289 break; 6290 case CMD_SET_SUSPEND_OPT_ENABLED: 6291 if (message.arg1 == 1) { 6292 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6293 mSuspendWakeLock.release(); 6294 } else { 6295 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6296 } 6297 break; 6298 case CMD_SET_HIGH_PERF_MODE: 6299 if (message.arg1 == 1) { 6300 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6301 } else { 6302 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6303 } 6304 break; 6305 case CMD_ENABLE_TDLS: 6306 if (message.obj != null) { 6307 String remoteAddress = (String) message.obj; 6308 boolean enable = (message.arg1 == 1); 6309 mWifiNative.startTdls(remoteAddress, enable); 6310 } 6311 break; 6312 case WifiMonitor.ANQP_DONE_EVENT: 6313 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6314 break; 6315 case CMD_STOP_IP_PACKET_OFFLOAD: { 6316 int slot = message.arg1; 6317 int ret = stopWifiIPPacketOffload(slot); 6318 if (mNetworkAgent != null) { 6319 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6320 } 6321 break; 6322 } 6323 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6324 mWifiConfigStore.notifyIconReceived((IconEvent)message.obj); 6325 break; 6326 case WifiMonitor.HS20_REMEDIATION_EVENT: 6327 mWifiConfigStore.wnmFrameReceived((String)message.obj); 6328 break; 6329 case WifiMonitor.HS20_DEAUTH_EVENT: 6330 mWifiConfigStore.wnmFrameReceived((String)message.obj); 6331 break; 6332 default: 6333 return NOT_HANDLED; 6334 } 6335 return HANDLED; 6336 } 6337 @Override 6338 public void exit() { 6339 6340 mWifiLogger.stopLogging(); 6341 6342 mIsRunning = false; 6343 updateBatteryWorkSource(null); 6344 mScanResults = new ArrayList<>(); 6345 6346 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6347 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6348 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6349 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6350 noteScanEnd(); // wrap up any pending request. 6351 mBufferedScanMsg.clear(); 6352 } 6353 } 6354 6355 class WaitForP2pDisableState extends State { 6356 private State mTransitionToState; 6357 @Override 6358 public void enter() { 6359 switch (getCurrentMessage().what) { 6360 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6361 mTransitionToState = mInitialState; 6362 break; 6363 case CMD_STOP_DRIVER: 6364 mTransitionToState = mDriverStoppingState; 6365 break; 6366 case CMD_STOP_SUPPLICANT: 6367 mTransitionToState = mSupplicantStoppingState; 6368 break; 6369 default: 6370 mTransitionToState = mDriverStoppingState; 6371 break; 6372 } 6373 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6374 } 6375 @Override 6376 public boolean processMessage(Message message) { 6377 logStateAndMessage(message, this); 6378 6379 switch(message.what) { 6380 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6381 transitionTo(mTransitionToState); 6382 break; 6383 /* Defer wifi start/shut and driver commands */ 6384 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6385 case CMD_START_SUPPLICANT: 6386 case CMD_STOP_SUPPLICANT: 6387 case CMD_START_AP: 6388 case CMD_STOP_AP: 6389 case CMD_START_DRIVER: 6390 case CMD_STOP_DRIVER: 6391 case CMD_SET_OPERATIONAL_MODE: 6392 case CMD_SET_COUNTRY_CODE: 6393 case CMD_SET_FREQUENCY_BAND: 6394 case CMD_START_PACKET_FILTERING: 6395 case CMD_STOP_PACKET_FILTERING: 6396 case CMD_START_SCAN: 6397 case CMD_DISCONNECT: 6398 case CMD_REASSOCIATE: 6399 case CMD_RECONNECT: 6400 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6401 deferMessage(message); 6402 break; 6403 default: 6404 return NOT_HANDLED; 6405 } 6406 return HANDLED; 6407 } 6408 } 6409 6410 class DriverStoppingState extends State { 6411 @Override 6412 public boolean processMessage(Message message) { 6413 logStateAndMessage(message, this); 6414 6415 switch(message.what) { 6416 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6417 SupplicantState state = handleSupplicantStateChange(message); 6418 if (state == SupplicantState.INTERFACE_DISABLED) { 6419 transitionTo(mDriverStoppedState); 6420 } 6421 break; 6422 /* Queue driver commands */ 6423 case CMD_START_DRIVER: 6424 case CMD_STOP_DRIVER: 6425 case CMD_SET_COUNTRY_CODE: 6426 case CMD_SET_FREQUENCY_BAND: 6427 case CMD_START_PACKET_FILTERING: 6428 case CMD_STOP_PACKET_FILTERING: 6429 case CMD_START_SCAN: 6430 case CMD_DISCONNECT: 6431 case CMD_REASSOCIATE: 6432 case CMD_RECONNECT: 6433 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6434 deferMessage(message); 6435 break; 6436 default: 6437 return NOT_HANDLED; 6438 } 6439 return HANDLED; 6440 } 6441 } 6442 6443 class DriverStoppedState extends State { 6444 @Override 6445 public boolean processMessage(Message message) { 6446 logStateAndMessage(message, this); 6447 switch (message.what) { 6448 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6449 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6450 SupplicantState state = stateChangeResult.state; 6451 // A WEXT bug means that we can be back to driver started state 6452 // unexpectedly 6453 if (SupplicantState.isDriverActive(state)) { 6454 transitionTo(mDriverStartedState); 6455 } 6456 break; 6457 case CMD_START_DRIVER: 6458 mWakeLock.acquire(); 6459 mWifiNative.startDriver(); 6460 mWakeLock.release(); 6461 transitionTo(mDriverStartingState); 6462 break; 6463 default: 6464 return NOT_HANDLED; 6465 } 6466 return HANDLED; 6467 } 6468 } 6469 6470 class ScanModeState extends State { 6471 private int mLastOperationMode; 6472 @Override 6473 public void enter() { 6474 mLastOperationMode = mOperationalMode; 6475 } 6476 @Override 6477 public boolean processMessage(Message message) { 6478 logStateAndMessage(message, this); 6479 6480 switch(message.what) { 6481 case CMD_SET_OPERATIONAL_MODE: 6482 if (message.arg1 == CONNECT_MODE) { 6483 6484 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6485 setWifiState(WIFI_STATE_ENABLED); 6486 // Load and re-enable networks when going back to enabled state 6487 // This is essential for networks to show up after restore 6488 mWifiConfigStore.loadAndEnableAllNetworks(); 6489 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6490 } else { 6491 mWifiConfigStore.enableAllNetworks(); 6492 } 6493 // start a scan to trigger Quality network selection 6494 startScan(ENABLE_WIFI, 0, null, null); 6495 6496 // Loose last selection choice since user toggled WiFi 6497 mWifiConfigStore. 6498 setAndEnableLastSelectedConfiguration( 6499 WifiConfiguration.INVALID_NETWORK_ID); 6500 6501 mOperationalMode = CONNECT_MODE; 6502 transitionTo(mDisconnectedState); 6503 } else { 6504 // Nothing to do 6505 return HANDLED; 6506 } 6507 break; 6508 // Handle scan. All the connection related commands are 6509 // handled only in ConnectModeState 6510 case CMD_START_SCAN: 6511 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6512 break; 6513 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6514 SupplicantState state = handleSupplicantStateChange(message); 6515 if(DBG) log("SupplicantState= " + state); 6516 break; 6517 default: 6518 return NOT_HANDLED; 6519 } 6520 return HANDLED; 6521 } 6522 } 6523 6524 6525 String smToString(Message message) { 6526 return smToString(message.what); 6527 } 6528 6529 String smToString(int what) { 6530 String s = "unknown"; 6531 switch (what) { 6532 case WifiMonitor.DRIVER_HUNG_EVENT: 6533 s = "DRIVER_HUNG_EVENT"; 6534 break; 6535 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6536 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6537 break; 6538 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6539 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6540 break; 6541 case CMD_SET_FREQUENCY_BAND: 6542 s = "CMD_SET_FREQUENCY_BAND"; 6543 break; 6544 case CMD_DELAYED_NETWORK_DISCONNECT: 6545 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6546 break; 6547 case CMD_TEST_NETWORK_DISCONNECT: 6548 s = "CMD_TEST_NETWORK_DISCONNECT"; 6549 break; 6550 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6551 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6552 break; 6553 case CMD_DISABLE_EPHEMERAL_NETWORK: 6554 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6555 break; 6556 case CMD_START_DRIVER: 6557 s = "CMD_START_DRIVER"; 6558 break; 6559 case CMD_STOP_DRIVER: 6560 s = "CMD_STOP_DRIVER"; 6561 break; 6562 case CMD_STOP_SUPPLICANT: 6563 s = "CMD_STOP_SUPPLICANT"; 6564 break; 6565 case CMD_STOP_SUPPLICANT_FAILED: 6566 s = "CMD_STOP_SUPPLICANT_FAILED"; 6567 break; 6568 case CMD_START_SUPPLICANT: 6569 s = "CMD_START_SUPPLICANT"; 6570 break; 6571 case CMD_REQUEST_AP_CONFIG: 6572 s = "CMD_REQUEST_AP_CONFIG"; 6573 break; 6574 case CMD_RESPONSE_AP_CONFIG: 6575 s = "CMD_RESPONSE_AP_CONFIG"; 6576 break; 6577 case CMD_TETHER_STATE_CHANGE: 6578 s = "CMD_TETHER_STATE_CHANGE"; 6579 break; 6580 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6581 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6582 break; 6583 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6584 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6585 break; 6586 case CMD_ADD_OR_UPDATE_NETWORK: 6587 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6588 break; 6589 case CMD_REMOVE_NETWORK: 6590 s = "CMD_REMOVE_NETWORK"; 6591 break; 6592 case CMD_ENABLE_NETWORK: 6593 s = "CMD_ENABLE_NETWORK"; 6594 break; 6595 case CMD_ENABLE_ALL_NETWORKS: 6596 s = "CMD_ENABLE_ALL_NETWORKS"; 6597 break; 6598 case CMD_AUTO_CONNECT: 6599 s = "CMD_AUTO_CONNECT"; 6600 break; 6601 case CMD_AUTO_ROAM: 6602 s = "CMD_AUTO_ROAM"; 6603 break; 6604 case CMD_AUTO_SAVE_NETWORK: 6605 s = "CMD_AUTO_SAVE_NETWORK"; 6606 break; 6607 case CMD_BOOT_COMPLETED: 6608 s = "CMD_BOOT_COMPLETED"; 6609 break; 6610 case DhcpStateMachine.CMD_START_DHCP: 6611 s = "CMD_START_DHCP"; 6612 break; 6613 case DhcpStateMachine.CMD_STOP_DHCP: 6614 s = "CMD_STOP_DHCP"; 6615 break; 6616 case DhcpStateMachine.CMD_RENEW_DHCP: 6617 s = "CMD_RENEW_DHCP"; 6618 break; 6619 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6620 s = "CMD_PRE_DHCP_ACTION"; 6621 break; 6622 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6623 s = "CMD_POST_DHCP_ACTION"; 6624 break; 6625 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6626 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6627 break; 6628 case DhcpStateMachine.CMD_ON_QUIT: 6629 s = "CMD_ON_QUIT"; 6630 break; 6631 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6632 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6633 break; 6634 case WifiManager.DISABLE_NETWORK: 6635 s = "WifiManager.DISABLE_NETWORK"; 6636 break; 6637 case CMD_BLACKLIST_NETWORK: 6638 s = "CMD_BLACKLIST_NETWORK"; 6639 break; 6640 case CMD_CLEAR_BLACKLIST: 6641 s = "CMD_CLEAR_BLACKLIST"; 6642 break; 6643 case CMD_SAVE_CONFIG: 6644 s = "CMD_SAVE_CONFIG"; 6645 break; 6646 case CMD_GET_CONFIGURED_NETWORKS: 6647 s = "CMD_GET_CONFIGURED_NETWORKS"; 6648 break; 6649 case CMD_GET_SUPPORTED_FEATURES: 6650 s = "CMD_GET_SUPPORTED_FEATURES"; 6651 break; 6652 case CMD_UNWANTED_NETWORK: 6653 s = "CMD_UNWANTED_NETWORK"; 6654 break; 6655 case CMD_NETWORK_STATUS: 6656 s = "CMD_NETWORK_STATUS"; 6657 break; 6658 case CMD_GET_LINK_LAYER_STATS: 6659 s = "CMD_GET_LINK_LAYER_STATS"; 6660 break; 6661 case CMD_GET_MATCHING_CONFIG: 6662 s = "CMD_GET_MATCHING_CONFIG"; 6663 break; 6664 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6665 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6666 break; 6667 case CMD_DISCONNECT: 6668 s = "CMD_DISCONNECT"; 6669 break; 6670 case CMD_RECONNECT: 6671 s = "CMD_RECONNECT"; 6672 break; 6673 case CMD_REASSOCIATE: 6674 s = "CMD_REASSOCIATE"; 6675 break; 6676 case CMD_GET_CONNECTION_STATISTICS: 6677 s = "CMD_GET_CONNECTION_STATISTICS"; 6678 break; 6679 case CMD_SET_HIGH_PERF_MODE: 6680 s = "CMD_SET_HIGH_PERF_MODE"; 6681 break; 6682 case CMD_SET_COUNTRY_CODE: 6683 s = "CMD_SET_COUNTRY_CODE"; 6684 break; 6685 case CMD_ENABLE_RSSI_POLL: 6686 s = "CMD_ENABLE_RSSI_POLL"; 6687 break; 6688 case CMD_RSSI_POLL: 6689 s = "CMD_RSSI_POLL"; 6690 break; 6691 case CMD_START_PACKET_FILTERING: 6692 s = "CMD_START_PACKET_FILTERING"; 6693 break; 6694 case CMD_STOP_PACKET_FILTERING: 6695 s = "CMD_STOP_PACKET_FILTERING"; 6696 break; 6697 case CMD_SET_SUSPEND_OPT_ENABLED: 6698 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6699 break; 6700 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6701 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6702 break; 6703 case CMD_UPDATE_LINKPROPERTIES: 6704 s = "CMD_UPDATE_LINKPROPERTIES"; 6705 break; 6706 case CMD_RELOAD_TLS_AND_RECONNECT: 6707 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6708 break; 6709 case WifiManager.CONNECT_NETWORK: 6710 s = "CONNECT_NETWORK"; 6711 break; 6712 case WifiManager.SAVE_NETWORK: 6713 s = "SAVE_NETWORK"; 6714 break; 6715 case WifiManager.FORGET_NETWORK: 6716 s = "FORGET_NETWORK"; 6717 break; 6718 case WifiMonitor.SUP_CONNECTION_EVENT: 6719 s = "SUP_CONNECTION_EVENT"; 6720 break; 6721 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6722 s = "SUP_DISCONNECTION_EVENT"; 6723 break; 6724 case WifiMonitor.SCAN_RESULTS_EVENT: 6725 s = "SCAN_RESULTS_EVENT"; 6726 break; 6727 case WifiMonitor.SCAN_FAILED_EVENT: 6728 s = "SCAN_FAILED_EVENT"; 6729 break; 6730 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6731 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6732 break; 6733 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6734 s = "AUTHENTICATION_FAILURE_EVENT"; 6735 break; 6736 case WifiMonitor.SSID_TEMP_DISABLED: 6737 s = "SSID_TEMP_DISABLED"; 6738 break; 6739 case WifiMonitor.SSID_REENABLED: 6740 s = "SSID_REENABLED"; 6741 break; 6742 case WifiMonitor.WPS_SUCCESS_EVENT: 6743 s = "WPS_SUCCESS_EVENT"; 6744 break; 6745 case WifiMonitor.WPS_FAIL_EVENT: 6746 s = "WPS_FAIL_EVENT"; 6747 break; 6748 case WifiMonitor.SUP_REQUEST_IDENTITY: 6749 s = "SUP_REQUEST_IDENTITY"; 6750 break; 6751 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6752 s = "NETWORK_CONNECTION_EVENT"; 6753 break; 6754 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6755 s = "NETWORK_DISCONNECTION_EVENT"; 6756 break; 6757 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6758 s = "ASSOCIATION_REJECTION_EVENT"; 6759 break; 6760 case WifiMonitor.ANQP_DONE_EVENT: 6761 s = "WifiMonitor.ANQP_DONE_EVENT"; 6762 break; 6763 case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: 6764 s = "WifiMonitor.RX_HS20_ANQP_ICON_EVENT"; 6765 break; 6766 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6767 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6768 break; 6769 case WifiMonitor.HS20_DEAUTH_EVENT: 6770 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6771 break; 6772 case WifiMonitor.HS20_REMEDIATION_EVENT: 6773 s = "WifiMonitor.HS20_REMEDIATION_EVENT"; 6774 break; 6775 case WifiMonitor.GAS_QUERY_START_EVENT: 6776 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6777 break; 6778 case CMD_SET_OPERATIONAL_MODE: 6779 s = "CMD_SET_OPERATIONAL_MODE"; 6780 break; 6781 case CMD_START_SCAN: 6782 s = "CMD_START_SCAN"; 6783 break; 6784 case CMD_DISABLE_P2P_RSP: 6785 s = "CMD_DISABLE_P2P_RSP"; 6786 break; 6787 case CMD_DISABLE_P2P_REQ: 6788 s = "CMD_DISABLE_P2P_REQ"; 6789 break; 6790 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6791 s = "GOOD_LINK_DETECTED"; 6792 break; 6793 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6794 s = "POOR_LINK_DETECTED"; 6795 break; 6796 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6797 s = "GROUP_CREATING_TIMED_OUT"; 6798 break; 6799 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6800 s = "P2P_CONNECTION_CHANGED"; 6801 break; 6802 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6803 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6804 break; 6805 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6806 s = "P2P.SET_MIRACAST_MODE"; 6807 break; 6808 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6809 s = "P2P.BLOCK_DISCOVERY"; 6810 break; 6811 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6812 s = "P2P.SET_COUNTRY_CODE"; 6813 break; 6814 case WifiManager.CANCEL_WPS: 6815 s = "CANCEL_WPS"; 6816 break; 6817 case WifiManager.CANCEL_WPS_FAILED: 6818 s = "CANCEL_WPS_FAILED"; 6819 break; 6820 case WifiManager.CANCEL_WPS_SUCCEDED: 6821 s = "CANCEL_WPS_SUCCEDED"; 6822 break; 6823 case WifiManager.START_WPS: 6824 s = "START_WPS"; 6825 break; 6826 case WifiManager.START_WPS_SUCCEEDED: 6827 s = "START_WPS_SUCCEEDED"; 6828 break; 6829 case WifiManager.WPS_FAILED: 6830 s = "WPS_FAILED"; 6831 break; 6832 case WifiManager.WPS_COMPLETED: 6833 s = "WPS_COMPLETED"; 6834 break; 6835 case WifiManager.RSSI_PKTCNT_FETCH: 6836 s = "RSSI_PKTCNT_FETCH"; 6837 break; 6838 case CMD_IP_CONFIGURATION_LOST: 6839 s = "CMD_IP_CONFIGURATION_LOST"; 6840 break; 6841 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6842 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6843 break; 6844 case CMD_IP_REACHABILITY_LOST: 6845 s = "CMD_IP_REACHABILITY_LOST"; 6846 break; 6847 case CMD_STATIC_IP_SUCCESS: 6848 s = "CMD_STATIC_IP_SUCCESSFUL"; 6849 break; 6850 case CMD_STATIC_IP_FAILURE: 6851 s = "CMD_STATIC_IP_FAILURE"; 6852 break; 6853 case DhcpStateMachine.DHCP_SUCCESS: 6854 s = "DHCP_SUCCESS"; 6855 break; 6856 case DhcpStateMachine.DHCP_FAILURE: 6857 s = "DHCP_FAILURE"; 6858 break; 6859 case CMD_TARGET_BSSID: 6860 s = "CMD_TARGET_BSSID"; 6861 break; 6862 case CMD_ASSOCIATED_BSSID: 6863 s = "CMD_ASSOCIATED_BSSID"; 6864 break; 6865 case CMD_REMOVE_APP_CONFIGURATIONS: 6866 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6867 break; 6868 case CMD_REMOVE_USER_CONFIGURATIONS: 6869 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6870 break; 6871 case CMD_ROAM_WATCHDOG_TIMER: 6872 s = "CMD_ROAM_WATCHDOG_TIMER"; 6873 break; 6874 case CMD_SCREEN_STATE_CHANGED: 6875 s = "CMD_SCREEN_STATE_CHANGED"; 6876 break; 6877 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6878 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6879 break; 6880 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6881 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6882 break; 6883 case CMD_STARTED_PNO_DBG: 6884 s = "CMD_STARTED_PNO_DBG"; 6885 break; 6886 case CMD_STARTED_GSCAN_DBG: 6887 s = "CMD_STARTED_GSCAN_DBG"; 6888 break; 6889 case CMD_PNO_NETWORK_FOUND: 6890 s = "CMD_PNO_NETWORK_FOUND"; 6891 break; 6892 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6893 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6894 break; 6895 case CMD_START_IP_PACKET_OFFLOAD: 6896 s = "CMD_START_IP_PACKET_OFFLOAD"; 6897 break; 6898 case CMD_STOP_IP_PACKET_OFFLOAD: 6899 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 6900 break; 6901 case CMD_START_RSSI_MONITORING_OFFLOAD: 6902 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 6903 break; 6904 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 6905 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 6906 break; 6907 case CMD_RSSI_THRESHOLD_BREACH: 6908 s = "CMD_RSSI_THRESHOLD_BREACH"; 6909 break; 6910 default: 6911 s = "what:" + Integer.toString(what); 6912 break; 6913 } 6914 return s; 6915 } 6916 6917 void registerConnected() { 6918 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6919 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6920 if (config != null) { 6921 //Here we will clear all disable counters once a network is connected 6922 //records how long this network is connected in future 6923 config.lastConnected = System.currentTimeMillis(); 6924 config.getNetworkSelectionStatus().clearDisableReasonCounter(); 6925 } 6926 mBadLinkspeedcount = 0; 6927 } 6928 } 6929 6930 void registerDisconnected() { 6931 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6932 long now_ms = System.currentTimeMillis(); 6933 // We are switching away from this configuration, 6934 // hence record the time we were connected last 6935 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6936 if (config != null) { 6937 config.lastDisconnected = System.currentTimeMillis(); 6938 if (config.ephemeral) { 6939 // Remove ephemeral WifiConfigurations from file 6940 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6941 } 6942 } 6943 } 6944 } 6945 6946 void noteWifiDisabledWhileAssociated() { 6947 // We got disabled by user while we were associated, make note of it 6948 int rssi = mWifiInfo.getRssi(); 6949 WifiConfiguration config = getCurrentWifiConfiguration(); 6950 if (getCurrentState() == mConnectedState 6951 && rssi != WifiInfo.INVALID_RSSI 6952 && config != null) { 6953 boolean is24GHz = mWifiInfo.is24GHz(); 6954 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi24.get()) 6955 || (!is24GHz && rssi < mWifiConfigStore.thresholdMinimumRssi5.get()); 6956 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdQualifiedRssi24.get()) 6957 || (!is24GHz && mWifiInfo.getRssi() 6958 < mWifiConfigStore.thresholdQualifiedRssi5.get()); 6959 boolean isHighRSSI = (is24GHz && rssi 6960 >= mWifiConfigStore.thresholdSaturatedRssi24.get()) 6961 || (!is24GHz && mWifiInfo.getRssi() 6962 >= mWifiConfigStore.thresholdSaturatedRssi5.get()); 6963 if (isBadRSSI) { 6964 // Take note that we got disabled while RSSI was Bad 6965 config.numUserTriggeredWifiDisableLowRSSI++; 6966 } else if (isLowRSSI) { 6967 // Take note that we got disabled while RSSI was Low 6968 config.numUserTriggeredWifiDisableBadRSSI++; 6969 } else if (!isHighRSSI) { 6970 // Take note that we got disabled while RSSI was Not high 6971 config.numUserTriggeredWifiDisableNotHighRSSI++; 6972 } 6973 } 6974 } 6975 6976 WifiConfiguration getCurrentWifiConfiguration() { 6977 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6978 return null; 6979 } 6980 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6981 } 6982 6983 ScanResult getCurrentScanResult() { 6984 WifiConfiguration config = getCurrentWifiConfiguration(); 6985 if (config == null) { 6986 return null; 6987 } 6988 String BSSID = mWifiInfo.getBSSID(); 6989 if (BSSID == null) { 6990 BSSID = mTargetRoamBSSID; 6991 } 6992 ScanDetailCache scanDetailCache = 6993 mWifiConfigStore.getScanDetailCache(config); 6994 6995 if (scanDetailCache == null) { 6996 return null; 6997 } 6998 6999 return scanDetailCache.get(BSSID); 7000 } 7001 7002 String getCurrentBSSID() { 7003 if (linkDebouncing) { 7004 return null; 7005 } 7006 return mLastBssid; 7007 } 7008 7009 class ConnectModeState extends State { 7010 7011 @Override 7012 public void enter() { 7013 connectScanningService(); 7014 } 7015 7016 @Override 7017 public boolean processMessage(Message message) { 7018 WifiConfiguration config; 7019 int netId; 7020 boolean ok; 7021 boolean didDisconnect; 7022 String bssid; 7023 String ssid; 7024 NetworkUpdateResult result; 7025 logStateAndMessage(message, this); 7026 7027 switch (message.what) { 7028 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7029 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 7030 didBlackListBSSID = false; 7031 bssid = (String) message.obj; 7032 if (bssid == null || TextUtils.isEmpty(bssid)) { 7033 // If BSSID is null, use the target roam BSSID 7034 bssid = mTargetRoamBSSID; 7035 } 7036 if (bssid != null) { 7037 // If we have a BSSID, tell configStore to black list it 7038 synchronized(mScanResultCache) { 7039 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 7040 (mLastNetworkId, bssid, false); 7041 } 7042 } 7043 7044 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 7045 WifiConfiguration.NetworkSelectionStatus 7046 .DISABLED_ASSOCIATION_REJECTION); 7047 7048 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 7049 break; 7050 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7051 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 7052 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 7053 if (mTargetNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7054 mWifiConfigStore.updateNetworkSelectionStatus(mTargetNetworkId, 7055 WifiConfiguration.NetworkSelectionStatus 7056 .DISABLED_AUTHENTICATION_FAILURE); 7057 } 7058 break; 7059 case WifiMonitor.SSID_TEMP_DISABLED: 7060 Log.e(TAG, "Supplicant SSID temporary disabled:" 7061 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 7062 mWifiConfigStore.updateNetworkSelectionStatus( 7063 message.arg1, 7064 WifiConfiguration.NetworkSelectionStatus 7065 .DISABLED_AUTHENTICATION_FAILURE); 7066 break; 7067 case WifiMonitor.SSID_REENABLED: 7068 Log.d(TAG, "Supplicant SSID reenable:" 7069 + mWifiConfigStore.getWifiConfiguration(message.arg1)); 7070 // Do not re-enable it in Quality Network Selection since framework has its own 7071 // Algorithm of disable/enable 7072 break; 7073 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7074 SupplicantState state = handleSupplicantStateChange(message); 7075 // A driver/firmware hang can now put the interface in a down state. 7076 // We detect the interface going down and recover from it 7077 if (!SupplicantState.isDriverActive(state)) { 7078 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7079 handleNetworkDisconnect(); 7080 } 7081 log("Detected an interface down, restart driver"); 7082 transitionTo(mDriverStoppedState); 7083 sendMessage(CMD_START_DRIVER); 7084 break; 7085 } 7086 7087 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7088 // when authentication times out after a successful connection, 7089 // we can figure this from the supplicant state. If supplicant 7090 // state is DISCONNECTED, but the mNetworkInfo says we are not 7091 // disconnected, we need to handle a disconnection 7092 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7093 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7094 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7095 handleNetworkDisconnect(); 7096 transitionTo(mDisconnectedState); 7097 } 7098 7099 // If we have COMPLETED a connection to a BSSID, start doing 7100 // DNAv4/DNAv6 -style probing for on-link neighbors of 7101 // interest (e.g. routers); harmless if none are configured. 7102 if (state == SupplicantState.COMPLETED) { 7103 if (mIpReachabilityMonitor != null) { 7104 mIpReachabilityMonitor.probeAll(); 7105 } 7106 } 7107 break; 7108 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7109 if (message.arg1 == 1) { 7110 mWifiNative.disconnect(); 7111 mTemporarilyDisconnectWifi = true; 7112 } else { 7113 mWifiNative.reconnect(); 7114 mTemporarilyDisconnectWifi = false; 7115 } 7116 break; 7117 case CMD_ADD_OR_UPDATE_NETWORK: 7118 config = (WifiConfiguration) message.obj; 7119 7120 if (!recordUidIfAuthorized(config, message.sendingUid, 7121 /* onlyAnnotate */ false)) { 7122 logw("Not authorized to update network " 7123 + " config=" + config.SSID 7124 + " cnid=" + config.networkId 7125 + " uid=" + message.sendingUid); 7126 replyToMessage(message, message.what, FAILURE); 7127 break; 7128 } 7129 7130 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7131 if (res < 0) { 7132 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7133 } else { 7134 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7135 if (curConfig != null && config != null) { 7136 if (curConfig.priority < config.priority 7137 && config.status == WifiConfiguration.Status.ENABLED) { 7138 // Interpret this as a connect attempt 7139 // Set the last selected configuration so as to allow the system to 7140 // stick the last user choice without persisting the choice 7141 mWifiConfigStore.setAndEnableLastSelectedConfiguration(res); 7142 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7143 mWifiConfigStore.writeKnownNetworkHistory(false); 7144 7145 // Remember time of last connection attempt 7146 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7147 7148 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7149 7150 // As a courtesy to the caller, trigger a scan now 7151 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7152 } 7153 } 7154 } 7155 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7156 break; 7157 case CMD_REMOVE_NETWORK: 7158 netId = message.arg1; 7159 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7160 /* onlyAnnotate */ false)) { 7161 logw("Not authorized to remove network " 7162 + " cnid=" + netId 7163 + " uid=" + message.sendingUid); 7164 replyToMessage(message, message.what, FAILURE); 7165 break; 7166 } 7167 7168 ok = mWifiConfigStore.removeNetwork(message.arg1); 7169 if (!ok) { 7170 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7171 } 7172 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7173 break; 7174 case CMD_ENABLE_NETWORK: 7175 boolean disableOthers = message.arg2 == 1; 7176 netId = message.arg1; 7177 config = mWifiConfigStore.getWifiConfiguration(netId); 7178 if (config == null) { 7179 loge("No network with id = " + netId); 7180 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7181 replyToMessage(message, message.what, FAILURE); 7182 break; 7183 } 7184 7185 // disable other only means select this network, does not mean all other 7186 // networks need to be disabled 7187 if (disableOthers) { 7188 mWifiQualifiedNetworkSelector.enableNetworkByUser(config); 7189 // Remember time of last connection attempt 7190 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7191 } 7192 // Cancel auto roam requests 7193 mTargetNetworkId = netId; 7194 autoRoamSetBSSID(netId, "any"); 7195 7196 int uid = message.sendingUid; 7197 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7198 if (!ok) { 7199 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7200 } 7201 7202 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7203 break; 7204 case CMD_ENABLE_ALL_NETWORKS: 7205 long time = android.os.SystemClock.elapsedRealtime(); 7206 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7207 mWifiConfigStore.enableAllNetworks(); 7208 mLastEnableAllNetworksTime = time; 7209 } 7210 break; 7211 case WifiManager.DISABLE_NETWORK: 7212 if (mWifiConfigStore.updateNetworkSelectionStatus(message.arg1, 7213 WifiConfiguration.NetworkSelectionStatus.DISABLED_BY_WIFI_MANAGER)) { 7214 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7215 } else { 7216 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7217 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7218 WifiManager.ERROR); 7219 } 7220 break; 7221 case CMD_DISABLE_EPHEMERAL_NETWORK: 7222 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7223 if (config != null) { 7224 if (config.networkId == mLastNetworkId) { 7225 // Disconnect and let autojoin reselect a new network 7226 sendMessage(CMD_DISCONNECT); 7227 } 7228 } 7229 break; 7230 case CMD_BLACKLIST_NETWORK: 7231 mWifiConfigStore.blackListBssid((String) message.obj); 7232 break; 7233 case CMD_CLEAR_BLACKLIST: 7234 mWifiConfigStore.clearBssidBlacklist(); 7235 break; 7236 case CMD_SAVE_CONFIG: 7237 ok = mWifiConfigStore.saveConfig(); 7238 7239 if (DBG) logd("did save config " + ok); 7240 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7241 7242 // Inform the backup manager about a data change 7243 IBackupManager ibm = IBackupManager.Stub.asInterface( 7244 mFacade.getService(Context.BACKUP_SERVICE)); 7245 if (ibm != null) { 7246 try { 7247 ibm.dataChanged("com.android.providers.settings"); 7248 } catch (Exception e) { 7249 // Try again later 7250 } 7251 } 7252 break; 7253 case CMD_GET_CONFIGURED_NETWORKS: 7254 replyToMessage(message, message.what, 7255 mWifiConfigStore.getConfiguredNetworks()); 7256 break; 7257 case WifiMonitor.SUP_REQUEST_IDENTITY: 7258 int networkId = message.arg2; 7259 boolean identitySent = false; 7260 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7261 7262 if (targetWificonfiguration != null 7263 && targetWificonfiguration.enterpriseConfig != null) { 7264 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7265 } 7266 7267 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7268 if (targetWificonfiguration != null 7269 && targetWificonfiguration.networkId == networkId 7270 && targetWificonfiguration.allowedKeyManagement 7271 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7272 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7273 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7274 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7275 TelephonyManager tm = (TelephonyManager) 7276 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7277 if (tm != null) { 7278 String imsi = tm.getSubscriberId(); 7279 String mccMnc = ""; 7280 7281 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7282 mccMnc = tm.getSimOperator(); 7283 7284 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7285 7286 if (!identity.isEmpty()) { 7287 mWifiNative.simIdentityResponse(networkId, identity); 7288 identitySent = true; 7289 } 7290 } 7291 } 7292 if (!identitySent) { 7293 // Supplicant lacks credentials to connect to that network, hence black list 7294 ssid = (String) message.obj; 7295 if (targetWificonfiguration != null && ssid != null 7296 && targetWificonfiguration.SSID != null 7297 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7298 mWifiConfigStore.updateNetworkSelectionStatus(targetWificonfiguration, 7299 WifiConfiguration.NetworkSelectionStatus 7300 .DISABLED_AUTHENTICATION_NO_CREDENTIALS); 7301 } 7302 // Disconnect now, as we don't have any way to fullfill 7303 // the supplicant request. 7304 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 7305 WifiConfiguration.INVALID_NETWORK_ID); 7306 mWifiNative.disconnect(); 7307 } 7308 break; 7309 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7310 logd("Received SUP_REQUEST_SIM_AUTH"); 7311 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7312 if (requestData != null) { 7313 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7314 handleGsmAuthRequest(requestData); 7315 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7316 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7317 handle3GAuthRequest(requestData); 7318 } 7319 } else { 7320 loge("Invalid sim auth request"); 7321 } 7322 break; 7323 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7324 replyToMessage(message, message.what, 7325 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7326 break; 7327 case CMD_GET_MATCHING_CONFIG: 7328 replyToMessage(message, message.what, 7329 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7330 break; 7331 /* Do a redundant disconnect without transition */ 7332 case CMD_DISCONNECT: 7333 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7334 (WifiConfiguration.INVALID_NETWORK_ID); 7335 mWifiNative.disconnect(); 7336 break; 7337 case CMD_RECONNECT: 7338 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false); 7339 break; 7340 case CMD_REASSOCIATE: 7341 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7342 mWifiNative.reassociate(); 7343 break; 7344 case CMD_RELOAD_TLS_AND_RECONNECT: 7345 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7346 logd("Reconnecting to give a chance to un-connected TLS networks"); 7347 mWifiNative.disconnect(); 7348 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7349 mWifiNative.reconnect(); 7350 } 7351 break; 7352 case CMD_AUTO_ROAM: 7353 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7354 return HANDLED; 7355 case CMD_AUTO_CONNECT: 7356 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7357 * associated status to the STATUS command but somehow-someplace still thinks 7358 * it is associated and thus will ignore select/reconnect command with 7359 * following message: 7360 * "Already associated with the selected network - do nothing" 7361 * 7362 * Hence, sends a disconnect to supplicant first. 7363 */ 7364 didDisconnect = false; 7365 if (getCurrentState() != mDisconnectedState) { 7366 /** Supplicant will ignore the reconnect if we are currently associated, 7367 * hence trigger a disconnect 7368 */ 7369 didDisconnect = true; 7370 mWifiNative.disconnect(); 7371 } 7372 7373 /* connect command coming from auto-join */ 7374 netId = message.arg1; 7375 mTargetNetworkId = netId; 7376 mTargetRoamBSSID = (String) message.obj; 7377 config = mWifiConfigStore.getWifiConfiguration(netId); 7378 logd("CMD_AUTO_CONNECT sup state " 7379 + mSupplicantStateTracker.getSupplicantStateName() 7380 + " my state " + getCurrentState().getName() 7381 + " nid=" + Integer.toString(netId) 7382 + " roam=" + Boolean.toString(mAutoRoaming)); 7383 if (config == null) { 7384 loge("AUTO_CONNECT and no config, bail out..."); 7385 break; 7386 } 7387 7388 /* Make sure we cancel any previous roam request */ 7389 setTargetBssid(config, mTargetRoamBSSID); 7390 7391 /* Save the network config */ 7392 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7393 + " nid=" + Integer.toString(netId)); 7394 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7395 netId = result.getNetworkId(); 7396 logd("CMD_AUTO_CONNECT did save config -> " 7397 + " nid=" + Integer.toString(netId)); 7398 7399 // Since we updated the config,read it back from config store: 7400 config = mWifiConfigStore.getWifiConfiguration(netId); 7401 if (config == null) { 7402 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7403 break; 7404 } 7405 if (netId != config.networkId) { 7406 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7407 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7408 break; 7409 } 7410 7411 if (deferForUserInput(message, netId, false)) { 7412 break; 7413 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7414 WifiConfiguration.USER_BANNED) { 7415 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7416 WifiManager.NOT_AUTHORIZED); 7417 break; 7418 } 7419 7420 // Make sure the network is enabled, since supplicant will not reenable it 7421 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7422 7423 // If we're autojoining a network that the user or an app explicitly selected, 7424 // keep track of the UID that selected it. 7425 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7426 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7427 7428 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7429 lastConnectUid) && mWifiNative.reconnect()) { 7430 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7431 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7432 config = mWifiConfigStore.getWifiConfiguration(netId); 7433 if (config != null 7434 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7435 // If we autojoined a different config than the user selected one, 7436 // it means we could not see the last user selection, 7437 // or that the last user selection was faulty and ended up blacklisted 7438 // for some reason (in which case the user is notified with an error 7439 // message in the Wifi picker), and thus we managed to auto-join away 7440 // from the selected config. -> in that case we need to forget 7441 // the selection because we don't want to abruptly switch back to it. 7442 // 7443 // Note that the user selection is also forgotten after a period of time 7444 // during which the device has been disconnected. 7445 // The default value is 30 minutes : see the code path at bottom of 7446 // setScanResults() function. 7447 mWifiConfigStore. 7448 setAndEnableLastSelectedConfiguration( 7449 WifiConfiguration.INVALID_NETWORK_ID); 7450 } 7451 mAutoRoaming = false; 7452 if (isRoaming() || linkDebouncing) { 7453 transitionTo(mRoamingState); 7454 } else if (didDisconnect) { 7455 transitionTo(mDisconnectingState); 7456 } else { 7457 /* Already in disconnected state, nothing to change */ 7458 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7459 int delay = 60 * 1000; 7460 if (VDBG) { 7461 logd("Starting PNO alarm: " + delay); 7462 } 7463 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7464 System.currentTimeMillis() + delay, 7465 mPnoIntent); 7466 } 7467 mRestartAutoJoinOffloadCounter++; 7468 } 7469 } else { 7470 loge("Failed to connect config: " + config + " netId: " + netId); 7471 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7472 WifiManager.ERROR); 7473 break; 7474 } 7475 break; 7476 case CMD_REMOVE_APP_CONFIGURATIONS: 7477 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7478 break; 7479 case CMD_REMOVE_USER_CONFIGURATIONS: 7480 mWifiConfigStore.removeNetworksForUser(message.arg1); 7481 break; 7482 case WifiManager.CONNECT_NETWORK: 7483 /** 7484 * The connect message can contain a network id passed as arg1 on message or 7485 * or a config passed as obj on message. 7486 * For a new network, a config is passed to create and connect. 7487 * For an existing network, a network id is passed 7488 */ 7489 netId = message.arg1; 7490 config = (WifiConfiguration) message.obj; 7491 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7492 boolean updatedExisting = false; 7493 7494 /* Save the network config */ 7495 if (config != null) { 7496 // When connecting to an access point, WifiStateMachine wants to update the 7497 // relevant config with administrative data. This update should not be 7498 // considered a 'real' update, therefore lockdown by Device Owner must be 7499 // disregarded. 7500 if (!recordUidIfAuthorized(config, message.sendingUid, 7501 /* onlyAnnotate */ true)) { 7502 logw("Not authorized to update network " 7503 + " config=" + config.SSID 7504 + " cnid=" + config.networkId 7505 + " uid=" + message.sendingUid); 7506 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7507 WifiManager.NOT_AUTHORIZED); 7508 break; 7509 } 7510 7511 String configKey = config.configKey(true /* allowCached */); 7512 WifiConfiguration savedConfig = 7513 mWifiConfigStore.getWifiConfiguration(configKey); 7514 if (savedConfig != null) { 7515 // There is an existing config with this netId, but it wasn't exposed 7516 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7517 // getConfiguredNetworks). Remove those bits and update the config. 7518 config = savedConfig; 7519 logd("CONNECT_NETWORK updating existing config with id=" + 7520 config.networkId + " configKey=" + configKey); 7521 config.ephemeral = false; 7522 mWifiConfigStore.updateNetworkSelectionStatus(config, 7523 WifiConfiguration.NetworkSelectionStatus 7524 .NETWORK_SELECTION_ENABLE); 7525 updatedExisting = true; 7526 } 7527 7528 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7529 netId = result.getNetworkId(); 7530 } 7531 config = mWifiConfigStore.getWifiConfiguration(netId); 7532 7533 if (config == null) { 7534 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7535 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7536 + getCurrentState().getName()); 7537 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7538 WifiManager.ERROR); 7539 break; 7540 } 7541 mTargetNetworkId = netId; 7542 autoRoamSetBSSID(netId, "any"); 7543 7544 if (message.sendingUid == Process.WIFI_UID 7545 || message.sendingUid == Process.SYSTEM_UID) { 7546 // As a sanity measure, clear the BSSID in the supplicant network block. 7547 // If system or Wifi Settings want to connect, they will not 7548 // specify the BSSID. 7549 // If an app however had added a BSSID to this configuration, and the BSSID 7550 // was wrong, Then we would forever fail to connect until that BSSID 7551 // is cleaned up. 7552 clearConfigBSSID(config, "CONNECT_NETWORK"); 7553 } 7554 7555 if (deferForUserInput(message, netId, true)) { 7556 break; 7557 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7558 WifiConfiguration.USER_BANNED) { 7559 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7560 WifiManager.NOT_AUTHORIZED); 7561 break; 7562 } 7563 7564 mAutoRoaming = false; 7565 7566 /* Tell network selection the user did try to connect to that network if from 7567 settings */ 7568 boolean persist = 7569 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7570 mWifiConfigStore.updateNetworkSelectionStatus(config, 7571 WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE); 7572 7573 mWifiConfigStore.setAndEnableLastSelectedConfiguration(netId); 7574 7575 didDisconnect = false; 7576 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7577 && mLastNetworkId != netId) { 7578 /** Supplicant will ignore the reconnect if we are currently associated, 7579 * hence trigger a disconnect 7580 */ 7581 didDisconnect = true; 7582 mWifiNative.disconnect(); 7583 } 7584 7585 // Make sure the network is enabled, since supplicant will not reenable it 7586 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7587 7588 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7589 message.sendingUid) && mWifiNative.reconnect()) { 7590 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7591 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7592 7593 /* The state tracker handles enabling networks upon completion/failure */ 7594 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7595 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7596 if (didDisconnect) { 7597 /* Expect a disconnection from the old connection */ 7598 transitionTo(mDisconnectingState); 7599 } else if (updatedExisting && getCurrentState() == mConnectedState && 7600 getCurrentWifiConfiguration().networkId == netId) { 7601 // Update the current set of network capabilities, but stay in the 7602 // current state. 7603 updateCapabilities(config); 7604 } else { 7605 /** 7606 * Directly go to disconnected state where we 7607 * process the connection events from supplicant 7608 **/ 7609 transitionTo(mDisconnectedState); 7610 } 7611 } else { 7612 loge("Failed to connect config: " + config + " netId: " + netId); 7613 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7614 WifiManager.ERROR); 7615 break; 7616 } 7617 break; 7618 case WifiManager.SAVE_NETWORK: 7619 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7620 // Fall thru 7621 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7622 lastSavedConfigurationAttempt = null; // Used for debug 7623 config = (WifiConfiguration) message.obj; 7624 if (config == null) { 7625 loge("ERROR: SAVE_NETWORK with null configuration" 7626 + mSupplicantStateTracker.getSupplicantStateName() 7627 + " my state " + getCurrentState().getName()); 7628 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7629 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7630 WifiManager.ERROR); 7631 break; 7632 } 7633 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7634 int nid = config.networkId; 7635 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7636 + " config=" + config.SSID 7637 + " nid=" + config.networkId 7638 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7639 + " my state " + getCurrentState().getName()); 7640 7641 // Only record the uid if this is user initiated 7642 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7643 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7644 /* onlyAnnotate */ false)) { 7645 logw("Not authorized to update network " 7646 + " config=" + config.SSID 7647 + " cnid=" + config.networkId 7648 + " uid=" + message.sendingUid); 7649 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7650 WifiManager.NOT_AUTHORIZED); 7651 break; 7652 } 7653 7654 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7655 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7656 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7657 if (result.hasIpChanged()) { 7658 // The currently connection configuration was changed 7659 // We switched from DHCP to static or from static to DHCP, or the 7660 // static IP address has changed. 7661 log("Reconfiguring IP on connection"); 7662 // TODO: clear addresses and disable IPv6 7663 // to simplify obtainingIpState. 7664 transitionTo(mObtainingIpState); 7665 } 7666 if (result.hasProxyChanged()) { 7667 log("Reconfiguring proxy on connection"); 7668 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7669 } 7670 } 7671 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7672 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7673 7674 if (VDBG) { 7675 logd("Success save network nid=" 7676 + Integer.toString(result.getNetworkId())); 7677 } 7678 7679 synchronized(mScanResultCache) { 7680 /** 7681 * If the command comes from WifiManager, then 7682 * tell autojoin the user did try to modify and save that network, 7683 * and interpret the SAVE_NETWORK as a request to connect 7684 */ 7685 boolean user = message.what == WifiManager.SAVE_NETWORK; 7686 7687 // Did this connect come from settings 7688 boolean persistConnect = 7689 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7690 7691 if (user) { 7692 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7693 mWifiConfigStore.writeKnownNetworkHistory(false); 7694 } 7695 //Fixme, CMD_AUTO_SAVE_NETWORK can be cleaned 7696 mWifiConfigStore.userSelectNetwork( 7697 result.getNetworkId(), persistConnect); 7698 mWifiQualifiedNetworkSelector.selectQualifiedNetwork(false); 7699 } 7700 } else { 7701 loge("Failed to save network"); 7702 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7703 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7704 WifiManager.ERROR); 7705 } 7706 break; 7707 case WifiManager.FORGET_NETWORK: 7708 // Debug only, remember last configuration that was forgotten 7709 WifiConfiguration toRemove 7710 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7711 if (toRemove == null) { 7712 lastForgetConfigurationAttempt = null; 7713 } else { 7714 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7715 } 7716 // check that the caller owns this network 7717 netId = message.arg1; 7718 7719 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7720 /* onlyAnnotate */ false)) { 7721 logw("Not authorized to forget network " 7722 + " cnid=" + netId 7723 + " uid=" + message.sendingUid); 7724 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7725 WifiManager.NOT_AUTHORIZED); 7726 break; 7727 } 7728 7729 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7730 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7731 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7732 (WifiConfiguration) message.obj); 7733 } else { 7734 loge("Failed to forget network"); 7735 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7736 WifiManager.ERROR); 7737 } 7738 break; 7739 case WifiManager.START_WPS: 7740 WpsInfo wpsInfo = (WpsInfo) message.obj; 7741 WpsResult wpsResult; 7742 switch (wpsInfo.setup) { 7743 case WpsInfo.PBC: 7744 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7745 break; 7746 case WpsInfo.KEYPAD: 7747 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7748 break; 7749 case WpsInfo.DISPLAY: 7750 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7751 break; 7752 default: 7753 wpsResult = new WpsResult(Status.FAILURE); 7754 loge("Invalid setup for WPS"); 7755 break; 7756 } 7757 mWifiConfigStore.setAndEnableLastSelectedConfiguration 7758 (WifiConfiguration.INVALID_NETWORK_ID); 7759 if (wpsResult.status == Status.SUCCESS) { 7760 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7761 transitionTo(mWpsRunningState); 7762 } else { 7763 loge("Failed to start WPS with config " + wpsInfo.toString()); 7764 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7765 } 7766 break; 7767 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7768 if (DBG) log("Network connection established"); 7769 mLastNetworkId = message.arg1; 7770 mLastBssid = (String) message.obj; 7771 7772 mWifiInfo.setBSSID(mLastBssid); 7773 mWifiInfo.setNetworkId(mLastNetworkId); 7774 7775 sendNetworkStateChangeBroadcast(mLastBssid); 7776 transitionTo(mObtainingIpState); 7777 break; 7778 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7779 // Calling handleNetworkDisconnect here is redundant because we might already 7780 // have called it when leaving L2ConnectedState to go to disconnecting state 7781 // or thru other path 7782 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7783 // if they are valid, and only in this case call handleNEtworkDisconnect, 7784 // TODO: this should be fixed for a L MR release 7785 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7786 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7787 // at the chip etc... 7788 if (DBG) log("ConnectModeState: Network connection lost "); 7789 handleNetworkDisconnect(); 7790 transitionTo(mDisconnectedState); 7791 break; 7792 case CMD_PNO_NETWORK_FOUND: 7793 processPnoNetworkFound((ScanResult[])message.obj); 7794 break; 7795 default: 7796 return NOT_HANDLED; 7797 } 7798 return HANDLED; 7799 } 7800 } 7801 7802 private void updateCapabilities(WifiConfiguration config) { 7803 NetworkCapabilities networkCapabilities = new NetworkCapabilities(mDfltNetworkCapabilities); 7804 if (config != null) { 7805 if (config.ephemeral) { 7806 networkCapabilities.removeCapability( 7807 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7808 } else { 7809 networkCapabilities.addCapability( 7810 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7811 } 7812 networkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7813 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7814 if (mWifiConfigStore.isOSUNetwork(config)) { 7815 Log.d(TAG, "Removing internet cap from " + config.SSID); 7816 //networkCapabilities.removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 7817 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL); 7818 } 7819 } 7820 mNetworkAgent.sendNetworkCapabilities(networkCapabilities); 7821 } 7822 7823 private class WifiNetworkAgent extends NetworkAgent { 7824 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7825 NetworkCapabilities nc, LinkProperties lp, int score) { 7826 super(l, c, TAG, ni, nc, lp, score); 7827 } 7828 protected void unwanted() { 7829 // Ignore if we're not the current networkAgent. 7830 if (this != mNetworkAgent) return; 7831 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7832 + Integer.toString(mWifiInfo.score)); 7833 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7834 } 7835 7836 @Override 7837 protected void networkStatus(int status) { 7838 if (this != mNetworkAgent) return; 7839 if (status == NetworkAgent.INVALID_NETWORK) { 7840 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7841 + Integer.toString(mWifiInfo.score)); 7842 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7843 } else if (status == NetworkAgent.VALID_NETWORK) { 7844 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7845 + Integer.toString(mWifiInfo.score)); 7846 doNetworkStatus(status); 7847 } 7848 } 7849 7850 @Override 7851 protected void saveAcceptUnvalidated(boolean accept) { 7852 if (this != mNetworkAgent) return; 7853 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7854 } 7855 7856 @Override 7857 protected void startPacketKeepalive(Message msg) { 7858 WifiStateMachine.this.sendMessage( 7859 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7860 } 7861 7862 @Override 7863 protected void stopPacketKeepalive(Message msg) { 7864 WifiStateMachine.this.sendMessage( 7865 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7866 } 7867 7868 @Override 7869 protected void setSignalStrengthThresholds(int[] thresholds) { 7870 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 7871 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 7872 // MAX_VALUE at the start/end of the thresholds array if necessary. 7873 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 7874 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 7875 // re-arm the hardware event. This needs to be done on the state machine thread to 7876 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 7877 // sent in the NetworkCapabilities) must be the one received from the hardware event 7878 // received, or we might skip callbacks. 7879 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 7880 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 7881 if (thresholds.length == 0) { 7882 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7883 mWifiInfo.getRssi()); 7884 return; 7885 } 7886 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 7887 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 7888 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 7889 Arrays.sort(rssiVals); 7890 byte[] rssiRange = new byte[rssiVals.length]; 7891 for (int i = 0; i < rssiVals.length; i++) { 7892 int val = rssiVals[i]; 7893 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 7894 rssiRange[i] = (byte) val; 7895 } else { 7896 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 7897 + Arrays.toString(rssiVals)); 7898 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 7899 mWifiInfo.getRssi()); 7900 return; 7901 } 7902 } 7903 // TODO: Do we quash rssi values in this sorted array which are very close? 7904 mRssiRanges = rssiRange; 7905 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 7906 mWifiInfo.getRssi()); 7907 } 7908 7909 @Override 7910 protected void preventAutomaticReconnect() { 7911 if (this != mNetworkAgent) return; 7912 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 7913 } 7914 } 7915 7916 void unwantedNetwork(int reason) { 7917 sendMessage(CMD_UNWANTED_NETWORK, reason); 7918 } 7919 7920 void doNetworkStatus(int status) { 7921 sendMessage(CMD_NETWORK_STATUS, status); 7922 } 7923 7924 // rfc4186 & rfc4187: 7925 // create Permanent Identity base on IMSI, 7926 // identity = usernam@realm 7927 // with username = prefix | IMSI 7928 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7929 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7930 String mcc; 7931 String mnc; 7932 String prefix; 7933 7934 if (imsi == null || imsi.isEmpty()) 7935 return ""; 7936 7937 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7938 prefix = "1"; 7939 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7940 prefix = "0"; 7941 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7942 prefix = "6"; 7943 else // not a valide EapMethod 7944 return ""; 7945 7946 /* extract mcc & mnc from mccMnc */ 7947 if (mccMnc != null && !mccMnc.isEmpty()) { 7948 mcc = mccMnc.substring(0, 3); 7949 mnc = mccMnc.substring(3); 7950 if (mnc.length() == 2) 7951 mnc = "0" + mnc; 7952 } else { 7953 // extract mcc & mnc from IMSI, assume mnc size is 3 7954 mcc = imsi.substring(0, 3); 7955 mnc = imsi.substring(3, 6); 7956 } 7957 7958 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7959 } 7960 7961 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7962 if (config == null) 7963 return false; 7964 7965 // We are still seeing a fairly high power consumption triggered by autojoin scans 7966 // Hence do partial scans only for PSK configuration that are roamable since the 7967 // primary purpose of the partial scans is roaming. 7968 // Full badn scans with exponential backoff for the purpose or extended roaming and 7969 // network switching are performed unconditionally. 7970 ScanDetailCache scanDetailCache = 7971 mWifiConfigStore.getScanDetailCache(config); 7972 if (scanDetailCache == null 7973 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7974 || scanDetailCache.size() > 6) { 7975 //return true but to not trigger the scan 7976 return true; 7977 } 7978 HashSet<Integer> freqs = mWifiConfigStore.makeChannelList(config, 7979 ONE_HOUR_MILLI, restrictChannelList); 7980 if (freqs != null && freqs.size() != 0) { 7981 //if (DBG) { 7982 logd("starting scan for " + config.configKey() + " with " + freqs); 7983 //} 7984 // Call wifi native to start the scan 7985 if (startScanNative( 7986 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, freqs)) { 7987 // Only count battery consumption if scan request is accepted 7988 noteScanStart(SCAN_ALARM_SOURCE, null); 7989 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7990 } else { 7991 // used for debug only, mark scan as failed 7992 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7993 } 7994 return true; 7995 } else { 7996 if (DBG) logd("no channels for " + config.configKey()); 7997 return false; 7998 } 7999 } 8000 8001 void clearCurrentConfigBSSID(String dbg) { 8002 // Clear the bssid in the current config's network block 8003 WifiConfiguration config = getCurrentWifiConfiguration(); 8004 if (config == null) 8005 return; 8006 clearConfigBSSID(config, dbg); 8007 } 8008 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8009 if (config == null) 8010 return; 8011 if (DBG) { 8012 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8013 + " config.bssid " + config.BSSID); 8014 } 8015 config.getNetworkSelectionStatus().setNetworkSelectionBSSID("any"); 8016 config.BSSID = "any"; 8017 if (DBG) { 8018 logd(dbg + " " + config.SSID 8019 + " nid=" + Integer.toString(config.networkId)); 8020 } 8021 mWifiConfigStore.saveWifiConfigBSSID(config); 8022 } 8023 8024 class L2ConnectedState extends State { 8025 @Override 8026 public void enter() { 8027 mRssiPollToken++; 8028 if (mEnableRssiPolling) { 8029 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8030 } 8031 if (mNetworkAgent != null) { 8032 loge("Have NetworkAgent when entering L2Connected"); 8033 setNetworkDetailedState(DetailedState.DISCONNECTED); 8034 } 8035 setNetworkDetailedState(DetailedState.CONNECTING); 8036 8037 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8038 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8039 } 8040 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8041 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8042 mLinkProperties, 60); 8043 8044 // We must clear the config BSSID, as the wifi chipset may decide to roam 8045 // from this point on and having the BSSID specified in the network block would 8046 // cause the roam to faile and the device to disconnect 8047 clearCurrentConfigBSSID("L2ConnectedState"); 8048 8049 try { 8050 mIpReachabilityMonitor = mFacade.makeIpReachabilityMonitor( 8051 mContext, 8052 mInterfaceName, 8053 new IpReachabilityMonitor.Callback() { 8054 @Override 8055 public void notifyLost(InetAddress ip, String logMsg) { 8056 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 8057 } 8058 }); 8059 } catch (IllegalArgumentException e) { 8060 Log.wtf("Failed to create IpReachabilityMonitor", e); 8061 } 8062 } 8063 8064 @Override 8065 public void exit() { 8066 if (mIpReachabilityMonitor != null) { 8067 mIpReachabilityMonitor.stop(); 8068 mIpReachabilityMonitor = null; 8069 } 8070 8071 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8072 // Bug: 15347363 8073 // For paranoia's sake, call handleNetworkDisconnect 8074 // only if BSSID is null or last networkId 8075 // is not invalid. 8076 if (DBG) { 8077 StringBuilder sb = new StringBuilder(); 8078 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8079 if (mLastBssid !=null) { 8080 sb.append(" ").append(mLastBssid); 8081 } 8082 } 8083 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8084 handleNetworkDisconnect(); 8085 } 8086 } 8087 8088 @Override 8089 public boolean processMessage(Message message) { 8090 logStateAndMessage(message, this); 8091 8092 switch (message.what) { 8093 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8094 handlePreDhcpSetup(); 8095 break; 8096 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8097 handlePostDhcpSetup(); 8098 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 8099 if (DBG) log("DHCP successful"); 8100 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 8101 // We advance to mConnectedState because handleIPv4Success will call 8102 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 8103 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 8104 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 8105 if (DBG) { 8106 int count = -1; 8107 WifiConfiguration config = getCurrentWifiConfiguration(); 8108 if (config != null) { 8109 count = config.getNetworkSelectionStatus().getDisableReasonCounter( 8110 WifiConfiguration.NetworkSelectionStatus 8111 .DISABLED_DHCP_FAILURE); 8112 } 8113 log("DHCP failure count=" + count); 8114 } 8115 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 8116 // As above, we transition to mDisconnectingState via updateLinkProperties. 8117 } 8118 break; 8119 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8120 handleSuccessfulIpConfiguration(); 8121 sendConnectedState(); 8122 transitionTo(mConnectedState); 8123 break; 8124 case CMD_IP_CONFIGURATION_LOST: 8125 // Get Link layer stats so that we get fresh tx packet counters. 8126 getWifiLinkLayerStats(true); 8127 handleIpConfigurationLost(); 8128 transitionTo(mDisconnectingState); 8129 break; 8130 case CMD_IP_REACHABILITY_LOST: 8131 if (DBG && message.obj != null) log((String) message.obj); 8132 handleIpReachabilityLost(); 8133 transitionTo(mDisconnectingState); 8134 break; 8135 case CMD_DISCONNECT: 8136 mWifiNative.disconnect(); 8137 transitionTo(mDisconnectingState); 8138 break; 8139 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8140 if (message.arg1 == 1) { 8141 mWifiNative.disconnect(); 8142 mTemporarilyDisconnectWifi = true; 8143 transitionTo(mDisconnectingState); 8144 } 8145 break; 8146 case CMD_SET_OPERATIONAL_MODE: 8147 if (message.arg1 != CONNECT_MODE) { 8148 sendMessage(CMD_DISCONNECT); 8149 deferMessage(message); 8150 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8151 noteWifiDisabledWhileAssociated(); 8152 } 8153 } 8154 mWifiConfigStore. 8155 setAndEnableLastSelectedConfiguration( 8156 WifiConfiguration.INVALID_NETWORK_ID); 8157 break; 8158 case CMD_SET_COUNTRY_CODE: 8159 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8160 deferMessage(message); 8161 break; 8162 case CMD_START_SCAN: 8163 if (DBG) { 8164 logd("CMD_START_SCAN source " + message.arg1 8165 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8166 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8167 + " targetRoamBSSID=" + mTargetRoamBSSID 8168 + " RSSI=" + mWifiInfo.getRssi()); 8169 } 8170 if (message.arg1 == SCAN_ALARM_SOURCE) { 8171 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8172 // not be processed) and restart the scan if neede 8173 if (!getEnableAutoJoinWhenAssociated()) { 8174 return HANDLED; 8175 } 8176 boolean shouldScan = mScreenOn; 8177 8178 if (!checkAndRestartDelayedScan(message.arg2, 8179 shouldScan, 8180 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8181 null, null)) { 8182 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8183 logd("L2Connected CMD_START_SCAN source " 8184 + message.arg1 8185 + " " + message.arg2 + ", " + mDelayedScanCounter 8186 + " -> obsolete"); 8187 return HANDLED; 8188 } 8189 if (mP2pConnected.get()) { 8190 logd("L2Connected CMD_START_SCAN source " 8191 + message.arg1 8192 + " " + message.arg2 + ", " + mDelayedScanCounter 8193 + " ignore because P2P is connected"); 8194 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8195 return HANDLED; 8196 } 8197 boolean tryFullBandScan = false; 8198 boolean restrictChannelList = false; 8199 long now_ms = System.currentTimeMillis(); 8200 if (DBG) { 8201 logd("CMD_START_SCAN with age=" 8202 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8203 + " interval=" + fullBandConnectedTimeIntervalMilli 8204 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8205 } 8206 if (mWifiInfo != null) { 8207 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8208 (now_ms - lastFullBandConnectedTimeMilli) 8209 > fullBandConnectedTimeIntervalMilli) { 8210 if (DBG) { 8211 logd("CMD_START_SCAN try full band scan age=" 8212 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8213 + " interval=" + fullBandConnectedTimeIntervalMilli 8214 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8215 } 8216 tryFullBandScan = true; 8217 } 8218 8219 if (mWifiInfo.txSuccessRate > 8220 mWifiConfigStore.maxTxPacketForFullScans 8221 || mWifiInfo.rxSuccessRate > 8222 mWifiConfigStore.maxRxPacketForFullScans) { 8223 // Too much traffic at the interface, hence no full band scan 8224 if (DBG) { 8225 logd("CMD_START_SCAN " + 8226 "prevent full band scan due to pkt rate"); 8227 } 8228 tryFullBandScan = false; 8229 } 8230 8231 if (mWifiInfo.txSuccessRate > 8232 mWifiConfigStore.maxTxPacketForPartialScans 8233 || mWifiInfo.rxSuccessRate > 8234 mWifiConfigStore.maxRxPacketForPartialScans) { 8235 // Don't scan if lots of packets are being sent 8236 restrictChannelList = true; 8237 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8238 if (DBG) { 8239 logd("CMD_START_SCAN source " + message.arg1 8240 + " ...and ignore scans" 8241 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8242 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8243 } 8244 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8245 return HANDLED; 8246 } 8247 } 8248 } 8249 8250 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8251 if (DBG) { 8252 logd("CMD_START_SCAN full=" + 8253 tryFullBandScan); 8254 } 8255 if (currentConfiguration != null) { 8256 if (fullBandConnectedTimeIntervalMilli 8257 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8258 // Sanity 8259 fullBandConnectedTimeIntervalMilli 8260 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8261 } 8262 if (tryFullBandScan) { 8263 lastFullBandConnectedTimeMilli = now_ms; 8264 if (fullBandConnectedTimeIntervalMilli 8265 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8266 // Increase the interval 8267 fullBandConnectedTimeIntervalMilli 8268 = fullBandConnectedTimeIntervalMilli 8269 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8270 8271 if (DBG) { 8272 logd("CMD_START_SCAN bump interval =" 8273 + fullBandConnectedTimeIntervalMilli); 8274 } 8275 } 8276 handleScanRequest( 8277 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8278 } else { 8279 if (!startScanForConfiguration( 8280 currentConfiguration, restrictChannelList)) { 8281 if (DBG) { 8282 logd("starting scan, " + 8283 " did not find channels -> full"); 8284 } 8285 lastFullBandConnectedTimeMilli = now_ms; 8286 if (fullBandConnectedTimeIntervalMilli 8287 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8288 // Increase the interval 8289 fullBandConnectedTimeIntervalMilli 8290 = fullBandConnectedTimeIntervalMilli 8291 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8292 8293 if (DBG) { 8294 logd("CMD_START_SCAN bump interval =" 8295 + fullBandConnectedTimeIntervalMilli); 8296 } 8297 } 8298 handleScanRequest( 8299 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8300 } 8301 } 8302 8303 } else { 8304 logd("CMD_START_SCAN : connected mode and no configuration"); 8305 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8306 } 8307 } else { 8308 // Not scan alarm source 8309 return NOT_HANDLED; 8310 } 8311 break; 8312 /* Ignore connection to same network */ 8313 case WifiManager.CONNECT_NETWORK: 8314 int netId = message.arg1; 8315 if (mWifiInfo.getNetworkId() == netId) { 8316 break; 8317 } 8318 return NOT_HANDLED; 8319 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8320 mWifiInfo.setBSSID((String) message.obj); 8321 mLastNetworkId = message.arg1; 8322 mWifiInfo.setNetworkId(mLastNetworkId); 8323 if(!mLastBssid.equals((String) message.obj)) { 8324 mLastBssid = (String) message.obj; 8325 sendNetworkStateChangeBroadcast(mLastBssid); 8326 } 8327 break; 8328 case CMD_RSSI_POLL: 8329 if (message.arg1 == mRssiPollToken) { 8330 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8331 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8332 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8333 if (stats != null) { 8334 // Sanity check the results provided by driver 8335 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8336 && (stats.rssi_mgmt == 0 8337 || stats.beacon_rx == 0)) { 8338 stats = null; 8339 } 8340 } 8341 // Get Info and continue polling 8342 fetchRssiLinkSpeedAndFrequencyNative(); 8343 calculateWifiScore(stats); 8344 } 8345 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8346 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8347 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8348 } else { 8349 // Polling has completed 8350 } 8351 break; 8352 case CMD_ENABLE_RSSI_POLL: 8353 cleanWifiScore(); 8354 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8355 mEnableRssiPolling = (message.arg1 == 1); 8356 } else { 8357 mEnableRssiPolling = false; 8358 } 8359 mRssiPollToken++; 8360 if (mEnableRssiPolling) { 8361 // First poll 8362 fetchRssiLinkSpeedAndFrequencyNative(); 8363 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8364 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8365 } 8366 break; 8367 case WifiManager.RSSI_PKTCNT_FETCH: 8368 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8369 fetchRssiLinkSpeedAndFrequencyNative(); 8370 info.rssi = mWifiInfo.getRssi(); 8371 fetchPktcntNative(info); 8372 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8373 break; 8374 case CMD_DELAYED_NETWORK_DISCONNECT: 8375 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8376 8377 // Ignore if we are not debouncing 8378 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8379 + message.arg1); 8380 return HANDLED; 8381 } else { 8382 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8383 + message.arg1); 8384 8385 linkDebouncing = false; 8386 // If we are still debouncing while this message comes, 8387 // it means we were not able to reconnect within the alloted time 8388 // = LINK_FLAPPING_DEBOUNCE_MSEC 8389 // and thus, trigger a real disconnect 8390 handleNetworkDisconnect(); 8391 transitionTo(mDisconnectedState); 8392 } 8393 break; 8394 case CMD_ASSOCIATED_BSSID: 8395 if ((String) message.obj == null) { 8396 logw("Associated command w/o BSSID"); 8397 break; 8398 } 8399 mLastBssid = (String) message.obj; 8400 if (mLastBssid != null 8401 && (mWifiInfo.getBSSID() == null 8402 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8403 mWifiInfo.setBSSID((String) message.obj); 8404 sendNetworkStateChangeBroadcast(mLastBssid); 8405 } 8406 break; 8407 case CMD_START_RSSI_MONITORING_OFFLOAD: 8408 case CMD_RSSI_THRESHOLD_BREACH: 8409 byte currRssi = (byte) message.arg1; 8410 processRssiThreshold(currRssi, message.what); 8411 break; 8412 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8413 stopRssiMonitoringOffload(); 8414 break; 8415 default: 8416 return NOT_HANDLED; 8417 } 8418 8419 return HANDLED; 8420 } 8421 } 8422 8423 class ObtainingIpState extends State { 8424 @Override 8425 public void enter() { 8426 if (DBG) { 8427 String key = ""; 8428 if (getCurrentWifiConfiguration() != null) { 8429 key = getCurrentWifiConfiguration().configKey(); 8430 } 8431 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8432 + " " + key + " " 8433 + " roam=" + mAutoRoaming 8434 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8435 + " watchdog= " + obtainingIpWatchdogCount); 8436 } 8437 8438 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8439 // We might still be roaming 8440 linkDebouncing = false; 8441 8442 // Send event to CM & network change broadcast 8443 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8444 8445 // We must clear the config BSSID, as the wifi chipset may decide to roam 8446 // from this point on and having the BSSID specified in the network block would 8447 // cause the roam to faile and the device to disconnect 8448 clearCurrentConfigBSSID("ObtainingIpAddress"); 8449 8450 try { 8451 mNwService.enableIpv6(mInterfaceName); 8452 } catch (RemoteException re) { 8453 loge("Failed to enable IPv6: " + re); 8454 } catch (IllegalStateException e) { 8455 loge("Failed to enable IPv6: " + e); 8456 } 8457 8458 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8459 if (isRoaming()) { 8460 renewDhcp(); 8461 } else { 8462 // Remove any IP address on the interface in case we're switching from static 8463 // IP configuration to DHCP. This is safe because if we get here when not 8464 // roaming, we don't have a usable address. 8465 clearIPv4Address(mInterfaceName); 8466 startDhcp(); 8467 } 8468 obtainingIpWatchdogCount++; 8469 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8470 // Get Link layer stats so as we get fresh tx packet counters 8471 getWifiLinkLayerStats(true); 8472 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8473 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8474 } else { 8475 // stop any running dhcp before assigning static IP 8476 stopDhcp(); 8477 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8478 mLastNetworkId); 8479 if (config.ipAddress == null) { 8480 logd("Static IP lacks address"); 8481 sendMessage(CMD_STATIC_IP_FAILURE); 8482 } else { 8483 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8484 ifcg.setLinkAddress(config.ipAddress); 8485 ifcg.setInterfaceUp(); 8486 try { 8487 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8488 if (DBG) log("Static IP configuration succeeded"); 8489 DhcpResults dhcpResults = new DhcpResults(config); 8490 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8491 } catch (RemoteException re) { 8492 loge("Static IP configuration failed: " + re); 8493 sendMessage(CMD_STATIC_IP_FAILURE); 8494 } catch (IllegalStateException e) { 8495 loge("Static IP configuration failed: " + e); 8496 sendMessage(CMD_STATIC_IP_FAILURE); 8497 } 8498 } 8499 } 8500 } 8501 @Override 8502 public boolean processMessage(Message message) { 8503 logStateAndMessage(message, this); 8504 8505 switch(message.what) { 8506 case CMD_STATIC_IP_SUCCESS: 8507 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8508 break; 8509 case CMD_STATIC_IP_FAILURE: 8510 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8511 break; 8512 case CMD_AUTO_CONNECT: 8513 case CMD_AUTO_ROAM: 8514 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8515 break; 8516 case WifiManager.SAVE_NETWORK: 8517 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8518 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8519 deferMessage(message); 8520 break; 8521 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8522 case CMD_SET_HIGH_PERF_MODE: 8523 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8524 deferMessage(message); 8525 break; 8526 /* Defer scan request since we should not switch to other channels at DHCP */ 8527 case CMD_START_SCAN: 8528 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8529 deferMessage(message); 8530 break; 8531 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8532 if (message.arg1 == obtainingIpWatchdogCount) { 8533 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8534 + obtainingIpWatchdogCount); 8535 handleIpConfigurationLost(); 8536 transitionTo(mDisconnectingState); 8537 break; 8538 } 8539 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8540 break; 8541 default: 8542 return NOT_HANDLED; 8543 } 8544 return HANDLED; 8545 } 8546 } 8547 8548 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8549 // sets mPoorNetworkDetectionEnabled to false. 8550 class VerifyingLinkState extends State { 8551 @Override 8552 public void enter() { 8553 log(getName() + " enter"); 8554 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8555 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8556 sendNetworkStateChangeBroadcast(mLastBssid); 8557 // End roaming 8558 mAutoRoaming = false; 8559 } 8560 @Override 8561 public boolean processMessage(Message message) { 8562 logStateAndMessage(message, this); 8563 8564 switch (message.what) { 8565 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8566 // Stay here 8567 log(getName() + " POOR_LINK_DETECTED: no transition"); 8568 break; 8569 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8570 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8571 sendConnectedState(); 8572 transitionTo(mConnectedState); 8573 break; 8574 default: 8575 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8576 return NOT_HANDLED; 8577 } 8578 return HANDLED; 8579 } 8580 } 8581 8582 private void sendConnectedState() { 8583 // If this network was explicitly selected by the user, evaluate whether to call 8584 // explicitlySelected() so the system can treat it appropriately. 8585 WifiConfiguration config = getCurrentWifiConfiguration(); 8586 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8587 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8588 if (DBG) { 8589 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8590 } 8591 if (prompt) { 8592 // Selected by the user via Settings or QuickSettings. If this network has Internet 8593 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8594 // really want to switch, or has already confirmed and selected "Don't ask again". 8595 if (DBG) { 8596 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8597 } 8598 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8599 } 8600 } 8601 8602 setNetworkDetailedState(DetailedState.CONNECTED); 8603 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8604 sendNetworkStateChangeBroadcast(mLastBssid); 8605 } 8606 8607 class RoamingState extends State { 8608 boolean mAssociated; 8609 @Override 8610 public void enter() { 8611 if (DBG) { 8612 log("RoamingState Enter" 8613 + " mScreenOn=" + mScreenOn ); 8614 } 8615 setScanAlarm(false); 8616 8617 // Make sure we disconnect if roaming fails 8618 roamWatchdogCount++; 8619 logd("Start Roam Watchdog " + roamWatchdogCount); 8620 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8621 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8622 mAssociated = false; 8623 } 8624 @Override 8625 public boolean processMessage(Message message) { 8626 logStateAndMessage(message, this); 8627 WifiConfiguration config; 8628 switch (message.what) { 8629 case CMD_IP_CONFIGURATION_LOST: 8630 config = getCurrentWifiConfiguration(); 8631 if (config != null) { 8632 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8633 mWifiConfigStore.noteRoamingFailure(config, 8634 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8635 } 8636 return NOT_HANDLED; 8637 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8638 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8639 return HANDLED; 8640 case CMD_UNWANTED_NETWORK: 8641 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8642 return HANDLED; 8643 case CMD_SET_OPERATIONAL_MODE: 8644 if (message.arg1 != CONNECT_MODE) { 8645 deferMessage(message); 8646 } 8647 break; 8648 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8649 /** 8650 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8651 * before NETWORK_DISCONNECTION_EVENT 8652 * And there is an associated BSSID corresponding to our target BSSID, then 8653 * we have missed the network disconnection, transition to mDisconnectedState 8654 * and handle the rest of the events there. 8655 */ 8656 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8657 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8658 || stateChangeResult.state == SupplicantState.INACTIVE 8659 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8660 if (DBG) { 8661 log("STATE_CHANGE_EVENT in roaming state " 8662 + stateChangeResult.toString() ); 8663 } 8664 if (stateChangeResult.BSSID != null 8665 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8666 handleNetworkDisconnect(); 8667 transitionTo(mDisconnectedState); 8668 } 8669 } 8670 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8671 // We completed the layer2 roaming part 8672 mAssociated = true; 8673 if (stateChangeResult.BSSID != null) { 8674 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8675 } 8676 } 8677 break; 8678 case CMD_ROAM_WATCHDOG_TIMER: 8679 if (roamWatchdogCount == message.arg1) { 8680 if (DBG) log("roaming watchdog! -> disconnect"); 8681 mRoamFailCount++; 8682 handleNetworkDisconnect(); 8683 mWifiNative.disconnect(); 8684 transitionTo(mDisconnectedState); 8685 } 8686 break; 8687 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8688 if (mAssociated) { 8689 if (DBG) log("roaming and Network connection established"); 8690 mLastNetworkId = message.arg1; 8691 mLastBssid = (String) message.obj; 8692 mWifiInfo.setBSSID(mLastBssid); 8693 mWifiInfo.setNetworkId(mLastNetworkId); 8694 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8695 sendNetworkStateChangeBroadcast(mLastBssid); 8696 transitionTo(mObtainingIpState); 8697 } else { 8698 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8699 } 8700 break; 8701 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8702 // Throw away but only if it corresponds to the network we're roaming to 8703 String bssid = (String)message.obj; 8704 if (true) { 8705 String target = ""; 8706 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8707 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8708 + " BSSID=" + bssid 8709 + " target=" + target); 8710 } 8711 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8712 handleNetworkDisconnect(); 8713 transitionTo(mDisconnectedState); 8714 } 8715 break; 8716 case WifiMonitor.SSID_TEMP_DISABLED: 8717 // Auth error while roaming 8718 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8719 + " id=" + Integer.toString(message.arg1) 8720 + " isRoaming=" + isRoaming() 8721 + " roam=" + mAutoRoaming); 8722 if (message.arg1 == mLastNetworkId) { 8723 config = getCurrentWifiConfiguration(); 8724 if (config != null) { 8725 mWifiLogger.captureBugReportData( 8726 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8727 mWifiConfigStore.noteRoamingFailure(config, 8728 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8729 } 8730 handleNetworkDisconnect(); 8731 transitionTo(mDisconnectingState); 8732 } 8733 return NOT_HANDLED; 8734 case CMD_START_SCAN: 8735 deferMessage(message); 8736 break; 8737 default: 8738 return NOT_HANDLED; 8739 } 8740 return HANDLED; 8741 } 8742 8743 @Override 8744 public void exit() { 8745 logd("WifiStateMachine: Leaving Roaming state"); 8746 } 8747 } 8748 8749 class ConnectedState extends State { 8750 @Override 8751 public void enter() { 8752 String address; 8753 updateDefaultRouteMacAddress(1000); 8754 if (DBG) { 8755 log("Enter ConnectedState " 8756 + " mScreenOn=" + mScreenOn 8757 + " scanperiod=" 8758 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8759 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8760 + mWifiConfigStore.enableHalBasedPno.get() 8761 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8762 } 8763 if (mScreenOn 8764 && getEnableAutoJoinWhenAssociated()) { 8765 if (useHalBasedAutoJoinOffload()) { 8766 startGScanConnectedModeOffload("connectedEnter"); 8767 } else { 8768 // restart scan alarm 8769 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8770 null, null); 8771 } 8772 } 8773 registerConnected(); 8774 lastConnectAttemptTimestamp = 0; 8775 targetWificonfiguration = null; 8776 // Paranoia 8777 linkDebouncing = false; 8778 8779 // Not roaming anymore 8780 mAutoRoaming = false; 8781 8782 if (testNetworkDisconnect) { 8783 testNetworkDisconnectCounter++; 8784 logd("ConnectedState Enter start disconnect test " + 8785 testNetworkDisconnectCounter); 8786 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8787 testNetworkDisconnectCounter, 0), 15000); 8788 } 8789 8790 // Reenable all networks, allow for hidden networks to be scanned 8791 mWifiConfigStore.enableAllNetworks(); 8792 8793 mLastDriverRoamAttempt = 0; 8794 mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 8795 //startLazyRoam(); 8796 } 8797 @Override 8798 public boolean processMessage(Message message) { 8799 WifiConfiguration config = null; 8800 logStateAndMessage(message, this); 8801 8802 switch (message.what) { 8803 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8804 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8805 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8806 return HANDLED; 8807 } 8808 /* If we are still in Disconnected state after having discovered a valid 8809 * network this means autojoin didnt managed to associate to the network, 8810 * then restart PNO so as we will try associating to it again. 8811 */ 8812 if (useHalBasedAutoJoinOffload()) { 8813 if (mGScanStartTimeMilli == 0) { 8814 // If offload is not started, then start it... 8815 startGScanConnectedModeOffload("connectedRestart"); 8816 } else { 8817 // If offload is already started, then check if we need to increase 8818 // the scan period and restart the Gscan 8819 long now = System.currentTimeMillis(); 8820 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8821 && ((now - mGScanStartTimeMilli) 8822 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8823 && (mGScanPeriodMilli 8824 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8825 { 8826 startConnectedGScan("Connected restart gscan"); 8827 } 8828 } 8829 } 8830 break; 8831 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8832 updateAssociatedScanPermission(); 8833 break; 8834 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8835 if (DBG) log("Watchdog reports poor link"); 8836 transitionTo(mVerifyingLinkState); 8837 break; 8838 case CMD_UNWANTED_NETWORK: 8839 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8840 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8841 mWifiNative.disconnect(); 8842 transitionTo(mDisconnectingState); 8843 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8844 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8845 Log.d(TAG, (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN 8846 ? "NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN" 8847 : "NETWORK_STATUS_UNWANTED_VALIDATION_FAILED")); 8848 config = getCurrentWifiConfiguration(); 8849 if (config != null) { 8850 // Disable autojoin 8851 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8852 config.validatedInternetAccess = false; 8853 // Clear last-selected status, as being last-selected also avoids 8854 // disabling auto-join. 8855 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8856 mWifiConfigStore.setAndEnableLastSelectedConfiguration( 8857 WifiConfiguration.INVALID_NETWORK_ID); 8858 } 8859 mWifiConfigStore.updateNetworkSelectionStatus(config, 8860 WifiConfiguration.NetworkSelectionStatus 8861 .DISABLED_NO_INTERNET); 8862 } 8863 config.numNoInternetAccessReports += 1; 8864 mWifiConfigStore.writeKnownNetworkHistory(false); 8865 } 8866 } 8867 return HANDLED; 8868 case CMD_NETWORK_STATUS: 8869 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8870 config = getCurrentWifiConfiguration(); 8871 if (config != null) { 8872 // re-enable autojoin 8873 config.numNoInternetAccessReports = 0; 8874 config.validatedInternetAccess = true; 8875 mWifiConfigStore.writeKnownNetworkHistory(false); 8876 } 8877 } 8878 return HANDLED; 8879 case CMD_ACCEPT_UNVALIDATED: 8880 boolean accept = (message.arg1 != 0); 8881 config = getCurrentWifiConfiguration(); 8882 if (config != null) { 8883 config.noInternetAccessExpected = accept; 8884 } 8885 return HANDLED; 8886 case CMD_TEST_NETWORK_DISCONNECT: 8887 // Force a disconnect 8888 if (message.arg1 == testNetworkDisconnectCounter) { 8889 mWifiNative.disconnect(); 8890 } 8891 break; 8892 case CMD_ASSOCIATED_BSSID: 8893 // ASSOCIATING to a new BSSID while already connected, indicates 8894 // that driver is roaming 8895 mLastDriverRoamAttempt = System.currentTimeMillis(); 8896 String toBSSID = (String)message.obj; 8897 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8898 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8899 } 8900 return NOT_HANDLED; 8901 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8902 long lastRoam = 0; 8903 if (mLastDriverRoamAttempt != 0) { 8904 // Calculate time since last driver roam attempt 8905 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8906 mLastDriverRoamAttempt = 0; 8907 } 8908 if (unexpectedDisconnectedReason(message.arg2)) { 8909 mWifiLogger.captureBugReportData( 8910 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8911 } 8912 config = getCurrentWifiConfiguration(); 8913 if (mScreenOn 8914 && !linkDebouncing 8915 && config != null 8916 && config.getNetworkSelectionStatus().isNetworkEnabled() 8917 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8918 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8919 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8920 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8921 && mWifiInfo.getRssi() > 8922 WifiQualifiedNetworkSelector.QUALIFIED_RSSI_24G_BAND) 8923 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8924 && mWifiInfo.getRssi() > 8925 mWifiConfigStore.thresholdQualifiedRssi5.get()))) { 8926 // Start de-bouncing the L2 disconnection: 8927 // this L2 disconnection might be spurious. 8928 // Hence we allow 7 seconds for the state machine to try 8929 // to reconnect, go thru the 8930 // roaming cycle and enter Obtaining IP address 8931 // before signalling the disconnect to ConnectivityService and L3 8932 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8933 linkDebouncing = true; 8934 8935 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8936 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8937 if (DBG) { 8938 log("NETWORK_DISCONNECTION_EVENT in connected state" 8939 + " BSSID=" + mWifiInfo.getBSSID() 8940 + " RSSI=" + mWifiInfo.getRssi() 8941 + " freq=" + mWifiInfo.getFrequency() 8942 + " reason=" + message.arg2 8943 + " -> debounce"); 8944 } 8945 return HANDLED; 8946 } else { 8947 if (DBG) { 8948 log("NETWORK_DISCONNECTION_EVENT in connected state" 8949 + " BSSID=" + mWifiInfo.getBSSID() 8950 + " RSSI=" + mWifiInfo.getRssi() 8951 + " freq=" + mWifiInfo.getFrequency() 8952 + " was debouncing=" + linkDebouncing 8953 + " reason=" + message.arg2 8954 + " Network Selection Status=" + (config == null ? "Unavailable" 8955 : config.getNetworkSelectionStatus().getNetworkStatusString())); 8956 } 8957 } 8958 break; 8959 case CMD_AUTO_ROAM: 8960 // Clear the driver roam indication since we are attempting a framework roam 8961 mLastDriverRoamAttempt = 0; 8962 8963 /* Connect command coming from auto-join */ 8964 ScanResult candidate = (ScanResult)message.obj; 8965 String bssid = "any"; 8966 if (candidate != null) { 8967 bssid = candidate.BSSID; 8968 } 8969 int netId = mLastNetworkId; 8970 config = getCurrentWifiConfiguration(); 8971 8972 8973 if (config == null) { 8974 loge("AUTO_ROAM and no config, bail out..."); 8975 break; 8976 } 8977 8978 logd("CMD_AUTO_ROAM sup state " 8979 + mSupplicantStateTracker.getSupplicantStateName() 8980 + " my state " + getCurrentState().getName() 8981 + " nid=" + Integer.toString(netId) 8982 + " config " + config.configKey() 8983 + " roam=" + Integer.toString(message.arg2) 8984 + " to " + bssid 8985 + " targetRoamBSSID " + mTargetRoamBSSID); 8986 8987 setTargetBssid(config, bssid); 8988 mTargetNetworkId = netId; 8989 // Make sure the network is enabled, since supplicant will not re-enable it 8990 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8991 8992 if (deferForUserInput(message, netId, false)) { 8993 break; 8994 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8995 WifiConfiguration.USER_BANNED) { 8996 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8997 WifiManager.NOT_AUTHORIZED); 8998 break; 8999 } 9000 9001 boolean ret = false; 9002 if (mLastNetworkId != netId) { 9003 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 9004 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 9005 ret = true; 9006 } 9007 } else { 9008 ret = mWifiNative.reassociate(); 9009 } 9010 if (ret) { 9011 lastConnectAttemptTimestamp = System.currentTimeMillis(); 9012 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 9013 9014 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 9015 mAutoRoaming = true; 9016 transitionTo(mRoamingState); 9017 9018 } else { 9019 loge("Failed to connect config: " + config + " netId: " + netId); 9020 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9021 WifiManager.ERROR); 9022 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9023 break; 9024 } 9025 break; 9026 case CMD_START_IP_PACKET_OFFLOAD: { 9027 int slot = message.arg1; 9028 int intervalSeconds = message.arg2; 9029 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9030 byte[] dstMac; 9031 try { 9032 InetAddress gateway = RouteInfo.selectBestRoute( 9033 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9034 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9035 dstMac = macAddressFromString(dstMacStr); 9036 } catch (NullPointerException|IllegalArgumentException e) { 9037 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9038 mNetworkAgent.onPacketKeepaliveEvent(slot, 9039 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9040 break; 9041 } 9042 pkt.dstMac = dstMac; 9043 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9044 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9045 break; 9046 } 9047 default: 9048 return NOT_HANDLED; 9049 } 9050 return HANDLED; 9051 } 9052 9053 @Override 9054 public void exit() { 9055 logd("WifiStateMachine: Leaving Connected state"); 9056 setScanAlarm(false); 9057 mLastDriverRoamAttempt = 0; 9058 9059 stopLazyRoam(); 9060 9061 mWhiteListedSsids = null; 9062 } 9063 } 9064 9065 class DisconnectingState extends State { 9066 9067 @Override 9068 public void enter() { 9069 9070 if (PDBG) { 9071 logd(" Enter DisconnectingState State scan interval " 9072 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9073 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9074 + " screenOn=" + mScreenOn); 9075 } 9076 9077 // Make sure we disconnect: we enter this state prior to connecting to a new 9078 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9079 // event which in this case will be indicating that supplicant started to associate. 9080 // In some cases supplicant doesn't ignore the connect requests (it might not 9081 // find the target SSID in its cache), 9082 // Therefore we end up stuck that state, hence the need for the watchdog. 9083 disconnectingWatchdogCount++; 9084 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9085 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9086 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9087 } 9088 9089 @Override 9090 public boolean processMessage(Message message) { 9091 logStateAndMessage(message, this); 9092 switch (message.what) { 9093 case CMD_SET_OPERATIONAL_MODE: 9094 if (message.arg1 != CONNECT_MODE) { 9095 deferMessage(message); 9096 } 9097 break; 9098 case CMD_START_SCAN: 9099 deferMessage(message); 9100 return HANDLED; 9101 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9102 if (disconnectingWatchdogCount == message.arg1) { 9103 if (DBG) log("disconnecting watchdog! -> disconnect"); 9104 handleNetworkDisconnect(); 9105 transitionTo(mDisconnectedState); 9106 } 9107 break; 9108 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9109 /** 9110 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9111 * we have missed the network disconnection, transition to mDisconnectedState 9112 * and handle the rest of the events there 9113 */ 9114 deferMessage(message); 9115 handleNetworkDisconnect(); 9116 transitionTo(mDisconnectedState); 9117 break; 9118 default: 9119 return NOT_HANDLED; 9120 } 9121 return HANDLED; 9122 } 9123 } 9124 9125 class DisconnectedState extends State { 9126 @Override 9127 public void enter() { 9128 // We dont scan frequently if this is a temporary disconnect 9129 // due to p2p 9130 if (mTemporarilyDisconnectWifi) { 9131 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9132 return; 9133 } 9134 9135 if (PDBG) { 9136 logd(" Enter DisconnectedState scan interval " 9137 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9138 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9139 + " screenOn=" + mScreenOn 9140 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9141 + mWifiConfigStore.enableHalBasedPno.get()); 9142 } 9143 9144 /** clear the roaming state, if we were roaming, we failed */ 9145 mAutoRoaming = false; 9146 9147 if (useHalBasedAutoJoinOffload()) { 9148 startGScanDisconnectedModeOffload("disconnectedEnter"); 9149 } else { 9150 if (mScreenOn) { 9151 /** 9152 * screen lit and => start scan immediately 9153 */ 9154 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9155 } else { 9156 /** 9157 * screen dark and PNO supported => scan alarm disabled 9158 */ 9159 if (mBackgroundScanSupported) { 9160 /* If a regular scan result is pending, do not initiate background 9161 * scan until the scan results are returned. This is needed because 9162 * initiating a background scan will cancel the regular scan and 9163 * scan results will not be returned until background scanning is 9164 * cleared 9165 */ 9166 if (!mIsScanOngoing) { 9167 enableBackgroundScan(true); 9168 } 9169 } else { 9170 setScanAlarm(true); 9171 } 9172 } 9173 } 9174 9175 /** 9176 * If we have no networks saved, the supplicant stops doing the periodic scan. 9177 * The scans are useful to notify the user of the presence of an open network. 9178 * Note that these are not wake up scans. 9179 */ 9180 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9181 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9182 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9183 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9184 } 9185 9186 mDisconnectedTimeStamp = System.currentTimeMillis(); 9187 mDisconnectedPnoAlarmCount = 0; 9188 } 9189 @Override 9190 public boolean processMessage(Message message) { 9191 boolean ret = HANDLED; 9192 9193 logStateAndMessage(message, this); 9194 9195 switch (message.what) { 9196 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9197 if (mP2pConnected.get()) break; 9198 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9199 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9200 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9201 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9202 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9203 } 9204 break; 9205 case WifiManager.FORGET_NETWORK: 9206 case CMD_REMOVE_NETWORK: 9207 case CMD_REMOVE_APP_CONFIGURATIONS: 9208 case CMD_REMOVE_USER_CONFIGURATIONS: 9209 // Set up a delayed message here. After the forget/remove is handled 9210 // the handled delayed message will determine if there is a need to 9211 // scan and continue 9212 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9213 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9214 ret = NOT_HANDLED; 9215 break; 9216 case CMD_SET_OPERATIONAL_MODE: 9217 if (message.arg1 != CONNECT_MODE) { 9218 mOperationalMode = message.arg1; 9219 9220 mWifiConfigStore.disableAllNetworks(); 9221 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9222 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9223 setWifiState(WIFI_STATE_DISABLED); 9224 } 9225 transitionTo(mScanModeState); 9226 } 9227 mWifiConfigStore. 9228 setAndEnableLastSelectedConfiguration( 9229 WifiConfiguration.INVALID_NETWORK_ID); 9230 break; 9231 /* Ignore network disconnect */ 9232 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9233 break; 9234 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9235 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9236 if (DBG) { 9237 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9238 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9239 + " debouncing=" + linkDebouncing); 9240 } 9241 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9242 /* ConnectModeState does the rest of the handling */ 9243 ret = NOT_HANDLED; 9244 break; 9245 case CMD_START_SCAN: 9246 if (!checkOrDeferScanAllowed(message)) { 9247 // The scan request was rescheduled 9248 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9249 return HANDLED; 9250 } 9251 if (message.arg1 == SCAN_ALARM_SOURCE) { 9252 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9253 // not be processed) and restart the scan 9254 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9255 if (mP2pConnected.get()) { 9256 period = (int) mFacade.getLongSetting(mContext, 9257 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9258 period); 9259 } 9260 if (!checkAndRestartDelayedScan(message.arg2, 9261 true, period, null, null)) { 9262 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9263 logd("Disconnected CMD_START_SCAN source " 9264 + message.arg1 9265 + " " + message.arg2 + ", " + mDelayedScanCounter 9266 + " -> obsolete"); 9267 return HANDLED; 9268 } 9269 /* Disable background scan temporarily during a regular scan */ 9270 enableBackgroundScan(false); 9271 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9272 ret = HANDLED; 9273 } else { 9274 9275 /* 9276 * The SCAN request is not handled in this state and 9277 * would eventually might/will get handled in the 9278 * parent's state. The PNO, if already enabled had to 9279 * get disabled before the SCAN trigger. Hence, stop 9280 * the PNO if already enabled in this state, though the 9281 * SCAN request is not handled(PNO disable before the 9282 * SCAN trigger in any other state is not the right 9283 * place to issue). 9284 */ 9285 9286 enableBackgroundScan(false); 9287 ret = NOT_HANDLED; 9288 } 9289 break; 9290 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9291 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9292 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9293 return HANDLED; 9294 } 9295 /* If we are still in Disconnected state after having discovered a valid 9296 * network this means autojoin didnt managed to associate to the network, 9297 * then restart PNO so as we will try associating to it again. 9298 */ 9299 if (useHalBasedAutoJoinOffload()) { 9300 if (mGScanStartTimeMilli == 0) { 9301 // If offload is not started, then start it... 9302 startGScanDisconnectedModeOffload("disconnectedRestart"); 9303 } else { 9304 // If offload is already started, then check if we need to increase 9305 // the scan period and restart the Gscan 9306 long now = System.currentTimeMillis(); 9307 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9308 && ((now - mGScanStartTimeMilli) 9309 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9310 && (mGScanPeriodMilli 9311 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9312 { 9313 startDisconnectedGScan("disconnected restart gscan"); 9314 } 9315 } 9316 } else { 9317 // If we are still disconnected for a short while after having found a 9318 // network thru PNO, then something went wrong, and for some reason we 9319 // couldn't join this network. 9320 // It might be due to a SW bug in supplicant or the wifi stack, or an 9321 // interoperability issue, or we try to join a bad bss and failed 9322 // In that case we want to restart pno so as to make sure that we will 9323 // attempt again to join that network. 9324 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9325 enableBackgroundScan(false); 9326 enableBackgroundScan(true); 9327 } 9328 return HANDLED; 9329 } 9330 break; 9331 case WifiMonitor.SCAN_RESULTS_EVENT: 9332 case WifiMonitor.SCAN_FAILED_EVENT: 9333 /* Re-enable background scan when a pending scan result is received */ 9334 if (!mScreenOn && mIsScanOngoing 9335 && mBackgroundScanSupported 9336 && !useHalBasedAutoJoinOffload()) { 9337 enableBackgroundScan(true); 9338 } else if (!mScreenOn 9339 && !mIsScanOngoing 9340 && mBackgroundScanSupported 9341 && !useHalBasedAutoJoinOffload()) { 9342 // We receive scan results from legacy PNO, hence restart the PNO alarm 9343 int delay; 9344 if (mDisconnectedPnoAlarmCount < 1) { 9345 delay = 30 * 1000; 9346 } else if (mDisconnectedPnoAlarmCount < 3) { 9347 delay = 60 * 1000; 9348 } else { 9349 delay = 360 * 1000; 9350 } 9351 mDisconnectedPnoAlarmCount++; 9352 if (VDBG) { 9353 logd("Starting PNO alarm " + delay); 9354 } 9355 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9356 System.currentTimeMillis() + delay, 9357 mPnoIntent); 9358 } 9359 /* Handled in parent state */ 9360 ret = NOT_HANDLED; 9361 break; 9362 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9363 NetworkInfo info = (NetworkInfo) message.obj; 9364 mP2pConnected.set(info.isConnected()); 9365 if (mP2pConnected.get()) { 9366 int defaultInterval = mContext.getResources().getInteger( 9367 R.integer.config_wifi_scan_interval_p2p_connected); 9368 long scanIntervalMs = mFacade.getLongSetting(mContext, 9369 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9370 defaultInterval); 9371 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9372 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9373 if (DBG) log("Turn on scanning after p2p disconnected"); 9374 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9375 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9376 } else { 9377 // If P2P is not connected and there are saved networks, then restart 9378 // scanning at the normal period. This is necessary because scanning might 9379 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9380 // was set to zero. 9381 if (useHalBasedAutoJoinOffload()) { 9382 startGScanDisconnectedModeOffload("p2pRestart"); 9383 } else { 9384 startDelayedScan( 9385 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9386 null, null); 9387 } 9388 } 9389 break; 9390 case CMD_RECONNECT: 9391 case CMD_REASSOCIATE: 9392 if (mTemporarilyDisconnectWifi) { 9393 // Drop a third party reconnect/reassociate if STA is 9394 // temporarily disconnected for p2p 9395 break; 9396 } else { 9397 // ConnectModeState handles it 9398 ret = NOT_HANDLED; 9399 } 9400 break; 9401 case CMD_SCREEN_STATE_CHANGED: 9402 handleScreenStateChanged(message.arg1 != 0); 9403 break; 9404 default: 9405 ret = NOT_HANDLED; 9406 } 9407 return ret; 9408 } 9409 9410 @Override 9411 public void exit() { 9412 mDisconnectedPnoAlarmCount = 0; 9413 /* No need for a background scan upon exit from a disconnected state */ 9414 enableBackgroundScan(false); 9415 setScanAlarm(false); 9416 mAlarmManager.cancel(mPnoIntent); 9417 } 9418 } 9419 9420 class WpsRunningState extends State { 9421 // Tracks the source to provide a reply 9422 private Message mSourceMessage; 9423 @Override 9424 public void enter() { 9425 mSourceMessage = Message.obtain(getCurrentMessage()); 9426 } 9427 @Override 9428 public boolean processMessage(Message message) { 9429 logStateAndMessage(message, this); 9430 9431 switch (message.what) { 9432 case WifiMonitor.WPS_SUCCESS_EVENT: 9433 // Ignore intermediate success, wait for full connection 9434 break; 9435 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9436 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9437 mSourceMessage.recycle(); 9438 mSourceMessage = null; 9439 deferMessage(message); 9440 transitionTo(mDisconnectedState); 9441 break; 9442 case WifiMonitor.WPS_OVERLAP_EVENT: 9443 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9444 WifiManager.WPS_OVERLAP_ERROR); 9445 mSourceMessage.recycle(); 9446 mSourceMessage = null; 9447 transitionTo(mDisconnectedState); 9448 break; 9449 case WifiMonitor.WPS_FAIL_EVENT: 9450 // Arg1 has the reason for the failure 9451 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9452 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9453 mSourceMessage.recycle(); 9454 mSourceMessage = null; 9455 transitionTo(mDisconnectedState); 9456 } else { 9457 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9458 } 9459 break; 9460 case WifiMonitor.WPS_TIMEOUT_EVENT: 9461 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9462 WifiManager.WPS_TIMED_OUT); 9463 mSourceMessage.recycle(); 9464 mSourceMessage = null; 9465 transitionTo(mDisconnectedState); 9466 break; 9467 case WifiManager.START_WPS: 9468 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9469 break; 9470 case WifiManager.CANCEL_WPS: 9471 if (mWifiNative.cancelWps()) { 9472 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9473 } else { 9474 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9475 } 9476 transitionTo(mDisconnectedState); 9477 break; 9478 /** 9479 * Defer all commands that can cause connections to a different network 9480 * or put the state machine out of connect mode 9481 */ 9482 case CMD_STOP_DRIVER: 9483 case CMD_SET_OPERATIONAL_MODE: 9484 case WifiManager.CONNECT_NETWORK: 9485 case CMD_ENABLE_NETWORK: 9486 case CMD_RECONNECT: 9487 case CMD_REASSOCIATE: 9488 case CMD_ENABLE_ALL_NETWORKS: 9489 deferMessage(message); 9490 break; 9491 case CMD_AUTO_CONNECT: 9492 case CMD_AUTO_ROAM: 9493 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9494 return HANDLED; 9495 case CMD_START_SCAN: 9496 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9497 return HANDLED; 9498 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9499 if (DBG) log("Network connection lost"); 9500 handleNetworkDisconnect(); 9501 break; 9502 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9503 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9504 break; 9505 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9506 // Disregard auth failure events during WPS connection. The 9507 // EAP sequence is retried several times, and there might be 9508 // failures (especially for wps pin). We will get a WPS_XXX 9509 // event at the end of the sequence anyway. 9510 if (DBG) log("Ignore auth failure during WPS connection"); 9511 break; 9512 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9513 // Throw away supplicant state changes when WPS is running. 9514 // We will start getting supplicant state changes once we get 9515 // a WPS success or failure 9516 break; 9517 default: 9518 return NOT_HANDLED; 9519 } 9520 return HANDLED; 9521 } 9522 9523 @Override 9524 public void exit() { 9525 mWifiConfigStore.enableAllNetworks(); 9526 mWifiConfigStore.loadConfiguredNetworks(); 9527 } 9528 } 9529 9530 class SoftApStartingState extends State { 9531 @Override 9532 public void enter() { 9533 final Message message = getCurrentMessage(); 9534 if (message.what == CMD_START_AP) { 9535 final WifiConfiguration config = (WifiConfiguration) message.obj; 9536 9537 if (config == null) { 9538 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9539 } else { 9540 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9541 startSoftApWithConfig(config); 9542 } 9543 } else { 9544 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9545 } 9546 } 9547 @Override 9548 public boolean processMessage(Message message) { 9549 logStateAndMessage(message, this); 9550 9551 switch(message.what) { 9552 case CMD_START_SUPPLICANT: 9553 case CMD_STOP_SUPPLICANT: 9554 case CMD_START_AP: 9555 case CMD_STOP_AP: 9556 case CMD_START_DRIVER: 9557 case CMD_STOP_DRIVER: 9558 case CMD_SET_OPERATIONAL_MODE: 9559 case CMD_SET_COUNTRY_CODE: 9560 case CMD_SET_FREQUENCY_BAND: 9561 case CMD_START_PACKET_FILTERING: 9562 case CMD_STOP_PACKET_FILTERING: 9563 case CMD_TETHER_STATE_CHANGE: 9564 deferMessage(message); 9565 break; 9566 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9567 WifiConfiguration config = (WifiConfiguration) message.obj; 9568 if (config != null) { 9569 startSoftApWithConfig(config); 9570 } else { 9571 loge("Softap config is null!"); 9572 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9573 } 9574 break; 9575 case CMD_START_AP_SUCCESS: 9576 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9577 transitionTo(mSoftApStartedState); 9578 break; 9579 case CMD_START_AP_FAILURE: 9580 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9581 transitionTo(mInitialState); 9582 break; 9583 default: 9584 return NOT_HANDLED; 9585 } 9586 return HANDLED; 9587 } 9588 } 9589 9590 class SoftApStartedState extends State { 9591 @Override 9592 public boolean processMessage(Message message) { 9593 logStateAndMessage(message, this); 9594 9595 switch(message.what) { 9596 case CMD_STOP_AP: 9597 if (DBG) log("Stopping Soft AP"); 9598 /* We have not tethered at this point, so we just shutdown soft Ap */ 9599 try { 9600 mNwService.stopAccessPoint(mInterfaceName); 9601 } catch(Exception e) { 9602 loge("Exception in stopAccessPoint()"); 9603 } 9604 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9605 transitionTo(mInitialState); 9606 break; 9607 case CMD_START_AP: 9608 // Ignore a start on a running access point 9609 break; 9610 // Fail client mode operation when soft AP is enabled 9611 case CMD_START_SUPPLICANT: 9612 loge("Cannot start supplicant with a running soft AP"); 9613 setWifiState(WIFI_STATE_UNKNOWN); 9614 break; 9615 case CMD_TETHER_STATE_CHANGE: 9616 TetherStateChange stateChange = (TetherStateChange) message.obj; 9617 if (startTethering(stateChange.available)) { 9618 transitionTo(mTetheringState); 9619 } 9620 break; 9621 default: 9622 return NOT_HANDLED; 9623 } 9624 return HANDLED; 9625 } 9626 } 9627 9628 class TetheringState extends State { 9629 @Override 9630 public void enter() { 9631 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9632 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9633 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9634 } 9635 @Override 9636 public boolean processMessage(Message message) { 9637 logStateAndMessage(message, this); 9638 9639 switch(message.what) { 9640 case CMD_TETHER_STATE_CHANGE: 9641 TetherStateChange stateChange = (TetherStateChange) message.obj; 9642 if (isWifiTethered(stateChange.active)) { 9643 transitionTo(mTetheredState); 9644 } 9645 return HANDLED; 9646 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9647 if (message.arg1 == mTetherToken) { 9648 loge("Failed to get tether update, shutdown soft access point"); 9649 transitionTo(mSoftApStartedState); 9650 // Needs to be first thing handled 9651 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9652 } 9653 break; 9654 case CMD_START_SUPPLICANT: 9655 case CMD_STOP_SUPPLICANT: 9656 case CMD_START_AP: 9657 case CMD_STOP_AP: 9658 case CMD_START_DRIVER: 9659 case CMD_STOP_DRIVER: 9660 case CMD_SET_OPERATIONAL_MODE: 9661 case CMD_SET_COUNTRY_CODE: 9662 case CMD_SET_FREQUENCY_BAND: 9663 case CMD_START_PACKET_FILTERING: 9664 case CMD_STOP_PACKET_FILTERING: 9665 deferMessage(message); 9666 break; 9667 default: 9668 return NOT_HANDLED; 9669 } 9670 return HANDLED; 9671 } 9672 } 9673 9674 class TetheredState extends State { 9675 @Override 9676 public boolean processMessage(Message message) { 9677 logStateAndMessage(message, this); 9678 9679 switch(message.what) { 9680 case CMD_TETHER_STATE_CHANGE: 9681 TetherStateChange stateChange = (TetherStateChange) message.obj; 9682 if (!isWifiTethered(stateChange.active)) { 9683 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9684 setHostApRunning(null, false); 9685 setHostApRunning(null, true); 9686 } 9687 return HANDLED; 9688 case CMD_STOP_AP: 9689 if (DBG) log("Untethering before stopping AP"); 9690 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9691 stopTethering(); 9692 transitionTo(mUntetheringState); 9693 // More work to do after untethering 9694 deferMessage(message); 9695 break; 9696 default: 9697 return NOT_HANDLED; 9698 } 9699 return HANDLED; 9700 } 9701 } 9702 9703 class UntetheringState extends State { 9704 @Override 9705 public void enter() { 9706 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9707 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9708 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9709 9710 } 9711 @Override 9712 public boolean processMessage(Message message) { 9713 logStateAndMessage(message, this); 9714 9715 switch(message.what) { 9716 case CMD_TETHER_STATE_CHANGE: 9717 TetherStateChange stateChange = (TetherStateChange) message.obj; 9718 9719 /* Wait till wifi is untethered */ 9720 if (isWifiTethered(stateChange.active)) break; 9721 9722 transitionTo(mSoftApStartedState); 9723 break; 9724 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9725 if (message.arg1 == mTetherToken) { 9726 loge("Failed to get tether update, force stop access point"); 9727 transitionTo(mSoftApStartedState); 9728 } 9729 break; 9730 case CMD_START_SUPPLICANT: 9731 case CMD_STOP_SUPPLICANT: 9732 case CMD_START_AP: 9733 case CMD_STOP_AP: 9734 case CMD_START_DRIVER: 9735 case CMD_STOP_DRIVER: 9736 case CMD_SET_OPERATIONAL_MODE: 9737 case CMD_SET_COUNTRY_CODE: 9738 case CMD_SET_FREQUENCY_BAND: 9739 case CMD_START_PACKET_FILTERING: 9740 case CMD_STOP_PACKET_FILTERING: 9741 deferMessage(message); 9742 break; 9743 default: 9744 return NOT_HANDLED; 9745 } 9746 return HANDLED; 9747 } 9748 } 9749 9750 /** 9751 * State machine initiated requests can have replyTo set to null indicating 9752 * there are no recepients, we ignore those reply actions. 9753 */ 9754 private void replyToMessage(Message msg, int what) { 9755 if (msg.replyTo == null) return; 9756 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9757 mReplyChannel.replyToMessage(msg, dstMsg); 9758 } 9759 9760 private void replyToMessage(Message msg, int what, int arg1) { 9761 if (msg.replyTo == null) return; 9762 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9763 dstMsg.arg1 = arg1; 9764 mReplyChannel.replyToMessage(msg, dstMsg); 9765 } 9766 9767 private void replyToMessage(Message msg, int what, Object obj) { 9768 if (msg.replyTo == null) return; 9769 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9770 dstMsg.obj = obj; 9771 mReplyChannel.replyToMessage(msg, dstMsg); 9772 } 9773 9774 /** 9775 * arg2 on the source message has a unique id that needs to be retained in replies 9776 * to match the request 9777 * <p>see WifiManager for details 9778 */ 9779 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9780 Message msg = Message.obtain(); 9781 msg.what = what; 9782 msg.arg2 = srcMsg.arg2; 9783 return msg; 9784 } 9785 9786 /** 9787 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9788 * @param msg Must have a WifiConfiguration obj to succeed 9789 */ 9790 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9791 WifiConfiguration config) { 9792 if (config != null && config.preSharedKey != null) { 9793 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9794 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9795 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9796 wifiCredentialEventType); 9797 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9798 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9799 } 9800 } 9801 9802 private static int parseHex(char ch) { 9803 if ('0' <= ch && ch <= '9') { 9804 return ch - '0'; 9805 } else if ('a' <= ch && ch <= 'f') { 9806 return ch - 'a' + 10; 9807 } else if ('A' <= ch && ch <= 'F') { 9808 return ch - 'A' + 10; 9809 } else { 9810 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9811 } 9812 } 9813 9814 private byte[] parseHex(String hex) { 9815 /* This only works for good input; don't throw bad data at it */ 9816 if (hex == null) { 9817 return new byte[0]; 9818 } 9819 9820 if (hex.length() % 2 != 0) { 9821 throw new NumberFormatException(hex + " is not a valid hex string"); 9822 } 9823 9824 byte[] result = new byte[(hex.length())/2 + 1]; 9825 result[0] = (byte) ((hex.length())/2); 9826 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9827 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9828 byte b = (byte) (val & 0xFF); 9829 result[j] = b; 9830 } 9831 9832 return result; 9833 } 9834 9835 private static String makeHex(byte[] bytes) { 9836 StringBuilder sb = new StringBuilder(); 9837 for (byte b : bytes) { 9838 sb.append(String.format("%02x", b)); 9839 } 9840 return sb.toString(); 9841 } 9842 9843 private static String makeHex(byte[] bytes, int from, int len) { 9844 StringBuilder sb = new StringBuilder(); 9845 for (int i = 0; i < len; i++) { 9846 sb.append(String.format("%02x", bytes[from+i])); 9847 } 9848 return sb.toString(); 9849 } 9850 9851 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9852 9853 int len = array1.length + array2.length + array3.length; 9854 9855 if (array1.length != 0) { 9856 len++; /* add another byte for size */ 9857 } 9858 9859 if (array2.length != 0) { 9860 len++; /* add another byte for size */ 9861 } 9862 9863 if (array3.length != 0) { 9864 len++; /* add another byte for size */ 9865 } 9866 9867 byte[] result = new byte[len]; 9868 9869 int index = 0; 9870 if (array1.length != 0) { 9871 result[index] = (byte) (array1.length & 0xFF); 9872 index++; 9873 for (byte b : array1) { 9874 result[index] = b; 9875 index++; 9876 } 9877 } 9878 9879 if (array2.length != 0) { 9880 result[index] = (byte) (array2.length & 0xFF); 9881 index++; 9882 for (byte b : array2) { 9883 result[index] = b; 9884 index++; 9885 } 9886 } 9887 9888 if (array3.length != 0) { 9889 result[index] = (byte) (array3.length & 0xFF); 9890 index++; 9891 for (byte b : array3) { 9892 result[index] = b; 9893 index++; 9894 } 9895 } 9896 return result; 9897 } 9898 9899 private static byte[] concatHex(byte[] array1, byte[] array2) { 9900 9901 int len = array1.length + array2.length; 9902 9903 byte[] result = new byte[len]; 9904 9905 int index = 0; 9906 if (array1.length != 0) { 9907 for (byte b : array1) { 9908 result[index] = b; 9909 index++; 9910 } 9911 } 9912 9913 if (array2.length != 0) { 9914 for (byte b : array2) { 9915 result[index] = b; 9916 index++; 9917 } 9918 } 9919 9920 return result; 9921 } 9922 9923 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9924 if (targetWificonfiguration == null 9925 || targetWificonfiguration.networkId == requestData.networkId) { 9926 logd("id matches targetWifiConfiguration"); 9927 } else { 9928 logd("id does not match targetWifiConfiguration"); 9929 return; 9930 } 9931 9932 TelephonyManager tm = (TelephonyManager) 9933 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9934 9935 if (tm != null) { 9936 StringBuilder sb = new StringBuilder(); 9937 for (String challenge : requestData.data) { 9938 9939 if (challenge == null || challenge.isEmpty()) 9940 continue; 9941 logd("RAND = " + challenge); 9942 9943 byte[] rand = null; 9944 try { 9945 rand = parseHex(challenge); 9946 } catch (NumberFormatException e) { 9947 loge("malformed challenge"); 9948 continue; 9949 } 9950 9951 String base64Challenge = android.util.Base64.encodeToString( 9952 rand, android.util.Base64.NO_WRAP); 9953 /* 9954 * First, try with appType = 2 => USIM according to 9955 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9956 */ 9957 int appType = 2; 9958 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9959 if (tmResponse == null) { 9960 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9961 * appType = 1 => SIM 9962 */ 9963 appType = 1; 9964 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9965 } 9966 logv("Raw Response - " + tmResponse); 9967 9968 if (tmResponse != null && tmResponse.length() > 4) { 9969 byte[] result = android.util.Base64.decode(tmResponse, 9970 android.util.Base64.DEFAULT); 9971 logv("Hex Response -" + makeHex(result)); 9972 int sres_len = result[0]; 9973 String sres = makeHex(result, 1, sres_len); 9974 int kc_offset = 1+sres_len; 9975 int kc_len = result[kc_offset]; 9976 String kc = makeHex(result, 1 + kc_offset, kc_len); 9977 sb.append(":" + kc + ":" + sres); 9978 logv("kc:" + kc + " sres:" + sres); 9979 } else { 9980 loge("bad response - " + tmResponse); 9981 } 9982 } 9983 9984 String response = sb.toString(); 9985 logv("Supplicant Response -" + response); 9986 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9987 } else { 9988 loge("could not get telephony manager"); 9989 } 9990 } 9991 9992 void handle3GAuthRequest(SimAuthRequestData requestData) { 9993 StringBuilder sb = new StringBuilder(); 9994 byte[] rand = null; 9995 byte[] authn = null; 9996 String res_type = "UMTS-AUTH"; 9997 9998 if (targetWificonfiguration == null 9999 || targetWificonfiguration.networkId == requestData.networkId) { 10000 logd("id matches targetWifiConfiguration"); 10001 } else { 10002 logd("id does not match targetWifiConfiguration"); 10003 return; 10004 } 10005 if (requestData.data.length == 2) { 10006 try { 10007 rand = parseHex(requestData.data[0]); 10008 authn = parseHex(requestData.data[1]); 10009 } catch (NumberFormatException e) { 10010 loge("malformed challenge"); 10011 } 10012 } else { 10013 loge("malformed challenge"); 10014 } 10015 10016 String tmResponse = ""; 10017 if (rand != null && authn != null) { 10018 String base64Challenge = android.util.Base64.encodeToString( 10019 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10020 10021 TelephonyManager tm = (TelephonyManager) 10022 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10023 if (tm != null) { 10024 int appType = 2; // 2 => USIM 10025 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10026 logv("Raw Response - " + tmResponse); 10027 } else { 10028 loge("could not get telephony manager"); 10029 } 10030 } 10031 10032 if (tmResponse != null && tmResponse.length() > 4) { 10033 byte[] result = android.util.Base64.decode(tmResponse, 10034 android.util.Base64.DEFAULT); 10035 loge("Hex Response - " + makeHex(result)); 10036 byte tag = result[0]; 10037 if (tag == (byte) 0xdb) { 10038 logv("successful 3G authentication "); 10039 int res_len = result[1]; 10040 String res = makeHex(result, 2, res_len); 10041 int ck_len = result[res_len + 2]; 10042 String ck = makeHex(result, res_len + 3, ck_len); 10043 int ik_len = result[res_len + ck_len + 3]; 10044 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10045 sb.append(":" + ik + ":" + ck + ":" + res); 10046 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10047 } else if (tag == (byte) 0xdc) { 10048 loge("synchronisation failure"); 10049 int auts_len = result[1]; 10050 String auts = makeHex(result, 2, auts_len); 10051 res_type = "UMTS-AUTS"; 10052 sb.append(":" + auts); 10053 logv("auts:" + auts); 10054 } else { 10055 loge("bad response - unknown tag = " + tag); 10056 return; 10057 } 10058 } else { 10059 loge("bad response - " + tmResponse); 10060 return; 10061 } 10062 10063 String response = sb.toString(); 10064 logv("Supplicant Response -" + response); 10065 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10066 } 10067 10068 /** 10069 * @param reason reason code from supplicant on network disconnected event 10070 * @return true if this is a suspicious disconnect 10071 */ 10072 static boolean unexpectedDisconnectedReason(int reason) { 10073 return reason == 2 // PREV_AUTH_NOT_VALID 10074 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10075 || reason == 7 // FRAME_FROM_NONASSOC_STA 10076 || reason == 8 // STA_HAS_LEFT 10077 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10078 || reason == 14 // MICHAEL_MIC_FAILURE 10079 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10080 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10081 || reason == 18 // GROUP_CIPHER_NOT_VALID 10082 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10083 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10084 || reason == 34; // DISASSOC_LOW_ACK 10085 } 10086} 10087