WifiStateMachine.java revision 570beb51bc1daa2eb122d68f5ccac7e0ce840293
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wifi; 18 19import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 24import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 25import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 26import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 27import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 28/** 29 * TODO: 30 * Deprecate WIFI_STATE_UNKNOWN 31 */ 32import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 33 34import android.Manifest; 35import android.app.ActivityManager; 36import android.app.AlarmManager; 37import android.app.PendingIntent; 38import android.app.backup.IBackupManager; 39import android.bluetooth.BluetoothAdapter; 40import android.content.BroadcastReceiver; 41import android.content.Context; 42import android.content.Intent; 43import android.content.IntentFilter; 44import android.content.pm.ApplicationInfo; 45import android.content.pm.IPackageManager; 46import android.content.pm.PackageManager; 47import android.database.ContentObserver; 48import android.net.ConnectivityManager; 49import android.net.DhcpResults; 50import android.net.BaseDhcpStateMachine; 51import android.net.DhcpStateMachine; 52import android.net.Network; 53import android.net.dhcp.DhcpClient; 54import android.net.InterfaceConfiguration; 55import android.net.IpReachabilityMonitor; 56import android.net.LinkAddress; 57import android.net.LinkProperties; 58import android.net.NetworkAgent; 59import android.net.NetworkCapabilities; 60import android.net.NetworkFactory; 61import android.net.NetworkInfo; 62import android.net.NetworkInfo.DetailedState; 63import android.net.NetworkRequest; 64import android.net.NetworkUtils; 65import android.net.RouteInfo; 66import android.net.StaticIpConfiguration; 67import android.net.TrafficStats; 68import android.net.wifi.RssiPacketCountInfo; 69import android.net.wifi.ScanResult; 70import android.net.wifi.ScanSettings; 71import android.net.wifi.SupplicantState; 72import android.net.wifi.WifiChannel; 73import android.net.wifi.WifiConfiguration; 74import android.net.wifi.WifiConnectionStatistics; 75import android.net.wifi.WifiEnterpriseConfig; 76import android.net.wifi.WifiInfo; 77import android.net.wifi.WifiLinkLayerStats; 78import android.net.wifi.WifiManager; 79import android.net.wifi.WifiScanner; 80import android.net.wifi.WifiSsid; 81import android.net.wifi.WpsInfo; 82import android.net.wifi.WpsResult; 83import android.net.wifi.WpsResult.Status; 84import android.net.wifi.p2p.IWifiP2pManager; 85import android.os.BatteryStats; 86import android.os.Binder; 87import android.os.Bundle; 88import android.os.IBinder; 89import android.os.INetworkManagementService; 90import android.os.Looper; 91import android.os.Message; 92import android.os.Messenger; 93import android.os.PowerManager; 94import android.os.Process; 95import android.os.RemoteException; 96import android.os.ServiceManager; 97import android.os.SystemClock; 98import android.os.SystemProperties; 99import android.os.UserHandle; 100import android.os.WorkSource; 101import android.provider.Settings; 102import android.telephony.TelephonyManager; 103import android.text.TextUtils; 104import android.util.Log; 105import android.util.LruCache; 106 107import com.android.internal.R; 108import com.android.internal.app.IBatteryStats; 109import com.android.internal.util.AsyncChannel; 110import com.android.internal.util.Protocol; 111import com.android.internal.util.State; 112import com.android.internal.util.StateMachine; 113import com.android.server.connectivity.KeepalivePacketData; 114import com.android.server.net.NetlinkTracker; 115import com.android.server.wifi.hotspot2.NetworkDetail; 116import com.android.server.wifi.hotspot2.SupplicantBridge; 117import com.android.server.wifi.hotspot2.Utils; 118import com.android.server.wifi.p2p.WifiP2pServiceImpl; 119 120import java.io.BufferedReader; 121import java.io.FileDescriptor; 122import java.io.FileNotFoundException; 123import java.io.FileReader; 124import java.io.IOException; 125import java.io.PrintWriter; 126import java.net.Inet4Address; 127import java.net.InetAddress; 128import java.util.ArrayList; 129import java.util.Arrays; 130import java.util.Calendar; 131import java.util.HashSet; 132import java.util.LinkedList; 133import java.util.List; 134import java.util.Locale; 135import java.util.Queue; 136import java.util.Random; 137import java.util.concurrent.atomic.AtomicBoolean; 138import java.util.concurrent.atomic.AtomicInteger; 139import java.util.regex.Pattern; 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 WifiAutoJoinController mWifiAutoJoinController; 195 private INetworkManagementService mNwService; 196 private ConnectivityManager mCm; 197 private WifiLogger 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 NetworkCapabilities mNetworkCapabilities; 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 int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 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"; 442 443 private long mLastDriverRoamAttempt = 0; 444 445 private WifiConfiguration targetWificonfiguration = null; 446 447 // Used as debug to indicate which configuration last was saved 448 private WifiConfiguration lastSavedConfigurationAttempt = null; 449 450 // Used as debug to indicate which configuration last was removed 451 private WifiConfiguration lastForgetConfigurationAttempt = null; 452 453 //Random used by softAP channel Selection 454 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 455 456 boolean isRoaming() { 457 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 458 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 459 } 460 461 public void autoRoamSetBSSID(int netId, String bssid) { 462 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 463 } 464 465 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 466 boolean ret = true; 467 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 468 if (bssid == null) bssid = "any"; 469 if (config == null) return false; // Nothing to do 470 471 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 472 return false; // We didnt change anything 473 } 474 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 475 // Changing to ANY 476 if (!mWifiConfigStore.roamOnAny) { 477 ret = false; // Nothing to do 478 } 479 } 480 if (VDBG) { 481 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 482 } 483 config.autoJoinBSSID = bssid; 484 mTargetRoamBSSID = bssid; 485 mWifiConfigStore.saveWifiConfigBSSID(config); 486 return ret; 487 } 488 489 /** 490 * Save the UID correctly depending on if this is a new or existing network. 491 * @return true if operation is authorized, false otherwise 492 */ 493 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 494 if (!mWifiConfigStore.isNetworkConfigured(config)) { 495 config.creatorUid = uid; 496 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 497 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 498 return false; 499 } 500 501 config.lastUpdateUid = uid; 502 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 503 504 return true; 505 506 } 507 508 /** 509 * Checks to see if user has specified if the apps configuration is connectable. 510 * If the user hasn't specified we query the user and return true. 511 * 512 * @param message The message to be deferred 513 * @param netId Network id of the configuration to check against 514 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 515 * CONFIG_OVERRIDE_PERMISSION 516 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 517 */ 518 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 519 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 520 521 // We can only evaluate saved configurations. 522 if (config == null) { 523 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 524 return true; 525 } 526 527 switch (config.userApproved) { 528 case WifiConfiguration.USER_APPROVED: 529 case WifiConfiguration.USER_BANNED: 530 return false; 531 case WifiConfiguration.USER_PENDING: 532 default: // USER_UNSPECIFIED 533 /* the intention was to ask user here; but a dialog box is * 534 * too invasive; so we are going to allow connection for now */ 535 config.userApproved = WifiConfiguration.USER_APPROVED; 536 return false; 537 } 538 } 539 540 /** 541 * Subset of link properties coming from netlink. 542 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 543 * and domains obtained from router advertisements (RFC 6106). 544 */ 545 private NetlinkTracker mNetlinkTracker; 546 547 private IpReachabilityMonitor mIpReachabilityMonitor; 548 549 private AlarmManager mAlarmManager; 550 private PendingIntent mScanIntent; 551 private PendingIntent mDriverStopIntent; 552 private PendingIntent mPnoIntent; 553 554 private int mDisconnectedPnoAlarmCount = 0; 555 /* Tracks current frequency mode */ 556 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 557 558 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 559 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 560 561 // Channel for sending replies. 562 private AsyncChannel mReplyChannel = new AsyncChannel(); 563 564 private WifiP2pServiceImpl mWifiP2pServiceImpl; 565 566 // Used to initiate a connection with WifiP2pService 567 private AsyncChannel mWifiP2pChannel; 568 private AsyncChannel mWifiApConfigChannel; 569 570 private WifiScanner mWifiScanner; 571 572 private int mConnectionRequests = 0; 573 private WifiNetworkFactory mNetworkFactory; 574 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 575 private WifiNetworkAgent mNetworkAgent; 576 577 private String[] mWhiteListedSsids = null; 578 579 private byte[] mRssiRanges; 580 581 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 582 // We should really persist that into the networkHistory.txt file, and read it back when 583 // WifiStateMachine starts up 584 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 585 586 // Used to filter out requests we couldn't possibly satisfy. 587 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 588 589 /* The base for wifi message types */ 590 static final int BASE = Protocol.BASE_WIFI; 591 /* Start the supplicant */ 592 static final int CMD_START_SUPPLICANT = BASE + 11; 593 /* Stop the supplicant */ 594 static final int CMD_STOP_SUPPLICANT = BASE + 12; 595 /* Start the driver */ 596 static final int CMD_START_DRIVER = BASE + 13; 597 /* Stop the driver */ 598 static final int CMD_STOP_DRIVER = BASE + 14; 599 /* Indicates Static IP succeeded */ 600 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 601 /* Indicates Static IP failed */ 602 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 603 /* Indicates supplicant stop failed */ 604 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 605 /* Delayed stop to avoid shutting down driver too quick*/ 606 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 607 /* A delayed message sent to start driver when it fail to come up */ 608 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 609 610 /* Start the soft access point */ 611 static final int CMD_START_AP = BASE + 21; 612 /* Indicates soft ap start succeeded */ 613 static final int CMD_START_AP_SUCCESS = BASE + 22; 614 /* Indicates soft ap start failed */ 615 static final int CMD_START_AP_FAILURE = BASE + 23; 616 /* Stop the soft access point */ 617 static final int CMD_STOP_AP = BASE + 24; 618 /* Set the soft access point configuration */ 619 static final int CMD_SET_AP_CONFIG = BASE + 25; 620 /* Soft access point configuration set completed */ 621 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 622 /* Request the soft access point configuration */ 623 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 624 /* Response to access point configuration request */ 625 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 626 /* Invoked when getting a tether state change notification */ 627 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 628 /* A delayed message sent to indicate tether state change failed to arrive */ 629 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 630 631 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 632 633 /* Supplicant commands */ 634 /* Is supplicant alive ? */ 635 static final int CMD_PING_SUPPLICANT = BASE + 51; 636 /* Add/update a network configuration */ 637 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 638 /* Delete a network */ 639 static final int CMD_REMOVE_NETWORK = BASE + 53; 640 /* Enable a network. The device will attempt a connection to the given network. */ 641 static final int CMD_ENABLE_NETWORK = BASE + 54; 642 /* Enable all networks */ 643 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 644 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 645 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 646 /* Clear the blacklist network list */ 647 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 648 /* Save configuration */ 649 static final int CMD_SAVE_CONFIG = BASE + 58; 650 /* Get configured networks */ 651 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 652 /* Get available frequencies */ 653 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 654 /* Get adaptors */ 655 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 656 /* Get configured networks with real preSharedKey */ 657 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 658 /* Get Link Layer Stats thru HAL */ 659 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 660 /* Supplicant commands after driver start*/ 661 /* Initiate a scan */ 662 static final int CMD_START_SCAN = BASE + 71; 663 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 664 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 665 /* Disconnect from a network */ 666 static final int CMD_DISCONNECT = BASE + 73; 667 /* Reconnect to a network */ 668 static final int CMD_RECONNECT = BASE + 74; 669 /* Reassociate to a network */ 670 static final int CMD_REASSOCIATE = BASE + 75; 671 /* Get Connection Statistis */ 672 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 673 674 /* Controls suspend mode optimizations 675 * 676 * When high perf mode is enabled, suspend mode optimizations are disabled 677 * 678 * When high perf mode is disabled, suspend mode optimizations are enabled 679 * 680 * Suspend mode optimizations include: 681 * - packet filtering 682 * - turn off roaming 683 * - DTIM wake up settings 684 */ 685 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 686 /* Set the country code */ 687 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 688 /* Enables RSSI poll */ 689 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 690 /* RSSI poll */ 691 static final int CMD_RSSI_POLL = BASE + 83; 692 /* Set up packet filtering */ 693 static final int CMD_START_PACKET_FILTERING = BASE + 84; 694 /* Clear packet filter */ 695 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 696 /* Enable suspend mode optimizations in the driver */ 697 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 698 /* Delayed NETWORK_DISCONNECT */ 699 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 700 /* When there are no saved networks, we do a periodic scan to notify user of 701 * an open network */ 702 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 703 /* Test network Disconnection NETWORK_DISCONNECT */ 704 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 705 706 private int testNetworkDisconnectCounter = 0; 707 708 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 709 static final int MULTICAST_V6 = 1; 710 static final int MULTICAST_V4 = 0; 711 712 /* Set the frequency band */ 713 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 714 /* Enable TDLS on a specific MAC address */ 715 static final int CMD_ENABLE_TDLS = BASE + 92; 716 /* DHCP/IP configuration watchdog */ 717 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 718 719 /** 720 * Watchdog for protecting against b/16823537 721 * Leave time for 4-way handshake to succeed 722 */ 723 static final int ROAM_GUARD_TIMER_MSEC = 15000; 724 725 int roamWatchdogCount = 0; 726 /* Roam state watchdog */ 727 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 728 /* Screen change intent handling */ 729 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 730 731 /* Disconnecting state watchdog */ 732 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 733 734 /* Remove a packages associated configrations */ 735 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 736 737 /* Disable an ephemeral network */ 738 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 739 740 /* Get matching network */ 741 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 742 743 /* alert from firmware */ 744 static final int CMD_FIRMWARE_ALERT = BASE + 100; 745 746 /** 747 * Make this timer 40 seconds, which is about the normal DHCP timeout. 748 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 749 * for more than 30 seconds. 750 */ 751 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 752 753 int obtainingIpWatchdogCount = 0; 754 755 /* Commands from/to the SupplicantStateTracker */ 756 /* Reset the supplicant state tracker */ 757 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 758 759 int disconnectingWatchdogCount = 0; 760 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 761 762 /* P2p commands */ 763 /* We are ok with no response here since we wont do much with it anyway */ 764 public static final int CMD_ENABLE_P2P = BASE + 131; 765 /* In order to shut down supplicant cleanly, we wait till p2p has 766 * been disabled */ 767 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 768 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 769 770 public static final int CMD_BOOT_COMPLETED = BASE + 134; 771 772 /* We now have a valid IP configuration. */ 773 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 774 /* We no longer have a valid IP configuration. */ 775 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 776 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 777 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 778 779 /* Supplicant is trying to associate to a given BSSID */ 780 static final int CMD_TARGET_BSSID = BASE + 141; 781 782 /* Reload all networks and reconnect */ 783 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 784 785 static final int CMD_AUTO_CONNECT = BASE + 143; 786 787 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 788 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 789 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 790 791 static final int CMD_UNWANTED_NETWORK = BASE + 144; 792 793 static final int CMD_AUTO_ROAM = BASE + 145; 794 795 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 796 797 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 798 799 static final int CMD_NETWORK_STATUS = BASE + 148; 800 801 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 802 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 803 804 /* Remove a packages associated configrations */ 805 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 806 807 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 808 809 /* used to restart PNO when it was stopped due to association attempt */ 810 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 811 812 static int mRestartAutoJoinOffloadCounter = 0; 813 814 /* used to log if PNO was started */ 815 static final int CMD_STARTED_PNO_DBG = BASE + 155; 816 817 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 818 819 /* used to log if PNO was started */ 820 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 821 822 /* used to log if GSCAN was started */ 823 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 824 825 /* used to offload sending IP packet */ 826 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 827 828 /* used to stop offload sending IP packet */ 829 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 830 831 /* used to start rssi monitoring in hw */ 832 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 833 834 /* used to stop rssi moniroting in hw */ 835 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 836 837 /* used to indicated RSSI threshold breach in hw */ 838 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 839 840 841 842 /* Wifi state machine modes of operation */ 843 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 844 public static final int CONNECT_MODE = 1; 845 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 846 public static final int SCAN_ONLY_MODE = 2; 847 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 848 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 849 850 private static final int SUCCESS = 1; 851 private static final int FAILURE = -1; 852 853 /* Tracks if suspend optimizations need to be disabled by DHCP, 854 * screen or due to high perf mode. 855 * When any of them needs to disable it, we keep the suspend optimizations 856 * disabled 857 */ 858 private int mSuspendOptNeedsDisabled = 0; 859 860 private static final int SUSPEND_DUE_TO_DHCP = 1; 861 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 862 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 863 864 /* Tracks if user has enabled suspend optimizations through settings */ 865 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 866 867 /** 868 * Default framework scan interval in milliseconds. This is used in the scenario in which 869 * wifi chipset does not support background scanning to set up a 870 * periodic wake up scan so that the device can connect to a new access 871 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 872 * override this. 873 */ 874 private final int mDefaultFrameworkScanIntervalMs; 875 876 877 /** 878 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 879 */ 880 private final int mNoNetworksPeriodicScan; 881 882 /** 883 * Supplicant scan interval in milliseconds. 884 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 885 * from the default config if the setting is not set 886 */ 887 private long mSupplicantScanIntervalMs; 888 889 /** 890 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 891 */ 892 private long lastFullBandConnectedTimeMilli; 893 894 /** 895 * time interval to the next full band scan we will perform for 896 * autojoin while connected with screen lit 897 */ 898 private long fullBandConnectedTimeIntervalMilli; 899 900 /** 901 * max time interval to the next full band scan we will perform for 902 * autojoin while connected with screen lit 903 * Max time is 5 minutes 904 */ 905 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 906 907 /** 908 * Minimum time interval between enabling all networks. 909 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 910 * due to enabling every time. We add a threshold to avoid this. 911 */ 912 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 913 private long mLastEnableAllNetworksTime; 914 915 int mRunningBeaconCount = 0; 916 917 /** 918 * Starting and shutting down driver too quick causes problems leading to driver 919 * being in a bad state. Delay driver stop. 920 */ 921 private final int mDriverStopDelayMs; 922 private int mDelayedStopCounter; 923 private boolean mInDelayedStop = false; 924 925 // there is a delay between StateMachine change country code and Supplicant change country code 926 // here save the current WifiStateMachine set country code 927 private volatile String mSetCountryCode = null; 928 929 // config option that indicate whether or not to reset country code to default when 930 // cellular radio indicates country code loss 931 private boolean mRevertCountryCodeOnCellularLoss = false; 932 933 private String mDefaultCountryCode; 934 935 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 936 937 // Supplicant doesn't like setting the same country code multiple times (it may drop 938 // currently connected network), so we save the current device set country code here to avoid 939 // redundency 940 private String mDriverSetCountryCode = null; 941 942 /* Default parent state */ 943 private State mDefaultState = new DefaultState(); 944 /* Temporary initial state */ 945 private State mInitialState = new InitialState(); 946 /* Driver loaded, waiting for supplicant to start */ 947 private State mSupplicantStartingState = new SupplicantStartingState(); 948 /* Driver loaded and supplicant ready */ 949 private State mSupplicantStartedState = new SupplicantStartedState(); 950 /* Waiting for supplicant to stop and monitor to exit */ 951 private State mSupplicantStoppingState = new SupplicantStoppingState(); 952 /* Driver start issued, waiting for completed event */ 953 private State mDriverStartingState = new DriverStartingState(); 954 /* Driver started */ 955 private State mDriverStartedState = new DriverStartedState(); 956 /* Wait until p2p is disabled 957 * This is a special state which is entered right after we exit out of DriverStartedState 958 * before transitioning to another state. 959 */ 960 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 961 /* Driver stopping */ 962 private State mDriverStoppingState = new DriverStoppingState(); 963 /* Driver stopped */ 964 private State mDriverStoppedState = new DriverStoppedState(); 965 /* Scan for networks, no connection will be established */ 966 private State mScanModeState = new ScanModeState(); 967 /* Connecting to an access point */ 968 private State mConnectModeState = new ConnectModeState(); 969 /* Connected at 802.11 (L2) level */ 970 private State mL2ConnectedState = new L2ConnectedState(); 971 /* fetching IP after connection to access point (assoc+auth complete) */ 972 private State mObtainingIpState = new ObtainingIpState(); 973 /* Waiting for link quality verification to be complete */ 974 private State mVerifyingLinkState = new VerifyingLinkState(); 975 /* Connected with IP addr */ 976 private State mConnectedState = new ConnectedState(); 977 /* Roaming */ 978 private State mRoamingState = new RoamingState(); 979 /* disconnect issued, waiting for network disconnect confirmation */ 980 private State mDisconnectingState = new DisconnectingState(); 981 /* Network is not connected, supplicant assoc+auth is not complete */ 982 private State mDisconnectedState = new DisconnectedState(); 983 /* Waiting for WPS to be completed*/ 984 private State mWpsRunningState = new WpsRunningState(); 985 986 /* Soft ap is starting up */ 987 private State mSoftApStartingState = new SoftApStartingState(); 988 /* Soft ap is running */ 989 private State mSoftApStartedState = new SoftApStartedState(); 990 /* Soft ap is running and we are waiting for tether notification */ 991 private State mTetheringState = new TetheringState(); 992 /* Soft ap is running and we are tethered through connectivity service */ 993 private State mTetheredState = new TetheredState(); 994 /* Waiting for untether confirmation before stopping soft Ap */ 995 private State mUntetheringState = new UntetheringState(); 996 997 998 999 private class WifiScanListener implements WifiScanner.ScanListener { 1000 @Override 1001 public void onSuccess() { 1002 Log.e(TAG, "WifiScanListener onSuccess"); 1003 }; 1004 @Override 1005 public void onFailure(int reason, String description) { 1006 Log.e(TAG, "WifiScanListener onFailure"); 1007 }; 1008 @Override 1009 public void onPeriodChanged(int periodInMs) { 1010 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1011 } 1012 @Override 1013 public void onResults(WifiScanner.ScanData[] results) { 1014 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1015 } 1016 @Override 1017 public void onFullResult(ScanResult fullScanResult) { 1018 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1019 } 1020 1021 WifiScanListener() {} 1022 } 1023 1024 WifiScanListener mWifiScanListener = new WifiScanListener(); 1025 1026 1027 private class TetherStateChange { 1028 ArrayList<String> available; 1029 ArrayList<String> active; 1030 1031 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1032 available = av; 1033 active = ac; 1034 } 1035 } 1036 1037 public static class SimAuthRequestData { 1038 int networkId; 1039 int protocol; 1040 String ssid; 1041 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1042 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1043 String[] data; 1044 } 1045 1046 /** 1047 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1048 * {@link WifiManager#WIFI_STATE_DISABLING}, 1049 * {@link WifiManager#WIFI_STATE_ENABLED}, 1050 * {@link WifiManager#WIFI_STATE_ENABLING}, 1051 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1052 */ 1053 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1054 1055 /** 1056 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1057 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1058 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1059 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1060 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1061 */ 1062 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1063 1064 private static final int SCAN_REQUEST = 0; 1065 private static final String ACTION_START_SCAN = 1066 "com.android.server.WifiManager.action.START_SCAN"; 1067 1068 private static final int PNO_START_REQUEST = 0; 1069 private static final String ACTION_START_PNO = 1070 "com.android.server.WifiManager.action.START_PNO"; 1071 1072 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1073 private static final int DRIVER_STOP_REQUEST = 0; 1074 private static final String ACTION_DELAYED_DRIVER_STOP = 1075 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1076 1077 /** 1078 * Keep track of whether WIFI is running. 1079 */ 1080 private boolean mIsRunning = false; 1081 1082 /** 1083 * Keep track of whether we last told the battery stats we had started. 1084 */ 1085 private boolean mReportedRunning = false; 1086 1087 /** 1088 * Most recently set source of starting WIFI. 1089 */ 1090 private final WorkSource mRunningWifiUids = new WorkSource(); 1091 1092 /** 1093 * The last reported UIDs that were responsible for starting WIFI. 1094 */ 1095 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1096 1097 private final IBatteryStats mBatteryStats; 1098 1099 private String mTcpBufferSizes = null; 1100 1101 // Used for debug and stats gathering 1102 private static int sScanAlarmIntentCount = 0; 1103 1104 final static int frameworkMinScanIntervalSaneValue = 10000; 1105 1106 boolean mPnoEnabled; 1107 boolean mLazyRoamEnabled; 1108 long mGScanStartTimeMilli; 1109 long mGScanPeriodMilli; 1110 1111 public WifiStateMachine(Context context, String wlanInterface, 1112 WifiTrafficPoller trafficPoller) { 1113 super("WifiStateMachine"); 1114 mContext = context; 1115 mSetCountryCode = Settings.Global.getString( 1116 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1117 mInterfaceName = wlanInterface; 1118 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1119 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1120 BatteryStats.SERVICE_NAME)); 1121 1122 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1123 mNwService = INetworkManagementService.Stub.asInterface(b); 1124 1125 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1126 PackageManager.FEATURE_WIFI_DIRECT); 1127 1128 mWifiNative = new WifiNative(mInterfaceName); 1129 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1130 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1131 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1132 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1133 mWifiLogger = new WifiLogger(this); 1134 1135 mWifiInfo = new WifiInfo(); 1136 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1137 getHandler()); 1138 mLinkProperties = new LinkProperties(); 1139 1140 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1141 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1142 1143 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1144 1145 mNetworkInfo.setIsAvailable(false); 1146 mLastBssid = null; 1147 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1148 mLastSignalLevel = -1; 1149 1150 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1151 public void update() { 1152 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1153 } 1154 }); 1155 try { 1156 mNwService.registerObserver(mNetlinkTracker); 1157 } catch (RemoteException e) { 1158 loge("Couldn't register netlink tracker: " + e.toString()); 1159 } 1160 1161 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1162 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1163 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1164 1165 // Make sure the interval is not configured less than 10 seconds 1166 int period = mContext.getResources().getInteger( 1167 R.integer.config_wifi_framework_scan_interval); 1168 if (period < frameworkMinScanIntervalSaneValue) { 1169 period = frameworkMinScanIntervalSaneValue; 1170 } 1171 mDefaultFrameworkScanIntervalMs = period; 1172 1173 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1174 R.integer.config_wifi_no_network_periodic_scan_interval); 1175 1176 mDriverStopDelayMs = mContext.getResources().getInteger( 1177 R.integer.config_wifi_driver_stop_delay); 1178 1179 mBackgroundScanSupported = mContext.getResources().getBoolean( 1180 R.bool.config_wifi_background_scan_support); 1181 1182 mPrimaryDeviceType = mContext.getResources().getString( 1183 R.string.config_wifi_p2p_device_type); 1184 1185 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1186 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1187 1188 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1189 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1190 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1191 } 1192 1193 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1194 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1195 "but there is no default country code!! Resetting ..."); 1196 mRevertCountryCodeOnCellularLoss = false; 1197 } else if (mRevertCountryCodeOnCellularLoss) { 1198 logd("will revert to " + mDefaultCountryCode + " on MCC loss"); 1199 } 1200 1201 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1202 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1203 1204 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1205 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1206 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1207 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1208 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1209 // TODO - needs to be a bit more dynamic 1210 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1211 1212 mContext.registerReceiver( 1213 new BroadcastReceiver() { 1214 @Override 1215 public void onReceive(Context context, Intent intent) { 1216 ArrayList<String> available = intent.getStringArrayListExtra( 1217 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1218 ArrayList<String> active = intent.getStringArrayListExtra( 1219 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1220 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1221 } 1222 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1223 1224 mContext.registerReceiver( 1225 new BroadcastReceiver() { 1226 @Override 1227 public void onReceive(Context context, Intent intent) { 1228 sScanAlarmIntentCount++; // Used for debug only 1229 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1230 if (VDBG) 1231 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1232 } 1233 }, 1234 new IntentFilter(ACTION_START_SCAN)); 1235 1236 mContext.registerReceiver( 1237 new BroadcastReceiver() { 1238 @Override 1239 public void onReceive(Context context, Intent intent) { 1240 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1241 mRestartAutoJoinOffloadCounter, "pno alarm"); 1242 if (DBG) 1243 logd("PNO START ALARM sent"); 1244 } 1245 }, 1246 new IntentFilter(ACTION_START_PNO)); 1247 1248 1249 IntentFilter filter = new IntentFilter(); 1250 filter.addAction(Intent.ACTION_SCREEN_ON); 1251 filter.addAction(Intent.ACTION_SCREEN_OFF); 1252 mContext.registerReceiver( 1253 new BroadcastReceiver() { 1254 @Override 1255 public void onReceive(Context context, Intent intent) { 1256 String action = intent.getAction(); 1257 1258 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1259 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1260 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1261 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1262 } 1263 } 1264 }, filter); 1265 1266 mContext.registerReceiver( 1267 new BroadcastReceiver() { 1268 @Override 1269 public void onReceive(Context context, Intent intent) { 1270 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1271 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1272 } 1273 }, 1274 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1275 1276 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1277 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1278 new ContentObserver(getHandler()) { 1279 @Override 1280 public void onChange(boolean selfChange) { 1281 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1282 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1283 } 1284 }); 1285 1286 mContext.registerReceiver( 1287 new BroadcastReceiver() { 1288 @Override 1289 public void onReceive(Context context, Intent intent) { 1290 sendMessage(CMD_BOOT_COMPLETED); 1291 } 1292 }, 1293 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1294 1295 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1296 1297 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1298 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1299 1300 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1301 mSuspendWakeLock.setReferenceCounted(false); 1302 1303 mTcpBufferSizes = mContext.getResources().getString( 1304 com.android.internal.R.string.config_wifi_tcp_buffers); 1305 1306 addState(mDefaultState); 1307 addState(mInitialState, mDefaultState); 1308 addState(mSupplicantStartingState, mDefaultState); 1309 addState(mSupplicantStartedState, mDefaultState); 1310 addState(mDriverStartingState, mSupplicantStartedState); 1311 addState(mDriverStartedState, mSupplicantStartedState); 1312 addState(mScanModeState, mDriverStartedState); 1313 addState(mConnectModeState, mDriverStartedState); 1314 addState(mL2ConnectedState, mConnectModeState); 1315 addState(mObtainingIpState, mL2ConnectedState); 1316 addState(mVerifyingLinkState, mL2ConnectedState); 1317 addState(mConnectedState, mL2ConnectedState); 1318 addState(mRoamingState, mL2ConnectedState); 1319 addState(mDisconnectingState, mConnectModeState); 1320 addState(mDisconnectedState, mConnectModeState); 1321 addState(mWpsRunningState, mConnectModeState); 1322 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1323 addState(mDriverStoppingState, mSupplicantStartedState); 1324 addState(mDriverStoppedState, mSupplicantStartedState); 1325 addState(mSupplicantStoppingState, mDefaultState); 1326 addState(mSoftApStartingState, mDefaultState); 1327 addState(mSoftApStartedState, mDefaultState); 1328 addState(mTetheringState, mSoftApStartedState); 1329 addState(mTetheredState, mSoftApStartedState); 1330 addState(mUntetheringState, mSoftApStartedState); 1331 1332 setInitialState(mInitialState); 1333 1334 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1335 setLogOnlyTransitions(false); 1336 if (VDBG) setDbg(true); 1337 1338 //start the state machine 1339 start(); 1340 1341 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1342 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1343 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1344 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1345 } 1346 1347 1348 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1349 Intent intent = new Intent(action, null); 1350 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1351 //intent.setPackage(this.getClass().getPackage().getName()); 1352 intent.setPackage("android"); 1353 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1354 } 1355 1356 private int mVerboseLoggingLevel = 0; 1357 1358 int getVerboseLoggingLevel() { 1359 return mVerboseLoggingLevel; 1360 } 1361 1362 void enableVerboseLogging(int verbose) { 1363 mVerboseLoggingLevel = verbose; 1364 if (verbose > 0) { 1365 DBG = true; 1366 VDBG = true; 1367 PDBG = true; 1368 mLogMessages = true; 1369 mWifiNative.setSupplicantLogLevel("DEBUG"); 1370 } else { 1371 DBG = false; 1372 VDBG = false; 1373 PDBG = false; 1374 mLogMessages = false; 1375 mWifiNative.setSupplicantLogLevel("INFO"); 1376 } 1377 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1378 mWifiAutoJoinController.enableVerboseLogging(verbose); 1379 mWifiMonitor.enableVerboseLogging(verbose); 1380 mWifiNative.enableVerboseLogging(verbose); 1381 mWifiConfigStore.enableVerboseLogging(verbose); 1382 mSupplicantStateTracker.enableVerboseLogging(verbose); 1383 } 1384 1385 public void setHalBasedAutojoinOffload(int enabled) { 1386 // Shoult be used for debug only, triggered form developper settings 1387 // enabling HAl based PNO dynamically is not safe and not a normal operation 1388 mHalBasedPnoEnableInDevSettings = enabled > 0; 1389 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1390 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1391 sendMessage(CMD_DISCONNECT); 1392 } 1393 1394 int getHalBasedAutojoinOffload() { 1395 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1396 } 1397 1398 boolean useHalBasedAutoJoinOffload() { 1399 // all three settings need to be true: 1400 // - developper settings switch 1401 // - driver support 1402 // - config option 1403 return mHalBasedPnoEnableInDevSettings 1404 && mHalBasedPnoDriverSupported 1405 && mWifiConfigStore.enableHalBasedPno.get(); 1406 } 1407 1408 boolean allowFullBandScanAndAssociated() { 1409 1410 if (!getEnableAutoJoinWhenAssociated()) { 1411 if (DBG) { 1412 Log.e(TAG, "allowFullBandScanAndAssociated: " 1413 + " enableAutoJoinWhenAssociated : disallow"); 1414 } 1415 return false; 1416 } 1417 1418 if (mWifiInfo.txSuccessRate > 1419 mWifiConfigStore.maxTxPacketForFullScans 1420 || mWifiInfo.rxSuccessRate > 1421 mWifiConfigStore.maxRxPacketForFullScans) { 1422 if (DBG) { 1423 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1424 + mWifiInfo.txSuccessRate + " rx " 1425 + mWifiInfo.rxSuccessRate 1426 + " allow scan with traffic " + getAllowScansWithTraffic()); 1427 } 1428 // Too much traffic at the interface, hence no full band scan 1429 if (getAllowScansWithTraffic() == 0) { 1430 return false; 1431 } 1432 } 1433 1434 if (getCurrentState() != mConnectedState) { 1435 if (DBG) { 1436 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1437 } 1438 return false; 1439 } 1440 1441 return true; 1442 } 1443 1444 long mLastScanPermissionUpdate = 0; 1445 boolean mConnectedModeGScanOffloadStarted = false; 1446 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1447 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1448 // we want to throttle the GScan Stop->Start transition 1449 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1450 void updateAssociatedScanPermission() { 1451 1452 if (useHalBasedAutoJoinOffload()) { 1453 boolean allowed = allowFullBandScanAndAssociated(); 1454 1455 long now = System.currentTimeMillis(); 1456 if (mConnectedModeGScanOffloadStarted && !allowed) { 1457 if (DBG) { 1458 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1459 } 1460 stopPnoOffload(); 1461 stopGScan(" useHalBasedAutoJoinOffload"); 1462 } 1463 if (!mConnectedModeGScanOffloadStarted && allowed) { 1464 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1465 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1466 // to look for 5GHz BSSIDs and better networks 1467 if (DBG) { 1468 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1469 } 1470 startGScanConnectedModeOffload("updatePermission " 1471 + (now - mLastScanPermissionUpdate) + "ms"); 1472 mLastScanPermissionUpdate = now; 1473 } 1474 } 1475 } 1476 } 1477 1478 private int mAggressiveHandover = 0; 1479 1480 int getAggressiveHandover() { 1481 return mAggressiveHandover; 1482 } 1483 1484 void enableAggressiveHandover(int enabled) { 1485 mAggressiveHandover = enabled; 1486 } 1487 1488 public void clearANQPCache() { 1489 mWifiConfigStore.trimANQPCache(true); 1490 } 1491 1492 public void setAllowScansWithTraffic(int enabled) { 1493 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1494 } 1495 1496 public int getAllowScansWithTraffic() { 1497 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1498 } 1499 1500 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1501 boolean old_state = getEnableAutoJoinWhenAssociated(); 1502 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1503 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1504 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1505 null); 1506 } 1507 return true; 1508 } 1509 1510 public boolean getEnableAutoJoinWhenAssociated() { 1511 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1512 } 1513 /* 1514 * 1515 * Framework scan control 1516 */ 1517 1518 private boolean mAlarmEnabled = false; 1519 1520 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1521 1522 private void setScanAlarm(boolean enabled) { 1523 if (PDBG) { 1524 String state; 1525 if (enabled) state = "enabled"; else state = "disabled"; 1526 logd("setScanAlarm " + state 1527 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1528 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1529 } 1530 if (mBackgroundScanSupported == false) { 1531 // Scan alarm is only used for background scans if they are not 1532 // offloaded to the wifi chipset, hence enable the scan alarm 1533 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1534 enabled = true; 1535 } 1536 1537 if (enabled == mAlarmEnabled) return; 1538 if (enabled) { 1539 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1540 /* going to wake up the host processor to look for access points */ 1541 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1542 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1543 mScanIntent); 1544 mAlarmEnabled = true; 1545 } else { 1546 mAlarmManager.cancel(mScanIntent); 1547 mAlarmEnabled = false; 1548 } 1549 } 1550 1551 private void cancelDelayedScan() { 1552 mDelayedScanCounter.incrementAndGet(); 1553 } 1554 1555 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1556 ScanSettings settings, WorkSource workSource) { 1557 1558 if (counter != mDelayedScanCounter.get()) { 1559 return false; 1560 } 1561 if (restart) 1562 startDelayedScan(milli, settings, workSource); 1563 return true; 1564 } 1565 1566 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1567 if (milli <= 0) return; 1568 /** 1569 * The cases where the scan alarm should be run are : 1570 * - DisconnectedState && screenOn => used delayed timer 1571 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1572 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1573 * - ConnectedState && screenOn => used delayed timer 1574 */ 1575 1576 mDelayedScanCounter.incrementAndGet(); 1577 if (mScreenOn && 1578 (getCurrentState() == mDisconnectedState 1579 || getCurrentState() == mConnectedState)) { 1580 Bundle bundle = new Bundle(); 1581 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1582 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1583 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1584 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1585 mDelayedScanCounter.get(), bundle, milli); 1586 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1587 } else if (mBackgroundScanSupported == false 1588 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1589 setScanAlarm(true); 1590 if (DBG) logd("startDelayedScan start scan alarm -> " 1591 + mDelayedScanCounter + " milli " + milli); 1592 } else { 1593 if (DBG) logd("startDelayedScan unhandled -> " 1594 + mDelayedScanCounter + " milli " + milli); 1595 } 1596 } 1597 1598 private boolean setRandomMacOui() { 1599 String oui = mContext.getResources().getString( 1600 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1601 String[] ouiParts = oui.split("-"); 1602 byte[] ouiBytes = new byte[3]; 1603 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1604 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1605 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1606 1607 logd("Setting OUI to " + oui); 1608 return mWifiNative.setScanningMacOui(ouiBytes); 1609 } 1610 1611 /** 1612 * ****************************************************** 1613 * Methods exposed for public use 1614 * ****************************************************** 1615 */ 1616 1617 public Messenger getMessenger() { 1618 return new Messenger(getHandler()); 1619 } 1620 1621 public WifiMonitor getWifiMonitor() { 1622 return mWifiMonitor; 1623 } 1624 1625 /** 1626 * TODO: doc 1627 */ 1628 public boolean syncPingSupplicant(AsyncChannel channel) { 1629 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1630 boolean result = (resultMsg.arg1 != FAILURE); 1631 resultMsg.recycle(); 1632 return result; 1633 } 1634 1635 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1636 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1637 List<WifiChannel> list = null; 1638 if (resultMsg.obj != null) { 1639 list = new ArrayList<WifiChannel>(); 1640 String freqs = (String) resultMsg.obj; 1641 String[] lines = freqs.split("\n"); 1642 for (String line : lines) 1643 if (line.contains("MHz")) { 1644 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1645 WifiChannel c = new WifiChannel(); 1646 String[] prop = line.split(" "); 1647 if (prop.length < 5) continue; 1648 try { 1649 c.channelNum = Integer.parseInt(prop[1]); 1650 c.freqMHz = Integer.parseInt(prop[3]); 1651 } catch (NumberFormatException e) { 1652 } 1653 c.isDFS = line.contains("(DFS)"); 1654 list.add(c); 1655 } else if (line.contains("Mode[B] Channels:")) { 1656 // B channels are the same as G channels, skipped 1657 break; 1658 } 1659 } 1660 resultMsg.recycle(); 1661 return (list != null && list.size() > 0) ? list : null; 1662 } 1663 1664 /** 1665 * When settings allowing making use of untrusted networks change, trigger a scan 1666 * so as to kick of autojoin. 1667 */ 1668 public void startScanForUntrustedSettingChange() { 1669 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1670 } 1671 1672 /** 1673 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1674 * given to callingUid. 1675 * 1676 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1677 * workSource is specified. 1678 * @param workSource If not null, blame is given to workSource. 1679 * @param settings Scan settings, see {@link ScanSettings}. 1680 */ 1681 public void startScan(int callingUid, int scanCounter, 1682 ScanSettings settings, WorkSource workSource) { 1683 Bundle bundle = new Bundle(); 1684 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1685 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1686 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1687 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1688 } 1689 1690 // called from BroadcastListener 1691 1692 /** 1693 * Start reading new scan data 1694 * Data comes in as: 1695 * "scancount=5\n" 1696 * "nextcount=5\n" 1697 * "apcount=3\n" 1698 * "trunc\n" (optional) 1699 * "bssid=...\n" 1700 * "ssid=...\n" 1701 * "freq=...\n" (in Mhz) 1702 * "level=...\n" 1703 * "dist=...\n" (in cm) 1704 * "distsd=...\n" (standard deviation, in cm) 1705 * "====" 1706 * "bssid=...\n" 1707 * etc 1708 * "====" 1709 * "bssid=...\n" 1710 * etc 1711 * "%%%%" 1712 * "apcount=2\n" 1713 * "bssid=...\n" 1714 * etc 1715 * "%%%% 1716 * etc 1717 * "----" 1718 */ 1719 private final static boolean DEBUG_PARSE = false; 1720 1721 private long mDisconnectedTimeStamp = 0; 1722 1723 public long getDisconnectedTimeMilli() { 1724 if (getCurrentState() == mDisconnectedState 1725 && mDisconnectedTimeStamp != 0) { 1726 long now_ms = System.currentTimeMillis(); 1727 return now_ms - mDisconnectedTimeStamp; 1728 } 1729 return 0; 1730 } 1731 1732 // Keeping track of scan requests 1733 private long lastStartScanTimeStamp = 0; 1734 private long lastScanDuration = 0; 1735 // Last connect attempt is used to prevent scan requests: 1736 // - for a period of 10 seconds after attempting to connect 1737 private long lastConnectAttemptTimestamp = 0; 1738 private String lastScanFreqs = null; 1739 1740 // For debugging, keep track of last message status handling 1741 // TODO, find an equivalent mechanism as part of parent class 1742 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1743 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1744 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1745 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1746 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1747 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1748 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1749 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1750 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1751 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1752 1753 private int messageHandlingStatus = 0; 1754 1755 //TODO: this is used only to track connection attempts, however the link state and packet per 1756 //TODO: second logic should be folded into that 1757 private boolean checkOrDeferScanAllowed(Message msg) { 1758 long now = System.currentTimeMillis(); 1759 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1760 Message dmsg = Message.obtain(msg); 1761 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1762 return false; 1763 } 1764 return true; 1765 } 1766 1767 private int mOnTime = 0; 1768 private int mTxTime = 0; 1769 private int mRxTime = 0; 1770 private int mOnTimeStartScan = 0; 1771 private int mTxTimeStartScan = 0; 1772 private int mRxTimeStartScan = 0; 1773 private int mOnTimeScan = 0; 1774 private int mTxTimeScan = 0; 1775 private int mRxTimeScan = 0; 1776 private int mOnTimeThisScan = 0; 1777 private int mTxTimeThisScan = 0; 1778 private int mRxTimeThisScan = 0; 1779 1780 private int mOnTimeScreenStateChange = 0; 1781 private int mOnTimeAtLastReport = 0; 1782 private long lastOntimeReportTimeStamp = 0; 1783 private long lastScreenStateChangeTimeStamp = 0; 1784 private int mOnTimeLastReport = 0; 1785 private int mTxTimeLastReport = 0; 1786 private int mRxTimeLastReport = 0; 1787 1788 private long lastLinkLayerStatsUpdate = 0; 1789 1790 String reportOnTime() { 1791 long now = System.currentTimeMillis(); 1792 StringBuilder sb = new StringBuilder(); 1793 // Report stats since last report 1794 int on = mOnTime - mOnTimeLastReport; 1795 mOnTimeLastReport = mOnTime; 1796 int tx = mTxTime - mTxTimeLastReport; 1797 mTxTimeLastReport = mTxTime; 1798 int rx = mRxTime - mRxTimeLastReport; 1799 mRxTimeLastReport = mRxTime; 1800 int period = (int) (now - lastOntimeReportTimeStamp); 1801 lastOntimeReportTimeStamp = now; 1802 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1803 // Report stats since Screen State Changed 1804 on = mOnTime - mOnTimeScreenStateChange; 1805 period = (int) (now - lastScreenStateChangeTimeStamp); 1806 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1807 return sb.toString(); 1808 } 1809 1810 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1811 WifiLinkLayerStats stats = null; 1812 if (mWifiLinkLayerStatsSupported > 0) { 1813 String name = "wlan0"; 1814 stats = mWifiNative.getWifiLinkLayerStats(name); 1815 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1816 mWifiLinkLayerStatsSupported -= 1; 1817 } else if (stats != null) { 1818 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1819 mOnTime = stats.on_time; 1820 mTxTime = stats.tx_time; 1821 mRxTime = stats.rx_time; 1822 mRunningBeaconCount = stats.beacon_rx; 1823 } 1824 } 1825 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1826 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1827 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1828 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1829 } else { 1830 mWifiInfo.updatePacketRates(stats); 1831 } 1832 if (useHalBasedAutoJoinOffload()) { 1833 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1834 } 1835 return stats; 1836 } 1837 1838 void startRadioScanStats() { 1839 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1840 if (stats != null) { 1841 mOnTimeStartScan = stats.on_time; 1842 mTxTimeStartScan = stats.tx_time; 1843 mRxTimeStartScan = stats.rx_time; 1844 mOnTime = stats.on_time; 1845 mTxTime = stats.tx_time; 1846 mRxTime = stats.rx_time; 1847 } 1848 } 1849 1850 void closeRadioScanStats() { 1851 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1852 if (stats != null) { 1853 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1854 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1855 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1856 mOnTimeScan += mOnTimeThisScan; 1857 mTxTimeScan += mTxTimeThisScan; 1858 mRxTimeScan += mRxTimeThisScan; 1859 } 1860 } 1861 1862 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1863 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1864 if (ret != 0) { 1865 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1866 "): hardware error " + ret); 1867 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1868 } else { 1869 return ConnectivityManager.PacketKeepalive.SUCCESS; 1870 } 1871 } 1872 1873 int stopWifiIPPacketOffload(int slot) { 1874 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1875 if (ret != 0) { 1876 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1877 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1878 } else { 1879 return ConnectivityManager.PacketKeepalive.SUCCESS; 1880 } 1881 } 1882 1883 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1884 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1885 } 1886 1887 int stopRssiMonitoringOffload() { 1888 return mWifiNative.stopRssiMonitoring(); 1889 } 1890 1891 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1892 private void noteScanStart(int callingUid, WorkSource workSource) { 1893 long now = System.currentTimeMillis(); 1894 lastStartScanTimeStamp = now; 1895 lastScanDuration = 0; 1896 if (DBG) { 1897 String ts = String.format("[%,d ms]", now); 1898 if (workSource != null) { 1899 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1900 + " uid " + Integer.toString(callingUid)); 1901 } else { 1902 if (DBG) logd(ts + " noteScanstart no scan source" 1903 + " uid " + Integer.toString(callingUid)); 1904 } 1905 } 1906 startRadioScanStats(); 1907 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1908 && callingUid != SCAN_ALARM_SOURCE) 1909 || workSource != null)) { 1910 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1911 1912 WorkSource batteryWorkSource = mScanWorkSource; 1913 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1914 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1915 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1916 } 1917 1918 try { 1919 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1920 } catch (RemoteException e) { 1921 log(e.toString()); 1922 } 1923 } 1924 } 1925 1926 private void noteScanEnd() { 1927 long now = System.currentTimeMillis(); 1928 if (lastStartScanTimeStamp != 0) { 1929 lastScanDuration = now - lastStartScanTimeStamp; 1930 } 1931 lastStartScanTimeStamp = 0; 1932 if (DBG) { 1933 String ts = String.format("[%,d ms]", now); 1934 if (mScanWorkSource != null) 1935 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 1936 + " onTime=" + mOnTimeThisScan); 1937 else 1938 logd(ts + " noteScanEnd no scan source" 1939 + " onTime=" + mOnTimeThisScan); 1940 } 1941 if (mScanWorkSource != null) { 1942 try { 1943 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1944 } catch (RemoteException e) { 1945 log(e.toString()); 1946 } finally { 1947 mScanWorkSource = null; 1948 } 1949 } 1950 } 1951 1952 private void handleScanRequest(int type, Message message) { 1953 ScanSettings settings = null; 1954 WorkSource workSource = null; 1955 1956 // unbundle parameters 1957 Bundle bundle = (Bundle) message.obj; 1958 1959 if (bundle != null) { 1960 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1961 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1962 } 1963 1964 // parse scan settings 1965 String freqs = null; 1966 if (settings != null && settings.channelSet != null) { 1967 StringBuilder sb = new StringBuilder(); 1968 boolean first = true; 1969 for (WifiChannel channel : settings.channelSet) { 1970 if (!first) sb.append(','); 1971 else first = false; 1972 sb.append(channel.freqMHz); 1973 } 1974 freqs = sb.toString(); 1975 } 1976 1977 // call wifi native to start the scan 1978 if (startScanNative(type, freqs)) { 1979 // only count battery consumption if scan request is accepted 1980 noteScanStart(message.arg1, workSource); 1981 // a full scan covers everything, clearing scan request buffer 1982 if (freqs == null) 1983 mBufferedScanMsg.clear(); 1984 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1985 if (workSource != null) { 1986 // External worksource was passed along the scan request, 1987 // hence always send a broadcast 1988 mSendScanResultsBroadcast = true; 1989 } 1990 return; 1991 } 1992 1993 // if reach here, scan request is rejected 1994 1995 if (!mIsScanOngoing) { 1996 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1997 1998 // discard this request and pop up the next one 1999 if (mBufferedScanMsg.size() > 0) { 2000 sendMessage(mBufferedScanMsg.remove()); 2001 } 2002 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2003 } else if (!mIsFullScanOngoing) { 2004 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2005 // buffer the scan request to make sure specified channels will be scanned eventually 2006 if (freqs == null) 2007 mBufferedScanMsg.clear(); 2008 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2009 Message msg = obtainMessage(CMD_START_SCAN, 2010 message.arg1, message.arg2, bundle); 2011 mBufferedScanMsg.add(msg); 2012 } else { 2013 // if too many requests in buffer, combine them into a single full scan 2014 bundle = new Bundle(); 2015 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2016 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2017 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2018 mBufferedScanMsg.clear(); 2019 mBufferedScanMsg.add(msg); 2020 } 2021 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2022 } else { 2023 // mIsScanOngoing and mIsFullScanOngoing 2024 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2025 } 2026 } 2027 2028 2029 /** 2030 * return true iff scan request is accepted 2031 */ 2032 private boolean startScanNative(int type, String freqs) { 2033 if (mWifiNative.scan(type, freqs)) { 2034 mIsScanOngoing = true; 2035 mIsFullScanOngoing = (freqs == null); 2036 lastScanFreqs = freqs; 2037 return true; 2038 } 2039 return false; 2040 } 2041 2042 /** 2043 * TODO: doc 2044 */ 2045 public void setSupplicantRunning(boolean enable) { 2046 if (enable) { 2047 sendMessage(CMD_START_SUPPLICANT); 2048 } else { 2049 sendMessage(CMD_STOP_SUPPLICANT); 2050 } 2051 } 2052 2053 /** 2054 * TODO: doc 2055 */ 2056 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2057 if (enable) { 2058 sendMessage(CMD_START_AP, wifiConfig); 2059 } else { 2060 sendMessage(CMD_STOP_AP); 2061 } 2062 } 2063 2064 public void setWifiApConfiguration(WifiConfiguration config) { 2065 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2066 } 2067 2068 public WifiConfiguration syncGetWifiApConfiguration() { 2069 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2070 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2071 resultMsg.recycle(); 2072 return ret; 2073 } 2074 2075 /** 2076 * TODO: doc 2077 */ 2078 public int syncGetWifiState() { 2079 return mWifiState.get(); 2080 } 2081 2082 /** 2083 * TODO: doc 2084 */ 2085 public String syncGetWifiStateByName() { 2086 switch (mWifiState.get()) { 2087 case WIFI_STATE_DISABLING: 2088 return "disabling"; 2089 case WIFI_STATE_DISABLED: 2090 return "disabled"; 2091 case WIFI_STATE_ENABLING: 2092 return "enabling"; 2093 case WIFI_STATE_ENABLED: 2094 return "enabled"; 2095 case WIFI_STATE_UNKNOWN: 2096 return "unknown state"; 2097 default: 2098 return "[invalid state]"; 2099 } 2100 } 2101 2102 /** 2103 * TODO: doc 2104 */ 2105 public int syncGetWifiApState() { 2106 return mWifiApState.get(); 2107 } 2108 2109 /** 2110 * TODO: doc 2111 */ 2112 public String syncGetWifiApStateByName() { 2113 switch (mWifiApState.get()) { 2114 case WIFI_AP_STATE_DISABLING: 2115 return "disabling"; 2116 case WIFI_AP_STATE_DISABLED: 2117 return "disabled"; 2118 case WIFI_AP_STATE_ENABLING: 2119 return "enabling"; 2120 case WIFI_AP_STATE_ENABLED: 2121 return "enabled"; 2122 case WIFI_AP_STATE_FAILED: 2123 return "failed"; 2124 default: 2125 return "[invalid state]"; 2126 } 2127 } 2128 2129 /** 2130 * Get status information for the current connection, if any. 2131 * 2132 * @return a {@link WifiInfo} object containing information about the current connection 2133 */ 2134 public WifiInfo syncRequestConnectionInfo() { 2135 return getWiFiInfoForUid(Binder.getCallingUid()); 2136 } 2137 2138 public DhcpResults syncGetDhcpResults() { 2139 synchronized (mDhcpResultsLock) { 2140 return new DhcpResults(mDhcpResults); 2141 } 2142 } 2143 2144 /** 2145 * TODO: doc 2146 */ 2147 public void setDriverStart(boolean enable) { 2148 if (enable) { 2149 sendMessage(CMD_START_DRIVER); 2150 } else { 2151 sendMessage(CMD_STOP_DRIVER); 2152 } 2153 } 2154 2155 /** 2156 * TODO: doc 2157 */ 2158 public void setOperationalMode(int mode) { 2159 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2160 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2161 } 2162 2163 /** 2164 * TODO: doc 2165 */ 2166 public List<ScanResult> syncGetScanResultsList() { 2167 synchronized (mScanResultCache) { 2168 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2169 for (ScanDetail result : mScanResults) { 2170 scanList.add(new ScanResult(result.getScanResult())); 2171 } 2172 return scanList; 2173 } 2174 } 2175 2176 public void disableEphemeralNetwork(String SSID) { 2177 if (SSID != null) { 2178 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2179 } 2180 } 2181 2182 /** 2183 * Get unsynchronized pointer to scan result list 2184 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2185 */ 2186 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2187 return mScanResults; 2188 } 2189 2190 /** 2191 * Disconnect from Access Point 2192 */ 2193 public void disconnectCommand() { 2194 sendMessage(CMD_DISCONNECT); 2195 } 2196 2197 public void disconnectCommand(int uid, int reason) { 2198 sendMessage(CMD_DISCONNECT, uid, reason); 2199 } 2200 2201 /** 2202 * Initiate a reconnection to AP 2203 */ 2204 public void reconnectCommand() { 2205 sendMessage(CMD_RECONNECT); 2206 } 2207 2208 /** 2209 * Initiate a re-association to AP 2210 */ 2211 public void reassociateCommand() { 2212 sendMessage(CMD_REASSOCIATE); 2213 } 2214 2215 /** 2216 * Reload networks and then reconnect; helps load correct data for TLS networks 2217 */ 2218 2219 public void reloadTlsNetworksAndReconnect() { 2220 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2221 } 2222 2223 /** 2224 * Add a network synchronously 2225 * 2226 * @return network id of the new network 2227 */ 2228 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2229 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2230 int result = resultMsg.arg1; 2231 resultMsg.recycle(); 2232 return result; 2233 } 2234 2235 /** 2236 * Get configured networks synchronously 2237 * 2238 * @param channel 2239 * @return 2240 */ 2241 2242 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2243 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2244 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2245 resultMsg.recycle(); 2246 return result; 2247 } 2248 2249 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2250 Message resultMsg = channel.sendMessageSynchronously( 2251 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2252 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2253 resultMsg.recycle(); 2254 return result; 2255 } 2256 2257 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2258 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2259 return (WifiConfiguration) resultMsg.obj; 2260 } 2261 2262 /** 2263 * Get connection statistics synchronously 2264 * 2265 * @param channel 2266 * @return 2267 */ 2268 2269 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2270 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2271 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2272 resultMsg.recycle(); 2273 return result; 2274 } 2275 2276 /** 2277 * Get adaptors synchronously 2278 */ 2279 2280 public int syncGetSupportedFeatures(AsyncChannel channel) { 2281 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2282 int supportedFeatureSet = resultMsg.arg1; 2283 resultMsg.recycle(); 2284 return supportedFeatureSet; 2285 } 2286 2287 /** 2288 * Get link layers stats for adapter synchronously 2289 */ 2290 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2291 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2292 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2293 resultMsg.recycle(); 2294 return result; 2295 } 2296 2297 /** 2298 * Delete a network 2299 * 2300 * @param networkId id of the network to be removed 2301 */ 2302 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2303 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2304 boolean result = (resultMsg.arg1 != FAILURE); 2305 resultMsg.recycle(); 2306 return result; 2307 } 2308 2309 /** 2310 * Enable a network 2311 * 2312 * @param netId network id of the network 2313 * @param disableOthers true, if all other networks have to be disabled 2314 * @return {@code true} if the operation succeeds, {@code false} otherwise 2315 */ 2316 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2317 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2318 disableOthers ? 1 : 0); 2319 boolean result = (resultMsg.arg1 != FAILURE); 2320 resultMsg.recycle(); 2321 return result; 2322 } 2323 2324 /** 2325 * Disable a network 2326 * 2327 * @param netId network id of the network 2328 * @return {@code true} if the operation succeeds, {@code false} otherwise 2329 */ 2330 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2331 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2332 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2333 resultMsg.recycle(); 2334 return result; 2335 } 2336 2337 /** 2338 * Retrieves a WPS-NFC configuration token for the specified network 2339 * 2340 * @return a hex string representation of the WPS-NFC configuration token 2341 */ 2342 public String syncGetWpsNfcConfigurationToken(int netId) { 2343 return mWifiNative.getNfcWpsConfigurationToken(netId); 2344 } 2345 2346 void enableBackgroundScan(boolean enable) { 2347 if (enable) { 2348 mWifiConfigStore.enableAllNetworks(); 2349 } 2350 boolean ret = mWifiNative.enableBackgroundScan(enable); 2351 if (ret) { 2352 mLegacyPnoEnabled = enable; 2353 } else { 2354 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2355 } 2356 } 2357 2358 /** 2359 * Blacklist a BSSID. This will avoid the AP if there are 2360 * alternate APs to connect 2361 * 2362 * @param bssid BSSID of the network 2363 */ 2364 public void addToBlacklist(String bssid) { 2365 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2366 } 2367 2368 /** 2369 * Clear the blacklist list 2370 */ 2371 public void clearBlacklist() { 2372 sendMessage(CMD_CLEAR_BLACKLIST); 2373 } 2374 2375 public void enableRssiPolling(boolean enabled) { 2376 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2377 } 2378 2379 public void enableAllNetworks() { 2380 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2381 } 2382 2383 /** 2384 * Start filtering Multicast v4 packets 2385 */ 2386 public void startFilteringMulticastV4Packets() { 2387 mFilteringMulticastV4Packets.set(true); 2388 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2389 } 2390 2391 /** 2392 * Stop filtering Multicast v4 packets 2393 */ 2394 public void stopFilteringMulticastV4Packets() { 2395 mFilteringMulticastV4Packets.set(false); 2396 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2397 } 2398 2399 /** 2400 * Start filtering Multicast v4 packets 2401 */ 2402 public void startFilteringMulticastV6Packets() { 2403 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2404 } 2405 2406 /** 2407 * Stop filtering Multicast v4 packets 2408 */ 2409 public void stopFilteringMulticastV6Packets() { 2410 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2411 } 2412 2413 /** 2414 * Set high performance mode of operation. 2415 * Enabling would set active power mode and disable suspend optimizations; 2416 * disabling would set auto power mode and enable suspend optimizations 2417 * 2418 * @param enable true if enable, false otherwise 2419 */ 2420 public void setHighPerfModeEnabled(boolean enable) { 2421 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2422 } 2423 2424 /** 2425 * Set the country code 2426 * 2427 * @param countryCode following ISO 3166 format 2428 * @param persist {@code true} if the setting should be remembered. 2429 */ 2430 public synchronized void setCountryCode(String countryCode, boolean persist) { 2431 // If it's a good country code, apply after the current 2432 // wifi connection is terminated; ignore resetting of code 2433 // for now (it is unclear what the chipset should do when 2434 // country code is reset) 2435 2436 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2437 // else only when the new country code is different from the current one to set 2438 int countryCodeSequence = mCountryCodeSequence.get(); 2439 if (countryCodeSequence == 0 || TextUtils.equals(countryCode, mSetCountryCode) == false) { 2440 2441 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2442 mSetCountryCode = countryCode; 2443 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2444 countryCode); 2445 } 2446 } 2447 2448 /** 2449 * Get Network object of current wifi network 2450 * @return Network object of current wifi network 2451 */ 2452 public Network getCurrentNetwork() { 2453 if (mNetworkAgent != null) { 2454 return new Network(mNetworkAgent.netId); 2455 } else { 2456 return null; 2457 } 2458 } 2459 2460 /** 2461 * Get the country code 2462 * 2463 * @param countryCode following ISO 3166 format 2464 */ 2465 public String getCountryCode() { 2466 return mSetCountryCode; 2467 } 2468 2469 2470 /** 2471 * Set the operational frequency band 2472 * 2473 * @param band 2474 * @param persist {@code true} if the setting should be remembered. 2475 */ 2476 public void setFrequencyBand(int band, boolean persist) { 2477 if (persist) { 2478 Settings.Global.putInt(mContext.getContentResolver(), 2479 Settings.Global.WIFI_FREQUENCY_BAND, 2480 band); 2481 } 2482 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2483 } 2484 2485 /** 2486 * Enable TDLS for a specific MAC address 2487 */ 2488 public void enableTdls(String remoteMacAddress, boolean enable) { 2489 int enabler = enable ? 1 : 0; 2490 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2491 } 2492 2493 /** 2494 * Returns the operational frequency band 2495 */ 2496 public int getFrequencyBand() { 2497 return mFrequencyBand.get(); 2498 } 2499 2500 /** 2501 * Returns the wifi configuration file 2502 */ 2503 public String getConfigFile() { 2504 return mWifiConfigStore.getConfigFile(); 2505 } 2506 2507 /** 2508 * Send a message indicating bluetooth adapter connection state changed 2509 */ 2510 public void sendBluetoothAdapterStateChange(int state) { 2511 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2512 } 2513 2514 /** 2515 * Send a message indicating a package has been uninstalled. 2516 */ 2517 public void removeAppConfigs(String packageName, int uid) { 2518 // Build partial AppInfo manually - package may not exist in database any more 2519 ApplicationInfo ai = new ApplicationInfo(); 2520 ai.packageName = packageName; 2521 ai.uid = uid; 2522 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2523 } 2524 2525 /** 2526 * Send a message indicating a user has been removed. 2527 */ 2528 public void removeUserConfigs(int userId) { 2529 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2530 } 2531 2532 /** 2533 * Save configuration on supplicant 2534 * 2535 * @return {@code true} if the operation succeeds, {@code false} otherwise 2536 * <p/> 2537 * TODO: deprecate this 2538 */ 2539 public boolean syncSaveConfig(AsyncChannel channel) { 2540 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2541 boolean result = (resultMsg.arg1 != FAILURE); 2542 resultMsg.recycle(); 2543 return result; 2544 } 2545 2546 public void updateBatteryWorkSource(WorkSource newSource) { 2547 synchronized (mRunningWifiUids) { 2548 try { 2549 if (newSource != null) { 2550 mRunningWifiUids.set(newSource); 2551 } 2552 if (mIsRunning) { 2553 if (mReportedRunning) { 2554 // If the work source has changed since last time, need 2555 // to remove old work from battery stats. 2556 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2557 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2558 mRunningWifiUids); 2559 mLastRunningWifiUids.set(mRunningWifiUids); 2560 } 2561 } else { 2562 // Now being started, report it. 2563 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2564 mLastRunningWifiUids.set(mRunningWifiUids); 2565 mReportedRunning = true; 2566 } 2567 } else { 2568 if (mReportedRunning) { 2569 // Last reported we were running, time to stop. 2570 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2571 mLastRunningWifiUids.clear(); 2572 mReportedRunning = false; 2573 } 2574 } 2575 mWakeLock.setWorkSource(newSource); 2576 } catch (RemoteException ignore) { 2577 } 2578 } 2579 } 2580 2581 @Override 2582 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2583 super.dump(fd, pw, args); 2584 mSupplicantStateTracker.dump(fd, pw, args); 2585 pw.println("mLinkProperties " + mLinkProperties); 2586 pw.println("mWifiInfo " + mWifiInfo); 2587 pw.println("mDhcpResults " + mDhcpResults); 2588 pw.println("mNetworkInfo " + mNetworkInfo); 2589 pw.println("mLastSignalLevel " + mLastSignalLevel); 2590 pw.println("mLastBssid " + mLastBssid); 2591 pw.println("mLastNetworkId " + mLastNetworkId); 2592 pw.println("mOperationalMode " + mOperationalMode); 2593 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2594 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2595 pw.println("Supplicant status " + mWifiNative.status(true)); 2596 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2597 pw.println("mSetCountryCode " + mSetCountryCode); 2598 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2599 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2600 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2601 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2602 pw.println("SSID whitelist :" ); 2603 for (int i=0; i < mWhiteListedSsids.length; i++) { 2604 pw.println(" " + mWhiteListedSsids[i]); 2605 } 2606 } 2607 mNetworkFactory.dump(fd, pw, args); 2608 mUntrustedNetworkFactory.dump(fd, pw, args); 2609 pw.println(); 2610 mWifiConfigStore.dump(fd, pw, args); 2611 pw.println(); 2612 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2613 mWifiLogger.dump(fd, pw, args); 2614 } 2615 2616 /** 2617 * ****************************************************** 2618 * Internal private functions 2619 * ****************************************************** 2620 */ 2621 2622 private void logStateAndMessage(Message message, String state) { 2623 messageHandlingStatus = 0; 2624 if (mLogMessages) { 2625 //long now = SystemClock.elapsedRealtimeNanos(); 2626 //String ts = String.format("[%,d us]", now/1000); 2627 2628 logd(" " + state + " " + getLogRecString(message)); 2629 } 2630 } 2631 2632 /** 2633 * helper, prints the milli time since boot wi and w/o suspended time 2634 */ 2635 String printTime() { 2636 StringBuilder sb = new StringBuilder(); 2637 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2638 sb.append("/").append(SystemClock.elapsedRealtime()); 2639 return sb.toString(); 2640 } 2641 2642 /** 2643 * Return the additional string to be logged by LogRec, default 2644 * 2645 * @param msg that was processed 2646 * @return information to be logged as a String 2647 */ 2648 protected String getLogRecString(Message msg) { 2649 WifiConfiguration config; 2650 Long now; 2651 String report; 2652 String key; 2653 StringBuilder sb = new StringBuilder(); 2654 if (mScreenOn) { 2655 sb.append("!"); 2656 } 2657 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2658 sb.append("(").append(messageHandlingStatus).append(")"); 2659 } 2660 sb.append(smToString(msg)); 2661 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2662 sb.append(" uid=" + msg.sendingUid); 2663 } 2664 sb.append(" ").append(printTime()); 2665 switch (msg.what) { 2666 case CMD_STARTED_GSCAN_DBG: 2667 case CMD_STARTED_PNO_DBG: 2668 sb.append(" "); 2669 sb.append(Integer.toString(msg.arg1)); 2670 sb.append(" "); 2671 sb.append(Integer.toString(msg.arg2)); 2672 if (msg.obj != null) { 2673 sb.append(" " + (String)msg.obj); 2674 } 2675 break; 2676 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2677 sb.append(" "); 2678 sb.append(Integer.toString(msg.arg1)); 2679 sb.append(" "); 2680 sb.append(Integer.toString(msg.arg2)); 2681 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2682 if (msg.obj != null) { 2683 sb.append(" " + (String)msg.obj); 2684 } 2685 break; 2686 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2687 sb.append(" "); 2688 sb.append(Integer.toString(msg.arg1)); 2689 sb.append(" "); 2690 sb.append(Integer.toString(msg.arg2)); 2691 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2692 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2693 sb.append(" autojoinAllowed="); 2694 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2695 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2696 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2697 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2698 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2699 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2700 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2701 break; 2702 case CMD_PNO_NETWORK_FOUND: 2703 sb.append(" "); 2704 sb.append(Integer.toString(msg.arg1)); 2705 sb.append(" "); 2706 sb.append(Integer.toString(msg.arg2)); 2707 if (msg.obj != null) { 2708 ScanResult[] results = (ScanResult[])msg.obj; 2709 for (int i = 0; i < results.length; i++) { 2710 sb.append(" ").append(results[i].SSID).append(" "); 2711 sb.append(results[i].frequency); 2712 sb.append(" ").append(results[i].level); 2713 } 2714 } 2715 break; 2716 case CMD_START_SCAN: 2717 now = System.currentTimeMillis(); 2718 sb.append(" "); 2719 sb.append(Integer.toString(msg.arg1)); 2720 sb.append(" "); 2721 sb.append(Integer.toString(msg.arg2)); 2722 sb.append(" ic="); 2723 sb.append(Integer.toString(sScanAlarmIntentCount)); 2724 if (msg.obj != null) { 2725 Bundle bundle = (Bundle) msg.obj; 2726 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2727 if (request != 0) { 2728 sb.append(" proc(ms):").append(now - request); 2729 } 2730 } 2731 if (mIsScanOngoing) sb.append(" onGoing"); 2732 if (mIsFullScanOngoing) sb.append(" full"); 2733 if (lastStartScanTimeStamp != 0) { 2734 sb.append(" started:").append(lastStartScanTimeStamp); 2735 sb.append(",").append(now - lastStartScanTimeStamp); 2736 } 2737 if (lastScanDuration != 0) { 2738 sb.append(" dur:").append(lastScanDuration); 2739 } 2740 sb.append(" cnt=").append(mDelayedScanCounter); 2741 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2742 sb.append(" f=").append(mWifiInfo.getFrequency()); 2743 sb.append(" sc=").append(mWifiInfo.score); 2744 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2745 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2746 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2747 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2748 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2749 if (lastScanFreqs != null) { 2750 sb.append(" list=").append(lastScanFreqs); 2751 } else { 2752 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2753 } 2754 report = reportOnTime(); 2755 if (report != null) { 2756 sb.append(" ").append(report); 2757 } 2758 break; 2759 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2760 sb.append(" "); 2761 sb.append(Integer.toString(msg.arg1)); 2762 sb.append(" "); 2763 sb.append(Integer.toString(msg.arg2)); 2764 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2765 if (stateChangeResult != null) { 2766 sb.append(stateChangeResult.toString()); 2767 } 2768 break; 2769 case WifiManager.SAVE_NETWORK: 2770 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2771 sb.append(" "); 2772 sb.append(Integer.toString(msg.arg1)); 2773 sb.append(" "); 2774 sb.append(Integer.toString(msg.arg2)); 2775 if (lastSavedConfigurationAttempt != null) { 2776 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2777 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2778 if (lastSavedConfigurationAttempt.hiddenSSID) { 2779 sb.append(" hidden"); 2780 } 2781 if (lastSavedConfigurationAttempt.preSharedKey != null 2782 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2783 sb.append(" hasPSK"); 2784 } 2785 if (lastSavedConfigurationAttempt.ephemeral) { 2786 sb.append(" ephemeral"); 2787 } 2788 if (lastSavedConfigurationAttempt.selfAdded) { 2789 sb.append(" selfAdded"); 2790 } 2791 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2792 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2793 } 2794 break; 2795 case WifiManager.FORGET_NETWORK: 2796 sb.append(" "); 2797 sb.append(Integer.toString(msg.arg1)); 2798 sb.append(" "); 2799 sb.append(Integer.toString(msg.arg2)); 2800 if (lastForgetConfigurationAttempt != null) { 2801 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2802 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2803 if (lastForgetConfigurationAttempt.hiddenSSID) { 2804 sb.append(" hidden"); 2805 } 2806 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2807 sb.append(" hasPSK"); 2808 } 2809 if (lastForgetConfigurationAttempt.ephemeral) { 2810 sb.append(" ephemeral"); 2811 } 2812 if (lastForgetConfigurationAttempt.selfAdded) { 2813 sb.append(" selfAdded"); 2814 } 2815 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2816 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2817 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2818 } 2819 break; 2820 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2821 sb.append(" "); 2822 sb.append(Integer.toString(msg.arg1)); 2823 sb.append(" "); 2824 sb.append(Integer.toString(msg.arg2)); 2825 String bssid = (String) msg.obj; 2826 if (bssid != null && bssid.length() > 0) { 2827 sb.append(" "); 2828 sb.append(bssid); 2829 } 2830 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2831 break; 2832 case WifiMonitor.SCAN_RESULTS_EVENT: 2833 sb.append(" "); 2834 sb.append(Integer.toString(msg.arg1)); 2835 sb.append(" "); 2836 sb.append(Integer.toString(msg.arg2)); 2837 if (mScanResults != null) { 2838 sb.append(" found="); 2839 sb.append(mScanResults.size()); 2840 } 2841 sb.append(" known=").append(mNumScanResultsKnown); 2842 sb.append(" got=").append(mNumScanResultsReturned); 2843 if (lastScanDuration != 0) { 2844 sb.append(" dur:").append(lastScanDuration); 2845 } 2846 if (mOnTime != 0) { 2847 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2848 sb.append(",").append(mOnTime); 2849 } 2850 if (mTxTime != 0) { 2851 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2852 sb.append(",").append(mTxTime); 2853 } 2854 if (mRxTime != 0) { 2855 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2856 sb.append(",").append(mRxTime); 2857 } 2858 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2859 sb.append(String.format(" con=%d", mConnectionRequests)); 2860 key = mWifiConfigStore.getLastSelectedConfiguration(); 2861 if (key != null) { 2862 sb.append(" last=").append(key); 2863 } 2864 break; 2865 case WifiMonitor.SCAN_FAILED_EVENT: 2866 break; 2867 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2868 sb.append(" "); 2869 sb.append(Integer.toString(msg.arg1)); 2870 sb.append(" "); 2871 sb.append(Integer.toString(msg.arg2)); 2872 sb.append(" ").append(mLastBssid); 2873 sb.append(" nid=").append(mLastNetworkId); 2874 config = getCurrentWifiConfiguration(); 2875 if (config != null) { 2876 sb.append(" ").append(config.configKey()); 2877 } 2878 key = mWifiConfigStore.getLastSelectedConfiguration(); 2879 if (key != null) { 2880 sb.append(" last=").append(key); 2881 } 2882 break; 2883 case CMD_TARGET_BSSID: 2884 case CMD_ASSOCIATED_BSSID: 2885 sb.append(" "); 2886 sb.append(Integer.toString(msg.arg1)); 2887 sb.append(" "); 2888 sb.append(Integer.toString(msg.arg2)); 2889 if (msg.obj != null) { 2890 sb.append(" BSSID=").append((String) msg.obj); 2891 } 2892 if (mTargetRoamBSSID != null) { 2893 sb.append(" Target=").append(mTargetRoamBSSID); 2894 } 2895 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2896 break; 2897 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2898 if (msg.obj != null) { 2899 sb.append(" ").append((String) msg.obj); 2900 } 2901 sb.append(" nid=").append(msg.arg1); 2902 sb.append(" reason=").append(msg.arg2); 2903 if (mLastBssid != null) { 2904 sb.append(" lastbssid=").append(mLastBssid); 2905 } 2906 if (mWifiInfo.getFrequency() != -1) { 2907 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2908 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2909 } 2910 if (linkDebouncing) { 2911 sb.append(" debounce"); 2912 } 2913 break; 2914 case WifiMonitor.SSID_TEMP_DISABLED: 2915 case WifiMonitor.SSID_REENABLED: 2916 sb.append(" nid=").append(msg.arg1); 2917 if (msg.obj != null) { 2918 sb.append(" ").append((String) msg.obj); 2919 } 2920 config = getCurrentWifiConfiguration(); 2921 if (config != null) { 2922 sb.append(" cur=").append(config.configKey()); 2923 sb.append(" ajst=").append(config.autoJoinStatus); 2924 if (config.selfAdded) { 2925 sb.append(" selfAdded"); 2926 } 2927 if (config.status != 0) { 2928 sb.append(" st=").append(config.status); 2929 sb.append(" rs=").append(config.disableReason); 2930 } 2931 if (config.lastConnected != 0) { 2932 now = System.currentTimeMillis(); 2933 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2934 } 2935 if (mLastBssid != null) { 2936 sb.append(" lastbssid=").append(mLastBssid); 2937 } 2938 if (mWifiInfo.getFrequency() != -1) { 2939 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2940 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2941 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2942 } 2943 } 2944 break; 2945 case CMD_RSSI_POLL: 2946 case CMD_UNWANTED_NETWORK: 2947 case WifiManager.RSSI_PKTCNT_FETCH: 2948 sb.append(" "); 2949 sb.append(Integer.toString(msg.arg1)); 2950 sb.append(" "); 2951 sb.append(Integer.toString(msg.arg2)); 2952 if (mWifiInfo.getSSID() != null) 2953 if (mWifiInfo.getSSID() != null) 2954 sb.append(" ").append(mWifiInfo.getSSID()); 2955 if (mWifiInfo.getBSSID() != null) 2956 sb.append(" ").append(mWifiInfo.getBSSID()); 2957 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2958 sb.append(" f=").append(mWifiInfo.getFrequency()); 2959 sb.append(" sc=").append(mWifiInfo.score); 2960 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2961 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2962 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2963 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2964 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2965 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2966 report = reportOnTime(); 2967 if (report != null) { 2968 sb.append(" ").append(report); 2969 } 2970 if (wifiScoringReport != null) { 2971 sb.append(wifiScoringReport); 2972 } 2973 if (mConnectedModeGScanOffloadStarted) { 2974 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2975 } else { 2976 sb.append(" offload-stopped"); 2977 } 2978 break; 2979 case CMD_AUTO_CONNECT: 2980 case WifiManager.CONNECT_NETWORK: 2981 sb.append(" "); 2982 sb.append(Integer.toString(msg.arg1)); 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg2)); 2985 config = (WifiConfiguration) msg.obj; 2986 if (config != null) { 2987 sb.append(" ").append(config.configKey()); 2988 if (config.visibility != null) { 2989 sb.append(" ").append(config.visibility.toString()); 2990 } 2991 } 2992 if (mTargetRoamBSSID != null) { 2993 sb.append(" ").append(mTargetRoamBSSID); 2994 } 2995 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2996 config = getCurrentWifiConfiguration(); 2997 if (config != null) { 2998 sb.append(config.configKey()); 2999 if (config.visibility != null) { 3000 sb.append(" ").append(config.visibility.toString()); 3001 } 3002 } 3003 break; 3004 case CMD_AUTO_ROAM: 3005 sb.append(" "); 3006 sb.append(Integer.toString(msg.arg1)); 3007 sb.append(" "); 3008 sb.append(Integer.toString(msg.arg2)); 3009 ScanResult result = (ScanResult) msg.obj; 3010 if (result != null) { 3011 now = System.currentTimeMillis(); 3012 sb.append(" bssid=").append(result.BSSID); 3013 sb.append(" rssi=").append(result.level); 3014 sb.append(" freq=").append(result.frequency); 3015 if (result.seen > 0 && result.seen < now) { 3016 sb.append(" seen=").append(now - result.seen); 3017 } else { 3018 // Somehow the timestamp for this scan result is inconsistent 3019 sb.append(" !seen=").append(result.seen); 3020 } 3021 } 3022 if (mTargetRoamBSSID != null) { 3023 sb.append(" ").append(mTargetRoamBSSID); 3024 } 3025 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3026 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3027 break; 3028 case CMD_ADD_OR_UPDATE_NETWORK: 3029 sb.append(" "); 3030 sb.append(Integer.toString(msg.arg1)); 3031 sb.append(" "); 3032 sb.append(Integer.toString(msg.arg2)); 3033 if (msg.obj != null) { 3034 config = (WifiConfiguration) msg.obj; 3035 sb.append(" ").append(config.configKey()); 3036 sb.append(" prio=").append(config.priority); 3037 sb.append(" status=").append(config.status); 3038 if (config.BSSID != null) { 3039 sb.append(" ").append(config.BSSID); 3040 } 3041 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3042 if (curConfig != null) { 3043 if (curConfig.configKey().equals(config.configKey())) { 3044 sb.append(" is current"); 3045 } else { 3046 sb.append(" current=").append(curConfig.configKey()); 3047 sb.append(" prio=").append(curConfig.priority); 3048 sb.append(" status=").append(curConfig.status); 3049 } 3050 } 3051 } 3052 break; 3053 case WifiManager.DISABLE_NETWORK: 3054 case CMD_ENABLE_NETWORK: 3055 sb.append(" "); 3056 sb.append(Integer.toString(msg.arg1)); 3057 sb.append(" "); 3058 sb.append(Integer.toString(msg.arg2)); 3059 key = mWifiConfigStore.getLastSelectedConfiguration(); 3060 if (key != null) { 3061 sb.append(" last=").append(key); 3062 } 3063 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3064 if (config != null && (key == null || !config.configKey().equals(key))) { 3065 sb.append(" target=").append(key); 3066 } 3067 break; 3068 case CMD_GET_CONFIGURED_NETWORKS: 3069 sb.append(" "); 3070 sb.append(Integer.toString(msg.arg1)); 3071 sb.append(" "); 3072 sb.append(Integer.toString(msg.arg2)); 3073 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3074 break; 3075 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3076 sb.append(" "); 3077 sb.append(Integer.toString(msg.arg1)); 3078 sb.append(" "); 3079 sb.append(Integer.toString(msg.arg2)); 3080 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3081 sb.append(",").append(mWifiInfo.txBad); 3082 sb.append(",").append(mWifiInfo.txRetries); 3083 break; 3084 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3085 sb.append(" "); 3086 sb.append(Integer.toString(msg.arg1)); 3087 sb.append(" "); 3088 sb.append(Integer.toString(msg.arg2)); 3089 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3090 sb.append(" OK "); 3091 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3092 sb.append(" FAIL "); 3093 } 3094 if (mLinkProperties != null) { 3095 if (mLinkProperties.hasIPv4Address()) { 3096 sb.append(" v4"); 3097 } 3098 if (mLinkProperties.hasGlobalIPv6Address()) { 3099 sb.append(" v6"); 3100 } 3101 if (mLinkProperties.hasIPv4DefaultRoute()) { 3102 sb.append(" v4r"); 3103 } 3104 if (mLinkProperties.hasIPv6DefaultRoute()) { 3105 sb.append(" v6r"); 3106 } 3107 if (mLinkProperties.hasIPv4DnsServer()) { 3108 sb.append(" v4dns"); 3109 } 3110 if (mLinkProperties.hasIPv6DnsServer()) { 3111 sb.append(" v6dns"); 3112 } 3113 } 3114 break; 3115 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3116 sb.append(" "); 3117 sb.append(Integer.toString(msg.arg1)); 3118 sb.append(" "); 3119 sb.append(Integer.toString(msg.arg2)); 3120 if (msg.obj != null) { 3121 NetworkInfo info = (NetworkInfo) msg.obj; 3122 NetworkInfo.State state = info.getState(); 3123 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3124 if (state != null) { 3125 sb.append(" st=").append(state); 3126 } 3127 if (detailedState != null) { 3128 sb.append("/").append(detailedState); 3129 } 3130 } 3131 break; 3132 case CMD_IP_CONFIGURATION_LOST: 3133 int count = -1; 3134 WifiConfiguration c = getCurrentWifiConfiguration(); 3135 if (c != null) count = c.numIpConfigFailures; 3136 sb.append(" "); 3137 sb.append(Integer.toString(msg.arg1)); 3138 sb.append(" "); 3139 sb.append(Integer.toString(msg.arg2)); 3140 sb.append(" failures: "); 3141 sb.append(Integer.toString(count)); 3142 sb.append("/"); 3143 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3144 if (mWifiInfo.getBSSID() != null) { 3145 sb.append(" ").append(mWifiInfo.getBSSID()); 3146 } 3147 if (c != null) { 3148 ScanDetailCache scanDetailCache = 3149 mWifiConfigStore.getScanDetailCache(c); 3150 if (scanDetailCache != null) { 3151 for (ScanDetail sd : scanDetailCache.values()) { 3152 ScanResult r = sd.getScanResult(); 3153 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3154 sb.append(" ipfail=").append(r.numIpConfigFailures); 3155 sb.append(",st=").append(r.autoJoinStatus); 3156 } 3157 } 3158 } 3159 sb.append(" -> ajst=").append(c.autoJoinStatus); 3160 sb.append(" ").append(c.disableReason); 3161 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3162 sb.append(",").append(mWifiInfo.txBad); 3163 sb.append(",").append(mWifiInfo.txRetries); 3164 } 3165 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3166 break; 3167 case CMD_UPDATE_LINKPROPERTIES: 3168 sb.append(" "); 3169 sb.append(Integer.toString(msg.arg1)); 3170 sb.append(" "); 3171 sb.append(Integer.toString(msg.arg2)); 3172 if (mLinkProperties != null) { 3173 if (mLinkProperties.hasIPv4Address()) { 3174 sb.append(" v4"); 3175 } 3176 if (mLinkProperties.hasGlobalIPv6Address()) { 3177 sb.append(" v6"); 3178 } 3179 if (mLinkProperties.hasIPv4DefaultRoute()) { 3180 sb.append(" v4r"); 3181 } 3182 if (mLinkProperties.hasIPv6DefaultRoute()) { 3183 sb.append(" v6r"); 3184 } 3185 if (mLinkProperties.hasIPv4DnsServer()) { 3186 sb.append(" v4dns"); 3187 } 3188 if (mLinkProperties.hasIPv6DnsServer()) { 3189 sb.append(" v6dns"); 3190 } 3191 } 3192 break; 3193 case CMD_IP_REACHABILITY_LOST: 3194 if (msg.obj != null) { 3195 sb.append(" ").append((String) msg.obj); 3196 } 3197 break; 3198 case CMD_SET_COUNTRY_CODE: 3199 sb.append(" "); 3200 sb.append(Integer.toString(msg.arg1)); 3201 sb.append(" "); 3202 sb.append(Integer.toString(msg.arg2)); 3203 if (msg.obj != null) { 3204 sb.append(" ").append((String) msg.obj); 3205 } 3206 break; 3207 case CMD_ROAM_WATCHDOG_TIMER: 3208 sb.append(" "); 3209 sb.append(Integer.toString(msg.arg1)); 3210 sb.append(" "); 3211 sb.append(Integer.toString(msg.arg2)); 3212 sb.append(" cur=").append(roamWatchdogCount); 3213 break; 3214 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3215 sb.append(" "); 3216 sb.append(Integer.toString(msg.arg1)); 3217 sb.append(" "); 3218 sb.append(Integer.toString(msg.arg2)); 3219 sb.append(" cur=").append(disconnectingWatchdogCount); 3220 break; 3221 case CMD_START_RSSI_MONITORING_OFFLOAD: 3222 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3223 case CMD_RSSI_THRESHOLD_BREACH: 3224 sb.append(" rssi="); 3225 sb.append(Integer.toString(msg.arg1)); 3226 sb.append(" thresholds="); 3227 sb.append(Arrays.toString(mRssiRanges)); 3228 break; 3229 default: 3230 sb.append(" "); 3231 sb.append(Integer.toString(msg.arg1)); 3232 sb.append(" "); 3233 sb.append(Integer.toString(msg.arg2)); 3234 break; 3235 } 3236 3237 return sb.toString(); 3238 } 3239 3240 private void stopPnoOffload() { 3241 3242 // clear the PNO list 3243 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3244 Log.e(TAG, "Failed to stop pno"); 3245 } 3246 3247 } 3248 3249 3250 private boolean configureSsidWhiteList() { 3251 3252 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3253 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3254 return true; 3255 } 3256 3257 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3258 loge("configureSsidWhiteList couldnt program SSID list, size " 3259 + mWhiteListedSsids.length); 3260 return false; 3261 } 3262 3263 logd("configureSsidWhiteList success"); 3264 return true; 3265 } 3266 3267 // In associated more, lazy roam will be looking for 5GHz roam candidate 3268 private boolean configureLazyRoam() { 3269 boolean status; 3270 if (!useHalBasedAutoJoinOffload()) return false; 3271 3272 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3273 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3274 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3275 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3276 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3277 params.A_band_max_boost = 65; 3278 params.lazy_roam_hysteresis = 25; 3279 params.alert_roam_rssi_trigger = -75; 3280 3281 if (DBG) { 3282 Log.e(TAG, "configureLazyRoam " + params.toString()); 3283 } 3284 3285 if (!WifiNative.setLazyRoam(true, params)) { 3286 3287 Log.e(TAG, "configureLazyRoam couldnt program params"); 3288 3289 return false; 3290 } 3291 if (DBG) { 3292 Log.e(TAG, "configureLazyRoam success"); 3293 } 3294 return true; 3295 } 3296 3297 // In associated more, lazy roam will be looking for 5GHz roam candidate 3298 private boolean stopLazyRoam() { 3299 boolean status; 3300 if (!useHalBasedAutoJoinOffload()) return false; 3301 if (DBG) { 3302 Log.e(TAG, "stopLazyRoam"); 3303 } 3304 return WifiNative.setLazyRoam(false, null); 3305 } 3306 3307 private boolean startGScanConnectedModeOffload(String reason) { 3308 if (DBG) { 3309 if (reason == null) { 3310 reason = ""; 3311 } 3312 logd("startGScanConnectedModeOffload " + reason); 3313 } 3314 stopGScan("startGScanConnectedModeOffload " + reason); 3315 if (!mScreenOn) return false; 3316 3317 if (USE_PAUSE_SCANS) { 3318 mWifiNative.pauseScan(); 3319 } 3320 mPnoEnabled = configurePno(); 3321 if (mPnoEnabled == false) { 3322 if (USE_PAUSE_SCANS) { 3323 mWifiNative.restartScan(); 3324 } 3325 return false; 3326 } 3327 mLazyRoamEnabled = configureLazyRoam(); 3328 if (mLazyRoamEnabled == false) { 3329 if (USE_PAUSE_SCANS) { 3330 mWifiNative.restartScan(); 3331 } 3332 return false; 3333 } 3334 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3335 configureSsidWhiteList(); 3336 } 3337 if (!startConnectedGScan(reason)) { 3338 if (USE_PAUSE_SCANS) { 3339 mWifiNative.restartScan(); 3340 } 3341 return false; 3342 } 3343 if (USE_PAUSE_SCANS) { 3344 mWifiNative.restartScan(); 3345 } 3346 mConnectedModeGScanOffloadStarted = true; 3347 if (DBG) { 3348 logd("startGScanConnectedModeOffload success"); 3349 } 3350 return true; 3351 } 3352 3353 private boolean startGScanDisconnectedModeOffload(String reason) { 3354 if (DBG) { 3355 logd("startGScanDisconnectedModeOffload " + reason); 3356 } 3357 stopGScan("startGScanDisconnectedModeOffload " + reason); 3358 if (USE_PAUSE_SCANS) { 3359 mWifiNative.pauseScan(); 3360 } 3361 mPnoEnabled = configurePno(); 3362 if (mPnoEnabled == false) { 3363 if (USE_PAUSE_SCANS) { 3364 mWifiNative.restartScan(); 3365 } 3366 return false; 3367 } 3368 if (!startDisconnectedGScan(reason)) { 3369 if (USE_PAUSE_SCANS) { 3370 mWifiNative.restartScan(); 3371 } 3372 return false; 3373 } 3374 if (USE_PAUSE_SCANS) { 3375 mWifiNative.restartScan(); 3376 } 3377 return true; 3378 } 3379 3380 private boolean configurePno() { 3381 if (!useHalBasedAutoJoinOffload()) return false; 3382 3383 if (mWifiScanner == null) { 3384 log("configurePno: mWifiScanner is null "); 3385 return true; 3386 } 3387 3388 List<WifiNative.WifiPnoNetwork> llist 3389 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3390 if (llist == null || llist.size() == 0) { 3391 stopPnoOffload(); 3392 log("configurePno: empty PNO list "); 3393 return true; 3394 } 3395 if (DBG) { 3396 log("configurePno: got llist size " + llist.size()); 3397 } 3398 3399 // first program the network we want to look for thru the pno API 3400 WifiNative.WifiPnoNetwork list[] 3401 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3402 3403 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3404 Log.e(TAG, "Failed to set pno, length = " + list.length); 3405 return false; 3406 } 3407 3408 if (true) { 3409 StringBuilder sb = new StringBuilder(); 3410 for (WifiNative.WifiPnoNetwork network : list) { 3411 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3412 sb.append(" flags="); 3413 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3414 sb.append("] "); 3415 3416 } 3417 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3418 } 3419 return true; 3420 } 3421 3422 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3423 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3424 3425 private boolean startConnectedGScan(String reason) { 3426 // send a scan background request so as to kick firmware 3427 // 5GHz roaming and autojoin 3428 // We do this only if screen is on 3429 WifiScanner.ScanSettings settings; 3430 3431 if (mPnoEnabled || mLazyRoamEnabled) { 3432 settings = new WifiScanner.ScanSettings(); 3433 settings.band = WifiScanner.WIFI_BAND_BOTH; 3434 long now = System.currentTimeMillis(); 3435 3436 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3437 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3438 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3439 } else { 3440 mGScanStartTimeMilli = now; 3441 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3442 // if we start offload with short interval, then reconfigure it after a given 3443 // duration of time so as to reduce the scan frequency 3444 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3445 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3446 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3447 (long)delay); 3448 mRestartAutoJoinOffloadCounter++; 3449 } 3450 mGScanPeriodMilli = settings.periodInMs; 3451 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3452 if (DBG) { 3453 log("startConnectedScan: settings band="+ settings.band 3454 + " period=" + settings.periodInMs); 3455 } 3456 3457 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3458 if (true) { 3459 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3460 } 3461 } 3462 return true; 3463 } 3464 3465 private boolean startDisconnectedGScan(String reason) { 3466 // send a scan background request so as to kick firmware 3467 // PNO 3468 // This is done in both screen On and screen Off modes 3469 WifiScanner.ScanSettings settings; 3470 3471 if (mWifiScanner == null) { 3472 log("startDisconnectedGScan: no wifi scanner"); 3473 return false; 3474 } 3475 3476 if (mPnoEnabled || mLazyRoamEnabled) { 3477 settings = new WifiScanner.ScanSettings(); 3478 settings.band = WifiScanner.WIFI_BAND_BOTH; 3479 long now = System.currentTimeMillis(); 3480 3481 3482 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3483 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3484 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3485 } else { 3486 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3487 mGScanStartTimeMilli = now; 3488 // if we start offload with short interval, then reconfigure it after a given 3489 // duration of time so as to reduce the scan frequency 3490 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3491 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3492 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3493 (long)delay); 3494 mRestartAutoJoinOffloadCounter++; 3495 } 3496 mGScanPeriodMilli = settings.periodInMs; 3497 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3498 if (DBG) { 3499 log("startDisconnectedScan: settings band="+ settings.band 3500 + " period=" + settings.periodInMs); 3501 } 3502 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3503 if (true) { 3504 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3505 } 3506 } 3507 return true; 3508 } 3509 3510 private boolean stopGScan(String reason) { 3511 mGScanStartTimeMilli = 0; 3512 mGScanPeriodMilli = 0; 3513 if (mWifiScanner != null) { 3514 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3515 } 3516 mConnectedModeGScanOffloadStarted = false; 3517 if (true) { 3518 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3519 } 3520 return true; 3521 } 3522 3523 private void handleScreenStateChanged(boolean screenOn) { 3524 mScreenOn = screenOn; 3525 if (PDBG) { 3526 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3527 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3528 + " state " + getCurrentState().getName() 3529 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3530 } 3531 enableRssiPolling(screenOn); 3532 if (mUserWantsSuspendOpt.get()) { 3533 if (screenOn) { 3534 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3535 } else { 3536 // Allow 2s for suspend optimizations to be set 3537 mSuspendWakeLock.acquire(2000); 3538 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3539 } 3540 } 3541 mScreenBroadcastReceived.set(true); 3542 3543 getWifiLinkLayerStats(false); 3544 mOnTimeScreenStateChange = mOnTime; 3545 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3546 3547 cancelDelayedScan(); 3548 3549 if (screenOn) { 3550 enableBackgroundScan(false); 3551 setScanAlarm(false); 3552 clearBlacklist(); 3553 3554 fullBandConnectedTimeIntervalMilli 3555 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3556 // In either Disconnectedstate or ConnectedState, 3557 // start the scan alarm so as to enable autojoin 3558 if (getCurrentState() == mConnectedState 3559 && allowFullBandScanAndAssociated()) { 3560 if (useHalBasedAutoJoinOffload()) { 3561 startGScanConnectedModeOffload("screenOnConnected"); 3562 } else { 3563 // Scan after 500ms 3564 startDelayedScan(500, null, null); 3565 } 3566 } else if (getCurrentState() == mDisconnectedState) { 3567 if (useHalBasedAutoJoinOffload()) { 3568 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3569 } else { 3570 // Scan after 500ms 3571 startDelayedScan(500, null, null); 3572 } 3573 } 3574 } else { 3575 if (getCurrentState() == mDisconnectedState) { 3576 // Screen Off and Disconnected and chipset doesn't support scan offload 3577 // => start scan alarm 3578 // Screen Off and Disconnected and chipset does support scan offload 3579 // => will use scan offload (i.e. background scan) 3580 if (useHalBasedAutoJoinOffload()) { 3581 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3582 } else { 3583 if (!mBackgroundScanSupported) { 3584 setScanAlarm(true); 3585 } else { 3586 if (!mIsScanOngoing) { 3587 enableBackgroundScan(true); 3588 } 3589 } 3590 } 3591 } else { 3592 enableBackgroundScan(false); 3593 if (useHalBasedAutoJoinOffload()) { 3594 // don't try stop Gscan if it is not enabled 3595 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3596 } 3597 } 3598 } 3599 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3600 3601 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3602 } 3603 3604 private void checkAndSetConnectivityInstance() { 3605 if (mCm == null) { 3606 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3607 } 3608 } 3609 3610 private boolean startTethering(ArrayList<String> available) { 3611 3612 boolean wifiAvailable = false; 3613 3614 checkAndSetConnectivityInstance(); 3615 3616 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3617 3618 for (String intf : available) { 3619 for (String regex : wifiRegexs) { 3620 if (intf.matches(regex)) { 3621 3622 InterfaceConfiguration ifcg = null; 3623 try { 3624 ifcg = mNwService.getInterfaceConfig(intf); 3625 if (ifcg != null) { 3626 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3627 ifcg.setLinkAddress(new LinkAddress( 3628 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3629 ifcg.setInterfaceUp(); 3630 3631 mNwService.setInterfaceConfig(intf, ifcg); 3632 } 3633 } catch (Exception e) { 3634 loge("Error configuring interface " + intf + ", :" + e); 3635 return false; 3636 } 3637 3638 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3639 loge("Error tethering on " + intf); 3640 return false; 3641 } 3642 mTetherInterfaceName = intf; 3643 return true; 3644 } 3645 } 3646 } 3647 // We found no interfaces to tether 3648 return false; 3649 } 3650 3651 private void stopTethering() { 3652 3653 checkAndSetConnectivityInstance(); 3654 3655 /* Clear the interface config to allow dhcp correctly configure new 3656 ip settings */ 3657 InterfaceConfiguration ifcg = null; 3658 try { 3659 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3660 if (ifcg != null) { 3661 ifcg.setLinkAddress( 3662 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3663 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3664 } 3665 } catch (Exception e) { 3666 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3667 } 3668 3669 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3670 loge("Untether initiate failed!"); 3671 } 3672 } 3673 3674 private boolean isWifiTethered(ArrayList<String> active) { 3675 3676 checkAndSetConnectivityInstance(); 3677 3678 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3679 for (String intf : active) { 3680 for (String regex : wifiRegexs) { 3681 if (intf.matches(regex)) { 3682 return true; 3683 } 3684 } 3685 } 3686 // We found no interfaces that are tethered 3687 return false; 3688 } 3689 3690 /** 3691 * Set the country code from the system setting value, if any. 3692 */ 3693 private void initializeCountryCode() { 3694 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3695 Settings.Global.WIFI_COUNTRY_CODE); 3696 if (countryCode != null && !countryCode.isEmpty()) { 3697 setCountryCode(countryCode, false); 3698 } else { 3699 //use driver default 3700 } 3701 } 3702 3703 /** 3704 * Set the frequency band from the system setting value, if any. 3705 */ 3706 private void setFrequencyBand() { 3707 int band = Settings.Global.getInt(mContext.getContentResolver(), 3708 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3709 3710 if (mWifiNative.setBand(band)) { 3711 mFrequencyBand.set(band); 3712 if (PDBG) { 3713 logd("done set frequency band " + band); 3714 } 3715 } else { 3716 loge("Failed to set frequency band " + band); 3717 } 3718 } 3719 3720 3721 3722 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3723 if (DBG) { 3724 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3725 + " -want " + mUserWantsSuspendOpt.get() 3726 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3727 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3728 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3729 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3730 } 3731 //mWifiNative.setSuspendOptimizations(enabled); 3732 3733 if (enabled) { 3734 mSuspendOptNeedsDisabled &= ~reason; 3735 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3736 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3737 if (DBG) { 3738 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3739 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3740 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3741 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3742 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3743 } 3744 mWifiNative.setSuspendOptimizations(true); 3745 } 3746 } else { 3747 mSuspendOptNeedsDisabled |= reason; 3748 mWifiNative.setSuspendOptimizations(false); 3749 } 3750 } 3751 3752 private void setSuspendOptimizations(int reason, boolean enabled) { 3753 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3754 if (enabled) { 3755 mSuspendOptNeedsDisabled &= ~reason; 3756 } else { 3757 mSuspendOptNeedsDisabled |= reason; 3758 } 3759 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3760 } 3761 3762 private void setWifiState(int wifiState) { 3763 final int previousWifiState = mWifiState.get(); 3764 3765 try { 3766 if (wifiState == WIFI_STATE_ENABLED) { 3767 mBatteryStats.noteWifiOn(); 3768 } else if (wifiState == WIFI_STATE_DISABLED) { 3769 mBatteryStats.noteWifiOff(); 3770 } 3771 } catch (RemoteException e) { 3772 loge("Failed to note battery stats in wifi"); 3773 } 3774 3775 mWifiState.set(wifiState); 3776 3777 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3778 3779 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3780 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3781 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3782 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3783 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3784 } 3785 3786 private void setWifiApState(int wifiApState, int reason) { 3787 final int previousWifiApState = mWifiApState.get(); 3788 3789 try { 3790 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3791 mBatteryStats.noteWifiOn(); 3792 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3793 mBatteryStats.noteWifiOff(); 3794 } 3795 } catch (RemoteException e) { 3796 loge("Failed to note battery stats in wifi"); 3797 } 3798 3799 // Update state 3800 mWifiApState.set(wifiApState); 3801 3802 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3803 3804 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3805 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3806 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3807 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3808 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3809 //only set reason number when softAP start failed 3810 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3811 } 3812 3813 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3814 } 3815 3816 /* 3817 void ageOutScanResults(int age) { 3818 synchronized(mScanResultCache) { 3819 // Trim mScanResults, which prevent WifiStateMachine to return 3820 // obsolete scan results to queriers 3821 long now = System.CurrentTimeMillis(); 3822 for (int i = 0; i < mScanResults.size(); i++) { 3823 ScanResult result = mScanResults.get(i); 3824 if ((result.seen > now || (now - result.seen) > age)) { 3825 mScanResults.remove(i); 3826 } 3827 } 3828 } 3829 }*/ 3830 3831 private static final String IE_STR = "ie="; 3832 private static final String ID_STR = "id="; 3833 private static final String BSSID_STR = "bssid="; 3834 private static final String FREQ_STR = "freq="; 3835 private static final String LEVEL_STR = "level="; 3836 private static final String TSF_STR = "tsf="; 3837 private static final String FLAGS_STR = "flags="; 3838 private static final String SSID_STR = "ssid="; 3839 private static final String DELIMITER_STR = "===="; 3840 private static final String END_STR = "####"; 3841 3842 int emptyScanResultCount = 0; 3843 3844 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3845 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3846 3847 /** 3848 * Format: 3849 * <p/> 3850 * id=1 3851 * bssid=68:7f:76:d7:1a:6e 3852 * freq=2412 3853 * level=-44 3854 * tsf=1344626243700342 3855 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3856 * ssid=zfdy 3857 * ==== 3858 * id=2 3859 * bssid=68:5f:74:d7:1a:6f 3860 * freq=5180 3861 * level=-73 3862 * tsf=1344626243700373 3863 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3864 * ssid=zuby 3865 * ==== 3866 */ 3867 private void setScanResults() { 3868 mNumScanResultsKnown = 0; 3869 mNumScanResultsReturned = 0; 3870 String bssid = ""; 3871 int level = 0; 3872 int freq = 0; 3873 long tsf = 0; 3874 String flags = ""; 3875 WifiSsid wifiSsid = null; 3876 String scanResults; 3877 String tmpResults; 3878 StringBuffer scanResultsBuf = new StringBuffer(); 3879 int sid = 0; 3880 3881 while (true) { 3882 tmpResults = mWifiNative.scanResults(sid); 3883 if (TextUtils.isEmpty(tmpResults)) break; 3884 scanResultsBuf.append(tmpResults); 3885 scanResultsBuf.append("\n"); 3886 String[] lines = tmpResults.split("\n"); 3887 sid = -1; 3888 for (int i = lines.length - 1; i >= 0; i--) { 3889 if (lines[i].startsWith(END_STR)) { 3890 break; 3891 } else if (lines[i].startsWith(ID_STR)) { 3892 try { 3893 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3894 } catch (NumberFormatException e) { 3895 // Nothing to do 3896 } 3897 break; 3898 } 3899 } 3900 if (sid == -1) break; 3901 } 3902 3903 // Age out scan results, we return all scan results found in the last 12 seconds, 3904 // and NOT all scan results since last scan. 3905 // ageOutScanResults(12000); 3906 3907 scanResults = scanResultsBuf.toString(); 3908 if (TextUtils.isEmpty(scanResults)) { 3909 emptyScanResultCount++; 3910 if (emptyScanResultCount > 10) { 3911 // If we got too many empty scan results, the current scan cache is stale, 3912 // hence clear it. 3913 mScanResults = new ArrayList<>(); 3914 } 3915 return; 3916 } 3917 3918 emptyScanResultCount = 0; 3919 3920 mWifiConfigStore.trimANQPCache(false); 3921 3922 // note that all these splits and substrings keep references to the original 3923 // huge string buffer while the amount we really want is generally pretty small 3924 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3925 synchronized (mScanResultCache) { 3926 mScanResults = new ArrayList<>(); 3927 String[] lines = scanResults.split("\n"); 3928 final int bssidStrLen = BSSID_STR.length(); 3929 final int flagLen = FLAGS_STR.length(); 3930 String infoElements = null; 3931 List<String> anqpLines = null; 3932 3933 for (String line : lines) { 3934 if (line.startsWith(BSSID_STR)) { 3935 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3936 } else if (line.startsWith(FREQ_STR)) { 3937 try { 3938 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3939 } catch (NumberFormatException e) { 3940 freq = 0; 3941 } 3942 } else if (line.startsWith(LEVEL_STR)) { 3943 try { 3944 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3945 /* some implementations avoid negative values by adding 256 3946 * so we need to adjust for that here. 3947 */ 3948 if (level > 0) level -= 256; 3949 } catch (NumberFormatException e) { 3950 level = 0; 3951 } 3952 } else if (line.startsWith(TSF_STR)) { 3953 try { 3954 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3955 } catch (NumberFormatException e) { 3956 tsf = 0; 3957 } 3958 } else if (line.startsWith(FLAGS_STR)) { 3959 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3960 } else if (line.startsWith(SSID_STR)) { 3961 wifiSsid = WifiSsid.createFromAsciiEncoded( 3962 line.substring(SSID_STR.length())); 3963 } else if (line.startsWith(IE_STR)) { 3964 infoElements = line; 3965 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3966 if (anqpLines == null) { 3967 anqpLines = new ArrayList<>(); 3968 } 3969 anqpLines.add(line); 3970 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3971 if (bssid != null) { 3972 try { 3973 NetworkDetail networkDetail = 3974 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3975 3976 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3977 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3978 logd(String.format( 3979 "Inconsistent SSID on BSSID '%s': '%s' vs '%s': %s", 3980 bssid, xssid, networkDetail.getSSID(), infoElements)); 3981 } 3982 3983 if (networkDetail.hasInterworking()) { 3984 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3985 } 3986 3987 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3988 if (scanDetail != null) { 3989 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3990 flags, freq, tsf); 3991 } else { 3992 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3993 flags, level, freq, tsf); 3994 mScanResultCache.put(networkDetail, scanDetail); 3995 } 3996 3997 mNumScanResultsReturned++; // Keep track of how many scan results we got 3998 // as part of this scan's processing 3999 mScanResults.add(scanDetail); 4000 } catch (IllegalArgumentException iae) { 4001 Log.d(TAG, "Failed to parse information elements: " + iae); 4002 } 4003 } 4004 bssid = null; 4005 level = 0; 4006 freq = 0; 4007 tsf = 0; 4008 flags = ""; 4009 wifiSsid = null; 4010 infoElements = null; 4011 anqpLines = null; 4012 } 4013 } 4014 } 4015 4016 /* don't attempt autojoin if last connect attempt was just scheduled */ 4017 boolean attemptAutoJoin = 4018 (System.currentTimeMillis() - lastConnectAttemptTimestamp) > CONNECT_TIMEOUT_MSEC; 4019 SupplicantState state = mWifiInfo.getSupplicantState(); 4020 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 4021 if (getCurrentState() == mRoamingState 4022 || getCurrentState() == mObtainingIpState 4023 || getCurrentState() == mScanModeState 4024 || getCurrentState() == mDisconnectingState 4025 || (getCurrentState() == mConnectedState 4026 && !getEnableAutoJoinWhenAssociated()) 4027 || linkDebouncing 4028 || state == SupplicantState.ASSOCIATING 4029 || state == SupplicantState.AUTHENTICATING 4030 || state == SupplicantState.FOUR_WAY_HANDSHAKE 4031 || state == SupplicantState.GROUP_HANDSHAKE 4032 || (/* keep autojoin enabled if user has manually selected a wifi network, 4033 so as to make sure we reliably remain connected to this network */ 4034 mConnectionRequests == 0 && selection == null)) { 4035 // Dont attempt auto-joining again while we are already attempting to join 4036 // and/or obtaining Ip address 4037 attemptAutoJoin = false; 4038 } 4039 if (DBG) { 4040 if (selection == null) { 4041 selection = "<none>"; 4042 } 4043 logd("wifi setScanResults state" + getCurrentState() 4044 + " sup_state=" + state 4045 + " debouncing=" + linkDebouncing 4046 + " mConnectionRequests=" + mConnectionRequests 4047 + " selection=" + selection 4048 + " mNumScanResultsReturned " + mNumScanResultsReturned 4049 + " mScanResults " + mScanResults.size()); 4050 } 4051 if (attemptAutoJoin) { 4052 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 4053 } 4054 // Loose last selected configuration if we have been disconnected for 5 minutes 4055 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 4056 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 4057 } 4058 4059 if (attemptAutoJoin) { 4060 synchronized (mScanResultCache) { 4061 // AutoJoincontroller will directly acces the scan result list and update it with 4062 // ScanResult status 4063 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 4064 } 4065 } 4066 if (linkDebouncing) { 4067 // If debouncing, we dont re-select a SSID or BSSID hence 4068 // there is no need to call the network selection code 4069 // in WifiAutoJoinController, instead, 4070 // just try to reconnect to the same SSID by triggering a roam 4071 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4072 } 4073 } 4074 4075 /* 4076 * Fetch RSSI, linkspeed, and frequency on current connection 4077 */ 4078 private void fetchRssiLinkSpeedAndFrequencyNative() { 4079 int newRssi = -1; 4080 int newLinkSpeed = -1; 4081 int newFrequency = -1; 4082 4083 String signalPoll = mWifiNative.signalPoll(); 4084 4085 if (signalPoll != null) { 4086 String[] lines = signalPoll.split("\n"); 4087 for (String line : lines) { 4088 String[] prop = line.split("="); 4089 if (prop.length < 2) continue; 4090 try { 4091 if (prop[0].equals("RSSI")) { 4092 newRssi = Integer.parseInt(prop[1]); 4093 } else if (prop[0].equals("LINKSPEED")) { 4094 newLinkSpeed = Integer.parseInt(prop[1]); 4095 } else if (prop[0].equals("FREQUENCY")) { 4096 newFrequency = Integer.parseInt(prop[1]); 4097 } 4098 } catch (NumberFormatException e) { 4099 //Ignore, defaults on rssi and linkspeed are assigned 4100 } 4101 } 4102 } 4103 4104 if (PDBG) { 4105 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" 4106 + Integer.toString(newRssi) + " linkspeed=" 4107 + Integer.toString(newLinkSpeed)); 4108 } 4109 4110 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4111 // screen out invalid values 4112 /* some implementations avoid negative values by adding 256 4113 * so we need to adjust for that here. 4114 */ 4115 if (newRssi > 0) newRssi -= 256; 4116 mWifiInfo.setRssi(newRssi); 4117 /* 4118 * Rather then sending the raw RSSI out every time it 4119 * changes, we precalculate the signal level that would 4120 * be displayed in the status bar, and only send the 4121 * broadcast if that much more coarse-grained number 4122 * changes. This cuts down greatly on the number of 4123 * broadcasts, at the cost of not informing others 4124 * interested in RSSI of all the changes in signal 4125 * level. 4126 */ 4127 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4128 if (newSignalLevel != mLastSignalLevel) { 4129 updateCapabilities(getCurrentWifiConfiguration()); 4130 sendRssiChangeBroadcast(newRssi); 4131 } 4132 mLastSignalLevel = newSignalLevel; 4133 } else { 4134 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4135 updateCapabilities(getCurrentWifiConfiguration()); 4136 } 4137 4138 if (newLinkSpeed != -1) { 4139 mWifiInfo.setLinkSpeed(newLinkSpeed); 4140 } 4141 if (newFrequency > 0) { 4142 if (ScanResult.is5GHz(newFrequency)) { 4143 mWifiConnectionStatistics.num5GhzConnected++; 4144 } 4145 if (ScanResult.is24GHz(newFrequency)) { 4146 mWifiConnectionStatistics.num24GhzConnected++; 4147 } 4148 mWifiInfo.setFrequency(newFrequency); 4149 } 4150 mWifiConfigStore.updateConfiguration(mWifiInfo); 4151 } 4152 4153 /** 4154 * Determine if we need to switch network: 4155 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4156 * - match the uregncy of the switch versus the packet usage at the interface 4157 */ 4158 boolean shouldSwitchNetwork(int networkDelta) { 4159 int delta; 4160 if (networkDelta <= 0) { 4161 return false; 4162 } 4163 delta = networkDelta; 4164 if (mWifiInfo != null) { 4165 if (!getEnableAutoJoinWhenAssociated() 4166 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4167 // If AutoJoin while associated is not enabled, 4168 // we should never switch network when already associated 4169 delta = -1000; 4170 } else { 4171 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4172 // TODO: at the interface. We should also discriminate between ucast and mcast, 4173 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4174 // TODO: broadcasts 4175 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4176 delta -= 999; 4177 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4178 delta -= 6; 4179 } 4180 logd("shouldSwitchNetwork " 4181 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4182 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4183 + " delta " + networkDelta + " -> " + delta); 4184 } 4185 } else { 4186 logd("shouldSwitchNetwork " 4187 + " delta " + networkDelta + " -> " + delta); 4188 } 4189 if (delta > 0) { 4190 return true; 4191 } 4192 return false; 4193 } 4194 4195 // Polling has completed, hence we wont have a score anymore 4196 private void cleanWifiScore() { 4197 mWifiInfo.txBadRate = 0; 4198 mWifiInfo.txSuccessRate = 0; 4199 mWifiInfo.txRetriesRate = 0; 4200 mWifiInfo.rxSuccessRate = 0; 4201 } 4202 4203 int mBadLinkspeedcount = 0; 4204 4205 // For debug, provide information about the last scoring operation 4206 String wifiScoringReport = null; 4207 4208 private void calculateWifiScore(WifiLinkLayerStats stats) { 4209 StringBuilder sb = new StringBuilder(); 4210 4211 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4212 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4213 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4214 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4215 < mWifiConfigStore.badLinkSpeed5); 4216 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4217 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4218 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4219 >= mWifiConfigStore.goodLinkSpeed5); 4220 4221 if (isBadLinkspeed) { 4222 if (mBadLinkspeedcount < 6) 4223 mBadLinkspeedcount++; 4224 } else { 4225 if (mBadLinkspeedcount > 0) 4226 mBadLinkspeedcount--; 4227 } 4228 4229 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4230 if (isGoodLinkspeed) sb.append(" gl"); 4231 4232 /** 4233 * We want to make sure that we use the 24GHz RSSI thresholds if 4234 * there are 2.4GHz scan results 4235 * otherwise we end up lowering the score based on 5GHz values 4236 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4237 * We also might unblacklist the configuation based on 2.4GHz 4238 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4239 */ 4240 boolean use24Thresholds = false; 4241 boolean homeNetworkBoost = false; 4242 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4243 ScanDetailCache scanDetailCache = 4244 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4245 if (currentConfiguration != null && scanDetailCache != null) { 4246 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4247 if (currentConfiguration.visibility != null) { 4248 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4249 && currentConfiguration.visibility.rssi24 4250 >= (currentConfiguration.visibility.rssi5 - 2)) { 4251 use24Thresholds = true; 4252 } 4253 } 4254 if (scanDetailCache.size() <= 6 4255 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4256 && currentConfiguration.allowedKeyManagement. 4257 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4258 // A PSK network with less than 6 known BSSIDs 4259 // This is most likely a home network and thus we want to stick to wifi more 4260 homeNetworkBoost = true; 4261 } 4262 } 4263 if (homeNetworkBoost) sb.append(" hn"); 4264 if (use24Thresholds) sb.append(" u24"); 4265 4266 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4267 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4268 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4269 4270 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4271 4272 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4273 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4274 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4275 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4276 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4277 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4278 4279 if (isBadRSSI) sb.append(" br"); 4280 if (isLowRSSI) sb.append(" lr"); 4281 if (isHighRSSI) sb.append(" hr"); 4282 4283 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4284 if (currentConfiguration != null && 4285 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4286 if (isBadRSSI) { 4287 currentConfiguration.numTicksAtBadRSSI++; 4288 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4289 // We remained associated for a compound amount of time while passing 4290 // traffic, hence loose the corresponding user triggered disabled stats 4291 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4292 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4293 } 4294 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4295 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4296 } 4297 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4298 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4299 } 4300 currentConfiguration.numTicksAtBadRSSI = 0; 4301 } 4302 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4303 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4304 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4305 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4306 score = score - 5; 4307 penalizedDueToUserTriggeredDisconnect = 1; 4308 sb.append(" p1"); 4309 } 4310 } else if (isLowRSSI) { 4311 currentConfiguration.numTicksAtLowRSSI++; 4312 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4313 // We remained associated for a compound amount of time while passing 4314 // traffic, hence loose the corresponding user triggered disabled stats 4315 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4316 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4317 } 4318 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4319 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4320 } 4321 currentConfiguration.numTicksAtLowRSSI = 0; 4322 } 4323 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4324 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4325 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4326 score = score - 5; 4327 penalizedDueToUserTriggeredDisconnect = 2; 4328 sb.append(" p2"); 4329 } 4330 } else if (!isHighRSSI) { 4331 currentConfiguration.numTicksAtNotHighRSSI++; 4332 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4333 // We remained associated for a compound amount of time while passing 4334 // traffic, hence loose the corresponding user triggered disabled stats 4335 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4336 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4337 } 4338 currentConfiguration.numTicksAtNotHighRSSI = 0; 4339 } 4340 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4341 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4342 score = score - 5; 4343 penalizedDueToUserTriggeredDisconnect = 3; 4344 sb.append(" p3"); 4345 } 4346 } 4347 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4348 currentConfiguration.numTicksAtLowRSSI, 4349 currentConfiguration.numTicksAtNotHighRSSI)); 4350 } 4351 4352 if (PDBG) { 4353 String rssiStatus = ""; 4354 if (isBadRSSI) rssiStatus += " badRSSI "; 4355 else if (isHighRSSI) rssiStatus += " highRSSI "; 4356 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4357 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4358 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4359 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4360 + " score=" + Integer.toString(mWifiInfo.score) 4361 + rssiStatus 4362 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4363 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4364 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4365 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4366 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4367 } 4368 4369 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4370 && (isBadRSSI || isLowRSSI)) { 4371 // Link is stuck 4372 if (mWifiInfo.linkStuckCount < 5) 4373 mWifiInfo.linkStuckCount += 1; 4374 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4375 if (PDBG) logd(" bad link -> stuck count =" 4376 + Integer.toString(mWifiInfo.linkStuckCount)); 4377 } else if (mWifiInfo.txBadRate < 0.3) { 4378 if (mWifiInfo.linkStuckCount > 0) 4379 mWifiInfo.linkStuckCount -= 1; 4380 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4381 if (PDBG) logd(" good link -> stuck count =" 4382 + Integer.toString(mWifiInfo.linkStuckCount)); 4383 } 4384 4385 sb.append(String.format(" [%d", score)); 4386 4387 if (mWifiInfo.linkStuckCount > 1) { 4388 // Once link gets stuck for more than 3 seconds, start reducing the score 4389 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4390 } 4391 sb.append(String.format(",%d", score)); 4392 4393 if (isBadLinkspeed) { 4394 score -= 4; 4395 if (PDBG) { 4396 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4397 + " score=" + Integer.toString(score)); 4398 } 4399 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4400 score += 4; // So as bad rssi alone dont kill us 4401 } 4402 sb.append(String.format(",%d", score)); 4403 4404 if (isBadRSSI) { 4405 if (mWifiInfo.badRssiCount < 7) 4406 mWifiInfo.badRssiCount += 1; 4407 } else if (isLowRSSI) { 4408 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4409 if (mWifiInfo.badRssiCount > 0) { 4410 // Decrement bad Rssi count 4411 mWifiInfo.badRssiCount -= 1; 4412 } 4413 } else { 4414 mWifiInfo.badRssiCount = 0; 4415 mWifiInfo.lowRssiCount = 0; 4416 } 4417 4418 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4419 sb.append(String.format(",%d", score)); 4420 4421 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4422 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4423 + " --> score " + Integer.toString(score)); 4424 4425 4426 if (isHighRSSI) { 4427 score += 5; 4428 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4429 } 4430 sb.append(String.format(",%d]", score)); 4431 4432 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4433 4434 //sanitize boundaries 4435 if (score > NetworkAgent.WIFI_BASE_SCORE) 4436 score = NetworkAgent.WIFI_BASE_SCORE; 4437 if (score < 0) 4438 score = 0; 4439 4440 //report score 4441 if (score != mWifiInfo.score) { 4442 if (DBG) { 4443 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4444 } 4445 mWifiInfo.score = score; 4446 if (mNetworkAgent != null) { 4447 mNetworkAgent.sendNetworkScore(score); 4448 } 4449 } 4450 wifiScoringReport = sb.toString(); 4451 } 4452 4453 public double getTxPacketRate() { 4454 if (mWifiInfo != null) { 4455 return mWifiInfo.txSuccessRate; 4456 } 4457 return -1; 4458 } 4459 4460 public double getRxPacketRate() { 4461 if (mWifiInfo != null) { 4462 return mWifiInfo.rxSuccessRate; 4463 } 4464 return -1; 4465 } 4466 4467 /** 4468 * Fetch TX packet counters on current connection 4469 */ 4470 private void fetchPktcntNative(RssiPacketCountInfo info) { 4471 String pktcntPoll = mWifiNative.pktcntPoll(); 4472 4473 if (pktcntPoll != null) { 4474 String[] lines = pktcntPoll.split("\n"); 4475 for (String line : lines) { 4476 String[] prop = line.split("="); 4477 if (prop.length < 2) continue; 4478 try { 4479 if (prop[0].equals("TXGOOD")) { 4480 info.txgood = Integer.parseInt(prop[1]); 4481 } else if (prop[0].equals("TXBAD")) { 4482 info.txbad = Integer.parseInt(prop[1]); 4483 } 4484 } catch (NumberFormatException e) { 4485 // Ignore 4486 } 4487 } 4488 } 4489 } 4490 4491 private boolean clearIPv4Address(String iface) { 4492 try { 4493 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4494 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4495 mNwService.setInterfaceConfig(iface, ifcg); 4496 return true; 4497 } catch (RemoteException e) { 4498 return false; 4499 } 4500 } 4501 4502 private boolean isProvisioned(LinkProperties lp) { 4503 return lp.isProvisioned() || 4504 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4505 } 4506 4507 /** 4508 * Creates a new LinkProperties object by merging information from various sources. 4509 * <p/> 4510 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4511 * netlink, static configuration, ...). When one of these sources of information has updated 4512 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4513 * information that came from other sources. Instead, when one of those sources has new 4514 * information, we update the object that tracks the information from that source and then 4515 * call this method to integrate the change into a new LinkProperties object for subsequent 4516 * comparison with mLinkProperties. 4517 * <p/> 4518 * The information used to build LinkProperties is currently obtained as follows: 4519 * - Interface name: set in the constructor. 4520 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4521 * - IPv4 routes, DNS servers, and domains: DHCP. 4522 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4523 * - HTTP proxy: the wifi config store. 4524 */ 4525 private LinkProperties makeLinkProperties() { 4526 LinkProperties newLp = new LinkProperties(); 4527 4528 // Interface name, proxy, and TCP buffer sizes are locally configured. 4529 newLp.setInterfaceName(mInterfaceName); 4530 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4531 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4532 newLp.setTcpBufferSizes(mTcpBufferSizes); 4533 } 4534 4535 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4536 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4537 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4538 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4539 newLp.addRoute(route); 4540 } 4541 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4542 // Only add likely reachable DNS servers. 4543 // TODO: investigate deleting this. 4544 if (newLp.isReachable(dns)) { 4545 newLp.addDnsServer(dns); 4546 } 4547 } 4548 4549 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4550 synchronized (mDhcpResultsLock) { 4551 // Even when we're using static configuration, we don't need to look at the config 4552 // store, because static IP configuration also populates mDhcpResults. 4553 if ((mDhcpResults != null)) { 4554 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4555 newLp.addRoute(route); 4556 } 4557 for (InetAddress dns : mDhcpResults.dnsServers) { 4558 // Only add likely reachable DNS servers. 4559 // TODO: investigate deleting this. 4560 if (newLp.isReachable(dns)) { 4561 newLp.addDnsServer(dns); 4562 } 4563 } 4564 newLp.setDomains(mDhcpResults.domains); 4565 } 4566 } 4567 4568 return newLp; 4569 } 4570 4571 private void updateLinkProperties(int reason) { 4572 LinkProperties newLp = makeLinkProperties(); 4573 4574 final boolean linkChanged = !newLp.equals(mLinkProperties); 4575 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4576 final boolean isProvisioned = isProvisioned(newLp); 4577 // TODO: Teach LinkProperties how to understand static assignment 4578 // and simplify all this provisioning change detection logic by 4579 // unifying it under LinkProperties.compareProvisioning(). 4580 final boolean lostProvisioning = 4581 (wasProvisioned && !isProvisioned) || 4582 (mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address()) || 4583 (mLinkProperties.isIPv6Provisioned() && !newLp.isIPv6Provisioned()); 4584 final DetailedState detailedState = getNetworkDetailedState(); 4585 4586 if (linkChanged) { 4587 if (DBG) { 4588 log("Link configuration changed for netId: " + mLastNetworkId 4589 + " old: " + mLinkProperties + " new: " + newLp); 4590 } 4591 mLinkProperties = newLp; 4592 if (mIpReachabilityMonitor != null) { 4593 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4594 } 4595 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4596 } 4597 4598 if (lostProvisioning) { 4599 log("Lost IP layer provisioning!" + 4600 " was: " + mLinkProperties + 4601 " now: " + newLp); 4602 } 4603 4604 if (DBG) { 4605 StringBuilder sb = new StringBuilder(); 4606 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4607 sb.append(" state: " + detailedState); 4608 sb.append(" reason: " + smToString(reason)); 4609 4610 if (mLinkProperties != null) { 4611 if (mLinkProperties.hasIPv4Address()) { 4612 sb.append(" v4"); 4613 } 4614 if (mLinkProperties.hasGlobalIPv6Address()) { 4615 sb.append(" v6"); 4616 } 4617 if (mLinkProperties.hasIPv4DefaultRoute()) { 4618 sb.append(" v4r"); 4619 } 4620 if (mLinkProperties.hasIPv6DefaultRoute()) { 4621 sb.append(" v6r"); 4622 } 4623 if (mLinkProperties.hasIPv4DnsServer()) { 4624 sb.append(" v4dns"); 4625 } 4626 if (mLinkProperties.hasIPv6DnsServer()) { 4627 sb.append(" v6dns"); 4628 } 4629 if (isProvisioned) { 4630 sb.append(" isprov"); 4631 } 4632 } 4633 logd(sb.toString()); 4634 } 4635 4636 // If we just configured or lost IP configuration, do the needful. 4637 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4638 // here because those should only be called if we're attempting to connect or already 4639 // connected, whereas updateLinkProperties can be called at any time. 4640 switch (reason) { 4641 case DhcpStateMachine.DHCP_SUCCESS: 4642 case CMD_STATIC_IP_SUCCESS: 4643 // IPv4 provisioning succeded. Advance to connected state. 4644 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4645 if (!isProvisioned) { 4646 // Can never happen unless DHCP reports success but isProvisioned thinks the 4647 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4648 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4649 // TODO: disconnect here instead. If our configuration is not usable, there's no 4650 // point in staying connected, and if mLinkProperties is out of sync with 4651 // reality, that will cause problems in the future. 4652 logd("IPv4 config succeeded, but not provisioned"); 4653 } 4654 break; 4655 4656 case DhcpStateMachine.DHCP_FAILURE: 4657 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4658 // give up and disconnect. 4659 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4660 if (!isProvisioned || lostProvisioning) { 4661 sendMessage(CMD_IP_CONFIGURATION_LOST); 4662 } else { 4663 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4664 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4665 4666 // To be sure we don't get stuck with a non-working network if all we had is 4667 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4668 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4669 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4670 // necessary for provisioning, its deletion will cause us to disconnect. 4671 // 4672 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4673 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4674 // not return true if we're using DHCP and don't have an IPv4 default route. So 4675 // for now it's only here for extra redundancy. However, it will increase 4676 // robustness if we move to getting IPv4 routes from netlink as well. 4677 loge("DHCP failure: provisioned, clearing IPv4 address."); 4678 if (!clearIPv4Address(mInterfaceName)) { 4679 sendMessage(CMD_IP_CONFIGURATION_LOST); 4680 } 4681 } 4682 break; 4683 4684 case CMD_STATIC_IP_FAILURE: 4685 // Static configuration was invalid, or an error occurred in applying it. Give up. 4686 sendMessage(CMD_IP_CONFIGURATION_LOST); 4687 break; 4688 4689 case CMD_UPDATE_LINKPROPERTIES: 4690 // IP addresses, DNS servers, etc. changed. Act accordingly. 4691 if (lostProvisioning) { 4692 // We no longer have a usable network configuration. Disconnect. 4693 sendMessage(CMD_IP_CONFIGURATION_LOST); 4694 } else if (!wasProvisioned && isProvisioned) { 4695 // We have a usable IPv6-only config. Advance to connected state. 4696 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4697 } 4698 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4699 // If anything has changed and we're already connected, send out a notification. 4700 sendLinkConfigurationChangedBroadcast(); 4701 } 4702 break; 4703 } 4704 } 4705 4706 /** 4707 * Clears all our link properties. 4708 */ 4709 private void clearLinkProperties() { 4710 // Clear the link properties obtained from DHCP and netlink. 4711 synchronized (mDhcpResultsLock) { 4712 if (mDhcpResults != null) { 4713 mDhcpResults.clear(); 4714 } 4715 } 4716 mNetlinkTracker.clearLinkProperties(); 4717 if (mIpReachabilityMonitor != null) { 4718 mIpReachabilityMonitor.clearLinkProperties(); 4719 } 4720 4721 // Now clear the merged link properties. 4722 mLinkProperties.clear(); 4723 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4724 } 4725 4726 /** 4727 * try to update default route MAC address. 4728 */ 4729 private String updateDefaultRouteMacAddress(int timeout) { 4730 String address = null; 4731 for (RouteInfo route : mLinkProperties.getRoutes()) { 4732 if (route.isDefaultRoute() && route.hasGateway()) { 4733 InetAddress gateway = route.getGateway(); 4734 if (gateway instanceof Inet4Address) { 4735 if (PDBG) { 4736 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4737 + gateway.getHostAddress()); 4738 } 4739 address = macAddressFromRoute(gateway.getHostAddress()); 4740 /* The gateway's MAC address is known */ 4741 if ((address == null) && (timeout > 0)) { 4742 boolean reachable = false; 4743 try { 4744 reachable = gateway.isReachable(timeout); 4745 } catch (Exception e) { 4746 loge("updateDefaultRouteMacAddress exception reaching :" 4747 + gateway.getHostAddress()); 4748 4749 } finally { 4750 if (reachable == true) { 4751 4752 address = macAddressFromRoute(gateway.getHostAddress()); 4753 if (PDBG) { 4754 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4755 + gateway.getHostAddress() + " found " + address); 4756 } 4757 } 4758 } 4759 } 4760 if (address != null) { 4761 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4762 } 4763 } 4764 } 4765 } 4766 return address; 4767 } 4768 4769 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4770 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4771 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4772 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4773 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4774 } 4775 4776 private void sendRssiChangeBroadcast(final int newRssi) { 4777 try { 4778 mBatteryStats.noteWifiRssiChanged(newRssi); 4779 } catch (RemoteException e) { 4780 // Won't happen. 4781 } 4782 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4783 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4784 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4785 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4786 } 4787 4788 private void sendNetworkStateChangeBroadcast(String bssid) { 4789 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4790 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4791 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4792 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4793 if (bssid != null) 4794 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4795 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4796 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4797 // We no longer report MAC address to third-parties and our code does 4798 // not rely on this broadcast, so just send the default MAC address. 4799 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4800 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4801 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4802 } 4803 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4804 } 4805 4806 private WifiInfo getWiFiInfoForUid(int uid) { 4807 if (Binder.getCallingUid() == Process.myUid()) { 4808 return mWifiInfo; 4809 } 4810 4811 WifiInfo result = new WifiInfo(mWifiInfo); 4812 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4813 4814 IBinder binder = ServiceManager.getService("package"); 4815 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4816 4817 try { 4818 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4819 uid) == PackageManager.PERMISSION_GRANTED) { 4820 result.setMacAddress(mWifiInfo.getMacAddress()); 4821 } 4822 } catch (RemoteException e) { 4823 Log.e(TAG, "Error checking receiver permission", e); 4824 } 4825 4826 return result; 4827 } 4828 4829 private void sendLinkConfigurationChangedBroadcast() { 4830 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4831 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4832 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4833 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4834 } 4835 4836 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4837 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4838 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4839 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4840 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4841 } 4842 4843 /** 4844 * Record the detailed state of a network. 4845 * 4846 * @param state the new {@code DetailedState} 4847 */ 4848 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4849 boolean hidden = false; 4850 4851 if (linkDebouncing || isRoaming()) { 4852 // There is generally a confusion in the system about colluding 4853 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4854 // which leads to multiple confusion. 4855 // 4856 // If link is de-bouncing or roaming, we already have an IP address 4857 // as well we were connected and are doing L2 cycles of 4858 // reconnecting or renewing IP address to check that we still have it 4859 // This L2 link flapping should ne be reflected into the Network state 4860 // which is the state of the WiFi Network visible to Layer 3 and applications 4861 // Note that once debouncing and roaming are completed, we will 4862 // set the Network state to where it should be, or leave it as unchanged 4863 // 4864 hidden = true; 4865 } 4866 if (DBG) { 4867 log("setDetailed state, old =" 4868 + mNetworkInfo.getDetailedState() + " and new state=" + state 4869 + " hidden=" + hidden); 4870 } 4871 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4872 // Always indicate that SSID has changed 4873 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4874 if (DBG) { 4875 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4876 } 4877 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4878 sendNetworkStateChangeBroadcast(null); 4879 } 4880 } 4881 if (hidden == true) { 4882 return false; 4883 } 4884 4885 if (state != mNetworkInfo.getDetailedState()) { 4886 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4887 if (mNetworkAgent != null) { 4888 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4889 } 4890 sendNetworkStateChangeBroadcast(null); 4891 return true; 4892 } 4893 return false; 4894 } 4895 4896 private DetailedState getNetworkDetailedState() { 4897 return mNetworkInfo.getDetailedState(); 4898 } 4899 4900 private SupplicantState handleSupplicantStateChange(Message message) { 4901 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4902 SupplicantState state = stateChangeResult.state; 4903 // Supplicant state change 4904 // [31-13] Reserved for future use 4905 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4906 // 50023 supplicant_state_changed (custom|1|5) 4907 mWifiInfo.setSupplicantState(state); 4908 // Network id is only valid when we start connecting 4909 if (SupplicantState.isConnecting(state)) { 4910 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4911 } else { 4912 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4913 } 4914 4915 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4916 4917 if (mWhiteListedSsids != null 4918 && mWhiteListedSsids.length > 0 4919 && stateChangeResult.wifiSsid != null) { 4920 String SSID = stateChangeResult.wifiSsid.toString(); 4921 String currentSSID = mWifiInfo.getSSID(); 4922 if (SSID != null 4923 && currentSSID != null 4924 && !SSID.equals(WifiSsid.NONE)) { 4925 // Remove quote before comparing 4926 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4927 && SSID.charAt(SSID.length() - 1) == '"') 4928 { 4929 SSID = SSID.substring(1, SSID.length() - 1); 4930 } 4931 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4932 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4933 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4934 } 4935 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4936 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4937 targetWificonfiguration 4938 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4939 transitionTo(mRoamingState); 4940 } 4941 } 4942 } 4943 4944 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4945 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4946 4947 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4948 4949 return state; 4950 } 4951 4952 /** 4953 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4954 * using the interface, stopping DHCP & disabling interface 4955 */ 4956 private void handleNetworkDisconnect() { 4957 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4958 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4959 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4960 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4961 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4962 4963 stopRssiMonitoringOffload(); 4964 4965 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4966 4967 stopDhcp(); 4968 4969 try { 4970 mNwService.clearInterfaceAddresses(mInterfaceName); 4971 mNwService.disableIpv6(mInterfaceName); 4972 } catch (Exception e) { 4973 loge("Failed to clear addresses or disable ipv6" + e); 4974 } 4975 4976 /* Reset data structures */ 4977 mBadLinkspeedcount = 0; 4978 mWifiInfo.reset(); 4979 linkDebouncing = false; 4980 /* Reset roaming parameters */ 4981 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4982 4983 /** 4984 * fullBandConnectedTimeIntervalMilli: 4985 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4986 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4987 * Initialize to sane value = 20 seconds 4988 */ 4989 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4990 4991 setNetworkDetailedState(DetailedState.DISCONNECTED); 4992 if (mNetworkAgent != null) { 4993 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4994 mNetworkAgent = null; 4995 } 4996 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4997 4998 /* Clear network properties */ 4999 clearLinkProperties(); 5000 5001 /* Cend event to CM & network change broadcast */ 5002 sendNetworkStateChangeBroadcast(mLastBssid); 5003 5004 /* Cancel auto roam requests */ 5005 autoRoamSetBSSID(mLastNetworkId, "any"); 5006 5007 mLastBssid = null; 5008 registerDisconnected(); 5009 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5010 } 5011 5012 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 5013 /* Socket connection can be lost when we do a graceful shutdown 5014 * or when the driver is hung. Ensure supplicant is stopped here. 5015 */ 5016 if (killSupplicant) { 5017 mWifiMonitor.killSupplicant(mP2pSupported); 5018 } 5019 mWifiNative.closeSupplicantConnection(); 5020 sendSupplicantConnectionChangedBroadcast(false); 5021 setWifiState(WIFI_STATE_DISABLED); 5022 } 5023 5024 void handlePreDhcpSetup() { 5025 mDhcpActive = true; 5026 if (!mBluetoothConnectionActive) { 5027 /* 5028 * There are problems setting the Wi-Fi driver's power 5029 * mode to active when bluetooth coexistence mode is 5030 * enabled or sense. 5031 * <p> 5032 * We set Wi-Fi to active mode when 5033 * obtaining an IP address because we've found 5034 * compatibility issues with some routers with low power 5035 * mode. 5036 * <p> 5037 * In order for this active power mode to properly be set, 5038 * we disable coexistence mode until we're done with 5039 * obtaining an IP address. One exception is if we 5040 * are currently connected to a headset, since disabling 5041 * coexistence would interrupt that connection. 5042 */ 5043 // Disable the coexistence mode 5044 mWifiNative.setBluetoothCoexistenceMode( 5045 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 5046 } 5047 5048 // Disable power save and suspend optimizations during DHCP 5049 // Note: The order here is important for now. Brcm driver changes 5050 // power settings when we control suspend mode optimizations. 5051 // TODO: Remove this comment when the driver is fixed. 5052 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 5053 mWifiNative.setPowerSave(false); 5054 5055 // Update link layer stats 5056 getWifiLinkLayerStats(false); 5057 5058 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 5059 Message msg = new Message(); 5060 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 5061 msg.arg1 = WifiP2pServiceImpl.ENABLED; 5062 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 5063 msg.obj = mDhcpStateMachine; 5064 mWifiP2pChannel.sendMessage(msg); 5065 } 5066 5067 5068 private boolean useLegacyDhcpClient() { 5069 return Settings.Global.getInt( 5070 mContext.getContentResolver(), 5071 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 5072 } 5073 5074 private void maybeInitDhcpStateMachine() { 5075 if (mDhcpStateMachine == null) { 5076 if (useLegacyDhcpClient()) { 5077 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 5078 mContext, WifiStateMachine.this, mInterfaceName); 5079 } else { 5080 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 5081 mContext, WifiStateMachine.this, mInterfaceName); 5082 } 5083 } 5084 } 5085 5086 void startDhcp() { 5087 maybeInitDhcpStateMachine(); 5088 mDhcpStateMachine.registerForPreDhcpNotification(); 5089 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 5090 } 5091 5092 void renewDhcp() { 5093 maybeInitDhcpStateMachine(); 5094 mDhcpStateMachine.registerForPreDhcpNotification(); 5095 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 5096 } 5097 5098 void stopDhcp() { 5099 if (mDhcpStateMachine != null) { 5100 /* In case we were in middle of DHCP operation restore back powermode */ 5101 handlePostDhcpSetup(); 5102 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 5103 } 5104 } 5105 5106 void handlePostDhcpSetup() { 5107 /* Restore power save and suspend optimizations */ 5108 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 5109 mWifiNative.setPowerSave(true); 5110 5111 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 5112 5113 // Set the coexistence mode back to its default value 5114 mWifiNative.setBluetoothCoexistenceMode( 5115 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 5116 5117 mDhcpActive = false; 5118 } 5119 5120 void connectScanningService() { 5121 5122 if (mWifiScanner == null) { 5123 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 5124 } 5125 } 5126 5127 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 5128 5129 if (PDBG) { 5130 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 5131 logd("link address " + dhcpResults.ipAddress); 5132 } 5133 5134 Inet4Address addr; 5135 synchronized (mDhcpResultsLock) { 5136 mDhcpResults = dhcpResults; 5137 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5138 } 5139 5140 if (isRoaming()) { 5141 int previousAddress = mWifiInfo.getIpAddress(); 5142 int newAddress = NetworkUtils.inetAddressToInt(addr); 5143 if (previousAddress != newAddress) { 5144 logd("handleIPv4Success, roaming and address changed" + 5145 mWifiInfo + " got: " + addr); 5146 } 5147 } 5148 mWifiInfo.setInetAddress(addr); 5149 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5150 updateLinkProperties(reason); 5151 } 5152 5153 private void handleSuccessfulIpConfiguration() { 5154 mLastSignalLevel = -1; // Force update of signal strength 5155 WifiConfiguration c = getCurrentWifiConfiguration(); 5156 if (c != null) { 5157 // Reset IP failure tracking 5158 c.numConnectionFailures = 0; 5159 5160 // Tell the framework whether the newly connected network is trusted or untrusted. 5161 updateCapabilities(c); 5162 } 5163 if (c != null) { 5164 ScanResult result = getCurrentScanResult(); 5165 if (result == null) { 5166 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5167 c.configKey()); 5168 } else { 5169 // Clear the per BSSID failure count 5170 result.numIpConfigFailures = 0; 5171 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5172 // any BSSID, even though it may already have a non zero ip failure count, 5173 // this will typically happen if the user walks away and come back to his arrea 5174 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5175 // in supplicant for a couple of hours or a day 5176 mWifiConfigStore.clearBssidBlacklist(); 5177 } 5178 } 5179 } 5180 5181 private void handleIPv4Failure(int reason) { 5182 synchronized(mDhcpResultsLock) { 5183 if (mDhcpResults != null) { 5184 mDhcpResults.clear(); 5185 } 5186 } 5187 if (PDBG) { 5188 logd("handleIPv4Failure"); 5189 } 5190 updateLinkProperties(reason); 5191 } 5192 5193 private void handleIpConfigurationLost() { 5194 mWifiInfo.setInetAddress(null); 5195 mWifiInfo.setMeteredHint(false); 5196 5197 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5198 "DHCP FAILURE", mWifiInfo.getBSSID()); 5199 5200 /* DHCP times out after about 30 seconds, we do a 5201 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5202 */ 5203 mWifiNative.disconnect(); 5204 } 5205 5206 // TODO: De-duplicated this and handleIpConfigurationLost(). 5207 private void handleIpReachabilityLost() { 5208 // No need to be told about any additional neighbors that might also 5209 // become unreachable--quiet them now while we start disconnecting. 5210 if (mIpReachabilityMonitor != null) { 5211 mIpReachabilityMonitor.clearLinkProperties(); 5212 } 5213 5214 mWifiInfo.setInetAddress(null); 5215 mWifiInfo.setMeteredHint(false); 5216 5217 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5218 5219 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5220 mWifiNative.disconnect(); 5221 } 5222 5223 private int convertFrequencyToChannelNumber(int frequency) { 5224 if (frequency >= 2412 && frequency <= 2484) { 5225 return (frequency -2412) / 5 + 1; 5226 } else if (frequency >= 5170 && frequency <=5825) { 5227 //DFS is included 5228 return (frequency -5170) / 5 + 34; 5229 } else { 5230 return 0; 5231 } 5232 } 5233 5234 private int chooseApChannel(int apBand) { 5235 int apChannel; 5236 int[] channel; 5237 5238 if (apBand == 0) { 5239 if (mWifiApConfigStore.allowed2GChannel == null || 5240 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5241 //most safe channel to use 5242 if(DBG) { 5243 Log.d(TAG, "No specified 2G allowed channel list"); 5244 } 5245 apChannel = 6; 5246 } else { 5247 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5248 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5249 } 5250 } else { 5251 //5G without DFS 5252 channel = mWifiNative.getChannelsForBand(2); 5253 if (channel != null && channel.length > 0) { 5254 apChannel = channel[mRandom.nextInt(channel.length)]; 5255 apChannel = convertFrequencyToChannelNumber(apChannel); 5256 } else { 5257 Log.e(TAG, "SoftAp do not get available channel list"); 5258 apChannel = 0; 5259 } 5260 } 5261 5262 if(DBG) { 5263 Log.d(TAG, "SoftAp set on channel " + apChannel); 5264 } 5265 5266 return apChannel; 5267 } 5268 5269 /* SoftAP configuration */ 5270 private boolean enableSoftAp() { 5271 if (WifiNative.getInterfaces() != 0) { 5272 if (!mWifiNative.toggleInterface(0)) { 5273 if (DBG) Log.e(TAG, "toggleInterface failed"); 5274 return false; 5275 } 5276 } else { 5277 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5278 } 5279 5280 try { 5281 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5282 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5283 } catch (Exception e) { 5284 Log.e(TAG, "Failed to reload AP firmware " + e); 5285 } 5286 5287 if (WifiNative.startHal() == false) { 5288 /* starting HAL is optional */ 5289 Log.e(TAG, "Failed to start HAL"); 5290 } 5291 return true; 5292 } 5293 5294 /* Current design is to not set the config on a running hostapd but instead 5295 * stop and start tethering when user changes config on a running access point 5296 * 5297 * TODO: Add control channel setup through hostapd that allows changing config 5298 * on a running daemon 5299 */ 5300 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5301 // set channel 5302 final WifiConfiguration config = new WifiConfiguration(configuration); 5303 5304 if (DBG) { 5305 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5306 } 5307 5308 //We need HAL support to set country code and get available channel list, if HAL is 5309 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5310 if (mWifiNative.isHalStarted()) { 5311 //set country code through HAL Here 5312 if (mSetCountryCode != null) { 5313 if (!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 5314 if (config.apBand != 0) { 5315 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5316 //countrycode is mandatory for 5GHz 5317 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5318 return; 5319 } 5320 } 5321 } else { 5322 if (config.apBand != 0) { 5323 //countrycode is mandatory for 5GHz 5324 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5325 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5326 return; 5327 } 5328 } 5329 5330 if (config.apChannel == 0) { 5331 config.apChannel = chooseApChannel(config.apBand); 5332 if (config.apChannel == 0) { 5333 if(mWifiNative.isGetChannelsForBandSupported()) { 5334 //fail to get available channel 5335 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5336 return; 5337 } else { 5338 //for some old device, wifiHal may not be supportedget valid channels are not 5339 //supported 5340 config.apBand = 0; 5341 config.apChannel = 6; 5342 } 5343 } 5344 } 5345 } else { 5346 //for some old device, wifiHal may not be supported 5347 config.apBand = 0; 5348 config.apChannel = 6; 5349 } 5350 // Start hostapd on a separate thread 5351 new Thread(new Runnable() { 5352 public void run() { 5353 try { 5354 mNwService.startAccessPoint(config, mInterfaceName); 5355 } catch (Exception e) { 5356 loge("Exception in softap start " + e); 5357 try { 5358 mNwService.stopAccessPoint(mInterfaceName); 5359 mNwService.startAccessPoint(config, mInterfaceName); 5360 } catch (Exception e1) { 5361 loge("Exception in softap re-start " + e1); 5362 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5363 return; 5364 } 5365 } 5366 if (DBG) log("Soft AP start successful"); 5367 sendMessage(CMD_START_AP_SUCCESS); 5368 } 5369 }).start(); 5370 } 5371 5372 private byte[] macAddressFromString(String macString) { 5373 String[] macBytes = macString.split(":"); 5374 if (macBytes.length != 6) { 5375 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5376 } 5377 byte[] mac = new byte[6]; 5378 for (int i = 0; i < macBytes.length; i++) { 5379 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5380 mac[i] = hexVal.byteValue(); 5381 } 5382 return mac; 5383 } 5384 5385 /* 5386 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5387 * so as to record MAC address of default gateway. 5388 **/ 5389 private String macAddressFromRoute(String ipAddress) { 5390 String macAddress = null; 5391 BufferedReader reader = null; 5392 try { 5393 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5394 5395 // Skip over the line bearing colum titles 5396 String line = reader.readLine(); 5397 5398 while ((line = reader.readLine()) != null) { 5399 String[] tokens = line.split("[ ]+"); 5400 if (tokens.length < 6) { 5401 continue; 5402 } 5403 5404 // ARP column format is 5405 // Address HWType HWAddress Flags Mask IFace 5406 String ip = tokens[0]; 5407 String mac = tokens[3]; 5408 5409 if (ipAddress.equals(ip)) { 5410 macAddress = mac; 5411 break; 5412 } 5413 } 5414 5415 if (macAddress == null) { 5416 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5417 "/proc/net/arp"); 5418 } 5419 5420 } catch (FileNotFoundException e) { 5421 loge("Could not open /proc/net/arp to lookup mac address"); 5422 } catch (IOException e) { 5423 loge("Could not read /proc/net/arp to lookup mac address"); 5424 } finally { 5425 try { 5426 if (reader != null) { 5427 reader.close(); 5428 } 5429 } catch (IOException e) { 5430 // Do nothing 5431 } 5432 } 5433 return macAddress; 5434 5435 } 5436 5437 private class WifiNetworkFactory extends NetworkFactory { 5438 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5439 super(l, c, TAG, f); 5440 } 5441 5442 @Override 5443 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5444 ++mConnectionRequests; 5445 } 5446 5447 @Override 5448 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5449 --mConnectionRequests; 5450 } 5451 5452 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5453 pw.println("mConnectionRequests " + mConnectionRequests); 5454 } 5455 5456 } 5457 5458 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5459 private int mUntrustedReqCount; 5460 5461 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5462 super(l, c, tag, f); 5463 } 5464 5465 @Override 5466 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5467 if (!networkRequest.networkCapabilities.hasCapability( 5468 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5469 if (++mUntrustedReqCount == 1) { 5470 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5471 } 5472 } 5473 } 5474 5475 @Override 5476 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5477 if (!networkRequest.networkCapabilities.hasCapability( 5478 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5479 if (--mUntrustedReqCount == 0) { 5480 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5481 } 5482 } 5483 } 5484 5485 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5486 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5487 } 5488 } 5489 5490 void maybeRegisterNetworkFactory() { 5491 if (mNetworkFactory == null) { 5492 checkAndSetConnectivityInstance(); 5493 if (mCm != null) { 5494 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5495 NETWORKTYPE, mNetworkCapabilitiesFilter); 5496 mNetworkFactory.setScoreFilter(60); 5497 mNetworkFactory.register(); 5498 5499 // We can't filter untrusted network in the capabilities filter because a trusted 5500 // network would still satisfy a request that accepts untrusted ones. 5501 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5502 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5503 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5504 mUntrustedNetworkFactory.register(); 5505 } 5506 } 5507 } 5508 5509 /******************************************************** 5510 * HSM states 5511 *******************************************************/ 5512 5513 class DefaultState extends State { 5514 @Override 5515 public boolean processMessage(Message message) { 5516 logStateAndMessage(message, getClass().getSimpleName()); 5517 5518 switch (message.what) { 5519 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5520 AsyncChannel ac = (AsyncChannel) message.obj; 5521 if (ac == mWifiP2pChannel) { 5522 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5523 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5524 } else { 5525 loge("WifiP2pService connection failure, error=" + message.arg1); 5526 } 5527 } else { 5528 loge("got HALF_CONNECTED for unknown channel"); 5529 } 5530 break; 5531 } 5532 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5533 AsyncChannel ac = (AsyncChannel) message.obj; 5534 if (ac == mWifiP2pChannel) { 5535 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5536 //TODO: Re-establish connection to state machine after a delay 5537 // mWifiP2pChannel.connect(mContext, getHandler(), 5538 // mWifiP2pManager.getMessenger()); 5539 } 5540 break; 5541 } 5542 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5543 mBluetoothConnectionActive = (message.arg1 != 5544 BluetoothAdapter.STATE_DISCONNECTED); 5545 break; 5546 /* Synchronous call returns */ 5547 case CMD_PING_SUPPLICANT: 5548 case CMD_ENABLE_NETWORK: 5549 case CMD_ADD_OR_UPDATE_NETWORK: 5550 case CMD_REMOVE_NETWORK: 5551 case CMD_SAVE_CONFIG: 5552 replyToMessage(message, message.what, FAILURE); 5553 break; 5554 case CMD_GET_CAPABILITY_FREQ: 5555 replyToMessage(message, message.what, null); 5556 break; 5557 case CMD_GET_CONFIGURED_NETWORKS: 5558 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5559 break; 5560 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5561 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5562 break; 5563 case CMD_ENABLE_RSSI_POLL: 5564 mEnableRssiPolling = (message.arg1 == 1); 5565 break; 5566 case CMD_SET_HIGH_PERF_MODE: 5567 if (message.arg1 == 1) { 5568 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5569 } else { 5570 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5571 } 5572 break; 5573 case CMD_BOOT_COMPLETED: 5574 maybeRegisterNetworkFactory(); 5575 break; 5576 case CMD_SCREEN_STATE_CHANGED: 5577 handleScreenStateChanged(message.arg1 != 0); 5578 break; 5579 /* Discard */ 5580 case CMD_START_SCAN: 5581 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5582 break; 5583 case CMD_START_SUPPLICANT: 5584 case CMD_STOP_SUPPLICANT: 5585 case CMD_STOP_SUPPLICANT_FAILED: 5586 case CMD_START_DRIVER: 5587 case CMD_STOP_DRIVER: 5588 case CMD_DELAYED_STOP_DRIVER: 5589 case CMD_DRIVER_START_TIMED_OUT: 5590 case CMD_START_AP: 5591 case CMD_START_AP_SUCCESS: 5592 case CMD_START_AP_FAILURE: 5593 case CMD_STOP_AP: 5594 case CMD_TETHER_STATE_CHANGE: 5595 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5596 case CMD_DISCONNECT: 5597 case CMD_RECONNECT: 5598 case CMD_REASSOCIATE: 5599 case CMD_RELOAD_TLS_AND_RECONNECT: 5600 case WifiMonitor.SUP_CONNECTION_EVENT: 5601 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5602 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5603 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5604 case WifiMonitor.SCAN_RESULTS_EVENT: 5605 case WifiMonitor.SCAN_FAILED_EVENT: 5606 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5607 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5608 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5609 case WifiMonitor.WPS_OVERLAP_EVENT: 5610 case CMD_BLACKLIST_NETWORK: 5611 case CMD_CLEAR_BLACKLIST: 5612 case CMD_SET_OPERATIONAL_MODE: 5613 case CMD_SET_COUNTRY_CODE: 5614 case CMD_SET_FREQUENCY_BAND: 5615 case CMD_RSSI_POLL: 5616 case CMD_ENABLE_ALL_NETWORKS: 5617 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5618 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5619 /* Handled by WifiApConfigStore */ 5620 case CMD_SET_AP_CONFIG: 5621 case CMD_SET_AP_CONFIG_COMPLETED: 5622 case CMD_REQUEST_AP_CONFIG: 5623 case CMD_RESPONSE_AP_CONFIG: 5624 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5625 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5626 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5627 case CMD_DISABLE_P2P_RSP: 5628 case WifiMonitor.SUP_REQUEST_IDENTITY: 5629 case CMD_TEST_NETWORK_DISCONNECT: 5630 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5631 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5632 case CMD_TARGET_BSSID: 5633 case CMD_AUTO_CONNECT: 5634 case CMD_AUTO_ROAM: 5635 case CMD_AUTO_SAVE_NETWORK: 5636 case CMD_ASSOCIATED_BSSID: 5637 case CMD_UNWANTED_NETWORK: 5638 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5639 case CMD_ROAM_WATCHDOG_TIMER: 5640 case CMD_DISABLE_EPHEMERAL_NETWORK: 5641 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5642 case CMD_STARTED_PNO_DBG: 5643 case CMD_STARTED_GSCAN_DBG: 5644 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5645 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5646 break; 5647 case DhcpStateMachine.CMD_ON_QUIT: 5648 mDhcpStateMachine = null; 5649 break; 5650 case CMD_SET_SUSPEND_OPT_ENABLED: 5651 if (message.arg1 == 1) { 5652 mSuspendWakeLock.release(); 5653 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5654 } else { 5655 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5656 } 5657 break; 5658 case WifiMonitor.DRIVER_HUNG_EVENT: 5659 setSupplicantRunning(false); 5660 setSupplicantRunning(true); 5661 break; 5662 case WifiManager.CONNECT_NETWORK: 5663 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5664 WifiManager.BUSY); 5665 break; 5666 case WifiManager.FORGET_NETWORK: 5667 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5668 WifiManager.BUSY); 5669 break; 5670 case WifiManager.SAVE_NETWORK: 5671 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5672 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5673 WifiManager.BUSY); 5674 break; 5675 case WifiManager.START_WPS: 5676 replyToMessage(message, WifiManager.WPS_FAILED, 5677 WifiManager.BUSY); 5678 break; 5679 case WifiManager.CANCEL_WPS: 5680 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5681 WifiManager.BUSY); 5682 break; 5683 case WifiManager.DISABLE_NETWORK: 5684 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5685 WifiManager.BUSY); 5686 break; 5687 case WifiManager.RSSI_PKTCNT_FETCH: 5688 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5689 WifiManager.BUSY); 5690 break; 5691 case CMD_GET_SUPPORTED_FEATURES: 5692 int featureSet = WifiNative.getSupportedFeatureSet(); 5693 replyToMessage(message, message.what, featureSet); 5694 break; 5695 case CMD_FIRMWARE_ALERT: 5696 if (mWifiLogger != null) { 5697 byte[] buffer = (byte[])message.obj; 5698 mWifiLogger.captureAlertData(message.arg1, buffer); 5699 } 5700 break; 5701 case CMD_GET_LINK_LAYER_STATS: 5702 // Not supported hence reply with error message 5703 replyToMessage(message, message.what, null); 5704 break; 5705 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5706 NetworkInfo info = (NetworkInfo) message.obj; 5707 mP2pConnected.set(info.isConnected()); 5708 break; 5709 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5710 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5711 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5712 break; 5713 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5714 case CMD_UPDATE_LINKPROPERTIES: 5715 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5716 break; 5717 case CMD_GET_MATCHING_CONFIG: 5718 replyToMessage(message, message.what); 5719 break; 5720 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5721 case CMD_IP_CONFIGURATION_LOST: 5722 case CMD_IP_REACHABILITY_LOST: 5723 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5724 break; 5725 case CMD_GET_CONNECTION_STATISTICS: 5726 replyToMessage(message, message.what, mWifiConnectionStatistics); 5727 break; 5728 case CMD_REMOVE_APP_CONFIGURATIONS: 5729 deferMessage(message); 5730 break; 5731 case CMD_REMOVE_USER_CONFIGURATIONS: 5732 deferMessage(message); 5733 break; 5734 case CMD_START_IP_PACKET_OFFLOAD: 5735 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5736 message.arg1, 5737 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5738 break; 5739 case CMD_STOP_IP_PACKET_OFFLOAD: 5740 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5741 message.arg1, 5742 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5743 break; 5744 case CMD_START_RSSI_MONITORING_OFFLOAD: 5745 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5746 break; 5747 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5748 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5749 break; 5750 default: 5751 loge("Error! unhandled message" + message); 5752 break; 5753 } 5754 return HANDLED; 5755 } 5756 } 5757 5758 class InitialState extends State { 5759 @Override 5760 public void enter() { 5761 WifiNative.stopHal(); 5762 mWifiNative.unloadDriver(); 5763 if (mWifiP2pChannel == null) { 5764 mWifiP2pChannel = new AsyncChannel(); 5765 mWifiP2pChannel.connect(mContext, getHandler(), 5766 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5767 } 5768 5769 if (mWifiApConfigChannel == null) { 5770 mWifiApConfigChannel = new AsyncChannel(); 5771 mWifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5772 mContext, getHandler()); 5773 mWifiApConfigStore.loadApConfiguration(); 5774 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5775 mWifiApConfigStore.getMessenger()); 5776 } 5777 5778 if (mWifiConfigStore.enableHalBasedPno.get()) { 5779 // make sure developer Settings are in sync with the config option 5780 mHalBasedPnoEnableInDevSettings = true; 5781 } 5782 } 5783 @Override 5784 public boolean processMessage(Message message) { 5785 logStateAndMessage(message, getClass().getSimpleName()); 5786 switch (message.what) { 5787 case CMD_START_SUPPLICANT: 5788 if (mWifiNative.loadDriver()) { 5789 try { 5790 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5791 } catch (Exception e) { 5792 loge("Failed to reload STA firmware " + e); 5793 // Continue 5794 } 5795 5796 try { 5797 // A runtime crash can leave the interface up and 5798 // IP addresses configured, and this affects 5799 // connectivity when supplicant starts up. 5800 // Ensure interface is down and we have no IP 5801 // addresses before a supplicant start. 5802 mNwService.setInterfaceDown(mInterfaceName); 5803 mNwService.clearInterfaceAddresses(mInterfaceName); 5804 5805 // Set privacy extensions 5806 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5807 5808 // IPv6 is enabled only as long as access point is connected since: 5809 // - IPv6 addresses and routes stick around after disconnection 5810 // - kernel is unaware when connected and fails to start IPv6 negotiation 5811 // - kernel can start autoconfiguration when 802.1x is not complete 5812 mNwService.disableIpv6(mInterfaceName); 5813 } catch (RemoteException re) { 5814 loge("Unable to change interface settings: " + re); 5815 } catch (IllegalStateException ie) { 5816 loge("Unable to change interface settings: " + ie); 5817 } 5818 5819 /* Stop a running supplicant after a runtime restart 5820 * Avoids issues with drivers that do not handle interface down 5821 * on a running supplicant properly. 5822 */ 5823 mWifiMonitor.killSupplicant(mP2pSupported); 5824 5825 if (WifiNative.startHal() == false) { 5826 /* starting HAL is optional */ 5827 loge("Failed to start HAL"); 5828 } 5829 5830 if (mWifiNative.startSupplicant(mP2pSupported)) { 5831 setWifiState(WIFI_STATE_ENABLING); 5832 if (DBG) log("Supplicant start successful"); 5833 mWifiMonitor.startMonitoring(); 5834 transitionTo(mSupplicantStartingState); 5835 } else { 5836 loge("Failed to start supplicant!"); 5837 } 5838 } else { 5839 loge("Failed to load driver"); 5840 } 5841 break; 5842 case CMD_START_AP: 5843 if (mWifiNative.loadDriver() == false) { 5844 loge("Failed to load driver for softap"); 5845 } else { 5846 if (enableSoftAp() == true) { 5847 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5848 transitionTo(mSoftApStartingState); 5849 } else { 5850 setWifiApState(WIFI_AP_STATE_FAILED, 5851 WifiManager.SAP_START_FAILURE_GENERAL); 5852 transitionTo(mInitialState); 5853 } 5854 } 5855 break; 5856 default: 5857 return NOT_HANDLED; 5858 } 5859 return HANDLED; 5860 } 5861 } 5862 5863 class SupplicantStartingState extends State { 5864 private void initializeWpsDetails() { 5865 String detail; 5866 detail = SystemProperties.get("ro.product.name", ""); 5867 if (!mWifiNative.setDeviceName(detail)) { 5868 loge("Failed to set device name " + detail); 5869 } 5870 detail = SystemProperties.get("ro.product.manufacturer", ""); 5871 if (!mWifiNative.setManufacturer(detail)) { 5872 loge("Failed to set manufacturer " + detail); 5873 } 5874 detail = SystemProperties.get("ro.product.model", ""); 5875 if (!mWifiNative.setModelName(detail)) { 5876 loge("Failed to set model name " + detail); 5877 } 5878 detail = SystemProperties.get("ro.product.model", ""); 5879 if (!mWifiNative.setModelNumber(detail)) { 5880 loge("Failed to set model number " + detail); 5881 } 5882 detail = SystemProperties.get("ro.serialno", ""); 5883 if (!mWifiNative.setSerialNumber(detail)) { 5884 loge("Failed to set serial number " + detail); 5885 } 5886 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5887 loge("Failed to set WPS config methods"); 5888 } 5889 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5890 loge("Failed to set primary device type " + mPrimaryDeviceType); 5891 } 5892 } 5893 5894 @Override 5895 public boolean processMessage(Message message) { 5896 logStateAndMessage(message, getClass().getSimpleName()); 5897 5898 switch(message.what) { 5899 case WifiMonitor.SUP_CONNECTION_EVENT: 5900 if (DBG) log("Supplicant connection established"); 5901 setWifiState(WIFI_STATE_ENABLED); 5902 mSupplicantRestartCount = 0; 5903 /* Reset the supplicant state to indicate the supplicant 5904 * state is not known at this time */ 5905 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5906 /* Initialize data structures */ 5907 mLastBssid = null; 5908 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5909 mLastSignalLevel = -1; 5910 5911 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5912 /* set frequency band of operation */ 5913 setFrequencyBand(); 5914 mWifiNative.enableSaveConfig(); 5915 mWifiConfigStore.loadAndEnableAllNetworks(); 5916 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5917 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5918 } 5919 initializeWpsDetails(); 5920 5921 sendSupplicantConnectionChangedBroadcast(true); 5922 transitionTo(mDriverStartedState); 5923 break; 5924 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5925 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5926 loge("Failed to setup control channel, restart supplicant"); 5927 mWifiMonitor.killSupplicant(mP2pSupported); 5928 transitionTo(mInitialState); 5929 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5930 } else { 5931 loge("Failed " + mSupplicantRestartCount + 5932 " times to start supplicant, unload driver"); 5933 mSupplicantRestartCount = 0; 5934 setWifiState(WIFI_STATE_UNKNOWN); 5935 transitionTo(mInitialState); 5936 } 5937 break; 5938 case CMD_START_SUPPLICANT: 5939 case CMD_STOP_SUPPLICANT: 5940 case CMD_START_AP: 5941 case CMD_STOP_AP: 5942 case CMD_START_DRIVER: 5943 case CMD_STOP_DRIVER: 5944 case CMD_SET_OPERATIONAL_MODE: 5945 case CMD_SET_COUNTRY_CODE: 5946 case CMD_SET_FREQUENCY_BAND: 5947 case CMD_START_PACKET_FILTERING: 5948 case CMD_STOP_PACKET_FILTERING: 5949 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5950 deferMessage(message); 5951 break; 5952 default: 5953 return NOT_HANDLED; 5954 } 5955 return HANDLED; 5956 } 5957 } 5958 5959 class SupplicantStartedState extends State { 5960 @Override 5961 public void enter() { 5962 /* Wifi is available as long as we have a connection to supplicant */ 5963 mNetworkInfo.setIsAvailable(true); 5964 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5965 5966 int defaultInterval = mContext.getResources().getInteger( 5967 R.integer.config_wifi_supplicant_scan_interval); 5968 5969 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5970 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5971 defaultInterval); 5972 5973 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5974 mWifiNative.setExternalSim(true); 5975 5976 /* turn on use of DFS channels */ 5977 WifiNative.setDfsFlag(true); 5978 5979 /* set country code */ 5980 initializeCountryCode(); 5981 5982 setRandomMacOui(); 5983 mWifiNative.enableAutoConnect(false); 5984 } 5985 5986 @Override 5987 public boolean processMessage(Message message) { 5988 logStateAndMessage(message, getClass().getSimpleName()); 5989 5990 switch(message.what) { 5991 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5992 if (mP2pSupported) { 5993 transitionTo(mWaitForP2pDisableState); 5994 } else { 5995 transitionTo(mSupplicantStoppingState); 5996 } 5997 break; 5998 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5999 loge("Connection lost, restart supplicant"); 6000 handleSupplicantConnectionLoss(true); 6001 handleNetworkDisconnect(); 6002 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6003 if (mP2pSupported) { 6004 transitionTo(mWaitForP2pDisableState); 6005 } else { 6006 transitionTo(mInitialState); 6007 } 6008 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 6009 break; 6010 case WifiMonitor.SCAN_RESULTS_EVENT: 6011 case WifiMonitor.SCAN_FAILED_EVENT: 6012 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 6013 closeRadioScanStats(); 6014 noteScanEnd(); 6015 setScanResults(); 6016 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 6017 /* Just updated results from full scan, let apps know about this */ 6018 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 6019 sendScanResultsAvailableBroadcast(scanSucceeded); 6020 } 6021 mSendScanResultsBroadcast = false; 6022 mIsScanOngoing = false; 6023 mIsFullScanOngoing = false; 6024 if (mBufferedScanMsg.size() > 0) 6025 sendMessage(mBufferedScanMsg.remove()); 6026 break; 6027 case CMD_PING_SUPPLICANT: 6028 boolean ok = mWifiNative.ping(); 6029 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6030 break; 6031 case CMD_GET_CAPABILITY_FREQ: 6032 String freqs = mWifiNative.getFreqCapability(); 6033 replyToMessage(message, message.what, freqs); 6034 break; 6035 case CMD_START_AP: 6036 /* Cannot start soft AP while in client mode */ 6037 loge("Failed to start soft AP with a running supplicant"); 6038 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 6039 break; 6040 case CMD_SET_OPERATIONAL_MODE: 6041 mOperationalMode = message.arg1; 6042 mWifiConfigStore. 6043 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6044 break; 6045 case CMD_TARGET_BSSID: 6046 // Trying to associate to this BSSID 6047 if (message.obj != null) { 6048 mTargetRoamBSSID = (String) message.obj; 6049 } 6050 break; 6051 case CMD_GET_LINK_LAYER_STATS: 6052 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 6053 if (stats == null) { 6054 // When firmware doesnt support link layer stats, return an empty object 6055 stats = new WifiLinkLayerStats(); 6056 } 6057 replyToMessage(message, message.what, stats); 6058 break; 6059 case CMD_SET_COUNTRY_CODE: 6060 String country = (String) message.obj; 6061 6062 final boolean persist = (message.arg2 == 1); 6063 final int sequence = message.arg1; 6064 6065 if (sequence != mCountryCodeSequence.get()) { 6066 if (DBG) log("set country code ignored due to sequnce num"); 6067 break; 6068 } 6069 6070 if (TextUtils.isEmpty(country)) { 6071 if (mRevertCountryCodeOnCellularLoss 6072 && !TextUtils.isEmpty(mDefaultCountryCode)) { 6073 if (DBG) log("Reverting wifi country code to default of " 6074 + mDefaultCountryCode); 6075 country = mDefaultCountryCode; 6076 } 6077 } else { 6078 country = country.toUpperCase(Locale.ROOT); 6079 } 6080 6081 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 6082 6083 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 6084 if (mWifiNative.setCountryCode(country)) { 6085 mDriverSetCountryCode = country; 6086 } else { 6087 loge("Failed to set country code " + country); 6088 } 6089 if (persist) { 6090 Settings.Global.putString(mContext.getContentResolver(), 6091 Settings.Global.WIFI_COUNTRY_CODE, 6092 country == null ? "" : country); 6093 } 6094 } 6095 6096 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 6097 break; 6098 default: 6099 return NOT_HANDLED; 6100 } 6101 return HANDLED; 6102 } 6103 6104 @Override 6105 public void exit() { 6106 mNetworkInfo.setIsAvailable(false); 6107 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 6108 } 6109 } 6110 6111 class SupplicantStoppingState extends State { 6112 @Override 6113 public void enter() { 6114 /* Send any reset commands to supplicant before shutting it down */ 6115 handleNetworkDisconnect(); 6116 if (mDhcpStateMachine != null) { 6117 mDhcpStateMachine.doQuit(); 6118 } 6119 6120 String suppState = System.getProperty("init.svc.wpa_supplicant"); 6121 if (suppState == null) suppState = "unknown"; 6122 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 6123 if (p2pSuppState == null) p2pSuppState = "unknown"; 6124 6125 logd("SupplicantStoppingState: stopSupplicant " 6126 + " init.svc.wpa_supplicant=" + suppState 6127 + " init.svc.p2p_supplicant=" + p2pSuppState); 6128 mWifiMonitor.stopSupplicant(); 6129 6130 /* Send ourselves a delayed message to indicate failure after a wait time */ 6131 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 6132 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 6133 setWifiState(WIFI_STATE_DISABLING); 6134 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6135 } 6136 @Override 6137 public boolean processMessage(Message message) { 6138 logStateAndMessage(message, getClass().getSimpleName()); 6139 6140 switch(message.what) { 6141 case WifiMonitor.SUP_CONNECTION_EVENT: 6142 loge("Supplicant connection received while stopping"); 6143 break; 6144 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6145 if (DBG) log("Supplicant connection lost"); 6146 handleSupplicantConnectionLoss(false); 6147 transitionTo(mInitialState); 6148 break; 6149 case CMD_STOP_SUPPLICANT_FAILED: 6150 if (message.arg1 == mSupplicantStopFailureToken) { 6151 loge("Timed out on a supplicant stop, kill and proceed"); 6152 handleSupplicantConnectionLoss(true); 6153 transitionTo(mInitialState); 6154 } 6155 break; 6156 case CMD_START_SUPPLICANT: 6157 case CMD_STOP_SUPPLICANT: 6158 case CMD_START_AP: 6159 case CMD_STOP_AP: 6160 case CMD_START_DRIVER: 6161 case CMD_STOP_DRIVER: 6162 case CMD_SET_OPERATIONAL_MODE: 6163 case CMD_SET_COUNTRY_CODE: 6164 case CMD_SET_FREQUENCY_BAND: 6165 case CMD_START_PACKET_FILTERING: 6166 case CMD_STOP_PACKET_FILTERING: 6167 deferMessage(message); 6168 break; 6169 default: 6170 return NOT_HANDLED; 6171 } 6172 return HANDLED; 6173 } 6174 } 6175 6176 class DriverStartingState extends State { 6177 private int mTries; 6178 @Override 6179 public void enter() { 6180 mTries = 1; 6181 /* Send ourselves a delayed message to start driver a second time */ 6182 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6183 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6184 } 6185 @Override 6186 public boolean processMessage(Message message) { 6187 logStateAndMessage(message, getClass().getSimpleName()); 6188 6189 switch(message.what) { 6190 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6191 SupplicantState state = handleSupplicantStateChange(message); 6192 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6193 * a state that indicates driver has started, it is ready to 6194 * receive driver commands 6195 */ 6196 if (SupplicantState.isDriverActive(state)) { 6197 transitionTo(mDriverStartedState); 6198 } 6199 break; 6200 case CMD_DRIVER_START_TIMED_OUT: 6201 if (message.arg1 == mDriverStartToken) { 6202 if (mTries >= 2) { 6203 loge("Failed to start driver after " + mTries); 6204 transitionTo(mDriverStoppedState); 6205 } else { 6206 loge("Driver start failed, retrying"); 6207 mWakeLock.acquire(); 6208 mWifiNative.startDriver(); 6209 mWakeLock.release(); 6210 6211 ++mTries; 6212 /* Send ourselves a delayed message to start driver again */ 6213 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6214 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6215 } 6216 } 6217 break; 6218 /* Queue driver commands & connection events */ 6219 case CMD_START_DRIVER: 6220 case CMD_STOP_DRIVER: 6221 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6222 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6223 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6224 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6225 case WifiMonitor.WPS_OVERLAP_EVENT: 6226 case CMD_SET_COUNTRY_CODE: 6227 case CMD_SET_FREQUENCY_BAND: 6228 case CMD_START_PACKET_FILTERING: 6229 case CMD_STOP_PACKET_FILTERING: 6230 case CMD_START_SCAN: 6231 case CMD_DISCONNECT: 6232 case CMD_REASSOCIATE: 6233 case CMD_RECONNECT: 6234 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6235 deferMessage(message); 6236 break; 6237 case WifiMonitor.SCAN_RESULTS_EVENT: 6238 case WifiMonitor.SCAN_FAILED_EVENT: 6239 // Loose scan results obtained in Driver Starting state, they can only confuse 6240 // the state machine 6241 break; 6242 default: 6243 return NOT_HANDLED; 6244 } 6245 return HANDLED; 6246 } 6247 } 6248 6249 class DriverStartedState extends State { 6250 @Override 6251 public void enter() { 6252 6253 if (PDBG) { 6254 logd("DriverStartedState enter"); 6255 } 6256 6257 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6258 mIsRunning = true; 6259 mInDelayedStop = false; 6260 mDelayedStopCounter++; 6261 updateBatteryWorkSource(null); 6262 /** 6263 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6264 * When this mode is on, some of the low-level scan parameters used by the 6265 * driver are changed to reduce interference with bluetooth 6266 */ 6267 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6268 /* initialize network state */ 6269 setNetworkDetailedState(DetailedState.DISCONNECTED); 6270 6271 /* Remove any filtering on Multicast v6 at start */ 6272 mWifiNative.stopFilteringMulticastV6Packets(); 6273 6274 /* Reset Multicast v4 filtering state */ 6275 if (mFilteringMulticastV4Packets.get()) { 6276 mWifiNative.startFilteringMulticastV4Packets(); 6277 } else { 6278 mWifiNative.stopFilteringMulticastV4Packets(); 6279 } 6280 6281 mDhcpActive = false; 6282 6283 if (mOperationalMode != CONNECT_MODE) { 6284 mWifiNative.disconnect(); 6285 mWifiConfigStore.disableAllNetworks(); 6286 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6287 setWifiState(WIFI_STATE_DISABLED); 6288 } 6289 transitionTo(mScanModeState); 6290 } else { 6291 6292 // Status pulls in the current supplicant state and network connection state 6293 // events over the monitor connection. This helps framework sync up with 6294 // current supplicant state 6295 // TODO: actually check th supplicant status string and make sure the supplicant 6296 // is in disconnecte4d state. 6297 mWifiNative.status(); 6298 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6299 transitionTo(mDisconnectedState); 6300 transitionTo(mDisconnectedState); 6301 } 6302 6303 // We may have missed screen update at boot 6304 if (mScreenBroadcastReceived.get() == false) { 6305 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6306 Context.POWER_SERVICE); 6307 handleScreenStateChanged(powerManager.isScreenOn()); 6308 } else { 6309 // Set the right suspend mode settings 6310 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6311 && mUserWantsSuspendOpt.get()); 6312 } 6313 mWifiNative.setPowerSave(true); 6314 6315 if (mP2pSupported) { 6316 if (mOperationalMode == CONNECT_MODE) { 6317 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6318 } else { 6319 // P2P statemachine starts in disabled state, and is not enabled until 6320 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6321 // keep it disabled. 6322 } 6323 } 6324 6325 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6326 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6327 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6328 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6329 6330 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6331 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6332 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6333 mHalBasedPnoDriverSupported = true; 6334 } 6335 6336 // Enable link layer stats gathering 6337 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6338 6339 if (PDBG) { 6340 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6341 + " feature=" + mHalFeatureSet); 6342 } 6343 } 6344 6345 @Override 6346 public boolean processMessage(Message message) { 6347 logStateAndMessage(message, getClass().getSimpleName()); 6348 6349 switch(message.what) { 6350 case CMD_START_SCAN: 6351 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6352 break; 6353 case CMD_SET_FREQUENCY_BAND: 6354 int band = message.arg1; 6355 if (DBG) log("set frequency band " + band); 6356 if (mWifiNative.setBand(band)) { 6357 6358 if (PDBG) logd("did set frequency band " + band); 6359 6360 mFrequencyBand.set(band); 6361 // Flush old data - like scan results 6362 mWifiNative.bssFlush(); 6363 // Fetch the latest scan results when frequency band is set 6364// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6365 6366 if (PDBG) logd("done set frequency band " + band); 6367 6368 } else { 6369 loge("Failed to set frequency band " + band); 6370 } 6371 break; 6372 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6373 mBluetoothConnectionActive = (message.arg1 != 6374 BluetoothAdapter.STATE_DISCONNECTED); 6375 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6376 break; 6377 case CMD_STOP_DRIVER: 6378 int mode = message.arg1; 6379 6380 /* Already doing a delayed stop */ 6381 if (mInDelayedStop) { 6382 if (DBG) log("Already in delayed stop"); 6383 break; 6384 } 6385 /* disconnect right now, but leave the driver running for a bit */ 6386 mWifiConfigStore.disableAllNetworks(); 6387 6388 mInDelayedStop = true; 6389 mDelayedStopCounter++; 6390 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6391 6392 /* send regular delayed shut down */ 6393 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6394 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 6395 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6396 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6397 DRIVER_STOP_REQUEST, driverStopIntent, 6398 PendingIntent.FLAG_UPDATE_CURRENT); 6399 6400 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6401 + mDriverStopDelayMs, mDriverStopIntent); 6402 break; 6403 case CMD_START_DRIVER: 6404 if (mInDelayedStop) { 6405 mInDelayedStop = false; 6406 mDelayedStopCounter++; 6407 mAlarmManager.cancel(mDriverStopIntent); 6408 if (DBG) log("Delayed stop ignored due to start"); 6409 if (mOperationalMode == CONNECT_MODE) { 6410 mWifiConfigStore.enableAllNetworks(); 6411 } 6412 } 6413 break; 6414 case CMD_DELAYED_STOP_DRIVER: 6415 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6416 if (message.arg1 != mDelayedStopCounter) break; 6417 if (getCurrentState() != mDisconnectedState) { 6418 mWifiNative.disconnect(); 6419 handleNetworkDisconnect(); 6420 } 6421 mWakeLock.acquire(); 6422 mWifiNative.stopDriver(); 6423 mWakeLock.release(); 6424 if (mP2pSupported) { 6425 transitionTo(mWaitForP2pDisableState); 6426 } else { 6427 transitionTo(mDriverStoppingState); 6428 } 6429 break; 6430 case CMD_START_PACKET_FILTERING: 6431 if (message.arg1 == MULTICAST_V6) { 6432 mWifiNative.startFilteringMulticastV6Packets(); 6433 } else if (message.arg1 == MULTICAST_V4) { 6434 mWifiNative.startFilteringMulticastV4Packets(); 6435 } else { 6436 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6437 } 6438 break; 6439 case CMD_STOP_PACKET_FILTERING: 6440 if (message.arg1 == MULTICAST_V6) { 6441 mWifiNative.stopFilteringMulticastV6Packets(); 6442 } else if (message.arg1 == MULTICAST_V4) { 6443 mWifiNative.stopFilteringMulticastV4Packets(); 6444 } else { 6445 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6446 } 6447 break; 6448 case CMD_SET_SUSPEND_OPT_ENABLED: 6449 if (message.arg1 == 1) { 6450 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6451 mSuspendWakeLock.release(); 6452 } else { 6453 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6454 } 6455 break; 6456 case CMD_SET_HIGH_PERF_MODE: 6457 if (message.arg1 == 1) { 6458 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6459 } else { 6460 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6461 } 6462 break; 6463 case CMD_ENABLE_TDLS: 6464 if (message.obj != null) { 6465 String remoteAddress = (String) message.obj; 6466 boolean enable = (message.arg1 == 1); 6467 mWifiNative.startTdls(remoteAddress, enable); 6468 } 6469 break; 6470 case WifiMonitor.ANQP_DONE_EVENT: 6471 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6472 break; 6473 case CMD_STOP_IP_PACKET_OFFLOAD: { 6474 int slot = message.arg1; 6475 int ret = stopWifiIPPacketOffload(slot); 6476 if (mNetworkAgent != null) { 6477 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6478 } 6479 break; 6480 } 6481 default: 6482 return NOT_HANDLED; 6483 } 6484 return HANDLED; 6485 } 6486 @Override 6487 public void exit() { 6488 6489 mWifiLogger.stopLogging(); 6490 6491 mIsRunning = false; 6492 updateBatteryWorkSource(null); 6493 mScanResults = new ArrayList<>(); 6494 6495 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6496 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6497 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6498 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6499 noteScanEnd(); // wrap up any pending request. 6500 mBufferedScanMsg.clear(); 6501 } 6502 } 6503 6504 class WaitForP2pDisableState extends State { 6505 private State mTransitionToState; 6506 @Override 6507 public void enter() { 6508 switch (getCurrentMessage().what) { 6509 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6510 mTransitionToState = mInitialState; 6511 break; 6512 case CMD_DELAYED_STOP_DRIVER: 6513 mTransitionToState = mDriverStoppingState; 6514 break; 6515 case CMD_STOP_SUPPLICANT: 6516 mTransitionToState = mSupplicantStoppingState; 6517 break; 6518 default: 6519 mTransitionToState = mDriverStoppingState; 6520 break; 6521 } 6522 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6523 } 6524 @Override 6525 public boolean processMessage(Message message) { 6526 logStateAndMessage(message, getClass().getSimpleName()); 6527 6528 switch(message.what) { 6529 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6530 transitionTo(mTransitionToState); 6531 break; 6532 /* Defer wifi start/shut and driver commands */ 6533 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6534 case CMD_START_SUPPLICANT: 6535 case CMD_STOP_SUPPLICANT: 6536 case CMD_START_AP: 6537 case CMD_STOP_AP: 6538 case CMD_START_DRIVER: 6539 case CMD_STOP_DRIVER: 6540 case CMD_SET_OPERATIONAL_MODE: 6541 case CMD_SET_COUNTRY_CODE: 6542 case CMD_SET_FREQUENCY_BAND: 6543 case CMD_START_PACKET_FILTERING: 6544 case CMD_STOP_PACKET_FILTERING: 6545 case CMD_START_SCAN: 6546 case CMD_DISCONNECT: 6547 case CMD_REASSOCIATE: 6548 case CMD_RECONNECT: 6549 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6550 deferMessage(message); 6551 break; 6552 default: 6553 return NOT_HANDLED; 6554 } 6555 return HANDLED; 6556 } 6557 } 6558 6559 class DriverStoppingState extends State { 6560 @Override 6561 public boolean processMessage(Message message) { 6562 logStateAndMessage(message, getClass().getSimpleName()); 6563 6564 switch(message.what) { 6565 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6566 SupplicantState state = handleSupplicantStateChange(message); 6567 if (state == SupplicantState.INTERFACE_DISABLED) { 6568 transitionTo(mDriverStoppedState); 6569 } 6570 break; 6571 /* Queue driver commands */ 6572 case CMD_START_DRIVER: 6573 case CMD_STOP_DRIVER: 6574 case CMD_SET_COUNTRY_CODE: 6575 case CMD_SET_FREQUENCY_BAND: 6576 case CMD_START_PACKET_FILTERING: 6577 case CMD_STOP_PACKET_FILTERING: 6578 case CMD_START_SCAN: 6579 case CMD_DISCONNECT: 6580 case CMD_REASSOCIATE: 6581 case CMD_RECONNECT: 6582 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6583 deferMessage(message); 6584 break; 6585 default: 6586 return NOT_HANDLED; 6587 } 6588 return HANDLED; 6589 } 6590 } 6591 6592 class DriverStoppedState extends State { 6593 @Override 6594 public boolean processMessage(Message message) { 6595 logStateAndMessage(message, getClass().getSimpleName()); 6596 switch (message.what) { 6597 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6598 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6599 SupplicantState state = stateChangeResult.state; 6600 // A WEXT bug means that we can be back to driver started state 6601 // unexpectedly 6602 if (SupplicantState.isDriverActive(state)) { 6603 transitionTo(mDriverStartedState); 6604 } 6605 break; 6606 case CMD_START_DRIVER: 6607 mWakeLock.acquire(); 6608 mWifiNative.startDriver(); 6609 mWakeLock.release(); 6610 transitionTo(mDriverStartingState); 6611 break; 6612 default: 6613 return NOT_HANDLED; 6614 } 6615 return HANDLED; 6616 } 6617 } 6618 6619 class ScanModeState extends State { 6620 private int mLastOperationMode; 6621 @Override 6622 public void enter() { 6623 mLastOperationMode = mOperationalMode; 6624 } 6625 @Override 6626 public boolean processMessage(Message message) { 6627 logStateAndMessage(message, getClass().getSimpleName()); 6628 6629 switch(message.what) { 6630 case CMD_SET_OPERATIONAL_MODE: 6631 if (message.arg1 == CONNECT_MODE) { 6632 6633 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6634 setWifiState(WIFI_STATE_ENABLED); 6635 // Load and re-enable networks when going back to enabled state 6636 // This is essential for networks to show up after restore 6637 mWifiConfigStore.loadAndEnableAllNetworks(); 6638 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6639 } else { 6640 mWifiConfigStore.enableAllNetworks(); 6641 } 6642 6643 // Try autojoining with recent network already present in the cache 6644 // If none are found then trigger a scan which will trigger autojoin 6645 // upon reception of scan results event 6646 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6647 startScan(ENABLE_WIFI, 0, null, null); 6648 } 6649 6650 // Loose last selection choice since user toggled WiFi 6651 mWifiConfigStore. 6652 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6653 6654 mOperationalMode = CONNECT_MODE; 6655 transitionTo(mDisconnectedState); 6656 } else { 6657 // Nothing to do 6658 return HANDLED; 6659 } 6660 break; 6661 // Handle scan. All the connection related commands are 6662 // handled only in ConnectModeState 6663 case CMD_START_SCAN: 6664 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6665 break; 6666 default: 6667 return NOT_HANDLED; 6668 } 6669 return HANDLED; 6670 } 6671 } 6672 6673 6674 String smToString(Message message) { 6675 return smToString(message.what); 6676 } 6677 6678 String smToString(int what) { 6679 String s = "unknown"; 6680 switch (what) { 6681 case WifiMonitor.DRIVER_HUNG_EVENT: 6682 s = "DRIVER_HUNG_EVENT"; 6683 break; 6684 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6685 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6686 break; 6687 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6688 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6689 break; 6690 case CMD_SET_FREQUENCY_BAND: 6691 s = "CMD_SET_FREQUENCY_BAND"; 6692 break; 6693 case CMD_DELAYED_NETWORK_DISCONNECT: 6694 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6695 break; 6696 case CMD_TEST_NETWORK_DISCONNECT: 6697 s = "CMD_TEST_NETWORK_DISCONNECT"; 6698 break; 6699 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6700 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6701 break; 6702 case CMD_DISABLE_EPHEMERAL_NETWORK: 6703 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6704 break; 6705 case CMD_START_DRIVER: 6706 s = "CMD_START_DRIVER"; 6707 break; 6708 case CMD_STOP_DRIVER: 6709 s = "CMD_STOP_DRIVER"; 6710 break; 6711 case CMD_STOP_SUPPLICANT: 6712 s = "CMD_STOP_SUPPLICANT"; 6713 break; 6714 case CMD_STOP_SUPPLICANT_FAILED: 6715 s = "CMD_STOP_SUPPLICANT_FAILED"; 6716 break; 6717 case CMD_START_SUPPLICANT: 6718 s = "CMD_START_SUPPLICANT"; 6719 break; 6720 case CMD_REQUEST_AP_CONFIG: 6721 s = "CMD_REQUEST_AP_CONFIG"; 6722 break; 6723 case CMD_RESPONSE_AP_CONFIG: 6724 s = "CMD_RESPONSE_AP_CONFIG"; 6725 break; 6726 case CMD_TETHER_STATE_CHANGE: 6727 s = "CMD_TETHER_STATE_CHANGE"; 6728 break; 6729 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6730 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6731 break; 6732 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6733 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6734 break; 6735 case CMD_ADD_OR_UPDATE_NETWORK: 6736 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6737 break; 6738 case CMD_REMOVE_NETWORK: 6739 s = "CMD_REMOVE_NETWORK"; 6740 break; 6741 case CMD_ENABLE_NETWORK: 6742 s = "CMD_ENABLE_NETWORK"; 6743 break; 6744 case CMD_ENABLE_ALL_NETWORKS: 6745 s = "CMD_ENABLE_ALL_NETWORKS"; 6746 break; 6747 case CMD_AUTO_CONNECT: 6748 s = "CMD_AUTO_CONNECT"; 6749 break; 6750 case CMD_AUTO_ROAM: 6751 s = "CMD_AUTO_ROAM"; 6752 break; 6753 case CMD_AUTO_SAVE_NETWORK: 6754 s = "CMD_AUTO_SAVE_NETWORK"; 6755 break; 6756 case CMD_BOOT_COMPLETED: 6757 s = "CMD_BOOT_COMPLETED"; 6758 break; 6759 case DhcpStateMachine.CMD_START_DHCP: 6760 s = "CMD_START_DHCP"; 6761 break; 6762 case DhcpStateMachine.CMD_STOP_DHCP: 6763 s = "CMD_STOP_DHCP"; 6764 break; 6765 case DhcpStateMachine.CMD_RENEW_DHCP: 6766 s = "CMD_RENEW_DHCP"; 6767 break; 6768 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6769 s = "CMD_PRE_DHCP_ACTION"; 6770 break; 6771 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6772 s = "CMD_POST_DHCP_ACTION"; 6773 break; 6774 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6775 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6776 break; 6777 case DhcpStateMachine.CMD_ON_QUIT: 6778 s = "CMD_ON_QUIT"; 6779 break; 6780 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6781 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6782 break; 6783 case WifiManager.DISABLE_NETWORK: 6784 s = "WifiManager.DISABLE_NETWORK"; 6785 break; 6786 case CMD_BLACKLIST_NETWORK: 6787 s = "CMD_BLACKLIST_NETWORK"; 6788 break; 6789 case CMD_CLEAR_BLACKLIST: 6790 s = "CMD_CLEAR_BLACKLIST"; 6791 break; 6792 case CMD_SAVE_CONFIG: 6793 s = "CMD_SAVE_CONFIG"; 6794 break; 6795 case CMD_GET_CONFIGURED_NETWORKS: 6796 s = "CMD_GET_CONFIGURED_NETWORKS"; 6797 break; 6798 case CMD_GET_SUPPORTED_FEATURES: 6799 s = "CMD_GET_SUPPORTED_FEATURES"; 6800 break; 6801 case CMD_UNWANTED_NETWORK: 6802 s = "CMD_UNWANTED_NETWORK"; 6803 break; 6804 case CMD_NETWORK_STATUS: 6805 s = "CMD_NETWORK_STATUS"; 6806 break; 6807 case CMD_GET_LINK_LAYER_STATS: 6808 s = "CMD_GET_LINK_LAYER_STATS"; 6809 break; 6810 case CMD_GET_MATCHING_CONFIG: 6811 s = "CMD_GET_MATCHING_CONFIG"; 6812 break; 6813 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6814 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6815 break; 6816 case CMD_DISCONNECT: 6817 s = "CMD_DISCONNECT"; 6818 break; 6819 case CMD_RECONNECT: 6820 s = "CMD_RECONNECT"; 6821 break; 6822 case CMD_REASSOCIATE: 6823 s = "CMD_REASSOCIATE"; 6824 break; 6825 case CMD_GET_CONNECTION_STATISTICS: 6826 s = "CMD_GET_CONNECTION_STATISTICS"; 6827 break; 6828 case CMD_SET_HIGH_PERF_MODE: 6829 s = "CMD_SET_HIGH_PERF_MODE"; 6830 break; 6831 case CMD_SET_COUNTRY_CODE: 6832 s = "CMD_SET_COUNTRY_CODE"; 6833 break; 6834 case CMD_ENABLE_RSSI_POLL: 6835 s = "CMD_ENABLE_RSSI_POLL"; 6836 break; 6837 case CMD_RSSI_POLL: 6838 s = "CMD_RSSI_POLL"; 6839 break; 6840 case CMD_START_PACKET_FILTERING: 6841 s = "CMD_START_PACKET_FILTERING"; 6842 break; 6843 case CMD_STOP_PACKET_FILTERING: 6844 s = "CMD_STOP_PACKET_FILTERING"; 6845 break; 6846 case CMD_SET_SUSPEND_OPT_ENABLED: 6847 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6848 break; 6849 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6850 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6851 break; 6852 case CMD_UPDATE_LINKPROPERTIES: 6853 s = "CMD_UPDATE_LINKPROPERTIES"; 6854 break; 6855 case CMD_RELOAD_TLS_AND_RECONNECT: 6856 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6857 break; 6858 case WifiManager.CONNECT_NETWORK: 6859 s = "CONNECT_NETWORK"; 6860 break; 6861 case WifiManager.SAVE_NETWORK: 6862 s = "SAVE_NETWORK"; 6863 break; 6864 case WifiManager.FORGET_NETWORK: 6865 s = "FORGET_NETWORK"; 6866 break; 6867 case WifiMonitor.SUP_CONNECTION_EVENT: 6868 s = "SUP_CONNECTION_EVENT"; 6869 break; 6870 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6871 s = "SUP_DISCONNECTION_EVENT"; 6872 break; 6873 case WifiMonitor.SCAN_RESULTS_EVENT: 6874 s = "SCAN_RESULTS_EVENT"; 6875 break; 6876 case WifiMonitor.SCAN_FAILED_EVENT: 6877 s = "SCAN_FAILED_EVENT"; 6878 break; 6879 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6880 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6881 break; 6882 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6883 s = "AUTHENTICATION_FAILURE_EVENT"; 6884 break; 6885 case WifiMonitor.SSID_TEMP_DISABLED: 6886 s = "SSID_TEMP_DISABLED"; 6887 break; 6888 case WifiMonitor.SSID_REENABLED: 6889 s = "SSID_REENABLED"; 6890 break; 6891 case WifiMonitor.WPS_SUCCESS_EVENT: 6892 s = "WPS_SUCCESS_EVENT"; 6893 break; 6894 case WifiMonitor.WPS_FAIL_EVENT: 6895 s = "WPS_FAIL_EVENT"; 6896 break; 6897 case WifiMonitor.SUP_REQUEST_IDENTITY: 6898 s = "SUP_REQUEST_IDENTITY"; 6899 break; 6900 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6901 s = "NETWORK_CONNECTION_EVENT"; 6902 break; 6903 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6904 s = "NETWORK_DISCONNECTION_EVENT"; 6905 break; 6906 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6907 s = "ASSOCIATION_REJECTION_EVENT"; 6908 break; 6909 case WifiMonitor.ANQP_DONE_EVENT: 6910 s = "WifiMonitor.ANQP_DONE_EVENT"; 6911 break; 6912 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6913 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6914 break; 6915 case WifiMonitor.HS20_DEAUTH_EVENT: 6916 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6917 break; 6918 case WifiMonitor.GAS_QUERY_START_EVENT: 6919 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6920 break; 6921 case CMD_SET_OPERATIONAL_MODE: 6922 s = "CMD_SET_OPERATIONAL_MODE"; 6923 break; 6924 case CMD_START_SCAN: 6925 s = "CMD_START_SCAN"; 6926 break; 6927 case CMD_DISABLE_P2P_RSP: 6928 s = "CMD_DISABLE_P2P_RSP"; 6929 break; 6930 case CMD_DISABLE_P2P_REQ: 6931 s = "CMD_DISABLE_P2P_REQ"; 6932 break; 6933 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6934 s = "GOOD_LINK_DETECTED"; 6935 break; 6936 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6937 s = "POOR_LINK_DETECTED"; 6938 break; 6939 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6940 s = "GROUP_CREATING_TIMED_OUT"; 6941 break; 6942 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6943 s = "P2P_CONNECTION_CHANGED"; 6944 break; 6945 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6946 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6947 break; 6948 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6949 s = "P2P.SET_MIRACAST_MODE"; 6950 break; 6951 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6952 s = "P2P.BLOCK_DISCOVERY"; 6953 break; 6954 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6955 s = "P2P.SET_COUNTRY_CODE"; 6956 break; 6957 case WifiManager.CANCEL_WPS: 6958 s = "CANCEL_WPS"; 6959 break; 6960 case WifiManager.CANCEL_WPS_FAILED: 6961 s = "CANCEL_WPS_FAILED"; 6962 break; 6963 case WifiManager.CANCEL_WPS_SUCCEDED: 6964 s = "CANCEL_WPS_SUCCEDED"; 6965 break; 6966 case WifiManager.START_WPS: 6967 s = "START_WPS"; 6968 break; 6969 case WifiManager.START_WPS_SUCCEEDED: 6970 s = "START_WPS_SUCCEEDED"; 6971 break; 6972 case WifiManager.WPS_FAILED: 6973 s = "WPS_FAILED"; 6974 break; 6975 case WifiManager.WPS_COMPLETED: 6976 s = "WPS_COMPLETED"; 6977 break; 6978 case WifiManager.RSSI_PKTCNT_FETCH: 6979 s = "RSSI_PKTCNT_FETCH"; 6980 break; 6981 case CMD_IP_CONFIGURATION_LOST: 6982 s = "CMD_IP_CONFIGURATION_LOST"; 6983 break; 6984 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6985 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6986 break; 6987 case CMD_IP_REACHABILITY_LOST: 6988 s = "CMD_IP_REACHABILITY_LOST"; 6989 break; 6990 case CMD_STATIC_IP_SUCCESS: 6991 s = "CMD_STATIC_IP_SUCCESSFUL"; 6992 break; 6993 case CMD_STATIC_IP_FAILURE: 6994 s = "CMD_STATIC_IP_FAILURE"; 6995 break; 6996 case DhcpStateMachine.DHCP_SUCCESS: 6997 s = "DHCP_SUCCESS"; 6998 break; 6999 case DhcpStateMachine.DHCP_FAILURE: 7000 s = "DHCP_FAILURE"; 7001 break; 7002 case CMD_TARGET_BSSID: 7003 s = "CMD_TARGET_BSSID"; 7004 break; 7005 case CMD_ASSOCIATED_BSSID: 7006 s = "CMD_ASSOCIATED_BSSID"; 7007 break; 7008 case CMD_REMOVE_APP_CONFIGURATIONS: 7009 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 7010 break; 7011 case CMD_REMOVE_USER_CONFIGURATIONS: 7012 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 7013 break; 7014 case CMD_ROAM_WATCHDOG_TIMER: 7015 s = "CMD_ROAM_WATCHDOG_TIMER"; 7016 break; 7017 case CMD_SCREEN_STATE_CHANGED: 7018 s = "CMD_SCREEN_STATE_CHANGED"; 7019 break; 7020 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7021 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 7022 break; 7023 case CMD_RESTART_AUTOJOIN_OFFLOAD: 7024 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 7025 break; 7026 case CMD_STARTED_PNO_DBG: 7027 s = "CMD_STARTED_PNO_DBG"; 7028 break; 7029 case CMD_STARTED_GSCAN_DBG: 7030 s = "CMD_STARTED_GSCAN_DBG"; 7031 break; 7032 case CMD_PNO_NETWORK_FOUND: 7033 s = "CMD_PNO_NETWORK_FOUND"; 7034 break; 7035 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 7036 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 7037 break; 7038 case CMD_START_IP_PACKET_OFFLOAD: 7039 s = "CMD_START_IP_PACKET_OFFLOAD"; 7040 break; 7041 case CMD_STOP_IP_PACKET_OFFLOAD: 7042 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 7043 break; 7044 case CMD_START_RSSI_MONITORING_OFFLOAD: 7045 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 7046 break; 7047 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 7048 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 7049 break; 7050 case CMD_RSSI_THRESHOLD_BREACH: 7051 s = "CMD_RSSI_THRESHOLD_BREACH"; 7052 break; 7053 default: 7054 s = "what:" + Integer.toString(what); 7055 break; 7056 } 7057 return s; 7058 } 7059 7060 void registerConnected() { 7061 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7062 long now_ms = System.currentTimeMillis(); 7063 // We are switching away from this configuration, 7064 // hence record the time we were connected last 7065 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7066 if (config != null) { 7067 config.lastConnected = System.currentTimeMillis(); 7068 config.autoJoinBailedDueToLowRssi = false; 7069 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 7070 config.numConnectionFailures = 0; 7071 config.numIpConfigFailures = 0; 7072 config.numAuthFailures = 0; 7073 config.numAssociation++; 7074 } 7075 mBadLinkspeedcount = 0; 7076 } 7077 } 7078 7079 void registerDisconnected() { 7080 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7081 long now_ms = System.currentTimeMillis(); 7082 // We are switching away from this configuration, 7083 // hence record the time we were connected last 7084 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7085 if (config != null) { 7086 config.lastDisconnected = System.currentTimeMillis(); 7087 if (config.ephemeral) { 7088 // Remove ephemeral WifiConfigurations from file 7089 mWifiConfigStore.forgetNetwork(mLastNetworkId); 7090 } 7091 } 7092 } 7093 } 7094 7095 void noteWifiDisabledWhileAssociated() { 7096 // We got disabled by user while we were associated, make note of it 7097 int rssi = mWifiInfo.getRssi(); 7098 WifiConfiguration config = getCurrentWifiConfiguration(); 7099 if (getCurrentState() == mConnectedState 7100 && rssi != WifiInfo.INVALID_RSSI 7101 && config != null) { 7102 boolean is24GHz = mWifiInfo.is24GHz(); 7103 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 7104 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 7105 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 7106 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 7107 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 7108 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 7109 if (isBadRSSI) { 7110 // Take note that we got disabled while RSSI was Bad 7111 config.numUserTriggeredWifiDisableLowRSSI++; 7112 } else if (isLowRSSI) { 7113 // Take note that we got disabled while RSSI was Low 7114 config.numUserTriggeredWifiDisableBadRSSI++; 7115 } else if (!isHighRSSI) { 7116 // Take note that we got disabled while RSSI was Not high 7117 config.numUserTriggeredWifiDisableNotHighRSSI++; 7118 } 7119 } 7120 } 7121 7122 WifiConfiguration getCurrentWifiConfiguration() { 7123 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 7124 return null; 7125 } 7126 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7127 } 7128 7129 ScanResult getCurrentScanResult() { 7130 WifiConfiguration config = getCurrentWifiConfiguration(); 7131 if (config == null) { 7132 return null; 7133 } 7134 String BSSID = mWifiInfo.getBSSID(); 7135 if (BSSID == null) { 7136 BSSID = mTargetRoamBSSID; 7137 } 7138 ScanDetailCache scanDetailCache = 7139 mWifiConfigStore.getScanDetailCache(config); 7140 7141 if (scanDetailCache == null) { 7142 return null; 7143 } 7144 7145 return scanDetailCache.get(BSSID); 7146 } 7147 7148 String getCurrentBSSID() { 7149 if (linkDebouncing) { 7150 return null; 7151 } 7152 return mLastBssid; 7153 } 7154 7155 class ConnectModeState extends State { 7156 7157 @Override 7158 public void enter() { 7159 connectScanningService(); 7160 } 7161 7162 @Override 7163 public boolean processMessage(Message message) { 7164 WifiConfiguration config; 7165 int netId; 7166 boolean ok; 7167 boolean didDisconnect; 7168 String bssid; 7169 String ssid; 7170 NetworkUpdateResult result; 7171 logStateAndMessage(message, getClass().getSimpleName()); 7172 7173 switch (message.what) { 7174 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7175 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 7176 didBlackListBSSID = false; 7177 bssid = (String) message.obj; 7178 if (bssid == null || TextUtils.isEmpty(bssid)) { 7179 // If BSSID is null, use the target roam BSSID 7180 bssid = mTargetRoamBSSID; 7181 } 7182 if (bssid != null) { 7183 // If we have a BSSID, tell configStore to black list it 7184 synchronized(mScanResultCache) { 7185 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 7186 (mLastNetworkId, bssid, false); 7187 } 7188 } 7189 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 7190 break; 7191 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7192 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 7193 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 7194 break; 7195 case WifiMonitor.SSID_TEMP_DISABLED: 7196 case WifiMonitor.SSID_REENABLED: 7197 String substr = (String) message.obj; 7198 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 7199 "temp-disabled" : "re-enabled"; 7200 logd("ConnectModeState SSID state=" + en + " nid=" 7201 + Integer.toString(message.arg1) + " [" + substr + "]"); 7202 synchronized(mScanResultCache) { 7203 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 7204 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 7205 } 7206 break; 7207 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7208 SupplicantState state = handleSupplicantStateChange(message); 7209 // A driver/firmware hang can now put the interface in a down state. 7210 // We detect the interface going down and recover from it 7211 if (!SupplicantState.isDriverActive(state)) { 7212 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7213 handleNetworkDisconnect(); 7214 } 7215 log("Detected an interface down, restart driver"); 7216 transitionTo(mDriverStoppedState); 7217 sendMessage(CMD_START_DRIVER); 7218 break; 7219 } 7220 7221 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7222 // when authentication times out after a successful connection, 7223 // we can figure this from the supplicant state. If supplicant 7224 // state is DISCONNECTED, but the mNetworkInfo says we are not 7225 // disconnected, we need to handle a disconnection 7226 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7227 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7228 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7229 handleNetworkDisconnect(); 7230 transitionTo(mDisconnectedState); 7231 } 7232 7233 // If we have COMPLETED a connection to a BSSID, start doing 7234 // DNAv4/DNAv6 -style probing for on-link neighbors of 7235 // interest (e.g. routers); harmless if none are configured. 7236 if (state == SupplicantState.COMPLETED) { 7237 if (mIpReachabilityMonitor != null) { 7238 mIpReachabilityMonitor.probeAll(); 7239 } 7240 } 7241 break; 7242 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7243 if (message.arg1 == 1) { 7244 mWifiNative.disconnect(); 7245 mTemporarilyDisconnectWifi = true; 7246 } else { 7247 mWifiNative.reconnect(); 7248 mTemporarilyDisconnectWifi = false; 7249 } 7250 break; 7251 case CMD_ADD_OR_UPDATE_NETWORK: 7252 config = (WifiConfiguration) message.obj; 7253 7254 if (!recordUidIfAuthorized(config, message.sendingUid, 7255 /* onlyAnnotate */ false)) { 7256 logw("Not authorized to update network " 7257 + " config=" + config.SSID 7258 + " cnid=" + config.networkId 7259 + " uid=" + message.sendingUid); 7260 replyToMessage(message, message.what, FAILURE); 7261 break; 7262 } 7263 7264 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7265 if (res < 0) { 7266 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7267 } else { 7268 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7269 if (curConfig != null && config != null) { 7270 if (curConfig.priority < config.priority 7271 && config.status == WifiConfiguration.Status.ENABLED) { 7272 // Interpret this as a connect attempt 7273 // Set the last selected configuration so as to allow the system to 7274 // stick the last user choice without persisting the choice 7275 mWifiConfigStore.setLastSelectedConfiguration(res); 7276 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7277 mWifiConfigStore.writeKnownNetworkHistory(false); 7278 7279 // Remember time of last connection attempt 7280 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7281 7282 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7283 7284 // As a courtesy to the caller, trigger a scan now 7285 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7286 } 7287 } 7288 } 7289 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7290 break; 7291 case CMD_REMOVE_NETWORK: 7292 netId = message.arg1; 7293 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7294 /* onlyAnnotate */ false)) { 7295 logw("Not authorized to remove network " 7296 + " cnid=" + netId 7297 + " uid=" + message.sendingUid); 7298 replyToMessage(message, message.what, FAILURE); 7299 break; 7300 } 7301 7302 ok = mWifiConfigStore.removeNetwork(message.arg1); 7303 if (!ok) { 7304 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7305 } 7306 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7307 break; 7308 case CMD_ENABLE_NETWORK: 7309 boolean disableOthers = message.arg2 == 1; 7310 netId = message.arg1; 7311 config = mWifiConfigStore.getWifiConfiguration(netId); 7312 if (config == null) { 7313 loge("No network with id = " + netId); 7314 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7315 break; 7316 } 7317 7318 // Tell autojoin the user did try to select to that network 7319 // However, do NOT persist the choice by bumping the priority of the network 7320 if (disableOthers) { 7321 mWifiAutoJoinController. 7322 updateConfigurationHistory(netId, true, false); 7323 // Set the last selected configuration so as to allow the system to 7324 // stick the last user choice without persisting the choice 7325 mWifiConfigStore.setLastSelectedConfiguration(netId); 7326 7327 // Remember time of last connection attempt 7328 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7329 7330 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7331 } 7332 // Cancel auto roam requests 7333 autoRoamSetBSSID(netId, "any"); 7334 7335 int uid = message.sendingUid; 7336 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7337 if (!ok) { 7338 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7339 } 7340 7341 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7342 break; 7343 case CMD_ENABLE_ALL_NETWORKS: 7344 long time = android.os.SystemClock.elapsedRealtime(); 7345 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7346 mWifiConfigStore.enableAllNetworks(); 7347 mLastEnableAllNetworksTime = time; 7348 } 7349 break; 7350 case WifiManager.DISABLE_NETWORK: 7351 if (mWifiConfigStore.disableNetwork(message.arg1, 7352 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7353 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7354 } else { 7355 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7356 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7357 WifiManager.ERROR); 7358 } 7359 break; 7360 case CMD_DISABLE_EPHEMERAL_NETWORK: 7361 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7362 if (config != null) { 7363 if (config.networkId == mLastNetworkId) { 7364 // Disconnect and let autojoin reselect a new network 7365 sendMessage(CMD_DISCONNECT); 7366 } 7367 } 7368 break; 7369 case CMD_BLACKLIST_NETWORK: 7370 mWifiConfigStore.blackListBssid((String) message.obj); 7371 break; 7372 case CMD_CLEAR_BLACKLIST: 7373 mWifiConfigStore.clearBssidBlacklist(); 7374 break; 7375 case CMD_SAVE_CONFIG: 7376 ok = mWifiConfigStore.saveConfig(); 7377 7378 if (DBG) logd("did save config " + ok); 7379 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7380 7381 // Inform the backup manager about a data change 7382 IBackupManager ibm = IBackupManager.Stub.asInterface( 7383 ServiceManager.getService(Context.BACKUP_SERVICE)); 7384 if (ibm != null) { 7385 try { 7386 ibm.dataChanged("com.android.providers.settings"); 7387 } catch (Exception e) { 7388 // Try again later 7389 } 7390 } 7391 break; 7392 case CMD_GET_CONFIGURED_NETWORKS: 7393 replyToMessage(message, message.what, 7394 mWifiConfigStore.getConfiguredNetworks()); 7395 break; 7396 case WifiMonitor.SUP_REQUEST_IDENTITY: 7397 int networkId = message.arg2; 7398 boolean identitySent = false; 7399 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7400 7401 if (targetWificonfiguration != null 7402 && targetWificonfiguration.enterpriseConfig != null) { 7403 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7404 } 7405 7406 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7407 if (targetWificonfiguration != null 7408 && targetWificonfiguration.networkId == networkId 7409 && targetWificonfiguration.allowedKeyManagement 7410 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7411 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7412 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7413 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7414 TelephonyManager tm = (TelephonyManager) 7415 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7416 if (tm != null) { 7417 String imsi = tm.getSubscriberId(); 7418 String mccMnc = ""; 7419 7420 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7421 mccMnc = tm.getSimOperator(); 7422 7423 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7424 7425 if (!identity.isEmpty()) { 7426 mWifiNative.simIdentityResponse(networkId, identity); 7427 identitySent = true; 7428 } 7429 } 7430 } 7431 if (!identitySent) { 7432 // Supplicant lacks credentials to connect to that network, hence black list 7433 ssid = (String) message.obj; 7434 if (targetWificonfiguration != null && ssid != null 7435 && targetWificonfiguration.SSID != null 7436 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7437 mWifiConfigStore.handleSSIDStateChange( 7438 targetWificonfiguration.networkId, false, 7439 "AUTH_FAILED no identity", null); 7440 } 7441 // Disconnect now, as we don't have any way to fullfill 7442 // the supplicant request. 7443 mWifiConfigStore.setLastSelectedConfiguration( 7444 WifiConfiguration.INVALID_NETWORK_ID); 7445 mWifiNative.disconnect(); 7446 } 7447 break; 7448 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7449 logd("Received SUP_REQUEST_SIM_AUTH"); 7450 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7451 if (requestData != null) { 7452 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7453 handleGsmAuthRequest(requestData); 7454 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7455 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7456 handle3GAuthRequest(requestData); 7457 } 7458 } else { 7459 loge("Invalid sim auth request"); 7460 } 7461 break; 7462 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7463 replyToMessage(message, message.what, 7464 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7465 break; 7466 case CMD_GET_MATCHING_CONFIG: 7467 replyToMessage(message, message.what, 7468 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7469 break; 7470 /* Do a redundant disconnect without transition */ 7471 case CMD_DISCONNECT: 7472 mWifiConfigStore.setLastSelectedConfiguration 7473 (WifiConfiguration.INVALID_NETWORK_ID); 7474 mWifiNative.disconnect(); 7475 break; 7476 case CMD_RECONNECT: 7477 mWifiAutoJoinController.attemptAutoJoin(); 7478 break; 7479 case CMD_REASSOCIATE: 7480 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7481 mWifiNative.reassociate(); 7482 break; 7483 case CMD_RELOAD_TLS_AND_RECONNECT: 7484 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7485 logd("Reconnecting to give a chance to un-connected TLS networks"); 7486 mWifiNative.disconnect(); 7487 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7488 mWifiNative.reconnect(); 7489 } 7490 break; 7491 case CMD_AUTO_ROAM: 7492 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7493 return HANDLED; 7494 case CMD_AUTO_CONNECT: 7495 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7496 * associated status to the STATUS command but somehow-someplace still thinks 7497 * it is associated and thus will ignore select/reconnect command with 7498 * following message: 7499 * "Already associated with the selected network - do nothing" 7500 * 7501 * Hence, sends a disconnect to supplicant first. 7502 */ 7503 didDisconnect = false; 7504 if (getCurrentState() != mDisconnectedState) { 7505 /** Supplicant will ignore the reconnect if we are currently associated, 7506 * hence trigger a disconnect 7507 */ 7508 didDisconnect = true; 7509 mWifiNative.disconnect(); 7510 } 7511 7512 /* connect command coming from auto-join */ 7513 config = (WifiConfiguration) message.obj; 7514 netId = message.arg1; 7515 int roam = message.arg2; 7516 logd("CMD_AUTO_CONNECT sup state " 7517 + mSupplicantStateTracker.getSupplicantStateName() 7518 + " my state " + getCurrentState().getName() 7519 + " nid=" + Integer.toString(netId) 7520 + " roam=" + Integer.toString(roam)); 7521 if (config == null) { 7522 loge("AUTO_CONNECT and no config, bail out..."); 7523 break; 7524 } 7525 7526 /* Make sure we cancel any previous roam request */ 7527 autoRoamSetBSSID(netId, config.BSSID); 7528 7529 /* Save the network config */ 7530 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7531 + " nid=" + Integer.toString(netId)); 7532 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7533 netId = result.getNetworkId(); 7534 logd("CMD_AUTO_CONNECT did save config -> " 7535 + " nid=" + Integer.toString(netId)); 7536 7537 // Since we updated the config,read it back from config store: 7538 config = mWifiConfigStore.getWifiConfiguration(netId); 7539 if (config == null) { 7540 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7541 break; 7542 } 7543 if (netId != config.networkId) { 7544 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7545 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7546 break; 7547 } 7548 7549 if (deferForUserInput(message, netId, false)) { 7550 break; 7551 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7552 WifiConfiguration.USER_BANNED) { 7553 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7554 WifiManager.NOT_AUTHORIZED); 7555 break; 7556 } 7557 7558 // Make sure the network is enabled, since supplicant will not reenable it 7559 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7560 7561 // If we're autojoining a network that the user or an app explicitly selected, 7562 // keep track of the UID that selected it. 7563 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7564 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7565 7566 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7567 lastConnectUid) && mWifiNative.reconnect()) { 7568 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7569 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7570 config = mWifiConfigStore.getWifiConfiguration(netId); 7571 if (config != null 7572 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7573 // If we autojoined a different config than the user selected one, 7574 // it means we could not see the last user selection, 7575 // or that the last user selection was faulty and ended up blacklisted 7576 // for some reason (in which case the user is notified with an error 7577 // message in the Wifi picker), and thus we managed to auto-join away 7578 // from the selected config. -> in that case we need to forget 7579 // the selection because we don't want to abruptly switch back to it. 7580 // 7581 // Note that the user selection is also forgotten after a period of time 7582 // during which the device has been disconnected. 7583 // The default value is 30 minutes : see the code path at bottom of 7584 // setScanResults() function. 7585 mWifiConfigStore. 7586 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7587 } 7588 mAutoRoaming = roam; 7589 if (isRoaming() || linkDebouncing) { 7590 transitionTo(mRoamingState); 7591 } else if (didDisconnect) { 7592 transitionTo(mDisconnectingState); 7593 } else { 7594 /* Already in disconnected state, nothing to change */ 7595 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7596 int delay = 60 * 1000; 7597 if (VDBG) { 7598 logd("Starting PNO alarm: " + delay); 7599 } 7600 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7601 System.currentTimeMillis() + delay, 7602 mPnoIntent); 7603 } 7604 mRestartAutoJoinOffloadCounter++; 7605 } 7606 } else { 7607 loge("Failed to connect config: " + config + " netId: " + netId); 7608 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7609 WifiManager.ERROR); 7610 break; 7611 } 7612 break; 7613 case CMD_REMOVE_APP_CONFIGURATIONS: 7614 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7615 break; 7616 case CMD_REMOVE_USER_CONFIGURATIONS: 7617 mWifiConfigStore.removeNetworksForUser(message.arg1); 7618 break; 7619 case WifiManager.CONNECT_NETWORK: 7620 /** 7621 * The connect message can contain a network id passed as arg1 on message or 7622 * or a config passed as obj on message. 7623 * For a new network, a config is passed to create and connect. 7624 * For an existing network, a network id is passed 7625 */ 7626 netId = message.arg1; 7627 config = (WifiConfiguration) message.obj; 7628 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7629 boolean updatedExisting = false; 7630 7631 /* Save the network config */ 7632 if (config != null) { 7633 // When connecting to an access point, WifiStateMachine wants to update the 7634 // relevant config with administrative data. This update should not be 7635 // considered a 'real' update, therefore lockdown by Device Owner must be 7636 // disregarded. 7637 if (!recordUidIfAuthorized(config, message.sendingUid, 7638 /* onlyAnnotate */ true)) { 7639 logw("Not authorized to update network " 7640 + " config=" + config.SSID 7641 + " cnid=" + config.networkId 7642 + " uid=" + message.sendingUid); 7643 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7644 WifiManager.NOT_AUTHORIZED); 7645 break; 7646 } 7647 7648 String configKey = config.configKey(true /* allowCached */); 7649 WifiConfiguration savedConfig = 7650 mWifiConfigStore.getWifiConfiguration(configKey); 7651 if (savedConfig != null) { 7652 // There is an existing config with this netId, but it wasn't exposed 7653 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7654 // getConfiguredNetworks). Remove those bits and update the config. 7655 config = savedConfig; 7656 logd("CONNECT_NETWORK updating existing config with id=" + 7657 config.networkId + " configKey=" + configKey); 7658 config.ephemeral = false; 7659 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7660 updatedExisting = true; 7661 } 7662 7663 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7664 netId = result.getNetworkId(); 7665 } 7666 config = mWifiConfigStore.getWifiConfiguration(netId); 7667 7668 if (config == null) { 7669 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7670 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7671 + getCurrentState().getName()); 7672 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7673 WifiManager.ERROR); 7674 break; 7675 } else { 7676 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7677 logd("CONNECT_NETWORK id=" + Integer.toString(netId) 7678 + " config=" + config.SSID 7679 + " cnid=" + config.networkId 7680 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7681 + " my state " + getCurrentState().getName() 7682 + " uid = " + message.sendingUid 7683 + wasSkipped); 7684 } 7685 7686 autoRoamSetBSSID(netId, "any"); 7687 7688 if (message.sendingUid == Process.WIFI_UID 7689 || message.sendingUid == Process.SYSTEM_UID) { 7690 // As a sanity measure, clear the BSSID in the supplicant network block. 7691 // If system or Wifi Settings want to connect, they will not 7692 // specify the BSSID. 7693 // If an app however had added a BSSID to this configuration, and the BSSID 7694 // was wrong, Then we would forever fail to connect until that BSSID 7695 // is cleaned up. 7696 clearConfigBSSID(config, "CONNECT_NETWORK"); 7697 } 7698 7699 if (deferForUserInput(message, netId, true)) { 7700 break; 7701 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7702 WifiConfiguration.USER_BANNED) { 7703 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7704 WifiManager.NOT_AUTHORIZED); 7705 break; 7706 } 7707 7708 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7709 7710 /* Tell autojoin the user did try to connect to that network if from settings */ 7711 boolean persist = 7712 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7713 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7714 7715 mWifiConfigStore.setLastSelectedConfiguration(netId); 7716 7717 didDisconnect = false; 7718 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7719 && mLastNetworkId != netId) { 7720 /** Supplicant will ignore the reconnect if we are currently associated, 7721 * hence trigger a disconnect 7722 */ 7723 didDisconnect = true; 7724 mWifiNative.disconnect(); 7725 } 7726 7727 // Make sure the network is enabled, since supplicant will not reenable it 7728 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7729 7730 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7731 message.sendingUid) && mWifiNative.reconnect()) { 7732 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7733 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7734 7735 /* The state tracker handles enabling networks upon completion/failure */ 7736 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7737 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7738 if (didDisconnect) { 7739 /* Expect a disconnection from the old connection */ 7740 transitionTo(mDisconnectingState); 7741 } else if (updatedExisting && getCurrentState() == mConnectedState && 7742 getCurrentWifiConfiguration().networkId == netId) { 7743 // Update the current set of network capabilities, but stay in the 7744 // current state. 7745 updateCapabilities(config); 7746 } else { 7747 /** 7748 * Directly go to disconnected state where we 7749 * process the connection events from supplicant 7750 **/ 7751 transitionTo(mDisconnectedState); 7752 } 7753 } else { 7754 loge("Failed to connect config: " + config + " netId: " + netId); 7755 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7756 WifiManager.ERROR); 7757 break; 7758 } 7759 break; 7760 case WifiManager.SAVE_NETWORK: 7761 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7762 // Fall thru 7763 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7764 lastSavedConfigurationAttempt = null; // Used for debug 7765 config = (WifiConfiguration) message.obj; 7766 if (config == null) { 7767 loge("ERROR: SAVE_NETWORK with null configuration" 7768 + mSupplicantStateTracker.getSupplicantStateName() 7769 + " my state " + getCurrentState().getName()); 7770 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7771 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7772 WifiManager.ERROR); 7773 break; 7774 } 7775 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7776 int nid = config.networkId; 7777 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7778 + " config=" + config.SSID 7779 + " nid=" + config.networkId 7780 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7781 + " my state " + getCurrentState().getName()); 7782 7783 // Only record the uid if this is user initiated 7784 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7785 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7786 /* onlyAnnotate */ false)) { 7787 logw("Not authorized to update network " 7788 + " config=" + config.SSID 7789 + " cnid=" + config.networkId 7790 + " uid=" + message.sendingUid); 7791 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7792 WifiManager.NOT_AUTHORIZED); 7793 break; 7794 } 7795 7796 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7797 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7798 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7799 if (result.hasIpChanged()) { 7800 // The currently connection configuration was changed 7801 // We switched from DHCP to static or from static to DHCP, or the 7802 // static IP address has changed. 7803 log("Reconfiguring IP on connection"); 7804 // TODO: clear addresses and disable IPv6 7805 // to simplify obtainingIpState. 7806 transitionTo(mObtainingIpState); 7807 } 7808 if (result.hasProxyChanged()) { 7809 log("Reconfiguring proxy on connection"); 7810 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7811 } 7812 } 7813 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7814 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7815 7816 if (VDBG) { 7817 logd("Success save network nid=" 7818 + Integer.toString(result.getNetworkId())); 7819 } 7820 7821 synchronized(mScanResultCache) { 7822 /** 7823 * If the command comes from WifiManager, then 7824 * tell autojoin the user did try to modify and save that network, 7825 * and interpret the SAVE_NETWORK as a request to connect 7826 */ 7827 boolean user = message.what == WifiManager.SAVE_NETWORK; 7828 7829 // Did this connect come from settings 7830 boolean persistConnect = 7831 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7832 7833 if (user) { 7834 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7835 mWifiConfigStore.writeKnownNetworkHistory(false); 7836 } 7837 7838 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7839 , user, persistConnect); 7840 mWifiAutoJoinController.attemptAutoJoin(); 7841 } 7842 } else { 7843 loge("Failed to save network"); 7844 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7845 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7846 WifiManager.ERROR); 7847 } 7848 break; 7849 case WifiManager.FORGET_NETWORK: 7850 // Debug only, remember last configuration that was forgotten 7851 WifiConfiguration toRemove 7852 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7853 if (toRemove == null) { 7854 lastForgetConfigurationAttempt = null; 7855 } else { 7856 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7857 } 7858 // check that the caller owns this network 7859 netId = message.arg1; 7860 7861 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7862 /* onlyAnnotate */ false)) { 7863 logw("Not authorized to forget network " 7864 + " cnid=" + netId 7865 + " uid=" + message.sendingUid); 7866 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7867 WifiManager.NOT_AUTHORIZED); 7868 break; 7869 } 7870 7871 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7872 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7873 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7874 (WifiConfiguration) message.obj); 7875 } else { 7876 loge("Failed to forget network"); 7877 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7878 WifiManager.ERROR); 7879 } 7880 break; 7881 case WifiManager.START_WPS: 7882 WpsInfo wpsInfo = (WpsInfo) message.obj; 7883 WpsResult wpsResult; 7884 switch (wpsInfo.setup) { 7885 case WpsInfo.PBC: 7886 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7887 break; 7888 case WpsInfo.KEYPAD: 7889 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7890 break; 7891 case WpsInfo.DISPLAY: 7892 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7893 break; 7894 default: 7895 wpsResult = new WpsResult(Status.FAILURE); 7896 loge("Invalid setup for WPS"); 7897 break; 7898 } 7899 mWifiConfigStore.setLastSelectedConfiguration 7900 (WifiConfiguration.INVALID_NETWORK_ID); 7901 if (wpsResult.status == Status.SUCCESS) { 7902 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7903 transitionTo(mWpsRunningState); 7904 } else { 7905 loge("Failed to start WPS with config " + wpsInfo.toString()); 7906 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7907 } 7908 break; 7909 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7910 if (DBG) log("Network connection established"); 7911 mLastNetworkId = message.arg1; 7912 mLastBssid = (String) message.obj; 7913 7914 mWifiInfo.setBSSID(mLastBssid); 7915 mWifiInfo.setNetworkId(mLastNetworkId); 7916 7917 sendNetworkStateChangeBroadcast(mLastBssid); 7918 transitionTo(mObtainingIpState); 7919 break; 7920 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7921 // Calling handleNetworkDisconnect here is redundant because we might already 7922 // have called it when leaving L2ConnectedState to go to disconnecting state 7923 // or thru other path 7924 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7925 // if they are valid, and only in this case call handleNEtworkDisconnect, 7926 // TODO: this should be fixed for a L MR release 7927 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7928 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7929 // at the chip etc... 7930 if (DBG) log("ConnectModeState: Network connection lost "); 7931 handleNetworkDisconnect(); 7932 transitionTo(mDisconnectedState); 7933 break; 7934 case CMD_PNO_NETWORK_FOUND: 7935 processPnoNetworkFound((ScanResult[])message.obj); 7936 break; 7937 default: 7938 return NOT_HANDLED; 7939 } 7940 return HANDLED; 7941 } 7942 } 7943 7944 private void updateCapabilities(WifiConfiguration config) { 7945 if (config != null) { 7946 if (config.ephemeral) { 7947 mNetworkCapabilities.removeCapability( 7948 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7949 } else { 7950 mNetworkCapabilities.addCapability( 7951 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7952 } 7953 } 7954 mNetworkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7955 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7956 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7957 } 7958 7959 private class WifiNetworkAgent extends NetworkAgent { 7960 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7961 NetworkCapabilities nc, LinkProperties lp, int score) { 7962 super(l, c, TAG, ni, nc, lp, score); 7963 } 7964 protected void unwanted() { 7965 // Ignore if we're not the current networkAgent. 7966 if (this != mNetworkAgent) return; 7967 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7968 + Integer.toString(mWifiInfo.score)); 7969 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7970 } 7971 7972 @Override 7973 protected void networkStatus(int status) { 7974 if (this != mNetworkAgent) return; 7975 if (status == NetworkAgent.INVALID_NETWORK) { 7976 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7977 + Integer.toString(mWifiInfo.score)); 7978 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7979 } else if (status == NetworkAgent.VALID_NETWORK) { 7980 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7981 + Integer.toString(mWifiInfo.score)); 7982 doNetworkStatus(status); 7983 } 7984 } 7985 7986 @Override 7987 protected void saveAcceptUnvalidated(boolean accept) { 7988 if (this != mNetworkAgent) return; 7989 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7990 } 7991 7992 @Override 7993 protected void startPacketKeepalive(Message msg) { 7994 WifiStateMachine.this.sendMessage( 7995 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 7996 } 7997 7998 @Override 7999 protected void stopPacketKeepalive(Message msg) { 8000 WifiStateMachine.this.sendMessage( 8001 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 8002 } 8003 8004 @Override 8005 protected void setSignalStrengthThresholds(int[] thresholds) { 8006 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 8007 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 8008 // MAX_VALUE at the start/end of the thresholds array if necessary. 8009 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 8010 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 8011 // re-arm the hardware event. This needs to be done on the state machine thread to 8012 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 8013 // sent in the NetworkCapabilities) must be the one received from the hardware event 8014 // received, or we might skip callbacks. 8015 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 8016 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 8017 if (thresholds.length == 0) { 8018 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8019 mWifiInfo.getRssi()); 8020 return; 8021 } 8022 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 8023 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 8024 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 8025 Arrays.sort(rssiVals); 8026 byte[] rssiRange = new byte[rssiVals.length]; 8027 for (int i = 0; i < rssiVals.length; i++) { 8028 int val = rssiVals[i]; 8029 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 8030 rssiRange[i] = (byte) val; 8031 } else { 8032 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 8033 + Arrays.toString(rssiVals)); 8034 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8035 mWifiInfo.getRssi()); 8036 return; 8037 } 8038 } 8039 // TODO: Do we quash rssi values in this sorted array which are very close? 8040 mRssiRanges = rssiRange; 8041 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 8042 mWifiInfo.getRssi()); 8043 } 8044 8045 @Override 8046 protected void preventAutomaticReconnect() { 8047 if (this != mNetworkAgent) return; 8048 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 8049 } 8050 } 8051 8052 void unwantedNetwork(int reason) { 8053 sendMessage(CMD_UNWANTED_NETWORK, reason); 8054 } 8055 8056 void doNetworkStatus(int status) { 8057 sendMessage(CMD_NETWORK_STATUS, status); 8058 } 8059 8060 // rfc4186 & rfc4187: 8061 // create Permanent Identity base on IMSI, 8062 // identity = usernam@realm 8063 // with username = prefix | IMSI 8064 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 8065 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 8066 String mcc; 8067 String mnc; 8068 String prefix; 8069 8070 if (imsi == null || imsi.isEmpty()) 8071 return ""; 8072 8073 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 8074 prefix = "1"; 8075 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 8076 prefix = "0"; 8077 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 8078 prefix = "6"; 8079 else // not a valide EapMethod 8080 return ""; 8081 8082 /* extract mcc & mnc from mccMnc */ 8083 if (mccMnc != null && !mccMnc.isEmpty()) { 8084 mcc = mccMnc.substring(0, 3); 8085 mnc = mccMnc.substring(3); 8086 if (mnc.length() == 2) 8087 mnc = "0" + mnc; 8088 } else { 8089 // extract mcc & mnc from IMSI, assume mnc size is 3 8090 mcc = imsi.substring(0, 3); 8091 mnc = imsi.substring(3, 6); 8092 } 8093 8094 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 8095 } 8096 8097 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 8098 if (config == null) 8099 return false; 8100 8101 // We are still seeing a fairly high power consumption triggered by autojoin scans 8102 // Hence do partial scans only for PSK configuration that are roamable since the 8103 // primary purpose of the partial scans is roaming. 8104 // Full badn scans with exponential backoff for the purpose or extended roaming and 8105 // network switching are performed unconditionally. 8106 ScanDetailCache scanDetailCache = 8107 mWifiConfigStore.getScanDetailCache(config); 8108 if (scanDetailCache == null 8109 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 8110 || scanDetailCache.size() > 6) { 8111 //return true but to not trigger the scan 8112 return true; 8113 } 8114 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 8115 ONE_HOUR_MILLI, restrictChannelList); 8116 if (channels != null && channels.size() != 0) { 8117 StringBuilder freqs = new StringBuilder(); 8118 boolean first = true; 8119 for (Integer channel : channels) { 8120 if (!first) 8121 freqs.append(","); 8122 freqs.append(channel.toString()); 8123 first = false; 8124 } 8125 //if (DBG) { 8126 logd("starting scan for " + config.configKey() + " with " + freqs); 8127 //} 8128 // Call wifi native to start the scan 8129 if (startScanNative( 8130 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 8131 freqs.toString())) { 8132 // Only count battery consumption if scan request is accepted 8133 noteScanStart(SCAN_ALARM_SOURCE, null); 8134 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8135 } else { 8136 // used for debug only, mark scan as failed 8137 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8138 } 8139 return true; 8140 } else { 8141 if (DBG) logd("no channels for " + config.configKey()); 8142 return false; 8143 } 8144 } 8145 8146 void clearCurrentConfigBSSID(String dbg) { 8147 // Clear the bssid in the current config's network block 8148 WifiConfiguration config = getCurrentWifiConfiguration(); 8149 if (config == null) 8150 return; 8151 clearConfigBSSID(config, dbg); 8152 } 8153 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8154 if (config == null) 8155 return; 8156 if (DBG) { 8157 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8158 + " config.bssid " + config.BSSID); 8159 } 8160 config.autoJoinBSSID = "any"; 8161 config.BSSID = "any"; 8162 if (DBG) { 8163 logd(dbg + " " + config.SSID 8164 + " nid=" + Integer.toString(config.networkId)); 8165 } 8166 mWifiConfigStore.saveWifiConfigBSSID(config); 8167 } 8168 8169 class L2ConnectedState extends State { 8170 @Override 8171 public void enter() { 8172 mRssiPollToken++; 8173 if (mEnableRssiPolling) { 8174 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8175 } 8176 if (mNetworkAgent != null) { 8177 loge("Have NetworkAgent when entering L2Connected"); 8178 setNetworkDetailedState(DetailedState.DISCONNECTED); 8179 } 8180 setNetworkDetailedState(DetailedState.CONNECTING); 8181 8182 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8183 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8184 } 8185 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8186 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8187 mLinkProperties, 60); 8188 8189 // We must clear the config BSSID, as the wifi chipset may decide to roam 8190 // from this point on and having the BSSID specified in the network block would 8191 // cause the roam to faile and the device to disconnect 8192 clearCurrentConfigBSSID("L2ConnectedState"); 8193 8194 try { 8195 mIpReachabilityMonitor = new IpReachabilityMonitor( 8196 mInterfaceName, 8197 new IpReachabilityMonitor.Callback() { 8198 @Override 8199 public void notifyLost(InetAddress ip, String logMsg) { 8200 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 8201 } 8202 }); 8203 } catch (IllegalArgumentException e) { 8204 Log.wtf("Failed to create IpReachabilityMonitor", e); 8205 } 8206 } 8207 8208 @Override 8209 public void exit() { 8210 if (mIpReachabilityMonitor != null) { 8211 mIpReachabilityMonitor.stop(); 8212 mIpReachabilityMonitor = null; 8213 } 8214 8215 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8216 // Bug: 15347363 8217 // For paranoia's sake, call handleNetworkDisconnect 8218 // only if BSSID is null or last networkId 8219 // is not invalid. 8220 if (DBG) { 8221 StringBuilder sb = new StringBuilder(); 8222 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8223 if (mLastBssid !=null) { 8224 sb.append(" ").append(mLastBssid); 8225 } 8226 } 8227 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8228 handleNetworkDisconnect(); 8229 } 8230 } 8231 8232 @Override 8233 public boolean processMessage(Message message) { 8234 logStateAndMessage(message, getClass().getSimpleName()); 8235 8236 switch (message.what) { 8237 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8238 handlePreDhcpSetup(); 8239 break; 8240 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8241 handlePostDhcpSetup(); 8242 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 8243 if (DBG) log("DHCP successful"); 8244 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 8245 // We advance to mConnectedState because handleIPv4Success will call 8246 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 8247 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 8248 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 8249 if (DBG) { 8250 int count = -1; 8251 WifiConfiguration config = getCurrentWifiConfiguration(); 8252 if (config != null) { 8253 count = config.numConnectionFailures; 8254 } 8255 log("DHCP failure count=" + count); 8256 } 8257 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 8258 // As above, we transition to mDisconnectingState via updateLinkProperties. 8259 } 8260 break; 8261 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8262 handleSuccessfulIpConfiguration(); 8263 sendConnectedState(); 8264 transitionTo(mConnectedState); 8265 break; 8266 case CMD_IP_CONFIGURATION_LOST: 8267 // Get Link layer stats so that we get fresh tx packet counters. 8268 getWifiLinkLayerStats(true); 8269 handleIpConfigurationLost(); 8270 transitionTo(mDisconnectingState); 8271 break; 8272 case CMD_IP_REACHABILITY_LOST: 8273 if (DBG && message.obj != null) log((String) message.obj); 8274 handleIpReachabilityLost(); 8275 transitionTo(mDisconnectingState); 8276 break; 8277 case CMD_DISCONNECT: 8278 mWifiNative.disconnect(); 8279 transitionTo(mDisconnectingState); 8280 break; 8281 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8282 if (message.arg1 == 1) { 8283 mWifiNative.disconnect(); 8284 mTemporarilyDisconnectWifi = true; 8285 transitionTo(mDisconnectingState); 8286 } 8287 break; 8288 case CMD_SET_OPERATIONAL_MODE: 8289 if (message.arg1 != CONNECT_MODE) { 8290 sendMessage(CMD_DISCONNECT); 8291 deferMessage(message); 8292 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8293 noteWifiDisabledWhileAssociated(); 8294 } 8295 } 8296 mWifiConfigStore. 8297 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8298 break; 8299 case CMD_SET_COUNTRY_CODE: 8300 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8301 deferMessage(message); 8302 break; 8303 case CMD_START_SCAN: 8304 if (DBG) { 8305 logd("CMD_START_SCAN source " + message.arg1 8306 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8307 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8308 + " targetRoamBSSID=" + mTargetRoamBSSID 8309 + " RSSI=" + mWifiInfo.getRssi()); 8310 } 8311 if (message.arg1 == SCAN_ALARM_SOURCE) { 8312 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8313 // not be processed) and restart the scan if neede 8314 if (!getEnableAutoJoinWhenAssociated()) { 8315 return HANDLED; 8316 } 8317 boolean shouldScan = mScreenOn; 8318 8319 if (!checkAndRestartDelayedScan(message.arg2, 8320 shouldScan, 8321 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8322 null, null)) { 8323 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8324 logd("L2Connected CMD_START_SCAN source " 8325 + message.arg1 8326 + " " + message.arg2 + ", " + mDelayedScanCounter 8327 + " -> obsolete"); 8328 return HANDLED; 8329 } 8330 if (mP2pConnected.get()) { 8331 logd("L2Connected CMD_START_SCAN source " 8332 + message.arg1 8333 + " " + message.arg2 + ", " + mDelayedScanCounter 8334 + " ignore because P2P is connected"); 8335 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8336 return HANDLED; 8337 } 8338 boolean tryFullBandScan = false; 8339 boolean restrictChannelList = false; 8340 long now_ms = System.currentTimeMillis(); 8341 if (DBG) { 8342 logd("CMD_START_SCAN with age=" 8343 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8344 + " interval=" + fullBandConnectedTimeIntervalMilli 8345 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8346 } 8347 if (mWifiInfo != null) { 8348 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8349 (now_ms - lastFullBandConnectedTimeMilli) 8350 > fullBandConnectedTimeIntervalMilli) { 8351 if (DBG) { 8352 logd("CMD_START_SCAN try full band scan age=" 8353 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8354 + " interval=" + fullBandConnectedTimeIntervalMilli 8355 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8356 } 8357 tryFullBandScan = true; 8358 } 8359 8360 if (mWifiInfo.txSuccessRate > 8361 mWifiConfigStore.maxTxPacketForFullScans 8362 || mWifiInfo.rxSuccessRate > 8363 mWifiConfigStore.maxRxPacketForFullScans) { 8364 // Too much traffic at the interface, hence no full band scan 8365 if (DBG) { 8366 logd("CMD_START_SCAN " + 8367 "prevent full band scan due to pkt rate"); 8368 } 8369 tryFullBandScan = false; 8370 } 8371 8372 if (mWifiInfo.txSuccessRate > 8373 mWifiConfigStore.maxTxPacketForPartialScans 8374 || mWifiInfo.rxSuccessRate > 8375 mWifiConfigStore.maxRxPacketForPartialScans) { 8376 // Don't scan if lots of packets are being sent 8377 restrictChannelList = true; 8378 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8379 if (DBG) { 8380 logd("CMD_START_SCAN source " + message.arg1 8381 + " ...and ignore scans" 8382 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8383 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8384 } 8385 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8386 return HANDLED; 8387 } 8388 } 8389 } 8390 8391 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8392 if (DBG) { 8393 logd("CMD_START_SCAN full=" + 8394 tryFullBandScan); 8395 } 8396 if (currentConfiguration != null) { 8397 if (fullBandConnectedTimeIntervalMilli 8398 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8399 // Sanity 8400 fullBandConnectedTimeIntervalMilli 8401 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8402 } 8403 if (tryFullBandScan) { 8404 lastFullBandConnectedTimeMilli = now_ms; 8405 if (fullBandConnectedTimeIntervalMilli 8406 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8407 // Increase the interval 8408 fullBandConnectedTimeIntervalMilli 8409 = fullBandConnectedTimeIntervalMilli 8410 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8411 8412 if (DBG) { 8413 logd("CMD_START_SCAN bump interval =" 8414 + fullBandConnectedTimeIntervalMilli); 8415 } 8416 } 8417 handleScanRequest( 8418 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8419 } else { 8420 if (!startScanForConfiguration( 8421 currentConfiguration, restrictChannelList)) { 8422 if (DBG) { 8423 logd("starting scan, " + 8424 " did not find channels -> full"); 8425 } 8426 lastFullBandConnectedTimeMilli = now_ms; 8427 if (fullBandConnectedTimeIntervalMilli 8428 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8429 // Increase the interval 8430 fullBandConnectedTimeIntervalMilli 8431 = fullBandConnectedTimeIntervalMilli 8432 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8433 8434 if (DBG) { 8435 logd("CMD_START_SCAN bump interval =" 8436 + fullBandConnectedTimeIntervalMilli); 8437 } 8438 } 8439 handleScanRequest( 8440 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8441 } 8442 } 8443 8444 } else { 8445 logd("CMD_START_SCAN : connected mode and no configuration"); 8446 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8447 } 8448 } else { 8449 // Not scan alarm source 8450 return NOT_HANDLED; 8451 } 8452 break; 8453 /* Ignore connection to same network */ 8454 case WifiManager.CONNECT_NETWORK: 8455 int netId = message.arg1; 8456 if (mWifiInfo.getNetworkId() == netId) { 8457 break; 8458 } 8459 return NOT_HANDLED; 8460 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8461 mWifiInfo.setBSSID((String) message.obj); 8462 mLastNetworkId = message.arg1; 8463 mWifiInfo.setNetworkId(mLastNetworkId); 8464 if(!mLastBssid.equals((String) message.obj)) { 8465 mLastBssid = (String) message.obj; 8466 sendNetworkStateChangeBroadcast(mLastBssid); 8467 } 8468 break; 8469 case CMD_RSSI_POLL: 8470 if (message.arg1 == mRssiPollToken) { 8471 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8472 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8473 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8474 if (stats != null) { 8475 // Sanity check the results provided by driver 8476 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8477 && (stats.rssi_mgmt == 0 8478 || stats.beacon_rx == 0)) { 8479 stats = null; 8480 } 8481 } 8482 // Get Info and continue polling 8483 fetchRssiLinkSpeedAndFrequencyNative(); 8484 calculateWifiScore(stats); 8485 } 8486 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8487 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8488 8489 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8490 } else { 8491 // Polling has completed 8492 } 8493 break; 8494 case CMD_ENABLE_RSSI_POLL: 8495 cleanWifiScore(); 8496 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8497 mEnableRssiPolling = (message.arg1 == 1); 8498 } else { 8499 mEnableRssiPolling = false; 8500 } 8501 mRssiPollToken++; 8502 if (mEnableRssiPolling) { 8503 // First poll 8504 fetchRssiLinkSpeedAndFrequencyNative(); 8505 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8506 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8507 } 8508 break; 8509 case WifiManager.RSSI_PKTCNT_FETCH: 8510 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8511 fetchRssiLinkSpeedAndFrequencyNative(); 8512 info.rssi = mWifiInfo.getRssi(); 8513 fetchPktcntNative(info); 8514 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8515 break; 8516 case CMD_DELAYED_NETWORK_DISCONNECT: 8517 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8518 8519 // Ignore if we are not debouncing 8520 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8521 + message.arg1); 8522 return HANDLED; 8523 } else { 8524 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8525 + message.arg1); 8526 8527 linkDebouncing = false; 8528 // If we are still debouncing while this message comes, 8529 // it means we were not able to reconnect within the alloted time 8530 // = LINK_FLAPPING_DEBOUNCE_MSEC 8531 // and thus, trigger a real disconnect 8532 handleNetworkDisconnect(); 8533 transitionTo(mDisconnectedState); 8534 } 8535 break; 8536 case CMD_ASSOCIATED_BSSID: 8537 if ((String) message.obj == null) { 8538 logw("Associated command w/o BSSID"); 8539 break; 8540 } 8541 mLastBssid = (String) message.obj; 8542 if (mLastBssid != null 8543 && (mWifiInfo.getBSSID() == null 8544 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8545 mWifiInfo.setBSSID((String) message.obj); 8546 sendNetworkStateChangeBroadcast(mLastBssid); 8547 } 8548 break; 8549 case CMD_START_RSSI_MONITORING_OFFLOAD: 8550 case CMD_RSSI_THRESHOLD_BREACH: 8551 byte currRssi = (byte) message.arg1; 8552 processRssiThreshold(currRssi, message.what); 8553 break; 8554 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8555 stopRssiMonitoringOffload(); 8556 break; 8557 default: 8558 return NOT_HANDLED; 8559 } 8560 8561 return HANDLED; 8562 } 8563 } 8564 8565 class ObtainingIpState extends State { 8566 @Override 8567 public void enter() { 8568 if (DBG) { 8569 String key = ""; 8570 if (getCurrentWifiConfiguration() != null) { 8571 key = getCurrentWifiConfiguration().configKey(); 8572 } 8573 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8574 + " " + key + " " 8575 + " roam=" + mAutoRoaming 8576 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8577 + " watchdog= " + obtainingIpWatchdogCount); 8578 } 8579 8580 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8581 // We might still be roaming 8582 linkDebouncing = false; 8583 8584 // Send event to CM & network change broadcast 8585 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8586 8587 // We must clear the config BSSID, as the wifi chipset may decide to roam 8588 // from this point on and having the BSSID specified in the network block would 8589 // cause the roam to faile and the device to disconnect 8590 clearCurrentConfigBSSID("ObtainingIpAddress"); 8591 8592 try { 8593 mNwService.enableIpv6(mInterfaceName); 8594 } catch (RemoteException re) { 8595 loge("Failed to enable IPv6: " + re); 8596 } catch (IllegalStateException e) { 8597 loge("Failed to enable IPv6: " + e); 8598 } 8599 8600 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8601 if (isRoaming()) { 8602 renewDhcp(); 8603 } else { 8604 // Remove any IP address on the interface in case we're switching from static 8605 // IP configuration to DHCP. This is safe because if we get here when not 8606 // roaming, we don't have a usable address. 8607 clearIPv4Address(mInterfaceName); 8608 startDhcp(); 8609 } 8610 obtainingIpWatchdogCount++; 8611 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8612 // Get Link layer stats so as we get fresh tx packet counters 8613 getWifiLinkLayerStats(true); 8614 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8615 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8616 } else { 8617 // stop any running dhcp before assigning static IP 8618 stopDhcp(); 8619 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8620 mLastNetworkId); 8621 if (config.ipAddress == null) { 8622 logd("Static IP lacks address"); 8623 sendMessage(CMD_STATIC_IP_FAILURE); 8624 } else { 8625 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8626 ifcg.setLinkAddress(config.ipAddress); 8627 ifcg.setInterfaceUp(); 8628 try { 8629 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8630 if (DBG) log("Static IP configuration succeeded"); 8631 DhcpResults dhcpResults = new DhcpResults(config); 8632 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8633 } catch (RemoteException re) { 8634 loge("Static IP configuration failed: " + re); 8635 sendMessage(CMD_STATIC_IP_FAILURE); 8636 } catch (IllegalStateException e) { 8637 loge("Static IP configuration failed: " + e); 8638 sendMessage(CMD_STATIC_IP_FAILURE); 8639 } 8640 } 8641 } 8642 } 8643 @Override 8644 public boolean processMessage(Message message) { 8645 logStateAndMessage(message, getClass().getSimpleName()); 8646 8647 switch(message.what) { 8648 case CMD_STATIC_IP_SUCCESS: 8649 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8650 break; 8651 case CMD_STATIC_IP_FAILURE: 8652 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8653 break; 8654 case CMD_AUTO_CONNECT: 8655 case CMD_AUTO_ROAM: 8656 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8657 break; 8658 case WifiManager.SAVE_NETWORK: 8659 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8660 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8661 deferMessage(message); 8662 break; 8663 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8664 case CMD_SET_HIGH_PERF_MODE: 8665 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8666 deferMessage(message); 8667 break; 8668 /* Defer scan request since we should not switch to other channels at DHCP */ 8669 case CMD_START_SCAN: 8670 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8671 deferMessage(message); 8672 break; 8673 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8674 if (message.arg1 == obtainingIpWatchdogCount) { 8675 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8676 + obtainingIpWatchdogCount); 8677 handleIpConfigurationLost(); 8678 transitionTo(mDisconnectingState); 8679 break; 8680 } 8681 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8682 break; 8683 default: 8684 return NOT_HANDLED; 8685 } 8686 return HANDLED; 8687 } 8688 } 8689 8690 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8691 // sets mPoorNetworkDetectionEnabled to false. 8692 class VerifyingLinkState extends State { 8693 @Override 8694 public void enter() { 8695 log(getName() + " enter"); 8696 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8697 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8698 sendNetworkStateChangeBroadcast(mLastBssid); 8699 // End roaming 8700 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8701 } 8702 @Override 8703 public boolean processMessage(Message message) { 8704 logStateAndMessage(message, getClass().getSimpleName()); 8705 8706 switch (message.what) { 8707 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8708 // Stay here 8709 log(getName() + " POOR_LINK_DETECTED: no transition"); 8710 break; 8711 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8712 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8713 sendConnectedState(); 8714 transitionTo(mConnectedState); 8715 break; 8716 default: 8717 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8718 return NOT_HANDLED; 8719 } 8720 return HANDLED; 8721 } 8722 } 8723 8724 private void sendConnectedState() { 8725 // If this network was explicitly selected by the user, evaluate whether to call 8726 // explicitlySelected() so the system can treat it appropriately. 8727 WifiConfiguration config = getCurrentWifiConfiguration(); 8728 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8729 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8730 if (DBG) { 8731 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8732 } 8733 if (prompt) { 8734 // Selected by the user via Settings or QuickSettings. If this network has Internet 8735 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8736 // really want to switch, or has already confirmed and selected "Don't ask again". 8737 if (DBG) { 8738 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8739 } 8740 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8741 } 8742 } 8743 8744 setNetworkDetailedState(DetailedState.CONNECTED); 8745 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8746 sendNetworkStateChangeBroadcast(mLastBssid); 8747 } 8748 8749 class RoamingState extends State { 8750 boolean mAssociated; 8751 @Override 8752 public void enter() { 8753 if (DBG) { 8754 log("RoamingState Enter" 8755 + " mScreenOn=" + mScreenOn ); 8756 } 8757 setScanAlarm(false); 8758 8759 // Make sure we disconnect if roaming fails 8760 roamWatchdogCount++; 8761 logd("Start Roam Watchdog " + roamWatchdogCount); 8762 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8763 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8764 mAssociated = false; 8765 } 8766 @Override 8767 public boolean processMessage(Message message) { 8768 logStateAndMessage(message, getClass().getSimpleName()); 8769 WifiConfiguration config; 8770 switch (message.what) { 8771 case CMD_IP_CONFIGURATION_LOST: 8772 config = getCurrentWifiConfiguration(); 8773 if (config != null) { 8774 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8775 mWifiConfigStore.noteRoamingFailure(config, 8776 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8777 } 8778 return NOT_HANDLED; 8779 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8780 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8781 return HANDLED; 8782 case CMD_UNWANTED_NETWORK: 8783 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8784 return HANDLED; 8785 case CMD_SET_OPERATIONAL_MODE: 8786 if (message.arg1 != CONNECT_MODE) { 8787 deferMessage(message); 8788 } 8789 break; 8790 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8791 /** 8792 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8793 * before NETWORK_DISCONNECTION_EVENT 8794 * And there is an associated BSSID corresponding to our target BSSID, then 8795 * we have missed the network disconnection, transition to mDisconnectedState 8796 * and handle the rest of the events there. 8797 */ 8798 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8799 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8800 || stateChangeResult.state == SupplicantState.INACTIVE 8801 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8802 if (DBG) { 8803 log("STATE_CHANGE_EVENT in roaming state " 8804 + stateChangeResult.toString() ); 8805 } 8806 if (stateChangeResult.BSSID != null 8807 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8808 handleNetworkDisconnect(); 8809 transitionTo(mDisconnectedState); 8810 } 8811 } 8812 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8813 // We completed the layer2 roaming part 8814 mAssociated = true; 8815 if (stateChangeResult.BSSID != null) { 8816 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8817 } 8818 } 8819 break; 8820 case CMD_ROAM_WATCHDOG_TIMER: 8821 if (roamWatchdogCount == message.arg1) { 8822 if (DBG) log("roaming watchdog! -> disconnect"); 8823 mRoamFailCount++; 8824 handleNetworkDisconnect(); 8825 mWifiNative.disconnect(); 8826 transitionTo(mDisconnectedState); 8827 } 8828 break; 8829 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8830 if (mAssociated) { 8831 if (DBG) log("roaming and Network connection established"); 8832 mLastNetworkId = message.arg1; 8833 mLastBssid = (String) message.obj; 8834 mWifiInfo.setBSSID(mLastBssid); 8835 mWifiInfo.setNetworkId(mLastNetworkId); 8836 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8837 sendNetworkStateChangeBroadcast(mLastBssid); 8838 transitionTo(mObtainingIpState); 8839 } else { 8840 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8841 } 8842 break; 8843 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8844 // Throw away but only if it corresponds to the network we're roaming to 8845 String bssid = (String)message.obj; 8846 if (true) { 8847 String target = ""; 8848 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8849 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8850 + " BSSID=" + bssid 8851 + " target=" + target); 8852 } 8853 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8854 handleNetworkDisconnect(); 8855 transitionTo(mDisconnectedState); 8856 } 8857 break; 8858 case WifiMonitor.SSID_TEMP_DISABLED: 8859 // Auth error while roaming 8860 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8861 + " id=" + Integer.toString(message.arg1) 8862 + " isRoaming=" + isRoaming() 8863 + " roam=" + Integer.toString(mAutoRoaming)); 8864 if (message.arg1 == mLastNetworkId) { 8865 config = getCurrentWifiConfiguration(); 8866 if (config != null) { 8867 mWifiLogger.captureBugReportData( 8868 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8869 mWifiConfigStore.noteRoamingFailure(config, 8870 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8871 } 8872 handleNetworkDisconnect(); 8873 transitionTo(mDisconnectingState); 8874 } 8875 return NOT_HANDLED; 8876 case CMD_START_SCAN: 8877 deferMessage(message); 8878 break; 8879 default: 8880 return NOT_HANDLED; 8881 } 8882 return HANDLED; 8883 } 8884 8885 @Override 8886 public void exit() { 8887 logd("WifiStateMachine: Leaving Roaming state"); 8888 } 8889 } 8890 8891 class ConnectedState extends State { 8892 @Override 8893 public void enter() { 8894 String address; 8895 updateDefaultRouteMacAddress(1000); 8896 if (DBG) { 8897 log("Enter ConnectedState " 8898 + " mScreenOn=" + mScreenOn 8899 + " scanperiod=" 8900 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8901 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8902 + mWifiConfigStore.enableHalBasedPno.get() 8903 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8904 } 8905 if (mScreenOn 8906 && getEnableAutoJoinWhenAssociated()) { 8907 if (useHalBasedAutoJoinOffload()) { 8908 startGScanConnectedModeOffload("connectedEnter"); 8909 } else { 8910 // restart scan alarm 8911 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8912 null, null); 8913 } 8914 } 8915 registerConnected(); 8916 lastConnectAttemptTimestamp = 0; 8917 targetWificonfiguration = null; 8918 // Paranoia 8919 linkDebouncing = false; 8920 8921 // Not roaming anymore 8922 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8923 8924 if (testNetworkDisconnect) { 8925 testNetworkDisconnectCounter++; 8926 logd("ConnectedState Enter start disconnect test " + 8927 testNetworkDisconnectCounter); 8928 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8929 testNetworkDisconnectCounter, 0), 15000); 8930 } 8931 8932 // Reenable all networks, allow for hidden networks to be scanned 8933 mWifiConfigStore.enableAllNetworks(); 8934 8935 mLastDriverRoamAttempt = 0; 8936 8937 //startLazyRoam(); 8938 } 8939 @Override 8940 public boolean processMessage(Message message) { 8941 WifiConfiguration config = null; 8942 logStateAndMessage(message, getClass().getSimpleName()); 8943 8944 switch (message.what) { 8945 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8946 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8947 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8948 return HANDLED; 8949 } 8950 /* If we are still in Disconnected state after having discovered a valid 8951 * network this means autojoin didnt managed to associate to the network, 8952 * then restart PNO so as we will try associating to it again. 8953 */ 8954 if (useHalBasedAutoJoinOffload()) { 8955 if (mGScanStartTimeMilli == 0) { 8956 // If offload is not started, then start it... 8957 startGScanConnectedModeOffload("connectedRestart"); 8958 } else { 8959 // If offload is already started, then check if we need to increase 8960 // the scan period and restart the Gscan 8961 long now = System.currentTimeMillis(); 8962 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8963 && ((now - mGScanStartTimeMilli) 8964 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8965 && (mGScanPeriodMilli 8966 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8967 { 8968 startConnectedGScan("Connected restart gscan"); 8969 } 8970 } 8971 } 8972 break; 8973 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8974 updateAssociatedScanPermission(); 8975 break; 8976 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8977 if (DBG) log("Watchdog reports poor link"); 8978 transitionTo(mVerifyingLinkState); 8979 break; 8980 case CMD_UNWANTED_NETWORK: 8981 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8982 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8983 mWifiNative.disconnect(); 8984 transitionTo(mDisconnectingState); 8985 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8986 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8987 config = getCurrentWifiConfiguration(); 8988 if (config != null) { 8989 // Disable autojoin 8990 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8991 config.validatedInternetAccess = false; 8992 // Clear last-selected status, as being last-selected also avoids 8993 // disabling auto-join. 8994 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8995 mWifiConfigStore.setLastSelectedConfiguration( 8996 WifiConfiguration.INVALID_NETWORK_ID); 8997 } 8998 } 8999 config.numNoInternetAccessReports += 1; 9000 config.dirty = true; 9001 mWifiConfigStore.writeKnownNetworkHistory(false); 9002 } 9003 } 9004 return HANDLED; 9005 case CMD_NETWORK_STATUS: 9006 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 9007 config = getCurrentWifiConfiguration(); 9008 if (config != null) { 9009 if (!config.validatedInternetAccess 9010 || config.numNoInternetAccessReports != 0) { 9011 config.dirty = true; 9012 } 9013 // re-enable autojoin 9014 config.numNoInternetAccessReports = 0; 9015 config.validatedInternetAccess = true; 9016 mWifiConfigStore.writeKnownNetworkHistory(false); 9017 } 9018 } 9019 return HANDLED; 9020 case CMD_ACCEPT_UNVALIDATED: 9021 boolean accept = (message.arg1 != 0); 9022 config = getCurrentWifiConfiguration(); 9023 if (config != null) { 9024 config.noInternetAccessExpected = accept; 9025 } 9026 return HANDLED; 9027 case CMD_TEST_NETWORK_DISCONNECT: 9028 // Force a disconnect 9029 if (message.arg1 == testNetworkDisconnectCounter) { 9030 mWifiNative.disconnect(); 9031 } 9032 break; 9033 case CMD_ASSOCIATED_BSSID: 9034 // ASSOCIATING to a new BSSID while already connected, indicates 9035 // that driver is roaming 9036 mLastDriverRoamAttempt = System.currentTimeMillis(); 9037 String toBSSID = (String)message.obj; 9038 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 9039 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 9040 } 9041 return NOT_HANDLED; 9042 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9043 long lastRoam = 0; 9044 if (mLastDriverRoamAttempt != 0) { 9045 // Calculate time since last driver roam attempt 9046 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 9047 mLastDriverRoamAttempt = 0; 9048 } 9049 if (unexpectedDisconnectedReason(message.arg2)) { 9050 mWifiLogger.captureBugReportData( 9051 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 9052 } 9053 config = getCurrentWifiConfiguration(); 9054 if (mScreenOn 9055 && !linkDebouncing 9056 && config != null 9057 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 9058 && !mWifiConfigStore.isLastSelectedConfiguration(config) 9059 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 9060 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 9061 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 9062 && mWifiInfo.getRssi() > 9063 WifiConfiguration.BAD_RSSI_24) 9064 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 9065 && mWifiInfo.getRssi() > 9066 WifiConfiguration.BAD_RSSI_5))) { 9067 // Start de-bouncing the L2 disconnection: 9068 // this L2 disconnection might be spurious. 9069 // Hence we allow 7 seconds for the state machine to try 9070 // to reconnect, go thru the 9071 // roaming cycle and enter Obtaining IP address 9072 // before signalling the disconnect to ConnectivityService and L3 9073 startScanForConfiguration(getCurrentWifiConfiguration(), false); 9074 linkDebouncing = true; 9075 9076 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 9077 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 9078 if (DBG) { 9079 log("NETWORK_DISCONNECTION_EVENT in connected state" 9080 + " BSSID=" + mWifiInfo.getBSSID() 9081 + " RSSI=" + mWifiInfo.getRssi() 9082 + " freq=" + mWifiInfo.getFrequency() 9083 + " reason=" + message.arg2 9084 + " -> debounce"); 9085 } 9086 return HANDLED; 9087 } else { 9088 if (DBG) { 9089 int ajst = -1; 9090 if (config != null) ajst = config.autoJoinStatus; 9091 log("NETWORK_DISCONNECTION_EVENT in connected state" 9092 + " BSSID=" + mWifiInfo.getBSSID() 9093 + " RSSI=" + mWifiInfo.getRssi() 9094 + " freq=" + mWifiInfo.getFrequency() 9095 + " was debouncing=" + linkDebouncing 9096 + " reason=" + message.arg2 9097 + " ajst=" + ajst); 9098 } 9099 } 9100 break; 9101 case CMD_AUTO_ROAM: 9102 // Clear the driver roam indication since we are attempting a framework roam 9103 mLastDriverRoamAttempt = 0; 9104 9105 /* Connect command coming from auto-join */ 9106 ScanResult candidate = (ScanResult)message.obj; 9107 String bssid = "any"; 9108 if (candidate != null && candidate.is5GHz()) { 9109 // Only lock BSSID for 5GHz networks 9110 bssid = candidate.BSSID; 9111 } 9112 int netId = mLastNetworkId; 9113 config = getCurrentWifiConfiguration(); 9114 9115 9116 if (config == null) { 9117 loge("AUTO_ROAM and no config, bail out..."); 9118 break; 9119 } 9120 9121 logd("CMD_AUTO_ROAM sup state " 9122 + mSupplicantStateTracker.getSupplicantStateName() 9123 + " my state " + getCurrentState().getName() 9124 + " nid=" + Integer.toString(netId) 9125 + " config " + config.configKey() 9126 + " roam=" + Integer.toString(message.arg2) 9127 + " to " + bssid 9128 + " targetRoamBSSID " + mTargetRoamBSSID); 9129 9130 /* Save the BSSID so as to lock it @ firmware */ 9131 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 9132 logd("AUTO_ROAM nothing to do"); 9133 // Same BSSID, nothing to do 9134 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9135 break; 9136 }; 9137 9138 // Make sure the network is enabled, since supplicant will not re-enable it 9139 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 9140 9141 if (deferForUserInput(message, netId, false)) { 9142 break; 9143 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 9144 WifiConfiguration.USER_BANNED) { 9145 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9146 WifiManager.NOT_AUTHORIZED); 9147 break; 9148 } 9149 9150 boolean ret = false; 9151 if (mLastNetworkId != netId) { 9152 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 9153 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 9154 ret = true; 9155 } 9156 } else { 9157 ret = mWifiNative.reassociate(); 9158 } 9159 if (ret) { 9160 lastConnectAttemptTimestamp = System.currentTimeMillis(); 9161 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 9162 9163 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 9164 mAutoRoaming = message.arg2; 9165 transitionTo(mRoamingState); 9166 9167 } else { 9168 loge("Failed to connect config: " + config + " netId: " + netId); 9169 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9170 WifiManager.ERROR); 9171 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9172 break; 9173 } 9174 break; 9175 case CMD_START_IP_PACKET_OFFLOAD: { 9176 int slot = message.arg1; 9177 int intervalSeconds = message.arg2; 9178 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9179 byte[] dstMac; 9180 try { 9181 InetAddress gateway = RouteInfo.selectBestRoute( 9182 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9183 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9184 dstMac = macAddressFromString(dstMacStr); 9185 } catch (NullPointerException|IllegalArgumentException e) { 9186 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9187 mNetworkAgent.onPacketKeepaliveEvent(slot, 9188 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9189 break; 9190 } 9191 pkt.dstMac = dstMac; 9192 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9193 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9194 break; 9195 } 9196 default: 9197 return NOT_HANDLED; 9198 } 9199 return HANDLED; 9200 } 9201 9202 @Override 9203 public void exit() { 9204 logd("WifiStateMachine: Leaving Connected state"); 9205 setScanAlarm(false); 9206 mLastDriverRoamAttempt = 0; 9207 9208 stopLazyRoam(); 9209 9210 mWhiteListedSsids = null; 9211 } 9212 } 9213 9214 class DisconnectingState extends State { 9215 9216 @Override 9217 public void enter() { 9218 9219 if (PDBG) { 9220 logd(" Enter DisconnectingState State scan interval " 9221 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9222 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9223 + " screenOn=" + mScreenOn); 9224 } 9225 9226 // Make sure we disconnect: we enter this state prior to connecting to a new 9227 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9228 // event which in this case will be indicating that supplicant started to associate. 9229 // In some cases supplicant doesn't ignore the connect requests (it might not 9230 // find the target SSID in its cache), 9231 // Therefore we end up stuck that state, hence the need for the watchdog. 9232 disconnectingWatchdogCount++; 9233 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9234 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9235 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9236 } 9237 9238 @Override 9239 public boolean processMessage(Message message) { 9240 logStateAndMessage(message, getClass().getSimpleName()); 9241 switch (message.what) { 9242 case CMD_SET_OPERATIONAL_MODE: 9243 if (message.arg1 != CONNECT_MODE) { 9244 deferMessage(message); 9245 } 9246 break; 9247 case CMD_START_SCAN: 9248 deferMessage(message); 9249 return HANDLED; 9250 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9251 if (disconnectingWatchdogCount == message.arg1) { 9252 if (DBG) log("disconnecting watchdog! -> disconnect"); 9253 handleNetworkDisconnect(); 9254 transitionTo(mDisconnectedState); 9255 } 9256 break; 9257 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9258 /** 9259 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9260 * we have missed the network disconnection, transition to mDisconnectedState 9261 * and handle the rest of the events there 9262 */ 9263 deferMessage(message); 9264 handleNetworkDisconnect(); 9265 transitionTo(mDisconnectedState); 9266 break; 9267 default: 9268 return NOT_HANDLED; 9269 } 9270 return HANDLED; 9271 } 9272 } 9273 9274 class DisconnectedState extends State { 9275 @Override 9276 public void enter() { 9277 // We dont scan frequently if this is a temporary disconnect 9278 // due to p2p 9279 if (mTemporarilyDisconnectWifi) { 9280 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9281 return; 9282 } 9283 9284 if (PDBG) { 9285 logd(" Enter DisconnectedState scan interval " 9286 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9287 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9288 + " screenOn=" + mScreenOn 9289 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9290 + mWifiConfigStore.enableHalBasedPno.get()); 9291 } 9292 9293 /** clear the roaming state, if we were roaming, we failed */ 9294 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 9295 9296 if (useHalBasedAutoJoinOffload()) { 9297 startGScanDisconnectedModeOffload("disconnectedEnter"); 9298 } else { 9299 if (mScreenOn) { 9300 /** 9301 * screen lit and => delayed timer 9302 */ 9303 startDelayedScan(500, null, null); 9304 } else { 9305 /** 9306 * screen dark and PNO supported => scan alarm disabled 9307 */ 9308 if (mBackgroundScanSupported) { 9309 /* If a regular scan result is pending, do not initiate background 9310 * scan until the scan results are returned. This is needed because 9311 * initiating a background scan will cancel the regular scan and 9312 * scan results will not be returned until background scanning is 9313 * cleared 9314 */ 9315 if (!mIsScanOngoing) { 9316 enableBackgroundScan(true); 9317 } 9318 } else { 9319 setScanAlarm(true); 9320 } 9321 } 9322 } 9323 9324 /** 9325 * If we have no networks saved, the supplicant stops doing the periodic scan. 9326 * The scans are useful to notify the user of the presence of an open network. 9327 * Note that these are not wake up scans. 9328 */ 9329 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9330 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9331 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9332 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9333 } 9334 9335 mDisconnectedTimeStamp = System.currentTimeMillis(); 9336 mDisconnectedPnoAlarmCount = 0; 9337 } 9338 @Override 9339 public boolean processMessage(Message message) { 9340 boolean ret = HANDLED; 9341 9342 logStateAndMessage(message, getClass().getSimpleName()); 9343 9344 switch (message.what) { 9345 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9346 if (mP2pConnected.get()) break; 9347 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9348 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9349 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9350 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9351 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9352 } 9353 break; 9354 case WifiManager.FORGET_NETWORK: 9355 case CMD_REMOVE_NETWORK: 9356 case CMD_REMOVE_APP_CONFIGURATIONS: 9357 case CMD_REMOVE_USER_CONFIGURATIONS: 9358 // Set up a delayed message here. After the forget/remove is handled 9359 // the handled delayed message will determine if there is a need to 9360 // scan and continue 9361 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9362 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9363 ret = NOT_HANDLED; 9364 break; 9365 case CMD_SET_OPERATIONAL_MODE: 9366 if (message.arg1 != CONNECT_MODE) { 9367 mOperationalMode = message.arg1; 9368 9369 mWifiConfigStore.disableAllNetworks(); 9370 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9371 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9372 setWifiState(WIFI_STATE_DISABLED); 9373 } 9374 transitionTo(mScanModeState); 9375 } 9376 mWifiConfigStore. 9377 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9378 break; 9379 /* Ignore network disconnect */ 9380 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9381 break; 9382 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9383 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9384 if (DBG) { 9385 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9386 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9387 + " debouncing=" + linkDebouncing); 9388 } 9389 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9390 /* ConnectModeState does the rest of the handling */ 9391 ret = NOT_HANDLED; 9392 break; 9393 case CMD_START_SCAN: 9394 if (!checkOrDeferScanAllowed(message)) { 9395 // The scan request was rescheduled 9396 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9397 return HANDLED; 9398 } 9399 if (message.arg1 == SCAN_ALARM_SOURCE) { 9400 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9401 // not be processed) and restart the scan 9402 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9403 if (mP2pConnected.get()) { 9404 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9405 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9406 period); 9407 } 9408 if (!checkAndRestartDelayedScan(message.arg2, 9409 true, period, null, null)) { 9410 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9411 logd("Disconnected CMD_START_SCAN source " 9412 + message.arg1 9413 + " " + message.arg2 + ", " + mDelayedScanCounter 9414 + " -> obsolete"); 9415 return HANDLED; 9416 } 9417 /* Disable background scan temporarily during a regular scan */ 9418 enableBackgroundScan(false); 9419 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9420 ret = HANDLED; 9421 } else { 9422 9423 /* 9424 * The SCAN request is not handled in this state and 9425 * would eventually might/will get handled in the 9426 * parent's state. The PNO, if already enabled had to 9427 * get disabled before the SCAN trigger. Hence, stop 9428 * the PNO if already enabled in this state, though the 9429 * SCAN request is not handled(PNO disable before the 9430 * SCAN trigger in any other state is not the right 9431 * place to issue). 9432 */ 9433 9434 enableBackgroundScan(false); 9435 ret = NOT_HANDLED; 9436 } 9437 break; 9438 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9439 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9440 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9441 return HANDLED; 9442 } 9443 /* If we are still in Disconnected state after having discovered a valid 9444 * network this means autojoin didnt managed to associate to the network, 9445 * then restart PNO so as we will try associating to it again. 9446 */ 9447 if (useHalBasedAutoJoinOffload()) { 9448 if (mGScanStartTimeMilli == 0) { 9449 // If offload is not started, then start it... 9450 startGScanDisconnectedModeOffload("disconnectedRestart"); 9451 } else { 9452 // If offload is already started, then check if we need to increase 9453 // the scan period and restart the Gscan 9454 long now = System.currentTimeMillis(); 9455 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9456 && ((now - mGScanStartTimeMilli) 9457 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9458 && (mGScanPeriodMilli 9459 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9460 { 9461 startDisconnectedGScan("disconnected restart gscan"); 9462 } 9463 } 9464 } else { 9465 // If we are still disconnected for a short while after having found a 9466 // network thru PNO, then something went wrong, and for some reason we 9467 // couldn't join this network. 9468 // It might be due to a SW bug in supplicant or the wifi stack, or an 9469 // interoperability issue, or we try to join a bad bss and failed 9470 // In that case we want to restart pno so as to make sure that we will 9471 // attempt again to join that network. 9472 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9473 enableBackgroundScan(false); 9474 enableBackgroundScan(true); 9475 } 9476 return HANDLED; 9477 } 9478 break; 9479 case WifiMonitor.SCAN_RESULTS_EVENT: 9480 case WifiMonitor.SCAN_FAILED_EVENT: 9481 /* Re-enable background scan when a pending scan result is received */ 9482 if (!mScreenOn && mIsScanOngoing 9483 && mBackgroundScanSupported 9484 && !useHalBasedAutoJoinOffload()) { 9485 enableBackgroundScan(true); 9486 } else if (!mScreenOn 9487 && !mIsScanOngoing 9488 && mBackgroundScanSupported 9489 && !useHalBasedAutoJoinOffload()) { 9490 // We receive scan results from legacy PNO, hence restart the PNO alarm 9491 int delay; 9492 if (mDisconnectedPnoAlarmCount < 1) { 9493 delay = 30 * 1000; 9494 } else if (mDisconnectedPnoAlarmCount < 3) { 9495 delay = 60 * 1000; 9496 } else { 9497 delay = 360 * 1000; 9498 } 9499 mDisconnectedPnoAlarmCount++; 9500 if (VDBG) { 9501 logd("Starting PNO alarm " + delay); 9502 } 9503 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9504 System.currentTimeMillis() + delay, 9505 mPnoIntent); 9506 } 9507 /* Handled in parent state */ 9508 ret = NOT_HANDLED; 9509 break; 9510 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9511 NetworkInfo info = (NetworkInfo) message.obj; 9512 mP2pConnected.set(info.isConnected()); 9513 if (mP2pConnected.get()) { 9514 int defaultInterval = mContext.getResources().getInteger( 9515 R.integer.config_wifi_scan_interval_p2p_connected); 9516 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9517 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9518 defaultInterval); 9519 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9520 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9521 if (DBG) log("Turn on scanning after p2p disconnected"); 9522 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9523 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9524 } else { 9525 // If P2P is not connected and there are saved networks, then restart 9526 // scanning at the normal period. This is necessary because scanning might 9527 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9528 // was set to zero. 9529 if (useHalBasedAutoJoinOffload()) { 9530 startGScanDisconnectedModeOffload("p2pRestart"); 9531 } else { 9532 startDelayedScan( 9533 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9534 null, null); 9535 } 9536 } 9537 break; 9538 case CMD_RECONNECT: 9539 case CMD_REASSOCIATE: 9540 if (mTemporarilyDisconnectWifi) { 9541 // Drop a third party reconnect/reassociate if STA is 9542 // temporarily disconnected for p2p 9543 break; 9544 } else { 9545 // ConnectModeState handles it 9546 ret = NOT_HANDLED; 9547 } 9548 break; 9549 case CMD_SCREEN_STATE_CHANGED: 9550 handleScreenStateChanged(message.arg1 != 0); 9551 break; 9552 default: 9553 ret = NOT_HANDLED; 9554 } 9555 return ret; 9556 } 9557 9558 @Override 9559 public void exit() { 9560 mDisconnectedPnoAlarmCount = 0; 9561 /* No need for a background scan upon exit from a disconnected state */ 9562 enableBackgroundScan(false); 9563 setScanAlarm(false); 9564 mAlarmManager.cancel(mPnoIntent); 9565 } 9566 } 9567 9568 class WpsRunningState extends State { 9569 // Tracks the source to provide a reply 9570 private Message mSourceMessage; 9571 @Override 9572 public void enter() { 9573 mSourceMessage = Message.obtain(getCurrentMessage()); 9574 } 9575 @Override 9576 public boolean processMessage(Message message) { 9577 logStateAndMessage(message, getClass().getSimpleName()); 9578 9579 switch (message.what) { 9580 case WifiMonitor.WPS_SUCCESS_EVENT: 9581 // Ignore intermediate success, wait for full connection 9582 break; 9583 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9584 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9585 mSourceMessage.recycle(); 9586 mSourceMessage = null; 9587 deferMessage(message); 9588 transitionTo(mDisconnectedState); 9589 break; 9590 case WifiMonitor.WPS_OVERLAP_EVENT: 9591 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9592 WifiManager.WPS_OVERLAP_ERROR); 9593 mSourceMessage.recycle(); 9594 mSourceMessage = null; 9595 transitionTo(mDisconnectedState); 9596 break; 9597 case WifiMonitor.WPS_FAIL_EVENT: 9598 // Arg1 has the reason for the failure 9599 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9600 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9601 mSourceMessage.recycle(); 9602 mSourceMessage = null; 9603 transitionTo(mDisconnectedState); 9604 } else { 9605 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9606 } 9607 break; 9608 case WifiMonitor.WPS_TIMEOUT_EVENT: 9609 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9610 WifiManager.WPS_TIMED_OUT); 9611 mSourceMessage.recycle(); 9612 mSourceMessage = null; 9613 transitionTo(mDisconnectedState); 9614 break; 9615 case WifiManager.START_WPS: 9616 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9617 break; 9618 case WifiManager.CANCEL_WPS: 9619 if (mWifiNative.cancelWps()) { 9620 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9621 } else { 9622 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9623 } 9624 transitionTo(mDisconnectedState); 9625 break; 9626 /** 9627 * Defer all commands that can cause connections to a different network 9628 * or put the state machine out of connect mode 9629 */ 9630 case CMD_STOP_DRIVER: 9631 case CMD_SET_OPERATIONAL_MODE: 9632 case WifiManager.CONNECT_NETWORK: 9633 case CMD_ENABLE_NETWORK: 9634 case CMD_RECONNECT: 9635 case CMD_REASSOCIATE: 9636 case CMD_ENABLE_ALL_NETWORKS: 9637 deferMessage(message); 9638 break; 9639 case CMD_AUTO_CONNECT: 9640 case CMD_AUTO_ROAM: 9641 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9642 return HANDLED; 9643 case CMD_START_SCAN: 9644 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9645 return HANDLED; 9646 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9647 if (DBG) log("Network connection lost"); 9648 handleNetworkDisconnect(); 9649 break; 9650 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9651 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9652 break; 9653 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9654 // Disregard auth failure events during WPS connection. The 9655 // EAP sequence is retried several times, and there might be 9656 // failures (especially for wps pin). We will get a WPS_XXX 9657 // event at the end of the sequence anyway. 9658 if (DBG) log("Ignore auth failure during WPS connection"); 9659 break; 9660 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9661 // Throw away supplicant state changes when WPS is running. 9662 // We will start getting supplicant state changes once we get 9663 // a WPS success or failure 9664 break; 9665 default: 9666 return NOT_HANDLED; 9667 } 9668 return HANDLED; 9669 } 9670 9671 @Override 9672 public void exit() { 9673 mWifiConfigStore.enableAllNetworks(); 9674 mWifiConfigStore.loadConfiguredNetworks(); 9675 } 9676 } 9677 9678 class SoftApStartingState extends State { 9679 @Override 9680 public void enter() { 9681 final Message message = getCurrentMessage(); 9682 if (message.what == CMD_START_AP) { 9683 final WifiConfiguration config = (WifiConfiguration) message.obj; 9684 9685 if (config == null) { 9686 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9687 } else { 9688 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9689 startSoftApWithConfig(config); 9690 } 9691 } else { 9692 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9693 } 9694 } 9695 @Override 9696 public boolean processMessage(Message message) { 9697 logStateAndMessage(message, getClass().getSimpleName()); 9698 9699 switch(message.what) { 9700 case CMD_START_SUPPLICANT: 9701 case CMD_STOP_SUPPLICANT: 9702 case CMD_START_AP: 9703 case CMD_STOP_AP: 9704 case CMD_START_DRIVER: 9705 case CMD_STOP_DRIVER: 9706 case CMD_SET_OPERATIONAL_MODE: 9707 case CMD_SET_COUNTRY_CODE: 9708 case CMD_SET_FREQUENCY_BAND: 9709 case CMD_START_PACKET_FILTERING: 9710 case CMD_STOP_PACKET_FILTERING: 9711 case CMD_TETHER_STATE_CHANGE: 9712 deferMessage(message); 9713 break; 9714 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9715 WifiConfiguration config = (WifiConfiguration) message.obj; 9716 if (config != null) { 9717 startSoftApWithConfig(config); 9718 } else { 9719 loge("Softap config is null!"); 9720 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9721 } 9722 break; 9723 case CMD_START_AP_SUCCESS: 9724 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9725 transitionTo(mSoftApStartedState); 9726 break; 9727 case CMD_START_AP_FAILURE: 9728 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9729 transitionTo(mInitialState); 9730 break; 9731 default: 9732 return NOT_HANDLED; 9733 } 9734 return HANDLED; 9735 } 9736 } 9737 9738 class SoftApStartedState extends State { 9739 @Override 9740 public boolean processMessage(Message message) { 9741 logStateAndMessage(message, getClass().getSimpleName()); 9742 9743 switch(message.what) { 9744 case CMD_STOP_AP: 9745 if (DBG) log("Stopping Soft AP"); 9746 /* We have not tethered at this point, so we just shutdown soft Ap */ 9747 try { 9748 mNwService.stopAccessPoint(mInterfaceName); 9749 } catch(Exception e) { 9750 loge("Exception in stopAccessPoint()"); 9751 } 9752 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9753 transitionTo(mInitialState); 9754 break; 9755 case CMD_START_AP: 9756 // Ignore a start on a running access point 9757 break; 9758 // Fail client mode operation when soft AP is enabled 9759 case CMD_START_SUPPLICANT: 9760 loge("Cannot start supplicant with a running soft AP"); 9761 setWifiState(WIFI_STATE_UNKNOWN); 9762 break; 9763 case CMD_TETHER_STATE_CHANGE: 9764 TetherStateChange stateChange = (TetherStateChange) message.obj; 9765 if (startTethering(stateChange.available)) { 9766 transitionTo(mTetheringState); 9767 } 9768 break; 9769 default: 9770 return NOT_HANDLED; 9771 } 9772 return HANDLED; 9773 } 9774 } 9775 9776 class TetheringState extends State { 9777 @Override 9778 public void enter() { 9779 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9780 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9781 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9782 } 9783 @Override 9784 public boolean processMessage(Message message) { 9785 logStateAndMessage(message, getClass().getSimpleName()); 9786 9787 switch(message.what) { 9788 case CMD_TETHER_STATE_CHANGE: 9789 TetherStateChange stateChange = (TetherStateChange) message.obj; 9790 if (isWifiTethered(stateChange.active)) { 9791 transitionTo(mTetheredState); 9792 } 9793 return HANDLED; 9794 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9795 if (message.arg1 == mTetherToken) { 9796 loge("Failed to get tether update, shutdown soft access point"); 9797 transitionTo(mSoftApStartedState); 9798 // Needs to be first thing handled 9799 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9800 } 9801 break; 9802 case CMD_START_SUPPLICANT: 9803 case CMD_STOP_SUPPLICANT: 9804 case CMD_START_AP: 9805 case CMD_STOP_AP: 9806 case CMD_START_DRIVER: 9807 case CMD_STOP_DRIVER: 9808 case CMD_SET_OPERATIONAL_MODE: 9809 case CMD_SET_COUNTRY_CODE: 9810 case CMD_SET_FREQUENCY_BAND: 9811 case CMD_START_PACKET_FILTERING: 9812 case CMD_STOP_PACKET_FILTERING: 9813 deferMessage(message); 9814 break; 9815 default: 9816 return NOT_HANDLED; 9817 } 9818 return HANDLED; 9819 } 9820 } 9821 9822 class TetheredState extends State { 9823 @Override 9824 public boolean processMessage(Message message) { 9825 logStateAndMessage(message, getClass().getSimpleName()); 9826 9827 switch(message.what) { 9828 case CMD_TETHER_STATE_CHANGE: 9829 TetherStateChange stateChange = (TetherStateChange) message.obj; 9830 if (!isWifiTethered(stateChange.active)) { 9831 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9832 setHostApRunning(null, false); 9833 setHostApRunning(null, true); 9834 } 9835 return HANDLED; 9836 case CMD_STOP_AP: 9837 if (DBG) log("Untethering before stopping AP"); 9838 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9839 stopTethering(); 9840 transitionTo(mUntetheringState); 9841 // More work to do after untethering 9842 deferMessage(message); 9843 break; 9844 default: 9845 return NOT_HANDLED; 9846 } 9847 return HANDLED; 9848 } 9849 } 9850 9851 class UntetheringState extends State { 9852 @Override 9853 public void enter() { 9854 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9855 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9856 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9857 9858 } 9859 @Override 9860 public boolean processMessage(Message message) { 9861 logStateAndMessage(message, getClass().getSimpleName()); 9862 9863 switch(message.what) { 9864 case CMD_TETHER_STATE_CHANGE: 9865 TetherStateChange stateChange = (TetherStateChange) message.obj; 9866 9867 /* Wait till wifi is untethered */ 9868 if (isWifiTethered(stateChange.active)) break; 9869 9870 transitionTo(mSoftApStartedState); 9871 break; 9872 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9873 if (message.arg1 == mTetherToken) { 9874 loge("Failed to get tether update, force stop access point"); 9875 transitionTo(mSoftApStartedState); 9876 } 9877 break; 9878 case CMD_START_SUPPLICANT: 9879 case CMD_STOP_SUPPLICANT: 9880 case CMD_START_AP: 9881 case CMD_STOP_AP: 9882 case CMD_START_DRIVER: 9883 case CMD_STOP_DRIVER: 9884 case CMD_SET_OPERATIONAL_MODE: 9885 case CMD_SET_COUNTRY_CODE: 9886 case CMD_SET_FREQUENCY_BAND: 9887 case CMD_START_PACKET_FILTERING: 9888 case CMD_STOP_PACKET_FILTERING: 9889 deferMessage(message); 9890 break; 9891 default: 9892 return NOT_HANDLED; 9893 } 9894 return HANDLED; 9895 } 9896 } 9897 9898 /** 9899 * State machine initiated requests can have replyTo set to null indicating 9900 * there are no recepients, we ignore those reply actions. 9901 */ 9902 private void replyToMessage(Message msg, int what) { 9903 if (msg.replyTo == null) return; 9904 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9905 mReplyChannel.replyToMessage(msg, dstMsg); 9906 } 9907 9908 private void replyToMessage(Message msg, int what, int arg1) { 9909 if (msg.replyTo == null) return; 9910 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9911 dstMsg.arg1 = arg1; 9912 mReplyChannel.replyToMessage(msg, dstMsg); 9913 } 9914 9915 private void replyToMessage(Message msg, int what, Object obj) { 9916 if (msg.replyTo == null) return; 9917 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9918 dstMsg.obj = obj; 9919 mReplyChannel.replyToMessage(msg, dstMsg); 9920 } 9921 9922 /** 9923 * arg2 on the source message has a unique id that needs to be retained in replies 9924 * to match the request 9925 * <p>see WifiManager for details 9926 */ 9927 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9928 Message msg = Message.obtain(); 9929 msg.what = what; 9930 msg.arg2 = srcMsg.arg2; 9931 return msg; 9932 } 9933 9934 /** 9935 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9936 * @param msg Must have a WifiConfiguration obj to succeed 9937 */ 9938 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9939 WifiConfiguration config) { 9940 if (config != null && config.preSharedKey != null) { 9941 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9942 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9943 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9944 wifiCredentialEventType); 9945 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9946 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9947 } 9948 } 9949 9950 private static int parseHex(char ch) { 9951 if ('0' <= ch && ch <= '9') { 9952 return ch - '0'; 9953 } else if ('a' <= ch && ch <= 'f') { 9954 return ch - 'a' + 10; 9955 } else if ('A' <= ch && ch <= 'F') { 9956 return ch - 'A' + 10; 9957 } else { 9958 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9959 } 9960 } 9961 9962 private byte[] parseHex(String hex) { 9963 /* This only works for good input; don't throw bad data at it */ 9964 if (hex == null) { 9965 return new byte[0]; 9966 } 9967 9968 if (hex.length() % 2 != 0) { 9969 throw new NumberFormatException(hex + " is not a valid hex string"); 9970 } 9971 9972 byte[] result = new byte[(hex.length())/2 + 1]; 9973 result[0] = (byte) ((hex.length())/2); 9974 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9975 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9976 byte b = (byte) (val & 0xFF); 9977 result[j] = b; 9978 } 9979 9980 return result; 9981 } 9982 9983 private static String makeHex(byte[] bytes) { 9984 StringBuilder sb = new StringBuilder(); 9985 for (byte b : bytes) { 9986 sb.append(String.format("%02x", b)); 9987 } 9988 return sb.toString(); 9989 } 9990 9991 private static String makeHex(byte[] bytes, int from, int len) { 9992 StringBuilder sb = new StringBuilder(); 9993 for (int i = 0; i < len; i++) { 9994 sb.append(String.format("%02x", bytes[from+i])); 9995 } 9996 return sb.toString(); 9997 } 9998 9999 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 10000 10001 int len = array1.length + array2.length + array3.length; 10002 10003 if (array1.length != 0) { 10004 len++; /* add another byte for size */ 10005 } 10006 10007 if (array2.length != 0) { 10008 len++; /* add another byte for size */ 10009 } 10010 10011 if (array3.length != 0) { 10012 len++; /* add another byte for size */ 10013 } 10014 10015 byte[] result = new byte[len]; 10016 10017 int index = 0; 10018 if (array1.length != 0) { 10019 result[index] = (byte) (array1.length & 0xFF); 10020 index++; 10021 for (byte b : array1) { 10022 result[index] = b; 10023 index++; 10024 } 10025 } 10026 10027 if (array2.length != 0) { 10028 result[index] = (byte) (array2.length & 0xFF); 10029 index++; 10030 for (byte b : array2) { 10031 result[index] = b; 10032 index++; 10033 } 10034 } 10035 10036 if (array3.length != 0) { 10037 result[index] = (byte) (array3.length & 0xFF); 10038 index++; 10039 for (byte b : array3) { 10040 result[index] = b; 10041 index++; 10042 } 10043 } 10044 return result; 10045 } 10046 10047 private static byte[] concatHex(byte[] array1, byte[] array2) { 10048 10049 int len = array1.length + array2.length; 10050 10051 byte[] result = new byte[len]; 10052 10053 int index = 0; 10054 if (array1.length != 0) { 10055 for (byte b : array1) { 10056 result[index] = b; 10057 index++; 10058 } 10059 } 10060 10061 if (array2.length != 0) { 10062 for (byte b : array2) { 10063 result[index] = b; 10064 index++; 10065 } 10066 } 10067 10068 return result; 10069 } 10070 10071 void handleGsmAuthRequest(SimAuthRequestData requestData) { 10072 if (targetWificonfiguration == null 10073 || targetWificonfiguration.networkId == requestData.networkId) { 10074 logd("id matches targetWifiConfiguration"); 10075 } else { 10076 logd("id does not match targetWifiConfiguration"); 10077 return; 10078 } 10079 10080 TelephonyManager tm = (TelephonyManager) 10081 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10082 10083 if (tm != null) { 10084 StringBuilder sb = new StringBuilder(); 10085 for (String challenge : requestData.data) { 10086 10087 if (challenge == null || challenge.isEmpty()) 10088 continue; 10089 logd("RAND = " + challenge); 10090 10091 byte[] rand = null; 10092 try { 10093 rand = parseHex(challenge); 10094 } catch (NumberFormatException e) { 10095 loge("malformed challenge"); 10096 continue; 10097 } 10098 10099 String base64Challenge = android.util.Base64.encodeToString( 10100 rand, android.util.Base64.NO_WRAP); 10101 /* 10102 * First, try with appType = 2 => USIM according to 10103 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 10104 */ 10105 int appType = 2; 10106 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10107 if (tmResponse == null) { 10108 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 10109 * appType = 1 => SIM 10110 */ 10111 appType = 1; 10112 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10113 } 10114 logv("Raw Response - " + tmResponse); 10115 10116 if (tmResponse != null && tmResponse.length() > 4) { 10117 byte[] result = android.util.Base64.decode(tmResponse, 10118 android.util.Base64.DEFAULT); 10119 logv("Hex Response -" + makeHex(result)); 10120 int sres_len = result[0]; 10121 String sres = makeHex(result, 1, sres_len); 10122 int kc_offset = 1+sres_len; 10123 int kc_len = result[kc_offset]; 10124 String kc = makeHex(result, 1+kc_offset, kc_len); 10125 sb.append(":" + kc + ":" + sres); 10126 logv("kc:" + kc + " sres:" + sres); 10127 } else { 10128 loge("bad response - " + tmResponse); 10129 } 10130 } 10131 10132 String response = sb.toString(); 10133 logv("Supplicant Response -" + response); 10134 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 10135 } else { 10136 loge("could not get telephony manager"); 10137 } 10138 } 10139 10140 void handle3GAuthRequest(SimAuthRequestData requestData) { 10141 StringBuilder sb = new StringBuilder(); 10142 byte[] rand = null; 10143 byte[] authn = null; 10144 String res_type = "UMTS-AUTH"; 10145 10146 if (targetWificonfiguration == null 10147 || targetWificonfiguration.networkId == requestData.networkId) { 10148 logd("id matches targetWifiConfiguration"); 10149 } else { 10150 logd("id does not match targetWifiConfiguration"); 10151 return; 10152 } 10153 if (requestData.data.length == 2) { 10154 try { 10155 rand = parseHex(requestData.data[0]); 10156 authn = parseHex(requestData.data[1]); 10157 } catch (NumberFormatException e) { 10158 loge("malformed challenge"); 10159 } 10160 } else { 10161 loge("malformed challenge"); 10162 } 10163 10164 String tmResponse = ""; 10165 if (rand != null && authn != null) { 10166 String base64Challenge = android.util.Base64.encodeToString( 10167 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10168 10169 TelephonyManager tm = (TelephonyManager) 10170 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10171 if (tm != null) { 10172 int appType = 2; // 2 => USIM 10173 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10174 logv("Raw Response - " + tmResponse); 10175 } else { 10176 loge("could not get telephony manager"); 10177 } 10178 } 10179 10180 if (tmResponse != null && tmResponse.length() > 4) { 10181 byte[] result = android.util.Base64.decode(tmResponse, 10182 android.util.Base64.DEFAULT); 10183 loge("Hex Response - " + makeHex(result)); 10184 byte tag = result[0]; 10185 if (tag == (byte) 0xdb) { 10186 logv("successful 3G authentication "); 10187 int res_len = result[1]; 10188 String res = makeHex(result, 2, res_len); 10189 int ck_len = result[res_len + 2]; 10190 String ck = makeHex(result, res_len + 3, ck_len); 10191 int ik_len = result[res_len + ck_len + 3]; 10192 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10193 sb.append(":" + ik + ":" + ck + ":" + res); 10194 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10195 } else if (tag == (byte) 0xdc) { 10196 loge("synchronisation failure"); 10197 int auts_len = result[1]; 10198 String auts = makeHex(result, 2, auts_len); 10199 res_type = "UMTS-AUTS"; 10200 sb.append(":" + auts); 10201 logv("auts:" + auts); 10202 } else { 10203 loge("bad response - unknown tag = " + tag); 10204 return; 10205 } 10206 } else { 10207 loge("bad response - " + tmResponse); 10208 return; 10209 } 10210 10211 String response = sb.toString(); 10212 logv("Supplicant Response -" + response); 10213 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10214 } 10215 10216 /** 10217 * @param reason reason code from supplicant on network disconnected event 10218 * @return true if this is a suspicious disconnect 10219 */ 10220 static boolean unexpectedDisconnectedReason(int reason) { 10221 return reason == 2 // PREV_AUTH_NOT_VALID 10222 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10223 || reason == 7 // FRAME_FROM_NONASSOC_STA 10224 || reason == 8 // STA_HAS_LEFT 10225 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10226 || reason == 14 // MICHAEL_MIC_FAILURE 10227 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10228 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10229 || reason == 18 // GROUP_CIPHER_NOT_VALID 10230 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10231 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10232 || reason == 34; // DISASSOC_LOW_ACK 10233 } 10234} 10235