WifiStateMachine.java revision a8ed84c590e48ce3e5b31b2f3d0ddd53a22b6a65
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 DummyWifiLogger 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 // config option that indicate whether or not to reset country code to default when 926 // cellular radio indicates country code loss 927 private boolean mRevertCountryCodeOnCellularLoss = false; 928 929 private String mDefaultCountryCode; 930 931 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 932 933 // Supplicant doesn't like setting the same country code multiple times (it may drop 934 // currently connected network), so we save the current device set country code here to avoid 935 // redundency 936 private String mDriverSetCountryCode = null; 937 938 /* Default parent state */ 939 private State mDefaultState = new DefaultState(); 940 /* Temporary initial state */ 941 private State mInitialState = new InitialState(); 942 /* Driver loaded, waiting for supplicant to start */ 943 private State mSupplicantStartingState = new SupplicantStartingState(); 944 /* Driver loaded and supplicant ready */ 945 private State mSupplicantStartedState = new SupplicantStartedState(); 946 /* Waiting for supplicant to stop and monitor to exit */ 947 private State mSupplicantStoppingState = new SupplicantStoppingState(); 948 /* Driver start issued, waiting for completed event */ 949 private State mDriverStartingState = new DriverStartingState(); 950 /* Driver started */ 951 private State mDriverStartedState = new DriverStartedState(); 952 /* Wait until p2p is disabled 953 * This is a special state which is entered right after we exit out of DriverStartedState 954 * before transitioning to another state. 955 */ 956 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 957 /* Driver stopping */ 958 private State mDriverStoppingState = new DriverStoppingState(); 959 /* Driver stopped */ 960 private State mDriverStoppedState = new DriverStoppedState(); 961 /* Scan for networks, no connection will be established */ 962 private State mScanModeState = new ScanModeState(); 963 /* Connecting to an access point */ 964 private State mConnectModeState = new ConnectModeState(); 965 /* Connected at 802.11 (L2) level */ 966 private State mL2ConnectedState = new L2ConnectedState(); 967 /* fetching IP after connection to access point (assoc+auth complete) */ 968 private State mObtainingIpState = new ObtainingIpState(); 969 /* Waiting for link quality verification to be complete */ 970 private State mVerifyingLinkState = new VerifyingLinkState(); 971 /* Connected with IP addr */ 972 private State mConnectedState = new ConnectedState(); 973 /* Roaming */ 974 private State mRoamingState = new RoamingState(); 975 /* disconnect issued, waiting for network disconnect confirmation */ 976 private State mDisconnectingState = new DisconnectingState(); 977 /* Network is not connected, supplicant assoc+auth is not complete */ 978 private State mDisconnectedState = new DisconnectedState(); 979 /* Waiting for WPS to be completed*/ 980 private State mWpsRunningState = new WpsRunningState(); 981 982 /* Soft ap is starting up */ 983 private State mSoftApStartingState = new SoftApStartingState(); 984 /* Soft ap is running */ 985 private State mSoftApStartedState = new SoftApStartedState(); 986 /* Soft ap is running and we are waiting for tether notification */ 987 private State mTetheringState = new TetheringState(); 988 /* Soft ap is running and we are tethered through connectivity service */ 989 private State mTetheredState = new TetheredState(); 990 /* Waiting for untether confirmation before stopping soft Ap */ 991 private State mUntetheringState = new UntetheringState(); 992 993 994 995 private class WifiScanListener implements WifiScanner.ScanListener { 996 @Override 997 public void onSuccess() { 998 Log.e(TAG, "WifiScanListener onSuccess"); 999 }; 1000 @Override 1001 public void onFailure(int reason, String description) { 1002 Log.e(TAG, "WifiScanListener onFailure"); 1003 }; 1004 @Override 1005 public void onPeriodChanged(int periodInMs) { 1006 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1007 } 1008 @Override 1009 public void onResults(WifiScanner.ScanData[] results) { 1010 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1011 } 1012 @Override 1013 public void onFullResult(ScanResult fullScanResult) { 1014 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1015 } 1016 1017 WifiScanListener() {} 1018 } 1019 1020 WifiScanListener mWifiScanListener = new WifiScanListener(); 1021 1022 1023 private class TetherStateChange { 1024 ArrayList<String> available; 1025 ArrayList<String> active; 1026 1027 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1028 available = av; 1029 active = ac; 1030 } 1031 } 1032 1033 public static class SimAuthRequestData { 1034 int networkId; 1035 int protocol; 1036 String ssid; 1037 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1038 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1039 String[] data; 1040 } 1041 1042 /** 1043 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1044 * {@link WifiManager#WIFI_STATE_DISABLING}, 1045 * {@link WifiManager#WIFI_STATE_ENABLED}, 1046 * {@link WifiManager#WIFI_STATE_ENABLING}, 1047 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1048 */ 1049 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1050 1051 /** 1052 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1053 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1054 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1055 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1056 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1057 */ 1058 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1059 1060 private static final int SCAN_REQUEST = 0; 1061 private static final String ACTION_START_SCAN = 1062 "com.android.server.WifiManager.action.START_SCAN"; 1063 1064 private static final int PNO_START_REQUEST = 0; 1065 private static final String ACTION_START_PNO = 1066 "com.android.server.WifiManager.action.START_PNO"; 1067 1068 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1069 private static final int DRIVER_STOP_REQUEST = 0; 1070 private static final String ACTION_DELAYED_DRIVER_STOP = 1071 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1072 1073 /** 1074 * Keep track of whether WIFI is running. 1075 */ 1076 private boolean mIsRunning = false; 1077 1078 /** 1079 * Keep track of whether we last told the battery stats we had started. 1080 */ 1081 private boolean mReportedRunning = false; 1082 1083 /** 1084 * Most recently set source of starting WIFI. 1085 */ 1086 private final WorkSource mRunningWifiUids = new WorkSource(); 1087 1088 /** 1089 * The last reported UIDs that were responsible for starting WIFI. 1090 */ 1091 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1092 1093 private final IBatteryStats mBatteryStats; 1094 1095 private String mTcpBufferSizes = null; 1096 1097 // Used for debug and stats gathering 1098 private static int sScanAlarmIntentCount = 0; 1099 1100 final static int frameworkMinScanIntervalSaneValue = 10000; 1101 1102 boolean mPnoEnabled; 1103 boolean mLazyRoamEnabled; 1104 long mGScanStartTimeMilli; 1105 long mGScanPeriodMilli; 1106 1107 public WifiStateMachine(Context context, String wlanInterface, 1108 WifiTrafficPoller trafficPoller) { 1109 super("WifiStateMachine"); 1110 mContext = context; 1111 mInterfaceName = wlanInterface; 1112 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1113 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1114 BatteryStats.SERVICE_NAME)); 1115 1116 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1117 mNwService = INetworkManagementService.Stub.asInterface(b); 1118 1119 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1120 PackageManager.FEATURE_WIFI_DIRECT); 1121 1122 mWifiNative = new WifiNative(mInterfaceName); 1123 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1124 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1125 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1126 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1127 1128 boolean enableFirmwareLogs = mContext.getResources().getBoolean( 1129 R.bool.config_wifi_enable_wifi_firmware_debugging); 1130 1131 if (enableFirmwareLogs) { 1132 mWifiLogger = new WifiLogger(this); 1133 } else { 1134 mWifiLogger = new DummyWifiLogger(); 1135 } 1136 1137 mWifiInfo = new WifiInfo(); 1138 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1139 getHandler()); 1140 mLinkProperties = new LinkProperties(); 1141 1142 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1143 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1144 1145 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1146 1147 mNetworkInfo.setIsAvailable(false); 1148 mLastBssid = null; 1149 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1150 mLastSignalLevel = -1; 1151 1152 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1153 public void update() { 1154 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1155 } 1156 }); 1157 try { 1158 mNwService.registerObserver(mNetlinkTracker); 1159 } catch (RemoteException e) { 1160 loge("Couldn't register netlink tracker: " + e.toString()); 1161 } 1162 1163 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1164 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1165 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1166 1167 // Make sure the interval is not configured less than 10 seconds 1168 int period = mContext.getResources().getInteger( 1169 R.integer.config_wifi_framework_scan_interval); 1170 if (period < frameworkMinScanIntervalSaneValue) { 1171 period = frameworkMinScanIntervalSaneValue; 1172 } 1173 mDefaultFrameworkScanIntervalMs = period; 1174 1175 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1176 R.integer.config_wifi_no_network_periodic_scan_interval); 1177 1178 mDriverStopDelayMs = mContext.getResources().getInteger( 1179 R.integer.config_wifi_driver_stop_delay); 1180 1181 mBackgroundScanSupported = mContext.getResources().getBoolean( 1182 R.bool.config_wifi_background_scan_support); 1183 1184 mPrimaryDeviceType = mContext.getResources().getString( 1185 R.string.config_wifi_p2p_device_type); 1186 1187 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1188 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1189 1190 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1191 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1192 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1193 } 1194 1195 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1196 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1197 "but there is no default country code!! Resetting ..."); 1198 mRevertCountryCodeOnCellularLoss = false; 1199 } else if (mRevertCountryCodeOnCellularLoss) { 1200 logd("initializing with and will revert to " + mDefaultCountryCode + " on MCC loss"); 1201 } 1202 1203 if (mRevertCountryCodeOnCellularLoss) { 1204 Settings.Global.putString(mContext.getContentResolver(), 1205 Settings.Global.WIFI_COUNTRY_CODE, mDefaultCountryCode); 1206 } 1207 1208 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1209 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1210 1211 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1212 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1213 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1214 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1215 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1216 // TODO - needs to be a bit more dynamic 1217 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1218 1219 mContext.registerReceiver( 1220 new BroadcastReceiver() { 1221 @Override 1222 public void onReceive(Context context, Intent intent) { 1223 ArrayList<String> available = intent.getStringArrayListExtra( 1224 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1225 ArrayList<String> active = intent.getStringArrayListExtra( 1226 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1227 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1228 } 1229 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1230 1231 mContext.registerReceiver( 1232 new BroadcastReceiver() { 1233 @Override 1234 public void onReceive(Context context, Intent intent) { 1235 sScanAlarmIntentCount++; // Used for debug only 1236 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1237 if (VDBG) 1238 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1239 } 1240 }, 1241 new IntentFilter(ACTION_START_SCAN)); 1242 1243 mContext.registerReceiver( 1244 new BroadcastReceiver() { 1245 @Override 1246 public void onReceive(Context context, Intent intent) { 1247 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1248 mRestartAutoJoinOffloadCounter, "pno alarm"); 1249 if (DBG) 1250 logd("PNO START ALARM sent"); 1251 } 1252 }, 1253 new IntentFilter(ACTION_START_PNO)); 1254 1255 1256 IntentFilter filter = new IntentFilter(); 1257 filter.addAction(Intent.ACTION_SCREEN_ON); 1258 filter.addAction(Intent.ACTION_SCREEN_OFF); 1259 mContext.registerReceiver( 1260 new BroadcastReceiver() { 1261 @Override 1262 public void onReceive(Context context, Intent intent) { 1263 String action = intent.getAction(); 1264 1265 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1266 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1267 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1268 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1269 } 1270 } 1271 }, filter); 1272 1273 mContext.registerReceiver( 1274 new BroadcastReceiver() { 1275 @Override 1276 public void onReceive(Context context, Intent intent) { 1277 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1278 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1279 } 1280 }, 1281 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1282 1283 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1284 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1285 new ContentObserver(getHandler()) { 1286 @Override 1287 public void onChange(boolean selfChange) { 1288 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1289 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1290 } 1291 }); 1292 1293 mContext.registerReceiver( 1294 new BroadcastReceiver() { 1295 @Override 1296 public void onReceive(Context context, Intent intent) { 1297 sendMessage(CMD_BOOT_COMPLETED); 1298 } 1299 }, 1300 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1301 1302 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1303 1304 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1305 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1306 1307 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1308 mSuspendWakeLock.setReferenceCounted(false); 1309 1310 mTcpBufferSizes = mContext.getResources().getString( 1311 com.android.internal.R.string.config_wifi_tcp_buffers); 1312 1313 addState(mDefaultState); 1314 addState(mInitialState, mDefaultState); 1315 addState(mSupplicantStartingState, mDefaultState); 1316 addState(mSupplicantStartedState, mDefaultState); 1317 addState(mDriverStartingState, mSupplicantStartedState); 1318 addState(mDriverStartedState, mSupplicantStartedState); 1319 addState(mScanModeState, mDriverStartedState); 1320 addState(mConnectModeState, mDriverStartedState); 1321 addState(mL2ConnectedState, mConnectModeState); 1322 addState(mObtainingIpState, mL2ConnectedState); 1323 addState(mVerifyingLinkState, mL2ConnectedState); 1324 addState(mConnectedState, mL2ConnectedState); 1325 addState(mRoamingState, mL2ConnectedState); 1326 addState(mDisconnectingState, mConnectModeState); 1327 addState(mDisconnectedState, mConnectModeState); 1328 addState(mWpsRunningState, mConnectModeState); 1329 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1330 addState(mDriverStoppingState, mSupplicantStartedState); 1331 addState(mDriverStoppedState, mSupplicantStartedState); 1332 addState(mSupplicantStoppingState, mDefaultState); 1333 addState(mSoftApStartingState, mDefaultState); 1334 addState(mSoftApStartedState, mDefaultState); 1335 addState(mTetheringState, mSoftApStartedState); 1336 addState(mTetheredState, mSoftApStartedState); 1337 addState(mUntetheringState, mSoftApStartedState); 1338 1339 setInitialState(mInitialState); 1340 1341 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1342 setLogOnlyTransitions(false); 1343 if (VDBG) setDbg(true); 1344 1345 //start the state machine 1346 start(); 1347 1348 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1349 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1350 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1351 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1352 } 1353 1354 1355 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1356 Intent intent = new Intent(action, null); 1357 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1358 // TODO: Find the correct value so this is not hard coded 1359 intent.setPackage("android"); 1360 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1361 } 1362 1363 private int mVerboseLoggingLevel = 0; 1364 1365 int getVerboseLoggingLevel() { 1366 return mVerboseLoggingLevel; 1367 } 1368 1369 void enableVerboseLogging(int verbose) { 1370 mVerboseLoggingLevel = verbose; 1371 if (verbose > 0) { 1372 DBG = true; 1373 VDBG = true; 1374 PDBG = true; 1375 mLogMessages = true; 1376 mWifiNative.setSupplicantLogLevel("DEBUG"); 1377 } else { 1378 DBG = false; 1379 VDBG = false; 1380 PDBG = false; 1381 mLogMessages = false; 1382 mWifiNative.setSupplicantLogLevel("INFO"); 1383 } 1384 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1385 mWifiAutoJoinController.enableVerboseLogging(verbose); 1386 mWifiMonitor.enableVerboseLogging(verbose); 1387 mWifiNative.enableVerboseLogging(verbose); 1388 mWifiConfigStore.enableVerboseLogging(verbose); 1389 mSupplicantStateTracker.enableVerboseLogging(verbose); 1390 } 1391 1392 public void setHalBasedAutojoinOffload(int enabled) { 1393 // Shoult be used for debug only, triggered form developper settings 1394 // enabling HAl based PNO dynamically is not safe and not a normal operation 1395 mHalBasedPnoEnableInDevSettings = enabled > 0; 1396 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1397 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1398 sendMessage(CMD_DISCONNECT); 1399 } 1400 1401 int getHalBasedAutojoinOffload() { 1402 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1403 } 1404 1405 boolean useHalBasedAutoJoinOffload() { 1406 // all three settings need to be true: 1407 // - developper settings switch 1408 // - driver support 1409 // - config option 1410 return mHalBasedPnoEnableInDevSettings 1411 && mHalBasedPnoDriverSupported 1412 && mWifiConfigStore.enableHalBasedPno.get(); 1413 } 1414 1415 boolean allowFullBandScanAndAssociated() { 1416 1417 if (!getEnableAutoJoinWhenAssociated()) { 1418 if (DBG) { 1419 Log.e(TAG, "allowFullBandScanAndAssociated: " 1420 + " enableAutoJoinWhenAssociated : disallow"); 1421 } 1422 return false; 1423 } 1424 1425 if (mWifiInfo.txSuccessRate > 1426 mWifiConfigStore.maxTxPacketForFullScans 1427 || mWifiInfo.rxSuccessRate > 1428 mWifiConfigStore.maxRxPacketForFullScans) { 1429 if (DBG) { 1430 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1431 + mWifiInfo.txSuccessRate + " rx " 1432 + mWifiInfo.rxSuccessRate 1433 + " allow scan with traffic " + getAllowScansWithTraffic()); 1434 } 1435 // Too much traffic at the interface, hence no full band scan 1436 if (getAllowScansWithTraffic() == 0) { 1437 return false; 1438 } 1439 } 1440 1441 if (getCurrentState() != mConnectedState) { 1442 if (DBG) { 1443 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1444 } 1445 return false; 1446 } 1447 1448 return true; 1449 } 1450 1451 long mLastScanPermissionUpdate = 0; 1452 boolean mConnectedModeGScanOffloadStarted = false; 1453 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1454 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1455 // we want to throttle the GScan Stop->Start transition 1456 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1457 void updateAssociatedScanPermission() { 1458 1459 if (useHalBasedAutoJoinOffload()) { 1460 boolean allowed = allowFullBandScanAndAssociated(); 1461 1462 long now = System.currentTimeMillis(); 1463 if (mConnectedModeGScanOffloadStarted && !allowed) { 1464 if (DBG) { 1465 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1466 } 1467 stopPnoOffload(); 1468 stopGScan(" useHalBasedAutoJoinOffload"); 1469 } 1470 if (!mConnectedModeGScanOffloadStarted && allowed) { 1471 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1472 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1473 // to look for 5GHz BSSIDs and better networks 1474 if (DBG) { 1475 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1476 } 1477 startGScanConnectedModeOffload("updatePermission " 1478 + (now - mLastScanPermissionUpdate) + "ms"); 1479 mLastScanPermissionUpdate = now; 1480 } 1481 } 1482 } 1483 } 1484 1485 private int mAggressiveHandover = 0; 1486 1487 int getAggressiveHandover() { 1488 return mAggressiveHandover; 1489 } 1490 1491 void enableAggressiveHandover(int enabled) { 1492 mAggressiveHandover = enabled; 1493 } 1494 1495 public void clearANQPCache() { 1496 mWifiConfigStore.trimANQPCache(true); 1497 } 1498 1499 public void setAllowScansWithTraffic(int enabled) { 1500 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1501 } 1502 1503 public int getAllowScansWithTraffic() { 1504 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1505 } 1506 1507 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1508 boolean old_state = getEnableAutoJoinWhenAssociated(); 1509 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1510 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1511 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1512 null); 1513 } 1514 return true; 1515 } 1516 1517 public boolean getEnableAutoJoinWhenAssociated() { 1518 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1519 } 1520 /* 1521 * 1522 * Framework scan control 1523 */ 1524 1525 private boolean mAlarmEnabled = false; 1526 1527 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1528 1529 private void setScanAlarm(boolean enabled) { 1530 if (PDBG) { 1531 String state; 1532 if (enabled) state = "enabled"; else state = "disabled"; 1533 logd("setScanAlarm " + state 1534 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1535 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1536 } 1537 if (mBackgroundScanSupported == false) { 1538 // Scan alarm is only used for background scans if they are not 1539 // offloaded to the wifi chipset, hence enable the scan alarm 1540 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1541 enabled = true; 1542 } 1543 1544 if (enabled == mAlarmEnabled) return; 1545 if (enabled) { 1546 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1547 /* going to wake up the host processor to look for access points */ 1548 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1549 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1550 mScanIntent); 1551 mAlarmEnabled = true; 1552 } else { 1553 mAlarmManager.cancel(mScanIntent); 1554 mAlarmEnabled = false; 1555 } 1556 } 1557 1558 private void cancelDelayedScan() { 1559 mDelayedScanCounter.incrementAndGet(); 1560 } 1561 1562 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1563 ScanSettings settings, WorkSource workSource) { 1564 1565 if (counter != mDelayedScanCounter.get()) { 1566 return false; 1567 } 1568 if (restart) 1569 startDelayedScan(milli, settings, workSource); 1570 return true; 1571 } 1572 1573 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1574 if (milli <= 0) return; 1575 /** 1576 * The cases where the scan alarm should be run are : 1577 * - DisconnectedState && screenOn => used delayed timer 1578 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1579 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1580 * - ConnectedState && screenOn => used delayed timer 1581 */ 1582 1583 mDelayedScanCounter.incrementAndGet(); 1584 if (mScreenOn && 1585 (getCurrentState() == mDisconnectedState 1586 || getCurrentState() == mConnectedState)) { 1587 Bundle bundle = new Bundle(); 1588 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1589 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1590 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1591 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1592 mDelayedScanCounter.get(), bundle, milli); 1593 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1594 } else if (mBackgroundScanSupported == false 1595 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1596 setScanAlarm(true); 1597 if (DBG) logd("startDelayedScan start scan alarm -> " 1598 + mDelayedScanCounter + " milli " + milli); 1599 } else { 1600 if (DBG) logd("startDelayedScan unhandled -> " 1601 + mDelayedScanCounter + " milli " + milli); 1602 } 1603 } 1604 1605 private boolean setRandomMacOui() { 1606 String oui = mContext.getResources().getString( 1607 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1608 String[] ouiParts = oui.split("-"); 1609 byte[] ouiBytes = new byte[3]; 1610 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1611 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1612 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1613 1614 logd("Setting OUI to " + oui); 1615 return mWifiNative.setScanningMacOui(ouiBytes); 1616 } 1617 1618 /** 1619 * ****************************************************** 1620 * Methods exposed for public use 1621 * ****************************************************** 1622 */ 1623 1624 public Messenger getMessenger() { 1625 return new Messenger(getHandler()); 1626 } 1627 1628 public WifiMonitor getWifiMonitor() { 1629 return mWifiMonitor; 1630 } 1631 1632 /** 1633 * TODO: doc 1634 */ 1635 public boolean syncPingSupplicant(AsyncChannel channel) { 1636 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1637 boolean result = (resultMsg.arg1 != FAILURE); 1638 resultMsg.recycle(); 1639 return result; 1640 } 1641 1642 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1643 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1644 List<WifiChannel> list = null; 1645 if (resultMsg.obj != null) { 1646 list = new ArrayList<WifiChannel>(); 1647 String freqs = (String) resultMsg.obj; 1648 String[] lines = freqs.split("\n"); 1649 for (String line : lines) 1650 if (line.contains("MHz")) { 1651 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1652 WifiChannel c = new WifiChannel(); 1653 String[] prop = line.split(" "); 1654 if (prop.length < 5) continue; 1655 try { 1656 c.channelNum = Integer.parseInt(prop[1]); 1657 c.freqMHz = Integer.parseInt(prop[3]); 1658 } catch (NumberFormatException e) { 1659 } 1660 c.isDFS = line.contains("(DFS)"); 1661 list.add(c); 1662 } else if (line.contains("Mode[B] Channels:")) { 1663 // B channels are the same as G channels, skipped 1664 break; 1665 } 1666 } 1667 resultMsg.recycle(); 1668 return (list != null && list.size() > 0) ? list : null; 1669 } 1670 1671 /** 1672 * When settings allowing making use of untrusted networks change, trigger a scan 1673 * so as to kick of autojoin. 1674 */ 1675 public void startScanForUntrustedSettingChange() { 1676 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1677 } 1678 1679 /** 1680 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1681 * given to callingUid. 1682 * 1683 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1684 * workSource is specified. 1685 * @param workSource If not null, blame is given to workSource. 1686 * @param settings Scan settings, see {@link ScanSettings}. 1687 */ 1688 public void startScan(int callingUid, int scanCounter, 1689 ScanSettings settings, WorkSource workSource) { 1690 Bundle bundle = new Bundle(); 1691 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1692 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1693 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1694 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1695 } 1696 1697 // called from BroadcastListener 1698 1699 /** 1700 * Start reading new scan data 1701 * Data comes in as: 1702 * "scancount=5\n" 1703 * "nextcount=5\n" 1704 * "apcount=3\n" 1705 * "trunc\n" (optional) 1706 * "bssid=...\n" 1707 * "ssid=...\n" 1708 * "freq=...\n" (in Mhz) 1709 * "level=...\n" 1710 * "dist=...\n" (in cm) 1711 * "distsd=...\n" (standard deviation, in cm) 1712 * "====" 1713 * "bssid=...\n" 1714 * etc 1715 * "====" 1716 * "bssid=...\n" 1717 * etc 1718 * "%%%%" 1719 * "apcount=2\n" 1720 * "bssid=...\n" 1721 * etc 1722 * "%%%% 1723 * etc 1724 * "----" 1725 */ 1726 private final static boolean DEBUG_PARSE = false; 1727 1728 private long mDisconnectedTimeStamp = 0; 1729 1730 public long getDisconnectedTimeMilli() { 1731 if (getCurrentState() == mDisconnectedState 1732 && mDisconnectedTimeStamp != 0) { 1733 long now_ms = System.currentTimeMillis(); 1734 return now_ms - mDisconnectedTimeStamp; 1735 } 1736 return 0; 1737 } 1738 1739 // Keeping track of scan requests 1740 private long lastStartScanTimeStamp = 0; 1741 private long lastScanDuration = 0; 1742 // Last connect attempt is used to prevent scan requests: 1743 // - for a period of 10 seconds after attempting to connect 1744 private long lastConnectAttemptTimestamp = 0; 1745 private String lastScanFreqs = null; 1746 1747 // For debugging, keep track of last message status handling 1748 // TODO, find an equivalent mechanism as part of parent class 1749 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1750 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1751 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1752 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1753 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1754 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1755 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1756 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1757 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1758 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1759 1760 private int messageHandlingStatus = 0; 1761 1762 //TODO: this is used only to track connection attempts, however the link state and packet per 1763 //TODO: second logic should be folded into that 1764 private boolean checkOrDeferScanAllowed(Message msg) { 1765 long now = System.currentTimeMillis(); 1766 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1767 Message dmsg = Message.obtain(msg); 1768 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1769 return false; 1770 } 1771 return true; 1772 } 1773 1774 private int mOnTime = 0; 1775 private int mTxTime = 0; 1776 private int mRxTime = 0; 1777 private int mOnTimeStartScan = 0; 1778 private int mTxTimeStartScan = 0; 1779 private int mRxTimeStartScan = 0; 1780 private int mOnTimeScan = 0; 1781 private int mTxTimeScan = 0; 1782 private int mRxTimeScan = 0; 1783 private int mOnTimeThisScan = 0; 1784 private int mTxTimeThisScan = 0; 1785 private int mRxTimeThisScan = 0; 1786 1787 private int mOnTimeScreenStateChange = 0; 1788 private int mOnTimeAtLastReport = 0; 1789 private long lastOntimeReportTimeStamp = 0; 1790 private long lastScreenStateChangeTimeStamp = 0; 1791 private int mOnTimeLastReport = 0; 1792 private int mTxTimeLastReport = 0; 1793 private int mRxTimeLastReport = 0; 1794 1795 private long lastLinkLayerStatsUpdate = 0; 1796 1797 String reportOnTime() { 1798 long now = System.currentTimeMillis(); 1799 StringBuilder sb = new StringBuilder(); 1800 // Report stats since last report 1801 int on = mOnTime - mOnTimeLastReport; 1802 mOnTimeLastReport = mOnTime; 1803 int tx = mTxTime - mTxTimeLastReport; 1804 mTxTimeLastReport = mTxTime; 1805 int rx = mRxTime - mRxTimeLastReport; 1806 mRxTimeLastReport = mRxTime; 1807 int period = (int) (now - lastOntimeReportTimeStamp); 1808 lastOntimeReportTimeStamp = now; 1809 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1810 // Report stats since Screen State Changed 1811 on = mOnTime - mOnTimeScreenStateChange; 1812 period = (int) (now - lastScreenStateChangeTimeStamp); 1813 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1814 return sb.toString(); 1815 } 1816 1817 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1818 WifiLinkLayerStats stats = null; 1819 if (mWifiLinkLayerStatsSupported > 0) { 1820 String name = "wlan0"; 1821 stats = mWifiNative.getWifiLinkLayerStats(name); 1822 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1823 mWifiLinkLayerStatsSupported -= 1; 1824 } else if (stats != null) { 1825 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1826 mOnTime = stats.on_time; 1827 mTxTime = stats.tx_time; 1828 mRxTime = stats.rx_time; 1829 mRunningBeaconCount = stats.beacon_rx; 1830 } 1831 } 1832 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1833 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1834 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1835 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1836 } else { 1837 mWifiInfo.updatePacketRates(stats); 1838 } 1839 if (useHalBasedAutoJoinOffload()) { 1840 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1841 } 1842 return stats; 1843 } 1844 1845 void startRadioScanStats() { 1846 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1847 if (stats != null) { 1848 mOnTimeStartScan = stats.on_time; 1849 mTxTimeStartScan = stats.tx_time; 1850 mRxTimeStartScan = stats.rx_time; 1851 mOnTime = stats.on_time; 1852 mTxTime = stats.tx_time; 1853 mRxTime = stats.rx_time; 1854 } 1855 } 1856 1857 void closeRadioScanStats() { 1858 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1859 if (stats != null) { 1860 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1861 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1862 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1863 mOnTimeScan += mOnTimeThisScan; 1864 mTxTimeScan += mTxTimeThisScan; 1865 mRxTimeScan += mRxTimeThisScan; 1866 } 1867 } 1868 1869 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1870 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1871 if (ret != 0) { 1872 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1873 "): hardware error " + ret); 1874 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1875 } else { 1876 return ConnectivityManager.PacketKeepalive.SUCCESS; 1877 } 1878 } 1879 1880 int stopWifiIPPacketOffload(int slot) { 1881 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1882 if (ret != 0) { 1883 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1884 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1885 } else { 1886 return ConnectivityManager.PacketKeepalive.SUCCESS; 1887 } 1888 } 1889 1890 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1891 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1892 } 1893 1894 int stopRssiMonitoringOffload() { 1895 return mWifiNative.stopRssiMonitoring(); 1896 } 1897 1898 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1899 private void noteScanStart(int callingUid, WorkSource workSource) { 1900 if (lastStartScanTimeStamp != 0) { 1901 noteScanEnd(); 1902 } 1903 long now = System.currentTimeMillis(); 1904 lastStartScanTimeStamp = now; 1905 lastScanDuration = 0; 1906 if (DBG) { 1907 String ts = String.format("[%,d ms]", now); 1908 if (workSource != null) { 1909 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1910 + " uid " + Integer.toString(callingUid)); 1911 } else { 1912 if (DBG) logd(ts + " noteScanstart no scan source" 1913 + " uid " + Integer.toString(callingUid)); 1914 } 1915 } 1916 startRadioScanStats(); 1917 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1918 && callingUid != SCAN_ALARM_SOURCE) 1919 || workSource != null)) { 1920 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1921 1922 WorkSource batteryWorkSource = mScanWorkSource; 1923 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1924 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1925 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1926 } 1927 1928 try { 1929 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1930 } catch (RemoteException e) { 1931 log(e.toString()); 1932 } 1933 } 1934 } 1935 1936 private void noteScanEnd() { 1937 closeRadioScanStats(); 1938 long now = System.currentTimeMillis(); 1939 if (lastStartScanTimeStamp != 0) { 1940 lastScanDuration = now - lastStartScanTimeStamp; 1941 } 1942 lastStartScanTimeStamp = 0; 1943 if (DBG) { 1944 String ts = String.format("[%,d ms]", now); 1945 if (mScanWorkSource != null) 1946 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 1947 + " onTime=" + mOnTimeThisScan); 1948 else 1949 logd(ts + " noteScanEnd no scan source" 1950 + " onTime=" + mOnTimeThisScan); 1951 } 1952 if (mScanWorkSource != null) { 1953 try { 1954 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1955 } catch (RemoteException e) { 1956 log(e.toString()); 1957 } finally { 1958 mScanWorkSource = null; 1959 } 1960 } 1961 } 1962 1963 private void handleScanRequest(int type, Message message) { 1964 ScanSettings settings = null; 1965 WorkSource workSource = null; 1966 1967 // unbundle parameters 1968 Bundle bundle = (Bundle) message.obj; 1969 1970 if (bundle != null) { 1971 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1972 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1973 } 1974 1975 // parse scan settings 1976 String freqs = null; 1977 if (settings != null && settings.channelSet != null) { 1978 StringBuilder sb = new StringBuilder(); 1979 boolean first = true; 1980 for (WifiChannel channel : settings.channelSet) { 1981 if (!first) sb.append(','); 1982 else first = false; 1983 sb.append(channel.freqMHz); 1984 } 1985 freqs = sb.toString(); 1986 } 1987 1988 // call wifi native to start the scan 1989 if (startScanNative(type, freqs)) { 1990 // only count battery consumption if scan request is accepted 1991 noteScanStart(message.arg1, workSource); 1992 // a full scan covers everything, clearing scan request buffer 1993 if (freqs == null) 1994 mBufferedScanMsg.clear(); 1995 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1996 if (workSource != null) { 1997 // External worksource was passed along the scan request, 1998 // hence always send a broadcast 1999 mSendScanResultsBroadcast = true; 2000 } 2001 return; 2002 } 2003 2004 // if reach here, scan request is rejected 2005 2006 if (!mIsScanOngoing) { 2007 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2008 2009 // discard this request and pop up the next one 2010 if (mBufferedScanMsg.size() > 0) { 2011 sendMessage(mBufferedScanMsg.remove()); 2012 } 2013 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2014 } else if (!mIsFullScanOngoing) { 2015 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2016 // buffer the scan request to make sure specified channels will be scanned eventually 2017 if (freqs == null) 2018 mBufferedScanMsg.clear(); 2019 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2020 Message msg = obtainMessage(CMD_START_SCAN, 2021 message.arg1, message.arg2, bundle); 2022 mBufferedScanMsg.add(msg); 2023 } else { 2024 // if too many requests in buffer, combine them into a single full scan 2025 bundle = new Bundle(); 2026 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2027 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2028 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2029 mBufferedScanMsg.clear(); 2030 mBufferedScanMsg.add(msg); 2031 } 2032 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2033 } else { 2034 // mIsScanOngoing and mIsFullScanOngoing 2035 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2036 } 2037 } 2038 2039 2040 /** 2041 * return true iff scan request is accepted 2042 */ 2043 private boolean startScanNative(int type, String freqs) { 2044 if (mWifiNative.scan(type, freqs)) { 2045 mIsScanOngoing = true; 2046 mIsFullScanOngoing = (freqs == null); 2047 lastScanFreqs = freqs; 2048 return true; 2049 } 2050 return false; 2051 } 2052 2053 /** 2054 * TODO: doc 2055 */ 2056 public void setSupplicantRunning(boolean enable) { 2057 if (enable) { 2058 sendMessage(CMD_START_SUPPLICANT); 2059 } else { 2060 sendMessage(CMD_STOP_SUPPLICANT); 2061 } 2062 } 2063 2064 /** 2065 * TODO: doc 2066 */ 2067 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2068 if (enable) { 2069 sendMessage(CMD_START_AP, wifiConfig); 2070 } else { 2071 sendMessage(CMD_STOP_AP); 2072 } 2073 } 2074 2075 public void setWifiApConfiguration(WifiConfiguration config) { 2076 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2077 } 2078 2079 public WifiConfiguration syncGetWifiApConfiguration() { 2080 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2081 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2082 resultMsg.recycle(); 2083 return ret; 2084 } 2085 2086 /** 2087 * TODO: doc 2088 */ 2089 public int syncGetWifiState() { 2090 return mWifiState.get(); 2091 } 2092 2093 /** 2094 * TODO: doc 2095 */ 2096 public String syncGetWifiStateByName() { 2097 switch (mWifiState.get()) { 2098 case WIFI_STATE_DISABLING: 2099 return "disabling"; 2100 case WIFI_STATE_DISABLED: 2101 return "disabled"; 2102 case WIFI_STATE_ENABLING: 2103 return "enabling"; 2104 case WIFI_STATE_ENABLED: 2105 return "enabled"; 2106 case WIFI_STATE_UNKNOWN: 2107 return "unknown state"; 2108 default: 2109 return "[invalid state]"; 2110 } 2111 } 2112 2113 /** 2114 * TODO: doc 2115 */ 2116 public int syncGetWifiApState() { 2117 return mWifiApState.get(); 2118 } 2119 2120 /** 2121 * TODO: doc 2122 */ 2123 public String syncGetWifiApStateByName() { 2124 switch (mWifiApState.get()) { 2125 case WIFI_AP_STATE_DISABLING: 2126 return "disabling"; 2127 case WIFI_AP_STATE_DISABLED: 2128 return "disabled"; 2129 case WIFI_AP_STATE_ENABLING: 2130 return "enabling"; 2131 case WIFI_AP_STATE_ENABLED: 2132 return "enabled"; 2133 case WIFI_AP_STATE_FAILED: 2134 return "failed"; 2135 default: 2136 return "[invalid state]"; 2137 } 2138 } 2139 2140 /** 2141 * Get status information for the current connection, if any. 2142 * 2143 * @return a {@link WifiInfo} object containing information about the current connection 2144 */ 2145 public WifiInfo syncRequestConnectionInfo() { 2146 return getWiFiInfoForUid(Binder.getCallingUid()); 2147 } 2148 2149 public DhcpResults syncGetDhcpResults() { 2150 synchronized (mDhcpResultsLock) { 2151 return new DhcpResults(mDhcpResults); 2152 } 2153 } 2154 2155 /** 2156 * TODO: doc 2157 */ 2158 public void setDriverStart(boolean enable) { 2159 if (enable) { 2160 sendMessage(CMD_START_DRIVER); 2161 } else { 2162 sendMessage(CMD_STOP_DRIVER); 2163 } 2164 } 2165 2166 /** 2167 * TODO: doc 2168 */ 2169 public void setOperationalMode(int mode) { 2170 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2171 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2172 } 2173 2174 /** 2175 * TODO: doc 2176 */ 2177 public List<ScanResult> syncGetScanResultsList() { 2178 synchronized (mScanResultCache) { 2179 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2180 for (ScanDetail result : mScanResults) { 2181 scanList.add(new ScanResult(result.getScanResult())); 2182 } 2183 return scanList; 2184 } 2185 } 2186 2187 public void disableEphemeralNetwork(String SSID) { 2188 if (SSID != null) { 2189 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2190 } 2191 } 2192 2193 /** 2194 * Get unsynchronized pointer to scan result list 2195 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2196 */ 2197 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2198 return mScanResults; 2199 } 2200 2201 /** 2202 * Disconnect from Access Point 2203 */ 2204 public void disconnectCommand() { 2205 sendMessage(CMD_DISCONNECT); 2206 } 2207 2208 public void disconnectCommand(int uid, int reason) { 2209 sendMessage(CMD_DISCONNECT, uid, reason); 2210 } 2211 2212 /** 2213 * Initiate a reconnection to AP 2214 */ 2215 public void reconnectCommand() { 2216 sendMessage(CMD_RECONNECT); 2217 } 2218 2219 /** 2220 * Initiate a re-association to AP 2221 */ 2222 public void reassociateCommand() { 2223 sendMessage(CMD_REASSOCIATE); 2224 } 2225 2226 /** 2227 * Reload networks and then reconnect; helps load correct data for TLS networks 2228 */ 2229 2230 public void reloadTlsNetworksAndReconnect() { 2231 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2232 } 2233 2234 /** 2235 * Add a network synchronously 2236 * 2237 * @return network id of the new network 2238 */ 2239 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2240 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2241 int result = resultMsg.arg1; 2242 resultMsg.recycle(); 2243 return result; 2244 } 2245 2246 /** 2247 * Get configured networks synchronously 2248 * 2249 * @param channel 2250 * @return 2251 */ 2252 2253 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2254 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2255 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2256 resultMsg.recycle(); 2257 return result; 2258 } 2259 2260 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2261 Message resultMsg = channel.sendMessageSynchronously( 2262 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2263 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2264 resultMsg.recycle(); 2265 return result; 2266 } 2267 2268 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2269 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2270 return (WifiConfiguration) resultMsg.obj; 2271 } 2272 2273 /** 2274 * Get connection statistics synchronously 2275 * 2276 * @param channel 2277 * @return 2278 */ 2279 2280 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2281 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2282 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2283 resultMsg.recycle(); 2284 return result; 2285 } 2286 2287 /** 2288 * Get adaptors synchronously 2289 */ 2290 2291 public int syncGetSupportedFeatures(AsyncChannel channel) { 2292 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2293 int supportedFeatureSet = resultMsg.arg1; 2294 resultMsg.recycle(); 2295 return supportedFeatureSet; 2296 } 2297 2298 /** 2299 * Get link layers stats for adapter synchronously 2300 */ 2301 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2302 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2303 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2304 resultMsg.recycle(); 2305 return result; 2306 } 2307 2308 /** 2309 * Delete a network 2310 * 2311 * @param networkId id of the network to be removed 2312 */ 2313 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2314 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2315 boolean result = (resultMsg.arg1 != FAILURE); 2316 resultMsg.recycle(); 2317 return result; 2318 } 2319 2320 /** 2321 * Enable a network 2322 * 2323 * @param netId network id of the network 2324 * @param disableOthers true, if all other networks have to be disabled 2325 * @return {@code true} if the operation succeeds, {@code false} otherwise 2326 */ 2327 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2328 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2329 disableOthers ? 1 : 0); 2330 boolean result = (resultMsg.arg1 != FAILURE); 2331 resultMsg.recycle(); 2332 return result; 2333 } 2334 2335 /** 2336 * Disable a network 2337 * 2338 * @param netId network id of the network 2339 * @return {@code true} if the operation succeeds, {@code false} otherwise 2340 */ 2341 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2342 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2343 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2344 resultMsg.recycle(); 2345 return result; 2346 } 2347 2348 /** 2349 * Retrieves a WPS-NFC configuration token for the specified network 2350 * 2351 * @return a hex string representation of the WPS-NFC configuration token 2352 */ 2353 public String syncGetWpsNfcConfigurationToken(int netId) { 2354 return mWifiNative.getNfcWpsConfigurationToken(netId); 2355 } 2356 2357 void enableBackgroundScan(boolean enable) { 2358 if (enable) { 2359 mWifiConfigStore.enableAllNetworks(); 2360 } 2361 boolean ret = mWifiNative.enableBackgroundScan(enable); 2362 if (ret) { 2363 mLegacyPnoEnabled = enable; 2364 } else { 2365 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2366 } 2367 } 2368 2369 /** 2370 * Blacklist a BSSID. This will avoid the AP if there are 2371 * alternate APs to connect 2372 * 2373 * @param bssid BSSID of the network 2374 */ 2375 public void addToBlacklist(String bssid) { 2376 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2377 } 2378 2379 /** 2380 * Clear the blacklist list 2381 */ 2382 public void clearBlacklist() { 2383 sendMessage(CMD_CLEAR_BLACKLIST); 2384 } 2385 2386 public void enableRssiPolling(boolean enabled) { 2387 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2388 } 2389 2390 public void enableAllNetworks() { 2391 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2392 } 2393 2394 /** 2395 * Start filtering Multicast v4 packets 2396 */ 2397 public void startFilteringMulticastV4Packets() { 2398 mFilteringMulticastV4Packets.set(true); 2399 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2400 } 2401 2402 /** 2403 * Stop filtering Multicast v4 packets 2404 */ 2405 public void stopFilteringMulticastV4Packets() { 2406 mFilteringMulticastV4Packets.set(false); 2407 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2408 } 2409 2410 /** 2411 * Start filtering Multicast v4 packets 2412 */ 2413 public void startFilteringMulticastV6Packets() { 2414 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2415 } 2416 2417 /** 2418 * Stop filtering Multicast v4 packets 2419 */ 2420 public void stopFilteringMulticastV6Packets() { 2421 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2422 } 2423 2424 /** 2425 * Set high performance mode of operation. 2426 * Enabling would set active power mode and disable suspend optimizations; 2427 * disabling would set auto power mode and enable suspend optimizations 2428 * 2429 * @param enable true if enable, false otherwise 2430 */ 2431 public void setHighPerfModeEnabled(boolean enable) { 2432 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2433 } 2434 2435 /** 2436 * Set the country code 2437 * 2438 * @param countryCode following ISO 3166 format 2439 * @param persist {@code true} if the setting should be remembered. 2440 */ 2441 public synchronized void setCountryCode(String countryCode, boolean persist) { 2442 // If it's a good country code, apply after the current 2443 // wifi connection is terminated; ignore resetting of code 2444 // for now (it is unclear what the chipset should do when 2445 // country code is reset) 2446 2447 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2448 // else only when the new country code is different from the current one to set 2449 2450 if (TextUtils.isEmpty(countryCode)) { 2451 if (DBG) log("Ignoring resetting of country code"); 2452 } else { 2453 int countryCodeSequence = mCountryCodeSequence.get(); 2454 String currentCountryCode = getCurrentCountryCode(); 2455 if (countryCodeSequence == 0 2456 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2457 2458 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2459 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2460 countryCode); 2461 } 2462 } 2463 } 2464 2465 /** 2466 * reset the country code to default 2467 */ 2468 public synchronized void resetCountryCode() { 2469 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2470 logd("resetting country code to " + mDefaultCountryCode); 2471 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2472 } 2473 } 2474 2475 /** 2476 * Get Network object of current wifi network 2477 * @return Network object of current wifi network 2478 */ 2479 public Network getCurrentNetwork() { 2480 if (mNetworkAgent != null) { 2481 return new Network(mNetworkAgent.netId); 2482 } else { 2483 return null; 2484 } 2485 } 2486 2487 /** 2488 * Get the country code 2489 * 2490 * @return countryCode following ISO 3166 format 2491 */ 2492 public String getCurrentCountryCode() { 2493 return Settings.Global.getString( 2494 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 2495 } 2496 2497 /** 2498 * Set the operational frequency band 2499 * 2500 * @param band 2501 * @param persist {@code true} if the setting should be remembered. 2502 */ 2503 public void setFrequencyBand(int band, boolean persist) { 2504 if (persist) { 2505 Settings.Global.putInt(mContext.getContentResolver(), 2506 Settings.Global.WIFI_FREQUENCY_BAND, 2507 band); 2508 } 2509 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2510 } 2511 2512 /** 2513 * Enable TDLS for a specific MAC address 2514 */ 2515 public void enableTdls(String remoteMacAddress, boolean enable) { 2516 int enabler = enable ? 1 : 0; 2517 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2518 } 2519 2520 /** 2521 * Returns the operational frequency band 2522 */ 2523 public int getFrequencyBand() { 2524 return mFrequencyBand.get(); 2525 } 2526 2527 /** 2528 * Returns the wifi configuration file 2529 */ 2530 public String getConfigFile() { 2531 return mWifiConfigStore.getConfigFile(); 2532 } 2533 2534 /** 2535 * Send a message indicating bluetooth adapter connection state changed 2536 */ 2537 public void sendBluetoothAdapterStateChange(int state) { 2538 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2539 } 2540 2541 /** 2542 * Send a message indicating a package has been uninstalled. 2543 */ 2544 public void removeAppConfigs(String packageName, int uid) { 2545 // Build partial AppInfo manually - package may not exist in database any more 2546 ApplicationInfo ai = new ApplicationInfo(); 2547 ai.packageName = packageName; 2548 ai.uid = uid; 2549 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2550 } 2551 2552 /** 2553 * Send a message indicating a user has been removed. 2554 */ 2555 public void removeUserConfigs(int userId) { 2556 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2557 } 2558 2559 /** 2560 * Save configuration on supplicant 2561 * 2562 * @return {@code true} if the operation succeeds, {@code false} otherwise 2563 * <p/> 2564 * TODO: deprecate this 2565 */ 2566 public boolean syncSaveConfig(AsyncChannel channel) { 2567 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2568 boolean result = (resultMsg.arg1 != FAILURE); 2569 resultMsg.recycle(); 2570 return result; 2571 } 2572 2573 public void updateBatteryWorkSource(WorkSource newSource) { 2574 synchronized (mRunningWifiUids) { 2575 try { 2576 if (newSource != null) { 2577 mRunningWifiUids.set(newSource); 2578 } 2579 if (mIsRunning) { 2580 if (mReportedRunning) { 2581 // If the work source has changed since last time, need 2582 // to remove old work from battery stats. 2583 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2584 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2585 mRunningWifiUids); 2586 mLastRunningWifiUids.set(mRunningWifiUids); 2587 } 2588 } else { 2589 // Now being started, report it. 2590 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2591 mLastRunningWifiUids.set(mRunningWifiUids); 2592 mReportedRunning = true; 2593 } 2594 } else { 2595 if (mReportedRunning) { 2596 // Last reported we were running, time to stop. 2597 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2598 mLastRunningWifiUids.clear(); 2599 mReportedRunning = false; 2600 } 2601 } 2602 mWakeLock.setWorkSource(newSource); 2603 } catch (RemoteException ignore) { 2604 } 2605 } 2606 } 2607 2608 @Override 2609 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2610 super.dump(fd, pw, args); 2611 mSupplicantStateTracker.dump(fd, pw, args); 2612 pw.println("mLinkProperties " + mLinkProperties); 2613 pw.println("mWifiInfo " + mWifiInfo); 2614 pw.println("mDhcpResults " + mDhcpResults); 2615 pw.println("mNetworkInfo " + mNetworkInfo); 2616 pw.println("mLastSignalLevel " + mLastSignalLevel); 2617 pw.println("mLastBssid " + mLastBssid); 2618 pw.println("mLastNetworkId " + mLastNetworkId); 2619 pw.println("mOperationalMode " + mOperationalMode); 2620 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2621 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2622 pw.println("Supplicant status " + mWifiNative.status(true)); 2623 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2624 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2625 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2626 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2627 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2628 pw.println("SSID whitelist :" ); 2629 for (int i=0; i < mWhiteListedSsids.length; i++) { 2630 pw.println(" " + mWhiteListedSsids[i]); 2631 } 2632 } 2633 mNetworkFactory.dump(fd, pw, args); 2634 mUntrustedNetworkFactory.dump(fd, pw, args); 2635 pw.println(); 2636 mWifiConfigStore.dump(fd, pw, args); 2637 pw.println(); 2638 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2639 mWifiLogger.dump(fd, pw, args); 2640 } 2641 2642 /** 2643 * ****************************************************** 2644 * Internal private functions 2645 * ****************************************************** 2646 */ 2647 2648 private void logStateAndMessage(Message message, String state) { 2649 messageHandlingStatus = 0; 2650 if (mLogMessages) { 2651 //long now = SystemClock.elapsedRealtimeNanos(); 2652 //String ts = String.format("[%,d us]", now/1000); 2653 2654 logd(" " + state + " " + getLogRecString(message)); 2655 } 2656 } 2657 2658 /** 2659 * helper, prints the milli time since boot wi and w/o suspended time 2660 */ 2661 String printTime() { 2662 StringBuilder sb = new StringBuilder(); 2663 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2664 sb.append("/").append(SystemClock.elapsedRealtime()); 2665 return sb.toString(); 2666 } 2667 2668 /** 2669 * Return the additional string to be logged by LogRec, default 2670 * 2671 * @param msg that was processed 2672 * @return information to be logged as a String 2673 */ 2674 protected String getLogRecString(Message msg) { 2675 WifiConfiguration config; 2676 Long now; 2677 String report; 2678 String key; 2679 StringBuilder sb = new StringBuilder(); 2680 if (mScreenOn) { 2681 sb.append("!"); 2682 } 2683 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2684 sb.append("(").append(messageHandlingStatus).append(")"); 2685 } 2686 sb.append(smToString(msg)); 2687 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2688 sb.append(" uid=" + msg.sendingUid); 2689 } 2690 sb.append(" ").append(printTime()); 2691 switch (msg.what) { 2692 case CMD_STARTED_GSCAN_DBG: 2693 case CMD_STARTED_PNO_DBG: 2694 sb.append(" "); 2695 sb.append(Integer.toString(msg.arg1)); 2696 sb.append(" "); 2697 sb.append(Integer.toString(msg.arg2)); 2698 if (msg.obj != null) { 2699 sb.append(" " + (String)msg.obj); 2700 } 2701 break; 2702 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2703 sb.append(" "); 2704 sb.append(Integer.toString(msg.arg1)); 2705 sb.append(" "); 2706 sb.append(Integer.toString(msg.arg2)); 2707 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2708 if (msg.obj != null) { 2709 sb.append(" " + (String)msg.obj); 2710 } 2711 break; 2712 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2713 sb.append(" "); 2714 sb.append(Integer.toString(msg.arg1)); 2715 sb.append(" "); 2716 sb.append(Integer.toString(msg.arg2)); 2717 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2718 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2719 sb.append(" autojoinAllowed="); 2720 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2721 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2722 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2723 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2724 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2725 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2726 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2727 break; 2728 case CMD_PNO_NETWORK_FOUND: 2729 sb.append(" "); 2730 sb.append(Integer.toString(msg.arg1)); 2731 sb.append(" "); 2732 sb.append(Integer.toString(msg.arg2)); 2733 if (msg.obj != null) { 2734 ScanResult[] results = (ScanResult[])msg.obj; 2735 for (int i = 0; i < results.length; i++) { 2736 sb.append(" ").append(results[i].SSID).append(" "); 2737 sb.append(results[i].frequency); 2738 sb.append(" ").append(results[i].level); 2739 } 2740 } 2741 break; 2742 case CMD_START_SCAN: 2743 now = System.currentTimeMillis(); 2744 sb.append(" "); 2745 sb.append(Integer.toString(msg.arg1)); 2746 sb.append(" "); 2747 sb.append(Integer.toString(msg.arg2)); 2748 sb.append(" ic="); 2749 sb.append(Integer.toString(sScanAlarmIntentCount)); 2750 if (msg.obj != null) { 2751 Bundle bundle = (Bundle) msg.obj; 2752 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2753 if (request != 0) { 2754 sb.append(" proc(ms):").append(now - request); 2755 } 2756 } 2757 if (mIsScanOngoing) sb.append(" onGoing"); 2758 if (mIsFullScanOngoing) sb.append(" full"); 2759 if (lastStartScanTimeStamp != 0) { 2760 sb.append(" started:").append(lastStartScanTimeStamp); 2761 sb.append(",").append(now - lastStartScanTimeStamp); 2762 } 2763 if (lastScanDuration != 0) { 2764 sb.append(" dur:").append(lastScanDuration); 2765 } 2766 sb.append(" cnt=").append(mDelayedScanCounter); 2767 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2768 sb.append(" f=").append(mWifiInfo.getFrequency()); 2769 sb.append(" sc=").append(mWifiInfo.score); 2770 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2771 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2772 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2773 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2774 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2775 if (lastScanFreqs != null) { 2776 sb.append(" list=").append(lastScanFreqs); 2777 } else { 2778 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2779 } 2780 report = reportOnTime(); 2781 if (report != null) { 2782 sb.append(" ").append(report); 2783 } 2784 break; 2785 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2786 sb.append(" "); 2787 sb.append(Integer.toString(msg.arg1)); 2788 sb.append(" "); 2789 sb.append(Integer.toString(msg.arg2)); 2790 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2791 if (stateChangeResult != null) { 2792 sb.append(stateChangeResult.toString()); 2793 } 2794 break; 2795 case WifiManager.SAVE_NETWORK: 2796 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2797 sb.append(" "); 2798 sb.append(Integer.toString(msg.arg1)); 2799 sb.append(" "); 2800 sb.append(Integer.toString(msg.arg2)); 2801 if (lastSavedConfigurationAttempt != null) { 2802 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2803 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2804 if (lastSavedConfigurationAttempt.hiddenSSID) { 2805 sb.append(" hidden"); 2806 } 2807 if (lastSavedConfigurationAttempt.preSharedKey != null 2808 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2809 sb.append(" hasPSK"); 2810 } 2811 if (lastSavedConfigurationAttempt.ephemeral) { 2812 sb.append(" ephemeral"); 2813 } 2814 if (lastSavedConfigurationAttempt.selfAdded) { 2815 sb.append(" selfAdded"); 2816 } 2817 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2818 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2819 } 2820 break; 2821 case WifiManager.FORGET_NETWORK: 2822 sb.append(" "); 2823 sb.append(Integer.toString(msg.arg1)); 2824 sb.append(" "); 2825 sb.append(Integer.toString(msg.arg2)); 2826 if (lastForgetConfigurationAttempt != null) { 2827 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2828 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2829 if (lastForgetConfigurationAttempt.hiddenSSID) { 2830 sb.append(" hidden"); 2831 } 2832 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2833 sb.append(" hasPSK"); 2834 } 2835 if (lastForgetConfigurationAttempt.ephemeral) { 2836 sb.append(" ephemeral"); 2837 } 2838 if (lastForgetConfigurationAttempt.selfAdded) { 2839 sb.append(" selfAdded"); 2840 } 2841 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2842 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2843 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2844 } 2845 break; 2846 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2847 sb.append(" "); 2848 sb.append(Integer.toString(msg.arg1)); 2849 sb.append(" "); 2850 sb.append(Integer.toString(msg.arg2)); 2851 String bssid = (String) msg.obj; 2852 if (bssid != null && bssid.length() > 0) { 2853 sb.append(" "); 2854 sb.append(bssid); 2855 } 2856 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2857 break; 2858 case WifiMonitor.SCAN_RESULTS_EVENT: 2859 sb.append(" "); 2860 sb.append(Integer.toString(msg.arg1)); 2861 sb.append(" "); 2862 sb.append(Integer.toString(msg.arg2)); 2863 if (mScanResults != null) { 2864 sb.append(" found="); 2865 sb.append(mScanResults.size()); 2866 } 2867 sb.append(" known=").append(mNumScanResultsKnown); 2868 sb.append(" got=").append(mNumScanResultsReturned); 2869 if (lastScanDuration != 0) { 2870 sb.append(" dur:").append(lastScanDuration); 2871 } 2872 if (mOnTime != 0) { 2873 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2874 sb.append(",").append(mOnTime); 2875 } 2876 if (mTxTime != 0) { 2877 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2878 sb.append(",").append(mTxTime); 2879 } 2880 if (mRxTime != 0) { 2881 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2882 sb.append(",").append(mRxTime); 2883 } 2884 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2885 sb.append(String.format(" con=%d", mConnectionRequests)); 2886 key = mWifiConfigStore.getLastSelectedConfiguration(); 2887 if (key != null) { 2888 sb.append(" last=").append(key); 2889 } 2890 break; 2891 case WifiMonitor.SCAN_FAILED_EVENT: 2892 break; 2893 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2894 sb.append(" "); 2895 sb.append(Integer.toString(msg.arg1)); 2896 sb.append(" "); 2897 sb.append(Integer.toString(msg.arg2)); 2898 sb.append(" ").append(mLastBssid); 2899 sb.append(" nid=").append(mLastNetworkId); 2900 config = getCurrentWifiConfiguration(); 2901 if (config != null) { 2902 sb.append(" ").append(config.configKey()); 2903 } 2904 key = mWifiConfigStore.getLastSelectedConfiguration(); 2905 if (key != null) { 2906 sb.append(" last=").append(key); 2907 } 2908 break; 2909 case CMD_TARGET_BSSID: 2910 case CMD_ASSOCIATED_BSSID: 2911 sb.append(" "); 2912 sb.append(Integer.toString(msg.arg1)); 2913 sb.append(" "); 2914 sb.append(Integer.toString(msg.arg2)); 2915 if (msg.obj != null) { 2916 sb.append(" BSSID=").append((String) msg.obj); 2917 } 2918 if (mTargetRoamBSSID != null) { 2919 sb.append(" Target=").append(mTargetRoamBSSID); 2920 } 2921 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2922 break; 2923 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2924 if (msg.obj != null) { 2925 sb.append(" ").append((String) msg.obj); 2926 } 2927 sb.append(" nid=").append(msg.arg1); 2928 sb.append(" reason=").append(msg.arg2); 2929 if (mLastBssid != null) { 2930 sb.append(" lastbssid=").append(mLastBssid); 2931 } 2932 if (mWifiInfo.getFrequency() != -1) { 2933 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2934 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2935 } 2936 if (linkDebouncing) { 2937 sb.append(" debounce"); 2938 } 2939 break; 2940 case WifiMonitor.SSID_TEMP_DISABLED: 2941 case WifiMonitor.SSID_REENABLED: 2942 sb.append(" nid=").append(msg.arg1); 2943 if (msg.obj != null) { 2944 sb.append(" ").append((String) msg.obj); 2945 } 2946 config = getCurrentWifiConfiguration(); 2947 if (config != null) { 2948 sb.append(" cur=").append(config.configKey()); 2949 sb.append(" ajst=").append(config.autoJoinStatus); 2950 if (config.selfAdded) { 2951 sb.append(" selfAdded"); 2952 } 2953 if (config.status != 0) { 2954 sb.append(" st=").append(config.status); 2955 sb.append(" rs=").append(config.disableReason); 2956 } 2957 if (config.lastConnected != 0) { 2958 now = System.currentTimeMillis(); 2959 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2960 } 2961 if (mLastBssid != null) { 2962 sb.append(" lastbssid=").append(mLastBssid); 2963 } 2964 if (mWifiInfo.getFrequency() != -1) { 2965 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2966 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2967 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2968 } 2969 } 2970 break; 2971 case CMD_RSSI_POLL: 2972 case CMD_UNWANTED_NETWORK: 2973 case WifiManager.RSSI_PKTCNT_FETCH: 2974 sb.append(" "); 2975 sb.append(Integer.toString(msg.arg1)); 2976 sb.append(" "); 2977 sb.append(Integer.toString(msg.arg2)); 2978 if (mWifiInfo.getSSID() != null) 2979 if (mWifiInfo.getSSID() != null) 2980 sb.append(" ").append(mWifiInfo.getSSID()); 2981 if (mWifiInfo.getBSSID() != null) 2982 sb.append(" ").append(mWifiInfo.getBSSID()); 2983 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2984 sb.append(" f=").append(mWifiInfo.getFrequency()); 2985 sb.append(" sc=").append(mWifiInfo.score); 2986 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2987 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2988 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2989 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2990 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2991 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2992 report = reportOnTime(); 2993 if (report != null) { 2994 sb.append(" ").append(report); 2995 } 2996 if (wifiScoringReport != null) { 2997 sb.append(wifiScoringReport); 2998 } 2999 if (mConnectedModeGScanOffloadStarted) { 3000 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3001 } else { 3002 sb.append(" offload-stopped"); 3003 } 3004 break; 3005 case CMD_AUTO_CONNECT: 3006 case WifiManager.CONNECT_NETWORK: 3007 sb.append(" "); 3008 sb.append(Integer.toString(msg.arg1)); 3009 sb.append(" "); 3010 sb.append(Integer.toString(msg.arg2)); 3011 config = (WifiConfiguration) msg.obj; 3012 if (config != null) { 3013 sb.append(" ").append(config.configKey()); 3014 if (config.visibility != null) { 3015 sb.append(" ").append(config.visibility.toString()); 3016 } 3017 } 3018 if (mTargetRoamBSSID != null) { 3019 sb.append(" ").append(mTargetRoamBSSID); 3020 } 3021 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3022 config = getCurrentWifiConfiguration(); 3023 if (config != null) { 3024 sb.append(config.configKey()); 3025 if (config.visibility != null) { 3026 sb.append(" ").append(config.visibility.toString()); 3027 } 3028 } 3029 break; 3030 case CMD_AUTO_ROAM: 3031 sb.append(" "); 3032 sb.append(Integer.toString(msg.arg1)); 3033 sb.append(" "); 3034 sb.append(Integer.toString(msg.arg2)); 3035 ScanResult result = (ScanResult) msg.obj; 3036 if (result != null) { 3037 now = System.currentTimeMillis(); 3038 sb.append(" bssid=").append(result.BSSID); 3039 sb.append(" rssi=").append(result.level); 3040 sb.append(" freq=").append(result.frequency); 3041 if (result.seen > 0 && result.seen < now) { 3042 sb.append(" seen=").append(now - result.seen); 3043 } else { 3044 // Somehow the timestamp for this scan result is inconsistent 3045 sb.append(" !seen=").append(result.seen); 3046 } 3047 } 3048 if (mTargetRoamBSSID != null) { 3049 sb.append(" ").append(mTargetRoamBSSID); 3050 } 3051 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3052 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3053 break; 3054 case CMD_ADD_OR_UPDATE_NETWORK: 3055 sb.append(" "); 3056 sb.append(Integer.toString(msg.arg1)); 3057 sb.append(" "); 3058 sb.append(Integer.toString(msg.arg2)); 3059 if (msg.obj != null) { 3060 config = (WifiConfiguration) msg.obj; 3061 sb.append(" ").append(config.configKey()); 3062 sb.append(" prio=").append(config.priority); 3063 sb.append(" status=").append(config.status); 3064 if (config.BSSID != null) { 3065 sb.append(" ").append(config.BSSID); 3066 } 3067 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3068 if (curConfig != null) { 3069 if (curConfig.configKey().equals(config.configKey())) { 3070 sb.append(" is current"); 3071 } else { 3072 sb.append(" current=").append(curConfig.configKey()); 3073 sb.append(" prio=").append(curConfig.priority); 3074 sb.append(" status=").append(curConfig.status); 3075 } 3076 } 3077 } 3078 break; 3079 case WifiManager.DISABLE_NETWORK: 3080 case CMD_ENABLE_NETWORK: 3081 sb.append(" "); 3082 sb.append(Integer.toString(msg.arg1)); 3083 sb.append(" "); 3084 sb.append(Integer.toString(msg.arg2)); 3085 key = mWifiConfigStore.getLastSelectedConfiguration(); 3086 if (key != null) { 3087 sb.append(" last=").append(key); 3088 } 3089 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3090 if (config != null && (key == null || !config.configKey().equals(key))) { 3091 sb.append(" target=").append(key); 3092 } 3093 break; 3094 case CMD_GET_CONFIGURED_NETWORKS: 3095 sb.append(" "); 3096 sb.append(Integer.toString(msg.arg1)); 3097 sb.append(" "); 3098 sb.append(Integer.toString(msg.arg2)); 3099 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3100 break; 3101 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3102 sb.append(" "); 3103 sb.append(Integer.toString(msg.arg1)); 3104 sb.append(" "); 3105 sb.append(Integer.toString(msg.arg2)); 3106 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3107 sb.append(",").append(mWifiInfo.txBad); 3108 sb.append(",").append(mWifiInfo.txRetries); 3109 break; 3110 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3111 sb.append(" "); 3112 sb.append(Integer.toString(msg.arg1)); 3113 sb.append(" "); 3114 sb.append(Integer.toString(msg.arg2)); 3115 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3116 sb.append(" OK "); 3117 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3118 sb.append(" FAIL "); 3119 } 3120 if (mLinkProperties != null) { 3121 if (mLinkProperties.hasIPv4Address()) { 3122 sb.append(" v4"); 3123 } 3124 if (mLinkProperties.hasGlobalIPv6Address()) { 3125 sb.append(" v6"); 3126 } 3127 if (mLinkProperties.hasIPv4DefaultRoute()) { 3128 sb.append(" v4r"); 3129 } 3130 if (mLinkProperties.hasIPv6DefaultRoute()) { 3131 sb.append(" v6r"); 3132 } 3133 if (mLinkProperties.hasIPv4DnsServer()) { 3134 sb.append(" v4dns"); 3135 } 3136 if (mLinkProperties.hasIPv6DnsServer()) { 3137 sb.append(" v6dns"); 3138 } 3139 } 3140 break; 3141 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3142 sb.append(" "); 3143 sb.append(Integer.toString(msg.arg1)); 3144 sb.append(" "); 3145 sb.append(Integer.toString(msg.arg2)); 3146 if (msg.obj != null) { 3147 NetworkInfo info = (NetworkInfo) msg.obj; 3148 NetworkInfo.State state = info.getState(); 3149 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3150 if (state != null) { 3151 sb.append(" st=").append(state); 3152 } 3153 if (detailedState != null) { 3154 sb.append("/").append(detailedState); 3155 } 3156 } 3157 break; 3158 case CMD_IP_CONFIGURATION_LOST: 3159 int count = -1; 3160 WifiConfiguration c = getCurrentWifiConfiguration(); 3161 if (c != null) count = c.numIpConfigFailures; 3162 sb.append(" "); 3163 sb.append(Integer.toString(msg.arg1)); 3164 sb.append(" "); 3165 sb.append(Integer.toString(msg.arg2)); 3166 sb.append(" failures: "); 3167 sb.append(Integer.toString(count)); 3168 sb.append("/"); 3169 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3170 if (mWifiInfo.getBSSID() != null) { 3171 sb.append(" ").append(mWifiInfo.getBSSID()); 3172 } 3173 if (c != null) { 3174 ScanDetailCache scanDetailCache = 3175 mWifiConfigStore.getScanDetailCache(c); 3176 if (scanDetailCache != null) { 3177 for (ScanDetail sd : scanDetailCache.values()) { 3178 ScanResult r = sd.getScanResult(); 3179 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3180 sb.append(" ipfail=").append(r.numIpConfigFailures); 3181 sb.append(",st=").append(r.autoJoinStatus); 3182 } 3183 } 3184 } 3185 sb.append(" -> ajst=").append(c.autoJoinStatus); 3186 sb.append(" ").append(c.disableReason); 3187 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3188 sb.append(",").append(mWifiInfo.txBad); 3189 sb.append(",").append(mWifiInfo.txRetries); 3190 } 3191 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3192 break; 3193 case CMD_UPDATE_LINKPROPERTIES: 3194 sb.append(" "); 3195 sb.append(Integer.toString(msg.arg1)); 3196 sb.append(" "); 3197 sb.append(Integer.toString(msg.arg2)); 3198 if (mLinkProperties != null) { 3199 if (mLinkProperties.hasIPv4Address()) { 3200 sb.append(" v4"); 3201 } 3202 if (mLinkProperties.hasGlobalIPv6Address()) { 3203 sb.append(" v6"); 3204 } 3205 if (mLinkProperties.hasIPv4DefaultRoute()) { 3206 sb.append(" v4r"); 3207 } 3208 if (mLinkProperties.hasIPv6DefaultRoute()) { 3209 sb.append(" v6r"); 3210 } 3211 if (mLinkProperties.hasIPv4DnsServer()) { 3212 sb.append(" v4dns"); 3213 } 3214 if (mLinkProperties.hasIPv6DnsServer()) { 3215 sb.append(" v6dns"); 3216 } 3217 } 3218 break; 3219 case CMD_IP_REACHABILITY_LOST: 3220 if (msg.obj != null) { 3221 sb.append(" ").append((String) msg.obj); 3222 } 3223 break; 3224 case CMD_SET_COUNTRY_CODE: 3225 sb.append(" "); 3226 sb.append(Integer.toString(msg.arg1)); 3227 sb.append(" "); 3228 sb.append(Integer.toString(msg.arg2)); 3229 if (msg.obj != null) { 3230 sb.append(" ").append((String) msg.obj); 3231 } 3232 break; 3233 case CMD_ROAM_WATCHDOG_TIMER: 3234 sb.append(" "); 3235 sb.append(Integer.toString(msg.arg1)); 3236 sb.append(" "); 3237 sb.append(Integer.toString(msg.arg2)); 3238 sb.append(" cur=").append(roamWatchdogCount); 3239 break; 3240 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3241 sb.append(" "); 3242 sb.append(Integer.toString(msg.arg1)); 3243 sb.append(" "); 3244 sb.append(Integer.toString(msg.arg2)); 3245 sb.append(" cur=").append(disconnectingWatchdogCount); 3246 break; 3247 case CMD_START_RSSI_MONITORING_OFFLOAD: 3248 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3249 case CMD_RSSI_THRESHOLD_BREACH: 3250 sb.append(" rssi="); 3251 sb.append(Integer.toString(msg.arg1)); 3252 sb.append(" thresholds="); 3253 sb.append(Arrays.toString(mRssiRanges)); 3254 break; 3255 default: 3256 sb.append(" "); 3257 sb.append(Integer.toString(msg.arg1)); 3258 sb.append(" "); 3259 sb.append(Integer.toString(msg.arg2)); 3260 break; 3261 } 3262 3263 return sb.toString(); 3264 } 3265 3266 private void stopPnoOffload() { 3267 3268 // clear the PNO list 3269 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3270 Log.e(TAG, "Failed to stop pno"); 3271 } 3272 3273 } 3274 3275 3276 private boolean configureSsidWhiteList() { 3277 3278 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3279 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3280 return true; 3281 } 3282 3283 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3284 loge("configureSsidWhiteList couldnt program SSID list, size " 3285 + mWhiteListedSsids.length); 3286 return false; 3287 } 3288 3289 logd("configureSsidWhiteList success"); 3290 return true; 3291 } 3292 3293 // In associated more, lazy roam will be looking for 5GHz roam candidate 3294 private boolean configureLazyRoam() { 3295 boolean status; 3296 if (!useHalBasedAutoJoinOffload()) return false; 3297 3298 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3299 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3300 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3301 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3302 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3303 params.A_band_max_boost = 65; 3304 params.lazy_roam_hysteresis = 25; 3305 params.alert_roam_rssi_trigger = -75; 3306 3307 if (DBG) { 3308 Log.e(TAG, "configureLazyRoam " + params.toString()); 3309 } 3310 3311 if (!WifiNative.setLazyRoam(true, params)) { 3312 3313 Log.e(TAG, "configureLazyRoam couldnt program params"); 3314 3315 return false; 3316 } 3317 if (DBG) { 3318 Log.e(TAG, "configureLazyRoam success"); 3319 } 3320 return true; 3321 } 3322 3323 // In associated more, lazy roam will be looking for 5GHz roam candidate 3324 private boolean stopLazyRoam() { 3325 boolean status; 3326 if (!useHalBasedAutoJoinOffload()) return false; 3327 if (DBG) { 3328 Log.e(TAG, "stopLazyRoam"); 3329 } 3330 return WifiNative.setLazyRoam(false, null); 3331 } 3332 3333 private boolean startGScanConnectedModeOffload(String reason) { 3334 if (DBG) { 3335 if (reason == null) { 3336 reason = ""; 3337 } 3338 logd("startGScanConnectedModeOffload " + reason); 3339 } 3340 stopGScan("startGScanConnectedModeOffload " + reason); 3341 if (!mScreenOn) return false; 3342 3343 if (USE_PAUSE_SCANS) { 3344 mWifiNative.pauseScan(); 3345 } 3346 mPnoEnabled = configurePno(); 3347 if (mPnoEnabled == false) { 3348 if (USE_PAUSE_SCANS) { 3349 mWifiNative.restartScan(); 3350 } 3351 return false; 3352 } 3353 mLazyRoamEnabled = configureLazyRoam(); 3354 if (mLazyRoamEnabled == false) { 3355 if (USE_PAUSE_SCANS) { 3356 mWifiNative.restartScan(); 3357 } 3358 return false; 3359 } 3360 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3361 configureSsidWhiteList(); 3362 } 3363 if (!startConnectedGScan(reason)) { 3364 if (USE_PAUSE_SCANS) { 3365 mWifiNative.restartScan(); 3366 } 3367 return false; 3368 } 3369 if (USE_PAUSE_SCANS) { 3370 mWifiNative.restartScan(); 3371 } 3372 mConnectedModeGScanOffloadStarted = true; 3373 if (DBG) { 3374 logd("startGScanConnectedModeOffload success"); 3375 } 3376 return true; 3377 } 3378 3379 private boolean startGScanDisconnectedModeOffload(String reason) { 3380 if (DBG) { 3381 logd("startGScanDisconnectedModeOffload " + reason); 3382 } 3383 stopGScan("startGScanDisconnectedModeOffload " + reason); 3384 if (USE_PAUSE_SCANS) { 3385 mWifiNative.pauseScan(); 3386 } 3387 mPnoEnabled = configurePno(); 3388 if (mPnoEnabled == false) { 3389 if (USE_PAUSE_SCANS) { 3390 mWifiNative.restartScan(); 3391 } 3392 return false; 3393 } 3394 if (!startDisconnectedGScan(reason)) { 3395 if (USE_PAUSE_SCANS) { 3396 mWifiNative.restartScan(); 3397 } 3398 return false; 3399 } 3400 if (USE_PAUSE_SCANS) { 3401 mWifiNative.restartScan(); 3402 } 3403 return true; 3404 } 3405 3406 private boolean configurePno() { 3407 if (!useHalBasedAutoJoinOffload()) return false; 3408 3409 if (mWifiScanner == null) { 3410 log("configurePno: mWifiScanner is null "); 3411 return true; 3412 } 3413 3414 List<WifiNative.WifiPnoNetwork> llist 3415 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3416 if (llist == null || llist.size() == 0) { 3417 stopPnoOffload(); 3418 log("configurePno: empty PNO list "); 3419 return true; 3420 } 3421 if (DBG) { 3422 log("configurePno: got llist size " + llist.size()); 3423 } 3424 3425 // first program the network we want to look for thru the pno API 3426 WifiNative.WifiPnoNetwork list[] 3427 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3428 3429 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3430 Log.e(TAG, "Failed to set pno, length = " + list.length); 3431 return false; 3432 } 3433 3434 if (true) { 3435 StringBuilder sb = new StringBuilder(); 3436 for (WifiNative.WifiPnoNetwork network : list) { 3437 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3438 sb.append(" flags="); 3439 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3440 sb.append("] "); 3441 3442 } 3443 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3444 } 3445 return true; 3446 } 3447 3448 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3449 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3450 3451 private boolean startConnectedGScan(String reason) { 3452 // send a scan background request so as to kick firmware 3453 // 5GHz roaming and autojoin 3454 // We do this only if screen is on 3455 WifiScanner.ScanSettings settings; 3456 3457 if (mPnoEnabled || mLazyRoamEnabled) { 3458 settings = new WifiScanner.ScanSettings(); 3459 settings.band = WifiScanner.WIFI_BAND_BOTH; 3460 long now = System.currentTimeMillis(); 3461 3462 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3463 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3464 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3465 } else { 3466 mGScanStartTimeMilli = now; 3467 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3468 // if we start offload with short interval, then reconfigure it after a given 3469 // duration of time so as to reduce the scan frequency 3470 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3471 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3472 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3473 (long)delay); 3474 mRestartAutoJoinOffloadCounter++; 3475 } 3476 mGScanPeriodMilli = settings.periodInMs; 3477 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3478 if (DBG) { 3479 log("startConnectedScan: settings band="+ settings.band 3480 + " period=" + settings.periodInMs); 3481 } 3482 3483 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3484 if (true) { 3485 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3486 } 3487 } 3488 return true; 3489 } 3490 3491 private boolean startDisconnectedGScan(String reason) { 3492 // send a scan background request so as to kick firmware 3493 // PNO 3494 // This is done in both screen On and screen Off modes 3495 WifiScanner.ScanSettings settings; 3496 3497 if (mWifiScanner == null) { 3498 log("startDisconnectedGScan: no wifi scanner"); 3499 return false; 3500 } 3501 3502 if (mPnoEnabled || mLazyRoamEnabled) { 3503 settings = new WifiScanner.ScanSettings(); 3504 settings.band = WifiScanner.WIFI_BAND_BOTH; 3505 long now = System.currentTimeMillis(); 3506 3507 3508 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3509 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3510 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3511 } else { 3512 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3513 mGScanStartTimeMilli = now; 3514 // if we start offload with short interval, then reconfigure it after a given 3515 // duration of time so as to reduce the scan frequency 3516 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3517 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3518 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3519 (long)delay); 3520 mRestartAutoJoinOffloadCounter++; 3521 } 3522 mGScanPeriodMilli = settings.periodInMs; 3523 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3524 if (DBG) { 3525 log("startDisconnectedScan: settings band="+ settings.band 3526 + " period=" + settings.periodInMs); 3527 } 3528 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3529 if (true) { 3530 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3531 } 3532 } 3533 return true; 3534 } 3535 3536 private boolean stopGScan(String reason) { 3537 mGScanStartTimeMilli = 0; 3538 mGScanPeriodMilli = 0; 3539 if (mWifiScanner != null) { 3540 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3541 } 3542 mConnectedModeGScanOffloadStarted = false; 3543 if (true) { 3544 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3545 } 3546 return true; 3547 } 3548 3549 private void handleScreenStateChanged(boolean screenOn) { 3550 mScreenOn = screenOn; 3551 if (PDBG) { 3552 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3553 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3554 + " state " + getCurrentState().getName() 3555 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3556 } 3557 enableRssiPolling(screenOn); 3558 if (mUserWantsSuspendOpt.get()) { 3559 if (screenOn) { 3560 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3561 } else { 3562 // Allow 2s for suspend optimizations to be set 3563 mSuspendWakeLock.acquire(2000); 3564 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3565 } 3566 } 3567 mScreenBroadcastReceived.set(true); 3568 3569 getWifiLinkLayerStats(false); 3570 mOnTimeScreenStateChange = mOnTime; 3571 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3572 3573 cancelDelayedScan(); 3574 3575 if (screenOn) { 3576 enableBackgroundScan(false); 3577 setScanAlarm(false); 3578 clearBlacklist(); 3579 3580 fullBandConnectedTimeIntervalMilli 3581 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3582 // In either Disconnectedstate or ConnectedState, 3583 // start the scan alarm so as to enable autojoin 3584 if (getCurrentState() == mConnectedState 3585 && allowFullBandScanAndAssociated()) { 3586 if (useHalBasedAutoJoinOffload()) { 3587 startGScanConnectedModeOffload("screenOnConnected"); 3588 } else { 3589 // Scan after 500ms 3590 startDelayedScan(500, null, null); 3591 } 3592 } else if (getCurrentState() == mDisconnectedState) { 3593 if (useHalBasedAutoJoinOffload()) { 3594 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3595 } else { 3596 // Scan after 500ms 3597 startDelayedScan(500, null, null); 3598 } 3599 } 3600 } else { 3601 if (getCurrentState() == mDisconnectedState) { 3602 // Screen Off and Disconnected and chipset doesn't support scan offload 3603 // => start scan alarm 3604 // Screen Off and Disconnected and chipset does support scan offload 3605 // => will use scan offload (i.e. background scan) 3606 if (useHalBasedAutoJoinOffload()) { 3607 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3608 } else { 3609 if (!mBackgroundScanSupported) { 3610 setScanAlarm(true); 3611 } else { 3612 if (!mIsScanOngoing) { 3613 enableBackgroundScan(true); 3614 } 3615 } 3616 } 3617 } else { 3618 enableBackgroundScan(false); 3619 if (useHalBasedAutoJoinOffload()) { 3620 // don't try stop Gscan if it is not enabled 3621 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3622 } 3623 } 3624 } 3625 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3626 3627 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3628 } 3629 3630 private void checkAndSetConnectivityInstance() { 3631 if (mCm == null) { 3632 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3633 } 3634 } 3635 3636 private boolean startTethering(ArrayList<String> available) { 3637 3638 boolean wifiAvailable = false; 3639 3640 checkAndSetConnectivityInstance(); 3641 3642 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3643 3644 for (String intf : available) { 3645 for (String regex : wifiRegexs) { 3646 if (intf.matches(regex)) { 3647 3648 InterfaceConfiguration ifcg = null; 3649 try { 3650 ifcg = mNwService.getInterfaceConfig(intf); 3651 if (ifcg != null) { 3652 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3653 ifcg.setLinkAddress(new LinkAddress( 3654 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3655 ifcg.setInterfaceUp(); 3656 3657 mNwService.setInterfaceConfig(intf, ifcg); 3658 } 3659 } catch (Exception e) { 3660 loge("Error configuring interface " + intf + ", :" + e); 3661 return false; 3662 } 3663 3664 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3665 loge("Error tethering on " + intf); 3666 return false; 3667 } 3668 mTetherInterfaceName = intf; 3669 return true; 3670 } 3671 } 3672 } 3673 // We found no interfaces to tether 3674 return false; 3675 } 3676 3677 private void stopTethering() { 3678 3679 checkAndSetConnectivityInstance(); 3680 3681 /* Clear the interface config to allow dhcp correctly configure new 3682 ip settings */ 3683 InterfaceConfiguration ifcg = null; 3684 try { 3685 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3686 if (ifcg != null) { 3687 ifcg.setLinkAddress( 3688 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3689 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3690 } 3691 } catch (Exception e) { 3692 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3693 } 3694 3695 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3696 loge("Untether initiate failed!"); 3697 } 3698 } 3699 3700 private boolean isWifiTethered(ArrayList<String> active) { 3701 3702 checkAndSetConnectivityInstance(); 3703 3704 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3705 for (String intf : active) { 3706 for (String regex : wifiRegexs) { 3707 if (intf.matches(regex)) { 3708 return true; 3709 } 3710 } 3711 } 3712 // We found no interfaces that are tethered 3713 return false; 3714 } 3715 3716 /** 3717 * Set the country code from the system setting value, if any. 3718 */ 3719 private void initializeCountryCode() { 3720 String countryCode = getCurrentCountryCode(); 3721 if (countryCode != null && !countryCode.isEmpty()) { 3722 setCountryCode(countryCode, false); 3723 } else { 3724 //use driver default 3725 } 3726 } 3727 3728 /** 3729 * Set the frequency band from the system setting value, if any. 3730 */ 3731 private void setFrequencyBand() { 3732 int band = Settings.Global.getInt(mContext.getContentResolver(), 3733 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3734 3735 if (mWifiNative.setBand(band)) { 3736 mFrequencyBand.set(band); 3737 if (PDBG) { 3738 logd("done set frequency band " + band); 3739 } 3740 } else { 3741 loge("Failed to set frequency band " + band); 3742 } 3743 } 3744 3745 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3746 if (DBG) { 3747 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3748 + " -want " + mUserWantsSuspendOpt.get() 3749 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3750 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3751 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3752 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3753 } 3754 //mWifiNative.setSuspendOptimizations(enabled); 3755 3756 if (enabled) { 3757 mSuspendOptNeedsDisabled &= ~reason; 3758 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3759 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3760 if (DBG) { 3761 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3762 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3763 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3764 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3765 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3766 } 3767 mWifiNative.setSuspendOptimizations(true); 3768 } 3769 } else { 3770 mSuspendOptNeedsDisabled |= reason; 3771 mWifiNative.setSuspendOptimizations(false); 3772 } 3773 } 3774 3775 private void setSuspendOptimizations(int reason, boolean enabled) { 3776 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3777 if (enabled) { 3778 mSuspendOptNeedsDisabled &= ~reason; 3779 } else { 3780 mSuspendOptNeedsDisabled |= reason; 3781 } 3782 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3783 } 3784 3785 private void setWifiState(int wifiState) { 3786 final int previousWifiState = mWifiState.get(); 3787 3788 try { 3789 if (wifiState == WIFI_STATE_ENABLED) { 3790 mBatteryStats.noteWifiOn(); 3791 } else if (wifiState == WIFI_STATE_DISABLED) { 3792 mBatteryStats.noteWifiOff(); 3793 } 3794 } catch (RemoteException e) { 3795 loge("Failed to note battery stats in wifi"); 3796 } 3797 3798 mWifiState.set(wifiState); 3799 3800 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3801 3802 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3803 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3804 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3805 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3806 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3807 } 3808 3809 private void setWifiApState(int wifiApState, int reason) { 3810 final int previousWifiApState = mWifiApState.get(); 3811 3812 try { 3813 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3814 mBatteryStats.noteWifiOn(); 3815 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3816 mBatteryStats.noteWifiOff(); 3817 } 3818 } catch (RemoteException e) { 3819 loge("Failed to note battery stats in wifi"); 3820 } 3821 3822 // Update state 3823 mWifiApState.set(wifiApState); 3824 3825 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3826 3827 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3828 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3829 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3830 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3831 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3832 //only set reason number when softAP start failed 3833 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3834 } 3835 3836 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3837 } 3838 3839 private static final String IE_STR = "ie="; 3840 private static final String ID_STR = "id="; 3841 private static final String BSSID_STR = "bssid="; 3842 private static final String FREQ_STR = "freq="; 3843 private static final String LEVEL_STR = "level="; 3844 private static final String TSF_STR = "tsf="; 3845 private static final String FLAGS_STR = "flags="; 3846 private static final String SSID_STR = "ssid="; 3847 private static final String DELIMITER_STR = "===="; 3848 private static final String END_STR = "####"; 3849 3850 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3851 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3852 3853 /** 3854 * Format: 3855 * <p/> 3856 * id=1 3857 * bssid=68:7f:76:d7:1a:6e 3858 * freq=2412 3859 * level=-44 3860 * tsf=1344626243700342 3861 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3862 * ssid=zfdy 3863 * ==== 3864 * id=2 3865 * bssid=68:5f:74:d7:1a:6f 3866 * freq=5180 3867 * level=-73 3868 * tsf=1344626243700373 3869 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3870 * ssid=zuby 3871 * ==== 3872 */ 3873 private void setScanResults() { 3874 mNumScanResultsKnown = 0; 3875 mNumScanResultsReturned = 0; 3876 String bssid = ""; 3877 int level = 0; 3878 int freq = 0; 3879 long tsf = 0; 3880 String flags = ""; 3881 WifiSsid wifiSsid = null; 3882 String scanResults; 3883 String tmpResults; 3884 StringBuffer scanResultsBuf = new StringBuffer(); 3885 int sid = 0; 3886 3887 while (true) { 3888 tmpResults = mWifiNative.scanResults(sid); 3889 if (TextUtils.isEmpty(tmpResults)) break; 3890 scanResultsBuf.append(tmpResults); 3891 scanResultsBuf.append("\n"); 3892 String[] lines = tmpResults.split("\n"); 3893 sid = -1; 3894 for (int i = lines.length - 1; i >= 0; i--) { 3895 if (lines[i].startsWith(END_STR)) { 3896 break; 3897 } else if (lines[i].startsWith(ID_STR)) { 3898 try { 3899 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3900 } catch (NumberFormatException e) { 3901 // Nothing to do 3902 } 3903 break; 3904 } 3905 } 3906 if (sid == -1) break; 3907 } 3908 3909 scanResults = scanResultsBuf.toString(); 3910 3911 if (TextUtils.isEmpty(scanResults)) { 3912 mScanResults = new ArrayList<>(); 3913 return; 3914 } 3915 3916 mWifiConfigStore.trimANQPCache(false); 3917 3918 // note that all these splits and substrings keep references to the original 3919 // huge string buffer while the amount we really want is generally pretty small 3920 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3921 synchronized (mScanResultCache) { 3922 mScanResults = new ArrayList<>(); 3923 String[] lines = scanResults.split("\n"); 3924 final int bssidStrLen = BSSID_STR.length(); 3925 final int flagLen = FLAGS_STR.length(); 3926 String infoElements = null; 3927 List<String> anqpLines = null; 3928 3929 for (String line : lines) { 3930 if (line.startsWith(BSSID_STR)) { 3931 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3932 } else if (line.startsWith(FREQ_STR)) { 3933 try { 3934 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3935 } catch (NumberFormatException e) { 3936 freq = 0; 3937 } 3938 } else if (line.startsWith(LEVEL_STR)) { 3939 try { 3940 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3941 /* some implementations avoid negative values by adding 256 3942 * so we need to adjust for that here. 3943 */ 3944 if (level > 0) level -= 256; 3945 } catch (NumberFormatException e) { 3946 level = 0; 3947 } 3948 } else if (line.startsWith(TSF_STR)) { 3949 try { 3950 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3951 } catch (NumberFormatException e) { 3952 tsf = 0; 3953 } 3954 } else if (line.startsWith(FLAGS_STR)) { 3955 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3956 } else if (line.startsWith(SSID_STR)) { 3957 wifiSsid = WifiSsid.createFromAsciiEncoded( 3958 line.substring(SSID_STR.length())); 3959 } else if (line.startsWith(IE_STR)) { 3960 infoElements = line; 3961 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3962 if (anqpLines == null) { 3963 anqpLines = new ArrayList<>(); 3964 } 3965 anqpLines.add(line); 3966 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3967 if (bssid != null) { 3968 try { 3969 NetworkDetail networkDetail = 3970 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3971 3972 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3973 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3974 logd(String.format( 3975 "Inconsistent SSID on BSSID '%s': '%s' vs '%s': %s", 3976 bssid, xssid, networkDetail.getSSID(), infoElements)); 3977 } 3978 3979 if (networkDetail.hasInterworking()) { 3980 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3981 } 3982 3983 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3984 if (scanDetail != null) { 3985 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3986 flags, freq, tsf); 3987 } else { 3988 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3989 flags, level, freq, tsf); 3990 mScanResultCache.put(networkDetail, scanDetail); 3991 } 3992 3993 mNumScanResultsReturned++; // Keep track of how many scan results we got 3994 // as part of this scan's processing 3995 mScanResults.add(scanDetail); 3996 } catch (IllegalArgumentException iae) { 3997 Log.d(TAG, "Failed to parse information elements: " + iae); 3998 } 3999 } 4000 bssid = null; 4001 level = 0; 4002 freq = 0; 4003 tsf = 0; 4004 flags = ""; 4005 wifiSsid = null; 4006 infoElements = null; 4007 anqpLines = null; 4008 } 4009 } 4010 } 4011 4012 /* don't attempt autojoin if last connect attempt was just scheduled */ 4013 boolean attemptAutoJoin = 4014 (System.currentTimeMillis() - lastConnectAttemptTimestamp) > CONNECT_TIMEOUT_MSEC; 4015 SupplicantState state = mWifiInfo.getSupplicantState(); 4016 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 4017 if (getCurrentState() == mRoamingState 4018 || getCurrentState() == mObtainingIpState 4019 || getCurrentState() == mScanModeState 4020 || getCurrentState() == mDisconnectingState 4021 || (getCurrentState() == mConnectedState 4022 && !getEnableAutoJoinWhenAssociated()) 4023 || linkDebouncing 4024 || state == SupplicantState.ASSOCIATING 4025 || state == SupplicantState.AUTHENTICATING 4026 || state == SupplicantState.FOUR_WAY_HANDSHAKE 4027 || state == SupplicantState.GROUP_HANDSHAKE 4028 || (/* keep autojoin enabled if user has manually selected a wifi network, 4029 so as to make sure we reliably remain connected to this network */ 4030 mConnectionRequests == 0 && selection == null) 4031 || mInDelayedStop) { 4032 // Dont attempt auto-joining again while we are already attempting to join 4033 // and/or obtaining Ip address 4034 attemptAutoJoin = false; 4035 } 4036 if (DBG) { 4037 if (selection == null) { 4038 selection = "<none>"; 4039 } 4040 logd("wifi setScanResults state" + getCurrentState() 4041 + " sup_state=" + state 4042 + " debouncing=" + linkDebouncing 4043 + " mConnectionRequests=" + mConnectionRequests 4044 + " selection=" + selection 4045 + " mNumScanResultsReturned " + mNumScanResultsReturned 4046 + " mScanResults " + mScanResults.size()); 4047 } 4048 if (attemptAutoJoin) { 4049 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 4050 } 4051 // Loose last selected configuration if we have been disconnected for 5 minutes 4052 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 4053 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 4054 } 4055 4056 if (attemptAutoJoin) { 4057 synchronized (mScanResultCache) { 4058 // AutoJoincontroller will directly acces the scan result list and update it with 4059 // ScanResult status 4060 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 4061 } 4062 } 4063 if (linkDebouncing) { 4064 // If debouncing, we dont re-select a SSID or BSSID hence 4065 // there is no need to call the network selection code 4066 // in WifiAutoJoinController, instead, 4067 // just try to reconnect to the same SSID by triggering a roam 4068 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4069 } 4070 } 4071 4072 /* 4073 * Fetch RSSI, linkspeed, and frequency on current connection 4074 */ 4075 private void fetchRssiLinkSpeedAndFrequencyNative() { 4076 int newRssi = -1; 4077 int newLinkSpeed = -1; 4078 int newFrequency = -1; 4079 4080 String signalPoll = mWifiNative.signalPoll(); 4081 4082 if (signalPoll != null) { 4083 String[] lines = signalPoll.split("\n"); 4084 for (String line : lines) { 4085 String[] prop = line.split("="); 4086 if (prop.length < 2) continue; 4087 try { 4088 if (prop[0].equals("RSSI")) { 4089 newRssi = Integer.parseInt(prop[1]); 4090 } else if (prop[0].equals("LINKSPEED")) { 4091 newLinkSpeed = Integer.parseInt(prop[1]); 4092 } else if (prop[0].equals("FREQUENCY")) { 4093 newFrequency = Integer.parseInt(prop[1]); 4094 } 4095 } catch (NumberFormatException e) { 4096 //Ignore, defaults on rssi and linkspeed are assigned 4097 } 4098 } 4099 } 4100 4101 if (PDBG) { 4102 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" 4103 + Integer.toString(newRssi) + " linkspeed=" 4104 + Integer.toString(newLinkSpeed)); 4105 } 4106 4107 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4108 // screen out invalid values 4109 /* some implementations avoid negative values by adding 256 4110 * so we need to adjust for that here. 4111 */ 4112 if (newRssi > 0) newRssi -= 256; 4113 mWifiInfo.setRssi(newRssi); 4114 /* 4115 * Rather then sending the raw RSSI out every time it 4116 * changes, we precalculate the signal level that would 4117 * be displayed in the status bar, and only send the 4118 * broadcast if that much more coarse-grained number 4119 * changes. This cuts down greatly on the number of 4120 * broadcasts, at the cost of not informing others 4121 * interested in RSSI of all the changes in signal 4122 * level. 4123 */ 4124 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4125 if (newSignalLevel != mLastSignalLevel) { 4126 updateCapabilities(getCurrentWifiConfiguration()); 4127 sendRssiChangeBroadcast(newRssi); 4128 } 4129 mLastSignalLevel = newSignalLevel; 4130 } else { 4131 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4132 updateCapabilities(getCurrentWifiConfiguration()); 4133 } 4134 4135 if (newLinkSpeed != -1) { 4136 mWifiInfo.setLinkSpeed(newLinkSpeed); 4137 } 4138 if (newFrequency > 0) { 4139 if (ScanResult.is5GHz(newFrequency)) { 4140 mWifiConnectionStatistics.num5GhzConnected++; 4141 } 4142 if (ScanResult.is24GHz(newFrequency)) { 4143 mWifiConnectionStatistics.num24GhzConnected++; 4144 } 4145 mWifiInfo.setFrequency(newFrequency); 4146 } 4147 mWifiConfigStore.updateConfiguration(mWifiInfo); 4148 } 4149 4150 /** 4151 * Determine if we need to switch network: 4152 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4153 * - match the uregncy of the switch versus the packet usage at the interface 4154 */ 4155 boolean shouldSwitchNetwork(int networkDelta) { 4156 int delta; 4157 if (networkDelta <= 0) { 4158 return false; 4159 } 4160 delta = networkDelta; 4161 if (mWifiInfo != null) { 4162 if (!getEnableAutoJoinWhenAssociated() 4163 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4164 // If AutoJoin while associated is not enabled, 4165 // we should never switch network when already associated 4166 delta = -1000; 4167 } else { 4168 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4169 // TODO: at the interface. We should also discriminate between ucast and mcast, 4170 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4171 // TODO: broadcasts 4172 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4173 delta -= 999; 4174 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4175 delta -= 6; 4176 } 4177 logd("shouldSwitchNetwork " 4178 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4179 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4180 + " delta " + networkDelta + " -> " + delta); 4181 } 4182 } else { 4183 logd("shouldSwitchNetwork " 4184 + " delta " + networkDelta + " -> " + delta); 4185 } 4186 if (delta > 0) { 4187 return true; 4188 } 4189 return false; 4190 } 4191 4192 // Polling has completed, hence we wont have a score anymore 4193 private void cleanWifiScore() { 4194 mWifiInfo.txBadRate = 0; 4195 mWifiInfo.txSuccessRate = 0; 4196 mWifiInfo.txRetriesRate = 0; 4197 mWifiInfo.rxSuccessRate = 0; 4198 } 4199 4200 int mBadLinkspeedcount = 0; 4201 4202 // For debug, provide information about the last scoring operation 4203 String wifiScoringReport = null; 4204 4205 private void calculateWifiScore(WifiLinkLayerStats stats) { 4206 StringBuilder sb = new StringBuilder(); 4207 4208 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4209 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4210 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4211 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4212 < mWifiConfigStore.badLinkSpeed5); 4213 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4214 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4215 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4216 >= mWifiConfigStore.goodLinkSpeed5); 4217 4218 if (isBadLinkspeed) { 4219 if (mBadLinkspeedcount < 6) 4220 mBadLinkspeedcount++; 4221 } else { 4222 if (mBadLinkspeedcount > 0) 4223 mBadLinkspeedcount--; 4224 } 4225 4226 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4227 if (isGoodLinkspeed) sb.append(" gl"); 4228 4229 /** 4230 * We want to make sure that we use the 24GHz RSSI thresholds if 4231 * there are 2.4GHz scan results 4232 * otherwise we end up lowering the score based on 5GHz values 4233 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4234 * We also might unblacklist the configuation based on 2.4GHz 4235 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4236 */ 4237 boolean use24Thresholds = false; 4238 boolean homeNetworkBoost = false; 4239 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4240 ScanDetailCache scanDetailCache = 4241 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4242 if (currentConfiguration != null && scanDetailCache != null) { 4243 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4244 if (currentConfiguration.visibility != null) { 4245 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4246 && currentConfiguration.visibility.rssi24 4247 >= (currentConfiguration.visibility.rssi5 - 2)) { 4248 use24Thresholds = true; 4249 } 4250 } 4251 if (scanDetailCache.size() <= 6 4252 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4253 && currentConfiguration.allowedKeyManagement. 4254 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4255 // A PSK network with less than 6 known BSSIDs 4256 // This is most likely a home network and thus we want to stick to wifi more 4257 homeNetworkBoost = true; 4258 } 4259 } 4260 if (homeNetworkBoost) sb.append(" hn"); 4261 if (use24Thresholds) sb.append(" u24"); 4262 4263 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4264 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4265 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4266 4267 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4268 4269 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4270 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4271 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4272 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4273 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4274 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4275 4276 if (isBadRSSI) sb.append(" br"); 4277 if (isLowRSSI) sb.append(" lr"); 4278 if (isHighRSSI) sb.append(" hr"); 4279 4280 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4281 if (currentConfiguration != null && 4282 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4283 if (isBadRSSI) { 4284 currentConfiguration.numTicksAtBadRSSI++; 4285 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4286 // We remained associated for a compound amount of time while passing 4287 // traffic, hence loose the corresponding user triggered disabled stats 4288 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4289 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4290 } 4291 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4292 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4293 } 4294 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4295 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4296 } 4297 currentConfiguration.numTicksAtBadRSSI = 0; 4298 } 4299 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4300 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4301 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4302 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4303 score = score - 5; 4304 penalizedDueToUserTriggeredDisconnect = 1; 4305 sb.append(" p1"); 4306 } 4307 } else if (isLowRSSI) { 4308 currentConfiguration.numTicksAtLowRSSI++; 4309 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4310 // We remained associated for a compound amount of time while passing 4311 // traffic, hence loose the corresponding user triggered disabled stats 4312 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4313 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4314 } 4315 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4316 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4317 } 4318 currentConfiguration.numTicksAtLowRSSI = 0; 4319 } 4320 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4321 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4322 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4323 score = score - 5; 4324 penalizedDueToUserTriggeredDisconnect = 2; 4325 sb.append(" p2"); 4326 } 4327 } else if (!isHighRSSI) { 4328 currentConfiguration.numTicksAtNotHighRSSI++; 4329 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4330 // We remained associated for a compound amount of time while passing 4331 // traffic, hence loose the corresponding user triggered disabled stats 4332 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4333 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4334 } 4335 currentConfiguration.numTicksAtNotHighRSSI = 0; 4336 } 4337 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4338 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4339 score = score - 5; 4340 penalizedDueToUserTriggeredDisconnect = 3; 4341 sb.append(" p3"); 4342 } 4343 } 4344 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4345 currentConfiguration.numTicksAtLowRSSI, 4346 currentConfiguration.numTicksAtNotHighRSSI)); 4347 } 4348 4349 if (PDBG) { 4350 String rssiStatus = ""; 4351 if (isBadRSSI) rssiStatus += " badRSSI "; 4352 else if (isHighRSSI) rssiStatus += " highRSSI "; 4353 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4354 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4355 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4356 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4357 + " score=" + Integer.toString(mWifiInfo.score) 4358 + rssiStatus 4359 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4360 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4361 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4362 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4363 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4364 } 4365 4366 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4367 && (isBadRSSI || isLowRSSI)) { 4368 // Link is stuck 4369 if (mWifiInfo.linkStuckCount < 5) 4370 mWifiInfo.linkStuckCount += 1; 4371 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4372 if (PDBG) logd(" bad link -> stuck count =" 4373 + Integer.toString(mWifiInfo.linkStuckCount)); 4374 } else if (mWifiInfo.txBadRate < 0.3) { 4375 if (mWifiInfo.linkStuckCount > 0) 4376 mWifiInfo.linkStuckCount -= 1; 4377 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4378 if (PDBG) logd(" good link -> stuck count =" 4379 + Integer.toString(mWifiInfo.linkStuckCount)); 4380 } 4381 4382 sb.append(String.format(" [%d", score)); 4383 4384 if (mWifiInfo.linkStuckCount > 1) { 4385 // Once link gets stuck for more than 3 seconds, start reducing the score 4386 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4387 } 4388 sb.append(String.format(",%d", score)); 4389 4390 if (isBadLinkspeed) { 4391 score -= 4; 4392 if (PDBG) { 4393 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4394 + " score=" + Integer.toString(score)); 4395 } 4396 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4397 score += 4; // So as bad rssi alone dont kill us 4398 } 4399 sb.append(String.format(",%d", score)); 4400 4401 if (isBadRSSI) { 4402 if (mWifiInfo.badRssiCount < 7) 4403 mWifiInfo.badRssiCount += 1; 4404 } else if (isLowRSSI) { 4405 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4406 if (mWifiInfo.badRssiCount > 0) { 4407 // Decrement bad Rssi count 4408 mWifiInfo.badRssiCount -= 1; 4409 } 4410 } else { 4411 mWifiInfo.badRssiCount = 0; 4412 mWifiInfo.lowRssiCount = 0; 4413 } 4414 4415 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4416 sb.append(String.format(",%d", score)); 4417 4418 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4419 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4420 + " --> score " + Integer.toString(score)); 4421 4422 4423 if (isHighRSSI) { 4424 score += 5; 4425 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4426 } 4427 sb.append(String.format(",%d]", score)); 4428 4429 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4430 4431 //sanitize boundaries 4432 if (score > NetworkAgent.WIFI_BASE_SCORE) 4433 score = NetworkAgent.WIFI_BASE_SCORE; 4434 if (score < 0) 4435 score = 0; 4436 4437 //report score 4438 if (score != mWifiInfo.score) { 4439 if (DBG) { 4440 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4441 } 4442 mWifiInfo.score = score; 4443 if (mNetworkAgent != null) { 4444 mNetworkAgent.sendNetworkScore(score); 4445 } 4446 } 4447 wifiScoringReport = sb.toString(); 4448 } 4449 4450 public double getTxPacketRate() { 4451 if (mWifiInfo != null) { 4452 return mWifiInfo.txSuccessRate; 4453 } 4454 return -1; 4455 } 4456 4457 public double getRxPacketRate() { 4458 if (mWifiInfo != null) { 4459 return mWifiInfo.rxSuccessRate; 4460 } 4461 return -1; 4462 } 4463 4464 /** 4465 * Fetch TX packet counters on current connection 4466 */ 4467 private void fetchPktcntNative(RssiPacketCountInfo info) { 4468 String pktcntPoll = mWifiNative.pktcntPoll(); 4469 4470 if (pktcntPoll != null) { 4471 String[] lines = pktcntPoll.split("\n"); 4472 for (String line : lines) { 4473 String[] prop = line.split("="); 4474 if (prop.length < 2) continue; 4475 try { 4476 if (prop[0].equals("TXGOOD")) { 4477 info.txgood = Integer.parseInt(prop[1]); 4478 } else if (prop[0].equals("TXBAD")) { 4479 info.txbad = Integer.parseInt(prop[1]); 4480 } 4481 } catch (NumberFormatException e) { 4482 // Ignore 4483 } 4484 } 4485 } 4486 } 4487 4488 private boolean clearIPv4Address(String iface) { 4489 try { 4490 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4491 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4492 mNwService.setInterfaceConfig(iface, ifcg); 4493 return true; 4494 } catch (RemoteException e) { 4495 return false; 4496 } 4497 } 4498 4499 private boolean isProvisioned(LinkProperties lp) { 4500 return lp.isProvisioned() || 4501 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4502 } 4503 4504 /** 4505 * Creates a new LinkProperties object by merging information from various sources. 4506 * <p/> 4507 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4508 * netlink, static configuration, ...). When one of these sources of information has updated 4509 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4510 * information that came from other sources. Instead, when one of those sources has new 4511 * information, we update the object that tracks the information from that source and then 4512 * call this method to integrate the change into a new LinkProperties object for subsequent 4513 * comparison with mLinkProperties. 4514 * <p/> 4515 * The information used to build LinkProperties is currently obtained as follows: 4516 * - Interface name: set in the constructor. 4517 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4518 * - IPv4 routes, DNS servers, and domains: DHCP. 4519 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4520 * - HTTP proxy: the wifi config store. 4521 */ 4522 private LinkProperties makeLinkProperties() { 4523 LinkProperties newLp = new LinkProperties(); 4524 4525 // Interface name, proxy, and TCP buffer sizes are locally configured. 4526 newLp.setInterfaceName(mInterfaceName); 4527 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4528 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4529 newLp.setTcpBufferSizes(mTcpBufferSizes); 4530 } 4531 4532 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4533 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4534 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4535 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4536 newLp.addRoute(route); 4537 } 4538 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4539 // Only add likely reachable DNS servers. 4540 // TODO: investigate deleting this. 4541 if (newLp.isReachable(dns)) { 4542 newLp.addDnsServer(dns); 4543 } 4544 } 4545 4546 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4547 synchronized (mDhcpResultsLock) { 4548 // Even when we're using static configuration, we don't need to look at the config 4549 // store, because static IP configuration also populates mDhcpResults. 4550 if ((mDhcpResults != null)) { 4551 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4552 newLp.addRoute(route); 4553 } 4554 for (InetAddress dns : mDhcpResults.dnsServers) { 4555 // Only add likely reachable DNS servers. 4556 // TODO: investigate deleting this. 4557 if (newLp.isReachable(dns)) { 4558 newLp.addDnsServer(dns); 4559 } 4560 } 4561 newLp.setDomains(mDhcpResults.domains); 4562 } 4563 } 4564 4565 return newLp; 4566 } 4567 4568 private void updateLinkProperties(int reason) { 4569 LinkProperties newLp = makeLinkProperties(); 4570 4571 final boolean linkChanged = !newLp.equals(mLinkProperties); 4572 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4573 final boolean isProvisioned = isProvisioned(newLp); 4574 // TODO: Teach LinkProperties how to understand static assignment 4575 // and simplify all this provisioning change detection logic by 4576 // unifying it under LinkProperties.compareProvisioning(). 4577 final boolean lostProvisioning = 4578 (wasProvisioned && !isProvisioned) || 4579 (mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address()) || 4580 (mLinkProperties.isIPv6Provisioned() && !newLp.isIPv6Provisioned()); 4581 final DetailedState detailedState = getNetworkDetailedState(); 4582 4583 if (linkChanged) { 4584 if (DBG) { 4585 log("Link configuration changed for netId: " + mLastNetworkId 4586 + " old: " + mLinkProperties + " new: " + newLp); 4587 } 4588 mLinkProperties = newLp; 4589 if (mIpReachabilityMonitor != null) { 4590 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4591 } 4592 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4593 } 4594 4595 if (lostProvisioning) { 4596 log("Lost IP layer provisioning!" + 4597 " was: " + mLinkProperties + 4598 " now: " + newLp); 4599 } 4600 4601 if (DBG) { 4602 StringBuilder sb = new StringBuilder(); 4603 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4604 sb.append(" state: " + detailedState); 4605 sb.append(" reason: " + smToString(reason)); 4606 4607 if (mLinkProperties != null) { 4608 if (mLinkProperties.hasIPv4Address()) { 4609 sb.append(" v4"); 4610 } 4611 if (mLinkProperties.hasGlobalIPv6Address()) { 4612 sb.append(" v6"); 4613 } 4614 if (mLinkProperties.hasIPv4DefaultRoute()) { 4615 sb.append(" v4r"); 4616 } 4617 if (mLinkProperties.hasIPv6DefaultRoute()) { 4618 sb.append(" v6r"); 4619 } 4620 if (mLinkProperties.hasIPv4DnsServer()) { 4621 sb.append(" v4dns"); 4622 } 4623 if (mLinkProperties.hasIPv6DnsServer()) { 4624 sb.append(" v6dns"); 4625 } 4626 if (isProvisioned) { 4627 sb.append(" isprov"); 4628 } 4629 } 4630 logd(sb.toString()); 4631 } 4632 4633 // If we just configured or lost IP configuration, do the needful. 4634 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4635 // here because those should only be called if we're attempting to connect or already 4636 // connected, whereas updateLinkProperties can be called at any time. 4637 switch (reason) { 4638 case DhcpStateMachine.DHCP_SUCCESS: 4639 case CMD_STATIC_IP_SUCCESS: 4640 // IPv4 provisioning succeded. Advance to connected state. 4641 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4642 if (!isProvisioned) { 4643 // Can never happen unless DHCP reports success but isProvisioned thinks the 4644 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4645 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4646 // TODO: disconnect here instead. If our configuration is not usable, there's no 4647 // point in staying connected, and if mLinkProperties is out of sync with 4648 // reality, that will cause problems in the future. 4649 logd("IPv4 config succeeded, but not provisioned"); 4650 } 4651 break; 4652 4653 case DhcpStateMachine.DHCP_FAILURE: 4654 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4655 // give up and disconnect. 4656 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4657 if (!isProvisioned || lostProvisioning) { 4658 sendMessage(CMD_IP_CONFIGURATION_LOST); 4659 } else { 4660 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4661 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4662 4663 // To be sure we don't get stuck with a non-working network if all we had is 4664 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4665 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4666 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4667 // necessary for provisioning, its deletion will cause us to disconnect. 4668 // 4669 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4670 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4671 // not return true if we're using DHCP and don't have an IPv4 default route. So 4672 // for now it's only here for extra redundancy. However, it will increase 4673 // robustness if we move to getting IPv4 routes from netlink as well. 4674 loge("DHCP failure: provisioned, clearing IPv4 address."); 4675 if (!clearIPv4Address(mInterfaceName)) { 4676 sendMessage(CMD_IP_CONFIGURATION_LOST); 4677 } 4678 } 4679 break; 4680 4681 case CMD_STATIC_IP_FAILURE: 4682 // Static configuration was invalid, or an error occurred in applying it. Give up. 4683 sendMessage(CMD_IP_CONFIGURATION_LOST); 4684 break; 4685 4686 case CMD_UPDATE_LINKPROPERTIES: 4687 // IP addresses, DNS servers, etc. changed. Act accordingly. 4688 if (lostProvisioning) { 4689 // We no longer have a usable network configuration. Disconnect. 4690 sendMessage(CMD_IP_CONFIGURATION_LOST); 4691 } else if (!wasProvisioned && isProvisioned) { 4692 // We have a usable IPv6-only config. Advance to connected state. 4693 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4694 } 4695 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4696 // If anything has changed and we're already connected, send out a notification. 4697 sendLinkConfigurationChangedBroadcast(); 4698 } 4699 break; 4700 } 4701 } 4702 4703 /** 4704 * Clears all our link properties. 4705 */ 4706 private void clearLinkProperties() { 4707 // Clear the link properties obtained from DHCP and netlink. 4708 synchronized (mDhcpResultsLock) { 4709 if (mDhcpResults != null) { 4710 mDhcpResults.clear(); 4711 } 4712 } 4713 mNetlinkTracker.clearLinkProperties(); 4714 if (mIpReachabilityMonitor != null) { 4715 mIpReachabilityMonitor.clearLinkProperties(); 4716 } 4717 4718 // Now clear the merged link properties. 4719 mLinkProperties.clear(); 4720 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4721 } 4722 4723 /** 4724 * try to update default route MAC address. 4725 */ 4726 private String updateDefaultRouteMacAddress(int timeout) { 4727 String address = null; 4728 for (RouteInfo route : mLinkProperties.getRoutes()) { 4729 if (route.isDefaultRoute() && route.hasGateway()) { 4730 InetAddress gateway = route.getGateway(); 4731 if (gateway instanceof Inet4Address) { 4732 if (PDBG) { 4733 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4734 + gateway.getHostAddress()); 4735 } 4736 address = macAddressFromRoute(gateway.getHostAddress()); 4737 /* The gateway's MAC address is known */ 4738 if ((address == null) && (timeout > 0)) { 4739 boolean reachable = false; 4740 try { 4741 reachable = gateway.isReachable(timeout); 4742 } catch (Exception e) { 4743 loge("updateDefaultRouteMacAddress exception reaching :" 4744 + gateway.getHostAddress()); 4745 4746 } finally { 4747 if (reachable == true) { 4748 4749 address = macAddressFromRoute(gateway.getHostAddress()); 4750 if (PDBG) { 4751 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4752 + gateway.getHostAddress() + " found " + address); 4753 } 4754 } 4755 } 4756 } 4757 if (address != null) { 4758 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4759 } 4760 } 4761 } 4762 } 4763 return address; 4764 } 4765 4766 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4767 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4768 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4769 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4770 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4771 } 4772 4773 private void sendRssiChangeBroadcast(final int newRssi) { 4774 try { 4775 mBatteryStats.noteWifiRssiChanged(newRssi); 4776 } catch (RemoteException e) { 4777 // Won't happen. 4778 } 4779 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4780 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4781 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4782 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4783 } 4784 4785 private void sendNetworkStateChangeBroadcast(String bssid) { 4786 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4787 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4788 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4789 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4790 if (bssid != null) 4791 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4792 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4793 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4794 // We no longer report MAC address to third-parties and our code does 4795 // not rely on this broadcast, so just send the default MAC address. 4796 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4797 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4798 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4799 } 4800 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4801 } 4802 4803 private WifiInfo getWiFiInfoForUid(int uid) { 4804 if (Binder.getCallingUid() == Process.myUid()) { 4805 return mWifiInfo; 4806 } 4807 4808 WifiInfo result = new WifiInfo(mWifiInfo); 4809 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4810 4811 IBinder binder = ServiceManager.getService("package"); 4812 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4813 4814 try { 4815 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4816 uid) == PackageManager.PERMISSION_GRANTED) { 4817 result.setMacAddress(mWifiInfo.getMacAddress()); 4818 } 4819 } catch (RemoteException e) { 4820 Log.e(TAG, "Error checking receiver permission", e); 4821 } 4822 4823 return result; 4824 } 4825 4826 private void sendLinkConfigurationChangedBroadcast() { 4827 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4828 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4829 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4830 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4831 } 4832 4833 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4834 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4835 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4836 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4837 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4838 } 4839 4840 /** 4841 * Record the detailed state of a network. 4842 * 4843 * @param state the new {@code DetailedState} 4844 */ 4845 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4846 boolean hidden = false; 4847 4848 if (linkDebouncing || isRoaming()) { 4849 // There is generally a confusion in the system about colluding 4850 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4851 // which leads to multiple confusion. 4852 // 4853 // If link is de-bouncing or roaming, we already have an IP address 4854 // as well we were connected and are doing L2 cycles of 4855 // reconnecting or renewing IP address to check that we still have it 4856 // This L2 link flapping should ne be reflected into the Network state 4857 // which is the state of the WiFi Network visible to Layer 3 and applications 4858 // Note that once debouncing and roaming are completed, we will 4859 // set the Network state to where it should be, or leave it as unchanged 4860 // 4861 hidden = true; 4862 } 4863 if (DBG) { 4864 log("setDetailed state, old =" 4865 + mNetworkInfo.getDetailedState() + " and new state=" + state 4866 + " hidden=" + hidden); 4867 } 4868 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4869 // Always indicate that SSID has changed 4870 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4871 if (DBG) { 4872 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4873 } 4874 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4875 sendNetworkStateChangeBroadcast(null); 4876 } 4877 } 4878 if (hidden == true) { 4879 return false; 4880 } 4881 4882 if (state != mNetworkInfo.getDetailedState()) { 4883 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4884 if (mNetworkAgent != null) { 4885 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4886 } 4887 sendNetworkStateChangeBroadcast(null); 4888 return true; 4889 } 4890 return false; 4891 } 4892 4893 private DetailedState getNetworkDetailedState() { 4894 return mNetworkInfo.getDetailedState(); 4895 } 4896 4897 private SupplicantState handleSupplicantStateChange(Message message) { 4898 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4899 SupplicantState state = stateChangeResult.state; 4900 // Supplicant state change 4901 // [31-13] Reserved for future use 4902 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4903 // 50023 supplicant_state_changed (custom|1|5) 4904 mWifiInfo.setSupplicantState(state); 4905 // Network id is only valid when we start connecting 4906 if (SupplicantState.isConnecting(state)) { 4907 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4908 } else { 4909 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4910 } 4911 4912 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4913 4914 if (mWhiteListedSsids != null 4915 && mWhiteListedSsids.length > 0 4916 && stateChangeResult.wifiSsid != null) { 4917 String SSID = stateChangeResult.wifiSsid.toString(); 4918 String currentSSID = mWifiInfo.getSSID(); 4919 if (SSID != null 4920 && currentSSID != null 4921 && !SSID.equals(WifiSsid.NONE)) { 4922 // Remove quote before comparing 4923 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4924 && SSID.charAt(SSID.length() - 1) == '"') 4925 { 4926 SSID = SSID.substring(1, SSID.length() - 1); 4927 } 4928 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4929 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4930 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4931 } 4932 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4933 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4934 targetWificonfiguration 4935 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4936 transitionTo(mRoamingState); 4937 } 4938 } 4939 } 4940 4941 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4942 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4943 4944 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4945 4946 return state; 4947 } 4948 4949 /** 4950 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4951 * using the interface, stopping DHCP & disabling interface 4952 */ 4953 private void handleNetworkDisconnect() { 4954 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4955 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4956 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4957 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4958 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4959 4960 stopRssiMonitoringOffload(); 4961 4962 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4963 4964 stopDhcp(); 4965 4966 try { 4967 mNwService.clearInterfaceAddresses(mInterfaceName); 4968 mNwService.disableIpv6(mInterfaceName); 4969 } catch (Exception e) { 4970 loge("Failed to clear addresses or disable ipv6" + e); 4971 } 4972 4973 /* Reset data structures */ 4974 mBadLinkspeedcount = 0; 4975 mWifiInfo.reset(); 4976 linkDebouncing = false; 4977 /* Reset roaming parameters */ 4978 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4979 4980 /** 4981 * fullBandConnectedTimeIntervalMilli: 4982 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4983 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4984 * Initialize to sane value = 20 seconds 4985 */ 4986 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4987 4988 setNetworkDetailedState(DetailedState.DISCONNECTED); 4989 if (mNetworkAgent != null) { 4990 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4991 mNetworkAgent = null; 4992 } 4993 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4994 4995 /* Clear network properties */ 4996 clearLinkProperties(); 4997 4998 /* Cend event to CM & network change broadcast */ 4999 sendNetworkStateChangeBroadcast(mLastBssid); 5000 5001 /* Cancel auto roam requests */ 5002 autoRoamSetBSSID(mLastNetworkId, "any"); 5003 5004 mLastBssid = null; 5005 registerDisconnected(); 5006 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5007 } 5008 5009 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 5010 /* Socket connection can be lost when we do a graceful shutdown 5011 * or when the driver is hung. Ensure supplicant is stopped here. 5012 */ 5013 if (killSupplicant) { 5014 mWifiMonitor.killSupplicant(mP2pSupported); 5015 } 5016 mWifiNative.closeSupplicantConnection(); 5017 sendSupplicantConnectionChangedBroadcast(false); 5018 setWifiState(WIFI_STATE_DISABLED); 5019 } 5020 5021 void handlePreDhcpSetup() { 5022 mDhcpActive = true; 5023 if (!mBluetoothConnectionActive) { 5024 /* 5025 * There are problems setting the Wi-Fi driver's power 5026 * mode to active when bluetooth coexistence mode is 5027 * enabled or sense. 5028 * <p> 5029 * We set Wi-Fi to active mode when 5030 * obtaining an IP address because we've found 5031 * compatibility issues with some routers with low power 5032 * mode. 5033 * <p> 5034 * In order for this active power mode to properly be set, 5035 * we disable coexistence mode until we're done with 5036 * obtaining an IP address. One exception is if we 5037 * are currently connected to a headset, since disabling 5038 * coexistence would interrupt that connection. 5039 */ 5040 // Disable the coexistence mode 5041 mWifiNative.setBluetoothCoexistenceMode( 5042 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 5043 } 5044 5045 // Disable power save and suspend optimizations during DHCP 5046 // Note: The order here is important for now. Brcm driver changes 5047 // power settings when we control suspend mode optimizations. 5048 // TODO: Remove this comment when the driver is fixed. 5049 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 5050 mWifiNative.setPowerSave(false); 5051 5052 // Update link layer stats 5053 getWifiLinkLayerStats(false); 5054 5055 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 5056 Message msg = new Message(); 5057 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 5058 msg.arg1 = WifiP2pServiceImpl.ENABLED; 5059 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 5060 msg.obj = mDhcpStateMachine; 5061 mWifiP2pChannel.sendMessage(msg); 5062 } 5063 5064 5065 private boolean useLegacyDhcpClient() { 5066 return Settings.Global.getInt( 5067 mContext.getContentResolver(), 5068 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 5069 } 5070 5071 private void maybeInitDhcpStateMachine() { 5072 if (mDhcpStateMachine == null) { 5073 if (useLegacyDhcpClient()) { 5074 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 5075 mContext, WifiStateMachine.this, mInterfaceName); 5076 } else { 5077 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 5078 mContext, WifiStateMachine.this, mInterfaceName); 5079 } 5080 } 5081 } 5082 5083 void startDhcp() { 5084 maybeInitDhcpStateMachine(); 5085 mDhcpStateMachine.registerForPreDhcpNotification(); 5086 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 5087 } 5088 5089 void renewDhcp() { 5090 maybeInitDhcpStateMachine(); 5091 mDhcpStateMachine.registerForPreDhcpNotification(); 5092 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 5093 } 5094 5095 void stopDhcp() { 5096 if (mDhcpStateMachine != null) { 5097 /* In case we were in middle of DHCP operation restore back powermode */ 5098 handlePostDhcpSetup(); 5099 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 5100 } 5101 } 5102 5103 void handlePostDhcpSetup() { 5104 /* Restore power save and suspend optimizations */ 5105 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 5106 mWifiNative.setPowerSave(true); 5107 5108 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 5109 5110 // Set the coexistence mode back to its default value 5111 mWifiNative.setBluetoothCoexistenceMode( 5112 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 5113 5114 mDhcpActive = false; 5115 } 5116 5117 void connectScanningService() { 5118 5119 if (mWifiScanner == null) { 5120 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 5121 } 5122 } 5123 5124 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 5125 5126 if (PDBG) { 5127 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 5128 logd("link address " + dhcpResults.ipAddress); 5129 } 5130 5131 Inet4Address addr; 5132 synchronized (mDhcpResultsLock) { 5133 mDhcpResults = dhcpResults; 5134 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5135 } 5136 5137 if (isRoaming()) { 5138 int previousAddress = mWifiInfo.getIpAddress(); 5139 int newAddress = NetworkUtils.inetAddressToInt(addr); 5140 if (previousAddress != newAddress) { 5141 logd("handleIPv4Success, roaming and address changed" + 5142 mWifiInfo + " got: " + addr); 5143 } 5144 } 5145 mWifiInfo.setInetAddress(addr); 5146 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5147 updateLinkProperties(reason); 5148 } 5149 5150 private void handleSuccessfulIpConfiguration() { 5151 mLastSignalLevel = -1; // Force update of signal strength 5152 WifiConfiguration c = getCurrentWifiConfiguration(); 5153 if (c != null) { 5154 // Reset IP failure tracking 5155 c.numConnectionFailures = 0; 5156 5157 // Tell the framework whether the newly connected network is trusted or untrusted. 5158 updateCapabilities(c); 5159 } 5160 if (c != null) { 5161 ScanResult result = getCurrentScanResult(); 5162 if (result == null) { 5163 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5164 c.configKey()); 5165 } else { 5166 // Clear the per BSSID failure count 5167 result.numIpConfigFailures = 0; 5168 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5169 // any BSSID, even though it may already have a non zero ip failure count, 5170 // this will typically happen if the user walks away and come back to his arrea 5171 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5172 // in supplicant for a couple of hours or a day 5173 mWifiConfigStore.clearBssidBlacklist(); 5174 } 5175 } 5176 } 5177 5178 private void handleIPv4Failure(int reason) { 5179 synchronized(mDhcpResultsLock) { 5180 if (mDhcpResults != null) { 5181 mDhcpResults.clear(); 5182 } 5183 } 5184 if (PDBG) { 5185 logd("handleIPv4Failure"); 5186 } 5187 updateLinkProperties(reason); 5188 } 5189 5190 private void handleIpConfigurationLost() { 5191 mWifiInfo.setInetAddress(null); 5192 mWifiInfo.setMeteredHint(false); 5193 5194 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5195 "DHCP FAILURE", mWifiInfo.getBSSID()); 5196 5197 /* DHCP times out after about 30 seconds, we do a 5198 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5199 */ 5200 mWifiNative.disconnect(); 5201 } 5202 5203 // TODO: De-duplicated this and handleIpConfigurationLost(). 5204 private void handleIpReachabilityLost() { 5205 // No need to be told about any additional neighbors that might also 5206 // become unreachable--quiet them now while we start disconnecting. 5207 if (mIpReachabilityMonitor != null) { 5208 mIpReachabilityMonitor.clearLinkProperties(); 5209 } 5210 5211 mWifiInfo.setInetAddress(null); 5212 mWifiInfo.setMeteredHint(false); 5213 5214 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5215 5216 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5217 mWifiNative.disconnect(); 5218 } 5219 5220 private int convertFrequencyToChannelNumber(int frequency) { 5221 if (frequency >= 2412 && frequency <= 2484) { 5222 return (frequency -2412) / 5 + 1; 5223 } else if (frequency >= 5170 && frequency <=5825) { 5224 //DFS is included 5225 return (frequency -5170) / 5 + 34; 5226 } else { 5227 return 0; 5228 } 5229 } 5230 5231 private int chooseApChannel(int apBand) { 5232 int apChannel; 5233 int[] channel; 5234 5235 if (apBand == 0) { 5236 if (mWifiApConfigStore.allowed2GChannel == null || 5237 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5238 //most safe channel to use 5239 if(DBG) { 5240 Log.d(TAG, "No specified 2G allowed channel list"); 5241 } 5242 apChannel = 6; 5243 } else { 5244 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5245 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5246 } 5247 } else { 5248 //5G without DFS 5249 channel = mWifiNative.getChannelsForBand(2); 5250 if (channel != null && channel.length > 0) { 5251 apChannel = channel[mRandom.nextInt(channel.length)]; 5252 apChannel = convertFrequencyToChannelNumber(apChannel); 5253 } else { 5254 Log.e(TAG, "SoftAp do not get available channel list"); 5255 apChannel = 0; 5256 } 5257 } 5258 5259 if(DBG) { 5260 Log.d(TAG, "SoftAp set on channel " + apChannel); 5261 } 5262 5263 return apChannel; 5264 } 5265 5266 /* SoftAP configuration */ 5267 private boolean enableSoftAp() { 5268 if (WifiNative.getInterfaces() != 0) { 5269 if (!mWifiNative.toggleInterface(0)) { 5270 if (DBG) Log.e(TAG, "toggleInterface failed"); 5271 return false; 5272 } 5273 } else { 5274 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5275 } 5276 5277 try { 5278 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5279 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5280 } catch (Exception e) { 5281 Log.e(TAG, "Failed to reload AP firmware " + e); 5282 } 5283 5284 if (WifiNative.startHal() == false) { 5285 /* starting HAL is optional */ 5286 Log.e(TAG, "Failed to start HAL"); 5287 } 5288 return true; 5289 } 5290 5291 /* Current design is to not set the config on a running hostapd but instead 5292 * stop and start tethering when user changes config on a running access point 5293 * 5294 * TODO: Add control channel setup through hostapd that allows changing config 5295 * on a running daemon 5296 */ 5297 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5298 // set channel 5299 final WifiConfiguration config = new WifiConfiguration(configuration); 5300 5301 if (DBG) { 5302 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5303 } 5304 5305 //We need HAL support to set country code and get available channel list, if HAL is 5306 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5307 if (mWifiNative.isHalStarted()) { 5308 //set country code through HAL Here 5309 String countryCode = getCurrentCountryCode(); 5310 5311 if (countryCode != null) { 5312 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5313 if (config.apBand != 0) { 5314 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5315 //countrycode is mandatory for 5GHz 5316 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5317 return; 5318 } 5319 } 5320 } else { 5321 if (config.apBand != 0) { 5322 //countrycode is mandatory for 5GHz 5323 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5324 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5325 return; 5326 } 5327 } 5328 5329 if (config.apChannel == 0) { 5330 config.apChannel = chooseApChannel(config.apBand); 5331 if (config.apChannel == 0) { 5332 if(mWifiNative.isGetChannelsForBandSupported()) { 5333 //fail to get available channel 5334 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5335 return; 5336 } else { 5337 //for some old device, wifiHal may not be supportedget valid channels are not 5338 //supported 5339 config.apBand = 0; 5340 config.apChannel = 6; 5341 } 5342 } 5343 } 5344 } else { 5345 //for some old device, wifiHal may not be supported 5346 config.apBand = 0; 5347 config.apChannel = 6; 5348 } 5349 // Start hostapd on a separate thread 5350 new Thread(new Runnable() { 5351 public void run() { 5352 try { 5353 mNwService.startAccessPoint(config, mInterfaceName); 5354 } catch (Exception e) { 5355 loge("Exception in softap start " + e); 5356 try { 5357 mNwService.stopAccessPoint(mInterfaceName); 5358 mNwService.startAccessPoint(config, mInterfaceName); 5359 } catch (Exception e1) { 5360 loge("Exception in softap re-start " + e1); 5361 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5362 return; 5363 } 5364 } 5365 if (DBG) log("Soft AP start successful"); 5366 sendMessage(CMD_START_AP_SUCCESS); 5367 } 5368 }).start(); 5369 } 5370 5371 private byte[] macAddressFromString(String macString) { 5372 String[] macBytes = macString.split(":"); 5373 if (macBytes.length != 6) { 5374 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5375 } 5376 byte[] mac = new byte[6]; 5377 for (int i = 0; i < macBytes.length; i++) { 5378 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5379 mac[i] = hexVal.byteValue(); 5380 } 5381 return mac; 5382 } 5383 5384 /* 5385 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5386 * so as to record MAC address of default gateway. 5387 **/ 5388 private String macAddressFromRoute(String ipAddress) { 5389 String macAddress = null; 5390 BufferedReader reader = null; 5391 try { 5392 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5393 5394 // Skip over the line bearing colum titles 5395 String line = reader.readLine(); 5396 5397 while ((line = reader.readLine()) != null) { 5398 String[] tokens = line.split("[ ]+"); 5399 if (tokens.length < 6) { 5400 continue; 5401 } 5402 5403 // ARP column format is 5404 // Address HWType HWAddress Flags Mask IFace 5405 String ip = tokens[0]; 5406 String mac = tokens[3]; 5407 5408 if (ipAddress.equals(ip)) { 5409 macAddress = mac; 5410 break; 5411 } 5412 } 5413 5414 if (macAddress == null) { 5415 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5416 "/proc/net/arp"); 5417 } 5418 5419 } catch (FileNotFoundException e) { 5420 loge("Could not open /proc/net/arp to lookup mac address"); 5421 } catch (IOException e) { 5422 loge("Could not read /proc/net/arp to lookup mac address"); 5423 } finally { 5424 try { 5425 if (reader != null) { 5426 reader.close(); 5427 } 5428 } catch (IOException e) { 5429 // Do nothing 5430 } 5431 } 5432 return macAddress; 5433 5434 } 5435 5436 private class WifiNetworkFactory extends NetworkFactory { 5437 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5438 super(l, c, TAG, f); 5439 } 5440 5441 @Override 5442 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5443 ++mConnectionRequests; 5444 } 5445 5446 @Override 5447 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5448 --mConnectionRequests; 5449 } 5450 5451 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5452 pw.println("mConnectionRequests " + mConnectionRequests); 5453 } 5454 5455 } 5456 5457 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5458 private int mUntrustedReqCount; 5459 5460 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5461 super(l, c, tag, f); 5462 } 5463 5464 @Override 5465 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5466 if (!networkRequest.networkCapabilities.hasCapability( 5467 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5468 if (++mUntrustedReqCount == 1) { 5469 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5470 } 5471 } 5472 } 5473 5474 @Override 5475 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5476 if (!networkRequest.networkCapabilities.hasCapability( 5477 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5478 if (--mUntrustedReqCount == 0) { 5479 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5480 } 5481 } 5482 } 5483 5484 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5485 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5486 } 5487 } 5488 5489 void maybeRegisterNetworkFactory() { 5490 if (mNetworkFactory == null) { 5491 checkAndSetConnectivityInstance(); 5492 if (mCm != null) { 5493 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5494 NETWORKTYPE, mNetworkCapabilitiesFilter); 5495 mNetworkFactory.setScoreFilter(60); 5496 mNetworkFactory.register(); 5497 5498 // We can't filter untrusted network in the capabilities filter because a trusted 5499 // network would still satisfy a request that accepts untrusted ones. 5500 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5501 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5502 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5503 mUntrustedNetworkFactory.register(); 5504 } 5505 } 5506 } 5507 5508 /******************************************************** 5509 * HSM states 5510 *******************************************************/ 5511 5512 class DefaultState extends State { 5513 @Override 5514 public boolean processMessage(Message message) { 5515 logStateAndMessage(message, getClass().getSimpleName()); 5516 5517 switch (message.what) { 5518 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5519 AsyncChannel ac = (AsyncChannel) message.obj; 5520 if (ac == mWifiP2pChannel) { 5521 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5522 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5523 } else { 5524 loge("WifiP2pService connection failure, error=" + message.arg1); 5525 } 5526 } else { 5527 loge("got HALF_CONNECTED for unknown channel"); 5528 } 5529 break; 5530 } 5531 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5532 AsyncChannel ac = (AsyncChannel) message.obj; 5533 if (ac == mWifiP2pChannel) { 5534 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5535 //TODO: Re-establish connection to state machine after a delay 5536 // mWifiP2pChannel.connect(mContext, getHandler(), 5537 // mWifiP2pManager.getMessenger()); 5538 } 5539 break; 5540 } 5541 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5542 mBluetoothConnectionActive = (message.arg1 != 5543 BluetoothAdapter.STATE_DISCONNECTED); 5544 break; 5545 /* Synchronous call returns */ 5546 case CMD_PING_SUPPLICANT: 5547 case CMD_ENABLE_NETWORK: 5548 case CMD_ADD_OR_UPDATE_NETWORK: 5549 case CMD_REMOVE_NETWORK: 5550 case CMD_SAVE_CONFIG: 5551 replyToMessage(message, message.what, FAILURE); 5552 break; 5553 case CMD_GET_CAPABILITY_FREQ: 5554 replyToMessage(message, message.what, null); 5555 break; 5556 case CMD_GET_CONFIGURED_NETWORKS: 5557 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5558 break; 5559 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5560 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5561 break; 5562 case CMD_ENABLE_RSSI_POLL: 5563 mEnableRssiPolling = (message.arg1 == 1); 5564 break; 5565 case CMD_SET_HIGH_PERF_MODE: 5566 if (message.arg1 == 1) { 5567 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5568 } else { 5569 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5570 } 5571 break; 5572 case CMD_BOOT_COMPLETED: 5573 maybeRegisterNetworkFactory(); 5574 break; 5575 case CMD_SCREEN_STATE_CHANGED: 5576 handleScreenStateChanged(message.arg1 != 0); 5577 break; 5578 /* Discard */ 5579 case CMD_START_SCAN: 5580 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5581 break; 5582 case CMD_START_SUPPLICANT: 5583 case CMD_STOP_SUPPLICANT: 5584 case CMD_STOP_SUPPLICANT_FAILED: 5585 case CMD_START_DRIVER: 5586 case CMD_STOP_DRIVER: 5587 case CMD_DELAYED_STOP_DRIVER: 5588 case CMD_DRIVER_START_TIMED_OUT: 5589 case CMD_START_AP: 5590 case CMD_START_AP_SUCCESS: 5591 case CMD_START_AP_FAILURE: 5592 case CMD_STOP_AP: 5593 case CMD_TETHER_STATE_CHANGE: 5594 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5595 case CMD_DISCONNECT: 5596 case CMD_RECONNECT: 5597 case CMD_REASSOCIATE: 5598 case CMD_RELOAD_TLS_AND_RECONNECT: 5599 case WifiMonitor.SUP_CONNECTION_EVENT: 5600 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5601 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5602 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5603 case WifiMonitor.SCAN_RESULTS_EVENT: 5604 case WifiMonitor.SCAN_FAILED_EVENT: 5605 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5606 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5607 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5608 case WifiMonitor.WPS_OVERLAP_EVENT: 5609 case CMD_BLACKLIST_NETWORK: 5610 case CMD_CLEAR_BLACKLIST: 5611 case CMD_SET_OPERATIONAL_MODE: 5612 case CMD_SET_FREQUENCY_BAND: 5613 case CMD_RSSI_POLL: 5614 case CMD_ENABLE_ALL_NETWORKS: 5615 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5616 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5617 /* Handled by WifiApConfigStore */ 5618 case CMD_SET_AP_CONFIG: 5619 case CMD_SET_AP_CONFIG_COMPLETED: 5620 case CMD_REQUEST_AP_CONFIG: 5621 case CMD_RESPONSE_AP_CONFIG: 5622 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5623 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5624 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5625 case CMD_DISABLE_P2P_RSP: 5626 case WifiMonitor.SUP_REQUEST_IDENTITY: 5627 case CMD_TEST_NETWORK_DISCONNECT: 5628 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5629 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5630 case CMD_TARGET_BSSID: 5631 case CMD_AUTO_CONNECT: 5632 case CMD_AUTO_ROAM: 5633 case CMD_AUTO_SAVE_NETWORK: 5634 case CMD_ASSOCIATED_BSSID: 5635 case CMD_UNWANTED_NETWORK: 5636 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5637 case CMD_ROAM_WATCHDOG_TIMER: 5638 case CMD_DISABLE_EPHEMERAL_NETWORK: 5639 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5640 case CMD_STARTED_PNO_DBG: 5641 case CMD_STARTED_GSCAN_DBG: 5642 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5643 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5644 break; 5645 case CMD_SET_COUNTRY_CODE: 5646 String country = (String) message.obj; 5647 final boolean persist = (message.arg2 == 1); 5648 final int sequence = message.arg1; 5649 if (sequence != mCountryCodeSequence.get()) { 5650 if (DBG) log("set country code ignored due to sequnce num"); 5651 break; 5652 } 5653 5654 if (persist) { 5655 country = country.toUpperCase(Locale.ROOT); 5656 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5657 Settings.Global.putString(mContext.getContentResolver(), 5658 Settings.Global.WIFI_COUNTRY_CODE, 5659 country == null ? "" : country); 5660 } 5661 5662 break; 5663 case DhcpStateMachine.CMD_ON_QUIT: 5664 mDhcpStateMachine = null; 5665 break; 5666 case CMD_SET_SUSPEND_OPT_ENABLED: 5667 if (message.arg1 == 1) { 5668 mSuspendWakeLock.release(); 5669 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5670 } else { 5671 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5672 } 5673 break; 5674 case WifiMonitor.DRIVER_HUNG_EVENT: 5675 setSupplicantRunning(false); 5676 setSupplicantRunning(true); 5677 break; 5678 case WifiManager.CONNECT_NETWORK: 5679 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5680 WifiManager.BUSY); 5681 break; 5682 case WifiManager.FORGET_NETWORK: 5683 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5684 WifiManager.BUSY); 5685 break; 5686 case WifiManager.SAVE_NETWORK: 5687 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5688 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5689 WifiManager.BUSY); 5690 break; 5691 case WifiManager.START_WPS: 5692 replyToMessage(message, WifiManager.WPS_FAILED, 5693 WifiManager.BUSY); 5694 break; 5695 case WifiManager.CANCEL_WPS: 5696 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5697 WifiManager.BUSY); 5698 break; 5699 case WifiManager.DISABLE_NETWORK: 5700 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5701 WifiManager.BUSY); 5702 break; 5703 case WifiManager.RSSI_PKTCNT_FETCH: 5704 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5705 WifiManager.BUSY); 5706 break; 5707 case CMD_GET_SUPPORTED_FEATURES: 5708 int featureSet = WifiNative.getSupportedFeatureSet(); 5709 replyToMessage(message, message.what, featureSet); 5710 break; 5711 case CMD_FIRMWARE_ALERT: 5712 if (mWifiLogger != null) { 5713 byte[] buffer = (byte[])message.obj; 5714 mWifiLogger.captureAlertData(message.arg1, buffer); 5715 } 5716 break; 5717 case CMD_GET_LINK_LAYER_STATS: 5718 // Not supported hence reply with error message 5719 replyToMessage(message, message.what, null); 5720 break; 5721 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5722 NetworkInfo info = (NetworkInfo) message.obj; 5723 mP2pConnected.set(info.isConnected()); 5724 break; 5725 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5726 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5727 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5728 break; 5729 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5730 case CMD_UPDATE_LINKPROPERTIES: 5731 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5732 break; 5733 case CMD_GET_MATCHING_CONFIG: 5734 replyToMessage(message, message.what); 5735 break; 5736 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5737 case CMD_IP_CONFIGURATION_LOST: 5738 case CMD_IP_REACHABILITY_LOST: 5739 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5740 break; 5741 case CMD_GET_CONNECTION_STATISTICS: 5742 replyToMessage(message, message.what, mWifiConnectionStatistics); 5743 break; 5744 case CMD_REMOVE_APP_CONFIGURATIONS: 5745 deferMessage(message); 5746 break; 5747 case CMD_REMOVE_USER_CONFIGURATIONS: 5748 deferMessage(message); 5749 break; 5750 case CMD_START_IP_PACKET_OFFLOAD: 5751 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5752 message.arg1, 5753 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5754 break; 5755 case CMD_STOP_IP_PACKET_OFFLOAD: 5756 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5757 message.arg1, 5758 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5759 break; 5760 case CMD_START_RSSI_MONITORING_OFFLOAD: 5761 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5762 break; 5763 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5764 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5765 break; 5766 default: 5767 loge("Error! unhandled message" + message); 5768 break; 5769 } 5770 return HANDLED; 5771 } 5772 } 5773 5774 class InitialState extends State { 5775 @Override 5776 public void enter() { 5777 WifiNative.stopHal(); 5778 mWifiNative.unloadDriver(); 5779 if (mWifiP2pChannel == null) { 5780 mWifiP2pChannel = new AsyncChannel(); 5781 mWifiP2pChannel.connect(mContext, getHandler(), 5782 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5783 } 5784 5785 if (mWifiApConfigChannel == null) { 5786 mWifiApConfigChannel = new AsyncChannel(); 5787 mWifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5788 mContext, getHandler()); 5789 mWifiApConfigStore.loadApConfiguration(); 5790 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5791 mWifiApConfigStore.getMessenger()); 5792 } 5793 5794 if (mWifiConfigStore.enableHalBasedPno.get()) { 5795 // make sure developer Settings are in sync with the config option 5796 mHalBasedPnoEnableInDevSettings = true; 5797 } 5798 } 5799 @Override 5800 public boolean processMessage(Message message) { 5801 logStateAndMessage(message, getClass().getSimpleName()); 5802 switch (message.what) { 5803 case CMD_START_SUPPLICANT: 5804 if (mWifiNative.loadDriver()) { 5805 try { 5806 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5807 } catch (Exception e) { 5808 loge("Failed to reload STA firmware " + e); 5809 // Continue 5810 } 5811 5812 try { 5813 // A runtime crash can leave the interface up and 5814 // IP addresses configured, and this affects 5815 // connectivity when supplicant starts up. 5816 // Ensure interface is down and we have no IP 5817 // addresses before a supplicant start. 5818 mNwService.setInterfaceDown(mInterfaceName); 5819 mNwService.clearInterfaceAddresses(mInterfaceName); 5820 5821 // Set privacy extensions 5822 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5823 5824 // IPv6 is enabled only as long as access point is connected since: 5825 // - IPv6 addresses and routes stick around after disconnection 5826 // - kernel is unaware when connected and fails to start IPv6 negotiation 5827 // - kernel can start autoconfiguration when 802.1x is not complete 5828 mNwService.disableIpv6(mInterfaceName); 5829 } catch (RemoteException re) { 5830 loge("Unable to change interface settings: " + re); 5831 } catch (IllegalStateException ie) { 5832 loge("Unable to change interface settings: " + ie); 5833 } 5834 5835 /* Stop a running supplicant after a runtime restart 5836 * Avoids issues with drivers that do not handle interface down 5837 * on a running supplicant properly. 5838 */ 5839 mWifiMonitor.killSupplicant(mP2pSupported); 5840 5841 if (WifiNative.startHal() == false) { 5842 /* starting HAL is optional */ 5843 loge("Failed to start HAL"); 5844 } 5845 5846 if (mWifiNative.startSupplicant(mP2pSupported)) { 5847 setWifiState(WIFI_STATE_ENABLING); 5848 if (DBG) log("Supplicant start successful"); 5849 mWifiMonitor.startMonitoring(); 5850 transitionTo(mSupplicantStartingState); 5851 } else { 5852 loge("Failed to start supplicant!"); 5853 } 5854 } else { 5855 loge("Failed to load driver"); 5856 } 5857 break; 5858 case CMD_START_AP: 5859 if (mWifiNative.loadDriver() == false) { 5860 loge("Failed to load driver for softap"); 5861 } else { 5862 if (enableSoftAp() == true) { 5863 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5864 transitionTo(mSoftApStartingState); 5865 } else { 5866 setWifiApState(WIFI_AP_STATE_FAILED, 5867 WifiManager.SAP_START_FAILURE_GENERAL); 5868 transitionTo(mInitialState); 5869 } 5870 } 5871 break; 5872 default: 5873 return NOT_HANDLED; 5874 } 5875 return HANDLED; 5876 } 5877 } 5878 5879 class SupplicantStartingState extends State { 5880 private void initializeWpsDetails() { 5881 String detail; 5882 detail = SystemProperties.get("ro.product.name", ""); 5883 if (!mWifiNative.setDeviceName(detail)) { 5884 loge("Failed to set device name " + detail); 5885 } 5886 detail = SystemProperties.get("ro.product.manufacturer", ""); 5887 if (!mWifiNative.setManufacturer(detail)) { 5888 loge("Failed to set manufacturer " + detail); 5889 } 5890 detail = SystemProperties.get("ro.product.model", ""); 5891 if (!mWifiNative.setModelName(detail)) { 5892 loge("Failed to set model name " + detail); 5893 } 5894 detail = SystemProperties.get("ro.product.model", ""); 5895 if (!mWifiNative.setModelNumber(detail)) { 5896 loge("Failed to set model number " + detail); 5897 } 5898 detail = SystemProperties.get("ro.serialno", ""); 5899 if (!mWifiNative.setSerialNumber(detail)) { 5900 loge("Failed to set serial number " + detail); 5901 } 5902 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5903 loge("Failed to set WPS config methods"); 5904 } 5905 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5906 loge("Failed to set primary device type " + mPrimaryDeviceType); 5907 } 5908 } 5909 5910 @Override 5911 public boolean processMessage(Message message) { 5912 logStateAndMessage(message, getClass().getSimpleName()); 5913 5914 switch(message.what) { 5915 case WifiMonitor.SUP_CONNECTION_EVENT: 5916 if (DBG) log("Supplicant connection established"); 5917 setWifiState(WIFI_STATE_ENABLED); 5918 mSupplicantRestartCount = 0; 5919 /* Reset the supplicant state to indicate the supplicant 5920 * state is not known at this time */ 5921 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5922 /* Initialize data structures */ 5923 mLastBssid = null; 5924 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5925 mLastSignalLevel = -1; 5926 5927 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5928 /* set frequency band of operation */ 5929 setFrequencyBand(); 5930 mWifiNative.enableSaveConfig(); 5931 mWifiConfigStore.loadAndEnableAllNetworks(); 5932 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5933 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5934 } 5935 initializeWpsDetails(); 5936 5937 sendSupplicantConnectionChangedBroadcast(true); 5938 transitionTo(mDriverStartedState); 5939 break; 5940 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5941 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5942 loge("Failed to setup control channel, restart supplicant"); 5943 mWifiMonitor.killSupplicant(mP2pSupported); 5944 transitionTo(mInitialState); 5945 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5946 } else { 5947 loge("Failed " + mSupplicantRestartCount + 5948 " times to start supplicant, unload driver"); 5949 mSupplicantRestartCount = 0; 5950 setWifiState(WIFI_STATE_UNKNOWN); 5951 transitionTo(mInitialState); 5952 } 5953 break; 5954 case CMD_START_SUPPLICANT: 5955 case CMD_STOP_SUPPLICANT: 5956 case CMD_START_AP: 5957 case CMD_STOP_AP: 5958 case CMD_START_DRIVER: 5959 case CMD_STOP_DRIVER: 5960 case CMD_SET_OPERATIONAL_MODE: 5961 case CMD_SET_COUNTRY_CODE: 5962 case CMD_SET_FREQUENCY_BAND: 5963 case CMD_START_PACKET_FILTERING: 5964 case CMD_STOP_PACKET_FILTERING: 5965 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5966 deferMessage(message); 5967 break; 5968 default: 5969 return NOT_HANDLED; 5970 } 5971 return HANDLED; 5972 } 5973 } 5974 5975 class SupplicantStartedState extends State { 5976 @Override 5977 public void enter() { 5978 /* Wifi is available as long as we have a connection to supplicant */ 5979 mNetworkInfo.setIsAvailable(true); 5980 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5981 5982 int defaultInterval = mContext.getResources().getInteger( 5983 R.integer.config_wifi_supplicant_scan_interval); 5984 5985 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5986 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5987 defaultInterval); 5988 5989 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5990 mWifiNative.setExternalSim(true); 5991 5992 /* turn on use of DFS channels */ 5993 WifiNative.setDfsFlag(true); 5994 5995 /* set country code */ 5996 initializeCountryCode(); 5997 5998 setRandomMacOui(); 5999 mWifiNative.enableAutoConnect(false); 6000 } 6001 6002 @Override 6003 public boolean processMessage(Message message) { 6004 logStateAndMessage(message, getClass().getSimpleName()); 6005 6006 switch(message.what) { 6007 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 6008 if (mP2pSupported) { 6009 transitionTo(mWaitForP2pDisableState); 6010 } else { 6011 transitionTo(mSupplicantStoppingState); 6012 } 6013 break; 6014 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 6015 loge("Connection lost, restart supplicant"); 6016 handleSupplicantConnectionLoss(true); 6017 handleNetworkDisconnect(); 6018 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6019 if (mP2pSupported) { 6020 transitionTo(mWaitForP2pDisableState); 6021 } else { 6022 transitionTo(mInitialState); 6023 } 6024 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 6025 break; 6026 case WifiMonitor.SCAN_RESULTS_EVENT: 6027 case WifiMonitor.SCAN_FAILED_EVENT: 6028 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 6029 noteScanEnd(); 6030 setScanResults(); 6031 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 6032 /* Just updated results from full scan, let apps know about this */ 6033 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 6034 sendScanResultsAvailableBroadcast(scanSucceeded); 6035 } 6036 mSendScanResultsBroadcast = false; 6037 mIsScanOngoing = false; 6038 mIsFullScanOngoing = false; 6039 if (mBufferedScanMsg.size() > 0) 6040 sendMessage(mBufferedScanMsg.remove()); 6041 break; 6042 case CMD_PING_SUPPLICANT: 6043 boolean ok = mWifiNative.ping(); 6044 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6045 break; 6046 case CMD_GET_CAPABILITY_FREQ: 6047 String freqs = mWifiNative.getFreqCapability(); 6048 replyToMessage(message, message.what, freqs); 6049 break; 6050 case CMD_START_AP: 6051 /* Cannot start soft AP while in client mode */ 6052 loge("Failed to start soft AP with a running supplicant"); 6053 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 6054 break; 6055 case CMD_SET_OPERATIONAL_MODE: 6056 mOperationalMode = message.arg1; 6057 mWifiConfigStore. 6058 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6059 break; 6060 case CMD_TARGET_BSSID: 6061 // Trying to associate to this BSSID 6062 if (message.obj != null) { 6063 mTargetRoamBSSID = (String) message.obj; 6064 } 6065 break; 6066 case CMD_GET_LINK_LAYER_STATS: 6067 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 6068 if (stats == null) { 6069 // When firmware doesnt support link layer stats, return an empty object 6070 stats = new WifiLinkLayerStats(); 6071 } 6072 replyToMessage(message, message.what, stats); 6073 break; 6074 case CMD_SET_COUNTRY_CODE: 6075 String country = (String) message.obj; 6076 final boolean persist = (message.arg2 == 1); 6077 final int sequence = message.arg1; 6078 if (sequence != mCountryCodeSequence.get()) { 6079 if (DBG) log("set country code ignored due to sequnce num"); 6080 break; 6081 } 6082 6083 country = country.toUpperCase(Locale.ROOT); 6084 6085 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 6086 6087 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 6088 if (mWifiNative.setCountryCode(country)) { 6089 mDriverSetCountryCode = country; 6090 } else { 6091 loge("Failed to set country code " + country); 6092 } 6093 } 6094 6095 if (persist) { 6096 Settings.Global.putString(mContext.getContentResolver(), 6097 Settings.Global.WIFI_COUNTRY_CODE, 6098 country == null ? "" : country); 6099 } 6100 6101 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 6102 break; 6103 default: 6104 return NOT_HANDLED; 6105 } 6106 return HANDLED; 6107 } 6108 6109 @Override 6110 public void exit() { 6111 mNetworkInfo.setIsAvailable(false); 6112 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 6113 } 6114 } 6115 6116 class SupplicantStoppingState extends State { 6117 @Override 6118 public void enter() { 6119 /* Send any reset commands to supplicant before shutting it down */ 6120 handleNetworkDisconnect(); 6121 if (mDhcpStateMachine != null) { 6122 mDhcpStateMachine.doQuit(); 6123 } 6124 6125 String suppState = System.getProperty("init.svc.wpa_supplicant"); 6126 if (suppState == null) suppState = "unknown"; 6127 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 6128 if (p2pSuppState == null) p2pSuppState = "unknown"; 6129 6130 logd("SupplicantStoppingState: stopSupplicant " 6131 + " init.svc.wpa_supplicant=" + suppState 6132 + " init.svc.p2p_supplicant=" + p2pSuppState); 6133 mWifiMonitor.stopSupplicant(); 6134 6135 /* Send ourselves a delayed message to indicate failure after a wait time */ 6136 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 6137 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 6138 setWifiState(WIFI_STATE_DISABLING); 6139 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6140 } 6141 @Override 6142 public boolean processMessage(Message message) { 6143 logStateAndMessage(message, getClass().getSimpleName()); 6144 6145 switch(message.what) { 6146 case WifiMonitor.SUP_CONNECTION_EVENT: 6147 loge("Supplicant connection received while stopping"); 6148 break; 6149 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6150 if (DBG) log("Supplicant connection lost"); 6151 handleSupplicantConnectionLoss(false); 6152 transitionTo(mInitialState); 6153 break; 6154 case CMD_STOP_SUPPLICANT_FAILED: 6155 if (message.arg1 == mSupplicantStopFailureToken) { 6156 loge("Timed out on a supplicant stop, kill and proceed"); 6157 handleSupplicantConnectionLoss(true); 6158 transitionTo(mInitialState); 6159 } 6160 break; 6161 case CMD_START_SUPPLICANT: 6162 case CMD_STOP_SUPPLICANT: 6163 case CMD_START_AP: 6164 case CMD_STOP_AP: 6165 case CMD_START_DRIVER: 6166 case CMD_STOP_DRIVER: 6167 case CMD_SET_OPERATIONAL_MODE: 6168 case CMD_SET_COUNTRY_CODE: 6169 case CMD_SET_FREQUENCY_BAND: 6170 case CMD_START_PACKET_FILTERING: 6171 case CMD_STOP_PACKET_FILTERING: 6172 deferMessage(message); 6173 break; 6174 default: 6175 return NOT_HANDLED; 6176 } 6177 return HANDLED; 6178 } 6179 } 6180 6181 class DriverStartingState extends State { 6182 private int mTries; 6183 @Override 6184 public void enter() { 6185 mTries = 1; 6186 /* Send ourselves a delayed message to start driver a second time */ 6187 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6188 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6189 } 6190 @Override 6191 public boolean processMessage(Message message) { 6192 logStateAndMessage(message, getClass().getSimpleName()); 6193 6194 switch(message.what) { 6195 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6196 SupplicantState state = handleSupplicantStateChange(message); 6197 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6198 * a state that indicates driver has started, it is ready to 6199 * receive driver commands 6200 */ 6201 if (SupplicantState.isDriverActive(state)) { 6202 transitionTo(mDriverStartedState); 6203 } 6204 break; 6205 case CMD_DRIVER_START_TIMED_OUT: 6206 if (message.arg1 == mDriverStartToken) { 6207 if (mTries >= 2) { 6208 loge("Failed to start driver after " + mTries); 6209 transitionTo(mDriverStoppedState); 6210 } else { 6211 loge("Driver start failed, retrying"); 6212 mWakeLock.acquire(); 6213 mWifiNative.startDriver(); 6214 mWakeLock.release(); 6215 6216 ++mTries; 6217 /* Send ourselves a delayed message to start driver again */ 6218 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6219 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6220 } 6221 } 6222 break; 6223 /* Queue driver commands & connection events */ 6224 case CMD_START_DRIVER: 6225 case CMD_STOP_DRIVER: 6226 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6227 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6228 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6229 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6230 case WifiMonitor.WPS_OVERLAP_EVENT: 6231 case CMD_SET_COUNTRY_CODE: 6232 case CMD_SET_FREQUENCY_BAND: 6233 case CMD_START_PACKET_FILTERING: 6234 case CMD_STOP_PACKET_FILTERING: 6235 case CMD_START_SCAN: 6236 case CMD_DISCONNECT: 6237 case CMD_REASSOCIATE: 6238 case CMD_RECONNECT: 6239 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6240 deferMessage(message); 6241 break; 6242 case WifiMonitor.SCAN_RESULTS_EVENT: 6243 case WifiMonitor.SCAN_FAILED_EVENT: 6244 // Loose scan results obtained in Driver Starting state, they can only confuse 6245 // the state machine 6246 break; 6247 default: 6248 return NOT_HANDLED; 6249 } 6250 return HANDLED; 6251 } 6252 } 6253 6254 class DriverStartedState extends State { 6255 @Override 6256 public void enter() { 6257 6258 if (PDBG) { 6259 logd("DriverStartedState enter"); 6260 } 6261 6262 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6263 mIsRunning = true; 6264 mInDelayedStop = false; 6265 mDelayedStopCounter++; 6266 updateBatteryWorkSource(null); 6267 /** 6268 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6269 * When this mode is on, some of the low-level scan parameters used by the 6270 * driver are changed to reduce interference with bluetooth 6271 */ 6272 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6273 /* initialize network state */ 6274 setNetworkDetailedState(DetailedState.DISCONNECTED); 6275 6276 /* Remove any filtering on Multicast v6 at start */ 6277 mWifiNative.stopFilteringMulticastV6Packets(); 6278 6279 /* Reset Multicast v4 filtering state */ 6280 if (mFilteringMulticastV4Packets.get()) { 6281 mWifiNative.startFilteringMulticastV4Packets(); 6282 } else { 6283 mWifiNative.stopFilteringMulticastV4Packets(); 6284 } 6285 6286 mDhcpActive = false; 6287 6288 if (mOperationalMode != CONNECT_MODE) { 6289 mWifiNative.disconnect(); 6290 mWifiConfigStore.disableAllNetworks(); 6291 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6292 setWifiState(WIFI_STATE_DISABLED); 6293 } 6294 transitionTo(mScanModeState); 6295 } else { 6296 6297 // Status pulls in the current supplicant state and network connection state 6298 // events over the monitor connection. This helps framework sync up with 6299 // current supplicant state 6300 // TODO: actually check th supplicant status string and make sure the supplicant 6301 // is in disconnecte4d state. 6302 mWifiNative.status(); 6303 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6304 transitionTo(mDisconnectedState); 6305 transitionTo(mDisconnectedState); 6306 } 6307 6308 // We may have missed screen update at boot 6309 if (mScreenBroadcastReceived.get() == false) { 6310 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6311 Context.POWER_SERVICE); 6312 handleScreenStateChanged(powerManager.isScreenOn()); 6313 } else { 6314 // Set the right suspend mode settings 6315 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6316 && mUserWantsSuspendOpt.get()); 6317 } 6318 mWifiNative.setPowerSave(true); 6319 6320 if (mP2pSupported) { 6321 if (mOperationalMode == CONNECT_MODE) { 6322 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6323 } else { 6324 // P2P statemachine starts in disabled state, and is not enabled until 6325 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6326 // keep it disabled. 6327 } 6328 } 6329 6330 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6331 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6332 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6333 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6334 6335 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6336 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6337 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6338 mHalBasedPnoDriverSupported = true; 6339 } 6340 6341 // Enable link layer stats gathering 6342 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6343 6344 if (PDBG) { 6345 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6346 + " feature=" + mHalFeatureSet); 6347 } 6348 } 6349 6350 @Override 6351 public boolean processMessage(Message message) { 6352 logStateAndMessage(message, getClass().getSimpleName()); 6353 6354 switch(message.what) { 6355 case CMD_START_SCAN: 6356 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6357 break; 6358 case CMD_SET_FREQUENCY_BAND: 6359 int band = message.arg1; 6360 if (DBG) log("set frequency band " + band); 6361 if (mWifiNative.setBand(band)) { 6362 6363 if (PDBG) logd("did set frequency band " + band); 6364 6365 mFrequencyBand.set(band); 6366 // Flush old data - like scan results 6367 mWifiNative.bssFlush(); 6368 // Fetch the latest scan results when frequency band is set 6369// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6370 6371 if (PDBG) logd("done set frequency band " + band); 6372 6373 } else { 6374 loge("Failed to set frequency band " + band); 6375 } 6376 break; 6377 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6378 mBluetoothConnectionActive = (message.arg1 != 6379 BluetoothAdapter.STATE_DISCONNECTED); 6380 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6381 break; 6382 case CMD_STOP_DRIVER: 6383 int mode = message.arg1; 6384 6385 /* Already doing a delayed stop */ 6386 if (mInDelayedStop) { 6387 if (DBG) log("Already in delayed stop"); 6388 break; 6389 } 6390 /* disconnect right now, but leave the driver running for a bit */ 6391 mWifiConfigStore.disableAllNetworks(); 6392 6393 mInDelayedStop = true; 6394 mDelayedStopCounter++; 6395 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6396 6397 /* send regular delayed shut down */ 6398 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6399 driverStopIntent.setPackage("android"); 6400 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6401 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6402 DRIVER_STOP_REQUEST, driverStopIntent, 6403 PendingIntent.FLAG_UPDATE_CURRENT); 6404 6405 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6406 + mDriverStopDelayMs, mDriverStopIntent); 6407 break; 6408 case CMD_START_DRIVER: 6409 if (mInDelayedStop) { 6410 mInDelayedStop = false; 6411 mDelayedStopCounter++; 6412 mAlarmManager.cancel(mDriverStopIntent); 6413 if (DBG) log("Delayed stop ignored due to start"); 6414 if (mOperationalMode == CONNECT_MODE) { 6415 mWifiConfigStore.enableAllNetworks(); 6416 } 6417 } 6418 break; 6419 case CMD_DELAYED_STOP_DRIVER: 6420 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6421 if (message.arg1 != mDelayedStopCounter) break; 6422 if (getCurrentState() != mDisconnectedState) { 6423 mWifiNative.disconnect(); 6424 handleNetworkDisconnect(); 6425 } 6426 mWakeLock.acquire(); 6427 mWifiNative.stopDriver(); 6428 mWakeLock.release(); 6429 if (mP2pSupported) { 6430 transitionTo(mWaitForP2pDisableState); 6431 } else { 6432 transitionTo(mDriverStoppingState); 6433 } 6434 break; 6435 case CMD_START_PACKET_FILTERING: 6436 if (message.arg1 == MULTICAST_V6) { 6437 mWifiNative.startFilteringMulticastV6Packets(); 6438 } else if (message.arg1 == MULTICAST_V4) { 6439 mWifiNative.startFilteringMulticastV4Packets(); 6440 } else { 6441 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6442 } 6443 break; 6444 case CMD_STOP_PACKET_FILTERING: 6445 if (message.arg1 == MULTICAST_V6) { 6446 mWifiNative.stopFilteringMulticastV6Packets(); 6447 } else if (message.arg1 == MULTICAST_V4) { 6448 mWifiNative.stopFilteringMulticastV4Packets(); 6449 } else { 6450 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6451 } 6452 break; 6453 case CMD_SET_SUSPEND_OPT_ENABLED: 6454 if (message.arg1 == 1) { 6455 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6456 mSuspendWakeLock.release(); 6457 } else { 6458 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6459 } 6460 break; 6461 case CMD_SET_HIGH_PERF_MODE: 6462 if (message.arg1 == 1) { 6463 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6464 } else { 6465 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6466 } 6467 break; 6468 case CMD_ENABLE_TDLS: 6469 if (message.obj != null) { 6470 String remoteAddress = (String) message.obj; 6471 boolean enable = (message.arg1 == 1); 6472 mWifiNative.startTdls(remoteAddress, enable); 6473 } 6474 break; 6475 case WifiMonitor.ANQP_DONE_EVENT: 6476 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6477 break; 6478 case CMD_STOP_IP_PACKET_OFFLOAD: { 6479 int slot = message.arg1; 6480 int ret = stopWifiIPPacketOffload(slot); 6481 if (mNetworkAgent != null) { 6482 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6483 } 6484 break; 6485 } 6486 default: 6487 return NOT_HANDLED; 6488 } 6489 return HANDLED; 6490 } 6491 @Override 6492 public void exit() { 6493 6494 mWifiLogger.stopLogging(); 6495 6496 mIsRunning = false; 6497 updateBatteryWorkSource(null); 6498 mScanResults = new ArrayList<>(); 6499 6500 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6501 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6502 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6503 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6504 noteScanEnd(); // wrap up any pending request. 6505 mBufferedScanMsg.clear(); 6506 } 6507 } 6508 6509 class WaitForP2pDisableState extends State { 6510 private State mTransitionToState; 6511 @Override 6512 public void enter() { 6513 switch (getCurrentMessage().what) { 6514 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6515 mTransitionToState = mInitialState; 6516 break; 6517 case CMD_DELAYED_STOP_DRIVER: 6518 mTransitionToState = mDriverStoppingState; 6519 break; 6520 case CMD_STOP_SUPPLICANT: 6521 mTransitionToState = mSupplicantStoppingState; 6522 break; 6523 default: 6524 mTransitionToState = mDriverStoppingState; 6525 break; 6526 } 6527 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6528 } 6529 @Override 6530 public boolean processMessage(Message message) { 6531 logStateAndMessage(message, getClass().getSimpleName()); 6532 6533 switch(message.what) { 6534 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6535 transitionTo(mTransitionToState); 6536 break; 6537 /* Defer wifi start/shut and driver commands */ 6538 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6539 case CMD_START_SUPPLICANT: 6540 case CMD_STOP_SUPPLICANT: 6541 case CMD_START_AP: 6542 case CMD_STOP_AP: 6543 case CMD_START_DRIVER: 6544 case CMD_STOP_DRIVER: 6545 case CMD_SET_OPERATIONAL_MODE: 6546 case CMD_SET_COUNTRY_CODE: 6547 case CMD_SET_FREQUENCY_BAND: 6548 case CMD_START_PACKET_FILTERING: 6549 case CMD_STOP_PACKET_FILTERING: 6550 case CMD_START_SCAN: 6551 case CMD_DISCONNECT: 6552 case CMD_REASSOCIATE: 6553 case CMD_RECONNECT: 6554 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6555 deferMessage(message); 6556 break; 6557 default: 6558 return NOT_HANDLED; 6559 } 6560 return HANDLED; 6561 } 6562 } 6563 6564 class DriverStoppingState extends State { 6565 @Override 6566 public boolean processMessage(Message message) { 6567 logStateAndMessage(message, getClass().getSimpleName()); 6568 6569 switch(message.what) { 6570 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6571 SupplicantState state = handleSupplicantStateChange(message); 6572 if (state == SupplicantState.INTERFACE_DISABLED) { 6573 transitionTo(mDriverStoppedState); 6574 } 6575 break; 6576 /* Queue driver commands */ 6577 case CMD_START_DRIVER: 6578 case CMD_STOP_DRIVER: 6579 case CMD_SET_COUNTRY_CODE: 6580 case CMD_SET_FREQUENCY_BAND: 6581 case CMD_START_PACKET_FILTERING: 6582 case CMD_STOP_PACKET_FILTERING: 6583 case CMD_START_SCAN: 6584 case CMD_DISCONNECT: 6585 case CMD_REASSOCIATE: 6586 case CMD_RECONNECT: 6587 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6588 deferMessage(message); 6589 break; 6590 default: 6591 return NOT_HANDLED; 6592 } 6593 return HANDLED; 6594 } 6595 } 6596 6597 class DriverStoppedState extends State { 6598 @Override 6599 public boolean processMessage(Message message) { 6600 logStateAndMessage(message, getClass().getSimpleName()); 6601 switch (message.what) { 6602 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6603 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6604 SupplicantState state = stateChangeResult.state; 6605 // A WEXT bug means that we can be back to driver started state 6606 // unexpectedly 6607 if (SupplicantState.isDriverActive(state)) { 6608 transitionTo(mDriverStartedState); 6609 } 6610 break; 6611 case CMD_START_DRIVER: 6612 mWakeLock.acquire(); 6613 mWifiNative.startDriver(); 6614 mWakeLock.release(); 6615 transitionTo(mDriverStartingState); 6616 break; 6617 default: 6618 return NOT_HANDLED; 6619 } 6620 return HANDLED; 6621 } 6622 } 6623 6624 class ScanModeState extends State { 6625 private int mLastOperationMode; 6626 @Override 6627 public void enter() { 6628 mLastOperationMode = mOperationalMode; 6629 } 6630 @Override 6631 public boolean processMessage(Message message) { 6632 logStateAndMessage(message, getClass().getSimpleName()); 6633 6634 switch(message.what) { 6635 case CMD_SET_OPERATIONAL_MODE: 6636 if (message.arg1 == CONNECT_MODE) { 6637 6638 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6639 setWifiState(WIFI_STATE_ENABLED); 6640 // Load and re-enable networks when going back to enabled state 6641 // This is essential for networks to show up after restore 6642 mWifiConfigStore.loadAndEnableAllNetworks(); 6643 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6644 } else { 6645 mWifiConfigStore.enableAllNetworks(); 6646 } 6647 6648 // Try autojoining with recent network already present in the cache 6649 // If none are found then trigger a scan which will trigger autojoin 6650 // upon reception of scan results event 6651 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6652 startScan(ENABLE_WIFI, 0, null, null); 6653 } 6654 6655 // Loose last selection choice since user toggled WiFi 6656 mWifiConfigStore. 6657 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6658 6659 mOperationalMode = CONNECT_MODE; 6660 transitionTo(mDisconnectedState); 6661 } else { 6662 // Nothing to do 6663 return HANDLED; 6664 } 6665 break; 6666 // Handle scan. All the connection related commands are 6667 // handled only in ConnectModeState 6668 case CMD_START_SCAN: 6669 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6670 break; 6671 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6672 SupplicantState state = handleSupplicantStateChange(message); 6673 if(DBG) log("SupplicantState= " + state); 6674 break; 6675 default: 6676 return NOT_HANDLED; 6677 } 6678 return HANDLED; 6679 } 6680 } 6681 6682 6683 String smToString(Message message) { 6684 return smToString(message.what); 6685 } 6686 6687 String smToString(int what) { 6688 String s = "unknown"; 6689 switch (what) { 6690 case WifiMonitor.DRIVER_HUNG_EVENT: 6691 s = "DRIVER_HUNG_EVENT"; 6692 break; 6693 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6694 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6695 break; 6696 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6697 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6698 break; 6699 case CMD_SET_FREQUENCY_BAND: 6700 s = "CMD_SET_FREQUENCY_BAND"; 6701 break; 6702 case CMD_DELAYED_NETWORK_DISCONNECT: 6703 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6704 break; 6705 case CMD_TEST_NETWORK_DISCONNECT: 6706 s = "CMD_TEST_NETWORK_DISCONNECT"; 6707 break; 6708 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6709 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6710 break; 6711 case CMD_DISABLE_EPHEMERAL_NETWORK: 6712 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6713 break; 6714 case CMD_START_DRIVER: 6715 s = "CMD_START_DRIVER"; 6716 break; 6717 case CMD_STOP_DRIVER: 6718 s = "CMD_STOP_DRIVER"; 6719 break; 6720 case CMD_STOP_SUPPLICANT: 6721 s = "CMD_STOP_SUPPLICANT"; 6722 break; 6723 case CMD_STOP_SUPPLICANT_FAILED: 6724 s = "CMD_STOP_SUPPLICANT_FAILED"; 6725 break; 6726 case CMD_START_SUPPLICANT: 6727 s = "CMD_START_SUPPLICANT"; 6728 break; 6729 case CMD_REQUEST_AP_CONFIG: 6730 s = "CMD_REQUEST_AP_CONFIG"; 6731 break; 6732 case CMD_RESPONSE_AP_CONFIG: 6733 s = "CMD_RESPONSE_AP_CONFIG"; 6734 break; 6735 case CMD_TETHER_STATE_CHANGE: 6736 s = "CMD_TETHER_STATE_CHANGE"; 6737 break; 6738 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6739 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6740 break; 6741 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6742 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6743 break; 6744 case CMD_ADD_OR_UPDATE_NETWORK: 6745 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6746 break; 6747 case CMD_REMOVE_NETWORK: 6748 s = "CMD_REMOVE_NETWORK"; 6749 break; 6750 case CMD_ENABLE_NETWORK: 6751 s = "CMD_ENABLE_NETWORK"; 6752 break; 6753 case CMD_ENABLE_ALL_NETWORKS: 6754 s = "CMD_ENABLE_ALL_NETWORKS"; 6755 break; 6756 case CMD_AUTO_CONNECT: 6757 s = "CMD_AUTO_CONNECT"; 6758 break; 6759 case CMD_AUTO_ROAM: 6760 s = "CMD_AUTO_ROAM"; 6761 break; 6762 case CMD_AUTO_SAVE_NETWORK: 6763 s = "CMD_AUTO_SAVE_NETWORK"; 6764 break; 6765 case CMD_BOOT_COMPLETED: 6766 s = "CMD_BOOT_COMPLETED"; 6767 break; 6768 case DhcpStateMachine.CMD_START_DHCP: 6769 s = "CMD_START_DHCP"; 6770 break; 6771 case DhcpStateMachine.CMD_STOP_DHCP: 6772 s = "CMD_STOP_DHCP"; 6773 break; 6774 case DhcpStateMachine.CMD_RENEW_DHCP: 6775 s = "CMD_RENEW_DHCP"; 6776 break; 6777 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6778 s = "CMD_PRE_DHCP_ACTION"; 6779 break; 6780 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6781 s = "CMD_POST_DHCP_ACTION"; 6782 break; 6783 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6784 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6785 break; 6786 case DhcpStateMachine.CMD_ON_QUIT: 6787 s = "CMD_ON_QUIT"; 6788 break; 6789 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6790 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6791 break; 6792 case WifiManager.DISABLE_NETWORK: 6793 s = "WifiManager.DISABLE_NETWORK"; 6794 break; 6795 case CMD_BLACKLIST_NETWORK: 6796 s = "CMD_BLACKLIST_NETWORK"; 6797 break; 6798 case CMD_CLEAR_BLACKLIST: 6799 s = "CMD_CLEAR_BLACKLIST"; 6800 break; 6801 case CMD_SAVE_CONFIG: 6802 s = "CMD_SAVE_CONFIG"; 6803 break; 6804 case CMD_GET_CONFIGURED_NETWORKS: 6805 s = "CMD_GET_CONFIGURED_NETWORKS"; 6806 break; 6807 case CMD_GET_SUPPORTED_FEATURES: 6808 s = "CMD_GET_SUPPORTED_FEATURES"; 6809 break; 6810 case CMD_UNWANTED_NETWORK: 6811 s = "CMD_UNWANTED_NETWORK"; 6812 break; 6813 case CMD_NETWORK_STATUS: 6814 s = "CMD_NETWORK_STATUS"; 6815 break; 6816 case CMD_GET_LINK_LAYER_STATS: 6817 s = "CMD_GET_LINK_LAYER_STATS"; 6818 break; 6819 case CMD_GET_MATCHING_CONFIG: 6820 s = "CMD_GET_MATCHING_CONFIG"; 6821 break; 6822 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6823 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6824 break; 6825 case CMD_DISCONNECT: 6826 s = "CMD_DISCONNECT"; 6827 break; 6828 case CMD_RECONNECT: 6829 s = "CMD_RECONNECT"; 6830 break; 6831 case CMD_REASSOCIATE: 6832 s = "CMD_REASSOCIATE"; 6833 break; 6834 case CMD_GET_CONNECTION_STATISTICS: 6835 s = "CMD_GET_CONNECTION_STATISTICS"; 6836 break; 6837 case CMD_SET_HIGH_PERF_MODE: 6838 s = "CMD_SET_HIGH_PERF_MODE"; 6839 break; 6840 case CMD_SET_COUNTRY_CODE: 6841 s = "CMD_SET_COUNTRY_CODE"; 6842 break; 6843 case CMD_ENABLE_RSSI_POLL: 6844 s = "CMD_ENABLE_RSSI_POLL"; 6845 break; 6846 case CMD_RSSI_POLL: 6847 s = "CMD_RSSI_POLL"; 6848 break; 6849 case CMD_START_PACKET_FILTERING: 6850 s = "CMD_START_PACKET_FILTERING"; 6851 break; 6852 case CMD_STOP_PACKET_FILTERING: 6853 s = "CMD_STOP_PACKET_FILTERING"; 6854 break; 6855 case CMD_SET_SUSPEND_OPT_ENABLED: 6856 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6857 break; 6858 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6859 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6860 break; 6861 case CMD_UPDATE_LINKPROPERTIES: 6862 s = "CMD_UPDATE_LINKPROPERTIES"; 6863 break; 6864 case CMD_RELOAD_TLS_AND_RECONNECT: 6865 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6866 break; 6867 case WifiManager.CONNECT_NETWORK: 6868 s = "CONNECT_NETWORK"; 6869 break; 6870 case WifiManager.SAVE_NETWORK: 6871 s = "SAVE_NETWORK"; 6872 break; 6873 case WifiManager.FORGET_NETWORK: 6874 s = "FORGET_NETWORK"; 6875 break; 6876 case WifiMonitor.SUP_CONNECTION_EVENT: 6877 s = "SUP_CONNECTION_EVENT"; 6878 break; 6879 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6880 s = "SUP_DISCONNECTION_EVENT"; 6881 break; 6882 case WifiMonitor.SCAN_RESULTS_EVENT: 6883 s = "SCAN_RESULTS_EVENT"; 6884 break; 6885 case WifiMonitor.SCAN_FAILED_EVENT: 6886 s = "SCAN_FAILED_EVENT"; 6887 break; 6888 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6889 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6890 break; 6891 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6892 s = "AUTHENTICATION_FAILURE_EVENT"; 6893 break; 6894 case WifiMonitor.SSID_TEMP_DISABLED: 6895 s = "SSID_TEMP_DISABLED"; 6896 break; 6897 case WifiMonitor.SSID_REENABLED: 6898 s = "SSID_REENABLED"; 6899 break; 6900 case WifiMonitor.WPS_SUCCESS_EVENT: 6901 s = "WPS_SUCCESS_EVENT"; 6902 break; 6903 case WifiMonitor.WPS_FAIL_EVENT: 6904 s = "WPS_FAIL_EVENT"; 6905 break; 6906 case WifiMonitor.SUP_REQUEST_IDENTITY: 6907 s = "SUP_REQUEST_IDENTITY"; 6908 break; 6909 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6910 s = "NETWORK_CONNECTION_EVENT"; 6911 break; 6912 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6913 s = "NETWORK_DISCONNECTION_EVENT"; 6914 break; 6915 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6916 s = "ASSOCIATION_REJECTION_EVENT"; 6917 break; 6918 case WifiMonitor.ANQP_DONE_EVENT: 6919 s = "WifiMonitor.ANQP_DONE_EVENT"; 6920 break; 6921 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6922 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6923 break; 6924 case WifiMonitor.HS20_DEAUTH_EVENT: 6925 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6926 break; 6927 case WifiMonitor.GAS_QUERY_START_EVENT: 6928 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6929 break; 6930 case CMD_SET_OPERATIONAL_MODE: 6931 s = "CMD_SET_OPERATIONAL_MODE"; 6932 break; 6933 case CMD_START_SCAN: 6934 s = "CMD_START_SCAN"; 6935 break; 6936 case CMD_DISABLE_P2P_RSP: 6937 s = "CMD_DISABLE_P2P_RSP"; 6938 break; 6939 case CMD_DISABLE_P2P_REQ: 6940 s = "CMD_DISABLE_P2P_REQ"; 6941 break; 6942 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6943 s = "GOOD_LINK_DETECTED"; 6944 break; 6945 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6946 s = "POOR_LINK_DETECTED"; 6947 break; 6948 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6949 s = "GROUP_CREATING_TIMED_OUT"; 6950 break; 6951 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6952 s = "P2P_CONNECTION_CHANGED"; 6953 break; 6954 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6955 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6956 break; 6957 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6958 s = "P2P.SET_MIRACAST_MODE"; 6959 break; 6960 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6961 s = "P2P.BLOCK_DISCOVERY"; 6962 break; 6963 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6964 s = "P2P.SET_COUNTRY_CODE"; 6965 break; 6966 case WifiManager.CANCEL_WPS: 6967 s = "CANCEL_WPS"; 6968 break; 6969 case WifiManager.CANCEL_WPS_FAILED: 6970 s = "CANCEL_WPS_FAILED"; 6971 break; 6972 case WifiManager.CANCEL_WPS_SUCCEDED: 6973 s = "CANCEL_WPS_SUCCEDED"; 6974 break; 6975 case WifiManager.START_WPS: 6976 s = "START_WPS"; 6977 break; 6978 case WifiManager.START_WPS_SUCCEEDED: 6979 s = "START_WPS_SUCCEEDED"; 6980 break; 6981 case WifiManager.WPS_FAILED: 6982 s = "WPS_FAILED"; 6983 break; 6984 case WifiManager.WPS_COMPLETED: 6985 s = "WPS_COMPLETED"; 6986 break; 6987 case WifiManager.RSSI_PKTCNT_FETCH: 6988 s = "RSSI_PKTCNT_FETCH"; 6989 break; 6990 case CMD_IP_CONFIGURATION_LOST: 6991 s = "CMD_IP_CONFIGURATION_LOST"; 6992 break; 6993 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6994 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6995 break; 6996 case CMD_IP_REACHABILITY_LOST: 6997 s = "CMD_IP_REACHABILITY_LOST"; 6998 break; 6999 case CMD_STATIC_IP_SUCCESS: 7000 s = "CMD_STATIC_IP_SUCCESSFUL"; 7001 break; 7002 case CMD_STATIC_IP_FAILURE: 7003 s = "CMD_STATIC_IP_FAILURE"; 7004 break; 7005 case DhcpStateMachine.DHCP_SUCCESS: 7006 s = "DHCP_SUCCESS"; 7007 break; 7008 case DhcpStateMachine.DHCP_FAILURE: 7009 s = "DHCP_FAILURE"; 7010 break; 7011 case CMD_TARGET_BSSID: 7012 s = "CMD_TARGET_BSSID"; 7013 break; 7014 case CMD_ASSOCIATED_BSSID: 7015 s = "CMD_ASSOCIATED_BSSID"; 7016 break; 7017 case CMD_REMOVE_APP_CONFIGURATIONS: 7018 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 7019 break; 7020 case CMD_REMOVE_USER_CONFIGURATIONS: 7021 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 7022 break; 7023 case CMD_ROAM_WATCHDOG_TIMER: 7024 s = "CMD_ROAM_WATCHDOG_TIMER"; 7025 break; 7026 case CMD_SCREEN_STATE_CHANGED: 7027 s = "CMD_SCREEN_STATE_CHANGED"; 7028 break; 7029 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7030 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 7031 break; 7032 case CMD_RESTART_AUTOJOIN_OFFLOAD: 7033 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 7034 break; 7035 case CMD_STARTED_PNO_DBG: 7036 s = "CMD_STARTED_PNO_DBG"; 7037 break; 7038 case CMD_STARTED_GSCAN_DBG: 7039 s = "CMD_STARTED_GSCAN_DBG"; 7040 break; 7041 case CMD_PNO_NETWORK_FOUND: 7042 s = "CMD_PNO_NETWORK_FOUND"; 7043 break; 7044 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 7045 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 7046 break; 7047 case CMD_START_IP_PACKET_OFFLOAD: 7048 s = "CMD_START_IP_PACKET_OFFLOAD"; 7049 break; 7050 case CMD_STOP_IP_PACKET_OFFLOAD: 7051 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 7052 break; 7053 case CMD_START_RSSI_MONITORING_OFFLOAD: 7054 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 7055 break; 7056 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 7057 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 7058 break; 7059 case CMD_RSSI_THRESHOLD_BREACH: 7060 s = "CMD_RSSI_THRESHOLD_BREACH"; 7061 break; 7062 default: 7063 s = "what:" + Integer.toString(what); 7064 break; 7065 } 7066 return s; 7067 } 7068 7069 void registerConnected() { 7070 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7071 long now_ms = System.currentTimeMillis(); 7072 // We are switching away from this configuration, 7073 // hence record the time we were connected last 7074 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7075 if (config != null) { 7076 config.lastConnected = System.currentTimeMillis(); 7077 config.autoJoinBailedDueToLowRssi = false; 7078 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 7079 config.numConnectionFailures = 0; 7080 config.numIpConfigFailures = 0; 7081 config.numAuthFailures = 0; 7082 config.numAssociation++; 7083 } 7084 mBadLinkspeedcount = 0; 7085 } 7086 } 7087 7088 void registerDisconnected() { 7089 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7090 long now_ms = System.currentTimeMillis(); 7091 // We are switching away from this configuration, 7092 // hence record the time we were connected last 7093 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7094 if (config != null) { 7095 config.lastDisconnected = System.currentTimeMillis(); 7096 if (config.ephemeral) { 7097 // Remove ephemeral WifiConfigurations from file 7098 mWifiConfigStore.forgetNetwork(mLastNetworkId); 7099 } 7100 } 7101 } 7102 } 7103 7104 void noteWifiDisabledWhileAssociated() { 7105 // We got disabled by user while we were associated, make note of it 7106 int rssi = mWifiInfo.getRssi(); 7107 WifiConfiguration config = getCurrentWifiConfiguration(); 7108 if (getCurrentState() == mConnectedState 7109 && rssi != WifiInfo.INVALID_RSSI 7110 && config != null) { 7111 boolean is24GHz = mWifiInfo.is24GHz(); 7112 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 7113 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 7114 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 7115 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 7116 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 7117 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 7118 if (isBadRSSI) { 7119 // Take note that we got disabled while RSSI was Bad 7120 config.numUserTriggeredWifiDisableLowRSSI++; 7121 } else if (isLowRSSI) { 7122 // Take note that we got disabled while RSSI was Low 7123 config.numUserTriggeredWifiDisableBadRSSI++; 7124 } else if (!isHighRSSI) { 7125 // Take note that we got disabled while RSSI was Not high 7126 config.numUserTriggeredWifiDisableNotHighRSSI++; 7127 } 7128 } 7129 } 7130 7131 WifiConfiguration getCurrentWifiConfiguration() { 7132 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 7133 return null; 7134 } 7135 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7136 } 7137 7138 ScanResult getCurrentScanResult() { 7139 WifiConfiguration config = getCurrentWifiConfiguration(); 7140 if (config == null) { 7141 return null; 7142 } 7143 String BSSID = mWifiInfo.getBSSID(); 7144 if (BSSID == null) { 7145 BSSID = mTargetRoamBSSID; 7146 } 7147 ScanDetailCache scanDetailCache = 7148 mWifiConfigStore.getScanDetailCache(config); 7149 7150 if (scanDetailCache == null) { 7151 return null; 7152 } 7153 7154 return scanDetailCache.get(BSSID); 7155 } 7156 7157 String getCurrentBSSID() { 7158 if (linkDebouncing) { 7159 return null; 7160 } 7161 return mLastBssid; 7162 } 7163 7164 class ConnectModeState extends State { 7165 7166 @Override 7167 public void enter() { 7168 connectScanningService(); 7169 } 7170 7171 @Override 7172 public boolean processMessage(Message message) { 7173 WifiConfiguration config; 7174 int netId; 7175 boolean ok; 7176 boolean didDisconnect; 7177 String bssid; 7178 String ssid; 7179 NetworkUpdateResult result; 7180 logStateAndMessage(message, getClass().getSimpleName()); 7181 7182 switch (message.what) { 7183 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7184 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 7185 didBlackListBSSID = false; 7186 bssid = (String) message.obj; 7187 if (bssid == null || TextUtils.isEmpty(bssid)) { 7188 // If BSSID is null, use the target roam BSSID 7189 bssid = mTargetRoamBSSID; 7190 } 7191 if (bssid != null) { 7192 // If we have a BSSID, tell configStore to black list it 7193 synchronized(mScanResultCache) { 7194 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 7195 (mLastNetworkId, bssid, false); 7196 } 7197 } 7198 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 7199 break; 7200 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7201 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 7202 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 7203 break; 7204 case WifiMonitor.SSID_TEMP_DISABLED: 7205 case WifiMonitor.SSID_REENABLED: 7206 String substr = (String) message.obj; 7207 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 7208 "temp-disabled" : "re-enabled"; 7209 logd("ConnectModeState SSID state=" + en + " nid=" 7210 + Integer.toString(message.arg1) + " [" + substr + "]"); 7211 synchronized(mScanResultCache) { 7212 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 7213 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 7214 } 7215 break; 7216 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7217 SupplicantState state = handleSupplicantStateChange(message); 7218 // A driver/firmware hang can now put the interface in a down state. 7219 // We detect the interface going down and recover from it 7220 if (!SupplicantState.isDriverActive(state)) { 7221 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7222 handleNetworkDisconnect(); 7223 } 7224 log("Detected an interface down, restart driver"); 7225 transitionTo(mDriverStoppedState); 7226 sendMessage(CMD_START_DRIVER); 7227 break; 7228 } 7229 7230 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7231 // when authentication times out after a successful connection, 7232 // we can figure this from the supplicant state. If supplicant 7233 // state is DISCONNECTED, but the mNetworkInfo says we are not 7234 // disconnected, we need to handle a disconnection 7235 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7236 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7237 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7238 handleNetworkDisconnect(); 7239 transitionTo(mDisconnectedState); 7240 } 7241 7242 // If we have COMPLETED a connection to a BSSID, start doing 7243 // DNAv4/DNAv6 -style probing for on-link neighbors of 7244 // interest (e.g. routers); harmless if none are configured. 7245 if (state == SupplicantState.COMPLETED) { 7246 if (mIpReachabilityMonitor != null) { 7247 mIpReachabilityMonitor.probeAll(); 7248 } 7249 } 7250 break; 7251 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7252 if (message.arg1 == 1) { 7253 mWifiNative.disconnect(); 7254 mTemporarilyDisconnectWifi = true; 7255 } else { 7256 mWifiNative.reconnect(); 7257 mTemporarilyDisconnectWifi = false; 7258 } 7259 break; 7260 case CMD_ADD_OR_UPDATE_NETWORK: 7261 config = (WifiConfiguration) message.obj; 7262 7263 if (!recordUidIfAuthorized(config, message.sendingUid, 7264 /* onlyAnnotate */ false)) { 7265 logw("Not authorized to update network " 7266 + " config=" + config.SSID 7267 + " cnid=" + config.networkId 7268 + " uid=" + message.sendingUid); 7269 replyToMessage(message, message.what, FAILURE); 7270 break; 7271 } 7272 7273 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7274 if (res < 0) { 7275 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7276 } else { 7277 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7278 if (curConfig != null && config != null) { 7279 if (curConfig.priority < config.priority 7280 && config.status == WifiConfiguration.Status.ENABLED) { 7281 // Interpret this as a connect attempt 7282 // Set the last selected configuration so as to allow the system to 7283 // stick the last user choice without persisting the choice 7284 mWifiConfigStore.setLastSelectedConfiguration(res); 7285 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7286 mWifiConfigStore.writeKnownNetworkHistory(false); 7287 7288 // Remember time of last connection attempt 7289 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7290 7291 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7292 7293 // As a courtesy to the caller, trigger a scan now 7294 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7295 } 7296 } 7297 } 7298 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7299 break; 7300 case CMD_REMOVE_NETWORK: 7301 netId = message.arg1; 7302 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7303 /* onlyAnnotate */ false)) { 7304 logw("Not authorized to remove network " 7305 + " cnid=" + netId 7306 + " uid=" + message.sendingUid); 7307 replyToMessage(message, message.what, FAILURE); 7308 break; 7309 } 7310 7311 ok = mWifiConfigStore.removeNetwork(message.arg1); 7312 if (!ok) { 7313 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7314 } 7315 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7316 break; 7317 case CMD_ENABLE_NETWORK: 7318 boolean disableOthers = message.arg2 == 1; 7319 netId = message.arg1; 7320 config = mWifiConfigStore.getWifiConfiguration(netId); 7321 if (config == null) { 7322 loge("No network with id = " + netId); 7323 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7324 break; 7325 } 7326 7327 // Tell autojoin the user did try to select to that network 7328 // However, do NOT persist the choice by bumping the priority of the network 7329 if (disableOthers) { 7330 mWifiAutoJoinController. 7331 updateConfigurationHistory(netId, true, false); 7332 // Set the last selected configuration so as to allow the system to 7333 // stick the last user choice without persisting the choice 7334 mWifiConfigStore.setLastSelectedConfiguration(netId); 7335 7336 // Remember time of last connection attempt 7337 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7338 7339 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7340 } 7341 // Cancel auto roam requests 7342 autoRoamSetBSSID(netId, "any"); 7343 7344 int uid = message.sendingUid; 7345 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7346 if (!ok) { 7347 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7348 } 7349 7350 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7351 break; 7352 case CMD_ENABLE_ALL_NETWORKS: 7353 long time = android.os.SystemClock.elapsedRealtime(); 7354 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7355 mWifiConfigStore.enableAllNetworks(); 7356 mLastEnableAllNetworksTime = time; 7357 } 7358 break; 7359 case WifiManager.DISABLE_NETWORK: 7360 if (mWifiConfigStore.disableNetwork(message.arg1, 7361 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7362 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7363 } else { 7364 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7365 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7366 WifiManager.ERROR); 7367 } 7368 break; 7369 case CMD_DISABLE_EPHEMERAL_NETWORK: 7370 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7371 if (config != null) { 7372 if (config.networkId == mLastNetworkId) { 7373 // Disconnect and let autojoin reselect a new network 7374 sendMessage(CMD_DISCONNECT); 7375 } 7376 } 7377 break; 7378 case CMD_BLACKLIST_NETWORK: 7379 mWifiConfigStore.blackListBssid((String) message.obj); 7380 break; 7381 case CMD_CLEAR_BLACKLIST: 7382 mWifiConfigStore.clearBssidBlacklist(); 7383 break; 7384 case CMD_SAVE_CONFIG: 7385 ok = mWifiConfigStore.saveConfig(); 7386 7387 if (DBG) logd("did save config " + ok); 7388 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7389 7390 // Inform the backup manager about a data change 7391 IBackupManager ibm = IBackupManager.Stub.asInterface( 7392 ServiceManager.getService(Context.BACKUP_SERVICE)); 7393 if (ibm != null) { 7394 try { 7395 ibm.dataChanged("com.android.providers.settings"); 7396 } catch (Exception e) { 7397 // Try again later 7398 } 7399 } 7400 break; 7401 case CMD_GET_CONFIGURED_NETWORKS: 7402 replyToMessage(message, message.what, 7403 mWifiConfigStore.getConfiguredNetworks()); 7404 break; 7405 case WifiMonitor.SUP_REQUEST_IDENTITY: 7406 int networkId = message.arg2; 7407 boolean identitySent = false; 7408 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7409 7410 if (targetWificonfiguration != null 7411 && targetWificonfiguration.enterpriseConfig != null) { 7412 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7413 } 7414 7415 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7416 if (targetWificonfiguration != null 7417 && targetWificonfiguration.networkId == networkId 7418 && targetWificonfiguration.allowedKeyManagement 7419 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7420 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7421 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7422 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7423 TelephonyManager tm = (TelephonyManager) 7424 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7425 if (tm != null) { 7426 String imsi = tm.getSubscriberId(); 7427 String mccMnc = ""; 7428 7429 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7430 mccMnc = tm.getSimOperator(); 7431 7432 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7433 7434 if (!identity.isEmpty()) { 7435 mWifiNative.simIdentityResponse(networkId, identity); 7436 identitySent = true; 7437 } 7438 } 7439 } 7440 if (!identitySent) { 7441 // Supplicant lacks credentials to connect to that network, hence black list 7442 ssid = (String) message.obj; 7443 if (targetWificonfiguration != null && ssid != null 7444 && targetWificonfiguration.SSID != null 7445 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7446 mWifiConfigStore.handleSSIDStateChange( 7447 targetWificonfiguration.networkId, false, 7448 "AUTH_FAILED no identity", null); 7449 } 7450 // Disconnect now, as we don't have any way to fullfill 7451 // the supplicant request. 7452 mWifiConfigStore.setLastSelectedConfiguration( 7453 WifiConfiguration.INVALID_NETWORK_ID); 7454 mWifiNative.disconnect(); 7455 } 7456 break; 7457 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7458 logd("Received SUP_REQUEST_SIM_AUTH"); 7459 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7460 if (requestData != null) { 7461 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7462 handleGsmAuthRequest(requestData); 7463 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7464 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7465 handle3GAuthRequest(requestData); 7466 } 7467 } else { 7468 loge("Invalid sim auth request"); 7469 } 7470 break; 7471 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7472 replyToMessage(message, message.what, 7473 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7474 break; 7475 case CMD_GET_MATCHING_CONFIG: 7476 replyToMessage(message, message.what, 7477 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7478 break; 7479 /* Do a redundant disconnect without transition */ 7480 case CMD_DISCONNECT: 7481 mWifiConfigStore.setLastSelectedConfiguration 7482 (WifiConfiguration.INVALID_NETWORK_ID); 7483 mWifiNative.disconnect(); 7484 break; 7485 case CMD_RECONNECT: 7486 mWifiAutoJoinController.attemptAutoJoin(); 7487 break; 7488 case CMD_REASSOCIATE: 7489 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7490 mWifiNative.reassociate(); 7491 break; 7492 case CMD_RELOAD_TLS_AND_RECONNECT: 7493 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7494 logd("Reconnecting to give a chance to un-connected TLS networks"); 7495 mWifiNative.disconnect(); 7496 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7497 mWifiNative.reconnect(); 7498 } 7499 break; 7500 case CMD_AUTO_ROAM: 7501 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7502 return HANDLED; 7503 case CMD_AUTO_CONNECT: 7504 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7505 * associated status to the STATUS command but somehow-someplace still thinks 7506 * it is associated and thus will ignore select/reconnect command with 7507 * following message: 7508 * "Already associated with the selected network - do nothing" 7509 * 7510 * Hence, sends a disconnect to supplicant first. 7511 */ 7512 didDisconnect = false; 7513 if (getCurrentState() != mDisconnectedState) { 7514 /** Supplicant will ignore the reconnect if we are currently associated, 7515 * hence trigger a disconnect 7516 */ 7517 didDisconnect = true; 7518 mWifiNative.disconnect(); 7519 } 7520 7521 /* connect command coming from auto-join */ 7522 config = (WifiConfiguration) message.obj; 7523 netId = message.arg1; 7524 int roam = message.arg2; 7525 logd("CMD_AUTO_CONNECT sup state " 7526 + mSupplicantStateTracker.getSupplicantStateName() 7527 + " my state " + getCurrentState().getName() 7528 + " nid=" + Integer.toString(netId) 7529 + " roam=" + Integer.toString(roam)); 7530 if (config == null) { 7531 loge("AUTO_CONNECT and no config, bail out..."); 7532 break; 7533 } 7534 7535 /* Make sure we cancel any previous roam request */ 7536 autoRoamSetBSSID(netId, config.BSSID); 7537 7538 /* Save the network config */ 7539 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7540 + " nid=" + Integer.toString(netId)); 7541 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7542 netId = result.getNetworkId(); 7543 logd("CMD_AUTO_CONNECT did save config -> " 7544 + " nid=" + Integer.toString(netId)); 7545 7546 // Since we updated the config,read it back from config store: 7547 config = mWifiConfigStore.getWifiConfiguration(netId); 7548 if (config == null) { 7549 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7550 break; 7551 } 7552 if (netId != config.networkId) { 7553 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7554 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7555 break; 7556 } 7557 7558 if (deferForUserInput(message, netId, false)) { 7559 break; 7560 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7561 WifiConfiguration.USER_BANNED) { 7562 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7563 WifiManager.NOT_AUTHORIZED); 7564 break; 7565 } 7566 7567 // Make sure the network is enabled, since supplicant will not reenable it 7568 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7569 7570 // If we're autojoining a network that the user or an app explicitly selected, 7571 // keep track of the UID that selected it. 7572 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7573 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7574 7575 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7576 lastConnectUid) && mWifiNative.reconnect()) { 7577 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7578 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7579 config = mWifiConfigStore.getWifiConfiguration(netId); 7580 if (config != null 7581 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7582 // If we autojoined a different config than the user selected one, 7583 // it means we could not see the last user selection, 7584 // or that the last user selection was faulty and ended up blacklisted 7585 // for some reason (in which case the user is notified with an error 7586 // message in the Wifi picker), and thus we managed to auto-join away 7587 // from the selected config. -> in that case we need to forget 7588 // the selection because we don't want to abruptly switch back to it. 7589 // 7590 // Note that the user selection is also forgotten after a period of time 7591 // during which the device has been disconnected. 7592 // The default value is 30 minutes : see the code path at bottom of 7593 // setScanResults() function. 7594 mWifiConfigStore. 7595 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7596 } 7597 mAutoRoaming = roam; 7598 if (isRoaming() || linkDebouncing) { 7599 transitionTo(mRoamingState); 7600 } else if (didDisconnect) { 7601 transitionTo(mDisconnectingState); 7602 } else { 7603 /* Already in disconnected state, nothing to change */ 7604 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7605 int delay = 60 * 1000; 7606 if (VDBG) { 7607 logd("Starting PNO alarm: " + delay); 7608 } 7609 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7610 System.currentTimeMillis() + delay, 7611 mPnoIntent); 7612 } 7613 mRestartAutoJoinOffloadCounter++; 7614 } 7615 } else { 7616 loge("Failed to connect config: " + config + " netId: " + netId); 7617 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7618 WifiManager.ERROR); 7619 break; 7620 } 7621 break; 7622 case CMD_REMOVE_APP_CONFIGURATIONS: 7623 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7624 break; 7625 case CMD_REMOVE_USER_CONFIGURATIONS: 7626 mWifiConfigStore.removeNetworksForUser(message.arg1); 7627 break; 7628 case WifiManager.CONNECT_NETWORK: 7629 /** 7630 * The connect message can contain a network id passed as arg1 on message or 7631 * or a config passed as obj on message. 7632 * For a new network, a config is passed to create and connect. 7633 * For an existing network, a network id is passed 7634 */ 7635 netId = message.arg1; 7636 config = (WifiConfiguration) message.obj; 7637 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7638 boolean updatedExisting = false; 7639 7640 /* Save the network config */ 7641 if (config != null) { 7642 // When connecting to an access point, WifiStateMachine wants to update the 7643 // relevant config with administrative data. This update should not be 7644 // considered a 'real' update, therefore lockdown by Device Owner must be 7645 // disregarded. 7646 if (!recordUidIfAuthorized(config, message.sendingUid, 7647 /* onlyAnnotate */ true)) { 7648 logw("Not authorized to update network " 7649 + " config=" + config.SSID 7650 + " cnid=" + config.networkId 7651 + " uid=" + message.sendingUid); 7652 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7653 WifiManager.NOT_AUTHORIZED); 7654 break; 7655 } 7656 7657 String configKey = config.configKey(true /* allowCached */); 7658 WifiConfiguration savedConfig = 7659 mWifiConfigStore.getWifiConfiguration(configKey); 7660 if (savedConfig != null) { 7661 // There is an existing config with this netId, but it wasn't exposed 7662 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7663 // getConfiguredNetworks). Remove those bits and update the config. 7664 config = savedConfig; 7665 logd("CONNECT_NETWORK updating existing config with id=" + 7666 config.networkId + " configKey=" + configKey); 7667 config.ephemeral = false; 7668 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7669 updatedExisting = true; 7670 } 7671 7672 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7673 netId = result.getNetworkId(); 7674 } 7675 config = mWifiConfigStore.getWifiConfiguration(netId); 7676 7677 if (config == null) { 7678 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7679 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7680 + getCurrentState().getName()); 7681 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7682 WifiManager.ERROR); 7683 break; 7684 } else { 7685 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7686 logd("CONNECT_NETWORK id=" + Integer.toString(netId) 7687 + " config=" + config.SSID 7688 + " cnid=" + config.networkId 7689 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7690 + " my state " + getCurrentState().getName() 7691 + " uid = " + message.sendingUid 7692 + wasSkipped); 7693 } 7694 7695 autoRoamSetBSSID(netId, "any"); 7696 7697 if (message.sendingUid == Process.WIFI_UID 7698 || message.sendingUid == Process.SYSTEM_UID) { 7699 // As a sanity measure, clear the BSSID in the supplicant network block. 7700 // If system or Wifi Settings want to connect, they will not 7701 // specify the BSSID. 7702 // If an app however had added a BSSID to this configuration, and the BSSID 7703 // was wrong, Then we would forever fail to connect until that BSSID 7704 // is cleaned up. 7705 clearConfigBSSID(config, "CONNECT_NETWORK"); 7706 } 7707 7708 if (deferForUserInput(message, netId, true)) { 7709 break; 7710 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7711 WifiConfiguration.USER_BANNED) { 7712 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7713 WifiManager.NOT_AUTHORIZED); 7714 break; 7715 } 7716 7717 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7718 7719 /* Tell autojoin the user did try to connect to that network if from settings */ 7720 boolean persist = 7721 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7722 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7723 7724 mWifiConfigStore.setLastSelectedConfiguration(netId); 7725 7726 didDisconnect = false; 7727 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7728 && mLastNetworkId != netId) { 7729 /** Supplicant will ignore the reconnect if we are currently associated, 7730 * hence trigger a disconnect 7731 */ 7732 didDisconnect = true; 7733 mWifiNative.disconnect(); 7734 } 7735 7736 // Make sure the network is enabled, since supplicant will not reenable it 7737 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7738 7739 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7740 message.sendingUid) && mWifiNative.reconnect()) { 7741 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7742 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7743 7744 /* The state tracker handles enabling networks upon completion/failure */ 7745 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7746 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7747 if (didDisconnect) { 7748 /* Expect a disconnection from the old connection */ 7749 transitionTo(mDisconnectingState); 7750 } else if (updatedExisting && getCurrentState() == mConnectedState && 7751 getCurrentWifiConfiguration().networkId == netId) { 7752 // Update the current set of network capabilities, but stay in the 7753 // current state. 7754 updateCapabilities(config); 7755 } else { 7756 /** 7757 * Directly go to disconnected state where we 7758 * process the connection events from supplicant 7759 **/ 7760 transitionTo(mDisconnectedState); 7761 } 7762 } else { 7763 loge("Failed to connect config: " + config + " netId: " + netId); 7764 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7765 WifiManager.ERROR); 7766 break; 7767 } 7768 break; 7769 case WifiManager.SAVE_NETWORK: 7770 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7771 // Fall thru 7772 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7773 lastSavedConfigurationAttempt = null; // Used for debug 7774 config = (WifiConfiguration) message.obj; 7775 if (config == null) { 7776 loge("ERROR: SAVE_NETWORK with null configuration" 7777 + mSupplicantStateTracker.getSupplicantStateName() 7778 + " my state " + getCurrentState().getName()); 7779 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7780 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7781 WifiManager.ERROR); 7782 break; 7783 } 7784 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7785 int nid = config.networkId; 7786 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7787 + " config=" + config.SSID 7788 + " nid=" + config.networkId 7789 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7790 + " my state " + getCurrentState().getName()); 7791 7792 // Only record the uid if this is user initiated 7793 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7794 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7795 /* onlyAnnotate */ false)) { 7796 logw("Not authorized to update network " 7797 + " config=" + config.SSID 7798 + " cnid=" + config.networkId 7799 + " uid=" + message.sendingUid); 7800 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7801 WifiManager.NOT_AUTHORIZED); 7802 break; 7803 } 7804 7805 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7806 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7807 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7808 if (result.hasIpChanged()) { 7809 // The currently connection configuration was changed 7810 // We switched from DHCP to static or from static to DHCP, or the 7811 // static IP address has changed. 7812 log("Reconfiguring IP on connection"); 7813 // TODO: clear addresses and disable IPv6 7814 // to simplify obtainingIpState. 7815 transitionTo(mObtainingIpState); 7816 } 7817 if (result.hasProxyChanged()) { 7818 log("Reconfiguring proxy on connection"); 7819 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7820 } 7821 } 7822 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7823 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7824 7825 if (VDBG) { 7826 logd("Success save network nid=" 7827 + Integer.toString(result.getNetworkId())); 7828 } 7829 7830 synchronized(mScanResultCache) { 7831 /** 7832 * If the command comes from WifiManager, then 7833 * tell autojoin the user did try to modify and save that network, 7834 * and interpret the SAVE_NETWORK as a request to connect 7835 */ 7836 boolean user = message.what == WifiManager.SAVE_NETWORK; 7837 7838 // Did this connect come from settings 7839 boolean persistConnect = 7840 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7841 7842 if (user) { 7843 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7844 mWifiConfigStore.writeKnownNetworkHistory(false); 7845 } 7846 7847 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7848 , user, persistConnect); 7849 mWifiAutoJoinController.attemptAutoJoin(); 7850 } 7851 } else { 7852 loge("Failed to save network"); 7853 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7854 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7855 WifiManager.ERROR); 7856 } 7857 break; 7858 case WifiManager.FORGET_NETWORK: 7859 // Debug only, remember last configuration that was forgotten 7860 WifiConfiguration toRemove 7861 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7862 if (toRemove == null) { 7863 lastForgetConfigurationAttempt = null; 7864 } else { 7865 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7866 } 7867 // check that the caller owns this network 7868 netId = message.arg1; 7869 7870 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7871 /* onlyAnnotate */ false)) { 7872 logw("Not authorized to forget network " 7873 + " cnid=" + netId 7874 + " uid=" + message.sendingUid); 7875 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7876 WifiManager.NOT_AUTHORIZED); 7877 break; 7878 } 7879 7880 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7881 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7882 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7883 (WifiConfiguration) message.obj); 7884 } else { 7885 loge("Failed to forget network"); 7886 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7887 WifiManager.ERROR); 7888 } 7889 break; 7890 case WifiManager.START_WPS: 7891 WpsInfo wpsInfo = (WpsInfo) message.obj; 7892 WpsResult wpsResult; 7893 switch (wpsInfo.setup) { 7894 case WpsInfo.PBC: 7895 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7896 break; 7897 case WpsInfo.KEYPAD: 7898 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7899 break; 7900 case WpsInfo.DISPLAY: 7901 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7902 break; 7903 default: 7904 wpsResult = new WpsResult(Status.FAILURE); 7905 loge("Invalid setup for WPS"); 7906 break; 7907 } 7908 mWifiConfigStore.setLastSelectedConfiguration 7909 (WifiConfiguration.INVALID_NETWORK_ID); 7910 if (wpsResult.status == Status.SUCCESS) { 7911 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7912 transitionTo(mWpsRunningState); 7913 } else { 7914 loge("Failed to start WPS with config " + wpsInfo.toString()); 7915 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7916 } 7917 break; 7918 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7919 if (DBG) log("Network connection established"); 7920 mLastNetworkId = message.arg1; 7921 mLastBssid = (String) message.obj; 7922 7923 mWifiInfo.setBSSID(mLastBssid); 7924 mWifiInfo.setNetworkId(mLastNetworkId); 7925 7926 sendNetworkStateChangeBroadcast(mLastBssid); 7927 transitionTo(mObtainingIpState); 7928 break; 7929 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7930 // Calling handleNetworkDisconnect here is redundant because we might already 7931 // have called it when leaving L2ConnectedState to go to disconnecting state 7932 // or thru other path 7933 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7934 // if they are valid, and only in this case call handleNEtworkDisconnect, 7935 // TODO: this should be fixed for a L MR release 7936 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7937 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7938 // at the chip etc... 7939 if (DBG) log("ConnectModeState: Network connection lost "); 7940 handleNetworkDisconnect(); 7941 transitionTo(mDisconnectedState); 7942 break; 7943 case CMD_PNO_NETWORK_FOUND: 7944 processPnoNetworkFound((ScanResult[])message.obj); 7945 break; 7946 default: 7947 return NOT_HANDLED; 7948 } 7949 return HANDLED; 7950 } 7951 } 7952 7953 private void updateCapabilities(WifiConfiguration config) { 7954 if (config != null) { 7955 if (config.ephemeral) { 7956 mNetworkCapabilities.removeCapability( 7957 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7958 } else { 7959 mNetworkCapabilities.addCapability( 7960 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7961 } 7962 } 7963 mNetworkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7964 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7965 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7966 } 7967 7968 private class WifiNetworkAgent extends NetworkAgent { 7969 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7970 NetworkCapabilities nc, LinkProperties lp, int score) { 7971 super(l, c, TAG, ni, nc, lp, score); 7972 } 7973 protected void unwanted() { 7974 // Ignore if we're not the current networkAgent. 7975 if (this != mNetworkAgent) return; 7976 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7977 + Integer.toString(mWifiInfo.score)); 7978 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7979 } 7980 7981 @Override 7982 protected void networkStatus(int status) { 7983 if (this != mNetworkAgent) return; 7984 if (status == NetworkAgent.INVALID_NETWORK) { 7985 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7986 + Integer.toString(mWifiInfo.score)); 7987 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7988 } else if (status == NetworkAgent.VALID_NETWORK) { 7989 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7990 + Integer.toString(mWifiInfo.score)); 7991 doNetworkStatus(status); 7992 } 7993 } 7994 7995 @Override 7996 protected void saveAcceptUnvalidated(boolean accept) { 7997 if (this != mNetworkAgent) return; 7998 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7999 } 8000 8001 @Override 8002 protected void startPacketKeepalive(Message msg) { 8003 WifiStateMachine.this.sendMessage( 8004 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 8005 } 8006 8007 @Override 8008 protected void stopPacketKeepalive(Message msg) { 8009 WifiStateMachine.this.sendMessage( 8010 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 8011 } 8012 8013 @Override 8014 protected void setSignalStrengthThresholds(int[] thresholds) { 8015 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 8016 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 8017 // MAX_VALUE at the start/end of the thresholds array if necessary. 8018 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 8019 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 8020 // re-arm the hardware event. This needs to be done on the state machine thread to 8021 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 8022 // sent in the NetworkCapabilities) must be the one received from the hardware event 8023 // received, or we might skip callbacks. 8024 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 8025 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 8026 if (thresholds.length == 0) { 8027 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8028 mWifiInfo.getRssi()); 8029 return; 8030 } 8031 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 8032 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 8033 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 8034 Arrays.sort(rssiVals); 8035 byte[] rssiRange = new byte[rssiVals.length]; 8036 for (int i = 0; i < rssiVals.length; i++) { 8037 int val = rssiVals[i]; 8038 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 8039 rssiRange[i] = (byte) val; 8040 } else { 8041 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 8042 + Arrays.toString(rssiVals)); 8043 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8044 mWifiInfo.getRssi()); 8045 return; 8046 } 8047 } 8048 // TODO: Do we quash rssi values in this sorted array which are very close? 8049 mRssiRanges = rssiRange; 8050 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 8051 mWifiInfo.getRssi()); 8052 } 8053 8054 @Override 8055 protected void preventAutomaticReconnect() { 8056 if (this != mNetworkAgent) return; 8057 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 8058 } 8059 } 8060 8061 void unwantedNetwork(int reason) { 8062 sendMessage(CMD_UNWANTED_NETWORK, reason); 8063 } 8064 8065 void doNetworkStatus(int status) { 8066 sendMessage(CMD_NETWORK_STATUS, status); 8067 } 8068 8069 // rfc4186 & rfc4187: 8070 // create Permanent Identity base on IMSI, 8071 // identity = usernam@realm 8072 // with username = prefix | IMSI 8073 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 8074 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 8075 String mcc; 8076 String mnc; 8077 String prefix; 8078 8079 if (imsi == null || imsi.isEmpty()) 8080 return ""; 8081 8082 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 8083 prefix = "1"; 8084 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 8085 prefix = "0"; 8086 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 8087 prefix = "6"; 8088 else // not a valide EapMethod 8089 return ""; 8090 8091 /* extract mcc & mnc from mccMnc */ 8092 if (mccMnc != null && !mccMnc.isEmpty()) { 8093 mcc = mccMnc.substring(0, 3); 8094 mnc = mccMnc.substring(3); 8095 if (mnc.length() == 2) 8096 mnc = "0" + mnc; 8097 } else { 8098 // extract mcc & mnc from IMSI, assume mnc size is 3 8099 mcc = imsi.substring(0, 3); 8100 mnc = imsi.substring(3, 6); 8101 } 8102 8103 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 8104 } 8105 8106 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 8107 if (config == null) 8108 return false; 8109 8110 // We are still seeing a fairly high power consumption triggered by autojoin scans 8111 // Hence do partial scans only for PSK configuration that are roamable since the 8112 // primary purpose of the partial scans is roaming. 8113 // Full badn scans with exponential backoff for the purpose or extended roaming and 8114 // network switching are performed unconditionally. 8115 ScanDetailCache scanDetailCache = 8116 mWifiConfigStore.getScanDetailCache(config); 8117 if (scanDetailCache == null 8118 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 8119 || scanDetailCache.size() > 6) { 8120 //return true but to not trigger the scan 8121 return true; 8122 } 8123 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 8124 ONE_HOUR_MILLI, restrictChannelList); 8125 if (channels != null && channels.size() != 0) { 8126 StringBuilder freqs = new StringBuilder(); 8127 boolean first = true; 8128 for (Integer channel : channels) { 8129 if (!first) 8130 freqs.append(","); 8131 freqs.append(channel.toString()); 8132 first = false; 8133 } 8134 //if (DBG) { 8135 logd("starting scan for " + config.configKey() + " with " + freqs); 8136 //} 8137 // Call wifi native to start the scan 8138 if (startScanNative( 8139 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 8140 freqs.toString())) { 8141 // Only count battery consumption if scan request is accepted 8142 noteScanStart(SCAN_ALARM_SOURCE, null); 8143 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8144 } else { 8145 // used for debug only, mark scan as failed 8146 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8147 } 8148 return true; 8149 } else { 8150 if (DBG) logd("no channels for " + config.configKey()); 8151 return false; 8152 } 8153 } 8154 8155 void clearCurrentConfigBSSID(String dbg) { 8156 // Clear the bssid in the current config's network block 8157 WifiConfiguration config = getCurrentWifiConfiguration(); 8158 if (config == null) 8159 return; 8160 clearConfigBSSID(config, dbg); 8161 } 8162 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8163 if (config == null) 8164 return; 8165 if (DBG) { 8166 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8167 + " config.bssid " + config.BSSID); 8168 } 8169 config.autoJoinBSSID = "any"; 8170 config.BSSID = "any"; 8171 if (DBG) { 8172 logd(dbg + " " + config.SSID 8173 + " nid=" + Integer.toString(config.networkId)); 8174 } 8175 mWifiConfigStore.saveWifiConfigBSSID(config); 8176 } 8177 8178 class L2ConnectedState extends State { 8179 @Override 8180 public void enter() { 8181 mRssiPollToken++; 8182 if (mEnableRssiPolling) { 8183 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8184 } 8185 if (mNetworkAgent != null) { 8186 loge("Have NetworkAgent when entering L2Connected"); 8187 setNetworkDetailedState(DetailedState.DISCONNECTED); 8188 } 8189 setNetworkDetailedState(DetailedState.CONNECTING); 8190 8191 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8192 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8193 } 8194 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8195 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8196 mLinkProperties, 60); 8197 8198 // We must clear the config BSSID, as the wifi chipset may decide to roam 8199 // from this point on and having the BSSID specified in the network block would 8200 // cause the roam to faile and the device to disconnect 8201 clearCurrentConfigBSSID("L2ConnectedState"); 8202 8203 try { 8204 mIpReachabilityMonitor = new IpReachabilityMonitor( 8205 mContext, 8206 mInterfaceName, 8207 new IpReachabilityMonitor.Callback() { 8208 @Override 8209 public void notifyLost(InetAddress ip, String logMsg) { 8210 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 8211 } 8212 }); 8213 } catch (IllegalArgumentException e) { 8214 Log.wtf("Failed to create IpReachabilityMonitor", e); 8215 } 8216 } 8217 8218 @Override 8219 public void exit() { 8220 if (mIpReachabilityMonitor != null) { 8221 mIpReachabilityMonitor.stop(); 8222 mIpReachabilityMonitor = null; 8223 } 8224 8225 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8226 // Bug: 15347363 8227 // For paranoia's sake, call handleNetworkDisconnect 8228 // only if BSSID is null or last networkId 8229 // is not invalid. 8230 if (DBG) { 8231 StringBuilder sb = new StringBuilder(); 8232 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8233 if (mLastBssid !=null) { 8234 sb.append(" ").append(mLastBssid); 8235 } 8236 } 8237 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8238 handleNetworkDisconnect(); 8239 } 8240 } 8241 8242 @Override 8243 public boolean processMessage(Message message) { 8244 logStateAndMessage(message, getClass().getSimpleName()); 8245 8246 switch (message.what) { 8247 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8248 handlePreDhcpSetup(); 8249 break; 8250 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8251 handlePostDhcpSetup(); 8252 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 8253 if (DBG) log("DHCP successful"); 8254 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 8255 // We advance to mConnectedState because handleIPv4Success will call 8256 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 8257 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 8258 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 8259 if (DBG) { 8260 int count = -1; 8261 WifiConfiguration config = getCurrentWifiConfiguration(); 8262 if (config != null) { 8263 count = config.numConnectionFailures; 8264 } 8265 log("DHCP failure count=" + count); 8266 } 8267 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 8268 // As above, we transition to mDisconnectingState via updateLinkProperties. 8269 } 8270 break; 8271 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8272 handleSuccessfulIpConfiguration(); 8273 sendConnectedState(); 8274 transitionTo(mConnectedState); 8275 break; 8276 case CMD_IP_CONFIGURATION_LOST: 8277 // Get Link layer stats so that we get fresh tx packet counters. 8278 getWifiLinkLayerStats(true); 8279 handleIpConfigurationLost(); 8280 transitionTo(mDisconnectingState); 8281 break; 8282 case CMD_IP_REACHABILITY_LOST: 8283 if (DBG && message.obj != null) log((String) message.obj); 8284 handleIpReachabilityLost(); 8285 transitionTo(mDisconnectingState); 8286 break; 8287 case CMD_DISCONNECT: 8288 mWifiNative.disconnect(); 8289 transitionTo(mDisconnectingState); 8290 break; 8291 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8292 if (message.arg1 == 1) { 8293 mWifiNative.disconnect(); 8294 mTemporarilyDisconnectWifi = true; 8295 transitionTo(mDisconnectingState); 8296 } 8297 break; 8298 case CMD_SET_OPERATIONAL_MODE: 8299 if (message.arg1 != CONNECT_MODE) { 8300 sendMessage(CMD_DISCONNECT); 8301 deferMessage(message); 8302 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8303 noteWifiDisabledWhileAssociated(); 8304 } 8305 } 8306 mWifiConfigStore. 8307 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8308 break; 8309 case CMD_SET_COUNTRY_CODE: 8310 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8311 deferMessage(message); 8312 break; 8313 case CMD_START_SCAN: 8314 if (DBG) { 8315 logd("CMD_START_SCAN source " + message.arg1 8316 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8317 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8318 + " targetRoamBSSID=" + mTargetRoamBSSID 8319 + " RSSI=" + mWifiInfo.getRssi()); 8320 } 8321 if (message.arg1 == SCAN_ALARM_SOURCE) { 8322 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8323 // not be processed) and restart the scan if neede 8324 if (!getEnableAutoJoinWhenAssociated()) { 8325 return HANDLED; 8326 } 8327 boolean shouldScan = mScreenOn; 8328 8329 if (!checkAndRestartDelayedScan(message.arg2, 8330 shouldScan, 8331 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8332 null, null)) { 8333 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8334 logd("L2Connected CMD_START_SCAN source " 8335 + message.arg1 8336 + " " + message.arg2 + ", " + mDelayedScanCounter 8337 + " -> obsolete"); 8338 return HANDLED; 8339 } 8340 if (mP2pConnected.get()) { 8341 logd("L2Connected CMD_START_SCAN source " 8342 + message.arg1 8343 + " " + message.arg2 + ", " + mDelayedScanCounter 8344 + " ignore because P2P is connected"); 8345 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8346 return HANDLED; 8347 } 8348 boolean tryFullBandScan = false; 8349 boolean restrictChannelList = false; 8350 long now_ms = System.currentTimeMillis(); 8351 if (DBG) { 8352 logd("CMD_START_SCAN with age=" 8353 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8354 + " interval=" + fullBandConnectedTimeIntervalMilli 8355 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8356 } 8357 if (mWifiInfo != null) { 8358 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8359 (now_ms - lastFullBandConnectedTimeMilli) 8360 > fullBandConnectedTimeIntervalMilli) { 8361 if (DBG) { 8362 logd("CMD_START_SCAN try full band scan age=" 8363 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8364 + " interval=" + fullBandConnectedTimeIntervalMilli 8365 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8366 } 8367 tryFullBandScan = true; 8368 } 8369 8370 if (mWifiInfo.txSuccessRate > 8371 mWifiConfigStore.maxTxPacketForFullScans 8372 || mWifiInfo.rxSuccessRate > 8373 mWifiConfigStore.maxRxPacketForFullScans) { 8374 // Too much traffic at the interface, hence no full band scan 8375 if (DBG) { 8376 logd("CMD_START_SCAN " + 8377 "prevent full band scan due to pkt rate"); 8378 } 8379 tryFullBandScan = false; 8380 } 8381 8382 if (mWifiInfo.txSuccessRate > 8383 mWifiConfigStore.maxTxPacketForPartialScans 8384 || mWifiInfo.rxSuccessRate > 8385 mWifiConfigStore.maxRxPacketForPartialScans) { 8386 // Don't scan if lots of packets are being sent 8387 restrictChannelList = true; 8388 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8389 if (DBG) { 8390 logd("CMD_START_SCAN source " + message.arg1 8391 + " ...and ignore scans" 8392 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8393 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8394 } 8395 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8396 return HANDLED; 8397 } 8398 } 8399 } 8400 8401 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8402 if (DBG) { 8403 logd("CMD_START_SCAN full=" + 8404 tryFullBandScan); 8405 } 8406 if (currentConfiguration != null) { 8407 if (fullBandConnectedTimeIntervalMilli 8408 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8409 // Sanity 8410 fullBandConnectedTimeIntervalMilli 8411 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8412 } 8413 if (tryFullBandScan) { 8414 lastFullBandConnectedTimeMilli = now_ms; 8415 if (fullBandConnectedTimeIntervalMilli 8416 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8417 // Increase the interval 8418 fullBandConnectedTimeIntervalMilli 8419 = fullBandConnectedTimeIntervalMilli 8420 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8421 8422 if (DBG) { 8423 logd("CMD_START_SCAN bump interval =" 8424 + fullBandConnectedTimeIntervalMilli); 8425 } 8426 } 8427 handleScanRequest( 8428 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8429 } else { 8430 if (!startScanForConfiguration( 8431 currentConfiguration, restrictChannelList)) { 8432 if (DBG) { 8433 logd("starting scan, " + 8434 " did not find channels -> full"); 8435 } 8436 lastFullBandConnectedTimeMilli = now_ms; 8437 if (fullBandConnectedTimeIntervalMilli 8438 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8439 // Increase the interval 8440 fullBandConnectedTimeIntervalMilli 8441 = fullBandConnectedTimeIntervalMilli 8442 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8443 8444 if (DBG) { 8445 logd("CMD_START_SCAN bump interval =" 8446 + fullBandConnectedTimeIntervalMilli); 8447 } 8448 } 8449 handleScanRequest( 8450 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8451 } 8452 } 8453 8454 } else { 8455 logd("CMD_START_SCAN : connected mode and no configuration"); 8456 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8457 } 8458 } else { 8459 // Not scan alarm source 8460 return NOT_HANDLED; 8461 } 8462 break; 8463 /* Ignore connection to same network */ 8464 case WifiManager.CONNECT_NETWORK: 8465 int netId = message.arg1; 8466 if (mWifiInfo.getNetworkId() == netId) { 8467 break; 8468 } 8469 return NOT_HANDLED; 8470 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8471 mWifiInfo.setBSSID((String) message.obj); 8472 mLastNetworkId = message.arg1; 8473 mWifiInfo.setNetworkId(mLastNetworkId); 8474 if(!mLastBssid.equals((String) message.obj)) { 8475 mLastBssid = (String) message.obj; 8476 sendNetworkStateChangeBroadcast(mLastBssid); 8477 } 8478 break; 8479 case CMD_RSSI_POLL: 8480 if (message.arg1 == mRssiPollToken) { 8481 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8482 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8483 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8484 if (stats != null) { 8485 // Sanity check the results provided by driver 8486 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8487 && (stats.rssi_mgmt == 0 8488 || stats.beacon_rx == 0)) { 8489 stats = null; 8490 } 8491 } 8492 // Get Info and continue polling 8493 fetchRssiLinkSpeedAndFrequencyNative(); 8494 calculateWifiScore(stats); 8495 } 8496 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8497 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8498 8499 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8500 } else { 8501 // Polling has completed 8502 } 8503 break; 8504 case CMD_ENABLE_RSSI_POLL: 8505 cleanWifiScore(); 8506 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8507 mEnableRssiPolling = (message.arg1 == 1); 8508 } else { 8509 mEnableRssiPolling = false; 8510 } 8511 mRssiPollToken++; 8512 if (mEnableRssiPolling) { 8513 // First poll 8514 fetchRssiLinkSpeedAndFrequencyNative(); 8515 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8516 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8517 } 8518 break; 8519 case WifiManager.RSSI_PKTCNT_FETCH: 8520 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8521 fetchRssiLinkSpeedAndFrequencyNative(); 8522 info.rssi = mWifiInfo.getRssi(); 8523 fetchPktcntNative(info); 8524 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8525 break; 8526 case CMD_DELAYED_NETWORK_DISCONNECT: 8527 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8528 8529 // Ignore if we are not debouncing 8530 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8531 + message.arg1); 8532 return HANDLED; 8533 } else { 8534 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8535 + message.arg1); 8536 8537 linkDebouncing = false; 8538 // If we are still debouncing while this message comes, 8539 // it means we were not able to reconnect within the alloted time 8540 // = LINK_FLAPPING_DEBOUNCE_MSEC 8541 // and thus, trigger a real disconnect 8542 handleNetworkDisconnect(); 8543 transitionTo(mDisconnectedState); 8544 } 8545 break; 8546 case CMD_ASSOCIATED_BSSID: 8547 if ((String) message.obj == null) { 8548 logw("Associated command w/o BSSID"); 8549 break; 8550 } 8551 mLastBssid = (String) message.obj; 8552 if (mLastBssid != null 8553 && (mWifiInfo.getBSSID() == null 8554 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8555 mWifiInfo.setBSSID((String) message.obj); 8556 sendNetworkStateChangeBroadcast(mLastBssid); 8557 } 8558 break; 8559 case CMD_START_RSSI_MONITORING_OFFLOAD: 8560 case CMD_RSSI_THRESHOLD_BREACH: 8561 byte currRssi = (byte) message.arg1; 8562 processRssiThreshold(currRssi, message.what); 8563 break; 8564 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8565 stopRssiMonitoringOffload(); 8566 break; 8567 default: 8568 return NOT_HANDLED; 8569 } 8570 8571 return HANDLED; 8572 } 8573 } 8574 8575 class ObtainingIpState extends State { 8576 @Override 8577 public void enter() { 8578 if (DBG) { 8579 String key = ""; 8580 if (getCurrentWifiConfiguration() != null) { 8581 key = getCurrentWifiConfiguration().configKey(); 8582 } 8583 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8584 + " " + key + " " 8585 + " roam=" + mAutoRoaming 8586 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8587 + " watchdog= " + obtainingIpWatchdogCount); 8588 } 8589 8590 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8591 // We might still be roaming 8592 linkDebouncing = false; 8593 8594 // Send event to CM & network change broadcast 8595 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8596 8597 // We must clear the config BSSID, as the wifi chipset may decide to roam 8598 // from this point on and having the BSSID specified in the network block would 8599 // cause the roam to faile and the device to disconnect 8600 clearCurrentConfigBSSID("ObtainingIpAddress"); 8601 8602 try { 8603 mNwService.enableIpv6(mInterfaceName); 8604 } catch (RemoteException re) { 8605 loge("Failed to enable IPv6: " + re); 8606 } catch (IllegalStateException e) { 8607 loge("Failed to enable IPv6: " + e); 8608 } 8609 8610 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8611 if (isRoaming()) { 8612 renewDhcp(); 8613 } else { 8614 // Remove any IP address on the interface in case we're switching from static 8615 // IP configuration to DHCP. This is safe because if we get here when not 8616 // roaming, we don't have a usable address. 8617 clearIPv4Address(mInterfaceName); 8618 startDhcp(); 8619 } 8620 obtainingIpWatchdogCount++; 8621 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8622 // Get Link layer stats so as we get fresh tx packet counters 8623 getWifiLinkLayerStats(true); 8624 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8625 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8626 } else { 8627 // stop any running dhcp before assigning static IP 8628 stopDhcp(); 8629 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8630 mLastNetworkId); 8631 if (config.ipAddress == null) { 8632 logd("Static IP lacks address"); 8633 sendMessage(CMD_STATIC_IP_FAILURE); 8634 } else { 8635 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8636 ifcg.setLinkAddress(config.ipAddress); 8637 ifcg.setInterfaceUp(); 8638 try { 8639 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8640 if (DBG) log("Static IP configuration succeeded"); 8641 DhcpResults dhcpResults = new DhcpResults(config); 8642 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8643 } catch (RemoteException re) { 8644 loge("Static IP configuration failed: " + re); 8645 sendMessage(CMD_STATIC_IP_FAILURE); 8646 } catch (IllegalStateException e) { 8647 loge("Static IP configuration failed: " + e); 8648 sendMessage(CMD_STATIC_IP_FAILURE); 8649 } 8650 } 8651 } 8652 } 8653 @Override 8654 public boolean processMessage(Message message) { 8655 logStateAndMessage(message, getClass().getSimpleName()); 8656 8657 switch(message.what) { 8658 case CMD_STATIC_IP_SUCCESS: 8659 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8660 break; 8661 case CMD_STATIC_IP_FAILURE: 8662 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8663 break; 8664 case CMD_AUTO_CONNECT: 8665 case CMD_AUTO_ROAM: 8666 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8667 break; 8668 case WifiManager.SAVE_NETWORK: 8669 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8670 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8671 deferMessage(message); 8672 break; 8673 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8674 case CMD_SET_HIGH_PERF_MODE: 8675 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8676 deferMessage(message); 8677 break; 8678 /* Defer scan request since we should not switch to other channels at DHCP */ 8679 case CMD_START_SCAN: 8680 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8681 deferMessage(message); 8682 break; 8683 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8684 if (message.arg1 == obtainingIpWatchdogCount) { 8685 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8686 + obtainingIpWatchdogCount); 8687 handleIpConfigurationLost(); 8688 transitionTo(mDisconnectingState); 8689 break; 8690 } 8691 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8692 break; 8693 default: 8694 return NOT_HANDLED; 8695 } 8696 return HANDLED; 8697 } 8698 } 8699 8700 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8701 // sets mPoorNetworkDetectionEnabled to false. 8702 class VerifyingLinkState extends State { 8703 @Override 8704 public void enter() { 8705 log(getName() + " enter"); 8706 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8707 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8708 sendNetworkStateChangeBroadcast(mLastBssid); 8709 // End roaming 8710 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8711 } 8712 @Override 8713 public boolean processMessage(Message message) { 8714 logStateAndMessage(message, getClass().getSimpleName()); 8715 8716 switch (message.what) { 8717 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8718 // Stay here 8719 log(getName() + " POOR_LINK_DETECTED: no transition"); 8720 break; 8721 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8722 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8723 sendConnectedState(); 8724 transitionTo(mConnectedState); 8725 break; 8726 default: 8727 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8728 return NOT_HANDLED; 8729 } 8730 return HANDLED; 8731 } 8732 } 8733 8734 private void sendConnectedState() { 8735 // If this network was explicitly selected by the user, evaluate whether to call 8736 // explicitlySelected() so the system can treat it appropriately. 8737 WifiConfiguration config = getCurrentWifiConfiguration(); 8738 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8739 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8740 if (DBG) { 8741 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8742 } 8743 if (prompt) { 8744 // Selected by the user via Settings or QuickSettings. If this network has Internet 8745 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8746 // really want to switch, or has already confirmed and selected "Don't ask again". 8747 if (DBG) { 8748 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8749 } 8750 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8751 } 8752 } 8753 8754 setNetworkDetailedState(DetailedState.CONNECTED); 8755 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8756 sendNetworkStateChangeBroadcast(mLastBssid); 8757 } 8758 8759 class RoamingState extends State { 8760 boolean mAssociated; 8761 @Override 8762 public void enter() { 8763 if (DBG) { 8764 log("RoamingState Enter" 8765 + " mScreenOn=" + mScreenOn ); 8766 } 8767 setScanAlarm(false); 8768 8769 // Make sure we disconnect if roaming fails 8770 roamWatchdogCount++; 8771 logd("Start Roam Watchdog " + roamWatchdogCount); 8772 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8773 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8774 mAssociated = false; 8775 } 8776 @Override 8777 public boolean processMessage(Message message) { 8778 logStateAndMessage(message, getClass().getSimpleName()); 8779 WifiConfiguration config; 8780 switch (message.what) { 8781 case CMD_IP_CONFIGURATION_LOST: 8782 config = getCurrentWifiConfiguration(); 8783 if (config != null) { 8784 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8785 mWifiConfigStore.noteRoamingFailure(config, 8786 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8787 } 8788 return NOT_HANDLED; 8789 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8790 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8791 return HANDLED; 8792 case CMD_UNWANTED_NETWORK: 8793 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8794 return HANDLED; 8795 case CMD_SET_OPERATIONAL_MODE: 8796 if (message.arg1 != CONNECT_MODE) { 8797 deferMessage(message); 8798 } 8799 break; 8800 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8801 /** 8802 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8803 * before NETWORK_DISCONNECTION_EVENT 8804 * And there is an associated BSSID corresponding to our target BSSID, then 8805 * we have missed the network disconnection, transition to mDisconnectedState 8806 * and handle the rest of the events there. 8807 */ 8808 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8809 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8810 || stateChangeResult.state == SupplicantState.INACTIVE 8811 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8812 if (DBG) { 8813 log("STATE_CHANGE_EVENT in roaming state " 8814 + stateChangeResult.toString() ); 8815 } 8816 if (stateChangeResult.BSSID != null 8817 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8818 handleNetworkDisconnect(); 8819 transitionTo(mDisconnectedState); 8820 } 8821 } 8822 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8823 // We completed the layer2 roaming part 8824 mAssociated = true; 8825 if (stateChangeResult.BSSID != null) { 8826 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8827 } 8828 } 8829 break; 8830 case CMD_ROAM_WATCHDOG_TIMER: 8831 if (roamWatchdogCount == message.arg1) { 8832 if (DBG) log("roaming watchdog! -> disconnect"); 8833 mRoamFailCount++; 8834 handleNetworkDisconnect(); 8835 mWifiNative.disconnect(); 8836 transitionTo(mDisconnectedState); 8837 } 8838 break; 8839 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8840 if (mAssociated) { 8841 if (DBG) log("roaming and Network connection established"); 8842 mLastNetworkId = message.arg1; 8843 mLastBssid = (String) message.obj; 8844 mWifiInfo.setBSSID(mLastBssid); 8845 mWifiInfo.setNetworkId(mLastNetworkId); 8846 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8847 sendNetworkStateChangeBroadcast(mLastBssid); 8848 transitionTo(mObtainingIpState); 8849 } else { 8850 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8851 } 8852 break; 8853 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8854 // Throw away but only if it corresponds to the network we're roaming to 8855 String bssid = (String)message.obj; 8856 if (true) { 8857 String target = ""; 8858 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8859 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8860 + " BSSID=" + bssid 8861 + " target=" + target); 8862 } 8863 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8864 handleNetworkDisconnect(); 8865 transitionTo(mDisconnectedState); 8866 } 8867 break; 8868 case WifiMonitor.SSID_TEMP_DISABLED: 8869 // Auth error while roaming 8870 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8871 + " id=" + Integer.toString(message.arg1) 8872 + " isRoaming=" + isRoaming() 8873 + " roam=" + Integer.toString(mAutoRoaming)); 8874 if (message.arg1 == mLastNetworkId) { 8875 config = getCurrentWifiConfiguration(); 8876 if (config != null) { 8877 mWifiLogger.captureBugReportData( 8878 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8879 mWifiConfigStore.noteRoamingFailure(config, 8880 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8881 } 8882 handleNetworkDisconnect(); 8883 transitionTo(mDisconnectingState); 8884 } 8885 return NOT_HANDLED; 8886 case CMD_START_SCAN: 8887 deferMessage(message); 8888 break; 8889 default: 8890 return NOT_HANDLED; 8891 } 8892 return HANDLED; 8893 } 8894 8895 @Override 8896 public void exit() { 8897 logd("WifiStateMachine: Leaving Roaming state"); 8898 } 8899 } 8900 8901 class ConnectedState extends State { 8902 @Override 8903 public void enter() { 8904 String address; 8905 updateDefaultRouteMacAddress(1000); 8906 if (DBG) { 8907 log("Enter ConnectedState " 8908 + " mScreenOn=" + mScreenOn 8909 + " scanperiod=" 8910 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8911 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8912 + mWifiConfigStore.enableHalBasedPno.get() 8913 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8914 } 8915 if (mScreenOn 8916 && getEnableAutoJoinWhenAssociated()) { 8917 if (useHalBasedAutoJoinOffload()) { 8918 startGScanConnectedModeOffload("connectedEnter"); 8919 } else { 8920 // restart scan alarm 8921 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8922 null, null); 8923 } 8924 } 8925 registerConnected(); 8926 lastConnectAttemptTimestamp = 0; 8927 targetWificonfiguration = null; 8928 // Paranoia 8929 linkDebouncing = false; 8930 8931 // Not roaming anymore 8932 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8933 8934 if (testNetworkDisconnect) { 8935 testNetworkDisconnectCounter++; 8936 logd("ConnectedState Enter start disconnect test " + 8937 testNetworkDisconnectCounter); 8938 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8939 testNetworkDisconnectCounter, 0), 15000); 8940 } 8941 8942 // Reenable all networks, allow for hidden networks to be scanned 8943 mWifiConfigStore.enableAllNetworks(); 8944 8945 mLastDriverRoamAttempt = 0; 8946 8947 //startLazyRoam(); 8948 } 8949 @Override 8950 public boolean processMessage(Message message) { 8951 WifiConfiguration config = null; 8952 logStateAndMessage(message, getClass().getSimpleName()); 8953 8954 switch (message.what) { 8955 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8956 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8957 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8958 return HANDLED; 8959 } 8960 /* If we are still in Disconnected state after having discovered a valid 8961 * network this means autojoin didnt managed to associate to the network, 8962 * then restart PNO so as we will try associating to it again. 8963 */ 8964 if (useHalBasedAutoJoinOffload()) { 8965 if (mGScanStartTimeMilli == 0) { 8966 // If offload is not started, then start it... 8967 startGScanConnectedModeOffload("connectedRestart"); 8968 } else { 8969 // If offload is already started, then check if we need to increase 8970 // the scan period and restart the Gscan 8971 long now = System.currentTimeMillis(); 8972 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8973 && ((now - mGScanStartTimeMilli) 8974 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8975 && (mGScanPeriodMilli 8976 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8977 { 8978 startConnectedGScan("Connected restart gscan"); 8979 } 8980 } 8981 } 8982 break; 8983 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8984 updateAssociatedScanPermission(); 8985 break; 8986 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8987 if (DBG) log("Watchdog reports poor link"); 8988 transitionTo(mVerifyingLinkState); 8989 break; 8990 case CMD_UNWANTED_NETWORK: 8991 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8992 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8993 mWifiNative.disconnect(); 8994 transitionTo(mDisconnectingState); 8995 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8996 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8997 config = getCurrentWifiConfiguration(); 8998 if (config != null) { 8999 // Disable autojoin 9000 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 9001 config.validatedInternetAccess = false; 9002 // Clear last-selected status, as being last-selected also avoids 9003 // disabling auto-join. 9004 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 9005 mWifiConfigStore.setLastSelectedConfiguration( 9006 WifiConfiguration.INVALID_NETWORK_ID); 9007 } 9008 } 9009 config.numNoInternetAccessReports += 1; 9010 config.dirty = true; 9011 mWifiConfigStore.writeKnownNetworkHistory(false); 9012 } 9013 } 9014 return HANDLED; 9015 case CMD_NETWORK_STATUS: 9016 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 9017 config = getCurrentWifiConfiguration(); 9018 if (config != null) { 9019 if (!config.validatedInternetAccess 9020 || config.numNoInternetAccessReports != 0) { 9021 config.dirty = true; 9022 } 9023 // re-enable autojoin 9024 config.numNoInternetAccessReports = 0; 9025 config.validatedInternetAccess = true; 9026 mWifiConfigStore.writeKnownNetworkHistory(false); 9027 } 9028 } 9029 return HANDLED; 9030 case CMD_ACCEPT_UNVALIDATED: 9031 boolean accept = (message.arg1 != 0); 9032 config = getCurrentWifiConfiguration(); 9033 if (config != null) { 9034 config.noInternetAccessExpected = accept; 9035 } 9036 return HANDLED; 9037 case CMD_TEST_NETWORK_DISCONNECT: 9038 // Force a disconnect 9039 if (message.arg1 == testNetworkDisconnectCounter) { 9040 mWifiNative.disconnect(); 9041 } 9042 break; 9043 case CMD_ASSOCIATED_BSSID: 9044 // ASSOCIATING to a new BSSID while already connected, indicates 9045 // that driver is roaming 9046 mLastDriverRoamAttempt = System.currentTimeMillis(); 9047 String toBSSID = (String)message.obj; 9048 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 9049 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 9050 } 9051 return NOT_HANDLED; 9052 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9053 long lastRoam = 0; 9054 if (mLastDriverRoamAttempt != 0) { 9055 // Calculate time since last driver roam attempt 9056 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 9057 mLastDriverRoamAttempt = 0; 9058 } 9059 if (unexpectedDisconnectedReason(message.arg2)) { 9060 mWifiLogger.captureBugReportData( 9061 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 9062 } 9063 config = getCurrentWifiConfiguration(); 9064 if (mScreenOn 9065 && !linkDebouncing 9066 && config != null 9067 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 9068 && !mWifiConfigStore.isLastSelectedConfiguration(config) 9069 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 9070 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 9071 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 9072 && mWifiInfo.getRssi() > 9073 WifiConfiguration.BAD_RSSI_24) 9074 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 9075 && mWifiInfo.getRssi() > 9076 WifiConfiguration.BAD_RSSI_5))) { 9077 // Start de-bouncing the L2 disconnection: 9078 // this L2 disconnection might be spurious. 9079 // Hence we allow 7 seconds for the state machine to try 9080 // to reconnect, go thru the 9081 // roaming cycle and enter Obtaining IP address 9082 // before signalling the disconnect to ConnectivityService and L3 9083 startScanForConfiguration(getCurrentWifiConfiguration(), false); 9084 linkDebouncing = true; 9085 9086 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 9087 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 9088 if (DBG) { 9089 log("NETWORK_DISCONNECTION_EVENT in connected state" 9090 + " BSSID=" + mWifiInfo.getBSSID() 9091 + " RSSI=" + mWifiInfo.getRssi() 9092 + " freq=" + mWifiInfo.getFrequency() 9093 + " reason=" + message.arg2 9094 + " -> debounce"); 9095 } 9096 return HANDLED; 9097 } else { 9098 if (DBG) { 9099 int ajst = -1; 9100 if (config != null) ajst = config.autoJoinStatus; 9101 log("NETWORK_DISCONNECTION_EVENT in connected state" 9102 + " BSSID=" + mWifiInfo.getBSSID() 9103 + " RSSI=" + mWifiInfo.getRssi() 9104 + " freq=" + mWifiInfo.getFrequency() 9105 + " was debouncing=" + linkDebouncing 9106 + " reason=" + message.arg2 9107 + " ajst=" + ajst); 9108 } 9109 } 9110 break; 9111 case CMD_AUTO_ROAM: 9112 // Clear the driver roam indication since we are attempting a framework roam 9113 mLastDriverRoamAttempt = 0; 9114 9115 /* Connect command coming from auto-join */ 9116 ScanResult candidate = (ScanResult)message.obj; 9117 String bssid = "any"; 9118 if (candidate != null && candidate.is5GHz()) { 9119 // Only lock BSSID for 5GHz networks 9120 bssid = candidate.BSSID; 9121 } 9122 int netId = mLastNetworkId; 9123 config = getCurrentWifiConfiguration(); 9124 9125 9126 if (config == null) { 9127 loge("AUTO_ROAM and no config, bail out..."); 9128 break; 9129 } 9130 9131 logd("CMD_AUTO_ROAM sup state " 9132 + mSupplicantStateTracker.getSupplicantStateName() 9133 + " my state " + getCurrentState().getName() 9134 + " nid=" + Integer.toString(netId) 9135 + " config " + config.configKey() 9136 + " roam=" + Integer.toString(message.arg2) 9137 + " to " + bssid 9138 + " targetRoamBSSID " + mTargetRoamBSSID); 9139 9140 /* Save the BSSID so as to lock it @ firmware */ 9141 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 9142 logd("AUTO_ROAM nothing to do"); 9143 // Same BSSID, nothing to do 9144 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9145 break; 9146 }; 9147 9148 // Make sure the network is enabled, since supplicant will not re-enable it 9149 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 9150 9151 if (deferForUserInput(message, netId, false)) { 9152 break; 9153 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 9154 WifiConfiguration.USER_BANNED) { 9155 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9156 WifiManager.NOT_AUTHORIZED); 9157 break; 9158 } 9159 9160 boolean ret = false; 9161 if (mLastNetworkId != netId) { 9162 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 9163 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 9164 ret = true; 9165 } 9166 } else { 9167 ret = mWifiNative.reassociate(); 9168 } 9169 if (ret) { 9170 lastConnectAttemptTimestamp = System.currentTimeMillis(); 9171 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 9172 9173 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 9174 mAutoRoaming = message.arg2; 9175 transitionTo(mRoamingState); 9176 9177 } else { 9178 loge("Failed to connect config: " + config + " netId: " + netId); 9179 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9180 WifiManager.ERROR); 9181 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9182 break; 9183 } 9184 break; 9185 case CMD_START_IP_PACKET_OFFLOAD: { 9186 int slot = message.arg1; 9187 int intervalSeconds = message.arg2; 9188 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9189 byte[] dstMac; 9190 try { 9191 InetAddress gateway = RouteInfo.selectBestRoute( 9192 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9193 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9194 dstMac = macAddressFromString(dstMacStr); 9195 } catch (NullPointerException|IllegalArgumentException e) { 9196 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9197 mNetworkAgent.onPacketKeepaliveEvent(slot, 9198 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9199 break; 9200 } 9201 pkt.dstMac = dstMac; 9202 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9203 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9204 break; 9205 } 9206 default: 9207 return NOT_HANDLED; 9208 } 9209 return HANDLED; 9210 } 9211 9212 @Override 9213 public void exit() { 9214 logd("WifiStateMachine: Leaving Connected state"); 9215 setScanAlarm(false); 9216 mLastDriverRoamAttempt = 0; 9217 9218 stopLazyRoam(); 9219 9220 mWhiteListedSsids = null; 9221 } 9222 } 9223 9224 class DisconnectingState extends State { 9225 9226 @Override 9227 public void enter() { 9228 9229 if (PDBG) { 9230 logd(" Enter DisconnectingState State scan interval " 9231 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9232 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9233 + " screenOn=" + mScreenOn); 9234 } 9235 9236 // Make sure we disconnect: we enter this state prior to connecting to a new 9237 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9238 // event which in this case will be indicating that supplicant started to associate. 9239 // In some cases supplicant doesn't ignore the connect requests (it might not 9240 // find the target SSID in its cache), 9241 // Therefore we end up stuck that state, hence the need for the watchdog. 9242 disconnectingWatchdogCount++; 9243 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9244 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9245 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9246 } 9247 9248 @Override 9249 public boolean processMessage(Message message) { 9250 logStateAndMessage(message, getClass().getSimpleName()); 9251 switch (message.what) { 9252 case CMD_SET_OPERATIONAL_MODE: 9253 if (message.arg1 != CONNECT_MODE) { 9254 deferMessage(message); 9255 } 9256 break; 9257 case CMD_START_SCAN: 9258 deferMessage(message); 9259 return HANDLED; 9260 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9261 if (disconnectingWatchdogCount == message.arg1) { 9262 if (DBG) log("disconnecting watchdog! -> disconnect"); 9263 handleNetworkDisconnect(); 9264 transitionTo(mDisconnectedState); 9265 } 9266 break; 9267 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9268 /** 9269 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9270 * we have missed the network disconnection, transition to mDisconnectedState 9271 * and handle the rest of the events there 9272 */ 9273 deferMessage(message); 9274 handleNetworkDisconnect(); 9275 transitionTo(mDisconnectedState); 9276 break; 9277 default: 9278 return NOT_HANDLED; 9279 } 9280 return HANDLED; 9281 } 9282 } 9283 9284 class DisconnectedState extends State { 9285 @Override 9286 public void enter() { 9287 // We dont scan frequently if this is a temporary disconnect 9288 // due to p2p 9289 if (mTemporarilyDisconnectWifi) { 9290 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9291 return; 9292 } 9293 9294 if (PDBG) { 9295 logd(" Enter DisconnectedState scan interval " 9296 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9297 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9298 + " screenOn=" + mScreenOn 9299 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9300 + mWifiConfigStore.enableHalBasedPno.get()); 9301 } 9302 9303 /** clear the roaming state, if we were roaming, we failed */ 9304 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 9305 9306 if (useHalBasedAutoJoinOffload()) { 9307 startGScanDisconnectedModeOffload("disconnectedEnter"); 9308 } else { 9309 if (mScreenOn) { 9310 /** 9311 * screen lit and => start scan immediately 9312 */ 9313 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9314 } else { 9315 /** 9316 * screen dark and PNO supported => scan alarm disabled 9317 */ 9318 if (mBackgroundScanSupported) { 9319 /* If a regular scan result is pending, do not initiate background 9320 * scan until the scan results are returned. This is needed because 9321 * initiating a background scan will cancel the regular scan and 9322 * scan results will not be returned until background scanning is 9323 * cleared 9324 */ 9325 if (!mIsScanOngoing) { 9326 enableBackgroundScan(true); 9327 } 9328 } else { 9329 setScanAlarm(true); 9330 } 9331 } 9332 } 9333 9334 /** 9335 * If we have no networks saved, the supplicant stops doing the periodic scan. 9336 * The scans are useful to notify the user of the presence of an open network. 9337 * Note that these are not wake up scans. 9338 */ 9339 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9340 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9341 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9342 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9343 } 9344 9345 mDisconnectedTimeStamp = System.currentTimeMillis(); 9346 mDisconnectedPnoAlarmCount = 0; 9347 } 9348 @Override 9349 public boolean processMessage(Message message) { 9350 boolean ret = HANDLED; 9351 9352 logStateAndMessage(message, getClass().getSimpleName()); 9353 9354 switch (message.what) { 9355 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9356 if (mP2pConnected.get()) break; 9357 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9358 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9359 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9360 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9361 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9362 } 9363 break; 9364 case WifiManager.FORGET_NETWORK: 9365 case CMD_REMOVE_NETWORK: 9366 case CMD_REMOVE_APP_CONFIGURATIONS: 9367 case CMD_REMOVE_USER_CONFIGURATIONS: 9368 // Set up a delayed message here. After the forget/remove is handled 9369 // the handled delayed message will determine if there is a need to 9370 // scan and continue 9371 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9372 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9373 ret = NOT_HANDLED; 9374 break; 9375 case CMD_SET_OPERATIONAL_MODE: 9376 if (message.arg1 != CONNECT_MODE) { 9377 mOperationalMode = message.arg1; 9378 9379 mWifiConfigStore.disableAllNetworks(); 9380 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9381 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9382 setWifiState(WIFI_STATE_DISABLED); 9383 } 9384 transitionTo(mScanModeState); 9385 } 9386 mWifiConfigStore. 9387 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9388 break; 9389 /* Ignore network disconnect */ 9390 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9391 break; 9392 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9393 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9394 if (DBG) { 9395 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9396 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9397 + " debouncing=" + linkDebouncing); 9398 } 9399 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9400 /* ConnectModeState does the rest of the handling */ 9401 ret = NOT_HANDLED; 9402 break; 9403 case CMD_START_SCAN: 9404 if (!checkOrDeferScanAllowed(message)) { 9405 // The scan request was rescheduled 9406 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9407 return HANDLED; 9408 } 9409 if (message.arg1 == SCAN_ALARM_SOURCE) { 9410 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9411 // not be processed) and restart the scan 9412 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9413 if (mP2pConnected.get()) { 9414 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9415 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9416 period); 9417 } 9418 if (!checkAndRestartDelayedScan(message.arg2, 9419 true, period, null, null)) { 9420 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9421 logd("Disconnected CMD_START_SCAN source " 9422 + message.arg1 9423 + " " + message.arg2 + ", " + mDelayedScanCounter 9424 + " -> obsolete"); 9425 return HANDLED; 9426 } 9427 /* Disable background scan temporarily during a regular scan */ 9428 enableBackgroundScan(false); 9429 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9430 ret = HANDLED; 9431 } else { 9432 9433 /* 9434 * The SCAN request is not handled in this state and 9435 * would eventually might/will get handled in the 9436 * parent's state. The PNO, if already enabled had to 9437 * get disabled before the SCAN trigger. Hence, stop 9438 * the PNO if already enabled in this state, though the 9439 * SCAN request is not handled(PNO disable before the 9440 * SCAN trigger in any other state is not the right 9441 * place to issue). 9442 */ 9443 9444 enableBackgroundScan(false); 9445 ret = NOT_HANDLED; 9446 } 9447 break; 9448 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9449 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9450 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9451 return HANDLED; 9452 } 9453 /* If we are still in Disconnected state after having discovered a valid 9454 * network this means autojoin didnt managed to associate to the network, 9455 * then restart PNO so as we will try associating to it again. 9456 */ 9457 if (useHalBasedAutoJoinOffload()) { 9458 if (mGScanStartTimeMilli == 0) { 9459 // If offload is not started, then start it... 9460 startGScanDisconnectedModeOffload("disconnectedRestart"); 9461 } else { 9462 // If offload is already started, then check if we need to increase 9463 // the scan period and restart the Gscan 9464 long now = System.currentTimeMillis(); 9465 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9466 && ((now - mGScanStartTimeMilli) 9467 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9468 && (mGScanPeriodMilli 9469 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9470 { 9471 startDisconnectedGScan("disconnected restart gscan"); 9472 } 9473 } 9474 } else { 9475 // If we are still disconnected for a short while after having found a 9476 // network thru PNO, then something went wrong, and for some reason we 9477 // couldn't join this network. 9478 // It might be due to a SW bug in supplicant or the wifi stack, or an 9479 // interoperability issue, or we try to join a bad bss and failed 9480 // In that case we want to restart pno so as to make sure that we will 9481 // attempt again to join that network. 9482 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9483 enableBackgroundScan(false); 9484 enableBackgroundScan(true); 9485 } 9486 return HANDLED; 9487 } 9488 break; 9489 case WifiMonitor.SCAN_RESULTS_EVENT: 9490 case WifiMonitor.SCAN_FAILED_EVENT: 9491 /* Re-enable background scan when a pending scan result is received */ 9492 if (!mScreenOn && mIsScanOngoing 9493 && mBackgroundScanSupported 9494 && !useHalBasedAutoJoinOffload()) { 9495 enableBackgroundScan(true); 9496 } else if (!mScreenOn 9497 && !mIsScanOngoing 9498 && mBackgroundScanSupported 9499 && !useHalBasedAutoJoinOffload()) { 9500 // We receive scan results from legacy PNO, hence restart the PNO alarm 9501 int delay; 9502 if (mDisconnectedPnoAlarmCount < 1) { 9503 delay = 30 * 1000; 9504 } else if (mDisconnectedPnoAlarmCount < 3) { 9505 delay = 60 * 1000; 9506 } else { 9507 delay = 360 * 1000; 9508 } 9509 mDisconnectedPnoAlarmCount++; 9510 if (VDBG) { 9511 logd("Starting PNO alarm " + delay); 9512 } 9513 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9514 System.currentTimeMillis() + delay, 9515 mPnoIntent); 9516 } 9517 /* Handled in parent state */ 9518 ret = NOT_HANDLED; 9519 break; 9520 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9521 NetworkInfo info = (NetworkInfo) message.obj; 9522 mP2pConnected.set(info.isConnected()); 9523 if (mP2pConnected.get()) { 9524 int defaultInterval = mContext.getResources().getInteger( 9525 R.integer.config_wifi_scan_interval_p2p_connected); 9526 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9527 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9528 defaultInterval); 9529 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9530 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9531 if (DBG) log("Turn on scanning after p2p disconnected"); 9532 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9533 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9534 } else { 9535 // If P2P is not connected and there are saved networks, then restart 9536 // scanning at the normal period. This is necessary because scanning might 9537 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9538 // was set to zero. 9539 if (useHalBasedAutoJoinOffload()) { 9540 startGScanDisconnectedModeOffload("p2pRestart"); 9541 } else { 9542 startDelayedScan( 9543 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9544 null, null); 9545 } 9546 } 9547 break; 9548 case CMD_RECONNECT: 9549 case CMD_REASSOCIATE: 9550 if (mTemporarilyDisconnectWifi) { 9551 // Drop a third party reconnect/reassociate if STA is 9552 // temporarily disconnected for p2p 9553 break; 9554 } else { 9555 // ConnectModeState handles it 9556 ret = NOT_HANDLED; 9557 } 9558 break; 9559 case CMD_SCREEN_STATE_CHANGED: 9560 handleScreenStateChanged(message.arg1 != 0); 9561 break; 9562 default: 9563 ret = NOT_HANDLED; 9564 } 9565 return ret; 9566 } 9567 9568 @Override 9569 public void exit() { 9570 mDisconnectedPnoAlarmCount = 0; 9571 /* No need for a background scan upon exit from a disconnected state */ 9572 enableBackgroundScan(false); 9573 setScanAlarm(false); 9574 mAlarmManager.cancel(mPnoIntent); 9575 } 9576 } 9577 9578 class WpsRunningState extends State { 9579 // Tracks the source to provide a reply 9580 private Message mSourceMessage; 9581 @Override 9582 public void enter() { 9583 mSourceMessage = Message.obtain(getCurrentMessage()); 9584 } 9585 @Override 9586 public boolean processMessage(Message message) { 9587 logStateAndMessage(message, getClass().getSimpleName()); 9588 9589 switch (message.what) { 9590 case WifiMonitor.WPS_SUCCESS_EVENT: 9591 // Ignore intermediate success, wait for full connection 9592 break; 9593 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9594 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9595 mSourceMessage.recycle(); 9596 mSourceMessage = null; 9597 deferMessage(message); 9598 transitionTo(mDisconnectedState); 9599 break; 9600 case WifiMonitor.WPS_OVERLAP_EVENT: 9601 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9602 WifiManager.WPS_OVERLAP_ERROR); 9603 mSourceMessage.recycle(); 9604 mSourceMessage = null; 9605 transitionTo(mDisconnectedState); 9606 break; 9607 case WifiMonitor.WPS_FAIL_EVENT: 9608 // Arg1 has the reason for the failure 9609 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9610 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9611 mSourceMessage.recycle(); 9612 mSourceMessage = null; 9613 transitionTo(mDisconnectedState); 9614 } else { 9615 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9616 } 9617 break; 9618 case WifiMonitor.WPS_TIMEOUT_EVENT: 9619 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9620 WifiManager.WPS_TIMED_OUT); 9621 mSourceMessage.recycle(); 9622 mSourceMessage = null; 9623 transitionTo(mDisconnectedState); 9624 break; 9625 case WifiManager.START_WPS: 9626 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9627 break; 9628 case WifiManager.CANCEL_WPS: 9629 if (mWifiNative.cancelWps()) { 9630 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9631 } else { 9632 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9633 } 9634 transitionTo(mDisconnectedState); 9635 break; 9636 /** 9637 * Defer all commands that can cause connections to a different network 9638 * or put the state machine out of connect mode 9639 */ 9640 case CMD_STOP_DRIVER: 9641 case CMD_SET_OPERATIONAL_MODE: 9642 case WifiManager.CONNECT_NETWORK: 9643 case CMD_ENABLE_NETWORK: 9644 case CMD_RECONNECT: 9645 case CMD_REASSOCIATE: 9646 case CMD_ENABLE_ALL_NETWORKS: 9647 deferMessage(message); 9648 break; 9649 case CMD_AUTO_CONNECT: 9650 case CMD_AUTO_ROAM: 9651 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9652 return HANDLED; 9653 case CMD_START_SCAN: 9654 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9655 return HANDLED; 9656 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9657 if (DBG) log("Network connection lost"); 9658 handleNetworkDisconnect(); 9659 break; 9660 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9661 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9662 break; 9663 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9664 // Disregard auth failure events during WPS connection. The 9665 // EAP sequence is retried several times, and there might be 9666 // failures (especially for wps pin). We will get a WPS_XXX 9667 // event at the end of the sequence anyway. 9668 if (DBG) log("Ignore auth failure during WPS connection"); 9669 break; 9670 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9671 // Throw away supplicant state changes when WPS is running. 9672 // We will start getting supplicant state changes once we get 9673 // a WPS success or failure 9674 break; 9675 default: 9676 return NOT_HANDLED; 9677 } 9678 return HANDLED; 9679 } 9680 9681 @Override 9682 public void exit() { 9683 mWifiConfigStore.enableAllNetworks(); 9684 mWifiConfigStore.loadConfiguredNetworks(); 9685 } 9686 } 9687 9688 class SoftApStartingState extends State { 9689 @Override 9690 public void enter() { 9691 final Message message = getCurrentMessage(); 9692 if (message.what == CMD_START_AP) { 9693 final WifiConfiguration config = (WifiConfiguration) message.obj; 9694 9695 if (config == null) { 9696 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9697 } else { 9698 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9699 startSoftApWithConfig(config); 9700 } 9701 } else { 9702 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9703 } 9704 } 9705 @Override 9706 public boolean processMessage(Message message) { 9707 logStateAndMessage(message, getClass().getSimpleName()); 9708 9709 switch(message.what) { 9710 case CMD_START_SUPPLICANT: 9711 case CMD_STOP_SUPPLICANT: 9712 case CMD_START_AP: 9713 case CMD_STOP_AP: 9714 case CMD_START_DRIVER: 9715 case CMD_STOP_DRIVER: 9716 case CMD_SET_OPERATIONAL_MODE: 9717 case CMD_SET_COUNTRY_CODE: 9718 case CMD_SET_FREQUENCY_BAND: 9719 case CMD_START_PACKET_FILTERING: 9720 case CMD_STOP_PACKET_FILTERING: 9721 case CMD_TETHER_STATE_CHANGE: 9722 deferMessage(message); 9723 break; 9724 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9725 WifiConfiguration config = (WifiConfiguration) message.obj; 9726 if (config != null) { 9727 startSoftApWithConfig(config); 9728 } else { 9729 loge("Softap config is null!"); 9730 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9731 } 9732 break; 9733 case CMD_START_AP_SUCCESS: 9734 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9735 transitionTo(mSoftApStartedState); 9736 break; 9737 case CMD_START_AP_FAILURE: 9738 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9739 transitionTo(mInitialState); 9740 break; 9741 default: 9742 return NOT_HANDLED; 9743 } 9744 return HANDLED; 9745 } 9746 } 9747 9748 class SoftApStartedState extends State { 9749 @Override 9750 public boolean processMessage(Message message) { 9751 logStateAndMessage(message, getClass().getSimpleName()); 9752 9753 switch(message.what) { 9754 case CMD_STOP_AP: 9755 if (DBG) log("Stopping Soft AP"); 9756 /* We have not tethered at this point, so we just shutdown soft Ap */ 9757 try { 9758 mNwService.stopAccessPoint(mInterfaceName); 9759 } catch(Exception e) { 9760 loge("Exception in stopAccessPoint()"); 9761 } 9762 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9763 transitionTo(mInitialState); 9764 break; 9765 case CMD_START_AP: 9766 // Ignore a start on a running access point 9767 break; 9768 // Fail client mode operation when soft AP is enabled 9769 case CMD_START_SUPPLICANT: 9770 loge("Cannot start supplicant with a running soft AP"); 9771 setWifiState(WIFI_STATE_UNKNOWN); 9772 break; 9773 case CMD_TETHER_STATE_CHANGE: 9774 TetherStateChange stateChange = (TetherStateChange) message.obj; 9775 if (startTethering(stateChange.available)) { 9776 transitionTo(mTetheringState); 9777 } 9778 break; 9779 default: 9780 return NOT_HANDLED; 9781 } 9782 return HANDLED; 9783 } 9784 } 9785 9786 class TetheringState extends State { 9787 @Override 9788 public void enter() { 9789 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9790 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9791 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9792 } 9793 @Override 9794 public boolean processMessage(Message message) { 9795 logStateAndMessage(message, getClass().getSimpleName()); 9796 9797 switch(message.what) { 9798 case CMD_TETHER_STATE_CHANGE: 9799 TetherStateChange stateChange = (TetherStateChange) message.obj; 9800 if (isWifiTethered(stateChange.active)) { 9801 transitionTo(mTetheredState); 9802 } 9803 return HANDLED; 9804 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9805 if (message.arg1 == mTetherToken) { 9806 loge("Failed to get tether update, shutdown soft access point"); 9807 transitionTo(mSoftApStartedState); 9808 // Needs to be first thing handled 9809 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9810 } 9811 break; 9812 case CMD_START_SUPPLICANT: 9813 case CMD_STOP_SUPPLICANT: 9814 case CMD_START_AP: 9815 case CMD_STOP_AP: 9816 case CMD_START_DRIVER: 9817 case CMD_STOP_DRIVER: 9818 case CMD_SET_OPERATIONAL_MODE: 9819 case CMD_SET_COUNTRY_CODE: 9820 case CMD_SET_FREQUENCY_BAND: 9821 case CMD_START_PACKET_FILTERING: 9822 case CMD_STOP_PACKET_FILTERING: 9823 deferMessage(message); 9824 break; 9825 default: 9826 return NOT_HANDLED; 9827 } 9828 return HANDLED; 9829 } 9830 } 9831 9832 class TetheredState extends State { 9833 @Override 9834 public boolean processMessage(Message message) { 9835 logStateAndMessage(message, getClass().getSimpleName()); 9836 9837 switch(message.what) { 9838 case CMD_TETHER_STATE_CHANGE: 9839 TetherStateChange stateChange = (TetherStateChange) message.obj; 9840 if (!isWifiTethered(stateChange.active)) { 9841 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9842 setHostApRunning(null, false); 9843 setHostApRunning(null, true); 9844 } 9845 return HANDLED; 9846 case CMD_STOP_AP: 9847 if (DBG) log("Untethering before stopping AP"); 9848 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9849 stopTethering(); 9850 transitionTo(mUntetheringState); 9851 // More work to do after untethering 9852 deferMessage(message); 9853 break; 9854 default: 9855 return NOT_HANDLED; 9856 } 9857 return HANDLED; 9858 } 9859 } 9860 9861 class UntetheringState extends State { 9862 @Override 9863 public void enter() { 9864 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9865 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9866 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9867 9868 } 9869 @Override 9870 public boolean processMessage(Message message) { 9871 logStateAndMessage(message, getClass().getSimpleName()); 9872 9873 switch(message.what) { 9874 case CMD_TETHER_STATE_CHANGE: 9875 TetherStateChange stateChange = (TetherStateChange) message.obj; 9876 9877 /* Wait till wifi is untethered */ 9878 if (isWifiTethered(stateChange.active)) break; 9879 9880 transitionTo(mSoftApStartedState); 9881 break; 9882 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9883 if (message.arg1 == mTetherToken) { 9884 loge("Failed to get tether update, force stop access point"); 9885 transitionTo(mSoftApStartedState); 9886 } 9887 break; 9888 case CMD_START_SUPPLICANT: 9889 case CMD_STOP_SUPPLICANT: 9890 case CMD_START_AP: 9891 case CMD_STOP_AP: 9892 case CMD_START_DRIVER: 9893 case CMD_STOP_DRIVER: 9894 case CMD_SET_OPERATIONAL_MODE: 9895 case CMD_SET_COUNTRY_CODE: 9896 case CMD_SET_FREQUENCY_BAND: 9897 case CMD_START_PACKET_FILTERING: 9898 case CMD_STOP_PACKET_FILTERING: 9899 deferMessage(message); 9900 break; 9901 default: 9902 return NOT_HANDLED; 9903 } 9904 return HANDLED; 9905 } 9906 } 9907 9908 /** 9909 * State machine initiated requests can have replyTo set to null indicating 9910 * there are no recepients, we ignore those reply actions. 9911 */ 9912 private void replyToMessage(Message msg, int what) { 9913 if (msg.replyTo == null) return; 9914 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9915 mReplyChannel.replyToMessage(msg, dstMsg); 9916 } 9917 9918 private void replyToMessage(Message msg, int what, int arg1) { 9919 if (msg.replyTo == null) return; 9920 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9921 dstMsg.arg1 = arg1; 9922 mReplyChannel.replyToMessage(msg, dstMsg); 9923 } 9924 9925 private void replyToMessage(Message msg, int what, Object obj) { 9926 if (msg.replyTo == null) return; 9927 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9928 dstMsg.obj = obj; 9929 mReplyChannel.replyToMessage(msg, dstMsg); 9930 } 9931 9932 /** 9933 * arg2 on the source message has a unique id that needs to be retained in replies 9934 * to match the request 9935 * <p>see WifiManager for details 9936 */ 9937 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9938 Message msg = Message.obtain(); 9939 msg.what = what; 9940 msg.arg2 = srcMsg.arg2; 9941 return msg; 9942 } 9943 9944 /** 9945 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9946 * @param msg Must have a WifiConfiguration obj to succeed 9947 */ 9948 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9949 WifiConfiguration config) { 9950 if (config != null && config.preSharedKey != null) { 9951 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9952 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9953 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9954 wifiCredentialEventType); 9955 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9956 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9957 } 9958 } 9959 9960 private static int parseHex(char ch) { 9961 if ('0' <= ch && ch <= '9') { 9962 return ch - '0'; 9963 } else if ('a' <= ch && ch <= 'f') { 9964 return ch - 'a' + 10; 9965 } else if ('A' <= ch && ch <= 'F') { 9966 return ch - 'A' + 10; 9967 } else { 9968 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9969 } 9970 } 9971 9972 private byte[] parseHex(String hex) { 9973 /* This only works for good input; don't throw bad data at it */ 9974 if (hex == null) { 9975 return new byte[0]; 9976 } 9977 9978 if (hex.length() % 2 != 0) { 9979 throw new NumberFormatException(hex + " is not a valid hex string"); 9980 } 9981 9982 byte[] result = new byte[(hex.length())/2 + 1]; 9983 result[0] = (byte) ((hex.length())/2); 9984 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9985 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9986 byte b = (byte) (val & 0xFF); 9987 result[j] = b; 9988 } 9989 9990 return result; 9991 } 9992 9993 private static String makeHex(byte[] bytes) { 9994 StringBuilder sb = new StringBuilder(); 9995 for (byte b : bytes) { 9996 sb.append(String.format("%02x", b)); 9997 } 9998 return sb.toString(); 9999 } 10000 10001 private static String makeHex(byte[] bytes, int from, int len) { 10002 StringBuilder sb = new StringBuilder(); 10003 for (int i = 0; i < len; i++) { 10004 sb.append(String.format("%02x", bytes[from+i])); 10005 } 10006 return sb.toString(); 10007 } 10008 10009 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 10010 10011 int len = array1.length + array2.length + array3.length; 10012 10013 if (array1.length != 0) { 10014 len++; /* add another byte for size */ 10015 } 10016 10017 if (array2.length != 0) { 10018 len++; /* add another byte for size */ 10019 } 10020 10021 if (array3.length != 0) { 10022 len++; /* add another byte for size */ 10023 } 10024 10025 byte[] result = new byte[len]; 10026 10027 int index = 0; 10028 if (array1.length != 0) { 10029 result[index] = (byte) (array1.length & 0xFF); 10030 index++; 10031 for (byte b : array1) { 10032 result[index] = b; 10033 index++; 10034 } 10035 } 10036 10037 if (array2.length != 0) { 10038 result[index] = (byte) (array2.length & 0xFF); 10039 index++; 10040 for (byte b : array2) { 10041 result[index] = b; 10042 index++; 10043 } 10044 } 10045 10046 if (array3.length != 0) { 10047 result[index] = (byte) (array3.length & 0xFF); 10048 index++; 10049 for (byte b : array3) { 10050 result[index] = b; 10051 index++; 10052 } 10053 } 10054 return result; 10055 } 10056 10057 private static byte[] concatHex(byte[] array1, byte[] array2) { 10058 10059 int len = array1.length + array2.length; 10060 10061 byte[] result = new byte[len]; 10062 10063 int index = 0; 10064 if (array1.length != 0) { 10065 for (byte b : array1) { 10066 result[index] = b; 10067 index++; 10068 } 10069 } 10070 10071 if (array2.length != 0) { 10072 for (byte b : array2) { 10073 result[index] = b; 10074 index++; 10075 } 10076 } 10077 10078 return result; 10079 } 10080 10081 void handleGsmAuthRequest(SimAuthRequestData requestData) { 10082 if (targetWificonfiguration == null 10083 || targetWificonfiguration.networkId == requestData.networkId) { 10084 logd("id matches targetWifiConfiguration"); 10085 } else { 10086 logd("id does not match targetWifiConfiguration"); 10087 return; 10088 } 10089 10090 TelephonyManager tm = (TelephonyManager) 10091 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10092 10093 if (tm != null) { 10094 StringBuilder sb = new StringBuilder(); 10095 for (String challenge : requestData.data) { 10096 10097 if (challenge == null || challenge.isEmpty()) 10098 continue; 10099 logd("RAND = " + challenge); 10100 10101 byte[] rand = null; 10102 try { 10103 rand = parseHex(challenge); 10104 } catch (NumberFormatException e) { 10105 loge("malformed challenge"); 10106 continue; 10107 } 10108 10109 String base64Challenge = android.util.Base64.encodeToString( 10110 rand, android.util.Base64.NO_WRAP); 10111 /* 10112 * First, try with appType = 2 => USIM according to 10113 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 10114 */ 10115 int appType = 2; 10116 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10117 if (tmResponse == null) { 10118 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 10119 * appType = 1 => SIM 10120 */ 10121 appType = 1; 10122 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10123 } 10124 logv("Raw Response - " + tmResponse); 10125 10126 if (tmResponse != null && tmResponse.length() > 4) { 10127 byte[] result = android.util.Base64.decode(tmResponse, 10128 android.util.Base64.DEFAULT); 10129 logv("Hex Response -" + makeHex(result)); 10130 int sres_len = result[0]; 10131 String sres = makeHex(result, 1, sres_len); 10132 int kc_offset = 1+sres_len; 10133 int kc_len = result[kc_offset]; 10134 String kc = makeHex(result, 1+kc_offset, kc_len); 10135 sb.append(":" + kc + ":" + sres); 10136 logv("kc:" + kc + " sres:" + sres); 10137 } else { 10138 loge("bad response - " + tmResponse); 10139 } 10140 } 10141 10142 String response = sb.toString(); 10143 logv("Supplicant Response -" + response); 10144 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 10145 } else { 10146 loge("could not get telephony manager"); 10147 } 10148 } 10149 10150 void handle3GAuthRequest(SimAuthRequestData requestData) { 10151 StringBuilder sb = new StringBuilder(); 10152 byte[] rand = null; 10153 byte[] authn = null; 10154 String res_type = "UMTS-AUTH"; 10155 10156 if (targetWificonfiguration == null 10157 || targetWificonfiguration.networkId == requestData.networkId) { 10158 logd("id matches targetWifiConfiguration"); 10159 } else { 10160 logd("id does not match targetWifiConfiguration"); 10161 return; 10162 } 10163 if (requestData.data.length == 2) { 10164 try { 10165 rand = parseHex(requestData.data[0]); 10166 authn = parseHex(requestData.data[1]); 10167 } catch (NumberFormatException e) { 10168 loge("malformed challenge"); 10169 } 10170 } else { 10171 loge("malformed challenge"); 10172 } 10173 10174 String tmResponse = ""; 10175 if (rand != null && authn != null) { 10176 String base64Challenge = android.util.Base64.encodeToString( 10177 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10178 10179 TelephonyManager tm = (TelephonyManager) 10180 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10181 if (tm != null) { 10182 int appType = 2; // 2 => USIM 10183 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10184 logv("Raw Response - " + tmResponse); 10185 } else { 10186 loge("could not get telephony manager"); 10187 } 10188 } 10189 10190 if (tmResponse != null && tmResponse.length() > 4) { 10191 byte[] result = android.util.Base64.decode(tmResponse, 10192 android.util.Base64.DEFAULT); 10193 loge("Hex Response - " + makeHex(result)); 10194 byte tag = result[0]; 10195 if (tag == (byte) 0xdb) { 10196 logv("successful 3G authentication "); 10197 int res_len = result[1]; 10198 String res = makeHex(result, 2, res_len); 10199 int ck_len = result[res_len + 2]; 10200 String ck = makeHex(result, res_len + 3, ck_len); 10201 int ik_len = result[res_len + ck_len + 3]; 10202 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10203 sb.append(":" + ik + ":" + ck + ":" + res); 10204 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10205 } else if (tag == (byte) 0xdc) { 10206 loge("synchronisation failure"); 10207 int auts_len = result[1]; 10208 String auts = makeHex(result, 2, auts_len); 10209 res_type = "UMTS-AUTS"; 10210 sb.append(":" + auts); 10211 logv("auts:" + auts); 10212 } else { 10213 loge("bad response - unknown tag = " + tag); 10214 return; 10215 } 10216 } else { 10217 loge("bad response - " + tmResponse); 10218 return; 10219 } 10220 10221 String response = sb.toString(); 10222 logv("Supplicant Response -" + response); 10223 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10224 } 10225 10226 /** 10227 * @param reason reason code from supplicant on network disconnected event 10228 * @return true if this is a suspicious disconnect 10229 */ 10230 static boolean unexpectedDisconnectedReason(int reason) { 10231 return reason == 2 // PREV_AUTH_NOT_VALID 10232 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10233 || reason == 7 // FRAME_FROM_NONASSOC_STA 10234 || reason == 8 // STA_HAS_LEFT 10235 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10236 || reason == 14 // MICHAEL_MIC_FAILURE 10237 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10238 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10239 || reason == 18 // GROUP_CIPHER_NOT_VALID 10240 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10241 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10242 || reason == 34; // DISASSOC_LOW_ACK 10243 } 10244} 10245