WifiStateMachine.java revision fdce524fd05844c996cf1c5c0c102a87fde8e32c
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 private int mCurrentAssociateNetworkId = -1; 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 /* SIM is removed; reset any cached data for it */ 747 static final int CMD_RESET_SIM_NETWORKS = BASE + 101; 748 749 /** 750 * Make this timer 40 seconds, which is about the normal DHCP timeout. 751 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 752 * for more than 30 seconds. 753 */ 754 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 755 756 int obtainingIpWatchdogCount = 0; 757 758 /* Commands from/to the SupplicantStateTracker */ 759 /* Reset the supplicant state tracker */ 760 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 761 762 int disconnectingWatchdogCount = 0; 763 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 764 765 /* P2p commands */ 766 /* We are ok with no response here since we wont do much with it anyway */ 767 public static final int CMD_ENABLE_P2P = BASE + 131; 768 /* In order to shut down supplicant cleanly, we wait till p2p has 769 * been disabled */ 770 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 771 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 772 773 public static final int CMD_BOOT_COMPLETED = BASE + 134; 774 775 /* We now have a valid IP configuration. */ 776 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 777 /* We no longer have a valid IP configuration. */ 778 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 779 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 780 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 781 782 /* Supplicant is trying to associate to a given BSSID */ 783 static final int CMD_TARGET_BSSID = BASE + 141; 784 785 /* Reload all networks and reconnect */ 786 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 787 788 static final int CMD_AUTO_CONNECT = BASE + 143; 789 790 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 791 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 792 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 793 794 static final int CMD_UNWANTED_NETWORK = BASE + 144; 795 796 static final int CMD_AUTO_ROAM = BASE + 145; 797 798 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 799 800 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 801 802 static final int CMD_NETWORK_STATUS = BASE + 148; 803 804 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 805 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 806 807 /* Remove a packages associated configrations */ 808 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 809 810 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 811 812 /* used to restart PNO when it was stopped due to association attempt */ 813 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 814 815 static int mRestartAutoJoinOffloadCounter = 0; 816 817 /* used to log if PNO was started */ 818 static final int CMD_STARTED_PNO_DBG = BASE + 155; 819 820 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 821 822 /* used to log if PNO was started */ 823 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 824 825 /* used to log if GSCAN was started */ 826 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 827 828 /* used to offload sending IP packet */ 829 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 830 831 /* used to stop offload sending IP packet */ 832 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 833 834 /* used to start rssi monitoring in hw */ 835 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 836 837 /* used to stop rssi moniroting in hw */ 838 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 839 840 /* used to indicated RSSI threshold breach in hw */ 841 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 842 843 844 845 /* Wifi state machine modes of operation */ 846 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 847 public static final int CONNECT_MODE = 1; 848 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 849 public static final int SCAN_ONLY_MODE = 2; 850 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 851 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 852 853 private static final int SUCCESS = 1; 854 private static final int FAILURE = -1; 855 856 /* Tracks if suspend optimizations need to be disabled by DHCP, 857 * screen or due to high perf mode. 858 * When any of them needs to disable it, we keep the suspend optimizations 859 * disabled 860 */ 861 private int mSuspendOptNeedsDisabled = 0; 862 863 private static final int SUSPEND_DUE_TO_DHCP = 1; 864 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 865 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 866 867 /* Tracks if user has enabled suspend optimizations through settings */ 868 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 869 870 /** 871 * Default framework scan interval in milliseconds. This is used in the scenario in which 872 * wifi chipset does not support background scanning to set up a 873 * periodic wake up scan so that the device can connect to a new access 874 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 875 * override this. 876 */ 877 private final int mDefaultFrameworkScanIntervalMs; 878 879 880 /** 881 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 882 */ 883 private final int mNoNetworksPeriodicScan; 884 885 /** 886 * Supplicant scan interval in milliseconds. 887 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 888 * from the default config if the setting is not set 889 */ 890 private long mSupplicantScanIntervalMs; 891 892 /** 893 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 894 */ 895 private long lastFullBandConnectedTimeMilli; 896 897 /** 898 * time interval to the next full band scan we will perform for 899 * autojoin while connected with screen lit 900 */ 901 private long fullBandConnectedTimeIntervalMilli; 902 903 /** 904 * max time interval to the next full band scan we will perform for 905 * autojoin while connected with screen lit 906 * Max time is 5 minutes 907 */ 908 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 909 910 /** 911 * Minimum time interval between enabling all networks. 912 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 913 * due to enabling every time. We add a threshold to avoid this. 914 */ 915 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 916 private long mLastEnableAllNetworksTime; 917 918 int mRunningBeaconCount = 0; 919 920 /** 921 * Starting and shutting down driver too quick causes problems leading to driver 922 * being in a bad state. Delay driver stop. 923 */ 924 private final int mDriverStopDelayMs; 925 private int mDelayedStopCounter; 926 private boolean mInDelayedStop = false; 927 928 // config option that indicate whether or not to reset country code to default when 929 // cellular radio indicates country code loss 930 private boolean mRevertCountryCodeOnCellularLoss = false; 931 932 private String mDefaultCountryCode; 933 934 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 935 936 // Supplicant doesn't like setting the same country code multiple times (it may drop 937 // currently connected network), so we save the current device set country code here to avoid 938 // redundency 939 private String mDriverSetCountryCode = null; 940 941 /* Default parent state */ 942 private State mDefaultState = new DefaultState(); 943 /* Temporary initial state */ 944 private State mInitialState = new InitialState(); 945 /* Driver loaded, waiting for supplicant to start */ 946 private State mSupplicantStartingState = new SupplicantStartingState(); 947 /* Driver loaded and supplicant ready */ 948 private State mSupplicantStartedState = new SupplicantStartedState(); 949 /* Waiting for supplicant to stop and monitor to exit */ 950 private State mSupplicantStoppingState = new SupplicantStoppingState(); 951 /* Driver start issued, waiting for completed event */ 952 private State mDriverStartingState = new DriverStartingState(); 953 /* Driver started */ 954 private State mDriverStartedState = new DriverStartedState(); 955 /* Wait until p2p is disabled 956 * This is a special state which is entered right after we exit out of DriverStartedState 957 * before transitioning to another state. 958 */ 959 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 960 /* Driver stopping */ 961 private State mDriverStoppingState = new DriverStoppingState(); 962 /* Driver stopped */ 963 private State mDriverStoppedState = new DriverStoppedState(); 964 /* Scan for networks, no connection will be established */ 965 private State mScanModeState = new ScanModeState(); 966 /* Connecting to an access point */ 967 private State mConnectModeState = new ConnectModeState(); 968 /* Connected at 802.11 (L2) level */ 969 private State mL2ConnectedState = new L2ConnectedState(); 970 /* fetching IP after connection to access point (assoc+auth complete) */ 971 private State mObtainingIpState = new ObtainingIpState(); 972 /* Waiting for link quality verification to be complete */ 973 private State mVerifyingLinkState = new VerifyingLinkState(); 974 /* Connected with IP addr */ 975 private State mConnectedState = new ConnectedState(); 976 /* Roaming */ 977 private State mRoamingState = new RoamingState(); 978 /* disconnect issued, waiting for network disconnect confirmation */ 979 private State mDisconnectingState = new DisconnectingState(); 980 /* Network is not connected, supplicant assoc+auth is not complete */ 981 private State mDisconnectedState = new DisconnectedState(); 982 /* Waiting for WPS to be completed*/ 983 private State mWpsRunningState = new WpsRunningState(); 984 985 /* Soft ap is starting up */ 986 private State mSoftApStartingState = new SoftApStartingState(); 987 /* Soft ap is running */ 988 private State mSoftApStartedState = new SoftApStartedState(); 989 /* Soft ap is running and we are waiting for tether notification */ 990 private State mTetheringState = new TetheringState(); 991 /* Soft ap is running and we are tethered through connectivity service */ 992 private State mTetheredState = new TetheredState(); 993 /* Waiting for untether confirmation before stopping soft Ap */ 994 private State mUntetheringState = new UntetheringState(); 995 996 997 998 private class WifiScanListener implements WifiScanner.ScanListener { 999 @Override 1000 public void onSuccess() { 1001 Log.e(TAG, "WifiScanListener onSuccess"); 1002 }; 1003 @Override 1004 public void onFailure(int reason, String description) { 1005 Log.e(TAG, "WifiScanListener onFailure"); 1006 }; 1007 @Override 1008 public void onPeriodChanged(int periodInMs) { 1009 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1010 } 1011 @Override 1012 public void onResults(WifiScanner.ScanData[] results) { 1013 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1014 } 1015 @Override 1016 public void onFullResult(ScanResult fullScanResult) { 1017 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1018 } 1019 1020 WifiScanListener() {} 1021 } 1022 1023 WifiScanListener mWifiScanListener = new WifiScanListener(); 1024 1025 1026 private class TetherStateChange { 1027 ArrayList<String> available; 1028 ArrayList<String> active; 1029 1030 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1031 available = av; 1032 active = ac; 1033 } 1034 } 1035 1036 public static class SimAuthRequestData { 1037 int networkId; 1038 int protocol; 1039 String ssid; 1040 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1041 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1042 String[] data; 1043 } 1044 1045 /** 1046 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1047 * {@link WifiManager#WIFI_STATE_DISABLING}, 1048 * {@link WifiManager#WIFI_STATE_ENABLED}, 1049 * {@link WifiManager#WIFI_STATE_ENABLING}, 1050 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1051 */ 1052 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1053 1054 /** 1055 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1056 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1057 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1058 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1059 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1060 */ 1061 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1062 1063 private static final int SCAN_REQUEST = 0; 1064 private static final String ACTION_START_SCAN = 1065 "com.android.server.WifiManager.action.START_SCAN"; 1066 1067 private static final int PNO_START_REQUEST = 0; 1068 private static final String ACTION_START_PNO = 1069 "com.android.server.WifiManager.action.START_PNO"; 1070 1071 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1072 private static final int DRIVER_STOP_REQUEST = 0; 1073 private static final String ACTION_DELAYED_DRIVER_STOP = 1074 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1075 1076 /** 1077 * Keep track of whether WIFI is running. 1078 */ 1079 private boolean mIsRunning = false; 1080 1081 /** 1082 * Keep track of whether we last told the battery stats we had started. 1083 */ 1084 private boolean mReportedRunning = false; 1085 1086 /** 1087 * Most recently set source of starting WIFI. 1088 */ 1089 private final WorkSource mRunningWifiUids = new WorkSource(); 1090 1091 /** 1092 * The last reported UIDs that were responsible for starting WIFI. 1093 */ 1094 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1095 1096 private final IBatteryStats mBatteryStats; 1097 1098 private String mTcpBufferSizes = null; 1099 1100 // Used for debug and stats gathering 1101 private static int sScanAlarmIntentCount = 0; 1102 1103 final static int frameworkMinScanIntervalSaneValue = 10000; 1104 1105 boolean mPnoEnabled; 1106 boolean mLazyRoamEnabled; 1107 long mGScanStartTimeMilli; 1108 long mGScanPeriodMilli; 1109 1110 public WifiStateMachine(Context context, String wlanInterface, 1111 WifiTrafficPoller trafficPoller) { 1112 super("WifiStateMachine"); 1113 mContext = context; 1114 mInterfaceName = wlanInterface; 1115 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1116 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1117 BatteryStats.SERVICE_NAME)); 1118 1119 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1120 mNwService = INetworkManagementService.Stub.asInterface(b); 1121 1122 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1123 PackageManager.FEATURE_WIFI_DIRECT); 1124 1125 mWifiNative = new WifiNative(mInterfaceName, mContext); 1126 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1127 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1128 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1129 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1130 1131 boolean enableFirmwareLogs = mContext.getResources().getBoolean( 1132 R.bool.config_wifi_enable_wifi_firmware_debugging); 1133 1134 if (enableFirmwareLogs) { 1135 mWifiLogger = new WifiLogger(this); 1136 } else { 1137 mWifiLogger = new DummyWifiLogger(); 1138 } 1139 1140 mWifiInfo = new WifiInfo(); 1141 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1142 getHandler()); 1143 mLinkProperties = new LinkProperties(); 1144 1145 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1146 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1147 1148 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1149 1150 mNetworkInfo.setIsAvailable(false); 1151 mLastBssid = null; 1152 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1153 mLastSignalLevel = -1; 1154 1155 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1156 public void update() { 1157 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1158 } 1159 }); 1160 try { 1161 mNwService.registerObserver(mNetlinkTracker); 1162 } catch (RemoteException e) { 1163 loge("Couldn't register netlink tracker: " + e.toString()); 1164 } 1165 1166 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1167 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1168 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1169 1170 // Make sure the interval is not configured less than 10 seconds 1171 int period = mContext.getResources().getInteger( 1172 R.integer.config_wifi_framework_scan_interval); 1173 if (period < frameworkMinScanIntervalSaneValue) { 1174 period = frameworkMinScanIntervalSaneValue; 1175 } 1176 mDefaultFrameworkScanIntervalMs = period; 1177 1178 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1179 R.integer.config_wifi_no_network_periodic_scan_interval); 1180 1181 mDriverStopDelayMs = mContext.getResources().getInteger( 1182 R.integer.config_wifi_driver_stop_delay); 1183 1184 mBackgroundScanSupported = mContext.getResources().getBoolean( 1185 R.bool.config_wifi_background_scan_support); 1186 1187 mPrimaryDeviceType = mContext.getResources().getString( 1188 R.string.config_wifi_p2p_device_type); 1189 1190 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1191 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1192 1193 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1194 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1195 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1196 } 1197 1198 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1199 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1200 "but there is no default country code!! Resetting ..."); 1201 mRevertCountryCodeOnCellularLoss = false; 1202 } else if (mRevertCountryCodeOnCellularLoss) { 1203 logd("initializing with and will revert to " + mDefaultCountryCode + " on MCC loss"); 1204 } 1205 1206 if (mRevertCountryCodeOnCellularLoss) { 1207 Settings.Global.putString(mContext.getContentResolver(), 1208 Settings.Global.WIFI_COUNTRY_CODE, mDefaultCountryCode); 1209 } 1210 1211 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1212 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1213 1214 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1215 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1216 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1217 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1218 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1219 // TODO - needs to be a bit more dynamic 1220 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1221 1222 mContext.registerReceiver( 1223 new BroadcastReceiver() { 1224 @Override 1225 public void onReceive(Context context, Intent intent) { 1226 ArrayList<String> available = intent.getStringArrayListExtra( 1227 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1228 ArrayList<String> active = intent.getStringArrayListExtra( 1229 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1230 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1231 } 1232 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1233 1234 mContext.registerReceiver( 1235 new BroadcastReceiver() { 1236 @Override 1237 public void onReceive(Context context, Intent intent) { 1238 sScanAlarmIntentCount++; // Used for debug only 1239 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1240 if (VDBG) 1241 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1242 } 1243 }, 1244 new IntentFilter(ACTION_START_SCAN)); 1245 1246 mContext.registerReceiver( 1247 new BroadcastReceiver() { 1248 @Override 1249 public void onReceive(Context context, Intent intent) { 1250 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1251 mRestartAutoJoinOffloadCounter, "pno alarm"); 1252 if (DBG) 1253 logd("PNO START ALARM sent"); 1254 } 1255 }, 1256 new IntentFilter(ACTION_START_PNO)); 1257 1258 1259 IntentFilter filter = new IntentFilter(); 1260 filter.addAction(Intent.ACTION_SCREEN_ON); 1261 filter.addAction(Intent.ACTION_SCREEN_OFF); 1262 mContext.registerReceiver( 1263 new BroadcastReceiver() { 1264 @Override 1265 public void onReceive(Context context, Intent intent) { 1266 String action = intent.getAction(); 1267 1268 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1269 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1270 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1271 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1272 } 1273 } 1274 }, filter); 1275 1276 mContext.registerReceiver( 1277 new BroadcastReceiver() { 1278 @Override 1279 public void onReceive(Context context, Intent intent) { 1280 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1281 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1282 } 1283 }, 1284 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1285 1286 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1287 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1288 new ContentObserver(getHandler()) { 1289 @Override 1290 public void onChange(boolean selfChange) { 1291 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1292 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1293 } 1294 }); 1295 1296 mContext.registerReceiver( 1297 new BroadcastReceiver() { 1298 @Override 1299 public void onReceive(Context context, Intent intent) { 1300 sendMessage(CMD_BOOT_COMPLETED); 1301 } 1302 }, 1303 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1304 1305 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1306 1307 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1308 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1309 1310 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1311 mSuspendWakeLock.setReferenceCounted(false); 1312 1313 mTcpBufferSizes = mContext.getResources().getString( 1314 com.android.internal.R.string.config_wifi_tcp_buffers); 1315 1316 addState(mDefaultState); 1317 addState(mInitialState, mDefaultState); 1318 addState(mSupplicantStartingState, mDefaultState); 1319 addState(mSupplicantStartedState, mDefaultState); 1320 addState(mDriverStartingState, mSupplicantStartedState); 1321 addState(mDriverStartedState, mSupplicantStartedState); 1322 addState(mScanModeState, mDriverStartedState); 1323 addState(mConnectModeState, mDriverStartedState); 1324 addState(mL2ConnectedState, mConnectModeState); 1325 addState(mObtainingIpState, mL2ConnectedState); 1326 addState(mVerifyingLinkState, mL2ConnectedState); 1327 addState(mConnectedState, mL2ConnectedState); 1328 addState(mRoamingState, mL2ConnectedState); 1329 addState(mDisconnectingState, mConnectModeState); 1330 addState(mDisconnectedState, mConnectModeState); 1331 addState(mWpsRunningState, mConnectModeState); 1332 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1333 addState(mDriverStoppingState, mSupplicantStartedState); 1334 addState(mDriverStoppedState, mSupplicantStartedState); 1335 addState(mSupplicantStoppingState, mDefaultState); 1336 addState(mSoftApStartingState, mDefaultState); 1337 addState(mSoftApStartedState, mDefaultState); 1338 addState(mTetheringState, mSoftApStartedState); 1339 addState(mTetheredState, mSoftApStartedState); 1340 addState(mUntetheringState, mSoftApStartedState); 1341 1342 setInitialState(mInitialState); 1343 1344 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1345 setLogOnlyTransitions(false); 1346 if (VDBG) setDbg(true); 1347 1348 //start the state machine 1349 start(); 1350 1351 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1352 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1353 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1354 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1355 } 1356 1357 1358 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1359 Intent intent = new Intent(action, null); 1360 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1361 // TODO: Find the correct value so this is not hard coded 1362 intent.setPackage("android"); 1363 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1364 } 1365 1366 private int mVerboseLoggingLevel = 0; 1367 1368 int getVerboseLoggingLevel() { 1369 return mVerboseLoggingLevel; 1370 } 1371 1372 void enableVerboseLogging(int verbose) { 1373 mVerboseLoggingLevel = verbose; 1374 if (verbose > 0) { 1375 DBG = true; 1376 VDBG = true; 1377 PDBG = true; 1378 mLogMessages = true; 1379 mWifiNative.setSupplicantLogLevel("DEBUG"); 1380 } else { 1381 DBG = false; 1382 VDBG = false; 1383 PDBG = false; 1384 mLogMessages = false; 1385 mWifiNative.setSupplicantLogLevel("INFO"); 1386 } 1387 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1388 mWifiAutoJoinController.enableVerboseLogging(verbose); 1389 mWifiMonitor.enableVerboseLogging(verbose); 1390 mWifiNative.enableVerboseLogging(verbose); 1391 mWifiConfigStore.enableVerboseLogging(verbose); 1392 mSupplicantStateTracker.enableVerboseLogging(verbose); 1393 } 1394 1395 public void setHalBasedAutojoinOffload(int enabled) { 1396 // Shoult be used for debug only, triggered form developper settings 1397 // enabling HAl based PNO dynamically is not safe and not a normal operation 1398 mHalBasedPnoEnableInDevSettings = enabled > 0; 1399 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1400 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1401 sendMessage(CMD_DISCONNECT); 1402 } 1403 1404 int getHalBasedAutojoinOffload() { 1405 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1406 } 1407 1408 boolean useHalBasedAutoJoinOffload() { 1409 // all three settings need to be true: 1410 // - developper settings switch 1411 // - driver support 1412 // - config option 1413 return mHalBasedPnoEnableInDevSettings 1414 && mHalBasedPnoDriverSupported 1415 && mWifiConfigStore.enableHalBasedPno.get(); 1416 } 1417 1418 boolean allowFullBandScanAndAssociated() { 1419 1420 if (!getEnableAutoJoinWhenAssociated()) { 1421 if (DBG) { 1422 Log.e(TAG, "allowFullBandScanAndAssociated: " 1423 + " enableAutoJoinWhenAssociated : disallow"); 1424 } 1425 return false; 1426 } 1427 1428 if (mWifiInfo.txSuccessRate > 1429 mWifiConfigStore.maxTxPacketForFullScans 1430 || mWifiInfo.rxSuccessRate > 1431 mWifiConfigStore.maxRxPacketForFullScans) { 1432 if (DBG) { 1433 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1434 + mWifiInfo.txSuccessRate + " rx " 1435 + mWifiInfo.rxSuccessRate 1436 + " allow scan with traffic " + getAllowScansWithTraffic()); 1437 } 1438 // Too much traffic at the interface, hence no full band scan 1439 if (getAllowScansWithTraffic() == 0) { 1440 return false; 1441 } 1442 } 1443 1444 if (getCurrentState() != mConnectedState) { 1445 if (DBG) { 1446 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1447 } 1448 return false; 1449 } 1450 1451 return true; 1452 } 1453 1454 long mLastScanPermissionUpdate = 0; 1455 boolean mConnectedModeGScanOffloadStarted = false; 1456 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1457 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1458 // we want to throttle the GScan Stop->Start transition 1459 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1460 void updateAssociatedScanPermission() { 1461 1462 if (useHalBasedAutoJoinOffload()) { 1463 boolean allowed = allowFullBandScanAndAssociated(); 1464 1465 long now = System.currentTimeMillis(); 1466 if (mConnectedModeGScanOffloadStarted && !allowed) { 1467 if (DBG) { 1468 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1469 } 1470 stopPnoOffload(); 1471 stopGScan(" useHalBasedAutoJoinOffload"); 1472 } 1473 if (!mConnectedModeGScanOffloadStarted && allowed) { 1474 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1475 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1476 // to look for 5GHz BSSIDs and better networks 1477 if (DBG) { 1478 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1479 } 1480 startGScanConnectedModeOffload("updatePermission " 1481 + (now - mLastScanPermissionUpdate) + "ms"); 1482 mLastScanPermissionUpdate = now; 1483 } 1484 } 1485 } 1486 } 1487 1488 private int mAggressiveHandover = 0; 1489 1490 int getAggressiveHandover() { 1491 return mAggressiveHandover; 1492 } 1493 1494 void enableAggressiveHandover(int enabled) { 1495 mAggressiveHandover = enabled; 1496 } 1497 1498 public void clearANQPCache() { 1499 mWifiConfigStore.trimANQPCache(true); 1500 } 1501 1502 public void setAllowScansWithTraffic(int enabled) { 1503 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1504 } 1505 1506 public int getAllowScansWithTraffic() { 1507 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1508 } 1509 1510 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1511 boolean old_state = getEnableAutoJoinWhenAssociated(); 1512 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1513 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1514 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1515 null); 1516 } 1517 return true; 1518 } 1519 1520 public boolean getEnableAutoJoinWhenAssociated() { 1521 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1522 } 1523 /* 1524 * 1525 * Framework scan control 1526 */ 1527 1528 private boolean mAlarmEnabled = false; 1529 1530 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1531 1532 private void setScanAlarm(boolean enabled) { 1533 if (PDBG) { 1534 String state; 1535 if (enabled) state = "enabled"; else state = "disabled"; 1536 logd("setScanAlarm " + state 1537 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1538 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1539 } 1540 if (mBackgroundScanSupported == false) { 1541 // Scan alarm is only used for background scans if they are not 1542 // offloaded to the wifi chipset, hence enable the scan alarm 1543 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1544 enabled = true; 1545 } 1546 1547 if (enabled == mAlarmEnabled) return; 1548 if (enabled) { 1549 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1550 /* going to wake up the host processor to look for access points */ 1551 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1552 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1553 mScanIntent); 1554 mAlarmEnabled = true; 1555 } else { 1556 mAlarmManager.cancel(mScanIntent); 1557 mAlarmEnabled = false; 1558 } 1559 } 1560 1561 private void cancelDelayedScan() { 1562 mDelayedScanCounter.incrementAndGet(); 1563 } 1564 1565 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1566 ScanSettings settings, WorkSource workSource) { 1567 1568 if (counter != mDelayedScanCounter.get()) { 1569 return false; 1570 } 1571 if (restart) 1572 startDelayedScan(milli, settings, workSource); 1573 return true; 1574 } 1575 1576 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1577 if (milli <= 0) return; 1578 /** 1579 * The cases where the scan alarm should be run are : 1580 * - DisconnectedState && screenOn => used delayed timer 1581 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1582 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1583 * - ConnectedState && screenOn => used delayed timer 1584 */ 1585 1586 mDelayedScanCounter.incrementAndGet(); 1587 if (mScreenOn && 1588 (getCurrentState() == mDisconnectedState 1589 || getCurrentState() == mConnectedState)) { 1590 Bundle bundle = new Bundle(); 1591 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1592 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1593 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1594 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1595 mDelayedScanCounter.get(), bundle, milli); 1596 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1597 } else if (mBackgroundScanSupported == false 1598 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1599 setScanAlarm(true); 1600 if (DBG) logd("startDelayedScan start scan alarm -> " 1601 + mDelayedScanCounter + " milli " + milli); 1602 } else { 1603 if (DBG) logd("startDelayedScan unhandled -> " 1604 + mDelayedScanCounter + " milli " + milli); 1605 } 1606 } 1607 1608 private boolean setRandomMacOui() { 1609 String oui = mContext.getResources().getString( 1610 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1611 String[] ouiParts = oui.split("-"); 1612 byte[] ouiBytes = new byte[3]; 1613 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1614 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1615 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1616 1617 logd("Setting OUI to " + oui); 1618 return mWifiNative.setScanningMacOui(ouiBytes); 1619 } 1620 1621 /** 1622 * ****************************************************** 1623 * Methods exposed for public use 1624 * ****************************************************** 1625 */ 1626 1627 public Messenger getMessenger() { 1628 return new Messenger(getHandler()); 1629 } 1630 1631 public WifiMonitor getWifiMonitor() { 1632 return mWifiMonitor; 1633 } 1634 1635 /** 1636 * TODO: doc 1637 */ 1638 public boolean syncPingSupplicant(AsyncChannel channel) { 1639 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1640 boolean result = (resultMsg.arg1 != FAILURE); 1641 resultMsg.recycle(); 1642 return result; 1643 } 1644 1645 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1646 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1647 List<WifiChannel> list = null; 1648 if (resultMsg.obj != null) { 1649 list = new ArrayList<WifiChannel>(); 1650 String freqs = (String) resultMsg.obj; 1651 String[] lines = freqs.split("\n"); 1652 for (String line : lines) 1653 if (line.contains("MHz")) { 1654 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1655 WifiChannel c = new WifiChannel(); 1656 String[] prop = line.split(" "); 1657 if (prop.length < 5) continue; 1658 try { 1659 c.channelNum = Integer.parseInt(prop[1]); 1660 c.freqMHz = Integer.parseInt(prop[3]); 1661 } catch (NumberFormatException e) { 1662 } 1663 c.isDFS = line.contains("(DFS)"); 1664 list.add(c); 1665 } else if (line.contains("Mode[B] Channels:")) { 1666 // B channels are the same as G channels, skipped 1667 break; 1668 } 1669 } 1670 resultMsg.recycle(); 1671 return (list != null && list.size() > 0) ? list : null; 1672 } 1673 1674 /** 1675 * When settings allowing making use of untrusted networks change, trigger a scan 1676 * so as to kick of autojoin. 1677 */ 1678 public void startScanForUntrustedSettingChange() { 1679 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1680 } 1681 1682 /** 1683 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1684 * given to callingUid. 1685 * 1686 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1687 * workSource is specified. 1688 * @param workSource If not null, blame is given to workSource. 1689 * @param settings Scan settings, see {@link ScanSettings}. 1690 */ 1691 public void startScan(int callingUid, int scanCounter, 1692 ScanSettings settings, WorkSource workSource) { 1693 Bundle bundle = new Bundle(); 1694 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1695 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1696 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1697 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1698 } 1699 1700 // called from BroadcastListener 1701 1702 /** 1703 * Start reading new scan data 1704 * Data comes in as: 1705 * "scancount=5\n" 1706 * "nextcount=5\n" 1707 * "apcount=3\n" 1708 * "trunc\n" (optional) 1709 * "bssid=...\n" 1710 * "ssid=...\n" 1711 * "freq=...\n" (in Mhz) 1712 * "level=...\n" 1713 * "dist=...\n" (in cm) 1714 * "distsd=...\n" (standard deviation, in cm) 1715 * "====" 1716 * "bssid=...\n" 1717 * etc 1718 * "====" 1719 * "bssid=...\n" 1720 * etc 1721 * "%%%%" 1722 * "apcount=2\n" 1723 * "bssid=...\n" 1724 * etc 1725 * "%%%% 1726 * etc 1727 * "----" 1728 */ 1729 private final static boolean DEBUG_PARSE = false; 1730 1731 private long mDisconnectedTimeStamp = 0; 1732 1733 public long getDisconnectedTimeMilli() { 1734 if (getCurrentState() == mDisconnectedState 1735 && mDisconnectedTimeStamp != 0) { 1736 long now_ms = System.currentTimeMillis(); 1737 return now_ms - mDisconnectedTimeStamp; 1738 } 1739 return 0; 1740 } 1741 1742 // Keeping track of scan requests 1743 private long lastStartScanTimeStamp = 0; 1744 private long lastScanDuration = 0; 1745 // Last connect attempt is used to prevent scan requests: 1746 // - for a period of 10 seconds after attempting to connect 1747 private long lastConnectAttemptTimestamp = 0; 1748 private String lastScanFreqs = null; 1749 1750 // For debugging, keep track of last message status handling 1751 // TODO, find an equivalent mechanism as part of parent class 1752 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1753 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1754 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1755 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1756 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1757 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1758 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1759 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1760 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1761 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1762 1763 private int messageHandlingStatus = 0; 1764 1765 //TODO: this is used only to track connection attempts, however the link state and packet per 1766 //TODO: second logic should be folded into that 1767 private boolean checkOrDeferScanAllowed(Message msg) { 1768 long now = System.currentTimeMillis(); 1769 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1770 Message dmsg = Message.obtain(msg); 1771 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1772 return false; 1773 } 1774 return true; 1775 } 1776 1777 private int mOnTime = 0; 1778 private int mTxTime = 0; 1779 private int mRxTime = 0; 1780 private int mOnTimeStartScan = 0; 1781 private int mTxTimeStartScan = 0; 1782 private int mRxTimeStartScan = 0; 1783 private int mOnTimeScan = 0; 1784 private int mTxTimeScan = 0; 1785 private int mRxTimeScan = 0; 1786 private int mOnTimeThisScan = 0; 1787 private int mTxTimeThisScan = 0; 1788 private int mRxTimeThisScan = 0; 1789 1790 private int mOnTimeScreenStateChange = 0; 1791 private int mOnTimeAtLastReport = 0; 1792 private long lastOntimeReportTimeStamp = 0; 1793 private long lastScreenStateChangeTimeStamp = 0; 1794 private int mOnTimeLastReport = 0; 1795 private int mTxTimeLastReport = 0; 1796 private int mRxTimeLastReport = 0; 1797 1798 private long lastLinkLayerStatsUpdate = 0; 1799 1800 String reportOnTime() { 1801 long now = System.currentTimeMillis(); 1802 StringBuilder sb = new StringBuilder(); 1803 // Report stats since last report 1804 int on = mOnTime - mOnTimeLastReport; 1805 mOnTimeLastReport = mOnTime; 1806 int tx = mTxTime - mTxTimeLastReport; 1807 mTxTimeLastReport = mTxTime; 1808 int rx = mRxTime - mRxTimeLastReport; 1809 mRxTimeLastReport = mRxTime; 1810 int period = (int) (now - lastOntimeReportTimeStamp); 1811 lastOntimeReportTimeStamp = now; 1812 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1813 // Report stats since Screen State Changed 1814 on = mOnTime - mOnTimeScreenStateChange; 1815 period = (int) (now - lastScreenStateChangeTimeStamp); 1816 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1817 return sb.toString(); 1818 } 1819 1820 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1821 WifiLinkLayerStats stats = null; 1822 if (mWifiLinkLayerStatsSupported > 0) { 1823 String name = "wlan0"; 1824 stats = mWifiNative.getWifiLinkLayerStats(name); 1825 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1826 mWifiLinkLayerStatsSupported -= 1; 1827 } else if (stats != null) { 1828 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1829 mOnTime = stats.on_time; 1830 mTxTime = stats.tx_time; 1831 mRxTime = stats.rx_time; 1832 mRunningBeaconCount = stats.beacon_rx; 1833 } 1834 } 1835 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1836 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1837 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1838 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1839 } else { 1840 mWifiInfo.updatePacketRates(stats); 1841 } 1842 if (useHalBasedAutoJoinOffload()) { 1843 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1844 } 1845 return stats; 1846 } 1847 1848 void startRadioScanStats() { 1849 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1850 if (stats != null) { 1851 mOnTimeStartScan = stats.on_time; 1852 mTxTimeStartScan = stats.tx_time; 1853 mRxTimeStartScan = stats.rx_time; 1854 mOnTime = stats.on_time; 1855 mTxTime = stats.tx_time; 1856 mRxTime = stats.rx_time; 1857 } 1858 } 1859 1860 void closeRadioScanStats() { 1861 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1862 if (stats != null) { 1863 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1864 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1865 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1866 mOnTimeScan += mOnTimeThisScan; 1867 mTxTimeScan += mTxTimeThisScan; 1868 mRxTimeScan += mRxTimeThisScan; 1869 } 1870 } 1871 1872 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1873 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1874 if (ret != 0) { 1875 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1876 "): hardware error " + ret); 1877 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1878 } else { 1879 return ConnectivityManager.PacketKeepalive.SUCCESS; 1880 } 1881 } 1882 1883 int stopWifiIPPacketOffload(int slot) { 1884 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1885 if (ret != 0) { 1886 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1887 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1888 } else { 1889 return ConnectivityManager.PacketKeepalive.SUCCESS; 1890 } 1891 } 1892 1893 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1894 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1895 } 1896 1897 int stopRssiMonitoringOffload() { 1898 return mWifiNative.stopRssiMonitoring(); 1899 } 1900 1901 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1902 private void noteScanStart(int callingUid, WorkSource workSource) { 1903 if (lastStartScanTimeStamp != 0) { 1904 noteScanEnd(); 1905 } 1906 long now = System.currentTimeMillis(); 1907 lastStartScanTimeStamp = now; 1908 lastScanDuration = 0; 1909 if (DBG) { 1910 String ts = String.format("[%,d ms]", now); 1911 if (workSource != null) { 1912 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1913 + " uid " + Integer.toString(callingUid)); 1914 } else { 1915 if (DBG) logd(ts + " noteScanstart no scan source" 1916 + " uid " + Integer.toString(callingUid)); 1917 } 1918 } 1919 startRadioScanStats(); 1920 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1921 && callingUid != SCAN_ALARM_SOURCE) 1922 || workSource != null)) { 1923 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1924 1925 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1926 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1927 mScanWorkSource = new WorkSource(Process.WIFI_UID); 1928 } 1929 1930 try { 1931 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1932 } catch (RemoteException e) { 1933 log(e.toString()); 1934 } 1935 } 1936 } 1937 1938 private void noteScanEnd() { 1939 closeRadioScanStats(); 1940 long now = System.currentTimeMillis(); 1941 if (lastStartScanTimeStamp != 0) { 1942 lastScanDuration = now - lastStartScanTimeStamp; 1943 } 1944 lastStartScanTimeStamp = 0; 1945 if (DBG) { 1946 String ts = String.format("[%,d ms]", now); 1947 if (mScanWorkSource != null) 1948 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 1949 + " onTime=" + mOnTimeThisScan); 1950 else 1951 logd(ts + " noteScanEnd no scan source" 1952 + " onTime=" + mOnTimeThisScan); 1953 } 1954 if (mScanWorkSource != null) { 1955 try { 1956 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1957 } catch (RemoteException e) { 1958 log(e.toString()); 1959 } finally { 1960 mScanWorkSource = null; 1961 } 1962 } 1963 } 1964 1965 private void handleScanRequest(int type, Message message) { 1966 ScanSettings settings = null; 1967 WorkSource workSource = null; 1968 1969 // unbundle parameters 1970 Bundle bundle = (Bundle) message.obj; 1971 1972 if (bundle != null) { 1973 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1974 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1975 } 1976 1977 // parse scan settings 1978 String freqs = null; 1979 if (settings != null && settings.channelSet != null) { 1980 StringBuilder sb = new StringBuilder(); 1981 boolean first = true; 1982 for (WifiChannel channel : settings.channelSet) { 1983 if (!first) sb.append(','); 1984 else first = false; 1985 sb.append(channel.freqMHz); 1986 } 1987 freqs = sb.toString(); 1988 } 1989 1990 // call wifi native to start the scan 1991 if (startScanNative(type, freqs)) { 1992 // only count battery consumption if scan request is accepted 1993 noteScanStart(message.arg1, workSource); 1994 // a full scan covers everything, clearing scan request buffer 1995 if (freqs == null) 1996 mBufferedScanMsg.clear(); 1997 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1998 if (workSource != null) { 1999 // External worksource was passed along the scan request, 2000 // hence always send a broadcast 2001 mSendScanResultsBroadcast = true; 2002 } 2003 return; 2004 } 2005 2006 // if reach here, scan request is rejected 2007 2008 if (!mIsScanOngoing) { 2009 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2010 2011 // discard this request and pop up the next one 2012 if (mBufferedScanMsg.size() > 0) { 2013 sendMessage(mBufferedScanMsg.remove()); 2014 } 2015 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2016 } else if (!mIsFullScanOngoing) { 2017 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2018 // buffer the scan request to make sure specified channels will be scanned eventually 2019 if (freqs == null) 2020 mBufferedScanMsg.clear(); 2021 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2022 Message msg = obtainMessage(CMD_START_SCAN, 2023 message.arg1, message.arg2, bundle); 2024 mBufferedScanMsg.add(msg); 2025 } else { 2026 // if too many requests in buffer, combine them into a single full scan 2027 bundle = new Bundle(); 2028 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2029 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2030 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2031 mBufferedScanMsg.clear(); 2032 mBufferedScanMsg.add(msg); 2033 } 2034 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2035 } else { 2036 // mIsScanOngoing and mIsFullScanOngoing 2037 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2038 } 2039 } 2040 2041 2042 /** 2043 * return true iff scan request is accepted 2044 */ 2045 private boolean startScanNative(int type, String freqs) { 2046 if (mWifiNative.scan(type, freqs)) { 2047 mIsScanOngoing = true; 2048 mIsFullScanOngoing = (freqs == null); 2049 lastScanFreqs = freqs; 2050 return true; 2051 } 2052 return false; 2053 } 2054 2055 /** 2056 * TODO: doc 2057 */ 2058 public void setSupplicantRunning(boolean enable) { 2059 if (enable) { 2060 sendMessage(CMD_START_SUPPLICANT); 2061 } else { 2062 sendMessage(CMD_STOP_SUPPLICANT); 2063 } 2064 } 2065 2066 /** 2067 * TODO: doc 2068 */ 2069 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2070 if (enable) { 2071 sendMessage(CMD_START_AP, wifiConfig); 2072 } else { 2073 sendMessage(CMD_STOP_AP); 2074 } 2075 } 2076 2077 public void setWifiApConfiguration(WifiConfiguration config) { 2078 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2079 } 2080 2081 public WifiConfiguration syncGetWifiApConfiguration() { 2082 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2083 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2084 resultMsg.recycle(); 2085 return ret; 2086 } 2087 2088 /** 2089 * TODO: doc 2090 */ 2091 public int syncGetWifiState() { 2092 return mWifiState.get(); 2093 } 2094 2095 /** 2096 * TODO: doc 2097 */ 2098 public String syncGetWifiStateByName() { 2099 switch (mWifiState.get()) { 2100 case WIFI_STATE_DISABLING: 2101 return "disabling"; 2102 case WIFI_STATE_DISABLED: 2103 return "disabled"; 2104 case WIFI_STATE_ENABLING: 2105 return "enabling"; 2106 case WIFI_STATE_ENABLED: 2107 return "enabled"; 2108 case WIFI_STATE_UNKNOWN: 2109 return "unknown state"; 2110 default: 2111 return "[invalid state]"; 2112 } 2113 } 2114 2115 /** 2116 * TODO: doc 2117 */ 2118 public int syncGetWifiApState() { 2119 return mWifiApState.get(); 2120 } 2121 2122 /** 2123 * TODO: doc 2124 */ 2125 public String syncGetWifiApStateByName() { 2126 switch (mWifiApState.get()) { 2127 case WIFI_AP_STATE_DISABLING: 2128 return "disabling"; 2129 case WIFI_AP_STATE_DISABLED: 2130 return "disabled"; 2131 case WIFI_AP_STATE_ENABLING: 2132 return "enabling"; 2133 case WIFI_AP_STATE_ENABLED: 2134 return "enabled"; 2135 case WIFI_AP_STATE_FAILED: 2136 return "failed"; 2137 default: 2138 return "[invalid state]"; 2139 } 2140 } 2141 2142 /** 2143 * Get status information for the current connection, if any. 2144 * 2145 * @return a {@link WifiInfo} object containing information about the current connection 2146 */ 2147 public WifiInfo syncRequestConnectionInfo() { 2148 return getWiFiInfoForUid(Binder.getCallingUid()); 2149 } 2150 2151 public DhcpResults syncGetDhcpResults() { 2152 synchronized (mDhcpResultsLock) { 2153 return new DhcpResults(mDhcpResults); 2154 } 2155 } 2156 2157 /** 2158 * TODO: doc 2159 */ 2160 public void setDriverStart(boolean enable) { 2161 if (enable) { 2162 sendMessage(CMD_START_DRIVER); 2163 } else { 2164 sendMessage(CMD_STOP_DRIVER); 2165 } 2166 } 2167 2168 /** 2169 * TODO: doc 2170 */ 2171 public void setOperationalMode(int mode) { 2172 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2173 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2174 } 2175 2176 /** 2177 * TODO: doc 2178 */ 2179 public List<ScanResult> syncGetScanResultsList() { 2180 synchronized (mScanResultCache) { 2181 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2182 for (ScanDetail result : mScanResults) { 2183 scanList.add(new ScanResult(result.getScanResult())); 2184 } 2185 return scanList; 2186 } 2187 } 2188 2189 public void disableEphemeralNetwork(String SSID) { 2190 if (SSID != null) { 2191 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2192 } 2193 } 2194 2195 /** 2196 * Get unsynchronized pointer to scan result list 2197 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2198 */ 2199 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2200 return mScanResults; 2201 } 2202 2203 /** 2204 * Disconnect from Access Point 2205 */ 2206 public void disconnectCommand() { 2207 sendMessage(CMD_DISCONNECT); 2208 } 2209 2210 public void disconnectCommand(int uid, int reason) { 2211 sendMessage(CMD_DISCONNECT, uid, reason); 2212 } 2213 2214 /** 2215 * Initiate a reconnection to AP 2216 */ 2217 public void reconnectCommand() { 2218 sendMessage(CMD_RECONNECT); 2219 } 2220 2221 /** 2222 * Initiate a re-association to AP 2223 */ 2224 public void reassociateCommand() { 2225 sendMessage(CMD_REASSOCIATE); 2226 } 2227 2228 /** 2229 * Reload networks and then reconnect; helps load correct data for TLS networks 2230 */ 2231 2232 public void reloadTlsNetworksAndReconnect() { 2233 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2234 } 2235 2236 /** 2237 * Add a network synchronously 2238 * 2239 * @return network id of the new network 2240 */ 2241 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2242 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2243 int result = resultMsg.arg1; 2244 resultMsg.recycle(); 2245 return result; 2246 } 2247 2248 /** 2249 * Get configured networks synchronously 2250 * 2251 * @param channel 2252 * @return 2253 */ 2254 2255 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2256 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2257 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2258 resultMsg.recycle(); 2259 return result; 2260 } 2261 2262 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2263 Message resultMsg = channel.sendMessageSynchronously( 2264 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2265 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2266 resultMsg.recycle(); 2267 return result; 2268 } 2269 2270 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2271 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2272 return (WifiConfiguration) resultMsg.obj; 2273 } 2274 2275 /** 2276 * Get connection statistics synchronously 2277 * 2278 * @param channel 2279 * @return 2280 */ 2281 2282 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2283 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2284 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2285 resultMsg.recycle(); 2286 return result; 2287 } 2288 2289 /** 2290 * Get adaptors synchronously 2291 */ 2292 2293 public int syncGetSupportedFeatures(AsyncChannel channel) { 2294 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2295 int supportedFeatureSet = resultMsg.arg1; 2296 resultMsg.recycle(); 2297 return supportedFeatureSet; 2298 } 2299 2300 /** 2301 * Get link layers stats for adapter synchronously 2302 */ 2303 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2304 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2305 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2306 resultMsg.recycle(); 2307 return result; 2308 } 2309 2310 /** 2311 * Delete a network 2312 * 2313 * @param networkId id of the network to be removed 2314 */ 2315 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2316 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2317 boolean result = (resultMsg.arg1 != FAILURE); 2318 resultMsg.recycle(); 2319 return result; 2320 } 2321 2322 /** 2323 * Enable a network 2324 * 2325 * @param netId network id of the network 2326 * @param disableOthers true, if all other networks have to be disabled 2327 * @return {@code true} if the operation succeeds, {@code false} otherwise 2328 */ 2329 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2330 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2331 disableOthers ? 1 : 0); 2332 boolean result = (resultMsg.arg1 != FAILURE); 2333 resultMsg.recycle(); 2334 return result; 2335 } 2336 2337 /** 2338 * Disable a network 2339 * 2340 * @param netId network id of the network 2341 * @return {@code true} if the operation succeeds, {@code false} otherwise 2342 */ 2343 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2344 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2345 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2346 resultMsg.recycle(); 2347 return result; 2348 } 2349 2350 /** 2351 * Retrieves a WPS-NFC configuration token for the specified network 2352 * 2353 * @return a hex string representation of the WPS-NFC configuration token 2354 */ 2355 public String syncGetWpsNfcConfigurationToken(int netId) { 2356 return mWifiNative.getNfcWpsConfigurationToken(netId); 2357 } 2358 2359 void enableBackgroundScan(boolean enable) { 2360 if (enable) { 2361 mWifiConfigStore.enableAllNetworks(); 2362 } 2363 boolean ret = mWifiNative.enableBackgroundScan(enable); 2364 if (ret) { 2365 mLegacyPnoEnabled = enable; 2366 } else { 2367 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2368 } 2369 } 2370 2371 /** 2372 * Blacklist a BSSID. This will avoid the AP if there are 2373 * alternate APs to connect 2374 * 2375 * @param bssid BSSID of the network 2376 */ 2377 public void addToBlacklist(String bssid) { 2378 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2379 } 2380 2381 /** 2382 * Clear the blacklist list 2383 */ 2384 public void clearBlacklist() { 2385 sendMessage(CMD_CLEAR_BLACKLIST); 2386 } 2387 2388 public void enableRssiPolling(boolean enabled) { 2389 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2390 } 2391 2392 public void enableAllNetworks() { 2393 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2394 } 2395 2396 /** 2397 * Start filtering Multicast v4 packets 2398 */ 2399 public void startFilteringMulticastV4Packets() { 2400 mFilteringMulticastV4Packets.set(true); 2401 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2402 } 2403 2404 /** 2405 * Stop filtering Multicast v4 packets 2406 */ 2407 public void stopFilteringMulticastV4Packets() { 2408 mFilteringMulticastV4Packets.set(false); 2409 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2410 } 2411 2412 /** 2413 * Start filtering Multicast v4 packets 2414 */ 2415 public void startFilteringMulticastV6Packets() { 2416 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2417 } 2418 2419 /** 2420 * Stop filtering Multicast v4 packets 2421 */ 2422 public void stopFilteringMulticastV6Packets() { 2423 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2424 } 2425 2426 /** 2427 * Set high performance mode of operation. 2428 * Enabling would set active power mode and disable suspend optimizations; 2429 * disabling would set auto power mode and enable suspend optimizations 2430 * 2431 * @param enable true if enable, false otherwise 2432 */ 2433 public void setHighPerfModeEnabled(boolean enable) { 2434 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2435 } 2436 2437 /** 2438 * Set the country code 2439 * 2440 * @param countryCode following ISO 3166 format 2441 * @param persist {@code true} if the setting should be remembered. 2442 */ 2443 public synchronized void setCountryCode(String countryCode, boolean persist) { 2444 // If it's a good country code, apply after the current 2445 // wifi connection is terminated; ignore resetting of code 2446 // for now (it is unclear what the chipset should do when 2447 // country code is reset) 2448 2449 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2450 // else only when the new country code is different from the current one to set 2451 2452 if (TextUtils.isEmpty(countryCode)) { 2453 if (DBG) log("Ignoring resetting of country code"); 2454 } else { 2455 int countryCodeSequence = mCountryCodeSequence.get(); 2456 String currentCountryCode = getCurrentCountryCode(); 2457 if (countryCodeSequence == 0 2458 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2459 2460 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2461 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2462 countryCode); 2463 } 2464 } 2465 } 2466 2467 /** 2468 * reset the country code to default 2469 */ 2470 public synchronized void resetCountryCode() { 2471 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2472 logd("resetting country code to " + mDefaultCountryCode); 2473 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2474 } 2475 } 2476 2477 /** 2478 * reset cached SIM credential data 2479 */ 2480 public synchronized void resetSimAuthNetworks() { 2481 sendMessage(CMD_RESET_SIM_NETWORKS); 2482 } 2483 2484 2485 /** 2486 * Get Network object of current wifi network 2487 * @return Network object of current wifi network 2488 */ 2489 public Network getCurrentNetwork() { 2490 if (mNetworkAgent != null) { 2491 return new Network(mNetworkAgent.netId); 2492 } else { 2493 return null; 2494 } 2495 } 2496 2497 /** 2498 * Get the country code 2499 * 2500 * @return countryCode following ISO 3166 format 2501 */ 2502 public String getCurrentCountryCode() { 2503 return Settings.Global.getString( 2504 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 2505 } 2506 2507 /** 2508 * Set the operational frequency band 2509 * 2510 * @param band 2511 * @param persist {@code true} if the setting should be remembered. 2512 */ 2513 public void setFrequencyBand(int band, boolean persist) { 2514 if (persist) { 2515 Settings.Global.putInt(mContext.getContentResolver(), 2516 Settings.Global.WIFI_FREQUENCY_BAND, 2517 band); 2518 } 2519 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2520 } 2521 2522 /** 2523 * Enable TDLS for a specific MAC address 2524 */ 2525 public void enableTdls(String remoteMacAddress, boolean enable) { 2526 int enabler = enable ? 1 : 0; 2527 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2528 } 2529 2530 /** 2531 * Returns the operational frequency band 2532 */ 2533 public int getFrequencyBand() { 2534 return mFrequencyBand.get(); 2535 } 2536 2537 /** 2538 * Returns the wifi configuration file 2539 */ 2540 public String getConfigFile() { 2541 return mWifiConfigStore.getConfigFile(); 2542 } 2543 2544 /** 2545 * Send a message indicating bluetooth adapter connection state changed 2546 */ 2547 public void sendBluetoothAdapterStateChange(int state) { 2548 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2549 } 2550 2551 /** 2552 * Send a message indicating a package has been uninstalled. 2553 */ 2554 public void removeAppConfigs(String packageName, int uid) { 2555 // Build partial AppInfo manually - package may not exist in database any more 2556 ApplicationInfo ai = new ApplicationInfo(); 2557 ai.packageName = packageName; 2558 ai.uid = uid; 2559 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2560 } 2561 2562 /** 2563 * Send a message indicating a user has been removed. 2564 */ 2565 public void removeUserConfigs(int userId) { 2566 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2567 } 2568 2569 /** 2570 * Save configuration on supplicant 2571 * 2572 * @return {@code true} if the operation succeeds, {@code false} otherwise 2573 * <p/> 2574 * TODO: deprecate this 2575 */ 2576 public boolean syncSaveConfig(AsyncChannel channel) { 2577 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2578 boolean result = (resultMsg.arg1 != FAILURE); 2579 resultMsg.recycle(); 2580 return result; 2581 } 2582 2583 public void updateBatteryWorkSource(WorkSource newSource) { 2584 synchronized (mRunningWifiUids) { 2585 try { 2586 if (newSource != null) { 2587 mRunningWifiUids.set(newSource); 2588 } 2589 if (mIsRunning) { 2590 if (mReportedRunning) { 2591 // If the work source has changed since last time, need 2592 // to remove old work from battery stats. 2593 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2594 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2595 mRunningWifiUids); 2596 mLastRunningWifiUids.set(mRunningWifiUids); 2597 } 2598 } else { 2599 // Now being started, report it. 2600 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2601 mLastRunningWifiUids.set(mRunningWifiUids); 2602 mReportedRunning = true; 2603 } 2604 } else { 2605 if (mReportedRunning) { 2606 // Last reported we were running, time to stop. 2607 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2608 mLastRunningWifiUids.clear(); 2609 mReportedRunning = false; 2610 } 2611 } 2612 mWakeLock.setWorkSource(newSource); 2613 } catch (RemoteException ignore) { 2614 } 2615 } 2616 } 2617 2618 @Override 2619 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2620 super.dump(fd, pw, args); 2621 mSupplicantStateTracker.dump(fd, pw, args); 2622 pw.println("mLinkProperties " + mLinkProperties); 2623 pw.println("mWifiInfo " + mWifiInfo); 2624 pw.println("mDhcpResults " + mDhcpResults); 2625 pw.println("mNetworkInfo " + mNetworkInfo); 2626 pw.println("mLastSignalLevel " + mLastSignalLevel); 2627 pw.println("mLastBssid " + mLastBssid); 2628 pw.println("mLastNetworkId " + mLastNetworkId); 2629 pw.println("mOperationalMode " + mOperationalMode); 2630 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2631 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2632 pw.println("Supplicant status " + mWifiNative.status(true)); 2633 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2634 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2635 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2636 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2637 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2638 pw.println("SSID whitelist :" ); 2639 for (int i=0; i < mWhiteListedSsids.length; i++) { 2640 pw.println(" " + mWhiteListedSsids[i]); 2641 } 2642 } 2643 mNetworkFactory.dump(fd, pw, args); 2644 mUntrustedNetworkFactory.dump(fd, pw, args); 2645 pw.println(); 2646 mWifiConfigStore.dump(fd, pw, args); 2647 pw.println(); 2648 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2649 mWifiLogger.dump(fd, pw, args); 2650 } 2651 2652 /** 2653 * ****************************************************** 2654 * Internal private functions 2655 * ****************************************************** 2656 */ 2657 2658 private void logStateAndMessage(Message message, State state) { 2659 messageHandlingStatus = 0; 2660 if (mLogMessages) { 2661 logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); 2662 } 2663 } 2664 2665 /** 2666 * helper, prints the milli time since boot wi and w/o suspended time 2667 */ 2668 String printTime() { 2669 StringBuilder sb = new StringBuilder(); 2670 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2671 sb.append("/").append(SystemClock.elapsedRealtime()); 2672 return sb.toString(); 2673 } 2674 2675 /** 2676 * Return the additional string to be logged by LogRec, default 2677 * 2678 * @param msg that was processed 2679 * @return information to be logged as a String 2680 */ 2681 protected String getLogRecString(Message msg) { 2682 WifiConfiguration config; 2683 Long now; 2684 String report; 2685 String key; 2686 StringBuilder sb = new StringBuilder(); 2687 if (mScreenOn) { 2688 sb.append("!"); 2689 } 2690 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2691 sb.append("(").append(messageHandlingStatus).append(")"); 2692 } 2693 sb.append(smToString(msg)); 2694 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2695 sb.append(" uid=" + msg.sendingUid); 2696 } 2697 sb.append(" ").append(printTime()); 2698 switch (msg.what) { 2699 case CMD_STARTED_GSCAN_DBG: 2700 case CMD_STARTED_PNO_DBG: 2701 sb.append(" "); 2702 sb.append(Integer.toString(msg.arg1)); 2703 sb.append(" "); 2704 sb.append(Integer.toString(msg.arg2)); 2705 if (msg.obj != null) { 2706 sb.append(" " + (String)msg.obj); 2707 } 2708 break; 2709 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2710 sb.append(" "); 2711 sb.append(Integer.toString(msg.arg1)); 2712 sb.append(" "); 2713 sb.append(Integer.toString(msg.arg2)); 2714 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2715 if (msg.obj != null) { 2716 sb.append(" " + (String)msg.obj); 2717 } 2718 break; 2719 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2720 sb.append(" "); 2721 sb.append(Integer.toString(msg.arg1)); 2722 sb.append(" "); 2723 sb.append(Integer.toString(msg.arg2)); 2724 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2725 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2726 sb.append(" autojoinAllowed="); 2727 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2728 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2729 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2730 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2731 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2732 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2733 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2734 break; 2735 case CMD_PNO_NETWORK_FOUND: 2736 sb.append(" "); 2737 sb.append(Integer.toString(msg.arg1)); 2738 sb.append(" "); 2739 sb.append(Integer.toString(msg.arg2)); 2740 if (msg.obj != null) { 2741 ScanResult[] results = (ScanResult[])msg.obj; 2742 for (int i = 0; i < results.length; i++) { 2743 sb.append(" ").append(results[i].SSID).append(" "); 2744 sb.append(results[i].frequency); 2745 sb.append(" ").append(results[i].level); 2746 } 2747 } 2748 break; 2749 case CMD_START_SCAN: 2750 now = System.currentTimeMillis(); 2751 sb.append(" "); 2752 sb.append(Integer.toString(msg.arg1)); 2753 sb.append(" "); 2754 sb.append(Integer.toString(msg.arg2)); 2755 sb.append(" ic="); 2756 sb.append(Integer.toString(sScanAlarmIntentCount)); 2757 if (msg.obj != null) { 2758 Bundle bundle = (Bundle) msg.obj; 2759 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2760 if (request != 0) { 2761 sb.append(" proc(ms):").append(now - request); 2762 } 2763 } 2764 if (mIsScanOngoing) sb.append(" onGoing"); 2765 if (mIsFullScanOngoing) sb.append(" full"); 2766 if (lastStartScanTimeStamp != 0) { 2767 sb.append(" started:").append(lastStartScanTimeStamp); 2768 sb.append(",").append(now - lastStartScanTimeStamp); 2769 } 2770 if (lastScanDuration != 0) { 2771 sb.append(" dur:").append(lastScanDuration); 2772 } 2773 sb.append(" cnt=").append(mDelayedScanCounter); 2774 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2775 sb.append(" f=").append(mWifiInfo.getFrequency()); 2776 sb.append(" sc=").append(mWifiInfo.score); 2777 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2778 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2779 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2780 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2781 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2782 if (lastScanFreqs != null) { 2783 sb.append(" list=").append(lastScanFreqs); 2784 } else { 2785 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2786 } 2787 report = reportOnTime(); 2788 if (report != null) { 2789 sb.append(" ").append(report); 2790 } 2791 break; 2792 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2793 sb.append(" "); 2794 sb.append(Integer.toString(msg.arg1)); 2795 sb.append(" "); 2796 sb.append(Integer.toString(msg.arg2)); 2797 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2798 if (stateChangeResult != null) { 2799 sb.append(stateChangeResult.toString()); 2800 } 2801 break; 2802 case WifiManager.SAVE_NETWORK: 2803 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2804 sb.append(" "); 2805 sb.append(Integer.toString(msg.arg1)); 2806 sb.append(" "); 2807 sb.append(Integer.toString(msg.arg2)); 2808 if (lastSavedConfigurationAttempt != null) { 2809 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2810 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2811 if (lastSavedConfigurationAttempt.hiddenSSID) { 2812 sb.append(" hidden"); 2813 } 2814 if (lastSavedConfigurationAttempt.preSharedKey != null 2815 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2816 sb.append(" hasPSK"); 2817 } 2818 if (lastSavedConfigurationAttempt.ephemeral) { 2819 sb.append(" ephemeral"); 2820 } 2821 if (lastSavedConfigurationAttempt.selfAdded) { 2822 sb.append(" selfAdded"); 2823 } 2824 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2825 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2826 } 2827 break; 2828 case WifiManager.FORGET_NETWORK: 2829 sb.append(" "); 2830 sb.append(Integer.toString(msg.arg1)); 2831 sb.append(" "); 2832 sb.append(Integer.toString(msg.arg2)); 2833 if (lastForgetConfigurationAttempt != null) { 2834 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2835 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2836 if (lastForgetConfigurationAttempt.hiddenSSID) { 2837 sb.append(" hidden"); 2838 } 2839 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2840 sb.append(" hasPSK"); 2841 } 2842 if (lastForgetConfigurationAttempt.ephemeral) { 2843 sb.append(" ephemeral"); 2844 } 2845 if (lastForgetConfigurationAttempt.selfAdded) { 2846 sb.append(" selfAdded"); 2847 } 2848 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2849 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2850 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2851 } 2852 break; 2853 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2854 sb.append(" "); 2855 sb.append(Integer.toString(msg.arg1)); 2856 sb.append(" "); 2857 sb.append(Integer.toString(msg.arg2)); 2858 String bssid = (String) msg.obj; 2859 if (bssid != null && bssid.length() > 0) { 2860 sb.append(" "); 2861 sb.append(bssid); 2862 } 2863 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2864 break; 2865 case WifiMonitor.SCAN_RESULTS_EVENT: 2866 sb.append(" "); 2867 sb.append(Integer.toString(msg.arg1)); 2868 sb.append(" "); 2869 sb.append(Integer.toString(msg.arg2)); 2870 if (mScanResults != null) { 2871 sb.append(" found="); 2872 sb.append(mScanResults.size()); 2873 } 2874 sb.append(" known=").append(mNumScanResultsKnown); 2875 sb.append(" got=").append(mNumScanResultsReturned); 2876 if (lastScanDuration != 0) { 2877 sb.append(" dur:").append(lastScanDuration); 2878 } 2879 if (mOnTime != 0) { 2880 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2881 sb.append(",").append(mOnTime); 2882 } 2883 if (mTxTime != 0) { 2884 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2885 sb.append(",").append(mTxTime); 2886 } 2887 if (mRxTime != 0) { 2888 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2889 sb.append(",").append(mRxTime); 2890 } 2891 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2892 sb.append(String.format(" con=%d", mConnectionRequests)); 2893 key = mWifiConfigStore.getLastSelectedConfiguration(); 2894 if (key != null) { 2895 sb.append(" last=").append(key); 2896 } 2897 break; 2898 case WifiMonitor.SCAN_FAILED_EVENT: 2899 break; 2900 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2901 sb.append(" "); 2902 sb.append(Integer.toString(msg.arg1)); 2903 sb.append(" "); 2904 sb.append(Integer.toString(msg.arg2)); 2905 sb.append(" ").append(mLastBssid); 2906 sb.append(" nid=").append(mLastNetworkId); 2907 config = getCurrentWifiConfiguration(); 2908 if (config != null) { 2909 sb.append(" ").append(config.configKey()); 2910 } 2911 key = mWifiConfigStore.getLastSelectedConfiguration(); 2912 if (key != null) { 2913 sb.append(" last=").append(key); 2914 } 2915 break; 2916 case CMD_TARGET_BSSID: 2917 case CMD_ASSOCIATED_BSSID: 2918 sb.append(" "); 2919 sb.append(Integer.toString(msg.arg1)); 2920 sb.append(" "); 2921 sb.append(Integer.toString(msg.arg2)); 2922 if (msg.obj != null) { 2923 sb.append(" BSSID=").append((String) msg.obj); 2924 } 2925 if (mTargetRoamBSSID != null) { 2926 sb.append(" Target=").append(mTargetRoamBSSID); 2927 } 2928 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2929 break; 2930 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2931 if (msg.obj != null) { 2932 sb.append(" ").append((String) msg.obj); 2933 } 2934 sb.append(" nid=").append(msg.arg1); 2935 sb.append(" reason=").append(msg.arg2); 2936 if (mLastBssid != null) { 2937 sb.append(" lastbssid=").append(mLastBssid); 2938 } 2939 if (mWifiInfo.getFrequency() != -1) { 2940 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2941 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2942 } 2943 if (linkDebouncing) { 2944 sb.append(" debounce"); 2945 } 2946 break; 2947 case WifiMonitor.SSID_TEMP_DISABLED: 2948 case WifiMonitor.SSID_REENABLED: 2949 sb.append(" nid=").append(msg.arg1); 2950 if (msg.obj != null) { 2951 sb.append(" ").append((String) msg.obj); 2952 } 2953 config = getCurrentWifiConfiguration(); 2954 if (config != null) { 2955 sb.append(" cur=").append(config.configKey()); 2956 sb.append(" ajst=").append(config.autoJoinStatus); 2957 if (config.selfAdded) { 2958 sb.append(" selfAdded"); 2959 } 2960 if (config.status != 0) { 2961 sb.append(" st=").append(config.status); 2962 sb.append(" rs=").append(config.disableReason); 2963 } 2964 if (config.lastConnected != 0) { 2965 now = System.currentTimeMillis(); 2966 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2967 } 2968 if (mLastBssid != null) { 2969 sb.append(" lastbssid=").append(mLastBssid); 2970 } 2971 if (mWifiInfo.getFrequency() != -1) { 2972 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2973 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2974 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2975 } 2976 } 2977 break; 2978 case CMD_RSSI_POLL: 2979 case CMD_UNWANTED_NETWORK: 2980 case WifiManager.RSSI_PKTCNT_FETCH: 2981 sb.append(" "); 2982 sb.append(Integer.toString(msg.arg1)); 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg2)); 2985 if (mWifiInfo.getSSID() != null) 2986 if (mWifiInfo.getSSID() != null) 2987 sb.append(" ").append(mWifiInfo.getSSID()); 2988 if (mWifiInfo.getBSSID() != null) 2989 sb.append(" ").append(mWifiInfo.getBSSID()); 2990 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2991 sb.append(" f=").append(mWifiInfo.getFrequency()); 2992 sb.append(" sc=").append(mWifiInfo.score); 2993 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2994 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2995 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2996 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2997 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2998 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2999 report = reportOnTime(); 3000 if (report != null) { 3001 sb.append(" ").append(report); 3002 } 3003 if (wifiScoringReport != null) { 3004 sb.append(wifiScoringReport); 3005 } 3006 if (mConnectedModeGScanOffloadStarted) { 3007 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3008 } else { 3009 sb.append(" offload-stopped"); 3010 } 3011 break; 3012 case CMD_AUTO_CONNECT: 3013 case WifiManager.CONNECT_NETWORK: 3014 sb.append(" "); 3015 sb.append(Integer.toString(msg.arg1)); 3016 sb.append(" "); 3017 sb.append(Integer.toString(msg.arg2)); 3018 config = (WifiConfiguration) msg.obj; 3019 if (config != null) { 3020 sb.append(" ").append(config.configKey()); 3021 if (config.visibility != null) { 3022 sb.append(" ").append(config.visibility.toString()); 3023 } 3024 } 3025 if (mTargetRoamBSSID != null) { 3026 sb.append(" ").append(mTargetRoamBSSID); 3027 } 3028 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3029 config = getCurrentWifiConfiguration(); 3030 if (config != null) { 3031 sb.append(config.configKey()); 3032 if (config.visibility != null) { 3033 sb.append(" ").append(config.visibility.toString()); 3034 } 3035 } 3036 break; 3037 case CMD_AUTO_ROAM: 3038 sb.append(" "); 3039 sb.append(Integer.toString(msg.arg1)); 3040 sb.append(" "); 3041 sb.append(Integer.toString(msg.arg2)); 3042 ScanResult result = (ScanResult) msg.obj; 3043 if (result != null) { 3044 now = System.currentTimeMillis(); 3045 sb.append(" bssid=").append(result.BSSID); 3046 sb.append(" rssi=").append(result.level); 3047 sb.append(" freq=").append(result.frequency); 3048 if (result.seen > 0 && result.seen < now) { 3049 sb.append(" seen=").append(now - result.seen); 3050 } else { 3051 // Somehow the timestamp for this scan result is inconsistent 3052 sb.append(" !seen=").append(result.seen); 3053 } 3054 } 3055 if (mTargetRoamBSSID != null) { 3056 sb.append(" ").append(mTargetRoamBSSID); 3057 } 3058 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3059 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3060 break; 3061 case CMD_ADD_OR_UPDATE_NETWORK: 3062 sb.append(" "); 3063 sb.append(Integer.toString(msg.arg1)); 3064 sb.append(" "); 3065 sb.append(Integer.toString(msg.arg2)); 3066 if (msg.obj != null) { 3067 config = (WifiConfiguration) msg.obj; 3068 sb.append(" ").append(config.configKey()); 3069 sb.append(" prio=").append(config.priority); 3070 sb.append(" status=").append(config.status); 3071 if (config.BSSID != null) { 3072 sb.append(" ").append(config.BSSID); 3073 } 3074 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3075 if (curConfig != null) { 3076 if (curConfig.configKey().equals(config.configKey())) { 3077 sb.append(" is current"); 3078 } else { 3079 sb.append(" current=").append(curConfig.configKey()); 3080 sb.append(" prio=").append(curConfig.priority); 3081 sb.append(" status=").append(curConfig.status); 3082 } 3083 } 3084 } 3085 break; 3086 case WifiManager.DISABLE_NETWORK: 3087 case CMD_ENABLE_NETWORK: 3088 sb.append(" "); 3089 sb.append(Integer.toString(msg.arg1)); 3090 sb.append(" "); 3091 sb.append(Integer.toString(msg.arg2)); 3092 key = mWifiConfigStore.getLastSelectedConfiguration(); 3093 if (key != null) { 3094 sb.append(" last=").append(key); 3095 } 3096 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3097 if (config != null && (key == null || !config.configKey().equals(key))) { 3098 sb.append(" target=").append(key); 3099 } 3100 break; 3101 case CMD_GET_CONFIGURED_NETWORKS: 3102 sb.append(" "); 3103 sb.append(Integer.toString(msg.arg1)); 3104 sb.append(" "); 3105 sb.append(Integer.toString(msg.arg2)); 3106 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3107 break; 3108 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3109 sb.append(" "); 3110 sb.append(Integer.toString(msg.arg1)); 3111 sb.append(" "); 3112 sb.append(Integer.toString(msg.arg2)); 3113 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3114 sb.append(",").append(mWifiInfo.txBad); 3115 sb.append(",").append(mWifiInfo.txRetries); 3116 break; 3117 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3118 sb.append(" "); 3119 sb.append(Integer.toString(msg.arg1)); 3120 sb.append(" "); 3121 sb.append(Integer.toString(msg.arg2)); 3122 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3123 sb.append(" OK "); 3124 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3125 sb.append(" FAIL "); 3126 } 3127 if (mLinkProperties != null) { 3128 if (mLinkProperties.hasIPv4Address()) { 3129 sb.append(" v4"); 3130 } 3131 if (mLinkProperties.hasGlobalIPv6Address()) { 3132 sb.append(" v6"); 3133 } 3134 if (mLinkProperties.hasIPv4DefaultRoute()) { 3135 sb.append(" v4r"); 3136 } 3137 if (mLinkProperties.hasIPv6DefaultRoute()) { 3138 sb.append(" v6r"); 3139 } 3140 if (mLinkProperties.hasIPv4DnsServer()) { 3141 sb.append(" v4dns"); 3142 } 3143 if (mLinkProperties.hasIPv6DnsServer()) { 3144 sb.append(" v6dns"); 3145 } 3146 } 3147 break; 3148 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3149 sb.append(" "); 3150 sb.append(Integer.toString(msg.arg1)); 3151 sb.append(" "); 3152 sb.append(Integer.toString(msg.arg2)); 3153 if (msg.obj != null) { 3154 NetworkInfo info = (NetworkInfo) msg.obj; 3155 NetworkInfo.State state = info.getState(); 3156 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3157 if (state != null) { 3158 sb.append(" st=").append(state); 3159 } 3160 if (detailedState != null) { 3161 sb.append("/").append(detailedState); 3162 } 3163 } 3164 break; 3165 case CMD_IP_CONFIGURATION_LOST: 3166 int count = -1; 3167 WifiConfiguration c = getCurrentWifiConfiguration(); 3168 if (c != null) count = c.numIpConfigFailures; 3169 sb.append(" "); 3170 sb.append(Integer.toString(msg.arg1)); 3171 sb.append(" "); 3172 sb.append(Integer.toString(msg.arg2)); 3173 sb.append(" failures: "); 3174 sb.append(Integer.toString(count)); 3175 sb.append("/"); 3176 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3177 if (mWifiInfo.getBSSID() != null) { 3178 sb.append(" ").append(mWifiInfo.getBSSID()); 3179 } 3180 if (c != null) { 3181 ScanDetailCache scanDetailCache = 3182 mWifiConfigStore.getScanDetailCache(c); 3183 if (scanDetailCache != null) { 3184 for (ScanDetail sd : scanDetailCache.values()) { 3185 ScanResult r = sd.getScanResult(); 3186 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3187 sb.append(" ipfail=").append(r.numIpConfigFailures); 3188 sb.append(",st=").append(r.autoJoinStatus); 3189 } 3190 } 3191 } 3192 sb.append(" -> ajst=").append(c.autoJoinStatus); 3193 sb.append(" ").append(c.disableReason); 3194 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3195 sb.append(",").append(mWifiInfo.txBad); 3196 sb.append(",").append(mWifiInfo.txRetries); 3197 } 3198 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3199 break; 3200 case CMD_UPDATE_LINKPROPERTIES: 3201 sb.append(" "); 3202 sb.append(Integer.toString(msg.arg1)); 3203 sb.append(" "); 3204 sb.append(Integer.toString(msg.arg2)); 3205 if (mLinkProperties != null) { 3206 if (mLinkProperties.hasIPv4Address()) { 3207 sb.append(" v4"); 3208 } 3209 if (mLinkProperties.hasGlobalIPv6Address()) { 3210 sb.append(" v6"); 3211 } 3212 if (mLinkProperties.hasIPv4DefaultRoute()) { 3213 sb.append(" v4r"); 3214 } 3215 if (mLinkProperties.hasIPv6DefaultRoute()) { 3216 sb.append(" v6r"); 3217 } 3218 if (mLinkProperties.hasIPv4DnsServer()) { 3219 sb.append(" v4dns"); 3220 } 3221 if (mLinkProperties.hasIPv6DnsServer()) { 3222 sb.append(" v6dns"); 3223 } 3224 } 3225 break; 3226 case CMD_IP_REACHABILITY_LOST: 3227 if (msg.obj != null) { 3228 sb.append(" ").append((String) msg.obj); 3229 } 3230 break; 3231 case CMD_SET_COUNTRY_CODE: 3232 sb.append(" "); 3233 sb.append(Integer.toString(msg.arg1)); 3234 sb.append(" "); 3235 sb.append(Integer.toString(msg.arg2)); 3236 if (msg.obj != null) { 3237 sb.append(" ").append((String) msg.obj); 3238 } 3239 break; 3240 case CMD_ROAM_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(roamWatchdogCount); 3246 break; 3247 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3248 sb.append(" "); 3249 sb.append(Integer.toString(msg.arg1)); 3250 sb.append(" "); 3251 sb.append(Integer.toString(msg.arg2)); 3252 sb.append(" cur=").append(disconnectingWatchdogCount); 3253 break; 3254 case CMD_START_RSSI_MONITORING_OFFLOAD: 3255 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3256 case CMD_RSSI_THRESHOLD_BREACH: 3257 sb.append(" rssi="); 3258 sb.append(Integer.toString(msg.arg1)); 3259 sb.append(" thresholds="); 3260 sb.append(Arrays.toString(mRssiRanges)); 3261 break; 3262 default: 3263 sb.append(" "); 3264 sb.append(Integer.toString(msg.arg1)); 3265 sb.append(" "); 3266 sb.append(Integer.toString(msg.arg2)); 3267 break; 3268 } 3269 3270 return sb.toString(); 3271 } 3272 3273 private void stopPnoOffload() { 3274 3275 // clear the PNO list 3276 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3277 Log.e(TAG, "Failed to stop pno"); 3278 } 3279 3280 } 3281 3282 3283 private boolean configureSsidWhiteList() { 3284 3285 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3286 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3287 return true; 3288 } 3289 3290 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3291 loge("configureSsidWhiteList couldnt program SSID list, size " 3292 + mWhiteListedSsids.length); 3293 return false; 3294 } 3295 3296 logd("configureSsidWhiteList success"); 3297 return true; 3298 } 3299 3300 // In associated more, lazy roam will be looking for 5GHz roam candidate 3301 private boolean configureLazyRoam() { 3302 boolean status; 3303 if (!useHalBasedAutoJoinOffload()) return false; 3304 3305 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3306 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3307 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3308 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3309 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3310 params.A_band_max_boost = 65; 3311 params.lazy_roam_hysteresis = 25; 3312 params.alert_roam_rssi_trigger = -75; 3313 3314 if (DBG) { 3315 Log.e(TAG, "configureLazyRoam " + params.toString()); 3316 } 3317 3318 if (!WifiNative.setLazyRoam(true, params)) { 3319 3320 Log.e(TAG, "configureLazyRoam couldnt program params"); 3321 3322 return false; 3323 } 3324 if (DBG) { 3325 Log.e(TAG, "configureLazyRoam success"); 3326 } 3327 return true; 3328 } 3329 3330 // In associated more, lazy roam will be looking for 5GHz roam candidate 3331 private boolean stopLazyRoam() { 3332 boolean status; 3333 if (!useHalBasedAutoJoinOffload()) return false; 3334 if (DBG) { 3335 Log.e(TAG, "stopLazyRoam"); 3336 } 3337 return WifiNative.setLazyRoam(false, null); 3338 } 3339 3340 private boolean startGScanConnectedModeOffload(String reason) { 3341 if (DBG) { 3342 if (reason == null) { 3343 reason = ""; 3344 } 3345 logd("startGScanConnectedModeOffload " + reason); 3346 } 3347 stopGScan("startGScanConnectedModeOffload " + reason); 3348 if (!mScreenOn) return false; 3349 3350 if (USE_PAUSE_SCANS) { 3351 mWifiNative.pauseScan(); 3352 } 3353 mPnoEnabled = configurePno(); 3354 if (mPnoEnabled == false) { 3355 if (USE_PAUSE_SCANS) { 3356 mWifiNative.restartScan(); 3357 } 3358 return false; 3359 } 3360 mLazyRoamEnabled = configureLazyRoam(); 3361 if (mLazyRoamEnabled == false) { 3362 if (USE_PAUSE_SCANS) { 3363 mWifiNative.restartScan(); 3364 } 3365 return false; 3366 } 3367 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3368 configureSsidWhiteList(); 3369 } 3370 if (!startConnectedGScan(reason)) { 3371 if (USE_PAUSE_SCANS) { 3372 mWifiNative.restartScan(); 3373 } 3374 return false; 3375 } 3376 if (USE_PAUSE_SCANS) { 3377 mWifiNative.restartScan(); 3378 } 3379 mConnectedModeGScanOffloadStarted = true; 3380 if (DBG) { 3381 logd("startGScanConnectedModeOffload success"); 3382 } 3383 return true; 3384 } 3385 3386 private boolean startGScanDisconnectedModeOffload(String reason) { 3387 if (DBG) { 3388 logd("startGScanDisconnectedModeOffload " + reason); 3389 } 3390 stopGScan("startGScanDisconnectedModeOffload " + reason); 3391 if (USE_PAUSE_SCANS) { 3392 mWifiNative.pauseScan(); 3393 } 3394 mPnoEnabled = configurePno(); 3395 if (mPnoEnabled == false) { 3396 if (USE_PAUSE_SCANS) { 3397 mWifiNative.restartScan(); 3398 } 3399 return false; 3400 } 3401 if (!startDisconnectedGScan(reason)) { 3402 if (USE_PAUSE_SCANS) { 3403 mWifiNative.restartScan(); 3404 } 3405 return false; 3406 } 3407 if (USE_PAUSE_SCANS) { 3408 mWifiNative.restartScan(); 3409 } 3410 return true; 3411 } 3412 3413 private boolean configurePno() { 3414 if (!useHalBasedAutoJoinOffload()) return false; 3415 3416 if (mWifiScanner == null) { 3417 log("configurePno: mWifiScanner is null "); 3418 return true; 3419 } 3420 3421 List<WifiNative.WifiPnoNetwork> llist 3422 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3423 if (llist == null || llist.size() == 0) { 3424 stopPnoOffload(); 3425 log("configurePno: empty PNO list "); 3426 return true; 3427 } 3428 if (DBG) { 3429 log("configurePno: got llist size " + llist.size()); 3430 } 3431 3432 // first program the network we want to look for thru the pno API 3433 WifiNative.WifiPnoNetwork list[] 3434 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3435 3436 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3437 Log.e(TAG, "Failed to set pno, length = " + list.length); 3438 return false; 3439 } 3440 3441 if (true) { 3442 StringBuilder sb = new StringBuilder(); 3443 for (WifiNative.WifiPnoNetwork network : list) { 3444 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3445 sb.append(" flags="); 3446 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3447 sb.append("] "); 3448 3449 } 3450 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3451 } 3452 return true; 3453 } 3454 3455 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3456 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3457 3458 private boolean startConnectedGScan(String reason) { 3459 // send a scan background request so as to kick firmware 3460 // 5GHz roaming and autojoin 3461 // We do this only if screen is on 3462 WifiScanner.ScanSettings settings; 3463 3464 if (mPnoEnabled || mLazyRoamEnabled) { 3465 settings = new WifiScanner.ScanSettings(); 3466 settings.band = WifiScanner.WIFI_BAND_BOTH; 3467 long now = System.currentTimeMillis(); 3468 3469 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3470 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3471 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3472 } else { 3473 mGScanStartTimeMilli = now; 3474 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3475 // if we start offload with short interval, then reconfigure it after a given 3476 // duration of time so as to reduce the scan frequency 3477 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3478 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3479 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3480 (long)delay); 3481 mRestartAutoJoinOffloadCounter++; 3482 } 3483 mGScanPeriodMilli = settings.periodInMs; 3484 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3485 if (DBG) { 3486 log("startConnectedScan: settings band="+ settings.band 3487 + " period=" + settings.periodInMs); 3488 } 3489 3490 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3491 if (true) { 3492 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3493 } 3494 } 3495 return true; 3496 } 3497 3498 private boolean startDisconnectedGScan(String reason) { 3499 // send a scan background request so as to kick firmware 3500 // PNO 3501 // This is done in both screen On and screen Off modes 3502 WifiScanner.ScanSettings settings; 3503 3504 if (mWifiScanner == null) { 3505 log("startDisconnectedGScan: no wifi scanner"); 3506 return false; 3507 } 3508 3509 if (mPnoEnabled || mLazyRoamEnabled) { 3510 settings = new WifiScanner.ScanSettings(); 3511 settings.band = WifiScanner.WIFI_BAND_BOTH; 3512 long now = System.currentTimeMillis(); 3513 3514 3515 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3516 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3517 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3518 } else { 3519 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3520 mGScanStartTimeMilli = now; 3521 // if we start offload with short interval, then reconfigure it after a given 3522 // duration of time so as to reduce the scan frequency 3523 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3524 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3525 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3526 (long)delay); 3527 mRestartAutoJoinOffloadCounter++; 3528 } 3529 mGScanPeriodMilli = settings.periodInMs; 3530 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3531 if (DBG) { 3532 log("startDisconnectedScan: settings band="+ settings.band 3533 + " period=" + settings.periodInMs); 3534 } 3535 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3536 if (true) { 3537 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3538 } 3539 } 3540 return true; 3541 } 3542 3543 private boolean stopGScan(String reason) { 3544 mGScanStartTimeMilli = 0; 3545 mGScanPeriodMilli = 0; 3546 if (mWifiScanner != null) { 3547 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3548 } 3549 mConnectedModeGScanOffloadStarted = false; 3550 if (true) { 3551 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3552 } 3553 return true; 3554 } 3555 3556 private void handleScreenStateChanged(boolean screenOn) { 3557 mScreenOn = screenOn; 3558 if (PDBG) { 3559 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3560 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3561 + " state " + getCurrentState().getName() 3562 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3563 } 3564 enableRssiPolling(screenOn); 3565 if (mUserWantsSuspendOpt.get()) { 3566 if (screenOn) { 3567 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3568 } else { 3569 // Allow 2s for suspend optimizations to be set 3570 mSuspendWakeLock.acquire(2000); 3571 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3572 } 3573 } 3574 mScreenBroadcastReceived.set(true); 3575 3576 getWifiLinkLayerStats(false); 3577 mOnTimeScreenStateChange = mOnTime; 3578 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3579 3580 cancelDelayedScan(); 3581 3582 if (screenOn) { 3583 enableBackgroundScan(false); 3584 setScanAlarm(false); 3585 clearBlacklist(); 3586 3587 fullBandConnectedTimeIntervalMilli 3588 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3589 // In either Disconnectedstate or ConnectedState, 3590 // start the scan alarm so as to enable autojoin 3591 if (getCurrentState() == mConnectedState 3592 && allowFullBandScanAndAssociated()) { 3593 if (useHalBasedAutoJoinOffload()) { 3594 startGScanConnectedModeOffload("screenOnConnected"); 3595 } else { 3596 // Scan after 500ms 3597 startDelayedScan(500, null, null); 3598 } 3599 } else if (getCurrentState() == mDisconnectedState) { 3600 if (useHalBasedAutoJoinOffload()) { 3601 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3602 } else { 3603 // Scan after 500ms 3604 startDelayedScan(500, null, null); 3605 } 3606 } 3607 } else { 3608 if (getCurrentState() == mDisconnectedState) { 3609 // Screen Off and Disconnected and chipset doesn't support scan offload 3610 // => start scan alarm 3611 // Screen Off and Disconnected and chipset does support scan offload 3612 // => will use scan offload (i.e. background scan) 3613 if (useHalBasedAutoJoinOffload()) { 3614 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3615 } else { 3616 if (!mBackgroundScanSupported) { 3617 setScanAlarm(true); 3618 } else { 3619 if (!mIsScanOngoing) { 3620 enableBackgroundScan(true); 3621 } 3622 } 3623 } 3624 } else { 3625 enableBackgroundScan(false); 3626 if (useHalBasedAutoJoinOffload()) { 3627 // don't try stop Gscan if it is not enabled 3628 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3629 } 3630 } 3631 } 3632 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3633 3634 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3635 } 3636 3637 private void checkAndSetConnectivityInstance() { 3638 if (mCm == null) { 3639 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3640 } 3641 } 3642 3643 private boolean startTethering(ArrayList<String> available) { 3644 3645 boolean wifiAvailable = false; 3646 3647 checkAndSetConnectivityInstance(); 3648 3649 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3650 3651 for (String intf : available) { 3652 for (String regex : wifiRegexs) { 3653 if (intf.matches(regex)) { 3654 3655 InterfaceConfiguration ifcg = null; 3656 try { 3657 ifcg = mNwService.getInterfaceConfig(intf); 3658 if (ifcg != null) { 3659 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3660 ifcg.setLinkAddress(new LinkAddress( 3661 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3662 ifcg.setInterfaceUp(); 3663 3664 mNwService.setInterfaceConfig(intf, ifcg); 3665 } 3666 } catch (Exception e) { 3667 loge("Error configuring interface " + intf + ", :" + e); 3668 return false; 3669 } 3670 3671 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3672 loge("Error tethering on " + intf); 3673 return false; 3674 } 3675 mTetherInterfaceName = intf; 3676 return true; 3677 } 3678 } 3679 } 3680 // We found no interfaces to tether 3681 return false; 3682 } 3683 3684 private void stopTethering() { 3685 3686 checkAndSetConnectivityInstance(); 3687 3688 /* Clear the interface config to allow dhcp correctly configure new 3689 ip settings */ 3690 InterfaceConfiguration ifcg = null; 3691 try { 3692 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3693 if (ifcg != null) { 3694 ifcg.setLinkAddress( 3695 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3696 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3697 } 3698 } catch (Exception e) { 3699 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3700 } 3701 3702 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3703 loge("Untether initiate failed!"); 3704 } 3705 } 3706 3707 private boolean isWifiTethered(ArrayList<String> active) { 3708 3709 checkAndSetConnectivityInstance(); 3710 3711 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3712 for (String intf : active) { 3713 for (String regex : wifiRegexs) { 3714 if (intf.matches(regex)) { 3715 return true; 3716 } 3717 } 3718 } 3719 // We found no interfaces that are tethered 3720 return false; 3721 } 3722 3723 /** 3724 * Set the country code from the system setting value, if any. 3725 */ 3726 private void initializeCountryCode() { 3727 String countryCode = getCurrentCountryCode(); 3728 if (countryCode != null && !countryCode.isEmpty()) { 3729 setCountryCode(countryCode, false); 3730 } else { 3731 //use driver default 3732 } 3733 } 3734 3735 /** 3736 * Set the frequency band from the system setting value, if any. 3737 */ 3738 private void setFrequencyBand() { 3739 int band = Settings.Global.getInt(mContext.getContentResolver(), 3740 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3741 3742 if (mWifiNative.setBand(band)) { 3743 mFrequencyBand.set(band); 3744 if (PDBG) { 3745 logd("done set frequency band " + band); 3746 } 3747 } else { 3748 loge("Failed to set frequency band " + band); 3749 } 3750 } 3751 3752 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3753 if (DBG) { 3754 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3755 + " -want " + mUserWantsSuspendOpt.get() 3756 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3757 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3758 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3759 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3760 } 3761 //mWifiNative.setSuspendOptimizations(enabled); 3762 3763 if (enabled) { 3764 mSuspendOptNeedsDisabled &= ~reason; 3765 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3766 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3767 if (DBG) { 3768 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3769 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3770 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3771 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3772 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3773 } 3774 mWifiNative.setSuspendOptimizations(true); 3775 } 3776 } else { 3777 mSuspendOptNeedsDisabled |= reason; 3778 mWifiNative.setSuspendOptimizations(false); 3779 } 3780 } 3781 3782 private void setSuspendOptimizations(int reason, boolean enabled) { 3783 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3784 if (enabled) { 3785 mSuspendOptNeedsDisabled &= ~reason; 3786 } else { 3787 mSuspendOptNeedsDisabled |= reason; 3788 } 3789 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3790 } 3791 3792 private void setWifiState(int wifiState) { 3793 final int previousWifiState = mWifiState.get(); 3794 3795 try { 3796 if (wifiState == WIFI_STATE_ENABLED) { 3797 mBatteryStats.noteWifiOn(); 3798 } else if (wifiState == WIFI_STATE_DISABLED) { 3799 mBatteryStats.noteWifiOff(); 3800 } 3801 } catch (RemoteException e) { 3802 loge("Failed to note battery stats in wifi"); 3803 } 3804 3805 mWifiState.set(wifiState); 3806 3807 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3808 3809 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3810 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3811 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3812 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3813 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3814 } 3815 3816 private void setWifiApState(int wifiApState, int reason) { 3817 final int previousWifiApState = mWifiApState.get(); 3818 3819 try { 3820 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3821 mBatteryStats.noteWifiOn(); 3822 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3823 mBatteryStats.noteWifiOff(); 3824 } 3825 } catch (RemoteException e) { 3826 loge("Failed to note battery stats in wifi"); 3827 } 3828 3829 // Update state 3830 mWifiApState.set(wifiApState); 3831 3832 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3833 3834 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3835 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3836 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3837 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3838 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3839 //only set reason number when softAP start failed 3840 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3841 } 3842 3843 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3844 } 3845 3846 private static final String IE_STR = "ie="; 3847 private static final String ID_STR = "id="; 3848 private static final String BSSID_STR = "bssid="; 3849 private static final String FREQ_STR = "freq="; 3850 private static final String LEVEL_STR = "level="; 3851 private static final String TSF_STR = "tsf="; 3852 private static final String FLAGS_STR = "flags="; 3853 private static final String SSID_STR = "ssid="; 3854 private static final String DELIMITER_STR = "===="; 3855 private static final String END_STR = "####"; 3856 3857 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3858 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3859 3860 /** 3861 * Format: 3862 * <p/> 3863 * id=1 3864 * bssid=68:7f:76:d7:1a:6e 3865 * freq=2412 3866 * level=-44 3867 * tsf=1344626243700342 3868 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3869 * ssid=zfdy 3870 * ==== 3871 * id=2 3872 * bssid=68:5f:74:d7:1a:6f 3873 * freq=5180 3874 * level=-73 3875 * tsf=1344626243700373 3876 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3877 * ssid=zuby 3878 * ==== 3879 */ 3880 private void setScanResults() { 3881 mNumScanResultsKnown = 0; 3882 mNumScanResultsReturned = 0; 3883 String bssid = ""; 3884 int level = 0; 3885 int freq = 0; 3886 long tsf = 0; 3887 String flags = ""; 3888 WifiSsid wifiSsid = null; 3889 String scanResults; 3890 String tmpResults; 3891 StringBuffer scanResultsBuf = new StringBuffer(); 3892 int sid = 0; 3893 3894 while (true) { 3895 tmpResults = mWifiNative.scanResults(sid); 3896 if (TextUtils.isEmpty(tmpResults)) break; 3897 scanResultsBuf.append(tmpResults); 3898 scanResultsBuf.append("\n"); 3899 String[] lines = tmpResults.split("\n"); 3900 sid = -1; 3901 for (int i = lines.length - 1; i >= 0; i--) { 3902 if (lines[i].startsWith(END_STR)) { 3903 break; 3904 } else if (lines[i].startsWith(ID_STR)) { 3905 try { 3906 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3907 } catch (NumberFormatException e) { 3908 // Nothing to do 3909 } 3910 break; 3911 } 3912 } 3913 if (sid == -1) break; 3914 } 3915 3916 scanResults = scanResultsBuf.toString(); 3917 3918 if (TextUtils.isEmpty(scanResults)) { 3919 mScanResults = new ArrayList<>(); 3920 return; 3921 } 3922 3923 mWifiConfigStore.trimANQPCache(false); 3924 3925 // note that all these splits and substrings keep references to the original 3926 // huge string buffer while the amount we really want is generally pretty small 3927 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3928 synchronized (mScanResultCache) { 3929 mScanResults = new ArrayList<>(); 3930 String[] lines = scanResults.split("\n"); 3931 final int bssidStrLen = BSSID_STR.length(); 3932 final int flagLen = FLAGS_STR.length(); 3933 String infoElements = null; 3934 List<String> anqpLines = null; 3935 3936 for (String line : lines) { 3937 if (line.startsWith(BSSID_STR)) { 3938 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3939 } else if (line.startsWith(FREQ_STR)) { 3940 try { 3941 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3942 } catch (NumberFormatException e) { 3943 freq = 0; 3944 } 3945 } else if (line.startsWith(LEVEL_STR)) { 3946 try { 3947 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3948 /* some implementations avoid negative values by adding 256 3949 * so we need to adjust for that here. 3950 */ 3951 if (level > 0) level -= 256; 3952 } catch (NumberFormatException e) { 3953 level = 0; 3954 } 3955 } else if (line.startsWith(TSF_STR)) { 3956 try { 3957 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3958 } catch (NumberFormatException e) { 3959 tsf = 0; 3960 } 3961 } else if (line.startsWith(FLAGS_STR)) { 3962 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3963 } else if (line.startsWith(SSID_STR)) { 3964 wifiSsid = WifiSsid.createFromAsciiEncoded( 3965 line.substring(SSID_STR.length())); 3966 } else if (line.startsWith(IE_STR)) { 3967 infoElements = line; 3968 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3969 if (anqpLines == null) { 3970 anqpLines = new ArrayList<>(); 3971 } 3972 anqpLines.add(line); 3973 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3974 if (bssid != null) { 3975 try { 3976 NetworkDetail networkDetail = 3977 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3978 3979 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3980 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3981 logd(String.format( 3982 "Inconsistent SSID on BSSID '%s': '%s' vs '%s': %s", 3983 bssid, xssid, networkDetail.getSSID(), infoElements)); 3984 } 3985 3986 if (networkDetail.hasInterworking()) { 3987 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3988 } 3989 3990 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3991 if (scanDetail != null) { 3992 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3993 flags, freq, tsf); 3994 } else { 3995 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3996 flags, level, freq, tsf); 3997 mScanResultCache.put(networkDetail, scanDetail); 3998 } 3999 4000 mNumScanResultsReturned++; // Keep track of how many scan results we got 4001 // as part of this scan's processing 4002 mScanResults.add(scanDetail); 4003 } catch (IllegalArgumentException iae) { 4004 Log.d(TAG, "Failed to parse information elements: " + iae); 4005 } 4006 } 4007 bssid = null; 4008 level = 0; 4009 freq = 0; 4010 tsf = 0; 4011 flags = ""; 4012 wifiSsid = null; 4013 infoElements = null; 4014 anqpLines = null; 4015 } 4016 } 4017 } 4018 4019 /* don't attempt autojoin if last connect attempt was just scheduled */ 4020 boolean attemptAutoJoin = 4021 (System.currentTimeMillis() - lastConnectAttemptTimestamp) > CONNECT_TIMEOUT_MSEC; 4022 SupplicantState state = mWifiInfo.getSupplicantState(); 4023 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 4024 if (getCurrentState() == mRoamingState 4025 || getCurrentState() == mObtainingIpState 4026 || getCurrentState() == mScanModeState 4027 || getCurrentState() == mDisconnectingState 4028 || (getCurrentState() == mConnectedState 4029 && !getEnableAutoJoinWhenAssociated()) 4030 || linkDebouncing 4031 || state == SupplicantState.ASSOCIATING 4032 || state == SupplicantState.AUTHENTICATING 4033 || state == SupplicantState.FOUR_WAY_HANDSHAKE 4034 || state == SupplicantState.GROUP_HANDSHAKE 4035 || (/* keep autojoin enabled if user has manually selected a wifi network, 4036 so as to make sure we reliably remain connected to this network */ 4037 mConnectionRequests == 0 && selection == null) 4038 || mInDelayedStop) { 4039 // Dont attempt auto-joining again while we are already attempting to join 4040 // and/or obtaining Ip address 4041 attemptAutoJoin = false; 4042 } 4043 if (DBG) { 4044 if (selection == null) { 4045 selection = "<none>"; 4046 } 4047 logd("wifi setScanResults state" + getCurrentState() 4048 + " sup_state=" + state 4049 + " debouncing=" + linkDebouncing 4050 + " mConnectionRequests=" + mConnectionRequests 4051 + " selection=" + selection 4052 + " mNumScanResultsReturned " + mNumScanResultsReturned 4053 + " mScanResults " + mScanResults.size()); 4054 } 4055 if (attemptAutoJoin) { 4056 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 4057 } 4058 // Loose last selected configuration if we have been disconnected for 5 minutes 4059 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 4060 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 4061 } 4062 4063 if (attemptAutoJoin) { 4064 synchronized (mScanResultCache) { 4065 // AutoJoincontroller will directly acces the scan result list and update it with 4066 // ScanResult status 4067 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 4068 } 4069 } 4070 if (linkDebouncing) { 4071 // If debouncing, we dont re-select a SSID or BSSID hence 4072 // there is no need to call the network selection code 4073 // in WifiAutoJoinController, instead, 4074 // just try to reconnect to the same SSID by triggering a roam 4075 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4076 } 4077 } 4078 4079 /* 4080 * Fetch RSSI, linkspeed, and frequency on current connection 4081 */ 4082 private void fetchRssiLinkSpeedAndFrequencyNative() { 4083 Integer newRssi = null; 4084 Integer newLinkSpeed = null; 4085 Integer newFrequency = null; 4086 4087 String signalPoll = mWifiNative.signalPoll(); 4088 4089 if (signalPoll != null) { 4090 String[] lines = signalPoll.split("\n"); 4091 for (String line : lines) { 4092 String[] prop = line.split("="); 4093 if (prop.length < 2) continue; 4094 try { 4095 if (prop[0].equals("RSSI")) { 4096 newRssi = Integer.parseInt(prop[1]); 4097 } else if (prop[0].equals("LINKSPEED")) { 4098 newLinkSpeed = Integer.parseInt(prop[1]); 4099 } else if (prop[0].equals("FREQUENCY")) { 4100 newFrequency = Integer.parseInt(prop[1]); 4101 } 4102 } catch (NumberFormatException e) { 4103 //Ignore, defaults on rssi and linkspeed are assigned 4104 } 4105 } 4106 } 4107 4108 if (PDBG) { 4109 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi + 4110 " linkspeed=" + newLinkSpeed + " freq=" + newFrequency); 4111 } 4112 4113 if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4114 // screen out invalid values 4115 /* some implementations avoid negative values by adding 256 4116 * so we need to adjust for that here. 4117 */ 4118 if (newRssi > 0) newRssi -= 256; 4119 mWifiInfo.setRssi(newRssi); 4120 /* 4121 * Rather then sending the raw RSSI out every time it 4122 * changes, we precalculate the signal level that would 4123 * be displayed in the status bar, and only send the 4124 * broadcast if that much more coarse-grained number 4125 * changes. This cuts down greatly on the number of 4126 * broadcasts, at the cost of not informing others 4127 * interested in RSSI of all the changes in signal 4128 * level. 4129 */ 4130 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4131 if (newSignalLevel != mLastSignalLevel) { 4132 updateCapabilities(getCurrentWifiConfiguration()); 4133 sendRssiChangeBroadcast(newRssi); 4134 } 4135 mLastSignalLevel = newSignalLevel; 4136 } else { 4137 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4138 updateCapabilities(getCurrentWifiConfiguration()); 4139 } 4140 4141 if (newLinkSpeed != null) { 4142 mWifiInfo.setLinkSpeed(newLinkSpeed); 4143 } 4144 if (newFrequency != null && newFrequency > 0) { 4145 if (ScanResult.is5GHz(newFrequency)) { 4146 mWifiConnectionStatistics.num5GhzConnected++; 4147 } 4148 if (ScanResult.is24GHz(newFrequency)) { 4149 mWifiConnectionStatistics.num24GhzConnected++; 4150 } 4151 mWifiInfo.setFrequency(newFrequency); 4152 } 4153 mWifiConfigStore.updateConfiguration(mWifiInfo); 4154 } 4155 4156 /** 4157 * Determine if we need to switch network: 4158 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4159 * - match the uregncy of the switch versus the packet usage at the interface 4160 */ 4161 boolean shouldSwitchNetwork(int networkDelta) { 4162 int delta; 4163 if (networkDelta <= 0) { 4164 return false; 4165 } 4166 delta = networkDelta; 4167 if (mWifiInfo != null) { 4168 if (!getEnableAutoJoinWhenAssociated() 4169 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4170 // If AutoJoin while associated is not enabled, 4171 // we should never switch network when already associated 4172 delta = -1000; 4173 } else { 4174 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4175 // TODO: at the interface. We should also discriminate between ucast and mcast, 4176 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4177 // TODO: broadcasts 4178 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4179 delta -= 999; 4180 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4181 delta -= 6; 4182 } 4183 logd("shouldSwitchNetwork " 4184 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4185 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4186 + " delta " + networkDelta + " -> " + delta); 4187 } 4188 } else { 4189 logd("shouldSwitchNetwork " 4190 + " delta " + networkDelta + " -> " + delta); 4191 } 4192 if (delta > 0) { 4193 return true; 4194 } 4195 return false; 4196 } 4197 4198 // Polling has completed, hence we wont have a score anymore 4199 private void cleanWifiScore() { 4200 mWifiInfo.txBadRate = 0; 4201 mWifiInfo.txSuccessRate = 0; 4202 mWifiInfo.txRetriesRate = 0; 4203 mWifiInfo.rxSuccessRate = 0; 4204 } 4205 4206 int mBadLinkspeedcount = 0; 4207 4208 // For debug, provide information about the last scoring operation 4209 String wifiScoringReport = null; 4210 4211 private void calculateWifiScore(WifiLinkLayerStats stats) { 4212 StringBuilder sb = new StringBuilder(); 4213 4214 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4215 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4216 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4217 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4218 < mWifiConfigStore.badLinkSpeed5); 4219 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4220 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4221 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4222 >= mWifiConfigStore.goodLinkSpeed5); 4223 4224 if (isBadLinkspeed) { 4225 if (mBadLinkspeedcount < 6) 4226 mBadLinkspeedcount++; 4227 } else { 4228 if (mBadLinkspeedcount > 0) 4229 mBadLinkspeedcount--; 4230 } 4231 4232 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4233 if (isGoodLinkspeed) sb.append(" gl"); 4234 4235 /** 4236 * We want to make sure that we use the 24GHz RSSI thresholds if 4237 * there are 2.4GHz scan results 4238 * otherwise we end up lowering the score based on 5GHz values 4239 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4240 * We also might unblacklist the configuation based on 2.4GHz 4241 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4242 */ 4243 boolean use24Thresholds = false; 4244 boolean homeNetworkBoost = false; 4245 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4246 ScanDetailCache scanDetailCache = 4247 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4248 if (currentConfiguration != null && scanDetailCache != null) { 4249 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4250 if (currentConfiguration.visibility != null) { 4251 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4252 && currentConfiguration.visibility.rssi24 4253 >= (currentConfiguration.visibility.rssi5 - 2)) { 4254 use24Thresholds = true; 4255 } 4256 } 4257 if (scanDetailCache.size() <= 6 4258 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4259 && currentConfiguration.allowedKeyManagement. 4260 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4261 // A PSK network with less than 6 known BSSIDs 4262 // This is most likely a home network and thus we want to stick to wifi more 4263 homeNetworkBoost = true; 4264 } 4265 } 4266 if (homeNetworkBoost) sb.append(" hn"); 4267 if (use24Thresholds) sb.append(" u24"); 4268 4269 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4270 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4271 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4272 4273 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4274 4275 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4276 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4277 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4278 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4279 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4280 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4281 4282 if (isBadRSSI) sb.append(" br"); 4283 if (isLowRSSI) sb.append(" lr"); 4284 if (isHighRSSI) sb.append(" hr"); 4285 4286 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4287 if (currentConfiguration != null && 4288 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4289 if (isBadRSSI) { 4290 currentConfiguration.numTicksAtBadRSSI++; 4291 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4292 // We remained associated for a compound amount of time while passing 4293 // traffic, hence loose the corresponding user triggered disabled stats 4294 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4295 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4296 } 4297 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4298 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4299 } 4300 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4301 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4302 } 4303 currentConfiguration.numTicksAtBadRSSI = 0; 4304 } 4305 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4306 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4307 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4308 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4309 score = score - 5; 4310 penalizedDueToUserTriggeredDisconnect = 1; 4311 sb.append(" p1"); 4312 } 4313 } else if (isLowRSSI) { 4314 currentConfiguration.numTicksAtLowRSSI++; 4315 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4316 // We remained associated for a compound amount of time while passing 4317 // traffic, hence loose the corresponding user triggered disabled stats 4318 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4319 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4320 } 4321 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4322 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4323 } 4324 currentConfiguration.numTicksAtLowRSSI = 0; 4325 } 4326 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4327 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4328 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4329 score = score - 5; 4330 penalizedDueToUserTriggeredDisconnect = 2; 4331 sb.append(" p2"); 4332 } 4333 } else if (!isHighRSSI) { 4334 currentConfiguration.numTicksAtNotHighRSSI++; 4335 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4336 // We remained associated for a compound amount of time while passing 4337 // traffic, hence loose the corresponding user triggered disabled stats 4338 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4339 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4340 } 4341 currentConfiguration.numTicksAtNotHighRSSI = 0; 4342 } 4343 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4344 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4345 score = score - 5; 4346 penalizedDueToUserTriggeredDisconnect = 3; 4347 sb.append(" p3"); 4348 } 4349 } 4350 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4351 currentConfiguration.numTicksAtLowRSSI, 4352 currentConfiguration.numTicksAtNotHighRSSI)); 4353 } 4354 4355 if (PDBG) { 4356 String rssiStatus = ""; 4357 if (isBadRSSI) rssiStatus += " badRSSI "; 4358 else if (isHighRSSI) rssiStatus += " highRSSI "; 4359 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4360 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4361 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4362 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4363 + " score=" + Integer.toString(mWifiInfo.score) 4364 + rssiStatus 4365 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4366 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4367 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4368 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4369 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4370 } 4371 4372 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4373 && (isBadRSSI || isLowRSSI)) { 4374 // Link is stuck 4375 if (mWifiInfo.linkStuckCount < 5) 4376 mWifiInfo.linkStuckCount += 1; 4377 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4378 if (PDBG) logd(" bad link -> stuck count =" 4379 + Integer.toString(mWifiInfo.linkStuckCount)); 4380 } else if (mWifiInfo.txBadRate < 0.3) { 4381 if (mWifiInfo.linkStuckCount > 0) 4382 mWifiInfo.linkStuckCount -= 1; 4383 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4384 if (PDBG) logd(" good link -> stuck count =" 4385 + Integer.toString(mWifiInfo.linkStuckCount)); 4386 } 4387 4388 sb.append(String.format(" [%d", score)); 4389 4390 if (mWifiInfo.linkStuckCount > 1) { 4391 // Once link gets stuck for more than 3 seconds, start reducing the score 4392 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4393 } 4394 sb.append(String.format(",%d", score)); 4395 4396 if (isBadLinkspeed) { 4397 score -= 4; 4398 if (PDBG) { 4399 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4400 + " score=" + Integer.toString(score)); 4401 } 4402 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4403 score += 4; // So as bad rssi alone dont kill us 4404 } 4405 sb.append(String.format(",%d", score)); 4406 4407 if (isBadRSSI) { 4408 if (mWifiInfo.badRssiCount < 7) 4409 mWifiInfo.badRssiCount += 1; 4410 } else if (isLowRSSI) { 4411 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4412 if (mWifiInfo.badRssiCount > 0) { 4413 // Decrement bad Rssi count 4414 mWifiInfo.badRssiCount -= 1; 4415 } 4416 } else { 4417 mWifiInfo.badRssiCount = 0; 4418 mWifiInfo.lowRssiCount = 0; 4419 } 4420 4421 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4422 sb.append(String.format(",%d", score)); 4423 4424 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4425 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4426 + " --> score " + Integer.toString(score)); 4427 4428 4429 if (isHighRSSI) { 4430 score += 5; 4431 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4432 } 4433 sb.append(String.format(",%d]", score)); 4434 4435 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4436 4437 //sanitize boundaries 4438 if (score > NetworkAgent.WIFI_BASE_SCORE) 4439 score = NetworkAgent.WIFI_BASE_SCORE; 4440 if (score < 0) 4441 score = 0; 4442 4443 //report score 4444 if (score != mWifiInfo.score) { 4445 if (DBG) { 4446 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4447 } 4448 mWifiInfo.score = score; 4449 if (mNetworkAgent != null) { 4450 mNetworkAgent.sendNetworkScore(score); 4451 } 4452 } 4453 wifiScoringReport = sb.toString(); 4454 } 4455 4456 public double getTxPacketRate() { 4457 if (mWifiInfo != null) { 4458 return mWifiInfo.txSuccessRate; 4459 } 4460 return -1; 4461 } 4462 4463 public double getRxPacketRate() { 4464 if (mWifiInfo != null) { 4465 return mWifiInfo.rxSuccessRate; 4466 } 4467 return -1; 4468 } 4469 4470 /** 4471 * Fetch TX packet counters on current connection 4472 */ 4473 private void fetchPktcntNative(RssiPacketCountInfo info) { 4474 String pktcntPoll = mWifiNative.pktcntPoll(); 4475 4476 if (pktcntPoll != null) { 4477 String[] lines = pktcntPoll.split("\n"); 4478 for (String line : lines) { 4479 String[] prop = line.split("="); 4480 if (prop.length < 2) continue; 4481 try { 4482 if (prop[0].equals("TXGOOD")) { 4483 info.txgood = Integer.parseInt(prop[1]); 4484 } else if (prop[0].equals("TXBAD")) { 4485 info.txbad = Integer.parseInt(prop[1]); 4486 } 4487 } catch (NumberFormatException e) { 4488 // Ignore 4489 } 4490 } 4491 } 4492 } 4493 4494 private boolean clearIPv4Address(String iface) { 4495 try { 4496 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4497 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4498 mNwService.setInterfaceConfig(iface, ifcg); 4499 return true; 4500 } catch (RemoteException e) { 4501 return false; 4502 } 4503 } 4504 4505 private boolean isProvisioned(LinkProperties lp) { 4506 return lp.isProvisioned() || 4507 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4508 } 4509 4510 /** 4511 * Creates a new LinkProperties object by merging information from various sources. 4512 * <p/> 4513 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4514 * netlink, static configuration, ...). When one of these sources of information has updated 4515 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4516 * information that came from other sources. Instead, when one of those sources has new 4517 * information, we update the object that tracks the information from that source and then 4518 * call this method to integrate the change into a new LinkProperties object for subsequent 4519 * comparison with mLinkProperties. 4520 * <p/> 4521 * The information used to build LinkProperties is currently obtained as follows: 4522 * - Interface name: set in the constructor. 4523 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4524 * - IPv4 routes, DNS servers, and domains: DHCP. 4525 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4526 * - HTTP proxy: the wifi config store. 4527 */ 4528 private LinkProperties makeLinkProperties() { 4529 LinkProperties newLp = new LinkProperties(); 4530 4531 // Interface name, proxy, and TCP buffer sizes are locally configured. 4532 newLp.setInterfaceName(mInterfaceName); 4533 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4534 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4535 newLp.setTcpBufferSizes(mTcpBufferSizes); 4536 } 4537 4538 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4539 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4540 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4541 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4542 newLp.addRoute(route); 4543 } 4544 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4545 // Only add likely reachable DNS servers. 4546 // TODO: investigate deleting this. 4547 if (newLp.isReachable(dns)) { 4548 newLp.addDnsServer(dns); 4549 } 4550 } 4551 4552 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4553 synchronized (mDhcpResultsLock) { 4554 // Even when we're using static configuration, we don't need to look at the config 4555 // store, because static IP configuration also populates mDhcpResults. 4556 if ((mDhcpResults != null)) { 4557 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4558 newLp.addRoute(route); 4559 } 4560 for (InetAddress dns : mDhcpResults.dnsServers) { 4561 // Only add likely reachable DNS servers. 4562 // TODO: investigate deleting this. 4563 if (newLp.isReachable(dns)) { 4564 newLp.addDnsServer(dns); 4565 } 4566 } 4567 newLp.setDomains(mDhcpResults.domains); 4568 } 4569 } 4570 4571 return newLp; 4572 } 4573 4574 private void updateLinkProperties(int reason) { 4575 LinkProperties newLp = makeLinkProperties(); 4576 4577 final boolean linkChanged = !newLp.equals(mLinkProperties); 4578 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4579 final boolean isProvisioned = isProvisioned(newLp); 4580 // TODO: Teach LinkProperties how to understand static assignment 4581 // and simplify all this provisioning change detection logic by 4582 // unifying it under LinkProperties.compareProvisioning(). 4583 final boolean lostProvisioning = 4584 (wasProvisioned && !isProvisioned) || 4585 (mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address()) || 4586 (mLinkProperties.isIPv6Provisioned() && !newLp.isIPv6Provisioned()); 4587 final DetailedState detailedState = getNetworkDetailedState(); 4588 4589 if (linkChanged) { 4590 if (DBG) { 4591 log("Link configuration changed for netId: " + mLastNetworkId 4592 + " old: " + mLinkProperties + " new: " + newLp); 4593 } 4594 mLinkProperties = newLp; 4595 if (mIpReachabilityMonitor != null) { 4596 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4597 } 4598 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4599 } 4600 4601 if (lostProvisioning) { 4602 log("Lost IP layer provisioning!" + 4603 " was: " + mLinkProperties + 4604 " now: " + newLp); 4605 } 4606 4607 if (DBG) { 4608 StringBuilder sb = new StringBuilder(); 4609 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4610 sb.append(" state: " + detailedState); 4611 sb.append(" reason: " + smToString(reason)); 4612 4613 if (mLinkProperties != null) { 4614 if (mLinkProperties.hasIPv4Address()) { 4615 sb.append(" v4"); 4616 } 4617 if (mLinkProperties.hasGlobalIPv6Address()) { 4618 sb.append(" v6"); 4619 } 4620 if (mLinkProperties.hasIPv4DefaultRoute()) { 4621 sb.append(" v4r"); 4622 } 4623 if (mLinkProperties.hasIPv6DefaultRoute()) { 4624 sb.append(" v6r"); 4625 } 4626 if (mLinkProperties.hasIPv4DnsServer()) { 4627 sb.append(" v4dns"); 4628 } 4629 if (mLinkProperties.hasIPv6DnsServer()) { 4630 sb.append(" v6dns"); 4631 } 4632 if (isProvisioned) { 4633 sb.append(" isprov"); 4634 } 4635 } 4636 logd(sb.toString()); 4637 } 4638 4639 // If we just configured or lost IP configuration, do the needful. 4640 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4641 // here because those should only be called if we're attempting to connect or already 4642 // connected, whereas updateLinkProperties can be called at any time. 4643 switch (reason) { 4644 case DhcpStateMachine.DHCP_SUCCESS: 4645 case CMD_STATIC_IP_SUCCESS: 4646 // IPv4 provisioning succeded. Advance to connected state. 4647 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4648 if (!isProvisioned) { 4649 // Can never happen unless DHCP reports success but isProvisioned thinks the 4650 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4651 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4652 // TODO: disconnect here instead. If our configuration is not usable, there's no 4653 // point in staying connected, and if mLinkProperties is out of sync with 4654 // reality, that will cause problems in the future. 4655 logd("IPv4 config succeeded, but not provisioned"); 4656 } 4657 break; 4658 4659 case DhcpStateMachine.DHCP_FAILURE: 4660 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4661 // give up and disconnect. 4662 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4663 if (!isProvisioned || lostProvisioning) { 4664 sendMessage(CMD_IP_CONFIGURATION_LOST); 4665 } else { 4666 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4667 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4668 4669 // To be sure we don't get stuck with a non-working network if all we had is 4670 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4671 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4672 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4673 // necessary for provisioning, its deletion will cause us to disconnect. 4674 // 4675 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4676 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4677 // not return true if we're using DHCP and don't have an IPv4 default route. So 4678 // for now it's only here for extra redundancy. However, it will increase 4679 // robustness if we move to getting IPv4 routes from netlink as well. 4680 loge("DHCP failure: provisioned, clearing IPv4 address."); 4681 if (!clearIPv4Address(mInterfaceName)) { 4682 sendMessage(CMD_IP_CONFIGURATION_LOST); 4683 } 4684 } 4685 break; 4686 4687 case CMD_STATIC_IP_FAILURE: 4688 // Static configuration was invalid, or an error occurred in applying it. Give up. 4689 sendMessage(CMD_IP_CONFIGURATION_LOST); 4690 break; 4691 4692 case CMD_UPDATE_LINKPROPERTIES: 4693 // IP addresses, DNS servers, etc. changed. Act accordingly. 4694 if (lostProvisioning) { 4695 // We no longer have a usable network configuration. Disconnect. 4696 sendMessage(CMD_IP_CONFIGURATION_LOST); 4697 } else if (!wasProvisioned && isProvisioned) { 4698 // We have a usable IPv6-only config. Advance to connected state. 4699 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4700 } 4701 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4702 // If anything has changed and we're already connected, send out a notification. 4703 sendLinkConfigurationChangedBroadcast(); 4704 } 4705 break; 4706 } 4707 } 4708 4709 /** 4710 * Clears all our link properties. 4711 */ 4712 private void clearLinkProperties() { 4713 // Clear the link properties obtained from DHCP and netlink. 4714 synchronized (mDhcpResultsLock) { 4715 if (mDhcpResults != null) { 4716 mDhcpResults.clear(); 4717 } 4718 } 4719 mNetlinkTracker.clearLinkProperties(); 4720 if (mIpReachabilityMonitor != null) { 4721 mIpReachabilityMonitor.clearLinkProperties(); 4722 } 4723 4724 // Now clear the merged link properties. 4725 mLinkProperties.clear(); 4726 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4727 } 4728 4729 /** 4730 * try to update default route MAC address. 4731 */ 4732 private String updateDefaultRouteMacAddress(int timeout) { 4733 String address = null; 4734 for (RouteInfo route : mLinkProperties.getRoutes()) { 4735 if (route.isDefaultRoute() && route.hasGateway()) { 4736 InetAddress gateway = route.getGateway(); 4737 if (gateway instanceof Inet4Address) { 4738 if (PDBG) { 4739 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4740 + gateway.getHostAddress()); 4741 } 4742 address = macAddressFromRoute(gateway.getHostAddress()); 4743 /* The gateway's MAC address is known */ 4744 if ((address == null) && (timeout > 0)) { 4745 boolean reachable = false; 4746 try { 4747 reachable = gateway.isReachable(timeout); 4748 } catch (Exception e) { 4749 loge("updateDefaultRouteMacAddress exception reaching :" 4750 + gateway.getHostAddress()); 4751 4752 } finally { 4753 if (reachable == true) { 4754 4755 address = macAddressFromRoute(gateway.getHostAddress()); 4756 if (PDBG) { 4757 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4758 + gateway.getHostAddress() + " found " + address); 4759 } 4760 } 4761 } 4762 } 4763 if (address != null) { 4764 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4765 } 4766 } 4767 } 4768 } 4769 return address; 4770 } 4771 4772 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4773 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4774 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4775 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4776 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4777 } 4778 4779 private void sendRssiChangeBroadcast(final int newRssi) { 4780 try { 4781 mBatteryStats.noteWifiRssiChanged(newRssi); 4782 } catch (RemoteException e) { 4783 // Won't happen. 4784 } 4785 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4786 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4787 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4788 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4789 } 4790 4791 private void sendNetworkStateChangeBroadcast(String bssid) { 4792 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4793 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4794 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4795 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4796 if (bssid != null) 4797 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4798 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4799 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4800 // We no longer report MAC address to third-parties and our code does 4801 // not rely on this broadcast, so just send the default MAC address. 4802 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4803 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4804 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4805 } 4806 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4807 } 4808 4809 private WifiInfo getWiFiInfoForUid(int uid) { 4810 if (Binder.getCallingUid() == Process.myUid()) { 4811 return mWifiInfo; 4812 } 4813 4814 WifiInfo result = new WifiInfo(mWifiInfo); 4815 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4816 4817 IBinder binder = ServiceManager.getService("package"); 4818 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4819 4820 try { 4821 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4822 uid) == PackageManager.PERMISSION_GRANTED) { 4823 result.setMacAddress(mWifiInfo.getMacAddress()); 4824 } 4825 } catch (RemoteException e) { 4826 Log.e(TAG, "Error checking receiver permission", e); 4827 } 4828 4829 return result; 4830 } 4831 4832 private void sendLinkConfigurationChangedBroadcast() { 4833 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4834 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4835 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4836 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4837 } 4838 4839 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4840 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4841 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4842 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4843 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4844 } 4845 4846 /** 4847 * Record the detailed state of a network. 4848 * 4849 * @param state the new {@code DetailedState} 4850 */ 4851 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4852 boolean hidden = false; 4853 4854 if (linkDebouncing || isRoaming()) { 4855 // There is generally a confusion in the system about colluding 4856 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4857 // which leads to multiple confusion. 4858 // 4859 // If link is de-bouncing or roaming, we already have an IP address 4860 // as well we were connected and are doing L2 cycles of 4861 // reconnecting or renewing IP address to check that we still have it 4862 // This L2 link flapping should ne be reflected into the Network state 4863 // which is the state of the WiFi Network visible to Layer 3 and applications 4864 // Note that once debouncing and roaming are completed, we will 4865 // set the Network state to where it should be, or leave it as unchanged 4866 // 4867 hidden = true; 4868 } 4869 if (DBG) { 4870 log("setDetailed state, old =" 4871 + mNetworkInfo.getDetailedState() + " and new state=" + state 4872 + " hidden=" + hidden); 4873 } 4874 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4875 // Always indicate that SSID has changed 4876 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4877 if (DBG) { 4878 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4879 } 4880 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4881 sendNetworkStateChangeBroadcast(null); 4882 } 4883 } 4884 if (hidden == true) { 4885 return false; 4886 } 4887 4888 if (state != mNetworkInfo.getDetailedState()) { 4889 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4890 if (mNetworkAgent != null) { 4891 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4892 } 4893 sendNetworkStateChangeBroadcast(null); 4894 return true; 4895 } 4896 return false; 4897 } 4898 4899 private DetailedState getNetworkDetailedState() { 4900 return mNetworkInfo.getDetailedState(); 4901 } 4902 4903 private SupplicantState handleSupplicantStateChange(Message message) { 4904 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4905 SupplicantState state = stateChangeResult.state; 4906 // Supplicant state change 4907 // [31-13] Reserved for future use 4908 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4909 // 50023 supplicant_state_changed (custom|1|5) 4910 mWifiInfo.setSupplicantState(state); 4911 // Network id is only valid when we start connecting 4912 if (SupplicantState.isConnecting(state)) { 4913 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4914 } else { 4915 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4916 } 4917 4918 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4919 4920 if (mWhiteListedSsids != null 4921 && mWhiteListedSsids.length > 0 4922 && stateChangeResult.wifiSsid != null) { 4923 String SSID = stateChangeResult.wifiSsid.toString(); 4924 String currentSSID = mWifiInfo.getSSID(); 4925 if (SSID != null 4926 && currentSSID != null 4927 && !SSID.equals(WifiSsid.NONE)) { 4928 // Remove quote before comparing 4929 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4930 && SSID.charAt(SSID.length() - 1) == '"') 4931 { 4932 SSID = SSID.substring(1, SSID.length() - 1); 4933 } 4934 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4935 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4936 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4937 } 4938 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4939 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4940 targetWificonfiguration 4941 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4942 transitionTo(mRoamingState); 4943 } 4944 } 4945 } 4946 4947 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4948 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4949 4950 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4951 4952 return state; 4953 } 4954 4955 /** 4956 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4957 * using the interface, stopping DHCP & disabling interface 4958 */ 4959 private void handleNetworkDisconnect() { 4960 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4961 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4962 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4963 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4964 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4965 4966 stopRssiMonitoringOffload(); 4967 4968 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4969 4970 stopDhcp(); 4971 4972 try { 4973 mNwService.clearInterfaceAddresses(mInterfaceName); 4974 mNwService.disableIpv6(mInterfaceName); 4975 } catch (Exception e) { 4976 loge("Failed to clear addresses or disable ipv6" + e); 4977 } 4978 4979 /* Reset data structures */ 4980 mBadLinkspeedcount = 0; 4981 mWifiInfo.reset(); 4982 linkDebouncing = false; 4983 /* Reset roaming parameters */ 4984 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4985 4986 /** 4987 * fullBandConnectedTimeIntervalMilli: 4988 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4989 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4990 * Initialize to sane value = 20 seconds 4991 */ 4992 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4993 4994 setNetworkDetailedState(DetailedState.DISCONNECTED); 4995 if (mNetworkAgent != null) { 4996 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4997 mNetworkAgent = null; 4998 } 4999 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 5000 5001 /* Clear network properties */ 5002 clearLinkProperties(); 5003 5004 /* Cend event to CM & network change broadcast */ 5005 sendNetworkStateChangeBroadcast(mLastBssid); 5006 5007 /* Cancel auto roam requests */ 5008 autoRoamSetBSSID(mLastNetworkId, "any"); 5009 5010 mLastBssid = null; 5011 registerDisconnected(); 5012 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5013 } 5014 5015 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 5016 /* Socket connection can be lost when we do a graceful shutdown 5017 * or when the driver is hung. Ensure supplicant is stopped here. 5018 */ 5019 if (killSupplicant) { 5020 mWifiMonitor.killSupplicant(mP2pSupported); 5021 } 5022 mWifiNative.closeSupplicantConnection(); 5023 sendSupplicantConnectionChangedBroadcast(false); 5024 setWifiState(WIFI_STATE_DISABLED); 5025 } 5026 5027 void handlePreDhcpSetup() { 5028 mDhcpActive = true; 5029 if (!mBluetoothConnectionActive) { 5030 /* 5031 * There are problems setting the Wi-Fi driver's power 5032 * mode to active when bluetooth coexistence mode is 5033 * enabled or sense. 5034 * <p> 5035 * We set Wi-Fi to active mode when 5036 * obtaining an IP address because we've found 5037 * compatibility issues with some routers with low power 5038 * mode. 5039 * <p> 5040 * In order for this active power mode to properly be set, 5041 * we disable coexistence mode until we're done with 5042 * obtaining an IP address. One exception is if we 5043 * are currently connected to a headset, since disabling 5044 * coexistence would interrupt that connection. 5045 */ 5046 // Disable the coexistence mode 5047 mWifiNative.setBluetoothCoexistenceMode( 5048 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 5049 } 5050 5051 // Disable power save and suspend optimizations during DHCP 5052 // Note: The order here is important for now. Brcm driver changes 5053 // power settings when we control suspend mode optimizations. 5054 // TODO: Remove this comment when the driver is fixed. 5055 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 5056 mWifiNative.setPowerSave(false); 5057 5058 // Update link layer stats 5059 getWifiLinkLayerStats(false); 5060 5061 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 5062 Message msg = new Message(); 5063 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 5064 msg.arg1 = WifiP2pServiceImpl.ENABLED; 5065 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 5066 msg.obj = mDhcpStateMachine; 5067 mWifiP2pChannel.sendMessage(msg); 5068 } 5069 5070 5071 private boolean useLegacyDhcpClient() { 5072 return Settings.Global.getInt( 5073 mContext.getContentResolver(), 5074 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 5075 } 5076 5077 private void maybeInitDhcpStateMachine() { 5078 if (mDhcpStateMachine == null) { 5079 if (useLegacyDhcpClient()) { 5080 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 5081 mContext, WifiStateMachine.this, mInterfaceName); 5082 } else { 5083 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 5084 mContext, WifiStateMachine.this, mInterfaceName); 5085 } 5086 } 5087 } 5088 5089 void startDhcp() { 5090 maybeInitDhcpStateMachine(); 5091 mDhcpStateMachine.registerForPreDhcpNotification(); 5092 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 5093 } 5094 5095 void renewDhcp() { 5096 maybeInitDhcpStateMachine(); 5097 mDhcpStateMachine.registerForPreDhcpNotification(); 5098 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 5099 } 5100 5101 void stopDhcp() { 5102 if (mDhcpStateMachine != null) { 5103 /* In case we were in middle of DHCP operation restore back powermode */ 5104 handlePostDhcpSetup(); 5105 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 5106 } 5107 } 5108 5109 void handlePostDhcpSetup() { 5110 /* Restore power save and suspend optimizations */ 5111 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 5112 mWifiNative.setPowerSave(true); 5113 5114 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 5115 5116 // Set the coexistence mode back to its default value 5117 mWifiNative.setBluetoothCoexistenceMode( 5118 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 5119 5120 mDhcpActive = false; 5121 } 5122 5123 void connectScanningService() { 5124 5125 if (mWifiScanner == null) { 5126 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 5127 } 5128 } 5129 5130 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 5131 5132 if (PDBG) { 5133 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 5134 logd("link address " + dhcpResults.ipAddress); 5135 } 5136 5137 Inet4Address addr; 5138 synchronized (mDhcpResultsLock) { 5139 mDhcpResults = dhcpResults; 5140 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5141 } 5142 5143 if (isRoaming()) { 5144 int previousAddress = mWifiInfo.getIpAddress(); 5145 int newAddress = NetworkUtils.inetAddressToInt(addr); 5146 if (previousAddress != newAddress) { 5147 logd("handleIPv4Success, roaming and address changed" + 5148 mWifiInfo + " got: " + addr); 5149 } 5150 } 5151 mWifiInfo.setInetAddress(addr); 5152 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5153 updateLinkProperties(reason); 5154 } 5155 5156 private void handleSuccessfulIpConfiguration() { 5157 mLastSignalLevel = -1; // Force update of signal strength 5158 WifiConfiguration c = getCurrentWifiConfiguration(); 5159 if (c != null) { 5160 // Reset IP failure tracking 5161 c.numConnectionFailures = 0; 5162 5163 // Tell the framework whether the newly connected network is trusted or untrusted. 5164 updateCapabilities(c); 5165 } 5166 if (c != null) { 5167 ScanResult result = getCurrentScanResult(); 5168 if (result == null) { 5169 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5170 c.configKey()); 5171 } else { 5172 // Clear the per BSSID failure count 5173 result.numIpConfigFailures = 0; 5174 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5175 // any BSSID, even though it may already have a non zero ip failure count, 5176 // this will typically happen if the user walks away and come back to his arrea 5177 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5178 // in supplicant for a couple of hours or a day 5179 mWifiConfigStore.clearBssidBlacklist(); 5180 } 5181 } 5182 } 5183 5184 private void handleIPv4Failure(int reason) { 5185 synchronized(mDhcpResultsLock) { 5186 if (mDhcpResults != null) { 5187 mDhcpResults.clear(); 5188 } 5189 } 5190 if (PDBG) { 5191 logd("handleIPv4Failure"); 5192 } 5193 updateLinkProperties(reason); 5194 } 5195 5196 private void handleIpConfigurationLost() { 5197 mWifiInfo.setInetAddress(null); 5198 mWifiInfo.setMeteredHint(false); 5199 5200 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5201 "DHCP FAILURE", mWifiInfo.getBSSID()); 5202 5203 /* DHCP times out after about 30 seconds, we do a 5204 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5205 */ 5206 mWifiNative.disconnect(); 5207 } 5208 5209 // TODO: De-duplicated this and handleIpConfigurationLost(). 5210 private void handleIpReachabilityLost() { 5211 // No need to be told about any additional neighbors that might also 5212 // become unreachable--quiet them now while we start disconnecting. 5213 if (mIpReachabilityMonitor != null) { 5214 mIpReachabilityMonitor.clearLinkProperties(); 5215 } 5216 5217 mWifiInfo.setInetAddress(null); 5218 mWifiInfo.setMeteredHint(false); 5219 5220 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5221 5222 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5223 mWifiNative.disconnect(); 5224 } 5225 5226 private int convertFrequencyToChannelNumber(int frequency) { 5227 if (frequency >= 2412 && frequency <= 2484) { 5228 return (frequency -2412) / 5 + 1; 5229 } else if (frequency >= 5170 && frequency <=5825) { 5230 //DFS is included 5231 return (frequency -5170) / 5 + 34; 5232 } else { 5233 return 0; 5234 } 5235 } 5236 5237 private int chooseApChannel(int apBand) { 5238 int apChannel; 5239 int[] channel; 5240 5241 if (apBand == 0) { 5242 if (mWifiApConfigStore.allowed2GChannel == null || 5243 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5244 //most safe channel to use 5245 if(DBG) { 5246 Log.d(TAG, "No specified 2G allowed channel list"); 5247 } 5248 apChannel = 6; 5249 } else { 5250 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5251 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5252 } 5253 } else { 5254 //5G without DFS 5255 channel = mWifiNative.getChannelsForBand(2); 5256 if (channel != null && channel.length > 0) { 5257 apChannel = channel[mRandom.nextInt(channel.length)]; 5258 apChannel = convertFrequencyToChannelNumber(apChannel); 5259 } else { 5260 Log.e(TAG, "SoftAp do not get available channel list"); 5261 apChannel = 0; 5262 } 5263 } 5264 5265 if(DBG) { 5266 Log.d(TAG, "SoftAp set on channel " + apChannel); 5267 } 5268 5269 return apChannel; 5270 } 5271 5272 /* SoftAP configuration */ 5273 private boolean enableSoftAp() { 5274 if (WifiNative.getInterfaces() != 0) { 5275 if (!mWifiNative.toggleInterface(0)) { 5276 if (DBG) Log.e(TAG, "toggleInterface failed"); 5277 return false; 5278 } 5279 } else { 5280 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5281 } 5282 5283 try { 5284 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5285 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5286 } catch (Exception e) { 5287 Log.e(TAG, "Failed to reload AP firmware " + e); 5288 } 5289 5290 if (WifiNative.startHal() == false) { 5291 /* starting HAL is optional */ 5292 Log.e(TAG, "Failed to start HAL"); 5293 } 5294 return true; 5295 } 5296 5297 /* Current design is to not set the config on a running hostapd but instead 5298 * stop and start tethering when user changes config on a running access point 5299 * 5300 * TODO: Add control channel setup through hostapd that allows changing config 5301 * on a running daemon 5302 */ 5303 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5304 // set channel 5305 final WifiConfiguration config = new WifiConfiguration(configuration); 5306 5307 if (DBG) { 5308 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5309 } 5310 5311 //We need HAL support to set country code and get available channel list, if HAL is 5312 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5313 if (mWifiNative.isHalStarted()) { 5314 //set country code through HAL Here 5315 String countryCode = getCurrentCountryCode(); 5316 5317 if (countryCode != null) { 5318 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5319 if (config.apBand != 0) { 5320 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5321 //countrycode is mandatory for 5GHz 5322 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5323 return; 5324 } 5325 } 5326 } else { 5327 if (config.apBand != 0) { 5328 //countrycode is mandatory for 5GHz 5329 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5330 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5331 return; 5332 } 5333 } 5334 5335 if (config.apChannel == 0) { 5336 config.apChannel = chooseApChannel(config.apBand); 5337 if (config.apChannel == 0) { 5338 if(mWifiNative.isGetChannelsForBandSupported()) { 5339 //fail to get available channel 5340 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5341 return; 5342 } else { 5343 //for some old device, wifiHal may not be supportedget valid channels are not 5344 //supported 5345 config.apBand = 0; 5346 config.apChannel = 6; 5347 } 5348 } 5349 } 5350 } else { 5351 //for some old device, wifiHal may not be supported 5352 config.apBand = 0; 5353 config.apChannel = 6; 5354 } 5355 // Start hostapd on a separate thread 5356 new Thread(new Runnable() { 5357 public void run() { 5358 try { 5359 mNwService.startAccessPoint(config, mInterfaceName); 5360 } catch (Exception e) { 5361 loge("Exception in softap start " + e); 5362 try { 5363 mNwService.stopAccessPoint(mInterfaceName); 5364 mNwService.startAccessPoint(config, mInterfaceName); 5365 } catch (Exception e1) { 5366 loge("Exception in softap re-start " + e1); 5367 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5368 return; 5369 } 5370 } 5371 if (DBG) log("Soft AP start successful"); 5372 sendMessage(CMD_START_AP_SUCCESS); 5373 } 5374 }).start(); 5375 } 5376 5377 private byte[] macAddressFromString(String macString) { 5378 String[] macBytes = macString.split(":"); 5379 if (macBytes.length != 6) { 5380 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5381 } 5382 byte[] mac = new byte[6]; 5383 for (int i = 0; i < macBytes.length; i++) { 5384 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5385 mac[i] = hexVal.byteValue(); 5386 } 5387 return mac; 5388 } 5389 5390 /* 5391 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5392 * so as to record MAC address of default gateway. 5393 **/ 5394 private String macAddressFromRoute(String ipAddress) { 5395 String macAddress = null; 5396 BufferedReader reader = null; 5397 try { 5398 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5399 5400 // Skip over the line bearing colum titles 5401 String line = reader.readLine(); 5402 5403 while ((line = reader.readLine()) != null) { 5404 String[] tokens = line.split("[ ]+"); 5405 if (tokens.length < 6) { 5406 continue; 5407 } 5408 5409 // ARP column format is 5410 // Address HWType HWAddress Flags Mask IFace 5411 String ip = tokens[0]; 5412 String mac = tokens[3]; 5413 5414 if (ipAddress.equals(ip)) { 5415 macAddress = mac; 5416 break; 5417 } 5418 } 5419 5420 if (macAddress == null) { 5421 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5422 "/proc/net/arp"); 5423 } 5424 5425 } catch (FileNotFoundException e) { 5426 loge("Could not open /proc/net/arp to lookup mac address"); 5427 } catch (IOException e) { 5428 loge("Could not read /proc/net/arp to lookup mac address"); 5429 } finally { 5430 try { 5431 if (reader != null) { 5432 reader.close(); 5433 } 5434 } catch (IOException e) { 5435 // Do nothing 5436 } 5437 } 5438 return macAddress; 5439 5440 } 5441 5442 private class WifiNetworkFactory extends NetworkFactory { 5443 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5444 super(l, c, TAG, f); 5445 } 5446 5447 @Override 5448 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5449 ++mConnectionRequests; 5450 } 5451 5452 @Override 5453 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5454 --mConnectionRequests; 5455 } 5456 5457 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5458 pw.println("mConnectionRequests " + mConnectionRequests); 5459 } 5460 5461 } 5462 5463 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5464 private int mUntrustedReqCount; 5465 5466 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5467 super(l, c, tag, f); 5468 } 5469 5470 @Override 5471 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5472 if (!networkRequest.networkCapabilities.hasCapability( 5473 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5474 if (++mUntrustedReqCount == 1) { 5475 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5476 } 5477 } 5478 } 5479 5480 @Override 5481 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5482 if (!networkRequest.networkCapabilities.hasCapability( 5483 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5484 if (--mUntrustedReqCount == 0) { 5485 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5486 } 5487 } 5488 } 5489 5490 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5491 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5492 } 5493 } 5494 5495 void maybeRegisterNetworkFactory() { 5496 if (mNetworkFactory == null) { 5497 checkAndSetConnectivityInstance(); 5498 if (mCm != null) { 5499 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5500 NETWORKTYPE, mNetworkCapabilitiesFilter); 5501 mNetworkFactory.setScoreFilter(60); 5502 mNetworkFactory.register(); 5503 5504 // We can't filter untrusted network in the capabilities filter because a trusted 5505 // network would still satisfy a request that accepts untrusted ones. 5506 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5507 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5508 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5509 mUntrustedNetworkFactory.register(); 5510 } 5511 } 5512 } 5513 5514 /******************************************************** 5515 * HSM states 5516 *******************************************************/ 5517 5518 class DefaultState extends State { 5519 @Override 5520 public boolean processMessage(Message message) { 5521 logStateAndMessage(message, this); 5522 5523 switch (message.what) { 5524 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5525 AsyncChannel ac = (AsyncChannel) message.obj; 5526 if (ac == mWifiP2pChannel) { 5527 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5528 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5529 } else { 5530 loge("WifiP2pService connection failure, error=" + message.arg1); 5531 } 5532 } else { 5533 loge("got HALF_CONNECTED for unknown channel"); 5534 } 5535 break; 5536 } 5537 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5538 AsyncChannel ac = (AsyncChannel) message.obj; 5539 if (ac == mWifiP2pChannel) { 5540 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5541 //TODO: Re-establish connection to state machine after a delay 5542 // mWifiP2pChannel.connect(mContext, getHandler(), 5543 // mWifiP2pManager.getMessenger()); 5544 } 5545 break; 5546 } 5547 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5548 mBluetoothConnectionActive = (message.arg1 != 5549 BluetoothAdapter.STATE_DISCONNECTED); 5550 break; 5551 /* Synchronous call returns */ 5552 case CMD_PING_SUPPLICANT: 5553 case CMD_ENABLE_NETWORK: 5554 case CMD_ADD_OR_UPDATE_NETWORK: 5555 case CMD_REMOVE_NETWORK: 5556 case CMD_SAVE_CONFIG: 5557 replyToMessage(message, message.what, FAILURE); 5558 break; 5559 case CMD_GET_CAPABILITY_FREQ: 5560 replyToMessage(message, message.what, null); 5561 break; 5562 case CMD_GET_CONFIGURED_NETWORKS: 5563 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5564 break; 5565 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5566 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5567 break; 5568 case CMD_ENABLE_RSSI_POLL: 5569 mEnableRssiPolling = (message.arg1 == 1); 5570 break; 5571 case CMD_SET_HIGH_PERF_MODE: 5572 if (message.arg1 == 1) { 5573 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5574 } else { 5575 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5576 } 5577 break; 5578 case CMD_BOOT_COMPLETED: 5579 maybeRegisterNetworkFactory(); 5580 break; 5581 case CMD_SCREEN_STATE_CHANGED: 5582 handleScreenStateChanged(message.arg1 != 0); 5583 break; 5584 /* Discard */ 5585 case CMD_START_SCAN: 5586 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5587 break; 5588 case CMD_START_SUPPLICANT: 5589 case CMD_STOP_SUPPLICANT: 5590 case CMD_STOP_SUPPLICANT_FAILED: 5591 case CMD_START_DRIVER: 5592 case CMD_STOP_DRIVER: 5593 case CMD_DELAYED_STOP_DRIVER: 5594 case CMD_DRIVER_START_TIMED_OUT: 5595 case CMD_START_AP: 5596 case CMD_START_AP_SUCCESS: 5597 case CMD_START_AP_FAILURE: 5598 case CMD_STOP_AP: 5599 case CMD_TETHER_STATE_CHANGE: 5600 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5601 case CMD_DISCONNECT: 5602 case CMD_RECONNECT: 5603 case CMD_REASSOCIATE: 5604 case CMD_RELOAD_TLS_AND_RECONNECT: 5605 case WifiMonitor.SUP_CONNECTION_EVENT: 5606 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5607 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5608 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5609 case WifiMonitor.SCAN_RESULTS_EVENT: 5610 case WifiMonitor.SCAN_FAILED_EVENT: 5611 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5612 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5613 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5614 case WifiMonitor.WPS_OVERLAP_EVENT: 5615 case CMD_BLACKLIST_NETWORK: 5616 case CMD_CLEAR_BLACKLIST: 5617 case CMD_SET_OPERATIONAL_MODE: 5618 case CMD_SET_FREQUENCY_BAND: 5619 case CMD_RSSI_POLL: 5620 case CMD_ENABLE_ALL_NETWORKS: 5621 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5622 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5623 /* Handled by WifiApConfigStore */ 5624 case CMD_SET_AP_CONFIG: 5625 case CMD_SET_AP_CONFIG_COMPLETED: 5626 case CMD_REQUEST_AP_CONFIG: 5627 case CMD_RESPONSE_AP_CONFIG: 5628 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5629 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5630 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5631 case CMD_DISABLE_P2P_RSP: 5632 case WifiMonitor.SUP_REQUEST_IDENTITY: 5633 case CMD_TEST_NETWORK_DISCONNECT: 5634 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5635 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5636 case CMD_TARGET_BSSID: 5637 case CMD_AUTO_CONNECT: 5638 case CMD_AUTO_ROAM: 5639 case CMD_AUTO_SAVE_NETWORK: 5640 case CMD_ASSOCIATED_BSSID: 5641 case CMD_UNWANTED_NETWORK: 5642 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5643 case CMD_ROAM_WATCHDOG_TIMER: 5644 case CMD_DISABLE_EPHEMERAL_NETWORK: 5645 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5646 case CMD_STARTED_PNO_DBG: 5647 case CMD_STARTED_GSCAN_DBG: 5648 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5649 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5650 break; 5651 case CMD_SET_COUNTRY_CODE: 5652 String country = (String) message.obj; 5653 final boolean persist = (message.arg2 == 1); 5654 final int sequence = message.arg1; 5655 if (sequence != mCountryCodeSequence.get()) { 5656 if (DBG) log("set country code ignored due to sequnce num"); 5657 break; 5658 } 5659 5660 if (persist) { 5661 country = country.toUpperCase(Locale.ROOT); 5662 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5663 Settings.Global.putString(mContext.getContentResolver(), 5664 Settings.Global.WIFI_COUNTRY_CODE, 5665 country == null ? "" : country); 5666 } 5667 5668 break; 5669 case DhcpStateMachine.CMD_ON_QUIT: 5670 mDhcpStateMachine = null; 5671 break; 5672 case CMD_SET_SUSPEND_OPT_ENABLED: 5673 if (message.arg1 == 1) { 5674 mSuspendWakeLock.release(); 5675 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5676 } else { 5677 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5678 } 5679 break; 5680 case WifiMonitor.DRIVER_HUNG_EVENT: 5681 setSupplicantRunning(false); 5682 setSupplicantRunning(true); 5683 break; 5684 case WifiManager.CONNECT_NETWORK: 5685 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5686 WifiManager.BUSY); 5687 break; 5688 case WifiManager.FORGET_NETWORK: 5689 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5690 WifiManager.BUSY); 5691 break; 5692 case WifiManager.SAVE_NETWORK: 5693 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5694 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5695 WifiManager.BUSY); 5696 break; 5697 case WifiManager.START_WPS: 5698 replyToMessage(message, WifiManager.WPS_FAILED, 5699 WifiManager.BUSY); 5700 break; 5701 case WifiManager.CANCEL_WPS: 5702 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5703 WifiManager.BUSY); 5704 break; 5705 case WifiManager.DISABLE_NETWORK: 5706 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5707 WifiManager.BUSY); 5708 break; 5709 case WifiManager.RSSI_PKTCNT_FETCH: 5710 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5711 WifiManager.BUSY); 5712 break; 5713 case CMD_GET_SUPPORTED_FEATURES: 5714 int featureSet = WifiNative.getSupportedFeatureSet(); 5715 replyToMessage(message, message.what, featureSet); 5716 break; 5717 case CMD_FIRMWARE_ALERT: 5718 if (mWifiLogger != null) { 5719 byte[] buffer = (byte[])message.obj; 5720 mWifiLogger.captureAlertData(message.arg1, buffer); 5721 } 5722 break; 5723 case CMD_GET_LINK_LAYER_STATS: 5724 // Not supported hence reply with error message 5725 replyToMessage(message, message.what, null); 5726 break; 5727 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5728 NetworkInfo info = (NetworkInfo) message.obj; 5729 mP2pConnected.set(info.isConnected()); 5730 break; 5731 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5732 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5733 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5734 break; 5735 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5736 case CMD_UPDATE_LINKPROPERTIES: 5737 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5738 break; 5739 case CMD_GET_MATCHING_CONFIG: 5740 replyToMessage(message, message.what); 5741 break; 5742 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5743 case CMD_IP_CONFIGURATION_LOST: 5744 case CMD_IP_REACHABILITY_LOST: 5745 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5746 break; 5747 case CMD_GET_CONNECTION_STATISTICS: 5748 replyToMessage(message, message.what, mWifiConnectionStatistics); 5749 break; 5750 case CMD_REMOVE_APP_CONFIGURATIONS: 5751 deferMessage(message); 5752 break; 5753 case CMD_REMOVE_USER_CONFIGURATIONS: 5754 deferMessage(message); 5755 break; 5756 case CMD_START_IP_PACKET_OFFLOAD: 5757 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5758 message.arg1, 5759 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5760 break; 5761 case CMD_STOP_IP_PACKET_OFFLOAD: 5762 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5763 message.arg1, 5764 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5765 break; 5766 case CMD_START_RSSI_MONITORING_OFFLOAD: 5767 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5768 break; 5769 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5770 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5771 break; 5772 default: 5773 loge("Error! unhandled message" + message); 5774 break; 5775 } 5776 return HANDLED; 5777 } 5778 } 5779 5780 class InitialState extends State { 5781 @Override 5782 public void enter() { 5783 WifiNative.stopHal(); 5784 mWifiNative.unloadDriver(); 5785 if (mWifiP2pChannel == null) { 5786 mWifiP2pChannel = new AsyncChannel(); 5787 mWifiP2pChannel.connect(mContext, getHandler(), 5788 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5789 } 5790 5791 if (mWifiApConfigChannel == null) { 5792 mWifiApConfigChannel = new AsyncChannel(); 5793 mWifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5794 mContext, getHandler()); 5795 mWifiApConfigStore.loadApConfiguration(); 5796 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5797 mWifiApConfigStore.getMessenger()); 5798 } 5799 5800 if (mWifiConfigStore.enableHalBasedPno.get()) { 5801 // make sure developer Settings are in sync with the config option 5802 mHalBasedPnoEnableInDevSettings = true; 5803 } 5804 } 5805 @Override 5806 public boolean processMessage(Message message) { 5807 logStateAndMessage(message, this); 5808 switch (message.what) { 5809 case CMD_START_SUPPLICANT: 5810 if (mWifiNative.loadDriver()) { 5811 try { 5812 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5813 } catch (Exception e) { 5814 loge("Failed to reload STA firmware " + e); 5815 // Continue 5816 } 5817 5818 try { 5819 // A runtime crash can leave the interface up and 5820 // IP addresses configured, and this affects 5821 // connectivity when supplicant starts up. 5822 // Ensure interface is down and we have no IP 5823 // addresses before a supplicant start. 5824 mNwService.setInterfaceDown(mInterfaceName); 5825 mNwService.clearInterfaceAddresses(mInterfaceName); 5826 5827 // Set privacy extensions 5828 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5829 5830 // IPv6 is enabled only as long as access point is connected since: 5831 // - IPv6 addresses and routes stick around after disconnection 5832 // - kernel is unaware when connected and fails to start IPv6 negotiation 5833 // - kernel can start autoconfiguration when 802.1x is not complete 5834 mNwService.disableIpv6(mInterfaceName); 5835 } catch (RemoteException re) { 5836 loge("Unable to change interface settings: " + re); 5837 } catch (IllegalStateException ie) { 5838 loge("Unable to change interface settings: " + ie); 5839 } 5840 5841 /* Stop a running supplicant after a runtime restart 5842 * Avoids issues with drivers that do not handle interface down 5843 * on a running supplicant properly. 5844 */ 5845 mWifiMonitor.killSupplicant(mP2pSupported); 5846 5847 if (WifiNative.startHal() == false) { 5848 /* starting HAL is optional */ 5849 loge("Failed to start HAL"); 5850 } 5851 5852 if (mWifiNative.startSupplicant(mP2pSupported)) { 5853 setWifiState(WIFI_STATE_ENABLING); 5854 if (DBG) log("Supplicant start successful"); 5855 mWifiMonitor.startMonitoring(); 5856 transitionTo(mSupplicantStartingState); 5857 } else { 5858 loge("Failed to start supplicant!"); 5859 } 5860 } else { 5861 loge("Failed to load driver"); 5862 } 5863 break; 5864 case CMD_START_AP: 5865 if (mWifiNative.loadDriver() == false) { 5866 loge("Failed to load driver for softap"); 5867 } else { 5868 if (enableSoftAp() == true) { 5869 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5870 transitionTo(mSoftApStartingState); 5871 } else { 5872 setWifiApState(WIFI_AP_STATE_FAILED, 5873 WifiManager.SAP_START_FAILURE_GENERAL); 5874 transitionTo(mInitialState); 5875 } 5876 } 5877 break; 5878 default: 5879 return NOT_HANDLED; 5880 } 5881 return HANDLED; 5882 } 5883 } 5884 5885 class SupplicantStartingState extends State { 5886 private void initializeWpsDetails() { 5887 String detail; 5888 detail = SystemProperties.get("ro.product.name", ""); 5889 if (!mWifiNative.setDeviceName(detail)) { 5890 loge("Failed to set device name " + detail); 5891 } 5892 detail = SystemProperties.get("ro.product.manufacturer", ""); 5893 if (!mWifiNative.setManufacturer(detail)) { 5894 loge("Failed to set manufacturer " + detail); 5895 } 5896 detail = SystemProperties.get("ro.product.model", ""); 5897 if (!mWifiNative.setModelName(detail)) { 5898 loge("Failed to set model name " + detail); 5899 } 5900 detail = SystemProperties.get("ro.product.model", ""); 5901 if (!mWifiNative.setModelNumber(detail)) { 5902 loge("Failed to set model number " + detail); 5903 } 5904 detail = SystemProperties.get("ro.serialno", ""); 5905 if (!mWifiNative.setSerialNumber(detail)) { 5906 loge("Failed to set serial number " + detail); 5907 } 5908 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5909 loge("Failed to set WPS config methods"); 5910 } 5911 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5912 loge("Failed to set primary device type " + mPrimaryDeviceType); 5913 } 5914 } 5915 5916 @Override 5917 public boolean processMessage(Message message) { 5918 logStateAndMessage(message, this); 5919 5920 switch(message.what) { 5921 case WifiMonitor.SUP_CONNECTION_EVENT: 5922 if (DBG) log("Supplicant connection established"); 5923 setWifiState(WIFI_STATE_ENABLED); 5924 mSupplicantRestartCount = 0; 5925 /* Reset the supplicant state to indicate the supplicant 5926 * state is not known at this time */ 5927 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5928 /* Initialize data structures */ 5929 mLastBssid = null; 5930 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5931 mLastSignalLevel = -1; 5932 5933 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5934 /* set frequency band of operation */ 5935 setFrequencyBand(); 5936 mWifiNative.enableSaveConfig(); 5937 mWifiConfigStore.loadAndEnableAllNetworks(); 5938 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5939 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5940 } 5941 initializeWpsDetails(); 5942 5943 sendSupplicantConnectionChangedBroadcast(true); 5944 transitionTo(mDriverStartedState); 5945 break; 5946 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5947 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5948 loge("Failed to setup control channel, restart supplicant"); 5949 mWifiMonitor.killSupplicant(mP2pSupported); 5950 transitionTo(mInitialState); 5951 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5952 } else { 5953 loge("Failed " + mSupplicantRestartCount + 5954 " times to start supplicant, unload driver"); 5955 mSupplicantRestartCount = 0; 5956 setWifiState(WIFI_STATE_UNKNOWN); 5957 transitionTo(mInitialState); 5958 } 5959 break; 5960 case CMD_START_SUPPLICANT: 5961 case CMD_STOP_SUPPLICANT: 5962 case CMD_START_AP: 5963 case CMD_STOP_AP: 5964 case CMD_START_DRIVER: 5965 case CMD_STOP_DRIVER: 5966 case CMD_SET_OPERATIONAL_MODE: 5967 case CMD_SET_COUNTRY_CODE: 5968 case CMD_SET_FREQUENCY_BAND: 5969 case CMD_START_PACKET_FILTERING: 5970 case CMD_STOP_PACKET_FILTERING: 5971 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5972 deferMessage(message); 5973 break; 5974 default: 5975 return NOT_HANDLED; 5976 } 5977 return HANDLED; 5978 } 5979 } 5980 5981 class SupplicantStartedState extends State { 5982 @Override 5983 public void enter() { 5984 /* Wifi is available as long as we have a connection to supplicant */ 5985 mNetworkInfo.setIsAvailable(true); 5986 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5987 5988 int defaultInterval = mContext.getResources().getInteger( 5989 R.integer.config_wifi_supplicant_scan_interval); 5990 5991 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5992 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5993 defaultInterval); 5994 5995 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5996 mWifiNative.setExternalSim(true); 5997 5998 /* turn on use of DFS channels */ 5999 WifiNative.setDfsFlag(true); 6000 6001 /* set country code */ 6002 initializeCountryCode(); 6003 6004 setRandomMacOui(); 6005 mWifiNative.enableAutoConnect(false); 6006 } 6007 6008 @Override 6009 public boolean processMessage(Message message) { 6010 logStateAndMessage(message, this); 6011 6012 switch(message.what) { 6013 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 6014 if (mP2pSupported) { 6015 transitionTo(mWaitForP2pDisableState); 6016 } else { 6017 transitionTo(mSupplicantStoppingState); 6018 } 6019 break; 6020 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 6021 loge("Connection lost, restart supplicant"); 6022 handleSupplicantConnectionLoss(true); 6023 handleNetworkDisconnect(); 6024 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6025 if (mP2pSupported) { 6026 transitionTo(mWaitForP2pDisableState); 6027 } else { 6028 transitionTo(mInitialState); 6029 } 6030 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 6031 break; 6032 case WifiMonitor.SCAN_RESULTS_EVENT: 6033 case WifiMonitor.SCAN_FAILED_EVENT: 6034 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 6035 noteScanEnd(); 6036 setScanResults(); 6037 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 6038 /* Just updated results from full scan, let apps know about this */ 6039 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 6040 sendScanResultsAvailableBroadcast(scanSucceeded); 6041 } 6042 mSendScanResultsBroadcast = false; 6043 mIsScanOngoing = false; 6044 mIsFullScanOngoing = false; 6045 if (mBufferedScanMsg.size() > 0) 6046 sendMessage(mBufferedScanMsg.remove()); 6047 break; 6048 case CMD_PING_SUPPLICANT: 6049 boolean ok = mWifiNative.ping(); 6050 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6051 break; 6052 case CMD_GET_CAPABILITY_FREQ: 6053 String freqs = mWifiNative.getFreqCapability(); 6054 replyToMessage(message, message.what, freqs); 6055 break; 6056 case CMD_START_AP: 6057 /* Cannot start soft AP while in client mode */ 6058 loge("Failed to start soft AP with a running supplicant"); 6059 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 6060 break; 6061 case CMD_SET_OPERATIONAL_MODE: 6062 mOperationalMode = message.arg1; 6063 mWifiConfigStore. 6064 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6065 break; 6066 case CMD_TARGET_BSSID: 6067 // Trying to associate to this BSSID 6068 if (message.obj != null) { 6069 mTargetRoamBSSID = (String) message.obj; 6070 } 6071 break; 6072 case CMD_GET_LINK_LAYER_STATS: 6073 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 6074 if (stats == null) { 6075 // When firmware doesnt support link layer stats, return an empty object 6076 stats = new WifiLinkLayerStats(); 6077 } 6078 replyToMessage(message, message.what, stats); 6079 break; 6080 case CMD_SET_COUNTRY_CODE: 6081 String country = (String) message.obj; 6082 final boolean persist = (message.arg2 == 1); 6083 final int sequence = message.arg1; 6084 if (sequence != mCountryCodeSequence.get()) { 6085 if (DBG) log("set country code ignored due to sequnce num"); 6086 break; 6087 } 6088 6089 country = country.toUpperCase(Locale.ROOT); 6090 6091 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 6092 6093 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 6094 if (mWifiNative.setCountryCode(country)) { 6095 mDriverSetCountryCode = country; 6096 } else { 6097 loge("Failed to set country code " + country); 6098 } 6099 } 6100 6101 if (persist) { 6102 Settings.Global.putString(mContext.getContentResolver(), 6103 Settings.Global.WIFI_COUNTRY_CODE, 6104 country == null ? "" : country); 6105 } 6106 6107 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 6108 break; 6109 case CMD_RESET_SIM_NETWORKS: 6110 log("resetting EAP-SIM/AKA/AKA' networks since SIM was removed"); 6111 mWifiConfigStore.resetSimNetworks(); 6112 break; 6113 default: 6114 return NOT_HANDLED; 6115 } 6116 return HANDLED; 6117 } 6118 6119 @Override 6120 public void exit() { 6121 mNetworkInfo.setIsAvailable(false); 6122 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 6123 } 6124 } 6125 6126 class SupplicantStoppingState extends State { 6127 @Override 6128 public void enter() { 6129 /* Send any reset commands to supplicant before shutting it down */ 6130 handleNetworkDisconnect(); 6131 if (mDhcpStateMachine != null) { 6132 mDhcpStateMachine.doQuit(); 6133 } 6134 6135 String suppState = System.getProperty("init.svc.wpa_supplicant"); 6136 if (suppState == null) suppState = "unknown"; 6137 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 6138 if (p2pSuppState == null) p2pSuppState = "unknown"; 6139 6140 logd("SupplicantStoppingState: stopSupplicant " 6141 + " init.svc.wpa_supplicant=" + suppState 6142 + " init.svc.p2p_supplicant=" + p2pSuppState); 6143 mWifiMonitor.stopSupplicant(); 6144 6145 /* Send ourselves a delayed message to indicate failure after a wait time */ 6146 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 6147 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 6148 setWifiState(WIFI_STATE_DISABLING); 6149 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6150 } 6151 @Override 6152 public boolean processMessage(Message message) { 6153 logStateAndMessage(message, this); 6154 6155 switch(message.what) { 6156 case WifiMonitor.SUP_CONNECTION_EVENT: 6157 loge("Supplicant connection received while stopping"); 6158 break; 6159 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6160 if (DBG) log("Supplicant connection lost"); 6161 handleSupplicantConnectionLoss(false); 6162 transitionTo(mInitialState); 6163 break; 6164 case CMD_STOP_SUPPLICANT_FAILED: 6165 if (message.arg1 == mSupplicantStopFailureToken) { 6166 loge("Timed out on a supplicant stop, kill and proceed"); 6167 handleSupplicantConnectionLoss(true); 6168 transitionTo(mInitialState); 6169 } 6170 break; 6171 case CMD_START_SUPPLICANT: 6172 case CMD_STOP_SUPPLICANT: 6173 case CMD_START_AP: 6174 case CMD_STOP_AP: 6175 case CMD_START_DRIVER: 6176 case CMD_STOP_DRIVER: 6177 case CMD_SET_OPERATIONAL_MODE: 6178 case CMD_SET_COUNTRY_CODE: 6179 case CMD_SET_FREQUENCY_BAND: 6180 case CMD_START_PACKET_FILTERING: 6181 case CMD_STOP_PACKET_FILTERING: 6182 deferMessage(message); 6183 break; 6184 default: 6185 return NOT_HANDLED; 6186 } 6187 return HANDLED; 6188 } 6189 } 6190 6191 class DriverStartingState extends State { 6192 private int mTries; 6193 @Override 6194 public void enter() { 6195 mTries = 1; 6196 /* Send ourselves a delayed message to start driver a second time */ 6197 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6198 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6199 } 6200 @Override 6201 public boolean processMessage(Message message) { 6202 logStateAndMessage(message, this); 6203 6204 switch(message.what) { 6205 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6206 SupplicantState state = handleSupplicantStateChange(message); 6207 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6208 * a state that indicates driver has started, it is ready to 6209 * receive driver commands 6210 */ 6211 if (SupplicantState.isDriverActive(state)) { 6212 transitionTo(mDriverStartedState); 6213 } 6214 break; 6215 case CMD_DRIVER_START_TIMED_OUT: 6216 if (message.arg1 == mDriverStartToken) { 6217 if (mTries >= 2) { 6218 loge("Failed to start driver after " + mTries); 6219 transitionTo(mDriverStoppedState); 6220 } else { 6221 loge("Driver start failed, retrying"); 6222 mWakeLock.acquire(); 6223 mWifiNative.startDriver(); 6224 mWakeLock.release(); 6225 6226 ++mTries; 6227 /* Send ourselves a delayed message to start driver again */ 6228 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6229 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6230 } 6231 } 6232 break; 6233 /* Queue driver commands & connection events */ 6234 case CMD_START_DRIVER: 6235 case CMD_STOP_DRIVER: 6236 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6237 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6238 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6239 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6240 case WifiMonitor.WPS_OVERLAP_EVENT: 6241 case CMD_SET_COUNTRY_CODE: 6242 case CMD_SET_FREQUENCY_BAND: 6243 case CMD_START_PACKET_FILTERING: 6244 case CMD_STOP_PACKET_FILTERING: 6245 case CMD_START_SCAN: 6246 case CMD_DISCONNECT: 6247 case CMD_REASSOCIATE: 6248 case CMD_RECONNECT: 6249 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6250 deferMessage(message); 6251 break; 6252 case WifiMonitor.SCAN_RESULTS_EVENT: 6253 case WifiMonitor.SCAN_FAILED_EVENT: 6254 // Loose scan results obtained in Driver Starting state, they can only confuse 6255 // the state machine 6256 break; 6257 default: 6258 return NOT_HANDLED; 6259 } 6260 return HANDLED; 6261 } 6262 } 6263 6264 class DriverStartedState extends State { 6265 @Override 6266 public void enter() { 6267 6268 if (PDBG) { 6269 logd("DriverStartedState enter"); 6270 } 6271 6272 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6273 mIsRunning = true; 6274 mInDelayedStop = false; 6275 mDelayedStopCounter++; 6276 updateBatteryWorkSource(null); 6277 /** 6278 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6279 * When this mode is on, some of the low-level scan parameters used by the 6280 * driver are changed to reduce interference with bluetooth 6281 */ 6282 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6283 /* initialize network state */ 6284 setNetworkDetailedState(DetailedState.DISCONNECTED); 6285 6286 /* Remove any filtering on Multicast v6 at start */ 6287 mWifiNative.stopFilteringMulticastV6Packets(); 6288 6289 /* Reset Multicast v4 filtering state */ 6290 if (mFilteringMulticastV4Packets.get()) { 6291 mWifiNative.startFilteringMulticastV4Packets(); 6292 } else { 6293 mWifiNative.stopFilteringMulticastV4Packets(); 6294 } 6295 6296 mDhcpActive = false; 6297 6298 if (mOperationalMode != CONNECT_MODE) { 6299 mWifiNative.disconnect(); 6300 mWifiConfigStore.disableAllNetworks(); 6301 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6302 setWifiState(WIFI_STATE_DISABLED); 6303 } 6304 transitionTo(mScanModeState); 6305 } else { 6306 6307 // Status pulls in the current supplicant state and network connection state 6308 // events over the monitor connection. This helps framework sync up with 6309 // current supplicant state 6310 // TODO: actually check th supplicant status string and make sure the supplicant 6311 // is in disconnecte4d state. 6312 mWifiNative.status(); 6313 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6314 transitionTo(mDisconnectedState); 6315 transitionTo(mDisconnectedState); 6316 } 6317 6318 // We may have missed screen update at boot 6319 if (mScreenBroadcastReceived.get() == false) { 6320 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6321 Context.POWER_SERVICE); 6322 handleScreenStateChanged(powerManager.isScreenOn()); 6323 } else { 6324 // Set the right suspend mode settings 6325 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6326 && mUserWantsSuspendOpt.get()); 6327 } 6328 mWifiNative.setPowerSave(true); 6329 6330 if (mP2pSupported) { 6331 if (mOperationalMode == CONNECT_MODE) { 6332 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6333 } else { 6334 // P2P statemachine starts in disabled state, and is not enabled until 6335 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6336 // keep it disabled. 6337 } 6338 } 6339 6340 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6341 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6342 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6343 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6344 6345 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6346 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6347 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6348 mHalBasedPnoDriverSupported = true; 6349 } 6350 6351 // Enable link layer stats gathering 6352 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6353 6354 if (PDBG) { 6355 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6356 + " feature=" + mHalFeatureSet); 6357 } 6358 } 6359 6360 @Override 6361 public boolean processMessage(Message message) { 6362 logStateAndMessage(message, this); 6363 6364 switch(message.what) { 6365 case CMD_START_SCAN: 6366 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6367 break; 6368 case CMD_SET_FREQUENCY_BAND: 6369 int band = message.arg1; 6370 if (DBG) log("set frequency band " + band); 6371 if (mWifiNative.setBand(band)) { 6372 6373 if (PDBG) logd("did set frequency band " + band); 6374 6375 mFrequencyBand.set(band); 6376 // Flush old data - like scan results 6377 mWifiNative.bssFlush(); 6378 // Fetch the latest scan results when frequency band is set 6379// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6380 6381 if (PDBG) logd("done set frequency band " + band); 6382 6383 } else { 6384 loge("Failed to set frequency band " + band); 6385 } 6386 break; 6387 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6388 mBluetoothConnectionActive = (message.arg1 != 6389 BluetoothAdapter.STATE_DISCONNECTED); 6390 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6391 break; 6392 case CMD_STOP_DRIVER: 6393 int mode = message.arg1; 6394 6395 /* Already doing a delayed stop */ 6396 if (mInDelayedStop) { 6397 if (DBG) log("Already in delayed stop"); 6398 break; 6399 } 6400 /* disconnect right now, but leave the driver running for a bit */ 6401 mWifiConfigStore.disableAllNetworks(); 6402 6403 mInDelayedStop = true; 6404 mDelayedStopCounter++; 6405 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6406 6407 /* send regular delayed shut down */ 6408 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6409 driverStopIntent.setPackage("android"); 6410 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6411 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6412 DRIVER_STOP_REQUEST, driverStopIntent, 6413 PendingIntent.FLAG_UPDATE_CURRENT); 6414 6415 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6416 + mDriverStopDelayMs, mDriverStopIntent); 6417 break; 6418 case CMD_START_DRIVER: 6419 if (mInDelayedStop) { 6420 mInDelayedStop = false; 6421 mDelayedStopCounter++; 6422 mAlarmManager.cancel(mDriverStopIntent); 6423 if (DBG) log("Delayed stop ignored due to start"); 6424 if (mOperationalMode == CONNECT_MODE) { 6425 mWifiConfigStore.enableAllNetworks(); 6426 } 6427 } 6428 break; 6429 case CMD_DELAYED_STOP_DRIVER: 6430 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6431 if (message.arg1 != mDelayedStopCounter) break; 6432 if (getCurrentState() != mDisconnectedState) { 6433 mWifiNative.disconnect(); 6434 handleNetworkDisconnect(); 6435 } 6436 mWakeLock.acquire(); 6437 mWifiNative.stopDriver(); 6438 mWakeLock.release(); 6439 if (mP2pSupported) { 6440 transitionTo(mWaitForP2pDisableState); 6441 } else { 6442 transitionTo(mDriverStoppingState); 6443 } 6444 break; 6445 case CMD_START_PACKET_FILTERING: 6446 if (message.arg1 == MULTICAST_V6) { 6447 mWifiNative.startFilteringMulticastV6Packets(); 6448 } else if (message.arg1 == MULTICAST_V4) { 6449 mWifiNative.startFilteringMulticastV4Packets(); 6450 } else { 6451 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6452 } 6453 break; 6454 case CMD_STOP_PACKET_FILTERING: 6455 if (message.arg1 == MULTICAST_V6) { 6456 mWifiNative.stopFilteringMulticastV6Packets(); 6457 } else if (message.arg1 == MULTICAST_V4) { 6458 mWifiNative.stopFilteringMulticastV4Packets(); 6459 } else { 6460 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6461 } 6462 break; 6463 case CMD_SET_SUSPEND_OPT_ENABLED: 6464 if (message.arg1 == 1) { 6465 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6466 mSuspendWakeLock.release(); 6467 } else { 6468 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6469 } 6470 break; 6471 case CMD_SET_HIGH_PERF_MODE: 6472 if (message.arg1 == 1) { 6473 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6474 } else { 6475 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6476 } 6477 break; 6478 case CMD_ENABLE_TDLS: 6479 if (message.obj != null) { 6480 String remoteAddress = (String) message.obj; 6481 boolean enable = (message.arg1 == 1); 6482 mWifiNative.startTdls(remoteAddress, enable); 6483 } 6484 break; 6485 case WifiMonitor.ANQP_DONE_EVENT: 6486 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6487 break; 6488 case CMD_STOP_IP_PACKET_OFFLOAD: { 6489 int slot = message.arg1; 6490 int ret = stopWifiIPPacketOffload(slot); 6491 if (mNetworkAgent != null) { 6492 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6493 } 6494 break; 6495 } 6496 default: 6497 return NOT_HANDLED; 6498 } 6499 return HANDLED; 6500 } 6501 @Override 6502 public void exit() { 6503 6504 mWifiLogger.stopLogging(); 6505 6506 mIsRunning = false; 6507 updateBatteryWorkSource(null); 6508 mScanResults = new ArrayList<>(); 6509 6510 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6511 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6512 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6513 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6514 noteScanEnd(); // wrap up any pending request. 6515 mBufferedScanMsg.clear(); 6516 } 6517 } 6518 6519 class WaitForP2pDisableState extends State { 6520 private State mTransitionToState; 6521 @Override 6522 public void enter() { 6523 switch (getCurrentMessage().what) { 6524 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6525 mTransitionToState = mInitialState; 6526 break; 6527 case CMD_DELAYED_STOP_DRIVER: 6528 mTransitionToState = mDriverStoppingState; 6529 break; 6530 case CMD_STOP_SUPPLICANT: 6531 mTransitionToState = mSupplicantStoppingState; 6532 break; 6533 default: 6534 mTransitionToState = mDriverStoppingState; 6535 break; 6536 } 6537 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6538 } 6539 @Override 6540 public boolean processMessage(Message message) { 6541 logStateAndMessage(message, this); 6542 6543 switch(message.what) { 6544 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6545 transitionTo(mTransitionToState); 6546 break; 6547 /* Defer wifi start/shut and driver commands */ 6548 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6549 case CMD_START_SUPPLICANT: 6550 case CMD_STOP_SUPPLICANT: 6551 case CMD_START_AP: 6552 case CMD_STOP_AP: 6553 case CMD_START_DRIVER: 6554 case CMD_STOP_DRIVER: 6555 case CMD_SET_OPERATIONAL_MODE: 6556 case CMD_SET_COUNTRY_CODE: 6557 case CMD_SET_FREQUENCY_BAND: 6558 case CMD_START_PACKET_FILTERING: 6559 case CMD_STOP_PACKET_FILTERING: 6560 case CMD_START_SCAN: 6561 case CMD_DISCONNECT: 6562 case CMD_REASSOCIATE: 6563 case CMD_RECONNECT: 6564 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6565 deferMessage(message); 6566 break; 6567 default: 6568 return NOT_HANDLED; 6569 } 6570 return HANDLED; 6571 } 6572 } 6573 6574 class DriverStoppingState extends State { 6575 @Override 6576 public boolean processMessage(Message message) { 6577 logStateAndMessage(message, this); 6578 6579 switch(message.what) { 6580 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6581 SupplicantState state = handleSupplicantStateChange(message); 6582 if (state == SupplicantState.INTERFACE_DISABLED) { 6583 transitionTo(mDriverStoppedState); 6584 } 6585 break; 6586 /* Queue driver commands */ 6587 case CMD_START_DRIVER: 6588 case CMD_STOP_DRIVER: 6589 case CMD_SET_COUNTRY_CODE: 6590 case CMD_SET_FREQUENCY_BAND: 6591 case CMD_START_PACKET_FILTERING: 6592 case CMD_STOP_PACKET_FILTERING: 6593 case CMD_START_SCAN: 6594 case CMD_DISCONNECT: 6595 case CMD_REASSOCIATE: 6596 case CMD_RECONNECT: 6597 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6598 deferMessage(message); 6599 break; 6600 default: 6601 return NOT_HANDLED; 6602 } 6603 return HANDLED; 6604 } 6605 } 6606 6607 class DriverStoppedState extends State { 6608 @Override 6609 public boolean processMessage(Message message) { 6610 logStateAndMessage(message, this); 6611 switch (message.what) { 6612 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6613 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6614 SupplicantState state = stateChangeResult.state; 6615 // A WEXT bug means that we can be back to driver started state 6616 // unexpectedly 6617 if (SupplicantState.isDriverActive(state)) { 6618 transitionTo(mDriverStartedState); 6619 } 6620 break; 6621 case CMD_START_DRIVER: 6622 mWakeLock.acquire(); 6623 mWifiNative.startDriver(); 6624 mWakeLock.release(); 6625 transitionTo(mDriverStartingState); 6626 break; 6627 default: 6628 return NOT_HANDLED; 6629 } 6630 return HANDLED; 6631 } 6632 } 6633 6634 class ScanModeState extends State { 6635 private int mLastOperationMode; 6636 @Override 6637 public void enter() { 6638 mLastOperationMode = mOperationalMode; 6639 } 6640 @Override 6641 public boolean processMessage(Message message) { 6642 logStateAndMessage(message, this); 6643 6644 switch(message.what) { 6645 case CMD_SET_OPERATIONAL_MODE: 6646 if (message.arg1 == CONNECT_MODE) { 6647 6648 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6649 setWifiState(WIFI_STATE_ENABLED); 6650 // Load and re-enable networks when going back to enabled state 6651 // This is essential for networks to show up after restore 6652 mWifiConfigStore.loadAndEnableAllNetworks(); 6653 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6654 } else { 6655 mWifiConfigStore.enableAllNetworks(); 6656 } 6657 6658 // Try autojoining with recent network already present in the cache 6659 // If none are found then trigger a scan which will trigger autojoin 6660 // upon reception of scan results event 6661 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6662 startScan(ENABLE_WIFI, 0, null, null); 6663 } 6664 6665 // Loose last selection choice since user toggled WiFi 6666 mWifiConfigStore. 6667 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6668 6669 mOperationalMode = CONNECT_MODE; 6670 transitionTo(mDisconnectedState); 6671 } else { 6672 // Nothing to do 6673 return HANDLED; 6674 } 6675 break; 6676 // Handle scan. All the connection related commands are 6677 // handled only in ConnectModeState 6678 case CMD_START_SCAN: 6679 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6680 break; 6681 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6682 SupplicantState state = handleSupplicantStateChange(message); 6683 if(DBG) log("SupplicantState= " + state); 6684 break; 6685 default: 6686 return NOT_HANDLED; 6687 } 6688 return HANDLED; 6689 } 6690 } 6691 6692 6693 String smToString(Message message) { 6694 return smToString(message.what); 6695 } 6696 6697 String smToString(int what) { 6698 String s = "unknown"; 6699 switch (what) { 6700 case WifiMonitor.DRIVER_HUNG_EVENT: 6701 s = "DRIVER_HUNG_EVENT"; 6702 break; 6703 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6704 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6705 break; 6706 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6707 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6708 break; 6709 case CMD_SET_FREQUENCY_BAND: 6710 s = "CMD_SET_FREQUENCY_BAND"; 6711 break; 6712 case CMD_DELAYED_NETWORK_DISCONNECT: 6713 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6714 break; 6715 case CMD_TEST_NETWORK_DISCONNECT: 6716 s = "CMD_TEST_NETWORK_DISCONNECT"; 6717 break; 6718 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6719 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6720 break; 6721 case CMD_DISABLE_EPHEMERAL_NETWORK: 6722 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6723 break; 6724 case CMD_START_DRIVER: 6725 s = "CMD_START_DRIVER"; 6726 break; 6727 case CMD_STOP_DRIVER: 6728 s = "CMD_STOP_DRIVER"; 6729 break; 6730 case CMD_STOP_SUPPLICANT: 6731 s = "CMD_STOP_SUPPLICANT"; 6732 break; 6733 case CMD_STOP_SUPPLICANT_FAILED: 6734 s = "CMD_STOP_SUPPLICANT_FAILED"; 6735 break; 6736 case CMD_START_SUPPLICANT: 6737 s = "CMD_START_SUPPLICANT"; 6738 break; 6739 case CMD_REQUEST_AP_CONFIG: 6740 s = "CMD_REQUEST_AP_CONFIG"; 6741 break; 6742 case CMD_RESPONSE_AP_CONFIG: 6743 s = "CMD_RESPONSE_AP_CONFIG"; 6744 break; 6745 case CMD_TETHER_STATE_CHANGE: 6746 s = "CMD_TETHER_STATE_CHANGE"; 6747 break; 6748 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6749 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6750 break; 6751 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6752 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6753 break; 6754 case CMD_ADD_OR_UPDATE_NETWORK: 6755 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6756 break; 6757 case CMD_REMOVE_NETWORK: 6758 s = "CMD_REMOVE_NETWORK"; 6759 break; 6760 case CMD_ENABLE_NETWORK: 6761 s = "CMD_ENABLE_NETWORK"; 6762 break; 6763 case CMD_ENABLE_ALL_NETWORKS: 6764 s = "CMD_ENABLE_ALL_NETWORKS"; 6765 break; 6766 case CMD_AUTO_CONNECT: 6767 s = "CMD_AUTO_CONNECT"; 6768 break; 6769 case CMD_AUTO_ROAM: 6770 s = "CMD_AUTO_ROAM"; 6771 break; 6772 case CMD_AUTO_SAVE_NETWORK: 6773 s = "CMD_AUTO_SAVE_NETWORK"; 6774 break; 6775 case CMD_BOOT_COMPLETED: 6776 s = "CMD_BOOT_COMPLETED"; 6777 break; 6778 case DhcpStateMachine.CMD_START_DHCP: 6779 s = "CMD_START_DHCP"; 6780 break; 6781 case DhcpStateMachine.CMD_STOP_DHCP: 6782 s = "CMD_STOP_DHCP"; 6783 break; 6784 case DhcpStateMachine.CMD_RENEW_DHCP: 6785 s = "CMD_RENEW_DHCP"; 6786 break; 6787 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6788 s = "CMD_PRE_DHCP_ACTION"; 6789 break; 6790 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6791 s = "CMD_POST_DHCP_ACTION"; 6792 break; 6793 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6794 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6795 break; 6796 case DhcpStateMachine.CMD_ON_QUIT: 6797 s = "CMD_ON_QUIT"; 6798 break; 6799 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6800 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6801 break; 6802 case WifiManager.DISABLE_NETWORK: 6803 s = "WifiManager.DISABLE_NETWORK"; 6804 break; 6805 case CMD_BLACKLIST_NETWORK: 6806 s = "CMD_BLACKLIST_NETWORK"; 6807 break; 6808 case CMD_CLEAR_BLACKLIST: 6809 s = "CMD_CLEAR_BLACKLIST"; 6810 break; 6811 case CMD_SAVE_CONFIG: 6812 s = "CMD_SAVE_CONFIG"; 6813 break; 6814 case CMD_GET_CONFIGURED_NETWORKS: 6815 s = "CMD_GET_CONFIGURED_NETWORKS"; 6816 break; 6817 case CMD_GET_SUPPORTED_FEATURES: 6818 s = "CMD_GET_SUPPORTED_FEATURES"; 6819 break; 6820 case CMD_UNWANTED_NETWORK: 6821 s = "CMD_UNWANTED_NETWORK"; 6822 break; 6823 case CMD_NETWORK_STATUS: 6824 s = "CMD_NETWORK_STATUS"; 6825 break; 6826 case CMD_GET_LINK_LAYER_STATS: 6827 s = "CMD_GET_LINK_LAYER_STATS"; 6828 break; 6829 case CMD_GET_MATCHING_CONFIG: 6830 s = "CMD_GET_MATCHING_CONFIG"; 6831 break; 6832 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6833 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6834 break; 6835 case CMD_DISCONNECT: 6836 s = "CMD_DISCONNECT"; 6837 break; 6838 case CMD_RECONNECT: 6839 s = "CMD_RECONNECT"; 6840 break; 6841 case CMD_REASSOCIATE: 6842 s = "CMD_REASSOCIATE"; 6843 break; 6844 case CMD_GET_CONNECTION_STATISTICS: 6845 s = "CMD_GET_CONNECTION_STATISTICS"; 6846 break; 6847 case CMD_SET_HIGH_PERF_MODE: 6848 s = "CMD_SET_HIGH_PERF_MODE"; 6849 break; 6850 case CMD_SET_COUNTRY_CODE: 6851 s = "CMD_SET_COUNTRY_CODE"; 6852 break; 6853 case CMD_ENABLE_RSSI_POLL: 6854 s = "CMD_ENABLE_RSSI_POLL"; 6855 break; 6856 case CMD_RSSI_POLL: 6857 s = "CMD_RSSI_POLL"; 6858 break; 6859 case CMD_START_PACKET_FILTERING: 6860 s = "CMD_START_PACKET_FILTERING"; 6861 break; 6862 case CMD_STOP_PACKET_FILTERING: 6863 s = "CMD_STOP_PACKET_FILTERING"; 6864 break; 6865 case CMD_SET_SUSPEND_OPT_ENABLED: 6866 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6867 break; 6868 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6869 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6870 break; 6871 case CMD_UPDATE_LINKPROPERTIES: 6872 s = "CMD_UPDATE_LINKPROPERTIES"; 6873 break; 6874 case CMD_RELOAD_TLS_AND_RECONNECT: 6875 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6876 break; 6877 case WifiManager.CONNECT_NETWORK: 6878 s = "CONNECT_NETWORK"; 6879 break; 6880 case WifiManager.SAVE_NETWORK: 6881 s = "SAVE_NETWORK"; 6882 break; 6883 case WifiManager.FORGET_NETWORK: 6884 s = "FORGET_NETWORK"; 6885 break; 6886 case WifiMonitor.SUP_CONNECTION_EVENT: 6887 s = "SUP_CONNECTION_EVENT"; 6888 break; 6889 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6890 s = "SUP_DISCONNECTION_EVENT"; 6891 break; 6892 case WifiMonitor.SCAN_RESULTS_EVENT: 6893 s = "SCAN_RESULTS_EVENT"; 6894 break; 6895 case WifiMonitor.SCAN_FAILED_EVENT: 6896 s = "SCAN_FAILED_EVENT"; 6897 break; 6898 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6899 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6900 break; 6901 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6902 s = "AUTHENTICATION_FAILURE_EVENT"; 6903 break; 6904 case WifiMonitor.SSID_TEMP_DISABLED: 6905 s = "SSID_TEMP_DISABLED"; 6906 break; 6907 case WifiMonitor.SSID_REENABLED: 6908 s = "SSID_REENABLED"; 6909 break; 6910 case WifiMonitor.WPS_SUCCESS_EVENT: 6911 s = "WPS_SUCCESS_EVENT"; 6912 break; 6913 case WifiMonitor.WPS_FAIL_EVENT: 6914 s = "WPS_FAIL_EVENT"; 6915 break; 6916 case WifiMonitor.SUP_REQUEST_IDENTITY: 6917 s = "SUP_REQUEST_IDENTITY"; 6918 break; 6919 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6920 s = "NETWORK_CONNECTION_EVENT"; 6921 break; 6922 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6923 s = "NETWORK_DISCONNECTION_EVENT"; 6924 break; 6925 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6926 s = "ASSOCIATION_REJECTION_EVENT"; 6927 break; 6928 case WifiMonitor.ANQP_DONE_EVENT: 6929 s = "WifiMonitor.ANQP_DONE_EVENT"; 6930 break; 6931 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6932 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6933 break; 6934 case WifiMonitor.HS20_DEAUTH_EVENT: 6935 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6936 break; 6937 case WifiMonitor.GAS_QUERY_START_EVENT: 6938 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6939 break; 6940 case WifiMonitor.RSN_PMKID_MISMATCH_EVENT: 6941 s = "WifiMonitor.RSN_PMKID_MISMATCH_EVENT"; 6942 break; 6943 case CMD_SET_OPERATIONAL_MODE: 6944 s = "CMD_SET_OPERATIONAL_MODE"; 6945 break; 6946 case CMD_START_SCAN: 6947 s = "CMD_START_SCAN"; 6948 break; 6949 case CMD_DISABLE_P2P_RSP: 6950 s = "CMD_DISABLE_P2P_RSP"; 6951 break; 6952 case CMD_DISABLE_P2P_REQ: 6953 s = "CMD_DISABLE_P2P_REQ"; 6954 break; 6955 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6956 s = "GOOD_LINK_DETECTED"; 6957 break; 6958 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6959 s = "POOR_LINK_DETECTED"; 6960 break; 6961 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6962 s = "GROUP_CREATING_TIMED_OUT"; 6963 break; 6964 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6965 s = "P2P_CONNECTION_CHANGED"; 6966 break; 6967 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6968 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6969 break; 6970 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6971 s = "P2P.SET_MIRACAST_MODE"; 6972 break; 6973 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6974 s = "P2P.BLOCK_DISCOVERY"; 6975 break; 6976 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6977 s = "P2P.SET_COUNTRY_CODE"; 6978 break; 6979 case WifiManager.CANCEL_WPS: 6980 s = "CANCEL_WPS"; 6981 break; 6982 case WifiManager.CANCEL_WPS_FAILED: 6983 s = "CANCEL_WPS_FAILED"; 6984 break; 6985 case WifiManager.CANCEL_WPS_SUCCEDED: 6986 s = "CANCEL_WPS_SUCCEDED"; 6987 break; 6988 case WifiManager.START_WPS: 6989 s = "START_WPS"; 6990 break; 6991 case WifiManager.START_WPS_SUCCEEDED: 6992 s = "START_WPS_SUCCEEDED"; 6993 break; 6994 case WifiManager.WPS_FAILED: 6995 s = "WPS_FAILED"; 6996 break; 6997 case WifiManager.WPS_COMPLETED: 6998 s = "WPS_COMPLETED"; 6999 break; 7000 case WifiManager.RSSI_PKTCNT_FETCH: 7001 s = "RSSI_PKTCNT_FETCH"; 7002 break; 7003 case CMD_IP_CONFIGURATION_LOST: 7004 s = "CMD_IP_CONFIGURATION_LOST"; 7005 break; 7006 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7007 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 7008 break; 7009 case CMD_IP_REACHABILITY_LOST: 7010 s = "CMD_IP_REACHABILITY_LOST"; 7011 break; 7012 case CMD_STATIC_IP_SUCCESS: 7013 s = "CMD_STATIC_IP_SUCCESSFUL"; 7014 break; 7015 case CMD_STATIC_IP_FAILURE: 7016 s = "CMD_STATIC_IP_FAILURE"; 7017 break; 7018 case DhcpStateMachine.DHCP_SUCCESS: 7019 s = "DHCP_SUCCESS"; 7020 break; 7021 case DhcpStateMachine.DHCP_FAILURE: 7022 s = "DHCP_FAILURE"; 7023 break; 7024 case CMD_TARGET_BSSID: 7025 s = "CMD_TARGET_BSSID"; 7026 break; 7027 case CMD_ASSOCIATED_BSSID: 7028 s = "CMD_ASSOCIATED_BSSID"; 7029 break; 7030 case CMD_REMOVE_APP_CONFIGURATIONS: 7031 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 7032 break; 7033 case CMD_REMOVE_USER_CONFIGURATIONS: 7034 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 7035 break; 7036 case CMD_ROAM_WATCHDOG_TIMER: 7037 s = "CMD_ROAM_WATCHDOG_TIMER"; 7038 break; 7039 case CMD_SCREEN_STATE_CHANGED: 7040 s = "CMD_SCREEN_STATE_CHANGED"; 7041 break; 7042 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7043 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 7044 break; 7045 case CMD_RESTART_AUTOJOIN_OFFLOAD: 7046 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 7047 break; 7048 case CMD_STARTED_PNO_DBG: 7049 s = "CMD_STARTED_PNO_DBG"; 7050 break; 7051 case CMD_STARTED_GSCAN_DBG: 7052 s = "CMD_STARTED_GSCAN_DBG"; 7053 break; 7054 case CMD_PNO_NETWORK_FOUND: 7055 s = "CMD_PNO_NETWORK_FOUND"; 7056 break; 7057 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 7058 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 7059 break; 7060 case CMD_START_IP_PACKET_OFFLOAD: 7061 s = "CMD_START_IP_PACKET_OFFLOAD"; 7062 break; 7063 case CMD_STOP_IP_PACKET_OFFLOAD: 7064 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 7065 break; 7066 case CMD_START_RSSI_MONITORING_OFFLOAD: 7067 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 7068 break; 7069 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 7070 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 7071 break; 7072 case CMD_RSSI_THRESHOLD_BREACH: 7073 s = "CMD_RSSI_THRESHOLD_BREACH"; 7074 break; 7075 default: 7076 s = "what:" + Integer.toString(what); 7077 break; 7078 } 7079 return s; 7080 } 7081 7082 void registerConnected() { 7083 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7084 long now_ms = System.currentTimeMillis(); 7085 // We are switching away from this configuration, 7086 // hence record the time we were connected last 7087 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7088 if (config != null) { 7089 config.lastConnected = System.currentTimeMillis(); 7090 config.autoJoinBailedDueToLowRssi = false; 7091 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 7092 config.numConnectionFailures = 0; 7093 config.numIpConfigFailures = 0; 7094 config.numAuthFailures = 0; 7095 config.numAssociation++; 7096 } 7097 mBadLinkspeedcount = 0; 7098 } 7099 } 7100 7101 void registerDisconnected() { 7102 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7103 long now_ms = System.currentTimeMillis(); 7104 // We are switching away from this configuration, 7105 // hence record the time we were connected last 7106 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7107 if (config != null) { 7108 config.lastDisconnected = System.currentTimeMillis(); 7109 if (config.ephemeral) { 7110 // Remove ephemeral WifiConfigurations from file 7111 mWifiConfigStore.forgetNetwork(mLastNetworkId); 7112 } 7113 } 7114 } 7115 } 7116 7117 void noteWifiDisabledWhileAssociated() { 7118 // We got disabled by user while we were associated, make note of it 7119 int rssi = mWifiInfo.getRssi(); 7120 WifiConfiguration config = getCurrentWifiConfiguration(); 7121 if (getCurrentState() == mConnectedState 7122 && rssi != WifiInfo.INVALID_RSSI 7123 && config != null) { 7124 boolean is24GHz = mWifiInfo.is24GHz(); 7125 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 7126 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 7127 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 7128 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 7129 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 7130 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 7131 if (isBadRSSI) { 7132 // Take note that we got disabled while RSSI was Bad 7133 config.numUserTriggeredWifiDisableLowRSSI++; 7134 } else if (isLowRSSI) { 7135 // Take note that we got disabled while RSSI was Low 7136 config.numUserTriggeredWifiDisableBadRSSI++; 7137 } else if (!isHighRSSI) { 7138 // Take note that we got disabled while RSSI was Not high 7139 config.numUserTriggeredWifiDisableNotHighRSSI++; 7140 } 7141 } 7142 } 7143 7144 WifiConfiguration getCurrentWifiConfiguration() { 7145 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 7146 return null; 7147 } 7148 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7149 } 7150 7151 ScanResult getCurrentScanResult() { 7152 WifiConfiguration config = getCurrentWifiConfiguration(); 7153 if (config == null) { 7154 return null; 7155 } 7156 String BSSID = mWifiInfo.getBSSID(); 7157 if (BSSID == null) { 7158 BSSID = mTargetRoamBSSID; 7159 } 7160 ScanDetailCache scanDetailCache = 7161 mWifiConfigStore.getScanDetailCache(config); 7162 7163 if (scanDetailCache == null) { 7164 return null; 7165 } 7166 7167 return scanDetailCache.get(BSSID); 7168 } 7169 7170 String getCurrentBSSID() { 7171 if (linkDebouncing) { 7172 return null; 7173 } 7174 return mLastBssid; 7175 } 7176 7177 class ConnectModeState extends State { 7178 7179 @Override 7180 public void enter() { 7181 connectScanningService(); 7182 } 7183 7184 @Override 7185 public boolean processMessage(Message message) { 7186 WifiConfiguration config; 7187 int netId; 7188 boolean ok; 7189 boolean didDisconnect; 7190 String bssid; 7191 String ssid; 7192 NetworkUpdateResult result; 7193 logStateAndMessage(message, this); 7194 7195 switch (message.what) { 7196 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7197 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 7198 didBlackListBSSID = false; 7199 bssid = (String) message.obj; 7200 if (bssid == null || TextUtils.isEmpty(bssid)) { 7201 // If BSSID is null, use the target roam BSSID 7202 bssid = mTargetRoamBSSID; 7203 } 7204 if (bssid != null) { 7205 // If we have a BSSID, tell configStore to black list it 7206 synchronized(mScanResultCache) { 7207 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 7208 (mLastNetworkId, bssid, false); 7209 } 7210 } 7211 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 7212 break; 7213 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7214 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 7215 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 7216 break; 7217 case WifiMonitor.SSID_TEMP_DISABLED: 7218 case WifiMonitor.SSID_REENABLED: 7219 String substr = (String) message.obj; 7220 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 7221 "temp-disabled" : "re-enabled"; 7222 logd("ConnectModeState SSID state=" + en + " nid=" 7223 + Integer.toString(message.arg1) + " [" + substr + "]"); 7224 synchronized(mScanResultCache) { 7225 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 7226 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 7227 } 7228 break; 7229 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7230 SupplicantState state = handleSupplicantStateChange(message); 7231 // A driver/firmware hang can now put the interface in a down state. 7232 // We detect the interface going down and recover from it 7233 if (!SupplicantState.isDriverActive(state)) { 7234 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7235 handleNetworkDisconnect(); 7236 } 7237 log("Detected an interface down, restart driver"); 7238 transitionTo(mDriverStoppedState); 7239 sendMessage(CMD_START_DRIVER); 7240 break; 7241 } 7242 7243 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7244 // when authentication times out after a successful connection, 7245 // we can figure this from the supplicant state. If supplicant 7246 // state is DISCONNECTED, but the mNetworkInfo says we are not 7247 // disconnected, we need to handle a disconnection 7248 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7249 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7250 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7251 handleNetworkDisconnect(); 7252 transitionTo(mDisconnectedState); 7253 } 7254 7255 // If we have COMPLETED a connection to a BSSID, start doing 7256 // DNAv4/DNAv6 -style probing for on-link neighbors of 7257 // interest (e.g. routers); harmless if none are configured. 7258 if (state == SupplicantState.COMPLETED) { 7259 if (mIpReachabilityMonitor != null) { 7260 mIpReachabilityMonitor.probeAll(); 7261 } 7262 } 7263 7264 if (state == SupplicantState.ASSOCIATED) { 7265 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7266 if (stateChangeResult != null) { 7267 mCurrentAssociateNetworkId = stateChangeResult.networkId; 7268 } 7269 } 7270 break; 7271 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7272 if (message.arg1 == 1) { 7273 mWifiNative.disconnect(); 7274 mTemporarilyDisconnectWifi = true; 7275 } else { 7276 mWifiNative.reconnect(); 7277 mTemporarilyDisconnectWifi = false; 7278 } 7279 break; 7280 case CMD_ADD_OR_UPDATE_NETWORK: 7281 config = (WifiConfiguration) message.obj; 7282 7283 if (!recordUidIfAuthorized(config, message.sendingUid, 7284 /* onlyAnnotate */ false)) { 7285 logw("Not authorized to update network " 7286 + " config=" + config.SSID 7287 + " cnid=" + config.networkId 7288 + " uid=" + message.sendingUid); 7289 replyToMessage(message, message.what, FAILURE); 7290 break; 7291 } 7292 7293 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7294 if (res < 0) { 7295 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7296 } else { 7297 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7298 if (curConfig != null && config != null) { 7299 if (curConfig.priority < config.priority 7300 && config.status == WifiConfiguration.Status.ENABLED) { 7301 // Interpret this as a connect attempt 7302 // Set the last selected configuration so as to allow the system to 7303 // stick the last user choice without persisting the choice 7304 mWifiConfigStore.setLastSelectedConfiguration(res); 7305 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7306 mWifiConfigStore.writeKnownNetworkHistory(false); 7307 7308 // Remember time of last connection attempt 7309 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7310 7311 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7312 7313 // As a courtesy to the caller, trigger a scan now 7314 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7315 } 7316 } 7317 } 7318 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7319 break; 7320 case CMD_REMOVE_NETWORK: 7321 netId = message.arg1; 7322 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7323 /* onlyAnnotate */ false)) { 7324 logw("Not authorized to remove network " 7325 + " cnid=" + netId 7326 + " uid=" + message.sendingUid); 7327 replyToMessage(message, message.what, FAILURE); 7328 break; 7329 } 7330 7331 ok = mWifiConfigStore.removeNetwork(message.arg1); 7332 if (!ok) { 7333 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7334 } 7335 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7336 break; 7337 case CMD_ENABLE_NETWORK: 7338 boolean disableOthers = message.arg2 == 1; 7339 netId = message.arg1; 7340 config = mWifiConfigStore.getWifiConfiguration(netId); 7341 if (config == null) { 7342 loge("No network with id = " + netId); 7343 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7344 break; 7345 } 7346 7347 // Tell autojoin the user did try to select to that network 7348 // However, do NOT persist the choice by bumping the priority of the network 7349 if (disableOthers) { 7350 mWifiAutoJoinController. 7351 updateConfigurationHistory(netId, true, false); 7352 // Set the last selected configuration so as to allow the system to 7353 // stick the last user choice without persisting the choice 7354 mWifiConfigStore.setLastSelectedConfiguration(netId); 7355 7356 // Remember time of last connection attempt 7357 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7358 7359 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7360 } 7361 // Cancel auto roam requests 7362 autoRoamSetBSSID(netId, "any"); 7363 7364 int uid = message.sendingUid; 7365 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7366 if (!ok) { 7367 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7368 } 7369 7370 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7371 break; 7372 case CMD_ENABLE_ALL_NETWORKS: 7373 long time = android.os.SystemClock.elapsedRealtime(); 7374 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7375 mWifiConfigStore.enableAllNetworks(); 7376 mLastEnableAllNetworksTime = time; 7377 } 7378 break; 7379 case WifiManager.DISABLE_NETWORK: 7380 if (mWifiConfigStore.disableNetwork(message.arg1, 7381 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7382 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7383 } else { 7384 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7385 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7386 WifiManager.ERROR); 7387 } 7388 break; 7389 case CMD_DISABLE_EPHEMERAL_NETWORK: 7390 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7391 if (config != null) { 7392 if (config.networkId == mLastNetworkId) { 7393 // Disconnect and let autojoin reselect a new network 7394 sendMessage(CMD_DISCONNECT); 7395 } 7396 } 7397 break; 7398 case CMD_BLACKLIST_NETWORK: 7399 mWifiConfigStore.blackListBssid((String) message.obj); 7400 break; 7401 case CMD_CLEAR_BLACKLIST: 7402 mWifiConfigStore.clearBssidBlacklist(); 7403 break; 7404 case CMD_SAVE_CONFIG: 7405 ok = mWifiConfigStore.saveConfig(); 7406 7407 if (DBG) logd("did save config " + ok); 7408 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7409 7410 // Inform the backup manager about a data change 7411 IBackupManager ibm = IBackupManager.Stub.asInterface( 7412 ServiceManager.getService(Context.BACKUP_SERVICE)); 7413 if (ibm != null) { 7414 try { 7415 ibm.dataChanged("com.android.providers.settings"); 7416 } catch (Exception e) { 7417 // Try again later 7418 } 7419 } 7420 break; 7421 case CMD_GET_CONFIGURED_NETWORKS: 7422 replyToMessage(message, message.what, 7423 mWifiConfigStore.getConfiguredNetworks()); 7424 break; 7425 case WifiMonitor.SUP_REQUEST_IDENTITY: 7426 int networkId = message.arg2; 7427 boolean identitySent = false; 7428 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7429 7430 if (targetWificonfiguration != null 7431 && targetWificonfiguration.enterpriseConfig != null) { 7432 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7433 } 7434 7435 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7436 if (targetWificonfiguration != null 7437 && targetWificonfiguration.networkId == networkId 7438 && targetWificonfiguration.allowedKeyManagement 7439 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7440 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7441 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7442 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7443 TelephonyManager tm = (TelephonyManager) 7444 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7445 if (tm != null) { 7446 String imsi = tm.getSubscriberId(); 7447 String mccMnc = ""; 7448 7449 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7450 mccMnc = tm.getSimOperator(); 7451 7452 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7453 7454 if (!identity.isEmpty()) { 7455 mWifiNative.simIdentityResponse(networkId, identity); 7456 identitySent = true; 7457 } 7458 } 7459 } 7460 if (!identitySent) { 7461 // Supplicant lacks credentials to connect to that network, hence black list 7462 ssid = (String) message.obj; 7463 if (targetWificonfiguration != null && ssid != null 7464 && targetWificonfiguration.SSID != null 7465 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7466 mWifiConfigStore.handleSSIDStateChange( 7467 targetWificonfiguration.networkId, false, 7468 "AUTH_FAILED no identity", null); 7469 } 7470 // Disconnect now, as we don't have any way to fullfill 7471 // the supplicant request. 7472 mWifiConfigStore.setLastSelectedConfiguration( 7473 WifiConfiguration.INVALID_NETWORK_ID); 7474 mWifiNative.disconnect(); 7475 } 7476 break; 7477 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7478 logd("Received SUP_REQUEST_SIM_AUTH"); 7479 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7480 if (requestData != null) { 7481 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7482 handleGsmAuthRequest(requestData); 7483 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7484 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7485 handle3GAuthRequest(requestData); 7486 } 7487 } else { 7488 loge("Invalid sim auth request"); 7489 } 7490 break; 7491 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7492 replyToMessage(message, message.what, 7493 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7494 break; 7495 case CMD_GET_MATCHING_CONFIG: 7496 replyToMessage(message, message.what, 7497 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7498 break; 7499 /* Do a redundant disconnect without transition */ 7500 case CMD_DISCONNECT: 7501 mWifiConfigStore.setLastSelectedConfiguration 7502 (WifiConfiguration.INVALID_NETWORK_ID); 7503 mWifiNative.disconnect(); 7504 break; 7505 case CMD_RECONNECT: 7506 mWifiAutoJoinController.attemptAutoJoin(); 7507 break; 7508 case CMD_REASSOCIATE: 7509 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7510 mWifiNative.reassociate(); 7511 break; 7512 case CMD_RELOAD_TLS_AND_RECONNECT: 7513 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7514 logd("Reconnecting to give a chance to un-connected TLS networks"); 7515 mWifiNative.disconnect(); 7516 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7517 mWifiNative.reconnect(); 7518 } 7519 break; 7520 case CMD_AUTO_ROAM: 7521 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7522 return HANDLED; 7523 case CMD_AUTO_CONNECT: 7524 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7525 * associated status to the STATUS command but somehow-someplace still thinks 7526 * it is associated and thus will ignore select/reconnect command with 7527 * following message: 7528 * "Already associated with the selected network - do nothing" 7529 * 7530 * Hence, sends a disconnect to supplicant first. 7531 */ 7532 didDisconnect = false; 7533 if (getCurrentState() != mDisconnectedState) { 7534 /** Supplicant will ignore the reconnect if we are currently associated, 7535 * hence trigger a disconnect 7536 */ 7537 didDisconnect = true; 7538 mWifiNative.disconnect(); 7539 } 7540 7541 /* connect command coming from auto-join */ 7542 config = (WifiConfiguration) message.obj; 7543 netId = message.arg1; 7544 int roam = message.arg2; 7545 logd("CMD_AUTO_CONNECT sup state " 7546 + mSupplicantStateTracker.getSupplicantStateName() 7547 + " my state " + getCurrentState().getName() 7548 + " nid=" + Integer.toString(netId) 7549 + " roam=" + Integer.toString(roam)); 7550 if (config == null) { 7551 loge("AUTO_CONNECT and no config, bail out..."); 7552 break; 7553 } 7554 7555 /* Make sure we cancel any previous roam request */ 7556 autoRoamSetBSSID(netId, config.BSSID); 7557 7558 /* Save the network config */ 7559 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7560 + " nid=" + Integer.toString(netId)); 7561 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7562 netId = result.getNetworkId(); 7563 logd("CMD_AUTO_CONNECT did save config -> " 7564 + " nid=" + Integer.toString(netId)); 7565 7566 // Since we updated the config,read it back from config store: 7567 config = mWifiConfigStore.getWifiConfiguration(netId); 7568 if (config == null) { 7569 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7570 break; 7571 } 7572 if (netId != config.networkId) { 7573 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7574 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7575 break; 7576 } 7577 7578 if (deferForUserInput(message, netId, false)) { 7579 break; 7580 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7581 WifiConfiguration.USER_BANNED) { 7582 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7583 WifiManager.NOT_AUTHORIZED); 7584 break; 7585 } 7586 7587 // Make sure the network is enabled, since supplicant will not reenable it 7588 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7589 7590 // If we're autojoining a network that the user or an app explicitly selected, 7591 // keep track of the UID that selected it. 7592 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7593 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7594 7595 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7596 lastConnectUid) && mWifiNative.reconnect()) { 7597 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7598 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7599 config = mWifiConfigStore.getWifiConfiguration(netId); 7600 if (config != null 7601 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7602 // If we autojoined a different config than the user selected one, 7603 // it means we could not see the last user selection, 7604 // or that the last user selection was faulty and ended up blacklisted 7605 // for some reason (in which case the user is notified with an error 7606 // message in the Wifi picker), and thus we managed to auto-join away 7607 // from the selected config. -> in that case we need to forget 7608 // the selection because we don't want to abruptly switch back to it. 7609 // 7610 // Note that the user selection is also forgotten after a period of time 7611 // during which the device has been disconnected. 7612 // The default value is 30 minutes : see the code path at bottom of 7613 // setScanResults() function. 7614 mWifiConfigStore. 7615 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7616 } 7617 mAutoRoaming = roam; 7618 if (isRoaming() || linkDebouncing) { 7619 transitionTo(mRoamingState); 7620 } else if (didDisconnect) { 7621 transitionTo(mDisconnectingState); 7622 } else { 7623 /* Already in disconnected state, nothing to change */ 7624 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7625 int delay = 60 * 1000; 7626 if (VDBG) { 7627 logd("Starting PNO alarm: " + delay); 7628 } 7629 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7630 System.currentTimeMillis() + delay, 7631 mPnoIntent); 7632 } 7633 mRestartAutoJoinOffloadCounter++; 7634 } 7635 } else { 7636 loge("Failed to connect config: " + config + " netId: " + netId); 7637 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7638 WifiManager.ERROR); 7639 break; 7640 } 7641 break; 7642 case CMD_REMOVE_APP_CONFIGURATIONS: 7643 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7644 break; 7645 case CMD_REMOVE_USER_CONFIGURATIONS: 7646 mWifiConfigStore.removeNetworksForUser(message.arg1); 7647 break; 7648 case WifiManager.CONNECT_NETWORK: 7649 /** 7650 * The connect message can contain a network id passed as arg1 on message or 7651 * or a config passed as obj on message. 7652 * For a new network, a config is passed to create and connect. 7653 * For an existing network, a network id is passed 7654 */ 7655 netId = message.arg1; 7656 config = (WifiConfiguration) message.obj; 7657 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7658 boolean updatedExisting = false; 7659 7660 /* Save the network config */ 7661 if (config != null) { 7662 // When connecting to an access point, WifiStateMachine wants to update the 7663 // relevant config with administrative data. This update should not be 7664 // considered a 'real' update, therefore lockdown by Device Owner must be 7665 // disregarded. 7666 if (!recordUidIfAuthorized(config, message.sendingUid, 7667 /* onlyAnnotate */ true)) { 7668 logw("Not authorized to update network " 7669 + " config=" + config.SSID 7670 + " cnid=" + config.networkId 7671 + " uid=" + message.sendingUid); 7672 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7673 WifiManager.NOT_AUTHORIZED); 7674 break; 7675 } 7676 7677 String configKey = config.configKey(true /* allowCached */); 7678 WifiConfiguration savedConfig = 7679 mWifiConfigStore.getWifiConfiguration(configKey); 7680 if (savedConfig != null) { 7681 // There is an existing config with this netId, but it wasn't exposed 7682 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7683 // getConfiguredNetworks). Remove those bits and update the config. 7684 config = savedConfig; 7685 logd("CONNECT_NETWORK updating existing config with id=" + 7686 config.networkId + " configKey=" + configKey); 7687 config.ephemeral = false; 7688 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7689 updatedExisting = true; 7690 } 7691 7692 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7693 netId = result.getNetworkId(); 7694 } 7695 config = mWifiConfigStore.getWifiConfiguration(netId); 7696 7697 if (config == null) { 7698 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7699 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7700 + getCurrentState().getName()); 7701 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7702 WifiManager.ERROR); 7703 break; 7704 } else { 7705 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7706 logd("CONNECT_NETWORK id=" + Integer.toString(netId) 7707 + " config=" + config.SSID 7708 + " cnid=" + config.networkId 7709 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7710 + " my state " + getCurrentState().getName() 7711 + " uid = " + message.sendingUid 7712 + wasSkipped); 7713 } 7714 7715 autoRoamSetBSSID(netId, "any"); 7716 7717 if (message.sendingUid == Process.WIFI_UID 7718 || message.sendingUid == Process.SYSTEM_UID) { 7719 // As a sanity measure, clear the BSSID in the supplicant network block. 7720 // If system or Wifi Settings want to connect, they will not 7721 // specify the BSSID. 7722 // If an app however had added a BSSID to this configuration, and the BSSID 7723 // was wrong, Then we would forever fail to connect until that BSSID 7724 // is cleaned up. 7725 clearConfigBSSID(config, "CONNECT_NETWORK"); 7726 } 7727 7728 if (deferForUserInput(message, netId, true)) { 7729 break; 7730 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7731 WifiConfiguration.USER_BANNED) { 7732 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7733 WifiManager.NOT_AUTHORIZED); 7734 break; 7735 } 7736 7737 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7738 7739 /* Tell autojoin the user did try to connect to that network if from settings */ 7740 boolean persist = 7741 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7742 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7743 7744 mWifiConfigStore.setLastSelectedConfiguration(netId); 7745 7746 didDisconnect = false; 7747 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7748 && mLastNetworkId != netId) { 7749 /** Supplicant will ignore the reconnect if we are currently associated, 7750 * hence trigger a disconnect 7751 */ 7752 didDisconnect = true; 7753 mWifiNative.disconnect(); 7754 } 7755 7756 // Make sure the network is enabled, since supplicant will not reenable it 7757 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7758 7759 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7760 message.sendingUid) && mWifiNative.reconnect()) { 7761 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7762 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7763 7764 /* The state tracker handles enabling networks upon completion/failure */ 7765 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7766 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7767 if (didDisconnect) { 7768 /* Expect a disconnection from the old connection */ 7769 transitionTo(mDisconnectingState); 7770 } else if (updatedExisting && getCurrentState() == mConnectedState && 7771 getCurrentWifiConfiguration().networkId == netId) { 7772 // Update the current set of network capabilities, but stay in the 7773 // current state. 7774 updateCapabilities(config); 7775 } else { 7776 /** 7777 * Directly go to disconnected state where we 7778 * process the connection events from supplicant 7779 **/ 7780 transitionTo(mDisconnectedState); 7781 } 7782 } else { 7783 loge("Failed to connect config: " + config + " netId: " + netId); 7784 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7785 WifiManager.ERROR); 7786 break; 7787 } 7788 break; 7789 case WifiManager.SAVE_NETWORK: 7790 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7791 // Fall thru 7792 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7793 lastSavedConfigurationAttempt = null; // Used for debug 7794 config = (WifiConfiguration) message.obj; 7795 if (config == null) { 7796 loge("ERROR: SAVE_NETWORK with null configuration" 7797 + mSupplicantStateTracker.getSupplicantStateName() 7798 + " my state " + getCurrentState().getName()); 7799 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7800 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7801 WifiManager.ERROR); 7802 break; 7803 } 7804 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7805 int nid = config.networkId; 7806 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7807 + " config=" + config.SSID 7808 + " nid=" + config.networkId 7809 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7810 + " my state " + getCurrentState().getName()); 7811 7812 // Only record the uid if this is user initiated 7813 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7814 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7815 /* onlyAnnotate */ false)) { 7816 logw("Not authorized to update network " 7817 + " config=" + config.SSID 7818 + " cnid=" + config.networkId 7819 + " uid=" + message.sendingUid); 7820 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7821 WifiManager.NOT_AUTHORIZED); 7822 break; 7823 } 7824 7825 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7826 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7827 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7828 if (result.hasIpChanged()) { 7829 // The currently connection configuration was changed 7830 // We switched from DHCP to static or from static to DHCP, or the 7831 // static IP address has changed. 7832 log("Reconfiguring IP on connection"); 7833 // TODO: clear addresses and disable IPv6 7834 // to simplify obtainingIpState. 7835 transitionTo(mObtainingIpState); 7836 } 7837 if (result.hasProxyChanged()) { 7838 log("Reconfiguring proxy on connection"); 7839 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7840 } 7841 } 7842 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7843 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7844 7845 if (VDBG) { 7846 logd("Success save network nid=" 7847 + Integer.toString(result.getNetworkId())); 7848 } 7849 7850 synchronized(mScanResultCache) { 7851 /** 7852 * If the command comes from WifiManager, then 7853 * tell autojoin the user did try to modify and save that network, 7854 * and interpret the SAVE_NETWORK as a request to connect 7855 */ 7856 boolean user = message.what == WifiManager.SAVE_NETWORK; 7857 7858 // Did this connect come from settings 7859 boolean persistConnect = 7860 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7861 7862 if (user) { 7863 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7864 mWifiConfigStore.writeKnownNetworkHistory(false); 7865 } 7866 7867 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7868 , user, persistConnect); 7869 mWifiAutoJoinController.attemptAutoJoin(); 7870 } 7871 } else { 7872 loge("Failed to save network"); 7873 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7874 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7875 WifiManager.ERROR); 7876 } 7877 break; 7878 case WifiManager.FORGET_NETWORK: 7879 // Debug only, remember last configuration that was forgotten 7880 WifiConfiguration toRemove 7881 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7882 if (toRemove == null) { 7883 lastForgetConfigurationAttempt = null; 7884 } else { 7885 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7886 } 7887 // check that the caller owns this network 7888 netId = message.arg1; 7889 7890 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7891 /* onlyAnnotate */ false)) { 7892 logw("Not authorized to forget network " 7893 + " cnid=" + netId 7894 + " uid=" + message.sendingUid); 7895 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7896 WifiManager.NOT_AUTHORIZED); 7897 break; 7898 } 7899 7900 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7901 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7902 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7903 (WifiConfiguration) message.obj); 7904 } else { 7905 loge("Failed to forget network"); 7906 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7907 WifiManager.ERROR); 7908 } 7909 break; 7910 case WifiManager.START_WPS: 7911 WpsInfo wpsInfo = (WpsInfo) message.obj; 7912 WpsResult wpsResult; 7913 switch (wpsInfo.setup) { 7914 case WpsInfo.PBC: 7915 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7916 break; 7917 case WpsInfo.KEYPAD: 7918 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7919 break; 7920 case WpsInfo.DISPLAY: 7921 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7922 break; 7923 default: 7924 wpsResult = new WpsResult(Status.FAILURE); 7925 loge("Invalid setup for WPS"); 7926 break; 7927 } 7928 mWifiConfigStore.setLastSelectedConfiguration 7929 (WifiConfiguration.INVALID_NETWORK_ID); 7930 if (wpsResult.status == Status.SUCCESS) { 7931 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7932 transitionTo(mWpsRunningState); 7933 } else { 7934 loge("Failed to start WPS with config " + wpsInfo.toString()); 7935 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7936 } 7937 break; 7938 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7939 if (DBG) log("Network connection established"); 7940 mLastNetworkId = message.arg1; 7941 mLastBssid = (String) message.obj; 7942 7943 mWifiInfo.setBSSID(mLastBssid); 7944 mWifiInfo.setNetworkId(mLastNetworkId); 7945 7946 sendNetworkStateChangeBroadcast(mLastBssid); 7947 transitionTo(mObtainingIpState); 7948 break; 7949 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7950 // Calling handleNetworkDisconnect here is redundant because we might already 7951 // have called it when leaving L2ConnectedState to go to disconnecting state 7952 // or thru other path 7953 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7954 // if they are valid, and only in this case call handleNEtworkDisconnect, 7955 // TODO: this should be fixed for a L MR release 7956 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7957 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7958 // at the chip etc... 7959 if (DBG) log("ConnectModeState: Network connection lost "); 7960 handleNetworkDisconnect(); 7961 transitionTo(mDisconnectedState); 7962 break; 7963 case CMD_PNO_NETWORK_FOUND: 7964 processPnoNetworkFound((ScanResult[])message.obj); 7965 break; 7966 default: 7967 return NOT_HANDLED; 7968 } 7969 return HANDLED; 7970 } 7971 } 7972 7973 private void updateCapabilities(WifiConfiguration config) { 7974 if (config != null) { 7975 if (config.ephemeral) { 7976 mNetworkCapabilities.removeCapability( 7977 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7978 } else { 7979 mNetworkCapabilities.addCapability( 7980 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7981 } 7982 } 7983 mNetworkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7984 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7985 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7986 } 7987 7988 private class WifiNetworkAgent extends NetworkAgent { 7989 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7990 NetworkCapabilities nc, LinkProperties lp, int score) { 7991 super(l, c, TAG, ni, nc, lp, score); 7992 } 7993 protected void unwanted() { 7994 // Ignore if we're not the current networkAgent. 7995 if (this != mNetworkAgent) return; 7996 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7997 + Integer.toString(mWifiInfo.score)); 7998 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7999 } 8000 8001 @Override 8002 protected void networkStatus(int status) { 8003 if (this != mNetworkAgent) return; 8004 if (status == NetworkAgent.INVALID_NETWORK) { 8005 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 8006 + Integer.toString(mWifiInfo.score)); 8007 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 8008 } else if (status == NetworkAgent.VALID_NETWORK) { 8009 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 8010 + Integer.toString(mWifiInfo.score)); 8011 doNetworkStatus(status); 8012 } 8013 } 8014 8015 @Override 8016 protected void saveAcceptUnvalidated(boolean accept) { 8017 if (this != mNetworkAgent) return; 8018 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 8019 } 8020 8021 @Override 8022 protected void startPacketKeepalive(Message msg) { 8023 WifiStateMachine.this.sendMessage( 8024 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 8025 } 8026 8027 @Override 8028 protected void stopPacketKeepalive(Message msg) { 8029 WifiStateMachine.this.sendMessage( 8030 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 8031 } 8032 8033 @Override 8034 protected void setSignalStrengthThresholds(int[] thresholds) { 8035 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 8036 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 8037 // MAX_VALUE at the start/end of the thresholds array if necessary. 8038 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 8039 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 8040 // re-arm the hardware event. This needs to be done on the state machine thread to 8041 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 8042 // sent in the NetworkCapabilities) must be the one received from the hardware event 8043 // received, or we might skip callbacks. 8044 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 8045 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 8046 if (thresholds.length == 0) { 8047 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8048 mWifiInfo.getRssi()); 8049 return; 8050 } 8051 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 8052 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 8053 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 8054 Arrays.sort(rssiVals); 8055 byte[] rssiRange = new byte[rssiVals.length]; 8056 for (int i = 0; i < rssiVals.length; i++) { 8057 int val = rssiVals[i]; 8058 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 8059 rssiRange[i] = (byte) val; 8060 } else { 8061 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 8062 + Arrays.toString(rssiVals)); 8063 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8064 mWifiInfo.getRssi()); 8065 return; 8066 } 8067 } 8068 // TODO: Do we quash rssi values in this sorted array which are very close? 8069 mRssiRanges = rssiRange; 8070 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 8071 mWifiInfo.getRssi()); 8072 } 8073 8074 @Override 8075 protected void preventAutomaticReconnect() { 8076 if (this != mNetworkAgent) return; 8077 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 8078 } 8079 } 8080 8081 void unwantedNetwork(int reason) { 8082 sendMessage(CMD_UNWANTED_NETWORK, reason); 8083 } 8084 8085 void doNetworkStatus(int status) { 8086 sendMessage(CMD_NETWORK_STATUS, status); 8087 } 8088 8089 // rfc4186 & rfc4187: 8090 // create Permanent Identity base on IMSI, 8091 // identity = usernam@realm 8092 // with username = prefix | IMSI 8093 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 8094 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 8095 String mcc; 8096 String mnc; 8097 String prefix; 8098 8099 if (imsi == null || imsi.isEmpty()) 8100 return ""; 8101 8102 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 8103 prefix = "1"; 8104 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 8105 prefix = "0"; 8106 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 8107 prefix = "6"; 8108 else // not a valide EapMethod 8109 return ""; 8110 8111 /* extract mcc & mnc from mccMnc */ 8112 if (mccMnc != null && !mccMnc.isEmpty()) { 8113 mcc = mccMnc.substring(0, 3); 8114 mnc = mccMnc.substring(3); 8115 if (mnc.length() == 2) 8116 mnc = "0" + mnc; 8117 } else { 8118 // extract mcc & mnc from IMSI, assume mnc size is 3 8119 mcc = imsi.substring(0, 3); 8120 mnc = imsi.substring(3, 6); 8121 } 8122 8123 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 8124 } 8125 8126 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 8127 if (config == null) 8128 return false; 8129 8130 // We are still seeing a fairly high power consumption triggered by autojoin scans 8131 // Hence do partial scans only for PSK configuration that are roamable since the 8132 // primary purpose of the partial scans is roaming. 8133 // Full badn scans with exponential backoff for the purpose or extended roaming and 8134 // network switching are performed unconditionally. 8135 ScanDetailCache scanDetailCache = 8136 mWifiConfigStore.getScanDetailCache(config); 8137 if (scanDetailCache == null 8138 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 8139 || scanDetailCache.size() > 6) { 8140 //return true but to not trigger the scan 8141 return true; 8142 } 8143 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 8144 ONE_HOUR_MILLI, restrictChannelList); 8145 if (channels != null && channels.size() != 0) { 8146 StringBuilder freqs = new StringBuilder(); 8147 boolean first = true; 8148 for (Integer channel : channels) { 8149 if (!first) 8150 freqs.append(","); 8151 freqs.append(channel.toString()); 8152 first = false; 8153 } 8154 //if (DBG) { 8155 logd("starting scan for " + config.configKey() + " with " + freqs); 8156 //} 8157 // Call wifi native to start the scan 8158 if (startScanNative( 8159 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 8160 freqs.toString())) { 8161 // Only count battery consumption if scan request is accepted 8162 noteScanStart(SCAN_ALARM_SOURCE, null); 8163 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8164 } else { 8165 // used for debug only, mark scan as failed 8166 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8167 } 8168 return true; 8169 } else { 8170 if (DBG) logd("no channels for " + config.configKey()); 8171 return false; 8172 } 8173 } 8174 8175 void clearCurrentConfigBSSID(String dbg) { 8176 // Clear the bssid in the current config's network block 8177 WifiConfiguration config = getCurrentWifiConfiguration(); 8178 if (config == null) 8179 return; 8180 clearConfigBSSID(config, dbg); 8181 } 8182 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8183 if (config == null) 8184 return; 8185 if (DBG) { 8186 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8187 + " config.bssid " + config.BSSID); 8188 } 8189 config.autoJoinBSSID = "any"; 8190 config.BSSID = "any"; 8191 if (DBG) { 8192 logd(dbg + " " + config.SSID 8193 + " nid=" + Integer.toString(config.networkId)); 8194 } 8195 mWifiConfigStore.saveWifiConfigBSSID(config); 8196 } 8197 8198 class L2ConnectedState extends State { 8199 @Override 8200 public void enter() { 8201 mRssiPollToken++; 8202 if (mEnableRssiPolling) { 8203 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8204 } 8205 if (mNetworkAgent != null) { 8206 loge("Have NetworkAgent when entering L2Connected"); 8207 setNetworkDetailedState(DetailedState.DISCONNECTED); 8208 } 8209 setNetworkDetailedState(DetailedState.CONNECTING); 8210 8211 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8212 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8213 } 8214 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8215 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8216 mLinkProperties, 60); 8217 8218 // We must clear the config BSSID, as the wifi chipset may decide to roam 8219 // from this point on and having the BSSID specified in the network block would 8220 // cause the roam to faile and the device to disconnect 8221 clearCurrentConfigBSSID("L2ConnectedState"); 8222 8223 try { 8224 mIpReachabilityMonitor = new IpReachabilityMonitor( 8225 mContext, 8226 mInterfaceName, 8227 new IpReachabilityMonitor.Callback() { 8228 @Override 8229 public void notifyLost(InetAddress ip, String logMsg) { 8230 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 8231 } 8232 }); 8233 } catch (IllegalArgumentException e) { 8234 Log.wtf("Failed to create IpReachabilityMonitor", e); 8235 } 8236 } 8237 8238 @Override 8239 public void exit() { 8240 if (mIpReachabilityMonitor != null) { 8241 mIpReachabilityMonitor.stop(); 8242 mIpReachabilityMonitor = null; 8243 } 8244 8245 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8246 // Bug: 15347363 8247 // For paranoia's sake, call handleNetworkDisconnect 8248 // only if BSSID is null or last networkId 8249 // is not invalid. 8250 if (DBG) { 8251 StringBuilder sb = new StringBuilder(); 8252 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8253 if (mLastBssid !=null) { 8254 sb.append(" ").append(mLastBssid); 8255 } 8256 } 8257 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8258 handleNetworkDisconnect(); 8259 } 8260 } 8261 8262 @Override 8263 public boolean processMessage(Message message) { 8264 logStateAndMessage(message, this); 8265 8266 switch (message.what) { 8267 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8268 handlePreDhcpSetup(); 8269 break; 8270 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8271 handlePostDhcpSetup(); 8272 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 8273 if (DBG) log("DHCP successful"); 8274 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 8275 // We advance to mConnectedState because handleIPv4Success will call 8276 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 8277 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 8278 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 8279 if (DBG) { 8280 int count = -1; 8281 WifiConfiguration config = getCurrentWifiConfiguration(); 8282 if (config != null) { 8283 count = config.numConnectionFailures; 8284 } 8285 log("DHCP failure count=" + count); 8286 } 8287 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 8288 // As above, we transition to mDisconnectingState via updateLinkProperties. 8289 } 8290 break; 8291 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8292 handleSuccessfulIpConfiguration(); 8293 sendConnectedState(); 8294 transitionTo(mConnectedState); 8295 break; 8296 case CMD_IP_CONFIGURATION_LOST: 8297 // Get Link layer stats so that we get fresh tx packet counters. 8298 getWifiLinkLayerStats(true); 8299 handleIpConfigurationLost(); 8300 transitionTo(mDisconnectingState); 8301 break; 8302 case CMD_IP_REACHABILITY_LOST: 8303 if (DBG && message.obj != null) log((String) message.obj); 8304 handleIpReachabilityLost(); 8305 transitionTo(mDisconnectingState); 8306 break; 8307 case CMD_DISCONNECT: 8308 mWifiNative.disconnect(); 8309 transitionTo(mDisconnectingState); 8310 break; 8311 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8312 if (message.arg1 == 1) { 8313 mWifiNative.disconnect(); 8314 mTemporarilyDisconnectWifi = true; 8315 transitionTo(mDisconnectingState); 8316 } 8317 break; 8318 case CMD_SET_OPERATIONAL_MODE: 8319 if (message.arg1 != CONNECT_MODE) { 8320 sendMessage(CMD_DISCONNECT); 8321 deferMessage(message); 8322 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8323 noteWifiDisabledWhileAssociated(); 8324 } 8325 } 8326 mWifiConfigStore. 8327 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8328 break; 8329 case CMD_SET_COUNTRY_CODE: 8330 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8331 deferMessage(message); 8332 break; 8333 case CMD_START_SCAN: 8334 if (DBG) { 8335 logd("CMD_START_SCAN source " + message.arg1 8336 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8337 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8338 + " targetRoamBSSID=" + mTargetRoamBSSID 8339 + " RSSI=" + mWifiInfo.getRssi()); 8340 } 8341 if (message.arg1 == SCAN_ALARM_SOURCE) { 8342 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8343 // not be processed) and restart the scan if neede 8344 if (!getEnableAutoJoinWhenAssociated()) { 8345 return HANDLED; 8346 } 8347 boolean shouldScan = mScreenOn; 8348 8349 if (!checkAndRestartDelayedScan(message.arg2, 8350 shouldScan, 8351 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8352 null, null)) { 8353 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8354 logd("L2Connected CMD_START_SCAN source " 8355 + message.arg1 8356 + " " + message.arg2 + ", " + mDelayedScanCounter 8357 + " -> obsolete"); 8358 return HANDLED; 8359 } 8360 if (mP2pConnected.get()) { 8361 logd("L2Connected CMD_START_SCAN source " 8362 + message.arg1 8363 + " " + message.arg2 + ", " + mDelayedScanCounter 8364 + " ignore because P2P is connected"); 8365 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8366 return HANDLED; 8367 } 8368 boolean tryFullBandScan = false; 8369 boolean restrictChannelList = false; 8370 long now_ms = System.currentTimeMillis(); 8371 if (DBG) { 8372 logd("CMD_START_SCAN with age=" 8373 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8374 + " interval=" + fullBandConnectedTimeIntervalMilli 8375 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8376 } 8377 if (mWifiInfo != null) { 8378 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8379 (now_ms - lastFullBandConnectedTimeMilli) 8380 > fullBandConnectedTimeIntervalMilli) { 8381 if (DBG) { 8382 logd("CMD_START_SCAN try full band scan age=" 8383 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8384 + " interval=" + fullBandConnectedTimeIntervalMilli 8385 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8386 } 8387 tryFullBandScan = true; 8388 } 8389 8390 if (mWifiInfo.txSuccessRate > 8391 mWifiConfigStore.maxTxPacketForFullScans 8392 || mWifiInfo.rxSuccessRate > 8393 mWifiConfigStore.maxRxPacketForFullScans) { 8394 // Too much traffic at the interface, hence no full band scan 8395 if (DBG) { 8396 logd("CMD_START_SCAN " + 8397 "prevent full band scan due to pkt rate"); 8398 } 8399 tryFullBandScan = false; 8400 } 8401 8402 if (mWifiInfo.txSuccessRate > 8403 mWifiConfigStore.maxTxPacketForPartialScans 8404 || mWifiInfo.rxSuccessRate > 8405 mWifiConfigStore.maxRxPacketForPartialScans) { 8406 // Don't scan if lots of packets are being sent 8407 restrictChannelList = true; 8408 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8409 if (DBG) { 8410 logd("CMD_START_SCAN source " + message.arg1 8411 + " ...and ignore scans" 8412 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8413 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8414 } 8415 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8416 return HANDLED; 8417 } 8418 } 8419 } 8420 8421 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8422 if (DBG) { 8423 logd("CMD_START_SCAN full=" + 8424 tryFullBandScan); 8425 } 8426 if (currentConfiguration != null) { 8427 if (fullBandConnectedTimeIntervalMilli 8428 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8429 // Sanity 8430 fullBandConnectedTimeIntervalMilli 8431 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8432 } 8433 if (tryFullBandScan) { 8434 lastFullBandConnectedTimeMilli = now_ms; 8435 if (fullBandConnectedTimeIntervalMilli 8436 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8437 // Increase the interval 8438 fullBandConnectedTimeIntervalMilli 8439 = fullBandConnectedTimeIntervalMilli 8440 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8441 8442 if (DBG) { 8443 logd("CMD_START_SCAN bump interval =" 8444 + fullBandConnectedTimeIntervalMilli); 8445 } 8446 } 8447 handleScanRequest( 8448 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8449 } else { 8450 if (!startScanForConfiguration( 8451 currentConfiguration, restrictChannelList)) { 8452 if (DBG) { 8453 logd("starting scan, " + 8454 " did not find channels -> full"); 8455 } 8456 lastFullBandConnectedTimeMilli = now_ms; 8457 if (fullBandConnectedTimeIntervalMilli 8458 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8459 // Increase the interval 8460 fullBandConnectedTimeIntervalMilli 8461 = fullBandConnectedTimeIntervalMilli 8462 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8463 8464 if (DBG) { 8465 logd("CMD_START_SCAN bump interval =" 8466 + fullBandConnectedTimeIntervalMilli); 8467 } 8468 } 8469 handleScanRequest( 8470 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8471 } 8472 } 8473 8474 } else { 8475 logd("CMD_START_SCAN : connected mode and no configuration"); 8476 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8477 } 8478 } else { 8479 // Not scan alarm source 8480 return NOT_HANDLED; 8481 } 8482 break; 8483 /* Ignore connection to same network */ 8484 case WifiManager.CONNECT_NETWORK: 8485 int netId = message.arg1; 8486 if (mWifiInfo.getNetworkId() == netId) { 8487 break; 8488 } 8489 return NOT_HANDLED; 8490 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8491 mWifiInfo.setBSSID((String) message.obj); 8492 mLastNetworkId = message.arg1; 8493 mWifiInfo.setNetworkId(mLastNetworkId); 8494 if(!mLastBssid.equals((String) message.obj)) { 8495 mLastBssid = (String) message.obj; 8496 sendNetworkStateChangeBroadcast(mLastBssid); 8497 } 8498 break; 8499 case CMD_RSSI_POLL: 8500 if (message.arg1 == mRssiPollToken) { 8501 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8502 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8503 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8504 if (stats != null) { 8505 // Sanity check the results provided by driver 8506 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8507 && (stats.rssi_mgmt == 0 8508 || stats.beacon_rx == 0)) { 8509 stats = null; 8510 } 8511 } 8512 // Get Info and continue polling 8513 fetchRssiLinkSpeedAndFrequencyNative(); 8514 calculateWifiScore(stats); 8515 } 8516 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8517 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8518 8519 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8520 } else { 8521 // Polling has completed 8522 } 8523 break; 8524 case CMD_ENABLE_RSSI_POLL: 8525 cleanWifiScore(); 8526 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8527 mEnableRssiPolling = (message.arg1 == 1); 8528 } else { 8529 mEnableRssiPolling = false; 8530 } 8531 mRssiPollToken++; 8532 if (mEnableRssiPolling) { 8533 // First poll 8534 fetchRssiLinkSpeedAndFrequencyNative(); 8535 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8536 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8537 } 8538 break; 8539 case WifiManager.RSSI_PKTCNT_FETCH: 8540 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8541 fetchRssiLinkSpeedAndFrequencyNative(); 8542 info.rssi = mWifiInfo.getRssi(); 8543 fetchPktcntNative(info); 8544 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8545 break; 8546 case CMD_DELAYED_NETWORK_DISCONNECT: 8547 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8548 8549 // Ignore if we are not debouncing 8550 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8551 + message.arg1); 8552 return HANDLED; 8553 } else { 8554 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8555 + message.arg1); 8556 8557 linkDebouncing = false; 8558 // If we are still debouncing while this message comes, 8559 // it means we were not able to reconnect within the alloted time 8560 // = LINK_FLAPPING_DEBOUNCE_MSEC 8561 // and thus, trigger a real disconnect 8562 handleNetworkDisconnect(); 8563 transitionTo(mDisconnectedState); 8564 } 8565 break; 8566 case CMD_ASSOCIATED_BSSID: 8567 if ((String) message.obj == null) { 8568 logw("Associated command w/o BSSID"); 8569 break; 8570 } 8571 mLastBssid = (String) message.obj; 8572 if (mLastBssid != null 8573 && (mWifiInfo.getBSSID() == null 8574 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8575 mWifiInfo.setBSSID((String) message.obj); 8576 sendNetworkStateChangeBroadcast(mLastBssid); 8577 } 8578 break; 8579 case CMD_START_RSSI_MONITORING_OFFLOAD: 8580 case CMD_RSSI_THRESHOLD_BREACH: 8581 byte currRssi = (byte) message.arg1; 8582 processRssiThreshold(currRssi, message.what); 8583 break; 8584 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8585 stopRssiMonitoringOffload(); 8586 break; 8587 case CMD_RESET_SIM_NETWORKS: 8588 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8589 WifiConfiguration config = 8590 mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 8591 if (mWifiConfigStore.isSimConfig(config)) { 8592 mWifiNative.disconnect(); 8593 transitionTo(mDisconnectingState); 8594 } 8595 } 8596 /* allow parent state to reset data for other networks */ 8597 return NOT_HANDLED; 8598 default: 8599 return NOT_HANDLED; 8600 } 8601 8602 return HANDLED; 8603 } 8604 } 8605 8606 class ObtainingIpState extends State { 8607 @Override 8608 public void enter() { 8609 if (DBG) { 8610 String key = ""; 8611 if (getCurrentWifiConfiguration() != null) { 8612 key = getCurrentWifiConfiguration().configKey(); 8613 } 8614 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8615 + " " + key + " " 8616 + " roam=" + mAutoRoaming 8617 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8618 + " watchdog= " + obtainingIpWatchdogCount); 8619 } 8620 8621 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8622 // We might still be roaming 8623 linkDebouncing = false; 8624 8625 // Send event to CM & network change broadcast 8626 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8627 8628 // We must clear the config BSSID, as the wifi chipset may decide to roam 8629 // from this point on and having the BSSID specified in the network block would 8630 // cause the roam to faile and the device to disconnect 8631 clearCurrentConfigBSSID("ObtainingIpAddress"); 8632 8633 try { 8634 mNwService.enableIpv6(mInterfaceName); 8635 } catch (RemoteException re) { 8636 loge("Failed to enable IPv6: " + re); 8637 } catch (IllegalStateException e) { 8638 loge("Failed to enable IPv6: " + e); 8639 } 8640 8641 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8642 if (isRoaming()) { 8643 renewDhcp(); 8644 } else { 8645 // Remove any IP address on the interface in case we're switching from static 8646 // IP configuration to DHCP. This is safe because if we get here when not 8647 // roaming, we don't have a usable address. 8648 clearIPv4Address(mInterfaceName); 8649 startDhcp(); 8650 } 8651 obtainingIpWatchdogCount++; 8652 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8653 // Get Link layer stats so as we get fresh tx packet counters 8654 getWifiLinkLayerStats(true); 8655 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8656 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8657 } else { 8658 // stop any running dhcp before assigning static IP 8659 stopDhcp(); 8660 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8661 mLastNetworkId); 8662 if (config.ipAddress == null) { 8663 logd("Static IP lacks address"); 8664 sendMessage(CMD_STATIC_IP_FAILURE); 8665 } else { 8666 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8667 ifcg.setLinkAddress(config.ipAddress); 8668 ifcg.setInterfaceUp(); 8669 try { 8670 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8671 if (DBG) log("Static IP configuration succeeded"); 8672 DhcpResults dhcpResults = new DhcpResults(config); 8673 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8674 } catch (RemoteException re) { 8675 loge("Static IP configuration failed: " + re); 8676 sendMessage(CMD_STATIC_IP_FAILURE); 8677 } catch (IllegalStateException e) { 8678 loge("Static IP configuration failed: " + e); 8679 sendMessage(CMD_STATIC_IP_FAILURE); 8680 } 8681 } 8682 } 8683 } 8684 @Override 8685 public boolean processMessage(Message message) { 8686 logStateAndMessage(message, this); 8687 8688 switch(message.what) { 8689 case CMD_STATIC_IP_SUCCESS: 8690 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8691 break; 8692 case CMD_STATIC_IP_FAILURE: 8693 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8694 break; 8695 case CMD_AUTO_CONNECT: 8696 case CMD_AUTO_ROAM: 8697 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8698 break; 8699 case WifiManager.SAVE_NETWORK: 8700 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8701 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8702 deferMessage(message); 8703 break; 8704 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8705 case CMD_SET_HIGH_PERF_MODE: 8706 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8707 deferMessage(message); 8708 break; 8709 /* Defer scan request since we should not switch to other channels at DHCP */ 8710 case CMD_START_SCAN: 8711 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8712 deferMessage(message); 8713 break; 8714 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8715 if (message.arg1 == obtainingIpWatchdogCount) { 8716 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8717 + obtainingIpWatchdogCount); 8718 handleIpConfigurationLost(); 8719 transitionTo(mDisconnectingState); 8720 break; 8721 } 8722 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8723 break; 8724 default: 8725 return NOT_HANDLED; 8726 } 8727 return HANDLED; 8728 } 8729 } 8730 8731 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8732 // sets mPoorNetworkDetectionEnabled to false. 8733 class VerifyingLinkState extends State { 8734 @Override 8735 public void enter() { 8736 log(getName() + " enter"); 8737 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8738 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8739 sendNetworkStateChangeBroadcast(mLastBssid); 8740 // End roaming 8741 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8742 } 8743 @Override 8744 public boolean processMessage(Message message) { 8745 logStateAndMessage(message, this); 8746 8747 switch (message.what) { 8748 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8749 // Stay here 8750 log(getName() + " POOR_LINK_DETECTED: no transition"); 8751 break; 8752 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8753 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8754 sendConnectedState(); 8755 transitionTo(mConnectedState); 8756 break; 8757 default: 8758 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8759 return NOT_HANDLED; 8760 } 8761 return HANDLED; 8762 } 8763 } 8764 8765 private void sendConnectedState() { 8766 // If this network was explicitly selected by the user, evaluate whether to call 8767 // explicitlySelected() so the system can treat it appropriately. 8768 WifiConfiguration config = getCurrentWifiConfiguration(); 8769 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8770 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8771 if (DBG) { 8772 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8773 } 8774 if (prompt) { 8775 // Selected by the user via Settings or QuickSettings. If this network has Internet 8776 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8777 // really want to switch, or has already confirmed and selected "Don't ask again". 8778 if (DBG) { 8779 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8780 } 8781 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8782 } 8783 } 8784 8785 setNetworkDetailedState(DetailedState.CONNECTED); 8786 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8787 sendNetworkStateChangeBroadcast(mLastBssid); 8788 } 8789 8790 class RoamingState extends State { 8791 boolean mAssociated; 8792 @Override 8793 public void enter() { 8794 if (DBG) { 8795 log("RoamingState Enter" 8796 + " mScreenOn=" + mScreenOn ); 8797 } 8798 setScanAlarm(false); 8799 8800 // Make sure we disconnect if roaming fails 8801 roamWatchdogCount++; 8802 logd("Start Roam Watchdog " + roamWatchdogCount); 8803 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8804 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8805 mAssociated = false; 8806 } 8807 @Override 8808 public boolean processMessage(Message message) { 8809 logStateAndMessage(message, this); 8810 WifiConfiguration config; 8811 switch (message.what) { 8812 case CMD_IP_CONFIGURATION_LOST: 8813 config = getCurrentWifiConfiguration(); 8814 if (config != null) { 8815 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8816 mWifiConfigStore.noteRoamingFailure(config, 8817 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8818 } 8819 return NOT_HANDLED; 8820 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8821 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8822 return HANDLED; 8823 case CMD_UNWANTED_NETWORK: 8824 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8825 return HANDLED; 8826 case CMD_SET_OPERATIONAL_MODE: 8827 if (message.arg1 != CONNECT_MODE) { 8828 deferMessage(message); 8829 } 8830 break; 8831 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8832 /** 8833 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8834 * before NETWORK_DISCONNECTION_EVENT 8835 * And there is an associated BSSID corresponding to our target BSSID, then 8836 * we have missed the network disconnection, transition to mDisconnectedState 8837 * and handle the rest of the events there. 8838 */ 8839 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8840 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8841 || stateChangeResult.state == SupplicantState.INACTIVE 8842 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8843 if (DBG) { 8844 log("STATE_CHANGE_EVENT in roaming state " 8845 + stateChangeResult.toString() ); 8846 } 8847 if (stateChangeResult.BSSID != null 8848 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8849 handleNetworkDisconnect(); 8850 transitionTo(mDisconnectedState); 8851 } 8852 } 8853 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8854 // We completed the layer2 roaming part 8855 mAssociated = true; 8856 if (stateChangeResult.BSSID != null) { 8857 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8858 } 8859 } 8860 break; 8861 case CMD_ROAM_WATCHDOG_TIMER: 8862 if (roamWatchdogCount == message.arg1) { 8863 if (DBG) log("roaming watchdog! -> disconnect"); 8864 mRoamFailCount++; 8865 handleNetworkDisconnect(); 8866 mWifiNative.disconnect(); 8867 transitionTo(mDisconnectedState); 8868 } 8869 break; 8870 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8871 if (mAssociated) { 8872 if (DBG) log("roaming and Network connection established"); 8873 mLastNetworkId = message.arg1; 8874 mLastBssid = (String) message.obj; 8875 mWifiInfo.setBSSID(mLastBssid); 8876 mWifiInfo.setNetworkId(mLastNetworkId); 8877 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8878 sendNetworkStateChangeBroadcast(mLastBssid); 8879 transitionTo(mObtainingIpState); 8880 } else { 8881 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8882 } 8883 break; 8884 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8885 // Throw away but only if it corresponds to the network we're roaming to 8886 String bssid = (String)message.obj; 8887 if (true) { 8888 String target = ""; 8889 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8890 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8891 + " BSSID=" + bssid 8892 + " target=" + target); 8893 } 8894 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8895 handleNetworkDisconnect(); 8896 transitionTo(mDisconnectedState); 8897 } 8898 break; 8899 case WifiMonitor.SSID_TEMP_DISABLED: 8900 // Auth error while roaming 8901 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8902 + " id=" + Integer.toString(message.arg1) 8903 + " isRoaming=" + isRoaming() 8904 + " roam=" + Integer.toString(mAutoRoaming)); 8905 if (message.arg1 == mLastNetworkId) { 8906 config = getCurrentWifiConfiguration(); 8907 if (config != null) { 8908 mWifiLogger.captureBugReportData( 8909 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8910 mWifiConfigStore.noteRoamingFailure(config, 8911 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8912 } 8913 handleNetworkDisconnect(); 8914 transitionTo(mDisconnectingState); 8915 } 8916 return NOT_HANDLED; 8917 case CMD_START_SCAN: 8918 deferMessage(message); 8919 break; 8920 default: 8921 return NOT_HANDLED; 8922 } 8923 return HANDLED; 8924 } 8925 8926 @Override 8927 public void exit() { 8928 logd("WifiStateMachine: Leaving Roaming state"); 8929 } 8930 } 8931 8932 class ConnectedState extends State { 8933 @Override 8934 public void enter() { 8935 String address; 8936 updateDefaultRouteMacAddress(1000); 8937 if (DBG) { 8938 log("Enter ConnectedState " 8939 + " mScreenOn=" + mScreenOn 8940 + " scanperiod=" 8941 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8942 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8943 + mWifiConfigStore.enableHalBasedPno.get() 8944 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8945 } 8946 if (mScreenOn 8947 && getEnableAutoJoinWhenAssociated()) { 8948 if (useHalBasedAutoJoinOffload()) { 8949 startGScanConnectedModeOffload("connectedEnter"); 8950 } else { 8951 // restart scan alarm 8952 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8953 null, null); 8954 } 8955 } 8956 registerConnected(); 8957 lastConnectAttemptTimestamp = 0; 8958 targetWificonfiguration = null; 8959 // Paranoia 8960 linkDebouncing = false; 8961 8962 // Not roaming anymore 8963 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8964 8965 if (testNetworkDisconnect) { 8966 testNetworkDisconnectCounter++; 8967 logd("ConnectedState Enter start disconnect test " + 8968 testNetworkDisconnectCounter); 8969 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8970 testNetworkDisconnectCounter, 0), 15000); 8971 } 8972 8973 // Reenable all networks, allow for hidden networks to be scanned 8974 mWifiConfigStore.enableAllNetworks(); 8975 8976 mLastDriverRoamAttempt = 0; 8977 8978 //startLazyRoam(); 8979 } 8980 @Override 8981 public boolean processMessage(Message message) { 8982 WifiConfiguration config = null; 8983 logStateAndMessage(message, this); 8984 8985 switch (message.what) { 8986 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8987 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8988 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8989 return HANDLED; 8990 } 8991 /* If we are still in Disconnected state after having discovered a valid 8992 * network this means autojoin didnt managed to associate to the network, 8993 * then restart PNO so as we will try associating to it again. 8994 */ 8995 if (useHalBasedAutoJoinOffload()) { 8996 if (mGScanStartTimeMilli == 0) { 8997 // If offload is not started, then start it... 8998 startGScanConnectedModeOffload("connectedRestart"); 8999 } else { 9000 // If offload is already started, then check if we need to increase 9001 // the scan period and restart the Gscan 9002 long now = System.currentTimeMillis(); 9003 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9004 && ((now - mGScanStartTimeMilli) 9005 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9006 && (mGScanPeriodMilli 9007 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9008 { 9009 startConnectedGScan("Connected restart gscan"); 9010 } 9011 } 9012 } 9013 break; 9014 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 9015 updateAssociatedScanPermission(); 9016 break; 9017 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 9018 if (DBG) log("Watchdog reports poor link"); 9019 transitionTo(mVerifyingLinkState); 9020 break; 9021 case CMD_UNWANTED_NETWORK: 9022 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 9023 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 9024 mWifiNative.disconnect(); 9025 transitionTo(mDisconnectingState); 9026 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 9027 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 9028 config = getCurrentWifiConfiguration(); 9029 if (config != null) { 9030 // Disable autojoin 9031 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 9032 config.validatedInternetAccess = false; 9033 // Clear last-selected status, as being last-selected also avoids 9034 // disabling auto-join. 9035 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 9036 mWifiConfigStore.setLastSelectedConfiguration( 9037 WifiConfiguration.INVALID_NETWORK_ID); 9038 } 9039 } 9040 config.numNoInternetAccessReports += 1; 9041 config.dirty = true; 9042 mWifiConfigStore.writeKnownNetworkHistory(false); 9043 } 9044 } 9045 return HANDLED; 9046 case CMD_NETWORK_STATUS: 9047 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 9048 config = getCurrentWifiConfiguration(); 9049 if (config != null) { 9050 if (!config.validatedInternetAccess 9051 || config.numNoInternetAccessReports != 0) { 9052 config.dirty = true; 9053 } 9054 // re-enable autojoin 9055 config.numNoInternetAccessReports = 0; 9056 config.validatedInternetAccess = true; 9057 mWifiConfigStore.writeKnownNetworkHistory(false); 9058 } 9059 } 9060 return HANDLED; 9061 case CMD_ACCEPT_UNVALIDATED: 9062 boolean accept = (message.arg1 != 0); 9063 config = getCurrentWifiConfiguration(); 9064 if (config != null) { 9065 config.noInternetAccessExpected = accept; 9066 } 9067 return HANDLED; 9068 case CMD_TEST_NETWORK_DISCONNECT: 9069 // Force a disconnect 9070 if (message.arg1 == testNetworkDisconnectCounter) { 9071 mWifiNative.disconnect(); 9072 } 9073 break; 9074 case CMD_ASSOCIATED_BSSID: 9075 // ASSOCIATING to a new BSSID while already connected, indicates 9076 // that driver is roaming 9077 mLastDriverRoamAttempt = System.currentTimeMillis(); 9078 String toBSSID = (String)message.obj; 9079 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 9080 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 9081 } 9082 return NOT_HANDLED; 9083 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9084 long lastRoam = 0; 9085 if (mLastDriverRoamAttempt != 0) { 9086 // Calculate time since last driver roam attempt 9087 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 9088 mLastDriverRoamAttempt = 0; 9089 } 9090 if (unexpectedDisconnectedReason(message.arg2)) { 9091 mWifiLogger.captureBugReportData( 9092 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 9093 } 9094 config = getCurrentWifiConfiguration(); 9095 if (mScreenOn 9096 && !linkDebouncing 9097 && config != null 9098 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 9099 && !mWifiConfigStore.isLastSelectedConfiguration(config) 9100 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 9101 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 9102 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 9103 && mWifiInfo.getRssi() > 9104 WifiConfiguration.BAD_RSSI_24) 9105 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 9106 && mWifiInfo.getRssi() > 9107 WifiConfiguration.BAD_RSSI_5))) { 9108 // Start de-bouncing the L2 disconnection: 9109 // this L2 disconnection might be spurious. 9110 // Hence we allow 7 seconds for the state machine to try 9111 // to reconnect, go thru the 9112 // roaming cycle and enter Obtaining IP address 9113 // before signalling the disconnect to ConnectivityService and L3 9114 startScanForConfiguration(getCurrentWifiConfiguration(), false); 9115 linkDebouncing = true; 9116 9117 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 9118 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 9119 if (DBG) { 9120 log("NETWORK_DISCONNECTION_EVENT in connected state" 9121 + " BSSID=" + mWifiInfo.getBSSID() 9122 + " RSSI=" + mWifiInfo.getRssi() 9123 + " freq=" + mWifiInfo.getFrequency() 9124 + " reason=" + message.arg2 9125 + " -> debounce"); 9126 } 9127 return HANDLED; 9128 } else { 9129 if (DBG) { 9130 int ajst = -1; 9131 if (config != null) ajst = config.autoJoinStatus; 9132 log("NETWORK_DISCONNECTION_EVENT in connected state" 9133 + " BSSID=" + mWifiInfo.getBSSID() 9134 + " RSSI=" + mWifiInfo.getRssi() 9135 + " freq=" + mWifiInfo.getFrequency() 9136 + " was debouncing=" + linkDebouncing 9137 + " reason=" + message.arg2 9138 + " ajst=" + ajst); 9139 } 9140 } 9141 break; 9142 case CMD_AUTO_ROAM: 9143 // Clear the driver roam indication since we are attempting a framework roam 9144 mLastDriverRoamAttempt = 0; 9145 9146 /* Connect command coming from auto-join */ 9147 ScanResult candidate = (ScanResult)message.obj; 9148 String bssid = "any"; 9149 if (candidate != null && candidate.is5GHz()) { 9150 // Only lock BSSID for 5GHz networks 9151 bssid = candidate.BSSID; 9152 } 9153 int netId = mLastNetworkId; 9154 config = getCurrentWifiConfiguration(); 9155 9156 9157 if (config == null) { 9158 loge("AUTO_ROAM and no config, bail out..."); 9159 break; 9160 } 9161 9162 logd("CMD_AUTO_ROAM sup state " 9163 + mSupplicantStateTracker.getSupplicantStateName() 9164 + " my state " + getCurrentState().getName() 9165 + " nid=" + Integer.toString(netId) 9166 + " config " + config.configKey() 9167 + " roam=" + Integer.toString(message.arg2) 9168 + " to " + bssid 9169 + " targetRoamBSSID " + mTargetRoamBSSID); 9170 9171 /* Save the BSSID so as to lock it @ firmware */ 9172 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 9173 logd("AUTO_ROAM nothing to do"); 9174 // Same BSSID, nothing to do 9175 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9176 break; 9177 }; 9178 9179 // Make sure the network is enabled, since supplicant will not re-enable it 9180 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 9181 9182 if (deferForUserInput(message, netId, false)) { 9183 break; 9184 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 9185 WifiConfiguration.USER_BANNED) { 9186 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9187 WifiManager.NOT_AUTHORIZED); 9188 break; 9189 } 9190 9191 boolean ret = false; 9192 if (mLastNetworkId != netId) { 9193 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 9194 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 9195 ret = true; 9196 } 9197 } else { 9198 ret = mWifiNative.reassociate(); 9199 } 9200 if (ret) { 9201 lastConnectAttemptTimestamp = System.currentTimeMillis(); 9202 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 9203 9204 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 9205 mAutoRoaming = message.arg2; 9206 transitionTo(mRoamingState); 9207 9208 } else { 9209 loge("Failed to connect config: " + config + " netId: " + netId); 9210 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9211 WifiManager.ERROR); 9212 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9213 break; 9214 } 9215 break; 9216 case CMD_START_IP_PACKET_OFFLOAD: { 9217 int slot = message.arg1; 9218 int intervalSeconds = message.arg2; 9219 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9220 byte[] dstMac; 9221 try { 9222 InetAddress gateway = RouteInfo.selectBestRoute( 9223 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9224 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9225 dstMac = macAddressFromString(dstMacStr); 9226 } catch (NullPointerException|IllegalArgumentException e) { 9227 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9228 mNetworkAgent.onPacketKeepaliveEvent(slot, 9229 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9230 break; 9231 } 9232 pkt.dstMac = dstMac; 9233 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9234 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9235 break; 9236 } 9237 default: 9238 return NOT_HANDLED; 9239 } 9240 return HANDLED; 9241 } 9242 9243 @Override 9244 public void exit() { 9245 logd("WifiStateMachine: Leaving Connected state"); 9246 setScanAlarm(false); 9247 mLastDriverRoamAttempt = 0; 9248 9249 stopLazyRoam(); 9250 9251 mWhiteListedSsids = null; 9252 } 9253 } 9254 9255 class DisconnectingState extends State { 9256 9257 @Override 9258 public void enter() { 9259 9260 if (PDBG) { 9261 logd(" Enter DisconnectingState State scan interval " 9262 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9263 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9264 + " screenOn=" + mScreenOn); 9265 } 9266 9267 // Make sure we disconnect: we enter this state prior to connecting to a new 9268 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9269 // event which in this case will be indicating that supplicant started to associate. 9270 // In some cases supplicant doesn't ignore the connect requests (it might not 9271 // find the target SSID in its cache), 9272 // Therefore we end up stuck that state, hence the need for the watchdog. 9273 disconnectingWatchdogCount++; 9274 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9275 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9276 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9277 } 9278 9279 @Override 9280 public boolean processMessage(Message message) { 9281 logStateAndMessage(message, this); 9282 switch (message.what) { 9283 case CMD_SET_OPERATIONAL_MODE: 9284 if (message.arg1 != CONNECT_MODE) { 9285 deferMessage(message); 9286 } 9287 break; 9288 case CMD_START_SCAN: 9289 deferMessage(message); 9290 return HANDLED; 9291 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9292 if (disconnectingWatchdogCount == message.arg1) { 9293 if (DBG) log("disconnecting watchdog! -> disconnect"); 9294 handleNetworkDisconnect(); 9295 transitionTo(mDisconnectedState); 9296 } 9297 break; 9298 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9299 /** 9300 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9301 * we have missed the network disconnection, transition to mDisconnectedState 9302 * and handle the rest of the events there 9303 */ 9304 deferMessage(message); 9305 handleNetworkDisconnect(); 9306 transitionTo(mDisconnectedState); 9307 break; 9308 default: 9309 return NOT_HANDLED; 9310 } 9311 return HANDLED; 9312 } 9313 } 9314 9315 class DisconnectedState extends State { 9316 @Override 9317 public void enter() { 9318 // We dont scan frequently if this is a temporary disconnect 9319 // due to p2p 9320 if (mTemporarilyDisconnectWifi) { 9321 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9322 return; 9323 } 9324 9325 if (PDBG) { 9326 logd(" Enter DisconnectedState scan interval " 9327 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9328 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9329 + " screenOn=" + mScreenOn 9330 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9331 + mWifiConfigStore.enableHalBasedPno.get()); 9332 } 9333 9334 /** clear the roaming state, if we were roaming, we failed */ 9335 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 9336 9337 if (useHalBasedAutoJoinOffload()) { 9338 startGScanDisconnectedModeOffload("disconnectedEnter"); 9339 } else { 9340 if (mScreenOn) { 9341 /** 9342 * screen lit and => start scan immediately 9343 */ 9344 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9345 } else { 9346 /** 9347 * screen dark and PNO supported => scan alarm disabled 9348 */ 9349 if (mBackgroundScanSupported) { 9350 /* If a regular scan result is pending, do not initiate background 9351 * scan until the scan results are returned. This is needed because 9352 * initiating a background scan will cancel the regular scan and 9353 * scan results will not be returned until background scanning is 9354 * cleared 9355 */ 9356 if (!mIsScanOngoing) { 9357 enableBackgroundScan(true); 9358 } 9359 } else { 9360 setScanAlarm(true); 9361 } 9362 } 9363 } 9364 9365 /** 9366 * If we have no networks saved, the supplicant stops doing the periodic scan. 9367 * The scans are useful to notify the user of the presence of an open network. 9368 * Note that these are not wake up scans. 9369 */ 9370 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9371 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9372 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9373 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9374 } 9375 9376 mDisconnectedTimeStamp = System.currentTimeMillis(); 9377 mDisconnectedPnoAlarmCount = 0; 9378 } 9379 @Override 9380 public boolean processMessage(Message message) { 9381 boolean ret = HANDLED; 9382 9383 logStateAndMessage(message, this); 9384 9385 switch (message.what) { 9386 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9387 if (mP2pConnected.get()) break; 9388 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9389 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9390 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9391 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9392 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9393 } 9394 break; 9395 case WifiManager.FORGET_NETWORK: 9396 case CMD_REMOVE_NETWORK: 9397 case CMD_REMOVE_APP_CONFIGURATIONS: 9398 case CMD_REMOVE_USER_CONFIGURATIONS: 9399 // Set up a delayed message here. After the forget/remove is handled 9400 // the handled delayed message will determine if there is a need to 9401 // scan and continue 9402 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9403 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9404 ret = NOT_HANDLED; 9405 break; 9406 case CMD_SET_OPERATIONAL_MODE: 9407 if (message.arg1 != CONNECT_MODE) { 9408 mOperationalMode = message.arg1; 9409 9410 mWifiConfigStore.disableAllNetworks(); 9411 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9412 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9413 setWifiState(WIFI_STATE_DISABLED); 9414 } 9415 transitionTo(mScanModeState); 9416 } 9417 mWifiConfigStore. 9418 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9419 break; 9420 /* Ignore network disconnect */ 9421 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9422 break; 9423 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9424 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9425 if (DBG) { 9426 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9427 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9428 + " debouncing=" + linkDebouncing); 9429 } 9430 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9431 /* ConnectModeState does the rest of the handling */ 9432 ret = NOT_HANDLED; 9433 break; 9434 case CMD_START_SCAN: 9435 if (!checkOrDeferScanAllowed(message)) { 9436 // The scan request was rescheduled 9437 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9438 return HANDLED; 9439 } 9440 if (message.arg1 == SCAN_ALARM_SOURCE) { 9441 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9442 // not be processed) and restart the scan 9443 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9444 if (mP2pConnected.get()) { 9445 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9446 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9447 period); 9448 } 9449 if (!checkAndRestartDelayedScan(message.arg2, 9450 true, period, null, null)) { 9451 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9452 logd("Disconnected CMD_START_SCAN source " 9453 + message.arg1 9454 + " " + message.arg2 + ", " + mDelayedScanCounter 9455 + " -> obsolete"); 9456 return HANDLED; 9457 } 9458 /* Disable background scan temporarily during a regular scan */ 9459 enableBackgroundScan(false); 9460 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9461 ret = HANDLED; 9462 } else { 9463 9464 /* 9465 * The SCAN request is not handled in this state and 9466 * would eventually might/will get handled in the 9467 * parent's state. The PNO, if already enabled had to 9468 * get disabled before the SCAN trigger. Hence, stop 9469 * the PNO if already enabled in this state, though the 9470 * SCAN request is not handled(PNO disable before the 9471 * SCAN trigger in any other state is not the right 9472 * place to issue). 9473 */ 9474 9475 enableBackgroundScan(false); 9476 ret = NOT_HANDLED; 9477 } 9478 break; 9479 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9480 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9481 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9482 return HANDLED; 9483 } 9484 /* If we are still in Disconnected state after having discovered a valid 9485 * network this means autojoin didnt managed to associate to the network, 9486 * then restart PNO so as we will try associating to it again. 9487 */ 9488 if (useHalBasedAutoJoinOffload()) { 9489 if (mGScanStartTimeMilli == 0) { 9490 // If offload is not started, then start it... 9491 startGScanDisconnectedModeOffload("disconnectedRestart"); 9492 } else { 9493 // If offload is already started, then check if we need to increase 9494 // the scan period and restart the Gscan 9495 long now = System.currentTimeMillis(); 9496 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9497 && ((now - mGScanStartTimeMilli) 9498 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9499 && (mGScanPeriodMilli 9500 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9501 { 9502 startDisconnectedGScan("disconnected restart gscan"); 9503 } 9504 } 9505 } else { 9506 // If we are still disconnected for a short while after having found a 9507 // network thru PNO, then something went wrong, and for some reason we 9508 // couldn't join this network. 9509 // It might be due to a SW bug in supplicant or the wifi stack, or an 9510 // interoperability issue, or we try to join a bad bss and failed 9511 // In that case we want to restart pno so as to make sure that we will 9512 // attempt again to join that network. 9513 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9514 enableBackgroundScan(false); 9515 enableBackgroundScan(true); 9516 } 9517 return HANDLED; 9518 } 9519 break; 9520 case WifiMonitor.SCAN_RESULTS_EVENT: 9521 case WifiMonitor.SCAN_FAILED_EVENT: 9522 /* Re-enable background scan when a pending scan result is received */ 9523 if (!mScreenOn && mIsScanOngoing 9524 && mBackgroundScanSupported 9525 && !useHalBasedAutoJoinOffload()) { 9526 enableBackgroundScan(true); 9527 } else if (!mScreenOn 9528 && !mIsScanOngoing 9529 && mBackgroundScanSupported 9530 && !useHalBasedAutoJoinOffload()) { 9531 // We receive scan results from legacy PNO, hence restart the PNO alarm 9532 int delay; 9533 if (mDisconnectedPnoAlarmCount < 1) { 9534 delay = 30 * 1000; 9535 } else if (mDisconnectedPnoAlarmCount < 3) { 9536 delay = 60 * 1000; 9537 } else { 9538 delay = 360 * 1000; 9539 } 9540 mDisconnectedPnoAlarmCount++; 9541 if (VDBG) { 9542 logd("Starting PNO alarm " + delay); 9543 } 9544 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9545 System.currentTimeMillis() + delay, 9546 mPnoIntent); 9547 } 9548 /* Handled in parent state */ 9549 ret = NOT_HANDLED; 9550 break; 9551 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9552 NetworkInfo info = (NetworkInfo) message.obj; 9553 mP2pConnected.set(info.isConnected()); 9554 if (mP2pConnected.get()) { 9555 int defaultInterval = mContext.getResources().getInteger( 9556 R.integer.config_wifi_scan_interval_p2p_connected); 9557 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9558 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9559 defaultInterval); 9560 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9561 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9562 if (DBG) log("Turn on scanning after p2p disconnected"); 9563 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9564 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9565 } else { 9566 // If P2P is not connected and there are saved networks, then restart 9567 // scanning at the normal period. This is necessary because scanning might 9568 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9569 // was set to zero. 9570 if (useHalBasedAutoJoinOffload()) { 9571 startGScanDisconnectedModeOffload("p2pRestart"); 9572 } else { 9573 startDelayedScan( 9574 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9575 null, null); 9576 } 9577 } 9578 break; 9579 case CMD_RECONNECT: 9580 case CMD_REASSOCIATE: 9581 if (mTemporarilyDisconnectWifi) { 9582 // Drop a third party reconnect/reassociate if STA is 9583 // temporarily disconnected for p2p 9584 break; 9585 } else { 9586 // ConnectModeState handles it 9587 ret = NOT_HANDLED; 9588 } 9589 break; 9590 case CMD_SCREEN_STATE_CHANGED: 9591 handleScreenStateChanged(message.arg1 != 0); 9592 break; 9593 case WifiMonitor.RSN_PMKID_MISMATCH_EVENT: 9594 //WAR: In release M, there is a TLS bugs for some radius. M upgrade the TLS to 9595 // 1.2. However,some old radius can not support it. So if possibly disconnected 9596 // due to TLS failure, we will toggler the TLS version between 1.1 and 1.2 for 9597 // next retry connection 9598 int nid = mCurrentAssociateNetworkId; 9599 WifiConfiguration currentNet = mWifiConfigStore.getWifiConfiguration(nid); 9600 if (currentNet != null && currentNet.enterpriseConfig != null) { 9601 currentNet.enterpriseConfig.setTls12Enable( 9602 !currentNet.enterpriseConfig.getTls12Enable()); 9603 mWifiConfigStore.saveNetwork(currentNet, WifiConfiguration.UNKNOWN_UID); 9604 Log.e(TAG, "NetWork ID =" + nid + " switch to TLS1.2: " + 9605 currentNet.enterpriseConfig.getTls12Enable()); 9606 } 9607 9608 break; 9609 default: 9610 ret = NOT_HANDLED; 9611 } 9612 return ret; 9613 } 9614 9615 @Override 9616 public void exit() { 9617 mDisconnectedPnoAlarmCount = 0; 9618 /* No need for a background scan upon exit from a disconnected state */ 9619 enableBackgroundScan(false); 9620 setScanAlarm(false); 9621 mAlarmManager.cancel(mPnoIntent); 9622 } 9623 } 9624 9625 class WpsRunningState extends State { 9626 // Tracks the source to provide a reply 9627 private Message mSourceMessage; 9628 @Override 9629 public void enter() { 9630 mSourceMessage = Message.obtain(getCurrentMessage()); 9631 } 9632 @Override 9633 public boolean processMessage(Message message) { 9634 logStateAndMessage(message, this); 9635 9636 switch (message.what) { 9637 case WifiMonitor.WPS_SUCCESS_EVENT: 9638 // Ignore intermediate success, wait for full connection 9639 break; 9640 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9641 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9642 mSourceMessage.recycle(); 9643 mSourceMessage = null; 9644 deferMessage(message); 9645 transitionTo(mDisconnectedState); 9646 break; 9647 case WifiMonitor.WPS_OVERLAP_EVENT: 9648 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9649 WifiManager.WPS_OVERLAP_ERROR); 9650 mSourceMessage.recycle(); 9651 mSourceMessage = null; 9652 transitionTo(mDisconnectedState); 9653 break; 9654 case WifiMonitor.WPS_FAIL_EVENT: 9655 // Arg1 has the reason for the failure 9656 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9657 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9658 mSourceMessage.recycle(); 9659 mSourceMessage = null; 9660 transitionTo(mDisconnectedState); 9661 } else { 9662 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9663 } 9664 break; 9665 case WifiMonitor.WPS_TIMEOUT_EVENT: 9666 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9667 WifiManager.WPS_TIMED_OUT); 9668 mSourceMessage.recycle(); 9669 mSourceMessage = null; 9670 transitionTo(mDisconnectedState); 9671 break; 9672 case WifiManager.START_WPS: 9673 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9674 break; 9675 case WifiManager.CANCEL_WPS: 9676 if (mWifiNative.cancelWps()) { 9677 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9678 } else { 9679 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9680 } 9681 transitionTo(mDisconnectedState); 9682 break; 9683 /** 9684 * Defer all commands that can cause connections to a different network 9685 * or put the state machine out of connect mode 9686 */ 9687 case CMD_STOP_DRIVER: 9688 case CMD_SET_OPERATIONAL_MODE: 9689 case WifiManager.CONNECT_NETWORK: 9690 case CMD_ENABLE_NETWORK: 9691 case CMD_RECONNECT: 9692 case CMD_REASSOCIATE: 9693 case CMD_ENABLE_ALL_NETWORKS: 9694 deferMessage(message); 9695 break; 9696 case CMD_AUTO_CONNECT: 9697 case CMD_AUTO_ROAM: 9698 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9699 return HANDLED; 9700 case CMD_START_SCAN: 9701 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9702 return HANDLED; 9703 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9704 if (DBG) log("Network connection lost"); 9705 handleNetworkDisconnect(); 9706 break; 9707 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9708 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9709 break; 9710 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9711 // Disregard auth failure events during WPS connection. The 9712 // EAP sequence is retried several times, and there might be 9713 // failures (especially for wps pin). We will get a WPS_XXX 9714 // event at the end of the sequence anyway. 9715 if (DBG) log("Ignore auth failure during WPS connection"); 9716 break; 9717 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9718 // Throw away supplicant state changes when WPS is running. 9719 // We will start getting supplicant state changes once we get 9720 // a WPS success or failure 9721 break; 9722 default: 9723 return NOT_HANDLED; 9724 } 9725 return HANDLED; 9726 } 9727 9728 @Override 9729 public void exit() { 9730 mWifiConfigStore.enableAllNetworks(); 9731 mWifiConfigStore.loadConfiguredNetworks(); 9732 } 9733 } 9734 9735 class SoftApStartingState extends State { 9736 @Override 9737 public void enter() { 9738 final Message message = getCurrentMessage(); 9739 if (message.what == CMD_START_AP) { 9740 final WifiConfiguration config = (WifiConfiguration) message.obj; 9741 9742 if (config == null) { 9743 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9744 } else { 9745 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9746 startSoftApWithConfig(config); 9747 } 9748 } else { 9749 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9750 } 9751 } 9752 @Override 9753 public boolean processMessage(Message message) { 9754 logStateAndMessage(message, this); 9755 9756 switch(message.what) { 9757 case CMD_START_SUPPLICANT: 9758 case CMD_STOP_SUPPLICANT: 9759 case CMD_START_AP: 9760 case CMD_STOP_AP: 9761 case CMD_START_DRIVER: 9762 case CMD_STOP_DRIVER: 9763 case CMD_SET_OPERATIONAL_MODE: 9764 case CMD_SET_COUNTRY_CODE: 9765 case CMD_SET_FREQUENCY_BAND: 9766 case CMD_START_PACKET_FILTERING: 9767 case CMD_STOP_PACKET_FILTERING: 9768 case CMD_TETHER_STATE_CHANGE: 9769 deferMessage(message); 9770 break; 9771 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9772 WifiConfiguration config = (WifiConfiguration) message.obj; 9773 if (config != null) { 9774 startSoftApWithConfig(config); 9775 } else { 9776 loge("Softap config is null!"); 9777 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9778 } 9779 break; 9780 case CMD_START_AP_SUCCESS: 9781 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9782 transitionTo(mSoftApStartedState); 9783 break; 9784 case CMD_START_AP_FAILURE: 9785 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9786 transitionTo(mInitialState); 9787 break; 9788 default: 9789 return NOT_HANDLED; 9790 } 9791 return HANDLED; 9792 } 9793 } 9794 9795 class SoftApStartedState extends State { 9796 @Override 9797 public boolean processMessage(Message message) { 9798 logStateAndMessage(message, this); 9799 9800 switch(message.what) { 9801 case CMD_STOP_AP: 9802 if (DBG) log("Stopping Soft AP"); 9803 /* We have not tethered at this point, so we just shutdown soft Ap */ 9804 try { 9805 mNwService.stopAccessPoint(mInterfaceName); 9806 } catch(Exception e) { 9807 loge("Exception in stopAccessPoint()"); 9808 } 9809 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9810 transitionTo(mInitialState); 9811 break; 9812 case CMD_START_AP: 9813 // Ignore a start on a running access point 9814 break; 9815 // Fail client mode operation when soft AP is enabled 9816 case CMD_START_SUPPLICANT: 9817 loge("Cannot start supplicant with a running soft AP"); 9818 setWifiState(WIFI_STATE_UNKNOWN); 9819 break; 9820 case CMD_TETHER_STATE_CHANGE: 9821 TetherStateChange stateChange = (TetherStateChange) message.obj; 9822 if (startTethering(stateChange.available)) { 9823 transitionTo(mTetheringState); 9824 } 9825 break; 9826 default: 9827 return NOT_HANDLED; 9828 } 9829 return HANDLED; 9830 } 9831 } 9832 9833 class TetheringState extends State { 9834 @Override 9835 public void enter() { 9836 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9837 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9838 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9839 } 9840 @Override 9841 public boolean processMessage(Message message) { 9842 logStateAndMessage(message, this); 9843 9844 switch(message.what) { 9845 case CMD_TETHER_STATE_CHANGE: 9846 TetherStateChange stateChange = (TetherStateChange) message.obj; 9847 if (isWifiTethered(stateChange.active)) { 9848 transitionTo(mTetheredState); 9849 } 9850 return HANDLED; 9851 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9852 if (message.arg1 == mTetherToken) { 9853 loge("Failed to get tether update, shutdown soft access point"); 9854 transitionTo(mSoftApStartedState); 9855 // Needs to be first thing handled 9856 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9857 } 9858 break; 9859 case CMD_START_SUPPLICANT: 9860 case CMD_STOP_SUPPLICANT: 9861 case CMD_START_AP: 9862 case CMD_STOP_AP: 9863 case CMD_START_DRIVER: 9864 case CMD_STOP_DRIVER: 9865 case CMD_SET_OPERATIONAL_MODE: 9866 case CMD_SET_COUNTRY_CODE: 9867 case CMD_SET_FREQUENCY_BAND: 9868 case CMD_START_PACKET_FILTERING: 9869 case CMD_STOP_PACKET_FILTERING: 9870 deferMessage(message); 9871 break; 9872 default: 9873 return NOT_HANDLED; 9874 } 9875 return HANDLED; 9876 } 9877 } 9878 9879 class TetheredState extends State { 9880 @Override 9881 public boolean processMessage(Message message) { 9882 logStateAndMessage(message, this); 9883 9884 switch(message.what) { 9885 case CMD_TETHER_STATE_CHANGE: 9886 TetherStateChange stateChange = (TetherStateChange) message.obj; 9887 if (!isWifiTethered(stateChange.active)) { 9888 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9889 setHostApRunning(null, false); 9890 setHostApRunning(null, true); 9891 } 9892 return HANDLED; 9893 case CMD_STOP_AP: 9894 if (DBG) log("Untethering before stopping AP"); 9895 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9896 stopTethering(); 9897 transitionTo(mUntetheringState); 9898 // More work to do after untethering 9899 deferMessage(message); 9900 break; 9901 default: 9902 return NOT_HANDLED; 9903 } 9904 return HANDLED; 9905 } 9906 } 9907 9908 class UntetheringState extends State { 9909 @Override 9910 public void enter() { 9911 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9912 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9913 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9914 9915 } 9916 @Override 9917 public boolean processMessage(Message message) { 9918 logStateAndMessage(message, this); 9919 9920 switch(message.what) { 9921 case CMD_TETHER_STATE_CHANGE: 9922 TetherStateChange stateChange = (TetherStateChange) message.obj; 9923 9924 /* Wait till wifi is untethered */ 9925 if (isWifiTethered(stateChange.active)) break; 9926 9927 transitionTo(mSoftApStartedState); 9928 break; 9929 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9930 if (message.arg1 == mTetherToken) { 9931 loge("Failed to get tether update, force stop access point"); 9932 transitionTo(mSoftApStartedState); 9933 } 9934 break; 9935 case CMD_START_SUPPLICANT: 9936 case CMD_STOP_SUPPLICANT: 9937 case CMD_START_AP: 9938 case CMD_STOP_AP: 9939 case CMD_START_DRIVER: 9940 case CMD_STOP_DRIVER: 9941 case CMD_SET_OPERATIONAL_MODE: 9942 case CMD_SET_COUNTRY_CODE: 9943 case CMD_SET_FREQUENCY_BAND: 9944 case CMD_START_PACKET_FILTERING: 9945 case CMD_STOP_PACKET_FILTERING: 9946 deferMessage(message); 9947 break; 9948 default: 9949 return NOT_HANDLED; 9950 } 9951 return HANDLED; 9952 } 9953 } 9954 9955 /** 9956 * State machine initiated requests can have replyTo set to null indicating 9957 * there are no recepients, we ignore those reply actions. 9958 */ 9959 private void replyToMessage(Message msg, int what) { 9960 if (msg.replyTo == null) return; 9961 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9962 mReplyChannel.replyToMessage(msg, dstMsg); 9963 } 9964 9965 private void replyToMessage(Message msg, int what, int arg1) { 9966 if (msg.replyTo == null) return; 9967 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9968 dstMsg.arg1 = arg1; 9969 mReplyChannel.replyToMessage(msg, dstMsg); 9970 } 9971 9972 private void replyToMessage(Message msg, int what, Object obj) { 9973 if (msg.replyTo == null) return; 9974 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9975 dstMsg.obj = obj; 9976 mReplyChannel.replyToMessage(msg, dstMsg); 9977 } 9978 9979 /** 9980 * arg2 on the source message has a unique id that needs to be retained in replies 9981 * to match the request 9982 * <p>see WifiManager for details 9983 */ 9984 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9985 Message msg = Message.obtain(); 9986 msg.what = what; 9987 msg.arg2 = srcMsg.arg2; 9988 return msg; 9989 } 9990 9991 /** 9992 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9993 * @param msg Must have a WifiConfiguration obj to succeed 9994 */ 9995 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9996 WifiConfiguration config) { 9997 if (config != null && config.preSharedKey != null) { 9998 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9999 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 10000 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 10001 wifiCredentialEventType); 10002 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 10003 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 10004 } 10005 } 10006 10007 private static int parseHex(char ch) { 10008 if ('0' <= ch && ch <= '9') { 10009 return ch - '0'; 10010 } else if ('a' <= ch && ch <= 'f') { 10011 return ch - 'a' + 10; 10012 } else if ('A' <= ch && ch <= 'F') { 10013 return ch - 'A' + 10; 10014 } else { 10015 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 10016 } 10017 } 10018 10019 private byte[] parseHex(String hex) { 10020 /* This only works for good input; don't throw bad data at it */ 10021 if (hex == null) { 10022 return new byte[0]; 10023 } 10024 10025 if (hex.length() % 2 != 0) { 10026 throw new NumberFormatException(hex + " is not a valid hex string"); 10027 } 10028 10029 byte[] result = new byte[(hex.length())/2 + 1]; 10030 result[0] = (byte) ((hex.length())/2); 10031 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 10032 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 10033 byte b = (byte) (val & 0xFF); 10034 result[j] = b; 10035 } 10036 10037 return result; 10038 } 10039 10040 private static String makeHex(byte[] bytes) { 10041 StringBuilder sb = new StringBuilder(); 10042 for (byte b : bytes) { 10043 sb.append(String.format("%02x", b)); 10044 } 10045 return sb.toString(); 10046 } 10047 10048 private static String makeHex(byte[] bytes, int from, int len) { 10049 StringBuilder sb = new StringBuilder(); 10050 for (int i = 0; i < len; i++) { 10051 sb.append(String.format("%02x", bytes[from+i])); 10052 } 10053 return sb.toString(); 10054 } 10055 10056 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 10057 10058 int len = array1.length + array2.length + array3.length; 10059 10060 if (array1.length != 0) { 10061 len++; /* add another byte for size */ 10062 } 10063 10064 if (array2.length != 0) { 10065 len++; /* add another byte for size */ 10066 } 10067 10068 if (array3.length != 0) { 10069 len++; /* add another byte for size */ 10070 } 10071 10072 byte[] result = new byte[len]; 10073 10074 int index = 0; 10075 if (array1.length != 0) { 10076 result[index] = (byte) (array1.length & 0xFF); 10077 index++; 10078 for (byte b : array1) { 10079 result[index] = b; 10080 index++; 10081 } 10082 } 10083 10084 if (array2.length != 0) { 10085 result[index] = (byte) (array2.length & 0xFF); 10086 index++; 10087 for (byte b : array2) { 10088 result[index] = b; 10089 index++; 10090 } 10091 } 10092 10093 if (array3.length != 0) { 10094 result[index] = (byte) (array3.length & 0xFF); 10095 index++; 10096 for (byte b : array3) { 10097 result[index] = b; 10098 index++; 10099 } 10100 } 10101 return result; 10102 } 10103 10104 private static byte[] concatHex(byte[] array1, byte[] array2) { 10105 10106 int len = array1.length + array2.length; 10107 10108 byte[] result = new byte[len]; 10109 10110 int index = 0; 10111 if (array1.length != 0) { 10112 for (byte b : array1) { 10113 result[index] = b; 10114 index++; 10115 } 10116 } 10117 10118 if (array2.length != 0) { 10119 for (byte b : array2) { 10120 result[index] = b; 10121 index++; 10122 } 10123 } 10124 10125 return result; 10126 } 10127 10128 void handleGsmAuthRequest(SimAuthRequestData requestData) { 10129 if (targetWificonfiguration == null 10130 || targetWificonfiguration.networkId == requestData.networkId) { 10131 logd("id matches targetWifiConfiguration"); 10132 } else { 10133 logd("id does not match targetWifiConfiguration"); 10134 return; 10135 } 10136 10137 TelephonyManager tm = (TelephonyManager) 10138 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10139 10140 if (tm != null) { 10141 StringBuilder sb = new StringBuilder(); 10142 for (String challenge : requestData.data) { 10143 10144 if (challenge == null || challenge.isEmpty()) 10145 continue; 10146 logd("RAND = " + challenge); 10147 10148 byte[] rand = null; 10149 try { 10150 rand = parseHex(challenge); 10151 } catch (NumberFormatException e) { 10152 loge("malformed challenge"); 10153 continue; 10154 } 10155 10156 String base64Challenge = android.util.Base64.encodeToString( 10157 rand, android.util.Base64.NO_WRAP); 10158 /* 10159 * First, try with appType = 2 => USIM according to 10160 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 10161 */ 10162 int appType = 2; 10163 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10164 if (tmResponse == null) { 10165 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 10166 * appType = 1 => SIM 10167 */ 10168 appType = 1; 10169 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10170 } 10171 logv("Raw Response - " + tmResponse); 10172 10173 if (tmResponse != null && tmResponse.length() > 4) { 10174 byte[] result = android.util.Base64.decode(tmResponse, 10175 android.util.Base64.DEFAULT); 10176 logv("Hex Response -" + makeHex(result)); 10177 int sres_len = result[0]; 10178 String sres = makeHex(result, 1, sres_len); 10179 int kc_offset = 1+sres_len; 10180 int kc_len = result[kc_offset]; 10181 String kc = makeHex(result, 1+kc_offset, kc_len); 10182 sb.append(":" + kc + ":" + sres); 10183 logv("kc:" + kc + " sres:" + sres); 10184 10185 String response = sb.toString(); 10186 logv("Supplicant Response -" + response); 10187 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 10188 } else { 10189 loge("bad response - " + tmResponse); 10190 mWifiNative.simAuthFailedResponse(requestData.networkId); 10191 } 10192 } 10193 10194 } else { 10195 loge("could not get telephony manager"); 10196 mWifiNative.simAuthFailedResponse(requestData.networkId); 10197 } 10198 } 10199 10200 void handle3GAuthRequest(SimAuthRequestData requestData) { 10201 StringBuilder sb = new StringBuilder(); 10202 byte[] rand = null; 10203 byte[] authn = null; 10204 String res_type = "UMTS-AUTH"; 10205 10206 if (targetWificonfiguration == null 10207 || targetWificonfiguration.networkId == requestData.networkId) { 10208 logd("id matches targetWifiConfiguration"); 10209 } else { 10210 logd("id does not match targetWifiConfiguration"); 10211 return; 10212 } 10213 if (requestData.data.length == 2) { 10214 try { 10215 rand = parseHex(requestData.data[0]); 10216 authn = parseHex(requestData.data[1]); 10217 } catch (NumberFormatException e) { 10218 loge("malformed challenge"); 10219 } 10220 } else { 10221 loge("malformed challenge"); 10222 } 10223 10224 String tmResponse = ""; 10225 if (rand != null && authn != null) { 10226 String base64Challenge = android.util.Base64.encodeToString( 10227 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10228 10229 TelephonyManager tm = (TelephonyManager) 10230 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10231 if (tm != null) { 10232 int appType = 2; // 2 => USIM 10233 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10234 logv("Raw Response - " + tmResponse); 10235 } else { 10236 loge("could not get telephony manager"); 10237 } 10238 } 10239 10240 boolean good_response = false; 10241 if (tmResponse != null && tmResponse.length() > 4) { 10242 byte[] result = android.util.Base64.decode(tmResponse, 10243 android.util.Base64.DEFAULT); 10244 loge("Hex Response - " + makeHex(result)); 10245 byte tag = result[0]; 10246 if (tag == (byte) 0xdb) { 10247 logv("successful 3G authentication "); 10248 int res_len = result[1]; 10249 String res = makeHex(result, 2, res_len); 10250 int ck_len = result[res_len + 2]; 10251 String ck = makeHex(result, res_len + 3, ck_len); 10252 int ik_len = result[res_len + ck_len + 3]; 10253 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10254 sb.append(":" + ik + ":" + ck + ":" + res); 10255 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10256 good_response = true; 10257 } else if (tag == (byte) 0xdc) { 10258 loge("synchronisation failure"); 10259 int auts_len = result[1]; 10260 String auts = makeHex(result, 2, auts_len); 10261 res_type = "UMTS-AUTS"; 10262 sb.append(":" + auts); 10263 logv("auts:" + auts); 10264 good_response = true; 10265 } else { 10266 loge("bad response - unknown tag = " + tag); 10267 } 10268 } else { 10269 loge("bad response - " + tmResponse); 10270 } 10271 10272 if (good_response) { 10273 String response = sb.toString(); 10274 if (VDBG) logv("Supplicant Response -" + response); 10275 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10276 } else { 10277 mWifiNative.umtsAuthFailedResponse(requestData.networkId); 10278 } 10279 } 10280 10281 /** 10282 * @param reason reason code from supplicant on network disconnected event 10283 * @return true if this is a suspicious disconnect 10284 */ 10285 static boolean unexpectedDisconnectedReason(int reason) { 10286 return reason == 2 // PREV_AUTH_NOT_VALID 10287 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10288 || reason == 7 // FRAME_FROM_NONASSOC_STA 10289 || reason == 8 // STA_HAS_LEFT 10290 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10291 || reason == 14 // MICHAEL_MIC_FAILURE 10292 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10293 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10294 || reason == 18 // GROUP_CIPHER_NOT_VALID 10295 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10296 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10297 || reason == 34; // DISASSOC_LOW_ACK 10298 } 10299} 10300