WifiStateMachine.java revision f0dacfe3c7f894166e87c8a90ef0a645cebc8996
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.AlertDialog; 38import android.app.PendingIntent; 39import android.app.backup.IBackupManager; 40import android.bluetooth.BluetoothAdapter; 41import android.content.BroadcastReceiver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.IPackageManager; 47import android.content.pm.PackageManager; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.DhcpResults; 51import android.net.BaseDhcpStateMachine; 52import android.net.DhcpStateMachine; 53import android.net.Network; 54import android.net.dhcp.DhcpClient; 55import android.net.InterfaceConfiguration; 56import android.net.IpReachabilityMonitor; 57import android.net.LinkAddress; 58import android.net.LinkProperties; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkFactory; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkRequest; 65import android.net.NetworkUtils; 66import android.net.RouteInfo; 67import android.net.StaticIpConfiguration; 68import android.net.TrafficStats; 69import android.net.wifi.RssiPacketCountInfo; 70import android.net.wifi.ScanResult; 71import android.net.wifi.ScanSettings; 72import android.net.wifi.SupplicantState; 73import android.net.wifi.WifiChannel; 74import android.net.wifi.WifiConfiguration; 75import android.net.wifi.WifiConnectionStatistics; 76import android.net.wifi.WifiEnterpriseConfig; 77import android.net.wifi.WifiInfo; 78import android.net.wifi.WifiLinkLayerStats; 79import android.net.wifi.WifiManager; 80import android.net.wifi.WifiScanner; 81import android.net.wifi.WifiSsid; 82import android.net.wifi.WpsInfo; 83import android.net.wifi.WpsResult; 84import android.net.wifi.WpsResult.Status; 85import android.net.wifi.p2p.IWifiP2pManager; 86import android.os.BatteryStats; 87import android.os.Binder; 88import android.os.Bundle; 89import android.os.IBinder; 90import android.os.INetworkManagementService; 91import android.os.Looper; 92import android.os.Message; 93import android.os.Messenger; 94import android.os.PowerManager; 95import android.os.Process; 96import android.os.RemoteException; 97import android.os.ServiceManager; 98import android.os.SystemClock; 99import android.os.SystemProperties; 100import android.os.UserHandle; 101import android.os.WorkSource; 102import android.provider.Settings; 103import android.telephony.TelephonyManager; 104import android.text.TextUtils; 105import android.util.Log; 106import android.util.LruCache; 107 108import com.android.internal.R; 109import com.android.internal.app.IBatteryStats; 110import com.android.internal.util.AsyncChannel; 111import com.android.internal.util.Protocol; 112import com.android.internal.util.State; 113import com.android.internal.util.StateMachine; 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.Calendar; 130import java.util.HashSet; 131import java.util.LinkedList; 132import java.util.List; 133import java.util.Locale; 134import java.util.Queue; 135import java.util.Random; 136import java.util.concurrent.atomic.AtomicBoolean; 137import java.util.concurrent.atomic.AtomicInteger; 138import java.util.regex.Pattern; 139 140/** 141 * Track the state of Wifi connectivity. All event handling is done here, 142 * and all changes in connectivity state are initiated here. 143 * 144 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 145 * In the current implementation, we support concurrent wifi p2p and wifi operation. 146 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 147 * handles p2p operation. 148 * 149 * @hide 150 */ 151public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler { 152 153 private static final String NETWORKTYPE = "WIFI"; 154 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 155 private static boolean DBG = false; 156 private static boolean VDBG = false; 157 private static boolean VVDBG = false; 158 private static boolean USE_PAUSE_SCANS = false; 159 private static boolean mLogMessages = false; 160 private static final String TAG = "WifiStateMachine"; 161 162 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 163 164 private static final String GOOGLE_OUI = "DA-A1-19"; 165 166 /* temporary debug flag - best network selection development */ 167 private static boolean PDBG = false; 168 169 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 170 * the corresponding BSSID. 171 */ 172 private boolean didBlackListBSSID = false; 173 174 /** 175 * Log with error attribute 176 * 177 * @param s is string log 178 */ 179 protected void loge(String s) { 180 Log.e(getName(), s); 181 } 182 protected void logd(String s) { 183 Log.d(getName(), s); 184 } 185 protected void log(String s) {; 186 Log.d(getName(), s); 187 } 188 189 private WifiMonitor mWifiMonitor; 190 private WifiNative mWifiNative; 191 private WifiConfigStore mWifiConfigStore; 192 private WifiAutoJoinController mWifiAutoJoinController; 193 private INetworkManagementService mNwService; 194 private ConnectivityManager mCm; 195 private WifiLogger mWifiLogger; 196 197 private final boolean mP2pSupported; 198 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 199 private boolean mTemporarilyDisconnectWifi = false; 200 private final String mPrimaryDeviceType; 201 202 /* Scan results handling */ 203 private List<ScanDetail> mScanResults = new ArrayList<>(); 204 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 205 private static final int SCAN_RESULT_CACHE_SIZE = 160; 206 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 207 // For debug, number of known scan results that were found as part of last scan result event, 208 // as well the number of scans results returned by the supplicant with that message 209 private int mNumScanResultsKnown; 210 private int mNumScanResultsReturned; 211 212 private boolean mScreenOn = false; 213 214 /* Chipset supports background scan */ 215 private final boolean mBackgroundScanSupported; 216 217 private final String mInterfaceName; 218 /* Tethering interface could be separate from wlan interface */ 219 private String mTetherInterfaceName; 220 221 private int mLastSignalLevel = -1; 222 private String mLastBssid; 223 private int mLastNetworkId; // The network Id we successfully joined 224 private boolean linkDebouncing = false; 225 226 private boolean mHalBasedPnoDriverSupported = false; 227 228 // Below booleans are configurations coming from the Developper Settings 229 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 230 private boolean mHalBasedPnoEnableInDevSettings = false; 231 232 233 private int mHalFeatureSet = 0; 234 private static int mPnoResultFound = 0; 235 236 @Override 237 public void onPnoNetworkFound(ScanResult results[]) { 238 if (DBG) { 239 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 240 for (int i = 0; i < results.length; i++) { 241 Log.e(TAG, results[i].toString()); 242 } 243 } 244 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 245 } 246 247 public void processPnoNetworkFound(ScanResult results[]) { 248 ScanSettings settings = new ScanSettings(); 249 settings.channelSet = new ArrayList<WifiChannel>(); 250 StringBuilder sb = new StringBuilder(); 251 sb.append(""); 252 for (int i=0; i<results.length; i++) { 253 WifiChannel channel = new WifiChannel(); 254 channel.freqMHz = results[i].frequency; 255 settings.channelSet.add(channel); 256 sb.append(results[i].SSID).append(" "); 257 } 258 259 stopPnoOffload(); 260 261 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 262 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 263 mPnoResultFound ++; 264 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 265 int delay = 30 * 1000; 266 // reconfigure Pno after 1 minutes if we're still in disconnected state 267 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 268 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 269 (long)delay); 270 mRestartAutoJoinOffloadCounter++; 271 } 272 273 // Testing various network disconnect cases by sending lots of spurious 274 // disconnect to supplicant 275 private boolean testNetworkDisconnect = false; 276 277 private boolean mEnableRssiPolling = false; 278 private boolean mLegacyPnoEnabled = false; 279 private int mRssiPollToken = 0; 280 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 281 * In CONNECT_MODE, the STA can scan and connect to an access point 282 * In SCAN_ONLY_MODE, the STA can only scan for access points 283 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 284 */ 285 private int mOperationalMode = CONNECT_MODE; 286 private boolean mIsScanOngoing = false; 287 private boolean mIsFullScanOngoing = false; 288 private boolean mSendScanResultsBroadcast = false; 289 290 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 291 private WorkSource mScanWorkSource = null; 292 private static final int UNKNOWN_SCAN_SOURCE = -1; 293 private static final int SCAN_ALARM_SOURCE = -2; 294 private static final int ADD_OR_UPDATE_SOURCE = -3; 295 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 296 private static final int ENABLE_WIFI = -5; 297 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 298 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 299 300 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 301 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 302 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 303 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 304 305 /* Tracks if state machine has received any screen state change broadcast yet. 306 * We can miss one of these at boot. 307 */ 308 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 309 310 private boolean mBluetoothConnectionActive = false; 311 312 private PowerManager.WakeLock mSuspendWakeLock; 313 314 /** 315 * Interval in milliseconds between polling for RSSI 316 * and linkspeed information 317 */ 318 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 319 320 /** 321 * Interval in milliseconds between receiving a disconnect event 322 * while connected to a good AP, and handling the disconnect proper 323 */ 324 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 325 326 /** 327 * Delay between supplicant restarts upon failure to establish connection 328 */ 329 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 330 331 /** 332 * Number of times we attempt to restart supplicant 333 */ 334 private static final int SUPPLICANT_RESTART_TRIES = 5; 335 336 private int mSupplicantRestartCount = 0; 337 /* Tracks sequence number on stop failure message */ 338 private int mSupplicantStopFailureToken = 0; 339 340 /** 341 * Tether state change notification time out 342 */ 343 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 344 345 /* Tracks sequence number on a tether notification time out */ 346 private int mTetherToken = 0; 347 348 /** 349 * Driver start time out. 350 */ 351 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 352 353 /* Tracks sequence number on a driver time out */ 354 private int mDriverStartToken = 0; 355 356 /** 357 * The link properties of the wifi interface. 358 * Do not modify this directly; use updateLinkProperties instead. 359 */ 360 private LinkProperties mLinkProperties; 361 362 /* Tracks sequence number on a periodic scan message */ 363 private int mPeriodicScanToken = 0; 364 365 // Wakelock held during wifi start/stop and driver load/unload 366 private PowerManager.WakeLock mWakeLock; 367 368 private Context mContext; 369 370 private final Object mDhcpResultsLock = new Object(); 371 private DhcpResults mDhcpResults; 372 373 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 374 private WifiInfo mWifiInfo; 375 private NetworkInfo mNetworkInfo; 376 private NetworkCapabilities mNetworkCapabilities; 377 private SupplicantStateTracker mSupplicantStateTracker; 378 private BaseDhcpStateMachine mDhcpStateMachine; 379 private boolean mDhcpActive = false; 380 381 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 382 383 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 384 385 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 386 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 387 388 // Roaming failure count 389 private int mRoamFailCount = 0; 390 391 // This is the BSSID we are trying to associate to, it can be set to "any" 392 // if we havent selected a BSSID for joining. 393 // if we havent selected a BSSID for joining. 394 // The BSSID we are associated to is found in mWifiInfo 395 private String mTargetRoamBSSID = "any"; 396 397 private long mLastDriverRoamAttempt = 0; 398 399 private WifiConfiguration targetWificonfiguration = null; 400 401 // Used as debug to indicate which configuration last was saved 402 private WifiConfiguration lastSavedConfigurationAttempt = null; 403 404 // Used as debug to indicate which configuration last was removed 405 private WifiConfiguration lastForgetConfigurationAttempt = null; 406 407 //Random used by softAP channel Selection 408 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 409 410 boolean isRoaming() { 411 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 412 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 413 } 414 415 public void autoRoamSetBSSID(int netId, String bssid) { 416 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 417 } 418 419 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 420 boolean ret = true; 421 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 422 if (bssid == null) bssid = "any"; 423 if (config == null) return false; // Nothing to do 424 425 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 426 return false; // We didnt change anything 427 } 428 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 429 // Changing to ANY 430 if (!mWifiConfigStore.roamOnAny) { 431 ret = false; // Nothing to do 432 } 433 } 434 if (VDBG) { 435 loge("autoRoamSetBSSID " + bssid 436 + " key=" + config.configKey()); 437 } 438 config.autoJoinBSSID = bssid; 439 mTargetRoamBSSID = bssid; 440 mWifiConfigStore.saveWifiConfigBSSID(config); 441 return ret; 442 } 443 444 /** 445 * Save the UID correctly depending on if this is a new or existing network. 446 * @return true if operation is authorized, false otherwise 447 */ 448 boolean recordUidIfAuthorized(WifiConfiguration config, int uid) { 449 if (!mWifiConfigStore.isNetworkConfigured(config)) { 450 config.creatorUid = uid; 451 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 452 } else if (!mWifiConfigStore.canModifyNetwork(uid, config)) { 453 return false; 454 } 455 456 config.lastUpdateUid = uid; 457 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 458 459 return true; 460 461 } 462 463 /** 464 * Checks to see if user has specified if the apps configuration is connectable. 465 * If the user hasn't specified we query the user and return true. 466 * 467 * @param message The message to be deferred 468 * @param netId Network id of the configuration to check against 469 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 470 * CONFIG_OVERRIDE_PERMISSION 471 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 472 */ 473 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 474 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 475 476 // We can only evaluate saved configurations. 477 if (config == null) { 478 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 479 return true; 480 } 481 482 switch (config.userApproved) { 483 case WifiConfiguration.USER_APPROVED: 484 case WifiConfiguration.USER_BANNED: 485 return false; 486 case WifiConfiguration.USER_PENDING: 487 default: // USER_UNSPECIFIED 488 /* the intention was to ask user here; but a dialog box is * 489 * too invasive; so we are going to allow connection for now */ 490 config.userApproved = WifiConfiguration.USER_APPROVED; 491 return false; 492 } 493 } 494 495 /** 496 * Subset of link properties coming from netlink. 497 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 498 * and domains obtained from router advertisements (RFC 6106). 499 */ 500 private NetlinkTracker mNetlinkTracker; 501 502 private IpReachabilityMonitor mIpReachabilityMonitor; 503 504 private AlarmManager mAlarmManager; 505 private PendingIntent mScanIntent; 506 private PendingIntent mDriverStopIntent; 507 508 /* Tracks current frequency mode */ 509 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 510 511 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 512 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 513 514 // Channel for sending replies. 515 private AsyncChannel mReplyChannel = new AsyncChannel(); 516 517 private WifiP2pServiceImpl mWifiP2pServiceImpl; 518 519 // Used to initiate a connection with WifiP2pService 520 private AsyncChannel mWifiP2pChannel; 521 private AsyncChannel mWifiApConfigChannel; 522 523 private WifiScanner mWifiScanner; 524 525 private int mConnectionRequests = 0; 526 private WifiNetworkFactory mNetworkFactory; 527 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 528 private WifiNetworkAgent mNetworkAgent; 529 530 private String[] mWhiteListedSsids = null; 531 532 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 533 // We should really persist that into the networkHistory.txt file, and read it back when 534 // WifiStateMachine starts up 535 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 536 537 // Used to filter out requests we couldn't possibly satisfy. 538 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 539 540 /* The base for wifi message types */ 541 static final int BASE = Protocol.BASE_WIFI; 542 /* Start the supplicant */ 543 static final int CMD_START_SUPPLICANT = BASE + 11; 544 /* Stop the supplicant */ 545 static final int CMD_STOP_SUPPLICANT = BASE + 12; 546 /* Start the driver */ 547 static final int CMD_START_DRIVER = BASE + 13; 548 /* Stop the driver */ 549 static final int CMD_STOP_DRIVER = BASE + 14; 550 /* Indicates Static IP succeeded */ 551 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 552 /* Indicates Static IP failed */ 553 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 554 /* Indicates supplicant stop failed */ 555 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 556 /* Delayed stop to avoid shutting down driver too quick*/ 557 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 558 /* A delayed message sent to start driver when it fail to come up */ 559 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 560 561 /* Start the soft access point */ 562 static final int CMD_START_AP = BASE + 21; 563 /* Indicates soft ap start succeeded */ 564 static final int CMD_START_AP_SUCCESS = BASE + 22; 565 /* Indicates soft ap start failed */ 566 static final int CMD_START_AP_FAILURE = BASE + 23; 567 /* Stop the soft access point */ 568 static final int CMD_STOP_AP = BASE + 24; 569 /* Set the soft access point configuration */ 570 static final int CMD_SET_AP_CONFIG = BASE + 25; 571 /* Soft access point configuration set completed */ 572 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 573 /* Request the soft access point configuration */ 574 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 575 /* Response to access point configuration request */ 576 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 577 /* Invoked when getting a tether state change notification */ 578 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 579 /* A delayed message sent to indicate tether state change failed to arrive */ 580 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 581 582 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 583 584 /* Supplicant commands */ 585 /* Is supplicant alive ? */ 586 static final int CMD_PING_SUPPLICANT = BASE + 51; 587 /* Add/update a network configuration */ 588 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 589 /* Delete a network */ 590 static final int CMD_REMOVE_NETWORK = BASE + 53; 591 /* Enable a network. The device will attempt a connection to the given network. */ 592 static final int CMD_ENABLE_NETWORK = BASE + 54; 593 /* Enable all networks */ 594 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 595 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 596 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 597 /* Clear the blacklist network list */ 598 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 599 /* Save configuration */ 600 static final int CMD_SAVE_CONFIG = BASE + 58; 601 /* Get configured networks */ 602 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 603 /* Get available frequencies */ 604 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 605 /* Get adaptors */ 606 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 607 /* Get configured networks with real preSharedKey */ 608 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 609 /* Get Link Layer Stats thru HAL */ 610 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 611 /* Supplicant commands after driver start*/ 612 /* Initiate a scan */ 613 static final int CMD_START_SCAN = BASE + 71; 614 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 615 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 616 /* Disconnect from a network */ 617 static final int CMD_DISCONNECT = BASE + 73; 618 /* Reconnect to a network */ 619 static final int CMD_RECONNECT = BASE + 74; 620 /* Reassociate to a network */ 621 static final int CMD_REASSOCIATE = BASE + 75; 622 /* Get Connection Statistis */ 623 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 624 625 /* Controls suspend mode optimizations 626 * 627 * When high perf mode is enabled, suspend mode optimizations are disabled 628 * 629 * When high perf mode is disabled, suspend mode optimizations are enabled 630 * 631 * Suspend mode optimizations include: 632 * - packet filtering 633 * - turn off roaming 634 * - DTIM wake up settings 635 */ 636 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 637 /* Set the country code */ 638 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 639 /* Enables RSSI poll */ 640 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 641 /* RSSI poll */ 642 static final int CMD_RSSI_POLL = BASE + 83; 643 /* Set up packet filtering */ 644 static final int CMD_START_PACKET_FILTERING = BASE + 84; 645 /* Clear packet filter */ 646 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 647 /* Enable suspend mode optimizations in the driver */ 648 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 649 /* Delayed NETWORK_DISCONNECT */ 650 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 651 /* When there are no saved networks, we do a periodic scan to notify user of 652 * an open network */ 653 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 654 /* Test network Disconnection NETWORK_DISCONNECT */ 655 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 656 657 private int testNetworkDisconnectCounter = 0; 658 659 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 660 static final int MULTICAST_V6 = 1; 661 static final int MULTICAST_V4 = 0; 662 663 /* Set the frequency band */ 664 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 665 /* Enable TDLS on a specific MAC address */ 666 static final int CMD_ENABLE_TDLS = BASE + 92; 667 /* DHCP/IP configuration watchdog */ 668 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 669 670 /** 671 * Watchdog for protecting against b/16823537 672 * Leave time for 4-way handshake to succeed 673 */ 674 static final int ROAM_GUARD_TIMER_MSEC = 15000; 675 676 int roamWatchdogCount = 0; 677 /* Roam state watchdog */ 678 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 679 /* Screen change intent handling */ 680 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 681 682 /* Disconnecting state watchdog */ 683 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 684 685 /* Remove a packages associated configrations */ 686 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 687 688 /* Disable an ephemeral network */ 689 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 690 691 /* Get matching network */ 692 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 693 694 /* alert from firmware */ 695 static final int CMD_FIRMWARE_ALERT = BASE + 100; 696 697 /** 698 * Make this timer 40 seconds, which is about the normal DHCP timeout. 699 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 700 * for more than 30 seconds. 701 */ 702 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 703 704 int obtainingIpWatchdogCount = 0; 705 706 /* Commands from/to the SupplicantStateTracker */ 707 /* Reset the supplicant state tracker */ 708 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 709 710 int disconnectingWatchdogCount = 0; 711 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 712 713 /* P2p commands */ 714 /* We are ok with no response here since we wont do much with it anyway */ 715 public static final int CMD_ENABLE_P2P = BASE + 131; 716 /* In order to shut down supplicant cleanly, we wait till p2p has 717 * been disabled */ 718 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 719 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 720 721 public static final int CMD_BOOT_COMPLETED = BASE + 134; 722 723 /* We now have a valid IP configuration. */ 724 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 725 /* We no longer have a valid IP configuration. */ 726 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 727 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 728 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 729 730 /* Supplicant is trying to associate to a given BSSID */ 731 static final int CMD_TARGET_BSSID = BASE + 141; 732 733 /* Reload all networks and reconnect */ 734 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 735 736 static final int CMD_AUTO_CONNECT = BASE + 143; 737 738 static final int network_status_unwanted_disconnect = 0; 739 static final int network_status_unwanted_disable_autojoin = 1; 740 741 static final int CMD_UNWANTED_NETWORK = BASE + 144; 742 743 static final int CMD_AUTO_ROAM = BASE + 145; 744 745 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 746 747 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 748 749 static final int CMD_NETWORK_STATUS = BASE + 148; 750 751 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 752 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 753 754 /* Remove a packages associated configrations */ 755 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 756 757 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 758 759 /* used to restart PNO when it was stopped due to association attempt */ 760 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 761 762 static int mRestartAutoJoinOffloadCounter = 0; 763 764 /* used to log if PNO was started */ 765 static final int CMD_STARTED_PNO_DBG = BASE + 155; 766 767 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 768 769 /* used to log if PNO was started */ 770 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 771 772 /* used to log if GSCAN was started */ 773 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 774 775 776 /* Wifi state machine modes of operation */ 777 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 778 public static final int CONNECT_MODE = 1; 779 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 780 public static final int SCAN_ONLY_MODE = 2; 781 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 782 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 783 784 private static final int SUCCESS = 1; 785 private static final int FAILURE = -1; 786 787 /* Tracks if suspend optimizations need to be disabled by DHCP, 788 * screen or due to high perf mode. 789 * When any of them needs to disable it, we keep the suspend optimizations 790 * disabled 791 */ 792 private int mSuspendOptNeedsDisabled = 0; 793 794 private static final int SUSPEND_DUE_TO_DHCP = 1; 795 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 796 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 797 798 /* Tracks if user has enabled suspend optimizations through settings */ 799 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 800 801 /** 802 * Default framework scan interval in milliseconds. This is used in the scenario in which 803 * wifi chipset does not support background scanning to set up a 804 * periodic wake up scan so that the device can connect to a new access 805 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 806 * override this. 807 */ 808 private final int mDefaultFrameworkScanIntervalMs; 809 810 811 /** 812 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 813 */ 814 private final int mNoNetworksPeriodicScan; 815 816 /** 817 * Supplicant scan interval in milliseconds. 818 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 819 * from the default config if the setting is not set 820 */ 821 private long mSupplicantScanIntervalMs; 822 823 /** 824 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 825 */ 826 private long lastFullBandConnectedTimeMilli; 827 828 /** 829 * time interval to the next full band scan we will perform for 830 * autojoin while connected with screen lit 831 */ 832 private long fullBandConnectedTimeIntervalMilli; 833 834 /** 835 * max time interval to the next full band scan we will perform for 836 * autojoin while connected with screen lit 837 * Max time is 5 minutes 838 */ 839 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 840 841 /** 842 * Minimum time interval between enabling all networks. 843 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 844 * due to enabling every time. We add a threshold to avoid this. 845 */ 846 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 847 private long mLastEnableAllNetworksTime; 848 849 int mRunningBeaconCount = 0; 850 851 /** 852 * Starting and shutting down driver too quick causes problems leading to driver 853 * being in a bad state. Delay driver stop. 854 */ 855 private final int mDriverStopDelayMs; 856 private int mDelayedStopCounter; 857 private boolean mInDelayedStop = false; 858 859 // there is a delay between StateMachine change country code and Supplicant change country code 860 // here save the current WifiStateMachine set country code 861 private volatile String mSetCountryCode = null; 862 863 // Supplicant doesn't like setting the same country code multiple times (it may drop 864 // currently connected network), so we save the current device set country code here to avoid 865 // redundency 866 private String mDriverSetCountryCode = null; 867 868 /* Default parent state */ 869 private State mDefaultState = new DefaultState(); 870 /* Temporary initial state */ 871 private State mInitialState = new InitialState(); 872 /* Driver loaded, waiting for supplicant to start */ 873 private State mSupplicantStartingState = new SupplicantStartingState(); 874 /* Driver loaded and supplicant ready */ 875 private State mSupplicantStartedState = new SupplicantStartedState(); 876 /* Waiting for supplicant to stop and monitor to exit */ 877 private State mSupplicantStoppingState = new SupplicantStoppingState(); 878 /* Driver start issued, waiting for completed event */ 879 private State mDriverStartingState = new DriverStartingState(); 880 /* Driver started */ 881 private State mDriverStartedState = new DriverStartedState(); 882 /* Wait until p2p is disabled 883 * This is a special state which is entered right after we exit out of DriverStartedState 884 * before transitioning to another state. 885 */ 886 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 887 /* Driver stopping */ 888 private State mDriverStoppingState = new DriverStoppingState(); 889 /* Driver stopped */ 890 private State mDriverStoppedState = new DriverStoppedState(); 891 /* Scan for networks, no connection will be established */ 892 private State mScanModeState = new ScanModeState(); 893 /* Connecting to an access point */ 894 private State mConnectModeState = new ConnectModeState(); 895 /* Connected at 802.11 (L2) level */ 896 private State mL2ConnectedState = new L2ConnectedState(); 897 /* fetching IP after connection to access point (assoc+auth complete) */ 898 private State mObtainingIpState = new ObtainingIpState(); 899 /* Waiting for link quality verification to be complete */ 900 private State mVerifyingLinkState = new VerifyingLinkState(); 901 /* Connected with IP addr */ 902 private State mConnectedState = new ConnectedState(); 903 /* Roaming */ 904 private State mRoamingState = new RoamingState(); 905 /* disconnect issued, waiting for network disconnect confirmation */ 906 private State mDisconnectingState = new DisconnectingState(); 907 /* Network is not connected, supplicant assoc+auth is not complete */ 908 private State mDisconnectedState = new DisconnectedState(); 909 /* Waiting for WPS to be completed*/ 910 private State mWpsRunningState = new WpsRunningState(); 911 912 /* Soft ap is starting up */ 913 private State mSoftApStartingState = new SoftApStartingState(); 914 /* Soft ap is running */ 915 private State mSoftApStartedState = new SoftApStartedState(); 916 /* Soft ap is running and we are waiting for tether notification */ 917 private State mTetheringState = new TetheringState(); 918 /* Soft ap is running and we are tethered through connectivity service */ 919 private State mTetheredState = new TetheredState(); 920 /* Waiting for untether confirmation before stopping soft Ap */ 921 private State mUntetheringState = new UntetheringState(); 922 923 924 925 private class WifiScanListener implements WifiScanner.ScanListener { 926 @Override 927 public void onSuccess() { 928 Log.e(TAG, "WifiScanListener onSuccess"); 929 }; 930 @Override 931 public void onFailure(int reason, String description) { 932 Log.e(TAG, "WifiScanListener onFailure"); 933 }; 934 @Override 935 public void onPeriodChanged(int periodInMs) { 936 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 937 } 938 @Override 939 public void onResults(WifiScanner.ScanData[] results) { 940 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 941 } 942 @Override 943 public void onFullResult(ScanResult fullScanResult) { 944 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 945 } 946 947 WifiScanListener() {} 948 } 949 950 WifiScanListener mWifiScanListener = new WifiScanListener(); 951 952 953 private class TetherStateChange { 954 ArrayList<String> available; 955 ArrayList<String> active; 956 957 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 958 available = av; 959 active = ac; 960 } 961 } 962 963 public static class SimAuthRequestData { 964 int networkId; 965 int protocol; 966 String ssid; 967 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 968 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 969 String[] data; 970 } 971 972 /** 973 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 974 * {@link WifiManager#WIFI_STATE_DISABLING}, 975 * {@link WifiManager#WIFI_STATE_ENABLED}, 976 * {@link WifiManager#WIFI_STATE_ENABLING}, 977 * {@link WifiManager#WIFI_STATE_UNKNOWN} 978 */ 979 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 980 981 /** 982 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 983 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 984 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 985 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 986 * {@link WifiManager#WIFI_AP_STATE_FAILED} 987 */ 988 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 989 990 private static final int SCAN_REQUEST = 0; 991 private static final String ACTION_START_SCAN = 992 "com.android.server.WifiManager.action.START_SCAN"; 993 994 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 995 private static final int DRIVER_STOP_REQUEST = 0; 996 private static final String ACTION_DELAYED_DRIVER_STOP = 997 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 998 999 /** 1000 * Keep track of whether WIFI is running. 1001 */ 1002 private boolean mIsRunning = false; 1003 1004 /** 1005 * Keep track of whether we last told the battery stats we had started. 1006 */ 1007 private boolean mReportedRunning = false; 1008 1009 /** 1010 * Most recently set source of starting WIFI. 1011 */ 1012 private final WorkSource mRunningWifiUids = new WorkSource(); 1013 1014 /** 1015 * The last reported UIDs that were responsible for starting WIFI. 1016 */ 1017 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1018 1019 private final IBatteryStats mBatteryStats; 1020 1021 private String mTcpBufferSizes = null; 1022 1023 // Used for debug and stats gathering 1024 private static int sScanAlarmIntentCount = 0; 1025 1026 final static int frameworkMinScanIntervalSaneValue = 10000; 1027 1028 boolean mPnoEnabled; 1029 boolean mLazyRoamEnabled; 1030 long mGScanStartTimeMilli; 1031 long mGScanPeriodMilli; 1032 1033 public WifiStateMachine(Context context, String wlanInterface, 1034 WifiTrafficPoller trafficPoller) { 1035 super("WifiStateMachine"); 1036 mContext = context; 1037 mSetCountryCode = Settings.Global.getString( 1038 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1039 mInterfaceName = wlanInterface; 1040 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1041 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1042 BatteryStats.SERVICE_NAME)); 1043 1044 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1045 mNwService = INetworkManagementService.Stub.asInterface(b); 1046 1047 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1048 PackageManager.FEATURE_WIFI_DIRECT); 1049 1050 mWifiNative = new WifiNative(mInterfaceName); 1051 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 1052 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1053 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1054 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1055 mWifiLogger = new WifiLogger(this); 1056 1057 mWifiInfo = new WifiInfo(); 1058 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1059 getHandler()); 1060 mLinkProperties = new LinkProperties(); 1061 1062 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1063 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1064 1065 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1066 1067 mNetworkInfo.setIsAvailable(false); 1068 mLastBssid = null; 1069 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1070 mLastSignalLevel = -1; 1071 1072 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1073 public void update() { 1074 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1075 } 1076 }); 1077 try { 1078 mNwService.registerObserver(mNetlinkTracker); 1079 } catch (RemoteException e) { 1080 loge("Couldn't register netlink tracker: " + e.toString()); 1081 } 1082 1083 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1084 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1085 1086 // Make sure the interval is not configured less than 10 seconds 1087 int period = mContext.getResources().getInteger( 1088 R.integer.config_wifi_framework_scan_interval); 1089 if (period < frameworkMinScanIntervalSaneValue) { 1090 period = frameworkMinScanIntervalSaneValue; 1091 } 1092 mDefaultFrameworkScanIntervalMs = period; 1093 1094 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1095 R.integer.config_wifi_no_network_periodic_scan_interval); 1096 1097 mDriverStopDelayMs = mContext.getResources().getInteger( 1098 R.integer.config_wifi_driver_stop_delay); 1099 1100 mBackgroundScanSupported = mContext.getResources().getBoolean( 1101 R.bool.config_wifi_background_scan_support); 1102 1103 mPrimaryDeviceType = mContext.getResources().getString( 1104 R.string.config_wifi_p2p_device_type); 1105 1106 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1107 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1108 1109 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1110 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1111 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1112 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1113 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1114 // TODO - needs to be a bit more dynamic 1115 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1116 1117 mContext.registerReceiver( 1118 new BroadcastReceiver() { 1119 @Override 1120 public void onReceive(Context context, Intent intent) { 1121 ArrayList<String> available = intent.getStringArrayListExtra( 1122 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1123 ArrayList<String> active = intent.getStringArrayListExtra( 1124 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1125 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1126 } 1127 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1128 1129 mContext.registerReceiver( 1130 new BroadcastReceiver() { 1131 @Override 1132 public void onReceive(Context context, Intent intent) { 1133 sScanAlarmIntentCount++; // Used for debug only 1134 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1135 if (VDBG) 1136 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1137 } 1138 }, 1139 new IntentFilter(ACTION_START_SCAN)); 1140 1141 IntentFilter filter = new IntentFilter(); 1142 filter.addAction(Intent.ACTION_SCREEN_ON); 1143 filter.addAction(Intent.ACTION_SCREEN_OFF); 1144 mContext.registerReceiver( 1145 new BroadcastReceiver() { 1146 @Override 1147 public void onReceive(Context context, Intent intent) { 1148 String action = intent.getAction(); 1149 1150 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1151 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1152 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1153 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1154 } 1155 } 1156 }, filter); 1157 1158 mContext.registerReceiver( 1159 new BroadcastReceiver() { 1160 @Override 1161 public void onReceive(Context context, Intent intent) { 1162 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1163 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1164 } 1165 }, 1166 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1167 1168 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1169 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1170 new ContentObserver(getHandler()) { 1171 @Override 1172 public void onChange(boolean selfChange) { 1173 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1174 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1175 } 1176 }); 1177 1178 mContext.registerReceiver( 1179 new BroadcastReceiver() { 1180 @Override 1181 public void onReceive(Context context, Intent intent) { 1182 sendMessage(CMD_BOOT_COMPLETED); 1183 } 1184 }, 1185 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1186 1187 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1188 1189 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1190 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1191 1192 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1193 mSuspendWakeLock.setReferenceCounted(false); 1194 1195 mTcpBufferSizes = mContext.getResources().getString( 1196 com.android.internal.R.string.config_wifi_tcp_buffers); 1197 1198 addState(mDefaultState); 1199 addState(mInitialState, mDefaultState); 1200 addState(mSupplicantStartingState, mDefaultState); 1201 addState(mSupplicantStartedState, mDefaultState); 1202 addState(mDriverStartingState, mSupplicantStartedState); 1203 addState(mDriverStartedState, mSupplicantStartedState); 1204 addState(mScanModeState, mDriverStartedState); 1205 addState(mConnectModeState, mDriverStartedState); 1206 addState(mL2ConnectedState, mConnectModeState); 1207 addState(mObtainingIpState, mL2ConnectedState); 1208 addState(mVerifyingLinkState, mL2ConnectedState); 1209 addState(mConnectedState, mL2ConnectedState); 1210 addState(mRoamingState, mL2ConnectedState); 1211 addState(mDisconnectingState, mConnectModeState); 1212 addState(mDisconnectedState, mConnectModeState); 1213 addState(mWpsRunningState, mConnectModeState); 1214 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1215 addState(mDriverStoppingState, mSupplicantStartedState); 1216 addState(mDriverStoppedState, mSupplicantStartedState); 1217 addState(mSupplicantStoppingState, mDefaultState); 1218 addState(mSoftApStartingState, mDefaultState); 1219 addState(mSoftApStartedState, mDefaultState); 1220 addState(mTetheringState, mSoftApStartedState); 1221 addState(mTetheredState, mSoftApStartedState); 1222 addState(mUntetheringState, mSoftApStartedState); 1223 1224 setInitialState(mInitialState); 1225 1226 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1227 setLogOnlyTransitions(false); 1228 if (VDBG) setDbg(true); 1229 1230 //start the state machine 1231 start(); 1232 1233 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1234 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1235 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1236 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1237 } 1238 1239 1240 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1241 Intent intent = new Intent(action, null); 1242 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1243 intent.setPackage(this.getClass().getPackage().getName()); 1244 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1245 } 1246 1247 private int mVerboseLoggingLevel = 0; 1248 1249 int getVerboseLoggingLevel() { 1250 return mVerboseLoggingLevel; 1251 } 1252 1253 void enableVerboseLogging(int verbose) { 1254 mVerboseLoggingLevel = verbose; 1255 if (verbose > 0) { 1256 DBG = true; 1257 VDBG = true; 1258 PDBG = true; 1259 mLogMessages = true; 1260 //mWifiNative.setSupplicantLogLevel("DEBUG"); 1261 } else { 1262 DBG = false; 1263 VDBG = false; 1264 PDBG = false; 1265 mLogMessages = false; 1266 mWifiNative.setSupplicantLogLevel("INFO"); 1267 } 1268 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1269 mWifiAutoJoinController.enableVerboseLogging(verbose); 1270 mWifiMonitor.enableVerboseLogging(verbose); 1271 mWifiNative.enableVerboseLogging(verbose); 1272 mWifiConfigStore.enableVerboseLogging(verbose); 1273 mSupplicantStateTracker.enableVerboseLogging(verbose); 1274 } 1275 1276 public void setHalBasedAutojoinOffload(int enabled) { 1277 // Shoult be used for debug only, triggered form developper settings 1278 // enabling HAl based PNO dynamically is not safe and not a normal operation 1279 mHalBasedPnoEnableInDevSettings = enabled > 0; 1280 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1281 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1282 sendMessage(CMD_DISCONNECT); 1283 } 1284 1285 public void setAllowNetworkSwitchingWhileAssociated(int enabled) { 1286 mEnableAssociatedNetworkSwitchingInDevSettings = enabled > 0; 1287 } 1288 1289 int getHalBasedAutojoinOffload() { 1290 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1291 } 1292 1293 int getAllowNetworkSwitchingWhileAssociated() { 1294 return mEnableAssociatedNetworkSwitchingInDevSettings ? 1 : 0; 1295 } 1296 1297 boolean useHalBasedAutoJoinOffload() { 1298 // all three settings need to be true: 1299 // - developper settings switch 1300 // - driver support 1301 // - config option 1302 return mHalBasedPnoEnableInDevSettings 1303 && mHalBasedPnoDriverSupported 1304 && mWifiConfigStore.enableHalBasedPno.get(); 1305 } 1306 1307 boolean allowFullBandScanAndAssociated() { 1308 1309 if (!mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 1310 if (DBG) { 1311 Log.e(TAG, "allowFullBandScanAndAssociated: " 1312 + " enableAutoJoinScanWhenAssociated : disallow"); 1313 } 1314 return false; 1315 } 1316 1317 if (mWifiInfo.txSuccessRate > 1318 mWifiConfigStore.maxTxPacketForFullScans 1319 || mWifiInfo.rxSuccessRate > 1320 mWifiConfigStore.maxRxPacketForFullScans) { 1321 if (DBG) { 1322 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1323 + mWifiInfo.txSuccessRate + " rx " 1324 + mWifiInfo.rxSuccessRate 1325 + " allow scan with traffic " + getAllowScansWithTraffic()); 1326 } 1327 // Too much traffic at the interface, hence no full band scan 1328 if (getAllowScansWithTraffic() == 0) { 1329 return false; 1330 } 1331 } 1332 1333 if (getCurrentState() != mConnectedState) { 1334 if (DBG) { 1335 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1336 } 1337 return false; 1338 } 1339 1340 return true; 1341 } 1342 1343 long mLastScanPermissionUpdate = 0; 1344 boolean mConnectedModeGScanOffloadStarted = false; 1345 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1346 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1347 // we want to throttle the GScan Stop->Start transition 1348 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1349 void updateAssociatedScanPermission() { 1350 1351 if (useHalBasedAutoJoinOffload()) { 1352 boolean allowed = allowFullBandScanAndAssociated(); 1353 1354 long now = System.currentTimeMillis(); 1355 if (mConnectedModeGScanOffloadStarted && !allowed) { 1356 if (DBG) { 1357 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1358 } 1359 stopPnoOffload(); 1360 stopGScan(" useHalBasedAutoJoinOffload"); 1361 } 1362 if (!mConnectedModeGScanOffloadStarted && allowed) { 1363 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1364 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1365 // to look for 5GHz BSSIDs and better networks 1366 if (DBG) { 1367 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1368 } 1369 startGScanConnectedModeOffload("updatePermission " 1370 + (now - mLastScanPermissionUpdate) + "ms"); 1371 mLastScanPermissionUpdate = now; 1372 } 1373 } 1374 } 1375 } 1376 1377 private int mAggressiveHandover = 0; 1378 1379 int getAggressiveHandover() { 1380 return mAggressiveHandover; 1381 } 1382 1383 void enableAggressiveHandover(int enabled) { 1384 mAggressiveHandover = enabled; 1385 } 1386 1387 public void clearANQPCache() { 1388 mWifiConfigStore.clearANQPCache(); 1389 } 1390 1391 public void setAllowScansWithTraffic(int enabled) { 1392 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1393 } 1394 1395 public int getAllowScansWithTraffic() { 1396 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1397 } 1398 1399 public void setAllowScansWhileAssociated(int enabled) { 1400 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled > 0 ? true : false); 1401 } 1402 1403 public int getAllowScansWhileAssociated() { 1404 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get() ? 1 : 0; 1405 } 1406 1407 /* 1408 * 1409 * Framework scan control 1410 */ 1411 1412 private boolean mAlarmEnabled = false; 1413 1414 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1415 1416 private void setScanAlarm(boolean enabled) { 1417 if (PDBG) { 1418 String state; 1419 if (enabled) state = "enabled"; else state = "disabled"; 1420 loge("setScanAlarm " + state 1421 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1422 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1423 } 1424 if (mBackgroundScanSupported == false) { 1425 // Scan alarm is only used for background scans if they are not 1426 // offloaded to the wifi chipset, hence enable the scan alarm 1427 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1428 enabled = true; 1429 } 1430 1431 if (enabled == mAlarmEnabled) return; 1432 if (enabled) { 1433 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1434 /* going to wake up the host processor to look for access points */ 1435 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1436 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1437 mScanIntent); 1438 mAlarmEnabled = true; 1439 } else { 1440 mAlarmManager.cancel(mScanIntent); 1441 mAlarmEnabled = false; 1442 } 1443 } 1444 1445 private void cancelDelayedScan() { 1446 mDelayedScanCounter.incrementAndGet(); 1447 } 1448 1449 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1450 ScanSettings settings, WorkSource workSource) { 1451 1452 if (counter != mDelayedScanCounter.get()) { 1453 return false; 1454 } 1455 if (restart) 1456 startDelayedScan(milli, settings, workSource); 1457 return true; 1458 } 1459 1460 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1461 if (milli <= 0) return; 1462 /** 1463 * The cases where the scan alarm should be run are : 1464 * - DisconnectedState && screenOn => used delayed timer 1465 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1466 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1467 * - ConnectedState && screenOn => used delayed timer 1468 */ 1469 1470 mDelayedScanCounter.incrementAndGet(); 1471 if (mScreenOn && 1472 (getCurrentState() == mDisconnectedState 1473 || getCurrentState() == mConnectedState)) { 1474 Bundle bundle = new Bundle(); 1475 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1476 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1477 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1478 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1479 mDelayedScanCounter.get(), bundle, milli); 1480 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1481 } else if (mBackgroundScanSupported == false 1482 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1483 setScanAlarm(true); 1484 if (DBG) loge("startDelayedScan start scan alarm -> " 1485 + mDelayedScanCounter + " milli " + milli); 1486 } else { 1487 if (DBG) loge("startDelayedScan unhandled -> " 1488 + mDelayedScanCounter + " milli " + milli); 1489 } 1490 } 1491 1492 private boolean setRandomMacOui() { 1493 String oui = mContext.getResources().getString( 1494 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1495 String[] ouiParts = oui.split("-"); 1496 byte[] ouiBytes = new byte[3]; 1497 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1498 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1499 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1500 1501 logd("Setting OUI to " + oui); 1502 return mWifiNative.setScanningMacOui(ouiBytes); 1503 } 1504 1505 /** 1506 * ****************************************************** 1507 * Methods exposed for public use 1508 * ****************************************************** 1509 */ 1510 1511 public Messenger getMessenger() { 1512 return new Messenger(getHandler()); 1513 } 1514 1515 public WifiMonitor getWifiMonitor() { 1516 return mWifiMonitor; 1517 } 1518 1519 /** 1520 * TODO: doc 1521 */ 1522 public boolean syncPingSupplicant(AsyncChannel channel) { 1523 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1524 boolean result = (resultMsg.arg1 != FAILURE); 1525 resultMsg.recycle(); 1526 return result; 1527 } 1528 1529 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1530 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1531 List<WifiChannel> list = null; 1532 if (resultMsg.obj != null) { 1533 list = new ArrayList<WifiChannel>(); 1534 String freqs = (String) resultMsg.obj; 1535 String[] lines = freqs.split("\n"); 1536 for (String line : lines) 1537 if (line.contains("MHz")) { 1538 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1539 WifiChannel c = new WifiChannel(); 1540 String[] prop = line.split(" "); 1541 if (prop.length < 5) continue; 1542 try { 1543 c.channelNum = Integer.parseInt(prop[1]); 1544 c.freqMHz = Integer.parseInt(prop[3]); 1545 } catch (NumberFormatException e) { 1546 } 1547 c.isDFS = line.contains("(DFS)"); 1548 list.add(c); 1549 } else if (line.contains("Mode[B] Channels:")) { 1550 // B channels are the same as G channels, skipped 1551 break; 1552 } 1553 } 1554 resultMsg.recycle(); 1555 return (list != null && list.size() > 0) ? list : null; 1556 } 1557 1558 /** 1559 * When settings allowing making use of untrusted networks change, trigger a scan 1560 * so as to kick of autojoin. 1561 */ 1562 public void startScanForUntrustedSettingChange() { 1563 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1564 } 1565 1566 /** 1567 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1568 * given to callingUid. 1569 * 1570 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1571 * workSource is specified. 1572 * @param workSource If not null, blame is given to workSource. 1573 * @param settings Scan settings, see {@link ScanSettings}. 1574 */ 1575 public void startScan(int callingUid, int scanCounter, 1576 ScanSettings settings, WorkSource workSource) { 1577 Bundle bundle = new Bundle(); 1578 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1579 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1580 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1581 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1582 } 1583 1584 // called from BroadcastListener 1585 1586 /** 1587 * Start reading new scan data 1588 * Data comes in as: 1589 * "scancount=5\n" 1590 * "nextcount=5\n" 1591 * "apcount=3\n" 1592 * "trunc\n" (optional) 1593 * "bssid=...\n" 1594 * "ssid=...\n" 1595 * "freq=...\n" (in Mhz) 1596 * "level=...\n" 1597 * "dist=...\n" (in cm) 1598 * "distsd=...\n" (standard deviation, in cm) 1599 * "====" 1600 * "bssid=...\n" 1601 * etc 1602 * "====" 1603 * "bssid=...\n" 1604 * etc 1605 * "%%%%" 1606 * "apcount=2\n" 1607 * "bssid=...\n" 1608 * etc 1609 * "%%%% 1610 * etc 1611 * "----" 1612 */ 1613 private final static boolean DEBUG_PARSE = false; 1614 1615 private long mDisconnectedTimeStamp = 0; 1616 1617 public long getDisconnectedTimeMilli() { 1618 if (getCurrentState() == mDisconnectedState 1619 && mDisconnectedTimeStamp != 0) { 1620 long now_ms = System.currentTimeMillis(); 1621 return now_ms - mDisconnectedTimeStamp; 1622 } 1623 return 0; 1624 } 1625 1626 // Keeping track of scan requests 1627 private long lastStartScanTimeStamp = 0; 1628 private long lastScanDuration = 0; 1629 // Last connect attempt is used to prevent scan requests: 1630 // - for a period of 10 seconds after attempting to connect 1631 private long lastConnectAttempt = 0; 1632 private String lastScanFreqs = null; 1633 1634 // For debugging, keep track of last message status handling 1635 // TODO, find an equivalent mechanism as part of parent class 1636 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1637 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1638 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1639 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1640 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1641 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1642 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1643 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1644 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1645 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1646 1647 private int messageHandlingStatus = 0; 1648 1649 //TODO: this is used only to track connection attempts, however the link state and packet per 1650 //TODO: second logic should be folded into that 1651 private boolean checkOrDeferScanAllowed(Message msg) { 1652 long now = System.currentTimeMillis(); 1653 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1654 Message dmsg = Message.obtain(msg); 1655 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1656 return false; 1657 } 1658 return true; 1659 } 1660 1661 private int mOnTime = 0; 1662 private int mTxTime = 0; 1663 private int mRxTime = 0; 1664 private int mOnTimeStartScan = 0; 1665 private int mTxTimeStartScan = 0; 1666 private int mRxTimeStartScan = 0; 1667 private int mOnTimeScan = 0; 1668 private int mTxTimeScan = 0; 1669 private int mRxTimeScan = 0; 1670 private int mOnTimeThisScan = 0; 1671 private int mTxTimeThisScan = 0; 1672 private int mRxTimeThisScan = 0; 1673 1674 private int mOnTimeScreenStateChange = 0; 1675 private int mOnTimeAtLastReport = 0; 1676 private long lastOntimeReportTimeStamp = 0; 1677 private long lastScreenStateChangeTimeStamp = 0; 1678 private int mOnTimeLastReport = 0; 1679 private int mTxTimeLastReport = 0; 1680 private int mRxTimeLastReport = 0; 1681 1682 private long lastLinkLayerStatsUpdate = 0; 1683 1684 String reportOnTime() { 1685 long now = System.currentTimeMillis(); 1686 StringBuilder sb = new StringBuilder(); 1687 // Report stats since last report 1688 int on = mOnTime - mOnTimeLastReport; 1689 mOnTimeLastReport = mOnTime; 1690 int tx = mTxTime - mTxTimeLastReport; 1691 mTxTimeLastReport = mTxTime; 1692 int rx = mRxTime - mRxTimeLastReport; 1693 mRxTimeLastReport = mRxTime; 1694 int period = (int) (now - lastOntimeReportTimeStamp); 1695 lastOntimeReportTimeStamp = now; 1696 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1697 // Report stats since Screen State Changed 1698 on = mOnTime - mOnTimeScreenStateChange; 1699 period = (int) (now - lastScreenStateChangeTimeStamp); 1700 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1701 return sb.toString(); 1702 } 1703 1704 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1705 WifiLinkLayerStats stats = null; 1706 if (mWifiLinkLayerStatsSupported > 0) { 1707 String name = "wlan0"; 1708 stats = mWifiNative.getWifiLinkLayerStats(name); 1709 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1710 mWifiLinkLayerStatsSupported -= 1; 1711 } else if (stats != null) { 1712 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1713 mOnTime = stats.on_time; 1714 mTxTime = stats.tx_time; 1715 mRxTime = stats.rx_time; 1716 mRunningBeaconCount = stats.beacon_rx; 1717 if (dbg) { 1718 // loge(stats.toString()); 1719 } 1720 } 1721 } 1722 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1723 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1724 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1725 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1726 } else { 1727 mWifiInfo.updatePacketRates(stats); 1728 } 1729 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1730 return stats; 1731 } 1732 1733 void startRadioScanStats() { 1734 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1735 if (stats != null) { 1736 mOnTimeStartScan = stats.on_time; 1737 mTxTimeStartScan = stats.tx_time; 1738 mRxTimeStartScan = stats.rx_time; 1739 mOnTime = stats.on_time; 1740 mTxTime = stats.tx_time; 1741 mRxTime = stats.rx_time; 1742 } 1743 } 1744 1745 void closeRadioScanStats() { 1746 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1747 if (stats != null) { 1748 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1749 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1750 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1751 mOnTimeScan += mOnTimeThisScan; 1752 mTxTimeScan += mTxTimeThisScan; 1753 mRxTimeScan += mRxTimeThisScan; 1754 } 1755 } 1756 1757 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1758 private void noteScanStart(int callingUid, WorkSource workSource) { 1759 long now = System.currentTimeMillis(); 1760 lastStartScanTimeStamp = now; 1761 lastScanDuration = 0; 1762 if (DBG) { 1763 String ts = String.format("[%,d ms]", now); 1764 if (workSource != null) { 1765 loge(ts + " noteScanStart" + workSource.toString() 1766 + " uid " + Integer.toString(callingUid)); 1767 } else { 1768 loge(ts + " noteScanstart no scan source" 1769 + " uid " + Integer.toString(callingUid)); 1770 } 1771 } 1772 startRadioScanStats(); 1773 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1774 && callingUid != SCAN_ALARM_SOURCE) 1775 || workSource != null)) { 1776 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1777 1778 WorkSource batteryWorkSource = mScanWorkSource; 1779 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1780 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1781 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1782 } 1783 1784 try { 1785 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1786 } catch (RemoteException e) { 1787 log(e.toString()); 1788 } 1789 } 1790 } 1791 1792 private void noteScanEnd() { 1793 long now = System.currentTimeMillis(); 1794 if (lastStartScanTimeStamp != 0) { 1795 lastScanDuration = now - lastStartScanTimeStamp; 1796 } 1797 lastStartScanTimeStamp = 0; 1798 if (DBG) { 1799 String ts = String.format("[%,d ms]", now); 1800 if (mScanWorkSource != null) 1801 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1802 + " onTime=" + mOnTimeThisScan); 1803 else 1804 loge(ts + " noteScanEnd no scan source" 1805 + " onTime=" + mOnTimeThisScan); 1806 } 1807 if (mScanWorkSource != null) { 1808 try { 1809 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1810 } catch (RemoteException e) { 1811 log(e.toString()); 1812 } finally { 1813 mScanWorkSource = null; 1814 } 1815 } 1816 } 1817 1818 private void handleScanRequest(int type, Message message) { 1819 ScanSettings settings = null; 1820 WorkSource workSource = null; 1821 1822 // unbundle parameters 1823 Bundle bundle = (Bundle) message.obj; 1824 1825 if (bundle != null) { 1826 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1827 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1828 } 1829 1830 // parse scan settings 1831 String freqs = null; 1832 if (settings != null && settings.channelSet != null) { 1833 StringBuilder sb = new StringBuilder(); 1834 boolean first = true; 1835 for (WifiChannel channel : settings.channelSet) { 1836 if (!first) sb.append(','); 1837 else first = false; 1838 sb.append(channel.freqMHz); 1839 } 1840 freqs = sb.toString(); 1841 } 1842 1843 // call wifi native to start the scan 1844 if (startScanNative(type, freqs)) { 1845 // only count battery consumption if scan request is accepted 1846 noteScanStart(message.arg1, workSource); 1847 // a full scan covers everything, clearing scan request buffer 1848 if (freqs == null) 1849 mBufferedScanMsg.clear(); 1850 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1851 if (workSource != null) { 1852 // External worksource was passed along the scan request, 1853 // hence always send a broadcast 1854 mSendScanResultsBroadcast = true; 1855 } 1856 return; 1857 } 1858 1859 // if reach here, scan request is rejected 1860 1861 if (!mIsScanOngoing) { 1862 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1863 1864 // discard this request and pop up the next one 1865 if (mBufferedScanMsg.size() > 0) { 1866 sendMessage(mBufferedScanMsg.remove()); 1867 } 1868 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1869 } else if (!mIsFullScanOngoing) { 1870 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1871 // buffer the scan request to make sure specified channels will be scanned eventually 1872 if (freqs == null) 1873 mBufferedScanMsg.clear(); 1874 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1875 Message msg = obtainMessage(CMD_START_SCAN, 1876 message.arg1, message.arg2, bundle); 1877 mBufferedScanMsg.add(msg); 1878 } else { 1879 // if too many requests in buffer, combine them into a single full scan 1880 bundle = new Bundle(); 1881 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1882 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1883 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1884 mBufferedScanMsg.clear(); 1885 mBufferedScanMsg.add(msg); 1886 } 1887 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1888 } else { 1889 // mIsScanOngoing and mIsFullScanOngoing 1890 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1891 } 1892 } 1893 1894 1895 /** 1896 * return true iff scan request is accepted 1897 */ 1898 private boolean startScanNative(int type, String freqs) { 1899 if (mWifiNative.scan(type, freqs)) { 1900 mIsScanOngoing = true; 1901 mIsFullScanOngoing = (freqs == null); 1902 lastScanFreqs = freqs; 1903 return true; 1904 } 1905 return false; 1906 } 1907 1908 /** 1909 * TODO: doc 1910 */ 1911 public void setSupplicantRunning(boolean enable) { 1912 if (enable) { 1913 sendMessage(CMD_START_SUPPLICANT); 1914 } else { 1915 sendMessage(CMD_STOP_SUPPLICANT); 1916 } 1917 } 1918 1919 /** 1920 * TODO: doc 1921 */ 1922 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1923 if (enable) { 1924 sendMessage(CMD_START_AP, wifiConfig); 1925 } else { 1926 sendMessage(CMD_STOP_AP); 1927 } 1928 } 1929 1930 public void setWifiApConfiguration(WifiConfiguration config) { 1931 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1932 } 1933 1934 public WifiConfiguration syncGetWifiApConfiguration() { 1935 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1936 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1937 resultMsg.recycle(); 1938 return ret; 1939 } 1940 1941 /** 1942 * TODO: doc 1943 */ 1944 public int syncGetWifiState() { 1945 return mWifiState.get(); 1946 } 1947 1948 /** 1949 * TODO: doc 1950 */ 1951 public String syncGetWifiStateByName() { 1952 switch (mWifiState.get()) { 1953 case WIFI_STATE_DISABLING: 1954 return "disabling"; 1955 case WIFI_STATE_DISABLED: 1956 return "disabled"; 1957 case WIFI_STATE_ENABLING: 1958 return "enabling"; 1959 case WIFI_STATE_ENABLED: 1960 return "enabled"; 1961 case WIFI_STATE_UNKNOWN: 1962 return "unknown state"; 1963 default: 1964 return "[invalid state]"; 1965 } 1966 } 1967 1968 /** 1969 * TODO: doc 1970 */ 1971 public int syncGetWifiApState() { 1972 return mWifiApState.get(); 1973 } 1974 1975 /** 1976 * TODO: doc 1977 */ 1978 public String syncGetWifiApStateByName() { 1979 switch (mWifiApState.get()) { 1980 case WIFI_AP_STATE_DISABLING: 1981 return "disabling"; 1982 case WIFI_AP_STATE_DISABLED: 1983 return "disabled"; 1984 case WIFI_AP_STATE_ENABLING: 1985 return "enabling"; 1986 case WIFI_AP_STATE_ENABLED: 1987 return "enabled"; 1988 case WIFI_AP_STATE_FAILED: 1989 return "failed"; 1990 default: 1991 return "[invalid state]"; 1992 } 1993 } 1994 1995 /** 1996 * Get status information for the current connection, if any. 1997 * 1998 * @return a {@link WifiInfo} object containing information about the current connection 1999 */ 2000 public WifiInfo syncRequestConnectionInfo() { 2001 return getWiFiInfoForUid(Binder.getCallingUid()); 2002 } 2003 2004 public DhcpResults syncGetDhcpResults() { 2005 synchronized (mDhcpResultsLock) { 2006 return new DhcpResults(mDhcpResults); 2007 } 2008 } 2009 2010 /** 2011 * TODO: doc 2012 */ 2013 public void setDriverStart(boolean enable) { 2014 if (enable) { 2015 sendMessage(CMD_START_DRIVER); 2016 } else { 2017 sendMessage(CMD_STOP_DRIVER); 2018 } 2019 } 2020 2021 /** 2022 * TODO: doc 2023 */ 2024 public void setOperationalMode(int mode) { 2025 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2026 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2027 } 2028 2029 /** 2030 * TODO: doc 2031 */ 2032 public List<ScanResult> syncGetScanResultsList() { 2033 synchronized (mScanResultCache) { 2034 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2035 for (ScanDetail result : mScanResults) { 2036 scanList.add(new ScanResult(result.getScanResult())); 2037 } 2038 return scanList; 2039 } 2040 } 2041 2042 public void disableEphemeralNetwork(String SSID) { 2043 if (SSID != null) { 2044 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2045 } 2046 } 2047 2048 /** 2049 * Get unsynchronized pointer to scan result list 2050 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2051 */ 2052 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2053 return mScanResults; 2054 } 2055 2056 /** 2057 * Disconnect from Access Point 2058 */ 2059 public void disconnectCommand() { 2060 sendMessage(CMD_DISCONNECT); 2061 } 2062 2063 public void disconnectCommand(int uid, int reason) { 2064 sendMessage(CMD_DISCONNECT, uid, reason); 2065 } 2066 2067 /** 2068 * Initiate a reconnection to AP 2069 */ 2070 public void reconnectCommand() { 2071 sendMessage(CMD_RECONNECT); 2072 } 2073 2074 /** 2075 * Initiate a re-association to AP 2076 */ 2077 public void reassociateCommand() { 2078 sendMessage(CMD_REASSOCIATE); 2079 } 2080 2081 /** 2082 * Reload networks and then reconnect; helps load correct data for TLS networks 2083 */ 2084 2085 public void reloadTlsNetworksAndReconnect() { 2086 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2087 } 2088 2089 /** 2090 * Add a network synchronously 2091 * 2092 * @return network id of the new network 2093 */ 2094 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2095 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2096 int result = resultMsg.arg1; 2097 resultMsg.recycle(); 2098 return result; 2099 } 2100 2101 /** 2102 * Get configured networks synchronously 2103 * 2104 * @param channel 2105 * @return 2106 */ 2107 2108 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2109 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2110 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2111 resultMsg.recycle(); 2112 return result; 2113 } 2114 2115 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2116 Message resultMsg = channel.sendMessageSynchronously( 2117 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2118 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2119 resultMsg.recycle(); 2120 return result; 2121 } 2122 2123 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2124 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2125 return (WifiConfiguration) resultMsg.obj; 2126 } 2127 2128 /** 2129 * Get connection statistics synchronously 2130 * 2131 * @param channel 2132 * @return 2133 */ 2134 2135 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2136 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2137 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2138 resultMsg.recycle(); 2139 return result; 2140 } 2141 2142 /** 2143 * Get adaptors synchronously 2144 */ 2145 2146 public int syncGetSupportedFeatures(AsyncChannel channel) { 2147 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2148 int supportedFeatureSet = resultMsg.arg1; 2149 resultMsg.recycle(); 2150 return supportedFeatureSet; 2151 } 2152 2153 /** 2154 * Get link layers stats for adapter synchronously 2155 */ 2156 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2157 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2158 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2159 resultMsg.recycle(); 2160 return result; 2161 } 2162 2163 /** 2164 * Delete a network 2165 * 2166 * @param networkId id of the network to be removed 2167 */ 2168 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2169 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2170 boolean result = (resultMsg.arg1 != FAILURE); 2171 resultMsg.recycle(); 2172 return result; 2173 } 2174 2175 /** 2176 * Enable a network 2177 * 2178 * @param netId network id of the network 2179 * @param disableOthers true, if all other networks have to be disabled 2180 * @return {@code true} if the operation succeeds, {@code false} otherwise 2181 */ 2182 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2183 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2184 disableOthers ? 1 : 0); 2185 boolean result = (resultMsg.arg1 != FAILURE); 2186 resultMsg.recycle(); 2187 return result; 2188 } 2189 2190 /** 2191 * Disable a network 2192 * 2193 * @param netId network id of the network 2194 * @return {@code true} if the operation succeeds, {@code false} otherwise 2195 */ 2196 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2197 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2198 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2199 resultMsg.recycle(); 2200 return result; 2201 } 2202 2203 /** 2204 * Retrieves a WPS-NFC configuration token for the specified network 2205 * 2206 * @return a hex string representation of the WPS-NFC configuration token 2207 */ 2208 public String syncGetWpsNfcConfigurationToken(int netId) { 2209 return mWifiNative.getNfcWpsConfigurationToken(netId); 2210 } 2211 2212 void enableBackgroundScan(boolean enable) { 2213 if (enable) { 2214 mWifiConfigStore.enableAllNetworks(); 2215 } 2216 mWifiNative.enableBackgroundScan(enable); 2217 mLegacyPnoEnabled = enable; 2218 } 2219 2220 /** 2221 * Blacklist a BSSID. This will avoid the AP if there are 2222 * alternate APs to connect 2223 * 2224 * @param bssid BSSID of the network 2225 */ 2226 public void addToBlacklist(String bssid) { 2227 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2228 } 2229 2230 /** 2231 * Clear the blacklist list 2232 */ 2233 public void clearBlacklist() { 2234 sendMessage(CMD_CLEAR_BLACKLIST); 2235 } 2236 2237 public void enableRssiPolling(boolean enabled) { 2238 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2239 } 2240 2241 public void enableAllNetworks() { 2242 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2243 } 2244 2245 /** 2246 * Start filtering Multicast v4 packets 2247 */ 2248 public void startFilteringMulticastV4Packets() { 2249 mFilteringMulticastV4Packets.set(true); 2250 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2251 } 2252 2253 /** 2254 * Stop filtering Multicast v4 packets 2255 */ 2256 public void stopFilteringMulticastV4Packets() { 2257 mFilteringMulticastV4Packets.set(false); 2258 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2259 } 2260 2261 /** 2262 * Start filtering Multicast v4 packets 2263 */ 2264 public void startFilteringMulticastV6Packets() { 2265 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2266 } 2267 2268 /** 2269 * Stop filtering Multicast v4 packets 2270 */ 2271 public void stopFilteringMulticastV6Packets() { 2272 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2273 } 2274 2275 /** 2276 * Set high performance mode of operation. 2277 * Enabling would set active power mode and disable suspend optimizations; 2278 * disabling would set auto power mode and enable suspend optimizations 2279 * 2280 * @param enable true if enable, false otherwise 2281 */ 2282 public void setHighPerfModeEnabled(boolean enable) { 2283 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2284 } 2285 2286 /** 2287 * Set the country code 2288 * 2289 * @param countryCode following ISO 3166 format 2290 * @param persist {@code true} if the setting should be remembered. 2291 */ 2292 public synchronized void setCountryCode(String countryCode, boolean persist) { 2293 // If it's a good country code, apply after the current 2294 // wifi connection is terminated; ignore resetting of code 2295 // for now (it is unclear what the chipset should do when 2296 // country code is reset) 2297 2298 if (TextUtils.isEmpty(countryCode)) { 2299 log("Ignoring resetting of country code"); 2300 } else { 2301 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2302 // else only when the new country code is different from the current one to set 2303 int countryCodeSequence = mCountryCodeSequence.get(); 2304 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2305 2306 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2307 mSetCountryCode = countryCode; 2308 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2309 countryCode); 2310 } 2311 2312 if (persist) { 2313 Settings.Global.putString(mContext.getContentResolver(), 2314 Settings.Global.WIFI_COUNTRY_CODE, 2315 countryCode); 2316 } 2317 } 2318 } 2319 2320 /** 2321 * Get Network object of current wifi network 2322 * @return Network object of current wifi network 2323 */ 2324 public Network getCurrentNetwork() { 2325 if (mNetworkAgent != null) { 2326 return new Network(mNetworkAgent.netId); 2327 } else { 2328 return null; 2329 } 2330 } 2331 2332 /** 2333 * Get the country code 2334 * 2335 * @param countryCode following ISO 3166 format 2336 */ 2337 public String getCountryCode() { 2338 return mSetCountryCode; 2339 } 2340 2341 2342 /** 2343 * Set the operational frequency band 2344 * 2345 * @param band 2346 * @param persist {@code true} if the setting should be remembered. 2347 */ 2348 public void setFrequencyBand(int band, boolean persist) { 2349 if (persist) { 2350 Settings.Global.putInt(mContext.getContentResolver(), 2351 Settings.Global.WIFI_FREQUENCY_BAND, 2352 band); 2353 } 2354 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2355 } 2356 2357 /** 2358 * Enable TDLS for a specific MAC address 2359 */ 2360 public void enableTdls(String remoteMacAddress, boolean enable) { 2361 int enabler = enable ? 1 : 0; 2362 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2363 } 2364 2365 /** 2366 * Returns the operational frequency band 2367 */ 2368 public int getFrequencyBand() { 2369 return mFrequencyBand.get(); 2370 } 2371 2372 /** 2373 * Returns the wifi configuration file 2374 */ 2375 public String getConfigFile() { 2376 return mWifiConfigStore.getConfigFile(); 2377 } 2378 2379 /** 2380 * Send a message indicating bluetooth adapter connection state changed 2381 */ 2382 public void sendBluetoothAdapterStateChange(int state) { 2383 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2384 } 2385 2386 /** 2387 * Send a message indicating a package has been uninstalled. 2388 */ 2389 public void removeAppConfigs(String packageName, int uid) { 2390 // Build partial AppInfo manually - package may not exist in database any more 2391 ApplicationInfo ai = new ApplicationInfo(); 2392 ai.packageName = packageName; 2393 ai.uid = uid; 2394 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2395 } 2396 2397 /** 2398 * Send a message indicating a user has been removed. 2399 */ 2400 public void removeUserConfigs(int userId) { 2401 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2402 } 2403 2404 /** 2405 * Save configuration on supplicant 2406 * 2407 * @return {@code true} if the operation succeeds, {@code false} otherwise 2408 * <p/> 2409 * TODO: deprecate this 2410 */ 2411 public boolean syncSaveConfig(AsyncChannel channel) { 2412 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2413 boolean result = (resultMsg.arg1 != FAILURE); 2414 resultMsg.recycle(); 2415 return result; 2416 } 2417 2418 public void updateBatteryWorkSource(WorkSource newSource) { 2419 synchronized (mRunningWifiUids) { 2420 try { 2421 if (newSource != null) { 2422 mRunningWifiUids.set(newSource); 2423 } 2424 if (mIsRunning) { 2425 if (mReportedRunning) { 2426 // If the work source has changed since last time, need 2427 // to remove old work from battery stats. 2428 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2429 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2430 mRunningWifiUids); 2431 mLastRunningWifiUids.set(mRunningWifiUids); 2432 } 2433 } else { 2434 // Now being started, report it. 2435 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2436 mLastRunningWifiUids.set(mRunningWifiUids); 2437 mReportedRunning = true; 2438 } 2439 } else { 2440 if (mReportedRunning) { 2441 // Last reported we were running, time to stop. 2442 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2443 mLastRunningWifiUids.clear(); 2444 mReportedRunning = false; 2445 } 2446 } 2447 mWakeLock.setWorkSource(newSource); 2448 } catch (RemoteException ignore) { 2449 } 2450 } 2451 } 2452 2453 @Override 2454 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2455 super.dump(fd, pw, args); 2456 mSupplicantStateTracker.dump(fd, pw, args); 2457 pw.println("mLinkProperties " + mLinkProperties); 2458 pw.println("mWifiInfo " + mWifiInfo); 2459 pw.println("mDhcpResults " + mDhcpResults); 2460 pw.println("mNetworkInfo " + mNetworkInfo); 2461 pw.println("mLastSignalLevel " + mLastSignalLevel); 2462 pw.println("mLastBssid " + mLastBssid); 2463 pw.println("mLastNetworkId " + mLastNetworkId); 2464 pw.println("mOperationalMode " + mOperationalMode); 2465 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2466 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2467 pw.println("Supplicant status " + mWifiNative.status(true)); 2468 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2469 pw.println("mSetCountryCode " + mSetCountryCode); 2470 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2471 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2472 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2473 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2474 pw.println("SSID whitelist :" ); 2475 for (int i=0; i < mWhiteListedSsids.length; i++) { 2476 pw.println(" " + mWhiteListedSsids[i]); 2477 } 2478 } 2479 mNetworkFactory.dump(fd, pw, args); 2480 mUntrustedNetworkFactory.dump(fd, pw, args); 2481 pw.println(); 2482 mWifiConfigStore.dump(fd, pw, args); 2483 pw.println(); 2484 mWifiLogger.dump(fd, pw, args); 2485 } 2486 2487 /** 2488 * ****************************************************** 2489 * Internal private functions 2490 * ****************************************************** 2491 */ 2492 2493 private void logStateAndMessage(Message message, String state) { 2494 messageHandlingStatus = 0; 2495 if (mLogMessages) { 2496 //long now = SystemClock.elapsedRealtimeNanos(); 2497 //String ts = String.format("[%,d us]", now/1000); 2498 2499 loge(" " + state + " " + getLogRecString(message)); 2500 } 2501 } 2502 2503 /** 2504 * helper, prints the milli time since boot wi and w/o suspended time 2505 */ 2506 String printTime() { 2507 StringBuilder sb = new StringBuilder(); 2508 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2509 sb.append("/").append(SystemClock.elapsedRealtime()); 2510 return sb.toString(); 2511 } 2512 2513 /** 2514 * Return the additional string to be logged by LogRec, default 2515 * 2516 * @param msg that was processed 2517 * @return information to be logged as a String 2518 */ 2519 protected String getLogRecString(Message msg) { 2520 WifiConfiguration config; 2521 Long now; 2522 String report; 2523 String key; 2524 StringBuilder sb = new StringBuilder(); 2525 if (mScreenOn) { 2526 sb.append("!"); 2527 } 2528 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2529 sb.append("(").append(messageHandlingStatus).append(")"); 2530 } 2531 sb.append(smToString(msg)); 2532 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2533 sb.append(" uid=" + msg.sendingUid); 2534 } 2535 switch (msg.what) { 2536 case CMD_STARTED_GSCAN_DBG: 2537 case CMD_STARTED_PNO_DBG: 2538 sb.append(" "); 2539 sb.append(Integer.toString(msg.arg1)); 2540 sb.append(" "); 2541 sb.append(Integer.toString(msg.arg2)); 2542 if (msg.obj != null) { 2543 sb.append(" " + (String)msg.obj); 2544 } 2545 break; 2546 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2547 sb.append(" "); 2548 sb.append(Integer.toString(msg.arg1)); 2549 sb.append(" "); 2550 sb.append(Integer.toString(msg.arg2)); 2551 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2552 if (msg.obj != null) { 2553 sb.append(" " + (String)msg.obj); 2554 } 2555 break; 2556 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2557 sb.append(" "); 2558 sb.append(Integer.toString(msg.arg1)); 2559 sb.append(" "); 2560 sb.append(Integer.toString(msg.arg2)); 2561 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2562 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2563 sb.append(" autojoinAllowed="); 2564 sb.append(mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()); 2565 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2566 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2567 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2568 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2569 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2570 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2571 break; 2572 case CMD_PNO_NETWORK_FOUND: 2573 sb.append(" "); 2574 sb.append(Integer.toString(msg.arg1)); 2575 sb.append(" "); 2576 sb.append(Integer.toString(msg.arg2)); 2577 if (msg.obj != null) { 2578 ScanResult[] results = (ScanResult[])msg.obj; 2579 for (int i = 0; i < results.length; i++) { 2580 sb.append(" ").append(results[i].SSID).append(" "); 2581 sb.append(results[i].frequency); 2582 sb.append(" ").append(results[i].level); 2583 } 2584 } 2585 break; 2586 case CMD_START_SCAN: 2587 now = System.currentTimeMillis(); 2588 sb.append(" "); 2589 sb.append(Integer.toString(msg.arg1)); 2590 sb.append(" "); 2591 sb.append(Integer.toString(msg.arg2)); 2592 sb.append(" ic="); 2593 sb.append(Integer.toString(sScanAlarmIntentCount)); 2594 if (msg.obj != null) { 2595 Bundle bundle = (Bundle) msg.obj; 2596 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2597 if (request != 0) { 2598 sb.append(" proc(ms):").append(now - request); 2599 } 2600 } 2601 if (mIsScanOngoing) sb.append(" onGoing"); 2602 if (mIsFullScanOngoing) sb.append(" full"); 2603 if (lastStartScanTimeStamp != 0) { 2604 sb.append(" started:").append(lastStartScanTimeStamp); 2605 sb.append(",").append(now - lastStartScanTimeStamp); 2606 } 2607 if (lastScanDuration != 0) { 2608 sb.append(" dur:").append(lastScanDuration); 2609 } 2610 sb.append(" cnt=").append(mDelayedScanCounter); 2611 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2612 sb.append(" f=").append(mWifiInfo.getFrequency()); 2613 sb.append(" sc=").append(mWifiInfo.score); 2614 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2615 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2616 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2617 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2618 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2619 if (lastScanFreqs != null) { 2620 sb.append(" list=").append(lastScanFreqs); 2621 } else { 2622 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2623 } 2624 report = reportOnTime(); 2625 if (report != null) { 2626 sb.append(" ").append(report); 2627 } 2628 break; 2629 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2630 sb.append(" "); 2631 sb.append(Integer.toString(msg.arg1)); 2632 sb.append(" "); 2633 sb.append(Integer.toString(msg.arg2)); 2634 sb.append(printTime()); 2635 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2636 if (stateChangeResult != null) { 2637 sb.append(stateChangeResult.toString()); 2638 } 2639 break; 2640 case WifiManager.SAVE_NETWORK: 2641 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2642 sb.append(" "); 2643 sb.append(Integer.toString(msg.arg1)); 2644 sb.append(" "); 2645 sb.append(Integer.toString(msg.arg2)); 2646 if (lastSavedConfigurationAttempt != null) { 2647 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2648 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2649 if (lastSavedConfigurationAttempt.hiddenSSID) { 2650 sb.append(" hidden"); 2651 } 2652 if (lastSavedConfigurationAttempt.preSharedKey != null 2653 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2654 sb.append(" hasPSK"); 2655 } 2656 if (lastSavedConfigurationAttempt.ephemeral) { 2657 sb.append(" ephemeral"); 2658 } 2659 if (lastSavedConfigurationAttempt.selfAdded) { 2660 sb.append(" selfAdded"); 2661 } 2662 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2663 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2664 } 2665 break; 2666 case WifiManager.FORGET_NETWORK: 2667 sb.append(" "); 2668 sb.append(Integer.toString(msg.arg1)); 2669 sb.append(" "); 2670 sb.append(Integer.toString(msg.arg2)); 2671 if (lastForgetConfigurationAttempt != null) { 2672 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2673 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2674 if (lastForgetConfigurationAttempt.hiddenSSID) { 2675 sb.append(" hidden"); 2676 } 2677 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2678 sb.append(" hasPSK"); 2679 } 2680 if (lastForgetConfigurationAttempt.ephemeral) { 2681 sb.append(" ephemeral"); 2682 } 2683 if (lastForgetConfigurationAttempt.selfAdded) { 2684 sb.append(" selfAdded"); 2685 } 2686 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2687 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2688 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2689 } 2690 break; 2691 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2692 sb.append(" "); 2693 sb.append(Integer.toString(msg.arg1)); 2694 sb.append(" "); 2695 sb.append(Integer.toString(msg.arg2)); 2696 String bssid = (String) msg.obj; 2697 if (bssid != null && bssid.length() > 0) { 2698 sb.append(" "); 2699 sb.append(bssid); 2700 } 2701 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2702 sb.append(printTime()); 2703 break; 2704 case WifiMonitor.SCAN_RESULTS_EVENT: 2705 sb.append(" "); 2706 sb.append(Integer.toString(msg.arg1)); 2707 sb.append(" "); 2708 sb.append(Integer.toString(msg.arg2)); 2709 if (mScanResults != null) { 2710 sb.append(" found="); 2711 sb.append(mScanResults.size()); 2712 } 2713 sb.append(" known=").append(mNumScanResultsKnown); 2714 sb.append(" got=").append(mNumScanResultsReturned); 2715 if (lastScanDuration != 0) { 2716 sb.append(" dur:").append(lastScanDuration); 2717 } 2718 if (mOnTime != 0) { 2719 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2720 sb.append(",").append(mOnTime); 2721 } 2722 if (mTxTime != 0) { 2723 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2724 sb.append(",").append(mTxTime); 2725 } 2726 if (mRxTime != 0) { 2727 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2728 sb.append(",").append(mRxTime); 2729 } 2730 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2731 sb.append(String.format(" con=%d", mConnectionRequests)); 2732 key = mWifiConfigStore.getLastSelectedConfiguration(); 2733 if (key != null) { 2734 sb.append(" last=").append(key); 2735 } 2736 break; 2737 case WifiMonitor.SCAN_FAILED_EVENT: 2738 break; 2739 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2740 sb.append(" "); 2741 sb.append(Integer.toString(msg.arg1)); 2742 sb.append(" "); 2743 sb.append(Integer.toString(msg.arg2)); 2744 sb.append(" ").append(mLastBssid); 2745 sb.append(" nid=").append(mLastNetworkId); 2746 config = getCurrentWifiConfiguration(); 2747 if (config != null) { 2748 sb.append(" ").append(config.configKey()); 2749 } 2750 sb.append(printTime()); 2751 key = mWifiConfigStore.getLastSelectedConfiguration(); 2752 if (key != null) { 2753 sb.append(" last=").append(key); 2754 } 2755 break; 2756 case CMD_TARGET_BSSID: 2757 case CMD_ASSOCIATED_BSSID: 2758 sb.append(" "); 2759 sb.append(Integer.toString(msg.arg1)); 2760 sb.append(" "); 2761 sb.append(Integer.toString(msg.arg2)); 2762 if (msg.obj != null) { 2763 sb.append(" BSSID=").append((String) msg.obj); 2764 } 2765 if (mTargetRoamBSSID != null) { 2766 sb.append(" Target=").append(mTargetRoamBSSID); 2767 } 2768 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2769 sb.append(printTime()); 2770 break; 2771 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2772 if (msg.obj != null) { 2773 sb.append(" ").append((String) msg.obj); 2774 } 2775 sb.append(" nid=").append(msg.arg1); 2776 sb.append(" reason=").append(msg.arg2); 2777 if (mLastBssid != null) { 2778 sb.append(" lastbssid=").append(mLastBssid); 2779 } 2780 if (mWifiInfo.getFrequency() != -1) { 2781 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2782 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2783 } 2784 if (linkDebouncing) { 2785 sb.append(" debounce"); 2786 } 2787 sb.append(printTime()); 2788 break; 2789 case WifiMonitor.SSID_TEMP_DISABLED: 2790 case WifiMonitor.SSID_REENABLED: 2791 sb.append(" nid=").append(msg.arg1); 2792 if (msg.obj != null) { 2793 sb.append(" ").append((String) msg.obj); 2794 } 2795 config = getCurrentWifiConfiguration(); 2796 if (config != null) { 2797 sb.append(" cur=").append(config.configKey()); 2798 sb.append(" ajst=").append(config.autoJoinStatus); 2799 if (config.selfAdded) { 2800 sb.append(" selfAdded"); 2801 } 2802 if (config.status != 0) { 2803 sb.append(" st=").append(config.status); 2804 sb.append(" rs=").append(config.disableReason); 2805 } 2806 if (config.lastConnected != 0) { 2807 now = System.currentTimeMillis(); 2808 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2809 } 2810 if (mLastBssid != null) { 2811 sb.append(" lastbssid=").append(mLastBssid); 2812 } 2813 if (mWifiInfo.getFrequency() != -1) { 2814 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2815 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2816 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2817 } 2818 } 2819 sb.append(printTime()); 2820 break; 2821 case CMD_RSSI_POLL: 2822 case CMD_UNWANTED_NETWORK: 2823 case WifiManager.RSSI_PKTCNT_FETCH: 2824 sb.append(" "); 2825 sb.append(Integer.toString(msg.arg1)); 2826 sb.append(" "); 2827 sb.append(Integer.toString(msg.arg2)); 2828 if (mWifiInfo.getSSID() != null) 2829 if (mWifiInfo.getSSID() != null) 2830 sb.append(" ").append(mWifiInfo.getSSID()); 2831 if (mWifiInfo.getBSSID() != null) 2832 sb.append(" ").append(mWifiInfo.getBSSID()); 2833 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2834 sb.append(" f=").append(mWifiInfo.getFrequency()); 2835 sb.append(" sc=").append(mWifiInfo.score); 2836 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2837 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2838 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2839 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2840 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2841 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2842 report = reportOnTime(); 2843 if (report != null) { 2844 sb.append(" ").append(report); 2845 } 2846 if (wifiScoringReport != null) { 2847 sb.append(wifiScoringReport); 2848 } 2849 if (mConnectedModeGScanOffloadStarted) { 2850 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2851 } else { 2852 sb.append(" offload-stopped"); 2853 } 2854 break; 2855 case CMD_AUTO_CONNECT: 2856 case WifiManager.CONNECT_NETWORK: 2857 sb.append(" "); 2858 sb.append(Integer.toString(msg.arg1)); 2859 sb.append(" "); 2860 sb.append(Integer.toString(msg.arg2)); 2861 config = (WifiConfiguration) msg.obj; 2862 if (config != null) { 2863 sb.append(" ").append(config.configKey()); 2864 if (config.visibility != null) { 2865 sb.append(" ").append(config.visibility.toString()); 2866 } 2867 } 2868 if (mTargetRoamBSSID != null) { 2869 sb.append(" ").append(mTargetRoamBSSID); 2870 } 2871 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2872 sb.append(printTime()); 2873 config = getCurrentWifiConfiguration(); 2874 if (config != null) { 2875 sb.append(config.configKey()); 2876 if (config.visibility != null) { 2877 sb.append(" ").append(config.visibility.toString()); 2878 } 2879 } 2880 break; 2881 case CMD_AUTO_ROAM: 2882 sb.append(" "); 2883 sb.append(Integer.toString(msg.arg1)); 2884 sb.append(" "); 2885 sb.append(Integer.toString(msg.arg2)); 2886 ScanResult result = (ScanResult) msg.obj; 2887 if (result != null) { 2888 now = System.currentTimeMillis(); 2889 sb.append(" bssid=").append(result.BSSID); 2890 sb.append(" rssi=").append(result.level); 2891 sb.append(" freq=").append(result.frequency); 2892 if (result.seen > 0 && result.seen < now) { 2893 sb.append(" seen=").append(now - result.seen); 2894 } else { 2895 // Somehow the timestamp for this scan result is inconsistent 2896 sb.append(" !seen=").append(result.seen); 2897 } 2898 } 2899 if (mTargetRoamBSSID != null) { 2900 sb.append(" ").append(mTargetRoamBSSID); 2901 } 2902 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2903 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2904 sb.append(printTime()); 2905 break; 2906 case CMD_ADD_OR_UPDATE_NETWORK: 2907 sb.append(" "); 2908 sb.append(Integer.toString(msg.arg1)); 2909 sb.append(" "); 2910 sb.append(Integer.toString(msg.arg2)); 2911 if (msg.obj != null) { 2912 config = (WifiConfiguration) msg.obj; 2913 sb.append(" ").append(config.configKey()); 2914 sb.append(" prio=").append(config.priority); 2915 sb.append(" status=").append(config.status); 2916 if (config.BSSID != null) { 2917 sb.append(" ").append(config.BSSID); 2918 } 2919 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2920 if (curConfig != null) { 2921 if (curConfig.configKey().equals(config.configKey())) { 2922 sb.append(" is current"); 2923 } else { 2924 sb.append(" current=").append(curConfig.configKey()); 2925 sb.append(" prio=").append(curConfig.priority); 2926 sb.append(" status=").append(curConfig.status); 2927 } 2928 } 2929 } 2930 break; 2931 case WifiManager.DISABLE_NETWORK: 2932 case CMD_ENABLE_NETWORK: 2933 sb.append(" "); 2934 sb.append(Integer.toString(msg.arg1)); 2935 sb.append(" "); 2936 sb.append(Integer.toString(msg.arg2)); 2937 key = mWifiConfigStore.getLastSelectedConfiguration(); 2938 if (key != null) { 2939 sb.append(" last=").append(key); 2940 } 2941 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2942 if (config != null && (key == null || !config.configKey().equals(key))) { 2943 sb.append(" target=").append(key); 2944 } 2945 break; 2946 case CMD_GET_CONFIGURED_NETWORKS: 2947 sb.append(" "); 2948 sb.append(Integer.toString(msg.arg1)); 2949 sb.append(" "); 2950 sb.append(Integer.toString(msg.arg2)); 2951 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2952 break; 2953 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2954 sb.append(" "); 2955 sb.append(Integer.toString(msg.arg1)); 2956 sb.append(" "); 2957 sb.append(Integer.toString(msg.arg2)); 2958 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2959 sb.append(",").append(mWifiInfo.txBad); 2960 sb.append(",").append(mWifiInfo.txRetries); 2961 break; 2962 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2963 sb.append(" "); 2964 sb.append(Integer.toString(msg.arg1)); 2965 sb.append(" "); 2966 sb.append(Integer.toString(msg.arg2)); 2967 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2968 sb.append(" OK "); 2969 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2970 sb.append(" FAIL "); 2971 } 2972 if (mLinkProperties != null) { 2973 if (mLinkProperties.hasIPv4Address()) { 2974 sb.append(" v4"); 2975 } 2976 if (mLinkProperties.hasGlobalIPv6Address()) { 2977 sb.append(" v6"); 2978 } 2979 if (mLinkProperties.hasIPv4DefaultRoute()) { 2980 sb.append(" v4r"); 2981 } 2982 if (mLinkProperties.hasIPv6DefaultRoute()) { 2983 sb.append(" v6r"); 2984 } 2985 if (mLinkProperties.hasIPv4DnsServer()) { 2986 sb.append(" v4dns"); 2987 } 2988 if (mLinkProperties.hasIPv6DnsServer()) { 2989 sb.append(" v6dns"); 2990 } 2991 } 2992 break; 2993 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2994 sb.append(" "); 2995 sb.append(Integer.toString(msg.arg1)); 2996 sb.append(" "); 2997 sb.append(Integer.toString(msg.arg2)); 2998 if (msg.obj != null) { 2999 NetworkInfo info = (NetworkInfo) msg.obj; 3000 NetworkInfo.State state = info.getState(); 3001 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3002 if (state != null) { 3003 sb.append(" st=").append(state); 3004 } 3005 if (detailedState != null) { 3006 sb.append("/").append(detailedState); 3007 } 3008 } 3009 break; 3010 case CMD_IP_CONFIGURATION_LOST: 3011 int count = -1; 3012 WifiConfiguration c = getCurrentWifiConfiguration(); 3013 if (c != null) count = c.numIpConfigFailures; 3014 sb.append(" "); 3015 sb.append(Integer.toString(msg.arg1)); 3016 sb.append(" "); 3017 sb.append(Integer.toString(msg.arg2)); 3018 sb.append(" failures: "); 3019 sb.append(Integer.toString(count)); 3020 sb.append("/"); 3021 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3022 if (mWifiInfo.getBSSID() != null) { 3023 sb.append(" ").append(mWifiInfo.getBSSID()); 3024 } 3025 if (c != null) { 3026 ScanDetailCache scanDetailCache = 3027 mWifiConfigStore.getScanDetailCache(c); 3028 if (scanDetailCache != null) { 3029 for (ScanDetail sd : scanDetailCache.values()) { 3030 ScanResult r = sd.getScanResult(); 3031 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3032 sb.append(" ipfail=").append(r.numIpConfigFailures); 3033 sb.append(",st=").append(r.autoJoinStatus); 3034 } 3035 } 3036 } 3037 sb.append(" -> ajst=").append(c.autoJoinStatus); 3038 sb.append(" ").append(c.disableReason); 3039 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3040 sb.append(",").append(mWifiInfo.txBad); 3041 sb.append(",").append(mWifiInfo.txRetries); 3042 } 3043 sb.append(printTime()); 3044 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3045 break; 3046 case CMD_UPDATE_LINKPROPERTIES: 3047 sb.append(" "); 3048 sb.append(Integer.toString(msg.arg1)); 3049 sb.append(" "); 3050 sb.append(Integer.toString(msg.arg2)); 3051 if (mLinkProperties != null) { 3052 if (mLinkProperties.hasIPv4Address()) { 3053 sb.append(" v4"); 3054 } 3055 if (mLinkProperties.hasGlobalIPv6Address()) { 3056 sb.append(" v6"); 3057 } 3058 if (mLinkProperties.hasIPv4DefaultRoute()) { 3059 sb.append(" v4r"); 3060 } 3061 if (mLinkProperties.hasIPv6DefaultRoute()) { 3062 sb.append(" v6r"); 3063 } 3064 if (mLinkProperties.hasIPv4DnsServer()) { 3065 sb.append(" v4dns"); 3066 } 3067 if (mLinkProperties.hasIPv6DnsServer()) { 3068 sb.append(" v6dns"); 3069 } 3070 } 3071 break; 3072 case CMD_IP_REACHABILITY_LOST: 3073 if (msg.obj != null) { 3074 sb.append(" ").append((String) msg.obj); 3075 } 3076 break; 3077 case CMD_SET_COUNTRY_CODE: 3078 sb.append(" "); 3079 sb.append(Integer.toString(msg.arg1)); 3080 sb.append(" "); 3081 sb.append(Integer.toString(msg.arg2)); 3082 if (msg.obj != null) { 3083 sb.append(" ").append((String) msg.obj); 3084 } 3085 break; 3086 case CMD_ROAM_WATCHDOG_TIMER: 3087 sb.append(" "); 3088 sb.append(Integer.toString(msg.arg1)); 3089 sb.append(" "); 3090 sb.append(Integer.toString(msg.arg2)); 3091 sb.append(" cur=").append(roamWatchdogCount); 3092 break; 3093 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3094 sb.append(" "); 3095 sb.append(Integer.toString(msg.arg1)); 3096 sb.append(" "); 3097 sb.append(Integer.toString(msg.arg2)); 3098 sb.append(" cur=").append(disconnectingWatchdogCount); 3099 break; 3100 default: 3101 sb.append(" "); 3102 sb.append(Integer.toString(msg.arg1)); 3103 sb.append(" "); 3104 sb.append(Integer.toString(msg.arg2)); 3105 break; 3106 } 3107 3108 return sb.toString(); 3109 } 3110 3111 private void stopPnoOffload() { 3112 3113 // clear the PNO list 3114 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3115 Log.e(TAG, "Failed to stop pno"); 3116 } 3117 3118 } 3119 3120 3121 private boolean configureSsidWhiteList() { 3122 3123 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3124 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3125 return true; 3126 } 3127 3128 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3129 loge("configureSsidWhiteList couldnt program SSID list, size " 3130 + mWhiteListedSsids.length); 3131 return false; 3132 } 3133 3134 loge("configureSsidWhiteList success"); 3135 return true; 3136 } 3137 3138 // In associated more, lazy roam will be looking for 5GHz roam candidate 3139 private boolean configureLazyRoam() { 3140 boolean status; 3141 if (!useHalBasedAutoJoinOffload()) return false; 3142 3143 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3144 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3145 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3146 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3147 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3148 params.A_band_max_boost = 65; 3149 params.lazy_roam_hysteresis = 25; 3150 params.alert_roam_rssi_trigger = -75; 3151 3152 if (DBG) { 3153 Log.e(TAG, "configureLazyRoam " + params.toString()); 3154 } 3155 3156 if (!WifiNative.setLazyRoam(true, params)) { 3157 3158 Log.e(TAG, "configureLazyRoam couldnt program params"); 3159 3160 return false; 3161 } 3162 if (DBG) { 3163 Log.e(TAG, "configureLazyRoam success"); 3164 } 3165 return true; 3166 } 3167 3168 // In associated more, lazy roam will be looking for 5GHz roam candidate 3169 private boolean stopLazyRoam() { 3170 boolean status; 3171 if (!useHalBasedAutoJoinOffload()) return false; 3172 if (DBG) { 3173 Log.e(TAG, "stopLazyRoam"); 3174 } 3175 return WifiNative.setLazyRoam(false, null); 3176 } 3177 3178 private boolean startGScanConnectedModeOffload(String reason) { 3179 if (DBG) { 3180 if (reason == null) { 3181 reason = ""; 3182 } 3183 loge("startGScanConnectedModeOffload " + reason); 3184 } 3185 stopGScan("startGScanConnectedModeOffload " + reason); 3186 if (!mScreenOn) return false; 3187 3188 if (USE_PAUSE_SCANS) { 3189 mWifiNative.pauseScan(); 3190 } 3191 mPnoEnabled = configurePno(); 3192 if (mPnoEnabled == false) { 3193 if (USE_PAUSE_SCANS) { 3194 mWifiNative.restartScan(); 3195 } 3196 return false; 3197 } 3198 mLazyRoamEnabled = configureLazyRoam(); 3199 if (mLazyRoamEnabled == false) { 3200 if (USE_PAUSE_SCANS) { 3201 mWifiNative.restartScan(); 3202 } 3203 return false; 3204 } 3205 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3206 configureSsidWhiteList(); 3207 } 3208 if (!startConnectedGScan(reason)) { 3209 if (USE_PAUSE_SCANS) { 3210 mWifiNative.restartScan(); 3211 } 3212 return false; 3213 } 3214 if (USE_PAUSE_SCANS) { 3215 mWifiNative.restartScan(); 3216 } 3217 mConnectedModeGScanOffloadStarted = true; 3218 if (DBG) { 3219 loge("startGScanConnectedModeOffload success"); 3220 } 3221 return true; 3222 } 3223 3224 private boolean startGScanDisconnectedModeOffload(String reason) { 3225 if (DBG) { 3226 loge("startGScanDisconnectedModeOffload " + reason); 3227 } 3228 stopGScan("startGScanDisconnectedModeOffload " + reason); 3229 if (USE_PAUSE_SCANS) { 3230 mWifiNative.pauseScan(); 3231 } 3232 mPnoEnabled = configurePno(); 3233 if (mPnoEnabled == false) { 3234 if (USE_PAUSE_SCANS) { 3235 mWifiNative.restartScan(); 3236 } 3237 return false; 3238 } 3239 if (!startDisconnectedGScan(reason)) { 3240 if (USE_PAUSE_SCANS) { 3241 mWifiNative.restartScan(); 3242 } 3243 return false; 3244 } 3245 if (USE_PAUSE_SCANS) { 3246 mWifiNative.restartScan(); 3247 } 3248 return true; 3249 } 3250 3251 private boolean configurePno() { 3252 if (!useHalBasedAutoJoinOffload()) return false; 3253 3254 if (mWifiScanner == null) { 3255 log("configurePno: mWifiScanner is null "); 3256 return true; 3257 } 3258 3259 List<WifiNative.WifiPnoNetwork> llist 3260 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3261 if (llist == null || llist.size() == 0) { 3262 stopPnoOffload(); 3263 log("configurePno: empty PNO list "); 3264 return true; 3265 } 3266 if (DBG) { 3267 log("configurePno: got llist size " + llist.size()); 3268 } 3269 3270 // first program the network we want to look for thru the pno API 3271 WifiNative.WifiPnoNetwork list[] 3272 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3273 3274 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3275 Log.e(TAG, "Failed to set pno, length = " + list.length); 3276 return false; 3277 } 3278 3279 if (true) { 3280 StringBuilder sb = new StringBuilder(); 3281 for (WifiNative.WifiPnoNetwork network : list) { 3282 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3283 sb.append(" flags="); 3284 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3285 sb.append("] "); 3286 3287 } 3288 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3289 } 3290 return true; 3291 } 3292 3293 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3294 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3295 3296 private boolean startConnectedGScan(String reason) { 3297 // send a scan background request so as to kick firmware 3298 // 5GHz roaming and autojoin 3299 // We do this only if screen is on 3300 WifiScanner.ScanSettings settings; 3301 3302 if (mPnoEnabled || mLazyRoamEnabled) { 3303 settings = new WifiScanner.ScanSettings(); 3304 settings.band = WifiScanner.WIFI_BAND_BOTH; 3305 long now = System.currentTimeMillis(); 3306 3307 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3308 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3309 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3310 } else { 3311 mGScanStartTimeMilli = now; 3312 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3313 // if we start offload with short interval, then reconfigure it after a given 3314 // duration of time so as to reduce the scan frequency 3315 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3316 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3317 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3318 (long)delay); 3319 mRestartAutoJoinOffloadCounter++; 3320 } 3321 mGScanPeriodMilli = settings.periodInMs; 3322 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3323 if (DBG) { 3324 log("startConnectedScan: settings band="+ settings.band 3325 + " period=" + settings.periodInMs); 3326 } 3327 3328 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3329 if (true) { 3330 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3331 } 3332 } 3333 return true; 3334 } 3335 3336 private boolean startDisconnectedGScan(String reason) { 3337 // send a scan background request so as to kick firmware 3338 // PNO 3339 // This is done in both screen On and screen Off modes 3340 WifiScanner.ScanSettings settings; 3341 3342 if (mWifiScanner == null) { 3343 log("startDisconnectedGScan: no wifi scanner"); 3344 return false; 3345 } 3346 3347 if (mPnoEnabled || mLazyRoamEnabled) { 3348 settings = new WifiScanner.ScanSettings(); 3349 settings.band = WifiScanner.WIFI_BAND_BOTH; 3350 long now = System.currentTimeMillis(); 3351 3352 3353 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3354 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3355 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3356 } else { 3357 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3358 mGScanStartTimeMilli = now; 3359 // if we start offload with short interval, then reconfigure it after a given 3360 // duration of time so as to reduce the scan frequency 3361 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3362 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3363 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3364 (long)delay); 3365 mRestartAutoJoinOffloadCounter++; 3366 } 3367 mGScanPeriodMilli = settings.periodInMs; 3368 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3369 if (DBG) { 3370 log("startDisconnectedScan: settings band="+ settings.band 3371 + " period=" + settings.periodInMs); 3372 } 3373 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3374 if (true) { 3375 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3376 } 3377 } 3378 return true; 3379 } 3380 3381 private boolean stopGScan(String reason) { 3382 mGScanStartTimeMilli = 0; 3383 mGScanPeriodMilli = 0; 3384 if (mWifiScanner != null) { 3385 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3386 } 3387 mConnectedModeGScanOffloadStarted = false; 3388 if (true) { 3389 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3390 } 3391 return true; 3392 } 3393 3394 private void handleScreenStateChanged(boolean screenOn) { 3395 mScreenOn = screenOn; 3396 if (PDBG) { 3397 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3398 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3399 + " state " + getCurrentState().getName() 3400 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3401 } 3402 enableRssiPolling(screenOn); 3403 if (screenOn) enableAllNetworks(); 3404 if (mUserWantsSuspendOpt.get()) { 3405 if (screenOn) { 3406 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3407 } else { 3408 // Allow 2s for suspend optimizations to be set 3409 mSuspendWakeLock.acquire(2000); 3410 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3411 } 3412 } 3413 mScreenBroadcastReceived.set(true); 3414 3415 getWifiLinkLayerStats(false); 3416 mOnTimeScreenStateChange = mOnTime; 3417 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3418 3419 cancelDelayedScan(); 3420 3421 if (screenOn) { 3422 if (mLegacyPnoEnabled) { 3423 enableBackgroundScan(false); 3424 } 3425 setScanAlarm(false); 3426 clearBlacklist(); 3427 3428 fullBandConnectedTimeIntervalMilli 3429 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3430 // In either Disconnectedstate or ConnectedState, 3431 // start the scan alarm so as to enable autojoin 3432 if (getCurrentState() == mConnectedState 3433 && allowFullBandScanAndAssociated()) { 3434 if (useHalBasedAutoJoinOffload()) { 3435 startGScanConnectedModeOffload("screenOnConnected"); 3436 } else { 3437 // Scan after 500ms 3438 startDelayedScan(500, null, null); 3439 } 3440 } else if (getCurrentState() == mDisconnectedState) { 3441 if (useHalBasedAutoJoinOffload()) { 3442 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3443 } else { 3444 // Scan after 500ms 3445 startDelayedScan(500, null, null); 3446 } 3447 } 3448 } else { 3449 if (getCurrentState() == mDisconnectedState) { 3450 // Screen Off and Disconnected and chipset doesn't support scan offload 3451 // => start scan alarm 3452 // Screen Off and Disconnected and chipset does support scan offload 3453 // => will use scan offload (i.e. background scan) 3454 if (useHalBasedAutoJoinOffload()) { 3455 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3456 } else { 3457 if (!mBackgroundScanSupported) { 3458 setScanAlarm(true); 3459 } else { 3460 if (!mIsScanOngoing) { 3461 enableBackgroundScan(true); 3462 } 3463 } 3464 } 3465 } else { 3466 if (mLegacyPnoEnabled) { 3467 enableBackgroundScan(false); 3468 } 3469 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3470 } 3471 } 3472 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3473 3474 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3475 } 3476 3477 private void checkAndSetConnectivityInstance() { 3478 if (mCm == null) { 3479 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3480 } 3481 } 3482 3483 private boolean startTethering(ArrayList<String> available) { 3484 3485 boolean wifiAvailable = false; 3486 3487 checkAndSetConnectivityInstance(); 3488 3489 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3490 3491 for (String intf : available) { 3492 for (String regex : wifiRegexs) { 3493 if (intf.matches(regex)) { 3494 3495 InterfaceConfiguration ifcg = null; 3496 try { 3497 ifcg = mNwService.getInterfaceConfig(intf); 3498 if (ifcg != null) { 3499 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3500 ifcg.setLinkAddress(new LinkAddress( 3501 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3502 ifcg.setInterfaceUp(); 3503 3504 mNwService.setInterfaceConfig(intf, ifcg); 3505 } 3506 } catch (Exception e) { 3507 loge("Error configuring interface " + intf + ", :" + e); 3508 return false; 3509 } 3510 3511 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3512 loge("Error tethering on " + intf); 3513 return false; 3514 } 3515 mTetherInterfaceName = intf; 3516 return true; 3517 } 3518 } 3519 } 3520 // We found no interfaces to tether 3521 return false; 3522 } 3523 3524 private void stopTethering() { 3525 3526 checkAndSetConnectivityInstance(); 3527 3528 /* Clear the interface config to allow dhcp correctly configure new 3529 ip settings */ 3530 InterfaceConfiguration ifcg = null; 3531 try { 3532 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3533 if (ifcg != null) { 3534 ifcg.setLinkAddress( 3535 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3536 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3537 } 3538 } catch (Exception e) { 3539 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3540 } 3541 3542 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3543 loge("Untether initiate failed!"); 3544 } 3545 } 3546 3547 private boolean isWifiTethered(ArrayList<String> active) { 3548 3549 checkAndSetConnectivityInstance(); 3550 3551 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3552 for (String intf : active) { 3553 for (String regex : wifiRegexs) { 3554 if (intf.matches(regex)) { 3555 return true; 3556 } 3557 } 3558 } 3559 // We found no interfaces that are tethered 3560 return false; 3561 } 3562 3563 /** 3564 * Set the country code from the system setting value, if any. 3565 */ 3566 private void setCountryCode() { 3567 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3568 Settings.Global.WIFI_COUNTRY_CODE); 3569 if (countryCode != null && !countryCode.isEmpty()) { 3570 setCountryCode(countryCode, false); 3571 } else { 3572 //use driver default 3573 } 3574 } 3575 3576 /** 3577 * Set the frequency band from the system setting value, if any. 3578 */ 3579 private void setFrequencyBand() { 3580 int band = Settings.Global.getInt(mContext.getContentResolver(), 3581 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3582 setFrequencyBand(band, false); 3583 } 3584 3585 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3586 if (DBG) { 3587 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3588 + " -want " + mUserWantsSuspendOpt.get() 3589 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3590 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3591 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3592 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3593 } 3594 //mWifiNative.setSuspendOptimizations(enabled); 3595 3596 if (enabled) { 3597 mSuspendOptNeedsDisabled &= ~reason; 3598 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3599 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3600 if (DBG) { 3601 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3602 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3603 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3604 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3605 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3606 } 3607 mWifiNative.setSuspendOptimizations(true); 3608 } 3609 } else { 3610 mSuspendOptNeedsDisabled |= reason; 3611 mWifiNative.setSuspendOptimizations(false); 3612 } 3613 } 3614 3615 private void setSuspendOptimizations(int reason, boolean enabled) { 3616 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3617 if (enabled) { 3618 mSuspendOptNeedsDisabled &= ~reason; 3619 } else { 3620 mSuspendOptNeedsDisabled |= reason; 3621 } 3622 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3623 } 3624 3625 private void setWifiState(int wifiState) { 3626 final int previousWifiState = mWifiState.get(); 3627 3628 try { 3629 if (wifiState == WIFI_STATE_ENABLED) { 3630 mBatteryStats.noteWifiOn(); 3631 } else if (wifiState == WIFI_STATE_DISABLED) { 3632 mBatteryStats.noteWifiOff(); 3633 } 3634 } catch (RemoteException e) { 3635 loge("Failed to note battery stats in wifi"); 3636 } 3637 3638 mWifiState.set(wifiState); 3639 3640 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3641 3642 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3643 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3644 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3645 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3646 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3647 } 3648 3649 private void setWifiApState(int wifiApState) { 3650 final int previousWifiApState = mWifiApState.get(); 3651 3652 try { 3653 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3654 mBatteryStats.noteWifiOn(); 3655 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3656 mBatteryStats.noteWifiOff(); 3657 } 3658 } catch (RemoteException e) { 3659 loge("Failed to note battery stats in wifi"); 3660 } 3661 3662 // Update state 3663 mWifiApState.set(wifiApState); 3664 3665 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3666 3667 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3668 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3669 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3670 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3671 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3672 } 3673 3674 /* 3675 void ageOutScanResults(int age) { 3676 synchronized(mScanResultCache) { 3677 // Trim mScanResults, which prevent WifiStateMachine to return 3678 // obsolete scan results to queriers 3679 long now = System.CurrentTimeMillis(); 3680 for (int i = 0; i < mScanResults.size(); i++) { 3681 ScanResult result = mScanResults.get(i); 3682 if ((result.seen > now || (now - result.seen) > age)) { 3683 mScanResults.remove(i); 3684 } 3685 } 3686 } 3687 }*/ 3688 3689 private static final String IE_STR = "ie="; 3690 private static final String ID_STR = "id="; 3691 private static final String BSSID_STR = "bssid="; 3692 private static final String FREQ_STR = "freq="; 3693 private static final String LEVEL_STR = "level="; 3694 private static final String TSF_STR = "tsf="; 3695 private static final String FLAGS_STR = "flags="; 3696 private static final String SSID_STR = "ssid="; 3697 private static final String DELIMITER_STR = "===="; 3698 private static final String END_STR = "####"; 3699 3700 int emptyScanResultCount = 0; 3701 3702 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3703 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3704 3705 /** 3706 * Format: 3707 * <p/> 3708 * id=1 3709 * bssid=68:7f:76:d7:1a:6e 3710 * freq=2412 3711 * level=-44 3712 * tsf=1344626243700342 3713 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3714 * ssid=zfdy 3715 * ==== 3716 * id=2 3717 * bssid=68:5f:74:d7:1a:6f 3718 * freq=5180 3719 * level=-73 3720 * tsf=1344626243700373 3721 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3722 * ssid=zuby 3723 * ==== 3724 */ 3725 private void setScanResults() { 3726 mNumScanResultsKnown = 0; 3727 mNumScanResultsReturned = 0; 3728 String bssid = ""; 3729 int level = 0; 3730 int freq = 0; 3731 long tsf = 0; 3732 String flags = ""; 3733 WifiSsid wifiSsid = null; 3734 String scanResults; 3735 String tmpResults; 3736 StringBuffer scanResultsBuf = new StringBuffer(); 3737 int sid = 0; 3738 3739 while (true) { 3740 tmpResults = mWifiNative.scanResults(sid); 3741 if (TextUtils.isEmpty(tmpResults)) break; 3742 scanResultsBuf.append(tmpResults); 3743 scanResultsBuf.append("\n"); 3744 String[] lines = tmpResults.split("\n"); 3745 sid = -1; 3746 for (int i = lines.length - 1; i >= 0; i--) { 3747 if (lines[i].startsWith(END_STR)) { 3748 break; 3749 } else if (lines[i].startsWith(ID_STR)) { 3750 try { 3751 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3752 } catch (NumberFormatException e) { 3753 // Nothing to do 3754 } 3755 break; 3756 } 3757 } 3758 if (sid == -1) break; 3759 } 3760 3761 // Age out scan results, we return all scan results found in the last 12 seconds, 3762 // and NOT all scan results since last scan. 3763 // ageOutScanResults(12000); 3764 3765 scanResults = scanResultsBuf.toString(); 3766 if (TextUtils.isEmpty(scanResults)) { 3767 emptyScanResultCount++; 3768 if (emptyScanResultCount > 10) { 3769 // If we got too many empty scan results, the current scan cache is stale, 3770 // hence clear it. 3771 mScanResults = new ArrayList<>(); 3772 } 3773 return; 3774 } 3775 3776 emptyScanResultCount = 0; 3777 3778 // note that all these splits and substrings keep references to the original 3779 // huge string buffer while the amount we really want is generally pretty small 3780 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3781 synchronized (mScanResultCache) { 3782 mScanResults = new ArrayList<>(); 3783 String[] lines = scanResults.split("\n"); 3784 final int bssidStrLen = BSSID_STR.length(); 3785 final int flagLen = FLAGS_STR.length(); 3786 String infoElements = null; 3787 List<String> anqpLines = null; 3788 3789 for (String line : lines) { 3790 if (line.startsWith(BSSID_STR)) { 3791 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3792 } else if (line.startsWith(FREQ_STR)) { 3793 try { 3794 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3795 } catch (NumberFormatException e) { 3796 freq = 0; 3797 } 3798 } else if (line.startsWith(LEVEL_STR)) { 3799 try { 3800 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3801 /* some implementations avoid negative values by adding 256 3802 * so we need to adjust for that here. 3803 */ 3804 if (level > 0) level -= 256; 3805 } catch (NumberFormatException e) { 3806 level = 0; 3807 } 3808 } else if (line.startsWith(TSF_STR)) { 3809 try { 3810 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3811 } catch (NumberFormatException e) { 3812 tsf = 0; 3813 } 3814 } else if (line.startsWith(FLAGS_STR)) { 3815 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3816 } else if (line.startsWith(SSID_STR)) { 3817 wifiSsid = WifiSsid.createFromAsciiEncoded( 3818 line.substring(SSID_STR.length())); 3819 } else if (line.startsWith(IE_STR)) { 3820 infoElements = line; 3821 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3822 if (anqpLines == null) { 3823 anqpLines = new ArrayList<>(); 3824 } 3825 anqpLines.add(line); 3826 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3827 if (bssid != null) { 3828 try { 3829 NetworkDetail networkDetail = 3830 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3831 3832 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3833 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3834 Log.d(Utils.hs2LogTag(getClass()), 3835 String.format("Inconsistent SSID on BSSID '%s':" + 3836 " '%s' vs '%s': %s", 3837 bssid, xssid, networkDetail.getSSID(), infoElements)); 3838 } 3839 3840 if (networkDetail.hasInterworking()) { 3841 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3842 } 3843 3844 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3845 if (scanDetail != null) { 3846 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3847 flags, freq, tsf); 3848 } else { 3849 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3850 flags, level, freq, tsf); 3851 mScanResultCache.put(networkDetail, scanDetail); 3852 } 3853 3854 mNumScanResultsReturned++; // Keep track of how many scan results we got 3855 // as part of this scan's processing 3856 mScanResults.add(scanDetail); 3857 } catch (IllegalArgumentException iae) { 3858 Log.d(TAG, "Failed to parse information elements: " + iae); 3859 } 3860 } 3861 bssid = null; 3862 level = 0; 3863 freq = 0; 3864 tsf = 0; 3865 flags = ""; 3866 wifiSsid = null; 3867 infoElements = null; 3868 anqpLines = null; 3869 } 3870 } 3871 } 3872 3873 boolean attemptAutoJoin = true; 3874 SupplicantState state = mWifiInfo.getSupplicantState(); 3875 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3876 if (getCurrentState() == mRoamingState 3877 || getCurrentState() == mObtainingIpState 3878 || getCurrentState() == mScanModeState 3879 || getCurrentState() == mDisconnectingState 3880 || (getCurrentState() == mConnectedState 3881 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3882 || linkDebouncing 3883 || state == SupplicantState.ASSOCIATING 3884 || state == SupplicantState.AUTHENTICATING 3885 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3886 || state == SupplicantState.GROUP_HANDSHAKE 3887 || (/* keep autojoin enabled if user has manually selected a wifi network, 3888 so as to make sure we reliably remain connected to this network */ 3889 mConnectionRequests == 0 && selection == null)) { 3890 // Dont attempt auto-joining again while we are already attempting to join 3891 // and/or obtaining Ip address 3892 attemptAutoJoin = false; 3893 } 3894 if (DBG) { 3895 if (selection == null) { 3896 selection = "<none>"; 3897 } 3898 loge("wifi setScanResults state" + getCurrentState() 3899 + " sup_state=" + state 3900 + " debouncing=" + linkDebouncing 3901 + " mConnectionRequests=" + mConnectionRequests 3902 + " selection=" + selection); 3903 } 3904 if (attemptAutoJoin) { 3905 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3906 } 3907 // Loose last selected configuration if we have been disconnected for 5 minutes 3908 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3909 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3910 } 3911 3912 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3913 synchronized (mScanResultCache) { 3914 // AutoJoincontroller will directly acces the scan result list and update it with 3915 // ScanResult status 3916 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3917 } 3918 } 3919 if (linkDebouncing) { 3920 // If debouncing, we dont re-select a SSID or BSSID hence 3921 // there is no need to call the network selection code 3922 // in WifiAutoJoinController, instead, 3923 // just try to reconnect to the same SSID by triggering a roam 3924 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3925 } 3926 } 3927 3928 /* 3929 * Fetch RSSI, linkspeed, and frequency on current connection 3930 */ 3931 private void fetchRssiLinkSpeedAndFrequencyNative() { 3932 int newRssi = -1; 3933 int newLinkSpeed = -1; 3934 int newFrequency = -1; 3935 3936 String signalPoll = mWifiNative.signalPoll(); 3937 3938 if (signalPoll != null) { 3939 String[] lines = signalPoll.split("\n"); 3940 for (String line : lines) { 3941 String[] prop = line.split("="); 3942 if (prop.length < 2) continue; 3943 try { 3944 if (prop[0].equals("RSSI")) { 3945 newRssi = Integer.parseInt(prop[1]); 3946 } else if (prop[0].equals("LINKSPEED")) { 3947 newLinkSpeed = Integer.parseInt(prop[1]); 3948 } else if (prop[0].equals("FREQUENCY")) { 3949 newFrequency = Integer.parseInt(prop[1]); 3950 } 3951 } catch (NumberFormatException e) { 3952 //Ignore, defaults on rssi and linkspeed are assigned 3953 } 3954 } 3955 } 3956 3957 if (PDBG) { 3958 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3959 + Integer.toString(newRssi) + " linkspeed=" 3960 + Integer.toString(newLinkSpeed)); 3961 } 3962 3963 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3964 // screen out invalid values 3965 /* some implementations avoid negative values by adding 256 3966 * so we need to adjust for that here. 3967 */ 3968 if (newRssi > 0) newRssi -= 256; 3969 mWifiInfo.setRssi(newRssi); 3970 /* 3971 * Rather then sending the raw RSSI out every time it 3972 * changes, we precalculate the signal level that would 3973 * be displayed in the status bar, and only send the 3974 * broadcast if that much more coarse-grained number 3975 * changes. This cuts down greatly on the number of 3976 * broadcasts, at the cost of not informing others 3977 * interested in RSSI of all the changes in signal 3978 * level. 3979 */ 3980 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3981 if (newSignalLevel != mLastSignalLevel) { 3982 sendRssiChangeBroadcast(newRssi); 3983 } 3984 mLastSignalLevel = newSignalLevel; 3985 } else { 3986 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3987 } 3988 3989 if (newLinkSpeed != -1) { 3990 mWifiInfo.setLinkSpeed(newLinkSpeed); 3991 } 3992 if (newFrequency > 0) { 3993 if (ScanResult.is5GHz(newFrequency)) { 3994 mWifiConnectionStatistics.num5GhzConnected++; 3995 } 3996 if (ScanResult.is24GHz(newFrequency)) { 3997 mWifiConnectionStatistics.num24GhzConnected++; 3998 } 3999 mWifiInfo.setFrequency(newFrequency); 4000 } 4001 mWifiConfigStore.updateConfiguration(mWifiInfo); 4002 } 4003 4004 /** 4005 * Determine if we need to switch network: 4006 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4007 * - match the uregncy of the switch versus the packet usage at the interface 4008 */ 4009 boolean shouldSwitchNetwork(int networkDelta) { 4010 int delta; 4011 if (networkDelta <= 0) { 4012 return false; 4013 } 4014 delta = networkDelta; 4015 if (mWifiInfo != null) { 4016 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 4017 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4018 // If AutoJoin while associated is not enabled, 4019 // we should never switch network when already associated 4020 delta = -1000; 4021 } else { 4022 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4023 // TODO: at the interface. We should also discriminate between ucast and mcast, 4024 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4025 // TODO: broadcasts 4026 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4027 delta -= 999; 4028 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4029 delta -= 6; 4030 } 4031 loge("WifiStateMachine shouldSwitchNetwork " 4032 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4033 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4034 + " delta " + networkDelta + " -> " + delta); 4035 } 4036 } else { 4037 loge("WifiStateMachine shouldSwitchNetwork " 4038 + " delta " + networkDelta + " -> " + delta); 4039 } 4040 if (delta > 0) { 4041 return true; 4042 } 4043 return false; 4044 } 4045 4046 // Polling has completed, hence we wont have a score anymore 4047 private void cleanWifiScore() { 4048 mWifiInfo.txBadRate = 0; 4049 mWifiInfo.txSuccessRate = 0; 4050 mWifiInfo.txRetriesRate = 0; 4051 mWifiInfo.rxSuccessRate = 0; 4052 } 4053 4054 int mBadLinkspeedcount = 0; 4055 4056 // For debug, provide information about the last scoring operation 4057 String wifiScoringReport = null; 4058 4059 private void calculateWifiScore(WifiLinkLayerStats stats) { 4060 StringBuilder sb = new StringBuilder(); 4061 4062 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4063 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4064 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4065 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4066 < mWifiConfigStore.badLinkSpeed5); 4067 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4068 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4069 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4070 >= mWifiConfigStore.goodLinkSpeed5); 4071 4072 if (isBadLinkspeed) { 4073 if (mBadLinkspeedcount < 6) 4074 mBadLinkspeedcount++; 4075 } else { 4076 if (mBadLinkspeedcount > 0) 4077 mBadLinkspeedcount--; 4078 } 4079 4080 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4081 if (isGoodLinkspeed) sb.append(" gl"); 4082 4083 /** 4084 * We want to make sure that we use the 24GHz RSSI thresholds if 4085 * there are 2.4GHz scan results 4086 * otherwise we end up lowering the score based on 5GHz values 4087 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4088 * We also might unblacklist the configuation based on 2.4GHz 4089 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4090 */ 4091 boolean use24Thresholds = false; 4092 boolean homeNetworkBoost = false; 4093 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4094 ScanDetailCache scanDetailCache = 4095 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4096 if (currentConfiguration != null && scanDetailCache != null) { 4097 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4098 if (currentConfiguration.visibility != null) { 4099 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4100 && currentConfiguration.visibility.rssi24 4101 >= (currentConfiguration.visibility.rssi5 - 2)) { 4102 use24Thresholds = true; 4103 } 4104 } 4105 if (scanDetailCache.size() <= 6 4106 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4107 && currentConfiguration.allowedKeyManagement. 4108 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4109 // A PSK network with less than 6 known BSSIDs 4110 // This is most likely a home network and thus we want to stick to wifi more 4111 homeNetworkBoost = true; 4112 } 4113 } 4114 if (homeNetworkBoost) sb.append(" hn"); 4115 if (use24Thresholds) sb.append(" u24"); 4116 4117 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4118 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4119 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4120 4121 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4122 4123 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4124 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4125 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4126 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4127 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4128 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4129 4130 if (isBadRSSI) sb.append(" br"); 4131 if (isLowRSSI) sb.append(" lr"); 4132 if (isHighRSSI) sb.append(" hr"); 4133 4134 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4135 if (currentConfiguration != null && 4136 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4137 if (isBadRSSI) { 4138 currentConfiguration.numTicksAtBadRSSI++; 4139 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4140 // We remained associated for a compound amount of time while passing 4141 // traffic, hence loose the corresponding user triggered disabled stats 4142 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4143 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4144 } 4145 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4146 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4147 } 4148 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4149 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4150 } 4151 currentConfiguration.numTicksAtBadRSSI = 0; 4152 } 4153 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4154 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4155 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4156 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4157 score = score - 5; 4158 penalizedDueToUserTriggeredDisconnect = 1; 4159 sb.append(" p1"); 4160 } 4161 } else if (isLowRSSI) { 4162 currentConfiguration.numTicksAtLowRSSI++; 4163 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4164 // We remained associated for a compound amount of time while passing 4165 // traffic, hence loose the corresponding user triggered disabled stats 4166 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4167 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4168 } 4169 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4170 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4171 } 4172 currentConfiguration.numTicksAtLowRSSI = 0; 4173 } 4174 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4175 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4176 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4177 score = score - 5; 4178 penalizedDueToUserTriggeredDisconnect = 2; 4179 sb.append(" p2"); 4180 } 4181 } else if (!isHighRSSI) { 4182 currentConfiguration.numTicksAtNotHighRSSI++; 4183 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4184 // We remained associated for a compound amount of time while passing 4185 // traffic, hence loose the corresponding user triggered disabled stats 4186 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4187 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4188 } 4189 currentConfiguration.numTicksAtNotHighRSSI = 0; 4190 } 4191 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4192 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4193 score = score - 5; 4194 penalizedDueToUserTriggeredDisconnect = 3; 4195 sb.append(" p3"); 4196 } 4197 } 4198 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4199 currentConfiguration.numTicksAtLowRSSI, 4200 currentConfiguration.numTicksAtNotHighRSSI)); 4201 } 4202 4203 if (PDBG) { 4204 String rssiStatus = ""; 4205 if (isBadRSSI) rssiStatus += " badRSSI "; 4206 else if (isHighRSSI) rssiStatus += " highRSSI "; 4207 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4208 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4209 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4210 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4211 + " score=" + Integer.toString(mWifiInfo.score) 4212 + rssiStatus 4213 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4214 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4215 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4216 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4217 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4218 } 4219 4220 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4221 && (isBadRSSI || isLowRSSI)) { 4222 // Link is stuck 4223 if (mWifiInfo.linkStuckCount < 5) 4224 mWifiInfo.linkStuckCount += 1; 4225 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4226 if (PDBG) loge(" bad link -> stuck count =" 4227 + Integer.toString(mWifiInfo.linkStuckCount)); 4228 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 4229 if (mWifiInfo.linkStuckCount > 0) 4230 mWifiInfo.linkStuckCount -= 1; 4231 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4232 if (PDBG) loge(" good link -> stuck count =" 4233 + Integer.toString(mWifiInfo.linkStuckCount)); 4234 } 4235 4236 sb.append(String.format(" [%d", score)); 4237 4238 if (mWifiInfo.linkStuckCount > 1) { 4239 // Once link gets stuck for more than 3 seconds, start reducing the score 4240 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4241 } 4242 sb.append(String.format(",%d", score)); 4243 4244 if (isBadLinkspeed) { 4245 score -= 4; 4246 if (PDBG) { 4247 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4248 + " score=" + Integer.toString(score)); 4249 } 4250 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4251 score += 4; // So as bad rssi alone dont kill us 4252 } 4253 sb.append(String.format(",%d", score)); 4254 4255 if (isBadRSSI) { 4256 if (mWifiInfo.badRssiCount < 7) 4257 mWifiInfo.badRssiCount += 1; 4258 } else if (isLowRSSI) { 4259 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4260 if (mWifiInfo.badRssiCount > 0) { 4261 // Decrement bad Rssi count 4262 mWifiInfo.badRssiCount -= 1; 4263 } 4264 } else { 4265 mWifiInfo.badRssiCount = 0; 4266 mWifiInfo.lowRssiCount = 0; 4267 } 4268 4269 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4270 sb.append(String.format(",%d", score)); 4271 4272 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4273 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4274 + " --> score " + Integer.toString(score)); 4275 4276 4277 if (isHighRSSI) { 4278 score += 5; 4279 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 4280 } 4281 sb.append(String.format(",%d]", score)); 4282 4283 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4284 4285 //sanitize boundaries 4286 if (score > NetworkAgent.WIFI_BASE_SCORE) 4287 score = NetworkAgent.WIFI_BASE_SCORE; 4288 if (score < 0) 4289 score = 0; 4290 4291 //report score 4292 if (score != mWifiInfo.score) { 4293 if (DBG) { 4294 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4295 } 4296 mWifiInfo.score = score; 4297 if (mNetworkAgent != null) { 4298 mNetworkAgent.sendNetworkScore(score); 4299 } 4300 } 4301 wifiScoringReport = sb.toString(); 4302 } 4303 4304 public double getTxPacketRate() { 4305 if (mWifiInfo != null) { 4306 return mWifiInfo.txSuccessRate; 4307 } 4308 return -1; 4309 } 4310 4311 public double getRxPacketRate() { 4312 if (mWifiInfo != null) { 4313 return mWifiInfo.rxSuccessRate; 4314 } 4315 return -1; 4316 } 4317 4318 /** 4319 * Fetch TX packet counters on current connection 4320 */ 4321 private void fetchPktcntNative(RssiPacketCountInfo info) { 4322 String pktcntPoll = mWifiNative.pktcntPoll(); 4323 4324 if (pktcntPoll != null) { 4325 String[] lines = pktcntPoll.split("\n"); 4326 for (String line : lines) { 4327 String[] prop = line.split("="); 4328 if (prop.length < 2) continue; 4329 try { 4330 if (prop[0].equals("TXGOOD")) { 4331 info.txgood = Integer.parseInt(prop[1]); 4332 } else if (prop[0].equals("TXBAD")) { 4333 info.txbad = Integer.parseInt(prop[1]); 4334 } 4335 } catch (NumberFormatException e) { 4336 // Ignore 4337 } 4338 } 4339 } 4340 } 4341 4342 private boolean clearIPv4Address(String iface) { 4343 try { 4344 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4345 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4346 mNwService.setInterfaceConfig(iface, ifcg); 4347 return true; 4348 } catch (RemoteException e) { 4349 return false; 4350 } 4351 } 4352 4353 private boolean isProvisioned(LinkProperties lp) { 4354 return lp.isProvisioned() || 4355 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4356 } 4357 4358 /** 4359 * Creates a new LinkProperties object by merging information from various sources. 4360 * <p/> 4361 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4362 * netlink, static configuration, ...). When one of these sources of information has updated 4363 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4364 * information that came from other sources. Instead, when one of those sources has new 4365 * information, we update the object that tracks the information from that source and then 4366 * call this method to integrate the change into a new LinkProperties object for subsequent 4367 * comparison with mLinkProperties. 4368 * <p/> 4369 * The information used to build LinkProperties is currently obtained as follows: 4370 * - Interface name: set in the constructor. 4371 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4372 * - IPv4 routes, DNS servers, and domains: DHCP. 4373 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4374 * - HTTP proxy: the wifi config store. 4375 */ 4376 private LinkProperties makeLinkProperties() { 4377 LinkProperties newLp = new LinkProperties(); 4378 4379 // Interface name, proxy, and TCP buffer sizes are locally configured. 4380 newLp.setInterfaceName(mInterfaceName); 4381 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4382 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4383 newLp.setTcpBufferSizes(mTcpBufferSizes); 4384 } 4385 4386 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4387 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4388 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4389 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4390 newLp.addRoute(route); 4391 } 4392 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4393 newLp.addDnsServer(dns); 4394 } 4395 4396 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4397 synchronized (mDhcpResultsLock) { 4398 // Even when we're using static configuration, we don't need to look at the config 4399 // store, because static IP configuration also populates mDhcpResults. 4400 if ((mDhcpResults != null)) { 4401 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4402 newLp.addRoute(route); 4403 } 4404 for (InetAddress dns : mDhcpResults.dnsServers) { 4405 newLp.addDnsServer(dns); 4406 } 4407 newLp.setDomains(mDhcpResults.domains); 4408 } 4409 } 4410 4411 return newLp; 4412 } 4413 4414 private void updateLinkProperties(int reason) { 4415 LinkProperties newLp = makeLinkProperties(); 4416 4417 final boolean linkChanged = !newLp.equals(mLinkProperties); 4418 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4419 final boolean isProvisioned = isProvisioned(newLp); 4420 final boolean lostIPv4Provisioning = 4421 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4422 final DetailedState detailedState = getNetworkDetailedState(); 4423 4424 if (linkChanged) { 4425 if (DBG) { 4426 log("Link configuration changed for netId: " + mLastNetworkId 4427 + " old: " + mLinkProperties + " new: " + newLp); 4428 } 4429 mLinkProperties = newLp; 4430 if (mIpReachabilityMonitor != null) { 4431 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4432 } 4433 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4434 } 4435 4436 if (DBG) { 4437 StringBuilder sb = new StringBuilder(); 4438 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4439 sb.append(" state: " + detailedState); 4440 sb.append(" reason: " + smToString(reason)); 4441 4442 if (mLinkProperties != null) { 4443 if (mLinkProperties.hasIPv4Address()) { 4444 sb.append(" v4"); 4445 } 4446 if (mLinkProperties.hasGlobalIPv6Address()) { 4447 sb.append(" v6"); 4448 } 4449 if (mLinkProperties.hasIPv4DefaultRoute()) { 4450 sb.append(" v4r"); 4451 } 4452 if (mLinkProperties.hasIPv6DefaultRoute()) { 4453 sb.append(" v6r"); 4454 } 4455 if (mLinkProperties.hasIPv4DnsServer()) { 4456 sb.append(" v4dns"); 4457 } 4458 if (mLinkProperties.hasIPv6DnsServer()) { 4459 sb.append(" v6dns"); 4460 } 4461 if (isProvisioned) { 4462 sb.append(" isprov"); 4463 } 4464 } 4465 loge(sb.toString()); 4466 } 4467 4468 // If we just configured or lost IP configuration, do the needful. 4469 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4470 // here because those should only be called if we're attempting to connect or already 4471 // connected, whereas updateLinkProperties can be called at any time. 4472 switch (reason) { 4473 case DhcpStateMachine.DHCP_SUCCESS: 4474 case CMD_STATIC_IP_SUCCESS: 4475 // IPv4 provisioning succeded. Advance to connected state. 4476 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4477 if (!isProvisioned) { 4478 // Can never happen unless DHCP reports success but isProvisioned thinks the 4479 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4480 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4481 // TODO: disconnect here instead. If our configuration is not usable, there's no 4482 // point in staying connected, and if mLinkProperties is out of sync with 4483 // reality, that will cause problems in the future. 4484 loge("IPv4 config succeeded, but not provisioned"); 4485 } 4486 break; 4487 4488 case DhcpStateMachine.DHCP_FAILURE: 4489 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4490 // give up and disconnect. 4491 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4492 if (!isProvisioned || lostIPv4Provisioning) { 4493 sendMessage(CMD_IP_CONFIGURATION_LOST); 4494 } else { 4495 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4496 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4497 4498 // To be sure we don't get stuck with a non-working network if all we had is 4499 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4500 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4501 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4502 // necessary for provisioning, its deletion will cause us to disconnect. 4503 // 4504 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4505 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4506 // not return true if we're using DHCP and don't have an IPv4 default route. So 4507 // for now it's only here for extra redundancy. However, it will increase 4508 // robustness if we move to getting IPv4 routes from netlink as well. 4509 loge("DHCP failure: provisioned, clearing IPv4 address."); 4510 if (!clearIPv4Address(mInterfaceName)) { 4511 sendMessage(CMD_IP_CONFIGURATION_LOST); 4512 } 4513 } 4514 break; 4515 4516 case CMD_STATIC_IP_FAILURE: 4517 // Static configuration was invalid, or an error occurred in applying it. Give up. 4518 sendMessage(CMD_IP_CONFIGURATION_LOST); 4519 break; 4520 4521 case CMD_UPDATE_LINKPROPERTIES: 4522 // IP addresses, DNS servers, etc. changed. Act accordingly. 4523 if (wasProvisioned && !isProvisioned) { 4524 // We no longer have a usable network configuration. Disconnect. 4525 sendMessage(CMD_IP_CONFIGURATION_LOST); 4526 } else if (!wasProvisioned && isProvisioned) { 4527 // We have a usable IPv6-only config. Advance to connected state. 4528 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4529 } 4530 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4531 // If anything has changed and we're already connected, send out a notification. 4532 sendLinkConfigurationChangedBroadcast(); 4533 } 4534 break; 4535 } 4536 } 4537 4538 /** 4539 * Clears all our link properties. 4540 */ 4541 private void clearLinkProperties() { 4542 // Clear the link properties obtained from DHCP and netlink. 4543 synchronized (mDhcpResultsLock) { 4544 if (mDhcpResults != null) { 4545 mDhcpResults.clear(); 4546 } 4547 } 4548 mNetlinkTracker.clearLinkProperties(); 4549 if (mIpReachabilityMonitor != null) { 4550 mIpReachabilityMonitor.clearLinkProperties(); 4551 } 4552 4553 // Now clear the merged link properties. 4554 mLinkProperties.clear(); 4555 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4556 } 4557 4558 /** 4559 * try to update default route MAC address. 4560 */ 4561 private String updateDefaultRouteMacAddress(int timeout) { 4562 String address = null; 4563 for (RouteInfo route : mLinkProperties.getRoutes()) { 4564 if (route.isDefaultRoute() && route.hasGateway()) { 4565 InetAddress gateway = route.getGateway(); 4566 if (gateway instanceof Inet4Address) { 4567 if (PDBG) { 4568 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4569 + gateway.getHostAddress()); 4570 } 4571 address = macAddressFromRoute(gateway.getHostAddress()); 4572 /* The gateway's MAC address is known */ 4573 if ((address == null) && (timeout > 0)) { 4574 boolean reachable = false; 4575 try { 4576 reachable = gateway.isReachable(timeout); 4577 } catch (Exception e) { 4578 loge("updateDefaultRouteMacAddress exception reaching :" 4579 + gateway.getHostAddress()); 4580 4581 } finally { 4582 if (reachable == true) { 4583 4584 address = macAddressFromRoute(gateway.getHostAddress()); 4585 if (PDBG) { 4586 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4587 + gateway.getHostAddress() + " found " + address); 4588 } 4589 } 4590 } 4591 } 4592 if (address != null) { 4593 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4594 } 4595 } 4596 } 4597 } 4598 return address; 4599 } 4600 4601 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4602 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4603 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4604 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4605 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4606 } 4607 4608 private void sendRssiChangeBroadcast(final int newRssi) { 4609 try { 4610 mBatteryStats.noteWifiRssiChanged(newRssi); 4611 } catch (RemoteException e) { 4612 // Won't happen. 4613 } 4614 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4615 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4616 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4617 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4618 } 4619 4620 private void sendNetworkStateChangeBroadcast(String bssid) { 4621 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4622 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4623 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4624 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4625 if (bssid != null) 4626 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4627 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4628 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4629 // We no longer report MAC address to third-parties and our code does 4630 // not rely on this broadcast, so just send the default MAC address. 4631 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4632 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4633 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4634 } 4635 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4636 } 4637 4638 private WifiInfo getWiFiInfoForUid(int uid) { 4639 if (Binder.getCallingUid() == Process.myUid()) { 4640 return mWifiInfo; 4641 } 4642 4643 WifiInfo result = new WifiInfo(mWifiInfo); 4644 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4645 4646 IBinder binder = ServiceManager.getService("package"); 4647 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4648 4649 try { 4650 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4651 uid) == PackageManager.PERMISSION_GRANTED) { 4652 result.setMacAddress(mWifiInfo.getMacAddress()); 4653 } 4654 } catch (RemoteException e) { 4655 Log.e(TAG, "Error checking receiver permission", e); 4656 } 4657 4658 return result; 4659 } 4660 4661 private void sendLinkConfigurationChangedBroadcast() { 4662 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4663 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4664 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4665 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4666 } 4667 4668 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4669 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4670 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4671 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4672 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4673 } 4674 4675 /** 4676 * Record the detailed state of a network. 4677 * 4678 * @param state the new {@code DetailedState} 4679 */ 4680 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4681 boolean hidden = false; 4682 4683 if (linkDebouncing || isRoaming()) { 4684 // There is generally a confusion in the system about colluding 4685 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4686 // which leads to multiple confusion. 4687 // 4688 // If link is de-bouncing or roaming, we already have an IP address 4689 // as well we were connected and are doing L2 cycles of 4690 // reconnecting or renewing IP address to check that we still have it 4691 // This L2 link flapping should ne be reflected into the Network state 4692 // which is the state of the WiFi Network visible to Layer 3 and applications 4693 // Note that once debouncing and roaming are completed, we will 4694 // set the Network state to where it should be, or leave it as unchanged 4695 // 4696 hidden = true; 4697 } 4698 if (DBG) { 4699 log("setDetailed state, old =" 4700 + mNetworkInfo.getDetailedState() + " and new state=" + state 4701 + " hidden=" + hidden); 4702 } 4703 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4704 // Always indicate that SSID has changed 4705 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4706 if (DBG) { 4707 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4708 } 4709 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4710 sendNetworkStateChangeBroadcast(null); 4711 } 4712 } 4713 if (hidden == true) { 4714 return false; 4715 } 4716 4717 if (state != mNetworkInfo.getDetailedState()) { 4718 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4719 if (mNetworkAgent != null) { 4720 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4721 } 4722 sendNetworkStateChangeBroadcast(null); 4723 return true; 4724 } 4725 return false; 4726 } 4727 4728 private DetailedState getNetworkDetailedState() { 4729 return mNetworkInfo.getDetailedState(); 4730 } 4731 4732 private SupplicantState handleSupplicantStateChange(Message message) { 4733 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4734 SupplicantState state = stateChangeResult.state; 4735 // Supplicant state change 4736 // [31-13] Reserved for future use 4737 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4738 // 50023 supplicant_state_changed (custom|1|5) 4739 mWifiInfo.setSupplicantState(state); 4740 // Network id is only valid when we start connecting 4741 if (SupplicantState.isConnecting(state)) { 4742 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4743 } else { 4744 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4745 } 4746 4747 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4748 4749 if (mWhiteListedSsids != null 4750 && mWhiteListedSsids.length > 0 4751 && stateChangeResult.wifiSsid != null) { 4752 String SSID = stateChangeResult.wifiSsid.toString(); 4753 String currentSSID = mWifiInfo.getSSID(); 4754 if (SSID != null 4755 && currentSSID != null 4756 && !SSID.equals(WifiSsid.NONE)) { 4757 // Remove quote before comparing 4758 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4759 && SSID.charAt(SSID.length() - 1) == '"') 4760 { 4761 SSID = SSID.substring(1, SSID.length() - 1); 4762 } 4763 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4764 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4765 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4766 } 4767 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4768 lastConnectAttempt = System.currentTimeMillis(); 4769 targetWificonfiguration 4770 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4771 transitionTo(mRoamingState); 4772 } 4773 } 4774 } 4775 4776 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4777 4778 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4779 4780 return state; 4781 } 4782 4783 /** 4784 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4785 * using the interface, stopping DHCP & disabling interface 4786 */ 4787 private void handleNetworkDisconnect() { 4788 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4789 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4790 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4791 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4792 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4793 4794 4795 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4796 4797 stopDhcp(); 4798 4799 try { 4800 mNwService.clearInterfaceAddresses(mInterfaceName); 4801 mNwService.disableIpv6(mInterfaceName); 4802 } catch (Exception e) { 4803 loge("Failed to clear addresses or disable ipv6" + e); 4804 } 4805 4806 /* Reset data structures */ 4807 mBadLinkspeedcount = 0; 4808 mWifiInfo.reset(); 4809 linkDebouncing = false; 4810 /* Reset roaming parameters */ 4811 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4812 4813 /** 4814 * fullBandConnectedTimeIntervalMilli: 4815 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4816 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4817 * Initialize to sane value = 20 seconds 4818 */ 4819 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4820 4821 setNetworkDetailedState(DetailedState.DISCONNECTED); 4822 if (mNetworkAgent != null) { 4823 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4824 mNetworkAgent = null; 4825 } 4826 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4827 4828 /* Clear network properties */ 4829 clearLinkProperties(); 4830 4831 /* Cend event to CM & network change broadcast */ 4832 sendNetworkStateChangeBroadcast(mLastBssid); 4833 4834 /* Cancel auto roam requests */ 4835 autoRoamSetBSSID(mLastNetworkId, "any"); 4836 4837 mLastBssid = null; 4838 registerDisconnected(); 4839 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4840 } 4841 4842 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4843 /* Socket connection can be lost when we do a graceful shutdown 4844 * or when the driver is hung. Ensure supplicant is stopped here. 4845 */ 4846 if (killSupplicant) { 4847 mWifiMonitor.killSupplicant(mP2pSupported); 4848 } 4849 mWifiNative.closeSupplicantConnection(); 4850 sendSupplicantConnectionChangedBroadcast(false); 4851 setWifiState(WIFI_STATE_DISABLED); 4852 } 4853 4854 void handlePreDhcpSetup() { 4855 mDhcpActive = true; 4856 if (!mBluetoothConnectionActive) { 4857 /* 4858 * There are problems setting the Wi-Fi driver's power 4859 * mode to active when bluetooth coexistence mode is 4860 * enabled or sense. 4861 * <p> 4862 * We set Wi-Fi to active mode when 4863 * obtaining an IP address because we've found 4864 * compatibility issues with some routers with low power 4865 * mode. 4866 * <p> 4867 * In order for this active power mode to properly be set, 4868 * we disable coexistence mode until we're done with 4869 * obtaining an IP address. One exception is if we 4870 * are currently connected to a headset, since disabling 4871 * coexistence would interrupt that connection. 4872 */ 4873 // Disable the coexistence mode 4874 mWifiNative.setBluetoothCoexistenceMode( 4875 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4876 } 4877 4878 // Disable power save and suspend optimizations during DHCP 4879 // Note: The order here is important for now. Brcm driver changes 4880 // power settings when we control suspend mode optimizations. 4881 // TODO: Remove this comment when the driver is fixed. 4882 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4883 mWifiNative.setPowerSave(false); 4884 4885 // Update link layer stats 4886 getWifiLinkLayerStats(false); 4887 4888 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4889 Message msg = new Message(); 4890 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4891 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4892 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4893 msg.obj = mDhcpStateMachine; 4894 mWifiP2pChannel.sendMessage(msg); 4895 } 4896 4897 4898 private boolean useLegacyDhcpClient() { 4899 return Settings.Global.getInt( 4900 mContext.getContentResolver(), 4901 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4902 } 4903 4904 private void maybeInitDhcpStateMachine() { 4905 if (mDhcpStateMachine == null) { 4906 if (useLegacyDhcpClient()) { 4907 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4908 mContext, WifiStateMachine.this, mInterfaceName); 4909 } else { 4910 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4911 mContext, WifiStateMachine.this, mInterfaceName); 4912 } 4913 } 4914 } 4915 4916 void startDhcp() { 4917 maybeInitDhcpStateMachine(); 4918 mDhcpStateMachine.registerForPreDhcpNotification(); 4919 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4920 } 4921 4922 void renewDhcp() { 4923 maybeInitDhcpStateMachine(); 4924 mDhcpStateMachine.registerForPreDhcpNotification(); 4925 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4926 } 4927 4928 void stopDhcp() { 4929 if (mDhcpStateMachine != null) { 4930 /* In case we were in middle of DHCP operation restore back powermode */ 4931 handlePostDhcpSetup(); 4932 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4933 } 4934 } 4935 4936 void handlePostDhcpSetup() { 4937 /* Restore power save and suspend optimizations */ 4938 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4939 mWifiNative.setPowerSave(true); 4940 4941 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4942 4943 // Set the coexistence mode back to its default value 4944 mWifiNative.setBluetoothCoexistenceMode( 4945 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4946 4947 mDhcpActive = false; 4948 } 4949 4950 void connectScanningService() { 4951 4952 if (mWifiScanner == null) { 4953 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4954 } 4955 } 4956 4957 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4958 4959 if (PDBG) { 4960 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4961 loge("link address " + dhcpResults.ipAddress); 4962 } 4963 4964 Inet4Address addr; 4965 synchronized (mDhcpResultsLock) { 4966 mDhcpResults = dhcpResults; 4967 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4968 } 4969 4970 if (isRoaming()) { 4971 int previousAddress = mWifiInfo.getIpAddress(); 4972 int newAddress = NetworkUtils.inetAddressToInt(addr); 4973 if (previousAddress != newAddress) { 4974 loge("handleIPv4Success, roaming and address changed" + 4975 mWifiInfo + " got: " + addr); 4976 } 4977 } 4978 mWifiInfo.setInetAddress(addr); 4979 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4980 updateLinkProperties(reason); 4981 } 4982 4983 private void handleSuccessfulIpConfiguration() { 4984 mLastSignalLevel = -1; // Force update of signal strength 4985 WifiConfiguration c = getCurrentWifiConfiguration(); 4986 if (c != null) { 4987 // Reset IP failure tracking 4988 c.numConnectionFailures = 0; 4989 4990 // Tell the framework whether the newly connected network is trusted or untrusted. 4991 updateCapabilities(c); 4992 } 4993 if (c != null) { 4994 ScanResult result = getCurrentScanResult(); 4995 if (result == null) { 4996 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4997 c.configKey()); 4998 } else { 4999 // Clear the per BSSID failure count 5000 result.numIpConfigFailures = 0; 5001 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5002 // any BSSID, even though it may already have a non zero ip failure count, 5003 // this will typically happen if the user walks away and come back to his arrea 5004 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5005 // in supplicant for a couple of hours or a day 5006 mWifiConfigStore.clearBssidBlacklist(); 5007 } 5008 } 5009 } 5010 5011 private void handleIPv4Failure(int reason) { 5012 synchronized(mDhcpResultsLock) { 5013 if (mDhcpResults != null) { 5014 mDhcpResults.clear(); 5015 } 5016 } 5017 if (PDBG) { 5018 loge("wifistatemachine handleIPv4Failure"); 5019 } 5020 updateLinkProperties(reason); 5021 } 5022 5023 private void handleIpConfigurationLost() { 5024 mWifiInfo.setInetAddress(null); 5025 mWifiInfo.setMeteredHint(false); 5026 5027 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5028 "DHCP FAILURE", mWifiInfo.getBSSID()); 5029 5030 /* DHCP times out after about 30 seconds, we do a 5031 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5032 */ 5033 mWifiNative.disconnect(); 5034 } 5035 5036 // TODO: De-duplicated this and handleIpConfigurationLost(). 5037 private void handleIpReachabilityLost() { 5038 // No need to be told about any additional neighbors that might also 5039 // become unreachable--quiet them now while we start disconnecting. 5040 if (mIpReachabilityMonitor != null) { 5041 mIpReachabilityMonitor.clearLinkProperties(); 5042 } 5043 5044 mWifiInfo.setInetAddress(null); 5045 mWifiInfo.setMeteredHint(false); 5046 5047 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5048 5049 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5050 mWifiNative.disconnect(); 5051 } 5052 5053 private int convertFrequencyToChannelNumber(int frequency) { 5054 if (frequency >= 2412 && frequency <= 2484) { 5055 return (frequency -2412) / 5 + 1; 5056 } else if (frequency >= 5170 && frequency <=5825) { 5057 //DFS is included 5058 return (frequency -5170) / 5 + 34; 5059 } else { 5060 return 0; 5061 } 5062 } 5063 5064 private int chooseApChannel(int apBand) { 5065 int apChannel; 5066 int[] channel; 5067 5068 if (apBand == 0) { 5069 //for 2.4GHz, we only set the AP at channel 1,6,11 5070 apChannel = 5 * mRandom.nextInt(3) + 1; 5071 } else { 5072 //5G without DFS 5073 channel = mWifiNative.getChannelsForBand(2); 5074 if (channel != null && channel.length > 0) { 5075 apChannel = channel[mRandom.nextInt(channel.length)]; 5076 apChannel = convertFrequencyToChannelNumber(apChannel); 5077 } else { 5078 Log.e(TAG, "SoftAp do not get available channel list"); 5079 apChannel = 0; 5080 } 5081 } 5082 5083 if(DBG) { 5084 Log.d(TAG, "SoftAp set on channel " + apChannel); 5085 } 5086 5087 return apChannel; 5088 } 5089 5090 5091 /* Current design is to not set the config on a running hostapd but instead 5092 * stop and start tethering when user changes config on a running access point 5093 * 5094 * TODO: Add control channel setup through hostapd that allows changing config 5095 * on a running daemon 5096 */ 5097 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5098 // set channel 5099 final WifiConfiguration config = new WifiConfiguration(configuration); 5100 5101 if (DBG) { 5102 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5103 } 5104 //set country code through HAL Here 5105 if (mSetCountryCode != null) { 5106 if(!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 5107 if (config.apBand != 0) { 5108 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5109 //countrycode is mandatory for 5GHz 5110 sendMessage(CMD_START_AP_FAILURE); 5111 return; 5112 } 5113 } 5114 } else { 5115 if (config.apBand != 0) { 5116 //countrycode is mandatory for 5GHz 5117 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5118 sendMessage(CMD_START_AP_FAILURE); 5119 return; 5120 } 5121 } 5122 5123 if (config.apChannel == 0) { 5124 config.apChannel = chooseApChannel(config.apBand); 5125 if (config.apChannel == 0) { 5126 //fail to get available channel 5127 sendMessage(CMD_START_AP_FAILURE); 5128 return; 5129 } 5130 } 5131 //turn off interface 5132 if (!mWifiNative.toggleInterface(0)) { 5133 sendMessage(CMD_START_AP_FAILURE); 5134 return; 5135 } 5136 // Start hostapd on a separate thread 5137 new Thread(new Runnable() { 5138 public void run() { 5139 try { 5140 mNwService.startAccessPoint(config, mInterfaceName); 5141 } catch (Exception e) { 5142 loge("Exception in softap start " + e); 5143 try { 5144 mNwService.stopAccessPoint(mInterfaceName); 5145 mNwService.startAccessPoint(config, mInterfaceName); 5146 } catch (Exception e1) { 5147 loge("Exception in softap re-start " + e1); 5148 sendMessage(CMD_START_AP_FAILURE); 5149 return; 5150 } 5151 } 5152 if (DBG) log("Soft AP start successful"); 5153 sendMessage(CMD_START_AP_SUCCESS); 5154 } 5155 }).start(); 5156 } 5157 5158 /* 5159 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5160 * so as to record MAC address of default gateway. 5161 **/ 5162 private String macAddressFromRoute(String ipAddress) { 5163 String macAddress = null; 5164 BufferedReader reader = null; 5165 try { 5166 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5167 5168 // Skip over the line bearing colum titles 5169 String line = reader.readLine(); 5170 5171 while ((line = reader.readLine()) != null) { 5172 String[] tokens = line.split("[ ]+"); 5173 if (tokens.length < 6) { 5174 continue; 5175 } 5176 5177 // ARP column format is 5178 // Address HWType HWAddress Flags Mask IFace 5179 String ip = tokens[0]; 5180 String mac = tokens[3]; 5181 5182 if (ipAddress.equals(ip)) { 5183 macAddress = mac; 5184 break; 5185 } 5186 } 5187 5188 if (macAddress == null) { 5189 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5190 "/proc/net/arp"); 5191 } 5192 5193 } catch (FileNotFoundException e) { 5194 loge("Could not open /proc/net/arp to lookup mac address"); 5195 } catch (IOException e) { 5196 loge("Could not read /proc/net/arp to lookup mac address"); 5197 } finally { 5198 try { 5199 if (reader != null) { 5200 reader.close(); 5201 } 5202 } catch (IOException e) { 5203 // Do nothing 5204 } 5205 } 5206 return macAddress; 5207 5208 } 5209 5210 private class WifiNetworkFactory extends NetworkFactory { 5211 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5212 super(l, c, TAG, f); 5213 } 5214 5215 @Override 5216 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5217 ++mConnectionRequests; 5218 } 5219 5220 @Override 5221 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5222 --mConnectionRequests; 5223 } 5224 5225 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5226 pw.println("mConnectionRequests " + mConnectionRequests); 5227 } 5228 5229 } 5230 5231 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5232 private int mUntrustedReqCount; 5233 5234 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5235 super(l, c, tag, f); 5236 } 5237 5238 @Override 5239 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5240 if (!networkRequest.networkCapabilities.hasCapability( 5241 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5242 if (++mUntrustedReqCount == 1) { 5243 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5244 } 5245 } 5246 } 5247 5248 @Override 5249 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5250 if (!networkRequest.networkCapabilities.hasCapability( 5251 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5252 if (--mUntrustedReqCount == 0) { 5253 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5254 } 5255 } 5256 } 5257 5258 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5259 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5260 } 5261 } 5262 5263 void maybeRegisterNetworkFactory() { 5264 if (mNetworkFactory == null) { 5265 checkAndSetConnectivityInstance(); 5266 if (mCm != null) { 5267 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5268 NETWORKTYPE, mNetworkCapabilitiesFilter); 5269 mNetworkFactory.setScoreFilter(60); 5270 mNetworkFactory.register(); 5271 5272 // We can't filter untrusted network in the capabilities filter because a trusted 5273 // network would still satisfy a request that accepts untrusted ones. 5274 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5275 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5276 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5277 mUntrustedNetworkFactory.register(); 5278 } 5279 } 5280 } 5281 5282 /******************************************************** 5283 * HSM states 5284 *******************************************************/ 5285 5286 class DefaultState extends State { 5287 @Override 5288 public boolean processMessage(Message message) { 5289 logStateAndMessage(message, getClass().getSimpleName()); 5290 5291 switch (message.what) { 5292 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5293 AsyncChannel ac = (AsyncChannel) message.obj; 5294 if (ac == mWifiP2pChannel) { 5295 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5296 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5297 } else { 5298 loge("WifiP2pService connection failure, error=" + message.arg1); 5299 } 5300 } else { 5301 loge("got HALF_CONNECTED for unknown channel"); 5302 } 5303 break; 5304 } 5305 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5306 AsyncChannel ac = (AsyncChannel) message.obj; 5307 if (ac == mWifiP2pChannel) { 5308 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5309 //TODO: Re-establish connection to state machine after a delay 5310 // mWifiP2pChannel.connect(mContext, getHandler(), 5311 // mWifiP2pManager.getMessenger()); 5312 } 5313 break; 5314 } 5315 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5316 mBluetoothConnectionActive = (message.arg1 != 5317 BluetoothAdapter.STATE_DISCONNECTED); 5318 break; 5319 /* Synchronous call returns */ 5320 case CMD_PING_SUPPLICANT: 5321 case CMD_ENABLE_NETWORK: 5322 case CMD_ADD_OR_UPDATE_NETWORK: 5323 case CMD_REMOVE_NETWORK: 5324 case CMD_SAVE_CONFIG: 5325 replyToMessage(message, message.what, FAILURE); 5326 break; 5327 case CMD_GET_CAPABILITY_FREQ: 5328 replyToMessage(message, message.what, null); 5329 break; 5330 case CMD_GET_CONFIGURED_NETWORKS: 5331 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5332 break; 5333 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5334 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5335 break; 5336 case CMD_ENABLE_RSSI_POLL: 5337 mEnableRssiPolling = (message.arg1 == 1); 5338 break; 5339 case CMD_SET_HIGH_PERF_MODE: 5340 if (message.arg1 == 1) { 5341 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5342 } else { 5343 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5344 } 5345 break; 5346 case CMD_BOOT_COMPLETED: 5347 maybeRegisterNetworkFactory(); 5348 break; 5349 case CMD_SCREEN_STATE_CHANGED: 5350 handleScreenStateChanged(message.arg1 != 0); 5351 break; 5352 /* Discard */ 5353 case CMD_START_SCAN: 5354 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5355 break; 5356 case CMD_START_SUPPLICANT: 5357 case CMD_STOP_SUPPLICANT: 5358 case CMD_STOP_SUPPLICANT_FAILED: 5359 case CMD_START_DRIVER: 5360 case CMD_STOP_DRIVER: 5361 case CMD_DELAYED_STOP_DRIVER: 5362 case CMD_DRIVER_START_TIMED_OUT: 5363 case CMD_START_AP: 5364 case CMD_START_AP_SUCCESS: 5365 case CMD_START_AP_FAILURE: 5366 case CMD_STOP_AP: 5367 case CMD_TETHER_STATE_CHANGE: 5368 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5369 case CMD_DISCONNECT: 5370 case CMD_RECONNECT: 5371 case CMD_REASSOCIATE: 5372 case CMD_RELOAD_TLS_AND_RECONNECT: 5373 case WifiMonitor.SUP_CONNECTION_EVENT: 5374 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5375 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5376 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5377 case WifiMonitor.SCAN_RESULTS_EVENT: 5378 case WifiMonitor.SCAN_FAILED_EVENT: 5379 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5380 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5381 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5382 case WifiMonitor.WPS_OVERLAP_EVENT: 5383 case CMD_BLACKLIST_NETWORK: 5384 case CMD_CLEAR_BLACKLIST: 5385 case CMD_SET_OPERATIONAL_MODE: 5386 case CMD_SET_COUNTRY_CODE: 5387 case CMD_SET_FREQUENCY_BAND: 5388 case CMD_RSSI_POLL: 5389 case CMD_ENABLE_ALL_NETWORKS: 5390 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5391 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5392 /* Handled by WifiApConfigStore */ 5393 case CMD_SET_AP_CONFIG: 5394 case CMD_SET_AP_CONFIG_COMPLETED: 5395 case CMD_REQUEST_AP_CONFIG: 5396 case CMD_RESPONSE_AP_CONFIG: 5397 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5398 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5399 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5400 case CMD_DISABLE_P2P_RSP: 5401 case WifiMonitor.SUP_REQUEST_IDENTITY: 5402 case CMD_TEST_NETWORK_DISCONNECT: 5403 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5404 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5405 case CMD_TARGET_BSSID: 5406 case CMD_AUTO_CONNECT: 5407 case CMD_AUTO_ROAM: 5408 case CMD_AUTO_SAVE_NETWORK: 5409 case CMD_ASSOCIATED_BSSID: 5410 case CMD_UNWANTED_NETWORK: 5411 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5412 case CMD_ROAM_WATCHDOG_TIMER: 5413 case CMD_DISABLE_EPHEMERAL_NETWORK: 5414 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5415 case CMD_STARTED_PNO_DBG: 5416 case CMD_STARTED_GSCAN_DBG: 5417 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5418 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5419 break; 5420 case DhcpStateMachine.CMD_ON_QUIT: 5421 mDhcpStateMachine = null; 5422 break; 5423 case CMD_SET_SUSPEND_OPT_ENABLED: 5424 if (message.arg1 == 1) { 5425 mSuspendWakeLock.release(); 5426 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5427 } else { 5428 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5429 } 5430 break; 5431 case WifiMonitor.DRIVER_HUNG_EVENT: 5432 setSupplicantRunning(false); 5433 setSupplicantRunning(true); 5434 break; 5435 case WifiManager.CONNECT_NETWORK: 5436 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5437 WifiManager.BUSY); 5438 break; 5439 case WifiManager.FORGET_NETWORK: 5440 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5441 WifiManager.BUSY); 5442 break; 5443 case WifiManager.SAVE_NETWORK: 5444 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5445 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5446 WifiManager.BUSY); 5447 break; 5448 case WifiManager.START_WPS: 5449 replyToMessage(message, WifiManager.WPS_FAILED, 5450 WifiManager.BUSY); 5451 break; 5452 case WifiManager.CANCEL_WPS: 5453 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5454 WifiManager.BUSY); 5455 break; 5456 case WifiManager.DISABLE_NETWORK: 5457 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5458 WifiManager.BUSY); 5459 break; 5460 case WifiManager.RSSI_PKTCNT_FETCH: 5461 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5462 WifiManager.BUSY); 5463 break; 5464 case CMD_GET_SUPPORTED_FEATURES: 5465 int featureSet = WifiNative.getSupportedFeatureSet(); 5466 replyToMessage(message, message.what, featureSet); 5467 break; 5468 case CMD_FIRMWARE_ALERT: 5469 if (mWifiLogger != null) { 5470 byte[] buffer = (byte[])message.obj; 5471 mWifiLogger.captureAlertData(message.arg1, buffer); 5472 } 5473 break; 5474 case CMD_GET_LINK_LAYER_STATS: 5475 // Not supported hence reply with error message 5476 replyToMessage(message, message.what, null); 5477 break; 5478 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5479 NetworkInfo info = (NetworkInfo) message.obj; 5480 mP2pConnected.set(info.isConnected()); 5481 break; 5482 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5483 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5484 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5485 break; 5486 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5487 case CMD_UPDATE_LINKPROPERTIES: 5488 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5489 break; 5490 case CMD_GET_MATCHING_CONFIG: 5491 replyToMessage(message, message.what); 5492 break; 5493 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5494 case CMD_IP_CONFIGURATION_LOST: 5495 case CMD_IP_REACHABILITY_LOST: 5496 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5497 break; 5498 case CMD_GET_CONNECTION_STATISTICS: 5499 replyToMessage(message, message.what, mWifiConnectionStatistics); 5500 break; 5501 case CMD_REMOVE_APP_CONFIGURATIONS: 5502 deferMessage(message); 5503 break; 5504 case CMD_REMOVE_USER_CONFIGURATIONS: 5505 deferMessage(message); 5506 break; 5507 default: 5508 loge("Error! unhandled message" + message); 5509 break; 5510 } 5511 return HANDLED; 5512 } 5513 } 5514 5515 class InitialState extends State { 5516 @Override 5517 public void enter() { 5518 WifiNative.stopHal(); 5519 mWifiNative.unloadDriver(); 5520 if (mWifiP2pChannel == null) { 5521 mWifiP2pChannel = new AsyncChannel(); 5522 mWifiP2pChannel.connect(mContext, getHandler(), 5523 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5524 } 5525 5526 if (mWifiApConfigChannel == null) { 5527 mWifiApConfigChannel = new AsyncChannel(); 5528 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5529 mContext, getHandler()); 5530 wifiApConfigStore.loadApConfiguration(); 5531 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5532 wifiApConfigStore.getMessenger()); 5533 } 5534 5535 if (mWifiConfigStore.enableHalBasedPno.get()) { 5536 // make sure developer Settings are in sync with the config option 5537 mHalBasedPnoEnableInDevSettings = true; 5538 } 5539 } 5540 @Override 5541 public boolean processMessage(Message message) { 5542 logStateAndMessage(message, getClass().getSimpleName()); 5543 switch (message.what) { 5544 case CMD_START_SUPPLICANT: 5545 if (mWifiNative.loadDriver()) { 5546 try { 5547 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5548 } catch (Exception e) { 5549 loge("Failed to reload STA firmware " + e); 5550 // Continue 5551 } 5552 5553 try { 5554 // A runtime crash can leave the interface up and 5555 // IP addresses configured, and this affects 5556 // connectivity when supplicant starts up. 5557 // Ensure interface is down and we have no IP 5558 // addresses before a supplicant start. 5559 mNwService.setInterfaceDown(mInterfaceName); 5560 mNwService.clearInterfaceAddresses(mInterfaceName); 5561 5562 // Set privacy extensions 5563 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5564 5565 // IPv6 is enabled only as long as access point is connected since: 5566 // - IPv6 addresses and routes stick around after disconnection 5567 // - kernel is unaware when connected and fails to start IPv6 negotiation 5568 // - kernel can start autoconfiguration when 802.1x is not complete 5569 mNwService.disableIpv6(mInterfaceName); 5570 } catch (RemoteException re) { 5571 loge("Unable to change interface settings: " + re); 5572 } catch (IllegalStateException ie) { 5573 loge("Unable to change interface settings: " + ie); 5574 } 5575 5576 /* Stop a running supplicant after a runtime restart 5577 * Avoids issues with drivers that do not handle interface down 5578 * on a running supplicant properly. 5579 */ 5580 mWifiMonitor.killSupplicant(mP2pSupported); 5581 5582 if (WifiNative.startHal() == false) { 5583 /* starting HAL is optional */ 5584 loge("Failed to start HAL"); 5585 } 5586 5587 if (mWifiNative.startSupplicant(mP2pSupported)) { 5588 setWifiState(WIFI_STATE_ENABLING); 5589 if (DBG) log("Supplicant start successful"); 5590 mWifiMonitor.startMonitoring(); 5591 transitionTo(mSupplicantStartingState); 5592 } else { 5593 loge("Failed to start supplicant!"); 5594 } 5595 } else { 5596 loge("Failed to load driver"); 5597 } 5598 break; 5599 case CMD_START_AP: 5600 if (mWifiNative.loadDriver() == false) { 5601 loge("Failed to load driver for softap"); 5602 } else { 5603 5604 if (WifiNative.startHal() == false) { 5605 /* starting HAL is optional */ 5606 loge("Failed to start HAL"); 5607 } 5608 5609 setWifiApState(WIFI_AP_STATE_ENABLING); 5610 transitionTo(mSoftApStartingState); 5611 } 5612 break; 5613 default: 5614 return NOT_HANDLED; 5615 } 5616 return HANDLED; 5617 } 5618 } 5619 5620 class SupplicantStartingState extends State { 5621 private void initializeWpsDetails() { 5622 String detail; 5623 detail = SystemProperties.get("ro.product.name", ""); 5624 if (!mWifiNative.setDeviceName(detail)) { 5625 loge("Failed to set device name " + detail); 5626 } 5627 detail = SystemProperties.get("ro.product.manufacturer", ""); 5628 if (!mWifiNative.setManufacturer(detail)) { 5629 loge("Failed to set manufacturer " + detail); 5630 } 5631 detail = SystemProperties.get("ro.product.model", ""); 5632 if (!mWifiNative.setModelName(detail)) { 5633 loge("Failed to set model name " + detail); 5634 } 5635 detail = SystemProperties.get("ro.product.model", ""); 5636 if (!mWifiNative.setModelNumber(detail)) { 5637 loge("Failed to set model number " + detail); 5638 } 5639 detail = SystemProperties.get("ro.serialno", ""); 5640 if (!mWifiNative.setSerialNumber(detail)) { 5641 loge("Failed to set serial number " + detail); 5642 } 5643 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5644 loge("Failed to set WPS config methods"); 5645 } 5646 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5647 loge("Failed to set primary device type " + mPrimaryDeviceType); 5648 } 5649 } 5650 5651 @Override 5652 public boolean processMessage(Message message) { 5653 logStateAndMessage(message, getClass().getSimpleName()); 5654 5655 switch(message.what) { 5656 case WifiMonitor.SUP_CONNECTION_EVENT: 5657 if (DBG) log("Supplicant connection established"); 5658 setWifiState(WIFI_STATE_ENABLED); 5659 mSupplicantRestartCount = 0; 5660 /* Reset the supplicant state to indicate the supplicant 5661 * state is not known at this time */ 5662 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5663 /* Initialize data structures */ 5664 mLastBssid = null; 5665 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5666 mLastSignalLevel = -1; 5667 5668 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5669 mWifiNative.enableSaveConfig(); 5670 mWifiConfigStore.loadAndEnableAllNetworks(); 5671 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5672 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5673 } 5674 initializeWpsDetails(); 5675 5676 sendSupplicantConnectionChangedBroadcast(true); 5677 transitionTo(mDriverStartedState); 5678 break; 5679 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5680 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5681 loge("Failed to setup control channel, restart supplicant"); 5682 mWifiMonitor.killSupplicant(mP2pSupported); 5683 transitionTo(mInitialState); 5684 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5685 } else { 5686 loge("Failed " + mSupplicantRestartCount + 5687 " times to start supplicant, unload driver"); 5688 mSupplicantRestartCount = 0; 5689 setWifiState(WIFI_STATE_UNKNOWN); 5690 transitionTo(mInitialState); 5691 } 5692 break; 5693 case CMD_START_SUPPLICANT: 5694 case CMD_STOP_SUPPLICANT: 5695 case CMD_START_AP: 5696 case CMD_STOP_AP: 5697 case CMD_START_DRIVER: 5698 case CMD_STOP_DRIVER: 5699 case CMD_SET_OPERATIONAL_MODE: 5700 case CMD_SET_COUNTRY_CODE: 5701 case CMD_SET_FREQUENCY_BAND: 5702 case CMD_START_PACKET_FILTERING: 5703 case CMD_STOP_PACKET_FILTERING: 5704 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5705 deferMessage(message); 5706 break; 5707 default: 5708 return NOT_HANDLED; 5709 } 5710 return HANDLED; 5711 } 5712 } 5713 5714 class SupplicantStartedState extends State { 5715 @Override 5716 public void enter() { 5717 /* Wifi is available as long as we have a connection to supplicant */ 5718 mNetworkInfo.setIsAvailable(true); 5719 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5720 5721 int defaultInterval = mContext.getResources().getInteger( 5722 R.integer.config_wifi_supplicant_scan_interval); 5723 5724 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5725 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5726 defaultInterval); 5727 5728 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5729 mWifiNative.setExternalSim(true); 5730 5731 /* turn on use of DFS channels */ 5732 WifiNative.setDfsFlag(true); 5733 5734 /* set country code */ 5735 setCountryCode(); 5736 5737 setRandomMacOui(); 5738 mWifiNative.enableAutoConnect(false); 5739 } 5740 5741 @Override 5742 public boolean processMessage(Message message) { 5743 logStateAndMessage(message, getClass().getSimpleName()); 5744 5745 switch(message.what) { 5746 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5747 if (mP2pSupported) { 5748 transitionTo(mWaitForP2pDisableState); 5749 } else { 5750 transitionTo(mSupplicantStoppingState); 5751 } 5752 break; 5753 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5754 loge("Connection lost, restart supplicant"); 5755 handleSupplicantConnectionLoss(true); 5756 handleNetworkDisconnect(); 5757 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5758 if (mP2pSupported) { 5759 transitionTo(mWaitForP2pDisableState); 5760 } else { 5761 transitionTo(mInitialState); 5762 } 5763 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5764 break; 5765 case WifiMonitor.SCAN_RESULTS_EVENT: 5766 case WifiMonitor.SCAN_FAILED_EVENT: 5767 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5768 closeRadioScanStats(); 5769 noteScanEnd(); 5770 setScanResults(); 5771 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5772 /* Just updated results from full scan, let apps know about this */ 5773 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5774 sendScanResultsAvailableBroadcast(scanSucceeded); 5775 } 5776 mSendScanResultsBroadcast = false; 5777 mIsScanOngoing = false; 5778 mIsFullScanOngoing = false; 5779 if (mBufferedScanMsg.size() > 0) 5780 sendMessage(mBufferedScanMsg.remove()); 5781 break; 5782 case CMD_PING_SUPPLICANT: 5783 boolean ok = mWifiNative.ping(); 5784 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5785 break; 5786 case CMD_GET_CAPABILITY_FREQ: 5787 String freqs = mWifiNative.getFreqCapability(); 5788 replyToMessage(message, message.what, freqs); 5789 break; 5790 case CMD_START_AP: 5791 /* Cannot start soft AP while in client mode */ 5792 loge("Failed to start soft AP with a running supplicant"); 5793 setWifiApState(WIFI_AP_STATE_FAILED); 5794 break; 5795 case CMD_SET_OPERATIONAL_MODE: 5796 mOperationalMode = message.arg1; 5797 mWifiConfigStore. 5798 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5799 break; 5800 case CMD_TARGET_BSSID: 5801 // Trying to associate to this BSSID 5802 if (message.obj != null) { 5803 mTargetRoamBSSID = (String) message.obj; 5804 } 5805 break; 5806 case CMD_GET_LINK_LAYER_STATS: 5807 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5808 if (stats == null) { 5809 // When firmware doesnt support link layer stats, return an empty object 5810 stats = new WifiLinkLayerStats(); 5811 } 5812 replyToMessage(message, message.what, stats); 5813 break; 5814 case CMD_SET_COUNTRY_CODE: 5815 String country = (String) message.obj; 5816 5817 final boolean persist = (message.arg2 == 1); 5818 final int sequence = message.arg1; 5819 5820 if (sequence != mCountryCodeSequence.get()) { 5821 if (DBG) log("set country code ignored due to sequnce num"); 5822 break; 5823 } 5824 if (DBG) log("set country code " + country); 5825 country = country.toUpperCase(Locale.ROOT); 5826 5827 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5828 if (mWifiNative.setCountryCode(country)) { 5829 mDriverSetCountryCode = country; 5830 } else { 5831 loge("Failed to set country code " + country); 5832 } 5833 } 5834 5835 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5836 break; 5837 default: 5838 return NOT_HANDLED; 5839 } 5840 return HANDLED; 5841 } 5842 5843 @Override 5844 public void exit() { 5845 mNetworkInfo.setIsAvailable(false); 5846 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5847 } 5848 } 5849 5850 class SupplicantStoppingState extends State { 5851 @Override 5852 public void enter() { 5853 /* Send any reset commands to supplicant before shutting it down */ 5854 handleNetworkDisconnect(); 5855 if (mDhcpStateMachine != null) { 5856 mDhcpStateMachine.doQuit(); 5857 } 5858 5859 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5860 if (suppState == null) suppState = "unknown"; 5861 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5862 if (p2pSuppState == null) p2pSuppState = "unknown"; 5863 5864 loge("SupplicantStoppingState: stopSupplicant " 5865 + " init.svc.wpa_supplicant=" + suppState 5866 + " init.svc.p2p_supplicant=" + p2pSuppState); 5867 mWifiMonitor.stopSupplicant(); 5868 5869 /* Send ourselves a delayed message to indicate failure after a wait time */ 5870 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5871 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5872 setWifiState(WIFI_STATE_DISABLING); 5873 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5874 } 5875 @Override 5876 public boolean processMessage(Message message) { 5877 logStateAndMessage(message, getClass().getSimpleName()); 5878 5879 switch(message.what) { 5880 case WifiMonitor.SUP_CONNECTION_EVENT: 5881 loge("Supplicant connection received while stopping"); 5882 break; 5883 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5884 if (DBG) log("Supplicant connection lost"); 5885 handleSupplicantConnectionLoss(false); 5886 transitionTo(mInitialState); 5887 break; 5888 case CMD_STOP_SUPPLICANT_FAILED: 5889 if (message.arg1 == mSupplicantStopFailureToken) { 5890 loge("Timed out on a supplicant stop, kill and proceed"); 5891 handleSupplicantConnectionLoss(true); 5892 transitionTo(mInitialState); 5893 } 5894 break; 5895 case CMD_START_SUPPLICANT: 5896 case CMD_STOP_SUPPLICANT: 5897 case CMD_START_AP: 5898 case CMD_STOP_AP: 5899 case CMD_START_DRIVER: 5900 case CMD_STOP_DRIVER: 5901 case CMD_SET_OPERATIONAL_MODE: 5902 case CMD_SET_COUNTRY_CODE: 5903 case CMD_SET_FREQUENCY_BAND: 5904 case CMD_START_PACKET_FILTERING: 5905 case CMD_STOP_PACKET_FILTERING: 5906 deferMessage(message); 5907 break; 5908 default: 5909 return NOT_HANDLED; 5910 } 5911 return HANDLED; 5912 } 5913 } 5914 5915 class DriverStartingState extends State { 5916 private int mTries; 5917 @Override 5918 public void enter() { 5919 mTries = 1; 5920 /* Send ourselves a delayed message to start driver a second time */ 5921 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5922 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5923 } 5924 @Override 5925 public boolean processMessage(Message message) { 5926 logStateAndMessage(message, getClass().getSimpleName()); 5927 5928 switch(message.what) { 5929 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5930 SupplicantState state = handleSupplicantStateChange(message); 5931 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5932 * a state that indicates driver has started, it is ready to 5933 * receive driver commands 5934 */ 5935 if (SupplicantState.isDriverActive(state)) { 5936 transitionTo(mDriverStartedState); 5937 } 5938 break; 5939 case CMD_DRIVER_START_TIMED_OUT: 5940 if (message.arg1 == mDriverStartToken) { 5941 if (mTries >= 2) { 5942 loge("Failed to start driver after " + mTries); 5943 transitionTo(mDriverStoppedState); 5944 } else { 5945 loge("Driver start failed, retrying"); 5946 mWakeLock.acquire(); 5947 mWifiNative.startDriver(); 5948 mWakeLock.release(); 5949 5950 ++mTries; 5951 /* Send ourselves a delayed message to start driver again */ 5952 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5953 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5954 } 5955 } 5956 break; 5957 /* Queue driver commands & connection events */ 5958 case CMD_START_DRIVER: 5959 case CMD_STOP_DRIVER: 5960 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5961 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5962 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5963 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5964 case WifiMonitor.WPS_OVERLAP_EVENT: 5965 case CMD_SET_COUNTRY_CODE: 5966 case CMD_SET_FREQUENCY_BAND: 5967 case CMD_START_PACKET_FILTERING: 5968 case CMD_STOP_PACKET_FILTERING: 5969 case CMD_START_SCAN: 5970 case CMD_DISCONNECT: 5971 case CMD_REASSOCIATE: 5972 case CMD_RECONNECT: 5973 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5974 deferMessage(message); 5975 break; 5976 case WifiMonitor.SCAN_RESULTS_EVENT: 5977 case WifiMonitor.SCAN_FAILED_EVENT: 5978 // Loose scan results obtained in Driver Starting state, they can only confuse 5979 // the state machine 5980 break; 5981 default: 5982 return NOT_HANDLED; 5983 } 5984 return HANDLED; 5985 } 5986 } 5987 5988 class DriverStartedState extends State { 5989 @Override 5990 public void enter() { 5991 5992 if (PDBG) { 5993 loge("DriverStartedState enter"); 5994 } 5995 5996 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 5997 mIsRunning = true; 5998 mInDelayedStop = false; 5999 mDelayedStopCounter++; 6000 updateBatteryWorkSource(null); 6001 /** 6002 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6003 * When this mode is on, some of the low-level scan parameters used by the 6004 * driver are changed to reduce interference with bluetooth 6005 */ 6006 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6007 /* set frequency band of operation */ 6008 setFrequencyBand(); 6009 /* initialize network state */ 6010 setNetworkDetailedState(DetailedState.DISCONNECTED); 6011 6012 /* Remove any filtering on Multicast v6 at start */ 6013 mWifiNative.stopFilteringMulticastV6Packets(); 6014 6015 /* Reset Multicast v4 filtering state */ 6016 if (mFilteringMulticastV4Packets.get()) { 6017 mWifiNative.startFilteringMulticastV4Packets(); 6018 } else { 6019 mWifiNative.stopFilteringMulticastV4Packets(); 6020 } 6021 6022 mDhcpActive = false; 6023 6024 if (mOperationalMode != CONNECT_MODE) { 6025 mWifiNative.disconnect(); 6026 mWifiConfigStore.disableAllNetworks(); 6027 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6028 setWifiState(WIFI_STATE_DISABLED); 6029 } 6030 transitionTo(mScanModeState); 6031 } else { 6032 6033 // Status pulls in the current supplicant state and network connection state 6034 // events over the monitor connection. This helps framework sync up with 6035 // current supplicant state 6036 // TODO: actually check th supplicant status string and make sure the supplicant 6037 // is in disconnecte4d state. 6038 mWifiNative.status(); 6039 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6040 transitionTo(mDisconnectedState); 6041 transitionTo(mDisconnectedState); 6042 } 6043 6044 // We may have missed screen update at boot 6045 if (mScreenBroadcastReceived.get() == false) { 6046 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6047 Context.POWER_SERVICE); 6048 handleScreenStateChanged(powerManager.isScreenOn()); 6049 } else { 6050 // Set the right suspend mode settings 6051 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6052 && mUserWantsSuspendOpt.get()); 6053 } 6054 mWifiNative.setPowerSave(true); 6055 6056 if (mP2pSupported) { 6057 if (mOperationalMode == CONNECT_MODE) { 6058 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6059 } else { 6060 // P2P statemachine starts in disabled state, and is not enabled until 6061 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6062 // keep it disabled. 6063 } 6064 } 6065 6066 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6067 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6068 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6069 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6070 6071 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6072 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6073 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6074 mHalBasedPnoDriverSupported = true; 6075 } 6076 6077 if (PDBG) { 6078 loge("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6079 + " feature=" + mHalFeatureSet); 6080 } 6081 } 6082 6083 @Override 6084 public boolean processMessage(Message message) { 6085 logStateAndMessage(message, getClass().getSimpleName()); 6086 6087 switch(message.what) { 6088 case CMD_START_SCAN: 6089 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6090 break; 6091 case CMD_SET_FREQUENCY_BAND: 6092 int band = message.arg1; 6093 if (DBG) log("set frequency band " + band); 6094 if (mWifiNative.setBand(band)) { 6095 6096 if (PDBG) loge("did set frequency band " + band); 6097 6098 mFrequencyBand.set(band); 6099 // Flush old data - like scan results 6100 mWifiNative.bssFlush(); 6101 // Fetch the latest scan results when frequency band is set 6102// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6103 6104 if (PDBG) loge("done set frequency band " + band); 6105 6106 } else { 6107 loge("Failed to set frequency band " + band); 6108 } 6109 break; 6110 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6111 mBluetoothConnectionActive = (message.arg1 != 6112 BluetoothAdapter.STATE_DISCONNECTED); 6113 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6114 break; 6115 case CMD_STOP_DRIVER: 6116 int mode = message.arg1; 6117 6118 /* Already doing a delayed stop */ 6119 if (mInDelayedStop) { 6120 if (DBG) log("Already in delayed stop"); 6121 break; 6122 } 6123 /* disconnect right now, but leave the driver running for a bit */ 6124 mWifiConfigStore.disableAllNetworks(); 6125 6126 mInDelayedStop = true; 6127 mDelayedStopCounter++; 6128 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6129 6130 /* send regular delayed shut down */ 6131 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6132 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 6133 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6134 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6135 DRIVER_STOP_REQUEST, driverStopIntent, 6136 PendingIntent.FLAG_UPDATE_CURRENT); 6137 6138 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6139 + mDriverStopDelayMs, mDriverStopIntent); 6140 break; 6141 case CMD_START_DRIVER: 6142 if (mInDelayedStop) { 6143 mInDelayedStop = false; 6144 mDelayedStopCounter++; 6145 mAlarmManager.cancel(mDriverStopIntent); 6146 if (DBG) log("Delayed stop ignored due to start"); 6147 if (mOperationalMode == CONNECT_MODE) { 6148 mWifiConfigStore.enableAllNetworks(); 6149 } 6150 } 6151 break; 6152 case CMD_DELAYED_STOP_DRIVER: 6153 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6154 if (message.arg1 != mDelayedStopCounter) break; 6155 if (getCurrentState() != mDisconnectedState) { 6156 mWifiNative.disconnect(); 6157 handleNetworkDisconnect(); 6158 } 6159 mWakeLock.acquire(); 6160 mWifiNative.stopDriver(); 6161 mWakeLock.release(); 6162 if (mP2pSupported) { 6163 transitionTo(mWaitForP2pDisableState); 6164 } else { 6165 transitionTo(mDriverStoppingState); 6166 } 6167 break; 6168 case CMD_START_PACKET_FILTERING: 6169 if (message.arg1 == MULTICAST_V6) { 6170 mWifiNative.startFilteringMulticastV6Packets(); 6171 } else if (message.arg1 == MULTICAST_V4) { 6172 mWifiNative.startFilteringMulticastV4Packets(); 6173 } else { 6174 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6175 } 6176 break; 6177 case CMD_STOP_PACKET_FILTERING: 6178 if (message.arg1 == MULTICAST_V6) { 6179 mWifiNative.stopFilteringMulticastV6Packets(); 6180 } else if (message.arg1 == MULTICAST_V4) { 6181 mWifiNative.stopFilteringMulticastV4Packets(); 6182 } else { 6183 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6184 } 6185 break; 6186 case CMD_SET_SUSPEND_OPT_ENABLED: 6187 if (message.arg1 == 1) { 6188 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6189 mSuspendWakeLock.release(); 6190 } else { 6191 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6192 } 6193 break; 6194 case CMD_SET_HIGH_PERF_MODE: 6195 if (message.arg1 == 1) { 6196 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6197 } else { 6198 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6199 } 6200 break; 6201 case CMD_ENABLE_TDLS: 6202 if (message.obj != null) { 6203 String remoteAddress = (String) message.obj; 6204 boolean enable = (message.arg1 == 1); 6205 mWifiNative.startTdls(remoteAddress, enable); 6206 } 6207 break; 6208 case WifiMonitor.ANQP_DONE_EVENT: 6209 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6210 break; 6211 default: 6212 return NOT_HANDLED; 6213 } 6214 return HANDLED; 6215 } 6216 @Override 6217 public void exit() { 6218 6219 mWifiLogger.stopLogging(); 6220 6221 mIsRunning = false; 6222 updateBatteryWorkSource(null); 6223 mScanResults = new ArrayList<>(); 6224 6225 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6226 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6227 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6228 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6229 noteScanEnd(); // wrap up any pending request. 6230 mBufferedScanMsg.clear(); 6231 } 6232 } 6233 6234 class WaitForP2pDisableState extends State { 6235 private State mTransitionToState; 6236 @Override 6237 public void enter() { 6238 switch (getCurrentMessage().what) { 6239 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6240 mTransitionToState = mInitialState; 6241 break; 6242 case CMD_DELAYED_STOP_DRIVER: 6243 mTransitionToState = mDriverStoppingState; 6244 break; 6245 case CMD_STOP_SUPPLICANT: 6246 mTransitionToState = mSupplicantStoppingState; 6247 break; 6248 default: 6249 mTransitionToState = mDriverStoppingState; 6250 break; 6251 } 6252 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6253 } 6254 @Override 6255 public boolean processMessage(Message message) { 6256 logStateAndMessage(message, getClass().getSimpleName()); 6257 6258 switch(message.what) { 6259 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6260 transitionTo(mTransitionToState); 6261 break; 6262 /* Defer wifi start/shut and driver commands */ 6263 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6264 case CMD_START_SUPPLICANT: 6265 case CMD_STOP_SUPPLICANT: 6266 case CMD_START_AP: 6267 case CMD_STOP_AP: 6268 case CMD_START_DRIVER: 6269 case CMD_STOP_DRIVER: 6270 case CMD_SET_OPERATIONAL_MODE: 6271 case CMD_SET_COUNTRY_CODE: 6272 case CMD_SET_FREQUENCY_BAND: 6273 case CMD_START_PACKET_FILTERING: 6274 case CMD_STOP_PACKET_FILTERING: 6275 case CMD_START_SCAN: 6276 case CMD_DISCONNECT: 6277 case CMD_REASSOCIATE: 6278 case CMD_RECONNECT: 6279 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6280 deferMessage(message); 6281 break; 6282 default: 6283 return NOT_HANDLED; 6284 } 6285 return HANDLED; 6286 } 6287 } 6288 6289 class DriverStoppingState extends State { 6290 @Override 6291 public boolean processMessage(Message message) { 6292 logStateAndMessage(message, getClass().getSimpleName()); 6293 6294 switch(message.what) { 6295 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6296 SupplicantState state = handleSupplicantStateChange(message); 6297 if (state == SupplicantState.INTERFACE_DISABLED) { 6298 transitionTo(mDriverStoppedState); 6299 } 6300 break; 6301 /* Queue driver commands */ 6302 case CMD_START_DRIVER: 6303 case CMD_STOP_DRIVER: 6304 case CMD_SET_COUNTRY_CODE: 6305 case CMD_SET_FREQUENCY_BAND: 6306 case CMD_START_PACKET_FILTERING: 6307 case CMD_STOP_PACKET_FILTERING: 6308 case CMD_START_SCAN: 6309 case CMD_DISCONNECT: 6310 case CMD_REASSOCIATE: 6311 case CMD_RECONNECT: 6312 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6313 deferMessage(message); 6314 break; 6315 default: 6316 return NOT_HANDLED; 6317 } 6318 return HANDLED; 6319 } 6320 } 6321 6322 class DriverStoppedState extends State { 6323 @Override 6324 public boolean processMessage(Message message) { 6325 logStateAndMessage(message, getClass().getSimpleName()); 6326 switch (message.what) { 6327 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6328 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6329 SupplicantState state = stateChangeResult.state; 6330 // A WEXT bug means that we can be back to driver started state 6331 // unexpectedly 6332 if (SupplicantState.isDriverActive(state)) { 6333 transitionTo(mDriverStartedState); 6334 } 6335 break; 6336 case CMD_START_DRIVER: 6337 mWakeLock.acquire(); 6338 mWifiNative.startDriver(); 6339 mWakeLock.release(); 6340 transitionTo(mDriverStartingState); 6341 break; 6342 default: 6343 return NOT_HANDLED; 6344 } 6345 return HANDLED; 6346 } 6347 } 6348 6349 class ScanModeState extends State { 6350 private int mLastOperationMode; 6351 @Override 6352 public void enter() { 6353 mLastOperationMode = mOperationalMode; 6354 } 6355 @Override 6356 public boolean processMessage(Message message) { 6357 logStateAndMessage(message, getClass().getSimpleName()); 6358 6359 switch(message.what) { 6360 case CMD_SET_OPERATIONAL_MODE: 6361 if (message.arg1 == CONNECT_MODE) { 6362 6363 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6364 setWifiState(WIFI_STATE_ENABLED); 6365 // Load and re-enable networks when going back to enabled state 6366 // This is essential for networks to show up after restore 6367 mWifiConfigStore.loadAndEnableAllNetworks(); 6368 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6369 } else { 6370 mWifiConfigStore.enableAllNetworks(); 6371 } 6372 6373 // Try autojoining with recent network already present in the cache 6374 // If none are found then trigger a scan which will trigger autojoin 6375 // upon reception of scan results event 6376 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6377 startScan(ENABLE_WIFI, 0, null, null); 6378 } 6379 6380 // Loose last selection choice since user toggled WiFi 6381 mWifiConfigStore. 6382 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6383 6384 mOperationalMode = CONNECT_MODE; 6385 transitionTo(mDisconnectedState); 6386 } else { 6387 // Nothing to do 6388 return HANDLED; 6389 } 6390 break; 6391 // Handle scan. All the connection related commands are 6392 // handled only in ConnectModeState 6393 case CMD_START_SCAN: 6394 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6395 break; 6396 default: 6397 return NOT_HANDLED; 6398 } 6399 return HANDLED; 6400 } 6401 } 6402 6403 6404 String smToString(Message message) { 6405 return smToString(message.what); 6406 } 6407 6408 String smToString(int what) { 6409 String s = "unknown"; 6410 switch (what) { 6411 case WifiMonitor.DRIVER_HUNG_EVENT: 6412 s = "DRIVER_HUNG_EVENT"; 6413 break; 6414 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6415 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6416 break; 6417 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6418 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6419 break; 6420 case CMD_SET_FREQUENCY_BAND: 6421 s = "CMD_SET_FREQUENCY_BAND"; 6422 break; 6423 case CMD_DELAYED_NETWORK_DISCONNECT: 6424 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6425 break; 6426 case CMD_TEST_NETWORK_DISCONNECT: 6427 s = "CMD_TEST_NETWORK_DISCONNECT"; 6428 break; 6429 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6430 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6431 break; 6432 case CMD_DISABLE_EPHEMERAL_NETWORK: 6433 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6434 break; 6435 case CMD_START_DRIVER: 6436 s = "CMD_START_DRIVER"; 6437 break; 6438 case CMD_STOP_DRIVER: 6439 s = "CMD_STOP_DRIVER"; 6440 break; 6441 case CMD_STOP_SUPPLICANT: 6442 s = "CMD_STOP_SUPPLICANT"; 6443 break; 6444 case CMD_STOP_SUPPLICANT_FAILED: 6445 s = "CMD_STOP_SUPPLICANT_FAILED"; 6446 break; 6447 case CMD_START_SUPPLICANT: 6448 s = "CMD_START_SUPPLICANT"; 6449 break; 6450 case CMD_REQUEST_AP_CONFIG: 6451 s = "CMD_REQUEST_AP_CONFIG"; 6452 break; 6453 case CMD_RESPONSE_AP_CONFIG: 6454 s = "CMD_RESPONSE_AP_CONFIG"; 6455 break; 6456 case CMD_TETHER_STATE_CHANGE: 6457 s = "CMD_TETHER_STATE_CHANGE"; 6458 break; 6459 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6460 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6461 break; 6462 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6463 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6464 break; 6465 case CMD_ADD_OR_UPDATE_NETWORK: 6466 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6467 break; 6468 case CMD_REMOVE_NETWORK: 6469 s = "CMD_REMOVE_NETWORK"; 6470 break; 6471 case CMD_ENABLE_NETWORK: 6472 s = "CMD_ENABLE_NETWORK"; 6473 break; 6474 case CMD_ENABLE_ALL_NETWORKS: 6475 s = "CMD_ENABLE_ALL_NETWORKS"; 6476 break; 6477 case CMD_AUTO_CONNECT: 6478 s = "CMD_AUTO_CONNECT"; 6479 break; 6480 case CMD_AUTO_ROAM: 6481 s = "CMD_AUTO_ROAM"; 6482 break; 6483 case CMD_AUTO_SAVE_NETWORK: 6484 s = "CMD_AUTO_SAVE_NETWORK"; 6485 break; 6486 case CMD_BOOT_COMPLETED: 6487 s = "CMD_BOOT_COMPLETED"; 6488 break; 6489 case DhcpStateMachine.CMD_START_DHCP: 6490 s = "CMD_START_DHCP"; 6491 break; 6492 case DhcpStateMachine.CMD_STOP_DHCP: 6493 s = "CMD_STOP_DHCP"; 6494 break; 6495 case DhcpStateMachine.CMD_RENEW_DHCP: 6496 s = "CMD_RENEW_DHCP"; 6497 break; 6498 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6499 s = "CMD_PRE_DHCP_ACTION"; 6500 break; 6501 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6502 s = "CMD_POST_DHCP_ACTION"; 6503 break; 6504 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6505 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6506 break; 6507 case DhcpStateMachine.CMD_ON_QUIT: 6508 s = "CMD_ON_QUIT"; 6509 break; 6510 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6511 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6512 break; 6513 case WifiManager.DISABLE_NETWORK: 6514 s = "WifiManager.DISABLE_NETWORK"; 6515 break; 6516 case CMD_BLACKLIST_NETWORK: 6517 s = "CMD_BLACKLIST_NETWORK"; 6518 break; 6519 case CMD_CLEAR_BLACKLIST: 6520 s = "CMD_CLEAR_BLACKLIST"; 6521 break; 6522 case CMD_SAVE_CONFIG: 6523 s = "CMD_SAVE_CONFIG"; 6524 break; 6525 case CMD_GET_CONFIGURED_NETWORKS: 6526 s = "CMD_GET_CONFIGURED_NETWORKS"; 6527 break; 6528 case CMD_GET_SUPPORTED_FEATURES: 6529 s = "CMD_GET_SUPPORTED_FEATURES"; 6530 break; 6531 case CMD_UNWANTED_NETWORK: 6532 s = "CMD_UNWANTED_NETWORK"; 6533 break; 6534 case CMD_NETWORK_STATUS: 6535 s = "CMD_NETWORK_STATUS"; 6536 break; 6537 case CMD_GET_LINK_LAYER_STATS: 6538 s = "CMD_GET_LINK_LAYER_STATS"; 6539 break; 6540 case CMD_GET_MATCHING_CONFIG: 6541 s = "CMD_GET_MATCHING_CONFIG"; 6542 break; 6543 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6544 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6545 break; 6546 case CMD_DISCONNECT: 6547 s = "CMD_DISCONNECT"; 6548 break; 6549 case CMD_RECONNECT: 6550 s = "CMD_RECONNECT"; 6551 break; 6552 case CMD_REASSOCIATE: 6553 s = "CMD_REASSOCIATE"; 6554 break; 6555 case CMD_GET_CONNECTION_STATISTICS: 6556 s = "CMD_GET_CONNECTION_STATISTICS"; 6557 break; 6558 case CMD_SET_HIGH_PERF_MODE: 6559 s = "CMD_SET_HIGH_PERF_MODE"; 6560 break; 6561 case CMD_SET_COUNTRY_CODE: 6562 s = "CMD_SET_COUNTRY_CODE"; 6563 break; 6564 case CMD_ENABLE_RSSI_POLL: 6565 s = "CMD_ENABLE_RSSI_POLL"; 6566 break; 6567 case CMD_RSSI_POLL: 6568 s = "CMD_RSSI_POLL"; 6569 break; 6570 case CMD_START_PACKET_FILTERING: 6571 s = "CMD_START_PACKET_FILTERING"; 6572 break; 6573 case CMD_STOP_PACKET_FILTERING: 6574 s = "CMD_STOP_PACKET_FILTERING"; 6575 break; 6576 case CMD_SET_SUSPEND_OPT_ENABLED: 6577 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6578 break; 6579 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6580 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6581 break; 6582 case CMD_UPDATE_LINKPROPERTIES: 6583 s = "CMD_UPDATE_LINKPROPERTIES"; 6584 break; 6585 case CMD_RELOAD_TLS_AND_RECONNECT: 6586 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6587 break; 6588 case WifiManager.CONNECT_NETWORK: 6589 s = "CONNECT_NETWORK"; 6590 break; 6591 case WifiManager.SAVE_NETWORK: 6592 s = "SAVE_NETWORK"; 6593 break; 6594 case WifiManager.FORGET_NETWORK: 6595 s = "FORGET_NETWORK"; 6596 break; 6597 case WifiMonitor.SUP_CONNECTION_EVENT: 6598 s = "SUP_CONNECTION_EVENT"; 6599 break; 6600 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6601 s = "SUP_DISCONNECTION_EVENT"; 6602 break; 6603 case WifiMonitor.SCAN_RESULTS_EVENT: 6604 s = "SCAN_RESULTS_EVENT"; 6605 break; 6606 case WifiMonitor.SCAN_FAILED_EVENT: 6607 s = "SCAN_FAILED_EVENT"; 6608 break; 6609 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6610 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6611 break; 6612 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6613 s = "AUTHENTICATION_FAILURE_EVENT"; 6614 break; 6615 case WifiMonitor.SSID_TEMP_DISABLED: 6616 s = "SSID_TEMP_DISABLED"; 6617 break; 6618 case WifiMonitor.SSID_REENABLED: 6619 s = "SSID_REENABLED"; 6620 break; 6621 case WifiMonitor.WPS_SUCCESS_EVENT: 6622 s = "WPS_SUCCESS_EVENT"; 6623 break; 6624 case WifiMonitor.WPS_FAIL_EVENT: 6625 s = "WPS_FAIL_EVENT"; 6626 break; 6627 case WifiMonitor.SUP_REQUEST_IDENTITY: 6628 s = "SUP_REQUEST_IDENTITY"; 6629 break; 6630 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6631 s = "NETWORK_CONNECTION_EVENT"; 6632 break; 6633 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6634 s = "NETWORK_DISCONNECTION_EVENT"; 6635 break; 6636 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6637 s = "ASSOCIATION_REJECTION_EVENT"; 6638 break; 6639 case CMD_SET_OPERATIONAL_MODE: 6640 s = "CMD_SET_OPERATIONAL_MODE"; 6641 break; 6642 case CMD_START_SCAN: 6643 s = "CMD_START_SCAN"; 6644 break; 6645 case CMD_DISABLE_P2P_RSP: 6646 s = "CMD_DISABLE_P2P_RSP"; 6647 break; 6648 case CMD_DISABLE_P2P_REQ: 6649 s = "CMD_DISABLE_P2P_REQ"; 6650 break; 6651 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6652 s = "GOOD_LINK_DETECTED"; 6653 break; 6654 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6655 s = "POOR_LINK_DETECTED"; 6656 break; 6657 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6658 s = "GROUP_CREATING_TIMED_OUT"; 6659 break; 6660 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6661 s = "P2P_CONNECTION_CHANGED"; 6662 break; 6663 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6664 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6665 break; 6666 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6667 s = "P2P.SET_MIRACAST_MODE"; 6668 break; 6669 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6670 s = "P2P.BLOCK_DISCOVERY"; 6671 break; 6672 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6673 s = "P2P.SET_COUNTRY_CODE"; 6674 break; 6675 case WifiManager.CANCEL_WPS: 6676 s = "CANCEL_WPS"; 6677 break; 6678 case WifiManager.CANCEL_WPS_FAILED: 6679 s = "CANCEL_WPS_FAILED"; 6680 break; 6681 case WifiManager.CANCEL_WPS_SUCCEDED: 6682 s = "CANCEL_WPS_SUCCEDED"; 6683 break; 6684 case WifiManager.START_WPS: 6685 s = "START_WPS"; 6686 break; 6687 case WifiManager.START_WPS_SUCCEEDED: 6688 s = "START_WPS_SUCCEEDED"; 6689 break; 6690 case WifiManager.WPS_FAILED: 6691 s = "WPS_FAILED"; 6692 break; 6693 case WifiManager.WPS_COMPLETED: 6694 s = "WPS_COMPLETED"; 6695 break; 6696 case WifiManager.RSSI_PKTCNT_FETCH: 6697 s = "RSSI_PKTCNT_FETCH"; 6698 break; 6699 case CMD_IP_CONFIGURATION_LOST: 6700 s = "CMD_IP_CONFIGURATION_LOST"; 6701 break; 6702 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6703 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6704 break; 6705 case CMD_IP_REACHABILITY_LOST: 6706 s = "CMD_IP_REACHABILITY_LOST"; 6707 break; 6708 case CMD_STATIC_IP_SUCCESS: 6709 s = "CMD_STATIC_IP_SUCCESSFUL"; 6710 break; 6711 case CMD_STATIC_IP_FAILURE: 6712 s = "CMD_STATIC_IP_FAILURE"; 6713 break; 6714 case DhcpStateMachine.DHCP_SUCCESS: 6715 s = "DHCP_SUCCESS"; 6716 break; 6717 case DhcpStateMachine.DHCP_FAILURE: 6718 s = "DHCP_FAILURE"; 6719 break; 6720 case CMD_TARGET_BSSID: 6721 s = "CMD_TARGET_BSSID"; 6722 break; 6723 case CMD_ASSOCIATED_BSSID: 6724 s = "CMD_ASSOCIATED_BSSID"; 6725 break; 6726 case CMD_REMOVE_APP_CONFIGURATIONS: 6727 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6728 break; 6729 case CMD_REMOVE_USER_CONFIGURATIONS: 6730 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6731 break; 6732 case CMD_ROAM_WATCHDOG_TIMER: 6733 s = "CMD_ROAM_WATCHDOG_TIMER"; 6734 break; 6735 case CMD_SCREEN_STATE_CHANGED: 6736 s = "CMD_SCREEN_STATE_CHANGED"; 6737 break; 6738 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6739 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6740 break; 6741 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6742 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6743 break; 6744 case CMD_STARTED_PNO_DBG: 6745 s = "CMD_STARTED_PNO_DBG"; 6746 break; 6747 case CMD_STARTED_GSCAN_DBG: 6748 s = "CMD_STARTED_GSCAN_DBG"; 6749 break; 6750 case CMD_PNO_NETWORK_FOUND: 6751 s = "CMD_PNO_NETWORK_FOUND"; 6752 break; 6753 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6754 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6755 break; 6756 default: 6757 s = "what:" + Integer.toString(what); 6758 break; 6759 } 6760 return s; 6761 } 6762 6763 void registerConnected() { 6764 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6765 long now_ms = System.currentTimeMillis(); 6766 // We are switching away from this configuration, 6767 // hence record the time we were connected last 6768 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6769 if (config != null) { 6770 config.lastConnected = System.currentTimeMillis(); 6771 config.autoJoinBailedDueToLowRssi = false; 6772 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6773 config.numConnectionFailures = 0; 6774 config.numIpConfigFailures = 0; 6775 config.numAuthFailures = 0; 6776 config.numAssociation++; 6777 } 6778 mBadLinkspeedcount = 0; 6779 } 6780 } 6781 6782 void registerDisconnected() { 6783 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6784 long now_ms = System.currentTimeMillis(); 6785 // We are switching away from this configuration, 6786 // hence record the time we were connected last 6787 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6788 if (config != null) { 6789 config.lastDisconnected = System.currentTimeMillis(); 6790 if (config.ephemeral) { 6791 // Remove ephemeral WifiConfigurations from file 6792 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6793 } 6794 } 6795 } 6796 } 6797 6798 void noteWifiDisabledWhileAssociated() { 6799 // We got disabled by user while we were associated, make note of it 6800 int rssi = mWifiInfo.getRssi(); 6801 WifiConfiguration config = getCurrentWifiConfiguration(); 6802 if (getCurrentState() == mConnectedState 6803 && rssi != WifiInfo.INVALID_RSSI 6804 && config != null) { 6805 boolean is24GHz = mWifiInfo.is24GHz(); 6806 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6807 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6808 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6809 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6810 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6811 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6812 if (isBadRSSI) { 6813 // Take note that we got disabled while RSSI was Bad 6814 config.numUserTriggeredWifiDisableLowRSSI++; 6815 } else if (isLowRSSI) { 6816 // Take note that we got disabled while RSSI was Low 6817 config.numUserTriggeredWifiDisableBadRSSI++; 6818 } else if (!isHighRSSI) { 6819 // Take note that we got disabled while RSSI was Not high 6820 config.numUserTriggeredWifiDisableNotHighRSSI++; 6821 } 6822 } 6823 } 6824 6825 WifiConfiguration getCurrentWifiConfiguration() { 6826 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6827 return null; 6828 } 6829 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6830 } 6831 6832 ScanResult getCurrentScanResult() { 6833 WifiConfiguration config = getCurrentWifiConfiguration(); 6834 if (config == null) { 6835 return null; 6836 } 6837 String BSSID = mWifiInfo.getBSSID(); 6838 if (BSSID == null) { 6839 BSSID = mTargetRoamBSSID; 6840 } 6841 ScanDetailCache scanDetailCache = 6842 mWifiConfigStore.getScanDetailCache(config); 6843 6844 if (scanDetailCache == null) { 6845 return null; 6846 } 6847 6848 return scanDetailCache.get(BSSID); 6849 } 6850 6851 String getCurrentBSSID() { 6852 if (linkDebouncing) { 6853 return null; 6854 } 6855 return mLastBssid; 6856 } 6857 6858 class ConnectModeState extends State { 6859 6860 @Override 6861 public void enter() { 6862 connectScanningService(); 6863 } 6864 6865 @Override 6866 public boolean processMessage(Message message) { 6867 WifiConfiguration config; 6868 int netId; 6869 boolean ok; 6870 boolean didDisconnect; 6871 String bssid; 6872 String ssid; 6873 NetworkUpdateResult result; 6874 logStateAndMessage(message, getClass().getSimpleName()); 6875 6876 switch (message.what) { 6877 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6878 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6879 didBlackListBSSID = false; 6880 bssid = (String) message.obj; 6881 if (bssid == null || TextUtils.isEmpty(bssid)) { 6882 // If BSSID is null, use the target roam BSSID 6883 bssid = mTargetRoamBSSID; 6884 } 6885 if (bssid != null) { 6886 // If we have a BSSID, tell configStore to black list it 6887 synchronized(mScanResultCache) { 6888 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6889 (mLastNetworkId, bssid, false); 6890 } 6891 } 6892 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6893 break; 6894 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6895 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6896 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6897 break; 6898 case WifiMonitor.SSID_TEMP_DISABLED: 6899 case WifiMonitor.SSID_REENABLED: 6900 String substr = (String) message.obj; 6901 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6902 "temp-disabled" : "re-enabled"; 6903 loge("ConnectModeState SSID state=" + en + " nid=" 6904 + Integer.toString(message.arg1) + " [" + substr + "]"); 6905 synchronized(mScanResultCache) { 6906 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6907 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6908 } 6909 break; 6910 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6911 SupplicantState state = handleSupplicantStateChange(message); 6912 // A driver/firmware hang can now put the interface in a down state. 6913 // We detect the interface going down and recover from it 6914 if (!SupplicantState.isDriverActive(state)) { 6915 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6916 handleNetworkDisconnect(); 6917 } 6918 log("Detected an interface down, restart driver"); 6919 transitionTo(mDriverStoppedState); 6920 sendMessage(CMD_START_DRIVER); 6921 break; 6922 } 6923 6924 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6925 // when authentication times out after a successful connection, 6926 // we can figure this from the supplicant state. If supplicant 6927 // state is DISCONNECTED, but the mNetworkInfo says we are not 6928 // disconnected, we need to handle a disconnection 6929 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6930 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6931 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6932 handleNetworkDisconnect(); 6933 transitionTo(mDisconnectedState); 6934 } 6935 6936 // If we have COMPLETED a connection to a BSSID, start doing 6937 // DNAv4/DNAv6 -style probing for on-link neighbors of 6938 // interest (e.g. routers); harmless if none are configured. 6939 if (state == SupplicantState.COMPLETED) { 6940 if (mIpReachabilityMonitor != null) { 6941 mIpReachabilityMonitor.probeAll(); 6942 } 6943 } 6944 break; 6945 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6946 if (message.arg1 == 1) { 6947 mWifiNative.disconnect(); 6948 mTemporarilyDisconnectWifi = true; 6949 } else { 6950 mWifiNative.reconnect(); 6951 mTemporarilyDisconnectWifi = false; 6952 } 6953 break; 6954 case CMD_ADD_OR_UPDATE_NETWORK: 6955 config = (WifiConfiguration) message.obj; 6956 6957 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6958 loge("Not authorized to update network " 6959 + " config=" + config.SSID 6960 + " cnid=" + config.networkId 6961 + " uid=" + message.sendingUid); 6962 replyToMessage(message, message.what, FAILURE); 6963 break; 6964 } 6965 6966 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6967 if (res < 0) { 6968 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6969 } else { 6970 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6971 if (curConfig != null && config != null) { 6972 if (curConfig.priority < config.priority 6973 && config.status == WifiConfiguration.Status.ENABLED) { 6974 // Interpret this as a connect attempt 6975 // Set the last selected configuration so as to allow the system to 6976 // stick the last user choice without persisting the choice 6977 mWifiConfigStore.setLastSelectedConfiguration(res); 6978 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 6979 mWifiConfigStore.writeKnownNetworkHistory(false); 6980 6981 // Remember time of last connection attempt 6982 lastConnectAttempt = System.currentTimeMillis(); 6983 6984 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6985 6986 // As a courtesy to the caller, trigger a scan now 6987 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6988 } 6989 } 6990 } 6991 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6992 break; 6993 case CMD_REMOVE_NETWORK: 6994 netId = message.arg1; 6995 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 6996 loge("Not authorized to remove network " 6997 + " cnid=" + netId 6998 + " uid=" + message.sendingUid); 6999 replyToMessage(message, message.what, FAILURE); 7000 break; 7001 } 7002 7003 ok = mWifiConfigStore.removeNetwork(message.arg1); 7004 if (!ok) { 7005 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7006 } 7007 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7008 break; 7009 case CMD_ENABLE_NETWORK: 7010 boolean others = message.arg2 == 1; 7011 // Tell autojoin the user did try to select to that network 7012 // However, do NOT persist the choice by bumping the priority of the network 7013 if (others) { 7014 mWifiAutoJoinController. 7015 updateConfigurationHistory(message.arg1, true, false); 7016 // Set the last selected configuration so as to allow the system to 7017 // stick the last user choice without persisting the choice 7018 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 7019 7020 // Remember time of last connection attempt 7021 lastConnectAttempt = System.currentTimeMillis(); 7022 7023 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7024 } 7025 // Cancel auto roam requests 7026 autoRoamSetBSSID(message.arg1, "any"); 7027 7028 int uid = message.sendingUid; 7029 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1, uid); 7030 if (!ok) { 7031 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7032 } 7033 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7034 break; 7035 case CMD_ENABLE_ALL_NETWORKS: 7036 long time = android.os.SystemClock.elapsedRealtime(); 7037 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7038 mWifiConfigStore.enableAllNetworks(); 7039 mLastEnableAllNetworksTime = time; 7040 } 7041 break; 7042 case WifiManager.DISABLE_NETWORK: 7043 if (mWifiConfigStore.disableNetwork(message.arg1, 7044 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7045 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7046 } else { 7047 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7048 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7049 WifiManager.ERROR); 7050 } 7051 break; 7052 case CMD_DISABLE_EPHEMERAL_NETWORK: 7053 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7054 if (config != null) { 7055 if (config.networkId == mLastNetworkId) { 7056 // Disconnect and let autojoin reselect a new network 7057 sendMessage(CMD_DISCONNECT); 7058 } 7059 } 7060 break; 7061 case CMD_BLACKLIST_NETWORK: 7062 mWifiConfigStore.blackListBssid((String) message.obj); 7063 break; 7064 case CMD_CLEAR_BLACKLIST: 7065 mWifiConfigStore.clearBssidBlacklist(); 7066 break; 7067 case CMD_SAVE_CONFIG: 7068 ok = mWifiConfigStore.saveConfig(); 7069 7070 if (DBG) loge("wifistatemachine did save config " + ok); 7071 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7072 7073 // Inform the backup manager about a data change 7074 IBackupManager ibm = IBackupManager.Stub.asInterface( 7075 ServiceManager.getService(Context.BACKUP_SERVICE)); 7076 if (ibm != null) { 7077 try { 7078 ibm.dataChanged("com.android.providers.settings"); 7079 } catch (Exception e) { 7080 // Try again later 7081 } 7082 } 7083 break; 7084 case CMD_GET_CONFIGURED_NETWORKS: 7085 replyToMessage(message, message.what, 7086 mWifiConfigStore.getConfiguredNetworks()); 7087 break; 7088 case WifiMonitor.SUP_REQUEST_IDENTITY: 7089 int networkId = message.arg2; 7090 boolean identitySent = false; 7091 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7092 7093 if (targetWificonfiguration != null 7094 && targetWificonfiguration.enterpriseConfig != null) { 7095 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7096 } 7097 7098 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7099 if (targetWificonfiguration != null 7100 && targetWificonfiguration.networkId == networkId 7101 && targetWificonfiguration.allowedKeyManagement 7102 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7103 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7104 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7105 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7106 TelephonyManager tm = (TelephonyManager) 7107 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7108 if (tm != null) { 7109 String imsi = tm.getSubscriberId(); 7110 String mccMnc = ""; 7111 7112 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7113 mccMnc = tm.getSimOperator(); 7114 7115 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7116 7117 if (!identity.isEmpty()) { 7118 mWifiNative.simIdentityResponse(networkId, identity); 7119 identitySent = true; 7120 } 7121 } 7122 } 7123 if (!identitySent) { 7124 // Supplicant lacks credentials to connect to that network, hence black list 7125 ssid = (String) message.obj; 7126 if (targetWificonfiguration != null && ssid != null 7127 && targetWificonfiguration.SSID != null 7128 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7129 mWifiConfigStore.handleSSIDStateChange( 7130 targetWificonfiguration.networkId, false, 7131 "AUTH_FAILED no identity", null); 7132 } 7133 // Disconnect now, as we don't have any way to fullfill 7134 // the supplicant request. 7135 mWifiConfigStore.setLastSelectedConfiguration( 7136 WifiConfiguration.INVALID_NETWORK_ID); 7137 mWifiNative.disconnect(); 7138 } 7139 break; 7140 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7141 logd("Received SUP_REQUEST_SIM_AUTH"); 7142 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7143 if (requestData != null) { 7144 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7145 handleGsmAuthRequest(requestData); 7146 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7147 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7148 handle3GAuthRequest(requestData); 7149 } 7150 } else { 7151 loge("Invalid sim auth request"); 7152 } 7153 break; 7154 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7155 replyToMessage(message, message.what, 7156 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7157 break; 7158 case CMD_GET_MATCHING_CONFIG: 7159 replyToMessage(message, message.what, 7160 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7161 break; 7162 /* Do a redundant disconnect without transition */ 7163 case CMD_DISCONNECT: 7164 mWifiConfigStore.setLastSelectedConfiguration 7165 (WifiConfiguration.INVALID_NETWORK_ID); 7166 mWifiNative.disconnect(); 7167 break; 7168 case CMD_RECONNECT: 7169 mWifiAutoJoinController.attemptAutoJoin(); 7170 break; 7171 case CMD_REASSOCIATE: 7172 lastConnectAttempt = System.currentTimeMillis(); 7173 mWifiNative.reassociate(); 7174 break; 7175 case CMD_RELOAD_TLS_AND_RECONNECT: 7176 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7177 logd("Reconnecting to give a chance to un-connected TLS networks"); 7178 mWifiNative.disconnect(); 7179 lastConnectAttempt = System.currentTimeMillis(); 7180 mWifiNative.reconnect(); 7181 } 7182 break; 7183 case CMD_AUTO_ROAM: 7184 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7185 return HANDLED; 7186 case CMD_AUTO_CONNECT: 7187 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7188 * associated status to the STATUS command but somehow-someplace still thinks 7189 * it is associated and thus will ignore select/reconnect command with 7190 * following message: 7191 * "Already associated with the selected network - do nothing" 7192 * 7193 * Hence, sends a disconnect to supplicant first. 7194 */ 7195 didDisconnect = false; 7196 if (getCurrentState() != mDisconnectedState) { 7197 /** Supplicant will ignore the reconnect if we are currently associated, 7198 * hence trigger a disconnect 7199 */ 7200 didDisconnect = true; 7201 mWifiNative.disconnect(); 7202 } 7203 7204 /* connect command coming from auto-join */ 7205 config = (WifiConfiguration) message.obj; 7206 netId = message.arg1; 7207 int roam = message.arg2; 7208 loge("CMD_AUTO_CONNECT sup state " 7209 + mSupplicantStateTracker.getSupplicantStateName() 7210 + " my state " + getCurrentState().getName() 7211 + " nid=" + Integer.toString(netId) 7212 + " roam=" + Integer.toString(roam)); 7213 if (config == null) { 7214 loge("AUTO_CONNECT and no config, bail out..."); 7215 break; 7216 } 7217 7218 /* Make sure we cancel any previous roam request */ 7219 autoRoamSetBSSID(netId, config.BSSID); 7220 7221 /* Save the network config */ 7222 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 7223 + " nid=" + Integer.toString(netId)); 7224 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7225 netId = result.getNetworkId(); 7226 loge("CMD_AUTO_CONNECT did save config -> " 7227 + " nid=" + Integer.toString(netId)); 7228 7229 if (deferForUserInput(message, netId, false)) { 7230 break; 7231 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7232 WifiConfiguration.USER_BANNED) { 7233 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7234 WifiManager.NOT_AUTHORIZED); 7235 break; 7236 } 7237 7238 // Make sure the network is enabled, since supplicant will not reenable it 7239 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7240 7241 // If we're autojoining a network that the user or an app explicitly selected, 7242 // keep track of the UID that selected it. 7243 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7244 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7245 7246 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7247 lastConnectUid) && mWifiNative.reconnect()) { 7248 lastConnectAttempt = System.currentTimeMillis(); 7249 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7250 config = mWifiConfigStore.getWifiConfiguration(netId); 7251 if (config != null 7252 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7253 // If we autojoined a different config than the user selected one, 7254 // it means we could not see the last user selection, 7255 // or that the last user selection was faulty and ended up blacklisted 7256 // for some reason (in which case the user is notified with an error 7257 // message in the Wifi picker), and thus we managed to auto-join away 7258 // from the selected config. -> in that case we need to forget 7259 // the selection because we don't want to abruptly switch back to it. 7260 // 7261 // Note that the user selection is also forgotten after a period of time 7262 // during which the device has been disconnected. 7263 // The default value is 30 minutes : see the code path at bottom of 7264 // setScanResults() function. 7265 mWifiConfigStore. 7266 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7267 } 7268 mAutoRoaming = roam; 7269 if (isRoaming() || linkDebouncing) { 7270 transitionTo(mRoamingState); 7271 } else if (didDisconnect) { 7272 transitionTo(mDisconnectingState); 7273 } else { 7274 /* Already in disconnected state, nothing to change */ 7275 } 7276 } else { 7277 loge("Failed to connect config: " + config + " netId: " + netId); 7278 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7279 WifiManager.ERROR); 7280 break; 7281 } 7282 break; 7283 case CMD_REMOVE_APP_CONFIGURATIONS: 7284 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7285 break; 7286 case CMD_REMOVE_USER_CONFIGURATIONS: 7287 mWifiConfigStore.removeNetworksForUser(message.arg1); 7288 break; 7289 case WifiManager.CONNECT_NETWORK: 7290 /** 7291 * The connect message can contain a network id passed as arg1 on message or 7292 * or a config passed as obj on message. 7293 * For a new network, a config is passed to create and connect. 7294 * For an existing network, a network id is passed 7295 */ 7296 netId = message.arg1; 7297 config = (WifiConfiguration) message.obj; 7298 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7299 boolean updatedExisting = false; 7300 7301 /* Save the network config */ 7302 if (config != null) { 7303 if (!recordUidIfAuthorized(config, message.sendingUid)) { 7304 loge("Not authorized to update network " 7305 + " config=" + config.SSID 7306 + " cnid=" + config.networkId 7307 + " uid=" + message.sendingUid); 7308 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7309 WifiManager.NOT_AUTHORIZED); 7310 break; 7311 } 7312 7313 String configKey = config.configKey(true /* allowCached */); 7314 WifiConfiguration savedConfig = 7315 mWifiConfigStore.getWifiConfiguration(configKey); 7316 if (savedConfig != null) { 7317 // There is an existing config with this netId, but it wasn't exposed 7318 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7319 // getConfiguredNetworks). Remove those bits and update the config. 7320 config = savedConfig; 7321 loge("CONNECT_NETWORK updating existing config with id=" + 7322 config.networkId + " configKey=" + configKey); 7323 config.ephemeral = false; 7324 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7325 updatedExisting = true; 7326 } 7327 7328 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7329 netId = result.getNetworkId(); 7330 } 7331 config = mWifiConfigStore.getWifiConfiguration(netId); 7332 7333 if (config == null) { 7334 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7335 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7336 + getCurrentState().getName()); 7337 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7338 WifiManager.ERROR); 7339 break; 7340 } else { 7341 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7342 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 7343 + " config=" + config.SSID 7344 + " cnid=" + config.networkId 7345 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7346 + " my state " + getCurrentState().getName() 7347 + " uid = " + message.sendingUid 7348 + wasSkipped); 7349 } 7350 7351 autoRoamSetBSSID(netId, "any"); 7352 7353 if (message.sendingUid == Process.WIFI_UID 7354 || message.sendingUid == Process.SYSTEM_UID) { 7355 // As a sanity measure, clear the BSSID in the supplicant network block. 7356 // If system or Wifi Settings want to connect, they will not 7357 // specify the BSSID. 7358 // If an app however had added a BSSID to this configuration, and the BSSID 7359 // was wrong, Then we would forever fail to connect until that BSSID 7360 // is cleaned up. 7361 clearConfigBSSID(config, "CONNECT_NETWORK"); 7362 } 7363 7364 if (deferForUserInput(message, netId, true)) { 7365 break; 7366 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7367 WifiConfiguration.USER_BANNED) { 7368 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7369 WifiManager.NOT_AUTHORIZED); 7370 break; 7371 } 7372 7373 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7374 7375 /* Tell autojoin the user did try to connect to that network if from settings */ 7376 boolean persist = 7377 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7378 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7379 7380 mWifiConfigStore.setLastSelectedConfiguration(netId); 7381 7382 didDisconnect = false; 7383 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7384 && mLastNetworkId != netId) { 7385 /** Supplicant will ignore the reconnect if we are currently associated, 7386 * hence trigger a disconnect 7387 */ 7388 didDisconnect = true; 7389 mWifiNative.disconnect(); 7390 } 7391 7392 // Make sure the network is enabled, since supplicant will not reenable it 7393 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7394 7395 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7396 message.sendingUid) && mWifiNative.reconnect()) { 7397 lastConnectAttempt = System.currentTimeMillis(); 7398 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7399 7400 /* The state tracker handles enabling networks upon completion/failure */ 7401 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7402 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7403 if (didDisconnect) { 7404 /* Expect a disconnection from the old connection */ 7405 transitionTo(mDisconnectingState); 7406 } else if (updatedExisting && getCurrentState() == mConnectedState && 7407 getCurrentWifiConfiguration().networkId == netId) { 7408 // Update the current set of network capabilities, but stay in the 7409 // current state. 7410 updateCapabilities(config); 7411 } else { 7412 /** 7413 * Directly go to disconnected state where we 7414 * process the connection events from supplicant 7415 **/ 7416 transitionTo(mDisconnectedState); 7417 } 7418 } else { 7419 loge("Failed to connect config: " + config + " netId: " + netId); 7420 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7421 WifiManager.ERROR); 7422 break; 7423 } 7424 break; 7425 case WifiManager.SAVE_NETWORK: 7426 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7427 // Fall thru 7428 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7429 lastSavedConfigurationAttempt = null; // Used for debug 7430 config = (WifiConfiguration) message.obj; 7431 if (config == null) { 7432 loge("ERROR: SAVE_NETWORK with null configuration" 7433 + mSupplicantStateTracker.getSupplicantStateName() 7434 + " my state " + getCurrentState().getName()); 7435 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7436 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7437 WifiManager.ERROR); 7438 break; 7439 } 7440 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7441 int nid = config.networkId; 7442 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7443 + " config=" + config.SSID 7444 + " nid=" + config.networkId 7445 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7446 + " my state " + getCurrentState().getName()); 7447 7448 // Only record the uid if this is user initiated 7449 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7450 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid)) { 7451 loge("Not authorized to update network " 7452 + " config=" + config.SSID 7453 + " cnid=" + config.networkId 7454 + " uid=" + message.sendingUid); 7455 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7456 WifiManager.NOT_AUTHORIZED); 7457 break; 7458 } 7459 7460 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7461 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7462 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7463 if (result.hasIpChanged()) { 7464 // The currently connection configuration was changed 7465 // We switched from DHCP to static or from static to DHCP, or the 7466 // static IP address has changed. 7467 log("Reconfiguring IP on connection"); 7468 // TODO: clear addresses and disable IPv6 7469 // to simplify obtainingIpState. 7470 transitionTo(mObtainingIpState); 7471 } 7472 if (result.hasProxyChanged()) { 7473 log("Reconfiguring proxy on connection"); 7474 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7475 } 7476 } 7477 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7478 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7479 7480 if (VDBG) { 7481 loge("Success save network nid=" 7482 + Integer.toString(result.getNetworkId())); 7483 } 7484 7485 synchronized(mScanResultCache) { 7486 /** 7487 * If the command comes from WifiManager, then 7488 * tell autojoin the user did try to modify and save that network, 7489 * and interpret the SAVE_NETWORK as a request to connect 7490 */ 7491 boolean user = message.what == WifiManager.SAVE_NETWORK; 7492 7493 // Did this connect come from settings 7494 boolean persistConnect = 7495 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7496 7497 if (user) { 7498 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7499 mWifiConfigStore.writeKnownNetworkHistory(false); 7500 } 7501 7502 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7503 , user, persistConnect); 7504 mWifiAutoJoinController.attemptAutoJoin(); 7505 } 7506 } else { 7507 loge("Failed to save network"); 7508 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7509 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7510 WifiManager.ERROR); 7511 } 7512 break; 7513 case WifiManager.FORGET_NETWORK: 7514 // Debug only, remember last configuration that was forgotten 7515 WifiConfiguration toRemove 7516 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7517 if (toRemove == null) { 7518 lastForgetConfigurationAttempt = null; 7519 } else { 7520 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7521 } 7522 // check that the caller owns this network 7523 netId = message.arg1; 7524 7525 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 7526 loge("Not authorized to forget network " 7527 + " cnid=" + netId 7528 + " uid=" + message.sendingUid); 7529 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7530 WifiManager.NOT_AUTHORIZED); 7531 break; 7532 } 7533 7534 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7535 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7536 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7537 (WifiConfiguration) message.obj); 7538 } else { 7539 loge("Failed to forget network"); 7540 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7541 WifiManager.ERROR); 7542 } 7543 break; 7544 case WifiManager.START_WPS: 7545 WpsInfo wpsInfo = (WpsInfo) message.obj; 7546 WpsResult wpsResult; 7547 switch (wpsInfo.setup) { 7548 case WpsInfo.PBC: 7549 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7550 break; 7551 case WpsInfo.KEYPAD: 7552 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7553 break; 7554 case WpsInfo.DISPLAY: 7555 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7556 break; 7557 default: 7558 wpsResult = new WpsResult(Status.FAILURE); 7559 loge("Invalid setup for WPS"); 7560 break; 7561 } 7562 mWifiConfigStore.setLastSelectedConfiguration 7563 (WifiConfiguration.INVALID_NETWORK_ID); 7564 if (wpsResult.status == Status.SUCCESS) { 7565 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7566 transitionTo(mWpsRunningState); 7567 } else { 7568 loge("Failed to start WPS with config " + wpsInfo.toString()); 7569 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7570 } 7571 break; 7572 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7573 if (DBG) log("Network connection established"); 7574 mLastNetworkId = message.arg1; 7575 mLastBssid = (String) message.obj; 7576 7577 mWifiInfo.setBSSID(mLastBssid); 7578 mWifiInfo.setNetworkId(mLastNetworkId); 7579 7580 sendNetworkStateChangeBroadcast(mLastBssid); 7581 transitionTo(mObtainingIpState); 7582 break; 7583 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7584 // Calling handleNetworkDisconnect here is redundant because we might already 7585 // have called it when leaving L2ConnectedState to go to disconnecting state 7586 // or thru other path 7587 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7588 // if they are valid, and only in this case call handleNEtworkDisconnect, 7589 // TODO: this should be fixed for a L MR release 7590 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7591 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7592 // at the chip etc... 7593 if (DBG) log("ConnectModeState: Network connection lost "); 7594 handleNetworkDisconnect(); 7595 transitionTo(mDisconnectedState); 7596 break; 7597 case CMD_PNO_NETWORK_FOUND: 7598 processPnoNetworkFound((ScanResult[])message.obj); 7599 break; 7600 default: 7601 return NOT_HANDLED; 7602 } 7603 return HANDLED; 7604 } 7605 } 7606 7607 private void updateCapabilities(WifiConfiguration config) { 7608 if (config.ephemeral) { 7609 mNetworkCapabilities.removeCapability( 7610 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7611 } else { 7612 mNetworkCapabilities.addCapability( 7613 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7614 } 7615 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7616 } 7617 7618 private class WifiNetworkAgent extends NetworkAgent { 7619 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7620 NetworkCapabilities nc, LinkProperties lp, int score) { 7621 super(l, c, TAG, ni, nc, lp, score); 7622 } 7623 protected void unwanted() { 7624 // Ignore if we're not the current networkAgent. 7625 if (this != mNetworkAgent) return; 7626 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7627 + Integer.toString(mWifiInfo.score)); 7628 unwantedNetwork(network_status_unwanted_disconnect); 7629 } 7630 7631 @Override 7632 protected void networkStatus(int status) { 7633 if (this != mNetworkAgent) return; 7634 if (status == NetworkAgent.INVALID_NETWORK) { 7635 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7636 + Integer.toString(mWifiInfo.score)); 7637 unwantedNetwork(network_status_unwanted_disable_autojoin); 7638 } else if (status == NetworkAgent.VALID_NETWORK) { 7639 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7640 + Integer.toString(mWifiInfo.score)); 7641 doNetworkStatus(status); 7642 } 7643 } 7644 7645 @Override 7646 protected void saveAcceptUnvalidated(boolean accept) { 7647 if (this != mNetworkAgent) return; 7648 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7649 } 7650 } 7651 7652 void unwantedNetwork(int reason) { 7653 sendMessage(CMD_UNWANTED_NETWORK, reason); 7654 } 7655 7656 void doNetworkStatus(int status) { 7657 sendMessage(CMD_NETWORK_STATUS, status); 7658 } 7659 7660 // rfc4186 & rfc4187: 7661 // create Permanent Identity base on IMSI, 7662 // identity = usernam@realm 7663 // with username = prefix | IMSI 7664 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7665 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7666 String mcc; 7667 String mnc; 7668 String prefix; 7669 7670 if (imsi == null || imsi.isEmpty()) 7671 return ""; 7672 7673 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7674 prefix = "1"; 7675 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7676 prefix = "0"; 7677 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7678 prefix = "6"; 7679 else // not a valide EapMethod 7680 return ""; 7681 7682 /* extract mcc & mnc from mccMnc */ 7683 if (mccMnc != null && !mccMnc.isEmpty()) { 7684 mcc = mccMnc.substring(0, 3); 7685 mnc = mccMnc.substring(3); 7686 if (mnc.length() == 2) 7687 mnc = "0" + mnc; 7688 } else { 7689 // extract mcc & mnc from IMSI, assume mnc size is 3 7690 mcc = imsi.substring(0, 3); 7691 mnc = imsi.substring(3, 6); 7692 } 7693 7694 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7695 } 7696 7697 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7698 if (config == null) 7699 return false; 7700 7701 // We are still seeing a fairly high power consumption triggered by autojoin scans 7702 // Hence do partial scans only for PSK configuration that are roamable since the 7703 // primary purpose of the partial scans is roaming. 7704 // Full badn scans with exponential backoff for the purpose or extended roaming and 7705 // network switching are performed unconditionally. 7706 ScanDetailCache scanDetailCache = 7707 mWifiConfigStore.getScanDetailCache(config); 7708 if (scanDetailCache == null 7709 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7710 || scanDetailCache.size() > 6) { 7711 //return true but to not trigger the scan 7712 return true; 7713 } 7714 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7715 ONE_HOUR_MILLI, restrictChannelList); 7716 if (channels != null && channels.size() != 0) { 7717 StringBuilder freqs = new StringBuilder(); 7718 boolean first = true; 7719 for (Integer channel : channels) { 7720 if (!first) 7721 freqs.append(","); 7722 freqs.append(channel.toString()); 7723 first = false; 7724 } 7725 //if (DBG) { 7726 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7727 //} 7728 // Call wifi native to start the scan 7729 if (startScanNative( 7730 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7731 freqs.toString())) { 7732 // Only count battery consumption if scan request is accepted 7733 noteScanStart(SCAN_ALARM_SOURCE, null); 7734 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7735 } else { 7736 // used for debug only, mark scan as failed 7737 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7738 } 7739 return true; 7740 } else { 7741 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7742 return false; 7743 } 7744 } 7745 7746 void clearCurrentConfigBSSID(String dbg) { 7747 // Clear the bssid in the current config's network block 7748 WifiConfiguration config = getCurrentWifiConfiguration(); 7749 if (config == null) 7750 return; 7751 clearConfigBSSID(config, dbg); 7752 } 7753 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7754 if (config == null) 7755 return; 7756 if (DBG) { 7757 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7758 + " config.bssid " + config.BSSID); 7759 } 7760 config.autoJoinBSSID = "any"; 7761 config.BSSID = "any"; 7762 if (DBG) { 7763 loge(dbg + " " + config.SSID 7764 + " nid=" + Integer.toString(config.networkId)); 7765 } 7766 mWifiConfigStore.saveWifiConfigBSSID(config); 7767 } 7768 7769 class L2ConnectedState extends State { 7770 @Override 7771 public void enter() { 7772 mRssiPollToken++; 7773 if (mEnableRssiPolling) { 7774 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7775 } 7776 if (mNetworkAgent != null) { 7777 loge("Have NetworkAgent when entering L2Connected"); 7778 setNetworkDetailedState(DetailedState.DISCONNECTED); 7779 } 7780 setNetworkDetailedState(DetailedState.CONNECTING); 7781 7782 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 7783 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7784 } 7785 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7786 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7787 mLinkProperties, 60); 7788 7789 // We must clear the config BSSID, as the wifi chipset may decide to roam 7790 // from this point on and having the BSSID specified in the network block would 7791 // cause the roam to faile and the device to disconnect 7792 clearCurrentConfigBSSID("L2ConnectedState"); 7793 7794 try { 7795 mIpReachabilityMonitor = new IpReachabilityMonitor( 7796 mInterfaceName, 7797 new IpReachabilityMonitor.Callback() { 7798 @Override 7799 public void notifyLost(InetAddress ip, String logMsg) { 7800 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 7801 } 7802 }); 7803 } catch (IllegalArgumentException e) { 7804 Log.wtf("Failed to create IpReachabilityMonitor", e); 7805 } 7806 } 7807 7808 @Override 7809 public void exit() { 7810 if (mIpReachabilityMonitor != null) { 7811 mIpReachabilityMonitor.stop(); 7812 mIpReachabilityMonitor = null; 7813 } 7814 7815 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7816 // Bug: 15347363 7817 // For paranoia's sake, call handleNetworkDisconnect 7818 // only if BSSID is null or last networkId 7819 // is not invalid. 7820 if (DBG) { 7821 StringBuilder sb = new StringBuilder(); 7822 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7823 if (mLastBssid !=null) { 7824 sb.append(" ").append(mLastBssid); 7825 } 7826 } 7827 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7828 handleNetworkDisconnect(); 7829 } 7830 } 7831 7832 @Override 7833 public boolean processMessage(Message message) { 7834 logStateAndMessage(message, getClass().getSimpleName()); 7835 7836 switch (message.what) { 7837 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7838 handlePreDhcpSetup(); 7839 break; 7840 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7841 handlePostDhcpSetup(); 7842 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7843 if (DBG) log("WifiStateMachine DHCP successful"); 7844 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7845 // We advance to mConnectedState because handleIPv4Success will call 7846 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7847 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7848 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 7849 if (DBG) { 7850 int count = -1; 7851 WifiConfiguration config = getCurrentWifiConfiguration(); 7852 if (config != null) { 7853 count = config.numConnectionFailures; 7854 } 7855 log("WifiStateMachine DHCP failure count=" + count); 7856 } 7857 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7858 // As above, we transition to mDisconnectingState via updateLinkProperties. 7859 } 7860 break; 7861 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7862 handleSuccessfulIpConfiguration(); 7863 sendConnectedState(); 7864 transitionTo(mConnectedState); 7865 break; 7866 case CMD_IP_CONFIGURATION_LOST: 7867 // Get Link layer stats so that we get fresh tx packet counters. 7868 getWifiLinkLayerStats(true); 7869 handleIpConfigurationLost(); 7870 transitionTo(mDisconnectingState); 7871 break; 7872 case CMD_IP_REACHABILITY_LOST: 7873 if (DBG && message.obj != null) log((String) message.obj); 7874 handleIpReachabilityLost(); 7875 transitionTo(mDisconnectingState); 7876 break; 7877 case CMD_DISCONNECT: 7878 mWifiNative.disconnect(); 7879 transitionTo(mDisconnectingState); 7880 break; 7881 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7882 if (message.arg1 == 1) { 7883 mWifiNative.disconnect(); 7884 mTemporarilyDisconnectWifi = true; 7885 transitionTo(mDisconnectingState); 7886 } 7887 break; 7888 case CMD_SET_OPERATIONAL_MODE: 7889 if (message.arg1 != CONNECT_MODE) { 7890 sendMessage(CMD_DISCONNECT); 7891 deferMessage(message); 7892 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7893 noteWifiDisabledWhileAssociated(); 7894 } 7895 } 7896 mWifiConfigStore. 7897 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7898 break; 7899 case CMD_SET_COUNTRY_CODE: 7900 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7901 deferMessage(message); 7902 break; 7903 case CMD_START_SCAN: 7904 //if (DBG) { 7905 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7906 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7907 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7908 + " targetRoamBSSID=" + mTargetRoamBSSID 7909 + " RSSI=" + mWifiInfo.getRssi()); 7910 //} 7911 if (message.arg1 == SCAN_ALARM_SOURCE) { 7912 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7913 // not be processed) and restart the scan if needed 7914 boolean shouldScan = 7915 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7916 if (!checkAndRestartDelayedScan(message.arg2, 7917 shouldScan, 7918 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 7919 null, null)) { 7920 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7921 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7922 + message.arg1 7923 + " " + message.arg2 + ", " + mDelayedScanCounter 7924 + " -> obsolete"); 7925 return HANDLED; 7926 } 7927 if (mP2pConnected.get()) { 7928 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7929 + message.arg1 7930 + " " + message.arg2 + ", " + mDelayedScanCounter 7931 + " ignore because P2P is connected"); 7932 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7933 return HANDLED; 7934 } 7935 boolean tryFullBandScan = false; 7936 boolean restrictChannelList = false; 7937 long now_ms = System.currentTimeMillis(); 7938 if (DBG) { 7939 loge("WifiStateMachine CMD_START_SCAN with age=" 7940 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7941 + " interval=" + fullBandConnectedTimeIntervalMilli 7942 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7943 } 7944 if (mWifiInfo != null) { 7945 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7946 (now_ms - lastFullBandConnectedTimeMilli) 7947 > fullBandConnectedTimeIntervalMilli) { 7948 if (DBG) { 7949 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7950 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7951 + " interval=" + fullBandConnectedTimeIntervalMilli 7952 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7953 } 7954 tryFullBandScan = true; 7955 } 7956 7957 if (mWifiInfo.txSuccessRate > 7958 mWifiConfigStore.maxTxPacketForFullScans 7959 || mWifiInfo.rxSuccessRate > 7960 mWifiConfigStore.maxRxPacketForFullScans) { 7961 // Too much traffic at the interface, hence no full band scan 7962 if (DBG) { 7963 loge("WifiStateMachine CMD_START_SCAN " + 7964 "prevent full band scan due to pkt rate"); 7965 } 7966 tryFullBandScan = false; 7967 } 7968 7969 if (mWifiInfo.txSuccessRate > 7970 mWifiConfigStore.maxTxPacketForPartialScans 7971 || mWifiInfo.rxSuccessRate > 7972 mWifiConfigStore.maxRxPacketForPartialScans) { 7973 // Don't scan if lots of packets are being sent 7974 restrictChannelList = true; 7975 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7976 if (DBG) { 7977 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7978 + " ...and ignore scans" 7979 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7980 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7981 } 7982 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7983 return HANDLED; 7984 } 7985 } 7986 } 7987 7988 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7989 if (DBG) { 7990 loge("WifiStateMachine CMD_START_SCAN full=" + 7991 tryFullBandScan); 7992 } 7993 if (currentConfiguration != null) { 7994 if (fullBandConnectedTimeIntervalMilli 7995 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 7996 // Sanity 7997 fullBandConnectedTimeIntervalMilli 7998 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 7999 } 8000 if (tryFullBandScan) { 8001 lastFullBandConnectedTimeMilli = now_ms; 8002 if (fullBandConnectedTimeIntervalMilli 8003 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8004 // Increase the interval 8005 fullBandConnectedTimeIntervalMilli 8006 = fullBandConnectedTimeIntervalMilli 8007 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8008 8009 if (DBG) { 8010 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8011 + fullBandConnectedTimeIntervalMilli); 8012 } 8013 } 8014 handleScanRequest( 8015 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8016 } else { 8017 if (!startScanForConfiguration( 8018 currentConfiguration, restrictChannelList)) { 8019 if (DBG) { 8020 loge("WifiStateMachine starting scan, " + 8021 " did not find channels -> full"); 8022 } 8023 lastFullBandConnectedTimeMilli = now_ms; 8024 if (fullBandConnectedTimeIntervalMilli 8025 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8026 // Increase the interval 8027 fullBandConnectedTimeIntervalMilli 8028 = fullBandConnectedTimeIntervalMilli 8029 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8030 8031 if (DBG) { 8032 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8033 + fullBandConnectedTimeIntervalMilli); 8034 } 8035 } 8036 handleScanRequest( 8037 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8038 } 8039 } 8040 8041 } else { 8042 loge("CMD_START_SCAN : connected mode and no configuration"); 8043 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8044 } 8045 } else { 8046 // Not scan alarm source 8047 return NOT_HANDLED; 8048 } 8049 break; 8050 /* Ignore connection to same network */ 8051 case WifiManager.CONNECT_NETWORK: 8052 int netId = message.arg1; 8053 if (mWifiInfo.getNetworkId() == netId) { 8054 break; 8055 } 8056 return NOT_HANDLED; 8057 /* Ignore */ 8058 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8059 break; 8060 case CMD_RSSI_POLL: 8061 if (message.arg1 == mRssiPollToken) { 8062 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8063 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8064 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8065 if (stats != null) { 8066 // Sanity check the results provided by driver 8067 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8068 && (stats.rssi_mgmt == 0 8069 || stats.beacon_rx == 0)) { 8070 stats = null; 8071 } 8072 } 8073 // Get Info and continue polling 8074 fetchRssiLinkSpeedAndFrequencyNative(); 8075 calculateWifiScore(stats); 8076 } 8077 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8078 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8079 8080 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8081 } else { 8082 // Polling has completed 8083 } 8084 break; 8085 case CMD_ENABLE_RSSI_POLL: 8086 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8087 mEnableRssiPolling = (message.arg1 == 1); 8088 } else { 8089 mEnableRssiPolling = false; 8090 } 8091 mRssiPollToken++; 8092 if (mEnableRssiPolling) { 8093 // First poll 8094 fetchRssiLinkSpeedAndFrequencyNative(); 8095 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8096 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8097 } else { 8098 cleanWifiScore(); 8099 } 8100 break; 8101 case WifiManager.RSSI_PKTCNT_FETCH: 8102 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8103 fetchRssiLinkSpeedAndFrequencyNative(); 8104 info.rssi = mWifiInfo.getRssi(); 8105 fetchPktcntNative(info); 8106 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8107 break; 8108 case CMD_DELAYED_NETWORK_DISCONNECT: 8109 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8110 8111 // Ignore if we are not debouncing 8112 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8113 + message.arg1); 8114 return HANDLED; 8115 } else { 8116 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8117 + message.arg1); 8118 8119 linkDebouncing = false; 8120 // If we are still debouncing while this message comes, 8121 // it means we were not able to reconnect within the alloted time 8122 // = LINK_FLAPPING_DEBOUNCE_MSEC 8123 // and thus, trigger a real disconnect 8124 handleNetworkDisconnect(); 8125 transitionTo(mDisconnectedState); 8126 } 8127 break; 8128 case CMD_ASSOCIATED_BSSID: 8129 if ((String) message.obj == null) { 8130 loge("Associated command w/o BSSID"); 8131 break; 8132 } 8133 mLastBssid = (String) message.obj; 8134 if (mLastBssid != null 8135 && (mWifiInfo.getBSSID() == null 8136 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8137 mWifiInfo.setBSSID((String) message.obj); 8138 sendNetworkStateChangeBroadcast(mLastBssid); 8139 } 8140 break; 8141 default: 8142 return NOT_HANDLED; 8143 } 8144 8145 return HANDLED; 8146 } 8147 } 8148 8149 class ObtainingIpState extends State { 8150 @Override 8151 public void enter() { 8152 if (DBG) { 8153 String key = ""; 8154 if (getCurrentWifiConfiguration() != null) { 8155 key = getCurrentWifiConfiguration().configKey(); 8156 } 8157 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8158 + " " + key + " " 8159 + " roam=" + mAutoRoaming 8160 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8161 + " watchdog= " + obtainingIpWatchdogCount); 8162 } 8163 8164 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8165 // We might still be roaming 8166 linkDebouncing = false; 8167 8168 // Send event to CM & network change broadcast 8169 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8170 8171 // We must clear the config BSSID, as the wifi chipset may decide to roam 8172 // from this point on and having the BSSID specified in the network block would 8173 // cause the roam to faile and the device to disconnect 8174 clearCurrentConfigBSSID("ObtainingIpAddress"); 8175 8176 try { 8177 mNwService.enableIpv6(mInterfaceName); 8178 } catch (RemoteException re) { 8179 loge("Failed to enable IPv6: " + re); 8180 } catch (IllegalStateException e) { 8181 loge("Failed to enable IPv6: " + e); 8182 } 8183 8184 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8185 if (isRoaming()) { 8186 renewDhcp(); 8187 } else { 8188 // Remove any IP address on the interface in case we're switching from static 8189 // IP configuration to DHCP. This is safe because if we get here when not 8190 // roaming, we don't have a usable address. 8191 clearIPv4Address(mInterfaceName); 8192 startDhcp(); 8193 } 8194 obtainingIpWatchdogCount++; 8195 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8196 // Get Link layer stats so as we get fresh tx packet counters 8197 getWifiLinkLayerStats(true); 8198 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8199 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8200 } else { 8201 // stop any running dhcp before assigning static IP 8202 stopDhcp(); 8203 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8204 mLastNetworkId); 8205 if (config.ipAddress == null) { 8206 loge("Static IP lacks address"); 8207 sendMessage(CMD_STATIC_IP_FAILURE); 8208 } else { 8209 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8210 ifcg.setLinkAddress(config.ipAddress); 8211 ifcg.setInterfaceUp(); 8212 try { 8213 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8214 if (DBG) log("Static IP configuration succeeded"); 8215 DhcpResults dhcpResults = new DhcpResults(config); 8216 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8217 } catch (RemoteException re) { 8218 loge("Static IP configuration failed: " + re); 8219 sendMessage(CMD_STATIC_IP_FAILURE); 8220 } catch (IllegalStateException e) { 8221 loge("Static IP configuration failed: " + e); 8222 sendMessage(CMD_STATIC_IP_FAILURE); 8223 } 8224 } 8225 } 8226 } 8227 @Override 8228 public boolean processMessage(Message message) { 8229 logStateAndMessage(message, getClass().getSimpleName()); 8230 8231 switch(message.what) { 8232 case CMD_STATIC_IP_SUCCESS: 8233 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8234 break; 8235 case CMD_STATIC_IP_FAILURE: 8236 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8237 break; 8238 case CMD_AUTO_CONNECT: 8239 case CMD_AUTO_ROAM: 8240 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8241 break; 8242 case WifiManager.SAVE_NETWORK: 8243 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8244 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8245 deferMessage(message); 8246 break; 8247 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8248 case CMD_SET_HIGH_PERF_MODE: 8249 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8250 deferMessage(message); 8251 break; 8252 /* Defer scan request since we should not switch to other channels at DHCP */ 8253 case CMD_START_SCAN: 8254 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8255 deferMessage(message); 8256 break; 8257 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8258 if (message.arg1 == obtainingIpWatchdogCount) { 8259 loge("ObtainingIpAddress: Watchdog Triggered, count=" 8260 + obtainingIpWatchdogCount); 8261 handleIpConfigurationLost(); 8262 transitionTo(mDisconnectingState); 8263 break; 8264 } 8265 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8266 break; 8267 default: 8268 return NOT_HANDLED; 8269 } 8270 return HANDLED; 8271 } 8272 } 8273 8274 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8275 // sets mPoorNetworkDetectionEnabled to false. 8276 class VerifyingLinkState extends State { 8277 @Override 8278 public void enter() { 8279 log(getName() + " enter"); 8280 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8281 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8282 sendNetworkStateChangeBroadcast(mLastBssid); 8283 // End roaming 8284 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8285 } 8286 @Override 8287 public boolean processMessage(Message message) { 8288 logStateAndMessage(message, getClass().getSimpleName()); 8289 8290 switch (message.what) { 8291 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8292 // Stay here 8293 log(getName() + " POOR_LINK_DETECTED: no transition"); 8294 break; 8295 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8296 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8297 sendConnectedState(); 8298 transitionTo(mConnectedState); 8299 break; 8300 default: 8301 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8302 return NOT_HANDLED; 8303 } 8304 return HANDLED; 8305 } 8306 } 8307 8308 private void sendConnectedState() { 8309 // If this network was explicitly selected by the user, evaluate whether to call 8310 // explicitlySelected() so the system can treat it appropriately. 8311 WifiConfiguration config = getCurrentWifiConfiguration(); 8312 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8313 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8314 if (DBG) { 8315 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8316 } 8317 if (prompt) { 8318 // Selected by the user via Settings or QuickSettings. If this network has Internet 8319 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8320 // really want to switch, or has already confirmed and selected "Don't ask again". 8321 if (DBG) { 8322 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8323 } 8324 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8325 } 8326 } 8327 8328 setNetworkDetailedState(DetailedState.CONNECTED); 8329 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8330 sendNetworkStateChangeBroadcast(mLastBssid); 8331 } 8332 8333 class RoamingState extends State { 8334 boolean mAssociated; 8335 @Override 8336 public void enter() { 8337 if (DBG) { 8338 log("RoamingState Enter" 8339 + " mScreenOn=" + mScreenOn ); 8340 } 8341 setScanAlarm(false); 8342 8343 // Make sure we disconnect if roaming fails 8344 roamWatchdogCount++; 8345 loge("Start Roam Watchdog " + roamWatchdogCount); 8346 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8347 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8348 mAssociated = false; 8349 } 8350 @Override 8351 public boolean processMessage(Message message) { 8352 logStateAndMessage(message, getClass().getSimpleName()); 8353 WifiConfiguration config; 8354 switch (message.what) { 8355 case CMD_IP_CONFIGURATION_LOST: 8356 config = getCurrentWifiConfiguration(); 8357 if (config != null) { 8358 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8359 mWifiConfigStore.noteRoamingFailure(config, 8360 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8361 } 8362 return NOT_HANDLED; 8363 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8364 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8365 return HANDLED; 8366 case CMD_UNWANTED_NETWORK: 8367 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8368 return HANDLED; 8369 case CMD_SET_OPERATIONAL_MODE: 8370 if (message.arg1 != CONNECT_MODE) { 8371 deferMessage(message); 8372 } 8373 break; 8374 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8375 /** 8376 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8377 * before NETWORK_DISCONNECTION_EVENT 8378 * And there is an associated BSSID corresponding to our target BSSID, then 8379 * we have missed the network disconnection, transition to mDisconnectedState 8380 * and handle the rest of the events there. 8381 */ 8382 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8383 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8384 || stateChangeResult.state == SupplicantState.INACTIVE 8385 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8386 if (DBG) { 8387 log("STATE_CHANGE_EVENT in roaming state " 8388 + stateChangeResult.toString() ); 8389 } 8390 if (stateChangeResult.BSSID != null 8391 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8392 handleNetworkDisconnect(); 8393 transitionTo(mDisconnectedState); 8394 } 8395 } 8396 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8397 // We completed the layer2 roaming part 8398 mAssociated = true; 8399 if (stateChangeResult.BSSID != null) { 8400 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8401 } 8402 } 8403 break; 8404 case CMD_ROAM_WATCHDOG_TIMER: 8405 if (roamWatchdogCount == message.arg1) { 8406 if (DBG) log("roaming watchdog! -> disconnect"); 8407 mRoamFailCount++; 8408 handleNetworkDisconnect(); 8409 mWifiNative.disconnect(); 8410 transitionTo(mDisconnectedState); 8411 } 8412 break; 8413 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8414 if (mAssociated) { 8415 if (DBG) log("roaming and Network connection established"); 8416 mLastNetworkId = message.arg1; 8417 mLastBssid = (String) message.obj; 8418 mWifiInfo.setBSSID(mLastBssid); 8419 mWifiInfo.setNetworkId(mLastNetworkId); 8420 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8421 sendNetworkStateChangeBroadcast(mLastBssid); 8422 transitionTo(mObtainingIpState); 8423 } else { 8424 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8425 } 8426 break; 8427 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8428 // Throw away but only if it corresponds to the network we're roaming to 8429 String bssid = (String)message.obj; 8430 if (true) { 8431 String target = ""; 8432 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8433 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8434 + " BSSID=" + bssid 8435 + " target=" + target); 8436 } 8437 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8438 handleNetworkDisconnect(); 8439 transitionTo(mDisconnectedState); 8440 } 8441 break; 8442 case WifiMonitor.SSID_TEMP_DISABLED: 8443 // Auth error while roaming 8444 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8445 + " id=" + Integer.toString(message.arg1) 8446 + " isRoaming=" + isRoaming() 8447 + " roam=" + Integer.toString(mAutoRoaming)); 8448 if (message.arg1 == mLastNetworkId) { 8449 config = getCurrentWifiConfiguration(); 8450 if (config != null) { 8451 mWifiLogger.captureBugReportData( 8452 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8453 mWifiConfigStore.noteRoamingFailure(config, 8454 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8455 } 8456 handleNetworkDisconnect(); 8457 transitionTo(mDisconnectingState); 8458 } 8459 return NOT_HANDLED; 8460 case CMD_START_SCAN: 8461 deferMessage(message); 8462 break; 8463 default: 8464 return NOT_HANDLED; 8465 } 8466 return HANDLED; 8467 } 8468 8469 @Override 8470 public void exit() { 8471 loge("WifiStateMachine: Leaving Roaming state"); 8472 } 8473 } 8474 8475 class ConnectedState extends State { 8476 @Override 8477 public void enter() { 8478 String address; 8479 updateDefaultRouteMacAddress(1000); 8480 if (DBG) { 8481 log("Enter ConnectedState " 8482 + " mScreenOn=" + mScreenOn 8483 + " scanperiod=" 8484 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8485 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8486 + mWifiConfigStore.enableHalBasedPno.get() 8487 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8488 } 8489 if (mScreenOn 8490 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8491 if (useHalBasedAutoJoinOffload()) { 8492 startGScanConnectedModeOffload("connectedEnter"); 8493 } else { 8494 // restart scan alarm 8495 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8496 null, null); 8497 } 8498 } 8499 registerConnected(); 8500 lastConnectAttempt = 0; 8501 targetWificonfiguration = null; 8502 // Paranoia 8503 linkDebouncing = false; 8504 8505 // Not roaming anymore 8506 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8507 8508 if (testNetworkDisconnect) { 8509 testNetworkDisconnectCounter++; 8510 loge("ConnectedState Enter start disconnect test " + 8511 testNetworkDisconnectCounter); 8512 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8513 testNetworkDisconnectCounter, 0), 15000); 8514 } 8515 8516 // Reenable all networks, allow for hidden networks to be scanned 8517 mWifiConfigStore.enableAllNetworks(); 8518 8519 mLastDriverRoamAttempt = 0; 8520 8521 //startLazyRoam(); 8522 } 8523 @Override 8524 public boolean processMessage(Message message) { 8525 WifiConfiguration config = null; 8526 logStateAndMessage(message, getClass().getSimpleName()); 8527 8528 switch (message.what) { 8529 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8530 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8531 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8532 return HANDLED; 8533 } 8534 /* If we are still in Disconnected state after having discovered a valid 8535 * network this means autojoin didnt managed to associate to the network, 8536 * then restart PNO so as we will try associating to it again. 8537 */ 8538 if (useHalBasedAutoJoinOffload()) { 8539 if (mGScanStartTimeMilli == 0) { 8540 // If offload is not started, then start it... 8541 startGScanConnectedModeOffload("connectedRestart"); 8542 } else { 8543 // If offload is already started, then check if we need to increase 8544 // the scan period and restart the Gscan 8545 long now = System.currentTimeMillis(); 8546 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8547 && ((now - mGScanStartTimeMilli) 8548 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8549 && (mGScanPeriodMilli 8550 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8551 { 8552 startConnectedGScan("Connected restart gscan"); 8553 } 8554 } 8555 } 8556 break; 8557 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8558 updateAssociatedScanPermission(); 8559 break; 8560 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8561 if (DBG) log("Watchdog reports poor link"); 8562 transitionTo(mVerifyingLinkState); 8563 break; 8564 case CMD_UNWANTED_NETWORK: 8565 if (message.arg1 == network_status_unwanted_disconnect) { 8566 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8567 mWifiNative.disconnect(); 8568 transitionTo(mDisconnectingState); 8569 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8570 config = getCurrentWifiConfiguration(); 8571 if (config != null) { 8572 // Disable autojoin 8573 config.numNoInternetAccessReports += 1; 8574 } 8575 } 8576 return HANDLED; 8577 case CMD_NETWORK_STATUS: 8578 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8579 config = getCurrentWifiConfiguration(); 8580 if (config != null) { 8581 // re-enable autojoin 8582 config.numNoInternetAccessReports = 0; 8583 config.validatedInternetAccess = true; 8584 } 8585 } 8586 return HANDLED; 8587 case CMD_ACCEPT_UNVALIDATED: 8588 boolean accept = (message.arg1 != 0); 8589 config = getCurrentWifiConfiguration(); 8590 if (config != null) { 8591 config.noInternetAccessExpected = accept; 8592 } 8593 return HANDLED; 8594 case CMD_TEST_NETWORK_DISCONNECT: 8595 // Force a disconnect 8596 if (message.arg1 == testNetworkDisconnectCounter) { 8597 mWifiNative.disconnect(); 8598 } 8599 break; 8600 case CMD_ASSOCIATED_BSSID: 8601 // ASSOCIATING to a new BSSID while already connected, indicates 8602 // that driver is roaming 8603 mLastDriverRoamAttempt = System.currentTimeMillis(); 8604 String toBSSID = (String)message.obj; 8605 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8606 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8607 } 8608 return NOT_HANDLED; 8609 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8610 long lastRoam = 0; 8611 if (mLastDriverRoamAttempt != 0) { 8612 // Calculate time since last driver roam attempt 8613 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8614 mLastDriverRoamAttempt = 0; 8615 } 8616 if (unexpectedDisconnectedReason(message.arg2)) { 8617 mWifiLogger.captureBugReportData( 8618 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8619 } 8620 config = getCurrentWifiConfiguration(); 8621 if (mScreenOn 8622 && !linkDebouncing 8623 && config != null 8624 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8625 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8626 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8627 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8628 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8629 && mWifiInfo.getRssi() > 8630 WifiConfiguration.BAD_RSSI_24) 8631 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8632 && mWifiInfo.getRssi() > 8633 WifiConfiguration.BAD_RSSI_5))) { 8634 // Start de-bouncing the L2 disconnection: 8635 // this L2 disconnection might be spurious. 8636 // Hence we allow 7 seconds for the state machine to try 8637 // to reconnect, go thru the 8638 // roaming cycle and enter Obtaining IP address 8639 // before signalling the disconnect to ConnectivityService and L3 8640 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8641 linkDebouncing = true; 8642 8643 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8644 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8645 if (DBG) { 8646 log("NETWORK_DISCONNECTION_EVENT in connected state" 8647 + " BSSID=" + mWifiInfo.getBSSID() 8648 + " RSSI=" + mWifiInfo.getRssi() 8649 + " freq=" + mWifiInfo.getFrequency() 8650 + " reason=" + message.arg2 8651 + " -> debounce"); 8652 } 8653 return HANDLED; 8654 } else { 8655 if (DBG) { 8656 int ajst = -1; 8657 if (config != null) ajst = config.autoJoinStatus; 8658 log("NETWORK_DISCONNECTION_EVENT in connected state" 8659 + " BSSID=" + mWifiInfo.getBSSID() 8660 + " RSSI=" + mWifiInfo.getRssi() 8661 + " freq=" + mWifiInfo.getFrequency() 8662 + " was debouncing=" + linkDebouncing 8663 + " reason=" + message.arg2 8664 + " ajst=" + ajst); 8665 } 8666 } 8667 break; 8668 case CMD_AUTO_ROAM: 8669 // Clear the driver roam indication since we are attempting a framework roam 8670 mLastDriverRoamAttempt = 0; 8671 8672 /* Connect command coming from auto-join */ 8673 ScanResult candidate = (ScanResult)message.obj; 8674 String bssid = "any"; 8675 if (candidate != null && candidate.is5GHz()) { 8676 // Only lock BSSID for 5GHz networks 8677 bssid = candidate.BSSID; 8678 } 8679 int netId = mLastNetworkId; 8680 config = getCurrentWifiConfiguration(); 8681 8682 8683 if (config == null) { 8684 loge("AUTO_ROAM and no config, bail out..."); 8685 break; 8686 } 8687 8688 loge("CMD_AUTO_ROAM sup state " 8689 + mSupplicantStateTracker.getSupplicantStateName() 8690 + " my state " + getCurrentState().getName() 8691 + " nid=" + Integer.toString(netId) 8692 + " config " + config.configKey() 8693 + " roam=" + Integer.toString(message.arg2) 8694 + " to " + bssid 8695 + " targetRoamBSSID " + mTargetRoamBSSID); 8696 8697 /* Save the BSSID so as to lock it @ firmware */ 8698 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8699 loge("AUTO_ROAM nothing to do"); 8700 // Same BSSID, nothing to do 8701 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8702 break; 8703 }; 8704 8705 // Make sure the network is enabled, since supplicant will not re-enable it 8706 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8707 8708 if (deferForUserInput(message, netId, false)) { 8709 break; 8710 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8711 WifiConfiguration.USER_BANNED) { 8712 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8713 WifiManager.NOT_AUTHORIZED); 8714 break; 8715 } 8716 8717 boolean ret = false; 8718 if (mLastNetworkId != netId) { 8719 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8720 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8721 ret = true; 8722 } 8723 } else { 8724 ret = mWifiNative.reassociate(); 8725 } 8726 if (ret) { 8727 lastConnectAttempt = System.currentTimeMillis(); 8728 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8729 8730 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8731 mAutoRoaming = message.arg2; 8732 transitionTo(mRoamingState); 8733 8734 } else { 8735 loge("Failed to connect config: " + config + " netId: " + netId); 8736 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8737 WifiManager.ERROR); 8738 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8739 break; 8740 } 8741 break; 8742 default: 8743 return NOT_HANDLED; 8744 } 8745 return HANDLED; 8746 } 8747 8748 @Override 8749 public void exit() { 8750 loge("WifiStateMachine: Leaving Connected state"); 8751 setScanAlarm(false); 8752 mLastDriverRoamAttempt = 0; 8753 8754 stopLazyRoam(); 8755 8756 mWhiteListedSsids = null; 8757 } 8758 } 8759 8760 class DisconnectingState extends State { 8761 8762 @Override 8763 public void enter() { 8764 8765 if (PDBG) { 8766 loge(" Enter DisconnectingState State scan interval " 8767 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8768 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8769 + " screenOn=" + mScreenOn); 8770 } 8771 8772 // Make sure we disconnect: we enter this state prior to connecting to a new 8773 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 8774 // event which in this case will be indicating that supplicant started to associate. 8775 // In some cases supplicant doesn't ignore the connect requests (it might not 8776 // find the target SSID in its cache), 8777 // Therefore we end up stuck that state, hence the need for the watchdog. 8778 disconnectingWatchdogCount++; 8779 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8780 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8781 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8782 } 8783 8784 @Override 8785 public boolean processMessage(Message message) { 8786 logStateAndMessage(message, getClass().getSimpleName()); 8787 switch (message.what) { 8788 case CMD_SET_OPERATIONAL_MODE: 8789 if (message.arg1 != CONNECT_MODE) { 8790 deferMessage(message); 8791 } 8792 break; 8793 case CMD_START_SCAN: 8794 deferMessage(message); 8795 return HANDLED; 8796 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8797 if (disconnectingWatchdogCount == message.arg1) { 8798 if (DBG) log("disconnecting watchdog! -> disconnect"); 8799 handleNetworkDisconnect(); 8800 transitionTo(mDisconnectedState); 8801 } 8802 break; 8803 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8804 /** 8805 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8806 * we have missed the network disconnection, transition to mDisconnectedState 8807 * and handle the rest of the events there 8808 */ 8809 deferMessage(message); 8810 handleNetworkDisconnect(); 8811 transitionTo(mDisconnectedState); 8812 break; 8813 default: 8814 return NOT_HANDLED; 8815 } 8816 return HANDLED; 8817 } 8818 } 8819 8820 class DisconnectedState extends State { 8821 @Override 8822 public void enter() { 8823 // We dont scan frequently if this is a temporary disconnect 8824 // due to p2p 8825 if (mTemporarilyDisconnectWifi) { 8826 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8827 return; 8828 } 8829 8830 if (PDBG) { 8831 loge(" Enter DisconnectedState scan interval " 8832 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8833 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8834 + " screenOn=" + mScreenOn 8835 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8836 + mWifiConfigStore.enableHalBasedPno.get()); 8837 } 8838 8839 /** clear the roaming state, if we were roaming, we failed */ 8840 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8841 8842 if (useHalBasedAutoJoinOffload()) { 8843 startGScanDisconnectedModeOffload("disconnectedEnter"); 8844 } else { 8845 if (mScreenOn) { 8846 /** 8847 * screen lit and => delayed timer 8848 */ 8849 startDelayedScan(mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8850 null, null); 8851 } else { 8852 /** 8853 * screen dark and PNO supported => scan alarm disabled 8854 */ 8855 if (mBackgroundScanSupported) { 8856 /* If a regular scan result is pending, do not initiate background 8857 * scan until the scan results are returned. This is needed because 8858 * initiating a background scan will cancel the regular scan and 8859 * scan results will not be returned until background scanning is 8860 * cleared 8861 */ 8862 if (!mIsScanOngoing) { 8863 enableBackgroundScan(true); 8864 } 8865 } else { 8866 setScanAlarm(true); 8867 } 8868 } 8869 } 8870 8871 /** 8872 * If we have no networks saved, the supplicant stops doing the periodic scan. 8873 * The scans are useful to notify the user of the presence of an open network. 8874 * Note that these are not wake up scans. 8875 */ 8876 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 8877 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8878 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8879 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8880 } 8881 8882 mDisconnectedTimeStamp = System.currentTimeMillis(); 8883 8884 } 8885 @Override 8886 public boolean processMessage(Message message) { 8887 boolean ret = HANDLED; 8888 8889 logStateAndMessage(message, getClass().getSimpleName()); 8890 8891 switch (message.what) { 8892 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8893 if (mP2pConnected.get()) break; 8894 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 8895 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8896 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8897 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8898 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8899 } 8900 break; 8901 case WifiManager.FORGET_NETWORK: 8902 case CMD_REMOVE_NETWORK: 8903 case CMD_REMOVE_APP_CONFIGURATIONS: 8904 case CMD_REMOVE_USER_CONFIGURATIONS: 8905 // Set up a delayed message here. After the forget/remove is handled 8906 // the handled delayed message will determine if there is a need to 8907 // scan and continue 8908 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8909 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8910 ret = NOT_HANDLED; 8911 break; 8912 case CMD_SET_OPERATIONAL_MODE: 8913 if (message.arg1 != CONNECT_MODE) { 8914 mOperationalMode = message.arg1; 8915 8916 mWifiConfigStore.disableAllNetworks(); 8917 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8918 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8919 setWifiState(WIFI_STATE_DISABLED); 8920 } 8921 transitionTo(mScanModeState); 8922 } 8923 mWifiConfigStore. 8924 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8925 break; 8926 /* Ignore network disconnect */ 8927 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8928 break; 8929 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8930 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8931 if (DBG) { 8932 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8933 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8934 + " debouncing=" + linkDebouncing); 8935 } 8936 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8937 /* ConnectModeState does the rest of the handling */ 8938 ret = NOT_HANDLED; 8939 break; 8940 case CMD_START_SCAN: 8941 if (!checkOrDeferScanAllowed(message)) { 8942 // The scan request was rescheduled 8943 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8944 return HANDLED; 8945 } 8946 if (message.arg1 == SCAN_ALARM_SOURCE) { 8947 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8948 // not be processed) and restart the scan 8949 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 8950 if (mP2pConnected.get()) { 8951 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8952 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8953 period); 8954 } 8955 if (!checkAndRestartDelayedScan(message.arg2, 8956 true, period, null, null)) { 8957 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8958 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8959 + message.arg1 8960 + " " + message.arg2 + ", " + mDelayedScanCounter 8961 + " -> obsolete"); 8962 return HANDLED; 8963 } 8964 /* Disable background scan temporarily during a regular scan */ 8965 if (mLegacyPnoEnabled) { 8966 enableBackgroundScan(false); 8967 } 8968 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8969 ret = HANDLED; 8970 } else { 8971 8972 /* 8973 * The SCAN request is not handled in this state and 8974 * would eventually might/will get handled in the 8975 * parent's state. The PNO, if already enabled had to 8976 * get disabled before the SCAN trigger. Hence, stop 8977 * the PNO if already enabled in this state, though the 8978 * SCAN request is not handled(PNO disable before the 8979 * SCAN trigger in any other state is not the right 8980 * place to issue). 8981 */ 8982 8983 if (mLegacyPnoEnabled) { 8984 enableBackgroundScan(false); 8985 } 8986 ret = NOT_HANDLED; 8987 } 8988 break; 8989 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8990 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8991 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8992 return HANDLED; 8993 } 8994 /* If we are still in Disconnected state after having discovered a valid 8995 * network this means autojoin didnt managed to associate to the network, 8996 * then restart PNO so as we will try associating to it again. 8997 */ 8998 if (useHalBasedAutoJoinOffload()) { 8999 if (mGScanStartTimeMilli == 0) { 9000 // If offload is not started, then start it... 9001 startGScanDisconnectedModeOffload("disconnectedRestart"); 9002 } else { 9003 // If offload is already started, then check if we need to increase 9004 // the scan period and restart the Gscan 9005 long now = System.currentTimeMillis(); 9006 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9007 && ((now - mGScanStartTimeMilli) 9008 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9009 && (mGScanPeriodMilli 9010 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9011 { 9012 startDisconnectedGScan("disconnected restart gscan"); 9013 } 9014 } 9015 } 9016 break; 9017 case WifiMonitor.SCAN_RESULTS_EVENT: 9018 case WifiMonitor.SCAN_FAILED_EVENT: 9019 /* Re-enable background scan when a pending scan result is received */ 9020 if (!mScreenOn && mIsScanOngoing 9021 && mBackgroundScanSupported 9022 && !useHalBasedAutoJoinOffload()) { 9023 enableBackgroundScan(true); 9024 } 9025 /* Handled in parent state */ 9026 ret = NOT_HANDLED; 9027 break; 9028 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9029 NetworkInfo info = (NetworkInfo) message.obj; 9030 mP2pConnected.set(info.isConnected()); 9031 if (mP2pConnected.get()) { 9032 int defaultInterval = mContext.getResources().getInteger( 9033 R.integer.config_wifi_scan_interval_p2p_connected); 9034 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9035 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9036 defaultInterval); 9037 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9038 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9039 if (DBG) log("Turn on scanning after p2p disconnected"); 9040 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9041 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9042 } else { 9043 // If P2P is not connected and there are saved networks, then restart 9044 // scanning at the normal period. This is necessary because scanning might 9045 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9046 // was set to zero. 9047 if (useHalBasedAutoJoinOffload()) { 9048 startGScanDisconnectedModeOffload("p2pRestart"); 9049 } else { 9050 startDelayedScan( 9051 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9052 null, null); 9053 } 9054 } 9055 break; 9056 case CMD_RECONNECT: 9057 case CMD_REASSOCIATE: 9058 if (mTemporarilyDisconnectWifi) { 9059 // Drop a third party reconnect/reassociate if STA is 9060 // temporarily disconnected for p2p 9061 break; 9062 } else { 9063 // ConnectModeState handles it 9064 ret = NOT_HANDLED; 9065 } 9066 break; 9067 case CMD_SCREEN_STATE_CHANGED: 9068 handleScreenStateChanged(message.arg1 != 0); 9069 break; 9070 default: 9071 ret = NOT_HANDLED; 9072 } 9073 return ret; 9074 } 9075 9076 @Override 9077 public void exit() { 9078 /* No need for a background scan upon exit from a disconnected state */ 9079 if (mLegacyPnoEnabled) { 9080 enableBackgroundScan(false); 9081 } 9082 setScanAlarm(false); 9083 } 9084 } 9085 9086 class WpsRunningState extends State { 9087 // Tracks the source to provide a reply 9088 private Message mSourceMessage; 9089 @Override 9090 public void enter() { 9091 mSourceMessage = Message.obtain(getCurrentMessage()); 9092 } 9093 @Override 9094 public boolean processMessage(Message message) { 9095 logStateAndMessage(message, getClass().getSimpleName()); 9096 9097 switch (message.what) { 9098 case WifiMonitor.WPS_SUCCESS_EVENT: 9099 // Ignore intermediate success, wait for full connection 9100 break; 9101 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9102 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9103 mSourceMessage.recycle(); 9104 mSourceMessage = null; 9105 deferMessage(message); 9106 transitionTo(mDisconnectedState); 9107 break; 9108 case WifiMonitor.WPS_OVERLAP_EVENT: 9109 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9110 WifiManager.WPS_OVERLAP_ERROR); 9111 mSourceMessage.recycle(); 9112 mSourceMessage = null; 9113 transitionTo(mDisconnectedState); 9114 break; 9115 case WifiMonitor.WPS_FAIL_EVENT: 9116 // Arg1 has the reason for the failure 9117 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9118 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9119 mSourceMessage.recycle(); 9120 mSourceMessage = null; 9121 transitionTo(mDisconnectedState); 9122 } else { 9123 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9124 } 9125 break; 9126 case WifiMonitor.WPS_TIMEOUT_EVENT: 9127 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9128 WifiManager.WPS_TIMED_OUT); 9129 mSourceMessage.recycle(); 9130 mSourceMessage = null; 9131 transitionTo(mDisconnectedState); 9132 break; 9133 case WifiManager.START_WPS: 9134 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9135 break; 9136 case WifiManager.CANCEL_WPS: 9137 if (mWifiNative.cancelWps()) { 9138 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9139 } else { 9140 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9141 } 9142 transitionTo(mDisconnectedState); 9143 break; 9144 /** 9145 * Defer all commands that can cause connections to a different network 9146 * or put the state machine out of connect mode 9147 */ 9148 case CMD_STOP_DRIVER: 9149 case CMD_SET_OPERATIONAL_MODE: 9150 case WifiManager.CONNECT_NETWORK: 9151 case CMD_ENABLE_NETWORK: 9152 case CMD_RECONNECT: 9153 case CMD_REASSOCIATE: 9154 case CMD_ENABLE_ALL_NETWORKS: 9155 deferMessage(message); 9156 break; 9157 case CMD_AUTO_CONNECT: 9158 case CMD_AUTO_ROAM: 9159 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9160 return HANDLED; 9161 case CMD_START_SCAN: 9162 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9163 return HANDLED; 9164 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9165 if (DBG) log("Network connection lost"); 9166 handleNetworkDisconnect(); 9167 break; 9168 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9169 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9170 break; 9171 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9172 // Disregard auth failure events during WPS connection. The 9173 // EAP sequence is retried several times, and there might be 9174 // failures (especially for wps pin). We will get a WPS_XXX 9175 // event at the end of the sequence anyway. 9176 if (DBG) log("Ignore auth failure during WPS connection"); 9177 break; 9178 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9179 // Throw away supplicant state changes when WPS is running. 9180 // We will start getting supplicant state changes once we get 9181 // a WPS success or failure 9182 break; 9183 default: 9184 return NOT_HANDLED; 9185 } 9186 return HANDLED; 9187 } 9188 9189 @Override 9190 public void exit() { 9191 mWifiConfigStore.enableAllNetworks(); 9192 mWifiConfigStore.loadConfiguredNetworks(); 9193 } 9194 } 9195 9196 class SoftApStartingState extends State { 9197 @Override 9198 public void enter() { 9199 final Message message = getCurrentMessage(); 9200 if (message.what == CMD_START_AP) { 9201 final WifiConfiguration config = (WifiConfiguration) message.obj; 9202 9203 if (config == null) { 9204 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9205 } else { 9206 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9207 startSoftApWithConfig(config); 9208 } 9209 } else { 9210 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9211 } 9212 } 9213 @Override 9214 public boolean processMessage(Message message) { 9215 logStateAndMessage(message, getClass().getSimpleName()); 9216 9217 switch(message.what) { 9218 case CMD_START_SUPPLICANT: 9219 case CMD_STOP_SUPPLICANT: 9220 case CMD_START_AP: 9221 case CMD_STOP_AP: 9222 case CMD_START_DRIVER: 9223 case CMD_STOP_DRIVER: 9224 case CMD_SET_OPERATIONAL_MODE: 9225 case CMD_SET_COUNTRY_CODE: 9226 case CMD_SET_FREQUENCY_BAND: 9227 case CMD_START_PACKET_FILTERING: 9228 case CMD_STOP_PACKET_FILTERING: 9229 case CMD_TETHER_STATE_CHANGE: 9230 deferMessage(message); 9231 break; 9232 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9233 WifiConfiguration config = (WifiConfiguration) message.obj; 9234 if (config != null) { 9235 startSoftApWithConfig(config); 9236 } else { 9237 loge("Softap config is null!"); 9238 sendMessage(CMD_START_AP_FAILURE); 9239 } 9240 break; 9241 case CMD_START_AP_SUCCESS: 9242 setWifiApState(WIFI_AP_STATE_ENABLED); 9243 transitionTo(mSoftApStartedState); 9244 break; 9245 case CMD_START_AP_FAILURE: 9246 setWifiApState(WIFI_AP_STATE_FAILED); 9247 transitionTo(mInitialState); 9248 break; 9249 default: 9250 return NOT_HANDLED; 9251 } 9252 return HANDLED; 9253 } 9254 } 9255 9256 class SoftApStartedState extends State { 9257 @Override 9258 public boolean processMessage(Message message) { 9259 logStateAndMessage(message, getClass().getSimpleName()); 9260 9261 switch(message.what) { 9262 case CMD_STOP_AP: 9263 if (DBG) log("Stopping Soft AP"); 9264 /* We have not tethered at this point, so we just shutdown soft Ap */ 9265 try { 9266 mNwService.stopAccessPoint(mInterfaceName); 9267 } catch(Exception e) { 9268 loge("Exception in stopAccessPoint()"); 9269 } 9270 setWifiApState(WIFI_AP_STATE_DISABLED); 9271 transitionTo(mInitialState); 9272 break; 9273 case CMD_START_AP: 9274 // Ignore a start on a running access point 9275 break; 9276 // Fail client mode operation when soft AP is enabled 9277 case CMD_START_SUPPLICANT: 9278 loge("Cannot start supplicant with a running soft AP"); 9279 setWifiState(WIFI_STATE_UNKNOWN); 9280 break; 9281 case CMD_TETHER_STATE_CHANGE: 9282 TetherStateChange stateChange = (TetherStateChange) message.obj; 9283 if (startTethering(stateChange.available)) { 9284 transitionTo(mTetheringState); 9285 } 9286 break; 9287 default: 9288 return NOT_HANDLED; 9289 } 9290 return HANDLED; 9291 } 9292 } 9293 9294 class TetheringState extends State { 9295 @Override 9296 public void enter() { 9297 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9298 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9299 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9300 } 9301 @Override 9302 public boolean processMessage(Message message) { 9303 logStateAndMessage(message, getClass().getSimpleName()); 9304 9305 switch(message.what) { 9306 case CMD_TETHER_STATE_CHANGE: 9307 TetherStateChange stateChange = (TetherStateChange) message.obj; 9308 if (isWifiTethered(stateChange.active)) { 9309 transitionTo(mTetheredState); 9310 } 9311 return HANDLED; 9312 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9313 if (message.arg1 == mTetherToken) { 9314 loge("Failed to get tether update, shutdown soft access point"); 9315 transitionTo(mSoftApStartedState); 9316 // Needs to be first thing handled 9317 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9318 } 9319 break; 9320 case CMD_START_SUPPLICANT: 9321 case CMD_STOP_SUPPLICANT: 9322 case CMD_START_AP: 9323 case CMD_STOP_AP: 9324 case CMD_START_DRIVER: 9325 case CMD_STOP_DRIVER: 9326 case CMD_SET_OPERATIONAL_MODE: 9327 case CMD_SET_COUNTRY_CODE: 9328 case CMD_SET_FREQUENCY_BAND: 9329 case CMD_START_PACKET_FILTERING: 9330 case CMD_STOP_PACKET_FILTERING: 9331 deferMessage(message); 9332 break; 9333 default: 9334 return NOT_HANDLED; 9335 } 9336 return HANDLED; 9337 } 9338 } 9339 9340 class TetheredState extends State { 9341 @Override 9342 public boolean processMessage(Message message) { 9343 logStateAndMessage(message, getClass().getSimpleName()); 9344 9345 switch(message.what) { 9346 case CMD_TETHER_STATE_CHANGE: 9347 TetherStateChange stateChange = (TetherStateChange) message.obj; 9348 if (!isWifiTethered(stateChange.active)) { 9349 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9350 setHostApRunning(null, false); 9351 setHostApRunning(null, true); 9352 } 9353 return HANDLED; 9354 case CMD_STOP_AP: 9355 if (DBG) log("Untethering before stopping AP"); 9356 setWifiApState(WIFI_AP_STATE_DISABLING); 9357 stopTethering(); 9358 transitionTo(mUntetheringState); 9359 // More work to do after untethering 9360 deferMessage(message); 9361 break; 9362 default: 9363 return NOT_HANDLED; 9364 } 9365 return HANDLED; 9366 } 9367 } 9368 9369 class UntetheringState extends State { 9370 @Override 9371 public void enter() { 9372 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9373 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9374 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9375 9376 } 9377 @Override 9378 public boolean processMessage(Message message) { 9379 logStateAndMessage(message, getClass().getSimpleName()); 9380 9381 switch(message.what) { 9382 case CMD_TETHER_STATE_CHANGE: 9383 TetherStateChange stateChange = (TetherStateChange) message.obj; 9384 9385 /* Wait till wifi is untethered */ 9386 if (isWifiTethered(stateChange.active)) break; 9387 9388 transitionTo(mSoftApStartedState); 9389 break; 9390 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9391 if (message.arg1 == mTetherToken) { 9392 loge("Failed to get tether update, force stop access point"); 9393 transitionTo(mSoftApStartedState); 9394 } 9395 break; 9396 case CMD_START_SUPPLICANT: 9397 case CMD_STOP_SUPPLICANT: 9398 case CMD_START_AP: 9399 case CMD_STOP_AP: 9400 case CMD_START_DRIVER: 9401 case CMD_STOP_DRIVER: 9402 case CMD_SET_OPERATIONAL_MODE: 9403 case CMD_SET_COUNTRY_CODE: 9404 case CMD_SET_FREQUENCY_BAND: 9405 case CMD_START_PACKET_FILTERING: 9406 case CMD_STOP_PACKET_FILTERING: 9407 deferMessage(message); 9408 break; 9409 default: 9410 return NOT_HANDLED; 9411 } 9412 return HANDLED; 9413 } 9414 } 9415 9416 /** 9417 * State machine initiated requests can have replyTo set to null indicating 9418 * there are no recepients, we ignore those reply actions. 9419 */ 9420 private void replyToMessage(Message msg, int what) { 9421 if (msg.replyTo == null) return; 9422 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9423 mReplyChannel.replyToMessage(msg, dstMsg); 9424 } 9425 9426 private void replyToMessage(Message msg, int what, int arg1) { 9427 if (msg.replyTo == null) return; 9428 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9429 dstMsg.arg1 = arg1; 9430 mReplyChannel.replyToMessage(msg, dstMsg); 9431 } 9432 9433 private void replyToMessage(Message msg, int what, Object obj) { 9434 if (msg.replyTo == null) return; 9435 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9436 dstMsg.obj = obj; 9437 mReplyChannel.replyToMessage(msg, dstMsg); 9438 } 9439 9440 /** 9441 * arg2 on the source message has a unique id that needs to be retained in replies 9442 * to match the request 9443 * <p>see WifiManager for details 9444 */ 9445 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9446 Message msg = Message.obtain(); 9447 msg.what = what; 9448 msg.arg2 = srcMsg.arg2; 9449 return msg; 9450 } 9451 9452 /** 9453 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9454 * @param msg Must have a WifiConfiguration obj to succeed 9455 */ 9456 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9457 WifiConfiguration config) { 9458 if (config != null && config.preSharedKey != null) { 9459 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9460 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9461 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9462 wifiCredentialEventType); 9463 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9464 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9465 } 9466 } 9467 9468 private static int parseHex(char ch) { 9469 if ('0' <= ch && ch <= '9') { 9470 return ch - '0'; 9471 } else if ('a' <= ch && ch <= 'f') { 9472 return ch - 'a' + 10; 9473 } else if ('A' <= ch && ch <= 'F') { 9474 return ch - 'A' + 10; 9475 } else { 9476 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9477 } 9478 } 9479 9480 private byte[] parseHex(String hex) { 9481 /* This only works for good input; don't throw bad data at it */ 9482 if (hex == null) { 9483 return new byte[0]; 9484 } 9485 9486 if (hex.length() % 2 != 0) { 9487 throw new NumberFormatException(hex + " is not a valid hex string"); 9488 } 9489 9490 byte[] result = new byte[(hex.length())/2 + 1]; 9491 result[0] = (byte) ((hex.length())/2); 9492 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9493 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9494 byte b = (byte) (val & 0xFF); 9495 result[j] = b; 9496 } 9497 9498 return result; 9499 } 9500 9501 private static String makeHex(byte[] bytes) { 9502 StringBuilder sb = new StringBuilder(); 9503 for (byte b : bytes) { 9504 sb.append(String.format("%02x", b)); 9505 } 9506 return sb.toString(); 9507 } 9508 9509 private static String makeHex(byte[] bytes, int from, int len) { 9510 StringBuilder sb = new StringBuilder(); 9511 for (int i = 0; i < len; i++) { 9512 sb.append(String.format("%02x", bytes[from+i])); 9513 } 9514 return sb.toString(); 9515 } 9516 9517 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9518 9519 int len = array1.length + array2.length + array3.length; 9520 9521 if (array1.length != 0) { 9522 len++; /* add another byte for size */ 9523 } 9524 9525 if (array2.length != 0) { 9526 len++; /* add another byte for size */ 9527 } 9528 9529 if (array3.length != 0) { 9530 len++; /* add another byte for size */ 9531 } 9532 9533 byte[] result = new byte[len]; 9534 9535 int index = 0; 9536 if (array1.length != 0) { 9537 result[index] = (byte) (array1.length & 0xFF); 9538 index++; 9539 for (byte b : array1) { 9540 result[index] = b; 9541 index++; 9542 } 9543 } 9544 9545 if (array2.length != 0) { 9546 result[index] = (byte) (array2.length & 0xFF); 9547 index++; 9548 for (byte b : array2) { 9549 result[index] = b; 9550 index++; 9551 } 9552 } 9553 9554 if (array3.length != 0) { 9555 result[index] = (byte) (array3.length & 0xFF); 9556 index++; 9557 for (byte b : array3) { 9558 result[index] = b; 9559 index++; 9560 } 9561 } 9562 return result; 9563 } 9564 9565 private static byte[] concatHex(byte[] array1, byte[] array2) { 9566 9567 int len = array1.length + array2.length; 9568 9569 byte[] result = new byte[len]; 9570 9571 int index = 0; 9572 if (array1.length != 0) { 9573 for (byte b : array1) { 9574 result[index] = b; 9575 index++; 9576 } 9577 } 9578 9579 if (array2.length != 0) { 9580 for (byte b : array2) { 9581 result[index] = b; 9582 index++; 9583 } 9584 } 9585 9586 return result; 9587 } 9588 9589 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9590 if (targetWificonfiguration == null 9591 || targetWificonfiguration.networkId == requestData.networkId) { 9592 logd("id matches targetWifiConfiguration"); 9593 } else { 9594 logd("id does not match targetWifiConfiguration"); 9595 return; 9596 } 9597 9598 TelephonyManager tm = (TelephonyManager) 9599 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9600 9601 if (tm != null) { 9602 StringBuilder sb = new StringBuilder(); 9603 for (String challenge : requestData.data) { 9604 9605 if (challenge == null || challenge.isEmpty()) 9606 continue; 9607 logd("RAND = " + challenge); 9608 9609 byte[] rand = null; 9610 try { 9611 rand = parseHex(challenge); 9612 } catch (NumberFormatException e) { 9613 loge("malformed challenge"); 9614 continue; 9615 } 9616 9617 String base64Challenge = android.util.Base64.encodeToString( 9618 rand, android.util.Base64.NO_WRAP); 9619 /* 9620 * First, try with appType = 2 => USIM according to 9621 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9622 */ 9623 int appType = 2; 9624 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9625 if (tmResponse == null) { 9626 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9627 * appType = 1 => SIM 9628 */ 9629 appType = 1; 9630 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9631 } 9632 logv("Raw Response - " + tmResponse); 9633 9634 if (tmResponse != null && tmResponse.length() > 4) { 9635 byte[] result = android.util.Base64.decode(tmResponse, 9636 android.util.Base64.DEFAULT); 9637 logv("Hex Response -" + makeHex(result)); 9638 int sres_len = result[0]; 9639 String sres = makeHex(result, 1, sres_len); 9640 int kc_offset = 1+sres_len; 9641 int kc_len = result[kc_offset]; 9642 String kc = makeHex(result, 1+kc_offset, kc_len); 9643 sb.append(":" + kc + ":" + sres); 9644 logv("kc:" + kc + " sres:" + sres); 9645 } else { 9646 loge("bad response - " + tmResponse); 9647 } 9648 } 9649 9650 String response = sb.toString(); 9651 logv("Supplicant Response -" + response); 9652 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9653 } else { 9654 loge("could not get telephony manager"); 9655 } 9656 } 9657 9658 void handle3GAuthRequest(SimAuthRequestData requestData) { 9659 StringBuilder sb = new StringBuilder(); 9660 byte[] rand = null; 9661 byte[] authn = null; 9662 String res_type = "UMTS-AUTH"; 9663 9664 if (targetWificonfiguration == null 9665 || targetWificonfiguration.networkId == requestData.networkId) { 9666 logd("id matches targetWifiConfiguration"); 9667 } else { 9668 logd("id does not match targetWifiConfiguration"); 9669 return; 9670 } 9671 if (requestData.data.length == 2) { 9672 try { 9673 rand = parseHex(requestData.data[0]); 9674 authn = parseHex(requestData.data[1]); 9675 } catch (NumberFormatException e) { 9676 loge("malformed challenge"); 9677 } 9678 } else { 9679 loge("malformed challenge"); 9680 } 9681 9682 String tmResponse = ""; 9683 if (rand != null && authn != null) { 9684 String base64Challenge = android.util.Base64.encodeToString( 9685 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9686 9687 TelephonyManager tm = (TelephonyManager) 9688 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9689 if (tm != null) { 9690 int appType = 2; // 2 => USIM 9691 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9692 logv("Raw Response - " + tmResponse); 9693 } else { 9694 loge("could not get telephony manager"); 9695 } 9696 } 9697 9698 if (tmResponse != null && tmResponse.length() > 4) { 9699 byte[] result = android.util.Base64.decode(tmResponse, 9700 android.util.Base64.DEFAULT); 9701 loge("Hex Response - " + makeHex(result)); 9702 byte tag = result[0]; 9703 if (tag == (byte) 0xdb) { 9704 logv("successful 3G authentication "); 9705 int res_len = result[1]; 9706 String res = makeHex(result, 2, res_len); 9707 int ck_len = result[res_len + 2]; 9708 String ck = makeHex(result, res_len + 3, ck_len); 9709 int ik_len = result[res_len + ck_len + 3]; 9710 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9711 sb.append(":" + ik + ":" + ck + ":" + res); 9712 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9713 } else if (tag == (byte) 0xdc) { 9714 loge("synchronisation failure"); 9715 int auts_len = result[1]; 9716 String auts = makeHex(result, 2, auts_len); 9717 res_type = "UMTS-AUTS"; 9718 sb.append(":" + auts); 9719 logv("auts:" + auts); 9720 } else { 9721 loge("bad response - unknown tag = " + tag); 9722 return; 9723 } 9724 } else { 9725 loge("bad response - " + tmResponse); 9726 return; 9727 } 9728 9729 String response = sb.toString(); 9730 logv("Supplicant Response -" + response); 9731 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9732 } 9733 9734 /** 9735 * @param reason reason code from supplicant on network disconnected event 9736 * @return true if this is a suspicious disconnect 9737 */ 9738 static boolean unexpectedDisconnectedReason(int reason) { 9739 return reason == 2 // PREV_AUTH_NOT_VALID 9740 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 9741 || reason == 7 // FRAME_FROM_NONASSOC_STA 9742 || reason == 8 // STA_HAS_LEFT 9743 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 9744 || reason == 14 // MICHAEL_MIC_FAILURE 9745 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 9746 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 9747 || reason == 18 // GROUP_CIPHER_NOT_VALID 9748 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 9749 || reason == 23 // IEEE_802_1X_AUTH_FAILED 9750 || reason == 34; // DISASSOC_LOW_ACK 9751 } 9752} 9753