WifiStateMachine.java revision a8647b8cb29de22765062714cb265247234c3d32
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 public void registerNetworkDisabled(int netId) { 274 // Restart legacy PNO and autojoin offload if needed 275 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 276 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 277 mRestartAutoJoinOffloadCounter++; 278 } 279 280 // Testing various network disconnect cases by sending lots of spurious 281 // disconnect to supplicant 282 private boolean testNetworkDisconnect = false; 283 284 private boolean mEnableRssiPolling = false; 285 private boolean mLegacyPnoEnabled = false; 286 private int mRssiPollToken = 0; 287 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 288 * In CONNECT_MODE, the STA can scan and connect to an access point 289 * In SCAN_ONLY_MODE, the STA can only scan for access points 290 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 291 */ 292 private int mOperationalMode = CONNECT_MODE; 293 private boolean mIsScanOngoing = false; 294 private boolean mIsFullScanOngoing = false; 295 private boolean mSendScanResultsBroadcast = false; 296 297 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 298 private WorkSource mScanWorkSource = null; 299 private static final int UNKNOWN_SCAN_SOURCE = -1; 300 private static final int SCAN_ALARM_SOURCE = -2; 301 private static final int ADD_OR_UPDATE_SOURCE = -3; 302 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 303 private static final int ENABLE_WIFI = -5; 304 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 305 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 306 307 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 308 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 309 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 310 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 311 312 /* Tracks if state machine has received any screen state change broadcast yet. 313 * We can miss one of these at boot. 314 */ 315 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 316 317 private boolean mBluetoothConnectionActive = false; 318 319 private PowerManager.WakeLock mSuspendWakeLock; 320 321 /** 322 * Interval in milliseconds between polling for RSSI 323 * and linkspeed information 324 */ 325 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 326 327 /** 328 * Interval in milliseconds between receiving a disconnect event 329 * while connected to a good AP, and handling the disconnect proper 330 */ 331 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 332 333 /** 334 * Delay between supplicant restarts upon failure to establish connection 335 */ 336 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 337 338 /** 339 * Number of times we attempt to restart supplicant 340 */ 341 private static final int SUPPLICANT_RESTART_TRIES = 5; 342 343 private int mSupplicantRestartCount = 0; 344 /* Tracks sequence number on stop failure message */ 345 private int mSupplicantStopFailureToken = 0; 346 347 /** 348 * Tether state change notification time out 349 */ 350 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 351 352 /* Tracks sequence number on a tether notification time out */ 353 private int mTetherToken = 0; 354 355 /** 356 * Driver start time out. 357 */ 358 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 359 360 /* Tracks sequence number on a driver time out */ 361 private int mDriverStartToken = 0; 362 363 /** 364 * The link properties of the wifi interface. 365 * Do not modify this directly; use updateLinkProperties instead. 366 */ 367 private LinkProperties mLinkProperties; 368 369 /* Tracks sequence number on a periodic scan message */ 370 private int mPeriodicScanToken = 0; 371 372 // Wakelock held during wifi start/stop and driver load/unload 373 private PowerManager.WakeLock mWakeLock; 374 375 private Context mContext; 376 377 private final Object mDhcpResultsLock = new Object(); 378 private DhcpResults mDhcpResults; 379 380 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 381 private WifiInfo mWifiInfo; 382 private NetworkInfo mNetworkInfo; 383 private NetworkCapabilities mNetworkCapabilities; 384 private SupplicantStateTracker mSupplicantStateTracker; 385 private BaseDhcpStateMachine mDhcpStateMachine; 386 private boolean mDhcpActive = false; 387 388 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 389 390 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 391 392 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 393 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 394 395 // Roaming failure count 396 private int mRoamFailCount = 0; 397 398 // This is the BSSID we are trying to associate to, it can be set to "any" 399 // if we havent selected a BSSID for joining. 400 // if we havent selected a BSSID for joining. 401 // The BSSID we are associated to is found in mWifiInfo 402 private String mTargetRoamBSSID = "any"; 403 404 private long mLastDriverRoamAttempt = 0; 405 406 private WifiConfiguration targetWificonfiguration = null; 407 408 // Used as debug to indicate which configuration last was saved 409 private WifiConfiguration lastSavedConfigurationAttempt = null; 410 411 // Used as debug to indicate which configuration last was removed 412 private WifiConfiguration lastForgetConfigurationAttempt = null; 413 414 //Random used by softAP channel Selection 415 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 416 417 boolean isRoaming() { 418 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 419 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 420 } 421 422 public void autoRoamSetBSSID(int netId, String bssid) { 423 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 424 } 425 426 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 427 boolean ret = true; 428 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 429 if (bssid == null) bssid = "any"; 430 if (config == null) return false; // Nothing to do 431 432 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 433 return false; // We didnt change anything 434 } 435 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 436 // Changing to ANY 437 if (!mWifiConfigStore.roamOnAny) { 438 ret = false; // Nothing to do 439 } 440 } 441 if (VDBG) { 442 loge("autoRoamSetBSSID " + bssid 443 + " key=" + config.configKey()); 444 } 445 config.autoJoinBSSID = bssid; 446 mTargetRoamBSSID = bssid; 447 mWifiConfigStore.saveWifiConfigBSSID(config); 448 return ret; 449 } 450 451 /** 452 * Save the UID correctly depending on if this is a new or existing network. 453 * @return true if operation is authorized, false otherwise 454 */ 455 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 456 if (!mWifiConfigStore.isNetworkConfigured(config)) { 457 config.creatorUid = uid; 458 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 459 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 460 return false; 461 } 462 463 config.lastUpdateUid = uid; 464 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 465 466 return true; 467 468 } 469 470 /** 471 * Checks to see if user has specified if the apps configuration is connectable. 472 * If the user hasn't specified we query the user and return true. 473 * 474 * @param message The message to be deferred 475 * @param netId Network id of the configuration to check against 476 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 477 * CONFIG_OVERRIDE_PERMISSION 478 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 479 */ 480 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 481 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 482 483 // We can only evaluate saved configurations. 484 if (config == null) { 485 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 486 return true; 487 } 488 489 switch (config.userApproved) { 490 case WifiConfiguration.USER_APPROVED: 491 case WifiConfiguration.USER_BANNED: 492 return false; 493 case WifiConfiguration.USER_PENDING: 494 default: // USER_UNSPECIFIED 495 /* the intention was to ask user here; but a dialog box is * 496 * too invasive; so we are going to allow connection for now */ 497 config.userApproved = WifiConfiguration.USER_APPROVED; 498 return false; 499 } 500 } 501 502 /** 503 * Subset of link properties coming from netlink. 504 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 505 * and domains obtained from router advertisements (RFC 6106). 506 */ 507 private NetlinkTracker mNetlinkTracker; 508 509 private IpReachabilityMonitor mIpReachabilityMonitor; 510 511 private AlarmManager mAlarmManager; 512 private PendingIntent mScanIntent; 513 private PendingIntent mDriverStopIntent; 514 private PendingIntent mPnoIntent; 515 516 private int mDisconnectedPnoAlarmCount = 0; 517 /* Tracks current frequency mode */ 518 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 519 520 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 521 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 522 523 // Channel for sending replies. 524 private AsyncChannel mReplyChannel = new AsyncChannel(); 525 526 private WifiP2pServiceImpl mWifiP2pServiceImpl; 527 528 // Used to initiate a connection with WifiP2pService 529 private AsyncChannel mWifiP2pChannel; 530 private AsyncChannel mWifiApConfigChannel; 531 532 private WifiScanner mWifiScanner; 533 534 private int mConnectionRequests = 0; 535 private WifiNetworkFactory mNetworkFactory; 536 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 537 private WifiNetworkAgent mNetworkAgent; 538 539 private String[] mWhiteListedSsids = null; 540 541 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 542 // We should really persist that into the networkHistory.txt file, and read it back when 543 // WifiStateMachine starts up 544 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 545 546 // Used to filter out requests we couldn't possibly satisfy. 547 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 548 549 /* The base for wifi message types */ 550 static final int BASE = Protocol.BASE_WIFI; 551 /* Start the supplicant */ 552 static final int CMD_START_SUPPLICANT = BASE + 11; 553 /* Stop the supplicant */ 554 static final int CMD_STOP_SUPPLICANT = BASE + 12; 555 /* Start the driver */ 556 static final int CMD_START_DRIVER = BASE + 13; 557 /* Stop the driver */ 558 static final int CMD_STOP_DRIVER = BASE + 14; 559 /* Indicates Static IP succeeded */ 560 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 561 /* Indicates Static IP failed */ 562 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 563 /* Indicates supplicant stop failed */ 564 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 565 /* Delayed stop to avoid shutting down driver too quick*/ 566 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 567 /* A delayed message sent to start driver when it fail to come up */ 568 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 569 570 /* Start the soft access point */ 571 static final int CMD_START_AP = BASE + 21; 572 /* Indicates soft ap start succeeded */ 573 static final int CMD_START_AP_SUCCESS = BASE + 22; 574 /* Indicates soft ap start failed */ 575 static final int CMD_START_AP_FAILURE = BASE + 23; 576 /* Stop the soft access point */ 577 static final int CMD_STOP_AP = BASE + 24; 578 /* Set the soft access point configuration */ 579 static final int CMD_SET_AP_CONFIG = BASE + 25; 580 /* Soft access point configuration set completed */ 581 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 582 /* Request the soft access point configuration */ 583 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 584 /* Response to access point configuration request */ 585 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 586 /* Invoked when getting a tether state change notification */ 587 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 588 /* A delayed message sent to indicate tether state change failed to arrive */ 589 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 590 591 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 592 593 /* Supplicant commands */ 594 /* Is supplicant alive ? */ 595 static final int CMD_PING_SUPPLICANT = BASE + 51; 596 /* Add/update a network configuration */ 597 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 598 /* Delete a network */ 599 static final int CMD_REMOVE_NETWORK = BASE + 53; 600 /* Enable a network. The device will attempt a connection to the given network. */ 601 static final int CMD_ENABLE_NETWORK = BASE + 54; 602 /* Enable all networks */ 603 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 604 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 605 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 606 /* Clear the blacklist network list */ 607 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 608 /* Save configuration */ 609 static final int CMD_SAVE_CONFIG = BASE + 58; 610 /* Get configured networks */ 611 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 612 /* Get available frequencies */ 613 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 614 /* Get adaptors */ 615 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 616 /* Get configured networks with real preSharedKey */ 617 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 618 /* Get Link Layer Stats thru HAL */ 619 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 620 /* Supplicant commands after driver start*/ 621 /* Initiate a scan */ 622 static final int CMD_START_SCAN = BASE + 71; 623 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 624 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 625 /* Disconnect from a network */ 626 static final int CMD_DISCONNECT = BASE + 73; 627 /* Reconnect to a network */ 628 static final int CMD_RECONNECT = BASE + 74; 629 /* Reassociate to a network */ 630 static final int CMD_REASSOCIATE = BASE + 75; 631 /* Get Connection Statistis */ 632 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 633 634 /* Controls suspend mode optimizations 635 * 636 * When high perf mode is enabled, suspend mode optimizations are disabled 637 * 638 * When high perf mode is disabled, suspend mode optimizations are enabled 639 * 640 * Suspend mode optimizations include: 641 * - packet filtering 642 * - turn off roaming 643 * - DTIM wake up settings 644 */ 645 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 646 /* Set the country code */ 647 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 648 /* Enables RSSI poll */ 649 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 650 /* RSSI poll */ 651 static final int CMD_RSSI_POLL = BASE + 83; 652 /* Set up packet filtering */ 653 static final int CMD_START_PACKET_FILTERING = BASE + 84; 654 /* Clear packet filter */ 655 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 656 /* Enable suspend mode optimizations in the driver */ 657 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 658 /* Delayed NETWORK_DISCONNECT */ 659 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 660 /* When there are no saved networks, we do a periodic scan to notify user of 661 * an open network */ 662 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 663 /* Test network Disconnection NETWORK_DISCONNECT */ 664 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 665 666 private int testNetworkDisconnectCounter = 0; 667 668 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 669 static final int MULTICAST_V6 = 1; 670 static final int MULTICAST_V4 = 0; 671 672 /* Set the frequency band */ 673 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 674 /* Enable TDLS on a specific MAC address */ 675 static final int CMD_ENABLE_TDLS = BASE + 92; 676 /* DHCP/IP configuration watchdog */ 677 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 678 679 /** 680 * Watchdog for protecting against b/16823537 681 * Leave time for 4-way handshake to succeed 682 */ 683 static final int ROAM_GUARD_TIMER_MSEC = 15000; 684 685 int roamWatchdogCount = 0; 686 /* Roam state watchdog */ 687 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 688 /* Screen change intent handling */ 689 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 690 691 /* Disconnecting state watchdog */ 692 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 693 694 /* Remove a packages associated configrations */ 695 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 696 697 /* Disable an ephemeral network */ 698 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 699 700 /* Get matching network */ 701 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 702 703 /* alert from firmware */ 704 static final int CMD_FIRMWARE_ALERT = BASE + 100; 705 706 /** 707 * Make this timer 40 seconds, which is about the normal DHCP timeout. 708 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 709 * for more than 30 seconds. 710 */ 711 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 712 713 int obtainingIpWatchdogCount = 0; 714 715 /* Commands from/to the SupplicantStateTracker */ 716 /* Reset the supplicant state tracker */ 717 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 718 719 int disconnectingWatchdogCount = 0; 720 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 721 722 /* P2p commands */ 723 /* We are ok with no response here since we wont do much with it anyway */ 724 public static final int CMD_ENABLE_P2P = BASE + 131; 725 /* In order to shut down supplicant cleanly, we wait till p2p has 726 * been disabled */ 727 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 728 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 729 730 public static final int CMD_BOOT_COMPLETED = BASE + 134; 731 732 /* We now have a valid IP configuration. */ 733 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 734 /* We no longer have a valid IP configuration. */ 735 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 736 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 737 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 738 739 /* Supplicant is trying to associate to a given BSSID */ 740 static final int CMD_TARGET_BSSID = BASE + 141; 741 742 /* Reload all networks and reconnect */ 743 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 744 745 static final int CMD_AUTO_CONNECT = BASE + 143; 746 747 static final int network_status_unwanted_disconnect = 0; 748 static final int network_status_unwanted_disable_autojoin = 1; 749 750 static final int CMD_UNWANTED_NETWORK = BASE + 144; 751 752 static final int CMD_AUTO_ROAM = BASE + 145; 753 754 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 755 756 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 757 758 static final int CMD_NETWORK_STATUS = BASE + 148; 759 760 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 761 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 762 763 /* Remove a packages associated configrations */ 764 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 765 766 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 767 768 /* used to restart PNO when it was stopped due to association attempt */ 769 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 770 771 static int mRestartAutoJoinOffloadCounter = 0; 772 773 /* used to log if PNO was started */ 774 static final int CMD_STARTED_PNO_DBG = BASE + 155; 775 776 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 777 778 /* used to log if PNO was started */ 779 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 780 781 /* used to log if GSCAN was started */ 782 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 783 784 785 /* Wifi state machine modes of operation */ 786 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 787 public static final int CONNECT_MODE = 1; 788 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 789 public static final int SCAN_ONLY_MODE = 2; 790 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 791 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 792 793 private static final int SUCCESS = 1; 794 private static final int FAILURE = -1; 795 796 /* Tracks if suspend optimizations need to be disabled by DHCP, 797 * screen or due to high perf mode. 798 * When any of them needs to disable it, we keep the suspend optimizations 799 * disabled 800 */ 801 private int mSuspendOptNeedsDisabled = 0; 802 803 private static final int SUSPEND_DUE_TO_DHCP = 1; 804 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 805 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 806 807 /* Tracks if user has enabled suspend optimizations through settings */ 808 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 809 810 /** 811 * Default framework scan interval in milliseconds. This is used in the scenario in which 812 * wifi chipset does not support background scanning to set up a 813 * periodic wake up scan so that the device can connect to a new access 814 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 815 * override this. 816 */ 817 private final int mDefaultFrameworkScanIntervalMs; 818 819 820 /** 821 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 822 */ 823 private final int mNoNetworksPeriodicScan; 824 825 /** 826 * Supplicant scan interval in milliseconds. 827 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 828 * from the default config if the setting is not set 829 */ 830 private long mSupplicantScanIntervalMs; 831 832 /** 833 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 834 */ 835 private long lastFullBandConnectedTimeMilli; 836 837 /** 838 * time interval to the next full band scan we will perform for 839 * autojoin while connected with screen lit 840 */ 841 private long fullBandConnectedTimeIntervalMilli; 842 843 /** 844 * max time interval to the next full band scan we will perform for 845 * autojoin while connected with screen lit 846 * Max time is 5 minutes 847 */ 848 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 849 850 /** 851 * Minimum time interval between enabling all networks. 852 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 853 * due to enabling every time. We add a threshold to avoid this. 854 */ 855 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 856 private long mLastEnableAllNetworksTime; 857 858 int mRunningBeaconCount = 0; 859 860 /** 861 * Starting and shutting down driver too quick causes problems leading to driver 862 * being in a bad state. Delay driver stop. 863 */ 864 private final int mDriverStopDelayMs; 865 private int mDelayedStopCounter; 866 private boolean mInDelayedStop = false; 867 868 // there is a delay between StateMachine change country code and Supplicant change country code 869 // here save the current WifiStateMachine set country code 870 private volatile String mSetCountryCode = null; 871 872 // Supplicant doesn't like setting the same country code multiple times (it may drop 873 // currently connected network), so we save the current device set country code here to avoid 874 // redundency 875 private String mDriverSetCountryCode = null; 876 877 /* Default parent state */ 878 private State mDefaultState = new DefaultState(); 879 /* Temporary initial state */ 880 private State mInitialState = new InitialState(); 881 /* Driver loaded, waiting for supplicant to start */ 882 private State mSupplicantStartingState = new SupplicantStartingState(); 883 /* Driver loaded and supplicant ready */ 884 private State mSupplicantStartedState = new SupplicantStartedState(); 885 /* Waiting for supplicant to stop and monitor to exit */ 886 private State mSupplicantStoppingState = new SupplicantStoppingState(); 887 /* Driver start issued, waiting for completed event */ 888 private State mDriverStartingState = new DriverStartingState(); 889 /* Driver started */ 890 private State mDriverStartedState = new DriverStartedState(); 891 /* Wait until p2p is disabled 892 * This is a special state which is entered right after we exit out of DriverStartedState 893 * before transitioning to another state. 894 */ 895 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 896 /* Driver stopping */ 897 private State mDriverStoppingState = new DriverStoppingState(); 898 /* Driver stopped */ 899 private State mDriverStoppedState = new DriverStoppedState(); 900 /* Scan for networks, no connection will be established */ 901 private State mScanModeState = new ScanModeState(); 902 /* Connecting to an access point */ 903 private State mConnectModeState = new ConnectModeState(); 904 /* Connected at 802.11 (L2) level */ 905 private State mL2ConnectedState = new L2ConnectedState(); 906 /* fetching IP after connection to access point (assoc+auth complete) */ 907 private State mObtainingIpState = new ObtainingIpState(); 908 /* Waiting for link quality verification to be complete */ 909 private State mVerifyingLinkState = new VerifyingLinkState(); 910 /* Connected with IP addr */ 911 private State mConnectedState = new ConnectedState(); 912 /* Roaming */ 913 private State mRoamingState = new RoamingState(); 914 /* disconnect issued, waiting for network disconnect confirmation */ 915 private State mDisconnectingState = new DisconnectingState(); 916 /* Network is not connected, supplicant assoc+auth is not complete */ 917 private State mDisconnectedState = new DisconnectedState(); 918 /* Waiting for WPS to be completed*/ 919 private State mWpsRunningState = new WpsRunningState(); 920 921 /* Soft ap is starting up */ 922 private State mSoftApStartingState = new SoftApStartingState(); 923 /* Soft ap is running */ 924 private State mSoftApStartedState = new SoftApStartedState(); 925 /* Soft ap is running and we are waiting for tether notification */ 926 private State mTetheringState = new TetheringState(); 927 /* Soft ap is running and we are tethered through connectivity service */ 928 private State mTetheredState = new TetheredState(); 929 /* Waiting for untether confirmation before stopping soft Ap */ 930 private State mUntetheringState = new UntetheringState(); 931 932 933 934 private class WifiScanListener implements WifiScanner.ScanListener { 935 @Override 936 public void onSuccess() { 937 Log.e(TAG, "WifiScanListener onSuccess"); 938 }; 939 @Override 940 public void onFailure(int reason, String description) { 941 Log.e(TAG, "WifiScanListener onFailure"); 942 }; 943 @Override 944 public void onPeriodChanged(int periodInMs) { 945 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 946 } 947 @Override 948 public void onResults(WifiScanner.ScanData[] results) { 949 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 950 } 951 @Override 952 public void onFullResult(ScanResult fullScanResult) { 953 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 954 } 955 956 WifiScanListener() {} 957 } 958 959 WifiScanListener mWifiScanListener = new WifiScanListener(); 960 961 962 private class TetherStateChange { 963 ArrayList<String> available; 964 ArrayList<String> active; 965 966 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 967 available = av; 968 active = ac; 969 } 970 } 971 972 public static class SimAuthRequestData { 973 int networkId; 974 int protocol; 975 String ssid; 976 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 977 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 978 String[] data; 979 } 980 981 /** 982 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 983 * {@link WifiManager#WIFI_STATE_DISABLING}, 984 * {@link WifiManager#WIFI_STATE_ENABLED}, 985 * {@link WifiManager#WIFI_STATE_ENABLING}, 986 * {@link WifiManager#WIFI_STATE_UNKNOWN} 987 */ 988 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 989 990 /** 991 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 992 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 993 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 994 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 995 * {@link WifiManager#WIFI_AP_STATE_FAILED} 996 */ 997 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 998 999 private static final int SCAN_REQUEST = 0; 1000 private static final String ACTION_START_SCAN = 1001 "com.android.server.WifiManager.action.START_SCAN"; 1002 1003 private static final int PNO_START_REQUEST = 0; 1004 private static final String ACTION_START_PNO = 1005 "com.android.server.WifiManager.action.START_PNO"; 1006 1007 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1008 private static final int DRIVER_STOP_REQUEST = 0; 1009 private static final String ACTION_DELAYED_DRIVER_STOP = 1010 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1011 1012 /** 1013 * Keep track of whether WIFI is running. 1014 */ 1015 private boolean mIsRunning = false; 1016 1017 /** 1018 * Keep track of whether we last told the battery stats we had started. 1019 */ 1020 private boolean mReportedRunning = false; 1021 1022 /** 1023 * Most recently set source of starting WIFI. 1024 */ 1025 private final WorkSource mRunningWifiUids = new WorkSource(); 1026 1027 /** 1028 * The last reported UIDs that were responsible for starting WIFI. 1029 */ 1030 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1031 1032 private final IBatteryStats mBatteryStats; 1033 1034 private String mTcpBufferSizes = null; 1035 1036 // Used for debug and stats gathering 1037 private static int sScanAlarmIntentCount = 0; 1038 1039 final static int frameworkMinScanIntervalSaneValue = 10000; 1040 1041 boolean mPnoEnabled; 1042 boolean mLazyRoamEnabled; 1043 long mGScanStartTimeMilli; 1044 long mGScanPeriodMilli; 1045 1046 public WifiStateMachine(Context context, String wlanInterface, 1047 WifiTrafficPoller trafficPoller) { 1048 super("WifiStateMachine"); 1049 mContext = context; 1050 mSetCountryCode = Settings.Global.getString( 1051 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1052 mInterfaceName = wlanInterface; 1053 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1054 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1055 BatteryStats.SERVICE_NAME)); 1056 1057 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1058 mNwService = INetworkManagementService.Stub.asInterface(b); 1059 1060 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1061 PackageManager.FEATURE_WIFI_DIRECT); 1062 1063 mWifiNative = new WifiNative(mInterfaceName); 1064 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1065 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1066 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1067 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1068 mWifiLogger = new WifiLogger(this); 1069 1070 mWifiInfo = new WifiInfo(); 1071 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1072 getHandler()); 1073 mLinkProperties = new LinkProperties(); 1074 1075 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1076 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1077 1078 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1079 1080 mNetworkInfo.setIsAvailable(false); 1081 mLastBssid = null; 1082 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1083 mLastSignalLevel = -1; 1084 1085 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1086 public void update() { 1087 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1088 } 1089 }); 1090 try { 1091 mNwService.registerObserver(mNetlinkTracker); 1092 } catch (RemoteException e) { 1093 loge("Couldn't register netlink tracker: " + e.toString()); 1094 } 1095 1096 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1097 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1098 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1099 1100 // Make sure the interval is not configured less than 10 seconds 1101 int period = mContext.getResources().getInteger( 1102 R.integer.config_wifi_framework_scan_interval); 1103 if (period < frameworkMinScanIntervalSaneValue) { 1104 period = frameworkMinScanIntervalSaneValue; 1105 } 1106 mDefaultFrameworkScanIntervalMs = period; 1107 1108 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1109 R.integer.config_wifi_no_network_periodic_scan_interval); 1110 1111 mDriverStopDelayMs = mContext.getResources().getInteger( 1112 R.integer.config_wifi_driver_stop_delay); 1113 1114 mBackgroundScanSupported = mContext.getResources().getBoolean( 1115 R.bool.config_wifi_background_scan_support); 1116 1117 mPrimaryDeviceType = mContext.getResources().getString( 1118 R.string.config_wifi_p2p_device_type); 1119 1120 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1121 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1122 1123 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1124 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1125 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1126 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1127 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1128 // TODO - needs to be a bit more dynamic 1129 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1130 1131 mContext.registerReceiver( 1132 new BroadcastReceiver() { 1133 @Override 1134 public void onReceive(Context context, Intent intent) { 1135 ArrayList<String> available = intent.getStringArrayListExtra( 1136 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1137 ArrayList<String> active = intent.getStringArrayListExtra( 1138 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1139 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1140 } 1141 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1142 1143 mContext.registerReceiver( 1144 new BroadcastReceiver() { 1145 @Override 1146 public void onReceive(Context context, Intent intent) { 1147 sScanAlarmIntentCount++; // Used for debug only 1148 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1149 if (VDBG) 1150 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1151 } 1152 }, 1153 new IntentFilter(ACTION_START_SCAN)); 1154 1155 mContext.registerReceiver( 1156 new BroadcastReceiver() { 1157 @Override 1158 public void onReceive(Context context, Intent intent) { 1159 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1160 mRestartAutoJoinOffloadCounter, "pno alarm"); 1161 if (DBG) 1162 loge("WiFiStateMachine PNO START ALARM sent"); 1163 } 1164 }, 1165 new IntentFilter(ACTION_START_PNO)); 1166 1167 1168 IntentFilter filter = new IntentFilter(); 1169 filter.addAction(Intent.ACTION_SCREEN_ON); 1170 filter.addAction(Intent.ACTION_SCREEN_OFF); 1171 mContext.registerReceiver( 1172 new BroadcastReceiver() { 1173 @Override 1174 public void onReceive(Context context, Intent intent) { 1175 String action = intent.getAction(); 1176 1177 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1178 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1179 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1180 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1181 } 1182 } 1183 }, filter); 1184 1185 mContext.registerReceiver( 1186 new BroadcastReceiver() { 1187 @Override 1188 public void onReceive(Context context, Intent intent) { 1189 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1190 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1191 } 1192 }, 1193 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1194 1195 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1196 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1197 new ContentObserver(getHandler()) { 1198 @Override 1199 public void onChange(boolean selfChange) { 1200 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1201 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1202 } 1203 }); 1204 1205 mContext.registerReceiver( 1206 new BroadcastReceiver() { 1207 @Override 1208 public void onReceive(Context context, Intent intent) { 1209 sendMessage(CMD_BOOT_COMPLETED); 1210 } 1211 }, 1212 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1213 1214 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1215 1216 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1217 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1218 1219 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1220 mSuspendWakeLock.setReferenceCounted(false); 1221 1222 mTcpBufferSizes = mContext.getResources().getString( 1223 com.android.internal.R.string.config_wifi_tcp_buffers); 1224 1225 addState(mDefaultState); 1226 addState(mInitialState, mDefaultState); 1227 addState(mSupplicantStartingState, mDefaultState); 1228 addState(mSupplicantStartedState, mDefaultState); 1229 addState(mDriverStartingState, mSupplicantStartedState); 1230 addState(mDriverStartedState, mSupplicantStartedState); 1231 addState(mScanModeState, mDriverStartedState); 1232 addState(mConnectModeState, mDriverStartedState); 1233 addState(mL2ConnectedState, mConnectModeState); 1234 addState(mObtainingIpState, mL2ConnectedState); 1235 addState(mVerifyingLinkState, mL2ConnectedState); 1236 addState(mConnectedState, mL2ConnectedState); 1237 addState(mRoamingState, mL2ConnectedState); 1238 addState(mDisconnectingState, mConnectModeState); 1239 addState(mDisconnectedState, mConnectModeState); 1240 addState(mWpsRunningState, mConnectModeState); 1241 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1242 addState(mDriverStoppingState, mSupplicantStartedState); 1243 addState(mDriverStoppedState, mSupplicantStartedState); 1244 addState(mSupplicantStoppingState, mDefaultState); 1245 addState(mSoftApStartingState, mDefaultState); 1246 addState(mSoftApStartedState, mDefaultState); 1247 addState(mTetheringState, mSoftApStartedState); 1248 addState(mTetheredState, mSoftApStartedState); 1249 addState(mUntetheringState, mSoftApStartedState); 1250 1251 setInitialState(mInitialState); 1252 1253 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1254 setLogOnlyTransitions(false); 1255 if (VDBG) setDbg(true); 1256 1257 //start the state machine 1258 start(); 1259 1260 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1261 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1262 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1263 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1264 } 1265 1266 1267 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1268 Intent intent = new Intent(action, null); 1269 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1270 //intent.setPackage(this.getClass().getPackage().getName()); 1271 intent.setPackage("android"); 1272 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1273 } 1274 1275 private int mVerboseLoggingLevel = 0; 1276 1277 int getVerboseLoggingLevel() { 1278 return mVerboseLoggingLevel; 1279 } 1280 1281 void enableVerboseLogging(int verbose) { 1282 mVerboseLoggingLevel = verbose; 1283 if (verbose > 0) { 1284 DBG = true; 1285 VDBG = true; 1286 PDBG = true; 1287 mLogMessages = true; 1288 mWifiNative.setSupplicantLogLevel("DEBUG"); 1289 } else { 1290 DBG = false; 1291 VDBG = false; 1292 PDBG = false; 1293 mLogMessages = false; 1294 mWifiNative.setSupplicantLogLevel("INFO"); 1295 } 1296 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1297 mWifiAutoJoinController.enableVerboseLogging(verbose); 1298 mWifiMonitor.enableVerboseLogging(verbose); 1299 mWifiNative.enableVerboseLogging(verbose); 1300 mWifiConfigStore.enableVerboseLogging(verbose); 1301 mSupplicantStateTracker.enableVerboseLogging(verbose); 1302 } 1303 1304 public void setHalBasedAutojoinOffload(int enabled) { 1305 // Shoult be used for debug only, triggered form developper settings 1306 // enabling HAl based PNO dynamically is not safe and not a normal operation 1307 mHalBasedPnoEnableInDevSettings = enabled > 0; 1308 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1309 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1310 sendMessage(CMD_DISCONNECT); 1311 } 1312 1313 int getHalBasedAutojoinOffload() { 1314 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1315 } 1316 1317 boolean useHalBasedAutoJoinOffload() { 1318 // all three settings need to be true: 1319 // - developper settings switch 1320 // - driver support 1321 // - config option 1322 return mHalBasedPnoEnableInDevSettings 1323 && mHalBasedPnoDriverSupported 1324 && mWifiConfigStore.enableHalBasedPno.get(); 1325 } 1326 1327 boolean allowFullBandScanAndAssociated() { 1328 1329 if (!getEnableAutoJoinWhenAssociated()) { 1330 if (DBG) { 1331 Log.e(TAG, "allowFullBandScanAndAssociated: " 1332 + " enableAutoJoinWhenAssociated : disallow"); 1333 } 1334 return false; 1335 } 1336 1337 if (mWifiInfo.txSuccessRate > 1338 mWifiConfigStore.maxTxPacketForFullScans 1339 || mWifiInfo.rxSuccessRate > 1340 mWifiConfigStore.maxRxPacketForFullScans) { 1341 if (DBG) { 1342 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1343 + mWifiInfo.txSuccessRate + " rx " 1344 + mWifiInfo.rxSuccessRate 1345 + " allow scan with traffic " + getAllowScansWithTraffic()); 1346 } 1347 // Too much traffic at the interface, hence no full band scan 1348 if (getAllowScansWithTraffic() == 0) { 1349 return false; 1350 } 1351 } 1352 1353 if (getCurrentState() != mConnectedState) { 1354 if (DBG) { 1355 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1356 } 1357 return false; 1358 } 1359 1360 return true; 1361 } 1362 1363 long mLastScanPermissionUpdate = 0; 1364 boolean mConnectedModeGScanOffloadStarted = false; 1365 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1366 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1367 // we want to throttle the GScan Stop->Start transition 1368 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1369 void updateAssociatedScanPermission() { 1370 1371 if (useHalBasedAutoJoinOffload()) { 1372 boolean allowed = allowFullBandScanAndAssociated(); 1373 1374 long now = System.currentTimeMillis(); 1375 if (mConnectedModeGScanOffloadStarted && !allowed) { 1376 if (DBG) { 1377 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1378 } 1379 stopPnoOffload(); 1380 stopGScan(" useHalBasedAutoJoinOffload"); 1381 } 1382 if (!mConnectedModeGScanOffloadStarted && allowed) { 1383 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1384 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1385 // to look for 5GHz BSSIDs and better networks 1386 if (DBG) { 1387 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1388 } 1389 startGScanConnectedModeOffload("updatePermission " 1390 + (now - mLastScanPermissionUpdate) + "ms"); 1391 mLastScanPermissionUpdate = now; 1392 } 1393 } 1394 } 1395 } 1396 1397 private int mAggressiveHandover = 0; 1398 1399 int getAggressiveHandover() { 1400 return mAggressiveHandover; 1401 } 1402 1403 void enableAggressiveHandover(int enabled) { 1404 mAggressiveHandover = enabled; 1405 } 1406 1407 public void clearANQPCache() { 1408 mWifiConfigStore.trimANQPCache(true); 1409 } 1410 1411 public void setAllowScansWithTraffic(int enabled) { 1412 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1413 } 1414 1415 public int getAllowScansWithTraffic() { 1416 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1417 } 1418 1419 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1420 boolean old_state = getEnableAutoJoinWhenAssociated(); 1421 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1422 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1423 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1424 null); 1425 } 1426 return true; 1427 } 1428 1429 public boolean getEnableAutoJoinWhenAssociated() { 1430 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1431 } 1432 /* 1433 * 1434 * Framework scan control 1435 */ 1436 1437 private boolean mAlarmEnabled = false; 1438 1439 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1440 1441 private void setScanAlarm(boolean enabled) { 1442 if (PDBG) { 1443 String state; 1444 if (enabled) state = "enabled"; else state = "disabled"; 1445 loge("setScanAlarm " + state 1446 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1447 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1448 } 1449 if (mBackgroundScanSupported == false) { 1450 // Scan alarm is only used for background scans if they are not 1451 // offloaded to the wifi chipset, hence enable the scan alarm 1452 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1453 enabled = true; 1454 } 1455 1456 if (enabled == mAlarmEnabled) return; 1457 if (enabled) { 1458 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1459 /* going to wake up the host processor to look for access points */ 1460 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1461 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1462 mScanIntent); 1463 mAlarmEnabled = true; 1464 } else { 1465 mAlarmManager.cancel(mScanIntent); 1466 mAlarmEnabled = false; 1467 } 1468 } 1469 1470 private void cancelDelayedScan() { 1471 mDelayedScanCounter.incrementAndGet(); 1472 } 1473 1474 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1475 ScanSettings settings, WorkSource workSource) { 1476 1477 if (counter != mDelayedScanCounter.get()) { 1478 return false; 1479 } 1480 if (restart) 1481 startDelayedScan(milli, settings, workSource); 1482 return true; 1483 } 1484 1485 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1486 if (milli <= 0) return; 1487 /** 1488 * The cases where the scan alarm should be run are : 1489 * - DisconnectedState && screenOn => used delayed timer 1490 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1491 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1492 * - ConnectedState && screenOn => used delayed timer 1493 */ 1494 1495 mDelayedScanCounter.incrementAndGet(); 1496 if (mScreenOn && 1497 (getCurrentState() == mDisconnectedState 1498 || getCurrentState() == mConnectedState)) { 1499 Bundle bundle = new Bundle(); 1500 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1501 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1502 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1503 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1504 mDelayedScanCounter.get(), bundle, milli); 1505 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1506 } else if (mBackgroundScanSupported == false 1507 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1508 setScanAlarm(true); 1509 if (DBG) loge("startDelayedScan start scan alarm -> " 1510 + mDelayedScanCounter + " milli " + milli); 1511 } else { 1512 if (DBG) loge("startDelayedScan unhandled -> " 1513 + mDelayedScanCounter + " milli " + milli); 1514 } 1515 } 1516 1517 private boolean setRandomMacOui() { 1518 String oui = mContext.getResources().getString( 1519 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1520 String[] ouiParts = oui.split("-"); 1521 byte[] ouiBytes = new byte[3]; 1522 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1523 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1524 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1525 1526 logd("Setting OUI to " + oui); 1527 return mWifiNative.setScanningMacOui(ouiBytes); 1528 } 1529 1530 /** 1531 * ****************************************************** 1532 * Methods exposed for public use 1533 * ****************************************************** 1534 */ 1535 1536 public Messenger getMessenger() { 1537 return new Messenger(getHandler()); 1538 } 1539 1540 public WifiMonitor getWifiMonitor() { 1541 return mWifiMonitor; 1542 } 1543 1544 /** 1545 * TODO: doc 1546 */ 1547 public boolean syncPingSupplicant(AsyncChannel channel) { 1548 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1549 boolean result = (resultMsg.arg1 != FAILURE); 1550 resultMsg.recycle(); 1551 return result; 1552 } 1553 1554 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1555 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1556 List<WifiChannel> list = null; 1557 if (resultMsg.obj != null) { 1558 list = new ArrayList<WifiChannel>(); 1559 String freqs = (String) resultMsg.obj; 1560 String[] lines = freqs.split("\n"); 1561 for (String line : lines) 1562 if (line.contains("MHz")) { 1563 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1564 WifiChannel c = new WifiChannel(); 1565 String[] prop = line.split(" "); 1566 if (prop.length < 5) continue; 1567 try { 1568 c.channelNum = Integer.parseInt(prop[1]); 1569 c.freqMHz = Integer.parseInt(prop[3]); 1570 } catch (NumberFormatException e) { 1571 } 1572 c.isDFS = line.contains("(DFS)"); 1573 list.add(c); 1574 } else if (line.contains("Mode[B] Channels:")) { 1575 // B channels are the same as G channels, skipped 1576 break; 1577 } 1578 } 1579 resultMsg.recycle(); 1580 return (list != null && list.size() > 0) ? list : null; 1581 } 1582 1583 /** 1584 * When settings allowing making use of untrusted networks change, trigger a scan 1585 * so as to kick of autojoin. 1586 */ 1587 public void startScanForUntrustedSettingChange() { 1588 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1589 } 1590 1591 /** 1592 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1593 * given to callingUid. 1594 * 1595 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1596 * workSource is specified. 1597 * @param workSource If not null, blame is given to workSource. 1598 * @param settings Scan settings, see {@link ScanSettings}. 1599 */ 1600 public void startScan(int callingUid, int scanCounter, 1601 ScanSettings settings, WorkSource workSource) { 1602 Bundle bundle = new Bundle(); 1603 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1604 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1605 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1606 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1607 } 1608 1609 // called from BroadcastListener 1610 1611 /** 1612 * Start reading new scan data 1613 * Data comes in as: 1614 * "scancount=5\n" 1615 * "nextcount=5\n" 1616 * "apcount=3\n" 1617 * "trunc\n" (optional) 1618 * "bssid=...\n" 1619 * "ssid=...\n" 1620 * "freq=...\n" (in Mhz) 1621 * "level=...\n" 1622 * "dist=...\n" (in cm) 1623 * "distsd=...\n" (standard deviation, in cm) 1624 * "====" 1625 * "bssid=...\n" 1626 * etc 1627 * "====" 1628 * "bssid=...\n" 1629 * etc 1630 * "%%%%" 1631 * "apcount=2\n" 1632 * "bssid=...\n" 1633 * etc 1634 * "%%%% 1635 * etc 1636 * "----" 1637 */ 1638 private final static boolean DEBUG_PARSE = false; 1639 1640 private long mDisconnectedTimeStamp = 0; 1641 1642 public long getDisconnectedTimeMilli() { 1643 if (getCurrentState() == mDisconnectedState 1644 && mDisconnectedTimeStamp != 0) { 1645 long now_ms = System.currentTimeMillis(); 1646 return now_ms - mDisconnectedTimeStamp; 1647 } 1648 return 0; 1649 } 1650 1651 // Keeping track of scan requests 1652 private long lastStartScanTimeStamp = 0; 1653 private long lastScanDuration = 0; 1654 // Last connect attempt is used to prevent scan requests: 1655 // - for a period of 10 seconds after attempting to connect 1656 private long lastConnectAttempt = 0; 1657 private String lastScanFreqs = null; 1658 1659 // For debugging, keep track of last message status handling 1660 // TODO, find an equivalent mechanism as part of parent class 1661 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1662 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1663 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1664 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1665 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1666 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1667 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1668 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1669 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1670 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1671 1672 private int messageHandlingStatus = 0; 1673 1674 //TODO: this is used only to track connection attempts, however the link state and packet per 1675 //TODO: second logic should be folded into that 1676 private boolean checkOrDeferScanAllowed(Message msg) { 1677 long now = System.currentTimeMillis(); 1678 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1679 Message dmsg = Message.obtain(msg); 1680 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1681 return false; 1682 } 1683 return true; 1684 } 1685 1686 private int mOnTime = 0; 1687 private int mTxTime = 0; 1688 private int mRxTime = 0; 1689 private int mOnTimeStartScan = 0; 1690 private int mTxTimeStartScan = 0; 1691 private int mRxTimeStartScan = 0; 1692 private int mOnTimeScan = 0; 1693 private int mTxTimeScan = 0; 1694 private int mRxTimeScan = 0; 1695 private int mOnTimeThisScan = 0; 1696 private int mTxTimeThisScan = 0; 1697 private int mRxTimeThisScan = 0; 1698 1699 private int mOnTimeScreenStateChange = 0; 1700 private int mOnTimeAtLastReport = 0; 1701 private long lastOntimeReportTimeStamp = 0; 1702 private long lastScreenStateChangeTimeStamp = 0; 1703 private int mOnTimeLastReport = 0; 1704 private int mTxTimeLastReport = 0; 1705 private int mRxTimeLastReport = 0; 1706 1707 private long lastLinkLayerStatsUpdate = 0; 1708 1709 String reportOnTime() { 1710 long now = System.currentTimeMillis(); 1711 StringBuilder sb = new StringBuilder(); 1712 // Report stats since last report 1713 int on = mOnTime - mOnTimeLastReport; 1714 mOnTimeLastReport = mOnTime; 1715 int tx = mTxTime - mTxTimeLastReport; 1716 mTxTimeLastReport = mTxTime; 1717 int rx = mRxTime - mRxTimeLastReport; 1718 mRxTimeLastReport = mRxTime; 1719 int period = (int) (now - lastOntimeReportTimeStamp); 1720 lastOntimeReportTimeStamp = now; 1721 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1722 // Report stats since Screen State Changed 1723 on = mOnTime - mOnTimeScreenStateChange; 1724 period = (int) (now - lastScreenStateChangeTimeStamp); 1725 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1726 return sb.toString(); 1727 } 1728 1729 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1730 WifiLinkLayerStats stats = null; 1731 if (mWifiLinkLayerStatsSupported > 0) { 1732 String name = "wlan0"; 1733 stats = mWifiNative.getWifiLinkLayerStats(name); 1734 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1735 mWifiLinkLayerStatsSupported -= 1; 1736 } else if (stats != null) { 1737 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1738 mOnTime = stats.on_time; 1739 mTxTime = stats.tx_time; 1740 mRxTime = stats.rx_time; 1741 mRunningBeaconCount = stats.beacon_rx; 1742 if (dbg) { 1743 // loge(stats.toString()); 1744 } 1745 } 1746 } 1747 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1748 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1749 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1750 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1751 } else { 1752 mWifiInfo.updatePacketRates(stats); 1753 } 1754 if (useHalBasedAutoJoinOffload()) { 1755 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1756 } 1757 return stats; 1758 } 1759 1760 void startRadioScanStats() { 1761 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1762 if (stats != null) { 1763 mOnTimeStartScan = stats.on_time; 1764 mTxTimeStartScan = stats.tx_time; 1765 mRxTimeStartScan = stats.rx_time; 1766 mOnTime = stats.on_time; 1767 mTxTime = stats.tx_time; 1768 mRxTime = stats.rx_time; 1769 } 1770 } 1771 1772 void closeRadioScanStats() { 1773 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1774 if (stats != null) { 1775 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1776 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1777 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1778 mOnTimeScan += mOnTimeThisScan; 1779 mTxTimeScan += mTxTimeThisScan; 1780 mRxTimeScan += mRxTimeThisScan; 1781 } 1782 } 1783 1784 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1785 private void noteScanStart(int callingUid, WorkSource workSource) { 1786 long now = System.currentTimeMillis(); 1787 lastStartScanTimeStamp = now; 1788 lastScanDuration = 0; 1789 if (DBG) { 1790 String ts = String.format("[%,d ms]", now); 1791 if (workSource != null) { 1792 loge(ts + " noteScanStart" + workSource.toString() 1793 + " uid " + Integer.toString(callingUid)); 1794 } else { 1795 loge(ts + " noteScanstart no scan source" 1796 + " uid " + Integer.toString(callingUid)); 1797 } 1798 } 1799 startRadioScanStats(); 1800 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1801 && callingUid != SCAN_ALARM_SOURCE) 1802 || workSource != null)) { 1803 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1804 1805 WorkSource batteryWorkSource = mScanWorkSource; 1806 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1807 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1808 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1809 } 1810 1811 try { 1812 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1813 } catch (RemoteException e) { 1814 log(e.toString()); 1815 } 1816 } 1817 } 1818 1819 private void noteScanEnd() { 1820 long now = System.currentTimeMillis(); 1821 if (lastStartScanTimeStamp != 0) { 1822 lastScanDuration = now - lastStartScanTimeStamp; 1823 } 1824 lastStartScanTimeStamp = 0; 1825 if (DBG) { 1826 String ts = String.format("[%,d ms]", now); 1827 if (mScanWorkSource != null) 1828 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1829 + " onTime=" + mOnTimeThisScan); 1830 else 1831 loge(ts + " noteScanEnd no scan source" 1832 + " onTime=" + mOnTimeThisScan); 1833 } 1834 if (mScanWorkSource != null) { 1835 try { 1836 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1837 } catch (RemoteException e) { 1838 log(e.toString()); 1839 } finally { 1840 mScanWorkSource = null; 1841 } 1842 } 1843 } 1844 1845 private void handleScanRequest(int type, Message message) { 1846 ScanSettings settings = null; 1847 WorkSource workSource = null; 1848 1849 // unbundle parameters 1850 Bundle bundle = (Bundle) message.obj; 1851 1852 if (bundle != null) { 1853 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1854 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1855 } 1856 1857 // parse scan settings 1858 String freqs = null; 1859 if (settings != null && settings.channelSet != null) { 1860 StringBuilder sb = new StringBuilder(); 1861 boolean first = true; 1862 for (WifiChannel channel : settings.channelSet) { 1863 if (!first) sb.append(','); 1864 else first = false; 1865 sb.append(channel.freqMHz); 1866 } 1867 freqs = sb.toString(); 1868 } 1869 1870 // call wifi native to start the scan 1871 if (startScanNative(type, freqs)) { 1872 // only count battery consumption if scan request is accepted 1873 noteScanStart(message.arg1, workSource); 1874 // a full scan covers everything, clearing scan request buffer 1875 if (freqs == null) 1876 mBufferedScanMsg.clear(); 1877 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1878 if (workSource != null) { 1879 // External worksource was passed along the scan request, 1880 // hence always send a broadcast 1881 mSendScanResultsBroadcast = true; 1882 } 1883 return; 1884 } 1885 1886 // if reach here, scan request is rejected 1887 1888 if (!mIsScanOngoing) { 1889 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1890 1891 // discard this request and pop up the next one 1892 if (mBufferedScanMsg.size() > 0) { 1893 sendMessage(mBufferedScanMsg.remove()); 1894 } 1895 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1896 } else if (!mIsFullScanOngoing) { 1897 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1898 // buffer the scan request to make sure specified channels will be scanned eventually 1899 if (freqs == null) 1900 mBufferedScanMsg.clear(); 1901 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1902 Message msg = obtainMessage(CMD_START_SCAN, 1903 message.arg1, message.arg2, bundle); 1904 mBufferedScanMsg.add(msg); 1905 } else { 1906 // if too many requests in buffer, combine them into a single full scan 1907 bundle = new Bundle(); 1908 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1909 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1910 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1911 mBufferedScanMsg.clear(); 1912 mBufferedScanMsg.add(msg); 1913 } 1914 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1915 } else { 1916 // mIsScanOngoing and mIsFullScanOngoing 1917 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1918 } 1919 } 1920 1921 1922 /** 1923 * return true iff scan request is accepted 1924 */ 1925 private boolean startScanNative(int type, String freqs) { 1926 if (mWifiNative.scan(type, freqs)) { 1927 mIsScanOngoing = true; 1928 mIsFullScanOngoing = (freqs == null); 1929 lastScanFreqs = freqs; 1930 return true; 1931 } 1932 return false; 1933 } 1934 1935 /** 1936 * TODO: doc 1937 */ 1938 public void setSupplicantRunning(boolean enable) { 1939 if (enable) { 1940 sendMessage(CMD_START_SUPPLICANT); 1941 } else { 1942 sendMessage(CMD_STOP_SUPPLICANT); 1943 } 1944 } 1945 1946 /** 1947 * TODO: doc 1948 */ 1949 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1950 if (enable) { 1951 sendMessage(CMD_START_AP, wifiConfig); 1952 } else { 1953 sendMessage(CMD_STOP_AP); 1954 } 1955 } 1956 1957 public void setWifiApConfiguration(WifiConfiguration config) { 1958 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1959 } 1960 1961 public WifiConfiguration syncGetWifiApConfiguration() { 1962 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1963 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1964 resultMsg.recycle(); 1965 return ret; 1966 } 1967 1968 /** 1969 * TODO: doc 1970 */ 1971 public int syncGetWifiState() { 1972 return mWifiState.get(); 1973 } 1974 1975 /** 1976 * TODO: doc 1977 */ 1978 public String syncGetWifiStateByName() { 1979 switch (mWifiState.get()) { 1980 case WIFI_STATE_DISABLING: 1981 return "disabling"; 1982 case WIFI_STATE_DISABLED: 1983 return "disabled"; 1984 case WIFI_STATE_ENABLING: 1985 return "enabling"; 1986 case WIFI_STATE_ENABLED: 1987 return "enabled"; 1988 case WIFI_STATE_UNKNOWN: 1989 return "unknown state"; 1990 default: 1991 return "[invalid state]"; 1992 } 1993 } 1994 1995 /** 1996 * TODO: doc 1997 */ 1998 public int syncGetWifiApState() { 1999 return mWifiApState.get(); 2000 } 2001 2002 /** 2003 * TODO: doc 2004 */ 2005 public String syncGetWifiApStateByName() { 2006 switch (mWifiApState.get()) { 2007 case WIFI_AP_STATE_DISABLING: 2008 return "disabling"; 2009 case WIFI_AP_STATE_DISABLED: 2010 return "disabled"; 2011 case WIFI_AP_STATE_ENABLING: 2012 return "enabling"; 2013 case WIFI_AP_STATE_ENABLED: 2014 return "enabled"; 2015 case WIFI_AP_STATE_FAILED: 2016 return "failed"; 2017 default: 2018 return "[invalid state]"; 2019 } 2020 } 2021 2022 /** 2023 * Get status information for the current connection, if any. 2024 * 2025 * @return a {@link WifiInfo} object containing information about the current connection 2026 */ 2027 public WifiInfo syncRequestConnectionInfo() { 2028 return getWiFiInfoForUid(Binder.getCallingUid()); 2029 } 2030 2031 public DhcpResults syncGetDhcpResults() { 2032 synchronized (mDhcpResultsLock) { 2033 return new DhcpResults(mDhcpResults); 2034 } 2035 } 2036 2037 /** 2038 * TODO: doc 2039 */ 2040 public void setDriverStart(boolean enable) { 2041 if (enable) { 2042 sendMessage(CMD_START_DRIVER); 2043 } else { 2044 sendMessage(CMD_STOP_DRIVER); 2045 } 2046 } 2047 2048 /** 2049 * TODO: doc 2050 */ 2051 public void setOperationalMode(int mode) { 2052 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2053 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2054 } 2055 2056 /** 2057 * TODO: doc 2058 */ 2059 public List<ScanResult> syncGetScanResultsList() { 2060 synchronized (mScanResultCache) { 2061 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2062 for (ScanDetail result : mScanResults) { 2063 scanList.add(new ScanResult(result.getScanResult())); 2064 } 2065 return scanList; 2066 } 2067 } 2068 2069 public void disableEphemeralNetwork(String SSID) { 2070 if (SSID != null) { 2071 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2072 } 2073 } 2074 2075 /** 2076 * Get unsynchronized pointer to scan result list 2077 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2078 */ 2079 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2080 return mScanResults; 2081 } 2082 2083 /** 2084 * Disconnect from Access Point 2085 */ 2086 public void disconnectCommand() { 2087 sendMessage(CMD_DISCONNECT); 2088 } 2089 2090 public void disconnectCommand(int uid, int reason) { 2091 sendMessage(CMD_DISCONNECT, uid, reason); 2092 } 2093 2094 /** 2095 * Initiate a reconnection to AP 2096 */ 2097 public void reconnectCommand() { 2098 sendMessage(CMD_RECONNECT); 2099 } 2100 2101 /** 2102 * Initiate a re-association to AP 2103 */ 2104 public void reassociateCommand() { 2105 sendMessage(CMD_REASSOCIATE); 2106 } 2107 2108 /** 2109 * Reload networks and then reconnect; helps load correct data for TLS networks 2110 */ 2111 2112 public void reloadTlsNetworksAndReconnect() { 2113 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2114 } 2115 2116 /** 2117 * Add a network synchronously 2118 * 2119 * @return network id of the new network 2120 */ 2121 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2122 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2123 int result = resultMsg.arg1; 2124 resultMsg.recycle(); 2125 return result; 2126 } 2127 2128 /** 2129 * Get configured networks synchronously 2130 * 2131 * @param channel 2132 * @return 2133 */ 2134 2135 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2136 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2137 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2138 resultMsg.recycle(); 2139 return result; 2140 } 2141 2142 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2143 Message resultMsg = channel.sendMessageSynchronously( 2144 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2145 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2146 resultMsg.recycle(); 2147 return result; 2148 } 2149 2150 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2151 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2152 return (WifiConfiguration) resultMsg.obj; 2153 } 2154 2155 /** 2156 * Get connection statistics synchronously 2157 * 2158 * @param channel 2159 * @return 2160 */ 2161 2162 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2163 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2164 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2165 resultMsg.recycle(); 2166 return result; 2167 } 2168 2169 /** 2170 * Get adaptors synchronously 2171 */ 2172 2173 public int syncGetSupportedFeatures(AsyncChannel channel) { 2174 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2175 int supportedFeatureSet = resultMsg.arg1; 2176 resultMsg.recycle(); 2177 return supportedFeatureSet; 2178 } 2179 2180 /** 2181 * Get link layers stats for adapter synchronously 2182 */ 2183 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2184 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2185 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2186 resultMsg.recycle(); 2187 return result; 2188 } 2189 2190 /** 2191 * Delete a network 2192 * 2193 * @param networkId id of the network to be removed 2194 */ 2195 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2196 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2197 boolean result = (resultMsg.arg1 != FAILURE); 2198 resultMsg.recycle(); 2199 return result; 2200 } 2201 2202 /** 2203 * Enable a network 2204 * 2205 * @param netId network id of the network 2206 * @param disableOthers true, if all other networks have to be disabled 2207 * @return {@code true} if the operation succeeds, {@code false} otherwise 2208 */ 2209 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2210 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2211 disableOthers ? 1 : 0); 2212 boolean result = (resultMsg.arg1 != FAILURE); 2213 resultMsg.recycle(); 2214 return result; 2215 } 2216 2217 /** 2218 * Disable a network 2219 * 2220 * @param netId network id of the network 2221 * @return {@code true} if the operation succeeds, {@code false} otherwise 2222 */ 2223 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2224 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2225 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2226 resultMsg.recycle(); 2227 return result; 2228 } 2229 2230 /** 2231 * Retrieves a WPS-NFC configuration token for the specified network 2232 * 2233 * @return a hex string representation of the WPS-NFC configuration token 2234 */ 2235 public String syncGetWpsNfcConfigurationToken(int netId) { 2236 return mWifiNative.getNfcWpsConfigurationToken(netId); 2237 } 2238 2239 void enableBackgroundScan(boolean enable) { 2240 if (enable) { 2241 mWifiConfigStore.enableAllNetworks(); 2242 } 2243 boolean ret = mWifiNative.enableBackgroundScan(enable); 2244 if (ret) { 2245 mLegacyPnoEnabled = enable; 2246 } else { 2247 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2248 } 2249 } 2250 2251 /** 2252 * Blacklist a BSSID. This will avoid the AP if there are 2253 * alternate APs to connect 2254 * 2255 * @param bssid BSSID of the network 2256 */ 2257 public void addToBlacklist(String bssid) { 2258 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2259 } 2260 2261 /** 2262 * Clear the blacklist list 2263 */ 2264 public void clearBlacklist() { 2265 sendMessage(CMD_CLEAR_BLACKLIST); 2266 } 2267 2268 public void enableRssiPolling(boolean enabled) { 2269 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2270 } 2271 2272 public void enableAllNetworks() { 2273 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2274 } 2275 2276 /** 2277 * Start filtering Multicast v4 packets 2278 */ 2279 public void startFilteringMulticastV4Packets() { 2280 mFilteringMulticastV4Packets.set(true); 2281 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2282 } 2283 2284 /** 2285 * Stop filtering Multicast v4 packets 2286 */ 2287 public void stopFilteringMulticastV4Packets() { 2288 mFilteringMulticastV4Packets.set(false); 2289 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2290 } 2291 2292 /** 2293 * Start filtering Multicast v4 packets 2294 */ 2295 public void startFilteringMulticastV6Packets() { 2296 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2297 } 2298 2299 /** 2300 * Stop filtering Multicast v4 packets 2301 */ 2302 public void stopFilteringMulticastV6Packets() { 2303 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2304 } 2305 2306 /** 2307 * Set high performance mode of operation. 2308 * Enabling would set active power mode and disable suspend optimizations; 2309 * disabling would set auto power mode and enable suspend optimizations 2310 * 2311 * @param enable true if enable, false otherwise 2312 */ 2313 public void setHighPerfModeEnabled(boolean enable) { 2314 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2315 } 2316 2317 /** 2318 * Set the country code 2319 * 2320 * @param countryCode following ISO 3166 format 2321 * @param persist {@code true} if the setting should be remembered. 2322 */ 2323 public synchronized void setCountryCode(String countryCode, boolean persist) { 2324 // If it's a good country code, apply after the current 2325 // wifi connection is terminated; ignore resetting of code 2326 // for now (it is unclear what the chipset should do when 2327 // country code is reset) 2328 2329 if (TextUtils.isEmpty(countryCode)) { 2330 log("Ignoring resetting of country code"); 2331 } else { 2332 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2333 // else only when the new country code is different from the current one to set 2334 int countryCodeSequence = mCountryCodeSequence.get(); 2335 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2336 2337 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2338 mSetCountryCode = countryCode; 2339 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2340 countryCode); 2341 } 2342 2343 if (persist) { 2344 Settings.Global.putString(mContext.getContentResolver(), 2345 Settings.Global.WIFI_COUNTRY_CODE, 2346 countryCode); 2347 } 2348 } 2349 } 2350 2351 /** 2352 * Get Network object of current wifi network 2353 * @return Network object of current wifi network 2354 */ 2355 public Network getCurrentNetwork() { 2356 if (mNetworkAgent != null) { 2357 return new Network(mNetworkAgent.netId); 2358 } else { 2359 return null; 2360 } 2361 } 2362 2363 /** 2364 * Get the country code 2365 * 2366 * @param countryCode following ISO 3166 format 2367 */ 2368 public String getCountryCode() { 2369 return mSetCountryCode; 2370 } 2371 2372 2373 /** 2374 * Set the operational frequency band 2375 * 2376 * @param band 2377 * @param persist {@code true} if the setting should be remembered. 2378 */ 2379 public void setFrequencyBand(int band, boolean persist) { 2380 if (persist) { 2381 Settings.Global.putInt(mContext.getContentResolver(), 2382 Settings.Global.WIFI_FREQUENCY_BAND, 2383 band); 2384 } 2385 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2386 } 2387 2388 /** 2389 * Enable TDLS for a specific MAC address 2390 */ 2391 public void enableTdls(String remoteMacAddress, boolean enable) { 2392 int enabler = enable ? 1 : 0; 2393 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2394 } 2395 2396 /** 2397 * Returns the operational frequency band 2398 */ 2399 public int getFrequencyBand() { 2400 return mFrequencyBand.get(); 2401 } 2402 2403 /** 2404 * Returns the wifi configuration file 2405 */ 2406 public String getConfigFile() { 2407 return mWifiConfigStore.getConfigFile(); 2408 } 2409 2410 /** 2411 * Send a message indicating bluetooth adapter connection state changed 2412 */ 2413 public void sendBluetoothAdapterStateChange(int state) { 2414 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2415 } 2416 2417 /** 2418 * Send a message indicating a package has been uninstalled. 2419 */ 2420 public void removeAppConfigs(String packageName, int uid) { 2421 // Build partial AppInfo manually - package may not exist in database any more 2422 ApplicationInfo ai = new ApplicationInfo(); 2423 ai.packageName = packageName; 2424 ai.uid = uid; 2425 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2426 } 2427 2428 /** 2429 * Send a message indicating a user has been removed. 2430 */ 2431 public void removeUserConfigs(int userId) { 2432 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2433 } 2434 2435 /** 2436 * Save configuration on supplicant 2437 * 2438 * @return {@code true} if the operation succeeds, {@code false} otherwise 2439 * <p/> 2440 * TODO: deprecate this 2441 */ 2442 public boolean syncSaveConfig(AsyncChannel channel) { 2443 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2444 boolean result = (resultMsg.arg1 != FAILURE); 2445 resultMsg.recycle(); 2446 return result; 2447 } 2448 2449 public void updateBatteryWorkSource(WorkSource newSource) { 2450 synchronized (mRunningWifiUids) { 2451 try { 2452 if (newSource != null) { 2453 mRunningWifiUids.set(newSource); 2454 } 2455 if (mIsRunning) { 2456 if (mReportedRunning) { 2457 // If the work source has changed since last time, need 2458 // to remove old work from battery stats. 2459 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2460 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2461 mRunningWifiUids); 2462 mLastRunningWifiUids.set(mRunningWifiUids); 2463 } 2464 } else { 2465 // Now being started, report it. 2466 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2467 mLastRunningWifiUids.set(mRunningWifiUids); 2468 mReportedRunning = true; 2469 } 2470 } else { 2471 if (mReportedRunning) { 2472 // Last reported we were running, time to stop. 2473 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2474 mLastRunningWifiUids.clear(); 2475 mReportedRunning = false; 2476 } 2477 } 2478 mWakeLock.setWorkSource(newSource); 2479 } catch (RemoteException ignore) { 2480 } 2481 } 2482 } 2483 2484 @Override 2485 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2486 super.dump(fd, pw, args); 2487 mSupplicantStateTracker.dump(fd, pw, args); 2488 pw.println("mLinkProperties " + mLinkProperties); 2489 pw.println("mWifiInfo " + mWifiInfo); 2490 pw.println("mDhcpResults " + mDhcpResults); 2491 pw.println("mNetworkInfo " + mNetworkInfo); 2492 pw.println("mLastSignalLevel " + mLastSignalLevel); 2493 pw.println("mLastBssid " + mLastBssid); 2494 pw.println("mLastNetworkId " + mLastNetworkId); 2495 pw.println("mOperationalMode " + mOperationalMode); 2496 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2497 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2498 pw.println("Supplicant status " + mWifiNative.status(true)); 2499 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2500 pw.println("mSetCountryCode " + mSetCountryCode); 2501 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2502 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2503 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2504 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2505 pw.println("SSID whitelist :" ); 2506 for (int i=0; i < mWhiteListedSsids.length; i++) { 2507 pw.println(" " + mWhiteListedSsids[i]); 2508 } 2509 } 2510 mNetworkFactory.dump(fd, pw, args); 2511 mUntrustedNetworkFactory.dump(fd, pw, args); 2512 pw.println(); 2513 mWifiConfigStore.dump(fd, pw, args); 2514 pw.println(); 2515 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2516 mWifiLogger.dump(fd, pw, args); 2517 } 2518 2519 /** 2520 * ****************************************************** 2521 * Internal private functions 2522 * ****************************************************** 2523 */ 2524 2525 private void logStateAndMessage(Message message, String state) { 2526 messageHandlingStatus = 0; 2527 if (mLogMessages) { 2528 //long now = SystemClock.elapsedRealtimeNanos(); 2529 //String ts = String.format("[%,d us]", now/1000); 2530 2531 loge(" " + state + " " + getLogRecString(message)); 2532 } 2533 } 2534 2535 /** 2536 * helper, prints the milli time since boot wi and w/o suspended time 2537 */ 2538 String printTime() { 2539 StringBuilder sb = new StringBuilder(); 2540 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2541 sb.append("/").append(SystemClock.elapsedRealtime()); 2542 return sb.toString(); 2543 } 2544 2545 /** 2546 * Return the additional string to be logged by LogRec, default 2547 * 2548 * @param msg that was processed 2549 * @return information to be logged as a String 2550 */ 2551 protected String getLogRecString(Message msg) { 2552 WifiConfiguration config; 2553 Long now; 2554 String report; 2555 String key; 2556 StringBuilder sb = new StringBuilder(); 2557 if (mScreenOn) { 2558 sb.append("!"); 2559 } 2560 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2561 sb.append("(").append(messageHandlingStatus).append(")"); 2562 } 2563 sb.append(smToString(msg)); 2564 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2565 sb.append(" uid=" + msg.sendingUid); 2566 } 2567 sb.append(" ").append(printTime()); 2568 switch (msg.what) { 2569 case CMD_STARTED_GSCAN_DBG: 2570 case CMD_STARTED_PNO_DBG: 2571 sb.append(" "); 2572 sb.append(Integer.toString(msg.arg1)); 2573 sb.append(" "); 2574 sb.append(Integer.toString(msg.arg2)); 2575 if (msg.obj != null) { 2576 sb.append(" " + (String)msg.obj); 2577 } 2578 break; 2579 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2580 sb.append(" "); 2581 sb.append(Integer.toString(msg.arg1)); 2582 sb.append(" "); 2583 sb.append(Integer.toString(msg.arg2)); 2584 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2585 if (msg.obj != null) { 2586 sb.append(" " + (String)msg.obj); 2587 } 2588 break; 2589 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2590 sb.append(" "); 2591 sb.append(Integer.toString(msg.arg1)); 2592 sb.append(" "); 2593 sb.append(Integer.toString(msg.arg2)); 2594 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2595 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2596 sb.append(" autojoinAllowed="); 2597 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2598 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2599 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2600 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2601 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2602 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2603 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2604 break; 2605 case CMD_PNO_NETWORK_FOUND: 2606 sb.append(" "); 2607 sb.append(Integer.toString(msg.arg1)); 2608 sb.append(" "); 2609 sb.append(Integer.toString(msg.arg2)); 2610 if (msg.obj != null) { 2611 ScanResult[] results = (ScanResult[])msg.obj; 2612 for (int i = 0; i < results.length; i++) { 2613 sb.append(" ").append(results[i].SSID).append(" "); 2614 sb.append(results[i].frequency); 2615 sb.append(" ").append(results[i].level); 2616 } 2617 } 2618 break; 2619 case CMD_START_SCAN: 2620 now = System.currentTimeMillis(); 2621 sb.append(" "); 2622 sb.append(Integer.toString(msg.arg1)); 2623 sb.append(" "); 2624 sb.append(Integer.toString(msg.arg2)); 2625 sb.append(" ic="); 2626 sb.append(Integer.toString(sScanAlarmIntentCount)); 2627 if (msg.obj != null) { 2628 Bundle bundle = (Bundle) msg.obj; 2629 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2630 if (request != 0) { 2631 sb.append(" proc(ms):").append(now - request); 2632 } 2633 } 2634 if (mIsScanOngoing) sb.append(" onGoing"); 2635 if (mIsFullScanOngoing) sb.append(" full"); 2636 if (lastStartScanTimeStamp != 0) { 2637 sb.append(" started:").append(lastStartScanTimeStamp); 2638 sb.append(",").append(now - lastStartScanTimeStamp); 2639 } 2640 if (lastScanDuration != 0) { 2641 sb.append(" dur:").append(lastScanDuration); 2642 } 2643 sb.append(" cnt=").append(mDelayedScanCounter); 2644 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2645 sb.append(" f=").append(mWifiInfo.getFrequency()); 2646 sb.append(" sc=").append(mWifiInfo.score); 2647 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2648 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2649 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2650 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2651 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2652 if (lastScanFreqs != null) { 2653 sb.append(" list=").append(lastScanFreqs); 2654 } else { 2655 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2656 } 2657 report = reportOnTime(); 2658 if (report != null) { 2659 sb.append(" ").append(report); 2660 } 2661 break; 2662 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2663 sb.append(" "); 2664 sb.append(Integer.toString(msg.arg1)); 2665 sb.append(" "); 2666 sb.append(Integer.toString(msg.arg2)); 2667 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2668 if (stateChangeResult != null) { 2669 sb.append(stateChangeResult.toString()); 2670 } 2671 break; 2672 case WifiManager.SAVE_NETWORK: 2673 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2674 sb.append(" "); 2675 sb.append(Integer.toString(msg.arg1)); 2676 sb.append(" "); 2677 sb.append(Integer.toString(msg.arg2)); 2678 if (lastSavedConfigurationAttempt != null) { 2679 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2680 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2681 if (lastSavedConfigurationAttempt.hiddenSSID) { 2682 sb.append(" hidden"); 2683 } 2684 if (lastSavedConfigurationAttempt.preSharedKey != null 2685 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2686 sb.append(" hasPSK"); 2687 } 2688 if (lastSavedConfigurationAttempt.ephemeral) { 2689 sb.append(" ephemeral"); 2690 } 2691 if (lastSavedConfigurationAttempt.selfAdded) { 2692 sb.append(" selfAdded"); 2693 } 2694 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2695 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2696 } 2697 break; 2698 case WifiManager.FORGET_NETWORK: 2699 sb.append(" "); 2700 sb.append(Integer.toString(msg.arg1)); 2701 sb.append(" "); 2702 sb.append(Integer.toString(msg.arg2)); 2703 if (lastForgetConfigurationAttempt != null) { 2704 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2705 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2706 if (lastForgetConfigurationAttempt.hiddenSSID) { 2707 sb.append(" hidden"); 2708 } 2709 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2710 sb.append(" hasPSK"); 2711 } 2712 if (lastForgetConfigurationAttempt.ephemeral) { 2713 sb.append(" ephemeral"); 2714 } 2715 if (lastForgetConfigurationAttempt.selfAdded) { 2716 sb.append(" selfAdded"); 2717 } 2718 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2719 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2720 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2721 } 2722 break; 2723 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2724 sb.append(" "); 2725 sb.append(Integer.toString(msg.arg1)); 2726 sb.append(" "); 2727 sb.append(Integer.toString(msg.arg2)); 2728 String bssid = (String) msg.obj; 2729 if (bssid != null && bssid.length() > 0) { 2730 sb.append(" "); 2731 sb.append(bssid); 2732 } 2733 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2734 break; 2735 case WifiMonitor.SCAN_RESULTS_EVENT: 2736 sb.append(" "); 2737 sb.append(Integer.toString(msg.arg1)); 2738 sb.append(" "); 2739 sb.append(Integer.toString(msg.arg2)); 2740 if (mScanResults != null) { 2741 sb.append(" found="); 2742 sb.append(mScanResults.size()); 2743 } 2744 sb.append(" known=").append(mNumScanResultsKnown); 2745 sb.append(" got=").append(mNumScanResultsReturned); 2746 if (lastScanDuration != 0) { 2747 sb.append(" dur:").append(lastScanDuration); 2748 } 2749 if (mOnTime != 0) { 2750 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2751 sb.append(",").append(mOnTime); 2752 } 2753 if (mTxTime != 0) { 2754 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2755 sb.append(",").append(mTxTime); 2756 } 2757 if (mRxTime != 0) { 2758 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2759 sb.append(",").append(mRxTime); 2760 } 2761 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2762 sb.append(String.format(" con=%d", mConnectionRequests)); 2763 key = mWifiConfigStore.getLastSelectedConfiguration(); 2764 if (key != null) { 2765 sb.append(" last=").append(key); 2766 } 2767 break; 2768 case WifiMonitor.SCAN_FAILED_EVENT: 2769 break; 2770 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2771 sb.append(" "); 2772 sb.append(Integer.toString(msg.arg1)); 2773 sb.append(" "); 2774 sb.append(Integer.toString(msg.arg2)); 2775 sb.append(" ").append(mLastBssid); 2776 sb.append(" nid=").append(mLastNetworkId); 2777 config = getCurrentWifiConfiguration(); 2778 if (config != null) { 2779 sb.append(" ").append(config.configKey()); 2780 } 2781 key = mWifiConfigStore.getLastSelectedConfiguration(); 2782 if (key != null) { 2783 sb.append(" last=").append(key); 2784 } 2785 break; 2786 case CMD_TARGET_BSSID: 2787 case CMD_ASSOCIATED_BSSID: 2788 sb.append(" "); 2789 sb.append(Integer.toString(msg.arg1)); 2790 sb.append(" "); 2791 sb.append(Integer.toString(msg.arg2)); 2792 if (msg.obj != null) { 2793 sb.append(" BSSID=").append((String) msg.obj); 2794 } 2795 if (mTargetRoamBSSID != null) { 2796 sb.append(" Target=").append(mTargetRoamBSSID); 2797 } 2798 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2799 break; 2800 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2801 if (msg.obj != null) { 2802 sb.append(" ").append((String) msg.obj); 2803 } 2804 sb.append(" nid=").append(msg.arg1); 2805 sb.append(" reason=").append(msg.arg2); 2806 if (mLastBssid != null) { 2807 sb.append(" lastbssid=").append(mLastBssid); 2808 } 2809 if (mWifiInfo.getFrequency() != -1) { 2810 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2811 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2812 } 2813 if (linkDebouncing) { 2814 sb.append(" debounce"); 2815 } 2816 break; 2817 case WifiMonitor.SSID_TEMP_DISABLED: 2818 case WifiMonitor.SSID_REENABLED: 2819 sb.append(" nid=").append(msg.arg1); 2820 if (msg.obj != null) { 2821 sb.append(" ").append((String) msg.obj); 2822 } 2823 config = getCurrentWifiConfiguration(); 2824 if (config != null) { 2825 sb.append(" cur=").append(config.configKey()); 2826 sb.append(" ajst=").append(config.autoJoinStatus); 2827 if (config.selfAdded) { 2828 sb.append(" selfAdded"); 2829 } 2830 if (config.status != 0) { 2831 sb.append(" st=").append(config.status); 2832 sb.append(" rs=").append(config.disableReason); 2833 } 2834 if (config.lastConnected != 0) { 2835 now = System.currentTimeMillis(); 2836 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2837 } 2838 if (mLastBssid != null) { 2839 sb.append(" lastbssid=").append(mLastBssid); 2840 } 2841 if (mWifiInfo.getFrequency() != -1) { 2842 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2843 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2844 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2845 } 2846 } 2847 break; 2848 case CMD_RSSI_POLL: 2849 case CMD_UNWANTED_NETWORK: 2850 case WifiManager.RSSI_PKTCNT_FETCH: 2851 sb.append(" "); 2852 sb.append(Integer.toString(msg.arg1)); 2853 sb.append(" "); 2854 sb.append(Integer.toString(msg.arg2)); 2855 if (mWifiInfo.getSSID() != null) 2856 if (mWifiInfo.getSSID() != null) 2857 sb.append(" ").append(mWifiInfo.getSSID()); 2858 if (mWifiInfo.getBSSID() != null) 2859 sb.append(" ").append(mWifiInfo.getBSSID()); 2860 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2861 sb.append(" f=").append(mWifiInfo.getFrequency()); 2862 sb.append(" sc=").append(mWifiInfo.score); 2863 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2864 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2865 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2866 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2867 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2868 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2869 report = reportOnTime(); 2870 if (report != null) { 2871 sb.append(" ").append(report); 2872 } 2873 if (wifiScoringReport != null) { 2874 sb.append(wifiScoringReport); 2875 } 2876 if (mConnectedModeGScanOffloadStarted) { 2877 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2878 } else { 2879 sb.append(" offload-stopped"); 2880 } 2881 break; 2882 case CMD_AUTO_CONNECT: 2883 case WifiManager.CONNECT_NETWORK: 2884 sb.append(" "); 2885 sb.append(Integer.toString(msg.arg1)); 2886 sb.append(" "); 2887 sb.append(Integer.toString(msg.arg2)); 2888 config = (WifiConfiguration) msg.obj; 2889 if (config != null) { 2890 sb.append(" ").append(config.configKey()); 2891 if (config.visibility != null) { 2892 sb.append(" ").append(config.visibility.toString()); 2893 } 2894 } 2895 if (mTargetRoamBSSID != null) { 2896 sb.append(" ").append(mTargetRoamBSSID); 2897 } 2898 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2899 config = getCurrentWifiConfiguration(); 2900 if (config != null) { 2901 sb.append(config.configKey()); 2902 if (config.visibility != null) { 2903 sb.append(" ").append(config.visibility.toString()); 2904 } 2905 } 2906 break; 2907 case CMD_AUTO_ROAM: 2908 sb.append(" "); 2909 sb.append(Integer.toString(msg.arg1)); 2910 sb.append(" "); 2911 sb.append(Integer.toString(msg.arg2)); 2912 ScanResult result = (ScanResult) msg.obj; 2913 if (result != null) { 2914 now = System.currentTimeMillis(); 2915 sb.append(" bssid=").append(result.BSSID); 2916 sb.append(" rssi=").append(result.level); 2917 sb.append(" freq=").append(result.frequency); 2918 if (result.seen > 0 && result.seen < now) { 2919 sb.append(" seen=").append(now - result.seen); 2920 } else { 2921 // Somehow the timestamp for this scan result is inconsistent 2922 sb.append(" !seen=").append(result.seen); 2923 } 2924 } 2925 if (mTargetRoamBSSID != null) { 2926 sb.append(" ").append(mTargetRoamBSSID); 2927 } 2928 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2929 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2930 break; 2931 case CMD_ADD_OR_UPDATE_NETWORK: 2932 sb.append(" "); 2933 sb.append(Integer.toString(msg.arg1)); 2934 sb.append(" "); 2935 sb.append(Integer.toString(msg.arg2)); 2936 if (msg.obj != null) { 2937 config = (WifiConfiguration) msg.obj; 2938 sb.append(" ").append(config.configKey()); 2939 sb.append(" prio=").append(config.priority); 2940 sb.append(" status=").append(config.status); 2941 if (config.BSSID != null) { 2942 sb.append(" ").append(config.BSSID); 2943 } 2944 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2945 if (curConfig != null) { 2946 if (curConfig.configKey().equals(config.configKey())) { 2947 sb.append(" is current"); 2948 } else { 2949 sb.append(" current=").append(curConfig.configKey()); 2950 sb.append(" prio=").append(curConfig.priority); 2951 sb.append(" status=").append(curConfig.status); 2952 } 2953 } 2954 } 2955 break; 2956 case WifiManager.DISABLE_NETWORK: 2957 case CMD_ENABLE_NETWORK: 2958 sb.append(" "); 2959 sb.append(Integer.toString(msg.arg1)); 2960 sb.append(" "); 2961 sb.append(Integer.toString(msg.arg2)); 2962 key = mWifiConfigStore.getLastSelectedConfiguration(); 2963 if (key != null) { 2964 sb.append(" last=").append(key); 2965 } 2966 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2967 if (config != null && (key == null || !config.configKey().equals(key))) { 2968 sb.append(" target=").append(key); 2969 } 2970 break; 2971 case CMD_GET_CONFIGURED_NETWORKS: 2972 sb.append(" "); 2973 sb.append(Integer.toString(msg.arg1)); 2974 sb.append(" "); 2975 sb.append(Integer.toString(msg.arg2)); 2976 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2977 break; 2978 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2979 sb.append(" "); 2980 sb.append(Integer.toString(msg.arg1)); 2981 sb.append(" "); 2982 sb.append(Integer.toString(msg.arg2)); 2983 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2984 sb.append(",").append(mWifiInfo.txBad); 2985 sb.append(",").append(mWifiInfo.txRetries); 2986 break; 2987 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2988 sb.append(" "); 2989 sb.append(Integer.toString(msg.arg1)); 2990 sb.append(" "); 2991 sb.append(Integer.toString(msg.arg2)); 2992 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2993 sb.append(" OK "); 2994 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2995 sb.append(" FAIL "); 2996 } 2997 if (mLinkProperties != null) { 2998 if (mLinkProperties.hasIPv4Address()) { 2999 sb.append(" v4"); 3000 } 3001 if (mLinkProperties.hasGlobalIPv6Address()) { 3002 sb.append(" v6"); 3003 } 3004 if (mLinkProperties.hasIPv4DefaultRoute()) { 3005 sb.append(" v4r"); 3006 } 3007 if (mLinkProperties.hasIPv6DefaultRoute()) { 3008 sb.append(" v6r"); 3009 } 3010 if (mLinkProperties.hasIPv4DnsServer()) { 3011 sb.append(" v4dns"); 3012 } 3013 if (mLinkProperties.hasIPv6DnsServer()) { 3014 sb.append(" v6dns"); 3015 } 3016 } 3017 break; 3018 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3019 sb.append(" "); 3020 sb.append(Integer.toString(msg.arg1)); 3021 sb.append(" "); 3022 sb.append(Integer.toString(msg.arg2)); 3023 if (msg.obj != null) { 3024 NetworkInfo info = (NetworkInfo) msg.obj; 3025 NetworkInfo.State state = info.getState(); 3026 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3027 if (state != null) { 3028 sb.append(" st=").append(state); 3029 } 3030 if (detailedState != null) { 3031 sb.append("/").append(detailedState); 3032 } 3033 } 3034 break; 3035 case CMD_IP_CONFIGURATION_LOST: 3036 int count = -1; 3037 WifiConfiguration c = getCurrentWifiConfiguration(); 3038 if (c != null) count = c.numIpConfigFailures; 3039 sb.append(" "); 3040 sb.append(Integer.toString(msg.arg1)); 3041 sb.append(" "); 3042 sb.append(Integer.toString(msg.arg2)); 3043 sb.append(" failures: "); 3044 sb.append(Integer.toString(count)); 3045 sb.append("/"); 3046 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3047 if (mWifiInfo.getBSSID() != null) { 3048 sb.append(" ").append(mWifiInfo.getBSSID()); 3049 } 3050 if (c != null) { 3051 ScanDetailCache scanDetailCache = 3052 mWifiConfigStore.getScanDetailCache(c); 3053 if (scanDetailCache != null) { 3054 for (ScanDetail sd : scanDetailCache.values()) { 3055 ScanResult r = sd.getScanResult(); 3056 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3057 sb.append(" ipfail=").append(r.numIpConfigFailures); 3058 sb.append(",st=").append(r.autoJoinStatus); 3059 } 3060 } 3061 } 3062 sb.append(" -> ajst=").append(c.autoJoinStatus); 3063 sb.append(" ").append(c.disableReason); 3064 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3065 sb.append(",").append(mWifiInfo.txBad); 3066 sb.append(",").append(mWifiInfo.txRetries); 3067 } 3068 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3069 break; 3070 case CMD_UPDATE_LINKPROPERTIES: 3071 sb.append(" "); 3072 sb.append(Integer.toString(msg.arg1)); 3073 sb.append(" "); 3074 sb.append(Integer.toString(msg.arg2)); 3075 if (mLinkProperties != null) { 3076 if (mLinkProperties.hasIPv4Address()) { 3077 sb.append(" v4"); 3078 } 3079 if (mLinkProperties.hasGlobalIPv6Address()) { 3080 sb.append(" v6"); 3081 } 3082 if (mLinkProperties.hasIPv4DefaultRoute()) { 3083 sb.append(" v4r"); 3084 } 3085 if (mLinkProperties.hasIPv6DefaultRoute()) { 3086 sb.append(" v6r"); 3087 } 3088 if (mLinkProperties.hasIPv4DnsServer()) { 3089 sb.append(" v4dns"); 3090 } 3091 if (mLinkProperties.hasIPv6DnsServer()) { 3092 sb.append(" v6dns"); 3093 } 3094 } 3095 break; 3096 case CMD_IP_REACHABILITY_LOST: 3097 if (msg.obj != null) { 3098 sb.append(" ").append((String) msg.obj); 3099 } 3100 break; 3101 case CMD_SET_COUNTRY_CODE: 3102 sb.append(" "); 3103 sb.append(Integer.toString(msg.arg1)); 3104 sb.append(" "); 3105 sb.append(Integer.toString(msg.arg2)); 3106 if (msg.obj != null) { 3107 sb.append(" ").append((String) msg.obj); 3108 } 3109 break; 3110 case CMD_ROAM_WATCHDOG_TIMER: 3111 sb.append(" "); 3112 sb.append(Integer.toString(msg.arg1)); 3113 sb.append(" "); 3114 sb.append(Integer.toString(msg.arg2)); 3115 sb.append(" cur=").append(roamWatchdogCount); 3116 break; 3117 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3118 sb.append(" "); 3119 sb.append(Integer.toString(msg.arg1)); 3120 sb.append(" "); 3121 sb.append(Integer.toString(msg.arg2)); 3122 sb.append(" cur=").append(disconnectingWatchdogCount); 3123 break; 3124 default: 3125 sb.append(" "); 3126 sb.append(Integer.toString(msg.arg1)); 3127 sb.append(" "); 3128 sb.append(Integer.toString(msg.arg2)); 3129 break; 3130 } 3131 3132 return sb.toString(); 3133 } 3134 3135 private void stopPnoOffload() { 3136 3137 // clear the PNO list 3138 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3139 Log.e(TAG, "Failed to stop pno"); 3140 } 3141 3142 } 3143 3144 3145 private boolean configureSsidWhiteList() { 3146 3147 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3148 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3149 return true; 3150 } 3151 3152 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3153 loge("configureSsidWhiteList couldnt program SSID list, size " 3154 + mWhiteListedSsids.length); 3155 return false; 3156 } 3157 3158 loge("configureSsidWhiteList success"); 3159 return true; 3160 } 3161 3162 // In associated more, lazy roam will be looking for 5GHz roam candidate 3163 private boolean configureLazyRoam() { 3164 boolean status; 3165 if (!useHalBasedAutoJoinOffload()) return false; 3166 3167 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3168 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3169 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3170 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3171 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3172 params.A_band_max_boost = 65; 3173 params.lazy_roam_hysteresis = 25; 3174 params.alert_roam_rssi_trigger = -75; 3175 3176 if (DBG) { 3177 Log.e(TAG, "configureLazyRoam " + params.toString()); 3178 } 3179 3180 if (!WifiNative.setLazyRoam(true, params)) { 3181 3182 Log.e(TAG, "configureLazyRoam couldnt program params"); 3183 3184 return false; 3185 } 3186 if (DBG) { 3187 Log.e(TAG, "configureLazyRoam success"); 3188 } 3189 return true; 3190 } 3191 3192 // In associated more, lazy roam will be looking for 5GHz roam candidate 3193 private boolean stopLazyRoam() { 3194 boolean status; 3195 if (!useHalBasedAutoJoinOffload()) return false; 3196 if (DBG) { 3197 Log.e(TAG, "stopLazyRoam"); 3198 } 3199 return WifiNative.setLazyRoam(false, null); 3200 } 3201 3202 private boolean startGScanConnectedModeOffload(String reason) { 3203 if (DBG) { 3204 if (reason == null) { 3205 reason = ""; 3206 } 3207 loge("startGScanConnectedModeOffload " + reason); 3208 } 3209 stopGScan("startGScanConnectedModeOffload " + reason); 3210 if (!mScreenOn) return false; 3211 3212 if (USE_PAUSE_SCANS) { 3213 mWifiNative.pauseScan(); 3214 } 3215 mPnoEnabled = configurePno(); 3216 if (mPnoEnabled == false) { 3217 if (USE_PAUSE_SCANS) { 3218 mWifiNative.restartScan(); 3219 } 3220 return false; 3221 } 3222 mLazyRoamEnabled = configureLazyRoam(); 3223 if (mLazyRoamEnabled == false) { 3224 if (USE_PAUSE_SCANS) { 3225 mWifiNative.restartScan(); 3226 } 3227 return false; 3228 } 3229 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3230 configureSsidWhiteList(); 3231 } 3232 if (!startConnectedGScan(reason)) { 3233 if (USE_PAUSE_SCANS) { 3234 mWifiNative.restartScan(); 3235 } 3236 return false; 3237 } 3238 if (USE_PAUSE_SCANS) { 3239 mWifiNative.restartScan(); 3240 } 3241 mConnectedModeGScanOffloadStarted = true; 3242 if (DBG) { 3243 loge("startGScanConnectedModeOffload success"); 3244 } 3245 return true; 3246 } 3247 3248 private boolean startGScanDisconnectedModeOffload(String reason) { 3249 if (DBG) { 3250 loge("startGScanDisconnectedModeOffload " + reason); 3251 } 3252 stopGScan("startGScanDisconnectedModeOffload " + reason); 3253 if (USE_PAUSE_SCANS) { 3254 mWifiNative.pauseScan(); 3255 } 3256 mPnoEnabled = configurePno(); 3257 if (mPnoEnabled == false) { 3258 if (USE_PAUSE_SCANS) { 3259 mWifiNative.restartScan(); 3260 } 3261 return false; 3262 } 3263 if (!startDisconnectedGScan(reason)) { 3264 if (USE_PAUSE_SCANS) { 3265 mWifiNative.restartScan(); 3266 } 3267 return false; 3268 } 3269 if (USE_PAUSE_SCANS) { 3270 mWifiNative.restartScan(); 3271 } 3272 return true; 3273 } 3274 3275 private boolean configurePno() { 3276 if (!useHalBasedAutoJoinOffload()) return false; 3277 3278 if (mWifiScanner == null) { 3279 log("configurePno: mWifiScanner is null "); 3280 return true; 3281 } 3282 3283 List<WifiNative.WifiPnoNetwork> llist 3284 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3285 if (llist == null || llist.size() == 0) { 3286 stopPnoOffload(); 3287 log("configurePno: empty PNO list "); 3288 return true; 3289 } 3290 if (DBG) { 3291 log("configurePno: got llist size " + llist.size()); 3292 } 3293 3294 // first program the network we want to look for thru the pno API 3295 WifiNative.WifiPnoNetwork list[] 3296 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3297 3298 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3299 Log.e(TAG, "Failed to set pno, length = " + list.length); 3300 return false; 3301 } 3302 3303 if (true) { 3304 StringBuilder sb = new StringBuilder(); 3305 for (WifiNative.WifiPnoNetwork network : list) { 3306 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3307 sb.append(" flags="); 3308 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3309 sb.append("] "); 3310 3311 } 3312 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3313 } 3314 return true; 3315 } 3316 3317 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3318 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3319 3320 private boolean startConnectedGScan(String reason) { 3321 // send a scan background request so as to kick firmware 3322 // 5GHz roaming and autojoin 3323 // We do this only if screen is on 3324 WifiScanner.ScanSettings settings; 3325 3326 if (mPnoEnabled || mLazyRoamEnabled) { 3327 settings = new WifiScanner.ScanSettings(); 3328 settings.band = WifiScanner.WIFI_BAND_BOTH; 3329 long now = System.currentTimeMillis(); 3330 3331 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3332 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3333 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3334 } else { 3335 mGScanStartTimeMilli = now; 3336 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3337 // if we start offload with short interval, then reconfigure it after a given 3338 // duration of time so as to reduce the scan frequency 3339 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3340 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3341 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3342 (long)delay); 3343 mRestartAutoJoinOffloadCounter++; 3344 } 3345 mGScanPeriodMilli = settings.periodInMs; 3346 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3347 if (DBG) { 3348 log("startConnectedScan: settings band="+ settings.band 3349 + " period=" + settings.periodInMs); 3350 } 3351 3352 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3353 if (true) { 3354 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3355 } 3356 } 3357 return true; 3358 } 3359 3360 private boolean startDisconnectedGScan(String reason) { 3361 // send a scan background request so as to kick firmware 3362 // PNO 3363 // This is done in both screen On and screen Off modes 3364 WifiScanner.ScanSettings settings; 3365 3366 if (mWifiScanner == null) { 3367 log("startDisconnectedGScan: no wifi scanner"); 3368 return false; 3369 } 3370 3371 if (mPnoEnabled || mLazyRoamEnabled) { 3372 settings = new WifiScanner.ScanSettings(); 3373 settings.band = WifiScanner.WIFI_BAND_BOTH; 3374 long now = System.currentTimeMillis(); 3375 3376 3377 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3378 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3379 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3380 } else { 3381 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3382 mGScanStartTimeMilli = now; 3383 // if we start offload with short interval, then reconfigure it after a given 3384 // duration of time so as to reduce the scan frequency 3385 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3386 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3387 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3388 (long)delay); 3389 mRestartAutoJoinOffloadCounter++; 3390 } 3391 mGScanPeriodMilli = settings.periodInMs; 3392 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3393 if (DBG) { 3394 log("startDisconnectedScan: settings band="+ settings.band 3395 + " period=" + settings.periodInMs); 3396 } 3397 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3398 if (true) { 3399 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3400 } 3401 } 3402 return true; 3403 } 3404 3405 private boolean stopGScan(String reason) { 3406 mGScanStartTimeMilli = 0; 3407 mGScanPeriodMilli = 0; 3408 if (mWifiScanner != null) { 3409 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3410 } 3411 mConnectedModeGScanOffloadStarted = false; 3412 if (true) { 3413 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3414 } 3415 return true; 3416 } 3417 3418 private void handleScreenStateChanged(boolean screenOn) { 3419 mScreenOn = screenOn; 3420 if (PDBG) { 3421 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3422 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3423 + " state " + getCurrentState().getName() 3424 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3425 } 3426 enableRssiPolling(screenOn); 3427 if (screenOn) enableAllNetworks(); 3428 if (mUserWantsSuspendOpt.get()) { 3429 if (screenOn) { 3430 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3431 } else { 3432 // Allow 2s for suspend optimizations to be set 3433 mSuspendWakeLock.acquire(2000); 3434 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3435 } 3436 } 3437 mScreenBroadcastReceived.set(true); 3438 3439 getWifiLinkLayerStats(false); 3440 mOnTimeScreenStateChange = mOnTime; 3441 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3442 3443 cancelDelayedScan(); 3444 3445 if (screenOn) { 3446 enableBackgroundScan(false); 3447 setScanAlarm(false); 3448 clearBlacklist(); 3449 3450 fullBandConnectedTimeIntervalMilli 3451 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3452 // In either Disconnectedstate or ConnectedState, 3453 // start the scan alarm so as to enable autojoin 3454 if (getCurrentState() == mConnectedState 3455 && allowFullBandScanAndAssociated()) { 3456 if (useHalBasedAutoJoinOffload()) { 3457 startGScanConnectedModeOffload("screenOnConnected"); 3458 } else { 3459 // Scan after 500ms 3460 startDelayedScan(500, null, null); 3461 } 3462 } else if (getCurrentState() == mDisconnectedState) { 3463 if (useHalBasedAutoJoinOffload()) { 3464 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3465 } else { 3466 // Scan after 500ms 3467 startDelayedScan(500, null, null); 3468 } 3469 } 3470 } else { 3471 if (getCurrentState() == mDisconnectedState) { 3472 // Screen Off and Disconnected and chipset doesn't support scan offload 3473 // => start scan alarm 3474 // Screen Off and Disconnected and chipset does support scan offload 3475 // => will use scan offload (i.e. background scan) 3476 if (useHalBasedAutoJoinOffload()) { 3477 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3478 } else { 3479 if (!mBackgroundScanSupported) { 3480 setScanAlarm(true); 3481 } else { 3482 if (!mIsScanOngoing) { 3483 enableBackgroundScan(true); 3484 } 3485 } 3486 } 3487 } else { 3488 enableBackgroundScan(false); 3489 if (useHalBasedAutoJoinOffload()) { 3490 // don't try stop Gscan if it is not enabled 3491 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3492 } 3493 } 3494 } 3495 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3496 3497 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3498 } 3499 3500 private void checkAndSetConnectivityInstance() { 3501 if (mCm == null) { 3502 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3503 } 3504 } 3505 3506 private boolean startTethering(ArrayList<String> available) { 3507 3508 boolean wifiAvailable = false; 3509 3510 checkAndSetConnectivityInstance(); 3511 3512 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3513 3514 for (String intf : available) { 3515 for (String regex : wifiRegexs) { 3516 if (intf.matches(regex)) { 3517 3518 InterfaceConfiguration ifcg = null; 3519 try { 3520 ifcg = mNwService.getInterfaceConfig(intf); 3521 if (ifcg != null) { 3522 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3523 ifcg.setLinkAddress(new LinkAddress( 3524 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3525 ifcg.setInterfaceUp(); 3526 3527 mNwService.setInterfaceConfig(intf, ifcg); 3528 } 3529 } catch (Exception e) { 3530 loge("Error configuring interface " + intf + ", :" + e); 3531 return false; 3532 } 3533 3534 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3535 loge("Error tethering on " + intf); 3536 return false; 3537 } 3538 mTetherInterfaceName = intf; 3539 return true; 3540 } 3541 } 3542 } 3543 // We found no interfaces to tether 3544 return false; 3545 } 3546 3547 private void stopTethering() { 3548 3549 checkAndSetConnectivityInstance(); 3550 3551 /* Clear the interface config to allow dhcp correctly configure new 3552 ip settings */ 3553 InterfaceConfiguration ifcg = null; 3554 try { 3555 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3556 if (ifcg != null) { 3557 ifcg.setLinkAddress( 3558 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3559 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3560 } 3561 } catch (Exception e) { 3562 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3563 } 3564 3565 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3566 loge("Untether initiate failed!"); 3567 } 3568 } 3569 3570 private boolean isWifiTethered(ArrayList<String> active) { 3571 3572 checkAndSetConnectivityInstance(); 3573 3574 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3575 for (String intf : active) { 3576 for (String regex : wifiRegexs) { 3577 if (intf.matches(regex)) { 3578 return true; 3579 } 3580 } 3581 } 3582 // We found no interfaces that are tethered 3583 return false; 3584 } 3585 3586 /** 3587 * Set the country code from the system setting value, if any. 3588 */ 3589 private void setCountryCode() { 3590 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3591 Settings.Global.WIFI_COUNTRY_CODE); 3592 if (countryCode != null && !countryCode.isEmpty()) { 3593 setCountryCode(countryCode, false); 3594 } else { 3595 //use driver default 3596 } 3597 } 3598 3599 /** 3600 * Set the frequency band from the system setting value, if any. 3601 */ 3602 private void setFrequencyBand() { 3603 int band = Settings.Global.getInt(mContext.getContentResolver(), 3604 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3605 setFrequencyBand(band, false); 3606 } 3607 3608 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3609 if (DBG) { 3610 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3611 + " -want " + mUserWantsSuspendOpt.get() 3612 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3613 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3614 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3615 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3616 } 3617 //mWifiNative.setSuspendOptimizations(enabled); 3618 3619 if (enabled) { 3620 mSuspendOptNeedsDisabled &= ~reason; 3621 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3622 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3623 if (DBG) { 3624 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3625 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3626 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3627 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3628 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3629 } 3630 mWifiNative.setSuspendOptimizations(true); 3631 } 3632 } else { 3633 mSuspendOptNeedsDisabled |= reason; 3634 mWifiNative.setSuspendOptimizations(false); 3635 } 3636 } 3637 3638 private void setSuspendOptimizations(int reason, boolean enabled) { 3639 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3640 if (enabled) { 3641 mSuspendOptNeedsDisabled &= ~reason; 3642 } else { 3643 mSuspendOptNeedsDisabled |= reason; 3644 } 3645 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3646 } 3647 3648 private void setWifiState(int wifiState) { 3649 final int previousWifiState = mWifiState.get(); 3650 3651 try { 3652 if (wifiState == WIFI_STATE_ENABLED) { 3653 mBatteryStats.noteWifiOn(); 3654 } else if (wifiState == WIFI_STATE_DISABLED) { 3655 mBatteryStats.noteWifiOff(); 3656 } 3657 } catch (RemoteException e) { 3658 loge("Failed to note battery stats in wifi"); 3659 } 3660 3661 mWifiState.set(wifiState); 3662 3663 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3664 3665 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3666 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3667 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3668 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3669 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3670 } 3671 3672 private void setWifiApState(int wifiApState, int reason) { 3673 final int previousWifiApState = mWifiApState.get(); 3674 3675 try { 3676 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3677 mBatteryStats.noteWifiOn(); 3678 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3679 mBatteryStats.noteWifiOff(); 3680 } 3681 } catch (RemoteException e) { 3682 loge("Failed to note battery stats in wifi"); 3683 } 3684 3685 // Update state 3686 mWifiApState.set(wifiApState); 3687 3688 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3689 3690 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3691 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3692 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3693 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3694 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3695 //only set reason number when softAP start failed 3696 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3697 } 3698 3699 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3700 } 3701 3702 /* 3703 void ageOutScanResults(int age) { 3704 synchronized(mScanResultCache) { 3705 // Trim mScanResults, which prevent WifiStateMachine to return 3706 // obsolete scan results to queriers 3707 long now = System.CurrentTimeMillis(); 3708 for (int i = 0; i < mScanResults.size(); i++) { 3709 ScanResult result = mScanResults.get(i); 3710 if ((result.seen > now || (now - result.seen) > age)) { 3711 mScanResults.remove(i); 3712 } 3713 } 3714 } 3715 }*/ 3716 3717 private static final String IE_STR = "ie="; 3718 private static final String ID_STR = "id="; 3719 private static final String BSSID_STR = "bssid="; 3720 private static final String FREQ_STR = "freq="; 3721 private static final String LEVEL_STR = "level="; 3722 private static final String TSF_STR = "tsf="; 3723 private static final String FLAGS_STR = "flags="; 3724 private static final String SSID_STR = "ssid="; 3725 private static final String DELIMITER_STR = "===="; 3726 private static final String END_STR = "####"; 3727 3728 int emptyScanResultCount = 0; 3729 3730 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3731 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3732 3733 /** 3734 * Format: 3735 * <p/> 3736 * id=1 3737 * bssid=68:7f:76:d7:1a:6e 3738 * freq=2412 3739 * level=-44 3740 * tsf=1344626243700342 3741 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3742 * ssid=zfdy 3743 * ==== 3744 * id=2 3745 * bssid=68:5f:74:d7:1a:6f 3746 * freq=5180 3747 * level=-73 3748 * tsf=1344626243700373 3749 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3750 * ssid=zuby 3751 * ==== 3752 */ 3753 private void setScanResults() { 3754 mNumScanResultsKnown = 0; 3755 mNumScanResultsReturned = 0; 3756 String bssid = ""; 3757 int level = 0; 3758 int freq = 0; 3759 long tsf = 0; 3760 String flags = ""; 3761 WifiSsid wifiSsid = null; 3762 String scanResults; 3763 String tmpResults; 3764 StringBuffer scanResultsBuf = new StringBuffer(); 3765 int sid = 0; 3766 3767 while (true) { 3768 tmpResults = mWifiNative.scanResults(sid); 3769 if (TextUtils.isEmpty(tmpResults)) break; 3770 scanResultsBuf.append(tmpResults); 3771 scanResultsBuf.append("\n"); 3772 String[] lines = tmpResults.split("\n"); 3773 sid = -1; 3774 for (int i = lines.length - 1; i >= 0; i--) { 3775 if (lines[i].startsWith(END_STR)) { 3776 break; 3777 } else if (lines[i].startsWith(ID_STR)) { 3778 try { 3779 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3780 } catch (NumberFormatException e) { 3781 // Nothing to do 3782 } 3783 break; 3784 } 3785 } 3786 if (sid == -1) break; 3787 } 3788 3789 // Age out scan results, we return all scan results found in the last 12 seconds, 3790 // and NOT all scan results since last scan. 3791 // ageOutScanResults(12000); 3792 3793 scanResults = scanResultsBuf.toString(); 3794 if (TextUtils.isEmpty(scanResults)) { 3795 emptyScanResultCount++; 3796 if (emptyScanResultCount > 10) { 3797 // If we got too many empty scan results, the current scan cache is stale, 3798 // hence clear it. 3799 mScanResults = new ArrayList<>(); 3800 } 3801 return; 3802 } 3803 3804 emptyScanResultCount = 0; 3805 3806 mWifiConfigStore.trimANQPCache(false); 3807 3808 // note that all these splits and substrings keep references to the original 3809 // huge string buffer while the amount we really want is generally pretty small 3810 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3811 synchronized (mScanResultCache) { 3812 mScanResults = new ArrayList<>(); 3813 String[] lines = scanResults.split("\n"); 3814 final int bssidStrLen = BSSID_STR.length(); 3815 final int flagLen = FLAGS_STR.length(); 3816 String infoElements = null; 3817 List<String> anqpLines = null; 3818 3819 for (String line : lines) { 3820 if (line.startsWith(BSSID_STR)) { 3821 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3822 } else if (line.startsWith(FREQ_STR)) { 3823 try { 3824 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3825 } catch (NumberFormatException e) { 3826 freq = 0; 3827 } 3828 } else if (line.startsWith(LEVEL_STR)) { 3829 try { 3830 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3831 /* some implementations avoid negative values by adding 256 3832 * so we need to adjust for that here. 3833 */ 3834 if (level > 0) level -= 256; 3835 } catch (NumberFormatException e) { 3836 level = 0; 3837 } 3838 } else if (line.startsWith(TSF_STR)) { 3839 try { 3840 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3841 } catch (NumberFormatException e) { 3842 tsf = 0; 3843 } 3844 } else if (line.startsWith(FLAGS_STR)) { 3845 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3846 } else if (line.startsWith(SSID_STR)) { 3847 wifiSsid = WifiSsid.createFromAsciiEncoded( 3848 line.substring(SSID_STR.length())); 3849 } else if (line.startsWith(IE_STR)) { 3850 infoElements = line; 3851 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3852 if (anqpLines == null) { 3853 anqpLines = new ArrayList<>(); 3854 } 3855 anqpLines.add(line); 3856 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3857 if (bssid != null) { 3858 try { 3859 NetworkDetail networkDetail = 3860 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3861 3862 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3863 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3864 Log.d(Utils.hs2LogTag(getClass()), 3865 String.format("Inconsistent SSID on BSSID '%s':" + 3866 " '%s' vs '%s': %s", 3867 bssid, xssid, networkDetail.getSSID(), infoElements)); 3868 } 3869 3870 if (networkDetail.hasInterworking()) { 3871 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3872 } 3873 3874 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3875 if (scanDetail != null) { 3876 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3877 flags, freq, tsf); 3878 } else { 3879 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3880 flags, level, freq, tsf); 3881 mScanResultCache.put(networkDetail, scanDetail); 3882 } 3883 3884 mNumScanResultsReturned++; // Keep track of how many scan results we got 3885 // as part of this scan's processing 3886 mScanResults.add(scanDetail); 3887 } catch (IllegalArgumentException iae) { 3888 Log.d(TAG, "Failed to parse information elements: " + iae); 3889 } 3890 } 3891 bssid = null; 3892 level = 0; 3893 freq = 0; 3894 tsf = 0; 3895 flags = ""; 3896 wifiSsid = null; 3897 infoElements = null; 3898 anqpLines = null; 3899 } 3900 } 3901 } 3902 3903 boolean attemptAutoJoin = true; 3904 SupplicantState state = mWifiInfo.getSupplicantState(); 3905 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3906 if (getCurrentState() == mRoamingState 3907 || getCurrentState() == mObtainingIpState 3908 || getCurrentState() == mScanModeState 3909 || getCurrentState() == mDisconnectingState 3910 || (getCurrentState() == mConnectedState 3911 && !getEnableAutoJoinWhenAssociated()) 3912 || linkDebouncing 3913 || state == SupplicantState.ASSOCIATING 3914 || state == SupplicantState.AUTHENTICATING 3915 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3916 || state == SupplicantState.GROUP_HANDSHAKE 3917 || (/* keep autojoin enabled if user has manually selected a wifi network, 3918 so as to make sure we reliably remain connected to this network */ 3919 mConnectionRequests == 0 && selection == null)) { 3920 // Dont attempt auto-joining again while we are already attempting to join 3921 // and/or obtaining Ip address 3922 attemptAutoJoin = false; 3923 } 3924 if (DBG) { 3925 if (selection == null) { 3926 selection = "<none>"; 3927 } 3928 loge("wifi setScanResults state" + getCurrentState() 3929 + " sup_state=" + state 3930 + " debouncing=" + linkDebouncing 3931 + " mConnectionRequests=" + mConnectionRequests 3932 + " selection=" + selection 3933 + " mNumScanResultsReturned " + mNumScanResultsReturned 3934 + " mScanResults " + mScanResults.size()); 3935 } 3936 if (attemptAutoJoin) { 3937 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3938 } 3939 // Loose last selected configuration if we have been disconnected for 5 minutes 3940 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3941 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3942 } 3943 3944 if (attemptAutoJoin) { 3945 synchronized (mScanResultCache) { 3946 // AutoJoincontroller will directly acces the scan result list and update it with 3947 // ScanResult status 3948 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3949 } 3950 } 3951 if (linkDebouncing) { 3952 // If debouncing, we dont re-select a SSID or BSSID hence 3953 // there is no need to call the network selection code 3954 // in WifiAutoJoinController, instead, 3955 // just try to reconnect to the same SSID by triggering a roam 3956 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3957 } 3958 } 3959 3960 /* 3961 * Fetch RSSI, linkspeed, and frequency on current connection 3962 */ 3963 private void fetchRssiLinkSpeedAndFrequencyNative() { 3964 int newRssi = -1; 3965 int newLinkSpeed = -1; 3966 int newFrequency = -1; 3967 3968 String signalPoll = mWifiNative.signalPoll(); 3969 3970 if (signalPoll != null) { 3971 String[] lines = signalPoll.split("\n"); 3972 for (String line : lines) { 3973 String[] prop = line.split("="); 3974 if (prop.length < 2) continue; 3975 try { 3976 if (prop[0].equals("RSSI")) { 3977 newRssi = Integer.parseInt(prop[1]); 3978 } else if (prop[0].equals("LINKSPEED")) { 3979 newLinkSpeed = Integer.parseInt(prop[1]); 3980 } else if (prop[0].equals("FREQUENCY")) { 3981 newFrequency = Integer.parseInt(prop[1]); 3982 } 3983 } catch (NumberFormatException e) { 3984 //Ignore, defaults on rssi and linkspeed are assigned 3985 } 3986 } 3987 } 3988 3989 if (PDBG) { 3990 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3991 + Integer.toString(newRssi) + " linkspeed=" 3992 + Integer.toString(newLinkSpeed)); 3993 } 3994 3995 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3996 // screen out invalid values 3997 /* some implementations avoid negative values by adding 256 3998 * so we need to adjust for that here. 3999 */ 4000 if (newRssi > 0) newRssi -= 256; 4001 mWifiInfo.setRssi(newRssi); 4002 /* 4003 * Rather then sending the raw RSSI out every time it 4004 * changes, we precalculate the signal level that would 4005 * be displayed in the status bar, and only send the 4006 * broadcast if that much more coarse-grained number 4007 * changes. This cuts down greatly on the number of 4008 * broadcasts, at the cost of not informing others 4009 * interested in RSSI of all the changes in signal 4010 * level. 4011 */ 4012 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4013 if (newSignalLevel != mLastSignalLevel) { 4014 sendRssiChangeBroadcast(newRssi); 4015 } 4016 mLastSignalLevel = newSignalLevel; 4017 } else { 4018 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4019 } 4020 4021 if (newLinkSpeed != -1) { 4022 mWifiInfo.setLinkSpeed(newLinkSpeed); 4023 } 4024 if (newFrequency > 0) { 4025 if (ScanResult.is5GHz(newFrequency)) { 4026 mWifiConnectionStatistics.num5GhzConnected++; 4027 } 4028 if (ScanResult.is24GHz(newFrequency)) { 4029 mWifiConnectionStatistics.num24GhzConnected++; 4030 } 4031 mWifiInfo.setFrequency(newFrequency); 4032 } 4033 mWifiConfigStore.updateConfiguration(mWifiInfo); 4034 } 4035 4036 /** 4037 * Determine if we need to switch network: 4038 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4039 * - match the uregncy of the switch versus the packet usage at the interface 4040 */ 4041 boolean shouldSwitchNetwork(int networkDelta) { 4042 int delta; 4043 if (networkDelta <= 0) { 4044 return false; 4045 } 4046 delta = networkDelta; 4047 if (mWifiInfo != null) { 4048 if (!getEnableAutoJoinWhenAssociated() 4049 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4050 // If AutoJoin while associated is not enabled, 4051 // we should never switch network when already associated 4052 delta = -1000; 4053 } else { 4054 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4055 // TODO: at the interface. We should also discriminate between ucast and mcast, 4056 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4057 // TODO: broadcasts 4058 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4059 delta -= 999; 4060 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4061 delta -= 6; 4062 } 4063 loge("WifiStateMachine shouldSwitchNetwork " 4064 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4065 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4066 + " delta " + networkDelta + " -> " + delta); 4067 } 4068 } else { 4069 loge("WifiStateMachine shouldSwitchNetwork " 4070 + " delta " + networkDelta + " -> " + delta); 4071 } 4072 if (delta > 0) { 4073 return true; 4074 } 4075 return false; 4076 } 4077 4078 // Polling has completed, hence we wont have a score anymore 4079 private void cleanWifiScore() { 4080 mWifiInfo.txBadRate = 0; 4081 mWifiInfo.txSuccessRate = 0; 4082 mWifiInfo.txRetriesRate = 0; 4083 mWifiInfo.rxSuccessRate = 0; 4084 } 4085 4086 int mBadLinkspeedcount = 0; 4087 4088 // For debug, provide information about the last scoring operation 4089 String wifiScoringReport = null; 4090 4091 private void calculateWifiScore(WifiLinkLayerStats stats) { 4092 StringBuilder sb = new StringBuilder(); 4093 4094 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4095 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4096 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4097 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4098 < mWifiConfigStore.badLinkSpeed5); 4099 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4100 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4101 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4102 >= mWifiConfigStore.goodLinkSpeed5); 4103 4104 if (isBadLinkspeed) { 4105 if (mBadLinkspeedcount < 6) 4106 mBadLinkspeedcount++; 4107 } else { 4108 if (mBadLinkspeedcount > 0) 4109 mBadLinkspeedcount--; 4110 } 4111 4112 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4113 if (isGoodLinkspeed) sb.append(" gl"); 4114 4115 /** 4116 * We want to make sure that we use the 24GHz RSSI thresholds if 4117 * there are 2.4GHz scan results 4118 * otherwise we end up lowering the score based on 5GHz values 4119 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4120 * We also might unblacklist the configuation based on 2.4GHz 4121 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4122 */ 4123 boolean use24Thresholds = false; 4124 boolean homeNetworkBoost = false; 4125 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4126 ScanDetailCache scanDetailCache = 4127 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4128 if (currentConfiguration != null && scanDetailCache != null) { 4129 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4130 if (currentConfiguration.visibility != null) { 4131 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4132 && currentConfiguration.visibility.rssi24 4133 >= (currentConfiguration.visibility.rssi5 - 2)) { 4134 use24Thresholds = true; 4135 } 4136 } 4137 if (scanDetailCache.size() <= 6 4138 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4139 && currentConfiguration.allowedKeyManagement. 4140 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4141 // A PSK network with less than 6 known BSSIDs 4142 // This is most likely a home network and thus we want to stick to wifi more 4143 homeNetworkBoost = true; 4144 } 4145 } 4146 if (homeNetworkBoost) sb.append(" hn"); 4147 if (use24Thresholds) sb.append(" u24"); 4148 4149 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4150 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4151 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4152 4153 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4154 4155 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4156 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4157 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4158 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4159 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4160 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4161 4162 if (isBadRSSI) sb.append(" br"); 4163 if (isLowRSSI) sb.append(" lr"); 4164 if (isHighRSSI) sb.append(" hr"); 4165 4166 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4167 if (currentConfiguration != null && 4168 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4169 if (isBadRSSI) { 4170 currentConfiguration.numTicksAtBadRSSI++; 4171 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4172 // We remained associated for a compound amount of time while passing 4173 // traffic, hence loose the corresponding user triggered disabled stats 4174 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4175 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4176 } 4177 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4178 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4179 } 4180 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4181 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4182 } 4183 currentConfiguration.numTicksAtBadRSSI = 0; 4184 } 4185 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4186 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4187 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4188 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4189 score = score - 5; 4190 penalizedDueToUserTriggeredDisconnect = 1; 4191 sb.append(" p1"); 4192 } 4193 } else if (isLowRSSI) { 4194 currentConfiguration.numTicksAtLowRSSI++; 4195 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4196 // We remained associated for a compound amount of time while passing 4197 // traffic, hence loose the corresponding user triggered disabled stats 4198 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4199 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4200 } 4201 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4202 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4203 } 4204 currentConfiguration.numTicksAtLowRSSI = 0; 4205 } 4206 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4207 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4208 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4209 score = score - 5; 4210 penalizedDueToUserTriggeredDisconnect = 2; 4211 sb.append(" p2"); 4212 } 4213 } else if (!isHighRSSI) { 4214 currentConfiguration.numTicksAtNotHighRSSI++; 4215 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4216 // We remained associated for a compound amount of time while passing 4217 // traffic, hence loose the corresponding user triggered disabled stats 4218 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4219 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4220 } 4221 currentConfiguration.numTicksAtNotHighRSSI = 0; 4222 } 4223 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4224 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4225 score = score - 5; 4226 penalizedDueToUserTriggeredDisconnect = 3; 4227 sb.append(" p3"); 4228 } 4229 } 4230 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4231 currentConfiguration.numTicksAtLowRSSI, 4232 currentConfiguration.numTicksAtNotHighRSSI)); 4233 } 4234 4235 if (PDBG) { 4236 String rssiStatus = ""; 4237 if (isBadRSSI) rssiStatus += " badRSSI "; 4238 else if (isHighRSSI) rssiStatus += " highRSSI "; 4239 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4240 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4241 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4242 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4243 + " score=" + Integer.toString(mWifiInfo.score) 4244 + rssiStatus 4245 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4246 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4247 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4248 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4249 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4250 } 4251 4252 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4253 && (isBadRSSI || isLowRSSI)) { 4254 // Link is stuck 4255 if (mWifiInfo.linkStuckCount < 5) 4256 mWifiInfo.linkStuckCount += 1; 4257 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4258 if (PDBG) loge(" bad link -> stuck count =" 4259 + Integer.toString(mWifiInfo.linkStuckCount)); 4260 } else if (mWifiInfo.txBadRate < 0.3) { 4261 if (mWifiInfo.linkStuckCount > 0) 4262 mWifiInfo.linkStuckCount -= 1; 4263 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4264 if (PDBG) loge(" good link -> stuck count =" 4265 + Integer.toString(mWifiInfo.linkStuckCount)); 4266 } 4267 4268 sb.append(String.format(" [%d", score)); 4269 4270 if (mWifiInfo.linkStuckCount > 1) { 4271 // Once link gets stuck for more than 3 seconds, start reducing the score 4272 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4273 } 4274 sb.append(String.format(",%d", score)); 4275 4276 if (isBadLinkspeed) { 4277 score -= 4; 4278 if (PDBG) { 4279 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4280 + " score=" + Integer.toString(score)); 4281 } 4282 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4283 score += 4; // So as bad rssi alone dont kill us 4284 } 4285 sb.append(String.format(",%d", score)); 4286 4287 if (isBadRSSI) { 4288 if (mWifiInfo.badRssiCount < 7) 4289 mWifiInfo.badRssiCount += 1; 4290 } else if (isLowRSSI) { 4291 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4292 if (mWifiInfo.badRssiCount > 0) { 4293 // Decrement bad Rssi count 4294 mWifiInfo.badRssiCount -= 1; 4295 } 4296 } else { 4297 mWifiInfo.badRssiCount = 0; 4298 mWifiInfo.lowRssiCount = 0; 4299 } 4300 4301 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4302 sb.append(String.format(",%d", score)); 4303 4304 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4305 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4306 + " --> score " + Integer.toString(score)); 4307 4308 4309 if (isHighRSSI) { 4310 score += 5; 4311 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 4312 } 4313 sb.append(String.format(",%d]", score)); 4314 4315 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4316 4317 //sanitize boundaries 4318 if (score > NetworkAgent.WIFI_BASE_SCORE) 4319 score = NetworkAgent.WIFI_BASE_SCORE; 4320 if (score < 0) 4321 score = 0; 4322 4323 //report score 4324 if (score != mWifiInfo.score) { 4325 if (DBG) { 4326 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4327 } 4328 mWifiInfo.score = score; 4329 if (mNetworkAgent != null) { 4330 mNetworkAgent.sendNetworkScore(score); 4331 } 4332 } 4333 wifiScoringReport = sb.toString(); 4334 } 4335 4336 public double getTxPacketRate() { 4337 if (mWifiInfo != null) { 4338 return mWifiInfo.txSuccessRate; 4339 } 4340 return -1; 4341 } 4342 4343 public double getRxPacketRate() { 4344 if (mWifiInfo != null) { 4345 return mWifiInfo.rxSuccessRate; 4346 } 4347 return -1; 4348 } 4349 4350 /** 4351 * Fetch TX packet counters on current connection 4352 */ 4353 private void fetchPktcntNative(RssiPacketCountInfo info) { 4354 String pktcntPoll = mWifiNative.pktcntPoll(); 4355 4356 if (pktcntPoll != null) { 4357 String[] lines = pktcntPoll.split("\n"); 4358 for (String line : lines) { 4359 String[] prop = line.split("="); 4360 if (prop.length < 2) continue; 4361 try { 4362 if (prop[0].equals("TXGOOD")) { 4363 info.txgood = Integer.parseInt(prop[1]); 4364 } else if (prop[0].equals("TXBAD")) { 4365 info.txbad = Integer.parseInt(prop[1]); 4366 } 4367 } catch (NumberFormatException e) { 4368 // Ignore 4369 } 4370 } 4371 } 4372 } 4373 4374 private boolean clearIPv4Address(String iface) { 4375 try { 4376 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4377 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4378 mNwService.setInterfaceConfig(iface, ifcg); 4379 return true; 4380 } catch (RemoteException e) { 4381 return false; 4382 } 4383 } 4384 4385 private boolean isProvisioned(LinkProperties lp) { 4386 return lp.isProvisioned() || 4387 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4388 } 4389 4390 /** 4391 * Creates a new LinkProperties object by merging information from various sources. 4392 * <p/> 4393 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4394 * netlink, static configuration, ...). When one of these sources of information has updated 4395 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4396 * information that came from other sources. Instead, when one of those sources has new 4397 * information, we update the object that tracks the information from that source and then 4398 * call this method to integrate the change into a new LinkProperties object for subsequent 4399 * comparison with mLinkProperties. 4400 * <p/> 4401 * The information used to build LinkProperties is currently obtained as follows: 4402 * - Interface name: set in the constructor. 4403 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4404 * - IPv4 routes, DNS servers, and domains: DHCP. 4405 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4406 * - HTTP proxy: the wifi config store. 4407 */ 4408 private LinkProperties makeLinkProperties() { 4409 LinkProperties newLp = new LinkProperties(); 4410 4411 // Interface name, proxy, and TCP buffer sizes are locally configured. 4412 newLp.setInterfaceName(mInterfaceName); 4413 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4414 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4415 newLp.setTcpBufferSizes(mTcpBufferSizes); 4416 } 4417 4418 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4419 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4420 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4421 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4422 newLp.addRoute(route); 4423 } 4424 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4425 // Only add likely reachable DNS servers. 4426 // TODO: investigate deleting this. 4427 if (newLp.isReachable(dns)) { 4428 newLp.addDnsServer(dns); 4429 } 4430 } 4431 4432 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4433 synchronized (mDhcpResultsLock) { 4434 // Even when we're using static configuration, we don't need to look at the config 4435 // store, because static IP configuration also populates mDhcpResults. 4436 if ((mDhcpResults != null)) { 4437 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4438 newLp.addRoute(route); 4439 } 4440 for (InetAddress dns : mDhcpResults.dnsServers) { 4441 // Only add likely reachable DNS servers. 4442 // TODO: investigate deleting this. 4443 if (newLp.isReachable(dns)) { 4444 newLp.addDnsServer(dns); 4445 } 4446 } 4447 newLp.setDomains(mDhcpResults.domains); 4448 } 4449 } 4450 4451 return newLp; 4452 } 4453 4454 private void updateLinkProperties(int reason) { 4455 LinkProperties newLp = makeLinkProperties(); 4456 4457 final boolean linkChanged = !newLp.equals(mLinkProperties); 4458 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4459 final boolean isProvisioned = isProvisioned(newLp); 4460 final boolean lostIPv4Provisioning = 4461 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4462 final DetailedState detailedState = getNetworkDetailedState(); 4463 4464 if (linkChanged) { 4465 if (DBG) { 4466 log("Link configuration changed for netId: " + mLastNetworkId 4467 + " old: " + mLinkProperties + " new: " + newLp); 4468 } 4469 mLinkProperties = newLp; 4470 if (mIpReachabilityMonitor != null) { 4471 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4472 } 4473 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4474 } 4475 4476 if (DBG) { 4477 StringBuilder sb = new StringBuilder(); 4478 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4479 sb.append(" state: " + detailedState); 4480 sb.append(" reason: " + smToString(reason)); 4481 4482 if (mLinkProperties != null) { 4483 if (mLinkProperties.hasIPv4Address()) { 4484 sb.append(" v4"); 4485 } 4486 if (mLinkProperties.hasGlobalIPv6Address()) { 4487 sb.append(" v6"); 4488 } 4489 if (mLinkProperties.hasIPv4DefaultRoute()) { 4490 sb.append(" v4r"); 4491 } 4492 if (mLinkProperties.hasIPv6DefaultRoute()) { 4493 sb.append(" v6r"); 4494 } 4495 if (mLinkProperties.hasIPv4DnsServer()) { 4496 sb.append(" v4dns"); 4497 } 4498 if (mLinkProperties.hasIPv6DnsServer()) { 4499 sb.append(" v6dns"); 4500 } 4501 if (isProvisioned) { 4502 sb.append(" isprov"); 4503 } 4504 } 4505 loge(sb.toString()); 4506 } 4507 4508 // If we just configured or lost IP configuration, do the needful. 4509 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4510 // here because those should only be called if we're attempting to connect or already 4511 // connected, whereas updateLinkProperties can be called at any time. 4512 switch (reason) { 4513 case DhcpStateMachine.DHCP_SUCCESS: 4514 case CMD_STATIC_IP_SUCCESS: 4515 // IPv4 provisioning succeded. Advance to connected state. 4516 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4517 if (!isProvisioned) { 4518 // Can never happen unless DHCP reports success but isProvisioned thinks the 4519 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4520 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4521 // TODO: disconnect here instead. If our configuration is not usable, there's no 4522 // point in staying connected, and if mLinkProperties is out of sync with 4523 // reality, that will cause problems in the future. 4524 loge("IPv4 config succeeded, but not provisioned"); 4525 } 4526 break; 4527 4528 case DhcpStateMachine.DHCP_FAILURE: 4529 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4530 // give up and disconnect. 4531 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4532 if (!isProvisioned || lostIPv4Provisioning) { 4533 sendMessage(CMD_IP_CONFIGURATION_LOST); 4534 } else { 4535 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4536 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4537 4538 // To be sure we don't get stuck with a non-working network if all we had is 4539 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4540 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4541 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4542 // necessary for provisioning, its deletion will cause us to disconnect. 4543 // 4544 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4545 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4546 // not return true if we're using DHCP and don't have an IPv4 default route. So 4547 // for now it's only here for extra redundancy. However, it will increase 4548 // robustness if we move to getting IPv4 routes from netlink as well. 4549 loge("DHCP failure: provisioned, clearing IPv4 address."); 4550 if (!clearIPv4Address(mInterfaceName)) { 4551 sendMessage(CMD_IP_CONFIGURATION_LOST); 4552 } 4553 } 4554 break; 4555 4556 case CMD_STATIC_IP_FAILURE: 4557 // Static configuration was invalid, or an error occurred in applying it. Give up. 4558 sendMessage(CMD_IP_CONFIGURATION_LOST); 4559 break; 4560 4561 case CMD_UPDATE_LINKPROPERTIES: 4562 // IP addresses, DNS servers, etc. changed. Act accordingly. 4563 if (wasProvisioned && !isProvisioned) { 4564 // We no longer have a usable network configuration. Disconnect. 4565 sendMessage(CMD_IP_CONFIGURATION_LOST); 4566 } else if (!wasProvisioned && isProvisioned) { 4567 // We have a usable IPv6-only config. Advance to connected state. 4568 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4569 } 4570 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4571 // If anything has changed and we're already connected, send out a notification. 4572 sendLinkConfigurationChangedBroadcast(); 4573 } 4574 break; 4575 } 4576 } 4577 4578 /** 4579 * Clears all our link properties. 4580 */ 4581 private void clearLinkProperties() { 4582 // Clear the link properties obtained from DHCP and netlink. 4583 synchronized (mDhcpResultsLock) { 4584 if (mDhcpResults != null) { 4585 mDhcpResults.clear(); 4586 } 4587 } 4588 mNetlinkTracker.clearLinkProperties(); 4589 if (mIpReachabilityMonitor != null) { 4590 mIpReachabilityMonitor.clearLinkProperties(); 4591 } 4592 4593 // Now clear the merged link properties. 4594 mLinkProperties.clear(); 4595 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4596 } 4597 4598 /** 4599 * try to update default route MAC address. 4600 */ 4601 private String updateDefaultRouteMacAddress(int timeout) { 4602 String address = null; 4603 for (RouteInfo route : mLinkProperties.getRoutes()) { 4604 if (route.isDefaultRoute() && route.hasGateway()) { 4605 InetAddress gateway = route.getGateway(); 4606 if (gateway instanceof Inet4Address) { 4607 if (PDBG) { 4608 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4609 + gateway.getHostAddress()); 4610 } 4611 address = macAddressFromRoute(gateway.getHostAddress()); 4612 /* The gateway's MAC address is known */ 4613 if ((address == null) && (timeout > 0)) { 4614 boolean reachable = false; 4615 try { 4616 reachable = gateway.isReachable(timeout); 4617 } catch (Exception e) { 4618 loge("updateDefaultRouteMacAddress exception reaching :" 4619 + gateway.getHostAddress()); 4620 4621 } finally { 4622 if (reachable == true) { 4623 4624 address = macAddressFromRoute(gateway.getHostAddress()); 4625 if (PDBG) { 4626 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4627 + gateway.getHostAddress() + " found " + address); 4628 } 4629 } 4630 } 4631 } 4632 if (address != null) { 4633 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4634 } 4635 } 4636 } 4637 } 4638 return address; 4639 } 4640 4641 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4642 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4643 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4644 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4645 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4646 } 4647 4648 private void sendRssiChangeBroadcast(final int newRssi) { 4649 try { 4650 mBatteryStats.noteWifiRssiChanged(newRssi); 4651 } catch (RemoteException e) { 4652 // Won't happen. 4653 } 4654 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4655 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4656 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4657 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4658 } 4659 4660 private void sendNetworkStateChangeBroadcast(String bssid) { 4661 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4662 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4663 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4664 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4665 if (bssid != null) 4666 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4667 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4668 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4669 // We no longer report MAC address to third-parties and our code does 4670 // not rely on this broadcast, so just send the default MAC address. 4671 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4672 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4673 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4674 } 4675 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4676 } 4677 4678 private WifiInfo getWiFiInfoForUid(int uid) { 4679 if (Binder.getCallingUid() == Process.myUid()) { 4680 return mWifiInfo; 4681 } 4682 4683 WifiInfo result = new WifiInfo(mWifiInfo); 4684 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4685 4686 IBinder binder = ServiceManager.getService("package"); 4687 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4688 4689 try { 4690 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4691 uid) == PackageManager.PERMISSION_GRANTED) { 4692 result.setMacAddress(mWifiInfo.getMacAddress()); 4693 } 4694 } catch (RemoteException e) { 4695 Log.e(TAG, "Error checking receiver permission", e); 4696 } 4697 4698 return result; 4699 } 4700 4701 private void sendLinkConfigurationChangedBroadcast() { 4702 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4703 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4704 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4705 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4706 } 4707 4708 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4709 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4710 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4711 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4712 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4713 } 4714 4715 /** 4716 * Record the detailed state of a network. 4717 * 4718 * @param state the new {@code DetailedState} 4719 */ 4720 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4721 boolean hidden = false; 4722 4723 if (linkDebouncing || isRoaming()) { 4724 // There is generally a confusion in the system about colluding 4725 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4726 // which leads to multiple confusion. 4727 // 4728 // If link is de-bouncing or roaming, we already have an IP address 4729 // as well we were connected and are doing L2 cycles of 4730 // reconnecting or renewing IP address to check that we still have it 4731 // This L2 link flapping should ne be reflected into the Network state 4732 // which is the state of the WiFi Network visible to Layer 3 and applications 4733 // Note that once debouncing and roaming are completed, we will 4734 // set the Network state to where it should be, or leave it as unchanged 4735 // 4736 hidden = true; 4737 } 4738 if (DBG) { 4739 log("setDetailed state, old =" 4740 + mNetworkInfo.getDetailedState() + " and new state=" + state 4741 + " hidden=" + hidden); 4742 } 4743 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4744 // Always indicate that SSID has changed 4745 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4746 if (DBG) { 4747 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4748 } 4749 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4750 sendNetworkStateChangeBroadcast(null); 4751 } 4752 } 4753 if (hidden == true) { 4754 return false; 4755 } 4756 4757 if (state != mNetworkInfo.getDetailedState()) { 4758 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4759 if (mNetworkAgent != null) { 4760 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4761 } 4762 sendNetworkStateChangeBroadcast(null); 4763 return true; 4764 } 4765 return false; 4766 } 4767 4768 private DetailedState getNetworkDetailedState() { 4769 return mNetworkInfo.getDetailedState(); 4770 } 4771 4772 private SupplicantState handleSupplicantStateChange(Message message) { 4773 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4774 SupplicantState state = stateChangeResult.state; 4775 // Supplicant state change 4776 // [31-13] Reserved for future use 4777 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4778 // 50023 supplicant_state_changed (custom|1|5) 4779 mWifiInfo.setSupplicantState(state); 4780 // Network id is only valid when we start connecting 4781 if (SupplicantState.isConnecting(state)) { 4782 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4783 } else { 4784 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4785 } 4786 4787 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4788 4789 if (mWhiteListedSsids != null 4790 && mWhiteListedSsids.length > 0 4791 && stateChangeResult.wifiSsid != null) { 4792 String SSID = stateChangeResult.wifiSsid.toString(); 4793 String currentSSID = mWifiInfo.getSSID(); 4794 if (SSID != null 4795 && currentSSID != null 4796 && !SSID.equals(WifiSsid.NONE)) { 4797 // Remove quote before comparing 4798 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4799 && SSID.charAt(SSID.length() - 1) == '"') 4800 { 4801 SSID = SSID.substring(1, SSID.length() - 1); 4802 } 4803 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4804 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4805 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4806 } 4807 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4808 lastConnectAttempt = System.currentTimeMillis(); 4809 targetWificonfiguration 4810 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4811 transitionTo(mRoamingState); 4812 } 4813 } 4814 } 4815 4816 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4817 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4818 4819 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4820 4821 return state; 4822 } 4823 4824 /** 4825 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4826 * using the interface, stopping DHCP & disabling interface 4827 */ 4828 private void handleNetworkDisconnect() { 4829 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4830 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4831 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4832 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4833 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4834 4835 4836 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4837 4838 stopDhcp(); 4839 4840 try { 4841 mNwService.clearInterfaceAddresses(mInterfaceName); 4842 mNwService.disableIpv6(mInterfaceName); 4843 } catch (Exception e) { 4844 loge("Failed to clear addresses or disable ipv6" + e); 4845 } 4846 4847 /* Reset data structures */ 4848 mBadLinkspeedcount = 0; 4849 mWifiInfo.reset(); 4850 linkDebouncing = false; 4851 /* Reset roaming parameters */ 4852 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4853 4854 /** 4855 * fullBandConnectedTimeIntervalMilli: 4856 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4857 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4858 * Initialize to sane value = 20 seconds 4859 */ 4860 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4861 4862 setNetworkDetailedState(DetailedState.DISCONNECTED); 4863 if (mNetworkAgent != null) { 4864 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4865 mNetworkAgent = null; 4866 } 4867 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4868 4869 /* Clear network properties */ 4870 clearLinkProperties(); 4871 4872 /* Cend event to CM & network change broadcast */ 4873 sendNetworkStateChangeBroadcast(mLastBssid); 4874 4875 /* Cancel auto roam requests */ 4876 autoRoamSetBSSID(mLastNetworkId, "any"); 4877 4878 mLastBssid = null; 4879 registerDisconnected(); 4880 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4881 } 4882 4883 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4884 /* Socket connection can be lost when we do a graceful shutdown 4885 * or when the driver is hung. Ensure supplicant is stopped here. 4886 */ 4887 if (killSupplicant) { 4888 mWifiMonitor.killSupplicant(mP2pSupported); 4889 } 4890 mWifiNative.closeSupplicantConnection(); 4891 sendSupplicantConnectionChangedBroadcast(false); 4892 setWifiState(WIFI_STATE_DISABLED); 4893 } 4894 4895 void handlePreDhcpSetup() { 4896 mDhcpActive = true; 4897 if (!mBluetoothConnectionActive) { 4898 /* 4899 * There are problems setting the Wi-Fi driver's power 4900 * mode to active when bluetooth coexistence mode is 4901 * enabled or sense. 4902 * <p> 4903 * We set Wi-Fi to active mode when 4904 * obtaining an IP address because we've found 4905 * compatibility issues with some routers with low power 4906 * mode. 4907 * <p> 4908 * In order for this active power mode to properly be set, 4909 * we disable coexistence mode until we're done with 4910 * obtaining an IP address. One exception is if we 4911 * are currently connected to a headset, since disabling 4912 * coexistence would interrupt that connection. 4913 */ 4914 // Disable the coexistence mode 4915 mWifiNative.setBluetoothCoexistenceMode( 4916 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4917 } 4918 4919 // Disable power save and suspend optimizations during DHCP 4920 // Note: The order here is important for now. Brcm driver changes 4921 // power settings when we control suspend mode optimizations. 4922 // TODO: Remove this comment when the driver is fixed. 4923 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4924 mWifiNative.setPowerSave(false); 4925 4926 // Update link layer stats 4927 getWifiLinkLayerStats(false); 4928 4929 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4930 Message msg = new Message(); 4931 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4932 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4933 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4934 msg.obj = mDhcpStateMachine; 4935 mWifiP2pChannel.sendMessage(msg); 4936 } 4937 4938 4939 private boolean useLegacyDhcpClient() { 4940 return Settings.Global.getInt( 4941 mContext.getContentResolver(), 4942 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4943 } 4944 4945 private void maybeInitDhcpStateMachine() { 4946 if (mDhcpStateMachine == null) { 4947 if (useLegacyDhcpClient()) { 4948 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4949 mContext, WifiStateMachine.this, mInterfaceName); 4950 } else { 4951 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4952 mContext, WifiStateMachine.this, mInterfaceName); 4953 } 4954 } 4955 } 4956 4957 void startDhcp() { 4958 maybeInitDhcpStateMachine(); 4959 mDhcpStateMachine.registerForPreDhcpNotification(); 4960 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4961 } 4962 4963 void renewDhcp() { 4964 maybeInitDhcpStateMachine(); 4965 mDhcpStateMachine.registerForPreDhcpNotification(); 4966 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4967 } 4968 4969 void stopDhcp() { 4970 if (mDhcpStateMachine != null) { 4971 /* In case we were in middle of DHCP operation restore back powermode */ 4972 handlePostDhcpSetup(); 4973 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4974 } 4975 } 4976 4977 void handlePostDhcpSetup() { 4978 /* Restore power save and suspend optimizations */ 4979 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4980 mWifiNative.setPowerSave(true); 4981 4982 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4983 4984 // Set the coexistence mode back to its default value 4985 mWifiNative.setBluetoothCoexistenceMode( 4986 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4987 4988 mDhcpActive = false; 4989 } 4990 4991 void connectScanningService() { 4992 4993 if (mWifiScanner == null) { 4994 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4995 } 4996 } 4997 4998 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4999 5000 if (PDBG) { 5001 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 5002 loge("link address " + dhcpResults.ipAddress); 5003 } 5004 5005 Inet4Address addr; 5006 synchronized (mDhcpResultsLock) { 5007 mDhcpResults = dhcpResults; 5008 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5009 } 5010 5011 if (isRoaming()) { 5012 int previousAddress = mWifiInfo.getIpAddress(); 5013 int newAddress = NetworkUtils.inetAddressToInt(addr); 5014 if (previousAddress != newAddress) { 5015 loge("handleIPv4Success, roaming and address changed" + 5016 mWifiInfo + " got: " + addr); 5017 } 5018 } 5019 mWifiInfo.setInetAddress(addr); 5020 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5021 updateLinkProperties(reason); 5022 } 5023 5024 private void handleSuccessfulIpConfiguration() { 5025 mLastSignalLevel = -1; // Force update of signal strength 5026 WifiConfiguration c = getCurrentWifiConfiguration(); 5027 if (c != null) { 5028 // Reset IP failure tracking 5029 c.numConnectionFailures = 0; 5030 5031 // Tell the framework whether the newly connected network is trusted or untrusted. 5032 updateCapabilities(c); 5033 } 5034 if (c != null) { 5035 ScanResult result = getCurrentScanResult(); 5036 if (result == null) { 5037 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5038 c.configKey()); 5039 } else { 5040 // Clear the per BSSID failure count 5041 result.numIpConfigFailures = 0; 5042 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5043 // any BSSID, even though it may already have a non zero ip failure count, 5044 // this will typically happen if the user walks away and come back to his arrea 5045 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5046 // in supplicant for a couple of hours or a day 5047 mWifiConfigStore.clearBssidBlacklist(); 5048 } 5049 } 5050 } 5051 5052 private void handleIPv4Failure(int reason) { 5053 synchronized(mDhcpResultsLock) { 5054 if (mDhcpResults != null) { 5055 mDhcpResults.clear(); 5056 } 5057 } 5058 if (PDBG) { 5059 loge("wifistatemachine handleIPv4Failure"); 5060 } 5061 updateLinkProperties(reason); 5062 } 5063 5064 private void handleIpConfigurationLost() { 5065 mWifiInfo.setInetAddress(null); 5066 mWifiInfo.setMeteredHint(false); 5067 5068 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5069 "DHCP FAILURE", mWifiInfo.getBSSID()); 5070 5071 /* DHCP times out after about 30 seconds, we do a 5072 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5073 */ 5074 mWifiNative.disconnect(); 5075 } 5076 5077 // TODO: De-duplicated this and handleIpConfigurationLost(). 5078 private void handleIpReachabilityLost() { 5079 // No need to be told about any additional neighbors that might also 5080 // become unreachable--quiet them now while we start disconnecting. 5081 if (mIpReachabilityMonitor != null) { 5082 mIpReachabilityMonitor.clearLinkProperties(); 5083 } 5084 5085 mWifiInfo.setInetAddress(null); 5086 mWifiInfo.setMeteredHint(false); 5087 5088 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5089 5090 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5091 mWifiNative.disconnect(); 5092 } 5093 5094 private int convertFrequencyToChannelNumber(int frequency) { 5095 if (frequency >= 2412 && frequency <= 2484) { 5096 return (frequency -2412) / 5 + 1; 5097 } else if (frequency >= 5170 && frequency <=5825) { 5098 //DFS is included 5099 return (frequency -5170) / 5 + 34; 5100 } else { 5101 return 0; 5102 } 5103 } 5104 5105 private int chooseApChannel(int apBand) { 5106 int apChannel; 5107 int[] channel; 5108 5109 if (apBand == 0) { 5110 //for 2.4GHz, we only set the AP at channel 1,6,11 5111 apChannel = 5 * mRandom.nextInt(3) + 1; 5112 } else { 5113 //5G without DFS 5114 channel = mWifiNative.getChannelsForBand(2); 5115 if (channel != null && channel.length > 0) { 5116 apChannel = channel[mRandom.nextInt(channel.length)]; 5117 apChannel = convertFrequencyToChannelNumber(apChannel); 5118 } else { 5119 Log.e(TAG, "SoftAp do not get available channel list"); 5120 apChannel = 0; 5121 } 5122 } 5123 5124 if(DBG) { 5125 Log.d(TAG, "SoftAp set on channel " + apChannel); 5126 } 5127 5128 return apChannel; 5129 } 5130 5131 /* SoftAP configuration */ 5132 private boolean enableSoftAp() { 5133 if (WifiNative.getInterfaces() != 0) { 5134 if (!mWifiNative.toggleInterface(0)) { 5135 if (DBG) Log.e(TAG, "toggleInterface failed"); 5136 return false; 5137 } 5138 } else { 5139 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5140 } 5141 5142 try { 5143 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5144 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5145 } catch (Exception e) { 5146 Log.e(TAG, "Failed to reload AP firmware " + e); 5147 } 5148 5149 if (WifiNative.startHal() == false) { 5150 /* starting HAL is optional */ 5151 Log.e(TAG, "Failed to start HAL"); 5152 } 5153 return true; 5154 } 5155 5156 /* Current design is to not set the config on a running hostapd but instead 5157 * stop and start tethering when user changes config on a running access point 5158 * 5159 * TODO: Add control channel setup through hostapd that allows changing config 5160 * on a running daemon 5161 */ 5162 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5163 // set channel 5164 final WifiConfiguration config = new WifiConfiguration(configuration); 5165 5166 if (DBG) { 5167 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5168 } 5169 5170 //We need HAL support to set country code and get available channel list, if HAL is 5171 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5172 if (mWifiNative.isHalStarted()) { 5173 //set country code through HAL Here 5174 if (mSetCountryCode != null) { 5175 if (!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 5176 if (config.apBand != 0) { 5177 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5178 //countrycode is mandatory for 5GHz 5179 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5180 return; 5181 } 5182 } 5183 } else { 5184 if (config.apBand != 0) { 5185 //countrycode is mandatory for 5GHz 5186 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5187 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5188 return; 5189 } 5190 } 5191 5192 if (config.apChannel == 0) { 5193 config.apChannel = chooseApChannel(config.apBand); 5194 if (config.apChannel == 0) { 5195 //fail to get available channel 5196 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5197 return; 5198 } 5199 } 5200 } else { 5201 //for some old device, wifiHal may not be supported 5202 config.apChannel = 0; 5203 config.apChannel = 6; 5204 } 5205 // Start hostapd on a separate thread 5206 new Thread(new Runnable() { 5207 public void run() { 5208 try { 5209 mNwService.startAccessPoint(config, mInterfaceName); 5210 } catch (Exception e) { 5211 loge("Exception in softap start " + e); 5212 try { 5213 mNwService.stopAccessPoint(mInterfaceName); 5214 mNwService.startAccessPoint(config, mInterfaceName); 5215 } catch (Exception e1) { 5216 loge("Exception in softap re-start " + e1); 5217 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5218 return; 5219 } 5220 } 5221 if (DBG) log("Soft AP start successful"); 5222 sendMessage(CMD_START_AP_SUCCESS); 5223 } 5224 }).start(); 5225 } 5226 5227 /* 5228 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5229 * so as to record MAC address of default gateway. 5230 **/ 5231 private String macAddressFromRoute(String ipAddress) { 5232 String macAddress = null; 5233 BufferedReader reader = null; 5234 try { 5235 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5236 5237 // Skip over the line bearing colum titles 5238 String line = reader.readLine(); 5239 5240 while ((line = reader.readLine()) != null) { 5241 String[] tokens = line.split("[ ]+"); 5242 if (tokens.length < 6) { 5243 continue; 5244 } 5245 5246 // ARP column format is 5247 // Address HWType HWAddress Flags Mask IFace 5248 String ip = tokens[0]; 5249 String mac = tokens[3]; 5250 5251 if (ipAddress.equals(ip)) { 5252 macAddress = mac; 5253 break; 5254 } 5255 } 5256 5257 if (macAddress == null) { 5258 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5259 "/proc/net/arp"); 5260 } 5261 5262 } catch (FileNotFoundException e) { 5263 loge("Could not open /proc/net/arp to lookup mac address"); 5264 } catch (IOException e) { 5265 loge("Could not read /proc/net/arp to lookup mac address"); 5266 } finally { 5267 try { 5268 if (reader != null) { 5269 reader.close(); 5270 } 5271 } catch (IOException e) { 5272 // Do nothing 5273 } 5274 } 5275 return macAddress; 5276 5277 } 5278 5279 private class WifiNetworkFactory extends NetworkFactory { 5280 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5281 super(l, c, TAG, f); 5282 } 5283 5284 @Override 5285 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5286 ++mConnectionRequests; 5287 } 5288 5289 @Override 5290 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5291 --mConnectionRequests; 5292 } 5293 5294 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5295 pw.println("mConnectionRequests " + mConnectionRequests); 5296 } 5297 5298 } 5299 5300 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5301 private int mUntrustedReqCount; 5302 5303 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5304 super(l, c, tag, f); 5305 } 5306 5307 @Override 5308 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5309 if (!networkRequest.networkCapabilities.hasCapability( 5310 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5311 if (++mUntrustedReqCount == 1) { 5312 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5313 } 5314 } 5315 } 5316 5317 @Override 5318 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5319 if (!networkRequest.networkCapabilities.hasCapability( 5320 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5321 if (--mUntrustedReqCount == 0) { 5322 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5323 } 5324 } 5325 } 5326 5327 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5328 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5329 } 5330 } 5331 5332 void maybeRegisterNetworkFactory() { 5333 if (mNetworkFactory == null) { 5334 checkAndSetConnectivityInstance(); 5335 if (mCm != null) { 5336 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5337 NETWORKTYPE, mNetworkCapabilitiesFilter); 5338 mNetworkFactory.setScoreFilter(60); 5339 mNetworkFactory.register(); 5340 5341 // We can't filter untrusted network in the capabilities filter because a trusted 5342 // network would still satisfy a request that accepts untrusted ones. 5343 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5344 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5345 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5346 mUntrustedNetworkFactory.register(); 5347 } 5348 } 5349 } 5350 5351 /******************************************************** 5352 * HSM states 5353 *******************************************************/ 5354 5355 class DefaultState extends State { 5356 @Override 5357 public boolean processMessage(Message message) { 5358 logStateAndMessage(message, getClass().getSimpleName()); 5359 5360 switch (message.what) { 5361 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5362 AsyncChannel ac = (AsyncChannel) message.obj; 5363 if (ac == mWifiP2pChannel) { 5364 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5365 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5366 } else { 5367 loge("WifiP2pService connection failure, error=" + message.arg1); 5368 } 5369 } else { 5370 loge("got HALF_CONNECTED for unknown channel"); 5371 } 5372 break; 5373 } 5374 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5375 AsyncChannel ac = (AsyncChannel) message.obj; 5376 if (ac == mWifiP2pChannel) { 5377 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5378 //TODO: Re-establish connection to state machine after a delay 5379 // mWifiP2pChannel.connect(mContext, getHandler(), 5380 // mWifiP2pManager.getMessenger()); 5381 } 5382 break; 5383 } 5384 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5385 mBluetoothConnectionActive = (message.arg1 != 5386 BluetoothAdapter.STATE_DISCONNECTED); 5387 break; 5388 /* Synchronous call returns */ 5389 case CMD_PING_SUPPLICANT: 5390 case CMD_ENABLE_NETWORK: 5391 case CMD_ADD_OR_UPDATE_NETWORK: 5392 case CMD_REMOVE_NETWORK: 5393 case CMD_SAVE_CONFIG: 5394 replyToMessage(message, message.what, FAILURE); 5395 break; 5396 case CMD_GET_CAPABILITY_FREQ: 5397 replyToMessage(message, message.what, null); 5398 break; 5399 case CMD_GET_CONFIGURED_NETWORKS: 5400 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5401 break; 5402 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5403 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5404 break; 5405 case CMD_ENABLE_RSSI_POLL: 5406 mEnableRssiPolling = (message.arg1 == 1); 5407 break; 5408 case CMD_SET_HIGH_PERF_MODE: 5409 if (message.arg1 == 1) { 5410 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5411 } else { 5412 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5413 } 5414 break; 5415 case CMD_BOOT_COMPLETED: 5416 maybeRegisterNetworkFactory(); 5417 break; 5418 case CMD_SCREEN_STATE_CHANGED: 5419 handleScreenStateChanged(message.arg1 != 0); 5420 break; 5421 /* Discard */ 5422 case CMD_START_SCAN: 5423 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5424 break; 5425 case CMD_START_SUPPLICANT: 5426 case CMD_STOP_SUPPLICANT: 5427 case CMD_STOP_SUPPLICANT_FAILED: 5428 case CMD_START_DRIVER: 5429 case CMD_STOP_DRIVER: 5430 case CMD_DELAYED_STOP_DRIVER: 5431 case CMD_DRIVER_START_TIMED_OUT: 5432 case CMD_START_AP: 5433 case CMD_START_AP_SUCCESS: 5434 case CMD_START_AP_FAILURE: 5435 case CMD_STOP_AP: 5436 case CMD_TETHER_STATE_CHANGE: 5437 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5438 case CMD_DISCONNECT: 5439 case CMD_RECONNECT: 5440 case CMD_REASSOCIATE: 5441 case CMD_RELOAD_TLS_AND_RECONNECT: 5442 case WifiMonitor.SUP_CONNECTION_EVENT: 5443 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5444 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5445 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5446 case WifiMonitor.SCAN_RESULTS_EVENT: 5447 case WifiMonitor.SCAN_FAILED_EVENT: 5448 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5449 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5450 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5451 case WifiMonitor.WPS_OVERLAP_EVENT: 5452 case CMD_BLACKLIST_NETWORK: 5453 case CMD_CLEAR_BLACKLIST: 5454 case CMD_SET_OPERATIONAL_MODE: 5455 case CMD_SET_COUNTRY_CODE: 5456 case CMD_SET_FREQUENCY_BAND: 5457 case CMD_RSSI_POLL: 5458 case CMD_ENABLE_ALL_NETWORKS: 5459 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5460 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5461 /* Handled by WifiApConfigStore */ 5462 case CMD_SET_AP_CONFIG: 5463 case CMD_SET_AP_CONFIG_COMPLETED: 5464 case CMD_REQUEST_AP_CONFIG: 5465 case CMD_RESPONSE_AP_CONFIG: 5466 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5467 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5468 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5469 case CMD_DISABLE_P2P_RSP: 5470 case WifiMonitor.SUP_REQUEST_IDENTITY: 5471 case CMD_TEST_NETWORK_DISCONNECT: 5472 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5473 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5474 case CMD_TARGET_BSSID: 5475 case CMD_AUTO_CONNECT: 5476 case CMD_AUTO_ROAM: 5477 case CMD_AUTO_SAVE_NETWORK: 5478 case CMD_ASSOCIATED_BSSID: 5479 case CMD_UNWANTED_NETWORK: 5480 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5481 case CMD_ROAM_WATCHDOG_TIMER: 5482 case CMD_DISABLE_EPHEMERAL_NETWORK: 5483 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5484 case CMD_STARTED_PNO_DBG: 5485 case CMD_STARTED_GSCAN_DBG: 5486 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5487 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5488 break; 5489 case DhcpStateMachine.CMD_ON_QUIT: 5490 mDhcpStateMachine = null; 5491 break; 5492 case CMD_SET_SUSPEND_OPT_ENABLED: 5493 if (message.arg1 == 1) { 5494 mSuspendWakeLock.release(); 5495 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5496 } else { 5497 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5498 } 5499 break; 5500 case WifiMonitor.DRIVER_HUNG_EVENT: 5501 setSupplicantRunning(false); 5502 setSupplicantRunning(true); 5503 break; 5504 case WifiManager.CONNECT_NETWORK: 5505 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5506 WifiManager.BUSY); 5507 break; 5508 case WifiManager.FORGET_NETWORK: 5509 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5510 WifiManager.BUSY); 5511 break; 5512 case WifiManager.SAVE_NETWORK: 5513 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5514 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5515 WifiManager.BUSY); 5516 break; 5517 case WifiManager.START_WPS: 5518 replyToMessage(message, WifiManager.WPS_FAILED, 5519 WifiManager.BUSY); 5520 break; 5521 case WifiManager.CANCEL_WPS: 5522 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5523 WifiManager.BUSY); 5524 break; 5525 case WifiManager.DISABLE_NETWORK: 5526 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5527 WifiManager.BUSY); 5528 break; 5529 case WifiManager.RSSI_PKTCNT_FETCH: 5530 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5531 WifiManager.BUSY); 5532 break; 5533 case CMD_GET_SUPPORTED_FEATURES: 5534 int featureSet = WifiNative.getSupportedFeatureSet(); 5535 replyToMessage(message, message.what, featureSet); 5536 break; 5537 case CMD_FIRMWARE_ALERT: 5538 if (mWifiLogger != null) { 5539 byte[] buffer = (byte[])message.obj; 5540 mWifiLogger.captureAlertData(message.arg1, buffer); 5541 } 5542 break; 5543 case CMD_GET_LINK_LAYER_STATS: 5544 // Not supported hence reply with error message 5545 replyToMessage(message, message.what, null); 5546 break; 5547 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5548 NetworkInfo info = (NetworkInfo) message.obj; 5549 mP2pConnected.set(info.isConnected()); 5550 break; 5551 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5552 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5553 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5554 break; 5555 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5556 case CMD_UPDATE_LINKPROPERTIES: 5557 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5558 break; 5559 case CMD_GET_MATCHING_CONFIG: 5560 replyToMessage(message, message.what); 5561 break; 5562 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5563 case CMD_IP_CONFIGURATION_LOST: 5564 case CMD_IP_REACHABILITY_LOST: 5565 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5566 break; 5567 case CMD_GET_CONNECTION_STATISTICS: 5568 replyToMessage(message, message.what, mWifiConnectionStatistics); 5569 break; 5570 case CMD_REMOVE_APP_CONFIGURATIONS: 5571 deferMessage(message); 5572 break; 5573 case CMD_REMOVE_USER_CONFIGURATIONS: 5574 deferMessage(message); 5575 break; 5576 default: 5577 loge("Error! unhandled message" + message); 5578 break; 5579 } 5580 return HANDLED; 5581 } 5582 } 5583 5584 class InitialState extends State { 5585 @Override 5586 public void enter() { 5587 WifiNative.stopHal(); 5588 mWifiNative.unloadDriver(); 5589 if (mWifiP2pChannel == null) { 5590 mWifiP2pChannel = new AsyncChannel(); 5591 mWifiP2pChannel.connect(mContext, getHandler(), 5592 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5593 } 5594 5595 if (mWifiApConfigChannel == null) { 5596 mWifiApConfigChannel = new AsyncChannel(); 5597 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5598 mContext, getHandler()); 5599 wifiApConfigStore.loadApConfiguration(); 5600 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5601 wifiApConfigStore.getMessenger()); 5602 } 5603 5604 if (mWifiConfigStore.enableHalBasedPno.get()) { 5605 // make sure developer Settings are in sync with the config option 5606 mHalBasedPnoEnableInDevSettings = true; 5607 } 5608 } 5609 @Override 5610 public boolean processMessage(Message message) { 5611 logStateAndMessage(message, getClass().getSimpleName()); 5612 switch (message.what) { 5613 case CMD_START_SUPPLICANT: 5614 if (mWifiNative.loadDriver()) { 5615 try { 5616 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5617 } catch (Exception e) { 5618 loge("Failed to reload STA firmware " + e); 5619 // Continue 5620 } 5621 5622 try { 5623 // A runtime crash can leave the interface up and 5624 // IP addresses configured, and this affects 5625 // connectivity when supplicant starts up. 5626 // Ensure interface is down and we have no IP 5627 // addresses before a supplicant start. 5628 mNwService.setInterfaceDown(mInterfaceName); 5629 mNwService.clearInterfaceAddresses(mInterfaceName); 5630 5631 // Set privacy extensions 5632 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5633 5634 // IPv6 is enabled only as long as access point is connected since: 5635 // - IPv6 addresses and routes stick around after disconnection 5636 // - kernel is unaware when connected and fails to start IPv6 negotiation 5637 // - kernel can start autoconfiguration when 802.1x is not complete 5638 mNwService.disableIpv6(mInterfaceName); 5639 } catch (RemoteException re) { 5640 loge("Unable to change interface settings: " + re); 5641 } catch (IllegalStateException ie) { 5642 loge("Unable to change interface settings: " + ie); 5643 } 5644 5645 /* Stop a running supplicant after a runtime restart 5646 * Avoids issues with drivers that do not handle interface down 5647 * on a running supplicant properly. 5648 */ 5649 mWifiMonitor.killSupplicant(mP2pSupported); 5650 5651 if (WifiNative.startHal() == false) { 5652 /* starting HAL is optional */ 5653 loge("Failed to start HAL"); 5654 } 5655 5656 if (mWifiNative.startSupplicant(mP2pSupported)) { 5657 setWifiState(WIFI_STATE_ENABLING); 5658 if (DBG) log("Supplicant start successful"); 5659 mWifiMonitor.startMonitoring(); 5660 transitionTo(mSupplicantStartingState); 5661 } else { 5662 loge("Failed to start supplicant!"); 5663 } 5664 } else { 5665 loge("Failed to load driver"); 5666 } 5667 break; 5668 case CMD_START_AP: 5669 if (mWifiNative.loadDriver() == false) { 5670 loge("Failed to load driver for softap"); 5671 } else { 5672 if (enableSoftAp() == true) { 5673 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5674 transitionTo(mSoftApStartingState); 5675 } else { 5676 setWifiApState(WIFI_AP_STATE_FAILED, 5677 WifiManager.SAP_START_FAILURE_GENERAL); 5678 transitionTo(mInitialState); 5679 } 5680 } 5681 break; 5682 default: 5683 return NOT_HANDLED; 5684 } 5685 return HANDLED; 5686 } 5687 } 5688 5689 class SupplicantStartingState extends State { 5690 private void initializeWpsDetails() { 5691 String detail; 5692 detail = SystemProperties.get("ro.product.name", ""); 5693 if (!mWifiNative.setDeviceName(detail)) { 5694 loge("Failed to set device name " + detail); 5695 } 5696 detail = SystemProperties.get("ro.product.manufacturer", ""); 5697 if (!mWifiNative.setManufacturer(detail)) { 5698 loge("Failed to set manufacturer " + detail); 5699 } 5700 detail = SystemProperties.get("ro.product.model", ""); 5701 if (!mWifiNative.setModelName(detail)) { 5702 loge("Failed to set model name " + detail); 5703 } 5704 detail = SystemProperties.get("ro.product.model", ""); 5705 if (!mWifiNative.setModelNumber(detail)) { 5706 loge("Failed to set model number " + detail); 5707 } 5708 detail = SystemProperties.get("ro.serialno", ""); 5709 if (!mWifiNative.setSerialNumber(detail)) { 5710 loge("Failed to set serial number " + detail); 5711 } 5712 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5713 loge("Failed to set WPS config methods"); 5714 } 5715 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5716 loge("Failed to set primary device type " + mPrimaryDeviceType); 5717 } 5718 } 5719 5720 @Override 5721 public boolean processMessage(Message message) { 5722 logStateAndMessage(message, getClass().getSimpleName()); 5723 5724 switch(message.what) { 5725 case WifiMonitor.SUP_CONNECTION_EVENT: 5726 if (DBG) log("Supplicant connection established"); 5727 setWifiState(WIFI_STATE_ENABLED); 5728 mSupplicantRestartCount = 0; 5729 /* Reset the supplicant state to indicate the supplicant 5730 * state is not known at this time */ 5731 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5732 /* Initialize data structures */ 5733 mLastBssid = null; 5734 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5735 mLastSignalLevel = -1; 5736 5737 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5738 mWifiNative.enableSaveConfig(); 5739 mWifiConfigStore.loadAndEnableAllNetworks(); 5740 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5741 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5742 } 5743 initializeWpsDetails(); 5744 5745 sendSupplicantConnectionChangedBroadcast(true); 5746 transitionTo(mDriverStartedState); 5747 break; 5748 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5749 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5750 loge("Failed to setup control channel, restart supplicant"); 5751 mWifiMonitor.killSupplicant(mP2pSupported); 5752 transitionTo(mInitialState); 5753 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5754 } else { 5755 loge("Failed " + mSupplicantRestartCount + 5756 " times to start supplicant, unload driver"); 5757 mSupplicantRestartCount = 0; 5758 setWifiState(WIFI_STATE_UNKNOWN); 5759 transitionTo(mInitialState); 5760 } 5761 break; 5762 case CMD_START_SUPPLICANT: 5763 case CMD_STOP_SUPPLICANT: 5764 case CMD_START_AP: 5765 case CMD_STOP_AP: 5766 case CMD_START_DRIVER: 5767 case CMD_STOP_DRIVER: 5768 case CMD_SET_OPERATIONAL_MODE: 5769 case CMD_SET_COUNTRY_CODE: 5770 case CMD_SET_FREQUENCY_BAND: 5771 case CMD_START_PACKET_FILTERING: 5772 case CMD_STOP_PACKET_FILTERING: 5773 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5774 deferMessage(message); 5775 break; 5776 default: 5777 return NOT_HANDLED; 5778 } 5779 return HANDLED; 5780 } 5781 } 5782 5783 class SupplicantStartedState extends State { 5784 @Override 5785 public void enter() { 5786 /* Wifi is available as long as we have a connection to supplicant */ 5787 mNetworkInfo.setIsAvailable(true); 5788 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5789 5790 int defaultInterval = mContext.getResources().getInteger( 5791 R.integer.config_wifi_supplicant_scan_interval); 5792 5793 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5794 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5795 defaultInterval); 5796 5797 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5798 mWifiNative.setExternalSim(true); 5799 5800 /* turn on use of DFS channels */ 5801 WifiNative.setDfsFlag(true); 5802 5803 /* set country code */ 5804 setCountryCode(); 5805 5806 setRandomMacOui(); 5807 mWifiNative.enableAutoConnect(false); 5808 } 5809 5810 @Override 5811 public boolean processMessage(Message message) { 5812 logStateAndMessage(message, getClass().getSimpleName()); 5813 5814 switch(message.what) { 5815 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5816 if (mP2pSupported) { 5817 transitionTo(mWaitForP2pDisableState); 5818 } else { 5819 transitionTo(mSupplicantStoppingState); 5820 } 5821 break; 5822 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5823 loge("Connection lost, restart supplicant"); 5824 handleSupplicantConnectionLoss(true); 5825 handleNetworkDisconnect(); 5826 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5827 if (mP2pSupported) { 5828 transitionTo(mWaitForP2pDisableState); 5829 } else { 5830 transitionTo(mInitialState); 5831 } 5832 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5833 break; 5834 case WifiMonitor.SCAN_RESULTS_EVENT: 5835 case WifiMonitor.SCAN_FAILED_EVENT: 5836 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5837 closeRadioScanStats(); 5838 noteScanEnd(); 5839 setScanResults(); 5840 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5841 /* Just updated results from full scan, let apps know about this */ 5842 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5843 sendScanResultsAvailableBroadcast(scanSucceeded); 5844 } 5845 mSendScanResultsBroadcast = false; 5846 mIsScanOngoing = false; 5847 mIsFullScanOngoing = false; 5848 if (mBufferedScanMsg.size() > 0) 5849 sendMessage(mBufferedScanMsg.remove()); 5850 break; 5851 case CMD_PING_SUPPLICANT: 5852 boolean ok = mWifiNative.ping(); 5853 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5854 break; 5855 case CMD_GET_CAPABILITY_FREQ: 5856 String freqs = mWifiNative.getFreqCapability(); 5857 replyToMessage(message, message.what, freqs); 5858 break; 5859 case CMD_START_AP: 5860 /* Cannot start soft AP while in client mode */ 5861 loge("Failed to start soft AP with a running supplicant"); 5862 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5863 break; 5864 case CMD_SET_OPERATIONAL_MODE: 5865 mOperationalMode = message.arg1; 5866 mWifiConfigStore. 5867 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5868 break; 5869 case CMD_TARGET_BSSID: 5870 // Trying to associate to this BSSID 5871 if (message.obj != null) { 5872 mTargetRoamBSSID = (String) message.obj; 5873 } 5874 break; 5875 case CMD_GET_LINK_LAYER_STATS: 5876 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5877 if (stats == null) { 5878 // When firmware doesnt support link layer stats, return an empty object 5879 stats = new WifiLinkLayerStats(); 5880 } 5881 replyToMessage(message, message.what, stats); 5882 break; 5883 case CMD_SET_COUNTRY_CODE: 5884 String country = (String) message.obj; 5885 5886 final boolean persist = (message.arg2 == 1); 5887 final int sequence = message.arg1; 5888 5889 if (sequence != mCountryCodeSequence.get()) { 5890 if (DBG) log("set country code ignored due to sequnce num"); 5891 break; 5892 } 5893 if (DBG) log("set country code " + country); 5894 country = country.toUpperCase(Locale.ROOT); 5895 5896 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5897 if (mWifiNative.setCountryCode(country)) { 5898 mDriverSetCountryCode = country; 5899 } else { 5900 loge("Failed to set country code " + country); 5901 } 5902 } 5903 5904 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5905 break; 5906 default: 5907 return NOT_HANDLED; 5908 } 5909 return HANDLED; 5910 } 5911 5912 @Override 5913 public void exit() { 5914 mNetworkInfo.setIsAvailable(false); 5915 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5916 } 5917 } 5918 5919 class SupplicantStoppingState extends State { 5920 @Override 5921 public void enter() { 5922 /* Send any reset commands to supplicant before shutting it down */ 5923 handleNetworkDisconnect(); 5924 if (mDhcpStateMachine != null) { 5925 mDhcpStateMachine.doQuit(); 5926 } 5927 5928 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5929 if (suppState == null) suppState = "unknown"; 5930 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5931 if (p2pSuppState == null) p2pSuppState = "unknown"; 5932 5933 loge("SupplicantStoppingState: stopSupplicant " 5934 + " init.svc.wpa_supplicant=" + suppState 5935 + " init.svc.p2p_supplicant=" + p2pSuppState); 5936 mWifiMonitor.stopSupplicant(); 5937 5938 /* Send ourselves a delayed message to indicate failure after a wait time */ 5939 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5940 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5941 setWifiState(WIFI_STATE_DISABLING); 5942 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5943 } 5944 @Override 5945 public boolean processMessage(Message message) { 5946 logStateAndMessage(message, getClass().getSimpleName()); 5947 5948 switch(message.what) { 5949 case WifiMonitor.SUP_CONNECTION_EVENT: 5950 loge("Supplicant connection received while stopping"); 5951 break; 5952 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5953 if (DBG) log("Supplicant connection lost"); 5954 handleSupplicantConnectionLoss(false); 5955 transitionTo(mInitialState); 5956 break; 5957 case CMD_STOP_SUPPLICANT_FAILED: 5958 if (message.arg1 == mSupplicantStopFailureToken) { 5959 loge("Timed out on a supplicant stop, kill and proceed"); 5960 handleSupplicantConnectionLoss(true); 5961 transitionTo(mInitialState); 5962 } 5963 break; 5964 case CMD_START_SUPPLICANT: 5965 case CMD_STOP_SUPPLICANT: 5966 case CMD_START_AP: 5967 case CMD_STOP_AP: 5968 case CMD_START_DRIVER: 5969 case CMD_STOP_DRIVER: 5970 case CMD_SET_OPERATIONAL_MODE: 5971 case CMD_SET_COUNTRY_CODE: 5972 case CMD_SET_FREQUENCY_BAND: 5973 case CMD_START_PACKET_FILTERING: 5974 case CMD_STOP_PACKET_FILTERING: 5975 deferMessage(message); 5976 break; 5977 default: 5978 return NOT_HANDLED; 5979 } 5980 return HANDLED; 5981 } 5982 } 5983 5984 class DriverStartingState extends State { 5985 private int mTries; 5986 @Override 5987 public void enter() { 5988 mTries = 1; 5989 /* Send ourselves a delayed message to start driver a second time */ 5990 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5991 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5992 } 5993 @Override 5994 public boolean processMessage(Message message) { 5995 logStateAndMessage(message, getClass().getSimpleName()); 5996 5997 switch(message.what) { 5998 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5999 SupplicantState state = handleSupplicantStateChange(message); 6000 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6001 * a state that indicates driver has started, it is ready to 6002 * receive driver commands 6003 */ 6004 if (SupplicantState.isDriverActive(state)) { 6005 transitionTo(mDriverStartedState); 6006 } 6007 break; 6008 case CMD_DRIVER_START_TIMED_OUT: 6009 if (message.arg1 == mDriverStartToken) { 6010 if (mTries >= 2) { 6011 loge("Failed to start driver after " + mTries); 6012 transitionTo(mDriverStoppedState); 6013 } else { 6014 loge("Driver start failed, retrying"); 6015 mWakeLock.acquire(); 6016 mWifiNative.startDriver(); 6017 mWakeLock.release(); 6018 6019 ++mTries; 6020 /* Send ourselves a delayed message to start driver again */ 6021 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6022 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6023 } 6024 } 6025 break; 6026 /* Queue driver commands & connection events */ 6027 case CMD_START_DRIVER: 6028 case CMD_STOP_DRIVER: 6029 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6030 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6031 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6032 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6033 case WifiMonitor.WPS_OVERLAP_EVENT: 6034 case CMD_SET_COUNTRY_CODE: 6035 case CMD_SET_FREQUENCY_BAND: 6036 case CMD_START_PACKET_FILTERING: 6037 case CMD_STOP_PACKET_FILTERING: 6038 case CMD_START_SCAN: 6039 case CMD_DISCONNECT: 6040 case CMD_REASSOCIATE: 6041 case CMD_RECONNECT: 6042 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6043 deferMessage(message); 6044 break; 6045 case WifiMonitor.SCAN_RESULTS_EVENT: 6046 case WifiMonitor.SCAN_FAILED_EVENT: 6047 // Loose scan results obtained in Driver Starting state, they can only confuse 6048 // the state machine 6049 break; 6050 default: 6051 return NOT_HANDLED; 6052 } 6053 return HANDLED; 6054 } 6055 } 6056 6057 class DriverStartedState extends State { 6058 @Override 6059 public void enter() { 6060 6061 if (PDBG) { 6062 loge("DriverStartedState enter"); 6063 } 6064 6065 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6066 mIsRunning = true; 6067 mInDelayedStop = false; 6068 mDelayedStopCounter++; 6069 updateBatteryWorkSource(null); 6070 /** 6071 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6072 * When this mode is on, some of the low-level scan parameters used by the 6073 * driver are changed to reduce interference with bluetooth 6074 */ 6075 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6076 /* set frequency band of operation */ 6077 setFrequencyBand(); 6078 /* initialize network state */ 6079 setNetworkDetailedState(DetailedState.DISCONNECTED); 6080 6081 /* Remove any filtering on Multicast v6 at start */ 6082 mWifiNative.stopFilteringMulticastV6Packets(); 6083 6084 /* Reset Multicast v4 filtering state */ 6085 if (mFilteringMulticastV4Packets.get()) { 6086 mWifiNative.startFilteringMulticastV4Packets(); 6087 } else { 6088 mWifiNative.stopFilteringMulticastV4Packets(); 6089 } 6090 6091 mDhcpActive = false; 6092 6093 if (mOperationalMode != CONNECT_MODE) { 6094 mWifiNative.disconnect(); 6095 mWifiConfigStore.disableAllNetworks(); 6096 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6097 setWifiState(WIFI_STATE_DISABLED); 6098 } 6099 transitionTo(mScanModeState); 6100 } else { 6101 6102 // Status pulls in the current supplicant state and network connection state 6103 // events over the monitor connection. This helps framework sync up with 6104 // current supplicant state 6105 // TODO: actually check th supplicant status string and make sure the supplicant 6106 // is in disconnecte4d state. 6107 mWifiNative.status(); 6108 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6109 transitionTo(mDisconnectedState); 6110 transitionTo(mDisconnectedState); 6111 } 6112 6113 // We may have missed screen update at boot 6114 if (mScreenBroadcastReceived.get() == false) { 6115 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6116 Context.POWER_SERVICE); 6117 handleScreenStateChanged(powerManager.isScreenOn()); 6118 } else { 6119 // Set the right suspend mode settings 6120 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6121 && mUserWantsSuspendOpt.get()); 6122 } 6123 mWifiNative.setPowerSave(true); 6124 6125 if (mP2pSupported) { 6126 if (mOperationalMode == CONNECT_MODE) { 6127 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6128 } else { 6129 // P2P statemachine starts in disabled state, and is not enabled until 6130 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6131 // keep it disabled. 6132 } 6133 } 6134 6135 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6136 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6137 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6138 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6139 6140 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6141 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6142 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6143 mHalBasedPnoDriverSupported = true; 6144 } 6145 6146 // Enable link layer stats gathering 6147 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6148 6149 if (PDBG) { 6150 loge("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6151 + " feature=" + mHalFeatureSet); 6152 } 6153 } 6154 6155 @Override 6156 public boolean processMessage(Message message) { 6157 logStateAndMessage(message, getClass().getSimpleName()); 6158 6159 switch(message.what) { 6160 case CMD_START_SCAN: 6161 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6162 break; 6163 case CMD_SET_FREQUENCY_BAND: 6164 int band = message.arg1; 6165 if (DBG) log("set frequency band " + band); 6166 if (mWifiNative.setBand(band)) { 6167 6168 if (PDBG) loge("did set frequency band " + band); 6169 6170 mFrequencyBand.set(band); 6171 // Flush old data - like scan results 6172 mWifiNative.bssFlush(); 6173 // Fetch the latest scan results when frequency band is set 6174// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6175 6176 if (PDBG) loge("done set frequency band " + band); 6177 6178 } else { 6179 loge("Failed to set frequency band " + band); 6180 } 6181 break; 6182 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6183 mBluetoothConnectionActive = (message.arg1 != 6184 BluetoothAdapter.STATE_DISCONNECTED); 6185 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6186 break; 6187 case CMD_STOP_DRIVER: 6188 int mode = message.arg1; 6189 6190 /* Already doing a delayed stop */ 6191 if (mInDelayedStop) { 6192 if (DBG) log("Already in delayed stop"); 6193 break; 6194 } 6195 /* disconnect right now, but leave the driver running for a bit */ 6196 mWifiConfigStore.disableAllNetworks(); 6197 6198 mInDelayedStop = true; 6199 mDelayedStopCounter++; 6200 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6201 6202 /* send regular delayed shut down */ 6203 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6204 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 6205 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6206 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6207 DRIVER_STOP_REQUEST, driverStopIntent, 6208 PendingIntent.FLAG_UPDATE_CURRENT); 6209 6210 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6211 + mDriverStopDelayMs, mDriverStopIntent); 6212 break; 6213 case CMD_START_DRIVER: 6214 if (mInDelayedStop) { 6215 mInDelayedStop = false; 6216 mDelayedStopCounter++; 6217 mAlarmManager.cancel(mDriverStopIntent); 6218 if (DBG) log("Delayed stop ignored due to start"); 6219 if (mOperationalMode == CONNECT_MODE) { 6220 mWifiConfigStore.enableAllNetworks(); 6221 } 6222 } 6223 break; 6224 case CMD_DELAYED_STOP_DRIVER: 6225 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6226 if (message.arg1 != mDelayedStopCounter) break; 6227 if (getCurrentState() != mDisconnectedState) { 6228 mWifiNative.disconnect(); 6229 handleNetworkDisconnect(); 6230 } 6231 mWakeLock.acquire(); 6232 mWifiNative.stopDriver(); 6233 mWakeLock.release(); 6234 if (mP2pSupported) { 6235 transitionTo(mWaitForP2pDisableState); 6236 } else { 6237 transitionTo(mDriverStoppingState); 6238 } 6239 break; 6240 case CMD_START_PACKET_FILTERING: 6241 if (message.arg1 == MULTICAST_V6) { 6242 mWifiNative.startFilteringMulticastV6Packets(); 6243 } else if (message.arg1 == MULTICAST_V4) { 6244 mWifiNative.startFilteringMulticastV4Packets(); 6245 } else { 6246 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6247 } 6248 break; 6249 case CMD_STOP_PACKET_FILTERING: 6250 if (message.arg1 == MULTICAST_V6) { 6251 mWifiNative.stopFilteringMulticastV6Packets(); 6252 } else if (message.arg1 == MULTICAST_V4) { 6253 mWifiNative.stopFilteringMulticastV4Packets(); 6254 } else { 6255 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6256 } 6257 break; 6258 case CMD_SET_SUSPEND_OPT_ENABLED: 6259 if (message.arg1 == 1) { 6260 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6261 mSuspendWakeLock.release(); 6262 } else { 6263 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6264 } 6265 break; 6266 case CMD_SET_HIGH_PERF_MODE: 6267 if (message.arg1 == 1) { 6268 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6269 } else { 6270 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6271 } 6272 break; 6273 case CMD_ENABLE_TDLS: 6274 if (message.obj != null) { 6275 String remoteAddress = (String) message.obj; 6276 boolean enable = (message.arg1 == 1); 6277 mWifiNative.startTdls(remoteAddress, enable); 6278 } 6279 break; 6280 case WifiMonitor.ANQP_DONE_EVENT: 6281 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6282 break; 6283 default: 6284 return NOT_HANDLED; 6285 } 6286 return HANDLED; 6287 } 6288 @Override 6289 public void exit() { 6290 6291 mWifiLogger.stopLogging(); 6292 6293 mIsRunning = false; 6294 updateBatteryWorkSource(null); 6295 mScanResults = new ArrayList<>(); 6296 6297 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6298 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6299 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6300 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6301 noteScanEnd(); // wrap up any pending request. 6302 mBufferedScanMsg.clear(); 6303 } 6304 } 6305 6306 class WaitForP2pDisableState extends State { 6307 private State mTransitionToState; 6308 @Override 6309 public void enter() { 6310 switch (getCurrentMessage().what) { 6311 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6312 mTransitionToState = mInitialState; 6313 break; 6314 case CMD_DELAYED_STOP_DRIVER: 6315 mTransitionToState = mDriverStoppingState; 6316 break; 6317 case CMD_STOP_SUPPLICANT: 6318 mTransitionToState = mSupplicantStoppingState; 6319 break; 6320 default: 6321 mTransitionToState = mDriverStoppingState; 6322 break; 6323 } 6324 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6325 } 6326 @Override 6327 public boolean processMessage(Message message) { 6328 logStateAndMessage(message, getClass().getSimpleName()); 6329 6330 switch(message.what) { 6331 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6332 transitionTo(mTransitionToState); 6333 break; 6334 /* Defer wifi start/shut and driver commands */ 6335 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6336 case CMD_START_SUPPLICANT: 6337 case CMD_STOP_SUPPLICANT: 6338 case CMD_START_AP: 6339 case CMD_STOP_AP: 6340 case CMD_START_DRIVER: 6341 case CMD_STOP_DRIVER: 6342 case CMD_SET_OPERATIONAL_MODE: 6343 case CMD_SET_COUNTRY_CODE: 6344 case CMD_SET_FREQUENCY_BAND: 6345 case CMD_START_PACKET_FILTERING: 6346 case CMD_STOP_PACKET_FILTERING: 6347 case CMD_START_SCAN: 6348 case CMD_DISCONNECT: 6349 case CMD_REASSOCIATE: 6350 case CMD_RECONNECT: 6351 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6352 deferMessage(message); 6353 break; 6354 default: 6355 return NOT_HANDLED; 6356 } 6357 return HANDLED; 6358 } 6359 } 6360 6361 class DriverStoppingState extends State { 6362 @Override 6363 public boolean processMessage(Message message) { 6364 logStateAndMessage(message, getClass().getSimpleName()); 6365 6366 switch(message.what) { 6367 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6368 SupplicantState state = handleSupplicantStateChange(message); 6369 if (state == SupplicantState.INTERFACE_DISABLED) { 6370 transitionTo(mDriverStoppedState); 6371 } 6372 break; 6373 /* Queue driver commands */ 6374 case CMD_START_DRIVER: 6375 case CMD_STOP_DRIVER: 6376 case CMD_SET_COUNTRY_CODE: 6377 case CMD_SET_FREQUENCY_BAND: 6378 case CMD_START_PACKET_FILTERING: 6379 case CMD_STOP_PACKET_FILTERING: 6380 case CMD_START_SCAN: 6381 case CMD_DISCONNECT: 6382 case CMD_REASSOCIATE: 6383 case CMD_RECONNECT: 6384 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6385 deferMessage(message); 6386 break; 6387 default: 6388 return NOT_HANDLED; 6389 } 6390 return HANDLED; 6391 } 6392 } 6393 6394 class DriverStoppedState extends State { 6395 @Override 6396 public boolean processMessage(Message message) { 6397 logStateAndMessage(message, getClass().getSimpleName()); 6398 switch (message.what) { 6399 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6400 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6401 SupplicantState state = stateChangeResult.state; 6402 // A WEXT bug means that we can be back to driver started state 6403 // unexpectedly 6404 if (SupplicantState.isDriverActive(state)) { 6405 transitionTo(mDriverStartedState); 6406 } 6407 break; 6408 case CMD_START_DRIVER: 6409 mWakeLock.acquire(); 6410 mWifiNative.startDriver(); 6411 mWakeLock.release(); 6412 transitionTo(mDriverStartingState); 6413 break; 6414 default: 6415 return NOT_HANDLED; 6416 } 6417 return HANDLED; 6418 } 6419 } 6420 6421 class ScanModeState extends State { 6422 private int mLastOperationMode; 6423 @Override 6424 public void enter() { 6425 mLastOperationMode = mOperationalMode; 6426 } 6427 @Override 6428 public boolean processMessage(Message message) { 6429 logStateAndMessage(message, getClass().getSimpleName()); 6430 6431 switch(message.what) { 6432 case CMD_SET_OPERATIONAL_MODE: 6433 if (message.arg1 == CONNECT_MODE) { 6434 6435 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6436 setWifiState(WIFI_STATE_ENABLED); 6437 // Load and re-enable networks when going back to enabled state 6438 // This is essential for networks to show up after restore 6439 mWifiConfigStore.loadAndEnableAllNetworks(); 6440 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6441 } else { 6442 mWifiConfigStore.enableAllNetworks(); 6443 } 6444 6445 // Try autojoining with recent network already present in the cache 6446 // If none are found then trigger a scan which will trigger autojoin 6447 // upon reception of scan results event 6448 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6449 startScan(ENABLE_WIFI, 0, null, null); 6450 } 6451 6452 // Loose last selection choice since user toggled WiFi 6453 mWifiConfigStore. 6454 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6455 6456 mOperationalMode = CONNECT_MODE; 6457 transitionTo(mDisconnectedState); 6458 } else { 6459 // Nothing to do 6460 return HANDLED; 6461 } 6462 break; 6463 // Handle scan. All the connection related commands are 6464 // handled only in ConnectModeState 6465 case CMD_START_SCAN: 6466 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6467 break; 6468 default: 6469 return NOT_HANDLED; 6470 } 6471 return HANDLED; 6472 } 6473 } 6474 6475 6476 String smToString(Message message) { 6477 return smToString(message.what); 6478 } 6479 6480 String smToString(int what) { 6481 String s = "unknown"; 6482 switch (what) { 6483 case WifiMonitor.DRIVER_HUNG_EVENT: 6484 s = "DRIVER_HUNG_EVENT"; 6485 break; 6486 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6487 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6488 break; 6489 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6490 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6491 break; 6492 case CMD_SET_FREQUENCY_BAND: 6493 s = "CMD_SET_FREQUENCY_BAND"; 6494 break; 6495 case CMD_DELAYED_NETWORK_DISCONNECT: 6496 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6497 break; 6498 case CMD_TEST_NETWORK_DISCONNECT: 6499 s = "CMD_TEST_NETWORK_DISCONNECT"; 6500 break; 6501 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6502 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6503 break; 6504 case CMD_DISABLE_EPHEMERAL_NETWORK: 6505 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6506 break; 6507 case CMD_START_DRIVER: 6508 s = "CMD_START_DRIVER"; 6509 break; 6510 case CMD_STOP_DRIVER: 6511 s = "CMD_STOP_DRIVER"; 6512 break; 6513 case CMD_STOP_SUPPLICANT: 6514 s = "CMD_STOP_SUPPLICANT"; 6515 break; 6516 case CMD_STOP_SUPPLICANT_FAILED: 6517 s = "CMD_STOP_SUPPLICANT_FAILED"; 6518 break; 6519 case CMD_START_SUPPLICANT: 6520 s = "CMD_START_SUPPLICANT"; 6521 break; 6522 case CMD_REQUEST_AP_CONFIG: 6523 s = "CMD_REQUEST_AP_CONFIG"; 6524 break; 6525 case CMD_RESPONSE_AP_CONFIG: 6526 s = "CMD_RESPONSE_AP_CONFIG"; 6527 break; 6528 case CMD_TETHER_STATE_CHANGE: 6529 s = "CMD_TETHER_STATE_CHANGE"; 6530 break; 6531 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6532 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6533 break; 6534 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6535 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6536 break; 6537 case CMD_ADD_OR_UPDATE_NETWORK: 6538 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6539 break; 6540 case CMD_REMOVE_NETWORK: 6541 s = "CMD_REMOVE_NETWORK"; 6542 break; 6543 case CMD_ENABLE_NETWORK: 6544 s = "CMD_ENABLE_NETWORK"; 6545 break; 6546 case CMD_ENABLE_ALL_NETWORKS: 6547 s = "CMD_ENABLE_ALL_NETWORKS"; 6548 break; 6549 case CMD_AUTO_CONNECT: 6550 s = "CMD_AUTO_CONNECT"; 6551 break; 6552 case CMD_AUTO_ROAM: 6553 s = "CMD_AUTO_ROAM"; 6554 break; 6555 case CMD_AUTO_SAVE_NETWORK: 6556 s = "CMD_AUTO_SAVE_NETWORK"; 6557 break; 6558 case CMD_BOOT_COMPLETED: 6559 s = "CMD_BOOT_COMPLETED"; 6560 break; 6561 case DhcpStateMachine.CMD_START_DHCP: 6562 s = "CMD_START_DHCP"; 6563 break; 6564 case DhcpStateMachine.CMD_STOP_DHCP: 6565 s = "CMD_STOP_DHCP"; 6566 break; 6567 case DhcpStateMachine.CMD_RENEW_DHCP: 6568 s = "CMD_RENEW_DHCP"; 6569 break; 6570 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6571 s = "CMD_PRE_DHCP_ACTION"; 6572 break; 6573 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6574 s = "CMD_POST_DHCP_ACTION"; 6575 break; 6576 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6577 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6578 break; 6579 case DhcpStateMachine.CMD_ON_QUIT: 6580 s = "CMD_ON_QUIT"; 6581 break; 6582 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6583 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6584 break; 6585 case WifiManager.DISABLE_NETWORK: 6586 s = "WifiManager.DISABLE_NETWORK"; 6587 break; 6588 case CMD_BLACKLIST_NETWORK: 6589 s = "CMD_BLACKLIST_NETWORK"; 6590 break; 6591 case CMD_CLEAR_BLACKLIST: 6592 s = "CMD_CLEAR_BLACKLIST"; 6593 break; 6594 case CMD_SAVE_CONFIG: 6595 s = "CMD_SAVE_CONFIG"; 6596 break; 6597 case CMD_GET_CONFIGURED_NETWORKS: 6598 s = "CMD_GET_CONFIGURED_NETWORKS"; 6599 break; 6600 case CMD_GET_SUPPORTED_FEATURES: 6601 s = "CMD_GET_SUPPORTED_FEATURES"; 6602 break; 6603 case CMD_UNWANTED_NETWORK: 6604 s = "CMD_UNWANTED_NETWORK"; 6605 break; 6606 case CMD_NETWORK_STATUS: 6607 s = "CMD_NETWORK_STATUS"; 6608 break; 6609 case CMD_GET_LINK_LAYER_STATS: 6610 s = "CMD_GET_LINK_LAYER_STATS"; 6611 break; 6612 case CMD_GET_MATCHING_CONFIG: 6613 s = "CMD_GET_MATCHING_CONFIG"; 6614 break; 6615 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6616 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6617 break; 6618 case CMD_DISCONNECT: 6619 s = "CMD_DISCONNECT"; 6620 break; 6621 case CMD_RECONNECT: 6622 s = "CMD_RECONNECT"; 6623 break; 6624 case CMD_REASSOCIATE: 6625 s = "CMD_REASSOCIATE"; 6626 break; 6627 case CMD_GET_CONNECTION_STATISTICS: 6628 s = "CMD_GET_CONNECTION_STATISTICS"; 6629 break; 6630 case CMD_SET_HIGH_PERF_MODE: 6631 s = "CMD_SET_HIGH_PERF_MODE"; 6632 break; 6633 case CMD_SET_COUNTRY_CODE: 6634 s = "CMD_SET_COUNTRY_CODE"; 6635 break; 6636 case CMD_ENABLE_RSSI_POLL: 6637 s = "CMD_ENABLE_RSSI_POLL"; 6638 break; 6639 case CMD_RSSI_POLL: 6640 s = "CMD_RSSI_POLL"; 6641 break; 6642 case CMD_START_PACKET_FILTERING: 6643 s = "CMD_START_PACKET_FILTERING"; 6644 break; 6645 case CMD_STOP_PACKET_FILTERING: 6646 s = "CMD_STOP_PACKET_FILTERING"; 6647 break; 6648 case CMD_SET_SUSPEND_OPT_ENABLED: 6649 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6650 break; 6651 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6652 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6653 break; 6654 case CMD_UPDATE_LINKPROPERTIES: 6655 s = "CMD_UPDATE_LINKPROPERTIES"; 6656 break; 6657 case CMD_RELOAD_TLS_AND_RECONNECT: 6658 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6659 break; 6660 case WifiManager.CONNECT_NETWORK: 6661 s = "CONNECT_NETWORK"; 6662 break; 6663 case WifiManager.SAVE_NETWORK: 6664 s = "SAVE_NETWORK"; 6665 break; 6666 case WifiManager.FORGET_NETWORK: 6667 s = "FORGET_NETWORK"; 6668 break; 6669 case WifiMonitor.SUP_CONNECTION_EVENT: 6670 s = "SUP_CONNECTION_EVENT"; 6671 break; 6672 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6673 s = "SUP_DISCONNECTION_EVENT"; 6674 break; 6675 case WifiMonitor.SCAN_RESULTS_EVENT: 6676 s = "SCAN_RESULTS_EVENT"; 6677 break; 6678 case WifiMonitor.SCAN_FAILED_EVENT: 6679 s = "SCAN_FAILED_EVENT"; 6680 break; 6681 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6682 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6683 break; 6684 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6685 s = "AUTHENTICATION_FAILURE_EVENT"; 6686 break; 6687 case WifiMonitor.SSID_TEMP_DISABLED: 6688 s = "SSID_TEMP_DISABLED"; 6689 break; 6690 case WifiMonitor.SSID_REENABLED: 6691 s = "SSID_REENABLED"; 6692 break; 6693 case WifiMonitor.WPS_SUCCESS_EVENT: 6694 s = "WPS_SUCCESS_EVENT"; 6695 break; 6696 case WifiMonitor.WPS_FAIL_EVENT: 6697 s = "WPS_FAIL_EVENT"; 6698 break; 6699 case WifiMonitor.SUP_REQUEST_IDENTITY: 6700 s = "SUP_REQUEST_IDENTITY"; 6701 break; 6702 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6703 s = "NETWORK_CONNECTION_EVENT"; 6704 break; 6705 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6706 s = "NETWORK_DISCONNECTION_EVENT"; 6707 break; 6708 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6709 s = "ASSOCIATION_REJECTION_EVENT"; 6710 break; 6711 case WifiMonitor.ANQP_DONE_EVENT: 6712 s = "WifiMonitor.ANQP_DONE_EVENT"; 6713 break; 6714 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6715 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6716 break; 6717 case WifiMonitor.HS20_DEAUTH_EVENT: 6718 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6719 break; 6720 case WifiMonitor.GAS_QUERY_START_EVENT: 6721 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6722 break; 6723 case CMD_SET_OPERATIONAL_MODE: 6724 s = "CMD_SET_OPERATIONAL_MODE"; 6725 break; 6726 case CMD_START_SCAN: 6727 s = "CMD_START_SCAN"; 6728 break; 6729 case CMD_DISABLE_P2P_RSP: 6730 s = "CMD_DISABLE_P2P_RSP"; 6731 break; 6732 case CMD_DISABLE_P2P_REQ: 6733 s = "CMD_DISABLE_P2P_REQ"; 6734 break; 6735 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6736 s = "GOOD_LINK_DETECTED"; 6737 break; 6738 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6739 s = "POOR_LINK_DETECTED"; 6740 break; 6741 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6742 s = "GROUP_CREATING_TIMED_OUT"; 6743 break; 6744 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6745 s = "P2P_CONNECTION_CHANGED"; 6746 break; 6747 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6748 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6749 break; 6750 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6751 s = "P2P.SET_MIRACAST_MODE"; 6752 break; 6753 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6754 s = "P2P.BLOCK_DISCOVERY"; 6755 break; 6756 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6757 s = "P2P.SET_COUNTRY_CODE"; 6758 break; 6759 case WifiManager.CANCEL_WPS: 6760 s = "CANCEL_WPS"; 6761 break; 6762 case WifiManager.CANCEL_WPS_FAILED: 6763 s = "CANCEL_WPS_FAILED"; 6764 break; 6765 case WifiManager.CANCEL_WPS_SUCCEDED: 6766 s = "CANCEL_WPS_SUCCEDED"; 6767 break; 6768 case WifiManager.START_WPS: 6769 s = "START_WPS"; 6770 break; 6771 case WifiManager.START_WPS_SUCCEEDED: 6772 s = "START_WPS_SUCCEEDED"; 6773 break; 6774 case WifiManager.WPS_FAILED: 6775 s = "WPS_FAILED"; 6776 break; 6777 case WifiManager.WPS_COMPLETED: 6778 s = "WPS_COMPLETED"; 6779 break; 6780 case WifiManager.RSSI_PKTCNT_FETCH: 6781 s = "RSSI_PKTCNT_FETCH"; 6782 break; 6783 case CMD_IP_CONFIGURATION_LOST: 6784 s = "CMD_IP_CONFIGURATION_LOST"; 6785 break; 6786 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6787 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6788 break; 6789 case CMD_IP_REACHABILITY_LOST: 6790 s = "CMD_IP_REACHABILITY_LOST"; 6791 break; 6792 case CMD_STATIC_IP_SUCCESS: 6793 s = "CMD_STATIC_IP_SUCCESSFUL"; 6794 break; 6795 case CMD_STATIC_IP_FAILURE: 6796 s = "CMD_STATIC_IP_FAILURE"; 6797 break; 6798 case DhcpStateMachine.DHCP_SUCCESS: 6799 s = "DHCP_SUCCESS"; 6800 break; 6801 case DhcpStateMachine.DHCP_FAILURE: 6802 s = "DHCP_FAILURE"; 6803 break; 6804 case CMD_TARGET_BSSID: 6805 s = "CMD_TARGET_BSSID"; 6806 break; 6807 case CMD_ASSOCIATED_BSSID: 6808 s = "CMD_ASSOCIATED_BSSID"; 6809 break; 6810 case CMD_REMOVE_APP_CONFIGURATIONS: 6811 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6812 break; 6813 case CMD_REMOVE_USER_CONFIGURATIONS: 6814 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6815 break; 6816 case CMD_ROAM_WATCHDOG_TIMER: 6817 s = "CMD_ROAM_WATCHDOG_TIMER"; 6818 break; 6819 case CMD_SCREEN_STATE_CHANGED: 6820 s = "CMD_SCREEN_STATE_CHANGED"; 6821 break; 6822 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6823 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6824 break; 6825 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6826 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6827 break; 6828 case CMD_STARTED_PNO_DBG: 6829 s = "CMD_STARTED_PNO_DBG"; 6830 break; 6831 case CMD_STARTED_GSCAN_DBG: 6832 s = "CMD_STARTED_GSCAN_DBG"; 6833 break; 6834 case CMD_PNO_NETWORK_FOUND: 6835 s = "CMD_PNO_NETWORK_FOUND"; 6836 break; 6837 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6838 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6839 break; 6840 default: 6841 s = "what:" + Integer.toString(what); 6842 break; 6843 } 6844 return s; 6845 } 6846 6847 void registerConnected() { 6848 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6849 long now_ms = System.currentTimeMillis(); 6850 // We are switching away from this configuration, 6851 // hence record the time we were connected last 6852 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6853 if (config != null) { 6854 config.lastConnected = System.currentTimeMillis(); 6855 config.autoJoinBailedDueToLowRssi = false; 6856 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6857 config.numConnectionFailures = 0; 6858 config.numIpConfigFailures = 0; 6859 config.numAuthFailures = 0; 6860 config.numAssociation++; 6861 } 6862 mBadLinkspeedcount = 0; 6863 } 6864 } 6865 6866 void registerDisconnected() { 6867 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6868 long now_ms = System.currentTimeMillis(); 6869 // We are switching away from this configuration, 6870 // hence record the time we were connected last 6871 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6872 if (config != null) { 6873 config.lastDisconnected = System.currentTimeMillis(); 6874 if (config.ephemeral) { 6875 // Remove ephemeral WifiConfigurations from file 6876 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6877 } 6878 } 6879 } 6880 } 6881 6882 void noteWifiDisabledWhileAssociated() { 6883 // We got disabled by user while we were associated, make note of it 6884 int rssi = mWifiInfo.getRssi(); 6885 WifiConfiguration config = getCurrentWifiConfiguration(); 6886 if (getCurrentState() == mConnectedState 6887 && rssi != WifiInfo.INVALID_RSSI 6888 && config != null) { 6889 boolean is24GHz = mWifiInfo.is24GHz(); 6890 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6891 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6892 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6893 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6894 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6895 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6896 if (isBadRSSI) { 6897 // Take note that we got disabled while RSSI was Bad 6898 config.numUserTriggeredWifiDisableLowRSSI++; 6899 } else if (isLowRSSI) { 6900 // Take note that we got disabled while RSSI was Low 6901 config.numUserTriggeredWifiDisableBadRSSI++; 6902 } else if (!isHighRSSI) { 6903 // Take note that we got disabled while RSSI was Not high 6904 config.numUserTriggeredWifiDisableNotHighRSSI++; 6905 } 6906 } 6907 } 6908 6909 WifiConfiguration getCurrentWifiConfiguration() { 6910 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6911 return null; 6912 } 6913 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6914 } 6915 6916 ScanResult getCurrentScanResult() { 6917 WifiConfiguration config = getCurrentWifiConfiguration(); 6918 if (config == null) { 6919 return null; 6920 } 6921 String BSSID = mWifiInfo.getBSSID(); 6922 if (BSSID == null) { 6923 BSSID = mTargetRoamBSSID; 6924 } 6925 ScanDetailCache scanDetailCache = 6926 mWifiConfigStore.getScanDetailCache(config); 6927 6928 if (scanDetailCache == null) { 6929 return null; 6930 } 6931 6932 return scanDetailCache.get(BSSID); 6933 } 6934 6935 String getCurrentBSSID() { 6936 if (linkDebouncing) { 6937 return null; 6938 } 6939 return mLastBssid; 6940 } 6941 6942 class ConnectModeState extends State { 6943 6944 @Override 6945 public void enter() { 6946 connectScanningService(); 6947 } 6948 6949 @Override 6950 public boolean processMessage(Message message) { 6951 WifiConfiguration config; 6952 int netId; 6953 boolean ok; 6954 boolean didDisconnect; 6955 String bssid; 6956 String ssid; 6957 NetworkUpdateResult result; 6958 logStateAndMessage(message, getClass().getSimpleName()); 6959 6960 switch (message.what) { 6961 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6962 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6963 didBlackListBSSID = false; 6964 bssid = (String) message.obj; 6965 if (bssid == null || TextUtils.isEmpty(bssid)) { 6966 // If BSSID is null, use the target roam BSSID 6967 bssid = mTargetRoamBSSID; 6968 } 6969 if (bssid != null) { 6970 // If we have a BSSID, tell configStore to black list it 6971 synchronized(mScanResultCache) { 6972 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6973 (mLastNetworkId, bssid, false); 6974 } 6975 } 6976 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6977 break; 6978 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6979 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6980 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6981 break; 6982 case WifiMonitor.SSID_TEMP_DISABLED: 6983 case WifiMonitor.SSID_REENABLED: 6984 String substr = (String) message.obj; 6985 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6986 "temp-disabled" : "re-enabled"; 6987 loge("ConnectModeState SSID state=" + en + " nid=" 6988 + Integer.toString(message.arg1) + " [" + substr + "]"); 6989 synchronized(mScanResultCache) { 6990 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6991 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6992 } 6993 break; 6994 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6995 SupplicantState state = handleSupplicantStateChange(message); 6996 // A driver/firmware hang can now put the interface in a down state. 6997 // We detect the interface going down and recover from it 6998 if (!SupplicantState.isDriverActive(state)) { 6999 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7000 handleNetworkDisconnect(); 7001 } 7002 log("Detected an interface down, restart driver"); 7003 transitionTo(mDriverStoppedState); 7004 sendMessage(CMD_START_DRIVER); 7005 break; 7006 } 7007 7008 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7009 // when authentication times out after a successful connection, 7010 // we can figure this from the supplicant state. If supplicant 7011 // state is DISCONNECTED, but the mNetworkInfo says we are not 7012 // disconnected, we need to handle a disconnection 7013 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7014 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7015 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7016 handleNetworkDisconnect(); 7017 transitionTo(mDisconnectedState); 7018 } 7019 7020 // If we have COMPLETED a connection to a BSSID, start doing 7021 // DNAv4/DNAv6 -style probing for on-link neighbors of 7022 // interest (e.g. routers); harmless if none are configured. 7023 if (state == SupplicantState.COMPLETED) { 7024 if (mIpReachabilityMonitor != null) { 7025 mIpReachabilityMonitor.probeAll(); 7026 } 7027 } 7028 break; 7029 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7030 if (message.arg1 == 1) { 7031 mWifiNative.disconnect(); 7032 mTemporarilyDisconnectWifi = true; 7033 } else { 7034 mWifiNative.reconnect(); 7035 mTemporarilyDisconnectWifi = false; 7036 } 7037 break; 7038 case CMD_ADD_OR_UPDATE_NETWORK: 7039 config = (WifiConfiguration) message.obj; 7040 7041 if (!recordUidIfAuthorized(config, message.sendingUid, 7042 /* onlyAnnotate */ false)) { 7043 loge("Not authorized to update network " 7044 + " config=" + config.SSID 7045 + " cnid=" + config.networkId 7046 + " uid=" + message.sendingUid); 7047 replyToMessage(message, message.what, FAILURE); 7048 break; 7049 } 7050 7051 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7052 if (res < 0) { 7053 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7054 } else { 7055 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7056 if (curConfig != null && config != null) { 7057 if (curConfig.priority < config.priority 7058 && config.status == WifiConfiguration.Status.ENABLED) { 7059 // Interpret this as a connect attempt 7060 // Set the last selected configuration so as to allow the system to 7061 // stick the last user choice without persisting the choice 7062 mWifiConfigStore.setLastSelectedConfiguration(res); 7063 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7064 mWifiConfigStore.writeKnownNetworkHistory(false); 7065 7066 // Remember time of last connection attempt 7067 lastConnectAttempt = System.currentTimeMillis(); 7068 7069 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7070 7071 // As a courtesy to the caller, trigger a scan now 7072 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7073 } 7074 } 7075 } 7076 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7077 break; 7078 case CMD_REMOVE_NETWORK: 7079 netId = message.arg1; 7080 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7081 /* onlyAnnotate */ false)) { 7082 loge("Not authorized to remove network " 7083 + " cnid=" + netId 7084 + " uid=" + message.sendingUid); 7085 replyToMessage(message, message.what, FAILURE); 7086 break; 7087 } 7088 7089 ok = mWifiConfigStore.removeNetwork(message.arg1); 7090 if (!ok) { 7091 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7092 } 7093 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7094 break; 7095 case CMD_ENABLE_NETWORK: 7096 boolean others = message.arg2 == 1; 7097 // Tell autojoin the user did try to select to that network 7098 // However, do NOT persist the choice by bumping the priority of the network 7099 if (others) { 7100 mWifiAutoJoinController. 7101 updateConfigurationHistory(message.arg1, true, false); 7102 // Set the last selected configuration so as to allow the system to 7103 // stick the last user choice without persisting the choice 7104 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 7105 7106 // Remember time of last connection attempt 7107 lastConnectAttempt = System.currentTimeMillis(); 7108 7109 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7110 } 7111 // Cancel auto roam requests 7112 autoRoamSetBSSID(message.arg1, "any"); 7113 7114 int uid = message.sendingUid; 7115 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1, uid); 7116 if (!ok) { 7117 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7118 } 7119 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7120 break; 7121 case CMD_ENABLE_ALL_NETWORKS: 7122 long time = android.os.SystemClock.elapsedRealtime(); 7123 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7124 mWifiConfigStore.enableAllNetworks(); 7125 mLastEnableAllNetworksTime = time; 7126 } 7127 break; 7128 case WifiManager.DISABLE_NETWORK: 7129 if (mWifiConfigStore.disableNetwork(message.arg1, 7130 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7131 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7132 } else { 7133 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7134 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7135 WifiManager.ERROR); 7136 } 7137 break; 7138 case CMD_DISABLE_EPHEMERAL_NETWORK: 7139 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7140 if (config != null) { 7141 if (config.networkId == mLastNetworkId) { 7142 // Disconnect and let autojoin reselect a new network 7143 sendMessage(CMD_DISCONNECT); 7144 } 7145 } 7146 break; 7147 case CMD_BLACKLIST_NETWORK: 7148 mWifiConfigStore.blackListBssid((String) message.obj); 7149 break; 7150 case CMD_CLEAR_BLACKLIST: 7151 mWifiConfigStore.clearBssidBlacklist(); 7152 break; 7153 case CMD_SAVE_CONFIG: 7154 ok = mWifiConfigStore.saveConfig(); 7155 7156 if (DBG) loge("wifistatemachine did save config " + ok); 7157 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7158 7159 // Inform the backup manager about a data change 7160 IBackupManager ibm = IBackupManager.Stub.asInterface( 7161 ServiceManager.getService(Context.BACKUP_SERVICE)); 7162 if (ibm != null) { 7163 try { 7164 ibm.dataChanged("com.android.providers.settings"); 7165 } catch (Exception e) { 7166 // Try again later 7167 } 7168 } 7169 break; 7170 case CMD_GET_CONFIGURED_NETWORKS: 7171 replyToMessage(message, message.what, 7172 mWifiConfigStore.getConfiguredNetworks()); 7173 break; 7174 case WifiMonitor.SUP_REQUEST_IDENTITY: 7175 int networkId = message.arg2; 7176 boolean identitySent = false; 7177 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7178 7179 if (targetWificonfiguration != null 7180 && targetWificonfiguration.enterpriseConfig != null) { 7181 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7182 } 7183 7184 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7185 if (targetWificonfiguration != null 7186 && targetWificonfiguration.networkId == networkId 7187 && targetWificonfiguration.allowedKeyManagement 7188 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7189 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7190 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7191 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7192 TelephonyManager tm = (TelephonyManager) 7193 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7194 if (tm != null) { 7195 String imsi = tm.getSubscriberId(); 7196 String mccMnc = ""; 7197 7198 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7199 mccMnc = tm.getSimOperator(); 7200 7201 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7202 7203 if (!identity.isEmpty()) { 7204 mWifiNative.simIdentityResponse(networkId, identity); 7205 identitySent = true; 7206 } 7207 } 7208 } 7209 if (!identitySent) { 7210 // Supplicant lacks credentials to connect to that network, hence black list 7211 ssid = (String) message.obj; 7212 if (targetWificonfiguration != null && ssid != null 7213 && targetWificonfiguration.SSID != null 7214 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7215 mWifiConfigStore.handleSSIDStateChange( 7216 targetWificonfiguration.networkId, false, 7217 "AUTH_FAILED no identity", null); 7218 } 7219 // Disconnect now, as we don't have any way to fullfill 7220 // the supplicant request. 7221 mWifiConfigStore.setLastSelectedConfiguration( 7222 WifiConfiguration.INVALID_NETWORK_ID); 7223 mWifiNative.disconnect(); 7224 } 7225 break; 7226 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7227 logd("Received SUP_REQUEST_SIM_AUTH"); 7228 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7229 if (requestData != null) { 7230 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7231 handleGsmAuthRequest(requestData); 7232 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7233 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7234 handle3GAuthRequest(requestData); 7235 } 7236 } else { 7237 loge("Invalid sim auth request"); 7238 } 7239 break; 7240 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7241 replyToMessage(message, message.what, 7242 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7243 break; 7244 case CMD_GET_MATCHING_CONFIG: 7245 replyToMessage(message, message.what, 7246 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7247 break; 7248 /* Do a redundant disconnect without transition */ 7249 case CMD_DISCONNECT: 7250 mWifiConfigStore.setLastSelectedConfiguration 7251 (WifiConfiguration.INVALID_NETWORK_ID); 7252 mWifiNative.disconnect(); 7253 break; 7254 case CMD_RECONNECT: 7255 mWifiAutoJoinController.attemptAutoJoin(); 7256 break; 7257 case CMD_REASSOCIATE: 7258 lastConnectAttempt = System.currentTimeMillis(); 7259 mWifiNative.reassociate(); 7260 break; 7261 case CMD_RELOAD_TLS_AND_RECONNECT: 7262 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7263 logd("Reconnecting to give a chance to un-connected TLS networks"); 7264 mWifiNative.disconnect(); 7265 lastConnectAttempt = System.currentTimeMillis(); 7266 mWifiNative.reconnect(); 7267 } 7268 break; 7269 case CMD_AUTO_ROAM: 7270 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7271 return HANDLED; 7272 case CMD_AUTO_CONNECT: 7273 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7274 * associated status to the STATUS command but somehow-someplace still thinks 7275 * it is associated and thus will ignore select/reconnect command with 7276 * following message: 7277 * "Already associated with the selected network - do nothing" 7278 * 7279 * Hence, sends a disconnect to supplicant first. 7280 */ 7281 didDisconnect = false; 7282 if (getCurrentState() != mDisconnectedState) { 7283 /** Supplicant will ignore the reconnect if we are currently associated, 7284 * hence trigger a disconnect 7285 */ 7286 didDisconnect = true; 7287 mWifiNative.disconnect(); 7288 } 7289 7290 /* connect command coming from auto-join */ 7291 config = (WifiConfiguration) message.obj; 7292 netId = message.arg1; 7293 int roam = message.arg2; 7294 loge("CMD_AUTO_CONNECT sup state " 7295 + mSupplicantStateTracker.getSupplicantStateName() 7296 + " my state " + getCurrentState().getName() 7297 + " nid=" + Integer.toString(netId) 7298 + " roam=" + Integer.toString(roam)); 7299 if (config == null) { 7300 loge("AUTO_CONNECT and no config, bail out..."); 7301 break; 7302 } 7303 7304 /* Make sure we cancel any previous roam request */ 7305 autoRoamSetBSSID(netId, config.BSSID); 7306 7307 /* Save the network config */ 7308 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 7309 + " nid=" + Integer.toString(netId)); 7310 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7311 netId = result.getNetworkId(); 7312 loge("CMD_AUTO_CONNECT did save config -> " 7313 + " nid=" + Integer.toString(netId)); 7314 7315 // Since we updated the config,read it back from config store: 7316 config = mWifiConfigStore.getWifiConfiguration(netId); 7317 if (config == null) { 7318 loge("CMD_AUTO_CONNECT couldnt update the config, got null config"); 7319 break; 7320 } 7321 if (netId != config.networkId) { 7322 loge("CMD_AUTO_CONNECT couldnt update the config, want" 7323 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7324 break; 7325 } 7326 7327 if (deferForUserInput(message, netId, false)) { 7328 break; 7329 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7330 WifiConfiguration.USER_BANNED) { 7331 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7332 WifiManager.NOT_AUTHORIZED); 7333 break; 7334 } 7335 7336 // Make sure the network is enabled, since supplicant will not reenable it 7337 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7338 7339 // If we're autojoining a network that the user or an app explicitly selected, 7340 // keep track of the UID that selected it. 7341 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7342 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7343 7344 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7345 lastConnectUid) && mWifiNative.reconnect()) { 7346 lastConnectAttempt = System.currentTimeMillis(); 7347 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7348 config = mWifiConfigStore.getWifiConfiguration(netId); 7349 if (config != null 7350 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7351 // If we autojoined a different config than the user selected one, 7352 // it means we could not see the last user selection, 7353 // or that the last user selection was faulty and ended up blacklisted 7354 // for some reason (in which case the user is notified with an error 7355 // message in the Wifi picker), and thus we managed to auto-join away 7356 // from the selected config. -> in that case we need to forget 7357 // the selection because we don't want to abruptly switch back to it. 7358 // 7359 // Note that the user selection is also forgotten after a period of time 7360 // during which the device has been disconnected. 7361 // The default value is 30 minutes : see the code path at bottom of 7362 // setScanResults() function. 7363 mWifiConfigStore. 7364 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7365 } 7366 mAutoRoaming = roam; 7367 if (isRoaming() || linkDebouncing) { 7368 transitionTo(mRoamingState); 7369 } else if (didDisconnect) { 7370 transitionTo(mDisconnectingState); 7371 } else { 7372 /* Already in disconnected state, nothing to change */ 7373 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7374 int delay = 60 * 1000; 7375 if (VDBG) { 7376 loge("Starting PNO alarm: " + delay); 7377 } 7378 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7379 System.currentTimeMillis() + delay, 7380 mPnoIntent); 7381 } 7382 mRestartAutoJoinOffloadCounter++; 7383 } 7384 } else { 7385 loge("Failed to connect config: " + config + " netId: " + netId); 7386 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7387 WifiManager.ERROR); 7388 break; 7389 } 7390 break; 7391 case CMD_REMOVE_APP_CONFIGURATIONS: 7392 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7393 break; 7394 case CMD_REMOVE_USER_CONFIGURATIONS: 7395 mWifiConfigStore.removeNetworksForUser(message.arg1); 7396 break; 7397 case WifiManager.CONNECT_NETWORK: 7398 /** 7399 * The connect message can contain a network id passed as arg1 on message or 7400 * or a config passed as obj on message. 7401 * For a new network, a config is passed to create and connect. 7402 * For an existing network, a network id is passed 7403 */ 7404 netId = message.arg1; 7405 config = (WifiConfiguration) message.obj; 7406 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7407 boolean updatedExisting = false; 7408 7409 /* Save the network config */ 7410 if (config != null) { 7411 // When connecting to an access point, WifiStateMachine wants to update the 7412 // relevant config with administrative data. This update should not be 7413 // considered a 'real' update, therefore lockdown by Device Owner must be 7414 // disregarded. 7415 if (!recordUidIfAuthorized(config, message.sendingUid, 7416 /* onlyAnnotate */ true)) { 7417 loge("Not authorized to update network " 7418 + " config=" + config.SSID 7419 + " cnid=" + config.networkId 7420 + " uid=" + message.sendingUid); 7421 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7422 WifiManager.NOT_AUTHORIZED); 7423 break; 7424 } 7425 7426 String configKey = config.configKey(true /* allowCached */); 7427 WifiConfiguration savedConfig = 7428 mWifiConfigStore.getWifiConfiguration(configKey); 7429 if (savedConfig != null) { 7430 // There is an existing config with this netId, but it wasn't exposed 7431 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7432 // getConfiguredNetworks). Remove those bits and update the config. 7433 config = savedConfig; 7434 loge("CONNECT_NETWORK updating existing config with id=" + 7435 config.networkId + " configKey=" + configKey); 7436 config.ephemeral = false; 7437 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7438 updatedExisting = true; 7439 } 7440 7441 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7442 netId = result.getNetworkId(); 7443 } 7444 config = mWifiConfigStore.getWifiConfiguration(netId); 7445 7446 if (config == null) { 7447 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7448 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7449 + getCurrentState().getName()); 7450 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7451 WifiManager.ERROR); 7452 break; 7453 } else { 7454 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7455 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 7456 + " config=" + config.SSID 7457 + " cnid=" + config.networkId 7458 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7459 + " my state " + getCurrentState().getName() 7460 + " uid = " + message.sendingUid 7461 + wasSkipped); 7462 } 7463 7464 autoRoamSetBSSID(netId, "any"); 7465 7466 if (message.sendingUid == Process.WIFI_UID 7467 || message.sendingUid == Process.SYSTEM_UID) { 7468 // As a sanity measure, clear the BSSID in the supplicant network block. 7469 // If system or Wifi Settings want to connect, they will not 7470 // specify the BSSID. 7471 // If an app however had added a BSSID to this configuration, and the BSSID 7472 // was wrong, Then we would forever fail to connect until that BSSID 7473 // is cleaned up. 7474 clearConfigBSSID(config, "CONNECT_NETWORK"); 7475 } 7476 7477 if (deferForUserInput(message, netId, true)) { 7478 break; 7479 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7480 WifiConfiguration.USER_BANNED) { 7481 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7482 WifiManager.NOT_AUTHORIZED); 7483 break; 7484 } 7485 7486 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7487 7488 /* Tell autojoin the user did try to connect to that network if from settings */ 7489 boolean persist = 7490 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7491 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7492 7493 mWifiConfigStore.setLastSelectedConfiguration(netId); 7494 7495 didDisconnect = false; 7496 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7497 && mLastNetworkId != netId) { 7498 /** Supplicant will ignore the reconnect if we are currently associated, 7499 * hence trigger a disconnect 7500 */ 7501 didDisconnect = true; 7502 mWifiNative.disconnect(); 7503 } 7504 7505 // Make sure the network is enabled, since supplicant will not reenable it 7506 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7507 7508 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7509 message.sendingUid) && mWifiNative.reconnect()) { 7510 lastConnectAttempt = System.currentTimeMillis(); 7511 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7512 7513 /* The state tracker handles enabling networks upon completion/failure */ 7514 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7515 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7516 if (didDisconnect) { 7517 /* Expect a disconnection from the old connection */ 7518 transitionTo(mDisconnectingState); 7519 } else if (updatedExisting && getCurrentState() == mConnectedState && 7520 getCurrentWifiConfiguration().networkId == netId) { 7521 // Update the current set of network capabilities, but stay in the 7522 // current state. 7523 updateCapabilities(config); 7524 } else { 7525 /** 7526 * Directly go to disconnected state where we 7527 * process the connection events from supplicant 7528 **/ 7529 transitionTo(mDisconnectedState); 7530 } 7531 } else { 7532 loge("Failed to connect config: " + config + " netId: " + netId); 7533 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7534 WifiManager.ERROR); 7535 break; 7536 } 7537 break; 7538 case WifiManager.SAVE_NETWORK: 7539 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7540 // Fall thru 7541 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7542 lastSavedConfigurationAttempt = null; // Used for debug 7543 config = (WifiConfiguration) message.obj; 7544 if (config == null) { 7545 loge("ERROR: SAVE_NETWORK with null configuration" 7546 + mSupplicantStateTracker.getSupplicantStateName() 7547 + " my state " + getCurrentState().getName()); 7548 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7549 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7550 WifiManager.ERROR); 7551 break; 7552 } 7553 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7554 int nid = config.networkId; 7555 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7556 + " config=" + config.SSID 7557 + " nid=" + config.networkId 7558 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7559 + " my state " + getCurrentState().getName()); 7560 7561 // Only record the uid if this is user initiated 7562 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7563 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7564 /* onlyAnnotate */ false)) { 7565 loge("Not authorized to update network " 7566 + " config=" + config.SSID 7567 + " cnid=" + config.networkId 7568 + " uid=" + message.sendingUid); 7569 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7570 WifiManager.NOT_AUTHORIZED); 7571 break; 7572 } 7573 7574 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7575 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7576 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7577 if (result.hasIpChanged()) { 7578 // The currently connection configuration was changed 7579 // We switched from DHCP to static or from static to DHCP, or the 7580 // static IP address has changed. 7581 log("Reconfiguring IP on connection"); 7582 // TODO: clear addresses and disable IPv6 7583 // to simplify obtainingIpState. 7584 transitionTo(mObtainingIpState); 7585 } 7586 if (result.hasProxyChanged()) { 7587 log("Reconfiguring proxy on connection"); 7588 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7589 } 7590 } 7591 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7592 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7593 7594 if (VDBG) { 7595 loge("Success save network nid=" 7596 + Integer.toString(result.getNetworkId())); 7597 } 7598 7599 synchronized(mScanResultCache) { 7600 /** 7601 * If the command comes from WifiManager, then 7602 * tell autojoin the user did try to modify and save that network, 7603 * and interpret the SAVE_NETWORK as a request to connect 7604 */ 7605 boolean user = message.what == WifiManager.SAVE_NETWORK; 7606 7607 // Did this connect come from settings 7608 boolean persistConnect = 7609 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7610 7611 if (user) { 7612 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7613 mWifiConfigStore.writeKnownNetworkHistory(false); 7614 } 7615 7616 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7617 , user, persistConnect); 7618 mWifiAutoJoinController.attemptAutoJoin(); 7619 } 7620 } else { 7621 loge("Failed to save network"); 7622 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7623 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7624 WifiManager.ERROR); 7625 } 7626 break; 7627 case WifiManager.FORGET_NETWORK: 7628 // Debug only, remember last configuration that was forgotten 7629 WifiConfiguration toRemove 7630 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7631 if (toRemove == null) { 7632 lastForgetConfigurationAttempt = null; 7633 } else { 7634 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7635 } 7636 // check that the caller owns this network 7637 netId = message.arg1; 7638 7639 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7640 /* onlyAnnotate */ false)) { 7641 loge("Not authorized to forget network " 7642 + " cnid=" + netId 7643 + " uid=" + message.sendingUid); 7644 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7645 WifiManager.NOT_AUTHORIZED); 7646 break; 7647 } 7648 7649 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7650 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7651 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7652 (WifiConfiguration) message.obj); 7653 } else { 7654 loge("Failed to forget network"); 7655 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7656 WifiManager.ERROR); 7657 } 7658 break; 7659 case WifiManager.START_WPS: 7660 WpsInfo wpsInfo = (WpsInfo) message.obj; 7661 WpsResult wpsResult; 7662 switch (wpsInfo.setup) { 7663 case WpsInfo.PBC: 7664 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7665 break; 7666 case WpsInfo.KEYPAD: 7667 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7668 break; 7669 case WpsInfo.DISPLAY: 7670 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7671 break; 7672 default: 7673 wpsResult = new WpsResult(Status.FAILURE); 7674 loge("Invalid setup for WPS"); 7675 break; 7676 } 7677 mWifiConfigStore.setLastSelectedConfiguration 7678 (WifiConfiguration.INVALID_NETWORK_ID); 7679 if (wpsResult.status == Status.SUCCESS) { 7680 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7681 transitionTo(mWpsRunningState); 7682 } else { 7683 loge("Failed to start WPS with config " + wpsInfo.toString()); 7684 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7685 } 7686 break; 7687 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7688 if (DBG) log("Network connection established"); 7689 mLastNetworkId = message.arg1; 7690 mLastBssid = (String) message.obj; 7691 7692 mWifiInfo.setBSSID(mLastBssid); 7693 mWifiInfo.setNetworkId(mLastNetworkId); 7694 7695 sendNetworkStateChangeBroadcast(mLastBssid); 7696 transitionTo(mObtainingIpState); 7697 break; 7698 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7699 // Calling handleNetworkDisconnect here is redundant because we might already 7700 // have called it when leaving L2ConnectedState to go to disconnecting state 7701 // or thru other path 7702 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7703 // if they are valid, and only in this case call handleNEtworkDisconnect, 7704 // TODO: this should be fixed for a L MR release 7705 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7706 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7707 // at the chip etc... 7708 if (DBG) log("ConnectModeState: Network connection lost "); 7709 handleNetworkDisconnect(); 7710 transitionTo(mDisconnectedState); 7711 break; 7712 case CMD_PNO_NETWORK_FOUND: 7713 processPnoNetworkFound((ScanResult[])message.obj); 7714 break; 7715 default: 7716 return NOT_HANDLED; 7717 } 7718 return HANDLED; 7719 } 7720 } 7721 7722 private void updateCapabilities(WifiConfiguration config) { 7723 if (config.ephemeral) { 7724 mNetworkCapabilities.removeCapability( 7725 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7726 } else { 7727 mNetworkCapabilities.addCapability( 7728 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7729 } 7730 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7731 } 7732 7733 private class WifiNetworkAgent extends NetworkAgent { 7734 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7735 NetworkCapabilities nc, LinkProperties lp, int score) { 7736 super(l, c, TAG, ni, nc, lp, score); 7737 } 7738 protected void unwanted() { 7739 // Ignore if we're not the current networkAgent. 7740 if (this != mNetworkAgent) return; 7741 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7742 + Integer.toString(mWifiInfo.score)); 7743 unwantedNetwork(network_status_unwanted_disconnect); 7744 } 7745 7746 @Override 7747 protected void networkStatus(int status) { 7748 if (this != mNetworkAgent) return; 7749 if (status == NetworkAgent.INVALID_NETWORK) { 7750 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7751 + Integer.toString(mWifiInfo.score)); 7752 unwantedNetwork(network_status_unwanted_disable_autojoin); 7753 } else if (status == NetworkAgent.VALID_NETWORK) { 7754 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7755 + Integer.toString(mWifiInfo.score)); 7756 doNetworkStatus(status); 7757 } 7758 } 7759 7760 @Override 7761 protected void saveAcceptUnvalidated(boolean accept) { 7762 if (this != mNetworkAgent) return; 7763 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7764 } 7765 } 7766 7767 void unwantedNetwork(int reason) { 7768 sendMessage(CMD_UNWANTED_NETWORK, reason); 7769 } 7770 7771 void doNetworkStatus(int status) { 7772 sendMessage(CMD_NETWORK_STATUS, status); 7773 } 7774 7775 // rfc4186 & rfc4187: 7776 // create Permanent Identity base on IMSI, 7777 // identity = usernam@realm 7778 // with username = prefix | IMSI 7779 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7780 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7781 String mcc; 7782 String mnc; 7783 String prefix; 7784 7785 if (imsi == null || imsi.isEmpty()) 7786 return ""; 7787 7788 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7789 prefix = "1"; 7790 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7791 prefix = "0"; 7792 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7793 prefix = "6"; 7794 else // not a valide EapMethod 7795 return ""; 7796 7797 /* extract mcc & mnc from mccMnc */ 7798 if (mccMnc != null && !mccMnc.isEmpty()) { 7799 mcc = mccMnc.substring(0, 3); 7800 mnc = mccMnc.substring(3); 7801 if (mnc.length() == 2) 7802 mnc = "0" + mnc; 7803 } else { 7804 // extract mcc & mnc from IMSI, assume mnc size is 3 7805 mcc = imsi.substring(0, 3); 7806 mnc = imsi.substring(3, 6); 7807 } 7808 7809 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7810 } 7811 7812 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7813 if (config == null) 7814 return false; 7815 7816 // We are still seeing a fairly high power consumption triggered by autojoin scans 7817 // Hence do partial scans only for PSK configuration that are roamable since the 7818 // primary purpose of the partial scans is roaming. 7819 // Full badn scans with exponential backoff for the purpose or extended roaming and 7820 // network switching are performed unconditionally. 7821 ScanDetailCache scanDetailCache = 7822 mWifiConfigStore.getScanDetailCache(config); 7823 if (scanDetailCache == null 7824 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7825 || scanDetailCache.size() > 6) { 7826 //return true but to not trigger the scan 7827 return true; 7828 } 7829 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7830 ONE_HOUR_MILLI, restrictChannelList); 7831 if (channels != null && channels.size() != 0) { 7832 StringBuilder freqs = new StringBuilder(); 7833 boolean first = true; 7834 for (Integer channel : channels) { 7835 if (!first) 7836 freqs.append(","); 7837 freqs.append(channel.toString()); 7838 first = false; 7839 } 7840 //if (DBG) { 7841 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7842 //} 7843 // Call wifi native to start the scan 7844 if (startScanNative( 7845 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7846 freqs.toString())) { 7847 // Only count battery consumption if scan request is accepted 7848 noteScanStart(SCAN_ALARM_SOURCE, null); 7849 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7850 } else { 7851 // used for debug only, mark scan as failed 7852 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7853 } 7854 return true; 7855 } else { 7856 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7857 return false; 7858 } 7859 } 7860 7861 void clearCurrentConfigBSSID(String dbg) { 7862 // Clear the bssid in the current config's network block 7863 WifiConfiguration config = getCurrentWifiConfiguration(); 7864 if (config == null) 7865 return; 7866 clearConfigBSSID(config, dbg); 7867 } 7868 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7869 if (config == null) 7870 return; 7871 if (DBG) { 7872 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7873 + " config.bssid " + config.BSSID); 7874 } 7875 config.autoJoinBSSID = "any"; 7876 config.BSSID = "any"; 7877 if (DBG) { 7878 loge(dbg + " " + config.SSID 7879 + " nid=" + Integer.toString(config.networkId)); 7880 } 7881 mWifiConfigStore.saveWifiConfigBSSID(config); 7882 } 7883 7884 class L2ConnectedState extends State { 7885 @Override 7886 public void enter() { 7887 mRssiPollToken++; 7888 if (mEnableRssiPolling) { 7889 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7890 } 7891 if (mNetworkAgent != null) { 7892 loge("Have NetworkAgent when entering L2Connected"); 7893 setNetworkDetailedState(DetailedState.DISCONNECTED); 7894 } 7895 setNetworkDetailedState(DetailedState.CONNECTING); 7896 7897 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 7898 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7899 } 7900 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7901 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7902 mLinkProperties, 60); 7903 7904 // We must clear the config BSSID, as the wifi chipset may decide to roam 7905 // from this point on and having the BSSID specified in the network block would 7906 // cause the roam to faile and the device to disconnect 7907 clearCurrentConfigBSSID("L2ConnectedState"); 7908 7909 try { 7910 mIpReachabilityMonitor = new IpReachabilityMonitor( 7911 mInterfaceName, 7912 new IpReachabilityMonitor.Callback() { 7913 @Override 7914 public void notifyLost(InetAddress ip, String logMsg) { 7915 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 7916 } 7917 }); 7918 } catch (IllegalArgumentException e) { 7919 Log.wtf("Failed to create IpReachabilityMonitor", e); 7920 } 7921 } 7922 7923 @Override 7924 public void exit() { 7925 if (mIpReachabilityMonitor != null) { 7926 mIpReachabilityMonitor.stop(); 7927 mIpReachabilityMonitor = null; 7928 } 7929 7930 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7931 // Bug: 15347363 7932 // For paranoia's sake, call handleNetworkDisconnect 7933 // only if BSSID is null or last networkId 7934 // is not invalid. 7935 if (DBG) { 7936 StringBuilder sb = new StringBuilder(); 7937 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7938 if (mLastBssid !=null) { 7939 sb.append(" ").append(mLastBssid); 7940 } 7941 } 7942 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7943 handleNetworkDisconnect(); 7944 } 7945 } 7946 7947 @Override 7948 public boolean processMessage(Message message) { 7949 logStateAndMessage(message, getClass().getSimpleName()); 7950 7951 switch (message.what) { 7952 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7953 handlePreDhcpSetup(); 7954 break; 7955 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7956 handlePostDhcpSetup(); 7957 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7958 if (DBG) log("WifiStateMachine DHCP successful"); 7959 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7960 // We advance to mConnectedState because handleIPv4Success will call 7961 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7962 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7963 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 7964 if (DBG) { 7965 int count = -1; 7966 WifiConfiguration config = getCurrentWifiConfiguration(); 7967 if (config != null) { 7968 count = config.numConnectionFailures; 7969 } 7970 log("WifiStateMachine DHCP failure count=" + count); 7971 } 7972 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7973 // As above, we transition to mDisconnectingState via updateLinkProperties. 7974 } 7975 break; 7976 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7977 handleSuccessfulIpConfiguration(); 7978 sendConnectedState(); 7979 transitionTo(mConnectedState); 7980 break; 7981 case CMD_IP_CONFIGURATION_LOST: 7982 // Get Link layer stats so that we get fresh tx packet counters. 7983 getWifiLinkLayerStats(true); 7984 handleIpConfigurationLost(); 7985 transitionTo(mDisconnectingState); 7986 break; 7987 case CMD_IP_REACHABILITY_LOST: 7988 if (DBG && message.obj != null) log((String) message.obj); 7989 handleIpReachabilityLost(); 7990 transitionTo(mDisconnectingState); 7991 break; 7992 case CMD_DISCONNECT: 7993 mWifiNative.disconnect(); 7994 transitionTo(mDisconnectingState); 7995 break; 7996 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7997 if (message.arg1 == 1) { 7998 mWifiNative.disconnect(); 7999 mTemporarilyDisconnectWifi = true; 8000 transitionTo(mDisconnectingState); 8001 } 8002 break; 8003 case CMD_SET_OPERATIONAL_MODE: 8004 if (message.arg1 != CONNECT_MODE) { 8005 sendMessage(CMD_DISCONNECT); 8006 deferMessage(message); 8007 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8008 noteWifiDisabledWhileAssociated(); 8009 } 8010 } 8011 mWifiConfigStore. 8012 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8013 break; 8014 case CMD_SET_COUNTRY_CODE: 8015 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8016 deferMessage(message); 8017 break; 8018 case CMD_START_SCAN: 8019 //if (DBG) { 8020 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 8021 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8022 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8023 + " targetRoamBSSID=" + mTargetRoamBSSID 8024 + " RSSI=" + mWifiInfo.getRssi()); 8025 //} 8026 if (message.arg1 == SCAN_ALARM_SOURCE) { 8027 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8028 // not be processed) and restart the scan if neede 8029 if (!getEnableAutoJoinWhenAssociated()) { 8030 return HANDLED; 8031 } 8032 boolean shouldScan = mScreenOn; 8033 8034 if (!checkAndRestartDelayedScan(message.arg2, 8035 shouldScan, 8036 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8037 null, null)) { 8038 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8039 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 8040 + message.arg1 8041 + " " + message.arg2 + ", " + mDelayedScanCounter 8042 + " -> obsolete"); 8043 return HANDLED; 8044 } 8045 if (mP2pConnected.get()) { 8046 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 8047 + message.arg1 8048 + " " + message.arg2 + ", " + mDelayedScanCounter 8049 + " ignore because P2P is connected"); 8050 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8051 return HANDLED; 8052 } 8053 boolean tryFullBandScan = false; 8054 boolean restrictChannelList = false; 8055 long now_ms = System.currentTimeMillis(); 8056 if (DBG) { 8057 loge("WifiStateMachine CMD_START_SCAN with age=" 8058 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8059 + " interval=" + fullBandConnectedTimeIntervalMilli 8060 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8061 } 8062 if (mWifiInfo != null) { 8063 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8064 (now_ms - lastFullBandConnectedTimeMilli) 8065 > fullBandConnectedTimeIntervalMilli) { 8066 if (DBG) { 8067 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 8068 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8069 + " interval=" + fullBandConnectedTimeIntervalMilli 8070 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8071 } 8072 tryFullBandScan = true; 8073 } 8074 8075 if (mWifiInfo.txSuccessRate > 8076 mWifiConfigStore.maxTxPacketForFullScans 8077 || mWifiInfo.rxSuccessRate > 8078 mWifiConfigStore.maxRxPacketForFullScans) { 8079 // Too much traffic at the interface, hence no full band scan 8080 if (DBG) { 8081 loge("WifiStateMachine CMD_START_SCAN " + 8082 "prevent full band scan due to pkt rate"); 8083 } 8084 tryFullBandScan = false; 8085 } 8086 8087 if (mWifiInfo.txSuccessRate > 8088 mWifiConfigStore.maxTxPacketForPartialScans 8089 || mWifiInfo.rxSuccessRate > 8090 mWifiConfigStore.maxRxPacketForPartialScans) { 8091 // Don't scan if lots of packets are being sent 8092 restrictChannelList = true; 8093 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8094 if (DBG) { 8095 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 8096 + " ...and ignore scans" 8097 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8098 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8099 } 8100 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8101 return HANDLED; 8102 } 8103 } 8104 } 8105 8106 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8107 if (DBG) { 8108 loge("WifiStateMachine CMD_START_SCAN full=" + 8109 tryFullBandScan); 8110 } 8111 if (currentConfiguration != null) { 8112 if (fullBandConnectedTimeIntervalMilli 8113 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8114 // Sanity 8115 fullBandConnectedTimeIntervalMilli 8116 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8117 } 8118 if (tryFullBandScan) { 8119 lastFullBandConnectedTimeMilli = now_ms; 8120 if (fullBandConnectedTimeIntervalMilli 8121 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8122 // Increase the interval 8123 fullBandConnectedTimeIntervalMilli 8124 = fullBandConnectedTimeIntervalMilli 8125 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8126 8127 if (DBG) { 8128 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8129 + fullBandConnectedTimeIntervalMilli); 8130 } 8131 } 8132 handleScanRequest( 8133 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8134 } else { 8135 if (!startScanForConfiguration( 8136 currentConfiguration, restrictChannelList)) { 8137 if (DBG) { 8138 loge("WifiStateMachine starting scan, " + 8139 " did not find channels -> full"); 8140 } 8141 lastFullBandConnectedTimeMilli = now_ms; 8142 if (fullBandConnectedTimeIntervalMilli 8143 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8144 // Increase the interval 8145 fullBandConnectedTimeIntervalMilli 8146 = fullBandConnectedTimeIntervalMilli 8147 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8148 8149 if (DBG) { 8150 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8151 + fullBandConnectedTimeIntervalMilli); 8152 } 8153 } 8154 handleScanRequest( 8155 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8156 } 8157 } 8158 8159 } else { 8160 loge("CMD_START_SCAN : connected mode and no configuration"); 8161 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8162 } 8163 } else { 8164 // Not scan alarm source 8165 return NOT_HANDLED; 8166 } 8167 break; 8168 /* Ignore connection to same network */ 8169 case WifiManager.CONNECT_NETWORK: 8170 int netId = message.arg1; 8171 if (mWifiInfo.getNetworkId() == netId) { 8172 break; 8173 } 8174 return NOT_HANDLED; 8175 /* Ignore */ 8176 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8177 break; 8178 case CMD_RSSI_POLL: 8179 if (message.arg1 == mRssiPollToken) { 8180 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8181 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8182 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8183 if (stats != null) { 8184 // Sanity check the results provided by driver 8185 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8186 && (stats.rssi_mgmt == 0 8187 || stats.beacon_rx == 0)) { 8188 stats = null; 8189 } 8190 } 8191 // Get Info and continue polling 8192 fetchRssiLinkSpeedAndFrequencyNative(); 8193 calculateWifiScore(stats); 8194 } 8195 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8196 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8197 8198 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8199 } else { 8200 // Polling has completed 8201 } 8202 break; 8203 case CMD_ENABLE_RSSI_POLL: 8204 cleanWifiScore(); 8205 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8206 mEnableRssiPolling = (message.arg1 == 1); 8207 } else { 8208 mEnableRssiPolling = false; 8209 } 8210 mRssiPollToken++; 8211 if (mEnableRssiPolling) { 8212 // First poll 8213 fetchRssiLinkSpeedAndFrequencyNative(); 8214 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8215 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8216 } 8217 break; 8218 case WifiManager.RSSI_PKTCNT_FETCH: 8219 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8220 fetchRssiLinkSpeedAndFrequencyNative(); 8221 info.rssi = mWifiInfo.getRssi(); 8222 fetchPktcntNative(info); 8223 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8224 break; 8225 case CMD_DELAYED_NETWORK_DISCONNECT: 8226 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8227 8228 // Ignore if we are not debouncing 8229 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8230 + message.arg1); 8231 return HANDLED; 8232 } else { 8233 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8234 + message.arg1); 8235 8236 linkDebouncing = false; 8237 // If we are still debouncing while this message comes, 8238 // it means we were not able to reconnect within the alloted time 8239 // = LINK_FLAPPING_DEBOUNCE_MSEC 8240 // and thus, trigger a real disconnect 8241 handleNetworkDisconnect(); 8242 transitionTo(mDisconnectedState); 8243 } 8244 break; 8245 case CMD_ASSOCIATED_BSSID: 8246 if ((String) message.obj == null) { 8247 loge("Associated command w/o BSSID"); 8248 break; 8249 } 8250 mLastBssid = (String) message.obj; 8251 if (mLastBssid != null 8252 && (mWifiInfo.getBSSID() == null 8253 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8254 mWifiInfo.setBSSID((String) message.obj); 8255 sendNetworkStateChangeBroadcast(mLastBssid); 8256 } 8257 break; 8258 default: 8259 return NOT_HANDLED; 8260 } 8261 8262 return HANDLED; 8263 } 8264 } 8265 8266 class ObtainingIpState extends State { 8267 @Override 8268 public void enter() { 8269 if (DBG) { 8270 String key = ""; 8271 if (getCurrentWifiConfiguration() != null) { 8272 key = getCurrentWifiConfiguration().configKey(); 8273 } 8274 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8275 + " " + key + " " 8276 + " roam=" + mAutoRoaming 8277 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8278 + " watchdog= " + obtainingIpWatchdogCount); 8279 } 8280 8281 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8282 // We might still be roaming 8283 linkDebouncing = false; 8284 8285 // Send event to CM & network change broadcast 8286 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8287 8288 // We must clear the config BSSID, as the wifi chipset may decide to roam 8289 // from this point on and having the BSSID specified in the network block would 8290 // cause the roam to faile and the device to disconnect 8291 clearCurrentConfigBSSID("ObtainingIpAddress"); 8292 8293 try { 8294 mNwService.enableIpv6(mInterfaceName); 8295 } catch (RemoteException re) { 8296 loge("Failed to enable IPv6: " + re); 8297 } catch (IllegalStateException e) { 8298 loge("Failed to enable IPv6: " + e); 8299 } 8300 8301 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8302 if (isRoaming()) { 8303 renewDhcp(); 8304 } else { 8305 // Remove any IP address on the interface in case we're switching from static 8306 // IP configuration to DHCP. This is safe because if we get here when not 8307 // roaming, we don't have a usable address. 8308 clearIPv4Address(mInterfaceName); 8309 startDhcp(); 8310 } 8311 obtainingIpWatchdogCount++; 8312 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8313 // Get Link layer stats so as we get fresh tx packet counters 8314 getWifiLinkLayerStats(true); 8315 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8316 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8317 } else { 8318 // stop any running dhcp before assigning static IP 8319 stopDhcp(); 8320 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8321 mLastNetworkId); 8322 if (config.ipAddress == null) { 8323 loge("Static IP lacks address"); 8324 sendMessage(CMD_STATIC_IP_FAILURE); 8325 } else { 8326 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8327 ifcg.setLinkAddress(config.ipAddress); 8328 ifcg.setInterfaceUp(); 8329 try { 8330 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8331 if (DBG) log("Static IP configuration succeeded"); 8332 DhcpResults dhcpResults = new DhcpResults(config); 8333 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8334 } catch (RemoteException re) { 8335 loge("Static IP configuration failed: " + re); 8336 sendMessage(CMD_STATIC_IP_FAILURE); 8337 } catch (IllegalStateException e) { 8338 loge("Static IP configuration failed: " + e); 8339 sendMessage(CMD_STATIC_IP_FAILURE); 8340 } 8341 } 8342 } 8343 } 8344 @Override 8345 public boolean processMessage(Message message) { 8346 logStateAndMessage(message, getClass().getSimpleName()); 8347 8348 switch(message.what) { 8349 case CMD_STATIC_IP_SUCCESS: 8350 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8351 break; 8352 case CMD_STATIC_IP_FAILURE: 8353 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8354 break; 8355 case CMD_AUTO_CONNECT: 8356 case CMD_AUTO_ROAM: 8357 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8358 break; 8359 case WifiManager.SAVE_NETWORK: 8360 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8361 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8362 deferMessage(message); 8363 break; 8364 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8365 case CMD_SET_HIGH_PERF_MODE: 8366 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8367 deferMessage(message); 8368 break; 8369 /* Defer scan request since we should not switch to other channels at DHCP */ 8370 case CMD_START_SCAN: 8371 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8372 deferMessage(message); 8373 break; 8374 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8375 if (message.arg1 == obtainingIpWatchdogCount) { 8376 loge("ObtainingIpAddress: Watchdog Triggered, count=" 8377 + obtainingIpWatchdogCount); 8378 handleIpConfigurationLost(); 8379 transitionTo(mDisconnectingState); 8380 break; 8381 } 8382 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8383 break; 8384 default: 8385 return NOT_HANDLED; 8386 } 8387 return HANDLED; 8388 } 8389 } 8390 8391 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8392 // sets mPoorNetworkDetectionEnabled to false. 8393 class VerifyingLinkState extends State { 8394 @Override 8395 public void enter() { 8396 log(getName() + " enter"); 8397 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8398 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8399 sendNetworkStateChangeBroadcast(mLastBssid); 8400 // End roaming 8401 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8402 } 8403 @Override 8404 public boolean processMessage(Message message) { 8405 logStateAndMessage(message, getClass().getSimpleName()); 8406 8407 switch (message.what) { 8408 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8409 // Stay here 8410 log(getName() + " POOR_LINK_DETECTED: no transition"); 8411 break; 8412 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8413 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8414 sendConnectedState(); 8415 transitionTo(mConnectedState); 8416 break; 8417 default: 8418 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8419 return NOT_HANDLED; 8420 } 8421 return HANDLED; 8422 } 8423 } 8424 8425 private void sendConnectedState() { 8426 // If this network was explicitly selected by the user, evaluate whether to call 8427 // explicitlySelected() so the system can treat it appropriately. 8428 WifiConfiguration config = getCurrentWifiConfiguration(); 8429 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8430 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8431 if (DBG) { 8432 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8433 } 8434 if (prompt) { 8435 // Selected by the user via Settings or QuickSettings. If this network has Internet 8436 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8437 // really want to switch, or has already confirmed and selected "Don't ask again". 8438 if (DBG) { 8439 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8440 } 8441 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8442 } 8443 } 8444 8445 setNetworkDetailedState(DetailedState.CONNECTED); 8446 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8447 sendNetworkStateChangeBroadcast(mLastBssid); 8448 } 8449 8450 class RoamingState extends State { 8451 boolean mAssociated; 8452 @Override 8453 public void enter() { 8454 if (DBG) { 8455 log("RoamingState Enter" 8456 + " mScreenOn=" + mScreenOn ); 8457 } 8458 setScanAlarm(false); 8459 8460 // Make sure we disconnect if roaming fails 8461 roamWatchdogCount++; 8462 loge("Start Roam Watchdog " + roamWatchdogCount); 8463 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8464 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8465 mAssociated = false; 8466 } 8467 @Override 8468 public boolean processMessage(Message message) { 8469 logStateAndMessage(message, getClass().getSimpleName()); 8470 WifiConfiguration config; 8471 switch (message.what) { 8472 case CMD_IP_CONFIGURATION_LOST: 8473 config = getCurrentWifiConfiguration(); 8474 if (config != null) { 8475 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8476 mWifiConfigStore.noteRoamingFailure(config, 8477 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8478 } 8479 return NOT_HANDLED; 8480 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8481 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8482 return HANDLED; 8483 case CMD_UNWANTED_NETWORK: 8484 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8485 return HANDLED; 8486 case CMD_SET_OPERATIONAL_MODE: 8487 if (message.arg1 != CONNECT_MODE) { 8488 deferMessage(message); 8489 } 8490 break; 8491 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8492 /** 8493 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8494 * before NETWORK_DISCONNECTION_EVENT 8495 * And there is an associated BSSID corresponding to our target BSSID, then 8496 * we have missed the network disconnection, transition to mDisconnectedState 8497 * and handle the rest of the events there. 8498 */ 8499 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8500 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8501 || stateChangeResult.state == SupplicantState.INACTIVE 8502 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8503 if (DBG) { 8504 log("STATE_CHANGE_EVENT in roaming state " 8505 + stateChangeResult.toString() ); 8506 } 8507 if (stateChangeResult.BSSID != null 8508 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8509 handleNetworkDisconnect(); 8510 transitionTo(mDisconnectedState); 8511 } 8512 } 8513 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8514 // We completed the layer2 roaming part 8515 mAssociated = true; 8516 if (stateChangeResult.BSSID != null) { 8517 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8518 } 8519 } 8520 break; 8521 case CMD_ROAM_WATCHDOG_TIMER: 8522 if (roamWatchdogCount == message.arg1) { 8523 if (DBG) log("roaming watchdog! -> disconnect"); 8524 mRoamFailCount++; 8525 handleNetworkDisconnect(); 8526 mWifiNative.disconnect(); 8527 transitionTo(mDisconnectedState); 8528 } 8529 break; 8530 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8531 if (mAssociated) { 8532 if (DBG) log("roaming and Network connection established"); 8533 mLastNetworkId = message.arg1; 8534 mLastBssid = (String) message.obj; 8535 mWifiInfo.setBSSID(mLastBssid); 8536 mWifiInfo.setNetworkId(mLastNetworkId); 8537 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8538 sendNetworkStateChangeBroadcast(mLastBssid); 8539 transitionTo(mObtainingIpState); 8540 } else { 8541 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8542 } 8543 break; 8544 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8545 // Throw away but only if it corresponds to the network we're roaming to 8546 String bssid = (String)message.obj; 8547 if (true) { 8548 String target = ""; 8549 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8550 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8551 + " BSSID=" + bssid 8552 + " target=" + target); 8553 } 8554 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8555 handleNetworkDisconnect(); 8556 transitionTo(mDisconnectedState); 8557 } 8558 break; 8559 case WifiMonitor.SSID_TEMP_DISABLED: 8560 // Auth error while roaming 8561 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8562 + " id=" + Integer.toString(message.arg1) 8563 + " isRoaming=" + isRoaming() 8564 + " roam=" + Integer.toString(mAutoRoaming)); 8565 if (message.arg1 == mLastNetworkId) { 8566 config = getCurrentWifiConfiguration(); 8567 if (config != null) { 8568 mWifiLogger.captureBugReportData( 8569 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8570 mWifiConfigStore.noteRoamingFailure(config, 8571 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8572 } 8573 handleNetworkDisconnect(); 8574 transitionTo(mDisconnectingState); 8575 } 8576 return NOT_HANDLED; 8577 case CMD_START_SCAN: 8578 deferMessage(message); 8579 break; 8580 default: 8581 return NOT_HANDLED; 8582 } 8583 return HANDLED; 8584 } 8585 8586 @Override 8587 public void exit() { 8588 loge("WifiStateMachine: Leaving Roaming state"); 8589 } 8590 } 8591 8592 class ConnectedState extends State { 8593 @Override 8594 public void enter() { 8595 String address; 8596 updateDefaultRouteMacAddress(1000); 8597 if (DBG) { 8598 log("Enter ConnectedState " 8599 + " mScreenOn=" + mScreenOn 8600 + " scanperiod=" 8601 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8602 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8603 + mWifiConfigStore.enableHalBasedPno.get() 8604 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8605 } 8606 if (mScreenOn 8607 && getEnableAutoJoinWhenAssociated()) { 8608 if (useHalBasedAutoJoinOffload()) { 8609 startGScanConnectedModeOffload("connectedEnter"); 8610 } else { 8611 // restart scan alarm 8612 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8613 null, null); 8614 } 8615 } 8616 registerConnected(); 8617 lastConnectAttempt = 0; 8618 targetWificonfiguration = null; 8619 // Paranoia 8620 linkDebouncing = false; 8621 8622 // Not roaming anymore 8623 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8624 8625 if (testNetworkDisconnect) { 8626 testNetworkDisconnectCounter++; 8627 loge("ConnectedState Enter start disconnect test " + 8628 testNetworkDisconnectCounter); 8629 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8630 testNetworkDisconnectCounter, 0), 15000); 8631 } 8632 8633 // Reenable all networks, allow for hidden networks to be scanned 8634 mWifiConfigStore.enableAllNetworks(); 8635 8636 mLastDriverRoamAttempt = 0; 8637 8638 //startLazyRoam(); 8639 } 8640 @Override 8641 public boolean processMessage(Message message) { 8642 WifiConfiguration config = null; 8643 logStateAndMessage(message, getClass().getSimpleName()); 8644 8645 switch (message.what) { 8646 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8647 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8648 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8649 return HANDLED; 8650 } 8651 /* If we are still in Disconnected state after having discovered a valid 8652 * network this means autojoin didnt managed to associate to the network, 8653 * then restart PNO so as we will try associating to it again. 8654 */ 8655 if (useHalBasedAutoJoinOffload()) { 8656 if (mGScanStartTimeMilli == 0) { 8657 // If offload is not started, then start it... 8658 startGScanConnectedModeOffload("connectedRestart"); 8659 } else { 8660 // If offload is already started, then check if we need to increase 8661 // the scan period and restart the Gscan 8662 long now = System.currentTimeMillis(); 8663 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8664 && ((now - mGScanStartTimeMilli) 8665 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8666 && (mGScanPeriodMilli 8667 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8668 { 8669 startConnectedGScan("Connected restart gscan"); 8670 } 8671 } 8672 } 8673 break; 8674 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8675 updateAssociatedScanPermission(); 8676 break; 8677 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8678 if (DBG) log("Watchdog reports poor link"); 8679 transitionTo(mVerifyingLinkState); 8680 break; 8681 case CMD_UNWANTED_NETWORK: 8682 if (message.arg1 == network_status_unwanted_disconnect) { 8683 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8684 mWifiNative.disconnect(); 8685 transitionTo(mDisconnectingState); 8686 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8687 config = getCurrentWifiConfiguration(); 8688 if (config != null) { 8689 // Disable autojoin 8690 config.numNoInternetAccessReports += 1; 8691 config.dirty = true; 8692 mWifiConfigStore.writeKnownNetworkHistory(false); 8693 } 8694 } 8695 return HANDLED; 8696 case CMD_NETWORK_STATUS: 8697 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8698 config = getCurrentWifiConfiguration(); 8699 if (config != null) { 8700 if (!config.validatedInternetAccess 8701 || config.numNoInternetAccessReports != 0) { 8702 config.dirty = true; 8703 } 8704 // re-enable autojoin 8705 config.numNoInternetAccessReports = 0; 8706 config.validatedInternetAccess = true; 8707 mWifiConfigStore.writeKnownNetworkHistory(false); 8708 } 8709 } 8710 return HANDLED; 8711 case CMD_ACCEPT_UNVALIDATED: 8712 boolean accept = (message.arg1 != 0); 8713 config = getCurrentWifiConfiguration(); 8714 if (config != null) { 8715 config.noInternetAccessExpected = accept; 8716 } 8717 return HANDLED; 8718 case CMD_TEST_NETWORK_DISCONNECT: 8719 // Force a disconnect 8720 if (message.arg1 == testNetworkDisconnectCounter) { 8721 mWifiNative.disconnect(); 8722 } 8723 break; 8724 case CMD_ASSOCIATED_BSSID: 8725 // ASSOCIATING to a new BSSID while already connected, indicates 8726 // that driver is roaming 8727 mLastDriverRoamAttempt = System.currentTimeMillis(); 8728 String toBSSID = (String)message.obj; 8729 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8730 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8731 } 8732 return NOT_HANDLED; 8733 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8734 long lastRoam = 0; 8735 if (mLastDriverRoamAttempt != 0) { 8736 // Calculate time since last driver roam attempt 8737 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8738 mLastDriverRoamAttempt = 0; 8739 } 8740 if (unexpectedDisconnectedReason(message.arg2)) { 8741 mWifiLogger.captureBugReportData( 8742 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8743 } 8744 config = getCurrentWifiConfiguration(); 8745 if (mScreenOn 8746 && !linkDebouncing 8747 && config != null 8748 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8749 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8750 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8751 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8752 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8753 && mWifiInfo.getRssi() > 8754 WifiConfiguration.BAD_RSSI_24) 8755 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8756 && mWifiInfo.getRssi() > 8757 WifiConfiguration.BAD_RSSI_5))) { 8758 // Start de-bouncing the L2 disconnection: 8759 // this L2 disconnection might be spurious. 8760 // Hence we allow 7 seconds for the state machine to try 8761 // to reconnect, go thru the 8762 // roaming cycle and enter Obtaining IP address 8763 // before signalling the disconnect to ConnectivityService and L3 8764 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8765 linkDebouncing = true; 8766 8767 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8768 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8769 if (DBG) { 8770 log("NETWORK_DISCONNECTION_EVENT in connected state" 8771 + " BSSID=" + mWifiInfo.getBSSID() 8772 + " RSSI=" + mWifiInfo.getRssi() 8773 + " freq=" + mWifiInfo.getFrequency() 8774 + " reason=" + message.arg2 8775 + " -> debounce"); 8776 } 8777 return HANDLED; 8778 } else { 8779 if (DBG) { 8780 int ajst = -1; 8781 if (config != null) ajst = config.autoJoinStatus; 8782 log("NETWORK_DISCONNECTION_EVENT in connected state" 8783 + " BSSID=" + mWifiInfo.getBSSID() 8784 + " RSSI=" + mWifiInfo.getRssi() 8785 + " freq=" + mWifiInfo.getFrequency() 8786 + " was debouncing=" + linkDebouncing 8787 + " reason=" + message.arg2 8788 + " ajst=" + ajst); 8789 } 8790 } 8791 break; 8792 case CMD_AUTO_ROAM: 8793 // Clear the driver roam indication since we are attempting a framework roam 8794 mLastDriverRoamAttempt = 0; 8795 8796 /* Connect command coming from auto-join */ 8797 ScanResult candidate = (ScanResult)message.obj; 8798 String bssid = "any"; 8799 if (candidate != null && candidate.is5GHz()) { 8800 // Only lock BSSID for 5GHz networks 8801 bssid = candidate.BSSID; 8802 } 8803 int netId = mLastNetworkId; 8804 config = getCurrentWifiConfiguration(); 8805 8806 8807 if (config == null) { 8808 loge("AUTO_ROAM and no config, bail out..."); 8809 break; 8810 } 8811 8812 loge("CMD_AUTO_ROAM sup state " 8813 + mSupplicantStateTracker.getSupplicantStateName() 8814 + " my state " + getCurrentState().getName() 8815 + " nid=" + Integer.toString(netId) 8816 + " config " + config.configKey() 8817 + " roam=" + Integer.toString(message.arg2) 8818 + " to " + bssid 8819 + " targetRoamBSSID " + mTargetRoamBSSID); 8820 8821 /* Save the BSSID so as to lock it @ firmware */ 8822 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8823 loge("AUTO_ROAM nothing to do"); 8824 // Same BSSID, nothing to do 8825 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8826 break; 8827 }; 8828 8829 // Make sure the network is enabled, since supplicant will not re-enable it 8830 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8831 8832 if (deferForUserInput(message, netId, false)) { 8833 break; 8834 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8835 WifiConfiguration.USER_BANNED) { 8836 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8837 WifiManager.NOT_AUTHORIZED); 8838 break; 8839 } 8840 8841 boolean ret = false; 8842 if (mLastNetworkId != netId) { 8843 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8844 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8845 ret = true; 8846 } 8847 } else { 8848 ret = mWifiNative.reassociate(); 8849 } 8850 if (ret) { 8851 lastConnectAttempt = System.currentTimeMillis(); 8852 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8853 8854 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8855 mAutoRoaming = message.arg2; 8856 transitionTo(mRoamingState); 8857 8858 } else { 8859 loge("Failed to connect config: " + config + " netId: " + netId); 8860 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8861 WifiManager.ERROR); 8862 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8863 break; 8864 } 8865 break; 8866 default: 8867 return NOT_HANDLED; 8868 } 8869 return HANDLED; 8870 } 8871 8872 @Override 8873 public void exit() { 8874 loge("WifiStateMachine: Leaving Connected state"); 8875 setScanAlarm(false); 8876 mLastDriverRoamAttempt = 0; 8877 8878 stopLazyRoam(); 8879 8880 mWhiteListedSsids = null; 8881 } 8882 } 8883 8884 class DisconnectingState extends State { 8885 8886 @Override 8887 public void enter() { 8888 8889 if (PDBG) { 8890 loge(" Enter DisconnectingState State scan interval " 8891 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8892 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8893 + " screenOn=" + mScreenOn); 8894 } 8895 8896 // Make sure we disconnect: we enter this state prior to connecting to a new 8897 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 8898 // event which in this case will be indicating that supplicant started to associate. 8899 // In some cases supplicant doesn't ignore the connect requests (it might not 8900 // find the target SSID in its cache), 8901 // Therefore we end up stuck that state, hence the need for the watchdog. 8902 disconnectingWatchdogCount++; 8903 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8904 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8905 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8906 } 8907 8908 @Override 8909 public boolean processMessage(Message message) { 8910 logStateAndMessage(message, getClass().getSimpleName()); 8911 switch (message.what) { 8912 case CMD_SET_OPERATIONAL_MODE: 8913 if (message.arg1 != CONNECT_MODE) { 8914 deferMessage(message); 8915 } 8916 break; 8917 case CMD_START_SCAN: 8918 deferMessage(message); 8919 return HANDLED; 8920 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8921 if (disconnectingWatchdogCount == message.arg1) { 8922 if (DBG) log("disconnecting watchdog! -> disconnect"); 8923 handleNetworkDisconnect(); 8924 transitionTo(mDisconnectedState); 8925 } 8926 break; 8927 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8928 /** 8929 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8930 * we have missed the network disconnection, transition to mDisconnectedState 8931 * and handle the rest of the events there 8932 */ 8933 deferMessage(message); 8934 handleNetworkDisconnect(); 8935 transitionTo(mDisconnectedState); 8936 break; 8937 default: 8938 return NOT_HANDLED; 8939 } 8940 return HANDLED; 8941 } 8942 } 8943 8944 class DisconnectedState extends State { 8945 @Override 8946 public void enter() { 8947 // We dont scan frequently if this is a temporary disconnect 8948 // due to p2p 8949 if (mTemporarilyDisconnectWifi) { 8950 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8951 return; 8952 } 8953 8954 if (PDBG) { 8955 loge(" Enter DisconnectedState scan interval " 8956 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8957 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8958 + " screenOn=" + mScreenOn 8959 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8960 + mWifiConfigStore.enableHalBasedPno.get()); 8961 } 8962 8963 /** clear the roaming state, if we were roaming, we failed */ 8964 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8965 8966 if (useHalBasedAutoJoinOffload()) { 8967 startGScanDisconnectedModeOffload("disconnectedEnter"); 8968 } else { 8969 if (mScreenOn) { 8970 /** 8971 * screen lit and => delayed timer 8972 */ 8973 startDelayedScan(mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8974 null, null); 8975 } else { 8976 /** 8977 * screen dark and PNO supported => scan alarm disabled 8978 */ 8979 if (mBackgroundScanSupported) { 8980 /* If a regular scan result is pending, do not initiate background 8981 * scan until the scan results are returned. This is needed because 8982 * initiating a background scan will cancel the regular scan and 8983 * scan results will not be returned until background scanning is 8984 * cleared 8985 */ 8986 if (!mIsScanOngoing) { 8987 enableBackgroundScan(true); 8988 } 8989 } else { 8990 setScanAlarm(true); 8991 } 8992 } 8993 } 8994 8995 /** 8996 * If we have no networks saved, the supplicant stops doing the periodic scan. 8997 * The scans are useful to notify the user of the presence of an open network. 8998 * Note that these are not wake up scans. 8999 */ 9000 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9001 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9002 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9003 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9004 } 9005 9006 mDisconnectedTimeStamp = System.currentTimeMillis(); 9007 mDisconnectedPnoAlarmCount = 0; 9008 } 9009 @Override 9010 public boolean processMessage(Message message) { 9011 boolean ret = HANDLED; 9012 9013 logStateAndMessage(message, getClass().getSimpleName()); 9014 9015 switch (message.what) { 9016 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9017 if (mP2pConnected.get()) break; 9018 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9019 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9020 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9021 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9022 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9023 } 9024 break; 9025 case WifiManager.FORGET_NETWORK: 9026 case CMD_REMOVE_NETWORK: 9027 case CMD_REMOVE_APP_CONFIGURATIONS: 9028 case CMD_REMOVE_USER_CONFIGURATIONS: 9029 // Set up a delayed message here. After the forget/remove is handled 9030 // the handled delayed message will determine if there is a need to 9031 // scan and continue 9032 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9033 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9034 ret = NOT_HANDLED; 9035 break; 9036 case CMD_SET_OPERATIONAL_MODE: 9037 if (message.arg1 != CONNECT_MODE) { 9038 mOperationalMode = message.arg1; 9039 9040 mWifiConfigStore.disableAllNetworks(); 9041 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9042 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9043 setWifiState(WIFI_STATE_DISABLED); 9044 } 9045 transitionTo(mScanModeState); 9046 } 9047 mWifiConfigStore. 9048 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9049 break; 9050 /* Ignore network disconnect */ 9051 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9052 break; 9053 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9054 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9055 if (DBG) { 9056 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9057 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9058 + " debouncing=" + linkDebouncing); 9059 } 9060 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9061 /* ConnectModeState does the rest of the handling */ 9062 ret = NOT_HANDLED; 9063 break; 9064 case CMD_START_SCAN: 9065 if (!checkOrDeferScanAllowed(message)) { 9066 // The scan request was rescheduled 9067 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9068 return HANDLED; 9069 } 9070 if (message.arg1 == SCAN_ALARM_SOURCE) { 9071 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9072 // not be processed) and restart the scan 9073 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9074 if (mP2pConnected.get()) { 9075 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9076 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9077 period); 9078 } 9079 if (!checkAndRestartDelayedScan(message.arg2, 9080 true, period, null, null)) { 9081 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9082 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 9083 + message.arg1 9084 + " " + message.arg2 + ", " + mDelayedScanCounter 9085 + " -> obsolete"); 9086 return HANDLED; 9087 } 9088 /* Disable background scan temporarily during a regular scan */ 9089 enableBackgroundScan(false); 9090 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9091 ret = HANDLED; 9092 } else { 9093 9094 /* 9095 * The SCAN request is not handled in this state and 9096 * would eventually might/will get handled in the 9097 * parent's state. The PNO, if already enabled had to 9098 * get disabled before the SCAN trigger. Hence, stop 9099 * the PNO if already enabled in this state, though the 9100 * SCAN request is not handled(PNO disable before the 9101 * SCAN trigger in any other state is not the right 9102 * place to issue). 9103 */ 9104 9105 enableBackgroundScan(false); 9106 ret = NOT_HANDLED; 9107 } 9108 break; 9109 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9110 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9111 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9112 return HANDLED; 9113 } 9114 /* If we are still in Disconnected state after having discovered a valid 9115 * network this means autojoin didnt managed to associate to the network, 9116 * then restart PNO so as we will try associating to it again. 9117 */ 9118 if (useHalBasedAutoJoinOffload()) { 9119 if (mGScanStartTimeMilli == 0) { 9120 // If offload is not started, then start it... 9121 startGScanDisconnectedModeOffload("disconnectedRestart"); 9122 } else { 9123 // If offload is already started, then check if we need to increase 9124 // the scan period and restart the Gscan 9125 long now = System.currentTimeMillis(); 9126 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9127 && ((now - mGScanStartTimeMilli) 9128 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9129 && (mGScanPeriodMilli 9130 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9131 { 9132 startDisconnectedGScan("disconnected restart gscan"); 9133 } 9134 } 9135 } else { 9136 // If we are still disconnected for a short while after having found a 9137 // network thru PNO, then something went wrong, and for some reason we 9138 // couldn't join this network. 9139 // It might be due to a SW bug in supplicant or the wifi stack, or an 9140 // interoperability issue, or we try to join a bad bss and failed 9141 // In that case we want to restart pno so as to make sure that we will 9142 // attempt again to join that network. 9143 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9144 enableBackgroundScan(false); 9145 enableBackgroundScan(true); 9146 } 9147 return HANDLED; 9148 } 9149 break; 9150 case WifiMonitor.SCAN_RESULTS_EVENT: 9151 case WifiMonitor.SCAN_FAILED_EVENT: 9152 /* Re-enable background scan when a pending scan result is received */ 9153 if (!mScreenOn && mIsScanOngoing 9154 && mBackgroundScanSupported 9155 && !useHalBasedAutoJoinOffload()) { 9156 enableBackgroundScan(true); 9157 } else if (!mScreenOn 9158 && !mIsScanOngoing 9159 && mBackgroundScanSupported 9160 && !useHalBasedAutoJoinOffload()) { 9161 // We receive scan results from legacy PNO, hence restart the PNO alarm 9162 int delay; 9163 if (mDisconnectedPnoAlarmCount < 1) { 9164 delay = 30 * 1000; 9165 } else if (mDisconnectedPnoAlarmCount < 3) { 9166 delay = 60 * 1000; 9167 } else { 9168 delay = 360 * 1000; 9169 } 9170 mDisconnectedPnoAlarmCount++; 9171 if (VDBG) { 9172 loge("Starting PNO alarm " + delay); 9173 } 9174 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9175 System.currentTimeMillis() + delay, 9176 mPnoIntent); 9177 } 9178 /* Handled in parent state */ 9179 ret = NOT_HANDLED; 9180 break; 9181 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9182 NetworkInfo info = (NetworkInfo) message.obj; 9183 mP2pConnected.set(info.isConnected()); 9184 if (mP2pConnected.get()) { 9185 int defaultInterval = mContext.getResources().getInteger( 9186 R.integer.config_wifi_scan_interval_p2p_connected); 9187 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9188 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9189 defaultInterval); 9190 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9191 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9192 if (DBG) log("Turn on scanning after p2p disconnected"); 9193 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9194 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9195 } else { 9196 // If P2P is not connected and there are saved networks, then restart 9197 // scanning at the normal period. This is necessary because scanning might 9198 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9199 // was set to zero. 9200 if (useHalBasedAutoJoinOffload()) { 9201 startGScanDisconnectedModeOffload("p2pRestart"); 9202 } else { 9203 startDelayedScan( 9204 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9205 null, null); 9206 } 9207 } 9208 break; 9209 case CMD_RECONNECT: 9210 case CMD_REASSOCIATE: 9211 if (mTemporarilyDisconnectWifi) { 9212 // Drop a third party reconnect/reassociate if STA is 9213 // temporarily disconnected for p2p 9214 break; 9215 } else { 9216 // ConnectModeState handles it 9217 ret = NOT_HANDLED; 9218 } 9219 break; 9220 case CMD_SCREEN_STATE_CHANGED: 9221 handleScreenStateChanged(message.arg1 != 0); 9222 break; 9223 default: 9224 ret = NOT_HANDLED; 9225 } 9226 return ret; 9227 } 9228 9229 @Override 9230 public void exit() { 9231 mDisconnectedPnoAlarmCount = 0; 9232 /* No need for a background scan upon exit from a disconnected state */ 9233 enableBackgroundScan(false); 9234 setScanAlarm(false); 9235 mAlarmManager.cancel(mPnoIntent); 9236 } 9237 } 9238 9239 class WpsRunningState extends State { 9240 // Tracks the source to provide a reply 9241 private Message mSourceMessage; 9242 @Override 9243 public void enter() { 9244 mSourceMessage = Message.obtain(getCurrentMessage()); 9245 } 9246 @Override 9247 public boolean processMessage(Message message) { 9248 logStateAndMessage(message, getClass().getSimpleName()); 9249 9250 switch (message.what) { 9251 case WifiMonitor.WPS_SUCCESS_EVENT: 9252 // Ignore intermediate success, wait for full connection 9253 break; 9254 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9255 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9256 mSourceMessage.recycle(); 9257 mSourceMessage = null; 9258 deferMessage(message); 9259 transitionTo(mDisconnectedState); 9260 break; 9261 case WifiMonitor.WPS_OVERLAP_EVENT: 9262 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9263 WifiManager.WPS_OVERLAP_ERROR); 9264 mSourceMessage.recycle(); 9265 mSourceMessage = null; 9266 transitionTo(mDisconnectedState); 9267 break; 9268 case WifiMonitor.WPS_FAIL_EVENT: 9269 // Arg1 has the reason for the failure 9270 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9271 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9272 mSourceMessage.recycle(); 9273 mSourceMessage = null; 9274 transitionTo(mDisconnectedState); 9275 } else { 9276 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9277 } 9278 break; 9279 case WifiMonitor.WPS_TIMEOUT_EVENT: 9280 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9281 WifiManager.WPS_TIMED_OUT); 9282 mSourceMessage.recycle(); 9283 mSourceMessage = null; 9284 transitionTo(mDisconnectedState); 9285 break; 9286 case WifiManager.START_WPS: 9287 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9288 break; 9289 case WifiManager.CANCEL_WPS: 9290 if (mWifiNative.cancelWps()) { 9291 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9292 } else { 9293 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9294 } 9295 transitionTo(mDisconnectedState); 9296 break; 9297 /** 9298 * Defer all commands that can cause connections to a different network 9299 * or put the state machine out of connect mode 9300 */ 9301 case CMD_STOP_DRIVER: 9302 case CMD_SET_OPERATIONAL_MODE: 9303 case WifiManager.CONNECT_NETWORK: 9304 case CMD_ENABLE_NETWORK: 9305 case CMD_RECONNECT: 9306 case CMD_REASSOCIATE: 9307 case CMD_ENABLE_ALL_NETWORKS: 9308 deferMessage(message); 9309 break; 9310 case CMD_AUTO_CONNECT: 9311 case CMD_AUTO_ROAM: 9312 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9313 return HANDLED; 9314 case CMD_START_SCAN: 9315 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9316 return HANDLED; 9317 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9318 if (DBG) log("Network connection lost"); 9319 handleNetworkDisconnect(); 9320 break; 9321 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9322 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9323 break; 9324 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9325 // Disregard auth failure events during WPS connection. The 9326 // EAP sequence is retried several times, and there might be 9327 // failures (especially for wps pin). We will get a WPS_XXX 9328 // event at the end of the sequence anyway. 9329 if (DBG) log("Ignore auth failure during WPS connection"); 9330 break; 9331 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9332 // Throw away supplicant state changes when WPS is running. 9333 // We will start getting supplicant state changes once we get 9334 // a WPS success or failure 9335 break; 9336 default: 9337 return NOT_HANDLED; 9338 } 9339 return HANDLED; 9340 } 9341 9342 @Override 9343 public void exit() { 9344 mWifiConfigStore.enableAllNetworks(); 9345 mWifiConfigStore.loadConfiguredNetworks(); 9346 } 9347 } 9348 9349 class SoftApStartingState extends State { 9350 @Override 9351 public void enter() { 9352 final Message message = getCurrentMessage(); 9353 if (message.what == CMD_START_AP) { 9354 final WifiConfiguration config = (WifiConfiguration) message.obj; 9355 9356 if (config == null) { 9357 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9358 } else { 9359 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9360 startSoftApWithConfig(config); 9361 } 9362 } else { 9363 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9364 } 9365 } 9366 @Override 9367 public boolean processMessage(Message message) { 9368 logStateAndMessage(message, getClass().getSimpleName()); 9369 9370 switch(message.what) { 9371 case CMD_START_SUPPLICANT: 9372 case CMD_STOP_SUPPLICANT: 9373 case CMD_START_AP: 9374 case CMD_STOP_AP: 9375 case CMD_START_DRIVER: 9376 case CMD_STOP_DRIVER: 9377 case CMD_SET_OPERATIONAL_MODE: 9378 case CMD_SET_COUNTRY_CODE: 9379 case CMD_SET_FREQUENCY_BAND: 9380 case CMD_START_PACKET_FILTERING: 9381 case CMD_STOP_PACKET_FILTERING: 9382 case CMD_TETHER_STATE_CHANGE: 9383 deferMessage(message); 9384 break; 9385 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9386 WifiConfiguration config = (WifiConfiguration) message.obj; 9387 if (config != null) { 9388 startSoftApWithConfig(config); 9389 } else { 9390 loge("Softap config is null!"); 9391 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9392 } 9393 break; 9394 case CMD_START_AP_SUCCESS: 9395 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9396 transitionTo(mSoftApStartedState); 9397 break; 9398 case CMD_START_AP_FAILURE: 9399 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9400 transitionTo(mInitialState); 9401 break; 9402 default: 9403 return NOT_HANDLED; 9404 } 9405 return HANDLED; 9406 } 9407 } 9408 9409 class SoftApStartedState extends State { 9410 @Override 9411 public boolean processMessage(Message message) { 9412 logStateAndMessage(message, getClass().getSimpleName()); 9413 9414 switch(message.what) { 9415 case CMD_STOP_AP: 9416 if (DBG) log("Stopping Soft AP"); 9417 /* We have not tethered at this point, so we just shutdown soft Ap */ 9418 try { 9419 mNwService.stopAccessPoint(mInterfaceName); 9420 } catch(Exception e) { 9421 loge("Exception in stopAccessPoint()"); 9422 } 9423 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9424 transitionTo(mInitialState); 9425 break; 9426 case CMD_START_AP: 9427 // Ignore a start on a running access point 9428 break; 9429 // Fail client mode operation when soft AP is enabled 9430 case CMD_START_SUPPLICANT: 9431 loge("Cannot start supplicant with a running soft AP"); 9432 setWifiState(WIFI_STATE_UNKNOWN); 9433 break; 9434 case CMD_TETHER_STATE_CHANGE: 9435 TetherStateChange stateChange = (TetherStateChange) message.obj; 9436 if (startTethering(stateChange.available)) { 9437 transitionTo(mTetheringState); 9438 } 9439 break; 9440 default: 9441 return NOT_HANDLED; 9442 } 9443 return HANDLED; 9444 } 9445 } 9446 9447 class TetheringState extends State { 9448 @Override 9449 public void enter() { 9450 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9451 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9452 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9453 } 9454 @Override 9455 public boolean processMessage(Message message) { 9456 logStateAndMessage(message, getClass().getSimpleName()); 9457 9458 switch(message.what) { 9459 case CMD_TETHER_STATE_CHANGE: 9460 TetherStateChange stateChange = (TetherStateChange) message.obj; 9461 if (isWifiTethered(stateChange.active)) { 9462 transitionTo(mTetheredState); 9463 } 9464 return HANDLED; 9465 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9466 if (message.arg1 == mTetherToken) { 9467 loge("Failed to get tether update, shutdown soft access point"); 9468 transitionTo(mSoftApStartedState); 9469 // Needs to be first thing handled 9470 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9471 } 9472 break; 9473 case CMD_START_SUPPLICANT: 9474 case CMD_STOP_SUPPLICANT: 9475 case CMD_START_AP: 9476 case CMD_STOP_AP: 9477 case CMD_START_DRIVER: 9478 case CMD_STOP_DRIVER: 9479 case CMD_SET_OPERATIONAL_MODE: 9480 case CMD_SET_COUNTRY_CODE: 9481 case CMD_SET_FREQUENCY_BAND: 9482 case CMD_START_PACKET_FILTERING: 9483 case CMD_STOP_PACKET_FILTERING: 9484 deferMessage(message); 9485 break; 9486 default: 9487 return NOT_HANDLED; 9488 } 9489 return HANDLED; 9490 } 9491 } 9492 9493 class TetheredState extends State { 9494 @Override 9495 public boolean processMessage(Message message) { 9496 logStateAndMessage(message, getClass().getSimpleName()); 9497 9498 switch(message.what) { 9499 case CMD_TETHER_STATE_CHANGE: 9500 TetherStateChange stateChange = (TetherStateChange) message.obj; 9501 if (!isWifiTethered(stateChange.active)) { 9502 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9503 setHostApRunning(null, false); 9504 setHostApRunning(null, true); 9505 } 9506 return HANDLED; 9507 case CMD_STOP_AP: 9508 if (DBG) log("Untethering before stopping AP"); 9509 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9510 stopTethering(); 9511 transitionTo(mUntetheringState); 9512 // More work to do after untethering 9513 deferMessage(message); 9514 break; 9515 default: 9516 return NOT_HANDLED; 9517 } 9518 return HANDLED; 9519 } 9520 } 9521 9522 class UntetheringState extends State { 9523 @Override 9524 public void enter() { 9525 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9526 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9527 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9528 9529 } 9530 @Override 9531 public boolean processMessage(Message message) { 9532 logStateAndMessage(message, getClass().getSimpleName()); 9533 9534 switch(message.what) { 9535 case CMD_TETHER_STATE_CHANGE: 9536 TetherStateChange stateChange = (TetherStateChange) message.obj; 9537 9538 /* Wait till wifi is untethered */ 9539 if (isWifiTethered(stateChange.active)) break; 9540 9541 transitionTo(mSoftApStartedState); 9542 break; 9543 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9544 if (message.arg1 == mTetherToken) { 9545 loge("Failed to get tether update, force stop access point"); 9546 transitionTo(mSoftApStartedState); 9547 } 9548 break; 9549 case CMD_START_SUPPLICANT: 9550 case CMD_STOP_SUPPLICANT: 9551 case CMD_START_AP: 9552 case CMD_STOP_AP: 9553 case CMD_START_DRIVER: 9554 case CMD_STOP_DRIVER: 9555 case CMD_SET_OPERATIONAL_MODE: 9556 case CMD_SET_COUNTRY_CODE: 9557 case CMD_SET_FREQUENCY_BAND: 9558 case CMD_START_PACKET_FILTERING: 9559 case CMD_STOP_PACKET_FILTERING: 9560 deferMessage(message); 9561 break; 9562 default: 9563 return NOT_HANDLED; 9564 } 9565 return HANDLED; 9566 } 9567 } 9568 9569 /** 9570 * State machine initiated requests can have replyTo set to null indicating 9571 * there are no recepients, we ignore those reply actions. 9572 */ 9573 private void replyToMessage(Message msg, int what) { 9574 if (msg.replyTo == null) return; 9575 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9576 mReplyChannel.replyToMessage(msg, dstMsg); 9577 } 9578 9579 private void replyToMessage(Message msg, int what, int arg1) { 9580 if (msg.replyTo == null) return; 9581 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9582 dstMsg.arg1 = arg1; 9583 mReplyChannel.replyToMessage(msg, dstMsg); 9584 } 9585 9586 private void replyToMessage(Message msg, int what, Object obj) { 9587 if (msg.replyTo == null) return; 9588 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9589 dstMsg.obj = obj; 9590 mReplyChannel.replyToMessage(msg, dstMsg); 9591 } 9592 9593 /** 9594 * arg2 on the source message has a unique id that needs to be retained in replies 9595 * to match the request 9596 * <p>see WifiManager for details 9597 */ 9598 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9599 Message msg = Message.obtain(); 9600 msg.what = what; 9601 msg.arg2 = srcMsg.arg2; 9602 return msg; 9603 } 9604 9605 /** 9606 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9607 * @param msg Must have a WifiConfiguration obj to succeed 9608 */ 9609 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9610 WifiConfiguration config) { 9611 if (config != null && config.preSharedKey != null) { 9612 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9613 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9614 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9615 wifiCredentialEventType); 9616 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9617 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9618 } 9619 } 9620 9621 private static int parseHex(char ch) { 9622 if ('0' <= ch && ch <= '9') { 9623 return ch - '0'; 9624 } else if ('a' <= ch && ch <= 'f') { 9625 return ch - 'a' + 10; 9626 } else if ('A' <= ch && ch <= 'F') { 9627 return ch - 'A' + 10; 9628 } else { 9629 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9630 } 9631 } 9632 9633 private byte[] parseHex(String hex) { 9634 /* This only works for good input; don't throw bad data at it */ 9635 if (hex == null) { 9636 return new byte[0]; 9637 } 9638 9639 if (hex.length() % 2 != 0) { 9640 throw new NumberFormatException(hex + " is not a valid hex string"); 9641 } 9642 9643 byte[] result = new byte[(hex.length())/2 + 1]; 9644 result[0] = (byte) ((hex.length())/2); 9645 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9646 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9647 byte b = (byte) (val & 0xFF); 9648 result[j] = b; 9649 } 9650 9651 return result; 9652 } 9653 9654 private static String makeHex(byte[] bytes) { 9655 StringBuilder sb = new StringBuilder(); 9656 for (byte b : bytes) { 9657 sb.append(String.format("%02x", b)); 9658 } 9659 return sb.toString(); 9660 } 9661 9662 private static String makeHex(byte[] bytes, int from, int len) { 9663 StringBuilder sb = new StringBuilder(); 9664 for (int i = 0; i < len; i++) { 9665 sb.append(String.format("%02x", bytes[from+i])); 9666 } 9667 return sb.toString(); 9668 } 9669 9670 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9671 9672 int len = array1.length + array2.length + array3.length; 9673 9674 if (array1.length != 0) { 9675 len++; /* add another byte for size */ 9676 } 9677 9678 if (array2.length != 0) { 9679 len++; /* add another byte for size */ 9680 } 9681 9682 if (array3.length != 0) { 9683 len++; /* add another byte for size */ 9684 } 9685 9686 byte[] result = new byte[len]; 9687 9688 int index = 0; 9689 if (array1.length != 0) { 9690 result[index] = (byte) (array1.length & 0xFF); 9691 index++; 9692 for (byte b : array1) { 9693 result[index] = b; 9694 index++; 9695 } 9696 } 9697 9698 if (array2.length != 0) { 9699 result[index] = (byte) (array2.length & 0xFF); 9700 index++; 9701 for (byte b : array2) { 9702 result[index] = b; 9703 index++; 9704 } 9705 } 9706 9707 if (array3.length != 0) { 9708 result[index] = (byte) (array3.length & 0xFF); 9709 index++; 9710 for (byte b : array3) { 9711 result[index] = b; 9712 index++; 9713 } 9714 } 9715 return result; 9716 } 9717 9718 private static byte[] concatHex(byte[] array1, byte[] array2) { 9719 9720 int len = array1.length + array2.length; 9721 9722 byte[] result = new byte[len]; 9723 9724 int index = 0; 9725 if (array1.length != 0) { 9726 for (byte b : array1) { 9727 result[index] = b; 9728 index++; 9729 } 9730 } 9731 9732 if (array2.length != 0) { 9733 for (byte b : array2) { 9734 result[index] = b; 9735 index++; 9736 } 9737 } 9738 9739 return result; 9740 } 9741 9742 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9743 if (targetWificonfiguration == null 9744 || targetWificonfiguration.networkId == requestData.networkId) { 9745 logd("id matches targetWifiConfiguration"); 9746 } else { 9747 logd("id does not match targetWifiConfiguration"); 9748 return; 9749 } 9750 9751 TelephonyManager tm = (TelephonyManager) 9752 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9753 9754 if (tm != null) { 9755 StringBuilder sb = new StringBuilder(); 9756 for (String challenge : requestData.data) { 9757 9758 if (challenge == null || challenge.isEmpty()) 9759 continue; 9760 logd("RAND = " + challenge); 9761 9762 byte[] rand = null; 9763 try { 9764 rand = parseHex(challenge); 9765 } catch (NumberFormatException e) { 9766 loge("malformed challenge"); 9767 continue; 9768 } 9769 9770 String base64Challenge = android.util.Base64.encodeToString( 9771 rand, android.util.Base64.NO_WRAP); 9772 /* 9773 * First, try with appType = 2 => USIM according to 9774 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9775 */ 9776 int appType = 2; 9777 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9778 if (tmResponse == null) { 9779 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9780 * appType = 1 => SIM 9781 */ 9782 appType = 1; 9783 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9784 } 9785 logv("Raw Response - " + tmResponse); 9786 9787 if (tmResponse != null && tmResponse.length() > 4) { 9788 byte[] result = android.util.Base64.decode(tmResponse, 9789 android.util.Base64.DEFAULT); 9790 logv("Hex Response -" + makeHex(result)); 9791 int sres_len = result[0]; 9792 String sres = makeHex(result, 1, sres_len); 9793 int kc_offset = 1+sres_len; 9794 int kc_len = result[kc_offset]; 9795 String kc = makeHex(result, 1+kc_offset, kc_len); 9796 sb.append(":" + kc + ":" + sres); 9797 logv("kc:" + kc + " sres:" + sres); 9798 } else { 9799 loge("bad response - " + tmResponse); 9800 } 9801 } 9802 9803 String response = sb.toString(); 9804 logv("Supplicant Response -" + response); 9805 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9806 } else { 9807 loge("could not get telephony manager"); 9808 } 9809 } 9810 9811 void handle3GAuthRequest(SimAuthRequestData requestData) { 9812 StringBuilder sb = new StringBuilder(); 9813 byte[] rand = null; 9814 byte[] authn = null; 9815 String res_type = "UMTS-AUTH"; 9816 9817 if (targetWificonfiguration == null 9818 || targetWificonfiguration.networkId == requestData.networkId) { 9819 logd("id matches targetWifiConfiguration"); 9820 } else { 9821 logd("id does not match targetWifiConfiguration"); 9822 return; 9823 } 9824 if (requestData.data.length == 2) { 9825 try { 9826 rand = parseHex(requestData.data[0]); 9827 authn = parseHex(requestData.data[1]); 9828 } catch (NumberFormatException e) { 9829 loge("malformed challenge"); 9830 } 9831 } else { 9832 loge("malformed challenge"); 9833 } 9834 9835 String tmResponse = ""; 9836 if (rand != null && authn != null) { 9837 String base64Challenge = android.util.Base64.encodeToString( 9838 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9839 9840 TelephonyManager tm = (TelephonyManager) 9841 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9842 if (tm != null) { 9843 int appType = 2; // 2 => USIM 9844 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9845 logv("Raw Response - " + tmResponse); 9846 } else { 9847 loge("could not get telephony manager"); 9848 } 9849 } 9850 9851 if (tmResponse != null && tmResponse.length() > 4) { 9852 byte[] result = android.util.Base64.decode(tmResponse, 9853 android.util.Base64.DEFAULT); 9854 loge("Hex Response - " + makeHex(result)); 9855 byte tag = result[0]; 9856 if (tag == (byte) 0xdb) { 9857 logv("successful 3G authentication "); 9858 int res_len = result[1]; 9859 String res = makeHex(result, 2, res_len); 9860 int ck_len = result[res_len + 2]; 9861 String ck = makeHex(result, res_len + 3, ck_len); 9862 int ik_len = result[res_len + ck_len + 3]; 9863 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9864 sb.append(":" + ik + ":" + ck + ":" + res); 9865 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9866 } else if (tag == (byte) 0xdc) { 9867 loge("synchronisation failure"); 9868 int auts_len = result[1]; 9869 String auts = makeHex(result, 2, auts_len); 9870 res_type = "UMTS-AUTS"; 9871 sb.append(":" + auts); 9872 logv("auts:" + auts); 9873 } else { 9874 loge("bad response - unknown tag = " + tag); 9875 return; 9876 } 9877 } else { 9878 loge("bad response - " + tmResponse); 9879 return; 9880 } 9881 9882 String response = sb.toString(); 9883 logv("Supplicant Response -" + response); 9884 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9885 } 9886 9887 /** 9888 * @param reason reason code from supplicant on network disconnected event 9889 * @return true if this is a suspicious disconnect 9890 */ 9891 static boolean unexpectedDisconnectedReason(int reason) { 9892 return reason == 2 // PREV_AUTH_NOT_VALID 9893 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 9894 || reason == 7 // FRAME_FROM_NONASSOC_STA 9895 || reason == 8 // STA_HAS_LEFT 9896 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 9897 || reason == 14 // MICHAEL_MIC_FAILURE 9898 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 9899 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 9900 || reason == 18 // GROUP_CIPHER_NOT_VALID 9901 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 9902 || reason == 23 // IEEE_802_1X_AUTH_FAILED 9903 || reason == 34; // DISASSOC_LOW_ACK 9904 } 9905} 9906