WifiStateMachine.java revision e1e95ff407e7d5654f9b753ced04ff6ae8137d59
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.Arrays; 130import java.util.Calendar; 131import java.util.HashSet; 132import java.util.LinkedList; 133import java.util.List; 134import java.util.Locale; 135import java.util.Queue; 136import java.util.Random; 137import java.util.concurrent.atomic.AtomicBoolean; 138import java.util.concurrent.atomic.AtomicInteger; 139import java.util.regex.Pattern; 140 141/** 142 * Track the state of Wifi connectivity. All event handling is done here, 143 * and all changes in connectivity state are initiated here. 144 * 145 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 146 * In the current implementation, we support concurrent wifi p2p and wifi operation. 147 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 148 * handles p2p operation. 149 * 150 * @hide 151 */ 152public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler { 153 154 private static final String NETWORKTYPE = "WIFI"; 155 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 156 private static boolean DBG = false; 157 private static boolean VDBG = false; 158 private static boolean VVDBG = false; 159 private static boolean USE_PAUSE_SCANS = false; 160 private static boolean mLogMessages = false; 161 private static final String TAG = "WifiStateMachine"; 162 163 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 164 165 private static final String GOOGLE_OUI = "DA-A1-19"; 166 167 /* temporary debug flag - best network selection development */ 168 private static boolean PDBG = false; 169 170 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 171 * the corresponding BSSID. 172 */ 173 private boolean didBlackListBSSID = false; 174 175 /** 176 * Log with error attribute 177 * 178 * @param s is string log 179 */ 180 protected void loge(String s) { 181 Log.e(getName(), s); 182 } 183 protected void logd(String s) { 184 Log.d(getName(), s); 185 } 186 protected void log(String s) {; 187 Log.d(getName(), s); 188 } 189 190 private WifiMonitor mWifiMonitor; 191 private WifiNative mWifiNative; 192 private WifiConfigStore mWifiConfigStore; 193 private WifiAutoJoinController mWifiAutoJoinController; 194 private INetworkManagementService mNwService; 195 private ConnectivityManager mCm; 196 private WifiLogger mWifiLogger; 197 198 private final boolean mP2pSupported; 199 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 200 private boolean mTemporarilyDisconnectWifi = false; 201 private final String mPrimaryDeviceType; 202 203 /* Scan results handling */ 204 private List<ScanDetail> mScanResults = new ArrayList<>(); 205 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 206 private static final int SCAN_RESULT_CACHE_SIZE = 160; 207 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 208 // For debug, number of known scan results that were found as part of last scan result event, 209 // as well the number of scans results returned by the supplicant with that message 210 private int mNumScanResultsKnown; 211 private int mNumScanResultsReturned; 212 213 private boolean mScreenOn = false; 214 215 /* Chipset supports background scan */ 216 private final boolean mBackgroundScanSupported; 217 218 private final String mInterfaceName; 219 /* Tethering interface could be separate from wlan interface */ 220 private String mTetherInterfaceName; 221 222 private int mLastSignalLevel = -1; 223 private String mLastBssid; 224 private int mLastNetworkId; // The network Id we successfully joined 225 private boolean linkDebouncing = false; 226 227 private boolean mHalBasedPnoDriverSupported = false; 228 229 // Below booleans are configurations coming from the Developper Settings 230 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 231 private boolean mHalBasedPnoEnableInDevSettings = false; 232 233 234 private int mHalFeatureSet = 0; 235 private static int mPnoResultFound = 0; 236 237 @Override 238 public void onPnoNetworkFound(ScanResult results[]) { 239 if (DBG) { 240 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 241 for (int i = 0; i < results.length; i++) { 242 Log.e(TAG, results[i].toString()); 243 } 244 } 245 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 246 } 247 248 public void processPnoNetworkFound(ScanResult results[]) { 249 ScanSettings settings = new ScanSettings(); 250 settings.channelSet = new ArrayList<WifiChannel>(); 251 StringBuilder sb = new StringBuilder(); 252 sb.append(""); 253 for (int i=0; i<results.length; i++) { 254 WifiChannel channel = new WifiChannel(); 255 channel.freqMHz = results[i].frequency; 256 settings.channelSet.add(channel); 257 sb.append(results[i].SSID).append(" "); 258 } 259 260 stopPnoOffload(); 261 262 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 263 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 264 mPnoResultFound ++; 265 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 266 int delay = 30 * 1000; 267 // reconfigure Pno after 1 minutes if we're still in disconnected state 268 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 269 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 270 (long)delay); 271 mRestartAutoJoinOffloadCounter++; 272 } 273 274 public void registerNetworkDisabled(int netId) { 275 // Restart legacy PNO and autojoin offload if needed 276 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 277 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 278 mRestartAutoJoinOffloadCounter++; 279 } 280 281 // Testing various network disconnect cases by sending lots of spurious 282 // disconnect to supplicant 283 private boolean testNetworkDisconnect = false; 284 285 private boolean mEnableRssiPolling = false; 286 private boolean mLegacyPnoEnabled = false; 287 private int mRssiPollToken = 0; 288 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 289 * In CONNECT_MODE, the STA can scan and connect to an access point 290 * In SCAN_ONLY_MODE, the STA can only scan for access points 291 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 292 */ 293 private int mOperationalMode = CONNECT_MODE; 294 private boolean mIsScanOngoing = false; 295 private boolean mIsFullScanOngoing = false; 296 private boolean mSendScanResultsBroadcast = false; 297 298 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 299 private WorkSource mScanWorkSource = null; 300 private static final int UNKNOWN_SCAN_SOURCE = -1; 301 private static final int SCAN_ALARM_SOURCE = -2; 302 private static final int ADD_OR_UPDATE_SOURCE = -3; 303 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 304 private static final int ENABLE_WIFI = -5; 305 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 306 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 307 308 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 309 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 310 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 311 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 312 313 /* Tracks if state machine has received any screen state change broadcast yet. 314 * We can miss one of these at boot. 315 */ 316 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 317 318 private boolean mBluetoothConnectionActive = false; 319 320 private PowerManager.WakeLock mSuspendWakeLock; 321 322 /** 323 * Interval in milliseconds between polling for RSSI 324 * and linkspeed information 325 */ 326 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 327 328 /** 329 * Interval in milliseconds between receiving a disconnect event 330 * while connected to a good AP, and handling the disconnect proper 331 */ 332 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 333 334 /** 335 * Delay between supplicant restarts upon failure to establish connection 336 */ 337 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 338 339 /** 340 * Number of times we attempt to restart supplicant 341 */ 342 private static final int SUPPLICANT_RESTART_TRIES = 5; 343 344 private int mSupplicantRestartCount = 0; 345 /* Tracks sequence number on stop failure message */ 346 private int mSupplicantStopFailureToken = 0; 347 348 /** 349 * Tether state change notification time out 350 */ 351 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 352 353 /* Tracks sequence number on a tether notification time out */ 354 private int mTetherToken = 0; 355 356 /** 357 * Driver start time out. 358 */ 359 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 360 361 /* Tracks sequence number on a driver time out */ 362 private int mDriverStartToken = 0; 363 364 /** 365 * The link properties of the wifi interface. 366 * Do not modify this directly; use updateLinkProperties instead. 367 */ 368 private LinkProperties mLinkProperties; 369 370 /* Tracks sequence number on a periodic scan message */ 371 private int mPeriodicScanToken = 0; 372 373 // Wakelock held during wifi start/stop and driver load/unload 374 private PowerManager.WakeLock mWakeLock; 375 376 private Context mContext; 377 378 private final Object mDhcpResultsLock = new Object(); 379 private DhcpResults mDhcpResults; 380 381 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 382 private WifiInfo mWifiInfo; 383 private NetworkInfo mNetworkInfo; 384 private NetworkCapabilities mNetworkCapabilities; 385 private SupplicantStateTracker mSupplicantStateTracker; 386 private BaseDhcpStateMachine mDhcpStateMachine; 387 private boolean mDhcpActive = false; 388 389 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 390 391 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 392 393 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 394 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 395 396 // Roaming failure count 397 private int mRoamFailCount = 0; 398 399 // This is the BSSID we are trying to associate to, it can be set to "any" 400 // if we havent selected a BSSID for joining. 401 // if we havent selected a BSSID for joining. 402 // The BSSID we are associated to is found in mWifiInfo 403 private String mTargetRoamBSSID = "any"; 404 405 private long mLastDriverRoamAttempt = 0; 406 407 private WifiConfiguration targetWificonfiguration = null; 408 409 // Used as debug to indicate which configuration last was saved 410 private WifiConfiguration lastSavedConfigurationAttempt = null; 411 412 // Used as debug to indicate which configuration last was removed 413 private WifiConfiguration lastForgetConfigurationAttempt = null; 414 415 //Random used by softAP channel Selection 416 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 417 418 boolean isRoaming() { 419 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 420 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 421 } 422 423 public void autoRoamSetBSSID(int netId, String bssid) { 424 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 425 } 426 427 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 428 boolean ret = true; 429 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 430 if (bssid == null) bssid = "any"; 431 if (config == null) return false; // Nothing to do 432 433 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 434 return false; // We didnt change anything 435 } 436 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 437 // Changing to ANY 438 if (!mWifiConfigStore.roamOnAny) { 439 ret = false; // Nothing to do 440 } 441 } 442 if (VDBG) { 443 loge("autoRoamSetBSSID " + bssid 444 + " key=" + config.configKey()); 445 } 446 config.autoJoinBSSID = bssid; 447 mTargetRoamBSSID = bssid; 448 mWifiConfigStore.saveWifiConfigBSSID(config); 449 return ret; 450 } 451 452 /** 453 * Save the UID correctly depending on if this is a new or existing network. 454 * @return true if operation is authorized, false otherwise 455 */ 456 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 457 if (!mWifiConfigStore.isNetworkConfigured(config)) { 458 config.creatorUid = uid; 459 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 460 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 461 return false; 462 } 463 464 config.lastUpdateUid = uid; 465 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 466 467 return true; 468 469 } 470 471 /** 472 * Checks to see if user has specified if the apps configuration is connectable. 473 * If the user hasn't specified we query the user and return true. 474 * 475 * @param message The message to be deferred 476 * @param netId Network id of the configuration to check against 477 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 478 * CONFIG_OVERRIDE_PERMISSION 479 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 480 */ 481 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 482 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 483 484 // We can only evaluate saved configurations. 485 if (config == null) { 486 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 487 return true; 488 } 489 490 switch (config.userApproved) { 491 case WifiConfiguration.USER_APPROVED: 492 case WifiConfiguration.USER_BANNED: 493 return false; 494 case WifiConfiguration.USER_PENDING: 495 default: // USER_UNSPECIFIED 496 /* the intention was to ask user here; but a dialog box is * 497 * too invasive; so we are going to allow connection for now */ 498 config.userApproved = WifiConfiguration.USER_APPROVED; 499 return false; 500 } 501 } 502 503 /** 504 * Subset of link properties coming from netlink. 505 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 506 * and domains obtained from router advertisements (RFC 6106). 507 */ 508 private NetlinkTracker mNetlinkTracker; 509 510 private IpReachabilityMonitor mIpReachabilityMonitor; 511 512 private AlarmManager mAlarmManager; 513 private PendingIntent mScanIntent; 514 private PendingIntent mDriverStopIntent; 515 private PendingIntent mPnoIntent; 516 517 private int mDisconnectedPnoAlarmCount = 0; 518 /* Tracks current frequency mode */ 519 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 520 521 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 522 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 523 524 // Channel for sending replies. 525 private AsyncChannel mReplyChannel = new AsyncChannel(); 526 527 private WifiP2pServiceImpl mWifiP2pServiceImpl; 528 529 // Used to initiate a connection with WifiP2pService 530 private AsyncChannel mWifiP2pChannel; 531 private AsyncChannel mWifiApConfigChannel; 532 533 private WifiScanner mWifiScanner; 534 535 private int mConnectionRequests = 0; 536 private WifiNetworkFactory mNetworkFactory; 537 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 538 private WifiNetworkAgent mNetworkAgent; 539 540 private String[] mWhiteListedSsids = null; 541 542 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 543 // We should really persist that into the networkHistory.txt file, and read it back when 544 // WifiStateMachine starts up 545 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 546 547 // Used to filter out requests we couldn't possibly satisfy. 548 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 549 550 /* The base for wifi message types */ 551 static final int BASE = Protocol.BASE_WIFI; 552 /* Start the supplicant */ 553 static final int CMD_START_SUPPLICANT = BASE + 11; 554 /* Stop the supplicant */ 555 static final int CMD_STOP_SUPPLICANT = BASE + 12; 556 /* Start the driver */ 557 static final int CMD_START_DRIVER = BASE + 13; 558 /* Stop the driver */ 559 static final int CMD_STOP_DRIVER = BASE + 14; 560 /* Indicates Static IP succeeded */ 561 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 562 /* Indicates Static IP failed */ 563 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 564 /* Indicates supplicant stop failed */ 565 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 566 /* Delayed stop to avoid shutting down driver too quick*/ 567 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 568 /* A delayed message sent to start driver when it fail to come up */ 569 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 570 571 /* Start the soft access point */ 572 static final int CMD_START_AP = BASE + 21; 573 /* Indicates soft ap start succeeded */ 574 static final int CMD_START_AP_SUCCESS = BASE + 22; 575 /* Indicates soft ap start failed */ 576 static final int CMD_START_AP_FAILURE = BASE + 23; 577 /* Stop the soft access point */ 578 static final int CMD_STOP_AP = BASE + 24; 579 /* Set the soft access point configuration */ 580 static final int CMD_SET_AP_CONFIG = BASE + 25; 581 /* Soft access point configuration set completed */ 582 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 583 /* Request the soft access point configuration */ 584 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 585 /* Response to access point configuration request */ 586 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 587 /* Invoked when getting a tether state change notification */ 588 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 589 /* A delayed message sent to indicate tether state change failed to arrive */ 590 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 591 592 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 593 594 /* Supplicant commands */ 595 /* Is supplicant alive ? */ 596 static final int CMD_PING_SUPPLICANT = BASE + 51; 597 /* Add/update a network configuration */ 598 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 599 /* Delete a network */ 600 static final int CMD_REMOVE_NETWORK = BASE + 53; 601 /* Enable a network. The device will attempt a connection to the given network. */ 602 static final int CMD_ENABLE_NETWORK = BASE + 54; 603 /* Enable all networks */ 604 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 605 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 606 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 607 /* Clear the blacklist network list */ 608 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 609 /* Save configuration */ 610 static final int CMD_SAVE_CONFIG = BASE + 58; 611 /* Get configured networks */ 612 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 613 /* Get available frequencies */ 614 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 615 /* Get adaptors */ 616 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 617 /* Get configured networks with real preSharedKey */ 618 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 619 /* Get Link Layer Stats thru HAL */ 620 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 621 /* Supplicant commands after driver start*/ 622 /* Initiate a scan */ 623 static final int CMD_START_SCAN = BASE + 71; 624 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 625 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 626 /* Disconnect from a network */ 627 static final int CMD_DISCONNECT = BASE + 73; 628 /* Reconnect to a network */ 629 static final int CMD_RECONNECT = BASE + 74; 630 /* Reassociate to a network */ 631 static final int CMD_REASSOCIATE = BASE + 75; 632 /* Get Connection Statistis */ 633 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 634 635 /* Controls suspend mode optimizations 636 * 637 * When high perf mode is enabled, suspend mode optimizations are disabled 638 * 639 * When high perf mode is disabled, suspend mode optimizations are enabled 640 * 641 * Suspend mode optimizations include: 642 * - packet filtering 643 * - turn off roaming 644 * - DTIM wake up settings 645 */ 646 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 647 /* Set the country code */ 648 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 649 /* Enables RSSI poll */ 650 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 651 /* RSSI poll */ 652 static final int CMD_RSSI_POLL = BASE + 83; 653 /* Set up packet filtering */ 654 static final int CMD_START_PACKET_FILTERING = BASE + 84; 655 /* Clear packet filter */ 656 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 657 /* Enable suspend mode optimizations in the driver */ 658 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 659 /* Delayed NETWORK_DISCONNECT */ 660 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 661 /* When there are no saved networks, we do a periodic scan to notify user of 662 * an open network */ 663 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 664 /* Test network Disconnection NETWORK_DISCONNECT */ 665 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 666 667 private int testNetworkDisconnectCounter = 0; 668 669 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 670 static final int MULTICAST_V6 = 1; 671 static final int MULTICAST_V4 = 0; 672 673 /* Set the frequency band */ 674 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 675 /* Enable TDLS on a specific MAC address */ 676 static final int CMD_ENABLE_TDLS = BASE + 92; 677 /* DHCP/IP configuration watchdog */ 678 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 679 680 /** 681 * Watchdog for protecting against b/16823537 682 * Leave time for 4-way handshake to succeed 683 */ 684 static final int ROAM_GUARD_TIMER_MSEC = 15000; 685 686 int roamWatchdogCount = 0; 687 /* Roam state watchdog */ 688 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 689 /* Screen change intent handling */ 690 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 691 692 /* Disconnecting state watchdog */ 693 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 694 695 /* Remove a packages associated configrations */ 696 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 697 698 /* Disable an ephemeral network */ 699 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 700 701 /* Get matching network */ 702 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 703 704 /* alert from firmware */ 705 static final int CMD_FIRMWARE_ALERT = BASE + 100; 706 707 /** 708 * Make this timer 40 seconds, which is about the normal DHCP timeout. 709 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 710 * for more than 30 seconds. 711 */ 712 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 713 714 int obtainingIpWatchdogCount = 0; 715 716 /* Commands from/to the SupplicantStateTracker */ 717 /* Reset the supplicant state tracker */ 718 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 719 720 int disconnectingWatchdogCount = 0; 721 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 722 723 /* P2p commands */ 724 /* We are ok with no response here since we wont do much with it anyway */ 725 public static final int CMD_ENABLE_P2P = BASE + 131; 726 /* In order to shut down supplicant cleanly, we wait till p2p has 727 * been disabled */ 728 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 729 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 730 731 public static final int CMD_BOOT_COMPLETED = BASE + 134; 732 733 /* We now have a valid IP configuration. */ 734 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 735 /* We no longer have a valid IP configuration. */ 736 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 737 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 738 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 739 740 /* Supplicant is trying to associate to a given BSSID */ 741 static final int CMD_TARGET_BSSID = BASE + 141; 742 743 /* Reload all networks and reconnect */ 744 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 745 746 static final int CMD_AUTO_CONNECT = BASE + 143; 747 748 static final int network_status_unwanted_disconnect = 0; 749 static final int network_status_unwanted_disable_autojoin = 1; 750 751 static final int CMD_UNWANTED_NETWORK = BASE + 144; 752 753 static final int CMD_AUTO_ROAM = BASE + 145; 754 755 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 756 757 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 758 759 static final int CMD_NETWORK_STATUS = BASE + 148; 760 761 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 762 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 763 764 /* Remove a packages associated configrations */ 765 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 766 767 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 768 769 /* used to restart PNO when it was stopped due to association attempt */ 770 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 771 772 static int mRestartAutoJoinOffloadCounter = 0; 773 774 /* used to log if PNO was started */ 775 static final int CMD_STARTED_PNO_DBG = BASE + 155; 776 777 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 778 779 /* used to log if PNO was started */ 780 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 781 782 /* used to log if GSCAN was started */ 783 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 784 785 786 /* Wifi state machine modes of operation */ 787 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 788 public static final int CONNECT_MODE = 1; 789 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 790 public static final int SCAN_ONLY_MODE = 2; 791 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 792 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 793 794 private static final int SUCCESS = 1; 795 private static final int FAILURE = -1; 796 797 /* Tracks if suspend optimizations need to be disabled by DHCP, 798 * screen or due to high perf mode. 799 * When any of them needs to disable it, we keep the suspend optimizations 800 * disabled 801 */ 802 private int mSuspendOptNeedsDisabled = 0; 803 804 private static final int SUSPEND_DUE_TO_DHCP = 1; 805 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 806 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 807 808 /* Tracks if user has enabled suspend optimizations through settings */ 809 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 810 811 /** 812 * Default framework scan interval in milliseconds. This is used in the scenario in which 813 * wifi chipset does not support background scanning to set up a 814 * periodic wake up scan so that the device can connect to a new access 815 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 816 * override this. 817 */ 818 private final int mDefaultFrameworkScanIntervalMs; 819 820 821 /** 822 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 823 */ 824 private final int mNoNetworksPeriodicScan; 825 826 /** 827 * Supplicant scan interval in milliseconds. 828 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 829 * from the default config if the setting is not set 830 */ 831 private long mSupplicantScanIntervalMs; 832 833 /** 834 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 835 */ 836 private long lastFullBandConnectedTimeMilli; 837 838 /** 839 * time interval to the next full band scan we will perform for 840 * autojoin while connected with screen lit 841 */ 842 private long fullBandConnectedTimeIntervalMilli; 843 844 /** 845 * max time interval to the next full band scan we will perform for 846 * autojoin while connected with screen lit 847 * Max time is 5 minutes 848 */ 849 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 850 851 /** 852 * Minimum time interval between enabling all networks. 853 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 854 * due to enabling every time. We add a threshold to avoid this. 855 */ 856 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 857 private long mLastEnableAllNetworksTime; 858 859 int mRunningBeaconCount = 0; 860 861 /** 862 * Starting and shutting down driver too quick causes problems leading to driver 863 * being in a bad state. Delay driver stop. 864 */ 865 private final int mDriverStopDelayMs; 866 private int mDelayedStopCounter; 867 private boolean mInDelayedStop = false; 868 869 // there is a delay between StateMachine change country code and Supplicant change country code 870 // here save the current WifiStateMachine set country code 871 private volatile String mSetCountryCode = null; 872 873 // Supplicant doesn't like setting the same country code multiple times (it may drop 874 // currently connected network), so we save the current device set country code here to avoid 875 // redundency 876 private String mDriverSetCountryCode = null; 877 878 /* Default parent state */ 879 private State mDefaultState = new DefaultState(); 880 /* Temporary initial state */ 881 private State mInitialState = new InitialState(); 882 /* Driver loaded, waiting for supplicant to start */ 883 private State mSupplicantStartingState = new SupplicantStartingState(); 884 /* Driver loaded and supplicant ready */ 885 private State mSupplicantStartedState = new SupplicantStartedState(); 886 /* Waiting for supplicant to stop and monitor to exit */ 887 private State mSupplicantStoppingState = new SupplicantStoppingState(); 888 /* Driver start issued, waiting for completed event */ 889 private State mDriverStartingState = new DriverStartingState(); 890 /* Driver started */ 891 private State mDriverStartedState = new DriverStartedState(); 892 /* Wait until p2p is disabled 893 * This is a special state which is entered right after we exit out of DriverStartedState 894 * before transitioning to another state. 895 */ 896 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 897 /* Driver stopping */ 898 private State mDriverStoppingState = new DriverStoppingState(); 899 /* Driver stopped */ 900 private State mDriverStoppedState = new DriverStoppedState(); 901 /* Scan for networks, no connection will be established */ 902 private State mScanModeState = new ScanModeState(); 903 /* Connecting to an access point */ 904 private State mConnectModeState = new ConnectModeState(); 905 /* Connected at 802.11 (L2) level */ 906 private State mL2ConnectedState = new L2ConnectedState(); 907 /* fetching IP after connection to access point (assoc+auth complete) */ 908 private State mObtainingIpState = new ObtainingIpState(); 909 /* Waiting for link quality verification to be complete */ 910 private State mVerifyingLinkState = new VerifyingLinkState(); 911 /* Connected with IP addr */ 912 private State mConnectedState = new ConnectedState(); 913 /* Roaming */ 914 private State mRoamingState = new RoamingState(); 915 /* disconnect issued, waiting for network disconnect confirmation */ 916 private State mDisconnectingState = new DisconnectingState(); 917 /* Network is not connected, supplicant assoc+auth is not complete */ 918 private State mDisconnectedState = new DisconnectedState(); 919 /* Waiting for WPS to be completed*/ 920 private State mWpsRunningState = new WpsRunningState(); 921 922 /* Soft ap is starting up */ 923 private State mSoftApStartingState = new SoftApStartingState(); 924 /* Soft ap is running */ 925 private State mSoftApStartedState = new SoftApStartedState(); 926 /* Soft ap is running and we are waiting for tether notification */ 927 private State mTetheringState = new TetheringState(); 928 /* Soft ap is running and we are tethered through connectivity service */ 929 private State mTetheredState = new TetheredState(); 930 /* Waiting for untether confirmation before stopping soft Ap */ 931 private State mUntetheringState = new UntetheringState(); 932 933 934 935 private class WifiScanListener implements WifiScanner.ScanListener { 936 @Override 937 public void onSuccess() { 938 Log.e(TAG, "WifiScanListener onSuccess"); 939 }; 940 @Override 941 public void onFailure(int reason, String description) { 942 Log.e(TAG, "WifiScanListener onFailure"); 943 }; 944 @Override 945 public void onPeriodChanged(int periodInMs) { 946 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 947 } 948 @Override 949 public void onResults(WifiScanner.ScanData[] results) { 950 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 951 } 952 @Override 953 public void onFullResult(ScanResult fullScanResult) { 954 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 955 } 956 957 WifiScanListener() {} 958 } 959 960 WifiScanListener mWifiScanListener = new WifiScanListener(); 961 962 963 private class TetherStateChange { 964 ArrayList<String> available; 965 ArrayList<String> active; 966 967 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 968 available = av; 969 active = ac; 970 } 971 } 972 973 public static class SimAuthRequestData { 974 int networkId; 975 int protocol; 976 String ssid; 977 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 978 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 979 String[] data; 980 } 981 982 /** 983 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 984 * {@link WifiManager#WIFI_STATE_DISABLING}, 985 * {@link WifiManager#WIFI_STATE_ENABLED}, 986 * {@link WifiManager#WIFI_STATE_ENABLING}, 987 * {@link WifiManager#WIFI_STATE_UNKNOWN} 988 */ 989 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 990 991 /** 992 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 993 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 994 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 995 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 996 * {@link WifiManager#WIFI_AP_STATE_FAILED} 997 */ 998 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 999 1000 private static final int SCAN_REQUEST = 0; 1001 private static final String ACTION_START_SCAN = 1002 "com.android.server.WifiManager.action.START_SCAN"; 1003 1004 private static final int PNO_START_REQUEST = 0; 1005 private static final String ACTION_START_PNO = 1006 "com.android.server.WifiManager.action.START_PNO"; 1007 1008 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1009 private static final int DRIVER_STOP_REQUEST = 0; 1010 private static final String ACTION_DELAYED_DRIVER_STOP = 1011 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1012 1013 /** 1014 * Keep track of whether WIFI is running. 1015 */ 1016 private boolean mIsRunning = false; 1017 1018 /** 1019 * Keep track of whether we last told the battery stats we had started. 1020 */ 1021 private boolean mReportedRunning = false; 1022 1023 /** 1024 * Most recently set source of starting WIFI. 1025 */ 1026 private final WorkSource mRunningWifiUids = new WorkSource(); 1027 1028 /** 1029 * The last reported UIDs that were responsible for starting WIFI. 1030 */ 1031 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1032 1033 private final IBatteryStats mBatteryStats; 1034 1035 private String mTcpBufferSizes = null; 1036 1037 // Used for debug and stats gathering 1038 private static int sScanAlarmIntentCount = 0; 1039 1040 final static int frameworkMinScanIntervalSaneValue = 10000; 1041 1042 boolean mPnoEnabled; 1043 boolean mLazyRoamEnabled; 1044 long mGScanStartTimeMilli; 1045 long mGScanPeriodMilli; 1046 1047 public WifiStateMachine(Context context, String wlanInterface, 1048 WifiTrafficPoller trafficPoller) { 1049 super("WifiStateMachine"); 1050 mContext = context; 1051 mSetCountryCode = Settings.Global.getString( 1052 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1053 mInterfaceName = wlanInterface; 1054 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1055 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1056 BatteryStats.SERVICE_NAME)); 1057 1058 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1059 mNwService = INetworkManagementService.Stub.asInterface(b); 1060 1061 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1062 PackageManager.FEATURE_WIFI_DIRECT); 1063 1064 mWifiNative = new WifiNative(mInterfaceName); 1065 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1066 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1067 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1068 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1069 mWifiLogger = new WifiLogger(this); 1070 1071 mWifiInfo = new WifiInfo(); 1072 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1073 getHandler()); 1074 mLinkProperties = new LinkProperties(); 1075 1076 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1077 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1078 1079 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1080 1081 mNetworkInfo.setIsAvailable(false); 1082 mLastBssid = null; 1083 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1084 mLastSignalLevel = -1; 1085 1086 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1087 public void update() { 1088 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1089 } 1090 }); 1091 try { 1092 mNwService.registerObserver(mNetlinkTracker); 1093 } catch (RemoteException e) { 1094 loge("Couldn't register netlink tracker: " + e.toString()); 1095 } 1096 1097 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1098 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1099 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1100 1101 // Make sure the interval is not configured less than 10 seconds 1102 int period = mContext.getResources().getInteger( 1103 R.integer.config_wifi_framework_scan_interval); 1104 if (period < frameworkMinScanIntervalSaneValue) { 1105 period = frameworkMinScanIntervalSaneValue; 1106 } 1107 mDefaultFrameworkScanIntervalMs = period; 1108 1109 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1110 R.integer.config_wifi_no_network_periodic_scan_interval); 1111 1112 mDriverStopDelayMs = mContext.getResources().getInteger( 1113 R.integer.config_wifi_driver_stop_delay); 1114 1115 mBackgroundScanSupported = mContext.getResources().getBoolean( 1116 R.bool.config_wifi_background_scan_support); 1117 1118 mPrimaryDeviceType = mContext.getResources().getString( 1119 R.string.config_wifi_p2p_device_type); 1120 1121 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1122 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1123 1124 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1125 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1126 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1127 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1128 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1129 // TODO - needs to be a bit more dynamic 1130 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1131 1132 mContext.registerReceiver( 1133 new BroadcastReceiver() { 1134 @Override 1135 public void onReceive(Context context, Intent intent) { 1136 ArrayList<String> available = intent.getStringArrayListExtra( 1137 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1138 ArrayList<String> active = intent.getStringArrayListExtra( 1139 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1140 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1141 } 1142 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1143 1144 mContext.registerReceiver( 1145 new BroadcastReceiver() { 1146 @Override 1147 public void onReceive(Context context, Intent intent) { 1148 sScanAlarmIntentCount++; // Used for debug only 1149 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1150 if (VDBG) 1151 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1152 } 1153 }, 1154 new IntentFilter(ACTION_START_SCAN)); 1155 1156 mContext.registerReceiver( 1157 new BroadcastReceiver() { 1158 @Override 1159 public void onReceive(Context context, Intent intent) { 1160 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1161 mRestartAutoJoinOffloadCounter, "pno alarm"); 1162 if (DBG) 1163 loge("WiFiStateMachine PNO START ALARM sent"); 1164 } 1165 }, 1166 new IntentFilter(ACTION_START_PNO)); 1167 1168 1169 IntentFilter filter = new IntentFilter(); 1170 filter.addAction(Intent.ACTION_SCREEN_ON); 1171 filter.addAction(Intent.ACTION_SCREEN_OFF); 1172 mContext.registerReceiver( 1173 new BroadcastReceiver() { 1174 @Override 1175 public void onReceive(Context context, Intent intent) { 1176 String action = intent.getAction(); 1177 1178 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1179 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1180 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1181 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1182 } 1183 } 1184 }, filter); 1185 1186 mContext.registerReceiver( 1187 new BroadcastReceiver() { 1188 @Override 1189 public void onReceive(Context context, Intent intent) { 1190 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1191 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1192 } 1193 }, 1194 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1195 1196 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1197 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1198 new ContentObserver(getHandler()) { 1199 @Override 1200 public void onChange(boolean selfChange) { 1201 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1202 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1203 } 1204 }); 1205 1206 mContext.registerReceiver( 1207 new BroadcastReceiver() { 1208 @Override 1209 public void onReceive(Context context, Intent intent) { 1210 sendMessage(CMD_BOOT_COMPLETED); 1211 } 1212 }, 1213 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1214 1215 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1216 1217 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1218 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1219 1220 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1221 mSuspendWakeLock.setReferenceCounted(false); 1222 1223 mTcpBufferSizes = mContext.getResources().getString( 1224 com.android.internal.R.string.config_wifi_tcp_buffers); 1225 1226 addState(mDefaultState); 1227 addState(mInitialState, mDefaultState); 1228 addState(mSupplicantStartingState, mDefaultState); 1229 addState(mSupplicantStartedState, mDefaultState); 1230 addState(mDriverStartingState, mSupplicantStartedState); 1231 addState(mDriverStartedState, mSupplicantStartedState); 1232 addState(mScanModeState, mDriverStartedState); 1233 addState(mConnectModeState, mDriverStartedState); 1234 addState(mL2ConnectedState, mConnectModeState); 1235 addState(mObtainingIpState, mL2ConnectedState); 1236 addState(mVerifyingLinkState, mL2ConnectedState); 1237 addState(mConnectedState, mL2ConnectedState); 1238 addState(mRoamingState, mL2ConnectedState); 1239 addState(mDisconnectingState, mConnectModeState); 1240 addState(mDisconnectedState, mConnectModeState); 1241 addState(mWpsRunningState, mConnectModeState); 1242 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1243 addState(mDriverStoppingState, mSupplicantStartedState); 1244 addState(mDriverStoppedState, mSupplicantStartedState); 1245 addState(mSupplicantStoppingState, mDefaultState); 1246 addState(mSoftApStartingState, mDefaultState); 1247 addState(mSoftApStartedState, mDefaultState); 1248 addState(mTetheringState, mSoftApStartedState); 1249 addState(mTetheredState, mSoftApStartedState); 1250 addState(mUntetheringState, mSoftApStartedState); 1251 1252 setInitialState(mInitialState); 1253 1254 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1255 setLogOnlyTransitions(false); 1256 if (VDBG) setDbg(true); 1257 1258 //start the state machine 1259 start(); 1260 1261 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1262 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1263 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1264 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1265 } 1266 1267 1268 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1269 Intent intent = new Intent(action, null); 1270 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1271 //intent.setPackage(this.getClass().getPackage().getName()); 1272 intent.setPackage("android"); 1273 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1274 } 1275 1276 private int mVerboseLoggingLevel = 0; 1277 1278 int getVerboseLoggingLevel() { 1279 return mVerboseLoggingLevel; 1280 } 1281 1282 void enableVerboseLogging(int verbose) { 1283 mVerboseLoggingLevel = verbose; 1284 if (verbose > 0) { 1285 DBG = true; 1286 VDBG = true; 1287 PDBG = true; 1288 mLogMessages = true; 1289 mWifiNative.setSupplicantLogLevel("DEBUG"); 1290 } else { 1291 DBG = false; 1292 VDBG = false; 1293 PDBG = false; 1294 mLogMessages = false; 1295 mWifiNative.setSupplicantLogLevel("INFO"); 1296 } 1297 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1298 mWifiAutoJoinController.enableVerboseLogging(verbose); 1299 mWifiMonitor.enableVerboseLogging(verbose); 1300 mWifiNative.enableVerboseLogging(verbose); 1301 mWifiConfigStore.enableVerboseLogging(verbose); 1302 mSupplicantStateTracker.enableVerboseLogging(verbose); 1303 } 1304 1305 public void setHalBasedAutojoinOffload(int enabled) { 1306 // Shoult be used for debug only, triggered form developper settings 1307 // enabling HAl based PNO dynamically is not safe and not a normal operation 1308 mHalBasedPnoEnableInDevSettings = enabled > 0; 1309 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1310 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1311 sendMessage(CMD_DISCONNECT); 1312 } 1313 1314 public void setAllowNetworkSwitchingWhileAssociated(int enabled) { 1315 mEnableAssociatedNetworkSwitchingInDevSettings = enabled > 0; 1316 } 1317 1318 int getHalBasedAutojoinOffload() { 1319 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1320 } 1321 1322 int getAllowNetworkSwitchingWhileAssociated() { 1323 return mEnableAssociatedNetworkSwitchingInDevSettings ? 1 : 0; 1324 } 1325 1326 boolean useHalBasedAutoJoinOffload() { 1327 // all three settings need to be true: 1328 // - developper settings switch 1329 // - driver support 1330 // - config option 1331 return mHalBasedPnoEnableInDevSettings 1332 && mHalBasedPnoDriverSupported 1333 && mWifiConfigStore.enableHalBasedPno.get(); 1334 } 1335 1336 boolean allowFullBandScanAndAssociated() { 1337 1338 if (!mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 1339 if (DBG) { 1340 Log.e(TAG, "allowFullBandScanAndAssociated: " 1341 + " enableAutoJoinScanWhenAssociated : disallow"); 1342 } 1343 return false; 1344 } 1345 1346 if (mWifiInfo.txSuccessRate > 1347 mWifiConfigStore.maxTxPacketForFullScans 1348 || mWifiInfo.rxSuccessRate > 1349 mWifiConfigStore.maxRxPacketForFullScans) { 1350 if (DBG) { 1351 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1352 + mWifiInfo.txSuccessRate + " rx " 1353 + mWifiInfo.rxSuccessRate 1354 + " allow scan with traffic " + getAllowScansWithTraffic()); 1355 } 1356 // Too much traffic at the interface, hence no full band scan 1357 if (getAllowScansWithTraffic() == 0) { 1358 return false; 1359 } 1360 } 1361 1362 if (getCurrentState() != mConnectedState) { 1363 if (DBG) { 1364 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1365 } 1366 return false; 1367 } 1368 1369 return true; 1370 } 1371 1372 long mLastScanPermissionUpdate = 0; 1373 boolean mConnectedModeGScanOffloadStarted = false; 1374 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1375 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1376 // we want to throttle the GScan Stop->Start transition 1377 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1378 void updateAssociatedScanPermission() { 1379 1380 if (useHalBasedAutoJoinOffload()) { 1381 boolean allowed = allowFullBandScanAndAssociated(); 1382 1383 long now = System.currentTimeMillis(); 1384 if (mConnectedModeGScanOffloadStarted && !allowed) { 1385 if (DBG) { 1386 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1387 } 1388 stopPnoOffload(); 1389 stopGScan(" useHalBasedAutoJoinOffload"); 1390 } 1391 if (!mConnectedModeGScanOffloadStarted && allowed) { 1392 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1393 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1394 // to look for 5GHz BSSIDs and better networks 1395 if (DBG) { 1396 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1397 } 1398 startGScanConnectedModeOffload("updatePermission " 1399 + (now - mLastScanPermissionUpdate) + "ms"); 1400 mLastScanPermissionUpdate = now; 1401 } 1402 } 1403 } 1404 } 1405 1406 private int mAggressiveHandover = 0; 1407 1408 int getAggressiveHandover() { 1409 return mAggressiveHandover; 1410 } 1411 1412 void enableAggressiveHandover(int enabled) { 1413 mAggressiveHandover = enabled; 1414 } 1415 1416 public void clearANQPCache() { 1417 mWifiConfigStore.trimANQPCache(true); 1418 } 1419 1420 public void setAllowScansWithTraffic(int enabled) { 1421 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1422 } 1423 1424 public int getAllowScansWithTraffic() { 1425 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1426 } 1427 1428 public void setAllowScansWhileAssociated(int enabled) { 1429 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled > 0 ? true : false); 1430 } 1431 1432 public int getAllowScansWhileAssociated() { 1433 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get() ? 1 : 0; 1434 } 1435 1436 /* 1437 * 1438 * Framework scan control 1439 */ 1440 1441 private boolean mAlarmEnabled = false; 1442 1443 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1444 1445 private void setScanAlarm(boolean enabled) { 1446 if (PDBG) { 1447 String state; 1448 if (enabled) state = "enabled"; else state = "disabled"; 1449 loge("setScanAlarm " + state 1450 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1451 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1452 } 1453 if (mBackgroundScanSupported == false) { 1454 // Scan alarm is only used for background scans if they are not 1455 // offloaded to the wifi chipset, hence enable the scan alarm 1456 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1457 enabled = true; 1458 } 1459 1460 if (enabled == mAlarmEnabled) return; 1461 if (enabled) { 1462 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1463 /* going to wake up the host processor to look for access points */ 1464 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1465 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1466 mScanIntent); 1467 mAlarmEnabled = true; 1468 } else { 1469 mAlarmManager.cancel(mScanIntent); 1470 mAlarmEnabled = false; 1471 } 1472 } 1473 1474 private void cancelDelayedScan() { 1475 mDelayedScanCounter.incrementAndGet(); 1476 } 1477 1478 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1479 ScanSettings settings, WorkSource workSource) { 1480 1481 if (counter != mDelayedScanCounter.get()) { 1482 return false; 1483 } 1484 if (restart) 1485 startDelayedScan(milli, settings, workSource); 1486 return true; 1487 } 1488 1489 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1490 if (milli <= 0) return; 1491 /** 1492 * The cases where the scan alarm should be run are : 1493 * - DisconnectedState && screenOn => used delayed timer 1494 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1495 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1496 * - ConnectedState && screenOn => used delayed timer 1497 */ 1498 1499 mDelayedScanCounter.incrementAndGet(); 1500 if (mScreenOn && 1501 (getCurrentState() == mDisconnectedState 1502 || getCurrentState() == mConnectedState)) { 1503 Bundle bundle = new Bundle(); 1504 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1505 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1506 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1507 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1508 mDelayedScanCounter.get(), bundle, milli); 1509 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1510 } else if (mBackgroundScanSupported == false 1511 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1512 setScanAlarm(true); 1513 if (DBG) loge("startDelayedScan start scan alarm -> " 1514 + mDelayedScanCounter + " milli " + milli); 1515 } else { 1516 if (DBG) loge("startDelayedScan unhandled -> " 1517 + mDelayedScanCounter + " milli " + milli); 1518 } 1519 } 1520 1521 private boolean setRandomMacOui() { 1522 String oui = mContext.getResources().getString( 1523 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1524 String[] ouiParts = oui.split("-"); 1525 byte[] ouiBytes = new byte[3]; 1526 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1527 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1528 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1529 1530 logd("Setting OUI to " + oui); 1531 return mWifiNative.setScanningMacOui(ouiBytes); 1532 } 1533 1534 /** 1535 * ****************************************************** 1536 * Methods exposed for public use 1537 * ****************************************************** 1538 */ 1539 1540 public Messenger getMessenger() { 1541 return new Messenger(getHandler()); 1542 } 1543 1544 public WifiMonitor getWifiMonitor() { 1545 return mWifiMonitor; 1546 } 1547 1548 /** 1549 * TODO: doc 1550 */ 1551 public boolean syncPingSupplicant(AsyncChannel channel) { 1552 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1553 boolean result = (resultMsg.arg1 != FAILURE); 1554 resultMsg.recycle(); 1555 return result; 1556 } 1557 1558 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1559 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1560 List<WifiChannel> list = null; 1561 if (resultMsg.obj != null) { 1562 list = new ArrayList<WifiChannel>(); 1563 String freqs = (String) resultMsg.obj; 1564 String[] lines = freqs.split("\n"); 1565 for (String line : lines) 1566 if (line.contains("MHz")) { 1567 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1568 WifiChannel c = new WifiChannel(); 1569 String[] prop = line.split(" "); 1570 if (prop.length < 5) continue; 1571 try { 1572 c.channelNum = Integer.parseInt(prop[1]); 1573 c.freqMHz = Integer.parseInt(prop[3]); 1574 } catch (NumberFormatException e) { 1575 } 1576 c.isDFS = line.contains("(DFS)"); 1577 list.add(c); 1578 } else if (line.contains("Mode[B] Channels:")) { 1579 // B channels are the same as G channels, skipped 1580 break; 1581 } 1582 } 1583 resultMsg.recycle(); 1584 return (list != null && list.size() > 0) ? list : null; 1585 } 1586 1587 /** 1588 * When settings allowing making use of untrusted networks change, trigger a scan 1589 * so as to kick of autojoin. 1590 */ 1591 public void startScanForUntrustedSettingChange() { 1592 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1593 } 1594 1595 /** 1596 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1597 * given to callingUid. 1598 * 1599 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1600 * workSource is specified. 1601 * @param workSource If not null, blame is given to workSource. 1602 * @param settings Scan settings, see {@link ScanSettings}. 1603 */ 1604 public void startScan(int callingUid, int scanCounter, 1605 ScanSettings settings, WorkSource workSource) { 1606 Bundle bundle = new Bundle(); 1607 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1608 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1609 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1610 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1611 } 1612 1613 // called from BroadcastListener 1614 1615 /** 1616 * Start reading new scan data 1617 * Data comes in as: 1618 * "scancount=5\n" 1619 * "nextcount=5\n" 1620 * "apcount=3\n" 1621 * "trunc\n" (optional) 1622 * "bssid=...\n" 1623 * "ssid=...\n" 1624 * "freq=...\n" (in Mhz) 1625 * "level=...\n" 1626 * "dist=...\n" (in cm) 1627 * "distsd=...\n" (standard deviation, in cm) 1628 * "====" 1629 * "bssid=...\n" 1630 * etc 1631 * "====" 1632 * "bssid=...\n" 1633 * etc 1634 * "%%%%" 1635 * "apcount=2\n" 1636 * "bssid=...\n" 1637 * etc 1638 * "%%%% 1639 * etc 1640 * "----" 1641 */ 1642 private final static boolean DEBUG_PARSE = false; 1643 1644 private long mDisconnectedTimeStamp = 0; 1645 1646 public long getDisconnectedTimeMilli() { 1647 if (getCurrentState() == mDisconnectedState 1648 && mDisconnectedTimeStamp != 0) { 1649 long now_ms = System.currentTimeMillis(); 1650 return now_ms - mDisconnectedTimeStamp; 1651 } 1652 return 0; 1653 } 1654 1655 // Keeping track of scan requests 1656 private long lastStartScanTimeStamp = 0; 1657 private long lastScanDuration = 0; 1658 // Last connect attempt is used to prevent scan requests: 1659 // - for a period of 10 seconds after attempting to connect 1660 private long lastConnectAttempt = 0; 1661 private String lastScanFreqs = null; 1662 1663 // For debugging, keep track of last message status handling 1664 // TODO, find an equivalent mechanism as part of parent class 1665 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1666 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1667 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1668 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1669 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1670 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1671 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1672 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1673 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1674 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1675 1676 private int messageHandlingStatus = 0; 1677 1678 //TODO: this is used only to track connection attempts, however the link state and packet per 1679 //TODO: second logic should be folded into that 1680 private boolean checkOrDeferScanAllowed(Message msg) { 1681 long now = System.currentTimeMillis(); 1682 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1683 Message dmsg = Message.obtain(msg); 1684 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1685 return false; 1686 } 1687 return true; 1688 } 1689 1690 private int mOnTime = 0; 1691 private int mTxTime = 0; 1692 private int mRxTime = 0; 1693 private int mOnTimeStartScan = 0; 1694 private int mTxTimeStartScan = 0; 1695 private int mRxTimeStartScan = 0; 1696 private int mOnTimeScan = 0; 1697 private int mTxTimeScan = 0; 1698 private int mRxTimeScan = 0; 1699 private int mOnTimeThisScan = 0; 1700 private int mTxTimeThisScan = 0; 1701 private int mRxTimeThisScan = 0; 1702 1703 private int mOnTimeScreenStateChange = 0; 1704 private int mOnTimeAtLastReport = 0; 1705 private long lastOntimeReportTimeStamp = 0; 1706 private long lastScreenStateChangeTimeStamp = 0; 1707 private int mOnTimeLastReport = 0; 1708 private int mTxTimeLastReport = 0; 1709 private int mRxTimeLastReport = 0; 1710 1711 private long lastLinkLayerStatsUpdate = 0; 1712 1713 String reportOnTime() { 1714 long now = System.currentTimeMillis(); 1715 StringBuilder sb = new StringBuilder(); 1716 // Report stats since last report 1717 int on = mOnTime - mOnTimeLastReport; 1718 mOnTimeLastReport = mOnTime; 1719 int tx = mTxTime - mTxTimeLastReport; 1720 mTxTimeLastReport = mTxTime; 1721 int rx = mRxTime - mRxTimeLastReport; 1722 mRxTimeLastReport = mRxTime; 1723 int period = (int) (now - lastOntimeReportTimeStamp); 1724 lastOntimeReportTimeStamp = now; 1725 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1726 // Report stats since Screen State Changed 1727 on = mOnTime - mOnTimeScreenStateChange; 1728 period = (int) (now - lastScreenStateChangeTimeStamp); 1729 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1730 return sb.toString(); 1731 } 1732 1733 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1734 WifiLinkLayerStats stats = null; 1735 if (mWifiLinkLayerStatsSupported > 0) { 1736 String name = "wlan0"; 1737 stats = mWifiNative.getWifiLinkLayerStats(name); 1738 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1739 mWifiLinkLayerStatsSupported -= 1; 1740 } else if (stats != null) { 1741 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1742 mOnTime = stats.on_time; 1743 mTxTime = stats.tx_time; 1744 mRxTime = stats.rx_time; 1745 mRunningBeaconCount = stats.beacon_rx; 1746 if (dbg) { 1747 // loge(stats.toString()); 1748 } 1749 } 1750 } 1751 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1752 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1753 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1754 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1755 } else { 1756 mWifiInfo.updatePacketRates(stats); 1757 } 1758 if (useHalBasedAutoJoinOffload()) { 1759 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1760 } 1761 return stats; 1762 } 1763 1764 void startRadioScanStats() { 1765 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1766 if (stats != null) { 1767 mOnTimeStartScan = stats.on_time; 1768 mTxTimeStartScan = stats.tx_time; 1769 mRxTimeStartScan = stats.rx_time; 1770 mOnTime = stats.on_time; 1771 mTxTime = stats.tx_time; 1772 mRxTime = stats.rx_time; 1773 } 1774 } 1775 1776 void closeRadioScanStats() { 1777 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1778 if (stats != null) { 1779 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1780 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1781 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1782 mOnTimeScan += mOnTimeThisScan; 1783 mTxTimeScan += mTxTimeThisScan; 1784 mRxTimeScan += mRxTimeThisScan; 1785 } 1786 } 1787 1788 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1789 private void noteScanStart(int callingUid, WorkSource workSource) { 1790 long now = System.currentTimeMillis(); 1791 lastStartScanTimeStamp = now; 1792 lastScanDuration = 0; 1793 if (DBG) { 1794 String ts = String.format("[%,d ms]", now); 1795 if (workSource != null) { 1796 loge(ts + " noteScanStart" + workSource.toString() 1797 + " uid " + Integer.toString(callingUid)); 1798 } else { 1799 loge(ts + " noteScanstart no scan source" 1800 + " uid " + Integer.toString(callingUid)); 1801 } 1802 } 1803 startRadioScanStats(); 1804 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1805 && callingUid != SCAN_ALARM_SOURCE) 1806 || workSource != null)) { 1807 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1808 1809 WorkSource batteryWorkSource = mScanWorkSource; 1810 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1811 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1812 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1813 } 1814 1815 try { 1816 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1817 } catch (RemoteException e) { 1818 log(e.toString()); 1819 } 1820 } 1821 } 1822 1823 private void noteScanEnd() { 1824 long now = System.currentTimeMillis(); 1825 if (lastStartScanTimeStamp != 0) { 1826 lastScanDuration = now - lastStartScanTimeStamp; 1827 } 1828 lastStartScanTimeStamp = 0; 1829 if (DBG) { 1830 String ts = String.format("[%,d ms]", now); 1831 if (mScanWorkSource != null) 1832 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1833 + " onTime=" + mOnTimeThisScan); 1834 else 1835 loge(ts + " noteScanEnd no scan source" 1836 + " onTime=" + mOnTimeThisScan); 1837 } 1838 if (mScanWorkSource != null) { 1839 try { 1840 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1841 } catch (RemoteException e) { 1842 log(e.toString()); 1843 } finally { 1844 mScanWorkSource = null; 1845 } 1846 } 1847 } 1848 1849 private void handleScanRequest(int type, Message message) { 1850 ScanSettings settings = null; 1851 WorkSource workSource = null; 1852 1853 // unbundle parameters 1854 Bundle bundle = (Bundle) message.obj; 1855 1856 if (bundle != null) { 1857 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1858 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1859 } 1860 1861 // parse scan settings 1862 String freqs = null; 1863 if (settings != null && settings.channelSet != null) { 1864 StringBuilder sb = new StringBuilder(); 1865 boolean first = true; 1866 for (WifiChannel channel : settings.channelSet) { 1867 if (!first) sb.append(','); 1868 else first = false; 1869 sb.append(channel.freqMHz); 1870 } 1871 freqs = sb.toString(); 1872 } 1873 1874 // call wifi native to start the scan 1875 if (startScanNative(type, freqs)) { 1876 // only count battery consumption if scan request is accepted 1877 noteScanStart(message.arg1, workSource); 1878 // a full scan covers everything, clearing scan request buffer 1879 if (freqs == null) 1880 mBufferedScanMsg.clear(); 1881 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1882 if (workSource != null) { 1883 // External worksource was passed along the scan request, 1884 // hence always send a broadcast 1885 mSendScanResultsBroadcast = true; 1886 } 1887 return; 1888 } 1889 1890 // if reach here, scan request is rejected 1891 1892 if (!mIsScanOngoing) { 1893 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1894 1895 // discard this request and pop up the next one 1896 if (mBufferedScanMsg.size() > 0) { 1897 sendMessage(mBufferedScanMsg.remove()); 1898 } 1899 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1900 } else if (!mIsFullScanOngoing) { 1901 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1902 // buffer the scan request to make sure specified channels will be scanned eventually 1903 if (freqs == null) 1904 mBufferedScanMsg.clear(); 1905 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1906 Message msg = obtainMessage(CMD_START_SCAN, 1907 message.arg1, message.arg2, bundle); 1908 mBufferedScanMsg.add(msg); 1909 } else { 1910 // if too many requests in buffer, combine them into a single full scan 1911 bundle = new Bundle(); 1912 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1913 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1914 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1915 mBufferedScanMsg.clear(); 1916 mBufferedScanMsg.add(msg); 1917 } 1918 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1919 } else { 1920 // mIsScanOngoing and mIsFullScanOngoing 1921 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1922 } 1923 } 1924 1925 1926 /** 1927 * return true iff scan request is accepted 1928 */ 1929 private boolean startScanNative(int type, String freqs) { 1930 if (mWifiNative.scan(type, freqs)) { 1931 mIsScanOngoing = true; 1932 mIsFullScanOngoing = (freqs == null); 1933 lastScanFreqs = freqs; 1934 return true; 1935 } 1936 return false; 1937 } 1938 1939 /** 1940 * TODO: doc 1941 */ 1942 public void setSupplicantRunning(boolean enable) { 1943 if (enable) { 1944 sendMessage(CMD_START_SUPPLICANT); 1945 } else { 1946 sendMessage(CMD_STOP_SUPPLICANT); 1947 } 1948 } 1949 1950 /** 1951 * TODO: doc 1952 */ 1953 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1954 if (enable) { 1955 sendMessage(CMD_START_AP, wifiConfig); 1956 } else { 1957 sendMessage(CMD_STOP_AP); 1958 } 1959 } 1960 1961 public void setWifiApConfiguration(WifiConfiguration config) { 1962 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1963 } 1964 1965 public WifiConfiguration syncGetWifiApConfiguration() { 1966 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1967 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1968 resultMsg.recycle(); 1969 return ret; 1970 } 1971 1972 /** 1973 * TODO: doc 1974 */ 1975 public int syncGetWifiState() { 1976 return mWifiState.get(); 1977 } 1978 1979 /** 1980 * TODO: doc 1981 */ 1982 public String syncGetWifiStateByName() { 1983 switch (mWifiState.get()) { 1984 case WIFI_STATE_DISABLING: 1985 return "disabling"; 1986 case WIFI_STATE_DISABLED: 1987 return "disabled"; 1988 case WIFI_STATE_ENABLING: 1989 return "enabling"; 1990 case WIFI_STATE_ENABLED: 1991 return "enabled"; 1992 case WIFI_STATE_UNKNOWN: 1993 return "unknown state"; 1994 default: 1995 return "[invalid state]"; 1996 } 1997 } 1998 1999 /** 2000 * TODO: doc 2001 */ 2002 public int syncGetWifiApState() { 2003 return mWifiApState.get(); 2004 } 2005 2006 /** 2007 * TODO: doc 2008 */ 2009 public String syncGetWifiApStateByName() { 2010 switch (mWifiApState.get()) { 2011 case WIFI_AP_STATE_DISABLING: 2012 return "disabling"; 2013 case WIFI_AP_STATE_DISABLED: 2014 return "disabled"; 2015 case WIFI_AP_STATE_ENABLING: 2016 return "enabling"; 2017 case WIFI_AP_STATE_ENABLED: 2018 return "enabled"; 2019 case WIFI_AP_STATE_FAILED: 2020 return "failed"; 2021 default: 2022 return "[invalid state]"; 2023 } 2024 } 2025 2026 /** 2027 * Get status information for the current connection, if any. 2028 * 2029 * @return a {@link WifiInfo} object containing information about the current connection 2030 */ 2031 public WifiInfo syncRequestConnectionInfo() { 2032 return getWiFiInfoForUid(Binder.getCallingUid()); 2033 } 2034 2035 public DhcpResults syncGetDhcpResults() { 2036 synchronized (mDhcpResultsLock) { 2037 return new DhcpResults(mDhcpResults); 2038 } 2039 } 2040 2041 /** 2042 * TODO: doc 2043 */ 2044 public void setDriverStart(boolean enable) { 2045 if (enable) { 2046 sendMessage(CMD_START_DRIVER); 2047 } else { 2048 sendMessage(CMD_STOP_DRIVER); 2049 } 2050 } 2051 2052 /** 2053 * TODO: doc 2054 */ 2055 public void setOperationalMode(int mode) { 2056 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2057 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2058 } 2059 2060 /** 2061 * TODO: doc 2062 */ 2063 public List<ScanResult> syncGetScanResultsList() { 2064 synchronized (mScanResultCache) { 2065 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2066 for (ScanDetail result : mScanResults) { 2067 scanList.add(new ScanResult(result.getScanResult())); 2068 } 2069 return scanList; 2070 } 2071 } 2072 2073 public void disableEphemeralNetwork(String SSID) { 2074 if (SSID != null) { 2075 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2076 } 2077 } 2078 2079 /** 2080 * Get unsynchronized pointer to scan result list 2081 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2082 */ 2083 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2084 return mScanResults; 2085 } 2086 2087 /** 2088 * Disconnect from Access Point 2089 */ 2090 public void disconnectCommand() { 2091 sendMessage(CMD_DISCONNECT); 2092 } 2093 2094 public void disconnectCommand(int uid, int reason) { 2095 sendMessage(CMD_DISCONNECT, uid, reason); 2096 } 2097 2098 /** 2099 * Initiate a reconnection to AP 2100 */ 2101 public void reconnectCommand() { 2102 sendMessage(CMD_RECONNECT); 2103 } 2104 2105 /** 2106 * Initiate a re-association to AP 2107 */ 2108 public void reassociateCommand() { 2109 sendMessage(CMD_REASSOCIATE); 2110 } 2111 2112 /** 2113 * Reload networks and then reconnect; helps load correct data for TLS networks 2114 */ 2115 2116 public void reloadTlsNetworksAndReconnect() { 2117 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2118 } 2119 2120 /** 2121 * Add a network synchronously 2122 * 2123 * @return network id of the new network 2124 */ 2125 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2126 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2127 int result = resultMsg.arg1; 2128 resultMsg.recycle(); 2129 return result; 2130 } 2131 2132 /** 2133 * Get configured networks synchronously 2134 * 2135 * @param channel 2136 * @return 2137 */ 2138 2139 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2140 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2141 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2142 resultMsg.recycle(); 2143 return result; 2144 } 2145 2146 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2147 Message resultMsg = channel.sendMessageSynchronously( 2148 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2149 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2150 resultMsg.recycle(); 2151 return result; 2152 } 2153 2154 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2155 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2156 return (WifiConfiguration) resultMsg.obj; 2157 } 2158 2159 /** 2160 * Get connection statistics synchronously 2161 * 2162 * @param channel 2163 * @return 2164 */ 2165 2166 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2167 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2168 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2169 resultMsg.recycle(); 2170 return result; 2171 } 2172 2173 /** 2174 * Get adaptors synchronously 2175 */ 2176 2177 public int syncGetSupportedFeatures(AsyncChannel channel) { 2178 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2179 int supportedFeatureSet = resultMsg.arg1; 2180 resultMsg.recycle(); 2181 return supportedFeatureSet; 2182 } 2183 2184 /** 2185 * Get link layers stats for adapter synchronously 2186 */ 2187 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2188 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2189 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2190 resultMsg.recycle(); 2191 return result; 2192 } 2193 2194 /** 2195 * Delete a network 2196 * 2197 * @param networkId id of the network to be removed 2198 */ 2199 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2200 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2201 boolean result = (resultMsg.arg1 != FAILURE); 2202 resultMsg.recycle(); 2203 return result; 2204 } 2205 2206 /** 2207 * Enable a network 2208 * 2209 * @param netId network id of the network 2210 * @param disableOthers true, if all other networks have to be disabled 2211 * @return {@code true} if the operation succeeds, {@code false} otherwise 2212 */ 2213 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2214 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2215 disableOthers ? 1 : 0); 2216 boolean result = (resultMsg.arg1 != FAILURE); 2217 resultMsg.recycle(); 2218 return result; 2219 } 2220 2221 /** 2222 * Disable a network 2223 * 2224 * @param netId network id of the network 2225 * @return {@code true} if the operation succeeds, {@code false} otherwise 2226 */ 2227 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2228 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2229 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2230 resultMsg.recycle(); 2231 return result; 2232 } 2233 2234 /** 2235 * Retrieves a WPS-NFC configuration token for the specified network 2236 * 2237 * @return a hex string representation of the WPS-NFC configuration token 2238 */ 2239 public String syncGetWpsNfcConfigurationToken(int netId) { 2240 return mWifiNative.getNfcWpsConfigurationToken(netId); 2241 } 2242 2243 void enableBackgroundScan(boolean enable) { 2244 if (enable) { 2245 mWifiConfigStore.enableAllNetworks(); 2246 } 2247 boolean ret = mWifiNative.enableBackgroundScan(enable); 2248 if (ret) { 2249 mLegacyPnoEnabled = enable; 2250 } else { 2251 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2252 } 2253 } 2254 2255 /** 2256 * Blacklist a BSSID. This will avoid the AP if there are 2257 * alternate APs to connect 2258 * 2259 * @param bssid BSSID of the network 2260 */ 2261 public void addToBlacklist(String bssid) { 2262 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2263 } 2264 2265 /** 2266 * Clear the blacklist list 2267 */ 2268 public void clearBlacklist() { 2269 sendMessage(CMD_CLEAR_BLACKLIST); 2270 } 2271 2272 public void enableRssiPolling(boolean enabled) { 2273 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2274 } 2275 2276 public void enableAllNetworks() { 2277 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2278 } 2279 2280 /** 2281 * Start filtering Multicast v4 packets 2282 */ 2283 public void startFilteringMulticastV4Packets() { 2284 mFilteringMulticastV4Packets.set(true); 2285 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2286 } 2287 2288 /** 2289 * Stop filtering Multicast v4 packets 2290 */ 2291 public void stopFilteringMulticastV4Packets() { 2292 mFilteringMulticastV4Packets.set(false); 2293 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2294 } 2295 2296 /** 2297 * Start filtering Multicast v4 packets 2298 */ 2299 public void startFilteringMulticastV6Packets() { 2300 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2301 } 2302 2303 /** 2304 * Stop filtering Multicast v4 packets 2305 */ 2306 public void stopFilteringMulticastV6Packets() { 2307 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2308 } 2309 2310 /** 2311 * Set high performance mode of operation. 2312 * Enabling would set active power mode and disable suspend optimizations; 2313 * disabling would set auto power mode and enable suspend optimizations 2314 * 2315 * @param enable true if enable, false otherwise 2316 */ 2317 public void setHighPerfModeEnabled(boolean enable) { 2318 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2319 } 2320 2321 /** 2322 * Set the country code 2323 * 2324 * @param countryCode following ISO 3166 format 2325 * @param persist {@code true} if the setting should be remembered. 2326 */ 2327 public synchronized void setCountryCode(String countryCode, boolean persist) { 2328 // If it's a good country code, apply after the current 2329 // wifi connection is terminated; ignore resetting of code 2330 // for now (it is unclear what the chipset should do when 2331 // country code is reset) 2332 2333 if (TextUtils.isEmpty(countryCode)) { 2334 log("Ignoring resetting of country code"); 2335 } else { 2336 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2337 // else only when the new country code is different from the current one to set 2338 int countryCodeSequence = mCountryCodeSequence.get(); 2339 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2340 2341 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2342 mSetCountryCode = countryCode; 2343 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2344 countryCode); 2345 } 2346 2347 if (persist) { 2348 Settings.Global.putString(mContext.getContentResolver(), 2349 Settings.Global.WIFI_COUNTRY_CODE, 2350 countryCode); 2351 } 2352 } 2353 } 2354 2355 /** 2356 * Get Network object of current wifi network 2357 * @return Network object of current wifi network 2358 */ 2359 public Network getCurrentNetwork() { 2360 if (mNetworkAgent != null) { 2361 return new Network(mNetworkAgent.netId); 2362 } else { 2363 return null; 2364 } 2365 } 2366 2367 /** 2368 * Get the country code 2369 * 2370 * @param countryCode following ISO 3166 format 2371 */ 2372 public String getCountryCode() { 2373 return mSetCountryCode; 2374 } 2375 2376 2377 /** 2378 * Set the operational frequency band 2379 * 2380 * @param band 2381 * @param persist {@code true} if the setting should be remembered. 2382 */ 2383 public void setFrequencyBand(int band, boolean persist) { 2384 if (persist) { 2385 Settings.Global.putInt(mContext.getContentResolver(), 2386 Settings.Global.WIFI_FREQUENCY_BAND, 2387 band); 2388 } 2389 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2390 } 2391 2392 /** 2393 * Enable TDLS for a specific MAC address 2394 */ 2395 public void enableTdls(String remoteMacAddress, boolean enable) { 2396 int enabler = enable ? 1 : 0; 2397 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2398 } 2399 2400 /** 2401 * Returns the operational frequency band 2402 */ 2403 public int getFrequencyBand() { 2404 return mFrequencyBand.get(); 2405 } 2406 2407 /** 2408 * Returns the wifi configuration file 2409 */ 2410 public String getConfigFile() { 2411 return mWifiConfigStore.getConfigFile(); 2412 } 2413 2414 /** 2415 * Send a message indicating bluetooth adapter connection state changed 2416 */ 2417 public void sendBluetoothAdapterStateChange(int state) { 2418 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2419 } 2420 2421 /** 2422 * Send a message indicating a package has been uninstalled. 2423 */ 2424 public void removeAppConfigs(String packageName, int uid) { 2425 // Build partial AppInfo manually - package may not exist in database any more 2426 ApplicationInfo ai = new ApplicationInfo(); 2427 ai.packageName = packageName; 2428 ai.uid = uid; 2429 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2430 } 2431 2432 /** 2433 * Send a message indicating a user has been removed. 2434 */ 2435 public void removeUserConfigs(int userId) { 2436 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2437 } 2438 2439 /** 2440 * Save configuration on supplicant 2441 * 2442 * @return {@code true} if the operation succeeds, {@code false} otherwise 2443 * <p/> 2444 * TODO: deprecate this 2445 */ 2446 public boolean syncSaveConfig(AsyncChannel channel) { 2447 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2448 boolean result = (resultMsg.arg1 != FAILURE); 2449 resultMsg.recycle(); 2450 return result; 2451 } 2452 2453 public void updateBatteryWorkSource(WorkSource newSource) { 2454 synchronized (mRunningWifiUids) { 2455 try { 2456 if (newSource != null) { 2457 mRunningWifiUids.set(newSource); 2458 } 2459 if (mIsRunning) { 2460 if (mReportedRunning) { 2461 // If the work source has changed since last time, need 2462 // to remove old work from battery stats. 2463 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2464 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2465 mRunningWifiUids); 2466 mLastRunningWifiUids.set(mRunningWifiUids); 2467 } 2468 } else { 2469 // Now being started, report it. 2470 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2471 mLastRunningWifiUids.set(mRunningWifiUids); 2472 mReportedRunning = true; 2473 } 2474 } else { 2475 if (mReportedRunning) { 2476 // Last reported we were running, time to stop. 2477 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2478 mLastRunningWifiUids.clear(); 2479 mReportedRunning = false; 2480 } 2481 } 2482 mWakeLock.setWorkSource(newSource); 2483 } catch (RemoteException ignore) { 2484 } 2485 } 2486 } 2487 2488 @Override 2489 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2490 super.dump(fd, pw, args); 2491 mSupplicantStateTracker.dump(fd, pw, args); 2492 pw.println("mLinkProperties " + mLinkProperties); 2493 pw.println("mWifiInfo " + mWifiInfo); 2494 pw.println("mDhcpResults " + mDhcpResults); 2495 pw.println("mNetworkInfo " + mNetworkInfo); 2496 pw.println("mLastSignalLevel " + mLastSignalLevel); 2497 pw.println("mLastBssid " + mLastBssid); 2498 pw.println("mLastNetworkId " + mLastNetworkId); 2499 pw.println("mOperationalMode " + mOperationalMode); 2500 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2501 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2502 pw.println("Supplicant status " + mWifiNative.status(true)); 2503 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2504 pw.println("mSetCountryCode " + mSetCountryCode); 2505 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2506 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2507 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2508 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2509 pw.println("SSID whitelist :" ); 2510 for (int i=0; i < mWhiteListedSsids.length; i++) { 2511 pw.println(" " + mWhiteListedSsids[i]); 2512 } 2513 } 2514 mNetworkFactory.dump(fd, pw, args); 2515 mUntrustedNetworkFactory.dump(fd, pw, args); 2516 pw.println(); 2517 mWifiConfigStore.dump(fd, pw, args); 2518 pw.println(); 2519 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2520 mWifiLogger.dump(fd, pw, args); 2521 } 2522 2523 /** 2524 * ****************************************************** 2525 * Internal private functions 2526 * ****************************************************** 2527 */ 2528 2529 private void logStateAndMessage(Message message, String state) { 2530 messageHandlingStatus = 0; 2531 if (mLogMessages) { 2532 //long now = SystemClock.elapsedRealtimeNanos(); 2533 //String ts = String.format("[%,d us]", now/1000); 2534 2535 loge(" " + state + " " + getLogRecString(message)); 2536 } 2537 } 2538 2539 /** 2540 * helper, prints the milli time since boot wi and w/o suspended time 2541 */ 2542 String printTime() { 2543 StringBuilder sb = new StringBuilder(); 2544 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2545 sb.append("/").append(SystemClock.elapsedRealtime()); 2546 return sb.toString(); 2547 } 2548 2549 /** 2550 * Return the additional string to be logged by LogRec, default 2551 * 2552 * @param msg that was processed 2553 * @return information to be logged as a String 2554 */ 2555 protected String getLogRecString(Message msg) { 2556 WifiConfiguration config; 2557 Long now; 2558 String report; 2559 String key; 2560 StringBuilder sb = new StringBuilder(); 2561 if (mScreenOn) { 2562 sb.append("!"); 2563 } 2564 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2565 sb.append("(").append(messageHandlingStatus).append(")"); 2566 } 2567 sb.append(smToString(msg)); 2568 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2569 sb.append(" uid=" + msg.sendingUid); 2570 } 2571 sb.append(" ").append(printTime()); 2572 switch (msg.what) { 2573 case CMD_STARTED_GSCAN_DBG: 2574 case CMD_STARTED_PNO_DBG: 2575 sb.append(" "); 2576 sb.append(Integer.toString(msg.arg1)); 2577 sb.append(" "); 2578 sb.append(Integer.toString(msg.arg2)); 2579 if (msg.obj != null) { 2580 sb.append(" " + (String)msg.obj); 2581 } 2582 break; 2583 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2584 sb.append(" "); 2585 sb.append(Integer.toString(msg.arg1)); 2586 sb.append(" "); 2587 sb.append(Integer.toString(msg.arg2)); 2588 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2589 if (msg.obj != null) { 2590 sb.append(" " + (String)msg.obj); 2591 } 2592 break; 2593 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2594 sb.append(" "); 2595 sb.append(Integer.toString(msg.arg1)); 2596 sb.append(" "); 2597 sb.append(Integer.toString(msg.arg2)); 2598 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2599 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2600 sb.append(" autojoinAllowed="); 2601 sb.append(mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()); 2602 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2603 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2604 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2605 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2606 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2607 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2608 break; 2609 case CMD_PNO_NETWORK_FOUND: 2610 sb.append(" "); 2611 sb.append(Integer.toString(msg.arg1)); 2612 sb.append(" "); 2613 sb.append(Integer.toString(msg.arg2)); 2614 if (msg.obj != null) { 2615 ScanResult[] results = (ScanResult[])msg.obj; 2616 for (int i = 0; i < results.length; i++) { 2617 sb.append(" ").append(results[i].SSID).append(" "); 2618 sb.append(results[i].frequency); 2619 sb.append(" ").append(results[i].level); 2620 } 2621 } 2622 break; 2623 case CMD_START_SCAN: 2624 now = System.currentTimeMillis(); 2625 sb.append(" "); 2626 sb.append(Integer.toString(msg.arg1)); 2627 sb.append(" "); 2628 sb.append(Integer.toString(msg.arg2)); 2629 sb.append(" ic="); 2630 sb.append(Integer.toString(sScanAlarmIntentCount)); 2631 if (msg.obj != null) { 2632 Bundle bundle = (Bundle) msg.obj; 2633 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2634 if (request != 0) { 2635 sb.append(" proc(ms):").append(now - request); 2636 } 2637 } 2638 if (mIsScanOngoing) sb.append(" onGoing"); 2639 if (mIsFullScanOngoing) sb.append(" full"); 2640 if (lastStartScanTimeStamp != 0) { 2641 sb.append(" started:").append(lastStartScanTimeStamp); 2642 sb.append(",").append(now - lastStartScanTimeStamp); 2643 } 2644 if (lastScanDuration != 0) { 2645 sb.append(" dur:").append(lastScanDuration); 2646 } 2647 sb.append(" cnt=").append(mDelayedScanCounter); 2648 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2649 sb.append(" f=").append(mWifiInfo.getFrequency()); 2650 sb.append(" sc=").append(mWifiInfo.score); 2651 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2652 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2653 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2654 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2655 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2656 if (lastScanFreqs != null) { 2657 sb.append(" list=").append(lastScanFreqs); 2658 } else { 2659 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2660 } 2661 report = reportOnTime(); 2662 if (report != null) { 2663 sb.append(" ").append(report); 2664 } 2665 break; 2666 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2667 sb.append(" "); 2668 sb.append(Integer.toString(msg.arg1)); 2669 sb.append(" "); 2670 sb.append(Integer.toString(msg.arg2)); 2671 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2672 if (stateChangeResult != null) { 2673 sb.append(stateChangeResult.toString()); 2674 } 2675 break; 2676 case WifiManager.SAVE_NETWORK: 2677 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2678 sb.append(" "); 2679 sb.append(Integer.toString(msg.arg1)); 2680 sb.append(" "); 2681 sb.append(Integer.toString(msg.arg2)); 2682 if (lastSavedConfigurationAttempt != null) { 2683 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2684 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2685 if (lastSavedConfigurationAttempt.hiddenSSID) { 2686 sb.append(" hidden"); 2687 } 2688 if (lastSavedConfigurationAttempt.preSharedKey != null 2689 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2690 sb.append(" hasPSK"); 2691 } 2692 if (lastSavedConfigurationAttempt.ephemeral) { 2693 sb.append(" ephemeral"); 2694 } 2695 if (lastSavedConfigurationAttempt.selfAdded) { 2696 sb.append(" selfAdded"); 2697 } 2698 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2699 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2700 } 2701 break; 2702 case WifiManager.FORGET_NETWORK: 2703 sb.append(" "); 2704 sb.append(Integer.toString(msg.arg1)); 2705 sb.append(" "); 2706 sb.append(Integer.toString(msg.arg2)); 2707 if (lastForgetConfigurationAttempt != null) { 2708 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2709 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2710 if (lastForgetConfigurationAttempt.hiddenSSID) { 2711 sb.append(" hidden"); 2712 } 2713 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2714 sb.append(" hasPSK"); 2715 } 2716 if (lastForgetConfigurationAttempt.ephemeral) { 2717 sb.append(" ephemeral"); 2718 } 2719 if (lastForgetConfigurationAttempt.selfAdded) { 2720 sb.append(" selfAdded"); 2721 } 2722 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2723 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2724 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2725 } 2726 break; 2727 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2728 sb.append(" "); 2729 sb.append(Integer.toString(msg.arg1)); 2730 sb.append(" "); 2731 sb.append(Integer.toString(msg.arg2)); 2732 String bssid = (String) msg.obj; 2733 if (bssid != null && bssid.length() > 0) { 2734 sb.append(" "); 2735 sb.append(bssid); 2736 } 2737 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2738 break; 2739 case WifiMonitor.SCAN_RESULTS_EVENT: 2740 sb.append(" "); 2741 sb.append(Integer.toString(msg.arg1)); 2742 sb.append(" "); 2743 sb.append(Integer.toString(msg.arg2)); 2744 if (mScanResults != null) { 2745 sb.append(" found="); 2746 sb.append(mScanResults.size()); 2747 } 2748 sb.append(" known=").append(mNumScanResultsKnown); 2749 sb.append(" got=").append(mNumScanResultsReturned); 2750 if (lastScanDuration != 0) { 2751 sb.append(" dur:").append(lastScanDuration); 2752 } 2753 if (mOnTime != 0) { 2754 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2755 sb.append(",").append(mOnTime); 2756 } 2757 if (mTxTime != 0) { 2758 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2759 sb.append(",").append(mTxTime); 2760 } 2761 if (mRxTime != 0) { 2762 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2763 sb.append(",").append(mRxTime); 2764 } 2765 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2766 sb.append(String.format(" con=%d", mConnectionRequests)); 2767 key = mWifiConfigStore.getLastSelectedConfiguration(); 2768 if (key != null) { 2769 sb.append(" last=").append(key); 2770 } 2771 break; 2772 case WifiMonitor.SCAN_FAILED_EVENT: 2773 break; 2774 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2775 sb.append(" "); 2776 sb.append(Integer.toString(msg.arg1)); 2777 sb.append(" "); 2778 sb.append(Integer.toString(msg.arg2)); 2779 sb.append(" ").append(mLastBssid); 2780 sb.append(" nid=").append(mLastNetworkId); 2781 config = getCurrentWifiConfiguration(); 2782 if (config != null) { 2783 sb.append(" ").append(config.configKey()); 2784 } 2785 key = mWifiConfigStore.getLastSelectedConfiguration(); 2786 if (key != null) { 2787 sb.append(" last=").append(key); 2788 } 2789 break; 2790 case CMD_TARGET_BSSID: 2791 case CMD_ASSOCIATED_BSSID: 2792 sb.append(" "); 2793 sb.append(Integer.toString(msg.arg1)); 2794 sb.append(" "); 2795 sb.append(Integer.toString(msg.arg2)); 2796 if (msg.obj != null) { 2797 sb.append(" BSSID=").append((String) msg.obj); 2798 } 2799 if (mTargetRoamBSSID != null) { 2800 sb.append(" Target=").append(mTargetRoamBSSID); 2801 } 2802 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2803 break; 2804 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2805 if (msg.obj != null) { 2806 sb.append(" ").append((String) msg.obj); 2807 } 2808 sb.append(" nid=").append(msg.arg1); 2809 sb.append(" reason=").append(msg.arg2); 2810 if (mLastBssid != null) { 2811 sb.append(" lastbssid=").append(mLastBssid); 2812 } 2813 if (mWifiInfo.getFrequency() != -1) { 2814 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2815 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2816 } 2817 if (linkDebouncing) { 2818 sb.append(" debounce"); 2819 } 2820 break; 2821 case WifiMonitor.SSID_TEMP_DISABLED: 2822 case WifiMonitor.SSID_REENABLED: 2823 sb.append(" nid=").append(msg.arg1); 2824 if (msg.obj != null) { 2825 sb.append(" ").append((String) msg.obj); 2826 } 2827 config = getCurrentWifiConfiguration(); 2828 if (config != null) { 2829 sb.append(" cur=").append(config.configKey()); 2830 sb.append(" ajst=").append(config.autoJoinStatus); 2831 if (config.selfAdded) { 2832 sb.append(" selfAdded"); 2833 } 2834 if (config.status != 0) { 2835 sb.append(" st=").append(config.status); 2836 sb.append(" rs=").append(config.disableReason); 2837 } 2838 if (config.lastConnected != 0) { 2839 now = System.currentTimeMillis(); 2840 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2841 } 2842 if (mLastBssid != null) { 2843 sb.append(" lastbssid=").append(mLastBssid); 2844 } 2845 if (mWifiInfo.getFrequency() != -1) { 2846 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2847 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2848 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2849 } 2850 } 2851 break; 2852 case CMD_RSSI_POLL: 2853 case CMD_UNWANTED_NETWORK: 2854 case WifiManager.RSSI_PKTCNT_FETCH: 2855 sb.append(" "); 2856 sb.append(Integer.toString(msg.arg1)); 2857 sb.append(" "); 2858 sb.append(Integer.toString(msg.arg2)); 2859 if (mWifiInfo.getSSID() != null) 2860 if (mWifiInfo.getSSID() != null) 2861 sb.append(" ").append(mWifiInfo.getSSID()); 2862 if (mWifiInfo.getBSSID() != null) 2863 sb.append(" ").append(mWifiInfo.getBSSID()); 2864 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2865 sb.append(" f=").append(mWifiInfo.getFrequency()); 2866 sb.append(" sc=").append(mWifiInfo.score); 2867 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2868 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2869 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2870 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2871 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2872 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2873 report = reportOnTime(); 2874 if (report != null) { 2875 sb.append(" ").append(report); 2876 } 2877 if (wifiScoringReport != null) { 2878 sb.append(wifiScoringReport); 2879 } 2880 if (mConnectedModeGScanOffloadStarted) { 2881 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2882 } else { 2883 sb.append(" offload-stopped"); 2884 } 2885 break; 2886 case CMD_AUTO_CONNECT: 2887 case WifiManager.CONNECT_NETWORK: 2888 sb.append(" "); 2889 sb.append(Integer.toString(msg.arg1)); 2890 sb.append(" "); 2891 sb.append(Integer.toString(msg.arg2)); 2892 config = (WifiConfiguration) msg.obj; 2893 if (config != null) { 2894 sb.append(" ").append(config.configKey()); 2895 if (config.visibility != null) { 2896 sb.append(" ").append(config.visibility.toString()); 2897 } 2898 } 2899 if (mTargetRoamBSSID != null) { 2900 sb.append(" ").append(mTargetRoamBSSID); 2901 } 2902 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2903 config = getCurrentWifiConfiguration(); 2904 if (config != null) { 2905 sb.append(config.configKey()); 2906 if (config.visibility != null) { 2907 sb.append(" ").append(config.visibility.toString()); 2908 } 2909 } 2910 break; 2911 case CMD_AUTO_ROAM: 2912 sb.append(" "); 2913 sb.append(Integer.toString(msg.arg1)); 2914 sb.append(" "); 2915 sb.append(Integer.toString(msg.arg2)); 2916 ScanResult result = (ScanResult) msg.obj; 2917 if (result != null) { 2918 now = System.currentTimeMillis(); 2919 sb.append(" bssid=").append(result.BSSID); 2920 sb.append(" rssi=").append(result.level); 2921 sb.append(" freq=").append(result.frequency); 2922 if (result.seen > 0 && result.seen < now) { 2923 sb.append(" seen=").append(now - result.seen); 2924 } else { 2925 // Somehow the timestamp for this scan result is inconsistent 2926 sb.append(" !seen=").append(result.seen); 2927 } 2928 } 2929 if (mTargetRoamBSSID != null) { 2930 sb.append(" ").append(mTargetRoamBSSID); 2931 } 2932 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2933 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2934 break; 2935 case CMD_ADD_OR_UPDATE_NETWORK: 2936 sb.append(" "); 2937 sb.append(Integer.toString(msg.arg1)); 2938 sb.append(" "); 2939 sb.append(Integer.toString(msg.arg2)); 2940 if (msg.obj != null) { 2941 config = (WifiConfiguration) msg.obj; 2942 sb.append(" ").append(config.configKey()); 2943 sb.append(" prio=").append(config.priority); 2944 sb.append(" status=").append(config.status); 2945 if (config.BSSID != null) { 2946 sb.append(" ").append(config.BSSID); 2947 } 2948 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2949 if (curConfig != null) { 2950 if (curConfig.configKey().equals(config.configKey())) { 2951 sb.append(" is current"); 2952 } else { 2953 sb.append(" current=").append(curConfig.configKey()); 2954 sb.append(" prio=").append(curConfig.priority); 2955 sb.append(" status=").append(curConfig.status); 2956 } 2957 } 2958 } 2959 break; 2960 case WifiManager.DISABLE_NETWORK: 2961 case CMD_ENABLE_NETWORK: 2962 sb.append(" "); 2963 sb.append(Integer.toString(msg.arg1)); 2964 sb.append(" "); 2965 sb.append(Integer.toString(msg.arg2)); 2966 key = mWifiConfigStore.getLastSelectedConfiguration(); 2967 if (key != null) { 2968 sb.append(" last=").append(key); 2969 } 2970 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2971 if (config != null && (key == null || !config.configKey().equals(key))) { 2972 sb.append(" target=").append(key); 2973 } 2974 break; 2975 case CMD_GET_CONFIGURED_NETWORKS: 2976 sb.append(" "); 2977 sb.append(Integer.toString(msg.arg1)); 2978 sb.append(" "); 2979 sb.append(Integer.toString(msg.arg2)); 2980 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2981 break; 2982 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg1)); 2985 sb.append(" "); 2986 sb.append(Integer.toString(msg.arg2)); 2987 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2988 sb.append(",").append(mWifiInfo.txBad); 2989 sb.append(",").append(mWifiInfo.txRetries); 2990 break; 2991 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2992 sb.append(" "); 2993 sb.append(Integer.toString(msg.arg1)); 2994 sb.append(" "); 2995 sb.append(Integer.toString(msg.arg2)); 2996 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2997 sb.append(" OK "); 2998 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2999 sb.append(" FAIL "); 3000 } 3001 if (mLinkProperties != null) { 3002 if (mLinkProperties.hasIPv4Address()) { 3003 sb.append(" v4"); 3004 } 3005 if (mLinkProperties.hasGlobalIPv6Address()) { 3006 sb.append(" v6"); 3007 } 3008 if (mLinkProperties.hasIPv4DefaultRoute()) { 3009 sb.append(" v4r"); 3010 } 3011 if (mLinkProperties.hasIPv6DefaultRoute()) { 3012 sb.append(" v6r"); 3013 } 3014 if (mLinkProperties.hasIPv4DnsServer()) { 3015 sb.append(" v4dns"); 3016 } 3017 if (mLinkProperties.hasIPv6DnsServer()) { 3018 sb.append(" v6dns"); 3019 } 3020 } 3021 break; 3022 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3023 sb.append(" "); 3024 sb.append(Integer.toString(msg.arg1)); 3025 sb.append(" "); 3026 sb.append(Integer.toString(msg.arg2)); 3027 if (msg.obj != null) { 3028 NetworkInfo info = (NetworkInfo) msg.obj; 3029 NetworkInfo.State state = info.getState(); 3030 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3031 if (state != null) { 3032 sb.append(" st=").append(state); 3033 } 3034 if (detailedState != null) { 3035 sb.append("/").append(detailedState); 3036 } 3037 } 3038 break; 3039 case CMD_IP_CONFIGURATION_LOST: 3040 int count = -1; 3041 WifiConfiguration c = getCurrentWifiConfiguration(); 3042 if (c != null) count = c.numIpConfigFailures; 3043 sb.append(" "); 3044 sb.append(Integer.toString(msg.arg1)); 3045 sb.append(" "); 3046 sb.append(Integer.toString(msg.arg2)); 3047 sb.append(" failures: "); 3048 sb.append(Integer.toString(count)); 3049 sb.append("/"); 3050 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3051 if (mWifiInfo.getBSSID() != null) { 3052 sb.append(" ").append(mWifiInfo.getBSSID()); 3053 } 3054 if (c != null) { 3055 ScanDetailCache scanDetailCache = 3056 mWifiConfigStore.getScanDetailCache(c); 3057 if (scanDetailCache != null) { 3058 for (ScanDetail sd : scanDetailCache.values()) { 3059 ScanResult r = sd.getScanResult(); 3060 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3061 sb.append(" ipfail=").append(r.numIpConfigFailures); 3062 sb.append(",st=").append(r.autoJoinStatus); 3063 } 3064 } 3065 } 3066 sb.append(" -> ajst=").append(c.autoJoinStatus); 3067 sb.append(" ").append(c.disableReason); 3068 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3069 sb.append(",").append(mWifiInfo.txBad); 3070 sb.append(",").append(mWifiInfo.txRetries); 3071 } 3072 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3073 break; 3074 case CMD_UPDATE_LINKPROPERTIES: 3075 sb.append(" "); 3076 sb.append(Integer.toString(msg.arg1)); 3077 sb.append(" "); 3078 sb.append(Integer.toString(msg.arg2)); 3079 if (mLinkProperties != null) { 3080 if (mLinkProperties.hasIPv4Address()) { 3081 sb.append(" v4"); 3082 } 3083 if (mLinkProperties.hasGlobalIPv6Address()) { 3084 sb.append(" v6"); 3085 } 3086 if (mLinkProperties.hasIPv4DefaultRoute()) { 3087 sb.append(" v4r"); 3088 } 3089 if (mLinkProperties.hasIPv6DefaultRoute()) { 3090 sb.append(" v6r"); 3091 } 3092 if (mLinkProperties.hasIPv4DnsServer()) { 3093 sb.append(" v4dns"); 3094 } 3095 if (mLinkProperties.hasIPv6DnsServer()) { 3096 sb.append(" v6dns"); 3097 } 3098 } 3099 break; 3100 case CMD_IP_REACHABILITY_LOST: 3101 if (msg.obj != null) { 3102 sb.append(" ").append((String) msg.obj); 3103 } 3104 break; 3105 case CMD_SET_COUNTRY_CODE: 3106 sb.append(" "); 3107 sb.append(Integer.toString(msg.arg1)); 3108 sb.append(" "); 3109 sb.append(Integer.toString(msg.arg2)); 3110 if (msg.obj != null) { 3111 sb.append(" ").append((String) msg.obj); 3112 } 3113 break; 3114 case CMD_ROAM_WATCHDOG_TIMER: 3115 sb.append(" "); 3116 sb.append(Integer.toString(msg.arg1)); 3117 sb.append(" "); 3118 sb.append(Integer.toString(msg.arg2)); 3119 sb.append(" cur=").append(roamWatchdogCount); 3120 break; 3121 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3122 sb.append(" "); 3123 sb.append(Integer.toString(msg.arg1)); 3124 sb.append(" "); 3125 sb.append(Integer.toString(msg.arg2)); 3126 sb.append(" cur=").append(disconnectingWatchdogCount); 3127 break; 3128 default: 3129 sb.append(" "); 3130 sb.append(Integer.toString(msg.arg1)); 3131 sb.append(" "); 3132 sb.append(Integer.toString(msg.arg2)); 3133 break; 3134 } 3135 3136 return sb.toString(); 3137 } 3138 3139 private void stopPnoOffload() { 3140 3141 // clear the PNO list 3142 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3143 Log.e(TAG, "Failed to stop pno"); 3144 } 3145 3146 } 3147 3148 3149 private boolean configureSsidWhiteList() { 3150 3151 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3152 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3153 return true; 3154 } 3155 3156 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3157 loge("configureSsidWhiteList couldnt program SSID list, size " 3158 + mWhiteListedSsids.length); 3159 return false; 3160 } 3161 3162 loge("configureSsidWhiteList success"); 3163 return true; 3164 } 3165 3166 // In associated more, lazy roam will be looking for 5GHz roam candidate 3167 private boolean configureLazyRoam() { 3168 boolean status; 3169 if (!useHalBasedAutoJoinOffload()) return false; 3170 3171 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3172 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3173 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3174 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3175 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3176 params.A_band_max_boost = 65; 3177 params.lazy_roam_hysteresis = 25; 3178 params.alert_roam_rssi_trigger = -75; 3179 3180 if (DBG) { 3181 Log.e(TAG, "configureLazyRoam " + params.toString()); 3182 } 3183 3184 if (!WifiNative.setLazyRoam(true, params)) { 3185 3186 Log.e(TAG, "configureLazyRoam couldnt program params"); 3187 3188 return false; 3189 } 3190 if (DBG) { 3191 Log.e(TAG, "configureLazyRoam success"); 3192 } 3193 return true; 3194 } 3195 3196 // In associated more, lazy roam will be looking for 5GHz roam candidate 3197 private boolean stopLazyRoam() { 3198 boolean status; 3199 if (!useHalBasedAutoJoinOffload()) return false; 3200 if (DBG) { 3201 Log.e(TAG, "stopLazyRoam"); 3202 } 3203 return WifiNative.setLazyRoam(false, null); 3204 } 3205 3206 private boolean startGScanConnectedModeOffload(String reason) { 3207 if (DBG) { 3208 if (reason == null) { 3209 reason = ""; 3210 } 3211 loge("startGScanConnectedModeOffload " + reason); 3212 } 3213 stopGScan("startGScanConnectedModeOffload " + reason); 3214 if (!mScreenOn) return false; 3215 3216 if (USE_PAUSE_SCANS) { 3217 mWifiNative.pauseScan(); 3218 } 3219 mPnoEnabled = configurePno(); 3220 if (mPnoEnabled == false) { 3221 if (USE_PAUSE_SCANS) { 3222 mWifiNative.restartScan(); 3223 } 3224 return false; 3225 } 3226 mLazyRoamEnabled = configureLazyRoam(); 3227 if (mLazyRoamEnabled == false) { 3228 if (USE_PAUSE_SCANS) { 3229 mWifiNative.restartScan(); 3230 } 3231 return false; 3232 } 3233 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3234 configureSsidWhiteList(); 3235 } 3236 if (!startConnectedGScan(reason)) { 3237 if (USE_PAUSE_SCANS) { 3238 mWifiNative.restartScan(); 3239 } 3240 return false; 3241 } 3242 if (USE_PAUSE_SCANS) { 3243 mWifiNative.restartScan(); 3244 } 3245 mConnectedModeGScanOffloadStarted = true; 3246 if (DBG) { 3247 loge("startGScanConnectedModeOffload success"); 3248 } 3249 return true; 3250 } 3251 3252 private boolean startGScanDisconnectedModeOffload(String reason) { 3253 if (DBG) { 3254 loge("startGScanDisconnectedModeOffload " + reason); 3255 } 3256 stopGScan("startGScanDisconnectedModeOffload " + reason); 3257 if (USE_PAUSE_SCANS) { 3258 mWifiNative.pauseScan(); 3259 } 3260 mPnoEnabled = configurePno(); 3261 if (mPnoEnabled == false) { 3262 if (USE_PAUSE_SCANS) { 3263 mWifiNative.restartScan(); 3264 } 3265 return false; 3266 } 3267 if (!startDisconnectedGScan(reason)) { 3268 if (USE_PAUSE_SCANS) { 3269 mWifiNative.restartScan(); 3270 } 3271 return false; 3272 } 3273 if (USE_PAUSE_SCANS) { 3274 mWifiNative.restartScan(); 3275 } 3276 return true; 3277 } 3278 3279 private boolean configurePno() { 3280 if (!useHalBasedAutoJoinOffload()) return false; 3281 3282 if (mWifiScanner == null) { 3283 log("configurePno: mWifiScanner is null "); 3284 return true; 3285 } 3286 3287 List<WifiNative.WifiPnoNetwork> llist 3288 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3289 if (llist == null || llist.size() == 0) { 3290 stopPnoOffload(); 3291 log("configurePno: empty PNO list "); 3292 return true; 3293 } 3294 if (DBG) { 3295 log("configurePno: got llist size " + llist.size()); 3296 } 3297 3298 // first program the network we want to look for thru the pno API 3299 WifiNative.WifiPnoNetwork list[] 3300 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3301 3302 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3303 Log.e(TAG, "Failed to set pno, length = " + list.length); 3304 return false; 3305 } 3306 3307 if (true) { 3308 StringBuilder sb = new StringBuilder(); 3309 for (WifiNative.WifiPnoNetwork network : list) { 3310 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3311 sb.append(" flags="); 3312 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3313 sb.append("] "); 3314 3315 } 3316 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3317 } 3318 return true; 3319 } 3320 3321 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3322 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3323 3324 private boolean startConnectedGScan(String reason) { 3325 // send a scan background request so as to kick firmware 3326 // 5GHz roaming and autojoin 3327 // We do this only if screen is on 3328 WifiScanner.ScanSettings settings; 3329 3330 if (mPnoEnabled || mLazyRoamEnabled) { 3331 settings = new WifiScanner.ScanSettings(); 3332 settings.band = WifiScanner.WIFI_BAND_BOTH; 3333 long now = System.currentTimeMillis(); 3334 3335 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3336 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3337 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3338 } else { 3339 mGScanStartTimeMilli = now; 3340 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3341 // if we start offload with short interval, then reconfigure it after a given 3342 // duration of time so as to reduce the scan frequency 3343 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3344 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3345 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3346 (long)delay); 3347 mRestartAutoJoinOffloadCounter++; 3348 } 3349 mGScanPeriodMilli = settings.periodInMs; 3350 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3351 if (DBG) { 3352 log("startConnectedScan: settings band="+ settings.band 3353 + " period=" + settings.periodInMs); 3354 } 3355 3356 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3357 if (true) { 3358 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3359 } 3360 } 3361 return true; 3362 } 3363 3364 private boolean startDisconnectedGScan(String reason) { 3365 // send a scan background request so as to kick firmware 3366 // PNO 3367 // This is done in both screen On and screen Off modes 3368 WifiScanner.ScanSettings settings; 3369 3370 if (mWifiScanner == null) { 3371 log("startDisconnectedGScan: no wifi scanner"); 3372 return false; 3373 } 3374 3375 if (mPnoEnabled || mLazyRoamEnabled) { 3376 settings = new WifiScanner.ScanSettings(); 3377 settings.band = WifiScanner.WIFI_BAND_BOTH; 3378 long now = System.currentTimeMillis(); 3379 3380 3381 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3382 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3383 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3384 } else { 3385 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3386 mGScanStartTimeMilli = now; 3387 // if we start offload with short interval, then reconfigure it after a given 3388 // duration of time so as to reduce the scan frequency 3389 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3390 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3391 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3392 (long)delay); 3393 mRestartAutoJoinOffloadCounter++; 3394 } 3395 mGScanPeriodMilli = settings.periodInMs; 3396 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3397 if (DBG) { 3398 log("startDisconnectedScan: settings band="+ settings.band 3399 + " period=" + settings.periodInMs); 3400 } 3401 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3402 if (true) { 3403 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3404 } 3405 } 3406 return true; 3407 } 3408 3409 private boolean stopGScan(String reason) { 3410 mGScanStartTimeMilli = 0; 3411 mGScanPeriodMilli = 0; 3412 if (mWifiScanner != null) { 3413 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3414 } 3415 mConnectedModeGScanOffloadStarted = false; 3416 if (true) { 3417 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3418 } 3419 return true; 3420 } 3421 3422 private void handleScreenStateChanged(boolean screenOn) { 3423 mScreenOn = screenOn; 3424 if (PDBG) { 3425 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3426 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3427 + " state " + getCurrentState().getName() 3428 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3429 } 3430 enableRssiPolling(screenOn); 3431 if (screenOn) enableAllNetworks(); 3432 if (mUserWantsSuspendOpt.get()) { 3433 if (screenOn) { 3434 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3435 } else { 3436 // Allow 2s for suspend optimizations to be set 3437 mSuspendWakeLock.acquire(2000); 3438 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3439 } 3440 } 3441 mScreenBroadcastReceived.set(true); 3442 3443 getWifiLinkLayerStats(false); 3444 mOnTimeScreenStateChange = mOnTime; 3445 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3446 3447 cancelDelayedScan(); 3448 3449 if (screenOn) { 3450 enableBackgroundScan(false); 3451 setScanAlarm(false); 3452 clearBlacklist(); 3453 3454 fullBandConnectedTimeIntervalMilli 3455 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3456 // In either Disconnectedstate or ConnectedState, 3457 // start the scan alarm so as to enable autojoin 3458 if (getCurrentState() == mConnectedState 3459 && allowFullBandScanAndAssociated()) { 3460 if (useHalBasedAutoJoinOffload()) { 3461 startGScanConnectedModeOffload("screenOnConnected"); 3462 } else { 3463 // Scan after 500ms 3464 startDelayedScan(500, null, null); 3465 } 3466 } else if (getCurrentState() == mDisconnectedState) { 3467 if (useHalBasedAutoJoinOffload()) { 3468 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3469 } else { 3470 // Scan after 500ms 3471 startDelayedScan(500, null, null); 3472 } 3473 } 3474 } else { 3475 if (getCurrentState() == mDisconnectedState) { 3476 // Screen Off and Disconnected and chipset doesn't support scan offload 3477 // => start scan alarm 3478 // Screen Off and Disconnected and chipset does support scan offload 3479 // => will use scan offload (i.e. background scan) 3480 if (useHalBasedAutoJoinOffload()) { 3481 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3482 } else { 3483 if (!mBackgroundScanSupported) { 3484 setScanAlarm(true); 3485 } else { 3486 if (!mIsScanOngoing) { 3487 enableBackgroundScan(true); 3488 } 3489 } 3490 } 3491 } else { 3492 enableBackgroundScan(false); 3493 if (useHalBasedAutoJoinOffload()) { 3494 // don't try stop Gscan if it is not enabled 3495 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3496 } 3497 } 3498 } 3499 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3500 3501 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3502 } 3503 3504 private void checkAndSetConnectivityInstance() { 3505 if (mCm == null) { 3506 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3507 } 3508 } 3509 3510 private boolean startTethering(ArrayList<String> available) { 3511 3512 boolean wifiAvailable = false; 3513 3514 checkAndSetConnectivityInstance(); 3515 3516 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3517 3518 for (String intf : available) { 3519 for (String regex : wifiRegexs) { 3520 if (intf.matches(regex)) { 3521 3522 InterfaceConfiguration ifcg = null; 3523 try { 3524 ifcg = mNwService.getInterfaceConfig(intf); 3525 if (ifcg != null) { 3526 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3527 ifcg.setLinkAddress(new LinkAddress( 3528 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3529 ifcg.setInterfaceUp(); 3530 3531 mNwService.setInterfaceConfig(intf, ifcg); 3532 } 3533 } catch (Exception e) { 3534 loge("Error configuring interface " + intf + ", :" + e); 3535 return false; 3536 } 3537 3538 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3539 loge("Error tethering on " + intf); 3540 return false; 3541 } 3542 mTetherInterfaceName = intf; 3543 return true; 3544 } 3545 } 3546 } 3547 // We found no interfaces to tether 3548 return false; 3549 } 3550 3551 private void stopTethering() { 3552 3553 checkAndSetConnectivityInstance(); 3554 3555 /* Clear the interface config to allow dhcp correctly configure new 3556 ip settings */ 3557 InterfaceConfiguration ifcg = null; 3558 try { 3559 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3560 if (ifcg != null) { 3561 ifcg.setLinkAddress( 3562 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3563 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3564 } 3565 } catch (Exception e) { 3566 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3567 } 3568 3569 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3570 loge("Untether initiate failed!"); 3571 } 3572 } 3573 3574 private boolean isWifiTethered(ArrayList<String> active) { 3575 3576 checkAndSetConnectivityInstance(); 3577 3578 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3579 for (String intf : active) { 3580 for (String regex : wifiRegexs) { 3581 if (intf.matches(regex)) { 3582 return true; 3583 } 3584 } 3585 } 3586 // We found no interfaces that are tethered 3587 return false; 3588 } 3589 3590 /** 3591 * Set the country code from the system setting value, if any. 3592 */ 3593 private void setCountryCode() { 3594 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3595 Settings.Global.WIFI_COUNTRY_CODE); 3596 if (countryCode != null && !countryCode.isEmpty()) { 3597 setCountryCode(countryCode, false); 3598 } else { 3599 //use driver default 3600 } 3601 } 3602 3603 /** 3604 * Set the frequency band from the system setting value, if any. 3605 */ 3606 private void setFrequencyBand() { 3607 int band = Settings.Global.getInt(mContext.getContentResolver(), 3608 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3609 setFrequencyBand(band, false); 3610 } 3611 3612 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3613 if (DBG) { 3614 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3615 + " -want " + mUserWantsSuspendOpt.get() 3616 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3617 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3618 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3619 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3620 } 3621 //mWifiNative.setSuspendOptimizations(enabled); 3622 3623 if (enabled) { 3624 mSuspendOptNeedsDisabled &= ~reason; 3625 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3626 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3627 if (DBG) { 3628 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3629 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3630 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3631 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3632 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3633 } 3634 mWifiNative.setSuspendOptimizations(true); 3635 } 3636 } else { 3637 mSuspendOptNeedsDisabled |= reason; 3638 mWifiNative.setSuspendOptimizations(false); 3639 } 3640 } 3641 3642 private void setSuspendOptimizations(int reason, boolean enabled) { 3643 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3644 if (enabled) { 3645 mSuspendOptNeedsDisabled &= ~reason; 3646 } else { 3647 mSuspendOptNeedsDisabled |= reason; 3648 } 3649 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3650 } 3651 3652 private void setWifiState(int wifiState) { 3653 final int previousWifiState = mWifiState.get(); 3654 3655 try { 3656 if (wifiState == WIFI_STATE_ENABLED) { 3657 mBatteryStats.noteWifiOn(); 3658 } else if (wifiState == WIFI_STATE_DISABLED) { 3659 mBatteryStats.noteWifiOff(); 3660 } 3661 } catch (RemoteException e) { 3662 loge("Failed to note battery stats in wifi"); 3663 } 3664 3665 mWifiState.set(wifiState); 3666 3667 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3668 3669 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3670 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3671 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3672 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3673 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3674 } 3675 3676 private void setWifiApState(int wifiApState, int reason) { 3677 final int previousWifiApState = mWifiApState.get(); 3678 3679 try { 3680 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3681 mBatteryStats.noteWifiOn(); 3682 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3683 mBatteryStats.noteWifiOff(); 3684 } 3685 } catch (RemoteException e) { 3686 loge("Failed to note battery stats in wifi"); 3687 } 3688 3689 // Update state 3690 mWifiApState.set(wifiApState); 3691 3692 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3693 3694 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3695 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3696 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3697 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3698 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3699 //only set reason number when softAP start failed 3700 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3701 } 3702 3703 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3704 } 3705 3706 /* 3707 void ageOutScanResults(int age) { 3708 synchronized(mScanResultCache) { 3709 // Trim mScanResults, which prevent WifiStateMachine to return 3710 // obsolete scan results to queriers 3711 long now = System.CurrentTimeMillis(); 3712 for (int i = 0; i < mScanResults.size(); i++) { 3713 ScanResult result = mScanResults.get(i); 3714 if ((result.seen > now || (now - result.seen) > age)) { 3715 mScanResults.remove(i); 3716 } 3717 } 3718 } 3719 }*/ 3720 3721 private static final String IE_STR = "ie="; 3722 private static final String ID_STR = "id="; 3723 private static final String BSSID_STR = "bssid="; 3724 private static final String FREQ_STR = "freq="; 3725 private static final String LEVEL_STR = "level="; 3726 private static final String TSF_STR = "tsf="; 3727 private static final String FLAGS_STR = "flags="; 3728 private static final String SSID_STR = "ssid="; 3729 private static final String DELIMITER_STR = "===="; 3730 private static final String END_STR = "####"; 3731 3732 int emptyScanResultCount = 0; 3733 3734 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3735 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3736 3737 /** 3738 * Format: 3739 * <p/> 3740 * id=1 3741 * bssid=68:7f:76:d7:1a:6e 3742 * freq=2412 3743 * level=-44 3744 * tsf=1344626243700342 3745 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3746 * ssid=zfdy 3747 * ==== 3748 * id=2 3749 * bssid=68:5f:74:d7:1a:6f 3750 * freq=5180 3751 * level=-73 3752 * tsf=1344626243700373 3753 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3754 * ssid=zuby 3755 * ==== 3756 */ 3757 private void setScanResults() { 3758 mNumScanResultsKnown = 0; 3759 mNumScanResultsReturned = 0; 3760 String bssid = ""; 3761 int level = 0; 3762 int freq = 0; 3763 long tsf = 0; 3764 String flags = ""; 3765 WifiSsid wifiSsid = null; 3766 String scanResults; 3767 String tmpResults; 3768 StringBuffer scanResultsBuf = new StringBuffer(); 3769 int sid = 0; 3770 3771 while (true) { 3772 tmpResults = mWifiNative.scanResults(sid); 3773 if (TextUtils.isEmpty(tmpResults)) break; 3774 scanResultsBuf.append(tmpResults); 3775 scanResultsBuf.append("\n"); 3776 String[] lines = tmpResults.split("\n"); 3777 sid = -1; 3778 for (int i = lines.length - 1; i >= 0; i--) { 3779 if (lines[i].startsWith(END_STR)) { 3780 break; 3781 } else if (lines[i].startsWith(ID_STR)) { 3782 try { 3783 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3784 } catch (NumberFormatException e) { 3785 // Nothing to do 3786 } 3787 break; 3788 } 3789 } 3790 if (sid == -1) break; 3791 } 3792 3793 // Age out scan results, we return all scan results found in the last 12 seconds, 3794 // and NOT all scan results since last scan. 3795 // ageOutScanResults(12000); 3796 3797 scanResults = scanResultsBuf.toString(); 3798 if (TextUtils.isEmpty(scanResults)) { 3799 emptyScanResultCount++; 3800 if (emptyScanResultCount > 10) { 3801 // If we got too many empty scan results, the current scan cache is stale, 3802 // hence clear it. 3803 mScanResults = new ArrayList<>(); 3804 } 3805 return; 3806 } 3807 3808 emptyScanResultCount = 0; 3809 3810 mWifiConfigStore.trimANQPCache(false); 3811 3812 // note that all these splits and substrings keep references to the original 3813 // huge string buffer while the amount we really want is generally pretty small 3814 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3815 synchronized (mScanResultCache) { 3816 mScanResults = new ArrayList<>(); 3817 String[] lines = scanResults.split("\n"); 3818 final int bssidStrLen = BSSID_STR.length(); 3819 final int flagLen = FLAGS_STR.length(); 3820 String infoElements = null; 3821 List<String> anqpLines = null; 3822 3823 for (String line : lines) { 3824 if (line.startsWith(BSSID_STR)) { 3825 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3826 } else if (line.startsWith(FREQ_STR)) { 3827 try { 3828 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3829 } catch (NumberFormatException e) { 3830 freq = 0; 3831 } 3832 } else if (line.startsWith(LEVEL_STR)) { 3833 try { 3834 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3835 /* some implementations avoid negative values by adding 256 3836 * so we need to adjust for that here. 3837 */ 3838 if (level > 0) level -= 256; 3839 } catch (NumberFormatException e) { 3840 level = 0; 3841 } 3842 } else if (line.startsWith(TSF_STR)) { 3843 try { 3844 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3845 } catch (NumberFormatException e) { 3846 tsf = 0; 3847 } 3848 } else if (line.startsWith(FLAGS_STR)) { 3849 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3850 } else if (line.startsWith(SSID_STR)) { 3851 wifiSsid = WifiSsid.createFromAsciiEncoded( 3852 line.substring(SSID_STR.length())); 3853 } else if (line.startsWith(IE_STR)) { 3854 infoElements = line; 3855 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3856 if (anqpLines == null) { 3857 anqpLines = new ArrayList<>(); 3858 } 3859 anqpLines.add(line); 3860 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3861 if (bssid != null) { 3862 try { 3863 NetworkDetail networkDetail = 3864 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3865 3866 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3867 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3868 Log.d(Utils.hs2LogTag(getClass()), 3869 String.format("Inconsistent SSID on BSSID '%s':" + 3870 " '%s' vs '%s': %s", 3871 bssid, xssid, networkDetail.getSSID(), infoElements)); 3872 } 3873 3874 if (networkDetail.hasInterworking()) { 3875 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3876 } 3877 3878 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3879 if (scanDetail != null) { 3880 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3881 flags, freq, tsf); 3882 } else { 3883 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3884 flags, level, freq, tsf); 3885 mScanResultCache.put(networkDetail, scanDetail); 3886 } 3887 3888 mNumScanResultsReturned++; // Keep track of how many scan results we got 3889 // as part of this scan's processing 3890 mScanResults.add(scanDetail); 3891 } catch (IllegalArgumentException iae) { 3892 Log.d(TAG, "Failed to parse information elements: " + iae); 3893 } 3894 } 3895 bssid = null; 3896 level = 0; 3897 freq = 0; 3898 tsf = 0; 3899 flags = ""; 3900 wifiSsid = null; 3901 infoElements = null; 3902 anqpLines = null; 3903 } 3904 } 3905 } 3906 3907 boolean attemptAutoJoin = true; 3908 SupplicantState state = mWifiInfo.getSupplicantState(); 3909 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3910 if (getCurrentState() == mRoamingState 3911 || getCurrentState() == mObtainingIpState 3912 || getCurrentState() == mScanModeState 3913 || getCurrentState() == mDisconnectingState 3914 || (getCurrentState() == mConnectedState 3915 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3916 || linkDebouncing 3917 || state == SupplicantState.ASSOCIATING 3918 || state == SupplicantState.AUTHENTICATING 3919 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3920 || state == SupplicantState.GROUP_HANDSHAKE 3921 || (/* keep autojoin enabled if user has manually selected a wifi network, 3922 so as to make sure we reliably remain connected to this network */ 3923 mConnectionRequests == 0 && selection == null)) { 3924 // Dont attempt auto-joining again while we are already attempting to join 3925 // and/or obtaining Ip address 3926 attemptAutoJoin = false; 3927 } 3928 if (DBG) { 3929 if (selection == null) { 3930 selection = "<none>"; 3931 } 3932 loge("wifi setScanResults state" + getCurrentState() 3933 + " sup_state=" + state 3934 + " debouncing=" + linkDebouncing 3935 + " mConnectionRequests=" + mConnectionRequests 3936 + " selection=" + selection 3937 + " mNumScanResultsReturned " + mNumScanResultsReturned 3938 + " mScanResults " + mScanResults.size()); 3939 } 3940 if (attemptAutoJoin) { 3941 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3942 } 3943 // Loose last selected configuration if we have been disconnected for 5 minutes 3944 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3945 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3946 } 3947 3948 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3949 synchronized (mScanResultCache) { 3950 // AutoJoincontroller will directly acces the scan result list and update it with 3951 // ScanResult status 3952 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3953 } 3954 } 3955 if (linkDebouncing) { 3956 // If debouncing, we dont re-select a SSID or BSSID hence 3957 // there is no need to call the network selection code 3958 // in WifiAutoJoinController, instead, 3959 // just try to reconnect to the same SSID by triggering a roam 3960 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3961 } 3962 } 3963 3964 /* 3965 * Fetch RSSI, linkspeed, and frequency on current connection 3966 */ 3967 private void fetchRssiLinkSpeedAndFrequencyNative() { 3968 int newRssi = -1; 3969 int newLinkSpeed = -1; 3970 int newFrequency = -1; 3971 3972 String signalPoll = mWifiNative.signalPoll(); 3973 3974 if (signalPoll != null) { 3975 String[] lines = signalPoll.split("\n"); 3976 for (String line : lines) { 3977 String[] prop = line.split("="); 3978 if (prop.length < 2) continue; 3979 try { 3980 if (prop[0].equals("RSSI")) { 3981 newRssi = Integer.parseInt(prop[1]); 3982 } else if (prop[0].equals("LINKSPEED")) { 3983 newLinkSpeed = Integer.parseInt(prop[1]); 3984 } else if (prop[0].equals("FREQUENCY")) { 3985 newFrequency = Integer.parseInt(prop[1]); 3986 } 3987 } catch (NumberFormatException e) { 3988 //Ignore, defaults on rssi and linkspeed are assigned 3989 } 3990 } 3991 } 3992 3993 if (PDBG) { 3994 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3995 + Integer.toString(newRssi) + " linkspeed=" 3996 + Integer.toString(newLinkSpeed)); 3997 } 3998 3999 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4000 // screen out invalid values 4001 /* some implementations avoid negative values by adding 256 4002 * so we need to adjust for that here. 4003 */ 4004 if (newRssi > 0) newRssi -= 256; 4005 mWifiInfo.setRssi(newRssi); 4006 /* 4007 * Rather then sending the raw RSSI out every time it 4008 * changes, we precalculate the signal level that would 4009 * be displayed in the status bar, and only send the 4010 * broadcast if that much more coarse-grained number 4011 * changes. This cuts down greatly on the number of 4012 * broadcasts, at the cost of not informing others 4013 * interested in RSSI of all the changes in signal 4014 * level. 4015 */ 4016 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4017 if (newSignalLevel != mLastSignalLevel) { 4018 updateCapabilities(getCurrentWifiConfiguration()); 4019 sendRssiChangeBroadcast(newRssi); 4020 } 4021 mLastSignalLevel = newSignalLevel; 4022 } else { 4023 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4024 updateCapabilities(getCurrentWifiConfiguration()); 4025 } 4026 4027 if (newLinkSpeed != -1) { 4028 mWifiInfo.setLinkSpeed(newLinkSpeed); 4029 } 4030 if (newFrequency > 0) { 4031 if (ScanResult.is5GHz(newFrequency)) { 4032 mWifiConnectionStatistics.num5GhzConnected++; 4033 } 4034 if (ScanResult.is24GHz(newFrequency)) { 4035 mWifiConnectionStatistics.num24GhzConnected++; 4036 } 4037 mWifiInfo.setFrequency(newFrequency); 4038 } 4039 mWifiConfigStore.updateConfiguration(mWifiInfo); 4040 } 4041 4042 /** 4043 * Determine if we need to switch network: 4044 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4045 * - match the uregncy of the switch versus the packet usage at the interface 4046 */ 4047 boolean shouldSwitchNetwork(int networkDelta) { 4048 int delta; 4049 if (networkDelta <= 0) { 4050 return false; 4051 } 4052 delta = networkDelta; 4053 if (mWifiInfo != null) { 4054 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 4055 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4056 // If AutoJoin while associated is not enabled, 4057 // we should never switch network when already associated 4058 delta = -1000; 4059 } else { 4060 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4061 // TODO: at the interface. We should also discriminate between ucast and mcast, 4062 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4063 // TODO: broadcasts 4064 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4065 delta -= 999; 4066 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4067 delta -= 6; 4068 } 4069 loge("WifiStateMachine shouldSwitchNetwork " 4070 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4071 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4072 + " delta " + networkDelta + " -> " + delta); 4073 } 4074 } else { 4075 loge("WifiStateMachine shouldSwitchNetwork " 4076 + " delta " + networkDelta + " -> " + delta); 4077 } 4078 if (delta > 0) { 4079 return true; 4080 } 4081 return false; 4082 } 4083 4084 // Polling has completed, hence we wont have a score anymore 4085 private void cleanWifiScore() { 4086 mWifiInfo.txBadRate = 0; 4087 mWifiInfo.txSuccessRate = 0; 4088 mWifiInfo.txRetriesRate = 0; 4089 mWifiInfo.rxSuccessRate = 0; 4090 } 4091 4092 int mBadLinkspeedcount = 0; 4093 4094 // For debug, provide information about the last scoring operation 4095 String wifiScoringReport = null; 4096 4097 private void calculateWifiScore(WifiLinkLayerStats stats) { 4098 StringBuilder sb = new StringBuilder(); 4099 4100 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4101 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4102 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4103 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4104 < mWifiConfigStore.badLinkSpeed5); 4105 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4106 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4107 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4108 >= mWifiConfigStore.goodLinkSpeed5); 4109 4110 if (isBadLinkspeed) { 4111 if (mBadLinkspeedcount < 6) 4112 mBadLinkspeedcount++; 4113 } else { 4114 if (mBadLinkspeedcount > 0) 4115 mBadLinkspeedcount--; 4116 } 4117 4118 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4119 if (isGoodLinkspeed) sb.append(" gl"); 4120 4121 /** 4122 * We want to make sure that we use the 24GHz RSSI thresholds if 4123 * there are 2.4GHz scan results 4124 * otherwise we end up lowering the score based on 5GHz values 4125 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4126 * We also might unblacklist the configuation based on 2.4GHz 4127 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4128 */ 4129 boolean use24Thresholds = false; 4130 boolean homeNetworkBoost = false; 4131 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4132 ScanDetailCache scanDetailCache = 4133 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4134 if (currentConfiguration != null && scanDetailCache != null) { 4135 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4136 if (currentConfiguration.visibility != null) { 4137 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4138 && currentConfiguration.visibility.rssi24 4139 >= (currentConfiguration.visibility.rssi5 - 2)) { 4140 use24Thresholds = true; 4141 } 4142 } 4143 if (scanDetailCache.size() <= 6 4144 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4145 && currentConfiguration.allowedKeyManagement. 4146 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4147 // A PSK network with less than 6 known BSSIDs 4148 // This is most likely a home network and thus we want to stick to wifi more 4149 homeNetworkBoost = true; 4150 } 4151 } 4152 if (homeNetworkBoost) sb.append(" hn"); 4153 if (use24Thresholds) sb.append(" u24"); 4154 4155 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4156 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4157 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4158 4159 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4160 4161 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4162 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4163 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4164 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4165 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4166 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4167 4168 if (isBadRSSI) sb.append(" br"); 4169 if (isLowRSSI) sb.append(" lr"); 4170 if (isHighRSSI) sb.append(" hr"); 4171 4172 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4173 if (currentConfiguration != null && 4174 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4175 if (isBadRSSI) { 4176 currentConfiguration.numTicksAtBadRSSI++; 4177 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4178 // We remained associated for a compound amount of time while passing 4179 // traffic, hence loose the corresponding user triggered disabled stats 4180 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4181 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4182 } 4183 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4184 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4185 } 4186 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4187 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4188 } 4189 currentConfiguration.numTicksAtBadRSSI = 0; 4190 } 4191 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4192 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4193 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4194 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4195 score = score - 5; 4196 penalizedDueToUserTriggeredDisconnect = 1; 4197 sb.append(" p1"); 4198 } 4199 } else if (isLowRSSI) { 4200 currentConfiguration.numTicksAtLowRSSI++; 4201 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4202 // We remained associated for a compound amount of time while passing 4203 // traffic, hence loose the corresponding user triggered disabled stats 4204 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4205 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4206 } 4207 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4208 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4209 } 4210 currentConfiguration.numTicksAtLowRSSI = 0; 4211 } 4212 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4213 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4214 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4215 score = score - 5; 4216 penalizedDueToUserTriggeredDisconnect = 2; 4217 sb.append(" p2"); 4218 } 4219 } else if (!isHighRSSI) { 4220 currentConfiguration.numTicksAtNotHighRSSI++; 4221 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4222 // We remained associated for a compound amount of time while passing 4223 // traffic, hence loose the corresponding user triggered disabled stats 4224 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4225 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4226 } 4227 currentConfiguration.numTicksAtNotHighRSSI = 0; 4228 } 4229 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4230 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4231 score = score - 5; 4232 penalizedDueToUserTriggeredDisconnect = 3; 4233 sb.append(" p3"); 4234 } 4235 } 4236 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4237 currentConfiguration.numTicksAtLowRSSI, 4238 currentConfiguration.numTicksAtNotHighRSSI)); 4239 } 4240 4241 if (PDBG) { 4242 String rssiStatus = ""; 4243 if (isBadRSSI) rssiStatus += " badRSSI "; 4244 else if (isHighRSSI) rssiStatus += " highRSSI "; 4245 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4246 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4247 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4248 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4249 + " score=" + Integer.toString(mWifiInfo.score) 4250 + rssiStatus 4251 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4252 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4253 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4254 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4255 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4256 } 4257 4258 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4259 && (isBadRSSI || isLowRSSI)) { 4260 // Link is stuck 4261 if (mWifiInfo.linkStuckCount < 5) 4262 mWifiInfo.linkStuckCount += 1; 4263 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4264 if (PDBG) loge(" bad link -> stuck count =" 4265 + Integer.toString(mWifiInfo.linkStuckCount)); 4266 } else if (mWifiInfo.txBadRate < 0.3) { 4267 if (mWifiInfo.linkStuckCount > 0) 4268 mWifiInfo.linkStuckCount -= 1; 4269 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4270 if (PDBG) loge(" good link -> stuck count =" 4271 + Integer.toString(mWifiInfo.linkStuckCount)); 4272 } 4273 4274 sb.append(String.format(" [%d", score)); 4275 4276 if (mWifiInfo.linkStuckCount > 1) { 4277 // Once link gets stuck for more than 3 seconds, start reducing the score 4278 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4279 } 4280 sb.append(String.format(",%d", score)); 4281 4282 if (isBadLinkspeed) { 4283 score -= 4; 4284 if (PDBG) { 4285 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4286 + " score=" + Integer.toString(score)); 4287 } 4288 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4289 score += 4; // So as bad rssi alone dont kill us 4290 } 4291 sb.append(String.format(",%d", score)); 4292 4293 if (isBadRSSI) { 4294 if (mWifiInfo.badRssiCount < 7) 4295 mWifiInfo.badRssiCount += 1; 4296 } else if (isLowRSSI) { 4297 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4298 if (mWifiInfo.badRssiCount > 0) { 4299 // Decrement bad Rssi count 4300 mWifiInfo.badRssiCount -= 1; 4301 } 4302 } else { 4303 mWifiInfo.badRssiCount = 0; 4304 mWifiInfo.lowRssiCount = 0; 4305 } 4306 4307 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4308 sb.append(String.format(",%d", score)); 4309 4310 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4311 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4312 + " --> score " + Integer.toString(score)); 4313 4314 4315 if (isHighRSSI) { 4316 score += 5; 4317 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 4318 } 4319 sb.append(String.format(",%d]", score)); 4320 4321 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4322 4323 //sanitize boundaries 4324 if (score > NetworkAgent.WIFI_BASE_SCORE) 4325 score = NetworkAgent.WIFI_BASE_SCORE; 4326 if (score < 0) 4327 score = 0; 4328 4329 //report score 4330 if (score != mWifiInfo.score) { 4331 if (DBG) { 4332 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4333 } 4334 mWifiInfo.score = score; 4335 if (mNetworkAgent != null) { 4336 mNetworkAgent.sendNetworkScore(score); 4337 } 4338 } 4339 wifiScoringReport = sb.toString(); 4340 } 4341 4342 public double getTxPacketRate() { 4343 if (mWifiInfo != null) { 4344 return mWifiInfo.txSuccessRate; 4345 } 4346 return -1; 4347 } 4348 4349 public double getRxPacketRate() { 4350 if (mWifiInfo != null) { 4351 return mWifiInfo.rxSuccessRate; 4352 } 4353 return -1; 4354 } 4355 4356 /** 4357 * Fetch TX packet counters on current connection 4358 */ 4359 private void fetchPktcntNative(RssiPacketCountInfo info) { 4360 String pktcntPoll = mWifiNative.pktcntPoll(); 4361 4362 if (pktcntPoll != null) { 4363 String[] lines = pktcntPoll.split("\n"); 4364 for (String line : lines) { 4365 String[] prop = line.split("="); 4366 if (prop.length < 2) continue; 4367 try { 4368 if (prop[0].equals("TXGOOD")) { 4369 info.txgood = Integer.parseInt(prop[1]); 4370 } else if (prop[0].equals("TXBAD")) { 4371 info.txbad = Integer.parseInt(prop[1]); 4372 } 4373 } catch (NumberFormatException e) { 4374 // Ignore 4375 } 4376 } 4377 } 4378 } 4379 4380 private boolean clearIPv4Address(String iface) { 4381 try { 4382 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4383 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4384 mNwService.setInterfaceConfig(iface, ifcg); 4385 return true; 4386 } catch (RemoteException e) { 4387 return false; 4388 } 4389 } 4390 4391 private boolean isProvisioned(LinkProperties lp) { 4392 return lp.isProvisioned() || 4393 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4394 } 4395 4396 /** 4397 * Creates a new LinkProperties object by merging information from various sources. 4398 * <p/> 4399 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4400 * netlink, static configuration, ...). When one of these sources of information has updated 4401 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4402 * information that came from other sources. Instead, when one of those sources has new 4403 * information, we update the object that tracks the information from that source and then 4404 * call this method to integrate the change into a new LinkProperties object for subsequent 4405 * comparison with mLinkProperties. 4406 * <p/> 4407 * The information used to build LinkProperties is currently obtained as follows: 4408 * - Interface name: set in the constructor. 4409 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4410 * - IPv4 routes, DNS servers, and domains: DHCP. 4411 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4412 * - HTTP proxy: the wifi config store. 4413 */ 4414 private LinkProperties makeLinkProperties() { 4415 LinkProperties newLp = new LinkProperties(); 4416 4417 // Interface name, proxy, and TCP buffer sizes are locally configured. 4418 newLp.setInterfaceName(mInterfaceName); 4419 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4420 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4421 newLp.setTcpBufferSizes(mTcpBufferSizes); 4422 } 4423 4424 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4425 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4426 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4427 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4428 newLp.addRoute(route); 4429 } 4430 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4431 // Only add likely reachable DNS servers. 4432 // TODO: investigate deleting this. 4433 if (newLp.isReachable(dns)) { 4434 newLp.addDnsServer(dns); 4435 } 4436 } 4437 4438 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4439 synchronized (mDhcpResultsLock) { 4440 // Even when we're using static configuration, we don't need to look at the config 4441 // store, because static IP configuration also populates mDhcpResults. 4442 if ((mDhcpResults != null)) { 4443 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4444 newLp.addRoute(route); 4445 } 4446 for (InetAddress dns : mDhcpResults.dnsServers) { 4447 // Only add likely reachable DNS servers. 4448 // TODO: investigate deleting this. 4449 if (newLp.isReachable(dns)) { 4450 newLp.addDnsServer(dns); 4451 } 4452 } 4453 newLp.setDomains(mDhcpResults.domains); 4454 } 4455 } 4456 4457 return newLp; 4458 } 4459 4460 private void updateLinkProperties(int reason) { 4461 LinkProperties newLp = makeLinkProperties(); 4462 4463 final boolean linkChanged = !newLp.equals(mLinkProperties); 4464 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4465 final boolean isProvisioned = isProvisioned(newLp); 4466 final boolean lostIPv4Provisioning = 4467 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4468 final DetailedState detailedState = getNetworkDetailedState(); 4469 4470 if (linkChanged) { 4471 if (DBG) { 4472 log("Link configuration changed for netId: " + mLastNetworkId 4473 + " old: " + mLinkProperties + " new: " + newLp); 4474 } 4475 mLinkProperties = newLp; 4476 if (mIpReachabilityMonitor != null) { 4477 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4478 } 4479 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4480 } 4481 4482 if (DBG) { 4483 StringBuilder sb = new StringBuilder(); 4484 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4485 sb.append(" state: " + detailedState); 4486 sb.append(" reason: " + smToString(reason)); 4487 4488 if (mLinkProperties != null) { 4489 if (mLinkProperties.hasIPv4Address()) { 4490 sb.append(" v4"); 4491 } 4492 if (mLinkProperties.hasGlobalIPv6Address()) { 4493 sb.append(" v6"); 4494 } 4495 if (mLinkProperties.hasIPv4DefaultRoute()) { 4496 sb.append(" v4r"); 4497 } 4498 if (mLinkProperties.hasIPv6DefaultRoute()) { 4499 sb.append(" v6r"); 4500 } 4501 if (mLinkProperties.hasIPv4DnsServer()) { 4502 sb.append(" v4dns"); 4503 } 4504 if (mLinkProperties.hasIPv6DnsServer()) { 4505 sb.append(" v6dns"); 4506 } 4507 if (isProvisioned) { 4508 sb.append(" isprov"); 4509 } 4510 } 4511 loge(sb.toString()); 4512 } 4513 4514 // If we just configured or lost IP configuration, do the needful. 4515 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4516 // here because those should only be called if we're attempting to connect or already 4517 // connected, whereas updateLinkProperties can be called at any time. 4518 switch (reason) { 4519 case DhcpStateMachine.DHCP_SUCCESS: 4520 case CMD_STATIC_IP_SUCCESS: 4521 // IPv4 provisioning succeded. Advance to connected state. 4522 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4523 if (!isProvisioned) { 4524 // Can never happen unless DHCP reports success but isProvisioned thinks the 4525 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4526 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4527 // TODO: disconnect here instead. If our configuration is not usable, there's no 4528 // point in staying connected, and if mLinkProperties is out of sync with 4529 // reality, that will cause problems in the future. 4530 loge("IPv4 config succeeded, but not provisioned"); 4531 } 4532 break; 4533 4534 case DhcpStateMachine.DHCP_FAILURE: 4535 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4536 // give up and disconnect. 4537 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4538 if (!isProvisioned || lostIPv4Provisioning) { 4539 sendMessage(CMD_IP_CONFIGURATION_LOST); 4540 } else { 4541 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4542 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4543 4544 // To be sure we don't get stuck with a non-working network if all we had is 4545 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4546 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4547 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4548 // necessary for provisioning, its deletion will cause us to disconnect. 4549 // 4550 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4551 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4552 // not return true if we're using DHCP and don't have an IPv4 default route. So 4553 // for now it's only here for extra redundancy. However, it will increase 4554 // robustness if we move to getting IPv4 routes from netlink as well. 4555 loge("DHCP failure: provisioned, clearing IPv4 address."); 4556 if (!clearIPv4Address(mInterfaceName)) { 4557 sendMessage(CMD_IP_CONFIGURATION_LOST); 4558 } 4559 } 4560 break; 4561 4562 case CMD_STATIC_IP_FAILURE: 4563 // Static configuration was invalid, or an error occurred in applying it. Give up. 4564 sendMessage(CMD_IP_CONFIGURATION_LOST); 4565 break; 4566 4567 case CMD_UPDATE_LINKPROPERTIES: 4568 // IP addresses, DNS servers, etc. changed. Act accordingly. 4569 if (wasProvisioned && !isProvisioned) { 4570 // We no longer have a usable network configuration. Disconnect. 4571 sendMessage(CMD_IP_CONFIGURATION_LOST); 4572 } else if (!wasProvisioned && isProvisioned) { 4573 // We have a usable IPv6-only config. Advance to connected state. 4574 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4575 } 4576 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4577 // If anything has changed and we're already connected, send out a notification. 4578 sendLinkConfigurationChangedBroadcast(); 4579 } 4580 break; 4581 } 4582 } 4583 4584 /** 4585 * Clears all our link properties. 4586 */ 4587 private void clearLinkProperties() { 4588 // Clear the link properties obtained from DHCP and netlink. 4589 synchronized (mDhcpResultsLock) { 4590 if (mDhcpResults != null) { 4591 mDhcpResults.clear(); 4592 } 4593 } 4594 mNetlinkTracker.clearLinkProperties(); 4595 if (mIpReachabilityMonitor != null) { 4596 mIpReachabilityMonitor.clearLinkProperties(); 4597 } 4598 4599 // Now clear the merged link properties. 4600 mLinkProperties.clear(); 4601 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4602 } 4603 4604 /** 4605 * try to update default route MAC address. 4606 */ 4607 private String updateDefaultRouteMacAddress(int timeout) { 4608 String address = null; 4609 for (RouteInfo route : mLinkProperties.getRoutes()) { 4610 if (route.isDefaultRoute() && route.hasGateway()) { 4611 InetAddress gateway = route.getGateway(); 4612 if (gateway instanceof Inet4Address) { 4613 if (PDBG) { 4614 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4615 + gateway.getHostAddress()); 4616 } 4617 address = macAddressFromRoute(gateway.getHostAddress()); 4618 /* The gateway's MAC address is known */ 4619 if ((address == null) && (timeout > 0)) { 4620 boolean reachable = false; 4621 try { 4622 reachable = gateway.isReachable(timeout); 4623 } catch (Exception e) { 4624 loge("updateDefaultRouteMacAddress exception reaching :" 4625 + gateway.getHostAddress()); 4626 4627 } finally { 4628 if (reachable == true) { 4629 4630 address = macAddressFromRoute(gateway.getHostAddress()); 4631 if (PDBG) { 4632 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4633 + gateway.getHostAddress() + " found " + address); 4634 } 4635 } 4636 } 4637 } 4638 if (address != null) { 4639 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4640 } 4641 } 4642 } 4643 } 4644 return address; 4645 } 4646 4647 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4648 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4649 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4650 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4651 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4652 } 4653 4654 private void sendRssiChangeBroadcast(final int newRssi) { 4655 try { 4656 mBatteryStats.noteWifiRssiChanged(newRssi); 4657 } catch (RemoteException e) { 4658 // Won't happen. 4659 } 4660 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4661 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4662 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4663 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4664 } 4665 4666 private void sendNetworkStateChangeBroadcast(String bssid) { 4667 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4668 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4669 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4670 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4671 if (bssid != null) 4672 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4673 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4674 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4675 // We no longer report MAC address to third-parties and our code does 4676 // not rely on this broadcast, so just send the default MAC address. 4677 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4678 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4679 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4680 } 4681 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4682 } 4683 4684 private WifiInfo getWiFiInfoForUid(int uid) { 4685 if (Binder.getCallingUid() == Process.myUid()) { 4686 return mWifiInfo; 4687 } 4688 4689 WifiInfo result = new WifiInfo(mWifiInfo); 4690 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4691 4692 IBinder binder = ServiceManager.getService("package"); 4693 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4694 4695 try { 4696 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4697 uid) == PackageManager.PERMISSION_GRANTED) { 4698 result.setMacAddress(mWifiInfo.getMacAddress()); 4699 } 4700 } catch (RemoteException e) { 4701 Log.e(TAG, "Error checking receiver permission", e); 4702 } 4703 4704 return result; 4705 } 4706 4707 private void sendLinkConfigurationChangedBroadcast() { 4708 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4709 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4710 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4711 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4712 } 4713 4714 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4715 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4716 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4717 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4718 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4719 } 4720 4721 /** 4722 * Record the detailed state of a network. 4723 * 4724 * @param state the new {@code DetailedState} 4725 */ 4726 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4727 boolean hidden = false; 4728 4729 if (linkDebouncing || isRoaming()) { 4730 // There is generally a confusion in the system about colluding 4731 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4732 // which leads to multiple confusion. 4733 // 4734 // If link is de-bouncing or roaming, we already have an IP address 4735 // as well we were connected and are doing L2 cycles of 4736 // reconnecting or renewing IP address to check that we still have it 4737 // This L2 link flapping should ne be reflected into the Network state 4738 // which is the state of the WiFi Network visible to Layer 3 and applications 4739 // Note that once debouncing and roaming are completed, we will 4740 // set the Network state to where it should be, or leave it as unchanged 4741 // 4742 hidden = true; 4743 } 4744 if (DBG) { 4745 log("setDetailed state, old =" 4746 + mNetworkInfo.getDetailedState() + " and new state=" + state 4747 + " hidden=" + hidden); 4748 } 4749 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4750 // Always indicate that SSID has changed 4751 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4752 if (DBG) { 4753 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4754 } 4755 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4756 sendNetworkStateChangeBroadcast(null); 4757 } 4758 } 4759 if (hidden == true) { 4760 return false; 4761 } 4762 4763 if (state != mNetworkInfo.getDetailedState()) { 4764 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4765 if (mNetworkAgent != null) { 4766 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4767 } 4768 sendNetworkStateChangeBroadcast(null); 4769 return true; 4770 } 4771 return false; 4772 } 4773 4774 private DetailedState getNetworkDetailedState() { 4775 return mNetworkInfo.getDetailedState(); 4776 } 4777 4778 private SupplicantState handleSupplicantStateChange(Message message) { 4779 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4780 SupplicantState state = stateChangeResult.state; 4781 // Supplicant state change 4782 // [31-13] Reserved for future use 4783 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4784 // 50023 supplicant_state_changed (custom|1|5) 4785 mWifiInfo.setSupplicantState(state); 4786 // Network id is only valid when we start connecting 4787 if (SupplicantState.isConnecting(state)) { 4788 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4789 } else { 4790 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4791 } 4792 4793 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4794 4795 if (mWhiteListedSsids != null 4796 && mWhiteListedSsids.length > 0 4797 && stateChangeResult.wifiSsid != null) { 4798 String SSID = stateChangeResult.wifiSsid.toString(); 4799 String currentSSID = mWifiInfo.getSSID(); 4800 if (SSID != null 4801 && currentSSID != null 4802 && !SSID.equals(WifiSsid.NONE)) { 4803 // Remove quote before comparing 4804 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4805 && SSID.charAt(SSID.length() - 1) == '"') 4806 { 4807 SSID = SSID.substring(1, SSID.length() - 1); 4808 } 4809 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4810 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4811 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4812 } 4813 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4814 lastConnectAttempt = System.currentTimeMillis(); 4815 targetWificonfiguration 4816 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4817 transitionTo(mRoamingState); 4818 } 4819 } 4820 } 4821 4822 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4823 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4824 4825 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4826 4827 return state; 4828 } 4829 4830 /** 4831 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4832 * using the interface, stopping DHCP & disabling interface 4833 */ 4834 private void handleNetworkDisconnect() { 4835 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4836 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4837 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4838 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4839 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4840 4841 4842 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4843 4844 stopDhcp(); 4845 4846 try { 4847 mNwService.clearInterfaceAddresses(mInterfaceName); 4848 mNwService.disableIpv6(mInterfaceName); 4849 } catch (Exception e) { 4850 loge("Failed to clear addresses or disable ipv6" + e); 4851 } 4852 4853 /* Reset data structures */ 4854 mBadLinkspeedcount = 0; 4855 mWifiInfo.reset(); 4856 linkDebouncing = false; 4857 /* Reset roaming parameters */ 4858 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4859 4860 /** 4861 * fullBandConnectedTimeIntervalMilli: 4862 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4863 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4864 * Initialize to sane value = 20 seconds 4865 */ 4866 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4867 4868 setNetworkDetailedState(DetailedState.DISCONNECTED); 4869 if (mNetworkAgent != null) { 4870 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4871 mNetworkAgent = null; 4872 } 4873 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4874 4875 /* Clear network properties */ 4876 clearLinkProperties(); 4877 4878 /* Cend event to CM & network change broadcast */ 4879 sendNetworkStateChangeBroadcast(mLastBssid); 4880 4881 /* Cancel auto roam requests */ 4882 autoRoamSetBSSID(mLastNetworkId, "any"); 4883 4884 mLastBssid = null; 4885 registerDisconnected(); 4886 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4887 } 4888 4889 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4890 /* Socket connection can be lost when we do a graceful shutdown 4891 * or when the driver is hung. Ensure supplicant is stopped here. 4892 */ 4893 if (killSupplicant) { 4894 mWifiMonitor.killSupplicant(mP2pSupported); 4895 } 4896 mWifiNative.closeSupplicantConnection(); 4897 sendSupplicantConnectionChangedBroadcast(false); 4898 setWifiState(WIFI_STATE_DISABLED); 4899 } 4900 4901 void handlePreDhcpSetup() { 4902 mDhcpActive = true; 4903 if (!mBluetoothConnectionActive) { 4904 /* 4905 * There are problems setting the Wi-Fi driver's power 4906 * mode to active when bluetooth coexistence mode is 4907 * enabled or sense. 4908 * <p> 4909 * We set Wi-Fi to active mode when 4910 * obtaining an IP address because we've found 4911 * compatibility issues with some routers with low power 4912 * mode. 4913 * <p> 4914 * In order for this active power mode to properly be set, 4915 * we disable coexistence mode until we're done with 4916 * obtaining an IP address. One exception is if we 4917 * are currently connected to a headset, since disabling 4918 * coexistence would interrupt that connection. 4919 */ 4920 // Disable the coexistence mode 4921 mWifiNative.setBluetoothCoexistenceMode( 4922 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4923 } 4924 4925 // Disable power save and suspend optimizations during DHCP 4926 // Note: The order here is important for now. Brcm driver changes 4927 // power settings when we control suspend mode optimizations. 4928 // TODO: Remove this comment when the driver is fixed. 4929 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4930 mWifiNative.setPowerSave(false); 4931 4932 // Update link layer stats 4933 getWifiLinkLayerStats(false); 4934 4935 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4936 Message msg = new Message(); 4937 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4938 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4939 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4940 msg.obj = mDhcpStateMachine; 4941 mWifiP2pChannel.sendMessage(msg); 4942 } 4943 4944 4945 private boolean useLegacyDhcpClient() { 4946 return Settings.Global.getInt( 4947 mContext.getContentResolver(), 4948 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4949 } 4950 4951 private void maybeInitDhcpStateMachine() { 4952 if (mDhcpStateMachine == null) { 4953 if (useLegacyDhcpClient()) { 4954 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4955 mContext, WifiStateMachine.this, mInterfaceName); 4956 } else { 4957 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4958 mContext, WifiStateMachine.this, mInterfaceName); 4959 } 4960 } 4961 } 4962 4963 void startDhcp() { 4964 maybeInitDhcpStateMachine(); 4965 mDhcpStateMachine.registerForPreDhcpNotification(); 4966 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4967 } 4968 4969 void renewDhcp() { 4970 maybeInitDhcpStateMachine(); 4971 mDhcpStateMachine.registerForPreDhcpNotification(); 4972 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4973 } 4974 4975 void stopDhcp() { 4976 if (mDhcpStateMachine != null) { 4977 /* In case we were in middle of DHCP operation restore back powermode */ 4978 handlePostDhcpSetup(); 4979 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4980 } 4981 } 4982 4983 void handlePostDhcpSetup() { 4984 /* Restore power save and suspend optimizations */ 4985 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4986 mWifiNative.setPowerSave(true); 4987 4988 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4989 4990 // Set the coexistence mode back to its default value 4991 mWifiNative.setBluetoothCoexistenceMode( 4992 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4993 4994 mDhcpActive = false; 4995 } 4996 4997 void connectScanningService() { 4998 4999 if (mWifiScanner == null) { 5000 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 5001 } 5002 } 5003 5004 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 5005 5006 if (PDBG) { 5007 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 5008 loge("link address " + dhcpResults.ipAddress); 5009 } 5010 5011 Inet4Address addr; 5012 synchronized (mDhcpResultsLock) { 5013 mDhcpResults = dhcpResults; 5014 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5015 } 5016 5017 if (isRoaming()) { 5018 int previousAddress = mWifiInfo.getIpAddress(); 5019 int newAddress = NetworkUtils.inetAddressToInt(addr); 5020 if (previousAddress != newAddress) { 5021 loge("handleIPv4Success, roaming and address changed" + 5022 mWifiInfo + " got: " + addr); 5023 } 5024 } 5025 mWifiInfo.setInetAddress(addr); 5026 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5027 updateLinkProperties(reason); 5028 } 5029 5030 private void handleSuccessfulIpConfiguration() { 5031 mLastSignalLevel = -1; // Force update of signal strength 5032 WifiConfiguration c = getCurrentWifiConfiguration(); 5033 if (c != null) { 5034 // Reset IP failure tracking 5035 c.numConnectionFailures = 0; 5036 5037 // Tell the framework whether the newly connected network is trusted or untrusted. 5038 updateCapabilities(c); 5039 } 5040 if (c != null) { 5041 ScanResult result = getCurrentScanResult(); 5042 if (result == null) { 5043 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5044 c.configKey()); 5045 } else { 5046 // Clear the per BSSID failure count 5047 result.numIpConfigFailures = 0; 5048 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5049 // any BSSID, even though it may already have a non zero ip failure count, 5050 // this will typically happen if the user walks away and come back to his arrea 5051 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5052 // in supplicant for a couple of hours or a day 5053 mWifiConfigStore.clearBssidBlacklist(); 5054 } 5055 } 5056 } 5057 5058 private void handleIPv4Failure(int reason) { 5059 synchronized(mDhcpResultsLock) { 5060 if (mDhcpResults != null) { 5061 mDhcpResults.clear(); 5062 } 5063 } 5064 if (PDBG) { 5065 loge("wifistatemachine handleIPv4Failure"); 5066 } 5067 updateLinkProperties(reason); 5068 } 5069 5070 private void handleIpConfigurationLost() { 5071 mWifiInfo.setInetAddress(null); 5072 mWifiInfo.setMeteredHint(false); 5073 5074 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5075 "DHCP FAILURE", mWifiInfo.getBSSID()); 5076 5077 /* DHCP times out after about 30 seconds, we do a 5078 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5079 */ 5080 mWifiNative.disconnect(); 5081 } 5082 5083 // TODO: De-duplicated this and handleIpConfigurationLost(). 5084 private void handleIpReachabilityLost() { 5085 // No need to be told about any additional neighbors that might also 5086 // become unreachable--quiet them now while we start disconnecting. 5087 if (mIpReachabilityMonitor != null) { 5088 mIpReachabilityMonitor.clearLinkProperties(); 5089 } 5090 5091 mWifiInfo.setInetAddress(null); 5092 mWifiInfo.setMeteredHint(false); 5093 5094 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5095 5096 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5097 mWifiNative.disconnect(); 5098 } 5099 5100 private int convertFrequencyToChannelNumber(int frequency) { 5101 if (frequency >= 2412 && frequency <= 2484) { 5102 return (frequency -2412) / 5 + 1; 5103 } else if (frequency >= 5170 && frequency <=5825) { 5104 //DFS is included 5105 return (frequency -5170) / 5 + 34; 5106 } else { 5107 return 0; 5108 } 5109 } 5110 5111 private int chooseApChannel(int apBand) { 5112 int apChannel; 5113 int[] channel; 5114 5115 if (apBand == 0) { 5116 //for 2.4GHz, we only set the AP at channel 1,6,11 5117 apChannel = 5 * mRandom.nextInt(3) + 1; 5118 } else { 5119 //5G without DFS 5120 channel = mWifiNative.getChannelsForBand(2); 5121 if (channel != null && channel.length > 0) { 5122 apChannel = channel[mRandom.nextInt(channel.length)]; 5123 apChannel = convertFrequencyToChannelNumber(apChannel); 5124 } else { 5125 Log.e(TAG, "SoftAp do not get available channel list"); 5126 apChannel = 0; 5127 } 5128 } 5129 5130 if(DBG) { 5131 Log.d(TAG, "SoftAp set on channel " + apChannel); 5132 } 5133 5134 return apChannel; 5135 } 5136 5137 /* SoftAP configuration */ 5138 private boolean enableSoftAp() { 5139 if (WifiNative.getInterfaces() != 0) { 5140 if (!mWifiNative.toggleInterface(0)) { 5141 if (DBG) Log.e(TAG, "toggleInterface failed"); 5142 return false; 5143 } 5144 } else { 5145 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5146 } 5147 5148 try { 5149 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5150 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5151 } catch (Exception e) { 5152 Log.e(TAG, "Failed to reload AP firmware " + e); 5153 } 5154 5155 if (WifiNative.startHal() == false) { 5156 /* starting HAL is optional */ 5157 Log.e(TAG, "Failed to start HAL"); 5158 } 5159 return true; 5160 } 5161 5162 /* Current design is to not set the config on a running hostapd but instead 5163 * stop and start tethering when user changes config on a running access point 5164 * 5165 * TODO: Add control channel setup through hostapd that allows changing config 5166 * on a running daemon 5167 */ 5168 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5169 // set channel 5170 final WifiConfiguration config = new WifiConfiguration(configuration); 5171 5172 if (DBG) { 5173 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5174 } 5175 5176 //We need HAL support to set country code and get available channel list, if HAL is 5177 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5178 if (mWifiNative.isHalStarted()) { 5179 //set country code through HAL Here 5180 if (mSetCountryCode != null) { 5181 if (!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 5182 if (config.apBand != 0) { 5183 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5184 //countrycode is mandatory for 5GHz 5185 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5186 return; 5187 } 5188 } 5189 } else { 5190 if (config.apBand != 0) { 5191 //countrycode is mandatory for 5GHz 5192 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5193 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5194 return; 5195 } 5196 } 5197 5198 if (config.apChannel == 0) { 5199 config.apChannel = chooseApChannel(config.apBand); 5200 if (config.apChannel == 0) { 5201 //fail to get available channel 5202 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5203 return; 5204 } 5205 } 5206 } else { 5207 //for some old device, wifiHal may not be supported 5208 config.apChannel = 0; 5209 config.apChannel = 6; 5210 } 5211 // Start hostapd on a separate thread 5212 new Thread(new Runnable() { 5213 public void run() { 5214 try { 5215 mNwService.startAccessPoint(config, mInterfaceName); 5216 } catch (Exception e) { 5217 loge("Exception in softap start " + e); 5218 try { 5219 mNwService.stopAccessPoint(mInterfaceName); 5220 mNwService.startAccessPoint(config, mInterfaceName); 5221 } catch (Exception e1) { 5222 loge("Exception in softap re-start " + e1); 5223 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5224 return; 5225 } 5226 } 5227 if (DBG) log("Soft AP start successful"); 5228 sendMessage(CMD_START_AP_SUCCESS); 5229 } 5230 }).start(); 5231 } 5232 5233 /* 5234 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5235 * so as to record MAC address of default gateway. 5236 **/ 5237 private String macAddressFromRoute(String ipAddress) { 5238 String macAddress = null; 5239 BufferedReader reader = null; 5240 try { 5241 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5242 5243 // Skip over the line bearing colum titles 5244 String line = reader.readLine(); 5245 5246 while ((line = reader.readLine()) != null) { 5247 String[] tokens = line.split("[ ]+"); 5248 if (tokens.length < 6) { 5249 continue; 5250 } 5251 5252 // ARP column format is 5253 // Address HWType HWAddress Flags Mask IFace 5254 String ip = tokens[0]; 5255 String mac = tokens[3]; 5256 5257 if (ipAddress.equals(ip)) { 5258 macAddress = mac; 5259 break; 5260 } 5261 } 5262 5263 if (macAddress == null) { 5264 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5265 "/proc/net/arp"); 5266 } 5267 5268 } catch (FileNotFoundException e) { 5269 loge("Could not open /proc/net/arp to lookup mac address"); 5270 } catch (IOException e) { 5271 loge("Could not read /proc/net/arp to lookup mac address"); 5272 } finally { 5273 try { 5274 if (reader != null) { 5275 reader.close(); 5276 } 5277 } catch (IOException e) { 5278 // Do nothing 5279 } 5280 } 5281 return macAddress; 5282 5283 } 5284 5285 private class WifiNetworkFactory extends NetworkFactory { 5286 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5287 super(l, c, TAG, f); 5288 } 5289 5290 @Override 5291 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5292 ++mConnectionRequests; 5293 } 5294 5295 @Override 5296 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5297 --mConnectionRequests; 5298 } 5299 5300 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5301 pw.println("mConnectionRequests " + mConnectionRequests); 5302 } 5303 5304 } 5305 5306 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5307 private int mUntrustedReqCount; 5308 5309 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5310 super(l, c, tag, f); 5311 } 5312 5313 @Override 5314 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5315 if (!networkRequest.networkCapabilities.hasCapability( 5316 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5317 if (++mUntrustedReqCount == 1) { 5318 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5319 } 5320 } 5321 } 5322 5323 @Override 5324 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5325 if (!networkRequest.networkCapabilities.hasCapability( 5326 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5327 if (--mUntrustedReqCount == 0) { 5328 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5329 } 5330 } 5331 } 5332 5333 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5334 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5335 } 5336 } 5337 5338 void maybeRegisterNetworkFactory() { 5339 if (mNetworkFactory == null) { 5340 checkAndSetConnectivityInstance(); 5341 if (mCm != null) { 5342 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5343 NETWORKTYPE, mNetworkCapabilitiesFilter); 5344 mNetworkFactory.setScoreFilter(60); 5345 mNetworkFactory.register(); 5346 5347 // We can't filter untrusted network in the capabilities filter because a trusted 5348 // network would still satisfy a request that accepts untrusted ones. 5349 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5350 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5351 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5352 mUntrustedNetworkFactory.register(); 5353 } 5354 } 5355 } 5356 5357 /******************************************************** 5358 * HSM states 5359 *******************************************************/ 5360 5361 class DefaultState extends State { 5362 @Override 5363 public boolean processMessage(Message message) { 5364 logStateAndMessage(message, getClass().getSimpleName()); 5365 5366 switch (message.what) { 5367 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5368 AsyncChannel ac = (AsyncChannel) message.obj; 5369 if (ac == mWifiP2pChannel) { 5370 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5371 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5372 } else { 5373 loge("WifiP2pService connection failure, error=" + message.arg1); 5374 } 5375 } else { 5376 loge("got HALF_CONNECTED for unknown channel"); 5377 } 5378 break; 5379 } 5380 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5381 AsyncChannel ac = (AsyncChannel) message.obj; 5382 if (ac == mWifiP2pChannel) { 5383 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5384 //TODO: Re-establish connection to state machine after a delay 5385 // mWifiP2pChannel.connect(mContext, getHandler(), 5386 // mWifiP2pManager.getMessenger()); 5387 } 5388 break; 5389 } 5390 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5391 mBluetoothConnectionActive = (message.arg1 != 5392 BluetoothAdapter.STATE_DISCONNECTED); 5393 break; 5394 /* Synchronous call returns */ 5395 case CMD_PING_SUPPLICANT: 5396 case CMD_ENABLE_NETWORK: 5397 case CMD_ADD_OR_UPDATE_NETWORK: 5398 case CMD_REMOVE_NETWORK: 5399 case CMD_SAVE_CONFIG: 5400 replyToMessage(message, message.what, FAILURE); 5401 break; 5402 case CMD_GET_CAPABILITY_FREQ: 5403 replyToMessage(message, message.what, null); 5404 break; 5405 case CMD_GET_CONFIGURED_NETWORKS: 5406 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5407 break; 5408 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5409 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5410 break; 5411 case CMD_ENABLE_RSSI_POLL: 5412 mEnableRssiPolling = (message.arg1 == 1); 5413 break; 5414 case CMD_SET_HIGH_PERF_MODE: 5415 if (message.arg1 == 1) { 5416 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5417 } else { 5418 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5419 } 5420 break; 5421 case CMD_BOOT_COMPLETED: 5422 maybeRegisterNetworkFactory(); 5423 break; 5424 case CMD_SCREEN_STATE_CHANGED: 5425 handleScreenStateChanged(message.arg1 != 0); 5426 break; 5427 /* Discard */ 5428 case CMD_START_SCAN: 5429 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5430 break; 5431 case CMD_START_SUPPLICANT: 5432 case CMD_STOP_SUPPLICANT: 5433 case CMD_STOP_SUPPLICANT_FAILED: 5434 case CMD_START_DRIVER: 5435 case CMD_STOP_DRIVER: 5436 case CMD_DELAYED_STOP_DRIVER: 5437 case CMD_DRIVER_START_TIMED_OUT: 5438 case CMD_START_AP: 5439 case CMD_START_AP_SUCCESS: 5440 case CMD_START_AP_FAILURE: 5441 case CMD_STOP_AP: 5442 case CMD_TETHER_STATE_CHANGE: 5443 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5444 case CMD_DISCONNECT: 5445 case CMD_RECONNECT: 5446 case CMD_REASSOCIATE: 5447 case CMD_RELOAD_TLS_AND_RECONNECT: 5448 case WifiMonitor.SUP_CONNECTION_EVENT: 5449 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5450 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5451 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5452 case WifiMonitor.SCAN_RESULTS_EVENT: 5453 case WifiMonitor.SCAN_FAILED_EVENT: 5454 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5455 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5456 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5457 case WifiMonitor.WPS_OVERLAP_EVENT: 5458 case CMD_BLACKLIST_NETWORK: 5459 case CMD_CLEAR_BLACKLIST: 5460 case CMD_SET_OPERATIONAL_MODE: 5461 case CMD_SET_COUNTRY_CODE: 5462 case CMD_SET_FREQUENCY_BAND: 5463 case CMD_RSSI_POLL: 5464 case CMD_ENABLE_ALL_NETWORKS: 5465 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5466 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5467 /* Handled by WifiApConfigStore */ 5468 case CMD_SET_AP_CONFIG: 5469 case CMD_SET_AP_CONFIG_COMPLETED: 5470 case CMD_REQUEST_AP_CONFIG: 5471 case CMD_RESPONSE_AP_CONFIG: 5472 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5473 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5474 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5475 case CMD_DISABLE_P2P_RSP: 5476 case WifiMonitor.SUP_REQUEST_IDENTITY: 5477 case CMD_TEST_NETWORK_DISCONNECT: 5478 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5479 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5480 case CMD_TARGET_BSSID: 5481 case CMD_AUTO_CONNECT: 5482 case CMD_AUTO_ROAM: 5483 case CMD_AUTO_SAVE_NETWORK: 5484 case CMD_ASSOCIATED_BSSID: 5485 case CMD_UNWANTED_NETWORK: 5486 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5487 case CMD_ROAM_WATCHDOG_TIMER: 5488 case CMD_DISABLE_EPHEMERAL_NETWORK: 5489 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5490 case CMD_STARTED_PNO_DBG: 5491 case CMD_STARTED_GSCAN_DBG: 5492 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5493 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5494 break; 5495 case DhcpStateMachine.CMD_ON_QUIT: 5496 mDhcpStateMachine = null; 5497 break; 5498 case CMD_SET_SUSPEND_OPT_ENABLED: 5499 if (message.arg1 == 1) { 5500 mSuspendWakeLock.release(); 5501 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5502 } else { 5503 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5504 } 5505 break; 5506 case WifiMonitor.DRIVER_HUNG_EVENT: 5507 setSupplicantRunning(false); 5508 setSupplicantRunning(true); 5509 break; 5510 case WifiManager.CONNECT_NETWORK: 5511 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5512 WifiManager.BUSY); 5513 break; 5514 case WifiManager.FORGET_NETWORK: 5515 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5516 WifiManager.BUSY); 5517 break; 5518 case WifiManager.SAVE_NETWORK: 5519 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5520 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5521 WifiManager.BUSY); 5522 break; 5523 case WifiManager.START_WPS: 5524 replyToMessage(message, WifiManager.WPS_FAILED, 5525 WifiManager.BUSY); 5526 break; 5527 case WifiManager.CANCEL_WPS: 5528 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5529 WifiManager.BUSY); 5530 break; 5531 case WifiManager.DISABLE_NETWORK: 5532 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5533 WifiManager.BUSY); 5534 break; 5535 case WifiManager.RSSI_PKTCNT_FETCH: 5536 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5537 WifiManager.BUSY); 5538 break; 5539 case CMD_GET_SUPPORTED_FEATURES: 5540 int featureSet = WifiNative.getSupportedFeatureSet(); 5541 replyToMessage(message, message.what, featureSet); 5542 break; 5543 case CMD_FIRMWARE_ALERT: 5544 if (mWifiLogger != null) { 5545 byte[] buffer = (byte[])message.obj; 5546 mWifiLogger.captureAlertData(message.arg1, buffer); 5547 } 5548 break; 5549 case CMD_GET_LINK_LAYER_STATS: 5550 // Not supported hence reply with error message 5551 replyToMessage(message, message.what, null); 5552 break; 5553 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5554 NetworkInfo info = (NetworkInfo) message.obj; 5555 mP2pConnected.set(info.isConnected()); 5556 break; 5557 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5558 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5559 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5560 break; 5561 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5562 case CMD_UPDATE_LINKPROPERTIES: 5563 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5564 break; 5565 case CMD_GET_MATCHING_CONFIG: 5566 replyToMessage(message, message.what); 5567 break; 5568 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5569 case CMD_IP_CONFIGURATION_LOST: 5570 case CMD_IP_REACHABILITY_LOST: 5571 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5572 break; 5573 case CMD_GET_CONNECTION_STATISTICS: 5574 replyToMessage(message, message.what, mWifiConnectionStatistics); 5575 break; 5576 case CMD_REMOVE_APP_CONFIGURATIONS: 5577 deferMessage(message); 5578 break; 5579 case CMD_REMOVE_USER_CONFIGURATIONS: 5580 deferMessage(message); 5581 break; 5582 default: 5583 loge("Error! unhandled message" + message); 5584 break; 5585 } 5586 return HANDLED; 5587 } 5588 } 5589 5590 class InitialState extends State { 5591 @Override 5592 public void enter() { 5593 WifiNative.stopHal(); 5594 mWifiNative.unloadDriver(); 5595 if (mWifiP2pChannel == null) { 5596 mWifiP2pChannel = new AsyncChannel(); 5597 mWifiP2pChannel.connect(mContext, getHandler(), 5598 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5599 } 5600 5601 if (mWifiApConfigChannel == null) { 5602 mWifiApConfigChannel = new AsyncChannel(); 5603 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5604 mContext, getHandler()); 5605 wifiApConfigStore.loadApConfiguration(); 5606 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5607 wifiApConfigStore.getMessenger()); 5608 } 5609 5610 if (mWifiConfigStore.enableHalBasedPno.get()) { 5611 // make sure developer Settings are in sync with the config option 5612 mHalBasedPnoEnableInDevSettings = true; 5613 } 5614 } 5615 @Override 5616 public boolean processMessage(Message message) { 5617 logStateAndMessage(message, getClass().getSimpleName()); 5618 switch (message.what) { 5619 case CMD_START_SUPPLICANT: 5620 if (mWifiNative.loadDriver()) { 5621 try { 5622 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5623 } catch (Exception e) { 5624 loge("Failed to reload STA firmware " + e); 5625 // Continue 5626 } 5627 5628 try { 5629 // A runtime crash can leave the interface up and 5630 // IP addresses configured, and this affects 5631 // connectivity when supplicant starts up. 5632 // Ensure interface is down and we have no IP 5633 // addresses before a supplicant start. 5634 mNwService.setInterfaceDown(mInterfaceName); 5635 mNwService.clearInterfaceAddresses(mInterfaceName); 5636 5637 // Set privacy extensions 5638 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5639 5640 // IPv6 is enabled only as long as access point is connected since: 5641 // - IPv6 addresses and routes stick around after disconnection 5642 // - kernel is unaware when connected and fails to start IPv6 negotiation 5643 // - kernel can start autoconfiguration when 802.1x is not complete 5644 mNwService.disableIpv6(mInterfaceName); 5645 } catch (RemoteException re) { 5646 loge("Unable to change interface settings: " + re); 5647 } catch (IllegalStateException ie) { 5648 loge("Unable to change interface settings: " + ie); 5649 } 5650 5651 /* Stop a running supplicant after a runtime restart 5652 * Avoids issues with drivers that do not handle interface down 5653 * on a running supplicant properly. 5654 */ 5655 mWifiMonitor.killSupplicant(mP2pSupported); 5656 5657 if (WifiNative.startHal() == false) { 5658 /* starting HAL is optional */ 5659 loge("Failed to start HAL"); 5660 } 5661 5662 if (mWifiNative.startSupplicant(mP2pSupported)) { 5663 setWifiState(WIFI_STATE_ENABLING); 5664 if (DBG) log("Supplicant start successful"); 5665 mWifiMonitor.startMonitoring(); 5666 transitionTo(mSupplicantStartingState); 5667 } else { 5668 loge("Failed to start supplicant!"); 5669 } 5670 } else { 5671 loge("Failed to load driver"); 5672 } 5673 break; 5674 case CMD_START_AP: 5675 if (mWifiNative.loadDriver() == false) { 5676 loge("Failed to load driver for softap"); 5677 } else { 5678 if (enableSoftAp() == true) { 5679 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5680 transitionTo(mSoftApStartingState); 5681 } else { 5682 setWifiApState(WIFI_AP_STATE_FAILED, 5683 WifiManager.SAP_START_FAILURE_GENERAL); 5684 transitionTo(mInitialState); 5685 } 5686 } 5687 break; 5688 default: 5689 return NOT_HANDLED; 5690 } 5691 return HANDLED; 5692 } 5693 } 5694 5695 class SupplicantStartingState extends State { 5696 private void initializeWpsDetails() { 5697 String detail; 5698 detail = SystemProperties.get("ro.product.name", ""); 5699 if (!mWifiNative.setDeviceName(detail)) { 5700 loge("Failed to set device name " + detail); 5701 } 5702 detail = SystemProperties.get("ro.product.manufacturer", ""); 5703 if (!mWifiNative.setManufacturer(detail)) { 5704 loge("Failed to set manufacturer " + detail); 5705 } 5706 detail = SystemProperties.get("ro.product.model", ""); 5707 if (!mWifiNative.setModelName(detail)) { 5708 loge("Failed to set model name " + detail); 5709 } 5710 detail = SystemProperties.get("ro.product.model", ""); 5711 if (!mWifiNative.setModelNumber(detail)) { 5712 loge("Failed to set model number " + detail); 5713 } 5714 detail = SystemProperties.get("ro.serialno", ""); 5715 if (!mWifiNative.setSerialNumber(detail)) { 5716 loge("Failed to set serial number " + detail); 5717 } 5718 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5719 loge("Failed to set WPS config methods"); 5720 } 5721 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5722 loge("Failed to set primary device type " + mPrimaryDeviceType); 5723 } 5724 } 5725 5726 @Override 5727 public boolean processMessage(Message message) { 5728 logStateAndMessage(message, getClass().getSimpleName()); 5729 5730 switch(message.what) { 5731 case WifiMonitor.SUP_CONNECTION_EVENT: 5732 if (DBG) log("Supplicant connection established"); 5733 setWifiState(WIFI_STATE_ENABLED); 5734 mSupplicantRestartCount = 0; 5735 /* Reset the supplicant state to indicate the supplicant 5736 * state is not known at this time */ 5737 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5738 /* Initialize data structures */ 5739 mLastBssid = null; 5740 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5741 mLastSignalLevel = -1; 5742 5743 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5744 mWifiNative.enableSaveConfig(); 5745 mWifiConfigStore.loadAndEnableAllNetworks(); 5746 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5747 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5748 } 5749 initializeWpsDetails(); 5750 5751 sendSupplicantConnectionChangedBroadcast(true); 5752 transitionTo(mDriverStartedState); 5753 break; 5754 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5755 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5756 loge("Failed to setup control channel, restart supplicant"); 5757 mWifiMonitor.killSupplicant(mP2pSupported); 5758 transitionTo(mInitialState); 5759 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5760 } else { 5761 loge("Failed " + mSupplicantRestartCount + 5762 " times to start supplicant, unload driver"); 5763 mSupplicantRestartCount = 0; 5764 setWifiState(WIFI_STATE_UNKNOWN); 5765 transitionTo(mInitialState); 5766 } 5767 break; 5768 case CMD_START_SUPPLICANT: 5769 case CMD_STOP_SUPPLICANT: 5770 case CMD_START_AP: 5771 case CMD_STOP_AP: 5772 case CMD_START_DRIVER: 5773 case CMD_STOP_DRIVER: 5774 case CMD_SET_OPERATIONAL_MODE: 5775 case CMD_SET_COUNTRY_CODE: 5776 case CMD_SET_FREQUENCY_BAND: 5777 case CMD_START_PACKET_FILTERING: 5778 case CMD_STOP_PACKET_FILTERING: 5779 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5780 deferMessage(message); 5781 break; 5782 default: 5783 return NOT_HANDLED; 5784 } 5785 return HANDLED; 5786 } 5787 } 5788 5789 class SupplicantStartedState extends State { 5790 @Override 5791 public void enter() { 5792 /* Wifi is available as long as we have a connection to supplicant */ 5793 mNetworkInfo.setIsAvailable(true); 5794 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5795 5796 int defaultInterval = mContext.getResources().getInteger( 5797 R.integer.config_wifi_supplicant_scan_interval); 5798 5799 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5800 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5801 defaultInterval); 5802 5803 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5804 mWifiNative.setExternalSim(true); 5805 5806 /* turn on use of DFS channels */ 5807 WifiNative.setDfsFlag(true); 5808 5809 /* set country code */ 5810 setCountryCode(); 5811 5812 setRandomMacOui(); 5813 mWifiNative.enableAutoConnect(false); 5814 } 5815 5816 @Override 5817 public boolean processMessage(Message message) { 5818 logStateAndMessage(message, getClass().getSimpleName()); 5819 5820 switch(message.what) { 5821 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5822 if (mP2pSupported) { 5823 transitionTo(mWaitForP2pDisableState); 5824 } else { 5825 transitionTo(mSupplicantStoppingState); 5826 } 5827 break; 5828 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5829 loge("Connection lost, restart supplicant"); 5830 handleSupplicantConnectionLoss(true); 5831 handleNetworkDisconnect(); 5832 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5833 if (mP2pSupported) { 5834 transitionTo(mWaitForP2pDisableState); 5835 } else { 5836 transitionTo(mInitialState); 5837 } 5838 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5839 break; 5840 case WifiMonitor.SCAN_RESULTS_EVENT: 5841 case WifiMonitor.SCAN_FAILED_EVENT: 5842 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5843 closeRadioScanStats(); 5844 noteScanEnd(); 5845 setScanResults(); 5846 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5847 /* Just updated results from full scan, let apps know about this */ 5848 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5849 sendScanResultsAvailableBroadcast(scanSucceeded); 5850 } 5851 mSendScanResultsBroadcast = false; 5852 mIsScanOngoing = false; 5853 mIsFullScanOngoing = false; 5854 if (mBufferedScanMsg.size() > 0) 5855 sendMessage(mBufferedScanMsg.remove()); 5856 break; 5857 case CMD_PING_SUPPLICANT: 5858 boolean ok = mWifiNative.ping(); 5859 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5860 break; 5861 case CMD_GET_CAPABILITY_FREQ: 5862 String freqs = mWifiNative.getFreqCapability(); 5863 replyToMessage(message, message.what, freqs); 5864 break; 5865 case CMD_START_AP: 5866 /* Cannot start soft AP while in client mode */ 5867 loge("Failed to start soft AP with a running supplicant"); 5868 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5869 break; 5870 case CMD_SET_OPERATIONAL_MODE: 5871 mOperationalMode = message.arg1; 5872 mWifiConfigStore. 5873 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5874 break; 5875 case CMD_TARGET_BSSID: 5876 // Trying to associate to this BSSID 5877 if (message.obj != null) { 5878 mTargetRoamBSSID = (String) message.obj; 5879 } 5880 break; 5881 case CMD_GET_LINK_LAYER_STATS: 5882 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5883 if (stats == null) { 5884 // When firmware doesnt support link layer stats, return an empty object 5885 stats = new WifiLinkLayerStats(); 5886 } 5887 replyToMessage(message, message.what, stats); 5888 break; 5889 case CMD_SET_COUNTRY_CODE: 5890 String country = (String) message.obj; 5891 5892 final boolean persist = (message.arg2 == 1); 5893 final int sequence = message.arg1; 5894 5895 if (sequence != mCountryCodeSequence.get()) { 5896 if (DBG) log("set country code ignored due to sequnce num"); 5897 break; 5898 } 5899 if (DBG) log("set country code " + country); 5900 country = country.toUpperCase(Locale.ROOT); 5901 5902 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5903 if (mWifiNative.setCountryCode(country)) { 5904 mDriverSetCountryCode = country; 5905 } else { 5906 loge("Failed to set country code " + country); 5907 } 5908 } 5909 5910 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5911 break; 5912 default: 5913 return NOT_HANDLED; 5914 } 5915 return HANDLED; 5916 } 5917 5918 @Override 5919 public void exit() { 5920 mNetworkInfo.setIsAvailable(false); 5921 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5922 } 5923 } 5924 5925 class SupplicantStoppingState extends State { 5926 @Override 5927 public void enter() { 5928 /* Send any reset commands to supplicant before shutting it down */ 5929 handleNetworkDisconnect(); 5930 if (mDhcpStateMachine != null) { 5931 mDhcpStateMachine.doQuit(); 5932 } 5933 5934 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5935 if (suppState == null) suppState = "unknown"; 5936 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5937 if (p2pSuppState == null) p2pSuppState = "unknown"; 5938 5939 loge("SupplicantStoppingState: stopSupplicant " 5940 + " init.svc.wpa_supplicant=" + suppState 5941 + " init.svc.p2p_supplicant=" + p2pSuppState); 5942 mWifiMonitor.stopSupplicant(); 5943 5944 /* Send ourselves a delayed message to indicate failure after a wait time */ 5945 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5946 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5947 setWifiState(WIFI_STATE_DISABLING); 5948 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5949 } 5950 @Override 5951 public boolean processMessage(Message message) { 5952 logStateAndMessage(message, getClass().getSimpleName()); 5953 5954 switch(message.what) { 5955 case WifiMonitor.SUP_CONNECTION_EVENT: 5956 loge("Supplicant connection received while stopping"); 5957 break; 5958 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5959 if (DBG) log("Supplicant connection lost"); 5960 handleSupplicantConnectionLoss(false); 5961 transitionTo(mInitialState); 5962 break; 5963 case CMD_STOP_SUPPLICANT_FAILED: 5964 if (message.arg1 == mSupplicantStopFailureToken) { 5965 loge("Timed out on a supplicant stop, kill and proceed"); 5966 handleSupplicantConnectionLoss(true); 5967 transitionTo(mInitialState); 5968 } 5969 break; 5970 case CMD_START_SUPPLICANT: 5971 case CMD_STOP_SUPPLICANT: 5972 case CMD_START_AP: 5973 case CMD_STOP_AP: 5974 case CMD_START_DRIVER: 5975 case CMD_STOP_DRIVER: 5976 case CMD_SET_OPERATIONAL_MODE: 5977 case CMD_SET_COUNTRY_CODE: 5978 case CMD_SET_FREQUENCY_BAND: 5979 case CMD_START_PACKET_FILTERING: 5980 case CMD_STOP_PACKET_FILTERING: 5981 deferMessage(message); 5982 break; 5983 default: 5984 return NOT_HANDLED; 5985 } 5986 return HANDLED; 5987 } 5988 } 5989 5990 class DriverStartingState extends State { 5991 private int mTries; 5992 @Override 5993 public void enter() { 5994 mTries = 1; 5995 /* Send ourselves a delayed message to start driver a second time */ 5996 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5997 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5998 } 5999 @Override 6000 public boolean processMessage(Message message) { 6001 logStateAndMessage(message, getClass().getSimpleName()); 6002 6003 switch(message.what) { 6004 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6005 SupplicantState state = handleSupplicantStateChange(message); 6006 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6007 * a state that indicates driver has started, it is ready to 6008 * receive driver commands 6009 */ 6010 if (SupplicantState.isDriverActive(state)) { 6011 transitionTo(mDriverStartedState); 6012 } 6013 break; 6014 case CMD_DRIVER_START_TIMED_OUT: 6015 if (message.arg1 == mDriverStartToken) { 6016 if (mTries >= 2) { 6017 loge("Failed to start driver after " + mTries); 6018 transitionTo(mDriverStoppedState); 6019 } else { 6020 loge("Driver start failed, retrying"); 6021 mWakeLock.acquire(); 6022 mWifiNative.startDriver(); 6023 mWakeLock.release(); 6024 6025 ++mTries; 6026 /* Send ourselves a delayed message to start driver again */ 6027 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6028 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6029 } 6030 } 6031 break; 6032 /* Queue driver commands & connection events */ 6033 case CMD_START_DRIVER: 6034 case CMD_STOP_DRIVER: 6035 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6036 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6037 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6038 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6039 case WifiMonitor.WPS_OVERLAP_EVENT: 6040 case CMD_SET_COUNTRY_CODE: 6041 case CMD_SET_FREQUENCY_BAND: 6042 case CMD_START_PACKET_FILTERING: 6043 case CMD_STOP_PACKET_FILTERING: 6044 case CMD_START_SCAN: 6045 case CMD_DISCONNECT: 6046 case CMD_REASSOCIATE: 6047 case CMD_RECONNECT: 6048 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6049 deferMessage(message); 6050 break; 6051 case WifiMonitor.SCAN_RESULTS_EVENT: 6052 case WifiMonitor.SCAN_FAILED_EVENT: 6053 // Loose scan results obtained in Driver Starting state, they can only confuse 6054 // the state machine 6055 break; 6056 default: 6057 return NOT_HANDLED; 6058 } 6059 return HANDLED; 6060 } 6061 } 6062 6063 class DriverStartedState extends State { 6064 @Override 6065 public void enter() { 6066 6067 if (PDBG) { 6068 loge("DriverStartedState enter"); 6069 } 6070 6071 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6072 mIsRunning = true; 6073 mInDelayedStop = false; 6074 mDelayedStopCounter++; 6075 updateBatteryWorkSource(null); 6076 /** 6077 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6078 * When this mode is on, some of the low-level scan parameters used by the 6079 * driver are changed to reduce interference with bluetooth 6080 */ 6081 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6082 /* set frequency band of operation */ 6083 setFrequencyBand(); 6084 /* initialize network state */ 6085 setNetworkDetailedState(DetailedState.DISCONNECTED); 6086 6087 /* Remove any filtering on Multicast v6 at start */ 6088 mWifiNative.stopFilteringMulticastV6Packets(); 6089 6090 /* Reset Multicast v4 filtering state */ 6091 if (mFilteringMulticastV4Packets.get()) { 6092 mWifiNative.startFilteringMulticastV4Packets(); 6093 } else { 6094 mWifiNative.stopFilteringMulticastV4Packets(); 6095 } 6096 6097 mDhcpActive = false; 6098 6099 if (mOperationalMode != CONNECT_MODE) { 6100 mWifiNative.disconnect(); 6101 mWifiConfigStore.disableAllNetworks(); 6102 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6103 setWifiState(WIFI_STATE_DISABLED); 6104 } 6105 transitionTo(mScanModeState); 6106 } else { 6107 6108 // Status pulls in the current supplicant state and network connection state 6109 // events over the monitor connection. This helps framework sync up with 6110 // current supplicant state 6111 // TODO: actually check th supplicant status string and make sure the supplicant 6112 // is in disconnecte4d state. 6113 mWifiNative.status(); 6114 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6115 transitionTo(mDisconnectedState); 6116 transitionTo(mDisconnectedState); 6117 } 6118 6119 // We may have missed screen update at boot 6120 if (mScreenBroadcastReceived.get() == false) { 6121 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6122 Context.POWER_SERVICE); 6123 handleScreenStateChanged(powerManager.isScreenOn()); 6124 } else { 6125 // Set the right suspend mode settings 6126 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6127 && mUserWantsSuspendOpt.get()); 6128 } 6129 mWifiNative.setPowerSave(true); 6130 6131 if (mP2pSupported) { 6132 if (mOperationalMode == CONNECT_MODE) { 6133 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6134 } else { 6135 // P2P statemachine starts in disabled state, and is not enabled until 6136 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6137 // keep it disabled. 6138 } 6139 } 6140 6141 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6142 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6143 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6144 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6145 6146 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6147 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6148 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6149 mHalBasedPnoDriverSupported = true; 6150 } 6151 6152 // Enable link layer stats gathering 6153 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6154 6155 if (PDBG) { 6156 loge("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6157 + " feature=" + mHalFeatureSet); 6158 } 6159 } 6160 6161 @Override 6162 public boolean processMessage(Message message) { 6163 logStateAndMessage(message, getClass().getSimpleName()); 6164 6165 switch(message.what) { 6166 case CMD_START_SCAN: 6167 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6168 break; 6169 case CMD_SET_FREQUENCY_BAND: 6170 int band = message.arg1; 6171 if (DBG) log("set frequency band " + band); 6172 if (mWifiNative.setBand(band)) { 6173 6174 if (PDBG) loge("did set frequency band " + band); 6175 6176 mFrequencyBand.set(band); 6177 // Flush old data - like scan results 6178 mWifiNative.bssFlush(); 6179 // Fetch the latest scan results when frequency band is set 6180// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6181 6182 if (PDBG) loge("done set frequency band " + band); 6183 6184 } else { 6185 loge("Failed to set frequency band " + band); 6186 } 6187 break; 6188 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6189 mBluetoothConnectionActive = (message.arg1 != 6190 BluetoothAdapter.STATE_DISCONNECTED); 6191 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6192 break; 6193 case CMD_STOP_DRIVER: 6194 int mode = message.arg1; 6195 6196 /* Already doing a delayed stop */ 6197 if (mInDelayedStop) { 6198 if (DBG) log("Already in delayed stop"); 6199 break; 6200 } 6201 /* disconnect right now, but leave the driver running for a bit */ 6202 mWifiConfigStore.disableAllNetworks(); 6203 6204 mInDelayedStop = true; 6205 mDelayedStopCounter++; 6206 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6207 6208 /* send regular delayed shut down */ 6209 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6210 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 6211 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6212 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6213 DRIVER_STOP_REQUEST, driverStopIntent, 6214 PendingIntent.FLAG_UPDATE_CURRENT); 6215 6216 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6217 + mDriverStopDelayMs, mDriverStopIntent); 6218 break; 6219 case CMD_START_DRIVER: 6220 if (mInDelayedStop) { 6221 mInDelayedStop = false; 6222 mDelayedStopCounter++; 6223 mAlarmManager.cancel(mDriverStopIntent); 6224 if (DBG) log("Delayed stop ignored due to start"); 6225 if (mOperationalMode == CONNECT_MODE) { 6226 mWifiConfigStore.enableAllNetworks(); 6227 } 6228 } 6229 break; 6230 case CMD_DELAYED_STOP_DRIVER: 6231 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6232 if (message.arg1 != mDelayedStopCounter) break; 6233 if (getCurrentState() != mDisconnectedState) { 6234 mWifiNative.disconnect(); 6235 handleNetworkDisconnect(); 6236 } 6237 mWakeLock.acquire(); 6238 mWifiNative.stopDriver(); 6239 mWakeLock.release(); 6240 if (mP2pSupported) { 6241 transitionTo(mWaitForP2pDisableState); 6242 } else { 6243 transitionTo(mDriverStoppingState); 6244 } 6245 break; 6246 case CMD_START_PACKET_FILTERING: 6247 if (message.arg1 == MULTICAST_V6) { 6248 mWifiNative.startFilteringMulticastV6Packets(); 6249 } else if (message.arg1 == MULTICAST_V4) { 6250 mWifiNative.startFilteringMulticastV4Packets(); 6251 } else { 6252 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6253 } 6254 break; 6255 case CMD_STOP_PACKET_FILTERING: 6256 if (message.arg1 == MULTICAST_V6) { 6257 mWifiNative.stopFilteringMulticastV6Packets(); 6258 } else if (message.arg1 == MULTICAST_V4) { 6259 mWifiNative.stopFilteringMulticastV4Packets(); 6260 } else { 6261 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6262 } 6263 break; 6264 case CMD_SET_SUSPEND_OPT_ENABLED: 6265 if (message.arg1 == 1) { 6266 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6267 mSuspendWakeLock.release(); 6268 } else { 6269 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6270 } 6271 break; 6272 case CMD_SET_HIGH_PERF_MODE: 6273 if (message.arg1 == 1) { 6274 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6275 } else { 6276 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6277 } 6278 break; 6279 case CMD_ENABLE_TDLS: 6280 if (message.obj != null) { 6281 String remoteAddress = (String) message.obj; 6282 boolean enable = (message.arg1 == 1); 6283 mWifiNative.startTdls(remoteAddress, enable); 6284 } 6285 break; 6286 case WifiMonitor.ANQP_DONE_EVENT: 6287 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6288 break; 6289 default: 6290 return NOT_HANDLED; 6291 } 6292 return HANDLED; 6293 } 6294 @Override 6295 public void exit() { 6296 6297 mWifiLogger.stopLogging(); 6298 6299 mIsRunning = false; 6300 updateBatteryWorkSource(null); 6301 mScanResults = new ArrayList<>(); 6302 6303 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6304 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6305 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6306 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6307 noteScanEnd(); // wrap up any pending request. 6308 mBufferedScanMsg.clear(); 6309 } 6310 } 6311 6312 class WaitForP2pDisableState extends State { 6313 private State mTransitionToState; 6314 @Override 6315 public void enter() { 6316 switch (getCurrentMessage().what) { 6317 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6318 mTransitionToState = mInitialState; 6319 break; 6320 case CMD_DELAYED_STOP_DRIVER: 6321 mTransitionToState = mDriverStoppingState; 6322 break; 6323 case CMD_STOP_SUPPLICANT: 6324 mTransitionToState = mSupplicantStoppingState; 6325 break; 6326 default: 6327 mTransitionToState = mDriverStoppingState; 6328 break; 6329 } 6330 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6331 } 6332 @Override 6333 public boolean processMessage(Message message) { 6334 logStateAndMessage(message, getClass().getSimpleName()); 6335 6336 switch(message.what) { 6337 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6338 transitionTo(mTransitionToState); 6339 break; 6340 /* Defer wifi start/shut and driver commands */ 6341 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6342 case CMD_START_SUPPLICANT: 6343 case CMD_STOP_SUPPLICANT: 6344 case CMD_START_AP: 6345 case CMD_STOP_AP: 6346 case CMD_START_DRIVER: 6347 case CMD_STOP_DRIVER: 6348 case CMD_SET_OPERATIONAL_MODE: 6349 case CMD_SET_COUNTRY_CODE: 6350 case CMD_SET_FREQUENCY_BAND: 6351 case CMD_START_PACKET_FILTERING: 6352 case CMD_STOP_PACKET_FILTERING: 6353 case CMD_START_SCAN: 6354 case CMD_DISCONNECT: 6355 case CMD_REASSOCIATE: 6356 case CMD_RECONNECT: 6357 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6358 deferMessage(message); 6359 break; 6360 default: 6361 return NOT_HANDLED; 6362 } 6363 return HANDLED; 6364 } 6365 } 6366 6367 class DriverStoppingState extends State { 6368 @Override 6369 public boolean processMessage(Message message) { 6370 logStateAndMessage(message, getClass().getSimpleName()); 6371 6372 switch(message.what) { 6373 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6374 SupplicantState state = handleSupplicantStateChange(message); 6375 if (state == SupplicantState.INTERFACE_DISABLED) { 6376 transitionTo(mDriverStoppedState); 6377 } 6378 break; 6379 /* Queue driver commands */ 6380 case CMD_START_DRIVER: 6381 case CMD_STOP_DRIVER: 6382 case CMD_SET_COUNTRY_CODE: 6383 case CMD_SET_FREQUENCY_BAND: 6384 case CMD_START_PACKET_FILTERING: 6385 case CMD_STOP_PACKET_FILTERING: 6386 case CMD_START_SCAN: 6387 case CMD_DISCONNECT: 6388 case CMD_REASSOCIATE: 6389 case CMD_RECONNECT: 6390 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6391 deferMessage(message); 6392 break; 6393 default: 6394 return NOT_HANDLED; 6395 } 6396 return HANDLED; 6397 } 6398 } 6399 6400 class DriverStoppedState extends State { 6401 @Override 6402 public boolean processMessage(Message message) { 6403 logStateAndMessage(message, getClass().getSimpleName()); 6404 switch (message.what) { 6405 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6406 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6407 SupplicantState state = stateChangeResult.state; 6408 // A WEXT bug means that we can be back to driver started state 6409 // unexpectedly 6410 if (SupplicantState.isDriverActive(state)) { 6411 transitionTo(mDriverStartedState); 6412 } 6413 break; 6414 case CMD_START_DRIVER: 6415 mWakeLock.acquire(); 6416 mWifiNative.startDriver(); 6417 mWakeLock.release(); 6418 transitionTo(mDriverStartingState); 6419 break; 6420 default: 6421 return NOT_HANDLED; 6422 } 6423 return HANDLED; 6424 } 6425 } 6426 6427 class ScanModeState extends State { 6428 private int mLastOperationMode; 6429 @Override 6430 public void enter() { 6431 mLastOperationMode = mOperationalMode; 6432 } 6433 @Override 6434 public boolean processMessage(Message message) { 6435 logStateAndMessage(message, getClass().getSimpleName()); 6436 6437 switch(message.what) { 6438 case CMD_SET_OPERATIONAL_MODE: 6439 if (message.arg1 == CONNECT_MODE) { 6440 6441 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6442 setWifiState(WIFI_STATE_ENABLED); 6443 // Load and re-enable networks when going back to enabled state 6444 // This is essential for networks to show up after restore 6445 mWifiConfigStore.loadAndEnableAllNetworks(); 6446 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6447 } else { 6448 mWifiConfigStore.enableAllNetworks(); 6449 } 6450 6451 // Try autojoining with recent network already present in the cache 6452 // If none are found then trigger a scan which will trigger autojoin 6453 // upon reception of scan results event 6454 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6455 startScan(ENABLE_WIFI, 0, null, null); 6456 } 6457 6458 // Loose last selection choice since user toggled WiFi 6459 mWifiConfigStore. 6460 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6461 6462 mOperationalMode = CONNECT_MODE; 6463 transitionTo(mDisconnectedState); 6464 } else { 6465 // Nothing to do 6466 return HANDLED; 6467 } 6468 break; 6469 // Handle scan. All the connection related commands are 6470 // handled only in ConnectModeState 6471 case CMD_START_SCAN: 6472 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6473 break; 6474 default: 6475 return NOT_HANDLED; 6476 } 6477 return HANDLED; 6478 } 6479 } 6480 6481 6482 String smToString(Message message) { 6483 return smToString(message.what); 6484 } 6485 6486 String smToString(int what) { 6487 String s = "unknown"; 6488 switch (what) { 6489 case WifiMonitor.DRIVER_HUNG_EVENT: 6490 s = "DRIVER_HUNG_EVENT"; 6491 break; 6492 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6493 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6494 break; 6495 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6496 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6497 break; 6498 case CMD_SET_FREQUENCY_BAND: 6499 s = "CMD_SET_FREQUENCY_BAND"; 6500 break; 6501 case CMD_DELAYED_NETWORK_DISCONNECT: 6502 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6503 break; 6504 case CMD_TEST_NETWORK_DISCONNECT: 6505 s = "CMD_TEST_NETWORK_DISCONNECT"; 6506 break; 6507 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6508 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6509 break; 6510 case CMD_DISABLE_EPHEMERAL_NETWORK: 6511 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6512 break; 6513 case CMD_START_DRIVER: 6514 s = "CMD_START_DRIVER"; 6515 break; 6516 case CMD_STOP_DRIVER: 6517 s = "CMD_STOP_DRIVER"; 6518 break; 6519 case CMD_STOP_SUPPLICANT: 6520 s = "CMD_STOP_SUPPLICANT"; 6521 break; 6522 case CMD_STOP_SUPPLICANT_FAILED: 6523 s = "CMD_STOP_SUPPLICANT_FAILED"; 6524 break; 6525 case CMD_START_SUPPLICANT: 6526 s = "CMD_START_SUPPLICANT"; 6527 break; 6528 case CMD_REQUEST_AP_CONFIG: 6529 s = "CMD_REQUEST_AP_CONFIG"; 6530 break; 6531 case CMD_RESPONSE_AP_CONFIG: 6532 s = "CMD_RESPONSE_AP_CONFIG"; 6533 break; 6534 case CMD_TETHER_STATE_CHANGE: 6535 s = "CMD_TETHER_STATE_CHANGE"; 6536 break; 6537 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6538 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6539 break; 6540 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6541 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6542 break; 6543 case CMD_ADD_OR_UPDATE_NETWORK: 6544 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6545 break; 6546 case CMD_REMOVE_NETWORK: 6547 s = "CMD_REMOVE_NETWORK"; 6548 break; 6549 case CMD_ENABLE_NETWORK: 6550 s = "CMD_ENABLE_NETWORK"; 6551 break; 6552 case CMD_ENABLE_ALL_NETWORKS: 6553 s = "CMD_ENABLE_ALL_NETWORKS"; 6554 break; 6555 case CMD_AUTO_CONNECT: 6556 s = "CMD_AUTO_CONNECT"; 6557 break; 6558 case CMD_AUTO_ROAM: 6559 s = "CMD_AUTO_ROAM"; 6560 break; 6561 case CMD_AUTO_SAVE_NETWORK: 6562 s = "CMD_AUTO_SAVE_NETWORK"; 6563 break; 6564 case CMD_BOOT_COMPLETED: 6565 s = "CMD_BOOT_COMPLETED"; 6566 break; 6567 case DhcpStateMachine.CMD_START_DHCP: 6568 s = "CMD_START_DHCP"; 6569 break; 6570 case DhcpStateMachine.CMD_STOP_DHCP: 6571 s = "CMD_STOP_DHCP"; 6572 break; 6573 case DhcpStateMachine.CMD_RENEW_DHCP: 6574 s = "CMD_RENEW_DHCP"; 6575 break; 6576 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6577 s = "CMD_PRE_DHCP_ACTION"; 6578 break; 6579 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6580 s = "CMD_POST_DHCP_ACTION"; 6581 break; 6582 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6583 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6584 break; 6585 case DhcpStateMachine.CMD_ON_QUIT: 6586 s = "CMD_ON_QUIT"; 6587 break; 6588 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6589 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6590 break; 6591 case WifiManager.DISABLE_NETWORK: 6592 s = "WifiManager.DISABLE_NETWORK"; 6593 break; 6594 case CMD_BLACKLIST_NETWORK: 6595 s = "CMD_BLACKLIST_NETWORK"; 6596 break; 6597 case CMD_CLEAR_BLACKLIST: 6598 s = "CMD_CLEAR_BLACKLIST"; 6599 break; 6600 case CMD_SAVE_CONFIG: 6601 s = "CMD_SAVE_CONFIG"; 6602 break; 6603 case CMD_GET_CONFIGURED_NETWORKS: 6604 s = "CMD_GET_CONFIGURED_NETWORKS"; 6605 break; 6606 case CMD_GET_SUPPORTED_FEATURES: 6607 s = "CMD_GET_SUPPORTED_FEATURES"; 6608 break; 6609 case CMD_UNWANTED_NETWORK: 6610 s = "CMD_UNWANTED_NETWORK"; 6611 break; 6612 case CMD_NETWORK_STATUS: 6613 s = "CMD_NETWORK_STATUS"; 6614 break; 6615 case CMD_GET_LINK_LAYER_STATS: 6616 s = "CMD_GET_LINK_LAYER_STATS"; 6617 break; 6618 case CMD_GET_MATCHING_CONFIG: 6619 s = "CMD_GET_MATCHING_CONFIG"; 6620 break; 6621 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6622 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6623 break; 6624 case CMD_DISCONNECT: 6625 s = "CMD_DISCONNECT"; 6626 break; 6627 case CMD_RECONNECT: 6628 s = "CMD_RECONNECT"; 6629 break; 6630 case CMD_REASSOCIATE: 6631 s = "CMD_REASSOCIATE"; 6632 break; 6633 case CMD_GET_CONNECTION_STATISTICS: 6634 s = "CMD_GET_CONNECTION_STATISTICS"; 6635 break; 6636 case CMD_SET_HIGH_PERF_MODE: 6637 s = "CMD_SET_HIGH_PERF_MODE"; 6638 break; 6639 case CMD_SET_COUNTRY_CODE: 6640 s = "CMD_SET_COUNTRY_CODE"; 6641 break; 6642 case CMD_ENABLE_RSSI_POLL: 6643 s = "CMD_ENABLE_RSSI_POLL"; 6644 break; 6645 case CMD_RSSI_POLL: 6646 s = "CMD_RSSI_POLL"; 6647 break; 6648 case CMD_START_PACKET_FILTERING: 6649 s = "CMD_START_PACKET_FILTERING"; 6650 break; 6651 case CMD_STOP_PACKET_FILTERING: 6652 s = "CMD_STOP_PACKET_FILTERING"; 6653 break; 6654 case CMD_SET_SUSPEND_OPT_ENABLED: 6655 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6656 break; 6657 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6658 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6659 break; 6660 case CMD_UPDATE_LINKPROPERTIES: 6661 s = "CMD_UPDATE_LINKPROPERTIES"; 6662 break; 6663 case CMD_RELOAD_TLS_AND_RECONNECT: 6664 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6665 break; 6666 case WifiManager.CONNECT_NETWORK: 6667 s = "CONNECT_NETWORK"; 6668 break; 6669 case WifiManager.SAVE_NETWORK: 6670 s = "SAVE_NETWORK"; 6671 break; 6672 case WifiManager.FORGET_NETWORK: 6673 s = "FORGET_NETWORK"; 6674 break; 6675 case WifiMonitor.SUP_CONNECTION_EVENT: 6676 s = "SUP_CONNECTION_EVENT"; 6677 break; 6678 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6679 s = "SUP_DISCONNECTION_EVENT"; 6680 break; 6681 case WifiMonitor.SCAN_RESULTS_EVENT: 6682 s = "SCAN_RESULTS_EVENT"; 6683 break; 6684 case WifiMonitor.SCAN_FAILED_EVENT: 6685 s = "SCAN_FAILED_EVENT"; 6686 break; 6687 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6688 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6689 break; 6690 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6691 s = "AUTHENTICATION_FAILURE_EVENT"; 6692 break; 6693 case WifiMonitor.SSID_TEMP_DISABLED: 6694 s = "SSID_TEMP_DISABLED"; 6695 break; 6696 case WifiMonitor.SSID_REENABLED: 6697 s = "SSID_REENABLED"; 6698 break; 6699 case WifiMonitor.WPS_SUCCESS_EVENT: 6700 s = "WPS_SUCCESS_EVENT"; 6701 break; 6702 case WifiMonitor.WPS_FAIL_EVENT: 6703 s = "WPS_FAIL_EVENT"; 6704 break; 6705 case WifiMonitor.SUP_REQUEST_IDENTITY: 6706 s = "SUP_REQUEST_IDENTITY"; 6707 break; 6708 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6709 s = "NETWORK_CONNECTION_EVENT"; 6710 break; 6711 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6712 s = "NETWORK_DISCONNECTION_EVENT"; 6713 break; 6714 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6715 s = "ASSOCIATION_REJECTION_EVENT"; 6716 break; 6717 case WifiMonitor.ANQP_DONE_EVENT: 6718 s = "WifiMonitor.ANQP_DONE_EVENT"; 6719 break; 6720 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6721 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6722 break; 6723 case WifiMonitor.HS20_DEAUTH_EVENT: 6724 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6725 break; 6726 case WifiMonitor.GAS_QUERY_START_EVENT: 6727 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6728 break; 6729 case CMD_SET_OPERATIONAL_MODE: 6730 s = "CMD_SET_OPERATIONAL_MODE"; 6731 break; 6732 case CMD_START_SCAN: 6733 s = "CMD_START_SCAN"; 6734 break; 6735 case CMD_DISABLE_P2P_RSP: 6736 s = "CMD_DISABLE_P2P_RSP"; 6737 break; 6738 case CMD_DISABLE_P2P_REQ: 6739 s = "CMD_DISABLE_P2P_REQ"; 6740 break; 6741 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6742 s = "GOOD_LINK_DETECTED"; 6743 break; 6744 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6745 s = "POOR_LINK_DETECTED"; 6746 break; 6747 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6748 s = "GROUP_CREATING_TIMED_OUT"; 6749 break; 6750 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6751 s = "P2P_CONNECTION_CHANGED"; 6752 break; 6753 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6754 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6755 break; 6756 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6757 s = "P2P.SET_MIRACAST_MODE"; 6758 break; 6759 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6760 s = "P2P.BLOCK_DISCOVERY"; 6761 break; 6762 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6763 s = "P2P.SET_COUNTRY_CODE"; 6764 break; 6765 case WifiManager.CANCEL_WPS: 6766 s = "CANCEL_WPS"; 6767 break; 6768 case WifiManager.CANCEL_WPS_FAILED: 6769 s = "CANCEL_WPS_FAILED"; 6770 break; 6771 case WifiManager.CANCEL_WPS_SUCCEDED: 6772 s = "CANCEL_WPS_SUCCEDED"; 6773 break; 6774 case WifiManager.START_WPS: 6775 s = "START_WPS"; 6776 break; 6777 case WifiManager.START_WPS_SUCCEEDED: 6778 s = "START_WPS_SUCCEEDED"; 6779 break; 6780 case WifiManager.WPS_FAILED: 6781 s = "WPS_FAILED"; 6782 break; 6783 case WifiManager.WPS_COMPLETED: 6784 s = "WPS_COMPLETED"; 6785 break; 6786 case WifiManager.RSSI_PKTCNT_FETCH: 6787 s = "RSSI_PKTCNT_FETCH"; 6788 break; 6789 case CMD_IP_CONFIGURATION_LOST: 6790 s = "CMD_IP_CONFIGURATION_LOST"; 6791 break; 6792 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6793 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6794 break; 6795 case CMD_IP_REACHABILITY_LOST: 6796 s = "CMD_IP_REACHABILITY_LOST"; 6797 break; 6798 case CMD_STATIC_IP_SUCCESS: 6799 s = "CMD_STATIC_IP_SUCCESSFUL"; 6800 break; 6801 case CMD_STATIC_IP_FAILURE: 6802 s = "CMD_STATIC_IP_FAILURE"; 6803 break; 6804 case DhcpStateMachine.DHCP_SUCCESS: 6805 s = "DHCP_SUCCESS"; 6806 break; 6807 case DhcpStateMachine.DHCP_FAILURE: 6808 s = "DHCP_FAILURE"; 6809 break; 6810 case CMD_TARGET_BSSID: 6811 s = "CMD_TARGET_BSSID"; 6812 break; 6813 case CMD_ASSOCIATED_BSSID: 6814 s = "CMD_ASSOCIATED_BSSID"; 6815 break; 6816 case CMD_REMOVE_APP_CONFIGURATIONS: 6817 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6818 break; 6819 case CMD_REMOVE_USER_CONFIGURATIONS: 6820 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6821 break; 6822 case CMD_ROAM_WATCHDOG_TIMER: 6823 s = "CMD_ROAM_WATCHDOG_TIMER"; 6824 break; 6825 case CMD_SCREEN_STATE_CHANGED: 6826 s = "CMD_SCREEN_STATE_CHANGED"; 6827 break; 6828 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6829 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6830 break; 6831 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6832 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6833 break; 6834 case CMD_STARTED_PNO_DBG: 6835 s = "CMD_STARTED_PNO_DBG"; 6836 break; 6837 case CMD_STARTED_GSCAN_DBG: 6838 s = "CMD_STARTED_GSCAN_DBG"; 6839 break; 6840 case CMD_PNO_NETWORK_FOUND: 6841 s = "CMD_PNO_NETWORK_FOUND"; 6842 break; 6843 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6844 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6845 break; 6846 default: 6847 s = "what:" + Integer.toString(what); 6848 break; 6849 } 6850 return s; 6851 } 6852 6853 void registerConnected() { 6854 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6855 long now_ms = System.currentTimeMillis(); 6856 // We are switching away from this configuration, 6857 // hence record the time we were connected last 6858 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6859 if (config != null) { 6860 config.lastConnected = System.currentTimeMillis(); 6861 config.autoJoinBailedDueToLowRssi = false; 6862 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6863 config.numConnectionFailures = 0; 6864 config.numIpConfigFailures = 0; 6865 config.numAuthFailures = 0; 6866 config.numAssociation++; 6867 } 6868 mBadLinkspeedcount = 0; 6869 } 6870 } 6871 6872 void registerDisconnected() { 6873 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6874 long now_ms = System.currentTimeMillis(); 6875 // We are switching away from this configuration, 6876 // hence record the time we were connected last 6877 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6878 if (config != null) { 6879 config.lastDisconnected = System.currentTimeMillis(); 6880 if (config.ephemeral) { 6881 // Remove ephemeral WifiConfigurations from file 6882 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6883 } 6884 } 6885 } 6886 } 6887 6888 void noteWifiDisabledWhileAssociated() { 6889 // We got disabled by user while we were associated, make note of it 6890 int rssi = mWifiInfo.getRssi(); 6891 WifiConfiguration config = getCurrentWifiConfiguration(); 6892 if (getCurrentState() == mConnectedState 6893 && rssi != WifiInfo.INVALID_RSSI 6894 && config != null) { 6895 boolean is24GHz = mWifiInfo.is24GHz(); 6896 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6897 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6898 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6899 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6900 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6901 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6902 if (isBadRSSI) { 6903 // Take note that we got disabled while RSSI was Bad 6904 config.numUserTriggeredWifiDisableLowRSSI++; 6905 } else if (isLowRSSI) { 6906 // Take note that we got disabled while RSSI was Low 6907 config.numUserTriggeredWifiDisableBadRSSI++; 6908 } else if (!isHighRSSI) { 6909 // Take note that we got disabled while RSSI was Not high 6910 config.numUserTriggeredWifiDisableNotHighRSSI++; 6911 } 6912 } 6913 } 6914 6915 WifiConfiguration getCurrentWifiConfiguration() { 6916 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6917 return null; 6918 } 6919 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6920 } 6921 6922 ScanResult getCurrentScanResult() { 6923 WifiConfiguration config = getCurrentWifiConfiguration(); 6924 if (config == null) { 6925 return null; 6926 } 6927 String BSSID = mWifiInfo.getBSSID(); 6928 if (BSSID == null) { 6929 BSSID = mTargetRoamBSSID; 6930 } 6931 ScanDetailCache scanDetailCache = 6932 mWifiConfigStore.getScanDetailCache(config); 6933 6934 if (scanDetailCache == null) { 6935 return null; 6936 } 6937 6938 return scanDetailCache.get(BSSID); 6939 } 6940 6941 String getCurrentBSSID() { 6942 if (linkDebouncing) { 6943 return null; 6944 } 6945 return mLastBssid; 6946 } 6947 6948 class ConnectModeState extends State { 6949 6950 @Override 6951 public void enter() { 6952 connectScanningService(); 6953 } 6954 6955 @Override 6956 public boolean processMessage(Message message) { 6957 WifiConfiguration config; 6958 int netId; 6959 boolean ok; 6960 boolean didDisconnect; 6961 String bssid; 6962 String ssid; 6963 NetworkUpdateResult result; 6964 logStateAndMessage(message, getClass().getSimpleName()); 6965 6966 switch (message.what) { 6967 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6968 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6969 didBlackListBSSID = false; 6970 bssid = (String) message.obj; 6971 if (bssid == null || TextUtils.isEmpty(bssid)) { 6972 // If BSSID is null, use the target roam BSSID 6973 bssid = mTargetRoamBSSID; 6974 } 6975 if (bssid != null) { 6976 // If we have a BSSID, tell configStore to black list it 6977 synchronized(mScanResultCache) { 6978 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6979 (mLastNetworkId, bssid, false); 6980 } 6981 } 6982 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6983 break; 6984 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6985 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6986 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6987 break; 6988 case WifiMonitor.SSID_TEMP_DISABLED: 6989 case WifiMonitor.SSID_REENABLED: 6990 String substr = (String) message.obj; 6991 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6992 "temp-disabled" : "re-enabled"; 6993 loge("ConnectModeState SSID state=" + en + " nid=" 6994 + Integer.toString(message.arg1) + " [" + substr + "]"); 6995 synchronized(mScanResultCache) { 6996 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6997 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6998 } 6999 break; 7000 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7001 SupplicantState state = handleSupplicantStateChange(message); 7002 // A driver/firmware hang can now put the interface in a down state. 7003 // We detect the interface going down and recover from it 7004 if (!SupplicantState.isDriverActive(state)) { 7005 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7006 handleNetworkDisconnect(); 7007 } 7008 log("Detected an interface down, restart driver"); 7009 transitionTo(mDriverStoppedState); 7010 sendMessage(CMD_START_DRIVER); 7011 break; 7012 } 7013 7014 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7015 // when authentication times out after a successful connection, 7016 // we can figure this from the supplicant state. If supplicant 7017 // state is DISCONNECTED, but the mNetworkInfo says we are not 7018 // disconnected, we need to handle a disconnection 7019 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7020 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7021 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7022 handleNetworkDisconnect(); 7023 transitionTo(mDisconnectedState); 7024 } 7025 7026 // If we have COMPLETED a connection to a BSSID, start doing 7027 // DNAv4/DNAv6 -style probing for on-link neighbors of 7028 // interest (e.g. routers); harmless if none are configured. 7029 if (state == SupplicantState.COMPLETED) { 7030 if (mIpReachabilityMonitor != null) { 7031 mIpReachabilityMonitor.probeAll(); 7032 } 7033 } 7034 break; 7035 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7036 if (message.arg1 == 1) { 7037 mWifiNative.disconnect(); 7038 mTemporarilyDisconnectWifi = true; 7039 } else { 7040 mWifiNative.reconnect(); 7041 mTemporarilyDisconnectWifi = false; 7042 } 7043 break; 7044 case CMD_ADD_OR_UPDATE_NETWORK: 7045 config = (WifiConfiguration) message.obj; 7046 7047 if (!recordUidIfAuthorized(config, message.sendingUid, 7048 /* onlyAnnotate */ false)) { 7049 loge("Not authorized to update network " 7050 + " config=" + config.SSID 7051 + " cnid=" + config.networkId 7052 + " uid=" + message.sendingUid); 7053 replyToMessage(message, message.what, FAILURE); 7054 break; 7055 } 7056 7057 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7058 if (res < 0) { 7059 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7060 } else { 7061 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7062 if (curConfig != null && config != null) { 7063 if (curConfig.priority < config.priority 7064 && config.status == WifiConfiguration.Status.ENABLED) { 7065 // Interpret this as a connect attempt 7066 // Set the last selected configuration so as to allow the system to 7067 // stick the last user choice without persisting the choice 7068 mWifiConfigStore.setLastSelectedConfiguration(res); 7069 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7070 mWifiConfigStore.writeKnownNetworkHistory(false); 7071 7072 // Remember time of last connection attempt 7073 lastConnectAttempt = System.currentTimeMillis(); 7074 7075 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7076 7077 // As a courtesy to the caller, trigger a scan now 7078 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7079 } 7080 } 7081 } 7082 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7083 break; 7084 case CMD_REMOVE_NETWORK: 7085 netId = message.arg1; 7086 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7087 /* onlyAnnotate */ false)) { 7088 loge("Not authorized to remove network " 7089 + " cnid=" + netId 7090 + " uid=" + message.sendingUid); 7091 replyToMessage(message, message.what, FAILURE); 7092 break; 7093 } 7094 7095 ok = mWifiConfigStore.removeNetwork(message.arg1); 7096 if (!ok) { 7097 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7098 } 7099 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7100 break; 7101 case CMD_ENABLE_NETWORK: 7102 boolean others = message.arg2 == 1; 7103 // Tell autojoin the user did try to select to that network 7104 // However, do NOT persist the choice by bumping the priority of the network 7105 if (others) { 7106 mWifiAutoJoinController. 7107 updateConfigurationHistory(message.arg1, true, false); 7108 // Set the last selected configuration so as to allow the system to 7109 // stick the last user choice without persisting the choice 7110 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 7111 7112 // Remember time of last connection attempt 7113 lastConnectAttempt = System.currentTimeMillis(); 7114 7115 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7116 } 7117 // Cancel auto roam requests 7118 autoRoamSetBSSID(message.arg1, "any"); 7119 7120 int uid = message.sendingUid; 7121 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1, uid); 7122 if (!ok) { 7123 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7124 } 7125 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7126 break; 7127 case CMD_ENABLE_ALL_NETWORKS: 7128 long time = android.os.SystemClock.elapsedRealtime(); 7129 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7130 mWifiConfigStore.enableAllNetworks(); 7131 mLastEnableAllNetworksTime = time; 7132 } 7133 break; 7134 case WifiManager.DISABLE_NETWORK: 7135 if (mWifiConfigStore.disableNetwork(message.arg1, 7136 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7137 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7138 } else { 7139 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7140 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7141 WifiManager.ERROR); 7142 } 7143 break; 7144 case CMD_DISABLE_EPHEMERAL_NETWORK: 7145 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7146 if (config != null) { 7147 if (config.networkId == mLastNetworkId) { 7148 // Disconnect and let autojoin reselect a new network 7149 sendMessage(CMD_DISCONNECT); 7150 } 7151 } 7152 break; 7153 case CMD_BLACKLIST_NETWORK: 7154 mWifiConfigStore.blackListBssid((String) message.obj); 7155 break; 7156 case CMD_CLEAR_BLACKLIST: 7157 mWifiConfigStore.clearBssidBlacklist(); 7158 break; 7159 case CMD_SAVE_CONFIG: 7160 ok = mWifiConfigStore.saveConfig(); 7161 7162 if (DBG) loge("wifistatemachine did save config " + ok); 7163 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7164 7165 // Inform the backup manager about a data change 7166 IBackupManager ibm = IBackupManager.Stub.asInterface( 7167 ServiceManager.getService(Context.BACKUP_SERVICE)); 7168 if (ibm != null) { 7169 try { 7170 ibm.dataChanged("com.android.providers.settings"); 7171 } catch (Exception e) { 7172 // Try again later 7173 } 7174 } 7175 break; 7176 case CMD_GET_CONFIGURED_NETWORKS: 7177 replyToMessage(message, message.what, 7178 mWifiConfigStore.getConfiguredNetworks()); 7179 break; 7180 case WifiMonitor.SUP_REQUEST_IDENTITY: 7181 int networkId = message.arg2; 7182 boolean identitySent = false; 7183 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7184 7185 if (targetWificonfiguration != null 7186 && targetWificonfiguration.enterpriseConfig != null) { 7187 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7188 } 7189 7190 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7191 if (targetWificonfiguration != null 7192 && targetWificonfiguration.networkId == networkId 7193 && targetWificonfiguration.allowedKeyManagement 7194 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7195 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7196 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7197 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7198 TelephonyManager tm = (TelephonyManager) 7199 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7200 if (tm != null) { 7201 String imsi = tm.getSubscriberId(); 7202 String mccMnc = ""; 7203 7204 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7205 mccMnc = tm.getSimOperator(); 7206 7207 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7208 7209 if (!identity.isEmpty()) { 7210 mWifiNative.simIdentityResponse(networkId, identity); 7211 identitySent = true; 7212 } 7213 } 7214 } 7215 if (!identitySent) { 7216 // Supplicant lacks credentials to connect to that network, hence black list 7217 ssid = (String) message.obj; 7218 if (targetWificonfiguration != null && ssid != null 7219 && targetWificonfiguration.SSID != null 7220 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7221 mWifiConfigStore.handleSSIDStateChange( 7222 targetWificonfiguration.networkId, false, 7223 "AUTH_FAILED no identity", null); 7224 } 7225 // Disconnect now, as we don't have any way to fullfill 7226 // the supplicant request. 7227 mWifiConfigStore.setLastSelectedConfiguration( 7228 WifiConfiguration.INVALID_NETWORK_ID); 7229 mWifiNative.disconnect(); 7230 } 7231 break; 7232 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7233 logd("Received SUP_REQUEST_SIM_AUTH"); 7234 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7235 if (requestData != null) { 7236 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7237 handleGsmAuthRequest(requestData); 7238 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7239 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7240 handle3GAuthRequest(requestData); 7241 } 7242 } else { 7243 loge("Invalid sim auth request"); 7244 } 7245 break; 7246 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7247 replyToMessage(message, message.what, 7248 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7249 break; 7250 case CMD_GET_MATCHING_CONFIG: 7251 replyToMessage(message, message.what, 7252 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7253 break; 7254 /* Do a redundant disconnect without transition */ 7255 case CMD_DISCONNECT: 7256 mWifiConfigStore.setLastSelectedConfiguration 7257 (WifiConfiguration.INVALID_NETWORK_ID); 7258 mWifiNative.disconnect(); 7259 break; 7260 case CMD_RECONNECT: 7261 mWifiAutoJoinController.attemptAutoJoin(); 7262 break; 7263 case CMD_REASSOCIATE: 7264 lastConnectAttempt = System.currentTimeMillis(); 7265 mWifiNative.reassociate(); 7266 break; 7267 case CMD_RELOAD_TLS_AND_RECONNECT: 7268 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7269 logd("Reconnecting to give a chance to un-connected TLS networks"); 7270 mWifiNative.disconnect(); 7271 lastConnectAttempt = System.currentTimeMillis(); 7272 mWifiNative.reconnect(); 7273 } 7274 break; 7275 case CMD_AUTO_ROAM: 7276 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7277 return HANDLED; 7278 case CMD_AUTO_CONNECT: 7279 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7280 * associated status to the STATUS command but somehow-someplace still thinks 7281 * it is associated and thus will ignore select/reconnect command with 7282 * following message: 7283 * "Already associated with the selected network - do nothing" 7284 * 7285 * Hence, sends a disconnect to supplicant first. 7286 */ 7287 didDisconnect = false; 7288 if (getCurrentState() != mDisconnectedState) { 7289 /** Supplicant will ignore the reconnect if we are currently associated, 7290 * hence trigger a disconnect 7291 */ 7292 didDisconnect = true; 7293 mWifiNative.disconnect(); 7294 } 7295 7296 /* connect command coming from auto-join */ 7297 config = (WifiConfiguration) message.obj; 7298 netId = message.arg1; 7299 int roam = message.arg2; 7300 loge("CMD_AUTO_CONNECT sup state " 7301 + mSupplicantStateTracker.getSupplicantStateName() 7302 + " my state " + getCurrentState().getName() 7303 + " nid=" + Integer.toString(netId) 7304 + " roam=" + Integer.toString(roam)); 7305 if (config == null) { 7306 loge("AUTO_CONNECT and no config, bail out..."); 7307 break; 7308 } 7309 7310 /* Make sure we cancel any previous roam request */ 7311 autoRoamSetBSSID(netId, config.BSSID); 7312 7313 /* Save the network config */ 7314 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 7315 + " nid=" + Integer.toString(netId)); 7316 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7317 netId = result.getNetworkId(); 7318 loge("CMD_AUTO_CONNECT did save config -> " 7319 + " nid=" + Integer.toString(netId)); 7320 7321 // Since we updated the config,read it back from config store: 7322 config = mWifiConfigStore.getWifiConfiguration(netId); 7323 if (config == null) { 7324 loge("CMD_AUTO_CONNECT couldnt update the config, got null config"); 7325 break; 7326 } 7327 if (netId != config.networkId) { 7328 loge("CMD_AUTO_CONNECT couldnt update the config, want" 7329 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7330 break; 7331 } 7332 7333 if (deferForUserInput(message, netId, false)) { 7334 break; 7335 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7336 WifiConfiguration.USER_BANNED) { 7337 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7338 WifiManager.NOT_AUTHORIZED); 7339 break; 7340 } 7341 7342 // Make sure the network is enabled, since supplicant will not reenable it 7343 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7344 7345 // If we're autojoining a network that the user or an app explicitly selected, 7346 // keep track of the UID that selected it. 7347 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7348 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7349 7350 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7351 lastConnectUid) && mWifiNative.reconnect()) { 7352 lastConnectAttempt = System.currentTimeMillis(); 7353 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7354 config = mWifiConfigStore.getWifiConfiguration(netId); 7355 if (config != null 7356 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7357 // If we autojoined a different config than the user selected one, 7358 // it means we could not see the last user selection, 7359 // or that the last user selection was faulty and ended up blacklisted 7360 // for some reason (in which case the user is notified with an error 7361 // message in the Wifi picker), and thus we managed to auto-join away 7362 // from the selected config. -> in that case we need to forget 7363 // the selection because we don't want to abruptly switch back to it. 7364 // 7365 // Note that the user selection is also forgotten after a period of time 7366 // during which the device has been disconnected. 7367 // The default value is 30 minutes : see the code path at bottom of 7368 // setScanResults() function. 7369 mWifiConfigStore. 7370 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7371 } 7372 mAutoRoaming = roam; 7373 if (isRoaming() || linkDebouncing) { 7374 transitionTo(mRoamingState); 7375 } else if (didDisconnect) { 7376 transitionTo(mDisconnectingState); 7377 } else { 7378 /* Already in disconnected state, nothing to change */ 7379 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7380 int delay = 60 * 1000; 7381 if (VDBG) { 7382 loge("Starting PNO alarm: " + delay); 7383 } 7384 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7385 System.currentTimeMillis() + delay, 7386 mPnoIntent); 7387 } 7388 mRestartAutoJoinOffloadCounter++; 7389 } 7390 } else { 7391 loge("Failed to connect config: " + config + " netId: " + netId); 7392 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7393 WifiManager.ERROR); 7394 break; 7395 } 7396 break; 7397 case CMD_REMOVE_APP_CONFIGURATIONS: 7398 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7399 break; 7400 case CMD_REMOVE_USER_CONFIGURATIONS: 7401 mWifiConfigStore.removeNetworksForUser(message.arg1); 7402 break; 7403 case WifiManager.CONNECT_NETWORK: 7404 /** 7405 * The connect message can contain a network id passed as arg1 on message or 7406 * or a config passed as obj on message. 7407 * For a new network, a config is passed to create and connect. 7408 * For an existing network, a network id is passed 7409 */ 7410 netId = message.arg1; 7411 config = (WifiConfiguration) message.obj; 7412 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7413 boolean updatedExisting = false; 7414 7415 /* Save the network config */ 7416 if (config != null) { 7417 // When connecting to an access point, WifiStateMachine wants to update the 7418 // relevant config with administrative data. This update should not be 7419 // considered a 'real' update, therefore lockdown by Device Owner must be 7420 // disregarded. 7421 if (!recordUidIfAuthorized(config, message.sendingUid, 7422 /* onlyAnnotate */ true)) { 7423 loge("Not authorized to update network " 7424 + " config=" + config.SSID 7425 + " cnid=" + config.networkId 7426 + " uid=" + message.sendingUid); 7427 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7428 WifiManager.NOT_AUTHORIZED); 7429 break; 7430 } 7431 7432 String configKey = config.configKey(true /* allowCached */); 7433 WifiConfiguration savedConfig = 7434 mWifiConfigStore.getWifiConfiguration(configKey); 7435 if (savedConfig != null) { 7436 // There is an existing config with this netId, but it wasn't exposed 7437 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7438 // getConfiguredNetworks). Remove those bits and update the config. 7439 config = savedConfig; 7440 loge("CONNECT_NETWORK updating existing config with id=" + 7441 config.networkId + " configKey=" + configKey); 7442 config.ephemeral = false; 7443 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7444 updatedExisting = true; 7445 } 7446 7447 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7448 netId = result.getNetworkId(); 7449 } 7450 config = mWifiConfigStore.getWifiConfiguration(netId); 7451 7452 if (config == null) { 7453 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7454 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7455 + getCurrentState().getName()); 7456 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7457 WifiManager.ERROR); 7458 break; 7459 } else { 7460 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7461 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 7462 + " config=" + config.SSID 7463 + " cnid=" + config.networkId 7464 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7465 + " my state " + getCurrentState().getName() 7466 + " uid = " + message.sendingUid 7467 + wasSkipped); 7468 } 7469 7470 autoRoamSetBSSID(netId, "any"); 7471 7472 if (message.sendingUid == Process.WIFI_UID 7473 || message.sendingUid == Process.SYSTEM_UID) { 7474 // As a sanity measure, clear the BSSID in the supplicant network block. 7475 // If system or Wifi Settings want to connect, they will not 7476 // specify the BSSID. 7477 // If an app however had added a BSSID to this configuration, and the BSSID 7478 // was wrong, Then we would forever fail to connect until that BSSID 7479 // is cleaned up. 7480 clearConfigBSSID(config, "CONNECT_NETWORK"); 7481 } 7482 7483 if (deferForUserInput(message, netId, true)) { 7484 break; 7485 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7486 WifiConfiguration.USER_BANNED) { 7487 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7488 WifiManager.NOT_AUTHORIZED); 7489 break; 7490 } 7491 7492 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7493 7494 /* Tell autojoin the user did try to connect to that network if from settings */ 7495 boolean persist = 7496 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7497 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7498 7499 mWifiConfigStore.setLastSelectedConfiguration(netId); 7500 7501 didDisconnect = false; 7502 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7503 && mLastNetworkId != netId) { 7504 /** Supplicant will ignore the reconnect if we are currently associated, 7505 * hence trigger a disconnect 7506 */ 7507 didDisconnect = true; 7508 mWifiNative.disconnect(); 7509 } 7510 7511 // Make sure the network is enabled, since supplicant will not reenable it 7512 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7513 7514 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7515 message.sendingUid) && mWifiNative.reconnect()) { 7516 lastConnectAttempt = System.currentTimeMillis(); 7517 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7518 7519 /* The state tracker handles enabling networks upon completion/failure */ 7520 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7521 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7522 if (didDisconnect) { 7523 /* Expect a disconnection from the old connection */ 7524 transitionTo(mDisconnectingState); 7525 } else if (updatedExisting && getCurrentState() == mConnectedState && 7526 getCurrentWifiConfiguration().networkId == netId) { 7527 // Update the current set of network capabilities, but stay in the 7528 // current state. 7529 updateCapabilities(config); 7530 } else { 7531 /** 7532 * Directly go to disconnected state where we 7533 * process the connection events from supplicant 7534 **/ 7535 transitionTo(mDisconnectedState); 7536 } 7537 } else { 7538 loge("Failed to connect config: " + config + " netId: " + netId); 7539 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7540 WifiManager.ERROR); 7541 break; 7542 } 7543 break; 7544 case WifiManager.SAVE_NETWORK: 7545 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7546 // Fall thru 7547 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7548 lastSavedConfigurationAttempt = null; // Used for debug 7549 config = (WifiConfiguration) message.obj; 7550 if (config == null) { 7551 loge("ERROR: SAVE_NETWORK with null configuration" 7552 + mSupplicantStateTracker.getSupplicantStateName() 7553 + " my state " + getCurrentState().getName()); 7554 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7555 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7556 WifiManager.ERROR); 7557 break; 7558 } 7559 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7560 int nid = config.networkId; 7561 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7562 + " config=" + config.SSID 7563 + " nid=" + config.networkId 7564 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7565 + " my state " + getCurrentState().getName()); 7566 7567 // Only record the uid if this is user initiated 7568 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7569 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7570 /* onlyAnnotate */ false)) { 7571 loge("Not authorized to update network " 7572 + " config=" + config.SSID 7573 + " cnid=" + config.networkId 7574 + " uid=" + message.sendingUid); 7575 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7576 WifiManager.NOT_AUTHORIZED); 7577 break; 7578 } 7579 7580 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7581 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7582 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7583 if (result.hasIpChanged()) { 7584 // The currently connection configuration was changed 7585 // We switched from DHCP to static or from static to DHCP, or the 7586 // static IP address has changed. 7587 log("Reconfiguring IP on connection"); 7588 // TODO: clear addresses and disable IPv6 7589 // to simplify obtainingIpState. 7590 transitionTo(mObtainingIpState); 7591 } 7592 if (result.hasProxyChanged()) { 7593 log("Reconfiguring proxy on connection"); 7594 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7595 } 7596 } 7597 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7598 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7599 7600 if (VDBG) { 7601 loge("Success save network nid=" 7602 + Integer.toString(result.getNetworkId())); 7603 } 7604 7605 synchronized(mScanResultCache) { 7606 /** 7607 * If the command comes from WifiManager, then 7608 * tell autojoin the user did try to modify and save that network, 7609 * and interpret the SAVE_NETWORK as a request to connect 7610 */ 7611 boolean user = message.what == WifiManager.SAVE_NETWORK; 7612 7613 // Did this connect come from settings 7614 boolean persistConnect = 7615 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7616 7617 if (user) { 7618 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7619 mWifiConfigStore.writeKnownNetworkHistory(false); 7620 } 7621 7622 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7623 , user, persistConnect); 7624 mWifiAutoJoinController.attemptAutoJoin(); 7625 } 7626 } else { 7627 loge("Failed to save network"); 7628 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7629 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7630 WifiManager.ERROR); 7631 } 7632 break; 7633 case WifiManager.FORGET_NETWORK: 7634 // Debug only, remember last configuration that was forgotten 7635 WifiConfiguration toRemove 7636 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7637 if (toRemove == null) { 7638 lastForgetConfigurationAttempt = null; 7639 } else { 7640 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7641 } 7642 // check that the caller owns this network 7643 netId = message.arg1; 7644 7645 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7646 /* onlyAnnotate */ false)) { 7647 loge("Not authorized to forget network " 7648 + " cnid=" + netId 7649 + " uid=" + message.sendingUid); 7650 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7651 WifiManager.NOT_AUTHORIZED); 7652 break; 7653 } 7654 7655 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7656 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7657 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7658 (WifiConfiguration) message.obj); 7659 } else { 7660 loge("Failed to forget network"); 7661 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7662 WifiManager.ERROR); 7663 } 7664 break; 7665 case WifiManager.START_WPS: 7666 WpsInfo wpsInfo = (WpsInfo) message.obj; 7667 WpsResult wpsResult; 7668 switch (wpsInfo.setup) { 7669 case WpsInfo.PBC: 7670 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7671 break; 7672 case WpsInfo.KEYPAD: 7673 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7674 break; 7675 case WpsInfo.DISPLAY: 7676 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7677 break; 7678 default: 7679 wpsResult = new WpsResult(Status.FAILURE); 7680 loge("Invalid setup for WPS"); 7681 break; 7682 } 7683 mWifiConfigStore.setLastSelectedConfiguration 7684 (WifiConfiguration.INVALID_NETWORK_ID); 7685 if (wpsResult.status == Status.SUCCESS) { 7686 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7687 transitionTo(mWpsRunningState); 7688 } else { 7689 loge("Failed to start WPS with config " + wpsInfo.toString()); 7690 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7691 } 7692 break; 7693 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7694 if (DBG) log("Network connection established"); 7695 mLastNetworkId = message.arg1; 7696 mLastBssid = (String) message.obj; 7697 7698 mWifiInfo.setBSSID(mLastBssid); 7699 mWifiInfo.setNetworkId(mLastNetworkId); 7700 7701 sendNetworkStateChangeBroadcast(mLastBssid); 7702 transitionTo(mObtainingIpState); 7703 break; 7704 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7705 // Calling handleNetworkDisconnect here is redundant because we might already 7706 // have called it when leaving L2ConnectedState to go to disconnecting state 7707 // or thru other path 7708 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7709 // if they are valid, and only in this case call handleNEtworkDisconnect, 7710 // TODO: this should be fixed for a L MR release 7711 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7712 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7713 // at the chip etc... 7714 if (DBG) log("ConnectModeState: Network connection lost "); 7715 handleNetworkDisconnect(); 7716 transitionTo(mDisconnectedState); 7717 break; 7718 case CMD_PNO_NETWORK_FOUND: 7719 processPnoNetworkFound((ScanResult[])message.obj); 7720 break; 7721 default: 7722 return NOT_HANDLED; 7723 } 7724 return HANDLED; 7725 } 7726 } 7727 7728 private void updateCapabilities(WifiConfiguration config) { 7729 if (config.ephemeral) { 7730 mNetworkCapabilities.removeCapability( 7731 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7732 } else { 7733 mNetworkCapabilities.addCapability( 7734 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7735 } 7736 mNetworkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7737 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7738 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7739 } 7740 7741 private class WifiNetworkAgent extends NetworkAgent { 7742 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7743 NetworkCapabilities nc, LinkProperties lp, int score) { 7744 super(l, c, TAG, ni, nc, lp, score); 7745 } 7746 protected void unwanted() { 7747 // Ignore if we're not the current networkAgent. 7748 if (this != mNetworkAgent) return; 7749 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7750 + Integer.toString(mWifiInfo.score)); 7751 unwantedNetwork(network_status_unwanted_disconnect); 7752 } 7753 7754 @Override 7755 protected void networkStatus(int status) { 7756 if (this != mNetworkAgent) return; 7757 if (status == NetworkAgent.INVALID_NETWORK) { 7758 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7759 + Integer.toString(mWifiInfo.score)); 7760 unwantedNetwork(network_status_unwanted_disable_autojoin); 7761 } else if (status == NetworkAgent.VALID_NETWORK) { 7762 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7763 + Integer.toString(mWifiInfo.score)); 7764 doNetworkStatus(status); 7765 } 7766 } 7767 7768 @Override 7769 protected void saveAcceptUnvalidated(boolean accept) { 7770 if (this != mNetworkAgent) return; 7771 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7772 } 7773 7774 @Override 7775 protected void setSignalStrengthThresholds(int[] thresholds) { 7776 // TODO: Implement. 7777 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 7778 // MAX_VALUE at the start/end of the thresholds array if necessary. 7779 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 7780 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 7781 // re-arm the hardware event. This needs to be done on the state machine thread to 7782 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 7783 // sent in the NetworkCapabilities) must be the one received from the hardware event 7784 // received, or we might skip callbacks. 7785 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 7786 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 7787 } 7788 } 7789 7790 void unwantedNetwork(int reason) { 7791 sendMessage(CMD_UNWANTED_NETWORK, reason); 7792 } 7793 7794 void doNetworkStatus(int status) { 7795 sendMessage(CMD_NETWORK_STATUS, status); 7796 } 7797 7798 // rfc4186 & rfc4187: 7799 // create Permanent Identity base on IMSI, 7800 // identity = usernam@realm 7801 // with username = prefix | IMSI 7802 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7803 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7804 String mcc; 7805 String mnc; 7806 String prefix; 7807 7808 if (imsi == null || imsi.isEmpty()) 7809 return ""; 7810 7811 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7812 prefix = "1"; 7813 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7814 prefix = "0"; 7815 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7816 prefix = "6"; 7817 else // not a valide EapMethod 7818 return ""; 7819 7820 /* extract mcc & mnc from mccMnc */ 7821 if (mccMnc != null && !mccMnc.isEmpty()) { 7822 mcc = mccMnc.substring(0, 3); 7823 mnc = mccMnc.substring(3); 7824 if (mnc.length() == 2) 7825 mnc = "0" + mnc; 7826 } else { 7827 // extract mcc & mnc from IMSI, assume mnc size is 3 7828 mcc = imsi.substring(0, 3); 7829 mnc = imsi.substring(3, 6); 7830 } 7831 7832 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7833 } 7834 7835 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7836 if (config == null) 7837 return false; 7838 7839 // We are still seeing a fairly high power consumption triggered by autojoin scans 7840 // Hence do partial scans only for PSK configuration that are roamable since the 7841 // primary purpose of the partial scans is roaming. 7842 // Full badn scans with exponential backoff for the purpose or extended roaming and 7843 // network switching are performed unconditionally. 7844 ScanDetailCache scanDetailCache = 7845 mWifiConfigStore.getScanDetailCache(config); 7846 if (scanDetailCache == null 7847 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7848 || scanDetailCache.size() > 6) { 7849 //return true but to not trigger the scan 7850 return true; 7851 } 7852 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7853 ONE_HOUR_MILLI, restrictChannelList); 7854 if (channels != null && channels.size() != 0) { 7855 StringBuilder freqs = new StringBuilder(); 7856 boolean first = true; 7857 for (Integer channel : channels) { 7858 if (!first) 7859 freqs.append(","); 7860 freqs.append(channel.toString()); 7861 first = false; 7862 } 7863 //if (DBG) { 7864 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7865 //} 7866 // Call wifi native to start the scan 7867 if (startScanNative( 7868 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7869 freqs.toString())) { 7870 // Only count battery consumption if scan request is accepted 7871 noteScanStart(SCAN_ALARM_SOURCE, null); 7872 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7873 } else { 7874 // used for debug only, mark scan as failed 7875 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7876 } 7877 return true; 7878 } else { 7879 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7880 return false; 7881 } 7882 } 7883 7884 void clearCurrentConfigBSSID(String dbg) { 7885 // Clear the bssid in the current config's network block 7886 WifiConfiguration config = getCurrentWifiConfiguration(); 7887 if (config == null) 7888 return; 7889 clearConfigBSSID(config, dbg); 7890 } 7891 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7892 if (config == null) 7893 return; 7894 if (DBG) { 7895 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7896 + " config.bssid " + config.BSSID); 7897 } 7898 config.autoJoinBSSID = "any"; 7899 config.BSSID = "any"; 7900 if (DBG) { 7901 loge(dbg + " " + config.SSID 7902 + " nid=" + Integer.toString(config.networkId)); 7903 } 7904 mWifiConfigStore.saveWifiConfigBSSID(config); 7905 } 7906 7907 class L2ConnectedState extends State { 7908 @Override 7909 public void enter() { 7910 mRssiPollToken++; 7911 if (mEnableRssiPolling) { 7912 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7913 } 7914 if (mNetworkAgent != null) { 7915 loge("Have NetworkAgent when entering L2Connected"); 7916 setNetworkDetailedState(DetailedState.DISCONNECTED); 7917 } 7918 setNetworkDetailedState(DetailedState.CONNECTING); 7919 7920 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 7921 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7922 } 7923 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7924 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7925 mLinkProperties, 60); 7926 7927 // We must clear the config BSSID, as the wifi chipset may decide to roam 7928 // from this point on and having the BSSID specified in the network block would 7929 // cause the roam to faile and the device to disconnect 7930 clearCurrentConfigBSSID("L2ConnectedState"); 7931 7932 try { 7933 mIpReachabilityMonitor = new IpReachabilityMonitor( 7934 mInterfaceName, 7935 new IpReachabilityMonitor.Callback() { 7936 @Override 7937 public void notifyLost(InetAddress ip, String logMsg) { 7938 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 7939 } 7940 }); 7941 } catch (IllegalArgumentException e) { 7942 Log.wtf("Failed to create IpReachabilityMonitor", e); 7943 } 7944 } 7945 7946 @Override 7947 public void exit() { 7948 if (mIpReachabilityMonitor != null) { 7949 mIpReachabilityMonitor.stop(); 7950 mIpReachabilityMonitor = null; 7951 } 7952 7953 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7954 // Bug: 15347363 7955 // For paranoia's sake, call handleNetworkDisconnect 7956 // only if BSSID is null or last networkId 7957 // is not invalid. 7958 if (DBG) { 7959 StringBuilder sb = new StringBuilder(); 7960 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7961 if (mLastBssid !=null) { 7962 sb.append(" ").append(mLastBssid); 7963 } 7964 } 7965 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7966 handleNetworkDisconnect(); 7967 } 7968 } 7969 7970 @Override 7971 public boolean processMessage(Message message) { 7972 logStateAndMessage(message, getClass().getSimpleName()); 7973 7974 switch (message.what) { 7975 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7976 handlePreDhcpSetup(); 7977 break; 7978 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7979 handlePostDhcpSetup(); 7980 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7981 if (DBG) log("WifiStateMachine DHCP successful"); 7982 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7983 // We advance to mConnectedState because handleIPv4Success will call 7984 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7985 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7986 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 7987 if (DBG) { 7988 int count = -1; 7989 WifiConfiguration config = getCurrentWifiConfiguration(); 7990 if (config != null) { 7991 count = config.numConnectionFailures; 7992 } 7993 log("WifiStateMachine DHCP failure count=" + count); 7994 } 7995 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7996 // As above, we transition to mDisconnectingState via updateLinkProperties. 7997 } 7998 break; 7999 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8000 handleSuccessfulIpConfiguration(); 8001 sendConnectedState(); 8002 transitionTo(mConnectedState); 8003 break; 8004 case CMD_IP_CONFIGURATION_LOST: 8005 // Get Link layer stats so that we get fresh tx packet counters. 8006 getWifiLinkLayerStats(true); 8007 handleIpConfigurationLost(); 8008 transitionTo(mDisconnectingState); 8009 break; 8010 case CMD_IP_REACHABILITY_LOST: 8011 if (DBG && message.obj != null) log((String) message.obj); 8012 handleIpReachabilityLost(); 8013 transitionTo(mDisconnectingState); 8014 break; 8015 case CMD_DISCONNECT: 8016 mWifiNative.disconnect(); 8017 transitionTo(mDisconnectingState); 8018 break; 8019 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8020 if (message.arg1 == 1) { 8021 mWifiNative.disconnect(); 8022 mTemporarilyDisconnectWifi = true; 8023 transitionTo(mDisconnectingState); 8024 } 8025 break; 8026 case CMD_SET_OPERATIONAL_MODE: 8027 if (message.arg1 != CONNECT_MODE) { 8028 sendMessage(CMD_DISCONNECT); 8029 deferMessage(message); 8030 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8031 noteWifiDisabledWhileAssociated(); 8032 } 8033 } 8034 mWifiConfigStore. 8035 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8036 break; 8037 case CMD_SET_COUNTRY_CODE: 8038 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8039 deferMessage(message); 8040 break; 8041 case CMD_START_SCAN: 8042 //if (DBG) { 8043 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 8044 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8045 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8046 + " targetRoamBSSID=" + mTargetRoamBSSID 8047 + " RSSI=" + mWifiInfo.getRssi()); 8048 //} 8049 if (message.arg1 == SCAN_ALARM_SOURCE) { 8050 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8051 // not be processed) and restart the scan if needed 8052 boolean shouldScan = 8053 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 8054 if (!checkAndRestartDelayedScan(message.arg2, 8055 shouldScan, 8056 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8057 null, null)) { 8058 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8059 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 8060 + message.arg1 8061 + " " + message.arg2 + ", " + mDelayedScanCounter 8062 + " -> obsolete"); 8063 return HANDLED; 8064 } 8065 if (mP2pConnected.get()) { 8066 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 8067 + message.arg1 8068 + " " + message.arg2 + ", " + mDelayedScanCounter 8069 + " ignore because P2P is connected"); 8070 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8071 return HANDLED; 8072 } 8073 boolean tryFullBandScan = false; 8074 boolean restrictChannelList = false; 8075 long now_ms = System.currentTimeMillis(); 8076 if (DBG) { 8077 loge("WifiStateMachine CMD_START_SCAN with age=" 8078 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8079 + " interval=" + fullBandConnectedTimeIntervalMilli 8080 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8081 } 8082 if (mWifiInfo != null) { 8083 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8084 (now_ms - lastFullBandConnectedTimeMilli) 8085 > fullBandConnectedTimeIntervalMilli) { 8086 if (DBG) { 8087 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 8088 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8089 + " interval=" + fullBandConnectedTimeIntervalMilli 8090 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8091 } 8092 tryFullBandScan = true; 8093 } 8094 8095 if (mWifiInfo.txSuccessRate > 8096 mWifiConfigStore.maxTxPacketForFullScans 8097 || mWifiInfo.rxSuccessRate > 8098 mWifiConfigStore.maxRxPacketForFullScans) { 8099 // Too much traffic at the interface, hence no full band scan 8100 if (DBG) { 8101 loge("WifiStateMachine CMD_START_SCAN " + 8102 "prevent full band scan due to pkt rate"); 8103 } 8104 tryFullBandScan = false; 8105 } 8106 8107 if (mWifiInfo.txSuccessRate > 8108 mWifiConfigStore.maxTxPacketForPartialScans 8109 || mWifiInfo.rxSuccessRate > 8110 mWifiConfigStore.maxRxPacketForPartialScans) { 8111 // Don't scan if lots of packets are being sent 8112 restrictChannelList = true; 8113 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8114 if (DBG) { 8115 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 8116 + " ...and ignore scans" 8117 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8118 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8119 } 8120 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8121 return HANDLED; 8122 } 8123 } 8124 } 8125 8126 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8127 if (DBG) { 8128 loge("WifiStateMachine CMD_START_SCAN full=" + 8129 tryFullBandScan); 8130 } 8131 if (currentConfiguration != null) { 8132 if (fullBandConnectedTimeIntervalMilli 8133 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8134 // Sanity 8135 fullBandConnectedTimeIntervalMilli 8136 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8137 } 8138 if (tryFullBandScan) { 8139 lastFullBandConnectedTimeMilli = now_ms; 8140 if (fullBandConnectedTimeIntervalMilli 8141 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8142 // Increase the interval 8143 fullBandConnectedTimeIntervalMilli 8144 = fullBandConnectedTimeIntervalMilli 8145 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8146 8147 if (DBG) { 8148 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8149 + fullBandConnectedTimeIntervalMilli); 8150 } 8151 } 8152 handleScanRequest( 8153 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8154 } else { 8155 if (!startScanForConfiguration( 8156 currentConfiguration, restrictChannelList)) { 8157 if (DBG) { 8158 loge("WifiStateMachine starting scan, " + 8159 " did not find channels -> full"); 8160 } 8161 lastFullBandConnectedTimeMilli = now_ms; 8162 if (fullBandConnectedTimeIntervalMilli 8163 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8164 // Increase the interval 8165 fullBandConnectedTimeIntervalMilli 8166 = fullBandConnectedTimeIntervalMilli 8167 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8168 8169 if (DBG) { 8170 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8171 + fullBandConnectedTimeIntervalMilli); 8172 } 8173 } 8174 handleScanRequest( 8175 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8176 } 8177 } 8178 8179 } else { 8180 loge("CMD_START_SCAN : connected mode and no configuration"); 8181 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8182 } 8183 } else { 8184 // Not scan alarm source 8185 return NOT_HANDLED; 8186 } 8187 break; 8188 /* Ignore connection to same network */ 8189 case WifiManager.CONNECT_NETWORK: 8190 int netId = message.arg1; 8191 if (mWifiInfo.getNetworkId() == netId) { 8192 break; 8193 } 8194 return NOT_HANDLED; 8195 /* Ignore */ 8196 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8197 break; 8198 case CMD_RSSI_POLL: 8199 if (message.arg1 == mRssiPollToken) { 8200 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8201 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8202 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8203 if (stats != null) { 8204 // Sanity check the results provided by driver 8205 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8206 && (stats.rssi_mgmt == 0 8207 || stats.beacon_rx == 0)) { 8208 stats = null; 8209 } 8210 } 8211 // Get Info and continue polling 8212 fetchRssiLinkSpeedAndFrequencyNative(); 8213 calculateWifiScore(stats); 8214 } 8215 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8216 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8217 8218 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8219 } else { 8220 // Polling has completed 8221 } 8222 break; 8223 case CMD_ENABLE_RSSI_POLL: 8224 cleanWifiScore(); 8225 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8226 mEnableRssiPolling = (message.arg1 == 1); 8227 } else { 8228 mEnableRssiPolling = false; 8229 } 8230 mRssiPollToken++; 8231 if (mEnableRssiPolling) { 8232 // First poll 8233 fetchRssiLinkSpeedAndFrequencyNative(); 8234 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8235 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8236 } 8237 break; 8238 case WifiManager.RSSI_PKTCNT_FETCH: 8239 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8240 fetchRssiLinkSpeedAndFrequencyNative(); 8241 info.rssi = mWifiInfo.getRssi(); 8242 fetchPktcntNative(info); 8243 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8244 break; 8245 case CMD_DELAYED_NETWORK_DISCONNECT: 8246 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8247 8248 // Ignore if we are not debouncing 8249 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8250 + message.arg1); 8251 return HANDLED; 8252 } else { 8253 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8254 + message.arg1); 8255 8256 linkDebouncing = false; 8257 // If we are still debouncing while this message comes, 8258 // it means we were not able to reconnect within the alloted time 8259 // = LINK_FLAPPING_DEBOUNCE_MSEC 8260 // and thus, trigger a real disconnect 8261 handleNetworkDisconnect(); 8262 transitionTo(mDisconnectedState); 8263 } 8264 break; 8265 case CMD_ASSOCIATED_BSSID: 8266 if ((String) message.obj == null) { 8267 loge("Associated command w/o BSSID"); 8268 break; 8269 } 8270 mLastBssid = (String) message.obj; 8271 if (mLastBssid != null 8272 && (mWifiInfo.getBSSID() == null 8273 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8274 mWifiInfo.setBSSID((String) message.obj); 8275 sendNetworkStateChangeBroadcast(mLastBssid); 8276 } 8277 break; 8278 default: 8279 return NOT_HANDLED; 8280 } 8281 8282 return HANDLED; 8283 } 8284 } 8285 8286 class ObtainingIpState extends State { 8287 @Override 8288 public void enter() { 8289 if (DBG) { 8290 String key = ""; 8291 if (getCurrentWifiConfiguration() != null) { 8292 key = getCurrentWifiConfiguration().configKey(); 8293 } 8294 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8295 + " " + key + " " 8296 + " roam=" + mAutoRoaming 8297 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8298 + " watchdog= " + obtainingIpWatchdogCount); 8299 } 8300 8301 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8302 // We might still be roaming 8303 linkDebouncing = false; 8304 8305 // Send event to CM & network change broadcast 8306 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8307 8308 // We must clear the config BSSID, as the wifi chipset may decide to roam 8309 // from this point on and having the BSSID specified in the network block would 8310 // cause the roam to faile and the device to disconnect 8311 clearCurrentConfigBSSID("ObtainingIpAddress"); 8312 8313 try { 8314 mNwService.enableIpv6(mInterfaceName); 8315 } catch (RemoteException re) { 8316 loge("Failed to enable IPv6: " + re); 8317 } catch (IllegalStateException e) { 8318 loge("Failed to enable IPv6: " + e); 8319 } 8320 8321 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8322 if (isRoaming()) { 8323 renewDhcp(); 8324 } else { 8325 // Remove any IP address on the interface in case we're switching from static 8326 // IP configuration to DHCP. This is safe because if we get here when not 8327 // roaming, we don't have a usable address. 8328 clearIPv4Address(mInterfaceName); 8329 startDhcp(); 8330 } 8331 obtainingIpWatchdogCount++; 8332 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8333 // Get Link layer stats so as we get fresh tx packet counters 8334 getWifiLinkLayerStats(true); 8335 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8336 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8337 } else { 8338 // stop any running dhcp before assigning static IP 8339 stopDhcp(); 8340 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8341 mLastNetworkId); 8342 if (config.ipAddress == null) { 8343 loge("Static IP lacks address"); 8344 sendMessage(CMD_STATIC_IP_FAILURE); 8345 } else { 8346 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8347 ifcg.setLinkAddress(config.ipAddress); 8348 ifcg.setInterfaceUp(); 8349 try { 8350 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8351 if (DBG) log("Static IP configuration succeeded"); 8352 DhcpResults dhcpResults = new DhcpResults(config); 8353 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8354 } catch (RemoteException re) { 8355 loge("Static IP configuration failed: " + re); 8356 sendMessage(CMD_STATIC_IP_FAILURE); 8357 } catch (IllegalStateException e) { 8358 loge("Static IP configuration failed: " + e); 8359 sendMessage(CMD_STATIC_IP_FAILURE); 8360 } 8361 } 8362 } 8363 } 8364 @Override 8365 public boolean processMessage(Message message) { 8366 logStateAndMessage(message, getClass().getSimpleName()); 8367 8368 switch(message.what) { 8369 case CMD_STATIC_IP_SUCCESS: 8370 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8371 break; 8372 case CMD_STATIC_IP_FAILURE: 8373 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8374 break; 8375 case CMD_AUTO_CONNECT: 8376 case CMD_AUTO_ROAM: 8377 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8378 break; 8379 case WifiManager.SAVE_NETWORK: 8380 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8381 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8382 deferMessage(message); 8383 break; 8384 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8385 case CMD_SET_HIGH_PERF_MODE: 8386 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8387 deferMessage(message); 8388 break; 8389 /* Defer scan request since we should not switch to other channels at DHCP */ 8390 case CMD_START_SCAN: 8391 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8392 deferMessage(message); 8393 break; 8394 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8395 if (message.arg1 == obtainingIpWatchdogCount) { 8396 loge("ObtainingIpAddress: Watchdog Triggered, count=" 8397 + obtainingIpWatchdogCount); 8398 handleIpConfigurationLost(); 8399 transitionTo(mDisconnectingState); 8400 break; 8401 } 8402 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8403 break; 8404 default: 8405 return NOT_HANDLED; 8406 } 8407 return HANDLED; 8408 } 8409 } 8410 8411 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8412 // sets mPoorNetworkDetectionEnabled to false. 8413 class VerifyingLinkState extends State { 8414 @Override 8415 public void enter() { 8416 log(getName() + " enter"); 8417 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8418 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8419 sendNetworkStateChangeBroadcast(mLastBssid); 8420 // End roaming 8421 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8422 } 8423 @Override 8424 public boolean processMessage(Message message) { 8425 logStateAndMessage(message, getClass().getSimpleName()); 8426 8427 switch (message.what) { 8428 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8429 // Stay here 8430 log(getName() + " POOR_LINK_DETECTED: no transition"); 8431 break; 8432 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8433 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8434 sendConnectedState(); 8435 transitionTo(mConnectedState); 8436 break; 8437 default: 8438 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8439 return NOT_HANDLED; 8440 } 8441 return HANDLED; 8442 } 8443 } 8444 8445 private void sendConnectedState() { 8446 // If this network was explicitly selected by the user, evaluate whether to call 8447 // explicitlySelected() so the system can treat it appropriately. 8448 WifiConfiguration config = getCurrentWifiConfiguration(); 8449 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8450 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8451 if (DBG) { 8452 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8453 } 8454 if (prompt) { 8455 // Selected by the user via Settings or QuickSettings. If this network has Internet 8456 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8457 // really want to switch, or has already confirmed and selected "Don't ask again". 8458 if (DBG) { 8459 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8460 } 8461 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8462 } 8463 } 8464 8465 setNetworkDetailedState(DetailedState.CONNECTED); 8466 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8467 sendNetworkStateChangeBroadcast(mLastBssid); 8468 } 8469 8470 class RoamingState extends State { 8471 boolean mAssociated; 8472 @Override 8473 public void enter() { 8474 if (DBG) { 8475 log("RoamingState Enter" 8476 + " mScreenOn=" + mScreenOn ); 8477 } 8478 setScanAlarm(false); 8479 8480 // Make sure we disconnect if roaming fails 8481 roamWatchdogCount++; 8482 loge("Start Roam Watchdog " + roamWatchdogCount); 8483 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8484 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8485 mAssociated = false; 8486 } 8487 @Override 8488 public boolean processMessage(Message message) { 8489 logStateAndMessage(message, getClass().getSimpleName()); 8490 WifiConfiguration config; 8491 switch (message.what) { 8492 case CMD_IP_CONFIGURATION_LOST: 8493 config = getCurrentWifiConfiguration(); 8494 if (config != null) { 8495 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8496 mWifiConfigStore.noteRoamingFailure(config, 8497 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8498 } 8499 return NOT_HANDLED; 8500 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8501 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8502 return HANDLED; 8503 case CMD_UNWANTED_NETWORK: 8504 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8505 return HANDLED; 8506 case CMD_SET_OPERATIONAL_MODE: 8507 if (message.arg1 != CONNECT_MODE) { 8508 deferMessage(message); 8509 } 8510 break; 8511 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8512 /** 8513 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8514 * before NETWORK_DISCONNECTION_EVENT 8515 * And there is an associated BSSID corresponding to our target BSSID, then 8516 * we have missed the network disconnection, transition to mDisconnectedState 8517 * and handle the rest of the events there. 8518 */ 8519 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8520 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8521 || stateChangeResult.state == SupplicantState.INACTIVE 8522 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8523 if (DBG) { 8524 log("STATE_CHANGE_EVENT in roaming state " 8525 + stateChangeResult.toString() ); 8526 } 8527 if (stateChangeResult.BSSID != null 8528 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8529 handleNetworkDisconnect(); 8530 transitionTo(mDisconnectedState); 8531 } 8532 } 8533 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8534 // We completed the layer2 roaming part 8535 mAssociated = true; 8536 if (stateChangeResult.BSSID != null) { 8537 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8538 } 8539 } 8540 break; 8541 case CMD_ROAM_WATCHDOG_TIMER: 8542 if (roamWatchdogCount == message.arg1) { 8543 if (DBG) log("roaming watchdog! -> disconnect"); 8544 mRoamFailCount++; 8545 handleNetworkDisconnect(); 8546 mWifiNative.disconnect(); 8547 transitionTo(mDisconnectedState); 8548 } 8549 break; 8550 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8551 if (mAssociated) { 8552 if (DBG) log("roaming and Network connection established"); 8553 mLastNetworkId = message.arg1; 8554 mLastBssid = (String) message.obj; 8555 mWifiInfo.setBSSID(mLastBssid); 8556 mWifiInfo.setNetworkId(mLastNetworkId); 8557 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8558 sendNetworkStateChangeBroadcast(mLastBssid); 8559 transitionTo(mObtainingIpState); 8560 } else { 8561 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8562 } 8563 break; 8564 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8565 // Throw away but only if it corresponds to the network we're roaming to 8566 String bssid = (String)message.obj; 8567 if (true) { 8568 String target = ""; 8569 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8570 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8571 + " BSSID=" + bssid 8572 + " target=" + target); 8573 } 8574 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8575 handleNetworkDisconnect(); 8576 transitionTo(mDisconnectedState); 8577 } 8578 break; 8579 case WifiMonitor.SSID_TEMP_DISABLED: 8580 // Auth error while roaming 8581 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8582 + " id=" + Integer.toString(message.arg1) 8583 + " isRoaming=" + isRoaming() 8584 + " roam=" + Integer.toString(mAutoRoaming)); 8585 if (message.arg1 == mLastNetworkId) { 8586 config = getCurrentWifiConfiguration(); 8587 if (config != null) { 8588 mWifiLogger.captureBugReportData( 8589 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8590 mWifiConfigStore.noteRoamingFailure(config, 8591 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8592 } 8593 handleNetworkDisconnect(); 8594 transitionTo(mDisconnectingState); 8595 } 8596 return NOT_HANDLED; 8597 case CMD_START_SCAN: 8598 deferMessage(message); 8599 break; 8600 default: 8601 return NOT_HANDLED; 8602 } 8603 return HANDLED; 8604 } 8605 8606 @Override 8607 public void exit() { 8608 loge("WifiStateMachine: Leaving Roaming state"); 8609 } 8610 } 8611 8612 class ConnectedState extends State { 8613 @Override 8614 public void enter() { 8615 String address; 8616 updateDefaultRouteMacAddress(1000); 8617 if (DBG) { 8618 log("Enter ConnectedState " 8619 + " mScreenOn=" + mScreenOn 8620 + " scanperiod=" 8621 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8622 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8623 + mWifiConfigStore.enableHalBasedPno.get() 8624 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8625 } 8626 if (mScreenOn 8627 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8628 if (useHalBasedAutoJoinOffload()) { 8629 startGScanConnectedModeOffload("connectedEnter"); 8630 } else { 8631 // restart scan alarm 8632 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8633 null, null); 8634 } 8635 } 8636 registerConnected(); 8637 lastConnectAttempt = 0; 8638 targetWificonfiguration = null; 8639 // Paranoia 8640 linkDebouncing = false; 8641 8642 // Not roaming anymore 8643 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8644 8645 if (testNetworkDisconnect) { 8646 testNetworkDisconnectCounter++; 8647 loge("ConnectedState Enter start disconnect test " + 8648 testNetworkDisconnectCounter); 8649 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8650 testNetworkDisconnectCounter, 0), 15000); 8651 } 8652 8653 // Reenable all networks, allow for hidden networks to be scanned 8654 mWifiConfigStore.enableAllNetworks(); 8655 8656 mLastDriverRoamAttempt = 0; 8657 8658 //startLazyRoam(); 8659 } 8660 @Override 8661 public boolean processMessage(Message message) { 8662 WifiConfiguration config = null; 8663 logStateAndMessage(message, getClass().getSimpleName()); 8664 8665 switch (message.what) { 8666 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8667 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8668 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8669 return HANDLED; 8670 } 8671 /* If we are still in Disconnected state after having discovered a valid 8672 * network this means autojoin didnt managed to associate to the network, 8673 * then restart PNO so as we will try associating to it again. 8674 */ 8675 if (useHalBasedAutoJoinOffload()) { 8676 if (mGScanStartTimeMilli == 0) { 8677 // If offload is not started, then start it... 8678 startGScanConnectedModeOffload("connectedRestart"); 8679 } else { 8680 // If offload is already started, then check if we need to increase 8681 // the scan period and restart the Gscan 8682 long now = System.currentTimeMillis(); 8683 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8684 && ((now - mGScanStartTimeMilli) 8685 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8686 && (mGScanPeriodMilli 8687 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8688 { 8689 startConnectedGScan("Connected restart gscan"); 8690 } 8691 } 8692 } 8693 break; 8694 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8695 updateAssociatedScanPermission(); 8696 break; 8697 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8698 if (DBG) log("Watchdog reports poor link"); 8699 transitionTo(mVerifyingLinkState); 8700 break; 8701 case CMD_UNWANTED_NETWORK: 8702 if (message.arg1 == network_status_unwanted_disconnect) { 8703 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8704 mWifiNative.disconnect(); 8705 transitionTo(mDisconnectingState); 8706 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8707 config = getCurrentWifiConfiguration(); 8708 if (config != null) { 8709 // Disable autojoin 8710 config.numNoInternetAccessReports += 1; 8711 config.dirty = true; 8712 mWifiConfigStore.writeKnownNetworkHistory(false); 8713 } 8714 } 8715 return HANDLED; 8716 case CMD_NETWORK_STATUS: 8717 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8718 config = getCurrentWifiConfiguration(); 8719 if (config != null) { 8720 if (!config.validatedInternetAccess 8721 || config.numNoInternetAccessReports != 0) { 8722 config.dirty = true; 8723 } 8724 // re-enable autojoin 8725 config.numNoInternetAccessReports = 0; 8726 config.validatedInternetAccess = true; 8727 mWifiConfigStore.writeKnownNetworkHistory(false); 8728 } 8729 } 8730 return HANDLED; 8731 case CMD_ACCEPT_UNVALIDATED: 8732 boolean accept = (message.arg1 != 0); 8733 config = getCurrentWifiConfiguration(); 8734 if (config != null) { 8735 config.noInternetAccessExpected = accept; 8736 } 8737 return HANDLED; 8738 case CMD_TEST_NETWORK_DISCONNECT: 8739 // Force a disconnect 8740 if (message.arg1 == testNetworkDisconnectCounter) { 8741 mWifiNative.disconnect(); 8742 } 8743 break; 8744 case CMD_ASSOCIATED_BSSID: 8745 // ASSOCIATING to a new BSSID while already connected, indicates 8746 // that driver is roaming 8747 mLastDriverRoamAttempt = System.currentTimeMillis(); 8748 String toBSSID = (String)message.obj; 8749 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8750 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8751 } 8752 return NOT_HANDLED; 8753 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8754 long lastRoam = 0; 8755 if (mLastDriverRoamAttempt != 0) { 8756 // Calculate time since last driver roam attempt 8757 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8758 mLastDriverRoamAttempt = 0; 8759 } 8760 if (unexpectedDisconnectedReason(message.arg2)) { 8761 mWifiLogger.captureBugReportData( 8762 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8763 } 8764 config = getCurrentWifiConfiguration(); 8765 if (mScreenOn 8766 && !linkDebouncing 8767 && config != null 8768 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8769 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8770 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8771 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8772 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8773 && mWifiInfo.getRssi() > 8774 WifiConfiguration.BAD_RSSI_24) 8775 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8776 && mWifiInfo.getRssi() > 8777 WifiConfiguration.BAD_RSSI_5))) { 8778 // Start de-bouncing the L2 disconnection: 8779 // this L2 disconnection might be spurious. 8780 // Hence we allow 7 seconds for the state machine to try 8781 // to reconnect, go thru the 8782 // roaming cycle and enter Obtaining IP address 8783 // before signalling the disconnect to ConnectivityService and L3 8784 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8785 linkDebouncing = true; 8786 8787 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8788 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8789 if (DBG) { 8790 log("NETWORK_DISCONNECTION_EVENT in connected state" 8791 + " BSSID=" + mWifiInfo.getBSSID() 8792 + " RSSI=" + mWifiInfo.getRssi() 8793 + " freq=" + mWifiInfo.getFrequency() 8794 + " reason=" + message.arg2 8795 + " -> debounce"); 8796 } 8797 return HANDLED; 8798 } else { 8799 if (DBG) { 8800 int ajst = -1; 8801 if (config != null) ajst = config.autoJoinStatus; 8802 log("NETWORK_DISCONNECTION_EVENT in connected state" 8803 + " BSSID=" + mWifiInfo.getBSSID() 8804 + " RSSI=" + mWifiInfo.getRssi() 8805 + " freq=" + mWifiInfo.getFrequency() 8806 + " was debouncing=" + linkDebouncing 8807 + " reason=" + message.arg2 8808 + " ajst=" + ajst); 8809 } 8810 } 8811 break; 8812 case CMD_AUTO_ROAM: 8813 // Clear the driver roam indication since we are attempting a framework roam 8814 mLastDriverRoamAttempt = 0; 8815 8816 /* Connect command coming from auto-join */ 8817 ScanResult candidate = (ScanResult)message.obj; 8818 String bssid = "any"; 8819 if (candidate != null && candidate.is5GHz()) { 8820 // Only lock BSSID for 5GHz networks 8821 bssid = candidate.BSSID; 8822 } 8823 int netId = mLastNetworkId; 8824 config = getCurrentWifiConfiguration(); 8825 8826 8827 if (config == null) { 8828 loge("AUTO_ROAM and no config, bail out..."); 8829 break; 8830 } 8831 8832 loge("CMD_AUTO_ROAM sup state " 8833 + mSupplicantStateTracker.getSupplicantStateName() 8834 + " my state " + getCurrentState().getName() 8835 + " nid=" + Integer.toString(netId) 8836 + " config " + config.configKey() 8837 + " roam=" + Integer.toString(message.arg2) 8838 + " to " + bssid 8839 + " targetRoamBSSID " + mTargetRoamBSSID); 8840 8841 /* Save the BSSID so as to lock it @ firmware */ 8842 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8843 loge("AUTO_ROAM nothing to do"); 8844 // Same BSSID, nothing to do 8845 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8846 break; 8847 }; 8848 8849 // Make sure the network is enabled, since supplicant will not re-enable it 8850 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8851 8852 if (deferForUserInput(message, netId, false)) { 8853 break; 8854 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8855 WifiConfiguration.USER_BANNED) { 8856 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8857 WifiManager.NOT_AUTHORIZED); 8858 break; 8859 } 8860 8861 boolean ret = false; 8862 if (mLastNetworkId != netId) { 8863 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8864 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8865 ret = true; 8866 } 8867 } else { 8868 ret = mWifiNative.reassociate(); 8869 } 8870 if (ret) { 8871 lastConnectAttempt = System.currentTimeMillis(); 8872 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8873 8874 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8875 mAutoRoaming = message.arg2; 8876 transitionTo(mRoamingState); 8877 8878 } else { 8879 loge("Failed to connect config: " + config + " netId: " + netId); 8880 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8881 WifiManager.ERROR); 8882 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8883 break; 8884 } 8885 break; 8886 default: 8887 return NOT_HANDLED; 8888 } 8889 return HANDLED; 8890 } 8891 8892 @Override 8893 public void exit() { 8894 loge("WifiStateMachine: Leaving Connected state"); 8895 setScanAlarm(false); 8896 mLastDriverRoamAttempt = 0; 8897 8898 stopLazyRoam(); 8899 8900 mWhiteListedSsids = null; 8901 } 8902 } 8903 8904 class DisconnectingState extends State { 8905 8906 @Override 8907 public void enter() { 8908 8909 if (PDBG) { 8910 loge(" Enter DisconnectingState State scan interval " 8911 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8912 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8913 + " screenOn=" + mScreenOn); 8914 } 8915 8916 // Make sure we disconnect: we enter this state prior to connecting to a new 8917 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 8918 // event which in this case will be indicating that supplicant started to associate. 8919 // In some cases supplicant doesn't ignore the connect requests (it might not 8920 // find the target SSID in its cache), 8921 // Therefore we end up stuck that state, hence the need for the watchdog. 8922 disconnectingWatchdogCount++; 8923 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8924 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8925 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8926 } 8927 8928 @Override 8929 public boolean processMessage(Message message) { 8930 logStateAndMessage(message, getClass().getSimpleName()); 8931 switch (message.what) { 8932 case CMD_SET_OPERATIONAL_MODE: 8933 if (message.arg1 != CONNECT_MODE) { 8934 deferMessage(message); 8935 } 8936 break; 8937 case CMD_START_SCAN: 8938 deferMessage(message); 8939 return HANDLED; 8940 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8941 if (disconnectingWatchdogCount == message.arg1) { 8942 if (DBG) log("disconnecting watchdog! -> disconnect"); 8943 handleNetworkDisconnect(); 8944 transitionTo(mDisconnectedState); 8945 } 8946 break; 8947 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8948 /** 8949 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8950 * we have missed the network disconnection, transition to mDisconnectedState 8951 * and handle the rest of the events there 8952 */ 8953 deferMessage(message); 8954 handleNetworkDisconnect(); 8955 transitionTo(mDisconnectedState); 8956 break; 8957 default: 8958 return NOT_HANDLED; 8959 } 8960 return HANDLED; 8961 } 8962 } 8963 8964 class DisconnectedState extends State { 8965 @Override 8966 public void enter() { 8967 // We dont scan frequently if this is a temporary disconnect 8968 // due to p2p 8969 if (mTemporarilyDisconnectWifi) { 8970 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8971 return; 8972 } 8973 8974 if (PDBG) { 8975 loge(" Enter DisconnectedState scan interval " 8976 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8977 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8978 + " screenOn=" + mScreenOn 8979 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8980 + mWifiConfigStore.enableHalBasedPno.get()); 8981 } 8982 8983 /** clear the roaming state, if we were roaming, we failed */ 8984 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8985 8986 if (useHalBasedAutoJoinOffload()) { 8987 startGScanDisconnectedModeOffload("disconnectedEnter"); 8988 } else { 8989 if (mScreenOn) { 8990 /** 8991 * screen lit and => delayed timer 8992 */ 8993 startDelayedScan(mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8994 null, null); 8995 } else { 8996 /** 8997 * screen dark and PNO supported => scan alarm disabled 8998 */ 8999 if (mBackgroundScanSupported) { 9000 /* If a regular scan result is pending, do not initiate background 9001 * scan until the scan results are returned. This is needed because 9002 * initiating a background scan will cancel the regular scan and 9003 * scan results will not be returned until background scanning is 9004 * cleared 9005 */ 9006 if (!mIsScanOngoing) { 9007 enableBackgroundScan(true); 9008 } 9009 } else { 9010 setScanAlarm(true); 9011 } 9012 } 9013 } 9014 9015 /** 9016 * If we have no networks saved, the supplicant stops doing the periodic scan. 9017 * The scans are useful to notify the user of the presence of an open network. 9018 * Note that these are not wake up scans. 9019 */ 9020 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9021 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9022 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9023 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9024 } 9025 9026 mDisconnectedTimeStamp = System.currentTimeMillis(); 9027 mDisconnectedPnoAlarmCount = 0; 9028 } 9029 @Override 9030 public boolean processMessage(Message message) { 9031 boolean ret = HANDLED; 9032 9033 logStateAndMessage(message, getClass().getSimpleName()); 9034 9035 switch (message.what) { 9036 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9037 if (mP2pConnected.get()) break; 9038 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9039 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9040 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9041 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9042 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9043 } 9044 break; 9045 case WifiManager.FORGET_NETWORK: 9046 case CMD_REMOVE_NETWORK: 9047 case CMD_REMOVE_APP_CONFIGURATIONS: 9048 case CMD_REMOVE_USER_CONFIGURATIONS: 9049 // Set up a delayed message here. After the forget/remove is handled 9050 // the handled delayed message will determine if there is a need to 9051 // scan and continue 9052 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9053 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9054 ret = NOT_HANDLED; 9055 break; 9056 case CMD_SET_OPERATIONAL_MODE: 9057 if (message.arg1 != CONNECT_MODE) { 9058 mOperationalMode = message.arg1; 9059 9060 mWifiConfigStore.disableAllNetworks(); 9061 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9062 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9063 setWifiState(WIFI_STATE_DISABLED); 9064 } 9065 transitionTo(mScanModeState); 9066 } 9067 mWifiConfigStore. 9068 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9069 break; 9070 /* Ignore network disconnect */ 9071 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9072 break; 9073 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9074 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9075 if (DBG) { 9076 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9077 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9078 + " debouncing=" + linkDebouncing); 9079 } 9080 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9081 /* ConnectModeState does the rest of the handling */ 9082 ret = NOT_HANDLED; 9083 break; 9084 case CMD_START_SCAN: 9085 if (!checkOrDeferScanAllowed(message)) { 9086 // The scan request was rescheduled 9087 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9088 return HANDLED; 9089 } 9090 if (message.arg1 == SCAN_ALARM_SOURCE) { 9091 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9092 // not be processed) and restart the scan 9093 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9094 if (mP2pConnected.get()) { 9095 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9096 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9097 period); 9098 } 9099 if (!checkAndRestartDelayedScan(message.arg2, 9100 true, period, null, null)) { 9101 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9102 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 9103 + message.arg1 9104 + " " + message.arg2 + ", " + mDelayedScanCounter 9105 + " -> obsolete"); 9106 return HANDLED; 9107 } 9108 /* Disable background scan temporarily during a regular scan */ 9109 enableBackgroundScan(false); 9110 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9111 ret = HANDLED; 9112 } else { 9113 9114 /* 9115 * The SCAN request is not handled in this state and 9116 * would eventually might/will get handled in the 9117 * parent's state. The PNO, if already enabled had to 9118 * get disabled before the SCAN trigger. Hence, stop 9119 * the PNO if already enabled in this state, though the 9120 * SCAN request is not handled(PNO disable before the 9121 * SCAN trigger in any other state is not the right 9122 * place to issue). 9123 */ 9124 9125 enableBackgroundScan(false); 9126 ret = NOT_HANDLED; 9127 } 9128 break; 9129 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9130 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9131 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9132 return HANDLED; 9133 } 9134 /* If we are still in Disconnected state after having discovered a valid 9135 * network this means autojoin didnt managed to associate to the network, 9136 * then restart PNO so as we will try associating to it again. 9137 */ 9138 if (useHalBasedAutoJoinOffload()) { 9139 if (mGScanStartTimeMilli == 0) { 9140 // If offload is not started, then start it... 9141 startGScanDisconnectedModeOffload("disconnectedRestart"); 9142 } else { 9143 // If offload is already started, then check if we need to increase 9144 // the scan period and restart the Gscan 9145 long now = System.currentTimeMillis(); 9146 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9147 && ((now - mGScanStartTimeMilli) 9148 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9149 && (mGScanPeriodMilli 9150 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9151 { 9152 startDisconnectedGScan("disconnected restart gscan"); 9153 } 9154 } 9155 } else { 9156 // If we are still disconnected for a short while after having found a 9157 // network thru PNO, then something went wrong, and for some reason we 9158 // couldn't join this network. 9159 // It might be due to a SW bug in supplicant or the wifi stack, or an 9160 // interoperability issue, or we try to join a bad bss and failed 9161 // In that case we want to restart pno so as to make sure that we will 9162 // attempt again to join that network. 9163 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9164 enableBackgroundScan(false); 9165 enableBackgroundScan(true); 9166 } 9167 return HANDLED; 9168 } 9169 break; 9170 case WifiMonitor.SCAN_RESULTS_EVENT: 9171 case WifiMonitor.SCAN_FAILED_EVENT: 9172 /* Re-enable background scan when a pending scan result is received */ 9173 if (!mScreenOn && mIsScanOngoing 9174 && mBackgroundScanSupported 9175 && !useHalBasedAutoJoinOffload()) { 9176 enableBackgroundScan(true); 9177 } else if (!mScreenOn 9178 && !mIsScanOngoing 9179 && mBackgroundScanSupported 9180 && !useHalBasedAutoJoinOffload()) { 9181 // We receive scan results from legacy PNO, hence restart the PNO alarm 9182 int delay; 9183 if (mDisconnectedPnoAlarmCount < 1) { 9184 delay = 30 * 1000; 9185 } else if (mDisconnectedPnoAlarmCount < 3) { 9186 delay = 60 * 1000; 9187 } else { 9188 delay = 360 * 1000; 9189 } 9190 mDisconnectedPnoAlarmCount++; 9191 if (VDBG) { 9192 loge("Starting PNO alarm " + delay); 9193 } 9194 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9195 System.currentTimeMillis() + delay, 9196 mPnoIntent); 9197 } 9198 /* Handled in parent state */ 9199 ret = NOT_HANDLED; 9200 break; 9201 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9202 NetworkInfo info = (NetworkInfo) message.obj; 9203 mP2pConnected.set(info.isConnected()); 9204 if (mP2pConnected.get()) { 9205 int defaultInterval = mContext.getResources().getInteger( 9206 R.integer.config_wifi_scan_interval_p2p_connected); 9207 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9208 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9209 defaultInterval); 9210 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9211 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9212 if (DBG) log("Turn on scanning after p2p disconnected"); 9213 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9214 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9215 } else { 9216 // If P2P is not connected and there are saved networks, then restart 9217 // scanning at the normal period. This is necessary because scanning might 9218 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9219 // was set to zero. 9220 if (useHalBasedAutoJoinOffload()) { 9221 startGScanDisconnectedModeOffload("p2pRestart"); 9222 } else { 9223 startDelayedScan( 9224 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9225 null, null); 9226 } 9227 } 9228 break; 9229 case CMD_RECONNECT: 9230 case CMD_REASSOCIATE: 9231 if (mTemporarilyDisconnectWifi) { 9232 // Drop a third party reconnect/reassociate if STA is 9233 // temporarily disconnected for p2p 9234 break; 9235 } else { 9236 // ConnectModeState handles it 9237 ret = NOT_HANDLED; 9238 } 9239 break; 9240 case CMD_SCREEN_STATE_CHANGED: 9241 handleScreenStateChanged(message.arg1 != 0); 9242 break; 9243 default: 9244 ret = NOT_HANDLED; 9245 } 9246 return ret; 9247 } 9248 9249 @Override 9250 public void exit() { 9251 mDisconnectedPnoAlarmCount = 0; 9252 /* No need for a background scan upon exit from a disconnected state */ 9253 enableBackgroundScan(false); 9254 setScanAlarm(false); 9255 mAlarmManager.cancel(mPnoIntent); 9256 } 9257 } 9258 9259 class WpsRunningState extends State { 9260 // Tracks the source to provide a reply 9261 private Message mSourceMessage; 9262 @Override 9263 public void enter() { 9264 mSourceMessage = Message.obtain(getCurrentMessage()); 9265 } 9266 @Override 9267 public boolean processMessage(Message message) { 9268 logStateAndMessage(message, getClass().getSimpleName()); 9269 9270 switch (message.what) { 9271 case WifiMonitor.WPS_SUCCESS_EVENT: 9272 // Ignore intermediate success, wait for full connection 9273 break; 9274 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9275 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9276 mSourceMessage.recycle(); 9277 mSourceMessage = null; 9278 deferMessage(message); 9279 transitionTo(mDisconnectedState); 9280 break; 9281 case WifiMonitor.WPS_OVERLAP_EVENT: 9282 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9283 WifiManager.WPS_OVERLAP_ERROR); 9284 mSourceMessage.recycle(); 9285 mSourceMessage = null; 9286 transitionTo(mDisconnectedState); 9287 break; 9288 case WifiMonitor.WPS_FAIL_EVENT: 9289 // Arg1 has the reason for the failure 9290 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9291 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9292 mSourceMessage.recycle(); 9293 mSourceMessage = null; 9294 transitionTo(mDisconnectedState); 9295 } else { 9296 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9297 } 9298 break; 9299 case WifiMonitor.WPS_TIMEOUT_EVENT: 9300 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9301 WifiManager.WPS_TIMED_OUT); 9302 mSourceMessage.recycle(); 9303 mSourceMessage = null; 9304 transitionTo(mDisconnectedState); 9305 break; 9306 case WifiManager.START_WPS: 9307 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9308 break; 9309 case WifiManager.CANCEL_WPS: 9310 if (mWifiNative.cancelWps()) { 9311 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9312 } else { 9313 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9314 } 9315 transitionTo(mDisconnectedState); 9316 break; 9317 /** 9318 * Defer all commands that can cause connections to a different network 9319 * or put the state machine out of connect mode 9320 */ 9321 case CMD_STOP_DRIVER: 9322 case CMD_SET_OPERATIONAL_MODE: 9323 case WifiManager.CONNECT_NETWORK: 9324 case CMD_ENABLE_NETWORK: 9325 case CMD_RECONNECT: 9326 case CMD_REASSOCIATE: 9327 case CMD_ENABLE_ALL_NETWORKS: 9328 deferMessage(message); 9329 break; 9330 case CMD_AUTO_CONNECT: 9331 case CMD_AUTO_ROAM: 9332 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9333 return HANDLED; 9334 case CMD_START_SCAN: 9335 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9336 return HANDLED; 9337 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9338 if (DBG) log("Network connection lost"); 9339 handleNetworkDisconnect(); 9340 break; 9341 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9342 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9343 break; 9344 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9345 // Disregard auth failure events during WPS connection. The 9346 // EAP sequence is retried several times, and there might be 9347 // failures (especially for wps pin). We will get a WPS_XXX 9348 // event at the end of the sequence anyway. 9349 if (DBG) log("Ignore auth failure during WPS connection"); 9350 break; 9351 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9352 // Throw away supplicant state changes when WPS is running. 9353 // We will start getting supplicant state changes once we get 9354 // a WPS success or failure 9355 break; 9356 default: 9357 return NOT_HANDLED; 9358 } 9359 return HANDLED; 9360 } 9361 9362 @Override 9363 public void exit() { 9364 mWifiConfigStore.enableAllNetworks(); 9365 mWifiConfigStore.loadConfiguredNetworks(); 9366 } 9367 } 9368 9369 class SoftApStartingState extends State { 9370 @Override 9371 public void enter() { 9372 final Message message = getCurrentMessage(); 9373 if (message.what == CMD_START_AP) { 9374 final WifiConfiguration config = (WifiConfiguration) message.obj; 9375 9376 if (config == null) { 9377 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9378 } else { 9379 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9380 startSoftApWithConfig(config); 9381 } 9382 } else { 9383 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9384 } 9385 } 9386 @Override 9387 public boolean processMessage(Message message) { 9388 logStateAndMessage(message, getClass().getSimpleName()); 9389 9390 switch(message.what) { 9391 case CMD_START_SUPPLICANT: 9392 case CMD_STOP_SUPPLICANT: 9393 case CMD_START_AP: 9394 case CMD_STOP_AP: 9395 case CMD_START_DRIVER: 9396 case CMD_STOP_DRIVER: 9397 case CMD_SET_OPERATIONAL_MODE: 9398 case CMD_SET_COUNTRY_CODE: 9399 case CMD_SET_FREQUENCY_BAND: 9400 case CMD_START_PACKET_FILTERING: 9401 case CMD_STOP_PACKET_FILTERING: 9402 case CMD_TETHER_STATE_CHANGE: 9403 deferMessage(message); 9404 break; 9405 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9406 WifiConfiguration config = (WifiConfiguration) message.obj; 9407 if (config != null) { 9408 startSoftApWithConfig(config); 9409 } else { 9410 loge("Softap config is null!"); 9411 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9412 } 9413 break; 9414 case CMD_START_AP_SUCCESS: 9415 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9416 transitionTo(mSoftApStartedState); 9417 break; 9418 case CMD_START_AP_FAILURE: 9419 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9420 transitionTo(mInitialState); 9421 break; 9422 default: 9423 return NOT_HANDLED; 9424 } 9425 return HANDLED; 9426 } 9427 } 9428 9429 class SoftApStartedState extends State { 9430 @Override 9431 public boolean processMessage(Message message) { 9432 logStateAndMessage(message, getClass().getSimpleName()); 9433 9434 switch(message.what) { 9435 case CMD_STOP_AP: 9436 if (DBG) log("Stopping Soft AP"); 9437 /* We have not tethered at this point, so we just shutdown soft Ap */ 9438 try { 9439 mNwService.stopAccessPoint(mInterfaceName); 9440 } catch(Exception e) { 9441 loge("Exception in stopAccessPoint()"); 9442 } 9443 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9444 transitionTo(mInitialState); 9445 break; 9446 case CMD_START_AP: 9447 // Ignore a start on a running access point 9448 break; 9449 // Fail client mode operation when soft AP is enabled 9450 case CMD_START_SUPPLICANT: 9451 loge("Cannot start supplicant with a running soft AP"); 9452 setWifiState(WIFI_STATE_UNKNOWN); 9453 break; 9454 case CMD_TETHER_STATE_CHANGE: 9455 TetherStateChange stateChange = (TetherStateChange) message.obj; 9456 if (startTethering(stateChange.available)) { 9457 transitionTo(mTetheringState); 9458 } 9459 break; 9460 default: 9461 return NOT_HANDLED; 9462 } 9463 return HANDLED; 9464 } 9465 } 9466 9467 class TetheringState extends State { 9468 @Override 9469 public void enter() { 9470 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9471 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9472 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9473 } 9474 @Override 9475 public boolean processMessage(Message message) { 9476 logStateAndMessage(message, getClass().getSimpleName()); 9477 9478 switch(message.what) { 9479 case CMD_TETHER_STATE_CHANGE: 9480 TetherStateChange stateChange = (TetherStateChange) message.obj; 9481 if (isWifiTethered(stateChange.active)) { 9482 transitionTo(mTetheredState); 9483 } 9484 return HANDLED; 9485 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9486 if (message.arg1 == mTetherToken) { 9487 loge("Failed to get tether update, shutdown soft access point"); 9488 transitionTo(mSoftApStartedState); 9489 // Needs to be first thing handled 9490 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9491 } 9492 break; 9493 case CMD_START_SUPPLICANT: 9494 case CMD_STOP_SUPPLICANT: 9495 case CMD_START_AP: 9496 case CMD_STOP_AP: 9497 case CMD_START_DRIVER: 9498 case CMD_STOP_DRIVER: 9499 case CMD_SET_OPERATIONAL_MODE: 9500 case CMD_SET_COUNTRY_CODE: 9501 case CMD_SET_FREQUENCY_BAND: 9502 case CMD_START_PACKET_FILTERING: 9503 case CMD_STOP_PACKET_FILTERING: 9504 deferMessage(message); 9505 break; 9506 default: 9507 return NOT_HANDLED; 9508 } 9509 return HANDLED; 9510 } 9511 } 9512 9513 class TetheredState extends State { 9514 @Override 9515 public boolean processMessage(Message message) { 9516 logStateAndMessage(message, getClass().getSimpleName()); 9517 9518 switch(message.what) { 9519 case CMD_TETHER_STATE_CHANGE: 9520 TetherStateChange stateChange = (TetherStateChange) message.obj; 9521 if (!isWifiTethered(stateChange.active)) { 9522 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9523 setHostApRunning(null, false); 9524 setHostApRunning(null, true); 9525 } 9526 return HANDLED; 9527 case CMD_STOP_AP: 9528 if (DBG) log("Untethering before stopping AP"); 9529 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9530 stopTethering(); 9531 transitionTo(mUntetheringState); 9532 // More work to do after untethering 9533 deferMessage(message); 9534 break; 9535 default: 9536 return NOT_HANDLED; 9537 } 9538 return HANDLED; 9539 } 9540 } 9541 9542 class UntetheringState extends State { 9543 @Override 9544 public void enter() { 9545 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9546 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9547 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9548 9549 } 9550 @Override 9551 public boolean processMessage(Message message) { 9552 logStateAndMessage(message, getClass().getSimpleName()); 9553 9554 switch(message.what) { 9555 case CMD_TETHER_STATE_CHANGE: 9556 TetherStateChange stateChange = (TetherStateChange) message.obj; 9557 9558 /* Wait till wifi is untethered */ 9559 if (isWifiTethered(stateChange.active)) break; 9560 9561 transitionTo(mSoftApStartedState); 9562 break; 9563 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9564 if (message.arg1 == mTetherToken) { 9565 loge("Failed to get tether update, force stop access point"); 9566 transitionTo(mSoftApStartedState); 9567 } 9568 break; 9569 case CMD_START_SUPPLICANT: 9570 case CMD_STOP_SUPPLICANT: 9571 case CMD_START_AP: 9572 case CMD_STOP_AP: 9573 case CMD_START_DRIVER: 9574 case CMD_STOP_DRIVER: 9575 case CMD_SET_OPERATIONAL_MODE: 9576 case CMD_SET_COUNTRY_CODE: 9577 case CMD_SET_FREQUENCY_BAND: 9578 case CMD_START_PACKET_FILTERING: 9579 case CMD_STOP_PACKET_FILTERING: 9580 deferMessage(message); 9581 break; 9582 default: 9583 return NOT_HANDLED; 9584 } 9585 return HANDLED; 9586 } 9587 } 9588 9589 /** 9590 * State machine initiated requests can have replyTo set to null indicating 9591 * there are no recepients, we ignore those reply actions. 9592 */ 9593 private void replyToMessage(Message msg, int what) { 9594 if (msg.replyTo == null) return; 9595 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9596 mReplyChannel.replyToMessage(msg, dstMsg); 9597 } 9598 9599 private void replyToMessage(Message msg, int what, int arg1) { 9600 if (msg.replyTo == null) return; 9601 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9602 dstMsg.arg1 = arg1; 9603 mReplyChannel.replyToMessage(msg, dstMsg); 9604 } 9605 9606 private void replyToMessage(Message msg, int what, Object obj) { 9607 if (msg.replyTo == null) return; 9608 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9609 dstMsg.obj = obj; 9610 mReplyChannel.replyToMessage(msg, dstMsg); 9611 } 9612 9613 /** 9614 * arg2 on the source message has a unique id that needs to be retained in replies 9615 * to match the request 9616 * <p>see WifiManager for details 9617 */ 9618 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9619 Message msg = Message.obtain(); 9620 msg.what = what; 9621 msg.arg2 = srcMsg.arg2; 9622 return msg; 9623 } 9624 9625 /** 9626 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9627 * @param msg Must have a WifiConfiguration obj to succeed 9628 */ 9629 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9630 WifiConfiguration config) { 9631 if (config != null && config.preSharedKey != null) { 9632 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9633 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9634 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9635 wifiCredentialEventType); 9636 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9637 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9638 } 9639 } 9640 9641 private static int parseHex(char ch) { 9642 if ('0' <= ch && ch <= '9') { 9643 return ch - '0'; 9644 } else if ('a' <= ch && ch <= 'f') { 9645 return ch - 'a' + 10; 9646 } else if ('A' <= ch && ch <= 'F') { 9647 return ch - 'A' + 10; 9648 } else { 9649 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9650 } 9651 } 9652 9653 private byte[] parseHex(String hex) { 9654 /* This only works for good input; don't throw bad data at it */ 9655 if (hex == null) { 9656 return new byte[0]; 9657 } 9658 9659 if (hex.length() % 2 != 0) { 9660 throw new NumberFormatException(hex + " is not a valid hex string"); 9661 } 9662 9663 byte[] result = new byte[(hex.length())/2 + 1]; 9664 result[0] = (byte) ((hex.length())/2); 9665 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9666 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9667 byte b = (byte) (val & 0xFF); 9668 result[j] = b; 9669 } 9670 9671 return result; 9672 } 9673 9674 private static String makeHex(byte[] bytes) { 9675 StringBuilder sb = new StringBuilder(); 9676 for (byte b : bytes) { 9677 sb.append(String.format("%02x", b)); 9678 } 9679 return sb.toString(); 9680 } 9681 9682 private static String makeHex(byte[] bytes, int from, int len) { 9683 StringBuilder sb = new StringBuilder(); 9684 for (int i = 0; i < len; i++) { 9685 sb.append(String.format("%02x", bytes[from+i])); 9686 } 9687 return sb.toString(); 9688 } 9689 9690 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9691 9692 int len = array1.length + array2.length + array3.length; 9693 9694 if (array1.length != 0) { 9695 len++; /* add another byte for size */ 9696 } 9697 9698 if (array2.length != 0) { 9699 len++; /* add another byte for size */ 9700 } 9701 9702 if (array3.length != 0) { 9703 len++; /* add another byte for size */ 9704 } 9705 9706 byte[] result = new byte[len]; 9707 9708 int index = 0; 9709 if (array1.length != 0) { 9710 result[index] = (byte) (array1.length & 0xFF); 9711 index++; 9712 for (byte b : array1) { 9713 result[index] = b; 9714 index++; 9715 } 9716 } 9717 9718 if (array2.length != 0) { 9719 result[index] = (byte) (array2.length & 0xFF); 9720 index++; 9721 for (byte b : array2) { 9722 result[index] = b; 9723 index++; 9724 } 9725 } 9726 9727 if (array3.length != 0) { 9728 result[index] = (byte) (array3.length & 0xFF); 9729 index++; 9730 for (byte b : array3) { 9731 result[index] = b; 9732 index++; 9733 } 9734 } 9735 return result; 9736 } 9737 9738 private static byte[] concatHex(byte[] array1, byte[] array2) { 9739 9740 int len = array1.length + array2.length; 9741 9742 byte[] result = new byte[len]; 9743 9744 int index = 0; 9745 if (array1.length != 0) { 9746 for (byte b : array1) { 9747 result[index] = b; 9748 index++; 9749 } 9750 } 9751 9752 if (array2.length != 0) { 9753 for (byte b : array2) { 9754 result[index] = b; 9755 index++; 9756 } 9757 } 9758 9759 return result; 9760 } 9761 9762 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9763 if (targetWificonfiguration == null 9764 || targetWificonfiguration.networkId == requestData.networkId) { 9765 logd("id matches targetWifiConfiguration"); 9766 } else { 9767 logd("id does not match targetWifiConfiguration"); 9768 return; 9769 } 9770 9771 TelephonyManager tm = (TelephonyManager) 9772 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9773 9774 if (tm != null) { 9775 StringBuilder sb = new StringBuilder(); 9776 for (String challenge : requestData.data) { 9777 9778 if (challenge == null || challenge.isEmpty()) 9779 continue; 9780 logd("RAND = " + challenge); 9781 9782 byte[] rand = null; 9783 try { 9784 rand = parseHex(challenge); 9785 } catch (NumberFormatException e) { 9786 loge("malformed challenge"); 9787 continue; 9788 } 9789 9790 String base64Challenge = android.util.Base64.encodeToString( 9791 rand, android.util.Base64.NO_WRAP); 9792 /* 9793 * First, try with appType = 2 => USIM according to 9794 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9795 */ 9796 int appType = 2; 9797 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9798 if (tmResponse == null) { 9799 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9800 * appType = 1 => SIM 9801 */ 9802 appType = 1; 9803 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9804 } 9805 logv("Raw Response - " + tmResponse); 9806 9807 if (tmResponse != null && tmResponse.length() > 4) { 9808 byte[] result = android.util.Base64.decode(tmResponse, 9809 android.util.Base64.DEFAULT); 9810 logv("Hex Response -" + makeHex(result)); 9811 int sres_len = result[0]; 9812 String sres = makeHex(result, 1, sres_len); 9813 int kc_offset = 1+sres_len; 9814 int kc_len = result[kc_offset]; 9815 String kc = makeHex(result, 1+kc_offset, kc_len); 9816 sb.append(":" + kc + ":" + sres); 9817 logv("kc:" + kc + " sres:" + sres); 9818 } else { 9819 loge("bad response - " + tmResponse); 9820 } 9821 } 9822 9823 String response = sb.toString(); 9824 logv("Supplicant Response -" + response); 9825 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9826 } else { 9827 loge("could not get telephony manager"); 9828 } 9829 } 9830 9831 void handle3GAuthRequest(SimAuthRequestData requestData) { 9832 StringBuilder sb = new StringBuilder(); 9833 byte[] rand = null; 9834 byte[] authn = null; 9835 String res_type = "UMTS-AUTH"; 9836 9837 if (targetWificonfiguration == null 9838 || targetWificonfiguration.networkId == requestData.networkId) { 9839 logd("id matches targetWifiConfiguration"); 9840 } else { 9841 logd("id does not match targetWifiConfiguration"); 9842 return; 9843 } 9844 if (requestData.data.length == 2) { 9845 try { 9846 rand = parseHex(requestData.data[0]); 9847 authn = parseHex(requestData.data[1]); 9848 } catch (NumberFormatException e) { 9849 loge("malformed challenge"); 9850 } 9851 } else { 9852 loge("malformed challenge"); 9853 } 9854 9855 String tmResponse = ""; 9856 if (rand != null && authn != null) { 9857 String base64Challenge = android.util.Base64.encodeToString( 9858 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9859 9860 TelephonyManager tm = (TelephonyManager) 9861 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9862 if (tm != null) { 9863 int appType = 2; // 2 => USIM 9864 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9865 logv("Raw Response - " + tmResponse); 9866 } else { 9867 loge("could not get telephony manager"); 9868 } 9869 } 9870 9871 if (tmResponse != null && tmResponse.length() > 4) { 9872 byte[] result = android.util.Base64.decode(tmResponse, 9873 android.util.Base64.DEFAULT); 9874 loge("Hex Response - " + makeHex(result)); 9875 byte tag = result[0]; 9876 if (tag == (byte) 0xdb) { 9877 logv("successful 3G authentication "); 9878 int res_len = result[1]; 9879 String res = makeHex(result, 2, res_len); 9880 int ck_len = result[res_len + 2]; 9881 String ck = makeHex(result, res_len + 3, ck_len); 9882 int ik_len = result[res_len + ck_len + 3]; 9883 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9884 sb.append(":" + ik + ":" + ck + ":" + res); 9885 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9886 } else if (tag == (byte) 0xdc) { 9887 loge("synchronisation failure"); 9888 int auts_len = result[1]; 9889 String auts = makeHex(result, 2, auts_len); 9890 res_type = "UMTS-AUTS"; 9891 sb.append(":" + auts); 9892 logv("auts:" + auts); 9893 } else { 9894 loge("bad response - unknown tag = " + tag); 9895 return; 9896 } 9897 } else { 9898 loge("bad response - " + tmResponse); 9899 return; 9900 } 9901 9902 String response = sb.toString(); 9903 logv("Supplicant Response -" + response); 9904 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9905 } 9906 9907 /** 9908 * @param reason reason code from supplicant on network disconnected event 9909 * @return true if this is a suspicious disconnect 9910 */ 9911 static boolean unexpectedDisconnectedReason(int reason) { 9912 return reason == 2 // PREV_AUTH_NOT_VALID 9913 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 9914 || reason == 7 // FRAME_FROM_NONASSOC_STA 9915 || reason == 8 // STA_HAS_LEFT 9916 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 9917 || reason == 14 // MICHAEL_MIC_FAILURE 9918 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 9919 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 9920 || reason == 18 // GROUP_CIPHER_NOT_VALID 9921 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 9922 || reason == 23 // IEEE_802_1X_AUTH_FAILED 9923 || reason == 34; // DISASSOC_LOW_ACK 9924 } 9925} 9926