WifiStateMachine.java revision 807f6a8502cc35bd250b903e2315bcdc34c49a92
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wifi; 18 19import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 24import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 25import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 26import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 27import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 28/** 29 * TODO: 30 * Deprecate WIFI_STATE_UNKNOWN 31 */ 32import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 33 34import android.Manifest; 35import android.app.ActivityManager; 36import android.app.AlarmManager; 37import android.app.AlertDialog; 38import android.app.PendingIntent; 39import android.app.backup.IBackupManager; 40import android.bluetooth.BluetoothAdapter; 41import android.content.BroadcastReceiver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.IPackageManager; 47import android.content.pm.PackageManager; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.DhcpResults; 51import android.net.BaseDhcpStateMachine; 52import android.net.DhcpStateMachine; 53import android.net.Network; 54import android.net.dhcp.DhcpClient; 55import android.net.InterfaceConfiguration; 56import android.net.IpReachabilityMonitor; 57import android.net.LinkAddress; 58import android.net.LinkProperties; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkFactory; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkRequest; 65import android.net.NetworkUtils; 66import android.net.RouteInfo; 67import android.net.StaticIpConfiguration; 68import android.net.TrafficStats; 69import android.net.wifi.RssiPacketCountInfo; 70import android.net.wifi.ScanResult; 71import android.net.wifi.ScanSettings; 72import android.net.wifi.SupplicantState; 73import android.net.wifi.WifiChannel; 74import android.net.wifi.WifiConfiguration; 75import android.net.wifi.WifiConnectionStatistics; 76import android.net.wifi.WifiEnterpriseConfig; 77import android.net.wifi.WifiInfo; 78import android.net.wifi.WifiLinkLayerStats; 79import android.net.wifi.WifiManager; 80import android.net.wifi.WifiScanner; 81import android.net.wifi.WifiSsid; 82import android.net.wifi.WpsInfo; 83import android.net.wifi.WpsResult; 84import android.net.wifi.WpsResult.Status; 85import android.net.wifi.p2p.IWifiP2pManager; 86import android.os.BatteryStats; 87import android.os.Binder; 88import android.os.Bundle; 89import android.os.IBinder; 90import android.os.INetworkManagementService; 91import android.os.Looper; 92import android.os.Message; 93import android.os.Messenger; 94import android.os.PowerManager; 95import android.os.Process; 96import android.os.RemoteException; 97import android.os.ServiceManager; 98import android.os.SystemClock; 99import android.os.SystemProperties; 100import android.os.UserHandle; 101import android.os.WorkSource; 102import android.provider.Settings; 103import android.telephony.TelephonyManager; 104import android.text.TextUtils; 105import android.util.Log; 106import android.util.LruCache; 107 108import com.android.internal.R; 109import com.android.internal.app.IBatteryStats; 110import com.android.internal.util.AsyncChannel; 111import com.android.internal.util.Protocol; 112import com.android.internal.util.State; 113import com.android.internal.util.StateMachine; 114import com.android.server.net.NetlinkTracker; 115import com.android.server.wifi.hotspot2.NetworkDetail; 116import com.android.server.wifi.hotspot2.SupplicantBridge; 117import com.android.server.wifi.hotspot2.Utils; 118import com.android.server.wifi.p2p.WifiP2pServiceImpl; 119 120import java.io.BufferedReader; 121import java.io.FileDescriptor; 122import java.io.FileNotFoundException; 123import java.io.FileReader; 124import java.io.IOException; 125import java.io.PrintWriter; 126import java.net.Inet4Address; 127import java.net.InetAddress; 128import java.util.ArrayList; 129import java.util.Calendar; 130import java.util.HashSet; 131import java.util.LinkedList; 132import java.util.List; 133import java.util.Locale; 134import java.util.Queue; 135import java.util.Random; 136import java.util.concurrent.atomic.AtomicBoolean; 137import java.util.concurrent.atomic.AtomicInteger; 138import java.util.regex.Pattern; 139 140/** 141 * Track the state of Wifi connectivity. All event handling is done here, 142 * and all changes in connectivity state are initiated here. 143 * 144 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 145 * In the current implementation, we support concurrent wifi p2p and wifi operation. 146 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 147 * handles p2p operation. 148 * 149 * @hide 150 */ 151public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler { 152 153 private static final String NETWORKTYPE = "WIFI"; 154 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 155 private static boolean DBG = false; 156 private static boolean VDBG = false; 157 private static boolean VVDBG = false; 158 private static boolean USE_PAUSE_SCANS = false; 159 private static boolean mLogMessages = false; 160 private static final String TAG = "WifiStateMachine"; 161 162 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 163 164 private static final String GOOGLE_OUI = "DA-A1-19"; 165 166 /* temporary debug flag - best network selection development */ 167 private static boolean PDBG = false; 168 169 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 170 * the corresponding BSSID. 171 */ 172 private boolean didBlackListBSSID = false; 173 174 /** 175 * Log with error attribute 176 * 177 * @param s is string log 178 */ 179 protected void loge(String s) { 180 Log.e(getName(), s); 181 } 182 protected void logd(String s) { 183 Log.d(getName(), s); 184 } 185 protected void log(String s) {; 186 Log.d(getName(), s); 187 } 188 189 private WifiMonitor mWifiMonitor; 190 private WifiNative mWifiNative; 191 private WifiConfigStore mWifiConfigStore; 192 private WifiAutoJoinController mWifiAutoJoinController; 193 private INetworkManagementService mNwService; 194 private ConnectivityManager mCm; 195 private WifiLogger mWifiLogger; 196 private WifiApConfigStore mWifiApConfigStore; 197 private final boolean mP2pSupported; 198 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 199 private boolean mTemporarilyDisconnectWifi = false; 200 private final String mPrimaryDeviceType; 201 202 /* Scan results handling */ 203 private List<ScanDetail> mScanResults = new ArrayList<>(); 204 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 205 private static final int SCAN_RESULT_CACHE_SIZE = 160; 206 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 207 // For debug, number of known scan results that were found as part of last scan result event, 208 // as well the number of scans results returned by the supplicant with that message 209 private int mNumScanResultsKnown; 210 private int mNumScanResultsReturned; 211 212 private boolean mScreenOn = false; 213 214 /* Chipset supports background scan */ 215 private final boolean mBackgroundScanSupported; 216 217 private final String mInterfaceName; 218 /* Tethering interface could be separate from wlan interface */ 219 private String mTetherInterfaceName; 220 221 private int mLastSignalLevel = -1; 222 private String mLastBssid; 223 private int mLastNetworkId; // The network Id we successfully joined 224 private boolean linkDebouncing = false; 225 226 private boolean mHalBasedPnoDriverSupported = false; 227 228 // Below booleans are configurations coming from the Developper Settings 229 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 230 private boolean mHalBasedPnoEnableInDevSettings = false; 231 232 233 private int mHalFeatureSet = 0; 234 private static int mPnoResultFound = 0; 235 236 @Override 237 public void onPnoNetworkFound(ScanResult results[]) { 238 if (DBG) { 239 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 240 for (int i = 0; i < results.length; i++) { 241 Log.e(TAG, results[i].toString()); 242 } 243 } 244 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 245 } 246 247 public void processPnoNetworkFound(ScanResult results[]) { 248 ScanSettings settings = new ScanSettings(); 249 settings.channelSet = new ArrayList<WifiChannel>(); 250 StringBuilder sb = new StringBuilder(); 251 sb.append(""); 252 for (int i=0; i<results.length; i++) { 253 WifiChannel channel = new WifiChannel(); 254 channel.freqMHz = results[i].frequency; 255 settings.channelSet.add(channel); 256 sb.append(results[i].SSID).append(" "); 257 } 258 259 stopPnoOffload(); 260 261 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 262 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 263 mPnoResultFound ++; 264 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 265 int delay = 30 * 1000; 266 // reconfigure Pno after 1 minutes if we're still in disconnected state 267 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 268 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 269 (long)delay); 270 mRestartAutoJoinOffloadCounter++; 271 } 272 273 public void registerNetworkDisabled(int netId) { 274 // Restart legacy PNO and autojoin offload if needed 275 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 276 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 277 mRestartAutoJoinOffloadCounter++; 278 } 279 280 // Testing various network disconnect cases by sending lots of spurious 281 // disconnect to supplicant 282 private boolean testNetworkDisconnect = false; 283 284 private boolean mEnableRssiPolling = false; 285 private boolean mLegacyPnoEnabled = false; 286 private int mRssiPollToken = 0; 287 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 288 * In CONNECT_MODE, the STA can scan and connect to an access point 289 * In SCAN_ONLY_MODE, the STA can only scan for access points 290 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 291 */ 292 private int mOperationalMode = CONNECT_MODE; 293 private boolean mIsScanOngoing = false; 294 private boolean mIsFullScanOngoing = false; 295 private boolean mSendScanResultsBroadcast = false; 296 297 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 298 private WorkSource mScanWorkSource = null; 299 private static final int UNKNOWN_SCAN_SOURCE = -1; 300 private static final int SCAN_ALARM_SOURCE = -2; 301 private static final int ADD_OR_UPDATE_SOURCE = -3; 302 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 303 private static final int ENABLE_WIFI = -5; 304 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 305 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 306 307 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 308 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 309 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 310 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 311 312 /* Tracks if state machine has received any screen state change broadcast yet. 313 * We can miss one of these at boot. 314 */ 315 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 316 317 private boolean mBluetoothConnectionActive = false; 318 319 private PowerManager.WakeLock mSuspendWakeLock; 320 321 /** 322 * Interval in milliseconds between polling for RSSI 323 * and linkspeed information 324 */ 325 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 326 327 /** 328 * Interval in milliseconds between receiving a disconnect event 329 * while connected to a good AP, and handling the disconnect proper 330 */ 331 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 332 333 /** 334 * Delay between supplicant restarts upon failure to establish connection 335 */ 336 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 337 338 /** 339 * Number of times we attempt to restart supplicant 340 */ 341 private static final int SUPPLICANT_RESTART_TRIES = 5; 342 343 private int mSupplicantRestartCount = 0; 344 /* Tracks sequence number on stop failure message */ 345 private int mSupplicantStopFailureToken = 0; 346 347 /** 348 * Tether state change notification time out 349 */ 350 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 351 352 /* Tracks sequence number on a tether notification time out */ 353 private int mTetherToken = 0; 354 355 /** 356 * Driver start time out. 357 */ 358 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 359 360 /* Tracks sequence number on a driver time out */ 361 private int mDriverStartToken = 0; 362 363 /** 364 * The link properties of the wifi interface. 365 * Do not modify this directly; use updateLinkProperties instead. 366 */ 367 private LinkProperties mLinkProperties; 368 369 /* Tracks sequence number on a periodic scan message */ 370 private int mPeriodicScanToken = 0; 371 372 // Wakelock held during wifi start/stop and driver load/unload 373 private PowerManager.WakeLock mWakeLock; 374 375 private Context mContext; 376 377 private final Object mDhcpResultsLock = new Object(); 378 private DhcpResults mDhcpResults; 379 380 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 381 private WifiInfo mWifiInfo; 382 private NetworkInfo mNetworkInfo; 383 private NetworkCapabilities mNetworkCapabilities; 384 private SupplicantStateTracker mSupplicantStateTracker; 385 private BaseDhcpStateMachine mDhcpStateMachine; 386 private boolean mDhcpActive = false; 387 388 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 389 390 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 391 392 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 393 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 394 395 // Roaming failure count 396 private int mRoamFailCount = 0; 397 398 // This is the BSSID we are trying to associate to, it can be set to "any" 399 // if we havent selected a BSSID for joining. 400 // if we havent selected a BSSID for joining. 401 // The BSSID we are associated to is found in mWifiInfo 402 private String mTargetRoamBSSID = "any"; 403 404 private long mLastDriverRoamAttempt = 0; 405 406 private WifiConfiguration targetWificonfiguration = null; 407 408 // Used as debug to indicate which configuration last was saved 409 private WifiConfiguration lastSavedConfigurationAttempt = null; 410 411 // Used as debug to indicate which configuration last was removed 412 private WifiConfiguration lastForgetConfigurationAttempt = null; 413 414 //Random used by softAP channel Selection 415 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 416 417 boolean isRoaming() { 418 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 419 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 420 } 421 422 public void autoRoamSetBSSID(int netId, String bssid) { 423 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 424 } 425 426 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 427 boolean ret = true; 428 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 429 if (bssid == null) bssid = "any"; 430 if (config == null) return false; // Nothing to do 431 432 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 433 return false; // We didnt change anything 434 } 435 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 436 // Changing to ANY 437 if (!mWifiConfigStore.roamOnAny) { 438 ret = false; // Nothing to do 439 } 440 } 441 if (VDBG) { 442 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 443 } 444 config.autoJoinBSSID = bssid; 445 mTargetRoamBSSID = bssid; 446 mWifiConfigStore.saveWifiConfigBSSID(config); 447 return ret; 448 } 449 450 /** 451 * Save the UID correctly depending on if this is a new or existing network. 452 * @return true if operation is authorized, false otherwise 453 */ 454 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 455 if (!mWifiConfigStore.isNetworkConfigured(config)) { 456 config.creatorUid = uid; 457 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 458 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 459 return false; 460 } 461 462 config.lastUpdateUid = uid; 463 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 464 465 return true; 466 467 } 468 469 /** 470 * Checks to see if user has specified if the apps configuration is connectable. 471 * If the user hasn't specified we query the user and return true. 472 * 473 * @param message The message to be deferred 474 * @param netId Network id of the configuration to check against 475 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 476 * CONFIG_OVERRIDE_PERMISSION 477 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 478 */ 479 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 480 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 481 482 // We can only evaluate saved configurations. 483 if (config == null) { 484 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 485 return true; 486 } 487 488 switch (config.userApproved) { 489 case WifiConfiguration.USER_APPROVED: 490 case WifiConfiguration.USER_BANNED: 491 return false; 492 case WifiConfiguration.USER_PENDING: 493 default: // USER_UNSPECIFIED 494 /* the intention was to ask user here; but a dialog box is * 495 * too invasive; so we are going to allow connection for now */ 496 config.userApproved = WifiConfiguration.USER_APPROVED; 497 return false; 498 } 499 } 500 501 /** 502 * Subset of link properties coming from netlink. 503 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 504 * and domains obtained from router advertisements (RFC 6106). 505 */ 506 private NetlinkTracker mNetlinkTracker; 507 508 private IpReachabilityMonitor mIpReachabilityMonitor; 509 510 private AlarmManager mAlarmManager; 511 private PendingIntent mScanIntent; 512 private PendingIntent mDriverStopIntent; 513 private PendingIntent mPnoIntent; 514 515 private int mDisconnectedPnoAlarmCount = 0; 516 /* Tracks current frequency mode */ 517 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 518 519 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 520 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 521 522 // Channel for sending replies. 523 private AsyncChannel mReplyChannel = new AsyncChannel(); 524 525 private WifiP2pServiceImpl mWifiP2pServiceImpl; 526 527 // Used to initiate a connection with WifiP2pService 528 private AsyncChannel mWifiP2pChannel; 529 private AsyncChannel mWifiApConfigChannel; 530 531 private WifiScanner mWifiScanner; 532 533 private int mConnectionRequests = 0; 534 private WifiNetworkFactory mNetworkFactory; 535 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 536 private WifiNetworkAgent mNetworkAgent; 537 538 private String[] mWhiteListedSsids = null; 539 540 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 541 // We should really persist that into the networkHistory.txt file, and read it back when 542 // WifiStateMachine starts up 543 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 544 545 // Used to filter out requests we couldn't possibly satisfy. 546 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 547 548 /* The base for wifi message types */ 549 static final int BASE = Protocol.BASE_WIFI; 550 /* Start the supplicant */ 551 static final int CMD_START_SUPPLICANT = BASE + 11; 552 /* Stop the supplicant */ 553 static final int CMD_STOP_SUPPLICANT = BASE + 12; 554 /* Start the driver */ 555 static final int CMD_START_DRIVER = BASE + 13; 556 /* Stop the driver */ 557 static final int CMD_STOP_DRIVER = BASE + 14; 558 /* Indicates Static IP succeeded */ 559 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 560 /* Indicates Static IP failed */ 561 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 562 /* Indicates supplicant stop failed */ 563 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 564 /* Delayed stop to avoid shutting down driver too quick*/ 565 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 566 /* A delayed message sent to start driver when it fail to come up */ 567 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 568 569 /* Start the soft access point */ 570 static final int CMD_START_AP = BASE + 21; 571 /* Indicates soft ap start succeeded */ 572 static final int CMD_START_AP_SUCCESS = BASE + 22; 573 /* Indicates soft ap start failed */ 574 static final int CMD_START_AP_FAILURE = BASE + 23; 575 /* Stop the soft access point */ 576 static final int CMD_STOP_AP = BASE + 24; 577 /* Set the soft access point configuration */ 578 static final int CMD_SET_AP_CONFIG = BASE + 25; 579 /* Soft access point configuration set completed */ 580 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 581 /* Request the soft access point configuration */ 582 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 583 /* Response to access point configuration request */ 584 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 585 /* Invoked when getting a tether state change notification */ 586 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 587 /* A delayed message sent to indicate tether state change failed to arrive */ 588 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 589 590 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 591 592 /* Supplicant commands */ 593 /* Is supplicant alive ? */ 594 static final int CMD_PING_SUPPLICANT = BASE + 51; 595 /* Add/update a network configuration */ 596 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 597 /* Delete a network */ 598 static final int CMD_REMOVE_NETWORK = BASE + 53; 599 /* Enable a network. The device will attempt a connection to the given network. */ 600 static final int CMD_ENABLE_NETWORK = BASE + 54; 601 /* Enable all networks */ 602 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 603 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 604 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 605 /* Clear the blacklist network list */ 606 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 607 /* Save configuration */ 608 static final int CMD_SAVE_CONFIG = BASE + 58; 609 /* Get configured networks */ 610 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 611 /* Get available frequencies */ 612 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 613 /* Get adaptors */ 614 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 615 /* Get configured networks with real preSharedKey */ 616 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 617 /* Get Link Layer Stats thru HAL */ 618 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 619 /* Supplicant commands after driver start*/ 620 /* Initiate a scan */ 621 static final int CMD_START_SCAN = BASE + 71; 622 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 623 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 624 /* Disconnect from a network */ 625 static final int CMD_DISCONNECT = BASE + 73; 626 /* Reconnect to a network */ 627 static final int CMD_RECONNECT = BASE + 74; 628 /* Reassociate to a network */ 629 static final int CMD_REASSOCIATE = BASE + 75; 630 /* Get Connection Statistis */ 631 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 632 633 /* Controls suspend mode optimizations 634 * 635 * When high perf mode is enabled, suspend mode optimizations are disabled 636 * 637 * When high perf mode is disabled, suspend mode optimizations are enabled 638 * 639 * Suspend mode optimizations include: 640 * - packet filtering 641 * - turn off roaming 642 * - DTIM wake up settings 643 */ 644 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 645 /* Set the country code */ 646 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 647 /* Enables RSSI poll */ 648 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 649 /* RSSI poll */ 650 static final int CMD_RSSI_POLL = BASE + 83; 651 /* Set up packet filtering */ 652 static final int CMD_START_PACKET_FILTERING = BASE + 84; 653 /* Clear packet filter */ 654 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 655 /* Enable suspend mode optimizations in the driver */ 656 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 657 /* Delayed NETWORK_DISCONNECT */ 658 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 659 /* When there are no saved networks, we do a periodic scan to notify user of 660 * an open network */ 661 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 662 /* Test network Disconnection NETWORK_DISCONNECT */ 663 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 664 665 private int testNetworkDisconnectCounter = 0; 666 667 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 668 static final int MULTICAST_V6 = 1; 669 static final int MULTICAST_V4 = 0; 670 671 /* Set the frequency band */ 672 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 673 /* Enable TDLS on a specific MAC address */ 674 static final int CMD_ENABLE_TDLS = BASE + 92; 675 /* DHCP/IP configuration watchdog */ 676 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 677 678 /** 679 * Watchdog for protecting against b/16823537 680 * Leave time for 4-way handshake to succeed 681 */ 682 static final int ROAM_GUARD_TIMER_MSEC = 15000; 683 684 int roamWatchdogCount = 0; 685 /* Roam state watchdog */ 686 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 687 /* Screen change intent handling */ 688 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 689 690 /* Disconnecting state watchdog */ 691 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 692 693 /* Remove a packages associated configrations */ 694 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 695 696 /* Disable an ephemeral network */ 697 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 698 699 /* Get matching network */ 700 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 701 702 /* alert from firmware */ 703 static final int CMD_FIRMWARE_ALERT = BASE + 100; 704 705 /** 706 * Make this timer 40 seconds, which is about the normal DHCP timeout. 707 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 708 * for more than 30 seconds. 709 */ 710 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 711 712 int obtainingIpWatchdogCount = 0; 713 714 /* Commands from/to the SupplicantStateTracker */ 715 /* Reset the supplicant state tracker */ 716 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 717 718 int disconnectingWatchdogCount = 0; 719 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 720 721 /* P2p commands */ 722 /* We are ok with no response here since we wont do much with it anyway */ 723 public static final int CMD_ENABLE_P2P = BASE + 131; 724 /* In order to shut down supplicant cleanly, we wait till p2p has 725 * been disabled */ 726 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 727 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 728 729 public static final int CMD_BOOT_COMPLETED = BASE + 134; 730 731 /* We now have a valid IP configuration. */ 732 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 733 /* We no longer have a valid IP configuration. */ 734 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 735 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 736 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 737 738 /* Supplicant is trying to associate to a given BSSID */ 739 static final int CMD_TARGET_BSSID = BASE + 141; 740 741 /* Reload all networks and reconnect */ 742 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 743 744 static final int CMD_AUTO_CONNECT = BASE + 143; 745 746 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 747 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 748 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 749 750 static final int CMD_UNWANTED_NETWORK = BASE + 144; 751 752 static final int CMD_AUTO_ROAM = BASE + 145; 753 754 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 755 756 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 757 758 static final int CMD_NETWORK_STATUS = BASE + 148; 759 760 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 761 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 762 763 /* Remove a packages associated configrations */ 764 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 765 766 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 767 768 /* used to restart PNO when it was stopped due to association attempt */ 769 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 770 771 static int mRestartAutoJoinOffloadCounter = 0; 772 773 /* used to log if PNO was started */ 774 static final int CMD_STARTED_PNO_DBG = BASE + 155; 775 776 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 777 778 /* used to log if PNO was started */ 779 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 780 781 /* used to log if GSCAN was started */ 782 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 783 784 785 /* Wifi state machine modes of operation */ 786 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 787 public static final int CONNECT_MODE = 1; 788 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 789 public static final int SCAN_ONLY_MODE = 2; 790 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 791 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 792 793 private static final int SUCCESS = 1; 794 private static final int FAILURE = -1; 795 796 /* Tracks if suspend optimizations need to be disabled by DHCP, 797 * screen or due to high perf mode. 798 * When any of them needs to disable it, we keep the suspend optimizations 799 * disabled 800 */ 801 private int mSuspendOptNeedsDisabled = 0; 802 803 private static final int SUSPEND_DUE_TO_DHCP = 1; 804 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 805 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 806 807 /* Tracks if user has enabled suspend optimizations through settings */ 808 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 809 810 /** 811 * Default framework scan interval in milliseconds. This is used in the scenario in which 812 * wifi chipset does not support background scanning to set up a 813 * periodic wake up scan so that the device can connect to a new access 814 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 815 * override this. 816 */ 817 private final int mDefaultFrameworkScanIntervalMs; 818 819 820 /** 821 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 822 */ 823 private final int mNoNetworksPeriodicScan; 824 825 /** 826 * Supplicant scan interval in milliseconds. 827 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 828 * from the default config if the setting is not set 829 */ 830 private long mSupplicantScanIntervalMs; 831 832 /** 833 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 834 */ 835 private long lastFullBandConnectedTimeMilli; 836 837 /** 838 * time interval to the next full band scan we will perform for 839 * autojoin while connected with screen lit 840 */ 841 private long fullBandConnectedTimeIntervalMilli; 842 843 /** 844 * max time interval to the next full band scan we will perform for 845 * autojoin while connected with screen lit 846 * Max time is 5 minutes 847 */ 848 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 849 850 /** 851 * Minimum time interval between enabling all networks. 852 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 853 * due to enabling every time. We add a threshold to avoid this. 854 */ 855 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 856 private long mLastEnableAllNetworksTime; 857 858 int mRunningBeaconCount = 0; 859 860 /** 861 * Starting and shutting down driver too quick causes problems leading to driver 862 * being in a bad state. Delay driver stop. 863 */ 864 private final int mDriverStopDelayMs; 865 private int mDelayedStopCounter; 866 private boolean mInDelayedStop = false; 867 868 // there is a delay between StateMachine change country code and Supplicant change country code 869 // here save the current WifiStateMachine set country code 870 private volatile String mSetCountryCode = null; 871 872 // Supplicant doesn't like setting the same country code multiple times (it may drop 873 // currently connected network), so we save the current device set country code here to avoid 874 // redundency 875 private String mDriverSetCountryCode = null; 876 877 /* Default parent state */ 878 private State mDefaultState = new DefaultState(); 879 /* Temporary initial state */ 880 private State mInitialState = new InitialState(); 881 /* Driver loaded, waiting for supplicant to start */ 882 private State mSupplicantStartingState = new SupplicantStartingState(); 883 /* Driver loaded and supplicant ready */ 884 private State mSupplicantStartedState = new SupplicantStartedState(); 885 /* Waiting for supplicant to stop and monitor to exit */ 886 private State mSupplicantStoppingState = new SupplicantStoppingState(); 887 /* Driver start issued, waiting for completed event */ 888 private State mDriverStartingState = new DriverStartingState(); 889 /* Driver started */ 890 private State mDriverStartedState = new DriverStartedState(); 891 /* Wait until p2p is disabled 892 * This is a special state which is entered right after we exit out of DriverStartedState 893 * before transitioning to another state. 894 */ 895 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 896 /* Driver stopping */ 897 private State mDriverStoppingState = new DriverStoppingState(); 898 /* Driver stopped */ 899 private State mDriverStoppedState = new DriverStoppedState(); 900 /* Scan for networks, no connection will be established */ 901 private State mScanModeState = new ScanModeState(); 902 /* Connecting to an access point */ 903 private State mConnectModeState = new ConnectModeState(); 904 /* Connected at 802.11 (L2) level */ 905 private State mL2ConnectedState = new L2ConnectedState(); 906 /* fetching IP after connection to access point (assoc+auth complete) */ 907 private State mObtainingIpState = new ObtainingIpState(); 908 /* Waiting for link quality verification to be complete */ 909 private State mVerifyingLinkState = new VerifyingLinkState(); 910 /* Connected with IP addr */ 911 private State mConnectedState = new ConnectedState(); 912 /* Roaming */ 913 private State mRoamingState = new RoamingState(); 914 /* disconnect issued, waiting for network disconnect confirmation */ 915 private State mDisconnectingState = new DisconnectingState(); 916 /* Network is not connected, supplicant assoc+auth is not complete */ 917 private State mDisconnectedState = new DisconnectedState(); 918 /* Waiting for WPS to be completed*/ 919 private State mWpsRunningState = new WpsRunningState(); 920 921 /* Soft ap is starting up */ 922 private State mSoftApStartingState = new SoftApStartingState(); 923 /* Soft ap is running */ 924 private State mSoftApStartedState = new SoftApStartedState(); 925 /* Soft ap is running and we are waiting for tether notification */ 926 private State mTetheringState = new TetheringState(); 927 /* Soft ap is running and we are tethered through connectivity service */ 928 private State mTetheredState = new TetheredState(); 929 /* Waiting for untether confirmation before stopping soft Ap */ 930 private State mUntetheringState = new UntetheringState(); 931 932 933 934 private class WifiScanListener implements WifiScanner.ScanListener { 935 @Override 936 public void onSuccess() { 937 Log.e(TAG, "WifiScanListener onSuccess"); 938 }; 939 @Override 940 public void onFailure(int reason, String description) { 941 Log.e(TAG, "WifiScanListener onFailure"); 942 }; 943 @Override 944 public void onPeriodChanged(int periodInMs) { 945 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 946 } 947 @Override 948 public void onResults(WifiScanner.ScanData[] results) { 949 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 950 } 951 @Override 952 public void onFullResult(ScanResult fullScanResult) { 953 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 954 } 955 956 WifiScanListener() {} 957 } 958 959 WifiScanListener mWifiScanListener = new WifiScanListener(); 960 961 962 private class TetherStateChange { 963 ArrayList<String> available; 964 ArrayList<String> active; 965 966 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 967 available = av; 968 active = ac; 969 } 970 } 971 972 public static class SimAuthRequestData { 973 int networkId; 974 int protocol; 975 String ssid; 976 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 977 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 978 String[] data; 979 } 980 981 /** 982 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 983 * {@link WifiManager#WIFI_STATE_DISABLING}, 984 * {@link WifiManager#WIFI_STATE_ENABLED}, 985 * {@link WifiManager#WIFI_STATE_ENABLING}, 986 * {@link WifiManager#WIFI_STATE_UNKNOWN} 987 */ 988 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 989 990 /** 991 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 992 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 993 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 994 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 995 * {@link WifiManager#WIFI_AP_STATE_FAILED} 996 */ 997 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 998 999 private static final int SCAN_REQUEST = 0; 1000 private static final String ACTION_START_SCAN = 1001 "com.android.server.WifiManager.action.START_SCAN"; 1002 1003 private static final int PNO_START_REQUEST = 0; 1004 private static final String ACTION_START_PNO = 1005 "com.android.server.WifiManager.action.START_PNO"; 1006 1007 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1008 private static final int DRIVER_STOP_REQUEST = 0; 1009 private static final String ACTION_DELAYED_DRIVER_STOP = 1010 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1011 1012 /** 1013 * Keep track of whether WIFI is running. 1014 */ 1015 private boolean mIsRunning = false; 1016 1017 /** 1018 * Keep track of whether we last told the battery stats we had started. 1019 */ 1020 private boolean mReportedRunning = false; 1021 1022 /** 1023 * Most recently set source of starting WIFI. 1024 */ 1025 private final WorkSource mRunningWifiUids = new WorkSource(); 1026 1027 /** 1028 * The last reported UIDs that were responsible for starting WIFI. 1029 */ 1030 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1031 1032 private final IBatteryStats mBatteryStats; 1033 1034 private String mTcpBufferSizes = null; 1035 1036 // Used for debug and stats gathering 1037 private static int sScanAlarmIntentCount = 0; 1038 1039 final static int frameworkMinScanIntervalSaneValue = 10000; 1040 1041 boolean mPnoEnabled; 1042 boolean mLazyRoamEnabled; 1043 long mGScanStartTimeMilli; 1044 long mGScanPeriodMilli; 1045 1046 public WifiStateMachine(Context context, String wlanInterface, 1047 WifiTrafficPoller trafficPoller) { 1048 super("WifiStateMachine"); 1049 mContext = context; 1050 mSetCountryCode = Settings.Global.getString( 1051 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1052 mInterfaceName = wlanInterface; 1053 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1054 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1055 BatteryStats.SERVICE_NAME)); 1056 1057 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1058 mNwService = INetworkManagementService.Stub.asInterface(b); 1059 1060 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1061 PackageManager.FEATURE_WIFI_DIRECT); 1062 1063 mWifiNative = new WifiNative(mInterfaceName); 1064 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1065 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1066 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1067 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1068 mWifiLogger = new WifiLogger(this); 1069 1070 mWifiInfo = new WifiInfo(); 1071 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1072 getHandler()); 1073 mLinkProperties = new LinkProperties(); 1074 1075 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1076 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1077 1078 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1079 1080 mNetworkInfo.setIsAvailable(false); 1081 mLastBssid = null; 1082 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1083 mLastSignalLevel = -1; 1084 1085 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1086 public void update() { 1087 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1088 } 1089 }); 1090 try { 1091 mNwService.registerObserver(mNetlinkTracker); 1092 } catch (RemoteException e) { 1093 loge("Couldn't register netlink tracker: " + e.toString()); 1094 } 1095 1096 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1097 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1098 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1099 1100 // Make sure the interval is not configured less than 10 seconds 1101 int period = mContext.getResources().getInteger( 1102 R.integer.config_wifi_framework_scan_interval); 1103 if (period < frameworkMinScanIntervalSaneValue) { 1104 period = frameworkMinScanIntervalSaneValue; 1105 } 1106 mDefaultFrameworkScanIntervalMs = period; 1107 1108 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1109 R.integer.config_wifi_no_network_periodic_scan_interval); 1110 1111 mDriverStopDelayMs = mContext.getResources().getInteger( 1112 R.integer.config_wifi_driver_stop_delay); 1113 1114 mBackgroundScanSupported = mContext.getResources().getBoolean( 1115 R.bool.config_wifi_background_scan_support); 1116 1117 mPrimaryDeviceType = mContext.getResources().getString( 1118 R.string.config_wifi_p2p_device_type); 1119 1120 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1121 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1122 1123 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1124 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1125 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1126 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1127 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1128 // TODO - needs to be a bit more dynamic 1129 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1130 1131 mContext.registerReceiver( 1132 new BroadcastReceiver() { 1133 @Override 1134 public void onReceive(Context context, Intent intent) { 1135 ArrayList<String> available = intent.getStringArrayListExtra( 1136 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1137 ArrayList<String> active = intent.getStringArrayListExtra( 1138 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1139 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1140 } 1141 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1142 1143 mContext.registerReceiver( 1144 new BroadcastReceiver() { 1145 @Override 1146 public void onReceive(Context context, Intent intent) { 1147 sScanAlarmIntentCount++; // Used for debug only 1148 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1149 if (VDBG) 1150 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1151 } 1152 }, 1153 new IntentFilter(ACTION_START_SCAN)); 1154 1155 mContext.registerReceiver( 1156 new BroadcastReceiver() { 1157 @Override 1158 public void onReceive(Context context, Intent intent) { 1159 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1160 mRestartAutoJoinOffloadCounter, "pno alarm"); 1161 if (DBG) 1162 logd("PNO START ALARM sent"); 1163 } 1164 }, 1165 new IntentFilter(ACTION_START_PNO)); 1166 1167 1168 IntentFilter filter = new IntentFilter(); 1169 filter.addAction(Intent.ACTION_SCREEN_ON); 1170 filter.addAction(Intent.ACTION_SCREEN_OFF); 1171 mContext.registerReceiver( 1172 new BroadcastReceiver() { 1173 @Override 1174 public void onReceive(Context context, Intent intent) { 1175 String action = intent.getAction(); 1176 1177 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1178 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1179 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1180 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1181 } 1182 } 1183 }, filter); 1184 1185 mContext.registerReceiver( 1186 new BroadcastReceiver() { 1187 @Override 1188 public void onReceive(Context context, Intent intent) { 1189 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1190 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1191 } 1192 }, 1193 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1194 1195 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1196 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1197 new ContentObserver(getHandler()) { 1198 @Override 1199 public void onChange(boolean selfChange) { 1200 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1201 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1202 } 1203 }); 1204 1205 mContext.registerReceiver( 1206 new BroadcastReceiver() { 1207 @Override 1208 public void onReceive(Context context, Intent intent) { 1209 sendMessage(CMD_BOOT_COMPLETED); 1210 } 1211 }, 1212 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1213 1214 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1215 1216 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1217 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1218 1219 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1220 mSuspendWakeLock.setReferenceCounted(false); 1221 1222 mTcpBufferSizes = mContext.getResources().getString( 1223 com.android.internal.R.string.config_wifi_tcp_buffers); 1224 1225 addState(mDefaultState); 1226 addState(mInitialState, mDefaultState); 1227 addState(mSupplicantStartingState, mDefaultState); 1228 addState(mSupplicantStartedState, mDefaultState); 1229 addState(mDriverStartingState, mSupplicantStartedState); 1230 addState(mDriverStartedState, mSupplicantStartedState); 1231 addState(mScanModeState, mDriverStartedState); 1232 addState(mConnectModeState, mDriverStartedState); 1233 addState(mL2ConnectedState, mConnectModeState); 1234 addState(mObtainingIpState, mL2ConnectedState); 1235 addState(mVerifyingLinkState, mL2ConnectedState); 1236 addState(mConnectedState, mL2ConnectedState); 1237 addState(mRoamingState, mL2ConnectedState); 1238 addState(mDisconnectingState, mConnectModeState); 1239 addState(mDisconnectedState, mConnectModeState); 1240 addState(mWpsRunningState, mConnectModeState); 1241 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1242 addState(mDriverStoppingState, mSupplicantStartedState); 1243 addState(mDriverStoppedState, mSupplicantStartedState); 1244 addState(mSupplicantStoppingState, mDefaultState); 1245 addState(mSoftApStartingState, mDefaultState); 1246 addState(mSoftApStartedState, mDefaultState); 1247 addState(mTetheringState, mSoftApStartedState); 1248 addState(mTetheredState, mSoftApStartedState); 1249 addState(mUntetheringState, mSoftApStartedState); 1250 1251 setInitialState(mInitialState); 1252 1253 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1254 setLogOnlyTransitions(false); 1255 if (VDBG) setDbg(true); 1256 1257 //start the state machine 1258 start(); 1259 1260 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1261 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1262 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1263 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1264 } 1265 1266 1267 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1268 Intent intent = new Intent(action, null); 1269 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1270 //intent.setPackage(this.getClass().getPackage().getName()); 1271 intent.setPackage("android"); 1272 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1273 } 1274 1275 private int mVerboseLoggingLevel = 0; 1276 1277 int getVerboseLoggingLevel() { 1278 return mVerboseLoggingLevel; 1279 } 1280 1281 void enableVerboseLogging(int verbose) { 1282 mVerboseLoggingLevel = verbose; 1283 if (verbose > 0) { 1284 DBG = true; 1285 VDBG = true; 1286 PDBG = true; 1287 mLogMessages = true; 1288 mWifiNative.setSupplicantLogLevel("DEBUG"); 1289 } else { 1290 DBG = false; 1291 VDBG = false; 1292 PDBG = false; 1293 mLogMessages = false; 1294 mWifiNative.setSupplicantLogLevel("INFO"); 1295 } 1296 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1297 mWifiAutoJoinController.enableVerboseLogging(verbose); 1298 mWifiMonitor.enableVerboseLogging(verbose); 1299 mWifiNative.enableVerboseLogging(verbose); 1300 mWifiConfigStore.enableVerboseLogging(verbose); 1301 mSupplicantStateTracker.enableVerboseLogging(verbose); 1302 } 1303 1304 public void setHalBasedAutojoinOffload(int enabled) { 1305 // Shoult be used for debug only, triggered form developper settings 1306 // enabling HAl based PNO dynamically is not safe and not a normal operation 1307 mHalBasedPnoEnableInDevSettings = enabled > 0; 1308 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1309 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1310 sendMessage(CMD_DISCONNECT); 1311 } 1312 1313 int getHalBasedAutojoinOffload() { 1314 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1315 } 1316 1317 boolean useHalBasedAutoJoinOffload() { 1318 // all three settings need to be true: 1319 // - developper settings switch 1320 // - driver support 1321 // - config option 1322 return mHalBasedPnoEnableInDevSettings 1323 && mHalBasedPnoDriverSupported 1324 && mWifiConfigStore.enableHalBasedPno.get(); 1325 } 1326 1327 boolean allowFullBandScanAndAssociated() { 1328 1329 if (!getEnableAutoJoinWhenAssociated()) { 1330 if (DBG) { 1331 Log.e(TAG, "allowFullBandScanAndAssociated: " 1332 + " enableAutoJoinWhenAssociated : disallow"); 1333 } 1334 return false; 1335 } 1336 1337 if (mWifiInfo.txSuccessRate > 1338 mWifiConfigStore.maxTxPacketForFullScans 1339 || mWifiInfo.rxSuccessRate > 1340 mWifiConfigStore.maxRxPacketForFullScans) { 1341 if (DBG) { 1342 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1343 + mWifiInfo.txSuccessRate + " rx " 1344 + mWifiInfo.rxSuccessRate 1345 + " allow scan with traffic " + getAllowScansWithTraffic()); 1346 } 1347 // Too much traffic at the interface, hence no full band scan 1348 if (getAllowScansWithTraffic() == 0) { 1349 return false; 1350 } 1351 } 1352 1353 if (getCurrentState() != mConnectedState) { 1354 if (DBG) { 1355 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1356 } 1357 return false; 1358 } 1359 1360 return true; 1361 } 1362 1363 long mLastScanPermissionUpdate = 0; 1364 boolean mConnectedModeGScanOffloadStarted = false; 1365 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1366 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1367 // we want to throttle the GScan Stop->Start transition 1368 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1369 void updateAssociatedScanPermission() { 1370 1371 if (useHalBasedAutoJoinOffload()) { 1372 boolean allowed = allowFullBandScanAndAssociated(); 1373 1374 long now = System.currentTimeMillis(); 1375 if (mConnectedModeGScanOffloadStarted && !allowed) { 1376 if (DBG) { 1377 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1378 } 1379 stopPnoOffload(); 1380 stopGScan(" useHalBasedAutoJoinOffload"); 1381 } 1382 if (!mConnectedModeGScanOffloadStarted && allowed) { 1383 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1384 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1385 // to look for 5GHz BSSIDs and better networks 1386 if (DBG) { 1387 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1388 } 1389 startGScanConnectedModeOffload("updatePermission " 1390 + (now - mLastScanPermissionUpdate) + "ms"); 1391 mLastScanPermissionUpdate = now; 1392 } 1393 } 1394 } 1395 } 1396 1397 private int mAggressiveHandover = 0; 1398 1399 int getAggressiveHandover() { 1400 return mAggressiveHandover; 1401 } 1402 1403 void enableAggressiveHandover(int enabled) { 1404 mAggressiveHandover = enabled; 1405 } 1406 1407 public void clearANQPCache() { 1408 mWifiConfigStore.trimANQPCache(true); 1409 } 1410 1411 public void setAllowScansWithTraffic(int enabled) { 1412 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1413 } 1414 1415 public int getAllowScansWithTraffic() { 1416 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1417 } 1418 1419 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1420 boolean old_state = getEnableAutoJoinWhenAssociated(); 1421 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1422 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1423 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1424 null); 1425 } 1426 return true; 1427 } 1428 1429 public boolean getEnableAutoJoinWhenAssociated() { 1430 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1431 } 1432 /* 1433 * 1434 * Framework scan control 1435 */ 1436 1437 private boolean mAlarmEnabled = false; 1438 1439 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1440 1441 private void setScanAlarm(boolean enabled) { 1442 if (PDBG) { 1443 String state; 1444 if (enabled) state = "enabled"; else state = "disabled"; 1445 logd("setScanAlarm " + state 1446 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1447 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1448 } 1449 if (mBackgroundScanSupported == false) { 1450 // Scan alarm is only used for background scans if they are not 1451 // offloaded to the wifi chipset, hence enable the scan alarm 1452 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1453 enabled = true; 1454 } 1455 1456 if (enabled == mAlarmEnabled) return; 1457 if (enabled) { 1458 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1459 /* going to wake up the host processor to look for access points */ 1460 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1461 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1462 mScanIntent); 1463 mAlarmEnabled = true; 1464 } else { 1465 mAlarmManager.cancel(mScanIntent); 1466 mAlarmEnabled = false; 1467 } 1468 } 1469 1470 private void cancelDelayedScan() { 1471 mDelayedScanCounter.incrementAndGet(); 1472 } 1473 1474 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1475 ScanSettings settings, WorkSource workSource) { 1476 1477 if (counter != mDelayedScanCounter.get()) { 1478 return false; 1479 } 1480 if (restart) 1481 startDelayedScan(milli, settings, workSource); 1482 return true; 1483 } 1484 1485 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1486 if (milli <= 0) return; 1487 /** 1488 * The cases where the scan alarm should be run are : 1489 * - DisconnectedState && screenOn => used delayed timer 1490 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1491 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1492 * - ConnectedState && screenOn => used delayed timer 1493 */ 1494 1495 mDelayedScanCounter.incrementAndGet(); 1496 if (mScreenOn && 1497 (getCurrentState() == mDisconnectedState 1498 || getCurrentState() == mConnectedState)) { 1499 Bundle bundle = new Bundle(); 1500 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1501 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1502 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1503 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1504 mDelayedScanCounter.get(), bundle, milli); 1505 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1506 } else if (mBackgroundScanSupported == false 1507 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1508 setScanAlarm(true); 1509 if (DBG) logd("startDelayedScan start scan alarm -> " 1510 + mDelayedScanCounter + " milli " + milli); 1511 } else { 1512 if (DBG) logd("startDelayedScan unhandled -> " 1513 + mDelayedScanCounter + " milli " + milli); 1514 } 1515 } 1516 1517 private boolean setRandomMacOui() { 1518 String oui = mContext.getResources().getString( 1519 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1520 String[] ouiParts = oui.split("-"); 1521 byte[] ouiBytes = new byte[3]; 1522 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1523 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1524 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1525 1526 logd("Setting OUI to " + oui); 1527 return mWifiNative.setScanningMacOui(ouiBytes); 1528 } 1529 1530 /** 1531 * ****************************************************** 1532 * Methods exposed for public use 1533 * ****************************************************** 1534 */ 1535 1536 public Messenger getMessenger() { 1537 return new Messenger(getHandler()); 1538 } 1539 1540 public WifiMonitor getWifiMonitor() { 1541 return mWifiMonitor; 1542 } 1543 1544 /** 1545 * TODO: doc 1546 */ 1547 public boolean syncPingSupplicant(AsyncChannel channel) { 1548 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1549 boolean result = (resultMsg.arg1 != FAILURE); 1550 resultMsg.recycle(); 1551 return result; 1552 } 1553 1554 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1555 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1556 List<WifiChannel> list = null; 1557 if (resultMsg.obj != null) { 1558 list = new ArrayList<WifiChannel>(); 1559 String freqs = (String) resultMsg.obj; 1560 String[] lines = freqs.split("\n"); 1561 for (String line : lines) 1562 if (line.contains("MHz")) { 1563 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1564 WifiChannel c = new WifiChannel(); 1565 String[] prop = line.split(" "); 1566 if (prop.length < 5) continue; 1567 try { 1568 c.channelNum = Integer.parseInt(prop[1]); 1569 c.freqMHz = Integer.parseInt(prop[3]); 1570 } catch (NumberFormatException e) { 1571 } 1572 c.isDFS = line.contains("(DFS)"); 1573 list.add(c); 1574 } else if (line.contains("Mode[B] Channels:")) { 1575 // B channels are the same as G channels, skipped 1576 break; 1577 } 1578 } 1579 resultMsg.recycle(); 1580 return (list != null && list.size() > 0) ? list : null; 1581 } 1582 1583 /** 1584 * When settings allowing making use of untrusted networks change, trigger a scan 1585 * so as to kick of autojoin. 1586 */ 1587 public void startScanForUntrustedSettingChange() { 1588 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1589 } 1590 1591 /** 1592 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1593 * given to callingUid. 1594 * 1595 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1596 * workSource is specified. 1597 * @param workSource If not null, blame is given to workSource. 1598 * @param settings Scan settings, see {@link ScanSettings}. 1599 */ 1600 public void startScan(int callingUid, int scanCounter, 1601 ScanSettings settings, WorkSource workSource) { 1602 Bundle bundle = new Bundle(); 1603 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1604 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1605 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1606 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1607 } 1608 1609 // called from BroadcastListener 1610 1611 /** 1612 * Start reading new scan data 1613 * Data comes in as: 1614 * "scancount=5\n" 1615 * "nextcount=5\n" 1616 * "apcount=3\n" 1617 * "trunc\n" (optional) 1618 * "bssid=...\n" 1619 * "ssid=...\n" 1620 * "freq=...\n" (in Mhz) 1621 * "level=...\n" 1622 * "dist=...\n" (in cm) 1623 * "distsd=...\n" (standard deviation, in cm) 1624 * "====" 1625 * "bssid=...\n" 1626 * etc 1627 * "====" 1628 * "bssid=...\n" 1629 * etc 1630 * "%%%%" 1631 * "apcount=2\n" 1632 * "bssid=...\n" 1633 * etc 1634 * "%%%% 1635 * etc 1636 * "----" 1637 */ 1638 private final static boolean DEBUG_PARSE = false; 1639 1640 private long mDisconnectedTimeStamp = 0; 1641 1642 public long getDisconnectedTimeMilli() { 1643 if (getCurrentState() == mDisconnectedState 1644 && mDisconnectedTimeStamp != 0) { 1645 long now_ms = System.currentTimeMillis(); 1646 return now_ms - mDisconnectedTimeStamp; 1647 } 1648 return 0; 1649 } 1650 1651 // Keeping track of scan requests 1652 private long lastStartScanTimeStamp = 0; 1653 private long lastScanDuration = 0; 1654 // Last connect attempt is used to prevent scan requests: 1655 // - for a period of 10 seconds after attempting to connect 1656 private long lastConnectAttempt = 0; 1657 private String lastScanFreqs = null; 1658 1659 // For debugging, keep track of last message status handling 1660 // TODO, find an equivalent mechanism as part of parent class 1661 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1662 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1663 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1664 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1665 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1666 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1667 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1668 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1669 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1670 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1671 1672 private int messageHandlingStatus = 0; 1673 1674 //TODO: this is used only to track connection attempts, however the link state and packet per 1675 //TODO: second logic should be folded into that 1676 private boolean checkOrDeferScanAllowed(Message msg) { 1677 long now = System.currentTimeMillis(); 1678 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1679 Message dmsg = Message.obtain(msg); 1680 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1681 return false; 1682 } 1683 return true; 1684 } 1685 1686 private int mOnTime = 0; 1687 private int mTxTime = 0; 1688 private int mRxTime = 0; 1689 private int mOnTimeStartScan = 0; 1690 private int mTxTimeStartScan = 0; 1691 private int mRxTimeStartScan = 0; 1692 private int mOnTimeScan = 0; 1693 private int mTxTimeScan = 0; 1694 private int mRxTimeScan = 0; 1695 private int mOnTimeThisScan = 0; 1696 private int mTxTimeThisScan = 0; 1697 private int mRxTimeThisScan = 0; 1698 1699 private int mOnTimeScreenStateChange = 0; 1700 private int mOnTimeAtLastReport = 0; 1701 private long lastOntimeReportTimeStamp = 0; 1702 private long lastScreenStateChangeTimeStamp = 0; 1703 private int mOnTimeLastReport = 0; 1704 private int mTxTimeLastReport = 0; 1705 private int mRxTimeLastReport = 0; 1706 1707 private long lastLinkLayerStatsUpdate = 0; 1708 1709 String reportOnTime() { 1710 long now = System.currentTimeMillis(); 1711 StringBuilder sb = new StringBuilder(); 1712 // Report stats since last report 1713 int on = mOnTime - mOnTimeLastReport; 1714 mOnTimeLastReport = mOnTime; 1715 int tx = mTxTime - mTxTimeLastReport; 1716 mTxTimeLastReport = mTxTime; 1717 int rx = mRxTime - mRxTimeLastReport; 1718 mRxTimeLastReport = mRxTime; 1719 int period = (int) (now - lastOntimeReportTimeStamp); 1720 lastOntimeReportTimeStamp = now; 1721 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1722 // Report stats since Screen State Changed 1723 on = mOnTime - mOnTimeScreenStateChange; 1724 period = (int) (now - lastScreenStateChangeTimeStamp); 1725 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1726 return sb.toString(); 1727 } 1728 1729 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1730 WifiLinkLayerStats stats = null; 1731 if (mWifiLinkLayerStatsSupported > 0) { 1732 String name = "wlan0"; 1733 stats = mWifiNative.getWifiLinkLayerStats(name); 1734 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1735 mWifiLinkLayerStatsSupported -= 1; 1736 } else if (stats != null) { 1737 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1738 mOnTime = stats.on_time; 1739 mTxTime = stats.tx_time; 1740 mRxTime = stats.rx_time; 1741 mRunningBeaconCount = stats.beacon_rx; 1742 } 1743 } 1744 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1745 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1746 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1747 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1748 } else { 1749 mWifiInfo.updatePacketRates(stats); 1750 } 1751 if (useHalBasedAutoJoinOffload()) { 1752 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1753 } 1754 return stats; 1755 } 1756 1757 void startRadioScanStats() { 1758 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1759 if (stats != null) { 1760 mOnTimeStartScan = stats.on_time; 1761 mTxTimeStartScan = stats.tx_time; 1762 mRxTimeStartScan = stats.rx_time; 1763 mOnTime = stats.on_time; 1764 mTxTime = stats.tx_time; 1765 mRxTime = stats.rx_time; 1766 } 1767 } 1768 1769 void closeRadioScanStats() { 1770 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1771 if (stats != null) { 1772 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1773 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1774 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1775 mOnTimeScan += mOnTimeThisScan; 1776 mTxTimeScan += mTxTimeThisScan; 1777 mRxTimeScan += mRxTimeThisScan; 1778 } 1779 } 1780 1781 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1782 private void noteScanStart(int callingUid, WorkSource workSource) { 1783 long now = System.currentTimeMillis(); 1784 lastStartScanTimeStamp = now; 1785 lastScanDuration = 0; 1786 if (DBG) { 1787 String ts = String.format("[%,d ms]", now); 1788 if (workSource != null) { 1789 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1790 + " uid " + Integer.toString(callingUid)); 1791 } else { 1792 if (DBG) logd(ts + " noteScanstart no scan source" 1793 + " uid " + Integer.toString(callingUid)); 1794 } 1795 } 1796 startRadioScanStats(); 1797 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1798 && callingUid != SCAN_ALARM_SOURCE) 1799 || workSource != null)) { 1800 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1801 1802 WorkSource batteryWorkSource = mScanWorkSource; 1803 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1804 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1805 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1806 } 1807 1808 try { 1809 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1810 } catch (RemoteException e) { 1811 log(e.toString()); 1812 } 1813 } 1814 } 1815 1816 private void noteScanEnd() { 1817 long now = System.currentTimeMillis(); 1818 if (lastStartScanTimeStamp != 0) { 1819 lastScanDuration = now - lastStartScanTimeStamp; 1820 } 1821 lastStartScanTimeStamp = 0; 1822 if (DBG) { 1823 String ts = String.format("[%,d ms]", now); 1824 if (mScanWorkSource != null) 1825 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 1826 + " onTime=" + mOnTimeThisScan); 1827 else 1828 logd(ts + " noteScanEnd no scan source" 1829 + " onTime=" + mOnTimeThisScan); 1830 } 1831 if (mScanWorkSource != null) { 1832 try { 1833 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1834 } catch (RemoteException e) { 1835 log(e.toString()); 1836 } finally { 1837 mScanWorkSource = null; 1838 } 1839 } 1840 } 1841 1842 private void handleScanRequest(int type, Message message) { 1843 ScanSettings settings = null; 1844 WorkSource workSource = null; 1845 1846 // unbundle parameters 1847 Bundle bundle = (Bundle) message.obj; 1848 1849 if (bundle != null) { 1850 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1851 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1852 } 1853 1854 // parse scan settings 1855 String freqs = null; 1856 if (settings != null && settings.channelSet != null) { 1857 StringBuilder sb = new StringBuilder(); 1858 boolean first = true; 1859 for (WifiChannel channel : settings.channelSet) { 1860 if (!first) sb.append(','); 1861 else first = false; 1862 sb.append(channel.freqMHz); 1863 } 1864 freqs = sb.toString(); 1865 } 1866 1867 // call wifi native to start the scan 1868 if (startScanNative(type, freqs)) { 1869 // only count battery consumption if scan request is accepted 1870 noteScanStart(message.arg1, workSource); 1871 // a full scan covers everything, clearing scan request buffer 1872 if (freqs == null) 1873 mBufferedScanMsg.clear(); 1874 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1875 if (workSource != null) { 1876 // External worksource was passed along the scan request, 1877 // hence always send a broadcast 1878 mSendScanResultsBroadcast = true; 1879 } 1880 return; 1881 } 1882 1883 // if reach here, scan request is rejected 1884 1885 if (!mIsScanOngoing) { 1886 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1887 1888 // discard this request and pop up the next one 1889 if (mBufferedScanMsg.size() > 0) { 1890 sendMessage(mBufferedScanMsg.remove()); 1891 } 1892 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1893 } else if (!mIsFullScanOngoing) { 1894 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1895 // buffer the scan request to make sure specified channels will be scanned eventually 1896 if (freqs == null) 1897 mBufferedScanMsg.clear(); 1898 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1899 Message msg = obtainMessage(CMD_START_SCAN, 1900 message.arg1, message.arg2, bundle); 1901 mBufferedScanMsg.add(msg); 1902 } else { 1903 // if too many requests in buffer, combine them into a single full scan 1904 bundle = new Bundle(); 1905 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1906 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1907 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1908 mBufferedScanMsg.clear(); 1909 mBufferedScanMsg.add(msg); 1910 } 1911 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1912 } else { 1913 // mIsScanOngoing and mIsFullScanOngoing 1914 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1915 } 1916 } 1917 1918 1919 /** 1920 * return true iff scan request is accepted 1921 */ 1922 private boolean startScanNative(int type, String freqs) { 1923 if (mWifiNative.scan(type, freqs)) { 1924 mIsScanOngoing = true; 1925 mIsFullScanOngoing = (freqs == null); 1926 lastScanFreqs = freqs; 1927 return true; 1928 } 1929 return false; 1930 } 1931 1932 /** 1933 * TODO: doc 1934 */ 1935 public void setSupplicantRunning(boolean enable) { 1936 if (enable) { 1937 sendMessage(CMD_START_SUPPLICANT); 1938 } else { 1939 sendMessage(CMD_STOP_SUPPLICANT); 1940 } 1941 } 1942 1943 /** 1944 * TODO: doc 1945 */ 1946 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1947 if (enable) { 1948 sendMessage(CMD_START_AP, wifiConfig); 1949 } else { 1950 sendMessage(CMD_STOP_AP); 1951 } 1952 } 1953 1954 public void setWifiApConfiguration(WifiConfiguration config) { 1955 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1956 } 1957 1958 public WifiConfiguration syncGetWifiApConfiguration() { 1959 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1960 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1961 resultMsg.recycle(); 1962 return ret; 1963 } 1964 1965 /** 1966 * TODO: doc 1967 */ 1968 public int syncGetWifiState() { 1969 return mWifiState.get(); 1970 } 1971 1972 /** 1973 * TODO: doc 1974 */ 1975 public String syncGetWifiStateByName() { 1976 switch (mWifiState.get()) { 1977 case WIFI_STATE_DISABLING: 1978 return "disabling"; 1979 case WIFI_STATE_DISABLED: 1980 return "disabled"; 1981 case WIFI_STATE_ENABLING: 1982 return "enabling"; 1983 case WIFI_STATE_ENABLED: 1984 return "enabled"; 1985 case WIFI_STATE_UNKNOWN: 1986 return "unknown state"; 1987 default: 1988 return "[invalid state]"; 1989 } 1990 } 1991 1992 /** 1993 * TODO: doc 1994 */ 1995 public int syncGetWifiApState() { 1996 return mWifiApState.get(); 1997 } 1998 1999 /** 2000 * TODO: doc 2001 */ 2002 public String syncGetWifiApStateByName() { 2003 switch (mWifiApState.get()) { 2004 case WIFI_AP_STATE_DISABLING: 2005 return "disabling"; 2006 case WIFI_AP_STATE_DISABLED: 2007 return "disabled"; 2008 case WIFI_AP_STATE_ENABLING: 2009 return "enabling"; 2010 case WIFI_AP_STATE_ENABLED: 2011 return "enabled"; 2012 case WIFI_AP_STATE_FAILED: 2013 return "failed"; 2014 default: 2015 return "[invalid state]"; 2016 } 2017 } 2018 2019 /** 2020 * Get status information for the current connection, if any. 2021 * 2022 * @return a {@link WifiInfo} object containing information about the current connection 2023 */ 2024 public WifiInfo syncRequestConnectionInfo() { 2025 return getWiFiInfoForUid(Binder.getCallingUid()); 2026 } 2027 2028 public DhcpResults syncGetDhcpResults() { 2029 synchronized (mDhcpResultsLock) { 2030 return new DhcpResults(mDhcpResults); 2031 } 2032 } 2033 2034 /** 2035 * TODO: doc 2036 */ 2037 public void setDriverStart(boolean enable) { 2038 if (enable) { 2039 sendMessage(CMD_START_DRIVER); 2040 } else { 2041 sendMessage(CMD_STOP_DRIVER); 2042 } 2043 } 2044 2045 /** 2046 * TODO: doc 2047 */ 2048 public void setOperationalMode(int mode) { 2049 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2050 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2051 } 2052 2053 /** 2054 * TODO: doc 2055 */ 2056 public List<ScanResult> syncGetScanResultsList() { 2057 synchronized (mScanResultCache) { 2058 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2059 for (ScanDetail result : mScanResults) { 2060 scanList.add(new ScanResult(result.getScanResult())); 2061 } 2062 return scanList; 2063 } 2064 } 2065 2066 public void disableEphemeralNetwork(String SSID) { 2067 if (SSID != null) { 2068 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2069 } 2070 } 2071 2072 /** 2073 * Get unsynchronized pointer to scan result list 2074 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2075 */ 2076 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2077 return mScanResults; 2078 } 2079 2080 /** 2081 * Disconnect from Access Point 2082 */ 2083 public void disconnectCommand() { 2084 sendMessage(CMD_DISCONNECT); 2085 } 2086 2087 public void disconnectCommand(int uid, int reason) { 2088 sendMessage(CMD_DISCONNECT, uid, reason); 2089 } 2090 2091 /** 2092 * Initiate a reconnection to AP 2093 */ 2094 public void reconnectCommand() { 2095 sendMessage(CMD_RECONNECT); 2096 } 2097 2098 /** 2099 * Initiate a re-association to AP 2100 */ 2101 public void reassociateCommand() { 2102 sendMessage(CMD_REASSOCIATE); 2103 } 2104 2105 /** 2106 * Reload networks and then reconnect; helps load correct data for TLS networks 2107 */ 2108 2109 public void reloadTlsNetworksAndReconnect() { 2110 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2111 } 2112 2113 /** 2114 * Add a network synchronously 2115 * 2116 * @return network id of the new network 2117 */ 2118 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2119 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2120 int result = resultMsg.arg1; 2121 resultMsg.recycle(); 2122 return result; 2123 } 2124 2125 /** 2126 * Get configured networks synchronously 2127 * 2128 * @param channel 2129 * @return 2130 */ 2131 2132 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2133 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2134 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2135 resultMsg.recycle(); 2136 return result; 2137 } 2138 2139 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2140 Message resultMsg = channel.sendMessageSynchronously( 2141 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2142 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2143 resultMsg.recycle(); 2144 return result; 2145 } 2146 2147 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2148 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2149 return (WifiConfiguration) resultMsg.obj; 2150 } 2151 2152 /** 2153 * Get connection statistics synchronously 2154 * 2155 * @param channel 2156 * @return 2157 */ 2158 2159 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2160 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2161 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2162 resultMsg.recycle(); 2163 return result; 2164 } 2165 2166 /** 2167 * Get adaptors synchronously 2168 */ 2169 2170 public int syncGetSupportedFeatures(AsyncChannel channel) { 2171 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2172 int supportedFeatureSet = resultMsg.arg1; 2173 resultMsg.recycle(); 2174 return supportedFeatureSet; 2175 } 2176 2177 /** 2178 * Get link layers stats for adapter synchronously 2179 */ 2180 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2181 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2182 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2183 resultMsg.recycle(); 2184 return result; 2185 } 2186 2187 /** 2188 * Delete a network 2189 * 2190 * @param networkId id of the network to be removed 2191 */ 2192 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2193 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2194 boolean result = (resultMsg.arg1 != FAILURE); 2195 resultMsg.recycle(); 2196 return result; 2197 } 2198 2199 /** 2200 * Enable a network 2201 * 2202 * @param netId network id of the network 2203 * @param disableOthers true, if all other networks have to be disabled 2204 * @return {@code true} if the operation succeeds, {@code false} otherwise 2205 */ 2206 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2207 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2208 disableOthers ? 1 : 0); 2209 boolean result = (resultMsg.arg1 != FAILURE); 2210 resultMsg.recycle(); 2211 return result; 2212 } 2213 2214 /** 2215 * Disable a network 2216 * 2217 * @param netId network id of the network 2218 * @return {@code true} if the operation succeeds, {@code false} otherwise 2219 */ 2220 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2221 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2222 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2223 resultMsg.recycle(); 2224 return result; 2225 } 2226 2227 /** 2228 * Retrieves a WPS-NFC configuration token for the specified network 2229 * 2230 * @return a hex string representation of the WPS-NFC configuration token 2231 */ 2232 public String syncGetWpsNfcConfigurationToken(int netId) { 2233 return mWifiNative.getNfcWpsConfigurationToken(netId); 2234 } 2235 2236 void enableBackgroundScan(boolean enable) { 2237 if (enable) { 2238 mWifiConfigStore.enableAllNetworks(); 2239 } 2240 boolean ret = mWifiNative.enableBackgroundScan(enable); 2241 if (ret) { 2242 mLegacyPnoEnabled = enable; 2243 } else { 2244 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2245 } 2246 } 2247 2248 /** 2249 * Blacklist a BSSID. This will avoid the AP if there are 2250 * alternate APs to connect 2251 * 2252 * @param bssid BSSID of the network 2253 */ 2254 public void addToBlacklist(String bssid) { 2255 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2256 } 2257 2258 /** 2259 * Clear the blacklist list 2260 */ 2261 public void clearBlacklist() { 2262 sendMessage(CMD_CLEAR_BLACKLIST); 2263 } 2264 2265 public void enableRssiPolling(boolean enabled) { 2266 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2267 } 2268 2269 public void enableAllNetworks() { 2270 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2271 } 2272 2273 /** 2274 * Start filtering Multicast v4 packets 2275 */ 2276 public void startFilteringMulticastV4Packets() { 2277 mFilteringMulticastV4Packets.set(true); 2278 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2279 } 2280 2281 /** 2282 * Stop filtering Multicast v4 packets 2283 */ 2284 public void stopFilteringMulticastV4Packets() { 2285 mFilteringMulticastV4Packets.set(false); 2286 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2287 } 2288 2289 /** 2290 * Start filtering Multicast v4 packets 2291 */ 2292 public void startFilteringMulticastV6Packets() { 2293 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2294 } 2295 2296 /** 2297 * Stop filtering Multicast v4 packets 2298 */ 2299 public void stopFilteringMulticastV6Packets() { 2300 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2301 } 2302 2303 /** 2304 * Set high performance mode of operation. 2305 * Enabling would set active power mode and disable suspend optimizations; 2306 * disabling would set auto power mode and enable suspend optimizations 2307 * 2308 * @param enable true if enable, false otherwise 2309 */ 2310 public void setHighPerfModeEnabled(boolean enable) { 2311 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2312 } 2313 2314 /** 2315 * Set the country code 2316 * 2317 * @param countryCode following ISO 3166 format 2318 * @param persist {@code true} if the setting should be remembered. 2319 */ 2320 public synchronized void setCountryCode(String countryCode, boolean persist) { 2321 // If it's a good country code, apply after the current 2322 // wifi connection is terminated; ignore resetting of code 2323 // for now (it is unclear what the chipset should do when 2324 // country code is reset) 2325 2326 if (TextUtils.isEmpty(countryCode)) { 2327 log("Ignoring resetting of country code"); 2328 } else { 2329 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2330 // else only when the new country code is different from the current one to set 2331 int countryCodeSequence = mCountryCodeSequence.get(); 2332 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2333 2334 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2335 mSetCountryCode = countryCode; 2336 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2337 countryCode); 2338 } 2339 2340 if (persist) { 2341 Settings.Global.putString(mContext.getContentResolver(), 2342 Settings.Global.WIFI_COUNTRY_CODE, 2343 countryCode); 2344 } 2345 } 2346 } 2347 2348 /** 2349 * Get Network object of current wifi network 2350 * @return Network object of current wifi network 2351 */ 2352 public Network getCurrentNetwork() { 2353 if (mNetworkAgent != null) { 2354 return new Network(mNetworkAgent.netId); 2355 } else { 2356 return null; 2357 } 2358 } 2359 2360 /** 2361 * Get the country code 2362 * 2363 * @param countryCode following ISO 3166 format 2364 */ 2365 public String getCountryCode() { 2366 return mSetCountryCode; 2367 } 2368 2369 2370 /** 2371 * Set the operational frequency band 2372 * 2373 * @param band 2374 * @param persist {@code true} if the setting should be remembered. 2375 */ 2376 public void setFrequencyBand(int band, boolean persist) { 2377 if (persist) { 2378 Settings.Global.putInt(mContext.getContentResolver(), 2379 Settings.Global.WIFI_FREQUENCY_BAND, 2380 band); 2381 } 2382 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2383 } 2384 2385 /** 2386 * Enable TDLS for a specific MAC address 2387 */ 2388 public void enableTdls(String remoteMacAddress, boolean enable) { 2389 int enabler = enable ? 1 : 0; 2390 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2391 } 2392 2393 /** 2394 * Returns the operational frequency band 2395 */ 2396 public int getFrequencyBand() { 2397 return mFrequencyBand.get(); 2398 } 2399 2400 /** 2401 * Returns the wifi configuration file 2402 */ 2403 public String getConfigFile() { 2404 return mWifiConfigStore.getConfigFile(); 2405 } 2406 2407 /** 2408 * Send a message indicating bluetooth adapter connection state changed 2409 */ 2410 public void sendBluetoothAdapterStateChange(int state) { 2411 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2412 } 2413 2414 /** 2415 * Send a message indicating a package has been uninstalled. 2416 */ 2417 public void removeAppConfigs(String packageName, int uid) { 2418 // Build partial AppInfo manually - package may not exist in database any more 2419 ApplicationInfo ai = new ApplicationInfo(); 2420 ai.packageName = packageName; 2421 ai.uid = uid; 2422 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2423 } 2424 2425 /** 2426 * Send a message indicating a user has been removed. 2427 */ 2428 public void removeUserConfigs(int userId) { 2429 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2430 } 2431 2432 /** 2433 * Save configuration on supplicant 2434 * 2435 * @return {@code true} if the operation succeeds, {@code false} otherwise 2436 * <p/> 2437 * TODO: deprecate this 2438 */ 2439 public boolean syncSaveConfig(AsyncChannel channel) { 2440 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2441 boolean result = (resultMsg.arg1 != FAILURE); 2442 resultMsg.recycle(); 2443 return result; 2444 } 2445 2446 public void updateBatteryWorkSource(WorkSource newSource) { 2447 synchronized (mRunningWifiUids) { 2448 try { 2449 if (newSource != null) { 2450 mRunningWifiUids.set(newSource); 2451 } 2452 if (mIsRunning) { 2453 if (mReportedRunning) { 2454 // If the work source has changed since last time, need 2455 // to remove old work from battery stats. 2456 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2457 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2458 mRunningWifiUids); 2459 mLastRunningWifiUids.set(mRunningWifiUids); 2460 } 2461 } else { 2462 // Now being started, report it. 2463 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2464 mLastRunningWifiUids.set(mRunningWifiUids); 2465 mReportedRunning = true; 2466 } 2467 } else { 2468 if (mReportedRunning) { 2469 // Last reported we were running, time to stop. 2470 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2471 mLastRunningWifiUids.clear(); 2472 mReportedRunning = false; 2473 } 2474 } 2475 mWakeLock.setWorkSource(newSource); 2476 } catch (RemoteException ignore) { 2477 } 2478 } 2479 } 2480 2481 @Override 2482 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2483 super.dump(fd, pw, args); 2484 mSupplicantStateTracker.dump(fd, pw, args); 2485 pw.println("mLinkProperties " + mLinkProperties); 2486 pw.println("mWifiInfo " + mWifiInfo); 2487 pw.println("mDhcpResults " + mDhcpResults); 2488 pw.println("mNetworkInfo " + mNetworkInfo); 2489 pw.println("mLastSignalLevel " + mLastSignalLevel); 2490 pw.println("mLastBssid " + mLastBssid); 2491 pw.println("mLastNetworkId " + mLastNetworkId); 2492 pw.println("mOperationalMode " + mOperationalMode); 2493 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2494 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2495 pw.println("Supplicant status " + mWifiNative.status(true)); 2496 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2497 pw.println("mSetCountryCode " + mSetCountryCode); 2498 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2499 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2500 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2501 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2502 pw.println("SSID whitelist :" ); 2503 for (int i=0; i < mWhiteListedSsids.length; i++) { 2504 pw.println(" " + mWhiteListedSsids[i]); 2505 } 2506 } 2507 mNetworkFactory.dump(fd, pw, args); 2508 mUntrustedNetworkFactory.dump(fd, pw, args); 2509 pw.println(); 2510 mWifiConfigStore.dump(fd, pw, args); 2511 pw.println(); 2512 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2513 mWifiLogger.dump(fd, pw, args); 2514 } 2515 2516 /** 2517 * ****************************************************** 2518 * Internal private functions 2519 * ****************************************************** 2520 */ 2521 2522 private void logStateAndMessage(Message message, String state) { 2523 messageHandlingStatus = 0; 2524 if (mLogMessages) { 2525 //long now = SystemClock.elapsedRealtimeNanos(); 2526 //String ts = String.format("[%,d us]", now/1000); 2527 2528 logd(" " + state + " " + getLogRecString(message)); 2529 } 2530 } 2531 2532 /** 2533 * helper, prints the milli time since boot wi and w/o suspended time 2534 */ 2535 String printTime() { 2536 StringBuilder sb = new StringBuilder(); 2537 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2538 sb.append("/").append(SystemClock.elapsedRealtime()); 2539 return sb.toString(); 2540 } 2541 2542 /** 2543 * Return the additional string to be logged by LogRec, default 2544 * 2545 * @param msg that was processed 2546 * @return information to be logged as a String 2547 */ 2548 protected String getLogRecString(Message msg) { 2549 WifiConfiguration config; 2550 Long now; 2551 String report; 2552 String key; 2553 StringBuilder sb = new StringBuilder(); 2554 if (mScreenOn) { 2555 sb.append("!"); 2556 } 2557 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2558 sb.append("(").append(messageHandlingStatus).append(")"); 2559 } 2560 sb.append(smToString(msg)); 2561 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2562 sb.append(" uid=" + msg.sendingUid); 2563 } 2564 sb.append(" ").append(printTime()); 2565 switch (msg.what) { 2566 case CMD_STARTED_GSCAN_DBG: 2567 case CMD_STARTED_PNO_DBG: 2568 sb.append(" "); 2569 sb.append(Integer.toString(msg.arg1)); 2570 sb.append(" "); 2571 sb.append(Integer.toString(msg.arg2)); 2572 if (msg.obj != null) { 2573 sb.append(" " + (String)msg.obj); 2574 } 2575 break; 2576 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2577 sb.append(" "); 2578 sb.append(Integer.toString(msg.arg1)); 2579 sb.append(" "); 2580 sb.append(Integer.toString(msg.arg2)); 2581 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2582 if (msg.obj != null) { 2583 sb.append(" " + (String)msg.obj); 2584 } 2585 break; 2586 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2587 sb.append(" "); 2588 sb.append(Integer.toString(msg.arg1)); 2589 sb.append(" "); 2590 sb.append(Integer.toString(msg.arg2)); 2591 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2592 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2593 sb.append(" autojoinAllowed="); 2594 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2595 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2596 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2597 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2598 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2599 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2600 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2601 break; 2602 case CMD_PNO_NETWORK_FOUND: 2603 sb.append(" "); 2604 sb.append(Integer.toString(msg.arg1)); 2605 sb.append(" "); 2606 sb.append(Integer.toString(msg.arg2)); 2607 if (msg.obj != null) { 2608 ScanResult[] results = (ScanResult[])msg.obj; 2609 for (int i = 0; i < results.length; i++) { 2610 sb.append(" ").append(results[i].SSID).append(" "); 2611 sb.append(results[i].frequency); 2612 sb.append(" ").append(results[i].level); 2613 } 2614 } 2615 break; 2616 case CMD_START_SCAN: 2617 now = System.currentTimeMillis(); 2618 sb.append(" "); 2619 sb.append(Integer.toString(msg.arg1)); 2620 sb.append(" "); 2621 sb.append(Integer.toString(msg.arg2)); 2622 sb.append(" ic="); 2623 sb.append(Integer.toString(sScanAlarmIntentCount)); 2624 if (msg.obj != null) { 2625 Bundle bundle = (Bundle) msg.obj; 2626 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2627 if (request != 0) { 2628 sb.append(" proc(ms):").append(now - request); 2629 } 2630 } 2631 if (mIsScanOngoing) sb.append(" onGoing"); 2632 if (mIsFullScanOngoing) sb.append(" full"); 2633 if (lastStartScanTimeStamp != 0) { 2634 sb.append(" started:").append(lastStartScanTimeStamp); 2635 sb.append(",").append(now - lastStartScanTimeStamp); 2636 } 2637 if (lastScanDuration != 0) { 2638 sb.append(" dur:").append(lastScanDuration); 2639 } 2640 sb.append(" cnt=").append(mDelayedScanCounter); 2641 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2642 sb.append(" f=").append(mWifiInfo.getFrequency()); 2643 sb.append(" sc=").append(mWifiInfo.score); 2644 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2645 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2646 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2647 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2648 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2649 if (lastScanFreqs != null) { 2650 sb.append(" list=").append(lastScanFreqs); 2651 } else { 2652 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2653 } 2654 report = reportOnTime(); 2655 if (report != null) { 2656 sb.append(" ").append(report); 2657 } 2658 break; 2659 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2660 sb.append(" "); 2661 sb.append(Integer.toString(msg.arg1)); 2662 sb.append(" "); 2663 sb.append(Integer.toString(msg.arg2)); 2664 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2665 if (stateChangeResult != null) { 2666 sb.append(stateChangeResult.toString()); 2667 } 2668 break; 2669 case WifiManager.SAVE_NETWORK: 2670 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2671 sb.append(" "); 2672 sb.append(Integer.toString(msg.arg1)); 2673 sb.append(" "); 2674 sb.append(Integer.toString(msg.arg2)); 2675 if (lastSavedConfigurationAttempt != null) { 2676 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2677 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2678 if (lastSavedConfigurationAttempt.hiddenSSID) { 2679 sb.append(" hidden"); 2680 } 2681 if (lastSavedConfigurationAttempt.preSharedKey != null 2682 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2683 sb.append(" hasPSK"); 2684 } 2685 if (lastSavedConfigurationAttempt.ephemeral) { 2686 sb.append(" ephemeral"); 2687 } 2688 if (lastSavedConfigurationAttempt.selfAdded) { 2689 sb.append(" selfAdded"); 2690 } 2691 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2692 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2693 } 2694 break; 2695 case WifiManager.FORGET_NETWORK: 2696 sb.append(" "); 2697 sb.append(Integer.toString(msg.arg1)); 2698 sb.append(" "); 2699 sb.append(Integer.toString(msg.arg2)); 2700 if (lastForgetConfigurationAttempt != null) { 2701 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2702 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2703 if (lastForgetConfigurationAttempt.hiddenSSID) { 2704 sb.append(" hidden"); 2705 } 2706 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2707 sb.append(" hasPSK"); 2708 } 2709 if (lastForgetConfigurationAttempt.ephemeral) { 2710 sb.append(" ephemeral"); 2711 } 2712 if (lastForgetConfigurationAttempt.selfAdded) { 2713 sb.append(" selfAdded"); 2714 } 2715 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2716 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2717 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2718 } 2719 break; 2720 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2721 sb.append(" "); 2722 sb.append(Integer.toString(msg.arg1)); 2723 sb.append(" "); 2724 sb.append(Integer.toString(msg.arg2)); 2725 String bssid = (String) msg.obj; 2726 if (bssid != null && bssid.length() > 0) { 2727 sb.append(" "); 2728 sb.append(bssid); 2729 } 2730 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2731 break; 2732 case WifiMonitor.SCAN_RESULTS_EVENT: 2733 sb.append(" "); 2734 sb.append(Integer.toString(msg.arg1)); 2735 sb.append(" "); 2736 sb.append(Integer.toString(msg.arg2)); 2737 if (mScanResults != null) { 2738 sb.append(" found="); 2739 sb.append(mScanResults.size()); 2740 } 2741 sb.append(" known=").append(mNumScanResultsKnown); 2742 sb.append(" got=").append(mNumScanResultsReturned); 2743 if (lastScanDuration != 0) { 2744 sb.append(" dur:").append(lastScanDuration); 2745 } 2746 if (mOnTime != 0) { 2747 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2748 sb.append(",").append(mOnTime); 2749 } 2750 if (mTxTime != 0) { 2751 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2752 sb.append(",").append(mTxTime); 2753 } 2754 if (mRxTime != 0) { 2755 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2756 sb.append(",").append(mRxTime); 2757 } 2758 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2759 sb.append(String.format(" con=%d", mConnectionRequests)); 2760 key = mWifiConfigStore.getLastSelectedConfiguration(); 2761 if (key != null) { 2762 sb.append(" last=").append(key); 2763 } 2764 break; 2765 case WifiMonitor.SCAN_FAILED_EVENT: 2766 break; 2767 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2768 sb.append(" "); 2769 sb.append(Integer.toString(msg.arg1)); 2770 sb.append(" "); 2771 sb.append(Integer.toString(msg.arg2)); 2772 sb.append(" ").append(mLastBssid); 2773 sb.append(" nid=").append(mLastNetworkId); 2774 config = getCurrentWifiConfiguration(); 2775 if (config != null) { 2776 sb.append(" ").append(config.configKey()); 2777 } 2778 key = mWifiConfigStore.getLastSelectedConfiguration(); 2779 if (key != null) { 2780 sb.append(" last=").append(key); 2781 } 2782 break; 2783 case CMD_TARGET_BSSID: 2784 case CMD_ASSOCIATED_BSSID: 2785 sb.append(" "); 2786 sb.append(Integer.toString(msg.arg1)); 2787 sb.append(" "); 2788 sb.append(Integer.toString(msg.arg2)); 2789 if (msg.obj != null) { 2790 sb.append(" BSSID=").append((String) msg.obj); 2791 } 2792 if (mTargetRoamBSSID != null) { 2793 sb.append(" Target=").append(mTargetRoamBSSID); 2794 } 2795 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2796 break; 2797 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2798 if (msg.obj != null) { 2799 sb.append(" ").append((String) msg.obj); 2800 } 2801 sb.append(" nid=").append(msg.arg1); 2802 sb.append(" reason=").append(msg.arg2); 2803 if (mLastBssid != null) { 2804 sb.append(" lastbssid=").append(mLastBssid); 2805 } 2806 if (mWifiInfo.getFrequency() != -1) { 2807 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2808 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2809 } 2810 if (linkDebouncing) { 2811 sb.append(" debounce"); 2812 } 2813 break; 2814 case WifiMonitor.SSID_TEMP_DISABLED: 2815 case WifiMonitor.SSID_REENABLED: 2816 sb.append(" nid=").append(msg.arg1); 2817 if (msg.obj != null) { 2818 sb.append(" ").append((String) msg.obj); 2819 } 2820 config = getCurrentWifiConfiguration(); 2821 if (config != null) { 2822 sb.append(" cur=").append(config.configKey()); 2823 sb.append(" ajst=").append(config.autoJoinStatus); 2824 if (config.selfAdded) { 2825 sb.append(" selfAdded"); 2826 } 2827 if (config.status != 0) { 2828 sb.append(" st=").append(config.status); 2829 sb.append(" rs=").append(config.disableReason); 2830 } 2831 if (config.lastConnected != 0) { 2832 now = System.currentTimeMillis(); 2833 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2834 } 2835 if (mLastBssid != null) { 2836 sb.append(" lastbssid=").append(mLastBssid); 2837 } 2838 if (mWifiInfo.getFrequency() != -1) { 2839 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2840 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2841 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2842 } 2843 } 2844 break; 2845 case CMD_RSSI_POLL: 2846 case CMD_UNWANTED_NETWORK: 2847 case WifiManager.RSSI_PKTCNT_FETCH: 2848 sb.append(" "); 2849 sb.append(Integer.toString(msg.arg1)); 2850 sb.append(" "); 2851 sb.append(Integer.toString(msg.arg2)); 2852 if (mWifiInfo.getSSID() != null) 2853 if (mWifiInfo.getSSID() != null) 2854 sb.append(" ").append(mWifiInfo.getSSID()); 2855 if (mWifiInfo.getBSSID() != null) 2856 sb.append(" ").append(mWifiInfo.getBSSID()); 2857 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2858 sb.append(" f=").append(mWifiInfo.getFrequency()); 2859 sb.append(" sc=").append(mWifiInfo.score); 2860 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2861 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2862 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2863 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2864 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2865 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2866 report = reportOnTime(); 2867 if (report != null) { 2868 sb.append(" ").append(report); 2869 } 2870 if (wifiScoringReport != null) { 2871 sb.append(wifiScoringReport); 2872 } 2873 if (mConnectedModeGScanOffloadStarted) { 2874 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2875 } else { 2876 sb.append(" offload-stopped"); 2877 } 2878 break; 2879 case CMD_AUTO_CONNECT: 2880 case WifiManager.CONNECT_NETWORK: 2881 sb.append(" "); 2882 sb.append(Integer.toString(msg.arg1)); 2883 sb.append(" "); 2884 sb.append(Integer.toString(msg.arg2)); 2885 config = (WifiConfiguration) msg.obj; 2886 if (config != null) { 2887 sb.append(" ").append(config.configKey()); 2888 if (config.visibility != null) { 2889 sb.append(" ").append(config.visibility.toString()); 2890 } 2891 } 2892 if (mTargetRoamBSSID != null) { 2893 sb.append(" ").append(mTargetRoamBSSID); 2894 } 2895 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2896 config = getCurrentWifiConfiguration(); 2897 if (config != null) { 2898 sb.append(config.configKey()); 2899 if (config.visibility != null) { 2900 sb.append(" ").append(config.visibility.toString()); 2901 } 2902 } 2903 break; 2904 case CMD_AUTO_ROAM: 2905 sb.append(" "); 2906 sb.append(Integer.toString(msg.arg1)); 2907 sb.append(" "); 2908 sb.append(Integer.toString(msg.arg2)); 2909 ScanResult result = (ScanResult) msg.obj; 2910 if (result != null) { 2911 now = System.currentTimeMillis(); 2912 sb.append(" bssid=").append(result.BSSID); 2913 sb.append(" rssi=").append(result.level); 2914 sb.append(" freq=").append(result.frequency); 2915 if (result.seen > 0 && result.seen < now) { 2916 sb.append(" seen=").append(now - result.seen); 2917 } else { 2918 // Somehow the timestamp for this scan result is inconsistent 2919 sb.append(" !seen=").append(result.seen); 2920 } 2921 } 2922 if (mTargetRoamBSSID != null) { 2923 sb.append(" ").append(mTargetRoamBSSID); 2924 } 2925 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2926 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2927 break; 2928 case CMD_ADD_OR_UPDATE_NETWORK: 2929 sb.append(" "); 2930 sb.append(Integer.toString(msg.arg1)); 2931 sb.append(" "); 2932 sb.append(Integer.toString(msg.arg2)); 2933 if (msg.obj != null) { 2934 config = (WifiConfiguration) msg.obj; 2935 sb.append(" ").append(config.configKey()); 2936 sb.append(" prio=").append(config.priority); 2937 sb.append(" status=").append(config.status); 2938 if (config.BSSID != null) { 2939 sb.append(" ").append(config.BSSID); 2940 } 2941 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2942 if (curConfig != null) { 2943 if (curConfig.configKey().equals(config.configKey())) { 2944 sb.append(" is current"); 2945 } else { 2946 sb.append(" current=").append(curConfig.configKey()); 2947 sb.append(" prio=").append(curConfig.priority); 2948 sb.append(" status=").append(curConfig.status); 2949 } 2950 } 2951 } 2952 break; 2953 case WifiManager.DISABLE_NETWORK: 2954 case CMD_ENABLE_NETWORK: 2955 sb.append(" "); 2956 sb.append(Integer.toString(msg.arg1)); 2957 sb.append(" "); 2958 sb.append(Integer.toString(msg.arg2)); 2959 key = mWifiConfigStore.getLastSelectedConfiguration(); 2960 if (key != null) { 2961 sb.append(" last=").append(key); 2962 } 2963 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2964 if (config != null && (key == null || !config.configKey().equals(key))) { 2965 sb.append(" target=").append(key); 2966 } 2967 break; 2968 case CMD_GET_CONFIGURED_NETWORKS: 2969 sb.append(" "); 2970 sb.append(Integer.toString(msg.arg1)); 2971 sb.append(" "); 2972 sb.append(Integer.toString(msg.arg2)); 2973 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2974 break; 2975 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2976 sb.append(" "); 2977 sb.append(Integer.toString(msg.arg1)); 2978 sb.append(" "); 2979 sb.append(Integer.toString(msg.arg2)); 2980 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2981 sb.append(",").append(mWifiInfo.txBad); 2982 sb.append(",").append(mWifiInfo.txRetries); 2983 break; 2984 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2985 sb.append(" "); 2986 sb.append(Integer.toString(msg.arg1)); 2987 sb.append(" "); 2988 sb.append(Integer.toString(msg.arg2)); 2989 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2990 sb.append(" OK "); 2991 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2992 sb.append(" FAIL "); 2993 } 2994 if (mLinkProperties != null) { 2995 if (mLinkProperties.hasIPv4Address()) { 2996 sb.append(" v4"); 2997 } 2998 if (mLinkProperties.hasGlobalIPv6Address()) { 2999 sb.append(" v6"); 3000 } 3001 if (mLinkProperties.hasIPv4DefaultRoute()) { 3002 sb.append(" v4r"); 3003 } 3004 if (mLinkProperties.hasIPv6DefaultRoute()) { 3005 sb.append(" v6r"); 3006 } 3007 if (mLinkProperties.hasIPv4DnsServer()) { 3008 sb.append(" v4dns"); 3009 } 3010 if (mLinkProperties.hasIPv6DnsServer()) { 3011 sb.append(" v6dns"); 3012 } 3013 } 3014 break; 3015 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3016 sb.append(" "); 3017 sb.append(Integer.toString(msg.arg1)); 3018 sb.append(" "); 3019 sb.append(Integer.toString(msg.arg2)); 3020 if (msg.obj != null) { 3021 NetworkInfo info = (NetworkInfo) msg.obj; 3022 NetworkInfo.State state = info.getState(); 3023 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3024 if (state != null) { 3025 sb.append(" st=").append(state); 3026 } 3027 if (detailedState != null) { 3028 sb.append("/").append(detailedState); 3029 } 3030 } 3031 break; 3032 case CMD_IP_CONFIGURATION_LOST: 3033 int count = -1; 3034 WifiConfiguration c = getCurrentWifiConfiguration(); 3035 if (c != null) count = c.numIpConfigFailures; 3036 sb.append(" "); 3037 sb.append(Integer.toString(msg.arg1)); 3038 sb.append(" "); 3039 sb.append(Integer.toString(msg.arg2)); 3040 sb.append(" failures: "); 3041 sb.append(Integer.toString(count)); 3042 sb.append("/"); 3043 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3044 if (mWifiInfo.getBSSID() != null) { 3045 sb.append(" ").append(mWifiInfo.getBSSID()); 3046 } 3047 if (c != null) { 3048 ScanDetailCache scanDetailCache = 3049 mWifiConfigStore.getScanDetailCache(c); 3050 if (scanDetailCache != null) { 3051 for (ScanDetail sd : scanDetailCache.values()) { 3052 ScanResult r = sd.getScanResult(); 3053 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3054 sb.append(" ipfail=").append(r.numIpConfigFailures); 3055 sb.append(",st=").append(r.autoJoinStatus); 3056 } 3057 } 3058 } 3059 sb.append(" -> ajst=").append(c.autoJoinStatus); 3060 sb.append(" ").append(c.disableReason); 3061 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3062 sb.append(",").append(mWifiInfo.txBad); 3063 sb.append(",").append(mWifiInfo.txRetries); 3064 } 3065 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3066 break; 3067 case CMD_UPDATE_LINKPROPERTIES: 3068 sb.append(" "); 3069 sb.append(Integer.toString(msg.arg1)); 3070 sb.append(" "); 3071 sb.append(Integer.toString(msg.arg2)); 3072 if (mLinkProperties != null) { 3073 if (mLinkProperties.hasIPv4Address()) { 3074 sb.append(" v4"); 3075 } 3076 if (mLinkProperties.hasGlobalIPv6Address()) { 3077 sb.append(" v6"); 3078 } 3079 if (mLinkProperties.hasIPv4DefaultRoute()) { 3080 sb.append(" v4r"); 3081 } 3082 if (mLinkProperties.hasIPv6DefaultRoute()) { 3083 sb.append(" v6r"); 3084 } 3085 if (mLinkProperties.hasIPv4DnsServer()) { 3086 sb.append(" v4dns"); 3087 } 3088 if (mLinkProperties.hasIPv6DnsServer()) { 3089 sb.append(" v6dns"); 3090 } 3091 } 3092 break; 3093 case CMD_IP_REACHABILITY_LOST: 3094 if (msg.obj != null) { 3095 sb.append(" ").append((String) msg.obj); 3096 } 3097 break; 3098 case CMD_SET_COUNTRY_CODE: 3099 sb.append(" "); 3100 sb.append(Integer.toString(msg.arg1)); 3101 sb.append(" "); 3102 sb.append(Integer.toString(msg.arg2)); 3103 if (msg.obj != null) { 3104 sb.append(" ").append((String) msg.obj); 3105 } 3106 break; 3107 case CMD_ROAM_WATCHDOG_TIMER: 3108 sb.append(" "); 3109 sb.append(Integer.toString(msg.arg1)); 3110 sb.append(" "); 3111 sb.append(Integer.toString(msg.arg2)); 3112 sb.append(" cur=").append(roamWatchdogCount); 3113 break; 3114 case CMD_DISCONNECTING_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(disconnectingWatchdogCount); 3120 break; 3121 default: 3122 sb.append(" "); 3123 sb.append(Integer.toString(msg.arg1)); 3124 sb.append(" "); 3125 sb.append(Integer.toString(msg.arg2)); 3126 break; 3127 } 3128 3129 return sb.toString(); 3130 } 3131 3132 private void stopPnoOffload() { 3133 3134 // clear the PNO list 3135 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3136 Log.e(TAG, "Failed to stop pno"); 3137 } 3138 3139 } 3140 3141 3142 private boolean configureSsidWhiteList() { 3143 3144 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3145 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3146 return true; 3147 } 3148 3149 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3150 loge("configureSsidWhiteList couldnt program SSID list, size " 3151 + mWhiteListedSsids.length); 3152 return false; 3153 } 3154 3155 logd("configureSsidWhiteList success"); 3156 return true; 3157 } 3158 3159 // In associated more, lazy roam will be looking for 5GHz roam candidate 3160 private boolean configureLazyRoam() { 3161 boolean status; 3162 if (!useHalBasedAutoJoinOffload()) return false; 3163 3164 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3165 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3166 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3167 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3168 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3169 params.A_band_max_boost = 65; 3170 params.lazy_roam_hysteresis = 25; 3171 params.alert_roam_rssi_trigger = -75; 3172 3173 if (DBG) { 3174 Log.e(TAG, "configureLazyRoam " + params.toString()); 3175 } 3176 3177 if (!WifiNative.setLazyRoam(true, params)) { 3178 3179 Log.e(TAG, "configureLazyRoam couldnt program params"); 3180 3181 return false; 3182 } 3183 if (DBG) { 3184 Log.e(TAG, "configureLazyRoam success"); 3185 } 3186 return true; 3187 } 3188 3189 // In associated more, lazy roam will be looking for 5GHz roam candidate 3190 private boolean stopLazyRoam() { 3191 boolean status; 3192 if (!useHalBasedAutoJoinOffload()) return false; 3193 if (DBG) { 3194 Log.e(TAG, "stopLazyRoam"); 3195 } 3196 return WifiNative.setLazyRoam(false, null); 3197 } 3198 3199 private boolean startGScanConnectedModeOffload(String reason) { 3200 if (DBG) { 3201 if (reason == null) { 3202 reason = ""; 3203 } 3204 logd("startGScanConnectedModeOffload " + reason); 3205 } 3206 stopGScan("startGScanConnectedModeOffload " + reason); 3207 if (!mScreenOn) return false; 3208 3209 if (USE_PAUSE_SCANS) { 3210 mWifiNative.pauseScan(); 3211 } 3212 mPnoEnabled = configurePno(); 3213 if (mPnoEnabled == false) { 3214 if (USE_PAUSE_SCANS) { 3215 mWifiNative.restartScan(); 3216 } 3217 return false; 3218 } 3219 mLazyRoamEnabled = configureLazyRoam(); 3220 if (mLazyRoamEnabled == false) { 3221 if (USE_PAUSE_SCANS) { 3222 mWifiNative.restartScan(); 3223 } 3224 return false; 3225 } 3226 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3227 configureSsidWhiteList(); 3228 } 3229 if (!startConnectedGScan(reason)) { 3230 if (USE_PAUSE_SCANS) { 3231 mWifiNative.restartScan(); 3232 } 3233 return false; 3234 } 3235 if (USE_PAUSE_SCANS) { 3236 mWifiNative.restartScan(); 3237 } 3238 mConnectedModeGScanOffloadStarted = true; 3239 if (DBG) { 3240 logd("startGScanConnectedModeOffload success"); 3241 } 3242 return true; 3243 } 3244 3245 private boolean startGScanDisconnectedModeOffload(String reason) { 3246 if (DBG) { 3247 logd("startGScanDisconnectedModeOffload " + reason); 3248 } 3249 stopGScan("startGScanDisconnectedModeOffload " + reason); 3250 if (USE_PAUSE_SCANS) { 3251 mWifiNative.pauseScan(); 3252 } 3253 mPnoEnabled = configurePno(); 3254 if (mPnoEnabled == false) { 3255 if (USE_PAUSE_SCANS) { 3256 mWifiNative.restartScan(); 3257 } 3258 return false; 3259 } 3260 if (!startDisconnectedGScan(reason)) { 3261 if (USE_PAUSE_SCANS) { 3262 mWifiNative.restartScan(); 3263 } 3264 return false; 3265 } 3266 if (USE_PAUSE_SCANS) { 3267 mWifiNative.restartScan(); 3268 } 3269 return true; 3270 } 3271 3272 private boolean configurePno() { 3273 if (!useHalBasedAutoJoinOffload()) return false; 3274 3275 if (mWifiScanner == null) { 3276 log("configurePno: mWifiScanner is null "); 3277 return true; 3278 } 3279 3280 List<WifiNative.WifiPnoNetwork> llist 3281 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3282 if (llist == null || llist.size() == 0) { 3283 stopPnoOffload(); 3284 log("configurePno: empty PNO list "); 3285 return true; 3286 } 3287 if (DBG) { 3288 log("configurePno: got llist size " + llist.size()); 3289 } 3290 3291 // first program the network we want to look for thru the pno API 3292 WifiNative.WifiPnoNetwork list[] 3293 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3294 3295 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3296 Log.e(TAG, "Failed to set pno, length = " + list.length); 3297 return false; 3298 } 3299 3300 if (true) { 3301 StringBuilder sb = new StringBuilder(); 3302 for (WifiNative.WifiPnoNetwork network : list) { 3303 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3304 sb.append(" flags="); 3305 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3306 sb.append("] "); 3307 3308 } 3309 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3310 } 3311 return true; 3312 } 3313 3314 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3315 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3316 3317 private boolean startConnectedGScan(String reason) { 3318 // send a scan background request so as to kick firmware 3319 // 5GHz roaming and autojoin 3320 // We do this only if screen is on 3321 WifiScanner.ScanSettings settings; 3322 3323 if (mPnoEnabled || mLazyRoamEnabled) { 3324 settings = new WifiScanner.ScanSettings(); 3325 settings.band = WifiScanner.WIFI_BAND_BOTH; 3326 long now = System.currentTimeMillis(); 3327 3328 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3329 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3330 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3331 } else { 3332 mGScanStartTimeMilli = now; 3333 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3334 // if we start offload with short interval, then reconfigure it after a given 3335 // duration of time so as to reduce the scan frequency 3336 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3337 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3338 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3339 (long)delay); 3340 mRestartAutoJoinOffloadCounter++; 3341 } 3342 mGScanPeriodMilli = settings.periodInMs; 3343 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3344 if (DBG) { 3345 log("startConnectedScan: settings band="+ settings.band 3346 + " period=" + settings.periodInMs); 3347 } 3348 3349 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3350 if (true) { 3351 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3352 } 3353 } 3354 return true; 3355 } 3356 3357 private boolean startDisconnectedGScan(String reason) { 3358 // send a scan background request so as to kick firmware 3359 // PNO 3360 // This is done in both screen On and screen Off modes 3361 WifiScanner.ScanSettings settings; 3362 3363 if (mWifiScanner == null) { 3364 log("startDisconnectedGScan: no wifi scanner"); 3365 return false; 3366 } 3367 3368 if (mPnoEnabled || mLazyRoamEnabled) { 3369 settings = new WifiScanner.ScanSettings(); 3370 settings.band = WifiScanner.WIFI_BAND_BOTH; 3371 long now = System.currentTimeMillis(); 3372 3373 3374 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3375 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3376 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3377 } else { 3378 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3379 mGScanStartTimeMilli = now; 3380 // if we start offload with short interval, then reconfigure it after a given 3381 // duration of time so as to reduce the scan frequency 3382 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3383 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3384 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3385 (long)delay); 3386 mRestartAutoJoinOffloadCounter++; 3387 } 3388 mGScanPeriodMilli = settings.periodInMs; 3389 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3390 if (DBG) { 3391 log("startDisconnectedScan: settings band="+ settings.band 3392 + " period=" + settings.periodInMs); 3393 } 3394 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3395 if (true) { 3396 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3397 } 3398 } 3399 return true; 3400 } 3401 3402 private boolean stopGScan(String reason) { 3403 mGScanStartTimeMilli = 0; 3404 mGScanPeriodMilli = 0; 3405 if (mWifiScanner != null) { 3406 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3407 } 3408 mConnectedModeGScanOffloadStarted = false; 3409 if (true) { 3410 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3411 } 3412 return true; 3413 } 3414 3415 private void handleScreenStateChanged(boolean screenOn) { 3416 mScreenOn = screenOn; 3417 if (PDBG) { 3418 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3419 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3420 + " state " + getCurrentState().getName() 3421 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3422 } 3423 enableRssiPolling(screenOn); 3424 if (screenOn) enableAllNetworks(); 3425 if (mUserWantsSuspendOpt.get()) { 3426 if (screenOn) { 3427 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3428 } else { 3429 // Allow 2s for suspend optimizations to be set 3430 mSuspendWakeLock.acquire(2000); 3431 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3432 } 3433 } 3434 mScreenBroadcastReceived.set(true); 3435 3436 getWifiLinkLayerStats(false); 3437 mOnTimeScreenStateChange = mOnTime; 3438 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3439 3440 cancelDelayedScan(); 3441 3442 if (screenOn) { 3443 enableBackgroundScan(false); 3444 setScanAlarm(false); 3445 clearBlacklist(); 3446 3447 fullBandConnectedTimeIntervalMilli 3448 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3449 // In either Disconnectedstate or ConnectedState, 3450 // start the scan alarm so as to enable autojoin 3451 if (getCurrentState() == mConnectedState 3452 && allowFullBandScanAndAssociated()) { 3453 if (useHalBasedAutoJoinOffload()) { 3454 startGScanConnectedModeOffload("screenOnConnected"); 3455 } else { 3456 // Scan after 500ms 3457 startDelayedScan(500, null, null); 3458 } 3459 } else if (getCurrentState() == mDisconnectedState) { 3460 if (useHalBasedAutoJoinOffload()) { 3461 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3462 } else { 3463 // Scan after 500ms 3464 startDelayedScan(500, null, null); 3465 } 3466 } 3467 } else { 3468 if (getCurrentState() == mDisconnectedState) { 3469 // Screen Off and Disconnected and chipset doesn't support scan offload 3470 // => start scan alarm 3471 // Screen Off and Disconnected and chipset does support scan offload 3472 // => will use scan offload (i.e. background scan) 3473 if (useHalBasedAutoJoinOffload()) { 3474 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3475 } else { 3476 if (!mBackgroundScanSupported) { 3477 setScanAlarm(true); 3478 } else { 3479 if (!mIsScanOngoing) { 3480 enableBackgroundScan(true); 3481 } 3482 } 3483 } 3484 } else { 3485 enableBackgroundScan(false); 3486 if (useHalBasedAutoJoinOffload()) { 3487 // don't try stop Gscan if it is not enabled 3488 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3489 } 3490 } 3491 } 3492 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3493 3494 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3495 } 3496 3497 private void checkAndSetConnectivityInstance() { 3498 if (mCm == null) { 3499 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3500 } 3501 } 3502 3503 private boolean startTethering(ArrayList<String> available) { 3504 3505 boolean wifiAvailable = false; 3506 3507 checkAndSetConnectivityInstance(); 3508 3509 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3510 3511 for (String intf : available) { 3512 for (String regex : wifiRegexs) { 3513 if (intf.matches(regex)) { 3514 3515 InterfaceConfiguration ifcg = null; 3516 try { 3517 ifcg = mNwService.getInterfaceConfig(intf); 3518 if (ifcg != null) { 3519 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3520 ifcg.setLinkAddress(new LinkAddress( 3521 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3522 ifcg.setInterfaceUp(); 3523 3524 mNwService.setInterfaceConfig(intf, ifcg); 3525 } 3526 } catch (Exception e) { 3527 loge("Error configuring interface " + intf + ", :" + e); 3528 return false; 3529 } 3530 3531 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3532 loge("Error tethering on " + intf); 3533 return false; 3534 } 3535 mTetherInterfaceName = intf; 3536 return true; 3537 } 3538 } 3539 } 3540 // We found no interfaces to tether 3541 return false; 3542 } 3543 3544 private void stopTethering() { 3545 3546 checkAndSetConnectivityInstance(); 3547 3548 /* Clear the interface config to allow dhcp correctly configure new 3549 ip settings */ 3550 InterfaceConfiguration ifcg = null; 3551 try { 3552 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3553 if (ifcg != null) { 3554 ifcg.setLinkAddress( 3555 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3556 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3557 } 3558 } catch (Exception e) { 3559 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3560 } 3561 3562 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3563 loge("Untether initiate failed!"); 3564 } 3565 } 3566 3567 private boolean isWifiTethered(ArrayList<String> active) { 3568 3569 checkAndSetConnectivityInstance(); 3570 3571 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3572 for (String intf : active) { 3573 for (String regex : wifiRegexs) { 3574 if (intf.matches(regex)) { 3575 return true; 3576 } 3577 } 3578 } 3579 // We found no interfaces that are tethered 3580 return false; 3581 } 3582 3583 /** 3584 * Set the country code from the system setting value, if any. 3585 */ 3586 private void setCountryCode() { 3587 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3588 Settings.Global.WIFI_COUNTRY_CODE); 3589 if (countryCode != null && !countryCode.isEmpty()) { 3590 setCountryCode(countryCode, false); 3591 } else { 3592 //use driver default 3593 } 3594 } 3595 3596 /** 3597 * Set the frequency band from the system setting value, if any. 3598 */ 3599 private void setFrequencyBand() { 3600 int band = Settings.Global.getInt(mContext.getContentResolver(), 3601 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3602 setFrequencyBand(band, false); 3603 } 3604 3605 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3606 if (DBG) { 3607 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3608 + " -want " + mUserWantsSuspendOpt.get() 3609 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3610 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3611 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3612 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3613 } 3614 //mWifiNative.setSuspendOptimizations(enabled); 3615 3616 if (enabled) { 3617 mSuspendOptNeedsDisabled &= ~reason; 3618 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3619 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3620 if (DBG) { 3621 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3622 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3623 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3624 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3625 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3626 } 3627 mWifiNative.setSuspendOptimizations(true); 3628 } 3629 } else { 3630 mSuspendOptNeedsDisabled |= reason; 3631 mWifiNative.setSuspendOptimizations(false); 3632 } 3633 } 3634 3635 private void setSuspendOptimizations(int reason, boolean enabled) { 3636 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3637 if (enabled) { 3638 mSuspendOptNeedsDisabled &= ~reason; 3639 } else { 3640 mSuspendOptNeedsDisabled |= reason; 3641 } 3642 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3643 } 3644 3645 private void setWifiState(int wifiState) { 3646 final int previousWifiState = mWifiState.get(); 3647 3648 try { 3649 if (wifiState == WIFI_STATE_ENABLED) { 3650 mBatteryStats.noteWifiOn(); 3651 } else if (wifiState == WIFI_STATE_DISABLED) { 3652 mBatteryStats.noteWifiOff(); 3653 } 3654 } catch (RemoteException e) { 3655 loge("Failed to note battery stats in wifi"); 3656 } 3657 3658 mWifiState.set(wifiState); 3659 3660 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3661 3662 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3663 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3664 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3665 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3666 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3667 } 3668 3669 private void setWifiApState(int wifiApState, int reason) { 3670 final int previousWifiApState = mWifiApState.get(); 3671 3672 try { 3673 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3674 mBatteryStats.noteWifiOn(); 3675 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3676 mBatteryStats.noteWifiOff(); 3677 } 3678 } catch (RemoteException e) { 3679 loge("Failed to note battery stats in wifi"); 3680 } 3681 3682 // Update state 3683 mWifiApState.set(wifiApState); 3684 3685 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3686 3687 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3688 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3689 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3690 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3691 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3692 //only set reason number when softAP start failed 3693 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3694 } 3695 3696 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3697 } 3698 3699 /* 3700 void ageOutScanResults(int age) { 3701 synchronized(mScanResultCache) { 3702 // Trim mScanResults, which prevent WifiStateMachine to return 3703 // obsolete scan results to queriers 3704 long now = System.CurrentTimeMillis(); 3705 for (int i = 0; i < mScanResults.size(); i++) { 3706 ScanResult result = mScanResults.get(i); 3707 if ((result.seen > now || (now - result.seen) > age)) { 3708 mScanResults.remove(i); 3709 } 3710 } 3711 } 3712 }*/ 3713 3714 private static final String IE_STR = "ie="; 3715 private static final String ID_STR = "id="; 3716 private static final String BSSID_STR = "bssid="; 3717 private static final String FREQ_STR = "freq="; 3718 private static final String LEVEL_STR = "level="; 3719 private static final String TSF_STR = "tsf="; 3720 private static final String FLAGS_STR = "flags="; 3721 private static final String SSID_STR = "ssid="; 3722 private static final String DELIMITER_STR = "===="; 3723 private static final String END_STR = "####"; 3724 3725 int emptyScanResultCount = 0; 3726 3727 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3728 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3729 3730 /** 3731 * Format: 3732 * <p/> 3733 * id=1 3734 * bssid=68:7f:76:d7:1a:6e 3735 * freq=2412 3736 * level=-44 3737 * tsf=1344626243700342 3738 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3739 * ssid=zfdy 3740 * ==== 3741 * id=2 3742 * bssid=68:5f:74:d7:1a:6f 3743 * freq=5180 3744 * level=-73 3745 * tsf=1344626243700373 3746 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3747 * ssid=zuby 3748 * ==== 3749 */ 3750 private void setScanResults() { 3751 mNumScanResultsKnown = 0; 3752 mNumScanResultsReturned = 0; 3753 String bssid = ""; 3754 int level = 0; 3755 int freq = 0; 3756 long tsf = 0; 3757 String flags = ""; 3758 WifiSsid wifiSsid = null; 3759 String scanResults; 3760 String tmpResults; 3761 StringBuffer scanResultsBuf = new StringBuffer(); 3762 int sid = 0; 3763 3764 while (true) { 3765 tmpResults = mWifiNative.scanResults(sid); 3766 if (TextUtils.isEmpty(tmpResults)) break; 3767 scanResultsBuf.append(tmpResults); 3768 scanResultsBuf.append("\n"); 3769 String[] lines = tmpResults.split("\n"); 3770 sid = -1; 3771 for (int i = lines.length - 1; i >= 0; i--) { 3772 if (lines[i].startsWith(END_STR)) { 3773 break; 3774 } else if (lines[i].startsWith(ID_STR)) { 3775 try { 3776 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3777 } catch (NumberFormatException e) { 3778 // Nothing to do 3779 } 3780 break; 3781 } 3782 } 3783 if (sid == -1) break; 3784 } 3785 3786 // Age out scan results, we return all scan results found in the last 12 seconds, 3787 // and NOT all scan results since last scan. 3788 // ageOutScanResults(12000); 3789 3790 scanResults = scanResultsBuf.toString(); 3791 if (TextUtils.isEmpty(scanResults)) { 3792 emptyScanResultCount++; 3793 if (emptyScanResultCount > 10) { 3794 // If we got too many empty scan results, the current scan cache is stale, 3795 // hence clear it. 3796 mScanResults = new ArrayList<>(); 3797 } 3798 return; 3799 } 3800 3801 emptyScanResultCount = 0; 3802 3803 mWifiConfigStore.trimANQPCache(false); 3804 3805 // note that all these splits and substrings keep references to the original 3806 // huge string buffer while the amount we really want is generally pretty small 3807 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3808 synchronized (mScanResultCache) { 3809 mScanResults = new ArrayList<>(); 3810 String[] lines = scanResults.split("\n"); 3811 final int bssidStrLen = BSSID_STR.length(); 3812 final int flagLen = FLAGS_STR.length(); 3813 String infoElements = null; 3814 List<String> anqpLines = null; 3815 3816 for (String line : lines) { 3817 if (line.startsWith(BSSID_STR)) { 3818 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3819 } else if (line.startsWith(FREQ_STR)) { 3820 try { 3821 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3822 } catch (NumberFormatException e) { 3823 freq = 0; 3824 } 3825 } else if (line.startsWith(LEVEL_STR)) { 3826 try { 3827 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3828 /* some implementations avoid negative values by adding 256 3829 * so we need to adjust for that here. 3830 */ 3831 if (level > 0) level -= 256; 3832 } catch (NumberFormatException e) { 3833 level = 0; 3834 } 3835 } else if (line.startsWith(TSF_STR)) { 3836 try { 3837 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3838 } catch (NumberFormatException e) { 3839 tsf = 0; 3840 } 3841 } else if (line.startsWith(FLAGS_STR)) { 3842 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3843 } else if (line.startsWith(SSID_STR)) { 3844 wifiSsid = WifiSsid.createFromAsciiEncoded( 3845 line.substring(SSID_STR.length())); 3846 } else if (line.startsWith(IE_STR)) { 3847 infoElements = line; 3848 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3849 if (anqpLines == null) { 3850 anqpLines = new ArrayList<>(); 3851 } 3852 anqpLines.add(line); 3853 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3854 if (bssid != null) { 3855 try { 3856 NetworkDetail networkDetail = 3857 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3858 3859 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3860 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3861 logd(String.format( 3862 "Inconsistent SSID on BSSID '%s': '%s' vs '%s': %s", 3863 bssid, xssid, networkDetail.getSSID(), infoElements)); 3864 } 3865 3866 if (networkDetail.hasInterworking()) { 3867 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3868 } 3869 3870 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3871 if (scanDetail != null) { 3872 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3873 flags, freq, tsf); 3874 } else { 3875 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3876 flags, level, freq, tsf); 3877 mScanResultCache.put(networkDetail, scanDetail); 3878 } 3879 3880 mNumScanResultsReturned++; // Keep track of how many scan results we got 3881 // as part of this scan's processing 3882 mScanResults.add(scanDetail); 3883 } catch (IllegalArgumentException iae) { 3884 Log.d(TAG, "Failed to parse information elements: " + iae); 3885 } 3886 } 3887 bssid = null; 3888 level = 0; 3889 freq = 0; 3890 tsf = 0; 3891 flags = ""; 3892 wifiSsid = null; 3893 infoElements = null; 3894 anqpLines = null; 3895 } 3896 } 3897 } 3898 3899 boolean attemptAutoJoin = true; 3900 SupplicantState state = mWifiInfo.getSupplicantState(); 3901 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3902 if (getCurrentState() == mRoamingState 3903 || getCurrentState() == mObtainingIpState 3904 || getCurrentState() == mScanModeState 3905 || getCurrentState() == mDisconnectingState 3906 || (getCurrentState() == mConnectedState 3907 && !getEnableAutoJoinWhenAssociated()) 3908 || linkDebouncing 3909 || state == SupplicantState.ASSOCIATING 3910 || state == SupplicantState.AUTHENTICATING 3911 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3912 || state == SupplicantState.GROUP_HANDSHAKE 3913 || (/* keep autojoin enabled if user has manually selected a wifi network, 3914 so as to make sure we reliably remain connected to this network */ 3915 mConnectionRequests == 0 && selection == null)) { 3916 // Dont attempt auto-joining again while we are already attempting to join 3917 // and/or obtaining Ip address 3918 attemptAutoJoin = false; 3919 } 3920 if (DBG) { 3921 if (selection == null) { 3922 selection = "<none>"; 3923 } 3924 logd("wifi setScanResults state" + getCurrentState() 3925 + " sup_state=" + state 3926 + " debouncing=" + linkDebouncing 3927 + " mConnectionRequests=" + mConnectionRequests 3928 + " selection=" + selection 3929 + " mNumScanResultsReturned " + mNumScanResultsReturned 3930 + " mScanResults " + mScanResults.size()); 3931 } 3932 if (attemptAutoJoin) { 3933 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3934 } 3935 // Loose last selected configuration if we have been disconnected for 5 minutes 3936 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3937 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3938 } 3939 3940 if (attemptAutoJoin) { 3941 synchronized (mScanResultCache) { 3942 // AutoJoincontroller will directly acces the scan result list and update it with 3943 // ScanResult status 3944 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3945 } 3946 } 3947 if (linkDebouncing) { 3948 // If debouncing, we dont re-select a SSID or BSSID hence 3949 // there is no need to call the network selection code 3950 // in WifiAutoJoinController, instead, 3951 // just try to reconnect to the same SSID by triggering a roam 3952 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3953 } 3954 } 3955 3956 /* 3957 * Fetch RSSI, linkspeed, and frequency on current connection 3958 */ 3959 private void fetchRssiLinkSpeedAndFrequencyNative() { 3960 int newRssi = -1; 3961 int newLinkSpeed = -1; 3962 int newFrequency = -1; 3963 3964 String signalPoll = mWifiNative.signalPoll(); 3965 3966 if (signalPoll != null) { 3967 String[] lines = signalPoll.split("\n"); 3968 for (String line : lines) { 3969 String[] prop = line.split("="); 3970 if (prop.length < 2) continue; 3971 try { 3972 if (prop[0].equals("RSSI")) { 3973 newRssi = Integer.parseInt(prop[1]); 3974 } else if (prop[0].equals("LINKSPEED")) { 3975 newLinkSpeed = Integer.parseInt(prop[1]); 3976 } else if (prop[0].equals("FREQUENCY")) { 3977 newFrequency = Integer.parseInt(prop[1]); 3978 } 3979 } catch (NumberFormatException e) { 3980 //Ignore, defaults on rssi and linkspeed are assigned 3981 } 3982 } 3983 } 3984 3985 if (PDBG) { 3986 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3987 + Integer.toString(newRssi) + " linkspeed=" 3988 + Integer.toString(newLinkSpeed)); 3989 } 3990 3991 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3992 // screen out invalid values 3993 /* some implementations avoid negative values by adding 256 3994 * so we need to adjust for that here. 3995 */ 3996 if (newRssi > 0) newRssi -= 256; 3997 mWifiInfo.setRssi(newRssi); 3998 /* 3999 * Rather then sending the raw RSSI out every time it 4000 * changes, we precalculate the signal level that would 4001 * be displayed in the status bar, and only send the 4002 * broadcast if that much more coarse-grained number 4003 * changes. This cuts down greatly on the number of 4004 * broadcasts, at the cost of not informing others 4005 * interested in RSSI of all the changes in signal 4006 * level. 4007 */ 4008 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4009 if (newSignalLevel != mLastSignalLevel) { 4010 sendRssiChangeBroadcast(newRssi); 4011 } 4012 mLastSignalLevel = newSignalLevel; 4013 } else { 4014 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4015 } 4016 4017 if (newLinkSpeed != -1) { 4018 mWifiInfo.setLinkSpeed(newLinkSpeed); 4019 } 4020 if (newFrequency > 0) { 4021 if (ScanResult.is5GHz(newFrequency)) { 4022 mWifiConnectionStatistics.num5GhzConnected++; 4023 } 4024 if (ScanResult.is24GHz(newFrequency)) { 4025 mWifiConnectionStatistics.num24GhzConnected++; 4026 } 4027 mWifiInfo.setFrequency(newFrequency); 4028 } 4029 mWifiConfigStore.updateConfiguration(mWifiInfo); 4030 } 4031 4032 /** 4033 * Determine if we need to switch network: 4034 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4035 * - match the uregncy of the switch versus the packet usage at the interface 4036 */ 4037 boolean shouldSwitchNetwork(int networkDelta) { 4038 int delta; 4039 if (networkDelta <= 0) { 4040 return false; 4041 } 4042 delta = networkDelta; 4043 if (mWifiInfo != null) { 4044 if (!getEnableAutoJoinWhenAssociated() 4045 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4046 // If AutoJoin while associated is not enabled, 4047 // we should never switch network when already associated 4048 delta = -1000; 4049 } else { 4050 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4051 // TODO: at the interface. We should also discriminate between ucast and mcast, 4052 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4053 // TODO: broadcasts 4054 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4055 delta -= 999; 4056 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4057 delta -= 6; 4058 } 4059 logd("shouldSwitchNetwork " 4060 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4061 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4062 + " delta " + networkDelta + " -> " + delta); 4063 } 4064 } else { 4065 logd("shouldSwitchNetwork " 4066 + " delta " + networkDelta + " -> " + delta); 4067 } 4068 if (delta > 0) { 4069 return true; 4070 } 4071 return false; 4072 } 4073 4074 // Polling has completed, hence we wont have a score anymore 4075 private void cleanWifiScore() { 4076 mWifiInfo.txBadRate = 0; 4077 mWifiInfo.txSuccessRate = 0; 4078 mWifiInfo.txRetriesRate = 0; 4079 mWifiInfo.rxSuccessRate = 0; 4080 } 4081 4082 int mBadLinkspeedcount = 0; 4083 4084 // For debug, provide information about the last scoring operation 4085 String wifiScoringReport = null; 4086 4087 private void calculateWifiScore(WifiLinkLayerStats stats) { 4088 StringBuilder sb = new StringBuilder(); 4089 4090 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4091 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4092 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4093 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4094 < mWifiConfigStore.badLinkSpeed5); 4095 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4096 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4097 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4098 >= mWifiConfigStore.goodLinkSpeed5); 4099 4100 if (isBadLinkspeed) { 4101 if (mBadLinkspeedcount < 6) 4102 mBadLinkspeedcount++; 4103 } else { 4104 if (mBadLinkspeedcount > 0) 4105 mBadLinkspeedcount--; 4106 } 4107 4108 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4109 if (isGoodLinkspeed) sb.append(" gl"); 4110 4111 /** 4112 * We want to make sure that we use the 24GHz RSSI thresholds if 4113 * there are 2.4GHz scan results 4114 * otherwise we end up lowering the score based on 5GHz values 4115 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4116 * We also might unblacklist the configuation based on 2.4GHz 4117 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4118 */ 4119 boolean use24Thresholds = false; 4120 boolean homeNetworkBoost = false; 4121 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4122 ScanDetailCache scanDetailCache = 4123 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4124 if (currentConfiguration != null && scanDetailCache != null) { 4125 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4126 if (currentConfiguration.visibility != null) { 4127 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4128 && currentConfiguration.visibility.rssi24 4129 >= (currentConfiguration.visibility.rssi5 - 2)) { 4130 use24Thresholds = true; 4131 } 4132 } 4133 if (scanDetailCache.size() <= 6 4134 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4135 && currentConfiguration.allowedKeyManagement. 4136 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4137 // A PSK network with less than 6 known BSSIDs 4138 // This is most likely a home network and thus we want to stick to wifi more 4139 homeNetworkBoost = true; 4140 } 4141 } 4142 if (homeNetworkBoost) sb.append(" hn"); 4143 if (use24Thresholds) sb.append(" u24"); 4144 4145 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4146 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4147 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4148 4149 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4150 4151 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4152 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4153 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4154 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4155 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4156 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4157 4158 if (isBadRSSI) sb.append(" br"); 4159 if (isLowRSSI) sb.append(" lr"); 4160 if (isHighRSSI) sb.append(" hr"); 4161 4162 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4163 if (currentConfiguration != null && 4164 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4165 if (isBadRSSI) { 4166 currentConfiguration.numTicksAtBadRSSI++; 4167 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4168 // We remained associated for a compound amount of time while passing 4169 // traffic, hence loose the corresponding user triggered disabled stats 4170 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4171 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4172 } 4173 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4174 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4175 } 4176 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4177 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4178 } 4179 currentConfiguration.numTicksAtBadRSSI = 0; 4180 } 4181 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4182 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4183 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4184 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4185 score = score - 5; 4186 penalizedDueToUserTriggeredDisconnect = 1; 4187 sb.append(" p1"); 4188 } 4189 } else if (isLowRSSI) { 4190 currentConfiguration.numTicksAtLowRSSI++; 4191 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4192 // We remained associated for a compound amount of time while passing 4193 // traffic, hence loose the corresponding user triggered disabled stats 4194 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4195 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4196 } 4197 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4198 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4199 } 4200 currentConfiguration.numTicksAtLowRSSI = 0; 4201 } 4202 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4203 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4204 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4205 score = score - 5; 4206 penalizedDueToUserTriggeredDisconnect = 2; 4207 sb.append(" p2"); 4208 } 4209 } else if (!isHighRSSI) { 4210 currentConfiguration.numTicksAtNotHighRSSI++; 4211 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4212 // We remained associated for a compound amount of time while passing 4213 // traffic, hence loose the corresponding user triggered disabled stats 4214 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4215 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4216 } 4217 currentConfiguration.numTicksAtNotHighRSSI = 0; 4218 } 4219 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4220 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4221 score = score - 5; 4222 penalizedDueToUserTriggeredDisconnect = 3; 4223 sb.append(" p3"); 4224 } 4225 } 4226 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4227 currentConfiguration.numTicksAtLowRSSI, 4228 currentConfiguration.numTicksAtNotHighRSSI)); 4229 } 4230 4231 if (PDBG) { 4232 String rssiStatus = ""; 4233 if (isBadRSSI) rssiStatus += " badRSSI "; 4234 else if (isHighRSSI) rssiStatus += " highRSSI "; 4235 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4236 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4237 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4238 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4239 + " score=" + Integer.toString(mWifiInfo.score) 4240 + rssiStatus 4241 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4242 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4243 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4244 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4245 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4246 } 4247 4248 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4249 && (isBadRSSI || isLowRSSI)) { 4250 // Link is stuck 4251 if (mWifiInfo.linkStuckCount < 5) 4252 mWifiInfo.linkStuckCount += 1; 4253 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4254 if (PDBG) logd(" bad link -> stuck count =" 4255 + Integer.toString(mWifiInfo.linkStuckCount)); 4256 } else if (mWifiInfo.txBadRate < 0.3) { 4257 if (mWifiInfo.linkStuckCount > 0) 4258 mWifiInfo.linkStuckCount -= 1; 4259 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4260 if (PDBG) logd(" good link -> stuck count =" 4261 + Integer.toString(mWifiInfo.linkStuckCount)); 4262 } 4263 4264 sb.append(String.format(" [%d", score)); 4265 4266 if (mWifiInfo.linkStuckCount > 1) { 4267 // Once link gets stuck for more than 3 seconds, start reducing the score 4268 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4269 } 4270 sb.append(String.format(",%d", score)); 4271 4272 if (isBadLinkspeed) { 4273 score -= 4; 4274 if (PDBG) { 4275 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4276 + " score=" + Integer.toString(score)); 4277 } 4278 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4279 score += 4; // So as bad rssi alone dont kill us 4280 } 4281 sb.append(String.format(",%d", score)); 4282 4283 if (isBadRSSI) { 4284 if (mWifiInfo.badRssiCount < 7) 4285 mWifiInfo.badRssiCount += 1; 4286 } else if (isLowRSSI) { 4287 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4288 if (mWifiInfo.badRssiCount > 0) { 4289 // Decrement bad Rssi count 4290 mWifiInfo.badRssiCount -= 1; 4291 } 4292 } else { 4293 mWifiInfo.badRssiCount = 0; 4294 mWifiInfo.lowRssiCount = 0; 4295 } 4296 4297 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4298 sb.append(String.format(",%d", score)); 4299 4300 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4301 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4302 + " --> score " + Integer.toString(score)); 4303 4304 4305 if (isHighRSSI) { 4306 score += 5; 4307 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4308 } 4309 sb.append(String.format(",%d]", score)); 4310 4311 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4312 4313 //sanitize boundaries 4314 if (score > NetworkAgent.WIFI_BASE_SCORE) 4315 score = NetworkAgent.WIFI_BASE_SCORE; 4316 if (score < 0) 4317 score = 0; 4318 4319 //report score 4320 if (score != mWifiInfo.score) { 4321 if (DBG) { 4322 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4323 } 4324 mWifiInfo.score = score; 4325 if (mNetworkAgent != null) { 4326 mNetworkAgent.sendNetworkScore(score); 4327 } 4328 } 4329 wifiScoringReport = sb.toString(); 4330 } 4331 4332 public double getTxPacketRate() { 4333 if (mWifiInfo != null) { 4334 return mWifiInfo.txSuccessRate; 4335 } 4336 return -1; 4337 } 4338 4339 public double getRxPacketRate() { 4340 if (mWifiInfo != null) { 4341 return mWifiInfo.rxSuccessRate; 4342 } 4343 return -1; 4344 } 4345 4346 /** 4347 * Fetch TX packet counters on current connection 4348 */ 4349 private void fetchPktcntNative(RssiPacketCountInfo info) { 4350 String pktcntPoll = mWifiNative.pktcntPoll(); 4351 4352 if (pktcntPoll != null) { 4353 String[] lines = pktcntPoll.split("\n"); 4354 for (String line : lines) { 4355 String[] prop = line.split("="); 4356 if (prop.length < 2) continue; 4357 try { 4358 if (prop[0].equals("TXGOOD")) { 4359 info.txgood = Integer.parseInt(prop[1]); 4360 } else if (prop[0].equals("TXBAD")) { 4361 info.txbad = Integer.parseInt(prop[1]); 4362 } 4363 } catch (NumberFormatException e) { 4364 // Ignore 4365 } 4366 } 4367 } 4368 } 4369 4370 private boolean clearIPv4Address(String iface) { 4371 try { 4372 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4373 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4374 mNwService.setInterfaceConfig(iface, ifcg); 4375 return true; 4376 } catch (RemoteException e) { 4377 return false; 4378 } 4379 } 4380 4381 private boolean isProvisioned(LinkProperties lp) { 4382 return lp.isProvisioned() || 4383 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4384 } 4385 4386 /** 4387 * Creates a new LinkProperties object by merging information from various sources. 4388 * <p/> 4389 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4390 * netlink, static configuration, ...). When one of these sources of information has updated 4391 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4392 * information that came from other sources. Instead, when one of those sources has new 4393 * information, we update the object that tracks the information from that source and then 4394 * call this method to integrate the change into a new LinkProperties object for subsequent 4395 * comparison with mLinkProperties. 4396 * <p/> 4397 * The information used to build LinkProperties is currently obtained as follows: 4398 * - Interface name: set in the constructor. 4399 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4400 * - IPv4 routes, DNS servers, and domains: DHCP. 4401 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4402 * - HTTP proxy: the wifi config store. 4403 */ 4404 private LinkProperties makeLinkProperties() { 4405 LinkProperties newLp = new LinkProperties(); 4406 4407 // Interface name, proxy, and TCP buffer sizes are locally configured. 4408 newLp.setInterfaceName(mInterfaceName); 4409 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4410 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4411 newLp.setTcpBufferSizes(mTcpBufferSizes); 4412 } 4413 4414 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4415 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4416 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4417 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4418 newLp.addRoute(route); 4419 } 4420 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4421 // Only add likely reachable DNS servers. 4422 // TODO: investigate deleting this. 4423 if (newLp.isReachable(dns)) { 4424 newLp.addDnsServer(dns); 4425 } 4426 } 4427 4428 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4429 synchronized (mDhcpResultsLock) { 4430 // Even when we're using static configuration, we don't need to look at the config 4431 // store, because static IP configuration also populates mDhcpResults. 4432 if ((mDhcpResults != null)) { 4433 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4434 newLp.addRoute(route); 4435 } 4436 for (InetAddress dns : mDhcpResults.dnsServers) { 4437 // Only add likely reachable DNS servers. 4438 // TODO: investigate deleting this. 4439 if (newLp.isReachable(dns)) { 4440 newLp.addDnsServer(dns); 4441 } 4442 } 4443 newLp.setDomains(mDhcpResults.domains); 4444 } 4445 } 4446 4447 return newLp; 4448 } 4449 4450 private void updateLinkProperties(int reason) { 4451 LinkProperties newLp = makeLinkProperties(); 4452 4453 final boolean linkChanged = !newLp.equals(mLinkProperties); 4454 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4455 final boolean isProvisioned = isProvisioned(newLp); 4456 final boolean lostIPv4Provisioning = 4457 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4458 final DetailedState detailedState = getNetworkDetailedState(); 4459 4460 if (linkChanged) { 4461 if (DBG) { 4462 log("Link configuration changed for netId: " + mLastNetworkId 4463 + " old: " + mLinkProperties + " new: " + newLp); 4464 } 4465 mLinkProperties = newLp; 4466 if (mIpReachabilityMonitor != null) { 4467 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4468 } 4469 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4470 } 4471 4472 if (DBG) { 4473 StringBuilder sb = new StringBuilder(); 4474 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4475 sb.append(" state: " + detailedState); 4476 sb.append(" reason: " + smToString(reason)); 4477 4478 if (mLinkProperties != null) { 4479 if (mLinkProperties.hasIPv4Address()) { 4480 sb.append(" v4"); 4481 } 4482 if (mLinkProperties.hasGlobalIPv6Address()) { 4483 sb.append(" v6"); 4484 } 4485 if (mLinkProperties.hasIPv4DefaultRoute()) { 4486 sb.append(" v4r"); 4487 } 4488 if (mLinkProperties.hasIPv6DefaultRoute()) { 4489 sb.append(" v6r"); 4490 } 4491 if (mLinkProperties.hasIPv4DnsServer()) { 4492 sb.append(" v4dns"); 4493 } 4494 if (mLinkProperties.hasIPv6DnsServer()) { 4495 sb.append(" v6dns"); 4496 } 4497 if (isProvisioned) { 4498 sb.append(" isprov"); 4499 } 4500 } 4501 logd(sb.toString()); 4502 } 4503 4504 // If we just configured or lost IP configuration, do the needful. 4505 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4506 // here because those should only be called if we're attempting to connect or already 4507 // connected, whereas updateLinkProperties can be called at any time. 4508 switch (reason) { 4509 case DhcpStateMachine.DHCP_SUCCESS: 4510 case CMD_STATIC_IP_SUCCESS: 4511 // IPv4 provisioning succeded. Advance to connected state. 4512 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4513 if (!isProvisioned) { 4514 // Can never happen unless DHCP reports success but isProvisioned thinks the 4515 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4516 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4517 // TODO: disconnect here instead. If our configuration is not usable, there's no 4518 // point in staying connected, and if mLinkProperties is out of sync with 4519 // reality, that will cause problems in the future. 4520 logd("IPv4 config succeeded, but not provisioned"); 4521 } 4522 break; 4523 4524 case DhcpStateMachine.DHCP_FAILURE: 4525 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4526 // give up and disconnect. 4527 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4528 if (!isProvisioned || lostIPv4Provisioning) { 4529 sendMessage(CMD_IP_CONFIGURATION_LOST); 4530 } else { 4531 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4532 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4533 4534 // To be sure we don't get stuck with a non-working network if all we had is 4535 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4536 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4537 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4538 // necessary for provisioning, its deletion will cause us to disconnect. 4539 // 4540 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4541 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4542 // not return true if we're using DHCP and don't have an IPv4 default route. So 4543 // for now it's only here for extra redundancy. However, it will increase 4544 // robustness if we move to getting IPv4 routes from netlink as well. 4545 loge("DHCP failure: provisioned, clearing IPv4 address."); 4546 if (!clearIPv4Address(mInterfaceName)) { 4547 sendMessage(CMD_IP_CONFIGURATION_LOST); 4548 } 4549 } 4550 break; 4551 4552 case CMD_STATIC_IP_FAILURE: 4553 // Static configuration was invalid, or an error occurred in applying it. Give up. 4554 sendMessage(CMD_IP_CONFIGURATION_LOST); 4555 break; 4556 4557 case CMD_UPDATE_LINKPROPERTIES: 4558 // IP addresses, DNS servers, etc. changed. Act accordingly. 4559 if (wasProvisioned && !isProvisioned) { 4560 // We no longer have a usable network configuration. Disconnect. 4561 sendMessage(CMD_IP_CONFIGURATION_LOST); 4562 } else if (!wasProvisioned && isProvisioned) { 4563 // We have a usable IPv6-only config. Advance to connected state. 4564 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4565 } 4566 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4567 // If anything has changed and we're already connected, send out a notification. 4568 sendLinkConfigurationChangedBroadcast(); 4569 } 4570 break; 4571 } 4572 } 4573 4574 /** 4575 * Clears all our link properties. 4576 */ 4577 private void clearLinkProperties() { 4578 // Clear the link properties obtained from DHCP and netlink. 4579 synchronized (mDhcpResultsLock) { 4580 if (mDhcpResults != null) { 4581 mDhcpResults.clear(); 4582 } 4583 } 4584 mNetlinkTracker.clearLinkProperties(); 4585 if (mIpReachabilityMonitor != null) { 4586 mIpReachabilityMonitor.clearLinkProperties(); 4587 } 4588 4589 // Now clear the merged link properties. 4590 mLinkProperties.clear(); 4591 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4592 } 4593 4594 /** 4595 * try to update default route MAC address. 4596 */ 4597 private String updateDefaultRouteMacAddress(int timeout) { 4598 String address = null; 4599 for (RouteInfo route : mLinkProperties.getRoutes()) { 4600 if (route.isDefaultRoute() && route.hasGateway()) { 4601 InetAddress gateway = route.getGateway(); 4602 if (gateway instanceof Inet4Address) { 4603 if (PDBG) { 4604 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4605 + gateway.getHostAddress()); 4606 } 4607 address = macAddressFromRoute(gateway.getHostAddress()); 4608 /* The gateway's MAC address is known */ 4609 if ((address == null) && (timeout > 0)) { 4610 boolean reachable = false; 4611 try { 4612 reachable = gateway.isReachable(timeout); 4613 } catch (Exception e) { 4614 loge("updateDefaultRouteMacAddress exception reaching :" 4615 + gateway.getHostAddress()); 4616 4617 } finally { 4618 if (reachable == true) { 4619 4620 address = macAddressFromRoute(gateway.getHostAddress()); 4621 if (PDBG) { 4622 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4623 + gateway.getHostAddress() + " found " + address); 4624 } 4625 } 4626 } 4627 } 4628 if (address != null) { 4629 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4630 } 4631 } 4632 } 4633 } 4634 return address; 4635 } 4636 4637 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4638 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4639 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4640 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4641 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4642 } 4643 4644 private void sendRssiChangeBroadcast(final int newRssi) { 4645 try { 4646 mBatteryStats.noteWifiRssiChanged(newRssi); 4647 } catch (RemoteException e) { 4648 // Won't happen. 4649 } 4650 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4651 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4652 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4653 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4654 } 4655 4656 private void sendNetworkStateChangeBroadcast(String bssid) { 4657 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4658 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4659 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4660 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4661 if (bssid != null) 4662 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4663 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4664 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4665 // We no longer report MAC address to third-parties and our code does 4666 // not rely on this broadcast, so just send the default MAC address. 4667 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4668 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4669 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4670 } 4671 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4672 } 4673 4674 private WifiInfo getWiFiInfoForUid(int uid) { 4675 if (Binder.getCallingUid() == Process.myUid()) { 4676 return mWifiInfo; 4677 } 4678 4679 WifiInfo result = new WifiInfo(mWifiInfo); 4680 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4681 4682 IBinder binder = ServiceManager.getService("package"); 4683 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4684 4685 try { 4686 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4687 uid) == PackageManager.PERMISSION_GRANTED) { 4688 result.setMacAddress(mWifiInfo.getMacAddress()); 4689 } 4690 } catch (RemoteException e) { 4691 Log.e(TAG, "Error checking receiver permission", e); 4692 } 4693 4694 return result; 4695 } 4696 4697 private void sendLinkConfigurationChangedBroadcast() { 4698 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4699 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4700 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4701 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4702 } 4703 4704 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4705 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4706 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4707 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4708 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4709 } 4710 4711 /** 4712 * Record the detailed state of a network. 4713 * 4714 * @param state the new {@code DetailedState} 4715 */ 4716 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4717 boolean hidden = false; 4718 4719 if (linkDebouncing || isRoaming()) { 4720 // There is generally a confusion in the system about colluding 4721 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4722 // which leads to multiple confusion. 4723 // 4724 // If link is de-bouncing or roaming, we already have an IP address 4725 // as well we were connected and are doing L2 cycles of 4726 // reconnecting or renewing IP address to check that we still have it 4727 // This L2 link flapping should ne be reflected into the Network state 4728 // which is the state of the WiFi Network visible to Layer 3 and applications 4729 // Note that once debouncing and roaming are completed, we will 4730 // set the Network state to where it should be, or leave it as unchanged 4731 // 4732 hidden = true; 4733 } 4734 if (DBG) { 4735 log("setDetailed state, old =" 4736 + mNetworkInfo.getDetailedState() + " and new state=" + state 4737 + " hidden=" + hidden); 4738 } 4739 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4740 // Always indicate that SSID has changed 4741 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4742 if (DBG) { 4743 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4744 } 4745 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4746 sendNetworkStateChangeBroadcast(null); 4747 } 4748 } 4749 if (hidden == true) { 4750 return false; 4751 } 4752 4753 if (state != mNetworkInfo.getDetailedState()) { 4754 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4755 if (mNetworkAgent != null) { 4756 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4757 } 4758 sendNetworkStateChangeBroadcast(null); 4759 return true; 4760 } 4761 return false; 4762 } 4763 4764 private DetailedState getNetworkDetailedState() { 4765 return mNetworkInfo.getDetailedState(); 4766 } 4767 4768 private SupplicantState handleSupplicantStateChange(Message message) { 4769 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4770 SupplicantState state = stateChangeResult.state; 4771 // Supplicant state change 4772 // [31-13] Reserved for future use 4773 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4774 // 50023 supplicant_state_changed (custom|1|5) 4775 mWifiInfo.setSupplicantState(state); 4776 // Network id is only valid when we start connecting 4777 if (SupplicantState.isConnecting(state)) { 4778 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4779 } else { 4780 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4781 } 4782 4783 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4784 4785 if (mWhiteListedSsids != null 4786 && mWhiteListedSsids.length > 0 4787 && stateChangeResult.wifiSsid != null) { 4788 String SSID = stateChangeResult.wifiSsid.toString(); 4789 String currentSSID = mWifiInfo.getSSID(); 4790 if (SSID != null 4791 && currentSSID != null 4792 && !SSID.equals(WifiSsid.NONE)) { 4793 // Remove quote before comparing 4794 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4795 && SSID.charAt(SSID.length() - 1) == '"') 4796 { 4797 SSID = SSID.substring(1, SSID.length() - 1); 4798 } 4799 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4800 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4801 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4802 } 4803 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4804 lastConnectAttempt = System.currentTimeMillis(); 4805 targetWificonfiguration 4806 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4807 transitionTo(mRoamingState); 4808 } 4809 } 4810 } 4811 4812 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4813 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4814 4815 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4816 4817 return state; 4818 } 4819 4820 /** 4821 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4822 * using the interface, stopping DHCP & disabling interface 4823 */ 4824 private void handleNetworkDisconnect() { 4825 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4826 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4827 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4828 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4829 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4830 4831 4832 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4833 4834 stopDhcp(); 4835 4836 try { 4837 mNwService.clearInterfaceAddresses(mInterfaceName); 4838 mNwService.disableIpv6(mInterfaceName); 4839 } catch (Exception e) { 4840 loge("Failed to clear addresses or disable ipv6" + e); 4841 } 4842 4843 /* Reset data structures */ 4844 mBadLinkspeedcount = 0; 4845 mWifiInfo.reset(); 4846 linkDebouncing = false; 4847 /* Reset roaming parameters */ 4848 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4849 4850 /** 4851 * fullBandConnectedTimeIntervalMilli: 4852 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4853 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4854 * Initialize to sane value = 20 seconds 4855 */ 4856 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4857 4858 setNetworkDetailedState(DetailedState.DISCONNECTED); 4859 if (mNetworkAgent != null) { 4860 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4861 mNetworkAgent = null; 4862 } 4863 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4864 4865 /* Clear network properties */ 4866 clearLinkProperties(); 4867 4868 /* Cend event to CM & network change broadcast */ 4869 sendNetworkStateChangeBroadcast(mLastBssid); 4870 4871 /* Cancel auto roam requests */ 4872 autoRoamSetBSSID(mLastNetworkId, "any"); 4873 4874 mLastBssid = null; 4875 registerDisconnected(); 4876 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4877 } 4878 4879 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4880 /* Socket connection can be lost when we do a graceful shutdown 4881 * or when the driver is hung. Ensure supplicant is stopped here. 4882 */ 4883 if (killSupplicant) { 4884 mWifiMonitor.killSupplicant(mP2pSupported); 4885 } 4886 mWifiNative.closeSupplicantConnection(); 4887 sendSupplicantConnectionChangedBroadcast(false); 4888 setWifiState(WIFI_STATE_DISABLED); 4889 } 4890 4891 void handlePreDhcpSetup() { 4892 mDhcpActive = true; 4893 if (!mBluetoothConnectionActive) { 4894 /* 4895 * There are problems setting the Wi-Fi driver's power 4896 * mode to active when bluetooth coexistence mode is 4897 * enabled or sense. 4898 * <p> 4899 * We set Wi-Fi to active mode when 4900 * obtaining an IP address because we've found 4901 * compatibility issues with some routers with low power 4902 * mode. 4903 * <p> 4904 * In order for this active power mode to properly be set, 4905 * we disable coexistence mode until we're done with 4906 * obtaining an IP address. One exception is if we 4907 * are currently connected to a headset, since disabling 4908 * coexistence would interrupt that connection. 4909 */ 4910 // Disable the coexistence mode 4911 mWifiNative.setBluetoothCoexistenceMode( 4912 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4913 } 4914 4915 // Disable power save and suspend optimizations during DHCP 4916 // Note: The order here is important for now. Brcm driver changes 4917 // power settings when we control suspend mode optimizations. 4918 // TODO: Remove this comment when the driver is fixed. 4919 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4920 mWifiNative.setPowerSave(false); 4921 4922 // Update link layer stats 4923 getWifiLinkLayerStats(false); 4924 4925 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4926 Message msg = new Message(); 4927 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4928 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4929 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4930 msg.obj = mDhcpStateMachine; 4931 mWifiP2pChannel.sendMessage(msg); 4932 } 4933 4934 4935 private boolean useLegacyDhcpClient() { 4936 return Settings.Global.getInt( 4937 mContext.getContentResolver(), 4938 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4939 } 4940 4941 private void maybeInitDhcpStateMachine() { 4942 if (mDhcpStateMachine == null) { 4943 if (useLegacyDhcpClient()) { 4944 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4945 mContext, WifiStateMachine.this, mInterfaceName); 4946 } else { 4947 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4948 mContext, WifiStateMachine.this, mInterfaceName); 4949 } 4950 } 4951 } 4952 4953 void startDhcp() { 4954 maybeInitDhcpStateMachine(); 4955 mDhcpStateMachine.registerForPreDhcpNotification(); 4956 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4957 } 4958 4959 void renewDhcp() { 4960 maybeInitDhcpStateMachine(); 4961 mDhcpStateMachine.registerForPreDhcpNotification(); 4962 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4963 } 4964 4965 void stopDhcp() { 4966 if (mDhcpStateMachine != null) { 4967 /* In case we were in middle of DHCP operation restore back powermode */ 4968 handlePostDhcpSetup(); 4969 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4970 } 4971 } 4972 4973 void handlePostDhcpSetup() { 4974 /* Restore power save and suspend optimizations */ 4975 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4976 mWifiNative.setPowerSave(true); 4977 4978 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4979 4980 // Set the coexistence mode back to its default value 4981 mWifiNative.setBluetoothCoexistenceMode( 4982 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4983 4984 mDhcpActive = false; 4985 } 4986 4987 void connectScanningService() { 4988 4989 if (mWifiScanner == null) { 4990 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4991 } 4992 } 4993 4994 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4995 4996 if (PDBG) { 4997 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 4998 logd("link address " + dhcpResults.ipAddress); 4999 } 5000 5001 Inet4Address addr; 5002 synchronized (mDhcpResultsLock) { 5003 mDhcpResults = dhcpResults; 5004 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5005 } 5006 5007 if (isRoaming()) { 5008 int previousAddress = mWifiInfo.getIpAddress(); 5009 int newAddress = NetworkUtils.inetAddressToInt(addr); 5010 if (previousAddress != newAddress) { 5011 logd("handleIPv4Success, roaming and address changed" + 5012 mWifiInfo + " got: " + addr); 5013 } 5014 } 5015 mWifiInfo.setInetAddress(addr); 5016 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5017 updateLinkProperties(reason); 5018 } 5019 5020 private void handleSuccessfulIpConfiguration() { 5021 mLastSignalLevel = -1; // Force update of signal strength 5022 WifiConfiguration c = getCurrentWifiConfiguration(); 5023 if (c != null) { 5024 // Reset IP failure tracking 5025 c.numConnectionFailures = 0; 5026 5027 // Tell the framework whether the newly connected network is trusted or untrusted. 5028 updateCapabilities(c); 5029 } 5030 if (c != null) { 5031 ScanResult result = getCurrentScanResult(); 5032 if (result == null) { 5033 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5034 c.configKey()); 5035 } else { 5036 // Clear the per BSSID failure count 5037 result.numIpConfigFailures = 0; 5038 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5039 // any BSSID, even though it may already have a non zero ip failure count, 5040 // this will typically happen if the user walks away and come back to his arrea 5041 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5042 // in supplicant for a couple of hours or a day 5043 mWifiConfigStore.clearBssidBlacklist(); 5044 } 5045 } 5046 } 5047 5048 private void handleIPv4Failure(int reason) { 5049 synchronized(mDhcpResultsLock) { 5050 if (mDhcpResults != null) { 5051 mDhcpResults.clear(); 5052 } 5053 } 5054 if (PDBG) { 5055 logd("handleIPv4Failure"); 5056 } 5057 updateLinkProperties(reason); 5058 } 5059 5060 private void handleIpConfigurationLost() { 5061 mWifiInfo.setInetAddress(null); 5062 mWifiInfo.setMeteredHint(false); 5063 5064 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5065 "DHCP FAILURE", mWifiInfo.getBSSID()); 5066 5067 /* DHCP times out after about 30 seconds, we do a 5068 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5069 */ 5070 mWifiNative.disconnect(); 5071 } 5072 5073 // TODO: De-duplicated this and handleIpConfigurationLost(). 5074 private void handleIpReachabilityLost() { 5075 // No need to be told about any additional neighbors that might also 5076 // become unreachable--quiet them now while we start disconnecting. 5077 if (mIpReachabilityMonitor != null) { 5078 mIpReachabilityMonitor.clearLinkProperties(); 5079 } 5080 5081 mWifiInfo.setInetAddress(null); 5082 mWifiInfo.setMeteredHint(false); 5083 5084 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5085 5086 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5087 mWifiNative.disconnect(); 5088 } 5089 5090 private int convertFrequencyToChannelNumber(int frequency) { 5091 if (frequency >= 2412 && frequency <= 2484) { 5092 return (frequency -2412) / 5 + 1; 5093 } else if (frequency >= 5170 && frequency <=5825) { 5094 //DFS is included 5095 return (frequency -5170) / 5 + 34; 5096 } else { 5097 return 0; 5098 } 5099 } 5100 5101 private int chooseApChannel(int apBand) { 5102 int apChannel; 5103 int[] channel; 5104 5105 if (apBand == 0) { 5106 if (mWifiApConfigStore.allowed2GChannel == null || 5107 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5108 //most safe channel to use 5109 if(DBG) { 5110 Log.d(TAG, "No specified 2G allowed channel list"); 5111 } 5112 apChannel = 6; 5113 } else { 5114 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5115 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5116 } 5117 } else { 5118 //5G without DFS 5119 channel = mWifiNative.getChannelsForBand(2); 5120 if (channel != null && channel.length > 0) { 5121 apChannel = channel[mRandom.nextInt(channel.length)]; 5122 apChannel = convertFrequencyToChannelNumber(apChannel); 5123 } else { 5124 Log.e(TAG, "SoftAp do not get available channel list"); 5125 apChannel = 0; 5126 } 5127 } 5128 5129 if(DBG) { 5130 Log.d(TAG, "SoftAp set on channel " + apChannel); 5131 } 5132 5133 return apChannel; 5134 } 5135 5136 /* SoftAP configuration */ 5137 private boolean enableSoftAp() { 5138 if (WifiNative.getInterfaces() != 0) { 5139 if (!mWifiNative.toggleInterface(0)) { 5140 if (DBG) Log.e(TAG, "toggleInterface failed"); 5141 return false; 5142 } 5143 } else { 5144 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5145 } 5146 5147 try { 5148 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5149 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5150 } catch (Exception e) { 5151 Log.e(TAG, "Failed to reload AP firmware " + e); 5152 } 5153 5154 if (WifiNative.startHal() == false) { 5155 /* starting HAL is optional */ 5156 Log.e(TAG, "Failed to start HAL"); 5157 } 5158 return true; 5159 } 5160 5161 /* Current design is to not set the config on a running hostapd but instead 5162 * stop and start tethering when user changes config on a running access point 5163 * 5164 * TODO: Add control channel setup through hostapd that allows changing config 5165 * on a running daemon 5166 */ 5167 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5168 // set channel 5169 final WifiConfiguration config = new WifiConfiguration(configuration); 5170 5171 if (DBG) { 5172 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5173 } 5174 5175 //We need HAL support to set country code and get available channel list, if HAL is 5176 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5177 if (mWifiNative.isHalStarted()) { 5178 //set country code through HAL Here 5179 if (mSetCountryCode != null) { 5180 if (!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 5181 if (config.apBand != 0) { 5182 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5183 //countrycode is mandatory for 5GHz 5184 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5185 return; 5186 } 5187 } 5188 } else { 5189 if (config.apBand != 0) { 5190 //countrycode is mandatory for 5GHz 5191 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5192 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5193 return; 5194 } 5195 } 5196 5197 if (config.apChannel == 0) { 5198 config.apChannel = chooseApChannel(config.apBand); 5199 if (config.apChannel == 0) { 5200 //fail to get available channel 5201 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5202 return; 5203 } 5204 } 5205 } else { 5206 //for some old device, wifiHal may not be supported 5207 config.apChannel = 0; 5208 config.apChannel = 6; 5209 } 5210 // Start hostapd on a separate thread 5211 new Thread(new Runnable() { 5212 public void run() { 5213 try { 5214 mNwService.startAccessPoint(config, mInterfaceName); 5215 } catch (Exception e) { 5216 loge("Exception in softap start " + e); 5217 try { 5218 mNwService.stopAccessPoint(mInterfaceName); 5219 mNwService.startAccessPoint(config, mInterfaceName); 5220 } catch (Exception e1) { 5221 loge("Exception in softap re-start " + e1); 5222 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5223 return; 5224 } 5225 } 5226 if (DBG) log("Soft AP start successful"); 5227 sendMessage(CMD_START_AP_SUCCESS); 5228 } 5229 }).start(); 5230 } 5231 5232 /* 5233 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5234 * so as to record MAC address of default gateway. 5235 **/ 5236 private String macAddressFromRoute(String ipAddress) { 5237 String macAddress = null; 5238 BufferedReader reader = null; 5239 try { 5240 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5241 5242 // Skip over the line bearing colum titles 5243 String line = reader.readLine(); 5244 5245 while ((line = reader.readLine()) != null) { 5246 String[] tokens = line.split("[ ]+"); 5247 if (tokens.length < 6) { 5248 continue; 5249 } 5250 5251 // ARP column format is 5252 // Address HWType HWAddress Flags Mask IFace 5253 String ip = tokens[0]; 5254 String mac = tokens[3]; 5255 5256 if (ipAddress.equals(ip)) { 5257 macAddress = mac; 5258 break; 5259 } 5260 } 5261 5262 if (macAddress == null) { 5263 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5264 "/proc/net/arp"); 5265 } 5266 5267 } catch (FileNotFoundException e) { 5268 loge("Could not open /proc/net/arp to lookup mac address"); 5269 } catch (IOException e) { 5270 loge("Could not read /proc/net/arp to lookup mac address"); 5271 } finally { 5272 try { 5273 if (reader != null) { 5274 reader.close(); 5275 } 5276 } catch (IOException e) { 5277 // Do nothing 5278 } 5279 } 5280 return macAddress; 5281 5282 } 5283 5284 private class WifiNetworkFactory extends NetworkFactory { 5285 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5286 super(l, c, TAG, f); 5287 } 5288 5289 @Override 5290 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5291 ++mConnectionRequests; 5292 } 5293 5294 @Override 5295 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5296 --mConnectionRequests; 5297 } 5298 5299 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5300 pw.println("mConnectionRequests " + mConnectionRequests); 5301 } 5302 5303 } 5304 5305 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5306 private int mUntrustedReqCount; 5307 5308 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5309 super(l, c, tag, f); 5310 } 5311 5312 @Override 5313 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5314 if (!networkRequest.networkCapabilities.hasCapability( 5315 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5316 if (++mUntrustedReqCount == 1) { 5317 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5318 } 5319 } 5320 } 5321 5322 @Override 5323 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5324 if (!networkRequest.networkCapabilities.hasCapability( 5325 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5326 if (--mUntrustedReqCount == 0) { 5327 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5328 } 5329 } 5330 } 5331 5332 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5333 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5334 } 5335 } 5336 5337 void maybeRegisterNetworkFactory() { 5338 if (mNetworkFactory == null) { 5339 checkAndSetConnectivityInstance(); 5340 if (mCm != null) { 5341 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5342 NETWORKTYPE, mNetworkCapabilitiesFilter); 5343 mNetworkFactory.setScoreFilter(60); 5344 mNetworkFactory.register(); 5345 5346 // We can't filter untrusted network in the capabilities filter because a trusted 5347 // network would still satisfy a request that accepts untrusted ones. 5348 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5349 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5350 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5351 mUntrustedNetworkFactory.register(); 5352 } 5353 } 5354 } 5355 5356 /******************************************************** 5357 * HSM states 5358 *******************************************************/ 5359 5360 class DefaultState extends State { 5361 @Override 5362 public boolean processMessage(Message message) { 5363 logStateAndMessage(message, getClass().getSimpleName()); 5364 5365 switch (message.what) { 5366 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5367 AsyncChannel ac = (AsyncChannel) message.obj; 5368 if (ac == mWifiP2pChannel) { 5369 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5370 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5371 } else { 5372 loge("WifiP2pService connection failure, error=" + message.arg1); 5373 } 5374 } else { 5375 loge("got HALF_CONNECTED for unknown channel"); 5376 } 5377 break; 5378 } 5379 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5380 AsyncChannel ac = (AsyncChannel) message.obj; 5381 if (ac == mWifiP2pChannel) { 5382 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5383 //TODO: Re-establish connection to state machine after a delay 5384 // mWifiP2pChannel.connect(mContext, getHandler(), 5385 // mWifiP2pManager.getMessenger()); 5386 } 5387 break; 5388 } 5389 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5390 mBluetoothConnectionActive = (message.arg1 != 5391 BluetoothAdapter.STATE_DISCONNECTED); 5392 break; 5393 /* Synchronous call returns */ 5394 case CMD_PING_SUPPLICANT: 5395 case CMD_ENABLE_NETWORK: 5396 case CMD_ADD_OR_UPDATE_NETWORK: 5397 case CMD_REMOVE_NETWORK: 5398 case CMD_SAVE_CONFIG: 5399 replyToMessage(message, message.what, FAILURE); 5400 break; 5401 case CMD_GET_CAPABILITY_FREQ: 5402 replyToMessage(message, message.what, null); 5403 break; 5404 case CMD_GET_CONFIGURED_NETWORKS: 5405 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5406 break; 5407 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5408 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5409 break; 5410 case CMD_ENABLE_RSSI_POLL: 5411 mEnableRssiPolling = (message.arg1 == 1); 5412 break; 5413 case CMD_SET_HIGH_PERF_MODE: 5414 if (message.arg1 == 1) { 5415 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5416 } else { 5417 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5418 } 5419 break; 5420 case CMD_BOOT_COMPLETED: 5421 maybeRegisterNetworkFactory(); 5422 break; 5423 case CMD_SCREEN_STATE_CHANGED: 5424 handleScreenStateChanged(message.arg1 != 0); 5425 break; 5426 /* Discard */ 5427 case CMD_START_SCAN: 5428 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5429 break; 5430 case CMD_START_SUPPLICANT: 5431 case CMD_STOP_SUPPLICANT: 5432 case CMD_STOP_SUPPLICANT_FAILED: 5433 case CMD_START_DRIVER: 5434 case CMD_STOP_DRIVER: 5435 case CMD_DELAYED_STOP_DRIVER: 5436 case CMD_DRIVER_START_TIMED_OUT: 5437 case CMD_START_AP: 5438 case CMD_START_AP_SUCCESS: 5439 case CMD_START_AP_FAILURE: 5440 case CMD_STOP_AP: 5441 case CMD_TETHER_STATE_CHANGE: 5442 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5443 case CMD_DISCONNECT: 5444 case CMD_RECONNECT: 5445 case CMD_REASSOCIATE: 5446 case CMD_RELOAD_TLS_AND_RECONNECT: 5447 case WifiMonitor.SUP_CONNECTION_EVENT: 5448 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5449 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5450 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5451 case WifiMonitor.SCAN_RESULTS_EVENT: 5452 case WifiMonitor.SCAN_FAILED_EVENT: 5453 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5454 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5455 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5456 case WifiMonitor.WPS_OVERLAP_EVENT: 5457 case CMD_BLACKLIST_NETWORK: 5458 case CMD_CLEAR_BLACKLIST: 5459 case CMD_SET_OPERATIONAL_MODE: 5460 case CMD_SET_COUNTRY_CODE: 5461 case CMD_SET_FREQUENCY_BAND: 5462 case CMD_RSSI_POLL: 5463 case CMD_ENABLE_ALL_NETWORKS: 5464 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5465 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5466 /* Handled by WifiApConfigStore */ 5467 case CMD_SET_AP_CONFIG: 5468 case CMD_SET_AP_CONFIG_COMPLETED: 5469 case CMD_REQUEST_AP_CONFIG: 5470 case CMD_RESPONSE_AP_CONFIG: 5471 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5472 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5473 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5474 case CMD_DISABLE_P2P_RSP: 5475 case WifiMonitor.SUP_REQUEST_IDENTITY: 5476 case CMD_TEST_NETWORK_DISCONNECT: 5477 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5478 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5479 case CMD_TARGET_BSSID: 5480 case CMD_AUTO_CONNECT: 5481 case CMD_AUTO_ROAM: 5482 case CMD_AUTO_SAVE_NETWORK: 5483 case CMD_ASSOCIATED_BSSID: 5484 case CMD_UNWANTED_NETWORK: 5485 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5486 case CMD_ROAM_WATCHDOG_TIMER: 5487 case CMD_DISABLE_EPHEMERAL_NETWORK: 5488 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5489 case CMD_STARTED_PNO_DBG: 5490 case CMD_STARTED_GSCAN_DBG: 5491 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5492 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5493 break; 5494 case DhcpStateMachine.CMD_ON_QUIT: 5495 mDhcpStateMachine = null; 5496 break; 5497 case CMD_SET_SUSPEND_OPT_ENABLED: 5498 if (message.arg1 == 1) { 5499 mSuspendWakeLock.release(); 5500 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5501 } else { 5502 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5503 } 5504 break; 5505 case WifiMonitor.DRIVER_HUNG_EVENT: 5506 setSupplicantRunning(false); 5507 setSupplicantRunning(true); 5508 break; 5509 case WifiManager.CONNECT_NETWORK: 5510 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5511 WifiManager.BUSY); 5512 break; 5513 case WifiManager.FORGET_NETWORK: 5514 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5515 WifiManager.BUSY); 5516 break; 5517 case WifiManager.SAVE_NETWORK: 5518 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5519 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5520 WifiManager.BUSY); 5521 break; 5522 case WifiManager.START_WPS: 5523 replyToMessage(message, WifiManager.WPS_FAILED, 5524 WifiManager.BUSY); 5525 break; 5526 case WifiManager.CANCEL_WPS: 5527 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5528 WifiManager.BUSY); 5529 break; 5530 case WifiManager.DISABLE_NETWORK: 5531 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5532 WifiManager.BUSY); 5533 break; 5534 case WifiManager.RSSI_PKTCNT_FETCH: 5535 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5536 WifiManager.BUSY); 5537 break; 5538 case CMD_GET_SUPPORTED_FEATURES: 5539 int featureSet = WifiNative.getSupportedFeatureSet(); 5540 replyToMessage(message, message.what, featureSet); 5541 break; 5542 case CMD_FIRMWARE_ALERT: 5543 if (mWifiLogger != null) { 5544 byte[] buffer = (byte[])message.obj; 5545 mWifiLogger.captureAlertData(message.arg1, buffer); 5546 } 5547 break; 5548 case CMD_GET_LINK_LAYER_STATS: 5549 // Not supported hence reply with error message 5550 replyToMessage(message, message.what, null); 5551 break; 5552 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5553 NetworkInfo info = (NetworkInfo) message.obj; 5554 mP2pConnected.set(info.isConnected()); 5555 break; 5556 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5557 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5558 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5559 break; 5560 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5561 case CMD_UPDATE_LINKPROPERTIES: 5562 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5563 break; 5564 case CMD_GET_MATCHING_CONFIG: 5565 replyToMessage(message, message.what); 5566 break; 5567 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5568 case CMD_IP_CONFIGURATION_LOST: 5569 case CMD_IP_REACHABILITY_LOST: 5570 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5571 break; 5572 case CMD_GET_CONNECTION_STATISTICS: 5573 replyToMessage(message, message.what, mWifiConnectionStatistics); 5574 break; 5575 case CMD_REMOVE_APP_CONFIGURATIONS: 5576 deferMessage(message); 5577 break; 5578 case CMD_REMOVE_USER_CONFIGURATIONS: 5579 deferMessage(message); 5580 break; 5581 default: 5582 loge("Error! unhandled message" + message); 5583 break; 5584 } 5585 return HANDLED; 5586 } 5587 } 5588 5589 class InitialState extends State { 5590 @Override 5591 public void enter() { 5592 WifiNative.stopHal(); 5593 mWifiNative.unloadDriver(); 5594 if (mWifiP2pChannel == null) { 5595 mWifiP2pChannel = new AsyncChannel(); 5596 mWifiP2pChannel.connect(mContext, getHandler(), 5597 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5598 } 5599 5600 if (mWifiApConfigChannel == null) { 5601 mWifiApConfigChannel = new AsyncChannel(); 5602 mWifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5603 mContext, getHandler()); 5604 mWifiApConfigStore.loadApConfiguration(); 5605 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5606 mWifiApConfigStore.getMessenger()); 5607 } 5608 5609 if (mWifiConfigStore.enableHalBasedPno.get()) { 5610 // make sure developer Settings are in sync with the config option 5611 mHalBasedPnoEnableInDevSettings = true; 5612 } 5613 } 5614 @Override 5615 public boolean processMessage(Message message) { 5616 logStateAndMessage(message, getClass().getSimpleName()); 5617 switch (message.what) { 5618 case CMD_START_SUPPLICANT: 5619 if (mWifiNative.loadDriver()) { 5620 try { 5621 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5622 } catch (Exception e) { 5623 loge("Failed to reload STA firmware " + e); 5624 // Continue 5625 } 5626 5627 try { 5628 // A runtime crash can leave the interface up and 5629 // IP addresses configured, and this affects 5630 // connectivity when supplicant starts up. 5631 // Ensure interface is down and we have no IP 5632 // addresses before a supplicant start. 5633 mNwService.setInterfaceDown(mInterfaceName); 5634 mNwService.clearInterfaceAddresses(mInterfaceName); 5635 5636 // Set privacy extensions 5637 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5638 5639 // IPv6 is enabled only as long as access point is connected since: 5640 // - IPv6 addresses and routes stick around after disconnection 5641 // - kernel is unaware when connected and fails to start IPv6 negotiation 5642 // - kernel can start autoconfiguration when 802.1x is not complete 5643 mNwService.disableIpv6(mInterfaceName); 5644 } catch (RemoteException re) { 5645 loge("Unable to change interface settings: " + re); 5646 } catch (IllegalStateException ie) { 5647 loge("Unable to change interface settings: " + ie); 5648 } 5649 5650 /* Stop a running supplicant after a runtime restart 5651 * Avoids issues with drivers that do not handle interface down 5652 * on a running supplicant properly. 5653 */ 5654 mWifiMonitor.killSupplicant(mP2pSupported); 5655 5656 if (WifiNative.startHal() == false) { 5657 /* starting HAL is optional */ 5658 loge("Failed to start HAL"); 5659 } 5660 5661 if (mWifiNative.startSupplicant(mP2pSupported)) { 5662 setWifiState(WIFI_STATE_ENABLING); 5663 if (DBG) log("Supplicant start successful"); 5664 mWifiMonitor.startMonitoring(); 5665 transitionTo(mSupplicantStartingState); 5666 } else { 5667 loge("Failed to start supplicant!"); 5668 } 5669 } else { 5670 loge("Failed to load driver"); 5671 } 5672 break; 5673 case CMD_START_AP: 5674 if (mWifiNative.loadDriver() == false) { 5675 loge("Failed to load driver for softap"); 5676 } else { 5677 if (enableSoftAp() == true) { 5678 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5679 transitionTo(mSoftApStartingState); 5680 } else { 5681 setWifiApState(WIFI_AP_STATE_FAILED, 5682 WifiManager.SAP_START_FAILURE_GENERAL); 5683 transitionTo(mInitialState); 5684 } 5685 } 5686 break; 5687 default: 5688 return NOT_HANDLED; 5689 } 5690 return HANDLED; 5691 } 5692 } 5693 5694 class SupplicantStartingState extends State { 5695 private void initializeWpsDetails() { 5696 String detail; 5697 detail = SystemProperties.get("ro.product.name", ""); 5698 if (!mWifiNative.setDeviceName(detail)) { 5699 loge("Failed to set device name " + detail); 5700 } 5701 detail = SystemProperties.get("ro.product.manufacturer", ""); 5702 if (!mWifiNative.setManufacturer(detail)) { 5703 loge("Failed to set manufacturer " + detail); 5704 } 5705 detail = SystemProperties.get("ro.product.model", ""); 5706 if (!mWifiNative.setModelName(detail)) { 5707 loge("Failed to set model name " + detail); 5708 } 5709 detail = SystemProperties.get("ro.product.model", ""); 5710 if (!mWifiNative.setModelNumber(detail)) { 5711 loge("Failed to set model number " + detail); 5712 } 5713 detail = SystemProperties.get("ro.serialno", ""); 5714 if (!mWifiNative.setSerialNumber(detail)) { 5715 loge("Failed to set serial number " + detail); 5716 } 5717 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5718 loge("Failed to set WPS config methods"); 5719 } 5720 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5721 loge("Failed to set primary device type " + mPrimaryDeviceType); 5722 } 5723 } 5724 5725 @Override 5726 public boolean processMessage(Message message) { 5727 logStateAndMessage(message, getClass().getSimpleName()); 5728 5729 switch(message.what) { 5730 case WifiMonitor.SUP_CONNECTION_EVENT: 5731 if (DBG) log("Supplicant connection established"); 5732 setWifiState(WIFI_STATE_ENABLED); 5733 mSupplicantRestartCount = 0; 5734 /* Reset the supplicant state to indicate the supplicant 5735 * state is not known at this time */ 5736 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5737 /* Initialize data structures */ 5738 mLastBssid = null; 5739 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5740 mLastSignalLevel = -1; 5741 5742 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5743 mWifiNative.enableSaveConfig(); 5744 mWifiConfigStore.loadAndEnableAllNetworks(); 5745 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5746 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5747 } 5748 initializeWpsDetails(); 5749 5750 sendSupplicantConnectionChangedBroadcast(true); 5751 transitionTo(mDriverStartedState); 5752 break; 5753 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5754 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5755 loge("Failed to setup control channel, restart supplicant"); 5756 mWifiMonitor.killSupplicant(mP2pSupported); 5757 transitionTo(mInitialState); 5758 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5759 } else { 5760 loge("Failed " + mSupplicantRestartCount + 5761 " times to start supplicant, unload driver"); 5762 mSupplicantRestartCount = 0; 5763 setWifiState(WIFI_STATE_UNKNOWN); 5764 transitionTo(mInitialState); 5765 } 5766 break; 5767 case CMD_START_SUPPLICANT: 5768 case CMD_STOP_SUPPLICANT: 5769 case CMD_START_AP: 5770 case CMD_STOP_AP: 5771 case CMD_START_DRIVER: 5772 case CMD_STOP_DRIVER: 5773 case CMD_SET_OPERATIONAL_MODE: 5774 case CMD_SET_COUNTRY_CODE: 5775 case CMD_SET_FREQUENCY_BAND: 5776 case CMD_START_PACKET_FILTERING: 5777 case CMD_STOP_PACKET_FILTERING: 5778 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5779 deferMessage(message); 5780 break; 5781 default: 5782 return NOT_HANDLED; 5783 } 5784 return HANDLED; 5785 } 5786 } 5787 5788 class SupplicantStartedState extends State { 5789 @Override 5790 public void enter() { 5791 /* Wifi is available as long as we have a connection to supplicant */ 5792 mNetworkInfo.setIsAvailable(true); 5793 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5794 5795 int defaultInterval = mContext.getResources().getInteger( 5796 R.integer.config_wifi_supplicant_scan_interval); 5797 5798 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5799 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5800 defaultInterval); 5801 5802 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5803 mWifiNative.setExternalSim(true); 5804 5805 /* turn on use of DFS channels */ 5806 WifiNative.setDfsFlag(true); 5807 5808 /* set country code */ 5809 setCountryCode(); 5810 5811 setRandomMacOui(); 5812 mWifiNative.enableAutoConnect(false); 5813 } 5814 5815 @Override 5816 public boolean processMessage(Message message) { 5817 logStateAndMessage(message, getClass().getSimpleName()); 5818 5819 switch(message.what) { 5820 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5821 if (mP2pSupported) { 5822 transitionTo(mWaitForP2pDisableState); 5823 } else { 5824 transitionTo(mSupplicantStoppingState); 5825 } 5826 break; 5827 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5828 loge("Connection lost, restart supplicant"); 5829 handleSupplicantConnectionLoss(true); 5830 handleNetworkDisconnect(); 5831 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5832 if (mP2pSupported) { 5833 transitionTo(mWaitForP2pDisableState); 5834 } else { 5835 transitionTo(mInitialState); 5836 } 5837 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5838 break; 5839 case WifiMonitor.SCAN_RESULTS_EVENT: 5840 case WifiMonitor.SCAN_FAILED_EVENT: 5841 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5842 closeRadioScanStats(); 5843 noteScanEnd(); 5844 setScanResults(); 5845 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5846 /* Just updated results from full scan, let apps know about this */ 5847 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5848 sendScanResultsAvailableBroadcast(scanSucceeded); 5849 } 5850 mSendScanResultsBroadcast = false; 5851 mIsScanOngoing = false; 5852 mIsFullScanOngoing = false; 5853 if (mBufferedScanMsg.size() > 0) 5854 sendMessage(mBufferedScanMsg.remove()); 5855 break; 5856 case CMD_PING_SUPPLICANT: 5857 boolean ok = mWifiNative.ping(); 5858 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5859 break; 5860 case CMD_GET_CAPABILITY_FREQ: 5861 String freqs = mWifiNative.getFreqCapability(); 5862 replyToMessage(message, message.what, freqs); 5863 break; 5864 case CMD_START_AP: 5865 /* Cannot start soft AP while in client mode */ 5866 loge("Failed to start soft AP with a running supplicant"); 5867 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 5868 break; 5869 case CMD_SET_OPERATIONAL_MODE: 5870 mOperationalMode = message.arg1; 5871 mWifiConfigStore. 5872 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5873 break; 5874 case CMD_TARGET_BSSID: 5875 // Trying to associate to this BSSID 5876 if (message.obj != null) { 5877 mTargetRoamBSSID = (String) message.obj; 5878 } 5879 break; 5880 case CMD_GET_LINK_LAYER_STATS: 5881 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5882 if (stats == null) { 5883 // When firmware doesnt support link layer stats, return an empty object 5884 stats = new WifiLinkLayerStats(); 5885 } 5886 replyToMessage(message, message.what, stats); 5887 break; 5888 case CMD_SET_COUNTRY_CODE: 5889 String country = (String) message.obj; 5890 5891 final boolean persist = (message.arg2 == 1); 5892 final int sequence = message.arg1; 5893 5894 if (sequence != mCountryCodeSequence.get()) { 5895 if (DBG) log("set country code ignored due to sequnce num"); 5896 break; 5897 } 5898 if (DBG) log("set country code " + country); 5899 country = country.toUpperCase(Locale.ROOT); 5900 5901 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5902 if (mWifiNative.setCountryCode(country)) { 5903 mDriverSetCountryCode = country; 5904 } else { 5905 loge("Failed to set country code " + country); 5906 } 5907 } 5908 5909 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5910 break; 5911 default: 5912 return NOT_HANDLED; 5913 } 5914 return HANDLED; 5915 } 5916 5917 @Override 5918 public void exit() { 5919 mNetworkInfo.setIsAvailable(false); 5920 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5921 } 5922 } 5923 5924 class SupplicantStoppingState extends State { 5925 @Override 5926 public void enter() { 5927 /* Send any reset commands to supplicant before shutting it down */ 5928 handleNetworkDisconnect(); 5929 if (mDhcpStateMachine != null) { 5930 mDhcpStateMachine.doQuit(); 5931 } 5932 5933 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5934 if (suppState == null) suppState = "unknown"; 5935 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5936 if (p2pSuppState == null) p2pSuppState = "unknown"; 5937 5938 logd("SupplicantStoppingState: stopSupplicant " 5939 + " init.svc.wpa_supplicant=" + suppState 5940 + " init.svc.p2p_supplicant=" + p2pSuppState); 5941 mWifiMonitor.stopSupplicant(); 5942 5943 /* Send ourselves a delayed message to indicate failure after a wait time */ 5944 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5945 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5946 setWifiState(WIFI_STATE_DISABLING); 5947 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5948 } 5949 @Override 5950 public boolean processMessage(Message message) { 5951 logStateAndMessage(message, getClass().getSimpleName()); 5952 5953 switch(message.what) { 5954 case WifiMonitor.SUP_CONNECTION_EVENT: 5955 loge("Supplicant connection received while stopping"); 5956 break; 5957 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5958 if (DBG) log("Supplicant connection lost"); 5959 handleSupplicantConnectionLoss(false); 5960 transitionTo(mInitialState); 5961 break; 5962 case CMD_STOP_SUPPLICANT_FAILED: 5963 if (message.arg1 == mSupplicantStopFailureToken) { 5964 loge("Timed out on a supplicant stop, kill and proceed"); 5965 handleSupplicantConnectionLoss(true); 5966 transitionTo(mInitialState); 5967 } 5968 break; 5969 case CMD_START_SUPPLICANT: 5970 case CMD_STOP_SUPPLICANT: 5971 case CMD_START_AP: 5972 case CMD_STOP_AP: 5973 case CMD_START_DRIVER: 5974 case CMD_STOP_DRIVER: 5975 case CMD_SET_OPERATIONAL_MODE: 5976 case CMD_SET_COUNTRY_CODE: 5977 case CMD_SET_FREQUENCY_BAND: 5978 case CMD_START_PACKET_FILTERING: 5979 case CMD_STOP_PACKET_FILTERING: 5980 deferMessage(message); 5981 break; 5982 default: 5983 return NOT_HANDLED; 5984 } 5985 return HANDLED; 5986 } 5987 } 5988 5989 class DriverStartingState extends State { 5990 private int mTries; 5991 @Override 5992 public void enter() { 5993 mTries = 1; 5994 /* Send ourselves a delayed message to start driver a second time */ 5995 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5996 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5997 } 5998 @Override 5999 public boolean processMessage(Message message) { 6000 logStateAndMessage(message, getClass().getSimpleName()); 6001 6002 switch(message.what) { 6003 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6004 SupplicantState state = handleSupplicantStateChange(message); 6005 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6006 * a state that indicates driver has started, it is ready to 6007 * receive driver commands 6008 */ 6009 if (SupplicantState.isDriverActive(state)) { 6010 transitionTo(mDriverStartedState); 6011 } 6012 break; 6013 case CMD_DRIVER_START_TIMED_OUT: 6014 if (message.arg1 == mDriverStartToken) { 6015 if (mTries >= 2) { 6016 loge("Failed to start driver after " + mTries); 6017 transitionTo(mDriverStoppedState); 6018 } else { 6019 loge("Driver start failed, retrying"); 6020 mWakeLock.acquire(); 6021 mWifiNative.startDriver(); 6022 mWakeLock.release(); 6023 6024 ++mTries; 6025 /* Send ourselves a delayed message to start driver again */ 6026 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6027 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6028 } 6029 } 6030 break; 6031 /* Queue driver commands & connection events */ 6032 case CMD_START_DRIVER: 6033 case CMD_STOP_DRIVER: 6034 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6035 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6036 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6037 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6038 case WifiMonitor.WPS_OVERLAP_EVENT: 6039 case CMD_SET_COUNTRY_CODE: 6040 case CMD_SET_FREQUENCY_BAND: 6041 case CMD_START_PACKET_FILTERING: 6042 case CMD_STOP_PACKET_FILTERING: 6043 case CMD_START_SCAN: 6044 case CMD_DISCONNECT: 6045 case CMD_REASSOCIATE: 6046 case CMD_RECONNECT: 6047 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6048 deferMessage(message); 6049 break; 6050 case WifiMonitor.SCAN_RESULTS_EVENT: 6051 case WifiMonitor.SCAN_FAILED_EVENT: 6052 // Loose scan results obtained in Driver Starting state, they can only confuse 6053 // the state machine 6054 break; 6055 default: 6056 return NOT_HANDLED; 6057 } 6058 return HANDLED; 6059 } 6060 } 6061 6062 class DriverStartedState extends State { 6063 @Override 6064 public void enter() { 6065 6066 if (PDBG) { 6067 logd("DriverStartedState enter"); 6068 } 6069 6070 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6071 mIsRunning = true; 6072 mInDelayedStop = false; 6073 mDelayedStopCounter++; 6074 updateBatteryWorkSource(null); 6075 /** 6076 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6077 * When this mode is on, some of the low-level scan parameters used by the 6078 * driver are changed to reduce interference with bluetooth 6079 */ 6080 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6081 /* set frequency band of operation */ 6082 setFrequencyBand(); 6083 /* initialize network state */ 6084 setNetworkDetailedState(DetailedState.DISCONNECTED); 6085 6086 /* Remove any filtering on Multicast v6 at start */ 6087 mWifiNative.stopFilteringMulticastV6Packets(); 6088 6089 /* Reset Multicast v4 filtering state */ 6090 if (mFilteringMulticastV4Packets.get()) { 6091 mWifiNative.startFilteringMulticastV4Packets(); 6092 } else { 6093 mWifiNative.stopFilteringMulticastV4Packets(); 6094 } 6095 6096 mDhcpActive = false; 6097 6098 if (mOperationalMode != CONNECT_MODE) { 6099 mWifiNative.disconnect(); 6100 mWifiConfigStore.disableAllNetworks(); 6101 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6102 setWifiState(WIFI_STATE_DISABLED); 6103 } 6104 transitionTo(mScanModeState); 6105 } else { 6106 6107 // Status pulls in the current supplicant state and network connection state 6108 // events over the monitor connection. This helps framework sync up with 6109 // current supplicant state 6110 // TODO: actually check th supplicant status string and make sure the supplicant 6111 // is in disconnecte4d state. 6112 mWifiNative.status(); 6113 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6114 transitionTo(mDisconnectedState); 6115 transitionTo(mDisconnectedState); 6116 } 6117 6118 // We may have missed screen update at boot 6119 if (mScreenBroadcastReceived.get() == false) { 6120 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6121 Context.POWER_SERVICE); 6122 handleScreenStateChanged(powerManager.isScreenOn()); 6123 } else { 6124 // Set the right suspend mode settings 6125 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6126 && mUserWantsSuspendOpt.get()); 6127 } 6128 mWifiNative.setPowerSave(true); 6129 6130 if (mP2pSupported) { 6131 if (mOperationalMode == CONNECT_MODE) { 6132 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6133 } else { 6134 // P2P statemachine starts in disabled state, and is not enabled until 6135 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6136 // keep it disabled. 6137 } 6138 } 6139 6140 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6141 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6142 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6143 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6144 6145 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6146 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6147 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6148 mHalBasedPnoDriverSupported = true; 6149 } 6150 6151 // Enable link layer stats gathering 6152 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6153 6154 if (PDBG) { 6155 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6156 + " feature=" + mHalFeatureSet); 6157 } 6158 } 6159 6160 @Override 6161 public boolean processMessage(Message message) { 6162 logStateAndMessage(message, getClass().getSimpleName()); 6163 6164 switch(message.what) { 6165 case CMD_START_SCAN: 6166 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6167 break; 6168 case CMD_SET_FREQUENCY_BAND: 6169 int band = message.arg1; 6170 if (DBG) log("set frequency band " + band); 6171 if (mWifiNative.setBand(band)) { 6172 6173 if (PDBG) logd("did set frequency band " + band); 6174 6175 mFrequencyBand.set(band); 6176 // Flush old data - like scan results 6177 mWifiNative.bssFlush(); 6178 // Fetch the latest scan results when frequency band is set 6179// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6180 6181 if (PDBG) logd("done set frequency band " + band); 6182 6183 } else { 6184 loge("Failed to set frequency band " + band); 6185 } 6186 break; 6187 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6188 mBluetoothConnectionActive = (message.arg1 != 6189 BluetoothAdapter.STATE_DISCONNECTED); 6190 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6191 break; 6192 case CMD_STOP_DRIVER: 6193 int mode = message.arg1; 6194 6195 /* Already doing a delayed stop */ 6196 if (mInDelayedStop) { 6197 if (DBG) log("Already in delayed stop"); 6198 break; 6199 } 6200 /* disconnect right now, but leave the driver running for a bit */ 6201 mWifiConfigStore.disableAllNetworks(); 6202 6203 mInDelayedStop = true; 6204 mDelayedStopCounter++; 6205 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6206 6207 /* send regular delayed shut down */ 6208 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6209 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 6210 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6211 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6212 DRIVER_STOP_REQUEST, driverStopIntent, 6213 PendingIntent.FLAG_UPDATE_CURRENT); 6214 6215 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6216 + mDriverStopDelayMs, mDriverStopIntent); 6217 break; 6218 case CMD_START_DRIVER: 6219 if (mInDelayedStop) { 6220 mInDelayedStop = false; 6221 mDelayedStopCounter++; 6222 mAlarmManager.cancel(mDriverStopIntent); 6223 if (DBG) log("Delayed stop ignored due to start"); 6224 if (mOperationalMode == CONNECT_MODE) { 6225 mWifiConfigStore.enableAllNetworks(); 6226 } 6227 } 6228 break; 6229 case CMD_DELAYED_STOP_DRIVER: 6230 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6231 if (message.arg1 != mDelayedStopCounter) break; 6232 if (getCurrentState() != mDisconnectedState) { 6233 mWifiNative.disconnect(); 6234 handleNetworkDisconnect(); 6235 } 6236 mWakeLock.acquire(); 6237 mWifiNative.stopDriver(); 6238 mWakeLock.release(); 6239 if (mP2pSupported) { 6240 transitionTo(mWaitForP2pDisableState); 6241 } else { 6242 transitionTo(mDriverStoppingState); 6243 } 6244 break; 6245 case CMD_START_PACKET_FILTERING: 6246 if (message.arg1 == MULTICAST_V6) { 6247 mWifiNative.startFilteringMulticastV6Packets(); 6248 } else if (message.arg1 == MULTICAST_V4) { 6249 mWifiNative.startFilteringMulticastV4Packets(); 6250 } else { 6251 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6252 } 6253 break; 6254 case CMD_STOP_PACKET_FILTERING: 6255 if (message.arg1 == MULTICAST_V6) { 6256 mWifiNative.stopFilteringMulticastV6Packets(); 6257 } else if (message.arg1 == MULTICAST_V4) { 6258 mWifiNative.stopFilteringMulticastV4Packets(); 6259 } else { 6260 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6261 } 6262 break; 6263 case CMD_SET_SUSPEND_OPT_ENABLED: 6264 if (message.arg1 == 1) { 6265 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6266 mSuspendWakeLock.release(); 6267 } else { 6268 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6269 } 6270 break; 6271 case CMD_SET_HIGH_PERF_MODE: 6272 if (message.arg1 == 1) { 6273 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6274 } else { 6275 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6276 } 6277 break; 6278 case CMD_ENABLE_TDLS: 6279 if (message.obj != null) { 6280 String remoteAddress = (String) message.obj; 6281 boolean enable = (message.arg1 == 1); 6282 mWifiNative.startTdls(remoteAddress, enable); 6283 } 6284 break; 6285 case WifiMonitor.ANQP_DONE_EVENT: 6286 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6287 break; 6288 default: 6289 return NOT_HANDLED; 6290 } 6291 return HANDLED; 6292 } 6293 @Override 6294 public void exit() { 6295 6296 mWifiLogger.stopLogging(); 6297 6298 mIsRunning = false; 6299 updateBatteryWorkSource(null); 6300 mScanResults = new ArrayList<>(); 6301 6302 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6303 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6304 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6305 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6306 noteScanEnd(); // wrap up any pending request. 6307 mBufferedScanMsg.clear(); 6308 } 6309 } 6310 6311 class WaitForP2pDisableState extends State { 6312 private State mTransitionToState; 6313 @Override 6314 public void enter() { 6315 switch (getCurrentMessage().what) { 6316 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6317 mTransitionToState = mInitialState; 6318 break; 6319 case CMD_DELAYED_STOP_DRIVER: 6320 mTransitionToState = mDriverStoppingState; 6321 break; 6322 case CMD_STOP_SUPPLICANT: 6323 mTransitionToState = mSupplicantStoppingState; 6324 break; 6325 default: 6326 mTransitionToState = mDriverStoppingState; 6327 break; 6328 } 6329 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6330 } 6331 @Override 6332 public boolean processMessage(Message message) { 6333 logStateAndMessage(message, getClass().getSimpleName()); 6334 6335 switch(message.what) { 6336 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6337 transitionTo(mTransitionToState); 6338 break; 6339 /* Defer wifi start/shut and driver commands */ 6340 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6341 case CMD_START_SUPPLICANT: 6342 case CMD_STOP_SUPPLICANT: 6343 case CMD_START_AP: 6344 case CMD_STOP_AP: 6345 case CMD_START_DRIVER: 6346 case CMD_STOP_DRIVER: 6347 case CMD_SET_OPERATIONAL_MODE: 6348 case CMD_SET_COUNTRY_CODE: 6349 case CMD_SET_FREQUENCY_BAND: 6350 case CMD_START_PACKET_FILTERING: 6351 case CMD_STOP_PACKET_FILTERING: 6352 case CMD_START_SCAN: 6353 case CMD_DISCONNECT: 6354 case CMD_REASSOCIATE: 6355 case CMD_RECONNECT: 6356 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6357 deferMessage(message); 6358 break; 6359 default: 6360 return NOT_HANDLED; 6361 } 6362 return HANDLED; 6363 } 6364 } 6365 6366 class DriverStoppingState extends State { 6367 @Override 6368 public boolean processMessage(Message message) { 6369 logStateAndMessage(message, getClass().getSimpleName()); 6370 6371 switch(message.what) { 6372 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6373 SupplicantState state = handleSupplicantStateChange(message); 6374 if (state == SupplicantState.INTERFACE_DISABLED) { 6375 transitionTo(mDriverStoppedState); 6376 } 6377 break; 6378 /* Queue driver commands */ 6379 case CMD_START_DRIVER: 6380 case CMD_STOP_DRIVER: 6381 case CMD_SET_COUNTRY_CODE: 6382 case CMD_SET_FREQUENCY_BAND: 6383 case CMD_START_PACKET_FILTERING: 6384 case CMD_STOP_PACKET_FILTERING: 6385 case CMD_START_SCAN: 6386 case CMD_DISCONNECT: 6387 case CMD_REASSOCIATE: 6388 case CMD_RECONNECT: 6389 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6390 deferMessage(message); 6391 break; 6392 default: 6393 return NOT_HANDLED; 6394 } 6395 return HANDLED; 6396 } 6397 } 6398 6399 class DriverStoppedState extends State { 6400 @Override 6401 public boolean processMessage(Message message) { 6402 logStateAndMessage(message, getClass().getSimpleName()); 6403 switch (message.what) { 6404 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6405 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6406 SupplicantState state = stateChangeResult.state; 6407 // A WEXT bug means that we can be back to driver started state 6408 // unexpectedly 6409 if (SupplicantState.isDriverActive(state)) { 6410 transitionTo(mDriverStartedState); 6411 } 6412 break; 6413 case CMD_START_DRIVER: 6414 mWakeLock.acquire(); 6415 mWifiNative.startDriver(); 6416 mWakeLock.release(); 6417 transitionTo(mDriverStartingState); 6418 break; 6419 default: 6420 return NOT_HANDLED; 6421 } 6422 return HANDLED; 6423 } 6424 } 6425 6426 class ScanModeState extends State { 6427 private int mLastOperationMode; 6428 @Override 6429 public void enter() { 6430 mLastOperationMode = mOperationalMode; 6431 } 6432 @Override 6433 public boolean processMessage(Message message) { 6434 logStateAndMessage(message, getClass().getSimpleName()); 6435 6436 switch(message.what) { 6437 case CMD_SET_OPERATIONAL_MODE: 6438 if (message.arg1 == CONNECT_MODE) { 6439 6440 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6441 setWifiState(WIFI_STATE_ENABLED); 6442 // Load and re-enable networks when going back to enabled state 6443 // This is essential for networks to show up after restore 6444 mWifiConfigStore.loadAndEnableAllNetworks(); 6445 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6446 } else { 6447 mWifiConfigStore.enableAllNetworks(); 6448 } 6449 6450 // Try autojoining with recent network already present in the cache 6451 // If none are found then trigger a scan which will trigger autojoin 6452 // upon reception of scan results event 6453 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6454 startScan(ENABLE_WIFI, 0, null, null); 6455 } 6456 6457 // Loose last selection choice since user toggled WiFi 6458 mWifiConfigStore. 6459 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6460 6461 mOperationalMode = CONNECT_MODE; 6462 transitionTo(mDisconnectedState); 6463 } else { 6464 // Nothing to do 6465 return HANDLED; 6466 } 6467 break; 6468 // Handle scan. All the connection related commands are 6469 // handled only in ConnectModeState 6470 case CMD_START_SCAN: 6471 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6472 break; 6473 default: 6474 return NOT_HANDLED; 6475 } 6476 return HANDLED; 6477 } 6478 } 6479 6480 6481 String smToString(Message message) { 6482 return smToString(message.what); 6483 } 6484 6485 String smToString(int what) { 6486 String s = "unknown"; 6487 switch (what) { 6488 case WifiMonitor.DRIVER_HUNG_EVENT: 6489 s = "DRIVER_HUNG_EVENT"; 6490 break; 6491 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6492 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6493 break; 6494 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6495 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6496 break; 6497 case CMD_SET_FREQUENCY_BAND: 6498 s = "CMD_SET_FREQUENCY_BAND"; 6499 break; 6500 case CMD_DELAYED_NETWORK_DISCONNECT: 6501 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6502 break; 6503 case CMD_TEST_NETWORK_DISCONNECT: 6504 s = "CMD_TEST_NETWORK_DISCONNECT"; 6505 break; 6506 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6507 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6508 break; 6509 case CMD_DISABLE_EPHEMERAL_NETWORK: 6510 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6511 break; 6512 case CMD_START_DRIVER: 6513 s = "CMD_START_DRIVER"; 6514 break; 6515 case CMD_STOP_DRIVER: 6516 s = "CMD_STOP_DRIVER"; 6517 break; 6518 case CMD_STOP_SUPPLICANT: 6519 s = "CMD_STOP_SUPPLICANT"; 6520 break; 6521 case CMD_STOP_SUPPLICANT_FAILED: 6522 s = "CMD_STOP_SUPPLICANT_FAILED"; 6523 break; 6524 case CMD_START_SUPPLICANT: 6525 s = "CMD_START_SUPPLICANT"; 6526 break; 6527 case CMD_REQUEST_AP_CONFIG: 6528 s = "CMD_REQUEST_AP_CONFIG"; 6529 break; 6530 case CMD_RESPONSE_AP_CONFIG: 6531 s = "CMD_RESPONSE_AP_CONFIG"; 6532 break; 6533 case CMD_TETHER_STATE_CHANGE: 6534 s = "CMD_TETHER_STATE_CHANGE"; 6535 break; 6536 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6537 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6538 break; 6539 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6540 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6541 break; 6542 case CMD_ADD_OR_UPDATE_NETWORK: 6543 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6544 break; 6545 case CMD_REMOVE_NETWORK: 6546 s = "CMD_REMOVE_NETWORK"; 6547 break; 6548 case CMD_ENABLE_NETWORK: 6549 s = "CMD_ENABLE_NETWORK"; 6550 break; 6551 case CMD_ENABLE_ALL_NETWORKS: 6552 s = "CMD_ENABLE_ALL_NETWORKS"; 6553 break; 6554 case CMD_AUTO_CONNECT: 6555 s = "CMD_AUTO_CONNECT"; 6556 break; 6557 case CMD_AUTO_ROAM: 6558 s = "CMD_AUTO_ROAM"; 6559 break; 6560 case CMD_AUTO_SAVE_NETWORK: 6561 s = "CMD_AUTO_SAVE_NETWORK"; 6562 break; 6563 case CMD_BOOT_COMPLETED: 6564 s = "CMD_BOOT_COMPLETED"; 6565 break; 6566 case DhcpStateMachine.CMD_START_DHCP: 6567 s = "CMD_START_DHCP"; 6568 break; 6569 case DhcpStateMachine.CMD_STOP_DHCP: 6570 s = "CMD_STOP_DHCP"; 6571 break; 6572 case DhcpStateMachine.CMD_RENEW_DHCP: 6573 s = "CMD_RENEW_DHCP"; 6574 break; 6575 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6576 s = "CMD_PRE_DHCP_ACTION"; 6577 break; 6578 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6579 s = "CMD_POST_DHCP_ACTION"; 6580 break; 6581 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6582 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6583 break; 6584 case DhcpStateMachine.CMD_ON_QUIT: 6585 s = "CMD_ON_QUIT"; 6586 break; 6587 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6588 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6589 break; 6590 case WifiManager.DISABLE_NETWORK: 6591 s = "WifiManager.DISABLE_NETWORK"; 6592 break; 6593 case CMD_BLACKLIST_NETWORK: 6594 s = "CMD_BLACKLIST_NETWORK"; 6595 break; 6596 case CMD_CLEAR_BLACKLIST: 6597 s = "CMD_CLEAR_BLACKLIST"; 6598 break; 6599 case CMD_SAVE_CONFIG: 6600 s = "CMD_SAVE_CONFIG"; 6601 break; 6602 case CMD_GET_CONFIGURED_NETWORKS: 6603 s = "CMD_GET_CONFIGURED_NETWORKS"; 6604 break; 6605 case CMD_GET_SUPPORTED_FEATURES: 6606 s = "CMD_GET_SUPPORTED_FEATURES"; 6607 break; 6608 case CMD_UNWANTED_NETWORK: 6609 s = "CMD_UNWANTED_NETWORK"; 6610 break; 6611 case CMD_NETWORK_STATUS: 6612 s = "CMD_NETWORK_STATUS"; 6613 break; 6614 case CMD_GET_LINK_LAYER_STATS: 6615 s = "CMD_GET_LINK_LAYER_STATS"; 6616 break; 6617 case CMD_GET_MATCHING_CONFIG: 6618 s = "CMD_GET_MATCHING_CONFIG"; 6619 break; 6620 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6621 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6622 break; 6623 case CMD_DISCONNECT: 6624 s = "CMD_DISCONNECT"; 6625 break; 6626 case CMD_RECONNECT: 6627 s = "CMD_RECONNECT"; 6628 break; 6629 case CMD_REASSOCIATE: 6630 s = "CMD_REASSOCIATE"; 6631 break; 6632 case CMD_GET_CONNECTION_STATISTICS: 6633 s = "CMD_GET_CONNECTION_STATISTICS"; 6634 break; 6635 case CMD_SET_HIGH_PERF_MODE: 6636 s = "CMD_SET_HIGH_PERF_MODE"; 6637 break; 6638 case CMD_SET_COUNTRY_CODE: 6639 s = "CMD_SET_COUNTRY_CODE"; 6640 break; 6641 case CMD_ENABLE_RSSI_POLL: 6642 s = "CMD_ENABLE_RSSI_POLL"; 6643 break; 6644 case CMD_RSSI_POLL: 6645 s = "CMD_RSSI_POLL"; 6646 break; 6647 case CMD_START_PACKET_FILTERING: 6648 s = "CMD_START_PACKET_FILTERING"; 6649 break; 6650 case CMD_STOP_PACKET_FILTERING: 6651 s = "CMD_STOP_PACKET_FILTERING"; 6652 break; 6653 case CMD_SET_SUSPEND_OPT_ENABLED: 6654 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6655 break; 6656 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6657 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6658 break; 6659 case CMD_UPDATE_LINKPROPERTIES: 6660 s = "CMD_UPDATE_LINKPROPERTIES"; 6661 break; 6662 case CMD_RELOAD_TLS_AND_RECONNECT: 6663 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6664 break; 6665 case WifiManager.CONNECT_NETWORK: 6666 s = "CONNECT_NETWORK"; 6667 break; 6668 case WifiManager.SAVE_NETWORK: 6669 s = "SAVE_NETWORK"; 6670 break; 6671 case WifiManager.FORGET_NETWORK: 6672 s = "FORGET_NETWORK"; 6673 break; 6674 case WifiMonitor.SUP_CONNECTION_EVENT: 6675 s = "SUP_CONNECTION_EVENT"; 6676 break; 6677 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6678 s = "SUP_DISCONNECTION_EVENT"; 6679 break; 6680 case WifiMonitor.SCAN_RESULTS_EVENT: 6681 s = "SCAN_RESULTS_EVENT"; 6682 break; 6683 case WifiMonitor.SCAN_FAILED_EVENT: 6684 s = "SCAN_FAILED_EVENT"; 6685 break; 6686 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6687 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6688 break; 6689 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6690 s = "AUTHENTICATION_FAILURE_EVENT"; 6691 break; 6692 case WifiMonitor.SSID_TEMP_DISABLED: 6693 s = "SSID_TEMP_DISABLED"; 6694 break; 6695 case WifiMonitor.SSID_REENABLED: 6696 s = "SSID_REENABLED"; 6697 break; 6698 case WifiMonitor.WPS_SUCCESS_EVENT: 6699 s = "WPS_SUCCESS_EVENT"; 6700 break; 6701 case WifiMonitor.WPS_FAIL_EVENT: 6702 s = "WPS_FAIL_EVENT"; 6703 break; 6704 case WifiMonitor.SUP_REQUEST_IDENTITY: 6705 s = "SUP_REQUEST_IDENTITY"; 6706 break; 6707 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6708 s = "NETWORK_CONNECTION_EVENT"; 6709 break; 6710 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6711 s = "NETWORK_DISCONNECTION_EVENT"; 6712 break; 6713 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6714 s = "ASSOCIATION_REJECTION_EVENT"; 6715 break; 6716 case WifiMonitor.ANQP_DONE_EVENT: 6717 s = "WifiMonitor.ANQP_DONE_EVENT"; 6718 break; 6719 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6720 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6721 break; 6722 case WifiMonitor.HS20_DEAUTH_EVENT: 6723 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6724 break; 6725 case WifiMonitor.GAS_QUERY_START_EVENT: 6726 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6727 break; 6728 case CMD_SET_OPERATIONAL_MODE: 6729 s = "CMD_SET_OPERATIONAL_MODE"; 6730 break; 6731 case CMD_START_SCAN: 6732 s = "CMD_START_SCAN"; 6733 break; 6734 case CMD_DISABLE_P2P_RSP: 6735 s = "CMD_DISABLE_P2P_RSP"; 6736 break; 6737 case CMD_DISABLE_P2P_REQ: 6738 s = "CMD_DISABLE_P2P_REQ"; 6739 break; 6740 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6741 s = "GOOD_LINK_DETECTED"; 6742 break; 6743 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6744 s = "POOR_LINK_DETECTED"; 6745 break; 6746 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6747 s = "GROUP_CREATING_TIMED_OUT"; 6748 break; 6749 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6750 s = "P2P_CONNECTION_CHANGED"; 6751 break; 6752 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6753 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6754 break; 6755 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6756 s = "P2P.SET_MIRACAST_MODE"; 6757 break; 6758 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6759 s = "P2P.BLOCK_DISCOVERY"; 6760 break; 6761 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6762 s = "P2P.SET_COUNTRY_CODE"; 6763 break; 6764 case WifiManager.CANCEL_WPS: 6765 s = "CANCEL_WPS"; 6766 break; 6767 case WifiManager.CANCEL_WPS_FAILED: 6768 s = "CANCEL_WPS_FAILED"; 6769 break; 6770 case WifiManager.CANCEL_WPS_SUCCEDED: 6771 s = "CANCEL_WPS_SUCCEDED"; 6772 break; 6773 case WifiManager.START_WPS: 6774 s = "START_WPS"; 6775 break; 6776 case WifiManager.START_WPS_SUCCEEDED: 6777 s = "START_WPS_SUCCEEDED"; 6778 break; 6779 case WifiManager.WPS_FAILED: 6780 s = "WPS_FAILED"; 6781 break; 6782 case WifiManager.WPS_COMPLETED: 6783 s = "WPS_COMPLETED"; 6784 break; 6785 case WifiManager.RSSI_PKTCNT_FETCH: 6786 s = "RSSI_PKTCNT_FETCH"; 6787 break; 6788 case CMD_IP_CONFIGURATION_LOST: 6789 s = "CMD_IP_CONFIGURATION_LOST"; 6790 break; 6791 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6792 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6793 break; 6794 case CMD_IP_REACHABILITY_LOST: 6795 s = "CMD_IP_REACHABILITY_LOST"; 6796 break; 6797 case CMD_STATIC_IP_SUCCESS: 6798 s = "CMD_STATIC_IP_SUCCESSFUL"; 6799 break; 6800 case CMD_STATIC_IP_FAILURE: 6801 s = "CMD_STATIC_IP_FAILURE"; 6802 break; 6803 case DhcpStateMachine.DHCP_SUCCESS: 6804 s = "DHCP_SUCCESS"; 6805 break; 6806 case DhcpStateMachine.DHCP_FAILURE: 6807 s = "DHCP_FAILURE"; 6808 break; 6809 case CMD_TARGET_BSSID: 6810 s = "CMD_TARGET_BSSID"; 6811 break; 6812 case CMD_ASSOCIATED_BSSID: 6813 s = "CMD_ASSOCIATED_BSSID"; 6814 break; 6815 case CMD_REMOVE_APP_CONFIGURATIONS: 6816 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6817 break; 6818 case CMD_REMOVE_USER_CONFIGURATIONS: 6819 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6820 break; 6821 case CMD_ROAM_WATCHDOG_TIMER: 6822 s = "CMD_ROAM_WATCHDOG_TIMER"; 6823 break; 6824 case CMD_SCREEN_STATE_CHANGED: 6825 s = "CMD_SCREEN_STATE_CHANGED"; 6826 break; 6827 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6828 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6829 break; 6830 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6831 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6832 break; 6833 case CMD_STARTED_PNO_DBG: 6834 s = "CMD_STARTED_PNO_DBG"; 6835 break; 6836 case CMD_STARTED_GSCAN_DBG: 6837 s = "CMD_STARTED_GSCAN_DBG"; 6838 break; 6839 case CMD_PNO_NETWORK_FOUND: 6840 s = "CMD_PNO_NETWORK_FOUND"; 6841 break; 6842 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6843 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6844 break; 6845 default: 6846 s = "what:" + Integer.toString(what); 6847 break; 6848 } 6849 return s; 6850 } 6851 6852 void registerConnected() { 6853 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6854 long now_ms = System.currentTimeMillis(); 6855 // We are switching away from this configuration, 6856 // hence record the time we were connected last 6857 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6858 if (config != null) { 6859 config.lastConnected = System.currentTimeMillis(); 6860 config.autoJoinBailedDueToLowRssi = false; 6861 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6862 config.numConnectionFailures = 0; 6863 config.numIpConfigFailures = 0; 6864 config.numAuthFailures = 0; 6865 config.numAssociation++; 6866 } 6867 mBadLinkspeedcount = 0; 6868 } 6869 } 6870 6871 void registerDisconnected() { 6872 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6873 long now_ms = System.currentTimeMillis(); 6874 // We are switching away from this configuration, 6875 // hence record the time we were connected last 6876 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6877 if (config != null) { 6878 config.lastDisconnected = System.currentTimeMillis(); 6879 if (config.ephemeral) { 6880 // Remove ephemeral WifiConfigurations from file 6881 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6882 } 6883 } 6884 } 6885 } 6886 6887 void noteWifiDisabledWhileAssociated() { 6888 // We got disabled by user while we were associated, make note of it 6889 int rssi = mWifiInfo.getRssi(); 6890 WifiConfiguration config = getCurrentWifiConfiguration(); 6891 if (getCurrentState() == mConnectedState 6892 && rssi != WifiInfo.INVALID_RSSI 6893 && config != null) { 6894 boolean is24GHz = mWifiInfo.is24GHz(); 6895 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6896 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6897 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6898 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6899 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6900 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6901 if (isBadRSSI) { 6902 // Take note that we got disabled while RSSI was Bad 6903 config.numUserTriggeredWifiDisableLowRSSI++; 6904 } else if (isLowRSSI) { 6905 // Take note that we got disabled while RSSI was Low 6906 config.numUserTriggeredWifiDisableBadRSSI++; 6907 } else if (!isHighRSSI) { 6908 // Take note that we got disabled while RSSI was Not high 6909 config.numUserTriggeredWifiDisableNotHighRSSI++; 6910 } 6911 } 6912 } 6913 6914 WifiConfiguration getCurrentWifiConfiguration() { 6915 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6916 return null; 6917 } 6918 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6919 } 6920 6921 ScanResult getCurrentScanResult() { 6922 WifiConfiguration config = getCurrentWifiConfiguration(); 6923 if (config == null) { 6924 return null; 6925 } 6926 String BSSID = mWifiInfo.getBSSID(); 6927 if (BSSID == null) { 6928 BSSID = mTargetRoamBSSID; 6929 } 6930 ScanDetailCache scanDetailCache = 6931 mWifiConfigStore.getScanDetailCache(config); 6932 6933 if (scanDetailCache == null) { 6934 return null; 6935 } 6936 6937 return scanDetailCache.get(BSSID); 6938 } 6939 6940 String getCurrentBSSID() { 6941 if (linkDebouncing) { 6942 return null; 6943 } 6944 return mLastBssid; 6945 } 6946 6947 class ConnectModeState extends State { 6948 6949 @Override 6950 public void enter() { 6951 connectScanningService(); 6952 } 6953 6954 @Override 6955 public boolean processMessage(Message message) { 6956 WifiConfiguration config; 6957 int netId; 6958 boolean ok; 6959 boolean didDisconnect; 6960 String bssid; 6961 String ssid; 6962 NetworkUpdateResult result; 6963 logStateAndMessage(message, getClass().getSimpleName()); 6964 6965 switch (message.what) { 6966 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6967 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6968 didBlackListBSSID = false; 6969 bssid = (String) message.obj; 6970 if (bssid == null || TextUtils.isEmpty(bssid)) { 6971 // If BSSID is null, use the target roam BSSID 6972 bssid = mTargetRoamBSSID; 6973 } 6974 if (bssid != null) { 6975 // If we have a BSSID, tell configStore to black list it 6976 synchronized(mScanResultCache) { 6977 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6978 (mLastNetworkId, bssid, false); 6979 } 6980 } 6981 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6982 break; 6983 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6984 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6985 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6986 break; 6987 case WifiMonitor.SSID_TEMP_DISABLED: 6988 case WifiMonitor.SSID_REENABLED: 6989 String substr = (String) message.obj; 6990 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6991 "temp-disabled" : "re-enabled"; 6992 logd("ConnectModeState SSID state=" + en + " nid=" 6993 + Integer.toString(message.arg1) + " [" + substr + "]"); 6994 synchronized(mScanResultCache) { 6995 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6996 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6997 } 6998 break; 6999 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7000 SupplicantState state = handleSupplicantStateChange(message); 7001 // A driver/firmware hang can now put the interface in a down state. 7002 // We detect the interface going down and recover from it 7003 if (!SupplicantState.isDriverActive(state)) { 7004 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7005 handleNetworkDisconnect(); 7006 } 7007 log("Detected an interface down, restart driver"); 7008 transitionTo(mDriverStoppedState); 7009 sendMessage(CMD_START_DRIVER); 7010 break; 7011 } 7012 7013 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7014 // when authentication times out after a successful connection, 7015 // we can figure this from the supplicant state. If supplicant 7016 // state is DISCONNECTED, but the mNetworkInfo says we are not 7017 // disconnected, we need to handle a disconnection 7018 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7019 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7020 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7021 handleNetworkDisconnect(); 7022 transitionTo(mDisconnectedState); 7023 } 7024 7025 // If we have COMPLETED a connection to a BSSID, start doing 7026 // DNAv4/DNAv6 -style probing for on-link neighbors of 7027 // interest (e.g. routers); harmless if none are configured. 7028 if (state == SupplicantState.COMPLETED) { 7029 if (mIpReachabilityMonitor != null) { 7030 mIpReachabilityMonitor.probeAll(); 7031 } 7032 } 7033 break; 7034 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7035 if (message.arg1 == 1) { 7036 mWifiNative.disconnect(); 7037 mTemporarilyDisconnectWifi = true; 7038 } else { 7039 mWifiNative.reconnect(); 7040 mTemporarilyDisconnectWifi = false; 7041 } 7042 break; 7043 case CMD_ADD_OR_UPDATE_NETWORK: 7044 config = (WifiConfiguration) message.obj; 7045 7046 if (!recordUidIfAuthorized(config, message.sendingUid, 7047 /* onlyAnnotate */ false)) { 7048 logw("Not authorized to update network " 7049 + " config=" + config.SSID 7050 + " cnid=" + config.networkId 7051 + " uid=" + message.sendingUid); 7052 replyToMessage(message, message.what, FAILURE); 7053 break; 7054 } 7055 7056 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7057 if (res < 0) { 7058 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7059 } else { 7060 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7061 if (curConfig != null && config != null) { 7062 if (curConfig.priority < config.priority 7063 && config.status == WifiConfiguration.Status.ENABLED) { 7064 // Interpret this as a connect attempt 7065 // Set the last selected configuration so as to allow the system to 7066 // stick the last user choice without persisting the choice 7067 mWifiConfigStore.setLastSelectedConfiguration(res); 7068 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7069 mWifiConfigStore.writeKnownNetworkHistory(false); 7070 7071 // Remember time of last connection attempt 7072 lastConnectAttempt = System.currentTimeMillis(); 7073 7074 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7075 7076 // As a courtesy to the caller, trigger a scan now 7077 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7078 } 7079 } 7080 } 7081 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7082 break; 7083 case CMD_REMOVE_NETWORK: 7084 netId = message.arg1; 7085 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7086 /* onlyAnnotate */ false)) { 7087 logw("Not authorized to remove network " 7088 + " cnid=" + netId 7089 + " uid=" + message.sendingUid); 7090 replyToMessage(message, message.what, FAILURE); 7091 break; 7092 } 7093 7094 ok = mWifiConfigStore.removeNetwork(message.arg1); 7095 if (!ok) { 7096 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7097 } 7098 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7099 break; 7100 case CMD_ENABLE_NETWORK: 7101 boolean others = message.arg2 == 1; 7102 // Tell autojoin the user did try to select to that network 7103 // However, do NOT persist the choice by bumping the priority of the network 7104 if (others) { 7105 mWifiAutoJoinController. 7106 updateConfigurationHistory(message.arg1, true, false); 7107 // Set the last selected configuration so as to allow the system to 7108 // stick the last user choice without persisting the choice 7109 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 7110 7111 // Remember time of last connection attempt 7112 lastConnectAttempt = System.currentTimeMillis(); 7113 7114 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7115 } 7116 // Cancel auto roam requests 7117 autoRoamSetBSSID(message.arg1, "any"); 7118 7119 int uid = message.sendingUid; 7120 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1, uid); 7121 if (!ok) { 7122 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7123 } 7124 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7125 break; 7126 case CMD_ENABLE_ALL_NETWORKS: 7127 long time = android.os.SystemClock.elapsedRealtime(); 7128 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7129 mWifiConfigStore.enableAllNetworks(); 7130 mLastEnableAllNetworksTime = time; 7131 } 7132 break; 7133 case WifiManager.DISABLE_NETWORK: 7134 if (mWifiConfigStore.disableNetwork(message.arg1, 7135 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7136 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7137 } else { 7138 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7139 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7140 WifiManager.ERROR); 7141 } 7142 break; 7143 case CMD_DISABLE_EPHEMERAL_NETWORK: 7144 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7145 if (config != null) { 7146 if (config.networkId == mLastNetworkId) { 7147 // Disconnect and let autojoin reselect a new network 7148 sendMessage(CMD_DISCONNECT); 7149 } 7150 } 7151 break; 7152 case CMD_BLACKLIST_NETWORK: 7153 mWifiConfigStore.blackListBssid((String) message.obj); 7154 break; 7155 case CMD_CLEAR_BLACKLIST: 7156 mWifiConfigStore.clearBssidBlacklist(); 7157 break; 7158 case CMD_SAVE_CONFIG: 7159 ok = mWifiConfigStore.saveConfig(); 7160 7161 if (DBG) logd("did save config " + ok); 7162 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7163 7164 // Inform the backup manager about a data change 7165 IBackupManager ibm = IBackupManager.Stub.asInterface( 7166 ServiceManager.getService(Context.BACKUP_SERVICE)); 7167 if (ibm != null) { 7168 try { 7169 ibm.dataChanged("com.android.providers.settings"); 7170 } catch (Exception e) { 7171 // Try again later 7172 } 7173 } 7174 break; 7175 case CMD_GET_CONFIGURED_NETWORKS: 7176 replyToMessage(message, message.what, 7177 mWifiConfigStore.getConfiguredNetworks()); 7178 break; 7179 case WifiMonitor.SUP_REQUEST_IDENTITY: 7180 int networkId = message.arg2; 7181 boolean identitySent = false; 7182 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7183 7184 if (targetWificonfiguration != null 7185 && targetWificonfiguration.enterpriseConfig != null) { 7186 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7187 } 7188 7189 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7190 if (targetWificonfiguration != null 7191 && targetWificonfiguration.networkId == networkId 7192 && targetWificonfiguration.allowedKeyManagement 7193 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7194 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7195 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7196 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7197 TelephonyManager tm = (TelephonyManager) 7198 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7199 if (tm != null) { 7200 String imsi = tm.getSubscriberId(); 7201 String mccMnc = ""; 7202 7203 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7204 mccMnc = tm.getSimOperator(); 7205 7206 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7207 7208 if (!identity.isEmpty()) { 7209 mWifiNative.simIdentityResponse(networkId, identity); 7210 identitySent = true; 7211 } 7212 } 7213 } 7214 if (!identitySent) { 7215 // Supplicant lacks credentials to connect to that network, hence black list 7216 ssid = (String) message.obj; 7217 if (targetWificonfiguration != null && ssid != null 7218 && targetWificonfiguration.SSID != null 7219 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7220 mWifiConfigStore.handleSSIDStateChange( 7221 targetWificonfiguration.networkId, false, 7222 "AUTH_FAILED no identity", null); 7223 } 7224 // Disconnect now, as we don't have any way to fullfill 7225 // the supplicant request. 7226 mWifiConfigStore.setLastSelectedConfiguration( 7227 WifiConfiguration.INVALID_NETWORK_ID); 7228 mWifiNative.disconnect(); 7229 } 7230 break; 7231 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7232 logd("Received SUP_REQUEST_SIM_AUTH"); 7233 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7234 if (requestData != null) { 7235 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7236 handleGsmAuthRequest(requestData); 7237 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7238 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7239 handle3GAuthRequest(requestData); 7240 } 7241 } else { 7242 loge("Invalid sim auth request"); 7243 } 7244 break; 7245 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7246 replyToMessage(message, message.what, 7247 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7248 break; 7249 case CMD_GET_MATCHING_CONFIG: 7250 replyToMessage(message, message.what, 7251 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7252 break; 7253 /* Do a redundant disconnect without transition */ 7254 case CMD_DISCONNECT: 7255 mWifiConfigStore.setLastSelectedConfiguration 7256 (WifiConfiguration.INVALID_NETWORK_ID); 7257 mWifiNative.disconnect(); 7258 break; 7259 case CMD_RECONNECT: 7260 mWifiAutoJoinController.attemptAutoJoin(); 7261 break; 7262 case CMD_REASSOCIATE: 7263 lastConnectAttempt = System.currentTimeMillis(); 7264 mWifiNative.reassociate(); 7265 break; 7266 case CMD_RELOAD_TLS_AND_RECONNECT: 7267 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7268 logd("Reconnecting to give a chance to un-connected TLS networks"); 7269 mWifiNative.disconnect(); 7270 lastConnectAttempt = System.currentTimeMillis(); 7271 mWifiNative.reconnect(); 7272 } 7273 break; 7274 case CMD_AUTO_ROAM: 7275 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7276 return HANDLED; 7277 case CMD_AUTO_CONNECT: 7278 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7279 * associated status to the STATUS command but somehow-someplace still thinks 7280 * it is associated and thus will ignore select/reconnect command with 7281 * following message: 7282 * "Already associated with the selected network - do nothing" 7283 * 7284 * Hence, sends a disconnect to supplicant first. 7285 */ 7286 didDisconnect = false; 7287 if (getCurrentState() != mDisconnectedState) { 7288 /** Supplicant will ignore the reconnect if we are currently associated, 7289 * hence trigger a disconnect 7290 */ 7291 didDisconnect = true; 7292 mWifiNative.disconnect(); 7293 } 7294 7295 /* connect command coming from auto-join */ 7296 config = (WifiConfiguration) message.obj; 7297 netId = message.arg1; 7298 int roam = message.arg2; 7299 logd("CMD_AUTO_CONNECT sup state " 7300 + mSupplicantStateTracker.getSupplicantStateName() 7301 + " my state " + getCurrentState().getName() 7302 + " nid=" + Integer.toString(netId) 7303 + " roam=" + Integer.toString(roam)); 7304 if (config == null) { 7305 loge("AUTO_CONNECT and no config, bail out..."); 7306 break; 7307 } 7308 7309 /* Make sure we cancel any previous roam request */ 7310 autoRoamSetBSSID(netId, config.BSSID); 7311 7312 /* Save the network config */ 7313 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7314 + " nid=" + Integer.toString(netId)); 7315 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7316 netId = result.getNetworkId(); 7317 logd("CMD_AUTO_CONNECT did save config -> " 7318 + " nid=" + Integer.toString(netId)); 7319 7320 // Since we updated the config,read it back from config store: 7321 config = mWifiConfigStore.getWifiConfiguration(netId); 7322 if (config == null) { 7323 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7324 break; 7325 } 7326 if (netId != config.networkId) { 7327 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7328 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7329 break; 7330 } 7331 7332 if (deferForUserInput(message, netId, false)) { 7333 break; 7334 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7335 WifiConfiguration.USER_BANNED) { 7336 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7337 WifiManager.NOT_AUTHORIZED); 7338 break; 7339 } 7340 7341 // Make sure the network is enabled, since supplicant will not reenable it 7342 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7343 7344 // If we're autojoining a network that the user or an app explicitly selected, 7345 // keep track of the UID that selected it. 7346 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7347 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7348 7349 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7350 lastConnectUid) && mWifiNative.reconnect()) { 7351 lastConnectAttempt = System.currentTimeMillis(); 7352 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7353 config = mWifiConfigStore.getWifiConfiguration(netId); 7354 if (config != null 7355 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7356 // If we autojoined a different config than the user selected one, 7357 // it means we could not see the last user selection, 7358 // or that the last user selection was faulty and ended up blacklisted 7359 // for some reason (in which case the user is notified with an error 7360 // message in the Wifi picker), and thus we managed to auto-join away 7361 // from the selected config. -> in that case we need to forget 7362 // the selection because we don't want to abruptly switch back to it. 7363 // 7364 // Note that the user selection is also forgotten after a period of time 7365 // during which the device has been disconnected. 7366 // The default value is 30 minutes : see the code path at bottom of 7367 // setScanResults() function. 7368 mWifiConfigStore. 7369 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7370 } 7371 mAutoRoaming = roam; 7372 if (isRoaming() || linkDebouncing) { 7373 transitionTo(mRoamingState); 7374 } else if (didDisconnect) { 7375 transitionTo(mDisconnectingState); 7376 } else { 7377 /* Already in disconnected state, nothing to change */ 7378 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7379 int delay = 60 * 1000; 7380 if (VDBG) { 7381 logd("Starting PNO alarm: " + delay); 7382 } 7383 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7384 System.currentTimeMillis() + delay, 7385 mPnoIntent); 7386 } 7387 mRestartAutoJoinOffloadCounter++; 7388 } 7389 } else { 7390 loge("Failed to connect config: " + config + " netId: " + netId); 7391 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7392 WifiManager.ERROR); 7393 break; 7394 } 7395 break; 7396 case CMD_REMOVE_APP_CONFIGURATIONS: 7397 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7398 break; 7399 case CMD_REMOVE_USER_CONFIGURATIONS: 7400 mWifiConfigStore.removeNetworksForUser(message.arg1); 7401 break; 7402 case WifiManager.CONNECT_NETWORK: 7403 /** 7404 * The connect message can contain a network id passed as arg1 on message or 7405 * or a config passed as obj on message. 7406 * For a new network, a config is passed to create and connect. 7407 * For an existing network, a network id is passed 7408 */ 7409 netId = message.arg1; 7410 config = (WifiConfiguration) message.obj; 7411 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7412 boolean updatedExisting = false; 7413 7414 /* Save the network config */ 7415 if (config != null) { 7416 // When connecting to an access point, WifiStateMachine wants to update the 7417 // relevant config with administrative data. This update should not be 7418 // considered a 'real' update, therefore lockdown by Device Owner must be 7419 // disregarded. 7420 if (!recordUidIfAuthorized(config, message.sendingUid, 7421 /* onlyAnnotate */ true)) { 7422 logw("Not authorized to update network " 7423 + " config=" + config.SSID 7424 + " cnid=" + config.networkId 7425 + " uid=" + message.sendingUid); 7426 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7427 WifiManager.NOT_AUTHORIZED); 7428 break; 7429 } 7430 7431 String configKey = config.configKey(true /* allowCached */); 7432 WifiConfiguration savedConfig = 7433 mWifiConfigStore.getWifiConfiguration(configKey); 7434 if (savedConfig != null) { 7435 // There is an existing config with this netId, but it wasn't exposed 7436 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7437 // getConfiguredNetworks). Remove those bits and update the config. 7438 config = savedConfig; 7439 logd("CONNECT_NETWORK updating existing config with id=" + 7440 config.networkId + " configKey=" + configKey); 7441 config.ephemeral = false; 7442 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7443 updatedExisting = true; 7444 } 7445 7446 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7447 netId = result.getNetworkId(); 7448 } 7449 config = mWifiConfigStore.getWifiConfiguration(netId); 7450 7451 if (config == null) { 7452 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7453 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7454 + getCurrentState().getName()); 7455 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7456 WifiManager.ERROR); 7457 break; 7458 } else { 7459 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7460 logd("CONNECT_NETWORK id=" + Integer.toString(netId) 7461 + " config=" + config.SSID 7462 + " cnid=" + config.networkId 7463 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7464 + " my state " + getCurrentState().getName() 7465 + " uid = " + message.sendingUid 7466 + wasSkipped); 7467 } 7468 7469 autoRoamSetBSSID(netId, "any"); 7470 7471 if (message.sendingUid == Process.WIFI_UID 7472 || message.sendingUid == Process.SYSTEM_UID) { 7473 // As a sanity measure, clear the BSSID in the supplicant network block. 7474 // If system or Wifi Settings want to connect, they will not 7475 // specify the BSSID. 7476 // If an app however had added a BSSID to this configuration, and the BSSID 7477 // was wrong, Then we would forever fail to connect until that BSSID 7478 // is cleaned up. 7479 clearConfigBSSID(config, "CONNECT_NETWORK"); 7480 } 7481 7482 if (deferForUserInput(message, netId, true)) { 7483 break; 7484 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7485 WifiConfiguration.USER_BANNED) { 7486 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7487 WifiManager.NOT_AUTHORIZED); 7488 break; 7489 } 7490 7491 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7492 7493 /* Tell autojoin the user did try to connect to that network if from settings */ 7494 boolean persist = 7495 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7496 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7497 7498 mWifiConfigStore.setLastSelectedConfiguration(netId); 7499 7500 didDisconnect = false; 7501 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7502 && mLastNetworkId != netId) { 7503 /** Supplicant will ignore the reconnect if we are currently associated, 7504 * hence trigger a disconnect 7505 */ 7506 didDisconnect = true; 7507 mWifiNative.disconnect(); 7508 } 7509 7510 // Make sure the network is enabled, since supplicant will not reenable it 7511 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7512 7513 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7514 message.sendingUid) && mWifiNative.reconnect()) { 7515 lastConnectAttempt = System.currentTimeMillis(); 7516 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7517 7518 /* The state tracker handles enabling networks upon completion/failure */ 7519 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7520 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7521 if (didDisconnect) { 7522 /* Expect a disconnection from the old connection */ 7523 transitionTo(mDisconnectingState); 7524 } else if (updatedExisting && getCurrentState() == mConnectedState && 7525 getCurrentWifiConfiguration().networkId == netId) { 7526 // Update the current set of network capabilities, but stay in the 7527 // current state. 7528 updateCapabilities(config); 7529 } else { 7530 /** 7531 * Directly go to disconnected state where we 7532 * process the connection events from supplicant 7533 **/ 7534 transitionTo(mDisconnectedState); 7535 } 7536 } else { 7537 loge("Failed to connect config: " + config + " netId: " + netId); 7538 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7539 WifiManager.ERROR); 7540 break; 7541 } 7542 break; 7543 case WifiManager.SAVE_NETWORK: 7544 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7545 // Fall thru 7546 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7547 lastSavedConfigurationAttempt = null; // Used for debug 7548 config = (WifiConfiguration) message.obj; 7549 if (config == null) { 7550 loge("ERROR: SAVE_NETWORK with null configuration" 7551 + mSupplicantStateTracker.getSupplicantStateName() 7552 + " my state " + getCurrentState().getName()); 7553 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7554 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7555 WifiManager.ERROR); 7556 break; 7557 } 7558 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7559 int nid = config.networkId; 7560 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7561 + " config=" + config.SSID 7562 + " nid=" + config.networkId 7563 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7564 + " my state " + getCurrentState().getName()); 7565 7566 // Only record the uid if this is user initiated 7567 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7568 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7569 /* onlyAnnotate */ false)) { 7570 logw("Not authorized to update network " 7571 + " config=" + config.SSID 7572 + " cnid=" + config.networkId 7573 + " uid=" + message.sendingUid); 7574 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7575 WifiManager.NOT_AUTHORIZED); 7576 break; 7577 } 7578 7579 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7580 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7581 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7582 if (result.hasIpChanged()) { 7583 // The currently connection configuration was changed 7584 // We switched from DHCP to static or from static to DHCP, or the 7585 // static IP address has changed. 7586 log("Reconfiguring IP on connection"); 7587 // TODO: clear addresses and disable IPv6 7588 // to simplify obtainingIpState. 7589 transitionTo(mObtainingIpState); 7590 } 7591 if (result.hasProxyChanged()) { 7592 log("Reconfiguring proxy on connection"); 7593 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7594 } 7595 } 7596 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7597 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7598 7599 if (VDBG) { 7600 logd("Success save network nid=" 7601 + Integer.toString(result.getNetworkId())); 7602 } 7603 7604 synchronized(mScanResultCache) { 7605 /** 7606 * If the command comes from WifiManager, then 7607 * tell autojoin the user did try to modify and save that network, 7608 * and interpret the SAVE_NETWORK as a request to connect 7609 */ 7610 boolean user = message.what == WifiManager.SAVE_NETWORK; 7611 7612 // Did this connect come from settings 7613 boolean persistConnect = 7614 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7615 7616 if (user) { 7617 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7618 mWifiConfigStore.writeKnownNetworkHistory(false); 7619 } 7620 7621 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7622 , user, persistConnect); 7623 mWifiAutoJoinController.attemptAutoJoin(); 7624 } 7625 } else { 7626 loge("Failed to save network"); 7627 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7628 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7629 WifiManager.ERROR); 7630 } 7631 break; 7632 case WifiManager.FORGET_NETWORK: 7633 // Debug only, remember last configuration that was forgotten 7634 WifiConfiguration toRemove 7635 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7636 if (toRemove == null) { 7637 lastForgetConfigurationAttempt = null; 7638 } else { 7639 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7640 } 7641 // check that the caller owns this network 7642 netId = message.arg1; 7643 7644 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7645 /* onlyAnnotate */ false)) { 7646 logw("Not authorized to forget network " 7647 + " cnid=" + netId 7648 + " uid=" + message.sendingUid); 7649 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7650 WifiManager.NOT_AUTHORIZED); 7651 break; 7652 } 7653 7654 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7655 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7656 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7657 (WifiConfiguration) message.obj); 7658 } else { 7659 loge("Failed to forget network"); 7660 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7661 WifiManager.ERROR); 7662 } 7663 break; 7664 case WifiManager.START_WPS: 7665 WpsInfo wpsInfo = (WpsInfo) message.obj; 7666 WpsResult wpsResult; 7667 switch (wpsInfo.setup) { 7668 case WpsInfo.PBC: 7669 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7670 break; 7671 case WpsInfo.KEYPAD: 7672 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7673 break; 7674 case WpsInfo.DISPLAY: 7675 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7676 break; 7677 default: 7678 wpsResult = new WpsResult(Status.FAILURE); 7679 loge("Invalid setup for WPS"); 7680 break; 7681 } 7682 mWifiConfigStore.setLastSelectedConfiguration 7683 (WifiConfiguration.INVALID_NETWORK_ID); 7684 if (wpsResult.status == Status.SUCCESS) { 7685 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7686 transitionTo(mWpsRunningState); 7687 } else { 7688 loge("Failed to start WPS with config " + wpsInfo.toString()); 7689 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7690 } 7691 break; 7692 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7693 if (DBG) log("Network connection established"); 7694 mLastNetworkId = message.arg1; 7695 mLastBssid = (String) message.obj; 7696 7697 mWifiInfo.setBSSID(mLastBssid); 7698 mWifiInfo.setNetworkId(mLastNetworkId); 7699 7700 sendNetworkStateChangeBroadcast(mLastBssid); 7701 transitionTo(mObtainingIpState); 7702 break; 7703 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7704 // Calling handleNetworkDisconnect here is redundant because we might already 7705 // have called it when leaving L2ConnectedState to go to disconnecting state 7706 // or thru other path 7707 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7708 // if they are valid, and only in this case call handleNEtworkDisconnect, 7709 // TODO: this should be fixed for a L MR release 7710 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7711 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7712 // at the chip etc... 7713 if (DBG) log("ConnectModeState: Network connection lost "); 7714 handleNetworkDisconnect(); 7715 transitionTo(mDisconnectedState); 7716 break; 7717 case CMD_PNO_NETWORK_FOUND: 7718 processPnoNetworkFound((ScanResult[])message.obj); 7719 break; 7720 default: 7721 return NOT_HANDLED; 7722 } 7723 return HANDLED; 7724 } 7725 } 7726 7727 private void updateCapabilities(WifiConfiguration config) { 7728 if (config.ephemeral) { 7729 mNetworkCapabilities.removeCapability( 7730 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7731 } else { 7732 mNetworkCapabilities.addCapability( 7733 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7734 } 7735 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7736 } 7737 7738 private class WifiNetworkAgent extends NetworkAgent { 7739 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7740 NetworkCapabilities nc, LinkProperties lp, int score) { 7741 super(l, c, TAG, ni, nc, lp, score); 7742 } 7743 protected void unwanted() { 7744 // Ignore if we're not the current networkAgent. 7745 if (this != mNetworkAgent) return; 7746 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7747 + Integer.toString(mWifiInfo.score)); 7748 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 7749 } 7750 7751 @Override 7752 protected void networkStatus(int status) { 7753 if (this != mNetworkAgent) return; 7754 if (status == NetworkAgent.INVALID_NETWORK) { 7755 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7756 + Integer.toString(mWifiInfo.score)); 7757 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 7758 } else if (status == NetworkAgent.VALID_NETWORK) { 7759 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7760 + Integer.toString(mWifiInfo.score)); 7761 doNetworkStatus(status); 7762 } 7763 } 7764 7765 @Override 7766 protected void saveAcceptUnvalidated(boolean accept) { 7767 if (this != mNetworkAgent) return; 7768 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7769 } 7770 7771 @Override 7772 protected void preventAutomaticReconnect() { 7773 if (this != mNetworkAgent) return; 7774 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 7775 } 7776 } 7777 7778 void unwantedNetwork(int reason) { 7779 sendMessage(CMD_UNWANTED_NETWORK, reason); 7780 } 7781 7782 void doNetworkStatus(int status) { 7783 sendMessage(CMD_NETWORK_STATUS, status); 7784 } 7785 7786 // rfc4186 & rfc4187: 7787 // create Permanent Identity base on IMSI, 7788 // identity = usernam@realm 7789 // with username = prefix | IMSI 7790 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7791 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7792 String mcc; 7793 String mnc; 7794 String prefix; 7795 7796 if (imsi == null || imsi.isEmpty()) 7797 return ""; 7798 7799 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7800 prefix = "1"; 7801 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7802 prefix = "0"; 7803 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7804 prefix = "6"; 7805 else // not a valide EapMethod 7806 return ""; 7807 7808 /* extract mcc & mnc from mccMnc */ 7809 if (mccMnc != null && !mccMnc.isEmpty()) { 7810 mcc = mccMnc.substring(0, 3); 7811 mnc = mccMnc.substring(3); 7812 if (mnc.length() == 2) 7813 mnc = "0" + mnc; 7814 } else { 7815 // extract mcc & mnc from IMSI, assume mnc size is 3 7816 mcc = imsi.substring(0, 3); 7817 mnc = imsi.substring(3, 6); 7818 } 7819 7820 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7821 } 7822 7823 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7824 if (config == null) 7825 return false; 7826 7827 // We are still seeing a fairly high power consumption triggered by autojoin scans 7828 // Hence do partial scans only for PSK configuration that are roamable since the 7829 // primary purpose of the partial scans is roaming. 7830 // Full badn scans with exponential backoff for the purpose or extended roaming and 7831 // network switching are performed unconditionally. 7832 ScanDetailCache scanDetailCache = 7833 mWifiConfigStore.getScanDetailCache(config); 7834 if (scanDetailCache == null 7835 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7836 || scanDetailCache.size() > 6) { 7837 //return true but to not trigger the scan 7838 return true; 7839 } 7840 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7841 ONE_HOUR_MILLI, restrictChannelList); 7842 if (channels != null && channels.size() != 0) { 7843 StringBuilder freqs = new StringBuilder(); 7844 boolean first = true; 7845 for (Integer channel : channels) { 7846 if (!first) 7847 freqs.append(","); 7848 freqs.append(channel.toString()); 7849 first = false; 7850 } 7851 //if (DBG) { 7852 logd("starting scan for " + config.configKey() + " with " + freqs); 7853 //} 7854 // Call wifi native to start the scan 7855 if (startScanNative( 7856 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7857 freqs.toString())) { 7858 // Only count battery consumption if scan request is accepted 7859 noteScanStart(SCAN_ALARM_SOURCE, null); 7860 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7861 } else { 7862 // used for debug only, mark scan as failed 7863 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7864 } 7865 return true; 7866 } else { 7867 if (DBG) logd("no channels for " + config.configKey()); 7868 return false; 7869 } 7870 } 7871 7872 void clearCurrentConfigBSSID(String dbg) { 7873 // Clear the bssid in the current config's network block 7874 WifiConfiguration config = getCurrentWifiConfiguration(); 7875 if (config == null) 7876 return; 7877 clearConfigBSSID(config, dbg); 7878 } 7879 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7880 if (config == null) 7881 return; 7882 if (DBG) { 7883 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7884 + " config.bssid " + config.BSSID); 7885 } 7886 config.autoJoinBSSID = "any"; 7887 config.BSSID = "any"; 7888 if (DBG) { 7889 logd(dbg + " " + config.SSID 7890 + " nid=" + Integer.toString(config.networkId)); 7891 } 7892 mWifiConfigStore.saveWifiConfigBSSID(config); 7893 } 7894 7895 class L2ConnectedState extends State { 7896 @Override 7897 public void enter() { 7898 mRssiPollToken++; 7899 if (mEnableRssiPolling) { 7900 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7901 } 7902 if (mNetworkAgent != null) { 7903 loge("Have NetworkAgent when entering L2Connected"); 7904 setNetworkDetailedState(DetailedState.DISCONNECTED); 7905 } 7906 setNetworkDetailedState(DetailedState.CONNECTING); 7907 7908 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 7909 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7910 } 7911 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7912 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7913 mLinkProperties, 60); 7914 7915 // We must clear the config BSSID, as the wifi chipset may decide to roam 7916 // from this point on and having the BSSID specified in the network block would 7917 // cause the roam to faile and the device to disconnect 7918 clearCurrentConfigBSSID("L2ConnectedState"); 7919 7920 try { 7921 mIpReachabilityMonitor = new IpReachabilityMonitor( 7922 mInterfaceName, 7923 new IpReachabilityMonitor.Callback() { 7924 @Override 7925 public void notifyLost(InetAddress ip, String logMsg) { 7926 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 7927 } 7928 }); 7929 } catch (IllegalArgumentException e) { 7930 Log.wtf("Failed to create IpReachabilityMonitor", e); 7931 } 7932 } 7933 7934 @Override 7935 public void exit() { 7936 if (mIpReachabilityMonitor != null) { 7937 mIpReachabilityMonitor.stop(); 7938 mIpReachabilityMonitor = null; 7939 } 7940 7941 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7942 // Bug: 15347363 7943 // For paranoia's sake, call handleNetworkDisconnect 7944 // only if BSSID is null or last networkId 7945 // is not invalid. 7946 if (DBG) { 7947 StringBuilder sb = new StringBuilder(); 7948 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7949 if (mLastBssid !=null) { 7950 sb.append(" ").append(mLastBssid); 7951 } 7952 } 7953 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7954 handleNetworkDisconnect(); 7955 } 7956 } 7957 7958 @Override 7959 public boolean processMessage(Message message) { 7960 logStateAndMessage(message, getClass().getSimpleName()); 7961 7962 switch (message.what) { 7963 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7964 handlePreDhcpSetup(); 7965 break; 7966 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7967 handlePostDhcpSetup(); 7968 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7969 if (DBG) log("DHCP successful"); 7970 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7971 // We advance to mConnectedState because handleIPv4Success will call 7972 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7973 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7974 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 7975 if (DBG) { 7976 int count = -1; 7977 WifiConfiguration config = getCurrentWifiConfiguration(); 7978 if (config != null) { 7979 count = config.numConnectionFailures; 7980 } 7981 log("DHCP failure count=" + count); 7982 } 7983 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7984 // As above, we transition to mDisconnectingState via updateLinkProperties. 7985 } 7986 break; 7987 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7988 handleSuccessfulIpConfiguration(); 7989 sendConnectedState(); 7990 transitionTo(mConnectedState); 7991 break; 7992 case CMD_IP_CONFIGURATION_LOST: 7993 // Get Link layer stats so that we get fresh tx packet counters. 7994 getWifiLinkLayerStats(true); 7995 handleIpConfigurationLost(); 7996 transitionTo(mDisconnectingState); 7997 break; 7998 case CMD_IP_REACHABILITY_LOST: 7999 if (DBG && message.obj != null) log((String) message.obj); 8000 handleIpReachabilityLost(); 8001 transitionTo(mDisconnectingState); 8002 break; 8003 case CMD_DISCONNECT: 8004 mWifiNative.disconnect(); 8005 transitionTo(mDisconnectingState); 8006 break; 8007 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8008 if (message.arg1 == 1) { 8009 mWifiNative.disconnect(); 8010 mTemporarilyDisconnectWifi = true; 8011 transitionTo(mDisconnectingState); 8012 } 8013 break; 8014 case CMD_SET_OPERATIONAL_MODE: 8015 if (message.arg1 != CONNECT_MODE) { 8016 sendMessage(CMD_DISCONNECT); 8017 deferMessage(message); 8018 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8019 noteWifiDisabledWhileAssociated(); 8020 } 8021 } 8022 mWifiConfigStore. 8023 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8024 break; 8025 case CMD_SET_COUNTRY_CODE: 8026 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8027 deferMessage(message); 8028 break; 8029 case CMD_START_SCAN: 8030 if (DBG) { 8031 logd("CMD_START_SCAN source " + message.arg1 8032 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8033 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8034 + " targetRoamBSSID=" + mTargetRoamBSSID 8035 + " RSSI=" + mWifiInfo.getRssi()); 8036 } 8037 if (message.arg1 == SCAN_ALARM_SOURCE) { 8038 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8039 // not be processed) and restart the scan if neede 8040 if (!getEnableAutoJoinWhenAssociated()) { 8041 return HANDLED; 8042 } 8043 boolean shouldScan = mScreenOn; 8044 8045 if (!checkAndRestartDelayedScan(message.arg2, 8046 shouldScan, 8047 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8048 null, null)) { 8049 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8050 logd("L2Connected CMD_START_SCAN source " 8051 + message.arg1 8052 + " " + message.arg2 + ", " + mDelayedScanCounter 8053 + " -> obsolete"); 8054 return HANDLED; 8055 } 8056 if (mP2pConnected.get()) { 8057 logd("L2Connected CMD_START_SCAN source " 8058 + message.arg1 8059 + " " + message.arg2 + ", " + mDelayedScanCounter 8060 + " ignore because P2P is connected"); 8061 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8062 return HANDLED; 8063 } 8064 boolean tryFullBandScan = false; 8065 boolean restrictChannelList = false; 8066 long now_ms = System.currentTimeMillis(); 8067 if (DBG) { 8068 logd("CMD_START_SCAN with age=" 8069 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8070 + " interval=" + fullBandConnectedTimeIntervalMilli 8071 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8072 } 8073 if (mWifiInfo != null) { 8074 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8075 (now_ms - lastFullBandConnectedTimeMilli) 8076 > fullBandConnectedTimeIntervalMilli) { 8077 if (DBG) { 8078 logd("CMD_START_SCAN try full band scan age=" 8079 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8080 + " interval=" + fullBandConnectedTimeIntervalMilli 8081 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8082 } 8083 tryFullBandScan = true; 8084 } 8085 8086 if (mWifiInfo.txSuccessRate > 8087 mWifiConfigStore.maxTxPacketForFullScans 8088 || mWifiInfo.rxSuccessRate > 8089 mWifiConfigStore.maxRxPacketForFullScans) { 8090 // Too much traffic at the interface, hence no full band scan 8091 if (DBG) { 8092 logd("CMD_START_SCAN " + 8093 "prevent full band scan due to pkt rate"); 8094 } 8095 tryFullBandScan = false; 8096 } 8097 8098 if (mWifiInfo.txSuccessRate > 8099 mWifiConfigStore.maxTxPacketForPartialScans 8100 || mWifiInfo.rxSuccessRate > 8101 mWifiConfigStore.maxRxPacketForPartialScans) { 8102 // Don't scan if lots of packets are being sent 8103 restrictChannelList = true; 8104 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8105 if (DBG) { 8106 logd("CMD_START_SCAN source " + message.arg1 8107 + " ...and ignore scans" 8108 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8109 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8110 } 8111 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8112 return HANDLED; 8113 } 8114 } 8115 } 8116 8117 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8118 if (DBG) { 8119 logd("CMD_START_SCAN full=" + 8120 tryFullBandScan); 8121 } 8122 if (currentConfiguration != null) { 8123 if (fullBandConnectedTimeIntervalMilli 8124 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8125 // Sanity 8126 fullBandConnectedTimeIntervalMilli 8127 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8128 } 8129 if (tryFullBandScan) { 8130 lastFullBandConnectedTimeMilli = now_ms; 8131 if (fullBandConnectedTimeIntervalMilli 8132 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8133 // Increase the interval 8134 fullBandConnectedTimeIntervalMilli 8135 = fullBandConnectedTimeIntervalMilli 8136 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8137 8138 if (DBG) { 8139 logd("CMD_START_SCAN bump interval =" 8140 + fullBandConnectedTimeIntervalMilli); 8141 } 8142 } 8143 handleScanRequest( 8144 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8145 } else { 8146 if (!startScanForConfiguration( 8147 currentConfiguration, restrictChannelList)) { 8148 if (DBG) { 8149 logd("starting scan, " + 8150 " did not find channels -> full"); 8151 } 8152 lastFullBandConnectedTimeMilli = now_ms; 8153 if (fullBandConnectedTimeIntervalMilli 8154 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8155 // Increase the interval 8156 fullBandConnectedTimeIntervalMilli 8157 = fullBandConnectedTimeIntervalMilli 8158 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8159 8160 if (DBG) { 8161 logd("CMD_START_SCAN bump interval =" 8162 + fullBandConnectedTimeIntervalMilli); 8163 } 8164 } 8165 handleScanRequest( 8166 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8167 } 8168 } 8169 8170 } else { 8171 logd("CMD_START_SCAN : connected mode and no configuration"); 8172 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8173 } 8174 } else { 8175 // Not scan alarm source 8176 return NOT_HANDLED; 8177 } 8178 break; 8179 /* Ignore connection to same network */ 8180 case WifiManager.CONNECT_NETWORK: 8181 int netId = message.arg1; 8182 if (mWifiInfo.getNetworkId() == netId) { 8183 break; 8184 } 8185 return NOT_HANDLED; 8186 /* Ignore */ 8187 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8188 break; 8189 case CMD_RSSI_POLL: 8190 if (message.arg1 == mRssiPollToken) { 8191 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8192 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8193 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8194 if (stats != null) { 8195 // Sanity check the results provided by driver 8196 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8197 && (stats.rssi_mgmt == 0 8198 || stats.beacon_rx == 0)) { 8199 stats = null; 8200 } 8201 } 8202 // Get Info and continue polling 8203 fetchRssiLinkSpeedAndFrequencyNative(); 8204 calculateWifiScore(stats); 8205 } 8206 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8207 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8208 8209 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8210 } else { 8211 // Polling has completed 8212 } 8213 break; 8214 case CMD_ENABLE_RSSI_POLL: 8215 cleanWifiScore(); 8216 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8217 mEnableRssiPolling = (message.arg1 == 1); 8218 } else { 8219 mEnableRssiPolling = false; 8220 } 8221 mRssiPollToken++; 8222 if (mEnableRssiPolling) { 8223 // First poll 8224 fetchRssiLinkSpeedAndFrequencyNative(); 8225 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8226 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8227 } 8228 break; 8229 case WifiManager.RSSI_PKTCNT_FETCH: 8230 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8231 fetchRssiLinkSpeedAndFrequencyNative(); 8232 info.rssi = mWifiInfo.getRssi(); 8233 fetchPktcntNative(info); 8234 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8235 break; 8236 case CMD_DELAYED_NETWORK_DISCONNECT: 8237 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8238 8239 // Ignore if we are not debouncing 8240 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8241 + message.arg1); 8242 return HANDLED; 8243 } else { 8244 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8245 + message.arg1); 8246 8247 linkDebouncing = false; 8248 // If we are still debouncing while this message comes, 8249 // it means we were not able to reconnect within the alloted time 8250 // = LINK_FLAPPING_DEBOUNCE_MSEC 8251 // and thus, trigger a real disconnect 8252 handleNetworkDisconnect(); 8253 transitionTo(mDisconnectedState); 8254 } 8255 break; 8256 case CMD_ASSOCIATED_BSSID: 8257 if ((String) message.obj == null) { 8258 logw("Associated command w/o BSSID"); 8259 break; 8260 } 8261 mLastBssid = (String) message.obj; 8262 if (mLastBssid != null 8263 && (mWifiInfo.getBSSID() == null 8264 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8265 mWifiInfo.setBSSID((String) message.obj); 8266 sendNetworkStateChangeBroadcast(mLastBssid); 8267 } 8268 break; 8269 default: 8270 return NOT_HANDLED; 8271 } 8272 8273 return HANDLED; 8274 } 8275 } 8276 8277 class ObtainingIpState extends State { 8278 @Override 8279 public void enter() { 8280 if (DBG) { 8281 String key = ""; 8282 if (getCurrentWifiConfiguration() != null) { 8283 key = getCurrentWifiConfiguration().configKey(); 8284 } 8285 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8286 + " " + key + " " 8287 + " roam=" + mAutoRoaming 8288 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8289 + " watchdog= " + obtainingIpWatchdogCount); 8290 } 8291 8292 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8293 // We might still be roaming 8294 linkDebouncing = false; 8295 8296 // Send event to CM & network change broadcast 8297 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8298 8299 // We must clear the config BSSID, as the wifi chipset may decide to roam 8300 // from this point on and having the BSSID specified in the network block would 8301 // cause the roam to faile and the device to disconnect 8302 clearCurrentConfigBSSID("ObtainingIpAddress"); 8303 8304 try { 8305 mNwService.enableIpv6(mInterfaceName); 8306 } catch (RemoteException re) { 8307 loge("Failed to enable IPv6: " + re); 8308 } catch (IllegalStateException e) { 8309 loge("Failed to enable IPv6: " + e); 8310 } 8311 8312 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8313 if (isRoaming()) { 8314 renewDhcp(); 8315 } else { 8316 // Remove any IP address on the interface in case we're switching from static 8317 // IP configuration to DHCP. This is safe because if we get here when not 8318 // roaming, we don't have a usable address. 8319 clearIPv4Address(mInterfaceName); 8320 startDhcp(); 8321 } 8322 obtainingIpWatchdogCount++; 8323 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8324 // Get Link layer stats so as we get fresh tx packet counters 8325 getWifiLinkLayerStats(true); 8326 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8327 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8328 } else { 8329 // stop any running dhcp before assigning static IP 8330 stopDhcp(); 8331 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8332 mLastNetworkId); 8333 if (config.ipAddress == null) { 8334 logd("Static IP lacks address"); 8335 sendMessage(CMD_STATIC_IP_FAILURE); 8336 } else { 8337 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8338 ifcg.setLinkAddress(config.ipAddress); 8339 ifcg.setInterfaceUp(); 8340 try { 8341 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8342 if (DBG) log("Static IP configuration succeeded"); 8343 DhcpResults dhcpResults = new DhcpResults(config); 8344 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8345 } catch (RemoteException re) { 8346 loge("Static IP configuration failed: " + re); 8347 sendMessage(CMD_STATIC_IP_FAILURE); 8348 } catch (IllegalStateException e) { 8349 loge("Static IP configuration failed: " + e); 8350 sendMessage(CMD_STATIC_IP_FAILURE); 8351 } 8352 } 8353 } 8354 } 8355 @Override 8356 public boolean processMessage(Message message) { 8357 logStateAndMessage(message, getClass().getSimpleName()); 8358 8359 switch(message.what) { 8360 case CMD_STATIC_IP_SUCCESS: 8361 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8362 break; 8363 case CMD_STATIC_IP_FAILURE: 8364 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8365 break; 8366 case CMD_AUTO_CONNECT: 8367 case CMD_AUTO_ROAM: 8368 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8369 break; 8370 case WifiManager.SAVE_NETWORK: 8371 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8372 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8373 deferMessage(message); 8374 break; 8375 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8376 case CMD_SET_HIGH_PERF_MODE: 8377 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8378 deferMessage(message); 8379 break; 8380 /* Defer scan request since we should not switch to other channels at DHCP */ 8381 case CMD_START_SCAN: 8382 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8383 deferMessage(message); 8384 break; 8385 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8386 if (message.arg1 == obtainingIpWatchdogCount) { 8387 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8388 + obtainingIpWatchdogCount); 8389 handleIpConfigurationLost(); 8390 transitionTo(mDisconnectingState); 8391 break; 8392 } 8393 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8394 break; 8395 default: 8396 return NOT_HANDLED; 8397 } 8398 return HANDLED; 8399 } 8400 } 8401 8402 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8403 // sets mPoorNetworkDetectionEnabled to false. 8404 class VerifyingLinkState extends State { 8405 @Override 8406 public void enter() { 8407 log(getName() + " enter"); 8408 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8409 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8410 sendNetworkStateChangeBroadcast(mLastBssid); 8411 // End roaming 8412 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8413 } 8414 @Override 8415 public boolean processMessage(Message message) { 8416 logStateAndMessage(message, getClass().getSimpleName()); 8417 8418 switch (message.what) { 8419 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8420 // Stay here 8421 log(getName() + " POOR_LINK_DETECTED: no transition"); 8422 break; 8423 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8424 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8425 sendConnectedState(); 8426 transitionTo(mConnectedState); 8427 break; 8428 default: 8429 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8430 return NOT_HANDLED; 8431 } 8432 return HANDLED; 8433 } 8434 } 8435 8436 private void sendConnectedState() { 8437 // If this network was explicitly selected by the user, evaluate whether to call 8438 // explicitlySelected() so the system can treat it appropriately. 8439 WifiConfiguration config = getCurrentWifiConfiguration(); 8440 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8441 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8442 if (DBG) { 8443 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8444 } 8445 if (prompt) { 8446 // Selected by the user via Settings or QuickSettings. If this network has Internet 8447 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8448 // really want to switch, or has already confirmed and selected "Don't ask again". 8449 if (DBG) { 8450 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8451 } 8452 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8453 } 8454 } 8455 8456 setNetworkDetailedState(DetailedState.CONNECTED); 8457 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8458 sendNetworkStateChangeBroadcast(mLastBssid); 8459 } 8460 8461 class RoamingState extends State { 8462 boolean mAssociated; 8463 @Override 8464 public void enter() { 8465 if (DBG) { 8466 log("RoamingState Enter" 8467 + " mScreenOn=" + mScreenOn ); 8468 } 8469 setScanAlarm(false); 8470 8471 // Make sure we disconnect if roaming fails 8472 roamWatchdogCount++; 8473 logd("Start Roam Watchdog " + roamWatchdogCount); 8474 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8475 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8476 mAssociated = false; 8477 } 8478 @Override 8479 public boolean processMessage(Message message) { 8480 logStateAndMessage(message, getClass().getSimpleName()); 8481 WifiConfiguration config; 8482 switch (message.what) { 8483 case CMD_IP_CONFIGURATION_LOST: 8484 config = getCurrentWifiConfiguration(); 8485 if (config != null) { 8486 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8487 mWifiConfigStore.noteRoamingFailure(config, 8488 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8489 } 8490 return NOT_HANDLED; 8491 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8492 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8493 return HANDLED; 8494 case CMD_UNWANTED_NETWORK: 8495 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8496 return HANDLED; 8497 case CMD_SET_OPERATIONAL_MODE: 8498 if (message.arg1 != CONNECT_MODE) { 8499 deferMessage(message); 8500 } 8501 break; 8502 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8503 /** 8504 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8505 * before NETWORK_DISCONNECTION_EVENT 8506 * And there is an associated BSSID corresponding to our target BSSID, then 8507 * we have missed the network disconnection, transition to mDisconnectedState 8508 * and handle the rest of the events there. 8509 */ 8510 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8511 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8512 || stateChangeResult.state == SupplicantState.INACTIVE 8513 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8514 if (DBG) { 8515 log("STATE_CHANGE_EVENT in roaming state " 8516 + stateChangeResult.toString() ); 8517 } 8518 if (stateChangeResult.BSSID != null 8519 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8520 handleNetworkDisconnect(); 8521 transitionTo(mDisconnectedState); 8522 } 8523 } 8524 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8525 // We completed the layer2 roaming part 8526 mAssociated = true; 8527 if (stateChangeResult.BSSID != null) { 8528 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8529 } 8530 } 8531 break; 8532 case CMD_ROAM_WATCHDOG_TIMER: 8533 if (roamWatchdogCount == message.arg1) { 8534 if (DBG) log("roaming watchdog! -> disconnect"); 8535 mRoamFailCount++; 8536 handleNetworkDisconnect(); 8537 mWifiNative.disconnect(); 8538 transitionTo(mDisconnectedState); 8539 } 8540 break; 8541 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8542 if (mAssociated) { 8543 if (DBG) log("roaming and Network connection established"); 8544 mLastNetworkId = message.arg1; 8545 mLastBssid = (String) message.obj; 8546 mWifiInfo.setBSSID(mLastBssid); 8547 mWifiInfo.setNetworkId(mLastNetworkId); 8548 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8549 sendNetworkStateChangeBroadcast(mLastBssid); 8550 transitionTo(mObtainingIpState); 8551 } else { 8552 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8553 } 8554 break; 8555 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8556 // Throw away but only if it corresponds to the network we're roaming to 8557 String bssid = (String)message.obj; 8558 if (true) { 8559 String target = ""; 8560 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8561 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8562 + " BSSID=" + bssid 8563 + " target=" + target); 8564 } 8565 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8566 handleNetworkDisconnect(); 8567 transitionTo(mDisconnectedState); 8568 } 8569 break; 8570 case WifiMonitor.SSID_TEMP_DISABLED: 8571 // Auth error while roaming 8572 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8573 + " id=" + Integer.toString(message.arg1) 8574 + " isRoaming=" + isRoaming() 8575 + " roam=" + Integer.toString(mAutoRoaming)); 8576 if (message.arg1 == mLastNetworkId) { 8577 config = getCurrentWifiConfiguration(); 8578 if (config != null) { 8579 mWifiLogger.captureBugReportData( 8580 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8581 mWifiConfigStore.noteRoamingFailure(config, 8582 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8583 } 8584 handleNetworkDisconnect(); 8585 transitionTo(mDisconnectingState); 8586 } 8587 return NOT_HANDLED; 8588 case CMD_START_SCAN: 8589 deferMessage(message); 8590 break; 8591 default: 8592 return NOT_HANDLED; 8593 } 8594 return HANDLED; 8595 } 8596 8597 @Override 8598 public void exit() { 8599 logd("WifiStateMachine: Leaving Roaming state"); 8600 } 8601 } 8602 8603 class ConnectedState extends State { 8604 @Override 8605 public void enter() { 8606 String address; 8607 updateDefaultRouteMacAddress(1000); 8608 if (DBG) { 8609 log("Enter ConnectedState " 8610 + " mScreenOn=" + mScreenOn 8611 + " scanperiod=" 8612 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8613 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8614 + mWifiConfigStore.enableHalBasedPno.get() 8615 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8616 } 8617 if (mScreenOn 8618 && getEnableAutoJoinWhenAssociated()) { 8619 if (useHalBasedAutoJoinOffload()) { 8620 startGScanConnectedModeOffload("connectedEnter"); 8621 } else { 8622 // restart scan alarm 8623 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8624 null, null); 8625 } 8626 } 8627 registerConnected(); 8628 lastConnectAttempt = 0; 8629 targetWificonfiguration = null; 8630 // Paranoia 8631 linkDebouncing = false; 8632 8633 // Not roaming anymore 8634 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8635 8636 if (testNetworkDisconnect) { 8637 testNetworkDisconnectCounter++; 8638 logd("ConnectedState Enter start disconnect test " + 8639 testNetworkDisconnectCounter); 8640 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8641 testNetworkDisconnectCounter, 0), 15000); 8642 } 8643 8644 // Reenable all networks, allow for hidden networks to be scanned 8645 mWifiConfigStore.enableAllNetworks(); 8646 8647 mLastDriverRoamAttempt = 0; 8648 8649 //startLazyRoam(); 8650 } 8651 @Override 8652 public boolean processMessage(Message message) { 8653 WifiConfiguration config = null; 8654 logStateAndMessage(message, getClass().getSimpleName()); 8655 8656 switch (message.what) { 8657 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8658 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8659 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8660 return HANDLED; 8661 } 8662 /* If we are still in Disconnected state after having discovered a valid 8663 * network this means autojoin didnt managed to associate to the network, 8664 * then restart PNO so as we will try associating to it again. 8665 */ 8666 if (useHalBasedAutoJoinOffload()) { 8667 if (mGScanStartTimeMilli == 0) { 8668 // If offload is not started, then start it... 8669 startGScanConnectedModeOffload("connectedRestart"); 8670 } else { 8671 // If offload is already started, then check if we need to increase 8672 // the scan period and restart the Gscan 8673 long now = System.currentTimeMillis(); 8674 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8675 && ((now - mGScanStartTimeMilli) 8676 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8677 && (mGScanPeriodMilli 8678 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8679 { 8680 startConnectedGScan("Connected restart gscan"); 8681 } 8682 } 8683 } 8684 break; 8685 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8686 updateAssociatedScanPermission(); 8687 break; 8688 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8689 if (DBG) log("Watchdog reports poor link"); 8690 transitionTo(mVerifyingLinkState); 8691 break; 8692 case CMD_UNWANTED_NETWORK: 8693 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 8694 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8695 mWifiNative.disconnect(); 8696 transitionTo(mDisconnectingState); 8697 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 8698 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 8699 config = getCurrentWifiConfiguration(); 8700 if (config != null) { 8701 // Disable autojoin 8702 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 8703 config.validatedInternetAccess = false; 8704 // Clear last-selected status, as being last-selected also avoids 8705 // disabling auto-join. 8706 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8707 mWifiConfigStore.setLastSelectedConfiguration( 8708 WifiConfiguration.INVALID_NETWORK_ID); 8709 } 8710 } 8711 config.numNoInternetAccessReports += 1; 8712 config.dirty = true; 8713 mWifiConfigStore.writeKnownNetworkHistory(false); 8714 } 8715 } 8716 return HANDLED; 8717 case CMD_NETWORK_STATUS: 8718 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8719 config = getCurrentWifiConfiguration(); 8720 if (config != null) { 8721 if (!config.validatedInternetAccess 8722 || config.numNoInternetAccessReports != 0) { 8723 config.dirty = true; 8724 } 8725 // re-enable autojoin 8726 config.numNoInternetAccessReports = 0; 8727 config.validatedInternetAccess = true; 8728 mWifiConfigStore.writeKnownNetworkHistory(false); 8729 } 8730 } 8731 return HANDLED; 8732 case CMD_ACCEPT_UNVALIDATED: 8733 boolean accept = (message.arg1 != 0); 8734 config = getCurrentWifiConfiguration(); 8735 if (config != null) { 8736 config.noInternetAccessExpected = accept; 8737 } 8738 return HANDLED; 8739 case CMD_TEST_NETWORK_DISCONNECT: 8740 // Force a disconnect 8741 if (message.arg1 == testNetworkDisconnectCounter) { 8742 mWifiNative.disconnect(); 8743 } 8744 break; 8745 case CMD_ASSOCIATED_BSSID: 8746 // ASSOCIATING to a new BSSID while already connected, indicates 8747 // that driver is roaming 8748 mLastDriverRoamAttempt = System.currentTimeMillis(); 8749 String toBSSID = (String)message.obj; 8750 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8751 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8752 } 8753 return NOT_HANDLED; 8754 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8755 long lastRoam = 0; 8756 if (mLastDriverRoamAttempt != 0) { 8757 // Calculate time since last driver roam attempt 8758 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8759 mLastDriverRoamAttempt = 0; 8760 } 8761 if (unexpectedDisconnectedReason(message.arg2)) { 8762 mWifiLogger.captureBugReportData( 8763 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8764 } 8765 config = getCurrentWifiConfiguration(); 8766 if (mScreenOn 8767 && !linkDebouncing 8768 && config != null 8769 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8770 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8771 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8772 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8773 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8774 && mWifiInfo.getRssi() > 8775 WifiConfiguration.BAD_RSSI_24) 8776 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8777 && mWifiInfo.getRssi() > 8778 WifiConfiguration.BAD_RSSI_5))) { 8779 // Start de-bouncing the L2 disconnection: 8780 // this L2 disconnection might be spurious. 8781 // Hence we allow 7 seconds for the state machine to try 8782 // to reconnect, go thru the 8783 // roaming cycle and enter Obtaining IP address 8784 // before signalling the disconnect to ConnectivityService and L3 8785 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8786 linkDebouncing = true; 8787 8788 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8789 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8790 if (DBG) { 8791 log("NETWORK_DISCONNECTION_EVENT in connected state" 8792 + " BSSID=" + mWifiInfo.getBSSID() 8793 + " RSSI=" + mWifiInfo.getRssi() 8794 + " freq=" + mWifiInfo.getFrequency() 8795 + " reason=" + message.arg2 8796 + " -> debounce"); 8797 } 8798 return HANDLED; 8799 } else { 8800 if (DBG) { 8801 int ajst = -1; 8802 if (config != null) ajst = config.autoJoinStatus; 8803 log("NETWORK_DISCONNECTION_EVENT in connected state" 8804 + " BSSID=" + mWifiInfo.getBSSID() 8805 + " RSSI=" + mWifiInfo.getRssi() 8806 + " freq=" + mWifiInfo.getFrequency() 8807 + " was debouncing=" + linkDebouncing 8808 + " reason=" + message.arg2 8809 + " ajst=" + ajst); 8810 } 8811 } 8812 break; 8813 case CMD_AUTO_ROAM: 8814 // Clear the driver roam indication since we are attempting a framework roam 8815 mLastDriverRoamAttempt = 0; 8816 8817 /* Connect command coming from auto-join */ 8818 ScanResult candidate = (ScanResult)message.obj; 8819 String bssid = "any"; 8820 if (candidate != null && candidate.is5GHz()) { 8821 // Only lock BSSID for 5GHz networks 8822 bssid = candidate.BSSID; 8823 } 8824 int netId = mLastNetworkId; 8825 config = getCurrentWifiConfiguration(); 8826 8827 8828 if (config == null) { 8829 loge("AUTO_ROAM and no config, bail out..."); 8830 break; 8831 } 8832 8833 logd("CMD_AUTO_ROAM sup state " 8834 + mSupplicantStateTracker.getSupplicantStateName() 8835 + " my state " + getCurrentState().getName() 8836 + " nid=" + Integer.toString(netId) 8837 + " config " + config.configKey() 8838 + " roam=" + Integer.toString(message.arg2) 8839 + " to " + bssid 8840 + " targetRoamBSSID " + mTargetRoamBSSID); 8841 8842 /* Save the BSSID so as to lock it @ firmware */ 8843 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8844 logd("AUTO_ROAM nothing to do"); 8845 // Same BSSID, nothing to do 8846 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8847 break; 8848 }; 8849 8850 // Make sure the network is enabled, since supplicant will not re-enable it 8851 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8852 8853 if (deferForUserInput(message, netId, false)) { 8854 break; 8855 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8856 WifiConfiguration.USER_BANNED) { 8857 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8858 WifiManager.NOT_AUTHORIZED); 8859 break; 8860 } 8861 8862 boolean ret = false; 8863 if (mLastNetworkId != netId) { 8864 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8865 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8866 ret = true; 8867 } 8868 } else { 8869 ret = mWifiNative.reassociate(); 8870 } 8871 if (ret) { 8872 lastConnectAttempt = System.currentTimeMillis(); 8873 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8874 8875 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8876 mAutoRoaming = message.arg2; 8877 transitionTo(mRoamingState); 8878 8879 } else { 8880 loge("Failed to connect config: " + config + " netId: " + netId); 8881 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8882 WifiManager.ERROR); 8883 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8884 break; 8885 } 8886 break; 8887 default: 8888 return NOT_HANDLED; 8889 } 8890 return HANDLED; 8891 } 8892 8893 @Override 8894 public void exit() { 8895 logd("WifiStateMachine: Leaving Connected state"); 8896 setScanAlarm(false); 8897 mLastDriverRoamAttempt = 0; 8898 8899 stopLazyRoam(); 8900 8901 mWhiteListedSsids = null; 8902 } 8903 } 8904 8905 class DisconnectingState extends State { 8906 8907 @Override 8908 public void enter() { 8909 8910 if (PDBG) { 8911 logd(" Enter DisconnectingState State scan interval " 8912 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8913 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8914 + " screenOn=" + mScreenOn); 8915 } 8916 8917 // Make sure we disconnect: we enter this state prior to connecting to a new 8918 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 8919 // event which in this case will be indicating that supplicant started to associate. 8920 // In some cases supplicant doesn't ignore the connect requests (it might not 8921 // find the target SSID in its cache), 8922 // Therefore we end up stuck that state, hence the need for the watchdog. 8923 disconnectingWatchdogCount++; 8924 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8925 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8926 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8927 } 8928 8929 @Override 8930 public boolean processMessage(Message message) { 8931 logStateAndMessage(message, getClass().getSimpleName()); 8932 switch (message.what) { 8933 case CMD_SET_OPERATIONAL_MODE: 8934 if (message.arg1 != CONNECT_MODE) { 8935 deferMessage(message); 8936 } 8937 break; 8938 case CMD_START_SCAN: 8939 deferMessage(message); 8940 return HANDLED; 8941 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8942 if (disconnectingWatchdogCount == message.arg1) { 8943 if (DBG) log("disconnecting watchdog! -> disconnect"); 8944 handleNetworkDisconnect(); 8945 transitionTo(mDisconnectedState); 8946 } 8947 break; 8948 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8949 /** 8950 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8951 * we have missed the network disconnection, transition to mDisconnectedState 8952 * and handle the rest of the events there 8953 */ 8954 deferMessage(message); 8955 handleNetworkDisconnect(); 8956 transitionTo(mDisconnectedState); 8957 break; 8958 default: 8959 return NOT_HANDLED; 8960 } 8961 return HANDLED; 8962 } 8963 } 8964 8965 class DisconnectedState extends State { 8966 @Override 8967 public void enter() { 8968 // We dont scan frequently if this is a temporary disconnect 8969 // due to p2p 8970 if (mTemporarilyDisconnectWifi) { 8971 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8972 return; 8973 } 8974 8975 if (PDBG) { 8976 logd(" Enter DisconnectedState scan interval " 8977 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8978 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8979 + " screenOn=" + mScreenOn 8980 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8981 + mWifiConfigStore.enableHalBasedPno.get()); 8982 } 8983 8984 /** clear the roaming state, if we were roaming, we failed */ 8985 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8986 8987 if (useHalBasedAutoJoinOffload()) { 8988 startGScanDisconnectedModeOffload("disconnectedEnter"); 8989 } else { 8990 if (mScreenOn) { 8991 /** 8992 * screen lit and => delayed timer 8993 */ 8994 startDelayedScan(mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8995 null, null); 8996 } else { 8997 /** 8998 * screen dark and PNO supported => scan alarm disabled 8999 */ 9000 if (mBackgroundScanSupported) { 9001 /* If a regular scan result is pending, do not initiate background 9002 * scan until the scan results are returned. This is needed because 9003 * initiating a background scan will cancel the regular scan and 9004 * scan results will not be returned until background scanning is 9005 * cleared 9006 */ 9007 if (!mIsScanOngoing) { 9008 enableBackgroundScan(true); 9009 } 9010 } else { 9011 setScanAlarm(true); 9012 } 9013 } 9014 } 9015 9016 /** 9017 * If we have no networks saved, the supplicant stops doing the periodic scan. 9018 * The scans are useful to notify the user of the presence of an open network. 9019 * Note that these are not wake up scans. 9020 */ 9021 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9022 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9023 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9024 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9025 } 9026 9027 mDisconnectedTimeStamp = System.currentTimeMillis(); 9028 mDisconnectedPnoAlarmCount = 0; 9029 } 9030 @Override 9031 public boolean processMessage(Message message) { 9032 boolean ret = HANDLED; 9033 9034 logStateAndMessage(message, getClass().getSimpleName()); 9035 9036 switch (message.what) { 9037 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9038 if (mP2pConnected.get()) break; 9039 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9040 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9041 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9042 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9043 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9044 } 9045 break; 9046 case WifiManager.FORGET_NETWORK: 9047 case CMD_REMOVE_NETWORK: 9048 case CMD_REMOVE_APP_CONFIGURATIONS: 9049 case CMD_REMOVE_USER_CONFIGURATIONS: 9050 // Set up a delayed message here. After the forget/remove is handled 9051 // the handled delayed message will determine if there is a need to 9052 // scan and continue 9053 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9054 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9055 ret = NOT_HANDLED; 9056 break; 9057 case CMD_SET_OPERATIONAL_MODE: 9058 if (message.arg1 != CONNECT_MODE) { 9059 mOperationalMode = message.arg1; 9060 9061 mWifiConfigStore.disableAllNetworks(); 9062 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9063 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9064 setWifiState(WIFI_STATE_DISABLED); 9065 } 9066 transitionTo(mScanModeState); 9067 } 9068 mWifiConfigStore. 9069 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9070 break; 9071 /* Ignore network disconnect */ 9072 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9073 break; 9074 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9075 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9076 if (DBG) { 9077 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9078 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9079 + " debouncing=" + linkDebouncing); 9080 } 9081 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9082 /* ConnectModeState does the rest of the handling */ 9083 ret = NOT_HANDLED; 9084 break; 9085 case CMD_START_SCAN: 9086 if (!checkOrDeferScanAllowed(message)) { 9087 // The scan request was rescheduled 9088 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9089 return HANDLED; 9090 } 9091 if (message.arg1 == SCAN_ALARM_SOURCE) { 9092 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9093 // not be processed) and restart the scan 9094 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9095 if (mP2pConnected.get()) { 9096 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9097 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9098 period); 9099 } 9100 if (!checkAndRestartDelayedScan(message.arg2, 9101 true, period, null, null)) { 9102 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9103 logd("Disconnected CMD_START_SCAN source " 9104 + message.arg1 9105 + " " + message.arg2 + ", " + mDelayedScanCounter 9106 + " -> obsolete"); 9107 return HANDLED; 9108 } 9109 /* Disable background scan temporarily during a regular scan */ 9110 enableBackgroundScan(false); 9111 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9112 ret = HANDLED; 9113 } else { 9114 9115 /* 9116 * The SCAN request is not handled in this state and 9117 * would eventually might/will get handled in the 9118 * parent's state. The PNO, if already enabled had to 9119 * get disabled before the SCAN trigger. Hence, stop 9120 * the PNO if already enabled in this state, though the 9121 * SCAN request is not handled(PNO disable before the 9122 * SCAN trigger in any other state is not the right 9123 * place to issue). 9124 */ 9125 9126 enableBackgroundScan(false); 9127 ret = NOT_HANDLED; 9128 } 9129 break; 9130 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9131 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9132 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9133 return HANDLED; 9134 } 9135 /* If we are still in Disconnected state after having discovered a valid 9136 * network this means autojoin didnt managed to associate to the network, 9137 * then restart PNO so as we will try associating to it again. 9138 */ 9139 if (useHalBasedAutoJoinOffload()) { 9140 if (mGScanStartTimeMilli == 0) { 9141 // If offload is not started, then start it... 9142 startGScanDisconnectedModeOffload("disconnectedRestart"); 9143 } else { 9144 // If offload is already started, then check if we need to increase 9145 // the scan period and restart the Gscan 9146 long now = System.currentTimeMillis(); 9147 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9148 && ((now - mGScanStartTimeMilli) 9149 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9150 && (mGScanPeriodMilli 9151 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9152 { 9153 startDisconnectedGScan("disconnected restart gscan"); 9154 } 9155 } 9156 } else { 9157 // If we are still disconnected for a short while after having found a 9158 // network thru PNO, then something went wrong, and for some reason we 9159 // couldn't join this network. 9160 // It might be due to a SW bug in supplicant or the wifi stack, or an 9161 // interoperability issue, or we try to join a bad bss and failed 9162 // In that case we want to restart pno so as to make sure that we will 9163 // attempt again to join that network. 9164 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9165 enableBackgroundScan(false); 9166 enableBackgroundScan(true); 9167 } 9168 return HANDLED; 9169 } 9170 break; 9171 case WifiMonitor.SCAN_RESULTS_EVENT: 9172 case WifiMonitor.SCAN_FAILED_EVENT: 9173 /* Re-enable background scan when a pending scan result is received */ 9174 if (!mScreenOn && mIsScanOngoing 9175 && mBackgroundScanSupported 9176 && !useHalBasedAutoJoinOffload()) { 9177 enableBackgroundScan(true); 9178 } else if (!mScreenOn 9179 && !mIsScanOngoing 9180 && mBackgroundScanSupported 9181 && !useHalBasedAutoJoinOffload()) { 9182 // We receive scan results from legacy PNO, hence restart the PNO alarm 9183 int delay; 9184 if (mDisconnectedPnoAlarmCount < 1) { 9185 delay = 30 * 1000; 9186 } else if (mDisconnectedPnoAlarmCount < 3) { 9187 delay = 60 * 1000; 9188 } else { 9189 delay = 360 * 1000; 9190 } 9191 mDisconnectedPnoAlarmCount++; 9192 if (VDBG) { 9193 logd("Starting PNO alarm " + delay); 9194 } 9195 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9196 System.currentTimeMillis() + delay, 9197 mPnoIntent); 9198 } 9199 /* Handled in parent state */ 9200 ret = NOT_HANDLED; 9201 break; 9202 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9203 NetworkInfo info = (NetworkInfo) message.obj; 9204 mP2pConnected.set(info.isConnected()); 9205 if (mP2pConnected.get()) { 9206 int defaultInterval = mContext.getResources().getInteger( 9207 R.integer.config_wifi_scan_interval_p2p_connected); 9208 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9209 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9210 defaultInterval); 9211 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9212 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9213 if (DBG) log("Turn on scanning after p2p disconnected"); 9214 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9215 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9216 } else { 9217 // If P2P is not connected and there are saved networks, then restart 9218 // scanning at the normal period. This is necessary because scanning might 9219 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9220 // was set to zero. 9221 if (useHalBasedAutoJoinOffload()) { 9222 startGScanDisconnectedModeOffload("p2pRestart"); 9223 } else { 9224 startDelayedScan( 9225 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9226 null, null); 9227 } 9228 } 9229 break; 9230 case CMD_RECONNECT: 9231 case CMD_REASSOCIATE: 9232 if (mTemporarilyDisconnectWifi) { 9233 // Drop a third party reconnect/reassociate if STA is 9234 // temporarily disconnected for p2p 9235 break; 9236 } else { 9237 // ConnectModeState handles it 9238 ret = NOT_HANDLED; 9239 } 9240 break; 9241 case CMD_SCREEN_STATE_CHANGED: 9242 handleScreenStateChanged(message.arg1 != 0); 9243 break; 9244 default: 9245 ret = NOT_HANDLED; 9246 } 9247 return ret; 9248 } 9249 9250 @Override 9251 public void exit() { 9252 mDisconnectedPnoAlarmCount = 0; 9253 /* No need for a background scan upon exit from a disconnected state */ 9254 enableBackgroundScan(false); 9255 setScanAlarm(false); 9256 mAlarmManager.cancel(mPnoIntent); 9257 } 9258 } 9259 9260 class WpsRunningState extends State { 9261 // Tracks the source to provide a reply 9262 private Message mSourceMessage; 9263 @Override 9264 public void enter() { 9265 mSourceMessage = Message.obtain(getCurrentMessage()); 9266 } 9267 @Override 9268 public boolean processMessage(Message message) { 9269 logStateAndMessage(message, getClass().getSimpleName()); 9270 9271 switch (message.what) { 9272 case WifiMonitor.WPS_SUCCESS_EVENT: 9273 // Ignore intermediate success, wait for full connection 9274 break; 9275 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9276 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9277 mSourceMessage.recycle(); 9278 mSourceMessage = null; 9279 deferMessage(message); 9280 transitionTo(mDisconnectedState); 9281 break; 9282 case WifiMonitor.WPS_OVERLAP_EVENT: 9283 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9284 WifiManager.WPS_OVERLAP_ERROR); 9285 mSourceMessage.recycle(); 9286 mSourceMessage = null; 9287 transitionTo(mDisconnectedState); 9288 break; 9289 case WifiMonitor.WPS_FAIL_EVENT: 9290 // Arg1 has the reason for the failure 9291 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9292 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9293 mSourceMessage.recycle(); 9294 mSourceMessage = null; 9295 transitionTo(mDisconnectedState); 9296 } else { 9297 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9298 } 9299 break; 9300 case WifiMonitor.WPS_TIMEOUT_EVENT: 9301 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9302 WifiManager.WPS_TIMED_OUT); 9303 mSourceMessage.recycle(); 9304 mSourceMessage = null; 9305 transitionTo(mDisconnectedState); 9306 break; 9307 case WifiManager.START_WPS: 9308 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9309 break; 9310 case WifiManager.CANCEL_WPS: 9311 if (mWifiNative.cancelWps()) { 9312 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9313 } else { 9314 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9315 } 9316 transitionTo(mDisconnectedState); 9317 break; 9318 /** 9319 * Defer all commands that can cause connections to a different network 9320 * or put the state machine out of connect mode 9321 */ 9322 case CMD_STOP_DRIVER: 9323 case CMD_SET_OPERATIONAL_MODE: 9324 case WifiManager.CONNECT_NETWORK: 9325 case CMD_ENABLE_NETWORK: 9326 case CMD_RECONNECT: 9327 case CMD_REASSOCIATE: 9328 case CMD_ENABLE_ALL_NETWORKS: 9329 deferMessage(message); 9330 break; 9331 case CMD_AUTO_CONNECT: 9332 case CMD_AUTO_ROAM: 9333 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9334 return HANDLED; 9335 case CMD_START_SCAN: 9336 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9337 return HANDLED; 9338 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9339 if (DBG) log("Network connection lost"); 9340 handleNetworkDisconnect(); 9341 break; 9342 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9343 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9344 break; 9345 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9346 // Disregard auth failure events during WPS connection. The 9347 // EAP sequence is retried several times, and there might be 9348 // failures (especially for wps pin). We will get a WPS_XXX 9349 // event at the end of the sequence anyway. 9350 if (DBG) log("Ignore auth failure during WPS connection"); 9351 break; 9352 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9353 // Throw away supplicant state changes when WPS is running. 9354 // We will start getting supplicant state changes once we get 9355 // a WPS success or failure 9356 break; 9357 default: 9358 return NOT_HANDLED; 9359 } 9360 return HANDLED; 9361 } 9362 9363 @Override 9364 public void exit() { 9365 mWifiConfigStore.enableAllNetworks(); 9366 mWifiConfigStore.loadConfiguredNetworks(); 9367 } 9368 } 9369 9370 class SoftApStartingState extends State { 9371 @Override 9372 public void enter() { 9373 final Message message = getCurrentMessage(); 9374 if (message.what == CMD_START_AP) { 9375 final WifiConfiguration config = (WifiConfiguration) message.obj; 9376 9377 if (config == null) { 9378 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9379 } else { 9380 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9381 startSoftApWithConfig(config); 9382 } 9383 } else { 9384 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9385 } 9386 } 9387 @Override 9388 public boolean processMessage(Message message) { 9389 logStateAndMessage(message, getClass().getSimpleName()); 9390 9391 switch(message.what) { 9392 case CMD_START_SUPPLICANT: 9393 case CMD_STOP_SUPPLICANT: 9394 case CMD_START_AP: 9395 case CMD_STOP_AP: 9396 case CMD_START_DRIVER: 9397 case CMD_STOP_DRIVER: 9398 case CMD_SET_OPERATIONAL_MODE: 9399 case CMD_SET_COUNTRY_CODE: 9400 case CMD_SET_FREQUENCY_BAND: 9401 case CMD_START_PACKET_FILTERING: 9402 case CMD_STOP_PACKET_FILTERING: 9403 case CMD_TETHER_STATE_CHANGE: 9404 deferMessage(message); 9405 break; 9406 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9407 WifiConfiguration config = (WifiConfiguration) message.obj; 9408 if (config != null) { 9409 startSoftApWithConfig(config); 9410 } else { 9411 loge("Softap config is null!"); 9412 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9413 } 9414 break; 9415 case CMD_START_AP_SUCCESS: 9416 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9417 transitionTo(mSoftApStartedState); 9418 break; 9419 case CMD_START_AP_FAILURE: 9420 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9421 transitionTo(mInitialState); 9422 break; 9423 default: 9424 return NOT_HANDLED; 9425 } 9426 return HANDLED; 9427 } 9428 } 9429 9430 class SoftApStartedState extends State { 9431 @Override 9432 public boolean processMessage(Message message) { 9433 logStateAndMessage(message, getClass().getSimpleName()); 9434 9435 switch(message.what) { 9436 case CMD_STOP_AP: 9437 if (DBG) log("Stopping Soft AP"); 9438 /* We have not tethered at this point, so we just shutdown soft Ap */ 9439 try { 9440 mNwService.stopAccessPoint(mInterfaceName); 9441 } catch(Exception e) { 9442 loge("Exception in stopAccessPoint()"); 9443 } 9444 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9445 transitionTo(mInitialState); 9446 break; 9447 case CMD_START_AP: 9448 // Ignore a start on a running access point 9449 break; 9450 // Fail client mode operation when soft AP is enabled 9451 case CMD_START_SUPPLICANT: 9452 loge("Cannot start supplicant with a running soft AP"); 9453 setWifiState(WIFI_STATE_UNKNOWN); 9454 break; 9455 case CMD_TETHER_STATE_CHANGE: 9456 TetherStateChange stateChange = (TetherStateChange) message.obj; 9457 if (startTethering(stateChange.available)) { 9458 transitionTo(mTetheringState); 9459 } 9460 break; 9461 default: 9462 return NOT_HANDLED; 9463 } 9464 return HANDLED; 9465 } 9466 } 9467 9468 class TetheringState extends State { 9469 @Override 9470 public void enter() { 9471 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9472 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9473 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9474 } 9475 @Override 9476 public boolean processMessage(Message message) { 9477 logStateAndMessage(message, getClass().getSimpleName()); 9478 9479 switch(message.what) { 9480 case CMD_TETHER_STATE_CHANGE: 9481 TetherStateChange stateChange = (TetherStateChange) message.obj; 9482 if (isWifiTethered(stateChange.active)) { 9483 transitionTo(mTetheredState); 9484 } 9485 return HANDLED; 9486 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9487 if (message.arg1 == mTetherToken) { 9488 loge("Failed to get tether update, shutdown soft access point"); 9489 transitionTo(mSoftApStartedState); 9490 // Needs to be first thing handled 9491 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9492 } 9493 break; 9494 case CMD_START_SUPPLICANT: 9495 case CMD_STOP_SUPPLICANT: 9496 case CMD_START_AP: 9497 case CMD_STOP_AP: 9498 case CMD_START_DRIVER: 9499 case CMD_STOP_DRIVER: 9500 case CMD_SET_OPERATIONAL_MODE: 9501 case CMD_SET_COUNTRY_CODE: 9502 case CMD_SET_FREQUENCY_BAND: 9503 case CMD_START_PACKET_FILTERING: 9504 case CMD_STOP_PACKET_FILTERING: 9505 deferMessage(message); 9506 break; 9507 default: 9508 return NOT_HANDLED; 9509 } 9510 return HANDLED; 9511 } 9512 } 9513 9514 class TetheredState extends State { 9515 @Override 9516 public boolean processMessage(Message message) { 9517 logStateAndMessage(message, getClass().getSimpleName()); 9518 9519 switch(message.what) { 9520 case CMD_TETHER_STATE_CHANGE: 9521 TetherStateChange stateChange = (TetherStateChange) message.obj; 9522 if (!isWifiTethered(stateChange.active)) { 9523 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9524 setHostApRunning(null, false); 9525 setHostApRunning(null, true); 9526 } 9527 return HANDLED; 9528 case CMD_STOP_AP: 9529 if (DBG) log("Untethering before stopping AP"); 9530 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9531 stopTethering(); 9532 transitionTo(mUntetheringState); 9533 // More work to do after untethering 9534 deferMessage(message); 9535 break; 9536 default: 9537 return NOT_HANDLED; 9538 } 9539 return HANDLED; 9540 } 9541 } 9542 9543 class UntetheringState extends State { 9544 @Override 9545 public void enter() { 9546 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9547 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9548 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9549 9550 } 9551 @Override 9552 public boolean processMessage(Message message) { 9553 logStateAndMessage(message, getClass().getSimpleName()); 9554 9555 switch(message.what) { 9556 case CMD_TETHER_STATE_CHANGE: 9557 TetherStateChange stateChange = (TetherStateChange) message.obj; 9558 9559 /* Wait till wifi is untethered */ 9560 if (isWifiTethered(stateChange.active)) break; 9561 9562 transitionTo(mSoftApStartedState); 9563 break; 9564 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9565 if (message.arg1 == mTetherToken) { 9566 loge("Failed to get tether update, force stop access point"); 9567 transitionTo(mSoftApStartedState); 9568 } 9569 break; 9570 case CMD_START_SUPPLICANT: 9571 case CMD_STOP_SUPPLICANT: 9572 case CMD_START_AP: 9573 case CMD_STOP_AP: 9574 case CMD_START_DRIVER: 9575 case CMD_STOP_DRIVER: 9576 case CMD_SET_OPERATIONAL_MODE: 9577 case CMD_SET_COUNTRY_CODE: 9578 case CMD_SET_FREQUENCY_BAND: 9579 case CMD_START_PACKET_FILTERING: 9580 case CMD_STOP_PACKET_FILTERING: 9581 deferMessage(message); 9582 break; 9583 default: 9584 return NOT_HANDLED; 9585 } 9586 return HANDLED; 9587 } 9588 } 9589 9590 /** 9591 * State machine initiated requests can have replyTo set to null indicating 9592 * there are no recepients, we ignore those reply actions. 9593 */ 9594 private void replyToMessage(Message msg, int what) { 9595 if (msg.replyTo == null) return; 9596 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9597 mReplyChannel.replyToMessage(msg, dstMsg); 9598 } 9599 9600 private void replyToMessage(Message msg, int what, int arg1) { 9601 if (msg.replyTo == null) return; 9602 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9603 dstMsg.arg1 = arg1; 9604 mReplyChannel.replyToMessage(msg, dstMsg); 9605 } 9606 9607 private void replyToMessage(Message msg, int what, Object obj) { 9608 if (msg.replyTo == null) return; 9609 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9610 dstMsg.obj = obj; 9611 mReplyChannel.replyToMessage(msg, dstMsg); 9612 } 9613 9614 /** 9615 * arg2 on the source message has a unique id that needs to be retained in replies 9616 * to match the request 9617 * <p>see WifiManager for details 9618 */ 9619 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9620 Message msg = Message.obtain(); 9621 msg.what = what; 9622 msg.arg2 = srcMsg.arg2; 9623 return msg; 9624 } 9625 9626 /** 9627 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9628 * @param msg Must have a WifiConfiguration obj to succeed 9629 */ 9630 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9631 WifiConfiguration config) { 9632 if (config != null && config.preSharedKey != null) { 9633 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9634 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9635 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9636 wifiCredentialEventType); 9637 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9638 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9639 } 9640 } 9641 9642 private static int parseHex(char ch) { 9643 if ('0' <= ch && ch <= '9') { 9644 return ch - '0'; 9645 } else if ('a' <= ch && ch <= 'f') { 9646 return ch - 'a' + 10; 9647 } else if ('A' <= ch && ch <= 'F') { 9648 return ch - 'A' + 10; 9649 } else { 9650 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9651 } 9652 } 9653 9654 private byte[] parseHex(String hex) { 9655 /* This only works for good input; don't throw bad data at it */ 9656 if (hex == null) { 9657 return new byte[0]; 9658 } 9659 9660 if (hex.length() % 2 != 0) { 9661 throw new NumberFormatException(hex + " is not a valid hex string"); 9662 } 9663 9664 byte[] result = new byte[(hex.length())/2 + 1]; 9665 result[0] = (byte) ((hex.length())/2); 9666 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9667 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9668 byte b = (byte) (val & 0xFF); 9669 result[j] = b; 9670 } 9671 9672 return result; 9673 } 9674 9675 private static String makeHex(byte[] bytes) { 9676 StringBuilder sb = new StringBuilder(); 9677 for (byte b : bytes) { 9678 sb.append(String.format("%02x", b)); 9679 } 9680 return sb.toString(); 9681 } 9682 9683 private static String makeHex(byte[] bytes, int from, int len) { 9684 StringBuilder sb = new StringBuilder(); 9685 for (int i = 0; i < len; i++) { 9686 sb.append(String.format("%02x", bytes[from+i])); 9687 } 9688 return sb.toString(); 9689 } 9690 9691 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9692 9693 int len = array1.length + array2.length + array3.length; 9694 9695 if (array1.length != 0) { 9696 len++; /* add another byte for size */ 9697 } 9698 9699 if (array2.length != 0) { 9700 len++; /* add another byte for size */ 9701 } 9702 9703 if (array3.length != 0) { 9704 len++; /* add another byte for size */ 9705 } 9706 9707 byte[] result = new byte[len]; 9708 9709 int index = 0; 9710 if (array1.length != 0) { 9711 result[index] = (byte) (array1.length & 0xFF); 9712 index++; 9713 for (byte b : array1) { 9714 result[index] = b; 9715 index++; 9716 } 9717 } 9718 9719 if (array2.length != 0) { 9720 result[index] = (byte) (array2.length & 0xFF); 9721 index++; 9722 for (byte b : array2) { 9723 result[index] = b; 9724 index++; 9725 } 9726 } 9727 9728 if (array3.length != 0) { 9729 result[index] = (byte) (array3.length & 0xFF); 9730 index++; 9731 for (byte b : array3) { 9732 result[index] = b; 9733 index++; 9734 } 9735 } 9736 return result; 9737 } 9738 9739 private static byte[] concatHex(byte[] array1, byte[] array2) { 9740 9741 int len = array1.length + array2.length; 9742 9743 byte[] result = new byte[len]; 9744 9745 int index = 0; 9746 if (array1.length != 0) { 9747 for (byte b : array1) { 9748 result[index] = b; 9749 index++; 9750 } 9751 } 9752 9753 if (array2.length != 0) { 9754 for (byte b : array2) { 9755 result[index] = b; 9756 index++; 9757 } 9758 } 9759 9760 return result; 9761 } 9762 9763 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9764 if (targetWificonfiguration == null 9765 || targetWificonfiguration.networkId == requestData.networkId) { 9766 logd("id matches targetWifiConfiguration"); 9767 } else { 9768 logd("id does not match targetWifiConfiguration"); 9769 return; 9770 } 9771 9772 TelephonyManager tm = (TelephonyManager) 9773 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9774 9775 if (tm != null) { 9776 StringBuilder sb = new StringBuilder(); 9777 for (String challenge : requestData.data) { 9778 9779 if (challenge == null || challenge.isEmpty()) 9780 continue; 9781 logd("RAND = " + challenge); 9782 9783 byte[] rand = null; 9784 try { 9785 rand = parseHex(challenge); 9786 } catch (NumberFormatException e) { 9787 loge("malformed challenge"); 9788 continue; 9789 } 9790 9791 String base64Challenge = android.util.Base64.encodeToString( 9792 rand, android.util.Base64.NO_WRAP); 9793 /* 9794 * First, try with appType = 2 => USIM according to 9795 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9796 */ 9797 int appType = 2; 9798 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9799 if (tmResponse == null) { 9800 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9801 * appType = 1 => SIM 9802 */ 9803 appType = 1; 9804 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9805 } 9806 logv("Raw Response - " + tmResponse); 9807 9808 if (tmResponse != null && tmResponse.length() > 4) { 9809 byte[] result = android.util.Base64.decode(tmResponse, 9810 android.util.Base64.DEFAULT); 9811 logv("Hex Response -" + makeHex(result)); 9812 int sres_len = result[0]; 9813 String sres = makeHex(result, 1, sres_len); 9814 int kc_offset = 1+sres_len; 9815 int kc_len = result[kc_offset]; 9816 String kc = makeHex(result, 1+kc_offset, kc_len); 9817 sb.append(":" + kc + ":" + sres); 9818 logv("kc:" + kc + " sres:" + sres); 9819 } else { 9820 loge("bad response - " + tmResponse); 9821 } 9822 } 9823 9824 String response = sb.toString(); 9825 logv("Supplicant Response -" + response); 9826 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9827 } else { 9828 loge("could not get telephony manager"); 9829 } 9830 } 9831 9832 void handle3GAuthRequest(SimAuthRequestData requestData) { 9833 StringBuilder sb = new StringBuilder(); 9834 byte[] rand = null; 9835 byte[] authn = null; 9836 String res_type = "UMTS-AUTH"; 9837 9838 if (targetWificonfiguration == null 9839 || targetWificonfiguration.networkId == requestData.networkId) { 9840 logd("id matches targetWifiConfiguration"); 9841 } else { 9842 logd("id does not match targetWifiConfiguration"); 9843 return; 9844 } 9845 if (requestData.data.length == 2) { 9846 try { 9847 rand = parseHex(requestData.data[0]); 9848 authn = parseHex(requestData.data[1]); 9849 } catch (NumberFormatException e) { 9850 loge("malformed challenge"); 9851 } 9852 } else { 9853 loge("malformed challenge"); 9854 } 9855 9856 String tmResponse = ""; 9857 if (rand != null && authn != null) { 9858 String base64Challenge = android.util.Base64.encodeToString( 9859 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9860 9861 TelephonyManager tm = (TelephonyManager) 9862 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9863 if (tm != null) { 9864 int appType = 2; // 2 => USIM 9865 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9866 logv("Raw Response - " + tmResponse); 9867 } else { 9868 loge("could not get telephony manager"); 9869 } 9870 } 9871 9872 if (tmResponse != null && tmResponse.length() > 4) { 9873 byte[] result = android.util.Base64.decode(tmResponse, 9874 android.util.Base64.DEFAULT); 9875 loge("Hex Response - " + makeHex(result)); 9876 byte tag = result[0]; 9877 if (tag == (byte) 0xdb) { 9878 logv("successful 3G authentication "); 9879 int res_len = result[1]; 9880 String res = makeHex(result, 2, res_len); 9881 int ck_len = result[res_len + 2]; 9882 String ck = makeHex(result, res_len + 3, ck_len); 9883 int ik_len = result[res_len + ck_len + 3]; 9884 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9885 sb.append(":" + ik + ":" + ck + ":" + res); 9886 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9887 } else if (tag == (byte) 0xdc) { 9888 loge("synchronisation failure"); 9889 int auts_len = result[1]; 9890 String auts = makeHex(result, 2, auts_len); 9891 res_type = "UMTS-AUTS"; 9892 sb.append(":" + auts); 9893 logv("auts:" + auts); 9894 } else { 9895 loge("bad response - unknown tag = " + tag); 9896 return; 9897 } 9898 } else { 9899 loge("bad response - " + tmResponse); 9900 return; 9901 } 9902 9903 String response = sb.toString(); 9904 logv("Supplicant Response -" + response); 9905 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9906 } 9907 9908 /** 9909 * @param reason reason code from supplicant on network disconnected event 9910 * @return true if this is a suspicious disconnect 9911 */ 9912 static boolean unexpectedDisconnectedReason(int reason) { 9913 return reason == 2 // PREV_AUTH_NOT_VALID 9914 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 9915 || reason == 7 // FRAME_FROM_NONASSOC_STA 9916 || reason == 8 // STA_HAS_LEFT 9917 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 9918 || reason == 14 // MICHAEL_MIC_FAILURE 9919 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 9920 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 9921 || reason == 18 // GROUP_CIPHER_NOT_VALID 9922 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 9923 || reason == 23 // IEEE_802_1X_AUTH_FAILED 9924 || reason == 34; // DISASSOC_LOW_ACK 9925 } 9926} 9927