WifiStateMachine.java revision f4c48cbf965d334f319393707b59c6a19149a87c
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wifi; 18 19import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 24import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 25import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 26import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 27import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 28/** 29 * TODO: 30 * Deprecate WIFI_STATE_UNKNOWN 31 */ 32import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 33 34import android.Manifest; 35import android.app.ActivityManager; 36import android.app.AlarmManager; 37import android.app.AlertDialog; 38import android.app.PendingIntent; 39import android.app.backup.IBackupManager; 40import android.bluetooth.BluetoothAdapter; 41import android.content.BroadcastReceiver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.IPackageManager; 47import android.content.pm.PackageManager; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.DhcpResults; 51import android.net.BaseDhcpStateMachine; 52import android.net.DhcpStateMachine; 53import android.net.Network; 54import android.net.dhcp.DhcpClient; 55import android.net.InterfaceConfiguration; 56import android.net.IpReachabilityMonitor; 57import android.net.LinkAddress; 58import android.net.LinkProperties; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkFactory; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkRequest; 65import android.net.NetworkUtils; 66import android.net.RouteInfo; 67import android.net.StaticIpConfiguration; 68import android.net.TrafficStats; 69import android.net.wifi.RssiPacketCountInfo; 70import android.net.wifi.ScanResult; 71import android.net.wifi.ScanSettings; 72import android.net.wifi.SupplicantState; 73import android.net.wifi.WifiChannel; 74import android.net.wifi.WifiConfiguration; 75import android.net.wifi.WifiConnectionStatistics; 76import android.net.wifi.WifiEnterpriseConfig; 77import android.net.wifi.WifiInfo; 78import android.net.wifi.WifiLinkLayerStats; 79import android.net.wifi.WifiManager; 80import android.net.wifi.WifiScanner; 81import android.net.wifi.WifiSsid; 82import android.net.wifi.WpsInfo; 83import android.net.wifi.WpsResult; 84import android.net.wifi.WpsResult.Status; 85import android.net.wifi.p2p.IWifiP2pManager; 86import android.os.BatteryStats; 87import android.os.Binder; 88import android.os.Bundle; 89import android.os.IBinder; 90import android.os.INetworkManagementService; 91import android.os.Looper; 92import android.os.Message; 93import android.os.Messenger; 94import android.os.PowerManager; 95import android.os.Process; 96import android.os.RemoteException; 97import android.os.ServiceManager; 98import android.os.SystemClock; 99import android.os.SystemProperties; 100import android.os.UserHandle; 101import android.os.WorkSource; 102import android.provider.Settings; 103import android.telephony.TelephonyManager; 104import android.text.TextUtils; 105import android.util.Log; 106import android.util.LruCache; 107 108import com.android.internal.R; 109import com.android.internal.app.IBatteryStats; 110import com.android.internal.util.AsyncChannel; 111import com.android.internal.util.Protocol; 112import com.android.internal.util.State; 113import com.android.internal.util.StateMachine; 114import com.android.server.net.NetlinkTracker; 115import com.android.server.wifi.hotspot2.NetworkDetail; 116import com.android.server.wifi.hotspot2.SupplicantBridge; 117import com.android.server.wifi.hotspot2.Utils; 118import com.android.server.wifi.p2p.WifiP2pServiceImpl; 119 120import java.io.BufferedReader; 121import java.io.FileDescriptor; 122import java.io.FileNotFoundException; 123import java.io.FileReader; 124import java.io.IOException; 125import java.io.PrintWriter; 126import java.net.Inet4Address; 127import java.net.InetAddress; 128import java.util.ArrayList; 129import java.util.Calendar; 130import java.util.HashSet; 131import java.util.LinkedList; 132import java.util.List; 133import java.util.Locale; 134import java.util.Queue; 135import java.util.Random; 136import java.util.concurrent.atomic.AtomicBoolean; 137import java.util.concurrent.atomic.AtomicInteger; 138import java.util.regex.Pattern; 139 140/** 141 * Track the state of Wifi connectivity. All event handling is done here, 142 * and all changes in connectivity state are initiated here. 143 * 144 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 145 * In the current implementation, we support concurrent wifi p2p and wifi operation. 146 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 147 * handles p2p operation. 148 * 149 * @hide 150 */ 151public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler { 152 153 private static final String NETWORKTYPE = "WIFI"; 154 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 155 private static boolean DBG = false; 156 private static boolean VDBG = false; 157 private static boolean VVDBG = false; 158 private static boolean USE_PAUSE_SCANS = false; 159 private static boolean mLogMessages = false; 160 private static final String TAG = "WifiStateMachine"; 161 162 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 163 164 private static final String GOOGLE_OUI = "DA-A1-19"; 165 166 /* temporary debug flag - best network selection development */ 167 private static boolean PDBG = false; 168 169 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 170 * the corresponding BSSID. 171 */ 172 private boolean didBlackListBSSID = false; 173 174 /** 175 * Log with error attribute 176 * 177 * @param s is string log 178 */ 179 protected void loge(String s) { 180 Log.e(getName(), s); 181 } 182 protected void logd(String s) { 183 Log.d(getName(), s); 184 } 185 protected void log(String s) {; 186 Log.d(getName(), s); 187 } 188 189 private WifiMonitor mWifiMonitor; 190 private WifiNative mWifiNative; 191 private WifiConfigStore mWifiConfigStore; 192 private WifiAutoJoinController mWifiAutoJoinController; 193 private INetworkManagementService mNwService; 194 private ConnectivityManager mCm; 195 private WifiLogger mWifiLogger; 196 197 private final boolean mP2pSupported; 198 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 199 private boolean mTemporarilyDisconnectWifi = false; 200 private final String mPrimaryDeviceType; 201 202 /* Scan results handling */ 203 private List<ScanDetail> mScanResults = new ArrayList<>(); 204 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 205 private static final int SCAN_RESULT_CACHE_SIZE = 160; 206 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 207 // For debug, number of known scan results that were found as part of last scan result event, 208 // as well the number of scans results returned by the supplicant with that message 209 private int mNumScanResultsKnown; 210 private int mNumScanResultsReturned; 211 212 private boolean mScreenOn = false; 213 214 /* Chipset supports background scan */ 215 private final boolean mBackgroundScanSupported; 216 217 private final String mInterfaceName; 218 /* Tethering interface could be separate from wlan interface */ 219 private String mTetherInterfaceName; 220 221 private int mLastSignalLevel = -1; 222 private String mLastBssid; 223 private int mLastNetworkId; // The network Id we successfully joined 224 private boolean linkDebouncing = false; 225 226 private boolean mHalBasedPnoDriverSupported = false; 227 228 // Below booleans are configurations coming from the Developper Settings 229 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 230 private boolean mHalBasedPnoEnableInDevSettings = false; 231 232 233 private int mHalFeatureSet = 0; 234 private static int mPnoResultFound = 0; 235 236 @Override 237 public void onPnoNetworkFound(ScanResult results[]) { 238 if (DBG) { 239 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 240 for (int i = 0; i < results.length; i++) { 241 Log.e(TAG, results[i].toString()); 242 } 243 } 244 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 245 } 246 247 public void processPnoNetworkFound(ScanResult results[]) { 248 ScanSettings settings = new ScanSettings(); 249 settings.channelSet = new ArrayList<WifiChannel>(); 250 StringBuilder sb = new StringBuilder(); 251 sb.append(""); 252 for (int i=0; i<results.length; i++) { 253 WifiChannel channel = new WifiChannel(); 254 channel.freqMHz = results[i].frequency; 255 settings.channelSet.add(channel); 256 sb.append(results[i].SSID).append(" "); 257 } 258 259 stopPnoOffload(); 260 261 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 262 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 263 mPnoResultFound ++; 264 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 265 int delay = 30 * 1000; 266 // reconfigure Pno after 1 minutes if we're still in disconnected state 267 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 268 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 269 (long)delay); 270 mRestartAutoJoinOffloadCounter++; 271 } 272 273 // Testing various network disconnect cases by sending lots of spurious 274 // disconnect to supplicant 275 private boolean testNetworkDisconnect = false; 276 277 private boolean mEnableRssiPolling = false; 278 private boolean mLegacyPnoEnabled = false; 279 private int mRssiPollToken = 0; 280 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 281 * In CONNECT_MODE, the STA can scan and connect to an access point 282 * In SCAN_ONLY_MODE, the STA can only scan for access points 283 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 284 */ 285 private int mOperationalMode = CONNECT_MODE; 286 private boolean mIsScanOngoing = false; 287 private boolean mIsFullScanOngoing = false; 288 private boolean mSendScanResultsBroadcast = false; 289 290 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 291 private WorkSource mScanWorkSource = null; 292 private static final int UNKNOWN_SCAN_SOURCE = -1; 293 private static final int SCAN_ALARM_SOURCE = -2; 294 private static final int ADD_OR_UPDATE_SOURCE = -3; 295 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 296 private static final int ENABLE_WIFI = -5; 297 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 298 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 299 300 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 301 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 302 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 303 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 304 305 /* Tracks if state machine has received any screen state change broadcast yet. 306 * We can miss one of these at boot. 307 */ 308 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 309 310 private boolean mBluetoothConnectionActive = false; 311 312 private PowerManager.WakeLock mSuspendWakeLock; 313 314 /** 315 * Interval in milliseconds between polling for RSSI 316 * and linkspeed information 317 */ 318 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 319 320 /** 321 * Interval in milliseconds between receiving a disconnect event 322 * while connected to a good AP, and handling the disconnect proper 323 */ 324 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 325 326 /** 327 * Delay between supplicant restarts upon failure to establish connection 328 */ 329 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 330 331 /** 332 * Number of times we attempt to restart supplicant 333 */ 334 private static final int SUPPLICANT_RESTART_TRIES = 5; 335 336 private int mSupplicantRestartCount = 0; 337 /* Tracks sequence number on stop failure message */ 338 private int mSupplicantStopFailureToken = 0; 339 340 /** 341 * Tether state change notification time out 342 */ 343 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 344 345 /* Tracks sequence number on a tether notification time out */ 346 private int mTetherToken = 0; 347 348 /** 349 * Driver start time out. 350 */ 351 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 352 353 /* Tracks sequence number on a driver time out */ 354 private int mDriverStartToken = 0; 355 356 /** 357 * The link properties of the wifi interface. 358 * Do not modify this directly; use updateLinkProperties instead. 359 */ 360 private LinkProperties mLinkProperties; 361 362 /* Tracks sequence number on a periodic scan message */ 363 private int mPeriodicScanToken = 0; 364 365 // Wakelock held during wifi start/stop and driver load/unload 366 private PowerManager.WakeLock mWakeLock; 367 368 private Context mContext; 369 370 private final Object mDhcpResultsLock = new Object(); 371 private DhcpResults mDhcpResults; 372 373 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 374 private WifiInfo mWifiInfo; 375 private NetworkInfo mNetworkInfo; 376 private NetworkCapabilities mNetworkCapabilities; 377 private SupplicantStateTracker mSupplicantStateTracker; 378 private BaseDhcpStateMachine mDhcpStateMachine; 379 private boolean mDhcpActive = false; 380 381 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 382 383 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 384 385 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 386 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 387 388 // Roaming failure count 389 private int mRoamFailCount = 0; 390 391 // This is the BSSID we are trying to associate to, it can be set to "any" 392 // if we havent selected a BSSID for joining. 393 // if we havent selected a BSSID for joining. 394 // The BSSID we are associated to is found in mWifiInfo 395 private String mTargetRoamBSSID = "any"; 396 397 private long mLastDriverRoamAttempt = 0; 398 399 private WifiConfiguration targetWificonfiguration = null; 400 401 // Used as debug to indicate which configuration last was saved 402 private WifiConfiguration lastSavedConfigurationAttempt = null; 403 404 // Used as debug to indicate which configuration last was removed 405 private WifiConfiguration lastForgetConfigurationAttempt = null; 406 407 //Random used by softAP channel Selection 408 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 409 410 boolean isRoaming() { 411 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 412 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 413 } 414 415 public void autoRoamSetBSSID(int netId, String bssid) { 416 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 417 } 418 419 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 420 boolean ret = true; 421 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 422 if (bssid == null) bssid = "any"; 423 if (config == null) return false; // Nothing to do 424 425 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 426 return false; // We didnt change anything 427 } 428 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 429 // Changing to ANY 430 if (!mWifiConfigStore.roamOnAny) { 431 ret = false; // Nothing to do 432 } 433 } 434 if (VDBG) { 435 loge("autoRoamSetBSSID " + bssid 436 + " key=" + config.configKey()); 437 } 438 config.autoJoinBSSID = bssid; 439 mTargetRoamBSSID = bssid; 440 mWifiConfigStore.saveWifiConfigBSSID(config); 441 return ret; 442 } 443 444 /** 445 * Save the UID correctly depending on if this is a new or existing network. 446 * @return true if operation is authorized, false otherwise 447 */ 448 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 449 if (!mWifiConfigStore.isNetworkConfigured(config)) { 450 config.creatorUid = uid; 451 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 452 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 453 return false; 454 } 455 456 config.lastUpdateUid = uid; 457 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 458 459 return true; 460 461 } 462 463 /** 464 * Checks to see if user has specified if the apps configuration is connectable. 465 * If the user hasn't specified we query the user and return true. 466 * 467 * @param message The message to be deferred 468 * @param netId Network id of the configuration to check against 469 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 470 * CONFIG_OVERRIDE_PERMISSION 471 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 472 */ 473 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 474 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 475 476 // We can only evaluate saved configurations. 477 if (config == null) { 478 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 479 return true; 480 } 481 482 switch (config.userApproved) { 483 case WifiConfiguration.USER_APPROVED: 484 case WifiConfiguration.USER_BANNED: 485 return false; 486 case WifiConfiguration.USER_PENDING: 487 default: // USER_UNSPECIFIED 488 /* the intention was to ask user here; but a dialog box is * 489 * too invasive; so we are going to allow connection for now */ 490 config.userApproved = WifiConfiguration.USER_APPROVED; 491 return false; 492 } 493 } 494 495 /** 496 * Subset of link properties coming from netlink. 497 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 498 * and domains obtained from router advertisements (RFC 6106). 499 */ 500 private NetlinkTracker mNetlinkTracker; 501 502 private IpReachabilityMonitor mIpReachabilityMonitor; 503 504 private AlarmManager mAlarmManager; 505 private PendingIntent mScanIntent; 506 private PendingIntent mDriverStopIntent; 507 private PendingIntent mPnoIntent; 508 509 private int mDisconnectedPnoAlarmCount = 0; 510 /* Tracks current frequency mode */ 511 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 512 513 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 514 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 515 516 // Channel for sending replies. 517 private AsyncChannel mReplyChannel = new AsyncChannel(); 518 519 private WifiP2pServiceImpl mWifiP2pServiceImpl; 520 521 // Used to initiate a connection with WifiP2pService 522 private AsyncChannel mWifiP2pChannel; 523 private AsyncChannel mWifiApConfigChannel; 524 525 private WifiScanner mWifiScanner; 526 527 private int mConnectionRequests = 0; 528 private WifiNetworkFactory mNetworkFactory; 529 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 530 private WifiNetworkAgent mNetworkAgent; 531 532 private String[] mWhiteListedSsids = null; 533 534 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 535 // We should really persist that into the networkHistory.txt file, and read it back when 536 // WifiStateMachine starts up 537 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 538 539 // Used to filter out requests we couldn't possibly satisfy. 540 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 541 542 /* The base for wifi message types */ 543 static final int BASE = Protocol.BASE_WIFI; 544 /* Start the supplicant */ 545 static final int CMD_START_SUPPLICANT = BASE + 11; 546 /* Stop the supplicant */ 547 static final int CMD_STOP_SUPPLICANT = BASE + 12; 548 /* Start the driver */ 549 static final int CMD_START_DRIVER = BASE + 13; 550 /* Stop the driver */ 551 static final int CMD_STOP_DRIVER = BASE + 14; 552 /* Indicates Static IP succeeded */ 553 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 554 /* Indicates Static IP failed */ 555 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 556 /* Indicates supplicant stop failed */ 557 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 558 /* Delayed stop to avoid shutting down driver too quick*/ 559 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 560 /* A delayed message sent to start driver when it fail to come up */ 561 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 562 563 /* Start the soft access point */ 564 static final int CMD_START_AP = BASE + 21; 565 /* Indicates soft ap start succeeded */ 566 static final int CMD_START_AP_SUCCESS = BASE + 22; 567 /* Indicates soft ap start failed */ 568 static final int CMD_START_AP_FAILURE = BASE + 23; 569 /* Stop the soft access point */ 570 static final int CMD_STOP_AP = BASE + 24; 571 /* Set the soft access point configuration */ 572 static final int CMD_SET_AP_CONFIG = BASE + 25; 573 /* Soft access point configuration set completed */ 574 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 575 /* Request the soft access point configuration */ 576 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 577 /* Response to access point configuration request */ 578 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 579 /* Invoked when getting a tether state change notification */ 580 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 581 /* A delayed message sent to indicate tether state change failed to arrive */ 582 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 583 584 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 585 586 /* Supplicant commands */ 587 /* Is supplicant alive ? */ 588 static final int CMD_PING_SUPPLICANT = BASE + 51; 589 /* Add/update a network configuration */ 590 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 591 /* Delete a network */ 592 static final int CMD_REMOVE_NETWORK = BASE + 53; 593 /* Enable a network. The device will attempt a connection to the given network. */ 594 static final int CMD_ENABLE_NETWORK = BASE + 54; 595 /* Enable all networks */ 596 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 597 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 598 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 599 /* Clear the blacklist network list */ 600 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 601 /* Save configuration */ 602 static final int CMD_SAVE_CONFIG = BASE + 58; 603 /* Get configured networks */ 604 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 605 /* Get available frequencies */ 606 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 607 /* Get adaptors */ 608 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 609 /* Get configured networks with real preSharedKey */ 610 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 611 /* Get Link Layer Stats thru HAL */ 612 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 613 /* Supplicant commands after driver start*/ 614 /* Initiate a scan */ 615 static final int CMD_START_SCAN = BASE + 71; 616 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 617 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 618 /* Disconnect from a network */ 619 static final int CMD_DISCONNECT = BASE + 73; 620 /* Reconnect to a network */ 621 static final int CMD_RECONNECT = BASE + 74; 622 /* Reassociate to a network */ 623 static final int CMD_REASSOCIATE = BASE + 75; 624 /* Get Connection Statistis */ 625 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 626 627 /* Controls suspend mode optimizations 628 * 629 * When high perf mode is enabled, suspend mode optimizations are disabled 630 * 631 * When high perf mode is disabled, suspend mode optimizations are enabled 632 * 633 * Suspend mode optimizations include: 634 * - packet filtering 635 * - turn off roaming 636 * - DTIM wake up settings 637 */ 638 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 639 /* Set the country code */ 640 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 641 /* Enables RSSI poll */ 642 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 643 /* RSSI poll */ 644 static final int CMD_RSSI_POLL = BASE + 83; 645 /* Set up packet filtering */ 646 static final int CMD_START_PACKET_FILTERING = BASE + 84; 647 /* Clear packet filter */ 648 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 649 /* Enable suspend mode optimizations in the driver */ 650 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 651 /* Delayed NETWORK_DISCONNECT */ 652 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 653 /* When there are no saved networks, we do a periodic scan to notify user of 654 * an open network */ 655 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 656 /* Test network Disconnection NETWORK_DISCONNECT */ 657 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 658 659 private int testNetworkDisconnectCounter = 0; 660 661 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 662 static final int MULTICAST_V6 = 1; 663 static final int MULTICAST_V4 = 0; 664 665 /* Set the frequency band */ 666 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 667 /* Enable TDLS on a specific MAC address */ 668 static final int CMD_ENABLE_TDLS = BASE + 92; 669 /* DHCP/IP configuration watchdog */ 670 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 671 672 /** 673 * Watchdog for protecting against b/16823537 674 * Leave time for 4-way handshake to succeed 675 */ 676 static final int ROAM_GUARD_TIMER_MSEC = 15000; 677 678 int roamWatchdogCount = 0; 679 /* Roam state watchdog */ 680 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 681 /* Screen change intent handling */ 682 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 683 684 /* Disconnecting state watchdog */ 685 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 686 687 /* Remove a packages associated configrations */ 688 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 689 690 /* Disable an ephemeral network */ 691 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 692 693 /* Get matching network */ 694 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 695 696 /* alert from firmware */ 697 static final int CMD_FIRMWARE_ALERT = BASE + 100; 698 699 /** 700 * Make this timer 40 seconds, which is about the normal DHCP timeout. 701 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 702 * for more than 30 seconds. 703 */ 704 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 705 706 int obtainingIpWatchdogCount = 0; 707 708 /* Commands from/to the SupplicantStateTracker */ 709 /* Reset the supplicant state tracker */ 710 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 711 712 int disconnectingWatchdogCount = 0; 713 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 714 715 /* P2p commands */ 716 /* We are ok with no response here since we wont do much with it anyway */ 717 public static final int CMD_ENABLE_P2P = BASE + 131; 718 /* In order to shut down supplicant cleanly, we wait till p2p has 719 * been disabled */ 720 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 721 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 722 723 public static final int CMD_BOOT_COMPLETED = BASE + 134; 724 725 /* We now have a valid IP configuration. */ 726 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 727 /* We no longer have a valid IP configuration. */ 728 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 729 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 730 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 731 732 /* Supplicant is trying to associate to a given BSSID */ 733 static final int CMD_TARGET_BSSID = BASE + 141; 734 735 /* Reload all networks and reconnect */ 736 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 737 738 static final int CMD_AUTO_CONNECT = BASE + 143; 739 740 static final int network_status_unwanted_disconnect = 0; 741 static final int network_status_unwanted_disable_autojoin = 1; 742 743 static final int CMD_UNWANTED_NETWORK = BASE + 144; 744 745 static final int CMD_AUTO_ROAM = BASE + 145; 746 747 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 748 749 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 750 751 static final int CMD_NETWORK_STATUS = BASE + 148; 752 753 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 754 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 755 756 /* Remove a packages associated configrations */ 757 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 758 759 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 760 761 /* used to restart PNO when it was stopped due to association attempt */ 762 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 763 764 static int mRestartAutoJoinOffloadCounter = 0; 765 766 /* used to log if PNO was started */ 767 static final int CMD_STARTED_PNO_DBG = BASE + 155; 768 769 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 770 771 /* used to log if PNO was started */ 772 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 773 774 /* used to log if GSCAN was started */ 775 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 776 777 778 /* Wifi state machine modes of operation */ 779 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 780 public static final int CONNECT_MODE = 1; 781 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 782 public static final int SCAN_ONLY_MODE = 2; 783 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 784 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 785 786 private static final int SUCCESS = 1; 787 private static final int FAILURE = -1; 788 789 /* Tracks if suspend optimizations need to be disabled by DHCP, 790 * screen or due to high perf mode. 791 * When any of them needs to disable it, we keep the suspend optimizations 792 * disabled 793 */ 794 private int mSuspendOptNeedsDisabled = 0; 795 796 private static final int SUSPEND_DUE_TO_DHCP = 1; 797 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 798 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 799 800 /* Tracks if user has enabled suspend optimizations through settings */ 801 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 802 803 /** 804 * Default framework scan interval in milliseconds. This is used in the scenario in which 805 * wifi chipset does not support background scanning to set up a 806 * periodic wake up scan so that the device can connect to a new access 807 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 808 * override this. 809 */ 810 private final int mDefaultFrameworkScanIntervalMs; 811 812 813 /** 814 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 815 */ 816 private final int mNoNetworksPeriodicScan; 817 818 /** 819 * Supplicant scan interval in milliseconds. 820 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 821 * from the default config if the setting is not set 822 */ 823 private long mSupplicantScanIntervalMs; 824 825 /** 826 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 827 */ 828 private long lastFullBandConnectedTimeMilli; 829 830 /** 831 * time interval to the next full band scan we will perform for 832 * autojoin while connected with screen lit 833 */ 834 private long fullBandConnectedTimeIntervalMilli; 835 836 /** 837 * max time interval to the next full band scan we will perform for 838 * autojoin while connected with screen lit 839 * Max time is 5 minutes 840 */ 841 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 842 843 /** 844 * Minimum time interval between enabling all networks. 845 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 846 * due to enabling every time. We add a threshold to avoid this. 847 */ 848 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 849 private long mLastEnableAllNetworksTime; 850 851 int mRunningBeaconCount = 0; 852 853 /** 854 * Starting and shutting down driver too quick causes problems leading to driver 855 * being in a bad state. Delay driver stop. 856 */ 857 private final int mDriverStopDelayMs; 858 private int mDelayedStopCounter; 859 private boolean mInDelayedStop = false; 860 861 // there is a delay between StateMachine change country code and Supplicant change country code 862 // here save the current WifiStateMachine set country code 863 private volatile String mSetCountryCode = null; 864 865 // Supplicant doesn't like setting the same country code multiple times (it may drop 866 // currently connected network), so we save the current device set country code here to avoid 867 // redundency 868 private String mDriverSetCountryCode = null; 869 870 /* Default parent state */ 871 private State mDefaultState = new DefaultState(); 872 /* Temporary initial state */ 873 private State mInitialState = new InitialState(); 874 /* Driver loaded, waiting for supplicant to start */ 875 private State mSupplicantStartingState = new SupplicantStartingState(); 876 /* Driver loaded and supplicant ready */ 877 private State mSupplicantStartedState = new SupplicantStartedState(); 878 /* Waiting for supplicant to stop and monitor to exit */ 879 private State mSupplicantStoppingState = new SupplicantStoppingState(); 880 /* Driver start issued, waiting for completed event */ 881 private State mDriverStartingState = new DriverStartingState(); 882 /* Driver started */ 883 private State mDriverStartedState = new DriverStartedState(); 884 /* Wait until p2p is disabled 885 * This is a special state which is entered right after we exit out of DriverStartedState 886 * before transitioning to another state. 887 */ 888 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 889 /* Driver stopping */ 890 private State mDriverStoppingState = new DriverStoppingState(); 891 /* Driver stopped */ 892 private State mDriverStoppedState = new DriverStoppedState(); 893 /* Scan for networks, no connection will be established */ 894 private State mScanModeState = new ScanModeState(); 895 /* Connecting to an access point */ 896 private State mConnectModeState = new ConnectModeState(); 897 /* Connected at 802.11 (L2) level */ 898 private State mL2ConnectedState = new L2ConnectedState(); 899 /* fetching IP after connection to access point (assoc+auth complete) */ 900 private State mObtainingIpState = new ObtainingIpState(); 901 /* Waiting for link quality verification to be complete */ 902 private State mVerifyingLinkState = new VerifyingLinkState(); 903 /* Connected with IP addr */ 904 private State mConnectedState = new ConnectedState(); 905 /* Roaming */ 906 private State mRoamingState = new RoamingState(); 907 /* disconnect issued, waiting for network disconnect confirmation */ 908 private State mDisconnectingState = new DisconnectingState(); 909 /* Network is not connected, supplicant assoc+auth is not complete */ 910 private State mDisconnectedState = new DisconnectedState(); 911 /* Waiting for WPS to be completed*/ 912 private State mWpsRunningState = new WpsRunningState(); 913 914 /* Soft ap is starting up */ 915 private State mSoftApStartingState = new SoftApStartingState(); 916 /* Soft ap is running */ 917 private State mSoftApStartedState = new SoftApStartedState(); 918 /* Soft ap is running and we are waiting for tether notification */ 919 private State mTetheringState = new TetheringState(); 920 /* Soft ap is running and we are tethered through connectivity service */ 921 private State mTetheredState = new TetheredState(); 922 /* Waiting for untether confirmation before stopping soft Ap */ 923 private State mUntetheringState = new UntetheringState(); 924 925 926 927 private class WifiScanListener implements WifiScanner.ScanListener { 928 @Override 929 public void onSuccess() { 930 Log.e(TAG, "WifiScanListener onSuccess"); 931 }; 932 @Override 933 public void onFailure(int reason, String description) { 934 Log.e(TAG, "WifiScanListener onFailure"); 935 }; 936 @Override 937 public void onPeriodChanged(int periodInMs) { 938 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 939 } 940 @Override 941 public void onResults(WifiScanner.ScanData[] results) { 942 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 943 } 944 @Override 945 public void onFullResult(ScanResult fullScanResult) { 946 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 947 } 948 949 WifiScanListener() {} 950 } 951 952 WifiScanListener mWifiScanListener = new WifiScanListener(); 953 954 955 private class TetherStateChange { 956 ArrayList<String> available; 957 ArrayList<String> active; 958 959 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 960 available = av; 961 active = ac; 962 } 963 } 964 965 public static class SimAuthRequestData { 966 int networkId; 967 int protocol; 968 String ssid; 969 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 970 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 971 String[] data; 972 } 973 974 /** 975 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 976 * {@link WifiManager#WIFI_STATE_DISABLING}, 977 * {@link WifiManager#WIFI_STATE_ENABLED}, 978 * {@link WifiManager#WIFI_STATE_ENABLING}, 979 * {@link WifiManager#WIFI_STATE_UNKNOWN} 980 */ 981 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 982 983 /** 984 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 985 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 986 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 987 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 988 * {@link WifiManager#WIFI_AP_STATE_FAILED} 989 */ 990 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 991 992 private static final int SCAN_REQUEST = 0; 993 private static final String ACTION_START_SCAN = 994 "com.android.server.WifiManager.action.START_SCAN"; 995 996 private static final int PNO_START_REQUEST = 0; 997 private static final String ACTION_START_PNO = 998 "com.android.server.WifiManager.action.START_PNO"; 999 1000 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1001 private static final int DRIVER_STOP_REQUEST = 0; 1002 private static final String ACTION_DELAYED_DRIVER_STOP = 1003 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1004 1005 /** 1006 * Keep track of whether WIFI is running. 1007 */ 1008 private boolean mIsRunning = false; 1009 1010 /** 1011 * Keep track of whether we last told the battery stats we had started. 1012 */ 1013 private boolean mReportedRunning = false; 1014 1015 /** 1016 * Most recently set source of starting WIFI. 1017 */ 1018 private final WorkSource mRunningWifiUids = new WorkSource(); 1019 1020 /** 1021 * The last reported UIDs that were responsible for starting WIFI. 1022 */ 1023 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1024 1025 private final IBatteryStats mBatteryStats; 1026 1027 private String mTcpBufferSizes = null; 1028 1029 // Used for debug and stats gathering 1030 private static int sScanAlarmIntentCount = 0; 1031 1032 final static int frameworkMinScanIntervalSaneValue = 10000; 1033 1034 boolean mPnoEnabled; 1035 boolean mLazyRoamEnabled; 1036 long mGScanStartTimeMilli; 1037 long mGScanPeriodMilli; 1038 1039 public WifiStateMachine(Context context, String wlanInterface, 1040 WifiTrafficPoller trafficPoller) { 1041 super("WifiStateMachine"); 1042 mContext = context; 1043 mSetCountryCode = Settings.Global.getString( 1044 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1045 mInterfaceName = wlanInterface; 1046 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1047 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1048 BatteryStats.SERVICE_NAME)); 1049 1050 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1051 mNwService = INetworkManagementService.Stub.asInterface(b); 1052 1053 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1054 PackageManager.FEATURE_WIFI_DIRECT); 1055 1056 mWifiNative = new WifiNative(mInterfaceName); 1057 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 1058 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1059 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1060 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1061 mWifiLogger = new WifiLogger(this); 1062 1063 mWifiInfo = new WifiInfo(); 1064 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1065 getHandler()); 1066 mLinkProperties = new LinkProperties(); 1067 1068 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1069 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1070 1071 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1072 1073 mNetworkInfo.setIsAvailable(false); 1074 mLastBssid = null; 1075 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1076 mLastSignalLevel = -1; 1077 1078 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1079 public void update() { 1080 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1081 } 1082 }); 1083 try { 1084 mNwService.registerObserver(mNetlinkTracker); 1085 } catch (RemoteException e) { 1086 loge("Couldn't register netlink tracker: " + e.toString()); 1087 } 1088 1089 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1090 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1091 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1092 1093 // Make sure the interval is not configured less than 10 seconds 1094 int period = mContext.getResources().getInteger( 1095 R.integer.config_wifi_framework_scan_interval); 1096 if (period < frameworkMinScanIntervalSaneValue) { 1097 period = frameworkMinScanIntervalSaneValue; 1098 } 1099 mDefaultFrameworkScanIntervalMs = period; 1100 1101 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1102 R.integer.config_wifi_no_network_periodic_scan_interval); 1103 1104 mDriverStopDelayMs = mContext.getResources().getInteger( 1105 R.integer.config_wifi_driver_stop_delay); 1106 1107 mBackgroundScanSupported = mContext.getResources().getBoolean( 1108 R.bool.config_wifi_background_scan_support); 1109 1110 mPrimaryDeviceType = mContext.getResources().getString( 1111 R.string.config_wifi_p2p_device_type); 1112 1113 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1114 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1115 1116 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1117 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1118 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1119 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1120 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1121 // TODO - needs to be a bit more dynamic 1122 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1123 1124 mContext.registerReceiver( 1125 new BroadcastReceiver() { 1126 @Override 1127 public void onReceive(Context context, Intent intent) { 1128 ArrayList<String> available = intent.getStringArrayListExtra( 1129 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1130 ArrayList<String> active = intent.getStringArrayListExtra( 1131 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1132 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1133 } 1134 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1135 1136 mContext.registerReceiver( 1137 new BroadcastReceiver() { 1138 @Override 1139 public void onReceive(Context context, Intent intent) { 1140 sScanAlarmIntentCount++; // Used for debug only 1141 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1142 if (VDBG) 1143 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1144 } 1145 }, 1146 new IntentFilter(ACTION_START_SCAN)); 1147 1148 mContext.registerReceiver( 1149 new BroadcastReceiver() { 1150 @Override 1151 public void onReceive(Context context, Intent intent) { 1152 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1153 mRestartAutoJoinOffloadCounter, "pno alarm"); 1154 if (DBG) 1155 loge("WiFiStateMachine PNO START ALARM sent"); 1156 } 1157 }, 1158 new IntentFilter(ACTION_START_PNO)); 1159 1160 1161 IntentFilter filter = new IntentFilter(); 1162 filter.addAction(Intent.ACTION_SCREEN_ON); 1163 filter.addAction(Intent.ACTION_SCREEN_OFF); 1164 mContext.registerReceiver( 1165 new BroadcastReceiver() { 1166 @Override 1167 public void onReceive(Context context, Intent intent) { 1168 String action = intent.getAction(); 1169 1170 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1171 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1172 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1173 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1174 } 1175 } 1176 }, filter); 1177 1178 mContext.registerReceiver( 1179 new BroadcastReceiver() { 1180 @Override 1181 public void onReceive(Context context, Intent intent) { 1182 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1183 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1184 } 1185 }, 1186 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1187 1188 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1189 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1190 new ContentObserver(getHandler()) { 1191 @Override 1192 public void onChange(boolean selfChange) { 1193 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1194 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1195 } 1196 }); 1197 1198 mContext.registerReceiver( 1199 new BroadcastReceiver() { 1200 @Override 1201 public void onReceive(Context context, Intent intent) { 1202 sendMessage(CMD_BOOT_COMPLETED); 1203 } 1204 }, 1205 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1206 1207 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1208 1209 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1210 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1211 1212 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1213 mSuspendWakeLock.setReferenceCounted(false); 1214 1215 mTcpBufferSizes = mContext.getResources().getString( 1216 com.android.internal.R.string.config_wifi_tcp_buffers); 1217 1218 addState(mDefaultState); 1219 addState(mInitialState, mDefaultState); 1220 addState(mSupplicantStartingState, mDefaultState); 1221 addState(mSupplicantStartedState, mDefaultState); 1222 addState(mDriverStartingState, mSupplicantStartedState); 1223 addState(mDriverStartedState, mSupplicantStartedState); 1224 addState(mScanModeState, mDriverStartedState); 1225 addState(mConnectModeState, mDriverStartedState); 1226 addState(mL2ConnectedState, mConnectModeState); 1227 addState(mObtainingIpState, mL2ConnectedState); 1228 addState(mVerifyingLinkState, mL2ConnectedState); 1229 addState(mConnectedState, mL2ConnectedState); 1230 addState(mRoamingState, mL2ConnectedState); 1231 addState(mDisconnectingState, mConnectModeState); 1232 addState(mDisconnectedState, mConnectModeState); 1233 addState(mWpsRunningState, mConnectModeState); 1234 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1235 addState(mDriverStoppingState, mSupplicantStartedState); 1236 addState(mDriverStoppedState, mSupplicantStartedState); 1237 addState(mSupplicantStoppingState, mDefaultState); 1238 addState(mSoftApStartingState, mDefaultState); 1239 addState(mSoftApStartedState, mDefaultState); 1240 addState(mTetheringState, mSoftApStartedState); 1241 addState(mTetheredState, mSoftApStartedState); 1242 addState(mUntetheringState, mSoftApStartedState); 1243 1244 setInitialState(mInitialState); 1245 1246 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1247 setLogOnlyTransitions(false); 1248 if (VDBG) setDbg(true); 1249 1250 //start the state machine 1251 start(); 1252 1253 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1254 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1255 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1256 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1257 } 1258 1259 1260 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1261 Intent intent = new Intent(action, null); 1262 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1263 //intent.setPackage(this.getClass().getPackage().getName()); 1264 intent.setPackage("android"); 1265 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1266 } 1267 1268 private int mVerboseLoggingLevel = 0; 1269 1270 int getVerboseLoggingLevel() { 1271 return mVerboseLoggingLevel; 1272 } 1273 1274 void enableVerboseLogging(int verbose) { 1275 mVerboseLoggingLevel = verbose; 1276 if (verbose > 0) { 1277 DBG = true; 1278 VDBG = true; 1279 PDBG = true; 1280 mLogMessages = true; 1281 mWifiNative.setSupplicantLogLevel("DEBUG"); 1282 } else { 1283 DBG = false; 1284 VDBG = false; 1285 PDBG = false; 1286 mLogMessages = false; 1287 mWifiNative.setSupplicantLogLevel("INFO"); 1288 } 1289 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1290 mWifiAutoJoinController.enableVerboseLogging(verbose); 1291 mWifiMonitor.enableVerboseLogging(verbose); 1292 mWifiNative.enableVerboseLogging(verbose); 1293 mWifiConfigStore.enableVerboseLogging(verbose); 1294 mSupplicantStateTracker.enableVerboseLogging(verbose); 1295 } 1296 1297 public void setHalBasedAutojoinOffload(int enabled) { 1298 // Shoult be used for debug only, triggered form developper settings 1299 // enabling HAl based PNO dynamically is not safe and not a normal operation 1300 mHalBasedPnoEnableInDevSettings = enabled > 0; 1301 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1302 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1303 sendMessage(CMD_DISCONNECT); 1304 } 1305 1306 public void setAllowNetworkSwitchingWhileAssociated(int enabled) { 1307 mEnableAssociatedNetworkSwitchingInDevSettings = enabled > 0; 1308 } 1309 1310 int getHalBasedAutojoinOffload() { 1311 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1312 } 1313 1314 int getAllowNetworkSwitchingWhileAssociated() { 1315 return mEnableAssociatedNetworkSwitchingInDevSettings ? 1 : 0; 1316 } 1317 1318 boolean useHalBasedAutoJoinOffload() { 1319 // all three settings need to be true: 1320 // - developper settings switch 1321 // - driver support 1322 // - config option 1323 return mHalBasedPnoEnableInDevSettings 1324 && mHalBasedPnoDriverSupported 1325 && mWifiConfigStore.enableHalBasedPno.get(); 1326 } 1327 1328 boolean allowFullBandScanAndAssociated() { 1329 1330 if (!mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 1331 if (DBG) { 1332 Log.e(TAG, "allowFullBandScanAndAssociated: " 1333 + " enableAutoJoinScanWhenAssociated : disallow"); 1334 } 1335 return false; 1336 } 1337 1338 if (mWifiInfo.txSuccessRate > 1339 mWifiConfigStore.maxTxPacketForFullScans 1340 || mWifiInfo.rxSuccessRate > 1341 mWifiConfigStore.maxRxPacketForFullScans) { 1342 if (DBG) { 1343 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1344 + mWifiInfo.txSuccessRate + " rx " 1345 + mWifiInfo.rxSuccessRate 1346 + " allow scan with traffic " + getAllowScansWithTraffic()); 1347 } 1348 // Too much traffic at the interface, hence no full band scan 1349 if (getAllowScansWithTraffic() == 0) { 1350 return false; 1351 } 1352 } 1353 1354 if (getCurrentState() != mConnectedState) { 1355 if (DBG) { 1356 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1357 } 1358 return false; 1359 } 1360 1361 return true; 1362 } 1363 1364 long mLastScanPermissionUpdate = 0; 1365 boolean mConnectedModeGScanOffloadStarted = false; 1366 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1367 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1368 // we want to throttle the GScan Stop->Start transition 1369 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1370 void updateAssociatedScanPermission() { 1371 1372 if (useHalBasedAutoJoinOffload()) { 1373 boolean allowed = allowFullBandScanAndAssociated(); 1374 1375 long now = System.currentTimeMillis(); 1376 if (mConnectedModeGScanOffloadStarted && !allowed) { 1377 if (DBG) { 1378 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1379 } 1380 stopPnoOffload(); 1381 stopGScan(" useHalBasedAutoJoinOffload"); 1382 } 1383 if (!mConnectedModeGScanOffloadStarted && allowed) { 1384 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1385 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1386 // to look for 5GHz BSSIDs and better networks 1387 if (DBG) { 1388 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1389 } 1390 startGScanConnectedModeOffload("updatePermission " 1391 + (now - mLastScanPermissionUpdate) + "ms"); 1392 mLastScanPermissionUpdate = now; 1393 } 1394 } 1395 } 1396 } 1397 1398 private int mAggressiveHandover = 0; 1399 1400 int getAggressiveHandover() { 1401 return mAggressiveHandover; 1402 } 1403 1404 void enableAggressiveHandover(int enabled) { 1405 mAggressiveHandover = enabled; 1406 } 1407 1408 public void clearANQPCache() { 1409 mWifiConfigStore.trimANQPCache(true); 1410 } 1411 1412 public void setAllowScansWithTraffic(int enabled) { 1413 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1414 } 1415 1416 public int getAllowScansWithTraffic() { 1417 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1418 } 1419 1420 public void setAllowScansWhileAssociated(int enabled) { 1421 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled > 0 ? true : false); 1422 } 1423 1424 public int getAllowScansWhileAssociated() { 1425 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get() ? 1 : 0; 1426 } 1427 1428 /* 1429 * 1430 * Framework scan control 1431 */ 1432 1433 private boolean mAlarmEnabled = false; 1434 1435 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1436 1437 private void setScanAlarm(boolean enabled) { 1438 if (PDBG) { 1439 String state; 1440 if (enabled) state = "enabled"; else state = "disabled"; 1441 loge("setScanAlarm " + state 1442 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1443 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1444 } 1445 if (mBackgroundScanSupported == false) { 1446 // Scan alarm is only used for background scans if they are not 1447 // offloaded to the wifi chipset, hence enable the scan alarm 1448 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1449 enabled = true; 1450 } 1451 1452 if (enabled == mAlarmEnabled) return; 1453 if (enabled) { 1454 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1455 /* going to wake up the host processor to look for access points */ 1456 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1457 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1458 mScanIntent); 1459 mAlarmEnabled = true; 1460 } else { 1461 mAlarmManager.cancel(mScanIntent); 1462 mAlarmEnabled = false; 1463 } 1464 } 1465 1466 private void cancelDelayedScan() { 1467 mDelayedScanCounter.incrementAndGet(); 1468 } 1469 1470 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1471 ScanSettings settings, WorkSource workSource) { 1472 1473 if (counter != mDelayedScanCounter.get()) { 1474 return false; 1475 } 1476 if (restart) 1477 startDelayedScan(milli, settings, workSource); 1478 return true; 1479 } 1480 1481 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1482 if (milli <= 0) return; 1483 /** 1484 * The cases where the scan alarm should be run are : 1485 * - DisconnectedState && screenOn => used delayed timer 1486 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1487 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1488 * - ConnectedState && screenOn => used delayed timer 1489 */ 1490 1491 mDelayedScanCounter.incrementAndGet(); 1492 if (mScreenOn && 1493 (getCurrentState() == mDisconnectedState 1494 || getCurrentState() == mConnectedState)) { 1495 Bundle bundle = new Bundle(); 1496 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1497 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1498 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1499 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1500 mDelayedScanCounter.get(), bundle, milli); 1501 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1502 } else if (mBackgroundScanSupported == false 1503 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1504 setScanAlarm(true); 1505 if (DBG) loge("startDelayedScan start scan alarm -> " 1506 + mDelayedScanCounter + " milli " + milli); 1507 } else { 1508 if (DBG) loge("startDelayedScan unhandled -> " 1509 + mDelayedScanCounter + " milli " + milli); 1510 } 1511 } 1512 1513 private boolean setRandomMacOui() { 1514 String oui = mContext.getResources().getString( 1515 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1516 String[] ouiParts = oui.split("-"); 1517 byte[] ouiBytes = new byte[3]; 1518 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1519 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1520 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1521 1522 logd("Setting OUI to " + oui); 1523 return mWifiNative.setScanningMacOui(ouiBytes); 1524 } 1525 1526 /** 1527 * ****************************************************** 1528 * Methods exposed for public use 1529 * ****************************************************** 1530 */ 1531 1532 public Messenger getMessenger() { 1533 return new Messenger(getHandler()); 1534 } 1535 1536 public WifiMonitor getWifiMonitor() { 1537 return mWifiMonitor; 1538 } 1539 1540 /** 1541 * TODO: doc 1542 */ 1543 public boolean syncPingSupplicant(AsyncChannel channel) { 1544 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1545 boolean result = (resultMsg.arg1 != FAILURE); 1546 resultMsg.recycle(); 1547 return result; 1548 } 1549 1550 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1551 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1552 List<WifiChannel> list = null; 1553 if (resultMsg.obj != null) { 1554 list = new ArrayList<WifiChannel>(); 1555 String freqs = (String) resultMsg.obj; 1556 String[] lines = freqs.split("\n"); 1557 for (String line : lines) 1558 if (line.contains("MHz")) { 1559 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1560 WifiChannel c = new WifiChannel(); 1561 String[] prop = line.split(" "); 1562 if (prop.length < 5) continue; 1563 try { 1564 c.channelNum = Integer.parseInt(prop[1]); 1565 c.freqMHz = Integer.parseInt(prop[3]); 1566 } catch (NumberFormatException e) { 1567 } 1568 c.isDFS = line.contains("(DFS)"); 1569 list.add(c); 1570 } else if (line.contains("Mode[B] Channels:")) { 1571 // B channels are the same as G channels, skipped 1572 break; 1573 } 1574 } 1575 resultMsg.recycle(); 1576 return (list != null && list.size() > 0) ? list : null; 1577 } 1578 1579 /** 1580 * When settings allowing making use of untrusted networks change, trigger a scan 1581 * so as to kick of autojoin. 1582 */ 1583 public void startScanForUntrustedSettingChange() { 1584 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1585 } 1586 1587 /** 1588 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1589 * given to callingUid. 1590 * 1591 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1592 * workSource is specified. 1593 * @param workSource If not null, blame is given to workSource. 1594 * @param settings Scan settings, see {@link ScanSettings}. 1595 */ 1596 public void startScan(int callingUid, int scanCounter, 1597 ScanSettings settings, WorkSource workSource) { 1598 Bundle bundle = new Bundle(); 1599 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1600 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1601 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1602 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1603 } 1604 1605 // called from BroadcastListener 1606 1607 /** 1608 * Start reading new scan data 1609 * Data comes in as: 1610 * "scancount=5\n" 1611 * "nextcount=5\n" 1612 * "apcount=3\n" 1613 * "trunc\n" (optional) 1614 * "bssid=...\n" 1615 * "ssid=...\n" 1616 * "freq=...\n" (in Mhz) 1617 * "level=...\n" 1618 * "dist=...\n" (in cm) 1619 * "distsd=...\n" (standard deviation, in cm) 1620 * "====" 1621 * "bssid=...\n" 1622 * etc 1623 * "====" 1624 * "bssid=...\n" 1625 * etc 1626 * "%%%%" 1627 * "apcount=2\n" 1628 * "bssid=...\n" 1629 * etc 1630 * "%%%% 1631 * etc 1632 * "----" 1633 */ 1634 private final static boolean DEBUG_PARSE = false; 1635 1636 private long mDisconnectedTimeStamp = 0; 1637 1638 public long getDisconnectedTimeMilli() { 1639 if (getCurrentState() == mDisconnectedState 1640 && mDisconnectedTimeStamp != 0) { 1641 long now_ms = System.currentTimeMillis(); 1642 return now_ms - mDisconnectedTimeStamp; 1643 } 1644 return 0; 1645 } 1646 1647 // Keeping track of scan requests 1648 private long lastStartScanTimeStamp = 0; 1649 private long lastScanDuration = 0; 1650 // Last connect attempt is used to prevent scan requests: 1651 // - for a period of 10 seconds after attempting to connect 1652 private long lastConnectAttempt = 0; 1653 private String lastScanFreqs = null; 1654 1655 // For debugging, keep track of last message status handling 1656 // TODO, find an equivalent mechanism as part of parent class 1657 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1658 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1659 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1660 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1661 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1662 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1663 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1664 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1665 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1666 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1667 1668 private int messageHandlingStatus = 0; 1669 1670 //TODO: this is used only to track connection attempts, however the link state and packet per 1671 //TODO: second logic should be folded into that 1672 private boolean checkOrDeferScanAllowed(Message msg) { 1673 long now = System.currentTimeMillis(); 1674 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1675 Message dmsg = Message.obtain(msg); 1676 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1677 return false; 1678 } 1679 return true; 1680 } 1681 1682 private int mOnTime = 0; 1683 private int mTxTime = 0; 1684 private int mRxTime = 0; 1685 private int mOnTimeStartScan = 0; 1686 private int mTxTimeStartScan = 0; 1687 private int mRxTimeStartScan = 0; 1688 private int mOnTimeScan = 0; 1689 private int mTxTimeScan = 0; 1690 private int mRxTimeScan = 0; 1691 private int mOnTimeThisScan = 0; 1692 private int mTxTimeThisScan = 0; 1693 private int mRxTimeThisScan = 0; 1694 1695 private int mOnTimeScreenStateChange = 0; 1696 private int mOnTimeAtLastReport = 0; 1697 private long lastOntimeReportTimeStamp = 0; 1698 private long lastScreenStateChangeTimeStamp = 0; 1699 private int mOnTimeLastReport = 0; 1700 private int mTxTimeLastReport = 0; 1701 private int mRxTimeLastReport = 0; 1702 1703 private long lastLinkLayerStatsUpdate = 0; 1704 1705 String reportOnTime() { 1706 long now = System.currentTimeMillis(); 1707 StringBuilder sb = new StringBuilder(); 1708 // Report stats since last report 1709 int on = mOnTime - mOnTimeLastReport; 1710 mOnTimeLastReport = mOnTime; 1711 int tx = mTxTime - mTxTimeLastReport; 1712 mTxTimeLastReport = mTxTime; 1713 int rx = mRxTime - mRxTimeLastReport; 1714 mRxTimeLastReport = mRxTime; 1715 int period = (int) (now - lastOntimeReportTimeStamp); 1716 lastOntimeReportTimeStamp = now; 1717 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1718 // Report stats since Screen State Changed 1719 on = mOnTime - mOnTimeScreenStateChange; 1720 period = (int) (now - lastScreenStateChangeTimeStamp); 1721 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1722 return sb.toString(); 1723 } 1724 1725 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1726 WifiLinkLayerStats stats = null; 1727 if (mWifiLinkLayerStatsSupported > 0) { 1728 String name = "wlan0"; 1729 stats = mWifiNative.getWifiLinkLayerStats(name); 1730 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1731 mWifiLinkLayerStatsSupported -= 1; 1732 } else if (stats != null) { 1733 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1734 mOnTime = stats.on_time; 1735 mTxTime = stats.tx_time; 1736 mRxTime = stats.rx_time; 1737 mRunningBeaconCount = stats.beacon_rx; 1738 if (dbg) { 1739 // loge(stats.toString()); 1740 } 1741 } 1742 } 1743 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1744 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1745 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1746 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1747 } else { 1748 mWifiInfo.updatePacketRates(stats); 1749 } 1750 if (useHalBasedAutoJoinOffload()) { 1751 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1752 } 1753 return stats; 1754 } 1755 1756 void startRadioScanStats() { 1757 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1758 if (stats != null) { 1759 mOnTimeStartScan = stats.on_time; 1760 mTxTimeStartScan = stats.tx_time; 1761 mRxTimeStartScan = stats.rx_time; 1762 mOnTime = stats.on_time; 1763 mTxTime = stats.tx_time; 1764 mRxTime = stats.rx_time; 1765 } 1766 } 1767 1768 void closeRadioScanStats() { 1769 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1770 if (stats != null) { 1771 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1772 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1773 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1774 mOnTimeScan += mOnTimeThisScan; 1775 mTxTimeScan += mTxTimeThisScan; 1776 mRxTimeScan += mRxTimeThisScan; 1777 } 1778 } 1779 1780 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1781 private void noteScanStart(int callingUid, WorkSource workSource) { 1782 long now = System.currentTimeMillis(); 1783 lastStartScanTimeStamp = now; 1784 lastScanDuration = 0; 1785 if (DBG) { 1786 String ts = String.format("[%,d ms]", now); 1787 if (workSource != null) { 1788 loge(ts + " noteScanStart" + workSource.toString() 1789 + " uid " + Integer.toString(callingUid)); 1790 } else { 1791 loge(ts + " noteScanstart no scan source" 1792 + " uid " + Integer.toString(callingUid)); 1793 } 1794 } 1795 startRadioScanStats(); 1796 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1797 && callingUid != SCAN_ALARM_SOURCE) 1798 || workSource != null)) { 1799 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1800 1801 WorkSource batteryWorkSource = mScanWorkSource; 1802 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1803 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1804 batteryWorkSource = new WorkSource(Process.WIFI_UID); 1805 } 1806 1807 try { 1808 mBatteryStats.noteWifiScanStartedFromSource(batteryWorkSource); 1809 } catch (RemoteException e) { 1810 log(e.toString()); 1811 } 1812 } 1813 } 1814 1815 private void noteScanEnd() { 1816 long now = System.currentTimeMillis(); 1817 if (lastStartScanTimeStamp != 0) { 1818 lastScanDuration = now - lastStartScanTimeStamp; 1819 } 1820 lastStartScanTimeStamp = 0; 1821 if (DBG) { 1822 String ts = String.format("[%,d ms]", now); 1823 if (mScanWorkSource != null) 1824 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1825 + " onTime=" + mOnTimeThisScan); 1826 else 1827 loge(ts + " noteScanEnd no scan source" 1828 + " onTime=" + mOnTimeThisScan); 1829 } 1830 if (mScanWorkSource != null) { 1831 try { 1832 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1833 } catch (RemoteException e) { 1834 log(e.toString()); 1835 } finally { 1836 mScanWorkSource = null; 1837 } 1838 } 1839 } 1840 1841 private void handleScanRequest(int type, Message message) { 1842 ScanSettings settings = null; 1843 WorkSource workSource = null; 1844 1845 // unbundle parameters 1846 Bundle bundle = (Bundle) message.obj; 1847 1848 if (bundle != null) { 1849 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1850 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1851 } 1852 1853 // parse scan settings 1854 String freqs = null; 1855 if (settings != null && settings.channelSet != null) { 1856 StringBuilder sb = new StringBuilder(); 1857 boolean first = true; 1858 for (WifiChannel channel : settings.channelSet) { 1859 if (!first) sb.append(','); 1860 else first = false; 1861 sb.append(channel.freqMHz); 1862 } 1863 freqs = sb.toString(); 1864 } 1865 1866 // call wifi native to start the scan 1867 if (startScanNative(type, freqs)) { 1868 // only count battery consumption if scan request is accepted 1869 noteScanStart(message.arg1, workSource); 1870 // a full scan covers everything, clearing scan request buffer 1871 if (freqs == null) 1872 mBufferedScanMsg.clear(); 1873 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1874 if (workSource != null) { 1875 // External worksource was passed along the scan request, 1876 // hence always send a broadcast 1877 mSendScanResultsBroadcast = true; 1878 } 1879 return; 1880 } 1881 1882 // if reach here, scan request is rejected 1883 1884 if (!mIsScanOngoing) { 1885 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1886 1887 // discard this request and pop up the next one 1888 if (mBufferedScanMsg.size() > 0) { 1889 sendMessage(mBufferedScanMsg.remove()); 1890 } 1891 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1892 } else if (!mIsFullScanOngoing) { 1893 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1894 // buffer the scan request to make sure specified channels will be scanned eventually 1895 if (freqs == null) 1896 mBufferedScanMsg.clear(); 1897 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1898 Message msg = obtainMessage(CMD_START_SCAN, 1899 message.arg1, message.arg2, bundle); 1900 mBufferedScanMsg.add(msg); 1901 } else { 1902 // if too many requests in buffer, combine them into a single full scan 1903 bundle = new Bundle(); 1904 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1905 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1906 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1907 mBufferedScanMsg.clear(); 1908 mBufferedScanMsg.add(msg); 1909 } 1910 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1911 } else { 1912 // mIsScanOngoing and mIsFullScanOngoing 1913 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1914 } 1915 } 1916 1917 1918 /** 1919 * return true iff scan request is accepted 1920 */ 1921 private boolean startScanNative(int type, String freqs) { 1922 if (mWifiNative.scan(type, freqs)) { 1923 mIsScanOngoing = true; 1924 mIsFullScanOngoing = (freqs == null); 1925 lastScanFreqs = freqs; 1926 return true; 1927 } 1928 return false; 1929 } 1930 1931 /** 1932 * TODO: doc 1933 */ 1934 public void setSupplicantRunning(boolean enable) { 1935 if (enable) { 1936 sendMessage(CMD_START_SUPPLICANT); 1937 } else { 1938 sendMessage(CMD_STOP_SUPPLICANT); 1939 } 1940 } 1941 1942 /** 1943 * TODO: doc 1944 */ 1945 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1946 if (enable) { 1947 sendMessage(CMD_START_AP, wifiConfig); 1948 } else { 1949 sendMessage(CMD_STOP_AP); 1950 } 1951 } 1952 1953 public void setWifiApConfiguration(WifiConfiguration config) { 1954 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1955 } 1956 1957 public WifiConfiguration syncGetWifiApConfiguration() { 1958 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1959 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1960 resultMsg.recycle(); 1961 return ret; 1962 } 1963 1964 /** 1965 * TODO: doc 1966 */ 1967 public int syncGetWifiState() { 1968 return mWifiState.get(); 1969 } 1970 1971 /** 1972 * TODO: doc 1973 */ 1974 public String syncGetWifiStateByName() { 1975 switch (mWifiState.get()) { 1976 case WIFI_STATE_DISABLING: 1977 return "disabling"; 1978 case WIFI_STATE_DISABLED: 1979 return "disabled"; 1980 case WIFI_STATE_ENABLING: 1981 return "enabling"; 1982 case WIFI_STATE_ENABLED: 1983 return "enabled"; 1984 case WIFI_STATE_UNKNOWN: 1985 return "unknown state"; 1986 default: 1987 return "[invalid state]"; 1988 } 1989 } 1990 1991 /** 1992 * TODO: doc 1993 */ 1994 public int syncGetWifiApState() { 1995 return mWifiApState.get(); 1996 } 1997 1998 /** 1999 * TODO: doc 2000 */ 2001 public String syncGetWifiApStateByName() { 2002 switch (mWifiApState.get()) { 2003 case WIFI_AP_STATE_DISABLING: 2004 return "disabling"; 2005 case WIFI_AP_STATE_DISABLED: 2006 return "disabled"; 2007 case WIFI_AP_STATE_ENABLING: 2008 return "enabling"; 2009 case WIFI_AP_STATE_ENABLED: 2010 return "enabled"; 2011 case WIFI_AP_STATE_FAILED: 2012 return "failed"; 2013 default: 2014 return "[invalid state]"; 2015 } 2016 } 2017 2018 /** 2019 * Get status information for the current connection, if any. 2020 * 2021 * @return a {@link WifiInfo} object containing information about the current connection 2022 */ 2023 public WifiInfo syncRequestConnectionInfo() { 2024 return getWiFiInfoForUid(Binder.getCallingUid()); 2025 } 2026 2027 public DhcpResults syncGetDhcpResults() { 2028 synchronized (mDhcpResultsLock) { 2029 return new DhcpResults(mDhcpResults); 2030 } 2031 } 2032 2033 /** 2034 * TODO: doc 2035 */ 2036 public void setDriverStart(boolean enable) { 2037 if (enable) { 2038 sendMessage(CMD_START_DRIVER); 2039 } else { 2040 sendMessage(CMD_STOP_DRIVER); 2041 } 2042 } 2043 2044 /** 2045 * TODO: doc 2046 */ 2047 public void setOperationalMode(int mode) { 2048 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2049 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2050 } 2051 2052 /** 2053 * TODO: doc 2054 */ 2055 public List<ScanResult> syncGetScanResultsList() { 2056 synchronized (mScanResultCache) { 2057 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2058 for (ScanDetail result : mScanResults) { 2059 scanList.add(new ScanResult(result.getScanResult())); 2060 } 2061 return scanList; 2062 } 2063 } 2064 2065 public void disableEphemeralNetwork(String SSID) { 2066 if (SSID != null) { 2067 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2068 } 2069 } 2070 2071 /** 2072 * Get unsynchronized pointer to scan result list 2073 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2074 */ 2075 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2076 return mScanResults; 2077 } 2078 2079 /** 2080 * Disconnect from Access Point 2081 */ 2082 public void disconnectCommand() { 2083 sendMessage(CMD_DISCONNECT); 2084 } 2085 2086 public void disconnectCommand(int uid, int reason) { 2087 sendMessage(CMD_DISCONNECT, uid, reason); 2088 } 2089 2090 /** 2091 * Initiate a reconnection to AP 2092 */ 2093 public void reconnectCommand() { 2094 sendMessage(CMD_RECONNECT); 2095 } 2096 2097 /** 2098 * Initiate a re-association to AP 2099 */ 2100 public void reassociateCommand() { 2101 sendMessage(CMD_REASSOCIATE); 2102 } 2103 2104 /** 2105 * Reload networks and then reconnect; helps load correct data for TLS networks 2106 */ 2107 2108 public void reloadTlsNetworksAndReconnect() { 2109 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2110 } 2111 2112 /** 2113 * Add a network synchronously 2114 * 2115 * @return network id of the new network 2116 */ 2117 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2118 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2119 int result = resultMsg.arg1; 2120 resultMsg.recycle(); 2121 return result; 2122 } 2123 2124 /** 2125 * Get configured networks synchronously 2126 * 2127 * @param channel 2128 * @return 2129 */ 2130 2131 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2132 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2133 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2134 resultMsg.recycle(); 2135 return result; 2136 } 2137 2138 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2139 Message resultMsg = channel.sendMessageSynchronously( 2140 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2141 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2142 resultMsg.recycle(); 2143 return result; 2144 } 2145 2146 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2147 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2148 return (WifiConfiguration) resultMsg.obj; 2149 } 2150 2151 /** 2152 * Get connection statistics synchronously 2153 * 2154 * @param channel 2155 * @return 2156 */ 2157 2158 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2159 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2160 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2161 resultMsg.recycle(); 2162 return result; 2163 } 2164 2165 /** 2166 * Get adaptors synchronously 2167 */ 2168 2169 public int syncGetSupportedFeatures(AsyncChannel channel) { 2170 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2171 int supportedFeatureSet = resultMsg.arg1; 2172 resultMsg.recycle(); 2173 return supportedFeatureSet; 2174 } 2175 2176 /** 2177 * Get link layers stats for adapter synchronously 2178 */ 2179 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2180 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2181 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2182 resultMsg.recycle(); 2183 return result; 2184 } 2185 2186 /** 2187 * Delete a network 2188 * 2189 * @param networkId id of the network to be removed 2190 */ 2191 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2192 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2193 boolean result = (resultMsg.arg1 != FAILURE); 2194 resultMsg.recycle(); 2195 return result; 2196 } 2197 2198 /** 2199 * Enable a network 2200 * 2201 * @param netId network id of the network 2202 * @param disableOthers true, if all other networks have to be disabled 2203 * @return {@code true} if the operation succeeds, {@code false} otherwise 2204 */ 2205 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2206 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2207 disableOthers ? 1 : 0); 2208 boolean result = (resultMsg.arg1 != FAILURE); 2209 resultMsg.recycle(); 2210 return result; 2211 } 2212 2213 /** 2214 * Disable a network 2215 * 2216 * @param netId network id of the network 2217 * @return {@code true} if the operation succeeds, {@code false} otherwise 2218 */ 2219 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2220 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2221 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2222 resultMsg.recycle(); 2223 return result; 2224 } 2225 2226 /** 2227 * Retrieves a WPS-NFC configuration token for the specified network 2228 * 2229 * @return a hex string representation of the WPS-NFC configuration token 2230 */ 2231 public String syncGetWpsNfcConfigurationToken(int netId) { 2232 return mWifiNative.getNfcWpsConfigurationToken(netId); 2233 } 2234 2235 void enableBackgroundScan(boolean enable) { 2236 if (enable) { 2237 mWifiConfigStore.enableAllNetworks(); 2238 } 2239 boolean ret = mWifiNative.enableBackgroundScan(enable); 2240 if (ret) { 2241 mLegacyPnoEnabled = enable; 2242 } else { 2243 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2244 } 2245 } 2246 2247 /** 2248 * Blacklist a BSSID. This will avoid the AP if there are 2249 * alternate APs to connect 2250 * 2251 * @param bssid BSSID of the network 2252 */ 2253 public void addToBlacklist(String bssid) { 2254 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2255 } 2256 2257 /** 2258 * Clear the blacklist list 2259 */ 2260 public void clearBlacklist() { 2261 sendMessage(CMD_CLEAR_BLACKLIST); 2262 } 2263 2264 public void enableRssiPolling(boolean enabled) { 2265 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2266 } 2267 2268 public void enableAllNetworks() { 2269 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2270 } 2271 2272 /** 2273 * Start filtering Multicast v4 packets 2274 */ 2275 public void startFilteringMulticastV4Packets() { 2276 mFilteringMulticastV4Packets.set(true); 2277 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2278 } 2279 2280 /** 2281 * Stop filtering Multicast v4 packets 2282 */ 2283 public void stopFilteringMulticastV4Packets() { 2284 mFilteringMulticastV4Packets.set(false); 2285 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2286 } 2287 2288 /** 2289 * Start filtering Multicast v4 packets 2290 */ 2291 public void startFilteringMulticastV6Packets() { 2292 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2293 } 2294 2295 /** 2296 * Stop filtering Multicast v4 packets 2297 */ 2298 public void stopFilteringMulticastV6Packets() { 2299 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2300 } 2301 2302 /** 2303 * Set high performance mode of operation. 2304 * Enabling would set active power mode and disable suspend optimizations; 2305 * disabling would set auto power mode and enable suspend optimizations 2306 * 2307 * @param enable true if enable, false otherwise 2308 */ 2309 public void setHighPerfModeEnabled(boolean enable) { 2310 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2311 } 2312 2313 /** 2314 * Set the country code 2315 * 2316 * @param countryCode following ISO 3166 format 2317 * @param persist {@code true} if the setting should be remembered. 2318 */ 2319 public synchronized void setCountryCode(String countryCode, boolean persist) { 2320 // If it's a good country code, apply after the current 2321 // wifi connection is terminated; ignore resetting of code 2322 // for now (it is unclear what the chipset should do when 2323 // country code is reset) 2324 2325 if (TextUtils.isEmpty(countryCode)) { 2326 log("Ignoring resetting of country code"); 2327 } else { 2328 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2329 // else only when the new country code is different from the current one to set 2330 int countryCodeSequence = mCountryCodeSequence.get(); 2331 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2332 2333 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2334 mSetCountryCode = countryCode; 2335 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2336 countryCode); 2337 } 2338 2339 if (persist) { 2340 Settings.Global.putString(mContext.getContentResolver(), 2341 Settings.Global.WIFI_COUNTRY_CODE, 2342 countryCode); 2343 } 2344 } 2345 } 2346 2347 /** 2348 * Get Network object of current wifi network 2349 * @return Network object of current wifi network 2350 */ 2351 public Network getCurrentNetwork() { 2352 if (mNetworkAgent != null) { 2353 return new Network(mNetworkAgent.netId); 2354 } else { 2355 return null; 2356 } 2357 } 2358 2359 /** 2360 * Get the country code 2361 * 2362 * @param countryCode following ISO 3166 format 2363 */ 2364 public String getCountryCode() { 2365 return mSetCountryCode; 2366 } 2367 2368 2369 /** 2370 * Set the operational frequency band 2371 * 2372 * @param band 2373 * @param persist {@code true} if the setting should be remembered. 2374 */ 2375 public void setFrequencyBand(int band, boolean persist) { 2376 if (persist) { 2377 Settings.Global.putInt(mContext.getContentResolver(), 2378 Settings.Global.WIFI_FREQUENCY_BAND, 2379 band); 2380 } 2381 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2382 } 2383 2384 /** 2385 * Enable TDLS for a specific MAC address 2386 */ 2387 public void enableTdls(String remoteMacAddress, boolean enable) { 2388 int enabler = enable ? 1 : 0; 2389 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2390 } 2391 2392 /** 2393 * Returns the operational frequency band 2394 */ 2395 public int getFrequencyBand() { 2396 return mFrequencyBand.get(); 2397 } 2398 2399 /** 2400 * Returns the wifi configuration file 2401 */ 2402 public String getConfigFile() { 2403 return mWifiConfigStore.getConfigFile(); 2404 } 2405 2406 /** 2407 * Send a message indicating bluetooth adapter connection state changed 2408 */ 2409 public void sendBluetoothAdapterStateChange(int state) { 2410 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2411 } 2412 2413 /** 2414 * Send a message indicating a package has been uninstalled. 2415 */ 2416 public void removeAppConfigs(String packageName, int uid) { 2417 // Build partial AppInfo manually - package may not exist in database any more 2418 ApplicationInfo ai = new ApplicationInfo(); 2419 ai.packageName = packageName; 2420 ai.uid = uid; 2421 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2422 } 2423 2424 /** 2425 * Send a message indicating a user has been removed. 2426 */ 2427 public void removeUserConfigs(int userId) { 2428 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2429 } 2430 2431 /** 2432 * Save configuration on supplicant 2433 * 2434 * @return {@code true} if the operation succeeds, {@code false} otherwise 2435 * <p/> 2436 * TODO: deprecate this 2437 */ 2438 public boolean syncSaveConfig(AsyncChannel channel) { 2439 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2440 boolean result = (resultMsg.arg1 != FAILURE); 2441 resultMsg.recycle(); 2442 return result; 2443 } 2444 2445 public void updateBatteryWorkSource(WorkSource newSource) { 2446 synchronized (mRunningWifiUids) { 2447 try { 2448 if (newSource != null) { 2449 mRunningWifiUids.set(newSource); 2450 } 2451 if (mIsRunning) { 2452 if (mReportedRunning) { 2453 // If the work source has changed since last time, need 2454 // to remove old work from battery stats. 2455 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2456 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2457 mRunningWifiUids); 2458 mLastRunningWifiUids.set(mRunningWifiUids); 2459 } 2460 } else { 2461 // Now being started, report it. 2462 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2463 mLastRunningWifiUids.set(mRunningWifiUids); 2464 mReportedRunning = true; 2465 } 2466 } else { 2467 if (mReportedRunning) { 2468 // Last reported we were running, time to stop. 2469 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2470 mLastRunningWifiUids.clear(); 2471 mReportedRunning = false; 2472 } 2473 } 2474 mWakeLock.setWorkSource(newSource); 2475 } catch (RemoteException ignore) { 2476 } 2477 } 2478 } 2479 2480 @Override 2481 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2482 super.dump(fd, pw, args); 2483 mSupplicantStateTracker.dump(fd, pw, args); 2484 pw.println("mLinkProperties " + mLinkProperties); 2485 pw.println("mWifiInfo " + mWifiInfo); 2486 pw.println("mDhcpResults " + mDhcpResults); 2487 pw.println("mNetworkInfo " + mNetworkInfo); 2488 pw.println("mLastSignalLevel " + mLastSignalLevel); 2489 pw.println("mLastBssid " + mLastBssid); 2490 pw.println("mLastNetworkId " + mLastNetworkId); 2491 pw.println("mOperationalMode " + mOperationalMode); 2492 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2493 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2494 pw.println("Supplicant status " + mWifiNative.status(true)); 2495 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2496 pw.println("mSetCountryCode " + mSetCountryCode); 2497 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2498 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2499 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2500 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2501 pw.println("SSID whitelist :" ); 2502 for (int i=0; i < mWhiteListedSsids.length; i++) { 2503 pw.println(" " + mWhiteListedSsids[i]); 2504 } 2505 } 2506 mNetworkFactory.dump(fd, pw, args); 2507 mUntrustedNetworkFactory.dump(fd, pw, args); 2508 pw.println(); 2509 mWifiConfigStore.dump(fd, pw, args); 2510 pw.println(); 2511 mWifiLogger.dump(fd, pw, args); 2512 } 2513 2514 /** 2515 * ****************************************************** 2516 * Internal private functions 2517 * ****************************************************** 2518 */ 2519 2520 private void logStateAndMessage(Message message, String state) { 2521 messageHandlingStatus = 0; 2522 if (mLogMessages) { 2523 //long now = SystemClock.elapsedRealtimeNanos(); 2524 //String ts = String.format("[%,d us]", now/1000); 2525 2526 loge(" " + state + " " + getLogRecString(message)); 2527 } 2528 } 2529 2530 /** 2531 * helper, prints the milli time since boot wi and w/o suspended time 2532 */ 2533 String printTime() { 2534 StringBuilder sb = new StringBuilder(); 2535 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2536 sb.append("/").append(SystemClock.elapsedRealtime()); 2537 return sb.toString(); 2538 } 2539 2540 /** 2541 * Return the additional string to be logged by LogRec, default 2542 * 2543 * @param msg that was processed 2544 * @return information to be logged as a String 2545 */ 2546 protected String getLogRecString(Message msg) { 2547 WifiConfiguration config; 2548 Long now; 2549 String report; 2550 String key; 2551 StringBuilder sb = new StringBuilder(); 2552 if (mScreenOn) { 2553 sb.append("!"); 2554 } 2555 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2556 sb.append("(").append(messageHandlingStatus).append(")"); 2557 } 2558 sb.append(smToString(msg)); 2559 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2560 sb.append(" uid=" + msg.sendingUid); 2561 } 2562 switch (msg.what) { 2563 case CMD_STARTED_GSCAN_DBG: 2564 case CMD_STARTED_PNO_DBG: 2565 sb.append(" "); 2566 sb.append(Integer.toString(msg.arg1)); 2567 sb.append(" "); 2568 sb.append(Integer.toString(msg.arg2)); 2569 if (msg.obj != null) { 2570 sb.append(" " + (String)msg.obj); 2571 } 2572 break; 2573 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2574 sb.append(" "); 2575 sb.append(Integer.toString(msg.arg1)); 2576 sb.append(" "); 2577 sb.append(Integer.toString(msg.arg2)); 2578 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2579 if (msg.obj != null) { 2580 sb.append(" " + (String)msg.obj); 2581 } 2582 break; 2583 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2584 sb.append(" "); 2585 sb.append(Integer.toString(msg.arg1)); 2586 sb.append(" "); 2587 sb.append(Integer.toString(msg.arg2)); 2588 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2589 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2590 sb.append(" autojoinAllowed="); 2591 sb.append(mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()); 2592 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2593 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2594 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2595 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2596 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2597 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2598 break; 2599 case CMD_PNO_NETWORK_FOUND: 2600 sb.append(" "); 2601 sb.append(Integer.toString(msg.arg1)); 2602 sb.append(" "); 2603 sb.append(Integer.toString(msg.arg2)); 2604 if (msg.obj != null) { 2605 ScanResult[] results = (ScanResult[])msg.obj; 2606 for (int i = 0; i < results.length; i++) { 2607 sb.append(" ").append(results[i].SSID).append(" "); 2608 sb.append(results[i].frequency); 2609 sb.append(" ").append(results[i].level); 2610 } 2611 } 2612 break; 2613 case CMD_START_SCAN: 2614 now = System.currentTimeMillis(); 2615 sb.append(" "); 2616 sb.append(Integer.toString(msg.arg1)); 2617 sb.append(" "); 2618 sb.append(Integer.toString(msg.arg2)); 2619 sb.append(" ic="); 2620 sb.append(Integer.toString(sScanAlarmIntentCount)); 2621 if (msg.obj != null) { 2622 Bundle bundle = (Bundle) msg.obj; 2623 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2624 if (request != 0) { 2625 sb.append(" proc(ms):").append(now - request); 2626 } 2627 } 2628 if (mIsScanOngoing) sb.append(" onGoing"); 2629 if (mIsFullScanOngoing) sb.append(" full"); 2630 if (lastStartScanTimeStamp != 0) { 2631 sb.append(" started:").append(lastStartScanTimeStamp); 2632 sb.append(",").append(now - lastStartScanTimeStamp); 2633 } 2634 if (lastScanDuration != 0) { 2635 sb.append(" dur:").append(lastScanDuration); 2636 } 2637 sb.append(" cnt=").append(mDelayedScanCounter); 2638 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2639 sb.append(" f=").append(mWifiInfo.getFrequency()); 2640 sb.append(" sc=").append(mWifiInfo.score); 2641 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2642 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2643 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2644 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2645 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2646 if (lastScanFreqs != null) { 2647 sb.append(" list=").append(lastScanFreqs); 2648 } else { 2649 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2650 } 2651 report = reportOnTime(); 2652 if (report != null) { 2653 sb.append(" ").append(report); 2654 } 2655 break; 2656 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2657 sb.append(" "); 2658 sb.append(Integer.toString(msg.arg1)); 2659 sb.append(" "); 2660 sb.append(Integer.toString(msg.arg2)); 2661 sb.append(printTime()); 2662 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2663 if (stateChangeResult != null) { 2664 sb.append(stateChangeResult.toString()); 2665 } 2666 break; 2667 case WifiManager.SAVE_NETWORK: 2668 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2669 sb.append(" "); 2670 sb.append(Integer.toString(msg.arg1)); 2671 sb.append(" "); 2672 sb.append(Integer.toString(msg.arg2)); 2673 if (lastSavedConfigurationAttempt != null) { 2674 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2675 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2676 if (lastSavedConfigurationAttempt.hiddenSSID) { 2677 sb.append(" hidden"); 2678 } 2679 if (lastSavedConfigurationAttempt.preSharedKey != null 2680 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2681 sb.append(" hasPSK"); 2682 } 2683 if (lastSavedConfigurationAttempt.ephemeral) { 2684 sb.append(" ephemeral"); 2685 } 2686 if (lastSavedConfigurationAttempt.selfAdded) { 2687 sb.append(" selfAdded"); 2688 } 2689 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2690 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2691 } 2692 break; 2693 case WifiManager.FORGET_NETWORK: 2694 sb.append(" "); 2695 sb.append(Integer.toString(msg.arg1)); 2696 sb.append(" "); 2697 sb.append(Integer.toString(msg.arg2)); 2698 if (lastForgetConfigurationAttempt != null) { 2699 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2700 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2701 if (lastForgetConfigurationAttempt.hiddenSSID) { 2702 sb.append(" hidden"); 2703 } 2704 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2705 sb.append(" hasPSK"); 2706 } 2707 if (lastForgetConfigurationAttempt.ephemeral) { 2708 sb.append(" ephemeral"); 2709 } 2710 if (lastForgetConfigurationAttempt.selfAdded) { 2711 sb.append(" selfAdded"); 2712 } 2713 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2714 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2715 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2716 } 2717 break; 2718 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2719 sb.append(" "); 2720 sb.append(Integer.toString(msg.arg1)); 2721 sb.append(" "); 2722 sb.append(Integer.toString(msg.arg2)); 2723 String bssid = (String) msg.obj; 2724 if (bssid != null && bssid.length() > 0) { 2725 sb.append(" "); 2726 sb.append(bssid); 2727 } 2728 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2729 sb.append(printTime()); 2730 break; 2731 case WifiMonitor.SCAN_RESULTS_EVENT: 2732 sb.append(" "); 2733 sb.append(Integer.toString(msg.arg1)); 2734 sb.append(" "); 2735 sb.append(Integer.toString(msg.arg2)); 2736 if (mScanResults != null) { 2737 sb.append(" found="); 2738 sb.append(mScanResults.size()); 2739 } 2740 sb.append(" known=").append(mNumScanResultsKnown); 2741 sb.append(" got=").append(mNumScanResultsReturned); 2742 if (lastScanDuration != 0) { 2743 sb.append(" dur:").append(lastScanDuration); 2744 } 2745 if (mOnTime != 0) { 2746 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2747 sb.append(",").append(mOnTime); 2748 } 2749 if (mTxTime != 0) { 2750 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2751 sb.append(",").append(mTxTime); 2752 } 2753 if (mRxTime != 0) { 2754 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2755 sb.append(",").append(mRxTime); 2756 } 2757 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2758 sb.append(String.format(" con=%d", mConnectionRequests)); 2759 key = mWifiConfigStore.getLastSelectedConfiguration(); 2760 if (key != null) { 2761 sb.append(" last=").append(key); 2762 } 2763 break; 2764 case WifiMonitor.SCAN_FAILED_EVENT: 2765 break; 2766 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2767 sb.append(" "); 2768 sb.append(Integer.toString(msg.arg1)); 2769 sb.append(" "); 2770 sb.append(Integer.toString(msg.arg2)); 2771 sb.append(" ").append(mLastBssid); 2772 sb.append(" nid=").append(mLastNetworkId); 2773 config = getCurrentWifiConfiguration(); 2774 if (config != null) { 2775 sb.append(" ").append(config.configKey()); 2776 } 2777 sb.append(printTime()); 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 sb.append(printTime()); 2797 break; 2798 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2799 if (msg.obj != null) { 2800 sb.append(" ").append((String) msg.obj); 2801 } 2802 sb.append(" nid=").append(msg.arg1); 2803 sb.append(" reason=").append(msg.arg2); 2804 if (mLastBssid != null) { 2805 sb.append(" lastbssid=").append(mLastBssid); 2806 } 2807 if (mWifiInfo.getFrequency() != -1) { 2808 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2809 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2810 } 2811 if (linkDebouncing) { 2812 sb.append(" debounce"); 2813 } 2814 sb.append(printTime()); 2815 break; 2816 case WifiMonitor.SSID_TEMP_DISABLED: 2817 case WifiMonitor.SSID_REENABLED: 2818 sb.append(" nid=").append(msg.arg1); 2819 if (msg.obj != null) { 2820 sb.append(" ").append((String) msg.obj); 2821 } 2822 config = getCurrentWifiConfiguration(); 2823 if (config != null) { 2824 sb.append(" cur=").append(config.configKey()); 2825 sb.append(" ajst=").append(config.autoJoinStatus); 2826 if (config.selfAdded) { 2827 sb.append(" selfAdded"); 2828 } 2829 if (config.status != 0) { 2830 sb.append(" st=").append(config.status); 2831 sb.append(" rs=").append(config.disableReason); 2832 } 2833 if (config.lastConnected != 0) { 2834 now = System.currentTimeMillis(); 2835 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2836 } 2837 if (mLastBssid != null) { 2838 sb.append(" lastbssid=").append(mLastBssid); 2839 } 2840 if (mWifiInfo.getFrequency() != -1) { 2841 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2842 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2843 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2844 } 2845 } 2846 sb.append(printTime()); 2847 break; 2848 case CMD_RSSI_POLL: 2849 case CMD_UNWANTED_NETWORK: 2850 case WifiManager.RSSI_PKTCNT_FETCH: 2851 sb.append(" "); 2852 sb.append(Integer.toString(msg.arg1)); 2853 sb.append(" "); 2854 sb.append(Integer.toString(msg.arg2)); 2855 if (mWifiInfo.getSSID() != null) 2856 if (mWifiInfo.getSSID() != null) 2857 sb.append(" ").append(mWifiInfo.getSSID()); 2858 if (mWifiInfo.getBSSID() != null) 2859 sb.append(" ").append(mWifiInfo.getBSSID()); 2860 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2861 sb.append(" f=").append(mWifiInfo.getFrequency()); 2862 sb.append(" sc=").append(mWifiInfo.score); 2863 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2864 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2865 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2866 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2867 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2868 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2869 report = reportOnTime(); 2870 if (report != null) { 2871 sb.append(" ").append(report); 2872 } 2873 if (wifiScoringReport != null) { 2874 sb.append(wifiScoringReport); 2875 } 2876 if (mConnectedModeGScanOffloadStarted) { 2877 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2878 } else { 2879 sb.append(" offload-stopped"); 2880 } 2881 break; 2882 case CMD_AUTO_CONNECT: 2883 case WifiManager.CONNECT_NETWORK: 2884 sb.append(" "); 2885 sb.append(Integer.toString(msg.arg1)); 2886 sb.append(" "); 2887 sb.append(Integer.toString(msg.arg2)); 2888 config = (WifiConfiguration) msg.obj; 2889 if (config != null) { 2890 sb.append(" ").append(config.configKey()); 2891 if (config.visibility != null) { 2892 sb.append(" ").append(config.visibility.toString()); 2893 } 2894 } 2895 if (mTargetRoamBSSID != null) { 2896 sb.append(" ").append(mTargetRoamBSSID); 2897 } 2898 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2899 sb.append(printTime()); 2900 config = getCurrentWifiConfiguration(); 2901 if (config != null) { 2902 sb.append(config.configKey()); 2903 if (config.visibility != null) { 2904 sb.append(" ").append(config.visibility.toString()); 2905 } 2906 } 2907 break; 2908 case CMD_AUTO_ROAM: 2909 sb.append(" "); 2910 sb.append(Integer.toString(msg.arg1)); 2911 sb.append(" "); 2912 sb.append(Integer.toString(msg.arg2)); 2913 ScanResult result = (ScanResult) msg.obj; 2914 if (result != null) { 2915 now = System.currentTimeMillis(); 2916 sb.append(" bssid=").append(result.BSSID); 2917 sb.append(" rssi=").append(result.level); 2918 sb.append(" freq=").append(result.frequency); 2919 if (result.seen > 0 && result.seen < now) { 2920 sb.append(" seen=").append(now - result.seen); 2921 } else { 2922 // Somehow the timestamp for this scan result is inconsistent 2923 sb.append(" !seen=").append(result.seen); 2924 } 2925 } 2926 if (mTargetRoamBSSID != null) { 2927 sb.append(" ").append(mTargetRoamBSSID); 2928 } 2929 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2930 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2931 sb.append(printTime()); 2932 break; 2933 case CMD_ADD_OR_UPDATE_NETWORK: 2934 sb.append(" "); 2935 sb.append(Integer.toString(msg.arg1)); 2936 sb.append(" "); 2937 sb.append(Integer.toString(msg.arg2)); 2938 if (msg.obj != null) { 2939 config = (WifiConfiguration) msg.obj; 2940 sb.append(" ").append(config.configKey()); 2941 sb.append(" prio=").append(config.priority); 2942 sb.append(" status=").append(config.status); 2943 if (config.BSSID != null) { 2944 sb.append(" ").append(config.BSSID); 2945 } 2946 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2947 if (curConfig != null) { 2948 if (curConfig.configKey().equals(config.configKey())) { 2949 sb.append(" is current"); 2950 } else { 2951 sb.append(" current=").append(curConfig.configKey()); 2952 sb.append(" prio=").append(curConfig.priority); 2953 sb.append(" status=").append(curConfig.status); 2954 } 2955 } 2956 } 2957 break; 2958 case WifiManager.DISABLE_NETWORK: 2959 case CMD_ENABLE_NETWORK: 2960 sb.append(" "); 2961 sb.append(Integer.toString(msg.arg1)); 2962 sb.append(" "); 2963 sb.append(Integer.toString(msg.arg2)); 2964 key = mWifiConfigStore.getLastSelectedConfiguration(); 2965 if (key != null) { 2966 sb.append(" last=").append(key); 2967 } 2968 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2969 if (config != null && (key == null || !config.configKey().equals(key))) { 2970 sb.append(" target=").append(key); 2971 } 2972 break; 2973 case CMD_GET_CONFIGURED_NETWORKS: 2974 sb.append(" "); 2975 sb.append(Integer.toString(msg.arg1)); 2976 sb.append(" "); 2977 sb.append(Integer.toString(msg.arg2)); 2978 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2979 break; 2980 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2981 sb.append(" "); 2982 sb.append(Integer.toString(msg.arg1)); 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg2)); 2985 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2986 sb.append(",").append(mWifiInfo.txBad); 2987 sb.append(",").append(mWifiInfo.txRetries); 2988 break; 2989 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2990 sb.append(" "); 2991 sb.append(Integer.toString(msg.arg1)); 2992 sb.append(" "); 2993 sb.append(Integer.toString(msg.arg2)); 2994 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2995 sb.append(" OK "); 2996 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2997 sb.append(" FAIL "); 2998 } 2999 if (mLinkProperties != null) { 3000 if (mLinkProperties.hasIPv4Address()) { 3001 sb.append(" v4"); 3002 } 3003 if (mLinkProperties.hasGlobalIPv6Address()) { 3004 sb.append(" v6"); 3005 } 3006 if (mLinkProperties.hasIPv4DefaultRoute()) { 3007 sb.append(" v4r"); 3008 } 3009 if (mLinkProperties.hasIPv6DefaultRoute()) { 3010 sb.append(" v6r"); 3011 } 3012 if (mLinkProperties.hasIPv4DnsServer()) { 3013 sb.append(" v4dns"); 3014 } 3015 if (mLinkProperties.hasIPv6DnsServer()) { 3016 sb.append(" v6dns"); 3017 } 3018 } 3019 break; 3020 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3021 sb.append(" "); 3022 sb.append(Integer.toString(msg.arg1)); 3023 sb.append(" "); 3024 sb.append(Integer.toString(msg.arg2)); 3025 if (msg.obj != null) { 3026 NetworkInfo info = (NetworkInfo) msg.obj; 3027 NetworkInfo.State state = info.getState(); 3028 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3029 if (state != null) { 3030 sb.append(" st=").append(state); 3031 } 3032 if (detailedState != null) { 3033 sb.append("/").append(detailedState); 3034 } 3035 } 3036 break; 3037 case CMD_IP_CONFIGURATION_LOST: 3038 int count = -1; 3039 WifiConfiguration c = getCurrentWifiConfiguration(); 3040 if (c != null) count = c.numIpConfigFailures; 3041 sb.append(" "); 3042 sb.append(Integer.toString(msg.arg1)); 3043 sb.append(" "); 3044 sb.append(Integer.toString(msg.arg2)); 3045 sb.append(" failures: "); 3046 sb.append(Integer.toString(count)); 3047 sb.append("/"); 3048 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3049 if (mWifiInfo.getBSSID() != null) { 3050 sb.append(" ").append(mWifiInfo.getBSSID()); 3051 } 3052 if (c != null) { 3053 ScanDetailCache scanDetailCache = 3054 mWifiConfigStore.getScanDetailCache(c); 3055 if (scanDetailCache != null) { 3056 for (ScanDetail sd : scanDetailCache.values()) { 3057 ScanResult r = sd.getScanResult(); 3058 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3059 sb.append(" ipfail=").append(r.numIpConfigFailures); 3060 sb.append(",st=").append(r.autoJoinStatus); 3061 } 3062 } 3063 } 3064 sb.append(" -> ajst=").append(c.autoJoinStatus); 3065 sb.append(" ").append(c.disableReason); 3066 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3067 sb.append(",").append(mWifiInfo.txBad); 3068 sb.append(",").append(mWifiInfo.txRetries); 3069 } 3070 sb.append(printTime()); 3071 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3072 break; 3073 case CMD_UPDATE_LINKPROPERTIES: 3074 sb.append(" "); 3075 sb.append(Integer.toString(msg.arg1)); 3076 sb.append(" "); 3077 sb.append(Integer.toString(msg.arg2)); 3078 if (mLinkProperties != null) { 3079 if (mLinkProperties.hasIPv4Address()) { 3080 sb.append(" v4"); 3081 } 3082 if (mLinkProperties.hasGlobalIPv6Address()) { 3083 sb.append(" v6"); 3084 } 3085 if (mLinkProperties.hasIPv4DefaultRoute()) { 3086 sb.append(" v4r"); 3087 } 3088 if (mLinkProperties.hasIPv6DefaultRoute()) { 3089 sb.append(" v6r"); 3090 } 3091 if (mLinkProperties.hasIPv4DnsServer()) { 3092 sb.append(" v4dns"); 3093 } 3094 if (mLinkProperties.hasIPv6DnsServer()) { 3095 sb.append(" v6dns"); 3096 } 3097 } 3098 break; 3099 case CMD_IP_REACHABILITY_LOST: 3100 if (msg.obj != null) { 3101 sb.append(" ").append((String) msg.obj); 3102 } 3103 break; 3104 case CMD_SET_COUNTRY_CODE: 3105 sb.append(" "); 3106 sb.append(Integer.toString(msg.arg1)); 3107 sb.append(" "); 3108 sb.append(Integer.toString(msg.arg2)); 3109 if (msg.obj != null) { 3110 sb.append(" ").append((String) msg.obj); 3111 } 3112 break; 3113 case CMD_ROAM_WATCHDOG_TIMER: 3114 sb.append(" "); 3115 sb.append(Integer.toString(msg.arg1)); 3116 sb.append(" "); 3117 sb.append(Integer.toString(msg.arg2)); 3118 sb.append(" cur=").append(roamWatchdogCount); 3119 break; 3120 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3121 sb.append(" "); 3122 sb.append(Integer.toString(msg.arg1)); 3123 sb.append(" "); 3124 sb.append(Integer.toString(msg.arg2)); 3125 sb.append(" cur=").append(disconnectingWatchdogCount); 3126 break; 3127 default: 3128 sb.append(" "); 3129 sb.append(Integer.toString(msg.arg1)); 3130 sb.append(" "); 3131 sb.append(Integer.toString(msg.arg2)); 3132 break; 3133 } 3134 3135 return sb.toString(); 3136 } 3137 3138 private void stopPnoOffload() { 3139 3140 // clear the PNO list 3141 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3142 Log.e(TAG, "Failed to stop pno"); 3143 } 3144 3145 } 3146 3147 3148 private boolean configureSsidWhiteList() { 3149 3150 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3151 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3152 return true; 3153 } 3154 3155 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3156 loge("configureSsidWhiteList couldnt program SSID list, size " 3157 + mWhiteListedSsids.length); 3158 return false; 3159 } 3160 3161 loge("configureSsidWhiteList success"); 3162 return true; 3163 } 3164 3165 // In associated more, lazy roam will be looking for 5GHz roam candidate 3166 private boolean configureLazyRoam() { 3167 boolean status; 3168 if (!useHalBasedAutoJoinOffload()) return false; 3169 3170 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3171 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3172 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3173 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3174 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3175 params.A_band_max_boost = 65; 3176 params.lazy_roam_hysteresis = 25; 3177 params.alert_roam_rssi_trigger = -75; 3178 3179 if (DBG) { 3180 Log.e(TAG, "configureLazyRoam " + params.toString()); 3181 } 3182 3183 if (!WifiNative.setLazyRoam(true, params)) { 3184 3185 Log.e(TAG, "configureLazyRoam couldnt program params"); 3186 3187 return false; 3188 } 3189 if (DBG) { 3190 Log.e(TAG, "configureLazyRoam success"); 3191 } 3192 return true; 3193 } 3194 3195 // In associated more, lazy roam will be looking for 5GHz roam candidate 3196 private boolean stopLazyRoam() { 3197 boolean status; 3198 if (!useHalBasedAutoJoinOffload()) return false; 3199 if (DBG) { 3200 Log.e(TAG, "stopLazyRoam"); 3201 } 3202 return WifiNative.setLazyRoam(false, null); 3203 } 3204 3205 private boolean startGScanConnectedModeOffload(String reason) { 3206 if (DBG) { 3207 if (reason == null) { 3208 reason = ""; 3209 } 3210 loge("startGScanConnectedModeOffload " + reason); 3211 } 3212 stopGScan("startGScanConnectedModeOffload " + reason); 3213 if (!mScreenOn) return false; 3214 3215 if (USE_PAUSE_SCANS) { 3216 mWifiNative.pauseScan(); 3217 } 3218 mPnoEnabled = configurePno(); 3219 if (mPnoEnabled == false) { 3220 if (USE_PAUSE_SCANS) { 3221 mWifiNative.restartScan(); 3222 } 3223 return false; 3224 } 3225 mLazyRoamEnabled = configureLazyRoam(); 3226 if (mLazyRoamEnabled == false) { 3227 if (USE_PAUSE_SCANS) { 3228 mWifiNative.restartScan(); 3229 } 3230 return false; 3231 } 3232 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3233 configureSsidWhiteList(); 3234 } 3235 if (!startConnectedGScan(reason)) { 3236 if (USE_PAUSE_SCANS) { 3237 mWifiNative.restartScan(); 3238 } 3239 return false; 3240 } 3241 if (USE_PAUSE_SCANS) { 3242 mWifiNative.restartScan(); 3243 } 3244 mConnectedModeGScanOffloadStarted = true; 3245 if (DBG) { 3246 loge("startGScanConnectedModeOffload success"); 3247 } 3248 return true; 3249 } 3250 3251 private boolean startGScanDisconnectedModeOffload(String reason) { 3252 if (DBG) { 3253 loge("startGScanDisconnectedModeOffload " + reason); 3254 } 3255 stopGScan("startGScanDisconnectedModeOffload " + reason); 3256 if (USE_PAUSE_SCANS) { 3257 mWifiNative.pauseScan(); 3258 } 3259 mPnoEnabled = configurePno(); 3260 if (mPnoEnabled == false) { 3261 if (USE_PAUSE_SCANS) { 3262 mWifiNative.restartScan(); 3263 } 3264 return false; 3265 } 3266 if (!startDisconnectedGScan(reason)) { 3267 if (USE_PAUSE_SCANS) { 3268 mWifiNative.restartScan(); 3269 } 3270 return false; 3271 } 3272 if (USE_PAUSE_SCANS) { 3273 mWifiNative.restartScan(); 3274 } 3275 return true; 3276 } 3277 3278 private boolean configurePno() { 3279 if (!useHalBasedAutoJoinOffload()) return false; 3280 3281 if (mWifiScanner == null) { 3282 log("configurePno: mWifiScanner is null "); 3283 return true; 3284 } 3285 3286 List<WifiNative.WifiPnoNetwork> llist 3287 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3288 if (llist == null || llist.size() == 0) { 3289 stopPnoOffload(); 3290 log("configurePno: empty PNO list "); 3291 return true; 3292 } 3293 if (DBG) { 3294 log("configurePno: got llist size " + llist.size()); 3295 } 3296 3297 // first program the network we want to look for thru the pno API 3298 WifiNative.WifiPnoNetwork list[] 3299 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3300 3301 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3302 Log.e(TAG, "Failed to set pno, length = " + list.length); 3303 return false; 3304 } 3305 3306 if (true) { 3307 StringBuilder sb = new StringBuilder(); 3308 for (WifiNative.WifiPnoNetwork network : list) { 3309 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3310 sb.append(" flags="); 3311 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3312 sb.append("] "); 3313 3314 } 3315 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3316 } 3317 return true; 3318 } 3319 3320 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3321 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3322 3323 private boolean startConnectedGScan(String reason) { 3324 // send a scan background request so as to kick firmware 3325 // 5GHz roaming and autojoin 3326 // We do this only if screen is on 3327 WifiScanner.ScanSettings settings; 3328 3329 if (mPnoEnabled || mLazyRoamEnabled) { 3330 settings = new WifiScanner.ScanSettings(); 3331 settings.band = WifiScanner.WIFI_BAND_BOTH; 3332 long now = System.currentTimeMillis(); 3333 3334 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3335 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3336 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3337 } else { 3338 mGScanStartTimeMilli = now; 3339 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3340 // if we start offload with short interval, then reconfigure it after a given 3341 // duration of time so as to reduce the scan frequency 3342 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3343 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3344 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3345 (long)delay); 3346 mRestartAutoJoinOffloadCounter++; 3347 } 3348 mGScanPeriodMilli = settings.periodInMs; 3349 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3350 if (DBG) { 3351 log("startConnectedScan: settings band="+ settings.band 3352 + " period=" + settings.periodInMs); 3353 } 3354 3355 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3356 if (true) { 3357 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3358 } 3359 } 3360 return true; 3361 } 3362 3363 private boolean startDisconnectedGScan(String reason) { 3364 // send a scan background request so as to kick firmware 3365 // PNO 3366 // This is done in both screen On and screen Off modes 3367 WifiScanner.ScanSettings settings; 3368 3369 if (mWifiScanner == null) { 3370 log("startDisconnectedGScan: no wifi scanner"); 3371 return false; 3372 } 3373 3374 if (mPnoEnabled || mLazyRoamEnabled) { 3375 settings = new WifiScanner.ScanSettings(); 3376 settings.band = WifiScanner.WIFI_BAND_BOTH; 3377 long now = System.currentTimeMillis(); 3378 3379 3380 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3381 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3382 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3383 } else { 3384 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3385 mGScanStartTimeMilli = now; 3386 // if we start offload with short interval, then reconfigure it after a given 3387 // duration of time so as to reduce the scan frequency 3388 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3389 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3390 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3391 (long)delay); 3392 mRestartAutoJoinOffloadCounter++; 3393 } 3394 mGScanPeriodMilli = settings.periodInMs; 3395 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3396 if (DBG) { 3397 log("startDisconnectedScan: settings band="+ settings.band 3398 + " period=" + settings.periodInMs); 3399 } 3400 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3401 if (true) { 3402 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3403 } 3404 } 3405 return true; 3406 } 3407 3408 private boolean stopGScan(String reason) { 3409 mGScanStartTimeMilli = 0; 3410 mGScanPeriodMilli = 0; 3411 if (mWifiScanner != null) { 3412 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3413 } 3414 mConnectedModeGScanOffloadStarted = false; 3415 if (true) { 3416 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3417 } 3418 return true; 3419 } 3420 3421 private void handleScreenStateChanged(boolean screenOn) { 3422 mScreenOn = screenOn; 3423 if (PDBG) { 3424 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3425 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3426 + " state " + getCurrentState().getName() 3427 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3428 } 3429 enableRssiPolling(screenOn); 3430 if (screenOn) enableAllNetworks(); 3431 if (mUserWantsSuspendOpt.get()) { 3432 if (screenOn) { 3433 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3434 } else { 3435 // Allow 2s for suspend optimizations to be set 3436 mSuspendWakeLock.acquire(2000); 3437 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3438 } 3439 } 3440 mScreenBroadcastReceived.set(true); 3441 3442 getWifiLinkLayerStats(false); 3443 mOnTimeScreenStateChange = mOnTime; 3444 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3445 3446 cancelDelayedScan(); 3447 3448 if (screenOn) { 3449 enableBackgroundScan(false); 3450 setScanAlarm(false); 3451 clearBlacklist(); 3452 3453 fullBandConnectedTimeIntervalMilli 3454 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3455 // In either Disconnectedstate or ConnectedState, 3456 // start the scan alarm so as to enable autojoin 3457 if (getCurrentState() == mConnectedState 3458 && allowFullBandScanAndAssociated()) { 3459 if (useHalBasedAutoJoinOffload()) { 3460 startGScanConnectedModeOffload("screenOnConnected"); 3461 } else { 3462 // Scan after 500ms 3463 startDelayedScan(500, null, null); 3464 } 3465 } else if (getCurrentState() == mDisconnectedState) { 3466 if (useHalBasedAutoJoinOffload()) { 3467 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3468 } else { 3469 // Scan after 500ms 3470 startDelayedScan(500, null, null); 3471 } 3472 } 3473 } else { 3474 if (getCurrentState() == mDisconnectedState) { 3475 // Screen Off and Disconnected and chipset doesn't support scan offload 3476 // => start scan alarm 3477 // Screen Off and Disconnected and chipset does support scan offload 3478 // => will use scan offload (i.e. background scan) 3479 if (useHalBasedAutoJoinOffload()) { 3480 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3481 } else { 3482 if (!mBackgroundScanSupported) { 3483 setScanAlarm(true); 3484 } else { 3485 if (!mIsScanOngoing) { 3486 enableBackgroundScan(true); 3487 } 3488 } 3489 } 3490 } else { 3491 enableBackgroundScan(false); 3492 if (useHalBasedAutoJoinOffload()) { 3493 // don't try stop Gscan if it is not enabled 3494 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3495 } 3496 } 3497 } 3498 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3499 3500 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3501 } 3502 3503 private void checkAndSetConnectivityInstance() { 3504 if (mCm == null) { 3505 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3506 } 3507 } 3508 3509 private boolean startTethering(ArrayList<String> available) { 3510 3511 boolean wifiAvailable = false; 3512 3513 checkAndSetConnectivityInstance(); 3514 3515 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3516 3517 for (String intf : available) { 3518 for (String regex : wifiRegexs) { 3519 if (intf.matches(regex)) { 3520 3521 InterfaceConfiguration ifcg = null; 3522 try { 3523 ifcg = mNwService.getInterfaceConfig(intf); 3524 if (ifcg != null) { 3525 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3526 ifcg.setLinkAddress(new LinkAddress( 3527 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3528 ifcg.setInterfaceUp(); 3529 3530 mNwService.setInterfaceConfig(intf, ifcg); 3531 } 3532 } catch (Exception e) { 3533 loge("Error configuring interface " + intf + ", :" + e); 3534 return false; 3535 } 3536 3537 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3538 loge("Error tethering on " + intf); 3539 return false; 3540 } 3541 mTetherInterfaceName = intf; 3542 return true; 3543 } 3544 } 3545 } 3546 // We found no interfaces to tether 3547 return false; 3548 } 3549 3550 private void stopTethering() { 3551 3552 checkAndSetConnectivityInstance(); 3553 3554 /* Clear the interface config to allow dhcp correctly configure new 3555 ip settings */ 3556 InterfaceConfiguration ifcg = null; 3557 try { 3558 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3559 if (ifcg != null) { 3560 ifcg.setLinkAddress( 3561 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3562 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3563 } 3564 } catch (Exception e) { 3565 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3566 } 3567 3568 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3569 loge("Untether initiate failed!"); 3570 } 3571 } 3572 3573 private boolean isWifiTethered(ArrayList<String> active) { 3574 3575 checkAndSetConnectivityInstance(); 3576 3577 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3578 for (String intf : active) { 3579 for (String regex : wifiRegexs) { 3580 if (intf.matches(regex)) { 3581 return true; 3582 } 3583 } 3584 } 3585 // We found no interfaces that are tethered 3586 return false; 3587 } 3588 3589 /** 3590 * Set the country code from the system setting value, if any. 3591 */ 3592 private void setCountryCode() { 3593 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3594 Settings.Global.WIFI_COUNTRY_CODE); 3595 if (countryCode != null && !countryCode.isEmpty()) { 3596 setCountryCode(countryCode, false); 3597 } else { 3598 //use driver default 3599 } 3600 } 3601 3602 /** 3603 * Set the frequency band from the system setting value, if any. 3604 */ 3605 private void setFrequencyBand() { 3606 int band = Settings.Global.getInt(mContext.getContentResolver(), 3607 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3608 setFrequencyBand(band, false); 3609 } 3610 3611 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3612 if (DBG) { 3613 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3614 + " -want " + mUserWantsSuspendOpt.get() 3615 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3616 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3617 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3618 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3619 } 3620 //mWifiNative.setSuspendOptimizations(enabled); 3621 3622 if (enabled) { 3623 mSuspendOptNeedsDisabled &= ~reason; 3624 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3625 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3626 if (DBG) { 3627 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3628 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3629 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3630 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3631 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3632 } 3633 mWifiNative.setSuspendOptimizations(true); 3634 } 3635 } else { 3636 mSuspendOptNeedsDisabled |= reason; 3637 mWifiNative.setSuspendOptimizations(false); 3638 } 3639 } 3640 3641 private void setSuspendOptimizations(int reason, boolean enabled) { 3642 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3643 if (enabled) { 3644 mSuspendOptNeedsDisabled &= ~reason; 3645 } else { 3646 mSuspendOptNeedsDisabled |= reason; 3647 } 3648 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3649 } 3650 3651 private void setWifiState(int wifiState) { 3652 final int previousWifiState = mWifiState.get(); 3653 3654 try { 3655 if (wifiState == WIFI_STATE_ENABLED) { 3656 mBatteryStats.noteWifiOn(); 3657 } else if (wifiState == WIFI_STATE_DISABLED) { 3658 mBatteryStats.noteWifiOff(); 3659 } 3660 } catch (RemoteException e) { 3661 loge("Failed to note battery stats in wifi"); 3662 } 3663 3664 mWifiState.set(wifiState); 3665 3666 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3667 3668 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3669 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3670 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3671 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3672 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3673 } 3674 3675 private void setWifiApState(int wifiApState) { 3676 final int previousWifiApState = mWifiApState.get(); 3677 3678 try { 3679 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3680 mBatteryStats.noteWifiOn(); 3681 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3682 mBatteryStats.noteWifiOff(); 3683 } 3684 } catch (RemoteException e) { 3685 loge("Failed to note battery stats in wifi"); 3686 } 3687 3688 // Update state 3689 mWifiApState.set(wifiApState); 3690 3691 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3692 3693 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3694 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3695 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3696 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3697 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3698 } 3699 3700 /* 3701 void ageOutScanResults(int age) { 3702 synchronized(mScanResultCache) { 3703 // Trim mScanResults, which prevent WifiStateMachine to return 3704 // obsolete scan results to queriers 3705 long now = System.CurrentTimeMillis(); 3706 for (int i = 0; i < mScanResults.size(); i++) { 3707 ScanResult result = mScanResults.get(i); 3708 if ((result.seen > now || (now - result.seen) > age)) { 3709 mScanResults.remove(i); 3710 } 3711 } 3712 } 3713 }*/ 3714 3715 private static final String IE_STR = "ie="; 3716 private static final String ID_STR = "id="; 3717 private static final String BSSID_STR = "bssid="; 3718 private static final String FREQ_STR = "freq="; 3719 private static final String LEVEL_STR = "level="; 3720 private static final String TSF_STR = "tsf="; 3721 private static final String FLAGS_STR = "flags="; 3722 private static final String SSID_STR = "ssid="; 3723 private static final String DELIMITER_STR = "===="; 3724 private static final String END_STR = "####"; 3725 3726 int emptyScanResultCount = 0; 3727 3728 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3729 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3730 3731 /** 3732 * Format: 3733 * <p/> 3734 * id=1 3735 * bssid=68:7f:76:d7:1a:6e 3736 * freq=2412 3737 * level=-44 3738 * tsf=1344626243700342 3739 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3740 * ssid=zfdy 3741 * ==== 3742 * id=2 3743 * bssid=68:5f:74:d7:1a:6f 3744 * freq=5180 3745 * level=-73 3746 * tsf=1344626243700373 3747 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3748 * ssid=zuby 3749 * ==== 3750 */ 3751 private void setScanResults() { 3752 mNumScanResultsKnown = 0; 3753 mNumScanResultsReturned = 0; 3754 String bssid = ""; 3755 int level = 0; 3756 int freq = 0; 3757 long tsf = 0; 3758 String flags = ""; 3759 WifiSsid wifiSsid = null; 3760 String scanResults; 3761 String tmpResults; 3762 StringBuffer scanResultsBuf = new StringBuffer(); 3763 int sid = 0; 3764 3765 while (true) { 3766 tmpResults = mWifiNative.scanResults(sid); 3767 if (TextUtils.isEmpty(tmpResults)) break; 3768 scanResultsBuf.append(tmpResults); 3769 scanResultsBuf.append("\n"); 3770 String[] lines = tmpResults.split("\n"); 3771 sid = -1; 3772 for (int i = lines.length - 1; i >= 0; i--) { 3773 if (lines[i].startsWith(END_STR)) { 3774 break; 3775 } else if (lines[i].startsWith(ID_STR)) { 3776 try { 3777 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3778 } catch (NumberFormatException e) { 3779 // Nothing to do 3780 } 3781 break; 3782 } 3783 } 3784 if (sid == -1) break; 3785 } 3786 3787 // Age out scan results, we return all scan results found in the last 12 seconds, 3788 // and NOT all scan results since last scan. 3789 // ageOutScanResults(12000); 3790 3791 scanResults = scanResultsBuf.toString(); 3792 if (TextUtils.isEmpty(scanResults)) { 3793 emptyScanResultCount++; 3794 if (emptyScanResultCount > 10) { 3795 // If we got too many empty scan results, the current scan cache is stale, 3796 // hence clear it. 3797 mScanResults = new ArrayList<>(); 3798 } 3799 return; 3800 } 3801 3802 emptyScanResultCount = 0; 3803 3804 mWifiConfigStore.trimANQPCache(false); 3805 3806 // note that all these splits and substrings keep references to the original 3807 // huge string buffer while the amount we really want is generally pretty small 3808 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3809 synchronized (mScanResultCache) { 3810 mScanResults = new ArrayList<>(); 3811 String[] lines = scanResults.split("\n"); 3812 final int bssidStrLen = BSSID_STR.length(); 3813 final int flagLen = FLAGS_STR.length(); 3814 String infoElements = null; 3815 List<String> anqpLines = null; 3816 3817 for (String line : lines) { 3818 if (line.startsWith(BSSID_STR)) { 3819 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3820 } else if (line.startsWith(FREQ_STR)) { 3821 try { 3822 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3823 } catch (NumberFormatException e) { 3824 freq = 0; 3825 } 3826 } else if (line.startsWith(LEVEL_STR)) { 3827 try { 3828 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3829 /* some implementations avoid negative values by adding 256 3830 * so we need to adjust for that here. 3831 */ 3832 if (level > 0) level -= 256; 3833 } catch (NumberFormatException e) { 3834 level = 0; 3835 } 3836 } else if (line.startsWith(TSF_STR)) { 3837 try { 3838 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3839 } catch (NumberFormatException e) { 3840 tsf = 0; 3841 } 3842 } else if (line.startsWith(FLAGS_STR)) { 3843 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3844 } else if (line.startsWith(SSID_STR)) { 3845 wifiSsid = WifiSsid.createFromAsciiEncoded( 3846 line.substring(SSID_STR.length())); 3847 } else if (line.startsWith(IE_STR)) { 3848 infoElements = line; 3849 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3850 if (anqpLines == null) { 3851 anqpLines = new ArrayList<>(); 3852 } 3853 anqpLines.add(line); 3854 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3855 if (bssid != null) { 3856 try { 3857 NetworkDetail networkDetail = 3858 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3859 3860 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3861 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3862 Log.d(Utils.hs2LogTag(getClass()), 3863 String.format("Inconsistent SSID on BSSID '%s':" + 3864 " '%s' vs '%s': %s", 3865 bssid, xssid, networkDetail.getSSID(), infoElements)); 3866 } 3867 3868 if (networkDetail.hasInterworking()) { 3869 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3870 } 3871 3872 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3873 if (scanDetail != null) { 3874 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3875 flags, freq, tsf); 3876 } else { 3877 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3878 flags, level, freq, tsf); 3879 mScanResultCache.put(networkDetail, scanDetail); 3880 } 3881 3882 mNumScanResultsReturned++; // Keep track of how many scan results we got 3883 // as part of this scan's processing 3884 mScanResults.add(scanDetail); 3885 } catch (IllegalArgumentException iae) { 3886 Log.d(TAG, "Failed to parse information elements: " + iae); 3887 } 3888 } 3889 bssid = null; 3890 level = 0; 3891 freq = 0; 3892 tsf = 0; 3893 flags = ""; 3894 wifiSsid = null; 3895 infoElements = null; 3896 anqpLines = null; 3897 } 3898 } 3899 } 3900 3901 boolean attemptAutoJoin = true; 3902 SupplicantState state = mWifiInfo.getSupplicantState(); 3903 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3904 if (getCurrentState() == mRoamingState 3905 || getCurrentState() == mObtainingIpState 3906 || getCurrentState() == mScanModeState 3907 || getCurrentState() == mDisconnectingState 3908 || (getCurrentState() == mConnectedState 3909 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3910 || linkDebouncing 3911 || state == SupplicantState.ASSOCIATING 3912 || state == SupplicantState.AUTHENTICATING 3913 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3914 || state == SupplicantState.GROUP_HANDSHAKE 3915 || (/* keep autojoin enabled if user has manually selected a wifi network, 3916 so as to make sure we reliably remain connected to this network */ 3917 mConnectionRequests == 0 && selection == null)) { 3918 // Dont attempt auto-joining again while we are already attempting to join 3919 // and/or obtaining Ip address 3920 attemptAutoJoin = false; 3921 } 3922 if (DBG) { 3923 if (selection == null) { 3924 selection = "<none>"; 3925 } 3926 loge("wifi setScanResults state" + getCurrentState() 3927 + " sup_state=" + state 3928 + " debouncing=" + linkDebouncing 3929 + " mConnectionRequests=" + mConnectionRequests 3930 + " selection=" + selection 3931 + " mNumScanResultsReturned " + mNumScanResultsReturned 3932 + " mScanResults " + mScanResults.size()); 3933 } 3934 if (attemptAutoJoin) { 3935 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3936 } 3937 // Loose last selected configuration if we have been disconnected for 5 minutes 3938 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3939 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3940 } 3941 3942 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3943 synchronized (mScanResultCache) { 3944 // AutoJoincontroller will directly acces the scan result list and update it with 3945 // ScanResult status 3946 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3947 } 3948 } 3949 if (linkDebouncing) { 3950 // If debouncing, we dont re-select a SSID or BSSID hence 3951 // there is no need to call the network selection code 3952 // in WifiAutoJoinController, instead, 3953 // just try to reconnect to the same SSID by triggering a roam 3954 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3955 } 3956 } 3957 3958 /* 3959 * Fetch RSSI, linkspeed, and frequency on current connection 3960 */ 3961 private void fetchRssiLinkSpeedAndFrequencyNative() { 3962 int newRssi = -1; 3963 int newLinkSpeed = -1; 3964 int newFrequency = -1; 3965 3966 String signalPoll = mWifiNative.signalPoll(); 3967 3968 if (signalPoll != null) { 3969 String[] lines = signalPoll.split("\n"); 3970 for (String line : lines) { 3971 String[] prop = line.split("="); 3972 if (prop.length < 2) continue; 3973 try { 3974 if (prop[0].equals("RSSI")) { 3975 newRssi = Integer.parseInt(prop[1]); 3976 } else if (prop[0].equals("LINKSPEED")) { 3977 newLinkSpeed = Integer.parseInt(prop[1]); 3978 } else if (prop[0].equals("FREQUENCY")) { 3979 newFrequency = Integer.parseInt(prop[1]); 3980 } 3981 } catch (NumberFormatException e) { 3982 //Ignore, defaults on rssi and linkspeed are assigned 3983 } 3984 } 3985 } 3986 3987 if (PDBG) { 3988 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3989 + Integer.toString(newRssi) + " linkspeed=" 3990 + Integer.toString(newLinkSpeed)); 3991 } 3992 3993 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3994 // screen out invalid values 3995 /* some implementations avoid negative values by adding 256 3996 * so we need to adjust for that here. 3997 */ 3998 if (newRssi > 0) newRssi -= 256; 3999 mWifiInfo.setRssi(newRssi); 4000 /* 4001 * Rather then sending the raw RSSI out every time it 4002 * changes, we precalculate the signal level that would 4003 * be displayed in the status bar, and only send the 4004 * broadcast if that much more coarse-grained number 4005 * changes. This cuts down greatly on the number of 4006 * broadcasts, at the cost of not informing others 4007 * interested in RSSI of all the changes in signal 4008 * level. 4009 */ 4010 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4011 if (newSignalLevel != mLastSignalLevel) { 4012 sendRssiChangeBroadcast(newRssi); 4013 } 4014 mLastSignalLevel = newSignalLevel; 4015 } else { 4016 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4017 } 4018 4019 if (newLinkSpeed != -1) { 4020 mWifiInfo.setLinkSpeed(newLinkSpeed); 4021 } 4022 if (newFrequency > 0) { 4023 if (ScanResult.is5GHz(newFrequency)) { 4024 mWifiConnectionStatistics.num5GhzConnected++; 4025 } 4026 if (ScanResult.is24GHz(newFrequency)) { 4027 mWifiConnectionStatistics.num24GhzConnected++; 4028 } 4029 mWifiInfo.setFrequency(newFrequency); 4030 } 4031 mWifiConfigStore.updateConfiguration(mWifiInfo); 4032 } 4033 4034 /** 4035 * Determine if we need to switch network: 4036 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4037 * - match the uregncy of the switch versus the packet usage at the interface 4038 */ 4039 boolean shouldSwitchNetwork(int networkDelta) { 4040 int delta; 4041 if (networkDelta <= 0) { 4042 return false; 4043 } 4044 delta = networkDelta; 4045 if (mWifiInfo != null) { 4046 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 4047 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4048 // If AutoJoin while associated is not enabled, 4049 // we should never switch network when already associated 4050 delta = -1000; 4051 } else { 4052 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4053 // TODO: at the interface. We should also discriminate between ucast and mcast, 4054 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4055 // TODO: broadcasts 4056 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4057 delta -= 999; 4058 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4059 delta -= 6; 4060 } 4061 loge("WifiStateMachine shouldSwitchNetwork " 4062 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4063 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4064 + " delta " + networkDelta + " -> " + delta); 4065 } 4066 } else { 4067 loge("WifiStateMachine shouldSwitchNetwork " 4068 + " delta " + networkDelta + " -> " + delta); 4069 } 4070 if (delta > 0) { 4071 return true; 4072 } 4073 return false; 4074 } 4075 4076 // Polling has completed, hence we wont have a score anymore 4077 private void cleanWifiScore() { 4078 mWifiInfo.txBadRate = 0; 4079 mWifiInfo.txSuccessRate = 0; 4080 mWifiInfo.txRetriesRate = 0; 4081 mWifiInfo.rxSuccessRate = 0; 4082 } 4083 4084 int mBadLinkspeedcount = 0; 4085 4086 // For debug, provide information about the last scoring operation 4087 String wifiScoringReport = null; 4088 4089 private void calculateWifiScore(WifiLinkLayerStats stats) { 4090 StringBuilder sb = new StringBuilder(); 4091 4092 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4093 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4094 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4095 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4096 < mWifiConfigStore.badLinkSpeed5); 4097 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4098 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4099 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4100 >= mWifiConfigStore.goodLinkSpeed5); 4101 4102 if (isBadLinkspeed) { 4103 if (mBadLinkspeedcount < 6) 4104 mBadLinkspeedcount++; 4105 } else { 4106 if (mBadLinkspeedcount > 0) 4107 mBadLinkspeedcount--; 4108 } 4109 4110 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4111 if (isGoodLinkspeed) sb.append(" gl"); 4112 4113 /** 4114 * We want to make sure that we use the 24GHz RSSI thresholds if 4115 * there are 2.4GHz scan results 4116 * otherwise we end up lowering the score based on 5GHz values 4117 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4118 * We also might unblacklist the configuation based on 2.4GHz 4119 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4120 */ 4121 boolean use24Thresholds = false; 4122 boolean homeNetworkBoost = false; 4123 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4124 ScanDetailCache scanDetailCache = 4125 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4126 if (currentConfiguration != null && scanDetailCache != null) { 4127 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4128 if (currentConfiguration.visibility != null) { 4129 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4130 && currentConfiguration.visibility.rssi24 4131 >= (currentConfiguration.visibility.rssi5 - 2)) { 4132 use24Thresholds = true; 4133 } 4134 } 4135 if (scanDetailCache.size() <= 6 4136 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4137 && currentConfiguration.allowedKeyManagement. 4138 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4139 // A PSK network with less than 6 known BSSIDs 4140 // This is most likely a home network and thus we want to stick to wifi more 4141 homeNetworkBoost = true; 4142 } 4143 } 4144 if (homeNetworkBoost) sb.append(" hn"); 4145 if (use24Thresholds) sb.append(" u24"); 4146 4147 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4148 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4149 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4150 4151 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4152 4153 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4154 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4155 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4156 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4157 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4158 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4159 4160 if (isBadRSSI) sb.append(" br"); 4161 if (isLowRSSI) sb.append(" lr"); 4162 if (isHighRSSI) sb.append(" hr"); 4163 4164 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4165 if (currentConfiguration != null && 4166 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4167 if (isBadRSSI) { 4168 currentConfiguration.numTicksAtBadRSSI++; 4169 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4170 // We remained associated for a compound amount of time while passing 4171 // traffic, hence loose the corresponding user triggered disabled stats 4172 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4173 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4174 } 4175 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4176 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4177 } 4178 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4179 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4180 } 4181 currentConfiguration.numTicksAtBadRSSI = 0; 4182 } 4183 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4184 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4185 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4186 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4187 score = score - 5; 4188 penalizedDueToUserTriggeredDisconnect = 1; 4189 sb.append(" p1"); 4190 } 4191 } else if (isLowRSSI) { 4192 currentConfiguration.numTicksAtLowRSSI++; 4193 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4194 // We remained associated for a compound amount of time while passing 4195 // traffic, hence loose the corresponding user triggered disabled stats 4196 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4197 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4198 } 4199 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4200 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4201 } 4202 currentConfiguration.numTicksAtLowRSSI = 0; 4203 } 4204 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4205 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4206 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4207 score = score - 5; 4208 penalizedDueToUserTriggeredDisconnect = 2; 4209 sb.append(" p2"); 4210 } 4211 } else if (!isHighRSSI) { 4212 currentConfiguration.numTicksAtNotHighRSSI++; 4213 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4214 // We remained associated for a compound amount of time while passing 4215 // traffic, hence loose the corresponding user triggered disabled stats 4216 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4217 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4218 } 4219 currentConfiguration.numTicksAtNotHighRSSI = 0; 4220 } 4221 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4222 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4223 score = score - 5; 4224 penalizedDueToUserTriggeredDisconnect = 3; 4225 sb.append(" p3"); 4226 } 4227 } 4228 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4229 currentConfiguration.numTicksAtLowRSSI, 4230 currentConfiguration.numTicksAtNotHighRSSI)); 4231 } 4232 4233 if (PDBG) { 4234 String rssiStatus = ""; 4235 if (isBadRSSI) rssiStatus += " badRSSI "; 4236 else if (isHighRSSI) rssiStatus += " highRSSI "; 4237 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4238 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4239 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4240 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4241 + " score=" + Integer.toString(mWifiInfo.score) 4242 + rssiStatus 4243 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4244 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4245 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4246 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4247 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4248 } 4249 4250 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4251 && (isBadRSSI || isLowRSSI)) { 4252 // Link is stuck 4253 if (mWifiInfo.linkStuckCount < 5) 4254 mWifiInfo.linkStuckCount += 1; 4255 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4256 if (PDBG) loge(" bad link -> stuck count =" 4257 + Integer.toString(mWifiInfo.linkStuckCount)); 4258 } else if (mWifiInfo.txBadRate < 0.3) { 4259 if (mWifiInfo.linkStuckCount > 0) 4260 mWifiInfo.linkStuckCount -= 1; 4261 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4262 if (PDBG) loge(" good link -> stuck count =" 4263 + Integer.toString(mWifiInfo.linkStuckCount)); 4264 } 4265 4266 sb.append(String.format(" [%d", score)); 4267 4268 if (mWifiInfo.linkStuckCount > 1) { 4269 // Once link gets stuck for more than 3 seconds, start reducing the score 4270 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4271 } 4272 sb.append(String.format(",%d", score)); 4273 4274 if (isBadLinkspeed) { 4275 score -= 4; 4276 if (PDBG) { 4277 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4278 + " score=" + Integer.toString(score)); 4279 } 4280 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4281 score += 4; // So as bad rssi alone dont kill us 4282 } 4283 sb.append(String.format(",%d", score)); 4284 4285 if (isBadRSSI) { 4286 if (mWifiInfo.badRssiCount < 7) 4287 mWifiInfo.badRssiCount += 1; 4288 } else if (isLowRSSI) { 4289 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4290 if (mWifiInfo.badRssiCount > 0) { 4291 // Decrement bad Rssi count 4292 mWifiInfo.badRssiCount -= 1; 4293 } 4294 } else { 4295 mWifiInfo.badRssiCount = 0; 4296 mWifiInfo.lowRssiCount = 0; 4297 } 4298 4299 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4300 sb.append(String.format(",%d", score)); 4301 4302 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4303 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4304 + " --> score " + Integer.toString(score)); 4305 4306 4307 if (isHighRSSI) { 4308 score += 5; 4309 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 4310 } 4311 sb.append(String.format(",%d]", score)); 4312 4313 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4314 4315 //sanitize boundaries 4316 if (score > NetworkAgent.WIFI_BASE_SCORE) 4317 score = NetworkAgent.WIFI_BASE_SCORE; 4318 if (score < 0) 4319 score = 0; 4320 4321 //report score 4322 if (score != mWifiInfo.score) { 4323 if (DBG) { 4324 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4325 } 4326 mWifiInfo.score = score; 4327 if (mNetworkAgent != null) { 4328 mNetworkAgent.sendNetworkScore(score); 4329 } 4330 } 4331 wifiScoringReport = sb.toString(); 4332 } 4333 4334 public double getTxPacketRate() { 4335 if (mWifiInfo != null) { 4336 return mWifiInfo.txSuccessRate; 4337 } 4338 return -1; 4339 } 4340 4341 public double getRxPacketRate() { 4342 if (mWifiInfo != null) { 4343 return mWifiInfo.rxSuccessRate; 4344 } 4345 return -1; 4346 } 4347 4348 /** 4349 * Fetch TX packet counters on current connection 4350 */ 4351 private void fetchPktcntNative(RssiPacketCountInfo info) { 4352 String pktcntPoll = mWifiNative.pktcntPoll(); 4353 4354 if (pktcntPoll != null) { 4355 String[] lines = pktcntPoll.split("\n"); 4356 for (String line : lines) { 4357 String[] prop = line.split("="); 4358 if (prop.length < 2) continue; 4359 try { 4360 if (prop[0].equals("TXGOOD")) { 4361 info.txgood = Integer.parseInt(prop[1]); 4362 } else if (prop[0].equals("TXBAD")) { 4363 info.txbad = Integer.parseInt(prop[1]); 4364 } 4365 } catch (NumberFormatException e) { 4366 // Ignore 4367 } 4368 } 4369 } 4370 } 4371 4372 private boolean clearIPv4Address(String iface) { 4373 try { 4374 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4375 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4376 mNwService.setInterfaceConfig(iface, ifcg); 4377 return true; 4378 } catch (RemoteException e) { 4379 return false; 4380 } 4381 } 4382 4383 private boolean isProvisioned(LinkProperties lp) { 4384 return lp.isProvisioned() || 4385 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4386 } 4387 4388 /** 4389 * Creates a new LinkProperties object by merging information from various sources. 4390 * <p/> 4391 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4392 * netlink, static configuration, ...). When one of these sources of information has updated 4393 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4394 * information that came from other sources. Instead, when one of those sources has new 4395 * information, we update the object that tracks the information from that source and then 4396 * call this method to integrate the change into a new LinkProperties object for subsequent 4397 * comparison with mLinkProperties. 4398 * <p/> 4399 * The information used to build LinkProperties is currently obtained as follows: 4400 * - Interface name: set in the constructor. 4401 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4402 * - IPv4 routes, DNS servers, and domains: DHCP. 4403 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4404 * - HTTP proxy: the wifi config store. 4405 */ 4406 private LinkProperties makeLinkProperties() { 4407 LinkProperties newLp = new LinkProperties(); 4408 4409 // Interface name, proxy, and TCP buffer sizes are locally configured. 4410 newLp.setInterfaceName(mInterfaceName); 4411 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4412 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4413 newLp.setTcpBufferSizes(mTcpBufferSizes); 4414 } 4415 4416 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4417 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4418 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4419 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4420 newLp.addRoute(route); 4421 } 4422 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4423 // Only add likely reachable DNS servers. 4424 // TODO: investigate deleting this. 4425 if (newLp.isReachable(dns)) { 4426 newLp.addDnsServer(dns); 4427 } 4428 } 4429 4430 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4431 synchronized (mDhcpResultsLock) { 4432 // Even when we're using static configuration, we don't need to look at the config 4433 // store, because static IP configuration also populates mDhcpResults. 4434 if ((mDhcpResults != null)) { 4435 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4436 newLp.addRoute(route); 4437 } 4438 for (InetAddress dns : mDhcpResults.dnsServers) { 4439 // Only add likely reachable DNS servers. 4440 // TODO: investigate deleting this. 4441 if (newLp.isReachable(dns)) { 4442 newLp.addDnsServer(dns); 4443 } 4444 } 4445 newLp.setDomains(mDhcpResults.domains); 4446 } 4447 } 4448 4449 return newLp; 4450 } 4451 4452 private void updateLinkProperties(int reason) { 4453 LinkProperties newLp = makeLinkProperties(); 4454 4455 final boolean linkChanged = !newLp.equals(mLinkProperties); 4456 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4457 final boolean isProvisioned = isProvisioned(newLp); 4458 final boolean lostIPv4Provisioning = 4459 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4460 final DetailedState detailedState = getNetworkDetailedState(); 4461 4462 if (linkChanged) { 4463 if (DBG) { 4464 log("Link configuration changed for netId: " + mLastNetworkId 4465 + " old: " + mLinkProperties + " new: " + newLp); 4466 } 4467 mLinkProperties = newLp; 4468 if (mIpReachabilityMonitor != null) { 4469 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4470 } 4471 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4472 } 4473 4474 if (DBG) { 4475 StringBuilder sb = new StringBuilder(); 4476 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4477 sb.append(" state: " + detailedState); 4478 sb.append(" reason: " + smToString(reason)); 4479 4480 if (mLinkProperties != null) { 4481 if (mLinkProperties.hasIPv4Address()) { 4482 sb.append(" v4"); 4483 } 4484 if (mLinkProperties.hasGlobalIPv6Address()) { 4485 sb.append(" v6"); 4486 } 4487 if (mLinkProperties.hasIPv4DefaultRoute()) { 4488 sb.append(" v4r"); 4489 } 4490 if (mLinkProperties.hasIPv6DefaultRoute()) { 4491 sb.append(" v6r"); 4492 } 4493 if (mLinkProperties.hasIPv4DnsServer()) { 4494 sb.append(" v4dns"); 4495 } 4496 if (mLinkProperties.hasIPv6DnsServer()) { 4497 sb.append(" v6dns"); 4498 } 4499 if (isProvisioned) { 4500 sb.append(" isprov"); 4501 } 4502 } 4503 loge(sb.toString()); 4504 } 4505 4506 // If we just configured or lost IP configuration, do the needful. 4507 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4508 // here because those should only be called if we're attempting to connect or already 4509 // connected, whereas updateLinkProperties can be called at any time. 4510 switch (reason) { 4511 case DhcpStateMachine.DHCP_SUCCESS: 4512 case CMD_STATIC_IP_SUCCESS: 4513 // IPv4 provisioning succeded. Advance to connected state. 4514 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4515 if (!isProvisioned) { 4516 // Can never happen unless DHCP reports success but isProvisioned thinks the 4517 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4518 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4519 // TODO: disconnect here instead. If our configuration is not usable, there's no 4520 // point in staying connected, and if mLinkProperties is out of sync with 4521 // reality, that will cause problems in the future. 4522 loge("IPv4 config succeeded, but not provisioned"); 4523 } 4524 break; 4525 4526 case DhcpStateMachine.DHCP_FAILURE: 4527 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4528 // give up and disconnect. 4529 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4530 if (!isProvisioned || lostIPv4Provisioning) { 4531 sendMessage(CMD_IP_CONFIGURATION_LOST); 4532 } else { 4533 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4534 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4535 4536 // To be sure we don't get stuck with a non-working network if all we had is 4537 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4538 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4539 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4540 // necessary for provisioning, its deletion will cause us to disconnect. 4541 // 4542 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4543 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4544 // not return true if we're using DHCP and don't have an IPv4 default route. So 4545 // for now it's only here for extra redundancy. However, it will increase 4546 // robustness if we move to getting IPv4 routes from netlink as well. 4547 loge("DHCP failure: provisioned, clearing IPv4 address."); 4548 if (!clearIPv4Address(mInterfaceName)) { 4549 sendMessage(CMD_IP_CONFIGURATION_LOST); 4550 } 4551 } 4552 break; 4553 4554 case CMD_STATIC_IP_FAILURE: 4555 // Static configuration was invalid, or an error occurred in applying it. Give up. 4556 sendMessage(CMD_IP_CONFIGURATION_LOST); 4557 break; 4558 4559 case CMD_UPDATE_LINKPROPERTIES: 4560 // IP addresses, DNS servers, etc. changed. Act accordingly. 4561 if (wasProvisioned && !isProvisioned) { 4562 // We no longer have a usable network configuration. Disconnect. 4563 sendMessage(CMD_IP_CONFIGURATION_LOST); 4564 } else if (!wasProvisioned && isProvisioned) { 4565 // We have a usable IPv6-only config. Advance to connected state. 4566 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4567 } 4568 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4569 // If anything has changed and we're already connected, send out a notification. 4570 sendLinkConfigurationChangedBroadcast(); 4571 } 4572 break; 4573 } 4574 } 4575 4576 /** 4577 * Clears all our link properties. 4578 */ 4579 private void clearLinkProperties() { 4580 // Clear the link properties obtained from DHCP and netlink. 4581 synchronized (mDhcpResultsLock) { 4582 if (mDhcpResults != null) { 4583 mDhcpResults.clear(); 4584 } 4585 } 4586 mNetlinkTracker.clearLinkProperties(); 4587 if (mIpReachabilityMonitor != null) { 4588 mIpReachabilityMonitor.clearLinkProperties(); 4589 } 4590 4591 // Now clear the merged link properties. 4592 mLinkProperties.clear(); 4593 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4594 } 4595 4596 /** 4597 * try to update default route MAC address. 4598 */ 4599 private String updateDefaultRouteMacAddress(int timeout) { 4600 String address = null; 4601 for (RouteInfo route : mLinkProperties.getRoutes()) { 4602 if (route.isDefaultRoute() && route.hasGateway()) { 4603 InetAddress gateway = route.getGateway(); 4604 if (gateway instanceof Inet4Address) { 4605 if (PDBG) { 4606 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4607 + gateway.getHostAddress()); 4608 } 4609 address = macAddressFromRoute(gateway.getHostAddress()); 4610 /* The gateway's MAC address is known */ 4611 if ((address == null) && (timeout > 0)) { 4612 boolean reachable = false; 4613 try { 4614 reachable = gateway.isReachable(timeout); 4615 } catch (Exception e) { 4616 loge("updateDefaultRouteMacAddress exception reaching :" 4617 + gateway.getHostAddress()); 4618 4619 } finally { 4620 if (reachable == true) { 4621 4622 address = macAddressFromRoute(gateway.getHostAddress()); 4623 if (PDBG) { 4624 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4625 + gateway.getHostAddress() + " found " + address); 4626 } 4627 } 4628 } 4629 } 4630 if (address != null) { 4631 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4632 } 4633 } 4634 } 4635 } 4636 return address; 4637 } 4638 4639 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4640 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4641 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4642 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4643 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4644 } 4645 4646 private void sendRssiChangeBroadcast(final int newRssi) { 4647 try { 4648 mBatteryStats.noteWifiRssiChanged(newRssi); 4649 } catch (RemoteException e) { 4650 // Won't happen. 4651 } 4652 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4653 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4654 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4655 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4656 } 4657 4658 private void sendNetworkStateChangeBroadcast(String bssid) { 4659 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4660 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4661 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4662 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4663 if (bssid != null) 4664 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4665 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4666 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4667 // We no longer report MAC address to third-parties and our code does 4668 // not rely on this broadcast, so just send the default MAC address. 4669 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4670 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4671 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4672 } 4673 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4674 } 4675 4676 private WifiInfo getWiFiInfoForUid(int uid) { 4677 if (Binder.getCallingUid() == Process.myUid()) { 4678 return mWifiInfo; 4679 } 4680 4681 WifiInfo result = new WifiInfo(mWifiInfo); 4682 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4683 4684 IBinder binder = ServiceManager.getService("package"); 4685 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4686 4687 try { 4688 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4689 uid) == PackageManager.PERMISSION_GRANTED) { 4690 result.setMacAddress(mWifiInfo.getMacAddress()); 4691 } 4692 } catch (RemoteException e) { 4693 Log.e(TAG, "Error checking receiver permission", e); 4694 } 4695 4696 return result; 4697 } 4698 4699 private void sendLinkConfigurationChangedBroadcast() { 4700 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4701 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4702 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4703 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4704 } 4705 4706 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4707 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4708 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4709 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4710 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4711 } 4712 4713 /** 4714 * Record the detailed state of a network. 4715 * 4716 * @param state the new {@code DetailedState} 4717 */ 4718 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4719 boolean hidden = false; 4720 4721 if (linkDebouncing || isRoaming()) { 4722 // There is generally a confusion in the system about colluding 4723 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4724 // which leads to multiple confusion. 4725 // 4726 // If link is de-bouncing or roaming, we already have an IP address 4727 // as well we were connected and are doing L2 cycles of 4728 // reconnecting or renewing IP address to check that we still have it 4729 // This L2 link flapping should ne be reflected into the Network state 4730 // which is the state of the WiFi Network visible to Layer 3 and applications 4731 // Note that once debouncing and roaming are completed, we will 4732 // set the Network state to where it should be, or leave it as unchanged 4733 // 4734 hidden = true; 4735 } 4736 if (DBG) { 4737 log("setDetailed state, old =" 4738 + mNetworkInfo.getDetailedState() + " and new state=" + state 4739 + " hidden=" + hidden); 4740 } 4741 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4742 // Always indicate that SSID has changed 4743 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4744 if (DBG) { 4745 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4746 } 4747 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4748 sendNetworkStateChangeBroadcast(null); 4749 } 4750 } 4751 if (hidden == true) { 4752 return false; 4753 } 4754 4755 if (state != mNetworkInfo.getDetailedState()) { 4756 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4757 if (mNetworkAgent != null) { 4758 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4759 } 4760 sendNetworkStateChangeBroadcast(null); 4761 return true; 4762 } 4763 return false; 4764 } 4765 4766 private DetailedState getNetworkDetailedState() { 4767 return mNetworkInfo.getDetailedState(); 4768 } 4769 4770 private SupplicantState handleSupplicantStateChange(Message message) { 4771 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4772 SupplicantState state = stateChangeResult.state; 4773 // Supplicant state change 4774 // [31-13] Reserved for future use 4775 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4776 // 50023 supplicant_state_changed (custom|1|5) 4777 mWifiInfo.setSupplicantState(state); 4778 // Network id is only valid when we start connecting 4779 if (SupplicantState.isConnecting(state)) { 4780 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4781 } else { 4782 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4783 } 4784 4785 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4786 4787 if (mWhiteListedSsids != null 4788 && mWhiteListedSsids.length > 0 4789 && stateChangeResult.wifiSsid != null) { 4790 String SSID = stateChangeResult.wifiSsid.toString(); 4791 String currentSSID = mWifiInfo.getSSID(); 4792 if (SSID != null 4793 && currentSSID != null 4794 && !SSID.equals(WifiSsid.NONE)) { 4795 // Remove quote before comparing 4796 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4797 && SSID.charAt(SSID.length() - 1) == '"') 4798 { 4799 SSID = SSID.substring(1, SSID.length() - 1); 4800 } 4801 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4802 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4803 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4804 } 4805 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4806 lastConnectAttempt = System.currentTimeMillis(); 4807 targetWificonfiguration 4808 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4809 transitionTo(mRoamingState); 4810 } 4811 } 4812 } 4813 4814 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4815 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4816 4817 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4818 4819 return state; 4820 } 4821 4822 /** 4823 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4824 * using the interface, stopping DHCP & disabling interface 4825 */ 4826 private void handleNetworkDisconnect() { 4827 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4828 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4829 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4830 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4831 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4832 4833 4834 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4835 4836 stopDhcp(); 4837 4838 try { 4839 mNwService.clearInterfaceAddresses(mInterfaceName); 4840 mNwService.disableIpv6(mInterfaceName); 4841 } catch (Exception e) { 4842 loge("Failed to clear addresses or disable ipv6" + e); 4843 } 4844 4845 /* Reset data structures */ 4846 mBadLinkspeedcount = 0; 4847 mWifiInfo.reset(); 4848 linkDebouncing = false; 4849 /* Reset roaming parameters */ 4850 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4851 4852 /** 4853 * fullBandConnectedTimeIntervalMilli: 4854 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4855 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4856 * Initialize to sane value = 20 seconds 4857 */ 4858 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4859 4860 setNetworkDetailedState(DetailedState.DISCONNECTED); 4861 if (mNetworkAgent != null) { 4862 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4863 mNetworkAgent = null; 4864 } 4865 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4866 4867 /* Clear network properties */ 4868 clearLinkProperties(); 4869 4870 /* Cend event to CM & network change broadcast */ 4871 sendNetworkStateChangeBroadcast(mLastBssid); 4872 4873 /* Cancel auto roam requests */ 4874 autoRoamSetBSSID(mLastNetworkId, "any"); 4875 4876 mLastBssid = null; 4877 registerDisconnected(); 4878 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4879 } 4880 4881 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4882 /* Socket connection can be lost when we do a graceful shutdown 4883 * or when the driver is hung. Ensure supplicant is stopped here. 4884 */ 4885 if (killSupplicant) { 4886 mWifiMonitor.killSupplicant(mP2pSupported); 4887 } 4888 mWifiNative.closeSupplicantConnection(); 4889 sendSupplicantConnectionChangedBroadcast(false); 4890 setWifiState(WIFI_STATE_DISABLED); 4891 } 4892 4893 void handlePreDhcpSetup() { 4894 mDhcpActive = true; 4895 if (!mBluetoothConnectionActive) { 4896 /* 4897 * There are problems setting the Wi-Fi driver's power 4898 * mode to active when bluetooth coexistence mode is 4899 * enabled or sense. 4900 * <p> 4901 * We set Wi-Fi to active mode when 4902 * obtaining an IP address because we've found 4903 * compatibility issues with some routers with low power 4904 * mode. 4905 * <p> 4906 * In order for this active power mode to properly be set, 4907 * we disable coexistence mode until we're done with 4908 * obtaining an IP address. One exception is if we 4909 * are currently connected to a headset, since disabling 4910 * coexistence would interrupt that connection. 4911 */ 4912 // Disable the coexistence mode 4913 mWifiNative.setBluetoothCoexistenceMode( 4914 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4915 } 4916 4917 // Disable power save and suspend optimizations during DHCP 4918 // Note: The order here is important for now. Brcm driver changes 4919 // power settings when we control suspend mode optimizations. 4920 // TODO: Remove this comment when the driver is fixed. 4921 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4922 mWifiNative.setPowerSave(false); 4923 4924 // Update link layer stats 4925 getWifiLinkLayerStats(false); 4926 4927 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4928 Message msg = new Message(); 4929 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4930 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4931 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4932 msg.obj = mDhcpStateMachine; 4933 mWifiP2pChannel.sendMessage(msg); 4934 } 4935 4936 4937 private boolean useLegacyDhcpClient() { 4938 return Settings.Global.getInt( 4939 mContext.getContentResolver(), 4940 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4941 } 4942 4943 private void maybeInitDhcpStateMachine() { 4944 if (mDhcpStateMachine == null) { 4945 if (useLegacyDhcpClient()) { 4946 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4947 mContext, WifiStateMachine.this, mInterfaceName); 4948 } else { 4949 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4950 mContext, WifiStateMachine.this, mInterfaceName); 4951 } 4952 } 4953 } 4954 4955 void startDhcp() { 4956 maybeInitDhcpStateMachine(); 4957 mDhcpStateMachine.registerForPreDhcpNotification(); 4958 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4959 } 4960 4961 void renewDhcp() { 4962 maybeInitDhcpStateMachine(); 4963 mDhcpStateMachine.registerForPreDhcpNotification(); 4964 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4965 } 4966 4967 void stopDhcp() { 4968 if (mDhcpStateMachine != null) { 4969 /* In case we were in middle of DHCP operation restore back powermode */ 4970 handlePostDhcpSetup(); 4971 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4972 } 4973 } 4974 4975 void handlePostDhcpSetup() { 4976 /* Restore power save and suspend optimizations */ 4977 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4978 mWifiNative.setPowerSave(true); 4979 4980 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4981 4982 // Set the coexistence mode back to its default value 4983 mWifiNative.setBluetoothCoexistenceMode( 4984 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4985 4986 mDhcpActive = false; 4987 } 4988 4989 void connectScanningService() { 4990 4991 if (mWifiScanner == null) { 4992 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4993 } 4994 } 4995 4996 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4997 4998 if (PDBG) { 4999 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 5000 loge("link address " + dhcpResults.ipAddress); 5001 } 5002 5003 Inet4Address addr; 5004 synchronized (mDhcpResultsLock) { 5005 mDhcpResults = dhcpResults; 5006 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5007 } 5008 5009 if (isRoaming()) { 5010 int previousAddress = mWifiInfo.getIpAddress(); 5011 int newAddress = NetworkUtils.inetAddressToInt(addr); 5012 if (previousAddress != newAddress) { 5013 loge("handleIPv4Success, roaming and address changed" + 5014 mWifiInfo + " got: " + addr); 5015 } 5016 } 5017 mWifiInfo.setInetAddress(addr); 5018 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5019 updateLinkProperties(reason); 5020 } 5021 5022 private void handleSuccessfulIpConfiguration() { 5023 mLastSignalLevel = -1; // Force update of signal strength 5024 WifiConfiguration c = getCurrentWifiConfiguration(); 5025 if (c != null) { 5026 // Reset IP failure tracking 5027 c.numConnectionFailures = 0; 5028 5029 // Tell the framework whether the newly connected network is trusted or untrusted. 5030 updateCapabilities(c); 5031 } 5032 if (c != null) { 5033 ScanResult result = getCurrentScanResult(); 5034 if (result == null) { 5035 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5036 c.configKey()); 5037 } else { 5038 // Clear the per BSSID failure count 5039 result.numIpConfigFailures = 0; 5040 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5041 // any BSSID, even though it may already have a non zero ip failure count, 5042 // this will typically happen if the user walks away and come back to his arrea 5043 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5044 // in supplicant for a couple of hours or a day 5045 mWifiConfigStore.clearBssidBlacklist(); 5046 } 5047 } 5048 } 5049 5050 private void handleIPv4Failure(int reason) { 5051 synchronized(mDhcpResultsLock) { 5052 if (mDhcpResults != null) { 5053 mDhcpResults.clear(); 5054 } 5055 } 5056 if (PDBG) { 5057 loge("wifistatemachine handleIPv4Failure"); 5058 } 5059 updateLinkProperties(reason); 5060 } 5061 5062 private void handleIpConfigurationLost() { 5063 mWifiInfo.setInetAddress(null); 5064 mWifiInfo.setMeteredHint(false); 5065 5066 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5067 "DHCP FAILURE", mWifiInfo.getBSSID()); 5068 5069 /* DHCP times out after about 30 seconds, we do a 5070 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5071 */ 5072 mWifiNative.disconnect(); 5073 } 5074 5075 // TODO: De-duplicated this and handleIpConfigurationLost(). 5076 private void handleIpReachabilityLost() { 5077 // No need to be told about any additional neighbors that might also 5078 // become unreachable--quiet them now while we start disconnecting. 5079 if (mIpReachabilityMonitor != null) { 5080 mIpReachabilityMonitor.clearLinkProperties(); 5081 } 5082 5083 mWifiInfo.setInetAddress(null); 5084 mWifiInfo.setMeteredHint(false); 5085 5086 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5087 5088 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5089 mWifiNative.disconnect(); 5090 } 5091 5092 private int convertFrequencyToChannelNumber(int frequency) { 5093 if (frequency >= 2412 && frequency <= 2484) { 5094 return (frequency -2412) / 5 + 1; 5095 } else if (frequency >= 5170 && frequency <=5825) { 5096 //DFS is included 5097 return (frequency -5170) / 5 + 34; 5098 } else { 5099 return 0; 5100 } 5101 } 5102 5103 private int chooseApChannel(int apBand) { 5104 int apChannel; 5105 int[] channel; 5106 5107 if (apBand == 0) { 5108 //for 2.4GHz, we only set the AP at channel 1,6,11 5109 apChannel = 5 * mRandom.nextInt(3) + 1; 5110 } else { 5111 //5G without DFS 5112 channel = mWifiNative.getChannelsForBand(2); 5113 if (channel != null && channel.length > 0) { 5114 apChannel = channel[mRandom.nextInt(channel.length)]; 5115 apChannel = convertFrequencyToChannelNumber(apChannel); 5116 } else { 5117 Log.e(TAG, "SoftAp do not get available channel list"); 5118 apChannel = 0; 5119 } 5120 } 5121 5122 if(DBG) { 5123 Log.d(TAG, "SoftAp set on channel " + apChannel); 5124 } 5125 5126 return apChannel; 5127 } 5128 5129 5130 /* Current design is to not set the config on a running hostapd but instead 5131 * stop and start tethering when user changes config on a running access point 5132 * 5133 * TODO: Add control channel setup through hostapd that allows changing config 5134 * on a running daemon 5135 */ 5136 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5137 // set channel 5138 final WifiConfiguration config = new WifiConfiguration(configuration); 5139 5140 if (DBG) { 5141 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5142 } 5143 5144 //We need HAL support to set country code and get available channel list, if HAL is 5145 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5146 if (mWifiNative.isHalStarted()) { 5147 //set country code through HAL Here 5148 if (mSetCountryCode != null) { 5149 if (!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 5150 if (config.apBand != 0) { 5151 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5152 //countrycode is mandatory for 5GHz 5153 sendMessage(CMD_START_AP_FAILURE); 5154 return; 5155 } 5156 } 5157 } else { 5158 if (config.apBand != 0) { 5159 //countrycode is mandatory for 5GHz 5160 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5161 sendMessage(CMD_START_AP_FAILURE); 5162 return; 5163 } 5164 } 5165 5166 if (config.apChannel == 0) { 5167 config.apChannel = chooseApChannel(config.apBand); 5168 if (config.apChannel == 0) { 5169 //fail to get available channel 5170 sendMessage(CMD_START_AP_FAILURE); 5171 return; 5172 } 5173 } 5174 //turn off interface 5175 if (!mWifiNative.toggleInterface(0)) { 5176 sendMessage(CMD_START_AP_FAILURE); 5177 return; 5178 } 5179 } else { 5180 //for some old device, wifiHal may not be supported 5181 config.apChannel = 0; 5182 config.apChannel = 6; 5183 } 5184 // Start hostapd on a separate thread 5185 new Thread(new Runnable() { 5186 public void run() { 5187 try { 5188 mNwService.startAccessPoint(config, mInterfaceName); 5189 } catch (Exception e) { 5190 loge("Exception in softap start " + e); 5191 try { 5192 mNwService.stopAccessPoint(mInterfaceName); 5193 mNwService.startAccessPoint(config, mInterfaceName); 5194 } catch (Exception e1) { 5195 loge("Exception in softap re-start " + e1); 5196 sendMessage(CMD_START_AP_FAILURE); 5197 return; 5198 } 5199 } 5200 if (DBG) log("Soft AP start successful"); 5201 sendMessage(CMD_START_AP_SUCCESS); 5202 } 5203 }).start(); 5204 } 5205 5206 /* 5207 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5208 * so as to record MAC address of default gateway. 5209 **/ 5210 private String macAddressFromRoute(String ipAddress) { 5211 String macAddress = null; 5212 BufferedReader reader = null; 5213 try { 5214 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5215 5216 // Skip over the line bearing colum titles 5217 String line = reader.readLine(); 5218 5219 while ((line = reader.readLine()) != null) { 5220 String[] tokens = line.split("[ ]+"); 5221 if (tokens.length < 6) { 5222 continue; 5223 } 5224 5225 // ARP column format is 5226 // Address HWType HWAddress Flags Mask IFace 5227 String ip = tokens[0]; 5228 String mac = tokens[3]; 5229 5230 if (ipAddress.equals(ip)) { 5231 macAddress = mac; 5232 break; 5233 } 5234 } 5235 5236 if (macAddress == null) { 5237 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5238 "/proc/net/arp"); 5239 } 5240 5241 } catch (FileNotFoundException e) { 5242 loge("Could not open /proc/net/arp to lookup mac address"); 5243 } catch (IOException e) { 5244 loge("Could not read /proc/net/arp to lookup mac address"); 5245 } finally { 5246 try { 5247 if (reader != null) { 5248 reader.close(); 5249 } 5250 } catch (IOException e) { 5251 // Do nothing 5252 } 5253 } 5254 return macAddress; 5255 5256 } 5257 5258 private class WifiNetworkFactory extends NetworkFactory { 5259 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5260 super(l, c, TAG, f); 5261 } 5262 5263 @Override 5264 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5265 ++mConnectionRequests; 5266 } 5267 5268 @Override 5269 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5270 --mConnectionRequests; 5271 } 5272 5273 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5274 pw.println("mConnectionRequests " + mConnectionRequests); 5275 } 5276 5277 } 5278 5279 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5280 private int mUntrustedReqCount; 5281 5282 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5283 super(l, c, tag, f); 5284 } 5285 5286 @Override 5287 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5288 if (!networkRequest.networkCapabilities.hasCapability( 5289 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5290 if (++mUntrustedReqCount == 1) { 5291 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5292 } 5293 } 5294 } 5295 5296 @Override 5297 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5298 if (!networkRequest.networkCapabilities.hasCapability( 5299 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5300 if (--mUntrustedReqCount == 0) { 5301 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5302 } 5303 } 5304 } 5305 5306 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5307 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5308 } 5309 } 5310 5311 void maybeRegisterNetworkFactory() { 5312 if (mNetworkFactory == null) { 5313 checkAndSetConnectivityInstance(); 5314 if (mCm != null) { 5315 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5316 NETWORKTYPE, mNetworkCapabilitiesFilter); 5317 mNetworkFactory.setScoreFilter(60); 5318 mNetworkFactory.register(); 5319 5320 // We can't filter untrusted network in the capabilities filter because a trusted 5321 // network would still satisfy a request that accepts untrusted ones. 5322 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5323 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5324 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5325 mUntrustedNetworkFactory.register(); 5326 } 5327 } 5328 } 5329 5330 /******************************************************** 5331 * HSM states 5332 *******************************************************/ 5333 5334 class DefaultState extends State { 5335 @Override 5336 public boolean processMessage(Message message) { 5337 logStateAndMessage(message, getClass().getSimpleName()); 5338 5339 switch (message.what) { 5340 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5341 AsyncChannel ac = (AsyncChannel) message.obj; 5342 if (ac == mWifiP2pChannel) { 5343 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5344 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5345 } else { 5346 loge("WifiP2pService connection failure, error=" + message.arg1); 5347 } 5348 } else { 5349 loge("got HALF_CONNECTED for unknown channel"); 5350 } 5351 break; 5352 } 5353 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5354 AsyncChannel ac = (AsyncChannel) message.obj; 5355 if (ac == mWifiP2pChannel) { 5356 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5357 //TODO: Re-establish connection to state machine after a delay 5358 // mWifiP2pChannel.connect(mContext, getHandler(), 5359 // mWifiP2pManager.getMessenger()); 5360 } 5361 break; 5362 } 5363 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5364 mBluetoothConnectionActive = (message.arg1 != 5365 BluetoothAdapter.STATE_DISCONNECTED); 5366 break; 5367 /* Synchronous call returns */ 5368 case CMD_PING_SUPPLICANT: 5369 case CMD_ENABLE_NETWORK: 5370 case CMD_ADD_OR_UPDATE_NETWORK: 5371 case CMD_REMOVE_NETWORK: 5372 case CMD_SAVE_CONFIG: 5373 replyToMessage(message, message.what, FAILURE); 5374 break; 5375 case CMD_GET_CAPABILITY_FREQ: 5376 replyToMessage(message, message.what, null); 5377 break; 5378 case CMD_GET_CONFIGURED_NETWORKS: 5379 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5380 break; 5381 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5382 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5383 break; 5384 case CMD_ENABLE_RSSI_POLL: 5385 mEnableRssiPolling = (message.arg1 == 1); 5386 break; 5387 case CMD_SET_HIGH_PERF_MODE: 5388 if (message.arg1 == 1) { 5389 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5390 } else { 5391 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5392 } 5393 break; 5394 case CMD_BOOT_COMPLETED: 5395 maybeRegisterNetworkFactory(); 5396 break; 5397 case CMD_SCREEN_STATE_CHANGED: 5398 handleScreenStateChanged(message.arg1 != 0); 5399 break; 5400 /* Discard */ 5401 case CMD_START_SCAN: 5402 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5403 break; 5404 case CMD_START_SUPPLICANT: 5405 case CMD_STOP_SUPPLICANT: 5406 case CMD_STOP_SUPPLICANT_FAILED: 5407 case CMD_START_DRIVER: 5408 case CMD_STOP_DRIVER: 5409 case CMD_DELAYED_STOP_DRIVER: 5410 case CMD_DRIVER_START_TIMED_OUT: 5411 case CMD_START_AP: 5412 case CMD_START_AP_SUCCESS: 5413 case CMD_START_AP_FAILURE: 5414 case CMD_STOP_AP: 5415 case CMD_TETHER_STATE_CHANGE: 5416 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5417 case CMD_DISCONNECT: 5418 case CMD_RECONNECT: 5419 case CMD_REASSOCIATE: 5420 case CMD_RELOAD_TLS_AND_RECONNECT: 5421 case WifiMonitor.SUP_CONNECTION_EVENT: 5422 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5423 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5424 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5425 case WifiMonitor.SCAN_RESULTS_EVENT: 5426 case WifiMonitor.SCAN_FAILED_EVENT: 5427 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5428 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5429 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5430 case WifiMonitor.WPS_OVERLAP_EVENT: 5431 case CMD_BLACKLIST_NETWORK: 5432 case CMD_CLEAR_BLACKLIST: 5433 case CMD_SET_OPERATIONAL_MODE: 5434 case CMD_SET_COUNTRY_CODE: 5435 case CMD_SET_FREQUENCY_BAND: 5436 case CMD_RSSI_POLL: 5437 case CMD_ENABLE_ALL_NETWORKS: 5438 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5439 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5440 /* Handled by WifiApConfigStore */ 5441 case CMD_SET_AP_CONFIG: 5442 case CMD_SET_AP_CONFIG_COMPLETED: 5443 case CMD_REQUEST_AP_CONFIG: 5444 case CMD_RESPONSE_AP_CONFIG: 5445 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5446 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5447 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5448 case CMD_DISABLE_P2P_RSP: 5449 case WifiMonitor.SUP_REQUEST_IDENTITY: 5450 case CMD_TEST_NETWORK_DISCONNECT: 5451 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5452 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5453 case CMD_TARGET_BSSID: 5454 case CMD_AUTO_CONNECT: 5455 case CMD_AUTO_ROAM: 5456 case CMD_AUTO_SAVE_NETWORK: 5457 case CMD_ASSOCIATED_BSSID: 5458 case CMD_UNWANTED_NETWORK: 5459 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5460 case CMD_ROAM_WATCHDOG_TIMER: 5461 case CMD_DISABLE_EPHEMERAL_NETWORK: 5462 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5463 case CMD_STARTED_PNO_DBG: 5464 case CMD_STARTED_GSCAN_DBG: 5465 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5466 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5467 break; 5468 case DhcpStateMachine.CMD_ON_QUIT: 5469 mDhcpStateMachine = null; 5470 break; 5471 case CMD_SET_SUSPEND_OPT_ENABLED: 5472 if (message.arg1 == 1) { 5473 mSuspendWakeLock.release(); 5474 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5475 } else { 5476 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5477 } 5478 break; 5479 case WifiMonitor.DRIVER_HUNG_EVENT: 5480 setSupplicantRunning(false); 5481 setSupplicantRunning(true); 5482 break; 5483 case WifiManager.CONNECT_NETWORK: 5484 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5485 WifiManager.BUSY); 5486 break; 5487 case WifiManager.FORGET_NETWORK: 5488 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5489 WifiManager.BUSY); 5490 break; 5491 case WifiManager.SAVE_NETWORK: 5492 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5493 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5494 WifiManager.BUSY); 5495 break; 5496 case WifiManager.START_WPS: 5497 replyToMessage(message, WifiManager.WPS_FAILED, 5498 WifiManager.BUSY); 5499 break; 5500 case WifiManager.CANCEL_WPS: 5501 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5502 WifiManager.BUSY); 5503 break; 5504 case WifiManager.DISABLE_NETWORK: 5505 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5506 WifiManager.BUSY); 5507 break; 5508 case WifiManager.RSSI_PKTCNT_FETCH: 5509 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5510 WifiManager.BUSY); 5511 break; 5512 case CMD_GET_SUPPORTED_FEATURES: 5513 int featureSet = WifiNative.getSupportedFeatureSet(); 5514 replyToMessage(message, message.what, featureSet); 5515 break; 5516 case CMD_FIRMWARE_ALERT: 5517 if (mWifiLogger != null) { 5518 byte[] buffer = (byte[])message.obj; 5519 mWifiLogger.captureAlertData(message.arg1, buffer); 5520 } 5521 break; 5522 case CMD_GET_LINK_LAYER_STATS: 5523 // Not supported hence reply with error message 5524 replyToMessage(message, message.what, null); 5525 break; 5526 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5527 NetworkInfo info = (NetworkInfo) message.obj; 5528 mP2pConnected.set(info.isConnected()); 5529 break; 5530 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5531 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5532 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5533 break; 5534 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5535 case CMD_UPDATE_LINKPROPERTIES: 5536 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5537 break; 5538 case CMD_GET_MATCHING_CONFIG: 5539 replyToMessage(message, message.what); 5540 break; 5541 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5542 case CMD_IP_CONFIGURATION_LOST: 5543 case CMD_IP_REACHABILITY_LOST: 5544 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5545 break; 5546 case CMD_GET_CONNECTION_STATISTICS: 5547 replyToMessage(message, message.what, mWifiConnectionStatistics); 5548 break; 5549 case CMD_REMOVE_APP_CONFIGURATIONS: 5550 deferMessage(message); 5551 break; 5552 case CMD_REMOVE_USER_CONFIGURATIONS: 5553 deferMessage(message); 5554 break; 5555 default: 5556 loge("Error! unhandled message" + message); 5557 break; 5558 } 5559 return HANDLED; 5560 } 5561 } 5562 5563 class InitialState extends State { 5564 @Override 5565 public void enter() { 5566 WifiNative.stopHal(); 5567 mWifiNative.unloadDriver(); 5568 if (mWifiP2pChannel == null) { 5569 mWifiP2pChannel = new AsyncChannel(); 5570 mWifiP2pChannel.connect(mContext, getHandler(), 5571 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5572 } 5573 5574 if (mWifiApConfigChannel == null) { 5575 mWifiApConfigChannel = new AsyncChannel(); 5576 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5577 mContext, getHandler()); 5578 wifiApConfigStore.loadApConfiguration(); 5579 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5580 wifiApConfigStore.getMessenger()); 5581 } 5582 5583 if (mWifiConfigStore.enableHalBasedPno.get()) { 5584 // make sure developer Settings are in sync with the config option 5585 mHalBasedPnoEnableInDevSettings = true; 5586 } 5587 } 5588 @Override 5589 public boolean processMessage(Message message) { 5590 logStateAndMessage(message, getClass().getSimpleName()); 5591 switch (message.what) { 5592 case CMD_START_SUPPLICANT: 5593 if (mWifiNative.loadDriver()) { 5594 try { 5595 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5596 } catch (Exception e) { 5597 loge("Failed to reload STA firmware " + e); 5598 // Continue 5599 } 5600 5601 try { 5602 // A runtime crash can leave the interface up and 5603 // IP addresses configured, and this affects 5604 // connectivity when supplicant starts up. 5605 // Ensure interface is down and we have no IP 5606 // addresses before a supplicant start. 5607 mNwService.setInterfaceDown(mInterfaceName); 5608 mNwService.clearInterfaceAddresses(mInterfaceName); 5609 5610 // Set privacy extensions 5611 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5612 5613 // IPv6 is enabled only as long as access point is connected since: 5614 // - IPv6 addresses and routes stick around after disconnection 5615 // - kernel is unaware when connected and fails to start IPv6 negotiation 5616 // - kernel can start autoconfiguration when 802.1x is not complete 5617 mNwService.disableIpv6(mInterfaceName); 5618 } catch (RemoteException re) { 5619 loge("Unable to change interface settings: " + re); 5620 } catch (IllegalStateException ie) { 5621 loge("Unable to change interface settings: " + ie); 5622 } 5623 5624 /* Stop a running supplicant after a runtime restart 5625 * Avoids issues with drivers that do not handle interface down 5626 * on a running supplicant properly. 5627 */ 5628 mWifiMonitor.killSupplicant(mP2pSupported); 5629 5630 if (WifiNative.startHal() == false) { 5631 /* starting HAL is optional */ 5632 loge("Failed to start HAL"); 5633 } 5634 5635 if (mWifiNative.startSupplicant(mP2pSupported)) { 5636 setWifiState(WIFI_STATE_ENABLING); 5637 if (DBG) log("Supplicant start successful"); 5638 mWifiMonitor.startMonitoring(); 5639 transitionTo(mSupplicantStartingState); 5640 } else { 5641 loge("Failed to start supplicant!"); 5642 } 5643 } else { 5644 loge("Failed to load driver"); 5645 } 5646 break; 5647 case CMD_START_AP: 5648 if (mWifiNative.loadDriver() == false) { 5649 loge("Failed to load driver for softap"); 5650 } else { 5651 5652 if (WifiNative.startHal() == false) { 5653 /* starting HAL is optional */ 5654 loge("Failed to start HAL"); 5655 } 5656 5657 setWifiApState(WIFI_AP_STATE_ENABLING); 5658 transitionTo(mSoftApStartingState); 5659 } 5660 break; 5661 default: 5662 return NOT_HANDLED; 5663 } 5664 return HANDLED; 5665 } 5666 } 5667 5668 class SupplicantStartingState extends State { 5669 private void initializeWpsDetails() { 5670 String detail; 5671 detail = SystemProperties.get("ro.product.name", ""); 5672 if (!mWifiNative.setDeviceName(detail)) { 5673 loge("Failed to set device name " + detail); 5674 } 5675 detail = SystemProperties.get("ro.product.manufacturer", ""); 5676 if (!mWifiNative.setManufacturer(detail)) { 5677 loge("Failed to set manufacturer " + detail); 5678 } 5679 detail = SystemProperties.get("ro.product.model", ""); 5680 if (!mWifiNative.setModelName(detail)) { 5681 loge("Failed to set model name " + detail); 5682 } 5683 detail = SystemProperties.get("ro.product.model", ""); 5684 if (!mWifiNative.setModelNumber(detail)) { 5685 loge("Failed to set model number " + detail); 5686 } 5687 detail = SystemProperties.get("ro.serialno", ""); 5688 if (!mWifiNative.setSerialNumber(detail)) { 5689 loge("Failed to set serial number " + detail); 5690 } 5691 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5692 loge("Failed to set WPS config methods"); 5693 } 5694 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5695 loge("Failed to set primary device type " + mPrimaryDeviceType); 5696 } 5697 } 5698 5699 @Override 5700 public boolean processMessage(Message message) { 5701 logStateAndMessage(message, getClass().getSimpleName()); 5702 5703 switch(message.what) { 5704 case WifiMonitor.SUP_CONNECTION_EVENT: 5705 if (DBG) log("Supplicant connection established"); 5706 setWifiState(WIFI_STATE_ENABLED); 5707 mSupplicantRestartCount = 0; 5708 /* Reset the supplicant state to indicate the supplicant 5709 * state is not known at this time */ 5710 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5711 /* Initialize data structures */ 5712 mLastBssid = null; 5713 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5714 mLastSignalLevel = -1; 5715 5716 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5717 mWifiNative.enableSaveConfig(); 5718 mWifiConfigStore.loadAndEnableAllNetworks(); 5719 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5720 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5721 } 5722 initializeWpsDetails(); 5723 5724 sendSupplicantConnectionChangedBroadcast(true); 5725 transitionTo(mDriverStartedState); 5726 break; 5727 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5728 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5729 loge("Failed to setup control channel, restart supplicant"); 5730 mWifiMonitor.killSupplicant(mP2pSupported); 5731 transitionTo(mInitialState); 5732 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5733 } else { 5734 loge("Failed " + mSupplicantRestartCount + 5735 " times to start supplicant, unload driver"); 5736 mSupplicantRestartCount = 0; 5737 setWifiState(WIFI_STATE_UNKNOWN); 5738 transitionTo(mInitialState); 5739 } 5740 break; 5741 case CMD_START_SUPPLICANT: 5742 case CMD_STOP_SUPPLICANT: 5743 case CMD_START_AP: 5744 case CMD_STOP_AP: 5745 case CMD_START_DRIVER: 5746 case CMD_STOP_DRIVER: 5747 case CMD_SET_OPERATIONAL_MODE: 5748 case CMD_SET_COUNTRY_CODE: 5749 case CMD_SET_FREQUENCY_BAND: 5750 case CMD_START_PACKET_FILTERING: 5751 case CMD_STOP_PACKET_FILTERING: 5752 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5753 deferMessage(message); 5754 break; 5755 default: 5756 return NOT_HANDLED; 5757 } 5758 return HANDLED; 5759 } 5760 } 5761 5762 class SupplicantStartedState extends State { 5763 @Override 5764 public void enter() { 5765 /* Wifi is available as long as we have a connection to supplicant */ 5766 mNetworkInfo.setIsAvailable(true); 5767 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5768 5769 int defaultInterval = mContext.getResources().getInteger( 5770 R.integer.config_wifi_supplicant_scan_interval); 5771 5772 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5773 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5774 defaultInterval); 5775 5776 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5777 mWifiNative.setExternalSim(true); 5778 5779 /* turn on use of DFS channels */ 5780 WifiNative.setDfsFlag(true); 5781 5782 /* set country code */ 5783 setCountryCode(); 5784 5785 setRandomMacOui(); 5786 mWifiNative.enableAutoConnect(false); 5787 } 5788 5789 @Override 5790 public boolean processMessage(Message message) { 5791 logStateAndMessage(message, getClass().getSimpleName()); 5792 5793 switch(message.what) { 5794 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5795 if (mP2pSupported) { 5796 transitionTo(mWaitForP2pDisableState); 5797 } else { 5798 transitionTo(mSupplicantStoppingState); 5799 } 5800 break; 5801 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5802 loge("Connection lost, restart supplicant"); 5803 handleSupplicantConnectionLoss(true); 5804 handleNetworkDisconnect(); 5805 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5806 if (mP2pSupported) { 5807 transitionTo(mWaitForP2pDisableState); 5808 } else { 5809 transitionTo(mInitialState); 5810 } 5811 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5812 break; 5813 case WifiMonitor.SCAN_RESULTS_EVENT: 5814 case WifiMonitor.SCAN_FAILED_EVENT: 5815 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5816 closeRadioScanStats(); 5817 noteScanEnd(); 5818 setScanResults(); 5819 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5820 /* Just updated results from full scan, let apps know about this */ 5821 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5822 sendScanResultsAvailableBroadcast(scanSucceeded); 5823 } 5824 mSendScanResultsBroadcast = false; 5825 mIsScanOngoing = false; 5826 mIsFullScanOngoing = false; 5827 if (mBufferedScanMsg.size() > 0) 5828 sendMessage(mBufferedScanMsg.remove()); 5829 break; 5830 case CMD_PING_SUPPLICANT: 5831 boolean ok = mWifiNative.ping(); 5832 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5833 break; 5834 case CMD_GET_CAPABILITY_FREQ: 5835 String freqs = mWifiNative.getFreqCapability(); 5836 replyToMessage(message, message.what, freqs); 5837 break; 5838 case CMD_START_AP: 5839 /* Cannot start soft AP while in client mode */ 5840 loge("Failed to start soft AP with a running supplicant"); 5841 setWifiApState(WIFI_AP_STATE_FAILED); 5842 break; 5843 case CMD_SET_OPERATIONAL_MODE: 5844 mOperationalMode = message.arg1; 5845 mWifiConfigStore. 5846 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5847 break; 5848 case CMD_TARGET_BSSID: 5849 // Trying to associate to this BSSID 5850 if (message.obj != null) { 5851 mTargetRoamBSSID = (String) message.obj; 5852 } 5853 break; 5854 case CMD_GET_LINK_LAYER_STATS: 5855 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5856 if (stats == null) { 5857 // When firmware doesnt support link layer stats, return an empty object 5858 stats = new WifiLinkLayerStats(); 5859 } 5860 replyToMessage(message, message.what, stats); 5861 break; 5862 case CMD_SET_COUNTRY_CODE: 5863 String country = (String) message.obj; 5864 5865 final boolean persist = (message.arg2 == 1); 5866 final int sequence = message.arg1; 5867 5868 if (sequence != mCountryCodeSequence.get()) { 5869 if (DBG) log("set country code ignored due to sequnce num"); 5870 break; 5871 } 5872 if (DBG) log("set country code " + country); 5873 country = country.toUpperCase(Locale.ROOT); 5874 5875 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5876 if (mWifiNative.setCountryCode(country)) { 5877 mDriverSetCountryCode = country; 5878 } else { 5879 loge("Failed to set country code " + country); 5880 } 5881 } 5882 5883 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5884 break; 5885 default: 5886 return NOT_HANDLED; 5887 } 5888 return HANDLED; 5889 } 5890 5891 @Override 5892 public void exit() { 5893 mNetworkInfo.setIsAvailable(false); 5894 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5895 } 5896 } 5897 5898 class SupplicantStoppingState extends State { 5899 @Override 5900 public void enter() { 5901 /* Send any reset commands to supplicant before shutting it down */ 5902 handleNetworkDisconnect(); 5903 if (mDhcpStateMachine != null) { 5904 mDhcpStateMachine.doQuit(); 5905 } 5906 5907 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5908 if (suppState == null) suppState = "unknown"; 5909 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5910 if (p2pSuppState == null) p2pSuppState = "unknown"; 5911 5912 loge("SupplicantStoppingState: stopSupplicant " 5913 + " init.svc.wpa_supplicant=" + suppState 5914 + " init.svc.p2p_supplicant=" + p2pSuppState); 5915 mWifiMonitor.stopSupplicant(); 5916 5917 /* Send ourselves a delayed message to indicate failure after a wait time */ 5918 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5919 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5920 setWifiState(WIFI_STATE_DISABLING); 5921 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5922 } 5923 @Override 5924 public boolean processMessage(Message message) { 5925 logStateAndMessage(message, getClass().getSimpleName()); 5926 5927 switch(message.what) { 5928 case WifiMonitor.SUP_CONNECTION_EVENT: 5929 loge("Supplicant connection received while stopping"); 5930 break; 5931 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5932 if (DBG) log("Supplicant connection lost"); 5933 handleSupplicantConnectionLoss(false); 5934 transitionTo(mInitialState); 5935 break; 5936 case CMD_STOP_SUPPLICANT_FAILED: 5937 if (message.arg1 == mSupplicantStopFailureToken) { 5938 loge("Timed out on a supplicant stop, kill and proceed"); 5939 handleSupplicantConnectionLoss(true); 5940 transitionTo(mInitialState); 5941 } 5942 break; 5943 case CMD_START_SUPPLICANT: 5944 case CMD_STOP_SUPPLICANT: 5945 case CMD_START_AP: 5946 case CMD_STOP_AP: 5947 case CMD_START_DRIVER: 5948 case CMD_STOP_DRIVER: 5949 case CMD_SET_OPERATIONAL_MODE: 5950 case CMD_SET_COUNTRY_CODE: 5951 case CMD_SET_FREQUENCY_BAND: 5952 case CMD_START_PACKET_FILTERING: 5953 case CMD_STOP_PACKET_FILTERING: 5954 deferMessage(message); 5955 break; 5956 default: 5957 return NOT_HANDLED; 5958 } 5959 return HANDLED; 5960 } 5961 } 5962 5963 class DriverStartingState extends State { 5964 private int mTries; 5965 @Override 5966 public void enter() { 5967 mTries = 1; 5968 /* Send ourselves a delayed message to start driver a second time */ 5969 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5970 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5971 } 5972 @Override 5973 public boolean processMessage(Message message) { 5974 logStateAndMessage(message, getClass().getSimpleName()); 5975 5976 switch(message.what) { 5977 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5978 SupplicantState state = handleSupplicantStateChange(message); 5979 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5980 * a state that indicates driver has started, it is ready to 5981 * receive driver commands 5982 */ 5983 if (SupplicantState.isDriverActive(state)) { 5984 transitionTo(mDriverStartedState); 5985 } 5986 break; 5987 case CMD_DRIVER_START_TIMED_OUT: 5988 if (message.arg1 == mDriverStartToken) { 5989 if (mTries >= 2) { 5990 loge("Failed to start driver after " + mTries); 5991 transitionTo(mDriverStoppedState); 5992 } else { 5993 loge("Driver start failed, retrying"); 5994 mWakeLock.acquire(); 5995 mWifiNative.startDriver(); 5996 mWakeLock.release(); 5997 5998 ++mTries; 5999 /* Send ourselves a delayed message to start driver again */ 6000 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6001 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6002 } 6003 } 6004 break; 6005 /* Queue driver commands & connection events */ 6006 case CMD_START_DRIVER: 6007 case CMD_STOP_DRIVER: 6008 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6009 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6010 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6011 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6012 case WifiMonitor.WPS_OVERLAP_EVENT: 6013 case CMD_SET_COUNTRY_CODE: 6014 case CMD_SET_FREQUENCY_BAND: 6015 case CMD_START_PACKET_FILTERING: 6016 case CMD_STOP_PACKET_FILTERING: 6017 case CMD_START_SCAN: 6018 case CMD_DISCONNECT: 6019 case CMD_REASSOCIATE: 6020 case CMD_RECONNECT: 6021 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6022 deferMessage(message); 6023 break; 6024 case WifiMonitor.SCAN_RESULTS_EVENT: 6025 case WifiMonitor.SCAN_FAILED_EVENT: 6026 // Loose scan results obtained in Driver Starting state, they can only confuse 6027 // the state machine 6028 break; 6029 default: 6030 return NOT_HANDLED; 6031 } 6032 return HANDLED; 6033 } 6034 } 6035 6036 class DriverStartedState extends State { 6037 @Override 6038 public void enter() { 6039 6040 if (PDBG) { 6041 loge("DriverStartedState enter"); 6042 } 6043 6044 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6045 mIsRunning = true; 6046 mInDelayedStop = false; 6047 mDelayedStopCounter++; 6048 updateBatteryWorkSource(null); 6049 /** 6050 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6051 * When this mode is on, some of the low-level scan parameters used by the 6052 * driver are changed to reduce interference with bluetooth 6053 */ 6054 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6055 /* set frequency band of operation */ 6056 setFrequencyBand(); 6057 /* initialize network state */ 6058 setNetworkDetailedState(DetailedState.DISCONNECTED); 6059 6060 /* Remove any filtering on Multicast v6 at start */ 6061 mWifiNative.stopFilteringMulticastV6Packets(); 6062 6063 /* Reset Multicast v4 filtering state */ 6064 if (mFilteringMulticastV4Packets.get()) { 6065 mWifiNative.startFilteringMulticastV4Packets(); 6066 } else { 6067 mWifiNative.stopFilteringMulticastV4Packets(); 6068 } 6069 6070 mDhcpActive = false; 6071 6072 if (mOperationalMode != CONNECT_MODE) { 6073 mWifiNative.disconnect(); 6074 mWifiConfigStore.disableAllNetworks(); 6075 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6076 setWifiState(WIFI_STATE_DISABLED); 6077 } 6078 transitionTo(mScanModeState); 6079 } else { 6080 6081 // Status pulls in the current supplicant state and network connection state 6082 // events over the monitor connection. This helps framework sync up with 6083 // current supplicant state 6084 // TODO: actually check th supplicant status string and make sure the supplicant 6085 // is in disconnecte4d state. 6086 mWifiNative.status(); 6087 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6088 transitionTo(mDisconnectedState); 6089 transitionTo(mDisconnectedState); 6090 } 6091 6092 // We may have missed screen update at boot 6093 if (mScreenBroadcastReceived.get() == false) { 6094 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6095 Context.POWER_SERVICE); 6096 handleScreenStateChanged(powerManager.isScreenOn()); 6097 } else { 6098 // Set the right suspend mode settings 6099 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6100 && mUserWantsSuspendOpt.get()); 6101 } 6102 mWifiNative.setPowerSave(true); 6103 6104 if (mP2pSupported) { 6105 if (mOperationalMode == CONNECT_MODE) { 6106 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6107 } else { 6108 // P2P statemachine starts in disabled state, and is not enabled until 6109 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6110 // keep it disabled. 6111 } 6112 } 6113 6114 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6115 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6116 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6117 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6118 6119 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6120 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6121 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6122 mHalBasedPnoDriverSupported = true; 6123 } 6124 6125 // Enable link layer stats gathering 6126 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6127 6128 if (PDBG) { 6129 loge("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6130 + " feature=" + mHalFeatureSet); 6131 } 6132 } 6133 6134 @Override 6135 public boolean processMessage(Message message) { 6136 logStateAndMessage(message, getClass().getSimpleName()); 6137 6138 switch(message.what) { 6139 case CMD_START_SCAN: 6140 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6141 break; 6142 case CMD_SET_FREQUENCY_BAND: 6143 int band = message.arg1; 6144 if (DBG) log("set frequency band " + band); 6145 if (mWifiNative.setBand(band)) { 6146 6147 if (PDBG) loge("did set frequency band " + band); 6148 6149 mFrequencyBand.set(band); 6150 // Flush old data - like scan results 6151 mWifiNative.bssFlush(); 6152 // Fetch the latest scan results when frequency band is set 6153// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6154 6155 if (PDBG) loge("done set frequency band " + band); 6156 6157 } else { 6158 loge("Failed to set frequency band " + band); 6159 } 6160 break; 6161 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6162 mBluetoothConnectionActive = (message.arg1 != 6163 BluetoothAdapter.STATE_DISCONNECTED); 6164 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6165 break; 6166 case CMD_STOP_DRIVER: 6167 int mode = message.arg1; 6168 6169 /* Already doing a delayed stop */ 6170 if (mInDelayedStop) { 6171 if (DBG) log("Already in delayed stop"); 6172 break; 6173 } 6174 /* disconnect right now, but leave the driver running for a bit */ 6175 mWifiConfigStore.disableAllNetworks(); 6176 6177 mInDelayedStop = true; 6178 mDelayedStopCounter++; 6179 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6180 6181 /* send regular delayed shut down */ 6182 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6183 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 6184 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6185 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6186 DRIVER_STOP_REQUEST, driverStopIntent, 6187 PendingIntent.FLAG_UPDATE_CURRENT); 6188 6189 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6190 + mDriverStopDelayMs, mDriverStopIntent); 6191 break; 6192 case CMD_START_DRIVER: 6193 if (mInDelayedStop) { 6194 mInDelayedStop = false; 6195 mDelayedStopCounter++; 6196 mAlarmManager.cancel(mDriverStopIntent); 6197 if (DBG) log("Delayed stop ignored due to start"); 6198 if (mOperationalMode == CONNECT_MODE) { 6199 mWifiConfigStore.enableAllNetworks(); 6200 } 6201 } 6202 break; 6203 case CMD_DELAYED_STOP_DRIVER: 6204 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6205 if (message.arg1 != mDelayedStopCounter) break; 6206 if (getCurrentState() != mDisconnectedState) { 6207 mWifiNative.disconnect(); 6208 handleNetworkDisconnect(); 6209 } 6210 mWakeLock.acquire(); 6211 mWifiNative.stopDriver(); 6212 mWakeLock.release(); 6213 if (mP2pSupported) { 6214 transitionTo(mWaitForP2pDisableState); 6215 } else { 6216 transitionTo(mDriverStoppingState); 6217 } 6218 break; 6219 case CMD_START_PACKET_FILTERING: 6220 if (message.arg1 == MULTICAST_V6) { 6221 mWifiNative.startFilteringMulticastV6Packets(); 6222 } else if (message.arg1 == MULTICAST_V4) { 6223 mWifiNative.startFilteringMulticastV4Packets(); 6224 } else { 6225 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6226 } 6227 break; 6228 case CMD_STOP_PACKET_FILTERING: 6229 if (message.arg1 == MULTICAST_V6) { 6230 mWifiNative.stopFilteringMulticastV6Packets(); 6231 } else if (message.arg1 == MULTICAST_V4) { 6232 mWifiNative.stopFilteringMulticastV4Packets(); 6233 } else { 6234 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6235 } 6236 break; 6237 case CMD_SET_SUSPEND_OPT_ENABLED: 6238 if (message.arg1 == 1) { 6239 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6240 mSuspendWakeLock.release(); 6241 } else { 6242 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6243 } 6244 break; 6245 case CMD_SET_HIGH_PERF_MODE: 6246 if (message.arg1 == 1) { 6247 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6248 } else { 6249 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6250 } 6251 break; 6252 case CMD_ENABLE_TDLS: 6253 if (message.obj != null) { 6254 String remoteAddress = (String) message.obj; 6255 boolean enable = (message.arg1 == 1); 6256 mWifiNative.startTdls(remoteAddress, enable); 6257 } 6258 break; 6259 case WifiMonitor.ANQP_DONE_EVENT: 6260 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6261 break; 6262 default: 6263 return NOT_HANDLED; 6264 } 6265 return HANDLED; 6266 } 6267 @Override 6268 public void exit() { 6269 6270 mWifiLogger.stopLogging(); 6271 6272 mIsRunning = false; 6273 updateBatteryWorkSource(null); 6274 mScanResults = new ArrayList<>(); 6275 6276 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6277 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6278 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6279 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6280 noteScanEnd(); // wrap up any pending request. 6281 mBufferedScanMsg.clear(); 6282 } 6283 } 6284 6285 class WaitForP2pDisableState extends State { 6286 private State mTransitionToState; 6287 @Override 6288 public void enter() { 6289 switch (getCurrentMessage().what) { 6290 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6291 mTransitionToState = mInitialState; 6292 break; 6293 case CMD_DELAYED_STOP_DRIVER: 6294 mTransitionToState = mDriverStoppingState; 6295 break; 6296 case CMD_STOP_SUPPLICANT: 6297 mTransitionToState = mSupplicantStoppingState; 6298 break; 6299 default: 6300 mTransitionToState = mDriverStoppingState; 6301 break; 6302 } 6303 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6304 } 6305 @Override 6306 public boolean processMessage(Message message) { 6307 logStateAndMessage(message, getClass().getSimpleName()); 6308 6309 switch(message.what) { 6310 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6311 transitionTo(mTransitionToState); 6312 break; 6313 /* Defer wifi start/shut and driver commands */ 6314 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6315 case CMD_START_SUPPLICANT: 6316 case CMD_STOP_SUPPLICANT: 6317 case CMD_START_AP: 6318 case CMD_STOP_AP: 6319 case CMD_START_DRIVER: 6320 case CMD_STOP_DRIVER: 6321 case CMD_SET_OPERATIONAL_MODE: 6322 case CMD_SET_COUNTRY_CODE: 6323 case CMD_SET_FREQUENCY_BAND: 6324 case CMD_START_PACKET_FILTERING: 6325 case CMD_STOP_PACKET_FILTERING: 6326 case CMD_START_SCAN: 6327 case CMD_DISCONNECT: 6328 case CMD_REASSOCIATE: 6329 case CMD_RECONNECT: 6330 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6331 deferMessage(message); 6332 break; 6333 default: 6334 return NOT_HANDLED; 6335 } 6336 return HANDLED; 6337 } 6338 } 6339 6340 class DriverStoppingState extends State { 6341 @Override 6342 public boolean processMessage(Message message) { 6343 logStateAndMessage(message, getClass().getSimpleName()); 6344 6345 switch(message.what) { 6346 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6347 SupplicantState state = handleSupplicantStateChange(message); 6348 if (state == SupplicantState.INTERFACE_DISABLED) { 6349 transitionTo(mDriverStoppedState); 6350 } 6351 break; 6352 /* Queue driver commands */ 6353 case CMD_START_DRIVER: 6354 case CMD_STOP_DRIVER: 6355 case CMD_SET_COUNTRY_CODE: 6356 case CMD_SET_FREQUENCY_BAND: 6357 case CMD_START_PACKET_FILTERING: 6358 case CMD_STOP_PACKET_FILTERING: 6359 case CMD_START_SCAN: 6360 case CMD_DISCONNECT: 6361 case CMD_REASSOCIATE: 6362 case CMD_RECONNECT: 6363 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6364 deferMessage(message); 6365 break; 6366 default: 6367 return NOT_HANDLED; 6368 } 6369 return HANDLED; 6370 } 6371 } 6372 6373 class DriverStoppedState extends State { 6374 @Override 6375 public boolean processMessage(Message message) { 6376 logStateAndMessage(message, getClass().getSimpleName()); 6377 switch (message.what) { 6378 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6379 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6380 SupplicantState state = stateChangeResult.state; 6381 // A WEXT bug means that we can be back to driver started state 6382 // unexpectedly 6383 if (SupplicantState.isDriverActive(state)) { 6384 transitionTo(mDriverStartedState); 6385 } 6386 break; 6387 case CMD_START_DRIVER: 6388 mWakeLock.acquire(); 6389 mWifiNative.startDriver(); 6390 mWakeLock.release(); 6391 transitionTo(mDriverStartingState); 6392 break; 6393 default: 6394 return NOT_HANDLED; 6395 } 6396 return HANDLED; 6397 } 6398 } 6399 6400 class ScanModeState extends State { 6401 private int mLastOperationMode; 6402 @Override 6403 public void enter() { 6404 mLastOperationMode = mOperationalMode; 6405 } 6406 @Override 6407 public boolean processMessage(Message message) { 6408 logStateAndMessage(message, getClass().getSimpleName()); 6409 6410 switch(message.what) { 6411 case CMD_SET_OPERATIONAL_MODE: 6412 if (message.arg1 == CONNECT_MODE) { 6413 6414 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6415 setWifiState(WIFI_STATE_ENABLED); 6416 // Load and re-enable networks when going back to enabled state 6417 // This is essential for networks to show up after restore 6418 mWifiConfigStore.loadAndEnableAllNetworks(); 6419 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6420 } else { 6421 mWifiConfigStore.enableAllNetworks(); 6422 } 6423 6424 // Try autojoining with recent network already present in the cache 6425 // If none are found then trigger a scan which will trigger autojoin 6426 // upon reception of scan results event 6427 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6428 startScan(ENABLE_WIFI, 0, null, null); 6429 } 6430 6431 // Loose last selection choice since user toggled WiFi 6432 mWifiConfigStore. 6433 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6434 6435 mOperationalMode = CONNECT_MODE; 6436 transitionTo(mDisconnectedState); 6437 } else { 6438 // Nothing to do 6439 return HANDLED; 6440 } 6441 break; 6442 // Handle scan. All the connection related commands are 6443 // handled only in ConnectModeState 6444 case CMD_START_SCAN: 6445 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6446 break; 6447 default: 6448 return NOT_HANDLED; 6449 } 6450 return HANDLED; 6451 } 6452 } 6453 6454 6455 String smToString(Message message) { 6456 return smToString(message.what); 6457 } 6458 6459 String smToString(int what) { 6460 String s = "unknown"; 6461 switch (what) { 6462 case WifiMonitor.DRIVER_HUNG_EVENT: 6463 s = "DRIVER_HUNG_EVENT"; 6464 break; 6465 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6466 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6467 break; 6468 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6469 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6470 break; 6471 case CMD_SET_FREQUENCY_BAND: 6472 s = "CMD_SET_FREQUENCY_BAND"; 6473 break; 6474 case CMD_DELAYED_NETWORK_DISCONNECT: 6475 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6476 break; 6477 case CMD_TEST_NETWORK_DISCONNECT: 6478 s = "CMD_TEST_NETWORK_DISCONNECT"; 6479 break; 6480 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6481 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6482 break; 6483 case CMD_DISABLE_EPHEMERAL_NETWORK: 6484 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6485 break; 6486 case CMD_START_DRIVER: 6487 s = "CMD_START_DRIVER"; 6488 break; 6489 case CMD_STOP_DRIVER: 6490 s = "CMD_STOP_DRIVER"; 6491 break; 6492 case CMD_STOP_SUPPLICANT: 6493 s = "CMD_STOP_SUPPLICANT"; 6494 break; 6495 case CMD_STOP_SUPPLICANT_FAILED: 6496 s = "CMD_STOP_SUPPLICANT_FAILED"; 6497 break; 6498 case CMD_START_SUPPLICANT: 6499 s = "CMD_START_SUPPLICANT"; 6500 break; 6501 case CMD_REQUEST_AP_CONFIG: 6502 s = "CMD_REQUEST_AP_CONFIG"; 6503 break; 6504 case CMD_RESPONSE_AP_CONFIG: 6505 s = "CMD_RESPONSE_AP_CONFIG"; 6506 break; 6507 case CMD_TETHER_STATE_CHANGE: 6508 s = "CMD_TETHER_STATE_CHANGE"; 6509 break; 6510 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6511 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6512 break; 6513 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6514 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6515 break; 6516 case CMD_ADD_OR_UPDATE_NETWORK: 6517 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6518 break; 6519 case CMD_REMOVE_NETWORK: 6520 s = "CMD_REMOVE_NETWORK"; 6521 break; 6522 case CMD_ENABLE_NETWORK: 6523 s = "CMD_ENABLE_NETWORK"; 6524 break; 6525 case CMD_ENABLE_ALL_NETWORKS: 6526 s = "CMD_ENABLE_ALL_NETWORKS"; 6527 break; 6528 case CMD_AUTO_CONNECT: 6529 s = "CMD_AUTO_CONNECT"; 6530 break; 6531 case CMD_AUTO_ROAM: 6532 s = "CMD_AUTO_ROAM"; 6533 break; 6534 case CMD_AUTO_SAVE_NETWORK: 6535 s = "CMD_AUTO_SAVE_NETWORK"; 6536 break; 6537 case CMD_BOOT_COMPLETED: 6538 s = "CMD_BOOT_COMPLETED"; 6539 break; 6540 case DhcpStateMachine.CMD_START_DHCP: 6541 s = "CMD_START_DHCP"; 6542 break; 6543 case DhcpStateMachine.CMD_STOP_DHCP: 6544 s = "CMD_STOP_DHCP"; 6545 break; 6546 case DhcpStateMachine.CMD_RENEW_DHCP: 6547 s = "CMD_RENEW_DHCP"; 6548 break; 6549 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6550 s = "CMD_PRE_DHCP_ACTION"; 6551 break; 6552 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6553 s = "CMD_POST_DHCP_ACTION"; 6554 break; 6555 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6556 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6557 break; 6558 case DhcpStateMachine.CMD_ON_QUIT: 6559 s = "CMD_ON_QUIT"; 6560 break; 6561 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6562 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6563 break; 6564 case WifiManager.DISABLE_NETWORK: 6565 s = "WifiManager.DISABLE_NETWORK"; 6566 break; 6567 case CMD_BLACKLIST_NETWORK: 6568 s = "CMD_BLACKLIST_NETWORK"; 6569 break; 6570 case CMD_CLEAR_BLACKLIST: 6571 s = "CMD_CLEAR_BLACKLIST"; 6572 break; 6573 case CMD_SAVE_CONFIG: 6574 s = "CMD_SAVE_CONFIG"; 6575 break; 6576 case CMD_GET_CONFIGURED_NETWORKS: 6577 s = "CMD_GET_CONFIGURED_NETWORKS"; 6578 break; 6579 case CMD_GET_SUPPORTED_FEATURES: 6580 s = "CMD_GET_SUPPORTED_FEATURES"; 6581 break; 6582 case CMD_UNWANTED_NETWORK: 6583 s = "CMD_UNWANTED_NETWORK"; 6584 break; 6585 case CMD_NETWORK_STATUS: 6586 s = "CMD_NETWORK_STATUS"; 6587 break; 6588 case CMD_GET_LINK_LAYER_STATS: 6589 s = "CMD_GET_LINK_LAYER_STATS"; 6590 break; 6591 case CMD_GET_MATCHING_CONFIG: 6592 s = "CMD_GET_MATCHING_CONFIG"; 6593 break; 6594 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6595 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6596 break; 6597 case CMD_DISCONNECT: 6598 s = "CMD_DISCONNECT"; 6599 break; 6600 case CMD_RECONNECT: 6601 s = "CMD_RECONNECT"; 6602 break; 6603 case CMD_REASSOCIATE: 6604 s = "CMD_REASSOCIATE"; 6605 break; 6606 case CMD_GET_CONNECTION_STATISTICS: 6607 s = "CMD_GET_CONNECTION_STATISTICS"; 6608 break; 6609 case CMD_SET_HIGH_PERF_MODE: 6610 s = "CMD_SET_HIGH_PERF_MODE"; 6611 break; 6612 case CMD_SET_COUNTRY_CODE: 6613 s = "CMD_SET_COUNTRY_CODE"; 6614 break; 6615 case CMD_ENABLE_RSSI_POLL: 6616 s = "CMD_ENABLE_RSSI_POLL"; 6617 break; 6618 case CMD_RSSI_POLL: 6619 s = "CMD_RSSI_POLL"; 6620 break; 6621 case CMD_START_PACKET_FILTERING: 6622 s = "CMD_START_PACKET_FILTERING"; 6623 break; 6624 case CMD_STOP_PACKET_FILTERING: 6625 s = "CMD_STOP_PACKET_FILTERING"; 6626 break; 6627 case CMD_SET_SUSPEND_OPT_ENABLED: 6628 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6629 break; 6630 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6631 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6632 break; 6633 case CMD_UPDATE_LINKPROPERTIES: 6634 s = "CMD_UPDATE_LINKPROPERTIES"; 6635 break; 6636 case CMD_RELOAD_TLS_AND_RECONNECT: 6637 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6638 break; 6639 case WifiManager.CONNECT_NETWORK: 6640 s = "CONNECT_NETWORK"; 6641 break; 6642 case WifiManager.SAVE_NETWORK: 6643 s = "SAVE_NETWORK"; 6644 break; 6645 case WifiManager.FORGET_NETWORK: 6646 s = "FORGET_NETWORK"; 6647 break; 6648 case WifiMonitor.SUP_CONNECTION_EVENT: 6649 s = "SUP_CONNECTION_EVENT"; 6650 break; 6651 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6652 s = "SUP_DISCONNECTION_EVENT"; 6653 break; 6654 case WifiMonitor.SCAN_RESULTS_EVENT: 6655 s = "SCAN_RESULTS_EVENT"; 6656 break; 6657 case WifiMonitor.SCAN_FAILED_EVENT: 6658 s = "SCAN_FAILED_EVENT"; 6659 break; 6660 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6661 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6662 break; 6663 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6664 s = "AUTHENTICATION_FAILURE_EVENT"; 6665 break; 6666 case WifiMonitor.SSID_TEMP_DISABLED: 6667 s = "SSID_TEMP_DISABLED"; 6668 break; 6669 case WifiMonitor.SSID_REENABLED: 6670 s = "SSID_REENABLED"; 6671 break; 6672 case WifiMonitor.WPS_SUCCESS_EVENT: 6673 s = "WPS_SUCCESS_EVENT"; 6674 break; 6675 case WifiMonitor.WPS_FAIL_EVENT: 6676 s = "WPS_FAIL_EVENT"; 6677 break; 6678 case WifiMonitor.SUP_REQUEST_IDENTITY: 6679 s = "SUP_REQUEST_IDENTITY"; 6680 break; 6681 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6682 s = "NETWORK_CONNECTION_EVENT"; 6683 break; 6684 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6685 s = "NETWORK_DISCONNECTION_EVENT"; 6686 break; 6687 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6688 s = "ASSOCIATION_REJECTION_EVENT"; 6689 break; 6690 case CMD_SET_OPERATIONAL_MODE: 6691 s = "CMD_SET_OPERATIONAL_MODE"; 6692 break; 6693 case CMD_START_SCAN: 6694 s = "CMD_START_SCAN"; 6695 break; 6696 case CMD_DISABLE_P2P_RSP: 6697 s = "CMD_DISABLE_P2P_RSP"; 6698 break; 6699 case CMD_DISABLE_P2P_REQ: 6700 s = "CMD_DISABLE_P2P_REQ"; 6701 break; 6702 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6703 s = "GOOD_LINK_DETECTED"; 6704 break; 6705 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6706 s = "POOR_LINK_DETECTED"; 6707 break; 6708 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6709 s = "GROUP_CREATING_TIMED_OUT"; 6710 break; 6711 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6712 s = "P2P_CONNECTION_CHANGED"; 6713 break; 6714 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6715 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6716 break; 6717 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6718 s = "P2P.SET_MIRACAST_MODE"; 6719 break; 6720 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6721 s = "P2P.BLOCK_DISCOVERY"; 6722 break; 6723 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6724 s = "P2P.SET_COUNTRY_CODE"; 6725 break; 6726 case WifiManager.CANCEL_WPS: 6727 s = "CANCEL_WPS"; 6728 break; 6729 case WifiManager.CANCEL_WPS_FAILED: 6730 s = "CANCEL_WPS_FAILED"; 6731 break; 6732 case WifiManager.CANCEL_WPS_SUCCEDED: 6733 s = "CANCEL_WPS_SUCCEDED"; 6734 break; 6735 case WifiManager.START_WPS: 6736 s = "START_WPS"; 6737 break; 6738 case WifiManager.START_WPS_SUCCEEDED: 6739 s = "START_WPS_SUCCEEDED"; 6740 break; 6741 case WifiManager.WPS_FAILED: 6742 s = "WPS_FAILED"; 6743 break; 6744 case WifiManager.WPS_COMPLETED: 6745 s = "WPS_COMPLETED"; 6746 break; 6747 case WifiManager.RSSI_PKTCNT_FETCH: 6748 s = "RSSI_PKTCNT_FETCH"; 6749 break; 6750 case CMD_IP_CONFIGURATION_LOST: 6751 s = "CMD_IP_CONFIGURATION_LOST"; 6752 break; 6753 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6754 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6755 break; 6756 case CMD_IP_REACHABILITY_LOST: 6757 s = "CMD_IP_REACHABILITY_LOST"; 6758 break; 6759 case CMD_STATIC_IP_SUCCESS: 6760 s = "CMD_STATIC_IP_SUCCESSFUL"; 6761 break; 6762 case CMD_STATIC_IP_FAILURE: 6763 s = "CMD_STATIC_IP_FAILURE"; 6764 break; 6765 case DhcpStateMachine.DHCP_SUCCESS: 6766 s = "DHCP_SUCCESS"; 6767 break; 6768 case DhcpStateMachine.DHCP_FAILURE: 6769 s = "DHCP_FAILURE"; 6770 break; 6771 case CMD_TARGET_BSSID: 6772 s = "CMD_TARGET_BSSID"; 6773 break; 6774 case CMD_ASSOCIATED_BSSID: 6775 s = "CMD_ASSOCIATED_BSSID"; 6776 break; 6777 case CMD_REMOVE_APP_CONFIGURATIONS: 6778 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6779 break; 6780 case CMD_REMOVE_USER_CONFIGURATIONS: 6781 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6782 break; 6783 case CMD_ROAM_WATCHDOG_TIMER: 6784 s = "CMD_ROAM_WATCHDOG_TIMER"; 6785 break; 6786 case CMD_SCREEN_STATE_CHANGED: 6787 s = "CMD_SCREEN_STATE_CHANGED"; 6788 break; 6789 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6790 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6791 break; 6792 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6793 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6794 break; 6795 case CMD_STARTED_PNO_DBG: 6796 s = "CMD_STARTED_PNO_DBG"; 6797 break; 6798 case CMD_STARTED_GSCAN_DBG: 6799 s = "CMD_STARTED_GSCAN_DBG"; 6800 break; 6801 case CMD_PNO_NETWORK_FOUND: 6802 s = "CMD_PNO_NETWORK_FOUND"; 6803 break; 6804 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6805 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6806 break; 6807 default: 6808 s = "what:" + Integer.toString(what); 6809 break; 6810 } 6811 return s; 6812 } 6813 6814 void registerConnected() { 6815 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6816 long now_ms = System.currentTimeMillis(); 6817 // We are switching away from this configuration, 6818 // hence record the time we were connected last 6819 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6820 if (config != null) { 6821 config.lastConnected = System.currentTimeMillis(); 6822 config.autoJoinBailedDueToLowRssi = false; 6823 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6824 config.numConnectionFailures = 0; 6825 config.numIpConfigFailures = 0; 6826 config.numAuthFailures = 0; 6827 config.numAssociation++; 6828 } 6829 mBadLinkspeedcount = 0; 6830 } 6831 } 6832 6833 void registerDisconnected() { 6834 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6835 long now_ms = System.currentTimeMillis(); 6836 // We are switching away from this configuration, 6837 // hence record the time we were connected last 6838 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6839 if (config != null) { 6840 config.lastDisconnected = System.currentTimeMillis(); 6841 if (config.ephemeral) { 6842 // Remove ephemeral WifiConfigurations from file 6843 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6844 } 6845 } 6846 } 6847 } 6848 6849 void noteWifiDisabledWhileAssociated() { 6850 // We got disabled by user while we were associated, make note of it 6851 int rssi = mWifiInfo.getRssi(); 6852 WifiConfiguration config = getCurrentWifiConfiguration(); 6853 if (getCurrentState() == mConnectedState 6854 && rssi != WifiInfo.INVALID_RSSI 6855 && config != null) { 6856 boolean is24GHz = mWifiInfo.is24GHz(); 6857 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6858 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6859 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6860 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6861 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6862 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6863 if (isBadRSSI) { 6864 // Take note that we got disabled while RSSI was Bad 6865 config.numUserTriggeredWifiDisableLowRSSI++; 6866 } else if (isLowRSSI) { 6867 // Take note that we got disabled while RSSI was Low 6868 config.numUserTriggeredWifiDisableBadRSSI++; 6869 } else if (!isHighRSSI) { 6870 // Take note that we got disabled while RSSI was Not high 6871 config.numUserTriggeredWifiDisableNotHighRSSI++; 6872 } 6873 } 6874 } 6875 6876 WifiConfiguration getCurrentWifiConfiguration() { 6877 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6878 return null; 6879 } 6880 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6881 } 6882 6883 ScanResult getCurrentScanResult() { 6884 WifiConfiguration config = getCurrentWifiConfiguration(); 6885 if (config == null) { 6886 return null; 6887 } 6888 String BSSID = mWifiInfo.getBSSID(); 6889 if (BSSID == null) { 6890 BSSID = mTargetRoamBSSID; 6891 } 6892 ScanDetailCache scanDetailCache = 6893 mWifiConfigStore.getScanDetailCache(config); 6894 6895 if (scanDetailCache == null) { 6896 return null; 6897 } 6898 6899 return scanDetailCache.get(BSSID); 6900 } 6901 6902 String getCurrentBSSID() { 6903 if (linkDebouncing) { 6904 return null; 6905 } 6906 return mLastBssid; 6907 } 6908 6909 class ConnectModeState extends State { 6910 6911 @Override 6912 public void enter() { 6913 connectScanningService(); 6914 } 6915 6916 @Override 6917 public boolean processMessage(Message message) { 6918 WifiConfiguration config; 6919 int netId; 6920 boolean ok; 6921 boolean didDisconnect; 6922 String bssid; 6923 String ssid; 6924 NetworkUpdateResult result; 6925 logStateAndMessage(message, getClass().getSimpleName()); 6926 6927 switch (message.what) { 6928 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6929 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6930 didBlackListBSSID = false; 6931 bssid = (String) message.obj; 6932 if (bssid == null || TextUtils.isEmpty(bssid)) { 6933 // If BSSID is null, use the target roam BSSID 6934 bssid = mTargetRoamBSSID; 6935 } 6936 if (bssid != null) { 6937 // If we have a BSSID, tell configStore to black list it 6938 synchronized(mScanResultCache) { 6939 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6940 (mLastNetworkId, bssid, false); 6941 } 6942 } 6943 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6944 break; 6945 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6946 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6947 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6948 break; 6949 case WifiMonitor.SSID_TEMP_DISABLED: 6950 case WifiMonitor.SSID_REENABLED: 6951 String substr = (String) message.obj; 6952 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6953 "temp-disabled" : "re-enabled"; 6954 loge("ConnectModeState SSID state=" + en + " nid=" 6955 + Integer.toString(message.arg1) + " [" + substr + "]"); 6956 synchronized(mScanResultCache) { 6957 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6958 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6959 } 6960 break; 6961 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6962 SupplicantState state = handleSupplicantStateChange(message); 6963 // A driver/firmware hang can now put the interface in a down state. 6964 // We detect the interface going down and recover from it 6965 if (!SupplicantState.isDriverActive(state)) { 6966 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6967 handleNetworkDisconnect(); 6968 } 6969 log("Detected an interface down, restart driver"); 6970 transitionTo(mDriverStoppedState); 6971 sendMessage(CMD_START_DRIVER); 6972 break; 6973 } 6974 6975 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6976 // when authentication times out after a successful connection, 6977 // we can figure this from the supplicant state. If supplicant 6978 // state is DISCONNECTED, but the mNetworkInfo says we are not 6979 // disconnected, we need to handle a disconnection 6980 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6981 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6982 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6983 handleNetworkDisconnect(); 6984 transitionTo(mDisconnectedState); 6985 } 6986 6987 // If we have COMPLETED a connection to a BSSID, start doing 6988 // DNAv4/DNAv6 -style probing for on-link neighbors of 6989 // interest (e.g. routers); harmless if none are configured. 6990 if (state == SupplicantState.COMPLETED) { 6991 if (mIpReachabilityMonitor != null) { 6992 mIpReachabilityMonitor.probeAll(); 6993 } 6994 } 6995 break; 6996 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6997 if (message.arg1 == 1) { 6998 mWifiNative.disconnect(); 6999 mTemporarilyDisconnectWifi = true; 7000 } else { 7001 mWifiNative.reconnect(); 7002 mTemporarilyDisconnectWifi = false; 7003 } 7004 break; 7005 case CMD_ADD_OR_UPDATE_NETWORK: 7006 config = (WifiConfiguration) message.obj; 7007 7008 if (!recordUidIfAuthorized(config, message.sendingUid, 7009 /* onlyAnnotate */ false)) { 7010 loge("Not authorized to update network " 7011 + " config=" + config.SSID 7012 + " cnid=" + config.networkId 7013 + " uid=" + message.sendingUid); 7014 replyToMessage(message, message.what, FAILURE); 7015 break; 7016 } 7017 7018 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7019 if (res < 0) { 7020 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7021 } else { 7022 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7023 if (curConfig != null && config != null) { 7024 if (curConfig.priority < config.priority 7025 && config.status == WifiConfiguration.Status.ENABLED) { 7026 // Interpret this as a connect attempt 7027 // Set the last selected configuration so as to allow the system to 7028 // stick the last user choice without persisting the choice 7029 mWifiConfigStore.setLastSelectedConfiguration(res); 7030 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7031 mWifiConfigStore.writeKnownNetworkHistory(false); 7032 7033 // Remember time of last connection attempt 7034 lastConnectAttempt = System.currentTimeMillis(); 7035 7036 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7037 7038 // As a courtesy to the caller, trigger a scan now 7039 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7040 } 7041 } 7042 } 7043 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7044 break; 7045 case CMD_REMOVE_NETWORK: 7046 netId = message.arg1; 7047 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7048 /* onlyAnnotate */ false)) { 7049 loge("Not authorized to remove network " 7050 + " cnid=" + netId 7051 + " uid=" + message.sendingUid); 7052 replyToMessage(message, message.what, FAILURE); 7053 break; 7054 } 7055 7056 ok = mWifiConfigStore.removeNetwork(message.arg1); 7057 if (!ok) { 7058 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7059 } 7060 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7061 break; 7062 case CMD_ENABLE_NETWORK: 7063 boolean others = message.arg2 == 1; 7064 // Tell autojoin the user did try to select to that network 7065 // However, do NOT persist the choice by bumping the priority of the network 7066 if (others) { 7067 mWifiAutoJoinController. 7068 updateConfigurationHistory(message.arg1, true, false); 7069 // Set the last selected configuration so as to allow the system to 7070 // stick the last user choice without persisting the choice 7071 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 7072 7073 // Remember time of last connection attempt 7074 lastConnectAttempt = System.currentTimeMillis(); 7075 7076 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7077 } 7078 // Cancel auto roam requests 7079 autoRoamSetBSSID(message.arg1, "any"); 7080 7081 int uid = message.sendingUid; 7082 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1, uid); 7083 if (!ok) { 7084 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7085 } 7086 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7087 break; 7088 case CMD_ENABLE_ALL_NETWORKS: 7089 long time = android.os.SystemClock.elapsedRealtime(); 7090 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7091 mWifiConfigStore.enableAllNetworks(); 7092 mLastEnableAllNetworksTime = time; 7093 } 7094 break; 7095 case WifiManager.DISABLE_NETWORK: 7096 if (mWifiConfigStore.disableNetwork(message.arg1, 7097 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7098 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7099 } else { 7100 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7101 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7102 WifiManager.ERROR); 7103 } 7104 break; 7105 case CMD_DISABLE_EPHEMERAL_NETWORK: 7106 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7107 if (config != null) { 7108 if (config.networkId == mLastNetworkId) { 7109 // Disconnect and let autojoin reselect a new network 7110 sendMessage(CMD_DISCONNECT); 7111 } 7112 } 7113 break; 7114 case CMD_BLACKLIST_NETWORK: 7115 mWifiConfigStore.blackListBssid((String) message.obj); 7116 break; 7117 case CMD_CLEAR_BLACKLIST: 7118 mWifiConfigStore.clearBssidBlacklist(); 7119 break; 7120 case CMD_SAVE_CONFIG: 7121 ok = mWifiConfigStore.saveConfig(); 7122 7123 if (DBG) loge("wifistatemachine did save config " + ok); 7124 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7125 7126 // Inform the backup manager about a data change 7127 IBackupManager ibm = IBackupManager.Stub.asInterface( 7128 ServiceManager.getService(Context.BACKUP_SERVICE)); 7129 if (ibm != null) { 7130 try { 7131 ibm.dataChanged("com.android.providers.settings"); 7132 } catch (Exception e) { 7133 // Try again later 7134 } 7135 } 7136 break; 7137 case CMD_GET_CONFIGURED_NETWORKS: 7138 replyToMessage(message, message.what, 7139 mWifiConfigStore.getConfiguredNetworks()); 7140 break; 7141 case WifiMonitor.SUP_REQUEST_IDENTITY: 7142 int networkId = message.arg2; 7143 boolean identitySent = false; 7144 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7145 7146 if (targetWificonfiguration != null 7147 && targetWificonfiguration.enterpriseConfig != null) { 7148 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7149 } 7150 7151 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7152 if (targetWificonfiguration != null 7153 && targetWificonfiguration.networkId == networkId 7154 && targetWificonfiguration.allowedKeyManagement 7155 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7156 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7157 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7158 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7159 TelephonyManager tm = (TelephonyManager) 7160 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7161 if (tm != null) { 7162 String imsi = tm.getSubscriberId(); 7163 String mccMnc = ""; 7164 7165 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7166 mccMnc = tm.getSimOperator(); 7167 7168 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7169 7170 if (!identity.isEmpty()) { 7171 mWifiNative.simIdentityResponse(networkId, identity); 7172 identitySent = true; 7173 } 7174 } 7175 } 7176 if (!identitySent) { 7177 // Supplicant lacks credentials to connect to that network, hence black list 7178 ssid = (String) message.obj; 7179 if (targetWificonfiguration != null && ssid != null 7180 && targetWificonfiguration.SSID != null 7181 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7182 mWifiConfigStore.handleSSIDStateChange( 7183 targetWificonfiguration.networkId, false, 7184 "AUTH_FAILED no identity", null); 7185 } 7186 // Disconnect now, as we don't have any way to fullfill 7187 // the supplicant request. 7188 mWifiConfigStore.setLastSelectedConfiguration( 7189 WifiConfiguration.INVALID_NETWORK_ID); 7190 mWifiNative.disconnect(); 7191 } 7192 break; 7193 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7194 logd("Received SUP_REQUEST_SIM_AUTH"); 7195 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7196 if (requestData != null) { 7197 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7198 handleGsmAuthRequest(requestData); 7199 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7200 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7201 handle3GAuthRequest(requestData); 7202 } 7203 } else { 7204 loge("Invalid sim auth request"); 7205 } 7206 break; 7207 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7208 replyToMessage(message, message.what, 7209 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7210 break; 7211 case CMD_GET_MATCHING_CONFIG: 7212 replyToMessage(message, message.what, 7213 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7214 break; 7215 /* Do a redundant disconnect without transition */ 7216 case CMD_DISCONNECT: 7217 mWifiConfigStore.setLastSelectedConfiguration 7218 (WifiConfiguration.INVALID_NETWORK_ID); 7219 mWifiNative.disconnect(); 7220 break; 7221 case CMD_RECONNECT: 7222 mWifiAutoJoinController.attemptAutoJoin(); 7223 break; 7224 case CMD_REASSOCIATE: 7225 lastConnectAttempt = System.currentTimeMillis(); 7226 mWifiNative.reassociate(); 7227 break; 7228 case CMD_RELOAD_TLS_AND_RECONNECT: 7229 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7230 logd("Reconnecting to give a chance to un-connected TLS networks"); 7231 mWifiNative.disconnect(); 7232 lastConnectAttempt = System.currentTimeMillis(); 7233 mWifiNative.reconnect(); 7234 } 7235 break; 7236 case CMD_AUTO_ROAM: 7237 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7238 return HANDLED; 7239 case CMD_AUTO_CONNECT: 7240 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7241 * associated status to the STATUS command but somehow-someplace still thinks 7242 * it is associated and thus will ignore select/reconnect command with 7243 * following message: 7244 * "Already associated with the selected network - do nothing" 7245 * 7246 * Hence, sends a disconnect to supplicant first. 7247 */ 7248 didDisconnect = false; 7249 if (getCurrentState() != mDisconnectedState) { 7250 /** Supplicant will ignore the reconnect if we are currently associated, 7251 * hence trigger a disconnect 7252 */ 7253 didDisconnect = true; 7254 mWifiNative.disconnect(); 7255 } 7256 7257 /* connect command coming from auto-join */ 7258 config = (WifiConfiguration) message.obj; 7259 netId = message.arg1; 7260 int roam = message.arg2; 7261 loge("CMD_AUTO_CONNECT sup state " 7262 + mSupplicantStateTracker.getSupplicantStateName() 7263 + " my state " + getCurrentState().getName() 7264 + " nid=" + Integer.toString(netId) 7265 + " roam=" + Integer.toString(roam)); 7266 if (config == null) { 7267 loge("AUTO_CONNECT and no config, bail out..."); 7268 break; 7269 } 7270 7271 /* Make sure we cancel any previous roam request */ 7272 autoRoamSetBSSID(netId, config.BSSID); 7273 7274 /* Save the network config */ 7275 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 7276 + " nid=" + Integer.toString(netId)); 7277 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7278 netId = result.getNetworkId(); 7279 loge("CMD_AUTO_CONNECT did save config -> " 7280 + " nid=" + Integer.toString(netId)); 7281 7282 // Since we updated the config,read it back from config store: 7283 config = mWifiConfigStore.getWifiConfiguration(netId); 7284 if (config == null) { 7285 loge("CMD_AUTO_CONNECT couldnt update the config, got null config"); 7286 break; 7287 } 7288 if (netId != config.networkId) { 7289 loge("CMD_AUTO_CONNECT couldnt update the config, want" 7290 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7291 break; 7292 } 7293 7294 if (deferForUserInput(message, netId, false)) { 7295 break; 7296 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7297 WifiConfiguration.USER_BANNED) { 7298 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7299 WifiManager.NOT_AUTHORIZED); 7300 break; 7301 } 7302 7303 // Make sure the network is enabled, since supplicant will not reenable it 7304 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7305 7306 // If we're autojoining a network that the user or an app explicitly selected, 7307 // keep track of the UID that selected it. 7308 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7309 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7310 7311 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7312 lastConnectUid) && mWifiNative.reconnect()) { 7313 lastConnectAttempt = System.currentTimeMillis(); 7314 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7315 config = mWifiConfigStore.getWifiConfiguration(netId); 7316 if (config != null 7317 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7318 // If we autojoined a different config than the user selected one, 7319 // it means we could not see the last user selection, 7320 // or that the last user selection was faulty and ended up blacklisted 7321 // for some reason (in which case the user is notified with an error 7322 // message in the Wifi picker), and thus we managed to auto-join away 7323 // from the selected config. -> in that case we need to forget 7324 // the selection because we don't want to abruptly switch back to it. 7325 // 7326 // Note that the user selection is also forgotten after a period of time 7327 // during which the device has been disconnected. 7328 // The default value is 30 minutes : see the code path at bottom of 7329 // setScanResults() function. 7330 mWifiConfigStore. 7331 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7332 } 7333 mAutoRoaming = roam; 7334 if (isRoaming() || linkDebouncing) { 7335 transitionTo(mRoamingState); 7336 } else if (didDisconnect) { 7337 transitionTo(mDisconnectingState); 7338 } else { 7339 /* Already in disconnected state, nothing to change */ 7340 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7341 int delay = 60 * 1000; 7342 if (VDBG) { 7343 loge("Starting PNO alarm: " + delay); 7344 } 7345 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7346 System.currentTimeMillis() + delay, 7347 mPnoIntent); 7348 } 7349 mRestartAutoJoinOffloadCounter++; 7350 } 7351 } else { 7352 loge("Failed to connect config: " + config + " netId: " + netId); 7353 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7354 WifiManager.ERROR); 7355 break; 7356 } 7357 break; 7358 case CMD_REMOVE_APP_CONFIGURATIONS: 7359 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7360 break; 7361 case CMD_REMOVE_USER_CONFIGURATIONS: 7362 mWifiConfigStore.removeNetworksForUser(message.arg1); 7363 break; 7364 case WifiManager.CONNECT_NETWORK: 7365 /** 7366 * The connect message can contain a network id passed as arg1 on message or 7367 * or a config passed as obj on message. 7368 * For a new network, a config is passed to create and connect. 7369 * For an existing network, a network id is passed 7370 */ 7371 netId = message.arg1; 7372 config = (WifiConfiguration) message.obj; 7373 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7374 boolean updatedExisting = false; 7375 7376 /* Save the network config */ 7377 if (config != null) { 7378 // When connecting to an access point, WifiStateMachine wants to update the 7379 // relevant config with administrative data. This update should not be 7380 // considered a 'real' update, therefore lockdown by Device Owner must be 7381 // disregarded. 7382 if (!recordUidIfAuthorized(config, message.sendingUid, 7383 /* onlyAnnotate */ true)) { 7384 loge("Not authorized to update network " 7385 + " config=" + config.SSID 7386 + " cnid=" + config.networkId 7387 + " uid=" + message.sendingUid); 7388 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7389 WifiManager.NOT_AUTHORIZED); 7390 break; 7391 } 7392 7393 String configKey = config.configKey(true /* allowCached */); 7394 WifiConfiguration savedConfig = 7395 mWifiConfigStore.getWifiConfiguration(configKey); 7396 if (savedConfig != null) { 7397 // There is an existing config with this netId, but it wasn't exposed 7398 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7399 // getConfiguredNetworks). Remove those bits and update the config. 7400 config = savedConfig; 7401 loge("CONNECT_NETWORK updating existing config with id=" + 7402 config.networkId + " configKey=" + configKey); 7403 config.ephemeral = false; 7404 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7405 updatedExisting = true; 7406 } 7407 7408 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7409 netId = result.getNetworkId(); 7410 } 7411 config = mWifiConfigStore.getWifiConfiguration(netId); 7412 7413 if (config == null) { 7414 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7415 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7416 + getCurrentState().getName()); 7417 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7418 WifiManager.ERROR); 7419 break; 7420 } else { 7421 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7422 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 7423 + " config=" + config.SSID 7424 + " cnid=" + config.networkId 7425 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7426 + " my state " + getCurrentState().getName() 7427 + " uid = " + message.sendingUid 7428 + wasSkipped); 7429 } 7430 7431 autoRoamSetBSSID(netId, "any"); 7432 7433 if (message.sendingUid == Process.WIFI_UID 7434 || message.sendingUid == Process.SYSTEM_UID) { 7435 // As a sanity measure, clear the BSSID in the supplicant network block. 7436 // If system or Wifi Settings want to connect, they will not 7437 // specify the BSSID. 7438 // If an app however had added a BSSID to this configuration, and the BSSID 7439 // was wrong, Then we would forever fail to connect until that BSSID 7440 // is cleaned up. 7441 clearConfigBSSID(config, "CONNECT_NETWORK"); 7442 } 7443 7444 if (deferForUserInput(message, netId, true)) { 7445 break; 7446 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7447 WifiConfiguration.USER_BANNED) { 7448 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7449 WifiManager.NOT_AUTHORIZED); 7450 break; 7451 } 7452 7453 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7454 7455 /* Tell autojoin the user did try to connect to that network if from settings */ 7456 boolean persist = 7457 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7458 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7459 7460 mWifiConfigStore.setLastSelectedConfiguration(netId); 7461 7462 didDisconnect = false; 7463 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7464 && mLastNetworkId != netId) { 7465 /** Supplicant will ignore the reconnect if we are currently associated, 7466 * hence trigger a disconnect 7467 */ 7468 didDisconnect = true; 7469 mWifiNative.disconnect(); 7470 } 7471 7472 // Make sure the network is enabled, since supplicant will not reenable it 7473 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7474 7475 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7476 message.sendingUid) && mWifiNative.reconnect()) { 7477 lastConnectAttempt = System.currentTimeMillis(); 7478 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7479 7480 /* The state tracker handles enabling networks upon completion/failure */ 7481 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7482 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7483 if (didDisconnect) { 7484 /* Expect a disconnection from the old connection */ 7485 transitionTo(mDisconnectingState); 7486 } else if (updatedExisting && getCurrentState() == mConnectedState && 7487 getCurrentWifiConfiguration().networkId == netId) { 7488 // Update the current set of network capabilities, but stay in the 7489 // current state. 7490 updateCapabilities(config); 7491 } else { 7492 /** 7493 * Directly go to disconnected state where we 7494 * process the connection events from supplicant 7495 **/ 7496 transitionTo(mDisconnectedState); 7497 } 7498 } else { 7499 loge("Failed to connect config: " + config + " netId: " + netId); 7500 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7501 WifiManager.ERROR); 7502 break; 7503 } 7504 break; 7505 case WifiManager.SAVE_NETWORK: 7506 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7507 // Fall thru 7508 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7509 lastSavedConfigurationAttempt = null; // Used for debug 7510 config = (WifiConfiguration) message.obj; 7511 if (config == null) { 7512 loge("ERROR: SAVE_NETWORK with null configuration" 7513 + mSupplicantStateTracker.getSupplicantStateName() 7514 + " my state " + getCurrentState().getName()); 7515 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7516 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7517 WifiManager.ERROR); 7518 break; 7519 } 7520 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7521 int nid = config.networkId; 7522 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7523 + " config=" + config.SSID 7524 + " nid=" + config.networkId 7525 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7526 + " my state " + getCurrentState().getName()); 7527 7528 // Only record the uid if this is user initiated 7529 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7530 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7531 /* onlyAnnotate */ false)) { 7532 loge("Not authorized to update network " 7533 + " config=" + config.SSID 7534 + " cnid=" + config.networkId 7535 + " uid=" + message.sendingUid); 7536 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7537 WifiManager.NOT_AUTHORIZED); 7538 break; 7539 } 7540 7541 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7542 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7543 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7544 if (result.hasIpChanged()) { 7545 // The currently connection configuration was changed 7546 // We switched from DHCP to static or from static to DHCP, or the 7547 // static IP address has changed. 7548 log("Reconfiguring IP on connection"); 7549 // TODO: clear addresses and disable IPv6 7550 // to simplify obtainingIpState. 7551 transitionTo(mObtainingIpState); 7552 } 7553 if (result.hasProxyChanged()) { 7554 log("Reconfiguring proxy on connection"); 7555 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7556 } 7557 } 7558 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7559 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7560 7561 if (VDBG) { 7562 loge("Success save network nid=" 7563 + Integer.toString(result.getNetworkId())); 7564 } 7565 7566 synchronized(mScanResultCache) { 7567 /** 7568 * If the command comes from WifiManager, then 7569 * tell autojoin the user did try to modify and save that network, 7570 * and interpret the SAVE_NETWORK as a request to connect 7571 */ 7572 boolean user = message.what == WifiManager.SAVE_NETWORK; 7573 7574 // Did this connect come from settings 7575 boolean persistConnect = 7576 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7577 7578 if (user) { 7579 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7580 mWifiConfigStore.writeKnownNetworkHistory(false); 7581 } 7582 7583 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7584 , user, persistConnect); 7585 mWifiAutoJoinController.attemptAutoJoin(); 7586 } 7587 } else { 7588 loge("Failed to save network"); 7589 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7590 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7591 WifiManager.ERROR); 7592 } 7593 break; 7594 case WifiManager.FORGET_NETWORK: 7595 // Debug only, remember last configuration that was forgotten 7596 WifiConfiguration toRemove 7597 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7598 if (toRemove == null) { 7599 lastForgetConfigurationAttempt = null; 7600 } else { 7601 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7602 } 7603 // check that the caller owns this network 7604 netId = message.arg1; 7605 7606 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7607 /* onlyAnnotate */ false)) { 7608 loge("Not authorized to forget network " 7609 + " cnid=" + netId 7610 + " uid=" + message.sendingUid); 7611 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7612 WifiManager.NOT_AUTHORIZED); 7613 break; 7614 } 7615 7616 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7617 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7618 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7619 (WifiConfiguration) message.obj); 7620 } else { 7621 loge("Failed to forget network"); 7622 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7623 WifiManager.ERROR); 7624 } 7625 break; 7626 case WifiManager.START_WPS: 7627 WpsInfo wpsInfo = (WpsInfo) message.obj; 7628 WpsResult wpsResult; 7629 switch (wpsInfo.setup) { 7630 case WpsInfo.PBC: 7631 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7632 break; 7633 case WpsInfo.KEYPAD: 7634 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7635 break; 7636 case WpsInfo.DISPLAY: 7637 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7638 break; 7639 default: 7640 wpsResult = new WpsResult(Status.FAILURE); 7641 loge("Invalid setup for WPS"); 7642 break; 7643 } 7644 mWifiConfigStore.setLastSelectedConfiguration 7645 (WifiConfiguration.INVALID_NETWORK_ID); 7646 if (wpsResult.status == Status.SUCCESS) { 7647 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7648 transitionTo(mWpsRunningState); 7649 } else { 7650 loge("Failed to start WPS with config " + wpsInfo.toString()); 7651 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7652 } 7653 break; 7654 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7655 if (DBG) log("Network connection established"); 7656 mLastNetworkId = message.arg1; 7657 mLastBssid = (String) message.obj; 7658 7659 mWifiInfo.setBSSID(mLastBssid); 7660 mWifiInfo.setNetworkId(mLastNetworkId); 7661 7662 sendNetworkStateChangeBroadcast(mLastBssid); 7663 transitionTo(mObtainingIpState); 7664 break; 7665 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7666 // Calling handleNetworkDisconnect here is redundant because we might already 7667 // have called it when leaving L2ConnectedState to go to disconnecting state 7668 // or thru other path 7669 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7670 // if they are valid, and only in this case call handleNEtworkDisconnect, 7671 // TODO: this should be fixed for a L MR release 7672 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7673 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7674 // at the chip etc... 7675 if (DBG) log("ConnectModeState: Network connection lost "); 7676 handleNetworkDisconnect(); 7677 transitionTo(mDisconnectedState); 7678 break; 7679 case CMD_PNO_NETWORK_FOUND: 7680 processPnoNetworkFound((ScanResult[])message.obj); 7681 break; 7682 default: 7683 return NOT_HANDLED; 7684 } 7685 return HANDLED; 7686 } 7687 } 7688 7689 private void updateCapabilities(WifiConfiguration config) { 7690 if (config.ephemeral) { 7691 mNetworkCapabilities.removeCapability( 7692 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7693 } else { 7694 mNetworkCapabilities.addCapability( 7695 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7696 } 7697 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7698 } 7699 7700 private class WifiNetworkAgent extends NetworkAgent { 7701 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7702 NetworkCapabilities nc, LinkProperties lp, int score) { 7703 super(l, c, TAG, ni, nc, lp, score); 7704 } 7705 protected void unwanted() { 7706 // Ignore if we're not the current networkAgent. 7707 if (this != mNetworkAgent) return; 7708 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7709 + Integer.toString(mWifiInfo.score)); 7710 unwantedNetwork(network_status_unwanted_disconnect); 7711 } 7712 7713 @Override 7714 protected void networkStatus(int status) { 7715 if (this != mNetworkAgent) return; 7716 if (status == NetworkAgent.INVALID_NETWORK) { 7717 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7718 + Integer.toString(mWifiInfo.score)); 7719 unwantedNetwork(network_status_unwanted_disable_autojoin); 7720 } else if (status == NetworkAgent.VALID_NETWORK) { 7721 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7722 + Integer.toString(mWifiInfo.score)); 7723 doNetworkStatus(status); 7724 } 7725 } 7726 7727 @Override 7728 protected void saveAcceptUnvalidated(boolean accept) { 7729 if (this != mNetworkAgent) return; 7730 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7731 } 7732 } 7733 7734 void unwantedNetwork(int reason) { 7735 sendMessage(CMD_UNWANTED_NETWORK, reason); 7736 } 7737 7738 void doNetworkStatus(int status) { 7739 sendMessage(CMD_NETWORK_STATUS, status); 7740 } 7741 7742 // rfc4186 & rfc4187: 7743 // create Permanent Identity base on IMSI, 7744 // identity = usernam@realm 7745 // with username = prefix | IMSI 7746 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7747 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7748 String mcc; 7749 String mnc; 7750 String prefix; 7751 7752 if (imsi == null || imsi.isEmpty()) 7753 return ""; 7754 7755 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7756 prefix = "1"; 7757 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7758 prefix = "0"; 7759 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7760 prefix = "6"; 7761 else // not a valide EapMethod 7762 return ""; 7763 7764 /* extract mcc & mnc from mccMnc */ 7765 if (mccMnc != null && !mccMnc.isEmpty()) { 7766 mcc = mccMnc.substring(0, 3); 7767 mnc = mccMnc.substring(3); 7768 if (mnc.length() == 2) 7769 mnc = "0" + mnc; 7770 } else { 7771 // extract mcc & mnc from IMSI, assume mnc size is 3 7772 mcc = imsi.substring(0, 3); 7773 mnc = imsi.substring(3, 6); 7774 } 7775 7776 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7777 } 7778 7779 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7780 if (config == null) 7781 return false; 7782 7783 // We are still seeing a fairly high power consumption triggered by autojoin scans 7784 // Hence do partial scans only for PSK configuration that are roamable since the 7785 // primary purpose of the partial scans is roaming. 7786 // Full badn scans with exponential backoff for the purpose or extended roaming and 7787 // network switching are performed unconditionally. 7788 ScanDetailCache scanDetailCache = 7789 mWifiConfigStore.getScanDetailCache(config); 7790 if (scanDetailCache == null 7791 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7792 || scanDetailCache.size() > 6) { 7793 //return true but to not trigger the scan 7794 return true; 7795 } 7796 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7797 ONE_HOUR_MILLI, restrictChannelList); 7798 if (channels != null && channels.size() != 0) { 7799 StringBuilder freqs = new StringBuilder(); 7800 boolean first = true; 7801 for (Integer channel : channels) { 7802 if (!first) 7803 freqs.append(","); 7804 freqs.append(channel.toString()); 7805 first = false; 7806 } 7807 //if (DBG) { 7808 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7809 //} 7810 // Call wifi native to start the scan 7811 if (startScanNative( 7812 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7813 freqs.toString())) { 7814 // Only count battery consumption if scan request is accepted 7815 noteScanStart(SCAN_ALARM_SOURCE, null); 7816 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7817 } else { 7818 // used for debug only, mark scan as failed 7819 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7820 } 7821 return true; 7822 } else { 7823 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7824 return false; 7825 } 7826 } 7827 7828 void clearCurrentConfigBSSID(String dbg) { 7829 // Clear the bssid in the current config's network block 7830 WifiConfiguration config = getCurrentWifiConfiguration(); 7831 if (config == null) 7832 return; 7833 clearConfigBSSID(config, dbg); 7834 } 7835 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7836 if (config == null) 7837 return; 7838 if (DBG) { 7839 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7840 + " config.bssid " + config.BSSID); 7841 } 7842 config.autoJoinBSSID = "any"; 7843 config.BSSID = "any"; 7844 if (DBG) { 7845 loge(dbg + " " + config.SSID 7846 + " nid=" + Integer.toString(config.networkId)); 7847 } 7848 mWifiConfigStore.saveWifiConfigBSSID(config); 7849 } 7850 7851 class L2ConnectedState extends State { 7852 @Override 7853 public void enter() { 7854 mRssiPollToken++; 7855 if (mEnableRssiPolling) { 7856 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7857 } 7858 if (mNetworkAgent != null) { 7859 loge("Have NetworkAgent when entering L2Connected"); 7860 setNetworkDetailedState(DetailedState.DISCONNECTED); 7861 } 7862 setNetworkDetailedState(DetailedState.CONNECTING); 7863 7864 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 7865 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7866 } 7867 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7868 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7869 mLinkProperties, 60); 7870 7871 // We must clear the config BSSID, as the wifi chipset may decide to roam 7872 // from this point on and having the BSSID specified in the network block would 7873 // cause the roam to faile and the device to disconnect 7874 clearCurrentConfigBSSID("L2ConnectedState"); 7875 7876 try { 7877 mIpReachabilityMonitor = new IpReachabilityMonitor( 7878 mInterfaceName, 7879 new IpReachabilityMonitor.Callback() { 7880 @Override 7881 public void notifyLost(InetAddress ip, String logMsg) { 7882 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 7883 } 7884 }); 7885 } catch (IllegalArgumentException e) { 7886 Log.wtf("Failed to create IpReachabilityMonitor", e); 7887 } 7888 } 7889 7890 @Override 7891 public void exit() { 7892 if (mIpReachabilityMonitor != null) { 7893 mIpReachabilityMonitor.stop(); 7894 mIpReachabilityMonitor = null; 7895 } 7896 7897 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7898 // Bug: 15347363 7899 // For paranoia's sake, call handleNetworkDisconnect 7900 // only if BSSID is null or last networkId 7901 // is not invalid. 7902 if (DBG) { 7903 StringBuilder sb = new StringBuilder(); 7904 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7905 if (mLastBssid !=null) { 7906 sb.append(" ").append(mLastBssid); 7907 } 7908 } 7909 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7910 handleNetworkDisconnect(); 7911 } 7912 } 7913 7914 @Override 7915 public boolean processMessage(Message message) { 7916 logStateAndMessage(message, getClass().getSimpleName()); 7917 7918 switch (message.what) { 7919 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7920 handlePreDhcpSetup(); 7921 break; 7922 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7923 handlePostDhcpSetup(); 7924 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7925 if (DBG) log("WifiStateMachine DHCP successful"); 7926 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7927 // We advance to mConnectedState because handleIPv4Success will call 7928 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7929 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7930 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 7931 if (DBG) { 7932 int count = -1; 7933 WifiConfiguration config = getCurrentWifiConfiguration(); 7934 if (config != null) { 7935 count = config.numConnectionFailures; 7936 } 7937 log("WifiStateMachine DHCP failure count=" + count); 7938 } 7939 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7940 // As above, we transition to mDisconnectingState via updateLinkProperties. 7941 } 7942 break; 7943 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7944 handleSuccessfulIpConfiguration(); 7945 sendConnectedState(); 7946 transitionTo(mConnectedState); 7947 break; 7948 case CMD_IP_CONFIGURATION_LOST: 7949 // Get Link layer stats so that we get fresh tx packet counters. 7950 getWifiLinkLayerStats(true); 7951 handleIpConfigurationLost(); 7952 transitionTo(mDisconnectingState); 7953 break; 7954 case CMD_IP_REACHABILITY_LOST: 7955 if (DBG && message.obj != null) log((String) message.obj); 7956 handleIpReachabilityLost(); 7957 transitionTo(mDisconnectingState); 7958 break; 7959 case CMD_DISCONNECT: 7960 mWifiNative.disconnect(); 7961 transitionTo(mDisconnectingState); 7962 break; 7963 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7964 if (message.arg1 == 1) { 7965 mWifiNative.disconnect(); 7966 mTemporarilyDisconnectWifi = true; 7967 transitionTo(mDisconnectingState); 7968 } 7969 break; 7970 case CMD_SET_OPERATIONAL_MODE: 7971 if (message.arg1 != CONNECT_MODE) { 7972 sendMessage(CMD_DISCONNECT); 7973 deferMessage(message); 7974 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7975 noteWifiDisabledWhileAssociated(); 7976 } 7977 } 7978 mWifiConfigStore. 7979 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7980 break; 7981 case CMD_SET_COUNTRY_CODE: 7982 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7983 deferMessage(message); 7984 break; 7985 case CMD_START_SCAN: 7986 //if (DBG) { 7987 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7988 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7989 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7990 + " targetRoamBSSID=" + mTargetRoamBSSID 7991 + " RSSI=" + mWifiInfo.getRssi()); 7992 //} 7993 if (message.arg1 == SCAN_ALARM_SOURCE) { 7994 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7995 // not be processed) and restart the scan if needed 7996 boolean shouldScan = 7997 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7998 if (!checkAndRestartDelayedScan(message.arg2, 7999 shouldScan, 8000 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8001 null, null)) { 8002 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8003 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 8004 + message.arg1 8005 + " " + message.arg2 + ", " + mDelayedScanCounter 8006 + " -> obsolete"); 8007 return HANDLED; 8008 } 8009 if (mP2pConnected.get()) { 8010 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 8011 + message.arg1 8012 + " " + message.arg2 + ", " + mDelayedScanCounter 8013 + " ignore because P2P is connected"); 8014 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8015 return HANDLED; 8016 } 8017 boolean tryFullBandScan = false; 8018 boolean restrictChannelList = false; 8019 long now_ms = System.currentTimeMillis(); 8020 if (DBG) { 8021 loge("WifiStateMachine CMD_START_SCAN with age=" 8022 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8023 + " interval=" + fullBandConnectedTimeIntervalMilli 8024 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8025 } 8026 if (mWifiInfo != null) { 8027 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8028 (now_ms - lastFullBandConnectedTimeMilli) 8029 > fullBandConnectedTimeIntervalMilli) { 8030 if (DBG) { 8031 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 8032 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8033 + " interval=" + fullBandConnectedTimeIntervalMilli 8034 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8035 } 8036 tryFullBandScan = true; 8037 } 8038 8039 if (mWifiInfo.txSuccessRate > 8040 mWifiConfigStore.maxTxPacketForFullScans 8041 || mWifiInfo.rxSuccessRate > 8042 mWifiConfigStore.maxRxPacketForFullScans) { 8043 // Too much traffic at the interface, hence no full band scan 8044 if (DBG) { 8045 loge("WifiStateMachine CMD_START_SCAN " + 8046 "prevent full band scan due to pkt rate"); 8047 } 8048 tryFullBandScan = false; 8049 } 8050 8051 if (mWifiInfo.txSuccessRate > 8052 mWifiConfigStore.maxTxPacketForPartialScans 8053 || mWifiInfo.rxSuccessRate > 8054 mWifiConfigStore.maxRxPacketForPartialScans) { 8055 // Don't scan if lots of packets are being sent 8056 restrictChannelList = true; 8057 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8058 if (DBG) { 8059 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 8060 + " ...and ignore scans" 8061 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8062 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8063 } 8064 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8065 return HANDLED; 8066 } 8067 } 8068 } 8069 8070 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8071 if (DBG) { 8072 loge("WifiStateMachine CMD_START_SCAN full=" + 8073 tryFullBandScan); 8074 } 8075 if (currentConfiguration != null) { 8076 if (fullBandConnectedTimeIntervalMilli 8077 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8078 // Sanity 8079 fullBandConnectedTimeIntervalMilli 8080 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8081 } 8082 if (tryFullBandScan) { 8083 lastFullBandConnectedTimeMilli = now_ms; 8084 if (fullBandConnectedTimeIntervalMilli 8085 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8086 // Increase the interval 8087 fullBandConnectedTimeIntervalMilli 8088 = fullBandConnectedTimeIntervalMilli 8089 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8090 8091 if (DBG) { 8092 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8093 + fullBandConnectedTimeIntervalMilli); 8094 } 8095 } 8096 handleScanRequest( 8097 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8098 } else { 8099 if (!startScanForConfiguration( 8100 currentConfiguration, restrictChannelList)) { 8101 if (DBG) { 8102 loge("WifiStateMachine starting scan, " + 8103 " did not find channels -> full"); 8104 } 8105 lastFullBandConnectedTimeMilli = now_ms; 8106 if (fullBandConnectedTimeIntervalMilli 8107 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8108 // Increase the interval 8109 fullBandConnectedTimeIntervalMilli 8110 = fullBandConnectedTimeIntervalMilli 8111 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8112 8113 if (DBG) { 8114 loge("WifiStateMachine CMD_START_SCAN bump interval =" 8115 + fullBandConnectedTimeIntervalMilli); 8116 } 8117 } 8118 handleScanRequest( 8119 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8120 } 8121 } 8122 8123 } else { 8124 loge("CMD_START_SCAN : connected mode and no configuration"); 8125 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8126 } 8127 } else { 8128 // Not scan alarm source 8129 return NOT_HANDLED; 8130 } 8131 break; 8132 /* Ignore connection to same network */ 8133 case WifiManager.CONNECT_NETWORK: 8134 int netId = message.arg1; 8135 if (mWifiInfo.getNetworkId() == netId) { 8136 break; 8137 } 8138 return NOT_HANDLED; 8139 /* Ignore */ 8140 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8141 break; 8142 case CMD_RSSI_POLL: 8143 if (message.arg1 == mRssiPollToken) { 8144 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8145 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8146 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8147 if (stats != null) { 8148 // Sanity check the results provided by driver 8149 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8150 && (stats.rssi_mgmt == 0 8151 || stats.beacon_rx == 0)) { 8152 stats = null; 8153 } 8154 } 8155 // Get Info and continue polling 8156 fetchRssiLinkSpeedAndFrequencyNative(); 8157 calculateWifiScore(stats); 8158 } 8159 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8160 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8161 8162 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8163 } else { 8164 // Polling has completed 8165 } 8166 break; 8167 case CMD_ENABLE_RSSI_POLL: 8168 cleanWifiScore(); 8169 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8170 mEnableRssiPolling = (message.arg1 == 1); 8171 } else { 8172 mEnableRssiPolling = false; 8173 } 8174 mRssiPollToken++; 8175 if (mEnableRssiPolling) { 8176 // First poll 8177 fetchRssiLinkSpeedAndFrequencyNative(); 8178 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8179 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8180 } 8181 break; 8182 case WifiManager.RSSI_PKTCNT_FETCH: 8183 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8184 fetchRssiLinkSpeedAndFrequencyNative(); 8185 info.rssi = mWifiInfo.getRssi(); 8186 fetchPktcntNative(info); 8187 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8188 break; 8189 case CMD_DELAYED_NETWORK_DISCONNECT: 8190 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8191 8192 // Ignore if we are not debouncing 8193 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8194 + message.arg1); 8195 return HANDLED; 8196 } else { 8197 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8198 + message.arg1); 8199 8200 linkDebouncing = false; 8201 // If we are still debouncing while this message comes, 8202 // it means we were not able to reconnect within the alloted time 8203 // = LINK_FLAPPING_DEBOUNCE_MSEC 8204 // and thus, trigger a real disconnect 8205 handleNetworkDisconnect(); 8206 transitionTo(mDisconnectedState); 8207 } 8208 break; 8209 case CMD_ASSOCIATED_BSSID: 8210 if ((String) message.obj == null) { 8211 loge("Associated command w/o BSSID"); 8212 break; 8213 } 8214 mLastBssid = (String) message.obj; 8215 if (mLastBssid != null 8216 && (mWifiInfo.getBSSID() == null 8217 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8218 mWifiInfo.setBSSID((String) message.obj); 8219 sendNetworkStateChangeBroadcast(mLastBssid); 8220 } 8221 break; 8222 default: 8223 return NOT_HANDLED; 8224 } 8225 8226 return HANDLED; 8227 } 8228 } 8229 8230 class ObtainingIpState extends State { 8231 @Override 8232 public void enter() { 8233 if (DBG) { 8234 String key = ""; 8235 if (getCurrentWifiConfiguration() != null) { 8236 key = getCurrentWifiConfiguration().configKey(); 8237 } 8238 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8239 + " " + key + " " 8240 + " roam=" + mAutoRoaming 8241 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8242 + " watchdog= " + obtainingIpWatchdogCount); 8243 } 8244 8245 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8246 // We might still be roaming 8247 linkDebouncing = false; 8248 8249 // Send event to CM & network change broadcast 8250 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8251 8252 // We must clear the config BSSID, as the wifi chipset may decide to roam 8253 // from this point on and having the BSSID specified in the network block would 8254 // cause the roam to faile and the device to disconnect 8255 clearCurrentConfigBSSID("ObtainingIpAddress"); 8256 8257 try { 8258 mNwService.enableIpv6(mInterfaceName); 8259 } catch (RemoteException re) { 8260 loge("Failed to enable IPv6: " + re); 8261 } catch (IllegalStateException e) { 8262 loge("Failed to enable IPv6: " + e); 8263 } 8264 8265 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8266 if (isRoaming()) { 8267 renewDhcp(); 8268 } else { 8269 // Remove any IP address on the interface in case we're switching from static 8270 // IP configuration to DHCP. This is safe because if we get here when not 8271 // roaming, we don't have a usable address. 8272 clearIPv4Address(mInterfaceName); 8273 startDhcp(); 8274 } 8275 obtainingIpWatchdogCount++; 8276 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8277 // Get Link layer stats so as we get fresh tx packet counters 8278 getWifiLinkLayerStats(true); 8279 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8280 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8281 } else { 8282 // stop any running dhcp before assigning static IP 8283 stopDhcp(); 8284 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8285 mLastNetworkId); 8286 if (config.ipAddress == null) { 8287 loge("Static IP lacks address"); 8288 sendMessage(CMD_STATIC_IP_FAILURE); 8289 } else { 8290 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8291 ifcg.setLinkAddress(config.ipAddress); 8292 ifcg.setInterfaceUp(); 8293 try { 8294 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8295 if (DBG) log("Static IP configuration succeeded"); 8296 DhcpResults dhcpResults = new DhcpResults(config); 8297 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8298 } catch (RemoteException re) { 8299 loge("Static IP configuration failed: " + re); 8300 sendMessage(CMD_STATIC_IP_FAILURE); 8301 } catch (IllegalStateException e) { 8302 loge("Static IP configuration failed: " + e); 8303 sendMessage(CMD_STATIC_IP_FAILURE); 8304 } 8305 } 8306 } 8307 } 8308 @Override 8309 public boolean processMessage(Message message) { 8310 logStateAndMessage(message, getClass().getSimpleName()); 8311 8312 switch(message.what) { 8313 case CMD_STATIC_IP_SUCCESS: 8314 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8315 break; 8316 case CMD_STATIC_IP_FAILURE: 8317 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8318 break; 8319 case CMD_AUTO_CONNECT: 8320 case CMD_AUTO_ROAM: 8321 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8322 break; 8323 case WifiManager.SAVE_NETWORK: 8324 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8325 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8326 deferMessage(message); 8327 break; 8328 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8329 case CMD_SET_HIGH_PERF_MODE: 8330 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8331 deferMessage(message); 8332 break; 8333 /* Defer scan request since we should not switch to other channels at DHCP */ 8334 case CMD_START_SCAN: 8335 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8336 deferMessage(message); 8337 break; 8338 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8339 if (message.arg1 == obtainingIpWatchdogCount) { 8340 loge("ObtainingIpAddress: Watchdog Triggered, count=" 8341 + obtainingIpWatchdogCount); 8342 handleIpConfigurationLost(); 8343 transitionTo(mDisconnectingState); 8344 break; 8345 } 8346 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8347 break; 8348 default: 8349 return NOT_HANDLED; 8350 } 8351 return HANDLED; 8352 } 8353 } 8354 8355 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8356 // sets mPoorNetworkDetectionEnabled to false. 8357 class VerifyingLinkState extends State { 8358 @Override 8359 public void enter() { 8360 log(getName() + " enter"); 8361 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8362 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8363 sendNetworkStateChangeBroadcast(mLastBssid); 8364 // End roaming 8365 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8366 } 8367 @Override 8368 public boolean processMessage(Message message) { 8369 logStateAndMessage(message, getClass().getSimpleName()); 8370 8371 switch (message.what) { 8372 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8373 // Stay here 8374 log(getName() + " POOR_LINK_DETECTED: no transition"); 8375 break; 8376 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8377 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8378 sendConnectedState(); 8379 transitionTo(mConnectedState); 8380 break; 8381 default: 8382 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8383 return NOT_HANDLED; 8384 } 8385 return HANDLED; 8386 } 8387 } 8388 8389 private void sendConnectedState() { 8390 // If this network was explicitly selected by the user, evaluate whether to call 8391 // explicitlySelected() so the system can treat it appropriately. 8392 WifiConfiguration config = getCurrentWifiConfiguration(); 8393 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8394 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8395 if (DBG) { 8396 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8397 } 8398 if (prompt) { 8399 // Selected by the user via Settings or QuickSettings. If this network has Internet 8400 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8401 // really want to switch, or has already confirmed and selected "Don't ask again". 8402 if (DBG) { 8403 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8404 } 8405 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8406 } 8407 } 8408 8409 setNetworkDetailedState(DetailedState.CONNECTED); 8410 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8411 sendNetworkStateChangeBroadcast(mLastBssid); 8412 } 8413 8414 class RoamingState extends State { 8415 boolean mAssociated; 8416 @Override 8417 public void enter() { 8418 if (DBG) { 8419 log("RoamingState Enter" 8420 + " mScreenOn=" + mScreenOn ); 8421 } 8422 setScanAlarm(false); 8423 8424 // Make sure we disconnect if roaming fails 8425 roamWatchdogCount++; 8426 loge("Start Roam Watchdog " + roamWatchdogCount); 8427 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8428 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8429 mAssociated = false; 8430 } 8431 @Override 8432 public boolean processMessage(Message message) { 8433 logStateAndMessage(message, getClass().getSimpleName()); 8434 WifiConfiguration config; 8435 switch (message.what) { 8436 case CMD_IP_CONFIGURATION_LOST: 8437 config = getCurrentWifiConfiguration(); 8438 if (config != null) { 8439 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8440 mWifiConfigStore.noteRoamingFailure(config, 8441 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8442 } 8443 return NOT_HANDLED; 8444 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8445 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8446 return HANDLED; 8447 case CMD_UNWANTED_NETWORK: 8448 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8449 return HANDLED; 8450 case CMD_SET_OPERATIONAL_MODE: 8451 if (message.arg1 != CONNECT_MODE) { 8452 deferMessage(message); 8453 } 8454 break; 8455 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8456 /** 8457 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8458 * before NETWORK_DISCONNECTION_EVENT 8459 * And there is an associated BSSID corresponding to our target BSSID, then 8460 * we have missed the network disconnection, transition to mDisconnectedState 8461 * and handle the rest of the events there. 8462 */ 8463 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8464 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8465 || stateChangeResult.state == SupplicantState.INACTIVE 8466 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8467 if (DBG) { 8468 log("STATE_CHANGE_EVENT in roaming state " 8469 + stateChangeResult.toString() ); 8470 } 8471 if (stateChangeResult.BSSID != null 8472 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8473 handleNetworkDisconnect(); 8474 transitionTo(mDisconnectedState); 8475 } 8476 } 8477 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8478 // We completed the layer2 roaming part 8479 mAssociated = true; 8480 if (stateChangeResult.BSSID != null) { 8481 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8482 } 8483 } 8484 break; 8485 case CMD_ROAM_WATCHDOG_TIMER: 8486 if (roamWatchdogCount == message.arg1) { 8487 if (DBG) log("roaming watchdog! -> disconnect"); 8488 mRoamFailCount++; 8489 handleNetworkDisconnect(); 8490 mWifiNative.disconnect(); 8491 transitionTo(mDisconnectedState); 8492 } 8493 break; 8494 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8495 if (mAssociated) { 8496 if (DBG) log("roaming and Network connection established"); 8497 mLastNetworkId = message.arg1; 8498 mLastBssid = (String) message.obj; 8499 mWifiInfo.setBSSID(mLastBssid); 8500 mWifiInfo.setNetworkId(mLastNetworkId); 8501 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8502 sendNetworkStateChangeBroadcast(mLastBssid); 8503 transitionTo(mObtainingIpState); 8504 } else { 8505 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8506 } 8507 break; 8508 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8509 // Throw away but only if it corresponds to the network we're roaming to 8510 String bssid = (String)message.obj; 8511 if (true) { 8512 String target = ""; 8513 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8514 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8515 + " BSSID=" + bssid 8516 + " target=" + target); 8517 } 8518 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8519 handleNetworkDisconnect(); 8520 transitionTo(mDisconnectedState); 8521 } 8522 break; 8523 case WifiMonitor.SSID_TEMP_DISABLED: 8524 // Auth error while roaming 8525 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8526 + " id=" + Integer.toString(message.arg1) 8527 + " isRoaming=" + isRoaming() 8528 + " roam=" + Integer.toString(mAutoRoaming)); 8529 if (message.arg1 == mLastNetworkId) { 8530 config = getCurrentWifiConfiguration(); 8531 if (config != null) { 8532 mWifiLogger.captureBugReportData( 8533 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8534 mWifiConfigStore.noteRoamingFailure(config, 8535 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8536 } 8537 handleNetworkDisconnect(); 8538 transitionTo(mDisconnectingState); 8539 } 8540 return NOT_HANDLED; 8541 case CMD_START_SCAN: 8542 deferMessage(message); 8543 break; 8544 default: 8545 return NOT_HANDLED; 8546 } 8547 return HANDLED; 8548 } 8549 8550 @Override 8551 public void exit() { 8552 loge("WifiStateMachine: Leaving Roaming state"); 8553 } 8554 } 8555 8556 class ConnectedState extends State { 8557 @Override 8558 public void enter() { 8559 String address; 8560 updateDefaultRouteMacAddress(1000); 8561 if (DBG) { 8562 log("Enter ConnectedState " 8563 + " mScreenOn=" + mScreenOn 8564 + " scanperiod=" 8565 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8566 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8567 + mWifiConfigStore.enableHalBasedPno.get() 8568 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8569 } 8570 if (mScreenOn 8571 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8572 if (useHalBasedAutoJoinOffload()) { 8573 startGScanConnectedModeOffload("connectedEnter"); 8574 } else { 8575 // restart scan alarm 8576 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8577 null, null); 8578 } 8579 } 8580 registerConnected(); 8581 lastConnectAttempt = 0; 8582 targetWificonfiguration = null; 8583 // Paranoia 8584 linkDebouncing = false; 8585 8586 // Not roaming anymore 8587 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8588 8589 if (testNetworkDisconnect) { 8590 testNetworkDisconnectCounter++; 8591 loge("ConnectedState Enter start disconnect test " + 8592 testNetworkDisconnectCounter); 8593 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8594 testNetworkDisconnectCounter, 0), 15000); 8595 } 8596 8597 // Reenable all networks, allow for hidden networks to be scanned 8598 mWifiConfigStore.enableAllNetworks(); 8599 8600 mLastDriverRoamAttempt = 0; 8601 8602 //startLazyRoam(); 8603 } 8604 @Override 8605 public boolean processMessage(Message message) { 8606 WifiConfiguration config = null; 8607 logStateAndMessage(message, getClass().getSimpleName()); 8608 8609 switch (message.what) { 8610 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8611 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8612 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8613 return HANDLED; 8614 } 8615 /* If we are still in Disconnected state after having discovered a valid 8616 * network this means autojoin didnt managed to associate to the network, 8617 * then restart PNO so as we will try associating to it again. 8618 */ 8619 if (useHalBasedAutoJoinOffload()) { 8620 if (mGScanStartTimeMilli == 0) { 8621 // If offload is not started, then start it... 8622 startGScanConnectedModeOffload("connectedRestart"); 8623 } else { 8624 // If offload is already started, then check if we need to increase 8625 // the scan period and restart the Gscan 8626 long now = System.currentTimeMillis(); 8627 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8628 && ((now - mGScanStartTimeMilli) 8629 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8630 && (mGScanPeriodMilli 8631 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8632 { 8633 startConnectedGScan("Connected restart gscan"); 8634 } 8635 } 8636 } 8637 break; 8638 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8639 updateAssociatedScanPermission(); 8640 break; 8641 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8642 if (DBG) log("Watchdog reports poor link"); 8643 transitionTo(mVerifyingLinkState); 8644 break; 8645 case CMD_UNWANTED_NETWORK: 8646 if (message.arg1 == network_status_unwanted_disconnect) { 8647 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8648 mWifiNative.disconnect(); 8649 transitionTo(mDisconnectingState); 8650 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8651 config = getCurrentWifiConfiguration(); 8652 if (config != null) { 8653 // Disable autojoin 8654 config.numNoInternetAccessReports += 1; 8655 config.dirty = true; 8656 mWifiConfigStore.writeKnownNetworkHistory(false); 8657 } 8658 } 8659 return HANDLED; 8660 case CMD_NETWORK_STATUS: 8661 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8662 config = getCurrentWifiConfiguration(); 8663 if (config != null) { 8664 if (!config.validatedInternetAccess 8665 || config.numNoInternetAccessReports != 0) { 8666 config.dirty = true; 8667 } 8668 // re-enable autojoin 8669 config.numNoInternetAccessReports = 0; 8670 config.validatedInternetAccess = true; 8671 mWifiConfigStore.writeKnownNetworkHistory(false); 8672 } 8673 } 8674 return HANDLED; 8675 case CMD_ACCEPT_UNVALIDATED: 8676 boolean accept = (message.arg1 != 0); 8677 config = getCurrentWifiConfiguration(); 8678 if (config != null) { 8679 config.noInternetAccessExpected = accept; 8680 } 8681 return HANDLED; 8682 case CMD_TEST_NETWORK_DISCONNECT: 8683 // Force a disconnect 8684 if (message.arg1 == testNetworkDisconnectCounter) { 8685 mWifiNative.disconnect(); 8686 } 8687 break; 8688 case CMD_ASSOCIATED_BSSID: 8689 // ASSOCIATING to a new BSSID while already connected, indicates 8690 // that driver is roaming 8691 mLastDriverRoamAttempt = System.currentTimeMillis(); 8692 String toBSSID = (String)message.obj; 8693 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8694 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8695 } 8696 return NOT_HANDLED; 8697 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8698 long lastRoam = 0; 8699 if (mLastDriverRoamAttempt != 0) { 8700 // Calculate time since last driver roam attempt 8701 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8702 mLastDriverRoamAttempt = 0; 8703 } 8704 if (unexpectedDisconnectedReason(message.arg2)) { 8705 mWifiLogger.captureBugReportData( 8706 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8707 } 8708 config = getCurrentWifiConfiguration(); 8709 if (mScreenOn 8710 && !linkDebouncing 8711 && config != null 8712 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8713 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8714 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8715 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8716 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8717 && mWifiInfo.getRssi() > 8718 WifiConfiguration.BAD_RSSI_24) 8719 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8720 && mWifiInfo.getRssi() > 8721 WifiConfiguration.BAD_RSSI_5))) { 8722 // Start de-bouncing the L2 disconnection: 8723 // this L2 disconnection might be spurious. 8724 // Hence we allow 7 seconds for the state machine to try 8725 // to reconnect, go thru the 8726 // roaming cycle and enter Obtaining IP address 8727 // before signalling the disconnect to ConnectivityService and L3 8728 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8729 linkDebouncing = true; 8730 8731 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8732 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8733 if (DBG) { 8734 log("NETWORK_DISCONNECTION_EVENT in connected state" 8735 + " BSSID=" + mWifiInfo.getBSSID() 8736 + " RSSI=" + mWifiInfo.getRssi() 8737 + " freq=" + mWifiInfo.getFrequency() 8738 + " reason=" + message.arg2 8739 + " -> debounce"); 8740 } 8741 return HANDLED; 8742 } else { 8743 if (DBG) { 8744 int ajst = -1; 8745 if (config != null) ajst = config.autoJoinStatus; 8746 log("NETWORK_DISCONNECTION_EVENT in connected state" 8747 + " BSSID=" + mWifiInfo.getBSSID() 8748 + " RSSI=" + mWifiInfo.getRssi() 8749 + " freq=" + mWifiInfo.getFrequency() 8750 + " was debouncing=" + linkDebouncing 8751 + " reason=" + message.arg2 8752 + " ajst=" + ajst); 8753 } 8754 } 8755 break; 8756 case CMD_AUTO_ROAM: 8757 // Clear the driver roam indication since we are attempting a framework roam 8758 mLastDriverRoamAttempt = 0; 8759 8760 /* Connect command coming from auto-join */ 8761 ScanResult candidate = (ScanResult)message.obj; 8762 String bssid = "any"; 8763 if (candidate != null && candidate.is5GHz()) { 8764 // Only lock BSSID for 5GHz networks 8765 bssid = candidate.BSSID; 8766 } 8767 int netId = mLastNetworkId; 8768 config = getCurrentWifiConfiguration(); 8769 8770 8771 if (config == null) { 8772 loge("AUTO_ROAM and no config, bail out..."); 8773 break; 8774 } 8775 8776 loge("CMD_AUTO_ROAM sup state " 8777 + mSupplicantStateTracker.getSupplicantStateName() 8778 + " my state " + getCurrentState().getName() 8779 + " nid=" + Integer.toString(netId) 8780 + " config " + config.configKey() 8781 + " roam=" + Integer.toString(message.arg2) 8782 + " to " + bssid 8783 + " targetRoamBSSID " + mTargetRoamBSSID); 8784 8785 /* Save the BSSID so as to lock it @ firmware */ 8786 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8787 loge("AUTO_ROAM nothing to do"); 8788 // Same BSSID, nothing to do 8789 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8790 break; 8791 }; 8792 8793 // Make sure the network is enabled, since supplicant will not re-enable it 8794 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8795 8796 if (deferForUserInput(message, netId, false)) { 8797 break; 8798 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8799 WifiConfiguration.USER_BANNED) { 8800 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8801 WifiManager.NOT_AUTHORIZED); 8802 break; 8803 } 8804 8805 boolean ret = false; 8806 if (mLastNetworkId != netId) { 8807 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8808 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8809 ret = true; 8810 } 8811 } else { 8812 ret = mWifiNative.reassociate(); 8813 } 8814 if (ret) { 8815 lastConnectAttempt = System.currentTimeMillis(); 8816 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8817 8818 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8819 mAutoRoaming = message.arg2; 8820 transitionTo(mRoamingState); 8821 8822 } else { 8823 loge("Failed to connect config: " + config + " netId: " + netId); 8824 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8825 WifiManager.ERROR); 8826 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8827 break; 8828 } 8829 break; 8830 default: 8831 return NOT_HANDLED; 8832 } 8833 return HANDLED; 8834 } 8835 8836 @Override 8837 public void exit() { 8838 loge("WifiStateMachine: Leaving Connected state"); 8839 setScanAlarm(false); 8840 mLastDriverRoamAttempt = 0; 8841 8842 stopLazyRoam(); 8843 8844 mWhiteListedSsids = null; 8845 } 8846 } 8847 8848 class DisconnectingState extends State { 8849 8850 @Override 8851 public void enter() { 8852 8853 if (PDBG) { 8854 loge(" Enter DisconnectingState State scan interval " 8855 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8856 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8857 + " screenOn=" + mScreenOn); 8858 } 8859 8860 // Make sure we disconnect: we enter this state prior to connecting to a new 8861 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 8862 // event which in this case will be indicating that supplicant started to associate. 8863 // In some cases supplicant doesn't ignore the connect requests (it might not 8864 // find the target SSID in its cache), 8865 // Therefore we end up stuck that state, hence the need for the watchdog. 8866 disconnectingWatchdogCount++; 8867 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8868 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8869 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8870 } 8871 8872 @Override 8873 public boolean processMessage(Message message) { 8874 logStateAndMessage(message, getClass().getSimpleName()); 8875 switch (message.what) { 8876 case CMD_SET_OPERATIONAL_MODE: 8877 if (message.arg1 != CONNECT_MODE) { 8878 deferMessage(message); 8879 } 8880 break; 8881 case CMD_START_SCAN: 8882 deferMessage(message); 8883 return HANDLED; 8884 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8885 if (disconnectingWatchdogCount == message.arg1) { 8886 if (DBG) log("disconnecting watchdog! -> disconnect"); 8887 handleNetworkDisconnect(); 8888 transitionTo(mDisconnectedState); 8889 } 8890 break; 8891 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8892 /** 8893 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8894 * we have missed the network disconnection, transition to mDisconnectedState 8895 * and handle the rest of the events there 8896 */ 8897 deferMessage(message); 8898 handleNetworkDisconnect(); 8899 transitionTo(mDisconnectedState); 8900 break; 8901 default: 8902 return NOT_HANDLED; 8903 } 8904 return HANDLED; 8905 } 8906 } 8907 8908 class DisconnectedState extends State { 8909 @Override 8910 public void enter() { 8911 // We dont scan frequently if this is a temporary disconnect 8912 // due to p2p 8913 if (mTemporarilyDisconnectWifi) { 8914 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8915 return; 8916 } 8917 8918 if (PDBG) { 8919 loge(" Enter DisconnectedState scan interval " 8920 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8921 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8922 + " screenOn=" + mScreenOn 8923 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8924 + mWifiConfigStore.enableHalBasedPno.get()); 8925 } 8926 8927 /** clear the roaming state, if we were roaming, we failed */ 8928 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8929 8930 if (useHalBasedAutoJoinOffload()) { 8931 startGScanDisconnectedModeOffload("disconnectedEnter"); 8932 } else { 8933 if (mScreenOn) { 8934 /** 8935 * screen lit and => delayed timer 8936 */ 8937 startDelayedScan(mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8938 null, null); 8939 } else { 8940 /** 8941 * screen dark and PNO supported => scan alarm disabled 8942 */ 8943 if (mBackgroundScanSupported) { 8944 /* If a regular scan result is pending, do not initiate background 8945 * scan until the scan results are returned. This is needed because 8946 * initiating a background scan will cancel the regular scan and 8947 * scan results will not be returned until background scanning is 8948 * cleared 8949 */ 8950 if (!mIsScanOngoing) { 8951 enableBackgroundScan(true); 8952 } 8953 } else { 8954 setScanAlarm(true); 8955 } 8956 } 8957 } 8958 8959 /** 8960 * If we have no networks saved, the supplicant stops doing the periodic scan. 8961 * The scans are useful to notify the user of the presence of an open network. 8962 * Note that these are not wake up scans. 8963 */ 8964 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 8965 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8966 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8967 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8968 } 8969 8970 mDisconnectedTimeStamp = System.currentTimeMillis(); 8971 mDisconnectedPnoAlarmCount = 0; 8972 } 8973 @Override 8974 public boolean processMessage(Message message) { 8975 boolean ret = HANDLED; 8976 8977 logStateAndMessage(message, getClass().getSimpleName()); 8978 8979 switch (message.what) { 8980 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8981 if (mP2pConnected.get()) break; 8982 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 8983 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8984 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8985 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8986 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8987 } 8988 break; 8989 case WifiManager.FORGET_NETWORK: 8990 case CMD_REMOVE_NETWORK: 8991 case CMD_REMOVE_APP_CONFIGURATIONS: 8992 case CMD_REMOVE_USER_CONFIGURATIONS: 8993 // Set up a delayed message here. After the forget/remove is handled 8994 // the handled delayed message will determine if there is a need to 8995 // scan and continue 8996 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8997 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8998 ret = NOT_HANDLED; 8999 break; 9000 case CMD_SET_OPERATIONAL_MODE: 9001 if (message.arg1 != CONNECT_MODE) { 9002 mOperationalMode = message.arg1; 9003 9004 mWifiConfigStore.disableAllNetworks(); 9005 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9006 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9007 setWifiState(WIFI_STATE_DISABLED); 9008 } 9009 transitionTo(mScanModeState); 9010 } 9011 mWifiConfigStore. 9012 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9013 break; 9014 /* Ignore network disconnect */ 9015 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9016 break; 9017 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9018 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9019 if (DBG) { 9020 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9021 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9022 + " debouncing=" + linkDebouncing); 9023 } 9024 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9025 /* ConnectModeState does the rest of the handling */ 9026 ret = NOT_HANDLED; 9027 break; 9028 case CMD_START_SCAN: 9029 if (!checkOrDeferScanAllowed(message)) { 9030 // The scan request was rescheduled 9031 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9032 return HANDLED; 9033 } 9034 if (message.arg1 == SCAN_ALARM_SOURCE) { 9035 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9036 // not be processed) and restart the scan 9037 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9038 if (mP2pConnected.get()) { 9039 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9040 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9041 period); 9042 } 9043 if (!checkAndRestartDelayedScan(message.arg2, 9044 true, period, null, null)) { 9045 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9046 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 9047 + message.arg1 9048 + " " + message.arg2 + ", " + mDelayedScanCounter 9049 + " -> obsolete"); 9050 return HANDLED; 9051 } 9052 /* Disable background scan temporarily during a regular scan */ 9053 enableBackgroundScan(false); 9054 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9055 ret = HANDLED; 9056 } else { 9057 9058 /* 9059 * The SCAN request is not handled in this state and 9060 * would eventually might/will get handled in the 9061 * parent's state. The PNO, if already enabled had to 9062 * get disabled before the SCAN trigger. Hence, stop 9063 * the PNO if already enabled in this state, though the 9064 * SCAN request is not handled(PNO disable before the 9065 * SCAN trigger in any other state is not the right 9066 * place to issue). 9067 */ 9068 9069 enableBackgroundScan(false); 9070 ret = NOT_HANDLED; 9071 } 9072 break; 9073 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9074 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9075 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9076 return HANDLED; 9077 } 9078 /* If we are still in Disconnected state after having discovered a valid 9079 * network this means autojoin didnt managed to associate to the network, 9080 * then restart PNO so as we will try associating to it again. 9081 */ 9082 if (useHalBasedAutoJoinOffload()) { 9083 if (mGScanStartTimeMilli == 0) { 9084 // If offload is not started, then start it... 9085 startGScanDisconnectedModeOffload("disconnectedRestart"); 9086 } else { 9087 // If offload is already started, then check if we need to increase 9088 // the scan period and restart the Gscan 9089 long now = System.currentTimeMillis(); 9090 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9091 && ((now - mGScanStartTimeMilli) 9092 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9093 && (mGScanPeriodMilli 9094 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9095 { 9096 startDisconnectedGScan("disconnected restart gscan"); 9097 } 9098 } 9099 } else { 9100 // If we are still disconnected for a short while after having found a 9101 // network thru PNO, then something went wrong, and for some reason we 9102 // couldn't join this network. 9103 // It might be due to a SW bug in supplicant or the wifi stack, or an 9104 // interoperability issue, or we try to join a bad bss and failed 9105 // In that case we want to restart pno so as to make sure that we will 9106 // attempt again to join that network. 9107 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9108 enableBackgroundScan(false); 9109 enableBackgroundScan(true); 9110 } 9111 return HANDLED; 9112 } 9113 break; 9114 case WifiMonitor.SCAN_RESULTS_EVENT: 9115 case WifiMonitor.SCAN_FAILED_EVENT: 9116 /* Re-enable background scan when a pending scan result is received */ 9117 if (!mScreenOn && mIsScanOngoing 9118 && mBackgroundScanSupported 9119 && !useHalBasedAutoJoinOffload()) { 9120 enableBackgroundScan(true); 9121 } else if (!mScreenOn 9122 && !mIsScanOngoing 9123 && mBackgroundScanSupported 9124 && !useHalBasedAutoJoinOffload()) { 9125 // We receive scan results from legacy PNO, hence restart the PNO alarm 9126 int delay; 9127 if (mDisconnectedPnoAlarmCount < 1) { 9128 delay = 30 * 1000; 9129 } else if (mDisconnectedPnoAlarmCount < 3) { 9130 delay = 60 * 1000; 9131 } else { 9132 delay = 360 * 1000; 9133 } 9134 mDisconnectedPnoAlarmCount++; 9135 if (VDBG) { 9136 loge("Starting PNO alarm " + delay); 9137 } 9138 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9139 System.currentTimeMillis() + delay, 9140 mPnoIntent); 9141 } 9142 /* Handled in parent state */ 9143 ret = NOT_HANDLED; 9144 break; 9145 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9146 NetworkInfo info = (NetworkInfo) message.obj; 9147 mP2pConnected.set(info.isConnected()); 9148 if (mP2pConnected.get()) { 9149 int defaultInterval = mContext.getResources().getInteger( 9150 R.integer.config_wifi_scan_interval_p2p_connected); 9151 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9152 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9153 defaultInterval); 9154 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9155 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9156 if (DBG) log("Turn on scanning after p2p disconnected"); 9157 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9158 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9159 } else { 9160 // If P2P is not connected and there are saved networks, then restart 9161 // scanning at the normal period. This is necessary because scanning might 9162 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9163 // was set to zero. 9164 if (useHalBasedAutoJoinOffload()) { 9165 startGScanDisconnectedModeOffload("p2pRestart"); 9166 } else { 9167 startDelayedScan( 9168 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9169 null, null); 9170 } 9171 } 9172 break; 9173 case CMD_RECONNECT: 9174 case CMD_REASSOCIATE: 9175 if (mTemporarilyDisconnectWifi) { 9176 // Drop a third party reconnect/reassociate if STA is 9177 // temporarily disconnected for p2p 9178 break; 9179 } else { 9180 // ConnectModeState handles it 9181 ret = NOT_HANDLED; 9182 } 9183 break; 9184 case CMD_SCREEN_STATE_CHANGED: 9185 handleScreenStateChanged(message.arg1 != 0); 9186 break; 9187 default: 9188 ret = NOT_HANDLED; 9189 } 9190 return ret; 9191 } 9192 9193 @Override 9194 public void exit() { 9195 mDisconnectedPnoAlarmCount = 0; 9196 /* No need for a background scan upon exit from a disconnected state */ 9197 enableBackgroundScan(false); 9198 setScanAlarm(false); 9199 mAlarmManager.cancel(mPnoIntent); 9200 } 9201 } 9202 9203 class WpsRunningState extends State { 9204 // Tracks the source to provide a reply 9205 private Message mSourceMessage; 9206 @Override 9207 public void enter() { 9208 mSourceMessage = Message.obtain(getCurrentMessage()); 9209 } 9210 @Override 9211 public boolean processMessage(Message message) { 9212 logStateAndMessage(message, getClass().getSimpleName()); 9213 9214 switch (message.what) { 9215 case WifiMonitor.WPS_SUCCESS_EVENT: 9216 // Ignore intermediate success, wait for full connection 9217 break; 9218 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9219 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9220 mSourceMessage.recycle(); 9221 mSourceMessage = null; 9222 deferMessage(message); 9223 transitionTo(mDisconnectedState); 9224 break; 9225 case WifiMonitor.WPS_OVERLAP_EVENT: 9226 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9227 WifiManager.WPS_OVERLAP_ERROR); 9228 mSourceMessage.recycle(); 9229 mSourceMessage = null; 9230 transitionTo(mDisconnectedState); 9231 break; 9232 case WifiMonitor.WPS_FAIL_EVENT: 9233 // Arg1 has the reason for the failure 9234 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9235 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9236 mSourceMessage.recycle(); 9237 mSourceMessage = null; 9238 transitionTo(mDisconnectedState); 9239 } else { 9240 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9241 } 9242 break; 9243 case WifiMonitor.WPS_TIMEOUT_EVENT: 9244 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9245 WifiManager.WPS_TIMED_OUT); 9246 mSourceMessage.recycle(); 9247 mSourceMessage = null; 9248 transitionTo(mDisconnectedState); 9249 break; 9250 case WifiManager.START_WPS: 9251 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9252 break; 9253 case WifiManager.CANCEL_WPS: 9254 if (mWifiNative.cancelWps()) { 9255 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9256 } else { 9257 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9258 } 9259 transitionTo(mDisconnectedState); 9260 break; 9261 /** 9262 * Defer all commands that can cause connections to a different network 9263 * or put the state machine out of connect mode 9264 */ 9265 case CMD_STOP_DRIVER: 9266 case CMD_SET_OPERATIONAL_MODE: 9267 case WifiManager.CONNECT_NETWORK: 9268 case CMD_ENABLE_NETWORK: 9269 case CMD_RECONNECT: 9270 case CMD_REASSOCIATE: 9271 case CMD_ENABLE_ALL_NETWORKS: 9272 deferMessage(message); 9273 break; 9274 case CMD_AUTO_CONNECT: 9275 case CMD_AUTO_ROAM: 9276 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9277 return HANDLED; 9278 case CMD_START_SCAN: 9279 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9280 return HANDLED; 9281 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9282 if (DBG) log("Network connection lost"); 9283 handleNetworkDisconnect(); 9284 break; 9285 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9286 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9287 break; 9288 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9289 // Disregard auth failure events during WPS connection. The 9290 // EAP sequence is retried several times, and there might be 9291 // failures (especially for wps pin). We will get a WPS_XXX 9292 // event at the end of the sequence anyway. 9293 if (DBG) log("Ignore auth failure during WPS connection"); 9294 break; 9295 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9296 // Throw away supplicant state changes when WPS is running. 9297 // We will start getting supplicant state changes once we get 9298 // a WPS success or failure 9299 break; 9300 default: 9301 return NOT_HANDLED; 9302 } 9303 return HANDLED; 9304 } 9305 9306 @Override 9307 public void exit() { 9308 mWifiConfigStore.enableAllNetworks(); 9309 mWifiConfigStore.loadConfiguredNetworks(); 9310 } 9311 } 9312 9313 class SoftApStartingState extends State { 9314 @Override 9315 public void enter() { 9316 final Message message = getCurrentMessage(); 9317 if (message.what == CMD_START_AP) { 9318 final WifiConfiguration config = (WifiConfiguration) message.obj; 9319 9320 if (config == null) { 9321 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9322 } else { 9323 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9324 startSoftApWithConfig(config); 9325 } 9326 } else { 9327 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9328 } 9329 } 9330 @Override 9331 public boolean processMessage(Message message) { 9332 logStateAndMessage(message, getClass().getSimpleName()); 9333 9334 switch(message.what) { 9335 case CMD_START_SUPPLICANT: 9336 case CMD_STOP_SUPPLICANT: 9337 case CMD_START_AP: 9338 case CMD_STOP_AP: 9339 case CMD_START_DRIVER: 9340 case CMD_STOP_DRIVER: 9341 case CMD_SET_OPERATIONAL_MODE: 9342 case CMD_SET_COUNTRY_CODE: 9343 case CMD_SET_FREQUENCY_BAND: 9344 case CMD_START_PACKET_FILTERING: 9345 case CMD_STOP_PACKET_FILTERING: 9346 case CMD_TETHER_STATE_CHANGE: 9347 deferMessage(message); 9348 break; 9349 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9350 WifiConfiguration config = (WifiConfiguration) message.obj; 9351 if (config != null) { 9352 startSoftApWithConfig(config); 9353 } else { 9354 loge("Softap config is null!"); 9355 sendMessage(CMD_START_AP_FAILURE); 9356 } 9357 break; 9358 case CMD_START_AP_SUCCESS: 9359 setWifiApState(WIFI_AP_STATE_ENABLED); 9360 transitionTo(mSoftApStartedState); 9361 break; 9362 case CMD_START_AP_FAILURE: 9363 setWifiApState(WIFI_AP_STATE_FAILED); 9364 transitionTo(mInitialState); 9365 break; 9366 default: 9367 return NOT_HANDLED; 9368 } 9369 return HANDLED; 9370 } 9371 } 9372 9373 class SoftApStartedState extends State { 9374 @Override 9375 public boolean processMessage(Message message) { 9376 logStateAndMessage(message, getClass().getSimpleName()); 9377 9378 switch(message.what) { 9379 case CMD_STOP_AP: 9380 if (DBG) log("Stopping Soft AP"); 9381 /* We have not tethered at this point, so we just shutdown soft Ap */ 9382 try { 9383 mNwService.stopAccessPoint(mInterfaceName); 9384 } catch(Exception e) { 9385 loge("Exception in stopAccessPoint()"); 9386 } 9387 setWifiApState(WIFI_AP_STATE_DISABLED); 9388 transitionTo(mInitialState); 9389 break; 9390 case CMD_START_AP: 9391 // Ignore a start on a running access point 9392 break; 9393 // Fail client mode operation when soft AP is enabled 9394 case CMD_START_SUPPLICANT: 9395 loge("Cannot start supplicant with a running soft AP"); 9396 setWifiState(WIFI_STATE_UNKNOWN); 9397 break; 9398 case CMD_TETHER_STATE_CHANGE: 9399 TetherStateChange stateChange = (TetherStateChange) message.obj; 9400 if (startTethering(stateChange.available)) { 9401 transitionTo(mTetheringState); 9402 } 9403 break; 9404 default: 9405 return NOT_HANDLED; 9406 } 9407 return HANDLED; 9408 } 9409 } 9410 9411 class TetheringState extends State { 9412 @Override 9413 public void enter() { 9414 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9415 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9416 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9417 } 9418 @Override 9419 public boolean processMessage(Message message) { 9420 logStateAndMessage(message, getClass().getSimpleName()); 9421 9422 switch(message.what) { 9423 case CMD_TETHER_STATE_CHANGE: 9424 TetherStateChange stateChange = (TetherStateChange) message.obj; 9425 if (isWifiTethered(stateChange.active)) { 9426 transitionTo(mTetheredState); 9427 } 9428 return HANDLED; 9429 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9430 if (message.arg1 == mTetherToken) { 9431 loge("Failed to get tether update, shutdown soft access point"); 9432 transitionTo(mSoftApStartedState); 9433 // Needs to be first thing handled 9434 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9435 } 9436 break; 9437 case CMD_START_SUPPLICANT: 9438 case CMD_STOP_SUPPLICANT: 9439 case CMD_START_AP: 9440 case CMD_STOP_AP: 9441 case CMD_START_DRIVER: 9442 case CMD_STOP_DRIVER: 9443 case CMD_SET_OPERATIONAL_MODE: 9444 case CMD_SET_COUNTRY_CODE: 9445 case CMD_SET_FREQUENCY_BAND: 9446 case CMD_START_PACKET_FILTERING: 9447 case CMD_STOP_PACKET_FILTERING: 9448 deferMessage(message); 9449 break; 9450 default: 9451 return NOT_HANDLED; 9452 } 9453 return HANDLED; 9454 } 9455 } 9456 9457 class TetheredState extends State { 9458 @Override 9459 public boolean processMessage(Message message) { 9460 logStateAndMessage(message, getClass().getSimpleName()); 9461 9462 switch(message.what) { 9463 case CMD_TETHER_STATE_CHANGE: 9464 TetherStateChange stateChange = (TetherStateChange) message.obj; 9465 if (!isWifiTethered(stateChange.active)) { 9466 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9467 setHostApRunning(null, false); 9468 setHostApRunning(null, true); 9469 } 9470 return HANDLED; 9471 case CMD_STOP_AP: 9472 if (DBG) log("Untethering before stopping AP"); 9473 setWifiApState(WIFI_AP_STATE_DISABLING); 9474 stopTethering(); 9475 transitionTo(mUntetheringState); 9476 // More work to do after untethering 9477 deferMessage(message); 9478 break; 9479 default: 9480 return NOT_HANDLED; 9481 } 9482 return HANDLED; 9483 } 9484 } 9485 9486 class UntetheringState extends State { 9487 @Override 9488 public void enter() { 9489 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9490 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9491 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9492 9493 } 9494 @Override 9495 public boolean processMessage(Message message) { 9496 logStateAndMessage(message, getClass().getSimpleName()); 9497 9498 switch(message.what) { 9499 case CMD_TETHER_STATE_CHANGE: 9500 TetherStateChange stateChange = (TetherStateChange) message.obj; 9501 9502 /* Wait till wifi is untethered */ 9503 if (isWifiTethered(stateChange.active)) break; 9504 9505 transitionTo(mSoftApStartedState); 9506 break; 9507 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9508 if (message.arg1 == mTetherToken) { 9509 loge("Failed to get tether update, force stop access point"); 9510 transitionTo(mSoftApStartedState); 9511 } 9512 break; 9513 case CMD_START_SUPPLICANT: 9514 case CMD_STOP_SUPPLICANT: 9515 case CMD_START_AP: 9516 case CMD_STOP_AP: 9517 case CMD_START_DRIVER: 9518 case CMD_STOP_DRIVER: 9519 case CMD_SET_OPERATIONAL_MODE: 9520 case CMD_SET_COUNTRY_CODE: 9521 case CMD_SET_FREQUENCY_BAND: 9522 case CMD_START_PACKET_FILTERING: 9523 case CMD_STOP_PACKET_FILTERING: 9524 deferMessage(message); 9525 break; 9526 default: 9527 return NOT_HANDLED; 9528 } 9529 return HANDLED; 9530 } 9531 } 9532 9533 /** 9534 * State machine initiated requests can have replyTo set to null indicating 9535 * there are no recepients, we ignore those reply actions. 9536 */ 9537 private void replyToMessage(Message msg, int what) { 9538 if (msg.replyTo == null) return; 9539 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9540 mReplyChannel.replyToMessage(msg, dstMsg); 9541 } 9542 9543 private void replyToMessage(Message msg, int what, int arg1) { 9544 if (msg.replyTo == null) return; 9545 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9546 dstMsg.arg1 = arg1; 9547 mReplyChannel.replyToMessage(msg, dstMsg); 9548 } 9549 9550 private void replyToMessage(Message msg, int what, Object obj) { 9551 if (msg.replyTo == null) return; 9552 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9553 dstMsg.obj = obj; 9554 mReplyChannel.replyToMessage(msg, dstMsg); 9555 } 9556 9557 /** 9558 * arg2 on the source message has a unique id that needs to be retained in replies 9559 * to match the request 9560 * <p>see WifiManager for details 9561 */ 9562 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9563 Message msg = Message.obtain(); 9564 msg.what = what; 9565 msg.arg2 = srcMsg.arg2; 9566 return msg; 9567 } 9568 9569 /** 9570 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9571 * @param msg Must have a WifiConfiguration obj to succeed 9572 */ 9573 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9574 WifiConfiguration config) { 9575 if (config != null && config.preSharedKey != null) { 9576 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9577 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9578 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9579 wifiCredentialEventType); 9580 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9581 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9582 } 9583 } 9584 9585 private static int parseHex(char ch) { 9586 if ('0' <= ch && ch <= '9') { 9587 return ch - '0'; 9588 } else if ('a' <= ch && ch <= 'f') { 9589 return ch - 'a' + 10; 9590 } else if ('A' <= ch && ch <= 'F') { 9591 return ch - 'A' + 10; 9592 } else { 9593 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9594 } 9595 } 9596 9597 private byte[] parseHex(String hex) { 9598 /* This only works for good input; don't throw bad data at it */ 9599 if (hex == null) { 9600 return new byte[0]; 9601 } 9602 9603 if (hex.length() % 2 != 0) { 9604 throw new NumberFormatException(hex + " is not a valid hex string"); 9605 } 9606 9607 byte[] result = new byte[(hex.length())/2 + 1]; 9608 result[0] = (byte) ((hex.length())/2); 9609 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9610 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9611 byte b = (byte) (val & 0xFF); 9612 result[j] = b; 9613 } 9614 9615 return result; 9616 } 9617 9618 private static String makeHex(byte[] bytes) { 9619 StringBuilder sb = new StringBuilder(); 9620 for (byte b : bytes) { 9621 sb.append(String.format("%02x", b)); 9622 } 9623 return sb.toString(); 9624 } 9625 9626 private static String makeHex(byte[] bytes, int from, int len) { 9627 StringBuilder sb = new StringBuilder(); 9628 for (int i = 0; i < len; i++) { 9629 sb.append(String.format("%02x", bytes[from+i])); 9630 } 9631 return sb.toString(); 9632 } 9633 9634 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9635 9636 int len = array1.length + array2.length + array3.length; 9637 9638 if (array1.length != 0) { 9639 len++; /* add another byte for size */ 9640 } 9641 9642 if (array2.length != 0) { 9643 len++; /* add another byte for size */ 9644 } 9645 9646 if (array3.length != 0) { 9647 len++; /* add another byte for size */ 9648 } 9649 9650 byte[] result = new byte[len]; 9651 9652 int index = 0; 9653 if (array1.length != 0) { 9654 result[index] = (byte) (array1.length & 0xFF); 9655 index++; 9656 for (byte b : array1) { 9657 result[index] = b; 9658 index++; 9659 } 9660 } 9661 9662 if (array2.length != 0) { 9663 result[index] = (byte) (array2.length & 0xFF); 9664 index++; 9665 for (byte b : array2) { 9666 result[index] = b; 9667 index++; 9668 } 9669 } 9670 9671 if (array3.length != 0) { 9672 result[index] = (byte) (array3.length & 0xFF); 9673 index++; 9674 for (byte b : array3) { 9675 result[index] = b; 9676 index++; 9677 } 9678 } 9679 return result; 9680 } 9681 9682 private static byte[] concatHex(byte[] array1, byte[] array2) { 9683 9684 int len = array1.length + array2.length; 9685 9686 byte[] result = new byte[len]; 9687 9688 int index = 0; 9689 if (array1.length != 0) { 9690 for (byte b : array1) { 9691 result[index] = b; 9692 index++; 9693 } 9694 } 9695 9696 if (array2.length != 0) { 9697 for (byte b : array2) { 9698 result[index] = b; 9699 index++; 9700 } 9701 } 9702 9703 return result; 9704 } 9705 9706 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9707 if (targetWificonfiguration == null 9708 || targetWificonfiguration.networkId == requestData.networkId) { 9709 logd("id matches targetWifiConfiguration"); 9710 } else { 9711 logd("id does not match targetWifiConfiguration"); 9712 return; 9713 } 9714 9715 TelephonyManager tm = (TelephonyManager) 9716 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9717 9718 if (tm != null) { 9719 StringBuilder sb = new StringBuilder(); 9720 for (String challenge : requestData.data) { 9721 9722 if (challenge == null || challenge.isEmpty()) 9723 continue; 9724 logd("RAND = " + challenge); 9725 9726 byte[] rand = null; 9727 try { 9728 rand = parseHex(challenge); 9729 } catch (NumberFormatException e) { 9730 loge("malformed challenge"); 9731 continue; 9732 } 9733 9734 String base64Challenge = android.util.Base64.encodeToString( 9735 rand, android.util.Base64.NO_WRAP); 9736 /* 9737 * First, try with appType = 2 => USIM according to 9738 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9739 */ 9740 int appType = 2; 9741 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9742 if (tmResponse == null) { 9743 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9744 * appType = 1 => SIM 9745 */ 9746 appType = 1; 9747 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9748 } 9749 logv("Raw Response - " + tmResponse); 9750 9751 if (tmResponse != null && tmResponse.length() > 4) { 9752 byte[] result = android.util.Base64.decode(tmResponse, 9753 android.util.Base64.DEFAULT); 9754 logv("Hex Response -" + makeHex(result)); 9755 int sres_len = result[0]; 9756 String sres = makeHex(result, 1, sres_len); 9757 int kc_offset = 1+sres_len; 9758 int kc_len = result[kc_offset]; 9759 String kc = makeHex(result, 1+kc_offset, kc_len); 9760 sb.append(":" + kc + ":" + sres); 9761 logv("kc:" + kc + " sres:" + sres); 9762 } else { 9763 loge("bad response - " + tmResponse); 9764 } 9765 } 9766 9767 String response = sb.toString(); 9768 logv("Supplicant Response -" + response); 9769 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9770 } else { 9771 loge("could not get telephony manager"); 9772 } 9773 } 9774 9775 void handle3GAuthRequest(SimAuthRequestData requestData) { 9776 StringBuilder sb = new StringBuilder(); 9777 byte[] rand = null; 9778 byte[] authn = null; 9779 String res_type = "UMTS-AUTH"; 9780 9781 if (targetWificonfiguration == null 9782 || targetWificonfiguration.networkId == requestData.networkId) { 9783 logd("id matches targetWifiConfiguration"); 9784 } else { 9785 logd("id does not match targetWifiConfiguration"); 9786 return; 9787 } 9788 if (requestData.data.length == 2) { 9789 try { 9790 rand = parseHex(requestData.data[0]); 9791 authn = parseHex(requestData.data[1]); 9792 } catch (NumberFormatException e) { 9793 loge("malformed challenge"); 9794 } 9795 } else { 9796 loge("malformed challenge"); 9797 } 9798 9799 String tmResponse = ""; 9800 if (rand != null && authn != null) { 9801 String base64Challenge = android.util.Base64.encodeToString( 9802 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9803 9804 TelephonyManager tm = (TelephonyManager) 9805 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9806 if (tm != null) { 9807 int appType = 2; // 2 => USIM 9808 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9809 logv("Raw Response - " + tmResponse); 9810 } else { 9811 loge("could not get telephony manager"); 9812 } 9813 } 9814 9815 if (tmResponse != null && tmResponse.length() > 4) { 9816 byte[] result = android.util.Base64.decode(tmResponse, 9817 android.util.Base64.DEFAULT); 9818 loge("Hex Response - " + makeHex(result)); 9819 byte tag = result[0]; 9820 if (tag == (byte) 0xdb) { 9821 logv("successful 3G authentication "); 9822 int res_len = result[1]; 9823 String res = makeHex(result, 2, res_len); 9824 int ck_len = result[res_len + 2]; 9825 String ck = makeHex(result, res_len + 3, ck_len); 9826 int ik_len = result[res_len + ck_len + 3]; 9827 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9828 sb.append(":" + ik + ":" + ck + ":" + res); 9829 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9830 } else if (tag == (byte) 0xdc) { 9831 loge("synchronisation failure"); 9832 int auts_len = result[1]; 9833 String auts = makeHex(result, 2, auts_len); 9834 res_type = "UMTS-AUTS"; 9835 sb.append(":" + auts); 9836 logv("auts:" + auts); 9837 } else { 9838 loge("bad response - unknown tag = " + tag); 9839 return; 9840 } 9841 } else { 9842 loge("bad response - " + tmResponse); 9843 return; 9844 } 9845 9846 String response = sb.toString(); 9847 logv("Supplicant Response -" + response); 9848 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9849 } 9850 9851 /** 9852 * @param reason reason code from supplicant on network disconnected event 9853 * @return true if this is a suspicious disconnect 9854 */ 9855 static boolean unexpectedDisconnectedReason(int reason) { 9856 return reason == 2 // PREV_AUTH_NOT_VALID 9857 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 9858 || reason == 7 // FRAME_FROM_NONASSOC_STA 9859 || reason == 8 // STA_HAS_LEFT 9860 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 9861 || reason == 14 // MICHAEL_MIC_FAILURE 9862 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 9863 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 9864 || reason == 18 // GROUP_CIPHER_NOT_VALID 9865 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 9866 || reason == 23 // IEEE_802_1X_AUTH_FAILED 9867 || reason == 34; // DISASSOC_LOW_ACK 9868 } 9869} 9870