WifiStateMachine.java revision 49dfc6768889a33eb67102b16faf21667af2a60d
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 = true; 156 private static boolean VDBG = false; 157 private static boolean DRIVERDBG = false; 158 private static boolean VVDBG = 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>(); 250 251 for (int i=0; i<results.length; i++) { 252 WifiChannel channel = new WifiChannel(); 253 channel.freqMHz = results[i].frequency; 254 settings.channelSet.add(channel); 255 } 256 257 stopGscanOffload(); 258 259 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 260 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 261 mPnoResultFound ++; 262 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 263 264 // reconfigure Pno after 1 minutes if we're still in disconnected state 265 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, 30 * 1000); 266 } 267 268 // Testing various network disconnect cases by sending lots of spurious 269 // disconnect to supplicant 270 private boolean testNetworkDisconnect = false; 271 272 private boolean mEnableRssiPolling = false; 273 private boolean mEnableBackgroundScan = false; 274 private int mRssiPollToken = 0; 275 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 276 * In CONNECT_MODE, the STA can scan and connect to an access point 277 * In SCAN_ONLY_MODE, the STA can only scan for access points 278 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 279 */ 280 private int mOperationalMode = CONNECT_MODE; 281 private boolean mIsScanOngoing = false; 282 private boolean mIsFullScanOngoing = false; 283 private boolean mSendScanResultsBroadcast = false; 284 285 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 286 private WorkSource mScanWorkSource = null; 287 private static final int UNKNOWN_SCAN_SOURCE = -1; 288 private static final int SCAN_ALARM_SOURCE = -2; 289 private static final int ADD_OR_UPDATE_SOURCE = -3; 290 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 291 private static final int ENABLE_WIFI = -5; 292 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 293 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 294 295 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 296 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 297 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 298 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 299 300 /* Tracks if state machine has received any screen state change broadcast yet. 301 * We can miss one of these at boot. 302 */ 303 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 304 305 private boolean mBluetoothConnectionActive = false; 306 307 private PowerManager.WakeLock mSuspendWakeLock; 308 309 /** 310 * Interval in milliseconds between polling for RSSI 311 * and linkspeed information 312 */ 313 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 314 315 /** 316 * Interval in milliseconds between receiving a disconnect event 317 * while connected to a good AP, and handling the disconnect proper 318 */ 319 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 320 321 /** 322 * Delay between supplicant restarts upon failure to establish connection 323 */ 324 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 325 326 /** 327 * Number of times we attempt to restart supplicant 328 */ 329 private static final int SUPPLICANT_RESTART_TRIES = 5; 330 331 private int mSupplicantRestartCount = 0; 332 /* Tracks sequence number on stop failure message */ 333 private int mSupplicantStopFailureToken = 0; 334 335 /** 336 * Tether state change notification time out 337 */ 338 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 339 340 /* Tracks sequence number on a tether notification time out */ 341 private int mTetherToken = 0; 342 343 /** 344 * Driver start time out. 345 */ 346 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 347 348 /* Tracks sequence number on a driver time out */ 349 private int mDriverStartToken = 0; 350 351 /** 352 * The link properties of the wifi interface. 353 * Do not modify this directly; use updateLinkProperties instead. 354 */ 355 private LinkProperties mLinkProperties; 356 357 /* Tracks sequence number on a periodic scan message */ 358 private int mPeriodicScanToken = 0; 359 360 // Wakelock held during wifi start/stop and driver load/unload 361 private PowerManager.WakeLock mWakeLock; 362 363 private Context mContext; 364 365 private final Object mDhcpResultsLock = new Object(); 366 private DhcpResults mDhcpResults; 367 368 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 369 private WifiInfo mWifiInfo; 370 private NetworkInfo mNetworkInfo; 371 private NetworkCapabilities mNetworkCapabilities; 372 private SupplicantStateTracker mSupplicantStateTracker; 373 private BaseDhcpStateMachine mDhcpStateMachine; 374 private boolean mDhcpActive = false; 375 376 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 377 378 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 379 380 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 381 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 382 383 // Roaming failure count 384 private int mRoamFailCount = 0; 385 386 // This is the BSSID we are trying to associate to, it can be set to "any" 387 // if we havent selected a BSSID for joining. 388 // if we havent selected a BSSID for joining. 389 // The BSSID we are associated to is found in mWifiInfo 390 private String mTargetRoamBSSID = "any"; 391 392 private long mLastDriverRoamAttempt = 0; 393 394 private WifiConfiguration targetWificonfiguration = null; 395 396 // Used as debug to indicate which configuration last was saved 397 private WifiConfiguration lastSavedConfigurationAttempt = null; 398 399 // Used as debug to indicate which configuration last was removed 400 private WifiConfiguration lastForgetConfigurationAttempt = null; 401 402 //Random used by softAP channel Selection 403 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 404 405 boolean isRoaming() { 406 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 407 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 408 } 409 410 public void autoRoamSetBSSID(int netId, String bssid) { 411 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 412 } 413 414 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 415 boolean ret = true; 416 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 417 if (bssid == null) bssid = "any"; 418 if (config == null) return false; // Nothing to do 419 420 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 421 return false; // We didnt change anything 422 } 423 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 424 // Changing to ANY 425 if (!mWifiConfigStore.roamOnAny) { 426 ret = false; // Nothing to do 427 } 428 } 429 if (VDBG) { 430 loge("autoRoamSetBSSID " + bssid 431 + " key=" + config.configKey()); 432 } 433 config.autoJoinBSSID = bssid; 434 mTargetRoamBSSID = bssid; 435 mWifiConfigStore.saveWifiConfigBSSID(config); 436 return ret; 437 } 438 439 /** 440 * Save the UID correctly depending on if this is a new or existing network. 441 * @return true if operation is authorized, false otherwise 442 */ 443 boolean recordUidIfAuthorized(WifiConfiguration config, int uid) { 444 if (!mWifiConfigStore.isNetworkConfigured(config)) { 445 config.creatorUid = uid; 446 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 447 } else if (!mWifiConfigStore.canModifyNetwork(uid, config)) { 448 return false; 449 } 450 451 config.lastUpdateUid = uid; 452 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 453 454 return true; 455 456 } 457 458 /** 459 * Checks to see if user has specified if the apps configuration is connectable. 460 * If the user hasn't specified we query the user and return true. 461 * 462 * @param message The message to be deferred 463 * @param netId Network id of the configuration to check against 464 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 465 * CONFIG_OVERRIDE_PERMISSION 466 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 467 */ 468 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 469 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 470 471 // We can only evaluate saved configurations. 472 if (config == null) { 473 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 474 return true; 475 } 476 477 switch (config.userApproved) { 478 case WifiConfiguration.USER_APPROVED: 479 case WifiConfiguration.USER_BANNED: 480 return false; 481 case WifiConfiguration.USER_PENDING: 482 default: // USER_UNSPECIFIED 483 /* the intention was to ask user here; but a dialog box is * 484 * too invasive; so we are going to allow connection for now */ 485 config.userApproved = WifiConfiguration.USER_APPROVED; 486 return false; 487 } 488 } 489 490 /** 491 * Subset of link properties coming from netlink. 492 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 493 * and domains obtained from router advertisements (RFC 6106). 494 */ 495 private NetlinkTracker mNetlinkTracker; 496 497 private IpReachabilityMonitor mIpReachabilityMonitor; 498 499 private AlarmManager mAlarmManager; 500 private PendingIntent mScanIntent; 501 private PendingIntent mDriverStopIntent; 502 503 /* Tracks current frequency mode */ 504 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 505 506 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 507 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 508 509 // Channel for sending replies. 510 private AsyncChannel mReplyChannel = new AsyncChannel(); 511 512 private WifiP2pServiceImpl mWifiP2pServiceImpl; 513 514 // Used to initiate a connection with WifiP2pService 515 private AsyncChannel mWifiP2pChannel; 516 private AsyncChannel mWifiApConfigChannel; 517 518 private WifiScanner mWifiScanner; 519 520 private int mConnectionRequests = 0; 521 private WifiNetworkFactory mNetworkFactory; 522 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 523 private WifiNetworkAgent mNetworkAgent; 524 525 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 526 // We should really persist that into the networkHistory.txt file, and read it back when 527 // WifiStateMachine starts up 528 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 529 530 // Used to filter out requests we couldn't possibly satisfy. 531 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 532 533 /* The base for wifi message types */ 534 static final int BASE = Protocol.BASE_WIFI; 535 /* Start the supplicant */ 536 static final int CMD_START_SUPPLICANT = BASE + 11; 537 /* Stop the supplicant */ 538 static final int CMD_STOP_SUPPLICANT = BASE + 12; 539 /* Start the driver */ 540 static final int CMD_START_DRIVER = BASE + 13; 541 /* Stop the driver */ 542 static final int CMD_STOP_DRIVER = BASE + 14; 543 /* Indicates Static IP succeeded */ 544 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 545 /* Indicates Static IP failed */ 546 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 547 /* Indicates supplicant stop failed */ 548 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 549 /* Delayed stop to avoid shutting down driver too quick*/ 550 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 551 /* A delayed message sent to start driver when it fail to come up */ 552 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 553 554 /* Start the soft access point */ 555 static final int CMD_START_AP = BASE + 21; 556 /* Indicates soft ap start succeeded */ 557 static final int CMD_START_AP_SUCCESS = BASE + 22; 558 /* Indicates soft ap start failed */ 559 static final int CMD_START_AP_FAILURE = BASE + 23; 560 /* Stop the soft access point */ 561 static final int CMD_STOP_AP = BASE + 24; 562 /* Set the soft access point configuration */ 563 static final int CMD_SET_AP_CONFIG = BASE + 25; 564 /* Soft access point configuration set completed */ 565 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 566 /* Request the soft access point configuration */ 567 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 568 /* Response to access point configuration request */ 569 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 570 /* Invoked when getting a tether state change notification */ 571 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 572 /* A delayed message sent to indicate tether state change failed to arrive */ 573 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 574 575 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 576 577 /* Supplicant commands */ 578 /* Is supplicant alive ? */ 579 static final int CMD_PING_SUPPLICANT = BASE + 51; 580 /* Add/update a network configuration */ 581 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 582 /* Delete a network */ 583 static final int CMD_REMOVE_NETWORK = BASE + 53; 584 /* Enable a network. The device will attempt a connection to the given network. */ 585 static final int CMD_ENABLE_NETWORK = BASE + 54; 586 /* Enable all networks */ 587 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 588 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 589 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 590 /* Clear the blacklist network list */ 591 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 592 /* Save configuration */ 593 static final int CMD_SAVE_CONFIG = BASE + 58; 594 /* Get configured networks */ 595 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 596 /* Get available frequencies */ 597 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 598 /* Get adaptors */ 599 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 600 /* Get configured networks with real preSharedKey */ 601 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 602 /* Get Link Layer Stats thru HAL */ 603 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 604 /* Supplicant commands after driver start*/ 605 /* Initiate a scan */ 606 static final int CMD_START_SCAN = BASE + 71; 607 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 608 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 609 /* Disconnect from a network */ 610 static final int CMD_DISCONNECT = BASE + 73; 611 /* Reconnect to a network */ 612 static final int CMD_RECONNECT = BASE + 74; 613 /* Reassociate to a network */ 614 static final int CMD_REASSOCIATE = BASE + 75; 615 /* Get Connection Statistis */ 616 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 617 618 /* Controls suspend mode optimizations 619 * 620 * When high perf mode is enabled, suspend mode optimizations are disabled 621 * 622 * When high perf mode is disabled, suspend mode optimizations are enabled 623 * 624 * Suspend mode optimizations include: 625 * - packet filtering 626 * - turn off roaming 627 * - DTIM wake up settings 628 */ 629 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 630 /* Set the country code */ 631 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 632 /* Enables RSSI poll */ 633 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 634 /* RSSI poll */ 635 static final int CMD_RSSI_POLL = BASE + 83; 636 /* Set up packet filtering */ 637 static final int CMD_START_PACKET_FILTERING = BASE + 84; 638 /* Clear packet filter */ 639 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 640 /* Enable suspend mode optimizations in the driver */ 641 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 642 /* Delayed NETWORK_DISCONNECT */ 643 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 644 /* When there are no saved networks, we do a periodic scan to notify user of 645 * an open network */ 646 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 647 /* Test network Disconnection NETWORK_DISCONNECT */ 648 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 649 private int testNetworkDisconnectCounter = 0; 650 651 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 652 static final int MULTICAST_V6 = 1; 653 static final int MULTICAST_V4 = 0; 654 655 /* Set the frequency band */ 656 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 657 /* Enable TDLS on a specific MAC address */ 658 static final int CMD_ENABLE_TDLS = BASE + 92; 659 /* DHCP/IP configuration watchdog */ 660 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 661 /* Remove a packages associated configrations */ 662 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 663 /* Remove a packages associated configrations */ 664 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 665 666 /** 667 * Make this timer 40 seconds, which is about the normal DHCP timeout. 668 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 669 * for more than 30 seconds. 670 */ 671 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 672 673 int obtainingIpWatchdogCount = 0; 674 675 /* Commands from/to the SupplicantStateTracker */ 676 /* Reset the supplicant state tracker */ 677 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 678 679 680 /** 681 * Watchdog for protecting against b/16823537 682 * Leave time for 4-way handshake to succeed 683 */ 684 static final int ROAM_GUARD_TIMER_MSEC = 15000; 685 686 int roamWatchdogCount = 0; 687 /* Roam state watchdog */ 688 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 689 /* Screen change intent handling */ 690 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 691 692 int disconnectingWatchdogCount = 0; 693 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 694 695 /* Disconnecting state watchdog */ 696 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 697 698 /* Disable an ephemeral network */ 699 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 700 701 /* Get matching network */ 702 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 703 704 /* P2p commands */ 705 /* We are ok with no response here since we wont do much with it anyway */ 706 public static final int CMD_ENABLE_P2P = BASE + 131; 707 /* In order to shut down supplicant cleanly, we wait till p2p has 708 * been disabled */ 709 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 710 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 711 712 public static final int CMD_BOOT_COMPLETED = BASE + 134; 713 714 /* We now have a valid IP configuration. */ 715 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 716 /* We no longer have a valid IP configuration. */ 717 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 718 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 719 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 720 721 /* Supplicant is trying to associate to a given BSSID */ 722 static final int CMD_TARGET_BSSID = BASE + 141; 723 724 /* Reload all networks and reconnect */ 725 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 726 727 static final int CMD_AUTO_CONNECT = BASE + 143; 728 729 static final int network_status_unwanted_disconnect = 0; 730 static final int network_status_unwanted_disable_autojoin = 1; 731 732 static final int CMD_UNWANTED_NETWORK = BASE + 144; 733 734 static final int CMD_AUTO_ROAM = BASE + 145; 735 736 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 737 738 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 739 740 static final int CMD_NETWORK_STATUS = BASE + 148; 741 742 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 743 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 744 745 /* Note: BASE + 152 in use by CMD_REMOVE_USER_CONFIGURATIONS */ 746 747 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 748 static final int CMD_START_PNO = BASE + 154; /* used to restart PNO when it was 749 750 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 149; /* used to restart PNO when it was 751 stopped due to association attempt */ 752 753 static final int CMD_STARTED_PNO_DBG = BASE + 155; /* used to log if PNO was started */ 754 755 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 756 757 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 157; /* used to restart PNO when it was 758 stopped due to association attempt */ 759 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 760 761 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; /* used to log if GSCAN was started */ 762 763 764 /* Wifi state machine modes of operation */ 765 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 766 public static final int CONNECT_MODE = 1; 767 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 768 public static final int SCAN_ONLY_MODE = 2; 769 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 770 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 771 772 private static final int SUCCESS = 1; 773 private static final int FAILURE = -1; 774 775 /* Tracks if suspend optimizations need to be disabled by DHCP, 776 * screen or due to high perf mode. 777 * When any of them needs to disable it, we keep the suspend optimizations 778 * disabled 779 */ 780 private int mSuspendOptNeedsDisabled = 0; 781 782 private static final int SUSPEND_DUE_TO_DHCP = 1; 783 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 784 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 785 786 /* Tracks if user has enabled suspend optimizations through settings */ 787 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 788 789 /** 790 * Default framework scan interval in milliseconds. This is used in the scenario in which 791 * wifi chipset does not support background scanning to set up a 792 * periodic wake up scan so that the device can connect to a new access 793 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 794 * override this. 795 */ 796 private final int mDefaultFrameworkScanIntervalMs; 797 798 /** 799 * Supplicant scan interval in milliseconds. 800 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 801 * from the default config if the setting is not set 802 */ 803 private long mSupplicantScanIntervalMs; 804 805 /** 806 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 807 */ 808 private long lastFullBandConnectedTimeMilli; 809 810 /** 811 * time interval to the next full band scan we will perform for 812 * autojoin while connected with screen lit 813 */ 814 private long fullBandConnectedTimeIntervalMilli; 815 816 /** 817 * max time interval to the next full band scan we will perform for 818 * autojoin while connected with screen lit 819 * Max time is 5 minutes 820 */ 821 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 822 823 /** 824 * Minimum time interval between enabling all networks. 825 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 826 * due to enabling every time. We add a threshold to avoid this. 827 */ 828 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 829 private long mLastEnableAllNetworksTime; 830 831 int mRunningBeaconCount = 0; 832 833 /** 834 * Starting and shutting down driver too quick causes problems leading to driver 835 * being in a bad state. Delay driver stop. 836 */ 837 private final int mDriverStopDelayMs; 838 private int mDelayedStopCounter; 839 private boolean mInDelayedStop = false; 840 841 // there is a delay between StateMachine change country code and Supplicant change country code 842 // here save the current WifiStateMachine set country code 843 private volatile String mSetCountryCode = null; 844 845 // Supplicant doesn't like setting the same country code multiple times (it may drop 846 // currently connected network), so we save the current device set country code here to avoid 847 // redundency 848 private String mDriverSetCountryCode = null; 849 850 /* Default parent state */ 851 private State mDefaultState = new DefaultState(); 852 /* Temporary initial state */ 853 private State mInitialState = new InitialState(); 854 /* Driver loaded, waiting for supplicant to start */ 855 private State mSupplicantStartingState = new SupplicantStartingState(); 856 /* Driver loaded and supplicant ready */ 857 private State mSupplicantStartedState = new SupplicantStartedState(); 858 /* Waiting for supplicant to stop and monitor to exit */ 859 private State mSupplicantStoppingState = new SupplicantStoppingState(); 860 /* Driver start issued, waiting for completed event */ 861 private State mDriverStartingState = new DriverStartingState(); 862 /* Driver started */ 863 private State mDriverStartedState = new DriverStartedState(); 864 /* Wait until p2p is disabled 865 * This is a special state which is entered right after we exit out of DriverStartedState 866 * before transitioning to another state. 867 */ 868 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 869 /* Driver stopping */ 870 private State mDriverStoppingState = new DriverStoppingState(); 871 /* Driver stopped */ 872 private State mDriverStoppedState = new DriverStoppedState(); 873 /* Scan for networks, no connection will be established */ 874 private State mScanModeState = new ScanModeState(); 875 /* Connecting to an access point */ 876 private State mConnectModeState = new ConnectModeState(); 877 /* Connected at 802.11 (L2) level */ 878 private State mL2ConnectedState = new L2ConnectedState(); 879 /* fetching IP after connection to access point (assoc+auth complete) */ 880 private State mObtainingIpState = new ObtainingIpState(); 881 /* Waiting for link quality verification to be complete */ 882 private State mVerifyingLinkState = new VerifyingLinkState(); 883 /* Connected with IP addr */ 884 private State mConnectedState = new ConnectedState(); 885 /* Roaming */ 886 private State mRoamingState = new RoamingState(); 887 /* disconnect issued, waiting for network disconnect confirmation */ 888 private State mDisconnectingState = new DisconnectingState(); 889 /* Network is not connected, supplicant assoc+auth is not complete */ 890 private State mDisconnectedState = new DisconnectedState(); 891 /* Waiting for WPS to be completed*/ 892 private State mWpsRunningState = new WpsRunningState(); 893 894 /* Soft ap is starting up */ 895 private State mSoftApStartingState = new SoftApStartingState(); 896 /* Soft ap is running */ 897 private State mSoftApStartedState = new SoftApStartedState(); 898 /* Soft ap is running and we are waiting for tether notification */ 899 private State mTetheringState = new TetheringState(); 900 /* Soft ap is running and we are tethered through connectivity service */ 901 private State mTetheredState = new TetheredState(); 902 /* Waiting for untether confirmation before stopping soft Ap */ 903 private State mUntetheringState = new UntetheringState(); 904 905 906 907 private class WifiScanListener implements WifiScanner.ScanListener { 908 @Override 909 public void onSuccess() { 910 Log.e(TAG, "WifiScanListener onSuccess"); 911 }; 912 @Override 913 public void onFailure(int reason, String description) { 914 Log.e(TAG, "WifiScanListener onFailure"); 915 }; 916 @Override 917 public void onPeriodChanged(int periodInMs) { 918 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 919 } 920 @Override 921 public void onResults(WifiScanner.ScanData[] results) { 922 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 923 } 924 @Override 925 public void onFullResult(ScanResult fullScanResult) { 926 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 927 } 928 929 WifiScanListener() {} 930 } 931 932 WifiScanListener mWifiScanListener = new WifiScanListener(); 933 934 935 private class TetherStateChange { 936 ArrayList<String> available; 937 ArrayList<String> active; 938 939 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 940 available = av; 941 active = ac; 942 } 943 } 944 945 public static class SimAuthRequestData { 946 int networkId; 947 int protocol; 948 String ssid; 949 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 950 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 951 String[] data; 952 } 953 954 /** 955 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 956 * {@link WifiManager#WIFI_STATE_DISABLING}, 957 * {@link WifiManager#WIFI_STATE_ENABLED}, 958 * {@link WifiManager#WIFI_STATE_ENABLING}, 959 * {@link WifiManager#WIFI_STATE_UNKNOWN} 960 */ 961 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 962 963 /** 964 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 965 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 966 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 967 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 968 * {@link WifiManager#WIFI_AP_STATE_FAILED} 969 */ 970 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 971 972 private static final int SCAN_REQUEST = 0; 973 private static final String ACTION_START_SCAN = 974 "com.android.server.WifiManager.action.START_SCAN"; 975 976 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 977 private static final int DRIVER_STOP_REQUEST = 0; 978 private static final String ACTION_DELAYED_DRIVER_STOP = 979 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 980 981 /** 982 * Keep track of whether WIFI is running. 983 */ 984 private boolean mIsRunning = false; 985 986 /** 987 * Keep track of whether we last told the battery stats we had started. 988 */ 989 private boolean mReportedRunning = false; 990 991 /** 992 * Most recently set source of starting WIFI. 993 */ 994 private final WorkSource mRunningWifiUids = new WorkSource(); 995 996 /** 997 * The last reported UIDs that were responsible for starting WIFI. 998 */ 999 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1000 1001 private final IBatteryStats mBatteryStats; 1002 1003 private String mTcpBufferSizes = null; 1004 1005 // Used for debug and stats gathering 1006 private static int sScanAlarmIntentCount = 0; 1007 1008 final static int frameworkMinScanIntervalSaneValue = 10000; 1009 1010 boolean mPnoEnabled; 1011 boolean mLazyRoamEnabled; 1012 long mGScanStartTimeMilli; 1013 long mGScanPeriodMilli; 1014 1015 public WifiStateMachine(Context context, String wlanInterface, 1016 WifiTrafficPoller trafficPoller) { 1017 super("WifiStateMachine"); 1018 mContext = context; 1019 mSetCountryCode = Settings.Global.getString( 1020 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 1021 mInterfaceName = wlanInterface; 1022 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1023 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1024 BatteryStats.SERVICE_NAME)); 1025 1026 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1027 mNwService = INetworkManagementService.Stub.asInterface(b); 1028 1029 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1030 PackageManager.FEATURE_WIFI_DIRECT); 1031 1032 mWifiNative = new WifiNative(mInterfaceName); 1033 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 1034 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1035 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1036 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1037 mWifiLogger = new WifiLogger(); 1038 1039 mWifiInfo = new WifiInfo(); 1040 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1041 getHandler()); 1042 mLinkProperties = new LinkProperties(); 1043 1044 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1045 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1046 1047 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1048 1049 mNetworkInfo.setIsAvailable(false); 1050 mLastBssid = null; 1051 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1052 mLastSignalLevel = -1; 1053 1054 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1055 public void update() { 1056 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1057 } 1058 }); 1059 try { 1060 mNwService.registerObserver(mNetlinkTracker); 1061 } catch (RemoteException e) { 1062 loge("Couldn't register netlink tracker: " + e.toString()); 1063 } 1064 1065 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1066 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1067 1068 // Make sure the interval is not configured less than 10 seconds 1069 int period = mContext.getResources().getInteger( 1070 R.integer.config_wifi_framework_scan_interval); 1071 if (period < frameworkMinScanIntervalSaneValue) { 1072 period = frameworkMinScanIntervalSaneValue; 1073 } 1074 mDefaultFrameworkScanIntervalMs = period; 1075 mDriverStopDelayMs = mContext.getResources().getInteger( 1076 R.integer.config_wifi_driver_stop_delay); 1077 1078 mBackgroundScanSupported = mContext.getResources().getBoolean( 1079 R.bool.config_wifi_background_scan_support); 1080 1081 mPrimaryDeviceType = mContext.getResources().getString( 1082 R.string.config_wifi_p2p_device_type); 1083 1084 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1085 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1086 1087 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1088 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1089 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1090 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1091 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1092 // TODO - needs to be a bit more dynamic 1093 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1094 1095 mContext.registerReceiver( 1096 new BroadcastReceiver() { 1097 @Override 1098 public void onReceive(Context context, Intent intent) { 1099 ArrayList<String> available = intent.getStringArrayListExtra( 1100 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1101 ArrayList<String> active = intent.getStringArrayListExtra( 1102 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1103 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1104 } 1105 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1106 1107 mContext.registerReceiver( 1108 new BroadcastReceiver() { 1109 @Override 1110 public void onReceive(Context context, Intent intent) { 1111 sScanAlarmIntentCount++; // Used for debug only 1112 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1113 if (VDBG) 1114 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1115 } 1116 }, 1117 new IntentFilter(ACTION_START_SCAN)); 1118 1119 IntentFilter filter = new IntentFilter(); 1120 filter.addAction(Intent.ACTION_SCREEN_ON); 1121 filter.addAction(Intent.ACTION_SCREEN_OFF); 1122 mContext.registerReceiver( 1123 new BroadcastReceiver() { 1124 @Override 1125 public void onReceive(Context context, Intent intent) { 1126 String action = intent.getAction(); 1127 1128 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1129 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1130 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1131 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1132 } 1133 } 1134 }, filter); 1135 1136 mContext.registerReceiver( 1137 new BroadcastReceiver() { 1138 @Override 1139 public void onReceive(Context context, Intent intent) { 1140 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1141 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1142 } 1143 }, 1144 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1145 1146 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1147 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1148 new ContentObserver(getHandler()) { 1149 @Override 1150 public void onChange(boolean selfChange) { 1151 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1152 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1153 } 1154 }); 1155 1156 mContext.registerReceiver( 1157 new BroadcastReceiver() { 1158 @Override 1159 public void onReceive(Context context, Intent intent) { 1160 sendMessage(CMD_BOOT_COMPLETED); 1161 } 1162 }, 1163 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1164 1165 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1166 1167 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1168 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1169 1170 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1171 mSuspendWakeLock.setReferenceCounted(false); 1172 1173 mTcpBufferSizes = mContext.getResources().getString( 1174 com.android.internal.R.string.config_wifi_tcp_buffers); 1175 1176 addState(mDefaultState); 1177 addState(mInitialState, mDefaultState); 1178 addState(mSupplicantStartingState, mDefaultState); 1179 addState(mSupplicantStartedState, mDefaultState); 1180 addState(mDriverStartingState, mSupplicantStartedState); 1181 addState(mDriverStartedState, mSupplicantStartedState); 1182 addState(mScanModeState, mDriverStartedState); 1183 addState(mConnectModeState, mDriverStartedState); 1184 addState(mL2ConnectedState, mConnectModeState); 1185 addState(mObtainingIpState, mL2ConnectedState); 1186 addState(mVerifyingLinkState, mL2ConnectedState); 1187 addState(mConnectedState, mL2ConnectedState); 1188 addState(mRoamingState, mL2ConnectedState); 1189 addState(mDisconnectingState, mConnectModeState); 1190 addState(mDisconnectedState, mConnectModeState); 1191 addState(mWpsRunningState, mConnectModeState); 1192 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1193 addState(mDriverStoppingState, mSupplicantStartedState); 1194 addState(mDriverStoppedState, mSupplicantStartedState); 1195 addState(mSupplicantStoppingState, mDefaultState); 1196 addState(mSoftApStartingState, mDefaultState); 1197 addState(mSoftApStartedState, mDefaultState); 1198 addState(mTetheringState, mSoftApStartedState); 1199 addState(mTetheredState, mSoftApStartedState); 1200 addState(mUntetheringState, mSoftApStartedState); 1201 1202 setInitialState(mInitialState); 1203 1204 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1205 setLogOnlyTransitions(false); 1206 if (VDBG) setDbg(true); 1207 1208 //start the state machine 1209 start(); 1210 1211 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1212 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1213 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1214 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1215 } 1216 1217 1218 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1219 Intent intent = new Intent(action, null); 1220 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1221 intent.setPackage(this.getClass().getPackage().getName()); 1222 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1223 } 1224 1225 private int mVerboseLoggingLevel = 0; 1226 1227 int getVerboseLoggingLevel() { 1228 return mVerboseLoggingLevel; 1229 } 1230 1231 void enableVerboseLogging(int verbose) { 1232 mVerboseLoggingLevel = verbose; 1233 if (verbose > 0) { 1234 DBG = true; 1235 VDBG = true; 1236 PDBG = true; 1237 mLogMessages = true; 1238 //mWifiNative.setSupplicantLogLevel("DEBUG"); 1239 } else { 1240 DBG = false; 1241 VDBG = false; 1242 PDBG = false; 1243 mLogMessages = false; 1244 mWifiNative.setSupplicantLogLevel("INFO"); 1245 } 1246 mWifiAutoJoinController.enableVerboseLogging(verbose); 1247 mWifiMonitor.enableVerboseLogging(verbose); 1248 mWifiNative.enableVerboseLogging(verbose); 1249 mWifiConfigStore.enableVerboseLogging(verbose); 1250 mSupplicantStateTracker.enableVerboseLogging(verbose); 1251 } 1252 1253 public void setHalBasedAutojoinOffload(int enabled) { 1254 // Shoult be used for debug only, triggered form developper settings 1255 // enabling HAl based PNO dynamically is not safe and not a normal operation 1256 mHalBasedPnoEnableInDevSettings = enabled > 0; 1257 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1258 sendMessage(CMD_DISCONNECT); 1259 } 1260 1261 public void setAllowNetworkSwitchingWhileAssociated(int enabled) { 1262 mEnableAssociatedNetworkSwitchingInDevSettings = enabled > 0; 1263 } 1264 1265 int getHalBasedAutojoinOffload() { 1266 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1267 } 1268 1269 int getAllowNetworkSwitchingWhileAssociated() { 1270 return mEnableAssociatedNetworkSwitchingInDevSettings ? 1 : 0; 1271 } 1272 1273 boolean useHalBasedAutoJoinOffload() { 1274 // all three settings need to be true: 1275 // - developper settings switch 1276 // - driver support 1277 // - config option 1278 return mHalBasedPnoEnableInDevSettings 1279 && mHalBasedPnoDriverSupported 1280 && mWifiConfigStore.enableHalBasedPno.get(); 1281 } 1282 1283 boolean allowFullBandScanAndAssociated() { 1284 if (getAllowScansWithTraffic() == 0) { 1285 return false; 1286 } 1287 1288 if (!mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 1289 return false; 1290 } 1291 1292 if (mWifiInfo.txSuccessRate > 1293 mWifiConfigStore.maxTxPacketForFullScans 1294 || mWifiInfo.rxSuccessRate > 1295 mWifiConfigStore.maxRxPacketForFullScans) { 1296 // Too much traffic at the interface, hence no full band scan 1297 return false; 1298 } 1299 1300 if (getCurrentState() != mConnectedState) { 1301 return false; 1302 } 1303 1304 return true; 1305 } 1306 1307 long lastScanPermissionUpdate = 0; 1308 boolean mConnectedModeGScanOffloadStarted = false; 1309 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1310 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1311 // we want to throttle the GScan Stop->Start transition 1312 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1313 void updateAssociatedScanPermission() { 1314 1315 if (useHalBasedAutoJoinOffload()) { 1316 boolean allowed = allowFullBandScanAndAssociated(); 1317 1318 long now = System.currentTimeMillis(); 1319 if (mConnectedModeGScanOffloadStarted && !allowed) { 1320 stopGscanOffload(); 1321 } 1322 if (!mConnectedModeGScanOffloadStarted && allowed) { 1323 if ((now - lastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1324 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1325 // to look for 5GHz BSSIDs and better networks 1326 startGScanConnectedModeOffload(); 1327 } 1328 } 1329 } 1330 } 1331 1332 private int mAggressiveHandover = 0; 1333 1334 int getAggressiveHandover() { 1335 return mAggressiveHandover; 1336 } 1337 1338 void enableAggressiveHandover(int enabled) { 1339 mAggressiveHandover = enabled; 1340 } 1341 1342 public void clearANQPCache() { 1343 mWifiConfigStore.clearANQPCache(); 1344 } 1345 1346 public void setAllowScansWithTraffic(int enabled) { 1347 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1348 } 1349 1350 public int getAllowScansWithTraffic() { 1351 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1352 } 1353 1354 public void setAllowScansWhileAssociated(int enabled) { 1355 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled > 0 ? true : false); 1356 } 1357 1358 public int getAllowScansWhileAssociated() { 1359 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get() ? 1 : 0; 1360 } 1361 1362 /* 1363 * 1364 * Framework scan control 1365 */ 1366 1367 private boolean mAlarmEnabled = false; 1368 1369 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1370 1371 private void setScanAlarm(boolean enabled) { 1372 if (PDBG) { 1373 loge("setScanAlarm " + enabled 1374 + " period " + mDefaultFrameworkScanIntervalMs 1375 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1376 } 1377 if (mBackgroundScanSupported == false) { 1378 // Scan alarm is only used for background scans if they are not 1379 // offloaded to the wifi chipset, hence enable the scan alarm 1380 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1381 enabled = true; 1382 } 1383 1384 if (enabled == mAlarmEnabled) return; 1385 if (enabled) { 1386 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1387 /* going to wake up the host processor to look for access points */ 1388 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1389 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1390 mScanIntent); 1391 mAlarmEnabled = true; 1392 } else { 1393 mAlarmManager.cancel(mScanIntent); 1394 mAlarmEnabled = false; 1395 } 1396 } 1397 1398 private void cancelDelayedScan() { 1399 mDelayedScanCounter.incrementAndGet(); 1400 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1401 } 1402 1403 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1404 ScanSettings settings, WorkSource workSource) { 1405 1406 if (counter != mDelayedScanCounter.get()) { 1407 return false; 1408 } 1409 if (restart) 1410 startDelayedScan(milli, settings, workSource); 1411 return true; 1412 } 1413 1414 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1415 if (milli <= 0) return; 1416 /** 1417 * The cases where the scan alarm should be run are : 1418 * - DisconnectedState && screenOn => used delayed timer 1419 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1420 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1421 * - ConnectedState && screenOn => used delayed timer 1422 */ 1423 1424 mDelayedScanCounter.incrementAndGet(); 1425 if (mScreenOn && 1426 (getCurrentState() == mDisconnectedState 1427 || getCurrentState() == mConnectedState)) { 1428 Bundle bundle = new Bundle(); 1429 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1430 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1431 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1432 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1433 mDelayedScanCounter.get(), bundle, milli); 1434 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1435 } else if (mBackgroundScanSupported == false 1436 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1437 setScanAlarm(true); 1438 if (DBG) loge("startDelayedScan start scan alarm -> " 1439 + mDelayedScanCounter + " milli " + milli); 1440 } else { 1441 if (DBG) loge("startDelayedScan unhandled -> " 1442 + mDelayedScanCounter + " milli " + milli); 1443 } 1444 } 1445 1446 private boolean setRandomMacOui() { 1447 String oui = mContext.getResources().getString( 1448 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1449 String[] ouiParts = oui.split("-"); 1450 byte[] ouiBytes = new byte[3]; 1451 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1452 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1453 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1454 1455 logd("Setting OUI to " + oui); 1456 return mWifiNative.setScanningMacOui(ouiBytes); 1457 } 1458 1459 /** 1460 * ****************************************************** 1461 * Methods exposed for public use 1462 * ****************************************************** 1463 */ 1464 1465 public Messenger getMessenger() { 1466 return new Messenger(getHandler()); 1467 } 1468 1469 public WifiMonitor getWifiMonitor() { 1470 return mWifiMonitor; 1471 } 1472 1473 /** 1474 * TODO: doc 1475 */ 1476 public boolean syncPingSupplicant(AsyncChannel channel) { 1477 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1478 boolean result = (resultMsg.arg1 != FAILURE); 1479 resultMsg.recycle(); 1480 return result; 1481 } 1482 1483 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1484 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1485 List<WifiChannel> list = null; 1486 if (resultMsg.obj != null) { 1487 list = new ArrayList<WifiChannel>(); 1488 String freqs = (String) resultMsg.obj; 1489 String[] lines = freqs.split("\n"); 1490 for (String line : lines) 1491 if (line.contains("MHz")) { 1492 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1493 WifiChannel c = new WifiChannel(); 1494 String[] prop = line.split(" "); 1495 if (prop.length < 5) continue; 1496 try { 1497 c.channelNum = Integer.parseInt(prop[1]); 1498 c.freqMHz = Integer.parseInt(prop[3]); 1499 } catch (NumberFormatException e) { 1500 } 1501 c.isDFS = line.contains("(DFS)"); 1502 list.add(c); 1503 } else if (line.contains("Mode[B] Channels:")) { 1504 // B channels are the same as G channels, skipped 1505 break; 1506 } 1507 } 1508 resultMsg.recycle(); 1509 return (list != null && list.size() > 0) ? list : null; 1510 } 1511 1512 /** 1513 * When settings allowing making use of untrusted networks change, trigger a scan 1514 * so as to kick of autojoin. 1515 */ 1516 public void startScanForUntrustedSettingChange() { 1517 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1518 } 1519 1520 /** 1521 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1522 * given to callingUid. 1523 * 1524 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1525 * workSource is specified. 1526 * @param workSource If not null, blame is given to workSource. 1527 * @param settings Scan settings, see {@link ScanSettings}. 1528 */ 1529 public void startScan(int callingUid, int scanCounter, 1530 ScanSettings settings, WorkSource workSource) { 1531 Bundle bundle = new Bundle(); 1532 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1533 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1534 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1535 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1536 } 1537 1538 // called from BroadcastListener 1539 1540 /** 1541 * Start reading new scan data 1542 * Data comes in as: 1543 * "scancount=5\n" 1544 * "nextcount=5\n" 1545 * "apcount=3\n" 1546 * "trunc\n" (optional) 1547 * "bssid=...\n" 1548 * "ssid=...\n" 1549 * "freq=...\n" (in Mhz) 1550 * "level=...\n" 1551 * "dist=...\n" (in cm) 1552 * "distsd=...\n" (standard deviation, in cm) 1553 * "====" 1554 * "bssid=...\n" 1555 * etc 1556 * "====" 1557 * "bssid=...\n" 1558 * etc 1559 * "%%%%" 1560 * "apcount=2\n" 1561 * "bssid=...\n" 1562 * etc 1563 * "%%%% 1564 * etc 1565 * "----" 1566 */ 1567 private final static boolean DEBUG_PARSE = false; 1568 1569 private long mDisconnectedTimeStamp = 0; 1570 1571 public long getDisconnectedTimeMilli() { 1572 if (getCurrentState() == mDisconnectedState 1573 && mDisconnectedTimeStamp != 0) { 1574 long now_ms = System.currentTimeMillis(); 1575 return now_ms - mDisconnectedTimeStamp; 1576 } 1577 return 0; 1578 } 1579 1580 // Keeping track of scan requests 1581 private long lastStartScanTimeStamp = 0; 1582 private long lastScanDuration = 0; 1583 // Last connect attempt is used to prevent scan requests: 1584 // - for a period of 10 seconds after attempting to connect 1585 private long lastConnectAttempt = 0; 1586 private String lastScanFreqs = null; 1587 1588 // For debugging, keep track of last message status handling 1589 // TODO, find an equivalent mechanism as part of parent class 1590 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1591 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1592 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1593 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1594 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1595 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1596 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1597 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1598 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1599 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1600 1601 private int messageHandlingStatus = 0; 1602 1603 //TODO: this is used only to track connection attempts, however the link state and packet per 1604 //TODO: second logic should be folded into that 1605 private boolean checkOrDeferScanAllowed(Message msg) { 1606 long now = System.currentTimeMillis(); 1607 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1608 Message dmsg = Message.obtain(msg); 1609 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1610 return false; 1611 } 1612 return true; 1613 } 1614 1615 private int mOnTime = 0; 1616 private int mTxTime = 0; 1617 private int mRxTime = 0; 1618 private int mOnTimeStartScan = 0; 1619 private int mTxTimeStartScan = 0; 1620 private int mRxTimeStartScan = 0; 1621 private int mOnTimeScan = 0; 1622 private int mTxTimeScan = 0; 1623 private int mRxTimeScan = 0; 1624 private int mOnTimeThisScan = 0; 1625 private int mTxTimeThisScan = 0; 1626 private int mRxTimeThisScan = 0; 1627 1628 private int mOnTimeScreenStateChange = 0; 1629 private int mOnTimeAtLastReport = 0; 1630 private long lastOntimeReportTimeStamp = 0; 1631 private long lastScreenStateChangeTimeStamp = 0; 1632 private int mOnTimeLastReport = 0; 1633 private int mTxTimeLastReport = 0; 1634 private int mRxTimeLastReport = 0; 1635 1636 private long lastLinkLayerStatsUpdate = 0; 1637 1638 String reportOnTime() { 1639 long now = System.currentTimeMillis(); 1640 StringBuilder sb = new StringBuilder(); 1641 // Report stats since last report 1642 int on = mOnTime - mOnTimeLastReport; 1643 mOnTimeLastReport = mOnTime; 1644 int tx = mTxTime - mTxTimeLastReport; 1645 mTxTimeLastReport = mTxTime; 1646 int rx = mRxTime - mRxTimeLastReport; 1647 mRxTimeLastReport = mRxTime; 1648 int period = (int) (now - lastOntimeReportTimeStamp); 1649 lastOntimeReportTimeStamp = now; 1650 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1651 // Report stats since Screen State Changed 1652 on = mOnTime - mOnTimeScreenStateChange; 1653 period = (int) (now - lastScreenStateChangeTimeStamp); 1654 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1655 return sb.toString(); 1656 } 1657 1658 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1659 WifiLinkLayerStats stats = null; 1660 if (mWifiLinkLayerStatsSupported > 0) { 1661 String name = "wlan0"; 1662 stats = mWifiNative.getWifiLinkLayerStats(name); 1663 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1664 mWifiLinkLayerStatsSupported -= 1; 1665 } else if (stats != null) { 1666 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1667 mOnTime = stats.on_time; 1668 mTxTime = stats.tx_time; 1669 mRxTime = stats.rx_time; 1670 mRunningBeaconCount = stats.beacon_rx; 1671 if (dbg) { 1672 loge(stats.toString()); 1673 } 1674 } 1675 } 1676 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1677 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1678 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1679 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1680 } else { 1681 mWifiInfo.updatePacketRates(stats); 1682 } 1683 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1684 return stats; 1685 } 1686 1687 void startRadioScanStats() { 1688 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1689 if (stats != null) { 1690 mOnTimeStartScan = stats.on_time; 1691 mTxTimeStartScan = stats.tx_time; 1692 mRxTimeStartScan = stats.rx_time; 1693 mOnTime = stats.on_time; 1694 mTxTime = stats.tx_time; 1695 mRxTime = stats.rx_time; 1696 } 1697 } 1698 1699 void closeRadioScanStats() { 1700 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1701 if (stats != null) { 1702 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1703 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1704 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1705 mOnTimeScan += mOnTimeThisScan; 1706 mTxTimeScan += mTxTimeThisScan; 1707 mRxTimeScan += mRxTimeThisScan; 1708 } 1709 } 1710 1711 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1712 private void noteScanStart(int callingUid, WorkSource workSource) { 1713 long now = System.currentTimeMillis(); 1714 lastStartScanTimeStamp = now; 1715 lastScanDuration = 0; 1716 if (DBG) { 1717 String ts = String.format("[%,d ms]", now); 1718 if (workSource != null) { 1719 loge(ts + " noteScanStart" + workSource.toString() 1720 + " uid " + Integer.toString(callingUid)); 1721 } else { 1722 loge(ts + " noteScanstart no scan source" 1723 + " uid " + Integer.toString(callingUid)); 1724 } 1725 } 1726 startRadioScanStats(); 1727 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1728 && callingUid != SCAN_ALARM_SOURCE) 1729 || workSource != null)) { 1730 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1731 try { 1732 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1733 } catch (RemoteException e) { 1734 log(e.toString()); 1735 } 1736 } 1737 } 1738 1739 private void noteScanEnd() { 1740 long now = System.currentTimeMillis(); 1741 if (lastStartScanTimeStamp != 0) { 1742 lastScanDuration = now - lastStartScanTimeStamp; 1743 } 1744 lastStartScanTimeStamp = 0; 1745 if (DBG) { 1746 String ts = String.format("[%,d ms]", now); 1747 if (mScanWorkSource != null) 1748 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1749 + " onTime=" + mOnTimeThisScan); 1750 else 1751 loge(ts + " noteScanEnd no scan source" 1752 + " onTime=" + mOnTimeThisScan); 1753 } 1754 if (mScanWorkSource != null) { 1755 try { 1756 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1757 } catch (RemoteException e) { 1758 log(e.toString()); 1759 } finally { 1760 mScanWorkSource = null; 1761 } 1762 } 1763 } 1764 1765 private void handleScanRequest(int type, Message message) { 1766 ScanSettings settings = null; 1767 WorkSource workSource = null; 1768 1769 // unbundle parameters 1770 Bundle bundle = (Bundle) message.obj; 1771 1772 if (bundle != null) { 1773 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1774 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1775 } 1776 1777 // parse scan settings 1778 String freqs = null; 1779 if (settings != null && settings.channelSet != null) { 1780 StringBuilder sb = new StringBuilder(); 1781 boolean first = true; 1782 for (WifiChannel channel : settings.channelSet) { 1783 if (!first) sb.append(','); 1784 else first = false; 1785 sb.append(channel.freqMHz); 1786 } 1787 freqs = sb.toString(); 1788 } 1789 1790 // call wifi native to start the scan 1791 if (startScanNative(type, freqs)) { 1792 // only count battery consumption if scan request is accepted 1793 noteScanStart(message.arg1, workSource); 1794 // a full scan covers everything, clearing scan request buffer 1795 if (freqs == null) 1796 mBufferedScanMsg.clear(); 1797 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1798 if (workSource != null) { 1799 // External worksource was passed along the scan request, 1800 // hence always send a broadcast 1801 mSendScanResultsBroadcast = true; 1802 } 1803 return; 1804 } 1805 1806 // if reach here, scan request is rejected 1807 1808 if (!mIsScanOngoing) { 1809 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1810 1811 // discard this request and pop up the next one 1812 if (mBufferedScanMsg.size() > 0) { 1813 sendMessage(mBufferedScanMsg.remove()); 1814 } 1815 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1816 } else if (!mIsFullScanOngoing) { 1817 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1818 // buffer the scan request to make sure specified channels will be scanned eventually 1819 if (freqs == null) 1820 mBufferedScanMsg.clear(); 1821 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1822 Message msg = obtainMessage(CMD_START_SCAN, 1823 message.arg1, message.arg2, bundle); 1824 mBufferedScanMsg.add(msg); 1825 } else { 1826 // if too many requests in buffer, combine them into a single full scan 1827 bundle = new Bundle(); 1828 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1829 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1830 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1831 mBufferedScanMsg.clear(); 1832 mBufferedScanMsg.add(msg); 1833 } 1834 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1835 } else { 1836 // mIsScanOngoing and mIsFullScanOngoing 1837 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1838 } 1839 } 1840 1841 1842 /** 1843 * return true iff scan request is accepted 1844 */ 1845 private boolean startScanNative(int type, String freqs) { 1846 if (mWifiNative.scan(type, freqs)) { 1847 mIsScanOngoing = true; 1848 mIsFullScanOngoing = (freqs == null); 1849 lastScanFreqs = freqs; 1850 return true; 1851 } 1852 return false; 1853 } 1854 1855 /** 1856 * TODO: doc 1857 */ 1858 public void setSupplicantRunning(boolean enable) { 1859 if (enable) { 1860 sendMessage(CMD_START_SUPPLICANT); 1861 } else { 1862 sendMessage(CMD_STOP_SUPPLICANT); 1863 } 1864 } 1865 1866 /** 1867 * TODO: doc 1868 */ 1869 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1870 if (enable) { 1871 sendMessage(CMD_START_AP, wifiConfig); 1872 } else { 1873 sendMessage(CMD_STOP_AP); 1874 } 1875 } 1876 1877 public void setWifiApConfiguration(WifiConfiguration config) { 1878 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1879 } 1880 1881 public WifiConfiguration syncGetWifiApConfiguration() { 1882 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1883 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1884 resultMsg.recycle(); 1885 return ret; 1886 } 1887 1888 /** 1889 * TODO: doc 1890 */ 1891 public int syncGetWifiState() { 1892 return mWifiState.get(); 1893 } 1894 1895 /** 1896 * TODO: doc 1897 */ 1898 public String syncGetWifiStateByName() { 1899 switch (mWifiState.get()) { 1900 case WIFI_STATE_DISABLING: 1901 return "disabling"; 1902 case WIFI_STATE_DISABLED: 1903 return "disabled"; 1904 case WIFI_STATE_ENABLING: 1905 return "enabling"; 1906 case WIFI_STATE_ENABLED: 1907 return "enabled"; 1908 case WIFI_STATE_UNKNOWN: 1909 return "unknown state"; 1910 default: 1911 return "[invalid state]"; 1912 } 1913 } 1914 1915 /** 1916 * TODO: doc 1917 */ 1918 public int syncGetWifiApState() { 1919 return mWifiApState.get(); 1920 } 1921 1922 /** 1923 * TODO: doc 1924 */ 1925 public String syncGetWifiApStateByName() { 1926 switch (mWifiApState.get()) { 1927 case WIFI_AP_STATE_DISABLING: 1928 return "disabling"; 1929 case WIFI_AP_STATE_DISABLED: 1930 return "disabled"; 1931 case WIFI_AP_STATE_ENABLING: 1932 return "enabling"; 1933 case WIFI_AP_STATE_ENABLED: 1934 return "enabled"; 1935 case WIFI_AP_STATE_FAILED: 1936 return "failed"; 1937 default: 1938 return "[invalid state]"; 1939 } 1940 } 1941 1942 /** 1943 * Get status information for the current connection, if any. 1944 * 1945 * @return a {@link WifiInfo} object containing information about the current connection 1946 */ 1947 public WifiInfo syncRequestConnectionInfo() { 1948 return getWiFiInfoForUid(Binder.getCallingUid()); 1949 } 1950 1951 public DhcpResults syncGetDhcpResults() { 1952 synchronized (mDhcpResultsLock) { 1953 return new DhcpResults(mDhcpResults); 1954 } 1955 } 1956 1957 /** 1958 * TODO: doc 1959 */ 1960 public void setDriverStart(boolean enable) { 1961 if (enable) { 1962 sendMessage(CMD_START_DRIVER); 1963 } else { 1964 sendMessage(CMD_STOP_DRIVER); 1965 } 1966 } 1967 1968 /** 1969 * TODO: doc 1970 */ 1971 public void setOperationalMode(int mode) { 1972 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 1973 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 1974 } 1975 1976 /** 1977 * TODO: doc 1978 */ 1979 public List<ScanResult> syncGetScanResultsList() { 1980 synchronized (mScanResultCache) { 1981 List<ScanResult> scanList = new ArrayList<ScanResult>(); 1982 for (ScanDetail result : mScanResults) { 1983 scanList.add(new ScanResult(result.getScanResult())); 1984 } 1985 return scanList; 1986 } 1987 } 1988 1989 public void disableEphemeralNetwork(String SSID) { 1990 if (SSID != null) { 1991 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 1992 } 1993 } 1994 1995 /** 1996 * Get unsynchronized pointer to scan result list 1997 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 1998 */ 1999 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2000 return mScanResults; 2001 } 2002 2003 /** 2004 * Disconnect from Access Point 2005 */ 2006 public void disconnectCommand() { 2007 sendMessage(CMD_DISCONNECT); 2008 } 2009 2010 public void disconnectCommand(int uid, int reason) { 2011 sendMessage(CMD_DISCONNECT, uid, reason); 2012 } 2013 2014 /** 2015 * Initiate a reconnection to AP 2016 */ 2017 public void reconnectCommand() { 2018 sendMessage(CMD_RECONNECT); 2019 } 2020 2021 /** 2022 * Initiate a re-association to AP 2023 */ 2024 public void reassociateCommand() { 2025 sendMessage(CMD_REASSOCIATE); 2026 } 2027 2028 /** 2029 * Reload networks and then reconnect; helps load correct data for TLS networks 2030 */ 2031 2032 public void reloadTlsNetworksAndReconnect() { 2033 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2034 } 2035 2036 /** 2037 * Add a network synchronously 2038 * 2039 * @return network id of the new network 2040 */ 2041 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2042 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2043 int result = resultMsg.arg1; 2044 resultMsg.recycle(); 2045 return result; 2046 } 2047 2048 /** 2049 * Get configured networks synchronously 2050 * 2051 * @param channel 2052 * @return 2053 */ 2054 2055 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2056 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2057 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2058 resultMsg.recycle(); 2059 return result; 2060 } 2061 2062 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2063 Message resultMsg = channel.sendMessageSynchronously( 2064 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2065 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2066 resultMsg.recycle(); 2067 return result; 2068 } 2069 2070 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2071 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2072 return (WifiConfiguration) resultMsg.obj; 2073 } 2074 2075 /** 2076 * Get connection statistics synchronously 2077 * 2078 * @param channel 2079 * @return 2080 */ 2081 2082 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2083 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2084 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2085 resultMsg.recycle(); 2086 return result; 2087 } 2088 2089 /** 2090 * Get adaptors synchronously 2091 */ 2092 2093 public int syncGetSupportedFeatures(AsyncChannel channel) { 2094 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2095 int supportedFeatureSet = resultMsg.arg1; 2096 resultMsg.recycle(); 2097 return supportedFeatureSet; 2098 } 2099 2100 /** 2101 * Get link layers stats for adapter synchronously 2102 */ 2103 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2104 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2105 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2106 resultMsg.recycle(); 2107 return result; 2108 } 2109 2110 /** 2111 * Delete a network 2112 * 2113 * @param networkId id of the network to be removed 2114 */ 2115 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2116 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2117 boolean result = (resultMsg.arg1 != FAILURE); 2118 resultMsg.recycle(); 2119 return result; 2120 } 2121 2122 /** 2123 * Enable a network 2124 * 2125 * @param netId network id of the network 2126 * @param disableOthers true, if all other networks have to be disabled 2127 * @return {@code true} if the operation succeeds, {@code false} otherwise 2128 */ 2129 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2130 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2131 disableOthers ? 1 : 0); 2132 boolean result = (resultMsg.arg1 != FAILURE); 2133 resultMsg.recycle(); 2134 return result; 2135 } 2136 2137 /** 2138 * Disable a network 2139 * 2140 * @param netId network id of the network 2141 * @return {@code true} if the operation succeeds, {@code false} otherwise 2142 */ 2143 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2144 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2145 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2146 resultMsg.recycle(); 2147 return result; 2148 } 2149 2150 /** 2151 * Retrieves a WPS-NFC configuration token for the specified network 2152 * 2153 * @return a hex string representation of the WPS-NFC configuration token 2154 */ 2155 public String syncGetWpsNfcConfigurationToken(int netId) { 2156 return mWifiNative.getNfcWpsConfigurationToken(netId); 2157 } 2158 2159 void enableBackgroundScan(boolean enable) { 2160 if (enable) { 2161 mWifiConfigStore.enableAllNetworks(); 2162 } 2163 mWifiNative.enableBackgroundScan(enable); 2164 } 2165 2166 /** 2167 * Blacklist a BSSID. This will avoid the AP if there are 2168 * alternate APs to connect 2169 * 2170 * @param bssid BSSID of the network 2171 */ 2172 public void addToBlacklist(String bssid) { 2173 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2174 } 2175 2176 /** 2177 * Clear the blacklist list 2178 */ 2179 public void clearBlacklist() { 2180 sendMessage(CMD_CLEAR_BLACKLIST); 2181 } 2182 2183 public void enableRssiPolling(boolean enabled) { 2184 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2185 } 2186 2187 public void enableAllNetworks() { 2188 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2189 } 2190 2191 /** 2192 * Start filtering Multicast v4 packets 2193 */ 2194 public void startFilteringMulticastV4Packets() { 2195 mFilteringMulticastV4Packets.set(true); 2196 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2197 } 2198 2199 /** 2200 * Stop filtering Multicast v4 packets 2201 */ 2202 public void stopFilteringMulticastV4Packets() { 2203 mFilteringMulticastV4Packets.set(false); 2204 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2205 } 2206 2207 /** 2208 * Start filtering Multicast v4 packets 2209 */ 2210 public void startFilteringMulticastV6Packets() { 2211 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2212 } 2213 2214 /** 2215 * Stop filtering Multicast v4 packets 2216 */ 2217 public void stopFilteringMulticastV6Packets() { 2218 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2219 } 2220 2221 /** 2222 * Set high performance mode of operation. 2223 * Enabling would set active power mode and disable suspend optimizations; 2224 * disabling would set auto power mode and enable suspend optimizations 2225 * 2226 * @param enable true if enable, false otherwise 2227 */ 2228 public void setHighPerfModeEnabled(boolean enable) { 2229 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2230 } 2231 2232 /** 2233 * Set the country code 2234 * 2235 * @param countryCode following ISO 3166 format 2236 * @param persist {@code true} if the setting should be remembered. 2237 */ 2238 public synchronized void setCountryCode(String countryCode, boolean persist) { 2239 // If it's a good country code, apply after the current 2240 // wifi connection is terminated; ignore resetting of code 2241 // for now (it is unclear what the chipset should do when 2242 // country code is reset) 2243 2244 if (TextUtils.isEmpty(countryCode)) { 2245 log("Ignoring resetting of country code"); 2246 } else { 2247 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2248 // else only when the new country code is different from the current one to set 2249 int countryCodeSequence = mCountryCodeSequence.get(); 2250 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2251 2252 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2253 mSetCountryCode = countryCode; 2254 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2255 countryCode); 2256 } 2257 2258 if (persist) { 2259 Settings.Global.putString(mContext.getContentResolver(), 2260 Settings.Global.WIFI_COUNTRY_CODE, 2261 countryCode); 2262 } 2263 } 2264 } 2265 2266 /** 2267 * Get Network object of current wifi network 2268 * @return Network object of current wifi network 2269 */ 2270 public Network getCurrentNetwork() { 2271 if (mNetworkAgent != null) { 2272 return new Network(mNetworkAgent.netId); 2273 } else { 2274 return null; 2275 } 2276 } 2277 2278 /** 2279 * Get the country code 2280 * 2281 * @param countryCode following ISO 3166 format 2282 */ 2283 public String getCountryCode() { 2284 return mSetCountryCode; 2285 } 2286 2287 2288 /** 2289 * Set the operational frequency band 2290 * 2291 * @param band 2292 * @param persist {@code true} if the setting should be remembered. 2293 */ 2294 public void setFrequencyBand(int band, boolean persist) { 2295 if (persist) { 2296 Settings.Global.putInt(mContext.getContentResolver(), 2297 Settings.Global.WIFI_FREQUENCY_BAND, 2298 band); 2299 } 2300 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2301 } 2302 2303 /** 2304 * Enable TDLS for a specific MAC address 2305 */ 2306 public void enableTdls(String remoteMacAddress, boolean enable) { 2307 int enabler = enable ? 1 : 0; 2308 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2309 } 2310 2311 /** 2312 * Returns the operational frequency band 2313 */ 2314 public int getFrequencyBand() { 2315 return mFrequencyBand.get(); 2316 } 2317 2318 /** 2319 * Returns the wifi configuration file 2320 */ 2321 public String getConfigFile() { 2322 return mWifiConfigStore.getConfigFile(); 2323 } 2324 2325 /** 2326 * Send a message indicating bluetooth adapter connection state changed 2327 */ 2328 public void sendBluetoothAdapterStateChange(int state) { 2329 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2330 } 2331 2332 /** 2333 * Send a message indicating a package has been uninstalled. 2334 */ 2335 public void removeAppConfigs(String packageName, int uid) { 2336 // Build partial AppInfo manually - package may not exist in database any more 2337 ApplicationInfo ai = new ApplicationInfo(); 2338 ai.packageName = packageName; 2339 ai.uid = uid; 2340 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2341 } 2342 2343 /** 2344 * Send a message indicating a user has been removed. 2345 */ 2346 public void removeUserConfigs(int userId) { 2347 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2348 } 2349 2350 /** 2351 * Save configuration on supplicant 2352 * 2353 * @return {@code true} if the operation succeeds, {@code false} otherwise 2354 * <p/> 2355 * TODO: deprecate this 2356 */ 2357 public boolean syncSaveConfig(AsyncChannel channel) { 2358 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2359 boolean result = (resultMsg.arg1 != FAILURE); 2360 resultMsg.recycle(); 2361 return result; 2362 } 2363 2364 public void updateBatteryWorkSource(WorkSource newSource) { 2365 synchronized (mRunningWifiUids) { 2366 try { 2367 if (newSource != null) { 2368 mRunningWifiUids.set(newSource); 2369 } 2370 if (mIsRunning) { 2371 if (mReportedRunning) { 2372 // If the work source has changed since last time, need 2373 // to remove old work from battery stats. 2374 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2375 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2376 mRunningWifiUids); 2377 mLastRunningWifiUids.set(mRunningWifiUids); 2378 } 2379 } else { 2380 // Now being started, report it. 2381 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2382 mLastRunningWifiUids.set(mRunningWifiUids); 2383 mReportedRunning = true; 2384 } 2385 } else { 2386 if (mReportedRunning) { 2387 // Last reported we were running, time to stop. 2388 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2389 mLastRunningWifiUids.clear(); 2390 mReportedRunning = false; 2391 } 2392 } 2393 mWakeLock.setWorkSource(newSource); 2394 } catch (RemoteException ignore) { 2395 } 2396 } 2397 } 2398 2399 @Override 2400 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2401 super.dump(fd, pw, args); 2402 mSupplicantStateTracker.dump(fd, pw, args); 2403 pw.println("mLinkProperties " + mLinkProperties); 2404 pw.println("mWifiInfo " + mWifiInfo); 2405 pw.println("mDhcpResults " + mDhcpResults); 2406 pw.println("mNetworkInfo " + mNetworkInfo); 2407 pw.println("mLastSignalLevel " + mLastSignalLevel); 2408 pw.println("mLastBssid " + mLastBssid); 2409 pw.println("mLastNetworkId " + mLastNetworkId); 2410 pw.println("mOperationalMode " + mOperationalMode); 2411 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2412 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2413 pw.println("Supplicant status " + mWifiNative.status(true)); 2414 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2415 pw.println("mSetCountryCode " + mSetCountryCode); 2416 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2417 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2418 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2419 mNetworkFactory.dump(fd, pw, args); 2420 mUntrustedNetworkFactory.dump(fd, pw, args); 2421 pw.println(); 2422 mWifiConfigStore.dump(fd, pw, args); 2423 pw.println("FW Version is: " + mWifiLogger.getFirmwareVersion()); 2424 pw.println("Driver Version is: " + mWifiLogger.getDriverVersion()); 2425 WifiLogger.RingBufferStatus[] status = mWifiLogger.getRingBufferStatus(); 2426 if (status != null) { 2427 for (WifiLogger.RingBufferStatus element : status) { 2428 pw.println("Ring buffer status: " + element); 2429 } 2430 } 2431 mWifiLogger.getAllRingBufferData(); 2432 pw.println("Start fw memory dump:-----------------------------------------------"); 2433 String fwDump = mWifiLogger.getFwMemoryDump(); 2434 if(fwDump != null) { 2435 pw.println(fwDump); 2436 } else { 2437 pw.println("Fail to get FW memory dump"); 2438 } 2439 pw.println("End fw memory dump:--------------------------------------------------"); 2440 } 2441 2442 /** 2443 * ****************************************************** 2444 * Internal private functions 2445 * ****************************************************** 2446 */ 2447 2448 private void logStateAndMessage(Message message, String state) { 2449 messageHandlingStatus = 0; 2450 if (mLogMessages) { 2451 //long now = SystemClock.elapsedRealtimeNanos(); 2452 //String ts = String.format("[%,d us]", now/1000); 2453 2454 loge(" " + state + " " + getLogRecString(message)); 2455 } 2456 } 2457 2458 /** 2459 * helper, prints the milli time since boot wi and w/o suspended time 2460 */ 2461 String printTime() { 2462 StringBuilder sb = new StringBuilder(); 2463 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2464 sb.append("/").append(SystemClock.elapsedRealtime()); 2465 return sb.toString(); 2466 } 2467 2468 /** 2469 * Return the additional string to be logged by LogRec, default 2470 * 2471 * @param msg that was processed 2472 * @return information to be logged as a String 2473 */ 2474 protected String getLogRecString(Message msg) { 2475 WifiConfiguration config; 2476 Long now; 2477 String report; 2478 String key; 2479 StringBuilder sb = new StringBuilder(); 2480 if (mScreenOn) { 2481 sb.append("!"); 2482 } 2483 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2484 sb.append("(").append(messageHandlingStatus).append(")"); 2485 } 2486 sb.append(smToString(msg)); 2487 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2488 sb.append(" uid=" + msg.sendingUid); 2489 } 2490 switch (msg.what) { 2491 case CMD_STARTED_GSCAN_DBG: 2492 sb.append(" "); 2493 sb.append(Integer.toString(msg.arg1)); 2494 sb.append(" "); 2495 sb.append(Integer.toString(msg.arg2)); 2496 if (msg.obj != null) { 2497 sb.append((String)msg.obj); 2498 } 2499 break; 2500 case CMD_STARTED_PNO_DBG: 2501 sb.append(" "); 2502 sb.append(Integer.toString(msg.arg1)); 2503 sb.append(" "); 2504 sb.append(Integer.toString(msg.arg2)); 2505 if (msg.obj != null) { 2506 sb.append((String)msg.obj); 2507 } 2508 break; 2509 case CMD_PNO_NETWORK_FOUND: 2510 sb.append(" "); 2511 sb.append(Integer.toString(msg.arg1)); 2512 sb.append(" "); 2513 sb.append(Integer.toString(msg.arg2)); 2514 if (msg.obj != null) { 2515 ScanResult[] results = (ScanResult[])msg.obj; 2516 for (int i = 0; i < results.length; i++) { 2517 sb.append(" ").append(results[i].SSID).append(" "); 2518 sb.append(results[i].frequency); 2519 sb.append(" ").append(results[i].level); 2520 } 2521 } 2522 break; 2523 case CMD_START_SCAN: 2524 now = System.currentTimeMillis(); 2525 sb.append(" "); 2526 sb.append(Integer.toString(msg.arg1)); 2527 sb.append(" "); 2528 sb.append(Integer.toString(msg.arg2)); 2529 sb.append(" ic="); 2530 sb.append(Integer.toString(sScanAlarmIntentCount)); 2531 if (msg.obj != null) { 2532 Bundle bundle = (Bundle) msg.obj; 2533 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2534 if (request != 0) { 2535 sb.append(" proc(ms):").append(now - request); 2536 } 2537 } 2538 if (mIsScanOngoing) sb.append(" onGoing"); 2539 if (mIsFullScanOngoing) sb.append(" full"); 2540 if (lastStartScanTimeStamp != 0) { 2541 sb.append(" started:").append(lastStartScanTimeStamp); 2542 sb.append(",").append(now - lastStartScanTimeStamp); 2543 } 2544 if (lastScanDuration != 0) { 2545 sb.append(" dur:").append(lastScanDuration); 2546 } 2547 sb.append(" cnt=").append(mDelayedScanCounter); 2548 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2549 sb.append(" f=").append(mWifiInfo.getFrequency()); 2550 sb.append(" sc=").append(mWifiInfo.score); 2551 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2552 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2553 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2554 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2555 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2556 if (lastScanFreqs != null) { 2557 sb.append(" list=").append(lastScanFreqs); 2558 } else { 2559 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2560 } 2561 report = reportOnTime(); 2562 if (report != null) { 2563 sb.append(" ").append(report); 2564 } 2565 break; 2566 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2567 sb.append(" "); 2568 sb.append(Integer.toString(msg.arg1)); 2569 sb.append(" "); 2570 sb.append(Integer.toString(msg.arg2)); 2571 sb.append(printTime()); 2572 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2573 if (stateChangeResult != null) { 2574 sb.append(stateChangeResult.toString()); 2575 } 2576 break; 2577 case WifiManager.SAVE_NETWORK: 2578 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2579 sb.append(" "); 2580 sb.append(Integer.toString(msg.arg1)); 2581 sb.append(" "); 2582 sb.append(Integer.toString(msg.arg2)); 2583 if (lastSavedConfigurationAttempt != null) { 2584 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2585 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2586 if (lastSavedConfigurationAttempt.hiddenSSID) { 2587 sb.append(" hidden"); 2588 } 2589 if (lastSavedConfigurationAttempt.preSharedKey != null 2590 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2591 sb.append(" hasPSK"); 2592 } 2593 if (lastSavedConfigurationAttempt.ephemeral) { 2594 sb.append(" ephemeral"); 2595 } 2596 if (lastSavedConfigurationAttempt.selfAdded) { 2597 sb.append(" selfAdded"); 2598 } 2599 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2600 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2601 } 2602 break; 2603 case WifiManager.FORGET_NETWORK: 2604 sb.append(" "); 2605 sb.append(Integer.toString(msg.arg1)); 2606 sb.append(" "); 2607 sb.append(Integer.toString(msg.arg2)); 2608 if (lastForgetConfigurationAttempt != null) { 2609 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2610 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2611 if (lastForgetConfigurationAttempt.hiddenSSID) { 2612 sb.append(" hidden"); 2613 } 2614 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2615 sb.append(" hasPSK"); 2616 } 2617 if (lastForgetConfigurationAttempt.ephemeral) { 2618 sb.append(" ephemeral"); 2619 } 2620 if (lastForgetConfigurationAttempt.selfAdded) { 2621 sb.append(" selfAdded"); 2622 } 2623 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2624 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2625 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2626 } 2627 break; 2628 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2629 sb.append(" "); 2630 sb.append(Integer.toString(msg.arg1)); 2631 sb.append(" "); 2632 sb.append(Integer.toString(msg.arg2)); 2633 String bssid = (String) msg.obj; 2634 if (bssid != null && bssid.length() > 0) { 2635 sb.append(" "); 2636 sb.append(bssid); 2637 } 2638 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2639 sb.append(printTime()); 2640 break; 2641 case WifiMonitor.SCAN_RESULTS_EVENT: 2642 sb.append(" "); 2643 sb.append(Integer.toString(msg.arg1)); 2644 sb.append(" "); 2645 sb.append(Integer.toString(msg.arg2)); 2646 if (mScanResults != null) { 2647 sb.append(" found="); 2648 sb.append(mScanResults.size()); 2649 } 2650 sb.append(" known=").append(mNumScanResultsKnown); 2651 sb.append(" got=").append(mNumScanResultsReturned); 2652 if (lastScanDuration != 0) { 2653 sb.append(" dur:").append(lastScanDuration); 2654 } 2655 if (mOnTime != 0) { 2656 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2657 sb.append(",").append(mOnTime); 2658 } 2659 if (mTxTime != 0) { 2660 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2661 sb.append(",").append(mTxTime); 2662 } 2663 if (mRxTime != 0) { 2664 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2665 sb.append(",").append(mRxTime); 2666 } 2667 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2668 sb.append(String.format(" con=%d", mConnectionRequests)); 2669 key = mWifiConfigStore.getLastSelectedConfiguration(); 2670 if (key != null) { 2671 sb.append(" last=").append(key); 2672 } 2673 break; 2674 case WifiMonitor.SCAN_FAILED_EVENT: 2675 break; 2676 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2677 sb.append(" "); 2678 sb.append(Integer.toString(msg.arg1)); 2679 sb.append(" "); 2680 sb.append(Integer.toString(msg.arg2)); 2681 sb.append(" ").append(mLastBssid); 2682 sb.append(" nid=").append(mLastNetworkId); 2683 config = getCurrentWifiConfiguration(); 2684 if (config != null) { 2685 sb.append(" ").append(config.configKey()); 2686 } 2687 sb.append(printTime()); 2688 key = mWifiConfigStore.getLastSelectedConfiguration(); 2689 if (key != null) { 2690 sb.append(" last=").append(key); 2691 } 2692 break; 2693 case CMD_TARGET_BSSID: 2694 case CMD_ASSOCIATED_BSSID: 2695 sb.append(" "); 2696 sb.append(Integer.toString(msg.arg1)); 2697 sb.append(" "); 2698 sb.append(Integer.toString(msg.arg2)); 2699 if (msg.obj != null) { 2700 sb.append(" BSSID=").append((String) msg.obj); 2701 } 2702 if (mTargetRoamBSSID != null) { 2703 sb.append(" Target=").append(mTargetRoamBSSID); 2704 } 2705 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2706 sb.append(printTime()); 2707 break; 2708 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2709 if (msg.obj != null) { 2710 sb.append(" ").append((String) msg.obj); 2711 } 2712 sb.append(" nid=").append(msg.arg1); 2713 sb.append(" reason=").append(msg.arg2); 2714 if (mLastBssid != null) { 2715 sb.append(" lastbssid=").append(mLastBssid); 2716 } 2717 if (mWifiInfo.getFrequency() != -1) { 2718 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2719 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2720 } 2721 if (linkDebouncing) { 2722 sb.append(" debounce"); 2723 } 2724 sb.append(printTime()); 2725 break; 2726 case WifiMonitor.SSID_TEMP_DISABLED: 2727 case WifiMonitor.SSID_REENABLED: 2728 sb.append(" nid=").append(msg.arg1); 2729 if (msg.obj != null) { 2730 sb.append(" ").append((String) msg.obj); 2731 } 2732 config = getCurrentWifiConfiguration(); 2733 if (config != null) { 2734 sb.append(" cur=").append(config.configKey()); 2735 sb.append(" ajst=").append(config.autoJoinStatus); 2736 if (config.selfAdded) { 2737 sb.append(" selfAdded"); 2738 } 2739 if (config.status != 0) { 2740 sb.append(" st=").append(config.status); 2741 sb.append(" rs=").append(config.disableReason); 2742 } 2743 if (config.lastConnected != 0) { 2744 now = System.currentTimeMillis(); 2745 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2746 } 2747 if (mLastBssid != null) { 2748 sb.append(" lastbssid=").append(mLastBssid); 2749 } 2750 if (mWifiInfo.getFrequency() != -1) { 2751 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2752 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2753 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2754 } 2755 } 2756 sb.append(printTime()); 2757 break; 2758 case CMD_RSSI_POLL: 2759 case CMD_UNWANTED_NETWORK: 2760 case WifiManager.RSSI_PKTCNT_FETCH: 2761 sb.append(" "); 2762 sb.append(Integer.toString(msg.arg1)); 2763 sb.append(" "); 2764 sb.append(Integer.toString(msg.arg2)); 2765 if (mWifiInfo.getSSID() != null) 2766 if (mWifiInfo.getSSID() != null) 2767 sb.append(" ").append(mWifiInfo.getSSID()); 2768 if (mWifiInfo.getBSSID() != null) 2769 sb.append(" ").append(mWifiInfo.getBSSID()); 2770 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2771 sb.append(" f=").append(mWifiInfo.getFrequency()); 2772 sb.append(" sc=").append(mWifiInfo.score); 2773 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2774 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2775 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2776 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2777 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2778 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2779 report = reportOnTime(); 2780 if (report != null) { 2781 sb.append(" ").append(report); 2782 } 2783 if (wifiScoringReport != null) { 2784 sb.append(wifiScoringReport); 2785 } 2786 break; 2787 case CMD_AUTO_CONNECT: 2788 case WifiManager.CONNECT_NETWORK: 2789 sb.append(" "); 2790 sb.append(Integer.toString(msg.arg1)); 2791 sb.append(" "); 2792 sb.append(Integer.toString(msg.arg2)); 2793 config = (WifiConfiguration) msg.obj; 2794 if (config != null) { 2795 sb.append(" ").append(config.configKey()); 2796 if (config.visibility != null) { 2797 sb.append(" ").append(config.visibility.toString()); 2798 } 2799 } 2800 if (mTargetRoamBSSID != null) { 2801 sb.append(" ").append(mTargetRoamBSSID); 2802 } 2803 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2804 sb.append(printTime()); 2805 config = getCurrentWifiConfiguration(); 2806 if (config != null) { 2807 sb.append(config.configKey()); 2808 if (config.visibility != null) { 2809 sb.append(" ").append(config.visibility.toString()); 2810 } 2811 } 2812 break; 2813 case CMD_AUTO_ROAM: 2814 sb.append(" "); 2815 sb.append(Integer.toString(msg.arg1)); 2816 sb.append(" "); 2817 sb.append(Integer.toString(msg.arg2)); 2818 ScanResult result = (ScanResult) msg.obj; 2819 if (result != null) { 2820 now = System.currentTimeMillis(); 2821 sb.append(" bssid=").append(result.BSSID); 2822 sb.append(" rssi=").append(result.level); 2823 sb.append(" freq=").append(result.frequency); 2824 if (result.seen > 0 && result.seen < now) { 2825 sb.append(" seen=").append(now - result.seen); 2826 } else { 2827 // Somehow the timestamp for this scan result is inconsistent 2828 sb.append(" !seen=").append(result.seen); 2829 } 2830 } 2831 if (mTargetRoamBSSID != null) { 2832 sb.append(" ").append(mTargetRoamBSSID); 2833 } 2834 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2835 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2836 sb.append(printTime()); 2837 break; 2838 case CMD_ADD_OR_UPDATE_NETWORK: 2839 sb.append(" "); 2840 sb.append(Integer.toString(msg.arg1)); 2841 sb.append(" "); 2842 sb.append(Integer.toString(msg.arg2)); 2843 if (msg.obj != null) { 2844 config = (WifiConfiguration) msg.obj; 2845 sb.append(" ").append(config.configKey()); 2846 sb.append(" prio=").append(config.priority); 2847 sb.append(" status=").append(config.status); 2848 if (config.BSSID != null) { 2849 sb.append(" ").append(config.BSSID); 2850 } 2851 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2852 if (curConfig != null) { 2853 if (curConfig.configKey().equals(config.configKey())) { 2854 sb.append(" is current"); 2855 } else { 2856 sb.append(" current=").append(curConfig.configKey()); 2857 sb.append(" prio=").append(curConfig.priority); 2858 sb.append(" status=").append(curConfig.status); 2859 } 2860 } 2861 } 2862 break; 2863 case WifiManager.DISABLE_NETWORK: 2864 case CMD_ENABLE_NETWORK: 2865 sb.append(" "); 2866 sb.append(Integer.toString(msg.arg1)); 2867 sb.append(" "); 2868 sb.append(Integer.toString(msg.arg2)); 2869 key = mWifiConfigStore.getLastSelectedConfiguration(); 2870 if (key != null) { 2871 sb.append(" last=").append(key); 2872 } 2873 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2874 if (config != null && (key == null || !config.configKey().equals(key))) { 2875 sb.append(" target=").append(key); 2876 } 2877 break; 2878 case CMD_GET_CONFIGURED_NETWORKS: 2879 sb.append(" "); 2880 sb.append(Integer.toString(msg.arg1)); 2881 sb.append(" "); 2882 sb.append(Integer.toString(msg.arg2)); 2883 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2884 break; 2885 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2886 sb.append(" "); 2887 sb.append(Integer.toString(msg.arg1)); 2888 sb.append(" "); 2889 sb.append(Integer.toString(msg.arg2)); 2890 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2891 sb.append(",").append(mWifiInfo.txBad); 2892 sb.append(",").append(mWifiInfo.txRetries); 2893 break; 2894 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2895 sb.append(" "); 2896 sb.append(Integer.toString(msg.arg1)); 2897 sb.append(" "); 2898 sb.append(Integer.toString(msg.arg2)); 2899 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2900 sb.append(" OK "); 2901 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2902 sb.append(" FAIL "); 2903 } 2904 if (mLinkProperties != null) { 2905 if (mLinkProperties.hasIPv4Address()) { 2906 sb.append(" v4"); 2907 } 2908 if (mLinkProperties.hasGlobalIPv6Address()) { 2909 sb.append(" v6"); 2910 } 2911 if (mLinkProperties.hasIPv4DefaultRoute()) { 2912 sb.append(" v4r"); 2913 } 2914 if (mLinkProperties.hasIPv6DefaultRoute()) { 2915 sb.append(" v6r"); 2916 } 2917 if (mLinkProperties.hasIPv4DnsServer()) { 2918 sb.append(" v4dns"); 2919 } 2920 if (mLinkProperties.hasIPv6DnsServer()) { 2921 sb.append(" v6dns"); 2922 } 2923 } 2924 break; 2925 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2926 sb.append(" "); 2927 sb.append(Integer.toString(msg.arg1)); 2928 sb.append(" "); 2929 sb.append(Integer.toString(msg.arg2)); 2930 if (msg.obj != null) { 2931 NetworkInfo info = (NetworkInfo) msg.obj; 2932 NetworkInfo.State state = info.getState(); 2933 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2934 if (state != null) { 2935 sb.append(" st=").append(state); 2936 } 2937 if (detailedState != null) { 2938 sb.append("/").append(detailedState); 2939 } 2940 } 2941 break; 2942 case CMD_IP_CONFIGURATION_LOST: 2943 int count = -1; 2944 WifiConfiguration c = getCurrentWifiConfiguration(); 2945 if (c != null) count = c.numIpConfigFailures; 2946 sb.append(" "); 2947 sb.append(Integer.toString(msg.arg1)); 2948 sb.append(" "); 2949 sb.append(Integer.toString(msg.arg2)); 2950 sb.append(" failures: "); 2951 sb.append(Integer.toString(count)); 2952 sb.append("/"); 2953 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2954 if (mWifiInfo.getBSSID() != null) { 2955 sb.append(" ").append(mWifiInfo.getBSSID()); 2956 } 2957 if (c != null) { 2958 ScanDetailCache scanDetailCache = 2959 mWifiConfigStore.getScanDetailCache(c); 2960 if (scanDetailCache != null) { 2961 for (ScanDetail sd : scanDetailCache.values()) { 2962 ScanResult r = sd.getScanResult(); 2963 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2964 sb.append(" ipfail=").append(r.numIpConfigFailures); 2965 sb.append(",st=").append(r.autoJoinStatus); 2966 } 2967 } 2968 } 2969 sb.append(" -> ajst=").append(c.autoJoinStatus); 2970 sb.append(" ").append(c.disableReason); 2971 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2972 sb.append(",").append(mWifiInfo.txBad); 2973 sb.append(",").append(mWifiInfo.txRetries); 2974 } 2975 sb.append(printTime()); 2976 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2977 break; 2978 case CMD_UPDATE_LINKPROPERTIES: 2979 sb.append(" "); 2980 sb.append(Integer.toString(msg.arg1)); 2981 sb.append(" "); 2982 sb.append(Integer.toString(msg.arg2)); 2983 if (mLinkProperties != null) { 2984 if (mLinkProperties.hasIPv4Address()) { 2985 sb.append(" v4"); 2986 } 2987 if (mLinkProperties.hasGlobalIPv6Address()) { 2988 sb.append(" v6"); 2989 } 2990 if (mLinkProperties.hasIPv4DefaultRoute()) { 2991 sb.append(" v4r"); 2992 } 2993 if (mLinkProperties.hasIPv6DefaultRoute()) { 2994 sb.append(" v6r"); 2995 } 2996 if (mLinkProperties.hasIPv4DnsServer()) { 2997 sb.append(" v4dns"); 2998 } 2999 if (mLinkProperties.hasIPv6DnsServer()) { 3000 sb.append(" v6dns"); 3001 } 3002 } 3003 break; 3004 case CMD_IP_REACHABILITY_LOST: 3005 if (msg.obj != null) { 3006 sb.append(" ").append((String) msg.obj); 3007 } 3008 break; 3009 case CMD_SET_COUNTRY_CODE: 3010 sb.append(" "); 3011 sb.append(Integer.toString(msg.arg1)); 3012 sb.append(" "); 3013 sb.append(Integer.toString(msg.arg2)); 3014 if (msg.obj != null) { 3015 sb.append(" ").append((String) msg.obj); 3016 } 3017 break; 3018 case CMD_ROAM_WATCHDOG_TIMER: 3019 sb.append(" "); 3020 sb.append(Integer.toString(msg.arg1)); 3021 sb.append(" "); 3022 sb.append(Integer.toString(msg.arg2)); 3023 sb.append(" cur=").append(roamWatchdogCount); 3024 break; 3025 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3026 sb.append(" "); 3027 sb.append(Integer.toString(msg.arg1)); 3028 sb.append(" "); 3029 sb.append(Integer.toString(msg.arg2)); 3030 sb.append(" cur=").append(disconnectingWatchdogCount); 3031 break; 3032 default: 3033 sb.append(" "); 3034 sb.append(Integer.toString(msg.arg1)); 3035 sb.append(" "); 3036 sb.append(Integer.toString(msg.arg2)); 3037 break; 3038 } 3039 3040 return sb.toString(); 3041 } 3042 3043 private void stopGscanOffload() { 3044 3045 // clear the PNO list 3046 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3047 Log.e(TAG, "Failed to stop pno"); 3048 } 3049 3050 stopGScan(); 3051 } 3052 3053 // In associated more, lazy roam will be looking for 5GHz roam candidate 3054 private boolean configureLazyRoam() { 3055 boolean status; 3056 if (!useHalBasedAutoJoinOffload()) return false; 3057 3058 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3059 params.A_band_boost_threshold = -10 + mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3060 params.A_band_penalty_threshold = -10 + mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3061 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3062 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3063 params.A_band_max_boost = 50; 3064 params.lazy_roam_hysteresis = 25; 3065 params.alert_roam_rssi_trigger = -75; 3066 3067 loge("configureLazyRoam " + params.toString()); 3068 3069 if (!WifiNative.setLazyRoam(true, params)) { 3070 3071 loge("configureLazyRoam couldnt program params"); 3072 3073 return false; 3074 } 3075 loge("configureLazyRoam success"); 3076 3077 return true; 3078 } 3079 3080 // In associated more, lazy roam will be looking for 5GHz roam candidate 3081 private boolean stopLazyRoam() { 3082 boolean status; 3083 if (!useHalBasedAutoJoinOffload()) return false; 3084 3085 return WifiNative.setLazyRoam(false, null); 3086 } 3087 3088 private boolean startGScanConnectedModeOffload() { 3089 stopGScan(); 3090 if (!mScreenOn) return false; 3091 3092 mWifiNative.pauseScan(); 3093 mPnoEnabled = configurePno(); 3094 if (mPnoEnabled == false) { 3095 mWifiNative.restartScan(); 3096 return false; 3097 } 3098 mLazyRoamEnabled = configureLazyRoam(); 3099 if (mLazyRoamEnabled == false) { 3100 mWifiNative.restartScan(); 3101 return false; 3102 } 3103 if (!startConnectedGScan()) { 3104 mWifiNative.restartScan(); 3105 return false; 3106 } 3107 mWifiNative.restartScan(); 3108 mConnectedModeGScanOffloadStarted = true; 3109 return true; 3110 } 3111 3112 private boolean startGScanDisconnectedModeOffload() { 3113 stopGScan(); 3114 mWifiNative.pauseScan(); 3115 mPnoEnabled = configurePno(); 3116 if (mPnoEnabled == false) { 3117 mWifiNative.restartScan(); 3118 return false; 3119 } 3120 if (!startDisconnectedGScan()) { 3121 mWifiNative.restartScan(); 3122 return false; 3123 } 3124 mWifiNative.restartScan(); 3125 return true; 3126 } 3127 3128 private boolean configurePno() { 3129 if (!useHalBasedAutoJoinOffload()) return false; 3130 3131 if (mWifiScanner == null) { 3132 log("configurePno: mWifiScanner is null "); 3133 return true; 3134 } 3135 3136 List<WifiNative.WifiPnoNetwork> llist 3137 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3138 if (llist == null || llist.size() == 0) { 3139 stopGscanOffload(); 3140 log("configurePno: empty PNO list "); 3141 return true; 3142 } 3143 if (DBG) { 3144 log("configurePno: got llist size " + llist.size()); 3145 } 3146 3147 // first program the network we want to look for thru the pno API 3148 WifiNative.WifiPnoNetwork list[] 3149 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3150 3151 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3152 Log.e(TAG, "Failed to set pno, length = " + list.length); 3153 return false; 3154 } 3155 3156 if (true) { 3157 StringBuilder sb = new StringBuilder(); 3158 for (WifiNative.WifiPnoNetwork network : list) { 3159 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3160 sb.append(" flags="); 3161 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3162 sb.append("] "); 3163 3164 } 3165 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3166 } 3167 return true; 3168 } 3169 3170 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3171 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3172 3173 private boolean startConnectedGScan() { 3174 // send a scan background request so as to kick firmware 3175 // 5GHz roaming and autojoin 3176 // We do this only if screen is on 3177 WifiScanner.ScanSettings settings; 3178 3179 if (mPnoEnabled || mLazyRoamEnabled) { 3180 settings = new WifiScanner.ScanSettings(); 3181 settings.band = WifiScanner.WIFI_BAND_BOTH; 3182 long now = System.currentTimeMillis(); 3183 3184 if (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3185 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI)) { 3186 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3187 } else { 3188 mGScanStartTimeMilli = now; 3189 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3190 // if we start offload with short interval, then reconfigure it after a given 3191 // duration of time so as to reduce the scan frequency 3192 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, 3193 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI); 3194 } 3195 mGScanPeriodMilli = settings.periodInMs; 3196 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3197 if (DBG) { 3198 log("startConnectedScan: settings band="+ settings.band 3199 + " period=" + settings.periodInMs); 3200 } 3201 3202 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3203 if (true) { 3204 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli); 3205 } 3206 } 3207 return true; 3208 } 3209 3210 private boolean startDisconnectedGScan() { 3211 // send a scan background request so as to kick firmware 3212 // PNO 3213 // This is done in both screen On and screen Off modes 3214 WifiScanner.ScanSettings settings; 3215 3216 if (mWifiScanner == null) { 3217 log("startDisconnectedGScan: no wifi scanner"); 3218 return false; 3219 } 3220 3221 if (mPnoEnabled || mLazyRoamEnabled) { 3222 settings = new WifiScanner.ScanSettings(); 3223 settings.band = WifiScanner.WIFI_BAND_BOTH; 3224 long now = System.currentTimeMillis(); 3225 3226 3227 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3228 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI)) { 3229 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3230 } else { 3231 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3232 mGScanStartTimeMilli = now; 3233 // if we start offload with short interval, then reconfigure it after a given 3234 // duration of time so as to reduce the scan frequency 3235 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, 3236 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI); 3237 } 3238 mGScanPeriodMilli = settings.periodInMs; 3239 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3240 if (DBG) { 3241 log("startDisconnectedScan: settings band="+ settings.band 3242 + " period=" + settings.periodInMs); 3243 } 3244 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3245 if (true) { 3246 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli); 3247 } 3248 } 3249 return true; 3250 } 3251 3252 private boolean stopGScan() { 3253 mGScanStartTimeMilli = 0; 3254 mGScanPeriodMilli = 0; 3255 if (mWifiScanner != null) { 3256 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3257 } 3258 mConnectedModeGScanOffloadStarted = false; 3259 if (true) { 3260 sendMessage(CMD_STARTED_GSCAN_DBG, 0); 3261 } 3262 return true; 3263 } 3264 3265 private void handleScreenStateChanged(boolean screenOn) { 3266 mScreenOn = screenOn; 3267 if (PDBG) { 3268 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3269 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3270 + " state " + getCurrentState().getName() 3271 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3272 } 3273 enableRssiPolling(screenOn); 3274 if (screenOn) enableAllNetworks(); 3275 if (mUserWantsSuspendOpt.get()) { 3276 if (screenOn) { 3277 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3278 } else { 3279 // Allow 2s for suspend optimizations to be set 3280 mSuspendWakeLock.acquire(2000); 3281 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3282 } 3283 } 3284 mScreenBroadcastReceived.set(true); 3285 3286 getWifiLinkLayerStats(false); 3287 mOnTimeScreenStateChange = mOnTime; 3288 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3289 mEnableBackgroundScan = mScreenOn == false; 3290 cancelDelayedScan(); 3291 3292 if (screenOn) { 3293 setScanAlarm(false); 3294 clearBlacklist(); 3295 3296 fullBandConnectedTimeIntervalMilli 3297 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3298 // In either Disconnectedstate or ConnectedState, 3299 // start the scan alarm so as to enable autojoin 3300 if (getCurrentState() == mConnectedState 3301 && allowFullBandScanAndAssociated()) { 3302 if (useHalBasedAutoJoinOffload()) { 3303 startGScanConnectedModeOffload(); 3304 } else { 3305 // Scan after 500ms 3306 startDelayedScan(500, null, null); 3307 } 3308 } else if (getCurrentState() == mDisconnectedState) { 3309 if (useHalBasedAutoJoinOffload()) { 3310 startGScanDisconnectedModeOffload(); 3311 } else { 3312 // Scan after 500ms 3313 startDelayedScan(500, null, null); 3314 } 3315 } 3316 } else { 3317 if (getCurrentState() == mDisconnectedState) { 3318 // Screen Off and Disconnected and chipset doesn't support scan offload 3319 // => start scan alarm 3320 // Screen Off and Disconnected and chipset does support scan offload 3321 // => will use scan offload (i.e. background scan) 3322 if (useHalBasedAutoJoinOffload()) { 3323 startGScanDisconnectedModeOffload(); 3324 } else { 3325 if (!mBackgroundScanSupported) { 3326 setScanAlarm(true); 3327 } else { 3328 mEnableBackgroundScan = true; 3329 } 3330 } 3331 } else { 3332 stopGScan(); 3333 } 3334 } 3335 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan); 3336 if (mEnableBackgroundScan) { 3337 // to scan for them in background, we need all networks enabled 3338 enableBackgroundScan(mEnableBackgroundScan); 3339 } 3340 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3341 } 3342 3343 private void checkAndSetConnectivityInstance() { 3344 if (mCm == null) { 3345 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3346 } 3347 } 3348 3349 private boolean startTethering(ArrayList<String> available) { 3350 3351 boolean wifiAvailable = false; 3352 3353 checkAndSetConnectivityInstance(); 3354 3355 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3356 3357 for (String intf : available) { 3358 for (String regex : wifiRegexs) { 3359 if (intf.matches(regex)) { 3360 3361 InterfaceConfiguration ifcg = null; 3362 try { 3363 ifcg = mNwService.getInterfaceConfig(intf); 3364 if (ifcg != null) { 3365 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3366 ifcg.setLinkAddress(new LinkAddress( 3367 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3368 ifcg.setInterfaceUp(); 3369 3370 mNwService.setInterfaceConfig(intf, ifcg); 3371 } 3372 } catch (Exception e) { 3373 loge("Error configuring interface " + intf + ", :" + e); 3374 return false; 3375 } 3376 3377 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3378 loge("Error tethering on " + intf); 3379 return false; 3380 } 3381 mTetherInterfaceName = intf; 3382 return true; 3383 } 3384 } 3385 } 3386 // We found no interfaces to tether 3387 return false; 3388 } 3389 3390 private void stopTethering() { 3391 3392 checkAndSetConnectivityInstance(); 3393 3394 /* Clear the interface config to allow dhcp correctly configure new 3395 ip settings */ 3396 InterfaceConfiguration ifcg = null; 3397 try { 3398 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3399 if (ifcg != null) { 3400 ifcg.setLinkAddress( 3401 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3402 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3403 } 3404 } catch (Exception e) { 3405 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3406 } 3407 3408 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3409 loge("Untether initiate failed!"); 3410 } 3411 } 3412 3413 private boolean isWifiTethered(ArrayList<String> active) { 3414 3415 checkAndSetConnectivityInstance(); 3416 3417 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3418 for (String intf : active) { 3419 for (String regex : wifiRegexs) { 3420 if (intf.matches(regex)) { 3421 return true; 3422 } 3423 } 3424 } 3425 // We found no interfaces that are tethered 3426 return false; 3427 } 3428 3429 /** 3430 * Set the country code from the system setting value, if any. 3431 */ 3432 private void setCountryCode() { 3433 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3434 Settings.Global.WIFI_COUNTRY_CODE); 3435 if (countryCode != null && !countryCode.isEmpty()) { 3436 setCountryCode(countryCode, false); 3437 } else { 3438 //use driver default 3439 } 3440 } 3441 3442 /** 3443 * Set the frequency band from the system setting value, if any. 3444 */ 3445 private void setFrequencyBand() { 3446 int band = Settings.Global.getInt(mContext.getContentResolver(), 3447 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3448 setFrequencyBand(band, false); 3449 } 3450 3451 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3452 if (DBG) { 3453 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3454 + " -want " + mUserWantsSuspendOpt.get() 3455 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3456 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3457 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3458 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3459 } 3460 //mWifiNative.setSuspendOptimizations(enabled); 3461 3462 if (enabled) { 3463 mSuspendOptNeedsDisabled &= ~reason; 3464 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3465 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3466 if (DBG) { 3467 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3468 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3469 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3470 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3471 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3472 } 3473 mWifiNative.setSuspendOptimizations(true); 3474 } 3475 } else { 3476 mSuspendOptNeedsDisabled |= reason; 3477 mWifiNative.setSuspendOptimizations(false); 3478 } 3479 } 3480 3481 private void setSuspendOptimizations(int reason, boolean enabled) { 3482 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3483 if (enabled) { 3484 mSuspendOptNeedsDisabled &= ~reason; 3485 } else { 3486 mSuspendOptNeedsDisabled |= reason; 3487 } 3488 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3489 } 3490 3491 private void setWifiState(int wifiState) { 3492 final int previousWifiState = mWifiState.get(); 3493 3494 try { 3495 if (wifiState == WIFI_STATE_ENABLED) { 3496 mBatteryStats.noteWifiOn(); 3497 } else if (wifiState == WIFI_STATE_DISABLED) { 3498 mBatteryStats.noteWifiOff(); 3499 } 3500 } catch (RemoteException e) { 3501 loge("Failed to note battery stats in wifi"); 3502 } 3503 3504 mWifiState.set(wifiState); 3505 3506 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3507 3508 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3509 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3510 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3511 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3512 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3513 } 3514 3515 private void setWifiApState(int wifiApState) { 3516 final int previousWifiApState = mWifiApState.get(); 3517 3518 try { 3519 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3520 mBatteryStats.noteWifiOn(); 3521 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3522 mBatteryStats.noteWifiOff(); 3523 } 3524 } catch (RemoteException e) { 3525 loge("Failed to note battery stats in wifi"); 3526 } 3527 3528 // Update state 3529 mWifiApState.set(wifiApState); 3530 3531 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3532 3533 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3534 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3535 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3536 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3537 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3538 } 3539 3540 /* 3541 void ageOutScanResults(int age) { 3542 synchronized(mScanResultCache) { 3543 // Trim mScanResults, which prevent WifiStateMachine to return 3544 // obsolete scan results to queriers 3545 long now = System.CurrentTimeMillis(); 3546 for (int i = 0; i < mScanResults.size(); i++) { 3547 ScanResult result = mScanResults.get(i); 3548 if ((result.seen > now || (now - result.seen) > age)) { 3549 mScanResults.remove(i); 3550 } 3551 } 3552 } 3553 }*/ 3554 3555 private static final String IE_STR = "ie="; 3556 private static final String ID_STR = "id="; 3557 private static final String BSSID_STR = "bssid="; 3558 private static final String FREQ_STR = "freq="; 3559 private static final String LEVEL_STR = "level="; 3560 private static final String TSF_STR = "tsf="; 3561 private static final String FLAGS_STR = "flags="; 3562 private static final String SSID_STR = "ssid="; 3563 private static final String DELIMITER_STR = "===="; 3564 private static final String END_STR = "####"; 3565 3566 int emptyScanResultCount = 0; 3567 3568 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3569 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3570 3571 /** 3572 * Format: 3573 * <p/> 3574 * id=1 3575 * bssid=68:7f:76:d7:1a:6e 3576 * freq=2412 3577 * level=-44 3578 * tsf=1344626243700342 3579 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3580 * ssid=zfdy 3581 * ==== 3582 * id=2 3583 * bssid=68:5f:74:d7:1a:6f 3584 * freq=5180 3585 * level=-73 3586 * tsf=1344626243700373 3587 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3588 * ssid=zuby 3589 * ==== 3590 */ 3591 private void setScanResults() { 3592 mNumScanResultsKnown = 0; 3593 mNumScanResultsReturned = 0; 3594 String bssid = ""; 3595 int level = 0; 3596 int freq = 0; 3597 long tsf = 0; 3598 String flags = ""; 3599 WifiSsid wifiSsid = null; 3600 String scanResults; 3601 String tmpResults; 3602 StringBuffer scanResultsBuf = new StringBuffer(); 3603 int sid = 0; 3604 3605 while (true) { 3606 tmpResults = mWifiNative.scanResults(sid); 3607 if (TextUtils.isEmpty(tmpResults)) break; 3608 scanResultsBuf.append(tmpResults); 3609 scanResultsBuf.append("\n"); 3610 String[] lines = tmpResults.split("\n"); 3611 sid = -1; 3612 for (int i = lines.length - 1; i >= 0; i--) { 3613 if (lines[i].startsWith(END_STR)) { 3614 break; 3615 } else if (lines[i].startsWith(ID_STR)) { 3616 try { 3617 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3618 } catch (NumberFormatException e) { 3619 // Nothing to do 3620 } 3621 break; 3622 } 3623 } 3624 if (sid == -1) break; 3625 } 3626 3627 // Age out scan results, we return all scan results found in the last 12 seconds, 3628 // and NOT all scan results since last scan. 3629 // ageOutScanResults(12000); 3630 3631 scanResults = scanResultsBuf.toString(); 3632 if (TextUtils.isEmpty(scanResults)) { 3633 emptyScanResultCount++; 3634 if (emptyScanResultCount > 10) { 3635 // If we got too many empty scan results, the current scan cache is stale, 3636 // hence clear it. 3637 mScanResults = new ArrayList<>(); 3638 } 3639 return; 3640 } 3641 3642 emptyScanResultCount = 0; 3643 3644 // note that all these splits and substrings keep references to the original 3645 // huge string buffer while the amount we really want is generally pretty small 3646 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3647 synchronized (mScanResultCache) { 3648 mScanResults = new ArrayList<>(); 3649 String[] lines = scanResults.split("\n"); 3650 final int bssidStrLen = BSSID_STR.length(); 3651 final int flagLen = FLAGS_STR.length(); 3652 String infoElements = null; 3653 List<String> anqpLines = null; 3654 3655 for (String line : lines) { 3656 if (line.startsWith(BSSID_STR)) { 3657 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3658 } else if (line.startsWith(FREQ_STR)) { 3659 try { 3660 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3661 } catch (NumberFormatException e) { 3662 freq = 0; 3663 } 3664 } else if (line.startsWith(LEVEL_STR)) { 3665 try { 3666 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3667 /* some implementations avoid negative values by adding 256 3668 * so we need to adjust for that here. 3669 */ 3670 if (level > 0) level -= 256; 3671 } catch (NumberFormatException e) { 3672 level = 0; 3673 } 3674 } else if (line.startsWith(TSF_STR)) { 3675 try { 3676 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3677 } catch (NumberFormatException e) { 3678 tsf = 0; 3679 } 3680 } else if (line.startsWith(FLAGS_STR)) { 3681 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3682 } else if (line.startsWith(SSID_STR)) { 3683 wifiSsid = WifiSsid.createFromAsciiEncoded( 3684 line.substring(SSID_STR.length())); 3685 } else if (line.startsWith(IE_STR)) { 3686 infoElements = line; 3687 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3688 if (anqpLines == null) { 3689 anqpLines = new ArrayList<>(); 3690 } 3691 anqpLines.add(line); 3692 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3693 if (bssid != null) { 3694 try { 3695 NetworkDetail networkDetail = 3696 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3697 3698 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3699 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3700 Log.d(Utils.hs2LogTag(getClass()), 3701 String.format("Inconsistent SSID on BSSID '%s':" + 3702 " '%s' vs '%s': %s", 3703 bssid, xssid, networkDetail.getSSID(), infoElements)); 3704 } 3705 3706 if (networkDetail.hasInterworking()) { 3707 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3708 } 3709 3710 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3711 if (scanDetail != null) { 3712 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3713 flags, freq, tsf); 3714 } else { 3715 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3716 flags, level, freq, tsf); 3717 mScanResultCache.put(networkDetail, scanDetail); 3718 } 3719 3720 mNumScanResultsReturned++; // Keep track of how many scan results we got 3721 // as part of this scan's processing 3722 mScanResults.add(scanDetail); 3723 } catch (IllegalArgumentException iae) { 3724 Log.d(TAG, "Failed to parse information elements: " + iae); 3725 } 3726 } 3727 bssid = null; 3728 level = 0; 3729 freq = 0; 3730 tsf = 0; 3731 flags = ""; 3732 wifiSsid = null; 3733 infoElements = null; 3734 anqpLines = null; 3735 } 3736 } 3737 } 3738 3739 boolean attemptAutoJoin = true; 3740 SupplicantState state = mWifiInfo.getSupplicantState(); 3741 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3742 if (getCurrentState() == mRoamingState 3743 || getCurrentState() == mObtainingIpState 3744 || getCurrentState() == mScanModeState 3745 || getCurrentState() == mDisconnectingState 3746 || (getCurrentState() == mConnectedState 3747 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3748 || linkDebouncing 3749 || state == SupplicantState.ASSOCIATING 3750 || state == SupplicantState.AUTHENTICATING 3751 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3752 || state == SupplicantState.GROUP_HANDSHAKE 3753 || (/* keep autojoin enabled if user has manually selected a wifi network, 3754 so as to make sure we reliably remain connected to this network */ 3755 mConnectionRequests == 0 && selection == null)) { 3756 // Dont attempt auto-joining again while we are already attempting to join 3757 // and/or obtaining Ip address 3758 attemptAutoJoin = false; 3759 } 3760 if (DBG) { 3761 if (selection == null) { 3762 selection = "<none>"; 3763 } 3764 loge("wifi setScanResults state" + getCurrentState() 3765 + " sup_state=" + state 3766 + " debouncing=" + linkDebouncing 3767 + " mConnectionRequests=" + mConnectionRequests 3768 + " selection=" + selection); 3769 } 3770 if (attemptAutoJoin) { 3771 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3772 } 3773 // Loose last selected configuration if we have been disconnected for 5 minutes 3774 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3775 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3776 } 3777 3778 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3779 synchronized (mScanResultCache) { 3780 // AutoJoincontroller will directly acces the scan result list and update it with 3781 // ScanResult status 3782 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3783 } 3784 } 3785 if (linkDebouncing) { 3786 // If debouncing, we dont re-select a SSID or BSSID hence 3787 // there is no need to call the network selection code 3788 // in WifiAutoJoinController, instead, 3789 // just try to reconnect to the same SSID by triggering a roam 3790 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3791 } 3792 } 3793 3794 /* 3795 * Fetch RSSI, linkspeed, and frequency on current connection 3796 */ 3797 private void fetchRssiLinkSpeedAndFrequencyNative() { 3798 int newRssi = -1; 3799 int newLinkSpeed = -1; 3800 int newFrequency = -1; 3801 3802 String signalPoll = mWifiNative.signalPoll(); 3803 3804 if (signalPoll != null) { 3805 String[] lines = signalPoll.split("\n"); 3806 for (String line : lines) { 3807 String[] prop = line.split("="); 3808 if (prop.length < 2) continue; 3809 try { 3810 if (prop[0].equals("RSSI")) { 3811 newRssi = Integer.parseInt(prop[1]); 3812 } else if (prop[0].equals("LINKSPEED")) { 3813 newLinkSpeed = Integer.parseInt(prop[1]); 3814 } else if (prop[0].equals("FREQUENCY")) { 3815 newFrequency = Integer.parseInt(prop[1]); 3816 } 3817 } catch (NumberFormatException e) { 3818 //Ignore, defaults on rssi and linkspeed are assigned 3819 } 3820 } 3821 } 3822 3823 if (PDBG) { 3824 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3825 + Integer.toString(newRssi) + " linkspeed=" 3826 + Integer.toString(newLinkSpeed)); 3827 } 3828 3829 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3830 // screen out invalid values 3831 /* some implementations avoid negative values by adding 256 3832 * so we need to adjust for that here. 3833 */ 3834 if (newRssi > 0) newRssi -= 256; 3835 mWifiInfo.setRssi(newRssi); 3836 /* 3837 * Rather then sending the raw RSSI out every time it 3838 * changes, we precalculate the signal level that would 3839 * be displayed in the status bar, and only send the 3840 * broadcast if that much more coarse-grained number 3841 * changes. This cuts down greatly on the number of 3842 * broadcasts, at the cost of not informing others 3843 * interested in RSSI of all the changes in signal 3844 * level. 3845 */ 3846 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3847 if (newSignalLevel != mLastSignalLevel) { 3848 sendRssiChangeBroadcast(newRssi); 3849 } 3850 mLastSignalLevel = newSignalLevel; 3851 } else { 3852 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3853 } 3854 3855 if (newLinkSpeed != -1) { 3856 mWifiInfo.setLinkSpeed(newLinkSpeed); 3857 } 3858 if (newFrequency > 0) { 3859 if (ScanResult.is5GHz(newFrequency)) { 3860 mWifiConnectionStatistics.num5GhzConnected++; 3861 } 3862 if (ScanResult.is24GHz(newFrequency)) { 3863 mWifiConnectionStatistics.num24GhzConnected++; 3864 } 3865 mWifiInfo.setFrequency(newFrequency); 3866 } 3867 mWifiConfigStore.updateConfiguration(mWifiInfo); 3868 } 3869 3870 /** 3871 * Determine if we need to switch network: 3872 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3873 * - match the uregncy of the switch versus the packet usage at the interface 3874 */ 3875 boolean shouldSwitchNetwork(int networkDelta) { 3876 int delta; 3877 if (networkDelta <= 0) { 3878 return false; 3879 } 3880 delta = networkDelta; 3881 if (mWifiInfo != null) { 3882 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3883 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3884 // If AutoJoin while associated is not enabled, 3885 // we should never switch network when already associated 3886 delta = -1000; 3887 } else { 3888 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3889 // TODO: at the interface. We should also discriminate between ucast and mcast, 3890 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3891 // TODO: broadcasts 3892 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3893 delta -= 999; 3894 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3895 delta -= 6; 3896 } 3897 loge("WifiStateMachine shouldSwitchNetwork " 3898 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3899 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3900 + " delta " + networkDelta + " -> " + delta); 3901 } 3902 } else { 3903 loge("WifiStateMachine shouldSwitchNetwork " 3904 + " delta " + networkDelta + " -> " + delta); 3905 } 3906 if (delta > 0) { 3907 return true; 3908 } 3909 return false; 3910 } 3911 3912 // Polling has completed, hence we wont have a score anymore 3913 private void cleanWifiScore() { 3914 mWifiInfo.txBadRate = 0; 3915 mWifiInfo.txSuccessRate = 0; 3916 mWifiInfo.txRetriesRate = 0; 3917 mWifiInfo.rxSuccessRate = 0; 3918 } 3919 3920 int mBadLinkspeedcount = 0; 3921 3922 // For debug, provide information about the last scoring operation 3923 String wifiScoringReport = null; 3924 3925 private void calculateWifiScore(WifiLinkLayerStats stats) { 3926 StringBuilder sb = new StringBuilder(); 3927 3928 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3929 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3930 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3931 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3932 < mWifiConfigStore.badLinkSpeed5); 3933 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3934 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3935 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3936 >= mWifiConfigStore.goodLinkSpeed5); 3937 3938 if (isBadLinkspeed) { 3939 if (mBadLinkspeedcount < 6) 3940 mBadLinkspeedcount++; 3941 } else { 3942 if (mBadLinkspeedcount > 0) 3943 mBadLinkspeedcount--; 3944 } 3945 3946 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3947 if (isGoodLinkspeed) sb.append(" gl"); 3948 3949 /** 3950 * We want to make sure that we use the 24GHz RSSI thresholds if 3951 * there are 2.4GHz scan results 3952 * otherwise we end up lowering the score based on 5GHz values 3953 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3954 * We also might unblacklist the configuation based on 2.4GHz 3955 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3956 */ 3957 boolean use24Thresholds = false; 3958 boolean homeNetworkBoost = false; 3959 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3960 ScanDetailCache scanDetailCache = 3961 mWifiConfigStore.getScanDetailCache(currentConfiguration); 3962 if (currentConfiguration != null && scanDetailCache != null) { 3963 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 3964 if (currentConfiguration.visibility != null) { 3965 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3966 && currentConfiguration.visibility.rssi24 3967 >= (currentConfiguration.visibility.rssi5 - 2)) { 3968 use24Thresholds = true; 3969 } 3970 } 3971 if (scanDetailCache.size() <= 6 3972 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3973 && currentConfiguration.allowedKeyManagement. 3974 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3975 // A PSK network with less than 6 known BSSIDs 3976 // This is most likely a home network and thus we want to stick to wifi more 3977 homeNetworkBoost = true; 3978 } 3979 } 3980 if (homeNetworkBoost) sb.append(" hn"); 3981 if (use24Thresholds) sb.append(" u24"); 3982 3983 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3984 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3985 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3986 3987 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3988 3989 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 3990 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 3991 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 3992 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 3993 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 3994 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 3995 3996 if (isBadRSSI) sb.append(" br"); 3997 if (isLowRSSI) sb.append(" lr"); 3998 if (isHighRSSI) sb.append(" hr"); 3999 4000 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4001 if (currentConfiguration != null && 4002 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4003 if (isBadRSSI) { 4004 currentConfiguration.numTicksAtBadRSSI++; 4005 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4006 // We remained associated for a compound amount of time while passing 4007 // traffic, hence loose the corresponding user triggered disabled stats 4008 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4009 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4010 } 4011 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4012 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4013 } 4014 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4015 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4016 } 4017 currentConfiguration.numTicksAtBadRSSI = 0; 4018 } 4019 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4020 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4021 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4022 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4023 score = score - 5; 4024 penalizedDueToUserTriggeredDisconnect = 1; 4025 sb.append(" p1"); 4026 } 4027 } else if (isLowRSSI) { 4028 currentConfiguration.numTicksAtLowRSSI++; 4029 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4030 // We remained associated for a compound amount of time while passing 4031 // traffic, hence loose the corresponding user triggered disabled stats 4032 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4033 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4034 } 4035 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4036 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4037 } 4038 currentConfiguration.numTicksAtLowRSSI = 0; 4039 } 4040 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4041 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4042 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4043 score = score - 5; 4044 penalizedDueToUserTriggeredDisconnect = 2; 4045 sb.append(" p2"); 4046 } 4047 } else if (!isHighRSSI) { 4048 currentConfiguration.numTicksAtNotHighRSSI++; 4049 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4050 // We remained associated for a compound amount of time while passing 4051 // traffic, hence loose the corresponding user triggered disabled stats 4052 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4053 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4054 } 4055 currentConfiguration.numTicksAtNotHighRSSI = 0; 4056 } 4057 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4058 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4059 score = score - 5; 4060 penalizedDueToUserTriggeredDisconnect = 3; 4061 sb.append(" p3"); 4062 } 4063 } 4064 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4065 currentConfiguration.numTicksAtLowRSSI, 4066 currentConfiguration.numTicksAtNotHighRSSI)); 4067 } 4068 4069 if (PDBG) { 4070 String rssiStatus = ""; 4071 if (isBadRSSI) rssiStatus += " badRSSI "; 4072 else if (isHighRSSI) rssiStatus += " highRSSI "; 4073 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4074 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4075 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4076 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4077 + " score=" + Integer.toString(mWifiInfo.score) 4078 + rssiStatus 4079 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4080 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4081 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4082 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4083 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4084 } 4085 4086 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4087 && (isBadRSSI || isLowRSSI)) { 4088 // Link is stuck 4089 if (mWifiInfo.linkStuckCount < 5) 4090 mWifiInfo.linkStuckCount += 1; 4091 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4092 if (PDBG) loge(" bad link -> stuck count =" 4093 + Integer.toString(mWifiInfo.linkStuckCount)); 4094 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 4095 if (mWifiInfo.linkStuckCount > 0) 4096 mWifiInfo.linkStuckCount -= 1; 4097 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4098 if (PDBG) loge(" good link -> stuck count =" 4099 + Integer.toString(mWifiInfo.linkStuckCount)); 4100 } 4101 4102 sb.append(String.format(" [%d", score)); 4103 4104 if (mWifiInfo.linkStuckCount > 1) { 4105 // Once link gets stuck for more than 3 seconds, start reducing the score 4106 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4107 } 4108 sb.append(String.format(",%d", score)); 4109 4110 if (isBadLinkspeed) { 4111 score -= 4; 4112 if (PDBG) { 4113 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4114 + " score=" + Integer.toString(score)); 4115 } 4116 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4117 score += 4; // So as bad rssi alone dont kill us 4118 } 4119 sb.append(String.format(",%d", score)); 4120 4121 if (isBadRSSI) { 4122 if (mWifiInfo.badRssiCount < 7) 4123 mWifiInfo.badRssiCount += 1; 4124 } else if (isLowRSSI) { 4125 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4126 if (mWifiInfo.badRssiCount > 0) { 4127 // Decrement bad Rssi count 4128 mWifiInfo.badRssiCount -= 1; 4129 } 4130 } else { 4131 mWifiInfo.badRssiCount = 0; 4132 mWifiInfo.lowRssiCount = 0; 4133 } 4134 4135 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4136 sb.append(String.format(",%d", score)); 4137 4138 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4139 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4140 + " --> score " + Integer.toString(score)); 4141 4142 4143 if (isHighRSSI) { 4144 score += 5; 4145 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 4146 } 4147 sb.append(String.format(",%d]", score)); 4148 4149 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4150 4151 //sanitize boundaries 4152 if (score > NetworkAgent.WIFI_BASE_SCORE) 4153 score = NetworkAgent.WIFI_BASE_SCORE; 4154 if (score < 0) 4155 score = 0; 4156 4157 //report score 4158 if (score != mWifiInfo.score) { 4159 if (DBG) { 4160 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4161 } 4162 mWifiInfo.score = score; 4163 if (mNetworkAgent != null) { 4164 mNetworkAgent.sendNetworkScore(score); 4165 } 4166 } 4167 wifiScoringReport = sb.toString(); 4168 } 4169 4170 public double getTxPacketRate() { 4171 if (mWifiInfo != null) { 4172 return mWifiInfo.txSuccessRate; 4173 } 4174 return -1; 4175 } 4176 4177 public double getRxPacketRate() { 4178 if (mWifiInfo != null) { 4179 return mWifiInfo.rxSuccessRate; 4180 } 4181 return -1; 4182 } 4183 4184 /** 4185 * Fetch TX packet counters on current connection 4186 */ 4187 private void fetchPktcntNative(RssiPacketCountInfo info) { 4188 String pktcntPoll = mWifiNative.pktcntPoll(); 4189 4190 if (pktcntPoll != null) { 4191 String[] lines = pktcntPoll.split("\n"); 4192 for (String line : lines) { 4193 String[] prop = line.split("="); 4194 if (prop.length < 2) continue; 4195 try { 4196 if (prop[0].equals("TXGOOD")) { 4197 info.txgood = Integer.parseInt(prop[1]); 4198 } else if (prop[0].equals("TXBAD")) { 4199 info.txbad = Integer.parseInt(prop[1]); 4200 } 4201 } catch (NumberFormatException e) { 4202 // Ignore 4203 } 4204 } 4205 } 4206 } 4207 4208 private boolean clearIPv4Address(String iface) { 4209 try { 4210 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4211 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4212 mNwService.setInterfaceConfig(iface, ifcg); 4213 return true; 4214 } catch (RemoteException e) { 4215 return false; 4216 } 4217 } 4218 4219 private boolean isProvisioned(LinkProperties lp) { 4220 return lp.isProvisioned() || 4221 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4222 } 4223 4224 /** 4225 * Creates a new LinkProperties object by merging information from various sources. 4226 * <p/> 4227 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4228 * netlink, static configuration, ...). When one of these sources of information has updated 4229 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4230 * information that came from other sources. Instead, when one of those sources has new 4231 * information, we update the object that tracks the information from that source and then 4232 * call this method to integrate the change into a new LinkProperties object for subsequent 4233 * comparison with mLinkProperties. 4234 * <p/> 4235 * The information used to build LinkProperties is currently obtained as follows: 4236 * - Interface name: set in the constructor. 4237 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4238 * - IPv4 routes, DNS servers, and domains: DHCP. 4239 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4240 * - HTTP proxy: the wifi config store. 4241 */ 4242 private LinkProperties makeLinkProperties() { 4243 LinkProperties newLp = new LinkProperties(); 4244 4245 // Interface name, proxy, and TCP buffer sizes are locally configured. 4246 newLp.setInterfaceName(mInterfaceName); 4247 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4248 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4249 newLp.setTcpBufferSizes(mTcpBufferSizes); 4250 } 4251 4252 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4253 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4254 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4255 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4256 newLp.addRoute(route); 4257 } 4258 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4259 newLp.addDnsServer(dns); 4260 } 4261 4262 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4263 synchronized (mDhcpResultsLock) { 4264 // Even when we're using static configuration, we don't need to look at the config 4265 // store, because static IP configuration also populates mDhcpResults. 4266 if ((mDhcpResults != null)) { 4267 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4268 newLp.addRoute(route); 4269 } 4270 for (InetAddress dns : mDhcpResults.dnsServers) { 4271 newLp.addDnsServer(dns); 4272 } 4273 newLp.setDomains(mDhcpResults.domains); 4274 } 4275 } 4276 4277 return newLp; 4278 } 4279 4280 private void updateLinkProperties(int reason) { 4281 LinkProperties newLp = makeLinkProperties(); 4282 4283 final boolean linkChanged = !newLp.equals(mLinkProperties); 4284 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4285 final boolean isProvisioned = isProvisioned(newLp); 4286 final boolean lostIPv4Provisioning = 4287 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4288 final DetailedState detailedState = getNetworkDetailedState(); 4289 4290 if (linkChanged) { 4291 if (DBG) { 4292 log("Link configuration changed for netId: " + mLastNetworkId 4293 + " old: " + mLinkProperties + " new: " + newLp); 4294 } 4295 mLinkProperties = newLp; 4296 if (mIpReachabilityMonitor != null) { 4297 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4298 } 4299 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4300 } 4301 4302 if (DBG) { 4303 StringBuilder sb = new StringBuilder(); 4304 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4305 sb.append(" state: " + detailedState); 4306 sb.append(" reason: " + smToString(reason)); 4307 4308 if (mLinkProperties != null) { 4309 if (mLinkProperties.hasIPv4Address()) { 4310 sb.append(" v4"); 4311 } 4312 if (mLinkProperties.hasGlobalIPv6Address()) { 4313 sb.append(" v6"); 4314 } 4315 if (mLinkProperties.hasIPv4DefaultRoute()) { 4316 sb.append(" v4r"); 4317 } 4318 if (mLinkProperties.hasIPv6DefaultRoute()) { 4319 sb.append(" v6r"); 4320 } 4321 if (mLinkProperties.hasIPv4DnsServer()) { 4322 sb.append(" v4dns"); 4323 } 4324 if (mLinkProperties.hasIPv6DnsServer()) { 4325 sb.append(" v6dns"); 4326 } 4327 if (isProvisioned) { 4328 sb.append(" isprov"); 4329 } 4330 } 4331 loge(sb.toString()); 4332 } 4333 4334 // If we just configured or lost IP configuration, do the needful. 4335 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4336 // here because those should only be called if we're attempting to connect or already 4337 // connected, whereas updateLinkProperties can be called at any time. 4338 switch (reason) { 4339 case DhcpStateMachine.DHCP_SUCCESS: 4340 case CMD_STATIC_IP_SUCCESS: 4341 // IPv4 provisioning succeded. Advance to connected state. 4342 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4343 if (!isProvisioned) { 4344 // Can never happen unless DHCP reports success but isProvisioned thinks the 4345 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4346 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4347 // TODO: disconnect here instead. If our configuration is not usable, there's no 4348 // point in staying connected, and if mLinkProperties is out of sync with 4349 // reality, that will cause problems in the future. 4350 loge("IPv4 config succeeded, but not provisioned"); 4351 } 4352 break; 4353 4354 case DhcpStateMachine.DHCP_FAILURE: 4355 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4356 // give up and disconnect. 4357 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4358 if (!isProvisioned || lostIPv4Provisioning) { 4359 sendMessage(CMD_IP_CONFIGURATION_LOST); 4360 } else { 4361 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4362 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4363 4364 // To be sure we don't get stuck with a non-working network if all we had is 4365 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4366 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4367 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4368 // necessary for provisioning, its deletion will cause us to disconnect. 4369 // 4370 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4371 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4372 // not return true if we're using DHCP and don't have an IPv4 default route. So 4373 // for now it's only here for extra redundancy. However, it will increase 4374 // robustness if we move to getting IPv4 routes from netlink as well. 4375 loge("DHCP failure: provisioned, clearing IPv4 address."); 4376 if (!clearIPv4Address(mInterfaceName)) { 4377 sendMessage(CMD_IP_CONFIGURATION_LOST); 4378 } 4379 } 4380 break; 4381 4382 case CMD_STATIC_IP_FAILURE: 4383 // Static configuration was invalid, or an error occurred in applying it. Give up. 4384 sendMessage(CMD_IP_CONFIGURATION_LOST); 4385 break; 4386 4387 case CMD_UPDATE_LINKPROPERTIES: 4388 // IP addresses, DNS servers, etc. changed. Act accordingly. 4389 if (wasProvisioned && !isProvisioned) { 4390 // We no longer have a usable network configuration. Disconnect. 4391 sendMessage(CMD_IP_CONFIGURATION_LOST); 4392 } else if (!wasProvisioned && isProvisioned) { 4393 // We have a usable IPv6-only config. Advance to connected state. 4394 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4395 } 4396 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4397 // If anything has changed and we're already connected, send out a notification. 4398 sendLinkConfigurationChangedBroadcast(); 4399 } 4400 break; 4401 } 4402 } 4403 4404 /** 4405 * Clears all our link properties. 4406 */ 4407 private void clearLinkProperties() { 4408 // Clear the link properties obtained from DHCP and netlink. 4409 synchronized (mDhcpResultsLock) { 4410 if (mDhcpResults != null) { 4411 mDhcpResults.clear(); 4412 } 4413 } 4414 mNetlinkTracker.clearLinkProperties(); 4415 if (mIpReachabilityMonitor != null) { 4416 mIpReachabilityMonitor.clearLinkProperties(); 4417 } 4418 4419 // Now clear the merged link properties. 4420 mLinkProperties.clear(); 4421 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4422 } 4423 4424 /** 4425 * try to update default route MAC address. 4426 */ 4427 private String updateDefaultRouteMacAddress(int timeout) { 4428 String address = null; 4429 for (RouteInfo route : mLinkProperties.getRoutes()) { 4430 if (route.isDefaultRoute() && route.hasGateway()) { 4431 InetAddress gateway = route.getGateway(); 4432 if (gateway instanceof Inet4Address) { 4433 if (PDBG) { 4434 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4435 + gateway.getHostAddress()); 4436 } 4437 address = macAddressFromRoute(gateway.getHostAddress()); 4438 /* The gateway's MAC address is known */ 4439 if ((address == null) && (timeout > 0)) { 4440 boolean reachable = false; 4441 try { 4442 reachable = gateway.isReachable(timeout); 4443 } catch (Exception e) { 4444 loge("updateDefaultRouteMacAddress exception reaching :" 4445 + gateway.getHostAddress()); 4446 4447 } finally { 4448 if (reachable == true) { 4449 4450 address = macAddressFromRoute(gateway.getHostAddress()); 4451 if (PDBG) { 4452 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4453 + gateway.getHostAddress() + " found " + address); 4454 } 4455 } 4456 } 4457 } 4458 if (address != null) { 4459 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4460 } 4461 } 4462 } 4463 } 4464 return address; 4465 } 4466 4467 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4468 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4469 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4470 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4471 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4472 } 4473 4474 private void sendRssiChangeBroadcast(final int newRssi) { 4475 try { 4476 mBatteryStats.noteWifiRssiChanged(newRssi); 4477 } catch (RemoteException e) { 4478 // Won't happen. 4479 } 4480 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4481 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4482 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4483 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4484 } 4485 4486 private void sendNetworkStateChangeBroadcast(String bssid) { 4487 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4488 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4489 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4490 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4491 if (bssid != null) 4492 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4493 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4494 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4495 // We no longer report MAC address to third-parties and our code does 4496 // not rely on this broadcast, so just send the default MAC address. 4497 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4498 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4499 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4500 } 4501 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4502 } 4503 4504 private WifiInfo getWiFiInfoForUid(int uid) { 4505 if (Binder.getCallingUid() == Process.myUid()) { 4506 return mWifiInfo; 4507 } 4508 4509 WifiInfo result = new WifiInfo(mWifiInfo); 4510 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4511 4512 IBinder binder = ServiceManager.getService("package"); 4513 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4514 4515 try { 4516 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4517 uid) == PackageManager.PERMISSION_GRANTED) { 4518 result.setMacAddress(mWifiInfo.getMacAddress()); 4519 } 4520 } catch (RemoteException e) { 4521 Log.e(TAG, "Error checking receiver permission", e); 4522 } 4523 4524 return result; 4525 } 4526 4527 private void sendLinkConfigurationChangedBroadcast() { 4528 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4529 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4530 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4531 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4532 } 4533 4534 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4535 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4536 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4537 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4538 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4539 } 4540 4541 /** 4542 * Record the detailed state of a network. 4543 * 4544 * @param state the new {@code DetailedState} 4545 */ 4546 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4547 boolean hidden = false; 4548 4549 if (linkDebouncing || isRoaming()) { 4550 // There is generally a confusion in the system about colluding 4551 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4552 // which leads to multiple confusion. 4553 // 4554 // If link is de-bouncing or roaming, we already have an IP address 4555 // as well we were connected and are doing L2 cycles of 4556 // reconnecting or renewing IP address to check that we still have it 4557 // This L2 link flapping should ne be reflected into the Network state 4558 // which is the state of the WiFi Network visible to Layer 3 and applications 4559 // Note that once debouncing and roaming are completed, we will 4560 // set the Network state to where it should be, or leave it as unchanged 4561 // 4562 hidden = true; 4563 } 4564 if (DBG) { 4565 log("setDetailed state, old =" 4566 + mNetworkInfo.getDetailedState() + " and new state=" + state 4567 + " hidden=" + hidden); 4568 } 4569 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4570 // Always indicate that SSID has changed 4571 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4572 if (DBG) { 4573 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4574 } 4575 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4576 sendNetworkStateChangeBroadcast(null); 4577 } 4578 } 4579 if (hidden == true) { 4580 return false; 4581 } 4582 4583 if (state != mNetworkInfo.getDetailedState()) { 4584 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4585 if (mNetworkAgent != null) { 4586 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4587 } 4588 sendNetworkStateChangeBroadcast(null); 4589 return true; 4590 } 4591 return false; 4592 } 4593 4594 private DetailedState getNetworkDetailedState() { 4595 return mNetworkInfo.getDetailedState(); 4596 } 4597 4598 private SupplicantState handleSupplicantStateChange(Message message) { 4599 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4600 SupplicantState state = stateChangeResult.state; 4601 // Supplicant state change 4602 // [31-13] Reserved for future use 4603 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4604 // 50023 supplicant_state_changed (custom|1|5) 4605 mWifiInfo.setSupplicantState(state); 4606 // Network id is only valid when we start connecting 4607 if (SupplicantState.isConnecting(state)) { 4608 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4609 } else { 4610 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4611 } 4612 4613 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4614 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4615 4616 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4617 4618 return state; 4619 } 4620 4621 /** 4622 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4623 * using the interface, stopping DHCP & disabling interface 4624 */ 4625 private void handleNetworkDisconnect() { 4626 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4627 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4628 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4629 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4630 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4631 4632 4633 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4634 4635 stopDhcp(); 4636 4637 try { 4638 mNwService.clearInterfaceAddresses(mInterfaceName); 4639 mNwService.disableIpv6(mInterfaceName); 4640 } catch (Exception e) { 4641 loge("Failed to clear addresses or disable ipv6" + e); 4642 } 4643 4644 /* Reset data structures */ 4645 mBadLinkspeedcount = 0; 4646 mWifiInfo.reset(); 4647 linkDebouncing = false; 4648 /* Reset roaming parameters */ 4649 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4650 4651 /** 4652 * fullBandConnectedTimeIntervalMilli: 4653 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4654 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4655 * Initialize to sane value = 20 seconds 4656 */ 4657 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4658 4659 setNetworkDetailedState(DetailedState.DISCONNECTED); 4660 if (mNetworkAgent != null) { 4661 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4662 mNetworkAgent = null; 4663 } 4664 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4665 4666 /* Clear network properties */ 4667 clearLinkProperties(); 4668 4669 /* Cend event to CM & network change broadcast */ 4670 sendNetworkStateChangeBroadcast(mLastBssid); 4671 4672 /* Cancel auto roam requests */ 4673 autoRoamSetBSSID(mLastNetworkId, "any"); 4674 4675 mLastBssid = null; 4676 registerDisconnected(); 4677 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4678 } 4679 4680 private void handleSupplicantConnectionLoss() { 4681 /* Socket connection can be lost when we do a graceful shutdown 4682 * or when the driver is hung. Ensure supplicant is stopped here. 4683 */ 4684 mWifiMonitor.killSupplicant(mP2pSupported); 4685 mWifiNative.closeSupplicantConnection(); 4686 sendSupplicantConnectionChangedBroadcast(false); 4687 setWifiState(WIFI_STATE_DISABLED); 4688 } 4689 4690 void handlePreDhcpSetup() { 4691 mDhcpActive = true; 4692 if (!mBluetoothConnectionActive) { 4693 /* 4694 * There are problems setting the Wi-Fi driver's power 4695 * mode to active when bluetooth coexistence mode is 4696 * enabled or sense. 4697 * <p> 4698 * We set Wi-Fi to active mode when 4699 * obtaining an IP address because we've found 4700 * compatibility issues with some routers with low power 4701 * mode. 4702 * <p> 4703 * In order for this active power mode to properly be set, 4704 * we disable coexistence mode until we're done with 4705 * obtaining an IP address. One exception is if we 4706 * are currently connected to a headset, since disabling 4707 * coexistence would interrupt that connection. 4708 */ 4709 // Disable the coexistence mode 4710 mWifiNative.setBluetoothCoexistenceMode( 4711 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4712 } 4713 4714 // Disable power save and suspend optimizations during DHCP 4715 // Note: The order here is important for now. Brcm driver changes 4716 // power settings when we control suspend mode optimizations. 4717 // TODO: Remove this comment when the driver is fixed. 4718 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4719 mWifiNative.setPowerSave(false); 4720 4721 // Update link layer stats 4722 getWifiLinkLayerStats(false); 4723 4724 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4725 Message msg = new Message(); 4726 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4727 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4728 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4729 msg.obj = mDhcpStateMachine; 4730 mWifiP2pChannel.sendMessage(msg); 4731 } 4732 4733 4734 private boolean useLegacyDhcpClient() { 4735 return Settings.Global.getInt( 4736 mContext.getContentResolver(), 4737 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4738 } 4739 4740 private void maybeInitDhcpStateMachine() { 4741 if (mDhcpStateMachine == null) { 4742 if (useLegacyDhcpClient()) { 4743 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4744 mContext, WifiStateMachine.this, mInterfaceName); 4745 } else { 4746 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4747 mContext, WifiStateMachine.this, mInterfaceName); 4748 } 4749 } 4750 } 4751 4752 void startDhcp() { 4753 maybeInitDhcpStateMachine(); 4754 mDhcpStateMachine.registerForPreDhcpNotification(); 4755 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4756 } 4757 4758 void renewDhcp() { 4759 maybeInitDhcpStateMachine(); 4760 mDhcpStateMachine.registerForPreDhcpNotification(); 4761 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4762 } 4763 4764 void stopDhcp() { 4765 if (mDhcpStateMachine != null) { 4766 /* In case we were in middle of DHCP operation restore back powermode */ 4767 handlePostDhcpSetup(); 4768 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4769 } 4770 } 4771 4772 void handlePostDhcpSetup() { 4773 /* Restore power save and suspend optimizations */ 4774 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4775 mWifiNative.setPowerSave(true); 4776 4777 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4778 4779 // Set the coexistence mode back to its default value 4780 mWifiNative.setBluetoothCoexistenceMode( 4781 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4782 4783 mDhcpActive = false; 4784 } 4785 4786 void connectScanningService() { 4787 4788 if (mWifiScanner == null) { 4789 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4790 } 4791 } 4792 4793 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4794 4795 if (PDBG) { 4796 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4797 loge("link address " + dhcpResults.ipAddress); 4798 } 4799 4800 synchronized (mDhcpResultsLock) { 4801 mDhcpResults = dhcpResults; 4802 } 4803 4804 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4805 if (isRoaming()) { 4806 if (addr instanceof Inet4Address) { 4807 int previousAddress = mWifiInfo.getIpAddress(); 4808 int newAddress = NetworkUtils.inetAddressToInt(addr); 4809 if (previousAddress != newAddress) { 4810 loge("handleIPv4Success, roaming and address changed" + 4811 mWifiInfo + " got: " + addr); 4812 } else { 4813 4814 } 4815 } else { 4816 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4817 addr.toString()); 4818 } 4819 } 4820 mWifiInfo.setInetAddress(addr); 4821 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4822 updateLinkProperties(reason); 4823 } 4824 4825 private void handleSuccessfulIpConfiguration() { 4826 mLastSignalLevel = -1; // Force update of signal strength 4827 WifiConfiguration c = getCurrentWifiConfiguration(); 4828 if (c != null) { 4829 // Reset IP failure tracking 4830 c.numConnectionFailures = 0; 4831 4832 // Tell the framework whether the newly connected network is trusted or untrusted. 4833 updateCapabilities(c); 4834 } 4835 if (c != null) { 4836 ScanResult result = getCurrentScanResult(); 4837 if (result == null) { 4838 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4839 c.configKey()); 4840 } else { 4841 // Clear the per BSSID failure count 4842 result.numIpConfigFailures = 0; 4843 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4844 // any BSSID, even though it may already have a non zero ip failure count, 4845 // this will typically happen if the user walks away and come back to his arrea 4846 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4847 // in supplicant for a couple of hours or a day 4848 mWifiNative.clearBlacklist(); 4849 } 4850 } 4851 } 4852 4853 private void handleIPv4Failure(int reason) { 4854 synchronized(mDhcpResultsLock) { 4855 if (mDhcpResults != null) { 4856 mDhcpResults.clear(); 4857 } 4858 } 4859 if (PDBG) { 4860 loge("wifistatemachine handleIPv4Failure"); 4861 } 4862 updateLinkProperties(reason); 4863 } 4864 4865 private void handleIpConfigurationLost() { 4866 mWifiInfo.setInetAddress(null); 4867 mWifiInfo.setMeteredHint(false); 4868 4869 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4870 "DHCP FAILURE", mWifiInfo.getBSSID()); 4871 4872 /* DHCP times out after about 30 seconds, we do a 4873 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4874 */ 4875 mWifiNative.disconnect(); 4876 } 4877 4878 // TODO: De-duplicated this and handleIpConfigurationLost(). 4879 private void handleIpReachabilityLost() { 4880 // No need to be told about any additional neighbors that might also 4881 // become unreachable--quiet them now while we start disconnecting. 4882 if (mIpReachabilityMonitor != null) { 4883 mIpReachabilityMonitor.clearLinkProperties(); 4884 } 4885 4886 mWifiInfo.setInetAddress(null); 4887 mWifiInfo.setMeteredHint(false); 4888 4889 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 4890 4891 // Disconnect via supplicant, and let autojoin retry connecting to the network. 4892 mWifiNative.disconnect(); 4893 } 4894 4895 private int convertFrequencyToChannelNumber(int frequency) { 4896 if (frequency >= 2412 && frequency <= 2484) { 4897 return (frequency -2412) / 5 + 1; 4898 } else if (frequency >= 5170 && frequency <=5825) { 4899 //DFS is included 4900 return (frequency -5170) / 5 + 34; 4901 } else { 4902 return 0; 4903 } 4904 } 4905 4906 private int chooseApChannel(int apBand) { 4907 int apChannel; 4908 int[] channel; 4909 4910 if (apBand == 0) { 4911 //for 2.4GHz, we only set the AP at channel 1,6,11 4912 apChannel = 5 * mRandom.nextInt(3) + 1; 4913 } else { 4914 //5G without DFS 4915 channel = mWifiNative.getChannelsForBand(2); 4916 if (channel != null && channel.length > 0) { 4917 apChannel = channel[mRandom.nextInt(channel.length)]; 4918 apChannel = convertFrequencyToChannelNumber(apChannel); 4919 } else { 4920 Log.e(TAG, "SoftAp do not get available channel list"); 4921 apChannel = 0; 4922 } 4923 } 4924 4925 if(DBG) { 4926 Log.d(TAG, "SoftAp set on channel " + apChannel); 4927 } 4928 4929 return apChannel; 4930 } 4931 4932 4933 /* Current design is to not set the config on a running hostapd but instead 4934 * stop and start tethering when user changes config on a running access point 4935 * 4936 * TODO: Add control channel setup through hostapd that allows changing config 4937 * on a running daemon 4938 */ 4939 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4940 // set channel 4941 final WifiConfiguration config = new WifiConfiguration(configuration); 4942 4943 if (DBG) { 4944 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4945 } 4946 //set country code through HAL Here 4947 if (mSetCountryCode != null) { 4948 if(!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 4949 if (config.apBand != 0) { 4950 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 4951 //countrycode is mandatory for 5GHz 4952 sendMessage(CMD_START_AP_FAILURE); 4953 return; 4954 } 4955 } 4956 } else { 4957 if (config.apBand != 0) { 4958 //countrycode is mandatory for 5GHz 4959 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 4960 sendMessage(CMD_START_AP_FAILURE); 4961 return; 4962 } 4963 } 4964 4965 if (config.apChannel == 0) { 4966 config.apChannel = chooseApChannel(config.apBand); 4967 if (config.apChannel == 0) { 4968 //fail to get available channel 4969 sendMessage(CMD_START_AP_FAILURE); 4970 return; 4971 } 4972 } 4973 //turn off interface 4974 if (!mWifiNative.toggleInterface(0)) { 4975 sendMessage(CMD_START_AP_FAILURE); 4976 return; 4977 } 4978 // Start hostapd on a separate thread 4979 new Thread(new Runnable() { 4980 public void run() { 4981 try { 4982 mNwService.startAccessPoint(config, mInterfaceName); 4983 } catch (Exception e) { 4984 loge("Exception in softap start " + e); 4985 try { 4986 mNwService.stopAccessPoint(mInterfaceName); 4987 mNwService.startAccessPoint(config, mInterfaceName); 4988 } catch (Exception e1) { 4989 loge("Exception in softap re-start " + e1); 4990 sendMessage(CMD_START_AP_FAILURE); 4991 return; 4992 } 4993 } 4994 if (DBG) log("Soft AP start successful"); 4995 sendMessage(CMD_START_AP_SUCCESS); 4996 } 4997 }).start(); 4998 } 4999 5000 /* 5001 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5002 * so as to record MAC address of default gateway. 5003 **/ 5004 private String macAddressFromRoute(String ipAddress) { 5005 String macAddress = null; 5006 BufferedReader reader = null; 5007 try { 5008 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5009 5010 // Skip over the line bearing colum titles 5011 String line = reader.readLine(); 5012 5013 while ((line = reader.readLine()) != null) { 5014 String[] tokens = line.split("[ ]+"); 5015 if (tokens.length < 6) { 5016 continue; 5017 } 5018 5019 // ARP column format is 5020 // Address HWType HWAddress Flags Mask IFace 5021 String ip = tokens[0]; 5022 String mac = tokens[3]; 5023 5024 if (ipAddress.equals(ip)) { 5025 macAddress = mac; 5026 break; 5027 } 5028 } 5029 5030 if (macAddress == null) { 5031 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5032 "/proc/net/arp"); 5033 } 5034 5035 } catch (FileNotFoundException e) { 5036 loge("Could not open /proc/net/arp to lookup mac address"); 5037 } catch (IOException e) { 5038 loge("Could not read /proc/net/arp to lookup mac address"); 5039 } finally { 5040 try { 5041 if (reader != null) { 5042 reader.close(); 5043 } 5044 } catch (IOException e) { 5045 // Do nothing 5046 } 5047 } 5048 return macAddress; 5049 5050 } 5051 5052 private class WifiNetworkFactory extends NetworkFactory { 5053 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5054 super(l, c, TAG, f); 5055 } 5056 5057 @Override 5058 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5059 ++mConnectionRequests; 5060 } 5061 5062 @Override 5063 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5064 --mConnectionRequests; 5065 } 5066 5067 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5068 pw.println("mConnectionRequests " + mConnectionRequests); 5069 } 5070 5071 } 5072 5073 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5074 private int mUntrustedReqCount; 5075 5076 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5077 super(l, c, tag, f); 5078 } 5079 5080 @Override 5081 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5082 if (!networkRequest.networkCapabilities.hasCapability( 5083 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5084 if (++mUntrustedReqCount == 1) { 5085 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5086 } 5087 } 5088 } 5089 5090 @Override 5091 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5092 if (!networkRequest.networkCapabilities.hasCapability( 5093 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5094 if (--mUntrustedReqCount == 0) { 5095 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5096 } 5097 } 5098 } 5099 5100 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5101 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5102 } 5103 } 5104 5105 void maybeRegisterNetworkFactory() { 5106 if (mNetworkFactory == null) { 5107 checkAndSetConnectivityInstance(); 5108 if (mCm != null) { 5109 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5110 NETWORKTYPE, mNetworkCapabilitiesFilter); 5111 mNetworkFactory.setScoreFilter(60); 5112 mNetworkFactory.register(); 5113 5114 // We can't filter untrusted network in the capabilities filter because a trusted 5115 // network would still satisfy a request that accepts untrusted ones. 5116 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5117 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5118 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5119 mUntrustedNetworkFactory.register(); 5120 } 5121 } 5122 } 5123 5124 /******************************************************** 5125 * HSM states 5126 *******************************************************/ 5127 5128 class DefaultState extends State { 5129 @Override 5130 public boolean processMessage(Message message) { 5131 logStateAndMessage(message, getClass().getSimpleName()); 5132 5133 switch (message.what) { 5134 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5135 AsyncChannel ac = (AsyncChannel) message.obj; 5136 if (ac == mWifiP2pChannel) { 5137 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5138 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5139 } else { 5140 loge("WifiP2pService connection failure, error=" + message.arg1); 5141 } 5142 } else { 5143 loge("got HALF_CONNECTED for unknown channel"); 5144 } 5145 break; 5146 } 5147 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5148 AsyncChannel ac = (AsyncChannel) message.obj; 5149 if (ac == mWifiP2pChannel) { 5150 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5151 //TODO: Re-establish connection to state machine after a delay 5152 // mWifiP2pChannel.connect(mContext, getHandler(), 5153 // mWifiP2pManager.getMessenger()); 5154 } 5155 break; 5156 } 5157 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5158 mBluetoothConnectionActive = (message.arg1 != 5159 BluetoothAdapter.STATE_DISCONNECTED); 5160 break; 5161 /* Synchronous call returns */ 5162 case CMD_PING_SUPPLICANT: 5163 case CMD_ENABLE_NETWORK: 5164 case CMD_ADD_OR_UPDATE_NETWORK: 5165 case CMD_REMOVE_NETWORK: 5166 case CMD_SAVE_CONFIG: 5167 replyToMessage(message, message.what, FAILURE); 5168 break; 5169 case CMD_GET_CAPABILITY_FREQ: 5170 replyToMessage(message, message.what, null); 5171 break; 5172 case CMD_GET_CONFIGURED_NETWORKS: 5173 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5174 break; 5175 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5176 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5177 break; 5178 case CMD_ENABLE_RSSI_POLL: 5179 mEnableRssiPolling = (message.arg1 == 1); 5180 break; 5181 case CMD_SET_HIGH_PERF_MODE: 5182 if (message.arg1 == 1) { 5183 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5184 } else { 5185 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5186 } 5187 break; 5188 case CMD_BOOT_COMPLETED: 5189 maybeRegisterNetworkFactory(); 5190 break; 5191 case CMD_SCREEN_STATE_CHANGED: 5192 handleScreenStateChanged(message.arg1 != 0); 5193 break; 5194 /* Discard */ 5195 case CMD_START_SCAN: 5196 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5197 break; 5198 case CMD_START_SUPPLICANT: 5199 case CMD_STOP_SUPPLICANT: 5200 case CMD_STOP_SUPPLICANT_FAILED: 5201 case CMD_START_DRIVER: 5202 case CMD_STOP_DRIVER: 5203 case CMD_DELAYED_STOP_DRIVER: 5204 case CMD_DRIVER_START_TIMED_OUT: 5205 case CMD_START_AP: 5206 case CMD_START_AP_SUCCESS: 5207 case CMD_START_AP_FAILURE: 5208 case CMD_STOP_AP: 5209 case CMD_TETHER_STATE_CHANGE: 5210 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5211 case CMD_DISCONNECT: 5212 case CMD_RECONNECT: 5213 case CMD_REASSOCIATE: 5214 case CMD_RELOAD_TLS_AND_RECONNECT: 5215 case WifiMonitor.SUP_CONNECTION_EVENT: 5216 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5217 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5218 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5219 case WifiMonitor.SCAN_RESULTS_EVENT: 5220 case WifiMonitor.SCAN_FAILED_EVENT: 5221 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5222 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5223 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5224 case WifiMonitor.WPS_OVERLAP_EVENT: 5225 case CMD_BLACKLIST_NETWORK: 5226 case CMD_CLEAR_BLACKLIST: 5227 case CMD_SET_OPERATIONAL_MODE: 5228 case CMD_SET_COUNTRY_CODE: 5229 case CMD_SET_FREQUENCY_BAND: 5230 case CMD_RSSI_POLL: 5231 case CMD_ENABLE_ALL_NETWORKS: 5232 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5233 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5234 /* Handled by WifiApConfigStore */ 5235 case CMD_SET_AP_CONFIG: 5236 case CMD_SET_AP_CONFIG_COMPLETED: 5237 case CMD_REQUEST_AP_CONFIG: 5238 case CMD_RESPONSE_AP_CONFIG: 5239 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5240 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5241 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5242 case CMD_DISABLE_P2P_RSP: 5243 case WifiMonitor.SUP_REQUEST_IDENTITY: 5244 case CMD_TEST_NETWORK_DISCONNECT: 5245 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5246 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5247 case CMD_TARGET_BSSID: 5248 case CMD_AUTO_CONNECT: 5249 case CMD_AUTO_ROAM: 5250 case CMD_AUTO_SAVE_NETWORK: 5251 case CMD_ASSOCIATED_BSSID: 5252 case CMD_UNWANTED_NETWORK: 5253 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5254 case CMD_ROAM_WATCHDOG_TIMER: 5255 case CMD_DISABLE_EPHEMERAL_NETWORK: 5256 case CMD_GET_MATCHING_CONFIG: 5257 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5258 case CMD_STARTED_PNO_DBG: 5259 case CMD_STARTED_GSCAN_DBG: 5260 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5261 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5262 break; 5263 case DhcpStateMachine.CMD_ON_QUIT: 5264 mDhcpStateMachine = null; 5265 break; 5266 case CMD_SET_SUSPEND_OPT_ENABLED: 5267 if (message.arg1 == 1) { 5268 mSuspendWakeLock.release(); 5269 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5270 } else { 5271 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5272 } 5273 break; 5274 case WifiMonitor.DRIVER_HUNG_EVENT: 5275 setSupplicantRunning(false); 5276 setSupplicantRunning(true); 5277 break; 5278 case WifiManager.CONNECT_NETWORK: 5279 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5280 WifiManager.BUSY); 5281 break; 5282 case WifiManager.FORGET_NETWORK: 5283 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5284 WifiManager.BUSY); 5285 break; 5286 case WifiManager.SAVE_NETWORK: 5287 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5288 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5289 WifiManager.BUSY); 5290 break; 5291 case WifiManager.START_WPS: 5292 replyToMessage(message, WifiManager.WPS_FAILED, 5293 WifiManager.BUSY); 5294 break; 5295 case WifiManager.CANCEL_WPS: 5296 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5297 WifiManager.BUSY); 5298 break; 5299 case WifiManager.DISABLE_NETWORK: 5300 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5301 WifiManager.BUSY); 5302 break; 5303 case WifiManager.RSSI_PKTCNT_FETCH: 5304 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5305 WifiManager.BUSY); 5306 break; 5307 case CMD_GET_SUPPORTED_FEATURES: 5308 if (WifiNative.startHal()) { 5309 int featureSet = WifiNative.getSupportedFeatureSet(); 5310 replyToMessage(message, message.what, featureSet); 5311 } else { 5312 replyToMessage(message, message.what, 0); 5313 } 5314 break; 5315 case CMD_GET_LINK_LAYER_STATS: 5316 // Not supported hence reply with error message 5317 replyToMessage(message, message.what, null); 5318 break; 5319 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5320 NetworkInfo info = (NetworkInfo) message.obj; 5321 mP2pConnected.set(info.isConnected()); 5322 break; 5323 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5324 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5325 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5326 break; 5327 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5328 case CMD_UPDATE_LINKPROPERTIES: 5329 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5330 break; 5331 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5332 case CMD_IP_CONFIGURATION_LOST: 5333 case CMD_IP_REACHABILITY_LOST: 5334 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5335 break; 5336 case CMD_GET_CONNECTION_STATISTICS: 5337 replyToMessage(message, message.what, mWifiConnectionStatistics); 5338 break; 5339 case CMD_REMOVE_APP_CONFIGURATIONS: 5340 deferMessage(message); 5341 break; 5342 case CMD_REMOVE_USER_CONFIGURATIONS: 5343 deferMessage(message); 5344 break; 5345 default: 5346 loge("Error! unhandled message" + message); 5347 break; 5348 } 5349 return HANDLED; 5350 } 5351 } 5352 5353 class InitialState extends State { 5354 @Override 5355 public void enter() { 5356 mWifiNative.unloadDriver(); 5357 if (mWifiP2pChannel == null) { 5358 mWifiP2pChannel = new AsyncChannel(); 5359 mWifiP2pChannel.connect(mContext, getHandler(), 5360 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5361 } 5362 5363 if (mWifiApConfigChannel == null) { 5364 mWifiApConfigChannel = new AsyncChannel(); 5365 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5366 mContext, getHandler()); 5367 wifiApConfigStore.loadApConfiguration(); 5368 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5369 wifiApConfigStore.getMessenger()); 5370 } 5371 } 5372 @Override 5373 public boolean processMessage(Message message) { 5374 logStateAndMessage(message, getClass().getSimpleName()); 5375 switch (message.what) { 5376 case CMD_START_SUPPLICANT: 5377 if (mWifiNative.loadDriver()) { 5378 try { 5379 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5380 } catch (Exception e) { 5381 loge("Failed to reload STA firmware " + e); 5382 // Continue 5383 } 5384 5385 try { 5386 // A runtime crash can leave the interface up and 5387 // IP addresses configured, and this affects 5388 // connectivity when supplicant starts up. 5389 // Ensure interface is down and we have no IP 5390 // addresses before a supplicant start. 5391 mNwService.setInterfaceDown(mInterfaceName); 5392 mNwService.clearInterfaceAddresses(mInterfaceName); 5393 5394 // Set privacy extensions 5395 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5396 5397 // IPv6 is enabled only as long as access point is connected since: 5398 // - IPv6 addresses and routes stick around after disconnection 5399 // - kernel is unaware when connected and fails to start IPv6 negotiation 5400 // - kernel can start autoconfiguration when 802.1x is not complete 5401 mNwService.disableIpv6(mInterfaceName); 5402 } catch (RemoteException re) { 5403 loge("Unable to change interface settings: " + re); 5404 } catch (IllegalStateException ie) { 5405 loge("Unable to change interface settings: " + ie); 5406 } 5407 5408 /* Stop a running supplicant after a runtime restart 5409 * Avoids issues with drivers that do not handle interface down 5410 * on a running supplicant properly. 5411 */ 5412 mWifiMonitor.killSupplicant(mP2pSupported); 5413 if(mWifiNative.startSupplicant(mP2pSupported)) { 5414 setWifiState(WIFI_STATE_ENABLING); 5415 if (DBG) log("Supplicant start successful"); 5416 mWifiMonitor.startMonitoring(); 5417 transitionTo(mSupplicantStartingState); 5418 } else { 5419 loge("Failed to start supplicant!"); 5420 } 5421 } else { 5422 loge("Failed to load driver"); 5423 } 5424 break; 5425 case CMD_START_AP: 5426 if (mWifiNative.loadDriver()) { 5427 setWifiApState(WIFI_AP_STATE_ENABLING); 5428 transitionTo(mSoftApStartingState); 5429 } else { 5430 loge("Failed to load driver for softap"); 5431 } 5432 break; 5433 default: 5434 return NOT_HANDLED; 5435 } 5436 return HANDLED; 5437 } 5438 } 5439 5440 class SupplicantStartingState extends State { 5441 private void initializeWpsDetails() { 5442 String detail; 5443 detail = SystemProperties.get("ro.product.name", ""); 5444 if (!mWifiNative.setDeviceName(detail)) { 5445 loge("Failed to set device name " + detail); 5446 } 5447 detail = SystemProperties.get("ro.product.manufacturer", ""); 5448 if (!mWifiNative.setManufacturer(detail)) { 5449 loge("Failed to set manufacturer " + detail); 5450 } 5451 detail = SystemProperties.get("ro.product.model", ""); 5452 if (!mWifiNative.setModelName(detail)) { 5453 loge("Failed to set model name " + detail); 5454 } 5455 detail = SystemProperties.get("ro.product.model", ""); 5456 if (!mWifiNative.setModelNumber(detail)) { 5457 loge("Failed to set model number " + detail); 5458 } 5459 detail = SystemProperties.get("ro.serialno", ""); 5460 if (!mWifiNative.setSerialNumber(detail)) { 5461 loge("Failed to set serial number " + detail); 5462 } 5463 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5464 loge("Failed to set WPS config methods"); 5465 } 5466 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5467 loge("Failed to set primary device type " + mPrimaryDeviceType); 5468 } 5469 } 5470 5471 @Override 5472 public boolean processMessage(Message message) { 5473 logStateAndMessage(message, getClass().getSimpleName()); 5474 5475 switch(message.what) { 5476 case WifiMonitor.SUP_CONNECTION_EVENT: 5477 if (DBG) log("Supplicant connection established"); 5478 setWifiState(WIFI_STATE_ENABLED); 5479 mSupplicantRestartCount = 0; 5480 /* Reset the supplicant state to indicate the supplicant 5481 * state is not known at this time */ 5482 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5483 /* Initialize data structures */ 5484 mLastBssid = null; 5485 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5486 mLastSignalLevel = -1; 5487 5488 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5489 mWifiNative.enableSaveConfig(); 5490 mWifiConfigStore.loadAndEnableAllNetworks(); 5491 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5492 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5493 } 5494 initializeWpsDetails(); 5495 5496 sendSupplicantConnectionChangedBroadcast(true); 5497 transitionTo(mDriverStartedState); 5498 break; 5499 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5500 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5501 loge("Failed to setup control channel, restart supplicant"); 5502 mWifiMonitor.killSupplicant(mP2pSupported); 5503 transitionTo(mInitialState); 5504 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5505 } else { 5506 loge("Failed " + mSupplicantRestartCount + 5507 " times to start supplicant, unload driver"); 5508 mSupplicantRestartCount = 0; 5509 setWifiState(WIFI_STATE_UNKNOWN); 5510 transitionTo(mInitialState); 5511 } 5512 break; 5513 case CMD_START_SUPPLICANT: 5514 case CMD_STOP_SUPPLICANT: 5515 case CMD_START_AP: 5516 case CMD_STOP_AP: 5517 case CMD_START_DRIVER: 5518 case CMD_STOP_DRIVER: 5519 case CMD_SET_OPERATIONAL_MODE: 5520 case CMD_SET_COUNTRY_CODE: 5521 case CMD_SET_FREQUENCY_BAND: 5522 case CMD_START_PACKET_FILTERING: 5523 case CMD_STOP_PACKET_FILTERING: 5524 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5525 deferMessage(message); 5526 break; 5527 default: 5528 return NOT_HANDLED; 5529 } 5530 return HANDLED; 5531 } 5532 } 5533 5534 class SupplicantStartedState extends State { 5535 @Override 5536 public void enter() { 5537 /* Wifi is available as long as we have a connection to supplicant */ 5538 mNetworkInfo.setIsAvailable(true); 5539 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5540 5541 int defaultInterval = mContext.getResources().getInteger( 5542 R.integer.config_wifi_supplicant_scan_interval); 5543 5544 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5545 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5546 defaultInterval); 5547 5548 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5549 mWifiNative.setExternalSim(true); 5550 5551 /* turn on use of DFS channels */ 5552 WifiNative.setDfsFlag(true); 5553 5554 /* set country code */ 5555 setCountryCode(); 5556 5557 setRandomMacOui(); 5558 mWifiNative.enableAutoConnect(false); 5559 } 5560 5561 @Override 5562 public boolean processMessage(Message message) { 5563 logStateAndMessage(message, getClass().getSimpleName()); 5564 5565 switch(message.what) { 5566 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5567 if (mP2pSupported) { 5568 transitionTo(mWaitForP2pDisableState); 5569 } else { 5570 transitionTo(mSupplicantStoppingState); 5571 } 5572 break; 5573 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5574 loge("Connection lost, restart supplicant"); 5575 handleSupplicantConnectionLoss(); 5576 handleNetworkDisconnect(); 5577 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5578 if (mP2pSupported) { 5579 transitionTo(mWaitForP2pDisableState); 5580 } else { 5581 transitionTo(mInitialState); 5582 } 5583 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5584 break; 5585 case WifiMonitor.SCAN_RESULTS_EVENT: 5586 case WifiMonitor.SCAN_FAILED_EVENT: 5587 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5588 closeRadioScanStats(); 5589 noteScanEnd(); 5590 setScanResults(); 5591 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5592 /* Just updated results from full scan, let apps know about this */ 5593 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 5594 sendScanResultsAvailableBroadcast(scanSucceeded); 5595 } 5596 mSendScanResultsBroadcast = false; 5597 mIsScanOngoing = false; 5598 mIsFullScanOngoing = false; 5599 if (mBufferedScanMsg.size() > 0) 5600 sendMessage(mBufferedScanMsg.remove()); 5601 break; 5602 case CMD_PING_SUPPLICANT: 5603 boolean ok = mWifiNative.ping(); 5604 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5605 break; 5606 case CMD_GET_CAPABILITY_FREQ: 5607 String freqs = mWifiNative.getFreqCapability(); 5608 replyToMessage(message, message.what, freqs); 5609 break; 5610 case CMD_START_AP: 5611 /* Cannot start soft AP while in client mode */ 5612 loge("Failed to start soft AP with a running supplicant"); 5613 setWifiApState(WIFI_AP_STATE_FAILED); 5614 break; 5615 case CMD_SET_OPERATIONAL_MODE: 5616 mOperationalMode = message.arg1; 5617 mWifiConfigStore. 5618 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5619 break; 5620 case CMD_TARGET_BSSID: 5621 // Trying to associate to this BSSID 5622 if (message.obj != null) { 5623 mTargetRoamBSSID = (String) message.obj; 5624 } 5625 break; 5626 case CMD_GET_LINK_LAYER_STATS: 5627 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5628 if (stats == null) { 5629 // When firmware doesnt support link layer stats, return an empty object 5630 stats = new WifiLinkLayerStats(); 5631 } 5632 replyToMessage(message, message.what, stats); 5633 break; 5634 case CMD_SET_COUNTRY_CODE: 5635 String country = (String) message.obj; 5636 5637 final boolean persist = (message.arg2 == 1); 5638 final int sequence = message.arg1; 5639 5640 if (sequence != mCountryCodeSequence.get()) { 5641 if (DBG) log("set country code ignored due to sequnce num"); 5642 break; 5643 } 5644 if (DBG) log("set country code " + country); 5645 country = country.toUpperCase(Locale.ROOT); 5646 5647 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5648 if (mWifiNative.setCountryCode(country)) { 5649 mDriverSetCountryCode = country; 5650 } else { 5651 loge("Failed to set country code " + country); 5652 } 5653 } 5654 5655 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5656 break; 5657 default: 5658 return NOT_HANDLED; 5659 } 5660 return HANDLED; 5661 } 5662 5663 @Override 5664 public void exit() { 5665 mNetworkInfo.setIsAvailable(false); 5666 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5667 } 5668 } 5669 5670 class SupplicantStoppingState extends State { 5671 @Override 5672 public void enter() { 5673 /* Send any reset commands to supplicant before shutting it down */ 5674 handleNetworkDisconnect(); 5675 if (mDhcpStateMachine != null) { 5676 mDhcpStateMachine.doQuit(); 5677 } 5678 5679 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5680 if (suppState == null) suppState = "unknown"; 5681 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5682 if (p2pSuppState == null) p2pSuppState = "unknown"; 5683 5684 loge("SupplicantStoppingState: stopSupplicant " 5685 + " init.svc.wpa_supplicant=" + suppState 5686 + " init.svc.p2p_supplicant=" + p2pSuppState); 5687 mWifiMonitor.stopSupplicant(); 5688 5689 /* Send ourselves a delayed message to indicate failure after a wait time */ 5690 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5691 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5692 setWifiState(WIFI_STATE_DISABLING); 5693 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5694 } 5695 @Override 5696 public boolean processMessage(Message message) { 5697 logStateAndMessage(message, getClass().getSimpleName()); 5698 5699 switch(message.what) { 5700 case WifiMonitor.SUP_CONNECTION_EVENT: 5701 loge("Supplicant connection received while stopping"); 5702 break; 5703 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5704 if (DBG) log("Supplicant connection lost"); 5705 handleSupplicantConnectionLoss(); 5706 transitionTo(mInitialState); 5707 break; 5708 case CMD_STOP_SUPPLICANT_FAILED: 5709 if (message.arg1 == mSupplicantStopFailureToken) { 5710 loge("Timed out on a supplicant stop, kill and proceed"); 5711 handleSupplicantConnectionLoss(); 5712 transitionTo(mInitialState); 5713 } 5714 break; 5715 case CMD_START_SUPPLICANT: 5716 case CMD_STOP_SUPPLICANT: 5717 case CMD_START_AP: 5718 case CMD_STOP_AP: 5719 case CMD_START_DRIVER: 5720 case CMD_STOP_DRIVER: 5721 case CMD_SET_OPERATIONAL_MODE: 5722 case CMD_SET_COUNTRY_CODE: 5723 case CMD_SET_FREQUENCY_BAND: 5724 case CMD_START_PACKET_FILTERING: 5725 case CMD_STOP_PACKET_FILTERING: 5726 deferMessage(message); 5727 break; 5728 default: 5729 return NOT_HANDLED; 5730 } 5731 return HANDLED; 5732 } 5733 } 5734 5735 class DriverStartingState extends State { 5736 private int mTries; 5737 @Override 5738 public void enter() { 5739 mTries = 1; 5740 /* Send ourselves a delayed message to start driver a second time */ 5741 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5742 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5743 } 5744 @Override 5745 public boolean processMessage(Message message) { 5746 logStateAndMessage(message, getClass().getSimpleName()); 5747 5748 switch(message.what) { 5749 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5750 SupplicantState state = handleSupplicantStateChange(message); 5751 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5752 * a state that indicates driver has started, it is ready to 5753 * receive driver commands 5754 */ 5755 if (SupplicantState.isDriverActive(state)) { 5756 transitionTo(mDriverStartedState); 5757 } 5758 break; 5759 case CMD_DRIVER_START_TIMED_OUT: 5760 if (message.arg1 == mDriverStartToken) { 5761 if (mTries >= 2) { 5762 loge("Failed to start driver after " + mTries); 5763 transitionTo(mDriverStoppedState); 5764 } else { 5765 loge("Driver start failed, retrying"); 5766 mWakeLock.acquire(); 5767 mWifiNative.startDriver(); 5768 mWakeLock.release(); 5769 5770 ++mTries; 5771 /* Send ourselves a delayed message to start driver again */ 5772 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5773 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5774 } 5775 } 5776 break; 5777 /* Queue driver commands & connection events */ 5778 case CMD_START_DRIVER: 5779 case CMD_STOP_DRIVER: 5780 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5781 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5782 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5783 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5784 case WifiMonitor.WPS_OVERLAP_EVENT: 5785 case CMD_SET_COUNTRY_CODE: 5786 case CMD_SET_FREQUENCY_BAND: 5787 case CMD_START_PACKET_FILTERING: 5788 case CMD_STOP_PACKET_FILTERING: 5789 case CMD_START_SCAN: 5790 case CMD_DISCONNECT: 5791 case CMD_REASSOCIATE: 5792 case CMD_RECONNECT: 5793 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5794 deferMessage(message); 5795 break; 5796 case WifiMonitor.SCAN_RESULTS_EVENT: 5797 case WifiMonitor.SCAN_FAILED_EVENT: 5798 // Loose scan results obtained in Driver Starting state, they can only confuse 5799 // the state machine 5800 break; 5801 default: 5802 return NOT_HANDLED; 5803 } 5804 return HANDLED; 5805 } 5806 } 5807 5808 class DriverStartedState extends State { 5809 @Override 5810 public void enter() { 5811 5812 if (PDBG) { 5813 loge("DriverStartedState enter"); 5814 } 5815 if (DRIVERDBG) { 5816 mWifiLogger.startLoggingAllBuffer(1, 0, 60, 0); 5817 mWifiLogger.getAllRingBufferData(); 5818 } 5819 mIsRunning = true; 5820 mInDelayedStop = false; 5821 mDelayedStopCounter++; 5822 updateBatteryWorkSource(null); 5823 /** 5824 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5825 * When this mode is on, some of the low-level scan parameters used by the 5826 * driver are changed to reduce interference with bluetooth 5827 */ 5828 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5829 /* set frequency band of operation */ 5830 setFrequencyBand(); 5831 /* initialize network state */ 5832 setNetworkDetailedState(DetailedState.DISCONNECTED); 5833 5834 /* Remove any filtering on Multicast v6 at start */ 5835 mWifiNative.stopFilteringMulticastV6Packets(); 5836 5837 /* Reset Multicast v4 filtering state */ 5838 if (mFilteringMulticastV4Packets.get()) { 5839 mWifiNative.startFilteringMulticastV4Packets(); 5840 } else { 5841 mWifiNative.stopFilteringMulticastV4Packets(); 5842 } 5843 5844 mDhcpActive = false; 5845 5846 if (mOperationalMode != CONNECT_MODE) { 5847 mWifiNative.disconnect(); 5848 mWifiConfigStore.disableAllNetworks(); 5849 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5850 setWifiState(WIFI_STATE_DISABLED); 5851 } 5852 transitionTo(mScanModeState); 5853 } else { 5854 5855 // Status pulls in the current supplicant state and network connection state 5856 // events over the monitor connection. This helps framework sync up with 5857 // current supplicant state 5858 // TODO: actually check th supplicant status string and make sure the supplicant 5859 // is in disconnecte4d state. 5860 mWifiNative.status(); 5861 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5862 transitionTo(mDisconnectedState); 5863 transitionTo(mDisconnectedState); 5864 } 5865 5866 // We may have missed screen update at boot 5867 if (mScreenBroadcastReceived.get() == false) { 5868 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5869 Context.POWER_SERVICE); 5870 handleScreenStateChanged(powerManager.isScreenOn()); 5871 } else { 5872 // Set the right suspend mode settings 5873 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5874 && mUserWantsSuspendOpt.get()); 5875 } 5876 mWifiNative.setPowerSave(true); 5877 5878 if (mP2pSupported) { 5879 if (mOperationalMode == CONNECT_MODE) { 5880 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5881 } else { 5882 // P2P statemachine starts in disabled state, and is not enabled until 5883 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5884 // keep it disabled. 5885 } 5886 } 5887 5888 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5889 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5890 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5891 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5892 5893 if (WifiNative.startHal()) { 5894 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 5895 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 5896 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 5897 mHalBasedPnoDriverSupported = true; 5898 } 5899 } 5900 5901 if (PDBG) { 5902 loge("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 5903 + " feature=" + mHalFeatureSet); 5904 } 5905 } 5906 5907 @Override 5908 public boolean processMessage(Message message) { 5909 logStateAndMessage(message, getClass().getSimpleName()); 5910 5911 switch(message.what) { 5912 case CMD_START_SCAN: 5913 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5914 break; 5915 case CMD_SET_FREQUENCY_BAND: 5916 int band = message.arg1; 5917 if (DBG) log("set frequency band " + band); 5918 if (mWifiNative.setBand(band)) { 5919 5920 if (PDBG) loge("did set frequency band " + band); 5921 5922 mFrequencyBand.set(band); 5923 // Flush old data - like scan results 5924 mWifiNative.bssFlush(); 5925 // Fetch the latest scan results when frequency band is set 5926// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5927 5928 if (PDBG) loge("done set frequency band " + band); 5929 5930 } else { 5931 loge("Failed to set frequency band " + band); 5932 } 5933 break; 5934 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5935 mBluetoothConnectionActive = (message.arg1 != 5936 BluetoothAdapter.STATE_DISCONNECTED); 5937 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5938 break; 5939 case CMD_STOP_DRIVER: 5940 int mode = message.arg1; 5941 5942 /* Already doing a delayed stop */ 5943 if (mInDelayedStop) { 5944 if (DBG) log("Already in delayed stop"); 5945 break; 5946 } 5947 /* disconnect right now, but leave the driver running for a bit */ 5948 mWifiConfigStore.disableAllNetworks(); 5949 5950 mInDelayedStop = true; 5951 mDelayedStopCounter++; 5952 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5953 5954 /* send regular delayed shut down */ 5955 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5956 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5957 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5958 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5959 DRIVER_STOP_REQUEST, driverStopIntent, 5960 PendingIntent.FLAG_UPDATE_CURRENT); 5961 5962 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5963 + mDriverStopDelayMs, mDriverStopIntent); 5964 break; 5965 case CMD_START_DRIVER: 5966 if (mInDelayedStop) { 5967 mInDelayedStop = false; 5968 mDelayedStopCounter++; 5969 mAlarmManager.cancel(mDriverStopIntent); 5970 if (DBG) log("Delayed stop ignored due to start"); 5971 if (mOperationalMode == CONNECT_MODE) { 5972 mWifiConfigStore.enableAllNetworks(); 5973 } 5974 } 5975 break; 5976 case CMD_DELAYED_STOP_DRIVER: 5977 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5978 if (message.arg1 != mDelayedStopCounter) break; 5979 if (getCurrentState() != mDisconnectedState) { 5980 mWifiNative.disconnect(); 5981 handleNetworkDisconnect(); 5982 } 5983 mWakeLock.acquire(); 5984 mWifiNative.stopDriver(); 5985 mWakeLock.release(); 5986 if (mP2pSupported) { 5987 transitionTo(mWaitForP2pDisableState); 5988 } else { 5989 transitionTo(mDriverStoppingState); 5990 } 5991 break; 5992 case CMD_START_PACKET_FILTERING: 5993 if (message.arg1 == MULTICAST_V6) { 5994 mWifiNative.startFilteringMulticastV6Packets(); 5995 } else if (message.arg1 == MULTICAST_V4) { 5996 mWifiNative.startFilteringMulticastV4Packets(); 5997 } else { 5998 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5999 } 6000 break; 6001 case CMD_STOP_PACKET_FILTERING: 6002 if (message.arg1 == MULTICAST_V6) { 6003 mWifiNative.stopFilteringMulticastV6Packets(); 6004 } else if (message.arg1 == MULTICAST_V4) { 6005 mWifiNative.stopFilteringMulticastV4Packets(); 6006 } else { 6007 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6008 } 6009 break; 6010 case CMD_SET_SUSPEND_OPT_ENABLED: 6011 if (message.arg1 == 1) { 6012 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6013 mSuspendWakeLock.release(); 6014 } else { 6015 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6016 } 6017 break; 6018 case CMD_SET_HIGH_PERF_MODE: 6019 if (message.arg1 == 1) { 6020 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6021 } else { 6022 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6023 } 6024 break; 6025 case CMD_ENABLE_TDLS: 6026 if (message.obj != null) { 6027 String remoteAddress = (String) message.obj; 6028 boolean enable = (message.arg1 == 1); 6029 mWifiNative.startTdls(remoteAddress, enable); 6030 } 6031 break; 6032 case WifiMonitor.ANQP_DONE_EVENT: 6033 Log.d(Utils.hs2LogTag(getClass()), String.format("WFSM: ANQP for %016x %s", 6034 (Long)message.obj, message.arg1 != 0 ? "success" : "fail")); 6035 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6036 break; 6037 default: 6038 return NOT_HANDLED; 6039 } 6040 return HANDLED; 6041 } 6042 @Override 6043 public void exit() { 6044 mIsRunning = false; 6045 updateBatteryWorkSource(null); 6046 mScanResults = new ArrayList<>(); 6047 6048 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6049 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6050 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6051 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6052 noteScanEnd(); // wrap up any pending request. 6053 mBufferedScanMsg.clear(); 6054 } 6055 } 6056 6057 class WaitForP2pDisableState extends State { 6058 private State mTransitionToState; 6059 @Override 6060 public void enter() { 6061 switch (getCurrentMessage().what) { 6062 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6063 mTransitionToState = mInitialState; 6064 break; 6065 case CMD_DELAYED_STOP_DRIVER: 6066 mTransitionToState = mDriverStoppingState; 6067 break; 6068 case CMD_STOP_SUPPLICANT: 6069 mTransitionToState = mSupplicantStoppingState; 6070 break; 6071 default: 6072 mTransitionToState = mDriverStoppingState; 6073 break; 6074 } 6075 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6076 } 6077 @Override 6078 public boolean processMessage(Message message) { 6079 logStateAndMessage(message, getClass().getSimpleName()); 6080 6081 switch(message.what) { 6082 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6083 transitionTo(mTransitionToState); 6084 break; 6085 /* Defer wifi start/shut and driver commands */ 6086 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6087 case CMD_START_SUPPLICANT: 6088 case CMD_STOP_SUPPLICANT: 6089 case CMD_START_AP: 6090 case CMD_STOP_AP: 6091 case CMD_START_DRIVER: 6092 case CMD_STOP_DRIVER: 6093 case CMD_SET_OPERATIONAL_MODE: 6094 case CMD_SET_COUNTRY_CODE: 6095 case CMD_SET_FREQUENCY_BAND: 6096 case CMD_START_PACKET_FILTERING: 6097 case CMD_STOP_PACKET_FILTERING: 6098 case CMD_START_SCAN: 6099 case CMD_DISCONNECT: 6100 case CMD_REASSOCIATE: 6101 case CMD_RECONNECT: 6102 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6103 deferMessage(message); 6104 break; 6105 default: 6106 return NOT_HANDLED; 6107 } 6108 return HANDLED; 6109 } 6110 } 6111 6112 class DriverStoppingState extends State { 6113 @Override 6114 public boolean processMessage(Message message) { 6115 logStateAndMessage(message, getClass().getSimpleName()); 6116 6117 switch(message.what) { 6118 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6119 SupplicantState state = handleSupplicantStateChange(message); 6120 if (state == SupplicantState.INTERFACE_DISABLED) { 6121 transitionTo(mDriverStoppedState); 6122 } 6123 break; 6124 /* Queue driver commands */ 6125 case CMD_START_DRIVER: 6126 case CMD_STOP_DRIVER: 6127 case CMD_SET_COUNTRY_CODE: 6128 case CMD_SET_FREQUENCY_BAND: 6129 case CMD_START_PACKET_FILTERING: 6130 case CMD_STOP_PACKET_FILTERING: 6131 case CMD_START_SCAN: 6132 case CMD_DISCONNECT: 6133 case CMD_REASSOCIATE: 6134 case CMD_RECONNECT: 6135 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6136 deferMessage(message); 6137 break; 6138 default: 6139 return NOT_HANDLED; 6140 } 6141 return HANDLED; 6142 } 6143 } 6144 6145 class DriverStoppedState extends State { 6146 @Override 6147 public boolean processMessage(Message message) { 6148 logStateAndMessage(message, getClass().getSimpleName()); 6149 switch (message.what) { 6150 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6151 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6152 SupplicantState state = stateChangeResult.state; 6153 // A WEXT bug means that we can be back to driver started state 6154 // unexpectedly 6155 if (SupplicantState.isDriverActive(state)) { 6156 transitionTo(mDriverStartedState); 6157 } 6158 break; 6159 case CMD_START_DRIVER: 6160 mWakeLock.acquire(); 6161 mWifiNative.startDriver(); 6162 mWakeLock.release(); 6163 transitionTo(mDriverStartingState); 6164 break; 6165 default: 6166 return NOT_HANDLED; 6167 } 6168 return HANDLED; 6169 } 6170 } 6171 6172 class ScanModeState extends State { 6173 private int mLastOperationMode; 6174 @Override 6175 public void enter() { 6176 mLastOperationMode = mOperationalMode; 6177 } 6178 @Override 6179 public boolean processMessage(Message message) { 6180 logStateAndMessage(message, getClass().getSimpleName()); 6181 6182 switch(message.what) { 6183 case CMD_SET_OPERATIONAL_MODE: 6184 if (message.arg1 == CONNECT_MODE) { 6185 6186 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6187 setWifiState(WIFI_STATE_ENABLED); 6188 // Load and re-enable networks when going back to enabled state 6189 // This is essential for networks to show up after restore 6190 mWifiConfigStore.loadAndEnableAllNetworks(); 6191 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6192 } else { 6193 mWifiConfigStore.enableAllNetworks(); 6194 } 6195 6196 // Try autojoining with recent network already present in the cache 6197 // If none are found then trigger a scan which will trigger autojoin 6198 // upon reception of scan results event 6199 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6200 startScan(ENABLE_WIFI, 0, null, null); 6201 } 6202 6203 // Loose last selection choice since user toggled WiFi 6204 mWifiConfigStore. 6205 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6206 6207 mOperationalMode = CONNECT_MODE; 6208 transitionTo(mDisconnectedState); 6209 } else { 6210 // Nothing to do 6211 return HANDLED; 6212 } 6213 break; 6214 // Handle scan. All the connection related commands are 6215 // handled only in ConnectModeState 6216 case CMD_START_SCAN: 6217 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6218 break; 6219 default: 6220 return NOT_HANDLED; 6221 } 6222 return HANDLED; 6223 } 6224 } 6225 6226 6227 String smToString(Message message) { 6228 return smToString(message.what); 6229 } 6230 6231 String smToString(int what) { 6232 String s = "unknown"; 6233 switch (what) { 6234 case WifiMonitor.DRIVER_HUNG_EVENT: 6235 s = "DRIVER_HUNG_EVENT"; 6236 break; 6237 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6238 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6239 break; 6240 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6241 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6242 break; 6243 case CMD_SET_FREQUENCY_BAND: 6244 s = "CMD_SET_FREQUENCY_BAND"; 6245 break; 6246 case CMD_DELAYED_NETWORK_DISCONNECT: 6247 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6248 break; 6249 case CMD_TEST_NETWORK_DISCONNECT: 6250 s = "CMD_TEST_NETWORK_DISCONNECT"; 6251 break; 6252 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6253 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6254 break; 6255 case CMD_DISABLE_EPHEMERAL_NETWORK: 6256 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6257 break; 6258 case CMD_START_DRIVER: 6259 s = "CMD_START_DRIVER"; 6260 break; 6261 case CMD_STOP_DRIVER: 6262 s = "CMD_STOP_DRIVER"; 6263 break; 6264 case CMD_STOP_SUPPLICANT: 6265 s = "CMD_STOP_SUPPLICANT"; 6266 break; 6267 case CMD_STOP_SUPPLICANT_FAILED: 6268 s = "CMD_STOP_SUPPLICANT_FAILED"; 6269 break; 6270 case CMD_START_SUPPLICANT: 6271 s = "CMD_START_SUPPLICANT"; 6272 break; 6273 case CMD_REQUEST_AP_CONFIG: 6274 s = "CMD_REQUEST_AP_CONFIG"; 6275 break; 6276 case CMD_RESPONSE_AP_CONFIG: 6277 s = "CMD_RESPONSE_AP_CONFIG"; 6278 break; 6279 case CMD_TETHER_STATE_CHANGE: 6280 s = "CMD_TETHER_STATE_CHANGE"; 6281 break; 6282 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6283 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6284 break; 6285 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6286 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6287 break; 6288 case CMD_ADD_OR_UPDATE_NETWORK: 6289 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6290 break; 6291 case CMD_REMOVE_NETWORK: 6292 s = "CMD_REMOVE_NETWORK"; 6293 break; 6294 case CMD_ENABLE_NETWORK: 6295 s = "CMD_ENABLE_NETWORK"; 6296 break; 6297 case CMD_ENABLE_ALL_NETWORKS: 6298 s = "CMD_ENABLE_ALL_NETWORKS"; 6299 break; 6300 case CMD_AUTO_CONNECT: 6301 s = "CMD_AUTO_CONNECT"; 6302 break; 6303 case CMD_AUTO_ROAM: 6304 s = "CMD_AUTO_ROAM"; 6305 break; 6306 case CMD_AUTO_SAVE_NETWORK: 6307 s = "CMD_AUTO_SAVE_NETWORK"; 6308 break; 6309 case CMD_BOOT_COMPLETED: 6310 s = "CMD_BOOT_COMPLETED"; 6311 break; 6312 case DhcpStateMachine.CMD_START_DHCP: 6313 s = "CMD_START_DHCP"; 6314 break; 6315 case DhcpStateMachine.CMD_STOP_DHCP: 6316 s = "CMD_STOP_DHCP"; 6317 break; 6318 case DhcpStateMachine.CMD_RENEW_DHCP: 6319 s = "CMD_RENEW_DHCP"; 6320 break; 6321 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6322 s = "CMD_PRE_DHCP_ACTION"; 6323 break; 6324 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6325 s = "CMD_POST_DHCP_ACTION"; 6326 break; 6327 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6328 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6329 break; 6330 case DhcpStateMachine.CMD_ON_QUIT: 6331 s = "CMD_ON_QUIT"; 6332 break; 6333 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6334 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6335 break; 6336 case WifiManager.DISABLE_NETWORK: 6337 s = "WifiManager.DISABLE_NETWORK"; 6338 break; 6339 case CMD_BLACKLIST_NETWORK: 6340 s = "CMD_BLACKLIST_NETWORK"; 6341 break; 6342 case CMD_CLEAR_BLACKLIST: 6343 s = "CMD_CLEAR_BLACKLIST"; 6344 break; 6345 case CMD_SAVE_CONFIG: 6346 s = "CMD_SAVE_CONFIG"; 6347 break; 6348 case CMD_GET_CONFIGURED_NETWORKS: 6349 s = "CMD_GET_CONFIGURED_NETWORKS"; 6350 break; 6351 case CMD_GET_SUPPORTED_FEATURES: 6352 s = "CMD_GET_SUPPORTED_FEATURES"; 6353 break; 6354 case CMD_UNWANTED_NETWORK: 6355 s = "CMD_UNWANTED_NETWORK"; 6356 break; 6357 case CMD_NETWORK_STATUS: 6358 s = "CMD_NETWORK_STATUS"; 6359 break; 6360 case CMD_GET_LINK_LAYER_STATS: 6361 s = "CMD_GET_LINK_LAYER_STATS"; 6362 break; 6363 case CMD_GET_MATCHING_CONFIG: 6364 s = "CMD_GET_MATCHING_CONFIG"; 6365 break; 6366 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6367 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6368 break; 6369 case CMD_DISCONNECT: 6370 s = "CMD_DISCONNECT"; 6371 break; 6372 case CMD_RECONNECT: 6373 s = "CMD_RECONNECT"; 6374 break; 6375 case CMD_REASSOCIATE: 6376 s = "CMD_REASSOCIATE"; 6377 break; 6378 case CMD_GET_CONNECTION_STATISTICS: 6379 s = "CMD_GET_CONNECTION_STATISTICS"; 6380 break; 6381 case CMD_SET_HIGH_PERF_MODE: 6382 s = "CMD_SET_HIGH_PERF_MODE"; 6383 break; 6384 case CMD_SET_COUNTRY_CODE: 6385 s = "CMD_SET_COUNTRY_CODE"; 6386 break; 6387 case CMD_ENABLE_RSSI_POLL: 6388 s = "CMD_ENABLE_RSSI_POLL"; 6389 break; 6390 case CMD_RSSI_POLL: 6391 s = "CMD_RSSI_POLL"; 6392 break; 6393 case CMD_START_PACKET_FILTERING: 6394 s = "CMD_START_PACKET_FILTERING"; 6395 break; 6396 case CMD_STOP_PACKET_FILTERING: 6397 s = "CMD_STOP_PACKET_FILTERING"; 6398 break; 6399 case CMD_SET_SUSPEND_OPT_ENABLED: 6400 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6401 break; 6402 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6403 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6404 break; 6405 case CMD_UPDATE_LINKPROPERTIES: 6406 s = "CMD_UPDATE_LINKPROPERTIES"; 6407 break; 6408 case CMD_RELOAD_TLS_AND_RECONNECT: 6409 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6410 break; 6411 case WifiManager.CONNECT_NETWORK: 6412 s = "CONNECT_NETWORK"; 6413 break; 6414 case WifiManager.SAVE_NETWORK: 6415 s = "SAVE_NETWORK"; 6416 break; 6417 case WifiManager.FORGET_NETWORK: 6418 s = "FORGET_NETWORK"; 6419 break; 6420 case WifiMonitor.SUP_CONNECTION_EVENT: 6421 s = "SUP_CONNECTION_EVENT"; 6422 break; 6423 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6424 s = "SUP_DISCONNECTION_EVENT"; 6425 break; 6426 case WifiMonitor.SCAN_RESULTS_EVENT: 6427 s = "SCAN_RESULTS_EVENT"; 6428 break; 6429 case WifiMonitor.SCAN_FAILED_EVENT: 6430 s = "SCAN_FAILED_EVENT"; 6431 break; 6432 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6433 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6434 break; 6435 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6436 s = "AUTHENTICATION_FAILURE_EVENT"; 6437 break; 6438 case WifiMonitor.SSID_TEMP_DISABLED: 6439 s = "SSID_TEMP_DISABLED"; 6440 break; 6441 case WifiMonitor.SSID_REENABLED: 6442 s = "SSID_REENABLED"; 6443 break; 6444 case WifiMonitor.WPS_SUCCESS_EVENT: 6445 s = "WPS_SUCCESS_EVENT"; 6446 break; 6447 case WifiMonitor.WPS_FAIL_EVENT: 6448 s = "WPS_FAIL_EVENT"; 6449 break; 6450 case WifiMonitor.SUP_REQUEST_IDENTITY: 6451 s = "SUP_REQUEST_IDENTITY"; 6452 break; 6453 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6454 s = "NETWORK_CONNECTION_EVENT"; 6455 break; 6456 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6457 s = "NETWORK_DISCONNECTION_EVENT"; 6458 break; 6459 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6460 s = "ASSOCIATION_REJECTION_EVENT"; 6461 break; 6462 case CMD_SET_OPERATIONAL_MODE: 6463 s = "CMD_SET_OPERATIONAL_MODE"; 6464 break; 6465 case CMD_START_SCAN: 6466 s = "CMD_START_SCAN"; 6467 break; 6468 case CMD_DISABLE_P2P_RSP: 6469 s = "CMD_DISABLE_P2P_RSP"; 6470 break; 6471 case CMD_DISABLE_P2P_REQ: 6472 s = "CMD_DISABLE_P2P_REQ"; 6473 break; 6474 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6475 s = "GOOD_LINK_DETECTED"; 6476 break; 6477 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6478 s = "POOR_LINK_DETECTED"; 6479 break; 6480 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6481 s = "GROUP_CREATING_TIMED_OUT"; 6482 break; 6483 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6484 s = "P2P_CONNECTION_CHANGED"; 6485 break; 6486 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6487 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6488 break; 6489 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6490 s = "P2P.SET_MIRACAST_MODE"; 6491 break; 6492 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6493 s = "P2P.BLOCK_DISCOVERY"; 6494 break; 6495 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6496 s = "P2P.SET_COUNTRY_CODE"; 6497 break; 6498 case WifiManager.CANCEL_WPS: 6499 s = "CANCEL_WPS"; 6500 break; 6501 case WifiManager.CANCEL_WPS_FAILED: 6502 s = "CANCEL_WPS_FAILED"; 6503 break; 6504 case WifiManager.CANCEL_WPS_SUCCEDED: 6505 s = "CANCEL_WPS_SUCCEDED"; 6506 break; 6507 case WifiManager.START_WPS: 6508 s = "START_WPS"; 6509 break; 6510 case WifiManager.START_WPS_SUCCEEDED: 6511 s = "START_WPS_SUCCEEDED"; 6512 break; 6513 case WifiManager.WPS_FAILED: 6514 s = "WPS_FAILED"; 6515 break; 6516 case WifiManager.WPS_COMPLETED: 6517 s = "WPS_COMPLETED"; 6518 break; 6519 case WifiManager.RSSI_PKTCNT_FETCH: 6520 s = "RSSI_PKTCNT_FETCH"; 6521 break; 6522 case CMD_IP_CONFIGURATION_LOST: 6523 s = "CMD_IP_CONFIGURATION_LOST"; 6524 break; 6525 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6526 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6527 break; 6528 case CMD_IP_REACHABILITY_LOST: 6529 s = "CMD_IP_REACHABILITY_LOST"; 6530 break; 6531 case CMD_STATIC_IP_SUCCESS: 6532 s = "CMD_STATIC_IP_SUCCESSFUL"; 6533 break; 6534 case CMD_STATIC_IP_FAILURE: 6535 s = "CMD_STATIC_IP_FAILURE"; 6536 break; 6537 case DhcpStateMachine.DHCP_SUCCESS: 6538 s = "DHCP_SUCCESS"; 6539 break; 6540 case DhcpStateMachine.DHCP_FAILURE: 6541 s = "DHCP_FAILURE"; 6542 break; 6543 case CMD_TARGET_BSSID: 6544 s = "CMD_TARGET_BSSID"; 6545 break; 6546 case CMD_ASSOCIATED_BSSID: 6547 s = "CMD_ASSOCIATED_BSSID"; 6548 break; 6549 case CMD_REMOVE_APP_CONFIGURATIONS: 6550 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6551 break; 6552 case CMD_REMOVE_USER_CONFIGURATIONS: 6553 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6554 break; 6555 case CMD_ROAM_WATCHDOG_TIMER: 6556 s = "CMD_ROAM_WATCHDOG_TIMER"; 6557 break; 6558 case CMD_SCREEN_STATE_CHANGED: 6559 s = "CMD_SCREEN_STATE_CHANGED"; 6560 break; 6561 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6562 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6563 break; 6564 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6565 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6566 break; 6567 case CMD_STARTED_PNO_DBG: 6568 s = "CMD_STARTED_PNO_DBG"; 6569 break; 6570 case CMD_STARTED_GSCAN_DBG: 6571 s = "CMD_STARTED_PNO_DBG"; 6572 break; 6573 case CMD_PNO_NETWORK_FOUND: 6574 s = "CMD_PNO_NETWORK_FOUND"; 6575 break; 6576 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6577 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6578 break; 6579 default: 6580 s = "what:" + Integer.toString(what); 6581 break; 6582 } 6583 return s; 6584 } 6585 6586 void registerConnected() { 6587 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6588 long now_ms = System.currentTimeMillis(); 6589 // We are switching away from this configuration, 6590 // hence record the time we were connected last 6591 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6592 if (config != null) { 6593 config.lastConnected = System.currentTimeMillis(); 6594 config.autoJoinBailedDueToLowRssi = false; 6595 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6596 config.numConnectionFailures = 0; 6597 config.numIpConfigFailures = 0; 6598 config.numAuthFailures = 0; 6599 config.numAssociation++; 6600 } 6601 mBadLinkspeedcount = 0; 6602 } 6603 } 6604 6605 void registerDisconnected() { 6606 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6607 long now_ms = System.currentTimeMillis(); 6608 // We are switching away from this configuration, 6609 // hence record the time we were connected last 6610 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6611 if (config != null) { 6612 config.lastDisconnected = System.currentTimeMillis(); 6613 if (config.ephemeral) { 6614 // Remove ephemeral WifiConfigurations from file 6615 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6616 } 6617 } 6618 } 6619 } 6620 6621 void noteWifiDisabledWhileAssociated() { 6622 // We got disabled by user while we were associated, make note of it 6623 int rssi = mWifiInfo.getRssi(); 6624 WifiConfiguration config = getCurrentWifiConfiguration(); 6625 if (getCurrentState() == mConnectedState 6626 && rssi != WifiInfo.INVALID_RSSI 6627 && config != null) { 6628 boolean is24GHz = mWifiInfo.is24GHz(); 6629 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6630 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6631 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6632 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6633 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6634 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6635 if (isBadRSSI) { 6636 // Take note that we got disabled while RSSI was Bad 6637 config.numUserTriggeredWifiDisableLowRSSI++; 6638 } else if (isLowRSSI) { 6639 // Take note that we got disabled while RSSI was Low 6640 config.numUserTriggeredWifiDisableBadRSSI++; 6641 } else if (!isHighRSSI) { 6642 // Take note that we got disabled while RSSI was Not high 6643 config.numUserTriggeredWifiDisableNotHighRSSI++; 6644 } 6645 } 6646 } 6647 6648 WifiConfiguration getCurrentWifiConfiguration() { 6649 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6650 return null; 6651 } 6652 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6653 } 6654 6655 ScanResult getCurrentScanResult() { 6656 WifiConfiguration config = getCurrentWifiConfiguration(); 6657 if (config == null) { 6658 return null; 6659 } 6660 String BSSID = mWifiInfo.getBSSID(); 6661 if (BSSID == null) { 6662 BSSID = mTargetRoamBSSID; 6663 } 6664 ScanDetailCache scanDetailCache = 6665 mWifiConfigStore.getScanDetailCache(config); 6666 6667 if (scanDetailCache == null) { 6668 return null; 6669 } 6670 6671 return scanDetailCache.get(BSSID); 6672 } 6673 6674 String getCurrentBSSID() { 6675 if (linkDebouncing) { 6676 return null; 6677 } 6678 return mLastBssid; 6679 } 6680 6681 class ConnectModeState extends State { 6682 6683 @Override 6684 public void enter() { 6685 connectScanningService(); 6686 } 6687 6688 @Override 6689 public boolean processMessage(Message message) { 6690 WifiConfiguration config; 6691 int netId; 6692 boolean ok; 6693 boolean didDisconnect; 6694 String bssid; 6695 String ssid; 6696 NetworkUpdateResult result; 6697 logStateAndMessage(message, getClass().getSimpleName()); 6698 6699 switch (message.what) { 6700 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6701 didBlackListBSSID = false; 6702 bssid = (String) message.obj; 6703 if (bssid == null || TextUtils.isEmpty(bssid)) { 6704 // If BSSID is null, use the target roam BSSID 6705 bssid = mTargetRoamBSSID; 6706 } 6707 if (bssid != null) { 6708 // If we have a BSSID, tell configStore to black list it 6709 synchronized(mScanResultCache) { 6710 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6711 (mLastNetworkId, bssid, false); 6712 } 6713 } 6714 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6715 break; 6716 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6717 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6718 break; 6719 case WifiMonitor.SSID_TEMP_DISABLED: 6720 case WifiMonitor.SSID_REENABLED: 6721 String substr = (String) message.obj; 6722 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6723 "temp-disabled" : "re-enabled"; 6724 loge("ConnectModeState SSID state=" + en + " nid=" 6725 + Integer.toString(message.arg1) + " [" + substr + "]"); 6726 synchronized(mScanResultCache) { 6727 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6728 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6729 } 6730 break; 6731 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6732 SupplicantState state = handleSupplicantStateChange(message); 6733 // A driver/firmware hang can now put the interface in a down state. 6734 // We detect the interface going down and recover from it 6735 if (!SupplicantState.isDriverActive(state)) { 6736 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6737 handleNetworkDisconnect(); 6738 } 6739 log("Detected an interface down, restart driver"); 6740 transitionTo(mDriverStoppedState); 6741 sendMessage(CMD_START_DRIVER); 6742 break; 6743 } 6744 6745 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6746 // when authentication times out after a successful connection, 6747 // we can figure this from the supplicant state. If supplicant 6748 // state is DISCONNECTED, but the mNetworkInfo says we are not 6749 // disconnected, we need to handle a disconnection 6750 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6751 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6752 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6753 handleNetworkDisconnect(); 6754 transitionTo(mDisconnectedState); 6755 } 6756 break; 6757 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6758 if (message.arg1 == 1) { 6759 mWifiNative.disconnect(); 6760 mTemporarilyDisconnectWifi = true; 6761 } else { 6762 mWifiNative.reconnect(); 6763 mTemporarilyDisconnectWifi = false; 6764 } 6765 break; 6766 case CMD_ADD_OR_UPDATE_NETWORK: 6767 config = (WifiConfiguration) message.obj; 6768 6769 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6770 loge("Not authorized to update network " 6771 + " config=" + config.SSID 6772 + " cnid=" + config.networkId 6773 + " uid=" + message.sendingUid); 6774 replyToMessage(message, message.what, FAILURE); 6775 break; 6776 } 6777 6778 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6779 if (res < 0) { 6780 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6781 } else { 6782 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6783 if (curConfig != null && config != null) { 6784 if (curConfig.priority < config.priority 6785 && config.status == WifiConfiguration.Status.ENABLED) { 6786 // Interpret this as a connect attempt 6787 // Set the last selected configuration so as to allow the system to 6788 // stick the last user choice without persisting the choice 6789 mWifiConfigStore.setLastSelectedConfiguration(res); 6790 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 6791 mWifiConfigStore.writeKnownNetworkHistory(false); 6792 6793 // Remember time of last connection attempt 6794 lastConnectAttempt = System.currentTimeMillis(); 6795 6796 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6797 6798 // As a courtesy to the caller, trigger a scan now 6799 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6800 } 6801 } 6802 } 6803 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6804 break; 6805 case CMD_REMOVE_NETWORK: 6806 netId = message.arg1; 6807 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 6808 loge("Not authorized to remove network " 6809 + " cnid=" + netId 6810 + " uid=" + message.sendingUid); 6811 replyToMessage(message, message.what, FAILURE); 6812 break; 6813 } 6814 6815 ok = mWifiConfigStore.removeNetwork(message.arg1); 6816 if (!ok) { 6817 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6818 } 6819 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6820 break; 6821 case CMD_ENABLE_NETWORK: 6822 boolean others = message.arg2 == 1; 6823 // Tell autojoin the user did try to select to that network 6824 // However, do NOT persist the choice by bumping the priority of the network 6825 if (others) { 6826 mWifiAutoJoinController. 6827 updateConfigurationHistory(message.arg1, true, false); 6828 // Set the last selected configuration so as to allow the system to 6829 // stick the last user choice without persisting the choice 6830 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6831 6832 // Remember time of last connection attempt 6833 lastConnectAttempt = System.currentTimeMillis(); 6834 6835 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6836 } 6837 // Cancel auto roam requests 6838 autoRoamSetBSSID(message.arg1, "any"); 6839 6840 int uid = message.sendingUid; 6841 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1, uid); 6842 if (!ok) { 6843 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6844 } 6845 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6846 break; 6847 case CMD_ENABLE_ALL_NETWORKS: 6848 long time = android.os.SystemClock.elapsedRealtime(); 6849 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6850 mWifiConfigStore.enableAllNetworks(); 6851 mLastEnableAllNetworksTime = time; 6852 } 6853 break; 6854 case WifiManager.DISABLE_NETWORK: 6855 if (mWifiConfigStore.disableNetwork(message.arg1, 6856 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6857 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6858 } else { 6859 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6860 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6861 WifiManager.ERROR); 6862 } 6863 break; 6864 case CMD_DISABLE_EPHEMERAL_NETWORK: 6865 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6866 if (config != null) { 6867 if (config.networkId == mLastNetworkId) { 6868 // Disconnect and let autojoin reselect a new network 6869 sendMessage(CMD_DISCONNECT); 6870 } 6871 } 6872 break; 6873 case CMD_BLACKLIST_NETWORK: 6874 mWifiNative.addToBlacklist((String) message.obj); 6875 break; 6876 case CMD_CLEAR_BLACKLIST: 6877 mWifiNative.clearBlacklist(); 6878 break; 6879 case CMD_SAVE_CONFIG: 6880 ok = mWifiConfigStore.saveConfig(); 6881 6882 if (DBG) loge("wifistatemachine did save config " + ok); 6883 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6884 6885 // Inform the backup manager about a data change 6886 IBackupManager ibm = IBackupManager.Stub.asInterface( 6887 ServiceManager.getService(Context.BACKUP_SERVICE)); 6888 if (ibm != null) { 6889 try { 6890 ibm.dataChanged("com.android.providers.settings"); 6891 } catch (Exception e) { 6892 // Try again later 6893 } 6894 } 6895 break; 6896 case CMD_GET_CONFIGURED_NETWORKS: 6897 replyToMessage(message, message.what, 6898 mWifiConfigStore.getConfiguredNetworks()); 6899 break; 6900 case WifiMonitor.SUP_REQUEST_IDENTITY: 6901 int networkId = message.arg2; 6902 boolean identitySent = false; 6903 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 6904 6905 if (targetWificonfiguration != null 6906 && targetWificonfiguration.enterpriseConfig != null) { 6907 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 6908 } 6909 6910 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 6911 if (targetWificonfiguration != null 6912 && targetWificonfiguration.networkId == networkId 6913 && targetWificonfiguration.allowedKeyManagement 6914 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 6915 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 6916 || eapMethod == WifiEnterpriseConfig.Eap.AKA 6917 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 6918 TelephonyManager tm = (TelephonyManager) 6919 mContext.getSystemService(Context.TELEPHONY_SERVICE); 6920 if (tm != null) { 6921 String imsi = tm.getSubscriberId(); 6922 String mccMnc = ""; 6923 6924 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 6925 mccMnc = tm.getSimOperator(); 6926 6927 String identity = buildIdentity(eapMethod, imsi, mccMnc); 6928 6929 if (!identity.isEmpty()) { 6930 mWifiNative.simIdentityResponse(networkId, identity); 6931 identitySent = true; 6932 } 6933 } 6934 } 6935 if (!identitySent) { 6936 // Supplicant lacks credentials to connect to that network, hence black list 6937 ssid = (String) message.obj; 6938 if (targetWificonfiguration != null && ssid != null 6939 && targetWificonfiguration.SSID != null 6940 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6941 mWifiConfigStore.handleSSIDStateChange( 6942 targetWificonfiguration.networkId, false, 6943 "AUTH_FAILED no identity", null); 6944 } 6945 // Disconnect now, as we don't have any way to fullfill 6946 // the supplicant request. 6947 mWifiConfigStore.setLastSelectedConfiguration( 6948 WifiConfiguration.INVALID_NETWORK_ID); 6949 mWifiNative.disconnect(); 6950 } 6951 break; 6952 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6953 logd("Received SUP_REQUEST_SIM_AUTH"); 6954 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6955 if (requestData != null) { 6956 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6957 handleGsmAuthRequest(requestData); 6958 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 6959 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 6960 handle3GAuthRequest(requestData); 6961 } 6962 } else { 6963 loge("Invalid sim auth request"); 6964 } 6965 break; 6966 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6967 replyToMessage(message, message.what, 6968 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6969 break; 6970 case CMD_GET_MATCHING_CONFIG: 6971 replyToMessage(message, message.what, 6972 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 6973 break; 6974 /* Do a redundant disconnect without transition */ 6975 case CMD_DISCONNECT: 6976 mWifiConfigStore.setLastSelectedConfiguration 6977 (WifiConfiguration.INVALID_NETWORK_ID); 6978 mWifiNative.disconnect(); 6979 break; 6980 case CMD_RECONNECT: 6981 mWifiAutoJoinController.attemptAutoJoin(); 6982 break; 6983 case CMD_REASSOCIATE: 6984 lastConnectAttempt = System.currentTimeMillis(); 6985 mWifiNative.reassociate(); 6986 break; 6987 case CMD_RELOAD_TLS_AND_RECONNECT: 6988 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6989 logd("Reconnecting to give a chance to un-connected TLS networks"); 6990 mWifiNative.disconnect(); 6991 lastConnectAttempt = System.currentTimeMillis(); 6992 mWifiNative.reconnect(); 6993 } 6994 break; 6995 case CMD_AUTO_ROAM: 6996 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6997 return HANDLED; 6998 case CMD_AUTO_CONNECT: 6999 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7000 * associated status to the STATUS command but somehow-someplace still thinks 7001 * it is associated and thus will ignore select/reconnect command with 7002 * following message: 7003 * "Already associated with the selected network - do nothing" 7004 * 7005 * Hence, sends a disconnect to supplicant first. 7006 */ 7007 didDisconnect = false; 7008 if (getCurrentState() != mDisconnectedState) { 7009 /** Supplicant will ignore the reconnect if we are currently associated, 7010 * hence trigger a disconnect 7011 */ 7012 didDisconnect = true; 7013 mWifiNative.disconnect(); 7014 } 7015 7016 /* connect command coming from auto-join */ 7017 config = (WifiConfiguration) message.obj; 7018 netId = message.arg1; 7019 int roam = message.arg2; 7020 loge("CMD_AUTO_CONNECT sup state " 7021 + mSupplicantStateTracker.getSupplicantStateName() 7022 + " my state " + getCurrentState().getName() 7023 + " nid=" + Integer.toString(netId) 7024 + " roam=" + Integer.toString(roam)); 7025 if (config == null) { 7026 loge("AUTO_CONNECT and no config, bail out..."); 7027 break; 7028 } 7029 7030 /* Make sure we cancel any previous roam request */ 7031 autoRoamSetBSSID(netId, config.BSSID); 7032 7033 /* Save the network config */ 7034 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 7035 + " nid=" + Integer.toString(netId)); 7036 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7037 netId = result.getNetworkId(); 7038 loge("CMD_AUTO_CONNECT did save config -> " 7039 + " nid=" + Integer.toString(netId)); 7040 7041 if (deferForUserInput(message, netId, false)) { 7042 break; 7043 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7044 WifiConfiguration.USER_BANNED) { 7045 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7046 WifiManager.NOT_AUTHORIZED); 7047 break; 7048 } 7049 7050 // Make sure the network is enabled, since supplicant will not reenable it 7051 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7052 7053 // If we're autojoining a network that the user or an app explicitly selected, 7054 // keep track of the UID that selected it. 7055 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7056 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7057 7058 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7059 lastConnectUid) && mWifiNative.reconnect()) { 7060 lastConnectAttempt = System.currentTimeMillis(); 7061 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7062 config = mWifiConfigStore.getWifiConfiguration(netId); 7063 if (config != null 7064 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7065 // If we autojoined a different config than the user selected one, 7066 // it means we could not see the last user selection, 7067 // or that the last user selection was faulty and ended up blacklisted 7068 // for some reason (in which case the user is notified with an error 7069 // message in the Wifi picker), and thus we managed to auto-join away 7070 // from the selected config. -> in that case we need to forget 7071 // the selection because we don't want to abruptly switch back to it. 7072 // 7073 // Note that the user selection is also forgotten after a period of time 7074 // during which the device has been disconnected. 7075 // The default value is 30 minutes : see the code path at bottom of 7076 // setScanResults() function. 7077 mWifiConfigStore. 7078 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7079 } 7080 mAutoRoaming = roam; 7081 if (isRoaming() || linkDebouncing) { 7082 transitionTo(mRoamingState); 7083 } else if (didDisconnect) { 7084 transitionTo(mDisconnectingState); 7085 } else { 7086 /* Already in disconnected state, nothing to change */ 7087 } 7088 } else { 7089 loge("Failed to connect config: " + config + " netId: " + netId); 7090 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7091 WifiManager.ERROR); 7092 break; 7093 } 7094 break; 7095 case CMD_REMOVE_APP_CONFIGURATIONS: 7096 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7097 break; 7098 case CMD_REMOVE_USER_CONFIGURATIONS: 7099 mWifiConfigStore.removeNetworksForUser(message.arg1); 7100 break; 7101 case WifiManager.CONNECT_NETWORK: 7102 /** 7103 * The connect message can contain a network id passed as arg1 on message or 7104 * or a config passed as obj on message. 7105 * For a new network, a config is passed to create and connect. 7106 * For an existing network, a network id is passed 7107 */ 7108 netId = message.arg1; 7109 config = (WifiConfiguration) message.obj; 7110 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7111 boolean updatedExisting = false; 7112 7113 /* Save the network config */ 7114 if (config != null) { 7115 if (!recordUidIfAuthorized(config, message.sendingUid)) { 7116 loge("Not authorized to update network " 7117 + " config=" + config.SSID 7118 + " cnid=" + config.networkId 7119 + " uid=" + message.sendingUid); 7120 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7121 WifiManager.NOT_AUTHORIZED); 7122 break; 7123 } 7124 7125 String configKey = config.configKey(true /* allowCached */); 7126 WifiConfiguration savedConfig = 7127 mWifiConfigStore.getWifiConfiguration(configKey); 7128 if (savedConfig != null) { 7129 // There is an existing config with this netId, but it wasn't exposed 7130 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7131 // getConfiguredNetworks). Remove those bits and update the config. 7132 config = savedConfig; 7133 loge("CONNECT_NETWORK updating existing config with id=" + 7134 config.networkId + " configKey=" + configKey); 7135 config.ephemeral = false; 7136 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7137 updatedExisting = true; 7138 } 7139 7140 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7141 netId = result.getNetworkId(); 7142 } 7143 config = mWifiConfigStore.getWifiConfiguration(netId); 7144 7145 if (config == null) { 7146 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7147 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7148 + getCurrentState().getName()); 7149 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7150 WifiManager.ERROR); 7151 break; 7152 } else { 7153 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7154 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 7155 + " config=" + config.SSID 7156 + " cnid=" + config.networkId 7157 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7158 + " my state " + getCurrentState().getName() 7159 + " uid = " + message.sendingUid 7160 + wasSkipped); 7161 } 7162 7163 autoRoamSetBSSID(netId, "any"); 7164 7165 if (message.sendingUid == Process.WIFI_UID 7166 || message.sendingUid == Process.SYSTEM_UID) { 7167 // As a sanity measure, clear the BSSID in the supplicant network block. 7168 // If system or Wifi Settings want to connect, they will not 7169 // specify the BSSID. 7170 // If an app however had added a BSSID to this configuration, and the BSSID 7171 // was wrong, Then we would forever fail to connect until that BSSID 7172 // is cleaned up. 7173 clearConfigBSSID(config, "CONNECT_NETWORK"); 7174 } 7175 7176 if (deferForUserInput(message, netId, true)) { 7177 break; 7178 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7179 WifiConfiguration.USER_BANNED) { 7180 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7181 WifiManager.NOT_AUTHORIZED); 7182 break; 7183 } 7184 7185 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7186 7187 /* Tell autojoin the user did try to connect to that network if from settings */ 7188 boolean persist = 7189 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7190 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7191 7192 mWifiConfigStore.setLastSelectedConfiguration(netId); 7193 7194 didDisconnect = false; 7195 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7196 && mLastNetworkId != netId) { 7197 /** Supplicant will ignore the reconnect if we are currently associated, 7198 * hence trigger a disconnect 7199 */ 7200 didDisconnect = true; 7201 mWifiNative.disconnect(); 7202 } 7203 7204 // Make sure the network is enabled, since supplicant will not reenable it 7205 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7206 7207 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7208 message.sendingUid) && mWifiNative.reconnect()) { 7209 lastConnectAttempt = System.currentTimeMillis(); 7210 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7211 7212 /* The state tracker handles enabling networks upon completion/failure */ 7213 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7214 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7215 if (didDisconnect) { 7216 /* Expect a disconnection from the old connection */ 7217 transitionTo(mDisconnectingState); 7218 } else if (updatedExisting && getCurrentState() == mConnectedState && 7219 getCurrentWifiConfiguration().networkId == netId) { 7220 // Update the current set of network capabilities, but stay in the 7221 // current state. 7222 updateCapabilities(config); 7223 } else { 7224 /** 7225 * Directly go to disconnected state where we 7226 * process the connection events from supplicant 7227 **/ 7228 transitionTo(mDisconnectedState); 7229 } 7230 } else { 7231 loge("Failed to connect config: " + config + " netId: " + netId); 7232 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7233 WifiManager.ERROR); 7234 break; 7235 } 7236 break; 7237 case WifiManager.SAVE_NETWORK: 7238 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7239 // Fall thru 7240 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7241 lastSavedConfigurationAttempt = null; // Used for debug 7242 config = (WifiConfiguration) message.obj; 7243 if (config == null) { 7244 loge("ERROR: SAVE_NETWORK with null configuration" 7245 + mSupplicantStateTracker.getSupplicantStateName() 7246 + " my state " + getCurrentState().getName()); 7247 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7248 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7249 WifiManager.ERROR); 7250 break; 7251 } 7252 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7253 int nid = config.networkId; 7254 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7255 + " config=" + config.SSID 7256 + " nid=" + config.networkId 7257 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7258 + " my state " + getCurrentState().getName()); 7259 7260 // Only record the uid if this is user initiated 7261 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7262 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid)) { 7263 loge("Not authorized to update network " 7264 + " config=" + config.SSID 7265 + " cnid=" + config.networkId 7266 + " uid=" + message.sendingUid); 7267 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7268 WifiManager.NOT_AUTHORIZED); 7269 break; 7270 } 7271 7272 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7273 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7274 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7275 if (result.hasIpChanged()) { 7276 // The currently connection configuration was changed 7277 // We switched from DHCP to static or from static to DHCP, or the 7278 // static IP address has changed. 7279 log("Reconfiguring IP on connection"); 7280 // TODO: clear addresses and disable IPv6 7281 // to simplify obtainingIpState. 7282 transitionTo(mObtainingIpState); 7283 } 7284 if (result.hasProxyChanged()) { 7285 log("Reconfiguring proxy on connection"); 7286 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7287 } 7288 } 7289 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7290 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7291 7292 if (VDBG) { 7293 loge("Success save network nid=" 7294 + Integer.toString(result.getNetworkId())); 7295 } 7296 7297 synchronized(mScanResultCache) { 7298 /** 7299 * If the command comes from WifiManager, then 7300 * tell autojoin the user did try to modify and save that network, 7301 * and interpret the SAVE_NETWORK as a request to connect 7302 */ 7303 boolean user = message.what == WifiManager.SAVE_NETWORK; 7304 7305 // Did this connect come from settings 7306 boolean persistConnect = 7307 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7308 7309 if (user) { 7310 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7311 mWifiConfigStore.writeKnownNetworkHistory(false); 7312 } 7313 7314 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7315 , user, persistConnect); 7316 mWifiAutoJoinController.attemptAutoJoin(); 7317 } 7318 } else { 7319 loge("Failed to save network"); 7320 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7321 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7322 WifiManager.ERROR); 7323 } 7324 break; 7325 case WifiManager.FORGET_NETWORK: 7326 // Debug only, remember last configuration that was forgotten 7327 WifiConfiguration toRemove 7328 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7329 if (toRemove == null) { 7330 lastForgetConfigurationAttempt = null; 7331 } else { 7332 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7333 } 7334 // check that the caller owns this network 7335 netId = message.arg1; 7336 7337 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 7338 loge("Not authorized to forget network " 7339 + " cnid=" + netId 7340 + " uid=" + message.sendingUid); 7341 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7342 WifiManager.NOT_AUTHORIZED); 7343 break; 7344 } 7345 7346 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7347 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7348 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7349 (WifiConfiguration) message.obj); 7350 } else { 7351 loge("Failed to forget network"); 7352 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7353 WifiManager.ERROR); 7354 } 7355 break; 7356 case WifiManager.START_WPS: 7357 WpsInfo wpsInfo = (WpsInfo) message.obj; 7358 WpsResult wpsResult; 7359 switch (wpsInfo.setup) { 7360 case WpsInfo.PBC: 7361 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7362 break; 7363 case WpsInfo.KEYPAD: 7364 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7365 break; 7366 case WpsInfo.DISPLAY: 7367 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7368 break; 7369 default: 7370 wpsResult = new WpsResult(Status.FAILURE); 7371 loge("Invalid setup for WPS"); 7372 break; 7373 } 7374 mWifiConfigStore.setLastSelectedConfiguration 7375 (WifiConfiguration.INVALID_NETWORK_ID); 7376 if (wpsResult.status == Status.SUCCESS) { 7377 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7378 transitionTo(mWpsRunningState); 7379 } else { 7380 loge("Failed to start WPS with config " + wpsInfo.toString()); 7381 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7382 } 7383 break; 7384 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7385 if (DBG) log("Network connection established"); 7386 mLastNetworkId = message.arg1; 7387 mLastBssid = (String) message.obj; 7388 7389 mWifiInfo.setBSSID(mLastBssid); 7390 mWifiInfo.setNetworkId(mLastNetworkId); 7391 7392 sendNetworkStateChangeBroadcast(mLastBssid); 7393 transitionTo(mObtainingIpState); 7394 break; 7395 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7396 // Calling handleNetworkDisconnect here is redundant because we might already 7397 // have called it when leaving L2ConnectedState to go to disconnecting state 7398 // or thru other path 7399 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7400 // if they are valid, and only in this case call handleNEtworkDisconnect, 7401 // TODO: this should be fixed for a L MR release 7402 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7403 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7404 // at the chip etc... 7405 if (DBG) log("ConnectModeState: Network connection lost "); 7406 handleNetworkDisconnect(); 7407 transitionTo(mDisconnectedState); 7408 break; 7409 case CMD_PNO_NETWORK_FOUND: 7410 processPnoNetworkFound((ScanResult[])message.obj); 7411 break; 7412 default: 7413 return NOT_HANDLED; 7414 } 7415 return HANDLED; 7416 } 7417 } 7418 7419 private void updateCapabilities(WifiConfiguration config) { 7420 if (config.ephemeral) { 7421 mNetworkCapabilities.removeCapability( 7422 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7423 } else { 7424 mNetworkCapabilities.addCapability( 7425 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7426 } 7427 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7428 } 7429 7430 private class WifiNetworkAgent extends NetworkAgent { 7431 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7432 NetworkCapabilities nc, LinkProperties lp, int score) { 7433 super(l, c, TAG, ni, nc, lp, score); 7434 } 7435 protected void unwanted() { 7436 // Ignore if we're not the current networkAgent. 7437 if (this != mNetworkAgent) return; 7438 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7439 + Integer.toString(mWifiInfo.score)); 7440 unwantedNetwork(network_status_unwanted_disconnect); 7441 } 7442 7443 @Override 7444 protected void networkStatus(int status) { 7445 if (this != mNetworkAgent) return; 7446 if (status == NetworkAgent.INVALID_NETWORK) { 7447 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7448 + Integer.toString(mWifiInfo.score)); 7449 unwantedNetwork(network_status_unwanted_disable_autojoin); 7450 } else if (status == NetworkAgent.VALID_NETWORK) { 7451 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7452 + Integer.toString(mWifiInfo.score)); 7453 doNetworkStatus(status); 7454 } 7455 } 7456 7457 @Override 7458 protected void saveAcceptUnvalidated(boolean accept) { 7459 if (this != mNetworkAgent) return; 7460 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7461 } 7462 } 7463 7464 void unwantedNetwork(int reason) { 7465 sendMessage(CMD_UNWANTED_NETWORK, reason); 7466 } 7467 7468 void doNetworkStatus(int status) { 7469 sendMessage(CMD_NETWORK_STATUS, status); 7470 } 7471 7472 // rfc4186 & rfc4187: 7473 // create Permanent Identity base on IMSI, 7474 // identity = usernam@realm 7475 // with username = prefix | IMSI 7476 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7477 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7478 String mcc; 7479 String mnc; 7480 String prefix; 7481 7482 if (imsi == null || imsi.isEmpty()) 7483 return ""; 7484 7485 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7486 prefix = "1"; 7487 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7488 prefix = "0"; 7489 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7490 prefix = "6"; 7491 else // not a valide EapMethod 7492 return ""; 7493 7494 /* extract mcc & mnc from mccMnc */ 7495 if (mccMnc != null && !mccMnc.isEmpty()) { 7496 mcc = mccMnc.substring(0, 3); 7497 mnc = mccMnc.substring(3); 7498 if (mnc.length() == 2) 7499 mnc = "0" + mnc; 7500 } else { 7501 // extract mcc & mnc from IMSI, assume mnc size is 3 7502 mcc = imsi.substring(0, 3); 7503 mnc = imsi.substring(3, 6); 7504 } 7505 7506 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7507 } 7508 7509 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7510 if (config == null) 7511 return false; 7512 7513 // We are still seeing a fairly high power consumption triggered by autojoin scans 7514 // Hence do partial scans only for PSK configuration that are roamable since the 7515 // primary purpose of the partial scans is roaming. 7516 // Full badn scans with exponential backoff for the purpose or extended roaming and 7517 // network switching are performed unconditionally. 7518 ScanDetailCache scanDetailCache = 7519 mWifiConfigStore.getScanDetailCache(config); 7520 if (scanDetailCache == null 7521 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7522 || scanDetailCache.size() > 6) { 7523 //return true but to not trigger the scan 7524 return true; 7525 } 7526 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7527 ONE_HOUR_MILLI, restrictChannelList); 7528 if (channels != null && channels.size() != 0) { 7529 StringBuilder freqs = new StringBuilder(); 7530 boolean first = true; 7531 for (Integer channel : channels) { 7532 if (!first) 7533 freqs.append(","); 7534 freqs.append(channel.toString()); 7535 first = false; 7536 } 7537 //if (DBG) { 7538 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7539 //} 7540 // Call wifi native to start the scan 7541 if (startScanNative( 7542 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7543 freqs.toString())) { 7544 // Only count battery consumption if scan request is accepted 7545 noteScanStart(SCAN_ALARM_SOURCE, null); 7546 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7547 } else { 7548 // used for debug only, mark scan as failed 7549 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7550 } 7551 return true; 7552 } else { 7553 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7554 return false; 7555 } 7556 } 7557 7558 void clearCurrentConfigBSSID(String dbg) { 7559 // Clear the bssid in the current config's network block 7560 WifiConfiguration config = getCurrentWifiConfiguration(); 7561 if (config == null) 7562 return; 7563 clearConfigBSSID(config, dbg); 7564 } 7565 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7566 if (config == null) 7567 return; 7568 if (DBG) { 7569 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7570 + " config.bssid " + config.BSSID); 7571 } 7572 config.autoJoinBSSID = "any"; 7573 config.BSSID = "any"; 7574 if (DBG) { 7575 loge(dbg + " " + config.SSID 7576 + " nid=" + Integer.toString(config.networkId)); 7577 } 7578 mWifiConfigStore.saveWifiConfigBSSID(config); 7579 } 7580 7581 class L2ConnectedState extends State { 7582 @Override 7583 public void enter() { 7584 mRssiPollToken++; 7585 if (mEnableRssiPolling) { 7586 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7587 } 7588 if (mNetworkAgent != null) { 7589 loge("Have NetworkAgent when entering L2Connected"); 7590 setNetworkDetailedState(DetailedState.DISCONNECTED); 7591 } 7592 setNetworkDetailedState(DetailedState.CONNECTING); 7593 7594 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 7595 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7596 } 7597 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7598 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7599 mLinkProperties, 60); 7600 7601 // We must clear the config BSSID, as the wifi chipset may decide to roam 7602 // from this point on and having the BSSID specified in the network block would 7603 // cause the roam to faile and the device to disconnect 7604 clearCurrentConfigBSSID("L2ConnectedState"); 7605 7606 try { 7607 mIpReachabilityMonitor = new IpReachabilityMonitor( 7608 mInterfaceName, 7609 new IpReachabilityMonitor.Callback() { 7610 @Override 7611 public void notifyLost(InetAddress ip, String logMsg) { 7612 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 7613 } 7614 }); 7615 } catch (IllegalArgumentException e) { 7616 Log.wtf("Failed to create IpReachabilityMonitor", e); 7617 } 7618 } 7619 7620 @Override 7621 public void exit() { 7622 if (mIpReachabilityMonitor != null) { 7623 mIpReachabilityMonitor.stop(); 7624 mIpReachabilityMonitor = null; 7625 } 7626 7627 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7628 // Bug: 15347363 7629 // For paranoia's sake, call handleNetworkDisconnect 7630 // only if BSSID is null or last networkId 7631 // is not invalid. 7632 if (DBG) { 7633 StringBuilder sb = new StringBuilder(); 7634 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7635 if (mLastBssid !=null) { 7636 sb.append(" ").append(mLastBssid); 7637 } 7638 } 7639 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7640 handleNetworkDisconnect(); 7641 } 7642 } 7643 7644 @Override 7645 public boolean processMessage(Message message) { 7646 logStateAndMessage(message, getClass().getSimpleName()); 7647 7648 switch (message.what) { 7649 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7650 handlePreDhcpSetup(); 7651 break; 7652 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7653 handlePostDhcpSetup(); 7654 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7655 if (DBG) log("WifiStateMachine DHCP successful"); 7656 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7657 // We advance to mVerifyingLinkState because handleIPv4Success will call 7658 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7659 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7660 if (DBG) { 7661 int count = -1; 7662 WifiConfiguration config = getCurrentWifiConfiguration(); 7663 if (config != null) { 7664 count = config.numConnectionFailures; 7665 } 7666 log("WifiStateMachine DHCP failure count=" + count); 7667 } 7668 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7669 // As above, we transition to mDisconnectingState via updateLinkProperties. 7670 } 7671 break; 7672 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7673 handleSuccessfulIpConfiguration(); 7674 sendConnectedState(); 7675 transitionTo(mConnectedState); 7676 break; 7677 case CMD_IP_CONFIGURATION_LOST: 7678 // Get Link layer stats so that we get fresh tx packet counters. 7679 getWifiLinkLayerStats(true); 7680 handleIpConfigurationLost(); 7681 transitionTo(mDisconnectingState); 7682 break; 7683 case CMD_IP_REACHABILITY_LOST: 7684 if (DBG && message.obj != null) log((String) message.obj); 7685 handleIpReachabilityLost(); 7686 transitionTo(mDisconnectingState); 7687 break; 7688 case CMD_DISCONNECT: 7689 mWifiNative.disconnect(); 7690 transitionTo(mDisconnectingState); 7691 break; 7692 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7693 if (message.arg1 == 1) { 7694 mWifiNative.disconnect(); 7695 mTemporarilyDisconnectWifi = true; 7696 transitionTo(mDisconnectingState); 7697 } 7698 break; 7699 case CMD_SET_OPERATIONAL_MODE: 7700 if (message.arg1 != CONNECT_MODE) { 7701 sendMessage(CMD_DISCONNECT); 7702 deferMessage(message); 7703 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7704 noteWifiDisabledWhileAssociated(); 7705 } 7706 } 7707 mWifiConfigStore. 7708 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7709 break; 7710 case CMD_SET_COUNTRY_CODE: 7711 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7712 deferMessage(message); 7713 break; 7714 case CMD_START_SCAN: 7715 //if (DBG) { 7716 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7717 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7718 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7719 + " targetRoamBSSID=" + mTargetRoamBSSID 7720 + " RSSI=" + mWifiInfo.getRssi()); 7721 //} 7722 if (message.arg1 == SCAN_ALARM_SOURCE) { 7723 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7724 // not be processed) and restart the scan if needed 7725 boolean shouldScan = 7726 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7727 if (!checkAndRestartDelayedScan(message.arg2, 7728 shouldScan, 7729 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 7730 null, null)) { 7731 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7732 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7733 + message.arg1 7734 + " " + message.arg2 + ", " + mDelayedScanCounter 7735 + " -> obsolete"); 7736 return HANDLED; 7737 } 7738 if (mP2pConnected.get()) { 7739 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7740 + message.arg1 7741 + " " + message.arg2 + ", " + mDelayedScanCounter 7742 + " ignore because P2P is connected"); 7743 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7744 return HANDLED; 7745 } 7746 boolean tryFullBandScan = false; 7747 boolean restrictChannelList = false; 7748 long now_ms = System.currentTimeMillis(); 7749 if (DBG) { 7750 loge("WifiStateMachine CMD_START_SCAN with age=" 7751 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7752 + " interval=" + fullBandConnectedTimeIntervalMilli 7753 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7754 } 7755 if (mWifiInfo != null) { 7756 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7757 (now_ms - lastFullBandConnectedTimeMilli) 7758 > fullBandConnectedTimeIntervalMilli) { 7759 if (DBG) { 7760 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7761 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7762 + " interval=" + fullBandConnectedTimeIntervalMilli 7763 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7764 } 7765 tryFullBandScan = true; 7766 } 7767 7768 if (mWifiInfo.txSuccessRate > 7769 mWifiConfigStore.maxTxPacketForFullScans 7770 || mWifiInfo.rxSuccessRate > 7771 mWifiConfigStore.maxRxPacketForFullScans) { 7772 // Too much traffic at the interface, hence no full band scan 7773 if (DBG) { 7774 loge("WifiStateMachine CMD_START_SCAN " + 7775 "prevent full band scan due to pkt rate"); 7776 } 7777 tryFullBandScan = false; 7778 } 7779 7780 if (mWifiInfo.txSuccessRate > 7781 mWifiConfigStore.maxTxPacketForPartialScans 7782 || mWifiInfo.rxSuccessRate > 7783 mWifiConfigStore.maxRxPacketForPartialScans) { 7784 // Don't scan if lots of packets are being sent 7785 restrictChannelList = true; 7786 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7787 if (DBG) { 7788 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7789 + " ...and ignore scans" 7790 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7791 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7792 } 7793 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7794 return HANDLED; 7795 } 7796 } 7797 } 7798 7799 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7800 if (DBG) { 7801 loge("WifiStateMachine CMD_START_SCAN full=" + 7802 tryFullBandScan); 7803 } 7804 if (currentConfiguration != null) { 7805 if (fullBandConnectedTimeIntervalMilli 7806 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 7807 // Sanity 7808 fullBandConnectedTimeIntervalMilli 7809 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 7810 } 7811 if (tryFullBandScan) { 7812 lastFullBandConnectedTimeMilli = now_ms; 7813 if (fullBandConnectedTimeIntervalMilli 7814 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7815 // Increase the interval 7816 fullBandConnectedTimeIntervalMilli 7817 = fullBandConnectedTimeIntervalMilli 7818 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7819 7820 if (DBG) { 7821 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7822 + fullBandConnectedTimeIntervalMilli); 7823 } 7824 } 7825 handleScanRequest( 7826 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7827 } else { 7828 if (!startScanForConfiguration( 7829 currentConfiguration, restrictChannelList)) { 7830 if (DBG) { 7831 loge("WifiStateMachine starting scan, " + 7832 " did not find channels -> full"); 7833 } 7834 lastFullBandConnectedTimeMilli = now_ms; 7835 if (fullBandConnectedTimeIntervalMilli 7836 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7837 // Increase the interval 7838 fullBandConnectedTimeIntervalMilli 7839 = fullBandConnectedTimeIntervalMilli 7840 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7841 7842 if (DBG) { 7843 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7844 + fullBandConnectedTimeIntervalMilli); 7845 } 7846 } 7847 handleScanRequest( 7848 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7849 } 7850 } 7851 7852 } else { 7853 loge("CMD_START_SCAN : connected mode and no configuration"); 7854 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7855 } 7856 } else { 7857 // Not scan alarm source 7858 return NOT_HANDLED; 7859 } 7860 break; 7861 /* Ignore connection to same network */ 7862 case WifiManager.CONNECT_NETWORK: 7863 int netId = message.arg1; 7864 if (mWifiInfo.getNetworkId() == netId) { 7865 break; 7866 } 7867 return NOT_HANDLED; 7868 /* Ignore */ 7869 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7870 break; 7871 case CMD_RSSI_POLL: 7872 if (message.arg1 == mRssiPollToken) { 7873 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7874 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7875 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7876 if (stats != null) { 7877 // Sanity check the results provided by driver 7878 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7879 && (stats.rssi_mgmt == 0 7880 || stats.beacon_rx == 0)) { 7881 stats = null; 7882 } 7883 } 7884 // Get Info and continue polling 7885 fetchRssiLinkSpeedAndFrequencyNative(); 7886 calculateWifiScore(stats); 7887 } 7888 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7889 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7890 7891 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7892 } else { 7893 // Polling has completed 7894 } 7895 break; 7896 case CMD_ENABLE_RSSI_POLL: 7897 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7898 mEnableRssiPolling = (message.arg1 == 1); 7899 } else { 7900 mEnableRssiPolling = false; 7901 } 7902 mRssiPollToken++; 7903 if (mEnableRssiPolling) { 7904 // First poll 7905 fetchRssiLinkSpeedAndFrequencyNative(); 7906 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7907 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7908 } else { 7909 cleanWifiScore(); 7910 } 7911 break; 7912 case WifiManager.RSSI_PKTCNT_FETCH: 7913 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7914 fetchRssiLinkSpeedAndFrequencyNative(); 7915 info.rssi = mWifiInfo.getRssi(); 7916 fetchPktcntNative(info); 7917 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7918 break; 7919 case CMD_DELAYED_NETWORK_DISCONNECT: 7920 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7921 7922 // Ignore if we are not debouncing 7923 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7924 + message.arg1); 7925 return HANDLED; 7926 } else { 7927 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7928 + message.arg1); 7929 7930 linkDebouncing = false; 7931 // If we are still debouncing while this message comes, 7932 // it means we were not able to reconnect within the alloted time 7933 // = LINK_FLAPPING_DEBOUNCE_MSEC 7934 // and thus, trigger a real disconnect 7935 handleNetworkDisconnect(); 7936 transitionTo(mDisconnectedState); 7937 } 7938 break; 7939 case CMD_ASSOCIATED_BSSID: 7940 if ((String) message.obj == null) { 7941 loge("Associated command w/o BSSID"); 7942 break; 7943 } 7944 mLastBssid = (String) message.obj; 7945 if (mLastBssid != null 7946 && (mWifiInfo.getBSSID() == null 7947 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7948 mWifiInfo.setBSSID((String) message.obj); 7949 sendNetworkStateChangeBroadcast(mLastBssid); 7950 } 7951 break; 7952 default: 7953 return NOT_HANDLED; 7954 } 7955 7956 return HANDLED; 7957 } 7958 } 7959 7960 class ObtainingIpState extends State { 7961 @Override 7962 public void enter() { 7963 if (DBG) { 7964 String key = ""; 7965 if (getCurrentWifiConfiguration() != null) { 7966 key = getCurrentWifiConfiguration().configKey(); 7967 } 7968 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7969 + " " + key + " " 7970 + " roam=" + mAutoRoaming 7971 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7972 + " watchdog= " + obtainingIpWatchdogCount); 7973 } 7974 7975 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7976 // We might still be roaming 7977 linkDebouncing = false; 7978 7979 // Send event to CM & network change broadcast 7980 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7981 7982 // We must clear the config BSSID, as the wifi chipset may decide to roam 7983 // from this point on and having the BSSID specified in the network block would 7984 // cause the roam to faile and the device to disconnect 7985 clearCurrentConfigBSSID("ObtainingIpAddress"); 7986 7987 try { 7988 mNwService.enableIpv6(mInterfaceName); 7989 } catch (RemoteException re) { 7990 loge("Failed to enable IPv6: " + re); 7991 } catch (IllegalStateException e) { 7992 loge("Failed to enable IPv6: " + e); 7993 } 7994 7995 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7996 if (isRoaming()) { 7997 renewDhcp(); 7998 } else { 7999 // Remove any IP address on the interface in case we're switching from static 8000 // IP configuration to DHCP. This is safe because if we get here when not 8001 // roaming, we don't have a usable address. 8002 clearIPv4Address(mInterfaceName); 8003 startDhcp(); 8004 } 8005 obtainingIpWatchdogCount++; 8006 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8007 // Get Link layer stats so as we get fresh tx packet counters 8008 getWifiLinkLayerStats(true); 8009 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8010 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8011 } else { 8012 // stop any running dhcp before assigning static IP 8013 stopDhcp(); 8014 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8015 mLastNetworkId); 8016 if (config.ipAddress == null) { 8017 loge("Static IP lacks address"); 8018 sendMessage(CMD_STATIC_IP_FAILURE); 8019 } else { 8020 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8021 ifcg.setLinkAddress(config.ipAddress); 8022 ifcg.setInterfaceUp(); 8023 try { 8024 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8025 if (DBG) log("Static IP configuration succeeded"); 8026 DhcpResults dhcpResults = new DhcpResults(config); 8027 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8028 } catch (RemoteException re) { 8029 loge("Static IP configuration failed: " + re); 8030 sendMessage(CMD_STATIC_IP_FAILURE); 8031 } catch (IllegalStateException e) { 8032 loge("Static IP configuration failed: " + e); 8033 sendMessage(CMD_STATIC_IP_FAILURE); 8034 } 8035 } 8036 } 8037 } 8038 @Override 8039 public boolean processMessage(Message message) { 8040 logStateAndMessage(message, getClass().getSimpleName()); 8041 8042 switch(message.what) { 8043 case CMD_STATIC_IP_SUCCESS: 8044 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8045 break; 8046 case CMD_STATIC_IP_FAILURE: 8047 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8048 break; 8049 case CMD_AUTO_CONNECT: 8050 case CMD_AUTO_ROAM: 8051 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8052 break; 8053 case WifiManager.SAVE_NETWORK: 8054 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8055 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8056 deferMessage(message); 8057 break; 8058 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8059 case CMD_SET_HIGH_PERF_MODE: 8060 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8061 deferMessage(message); 8062 break; 8063 /* Defer scan request since we should not switch to other channels at DHCP */ 8064 case CMD_START_SCAN: 8065 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8066 deferMessage(message); 8067 break; 8068 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8069 if (message.arg1 == obtainingIpWatchdogCount) { 8070 loge("ObtainingIpAddress: Watchdog Triggered, count=" 8071 + obtainingIpWatchdogCount); 8072 handleIpConfigurationLost(); 8073 transitionTo(mDisconnectingState); 8074 break; 8075 } 8076 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8077 break; 8078 default: 8079 return NOT_HANDLED; 8080 } 8081 return HANDLED; 8082 } 8083 } 8084 8085 class VerifyingLinkState extends State { 8086 @Override 8087 public void enter() { 8088 log(getName() + " enter"); 8089 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8090 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8091 sendNetworkStateChangeBroadcast(mLastBssid); 8092 // End roaming 8093 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8094 } 8095 @Override 8096 public boolean processMessage(Message message) { 8097 logStateAndMessage(message, getClass().getSimpleName()); 8098 8099 switch (message.what) { 8100 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8101 // Stay here 8102 log(getName() + " POOR_LINK_DETECTED: no transition"); 8103 break; 8104 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8105 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 8106 8107 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8108 sendConnectedState(); 8109 transitionTo(mConnectedState); 8110 break; 8111 default: 8112 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8113 return NOT_HANDLED; 8114 } 8115 return HANDLED; 8116 } 8117 } 8118 8119 private void sendConnectedState() { 8120 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 8121 // existing behaviour. The captive portal check really happens after we 8122 // transition into DetailedState.CONNECTED. 8123 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 8124 mWifiConfigStore.updateStatus(mLastNetworkId, 8125 DetailedState.CAPTIVE_PORTAL_CHECK); 8126 sendNetworkStateChangeBroadcast(mLastBssid); 8127 8128 // If this network was explicitly selected by the user, evaluate whether to call 8129 // explicitlySelected() so the system can treat it appropriately. 8130 WifiConfiguration config = getCurrentWifiConfiguration(); 8131 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8132 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8133 if (DBG) { 8134 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8135 } 8136 if (prompt) { 8137 // Selected by the user via Settings or QuickSettings. If this network has Internet 8138 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8139 // really want to switch, or has already confirmed and selected "Don't ask again". 8140 if (DBG) { 8141 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8142 } 8143 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8144 } 8145 } 8146 8147 setNetworkDetailedState(DetailedState.CONNECTED); 8148 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8149 sendNetworkStateChangeBroadcast(mLastBssid); 8150 } 8151 8152 class RoamingState extends State { 8153 boolean mAssociated; 8154 @Override 8155 public void enter() { 8156 if (DBG) { 8157 log("RoamingState Enter" 8158 + " mScreenOn=" + mScreenOn ); 8159 } 8160 setScanAlarm(false); 8161 8162 // Make sure we disconnect if roaming fails 8163 roamWatchdogCount++; 8164 loge("Start Roam Watchdog " + roamWatchdogCount); 8165 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8166 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8167 mAssociated = false; 8168 } 8169 @Override 8170 public boolean processMessage(Message message) { 8171 logStateAndMessage(message, getClass().getSimpleName()); 8172 WifiConfiguration config; 8173 switch (message.what) { 8174 case CMD_IP_CONFIGURATION_LOST: 8175 config = getCurrentWifiConfiguration(); 8176 if (config != null) { 8177 mWifiConfigStore.noteRoamingFailure(config, 8178 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8179 } 8180 return NOT_HANDLED; 8181 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8182 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8183 return HANDLED; 8184 case CMD_UNWANTED_NETWORK: 8185 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8186 return HANDLED; 8187 case CMD_SET_OPERATIONAL_MODE: 8188 if (message.arg1 != CONNECT_MODE) { 8189 deferMessage(message); 8190 } 8191 break; 8192 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8193 /** 8194 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8195 * before NETWORK_DISCONNECTION_EVENT 8196 * And there is an associated BSSID corresponding to our target BSSID, then 8197 * we have missed the network disconnection, transition to mDisconnectedState 8198 * and handle the rest of the events there. 8199 */ 8200 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8201 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8202 || stateChangeResult.state == SupplicantState.INACTIVE 8203 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8204 if (DBG) { 8205 log("STATE_CHANGE_EVENT in roaming state " 8206 + stateChangeResult.toString() ); 8207 } 8208 if (stateChangeResult.BSSID != null 8209 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8210 handleNetworkDisconnect(); 8211 transitionTo(mDisconnectedState); 8212 } 8213 } 8214 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8215 // We completed the layer2 roaming part 8216 mAssociated = true; 8217 if (stateChangeResult.BSSID != null) { 8218 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8219 } 8220 } 8221 break; 8222 case CMD_ROAM_WATCHDOG_TIMER: 8223 if (roamWatchdogCount == message.arg1) { 8224 if (DBG) log("roaming watchdog! -> disconnect"); 8225 mRoamFailCount++; 8226 handleNetworkDisconnect(); 8227 mWifiNative.disconnect(); 8228 transitionTo(mDisconnectedState); 8229 } 8230 break; 8231 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8232 if (mAssociated) { 8233 if (DBG) log("roaming and Network connection established"); 8234 mLastNetworkId = message.arg1; 8235 mLastBssid = (String) message.obj; 8236 mWifiInfo.setBSSID(mLastBssid); 8237 mWifiInfo.setNetworkId(mLastNetworkId); 8238 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8239 sendNetworkStateChangeBroadcast(mLastBssid); 8240 transitionTo(mObtainingIpState); 8241 } else { 8242 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8243 } 8244 break; 8245 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8246 // Throw away but only if it corresponds to the network we're roaming to 8247 String bssid = (String)message.obj; 8248 if (true) { 8249 String target = ""; 8250 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8251 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8252 + " BSSID=" + bssid 8253 + " target=" + target); 8254 } 8255 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8256 handleNetworkDisconnect(); 8257 transitionTo(mDisconnectedState); 8258 } 8259 break; 8260 case WifiMonitor.SSID_TEMP_DISABLED: 8261 // Auth error while roaming 8262 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8263 + " id=" + Integer.toString(message.arg1) 8264 + " isRoaming=" + isRoaming() 8265 + " roam=" + Integer.toString(mAutoRoaming)); 8266 if (message.arg1 == mLastNetworkId) { 8267 config = getCurrentWifiConfiguration(); 8268 if (config != null) { 8269 mWifiConfigStore.noteRoamingFailure(config, 8270 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8271 } 8272 handleNetworkDisconnect(); 8273 transitionTo(mDisconnectingState); 8274 } 8275 return NOT_HANDLED; 8276 case CMD_START_SCAN: 8277 deferMessage(message); 8278 break; 8279 default: 8280 return NOT_HANDLED; 8281 } 8282 return HANDLED; 8283 } 8284 8285 @Override 8286 public void exit() { 8287 loge("WifiStateMachine: Leaving Roaming state"); 8288 } 8289 } 8290 8291 class ConnectedState extends State { 8292 @Override 8293 public void enter() { 8294 String address; 8295 updateDefaultRouteMacAddress(1000); 8296 if (DBG) { 8297 log("Enter ConnectedState " 8298 + " mScreenOn=" + mScreenOn 8299 + " scanperiod=" 8300 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8301 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8302 + mWifiConfigStore.enableHalBasedPno.get()); 8303 8304 } 8305 configureLazyRoam(); 8306 if (mScreenOn 8307 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8308 if (useHalBasedAutoJoinOffload()) { 8309 startGScanConnectedModeOffload(); 8310 } else { 8311 // restart scan alarm 8312 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8313 null, null); 8314 } 8315 } 8316 registerConnected(); 8317 lastConnectAttempt = 0; 8318 targetWificonfiguration = null; 8319 // Paranoia 8320 linkDebouncing = false; 8321 8322 // Not roaming anymore 8323 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8324 8325 if (testNetworkDisconnect) { 8326 testNetworkDisconnectCounter++; 8327 loge("ConnectedState Enter start disconnect test " + 8328 testNetworkDisconnectCounter); 8329 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8330 testNetworkDisconnectCounter, 0), 15000); 8331 } 8332 8333 // Reenable all networks, allow for hidden networks to be scanned 8334 mWifiConfigStore.enableAllNetworks(); 8335 8336 mLastDriverRoamAttempt = 0; 8337 8338 //startLazyRoam(); 8339 } 8340 @Override 8341 public boolean processMessage(Message message) { 8342 WifiConfiguration config = null; 8343 logStateAndMessage(message, getClass().getSimpleName()); 8344 8345 switch (message.what) { 8346 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8347 /* If we are still in Disconnected state after having discovered a valid 8348 * network this means autojoin didnt managed to associate to the network, 8349 * then restart PNO so as we will try associating to it again. 8350 */ 8351 if (useHalBasedAutoJoinOffload()) { 8352 if (mGScanStartTimeMilli == 0) { 8353 // If offload is not started, then start it... 8354 startGScanConnectedModeOffload(); 8355 } else { 8356 // If offload is already started, then check if we need to increase 8357 // the scan period and restart the Gscan 8358 long now = System.currentTimeMillis(); 8359 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8360 && ((now - mGScanStartTimeMilli) 8361 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8362 && (mGScanPeriodMilli 8363 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8364 { 8365 startConnectedGScan(); 8366 } 8367 } 8368 } 8369 break; 8370 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8371 updateAssociatedScanPermission(); 8372 break; 8373 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8374 if (DBG) log("Watchdog reports poor link"); 8375 transitionTo(mVerifyingLinkState); 8376 break; 8377 case CMD_UNWANTED_NETWORK: 8378 if (message.arg1 == network_status_unwanted_disconnect) { 8379 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8380 mWifiNative.disconnect(); 8381 transitionTo(mDisconnectingState); 8382 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8383 config = getCurrentWifiConfiguration(); 8384 if (config != null) { 8385 // Disable autojoin 8386 config.numNoInternetAccessReports += 1; 8387 } 8388 } 8389 return HANDLED; 8390 case CMD_NETWORK_STATUS: 8391 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8392 config = getCurrentWifiConfiguration(); 8393 if (config != null) { 8394 // re-enable autojoin 8395 config.numNoInternetAccessReports = 0; 8396 config.validatedInternetAccess = true; 8397 } 8398 } 8399 return HANDLED; 8400 case CMD_ACCEPT_UNVALIDATED: 8401 boolean accept = (message.arg1 != 0); 8402 config = getCurrentWifiConfiguration(); 8403 if (config != null) { 8404 config.noInternetAccessExpected = accept; 8405 } 8406 return HANDLED; 8407 case CMD_TEST_NETWORK_DISCONNECT: 8408 // Force a disconnect 8409 if (message.arg1 == testNetworkDisconnectCounter) { 8410 mWifiNative.disconnect(); 8411 } 8412 break; 8413 case CMD_ASSOCIATED_BSSID: 8414 // ASSOCIATING to a new BSSID while already connected, indicates 8415 // that driver is roaming 8416 mLastDriverRoamAttempt = System.currentTimeMillis(); 8417 String toBSSID = (String)message.obj; 8418 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8419 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8420 } 8421 return NOT_HANDLED; 8422 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8423 long lastRoam = 0; 8424 if (mLastDriverRoamAttempt != 0) { 8425 // Calculate time since last driver roam attempt 8426 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8427 mLastDriverRoamAttempt = 0; 8428 } 8429 config = getCurrentWifiConfiguration(); 8430 if (mScreenOn 8431 && !linkDebouncing 8432 && config != null 8433 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8434 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8435 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8436 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8437 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8438 && mWifiInfo.getRssi() > 8439 WifiConfiguration.BAD_RSSI_24) 8440 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8441 && mWifiInfo.getRssi() > 8442 WifiConfiguration.BAD_RSSI_5))) { 8443 // Start de-bouncing the L2 disconnection: 8444 // this L2 disconnection might be spurious. 8445 // Hence we allow 7 seconds for the state machine to try 8446 // to reconnect, go thru the 8447 // roaming cycle and enter Obtaining IP address 8448 // before signalling the disconnect to ConnectivityService and L3 8449 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8450 linkDebouncing = true; 8451 8452 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8453 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8454 if (DBG) { 8455 log("NETWORK_DISCONNECTION_EVENT in connected state" 8456 + " BSSID=" + mWifiInfo.getBSSID() 8457 + " RSSI=" + mWifiInfo.getRssi() 8458 + " freq=" + mWifiInfo.getFrequency() 8459 + " reason=" + message.arg2 8460 + " -> debounce"); 8461 } 8462 return HANDLED; 8463 } else { 8464 if (DBG) { 8465 int ajst = -1; 8466 if (config != null) ajst = config.autoJoinStatus; 8467 log("NETWORK_DISCONNECTION_EVENT in connected state" 8468 + " BSSID=" + mWifiInfo.getBSSID() 8469 + " RSSI=" + mWifiInfo.getRssi() 8470 + " freq=" + mWifiInfo.getFrequency() 8471 + " was debouncing=" + linkDebouncing 8472 + " reason=" + message.arg2 8473 + " ajst=" + ajst); 8474 } 8475 } 8476 break; 8477 case CMD_AUTO_ROAM: 8478 // Clear the driver roam indication since we are attempting a framework roam 8479 mLastDriverRoamAttempt = 0; 8480 8481 /* Connect command coming from auto-join */ 8482 ScanResult candidate = (ScanResult)message.obj; 8483 String bssid = "any"; 8484 if (candidate != null && candidate.is5GHz()) { 8485 // Only lock BSSID for 5GHz networks 8486 bssid = candidate.BSSID; 8487 } 8488 int netId = mLastNetworkId; 8489 config = getCurrentWifiConfiguration(); 8490 8491 8492 if (config == null) { 8493 loge("AUTO_ROAM and no config, bail out..."); 8494 break; 8495 } 8496 8497 loge("CMD_AUTO_ROAM sup state " 8498 + mSupplicantStateTracker.getSupplicantStateName() 8499 + " my state " + getCurrentState().getName() 8500 + " nid=" + Integer.toString(netId) 8501 + " config " + config.configKey() 8502 + " roam=" + Integer.toString(message.arg2) 8503 + " to " + bssid 8504 + " targetRoamBSSID " + mTargetRoamBSSID); 8505 8506 /* Save the BSSID so as to lock it @ firmware */ 8507 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8508 loge("AUTO_ROAM nothing to do"); 8509 // Same BSSID, nothing to do 8510 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8511 break; 8512 }; 8513 8514 // Make sure the network is enabled, since supplicant will not re-enable it 8515 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8516 8517 if (deferForUserInput(message, netId, false)) { 8518 break; 8519 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8520 WifiConfiguration.USER_BANNED) { 8521 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8522 WifiManager.NOT_AUTHORIZED); 8523 break; 8524 } 8525 8526 boolean ret = false; 8527 if (mLastNetworkId != netId) { 8528 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8529 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8530 ret = true; 8531 } 8532 } else { 8533 ret = mWifiNative.reassociate(); 8534 } 8535 if (ret) { 8536 lastConnectAttempt = System.currentTimeMillis(); 8537 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8538 8539 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8540 mAutoRoaming = message.arg2; 8541 transitionTo(mRoamingState); 8542 8543 } else { 8544 loge("Failed to connect config: " + config + " netId: " + netId); 8545 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8546 WifiManager.ERROR); 8547 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8548 break; 8549 } 8550 break; 8551 default: 8552 return NOT_HANDLED; 8553 } 8554 return HANDLED; 8555 } 8556 8557 @Override 8558 public void exit() { 8559 loge("WifiStateMachine: Leaving Connected state"); 8560 setScanAlarm(false); 8561 mLastDriverRoamAttempt = 0; 8562 8563 stopLazyRoam(); 8564 } 8565 } 8566 8567 class DisconnectingState extends State { 8568 8569 @Override 8570 public void enter() { 8571 8572 if (PDBG) { 8573 loge(" Enter DisconnectingState State scan interval " 8574 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8575 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8576 + " screenOn=" + mScreenOn); 8577 } 8578 8579 // Make sure we disconnect: we enter this state prior to connecting to a new 8580 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 8581 // event which in this case will be indicating that supplicant started to associate. 8582 // In some cases supplicant doesn't ignore the connect requests (it might not 8583 // find the target SSID in its cache), 8584 // Therefore we end up stuck that state, hence the need for the watchdog. 8585 disconnectingWatchdogCount++; 8586 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8587 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8588 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8589 } 8590 8591 @Override 8592 public boolean processMessage(Message message) { 8593 logStateAndMessage(message, getClass().getSimpleName()); 8594 switch (message.what) { 8595 case CMD_SET_OPERATIONAL_MODE: 8596 if (message.arg1 != CONNECT_MODE) { 8597 deferMessage(message); 8598 } 8599 break; 8600 case CMD_START_SCAN: 8601 deferMessage(message); 8602 return HANDLED; 8603 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8604 if (disconnectingWatchdogCount == message.arg1) { 8605 if (DBG) log("disconnecting watchdog! -> disconnect"); 8606 handleNetworkDisconnect(); 8607 transitionTo(mDisconnectedState); 8608 } 8609 break; 8610 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8611 /** 8612 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8613 * we have missed the network disconnection, transition to mDisconnectedState 8614 * and handle the rest of the events there 8615 */ 8616 deferMessage(message); 8617 handleNetworkDisconnect(); 8618 transitionTo(mDisconnectedState); 8619 break; 8620 default: 8621 return NOT_HANDLED; 8622 } 8623 return HANDLED; 8624 } 8625 } 8626 8627 class DisconnectedState extends State { 8628 @Override 8629 public void enter() { 8630 // We dont scan frequently if this is a temporary disconnect 8631 // due to p2p 8632 if (mTemporarilyDisconnectWifi) { 8633 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8634 return; 8635 } 8636 8637 if (PDBG) { 8638 loge(" Enter DisconnectedState scan interval " 8639 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8640 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8641 + " screenOn=" + mScreenOn 8642 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8643 + mWifiConfigStore.enableHalBasedPno.get()); 8644 } 8645 8646 /** clear the roaming state, if we were roaming, we failed */ 8647 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8648 8649 if (useHalBasedAutoJoinOffload()) { 8650 startGScanDisconnectedModeOffload(); 8651 } else { 8652 if (mScreenOn) { 8653 /** 8654 * screen lit and => delayed timer 8655 */ 8656 startDelayedScan(mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8657 null, null); 8658 } else { 8659 /** 8660 * screen dark and PNO supported => scan alarm disabled 8661 */ 8662 if (mEnableBackgroundScan) { 8663 /* If a regular scan result is pending, do not initiate background 8664 * scan until the scan results are returned. This is needed because 8665 * initiating a background scan will cancel the regular scan and 8666 * scan results will not be returned until background scanning is 8667 * cleared 8668 */ 8669 if (!mIsScanOngoing) { 8670 enableBackgroundScan(true); 8671 } 8672 } else { 8673 setScanAlarm(true); 8674 } 8675 } 8676 } 8677 8678 /** 8679 * If we have no networks saved, the supplicant stops doing the periodic scan. 8680 * The scans are useful to notify the user of the presence of an open network. 8681 * Note that these are not wake up scans. 8682 */ 8683 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8684 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8685 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8686 } 8687 8688 mDisconnectedTimeStamp = System.currentTimeMillis(); 8689 8690 } 8691 @Override 8692 public boolean processMessage(Message message) { 8693 boolean ret = HANDLED; 8694 8695 logStateAndMessage(message, getClass().getSimpleName()); 8696 8697 switch (message.what) { 8698 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8699 if (mP2pConnected.get()) break; 8700 if (message.arg1 == mPeriodicScanToken && 8701 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8702 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8703 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8704 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8705 } 8706 break; 8707 case WifiManager.FORGET_NETWORK: 8708 case CMD_REMOVE_NETWORK: 8709 case CMD_REMOVE_APP_CONFIGURATIONS: 8710 case CMD_REMOVE_USER_CONFIGURATIONS: 8711 // Set up a delayed message here. After the forget/remove is handled 8712 // the handled delayed message will determine if there is a need to 8713 // scan and continue 8714 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8715 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8716 ret = NOT_HANDLED; 8717 break; 8718 case CMD_SET_OPERATIONAL_MODE: 8719 if (message.arg1 != CONNECT_MODE) { 8720 mOperationalMode = message.arg1; 8721 8722 mWifiConfigStore.disableAllNetworks(); 8723 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8724 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8725 setWifiState(WIFI_STATE_DISABLED); 8726 } 8727 transitionTo(mScanModeState); 8728 } 8729 mWifiConfigStore. 8730 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8731 break; 8732 /* Ignore network disconnect */ 8733 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8734 break; 8735 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8736 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8737 if (DBG) { 8738 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8739 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8740 + " debouncing=" + linkDebouncing); 8741 } 8742 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8743 /* ConnectModeState does the rest of the handling */ 8744 ret = NOT_HANDLED; 8745 break; 8746 case CMD_START_SCAN: 8747 if (!checkOrDeferScanAllowed(message)) { 8748 // The scan request was rescheduled 8749 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8750 return HANDLED; 8751 } 8752 /* Disable background scan temporarily during a regular scan */ 8753 if (mEnableBackgroundScan) { 8754 enableBackgroundScan(false); 8755 } 8756 if (message.arg1 == SCAN_ALARM_SOURCE) { 8757 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8758 // not be processed) and restart the scan 8759 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 8760 if (mP2pConnected.get()) { 8761 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8762 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8763 period); 8764 } 8765 if (!checkAndRestartDelayedScan(message.arg2, 8766 true, period, null, null)) { 8767 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8768 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8769 + message.arg1 8770 + " " + message.arg2 + ", " + mDelayedScanCounter 8771 + " -> obsolete"); 8772 return HANDLED; 8773 } 8774 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8775 ret = HANDLED; 8776 } else { 8777 ret = NOT_HANDLED; 8778 } 8779 break; 8780 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8781 /* If we are still in Disconnected state after having discovered a valid 8782 * network this means autojoin didnt managed to associate to the network, 8783 * then restart PNO so as we will try associating to it again. 8784 */ 8785 if (useHalBasedAutoJoinOffload()) { 8786 if (mGScanStartTimeMilli == 0) { 8787 // If offload is not started, then start it... 8788 startGScanDisconnectedModeOffload(); 8789 } else { 8790 // If offload is already started, then check if we need to increase 8791 // the scan period and restart the Gscan 8792 long now = System.currentTimeMillis(); 8793 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8794 && ((now - mGScanStartTimeMilli) 8795 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8796 && (mGScanPeriodMilli 8797 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8798 { 8799 startDisconnectedGScan(); 8800 } 8801 } 8802 } 8803 break; 8804 case WifiMonitor.SCAN_RESULTS_EVENT: 8805 case WifiMonitor.SCAN_FAILED_EVENT: 8806 /* Re-enable background scan when a pending scan result is received */ 8807 if (mEnableBackgroundScan && mIsScanOngoing) { 8808 enableBackgroundScan(true); 8809 } 8810 /* Handled in parent state */ 8811 ret = NOT_HANDLED; 8812 break; 8813 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8814 NetworkInfo info = (NetworkInfo) message.obj; 8815 mP2pConnected.set(info.isConnected()); 8816 if (mP2pConnected.get()) { 8817 int defaultInterval = mContext.getResources().getInteger( 8818 R.integer.config_wifi_scan_interval_p2p_connected); 8819 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8820 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8821 defaultInterval); 8822 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8823 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8824 if (DBG) log("Turn on scanning after p2p disconnected"); 8825 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8826 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8827 } else { 8828 // If P2P is not connected and there are saved networks, then restart 8829 // scanning at the normal period. This is necessary because scanning might 8830 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8831 // was set to zero. 8832 if (useHalBasedAutoJoinOffload()) { 8833 startGScanDisconnectedModeOffload(); 8834 } else { 8835 startDelayedScan( 8836 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8837 null, null); 8838 } 8839 } 8840 break; 8841 case CMD_RECONNECT: 8842 case CMD_REASSOCIATE: 8843 if (mTemporarilyDisconnectWifi) { 8844 // Drop a third party reconnect/reassociate if STA is 8845 // temporarily disconnected for p2p 8846 break; 8847 } else { 8848 // ConnectModeState handles it 8849 ret = NOT_HANDLED; 8850 } 8851 break; 8852 case CMD_SCREEN_STATE_CHANGED: 8853 handleScreenStateChanged(message.arg1 != 0); 8854 break; 8855 default: 8856 ret = NOT_HANDLED; 8857 } 8858 return ret; 8859 } 8860 8861 @Override 8862 public void exit() { 8863 /* No need for a background scan upon exit from a disconnected state */ 8864 if (mEnableBackgroundScan) { 8865 enableBackgroundScan(false); 8866 } 8867 setScanAlarm(false); 8868 } 8869 } 8870 8871 class WpsRunningState extends State { 8872 // Tracks the source to provide a reply 8873 private Message mSourceMessage; 8874 @Override 8875 public void enter() { 8876 mSourceMessage = Message.obtain(getCurrentMessage()); 8877 } 8878 @Override 8879 public boolean processMessage(Message message) { 8880 logStateAndMessage(message, getClass().getSimpleName()); 8881 8882 switch (message.what) { 8883 case WifiMonitor.WPS_SUCCESS_EVENT: 8884 // Ignore intermediate success, wait for full connection 8885 break; 8886 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8887 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8888 mSourceMessage.recycle(); 8889 mSourceMessage = null; 8890 deferMessage(message); 8891 transitionTo(mDisconnectedState); 8892 break; 8893 case WifiMonitor.WPS_OVERLAP_EVENT: 8894 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8895 WifiManager.WPS_OVERLAP_ERROR); 8896 mSourceMessage.recycle(); 8897 mSourceMessage = null; 8898 transitionTo(mDisconnectedState); 8899 break; 8900 case WifiMonitor.WPS_FAIL_EVENT: 8901 // Arg1 has the reason for the failure 8902 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8903 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8904 mSourceMessage.recycle(); 8905 mSourceMessage = null; 8906 transitionTo(mDisconnectedState); 8907 } else { 8908 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8909 } 8910 break; 8911 case WifiMonitor.WPS_TIMEOUT_EVENT: 8912 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8913 WifiManager.WPS_TIMED_OUT); 8914 mSourceMessage.recycle(); 8915 mSourceMessage = null; 8916 transitionTo(mDisconnectedState); 8917 break; 8918 case WifiManager.START_WPS: 8919 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8920 break; 8921 case WifiManager.CANCEL_WPS: 8922 if (mWifiNative.cancelWps()) { 8923 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8924 } else { 8925 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8926 } 8927 transitionTo(mDisconnectedState); 8928 break; 8929 /** 8930 * Defer all commands that can cause connections to a different network 8931 * or put the state machine out of connect mode 8932 */ 8933 case CMD_STOP_DRIVER: 8934 case CMD_SET_OPERATIONAL_MODE: 8935 case WifiManager.CONNECT_NETWORK: 8936 case CMD_ENABLE_NETWORK: 8937 case CMD_RECONNECT: 8938 case CMD_REASSOCIATE: 8939 case CMD_ENABLE_ALL_NETWORKS: 8940 deferMessage(message); 8941 break; 8942 case CMD_AUTO_CONNECT: 8943 case CMD_AUTO_ROAM: 8944 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8945 return HANDLED; 8946 case CMD_START_SCAN: 8947 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8948 return HANDLED; 8949 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8950 if (DBG) log("Network connection lost"); 8951 handleNetworkDisconnect(); 8952 break; 8953 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8954 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8955 break; 8956 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8957 // Disregard auth failure events during WPS connection. The 8958 // EAP sequence is retried several times, and there might be 8959 // failures (especially for wps pin). We will get a WPS_XXX 8960 // event at the end of the sequence anyway. 8961 if (DBG) log("Ignore auth failure during WPS connection"); 8962 break; 8963 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8964 // Throw away supplicant state changes when WPS is running. 8965 // We will start getting supplicant state changes once we get 8966 // a WPS success or failure 8967 break; 8968 default: 8969 return NOT_HANDLED; 8970 } 8971 return HANDLED; 8972 } 8973 8974 @Override 8975 public void exit() { 8976 mWifiConfigStore.enableAllNetworks(); 8977 mWifiConfigStore.loadConfiguredNetworks(); 8978 } 8979 } 8980 8981 class SoftApStartingState extends State { 8982 @Override 8983 public void enter() { 8984 final Message message = getCurrentMessage(); 8985 if (message.what == CMD_START_AP) { 8986 final WifiConfiguration config = (WifiConfiguration) message.obj; 8987 8988 if (config == null) { 8989 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8990 } else { 8991 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8992 startSoftApWithConfig(config); 8993 } 8994 } else { 8995 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8996 } 8997 } 8998 @Override 8999 public boolean processMessage(Message message) { 9000 logStateAndMessage(message, getClass().getSimpleName()); 9001 9002 switch(message.what) { 9003 case CMD_START_SUPPLICANT: 9004 case CMD_STOP_SUPPLICANT: 9005 case CMD_START_AP: 9006 case CMD_STOP_AP: 9007 case CMD_START_DRIVER: 9008 case CMD_STOP_DRIVER: 9009 case CMD_SET_OPERATIONAL_MODE: 9010 case CMD_SET_COUNTRY_CODE: 9011 case CMD_SET_FREQUENCY_BAND: 9012 case CMD_START_PACKET_FILTERING: 9013 case CMD_STOP_PACKET_FILTERING: 9014 case CMD_TETHER_STATE_CHANGE: 9015 deferMessage(message); 9016 break; 9017 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9018 WifiConfiguration config = (WifiConfiguration) message.obj; 9019 if (config != null) { 9020 startSoftApWithConfig(config); 9021 } else { 9022 loge("Softap config is null!"); 9023 sendMessage(CMD_START_AP_FAILURE); 9024 } 9025 break; 9026 case CMD_START_AP_SUCCESS: 9027 setWifiApState(WIFI_AP_STATE_ENABLED); 9028 transitionTo(mSoftApStartedState); 9029 break; 9030 case CMD_START_AP_FAILURE: 9031 setWifiApState(WIFI_AP_STATE_FAILED); 9032 transitionTo(mInitialState); 9033 break; 9034 default: 9035 return NOT_HANDLED; 9036 } 9037 return HANDLED; 9038 } 9039 } 9040 9041 class SoftApStartedState extends State { 9042 @Override 9043 public boolean processMessage(Message message) { 9044 logStateAndMessage(message, getClass().getSimpleName()); 9045 9046 switch(message.what) { 9047 case CMD_STOP_AP: 9048 if (DBG) log("Stopping Soft AP"); 9049 /* We have not tethered at this point, so we just shutdown soft Ap */ 9050 try { 9051 mNwService.stopAccessPoint(mInterfaceName); 9052 } catch(Exception e) { 9053 loge("Exception in stopAccessPoint()"); 9054 } 9055 setWifiApState(WIFI_AP_STATE_DISABLED); 9056 transitionTo(mInitialState); 9057 break; 9058 case CMD_START_AP: 9059 // Ignore a start on a running access point 9060 break; 9061 // Fail client mode operation when soft AP is enabled 9062 case CMD_START_SUPPLICANT: 9063 loge("Cannot start supplicant with a running soft AP"); 9064 setWifiState(WIFI_STATE_UNKNOWN); 9065 break; 9066 case CMD_TETHER_STATE_CHANGE: 9067 TetherStateChange stateChange = (TetherStateChange) message.obj; 9068 if (startTethering(stateChange.available)) { 9069 transitionTo(mTetheringState); 9070 } 9071 break; 9072 default: 9073 return NOT_HANDLED; 9074 } 9075 return HANDLED; 9076 } 9077 } 9078 9079 class TetheringState extends State { 9080 @Override 9081 public void enter() { 9082 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9083 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9084 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9085 } 9086 @Override 9087 public boolean processMessage(Message message) { 9088 logStateAndMessage(message, getClass().getSimpleName()); 9089 9090 switch(message.what) { 9091 case CMD_TETHER_STATE_CHANGE: 9092 TetherStateChange stateChange = (TetherStateChange) message.obj; 9093 if (isWifiTethered(stateChange.active)) { 9094 transitionTo(mTetheredState); 9095 } 9096 return HANDLED; 9097 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9098 if (message.arg1 == mTetherToken) { 9099 loge("Failed to get tether update, shutdown soft access point"); 9100 transitionTo(mSoftApStartedState); 9101 // Needs to be first thing handled 9102 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9103 } 9104 break; 9105 case CMD_START_SUPPLICANT: 9106 case CMD_STOP_SUPPLICANT: 9107 case CMD_START_AP: 9108 case CMD_STOP_AP: 9109 case CMD_START_DRIVER: 9110 case CMD_STOP_DRIVER: 9111 case CMD_SET_OPERATIONAL_MODE: 9112 case CMD_SET_COUNTRY_CODE: 9113 case CMD_SET_FREQUENCY_BAND: 9114 case CMD_START_PACKET_FILTERING: 9115 case CMD_STOP_PACKET_FILTERING: 9116 deferMessage(message); 9117 break; 9118 default: 9119 return NOT_HANDLED; 9120 } 9121 return HANDLED; 9122 } 9123 } 9124 9125 class TetheredState extends State { 9126 @Override 9127 public boolean processMessage(Message message) { 9128 logStateAndMessage(message, getClass().getSimpleName()); 9129 9130 switch(message.what) { 9131 case CMD_TETHER_STATE_CHANGE: 9132 TetherStateChange stateChange = (TetherStateChange) message.obj; 9133 if (!isWifiTethered(stateChange.active)) { 9134 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9135 setHostApRunning(null, false); 9136 setHostApRunning(null, true); 9137 } 9138 return HANDLED; 9139 case CMD_STOP_AP: 9140 if (DBG) log("Untethering before stopping AP"); 9141 setWifiApState(WIFI_AP_STATE_DISABLING); 9142 stopTethering(); 9143 transitionTo(mUntetheringState); 9144 // More work to do after untethering 9145 deferMessage(message); 9146 break; 9147 default: 9148 return NOT_HANDLED; 9149 } 9150 return HANDLED; 9151 } 9152 } 9153 9154 class UntetheringState extends State { 9155 @Override 9156 public void enter() { 9157 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9158 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9159 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9160 9161 } 9162 @Override 9163 public boolean processMessage(Message message) { 9164 logStateAndMessage(message, getClass().getSimpleName()); 9165 9166 switch(message.what) { 9167 case CMD_TETHER_STATE_CHANGE: 9168 TetherStateChange stateChange = (TetherStateChange) message.obj; 9169 9170 /* Wait till wifi is untethered */ 9171 if (isWifiTethered(stateChange.active)) break; 9172 9173 transitionTo(mSoftApStartedState); 9174 break; 9175 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9176 if (message.arg1 == mTetherToken) { 9177 loge("Failed to get tether update, force stop access point"); 9178 transitionTo(mSoftApStartedState); 9179 } 9180 break; 9181 case CMD_START_SUPPLICANT: 9182 case CMD_STOP_SUPPLICANT: 9183 case CMD_START_AP: 9184 case CMD_STOP_AP: 9185 case CMD_START_DRIVER: 9186 case CMD_STOP_DRIVER: 9187 case CMD_SET_OPERATIONAL_MODE: 9188 case CMD_SET_COUNTRY_CODE: 9189 case CMD_SET_FREQUENCY_BAND: 9190 case CMD_START_PACKET_FILTERING: 9191 case CMD_STOP_PACKET_FILTERING: 9192 deferMessage(message); 9193 break; 9194 default: 9195 return NOT_HANDLED; 9196 } 9197 return HANDLED; 9198 } 9199 } 9200 9201 /** 9202 * State machine initiated requests can have replyTo set to null indicating 9203 * there are no recepients, we ignore those reply actions. 9204 */ 9205 private void replyToMessage(Message msg, int what) { 9206 if (msg.replyTo == null) return; 9207 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9208 mReplyChannel.replyToMessage(msg, dstMsg); 9209 } 9210 9211 private void replyToMessage(Message msg, int what, int arg1) { 9212 if (msg.replyTo == null) return; 9213 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9214 dstMsg.arg1 = arg1; 9215 mReplyChannel.replyToMessage(msg, dstMsg); 9216 } 9217 9218 private void replyToMessage(Message msg, int what, Object obj) { 9219 if (msg.replyTo == null) return; 9220 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9221 dstMsg.obj = obj; 9222 mReplyChannel.replyToMessage(msg, dstMsg); 9223 } 9224 9225 /** 9226 * arg2 on the source message has a unique id that needs to be retained in replies 9227 * to match the request 9228 * <p>see WifiManager for details 9229 */ 9230 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9231 Message msg = Message.obtain(); 9232 msg.what = what; 9233 msg.arg2 = srcMsg.arg2; 9234 return msg; 9235 } 9236 9237 /** 9238 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9239 * @param msg Must have a WifiConfiguration obj to succeed 9240 */ 9241 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9242 WifiConfiguration config) { 9243 if (config != null && config.preSharedKey != null) { 9244 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 9245 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 9246 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 9247 wifiCredentialEventType); 9248 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 9249 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 9250 } 9251 } 9252 9253 private static int parseHex(char ch) { 9254 if ('0' <= ch && ch <= '9') { 9255 return ch - '0'; 9256 } else if ('a' <= ch && ch <= 'f') { 9257 return ch - 'a' + 10; 9258 } else if ('A' <= ch && ch <= 'F') { 9259 return ch - 'A' + 10; 9260 } else { 9261 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9262 } 9263 } 9264 9265 private byte[] parseHex(String hex) { 9266 /* This only works for good input; don't throw bad data at it */ 9267 if (hex == null) { 9268 return new byte[0]; 9269 } 9270 9271 if (hex.length() % 2 != 0) { 9272 throw new NumberFormatException(hex + " is not a valid hex string"); 9273 } 9274 9275 byte[] result = new byte[(hex.length())/2 + 1]; 9276 result[0] = (byte) ((hex.length())/2); 9277 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9278 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9279 byte b = (byte) (val & 0xFF); 9280 result[j] = b; 9281 } 9282 9283 return result; 9284 } 9285 9286 private static String makeHex(byte[] bytes) { 9287 StringBuilder sb = new StringBuilder(); 9288 for (byte b : bytes) { 9289 sb.append(String.format("%02x", b)); 9290 } 9291 return sb.toString(); 9292 } 9293 9294 private static String makeHex(byte[] bytes, int from, int len) { 9295 StringBuilder sb = new StringBuilder(); 9296 for (int i = 0; i < len; i++) { 9297 sb.append(String.format("%02x", bytes[from+i])); 9298 } 9299 return sb.toString(); 9300 } 9301 9302 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9303 9304 int len = array1.length + array2.length + array3.length; 9305 9306 if (array1.length != 0) { 9307 len++; /* add another byte for size */ 9308 } 9309 9310 if (array2.length != 0) { 9311 len++; /* add another byte for size */ 9312 } 9313 9314 if (array3.length != 0) { 9315 len++; /* add another byte for size */ 9316 } 9317 9318 byte[] result = new byte[len]; 9319 9320 int index = 0; 9321 if (array1.length != 0) { 9322 result[index] = (byte) (array1.length & 0xFF); 9323 index++; 9324 for (byte b : array1) { 9325 result[index] = b; 9326 index++; 9327 } 9328 } 9329 9330 if (array2.length != 0) { 9331 result[index] = (byte) (array2.length & 0xFF); 9332 index++; 9333 for (byte b : array2) { 9334 result[index] = b; 9335 index++; 9336 } 9337 } 9338 9339 if (array3.length != 0) { 9340 result[index] = (byte) (array3.length & 0xFF); 9341 index++; 9342 for (byte b : array3) { 9343 result[index] = b; 9344 index++; 9345 } 9346 } 9347 return result; 9348 } 9349 9350 private static byte[] concatHex(byte[] array1, byte[] array2) { 9351 9352 int len = array1.length + array2.length; 9353 9354 byte[] result = new byte[len]; 9355 9356 int index = 0; 9357 if (array1.length != 0) { 9358 for (byte b : array1) { 9359 result[index] = b; 9360 index++; 9361 } 9362 } 9363 9364 if (array2.length != 0) { 9365 for (byte b : array2) { 9366 result[index] = b; 9367 index++; 9368 } 9369 } 9370 9371 return result; 9372 } 9373 9374 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9375 if (targetWificonfiguration == null 9376 || targetWificonfiguration.networkId == requestData.networkId) { 9377 logd("id matches targetWifiConfiguration"); 9378 } else { 9379 logd("id does not match targetWifiConfiguration"); 9380 return; 9381 } 9382 9383 TelephonyManager tm = (TelephonyManager) 9384 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9385 9386 if (tm != null) { 9387 StringBuilder sb = new StringBuilder(); 9388 for (String challenge : requestData.data) { 9389 9390 if (challenge == null || challenge.isEmpty()) 9391 continue; 9392 logd("RAND = " + challenge); 9393 9394 byte[] rand = null; 9395 try { 9396 rand = parseHex(challenge); 9397 } catch (NumberFormatException e) { 9398 loge("malformed challenge"); 9399 continue; 9400 } 9401 9402 String base64Challenge = android.util.Base64.encodeToString( 9403 rand, android.util.Base64.NO_WRAP); 9404 /* 9405 * First, try with appType = 2 => USIM according to 9406 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9407 */ 9408 int appType = 2; 9409 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9410 if (tmResponse == null) { 9411 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9412 * appType = 1 => SIM 9413 */ 9414 appType = 1; 9415 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9416 } 9417 logv("Raw Response - " + tmResponse); 9418 9419 if (tmResponse != null && tmResponse.length() > 4) { 9420 byte[] result = android.util.Base64.decode(tmResponse, 9421 android.util.Base64.DEFAULT); 9422 logv("Hex Response -" + makeHex(result)); 9423 int sres_len = result[0]; 9424 String sres = makeHex(result, 1, sres_len); 9425 int kc_offset = 1+sres_len; 9426 int kc_len = result[kc_offset]; 9427 String kc = makeHex(result, 1+kc_offset, kc_len); 9428 sb.append(":" + kc + ":" + sres); 9429 logv("kc:" + kc + " sres:" + sres); 9430 } else { 9431 loge("bad response - " + tmResponse); 9432 } 9433 } 9434 9435 String response = sb.toString(); 9436 logv("Supplicant Response -" + response); 9437 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9438 } else { 9439 loge("could not get telephony manager"); 9440 } 9441 } 9442 9443 void handle3GAuthRequest(SimAuthRequestData requestData) { 9444 StringBuilder sb = new StringBuilder(); 9445 byte[] rand = null; 9446 byte[] authn = null; 9447 String res_type = "UMTS-AUTH"; 9448 9449 if (targetWificonfiguration == null 9450 || targetWificonfiguration.networkId == requestData.networkId) { 9451 logd("id matches targetWifiConfiguration"); 9452 } else { 9453 logd("id does not match targetWifiConfiguration"); 9454 return; 9455 } 9456 if (requestData.data.length == 2) { 9457 try { 9458 rand = parseHex(requestData.data[0]); 9459 authn = parseHex(requestData.data[1]); 9460 } catch (NumberFormatException e) { 9461 loge("malformed challenge"); 9462 } 9463 } else { 9464 loge("malformed challenge"); 9465 } 9466 9467 String tmResponse = ""; 9468 if (rand != null && authn != null) { 9469 String base64Challenge = android.util.Base64.encodeToString( 9470 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9471 9472 TelephonyManager tm = (TelephonyManager) 9473 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9474 if (tm != null) { 9475 int appType = 2; // 2 => USIM 9476 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9477 logv("Raw Response - " + tmResponse); 9478 } else { 9479 loge("could not get telephony manager"); 9480 } 9481 } 9482 9483 if (tmResponse != null && tmResponse.length() > 4) { 9484 byte[] result = android.util.Base64.decode(tmResponse, 9485 android.util.Base64.DEFAULT); 9486 loge("Hex Response - " + makeHex(result)); 9487 byte tag = result[0]; 9488 if (tag == (byte) 0xdb) { 9489 logv("successful 3G authentication "); 9490 int res_len = result[1]; 9491 String res = makeHex(result, 2, res_len); 9492 int ck_len = result[res_len + 2]; 9493 String ck = makeHex(result, res_len + 3, ck_len); 9494 int ik_len = result[res_len + ck_len + 3]; 9495 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9496 sb.append(":" + ik + ":" + ck + ":" + res); 9497 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9498 } else if (tag == (byte) 0xdc) { 9499 loge("synchronisation failure"); 9500 int auts_len = result[1]; 9501 String auts = makeHex(result, 2, auts_len); 9502 res_type = "UMTS-AUTS"; 9503 sb.append(":" + auts); 9504 logv("auts:" + auts); 9505 } else { 9506 loge("bad response - unknown tag = " + tag); 9507 return; 9508 } 9509 } else { 9510 loge("bad response - " + tmResponse); 9511 return; 9512 } 9513 9514 String response = sb.toString(); 9515 logv("Supplicant Response -" + response); 9516 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9517 } 9518} 9519