WifiStateMachine.java revision 71e35742798ca292d2fb727dd3a73e11b0f9b09d
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.PendingIntent; 38import android.app.backup.IBackupManager; 39import android.bluetooth.BluetoothAdapter; 40import android.content.BroadcastReceiver; 41import android.content.Context; 42import android.content.Intent; 43import android.content.IntentFilter; 44import android.content.pm.ApplicationInfo; 45import android.content.pm.IPackageManager; 46import android.content.pm.PackageManager; 47import android.database.ContentObserver; 48import android.net.ConnectivityManager; 49import android.net.DhcpResults; 50import android.net.BaseDhcpStateMachine; 51import android.net.DhcpStateMachine; 52import android.net.Network; 53import android.net.dhcp.DhcpClient; 54import android.net.InterfaceConfiguration; 55import android.net.IpReachabilityMonitor; 56import android.net.LinkAddress; 57import android.net.LinkProperties; 58import android.net.NetworkAgent; 59import android.net.NetworkCapabilities; 60import android.net.NetworkFactory; 61import android.net.NetworkInfo; 62import android.net.NetworkInfo.DetailedState; 63import android.net.NetworkRequest; 64import android.net.NetworkUtils; 65import android.net.RouteInfo; 66import android.net.StaticIpConfiguration; 67import android.net.TrafficStats; 68import android.net.wifi.RssiPacketCountInfo; 69import android.net.wifi.ScanResult; 70import android.net.wifi.ScanSettings; 71import android.net.wifi.SupplicantState; 72import android.net.wifi.WifiChannel; 73import android.net.wifi.WifiConfiguration; 74import android.net.wifi.WifiConnectionStatistics; 75import android.net.wifi.WifiEnterpriseConfig; 76import android.net.wifi.WifiInfo; 77import android.net.wifi.WifiLinkLayerStats; 78import android.net.wifi.WifiManager; 79import android.net.wifi.WifiScanner; 80import android.net.wifi.WifiSsid; 81import android.net.wifi.WpsInfo; 82import android.net.wifi.WpsResult; 83import android.net.wifi.WpsResult.Status; 84import android.net.wifi.p2p.IWifiP2pManager; 85import android.os.BatteryStats; 86import android.os.Binder; 87import android.os.Bundle; 88import android.os.IBinder; 89import android.os.INetworkManagementService; 90import android.os.Looper; 91import android.os.Message; 92import android.os.Messenger; 93import android.os.PowerManager; 94import android.os.Process; 95import android.os.RemoteException; 96import android.os.ServiceManager; 97import android.os.SystemClock; 98import android.os.SystemProperties; 99import android.os.UserHandle; 100import android.os.WorkSource; 101import android.provider.Settings; 102import android.telephony.TelephonyManager; 103import android.text.TextUtils; 104import android.util.Log; 105import android.util.LruCache; 106 107import com.android.internal.R; 108import com.android.internal.app.IBatteryStats; 109import com.android.internal.util.AsyncChannel; 110import com.android.internal.util.Protocol; 111import com.android.internal.util.State; 112import com.android.internal.util.StateMachine; 113import com.android.server.connectivity.KeepalivePacketData; 114import com.android.server.net.NetlinkTracker; 115import com.android.server.wifi.hotspot2.NetworkDetail; 116import com.android.server.wifi.hotspot2.SupplicantBridge; 117import com.android.server.wifi.hotspot2.Utils; 118import com.android.server.wifi.p2p.WifiP2pServiceImpl; 119 120import java.io.BufferedReader; 121import java.io.FileDescriptor; 122import java.io.FileNotFoundException; 123import java.io.FileReader; 124import java.io.IOException; 125import java.io.PrintWriter; 126import java.net.Inet4Address; 127import java.net.InetAddress; 128import java.util.ArrayList; 129import java.util.Arrays; 130import java.util.Calendar; 131import java.util.HashSet; 132import java.util.LinkedList; 133import java.util.List; 134import java.util.Locale; 135import java.util.Queue; 136import java.util.Random; 137import java.util.concurrent.atomic.AtomicBoolean; 138import java.util.concurrent.atomic.AtomicInteger; 139import java.util.regex.Pattern; 140 141/** 142 * Track the state of Wifi connectivity. All event handling is done here, 143 * and all changes in connectivity state are initiated here. 144 * 145 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 146 * In the current implementation, we support concurrent wifi p2p and wifi operation. 147 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 148 * handles p2p operation. 149 * 150 * @hide 151 */ 152public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler, 153 WifiNative.WifiRssiEventHandler { 154 155 private static final String NETWORKTYPE = "WIFI"; 156 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 157 private static boolean DBG = false; 158 private static boolean VDBG = false; 159 private static boolean VVDBG = false; 160 private static boolean USE_PAUSE_SCANS = false; 161 private static boolean mLogMessages = false; 162 private static final String TAG = "WifiStateMachine"; 163 164 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 165 166 private static final String GOOGLE_OUI = "DA-A1-19"; 167 168 /* temporary debug flag - best network selection development */ 169 private static boolean PDBG = false; 170 171 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 172 * the corresponding BSSID. 173 */ 174 private boolean didBlackListBSSID = false; 175 176 /** 177 * Log with error attribute 178 * 179 * @param s is string log 180 */ 181 protected void loge(String s) { 182 Log.e(getName(), s); 183 } 184 protected void logd(String s) { 185 Log.d(getName(), s); 186 } 187 protected void log(String s) {; 188 Log.d(getName(), s); 189 } 190 191 private WifiMonitor mWifiMonitor; 192 private WifiNative mWifiNative; 193 private WifiConfigStore mWifiConfigStore; 194 private WifiAutoJoinController mWifiAutoJoinController; 195 private INetworkManagementService mNwService; 196 private ConnectivityManager mCm; 197 private DummyWifiLogger mWifiLogger; 198 private WifiApConfigStore mWifiApConfigStore; 199 private final boolean mP2pSupported; 200 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 201 private boolean mTemporarilyDisconnectWifi = false; 202 private final String mPrimaryDeviceType; 203 204 /* Scan results handling */ 205 private List<ScanDetail> mScanResults = new ArrayList<>(); 206 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 207 private static final int SCAN_RESULT_CACHE_SIZE = 160; 208 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 209 // For debug, number of known scan results that were found as part of last scan result event, 210 // as well the number of scans results returned by the supplicant with that message 211 private int mNumScanResultsKnown; 212 private int mNumScanResultsReturned; 213 214 private boolean mScreenOn = false; 215 private int mCurrentAssociateNetworkId = -1; 216 /* Chipset supports background scan */ 217 private final boolean mBackgroundScanSupported; 218 219 private final String mInterfaceName; 220 /* Tethering interface could be separate from wlan interface */ 221 private String mTetherInterfaceName; 222 223 private int mLastSignalLevel = -1; 224 private String mLastBssid; 225 private int mLastNetworkId; // The network Id we successfully joined 226 private boolean linkDebouncing = false; 227 228 private boolean mHalBasedPnoDriverSupported = false; 229 230 // Below booleans are configurations coming from the Developper Settings 231 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 232 private boolean mHalBasedPnoEnableInDevSettings = false; 233 234 235 private int mHalFeatureSet = 0; 236 private static int mPnoResultFound = 0; 237 238 @Override 239 public void onPnoNetworkFound(ScanResult results[]) { 240 if (DBG) { 241 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 242 for (int i = 0; i < results.length; i++) { 243 Log.e(TAG, results[i].toString()); 244 } 245 } 246 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 247 } 248 249 public void processPnoNetworkFound(ScanResult results[]) { 250 ScanSettings settings = new ScanSettings(); 251 settings.channelSet = new ArrayList<WifiChannel>(); 252 StringBuilder sb = new StringBuilder(); 253 sb.append(""); 254 for (int i=0; i<results.length; i++) { 255 WifiChannel channel = new WifiChannel(); 256 channel.freqMHz = results[i].frequency; 257 settings.channelSet.add(channel); 258 sb.append(results[i].SSID).append(" "); 259 } 260 261 stopPnoOffload(); 262 263 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 264 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 265 mPnoResultFound ++; 266 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 267 int delay = 30 * 1000; 268 // reconfigure Pno after 1 minutes if we're still in disconnected state 269 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 270 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 271 (long)delay); 272 mRestartAutoJoinOffloadCounter++; 273 } 274 275 @Override 276 public void onRssiThresholdBreached(byte curRssi) { 277 if (DBG) { 278 Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi); 279 } 280 sendMessage(CMD_RSSI_THRESHOLD_BREACH, curRssi); 281 } 282 283 public void processRssiThreshold(byte curRssi, int reason) { 284 if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) { 285 Log.wtf(TAG, "processRssiThreshold: Invalid rssi " + curRssi); 286 return; 287 } 288 for (int i = 0; i < mRssiRanges.length; i++) { 289 if (curRssi < mRssiRanges[i]) { 290 // Assume sorted values(ascending order) for rssi, 291 // bounded by high(127) and low(-128) at extremeties 292 byte maxRssi = mRssiRanges[i]; 293 byte minRssi = mRssiRanges[i-1]; 294 // This value of hw has to be believed as this value is averaged and has breached 295 // the rssi thresholds and raised event to host. This would be eggregious if this 296 // value is invalid 297 mWifiInfo.setRssi((int) curRssi); 298 updateCapabilities(getCurrentWifiConfiguration()); 299 int ret = startRssiMonitoringOffload(maxRssi, minRssi); 300 Log.d(TAG, "Re-program RSSI thresholds for " + smToString(reason) + 301 ": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret); 302 break; 303 } 304 } 305 } 306 public void registerNetworkDisabled(int netId) { 307 // Restart legacy PNO and autojoin offload if needed 308 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 309 mRestartAutoJoinOffloadCounter, " registerNetworkDisabled " + netId); 310 mRestartAutoJoinOffloadCounter++; 311 } 312 313 // Testing various network disconnect cases by sending lots of spurious 314 // disconnect to supplicant 315 private boolean testNetworkDisconnect = false; 316 317 private boolean mEnableRssiPolling = false; 318 private boolean mLegacyPnoEnabled = false; 319 private int mRssiPollToken = 0; 320 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 321 * In CONNECT_MODE, the STA can scan and connect to an access point 322 * In SCAN_ONLY_MODE, the STA can only scan for access points 323 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 324 */ 325 private int mOperationalMode = CONNECT_MODE; 326 private boolean mIsScanOngoing = false; 327 private boolean mIsFullScanOngoing = false; 328 private boolean mSendScanResultsBroadcast = false; 329 330 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 331 private WorkSource mScanWorkSource = null; 332 private static final int UNKNOWN_SCAN_SOURCE = -1; 333 private static final int SCAN_ALARM_SOURCE = -2; 334 private static final int ADD_OR_UPDATE_SOURCE = -3; 335 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 336 private static final int ENABLE_WIFI = -5; 337 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 338 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 339 340 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 341 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 342 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 343 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 344 345 /* Tracks if state machine has received any screen state change broadcast yet. 346 * We can miss one of these at boot. 347 */ 348 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 349 350 private boolean mBluetoothConnectionActive = false; 351 352 private PowerManager.WakeLock mSuspendWakeLock; 353 354 /** 355 * Interval in milliseconds between polling for RSSI 356 * and linkspeed information 357 */ 358 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 359 360 /** 361 * Interval in milliseconds between receiving a disconnect event 362 * while connected to a good AP, and handling the disconnect proper 363 */ 364 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 365 366 /** 367 * Delay between supplicant restarts upon failure to establish connection 368 */ 369 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 370 371 /** 372 * Number of times we attempt to restart supplicant 373 */ 374 private static final int SUPPLICANT_RESTART_TRIES = 5; 375 376 private int mSupplicantRestartCount = 0; 377 /* Tracks sequence number on stop failure message */ 378 private int mSupplicantStopFailureToken = 0; 379 380 /** 381 * Tether state change notification time out 382 */ 383 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 384 385 /* Tracks sequence number on a tether notification time out */ 386 private int mTetherToken = 0; 387 388 /** 389 * Driver start time out. 390 */ 391 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 392 393 /* Tracks sequence number on a driver time out */ 394 private int mDriverStartToken = 0; 395 396 /** 397 * Don't select new network when previous network selection is 398 * pending connection for this much time 399 */ 400 private static final int CONNECT_TIMEOUT_MSEC = 3000; 401 402 /** 403 * The link properties of the wifi interface. 404 * Do not modify this directly; use updateLinkProperties instead. 405 */ 406 private LinkProperties mLinkProperties; 407 408 /* Tracks sequence number on a periodic scan message */ 409 private int mPeriodicScanToken = 0; 410 411 // Wakelock held during wifi start/stop and driver load/unload 412 private PowerManager.WakeLock mWakeLock; 413 414 private Context mContext; 415 416 private final Object mDhcpResultsLock = new Object(); 417 private DhcpResults mDhcpResults; 418 419 // NOTE: Do not return to clients - use #getWiFiInfoForUid(int) 420 private WifiInfo mWifiInfo; 421 private NetworkInfo mNetworkInfo; 422 private NetworkCapabilities mNetworkCapabilities; 423 private SupplicantStateTracker mSupplicantStateTracker; 424 private BaseDhcpStateMachine mDhcpStateMachine; 425 private boolean mDhcpActive = false; 426 427 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 428 429 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 430 431 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 432 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 433 434 // Roaming failure count 435 private int mRoamFailCount = 0; 436 437 // This is the BSSID we are trying to associate to, it can be set to "any" 438 // if we havent selected a BSSID for joining. 439 // if we havent selected a BSSID for joining. 440 // The BSSID we are associated to is found in mWifiInfo 441 private String mTargetRoamBSSID = "any"; 442 443 private long mLastDriverRoamAttempt = 0; 444 445 private WifiConfiguration targetWificonfiguration = null; 446 447 // Used as debug to indicate which configuration last was saved 448 private WifiConfiguration lastSavedConfigurationAttempt = null; 449 450 // Used as debug to indicate which configuration last was removed 451 private WifiConfiguration lastForgetConfigurationAttempt = null; 452 453 //Random used by softAP channel Selection 454 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 455 456 boolean isRoaming() { 457 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 458 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 459 } 460 461 public void autoRoamSetBSSID(int netId, String bssid) { 462 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 463 } 464 465 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 466 boolean ret = true; 467 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 468 if (bssid == null) bssid = "any"; 469 if (config == null) return false; // Nothing to do 470 471 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 472 return false; // We didnt change anything 473 } 474 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 475 // Changing to ANY 476 if (!mWifiConfigStore.roamOnAny) { 477 ret = false; // Nothing to do 478 } 479 } 480 if (VDBG) { 481 logd("autoRoamSetBSSID " + bssid + " key=" + config.configKey()); 482 } 483 config.autoJoinBSSID = bssid; 484 mTargetRoamBSSID = bssid; 485 mWifiConfigStore.saveWifiConfigBSSID(config); 486 return ret; 487 } 488 489 /** 490 * Save the UID correctly depending on if this is a new or existing network. 491 * @return true if operation is authorized, false otherwise 492 */ 493 boolean recordUidIfAuthorized(WifiConfiguration config, int uid, boolean onlyAnnotate) { 494 if (!mWifiConfigStore.isNetworkConfigured(config)) { 495 config.creatorUid = uid; 496 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 497 } else if (!mWifiConfigStore.canModifyNetwork(uid, config, onlyAnnotate)) { 498 return false; 499 } 500 501 config.lastUpdateUid = uid; 502 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 503 504 return true; 505 506 } 507 508 /** 509 * Checks to see if user has specified if the apps configuration is connectable. 510 * If the user hasn't specified we query the user and return true. 511 * 512 * @param message The message to be deferred 513 * @param netId Network id of the configuration to check against 514 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 515 * CONFIG_OVERRIDE_PERMISSION 516 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 517 */ 518 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 519 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 520 521 // We can only evaluate saved configurations. 522 if (config == null) { 523 logd("deferForUserInput: configuration for netId=" + netId + " not stored"); 524 return true; 525 } 526 527 switch (config.userApproved) { 528 case WifiConfiguration.USER_APPROVED: 529 case WifiConfiguration.USER_BANNED: 530 return false; 531 case WifiConfiguration.USER_PENDING: 532 default: // USER_UNSPECIFIED 533 /* the intention was to ask user here; but a dialog box is * 534 * too invasive; so we are going to allow connection for now */ 535 config.userApproved = WifiConfiguration.USER_APPROVED; 536 return false; 537 } 538 } 539 540 /** 541 * Subset of link properties coming from netlink. 542 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 543 * and domains obtained from router advertisements (RFC 6106). 544 */ 545 private NetlinkTracker mNetlinkTracker; 546 547 private IpReachabilityMonitor mIpReachabilityMonitor; 548 549 private AlarmManager mAlarmManager; 550 private PendingIntent mScanIntent; 551 private PendingIntent mDriverStopIntent; 552 private PendingIntent mPnoIntent; 553 554 private int mDisconnectedPnoAlarmCount = 0; 555 /* Tracks current frequency mode */ 556 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 557 558 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 559 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 560 561 // Channel for sending replies. 562 private AsyncChannel mReplyChannel = new AsyncChannel(); 563 564 private WifiP2pServiceImpl mWifiP2pServiceImpl; 565 566 // Used to initiate a connection with WifiP2pService 567 private AsyncChannel mWifiP2pChannel; 568 private AsyncChannel mWifiApConfigChannel; 569 570 private WifiScanner mWifiScanner; 571 572 private int mConnectionRequests = 0; 573 private WifiNetworkFactory mNetworkFactory; 574 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 575 private WifiNetworkAgent mNetworkAgent; 576 577 private String[] mWhiteListedSsids = null; 578 579 private byte[] mRssiRanges; 580 581 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 582 // We should really persist that into the networkHistory.txt file, and read it back when 583 // WifiStateMachine starts up 584 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 585 586 // Used to filter out requests we couldn't possibly satisfy. 587 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 588 589 /* The base for wifi message types */ 590 static final int BASE = Protocol.BASE_WIFI; 591 /* Start the supplicant */ 592 static final int CMD_START_SUPPLICANT = BASE + 11; 593 /* Stop the supplicant */ 594 static final int CMD_STOP_SUPPLICANT = BASE + 12; 595 /* Start the driver */ 596 static final int CMD_START_DRIVER = BASE + 13; 597 /* Stop the driver */ 598 static final int CMD_STOP_DRIVER = BASE + 14; 599 /* Indicates Static IP succeeded */ 600 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 601 /* Indicates Static IP failed */ 602 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 603 /* Indicates supplicant stop failed */ 604 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 605 /* Delayed stop to avoid shutting down driver too quick*/ 606 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 607 /* A delayed message sent to start driver when it fail to come up */ 608 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 609 610 /* Start the soft access point */ 611 static final int CMD_START_AP = BASE + 21; 612 /* Indicates soft ap start succeeded */ 613 static final int CMD_START_AP_SUCCESS = BASE + 22; 614 /* Indicates soft ap start failed */ 615 static final int CMD_START_AP_FAILURE = BASE + 23; 616 /* Stop the soft access point */ 617 static final int CMD_STOP_AP = BASE + 24; 618 /* Set the soft access point configuration */ 619 static final int CMD_SET_AP_CONFIG = BASE + 25; 620 /* Soft access point configuration set completed */ 621 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 622 /* Request the soft access point configuration */ 623 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 624 /* Response to access point configuration request */ 625 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 626 /* Invoked when getting a tether state change notification */ 627 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 628 /* A delayed message sent to indicate tether state change failed to arrive */ 629 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 630 631 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 632 633 /* Supplicant commands */ 634 /* Is supplicant alive ? */ 635 static final int CMD_PING_SUPPLICANT = BASE + 51; 636 /* Add/update a network configuration */ 637 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 638 /* Delete a network */ 639 static final int CMD_REMOVE_NETWORK = BASE + 53; 640 /* Enable a network. The device will attempt a connection to the given network. */ 641 static final int CMD_ENABLE_NETWORK = BASE + 54; 642 /* Enable all networks */ 643 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 644 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 645 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 646 /* Clear the blacklist network list */ 647 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 648 /* Save configuration */ 649 static final int CMD_SAVE_CONFIG = BASE + 58; 650 /* Get configured networks */ 651 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 652 /* Get available frequencies */ 653 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 654 /* Get adaptors */ 655 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 656 /* Get configured networks with real preSharedKey */ 657 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 658 /* Get Link Layer Stats thru HAL */ 659 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 660 /* Supplicant commands after driver start*/ 661 /* Initiate a scan */ 662 static final int CMD_START_SCAN = BASE + 71; 663 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 664 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 665 /* Disconnect from a network */ 666 static final int CMD_DISCONNECT = BASE + 73; 667 /* Reconnect to a network */ 668 static final int CMD_RECONNECT = BASE + 74; 669 /* Reassociate to a network */ 670 static final int CMD_REASSOCIATE = BASE + 75; 671 /* Get Connection Statistis */ 672 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 673 674 /* Controls suspend mode optimizations 675 * 676 * When high perf mode is enabled, suspend mode optimizations are disabled 677 * 678 * When high perf mode is disabled, suspend mode optimizations are enabled 679 * 680 * Suspend mode optimizations include: 681 * - packet filtering 682 * - turn off roaming 683 * - DTIM wake up settings 684 */ 685 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 686 /* Set the country code */ 687 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 688 /* Enables RSSI poll */ 689 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 690 /* RSSI poll */ 691 static final int CMD_RSSI_POLL = BASE + 83; 692 /* Set up packet filtering */ 693 static final int CMD_START_PACKET_FILTERING = BASE + 84; 694 /* Clear packet filter */ 695 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 696 /* Enable suspend mode optimizations in the driver */ 697 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 698 /* Delayed NETWORK_DISCONNECT */ 699 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 700 /* When there are no saved networks, we do a periodic scan to notify user of 701 * an open network */ 702 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 703 /* Test network Disconnection NETWORK_DISCONNECT */ 704 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 705 706 private int testNetworkDisconnectCounter = 0; 707 708 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 709 static final int MULTICAST_V6 = 1; 710 static final int MULTICAST_V4 = 0; 711 712 /* Set the frequency band */ 713 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 714 /* Enable TDLS on a specific MAC address */ 715 static final int CMD_ENABLE_TDLS = BASE + 92; 716 /* DHCP/IP configuration watchdog */ 717 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 718 719 /** 720 * Watchdog for protecting against b/16823537 721 * Leave time for 4-way handshake to succeed 722 */ 723 static final int ROAM_GUARD_TIMER_MSEC = 15000; 724 725 int roamWatchdogCount = 0; 726 /* Roam state watchdog */ 727 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 728 /* Screen change intent handling */ 729 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 730 731 /* Disconnecting state watchdog */ 732 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 733 734 /* Remove a packages associated configrations */ 735 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 736 737 /* Disable an ephemeral network */ 738 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 739 740 /* Get matching network */ 741 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 742 743 /* alert from firmware */ 744 static final int CMD_FIRMWARE_ALERT = BASE + 100; 745 746 /* SIM is removed; reset any cached data for it */ 747 static final int CMD_RESET_SIM_NETWORKS = BASE + 101; 748 749 /** 750 * Make this timer 40 seconds, which is about the normal DHCP timeout. 751 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 752 * for more than 30 seconds. 753 */ 754 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 755 756 int obtainingIpWatchdogCount = 0; 757 758 /* Commands from/to the SupplicantStateTracker */ 759 /* Reset the supplicant state tracker */ 760 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 761 762 int disconnectingWatchdogCount = 0; 763 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 764 765 /* P2p commands */ 766 /* We are ok with no response here since we wont do much with it anyway */ 767 public static final int CMD_ENABLE_P2P = BASE + 131; 768 /* In order to shut down supplicant cleanly, we wait till p2p has 769 * been disabled */ 770 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 771 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 772 773 public static final int CMD_BOOT_COMPLETED = BASE + 134; 774 775 /* We now have a valid IP configuration. */ 776 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 777 /* We no longer have a valid IP configuration. */ 778 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 779 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 780 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 781 782 /* Supplicant is trying to associate to a given BSSID */ 783 static final int CMD_TARGET_BSSID = BASE + 141; 784 785 /* Reload all networks and reconnect */ 786 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 787 788 static final int CMD_AUTO_CONNECT = BASE + 143; 789 790 private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; 791 private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; 792 private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; 793 794 static final int CMD_UNWANTED_NETWORK = BASE + 144; 795 796 static final int CMD_AUTO_ROAM = BASE + 145; 797 798 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 799 800 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 801 802 static final int CMD_NETWORK_STATUS = BASE + 148; 803 804 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 805 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 806 807 /* Remove a packages associated configrations */ 808 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 809 810 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 811 812 /* used to restart PNO when it was stopped due to association attempt */ 813 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 154; 814 815 static int mRestartAutoJoinOffloadCounter = 0; 816 817 /* used to log if PNO was started */ 818 static final int CMD_STARTED_PNO_DBG = BASE + 155; 819 820 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 821 822 /* used to log if PNO was started */ 823 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 158; 824 825 /* used to log if GSCAN was started */ 826 static final int CMD_STARTED_GSCAN_DBG = BASE + 159; 827 828 /* used to offload sending IP packet */ 829 static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; 830 831 /* used to stop offload sending IP packet */ 832 static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; 833 834 /* used to start rssi monitoring in hw */ 835 static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; 836 837 /* used to stop rssi moniroting in hw */ 838 static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; 839 840 /* used to indicated RSSI threshold breach in hw */ 841 static final int CMD_RSSI_THRESHOLD_BREACH = BASE + 164; 842 843 844 845 /* Wifi state machine modes of operation */ 846 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 847 public static final int CONNECT_MODE = 1; 848 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 849 public static final int SCAN_ONLY_MODE = 2; 850 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 851 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 852 853 private static final int SUCCESS = 1; 854 private static final int FAILURE = -1; 855 856 /* Tracks if suspend optimizations need to be disabled by DHCP, 857 * screen or due to high perf mode. 858 * When any of them needs to disable it, we keep the suspend optimizations 859 * disabled 860 */ 861 private int mSuspendOptNeedsDisabled = 0; 862 863 private static final int SUSPEND_DUE_TO_DHCP = 1; 864 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 865 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 866 867 /* Tracks if user has enabled suspend optimizations through settings */ 868 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 869 870 /** 871 * Default framework scan interval in milliseconds. This is used in the scenario in which 872 * wifi chipset does not support background scanning to set up a 873 * periodic wake up scan so that the device can connect to a new access 874 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 875 * override this. 876 */ 877 private final int mDefaultFrameworkScanIntervalMs; 878 879 880 /** 881 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 882 */ 883 private final int mNoNetworksPeriodicScan; 884 885 /** 886 * Supplicant scan interval in milliseconds. 887 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 888 * from the default config if the setting is not set 889 */ 890 private long mSupplicantScanIntervalMs; 891 892 /** 893 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 894 */ 895 private long lastFullBandConnectedTimeMilli; 896 897 /** 898 * time interval to the next full band scan we will perform for 899 * autojoin while connected with screen lit 900 */ 901 private long fullBandConnectedTimeIntervalMilli; 902 903 /** 904 * max time interval to the next full band scan we will perform for 905 * autojoin while connected with screen lit 906 * Max time is 5 minutes 907 */ 908 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 909 910 /** 911 * Minimum time interval between enabling all networks. 912 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 913 * due to enabling every time. We add a threshold to avoid this. 914 */ 915 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 916 private long mLastEnableAllNetworksTime; 917 918 int mRunningBeaconCount = 0; 919 920 /** 921 * Starting and shutting down driver too quick causes problems leading to driver 922 * being in a bad state. Delay driver stop. 923 */ 924 private final int mDriverStopDelayMs; 925 private int mDelayedStopCounter; 926 private boolean mInDelayedStop = false; 927 928 // config option that indicate whether or not to reset country code to default when 929 // cellular radio indicates country code loss 930 private boolean mRevertCountryCodeOnCellularLoss = false; 931 932 private String mDefaultCountryCode; 933 934 private static final String BOOT_DEFAULT_WIFI_COUNTRY_CODE = "ro.boot.wificountrycode"; 935 936 // Supplicant doesn't like setting the same country code multiple times (it may drop 937 // currently connected network), so we save the current device set country code here to avoid 938 // redundency 939 private String mDriverSetCountryCode = null; 940 941 /* Default parent state */ 942 private State mDefaultState = new DefaultState(); 943 /* Temporary initial state */ 944 private State mInitialState = new InitialState(); 945 /* Driver loaded, waiting for supplicant to start */ 946 private State mSupplicantStartingState = new SupplicantStartingState(); 947 /* Driver loaded and supplicant ready */ 948 private State mSupplicantStartedState = new SupplicantStartedState(); 949 /* Waiting for supplicant to stop and monitor to exit */ 950 private State mSupplicantStoppingState = new SupplicantStoppingState(); 951 /* Driver start issued, waiting for completed event */ 952 private State mDriverStartingState = new DriverStartingState(); 953 /* Driver started */ 954 private State mDriverStartedState = new DriverStartedState(); 955 /* Wait until p2p is disabled 956 * This is a special state which is entered right after we exit out of DriverStartedState 957 * before transitioning to another state. 958 */ 959 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 960 /* Driver stopping */ 961 private State mDriverStoppingState = new DriverStoppingState(); 962 /* Driver stopped */ 963 private State mDriverStoppedState = new DriverStoppedState(); 964 /* Scan for networks, no connection will be established */ 965 private State mScanModeState = new ScanModeState(); 966 /* Connecting to an access point */ 967 private State mConnectModeState = new ConnectModeState(); 968 /* Connected at 802.11 (L2) level */ 969 private State mL2ConnectedState = new L2ConnectedState(); 970 /* fetching IP after connection to access point (assoc+auth complete) */ 971 private State mObtainingIpState = new ObtainingIpState(); 972 /* Waiting for link quality verification to be complete */ 973 private State mVerifyingLinkState = new VerifyingLinkState(); 974 /* Connected with IP addr */ 975 private State mConnectedState = new ConnectedState(); 976 /* Roaming */ 977 private State mRoamingState = new RoamingState(); 978 /* disconnect issued, waiting for network disconnect confirmation */ 979 private State mDisconnectingState = new DisconnectingState(); 980 /* Network is not connected, supplicant assoc+auth is not complete */ 981 private State mDisconnectedState = new DisconnectedState(); 982 /* Waiting for WPS to be completed*/ 983 private State mWpsRunningState = new WpsRunningState(); 984 985 /* Soft ap is starting up */ 986 private State mSoftApStartingState = new SoftApStartingState(); 987 /* Soft ap is running */ 988 private State mSoftApStartedState = new SoftApStartedState(); 989 /* Soft ap is running and we are waiting for tether notification */ 990 private State mTetheringState = new TetheringState(); 991 /* Soft ap is running and we are tethered through connectivity service */ 992 private State mTetheredState = new TetheredState(); 993 /* Waiting for untether confirmation before stopping soft Ap */ 994 private State mUntetheringState = new UntetheringState(); 995 996 997 998 private class WifiScanListener implements WifiScanner.ScanListener { 999 @Override 1000 public void onSuccess() { 1001 Log.e(TAG, "WifiScanListener onSuccess"); 1002 }; 1003 @Override 1004 public void onFailure(int reason, String description) { 1005 Log.e(TAG, "WifiScanListener onFailure"); 1006 }; 1007 @Override 1008 public void onPeriodChanged(int periodInMs) { 1009 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 1010 } 1011 @Override 1012 public void onResults(WifiScanner.ScanData[] results) { 1013 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 1014 } 1015 @Override 1016 public void onFullResult(ScanResult fullScanResult) { 1017 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 1018 } 1019 1020 WifiScanListener() {} 1021 } 1022 1023 WifiScanListener mWifiScanListener = new WifiScanListener(); 1024 1025 1026 private class TetherStateChange { 1027 ArrayList<String> available; 1028 ArrayList<String> active; 1029 1030 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 1031 available = av; 1032 active = ac; 1033 } 1034 } 1035 1036 public static class SimAuthRequestData { 1037 int networkId; 1038 int protocol; 1039 String ssid; 1040 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 1041 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 1042 String[] data; 1043 } 1044 1045 /** 1046 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 1047 * {@link WifiManager#WIFI_STATE_DISABLING}, 1048 * {@link WifiManager#WIFI_STATE_ENABLED}, 1049 * {@link WifiManager#WIFI_STATE_ENABLING}, 1050 * {@link WifiManager#WIFI_STATE_UNKNOWN} 1051 */ 1052 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 1053 1054 /** 1055 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 1056 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 1057 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 1058 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 1059 * {@link WifiManager#WIFI_AP_STATE_FAILED} 1060 */ 1061 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 1062 1063 private static final int SCAN_REQUEST = 0; 1064 private static final String ACTION_START_SCAN = 1065 "com.android.server.WifiManager.action.START_SCAN"; 1066 1067 private static final int PNO_START_REQUEST = 0; 1068 private static final String ACTION_START_PNO = 1069 "com.android.server.WifiManager.action.START_PNO"; 1070 1071 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 1072 private static final int DRIVER_STOP_REQUEST = 0; 1073 private static final String ACTION_DELAYED_DRIVER_STOP = 1074 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 1075 1076 /** 1077 * Keep track of whether WIFI is running. 1078 */ 1079 private boolean mIsRunning = false; 1080 1081 /** 1082 * Keep track of whether we last told the battery stats we had started. 1083 */ 1084 private boolean mReportedRunning = false; 1085 1086 /** 1087 * Most recently set source of starting WIFI. 1088 */ 1089 private final WorkSource mRunningWifiUids = new WorkSource(); 1090 1091 /** 1092 * The last reported UIDs that were responsible for starting WIFI. 1093 */ 1094 private final WorkSource mLastRunningWifiUids = new WorkSource(); 1095 1096 private final IBatteryStats mBatteryStats; 1097 1098 private String mTcpBufferSizes = null; 1099 1100 // Used for debug and stats gathering 1101 private static int sScanAlarmIntentCount = 0; 1102 1103 final static int frameworkMinScanIntervalSaneValue = 10000; 1104 1105 boolean mPnoEnabled; 1106 boolean mLazyRoamEnabled; 1107 long mGScanStartTimeMilli; 1108 long mGScanPeriodMilli; 1109 1110 public WifiStateMachine(Context context, String wlanInterface, 1111 WifiTrafficPoller trafficPoller) { 1112 super("WifiStateMachine"); 1113 mContext = context; 1114 mInterfaceName = wlanInterface; 1115 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1116 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1117 BatteryStats.SERVICE_NAME)); 1118 1119 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1120 mNwService = INetworkManagementService.Stub.asInterface(b); 1121 1122 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1123 PackageManager.FEATURE_WIFI_DIRECT); 1124 1125 mWifiNative = new WifiNative(mInterfaceName, mContext); 1126 mWifiConfigStore = new WifiConfigStore(context,this, mWifiNative); 1127 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1128 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1129 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1130 1131 boolean enableFirmwareLogs = mContext.getResources().getBoolean( 1132 R.bool.config_wifi_enable_wifi_firmware_debugging); 1133 1134 if (enableFirmwareLogs) { 1135 mWifiLogger = new WifiLogger(this); 1136 } else { 1137 mWifiLogger = new DummyWifiLogger(); 1138 } 1139 1140 mWifiInfo = new WifiInfo(); 1141 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1142 getHandler()); 1143 mLinkProperties = new LinkProperties(); 1144 1145 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1146 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1147 1148 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1149 1150 mNetworkInfo.setIsAvailable(false); 1151 mLastBssid = null; 1152 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1153 mLastSignalLevel = -1; 1154 1155 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1156 public void update() { 1157 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1158 } 1159 }); 1160 try { 1161 mNwService.registerObserver(mNetlinkTracker); 1162 } catch (RemoteException e) { 1163 loge("Couldn't register netlink tracker: " + e.toString()); 1164 } 1165 1166 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1167 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1168 mPnoIntent = getPrivateBroadcast(ACTION_START_PNO, PNO_START_REQUEST); 1169 1170 // Make sure the interval is not configured less than 10 seconds 1171 int period = mContext.getResources().getInteger( 1172 R.integer.config_wifi_framework_scan_interval); 1173 if (period < frameworkMinScanIntervalSaneValue) { 1174 period = frameworkMinScanIntervalSaneValue; 1175 } 1176 mDefaultFrameworkScanIntervalMs = period; 1177 1178 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1179 R.integer.config_wifi_no_network_periodic_scan_interval); 1180 1181 mDriverStopDelayMs = mContext.getResources().getInteger( 1182 R.integer.config_wifi_driver_stop_delay); 1183 1184 mBackgroundScanSupported = mContext.getResources().getBoolean( 1185 R.bool.config_wifi_background_scan_support); 1186 1187 mPrimaryDeviceType = mContext.getResources().getString( 1188 R.string.config_wifi_p2p_device_type); 1189 1190 mRevertCountryCodeOnCellularLoss = mContext.getResources().getBoolean( 1191 R.bool.config_wifi_revert_country_code_on_cellular_loss); 1192 1193 mDefaultCountryCode = SystemProperties.get(BOOT_DEFAULT_WIFI_COUNTRY_CODE); 1194 if (TextUtils.isEmpty(mDefaultCountryCode) == false) { 1195 mDefaultCountryCode = mDefaultCountryCode.toUpperCase(Locale.ROOT); 1196 } 1197 1198 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode)) { 1199 logw("config_wifi_revert_country_code_on_cellular_loss is set, " + 1200 "but there is no default country code!! Resetting ..."); 1201 mRevertCountryCodeOnCellularLoss = false; 1202 } else if (mRevertCountryCodeOnCellularLoss) { 1203 logd("initializing with and will revert to " + mDefaultCountryCode + " on MCC loss"); 1204 } 1205 1206 if (mRevertCountryCodeOnCellularLoss) { 1207 Settings.Global.putString(mContext.getContentResolver(), 1208 Settings.Global.WIFI_COUNTRY_CODE, mDefaultCountryCode); 1209 } 1210 1211 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1212 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1213 1214 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1215 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1216 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1217 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1218 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1219 // TODO - needs to be a bit more dynamic 1220 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1221 1222 mContext.registerReceiver( 1223 new BroadcastReceiver() { 1224 @Override 1225 public void onReceive(Context context, Intent intent) { 1226 ArrayList<String> available = intent.getStringArrayListExtra( 1227 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1228 ArrayList<String> active = intent.getStringArrayListExtra( 1229 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1230 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1231 } 1232 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1233 1234 mContext.registerReceiver( 1235 new BroadcastReceiver() { 1236 @Override 1237 public void onReceive(Context context, Intent intent) { 1238 sScanAlarmIntentCount++; // Used for debug only 1239 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1240 if (VDBG) 1241 logd("SCAN ALARM -> " + mDelayedScanCounter.get()); 1242 } 1243 }, 1244 new IntentFilter(ACTION_START_SCAN)); 1245 1246 mContext.registerReceiver( 1247 new BroadcastReceiver() { 1248 @Override 1249 public void onReceive(Context context, Intent intent) { 1250 sendMessage(CMD_RESTART_AUTOJOIN_OFFLOAD, 0, 1251 mRestartAutoJoinOffloadCounter, "pno alarm"); 1252 if (DBG) 1253 logd("PNO START ALARM sent"); 1254 } 1255 }, 1256 new IntentFilter(ACTION_START_PNO)); 1257 1258 1259 IntentFilter filter = new IntentFilter(); 1260 filter.addAction(Intent.ACTION_SCREEN_ON); 1261 filter.addAction(Intent.ACTION_SCREEN_OFF); 1262 mContext.registerReceiver( 1263 new BroadcastReceiver() { 1264 @Override 1265 public void onReceive(Context context, Intent intent) { 1266 String action = intent.getAction(); 1267 1268 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1269 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1270 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1271 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1272 } 1273 } 1274 }, filter); 1275 1276 mContext.registerReceiver( 1277 new BroadcastReceiver() { 1278 @Override 1279 public void onReceive(Context context, Intent intent) { 1280 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1281 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1282 } 1283 }, 1284 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1285 1286 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1287 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1288 new ContentObserver(getHandler()) { 1289 @Override 1290 public void onChange(boolean selfChange) { 1291 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1292 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1293 } 1294 }); 1295 1296 mContext.registerReceiver( 1297 new BroadcastReceiver() { 1298 @Override 1299 public void onReceive(Context context, Intent intent) { 1300 sendMessage(CMD_BOOT_COMPLETED); 1301 } 1302 }, 1303 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1304 1305 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1306 1307 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1308 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1309 1310 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1311 mSuspendWakeLock.setReferenceCounted(false); 1312 1313 mTcpBufferSizes = mContext.getResources().getString( 1314 com.android.internal.R.string.config_wifi_tcp_buffers); 1315 1316 addState(mDefaultState); 1317 addState(mInitialState, mDefaultState); 1318 addState(mSupplicantStartingState, mDefaultState); 1319 addState(mSupplicantStartedState, mDefaultState); 1320 addState(mDriverStartingState, mSupplicantStartedState); 1321 addState(mDriverStartedState, mSupplicantStartedState); 1322 addState(mScanModeState, mDriverStartedState); 1323 addState(mConnectModeState, mDriverStartedState); 1324 addState(mL2ConnectedState, mConnectModeState); 1325 addState(mObtainingIpState, mL2ConnectedState); 1326 addState(mVerifyingLinkState, mL2ConnectedState); 1327 addState(mConnectedState, mL2ConnectedState); 1328 addState(mRoamingState, mL2ConnectedState); 1329 addState(mDisconnectingState, mConnectModeState); 1330 addState(mDisconnectedState, mConnectModeState); 1331 addState(mWpsRunningState, mConnectModeState); 1332 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1333 addState(mDriverStoppingState, mSupplicantStartedState); 1334 addState(mDriverStoppedState, mSupplicantStartedState); 1335 addState(mSupplicantStoppingState, mDefaultState); 1336 addState(mSoftApStartingState, mDefaultState); 1337 addState(mSoftApStartedState, mDefaultState); 1338 addState(mTetheringState, mSoftApStartedState); 1339 addState(mTetheredState, mSoftApStartedState); 1340 addState(mUntetheringState, mSoftApStartedState); 1341 1342 setInitialState(mInitialState); 1343 1344 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1345 setLogOnlyTransitions(false); 1346 if (VDBG) setDbg(true); 1347 1348 //start the state machine 1349 start(); 1350 1351 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1352 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1353 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1354 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1355 } 1356 1357 1358 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1359 Intent intent = new Intent(action, null); 1360 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1361 // TODO: Find the correct value so this is not hard coded 1362 intent.setPackage("android"); 1363 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1364 } 1365 1366 private int mVerboseLoggingLevel = 0; 1367 1368 int getVerboseLoggingLevel() { 1369 return mVerboseLoggingLevel; 1370 } 1371 1372 void enableVerboseLogging(int verbose) { 1373 mVerboseLoggingLevel = verbose; 1374 if (verbose > 0) { 1375 DBG = true; 1376 VDBG = true; 1377 PDBG = true; 1378 mLogMessages = true; 1379 mWifiNative.setSupplicantLogLevel("DEBUG"); 1380 } else { 1381 DBG = false; 1382 VDBG = false; 1383 PDBG = false; 1384 mLogMessages = false; 1385 mWifiNative.setSupplicantLogLevel("INFO"); 1386 } 1387 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1388 mWifiAutoJoinController.enableVerboseLogging(verbose); 1389 mWifiMonitor.enableVerboseLogging(verbose); 1390 mWifiNative.enableVerboseLogging(verbose); 1391 mWifiConfigStore.enableVerboseLogging(verbose); 1392 mSupplicantStateTracker.enableVerboseLogging(verbose); 1393 } 1394 1395 public void setHalBasedAutojoinOffload(int enabled) { 1396 // Shoult be used for debug only, triggered form developper settings 1397 // enabling HAl based PNO dynamically is not safe and not a normal operation 1398 mHalBasedPnoEnableInDevSettings = enabled > 0; 1399 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1400 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1401 sendMessage(CMD_DISCONNECT); 1402 } 1403 1404 int getHalBasedAutojoinOffload() { 1405 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1406 } 1407 1408 boolean useHalBasedAutoJoinOffload() { 1409 // all three settings need to be true: 1410 // - developper settings switch 1411 // - driver support 1412 // - config option 1413 return mHalBasedPnoEnableInDevSettings 1414 && mHalBasedPnoDriverSupported 1415 && mWifiConfigStore.enableHalBasedPno.get(); 1416 } 1417 1418 boolean allowFullBandScanAndAssociated() { 1419 1420 if (!getEnableAutoJoinWhenAssociated()) { 1421 if (DBG) { 1422 Log.e(TAG, "allowFullBandScanAndAssociated: " 1423 + " enableAutoJoinWhenAssociated : disallow"); 1424 } 1425 return false; 1426 } 1427 1428 if (mWifiInfo.txSuccessRate > 1429 mWifiConfigStore.maxTxPacketForFullScans 1430 || mWifiInfo.rxSuccessRate > 1431 mWifiConfigStore.maxRxPacketForFullScans) { 1432 if (DBG) { 1433 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1434 + mWifiInfo.txSuccessRate + " rx " 1435 + mWifiInfo.rxSuccessRate 1436 + " allow scan with traffic " + getAllowScansWithTraffic()); 1437 } 1438 // Too much traffic at the interface, hence no full band scan 1439 if (getAllowScansWithTraffic() == 0) { 1440 return false; 1441 } 1442 } 1443 1444 if (getCurrentState() != mConnectedState) { 1445 if (DBG) { 1446 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1447 } 1448 return false; 1449 } 1450 1451 return true; 1452 } 1453 1454 long mLastScanPermissionUpdate = 0; 1455 boolean mConnectedModeGScanOffloadStarted = false; 1456 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1457 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1458 // we want to throttle the GScan Stop->Start transition 1459 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1460 void updateAssociatedScanPermission() { 1461 1462 if (useHalBasedAutoJoinOffload()) { 1463 boolean allowed = allowFullBandScanAndAssociated(); 1464 1465 long now = System.currentTimeMillis(); 1466 if (mConnectedModeGScanOffloadStarted && !allowed) { 1467 if (DBG) { 1468 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1469 } 1470 stopPnoOffload(); 1471 stopGScan(" useHalBasedAutoJoinOffload"); 1472 } 1473 if (!mConnectedModeGScanOffloadStarted && allowed) { 1474 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1475 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1476 // to look for 5GHz BSSIDs and better networks 1477 if (DBG) { 1478 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1479 } 1480 startGScanConnectedModeOffload("updatePermission " 1481 + (now - mLastScanPermissionUpdate) + "ms"); 1482 mLastScanPermissionUpdate = now; 1483 } 1484 } 1485 } 1486 } 1487 1488 private int mAggressiveHandover = 0; 1489 1490 int getAggressiveHandover() { 1491 return mAggressiveHandover; 1492 } 1493 1494 void enableAggressiveHandover(int enabled) { 1495 mAggressiveHandover = enabled; 1496 } 1497 1498 public void clearANQPCache() { 1499 mWifiConfigStore.trimANQPCache(true); 1500 } 1501 1502 public void setAllowScansWithTraffic(int enabled) { 1503 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1504 } 1505 1506 public int getAllowScansWithTraffic() { 1507 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1508 } 1509 1510 public boolean enableAutoJoinWhenAssociated(boolean enabled) { 1511 boolean old_state = getEnableAutoJoinWhenAssociated(); 1512 mWifiConfigStore.enableAutoJoinWhenAssociated.set(enabled); 1513 if (!old_state && enabled && mScreenOn && getCurrentState() == mConnectedState) { 1514 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), null, 1515 null); 1516 } 1517 return true; 1518 } 1519 1520 public boolean getEnableAutoJoinWhenAssociated() { 1521 return mWifiConfigStore.enableAutoJoinWhenAssociated.get(); 1522 } 1523 /* 1524 * 1525 * Framework scan control 1526 */ 1527 1528 private boolean mAlarmEnabled = false; 1529 1530 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1531 1532 private void setScanAlarm(boolean enabled) { 1533 if (PDBG) { 1534 String state; 1535 if (enabled) state = "enabled"; else state = "disabled"; 1536 logd("setScanAlarm " + state 1537 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1538 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1539 } 1540 if (mBackgroundScanSupported == false) { 1541 // Scan alarm is only used for background scans if they are not 1542 // offloaded to the wifi chipset, hence enable the scan alarm 1543 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1544 enabled = true; 1545 } 1546 1547 if (enabled == mAlarmEnabled) return; 1548 if (enabled) { 1549 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1550 /* going to wake up the host processor to look for access points */ 1551 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1552 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1553 mScanIntent); 1554 mAlarmEnabled = true; 1555 } else { 1556 mAlarmManager.cancel(mScanIntent); 1557 mAlarmEnabled = false; 1558 } 1559 } 1560 1561 private void cancelDelayedScan() { 1562 mDelayedScanCounter.incrementAndGet(); 1563 } 1564 1565 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1566 ScanSettings settings, WorkSource workSource) { 1567 1568 if (counter != mDelayedScanCounter.get()) { 1569 return false; 1570 } 1571 if (restart) 1572 startDelayedScan(milli, settings, workSource); 1573 return true; 1574 } 1575 1576 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1577 if (milli <= 0) return; 1578 /** 1579 * The cases where the scan alarm should be run are : 1580 * - DisconnectedState && screenOn => used delayed timer 1581 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1582 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1583 * - ConnectedState && screenOn => used delayed timer 1584 */ 1585 1586 mDelayedScanCounter.incrementAndGet(); 1587 if (mScreenOn && 1588 (getCurrentState() == mDisconnectedState 1589 || getCurrentState() == mConnectedState)) { 1590 Bundle bundle = new Bundle(); 1591 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1592 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1593 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1594 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1595 mDelayedScanCounter.get(), bundle, milli); 1596 if (DBG) logd("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1597 } else if (mBackgroundScanSupported == false 1598 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1599 setScanAlarm(true); 1600 if (DBG) logd("startDelayedScan start scan alarm -> " 1601 + mDelayedScanCounter + " milli " + milli); 1602 } else { 1603 if (DBG) logd("startDelayedScan unhandled -> " 1604 + mDelayedScanCounter + " milli " + milli); 1605 } 1606 } 1607 1608 private boolean setRandomMacOui() { 1609 String oui = mContext.getResources().getString( 1610 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1611 String[] ouiParts = oui.split("-"); 1612 byte[] ouiBytes = new byte[3]; 1613 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1614 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1615 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1616 1617 logd("Setting OUI to " + oui); 1618 return mWifiNative.setScanningMacOui(ouiBytes); 1619 } 1620 1621 /** 1622 * ****************************************************** 1623 * Methods exposed for public use 1624 * ****************************************************** 1625 */ 1626 1627 public Messenger getMessenger() { 1628 return new Messenger(getHandler()); 1629 } 1630 1631 public WifiMonitor getWifiMonitor() { 1632 return mWifiMonitor; 1633 } 1634 1635 /** 1636 * TODO: doc 1637 */ 1638 public boolean syncPingSupplicant(AsyncChannel channel) { 1639 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1640 boolean result = (resultMsg.arg1 != FAILURE); 1641 resultMsg.recycle(); 1642 return result; 1643 } 1644 1645 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1646 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1647 List<WifiChannel> list = null; 1648 if (resultMsg.obj != null) { 1649 list = new ArrayList<WifiChannel>(); 1650 String freqs = (String) resultMsg.obj; 1651 String[] lines = freqs.split("\n"); 1652 for (String line : lines) 1653 if (line.contains("MHz")) { 1654 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1655 WifiChannel c = new WifiChannel(); 1656 String[] prop = line.split(" "); 1657 if (prop.length < 5) continue; 1658 try { 1659 c.channelNum = Integer.parseInt(prop[1]); 1660 c.freqMHz = Integer.parseInt(prop[3]); 1661 } catch (NumberFormatException e) { 1662 } 1663 c.isDFS = line.contains("(DFS)"); 1664 list.add(c); 1665 } else if (line.contains("Mode[B] Channels:")) { 1666 // B channels are the same as G channels, skipped 1667 break; 1668 } 1669 } 1670 resultMsg.recycle(); 1671 return (list != null && list.size() > 0) ? list : null; 1672 } 1673 1674 /** 1675 * When settings allowing making use of untrusted networks change, trigger a scan 1676 * so as to kick of autojoin. 1677 */ 1678 public void startScanForUntrustedSettingChange() { 1679 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1680 } 1681 1682 /** 1683 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1684 * given to callingUid. 1685 * 1686 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1687 * workSource is specified. 1688 * @param workSource If not null, blame is given to workSource. 1689 * @param settings Scan settings, see {@link ScanSettings}. 1690 */ 1691 public void startScan(int callingUid, int scanCounter, 1692 ScanSettings settings, WorkSource workSource) { 1693 Bundle bundle = new Bundle(); 1694 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1695 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1696 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1697 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1698 } 1699 1700 // called from BroadcastListener 1701 1702 /** 1703 * Start reading new scan data 1704 * Data comes in as: 1705 * "scancount=5\n" 1706 * "nextcount=5\n" 1707 * "apcount=3\n" 1708 * "trunc\n" (optional) 1709 * "bssid=...\n" 1710 * "ssid=...\n" 1711 * "freq=...\n" (in Mhz) 1712 * "level=...\n" 1713 * "dist=...\n" (in cm) 1714 * "distsd=...\n" (standard deviation, in cm) 1715 * "====" 1716 * "bssid=...\n" 1717 * etc 1718 * "====" 1719 * "bssid=...\n" 1720 * etc 1721 * "%%%%" 1722 * "apcount=2\n" 1723 * "bssid=...\n" 1724 * etc 1725 * "%%%% 1726 * etc 1727 * "----" 1728 */ 1729 private final static boolean DEBUG_PARSE = false; 1730 1731 private long mDisconnectedTimeStamp = 0; 1732 1733 public long getDisconnectedTimeMilli() { 1734 if (getCurrentState() == mDisconnectedState 1735 && mDisconnectedTimeStamp != 0) { 1736 long now_ms = System.currentTimeMillis(); 1737 return now_ms - mDisconnectedTimeStamp; 1738 } 1739 return 0; 1740 } 1741 1742 // Keeping track of scan requests 1743 private long lastStartScanTimeStamp = 0; 1744 private long lastScanDuration = 0; 1745 // Last connect attempt is used to prevent scan requests: 1746 // - for a period of 10 seconds after attempting to connect 1747 private long lastConnectAttemptTimestamp = 0; 1748 private String lastScanFreqs = null; 1749 1750 // For debugging, keep track of last message status handling 1751 // TODO, find an equivalent mechanism as part of parent class 1752 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1753 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1754 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1755 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1756 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1757 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1758 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1759 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1760 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1761 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1762 1763 private int messageHandlingStatus = 0; 1764 1765 //TODO: this is used only to track connection attempts, however the link state and packet per 1766 //TODO: second logic should be folded into that 1767 private boolean checkOrDeferScanAllowed(Message msg) { 1768 long now = System.currentTimeMillis(); 1769 if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) { 1770 Message dmsg = Message.obtain(msg); 1771 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp)); 1772 return false; 1773 } 1774 return true; 1775 } 1776 1777 private int mOnTime = 0; 1778 private int mTxTime = 0; 1779 private int mRxTime = 0; 1780 private int mOnTimeStartScan = 0; 1781 private int mTxTimeStartScan = 0; 1782 private int mRxTimeStartScan = 0; 1783 private int mOnTimeScan = 0; 1784 private int mTxTimeScan = 0; 1785 private int mRxTimeScan = 0; 1786 private int mOnTimeThisScan = 0; 1787 private int mTxTimeThisScan = 0; 1788 private int mRxTimeThisScan = 0; 1789 1790 private int mOnTimeScreenStateChange = 0; 1791 private int mOnTimeAtLastReport = 0; 1792 private long lastOntimeReportTimeStamp = 0; 1793 private long lastScreenStateChangeTimeStamp = 0; 1794 private int mOnTimeLastReport = 0; 1795 private int mTxTimeLastReport = 0; 1796 private int mRxTimeLastReport = 0; 1797 1798 private long lastLinkLayerStatsUpdate = 0; 1799 1800 String reportOnTime() { 1801 long now = System.currentTimeMillis(); 1802 StringBuilder sb = new StringBuilder(); 1803 // Report stats since last report 1804 int on = mOnTime - mOnTimeLastReport; 1805 mOnTimeLastReport = mOnTime; 1806 int tx = mTxTime - mTxTimeLastReport; 1807 mTxTimeLastReport = mTxTime; 1808 int rx = mRxTime - mRxTimeLastReport; 1809 mRxTimeLastReport = mRxTime; 1810 int period = (int) (now - lastOntimeReportTimeStamp); 1811 lastOntimeReportTimeStamp = now; 1812 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1813 // Report stats since Screen State Changed 1814 on = mOnTime - mOnTimeScreenStateChange; 1815 period = (int) (now - lastScreenStateChangeTimeStamp); 1816 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1817 return sb.toString(); 1818 } 1819 1820 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1821 WifiLinkLayerStats stats = null; 1822 if (mWifiLinkLayerStatsSupported > 0) { 1823 String name = "wlan0"; 1824 stats = mWifiNative.getWifiLinkLayerStats(name); 1825 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1826 mWifiLinkLayerStatsSupported -= 1; 1827 } else if (stats != null) { 1828 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1829 mOnTime = stats.on_time; 1830 mTxTime = stats.tx_time; 1831 mRxTime = stats.rx_time; 1832 mRunningBeaconCount = stats.beacon_rx; 1833 } 1834 } 1835 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1836 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1837 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1838 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1839 } else { 1840 mWifiInfo.updatePacketRates(stats); 1841 } 1842 if (useHalBasedAutoJoinOffload()) { 1843 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1844 } 1845 return stats; 1846 } 1847 1848 void startRadioScanStats() { 1849 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1850 if (stats != null) { 1851 mOnTimeStartScan = stats.on_time; 1852 mTxTimeStartScan = stats.tx_time; 1853 mRxTimeStartScan = stats.rx_time; 1854 mOnTime = stats.on_time; 1855 mTxTime = stats.tx_time; 1856 mRxTime = stats.rx_time; 1857 } 1858 } 1859 1860 void closeRadioScanStats() { 1861 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1862 if (stats != null) { 1863 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1864 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1865 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1866 mOnTimeScan += mOnTimeThisScan; 1867 mTxTimeScan += mTxTimeThisScan; 1868 mRxTimeScan += mRxTimeThisScan; 1869 } 1870 } 1871 1872 int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { 1873 int ret = mWifiNative.startSendingOffloadedPacket(slot, packetData, intervalSeconds * 1000); 1874 if (ret != 0) { 1875 loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + 1876 "): hardware error " + ret); 1877 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1878 } else { 1879 return ConnectivityManager.PacketKeepalive.SUCCESS; 1880 } 1881 } 1882 1883 int stopWifiIPPacketOffload(int slot) { 1884 int ret = mWifiNative.stopSendingOffloadedPacket(slot); 1885 if (ret != 0) { 1886 loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); 1887 return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR; 1888 } else { 1889 return ConnectivityManager.PacketKeepalive.SUCCESS; 1890 } 1891 } 1892 1893 int startRssiMonitoringOffload(byte maxRssi, byte minRssi) { 1894 return mWifiNative.startRssiMonitoring(maxRssi, minRssi, WifiStateMachine.this); 1895 } 1896 1897 int stopRssiMonitoringOffload() { 1898 return mWifiNative.stopRssiMonitoring(); 1899 } 1900 1901 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1902 private void noteScanStart(int callingUid, WorkSource workSource) { 1903 if (lastStartScanTimeStamp != 0) { 1904 noteScanEnd(); 1905 } 1906 long now = System.currentTimeMillis(); 1907 lastStartScanTimeStamp = now; 1908 lastScanDuration = 0; 1909 if (DBG) { 1910 String ts = String.format("[%,d ms]", now); 1911 if (workSource != null) { 1912 if (DBG) logd(ts + " noteScanStart" + workSource.toString() 1913 + " uid " + Integer.toString(callingUid)); 1914 } else { 1915 if (DBG) logd(ts + " noteScanstart no scan source" 1916 + " uid " + Integer.toString(callingUid)); 1917 } 1918 } 1919 startRadioScanStats(); 1920 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1921 && callingUid != SCAN_ALARM_SOURCE) 1922 || workSource != null)) { 1923 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1924 1925 if (mScanWorkSource.size() == 1 && mScanWorkSource.get(0) < 0) { 1926 // WiFi uses negative UIDs to mean special things. BatteryStats don't care! 1927 mScanWorkSource = new WorkSource(Process.WIFI_UID); 1928 } 1929 1930 try { 1931 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1932 } catch (RemoteException e) { 1933 log(e.toString()); 1934 } 1935 } 1936 } 1937 1938 private void noteScanEnd() { 1939 closeRadioScanStats(); 1940 long now = System.currentTimeMillis(); 1941 if (lastStartScanTimeStamp != 0) { 1942 lastScanDuration = now - lastStartScanTimeStamp; 1943 } 1944 lastStartScanTimeStamp = 0; 1945 if (DBG) { 1946 String ts = String.format("[%,d ms]", now); 1947 if (mScanWorkSource != null) 1948 logd(ts + " noteScanEnd " + mScanWorkSource.toString() 1949 + " onTime=" + mOnTimeThisScan); 1950 else 1951 logd(ts + " noteScanEnd no scan source" 1952 + " onTime=" + mOnTimeThisScan); 1953 } 1954 if (mScanWorkSource != null) { 1955 try { 1956 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1957 } catch (RemoteException e) { 1958 log(e.toString()); 1959 } finally { 1960 mScanWorkSource = null; 1961 } 1962 } 1963 } 1964 1965 private void handleScanRequest(int type, Message message) { 1966 ScanSettings settings = null; 1967 WorkSource workSource = null; 1968 1969 // unbundle parameters 1970 Bundle bundle = (Bundle) message.obj; 1971 1972 if (bundle != null) { 1973 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1974 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1975 } 1976 1977 // parse scan settings 1978 String freqs = null; 1979 if (settings != null && settings.channelSet != null) { 1980 StringBuilder sb = new StringBuilder(); 1981 boolean first = true; 1982 for (WifiChannel channel : settings.channelSet) { 1983 if (!first) sb.append(','); 1984 else first = false; 1985 sb.append(channel.freqMHz); 1986 } 1987 freqs = sb.toString(); 1988 } 1989 1990 // call wifi native to start the scan 1991 if (startScanNative(type, freqs)) { 1992 // only count battery consumption if scan request is accepted 1993 noteScanStart(message.arg1, workSource); 1994 // a full scan covers everything, clearing scan request buffer 1995 if (freqs == null) 1996 mBufferedScanMsg.clear(); 1997 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1998 if (workSource != null) { 1999 // External worksource was passed along the scan request, 2000 // hence always send a broadcast 2001 mSendScanResultsBroadcast = true; 2002 } 2003 return; 2004 } 2005 2006 // if reach here, scan request is rejected 2007 2008 if (!mIsScanOngoing) { 2009 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2010 2011 // discard this request and pop up the next one 2012 if (mBufferedScanMsg.size() > 0) { 2013 sendMessage(mBufferedScanMsg.remove()); 2014 } 2015 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2016 } else if (!mIsFullScanOngoing) { 2017 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2018 // buffer the scan request to make sure specified channels will be scanned eventually 2019 if (freqs == null) 2020 mBufferedScanMsg.clear(); 2021 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2022 Message msg = obtainMessage(CMD_START_SCAN, 2023 message.arg1, message.arg2, bundle); 2024 mBufferedScanMsg.add(msg); 2025 } else { 2026 // if too many requests in buffer, combine them into a single full scan 2027 bundle = new Bundle(); 2028 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2029 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2030 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2031 mBufferedScanMsg.clear(); 2032 mBufferedScanMsg.add(msg); 2033 } 2034 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2035 } else { 2036 // mIsScanOngoing and mIsFullScanOngoing 2037 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2038 } 2039 } 2040 2041 2042 /** 2043 * return true iff scan request is accepted 2044 */ 2045 private boolean startScanNative(int type, String freqs) { 2046 if (mWifiNative.scan(type, freqs)) { 2047 mIsScanOngoing = true; 2048 mIsFullScanOngoing = (freqs == null); 2049 lastScanFreqs = freqs; 2050 return true; 2051 } 2052 return false; 2053 } 2054 2055 /** 2056 * TODO: doc 2057 */ 2058 public void setSupplicantRunning(boolean enable) { 2059 if (enable) { 2060 sendMessage(CMD_START_SUPPLICANT); 2061 } else { 2062 sendMessage(CMD_STOP_SUPPLICANT); 2063 } 2064 } 2065 2066 /** 2067 * TODO: doc 2068 */ 2069 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2070 if (enable) { 2071 sendMessage(CMD_START_AP, wifiConfig); 2072 } else { 2073 sendMessage(CMD_STOP_AP); 2074 } 2075 } 2076 2077 public void setWifiApConfiguration(WifiConfiguration config) { 2078 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2079 } 2080 2081 public WifiConfiguration syncGetWifiApConfiguration() { 2082 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2083 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2084 resultMsg.recycle(); 2085 return ret; 2086 } 2087 2088 /** 2089 * TODO: doc 2090 */ 2091 public int syncGetWifiState() { 2092 return mWifiState.get(); 2093 } 2094 2095 /** 2096 * TODO: doc 2097 */ 2098 public String syncGetWifiStateByName() { 2099 switch (mWifiState.get()) { 2100 case WIFI_STATE_DISABLING: 2101 return "disabling"; 2102 case WIFI_STATE_DISABLED: 2103 return "disabled"; 2104 case WIFI_STATE_ENABLING: 2105 return "enabling"; 2106 case WIFI_STATE_ENABLED: 2107 return "enabled"; 2108 case WIFI_STATE_UNKNOWN: 2109 return "unknown state"; 2110 default: 2111 return "[invalid state]"; 2112 } 2113 } 2114 2115 /** 2116 * TODO: doc 2117 */ 2118 public int syncGetWifiApState() { 2119 return mWifiApState.get(); 2120 } 2121 2122 /** 2123 * TODO: doc 2124 */ 2125 public String syncGetWifiApStateByName() { 2126 switch (mWifiApState.get()) { 2127 case WIFI_AP_STATE_DISABLING: 2128 return "disabling"; 2129 case WIFI_AP_STATE_DISABLED: 2130 return "disabled"; 2131 case WIFI_AP_STATE_ENABLING: 2132 return "enabling"; 2133 case WIFI_AP_STATE_ENABLED: 2134 return "enabled"; 2135 case WIFI_AP_STATE_FAILED: 2136 return "failed"; 2137 default: 2138 return "[invalid state]"; 2139 } 2140 } 2141 2142 /** 2143 * Get status information for the current connection, if any. 2144 * 2145 * @return a {@link WifiInfo} object containing information about the current connection 2146 */ 2147 public WifiInfo syncRequestConnectionInfo() { 2148 return getWiFiInfoForUid(Binder.getCallingUid()); 2149 } 2150 2151 public DhcpResults syncGetDhcpResults() { 2152 synchronized (mDhcpResultsLock) { 2153 return new DhcpResults(mDhcpResults); 2154 } 2155 } 2156 2157 /** 2158 * TODO: doc 2159 */ 2160 public void setDriverStart(boolean enable) { 2161 if (enable) { 2162 sendMessage(CMD_START_DRIVER); 2163 } else { 2164 sendMessage(CMD_STOP_DRIVER); 2165 } 2166 } 2167 2168 /** 2169 * TODO: doc 2170 */ 2171 public void setOperationalMode(int mode) { 2172 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2173 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2174 } 2175 2176 /** 2177 * TODO: doc 2178 */ 2179 public List<ScanResult> syncGetScanResultsList() { 2180 synchronized (mScanResultCache) { 2181 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2182 for (ScanDetail result : mScanResults) { 2183 scanList.add(new ScanResult(result.getScanResult())); 2184 } 2185 return scanList; 2186 } 2187 } 2188 2189 public void disableEphemeralNetwork(String SSID) { 2190 if (SSID != null) { 2191 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2192 } 2193 } 2194 2195 /** 2196 * Get unsynchronized pointer to scan result list 2197 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2198 */ 2199 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2200 return mScanResults; 2201 } 2202 2203 /** 2204 * Disconnect from Access Point 2205 */ 2206 public void disconnectCommand() { 2207 sendMessage(CMD_DISCONNECT); 2208 } 2209 2210 public void disconnectCommand(int uid, int reason) { 2211 sendMessage(CMD_DISCONNECT, uid, reason); 2212 } 2213 2214 /** 2215 * Initiate a reconnection to AP 2216 */ 2217 public void reconnectCommand() { 2218 sendMessage(CMD_RECONNECT); 2219 } 2220 2221 /** 2222 * Initiate a re-association to AP 2223 */ 2224 public void reassociateCommand() { 2225 sendMessage(CMD_REASSOCIATE); 2226 } 2227 2228 /** 2229 * Reload networks and then reconnect; helps load correct data for TLS networks 2230 */ 2231 2232 public void reloadTlsNetworksAndReconnect() { 2233 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2234 } 2235 2236 /** 2237 * Add a network synchronously 2238 * 2239 * @return network id of the new network 2240 */ 2241 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2242 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2243 int result = resultMsg.arg1; 2244 resultMsg.recycle(); 2245 return result; 2246 } 2247 2248 /** 2249 * Get configured networks synchronously 2250 * 2251 * @param channel 2252 * @return 2253 */ 2254 2255 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2256 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2257 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2258 resultMsg.recycle(); 2259 return result; 2260 } 2261 2262 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2263 Message resultMsg = channel.sendMessageSynchronously( 2264 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2265 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2266 resultMsg.recycle(); 2267 return result; 2268 } 2269 2270 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2271 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2272 return (WifiConfiguration) resultMsg.obj; 2273 } 2274 2275 /** 2276 * Get connection statistics synchronously 2277 * 2278 * @param channel 2279 * @return 2280 */ 2281 2282 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2283 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2284 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2285 resultMsg.recycle(); 2286 return result; 2287 } 2288 2289 /** 2290 * Get adaptors synchronously 2291 */ 2292 2293 public int syncGetSupportedFeatures(AsyncChannel channel) { 2294 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2295 int supportedFeatureSet = resultMsg.arg1; 2296 resultMsg.recycle(); 2297 return supportedFeatureSet; 2298 } 2299 2300 /** 2301 * Get link layers stats for adapter synchronously 2302 */ 2303 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2304 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2305 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2306 resultMsg.recycle(); 2307 return result; 2308 } 2309 2310 /** 2311 * Delete a network 2312 * 2313 * @param networkId id of the network to be removed 2314 */ 2315 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2316 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2317 boolean result = (resultMsg.arg1 != FAILURE); 2318 resultMsg.recycle(); 2319 return result; 2320 } 2321 2322 /** 2323 * Enable a network 2324 * 2325 * @param netId network id of the network 2326 * @param disableOthers true, if all other networks have to be disabled 2327 * @return {@code true} if the operation succeeds, {@code false} otherwise 2328 */ 2329 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2330 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2331 disableOthers ? 1 : 0); 2332 boolean result = (resultMsg.arg1 != FAILURE); 2333 resultMsg.recycle(); 2334 return result; 2335 } 2336 2337 /** 2338 * Disable a network 2339 * 2340 * @param netId network id of the network 2341 * @return {@code true} if the operation succeeds, {@code false} otherwise 2342 */ 2343 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2344 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2345 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2346 resultMsg.recycle(); 2347 return result; 2348 } 2349 2350 /** 2351 * Retrieves a WPS-NFC configuration token for the specified network 2352 * 2353 * @return a hex string representation of the WPS-NFC configuration token 2354 */ 2355 public String syncGetWpsNfcConfigurationToken(int netId) { 2356 return mWifiNative.getNfcWpsConfigurationToken(netId); 2357 } 2358 2359 void enableBackgroundScan(boolean enable) { 2360 if (enable) { 2361 mWifiConfigStore.enableAllNetworks(); 2362 } 2363 List<WifiNative.PnoNetworkPriority> pnoList = 2364 mWifiConfigStore.retrievePnoNetworkPriorityList(enable); 2365 boolean ret = mWifiNative.enableBackgroundScan(enable, pnoList); 2366 if (ret) { 2367 mLegacyPnoEnabled = enable; 2368 } else { 2369 Log.e(TAG, " Fail to set up pno, want " + enable + " now " + mLegacyPnoEnabled); 2370 } 2371 } 2372 2373 /** 2374 * Blacklist a BSSID. This will avoid the AP if there are 2375 * alternate APs to connect 2376 * 2377 * @param bssid BSSID of the network 2378 */ 2379 public void addToBlacklist(String bssid) { 2380 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2381 } 2382 2383 /** 2384 * Clear the blacklist list 2385 */ 2386 public void clearBlacklist() { 2387 sendMessage(CMD_CLEAR_BLACKLIST); 2388 } 2389 2390 public void enableRssiPolling(boolean enabled) { 2391 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2392 } 2393 2394 public void enableAllNetworks() { 2395 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2396 } 2397 2398 /** 2399 * Start filtering Multicast v4 packets 2400 */ 2401 public void startFilteringMulticastV4Packets() { 2402 mFilteringMulticastV4Packets.set(true); 2403 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2404 } 2405 2406 /** 2407 * Stop filtering Multicast v4 packets 2408 */ 2409 public void stopFilteringMulticastV4Packets() { 2410 mFilteringMulticastV4Packets.set(false); 2411 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2412 } 2413 2414 /** 2415 * Start filtering Multicast v4 packets 2416 */ 2417 public void startFilteringMulticastV6Packets() { 2418 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2419 } 2420 2421 /** 2422 * Stop filtering Multicast v4 packets 2423 */ 2424 public void stopFilteringMulticastV6Packets() { 2425 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2426 } 2427 2428 /** 2429 * Set high performance mode of operation. 2430 * Enabling would set active power mode and disable suspend optimizations; 2431 * disabling would set auto power mode and enable suspend optimizations 2432 * 2433 * @param enable true if enable, false otherwise 2434 */ 2435 public void setHighPerfModeEnabled(boolean enable) { 2436 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2437 } 2438 2439 /** 2440 * Set the country code 2441 * 2442 * @param countryCode following ISO 3166 format 2443 * @param persist {@code true} if the setting should be remembered. 2444 */ 2445 public synchronized void setCountryCode(String countryCode, boolean persist) { 2446 // If it's a good country code, apply after the current 2447 // wifi connection is terminated; ignore resetting of code 2448 // for now (it is unclear what the chipset should do when 2449 // country code is reset) 2450 2451 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2452 // else only when the new country code is different from the current one to set 2453 2454 if (TextUtils.isEmpty(countryCode)) { 2455 if (DBG) log("Ignoring resetting of country code"); 2456 } else { 2457 int countryCodeSequence = mCountryCodeSequence.get(); 2458 String currentCountryCode = getCurrentCountryCode(); 2459 if (countryCodeSequence == 0 2460 || TextUtils.equals(countryCode, currentCountryCode) == false) { 2461 2462 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2463 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2464 countryCode); 2465 } 2466 } 2467 } 2468 2469 /** 2470 * reset the country code to default 2471 */ 2472 public synchronized void resetCountryCode() { 2473 if (mRevertCountryCodeOnCellularLoss && TextUtils.isEmpty(mDefaultCountryCode) == false) { 2474 logd("resetting country code to " + mDefaultCountryCode); 2475 setCountryCode(mDefaultCountryCode, /* persist = */ true); 2476 } 2477 } 2478 2479 /** 2480 * reset cached SIM credential data 2481 */ 2482 public synchronized void resetSimAuthNetworks() { 2483 sendMessage(CMD_RESET_SIM_NETWORKS); 2484 } 2485 2486 2487 /** 2488 * Get Network object of current wifi network 2489 * @return Network object of current wifi network 2490 */ 2491 public Network getCurrentNetwork() { 2492 if (mNetworkAgent != null) { 2493 return new Network(mNetworkAgent.netId); 2494 } else { 2495 return null; 2496 } 2497 } 2498 2499 /** 2500 * Get the country code 2501 * 2502 * @return countryCode following ISO 3166 format 2503 */ 2504 public String getCurrentCountryCode() { 2505 return Settings.Global.getString( 2506 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 2507 } 2508 2509 /** 2510 * Set the operational frequency band 2511 * 2512 * @param band 2513 * @param persist {@code true} if the setting should be remembered. 2514 */ 2515 public void setFrequencyBand(int band, boolean persist) { 2516 if (persist) { 2517 Settings.Global.putInt(mContext.getContentResolver(), 2518 Settings.Global.WIFI_FREQUENCY_BAND, 2519 band); 2520 } 2521 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2522 } 2523 2524 /** 2525 * Enable TDLS for a specific MAC address 2526 */ 2527 public void enableTdls(String remoteMacAddress, boolean enable) { 2528 int enabler = enable ? 1 : 0; 2529 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2530 } 2531 2532 /** 2533 * Returns the operational frequency band 2534 */ 2535 public int getFrequencyBand() { 2536 return mFrequencyBand.get(); 2537 } 2538 2539 /** 2540 * Returns the wifi configuration file 2541 */ 2542 public String getConfigFile() { 2543 return mWifiConfigStore.getConfigFile(); 2544 } 2545 2546 /** 2547 * Send a message indicating bluetooth adapter connection state changed 2548 */ 2549 public void sendBluetoothAdapterStateChange(int state) { 2550 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2551 } 2552 2553 /** 2554 * Send a message indicating a package has been uninstalled. 2555 */ 2556 public void removeAppConfigs(String packageName, int uid) { 2557 // Build partial AppInfo manually - package may not exist in database any more 2558 ApplicationInfo ai = new ApplicationInfo(); 2559 ai.packageName = packageName; 2560 ai.uid = uid; 2561 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2562 } 2563 2564 /** 2565 * Send a message indicating a user has been removed. 2566 */ 2567 public void removeUserConfigs(int userId) { 2568 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2569 } 2570 2571 /** 2572 * Save configuration on supplicant 2573 * 2574 * @return {@code true} if the operation succeeds, {@code false} otherwise 2575 * <p/> 2576 * TODO: deprecate this 2577 */ 2578 public boolean syncSaveConfig(AsyncChannel channel) { 2579 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2580 boolean result = (resultMsg.arg1 != FAILURE); 2581 resultMsg.recycle(); 2582 return result; 2583 } 2584 2585 public void updateBatteryWorkSource(WorkSource newSource) { 2586 synchronized (mRunningWifiUids) { 2587 try { 2588 if (newSource != null) { 2589 mRunningWifiUids.set(newSource); 2590 } 2591 if (mIsRunning) { 2592 if (mReportedRunning) { 2593 // If the work source has changed since last time, need 2594 // to remove old work from battery stats. 2595 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2596 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2597 mRunningWifiUids); 2598 mLastRunningWifiUids.set(mRunningWifiUids); 2599 } 2600 } else { 2601 // Now being started, report it. 2602 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2603 mLastRunningWifiUids.set(mRunningWifiUids); 2604 mReportedRunning = true; 2605 } 2606 } else { 2607 if (mReportedRunning) { 2608 // Last reported we were running, time to stop. 2609 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2610 mLastRunningWifiUids.clear(); 2611 mReportedRunning = false; 2612 } 2613 } 2614 mWakeLock.setWorkSource(newSource); 2615 } catch (RemoteException ignore) { 2616 } 2617 } 2618 } 2619 2620 @Override 2621 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2622 super.dump(fd, pw, args); 2623 mSupplicantStateTracker.dump(fd, pw, args); 2624 pw.println("mLinkProperties " + mLinkProperties); 2625 pw.println("mWifiInfo " + mWifiInfo); 2626 pw.println("mDhcpResults " + mDhcpResults); 2627 pw.println("mNetworkInfo " + mNetworkInfo); 2628 pw.println("mLastSignalLevel " + mLastSignalLevel); 2629 pw.println("mLastBssid " + mLastBssid); 2630 pw.println("mLastNetworkId " + mLastNetworkId); 2631 pw.println("mOperationalMode " + mOperationalMode); 2632 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2633 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2634 pw.println("Supplicant status " + mWifiNative.status(true)); 2635 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2636 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2637 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2638 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2639 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2640 pw.println("SSID whitelist :" ); 2641 for (int i=0; i < mWhiteListedSsids.length; i++) { 2642 pw.println(" " + mWhiteListedSsids[i]); 2643 } 2644 } 2645 mNetworkFactory.dump(fd, pw, args); 2646 mUntrustedNetworkFactory.dump(fd, pw, args); 2647 pw.println(); 2648 mWifiConfigStore.dump(fd, pw, args); 2649 pw.println(); 2650 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_USER_ACTION); 2651 mWifiLogger.dump(fd, pw, args); 2652 } 2653 2654 /** 2655 * ****************************************************** 2656 * Internal private functions 2657 * ****************************************************** 2658 */ 2659 2660 private void logStateAndMessage(Message message, State state) { 2661 messageHandlingStatus = 0; 2662 if (mLogMessages) { 2663 logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); 2664 } 2665 } 2666 2667 /** 2668 * helper, prints the milli time since boot wi and w/o suspended time 2669 */ 2670 String printTime() { 2671 StringBuilder sb = new StringBuilder(); 2672 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2673 sb.append("/").append(SystemClock.elapsedRealtime()); 2674 return sb.toString(); 2675 } 2676 2677 /** 2678 * Return the additional string to be logged by LogRec, default 2679 * 2680 * @param msg that was processed 2681 * @return information to be logged as a String 2682 */ 2683 protected String getLogRecString(Message msg) { 2684 WifiConfiguration config; 2685 Long now; 2686 String report; 2687 String key; 2688 StringBuilder sb = new StringBuilder(); 2689 if (mScreenOn) { 2690 sb.append("!"); 2691 } 2692 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2693 sb.append("(").append(messageHandlingStatus).append(")"); 2694 } 2695 sb.append(smToString(msg)); 2696 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2697 sb.append(" uid=" + msg.sendingUid); 2698 } 2699 sb.append(" ").append(printTime()); 2700 switch (msg.what) { 2701 case CMD_STARTED_GSCAN_DBG: 2702 case CMD_STARTED_PNO_DBG: 2703 sb.append(" "); 2704 sb.append(Integer.toString(msg.arg1)); 2705 sb.append(" "); 2706 sb.append(Integer.toString(msg.arg2)); 2707 if (msg.obj != null) { 2708 sb.append(" " + (String)msg.obj); 2709 } 2710 break; 2711 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2712 sb.append(" "); 2713 sb.append(Integer.toString(msg.arg1)); 2714 sb.append(" "); 2715 sb.append(Integer.toString(msg.arg2)); 2716 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2717 if (msg.obj != null) { 2718 sb.append(" " + (String)msg.obj); 2719 } 2720 break; 2721 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2722 sb.append(" "); 2723 sb.append(Integer.toString(msg.arg1)); 2724 sb.append(" "); 2725 sb.append(Integer.toString(msg.arg2)); 2726 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2727 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2728 sb.append(" autojoinAllowed="); 2729 sb.append(mWifiConfigStore.enableAutoJoinWhenAssociated.get()); 2730 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2731 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2732 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2733 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2734 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2735 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2736 break; 2737 case CMD_PNO_NETWORK_FOUND: 2738 sb.append(" "); 2739 sb.append(Integer.toString(msg.arg1)); 2740 sb.append(" "); 2741 sb.append(Integer.toString(msg.arg2)); 2742 if (msg.obj != null) { 2743 ScanResult[] results = (ScanResult[])msg.obj; 2744 for (int i = 0; i < results.length; i++) { 2745 sb.append(" ").append(results[i].SSID).append(" "); 2746 sb.append(results[i].frequency); 2747 sb.append(" ").append(results[i].level); 2748 } 2749 } 2750 break; 2751 case CMD_START_SCAN: 2752 now = System.currentTimeMillis(); 2753 sb.append(" "); 2754 sb.append(Integer.toString(msg.arg1)); 2755 sb.append(" "); 2756 sb.append(Integer.toString(msg.arg2)); 2757 sb.append(" ic="); 2758 sb.append(Integer.toString(sScanAlarmIntentCount)); 2759 if (msg.obj != null) { 2760 Bundle bundle = (Bundle) msg.obj; 2761 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2762 if (request != 0) { 2763 sb.append(" proc(ms):").append(now - request); 2764 } 2765 } 2766 if (mIsScanOngoing) sb.append(" onGoing"); 2767 if (mIsFullScanOngoing) sb.append(" full"); 2768 if (lastStartScanTimeStamp != 0) { 2769 sb.append(" started:").append(lastStartScanTimeStamp); 2770 sb.append(",").append(now - lastStartScanTimeStamp); 2771 } 2772 if (lastScanDuration != 0) { 2773 sb.append(" dur:").append(lastScanDuration); 2774 } 2775 sb.append(" cnt=").append(mDelayedScanCounter); 2776 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2777 sb.append(" f=").append(mWifiInfo.getFrequency()); 2778 sb.append(" sc=").append(mWifiInfo.score); 2779 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2780 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2781 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2782 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2783 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2784 if (lastScanFreqs != null) { 2785 sb.append(" list=").append(lastScanFreqs); 2786 } else { 2787 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2788 } 2789 report = reportOnTime(); 2790 if (report != null) { 2791 sb.append(" ").append(report); 2792 } 2793 break; 2794 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2795 sb.append(" "); 2796 sb.append(Integer.toString(msg.arg1)); 2797 sb.append(" "); 2798 sb.append(Integer.toString(msg.arg2)); 2799 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2800 if (stateChangeResult != null) { 2801 sb.append(stateChangeResult.toString()); 2802 } 2803 break; 2804 case WifiManager.SAVE_NETWORK: 2805 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2806 sb.append(" "); 2807 sb.append(Integer.toString(msg.arg1)); 2808 sb.append(" "); 2809 sb.append(Integer.toString(msg.arg2)); 2810 if (lastSavedConfigurationAttempt != null) { 2811 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2812 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2813 if (lastSavedConfigurationAttempt.hiddenSSID) { 2814 sb.append(" hidden"); 2815 } 2816 if (lastSavedConfigurationAttempt.preSharedKey != null 2817 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2818 sb.append(" hasPSK"); 2819 } 2820 if (lastSavedConfigurationAttempt.ephemeral) { 2821 sb.append(" ephemeral"); 2822 } 2823 if (lastSavedConfigurationAttempt.selfAdded) { 2824 sb.append(" selfAdded"); 2825 } 2826 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2827 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2828 } 2829 break; 2830 case WifiManager.FORGET_NETWORK: 2831 sb.append(" "); 2832 sb.append(Integer.toString(msg.arg1)); 2833 sb.append(" "); 2834 sb.append(Integer.toString(msg.arg2)); 2835 if (lastForgetConfigurationAttempt != null) { 2836 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2837 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2838 if (lastForgetConfigurationAttempt.hiddenSSID) { 2839 sb.append(" hidden"); 2840 } 2841 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2842 sb.append(" hasPSK"); 2843 } 2844 if (lastForgetConfigurationAttempt.ephemeral) { 2845 sb.append(" ephemeral"); 2846 } 2847 if (lastForgetConfigurationAttempt.selfAdded) { 2848 sb.append(" selfAdded"); 2849 } 2850 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2851 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2852 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2853 } 2854 break; 2855 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2856 sb.append(" "); 2857 sb.append(Integer.toString(msg.arg1)); 2858 sb.append(" "); 2859 sb.append(Integer.toString(msg.arg2)); 2860 String bssid = (String) msg.obj; 2861 if (bssid != null && bssid.length() > 0) { 2862 sb.append(" "); 2863 sb.append(bssid); 2864 } 2865 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2866 break; 2867 case WifiMonitor.SCAN_RESULTS_EVENT: 2868 sb.append(" "); 2869 sb.append(Integer.toString(msg.arg1)); 2870 sb.append(" "); 2871 sb.append(Integer.toString(msg.arg2)); 2872 if (mScanResults != null) { 2873 sb.append(" found="); 2874 sb.append(mScanResults.size()); 2875 } 2876 sb.append(" known=").append(mNumScanResultsKnown); 2877 sb.append(" got=").append(mNumScanResultsReturned); 2878 if (lastScanDuration != 0) { 2879 sb.append(" dur:").append(lastScanDuration); 2880 } 2881 if (mOnTime != 0) { 2882 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2883 sb.append(",").append(mOnTime); 2884 } 2885 if (mTxTime != 0) { 2886 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2887 sb.append(",").append(mTxTime); 2888 } 2889 if (mRxTime != 0) { 2890 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2891 sb.append(",").append(mRxTime); 2892 } 2893 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2894 sb.append(String.format(" con=%d", mConnectionRequests)); 2895 key = mWifiConfigStore.getLastSelectedConfiguration(); 2896 if (key != null) { 2897 sb.append(" last=").append(key); 2898 } 2899 break; 2900 case WifiMonitor.SCAN_FAILED_EVENT: 2901 break; 2902 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2903 sb.append(" "); 2904 sb.append(Integer.toString(msg.arg1)); 2905 sb.append(" "); 2906 sb.append(Integer.toString(msg.arg2)); 2907 sb.append(" ").append(mLastBssid); 2908 sb.append(" nid=").append(mLastNetworkId); 2909 config = getCurrentWifiConfiguration(); 2910 if (config != null) { 2911 sb.append(" ").append(config.configKey()); 2912 } 2913 key = mWifiConfigStore.getLastSelectedConfiguration(); 2914 if (key != null) { 2915 sb.append(" last=").append(key); 2916 } 2917 break; 2918 case CMD_TARGET_BSSID: 2919 case CMD_ASSOCIATED_BSSID: 2920 sb.append(" "); 2921 sb.append(Integer.toString(msg.arg1)); 2922 sb.append(" "); 2923 sb.append(Integer.toString(msg.arg2)); 2924 if (msg.obj != null) { 2925 sb.append(" BSSID=").append((String) msg.obj); 2926 } 2927 if (mTargetRoamBSSID != null) { 2928 sb.append(" Target=").append(mTargetRoamBSSID); 2929 } 2930 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2931 break; 2932 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2933 if (msg.obj != null) { 2934 sb.append(" ").append((String) msg.obj); 2935 } 2936 sb.append(" nid=").append(msg.arg1); 2937 sb.append(" reason=").append(msg.arg2); 2938 if (mLastBssid != null) { 2939 sb.append(" lastbssid=").append(mLastBssid); 2940 } 2941 if (mWifiInfo.getFrequency() != -1) { 2942 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2943 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2944 } 2945 if (linkDebouncing) { 2946 sb.append(" debounce"); 2947 } 2948 break; 2949 case WifiMonitor.SSID_TEMP_DISABLED: 2950 case WifiMonitor.SSID_REENABLED: 2951 sb.append(" nid=").append(msg.arg1); 2952 if (msg.obj != null) { 2953 sb.append(" ").append((String) msg.obj); 2954 } 2955 config = getCurrentWifiConfiguration(); 2956 if (config != null) { 2957 sb.append(" cur=").append(config.configKey()); 2958 sb.append(" ajst=").append(config.autoJoinStatus); 2959 if (config.selfAdded) { 2960 sb.append(" selfAdded"); 2961 } 2962 if (config.status != 0) { 2963 sb.append(" st=").append(config.status); 2964 sb.append(" rs=").append(config.disableReason); 2965 } 2966 if (config.lastConnected != 0) { 2967 now = System.currentTimeMillis(); 2968 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2969 } 2970 if (mLastBssid != null) { 2971 sb.append(" lastbssid=").append(mLastBssid); 2972 } 2973 if (mWifiInfo.getFrequency() != -1) { 2974 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2975 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2976 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2977 } 2978 } 2979 break; 2980 case CMD_RSSI_POLL: 2981 case CMD_UNWANTED_NETWORK: 2982 case WifiManager.RSSI_PKTCNT_FETCH: 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg1)); 2985 sb.append(" "); 2986 sb.append(Integer.toString(msg.arg2)); 2987 if (mWifiInfo.getSSID() != null) 2988 if (mWifiInfo.getSSID() != null) 2989 sb.append(" ").append(mWifiInfo.getSSID()); 2990 if (mWifiInfo.getBSSID() != null) 2991 sb.append(" ").append(mWifiInfo.getBSSID()); 2992 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2993 sb.append(" f=").append(mWifiInfo.getFrequency()); 2994 sb.append(" sc=").append(mWifiInfo.score); 2995 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2996 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2997 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2998 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2999 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 3000 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3001 report = reportOnTime(); 3002 if (report != null) { 3003 sb.append(" ").append(report); 3004 } 3005 if (wifiScoringReport != null) { 3006 sb.append(wifiScoringReport); 3007 } 3008 if (mConnectedModeGScanOffloadStarted) { 3009 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 3010 } else { 3011 sb.append(" offload-stopped"); 3012 } 3013 break; 3014 case CMD_AUTO_CONNECT: 3015 case WifiManager.CONNECT_NETWORK: 3016 sb.append(" "); 3017 sb.append(Integer.toString(msg.arg1)); 3018 sb.append(" "); 3019 sb.append(Integer.toString(msg.arg2)); 3020 config = (WifiConfiguration) msg.obj; 3021 if (config != null) { 3022 sb.append(" ").append(config.configKey()); 3023 if (config.visibility != null) { 3024 sb.append(" ").append(config.visibility.toString()); 3025 } 3026 } 3027 if (mTargetRoamBSSID != null) { 3028 sb.append(" ").append(mTargetRoamBSSID); 3029 } 3030 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3031 config = getCurrentWifiConfiguration(); 3032 if (config != null) { 3033 sb.append(config.configKey()); 3034 if (config.visibility != null) { 3035 sb.append(" ").append(config.visibility.toString()); 3036 } 3037 } 3038 break; 3039 case CMD_AUTO_ROAM: 3040 sb.append(" "); 3041 sb.append(Integer.toString(msg.arg1)); 3042 sb.append(" "); 3043 sb.append(Integer.toString(msg.arg2)); 3044 ScanResult result = (ScanResult) msg.obj; 3045 if (result != null) { 3046 now = System.currentTimeMillis(); 3047 sb.append(" bssid=").append(result.BSSID); 3048 sb.append(" rssi=").append(result.level); 3049 sb.append(" freq=").append(result.frequency); 3050 if (result.seen > 0 && result.seen < now) { 3051 sb.append(" seen=").append(now - result.seen); 3052 } else { 3053 // Somehow the timestamp for this scan result is inconsistent 3054 sb.append(" !seen=").append(result.seen); 3055 } 3056 } 3057 if (mTargetRoamBSSID != null) { 3058 sb.append(" ").append(mTargetRoamBSSID); 3059 } 3060 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 3061 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 3062 break; 3063 case CMD_ADD_OR_UPDATE_NETWORK: 3064 sb.append(" "); 3065 sb.append(Integer.toString(msg.arg1)); 3066 sb.append(" "); 3067 sb.append(Integer.toString(msg.arg2)); 3068 if (msg.obj != null) { 3069 config = (WifiConfiguration) msg.obj; 3070 sb.append(" ").append(config.configKey()); 3071 sb.append(" prio=").append(config.priority); 3072 sb.append(" status=").append(config.status); 3073 if (config.BSSID != null) { 3074 sb.append(" ").append(config.BSSID); 3075 } 3076 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3077 if (curConfig != null) { 3078 if (curConfig.configKey().equals(config.configKey())) { 3079 sb.append(" is current"); 3080 } else { 3081 sb.append(" current=").append(curConfig.configKey()); 3082 sb.append(" prio=").append(curConfig.priority); 3083 sb.append(" status=").append(curConfig.status); 3084 } 3085 } 3086 } 3087 break; 3088 case WifiManager.DISABLE_NETWORK: 3089 case CMD_ENABLE_NETWORK: 3090 sb.append(" "); 3091 sb.append(Integer.toString(msg.arg1)); 3092 sb.append(" "); 3093 sb.append(Integer.toString(msg.arg2)); 3094 key = mWifiConfigStore.getLastSelectedConfiguration(); 3095 if (key != null) { 3096 sb.append(" last=").append(key); 3097 } 3098 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3099 if (config != null && (key == null || !config.configKey().equals(key))) { 3100 sb.append(" target=").append(key); 3101 } 3102 break; 3103 case CMD_GET_CONFIGURED_NETWORKS: 3104 sb.append(" "); 3105 sb.append(Integer.toString(msg.arg1)); 3106 sb.append(" "); 3107 sb.append(Integer.toString(msg.arg2)); 3108 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3109 break; 3110 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3111 sb.append(" "); 3112 sb.append(Integer.toString(msg.arg1)); 3113 sb.append(" "); 3114 sb.append(Integer.toString(msg.arg2)); 3115 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3116 sb.append(",").append(mWifiInfo.txBad); 3117 sb.append(",").append(mWifiInfo.txRetries); 3118 break; 3119 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3120 sb.append(" "); 3121 sb.append(Integer.toString(msg.arg1)); 3122 sb.append(" "); 3123 sb.append(Integer.toString(msg.arg2)); 3124 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3125 sb.append(" OK "); 3126 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3127 sb.append(" FAIL "); 3128 } 3129 if (mLinkProperties != null) { 3130 if (mLinkProperties.hasIPv4Address()) { 3131 sb.append(" v4"); 3132 } 3133 if (mLinkProperties.hasGlobalIPv6Address()) { 3134 sb.append(" v6"); 3135 } 3136 if (mLinkProperties.hasIPv4DefaultRoute()) { 3137 sb.append(" v4r"); 3138 } 3139 if (mLinkProperties.hasIPv6DefaultRoute()) { 3140 sb.append(" v6r"); 3141 } 3142 if (mLinkProperties.hasIPv4DnsServer()) { 3143 sb.append(" v4dns"); 3144 } 3145 if (mLinkProperties.hasIPv6DnsServer()) { 3146 sb.append(" v6dns"); 3147 } 3148 } 3149 break; 3150 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3151 sb.append(" "); 3152 sb.append(Integer.toString(msg.arg1)); 3153 sb.append(" "); 3154 sb.append(Integer.toString(msg.arg2)); 3155 if (msg.obj != null) { 3156 NetworkInfo info = (NetworkInfo) msg.obj; 3157 NetworkInfo.State state = info.getState(); 3158 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3159 if (state != null) { 3160 sb.append(" st=").append(state); 3161 } 3162 if (detailedState != null) { 3163 sb.append("/").append(detailedState); 3164 } 3165 } 3166 break; 3167 case CMD_IP_CONFIGURATION_LOST: 3168 int count = -1; 3169 WifiConfiguration c = getCurrentWifiConfiguration(); 3170 if (c != null) count = c.numIpConfigFailures; 3171 sb.append(" "); 3172 sb.append(Integer.toString(msg.arg1)); 3173 sb.append(" "); 3174 sb.append(Integer.toString(msg.arg2)); 3175 sb.append(" failures: "); 3176 sb.append(Integer.toString(count)); 3177 sb.append("/"); 3178 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3179 if (mWifiInfo.getBSSID() != null) { 3180 sb.append(" ").append(mWifiInfo.getBSSID()); 3181 } 3182 if (c != null) { 3183 ScanDetailCache scanDetailCache = 3184 mWifiConfigStore.getScanDetailCache(c); 3185 if (scanDetailCache != null) { 3186 for (ScanDetail sd : scanDetailCache.values()) { 3187 ScanResult r = sd.getScanResult(); 3188 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3189 sb.append(" ipfail=").append(r.numIpConfigFailures); 3190 sb.append(",st=").append(r.autoJoinStatus); 3191 } 3192 } 3193 } 3194 sb.append(" -> ajst=").append(c.autoJoinStatus); 3195 sb.append(" ").append(c.disableReason); 3196 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3197 sb.append(",").append(mWifiInfo.txBad); 3198 sb.append(",").append(mWifiInfo.txRetries); 3199 } 3200 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3201 break; 3202 case CMD_UPDATE_LINKPROPERTIES: 3203 sb.append(" "); 3204 sb.append(Integer.toString(msg.arg1)); 3205 sb.append(" "); 3206 sb.append(Integer.toString(msg.arg2)); 3207 if (mLinkProperties != null) { 3208 if (mLinkProperties.hasIPv4Address()) { 3209 sb.append(" v4"); 3210 } 3211 if (mLinkProperties.hasGlobalIPv6Address()) { 3212 sb.append(" v6"); 3213 } 3214 if (mLinkProperties.hasIPv4DefaultRoute()) { 3215 sb.append(" v4r"); 3216 } 3217 if (mLinkProperties.hasIPv6DefaultRoute()) { 3218 sb.append(" v6r"); 3219 } 3220 if (mLinkProperties.hasIPv4DnsServer()) { 3221 sb.append(" v4dns"); 3222 } 3223 if (mLinkProperties.hasIPv6DnsServer()) { 3224 sb.append(" v6dns"); 3225 } 3226 } 3227 break; 3228 case CMD_IP_REACHABILITY_LOST: 3229 if (msg.obj != null) { 3230 sb.append(" ").append((String) msg.obj); 3231 } 3232 break; 3233 case CMD_SET_COUNTRY_CODE: 3234 sb.append(" "); 3235 sb.append(Integer.toString(msg.arg1)); 3236 sb.append(" "); 3237 sb.append(Integer.toString(msg.arg2)); 3238 if (msg.obj != null) { 3239 sb.append(" ").append((String) msg.obj); 3240 } 3241 break; 3242 case CMD_ROAM_WATCHDOG_TIMER: 3243 sb.append(" "); 3244 sb.append(Integer.toString(msg.arg1)); 3245 sb.append(" "); 3246 sb.append(Integer.toString(msg.arg2)); 3247 sb.append(" cur=").append(roamWatchdogCount); 3248 break; 3249 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3250 sb.append(" "); 3251 sb.append(Integer.toString(msg.arg1)); 3252 sb.append(" "); 3253 sb.append(Integer.toString(msg.arg2)); 3254 sb.append(" cur=").append(disconnectingWatchdogCount); 3255 break; 3256 case CMD_START_RSSI_MONITORING_OFFLOAD: 3257 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 3258 case CMD_RSSI_THRESHOLD_BREACH: 3259 sb.append(" rssi="); 3260 sb.append(Integer.toString(msg.arg1)); 3261 sb.append(" thresholds="); 3262 sb.append(Arrays.toString(mRssiRanges)); 3263 break; 3264 default: 3265 sb.append(" "); 3266 sb.append(Integer.toString(msg.arg1)); 3267 sb.append(" "); 3268 sb.append(Integer.toString(msg.arg2)); 3269 break; 3270 } 3271 3272 return sb.toString(); 3273 } 3274 3275 private void stopPnoOffload() { 3276 3277 // clear the PNO list 3278 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3279 Log.e(TAG, "Failed to stop pno"); 3280 } 3281 3282 } 3283 3284 3285 private boolean configureSsidWhiteList() { 3286 3287 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3288 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3289 return true; 3290 } 3291 3292 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3293 loge("configureSsidWhiteList couldnt program SSID list, size " 3294 + mWhiteListedSsids.length); 3295 return false; 3296 } 3297 3298 logd("configureSsidWhiteList success"); 3299 return true; 3300 } 3301 3302 // In associated more, lazy roam will be looking for 5GHz roam candidate 3303 private boolean configureLazyRoam() { 3304 boolean status; 3305 if (!useHalBasedAutoJoinOffload()) return false; 3306 3307 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3308 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3309 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3310 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3311 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3312 params.A_band_max_boost = 65; 3313 params.lazy_roam_hysteresis = 25; 3314 params.alert_roam_rssi_trigger = -75; 3315 3316 if (DBG) { 3317 Log.e(TAG, "configureLazyRoam " + params.toString()); 3318 } 3319 3320 if (!WifiNative.setLazyRoam(true, params)) { 3321 3322 Log.e(TAG, "configureLazyRoam couldnt program params"); 3323 3324 return false; 3325 } 3326 if (DBG) { 3327 Log.e(TAG, "configureLazyRoam success"); 3328 } 3329 return true; 3330 } 3331 3332 // In associated more, lazy roam will be looking for 5GHz roam candidate 3333 private boolean stopLazyRoam() { 3334 boolean status; 3335 if (!useHalBasedAutoJoinOffload()) return false; 3336 if (DBG) { 3337 Log.e(TAG, "stopLazyRoam"); 3338 } 3339 return WifiNative.setLazyRoam(false, null); 3340 } 3341 3342 private boolean startGScanConnectedModeOffload(String reason) { 3343 if (DBG) { 3344 if (reason == null) { 3345 reason = ""; 3346 } 3347 logd("startGScanConnectedModeOffload " + reason); 3348 } 3349 stopGScan("startGScanConnectedModeOffload " + reason); 3350 if (!mScreenOn) return false; 3351 3352 if (USE_PAUSE_SCANS) { 3353 mWifiNative.pauseScan(); 3354 } 3355 mPnoEnabled = configurePno(); 3356 if (mPnoEnabled == false) { 3357 if (USE_PAUSE_SCANS) { 3358 mWifiNative.restartScan(); 3359 } 3360 return false; 3361 } 3362 mLazyRoamEnabled = configureLazyRoam(); 3363 if (mLazyRoamEnabled == false) { 3364 if (USE_PAUSE_SCANS) { 3365 mWifiNative.restartScan(); 3366 } 3367 return false; 3368 } 3369 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3370 configureSsidWhiteList(); 3371 } 3372 if (!startConnectedGScan(reason)) { 3373 if (USE_PAUSE_SCANS) { 3374 mWifiNative.restartScan(); 3375 } 3376 return false; 3377 } 3378 if (USE_PAUSE_SCANS) { 3379 mWifiNative.restartScan(); 3380 } 3381 mConnectedModeGScanOffloadStarted = true; 3382 if (DBG) { 3383 logd("startGScanConnectedModeOffload success"); 3384 } 3385 return true; 3386 } 3387 3388 private boolean startGScanDisconnectedModeOffload(String reason) { 3389 if (DBG) { 3390 logd("startGScanDisconnectedModeOffload " + reason); 3391 } 3392 stopGScan("startGScanDisconnectedModeOffload " + reason); 3393 if (USE_PAUSE_SCANS) { 3394 mWifiNative.pauseScan(); 3395 } 3396 mPnoEnabled = configurePno(); 3397 if (mPnoEnabled == false) { 3398 if (USE_PAUSE_SCANS) { 3399 mWifiNative.restartScan(); 3400 } 3401 return false; 3402 } 3403 if (!startDisconnectedGScan(reason)) { 3404 if (USE_PAUSE_SCANS) { 3405 mWifiNative.restartScan(); 3406 } 3407 return false; 3408 } 3409 if (USE_PAUSE_SCANS) { 3410 mWifiNative.restartScan(); 3411 } 3412 return true; 3413 } 3414 3415 private boolean configurePno() { 3416 if (!useHalBasedAutoJoinOffload()) return false; 3417 3418 if (mWifiScanner == null) { 3419 log("configurePno: mWifiScanner is null "); 3420 return true; 3421 } 3422 3423 List<WifiNative.WifiPnoNetwork> llist 3424 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3425 if (llist == null || llist.size() == 0) { 3426 stopPnoOffload(); 3427 log("configurePno: empty PNO list "); 3428 return true; 3429 } 3430 if (DBG) { 3431 log("configurePno: got llist size " + llist.size()); 3432 } 3433 3434 // first program the network we want to look for thru the pno API 3435 WifiNative.WifiPnoNetwork list[] 3436 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3437 3438 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3439 Log.e(TAG, "Failed to set pno, length = " + list.length); 3440 return false; 3441 } 3442 3443 if (true) { 3444 StringBuilder sb = new StringBuilder(); 3445 for (WifiNative.WifiPnoNetwork network : list) { 3446 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3447 sb.append(" flags="); 3448 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3449 sb.append("] "); 3450 3451 } 3452 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3453 } 3454 return true; 3455 } 3456 3457 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3458 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3459 3460 private boolean startConnectedGScan(String reason) { 3461 // send a scan background request so as to kick firmware 3462 // 5GHz roaming and autojoin 3463 // We do this only if screen is on 3464 WifiScanner.ScanSettings settings; 3465 3466 if (mPnoEnabled || mLazyRoamEnabled) { 3467 settings = new WifiScanner.ScanSettings(); 3468 settings.band = WifiScanner.WIFI_BAND_BOTH; 3469 long now = System.currentTimeMillis(); 3470 3471 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3472 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3473 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3474 } else { 3475 mGScanStartTimeMilli = now; 3476 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3477 // if we start offload with short interval, then reconfigure it after a given 3478 // duration of time so as to reduce the scan frequency 3479 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3480 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3481 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3482 (long)delay); 3483 mRestartAutoJoinOffloadCounter++; 3484 } 3485 mGScanPeriodMilli = settings.periodInMs; 3486 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3487 if (DBG) { 3488 log("startConnectedScan: settings band="+ settings.band 3489 + " period=" + settings.periodInMs); 3490 } 3491 3492 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3493 if (true) { 3494 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3495 } 3496 } 3497 return true; 3498 } 3499 3500 private boolean startDisconnectedGScan(String reason) { 3501 // send a scan background request so as to kick firmware 3502 // PNO 3503 // This is done in both screen On and screen Off modes 3504 WifiScanner.ScanSettings settings; 3505 3506 if (mWifiScanner == null) { 3507 log("startDisconnectedGScan: no wifi scanner"); 3508 return false; 3509 } 3510 3511 if (mPnoEnabled || mLazyRoamEnabled) { 3512 settings = new WifiScanner.ScanSettings(); 3513 settings.band = WifiScanner.WIFI_BAND_BOTH; 3514 long now = System.currentTimeMillis(); 3515 3516 3517 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3518 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3519 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3520 } else { 3521 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3522 mGScanStartTimeMilli = now; 3523 // if we start offload with short interval, then reconfigure it after a given 3524 // duration of time so as to reduce the scan frequency 3525 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3526 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3527 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3528 (long)delay); 3529 mRestartAutoJoinOffloadCounter++; 3530 } 3531 mGScanPeriodMilli = settings.periodInMs; 3532 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3533 if (DBG) { 3534 log("startDisconnectedScan: settings band="+ settings.band 3535 + " period=" + settings.periodInMs); 3536 } 3537 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3538 if (true) { 3539 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3540 } 3541 } 3542 return true; 3543 } 3544 3545 private boolean stopGScan(String reason) { 3546 mGScanStartTimeMilli = 0; 3547 mGScanPeriodMilli = 0; 3548 if (mWifiScanner != null) { 3549 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3550 } 3551 mConnectedModeGScanOffloadStarted = false; 3552 if (true) { 3553 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3554 } 3555 return true; 3556 } 3557 3558 private void handleScreenStateChanged(boolean screenOn) { 3559 mScreenOn = screenOn; 3560 if (PDBG) { 3561 logd(" handleScreenStateChanged Enter: screenOn=" + screenOn 3562 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3563 + " state " + getCurrentState().getName() 3564 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3565 } 3566 enableRssiPolling(screenOn); 3567 if (mUserWantsSuspendOpt.get()) { 3568 if (screenOn) { 3569 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3570 } else { 3571 // Allow 2s for suspend optimizations to be set 3572 mSuspendWakeLock.acquire(2000); 3573 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3574 } 3575 } 3576 mScreenBroadcastReceived.set(true); 3577 3578 getWifiLinkLayerStats(false); 3579 mOnTimeScreenStateChange = mOnTime; 3580 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3581 3582 cancelDelayedScan(); 3583 3584 if (screenOn) { 3585 enableBackgroundScan(false); 3586 setScanAlarm(false); 3587 clearBlacklist(); 3588 3589 fullBandConnectedTimeIntervalMilli 3590 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3591 // In either Disconnectedstate or ConnectedState, 3592 // start the scan alarm so as to enable autojoin 3593 if (getCurrentState() == mConnectedState 3594 && allowFullBandScanAndAssociated()) { 3595 if (useHalBasedAutoJoinOffload()) { 3596 startGScanConnectedModeOffload("screenOnConnected"); 3597 } else { 3598 // Scan after 500ms 3599 startDelayedScan(500, null, null); 3600 } 3601 } else if (getCurrentState() == mDisconnectedState) { 3602 if (useHalBasedAutoJoinOffload()) { 3603 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3604 } else { 3605 // Scan after 500ms 3606 startDelayedScan(500, null, null); 3607 } 3608 } 3609 } else { 3610 if (getCurrentState() == mDisconnectedState) { 3611 // Screen Off and Disconnected and chipset doesn't support scan offload 3612 // => start scan alarm 3613 // Screen Off and Disconnected and chipset does support scan offload 3614 // => will use scan offload (i.e. background scan) 3615 if (useHalBasedAutoJoinOffload()) { 3616 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3617 } else { 3618 if (!mBackgroundScanSupported) { 3619 setScanAlarm(true); 3620 } else { 3621 if (!mIsScanOngoing) { 3622 enableBackgroundScan(true); 3623 } 3624 } 3625 } 3626 } else { 3627 enableBackgroundScan(false); 3628 if (useHalBasedAutoJoinOffload()) { 3629 // don't try stop Gscan if it is not enabled 3630 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3631 } 3632 } 3633 } 3634 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3635 3636 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3637 } 3638 3639 private void checkAndSetConnectivityInstance() { 3640 if (mCm == null) { 3641 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3642 } 3643 } 3644 3645 private boolean startTethering(ArrayList<String> available) { 3646 3647 boolean wifiAvailable = false; 3648 3649 checkAndSetConnectivityInstance(); 3650 3651 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3652 3653 for (String intf : available) { 3654 for (String regex : wifiRegexs) { 3655 if (intf.matches(regex)) { 3656 3657 InterfaceConfiguration ifcg = null; 3658 try { 3659 ifcg = mNwService.getInterfaceConfig(intf); 3660 if (ifcg != null) { 3661 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3662 ifcg.setLinkAddress(new LinkAddress( 3663 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3664 ifcg.setInterfaceUp(); 3665 3666 mNwService.setInterfaceConfig(intf, ifcg); 3667 } 3668 } catch (Exception e) { 3669 loge("Error configuring interface " + intf + ", :" + e); 3670 return false; 3671 } 3672 3673 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3674 loge("Error tethering on " + intf); 3675 return false; 3676 } 3677 mTetherInterfaceName = intf; 3678 return true; 3679 } 3680 } 3681 } 3682 // We found no interfaces to tether 3683 return false; 3684 } 3685 3686 private void stopTethering() { 3687 3688 checkAndSetConnectivityInstance(); 3689 3690 /* Clear the interface config to allow dhcp correctly configure new 3691 ip settings */ 3692 InterfaceConfiguration ifcg = null; 3693 try { 3694 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3695 if (ifcg != null) { 3696 ifcg.setLinkAddress( 3697 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3698 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3699 } 3700 } catch (Exception e) { 3701 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3702 } 3703 3704 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3705 loge("Untether initiate failed!"); 3706 } 3707 } 3708 3709 private boolean isWifiTethered(ArrayList<String> active) { 3710 3711 checkAndSetConnectivityInstance(); 3712 3713 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3714 for (String intf : active) { 3715 for (String regex : wifiRegexs) { 3716 if (intf.matches(regex)) { 3717 return true; 3718 } 3719 } 3720 } 3721 // We found no interfaces that are tethered 3722 return false; 3723 } 3724 3725 /** 3726 * Set the country code from the system setting value, if any. 3727 */ 3728 private void initializeCountryCode() { 3729 String countryCode = getCurrentCountryCode(); 3730 if (countryCode != null && !countryCode.isEmpty()) { 3731 setCountryCode(countryCode, false); 3732 } else { 3733 //use driver default 3734 } 3735 } 3736 3737 /** 3738 * Set the frequency band from the system setting value, if any. 3739 */ 3740 private void setFrequencyBand() { 3741 int band = Settings.Global.getInt(mContext.getContentResolver(), 3742 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3743 3744 if (mWifiNative.setBand(band)) { 3745 mFrequencyBand.set(band); 3746 if (PDBG) { 3747 logd("done set frequency band " + band); 3748 } 3749 } else { 3750 loge("Failed to set frequency band " + band); 3751 } 3752 } 3753 3754 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3755 if (DBG) { 3756 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3757 + " -want " + mUserWantsSuspendOpt.get() 3758 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3759 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3760 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3761 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3762 } 3763 //mWifiNative.setSuspendOptimizations(enabled); 3764 3765 if (enabled) { 3766 mSuspendOptNeedsDisabled &= ~reason; 3767 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3768 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3769 if (DBG) { 3770 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3771 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3772 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3773 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3774 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3775 } 3776 mWifiNative.setSuspendOptimizations(true); 3777 } 3778 } else { 3779 mSuspendOptNeedsDisabled |= reason; 3780 mWifiNative.setSuspendOptimizations(false); 3781 } 3782 } 3783 3784 private void setSuspendOptimizations(int reason, boolean enabled) { 3785 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3786 if (enabled) { 3787 mSuspendOptNeedsDisabled &= ~reason; 3788 } else { 3789 mSuspendOptNeedsDisabled |= reason; 3790 } 3791 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3792 } 3793 3794 private void setWifiState(int wifiState) { 3795 final int previousWifiState = mWifiState.get(); 3796 3797 try { 3798 if (wifiState == WIFI_STATE_ENABLED) { 3799 mBatteryStats.noteWifiOn(); 3800 } else if (wifiState == WIFI_STATE_DISABLED) { 3801 mBatteryStats.noteWifiOff(); 3802 } 3803 } catch (RemoteException e) { 3804 loge("Failed to note battery stats in wifi"); 3805 } 3806 3807 mWifiState.set(wifiState); 3808 3809 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3810 3811 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3812 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3813 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3814 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3815 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3816 } 3817 3818 private void setWifiApState(int wifiApState, int reason) { 3819 final int previousWifiApState = mWifiApState.get(); 3820 3821 try { 3822 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3823 mBatteryStats.noteWifiOn(); 3824 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3825 mBatteryStats.noteWifiOff(); 3826 } 3827 } catch (RemoteException e) { 3828 loge("Failed to note battery stats in wifi"); 3829 } 3830 3831 // Update state 3832 mWifiApState.set(wifiApState); 3833 3834 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3835 3836 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3837 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3838 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3839 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3840 if (wifiApState == WifiManager.WIFI_AP_STATE_FAILED) { 3841 //only set reason number when softAP start failed 3842 intent.putExtra(WifiManager.EXTRA_WIFI_AP_FAILURE_REASON, reason); 3843 } 3844 3845 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3846 } 3847 3848 private static final String IE_STR = "ie="; 3849 private static final String ID_STR = "id="; 3850 private static final String BSSID_STR = "bssid="; 3851 private static final String FREQ_STR = "freq="; 3852 private static final String LEVEL_STR = "level="; 3853 private static final String TSF_STR = "tsf="; 3854 private static final String FLAGS_STR = "flags="; 3855 private static final String SSID_STR = "ssid="; 3856 private static final String DELIMITER_STR = "===="; 3857 private static final String END_STR = "####"; 3858 3859 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3860 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3861 3862 /** 3863 * Format: 3864 * <p/> 3865 * id=1 3866 * bssid=68:7f:76:d7:1a:6e 3867 * freq=2412 3868 * level=-44 3869 * tsf=1344626243700342 3870 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3871 * ssid=zfdy 3872 * ==== 3873 * id=2 3874 * bssid=68:5f:74:d7:1a:6f 3875 * freq=5180 3876 * level=-73 3877 * tsf=1344626243700373 3878 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3879 * ssid=zuby 3880 * ==== 3881 */ 3882 private void setScanResults() { 3883 mNumScanResultsKnown = 0; 3884 mNumScanResultsReturned = 0; 3885 String bssid = ""; 3886 int level = 0; 3887 int freq = 0; 3888 long tsf = 0; 3889 String flags = ""; 3890 WifiSsid wifiSsid = null; 3891 String scanResults; 3892 String tmpResults; 3893 StringBuffer scanResultsBuf = new StringBuffer(); 3894 int sid = 0; 3895 3896 while (true) { 3897 tmpResults = mWifiNative.scanResults(sid); 3898 if (TextUtils.isEmpty(tmpResults)) break; 3899 scanResultsBuf.append(tmpResults); 3900 scanResultsBuf.append("\n"); 3901 String[] lines = tmpResults.split("\n"); 3902 sid = -1; 3903 for (int i = lines.length - 1; i >= 0; i--) { 3904 if (lines[i].startsWith(END_STR)) { 3905 break; 3906 } else if (lines[i].startsWith(ID_STR)) { 3907 try { 3908 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3909 } catch (NumberFormatException e) { 3910 // Nothing to do 3911 } 3912 break; 3913 } 3914 } 3915 if (sid == -1) break; 3916 } 3917 3918 scanResults = scanResultsBuf.toString(); 3919 3920 if (TextUtils.isEmpty(scanResults)) { 3921 mScanResults = new ArrayList<>(); 3922 return; 3923 } 3924 3925 mWifiConfigStore.trimANQPCache(false); 3926 3927 // note that all these splits and substrings keep references to the original 3928 // huge string buffer while the amount we really want is generally pretty small 3929 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3930 synchronized (mScanResultCache) { 3931 mScanResults = new ArrayList<>(); 3932 String[] lines = scanResults.split("\n"); 3933 final int bssidStrLen = BSSID_STR.length(); 3934 final int flagLen = FLAGS_STR.length(); 3935 String infoElements = null; 3936 List<String> anqpLines = null; 3937 3938 for (String line : lines) { 3939 if (line.startsWith(BSSID_STR)) { 3940 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3941 } else if (line.startsWith(FREQ_STR)) { 3942 try { 3943 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3944 } catch (NumberFormatException e) { 3945 freq = 0; 3946 } 3947 } else if (line.startsWith(LEVEL_STR)) { 3948 try { 3949 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3950 /* some implementations avoid negative values by adding 256 3951 * so we need to adjust for that here. 3952 */ 3953 if (level > 0) level -= 256; 3954 } catch (NumberFormatException e) { 3955 level = 0; 3956 } 3957 } else if (line.startsWith(TSF_STR)) { 3958 try { 3959 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3960 } catch (NumberFormatException e) { 3961 tsf = 0; 3962 } 3963 } else if (line.startsWith(FLAGS_STR)) { 3964 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3965 } else if (line.startsWith(SSID_STR)) { 3966 wifiSsid = WifiSsid.createFromAsciiEncoded( 3967 line.substring(SSID_STR.length())); 3968 } else if (line.startsWith(IE_STR)) { 3969 infoElements = line; 3970 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3971 if (anqpLines == null) { 3972 anqpLines = new ArrayList<>(); 3973 } 3974 anqpLines.add(line); 3975 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3976 if (bssid != null) { 3977 try { 3978 NetworkDetail networkDetail = 3979 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3980 3981 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3982 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3983 logd(String.format( 3984 "Inconsistent SSID on BSSID '%s': '%s' vs '%s': %s", 3985 bssid, xssid, networkDetail.getSSID(), infoElements)); 3986 } 3987 3988 if (networkDetail.hasInterworking()) { 3989 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3990 } 3991 3992 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3993 if (scanDetail != null) { 3994 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3995 flags, freq, tsf); 3996 } else { 3997 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3998 flags, level, freq, tsf); 3999 mScanResultCache.put(networkDetail, scanDetail); 4000 } 4001 4002 mNumScanResultsReturned++; // Keep track of how many scan results we got 4003 // as part of this scan's processing 4004 mScanResults.add(scanDetail); 4005 } catch (IllegalArgumentException iae) { 4006 Log.d(TAG, "Failed to parse information elements: " + iae); 4007 } 4008 } 4009 bssid = null; 4010 level = 0; 4011 freq = 0; 4012 tsf = 0; 4013 flags = ""; 4014 wifiSsid = null; 4015 infoElements = null; 4016 anqpLines = null; 4017 } 4018 } 4019 } 4020 4021 /* don't attempt autojoin if last connect attempt was just scheduled */ 4022 boolean attemptAutoJoin = 4023 (System.currentTimeMillis() - lastConnectAttemptTimestamp) > CONNECT_TIMEOUT_MSEC; 4024 SupplicantState state = mWifiInfo.getSupplicantState(); 4025 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 4026 if (getCurrentState() == mRoamingState 4027 || getCurrentState() == mObtainingIpState 4028 || getCurrentState() == mScanModeState 4029 || getCurrentState() == mDisconnectingState 4030 || (getCurrentState() == mConnectedState 4031 && !getEnableAutoJoinWhenAssociated()) 4032 || linkDebouncing 4033 || state == SupplicantState.ASSOCIATING 4034 || state == SupplicantState.AUTHENTICATING 4035 || state == SupplicantState.FOUR_WAY_HANDSHAKE 4036 || state == SupplicantState.GROUP_HANDSHAKE 4037 || (/* keep autojoin enabled if user has manually selected a wifi network, 4038 so as to make sure we reliably remain connected to this network */ 4039 mConnectionRequests == 0 && selection == null) 4040 || mInDelayedStop) { 4041 // Dont attempt auto-joining again while we are already attempting to join 4042 // and/or obtaining Ip address 4043 attemptAutoJoin = false; 4044 } 4045 if (DBG) { 4046 if (selection == null) { 4047 selection = "<none>"; 4048 } 4049 logd("wifi setScanResults state" + getCurrentState() 4050 + " sup_state=" + state 4051 + " debouncing=" + linkDebouncing 4052 + " mConnectionRequests=" + mConnectionRequests 4053 + " selection=" + selection 4054 + " mNumScanResultsReturned " + mNumScanResultsReturned 4055 + " mScanResults " + mScanResults.size()); 4056 } 4057 if (attemptAutoJoin) { 4058 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 4059 } 4060 // Loose last selected configuration if we have been disconnected for 5 minutes 4061 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 4062 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 4063 } 4064 4065 if (attemptAutoJoin) { 4066 synchronized (mScanResultCache) { 4067 // AutoJoincontroller will directly acces the scan result list and update it with 4068 // ScanResult status 4069 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 4070 } 4071 } 4072 if (linkDebouncing) { 4073 // If debouncing, we dont re-select a SSID or BSSID hence 4074 // there is no need to call the network selection code 4075 // in WifiAutoJoinController, instead, 4076 // just try to reconnect to the same SSID by triggering a roam 4077 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 4078 } 4079 } 4080 4081 /* 4082 * Fetch RSSI, linkspeed, and frequency on current connection 4083 */ 4084 private void fetchRssiLinkSpeedAndFrequencyNative() { 4085 Integer newRssi = null; 4086 Integer newLinkSpeed = null; 4087 Integer newFrequency = null; 4088 4089 String signalPoll = mWifiNative.signalPoll(); 4090 4091 if (signalPoll != null) { 4092 String[] lines = signalPoll.split("\n"); 4093 for (String line : lines) { 4094 String[] prop = line.split("="); 4095 if (prop.length < 2) continue; 4096 try { 4097 if (prop[0].equals("RSSI")) { 4098 newRssi = Integer.parseInt(prop[1]); 4099 } else if (prop[0].equals("LINKSPEED")) { 4100 newLinkSpeed = Integer.parseInt(prop[1]); 4101 } else if (prop[0].equals("FREQUENCY")) { 4102 newFrequency = Integer.parseInt(prop[1]); 4103 } 4104 } catch (NumberFormatException e) { 4105 //Ignore, defaults on rssi and linkspeed are assigned 4106 } 4107 } 4108 } 4109 4110 if (PDBG) { 4111 logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi + 4112 " linkspeed=" + newLinkSpeed + " freq=" + newFrequency); 4113 } 4114 4115 if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 4116 // screen out invalid values 4117 /* some implementations avoid negative values by adding 256 4118 * so we need to adjust for that here. 4119 */ 4120 if (newRssi > 0) newRssi -= 256; 4121 mWifiInfo.setRssi(newRssi); 4122 /* 4123 * Rather then sending the raw RSSI out every time it 4124 * changes, we precalculate the signal level that would 4125 * be displayed in the status bar, and only send the 4126 * broadcast if that much more coarse-grained number 4127 * changes. This cuts down greatly on the number of 4128 * broadcasts, at the cost of not informing others 4129 * interested in RSSI of all the changes in signal 4130 * level. 4131 */ 4132 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 4133 if (newSignalLevel != mLastSignalLevel) { 4134 updateCapabilities(getCurrentWifiConfiguration()); 4135 sendRssiChangeBroadcast(newRssi); 4136 } 4137 mLastSignalLevel = newSignalLevel; 4138 } else { 4139 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 4140 updateCapabilities(getCurrentWifiConfiguration()); 4141 } 4142 4143 if (newLinkSpeed != null) { 4144 mWifiInfo.setLinkSpeed(newLinkSpeed); 4145 } 4146 if (newFrequency != null && newFrequency > 0) { 4147 if (ScanResult.is5GHz(newFrequency)) { 4148 mWifiConnectionStatistics.num5GhzConnected++; 4149 } 4150 if (ScanResult.is24GHz(newFrequency)) { 4151 mWifiConnectionStatistics.num24GhzConnected++; 4152 } 4153 mWifiInfo.setFrequency(newFrequency); 4154 } 4155 mWifiConfigStore.updateConfiguration(mWifiInfo); 4156 } 4157 4158 /** 4159 * Determine if we need to switch network: 4160 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 4161 * - match the uregncy of the switch versus the packet usage at the interface 4162 */ 4163 boolean shouldSwitchNetwork(int networkDelta) { 4164 int delta; 4165 if (networkDelta <= 0) { 4166 return false; 4167 } 4168 delta = networkDelta; 4169 if (mWifiInfo != null) { 4170 if (!getEnableAutoJoinWhenAssociated() 4171 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 4172 // If AutoJoin while associated is not enabled, 4173 // we should never switch network when already associated 4174 delta = -1000; 4175 } else { 4176 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 4177 // TODO: at the interface. We should also discriminate between ucast and mcast, 4178 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 4179 // TODO: broadcasts 4180 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 4181 delta -= 999; 4182 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 4183 delta -= 6; 4184 } 4185 logd("shouldSwitchNetwork " 4186 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4187 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4188 + " delta " + networkDelta + " -> " + delta); 4189 } 4190 } else { 4191 logd("shouldSwitchNetwork " 4192 + " delta " + networkDelta + " -> " + delta); 4193 } 4194 if (delta > 0) { 4195 return true; 4196 } 4197 return false; 4198 } 4199 4200 // Polling has completed, hence we wont have a score anymore 4201 private void cleanWifiScore() { 4202 mWifiInfo.txBadRate = 0; 4203 mWifiInfo.txSuccessRate = 0; 4204 mWifiInfo.txRetriesRate = 0; 4205 mWifiInfo.rxSuccessRate = 0; 4206 } 4207 4208 int mBadLinkspeedcount = 0; 4209 4210 // For debug, provide information about the last scoring operation 4211 String wifiScoringReport = null; 4212 4213 private void calculateWifiScore(WifiLinkLayerStats stats) { 4214 StringBuilder sb = new StringBuilder(); 4215 4216 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 4217 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 4218 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 4219 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4220 < mWifiConfigStore.badLinkSpeed5); 4221 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 4222 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 4223 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4224 >= mWifiConfigStore.goodLinkSpeed5); 4225 4226 if (isBadLinkspeed) { 4227 if (mBadLinkspeedcount < 6) 4228 mBadLinkspeedcount++; 4229 } else { 4230 if (mBadLinkspeedcount > 0) 4231 mBadLinkspeedcount--; 4232 } 4233 4234 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4235 if (isGoodLinkspeed) sb.append(" gl"); 4236 4237 /** 4238 * We want to make sure that we use the 24GHz RSSI thresholds if 4239 * there are 2.4GHz scan results 4240 * otherwise we end up lowering the score based on 5GHz values 4241 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4242 * We also might unblacklist the configuation based on 2.4GHz 4243 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4244 */ 4245 boolean use24Thresholds = false; 4246 boolean homeNetworkBoost = false; 4247 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4248 ScanDetailCache scanDetailCache = 4249 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4250 if (currentConfiguration != null && scanDetailCache != null) { 4251 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4252 if (currentConfiguration.visibility != null) { 4253 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4254 && currentConfiguration.visibility.rssi24 4255 >= (currentConfiguration.visibility.rssi5 - 2)) { 4256 use24Thresholds = true; 4257 } 4258 } 4259 if (scanDetailCache.size() <= 6 4260 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4261 && currentConfiguration.allowedKeyManagement. 4262 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4263 // A PSK network with less than 6 known BSSIDs 4264 // This is most likely a home network and thus we want to stick to wifi more 4265 homeNetworkBoost = true; 4266 } 4267 } 4268 if (homeNetworkBoost) sb.append(" hn"); 4269 if (use24Thresholds) sb.append(" u24"); 4270 4271 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4272 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4273 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4274 4275 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4276 4277 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4278 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4279 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4280 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4281 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4282 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4283 4284 if (isBadRSSI) sb.append(" br"); 4285 if (isLowRSSI) sb.append(" lr"); 4286 if (isHighRSSI) sb.append(" hr"); 4287 4288 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4289 if (currentConfiguration != null && 4290 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4291 if (isBadRSSI) { 4292 currentConfiguration.numTicksAtBadRSSI++; 4293 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4294 // We remained associated for a compound amount of time while passing 4295 // traffic, hence loose the corresponding user triggered disabled stats 4296 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4297 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4298 } 4299 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4300 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4301 } 4302 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4303 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4304 } 4305 currentConfiguration.numTicksAtBadRSSI = 0; 4306 } 4307 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4308 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4309 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4310 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4311 score = score - 5; 4312 penalizedDueToUserTriggeredDisconnect = 1; 4313 sb.append(" p1"); 4314 } 4315 } else if (isLowRSSI) { 4316 currentConfiguration.numTicksAtLowRSSI++; 4317 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4318 // We remained associated for a compound amount of time while passing 4319 // traffic, hence loose the corresponding user triggered disabled stats 4320 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4321 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4322 } 4323 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4324 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4325 } 4326 currentConfiguration.numTicksAtLowRSSI = 0; 4327 } 4328 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4329 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4330 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4331 score = score - 5; 4332 penalizedDueToUserTriggeredDisconnect = 2; 4333 sb.append(" p2"); 4334 } 4335 } else if (!isHighRSSI) { 4336 currentConfiguration.numTicksAtNotHighRSSI++; 4337 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4338 // We remained associated for a compound amount of time while passing 4339 // traffic, hence loose the corresponding user triggered disabled stats 4340 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4341 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4342 } 4343 currentConfiguration.numTicksAtNotHighRSSI = 0; 4344 } 4345 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4346 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4347 score = score - 5; 4348 penalizedDueToUserTriggeredDisconnect = 3; 4349 sb.append(" p3"); 4350 } 4351 } 4352 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4353 currentConfiguration.numTicksAtLowRSSI, 4354 currentConfiguration.numTicksAtNotHighRSSI)); 4355 } 4356 4357 if (PDBG) { 4358 String rssiStatus = ""; 4359 if (isBadRSSI) rssiStatus += " badRSSI "; 4360 else if (isHighRSSI) rssiStatus += " highRSSI "; 4361 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4362 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4363 logd("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4364 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4365 + " score=" + Integer.toString(mWifiInfo.score) 4366 + rssiStatus 4367 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4368 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4369 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4370 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4371 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4372 } 4373 4374 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4375 && (isBadRSSI || isLowRSSI)) { 4376 // Link is stuck 4377 if (mWifiInfo.linkStuckCount < 5) 4378 mWifiInfo.linkStuckCount += 1; 4379 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4380 if (PDBG) logd(" bad link -> stuck count =" 4381 + Integer.toString(mWifiInfo.linkStuckCount)); 4382 } else if (mWifiInfo.txBadRate < 0.3) { 4383 if (mWifiInfo.linkStuckCount > 0) 4384 mWifiInfo.linkStuckCount -= 1; 4385 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4386 if (PDBG) logd(" good link -> stuck count =" 4387 + Integer.toString(mWifiInfo.linkStuckCount)); 4388 } 4389 4390 sb.append(String.format(" [%d", score)); 4391 4392 if (mWifiInfo.linkStuckCount > 1) { 4393 // Once link gets stuck for more than 3 seconds, start reducing the score 4394 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4395 } 4396 sb.append(String.format(",%d", score)); 4397 4398 if (isBadLinkspeed) { 4399 score -= 4; 4400 if (PDBG) { 4401 logd(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4402 + " score=" + Integer.toString(score)); 4403 } 4404 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4405 score += 4; // So as bad rssi alone dont kill us 4406 } 4407 sb.append(String.format(",%d", score)); 4408 4409 if (isBadRSSI) { 4410 if (mWifiInfo.badRssiCount < 7) 4411 mWifiInfo.badRssiCount += 1; 4412 } else if (isLowRSSI) { 4413 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4414 if (mWifiInfo.badRssiCount > 0) { 4415 // Decrement bad Rssi count 4416 mWifiInfo.badRssiCount -= 1; 4417 } 4418 } else { 4419 mWifiInfo.badRssiCount = 0; 4420 mWifiInfo.lowRssiCount = 0; 4421 } 4422 4423 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4424 sb.append(String.format(",%d", score)); 4425 4426 if (PDBG) logd(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4427 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4428 + " --> score " + Integer.toString(score)); 4429 4430 4431 if (isHighRSSI) { 4432 score += 5; 4433 if (PDBG) logd(" isHighRSSI ---> score=" + Integer.toString(score)); 4434 } 4435 sb.append(String.format(",%d]", score)); 4436 4437 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4438 4439 //sanitize boundaries 4440 if (score > NetworkAgent.WIFI_BASE_SCORE) 4441 score = NetworkAgent.WIFI_BASE_SCORE; 4442 if (score < 0) 4443 score = 0; 4444 4445 //report score 4446 if (score != mWifiInfo.score) { 4447 if (DBG) { 4448 logd("calculateWifiScore() report new score " + Integer.toString(score)); 4449 } 4450 mWifiInfo.score = score; 4451 if (mNetworkAgent != null) { 4452 mNetworkAgent.sendNetworkScore(score); 4453 } 4454 } 4455 wifiScoringReport = sb.toString(); 4456 } 4457 4458 public double getTxPacketRate() { 4459 if (mWifiInfo != null) { 4460 return mWifiInfo.txSuccessRate; 4461 } 4462 return -1; 4463 } 4464 4465 public double getRxPacketRate() { 4466 if (mWifiInfo != null) { 4467 return mWifiInfo.rxSuccessRate; 4468 } 4469 return -1; 4470 } 4471 4472 /** 4473 * Fetch TX packet counters on current connection 4474 */ 4475 private void fetchPktcntNative(RssiPacketCountInfo info) { 4476 String pktcntPoll = mWifiNative.pktcntPoll(); 4477 4478 if (pktcntPoll != null) { 4479 String[] lines = pktcntPoll.split("\n"); 4480 for (String line : lines) { 4481 String[] prop = line.split("="); 4482 if (prop.length < 2) continue; 4483 try { 4484 if (prop[0].equals("TXGOOD")) { 4485 info.txgood = Integer.parseInt(prop[1]); 4486 } else if (prop[0].equals("TXBAD")) { 4487 info.txbad = Integer.parseInt(prop[1]); 4488 } 4489 } catch (NumberFormatException e) { 4490 // Ignore 4491 } 4492 } 4493 } 4494 } 4495 4496 private boolean clearIPv4Address(String iface) { 4497 try { 4498 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4499 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4500 mNwService.setInterfaceConfig(iface, ifcg); 4501 return true; 4502 } catch (RemoteException e) { 4503 return false; 4504 } 4505 } 4506 4507 private boolean isProvisioned(LinkProperties lp) { 4508 return lp.isProvisioned() || 4509 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4510 } 4511 4512 /** 4513 * Creates a new LinkProperties object by merging information from various sources. 4514 * <p/> 4515 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4516 * netlink, static configuration, ...). When one of these sources of information has updated 4517 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4518 * information that came from other sources. Instead, when one of those sources has new 4519 * information, we update the object that tracks the information from that source and then 4520 * call this method to integrate the change into a new LinkProperties object for subsequent 4521 * comparison with mLinkProperties. 4522 * <p/> 4523 * The information used to build LinkProperties is currently obtained as follows: 4524 * - Interface name: set in the constructor. 4525 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4526 * - IPv4 routes, DNS servers, and domains: DHCP. 4527 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4528 * - HTTP proxy: the wifi config store. 4529 */ 4530 private LinkProperties makeLinkProperties() { 4531 LinkProperties newLp = new LinkProperties(); 4532 4533 // Interface name, proxy, and TCP buffer sizes are locally configured. 4534 newLp.setInterfaceName(mInterfaceName); 4535 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4536 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4537 newLp.setTcpBufferSizes(mTcpBufferSizes); 4538 } 4539 4540 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4541 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4542 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4543 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4544 newLp.addRoute(route); 4545 } 4546 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4547 // Only add likely reachable DNS servers. 4548 // TODO: investigate deleting this. 4549 if (newLp.isReachable(dns)) { 4550 newLp.addDnsServer(dns); 4551 } 4552 } 4553 4554 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4555 synchronized (mDhcpResultsLock) { 4556 // Even when we're using static configuration, we don't need to look at the config 4557 // store, because static IP configuration also populates mDhcpResults. 4558 if ((mDhcpResults != null)) { 4559 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4560 newLp.addRoute(route); 4561 } 4562 for (InetAddress dns : mDhcpResults.dnsServers) { 4563 // Only add likely reachable DNS servers. 4564 // TODO: investigate deleting this. 4565 if (newLp.isReachable(dns)) { 4566 newLp.addDnsServer(dns); 4567 } 4568 } 4569 newLp.setDomains(mDhcpResults.domains); 4570 } 4571 } 4572 4573 return newLp; 4574 } 4575 4576 private void updateLinkProperties(int reason) { 4577 LinkProperties newLp = makeLinkProperties(); 4578 4579 final boolean linkChanged = !newLp.equals(mLinkProperties); 4580 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4581 final boolean isProvisioned = isProvisioned(newLp); 4582 // TODO: Teach LinkProperties how to understand static assignment 4583 // and simplify all this provisioning change detection logic by 4584 // unifying it under LinkProperties.compareProvisioning(). 4585 final boolean lostProvisioning = 4586 (wasProvisioned && !isProvisioned) || 4587 (mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address()) || 4588 (mLinkProperties.isIPv6Provisioned() && !newLp.isIPv6Provisioned()); 4589 final DetailedState detailedState = getNetworkDetailedState(); 4590 4591 if (linkChanged) { 4592 if (DBG) { 4593 log("Link configuration changed for netId: " + mLastNetworkId 4594 + " old: " + mLinkProperties + " new: " + newLp); 4595 } 4596 mLinkProperties = newLp; 4597 if (mIpReachabilityMonitor != null) { 4598 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4599 } 4600 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4601 } 4602 4603 if (lostProvisioning) { 4604 log("Lost IP layer provisioning!" + 4605 " was: " + mLinkProperties + 4606 " now: " + newLp); 4607 } 4608 4609 if (DBG) { 4610 StringBuilder sb = new StringBuilder(); 4611 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4612 sb.append(" state: " + detailedState); 4613 sb.append(" reason: " + smToString(reason)); 4614 4615 if (mLinkProperties != null) { 4616 if (mLinkProperties.hasIPv4Address()) { 4617 sb.append(" v4"); 4618 } 4619 if (mLinkProperties.hasGlobalIPv6Address()) { 4620 sb.append(" v6"); 4621 } 4622 if (mLinkProperties.hasIPv4DefaultRoute()) { 4623 sb.append(" v4r"); 4624 } 4625 if (mLinkProperties.hasIPv6DefaultRoute()) { 4626 sb.append(" v6r"); 4627 } 4628 if (mLinkProperties.hasIPv4DnsServer()) { 4629 sb.append(" v4dns"); 4630 } 4631 if (mLinkProperties.hasIPv6DnsServer()) { 4632 sb.append(" v6dns"); 4633 } 4634 if (isProvisioned) { 4635 sb.append(" isprov"); 4636 } 4637 } 4638 logd(sb.toString()); 4639 } 4640 4641 // If we just configured or lost IP configuration, do the needful. 4642 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4643 // here because those should only be called if we're attempting to connect or already 4644 // connected, whereas updateLinkProperties can be called at any time. 4645 switch (reason) { 4646 case DhcpStateMachine.DHCP_SUCCESS: 4647 case CMD_STATIC_IP_SUCCESS: 4648 // IPv4 provisioning succeded. Advance to connected state. 4649 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4650 if (!isProvisioned) { 4651 // Can never happen unless DHCP reports success but isProvisioned thinks the 4652 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4653 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4654 // TODO: disconnect here instead. If our configuration is not usable, there's no 4655 // point in staying connected, and if mLinkProperties is out of sync with 4656 // reality, that will cause problems in the future. 4657 logd("IPv4 config succeeded, but not provisioned"); 4658 } 4659 break; 4660 4661 case DhcpStateMachine.DHCP_FAILURE: 4662 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4663 // give up and disconnect. 4664 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4665 if (!isProvisioned || lostProvisioning) { 4666 sendMessage(CMD_IP_CONFIGURATION_LOST); 4667 } else { 4668 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4669 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4670 4671 // To be sure we don't get stuck with a non-working network if all we had is 4672 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4673 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4674 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4675 // necessary for provisioning, its deletion will cause us to disconnect. 4676 // 4677 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4678 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4679 // not return true if we're using DHCP and don't have an IPv4 default route. So 4680 // for now it's only here for extra redundancy. However, it will increase 4681 // robustness if we move to getting IPv4 routes from netlink as well. 4682 loge("DHCP failure: provisioned, clearing IPv4 address."); 4683 if (!clearIPv4Address(mInterfaceName)) { 4684 sendMessage(CMD_IP_CONFIGURATION_LOST); 4685 } 4686 } 4687 break; 4688 4689 case CMD_STATIC_IP_FAILURE: 4690 // Static configuration was invalid, or an error occurred in applying it. Give up. 4691 sendMessage(CMD_IP_CONFIGURATION_LOST); 4692 break; 4693 4694 case CMD_UPDATE_LINKPROPERTIES: 4695 // IP addresses, DNS servers, etc. changed. Act accordingly. 4696 if (lostProvisioning) { 4697 // We no longer have a usable network configuration. Disconnect. 4698 sendMessage(CMD_IP_CONFIGURATION_LOST); 4699 } else if (!wasProvisioned && isProvisioned) { 4700 // We have a usable IPv6-only config. Advance to connected state. 4701 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4702 } 4703 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4704 // If anything has changed and we're already connected, send out a notification. 4705 sendLinkConfigurationChangedBroadcast(); 4706 } 4707 break; 4708 } 4709 } 4710 4711 /** 4712 * Clears all our link properties. 4713 */ 4714 private void clearLinkProperties() { 4715 // Clear the link properties obtained from DHCP and netlink. 4716 synchronized (mDhcpResultsLock) { 4717 if (mDhcpResults != null) { 4718 mDhcpResults.clear(); 4719 } 4720 } 4721 mNetlinkTracker.clearLinkProperties(); 4722 if (mIpReachabilityMonitor != null) { 4723 mIpReachabilityMonitor.clearLinkProperties(); 4724 } 4725 4726 // Now clear the merged link properties. 4727 mLinkProperties.clear(); 4728 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4729 } 4730 4731 /** 4732 * try to update default route MAC address. 4733 */ 4734 private String updateDefaultRouteMacAddress(int timeout) { 4735 String address = null; 4736 for (RouteInfo route : mLinkProperties.getRoutes()) { 4737 if (route.isDefaultRoute() && route.hasGateway()) { 4738 InetAddress gateway = route.getGateway(); 4739 if (gateway instanceof Inet4Address) { 4740 if (PDBG) { 4741 logd("updateDefaultRouteMacAddress found Ipv4 default :" 4742 + gateway.getHostAddress()); 4743 } 4744 address = macAddressFromRoute(gateway.getHostAddress()); 4745 /* The gateway's MAC address is known */ 4746 if ((address == null) && (timeout > 0)) { 4747 boolean reachable = false; 4748 try { 4749 reachable = gateway.isReachable(timeout); 4750 } catch (Exception e) { 4751 loge("updateDefaultRouteMacAddress exception reaching :" 4752 + gateway.getHostAddress()); 4753 4754 } finally { 4755 if (reachable == true) { 4756 4757 address = macAddressFromRoute(gateway.getHostAddress()); 4758 if (PDBG) { 4759 logd("updateDefaultRouteMacAddress reachable (tried again) :" 4760 + gateway.getHostAddress() + " found " + address); 4761 } 4762 } 4763 } 4764 } 4765 if (address != null) { 4766 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4767 } 4768 } 4769 } 4770 } 4771 return address; 4772 } 4773 4774 void sendScanResultsAvailableBroadcast(boolean scanSucceeded) { 4775 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4776 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4777 intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, scanSucceeded); 4778 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4779 } 4780 4781 private void sendRssiChangeBroadcast(final int newRssi) { 4782 try { 4783 mBatteryStats.noteWifiRssiChanged(newRssi); 4784 } catch (RemoteException e) { 4785 // Won't happen. 4786 } 4787 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4788 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4789 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4790 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4791 } 4792 4793 private void sendNetworkStateChangeBroadcast(String bssid) { 4794 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4795 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4796 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4797 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4798 if (bssid != null) 4799 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4800 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4801 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4802 // We no longer report MAC address to third-parties and our code does 4803 // not rely on this broadcast, so just send the default MAC address. 4804 WifiInfo sentWifiInfo = new WifiInfo(mWifiInfo); 4805 sentWifiInfo.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4806 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, sentWifiInfo); 4807 } 4808 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4809 } 4810 4811 private WifiInfo getWiFiInfoForUid(int uid) { 4812 if (Binder.getCallingUid() == Process.myUid()) { 4813 return mWifiInfo; 4814 } 4815 4816 WifiInfo result = new WifiInfo(mWifiInfo); 4817 result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS); 4818 4819 IBinder binder = ServiceManager.getService("package"); 4820 IPackageManager packageManager = IPackageManager.Stub.asInterface(binder); 4821 4822 try { 4823 if (packageManager.checkUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, 4824 uid) == PackageManager.PERMISSION_GRANTED) { 4825 result.setMacAddress(mWifiInfo.getMacAddress()); 4826 } 4827 } catch (RemoteException e) { 4828 Log.e(TAG, "Error checking receiver permission", e); 4829 } 4830 4831 return result; 4832 } 4833 4834 private void sendLinkConfigurationChangedBroadcast() { 4835 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4836 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4837 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4838 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4839 } 4840 4841 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4842 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4843 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4844 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4845 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4846 } 4847 4848 /** 4849 * Record the detailed state of a network. 4850 * 4851 * @param state the new {@code DetailedState} 4852 */ 4853 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4854 boolean hidden = false; 4855 4856 if (linkDebouncing || isRoaming()) { 4857 // There is generally a confusion in the system about colluding 4858 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4859 // which leads to multiple confusion. 4860 // 4861 // If link is de-bouncing or roaming, we already have an IP address 4862 // as well we were connected and are doing L2 cycles of 4863 // reconnecting or renewing IP address to check that we still have it 4864 // This L2 link flapping should ne be reflected into the Network state 4865 // which is the state of the WiFi Network visible to Layer 3 and applications 4866 // Note that once debouncing and roaming are completed, we will 4867 // set the Network state to where it should be, or leave it as unchanged 4868 // 4869 hidden = true; 4870 } 4871 if (DBG) { 4872 log("setDetailed state, old =" 4873 + mNetworkInfo.getDetailedState() + " and new state=" + state 4874 + " hidden=" + hidden); 4875 } 4876 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4877 // Always indicate that SSID has changed 4878 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4879 if (DBG) { 4880 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4881 } 4882 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4883 sendNetworkStateChangeBroadcast(null); 4884 } 4885 } 4886 if (hidden == true) { 4887 return false; 4888 } 4889 4890 if (state != mNetworkInfo.getDetailedState()) { 4891 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4892 if (mNetworkAgent != null) { 4893 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4894 } 4895 sendNetworkStateChangeBroadcast(null); 4896 return true; 4897 } 4898 return false; 4899 } 4900 4901 private DetailedState getNetworkDetailedState() { 4902 return mNetworkInfo.getDetailedState(); 4903 } 4904 4905 private SupplicantState handleSupplicantStateChange(Message message) { 4906 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4907 SupplicantState state = stateChangeResult.state; 4908 // Supplicant state change 4909 // [31-13] Reserved for future use 4910 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4911 // 50023 supplicant_state_changed (custom|1|5) 4912 mWifiInfo.setSupplicantState(state); 4913 // Network id is only valid when we start connecting 4914 if (SupplicantState.isConnecting(state)) { 4915 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4916 } else { 4917 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4918 } 4919 4920 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4921 4922 if (mWhiteListedSsids != null 4923 && mWhiteListedSsids.length > 0 4924 && stateChangeResult.wifiSsid != null) { 4925 String SSID = stateChangeResult.wifiSsid.toString(); 4926 String currentSSID = mWifiInfo.getSSID(); 4927 if (SSID != null 4928 && currentSSID != null 4929 && !SSID.equals(WifiSsid.NONE)) { 4930 // Remove quote before comparing 4931 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4932 && SSID.charAt(SSID.length() - 1) == '"') 4933 { 4934 SSID = SSID.substring(1, SSID.length() - 1); 4935 } 4936 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4937 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4938 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4939 } 4940 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4941 lastConnectAttemptTimestamp = System.currentTimeMillis(); 4942 targetWificonfiguration 4943 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4944 transitionTo(mRoamingState); 4945 } 4946 } 4947 } 4948 4949 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4950 mWifiInfo.setEphemeral(mWifiConfigStore.isEphemeral(mWifiInfo.getNetworkId())); 4951 4952 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4953 4954 return state; 4955 } 4956 4957 /** 4958 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4959 * using the interface, stopping DHCP & disabling interface 4960 */ 4961 private void handleNetworkDisconnect() { 4962 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4963 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4964 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4965 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4966 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4967 4968 stopRssiMonitoringOffload(); 4969 4970 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4971 4972 stopDhcp(); 4973 4974 try { 4975 mNwService.clearInterfaceAddresses(mInterfaceName); 4976 mNwService.disableIpv6(mInterfaceName); 4977 } catch (Exception e) { 4978 loge("Failed to clear addresses or disable ipv6" + e); 4979 } 4980 4981 /* Reset data structures */ 4982 mBadLinkspeedcount = 0; 4983 mWifiInfo.reset(); 4984 linkDebouncing = false; 4985 /* Reset roaming parameters */ 4986 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4987 4988 /** 4989 * fullBandConnectedTimeIntervalMilli: 4990 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4991 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4992 * Initialize to sane value = 20 seconds 4993 */ 4994 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4995 4996 setNetworkDetailedState(DetailedState.DISCONNECTED); 4997 if (mNetworkAgent != null) { 4998 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4999 mNetworkAgent = null; 5000 } 5001 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 5002 5003 /* Clear network properties */ 5004 clearLinkProperties(); 5005 5006 /* Cend event to CM & network change broadcast */ 5007 sendNetworkStateChangeBroadcast(mLastBssid); 5008 5009 /* Cancel auto roam requests */ 5010 autoRoamSetBSSID(mLastNetworkId, "any"); 5011 5012 mLastBssid = null; 5013 registerDisconnected(); 5014 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5015 } 5016 5017 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 5018 /* Socket connection can be lost when we do a graceful shutdown 5019 * or when the driver is hung. Ensure supplicant is stopped here. 5020 */ 5021 if (killSupplicant) { 5022 mWifiMonitor.killSupplicant(mP2pSupported); 5023 } 5024 mWifiNative.closeSupplicantConnection(); 5025 sendSupplicantConnectionChangedBroadcast(false); 5026 setWifiState(WIFI_STATE_DISABLED); 5027 } 5028 5029 void handlePreDhcpSetup() { 5030 mDhcpActive = true; 5031 if (!mBluetoothConnectionActive) { 5032 /* 5033 * There are problems setting the Wi-Fi driver's power 5034 * mode to active when bluetooth coexistence mode is 5035 * enabled or sense. 5036 * <p> 5037 * We set Wi-Fi to active mode when 5038 * obtaining an IP address because we've found 5039 * compatibility issues with some routers with low power 5040 * mode. 5041 * <p> 5042 * In order for this active power mode to properly be set, 5043 * we disable coexistence mode until we're done with 5044 * obtaining an IP address. One exception is if we 5045 * are currently connected to a headset, since disabling 5046 * coexistence would interrupt that connection. 5047 */ 5048 // Disable the coexistence mode 5049 mWifiNative.setBluetoothCoexistenceMode( 5050 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 5051 } 5052 5053 // Disable power save and suspend optimizations during DHCP 5054 // Note: The order here is important for now. Brcm driver changes 5055 // power settings when we control suspend mode optimizations. 5056 // TODO: Remove this comment when the driver is fixed. 5057 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 5058 mWifiNative.setPowerSave(false); 5059 5060 // Update link layer stats 5061 getWifiLinkLayerStats(false); 5062 5063 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 5064 Message msg = new Message(); 5065 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 5066 msg.arg1 = WifiP2pServiceImpl.ENABLED; 5067 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 5068 msg.obj = mDhcpStateMachine; 5069 mWifiP2pChannel.sendMessage(msg); 5070 } 5071 5072 5073 private boolean useLegacyDhcpClient() { 5074 return Settings.Global.getInt( 5075 mContext.getContentResolver(), 5076 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 5077 } 5078 5079 private void maybeInitDhcpStateMachine() { 5080 if (mDhcpStateMachine == null) { 5081 if (useLegacyDhcpClient()) { 5082 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 5083 mContext, WifiStateMachine.this, mInterfaceName); 5084 } else { 5085 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 5086 mContext, WifiStateMachine.this, mInterfaceName); 5087 } 5088 } 5089 } 5090 5091 void startDhcp() { 5092 maybeInitDhcpStateMachine(); 5093 mDhcpStateMachine.registerForPreDhcpNotification(); 5094 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 5095 } 5096 5097 void renewDhcp() { 5098 maybeInitDhcpStateMachine(); 5099 mDhcpStateMachine.registerForPreDhcpNotification(); 5100 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 5101 } 5102 5103 void stopDhcp() { 5104 if (mDhcpStateMachine != null) { 5105 /* In case we were in middle of DHCP operation restore back powermode */ 5106 handlePostDhcpSetup(); 5107 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 5108 } 5109 } 5110 5111 void handlePostDhcpSetup() { 5112 /* Restore power save and suspend optimizations */ 5113 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 5114 mWifiNative.setPowerSave(true); 5115 5116 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 5117 5118 // Set the coexistence mode back to its default value 5119 mWifiNative.setBluetoothCoexistenceMode( 5120 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 5121 5122 mDhcpActive = false; 5123 } 5124 5125 void connectScanningService() { 5126 5127 if (mWifiScanner == null) { 5128 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 5129 } 5130 } 5131 5132 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 5133 5134 if (PDBG) { 5135 logd("handleIPv4Success <" + dhcpResults.toString() + ">"); 5136 logd("link address " + dhcpResults.ipAddress); 5137 } 5138 5139 Inet4Address addr; 5140 synchronized (mDhcpResultsLock) { 5141 mDhcpResults = dhcpResults; 5142 addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 5143 } 5144 5145 if (isRoaming()) { 5146 int previousAddress = mWifiInfo.getIpAddress(); 5147 int newAddress = NetworkUtils.inetAddressToInt(addr); 5148 if (previousAddress != newAddress) { 5149 logd("handleIPv4Success, roaming and address changed" + 5150 mWifiInfo + " got: " + addr); 5151 } 5152 } 5153 mWifiInfo.setInetAddress(addr); 5154 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 5155 updateLinkProperties(reason); 5156 } 5157 5158 private void handleSuccessfulIpConfiguration() { 5159 mLastSignalLevel = -1; // Force update of signal strength 5160 WifiConfiguration c = getCurrentWifiConfiguration(); 5161 if (c != null) { 5162 // Reset IP failure tracking 5163 c.numConnectionFailures = 0; 5164 5165 // Tell the framework whether the newly connected network is trusted or untrusted. 5166 updateCapabilities(c); 5167 } 5168 if (c != null) { 5169 ScanResult result = getCurrentScanResult(); 5170 if (result == null) { 5171 logd("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 5172 c.configKey()); 5173 } else { 5174 // Clear the per BSSID failure count 5175 result.numIpConfigFailures = 0; 5176 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 5177 // any BSSID, even though it may already have a non zero ip failure count, 5178 // this will typically happen if the user walks away and come back to his arrea 5179 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 5180 // in supplicant for a couple of hours or a day 5181 mWifiConfigStore.clearBssidBlacklist(); 5182 } 5183 } 5184 } 5185 5186 private void handleIPv4Failure(int reason) { 5187 synchronized(mDhcpResultsLock) { 5188 if (mDhcpResults != null) { 5189 mDhcpResults.clear(); 5190 } 5191 } 5192 if (PDBG) { 5193 logd("handleIPv4Failure"); 5194 } 5195 updateLinkProperties(reason); 5196 } 5197 5198 private void handleIpConfigurationLost() { 5199 mWifiInfo.setInetAddress(null); 5200 mWifiInfo.setMeteredHint(false); 5201 5202 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 5203 "DHCP FAILURE", mWifiInfo.getBSSID()); 5204 5205 /* DHCP times out after about 30 seconds, we do a 5206 * disconnect thru supplicant, we will let autojoin retry connecting to the network 5207 */ 5208 mWifiNative.disconnect(); 5209 } 5210 5211 // TODO: De-duplicated this and handleIpConfigurationLost(). 5212 private void handleIpReachabilityLost() { 5213 // No need to be told about any additional neighbors that might also 5214 // become unreachable--quiet them now while we start disconnecting. 5215 if (mIpReachabilityMonitor != null) { 5216 mIpReachabilityMonitor.clearLinkProperties(); 5217 } 5218 5219 mWifiInfo.setInetAddress(null); 5220 mWifiInfo.setMeteredHint(false); 5221 5222 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 5223 5224 // Disconnect via supplicant, and let autojoin retry connecting to the network. 5225 mWifiNative.disconnect(); 5226 } 5227 5228 private int convertFrequencyToChannelNumber(int frequency) { 5229 if (frequency >= 2412 && frequency <= 2484) { 5230 return (frequency -2412) / 5 + 1; 5231 } else if (frequency >= 5170 && frequency <=5825) { 5232 //DFS is included 5233 return (frequency -5170) / 5 + 34; 5234 } else { 5235 return 0; 5236 } 5237 } 5238 5239 private int chooseApChannel(int apBand) { 5240 int apChannel; 5241 int[] channel; 5242 5243 if (apBand == 0) { 5244 if (mWifiApConfigStore.allowed2GChannel == null || 5245 mWifiApConfigStore.allowed2GChannel.size() == 0) { 5246 //most safe channel to use 5247 if(DBG) { 5248 Log.d(TAG, "No specified 2G allowed channel list"); 5249 } 5250 apChannel = 6; 5251 } else { 5252 int index = mRandom.nextInt(mWifiApConfigStore.allowed2GChannel.size()); 5253 apChannel = mWifiApConfigStore.allowed2GChannel.get(index).intValue(); 5254 } 5255 } else { 5256 //5G without DFS 5257 channel = mWifiNative.getChannelsForBand(2); 5258 if (channel != null && channel.length > 0) { 5259 apChannel = channel[mRandom.nextInt(channel.length)]; 5260 apChannel = convertFrequencyToChannelNumber(apChannel); 5261 } else { 5262 Log.e(TAG, "SoftAp do not get available channel list"); 5263 apChannel = 0; 5264 } 5265 } 5266 5267 if(DBG) { 5268 Log.d(TAG, "SoftAp set on channel " + apChannel); 5269 } 5270 5271 return apChannel; 5272 } 5273 5274 /* SoftAP configuration */ 5275 private boolean enableSoftAp() { 5276 if (WifiNative.getInterfaces() != 0) { 5277 if (!mWifiNative.toggleInterface(0)) { 5278 if (DBG) Log.e(TAG, "toggleInterface failed"); 5279 return false; 5280 } 5281 } else { 5282 if (DBG) Log.d(TAG, "No interfaces to toggle"); 5283 } 5284 5285 try { 5286 mNwService.wifiFirmwareReload(mInterfaceName, "AP"); 5287 if (DBG) Log.d(TAG, "Firmware reloaded in AP mode"); 5288 } catch (Exception e) { 5289 Log.e(TAG, "Failed to reload AP firmware " + e); 5290 } 5291 5292 if (WifiNative.startHal() == false) { 5293 /* starting HAL is optional */ 5294 Log.e(TAG, "Failed to start HAL"); 5295 } 5296 return true; 5297 } 5298 5299 /* Current design is to not set the config on a running hostapd but instead 5300 * stop and start tethering when user changes config on a running access point 5301 * 5302 * TODO: Add control channel setup through hostapd that allows changing config 5303 * on a running daemon 5304 */ 5305 private void startSoftApWithConfig(final WifiConfiguration configuration) { 5306 // set channel 5307 final WifiConfiguration config = new WifiConfiguration(configuration); 5308 5309 if (DBG) { 5310 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 5311 } 5312 5313 //We need HAL support to set country code and get available channel list, if HAL is 5314 //not available, like razor, we regress to original implementaion (2GHz, channel 6) 5315 if (mWifiNative.isHalStarted()) { 5316 //set country code through HAL Here 5317 String countryCode = getCurrentCountryCode(); 5318 5319 if (countryCode != null) { 5320 if (!mWifiNative.setCountryCodeHal(countryCode.toUpperCase(Locale.ROOT))) { 5321 if (config.apBand != 0) { 5322 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 5323 //countrycode is mandatory for 5GHz 5324 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5325 return; 5326 } 5327 } 5328 } else { 5329 if (config.apBand != 0) { 5330 //countrycode is mandatory for 5GHz 5331 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 5332 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5333 return; 5334 } 5335 } 5336 5337 if (config.apChannel == 0) { 5338 config.apChannel = chooseApChannel(config.apBand); 5339 if (config.apChannel == 0) { 5340 if(mWifiNative.isGetChannelsForBandSupported()) { 5341 //fail to get available channel 5342 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_NO_CHANNEL); 5343 return; 5344 } else { 5345 //for some old device, wifiHal may not be supportedget valid channels are not 5346 //supported 5347 config.apBand = 0; 5348 config.apChannel = 6; 5349 } 5350 } 5351 } 5352 } else { 5353 //for some old device, wifiHal may not be supported 5354 config.apBand = 0; 5355 config.apChannel = 6; 5356 } 5357 // Start hostapd on a separate thread 5358 new Thread(new Runnable() { 5359 public void run() { 5360 try { 5361 mNwService.startAccessPoint(config, mInterfaceName); 5362 } catch (Exception e) { 5363 loge("Exception in softap start " + e); 5364 try { 5365 mNwService.stopAccessPoint(mInterfaceName); 5366 mNwService.startAccessPoint(config, mInterfaceName); 5367 } catch (Exception e1) { 5368 loge("Exception in softap re-start " + e1); 5369 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 5370 return; 5371 } 5372 } 5373 if (DBG) log("Soft AP start successful"); 5374 sendMessage(CMD_START_AP_SUCCESS); 5375 } 5376 }).start(); 5377 } 5378 5379 private byte[] macAddressFromString(String macString) { 5380 String[] macBytes = macString.split(":"); 5381 if (macBytes.length != 6) { 5382 throw new IllegalArgumentException("MAC address should be 6 bytes long!"); 5383 } 5384 byte[] mac = new byte[6]; 5385 for (int i = 0; i < macBytes.length; i++) { 5386 Integer hexVal = Integer.parseInt(macBytes[i], 16); 5387 mac[i] = hexVal.byteValue(); 5388 } 5389 return mac; 5390 } 5391 5392 /* 5393 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5394 * so as to record MAC address of default gateway. 5395 **/ 5396 private String macAddressFromRoute(String ipAddress) { 5397 String macAddress = null; 5398 BufferedReader reader = null; 5399 try { 5400 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5401 5402 // Skip over the line bearing colum titles 5403 String line = reader.readLine(); 5404 5405 while ((line = reader.readLine()) != null) { 5406 String[] tokens = line.split("[ ]+"); 5407 if (tokens.length < 6) { 5408 continue; 5409 } 5410 5411 // ARP column format is 5412 // Address HWType HWAddress Flags Mask IFace 5413 String ip = tokens[0]; 5414 String mac = tokens[3]; 5415 5416 if (ipAddress.equals(ip)) { 5417 macAddress = mac; 5418 break; 5419 } 5420 } 5421 5422 if (macAddress == null) { 5423 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5424 "/proc/net/arp"); 5425 } 5426 5427 } catch (FileNotFoundException e) { 5428 loge("Could not open /proc/net/arp to lookup mac address"); 5429 } catch (IOException e) { 5430 loge("Could not read /proc/net/arp to lookup mac address"); 5431 } finally { 5432 try { 5433 if (reader != null) { 5434 reader.close(); 5435 } 5436 } catch (IOException e) { 5437 // Do nothing 5438 } 5439 } 5440 return macAddress; 5441 5442 } 5443 5444 private class WifiNetworkFactory extends NetworkFactory { 5445 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5446 super(l, c, TAG, f); 5447 } 5448 5449 @Override 5450 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5451 ++mConnectionRequests; 5452 } 5453 5454 @Override 5455 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5456 --mConnectionRequests; 5457 } 5458 5459 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5460 pw.println("mConnectionRequests " + mConnectionRequests); 5461 } 5462 5463 } 5464 5465 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5466 private int mUntrustedReqCount; 5467 5468 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5469 super(l, c, tag, f); 5470 } 5471 5472 @Override 5473 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5474 if (!networkRequest.networkCapabilities.hasCapability( 5475 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5476 if (++mUntrustedReqCount == 1) { 5477 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5478 } 5479 } 5480 } 5481 5482 @Override 5483 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5484 if (!networkRequest.networkCapabilities.hasCapability( 5485 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5486 if (--mUntrustedReqCount == 0) { 5487 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5488 } 5489 } 5490 } 5491 5492 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5493 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5494 } 5495 } 5496 5497 void maybeRegisterNetworkFactory() { 5498 if (mNetworkFactory == null) { 5499 checkAndSetConnectivityInstance(); 5500 if (mCm != null) { 5501 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5502 NETWORKTYPE, mNetworkCapabilitiesFilter); 5503 mNetworkFactory.setScoreFilter(60); 5504 mNetworkFactory.register(); 5505 5506 // We can't filter untrusted network in the capabilities filter because a trusted 5507 // network would still satisfy a request that accepts untrusted ones. 5508 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5509 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5510 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5511 mUntrustedNetworkFactory.register(); 5512 } 5513 } 5514 } 5515 5516 /******************************************************** 5517 * HSM states 5518 *******************************************************/ 5519 5520 class DefaultState extends State { 5521 @Override 5522 public boolean processMessage(Message message) { 5523 logStateAndMessage(message, this); 5524 5525 switch (message.what) { 5526 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5527 AsyncChannel ac = (AsyncChannel) message.obj; 5528 if (ac == mWifiP2pChannel) { 5529 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5530 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5531 } else { 5532 loge("WifiP2pService connection failure, error=" + message.arg1); 5533 } 5534 } else { 5535 loge("got HALF_CONNECTED for unknown channel"); 5536 } 5537 break; 5538 } 5539 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5540 AsyncChannel ac = (AsyncChannel) message.obj; 5541 if (ac == mWifiP2pChannel) { 5542 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5543 //TODO: Re-establish connection to state machine after a delay 5544 // mWifiP2pChannel.connect(mContext, getHandler(), 5545 // mWifiP2pManager.getMessenger()); 5546 } 5547 break; 5548 } 5549 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5550 mBluetoothConnectionActive = (message.arg1 != 5551 BluetoothAdapter.STATE_DISCONNECTED); 5552 break; 5553 /* Synchronous call returns */ 5554 case CMD_PING_SUPPLICANT: 5555 case CMD_ENABLE_NETWORK: 5556 case CMD_ADD_OR_UPDATE_NETWORK: 5557 case CMD_REMOVE_NETWORK: 5558 case CMD_SAVE_CONFIG: 5559 replyToMessage(message, message.what, FAILURE); 5560 break; 5561 case CMD_GET_CAPABILITY_FREQ: 5562 replyToMessage(message, message.what, null); 5563 break; 5564 case CMD_GET_CONFIGURED_NETWORKS: 5565 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5566 break; 5567 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5568 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5569 break; 5570 case CMD_ENABLE_RSSI_POLL: 5571 mEnableRssiPolling = (message.arg1 == 1); 5572 break; 5573 case CMD_SET_HIGH_PERF_MODE: 5574 if (message.arg1 == 1) { 5575 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5576 } else { 5577 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5578 } 5579 break; 5580 case CMD_BOOT_COMPLETED: 5581 maybeRegisterNetworkFactory(); 5582 break; 5583 case CMD_SCREEN_STATE_CHANGED: 5584 handleScreenStateChanged(message.arg1 != 0); 5585 break; 5586 /* Discard */ 5587 case CMD_START_SCAN: 5588 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5589 break; 5590 case CMD_START_SUPPLICANT: 5591 case CMD_STOP_SUPPLICANT: 5592 case CMD_STOP_SUPPLICANT_FAILED: 5593 case CMD_START_DRIVER: 5594 case CMD_STOP_DRIVER: 5595 case CMD_DELAYED_STOP_DRIVER: 5596 case CMD_DRIVER_START_TIMED_OUT: 5597 case CMD_START_AP: 5598 case CMD_START_AP_SUCCESS: 5599 case CMD_START_AP_FAILURE: 5600 case CMD_STOP_AP: 5601 case CMD_TETHER_STATE_CHANGE: 5602 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5603 case CMD_DISCONNECT: 5604 case CMD_RECONNECT: 5605 case CMD_REASSOCIATE: 5606 case CMD_RELOAD_TLS_AND_RECONNECT: 5607 case WifiMonitor.SUP_CONNECTION_EVENT: 5608 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5609 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5610 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5611 case WifiMonitor.SCAN_RESULTS_EVENT: 5612 case WifiMonitor.SCAN_FAILED_EVENT: 5613 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5614 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5615 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5616 case WifiMonitor.WPS_OVERLAP_EVENT: 5617 case CMD_BLACKLIST_NETWORK: 5618 case CMD_CLEAR_BLACKLIST: 5619 case CMD_SET_OPERATIONAL_MODE: 5620 case CMD_SET_FREQUENCY_BAND: 5621 case CMD_RSSI_POLL: 5622 case CMD_ENABLE_ALL_NETWORKS: 5623 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5624 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5625 /* Handled by WifiApConfigStore */ 5626 case CMD_SET_AP_CONFIG: 5627 case CMD_SET_AP_CONFIG_COMPLETED: 5628 case CMD_REQUEST_AP_CONFIG: 5629 case CMD_RESPONSE_AP_CONFIG: 5630 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5631 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5632 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5633 case CMD_DISABLE_P2P_RSP: 5634 case WifiMonitor.SUP_REQUEST_IDENTITY: 5635 case CMD_TEST_NETWORK_DISCONNECT: 5636 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5637 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5638 case CMD_TARGET_BSSID: 5639 case CMD_AUTO_CONNECT: 5640 case CMD_AUTO_ROAM: 5641 case CMD_AUTO_SAVE_NETWORK: 5642 case CMD_ASSOCIATED_BSSID: 5643 case CMD_UNWANTED_NETWORK: 5644 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5645 case CMD_ROAM_WATCHDOG_TIMER: 5646 case CMD_DISABLE_EPHEMERAL_NETWORK: 5647 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5648 case CMD_STARTED_PNO_DBG: 5649 case CMD_STARTED_GSCAN_DBG: 5650 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5651 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5652 break; 5653 case CMD_SET_COUNTRY_CODE: 5654 String country = (String) message.obj; 5655 final boolean persist = (message.arg2 == 1); 5656 final int sequence = message.arg1; 5657 if (sequence != mCountryCodeSequence.get()) { 5658 if (DBG) log("set country code ignored due to sequnce num"); 5659 break; 5660 } 5661 5662 if (persist) { 5663 country = country.toUpperCase(Locale.ROOT); 5664 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 5665 Settings.Global.putString(mContext.getContentResolver(), 5666 Settings.Global.WIFI_COUNTRY_CODE, 5667 country == null ? "" : country); 5668 } 5669 5670 break; 5671 case DhcpStateMachine.CMD_ON_QUIT: 5672 mDhcpStateMachine = null; 5673 break; 5674 case CMD_SET_SUSPEND_OPT_ENABLED: 5675 if (message.arg1 == 1) { 5676 mSuspendWakeLock.release(); 5677 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5678 } else { 5679 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5680 } 5681 break; 5682 case WifiMonitor.DRIVER_HUNG_EVENT: 5683 setSupplicantRunning(false); 5684 setSupplicantRunning(true); 5685 break; 5686 case WifiManager.CONNECT_NETWORK: 5687 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5688 WifiManager.BUSY); 5689 break; 5690 case WifiManager.FORGET_NETWORK: 5691 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5692 WifiManager.BUSY); 5693 break; 5694 case WifiManager.SAVE_NETWORK: 5695 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5696 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5697 WifiManager.BUSY); 5698 break; 5699 case WifiManager.START_WPS: 5700 replyToMessage(message, WifiManager.WPS_FAILED, 5701 WifiManager.BUSY); 5702 break; 5703 case WifiManager.CANCEL_WPS: 5704 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5705 WifiManager.BUSY); 5706 break; 5707 case WifiManager.DISABLE_NETWORK: 5708 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5709 WifiManager.BUSY); 5710 break; 5711 case WifiManager.RSSI_PKTCNT_FETCH: 5712 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5713 WifiManager.BUSY); 5714 break; 5715 case CMD_GET_SUPPORTED_FEATURES: 5716 int featureSet = WifiNative.getSupportedFeatureSet(); 5717 replyToMessage(message, message.what, featureSet); 5718 break; 5719 case CMD_FIRMWARE_ALERT: 5720 if (mWifiLogger != null) { 5721 byte[] buffer = (byte[])message.obj; 5722 mWifiLogger.captureAlertData(message.arg1, buffer); 5723 } 5724 break; 5725 case CMD_GET_LINK_LAYER_STATS: 5726 // Not supported hence reply with error message 5727 replyToMessage(message, message.what, null); 5728 break; 5729 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5730 NetworkInfo info = (NetworkInfo) message.obj; 5731 mP2pConnected.set(info.isConnected()); 5732 break; 5733 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5734 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5735 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5736 break; 5737 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5738 case CMD_UPDATE_LINKPROPERTIES: 5739 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5740 break; 5741 case CMD_GET_MATCHING_CONFIG: 5742 replyToMessage(message, message.what); 5743 break; 5744 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5745 case CMD_IP_CONFIGURATION_LOST: 5746 case CMD_IP_REACHABILITY_LOST: 5747 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5748 break; 5749 case CMD_GET_CONNECTION_STATISTICS: 5750 replyToMessage(message, message.what, mWifiConnectionStatistics); 5751 break; 5752 case CMD_REMOVE_APP_CONFIGURATIONS: 5753 deferMessage(message); 5754 break; 5755 case CMD_REMOVE_USER_CONFIGURATIONS: 5756 deferMessage(message); 5757 break; 5758 case CMD_START_IP_PACKET_OFFLOAD: 5759 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5760 message.arg1, 5761 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5762 break; 5763 case CMD_STOP_IP_PACKET_OFFLOAD: 5764 if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent( 5765 message.arg1, 5766 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 5767 break; 5768 case CMD_START_RSSI_MONITORING_OFFLOAD: 5769 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5770 break; 5771 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 5772 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5773 break; 5774 default: 5775 loge("Error! unhandled message" + message); 5776 break; 5777 } 5778 return HANDLED; 5779 } 5780 } 5781 5782 class InitialState extends State { 5783 @Override 5784 public void enter() { 5785 WifiNative.stopHal(); 5786 mWifiNative.unloadDriver(); 5787 if (mWifiP2pChannel == null) { 5788 mWifiP2pChannel = new AsyncChannel(); 5789 mWifiP2pChannel.connect(mContext, getHandler(), 5790 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5791 } 5792 5793 if (mWifiApConfigChannel == null) { 5794 mWifiApConfigChannel = new AsyncChannel(); 5795 mWifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5796 mContext, getHandler()); 5797 mWifiApConfigStore.loadApConfiguration(); 5798 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5799 mWifiApConfigStore.getMessenger()); 5800 } 5801 5802 if (mWifiConfigStore.enableHalBasedPno.get()) { 5803 // make sure developer Settings are in sync with the config option 5804 mHalBasedPnoEnableInDevSettings = true; 5805 } 5806 } 5807 @Override 5808 public boolean processMessage(Message message) { 5809 logStateAndMessage(message, this); 5810 switch (message.what) { 5811 case CMD_START_SUPPLICANT: 5812 if (mWifiNative.loadDriver()) { 5813 try { 5814 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5815 } catch (Exception e) { 5816 loge("Failed to reload STA firmware " + e); 5817 // Continue 5818 } 5819 5820 try { 5821 // A runtime crash can leave the interface up and 5822 // IP addresses configured, and this affects 5823 // connectivity when supplicant starts up. 5824 // Ensure interface is down and we have no IP 5825 // addresses before a supplicant start. 5826 mNwService.setInterfaceDown(mInterfaceName); 5827 mNwService.clearInterfaceAddresses(mInterfaceName); 5828 5829 // Set privacy extensions 5830 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5831 5832 // IPv6 is enabled only as long as access point is connected since: 5833 // - IPv6 addresses and routes stick around after disconnection 5834 // - kernel is unaware when connected and fails to start IPv6 negotiation 5835 // - kernel can start autoconfiguration when 802.1x is not complete 5836 mNwService.disableIpv6(mInterfaceName); 5837 } catch (RemoteException re) { 5838 loge("Unable to change interface settings: " + re); 5839 } catch (IllegalStateException ie) { 5840 loge("Unable to change interface settings: " + ie); 5841 } 5842 5843 /* Stop a running supplicant after a runtime restart 5844 * Avoids issues with drivers that do not handle interface down 5845 * on a running supplicant properly. 5846 */ 5847 mWifiMonitor.killSupplicant(mP2pSupported); 5848 5849 if (WifiNative.startHal() == false) { 5850 /* starting HAL is optional */ 5851 loge("Failed to start HAL"); 5852 } 5853 5854 if (mWifiNative.startSupplicant(mP2pSupported)) { 5855 setWifiState(WIFI_STATE_ENABLING); 5856 if (DBG) log("Supplicant start successful"); 5857 mWifiMonitor.startMonitoring(); 5858 transitionTo(mSupplicantStartingState); 5859 } else { 5860 loge("Failed to start supplicant!"); 5861 } 5862 } else { 5863 loge("Failed to load driver"); 5864 } 5865 break; 5866 case CMD_START_AP: 5867 if (mWifiNative.loadDriver() == false) { 5868 loge("Failed to load driver for softap"); 5869 } else { 5870 if (enableSoftAp() == true) { 5871 setWifiApState(WIFI_AP_STATE_ENABLING, 0); 5872 transitionTo(mSoftApStartingState); 5873 } else { 5874 setWifiApState(WIFI_AP_STATE_FAILED, 5875 WifiManager.SAP_START_FAILURE_GENERAL); 5876 transitionTo(mInitialState); 5877 } 5878 } 5879 break; 5880 default: 5881 return NOT_HANDLED; 5882 } 5883 return HANDLED; 5884 } 5885 } 5886 5887 class SupplicantStartingState extends State { 5888 private void initializeWpsDetails() { 5889 String detail; 5890 detail = SystemProperties.get("ro.product.name", ""); 5891 if (!mWifiNative.setDeviceName(detail)) { 5892 loge("Failed to set device name " + detail); 5893 } 5894 detail = SystemProperties.get("ro.product.manufacturer", ""); 5895 if (!mWifiNative.setManufacturer(detail)) { 5896 loge("Failed to set manufacturer " + detail); 5897 } 5898 detail = SystemProperties.get("ro.product.model", ""); 5899 if (!mWifiNative.setModelName(detail)) { 5900 loge("Failed to set model name " + detail); 5901 } 5902 detail = SystemProperties.get("ro.product.model", ""); 5903 if (!mWifiNative.setModelNumber(detail)) { 5904 loge("Failed to set model number " + detail); 5905 } 5906 detail = SystemProperties.get("ro.serialno", ""); 5907 if (!mWifiNative.setSerialNumber(detail)) { 5908 loge("Failed to set serial number " + detail); 5909 } 5910 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5911 loge("Failed to set WPS config methods"); 5912 } 5913 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5914 loge("Failed to set primary device type " + mPrimaryDeviceType); 5915 } 5916 } 5917 5918 @Override 5919 public boolean processMessage(Message message) { 5920 logStateAndMessage(message, this); 5921 5922 switch(message.what) { 5923 case WifiMonitor.SUP_CONNECTION_EVENT: 5924 if (DBG) log("Supplicant connection established"); 5925 setWifiState(WIFI_STATE_ENABLED); 5926 mSupplicantRestartCount = 0; 5927 /* Reset the supplicant state to indicate the supplicant 5928 * state is not known at this time */ 5929 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5930 /* Initialize data structures */ 5931 mLastBssid = null; 5932 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5933 mLastSignalLevel = -1; 5934 5935 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5936 /* set frequency band of operation */ 5937 setFrequencyBand(); 5938 mWifiNative.enableSaveConfig(); 5939 mWifiConfigStore.loadAndEnableAllNetworks(); 5940 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5941 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5942 } 5943 initializeWpsDetails(); 5944 5945 sendSupplicantConnectionChangedBroadcast(true); 5946 transitionTo(mDriverStartedState); 5947 break; 5948 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5949 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5950 loge("Failed to setup control channel, restart supplicant"); 5951 mWifiMonitor.killSupplicant(mP2pSupported); 5952 transitionTo(mInitialState); 5953 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5954 } else { 5955 loge("Failed " + mSupplicantRestartCount + 5956 " times to start supplicant, unload driver"); 5957 mSupplicantRestartCount = 0; 5958 setWifiState(WIFI_STATE_UNKNOWN); 5959 transitionTo(mInitialState); 5960 } 5961 break; 5962 case CMD_START_SUPPLICANT: 5963 case CMD_STOP_SUPPLICANT: 5964 case CMD_START_AP: 5965 case CMD_STOP_AP: 5966 case CMD_START_DRIVER: 5967 case CMD_STOP_DRIVER: 5968 case CMD_SET_OPERATIONAL_MODE: 5969 case CMD_SET_COUNTRY_CODE: 5970 case CMD_SET_FREQUENCY_BAND: 5971 case CMD_START_PACKET_FILTERING: 5972 case CMD_STOP_PACKET_FILTERING: 5973 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5974 deferMessage(message); 5975 break; 5976 default: 5977 return NOT_HANDLED; 5978 } 5979 return HANDLED; 5980 } 5981 } 5982 5983 class SupplicantStartedState extends State { 5984 @Override 5985 public void enter() { 5986 /* Wifi is available as long as we have a connection to supplicant */ 5987 mNetworkInfo.setIsAvailable(true); 5988 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5989 5990 int defaultInterval = mContext.getResources().getInteger( 5991 R.integer.config_wifi_supplicant_scan_interval); 5992 5993 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5994 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5995 defaultInterval); 5996 5997 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5998 mWifiNative.setExternalSim(true); 5999 6000 /* turn on use of DFS channels */ 6001 WifiNative.setDfsFlag(true); 6002 6003 /* set country code */ 6004 initializeCountryCode(); 6005 6006 setRandomMacOui(); 6007 mWifiNative.enableAutoConnect(false); 6008 } 6009 6010 @Override 6011 public boolean processMessage(Message message) { 6012 logStateAndMessage(message, this); 6013 6014 switch(message.what) { 6015 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 6016 if (mP2pSupported) { 6017 transitionTo(mWaitForP2pDisableState); 6018 } else { 6019 transitionTo(mSupplicantStoppingState); 6020 } 6021 break; 6022 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 6023 loge("Connection lost, restart supplicant"); 6024 handleSupplicantConnectionLoss(true); 6025 handleNetworkDisconnect(); 6026 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6027 if (mP2pSupported) { 6028 transitionTo(mWaitForP2pDisableState); 6029 } else { 6030 transitionTo(mInitialState); 6031 } 6032 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 6033 break; 6034 case WifiMonitor.SCAN_RESULTS_EVENT: 6035 case WifiMonitor.SCAN_FAILED_EVENT: 6036 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 6037 noteScanEnd(); 6038 setScanResults(); 6039 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 6040 /* Just updated results from full scan, let apps know about this */ 6041 boolean scanSucceeded = message.what == WifiMonitor.SCAN_RESULTS_EVENT; 6042 sendScanResultsAvailableBroadcast(scanSucceeded); 6043 } 6044 mSendScanResultsBroadcast = false; 6045 mIsScanOngoing = false; 6046 mIsFullScanOngoing = false; 6047 if (mBufferedScanMsg.size() > 0) 6048 sendMessage(mBufferedScanMsg.remove()); 6049 break; 6050 case CMD_PING_SUPPLICANT: 6051 boolean ok = mWifiNative.ping(); 6052 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6053 break; 6054 case CMD_GET_CAPABILITY_FREQ: 6055 String freqs = mWifiNative.getFreqCapability(); 6056 replyToMessage(message, message.what, freqs); 6057 break; 6058 case CMD_START_AP: 6059 /* Cannot start soft AP while in client mode */ 6060 loge("Failed to start soft AP with a running supplicant"); 6061 setWifiApState(WIFI_AP_STATE_FAILED, WifiManager.SAP_START_FAILURE_GENERAL); 6062 break; 6063 case CMD_SET_OPERATIONAL_MODE: 6064 mOperationalMode = message.arg1; 6065 mWifiConfigStore. 6066 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6067 break; 6068 case CMD_TARGET_BSSID: 6069 // Trying to associate to this BSSID 6070 if (message.obj != null) { 6071 mTargetRoamBSSID = (String) message.obj; 6072 } 6073 break; 6074 case CMD_GET_LINK_LAYER_STATS: 6075 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 6076 if (stats == null) { 6077 // When firmware doesnt support link layer stats, return an empty object 6078 stats = new WifiLinkLayerStats(); 6079 } 6080 replyToMessage(message, message.what, stats); 6081 break; 6082 case CMD_SET_COUNTRY_CODE: 6083 String country = (String) message.obj; 6084 final boolean persist = (message.arg2 == 1); 6085 final int sequence = message.arg1; 6086 if (sequence != mCountryCodeSequence.get()) { 6087 if (DBG) log("set country code ignored due to sequnce num"); 6088 break; 6089 } 6090 6091 country = country.toUpperCase(Locale.ROOT); 6092 6093 if (DBG) log("set country code " + (country == null ? "(null)" : country)); 6094 6095 if (!TextUtils.equals(mDriverSetCountryCode, country)) { 6096 if (mWifiNative.setCountryCode(country)) { 6097 mDriverSetCountryCode = country; 6098 } else { 6099 loge("Failed to set country code " + country); 6100 } 6101 } 6102 6103 if (persist) { 6104 Settings.Global.putString(mContext.getContentResolver(), 6105 Settings.Global.WIFI_COUNTRY_CODE, 6106 country == null ? "" : country); 6107 } 6108 6109 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 6110 break; 6111 case CMD_RESET_SIM_NETWORKS: 6112 log("resetting EAP-SIM/AKA/AKA' networks since SIM was removed"); 6113 mWifiConfigStore.resetSimNetworks(); 6114 break; 6115 default: 6116 return NOT_HANDLED; 6117 } 6118 return HANDLED; 6119 } 6120 6121 @Override 6122 public void exit() { 6123 mNetworkInfo.setIsAvailable(false); 6124 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 6125 } 6126 } 6127 6128 class SupplicantStoppingState extends State { 6129 @Override 6130 public void enter() { 6131 /* Send any reset commands to supplicant before shutting it down */ 6132 handleNetworkDisconnect(); 6133 if (mDhcpStateMachine != null) { 6134 mDhcpStateMachine.doQuit(); 6135 } 6136 6137 String suppState = System.getProperty("init.svc.wpa_supplicant"); 6138 if (suppState == null) suppState = "unknown"; 6139 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 6140 if (p2pSuppState == null) p2pSuppState = "unknown"; 6141 6142 logd("SupplicantStoppingState: stopSupplicant " 6143 + " init.svc.wpa_supplicant=" + suppState 6144 + " init.svc.p2p_supplicant=" + p2pSuppState); 6145 mWifiMonitor.stopSupplicant(); 6146 6147 /* Send ourselves a delayed message to indicate failure after a wait time */ 6148 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 6149 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 6150 setWifiState(WIFI_STATE_DISABLING); 6151 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 6152 } 6153 @Override 6154 public boolean processMessage(Message message) { 6155 logStateAndMessage(message, this); 6156 6157 switch(message.what) { 6158 case WifiMonitor.SUP_CONNECTION_EVENT: 6159 loge("Supplicant connection received while stopping"); 6160 break; 6161 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6162 if (DBG) log("Supplicant connection lost"); 6163 handleSupplicantConnectionLoss(false); 6164 transitionTo(mInitialState); 6165 break; 6166 case CMD_STOP_SUPPLICANT_FAILED: 6167 if (message.arg1 == mSupplicantStopFailureToken) { 6168 loge("Timed out on a supplicant stop, kill and proceed"); 6169 handleSupplicantConnectionLoss(true); 6170 transitionTo(mInitialState); 6171 } 6172 break; 6173 case CMD_START_SUPPLICANT: 6174 case CMD_STOP_SUPPLICANT: 6175 case CMD_START_AP: 6176 case CMD_STOP_AP: 6177 case CMD_START_DRIVER: 6178 case CMD_STOP_DRIVER: 6179 case CMD_SET_OPERATIONAL_MODE: 6180 case CMD_SET_COUNTRY_CODE: 6181 case CMD_SET_FREQUENCY_BAND: 6182 case CMD_START_PACKET_FILTERING: 6183 case CMD_STOP_PACKET_FILTERING: 6184 deferMessage(message); 6185 break; 6186 default: 6187 return NOT_HANDLED; 6188 } 6189 return HANDLED; 6190 } 6191 } 6192 6193 class DriverStartingState extends State { 6194 private int mTries; 6195 @Override 6196 public void enter() { 6197 mTries = 1; 6198 /* Send ourselves a delayed message to start driver a second time */ 6199 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6200 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6201 } 6202 @Override 6203 public boolean processMessage(Message message) { 6204 logStateAndMessage(message, this); 6205 6206 switch(message.what) { 6207 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6208 SupplicantState state = handleSupplicantStateChange(message); 6209 /* If suplicant is exiting out of INTERFACE_DISABLED state into 6210 * a state that indicates driver has started, it is ready to 6211 * receive driver commands 6212 */ 6213 if (SupplicantState.isDriverActive(state)) { 6214 transitionTo(mDriverStartedState); 6215 } 6216 break; 6217 case CMD_DRIVER_START_TIMED_OUT: 6218 if (message.arg1 == mDriverStartToken) { 6219 if (mTries >= 2) { 6220 loge("Failed to start driver after " + mTries); 6221 transitionTo(mDriverStoppedState); 6222 } else { 6223 loge("Driver start failed, retrying"); 6224 mWakeLock.acquire(); 6225 mWifiNative.startDriver(); 6226 mWakeLock.release(); 6227 6228 ++mTries; 6229 /* Send ourselves a delayed message to start driver again */ 6230 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 6231 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 6232 } 6233 } 6234 break; 6235 /* Queue driver commands & connection events */ 6236 case CMD_START_DRIVER: 6237 case CMD_STOP_DRIVER: 6238 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6239 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6240 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6241 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6242 case WifiMonitor.WPS_OVERLAP_EVENT: 6243 case CMD_SET_COUNTRY_CODE: 6244 case CMD_SET_FREQUENCY_BAND: 6245 case CMD_START_PACKET_FILTERING: 6246 case CMD_STOP_PACKET_FILTERING: 6247 case CMD_START_SCAN: 6248 case CMD_DISCONNECT: 6249 case CMD_REASSOCIATE: 6250 case CMD_RECONNECT: 6251 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6252 deferMessage(message); 6253 break; 6254 case WifiMonitor.SCAN_RESULTS_EVENT: 6255 case WifiMonitor.SCAN_FAILED_EVENT: 6256 // Loose scan results obtained in Driver Starting state, they can only confuse 6257 // the state machine 6258 break; 6259 default: 6260 return NOT_HANDLED; 6261 } 6262 return HANDLED; 6263 } 6264 } 6265 6266 class DriverStartedState extends State { 6267 @Override 6268 public void enter() { 6269 6270 if (PDBG) { 6271 logd("DriverStartedState enter"); 6272 } 6273 6274 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 6275 mIsRunning = true; 6276 mInDelayedStop = false; 6277 mDelayedStopCounter++; 6278 updateBatteryWorkSource(null); 6279 /** 6280 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 6281 * When this mode is on, some of the low-level scan parameters used by the 6282 * driver are changed to reduce interference with bluetooth 6283 */ 6284 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6285 /* initialize network state */ 6286 setNetworkDetailedState(DetailedState.DISCONNECTED); 6287 6288 /* Remove any filtering on Multicast v6 at start */ 6289 mWifiNative.stopFilteringMulticastV6Packets(); 6290 6291 /* Reset Multicast v4 filtering state */ 6292 if (mFilteringMulticastV4Packets.get()) { 6293 mWifiNative.startFilteringMulticastV4Packets(); 6294 } else { 6295 mWifiNative.stopFilteringMulticastV4Packets(); 6296 } 6297 6298 mDhcpActive = false; 6299 6300 if (mOperationalMode != CONNECT_MODE) { 6301 mWifiNative.disconnect(); 6302 mWifiConfigStore.disableAllNetworks(); 6303 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6304 setWifiState(WIFI_STATE_DISABLED); 6305 } 6306 transitionTo(mScanModeState); 6307 } else { 6308 6309 // Status pulls in the current supplicant state and network connection state 6310 // events over the monitor connection. This helps framework sync up with 6311 // current supplicant state 6312 // TODO: actually check th supplicant status string and make sure the supplicant 6313 // is in disconnecte4d state. 6314 mWifiNative.status(); 6315 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 6316 transitionTo(mDisconnectedState); 6317 transitionTo(mDisconnectedState); 6318 } 6319 6320 // We may have missed screen update at boot 6321 if (mScreenBroadcastReceived.get() == false) { 6322 PowerManager powerManager = (PowerManager)mContext.getSystemService( 6323 Context.POWER_SERVICE); 6324 handleScreenStateChanged(powerManager.isScreenOn()); 6325 } else { 6326 // Set the right suspend mode settings 6327 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 6328 && mUserWantsSuspendOpt.get()); 6329 } 6330 mWifiNative.setPowerSave(true); 6331 6332 if (mP2pSupported) { 6333 if (mOperationalMode == CONNECT_MODE) { 6334 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 6335 } else { 6336 // P2P statemachine starts in disabled state, and is not enabled until 6337 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 6338 // keep it disabled. 6339 } 6340 } 6341 6342 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6343 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6344 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 6345 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6346 6347 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 6348 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 6349 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 6350 mHalBasedPnoDriverSupported = true; 6351 } 6352 6353 // Enable link layer stats gathering 6354 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 6355 6356 if (PDBG) { 6357 logd("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 6358 + " feature=" + mHalFeatureSet); 6359 } 6360 } 6361 6362 @Override 6363 public boolean processMessage(Message message) { 6364 logStateAndMessage(message, this); 6365 6366 switch(message.what) { 6367 case CMD_START_SCAN: 6368 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6369 break; 6370 case CMD_SET_FREQUENCY_BAND: 6371 int band = message.arg1; 6372 if (DBG) log("set frequency band " + band); 6373 if (mWifiNative.setBand(band)) { 6374 6375 if (PDBG) logd("did set frequency band " + band); 6376 6377 mFrequencyBand.set(band); 6378 // Flush old data - like scan results 6379 mWifiNative.bssFlush(); 6380 // Fetch the latest scan results when frequency band is set 6381// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6382 6383 if (PDBG) logd("done set frequency band " + band); 6384 6385 } else { 6386 loge("Failed to set frequency band " + band); 6387 } 6388 break; 6389 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6390 mBluetoothConnectionActive = (message.arg1 != 6391 BluetoothAdapter.STATE_DISCONNECTED); 6392 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 6393 break; 6394 case CMD_STOP_DRIVER: 6395 int mode = message.arg1; 6396 6397 /* Already doing a delayed stop */ 6398 if (mInDelayedStop) { 6399 if (DBG) log("Already in delayed stop"); 6400 break; 6401 } 6402 /* disconnect right now, but leave the driver running for a bit */ 6403 mWifiConfigStore.disableAllNetworks(); 6404 6405 mInDelayedStop = true; 6406 mDelayedStopCounter++; 6407 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 6408 6409 /* send regular delayed shut down */ 6410 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 6411 driverStopIntent.setPackage("android"); 6412 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 6413 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 6414 DRIVER_STOP_REQUEST, driverStopIntent, 6415 PendingIntent.FLAG_UPDATE_CURRENT); 6416 6417 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 6418 + mDriverStopDelayMs, mDriverStopIntent); 6419 break; 6420 case CMD_START_DRIVER: 6421 if (mInDelayedStop) { 6422 mInDelayedStop = false; 6423 mDelayedStopCounter++; 6424 mAlarmManager.cancel(mDriverStopIntent); 6425 if (DBG) log("Delayed stop ignored due to start"); 6426 if (mOperationalMode == CONNECT_MODE) { 6427 mWifiConfigStore.enableAllNetworks(); 6428 } 6429 } 6430 break; 6431 case CMD_DELAYED_STOP_DRIVER: 6432 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6433 if (message.arg1 != mDelayedStopCounter) break; 6434 if (getCurrentState() != mDisconnectedState) { 6435 mWifiNative.disconnect(); 6436 handleNetworkDisconnect(); 6437 } 6438 mWakeLock.acquire(); 6439 mWifiNative.stopDriver(); 6440 mWakeLock.release(); 6441 if (mP2pSupported) { 6442 transitionTo(mWaitForP2pDisableState); 6443 } else { 6444 transitionTo(mDriverStoppingState); 6445 } 6446 break; 6447 case CMD_START_PACKET_FILTERING: 6448 if (message.arg1 == MULTICAST_V6) { 6449 mWifiNative.startFilteringMulticastV6Packets(); 6450 } else if (message.arg1 == MULTICAST_V4) { 6451 mWifiNative.startFilteringMulticastV4Packets(); 6452 } else { 6453 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6454 } 6455 break; 6456 case CMD_STOP_PACKET_FILTERING: 6457 if (message.arg1 == MULTICAST_V6) { 6458 mWifiNative.stopFilteringMulticastV6Packets(); 6459 } else if (message.arg1 == MULTICAST_V4) { 6460 mWifiNative.stopFilteringMulticastV4Packets(); 6461 } else { 6462 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6463 } 6464 break; 6465 case CMD_SET_SUSPEND_OPT_ENABLED: 6466 if (message.arg1 == 1) { 6467 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6468 mSuspendWakeLock.release(); 6469 } else { 6470 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6471 } 6472 break; 6473 case CMD_SET_HIGH_PERF_MODE: 6474 if (message.arg1 == 1) { 6475 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6476 } else { 6477 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6478 } 6479 break; 6480 case CMD_ENABLE_TDLS: 6481 if (message.obj != null) { 6482 String remoteAddress = (String) message.obj; 6483 boolean enable = (message.arg1 == 1); 6484 mWifiNative.startTdls(remoteAddress, enable); 6485 } 6486 break; 6487 case WifiMonitor.ANQP_DONE_EVENT: 6488 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6489 break; 6490 case CMD_STOP_IP_PACKET_OFFLOAD: { 6491 int slot = message.arg1; 6492 int ret = stopWifiIPPacketOffload(slot); 6493 if (mNetworkAgent != null) { 6494 mNetworkAgent.onPacketKeepaliveEvent(slot, ret); 6495 } 6496 break; 6497 } 6498 default: 6499 return NOT_HANDLED; 6500 } 6501 return HANDLED; 6502 } 6503 @Override 6504 public void exit() { 6505 6506 mWifiLogger.stopLogging(); 6507 6508 mIsRunning = false; 6509 updateBatteryWorkSource(null); 6510 mScanResults = new ArrayList<>(); 6511 6512 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6513 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6514 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6515 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6516 noteScanEnd(); // wrap up any pending request. 6517 mBufferedScanMsg.clear(); 6518 } 6519 } 6520 6521 class WaitForP2pDisableState extends State { 6522 private State mTransitionToState; 6523 @Override 6524 public void enter() { 6525 switch (getCurrentMessage().what) { 6526 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6527 mTransitionToState = mInitialState; 6528 break; 6529 case CMD_DELAYED_STOP_DRIVER: 6530 mTransitionToState = mDriverStoppingState; 6531 break; 6532 case CMD_STOP_SUPPLICANT: 6533 mTransitionToState = mSupplicantStoppingState; 6534 break; 6535 default: 6536 mTransitionToState = mDriverStoppingState; 6537 break; 6538 } 6539 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6540 } 6541 @Override 6542 public boolean processMessage(Message message) { 6543 logStateAndMessage(message, this); 6544 6545 switch(message.what) { 6546 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6547 transitionTo(mTransitionToState); 6548 break; 6549 /* Defer wifi start/shut and driver commands */ 6550 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6551 case CMD_START_SUPPLICANT: 6552 case CMD_STOP_SUPPLICANT: 6553 case CMD_START_AP: 6554 case CMD_STOP_AP: 6555 case CMD_START_DRIVER: 6556 case CMD_STOP_DRIVER: 6557 case CMD_SET_OPERATIONAL_MODE: 6558 case CMD_SET_COUNTRY_CODE: 6559 case CMD_SET_FREQUENCY_BAND: 6560 case CMD_START_PACKET_FILTERING: 6561 case CMD_STOP_PACKET_FILTERING: 6562 case CMD_START_SCAN: 6563 case CMD_DISCONNECT: 6564 case CMD_REASSOCIATE: 6565 case CMD_RECONNECT: 6566 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6567 deferMessage(message); 6568 break; 6569 default: 6570 return NOT_HANDLED; 6571 } 6572 return HANDLED; 6573 } 6574 } 6575 6576 class DriverStoppingState extends State { 6577 @Override 6578 public boolean processMessage(Message message) { 6579 logStateAndMessage(message, this); 6580 6581 switch(message.what) { 6582 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6583 SupplicantState state = handleSupplicantStateChange(message); 6584 if (state == SupplicantState.INTERFACE_DISABLED) { 6585 transitionTo(mDriverStoppedState); 6586 } 6587 break; 6588 /* Queue driver commands */ 6589 case CMD_START_DRIVER: 6590 case CMD_STOP_DRIVER: 6591 case CMD_SET_COUNTRY_CODE: 6592 case CMD_SET_FREQUENCY_BAND: 6593 case CMD_START_PACKET_FILTERING: 6594 case CMD_STOP_PACKET_FILTERING: 6595 case CMD_START_SCAN: 6596 case CMD_DISCONNECT: 6597 case CMD_REASSOCIATE: 6598 case CMD_RECONNECT: 6599 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6600 deferMessage(message); 6601 break; 6602 default: 6603 return NOT_HANDLED; 6604 } 6605 return HANDLED; 6606 } 6607 } 6608 6609 class DriverStoppedState extends State { 6610 @Override 6611 public boolean processMessage(Message message) { 6612 logStateAndMessage(message, this); 6613 switch (message.what) { 6614 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6615 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6616 SupplicantState state = stateChangeResult.state; 6617 // A WEXT bug means that we can be back to driver started state 6618 // unexpectedly 6619 if (SupplicantState.isDriverActive(state)) { 6620 transitionTo(mDriverStartedState); 6621 } 6622 break; 6623 case CMD_START_DRIVER: 6624 mWakeLock.acquire(); 6625 mWifiNative.startDriver(); 6626 mWakeLock.release(); 6627 transitionTo(mDriverStartingState); 6628 break; 6629 default: 6630 return NOT_HANDLED; 6631 } 6632 return HANDLED; 6633 } 6634 } 6635 6636 class ScanModeState extends State { 6637 private int mLastOperationMode; 6638 @Override 6639 public void enter() { 6640 mLastOperationMode = mOperationalMode; 6641 } 6642 @Override 6643 public boolean processMessage(Message message) { 6644 logStateAndMessage(message, this); 6645 6646 switch(message.what) { 6647 case CMD_SET_OPERATIONAL_MODE: 6648 if (message.arg1 == CONNECT_MODE) { 6649 6650 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6651 setWifiState(WIFI_STATE_ENABLED); 6652 // Load and re-enable networks when going back to enabled state 6653 // This is essential for networks to show up after restore 6654 mWifiConfigStore.loadAndEnableAllNetworks(); 6655 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6656 } else { 6657 mWifiConfigStore.enableAllNetworks(); 6658 } 6659 6660 // Try autojoining with recent network already present in the cache 6661 // If none are found then trigger a scan which will trigger autojoin 6662 // upon reception of scan results event 6663 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6664 startScan(ENABLE_WIFI, 0, null, null); 6665 } 6666 6667 // Loose last selection choice since user toggled WiFi 6668 mWifiConfigStore. 6669 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6670 6671 mOperationalMode = CONNECT_MODE; 6672 transitionTo(mDisconnectedState); 6673 } else { 6674 // Nothing to do 6675 return HANDLED; 6676 } 6677 break; 6678 // Handle scan. All the connection related commands are 6679 // handled only in ConnectModeState 6680 case CMD_START_SCAN: 6681 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6682 break; 6683 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6684 SupplicantState state = handleSupplicantStateChange(message); 6685 if(DBG) log("SupplicantState= " + state); 6686 break; 6687 default: 6688 return NOT_HANDLED; 6689 } 6690 return HANDLED; 6691 } 6692 } 6693 6694 6695 String smToString(Message message) { 6696 return smToString(message.what); 6697 } 6698 6699 String smToString(int what) { 6700 String s = "unknown"; 6701 switch (what) { 6702 case WifiMonitor.DRIVER_HUNG_EVENT: 6703 s = "DRIVER_HUNG_EVENT"; 6704 break; 6705 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6706 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6707 break; 6708 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6709 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6710 break; 6711 case CMD_SET_FREQUENCY_BAND: 6712 s = "CMD_SET_FREQUENCY_BAND"; 6713 break; 6714 case CMD_DELAYED_NETWORK_DISCONNECT: 6715 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6716 break; 6717 case CMD_TEST_NETWORK_DISCONNECT: 6718 s = "CMD_TEST_NETWORK_DISCONNECT"; 6719 break; 6720 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6721 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6722 break; 6723 case CMD_DISABLE_EPHEMERAL_NETWORK: 6724 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6725 break; 6726 case CMD_START_DRIVER: 6727 s = "CMD_START_DRIVER"; 6728 break; 6729 case CMD_STOP_DRIVER: 6730 s = "CMD_STOP_DRIVER"; 6731 break; 6732 case CMD_STOP_SUPPLICANT: 6733 s = "CMD_STOP_SUPPLICANT"; 6734 break; 6735 case CMD_STOP_SUPPLICANT_FAILED: 6736 s = "CMD_STOP_SUPPLICANT_FAILED"; 6737 break; 6738 case CMD_START_SUPPLICANT: 6739 s = "CMD_START_SUPPLICANT"; 6740 break; 6741 case CMD_REQUEST_AP_CONFIG: 6742 s = "CMD_REQUEST_AP_CONFIG"; 6743 break; 6744 case CMD_RESPONSE_AP_CONFIG: 6745 s = "CMD_RESPONSE_AP_CONFIG"; 6746 break; 6747 case CMD_TETHER_STATE_CHANGE: 6748 s = "CMD_TETHER_STATE_CHANGE"; 6749 break; 6750 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6751 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6752 break; 6753 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6754 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6755 break; 6756 case CMD_ADD_OR_UPDATE_NETWORK: 6757 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6758 break; 6759 case CMD_REMOVE_NETWORK: 6760 s = "CMD_REMOVE_NETWORK"; 6761 break; 6762 case CMD_ENABLE_NETWORK: 6763 s = "CMD_ENABLE_NETWORK"; 6764 break; 6765 case CMD_ENABLE_ALL_NETWORKS: 6766 s = "CMD_ENABLE_ALL_NETWORKS"; 6767 break; 6768 case CMD_AUTO_CONNECT: 6769 s = "CMD_AUTO_CONNECT"; 6770 break; 6771 case CMD_AUTO_ROAM: 6772 s = "CMD_AUTO_ROAM"; 6773 break; 6774 case CMD_AUTO_SAVE_NETWORK: 6775 s = "CMD_AUTO_SAVE_NETWORK"; 6776 break; 6777 case CMD_BOOT_COMPLETED: 6778 s = "CMD_BOOT_COMPLETED"; 6779 break; 6780 case DhcpStateMachine.CMD_START_DHCP: 6781 s = "CMD_START_DHCP"; 6782 break; 6783 case DhcpStateMachine.CMD_STOP_DHCP: 6784 s = "CMD_STOP_DHCP"; 6785 break; 6786 case DhcpStateMachine.CMD_RENEW_DHCP: 6787 s = "CMD_RENEW_DHCP"; 6788 break; 6789 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6790 s = "CMD_PRE_DHCP_ACTION"; 6791 break; 6792 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6793 s = "CMD_POST_DHCP_ACTION"; 6794 break; 6795 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6796 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6797 break; 6798 case DhcpStateMachine.CMD_ON_QUIT: 6799 s = "CMD_ON_QUIT"; 6800 break; 6801 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6802 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6803 break; 6804 case WifiManager.DISABLE_NETWORK: 6805 s = "WifiManager.DISABLE_NETWORK"; 6806 break; 6807 case CMD_BLACKLIST_NETWORK: 6808 s = "CMD_BLACKLIST_NETWORK"; 6809 break; 6810 case CMD_CLEAR_BLACKLIST: 6811 s = "CMD_CLEAR_BLACKLIST"; 6812 break; 6813 case CMD_SAVE_CONFIG: 6814 s = "CMD_SAVE_CONFIG"; 6815 break; 6816 case CMD_GET_CONFIGURED_NETWORKS: 6817 s = "CMD_GET_CONFIGURED_NETWORKS"; 6818 break; 6819 case CMD_GET_SUPPORTED_FEATURES: 6820 s = "CMD_GET_SUPPORTED_FEATURES"; 6821 break; 6822 case CMD_UNWANTED_NETWORK: 6823 s = "CMD_UNWANTED_NETWORK"; 6824 break; 6825 case CMD_NETWORK_STATUS: 6826 s = "CMD_NETWORK_STATUS"; 6827 break; 6828 case CMD_GET_LINK_LAYER_STATS: 6829 s = "CMD_GET_LINK_LAYER_STATS"; 6830 break; 6831 case CMD_GET_MATCHING_CONFIG: 6832 s = "CMD_GET_MATCHING_CONFIG"; 6833 break; 6834 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6835 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6836 break; 6837 case CMD_DISCONNECT: 6838 s = "CMD_DISCONNECT"; 6839 break; 6840 case CMD_RECONNECT: 6841 s = "CMD_RECONNECT"; 6842 break; 6843 case CMD_REASSOCIATE: 6844 s = "CMD_REASSOCIATE"; 6845 break; 6846 case CMD_GET_CONNECTION_STATISTICS: 6847 s = "CMD_GET_CONNECTION_STATISTICS"; 6848 break; 6849 case CMD_SET_HIGH_PERF_MODE: 6850 s = "CMD_SET_HIGH_PERF_MODE"; 6851 break; 6852 case CMD_SET_COUNTRY_CODE: 6853 s = "CMD_SET_COUNTRY_CODE"; 6854 break; 6855 case CMD_ENABLE_RSSI_POLL: 6856 s = "CMD_ENABLE_RSSI_POLL"; 6857 break; 6858 case CMD_RSSI_POLL: 6859 s = "CMD_RSSI_POLL"; 6860 break; 6861 case CMD_START_PACKET_FILTERING: 6862 s = "CMD_START_PACKET_FILTERING"; 6863 break; 6864 case CMD_STOP_PACKET_FILTERING: 6865 s = "CMD_STOP_PACKET_FILTERING"; 6866 break; 6867 case CMD_SET_SUSPEND_OPT_ENABLED: 6868 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6869 break; 6870 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6871 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6872 break; 6873 case CMD_UPDATE_LINKPROPERTIES: 6874 s = "CMD_UPDATE_LINKPROPERTIES"; 6875 break; 6876 case CMD_RELOAD_TLS_AND_RECONNECT: 6877 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6878 break; 6879 case WifiManager.CONNECT_NETWORK: 6880 s = "CONNECT_NETWORK"; 6881 break; 6882 case WifiManager.SAVE_NETWORK: 6883 s = "SAVE_NETWORK"; 6884 break; 6885 case WifiManager.FORGET_NETWORK: 6886 s = "FORGET_NETWORK"; 6887 break; 6888 case WifiMonitor.SUP_CONNECTION_EVENT: 6889 s = "SUP_CONNECTION_EVENT"; 6890 break; 6891 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6892 s = "SUP_DISCONNECTION_EVENT"; 6893 break; 6894 case WifiMonitor.SCAN_RESULTS_EVENT: 6895 s = "SCAN_RESULTS_EVENT"; 6896 break; 6897 case WifiMonitor.SCAN_FAILED_EVENT: 6898 s = "SCAN_FAILED_EVENT"; 6899 break; 6900 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6901 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6902 break; 6903 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6904 s = "AUTHENTICATION_FAILURE_EVENT"; 6905 break; 6906 case WifiMonitor.SSID_TEMP_DISABLED: 6907 s = "SSID_TEMP_DISABLED"; 6908 break; 6909 case WifiMonitor.SSID_REENABLED: 6910 s = "SSID_REENABLED"; 6911 break; 6912 case WifiMonitor.WPS_SUCCESS_EVENT: 6913 s = "WPS_SUCCESS_EVENT"; 6914 break; 6915 case WifiMonitor.WPS_FAIL_EVENT: 6916 s = "WPS_FAIL_EVENT"; 6917 break; 6918 case WifiMonitor.SUP_REQUEST_IDENTITY: 6919 s = "SUP_REQUEST_IDENTITY"; 6920 break; 6921 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6922 s = "NETWORK_CONNECTION_EVENT"; 6923 break; 6924 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6925 s = "NETWORK_DISCONNECTION_EVENT"; 6926 break; 6927 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6928 s = "ASSOCIATION_REJECTION_EVENT"; 6929 break; 6930 case WifiMonitor.ANQP_DONE_EVENT: 6931 s = "WifiMonitor.ANQP_DONE_EVENT"; 6932 break; 6933 case WifiMonitor.GAS_QUERY_DONE_EVENT: 6934 s = "WifiMonitor.GAS_QUERY_DONE_EVENT"; 6935 break; 6936 case WifiMonitor.HS20_DEAUTH_EVENT: 6937 s = "WifiMonitor.HS20_DEAUTH_EVENT"; 6938 break; 6939 case WifiMonitor.GAS_QUERY_START_EVENT: 6940 s = "WifiMonitor.GAS_QUERY_START_EVENT"; 6941 break; 6942 case WifiMonitor.RSN_PMKID_MISMATCH_EVENT: 6943 s = "WifiMonitor.RSN_PMKID_MISMATCH_EVENT"; 6944 break; 6945 case CMD_SET_OPERATIONAL_MODE: 6946 s = "CMD_SET_OPERATIONAL_MODE"; 6947 break; 6948 case CMD_START_SCAN: 6949 s = "CMD_START_SCAN"; 6950 break; 6951 case CMD_DISABLE_P2P_RSP: 6952 s = "CMD_DISABLE_P2P_RSP"; 6953 break; 6954 case CMD_DISABLE_P2P_REQ: 6955 s = "CMD_DISABLE_P2P_REQ"; 6956 break; 6957 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6958 s = "GOOD_LINK_DETECTED"; 6959 break; 6960 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6961 s = "POOR_LINK_DETECTED"; 6962 break; 6963 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6964 s = "GROUP_CREATING_TIMED_OUT"; 6965 break; 6966 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6967 s = "P2P_CONNECTION_CHANGED"; 6968 break; 6969 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6970 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6971 break; 6972 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6973 s = "P2P.SET_MIRACAST_MODE"; 6974 break; 6975 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6976 s = "P2P.BLOCK_DISCOVERY"; 6977 break; 6978 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6979 s = "P2P.SET_COUNTRY_CODE"; 6980 break; 6981 case WifiManager.CANCEL_WPS: 6982 s = "CANCEL_WPS"; 6983 break; 6984 case WifiManager.CANCEL_WPS_FAILED: 6985 s = "CANCEL_WPS_FAILED"; 6986 break; 6987 case WifiManager.CANCEL_WPS_SUCCEDED: 6988 s = "CANCEL_WPS_SUCCEDED"; 6989 break; 6990 case WifiManager.START_WPS: 6991 s = "START_WPS"; 6992 break; 6993 case WifiManager.START_WPS_SUCCEEDED: 6994 s = "START_WPS_SUCCEEDED"; 6995 break; 6996 case WifiManager.WPS_FAILED: 6997 s = "WPS_FAILED"; 6998 break; 6999 case WifiManager.WPS_COMPLETED: 7000 s = "WPS_COMPLETED"; 7001 break; 7002 case WifiManager.RSSI_PKTCNT_FETCH: 7003 s = "RSSI_PKTCNT_FETCH"; 7004 break; 7005 case CMD_IP_CONFIGURATION_LOST: 7006 s = "CMD_IP_CONFIGURATION_LOST"; 7007 break; 7008 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7009 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 7010 break; 7011 case CMD_IP_REACHABILITY_LOST: 7012 s = "CMD_IP_REACHABILITY_LOST"; 7013 break; 7014 case CMD_STATIC_IP_SUCCESS: 7015 s = "CMD_STATIC_IP_SUCCESSFUL"; 7016 break; 7017 case CMD_STATIC_IP_FAILURE: 7018 s = "CMD_STATIC_IP_FAILURE"; 7019 break; 7020 case DhcpStateMachine.DHCP_SUCCESS: 7021 s = "DHCP_SUCCESS"; 7022 break; 7023 case DhcpStateMachine.DHCP_FAILURE: 7024 s = "DHCP_FAILURE"; 7025 break; 7026 case CMD_TARGET_BSSID: 7027 s = "CMD_TARGET_BSSID"; 7028 break; 7029 case CMD_ASSOCIATED_BSSID: 7030 s = "CMD_ASSOCIATED_BSSID"; 7031 break; 7032 case CMD_REMOVE_APP_CONFIGURATIONS: 7033 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 7034 break; 7035 case CMD_REMOVE_USER_CONFIGURATIONS: 7036 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 7037 break; 7038 case CMD_ROAM_WATCHDOG_TIMER: 7039 s = "CMD_ROAM_WATCHDOG_TIMER"; 7040 break; 7041 case CMD_SCREEN_STATE_CHANGED: 7042 s = "CMD_SCREEN_STATE_CHANGED"; 7043 break; 7044 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7045 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 7046 break; 7047 case CMD_RESTART_AUTOJOIN_OFFLOAD: 7048 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 7049 break; 7050 case CMD_STARTED_PNO_DBG: 7051 s = "CMD_STARTED_PNO_DBG"; 7052 break; 7053 case CMD_STARTED_GSCAN_DBG: 7054 s = "CMD_STARTED_GSCAN_DBG"; 7055 break; 7056 case CMD_PNO_NETWORK_FOUND: 7057 s = "CMD_PNO_NETWORK_FOUND"; 7058 break; 7059 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 7060 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 7061 break; 7062 case CMD_START_IP_PACKET_OFFLOAD: 7063 s = "CMD_START_IP_PACKET_OFFLOAD"; 7064 break; 7065 case CMD_STOP_IP_PACKET_OFFLOAD: 7066 s = "CMD_STOP_IP_PACKET_OFFLOAD"; 7067 break; 7068 case CMD_START_RSSI_MONITORING_OFFLOAD: 7069 s = "CMD_START_RSSI_MONITORING_OFFLOAD"; 7070 break; 7071 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 7072 s = "CMD_STOP_RSSI_MONITORING_OFFLOAD"; 7073 break; 7074 case CMD_RSSI_THRESHOLD_BREACH: 7075 s = "CMD_RSSI_THRESHOLD_BREACH"; 7076 break; 7077 default: 7078 s = "what:" + Integer.toString(what); 7079 break; 7080 } 7081 return s; 7082 } 7083 7084 void registerConnected() { 7085 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7086 long now_ms = System.currentTimeMillis(); 7087 // We are switching away from this configuration, 7088 // hence record the time we were connected last 7089 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7090 if (config != null) { 7091 config.lastConnected = System.currentTimeMillis(); 7092 config.autoJoinBailedDueToLowRssi = false; 7093 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 7094 config.numConnectionFailures = 0; 7095 config.numIpConfigFailures = 0; 7096 config.numAuthFailures = 0; 7097 config.numAssociation++; 7098 } 7099 mBadLinkspeedcount = 0; 7100 } 7101 } 7102 7103 void registerDisconnected() { 7104 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7105 long now_ms = System.currentTimeMillis(); 7106 // We are switching away from this configuration, 7107 // hence record the time we were connected last 7108 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7109 if (config != null) { 7110 config.lastDisconnected = System.currentTimeMillis(); 7111 if (config.ephemeral) { 7112 // Remove ephemeral WifiConfigurations from file 7113 mWifiConfigStore.forgetNetwork(mLastNetworkId); 7114 } 7115 } 7116 } 7117 } 7118 7119 void noteWifiDisabledWhileAssociated() { 7120 // We got disabled by user while we were associated, make note of it 7121 int rssi = mWifiInfo.getRssi(); 7122 WifiConfiguration config = getCurrentWifiConfiguration(); 7123 if (getCurrentState() == mConnectedState 7124 && rssi != WifiInfo.INVALID_RSSI 7125 && config != null) { 7126 boolean is24GHz = mWifiInfo.is24GHz(); 7127 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 7128 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 7129 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 7130 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 7131 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 7132 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 7133 if (isBadRSSI) { 7134 // Take note that we got disabled while RSSI was Bad 7135 config.numUserTriggeredWifiDisableLowRSSI++; 7136 } else if (isLowRSSI) { 7137 // Take note that we got disabled while RSSI was Low 7138 config.numUserTriggeredWifiDisableBadRSSI++; 7139 } else if (!isHighRSSI) { 7140 // Take note that we got disabled while RSSI was Not high 7141 config.numUserTriggeredWifiDisableNotHighRSSI++; 7142 } 7143 } 7144 } 7145 7146 WifiConfiguration getCurrentWifiConfiguration() { 7147 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 7148 return null; 7149 } 7150 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 7151 } 7152 7153 ScanResult getCurrentScanResult() { 7154 WifiConfiguration config = getCurrentWifiConfiguration(); 7155 if (config == null) { 7156 return null; 7157 } 7158 String BSSID = mWifiInfo.getBSSID(); 7159 if (BSSID == null) { 7160 BSSID = mTargetRoamBSSID; 7161 } 7162 ScanDetailCache scanDetailCache = 7163 mWifiConfigStore.getScanDetailCache(config); 7164 7165 if (scanDetailCache == null) { 7166 return null; 7167 } 7168 7169 return scanDetailCache.get(BSSID); 7170 } 7171 7172 String getCurrentBSSID() { 7173 if (linkDebouncing) { 7174 return null; 7175 } 7176 return mLastBssid; 7177 } 7178 7179 class ConnectModeState extends State { 7180 7181 @Override 7182 public void enter() { 7183 connectScanningService(); 7184 } 7185 7186 @Override 7187 public boolean processMessage(Message message) { 7188 WifiConfiguration config; 7189 int netId; 7190 boolean ok; 7191 boolean didDisconnect; 7192 String bssid; 7193 String ssid; 7194 NetworkUpdateResult result; 7195 logStateAndMessage(message, this); 7196 7197 switch (message.what) { 7198 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7199 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 7200 didBlackListBSSID = false; 7201 bssid = (String) message.obj; 7202 if (bssid == null || TextUtils.isEmpty(bssid)) { 7203 // If BSSID is null, use the target roam BSSID 7204 bssid = mTargetRoamBSSID; 7205 } 7206 if (bssid != null) { 7207 // If we have a BSSID, tell configStore to black list it 7208 synchronized(mScanResultCache) { 7209 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 7210 (mLastNetworkId, bssid, false); 7211 } 7212 } 7213 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 7214 break; 7215 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7216 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 7217 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 7218 break; 7219 case WifiMonitor.SSID_TEMP_DISABLED: 7220 case WifiMonitor.SSID_REENABLED: 7221 String substr = (String) message.obj; 7222 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 7223 "temp-disabled" : "re-enabled"; 7224 logd("ConnectModeState SSID state=" + en + " nid=" 7225 + Integer.toString(message.arg1) + " [" + substr + "]"); 7226 synchronized(mScanResultCache) { 7227 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 7228 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 7229 } 7230 break; 7231 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7232 SupplicantState state = handleSupplicantStateChange(message); 7233 // A driver/firmware hang can now put the interface in a down state. 7234 // We detect the interface going down and recover from it 7235 if (!SupplicantState.isDriverActive(state)) { 7236 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7237 handleNetworkDisconnect(); 7238 } 7239 log("Detected an interface down, restart driver"); 7240 transitionTo(mDriverStoppedState); 7241 sendMessage(CMD_START_DRIVER); 7242 break; 7243 } 7244 7245 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 7246 // when authentication times out after a successful connection, 7247 // we can figure this from the supplicant state. If supplicant 7248 // state is DISCONNECTED, but the mNetworkInfo says we are not 7249 // disconnected, we need to handle a disconnection 7250 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 7251 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 7252 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 7253 handleNetworkDisconnect(); 7254 transitionTo(mDisconnectedState); 7255 } 7256 7257 // If we have COMPLETED a connection to a BSSID, start doing 7258 // DNAv4/DNAv6 -style probing for on-link neighbors of 7259 // interest (e.g. routers); harmless if none are configured. 7260 if (state == SupplicantState.COMPLETED) { 7261 if (mIpReachabilityMonitor != null) { 7262 mIpReachabilityMonitor.probeAll(); 7263 } 7264 } 7265 7266 if (state == SupplicantState.ASSOCIATED) { 7267 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7268 if (stateChangeResult != null) { 7269 mCurrentAssociateNetworkId = stateChangeResult.networkId; 7270 } 7271 } 7272 break; 7273 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7274 if (message.arg1 == 1) { 7275 mWifiNative.disconnect(); 7276 mTemporarilyDisconnectWifi = true; 7277 } else { 7278 mWifiNative.reconnect(); 7279 mTemporarilyDisconnectWifi = false; 7280 } 7281 break; 7282 case CMD_ADD_OR_UPDATE_NETWORK: 7283 config = (WifiConfiguration) message.obj; 7284 7285 if (!recordUidIfAuthorized(config, message.sendingUid, 7286 /* onlyAnnotate */ false)) { 7287 logw("Not authorized to update network " 7288 + " config=" + config.SSID 7289 + " cnid=" + config.networkId 7290 + " uid=" + message.sendingUid); 7291 replyToMessage(message, message.what, FAILURE); 7292 break; 7293 } 7294 7295 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 7296 if (res < 0) { 7297 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7298 } else { 7299 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 7300 if (curConfig != null && config != null) { 7301 if (curConfig.priority < config.priority 7302 && config.status == WifiConfiguration.Status.ENABLED) { 7303 // Interpret this as a connect attempt 7304 // Set the last selected configuration so as to allow the system to 7305 // stick the last user choice without persisting the choice 7306 mWifiConfigStore.setLastSelectedConfiguration(res); 7307 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7308 mWifiConfigStore.writeKnownNetworkHistory(false); 7309 7310 // Remember time of last connection attempt 7311 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7312 7313 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7314 7315 // As a courtesy to the caller, trigger a scan now 7316 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 7317 } 7318 } 7319 } 7320 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 7321 break; 7322 case CMD_REMOVE_NETWORK: 7323 netId = message.arg1; 7324 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7325 /* onlyAnnotate */ false)) { 7326 logw("Not authorized to remove network " 7327 + " cnid=" + netId 7328 + " uid=" + message.sendingUid); 7329 replyToMessage(message, message.what, FAILURE); 7330 break; 7331 } 7332 7333 ok = mWifiConfigStore.removeNetwork(message.arg1); 7334 if (!ok) { 7335 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7336 } 7337 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7338 break; 7339 case CMD_ENABLE_NETWORK: 7340 boolean disableOthers = message.arg2 == 1; 7341 netId = message.arg1; 7342 config = mWifiConfigStore.getWifiConfiguration(netId); 7343 if (config == null) { 7344 loge("No network with id = " + netId); 7345 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7346 break; 7347 } 7348 7349 // Tell autojoin the user did try to select to that network 7350 // However, do NOT persist the choice by bumping the priority of the network 7351 if (disableOthers) { 7352 mWifiAutoJoinController. 7353 updateConfigurationHistory(netId, true, false); 7354 // Set the last selected configuration so as to allow the system to 7355 // stick the last user choice without persisting the choice 7356 mWifiConfigStore.setLastSelectedConfiguration(netId); 7357 7358 // Remember time of last connection attempt 7359 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7360 7361 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7362 } 7363 // Cancel auto roam requests 7364 autoRoamSetBSSID(netId, "any"); 7365 7366 int uid = message.sendingUid; 7367 ok = mWifiConfigStore.enableNetwork(netId, disableOthers, uid); 7368 if (!ok) { 7369 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7370 } 7371 7372 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 7373 break; 7374 case CMD_ENABLE_ALL_NETWORKS: 7375 long time = android.os.SystemClock.elapsedRealtime(); 7376 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 7377 mWifiConfigStore.enableAllNetworks(); 7378 mLastEnableAllNetworksTime = time; 7379 } 7380 break; 7381 case WifiManager.DISABLE_NETWORK: 7382 if (mWifiConfigStore.disableNetwork(message.arg1, 7383 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 7384 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 7385 } else { 7386 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7387 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 7388 WifiManager.ERROR); 7389 } 7390 break; 7391 case CMD_DISABLE_EPHEMERAL_NETWORK: 7392 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 7393 if (config != null) { 7394 if (config.networkId == mLastNetworkId) { 7395 // Disconnect and let autojoin reselect a new network 7396 sendMessage(CMD_DISCONNECT); 7397 } 7398 } 7399 break; 7400 case CMD_BLACKLIST_NETWORK: 7401 mWifiConfigStore.blackListBssid((String) message.obj); 7402 break; 7403 case CMD_CLEAR_BLACKLIST: 7404 mWifiConfigStore.clearBssidBlacklist(); 7405 break; 7406 case CMD_SAVE_CONFIG: 7407 ok = mWifiConfigStore.saveConfig(); 7408 7409 if (DBG) logd("did save config " + ok); 7410 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 7411 7412 // Inform the backup manager about a data change 7413 IBackupManager ibm = IBackupManager.Stub.asInterface( 7414 ServiceManager.getService(Context.BACKUP_SERVICE)); 7415 if (ibm != null) { 7416 try { 7417 ibm.dataChanged("com.android.providers.settings"); 7418 } catch (Exception e) { 7419 // Try again later 7420 } 7421 } 7422 break; 7423 case CMD_GET_CONFIGURED_NETWORKS: 7424 replyToMessage(message, message.what, 7425 mWifiConfigStore.getConfiguredNetworks()); 7426 break; 7427 case WifiMonitor.SUP_REQUEST_IDENTITY: 7428 int networkId = message.arg2; 7429 boolean identitySent = false; 7430 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 7431 7432 if (targetWificonfiguration != null 7433 && targetWificonfiguration.enterpriseConfig != null) { 7434 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 7435 } 7436 7437 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 7438 if (targetWificonfiguration != null 7439 && targetWificonfiguration.networkId == networkId 7440 && targetWificonfiguration.allowedKeyManagement 7441 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 7442 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 7443 || eapMethod == WifiEnterpriseConfig.Eap.AKA 7444 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 7445 TelephonyManager tm = (TelephonyManager) 7446 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7447 if (tm != null) { 7448 String imsi = tm.getSubscriberId(); 7449 String mccMnc = ""; 7450 7451 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 7452 mccMnc = tm.getSimOperator(); 7453 7454 String identity = buildIdentity(eapMethod, imsi, mccMnc); 7455 7456 if (!identity.isEmpty()) { 7457 mWifiNative.simIdentityResponse(networkId, identity); 7458 identitySent = true; 7459 } 7460 } 7461 } 7462 if (!identitySent) { 7463 // Supplicant lacks credentials to connect to that network, hence black list 7464 ssid = (String) message.obj; 7465 if (targetWificonfiguration != null && ssid != null 7466 && targetWificonfiguration.SSID != null 7467 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 7468 mWifiConfigStore.handleSSIDStateChange( 7469 targetWificonfiguration.networkId, false, 7470 "AUTH_FAILED no identity", null); 7471 } 7472 // Disconnect now, as we don't have any way to fullfill 7473 // the supplicant request. 7474 mWifiConfigStore.setLastSelectedConfiguration( 7475 WifiConfiguration.INVALID_NETWORK_ID); 7476 mWifiNative.disconnect(); 7477 } 7478 break; 7479 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 7480 logd("Received SUP_REQUEST_SIM_AUTH"); 7481 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 7482 if (requestData != null) { 7483 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 7484 handleGsmAuthRequest(requestData); 7485 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 7486 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 7487 handle3GAuthRequest(requestData); 7488 } 7489 } else { 7490 loge("Invalid sim auth request"); 7491 } 7492 break; 7493 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 7494 replyToMessage(message, message.what, 7495 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 7496 break; 7497 case CMD_GET_MATCHING_CONFIG: 7498 replyToMessage(message, message.what, 7499 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 7500 break; 7501 /* Do a redundant disconnect without transition */ 7502 case CMD_DISCONNECT: 7503 mWifiConfigStore.setLastSelectedConfiguration 7504 (WifiConfiguration.INVALID_NETWORK_ID); 7505 mWifiNative.disconnect(); 7506 break; 7507 case CMD_RECONNECT: 7508 mWifiAutoJoinController.attemptAutoJoin(); 7509 break; 7510 case CMD_REASSOCIATE: 7511 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7512 mWifiNative.reassociate(); 7513 break; 7514 case CMD_RELOAD_TLS_AND_RECONNECT: 7515 if (mWifiConfigStore.needsUnlockedKeyStore()) { 7516 logd("Reconnecting to give a chance to un-connected TLS networks"); 7517 mWifiNative.disconnect(); 7518 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7519 mWifiNative.reconnect(); 7520 } 7521 break; 7522 case CMD_AUTO_ROAM: 7523 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7524 return HANDLED; 7525 case CMD_AUTO_CONNECT: 7526 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 7527 * associated status to the STATUS command but somehow-someplace still thinks 7528 * it is associated and thus will ignore select/reconnect command with 7529 * following message: 7530 * "Already associated with the selected network - do nothing" 7531 * 7532 * Hence, sends a disconnect to supplicant first. 7533 */ 7534 didDisconnect = false; 7535 if (getCurrentState() != mDisconnectedState) { 7536 /** Supplicant will ignore the reconnect if we are currently associated, 7537 * hence trigger a disconnect 7538 */ 7539 didDisconnect = true; 7540 mWifiNative.disconnect(); 7541 } 7542 7543 /* connect command coming from auto-join */ 7544 config = (WifiConfiguration) message.obj; 7545 netId = message.arg1; 7546 int roam = message.arg2; 7547 logd("CMD_AUTO_CONNECT sup state " 7548 + mSupplicantStateTracker.getSupplicantStateName() 7549 + " my state " + getCurrentState().getName() 7550 + " nid=" + Integer.toString(netId) 7551 + " roam=" + Integer.toString(roam)); 7552 if (config == null) { 7553 loge("AUTO_CONNECT and no config, bail out..."); 7554 break; 7555 } 7556 7557 /* Make sure we cancel any previous roam request */ 7558 autoRoamSetBSSID(netId, config.BSSID); 7559 7560 /* Save the network config */ 7561 logd("CMD_AUTO_CONNECT will save config -> " + config.SSID 7562 + " nid=" + Integer.toString(netId)); 7563 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7564 netId = result.getNetworkId(); 7565 logd("CMD_AUTO_CONNECT did save config -> " 7566 + " nid=" + Integer.toString(netId)); 7567 7568 // Since we updated the config,read it back from config store: 7569 config = mWifiConfigStore.getWifiConfiguration(netId); 7570 if (config == null) { 7571 loge("CMD_AUTO_CONNECT couldn't update the config, got null config"); 7572 break; 7573 } 7574 if (netId != config.networkId) { 7575 loge("CMD_AUTO_CONNECT couldn't update the config, want" 7576 + " nid=" + Integer.toString(netId) + " but got" + config.networkId); 7577 break; 7578 } 7579 7580 if (deferForUserInput(message, netId, false)) { 7581 break; 7582 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7583 WifiConfiguration.USER_BANNED) { 7584 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7585 WifiManager.NOT_AUTHORIZED); 7586 break; 7587 } 7588 7589 // Make sure the network is enabled, since supplicant will not reenable it 7590 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7591 7592 // If we're autojoining a network that the user or an app explicitly selected, 7593 // keep track of the UID that selected it. 7594 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 7595 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 7596 7597 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 7598 lastConnectUid) && mWifiNative.reconnect()) { 7599 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7600 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7601 config = mWifiConfigStore.getWifiConfiguration(netId); 7602 if (config != null 7603 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7604 // If we autojoined a different config than the user selected one, 7605 // it means we could not see the last user selection, 7606 // or that the last user selection was faulty and ended up blacklisted 7607 // for some reason (in which case the user is notified with an error 7608 // message in the Wifi picker), and thus we managed to auto-join away 7609 // from the selected config. -> in that case we need to forget 7610 // the selection because we don't want to abruptly switch back to it. 7611 // 7612 // Note that the user selection is also forgotten after a period of time 7613 // during which the device has been disconnected. 7614 // The default value is 30 minutes : see the code path at bottom of 7615 // setScanResults() function. 7616 mWifiConfigStore. 7617 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7618 } 7619 mAutoRoaming = roam; 7620 if (isRoaming() || linkDebouncing) { 7621 transitionTo(mRoamingState); 7622 } else if (didDisconnect) { 7623 transitionTo(mDisconnectingState); 7624 } else { 7625 /* Already in disconnected state, nothing to change */ 7626 if (!mScreenOn && mLegacyPnoEnabled && mBackgroundScanSupported) { 7627 int delay = 60 * 1000; 7628 if (VDBG) { 7629 logd("Starting PNO alarm: " + delay); 7630 } 7631 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 7632 System.currentTimeMillis() + delay, 7633 mPnoIntent); 7634 } 7635 mRestartAutoJoinOffloadCounter++; 7636 } 7637 } else { 7638 loge("Failed to connect config: " + config + " netId: " + netId); 7639 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7640 WifiManager.ERROR); 7641 break; 7642 } 7643 break; 7644 case CMD_REMOVE_APP_CONFIGURATIONS: 7645 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 7646 break; 7647 case CMD_REMOVE_USER_CONFIGURATIONS: 7648 mWifiConfigStore.removeNetworksForUser(message.arg1); 7649 break; 7650 case WifiManager.CONNECT_NETWORK: 7651 /** 7652 * The connect message can contain a network id passed as arg1 on message or 7653 * or a config passed as obj on message. 7654 * For a new network, a config is passed to create and connect. 7655 * For an existing network, a network id is passed 7656 */ 7657 netId = message.arg1; 7658 config = (WifiConfiguration) message.obj; 7659 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7660 boolean updatedExisting = false; 7661 7662 /* Save the network config */ 7663 if (config != null) { 7664 // When connecting to an access point, WifiStateMachine wants to update the 7665 // relevant config with administrative data. This update should not be 7666 // considered a 'real' update, therefore lockdown by Device Owner must be 7667 // disregarded. 7668 if (!recordUidIfAuthorized(config, message.sendingUid, 7669 /* onlyAnnotate */ true)) { 7670 logw("Not authorized to update network " 7671 + " config=" + config.SSID 7672 + " cnid=" + config.networkId 7673 + " uid=" + message.sendingUid); 7674 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7675 WifiManager.NOT_AUTHORIZED); 7676 break; 7677 } 7678 7679 String configKey = config.configKey(true /* allowCached */); 7680 WifiConfiguration savedConfig = 7681 mWifiConfigStore.getWifiConfiguration(configKey); 7682 if (savedConfig != null) { 7683 // There is an existing config with this netId, but it wasn't exposed 7684 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7685 // getConfiguredNetworks). Remove those bits and update the config. 7686 config = savedConfig; 7687 logd("CONNECT_NETWORK updating existing config with id=" + 7688 config.networkId + " configKey=" + configKey); 7689 config.ephemeral = false; 7690 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7691 updatedExisting = true; 7692 } 7693 7694 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7695 netId = result.getNetworkId(); 7696 } 7697 config = mWifiConfigStore.getWifiConfiguration(netId); 7698 7699 if (config == null) { 7700 logd("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7701 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7702 + getCurrentState().getName()); 7703 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7704 WifiManager.ERROR); 7705 break; 7706 } else { 7707 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7708 logd("CONNECT_NETWORK id=" + Integer.toString(netId) 7709 + " config=" + config.SSID 7710 + " cnid=" + config.networkId 7711 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7712 + " my state " + getCurrentState().getName() 7713 + " uid = " + message.sendingUid 7714 + wasSkipped); 7715 } 7716 7717 autoRoamSetBSSID(netId, "any"); 7718 7719 if (message.sendingUid == Process.WIFI_UID 7720 || message.sendingUid == Process.SYSTEM_UID) { 7721 // As a sanity measure, clear the BSSID in the supplicant network block. 7722 // If system or Wifi Settings want to connect, they will not 7723 // specify the BSSID. 7724 // If an app however had added a BSSID to this configuration, and the BSSID 7725 // was wrong, Then we would forever fail to connect until that BSSID 7726 // is cleaned up. 7727 clearConfigBSSID(config, "CONNECT_NETWORK"); 7728 } 7729 7730 if (deferForUserInput(message, netId, true)) { 7731 break; 7732 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 7733 WifiConfiguration.USER_BANNED) { 7734 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7735 WifiManager.NOT_AUTHORIZED); 7736 break; 7737 } 7738 7739 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7740 7741 /* Tell autojoin the user did try to connect to that network if from settings */ 7742 boolean persist = 7743 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7744 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 7745 7746 mWifiConfigStore.setLastSelectedConfiguration(netId); 7747 7748 didDisconnect = false; 7749 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7750 && mLastNetworkId != netId) { 7751 /** Supplicant will ignore the reconnect if we are currently associated, 7752 * hence trigger a disconnect 7753 */ 7754 didDisconnect = true; 7755 mWifiNative.disconnect(); 7756 } 7757 7758 // Make sure the network is enabled, since supplicant will not reenable it 7759 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7760 7761 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 7762 message.sendingUid) && mWifiNative.reconnect()) { 7763 lastConnectAttemptTimestamp = System.currentTimeMillis(); 7764 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7765 7766 /* The state tracker handles enabling networks upon completion/failure */ 7767 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7768 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7769 if (didDisconnect) { 7770 /* Expect a disconnection from the old connection */ 7771 transitionTo(mDisconnectingState); 7772 } else if (updatedExisting && getCurrentState() == mConnectedState && 7773 getCurrentWifiConfiguration().networkId == netId) { 7774 // Update the current set of network capabilities, but stay in the 7775 // current state. 7776 updateCapabilities(config); 7777 } else { 7778 /** 7779 * Directly go to disconnected state where we 7780 * process the connection events from supplicant 7781 **/ 7782 transitionTo(mDisconnectedState); 7783 } 7784 } else { 7785 loge("Failed to connect config: " + config + " netId: " + netId); 7786 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7787 WifiManager.ERROR); 7788 break; 7789 } 7790 break; 7791 case WifiManager.SAVE_NETWORK: 7792 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7793 // Fall thru 7794 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7795 lastSavedConfigurationAttempt = null; // Used for debug 7796 config = (WifiConfiguration) message.obj; 7797 if (config == null) { 7798 loge("ERROR: SAVE_NETWORK with null configuration" 7799 + mSupplicantStateTracker.getSupplicantStateName() 7800 + " my state " + getCurrentState().getName()); 7801 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7802 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7803 WifiManager.ERROR); 7804 break; 7805 } 7806 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7807 int nid = config.networkId; 7808 logd("SAVE_NETWORK id=" + Integer.toString(nid) 7809 + " config=" + config.SSID 7810 + " nid=" + config.networkId 7811 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7812 + " my state " + getCurrentState().getName()); 7813 7814 // Only record the uid if this is user initiated 7815 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7816 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid, 7817 /* onlyAnnotate */ false)) { 7818 logw("Not authorized to update network " 7819 + " config=" + config.SSID 7820 + " cnid=" + config.networkId 7821 + " uid=" + message.sendingUid); 7822 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7823 WifiManager.NOT_AUTHORIZED); 7824 break; 7825 } 7826 7827 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7828 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7829 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7830 if (result.hasIpChanged()) { 7831 // The currently connection configuration was changed 7832 // We switched from DHCP to static or from static to DHCP, or the 7833 // static IP address has changed. 7834 log("Reconfiguring IP on connection"); 7835 // TODO: clear addresses and disable IPv6 7836 // to simplify obtainingIpState. 7837 transitionTo(mObtainingIpState); 7838 } 7839 if (result.hasProxyChanged()) { 7840 log("Reconfiguring proxy on connection"); 7841 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7842 } 7843 } 7844 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7845 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7846 7847 if (VDBG) { 7848 logd("Success save network nid=" 7849 + Integer.toString(result.getNetworkId())); 7850 } 7851 7852 synchronized(mScanResultCache) { 7853 /** 7854 * If the command comes from WifiManager, then 7855 * tell autojoin the user did try to modify and save that network, 7856 * and interpret the SAVE_NETWORK as a request to connect 7857 */ 7858 boolean user = message.what == WifiManager.SAVE_NETWORK; 7859 7860 // Did this connect come from settings 7861 boolean persistConnect = 7862 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7863 7864 if (user) { 7865 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7866 mWifiConfigStore.writeKnownNetworkHistory(false); 7867 } 7868 7869 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7870 , user, persistConnect); 7871 mWifiAutoJoinController.attemptAutoJoin(); 7872 } 7873 } else { 7874 loge("Failed to save network"); 7875 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7876 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7877 WifiManager.ERROR); 7878 } 7879 break; 7880 case WifiManager.FORGET_NETWORK: 7881 // Debug only, remember last configuration that was forgotten 7882 WifiConfiguration toRemove 7883 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7884 if (toRemove == null) { 7885 lastForgetConfigurationAttempt = null; 7886 } else { 7887 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7888 } 7889 // check that the caller owns this network 7890 netId = message.arg1; 7891 7892 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId, 7893 /* onlyAnnotate */ false)) { 7894 logw("Not authorized to forget network " 7895 + " cnid=" + netId 7896 + " uid=" + message.sendingUid); 7897 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7898 WifiManager.NOT_AUTHORIZED); 7899 break; 7900 } 7901 7902 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7903 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7904 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7905 (WifiConfiguration) message.obj); 7906 } else { 7907 loge("Failed to forget network"); 7908 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7909 WifiManager.ERROR); 7910 } 7911 break; 7912 case WifiManager.START_WPS: 7913 WpsInfo wpsInfo = (WpsInfo) message.obj; 7914 WpsResult wpsResult; 7915 switch (wpsInfo.setup) { 7916 case WpsInfo.PBC: 7917 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7918 break; 7919 case WpsInfo.KEYPAD: 7920 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7921 break; 7922 case WpsInfo.DISPLAY: 7923 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7924 break; 7925 default: 7926 wpsResult = new WpsResult(Status.FAILURE); 7927 loge("Invalid setup for WPS"); 7928 break; 7929 } 7930 mWifiConfigStore.setLastSelectedConfiguration 7931 (WifiConfiguration.INVALID_NETWORK_ID); 7932 if (wpsResult.status == Status.SUCCESS) { 7933 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7934 transitionTo(mWpsRunningState); 7935 } else { 7936 loge("Failed to start WPS with config " + wpsInfo.toString()); 7937 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7938 } 7939 break; 7940 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7941 if (DBG) log("Network connection established"); 7942 mLastNetworkId = message.arg1; 7943 mLastBssid = (String) message.obj; 7944 7945 mWifiInfo.setBSSID(mLastBssid); 7946 mWifiInfo.setNetworkId(mLastNetworkId); 7947 7948 sendNetworkStateChangeBroadcast(mLastBssid); 7949 transitionTo(mObtainingIpState); 7950 break; 7951 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7952 // Calling handleNetworkDisconnect here is redundant because we might already 7953 // have called it when leaving L2ConnectedState to go to disconnecting state 7954 // or thru other path 7955 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7956 // if they are valid, and only in this case call handleNEtworkDisconnect, 7957 // TODO: this should be fixed for a L MR release 7958 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7959 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7960 // at the chip etc... 7961 if (DBG) log("ConnectModeState: Network connection lost "); 7962 handleNetworkDisconnect(); 7963 transitionTo(mDisconnectedState); 7964 break; 7965 case CMD_PNO_NETWORK_FOUND: 7966 processPnoNetworkFound((ScanResult[])message.obj); 7967 break; 7968 default: 7969 return NOT_HANDLED; 7970 } 7971 return HANDLED; 7972 } 7973 } 7974 7975 private void updateCapabilities(WifiConfiguration config) { 7976 if (config != null) { 7977 if (config.ephemeral) { 7978 mNetworkCapabilities.removeCapability( 7979 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7980 } else { 7981 mNetworkCapabilities.addCapability( 7982 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7983 } 7984 } 7985 mNetworkCapabilities.setSignalStrength(mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI ? 7986 mWifiInfo.getRssi() : NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); 7987 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7988 } 7989 7990 private class WifiNetworkAgent extends NetworkAgent { 7991 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7992 NetworkCapabilities nc, LinkProperties lp, int score) { 7993 super(l, c, TAG, ni, nc, lp, score); 7994 } 7995 protected void unwanted() { 7996 // Ignore if we're not the current networkAgent. 7997 if (this != mNetworkAgent) return; 7998 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7999 + Integer.toString(mWifiInfo.score)); 8000 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); 8001 } 8002 8003 @Override 8004 protected void networkStatus(int status) { 8005 if (this != mNetworkAgent) return; 8006 if (status == NetworkAgent.INVALID_NETWORK) { 8007 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 8008 + Integer.toString(mWifiInfo.score)); 8009 unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); 8010 } else if (status == NetworkAgent.VALID_NETWORK) { 8011 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 8012 + Integer.toString(mWifiInfo.score)); 8013 doNetworkStatus(status); 8014 } 8015 } 8016 8017 @Override 8018 protected void saveAcceptUnvalidated(boolean accept) { 8019 if (this != mNetworkAgent) return; 8020 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 8021 } 8022 8023 @Override 8024 protected void startPacketKeepalive(Message msg) { 8025 WifiStateMachine.this.sendMessage( 8026 CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 8027 } 8028 8029 @Override 8030 protected void stopPacketKeepalive(Message msg) { 8031 WifiStateMachine.this.sendMessage( 8032 CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj); 8033 } 8034 8035 @Override 8036 protected void setSignalStrengthThresholds(int[] thresholds) { 8037 // 0. If there are no thresholds, or if the thresholds are invalid, stop RSSI monitoring. 8038 // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and 8039 // MAX_VALUE at the start/end of the thresholds array if necessary. 8040 // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware 8041 // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then 8042 // re-arm the hardware event. This needs to be done on the state machine thread to 8043 // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one 8044 // sent in the NetworkCapabilities) must be the one received from the hardware event 8045 // received, or we might skip callbacks. 8046 // 3. Ensure that when we disconnect, RSSI monitoring is stopped. 8047 log("Received signal strength thresholds: " + Arrays.toString(thresholds)); 8048 if (thresholds.length == 0) { 8049 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8050 mWifiInfo.getRssi()); 8051 return; 8052 } 8053 int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); 8054 rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; 8055 rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; 8056 Arrays.sort(rssiVals); 8057 byte[] rssiRange = new byte[rssiVals.length]; 8058 for (int i = 0; i < rssiVals.length; i++) { 8059 int val = rssiVals[i]; 8060 if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { 8061 rssiRange[i] = (byte) val; 8062 } else { 8063 Log.e(TAG, "Illegal value " + val + " for RSSI thresholds: " 8064 + Arrays.toString(rssiVals)); 8065 WifiStateMachine.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, 8066 mWifiInfo.getRssi()); 8067 return; 8068 } 8069 } 8070 // TODO: Do we quash rssi values in this sorted array which are very close? 8071 mRssiRanges = rssiRange; 8072 WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, 8073 mWifiInfo.getRssi()); 8074 } 8075 8076 @Override 8077 protected void preventAutomaticReconnect() { 8078 if (this != mNetworkAgent) return; 8079 unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); 8080 } 8081 } 8082 8083 void unwantedNetwork(int reason) { 8084 sendMessage(CMD_UNWANTED_NETWORK, reason); 8085 } 8086 8087 void doNetworkStatus(int status) { 8088 sendMessage(CMD_NETWORK_STATUS, status); 8089 } 8090 8091 // rfc4186 & rfc4187: 8092 // create Permanent Identity base on IMSI, 8093 // identity = usernam@realm 8094 // with username = prefix | IMSI 8095 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 8096 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 8097 String mcc; 8098 String mnc; 8099 String prefix; 8100 8101 if (imsi == null || imsi.isEmpty()) 8102 return ""; 8103 8104 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 8105 prefix = "1"; 8106 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 8107 prefix = "0"; 8108 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 8109 prefix = "6"; 8110 else // not a valide EapMethod 8111 return ""; 8112 8113 /* extract mcc & mnc from mccMnc */ 8114 if (mccMnc != null && !mccMnc.isEmpty()) { 8115 mcc = mccMnc.substring(0, 3); 8116 mnc = mccMnc.substring(3); 8117 if (mnc.length() == 2) 8118 mnc = "0" + mnc; 8119 } else { 8120 // extract mcc & mnc from IMSI, assume mnc size is 3 8121 mcc = imsi.substring(0, 3); 8122 mnc = imsi.substring(3, 6); 8123 } 8124 8125 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 8126 } 8127 8128 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 8129 if (config == null) 8130 return false; 8131 8132 // We are still seeing a fairly high power consumption triggered by autojoin scans 8133 // Hence do partial scans only for PSK configuration that are roamable since the 8134 // primary purpose of the partial scans is roaming. 8135 // Full badn scans with exponential backoff for the purpose or extended roaming and 8136 // network switching are performed unconditionally. 8137 ScanDetailCache scanDetailCache = 8138 mWifiConfigStore.getScanDetailCache(config); 8139 if (scanDetailCache == null 8140 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 8141 || scanDetailCache.size() > 6) { 8142 //return true but to not trigger the scan 8143 return true; 8144 } 8145 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 8146 ONE_HOUR_MILLI, restrictChannelList); 8147 if (channels != null && channels.size() != 0) { 8148 StringBuilder freqs = new StringBuilder(); 8149 boolean first = true; 8150 for (Integer channel : channels) { 8151 if (!first) 8152 freqs.append(","); 8153 freqs.append(channel.toString()); 8154 first = false; 8155 } 8156 //if (DBG) { 8157 logd("starting scan for " + config.configKey() + " with " + freqs); 8158 //} 8159 // Call wifi native to start the scan 8160 if (startScanNative( 8161 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 8162 freqs.toString())) { 8163 // Only count battery consumption if scan request is accepted 8164 noteScanStart(SCAN_ALARM_SOURCE, null); 8165 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 8166 } else { 8167 // used for debug only, mark scan as failed 8168 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8169 } 8170 return true; 8171 } else { 8172 if (DBG) logd("no channels for " + config.configKey()); 8173 return false; 8174 } 8175 } 8176 8177 void clearCurrentConfigBSSID(String dbg) { 8178 // Clear the bssid in the current config's network block 8179 WifiConfiguration config = getCurrentWifiConfiguration(); 8180 if (config == null) 8181 return; 8182 clearConfigBSSID(config, dbg); 8183 } 8184 void clearConfigBSSID(WifiConfiguration config, String dbg) { 8185 if (config == null) 8186 return; 8187 if (DBG) { 8188 logd(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 8189 + " config.bssid " + config.BSSID); 8190 } 8191 config.autoJoinBSSID = "any"; 8192 config.BSSID = "any"; 8193 if (DBG) { 8194 logd(dbg + " " + config.SSID 8195 + " nid=" + Integer.toString(config.networkId)); 8196 } 8197 mWifiConfigStore.saveWifiConfigBSSID(config); 8198 } 8199 8200 class L2ConnectedState extends State { 8201 @Override 8202 public void enter() { 8203 mRssiPollToken++; 8204 if (mEnableRssiPolling) { 8205 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 8206 } 8207 if (mNetworkAgent != null) { 8208 loge("Have NetworkAgent when entering L2Connected"); 8209 setNetworkDetailedState(DetailedState.DISCONNECTED); 8210 } 8211 setNetworkDetailedState(DetailedState.CONNECTING); 8212 8213 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 8214 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 8215 } 8216 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 8217 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 8218 mLinkProperties, 60); 8219 8220 // We must clear the config BSSID, as the wifi chipset may decide to roam 8221 // from this point on and having the BSSID specified in the network block would 8222 // cause the roam to faile and the device to disconnect 8223 clearCurrentConfigBSSID("L2ConnectedState"); 8224 8225 try { 8226 mIpReachabilityMonitor = new IpReachabilityMonitor( 8227 mContext, 8228 mInterfaceName, 8229 new IpReachabilityMonitor.Callback() { 8230 @Override 8231 public void notifyLost(InetAddress ip, String logMsg) { 8232 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 8233 } 8234 }); 8235 } catch (IllegalArgumentException e) { 8236 Log.wtf("Failed to create IpReachabilityMonitor", e); 8237 } 8238 } 8239 8240 @Override 8241 public void exit() { 8242 if (mIpReachabilityMonitor != null) { 8243 mIpReachabilityMonitor.stop(); 8244 mIpReachabilityMonitor = null; 8245 } 8246 8247 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 8248 // Bug: 15347363 8249 // For paranoia's sake, call handleNetworkDisconnect 8250 // only if BSSID is null or last networkId 8251 // is not invalid. 8252 if (DBG) { 8253 StringBuilder sb = new StringBuilder(); 8254 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 8255 if (mLastBssid !=null) { 8256 sb.append(" ").append(mLastBssid); 8257 } 8258 } 8259 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8260 handleNetworkDisconnect(); 8261 } 8262 } 8263 8264 @Override 8265 public boolean processMessage(Message message) { 8266 logStateAndMessage(message, this); 8267 8268 switch (message.what) { 8269 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 8270 handlePreDhcpSetup(); 8271 break; 8272 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 8273 handlePostDhcpSetup(); 8274 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 8275 if (DBG) log("DHCP successful"); 8276 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 8277 // We advance to mConnectedState because handleIPv4Success will call 8278 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 8279 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 8280 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 8281 if (DBG) { 8282 int count = -1; 8283 WifiConfiguration config = getCurrentWifiConfiguration(); 8284 if (config != null) { 8285 count = config.numConnectionFailures; 8286 } 8287 log("DHCP failure count=" + count); 8288 } 8289 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 8290 // As above, we transition to mDisconnectingState via updateLinkProperties. 8291 } 8292 break; 8293 case CMD_IP_CONFIGURATION_SUCCESSFUL: 8294 handleSuccessfulIpConfiguration(); 8295 sendConnectedState(); 8296 transitionTo(mConnectedState); 8297 break; 8298 case CMD_IP_CONFIGURATION_LOST: 8299 // Get Link layer stats so that we get fresh tx packet counters. 8300 getWifiLinkLayerStats(true); 8301 handleIpConfigurationLost(); 8302 transitionTo(mDisconnectingState); 8303 break; 8304 case CMD_IP_REACHABILITY_LOST: 8305 if (DBG && message.obj != null) log((String) message.obj); 8306 handleIpReachabilityLost(); 8307 transitionTo(mDisconnectingState); 8308 break; 8309 case CMD_DISCONNECT: 8310 mWifiNative.disconnect(); 8311 transitionTo(mDisconnectingState); 8312 break; 8313 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 8314 if (message.arg1 == 1) { 8315 mWifiNative.disconnect(); 8316 mTemporarilyDisconnectWifi = true; 8317 transitionTo(mDisconnectingState); 8318 } 8319 break; 8320 case CMD_SET_OPERATIONAL_MODE: 8321 if (message.arg1 != CONNECT_MODE) { 8322 sendMessage(CMD_DISCONNECT); 8323 deferMessage(message); 8324 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8325 noteWifiDisabledWhileAssociated(); 8326 } 8327 } 8328 mWifiConfigStore. 8329 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8330 break; 8331 case CMD_SET_COUNTRY_CODE: 8332 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8333 deferMessage(message); 8334 break; 8335 case CMD_START_SCAN: 8336 if (DBG) { 8337 logd("CMD_START_SCAN source " + message.arg1 8338 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 8339 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 8340 + " targetRoamBSSID=" + mTargetRoamBSSID 8341 + " RSSI=" + mWifiInfo.getRssi()); 8342 } 8343 if (message.arg1 == SCAN_ALARM_SOURCE) { 8344 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8345 // not be processed) and restart the scan if neede 8346 if (!getEnableAutoJoinWhenAssociated()) { 8347 return HANDLED; 8348 } 8349 boolean shouldScan = mScreenOn; 8350 8351 if (!checkAndRestartDelayedScan(message.arg2, 8352 shouldScan, 8353 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8354 null, null)) { 8355 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8356 logd("L2Connected CMD_START_SCAN source " 8357 + message.arg1 8358 + " " + message.arg2 + ", " + mDelayedScanCounter 8359 + " -> obsolete"); 8360 return HANDLED; 8361 } 8362 if (mP2pConnected.get()) { 8363 logd("L2Connected CMD_START_SCAN source " 8364 + message.arg1 8365 + " " + message.arg2 + ", " + mDelayedScanCounter 8366 + " ignore because P2P is connected"); 8367 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8368 return HANDLED; 8369 } 8370 boolean tryFullBandScan = false; 8371 boolean restrictChannelList = false; 8372 long now_ms = System.currentTimeMillis(); 8373 if (DBG) { 8374 logd("CMD_START_SCAN with age=" 8375 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8376 + " interval=" + fullBandConnectedTimeIntervalMilli 8377 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8378 } 8379 if (mWifiInfo != null) { 8380 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 8381 (now_ms - lastFullBandConnectedTimeMilli) 8382 > fullBandConnectedTimeIntervalMilli) { 8383 if (DBG) { 8384 logd("CMD_START_SCAN try full band scan age=" 8385 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 8386 + " interval=" + fullBandConnectedTimeIntervalMilli 8387 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 8388 } 8389 tryFullBandScan = true; 8390 } 8391 8392 if (mWifiInfo.txSuccessRate > 8393 mWifiConfigStore.maxTxPacketForFullScans 8394 || mWifiInfo.rxSuccessRate > 8395 mWifiConfigStore.maxRxPacketForFullScans) { 8396 // Too much traffic at the interface, hence no full band scan 8397 if (DBG) { 8398 logd("CMD_START_SCAN " + 8399 "prevent full band scan due to pkt rate"); 8400 } 8401 tryFullBandScan = false; 8402 } 8403 8404 if (mWifiInfo.txSuccessRate > 8405 mWifiConfigStore.maxTxPacketForPartialScans 8406 || mWifiInfo.rxSuccessRate > 8407 mWifiConfigStore.maxRxPacketForPartialScans) { 8408 // Don't scan if lots of packets are being sent 8409 restrictChannelList = true; 8410 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 8411 if (DBG) { 8412 logd("CMD_START_SCAN source " + message.arg1 8413 + " ...and ignore scans" 8414 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 8415 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 8416 } 8417 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8418 return HANDLED; 8419 } 8420 } 8421 } 8422 8423 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 8424 if (DBG) { 8425 logd("CMD_START_SCAN full=" + 8426 tryFullBandScan); 8427 } 8428 if (currentConfiguration != null) { 8429 if (fullBandConnectedTimeIntervalMilli 8430 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 8431 // Sanity 8432 fullBandConnectedTimeIntervalMilli 8433 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 8434 } 8435 if (tryFullBandScan) { 8436 lastFullBandConnectedTimeMilli = now_ms; 8437 if (fullBandConnectedTimeIntervalMilli 8438 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8439 // Increase the interval 8440 fullBandConnectedTimeIntervalMilli 8441 = fullBandConnectedTimeIntervalMilli 8442 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8443 8444 if (DBG) { 8445 logd("CMD_START_SCAN bump interval =" 8446 + fullBandConnectedTimeIntervalMilli); 8447 } 8448 } 8449 handleScanRequest( 8450 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8451 } else { 8452 if (!startScanForConfiguration( 8453 currentConfiguration, restrictChannelList)) { 8454 if (DBG) { 8455 logd("starting scan, " + 8456 " did not find channels -> full"); 8457 } 8458 lastFullBandConnectedTimeMilli = now_ms; 8459 if (fullBandConnectedTimeIntervalMilli 8460 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 8461 // Increase the interval 8462 fullBandConnectedTimeIntervalMilli 8463 = fullBandConnectedTimeIntervalMilli 8464 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 8465 8466 if (DBG) { 8467 logd("CMD_START_SCAN bump interval =" 8468 + fullBandConnectedTimeIntervalMilli); 8469 } 8470 } 8471 handleScanRequest( 8472 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8473 } 8474 } 8475 8476 } else { 8477 logd("CMD_START_SCAN : connected mode and no configuration"); 8478 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 8479 } 8480 } else { 8481 // Not scan alarm source 8482 return NOT_HANDLED; 8483 } 8484 break; 8485 /* Ignore connection to same network */ 8486 case WifiManager.CONNECT_NETWORK: 8487 int netId = message.arg1; 8488 if (mWifiInfo.getNetworkId() == netId) { 8489 break; 8490 } 8491 return NOT_HANDLED; 8492 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8493 mWifiInfo.setBSSID((String) message.obj); 8494 mLastNetworkId = message.arg1; 8495 mWifiInfo.setNetworkId(mLastNetworkId); 8496 if(!mLastBssid.equals((String) message.obj)) { 8497 mLastBssid = (String) message.obj; 8498 sendNetworkStateChangeBroadcast(mLastBssid); 8499 } 8500 break; 8501 case CMD_RSSI_POLL: 8502 if (message.arg1 == mRssiPollToken) { 8503 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 8504 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 8505 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 8506 if (stats != null) { 8507 // Sanity check the results provided by driver 8508 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 8509 && (stats.rssi_mgmt == 0 8510 || stats.beacon_rx == 0)) { 8511 stats = null; 8512 } 8513 } 8514 // Get Info and continue polling 8515 fetchRssiLinkSpeedAndFrequencyNative(); 8516 calculateWifiScore(stats); 8517 } 8518 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8519 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8520 8521 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 8522 } else { 8523 // Polling has completed 8524 } 8525 break; 8526 case CMD_ENABLE_RSSI_POLL: 8527 cleanWifiScore(); 8528 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 8529 mEnableRssiPolling = (message.arg1 == 1); 8530 } else { 8531 mEnableRssiPolling = false; 8532 } 8533 mRssiPollToken++; 8534 if (mEnableRssiPolling) { 8535 // First poll 8536 fetchRssiLinkSpeedAndFrequencyNative(); 8537 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 8538 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 8539 } 8540 break; 8541 case WifiManager.RSSI_PKTCNT_FETCH: 8542 RssiPacketCountInfo info = new RssiPacketCountInfo(); 8543 fetchRssiLinkSpeedAndFrequencyNative(); 8544 info.rssi = mWifiInfo.getRssi(); 8545 fetchPktcntNative(info); 8546 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 8547 break; 8548 case CMD_DELAYED_NETWORK_DISCONNECT: 8549 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 8550 8551 // Ignore if we are not debouncing 8552 logd("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 8553 + message.arg1); 8554 return HANDLED; 8555 } else { 8556 logd("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 8557 + message.arg1); 8558 8559 linkDebouncing = false; 8560 // If we are still debouncing while this message comes, 8561 // it means we were not able to reconnect within the alloted time 8562 // = LINK_FLAPPING_DEBOUNCE_MSEC 8563 // and thus, trigger a real disconnect 8564 handleNetworkDisconnect(); 8565 transitionTo(mDisconnectedState); 8566 } 8567 break; 8568 case CMD_ASSOCIATED_BSSID: 8569 if ((String) message.obj == null) { 8570 logw("Associated command w/o BSSID"); 8571 break; 8572 } 8573 mLastBssid = (String) message.obj; 8574 if (mLastBssid != null 8575 && (mWifiInfo.getBSSID() == null 8576 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 8577 mWifiInfo.setBSSID((String) message.obj); 8578 sendNetworkStateChangeBroadcast(mLastBssid); 8579 } 8580 break; 8581 case CMD_START_RSSI_MONITORING_OFFLOAD: 8582 case CMD_RSSI_THRESHOLD_BREACH: 8583 byte currRssi = (byte) message.arg1; 8584 processRssiThreshold(currRssi, message.what); 8585 break; 8586 case CMD_STOP_RSSI_MONITORING_OFFLOAD: 8587 stopRssiMonitoringOffload(); 8588 break; 8589 case CMD_RESET_SIM_NETWORKS: 8590 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 8591 WifiConfiguration config = 8592 mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 8593 if (mWifiConfigStore.isSimConfig(config)) { 8594 mWifiNative.disconnect(); 8595 transitionTo(mDisconnectingState); 8596 } 8597 } 8598 /* allow parent state to reset data for other networks */ 8599 return NOT_HANDLED; 8600 default: 8601 return NOT_HANDLED; 8602 } 8603 8604 return HANDLED; 8605 } 8606 } 8607 8608 class ObtainingIpState extends State { 8609 @Override 8610 public void enter() { 8611 if (DBG) { 8612 String key = ""; 8613 if (getCurrentWifiConfiguration() != null) { 8614 key = getCurrentWifiConfiguration().configKey(); 8615 } 8616 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 8617 + " " + key + " " 8618 + " roam=" + mAutoRoaming 8619 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 8620 + " watchdog= " + obtainingIpWatchdogCount); 8621 } 8622 8623 // Reset link Debouncing, indicating we have successfully re-connected to the AP 8624 // We might still be roaming 8625 linkDebouncing = false; 8626 8627 // Send event to CM & network change broadcast 8628 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 8629 8630 // We must clear the config BSSID, as the wifi chipset may decide to roam 8631 // from this point on and having the BSSID specified in the network block would 8632 // cause the roam to faile and the device to disconnect 8633 clearCurrentConfigBSSID("ObtainingIpAddress"); 8634 8635 try { 8636 mNwService.enableIpv6(mInterfaceName); 8637 } catch (RemoteException re) { 8638 loge("Failed to enable IPv6: " + re); 8639 } catch (IllegalStateException e) { 8640 loge("Failed to enable IPv6: " + e); 8641 } 8642 8643 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 8644 if (isRoaming()) { 8645 renewDhcp(); 8646 } else { 8647 // Remove any IP address on the interface in case we're switching from static 8648 // IP configuration to DHCP. This is safe because if we get here when not 8649 // roaming, we don't have a usable address. 8650 clearIPv4Address(mInterfaceName); 8651 startDhcp(); 8652 } 8653 obtainingIpWatchdogCount++; 8654 logd("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 8655 // Get Link layer stats so as we get fresh tx packet counters 8656 getWifiLinkLayerStats(true); 8657 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 8658 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 8659 } else { 8660 // stop any running dhcp before assigning static IP 8661 stopDhcp(); 8662 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 8663 mLastNetworkId); 8664 if (config.ipAddress == null) { 8665 logd("Static IP lacks address"); 8666 sendMessage(CMD_STATIC_IP_FAILURE); 8667 } else { 8668 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 8669 ifcg.setLinkAddress(config.ipAddress); 8670 ifcg.setInterfaceUp(); 8671 try { 8672 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 8673 if (DBG) log("Static IP configuration succeeded"); 8674 DhcpResults dhcpResults = new DhcpResults(config); 8675 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 8676 } catch (RemoteException re) { 8677 loge("Static IP configuration failed: " + re); 8678 sendMessage(CMD_STATIC_IP_FAILURE); 8679 } catch (IllegalStateException e) { 8680 loge("Static IP configuration failed: " + e); 8681 sendMessage(CMD_STATIC_IP_FAILURE); 8682 } 8683 } 8684 } 8685 } 8686 @Override 8687 public boolean processMessage(Message message) { 8688 logStateAndMessage(message, this); 8689 8690 switch(message.what) { 8691 case CMD_STATIC_IP_SUCCESS: 8692 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 8693 break; 8694 case CMD_STATIC_IP_FAILURE: 8695 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 8696 break; 8697 case CMD_AUTO_CONNECT: 8698 case CMD_AUTO_ROAM: 8699 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8700 break; 8701 case WifiManager.SAVE_NETWORK: 8702 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 8703 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8704 deferMessage(message); 8705 break; 8706 /* Defer any power mode changes since we must keep active power mode at DHCP */ 8707 case CMD_SET_HIGH_PERF_MODE: 8708 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8709 deferMessage(message); 8710 break; 8711 /* Defer scan request since we should not switch to other channels at DHCP */ 8712 case CMD_START_SCAN: 8713 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 8714 deferMessage(message); 8715 break; 8716 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 8717 if (message.arg1 == obtainingIpWatchdogCount) { 8718 logd("ObtainingIpAddress: Watchdog Triggered, count=" 8719 + obtainingIpWatchdogCount); 8720 handleIpConfigurationLost(); 8721 transitionTo(mDisconnectingState); 8722 break; 8723 } 8724 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8725 break; 8726 default: 8727 return NOT_HANDLED; 8728 } 8729 return HANDLED; 8730 } 8731 } 8732 8733 // Note: currently, this state is never used, because WifiWatchdogStateMachine unconditionally 8734 // sets mPoorNetworkDetectionEnabled to false. 8735 class VerifyingLinkState extends State { 8736 @Override 8737 public void enter() { 8738 log(getName() + " enter"); 8739 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 8740 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 8741 sendNetworkStateChangeBroadcast(mLastBssid); 8742 // End roaming 8743 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8744 } 8745 @Override 8746 public boolean processMessage(Message message) { 8747 logStateAndMessage(message, this); 8748 8749 switch (message.what) { 8750 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8751 // Stay here 8752 log(getName() + " POOR_LINK_DETECTED: no transition"); 8753 break; 8754 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 8755 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 8756 sendConnectedState(); 8757 transitionTo(mConnectedState); 8758 break; 8759 default: 8760 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 8761 return NOT_HANDLED; 8762 } 8763 return HANDLED; 8764 } 8765 } 8766 8767 private void sendConnectedState() { 8768 // If this network was explicitly selected by the user, evaluate whether to call 8769 // explicitlySelected() so the system can treat it appropriately. 8770 WifiConfiguration config = getCurrentWifiConfiguration(); 8771 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 8772 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 8773 if (DBG) { 8774 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 8775 } 8776 if (prompt) { 8777 // Selected by the user via Settings or QuickSettings. If this network has Internet 8778 // access, switch to it. Otherwise, switch to it only if the user confirms that they 8779 // really want to switch, or has already confirmed and selected "Don't ask again". 8780 if (DBG) { 8781 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 8782 } 8783 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 8784 } 8785 } 8786 8787 setNetworkDetailedState(DetailedState.CONNECTED); 8788 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8789 sendNetworkStateChangeBroadcast(mLastBssid); 8790 } 8791 8792 class RoamingState extends State { 8793 boolean mAssociated; 8794 @Override 8795 public void enter() { 8796 if (DBG) { 8797 log("RoamingState Enter" 8798 + " mScreenOn=" + mScreenOn ); 8799 } 8800 setScanAlarm(false); 8801 8802 // Make sure we disconnect if roaming fails 8803 roamWatchdogCount++; 8804 logd("Start Roam Watchdog " + roamWatchdogCount); 8805 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8806 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8807 mAssociated = false; 8808 } 8809 @Override 8810 public boolean processMessage(Message message) { 8811 logStateAndMessage(message, this); 8812 WifiConfiguration config; 8813 switch (message.what) { 8814 case CMD_IP_CONFIGURATION_LOST: 8815 config = getCurrentWifiConfiguration(); 8816 if (config != null) { 8817 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8818 mWifiConfigStore.noteRoamingFailure(config, 8819 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8820 } 8821 return NOT_HANDLED; 8822 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8823 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8824 return HANDLED; 8825 case CMD_UNWANTED_NETWORK: 8826 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8827 return HANDLED; 8828 case CMD_SET_OPERATIONAL_MODE: 8829 if (message.arg1 != CONNECT_MODE) { 8830 deferMessage(message); 8831 } 8832 break; 8833 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8834 /** 8835 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8836 * before NETWORK_DISCONNECTION_EVENT 8837 * And there is an associated BSSID corresponding to our target BSSID, then 8838 * we have missed the network disconnection, transition to mDisconnectedState 8839 * and handle the rest of the events there. 8840 */ 8841 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8842 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8843 || stateChangeResult.state == SupplicantState.INACTIVE 8844 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8845 if (DBG) { 8846 log("STATE_CHANGE_EVENT in roaming state " 8847 + stateChangeResult.toString() ); 8848 } 8849 if (stateChangeResult.BSSID != null 8850 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8851 handleNetworkDisconnect(); 8852 transitionTo(mDisconnectedState); 8853 } 8854 } 8855 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8856 // We completed the layer2 roaming part 8857 mAssociated = true; 8858 if (stateChangeResult.BSSID != null) { 8859 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8860 } 8861 } 8862 break; 8863 case CMD_ROAM_WATCHDOG_TIMER: 8864 if (roamWatchdogCount == message.arg1) { 8865 if (DBG) log("roaming watchdog! -> disconnect"); 8866 mRoamFailCount++; 8867 handleNetworkDisconnect(); 8868 mWifiNative.disconnect(); 8869 transitionTo(mDisconnectedState); 8870 } 8871 break; 8872 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8873 if (mAssociated) { 8874 if (DBG) log("roaming and Network connection established"); 8875 mLastNetworkId = message.arg1; 8876 mLastBssid = (String) message.obj; 8877 mWifiInfo.setBSSID(mLastBssid); 8878 mWifiInfo.setNetworkId(mLastNetworkId); 8879 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8880 sendNetworkStateChangeBroadcast(mLastBssid); 8881 transitionTo(mObtainingIpState); 8882 } else { 8883 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8884 } 8885 break; 8886 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8887 // Throw away but only if it corresponds to the network we're roaming to 8888 String bssid = (String)message.obj; 8889 if (true) { 8890 String target = ""; 8891 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8892 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8893 + " BSSID=" + bssid 8894 + " target=" + target); 8895 } 8896 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8897 handleNetworkDisconnect(); 8898 transitionTo(mDisconnectedState); 8899 } 8900 break; 8901 case WifiMonitor.SSID_TEMP_DISABLED: 8902 // Auth error while roaming 8903 logd("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8904 + " id=" + Integer.toString(message.arg1) 8905 + " isRoaming=" + isRoaming() 8906 + " roam=" + Integer.toString(mAutoRoaming)); 8907 if (message.arg1 == mLastNetworkId) { 8908 config = getCurrentWifiConfiguration(); 8909 if (config != null) { 8910 mWifiLogger.captureBugReportData( 8911 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8912 mWifiConfigStore.noteRoamingFailure(config, 8913 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8914 } 8915 handleNetworkDisconnect(); 8916 transitionTo(mDisconnectingState); 8917 } 8918 return NOT_HANDLED; 8919 case CMD_START_SCAN: 8920 deferMessage(message); 8921 break; 8922 default: 8923 return NOT_HANDLED; 8924 } 8925 return HANDLED; 8926 } 8927 8928 @Override 8929 public void exit() { 8930 logd("WifiStateMachine: Leaving Roaming state"); 8931 } 8932 } 8933 8934 class ConnectedState extends State { 8935 @Override 8936 public void enter() { 8937 String address; 8938 updateDefaultRouteMacAddress(1000); 8939 if (DBG) { 8940 log("Enter ConnectedState " 8941 + " mScreenOn=" + mScreenOn 8942 + " scanperiod=" 8943 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8944 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8945 + mWifiConfigStore.enableHalBasedPno.get() 8946 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8947 } 8948 if (mScreenOn 8949 && getEnableAutoJoinWhenAssociated()) { 8950 if (useHalBasedAutoJoinOffload()) { 8951 startGScanConnectedModeOffload("connectedEnter"); 8952 } else { 8953 // restart scan alarm 8954 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8955 null, null); 8956 } 8957 } 8958 registerConnected(); 8959 lastConnectAttemptTimestamp = 0; 8960 targetWificonfiguration = null; 8961 // Paranoia 8962 linkDebouncing = false; 8963 8964 // Not roaming anymore 8965 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8966 8967 if (testNetworkDisconnect) { 8968 testNetworkDisconnectCounter++; 8969 logd("ConnectedState Enter start disconnect test " + 8970 testNetworkDisconnectCounter); 8971 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8972 testNetworkDisconnectCounter, 0), 15000); 8973 } 8974 8975 // Reenable all networks, allow for hidden networks to be scanned 8976 mWifiConfigStore.enableAllNetworks(); 8977 8978 mLastDriverRoamAttempt = 0; 8979 8980 //startLazyRoam(); 8981 } 8982 @Override 8983 public boolean processMessage(Message message) { 8984 WifiConfiguration config = null; 8985 logStateAndMessage(message, this); 8986 8987 switch (message.what) { 8988 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8989 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8990 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8991 return HANDLED; 8992 } 8993 /* If we are still in Disconnected state after having discovered a valid 8994 * network this means autojoin didnt managed to associate to the network, 8995 * then restart PNO so as we will try associating to it again. 8996 */ 8997 if (useHalBasedAutoJoinOffload()) { 8998 if (mGScanStartTimeMilli == 0) { 8999 // If offload is not started, then start it... 9000 startGScanConnectedModeOffload("connectedRestart"); 9001 } else { 9002 // If offload is already started, then check if we need to increase 9003 // the scan period and restart the Gscan 9004 long now = System.currentTimeMillis(); 9005 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9006 && ((now - mGScanStartTimeMilli) 9007 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9008 && (mGScanPeriodMilli 9009 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9010 { 9011 startConnectedGScan("Connected restart gscan"); 9012 } 9013 } 9014 } 9015 break; 9016 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 9017 updateAssociatedScanPermission(); 9018 break; 9019 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 9020 if (DBG) log("Watchdog reports poor link"); 9021 transitionTo(mVerifyingLinkState); 9022 break; 9023 case CMD_UNWANTED_NETWORK: 9024 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { 9025 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 9026 mWifiNative.disconnect(); 9027 transitionTo(mDisconnectingState); 9028 } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || 9029 message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { 9030 config = getCurrentWifiConfiguration(); 9031 if (config != null) { 9032 // Disable autojoin 9033 if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { 9034 config.validatedInternetAccess = false; 9035 // Clear last-selected status, as being last-selected also avoids 9036 // disabling auto-join. 9037 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 9038 mWifiConfigStore.setLastSelectedConfiguration( 9039 WifiConfiguration.INVALID_NETWORK_ID); 9040 } 9041 } 9042 config.numNoInternetAccessReports += 1; 9043 config.dirty = true; 9044 mWifiConfigStore.writeKnownNetworkHistory(false); 9045 } 9046 } 9047 return HANDLED; 9048 case CMD_NETWORK_STATUS: 9049 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 9050 config = getCurrentWifiConfiguration(); 9051 if (config != null) { 9052 if (!config.validatedInternetAccess 9053 || config.numNoInternetAccessReports != 0) { 9054 config.dirty = true; 9055 } 9056 // re-enable autojoin 9057 config.numNoInternetAccessReports = 0; 9058 config.validatedInternetAccess = true; 9059 mWifiConfigStore.writeKnownNetworkHistory(false); 9060 } 9061 } 9062 return HANDLED; 9063 case CMD_ACCEPT_UNVALIDATED: 9064 boolean accept = (message.arg1 != 0); 9065 config = getCurrentWifiConfiguration(); 9066 if (config != null) { 9067 config.noInternetAccessExpected = accept; 9068 } 9069 return HANDLED; 9070 case CMD_TEST_NETWORK_DISCONNECT: 9071 // Force a disconnect 9072 if (message.arg1 == testNetworkDisconnectCounter) { 9073 mWifiNative.disconnect(); 9074 } 9075 break; 9076 case CMD_ASSOCIATED_BSSID: 9077 // ASSOCIATING to a new BSSID while already connected, indicates 9078 // that driver is roaming 9079 mLastDriverRoamAttempt = System.currentTimeMillis(); 9080 String toBSSID = (String)message.obj; 9081 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 9082 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 9083 } 9084 return NOT_HANDLED; 9085 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9086 long lastRoam = 0; 9087 if (mLastDriverRoamAttempt != 0) { 9088 // Calculate time since last driver roam attempt 9089 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 9090 mLastDriverRoamAttempt = 0; 9091 } 9092 if (unexpectedDisconnectedReason(message.arg2)) { 9093 mWifiLogger.captureBugReportData( 9094 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 9095 } 9096 config = getCurrentWifiConfiguration(); 9097 if (mScreenOn 9098 && !linkDebouncing 9099 && config != null 9100 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 9101 && !mWifiConfigStore.isLastSelectedConfiguration(config) 9102 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 9103 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 9104 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 9105 && mWifiInfo.getRssi() > 9106 WifiConfiguration.BAD_RSSI_24) 9107 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 9108 && mWifiInfo.getRssi() > 9109 WifiConfiguration.BAD_RSSI_5))) { 9110 // Start de-bouncing the L2 disconnection: 9111 // this L2 disconnection might be spurious. 9112 // Hence we allow 7 seconds for the state machine to try 9113 // to reconnect, go thru the 9114 // roaming cycle and enter Obtaining IP address 9115 // before signalling the disconnect to ConnectivityService and L3 9116 startScanForConfiguration(getCurrentWifiConfiguration(), false); 9117 linkDebouncing = true; 9118 9119 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 9120 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 9121 if (DBG) { 9122 log("NETWORK_DISCONNECTION_EVENT in connected state" 9123 + " BSSID=" + mWifiInfo.getBSSID() 9124 + " RSSI=" + mWifiInfo.getRssi() 9125 + " freq=" + mWifiInfo.getFrequency() 9126 + " reason=" + message.arg2 9127 + " -> debounce"); 9128 } 9129 return HANDLED; 9130 } else { 9131 if (DBG) { 9132 int ajst = -1; 9133 if (config != null) ajst = config.autoJoinStatus; 9134 log("NETWORK_DISCONNECTION_EVENT in connected state" 9135 + " BSSID=" + mWifiInfo.getBSSID() 9136 + " RSSI=" + mWifiInfo.getRssi() 9137 + " freq=" + mWifiInfo.getFrequency() 9138 + " was debouncing=" + linkDebouncing 9139 + " reason=" + message.arg2 9140 + " ajst=" + ajst); 9141 } 9142 } 9143 break; 9144 case CMD_AUTO_ROAM: 9145 // Clear the driver roam indication since we are attempting a framework roam 9146 mLastDriverRoamAttempt = 0; 9147 9148 /* Connect command coming from auto-join */ 9149 ScanResult candidate = (ScanResult)message.obj; 9150 String bssid = "any"; 9151 if (candidate != null && candidate.is5GHz()) { 9152 // Only lock BSSID for 5GHz networks 9153 bssid = candidate.BSSID; 9154 } 9155 int netId = mLastNetworkId; 9156 config = getCurrentWifiConfiguration(); 9157 9158 9159 if (config == null) { 9160 loge("AUTO_ROAM and no config, bail out..."); 9161 break; 9162 } 9163 9164 logd("CMD_AUTO_ROAM sup state " 9165 + mSupplicantStateTracker.getSupplicantStateName() 9166 + " my state " + getCurrentState().getName() 9167 + " nid=" + Integer.toString(netId) 9168 + " config " + config.configKey() 9169 + " roam=" + Integer.toString(message.arg2) 9170 + " to " + bssid 9171 + " targetRoamBSSID " + mTargetRoamBSSID); 9172 9173 /* Save the BSSID so as to lock it @ firmware */ 9174 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 9175 logd("AUTO_ROAM nothing to do"); 9176 // Same BSSID, nothing to do 9177 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9178 break; 9179 }; 9180 9181 // Make sure the network is enabled, since supplicant will not re-enable it 9182 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 9183 9184 if (deferForUserInput(message, netId, false)) { 9185 break; 9186 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 9187 WifiConfiguration.USER_BANNED) { 9188 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9189 WifiManager.NOT_AUTHORIZED); 9190 break; 9191 } 9192 9193 boolean ret = false; 9194 if (mLastNetworkId != netId) { 9195 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 9196 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 9197 ret = true; 9198 } 9199 } else { 9200 ret = mWifiNative.reassociate(); 9201 } 9202 if (ret) { 9203 lastConnectAttemptTimestamp = System.currentTimeMillis(); 9204 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 9205 9206 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 9207 mAutoRoaming = message.arg2; 9208 transitionTo(mRoamingState); 9209 9210 } else { 9211 loge("Failed to connect config: " + config + " netId: " + netId); 9212 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 9213 WifiManager.ERROR); 9214 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 9215 break; 9216 } 9217 break; 9218 case CMD_START_IP_PACKET_OFFLOAD: { 9219 int slot = message.arg1; 9220 int intervalSeconds = message.arg2; 9221 KeepalivePacketData pkt = (KeepalivePacketData) message.obj; 9222 byte[] dstMac; 9223 try { 9224 InetAddress gateway = RouteInfo.selectBestRoute( 9225 mLinkProperties.getRoutes(), pkt.dstAddress).getGateway(); 9226 String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); 9227 dstMac = macAddressFromString(dstMacStr); 9228 } catch (NullPointerException|IllegalArgumentException e) { 9229 loge("Can't find MAC address for next hop to " + pkt.dstAddress); 9230 mNetworkAgent.onPacketKeepaliveEvent(slot, 9231 ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS); 9232 break; 9233 } 9234 pkt.dstMac = dstMac; 9235 int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); 9236 mNetworkAgent.onPacketKeepaliveEvent(slot, result); 9237 break; 9238 } 9239 default: 9240 return NOT_HANDLED; 9241 } 9242 return HANDLED; 9243 } 9244 9245 @Override 9246 public void exit() { 9247 logd("WifiStateMachine: Leaving Connected state"); 9248 setScanAlarm(false); 9249 mLastDriverRoamAttempt = 0; 9250 9251 stopLazyRoam(); 9252 9253 mWhiteListedSsids = null; 9254 } 9255 } 9256 9257 class DisconnectingState extends State { 9258 9259 @Override 9260 public void enter() { 9261 9262 if (PDBG) { 9263 logd(" Enter DisconnectingState State scan interval " 9264 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9265 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9266 + " screenOn=" + mScreenOn); 9267 } 9268 9269 // Make sure we disconnect: we enter this state prior to connecting to a new 9270 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 9271 // event which in this case will be indicating that supplicant started to associate. 9272 // In some cases supplicant doesn't ignore the connect requests (it might not 9273 // find the target SSID in its cache), 9274 // Therefore we end up stuck that state, hence the need for the watchdog. 9275 disconnectingWatchdogCount++; 9276 logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 9277 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 9278 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 9279 } 9280 9281 @Override 9282 public boolean processMessage(Message message) { 9283 logStateAndMessage(message, this); 9284 switch (message.what) { 9285 case CMD_SET_OPERATIONAL_MODE: 9286 if (message.arg1 != CONNECT_MODE) { 9287 deferMessage(message); 9288 } 9289 break; 9290 case CMD_START_SCAN: 9291 deferMessage(message); 9292 return HANDLED; 9293 case CMD_DISCONNECTING_WATCHDOG_TIMER: 9294 if (disconnectingWatchdogCount == message.arg1) { 9295 if (DBG) log("disconnecting watchdog! -> disconnect"); 9296 handleNetworkDisconnect(); 9297 transitionTo(mDisconnectedState); 9298 } 9299 break; 9300 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9301 /** 9302 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 9303 * we have missed the network disconnection, transition to mDisconnectedState 9304 * and handle the rest of the events there 9305 */ 9306 deferMessage(message); 9307 handleNetworkDisconnect(); 9308 transitionTo(mDisconnectedState); 9309 break; 9310 default: 9311 return NOT_HANDLED; 9312 } 9313 return HANDLED; 9314 } 9315 } 9316 9317 class DisconnectedState extends State { 9318 @Override 9319 public void enter() { 9320 // We dont scan frequently if this is a temporary disconnect 9321 // due to p2p 9322 if (mTemporarilyDisconnectWifi) { 9323 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 9324 return; 9325 } 9326 9327 if (PDBG) { 9328 logd(" Enter DisconnectedState scan interval " 9329 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 9330 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 9331 + " screenOn=" + mScreenOn 9332 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 9333 + mWifiConfigStore.enableHalBasedPno.get()); 9334 } 9335 9336 /** clear the roaming state, if we were roaming, we failed */ 9337 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 9338 9339 if (useHalBasedAutoJoinOffload()) { 9340 startGScanDisconnectedModeOffload("disconnectedEnter"); 9341 } else { 9342 if (mScreenOn) { 9343 /** 9344 * screen lit and => start scan immediately 9345 */ 9346 startScan(UNKNOWN_SCAN_SOURCE, 0, null, null); 9347 } else { 9348 /** 9349 * screen dark and PNO supported => scan alarm disabled 9350 */ 9351 if (mBackgroundScanSupported) { 9352 /* If a regular scan result is pending, do not initiate background 9353 * scan until the scan results are returned. This is needed because 9354 * initiating a background scan will cancel the regular scan and 9355 * scan results will not be returned until background scanning is 9356 * cleared 9357 */ 9358 if (!mIsScanOngoing) { 9359 enableBackgroundScan(true); 9360 } 9361 } else { 9362 setScanAlarm(true); 9363 } 9364 } 9365 } 9366 9367 /** 9368 * If we have no networks saved, the supplicant stops doing the periodic scan. 9369 * The scans are useful to notify the user of the presence of an open network. 9370 * Note that these are not wake up scans. 9371 */ 9372 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 9373 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9374 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9375 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9376 } 9377 9378 mDisconnectedTimeStamp = System.currentTimeMillis(); 9379 mDisconnectedPnoAlarmCount = 0; 9380 } 9381 @Override 9382 public boolean processMessage(Message message) { 9383 boolean ret = HANDLED; 9384 9385 logStateAndMessage(message, this); 9386 9387 switch (message.what) { 9388 case CMD_NO_NETWORKS_PERIODIC_SCAN: 9389 if (mP2pConnected.get()) break; 9390 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 9391 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9392 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 9393 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9394 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9395 } 9396 break; 9397 case WifiManager.FORGET_NETWORK: 9398 case CMD_REMOVE_NETWORK: 9399 case CMD_REMOVE_APP_CONFIGURATIONS: 9400 case CMD_REMOVE_USER_CONFIGURATIONS: 9401 // Set up a delayed message here. After the forget/remove is handled 9402 // the handled delayed message will determine if there is a need to 9403 // scan and continue 9404 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9405 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9406 ret = NOT_HANDLED; 9407 break; 9408 case CMD_SET_OPERATIONAL_MODE: 9409 if (message.arg1 != CONNECT_MODE) { 9410 mOperationalMode = message.arg1; 9411 9412 mWifiConfigStore.disableAllNetworks(); 9413 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 9414 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 9415 setWifiState(WIFI_STATE_DISABLED); 9416 } 9417 transitionTo(mScanModeState); 9418 } 9419 mWifiConfigStore. 9420 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 9421 break; 9422 /* Ignore network disconnect */ 9423 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9424 break; 9425 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9426 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 9427 if (DBG) { 9428 logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 9429 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 9430 + " debouncing=" + linkDebouncing); 9431 } 9432 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 9433 /* ConnectModeState does the rest of the handling */ 9434 ret = NOT_HANDLED; 9435 break; 9436 case CMD_START_SCAN: 9437 if (!checkOrDeferScanAllowed(message)) { 9438 // The scan request was rescheduled 9439 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 9440 return HANDLED; 9441 } 9442 if (message.arg1 == SCAN_ALARM_SOURCE) { 9443 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 9444 // not be processed) and restart the scan 9445 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 9446 if (mP2pConnected.get()) { 9447 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 9448 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9449 period); 9450 } 9451 if (!checkAndRestartDelayedScan(message.arg2, 9452 true, period, null, null)) { 9453 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9454 logd("Disconnected CMD_START_SCAN source " 9455 + message.arg1 9456 + " " + message.arg2 + ", " + mDelayedScanCounter 9457 + " -> obsolete"); 9458 return HANDLED; 9459 } 9460 /* Disable background scan temporarily during a regular scan */ 9461 enableBackgroundScan(false); 9462 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 9463 ret = HANDLED; 9464 } else { 9465 9466 /* 9467 * The SCAN request is not handled in this state and 9468 * would eventually might/will get handled in the 9469 * parent's state. The PNO, if already enabled had to 9470 * get disabled before the SCAN trigger. Hence, stop 9471 * the PNO if already enabled in this state, though the 9472 * SCAN request is not handled(PNO disable before the 9473 * SCAN trigger in any other state is not the right 9474 * place to issue). 9475 */ 9476 9477 enableBackgroundScan(false); 9478 ret = NOT_HANDLED; 9479 } 9480 break; 9481 case CMD_RESTART_AUTOJOIN_OFFLOAD: 9482 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 9483 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 9484 return HANDLED; 9485 } 9486 /* If we are still in Disconnected state after having discovered a valid 9487 * network this means autojoin didnt managed to associate to the network, 9488 * then restart PNO so as we will try associating to it again. 9489 */ 9490 if (useHalBasedAutoJoinOffload()) { 9491 if (mGScanStartTimeMilli == 0) { 9492 // If offload is not started, then start it... 9493 startGScanDisconnectedModeOffload("disconnectedRestart"); 9494 } else { 9495 // If offload is already started, then check if we need to increase 9496 // the scan period and restart the Gscan 9497 long now = System.currentTimeMillis(); 9498 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 9499 && ((now - mGScanStartTimeMilli) 9500 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 9501 && (mGScanPeriodMilli 9502 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 9503 { 9504 startDisconnectedGScan("disconnected restart gscan"); 9505 } 9506 } 9507 } else { 9508 // If we are still disconnected for a short while after having found a 9509 // network thru PNO, then something went wrong, and for some reason we 9510 // couldn't join this network. 9511 // It might be due to a SW bug in supplicant or the wifi stack, or an 9512 // interoperability issue, or we try to join a bad bss and failed 9513 // In that case we want to restart pno so as to make sure that we will 9514 // attempt again to join that network. 9515 if (!mScreenOn && !mIsScanOngoing && mBackgroundScanSupported) { 9516 enableBackgroundScan(false); 9517 enableBackgroundScan(true); 9518 } 9519 return HANDLED; 9520 } 9521 break; 9522 case WifiMonitor.SCAN_RESULTS_EVENT: 9523 case WifiMonitor.SCAN_FAILED_EVENT: 9524 /* Re-enable background scan when a pending scan result is received */ 9525 if (!mScreenOn && mIsScanOngoing 9526 && mBackgroundScanSupported 9527 && !useHalBasedAutoJoinOffload()) { 9528 enableBackgroundScan(true); 9529 } else if (!mScreenOn 9530 && !mIsScanOngoing 9531 && mBackgroundScanSupported 9532 && !useHalBasedAutoJoinOffload()) { 9533 // We receive scan results from legacy PNO, hence restart the PNO alarm 9534 int delay; 9535 if (mDisconnectedPnoAlarmCount < 1) { 9536 delay = 30 * 1000; 9537 } else if (mDisconnectedPnoAlarmCount < 3) { 9538 delay = 60 * 1000; 9539 } else { 9540 delay = 360 * 1000; 9541 } 9542 mDisconnectedPnoAlarmCount++; 9543 if (VDBG) { 9544 logd("Starting PNO alarm " + delay); 9545 } 9546 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 9547 System.currentTimeMillis() + delay, 9548 mPnoIntent); 9549 } 9550 /* Handled in parent state */ 9551 ret = NOT_HANDLED; 9552 break; 9553 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 9554 NetworkInfo info = (NetworkInfo) message.obj; 9555 mP2pConnected.set(info.isConnected()); 9556 if (mP2pConnected.get()) { 9557 int defaultInterval = mContext.getResources().getInteger( 9558 R.integer.config_wifi_scan_interval_p2p_connected); 9559 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 9560 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 9561 defaultInterval); 9562 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 9563 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 9564 if (DBG) log("Turn on scanning after p2p disconnected"); 9565 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 9566 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 9567 } else { 9568 // If P2P is not connected and there are saved networks, then restart 9569 // scanning at the normal period. This is necessary because scanning might 9570 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 9571 // was set to zero. 9572 if (useHalBasedAutoJoinOffload()) { 9573 startGScanDisconnectedModeOffload("p2pRestart"); 9574 } else { 9575 startDelayedScan( 9576 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 9577 null, null); 9578 } 9579 } 9580 break; 9581 case CMD_RECONNECT: 9582 case CMD_REASSOCIATE: 9583 if (mTemporarilyDisconnectWifi) { 9584 // Drop a third party reconnect/reassociate if STA is 9585 // temporarily disconnected for p2p 9586 break; 9587 } else { 9588 // ConnectModeState handles it 9589 ret = NOT_HANDLED; 9590 } 9591 break; 9592 case CMD_SCREEN_STATE_CHANGED: 9593 handleScreenStateChanged(message.arg1 != 0); 9594 break; 9595 case WifiMonitor.RSN_PMKID_MISMATCH_EVENT: 9596 //WAR: In release M, there is a TLS bugs for some radius. M upgrade the TLS to 9597 // 1.2. However,some old radius can not support it. So if possibly disconnected 9598 // due to TLS failure, we will toggler the TLS version between 1.1 and 1.2 for 9599 // next retry connection 9600 int nid = mCurrentAssociateNetworkId; 9601 WifiConfiguration currentNet = mWifiConfigStore.getWifiConfiguration(nid); 9602 if (currentNet != null && currentNet.enterpriseConfig != null) { 9603 currentNet.enterpriseConfig.setTls12Enable( 9604 !currentNet.enterpriseConfig.getTls12Enable()); 9605 mWifiConfigStore.saveNetwork(currentNet, WifiConfiguration.UNKNOWN_UID); 9606 Log.e(TAG, "NetWork ID =" + nid + " switch to TLS1.2: " + 9607 currentNet.enterpriseConfig.getTls12Enable()); 9608 } 9609 9610 break; 9611 default: 9612 ret = NOT_HANDLED; 9613 } 9614 return ret; 9615 } 9616 9617 @Override 9618 public void exit() { 9619 mDisconnectedPnoAlarmCount = 0; 9620 /* No need for a background scan upon exit from a disconnected state */ 9621 enableBackgroundScan(false); 9622 setScanAlarm(false); 9623 mAlarmManager.cancel(mPnoIntent); 9624 } 9625 } 9626 9627 class WpsRunningState extends State { 9628 // Tracks the source to provide a reply 9629 private Message mSourceMessage; 9630 @Override 9631 public void enter() { 9632 mSourceMessage = Message.obtain(getCurrentMessage()); 9633 } 9634 @Override 9635 public boolean processMessage(Message message) { 9636 logStateAndMessage(message, this); 9637 9638 switch (message.what) { 9639 case WifiMonitor.WPS_SUCCESS_EVENT: 9640 // Ignore intermediate success, wait for full connection 9641 break; 9642 case WifiMonitor.NETWORK_CONNECTION_EVENT: 9643 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 9644 mSourceMessage.recycle(); 9645 mSourceMessage = null; 9646 deferMessage(message); 9647 transitionTo(mDisconnectedState); 9648 break; 9649 case WifiMonitor.WPS_OVERLAP_EVENT: 9650 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9651 WifiManager.WPS_OVERLAP_ERROR); 9652 mSourceMessage.recycle(); 9653 mSourceMessage = null; 9654 transitionTo(mDisconnectedState); 9655 break; 9656 case WifiMonitor.WPS_FAIL_EVENT: 9657 // Arg1 has the reason for the failure 9658 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 9659 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 9660 mSourceMessage.recycle(); 9661 mSourceMessage = null; 9662 transitionTo(mDisconnectedState); 9663 } else { 9664 if (DBG) log("Ignore unspecified fail event during WPS connection"); 9665 } 9666 break; 9667 case WifiMonitor.WPS_TIMEOUT_EVENT: 9668 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 9669 WifiManager.WPS_TIMED_OUT); 9670 mSourceMessage.recycle(); 9671 mSourceMessage = null; 9672 transitionTo(mDisconnectedState); 9673 break; 9674 case WifiManager.START_WPS: 9675 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 9676 break; 9677 case WifiManager.CANCEL_WPS: 9678 if (mWifiNative.cancelWps()) { 9679 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 9680 } else { 9681 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 9682 } 9683 transitionTo(mDisconnectedState); 9684 break; 9685 /** 9686 * Defer all commands that can cause connections to a different network 9687 * or put the state machine out of connect mode 9688 */ 9689 case CMD_STOP_DRIVER: 9690 case CMD_SET_OPERATIONAL_MODE: 9691 case WifiManager.CONNECT_NETWORK: 9692 case CMD_ENABLE_NETWORK: 9693 case CMD_RECONNECT: 9694 case CMD_REASSOCIATE: 9695 case CMD_ENABLE_ALL_NETWORKS: 9696 deferMessage(message); 9697 break; 9698 case CMD_AUTO_CONNECT: 9699 case CMD_AUTO_ROAM: 9700 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9701 return HANDLED; 9702 case CMD_START_SCAN: 9703 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 9704 return HANDLED; 9705 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 9706 if (DBG) log("Network connection lost"); 9707 handleNetworkDisconnect(); 9708 break; 9709 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 9710 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 9711 break; 9712 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 9713 // Disregard auth failure events during WPS connection. The 9714 // EAP sequence is retried several times, and there might be 9715 // failures (especially for wps pin). We will get a WPS_XXX 9716 // event at the end of the sequence anyway. 9717 if (DBG) log("Ignore auth failure during WPS connection"); 9718 break; 9719 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 9720 // Throw away supplicant state changes when WPS is running. 9721 // We will start getting supplicant state changes once we get 9722 // a WPS success or failure 9723 break; 9724 default: 9725 return NOT_HANDLED; 9726 } 9727 return HANDLED; 9728 } 9729 9730 @Override 9731 public void exit() { 9732 mWifiConfigStore.enableAllNetworks(); 9733 mWifiConfigStore.loadConfiguredNetworks(); 9734 } 9735 } 9736 9737 class SoftApStartingState extends State { 9738 @Override 9739 public void enter() { 9740 final Message message = getCurrentMessage(); 9741 if (message.what == CMD_START_AP) { 9742 final WifiConfiguration config = (WifiConfiguration) message.obj; 9743 9744 if (config == null) { 9745 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 9746 } else { 9747 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 9748 startSoftApWithConfig(config); 9749 } 9750 } else { 9751 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 9752 } 9753 } 9754 @Override 9755 public boolean processMessage(Message message) { 9756 logStateAndMessage(message, this); 9757 9758 switch(message.what) { 9759 case CMD_START_SUPPLICANT: 9760 case CMD_STOP_SUPPLICANT: 9761 case CMD_START_AP: 9762 case CMD_STOP_AP: 9763 case CMD_START_DRIVER: 9764 case CMD_STOP_DRIVER: 9765 case CMD_SET_OPERATIONAL_MODE: 9766 case CMD_SET_COUNTRY_CODE: 9767 case CMD_SET_FREQUENCY_BAND: 9768 case CMD_START_PACKET_FILTERING: 9769 case CMD_STOP_PACKET_FILTERING: 9770 case CMD_TETHER_STATE_CHANGE: 9771 deferMessage(message); 9772 break; 9773 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 9774 WifiConfiguration config = (WifiConfiguration) message.obj; 9775 if (config != null) { 9776 startSoftApWithConfig(config); 9777 } else { 9778 loge("Softap config is null!"); 9779 sendMessage(CMD_START_AP_FAILURE, WifiManager.SAP_START_FAILURE_GENERAL); 9780 } 9781 break; 9782 case CMD_START_AP_SUCCESS: 9783 setWifiApState(WIFI_AP_STATE_ENABLED, 0); 9784 transitionTo(mSoftApStartedState); 9785 break; 9786 case CMD_START_AP_FAILURE: 9787 setWifiApState(WIFI_AP_STATE_FAILED, message.arg1); 9788 transitionTo(mInitialState); 9789 break; 9790 default: 9791 return NOT_HANDLED; 9792 } 9793 return HANDLED; 9794 } 9795 } 9796 9797 class SoftApStartedState extends State { 9798 @Override 9799 public boolean processMessage(Message message) { 9800 logStateAndMessage(message, this); 9801 9802 switch(message.what) { 9803 case CMD_STOP_AP: 9804 if (DBG) log("Stopping Soft AP"); 9805 /* We have not tethered at this point, so we just shutdown soft Ap */ 9806 try { 9807 mNwService.stopAccessPoint(mInterfaceName); 9808 } catch(Exception e) { 9809 loge("Exception in stopAccessPoint()"); 9810 } 9811 setWifiApState(WIFI_AP_STATE_DISABLED, 0); 9812 transitionTo(mInitialState); 9813 break; 9814 case CMD_START_AP: 9815 // Ignore a start on a running access point 9816 break; 9817 // Fail client mode operation when soft AP is enabled 9818 case CMD_START_SUPPLICANT: 9819 loge("Cannot start supplicant with a running soft AP"); 9820 setWifiState(WIFI_STATE_UNKNOWN); 9821 break; 9822 case CMD_TETHER_STATE_CHANGE: 9823 TetherStateChange stateChange = (TetherStateChange) message.obj; 9824 if (startTethering(stateChange.available)) { 9825 transitionTo(mTetheringState); 9826 } 9827 break; 9828 default: 9829 return NOT_HANDLED; 9830 } 9831 return HANDLED; 9832 } 9833 } 9834 9835 class TetheringState extends State { 9836 @Override 9837 public void enter() { 9838 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9839 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9840 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9841 } 9842 @Override 9843 public boolean processMessage(Message message) { 9844 logStateAndMessage(message, this); 9845 9846 switch(message.what) { 9847 case CMD_TETHER_STATE_CHANGE: 9848 TetherStateChange stateChange = (TetherStateChange) message.obj; 9849 if (isWifiTethered(stateChange.active)) { 9850 transitionTo(mTetheredState); 9851 } 9852 return HANDLED; 9853 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9854 if (message.arg1 == mTetherToken) { 9855 loge("Failed to get tether update, shutdown soft access point"); 9856 transitionTo(mSoftApStartedState); 9857 // Needs to be first thing handled 9858 sendMessageAtFrontOfQueue(CMD_STOP_AP); 9859 } 9860 break; 9861 case CMD_START_SUPPLICANT: 9862 case CMD_STOP_SUPPLICANT: 9863 case CMD_START_AP: 9864 case CMD_STOP_AP: 9865 case CMD_START_DRIVER: 9866 case CMD_STOP_DRIVER: 9867 case CMD_SET_OPERATIONAL_MODE: 9868 case CMD_SET_COUNTRY_CODE: 9869 case CMD_SET_FREQUENCY_BAND: 9870 case CMD_START_PACKET_FILTERING: 9871 case CMD_STOP_PACKET_FILTERING: 9872 deferMessage(message); 9873 break; 9874 default: 9875 return NOT_HANDLED; 9876 } 9877 return HANDLED; 9878 } 9879 } 9880 9881 class TetheredState extends State { 9882 @Override 9883 public boolean processMessage(Message message) { 9884 logStateAndMessage(message, this); 9885 9886 switch(message.what) { 9887 case CMD_TETHER_STATE_CHANGE: 9888 TetherStateChange stateChange = (TetherStateChange) message.obj; 9889 if (!isWifiTethered(stateChange.active)) { 9890 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9891 setHostApRunning(null, false); 9892 setHostApRunning(null, true); 9893 } 9894 return HANDLED; 9895 case CMD_STOP_AP: 9896 if (DBG) log("Untethering before stopping AP"); 9897 setWifiApState(WIFI_AP_STATE_DISABLING, 0); 9898 stopTethering(); 9899 transitionTo(mUntetheringState); 9900 // More work to do after untethering 9901 deferMessage(message); 9902 break; 9903 default: 9904 return NOT_HANDLED; 9905 } 9906 return HANDLED; 9907 } 9908 } 9909 9910 class UntetheringState extends State { 9911 @Override 9912 public void enter() { 9913 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9914 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9915 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9916 9917 } 9918 @Override 9919 public boolean processMessage(Message message) { 9920 logStateAndMessage(message, this); 9921 9922 switch(message.what) { 9923 case CMD_TETHER_STATE_CHANGE: 9924 TetherStateChange stateChange = (TetherStateChange) message.obj; 9925 9926 /* Wait till wifi is untethered */ 9927 if (isWifiTethered(stateChange.active)) break; 9928 9929 transitionTo(mSoftApStartedState); 9930 break; 9931 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9932 if (message.arg1 == mTetherToken) { 9933 loge("Failed to get tether update, force stop access point"); 9934 transitionTo(mSoftApStartedState); 9935 } 9936 break; 9937 case CMD_START_SUPPLICANT: 9938 case CMD_STOP_SUPPLICANT: 9939 case CMD_START_AP: 9940 case CMD_STOP_AP: 9941 case CMD_START_DRIVER: 9942 case CMD_STOP_DRIVER: 9943 case CMD_SET_OPERATIONAL_MODE: 9944 case CMD_SET_COUNTRY_CODE: 9945 case CMD_SET_FREQUENCY_BAND: 9946 case CMD_START_PACKET_FILTERING: 9947 case CMD_STOP_PACKET_FILTERING: 9948 deferMessage(message); 9949 break; 9950 default: 9951 return NOT_HANDLED; 9952 } 9953 return HANDLED; 9954 } 9955 } 9956 9957 /** 9958 * State machine initiated requests can have replyTo set to null indicating 9959 * there are no recepients, we ignore those reply actions. 9960 */ 9961 private void replyToMessage(Message msg, int what) { 9962 if (msg.replyTo == null) return; 9963 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9964 mReplyChannel.replyToMessage(msg, dstMsg); 9965 } 9966 9967 private void replyToMessage(Message msg, int what, int arg1) { 9968 if (msg.replyTo == null) return; 9969 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9970 dstMsg.arg1 = arg1; 9971 mReplyChannel.replyToMessage(msg, dstMsg); 9972 } 9973 9974 private void replyToMessage(Message msg, int what, Object obj) { 9975 if (msg.replyTo == null) return; 9976 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 9977 dstMsg.obj = obj; 9978 mReplyChannel.replyToMessage(msg, dstMsg); 9979 } 9980 9981 /** 9982 * arg2 on the source message has a unique id that needs to be retained in replies 9983 * to match the request 9984 * <p>see WifiManager for details 9985 */ 9986 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 9987 Message msg = Message.obtain(); 9988 msg.what = what; 9989 msg.arg2 = srcMsg.arg2; 9990 return msg; 9991 } 9992 9993 /** 9994 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 9995 * @param msg Must have a WifiConfiguration obj to succeed 9996 */ 9997 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 9998 WifiConfiguration config) { 9999 if (config != null && config.preSharedKey != null) { 10000 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 10001 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 10002 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 10003 wifiCredentialEventType); 10004 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 10005 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 10006 } 10007 } 10008 10009 private static int parseHex(char ch) { 10010 if ('0' <= ch && ch <= '9') { 10011 return ch - '0'; 10012 } else if ('a' <= ch && ch <= 'f') { 10013 return ch - 'a' + 10; 10014 } else if ('A' <= ch && ch <= 'F') { 10015 return ch - 'A' + 10; 10016 } else { 10017 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 10018 } 10019 } 10020 10021 private byte[] parseHex(String hex) { 10022 /* This only works for good input; don't throw bad data at it */ 10023 if (hex == null) { 10024 return new byte[0]; 10025 } 10026 10027 if (hex.length() % 2 != 0) { 10028 throw new NumberFormatException(hex + " is not a valid hex string"); 10029 } 10030 10031 byte[] result = new byte[(hex.length())/2 + 1]; 10032 result[0] = (byte) ((hex.length())/2); 10033 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 10034 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 10035 byte b = (byte) (val & 0xFF); 10036 result[j] = b; 10037 } 10038 10039 return result; 10040 } 10041 10042 private static String makeHex(byte[] bytes) { 10043 StringBuilder sb = new StringBuilder(); 10044 for (byte b : bytes) { 10045 sb.append(String.format("%02x", b)); 10046 } 10047 return sb.toString(); 10048 } 10049 10050 private static String makeHex(byte[] bytes, int from, int len) { 10051 StringBuilder sb = new StringBuilder(); 10052 for (int i = 0; i < len; i++) { 10053 sb.append(String.format("%02x", bytes[from+i])); 10054 } 10055 return sb.toString(); 10056 } 10057 10058 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 10059 10060 int len = array1.length + array2.length + array3.length; 10061 10062 if (array1.length != 0) { 10063 len++; /* add another byte for size */ 10064 } 10065 10066 if (array2.length != 0) { 10067 len++; /* add another byte for size */ 10068 } 10069 10070 if (array3.length != 0) { 10071 len++; /* add another byte for size */ 10072 } 10073 10074 byte[] result = new byte[len]; 10075 10076 int index = 0; 10077 if (array1.length != 0) { 10078 result[index] = (byte) (array1.length & 0xFF); 10079 index++; 10080 for (byte b : array1) { 10081 result[index] = b; 10082 index++; 10083 } 10084 } 10085 10086 if (array2.length != 0) { 10087 result[index] = (byte) (array2.length & 0xFF); 10088 index++; 10089 for (byte b : array2) { 10090 result[index] = b; 10091 index++; 10092 } 10093 } 10094 10095 if (array3.length != 0) { 10096 result[index] = (byte) (array3.length & 0xFF); 10097 index++; 10098 for (byte b : array3) { 10099 result[index] = b; 10100 index++; 10101 } 10102 } 10103 return result; 10104 } 10105 10106 private static byte[] concatHex(byte[] array1, byte[] array2) { 10107 10108 int len = array1.length + array2.length; 10109 10110 byte[] result = new byte[len]; 10111 10112 int index = 0; 10113 if (array1.length != 0) { 10114 for (byte b : array1) { 10115 result[index] = b; 10116 index++; 10117 } 10118 } 10119 10120 if (array2.length != 0) { 10121 for (byte b : array2) { 10122 result[index] = b; 10123 index++; 10124 } 10125 } 10126 10127 return result; 10128 } 10129 10130 String getGsmSimAuthResponse(String[] requestData, TelephonyManager tm) { 10131 StringBuilder sb = new StringBuilder(); 10132 for (String challenge : requestData) { 10133 if (challenge == null || challenge.isEmpty()) { 10134 continue; 10135 } 10136 logd("RAND = " + challenge); 10137 10138 byte[] rand = null; 10139 try { 10140 rand = parseHex(challenge); 10141 } catch (NumberFormatException e) { 10142 loge("malformed challenge"); 10143 continue; 10144 } 10145 10146 String base64Challenge = android.util.Base64.encodeToString( 10147 rand, android.util.Base64.NO_WRAP); 10148 /* 10149 * First, try with appType = 2 => USIM according to 10150 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 10151 */ 10152 int appType = 2; 10153 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10154 if (tmResponse == null) { 10155 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 10156 * appType = 1 => SIM 10157 */ 10158 appType = 1; 10159 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10160 } 10161 logv("Raw Response - " + tmResponse); 10162 10163 if (tmResponse == null || tmResponse.length() <= 4) { 10164 loge("bad response - " + tmResponse); 10165 return null; 10166 } 10167 10168 byte[] result = android.util.Base64.decode(tmResponse, android.util.Base64.DEFAULT); 10169 logv("Hex Response -" + makeHex(result)); 10170 int sres_len = result[0]; 10171 if (sres_len >= result.length) { 10172 loge("malfomed response - " + tmResponse); 10173 return null; 10174 } 10175 String sres = makeHex(result, 1, sres_len); 10176 int kc_offset = 1 + sres_len; 10177 if (kc_offset >= result.length) { 10178 loge("malfomed response - " + tmResponse); 10179 return null; 10180 } 10181 int kc_len = result[kc_offset]; 10182 if (kc_offset + kc_len > result.length) { 10183 loge("malfomed response - " + tmResponse); 10184 return null; 10185 } 10186 String kc = makeHex(result, 1 + kc_offset, kc_len); 10187 sb.append(":" + kc + ":" + sres); 10188 logv("kc:" + kc + " sres:" + sres); 10189 } 10190 10191 return sb.toString(); 10192 } 10193 10194 void handleGsmAuthRequest(SimAuthRequestData requestData) { 10195 if (targetWificonfiguration == null 10196 || targetWificonfiguration.networkId == requestData.networkId) { 10197 logd("id matches targetWifiConfiguration"); 10198 } else { 10199 logd("id does not match targetWifiConfiguration"); 10200 return; 10201 } 10202 10203 TelephonyManager tm = (TelephonyManager) 10204 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10205 10206 if (tm == null) { 10207 loge("could not get telephony manager"); 10208 mWifiNative.simAuthFailedResponse(requestData.networkId); 10209 return; 10210 } 10211 10212 String response = getGsmSimAuthResponse(requestData.data, tm); 10213 if (response == null) { 10214 mWifiNative.simAuthFailedResponse(requestData.networkId); 10215 } else { 10216 logv("Supplicant Response -" + response); 10217 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 10218 } 10219 } 10220 10221 void handle3GAuthRequest(SimAuthRequestData requestData) { 10222 StringBuilder sb = new StringBuilder(); 10223 byte[] rand = null; 10224 byte[] authn = null; 10225 String res_type = "UMTS-AUTH"; 10226 10227 if (targetWificonfiguration == null 10228 || targetWificonfiguration.networkId == requestData.networkId) { 10229 logd("id matches targetWifiConfiguration"); 10230 } else { 10231 logd("id does not match targetWifiConfiguration"); 10232 return; 10233 } 10234 if (requestData.data.length == 2) { 10235 try { 10236 rand = parseHex(requestData.data[0]); 10237 authn = parseHex(requestData.data[1]); 10238 } catch (NumberFormatException e) { 10239 loge("malformed challenge"); 10240 } 10241 } else { 10242 loge("malformed challenge"); 10243 } 10244 10245 String tmResponse = ""; 10246 if (rand != null && authn != null) { 10247 String base64Challenge = android.util.Base64.encodeToString( 10248 concatHex(rand,authn), android.util.Base64.NO_WRAP); 10249 10250 TelephonyManager tm = (TelephonyManager) 10251 mContext.getSystemService(Context.TELEPHONY_SERVICE); 10252 if (tm != null) { 10253 int appType = 2; // 2 => USIM 10254 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 10255 logv("Raw Response - " + tmResponse); 10256 } else { 10257 loge("could not get telephony manager"); 10258 } 10259 } 10260 10261 boolean good_response = false; 10262 if (tmResponse != null && tmResponse.length() > 4) { 10263 byte[] result = android.util.Base64.decode(tmResponse, 10264 android.util.Base64.DEFAULT); 10265 loge("Hex Response - " + makeHex(result)); 10266 byte tag = result[0]; 10267 if (tag == (byte) 0xdb) { 10268 logv("successful 3G authentication "); 10269 int res_len = result[1]; 10270 String res = makeHex(result, 2, res_len); 10271 int ck_len = result[res_len + 2]; 10272 String ck = makeHex(result, res_len + 3, ck_len); 10273 int ik_len = result[res_len + ck_len + 3]; 10274 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 10275 sb.append(":" + ik + ":" + ck + ":" + res); 10276 logv("ik:" + ik + "ck:" + ck + " res:" + res); 10277 good_response = true; 10278 } else if (tag == (byte) 0xdc) { 10279 loge("synchronisation failure"); 10280 int auts_len = result[1]; 10281 String auts = makeHex(result, 2, auts_len); 10282 res_type = "UMTS-AUTS"; 10283 sb.append(":" + auts); 10284 logv("auts:" + auts); 10285 good_response = true; 10286 } else { 10287 loge("bad response - unknown tag = " + tag); 10288 } 10289 } else { 10290 loge("bad response - " + tmResponse); 10291 } 10292 10293 if (good_response) { 10294 String response = sb.toString(); 10295 if (VDBG) logv("Supplicant Response -" + response); 10296 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 10297 } else { 10298 mWifiNative.umtsAuthFailedResponse(requestData.networkId); 10299 } 10300 } 10301 10302 /** 10303 * @param reason reason code from supplicant on network disconnected event 10304 * @return true if this is a suspicious disconnect 10305 */ 10306 static boolean unexpectedDisconnectedReason(int reason) { 10307 return reason == 2 // PREV_AUTH_NOT_VALID 10308 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 10309 || reason == 7 // FRAME_FROM_NONASSOC_STA 10310 || reason == 8 // STA_HAS_LEFT 10311 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 10312 || reason == 14 // MICHAEL_MIC_FAILURE 10313 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 10314 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 10315 || reason == 18 // GROUP_CIPHER_NOT_VALID 10316 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 10317 || reason == 23 // IEEE_802_1X_AUTH_FAILED 10318 || reason == 34; // DISASSOC_LOW_ACK 10319 } 10320} 10321