WifiStateMachine.java revision 12aeea8779cc4ee74ce390460e9dc4f2a6a94021
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.app.ActivityManager; 35import android.app.AlarmManager; 36import android.app.AlertDialog; 37import android.app.PendingIntent; 38import android.app.backup.IBackupManager; 39import android.bluetooth.BluetoothAdapter; 40import android.content.BroadcastReceiver; 41import android.content.Context; 42import android.content.DialogInterface; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.PackageManager; 47import android.content.pm.PackageManager.NameNotFoundException; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.DhcpResults; 51import android.net.BaseDhcpStateMachine; 52import android.net.DhcpStateMachine; 53import android.net.Network; 54import android.net.dhcp.DhcpClient; 55import android.net.InterfaceConfiguration; 56import android.net.IpReachabilityMonitor; 57import android.net.LinkAddress; 58import android.net.LinkProperties; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkFactory; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkRequest; 65import android.net.NetworkUtils; 66import android.net.RouteInfo; 67import android.net.StaticIpConfiguration; 68import android.net.TrafficStats; 69import android.net.wifi.RssiPacketCountInfo; 70import android.net.wifi.ScanResult; 71import android.net.wifi.ScanSettings; 72import android.net.wifi.SupplicantState; 73import android.net.wifi.WifiChannel; 74import android.net.wifi.WifiConfiguration; 75import android.net.wifi.WifiConnectionStatistics; 76import android.net.wifi.WifiEnterpriseConfig; 77import android.net.wifi.WifiInfo; 78import android.net.wifi.WifiLinkLayerStats; 79import android.net.wifi.WifiManager; 80import android.net.wifi.WifiScanner; 81import android.net.wifi.WifiSsid; 82import android.net.wifi.WpsInfo; 83import android.net.wifi.WpsResult; 84import android.net.wifi.WpsResult.Status; 85import android.net.wifi.p2p.IWifiP2pManager; 86import android.os.BatteryStats; 87import android.os.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; 106import android.view.WindowManager; 107 108import com.android.internal.R; 109import com.android.internal.app.IBatteryStats; 110import com.android.internal.util.AsyncChannel; 111import com.android.internal.util.Protocol; 112import com.android.internal.util.State; 113import com.android.internal.util.StateMachine; 114import com.android.server.net.NetlinkTracker; 115import com.android.server.wifi.hotspot2.NetworkDetail; 116import com.android.server.wifi.hotspot2.SupplicantBridge; 117import com.android.server.wifi.hotspot2.Utils; 118import com.android.server.wifi.p2p.WifiP2pServiceImpl; 119 120import java.io.BufferedReader; 121import java.io.FileDescriptor; 122import java.io.FileNotFoundException; 123import java.io.FileReader; 124import java.io.IOException; 125import java.io.PrintWriter; 126import java.net.Inet4Address; 127import java.net.InetAddress; 128import java.util.ArrayList; 129import java.util.Calendar; 130import java.util.HashSet; 131import java.util.LinkedList; 132import java.util.List; 133import java.util.Locale; 134import java.util.Queue; 135import java.util.Random; 136import java.util.concurrent.atomic.AtomicBoolean; 137import java.util.concurrent.atomic.AtomicInteger; 138import java.util.regex.Pattern; 139 140/** 141 * Track the state of Wifi connectivity. All event handling is done here, 142 * and all changes in connectivity state are initiated here. 143 * 144 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 145 * In the current implementation, we support concurrent wifi p2p and wifi operation. 146 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 147 * handles p2p operation. 148 * 149 * @hide 150 */ 151public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler { 152 153 private static final String NETWORKTYPE = "WIFI"; 154 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 155 private static boolean DBG = true; 156 private static boolean VDBG = false; 157 private static boolean VVDBG = false; 158 private static boolean mLogMessages = false; 159 private static final String TAG = "WifiStateMachine"; 160 161 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 162 163 private static final String GOOGLE_OUI = "DA-A1-19"; 164 165 /* temporary debug flag - best network selection development */ 166 private static boolean PDBG = false; 167 168 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 169 * the corresponding BSSID. 170 */ 171 private boolean didBlackListBSSID = false; 172 173 /** 174 * Log with error attribute 175 * 176 * @param s is string log 177 */ 178 protected void loge(String s) { 179 Log.e(getName(), s); 180 } 181 protected void logd(String s) { 182 Log.d(getName(), s); 183 } 184 protected void log(String s) {; 185 Log.d(getName(), s); 186 } 187 188 private WifiMonitor mWifiMonitor; 189 private WifiNative mWifiNative; 190 private WifiConfigStore mWifiConfigStore; 191 private WifiAutoJoinController mWifiAutoJoinController; 192 private INetworkManagementService mNwService; 193 private ConnectivityManager mCm; 194 private WifiLogger mWifiLogger; 195 196 private final boolean mP2pSupported; 197 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 198 private boolean mTemporarilyDisconnectWifi = false; 199 private final String mPrimaryDeviceType; 200 201 /* Scan results handling */ 202 private List<ScanDetail> mScanResults = new ArrayList<>(); 203 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 204 private static final int SCAN_RESULT_CACHE_SIZE = 160; 205 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 206 // For debug, number of known scan results that were found as part of last scan result event, 207 // as well the number of scans results returned by the supplicant with that message 208 private int mNumScanResultsKnown; 209 private int mNumScanResultsReturned; 210 211 private boolean mScreenOn = false; 212 213 /* Chipset supports background scan */ 214 private final boolean mBackgroundScanSupported; 215 216 private final String mInterfaceName; 217 /* Tethering interface could be separate from wlan interface */ 218 private String mTetherInterfaceName; 219 220 private int mLastSignalLevel = -1; 221 private String mLastBssid; 222 private int mLastNetworkId; // The network Id we successfully joined 223 private boolean linkDebouncing = false; 224 225 private boolean mAlwaysOnPnoSupported = false; 226 private int mHalFeatureSet = 0; 227 private static int mPnoResultFound = 0; 228 229 @Override 230 public void onPnoNetworkFound(ScanResult results[]) { 231 if (DBG) { 232 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 233 for (int i = 0; i < results.length; i++) { 234 Log.e(TAG, results[i].toString()); 235 } 236 } 237 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 238 } 239 240 public void processPnoNetworkFound(ScanResult results[]) { 241 ScanSettings settings = new ScanSettings(); 242 settings.channelSet = new ArrayList<WifiChannel>(); 243 244 for (int i=0; i<results.length; i++) { 245 WifiChannel channel = new WifiChannel(); 246 channel.freqMHz = results[i].frequency; 247 settings.channelSet.add(channel); 248 } 249 250 stopPno(); 251 252 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 253 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 254 mPnoResultFound ++; 255 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 256 257 // restart Pno after 30ms 258 sendMessageDelayed(CMD_START_PNO, 30 * 1000); 259 } 260 261 // Testing various network disconnect cases by sending lots of spurious 262 // disconnect to supplicant 263 private boolean testNetworkDisconnect = false; 264 265 private boolean mEnableRssiPolling = false; 266 private boolean mEnableBackgroundScan = false; 267 private int mRssiPollToken = 0; 268 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 269 * In CONNECT_MODE, the STA can scan and connect to an access point 270 * In SCAN_ONLY_MODE, the STA can only scan for access points 271 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 272 */ 273 private int mOperationalMode = CONNECT_MODE; 274 private boolean mIsScanOngoing = false; 275 private boolean mIsFullScanOngoing = false; 276 private boolean mSendScanResultsBroadcast = false; 277 278 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 279 private WorkSource mScanWorkSource = null; 280 private static final int UNKNOWN_SCAN_SOURCE = -1; 281 private static final int SCAN_ALARM_SOURCE = -2; 282 private static final int ADD_OR_UPDATE_SOURCE = -3; 283 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 284 private static final int ENABLE_WIFI = -5; 285 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 286 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 287 288 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 289 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 290 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 291 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 292 293 /* Tracks if state machine has received any screen state change broadcast yet. 294 * We can miss one of these at boot. 295 */ 296 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 297 298 private boolean mBluetoothConnectionActive = false; 299 300 private PowerManager.WakeLock mSuspendWakeLock; 301 302 /** 303 * Interval in milliseconds between polling for RSSI 304 * and linkspeed information 305 */ 306 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 307 308 /** 309 * Interval in milliseconds between receiving a disconnect event 310 * while connected to a good AP, and handling the disconnect proper 311 */ 312 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 313 314 /** 315 * Delay between supplicant restarts upon failure to establish connection 316 */ 317 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 318 319 /** 320 * Number of times we attempt to restart supplicant 321 */ 322 private static final int SUPPLICANT_RESTART_TRIES = 5; 323 324 private int mSupplicantRestartCount = 0; 325 /* Tracks sequence number on stop failure message */ 326 private int mSupplicantStopFailureToken = 0; 327 328 /** 329 * Tether state change notification time out 330 */ 331 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 332 333 /* Tracks sequence number on a tether notification time out */ 334 private int mTetherToken = 0; 335 336 /** 337 * Driver start time out. 338 */ 339 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 340 341 /* Tracks sequence number on a driver time out */ 342 private int mDriverStartToken = 0; 343 344 /** 345 * The link properties of the wifi interface. 346 * Do not modify this directly; use updateLinkProperties instead. 347 */ 348 private LinkProperties mLinkProperties; 349 350 /* Tracks sequence number on a periodic scan message */ 351 private int mPeriodicScanToken = 0; 352 353 // Wakelock held during wifi start/stop and driver load/unload 354 private PowerManager.WakeLock mWakeLock; 355 356 private Context mContext; 357 358 private final Object mDhcpResultsLock = new Object(); 359 private DhcpResults mDhcpResults; 360 private WifiInfo mWifiInfo; 361 private NetworkInfo mNetworkInfo; 362 private NetworkCapabilities mNetworkCapabilities; 363 private SupplicantStateTracker mSupplicantStateTracker; 364 private BaseDhcpStateMachine mDhcpStateMachine; 365 private boolean mDhcpActive = false; 366 367 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 368 369 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 370 371 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 372 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 373 374 // Roaming failure count 375 private int mRoamFailCount = 0; 376 377 // This is the BSSID we are trying to associate to, it can be set to "any" 378 // if we havent selected a BSSID for joining. 379 // if we havent selected a BSSID for joining. 380 // The BSSID we are associated to is found in mWifiInfo 381 private String mTargetRoamBSSID = "any"; 382 383 private long mLastDriverRoamAttempt = 0; 384 385 private WifiConfiguration targetWificonfiguration = null; 386 387 // Used as debug to indicate which configuration last was saved 388 private WifiConfiguration lastSavedConfigurationAttempt = null; 389 390 // Used as debug to indicate which configuration last was removed 391 private WifiConfiguration lastForgetConfigurationAttempt = null; 392 393 //Random used by softAP channel Selection 394 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 395 396 boolean isRoaming() { 397 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 398 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 399 } 400 401 public void autoRoamSetBSSID(int netId, String bssid) { 402 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 403 } 404 405 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 406 boolean ret = true; 407 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 408 if (bssid == null) bssid = "any"; 409 if (config == null) return false; // Nothing to do 410 411 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 412 return false; // We didnt change anything 413 } 414 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 415 // Changing to ANY 416 if (!mWifiConfigStore.roamOnAny) { 417 ret = false; // Nothing to do 418 } 419 } 420 if (VDBG) { 421 loge("autoRoamSetBSSID " + bssid 422 + " key=" + config.configKey()); 423 } 424 config.autoJoinBSSID = bssid; 425 mTargetRoamBSSID = bssid; 426 mWifiConfigStore.saveWifiConfigBSSID(config); 427 return ret; 428 } 429 430 /** 431 * Save the UID correctly depending on if this is a new or existing network. 432 * @return true if operation is authorized, false otherwise 433 */ 434 boolean recordUidIfAuthorized(WifiConfiguration config, int uid) { 435 if (!mWifiConfigStore.isNetworkConfigured(config)) { 436 config.creatorUid = uid; 437 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 438 } else if (!mWifiConfigStore.canModifyNetwork(uid, config)) { 439 return false; 440 } 441 442 config.lastUpdateUid = uid; 443 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 444 445 return true; 446 447 } 448 449 /** 450 * Checks to see if user has specified if the apps configuration is connectable. 451 * If the user hasn't specified we query the user and return true. 452 * 453 * @param message The message to be deferred 454 * @param netId Network id of the configuration to check against 455 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 456 * CONFIG_OVERRIDE_PERMISSION 457 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 458 */ 459 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 460 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 461 462 // We can only evaluate saved configurations. 463 if (config == null) { 464 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 465 return true; 466 } 467 468 switch (config.userApproved) { 469 case WifiConfiguration.USER_APPROVED: 470 case WifiConfiguration.USER_BANNED: 471 return false; 472 case WifiConfiguration.USER_PENDING: 473 default: // USER_UNSPECIFIED 474 /* the intention was to ask user here; but a dialog box is * 475 * too invasive; so we are going to allow connection for now */ 476 config.userApproved = WifiConfiguration.USER_APPROVED; 477 return false; 478 } 479 } 480 481 /** 482 * Subset of link properties coming from netlink. 483 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 484 * and domains obtained from router advertisements (RFC 6106). 485 */ 486 private NetlinkTracker mNetlinkTracker; 487 488 private IpReachabilityMonitor mIpReachabilityMonitor; 489 490 private AlarmManager mAlarmManager; 491 private PendingIntent mScanIntent; 492 private PendingIntent mDriverStopIntent; 493 494 /* Tracks current frequency mode */ 495 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 496 497 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 498 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 499 500 // Channel for sending replies. 501 private AsyncChannel mReplyChannel = new AsyncChannel(); 502 503 private WifiP2pServiceImpl mWifiP2pServiceImpl; 504 505 // Used to initiate a connection with WifiP2pService 506 private AsyncChannel mWifiP2pChannel; 507 private AsyncChannel mWifiApConfigChannel; 508 509 private WifiScanner mWifiScanner; 510 511 private int mConnectionRequests = 0; 512 private WifiNetworkFactory mNetworkFactory; 513 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 514 private WifiNetworkAgent mNetworkAgent; 515 516 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 517 // We should really persist that into the networkHistory.txt file, and read it back when 518 // WifiStateMachine starts up 519 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 520 521 // Used to filter out requests we couldn't possibly satisfy. 522 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 523 524 /* The base for wifi message types */ 525 static final int BASE = Protocol.BASE_WIFI; 526 /* Start the supplicant */ 527 static final int CMD_START_SUPPLICANT = BASE + 11; 528 /* Stop the supplicant */ 529 static final int CMD_STOP_SUPPLICANT = BASE + 12; 530 /* Start the driver */ 531 static final int CMD_START_DRIVER = BASE + 13; 532 /* Stop the driver */ 533 static final int CMD_STOP_DRIVER = BASE + 14; 534 /* Indicates Static IP succeeded */ 535 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 536 /* Indicates Static IP failed */ 537 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 538 /* Indicates supplicant stop failed */ 539 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 540 /* Delayed stop to avoid shutting down driver too quick*/ 541 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 542 /* A delayed message sent to start driver when it fail to come up */ 543 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 544 545 /* Start the soft access point */ 546 static final int CMD_START_AP = BASE + 21; 547 /* Indicates soft ap start succeeded */ 548 static final int CMD_START_AP_SUCCESS = BASE + 22; 549 /* Indicates soft ap start failed */ 550 static final int CMD_START_AP_FAILURE = BASE + 23; 551 /* Stop the soft access point */ 552 static final int CMD_STOP_AP = BASE + 24; 553 /* Set the soft access point configuration */ 554 static final int CMD_SET_AP_CONFIG = BASE + 25; 555 /* Soft access point configuration set completed */ 556 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 557 /* Request the soft access point configuration */ 558 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 559 /* Response to access point configuration request */ 560 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 561 /* Invoked when getting a tether state change notification */ 562 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 563 /* A delayed message sent to indicate tether state change failed to arrive */ 564 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 565 566 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 567 568 /* Supplicant commands */ 569 /* Is supplicant alive ? */ 570 static final int CMD_PING_SUPPLICANT = BASE + 51; 571 /* Add/update a network configuration */ 572 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 573 /* Delete a network */ 574 static final int CMD_REMOVE_NETWORK = BASE + 53; 575 /* Enable a network. The device will attempt a connection to the given network. */ 576 static final int CMD_ENABLE_NETWORK = BASE + 54; 577 /* Enable all networks */ 578 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 579 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 580 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 581 /* Clear the blacklist network list */ 582 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 583 /* Save configuration */ 584 static final int CMD_SAVE_CONFIG = BASE + 58; 585 /* Get configured networks */ 586 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 587 /* Get available frequencies */ 588 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 589 /* Get adaptors */ 590 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 591 /* Get configured networks with real preSharedKey */ 592 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 593 /* Get Link Layer Stats thru HAL */ 594 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 595 /* Supplicant commands after driver start*/ 596 /* Initiate a scan */ 597 static final int CMD_START_SCAN = BASE + 71; 598 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 599 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 600 /* Disconnect from a network */ 601 static final int CMD_DISCONNECT = BASE + 73; 602 /* Reconnect to a network */ 603 static final int CMD_RECONNECT = BASE + 74; 604 /* Reassociate to a network */ 605 static final int CMD_REASSOCIATE = BASE + 75; 606 /* Get Connection Statistis */ 607 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 608 609 /* Controls suspend mode optimizations 610 * 611 * When high perf mode is enabled, suspend mode optimizations are disabled 612 * 613 * When high perf mode is disabled, suspend mode optimizations are enabled 614 * 615 * Suspend mode optimizations include: 616 * - packet filtering 617 * - turn off roaming 618 * - DTIM wake up settings 619 */ 620 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 621 /* Set the country code */ 622 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 623 /* Enables RSSI poll */ 624 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 625 /* RSSI poll */ 626 static final int CMD_RSSI_POLL = BASE + 83; 627 /* Set up packet filtering */ 628 static final int CMD_START_PACKET_FILTERING = BASE + 84; 629 /* Clear packet filter */ 630 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 631 /* Enable suspend mode optimizations in the driver */ 632 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 633 /* Delayed NETWORK_DISCONNECT */ 634 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 635 /* When there are no saved networks, we do a periodic scan to notify user of 636 * an open network */ 637 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 638 /* Test network Disconnection NETWORK_DISCONNECT */ 639 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 640 private int testNetworkDisconnectCounter = 0; 641 642 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 643 static final int MULTICAST_V6 = 1; 644 static final int MULTICAST_V4 = 0; 645 646 /* Set the frequency band */ 647 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 648 /* Enable TDLS on a specific MAC address */ 649 static final int CMD_ENABLE_TDLS = BASE + 92; 650 /* DHCP/IP configuration watchdog */ 651 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 652 /* Remove a packages associated configrations */ 653 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 654 /* Remove a packages associated configrations */ 655 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152; 656 657 /** 658 * Make this timer 40 seconds, which is about the normal DHCP timeout. 659 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 660 * for more than 30 seconds. 661 */ 662 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 663 664 int obtainingIpWatchdogCount = 0; 665 666 /* Commands from/to the SupplicantStateTracker */ 667 /* Reset the supplicant state tracker */ 668 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 669 670 671 /** 672 * Watchdog for protecting against b/16823537 673 * Leave time for 4-way handshake to succeed 674 */ 675 static final int ROAM_GUARD_TIMER_MSEC = 15000; 676 677 int roamWatchdogCount = 0; 678 /* Roam state watchdog */ 679 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 680 /* Screen change intent handling */ 681 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 682 683 int disconnectingWatchdogCount = 0; 684 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 685 686 /* Disconnecting state watchdog */ 687 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 688 689 /* Disable an ephemeral network */ 690 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 691 692 /* Get matching network */ 693 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 694 695 /* P2p commands */ 696 /* We are ok with no response here since we wont do much with it anyway */ 697 public static final int CMD_ENABLE_P2P = BASE + 131; 698 /* In order to shut down supplicant cleanly, we wait till p2p has 699 * been disabled */ 700 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 701 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 702 703 public static final int CMD_BOOT_COMPLETED = BASE + 134; 704 705 /* We now have a valid IP configuration. */ 706 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 707 /* We no longer have a valid IP configuration. */ 708 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 709 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 710 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 711 712 /* Supplicant is trying to associate to a given BSSID */ 713 static final int CMD_TARGET_BSSID = BASE + 141; 714 715 /* Reload all networks and reconnect */ 716 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 717 718 static final int CMD_AUTO_CONNECT = BASE + 143; 719 720 static final int network_status_unwanted_disconnect = 0; 721 static final int network_status_unwanted_disable_autojoin = 1; 722 723 static final int CMD_UNWANTED_NETWORK = BASE + 144; 724 725 static final int CMD_AUTO_ROAM = BASE + 145; 726 727 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 728 729 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 730 731 static final int CMD_NETWORK_STATUS = BASE + 148; 732 733 /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ 734 static final int CMD_IP_REACHABILITY_LOST = BASE + 149; 735 736 /* Note: BASE + 152 in use by CMD_REMOVE_USER_CONFIGURATIONS */ 737 738 static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; 739 static final int CMD_START_PNO = BASE + 154; /* used to restart PNO when it was 740 stopped due to association attempt */ 741 742 static final int CMD_STARTED_PNO_DBG = BASE + 155; /* used to log if PNO was started */ 743 744 static final int CMD_PNO_NETWORK_FOUND = BASE + 156; 745 746 747 /* Wifi state machine modes of operation */ 748 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 749 public static final int CONNECT_MODE = 1; 750 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 751 public static final int SCAN_ONLY_MODE = 2; 752 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 753 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 754 755 private static final int SUCCESS = 1; 756 private static final int FAILURE = -1; 757 758 /* Tracks if suspend optimizations need to be disabled by DHCP, 759 * screen or due to high perf mode. 760 * When any of them needs to disable it, we keep the suspend optimizations 761 * disabled 762 */ 763 private int mSuspendOptNeedsDisabled = 0; 764 765 private static final int SUSPEND_DUE_TO_DHCP = 1; 766 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 767 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 768 769 /* Tracks if user has enabled suspend optimizations through settings */ 770 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 771 772 /** 773 * Default framework scan interval in milliseconds. This is used in the scenario in which 774 * wifi chipset does not support background scanning to set up a 775 * periodic wake up scan so that the device can connect to a new access 776 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 777 * override this. 778 */ 779 private final int mDefaultFrameworkScanIntervalMs; 780 781 /** 782 * Supplicant scan interval in milliseconds. 783 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 784 * from the default config if the setting is not set 785 */ 786 private long mSupplicantScanIntervalMs; 787 788 /** 789 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 790 */ 791 private long lastFullBandConnectedTimeMilli; 792 793 /** 794 * time interval to the next full band scan we will perform for 795 * autojoin while connected with screen lit 796 */ 797 private long fullBandConnectedTimeIntervalMilli; 798 799 /** 800 * max time interval to the next full band scan we will perform for 801 * autojoin while connected with screen lit 802 * Max time is 5 minutes 803 */ 804 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 805 806 /** 807 * Minimum time interval between enabling all networks. 808 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 809 * due to enabling every time. We add a threshold to avoid this. 810 */ 811 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 812 private long mLastEnableAllNetworksTime; 813 814 int mRunningBeaconCount = 0; 815 816 /** 817 * Starting and shutting down driver too quick causes problems leading to driver 818 * being in a bad state. Delay driver stop. 819 */ 820 private final int mDriverStopDelayMs; 821 private int mDelayedStopCounter; 822 private boolean mInDelayedStop = false; 823 824 // there is a delay between StateMachine change country code and Supplicant change country code 825 // here save the current WifiStateMachine set country code 826 private volatile String mSetCountryCode = null; 827 828 // Supplicant doesn't like setting the same country code multiple times (it may drop 829 // currently connected network), so we save the current device set country code here to avoid 830 // redundency 831 private String mDriverSetCountryCode = null; 832 833 /* Default parent state */ 834 private State mDefaultState = new DefaultState(); 835 /* Temporary initial state */ 836 private State mInitialState = new InitialState(); 837 /* Driver loaded, waiting for supplicant to start */ 838 private State mSupplicantStartingState = new SupplicantStartingState(); 839 /* Driver loaded and supplicant ready */ 840 private State mSupplicantStartedState = new SupplicantStartedState(); 841 /* Waiting for supplicant to stop and monitor to exit */ 842 private State mSupplicantStoppingState = new SupplicantStoppingState(); 843 /* Driver start issued, waiting for completed event */ 844 private State mDriverStartingState = new DriverStartingState(); 845 /* Driver started */ 846 private State mDriverStartedState = new DriverStartedState(); 847 /* Wait until p2p is disabled 848 * This is a special state which is entered right after we exit out of DriverStartedState 849 * before transitioning to another state. 850 */ 851 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 852 /* Driver stopping */ 853 private State mDriverStoppingState = new DriverStoppingState(); 854 /* Driver stopped */ 855 private State mDriverStoppedState = new DriverStoppedState(); 856 /* Scan for networks, no connection will be established */ 857 private State mScanModeState = new ScanModeState(); 858 /* Connecting to an access point */ 859 private State mConnectModeState = new ConnectModeState(); 860 /* Connected at 802.11 (L2) level */ 861 private State mL2ConnectedState = new L2ConnectedState(); 862 /* fetching IP after connection to access point (assoc+auth complete) */ 863 private State mObtainingIpState = new ObtainingIpState(); 864 /* Waiting for link quality verification to be complete */ 865 private State mVerifyingLinkState = new VerifyingLinkState(); 866 /* Connected with IP addr */ 867 private State mConnectedState = new ConnectedState(); 868 /* Roaming */ 869 private State mRoamingState = new RoamingState(); 870 /* disconnect issued, waiting for network disconnect confirmation */ 871 private State mDisconnectingState = new DisconnectingState(); 872 /* Network is not connected, supplicant assoc+auth is not complete */ 873 private State mDisconnectedState = new DisconnectedState(); 874 /* Waiting for WPS to be completed*/ 875 private State mWpsRunningState = new WpsRunningState(); 876 877 /* Soft ap is starting up */ 878 private State mSoftApStartingState = new SoftApStartingState(); 879 /* Soft ap is running */ 880 private State mSoftApStartedState = new SoftApStartedState(); 881 /* Soft ap is running and we are waiting for tether notification */ 882 private State mTetheringState = new TetheringState(); 883 /* Soft ap is running and we are tethered through connectivity service */ 884 private State mTetheredState = new TetheredState(); 885 /* Waiting for untether confirmation before stopping soft Ap */ 886 private State mUntetheringState = new UntetheringState(); 887 888 889 890 private class WifiScanListener implements WifiScanner.ScanListener { 891 @Override 892 public void onSuccess() { 893 Log.e(TAG, "WifiScanListener onSuccess"); 894 }; 895 @Override 896 public void onFailure(int reason, String description) { 897 Log.e(TAG, "WifiScanListener onFailure"); 898 }; 899 @Override 900 public void onPeriodChanged(int periodInMs) { 901 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 902 } 903 @Override 904 public void onResults(WifiScanner.ScanData[] results) { 905 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 906 } 907 @Override 908 public void onFullResult(ScanResult fullScanResult) { 909 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 910 } 911 912 WifiScanListener() {} 913 } 914 915 WifiScanListener mWifiScanListener = new WifiScanListener(); 916 917 918 private class TetherStateChange { 919 ArrayList<String> available; 920 ArrayList<String> active; 921 922 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 923 available = av; 924 active = ac; 925 } 926 } 927 928 public static class SimAuthRequestData { 929 int networkId; 930 int protocol; 931 String ssid; 932 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 933 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 934 String[] data; 935 } 936 937 /** 938 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 939 * {@link WifiManager#WIFI_STATE_DISABLING}, 940 * {@link WifiManager#WIFI_STATE_ENABLED}, 941 * {@link WifiManager#WIFI_STATE_ENABLING}, 942 * {@link WifiManager#WIFI_STATE_UNKNOWN} 943 */ 944 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 945 946 /** 947 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 948 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 949 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 950 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 951 * {@link WifiManager#WIFI_AP_STATE_FAILED} 952 */ 953 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 954 955 private static final int SCAN_REQUEST = 0; 956 private static final String ACTION_START_SCAN = 957 "com.android.server.WifiManager.action.START_SCAN"; 958 959 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 960 private static final int DRIVER_STOP_REQUEST = 0; 961 private static final String ACTION_DELAYED_DRIVER_STOP = 962 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 963 964 /** 965 * Keep track of whether WIFI is running. 966 */ 967 private boolean mIsRunning = false; 968 969 /** 970 * Keep track of whether we last told the battery stats we had started. 971 */ 972 private boolean mReportedRunning = false; 973 974 /** 975 * Most recently set source of starting WIFI. 976 */ 977 private final WorkSource mRunningWifiUids = new WorkSource(); 978 979 /** 980 * The last reported UIDs that were responsible for starting WIFI. 981 */ 982 private final WorkSource mLastRunningWifiUids = new WorkSource(); 983 984 private final IBatteryStats mBatteryStats; 985 986 private String mTcpBufferSizes = null; 987 988 // Used for debug and stats gathering 989 private static int sScanAlarmIntentCount = 0; 990 991 final static int frameworkMinScanIntervalSaneValue = 10000; 992 993 public WifiStateMachine(Context context, String wlanInterface, 994 WifiTrafficPoller trafficPoller) { 995 super("WifiStateMachine"); 996 mContext = context; 997 mSetCountryCode = Settings.Global.getString( 998 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 999 mInterfaceName = wlanInterface; 1000 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 1001 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 1002 BatteryStats.SERVICE_NAME)); 1003 1004 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1005 mNwService = INetworkManagementService.Stub.asInterface(b); 1006 1007 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 1008 PackageManager.FEATURE_WIFI_DIRECT); 1009 1010 mWifiNative = new WifiNative(mInterfaceName); 1011 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 1012 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 1013 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 1014 mWifiMonitor = new WifiMonitor(this, mWifiNative); 1015 mWifiLogger = new WifiLogger(); 1016 1017 mWifiInfo = new WifiInfo(); 1018 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 1019 getHandler()); 1020 mLinkProperties = new LinkProperties(); 1021 1022 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 1023 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 1024 1025 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 1026 1027 mNetworkInfo.setIsAvailable(false); 1028 mLastBssid = null; 1029 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1030 mLastSignalLevel = -1; 1031 1032 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1033 public void update() { 1034 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1035 } 1036 }); 1037 try { 1038 mNwService.registerObserver(mNetlinkTracker); 1039 } catch (RemoteException e) { 1040 loge("Couldn't register netlink tracker: " + e.toString()); 1041 } 1042 1043 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1044 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1045 1046 // Make sure the interval is not configured less than 10 seconds 1047 int period = mContext.getResources().getInteger( 1048 R.integer.config_wifi_framework_scan_interval); 1049 if (period < frameworkMinScanIntervalSaneValue) { 1050 period = frameworkMinScanIntervalSaneValue; 1051 } 1052 mDefaultFrameworkScanIntervalMs = period; 1053 mDriverStopDelayMs = mContext.getResources().getInteger( 1054 R.integer.config_wifi_driver_stop_delay); 1055 1056 mBackgroundScanSupported = mContext.getResources().getBoolean( 1057 R.bool.config_wifi_background_scan_support); 1058 1059 mPrimaryDeviceType = mContext.getResources().getString( 1060 R.string.config_wifi_p2p_device_type); 1061 1062 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1063 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1064 1065 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1066 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1067 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1068 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1069 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1070 // TODO - needs to be a bit more dynamic 1071 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1072 1073 mContext.registerReceiver( 1074 new BroadcastReceiver() { 1075 @Override 1076 public void onReceive(Context context, Intent intent) { 1077 ArrayList<String> available = intent.getStringArrayListExtra( 1078 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1079 ArrayList<String> active = intent.getStringArrayListExtra( 1080 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1081 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1082 } 1083 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1084 1085 mContext.registerReceiver( 1086 new BroadcastReceiver() { 1087 @Override 1088 public void onReceive(Context context, Intent intent) { 1089 sScanAlarmIntentCount++; // Used for debug only 1090 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1091 if (VDBG) 1092 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1093 } 1094 }, 1095 new IntentFilter(ACTION_START_SCAN)); 1096 1097 IntentFilter filter = new IntentFilter(); 1098 filter.addAction(Intent.ACTION_SCREEN_ON); 1099 filter.addAction(Intent.ACTION_SCREEN_OFF); 1100 mContext.registerReceiver( 1101 new BroadcastReceiver() { 1102 @Override 1103 public void onReceive(Context context, Intent intent) { 1104 String action = intent.getAction(); 1105 1106 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1107 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1108 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1109 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1110 } 1111 } 1112 }, filter); 1113 1114 mContext.registerReceiver( 1115 new BroadcastReceiver() { 1116 @Override 1117 public void onReceive(Context context, Intent intent) { 1118 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1119 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1120 } 1121 }, 1122 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1123 1124 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1125 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1126 new ContentObserver(getHandler()) { 1127 @Override 1128 public void onChange(boolean selfChange) { 1129 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1130 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1131 } 1132 }); 1133 1134 mContext.registerReceiver( 1135 new BroadcastReceiver() { 1136 @Override 1137 public void onReceive(Context context, Intent intent) { 1138 sendMessage(CMD_BOOT_COMPLETED); 1139 } 1140 }, 1141 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1142 1143 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1144 1145 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1146 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1147 1148 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1149 mSuspendWakeLock.setReferenceCounted(false); 1150 1151 mTcpBufferSizes = mContext.getResources().getString( 1152 com.android.internal.R.string.config_wifi_tcp_buffers); 1153 1154 addState(mDefaultState); 1155 addState(mInitialState, mDefaultState); 1156 addState(mSupplicantStartingState, mDefaultState); 1157 addState(mSupplicantStartedState, mDefaultState); 1158 addState(mDriverStartingState, mSupplicantStartedState); 1159 addState(mDriverStartedState, mSupplicantStartedState); 1160 addState(mScanModeState, mDriverStartedState); 1161 addState(mConnectModeState, mDriverStartedState); 1162 addState(mL2ConnectedState, mConnectModeState); 1163 addState(mObtainingIpState, mL2ConnectedState); 1164 addState(mVerifyingLinkState, mL2ConnectedState); 1165 addState(mConnectedState, mL2ConnectedState); 1166 addState(mRoamingState, mL2ConnectedState); 1167 addState(mDisconnectingState, mConnectModeState); 1168 addState(mDisconnectedState, mConnectModeState); 1169 addState(mWpsRunningState, mConnectModeState); 1170 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1171 addState(mDriverStoppingState, mSupplicantStartedState); 1172 addState(mDriverStoppedState, mSupplicantStartedState); 1173 addState(mSupplicantStoppingState, mDefaultState); 1174 addState(mSoftApStartingState, mDefaultState); 1175 addState(mSoftApStartedState, mDefaultState); 1176 addState(mTetheringState, mSoftApStartedState); 1177 addState(mTetheredState, mSoftApStartedState); 1178 addState(mUntetheringState, mSoftApStartedState); 1179 1180 setInitialState(mInitialState); 1181 1182 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1183 setLogOnlyTransitions(false); 1184 if (VDBG) setDbg(true); 1185 1186 //start the state machine 1187 start(); 1188 1189 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1190 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1191 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1192 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1193 } 1194 1195 1196 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1197 Intent intent = new Intent(action, null); 1198 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1199 intent.setPackage(this.getClass().getPackage().getName()); 1200 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1201 } 1202 1203 private int mVerboseLoggingLevel = 0; 1204 1205 int getVerboseLoggingLevel() { 1206 return mVerboseLoggingLevel; 1207 } 1208 1209 void enableVerboseLogging(int verbose) { 1210 mVerboseLoggingLevel = verbose; 1211 if (verbose > 0) { 1212 DBG = true; 1213 VDBG = true; 1214 PDBG = true; 1215 mLogMessages = true; 1216 mWifiNative.setSupplicantLogLevel("DEBUG"); 1217 } else { 1218 DBG = false; 1219 VDBG = false; 1220 PDBG = false; 1221 mLogMessages = false; 1222 mWifiNative.setSupplicantLogLevel("INFO"); 1223 } 1224 mWifiAutoJoinController.enableVerboseLogging(verbose); 1225 mWifiMonitor.enableVerboseLogging(verbose); 1226 mWifiNative.enableVerboseLogging(verbose); 1227 mWifiConfigStore.enableVerboseLogging(verbose); 1228 mSupplicantStateTracker.enableVerboseLogging(verbose); 1229 } 1230 1231 private int mAggressiveHandover = 0; 1232 1233 int getAggressiveHandover() { 1234 return mAggressiveHandover; 1235 } 1236 1237 void enableAggressiveHandover(int enabled) { 1238 mAggressiveHandover = enabled; 1239 } 1240 1241 public void clearANQPCache() { 1242 mWifiConfigStore.clearANQPCache(); 1243 } 1244 1245 public void setAllowScansWithTraffic(int enabled) { 1246 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1247 } 1248 1249 public int getAllowScansWithTraffic() { 1250 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1251 } 1252 1253 public void setAllowScansWhileAssociated(boolean enabled) { 1254 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled); 1255 } 1256 1257 public boolean getAllowScansWhileAssociated() { 1258 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 1259 } 1260 1261 /* 1262 * 1263 * Framework scan control 1264 */ 1265 1266 private boolean mAlarmEnabled = false; 1267 1268 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1269 1270 private void setScanAlarm(boolean enabled) { 1271 if (PDBG) { 1272 loge("setScanAlarm " + enabled 1273 + " period " + mDefaultFrameworkScanIntervalMs 1274 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1275 } 1276 if (mBackgroundScanSupported == false) { 1277 // Scan alarm is only used for background scans if they are not 1278 // offloaded to the wifi chipset, hence enable the scan alarm 1279 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1280 enabled = true; 1281 } 1282 1283 if (enabled == mAlarmEnabled) return; 1284 if (enabled) { 1285 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1286 /* going to wake up the host processor to look for access points */ 1287 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1288 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1289 mScanIntent); 1290 mAlarmEnabled = true; 1291 } else { 1292 mAlarmManager.cancel(mScanIntent); 1293 mAlarmEnabled = false; 1294 } 1295 } 1296 1297 private void cancelDelayedScan() { 1298 mDelayedScanCounter.incrementAndGet(); 1299 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1300 } 1301 1302 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1303 ScanSettings settings, WorkSource workSource) { 1304 1305 if (counter != mDelayedScanCounter.get()) { 1306 return false; 1307 } 1308 if (restart) 1309 startDelayedScan(milli, settings, workSource); 1310 return true; 1311 } 1312 1313 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1314 if (milli <= 0) return; 1315 /** 1316 * The cases where the scan alarm should be run are : 1317 * - DisconnectedState && screenOn => used delayed timer 1318 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1319 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1320 * - ConnectedState && screenOn => used delayed timer 1321 */ 1322 1323 mDelayedScanCounter.incrementAndGet(); 1324 if (mScreenOn && 1325 (getCurrentState() == mDisconnectedState 1326 || getCurrentState() == mConnectedState)) { 1327 Bundle bundle = new Bundle(); 1328 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1329 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1330 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1331 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1332 mDelayedScanCounter.get(), bundle, milli); 1333 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1334 } else if (mBackgroundScanSupported == false 1335 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1336 setScanAlarm(true); 1337 if (DBG) loge("startDelayedScan start scan alarm -> " 1338 + mDelayedScanCounter + " milli " + milli); 1339 } else { 1340 if (DBG) loge("startDelayedScan unhandled -> " 1341 + mDelayedScanCounter + " milli " + milli); 1342 } 1343 } 1344 1345 private boolean setRandomMacOui() { 1346 String oui = mContext.getResources().getString( 1347 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1348 String[] ouiParts = oui.split("-"); 1349 byte[] ouiBytes = new byte[3]; 1350 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1351 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1352 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1353 1354 logd("Setting OUI to " + oui); 1355 return mWifiNative.setScanningMacOui(ouiBytes); 1356 } 1357 1358 /** 1359 * ****************************************************** 1360 * Methods exposed for public use 1361 * ****************************************************** 1362 */ 1363 1364 public Messenger getMessenger() { 1365 return new Messenger(getHandler()); 1366 } 1367 1368 public WifiMonitor getWifiMonitor() { 1369 return mWifiMonitor; 1370 } 1371 1372 /** 1373 * TODO: doc 1374 */ 1375 public boolean syncPingSupplicant(AsyncChannel channel) { 1376 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1377 boolean result = (resultMsg.arg1 != FAILURE); 1378 resultMsg.recycle(); 1379 return result; 1380 } 1381 1382 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1383 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1384 List<WifiChannel> list = null; 1385 if (resultMsg.obj != null) { 1386 list = new ArrayList<WifiChannel>(); 1387 String freqs = (String) resultMsg.obj; 1388 String[] lines = freqs.split("\n"); 1389 for (String line : lines) 1390 if (line.contains("MHz")) { 1391 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1392 WifiChannel c = new WifiChannel(); 1393 String[] prop = line.split(" "); 1394 if (prop.length < 5) continue; 1395 try { 1396 c.channelNum = Integer.parseInt(prop[1]); 1397 c.freqMHz = Integer.parseInt(prop[3]); 1398 } catch (NumberFormatException e) { 1399 } 1400 c.isDFS = line.contains("(DFS)"); 1401 list.add(c); 1402 } else if (line.contains("Mode[B] Channels:")) { 1403 // B channels are the same as G channels, skipped 1404 break; 1405 } 1406 } 1407 resultMsg.recycle(); 1408 return (list != null && list.size() > 0) ? list : null; 1409 } 1410 1411 /** 1412 * When settings allowing making use of untrusted networks change, trigger a scan 1413 * so as to kick of autojoin. 1414 */ 1415 public void startScanForUntrustedSettingChange() { 1416 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1417 } 1418 1419 /** 1420 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1421 * given to callingUid. 1422 * 1423 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1424 * workSource is specified. 1425 * @param workSource If not null, blame is given to workSource. 1426 * @param settings Scan settings, see {@link ScanSettings}. 1427 */ 1428 public void startScan(int callingUid, int scanCounter, 1429 ScanSettings settings, WorkSource workSource) { 1430 Bundle bundle = new Bundle(); 1431 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1432 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1433 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1434 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1435 } 1436 1437 // called from BroadcastListener 1438 1439 /** 1440 * Start reading new scan data 1441 * Data comes in as: 1442 * "scancount=5\n" 1443 * "nextcount=5\n" 1444 * "apcount=3\n" 1445 * "trunc\n" (optional) 1446 * "bssid=...\n" 1447 * "ssid=...\n" 1448 * "freq=...\n" (in Mhz) 1449 * "level=...\n" 1450 * "dist=...\n" (in cm) 1451 * "distsd=...\n" (standard deviation, in cm) 1452 * "====" 1453 * "bssid=...\n" 1454 * etc 1455 * "====" 1456 * "bssid=...\n" 1457 * etc 1458 * "%%%%" 1459 * "apcount=2\n" 1460 * "bssid=...\n" 1461 * etc 1462 * "%%%% 1463 * etc 1464 * "----" 1465 */ 1466 private final static boolean DEBUG_PARSE = false; 1467 1468 private long mDisconnectedTimeStamp = 0; 1469 1470 public long getDisconnectedTimeMilli() { 1471 if (getCurrentState() == mDisconnectedState 1472 && mDisconnectedTimeStamp != 0) { 1473 long now_ms = System.currentTimeMillis(); 1474 return now_ms - mDisconnectedTimeStamp; 1475 } 1476 return 0; 1477 } 1478 1479 // Keeping track of scan requests 1480 private long lastStartScanTimeStamp = 0; 1481 private long lastScanDuration = 0; 1482 // Last connect attempt is used to prevent scan requests: 1483 // - for a period of 10 seconds after attempting to connect 1484 private long lastConnectAttempt = 0; 1485 private String lastScanFreqs = null; 1486 1487 // For debugging, keep track of last message status handling 1488 // TODO, find an equivalent mechanism as part of parent class 1489 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1490 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1491 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1492 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1493 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1494 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1495 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1496 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1497 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1498 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1499 1500 private int messageHandlingStatus = 0; 1501 1502 //TODO: this is used only to track connection attempts, however the link state and packet per 1503 //TODO: second logic should be folded into that 1504 private boolean checkOrDeferScanAllowed(Message msg) { 1505 long now = System.currentTimeMillis(); 1506 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1507 Message dmsg = Message.obtain(msg); 1508 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1509 return false; 1510 } 1511 return true; 1512 } 1513 1514 private int mOnTime = 0; 1515 private int mTxTime = 0; 1516 private int mRxTime = 0; 1517 private int mOnTimeStartScan = 0; 1518 private int mTxTimeStartScan = 0; 1519 private int mRxTimeStartScan = 0; 1520 private int mOnTimeScan = 0; 1521 private int mTxTimeScan = 0; 1522 private int mRxTimeScan = 0; 1523 private int mOnTimeThisScan = 0; 1524 private int mTxTimeThisScan = 0; 1525 private int mRxTimeThisScan = 0; 1526 1527 private int mOnTimeScreenStateChange = 0; 1528 private int mOnTimeAtLastReport = 0; 1529 private long lastOntimeReportTimeStamp = 0; 1530 private long lastScreenStateChangeTimeStamp = 0; 1531 private int mOnTimeLastReport = 0; 1532 private int mTxTimeLastReport = 0; 1533 private int mRxTimeLastReport = 0; 1534 1535 private long lastLinkLayerStatsUpdate = 0; 1536 1537 String reportOnTime() { 1538 long now = System.currentTimeMillis(); 1539 StringBuilder sb = new StringBuilder(); 1540 // Report stats since last report 1541 int on = mOnTime - mOnTimeLastReport; 1542 mOnTimeLastReport = mOnTime; 1543 int tx = mTxTime - mTxTimeLastReport; 1544 mTxTimeLastReport = mTxTime; 1545 int rx = mRxTime - mRxTimeLastReport; 1546 mRxTimeLastReport = mRxTime; 1547 int period = (int) (now - lastOntimeReportTimeStamp); 1548 lastOntimeReportTimeStamp = now; 1549 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1550 // Report stats since Screen State Changed 1551 on = mOnTime - mOnTimeScreenStateChange; 1552 period = (int) (now - lastScreenStateChangeTimeStamp); 1553 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1554 return sb.toString(); 1555 } 1556 1557 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1558 WifiLinkLayerStats stats = null; 1559 if (mWifiLinkLayerStatsSupported > 0) { 1560 String name = "wlan0"; 1561 stats = mWifiNative.getWifiLinkLayerStats(name); 1562 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1563 mWifiLinkLayerStatsSupported -= 1; 1564 } else if (stats != null) { 1565 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1566 mOnTime = stats.on_time; 1567 mTxTime = stats.tx_time; 1568 mRxTime = stats.rx_time; 1569 mRunningBeaconCount = stats.beacon_rx; 1570 if (dbg) { 1571 loge(stats.toString()); 1572 } 1573 } 1574 } 1575 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1576 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1577 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1578 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1579 } else { 1580 mWifiInfo.updatePacketRates(stats); 1581 } 1582 return stats; 1583 } 1584 1585 void startRadioScanStats() { 1586 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1587 if (stats != null) { 1588 mOnTimeStartScan = stats.on_time; 1589 mTxTimeStartScan = stats.tx_time; 1590 mRxTimeStartScan = stats.rx_time; 1591 mOnTime = stats.on_time; 1592 mTxTime = stats.tx_time; 1593 mRxTime = stats.rx_time; 1594 } 1595 } 1596 1597 void closeRadioScanStats() { 1598 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1599 if (stats != null) { 1600 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1601 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1602 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1603 mOnTimeScan += mOnTimeThisScan; 1604 mTxTimeScan += mTxTimeThisScan; 1605 mRxTimeScan += mRxTimeThisScan; 1606 } 1607 } 1608 1609 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1610 private void noteScanStart(int callingUid, WorkSource workSource) { 1611 long now = System.currentTimeMillis(); 1612 lastStartScanTimeStamp = now; 1613 lastScanDuration = 0; 1614 if (DBG) { 1615 String ts = String.format("[%,d ms]", now); 1616 if (workSource != null) { 1617 loge(ts + " noteScanStart" + workSource.toString() 1618 + " uid " + Integer.toString(callingUid)); 1619 } else { 1620 loge(ts + " noteScanstart no scan source" 1621 + " uid " + Integer.toString(callingUid)); 1622 } 1623 } 1624 startRadioScanStats(); 1625 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1626 && callingUid != SCAN_ALARM_SOURCE) 1627 || workSource != null)) { 1628 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1629 try { 1630 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1631 } catch (RemoteException e) { 1632 log(e.toString()); 1633 } 1634 } 1635 } 1636 1637 private void noteScanEnd() { 1638 long now = System.currentTimeMillis(); 1639 if (lastStartScanTimeStamp != 0) { 1640 lastScanDuration = now - lastStartScanTimeStamp; 1641 } 1642 lastStartScanTimeStamp = 0; 1643 if (DBG) { 1644 String ts = String.format("[%,d ms]", now); 1645 if (mScanWorkSource != null) 1646 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1647 + " onTime=" + mOnTimeThisScan); 1648 else 1649 loge(ts + " noteScanEnd no scan source" 1650 + " onTime=" + mOnTimeThisScan); 1651 } 1652 if (mScanWorkSource != null) { 1653 try { 1654 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1655 } catch (RemoteException e) { 1656 log(e.toString()); 1657 } finally { 1658 mScanWorkSource = null; 1659 } 1660 } 1661 } 1662 1663 private void handleScanRequest(int type, Message message) { 1664 ScanSettings settings = null; 1665 WorkSource workSource = null; 1666 1667 // unbundle parameters 1668 Bundle bundle = (Bundle) message.obj; 1669 1670 if (bundle != null) { 1671 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1672 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1673 } 1674 1675 // parse scan settings 1676 String freqs = null; 1677 if (settings != null && settings.channelSet != null) { 1678 StringBuilder sb = new StringBuilder(); 1679 boolean first = true; 1680 for (WifiChannel channel : settings.channelSet) { 1681 if (!first) sb.append(','); 1682 else first = false; 1683 sb.append(channel.freqMHz); 1684 } 1685 freqs = sb.toString(); 1686 } 1687 1688 // call wifi native to start the scan 1689 if (startScanNative(type, freqs)) { 1690 // only count battery consumption if scan request is accepted 1691 noteScanStart(message.arg1, workSource); 1692 // a full scan covers everything, clearing scan request buffer 1693 if (freqs == null) 1694 mBufferedScanMsg.clear(); 1695 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1696 if (workSource != null) { 1697 // External worksource was passed along the scan request, 1698 // hence always send a broadcast 1699 mSendScanResultsBroadcast = true; 1700 } 1701 return; 1702 } 1703 1704 // if reach here, scan request is rejected 1705 1706 if (!mIsScanOngoing) { 1707 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1708 1709 // discard this request and pop up the next one 1710 if (mBufferedScanMsg.size() > 0) { 1711 sendMessage(mBufferedScanMsg.remove()); 1712 } 1713 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1714 } else if (!mIsFullScanOngoing) { 1715 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1716 // buffer the scan request to make sure specified channels will be scanned eventually 1717 if (freqs == null) 1718 mBufferedScanMsg.clear(); 1719 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1720 Message msg = obtainMessage(CMD_START_SCAN, 1721 message.arg1, message.arg2, bundle); 1722 mBufferedScanMsg.add(msg); 1723 } else { 1724 // if too many requests in buffer, combine them into a single full scan 1725 bundle = new Bundle(); 1726 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1727 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1728 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1729 mBufferedScanMsg.clear(); 1730 mBufferedScanMsg.add(msg); 1731 } 1732 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1733 } else { 1734 // mIsScanOngoing and mIsFullScanOngoing 1735 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1736 } 1737 } 1738 1739 1740 /** 1741 * return true iff scan request is accepted 1742 */ 1743 private boolean startScanNative(int type, String freqs) { 1744 if (mWifiNative.scan(type, freqs)) { 1745 mIsScanOngoing = true; 1746 mIsFullScanOngoing = (freqs == null); 1747 lastScanFreqs = freqs; 1748 return true; 1749 } 1750 return false; 1751 } 1752 1753 /** 1754 * TODO: doc 1755 */ 1756 public void setSupplicantRunning(boolean enable) { 1757 if (enable) { 1758 sendMessage(CMD_START_SUPPLICANT); 1759 } else { 1760 sendMessage(CMD_STOP_SUPPLICANT); 1761 } 1762 } 1763 1764 /** 1765 * TODO: doc 1766 */ 1767 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1768 if (enable) { 1769 sendMessage(CMD_START_AP, wifiConfig); 1770 } else { 1771 sendMessage(CMD_STOP_AP); 1772 } 1773 } 1774 1775 public void setWifiApConfiguration(WifiConfiguration config) { 1776 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1777 } 1778 1779 public WifiConfiguration syncGetWifiApConfiguration() { 1780 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1781 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1782 resultMsg.recycle(); 1783 return ret; 1784 } 1785 1786 /** 1787 * TODO: doc 1788 */ 1789 public int syncGetWifiState() { 1790 return mWifiState.get(); 1791 } 1792 1793 /** 1794 * TODO: doc 1795 */ 1796 public String syncGetWifiStateByName() { 1797 switch (mWifiState.get()) { 1798 case WIFI_STATE_DISABLING: 1799 return "disabling"; 1800 case WIFI_STATE_DISABLED: 1801 return "disabled"; 1802 case WIFI_STATE_ENABLING: 1803 return "enabling"; 1804 case WIFI_STATE_ENABLED: 1805 return "enabled"; 1806 case WIFI_STATE_UNKNOWN: 1807 return "unknown state"; 1808 default: 1809 return "[invalid state]"; 1810 } 1811 } 1812 1813 /** 1814 * TODO: doc 1815 */ 1816 public int syncGetWifiApState() { 1817 return mWifiApState.get(); 1818 } 1819 1820 /** 1821 * TODO: doc 1822 */ 1823 public String syncGetWifiApStateByName() { 1824 switch (mWifiApState.get()) { 1825 case WIFI_AP_STATE_DISABLING: 1826 return "disabling"; 1827 case WIFI_AP_STATE_DISABLED: 1828 return "disabled"; 1829 case WIFI_AP_STATE_ENABLING: 1830 return "enabling"; 1831 case WIFI_AP_STATE_ENABLED: 1832 return "enabled"; 1833 case WIFI_AP_STATE_FAILED: 1834 return "failed"; 1835 default: 1836 return "[invalid state]"; 1837 } 1838 } 1839 1840 /** 1841 * Get status information for the current connection, if any. 1842 * 1843 * @return a {@link WifiInfo} object containing information about the current connection 1844 */ 1845 public WifiInfo syncRequestConnectionInfo() { 1846 return mWifiInfo; 1847 } 1848 1849 public DhcpResults syncGetDhcpResults() { 1850 synchronized (mDhcpResultsLock) { 1851 return new DhcpResults(mDhcpResults); 1852 } 1853 } 1854 1855 /** 1856 * TODO: doc 1857 */ 1858 public void setDriverStart(boolean enable) { 1859 if (enable) { 1860 sendMessage(CMD_START_DRIVER); 1861 } else { 1862 sendMessage(CMD_STOP_DRIVER); 1863 } 1864 } 1865 1866 /** 1867 * TODO: doc 1868 */ 1869 public void setOperationalMode(int mode) { 1870 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 1871 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 1872 } 1873 1874 /** 1875 * TODO: doc 1876 */ 1877 public List<ScanResult> syncGetScanResultsList() { 1878 synchronized (mScanResultCache) { 1879 List<ScanResult> scanList = new ArrayList<ScanResult>(); 1880 for (ScanDetail result : mScanResults) { 1881 scanList.add(new ScanResult(result.getScanResult())); 1882 } 1883 return scanList; 1884 } 1885 } 1886 1887 public void disableEphemeralNetwork(String SSID) { 1888 if (SSID != null) { 1889 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 1890 } 1891 } 1892 1893 /** 1894 * Get unsynchronized pointer to scan result list 1895 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 1896 */ 1897 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 1898 return mScanResults; 1899 } 1900 1901 /** 1902 * Disconnect from Access Point 1903 */ 1904 public void disconnectCommand() { 1905 sendMessage(CMD_DISCONNECT); 1906 } 1907 1908 public void disconnectCommand(int uid, int reason) { 1909 sendMessage(CMD_DISCONNECT, uid, reason); 1910 } 1911 1912 /** 1913 * Initiate a reconnection to AP 1914 */ 1915 public void reconnectCommand() { 1916 sendMessage(CMD_RECONNECT); 1917 } 1918 1919 /** 1920 * Initiate a re-association to AP 1921 */ 1922 public void reassociateCommand() { 1923 sendMessage(CMD_REASSOCIATE); 1924 } 1925 1926 /** 1927 * Reload networks and then reconnect; helps load correct data for TLS networks 1928 */ 1929 1930 public void reloadTlsNetworksAndReconnect() { 1931 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 1932 } 1933 1934 /** 1935 * Add a network synchronously 1936 * 1937 * @return network id of the new network 1938 */ 1939 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 1940 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 1941 int result = resultMsg.arg1; 1942 resultMsg.recycle(); 1943 return result; 1944 } 1945 1946 /** 1947 * Get configured networks synchronously 1948 * 1949 * @param channel 1950 * @return 1951 */ 1952 1953 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 1954 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 1955 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 1956 resultMsg.recycle(); 1957 return result; 1958 } 1959 1960 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 1961 Message resultMsg = channel.sendMessageSynchronously( 1962 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 1963 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 1964 resultMsg.recycle(); 1965 return result; 1966 } 1967 1968 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 1969 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 1970 return (WifiConfiguration) resultMsg.obj; 1971 } 1972 1973 /** 1974 * Get connection statistics synchronously 1975 * 1976 * @param channel 1977 * @return 1978 */ 1979 1980 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 1981 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 1982 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 1983 resultMsg.recycle(); 1984 return result; 1985 } 1986 1987 /** 1988 * Get adaptors synchronously 1989 */ 1990 1991 public int syncGetSupportedFeatures(AsyncChannel channel) { 1992 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 1993 int supportedFeatureSet = resultMsg.arg1; 1994 resultMsg.recycle(); 1995 return supportedFeatureSet; 1996 } 1997 1998 /** 1999 * Get link layers stats for adapter synchronously 2000 */ 2001 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2002 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2003 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2004 resultMsg.recycle(); 2005 return result; 2006 } 2007 2008 /** 2009 * Delete a network 2010 * 2011 * @param networkId id of the network to be removed 2012 */ 2013 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2014 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2015 boolean result = (resultMsg.arg1 != FAILURE); 2016 resultMsg.recycle(); 2017 return result; 2018 } 2019 2020 /** 2021 * Enable a network 2022 * 2023 * @param netId network id of the network 2024 * @param disableOthers true, if all other networks have to be disabled 2025 * @return {@code true} if the operation succeeds, {@code false} otherwise 2026 */ 2027 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2028 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2029 disableOthers ? 1 : 0); 2030 boolean result = (resultMsg.arg1 != FAILURE); 2031 resultMsg.recycle(); 2032 return result; 2033 } 2034 2035 /** 2036 * Disable a network 2037 * 2038 * @param netId network id of the network 2039 * @return {@code true} if the operation succeeds, {@code false} otherwise 2040 */ 2041 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2042 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2043 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2044 resultMsg.recycle(); 2045 return result; 2046 } 2047 2048 /** 2049 * Retrieves a WPS-NFC configuration token for the specified network 2050 * 2051 * @return a hex string representation of the WPS-NFC configuration token 2052 */ 2053 public String syncGetWpsNfcConfigurationToken(int netId) { 2054 return mWifiNative.getNfcWpsConfigurationToken(netId); 2055 } 2056 2057 void enableBackgroundScan(boolean enable) { 2058 if (enable) { 2059 mWifiConfigStore.enableAllNetworks(); 2060 } 2061 mWifiNative.enableBackgroundScan(enable); 2062 } 2063 2064 /** 2065 * Blacklist a BSSID. This will avoid the AP if there are 2066 * alternate APs to connect 2067 * 2068 * @param bssid BSSID of the network 2069 */ 2070 public void addToBlacklist(String bssid) { 2071 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2072 } 2073 2074 /** 2075 * Clear the blacklist list 2076 */ 2077 public void clearBlacklist() { 2078 sendMessage(CMD_CLEAR_BLACKLIST); 2079 } 2080 2081 public void enableRssiPolling(boolean enabled) { 2082 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2083 } 2084 2085 public void enableAllNetworks() { 2086 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2087 } 2088 2089 /** 2090 * Start filtering Multicast v4 packets 2091 */ 2092 public void startFilteringMulticastV4Packets() { 2093 mFilteringMulticastV4Packets.set(true); 2094 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2095 } 2096 2097 /** 2098 * Stop filtering Multicast v4 packets 2099 */ 2100 public void stopFilteringMulticastV4Packets() { 2101 mFilteringMulticastV4Packets.set(false); 2102 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2103 } 2104 2105 /** 2106 * Start filtering Multicast v4 packets 2107 */ 2108 public void startFilteringMulticastV6Packets() { 2109 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2110 } 2111 2112 /** 2113 * Stop filtering Multicast v4 packets 2114 */ 2115 public void stopFilteringMulticastV6Packets() { 2116 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2117 } 2118 2119 /** 2120 * Set high performance mode of operation. 2121 * Enabling would set active power mode and disable suspend optimizations; 2122 * disabling would set auto power mode and enable suspend optimizations 2123 * 2124 * @param enable true if enable, false otherwise 2125 */ 2126 public void setHighPerfModeEnabled(boolean enable) { 2127 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2128 } 2129 2130 /** 2131 * Set the country code 2132 * 2133 * @param countryCode following ISO 3166 format 2134 * @param persist {@code true} if the setting should be remembered. 2135 */ 2136 public synchronized void setCountryCode(String countryCode, boolean persist) { 2137 // If it's a good country code, apply after the current 2138 // wifi connection is terminated; ignore resetting of code 2139 // for now (it is unclear what the chipset should do when 2140 // country code is reset) 2141 2142 if (TextUtils.isEmpty(countryCode)) { 2143 log("Ignoring resetting of country code"); 2144 } else { 2145 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2146 // else only when the new country code is different from the current one to set 2147 int countryCodeSequence = mCountryCodeSequence.get(); 2148 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2149 2150 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2151 mSetCountryCode = countryCode; 2152 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2153 countryCode); 2154 } 2155 2156 if (persist) { 2157 Settings.Global.putString(mContext.getContentResolver(), 2158 Settings.Global.WIFI_COUNTRY_CODE, 2159 countryCode); 2160 } 2161 } 2162 } 2163 2164 /** 2165 * Get Network object of current wifi network 2166 * @return Network object of current wifi network 2167 */ 2168 public Network getCurrentNetwork() { 2169 if (mNetworkAgent != null) { 2170 return new Network(mNetworkAgent.netId); 2171 } else { 2172 return null; 2173 } 2174 } 2175 2176 /** 2177 * Get the country code 2178 * 2179 * @param countryCode following ISO 3166 format 2180 */ 2181 public String getCountryCode() { 2182 return mSetCountryCode; 2183 } 2184 2185 2186 /** 2187 * Set the operational frequency band 2188 * 2189 * @param band 2190 * @param persist {@code true} if the setting should be remembered. 2191 */ 2192 public void setFrequencyBand(int band, boolean persist) { 2193 if (persist) { 2194 Settings.Global.putInt(mContext.getContentResolver(), 2195 Settings.Global.WIFI_FREQUENCY_BAND, 2196 band); 2197 } 2198 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2199 } 2200 2201 /** 2202 * Enable TDLS for a specific MAC address 2203 */ 2204 public void enableTdls(String remoteMacAddress, boolean enable) { 2205 int enabler = enable ? 1 : 0; 2206 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2207 } 2208 2209 /** 2210 * Returns the operational frequency band 2211 */ 2212 public int getFrequencyBand() { 2213 return mFrequencyBand.get(); 2214 } 2215 2216 /** 2217 * Returns the wifi configuration file 2218 */ 2219 public String getConfigFile() { 2220 return mWifiConfigStore.getConfigFile(); 2221 } 2222 2223 /** 2224 * Send a message indicating bluetooth adapter connection state changed 2225 */ 2226 public void sendBluetoothAdapterStateChange(int state) { 2227 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2228 } 2229 2230 /** 2231 * Send a message indicating a package has been uninstalled. 2232 */ 2233 public void removeAppConfigs(String packageName, int uid) { 2234 // Build partial AppInfo manually - package may not exist in database any more 2235 ApplicationInfo ai = new ApplicationInfo(); 2236 ai.packageName = packageName; 2237 ai.uid = uid; 2238 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2239 } 2240 2241 /** 2242 * Send a message indicating a user has been removed. 2243 */ 2244 public void removeUserConfigs(int userId) { 2245 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2246 } 2247 2248 /** 2249 * Save configuration on supplicant 2250 * 2251 * @return {@code true} if the operation succeeds, {@code false} otherwise 2252 * <p/> 2253 * TODO: deprecate this 2254 */ 2255 public boolean syncSaveConfig(AsyncChannel channel) { 2256 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2257 boolean result = (resultMsg.arg1 != FAILURE); 2258 resultMsg.recycle(); 2259 return result; 2260 } 2261 2262 public void updateBatteryWorkSource(WorkSource newSource) { 2263 synchronized (mRunningWifiUids) { 2264 try { 2265 if (newSource != null) { 2266 mRunningWifiUids.set(newSource); 2267 } 2268 if (mIsRunning) { 2269 if (mReportedRunning) { 2270 // If the work source has changed since last time, need 2271 // to remove old work from battery stats. 2272 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2273 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2274 mRunningWifiUids); 2275 mLastRunningWifiUids.set(mRunningWifiUids); 2276 } 2277 } else { 2278 // Now being started, report it. 2279 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2280 mLastRunningWifiUids.set(mRunningWifiUids); 2281 mReportedRunning = true; 2282 } 2283 } else { 2284 if (mReportedRunning) { 2285 // Last reported we were running, time to stop. 2286 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2287 mLastRunningWifiUids.clear(); 2288 mReportedRunning = false; 2289 } 2290 } 2291 mWakeLock.setWorkSource(newSource); 2292 } catch (RemoteException ignore) { 2293 } 2294 } 2295 } 2296 2297 @Override 2298 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2299 super.dump(fd, pw, args); 2300 mSupplicantStateTracker.dump(fd, pw, args); 2301 pw.println("mLinkProperties " + mLinkProperties); 2302 pw.println("mWifiInfo " + mWifiInfo); 2303 pw.println("mDhcpResults " + mDhcpResults); 2304 pw.println("mNetworkInfo " + mNetworkInfo); 2305 pw.println("mLastSignalLevel " + mLastSignalLevel); 2306 pw.println("mLastBssid " + mLastBssid); 2307 pw.println("mLastNetworkId " + mLastNetworkId); 2308 pw.println("mOperationalMode " + mOperationalMode); 2309 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2310 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2311 pw.println("Supplicant status " + mWifiNative.status(true)); 2312 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2313 pw.println("mSetCountryCode " + mSetCountryCode); 2314 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2315 mNetworkFactory.dump(fd, pw, args); 2316 mUntrustedNetworkFactory.dump(fd, pw, args); 2317 pw.println(); 2318 mWifiConfigStore.dump(fd, pw, args); 2319 pw.println("FW Version is: " + mWifiLogger.getFirmwareVersion()); 2320 pw.println("Driver Version is: " + mWifiLogger.getDriverVersion()); 2321 WifiLogger.RingBufferStatus[] status = mWifiLogger.getRingBufferStatus(); 2322 for (WifiLogger.RingBufferStatus element : status) { 2323 pw.println("Ring buffer status: " + element); 2324 } 2325 mWifiLogger.getAllRingBufferData(); 2326 pw.println("Start fw memory dump:-----------------------------------------------"); 2327 String fwDump = mWifiLogger.getFwMemoryDump(); 2328 if(fwDump != null) { 2329 pw.println(fwDump); 2330 } else { 2331 pw.println("Fail to get FW memory dump"); 2332 } 2333 pw.println("End fw memory dump:--------------------------------------------------"); 2334 } 2335 2336 /** 2337 * ****************************************************** 2338 * Internal private functions 2339 * ****************************************************** 2340 */ 2341 2342 private void logStateAndMessage(Message message, String state) { 2343 messageHandlingStatus = 0; 2344 if (mLogMessages) { 2345 //long now = SystemClock.elapsedRealtimeNanos(); 2346 //String ts = String.format("[%,d us]", now/1000); 2347 2348 loge(" " + state + " " + getLogRecString(message)); 2349 } 2350 } 2351 2352 /** 2353 * helper, prints the milli time since boot wi and w/o suspended time 2354 */ 2355 String printTime() { 2356 StringBuilder sb = new StringBuilder(); 2357 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2358 sb.append("/").append(SystemClock.elapsedRealtime()); 2359 return sb.toString(); 2360 } 2361 2362 /** 2363 * Return the additional string to be logged by LogRec, default 2364 * 2365 * @param msg that was processed 2366 * @return information to be logged as a String 2367 */ 2368 protected String getLogRecString(Message msg) { 2369 WifiConfiguration config; 2370 Long now; 2371 String report; 2372 String key; 2373 StringBuilder sb = new StringBuilder(); 2374 if (mScreenOn) { 2375 sb.append("!"); 2376 } 2377 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2378 sb.append("(").append(messageHandlingStatus).append(")"); 2379 } 2380 sb.append(smToString(msg)); 2381 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2382 sb.append(" uid=" + msg.sendingUid); 2383 } 2384 switch (msg.what) { 2385 case CMD_STARTED_PNO_DBG: 2386 sb.append(" "); 2387 sb.append(Integer.toString(msg.arg1)); 2388 sb.append(" "); 2389 sb.append(Integer.toString(msg.arg2)); 2390 if (msg.obj != null) { 2391 sb.append((String)msg.obj); 2392 } 2393 break; 2394 case CMD_PNO_NETWORK_FOUND: 2395 sb.append(" "); 2396 sb.append(Integer.toString(msg.arg1)); 2397 sb.append(" "); 2398 sb.append(Integer.toString(msg.arg2)); 2399 if (msg.obj != null) { 2400 ScanResult[] results = (ScanResult[])msg.obj; 2401 for (int i = 0; i < results.length; i++) { 2402 sb.append(" ").append(results[i].SSID).append(" "); 2403 sb.append(results[i].frequency); 2404 sb.append(" ").append(results[i].level); 2405 } 2406 } 2407 break; 2408 case CMD_START_SCAN: 2409 now = System.currentTimeMillis(); 2410 sb.append(" "); 2411 sb.append(Integer.toString(msg.arg1)); 2412 sb.append(" "); 2413 sb.append(Integer.toString(msg.arg2)); 2414 sb.append(" ic="); 2415 sb.append(Integer.toString(sScanAlarmIntentCount)); 2416 if (msg.obj != null) { 2417 Bundle bundle = (Bundle) msg.obj; 2418 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2419 if (request != 0) { 2420 sb.append(" proc(ms):").append(now - request); 2421 } 2422 } 2423 if (mIsScanOngoing) sb.append(" onGoing"); 2424 if (mIsFullScanOngoing) sb.append(" full"); 2425 if (lastStartScanTimeStamp != 0) { 2426 sb.append(" started:").append(lastStartScanTimeStamp); 2427 sb.append(",").append(now - lastStartScanTimeStamp); 2428 } 2429 if (lastScanDuration != 0) { 2430 sb.append(" dur:").append(lastScanDuration); 2431 } 2432 sb.append(" cnt=").append(mDelayedScanCounter); 2433 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2434 sb.append(" f=").append(mWifiInfo.getFrequency()); 2435 sb.append(" sc=").append(mWifiInfo.score); 2436 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2437 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2438 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2439 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2440 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2441 if (lastScanFreqs != null) { 2442 sb.append(" list=").append(lastScanFreqs); 2443 } else { 2444 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2445 } 2446 report = reportOnTime(); 2447 if (report != null) { 2448 sb.append(" ").append(report); 2449 } 2450 break; 2451 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2452 sb.append(" "); 2453 sb.append(Integer.toString(msg.arg1)); 2454 sb.append(" "); 2455 sb.append(Integer.toString(msg.arg2)); 2456 sb.append(printTime()); 2457 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2458 if (stateChangeResult != null) { 2459 sb.append(stateChangeResult.toString()); 2460 } 2461 break; 2462 case WifiManager.SAVE_NETWORK: 2463 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2464 sb.append(" "); 2465 sb.append(Integer.toString(msg.arg1)); 2466 sb.append(" "); 2467 sb.append(Integer.toString(msg.arg2)); 2468 if (lastSavedConfigurationAttempt != null) { 2469 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2470 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2471 if (lastSavedConfigurationAttempt.hiddenSSID) { 2472 sb.append(" hidden"); 2473 } 2474 if (lastSavedConfigurationAttempt.preSharedKey != null 2475 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2476 sb.append(" hasPSK"); 2477 } 2478 if (lastSavedConfigurationAttempt.ephemeral) { 2479 sb.append(" ephemeral"); 2480 } 2481 if (lastSavedConfigurationAttempt.selfAdded) { 2482 sb.append(" selfAdded"); 2483 } 2484 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2485 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2486 } 2487 break; 2488 case WifiManager.FORGET_NETWORK: 2489 sb.append(" "); 2490 sb.append(Integer.toString(msg.arg1)); 2491 sb.append(" "); 2492 sb.append(Integer.toString(msg.arg2)); 2493 if (lastForgetConfigurationAttempt != null) { 2494 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2495 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2496 if (lastForgetConfigurationAttempt.hiddenSSID) { 2497 sb.append(" hidden"); 2498 } 2499 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2500 sb.append(" hasPSK"); 2501 } 2502 if (lastForgetConfigurationAttempt.ephemeral) { 2503 sb.append(" ephemeral"); 2504 } 2505 if (lastForgetConfigurationAttempt.selfAdded) { 2506 sb.append(" selfAdded"); 2507 } 2508 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2509 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2510 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2511 } 2512 break; 2513 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2514 sb.append(" "); 2515 sb.append(Integer.toString(msg.arg1)); 2516 sb.append(" "); 2517 sb.append(Integer.toString(msg.arg2)); 2518 String bssid = (String) msg.obj; 2519 if (bssid != null && bssid.length() > 0) { 2520 sb.append(" "); 2521 sb.append(bssid); 2522 } 2523 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2524 sb.append(printTime()); 2525 break; 2526 case WifiMonitor.SCAN_RESULTS_EVENT: 2527 sb.append(" "); 2528 sb.append(Integer.toString(msg.arg1)); 2529 sb.append(" "); 2530 sb.append(Integer.toString(msg.arg2)); 2531 if (mScanResults != null) { 2532 sb.append(" found="); 2533 sb.append(mScanResults.size()); 2534 } 2535 sb.append(" known=").append(mNumScanResultsKnown); 2536 sb.append(" got=").append(mNumScanResultsReturned); 2537 if (lastScanDuration != 0) { 2538 sb.append(" dur:").append(lastScanDuration); 2539 } 2540 if (mOnTime != 0) { 2541 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2542 sb.append(",").append(mOnTime); 2543 } 2544 if (mTxTime != 0) { 2545 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2546 sb.append(",").append(mTxTime); 2547 } 2548 if (mRxTime != 0) { 2549 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2550 sb.append(",").append(mRxTime); 2551 } 2552 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2553 sb.append(String.format(" con=%d", mConnectionRequests)); 2554 key = mWifiConfigStore.getLastSelectedConfiguration(); 2555 if (key != null) { 2556 sb.append(" last=").append(key); 2557 } 2558 break; 2559 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2560 sb.append(" "); 2561 sb.append(Integer.toString(msg.arg1)); 2562 sb.append(" "); 2563 sb.append(Integer.toString(msg.arg2)); 2564 sb.append(" ").append(mLastBssid); 2565 sb.append(" nid=").append(mLastNetworkId); 2566 config = getCurrentWifiConfiguration(); 2567 if (config != null) { 2568 sb.append(" ").append(config.configKey()); 2569 } 2570 sb.append(printTime()); 2571 key = mWifiConfigStore.getLastSelectedConfiguration(); 2572 if (key != null) { 2573 sb.append(" last=").append(key); 2574 } 2575 break; 2576 case CMD_TARGET_BSSID: 2577 case CMD_ASSOCIATED_BSSID: 2578 sb.append(" "); 2579 sb.append(Integer.toString(msg.arg1)); 2580 sb.append(" "); 2581 sb.append(Integer.toString(msg.arg2)); 2582 if (msg.obj != null) { 2583 sb.append(" BSSID=").append((String) msg.obj); 2584 } 2585 if (mTargetRoamBSSID != null) { 2586 sb.append(" Target=").append(mTargetRoamBSSID); 2587 } 2588 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2589 sb.append(printTime()); 2590 break; 2591 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2592 if (msg.obj != null) { 2593 sb.append(" ").append((String) msg.obj); 2594 } 2595 sb.append(" nid=").append(msg.arg1); 2596 sb.append(" reason=").append(msg.arg2); 2597 if (mLastBssid != null) { 2598 sb.append(" lastbssid=").append(mLastBssid); 2599 } 2600 if (mWifiInfo.getFrequency() != -1) { 2601 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2602 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2603 } 2604 if (linkDebouncing) { 2605 sb.append(" debounce"); 2606 } 2607 sb.append(printTime()); 2608 break; 2609 case WifiMonitor.SSID_TEMP_DISABLED: 2610 case WifiMonitor.SSID_REENABLED: 2611 sb.append(" nid=").append(msg.arg1); 2612 if (msg.obj != null) { 2613 sb.append(" ").append((String) msg.obj); 2614 } 2615 config = getCurrentWifiConfiguration(); 2616 if (config != null) { 2617 sb.append(" cur=").append(config.configKey()); 2618 sb.append(" ajst=").append(config.autoJoinStatus); 2619 if (config.selfAdded) { 2620 sb.append(" selfAdded"); 2621 } 2622 if (config.status != 0) { 2623 sb.append(" st=").append(config.status); 2624 sb.append(" rs=").append(config.disableReason); 2625 } 2626 if (config.lastConnected != 0) { 2627 now = System.currentTimeMillis(); 2628 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2629 } 2630 if (mLastBssid != null) { 2631 sb.append(" lastbssid=").append(mLastBssid); 2632 } 2633 if (mWifiInfo.getFrequency() != -1) { 2634 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2635 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2636 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2637 } 2638 } 2639 sb.append(printTime()); 2640 break; 2641 case CMD_RSSI_POLL: 2642 case CMD_UNWANTED_NETWORK: 2643 case WifiManager.RSSI_PKTCNT_FETCH: 2644 sb.append(" "); 2645 sb.append(Integer.toString(msg.arg1)); 2646 sb.append(" "); 2647 sb.append(Integer.toString(msg.arg2)); 2648 if (mWifiInfo.getSSID() != null) 2649 if (mWifiInfo.getSSID() != null) 2650 sb.append(" ").append(mWifiInfo.getSSID()); 2651 if (mWifiInfo.getBSSID() != null) 2652 sb.append(" ").append(mWifiInfo.getBSSID()); 2653 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2654 sb.append(" f=").append(mWifiInfo.getFrequency()); 2655 sb.append(" sc=").append(mWifiInfo.score); 2656 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2657 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2658 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2659 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2660 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2661 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2662 report = reportOnTime(); 2663 if (report != null) { 2664 sb.append(" ").append(report); 2665 } 2666 if (wifiScoringReport != null) { 2667 sb.append(wifiScoringReport); 2668 } 2669 break; 2670 case CMD_AUTO_CONNECT: 2671 case WifiManager.CONNECT_NETWORK: 2672 sb.append(" "); 2673 sb.append(Integer.toString(msg.arg1)); 2674 sb.append(" "); 2675 sb.append(Integer.toString(msg.arg2)); 2676 config = (WifiConfiguration) msg.obj; 2677 if (config != null) { 2678 sb.append(" ").append(config.configKey()); 2679 if (config.visibility != null) { 2680 sb.append(" ").append(config.visibility.toString()); 2681 } 2682 } 2683 if (mTargetRoamBSSID != null) { 2684 sb.append(" ").append(mTargetRoamBSSID); 2685 } 2686 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2687 sb.append(printTime()); 2688 config = getCurrentWifiConfiguration(); 2689 if (config != null) { 2690 sb.append(config.configKey()); 2691 if (config.visibility != null) { 2692 sb.append(" ").append(config.visibility.toString()); 2693 } 2694 } 2695 break; 2696 case CMD_AUTO_ROAM: 2697 sb.append(" "); 2698 sb.append(Integer.toString(msg.arg1)); 2699 sb.append(" "); 2700 sb.append(Integer.toString(msg.arg2)); 2701 ScanResult result = (ScanResult) msg.obj; 2702 if (result != null) { 2703 now = System.currentTimeMillis(); 2704 sb.append(" bssid=").append(result.BSSID); 2705 sb.append(" rssi=").append(result.level); 2706 sb.append(" freq=").append(result.frequency); 2707 if (result.seen > 0 && result.seen < now) { 2708 sb.append(" seen=").append(now - result.seen); 2709 } else { 2710 // Somehow the timestamp for this scan result is inconsistent 2711 sb.append(" !seen=").append(result.seen); 2712 } 2713 } 2714 if (mTargetRoamBSSID != null) { 2715 sb.append(" ").append(mTargetRoamBSSID); 2716 } 2717 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2718 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2719 sb.append(printTime()); 2720 break; 2721 case CMD_ADD_OR_UPDATE_NETWORK: 2722 sb.append(" "); 2723 sb.append(Integer.toString(msg.arg1)); 2724 sb.append(" "); 2725 sb.append(Integer.toString(msg.arg2)); 2726 if (msg.obj != null) { 2727 config = (WifiConfiguration) msg.obj; 2728 sb.append(" ").append(config.configKey()); 2729 sb.append(" prio=").append(config.priority); 2730 sb.append(" status=").append(config.status); 2731 if (config.BSSID != null) { 2732 sb.append(" ").append(config.BSSID); 2733 } 2734 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2735 if (curConfig != null) { 2736 if (curConfig.configKey().equals(config.configKey())) { 2737 sb.append(" is current"); 2738 } else { 2739 sb.append(" current=").append(curConfig.configKey()); 2740 sb.append(" prio=").append(curConfig.priority); 2741 sb.append(" status=").append(curConfig.status); 2742 } 2743 } 2744 } 2745 break; 2746 case WifiManager.DISABLE_NETWORK: 2747 case CMD_ENABLE_NETWORK: 2748 sb.append(" "); 2749 sb.append(Integer.toString(msg.arg1)); 2750 sb.append(" "); 2751 sb.append(Integer.toString(msg.arg2)); 2752 key = mWifiConfigStore.getLastSelectedConfiguration(); 2753 if (key != null) { 2754 sb.append(" last=").append(key); 2755 } 2756 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2757 if (config != null && (key == null || !config.configKey().equals(key))) { 2758 sb.append(" target=").append(key); 2759 } 2760 break; 2761 case CMD_GET_CONFIGURED_NETWORKS: 2762 sb.append(" "); 2763 sb.append(Integer.toString(msg.arg1)); 2764 sb.append(" "); 2765 sb.append(Integer.toString(msg.arg2)); 2766 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2767 break; 2768 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2769 sb.append(" "); 2770 sb.append(Integer.toString(msg.arg1)); 2771 sb.append(" "); 2772 sb.append(Integer.toString(msg.arg2)); 2773 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2774 sb.append(",").append(mWifiInfo.txBad); 2775 sb.append(",").append(mWifiInfo.txRetries); 2776 break; 2777 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2778 sb.append(" "); 2779 sb.append(Integer.toString(msg.arg1)); 2780 sb.append(" "); 2781 sb.append(Integer.toString(msg.arg2)); 2782 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2783 sb.append(" OK "); 2784 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2785 sb.append(" FAIL "); 2786 } 2787 if (mLinkProperties != null) { 2788 if (mLinkProperties.hasIPv4Address()) { 2789 sb.append(" v4"); 2790 } 2791 if (mLinkProperties.hasGlobalIPv6Address()) { 2792 sb.append(" v6"); 2793 } 2794 if (mLinkProperties.hasIPv4DefaultRoute()) { 2795 sb.append(" v4r"); 2796 } 2797 if (mLinkProperties.hasIPv6DefaultRoute()) { 2798 sb.append(" v6r"); 2799 } 2800 if (mLinkProperties.hasIPv4DnsServer()) { 2801 sb.append(" v4dns"); 2802 } 2803 if (mLinkProperties.hasIPv6DnsServer()) { 2804 sb.append(" v6dns"); 2805 } 2806 } 2807 break; 2808 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2809 sb.append(" "); 2810 sb.append(Integer.toString(msg.arg1)); 2811 sb.append(" "); 2812 sb.append(Integer.toString(msg.arg2)); 2813 if (msg.obj != null) { 2814 NetworkInfo info = (NetworkInfo) msg.obj; 2815 NetworkInfo.State state = info.getState(); 2816 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2817 if (state != null) { 2818 sb.append(" st=").append(state); 2819 } 2820 if (detailedState != null) { 2821 sb.append("/").append(detailedState); 2822 } 2823 } 2824 break; 2825 case CMD_IP_CONFIGURATION_LOST: 2826 int count = -1; 2827 WifiConfiguration c = getCurrentWifiConfiguration(); 2828 if (c != null) count = c.numIpConfigFailures; 2829 sb.append(" "); 2830 sb.append(Integer.toString(msg.arg1)); 2831 sb.append(" "); 2832 sb.append(Integer.toString(msg.arg2)); 2833 sb.append(" failures: "); 2834 sb.append(Integer.toString(count)); 2835 sb.append("/"); 2836 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2837 if (mWifiInfo.getBSSID() != null) { 2838 sb.append(" ").append(mWifiInfo.getBSSID()); 2839 } 2840 if (c != null) { 2841 ScanDetailCache scanDetailCache = 2842 mWifiConfigStore.getScanDetailCache(c); 2843 if (scanDetailCache != null) { 2844 for (ScanDetail sd : scanDetailCache.values()) { 2845 ScanResult r = sd.getScanResult(); 2846 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2847 sb.append(" ipfail=").append(r.numIpConfigFailures); 2848 sb.append(",st=").append(r.autoJoinStatus); 2849 } 2850 } 2851 } 2852 sb.append(" -> ajst=").append(c.autoJoinStatus); 2853 sb.append(" ").append(c.disableReason); 2854 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2855 sb.append(",").append(mWifiInfo.txBad); 2856 sb.append(",").append(mWifiInfo.txRetries); 2857 } 2858 sb.append(printTime()); 2859 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2860 break; 2861 case CMD_UPDATE_LINKPROPERTIES: 2862 sb.append(" "); 2863 sb.append(Integer.toString(msg.arg1)); 2864 sb.append(" "); 2865 sb.append(Integer.toString(msg.arg2)); 2866 if (mLinkProperties != null) { 2867 if (mLinkProperties.hasIPv4Address()) { 2868 sb.append(" v4"); 2869 } 2870 if (mLinkProperties.hasGlobalIPv6Address()) { 2871 sb.append(" v6"); 2872 } 2873 if (mLinkProperties.hasIPv4DefaultRoute()) { 2874 sb.append(" v4r"); 2875 } 2876 if (mLinkProperties.hasIPv6DefaultRoute()) { 2877 sb.append(" v6r"); 2878 } 2879 if (mLinkProperties.hasIPv4DnsServer()) { 2880 sb.append(" v4dns"); 2881 } 2882 if (mLinkProperties.hasIPv6DnsServer()) { 2883 sb.append(" v6dns"); 2884 } 2885 } 2886 break; 2887 case CMD_IP_REACHABILITY_LOST: 2888 if (msg.obj != null) { 2889 sb.append(" ").append((String) msg.obj); 2890 } 2891 break; 2892 case CMD_SET_COUNTRY_CODE: 2893 sb.append(" "); 2894 sb.append(Integer.toString(msg.arg1)); 2895 sb.append(" "); 2896 sb.append(Integer.toString(msg.arg2)); 2897 if (msg.obj != null) { 2898 sb.append(" ").append((String) msg.obj); 2899 } 2900 break; 2901 case CMD_ROAM_WATCHDOG_TIMER: 2902 sb.append(" "); 2903 sb.append(Integer.toString(msg.arg1)); 2904 sb.append(" "); 2905 sb.append(Integer.toString(msg.arg2)); 2906 sb.append(" cur=").append(roamWatchdogCount); 2907 break; 2908 case CMD_DISCONNECTING_WATCHDOG_TIMER: 2909 sb.append(" "); 2910 sb.append(Integer.toString(msg.arg1)); 2911 sb.append(" "); 2912 sb.append(Integer.toString(msg.arg2)); 2913 sb.append(" cur=").append(disconnectingWatchdogCount); 2914 break; 2915 default: 2916 sb.append(" "); 2917 sb.append(Integer.toString(msg.arg1)); 2918 sb.append(" "); 2919 sb.append(Integer.toString(msg.arg2)); 2920 break; 2921 } 2922 2923 return sb.toString(); 2924 } 2925 2926 private void stopPno() { 2927 2928 // Stop PNO scans while we are trying to associate 2929 mWifiScanner.stopBackgroundScan(mWifiScanListener); 2930 2931 // clear the PNO list 2932 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 2933 Log.e(TAG, "Failed to stop pno"); 2934 } 2935 2936 } 2937 2938 // In associated more, lazy roam will be looking for 5GHz roam candidate 2939 private boolean configureLazyRoam() { 2940 boolean status; 2941 if (!mAlwaysOnPnoSupported || (!mWifiConfigStore.enableHalBasedPno.get())) return false; 2942 2943 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 2944 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 2945 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 2946 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 2947 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 2948 params.A_band_max_boost = 50; 2949 params.lazy_roam_hysteresis = 25; 2950 params.alert_roam_rssi_trigger = -75; 2951 2952 loge("startLazyRoam " + params.toString()); 2953 2954 if (!WifiNative.setLazyRoam(true, params)) { 2955 2956 loge("startLazyRoam couldnt program params"); 2957 2958 return false; 2959 } 2960 return true; 2961 } 2962 2963 // This function sends a background scan request for the current configuration 2964 private boolean setScanSettingsForLazyRoam() { 2965 2966 WifiConfiguration config = getCurrentWifiConfiguration(); 2967 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 2968 ONE_HOUR_MILLI, false); 2969 if (channels != null && channels.size() != 0) { 2970 2971 // then send a scan background request so as firmware 2972 // starts looking for our networks 2973 WifiScanner.ScanSettings settings = new WifiScanner.ScanSettings(); 2974 settings.band = WifiScanner.WIFI_BAND_UNSPECIFIED; 2975 settings.channels = new WifiScanner.ChannelSpec[channels.size()]; 2976 int i = 0; 2977 2978 StringBuilder sb = new StringBuilder(); 2979 for (Integer channel : channels) { 2980 settings.channels[i++] = new WifiScanner.ChannelSpec(channel); 2981 sb.append(" " + channel); 2982 } 2983 2984 // TODO, fix the scan interval logic 2985 if (mScreenOn) 2986 settings.periodInMs = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 2987 else 2988 settings.periodInMs = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 2989 2990 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 2991 log("startLazyRoam: scan interval " + settings.periodInMs 2992 + " screen " + mScreenOn 2993 + " channels " + channels.size() + " : " + sb.toString()); 2994 2995 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 2996 2997 2998 } else { 2999 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 3000 return false; 3001 } 3002 3003 3004 3005 3006 return true; 3007 } 3008 3009 // In associated more, lazy roam will be looking for 5GHz roam candidate 3010 private boolean stopLazyRoam() { 3011 boolean status; 3012 if (!mAlwaysOnPnoSupported || (!mWifiConfigStore.enableHalBasedPno.get())) return false; 3013 3014 return WifiNative.setLazyRoam(false, null); 3015 } 3016 3017 private boolean startPno() { 3018 if (!mAlwaysOnPnoSupported || (!mWifiConfigStore.enableHalBasedPno.get())) return false; 3019 3020 /* 3021 if (mWifiScannerChannel == null) { 3022 log("startPno: mWifiScannerChannel is null "); 3023 return false; 3024 }*/ 3025 if (mWifiScanner == null) { 3026 log("startPno: mWifiScanner is null "); 3027 return true; 3028 } 3029 3030 List<WifiNative.WifiPnoNetwork> llist 3031 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3032 if (llist == null) { 3033 log("startPno: couldnt get PNO list "); 3034 return false; 3035 } 3036 log("startPno: got llist size " + llist.size()); 3037 3038 // first program the network we want to look for thru the pno API 3039 WifiNative.WifiPnoNetwork list[] 3040 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3041 3042 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3043 Log.e(TAG, "Failed to set pno, length = " + list.length); 3044 } 3045 3046 // then send a scan background request so as firmware 3047 // starts looking for our networks 3048 WifiScanner.ScanSettings settings = new WifiScanner.ScanSettings(); 3049 settings.band = WifiScanner.WIFI_BAND_BOTH; 3050 3051 // TODO, fix the scan interval logic 3052 if (mScreenOn) 3053 settings.periodInMs = mDefaultFrameworkScanIntervalMs; 3054 else 3055 settings.periodInMs = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 3056 3057 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3058 log("startPno: settings BOTH_BANDS, length = " + list.length); 3059 3060 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3061// mWifiScannerChannel.sendMessage 3062// (WifiScanner.CMD_START_BACKGROUND_SCAN, settings); 3063 if (DBG) { 3064 StringBuilder sb = new StringBuilder(); 3065 sb.append(" list: "); 3066 for (WifiNative.WifiPnoNetwork net : llist) { 3067 sb.append(" ").append(net.SSID).append(" auth ").append(net.auth); 3068 } 3069 sendMessage(CMD_STARTED_PNO_DBG, 1, 0, sb.toString()); 3070 } 3071 return true; 3072 } 3073 3074 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3075 mScreenOn = screenOn; 3076 if (PDBG) { 3077 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3078 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3079 + " state " + getCurrentState().getName() 3080 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3081 } 3082 enableRssiPolling(screenOn); 3083 if (screenOn) enableAllNetworks(); 3084 if (mUserWantsSuspendOpt.get()) { 3085 if (screenOn) { 3086 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3087 } else { 3088 // Allow 2s for suspend optimizations to be set 3089 mSuspendWakeLock.acquire(2000); 3090 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3091 } 3092 } 3093 mScreenBroadcastReceived.set(true); 3094 3095 getWifiLinkLayerStats(false); 3096 mOnTimeScreenStateChange = mOnTime; 3097 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3098 mEnableBackgroundScan = mScreenOn == false; 3099 cancelDelayedScan(); 3100 3101 if (screenOn) { 3102 setScanAlarm(false); 3103 clearBlacklist(); 3104 3105 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 3106 // In either Disconnectedstate or ConnectedState, 3107 // start the scan alarm so as to enable autojoin 3108 if (getCurrentState() == mConnectedState 3109 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 3110 if (!startPno()) { 3111 // Scan after 500ms 3112 startDelayedScan(500, null, null); 3113 } 3114 } else if (getCurrentState() == mDisconnectedState) { 3115 if (!startPno()) { 3116 // Scan after 500ms 3117 startDelayedScan(500, null, null); 3118 } 3119 } 3120 } else if (startBackgroundScanIfNeeded) { 3121 // Screen Off and Disconnected and chipset doesn't support scan offload 3122 // => start scan alarm 3123 // Screen Off and Disconnected and chipset does support scan offload 3124 // => will use scan offload (i.e. background scan) 3125 if (!mAlwaysOnPnoSupported) { 3126 if (!mBackgroundScanSupported) { 3127 setScanAlarm(true); 3128 } else { 3129 mEnableBackgroundScan = true; 3130 } 3131 } 3132 } 3133 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3134 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3135 if (startBackgroundScanIfNeeded) { 3136 if (!startPno()) { 3137 // to scan for them in background, we need all networks enabled 3138 enableBackgroundScan(mEnableBackgroundScan); 3139 } 3140 } 3141 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3142 } 3143 3144 private void checkAndSetConnectivityInstance() { 3145 if (mCm == null) { 3146 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3147 } 3148 } 3149 3150 private boolean startTethering(ArrayList<String> available) { 3151 3152 boolean wifiAvailable = false; 3153 3154 checkAndSetConnectivityInstance(); 3155 3156 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3157 3158 for (String intf : available) { 3159 for (String regex : wifiRegexs) { 3160 if (intf.matches(regex)) { 3161 3162 InterfaceConfiguration ifcg = null; 3163 try { 3164 ifcg = mNwService.getInterfaceConfig(intf); 3165 if (ifcg != null) { 3166 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3167 ifcg.setLinkAddress(new LinkAddress( 3168 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3169 ifcg.setInterfaceUp(); 3170 3171 mNwService.setInterfaceConfig(intf, ifcg); 3172 } 3173 } catch (Exception e) { 3174 loge("Error configuring interface " + intf + ", :" + e); 3175 return false; 3176 } 3177 3178 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3179 loge("Error tethering on " + intf); 3180 return false; 3181 } 3182 mTetherInterfaceName = intf; 3183 return true; 3184 } 3185 } 3186 } 3187 // We found no interfaces to tether 3188 return false; 3189 } 3190 3191 private void stopTethering() { 3192 3193 checkAndSetConnectivityInstance(); 3194 3195 /* Clear the interface config to allow dhcp correctly configure new 3196 ip settings */ 3197 InterfaceConfiguration ifcg = null; 3198 try { 3199 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3200 if (ifcg != null) { 3201 ifcg.setLinkAddress( 3202 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3203 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3204 } 3205 } catch (Exception e) { 3206 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3207 } 3208 3209 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3210 loge("Untether initiate failed!"); 3211 } 3212 } 3213 3214 private boolean isWifiTethered(ArrayList<String> active) { 3215 3216 checkAndSetConnectivityInstance(); 3217 3218 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3219 for (String intf : active) { 3220 for (String regex : wifiRegexs) { 3221 if (intf.matches(regex)) { 3222 return true; 3223 } 3224 } 3225 } 3226 // We found no interfaces that are tethered 3227 return false; 3228 } 3229 3230 /** 3231 * Set the country code from the system setting value, if any. 3232 */ 3233 private void setCountryCode() { 3234 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3235 Settings.Global.WIFI_COUNTRY_CODE); 3236 if (countryCode != null && !countryCode.isEmpty()) { 3237 setCountryCode(countryCode, false); 3238 } else { 3239 //use driver default 3240 } 3241 } 3242 3243 /** 3244 * Set the frequency band from the system setting value, if any. 3245 */ 3246 private void setFrequencyBand() { 3247 int band = Settings.Global.getInt(mContext.getContentResolver(), 3248 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3249 setFrequencyBand(band, false); 3250 } 3251 3252 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3253 if (DBG) { 3254 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3255 + " -want " + mUserWantsSuspendOpt.get() 3256 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3257 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3258 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3259 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3260 } 3261 //mWifiNative.setSuspendOptimizations(enabled); 3262 3263 if (enabled) { 3264 mSuspendOptNeedsDisabled &= ~reason; 3265 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3266 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3267 if (DBG) { 3268 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3269 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3270 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3271 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3272 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3273 } 3274 mWifiNative.setSuspendOptimizations(true); 3275 } 3276 } else { 3277 mSuspendOptNeedsDisabled |= reason; 3278 mWifiNative.setSuspendOptimizations(false); 3279 } 3280 } 3281 3282 private void setSuspendOptimizations(int reason, boolean enabled) { 3283 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3284 if (enabled) { 3285 mSuspendOptNeedsDisabled &= ~reason; 3286 } else { 3287 mSuspendOptNeedsDisabled |= reason; 3288 } 3289 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3290 } 3291 3292 private void setWifiState(int wifiState) { 3293 final int previousWifiState = mWifiState.get(); 3294 3295 try { 3296 if (wifiState == WIFI_STATE_ENABLED) { 3297 mBatteryStats.noteWifiOn(); 3298 } else if (wifiState == WIFI_STATE_DISABLED) { 3299 mBatteryStats.noteWifiOff(); 3300 } 3301 } catch (RemoteException e) { 3302 loge("Failed to note battery stats in wifi"); 3303 } 3304 3305 mWifiState.set(wifiState); 3306 3307 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3308 3309 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3310 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3311 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3312 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3313 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3314 } 3315 3316 private void setWifiApState(int wifiApState) { 3317 final int previousWifiApState = mWifiApState.get(); 3318 3319 try { 3320 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3321 mBatteryStats.noteWifiOn(); 3322 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3323 mBatteryStats.noteWifiOff(); 3324 } 3325 } catch (RemoteException e) { 3326 loge("Failed to note battery stats in wifi"); 3327 } 3328 3329 // Update state 3330 mWifiApState.set(wifiApState); 3331 3332 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3333 3334 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3335 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3336 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3337 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3338 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3339 } 3340 3341 /* 3342 void ageOutScanResults(int age) { 3343 synchronized(mScanResultCache) { 3344 // Trim mScanResults, which prevent WifiStateMachine to return 3345 // obsolete scan results to queriers 3346 long now = System.CurrentTimeMillis(); 3347 for (int i = 0; i < mScanResults.size(); i++) { 3348 ScanResult result = mScanResults.get(i); 3349 if ((result.seen > now || (now - result.seen) > age)) { 3350 mScanResults.remove(i); 3351 } 3352 } 3353 } 3354 }*/ 3355 3356 private static final String IE_STR = "ie="; 3357 private static final String ID_STR = "id="; 3358 private static final String BSSID_STR = "bssid="; 3359 private static final String FREQ_STR = "freq="; 3360 private static final String LEVEL_STR = "level="; 3361 private static final String TSF_STR = "tsf="; 3362 private static final String FLAGS_STR = "flags="; 3363 private static final String SSID_STR = "ssid="; 3364 private static final String DELIMITER_STR = "===="; 3365 private static final String END_STR = "####"; 3366 3367 int emptyScanResultCount = 0; 3368 3369 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3370 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3371 3372 /** 3373 * Format: 3374 * <p/> 3375 * id=1 3376 * bssid=68:7f:76:d7:1a:6e 3377 * freq=2412 3378 * level=-44 3379 * tsf=1344626243700342 3380 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3381 * ssid=zfdy 3382 * ==== 3383 * id=2 3384 * bssid=68:5f:74:d7:1a:6f 3385 * freq=5180 3386 * level=-73 3387 * tsf=1344626243700373 3388 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3389 * ssid=zuby 3390 * ==== 3391 */ 3392 private void setScanResults() { 3393 mNumScanResultsKnown = 0; 3394 mNumScanResultsReturned = 0; 3395 String bssid = ""; 3396 int level = 0; 3397 int freq = 0; 3398 long tsf = 0; 3399 String flags = ""; 3400 WifiSsid wifiSsid = null; 3401 String scanResults; 3402 String tmpResults; 3403 StringBuffer scanResultsBuf = new StringBuffer(); 3404 int sid = 0; 3405 3406 while (true) { 3407 tmpResults = mWifiNative.scanResults(sid); 3408 if (TextUtils.isEmpty(tmpResults)) break; 3409 scanResultsBuf.append(tmpResults); 3410 scanResultsBuf.append("\n"); 3411 String[] lines = tmpResults.split("\n"); 3412 sid = -1; 3413 for (int i = lines.length - 1; i >= 0; i--) { 3414 if (lines[i].startsWith(END_STR)) { 3415 break; 3416 } else if (lines[i].startsWith(ID_STR)) { 3417 try { 3418 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3419 } catch (NumberFormatException e) { 3420 // Nothing to do 3421 } 3422 break; 3423 } 3424 } 3425 if (sid == -1) break; 3426 } 3427 3428 // Age out scan results, we return all scan results found in the last 12 seconds, 3429 // and NOT all scan results since last scan. 3430 // ageOutScanResults(12000); 3431 3432 scanResults = scanResultsBuf.toString(); 3433 if (TextUtils.isEmpty(scanResults)) { 3434 emptyScanResultCount++; 3435 if (emptyScanResultCount > 10) { 3436 // If we got too many empty scan results, the current scan cache is stale, 3437 // hence clear it. 3438 mScanResults = new ArrayList<>(); 3439 } 3440 return; 3441 } 3442 3443 emptyScanResultCount = 0; 3444 3445 // note that all these splits and substrings keep references to the original 3446 // huge string buffer while the amount we really want is generally pretty small 3447 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3448 synchronized (mScanResultCache) { 3449 mScanResults = new ArrayList<>(); 3450 String[] lines = scanResults.split("\n"); 3451 final int bssidStrLen = BSSID_STR.length(); 3452 final int flagLen = FLAGS_STR.length(); 3453 String infoElements = null; 3454 List<String> anqpLines = null; 3455 3456 for (String line : lines) { 3457 if (line.startsWith(BSSID_STR)) { 3458 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3459 } else if (line.startsWith(FREQ_STR)) { 3460 try { 3461 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3462 } catch (NumberFormatException e) { 3463 freq = 0; 3464 } 3465 } else if (line.startsWith(LEVEL_STR)) { 3466 try { 3467 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3468 /* some implementations avoid negative values by adding 256 3469 * so we need to adjust for that here. 3470 */ 3471 if (level > 0) level -= 256; 3472 } catch (NumberFormatException e) { 3473 level = 0; 3474 } 3475 } else if (line.startsWith(TSF_STR)) { 3476 try { 3477 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3478 } catch (NumberFormatException e) { 3479 tsf = 0; 3480 } 3481 } else if (line.startsWith(FLAGS_STR)) { 3482 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3483 } else if (line.startsWith(SSID_STR)) { 3484 wifiSsid = WifiSsid.createFromAsciiEncoded( 3485 line.substring(SSID_STR.length())); 3486 } else if (line.startsWith(IE_STR)) { 3487 infoElements = line; 3488 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3489 if (anqpLines == null) { 3490 anqpLines = new ArrayList<>(); 3491 } 3492 anqpLines.add(line); 3493 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3494 if (bssid != null) { 3495 try { 3496 NetworkDetail networkDetail = 3497 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3498 3499 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3500 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3501 Log.d(Utils.hs2LogTag(getClass()), 3502 String.format("Inconsistent SSID on BSSID '%s':" + 3503 " '%s' vs '%s': %s", 3504 bssid, xssid, networkDetail.getSSID(), infoElements)); 3505 } 3506 3507 if (networkDetail.hasInterworking()) { 3508 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3509 } 3510 3511 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3512 if (scanDetail != null) { 3513 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3514 flags, freq, tsf); 3515 } else { 3516 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3517 flags, level, freq, tsf); 3518 mScanResultCache.put(networkDetail, scanDetail); 3519 } 3520 3521 mNumScanResultsReturned++; // Keep track of how many scan results we got 3522 // as part of this scan's processing 3523 mScanResults.add(scanDetail); 3524 } catch (IllegalArgumentException iae) { 3525 Log.d(TAG, "Failed to parse information elements: " + iae); 3526 } 3527 } 3528 bssid = null; 3529 level = 0; 3530 freq = 0; 3531 tsf = 0; 3532 flags = ""; 3533 wifiSsid = null; 3534 infoElements = null; 3535 anqpLines = null; 3536 } 3537 } 3538 } 3539 3540 boolean attemptAutoJoin = true; 3541 SupplicantState state = mWifiInfo.getSupplicantState(); 3542 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3543 if (getCurrentState() == mRoamingState 3544 || getCurrentState() == mObtainingIpState 3545 || getCurrentState() == mScanModeState 3546 || getCurrentState() == mDisconnectingState 3547 || (getCurrentState() == mConnectedState 3548 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3549 || linkDebouncing 3550 || state == SupplicantState.ASSOCIATING 3551 || state == SupplicantState.AUTHENTICATING 3552 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3553 || state == SupplicantState.GROUP_HANDSHAKE 3554 || (/* keep autojoin enabled if user has manually selected a wifi network, 3555 so as to make sure we reliably remain connected to this network */ 3556 mConnectionRequests == 0 && selection == null)) { 3557 // Dont attempt auto-joining again while we are already attempting to join 3558 // and/or obtaining Ip address 3559 attemptAutoJoin = false; 3560 } 3561 if (DBG) { 3562 if (selection == null) { 3563 selection = "<none>"; 3564 } 3565 loge("wifi setScanResults state" + getCurrentState() 3566 + " sup_state=" + state 3567 + " debouncing=" + linkDebouncing 3568 + " mConnectionRequests=" + mConnectionRequests 3569 + " selection=" + selection); 3570 } 3571 if (attemptAutoJoin) { 3572 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3573 } 3574 // Loose last selected configuration if we have been disconnected for 5 minutes 3575 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3576 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3577 } 3578 3579 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3580 synchronized (mScanResultCache) { 3581 // AutoJoincontroller will directly acces the scan result list and update it with 3582 // ScanResult status 3583 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3584 } 3585 } 3586 if (linkDebouncing) { 3587 // If debouncing, we dont re-select a SSID or BSSID hence 3588 // there is no need to call the network selection code 3589 // in WifiAutoJoinController, instead, 3590 // just try to reconnect to the same SSID by triggering a roam 3591 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3592 } 3593 } 3594 3595 /* 3596 * Fetch RSSI, linkspeed, and frequency on current connection 3597 */ 3598 private void fetchRssiLinkSpeedAndFrequencyNative() { 3599 int newRssi = -1; 3600 int newLinkSpeed = -1; 3601 int newFrequency = -1; 3602 3603 String signalPoll = mWifiNative.signalPoll(); 3604 3605 if (signalPoll != null) { 3606 String[] lines = signalPoll.split("\n"); 3607 for (String line : lines) { 3608 String[] prop = line.split("="); 3609 if (prop.length < 2) continue; 3610 try { 3611 if (prop[0].equals("RSSI")) { 3612 newRssi = Integer.parseInt(prop[1]); 3613 } else if (prop[0].equals("LINKSPEED")) { 3614 newLinkSpeed = Integer.parseInt(prop[1]); 3615 } else if (prop[0].equals("FREQUENCY")) { 3616 newFrequency = Integer.parseInt(prop[1]); 3617 } 3618 } catch (NumberFormatException e) { 3619 //Ignore, defaults on rssi and linkspeed are assigned 3620 } 3621 } 3622 } 3623 3624 if (PDBG) { 3625 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3626 + Integer.toString(newRssi) + " linkspeed=" 3627 + Integer.toString(newLinkSpeed)); 3628 } 3629 3630 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3631 // screen out invalid values 3632 /* some implementations avoid negative values by adding 256 3633 * so we need to adjust for that here. 3634 */ 3635 if (newRssi > 0) newRssi -= 256; 3636 mWifiInfo.setRssi(newRssi); 3637 /* 3638 * Rather then sending the raw RSSI out every time it 3639 * changes, we precalculate the signal level that would 3640 * be displayed in the status bar, and only send the 3641 * broadcast if that much more coarse-grained number 3642 * changes. This cuts down greatly on the number of 3643 * broadcasts, at the cost of not informing others 3644 * interested in RSSI of all the changes in signal 3645 * level. 3646 */ 3647 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3648 if (newSignalLevel != mLastSignalLevel) { 3649 sendRssiChangeBroadcast(newRssi); 3650 } 3651 mLastSignalLevel = newSignalLevel; 3652 } else { 3653 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3654 } 3655 3656 if (newLinkSpeed != -1) { 3657 mWifiInfo.setLinkSpeed(newLinkSpeed); 3658 } 3659 if (newFrequency > 0) { 3660 if (ScanResult.is5GHz(newFrequency)) { 3661 mWifiConnectionStatistics.num5GhzConnected++; 3662 } 3663 if (ScanResult.is24GHz(newFrequency)) { 3664 mWifiConnectionStatistics.num24GhzConnected++; 3665 } 3666 mWifiInfo.setFrequency(newFrequency); 3667 } 3668 mWifiConfigStore.updateConfiguration(mWifiInfo); 3669 } 3670 3671 /** 3672 * Determine if we need to switch network: 3673 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3674 * - match the uregncy of the switch versus the packet usage at the interface 3675 */ 3676 boolean shouldSwitchNetwork(int networkDelta) { 3677 int delta; 3678 if (networkDelta <= 0) { 3679 return false; 3680 } 3681 delta = networkDelta; 3682 if (mWifiInfo != null) { 3683 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3684 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3685 // If AutoJoin while associated is not enabled, 3686 // we should never switch network when already associated 3687 delta = -1000; 3688 } else { 3689 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3690 // TODO: at the interface. We should also discriminate between ucast and mcast, 3691 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3692 // TODO: broadcasts 3693 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3694 delta -= 999; 3695 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3696 delta -= 6; 3697 } 3698 loge("WifiStateMachine shouldSwitchNetwork " 3699 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3700 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3701 + " delta " + networkDelta + " -> " + delta); 3702 } 3703 } else { 3704 loge("WifiStateMachine shouldSwitchNetwork " 3705 + " delta " + networkDelta + " -> " + delta); 3706 } 3707 if (delta > 0) { 3708 return true; 3709 } 3710 return false; 3711 } 3712 3713 // Polling has completed, hence we wont have a score anymore 3714 private void cleanWifiScore() { 3715 mWifiInfo.txBadRate = 0; 3716 mWifiInfo.txSuccessRate = 0; 3717 mWifiInfo.txRetriesRate = 0; 3718 mWifiInfo.rxSuccessRate = 0; 3719 } 3720 3721 int mBadLinkspeedcount = 0; 3722 3723 // For debug, provide information about the last scoring operation 3724 String wifiScoringReport = null; 3725 3726 private void calculateWifiScore(WifiLinkLayerStats stats) { 3727 StringBuilder sb = new StringBuilder(); 3728 3729 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3730 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3731 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3732 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3733 < mWifiConfigStore.badLinkSpeed5); 3734 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3735 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3736 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3737 >= mWifiConfigStore.goodLinkSpeed5); 3738 3739 if (isBadLinkspeed) { 3740 if (mBadLinkspeedcount < 6) 3741 mBadLinkspeedcount++; 3742 } else { 3743 if (mBadLinkspeedcount > 0) 3744 mBadLinkspeedcount--; 3745 } 3746 3747 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3748 if (isGoodLinkspeed) sb.append(" gl"); 3749 3750 /** 3751 * We want to make sure that we use the 24GHz RSSI thresholds if 3752 * there are 2.4GHz scan results 3753 * otherwise we end up lowering the score based on 5GHz values 3754 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3755 * We also might unblacklist the configuation based on 2.4GHz 3756 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3757 */ 3758 boolean use24Thresholds = false; 3759 boolean homeNetworkBoost = false; 3760 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3761 ScanDetailCache scanDetailCache = 3762 mWifiConfigStore.getScanDetailCache(currentConfiguration); 3763 if (currentConfiguration != null && scanDetailCache != null) { 3764 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 3765 if (currentConfiguration.visibility != null) { 3766 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3767 && currentConfiguration.visibility.rssi24 3768 >= (currentConfiguration.visibility.rssi5 - 2)) { 3769 use24Thresholds = true; 3770 } 3771 } 3772 if (scanDetailCache.size() <= 6 3773 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3774 && currentConfiguration.allowedKeyManagement. 3775 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3776 // A PSK network with less than 6 known BSSIDs 3777 // This is most likely a home network and thus we want to stick to wifi more 3778 homeNetworkBoost = true; 3779 } 3780 } 3781 if (homeNetworkBoost) sb.append(" hn"); 3782 if (use24Thresholds) sb.append(" u24"); 3783 3784 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3785 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3786 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3787 3788 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3789 3790 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 3791 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 3792 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 3793 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 3794 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 3795 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 3796 3797 if (isBadRSSI) sb.append(" br"); 3798 if (isLowRSSI) sb.append(" lr"); 3799 if (isHighRSSI) sb.append(" hr"); 3800 3801 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3802 if (currentConfiguration != null && 3803 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3804 if (isBadRSSI) { 3805 currentConfiguration.numTicksAtBadRSSI++; 3806 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3807 // We remained associated for a compound amount of time while passing 3808 // traffic, hence loose the corresponding user triggered disabled stats 3809 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3810 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3811 } 3812 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3813 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3814 } 3815 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3816 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3817 } 3818 currentConfiguration.numTicksAtBadRSSI = 0; 3819 } 3820 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3821 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3822 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3823 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3824 score = score - 5; 3825 penalizedDueToUserTriggeredDisconnect = 1; 3826 sb.append(" p1"); 3827 } 3828 } else if (isLowRSSI) { 3829 currentConfiguration.numTicksAtLowRSSI++; 3830 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3831 // We remained associated for a compound amount of time while passing 3832 // traffic, hence loose the corresponding user triggered disabled stats 3833 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3834 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3835 } 3836 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3837 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3838 } 3839 currentConfiguration.numTicksAtLowRSSI = 0; 3840 } 3841 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3842 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3843 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3844 score = score - 5; 3845 penalizedDueToUserTriggeredDisconnect = 2; 3846 sb.append(" p2"); 3847 } 3848 } else if (!isHighRSSI) { 3849 currentConfiguration.numTicksAtNotHighRSSI++; 3850 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3851 // We remained associated for a compound amount of time while passing 3852 // traffic, hence loose the corresponding user triggered disabled stats 3853 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3854 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3855 } 3856 currentConfiguration.numTicksAtNotHighRSSI = 0; 3857 } 3858 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3859 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3860 score = score - 5; 3861 penalizedDueToUserTriggeredDisconnect = 3; 3862 sb.append(" p3"); 3863 } 3864 } 3865 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3866 currentConfiguration.numTicksAtLowRSSI, 3867 currentConfiguration.numTicksAtNotHighRSSI)); 3868 } 3869 3870 if (PDBG) { 3871 String rssiStatus = ""; 3872 if (isBadRSSI) rssiStatus += " badRSSI "; 3873 else if (isHighRSSI) rssiStatus += " highRSSI "; 3874 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3875 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3876 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3877 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3878 + " score=" + Integer.toString(mWifiInfo.score) 3879 + rssiStatus 3880 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 3881 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3882 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3883 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3884 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3885 } 3886 3887 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3888 && (isBadRSSI || isLowRSSI)) { 3889 // Link is stuck 3890 if (mWifiInfo.linkStuckCount < 5) 3891 mWifiInfo.linkStuckCount += 1; 3892 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3893 if (PDBG) loge(" bad link -> stuck count =" 3894 + Integer.toString(mWifiInfo.linkStuckCount)); 3895 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3896 if (mWifiInfo.linkStuckCount > 0) 3897 mWifiInfo.linkStuckCount -= 1; 3898 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3899 if (PDBG) loge(" good link -> stuck count =" 3900 + Integer.toString(mWifiInfo.linkStuckCount)); 3901 } 3902 3903 sb.append(String.format(" [%d", score)); 3904 3905 if (mWifiInfo.linkStuckCount > 1) { 3906 // Once link gets stuck for more than 3 seconds, start reducing the score 3907 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3908 } 3909 sb.append(String.format(",%d", score)); 3910 3911 if (isBadLinkspeed) { 3912 score -= 4; 3913 if (PDBG) { 3914 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3915 + " score=" + Integer.toString(score)); 3916 } 3917 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3918 score += 4; // So as bad rssi alone dont kill us 3919 } 3920 sb.append(String.format(",%d", score)); 3921 3922 if (isBadRSSI) { 3923 if (mWifiInfo.badRssiCount < 7) 3924 mWifiInfo.badRssiCount += 1; 3925 } else if (isLowRSSI) { 3926 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3927 if (mWifiInfo.badRssiCount > 0) { 3928 // Decrement bad Rssi count 3929 mWifiInfo.badRssiCount -= 1; 3930 } 3931 } else { 3932 mWifiInfo.badRssiCount = 0; 3933 mWifiInfo.lowRssiCount = 0; 3934 } 3935 3936 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 3937 sb.append(String.format(",%d", score)); 3938 3939 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3940 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3941 + " --> score " + Integer.toString(score)); 3942 3943 3944 if (isHighRSSI) { 3945 score += 5; 3946 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3947 } 3948 sb.append(String.format(",%d]", score)); 3949 3950 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3951 3952 //sanitize boundaries 3953 if (score > NetworkAgent.WIFI_BASE_SCORE) 3954 score = NetworkAgent.WIFI_BASE_SCORE; 3955 if (score < 0) 3956 score = 0; 3957 3958 //report score 3959 if (score != mWifiInfo.score) { 3960 if (DBG) { 3961 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3962 } 3963 mWifiInfo.score = score; 3964 if (mNetworkAgent != null) { 3965 mNetworkAgent.sendNetworkScore(score); 3966 } 3967 } 3968 wifiScoringReport = sb.toString(); 3969 } 3970 3971 public double getTxPacketRate() { 3972 if (mWifiInfo != null) { 3973 return mWifiInfo.txSuccessRate; 3974 } 3975 return -1; 3976 } 3977 3978 public double getRxPacketRate() { 3979 if (mWifiInfo != null) { 3980 return mWifiInfo.rxSuccessRate; 3981 } 3982 return -1; 3983 } 3984 3985 /** 3986 * Fetch TX packet counters on current connection 3987 */ 3988 private void fetchPktcntNative(RssiPacketCountInfo info) { 3989 String pktcntPoll = mWifiNative.pktcntPoll(); 3990 3991 if (pktcntPoll != null) { 3992 String[] lines = pktcntPoll.split("\n"); 3993 for (String line : lines) { 3994 String[] prop = line.split("="); 3995 if (prop.length < 2) continue; 3996 try { 3997 if (prop[0].equals("TXGOOD")) { 3998 info.txgood = Integer.parseInt(prop[1]); 3999 } else if (prop[0].equals("TXBAD")) { 4000 info.txbad = Integer.parseInt(prop[1]); 4001 } 4002 } catch (NumberFormatException e) { 4003 // Ignore 4004 } 4005 } 4006 } 4007 } 4008 4009 private boolean clearIPv4Address(String iface) { 4010 try { 4011 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4012 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4013 mNwService.setInterfaceConfig(iface, ifcg); 4014 return true; 4015 } catch (RemoteException e) { 4016 return false; 4017 } 4018 } 4019 4020 private boolean isProvisioned(LinkProperties lp) { 4021 return lp.isProvisioned() || 4022 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4023 } 4024 4025 /** 4026 * Updates mLinkProperties by merging information from various sources. 4027 * <p/> 4028 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4029 * netlink, static configuration, ...). When one of these sources of information has updated 4030 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4031 * information that came from other sources. Instead, when one of those sources has new 4032 * information, we update the object that tracks the information from that source and then 4033 * call this method to apply the change to mLinkProperties. 4034 * <p/> 4035 * The information in mLinkProperties is currently obtained as follows: 4036 * - Interface name: set in the constructor. 4037 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4038 * - IPv4 routes, DNS servers, and domains: DHCP. 4039 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4040 * - HTTP proxy: the wifi config store. 4041 */ 4042 private void updateLinkProperties(int reason) { 4043 LinkProperties newLp = new LinkProperties(); 4044 4045 // Interface name, proxy, and TCP buffer sizes are locally configured. 4046 newLp.setInterfaceName(mInterfaceName); 4047 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4048 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 4049 newLp.setTcpBufferSizes(mTcpBufferSizes); 4050 } 4051 4052 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4053 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4054 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4055 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4056 newLp.addRoute(route); 4057 } 4058 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4059 newLp.addDnsServer(dns); 4060 } 4061 4062 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4063 synchronized (mDhcpResultsLock) { 4064 // Even when we're using static configuration, we don't need to look at the config 4065 // store, because static IP configuration also populates mDhcpResults. 4066 if ((mDhcpResults != null)) { 4067 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4068 newLp.addRoute(route); 4069 } 4070 for (InetAddress dns : mDhcpResults.dnsServers) { 4071 newLp.addDnsServer(dns); 4072 } 4073 newLp.setDomains(mDhcpResults.domains); 4074 } 4075 } 4076 4077 final boolean linkChanged = !newLp.equals(mLinkProperties); 4078 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4079 final boolean isProvisioned = isProvisioned(newLp); 4080 final boolean lostIPv4Provisioning = 4081 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4082 final DetailedState detailedState = getNetworkDetailedState(); 4083 4084 if (linkChanged) { 4085 if (DBG) { 4086 log("Link configuration changed for netId: " + mLastNetworkId 4087 + " old: " + mLinkProperties + " new: " + newLp); 4088 } 4089 mLinkProperties = newLp; 4090 if (mIpReachabilityMonitor != null) { 4091 mIpReachabilityMonitor.updateLinkProperties(mLinkProperties); 4092 } 4093 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4094 } 4095 4096 if (DBG) { 4097 StringBuilder sb = new StringBuilder(); 4098 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4099 sb.append(" state: " + detailedState); 4100 sb.append(" reason: " + smToString(reason)); 4101 4102 if (mLinkProperties != null) { 4103 if (mLinkProperties.hasIPv4Address()) { 4104 sb.append(" v4"); 4105 } 4106 if (mLinkProperties.hasGlobalIPv6Address()) { 4107 sb.append(" v6"); 4108 } 4109 if (mLinkProperties.hasIPv4DefaultRoute()) { 4110 sb.append(" v4r"); 4111 } 4112 if (mLinkProperties.hasIPv6DefaultRoute()) { 4113 sb.append(" v6r"); 4114 } 4115 if (mLinkProperties.hasIPv4DnsServer()) { 4116 sb.append(" v4dns"); 4117 } 4118 if (mLinkProperties.hasIPv6DnsServer()) { 4119 sb.append(" v6dns"); 4120 } 4121 if (isProvisioned) { 4122 sb.append(" isprov"); 4123 } 4124 } 4125 loge(sb.toString()); 4126 } 4127 4128 // If we just configured or lost IP configuration, do the needful. 4129 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4130 // here because those should only be called if we're attempting to connect or already 4131 // connected, whereas updateLinkProperties can be called at any time. 4132 switch (reason) { 4133 case DhcpStateMachine.DHCP_SUCCESS: 4134 case CMD_STATIC_IP_SUCCESS: 4135 // IPv4 provisioning succeded. Advance to connected state. 4136 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4137 if (!isProvisioned) { 4138 // Can never happen unless DHCP reports success but isProvisioned thinks the 4139 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4140 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4141 // TODO: disconnect here instead. If our configuration is not usable, there's no 4142 // point in staying connected, and if mLinkProperties is out of sync with 4143 // reality, that will cause problems in the future. 4144 loge("IPv4 config succeeded, but not provisioned"); 4145 } 4146 break; 4147 4148 case DhcpStateMachine.DHCP_FAILURE: 4149 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4150 // give up and disconnect. 4151 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4152 if (!isProvisioned || lostIPv4Provisioning) { 4153 sendMessage(CMD_IP_CONFIGURATION_LOST); 4154 } else { 4155 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4156 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4157 4158 // To be sure we don't get stuck with a non-working network if all we had is 4159 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4160 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4161 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4162 // necessary for provisioning, its deletion will cause us to disconnect. 4163 // 4164 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4165 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4166 // not return true if we're using DHCP and don't have an IPv4 default route. So 4167 // for now it's only here for extra redundancy. However, it will increase 4168 // robustness if we move to getting IPv4 routes from netlink as well. 4169 loge("DHCP failure: provisioned, clearing IPv4 address."); 4170 if (!clearIPv4Address(mInterfaceName)) { 4171 sendMessage(CMD_IP_CONFIGURATION_LOST); 4172 } 4173 } 4174 break; 4175 4176 case CMD_STATIC_IP_FAILURE: 4177 // Static configuration was invalid, or an error occurred in applying it. Give up. 4178 sendMessage(CMD_IP_CONFIGURATION_LOST); 4179 break; 4180 4181 case CMD_UPDATE_LINKPROPERTIES: 4182 // IP addresses, DNS servers, etc. changed. Act accordingly. 4183 if (wasProvisioned && !isProvisioned) { 4184 // We no longer have a usable network configuration. Disconnect. 4185 sendMessage(CMD_IP_CONFIGURATION_LOST); 4186 } else if (!wasProvisioned && isProvisioned) { 4187 // We have a usable IPv6-only config. Advance to connected state. 4188 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4189 } 4190 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4191 // If anything has changed and we're already connected, send out a notification. 4192 sendLinkConfigurationChangedBroadcast(); 4193 } 4194 break; 4195 } 4196 } 4197 4198 /** 4199 * Clears all our link properties. 4200 */ 4201 private void clearLinkProperties() { 4202 // Clear the link properties obtained from DHCP and netlink. 4203 synchronized (mDhcpResultsLock) { 4204 if (mDhcpResults != null) { 4205 mDhcpResults.clear(); 4206 } 4207 } 4208 mNetlinkTracker.clearLinkProperties(); 4209 if (mIpReachabilityMonitor != null) { 4210 mIpReachabilityMonitor.clearLinkProperties(); 4211 } 4212 4213 // Now clear the merged link properties. 4214 mLinkProperties.clear(); 4215 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4216 } 4217 4218 /** 4219 * try to update default route MAC address. 4220 */ 4221 private String updateDefaultRouteMacAddress(int timeout) { 4222 String address = null; 4223 for (RouteInfo route : mLinkProperties.getRoutes()) { 4224 if (route.isDefaultRoute() && route.hasGateway()) { 4225 InetAddress gateway = route.getGateway(); 4226 if (gateway instanceof Inet4Address) { 4227 if (PDBG) { 4228 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4229 + gateway.getHostAddress()); 4230 } 4231 address = macAddressFromRoute(gateway.getHostAddress()); 4232 /* The gateway's MAC address is known */ 4233 if ((address == null) && (timeout > 0)) { 4234 boolean reachable = false; 4235 try { 4236 reachable = gateway.isReachable(timeout); 4237 } catch (Exception e) { 4238 loge("updateDefaultRouteMacAddress exception reaching :" 4239 + gateway.getHostAddress()); 4240 4241 } finally { 4242 if (reachable == true) { 4243 4244 address = macAddressFromRoute(gateway.getHostAddress()); 4245 if (PDBG) { 4246 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4247 + gateway.getHostAddress() + " found " + address); 4248 } 4249 } 4250 } 4251 } 4252 if (address != null) { 4253 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4254 } 4255 } 4256 } 4257 } 4258 return address; 4259 } 4260 4261 private void sendScanResultsAvailableBroadcast() { 4262 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4263 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4264 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4265 } 4266 4267 private void sendRssiChangeBroadcast(final int newRssi) { 4268 try { 4269 mBatteryStats.noteWifiRssiChanged(newRssi); 4270 } catch (RemoteException e) { 4271 // Won't happen. 4272 } 4273 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4274 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4275 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4276 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4277 } 4278 4279 private void sendNetworkStateChangeBroadcast(String bssid) { 4280 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4281 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4282 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4283 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4284 if (bssid != null) 4285 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4286 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4287 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4288 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4289 } 4290 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4291 } 4292 4293 private void sendLinkConfigurationChangedBroadcast() { 4294 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4295 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4296 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4297 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4298 } 4299 4300 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4301 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4302 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4303 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4304 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4305 } 4306 4307 /** 4308 * Record the detailed state of a network. 4309 * 4310 * @param state the new {@code DetailedState} 4311 */ 4312 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4313 boolean hidden = false; 4314 4315 if (linkDebouncing || isRoaming()) { 4316 // There is generally a confusion in the system about colluding 4317 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4318 // which leads to multiple confusion. 4319 // 4320 // If link is de-bouncing or roaming, we already have an IP address 4321 // as well we were connected and are doing L2 cycles of 4322 // reconnecting or renewing IP address to check that we still have it 4323 // This L2 link flapping should ne be reflected into the Network state 4324 // which is the state of the WiFi Network visible to Layer 3 and applications 4325 // Note that once debouncing and roaming are completed, we will 4326 // set the Network state to where it should be, or leave it as unchanged 4327 // 4328 hidden = true; 4329 } 4330 if (DBG) { 4331 log("setDetailed state, old =" 4332 + mNetworkInfo.getDetailedState() + " and new state=" + state 4333 + " hidden=" + hidden); 4334 } 4335 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4336 // Always indicate that SSID has changed 4337 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4338 if (DBG) { 4339 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4340 } 4341 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4342 sendNetworkStateChangeBroadcast(null); 4343 } 4344 } 4345 if (hidden == true) { 4346 return false; 4347 } 4348 4349 if (state != mNetworkInfo.getDetailedState()) { 4350 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4351 if (mNetworkAgent != null) { 4352 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4353 } 4354 sendNetworkStateChangeBroadcast(null); 4355 return true; 4356 } 4357 return false; 4358 } 4359 4360 private DetailedState getNetworkDetailedState() { 4361 return mNetworkInfo.getDetailedState(); 4362 } 4363 4364 private SupplicantState handleSupplicantStateChange(Message message) { 4365 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4366 SupplicantState state = stateChangeResult.state; 4367 // Supplicant state change 4368 // [31-13] Reserved for future use 4369 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4370 // 50023 supplicant_state_changed (custom|1|5) 4371 mWifiInfo.setSupplicantState(state); 4372 // Network id is only valid when we start connecting 4373 if (SupplicantState.isConnecting(state)) { 4374 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4375 } else { 4376 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4377 } 4378 4379 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4380 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4381 4382 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4383 4384 return state; 4385 } 4386 4387 /** 4388 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4389 * using the interface, stopping DHCP & disabling interface 4390 */ 4391 private void handleNetworkDisconnect() { 4392 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4393 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4394 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4395 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4396 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4397 4398 4399 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4400 4401 stopDhcp(); 4402 4403 try { 4404 mNwService.clearInterfaceAddresses(mInterfaceName); 4405 mNwService.disableIpv6(mInterfaceName); 4406 } catch (Exception e) { 4407 loge("Failed to clear addresses or disable ipv6" + e); 4408 } 4409 4410 /* Reset data structures */ 4411 mBadLinkspeedcount = 0; 4412 mWifiInfo.reset(); 4413 linkDebouncing = false; 4414 /* Reset roaming parameters */ 4415 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4416 4417 /** 4418 * fullBandConnectedTimeIntervalMilli: 4419 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4420 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4421 * Initialize to sane value = 20 seconds 4422 */ 4423 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4424 4425 setNetworkDetailedState(DetailedState.DISCONNECTED); 4426 if (mNetworkAgent != null) { 4427 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4428 mNetworkAgent = null; 4429 } 4430 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4431 4432 /* Clear network properties */ 4433 clearLinkProperties(); 4434 4435 /* Cend event to CM & network change broadcast */ 4436 sendNetworkStateChangeBroadcast(mLastBssid); 4437 4438 /* Cancel auto roam requests */ 4439 autoRoamSetBSSID(mLastNetworkId, "any"); 4440 4441 mLastBssid = null; 4442 registerDisconnected(); 4443 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4444 } 4445 4446 private void handleSupplicantConnectionLoss() { 4447 /* Socket connection can be lost when we do a graceful shutdown 4448 * or when the driver is hung. Ensure supplicant is stopped here. 4449 */ 4450 mWifiMonitor.killSupplicant(mP2pSupported); 4451 mWifiNative.closeSupplicantConnection(); 4452 sendSupplicantConnectionChangedBroadcast(false); 4453 setWifiState(WIFI_STATE_DISABLED); 4454 } 4455 4456 void handlePreDhcpSetup() { 4457 mDhcpActive = true; 4458 if (!mBluetoothConnectionActive) { 4459 /* 4460 * There are problems setting the Wi-Fi driver's power 4461 * mode to active when bluetooth coexistence mode is 4462 * enabled or sense. 4463 * <p> 4464 * We set Wi-Fi to active mode when 4465 * obtaining an IP address because we've found 4466 * compatibility issues with some routers with low power 4467 * mode. 4468 * <p> 4469 * In order for this active power mode to properly be set, 4470 * we disable coexistence mode until we're done with 4471 * obtaining an IP address. One exception is if we 4472 * are currently connected to a headset, since disabling 4473 * coexistence would interrupt that connection. 4474 */ 4475 // Disable the coexistence mode 4476 mWifiNative.setBluetoothCoexistenceMode( 4477 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4478 } 4479 4480 // Disable power save and suspend optimizations during DHCP 4481 // Note: The order here is important for now. Brcm driver changes 4482 // power settings when we control suspend mode optimizations. 4483 // TODO: Remove this comment when the driver is fixed. 4484 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4485 mWifiNative.setPowerSave(false); 4486 4487 // Update link layer stats 4488 getWifiLinkLayerStats(false); 4489 4490 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4491 Message msg = new Message(); 4492 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4493 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4494 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4495 msg.obj = mDhcpStateMachine; 4496 mWifiP2pChannel.sendMessage(msg); 4497 } 4498 4499 4500 private boolean useLegacyDhcpClient() { 4501 return Settings.Global.getInt( 4502 mContext.getContentResolver(), 4503 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4504 } 4505 4506 private void maybeInitDhcpStateMachine() { 4507 if (mDhcpStateMachine == null) { 4508 if (useLegacyDhcpClient()) { 4509 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4510 mContext, WifiStateMachine.this, mInterfaceName); 4511 } else { 4512 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4513 mContext, WifiStateMachine.this, mInterfaceName); 4514 } 4515 } 4516 } 4517 4518 void startDhcp() { 4519 maybeInitDhcpStateMachine(); 4520 mDhcpStateMachine.registerForPreDhcpNotification(); 4521 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4522 } 4523 4524 void renewDhcp() { 4525 maybeInitDhcpStateMachine(); 4526 mDhcpStateMachine.registerForPreDhcpNotification(); 4527 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4528 } 4529 4530 void stopDhcp() { 4531 if (mDhcpStateMachine != null) { 4532 /* In case we were in middle of DHCP operation restore back powermode */ 4533 handlePostDhcpSetup(); 4534 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4535 } 4536 } 4537 4538 void handlePostDhcpSetup() { 4539 /* Restore power save and suspend optimizations */ 4540 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4541 mWifiNative.setPowerSave(true); 4542 4543 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4544 4545 // Set the coexistence mode back to its default value 4546 mWifiNative.setBluetoothCoexistenceMode( 4547 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4548 4549 mDhcpActive = false; 4550 } 4551 4552 void connectScanningService() { 4553 4554 if (mWifiScanner == null) 4555 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4556 4557 } 4558 4559 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4560 4561 if (PDBG) { 4562 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4563 loge("link address " + dhcpResults.ipAddress); 4564 } 4565 4566 synchronized (mDhcpResultsLock) { 4567 mDhcpResults = dhcpResults; 4568 } 4569 4570 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4571 if (isRoaming()) { 4572 if (addr instanceof Inet4Address) { 4573 int previousAddress = mWifiInfo.getIpAddress(); 4574 int newAddress = NetworkUtils.inetAddressToInt(addr); 4575 if (previousAddress != newAddress) { 4576 loge("handleIPv4Success, roaming and address changed" + 4577 mWifiInfo + " got: " + addr); 4578 } else { 4579 4580 } 4581 } else { 4582 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4583 addr.toString()); 4584 } 4585 } 4586 mWifiInfo.setInetAddress(addr); 4587 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4588 updateLinkProperties(reason); 4589 } 4590 4591 private void handleSuccessfulIpConfiguration() { 4592 mLastSignalLevel = -1; // Force update of signal strength 4593 WifiConfiguration c = getCurrentWifiConfiguration(); 4594 if (c != null) { 4595 // Reset IP failure tracking 4596 c.numConnectionFailures = 0; 4597 4598 // Tell the framework whether the newly connected network is trusted or untrusted. 4599 updateCapabilities(c); 4600 } 4601 if (c != null) { 4602 ScanResult result = getCurrentScanResult(); 4603 if (result == null) { 4604 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4605 c.configKey()); 4606 } else { 4607 // Clear the per BSSID failure count 4608 result.numIpConfigFailures = 0; 4609 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4610 // any BSSID, even though it may already have a non zero ip failure count, 4611 // this will typically happen if the user walks away and come back to his arrea 4612 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4613 // in supplicant for a couple of hours or a day 4614 mWifiNative.clearBlacklist(); 4615 } 4616 } 4617 } 4618 4619 private void handleIPv4Failure(int reason) { 4620 synchronized(mDhcpResultsLock) { 4621 if (mDhcpResults != null) { 4622 mDhcpResults.clear(); 4623 } 4624 } 4625 if (PDBG) { 4626 loge("wifistatemachine handleIPv4Failure"); 4627 } 4628 updateLinkProperties(reason); 4629 } 4630 4631 private void handleIpConfigurationLost() { 4632 mWifiInfo.setInetAddress(null); 4633 mWifiInfo.setMeteredHint(false); 4634 4635 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4636 "DHCP FAILURE", mWifiInfo.getBSSID()); 4637 4638 /* DHCP times out after about 30 seconds, we do a 4639 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4640 */ 4641 mWifiNative.disconnect(); 4642 } 4643 4644 // TODO: De-duplicated this and handleIpConfigurationLost(). 4645 private void handleIpReachabilityLost() { 4646 // No need to be told about any additional neighbors that might also 4647 // become unreachable--quiet them now while we start disconnecting. 4648 if (mIpReachabilityMonitor != null) { 4649 mIpReachabilityMonitor.clearLinkProperties(); 4650 } 4651 4652 mWifiInfo.setInetAddress(null); 4653 mWifiInfo.setMeteredHint(false); 4654 4655 // TODO: Determine whether to call some form of mWifiConfigStore.handleSSIDStateChange(). 4656 4657 // Disconnect via supplicant, and let autojoin retry connecting to the network. 4658 mWifiNative.disconnect(); 4659 } 4660 4661 private int convertFrequencyToChannelNumber(int frequency) { 4662 if (frequency >= 2412 && frequency <= 2484) { 4663 return (frequency -2412) / 5 + 1; 4664 } else if (frequency >= 5170 && frequency <=5825) { 4665 //DFS is included 4666 return (frequency -5170) / 5 + 34; 4667 } else { 4668 return 0; 4669 } 4670 } 4671 4672 private int chooseApChannel(int apBand) { 4673 int apChannel; 4674 int[] channel; 4675 4676 if (apBand == 0) { 4677 //for 2.4GHz, we only set the AP at channel 1,6,11 4678 apChannel = 5 * mRandom.nextInt(3) + 1; 4679 } else { 4680 //5G without DFS 4681 channel = mWifiNative.getChannelsForBand(2); 4682 if (channel != null && channel.length > 0) { 4683 apChannel = channel[mRandom.nextInt(channel.length)]; 4684 apChannel = convertFrequencyToChannelNumber(apChannel); 4685 } else { 4686 Log.e(TAG, "SoftAp do not get available channel list"); 4687 apChannel = 0; 4688 } 4689 } 4690 4691 if(DBG) { 4692 Log.d(TAG, "SoftAp set on channel " + apChannel); 4693 } 4694 4695 return apChannel; 4696 } 4697 4698 4699 /* Current design is to not set the config on a running hostapd but instead 4700 * stop and start tethering when user changes config on a running access point 4701 * 4702 * TODO: Add control channel setup through hostapd that allows changing config 4703 * on a running daemon 4704 */ 4705 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4706 // set channel 4707 final WifiConfiguration config = new WifiConfiguration(configuration); 4708 4709 if (DBG) { 4710 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4711 } 4712 //set country code through HAL Here 4713 if (mSetCountryCode != null) { 4714 if(!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 4715 if (config.apBand != 0) { 4716 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 4717 //countrycode is mandatory for 5GHz 4718 sendMessage(CMD_START_AP_FAILURE); 4719 return; 4720 } 4721 } 4722 } else { 4723 if (config.apBand != 0) { 4724 //countrycode is mandatory for 5GHz 4725 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 4726 sendMessage(CMD_START_AP_FAILURE); 4727 return; 4728 } 4729 } 4730 4731 if (config.apChannel == 0) { 4732 config.apChannel = chooseApChannel(config.apBand); 4733 if (config.apChannel == 0) { 4734 //fail to get available channel 4735 sendMessage(CMD_START_AP_FAILURE); 4736 return; 4737 } 4738 } 4739 //turn off interface 4740 if (!mWifiNative.toggleInterface(0)) { 4741 sendMessage(CMD_START_AP_FAILURE); 4742 return; 4743 } 4744 // Start hostapd on a separate thread 4745 new Thread(new Runnable() { 4746 public void run() { 4747 try { 4748 mNwService.startAccessPoint(config, mInterfaceName); 4749 } catch (Exception e) { 4750 loge("Exception in softap start " + e); 4751 try { 4752 mNwService.stopAccessPoint(mInterfaceName); 4753 mNwService.startAccessPoint(config, mInterfaceName); 4754 } catch (Exception e1) { 4755 loge("Exception in softap re-start " + e1); 4756 sendMessage(CMD_START_AP_FAILURE); 4757 return; 4758 } 4759 } 4760 if (DBG) log("Soft AP start successful"); 4761 sendMessage(CMD_START_AP_SUCCESS); 4762 } 4763 }).start(); 4764 } 4765 4766 /* 4767 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4768 * so as to record MAC address of default gateway. 4769 **/ 4770 private String macAddressFromRoute(String ipAddress) { 4771 String macAddress = null; 4772 BufferedReader reader = null; 4773 try { 4774 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4775 4776 // Skip over the line bearing colum titles 4777 String line = reader.readLine(); 4778 4779 while ((line = reader.readLine()) != null) { 4780 String[] tokens = line.split("[ ]+"); 4781 if (tokens.length < 6) { 4782 continue; 4783 } 4784 4785 // ARP column format is 4786 // Address HWType HWAddress Flags Mask IFace 4787 String ip = tokens[0]; 4788 String mac = tokens[3]; 4789 4790 if (ipAddress.equals(ip)) { 4791 macAddress = mac; 4792 break; 4793 } 4794 } 4795 4796 if (macAddress == null) { 4797 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4798 "/proc/net/arp"); 4799 } 4800 4801 } catch (FileNotFoundException e) { 4802 loge("Could not open /proc/net/arp to lookup mac address"); 4803 } catch (IOException e) { 4804 loge("Could not read /proc/net/arp to lookup mac address"); 4805 } finally { 4806 try { 4807 if (reader != null) { 4808 reader.close(); 4809 } 4810 } catch (IOException e) { 4811 // Do nothing 4812 } 4813 } 4814 return macAddress; 4815 4816 } 4817 4818 private class WifiNetworkFactory extends NetworkFactory { 4819 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4820 super(l, c, TAG, f); 4821 } 4822 4823 @Override 4824 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4825 ++mConnectionRequests; 4826 } 4827 4828 @Override 4829 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4830 --mConnectionRequests; 4831 } 4832 4833 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4834 pw.println("mConnectionRequests " + mConnectionRequests); 4835 } 4836 4837 } 4838 4839 private class UntrustedWifiNetworkFactory extends NetworkFactory { 4840 private int mUntrustedReqCount; 4841 4842 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 4843 super(l, c, tag, f); 4844 } 4845 4846 @Override 4847 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4848 if (!networkRequest.networkCapabilities.hasCapability( 4849 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4850 if (++mUntrustedReqCount == 1) { 4851 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4852 } 4853 } 4854 } 4855 4856 @Override 4857 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4858 if (!networkRequest.networkCapabilities.hasCapability( 4859 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4860 if (--mUntrustedReqCount == 0) { 4861 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4862 } 4863 } 4864 } 4865 4866 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4867 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4868 } 4869 } 4870 4871 void maybeRegisterNetworkFactory() { 4872 if (mNetworkFactory == null) { 4873 checkAndSetConnectivityInstance(); 4874 if (mCm != null) { 4875 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4876 NETWORKTYPE, mNetworkCapabilitiesFilter); 4877 mNetworkFactory.setScoreFilter(60); 4878 mNetworkFactory.register(); 4879 4880 // We can't filter untrusted network in the capabilities filter because a trusted 4881 // network would still satisfy a request that accepts untrusted ones. 4882 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 4883 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 4884 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 4885 mUntrustedNetworkFactory.register(); 4886 } 4887 } 4888 } 4889 4890 /******************************************************** 4891 * HSM states 4892 *******************************************************/ 4893 4894 class DefaultState extends State { 4895 @Override 4896 public boolean processMessage(Message message) { 4897 logStateAndMessage(message, getClass().getSimpleName()); 4898 4899 switch (message.what) { 4900 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4901 AsyncChannel ac = (AsyncChannel) message.obj; 4902 if (ac == mWifiP2pChannel) { 4903 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4904 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4905 } else { 4906 loge("WifiP2pService connection failure, error=" + message.arg1); 4907 } 4908 } else { 4909 loge("got HALF_CONNECTED for unknown channel"); 4910 } 4911 break; 4912 } 4913 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4914 AsyncChannel ac = (AsyncChannel) message.obj; 4915 if (ac == mWifiP2pChannel) { 4916 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4917 //TODO: Re-establish connection to state machine after a delay 4918 // mWifiP2pChannel.connect(mContext, getHandler(), 4919 // mWifiP2pManager.getMessenger()); 4920 } 4921 break; 4922 } 4923 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4924 mBluetoothConnectionActive = (message.arg1 != 4925 BluetoothAdapter.STATE_DISCONNECTED); 4926 break; 4927 /* Synchronous call returns */ 4928 case CMD_PING_SUPPLICANT: 4929 case CMD_ENABLE_NETWORK: 4930 case CMD_ADD_OR_UPDATE_NETWORK: 4931 case CMD_REMOVE_NETWORK: 4932 case CMD_SAVE_CONFIG: 4933 replyToMessage(message, message.what, FAILURE); 4934 break; 4935 case CMD_GET_CAPABILITY_FREQ: 4936 replyToMessage(message, message.what, null); 4937 break; 4938 case CMD_GET_CONFIGURED_NETWORKS: 4939 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4940 break; 4941 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4942 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4943 break; 4944 case CMD_ENABLE_RSSI_POLL: 4945 mEnableRssiPolling = (message.arg1 == 1); 4946 break; 4947 case CMD_SET_HIGH_PERF_MODE: 4948 if (message.arg1 == 1) { 4949 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4950 } else { 4951 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4952 } 4953 break; 4954 case CMD_BOOT_COMPLETED: 4955 maybeRegisterNetworkFactory(); 4956 break; 4957 case CMD_SCREEN_STATE_CHANGED: 4958 handleScreenStateChanged(message.arg1 != 0, 4959 /* startBackgroundScanIfNeeded = */ false); 4960 break; 4961 /* Discard */ 4962 case CMD_START_SCAN: 4963 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4964 break; 4965 case CMD_START_SUPPLICANT: 4966 case CMD_STOP_SUPPLICANT: 4967 case CMD_STOP_SUPPLICANT_FAILED: 4968 case CMD_START_DRIVER: 4969 case CMD_STOP_DRIVER: 4970 case CMD_DELAYED_STOP_DRIVER: 4971 case CMD_DRIVER_START_TIMED_OUT: 4972 case CMD_START_AP: 4973 case CMD_START_AP_SUCCESS: 4974 case CMD_START_AP_FAILURE: 4975 case CMD_STOP_AP: 4976 case CMD_TETHER_STATE_CHANGE: 4977 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4978 case CMD_DISCONNECT: 4979 case CMD_RECONNECT: 4980 case CMD_REASSOCIATE: 4981 case CMD_RELOAD_TLS_AND_RECONNECT: 4982 case WifiMonitor.SUP_CONNECTION_EVENT: 4983 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4984 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4985 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4986 case WifiMonitor.SCAN_RESULTS_EVENT: 4987 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4988 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4989 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4990 case WifiMonitor.WPS_OVERLAP_EVENT: 4991 case CMD_BLACKLIST_NETWORK: 4992 case CMD_CLEAR_BLACKLIST: 4993 case CMD_SET_OPERATIONAL_MODE: 4994 case CMD_SET_COUNTRY_CODE: 4995 case CMD_SET_FREQUENCY_BAND: 4996 case CMD_RSSI_POLL: 4997 case CMD_ENABLE_ALL_NETWORKS: 4998 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4999 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5000 /* Handled by WifiApConfigStore */ 5001 case CMD_SET_AP_CONFIG: 5002 case CMD_SET_AP_CONFIG_COMPLETED: 5003 case CMD_REQUEST_AP_CONFIG: 5004 case CMD_RESPONSE_AP_CONFIG: 5005 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5006 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5007 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5008 case CMD_DISABLE_P2P_RSP: 5009 case WifiMonitor.SUP_REQUEST_IDENTITY: 5010 case CMD_TEST_NETWORK_DISCONNECT: 5011 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5012 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5013 case CMD_TARGET_BSSID: 5014 case CMD_AUTO_CONNECT: 5015 case CMD_AUTO_ROAM: 5016 case CMD_AUTO_SAVE_NETWORK: 5017 case CMD_ASSOCIATED_BSSID: 5018 case CMD_UNWANTED_NETWORK: 5019 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5020 case CMD_ROAM_WATCHDOG_TIMER: 5021 case CMD_DISABLE_EPHEMERAL_NETWORK: 5022 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5023 break; 5024 case DhcpStateMachine.CMD_ON_QUIT: 5025 mDhcpStateMachine = null; 5026 break; 5027 case CMD_SET_SUSPEND_OPT_ENABLED: 5028 if (message.arg1 == 1) { 5029 mSuspendWakeLock.release(); 5030 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5031 } else { 5032 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5033 } 5034 break; 5035 case WifiMonitor.DRIVER_HUNG_EVENT: 5036 setSupplicantRunning(false); 5037 setSupplicantRunning(true); 5038 break; 5039 case WifiManager.CONNECT_NETWORK: 5040 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5041 WifiManager.BUSY); 5042 break; 5043 case WifiManager.FORGET_NETWORK: 5044 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5045 WifiManager.BUSY); 5046 break; 5047 case WifiManager.SAVE_NETWORK: 5048 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5049 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5050 WifiManager.BUSY); 5051 break; 5052 case WifiManager.START_WPS: 5053 replyToMessage(message, WifiManager.WPS_FAILED, 5054 WifiManager.BUSY); 5055 break; 5056 case WifiManager.CANCEL_WPS: 5057 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5058 WifiManager.BUSY); 5059 break; 5060 case WifiManager.DISABLE_NETWORK: 5061 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5062 WifiManager.BUSY); 5063 break; 5064 case WifiManager.RSSI_PKTCNT_FETCH: 5065 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5066 WifiManager.BUSY); 5067 break; 5068 case CMD_GET_SUPPORTED_FEATURES: 5069 if (WifiNative.startHal()) { 5070 int featureSet = WifiNative.getSupportedFeatureSet(); 5071 replyToMessage(message, message.what, featureSet); 5072 } else { 5073 replyToMessage(message, message.what, 0); 5074 } 5075 break; 5076 case CMD_GET_LINK_LAYER_STATS: 5077 // Not supported hence reply with error message 5078 replyToMessage(message, message.what, null); 5079 break; 5080 case CMD_GET_MATCHING_CONFIG: 5081 replyToMessage(message, message.what); 5082 break; 5083 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5084 NetworkInfo info = (NetworkInfo) message.obj; 5085 mP2pConnected.set(info.isConnected()); 5086 break; 5087 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5088 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5089 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5090 break; 5091 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5092 case CMD_UPDATE_LINKPROPERTIES: 5093 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5094 break; 5095 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5096 case CMD_IP_CONFIGURATION_LOST: 5097 case CMD_IP_REACHABILITY_LOST: 5098 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5099 break; 5100 case CMD_GET_CONNECTION_STATISTICS: 5101 replyToMessage(message, message.what, mWifiConnectionStatistics); 5102 break; 5103 case CMD_REMOVE_APP_CONFIGURATIONS: 5104 deferMessage(message); 5105 break; 5106 case CMD_REMOVE_USER_CONFIGURATIONS: 5107 deferMessage(message); 5108 break; 5109 default: 5110 loge("Error! unhandled message" + message); 5111 break; 5112 } 5113 return HANDLED; 5114 } 5115 } 5116 5117 class InitialState extends State { 5118 @Override 5119 public void enter() { 5120 mWifiNative.unloadDriver(); 5121 if (mWifiP2pChannel == null) { 5122 mWifiP2pChannel = new AsyncChannel(); 5123 mWifiP2pChannel.connect(mContext, getHandler(), 5124 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5125 } 5126 5127 if (mWifiApConfigChannel == null) { 5128 mWifiApConfigChannel = new AsyncChannel(); 5129 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5130 mContext, getHandler()); 5131 wifiApConfigStore.loadApConfiguration(); 5132 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5133 wifiApConfigStore.getMessenger()); 5134 } 5135 } 5136 @Override 5137 public boolean processMessage(Message message) { 5138 logStateAndMessage(message, getClass().getSimpleName()); 5139 switch (message.what) { 5140 case CMD_START_SUPPLICANT: 5141 if (mWifiNative.loadDriver()) { 5142 try { 5143 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5144 } catch (Exception e) { 5145 loge("Failed to reload STA firmware " + e); 5146 // Continue 5147 } 5148 5149 try { 5150 // A runtime crash can leave the interface up and 5151 // IP addresses configured, and this affects 5152 // connectivity when supplicant starts up. 5153 // Ensure interface is down and we have no IP 5154 // addresses before a supplicant start. 5155 mNwService.setInterfaceDown(mInterfaceName); 5156 mNwService.clearInterfaceAddresses(mInterfaceName); 5157 5158 // Set privacy extensions 5159 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5160 5161 // IPv6 is enabled only as long as access point is connected since: 5162 // - IPv6 addresses and routes stick around after disconnection 5163 // - kernel is unaware when connected and fails to start IPv6 negotiation 5164 // - kernel can start autoconfiguration when 802.1x is not complete 5165 mNwService.disableIpv6(mInterfaceName); 5166 } catch (RemoteException re) { 5167 loge("Unable to change interface settings: " + re); 5168 } catch (IllegalStateException ie) { 5169 loge("Unable to change interface settings: " + ie); 5170 } 5171 5172 /* Stop a running supplicant after a runtime restart 5173 * Avoids issues with drivers that do not handle interface down 5174 * on a running supplicant properly. 5175 */ 5176 mWifiMonitor.killSupplicant(mP2pSupported); 5177 if(mWifiNative.startSupplicant(mP2pSupported)) { 5178 setWifiState(WIFI_STATE_ENABLING); 5179 if (DBG) log("Supplicant start successful"); 5180 mWifiMonitor.startMonitoring(); 5181 transitionTo(mSupplicantStartingState); 5182 } else { 5183 loge("Failed to start supplicant!"); 5184 } 5185 } else { 5186 loge("Failed to load driver"); 5187 } 5188 break; 5189 case CMD_START_AP: 5190 if (mWifiNative.loadDriver()) { 5191 setWifiApState(WIFI_AP_STATE_ENABLING); 5192 transitionTo(mSoftApStartingState); 5193 } else { 5194 loge("Failed to load driver for softap"); 5195 } 5196 break; 5197 default: 5198 return NOT_HANDLED; 5199 } 5200 return HANDLED; 5201 } 5202 } 5203 5204 class SupplicantStartingState extends State { 5205 private void initializeWpsDetails() { 5206 String detail; 5207 detail = SystemProperties.get("ro.product.name", ""); 5208 if (!mWifiNative.setDeviceName(detail)) { 5209 loge("Failed to set device name " + detail); 5210 } 5211 detail = SystemProperties.get("ro.product.manufacturer", ""); 5212 if (!mWifiNative.setManufacturer(detail)) { 5213 loge("Failed to set manufacturer " + detail); 5214 } 5215 detail = SystemProperties.get("ro.product.model", ""); 5216 if (!mWifiNative.setModelName(detail)) { 5217 loge("Failed to set model name " + detail); 5218 } 5219 detail = SystemProperties.get("ro.product.model", ""); 5220 if (!mWifiNative.setModelNumber(detail)) { 5221 loge("Failed to set model number " + detail); 5222 } 5223 detail = SystemProperties.get("ro.serialno", ""); 5224 if (!mWifiNative.setSerialNumber(detail)) { 5225 loge("Failed to set serial number " + detail); 5226 } 5227 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5228 loge("Failed to set WPS config methods"); 5229 } 5230 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5231 loge("Failed to set primary device type " + mPrimaryDeviceType); 5232 } 5233 } 5234 5235 @Override 5236 public boolean processMessage(Message message) { 5237 logStateAndMessage(message, getClass().getSimpleName()); 5238 5239 switch(message.what) { 5240 case WifiMonitor.SUP_CONNECTION_EVENT: 5241 if (DBG) log("Supplicant connection established"); 5242 setWifiState(WIFI_STATE_ENABLED); 5243 mSupplicantRestartCount = 0; 5244 /* Reset the supplicant state to indicate the supplicant 5245 * state is not known at this time */ 5246 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5247 /* Initialize data structures */ 5248 mLastBssid = null; 5249 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5250 mLastSignalLevel = -1; 5251 5252 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5253 mWifiNative.enableSaveConfig(); 5254 mWifiConfigStore.loadAndEnableAllNetworks(); 5255 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5256 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5257 } 5258 if (mWifiConfigStore.associatedPartialScanPeriodMilli.get() < 0) { 5259 mWifiConfigStore.associatedPartialScanPeriodMilli.set(0); 5260 } 5261 initializeWpsDetails(); 5262 5263 sendSupplicantConnectionChangedBroadcast(true); 5264 transitionTo(mDriverStartedState); 5265 break; 5266 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5267 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5268 loge("Failed to setup control channel, restart supplicant"); 5269 mWifiMonitor.killSupplicant(mP2pSupported); 5270 transitionTo(mInitialState); 5271 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5272 } else { 5273 loge("Failed " + mSupplicantRestartCount + 5274 " times to start supplicant, unload driver"); 5275 mSupplicantRestartCount = 0; 5276 setWifiState(WIFI_STATE_UNKNOWN); 5277 transitionTo(mInitialState); 5278 } 5279 break; 5280 case CMD_START_SUPPLICANT: 5281 case CMD_STOP_SUPPLICANT: 5282 case CMD_START_AP: 5283 case CMD_STOP_AP: 5284 case CMD_START_DRIVER: 5285 case CMD_STOP_DRIVER: 5286 case CMD_SET_OPERATIONAL_MODE: 5287 case CMD_SET_COUNTRY_CODE: 5288 case CMD_SET_FREQUENCY_BAND: 5289 case CMD_START_PACKET_FILTERING: 5290 case CMD_STOP_PACKET_FILTERING: 5291 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5292 deferMessage(message); 5293 break; 5294 default: 5295 return NOT_HANDLED; 5296 } 5297 return HANDLED; 5298 } 5299 } 5300 5301 class SupplicantStartedState extends State { 5302 @Override 5303 public void enter() { 5304 /* Wifi is available as long as we have a connection to supplicant */ 5305 mNetworkInfo.setIsAvailable(true); 5306 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5307 5308 int defaultInterval = mContext.getResources().getInteger( 5309 R.integer.config_wifi_supplicant_scan_interval); 5310 5311 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5312 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5313 defaultInterval); 5314 5315 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5316 mWifiNative.setExternalSim(true); 5317 5318 /* turn on use of DFS channels */ 5319 WifiNative.setDfsFlag(true); 5320 5321 /* set country code */ 5322 setCountryCode(); 5323 5324 setRandomMacOui(); 5325 mWifiNative.enableAutoConnect(false); 5326 } 5327 5328 @Override 5329 public boolean processMessage(Message message) { 5330 logStateAndMessage(message, getClass().getSimpleName()); 5331 5332 switch(message.what) { 5333 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5334 if (mP2pSupported) { 5335 transitionTo(mWaitForP2pDisableState); 5336 } else { 5337 transitionTo(mSupplicantStoppingState); 5338 } 5339 break; 5340 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5341 loge("Connection lost, restart supplicant"); 5342 handleSupplicantConnectionLoss(); 5343 handleNetworkDisconnect(); 5344 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5345 if (mP2pSupported) { 5346 transitionTo(mWaitForP2pDisableState); 5347 } else { 5348 transitionTo(mInitialState); 5349 } 5350 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5351 break; 5352 case WifiMonitor.SCAN_RESULTS_EVENT: 5353 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5354 closeRadioScanStats(); 5355 noteScanEnd(); 5356 setScanResults(); 5357 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5358 /* Just updated results from full scan, let apps know about this */ 5359 sendScanResultsAvailableBroadcast(); 5360 } 5361 mSendScanResultsBroadcast = false; 5362 mIsScanOngoing = false; 5363 mIsFullScanOngoing = false; 5364 if (mBufferedScanMsg.size() > 0) 5365 sendMessage(mBufferedScanMsg.remove()); 5366 break; 5367 case CMD_PING_SUPPLICANT: 5368 boolean ok = mWifiNative.ping(); 5369 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5370 break; 5371 case CMD_GET_CAPABILITY_FREQ: 5372 String freqs = mWifiNative.getFreqCapability(); 5373 replyToMessage(message, message.what, freqs); 5374 break; 5375 case CMD_START_AP: 5376 /* Cannot start soft AP while in client mode */ 5377 loge("Failed to start soft AP with a running supplicant"); 5378 setWifiApState(WIFI_AP_STATE_FAILED); 5379 break; 5380 case CMD_SET_OPERATIONAL_MODE: 5381 mOperationalMode = message.arg1; 5382 mWifiConfigStore. 5383 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5384 break; 5385 case CMD_TARGET_BSSID: 5386 // Trying to associate to this BSSID 5387 if (message.obj != null) { 5388 mTargetRoamBSSID = (String) message.obj; 5389 } 5390 break; 5391 case CMD_GET_LINK_LAYER_STATS: 5392 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5393 if (stats == null) { 5394 // When firmware doesnt support link layer stats, return an empty object 5395 stats = new WifiLinkLayerStats(); 5396 } 5397 replyToMessage(message, message.what, stats); 5398 break; 5399 case CMD_SET_COUNTRY_CODE: 5400 String country = (String) message.obj; 5401 5402 final boolean persist = (message.arg2 == 1); 5403 final int sequence = message.arg1; 5404 5405 if (sequence != mCountryCodeSequence.get()) { 5406 if (DBG) log("set country code ignored due to sequnce num"); 5407 break; 5408 } 5409 if (DBG) log("set country code " + country); 5410 country = country.toUpperCase(Locale.ROOT); 5411 5412 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5413 if (mWifiNative.setCountryCode(country)) { 5414 mDriverSetCountryCode = country; 5415 } else { 5416 loge("Failed to set country code " + country); 5417 } 5418 } 5419 5420 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5421 break; 5422 default: 5423 return NOT_HANDLED; 5424 } 5425 return HANDLED; 5426 } 5427 5428 @Override 5429 public void exit() { 5430 mNetworkInfo.setIsAvailable(false); 5431 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5432 } 5433 } 5434 5435 class SupplicantStoppingState extends State { 5436 @Override 5437 public void enter() { 5438 /* Send any reset commands to supplicant before shutting it down */ 5439 handleNetworkDisconnect(); 5440 if (mDhcpStateMachine != null) { 5441 mDhcpStateMachine.doQuit(); 5442 } 5443 5444 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5445 if (suppState == null) suppState = "unknown"; 5446 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5447 if (p2pSuppState == null) p2pSuppState = "unknown"; 5448 5449 loge("SupplicantStoppingState: stopSupplicant " 5450 + " init.svc.wpa_supplicant=" + suppState 5451 + " init.svc.p2p_supplicant=" + p2pSuppState); 5452 mWifiMonitor.stopSupplicant(); 5453 5454 /* Send ourselves a delayed message to indicate failure after a wait time */ 5455 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5456 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5457 setWifiState(WIFI_STATE_DISABLING); 5458 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5459 } 5460 @Override 5461 public boolean processMessage(Message message) { 5462 logStateAndMessage(message, getClass().getSimpleName()); 5463 5464 switch(message.what) { 5465 case WifiMonitor.SUP_CONNECTION_EVENT: 5466 loge("Supplicant connection received while stopping"); 5467 break; 5468 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5469 if (DBG) log("Supplicant connection lost"); 5470 handleSupplicantConnectionLoss(); 5471 transitionTo(mInitialState); 5472 break; 5473 case CMD_STOP_SUPPLICANT_FAILED: 5474 if (message.arg1 == mSupplicantStopFailureToken) { 5475 loge("Timed out on a supplicant stop, kill and proceed"); 5476 handleSupplicantConnectionLoss(); 5477 transitionTo(mInitialState); 5478 } 5479 break; 5480 case CMD_START_SUPPLICANT: 5481 case CMD_STOP_SUPPLICANT: 5482 case CMD_START_AP: 5483 case CMD_STOP_AP: 5484 case CMD_START_DRIVER: 5485 case CMD_STOP_DRIVER: 5486 case CMD_SET_OPERATIONAL_MODE: 5487 case CMD_SET_COUNTRY_CODE: 5488 case CMD_SET_FREQUENCY_BAND: 5489 case CMD_START_PACKET_FILTERING: 5490 case CMD_STOP_PACKET_FILTERING: 5491 deferMessage(message); 5492 break; 5493 default: 5494 return NOT_HANDLED; 5495 } 5496 return HANDLED; 5497 } 5498 } 5499 5500 class DriverStartingState extends State { 5501 private int mTries; 5502 @Override 5503 public void enter() { 5504 mTries = 1; 5505 /* Send ourselves a delayed message to start driver a second time */ 5506 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5507 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5508 } 5509 @Override 5510 public boolean processMessage(Message message) { 5511 logStateAndMessage(message, getClass().getSimpleName()); 5512 5513 switch(message.what) { 5514 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5515 SupplicantState state = handleSupplicantStateChange(message); 5516 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5517 * a state that indicates driver has started, it is ready to 5518 * receive driver commands 5519 */ 5520 if (SupplicantState.isDriverActive(state)) { 5521 transitionTo(mDriverStartedState); 5522 } 5523 break; 5524 case CMD_DRIVER_START_TIMED_OUT: 5525 if (message.arg1 == mDriverStartToken) { 5526 if (mTries >= 2) { 5527 loge("Failed to start driver after " + mTries); 5528 transitionTo(mDriverStoppedState); 5529 } else { 5530 loge("Driver start failed, retrying"); 5531 mWakeLock.acquire(); 5532 mWifiNative.startDriver(); 5533 mWakeLock.release(); 5534 5535 ++mTries; 5536 /* Send ourselves a delayed message to start driver again */ 5537 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5538 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5539 } 5540 } 5541 break; 5542 /* Queue driver commands & connection events */ 5543 case CMD_START_DRIVER: 5544 case CMD_STOP_DRIVER: 5545 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5546 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5547 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5548 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5549 case WifiMonitor.WPS_OVERLAP_EVENT: 5550 case CMD_SET_COUNTRY_CODE: 5551 case CMD_SET_FREQUENCY_BAND: 5552 case CMD_START_PACKET_FILTERING: 5553 case CMD_STOP_PACKET_FILTERING: 5554 case CMD_START_SCAN: 5555 case CMD_DISCONNECT: 5556 case CMD_REASSOCIATE: 5557 case CMD_RECONNECT: 5558 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5559 deferMessage(message); 5560 break; 5561 case WifiMonitor.SCAN_RESULTS_EVENT: 5562 // Loose scan results obtained in Driver Starting state, they can only confuse 5563 // the state machine 5564 break; 5565 default: 5566 return NOT_HANDLED; 5567 } 5568 return HANDLED; 5569 } 5570 } 5571 5572 class DriverStartedState extends State { 5573 @Override 5574 public void enter() { 5575 5576 if (PDBG) { 5577 loge("DriverStartedState enter"); 5578 } 5579 if (VDBG) { 5580 mWifiLogger.startLoggingAllBuffer(3, 0, 60, 0); 5581 mWifiLogger.getAllRingBufferData(); 5582 } 5583 mIsRunning = true; 5584 mInDelayedStop = false; 5585 mDelayedStopCounter++; 5586 updateBatteryWorkSource(null); 5587 /** 5588 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5589 * When this mode is on, some of the low-level scan parameters used by the 5590 * driver are changed to reduce interference with bluetooth 5591 */ 5592 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5593 /* set frequency band of operation */ 5594 setFrequencyBand(); 5595 /* initialize network state */ 5596 setNetworkDetailedState(DetailedState.DISCONNECTED); 5597 5598 /* Remove any filtering on Multicast v6 at start */ 5599 mWifiNative.stopFilteringMulticastV6Packets(); 5600 5601 /* Reset Multicast v4 filtering state */ 5602 if (mFilteringMulticastV4Packets.get()) { 5603 mWifiNative.startFilteringMulticastV4Packets(); 5604 } else { 5605 mWifiNative.stopFilteringMulticastV4Packets(); 5606 } 5607 5608 mDhcpActive = false; 5609 5610 if (mOperationalMode != CONNECT_MODE) { 5611 mWifiNative.disconnect(); 5612 mWifiConfigStore.disableAllNetworks(); 5613 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5614 setWifiState(WIFI_STATE_DISABLED); 5615 } 5616 transitionTo(mScanModeState); 5617 } else { 5618 5619 // Status pulls in the current supplicant state and network connection state 5620 // events over the monitor connection. This helps framework sync up with 5621 // current supplicant state 5622 // TODO: actually check th supplicant status string and make sure the supplicant 5623 // is in disconnecte4d state. 5624 mWifiNative.status(); 5625 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5626 transitionTo(mDisconnectedState); 5627 } 5628 5629 // We may have missed screen update at boot 5630 if (mScreenBroadcastReceived.get() == false) { 5631 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5632 Context.POWER_SERVICE); 5633 handleScreenStateChanged(powerManager.isScreenOn(), 5634 /* startBackgroundScanIfNeeded = */ false); 5635 } else { 5636 // Set the right suspend mode settings 5637 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5638 && mUserWantsSuspendOpt.get()); 5639 } 5640 mWifiNative.setPowerSave(true); 5641 5642 if (mP2pSupported) { 5643 if (mOperationalMode == CONNECT_MODE) { 5644 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5645 } else { 5646 // P2P statemachine starts in disabled state, and is not enabled until 5647 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5648 // keep it disabled. 5649 } 5650 } 5651 5652 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5653 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5654 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5655 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5656 5657 if (WifiNative.startHal()) { 5658 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 5659 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 5660 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 5661 mAlwaysOnPnoSupported = true; 5662 } 5663 } 5664 5665 if (PDBG) { 5666 loge("Driverstarted State enter done, epno=" + mAlwaysOnPnoSupported 5667 + " feature=" + mHalFeatureSet); 5668 } 5669 } 5670 5671 @Override 5672 public boolean processMessage(Message message) { 5673 logStateAndMessage(message, getClass().getSimpleName()); 5674 5675 switch(message.what) { 5676 case CMD_START_SCAN: 5677 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5678 break; 5679 case CMD_SET_FREQUENCY_BAND: 5680 int band = message.arg1; 5681 if (DBG) log("set frequency band " + band); 5682 if (mWifiNative.setBand(band)) { 5683 5684 if (PDBG) loge("did set frequency band " + band); 5685 5686 mFrequencyBand.set(band); 5687 // Flush old data - like scan results 5688 mWifiNative.bssFlush(); 5689 // Fetch the latest scan results when frequency band is set 5690 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5691 5692 if (PDBG) loge("done set frequency band " + band); 5693 5694 } else { 5695 loge("Failed to set frequency band " + band); 5696 } 5697 break; 5698 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5699 mBluetoothConnectionActive = (message.arg1 != 5700 BluetoothAdapter.STATE_DISCONNECTED); 5701 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5702 break; 5703 case CMD_STOP_DRIVER: 5704 int mode = message.arg1; 5705 5706 /* Already doing a delayed stop */ 5707 if (mInDelayedStop) { 5708 if (DBG) log("Already in delayed stop"); 5709 break; 5710 } 5711 /* disconnect right now, but leave the driver running for a bit */ 5712 mWifiConfigStore.disableAllNetworks(); 5713 5714 mInDelayedStop = true; 5715 mDelayedStopCounter++; 5716 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5717 5718 /* send regular delayed shut down */ 5719 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5720 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5721 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5722 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5723 DRIVER_STOP_REQUEST, driverStopIntent, 5724 PendingIntent.FLAG_UPDATE_CURRENT); 5725 5726 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5727 + mDriverStopDelayMs, mDriverStopIntent); 5728 break; 5729 case CMD_START_DRIVER: 5730 if (mInDelayedStop) { 5731 mInDelayedStop = false; 5732 mDelayedStopCounter++; 5733 mAlarmManager.cancel(mDriverStopIntent); 5734 if (DBG) log("Delayed stop ignored due to start"); 5735 if (mOperationalMode == CONNECT_MODE) { 5736 mWifiConfigStore.enableAllNetworks(); 5737 } 5738 } 5739 break; 5740 case CMD_DELAYED_STOP_DRIVER: 5741 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5742 if (message.arg1 != mDelayedStopCounter) break; 5743 if (getCurrentState() != mDisconnectedState) { 5744 mWifiNative.disconnect(); 5745 handleNetworkDisconnect(); 5746 } 5747 mWakeLock.acquire(); 5748 mWifiNative.stopDriver(); 5749 mWakeLock.release(); 5750 if (mP2pSupported) { 5751 transitionTo(mWaitForP2pDisableState); 5752 } else { 5753 transitionTo(mDriverStoppingState); 5754 } 5755 break; 5756 case CMD_START_PACKET_FILTERING: 5757 if (message.arg1 == MULTICAST_V6) { 5758 mWifiNative.startFilteringMulticastV6Packets(); 5759 } else if (message.arg1 == MULTICAST_V4) { 5760 mWifiNative.startFilteringMulticastV4Packets(); 5761 } else { 5762 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5763 } 5764 break; 5765 case CMD_STOP_PACKET_FILTERING: 5766 if (message.arg1 == MULTICAST_V6) { 5767 mWifiNative.stopFilteringMulticastV6Packets(); 5768 } else if (message.arg1 == MULTICAST_V4) { 5769 mWifiNative.stopFilteringMulticastV4Packets(); 5770 } else { 5771 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5772 } 5773 break; 5774 case CMD_SET_SUSPEND_OPT_ENABLED: 5775 if (message.arg1 == 1) { 5776 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5777 mSuspendWakeLock.release(); 5778 } else { 5779 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5780 } 5781 break; 5782 case CMD_SET_HIGH_PERF_MODE: 5783 if (message.arg1 == 1) { 5784 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5785 } else { 5786 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5787 } 5788 break; 5789 case CMD_ENABLE_TDLS: 5790 if (message.obj != null) { 5791 String remoteAddress = (String) message.obj; 5792 boolean enable = (message.arg1 == 1); 5793 mWifiNative.startTdls(remoteAddress, enable); 5794 } 5795 break; 5796 case WifiMonitor.ANQP_DONE_EVENT: 5797 Log.d(Utils.hs2LogTag(getClass()), String.format("WFSM: ANQP for %016x %s", 5798 (Long)message.obj, message.arg1 != 0 ? "success" : "fail")); 5799 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 5800 break; 5801 default: 5802 return NOT_HANDLED; 5803 } 5804 return HANDLED; 5805 } 5806 @Override 5807 public void exit() { 5808 mIsRunning = false; 5809 updateBatteryWorkSource(null); 5810 mScanResults = new ArrayList<>(); 5811 5812 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5813 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5814 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5815 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5816 noteScanEnd(); // wrap up any pending request. 5817 mBufferedScanMsg.clear(); 5818 } 5819 } 5820 5821 class WaitForP2pDisableState extends State { 5822 private State mTransitionToState; 5823 @Override 5824 public void enter() { 5825 switch (getCurrentMessage().what) { 5826 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5827 mTransitionToState = mInitialState; 5828 break; 5829 case CMD_DELAYED_STOP_DRIVER: 5830 mTransitionToState = mDriverStoppingState; 5831 break; 5832 case CMD_STOP_SUPPLICANT: 5833 mTransitionToState = mSupplicantStoppingState; 5834 break; 5835 default: 5836 mTransitionToState = mDriverStoppingState; 5837 break; 5838 } 5839 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5840 } 5841 @Override 5842 public boolean processMessage(Message message) { 5843 logStateAndMessage(message, getClass().getSimpleName()); 5844 5845 switch(message.what) { 5846 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5847 transitionTo(mTransitionToState); 5848 break; 5849 /* Defer wifi start/shut and driver commands */ 5850 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5851 case CMD_START_SUPPLICANT: 5852 case CMD_STOP_SUPPLICANT: 5853 case CMD_START_AP: 5854 case CMD_STOP_AP: 5855 case CMD_START_DRIVER: 5856 case CMD_STOP_DRIVER: 5857 case CMD_SET_OPERATIONAL_MODE: 5858 case CMD_SET_COUNTRY_CODE: 5859 case CMD_SET_FREQUENCY_BAND: 5860 case CMD_START_PACKET_FILTERING: 5861 case CMD_STOP_PACKET_FILTERING: 5862 case CMD_START_SCAN: 5863 case CMD_DISCONNECT: 5864 case CMD_REASSOCIATE: 5865 case CMD_RECONNECT: 5866 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5867 deferMessage(message); 5868 break; 5869 default: 5870 return NOT_HANDLED; 5871 } 5872 return HANDLED; 5873 } 5874 } 5875 5876 class DriverStoppingState extends State { 5877 @Override 5878 public boolean processMessage(Message message) { 5879 logStateAndMessage(message, getClass().getSimpleName()); 5880 5881 switch(message.what) { 5882 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5883 SupplicantState state = handleSupplicantStateChange(message); 5884 if (state == SupplicantState.INTERFACE_DISABLED) { 5885 transitionTo(mDriverStoppedState); 5886 } 5887 break; 5888 /* Queue driver commands */ 5889 case CMD_START_DRIVER: 5890 case CMD_STOP_DRIVER: 5891 case CMD_SET_COUNTRY_CODE: 5892 case CMD_SET_FREQUENCY_BAND: 5893 case CMD_START_PACKET_FILTERING: 5894 case CMD_STOP_PACKET_FILTERING: 5895 case CMD_START_SCAN: 5896 case CMD_DISCONNECT: 5897 case CMD_REASSOCIATE: 5898 case CMD_RECONNECT: 5899 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5900 deferMessage(message); 5901 break; 5902 default: 5903 return NOT_HANDLED; 5904 } 5905 return HANDLED; 5906 } 5907 } 5908 5909 class DriverStoppedState extends State { 5910 @Override 5911 public boolean processMessage(Message message) { 5912 logStateAndMessage(message, getClass().getSimpleName()); 5913 switch (message.what) { 5914 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5915 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5916 SupplicantState state = stateChangeResult.state; 5917 // A WEXT bug means that we can be back to driver started state 5918 // unexpectedly 5919 if (SupplicantState.isDriverActive(state)) { 5920 transitionTo(mDriverStartedState); 5921 } 5922 break; 5923 case CMD_START_DRIVER: 5924 mWakeLock.acquire(); 5925 mWifiNative.startDriver(); 5926 mWakeLock.release(); 5927 transitionTo(mDriverStartingState); 5928 break; 5929 default: 5930 return NOT_HANDLED; 5931 } 5932 return HANDLED; 5933 } 5934 } 5935 5936 class ScanModeState extends State { 5937 private int mLastOperationMode; 5938 @Override 5939 public void enter() { 5940 mLastOperationMode = mOperationalMode; 5941 } 5942 @Override 5943 public boolean processMessage(Message message) { 5944 logStateAndMessage(message, getClass().getSimpleName()); 5945 5946 switch(message.what) { 5947 case CMD_SET_OPERATIONAL_MODE: 5948 if (message.arg1 == CONNECT_MODE) { 5949 5950 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5951 setWifiState(WIFI_STATE_ENABLED); 5952 // Load and re-enable networks when going back to enabled state 5953 // This is essential for networks to show up after restore 5954 mWifiConfigStore.loadAndEnableAllNetworks(); 5955 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5956 } else { 5957 mWifiConfigStore.enableAllNetworks(); 5958 } 5959 5960 // Try autojoining with recent network already present in the cache 5961 // If none are found then trigger a scan which will trigger autojoin 5962 // upon reception of scan results event 5963 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5964 startScan(ENABLE_WIFI, 0, null, null); 5965 } 5966 5967 // Loose last selection choice since user toggled WiFi 5968 mWifiConfigStore. 5969 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5970 5971 mOperationalMode = CONNECT_MODE; 5972 transitionTo(mDisconnectedState); 5973 } else { 5974 // Nothing to do 5975 return HANDLED; 5976 } 5977 break; 5978 // Handle scan. All the connection related commands are 5979 // handled only in ConnectModeState 5980 case CMD_START_SCAN: 5981 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5982 break; 5983 default: 5984 return NOT_HANDLED; 5985 } 5986 return HANDLED; 5987 } 5988 } 5989 5990 5991 String smToString(Message message) { 5992 return smToString(message.what); 5993 } 5994 5995 String smToString(int what) { 5996 String s = "unknown"; 5997 switch (what) { 5998 case WifiMonitor.DRIVER_HUNG_EVENT: 5999 s = "DRIVER_HUNG_EVENT"; 6000 break; 6001 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6002 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6003 break; 6004 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6005 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6006 break; 6007 case CMD_SET_FREQUENCY_BAND: 6008 s = "CMD_SET_FREQUENCY_BAND"; 6009 break; 6010 case CMD_DELAYED_NETWORK_DISCONNECT: 6011 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6012 break; 6013 case CMD_TEST_NETWORK_DISCONNECT: 6014 s = "CMD_TEST_NETWORK_DISCONNECT"; 6015 break; 6016 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6017 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6018 break; 6019 case CMD_DISABLE_EPHEMERAL_NETWORK: 6020 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6021 break; 6022 case CMD_START_DRIVER: 6023 s = "CMD_START_DRIVER"; 6024 break; 6025 case CMD_STOP_DRIVER: 6026 s = "CMD_STOP_DRIVER"; 6027 break; 6028 case CMD_STOP_SUPPLICANT: 6029 s = "CMD_STOP_SUPPLICANT"; 6030 break; 6031 case CMD_STOP_SUPPLICANT_FAILED: 6032 s = "CMD_STOP_SUPPLICANT_FAILED"; 6033 break; 6034 case CMD_START_SUPPLICANT: 6035 s = "CMD_START_SUPPLICANT"; 6036 break; 6037 case CMD_REQUEST_AP_CONFIG: 6038 s = "CMD_REQUEST_AP_CONFIG"; 6039 break; 6040 case CMD_RESPONSE_AP_CONFIG: 6041 s = "CMD_RESPONSE_AP_CONFIG"; 6042 break; 6043 case CMD_TETHER_STATE_CHANGE: 6044 s = "CMD_TETHER_STATE_CHANGE"; 6045 break; 6046 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6047 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6048 break; 6049 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6050 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6051 break; 6052 case CMD_ADD_OR_UPDATE_NETWORK: 6053 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6054 break; 6055 case CMD_REMOVE_NETWORK: 6056 s = "CMD_REMOVE_NETWORK"; 6057 break; 6058 case CMD_ENABLE_NETWORK: 6059 s = "CMD_ENABLE_NETWORK"; 6060 break; 6061 case CMD_ENABLE_ALL_NETWORKS: 6062 s = "CMD_ENABLE_ALL_NETWORKS"; 6063 break; 6064 case CMD_AUTO_CONNECT: 6065 s = "CMD_AUTO_CONNECT"; 6066 break; 6067 case CMD_AUTO_ROAM: 6068 s = "CMD_AUTO_ROAM"; 6069 break; 6070 case CMD_AUTO_SAVE_NETWORK: 6071 s = "CMD_AUTO_SAVE_NETWORK"; 6072 break; 6073 case CMD_BOOT_COMPLETED: 6074 s = "CMD_BOOT_COMPLETED"; 6075 break; 6076 case DhcpStateMachine.CMD_START_DHCP: 6077 s = "CMD_START_DHCP"; 6078 break; 6079 case DhcpStateMachine.CMD_STOP_DHCP: 6080 s = "CMD_STOP_DHCP"; 6081 break; 6082 case DhcpStateMachine.CMD_RENEW_DHCP: 6083 s = "CMD_RENEW_DHCP"; 6084 break; 6085 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6086 s = "CMD_PRE_DHCP_ACTION"; 6087 break; 6088 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6089 s = "CMD_POST_DHCP_ACTION"; 6090 break; 6091 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6092 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6093 break; 6094 case DhcpStateMachine.CMD_ON_QUIT: 6095 s = "CMD_ON_QUIT"; 6096 break; 6097 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6098 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6099 break; 6100 case WifiManager.DISABLE_NETWORK: 6101 s = "WifiManager.DISABLE_NETWORK"; 6102 break; 6103 case CMD_BLACKLIST_NETWORK: 6104 s = "CMD_BLACKLIST_NETWORK"; 6105 break; 6106 case CMD_CLEAR_BLACKLIST: 6107 s = "CMD_CLEAR_BLACKLIST"; 6108 break; 6109 case CMD_SAVE_CONFIG: 6110 s = "CMD_SAVE_CONFIG"; 6111 break; 6112 case CMD_GET_CONFIGURED_NETWORKS: 6113 s = "CMD_GET_CONFIGURED_NETWORKS"; 6114 break; 6115 case CMD_GET_SUPPORTED_FEATURES: 6116 s = "CMD_GET_SUPPORTED_FEATURES"; 6117 break; 6118 case CMD_UNWANTED_NETWORK: 6119 s = "CMD_UNWANTED_NETWORK"; 6120 break; 6121 case CMD_NETWORK_STATUS: 6122 s = "CMD_NETWORK_STATUS"; 6123 break; 6124 case CMD_GET_LINK_LAYER_STATS: 6125 s = "CMD_GET_LINK_LAYER_STATS"; 6126 break; 6127 case CMD_GET_MATCHING_CONFIG: 6128 s = "CMD_GET_MATCHING_CONFIG"; 6129 break; 6130 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6131 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6132 break; 6133 case CMD_DISCONNECT: 6134 s = "CMD_DISCONNECT"; 6135 break; 6136 case CMD_RECONNECT: 6137 s = "CMD_RECONNECT"; 6138 break; 6139 case CMD_REASSOCIATE: 6140 s = "CMD_REASSOCIATE"; 6141 break; 6142 case CMD_GET_CONNECTION_STATISTICS: 6143 s = "CMD_GET_CONNECTION_STATISTICS"; 6144 break; 6145 case CMD_SET_HIGH_PERF_MODE: 6146 s = "CMD_SET_HIGH_PERF_MODE"; 6147 break; 6148 case CMD_SET_COUNTRY_CODE: 6149 s = "CMD_SET_COUNTRY_CODE"; 6150 break; 6151 case CMD_ENABLE_RSSI_POLL: 6152 s = "CMD_ENABLE_RSSI_POLL"; 6153 break; 6154 case CMD_RSSI_POLL: 6155 s = "CMD_RSSI_POLL"; 6156 break; 6157 case CMD_START_PACKET_FILTERING: 6158 s = "CMD_START_PACKET_FILTERING"; 6159 break; 6160 case CMD_STOP_PACKET_FILTERING: 6161 s = "CMD_STOP_PACKET_FILTERING"; 6162 break; 6163 case CMD_SET_SUSPEND_OPT_ENABLED: 6164 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6165 break; 6166 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6167 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6168 break; 6169 case CMD_UPDATE_LINKPROPERTIES: 6170 s = "CMD_UPDATE_LINKPROPERTIES"; 6171 break; 6172 case CMD_RELOAD_TLS_AND_RECONNECT: 6173 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6174 break; 6175 case WifiManager.CONNECT_NETWORK: 6176 s = "CONNECT_NETWORK"; 6177 break; 6178 case WifiManager.SAVE_NETWORK: 6179 s = "SAVE_NETWORK"; 6180 break; 6181 case WifiManager.FORGET_NETWORK: 6182 s = "FORGET_NETWORK"; 6183 break; 6184 case WifiMonitor.SUP_CONNECTION_EVENT: 6185 s = "SUP_CONNECTION_EVENT"; 6186 break; 6187 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6188 s = "SUP_DISCONNECTION_EVENT"; 6189 break; 6190 case WifiMonitor.SCAN_RESULTS_EVENT: 6191 s = "SCAN_RESULTS_EVENT"; 6192 break; 6193 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6194 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6195 break; 6196 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6197 s = "AUTHENTICATION_FAILURE_EVENT"; 6198 break; 6199 case WifiMonitor.SSID_TEMP_DISABLED: 6200 s = "SSID_TEMP_DISABLED"; 6201 break; 6202 case WifiMonitor.SSID_REENABLED: 6203 s = "SSID_REENABLED"; 6204 break; 6205 case WifiMonitor.WPS_SUCCESS_EVENT: 6206 s = "WPS_SUCCESS_EVENT"; 6207 break; 6208 case WifiMonitor.WPS_FAIL_EVENT: 6209 s = "WPS_FAIL_EVENT"; 6210 break; 6211 case WifiMonitor.SUP_REQUEST_IDENTITY: 6212 s = "SUP_REQUEST_IDENTITY"; 6213 break; 6214 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6215 s = "NETWORK_CONNECTION_EVENT"; 6216 break; 6217 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6218 s = "NETWORK_DISCONNECTION_EVENT"; 6219 break; 6220 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6221 s = "ASSOCIATION_REJECTION_EVENT"; 6222 break; 6223 case CMD_SET_OPERATIONAL_MODE: 6224 s = "CMD_SET_OPERATIONAL_MODE"; 6225 break; 6226 case CMD_START_SCAN: 6227 s = "CMD_START_SCAN"; 6228 break; 6229 case CMD_DISABLE_P2P_RSP: 6230 s = "CMD_DISABLE_P2P_RSP"; 6231 break; 6232 case CMD_DISABLE_P2P_REQ: 6233 s = "CMD_DISABLE_P2P_REQ"; 6234 break; 6235 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6236 s = "GOOD_LINK_DETECTED"; 6237 break; 6238 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6239 s = "POOR_LINK_DETECTED"; 6240 break; 6241 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6242 s = "GROUP_CREATING_TIMED_OUT"; 6243 break; 6244 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6245 s = "P2P_CONNECTION_CHANGED"; 6246 break; 6247 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6248 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6249 break; 6250 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6251 s = "P2P.SET_MIRACAST_MODE"; 6252 break; 6253 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6254 s = "P2P.BLOCK_DISCOVERY"; 6255 break; 6256 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6257 s = "P2P.SET_COUNTRY_CODE"; 6258 break; 6259 case WifiManager.CANCEL_WPS: 6260 s = "CANCEL_WPS"; 6261 break; 6262 case WifiManager.CANCEL_WPS_FAILED: 6263 s = "CANCEL_WPS_FAILED"; 6264 break; 6265 case WifiManager.CANCEL_WPS_SUCCEDED: 6266 s = "CANCEL_WPS_SUCCEDED"; 6267 break; 6268 case WifiManager.START_WPS: 6269 s = "START_WPS"; 6270 break; 6271 case WifiManager.START_WPS_SUCCEEDED: 6272 s = "START_WPS_SUCCEEDED"; 6273 break; 6274 case WifiManager.WPS_FAILED: 6275 s = "WPS_FAILED"; 6276 break; 6277 case WifiManager.WPS_COMPLETED: 6278 s = "WPS_COMPLETED"; 6279 break; 6280 case WifiManager.RSSI_PKTCNT_FETCH: 6281 s = "RSSI_PKTCNT_FETCH"; 6282 break; 6283 case CMD_IP_CONFIGURATION_LOST: 6284 s = "CMD_IP_CONFIGURATION_LOST"; 6285 break; 6286 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6287 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6288 break; 6289 case CMD_IP_REACHABILITY_LOST: 6290 s = "CMD_IP_REACHABILITY_LOST"; 6291 break; 6292 case CMD_STATIC_IP_SUCCESS: 6293 s = "CMD_STATIC_IP_SUCCESSFUL"; 6294 break; 6295 case CMD_STATIC_IP_FAILURE: 6296 s = "CMD_STATIC_IP_FAILURE"; 6297 break; 6298 case DhcpStateMachine.DHCP_SUCCESS: 6299 s = "DHCP_SUCCESS"; 6300 break; 6301 case DhcpStateMachine.DHCP_FAILURE: 6302 s = "DHCP_FAILURE"; 6303 break; 6304 case CMD_TARGET_BSSID: 6305 s = "CMD_TARGET_BSSID"; 6306 break; 6307 case CMD_ASSOCIATED_BSSID: 6308 s = "CMD_ASSOCIATED_BSSID"; 6309 break; 6310 case CMD_REMOVE_APP_CONFIGURATIONS: 6311 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6312 break; 6313 case CMD_REMOVE_USER_CONFIGURATIONS: 6314 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6315 break; 6316 case CMD_ROAM_WATCHDOG_TIMER: 6317 s = "CMD_ROAM_WATCHDOG_TIMER"; 6318 break; 6319 case CMD_SCREEN_STATE_CHANGED: 6320 s = "CMD_SCREEN_STATE_CHANGED"; 6321 break; 6322 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6323 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6324 break; 6325 case CMD_START_PNO: 6326 s = "CMD_START_PNO"; 6327 break; 6328 case CMD_STARTED_PNO_DBG: 6329 s = "CMD_STARTED_PNO_DBG"; 6330 break; 6331 case CMD_PNO_NETWORK_FOUND: 6332 s = "CMD_PNO_NETWORK_FOUND"; 6333 break; 6334 default: 6335 s = "what:" + Integer.toString(what); 6336 break; 6337 } 6338 return s; 6339 } 6340 6341 void registerConnected() { 6342 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6343 long now_ms = System.currentTimeMillis(); 6344 // We are switching away from this configuration, 6345 // hence record the time we were connected last 6346 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6347 if (config != null) { 6348 config.lastConnected = System.currentTimeMillis(); 6349 config.autoJoinBailedDueToLowRssi = false; 6350 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6351 config.numConnectionFailures = 0; 6352 config.numIpConfigFailures = 0; 6353 config.numAuthFailures = 0; 6354 config.numAssociation++; 6355 } 6356 mBadLinkspeedcount = 0; 6357 } 6358 } 6359 6360 void registerDisconnected() { 6361 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6362 long now_ms = System.currentTimeMillis(); 6363 // We are switching away from this configuration, 6364 // hence record the time we were connected last 6365 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6366 if (config != null) { 6367 config.lastDisconnected = System.currentTimeMillis(); 6368 if (config.ephemeral) { 6369 // Remove ephemeral WifiConfigurations from file 6370 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6371 } 6372 } 6373 } 6374 } 6375 6376 void noteWifiDisabledWhileAssociated() { 6377 // We got disabled by user while we were associated, make note of it 6378 int rssi = mWifiInfo.getRssi(); 6379 WifiConfiguration config = getCurrentWifiConfiguration(); 6380 if (getCurrentState() == mConnectedState 6381 && rssi != WifiInfo.INVALID_RSSI 6382 && config != null) { 6383 boolean is24GHz = mWifiInfo.is24GHz(); 6384 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6385 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6386 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6387 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6388 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6389 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6390 if (isBadRSSI) { 6391 // Take note that we got disabled while RSSI was Bad 6392 config.numUserTriggeredWifiDisableLowRSSI++; 6393 } else if (isLowRSSI) { 6394 // Take note that we got disabled while RSSI was Low 6395 config.numUserTriggeredWifiDisableBadRSSI++; 6396 } else if (!isHighRSSI) { 6397 // Take note that we got disabled while RSSI was Not high 6398 config.numUserTriggeredWifiDisableNotHighRSSI++; 6399 } 6400 } 6401 } 6402 6403 WifiConfiguration getCurrentWifiConfiguration() { 6404 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6405 return null; 6406 } 6407 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6408 } 6409 6410 ScanResult getCurrentScanResult() { 6411 WifiConfiguration config = getCurrentWifiConfiguration(); 6412 if (config == null) { 6413 return null; 6414 } 6415 String BSSID = mWifiInfo.getBSSID(); 6416 if (BSSID == null) { 6417 BSSID = mTargetRoamBSSID; 6418 } 6419 ScanDetailCache scanDetailCache = 6420 mWifiConfigStore.getScanDetailCache(config); 6421 6422 if (scanDetailCache == null) { 6423 return null; 6424 } 6425 6426 return scanDetailCache.get(BSSID); 6427 } 6428 6429 String getCurrentBSSID() { 6430 if (linkDebouncing) { 6431 return null; 6432 } 6433 return mLastBssid; 6434 } 6435 6436 class ConnectModeState extends State { 6437 @Override 6438 public boolean processMessage(Message message) { 6439 WifiConfiguration config; 6440 int netId; 6441 boolean ok; 6442 boolean didDisconnect; 6443 String bssid; 6444 String ssid; 6445 NetworkUpdateResult result; 6446 logStateAndMessage(message, getClass().getSimpleName()); 6447 6448 connectScanningService(); 6449 6450 switch (message.what) { 6451 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6452 didBlackListBSSID = false; 6453 bssid = (String) message.obj; 6454 if (bssid == null || TextUtils.isEmpty(bssid)) { 6455 // If BSSID is null, use the target roam BSSID 6456 bssid = mTargetRoamBSSID; 6457 } 6458 if (bssid != null) { 6459 // If we have a BSSID, tell configStore to black list it 6460 synchronized(mScanResultCache) { 6461 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6462 (mLastNetworkId, bssid, false); 6463 } 6464 } 6465 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6466 break; 6467 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6468 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6469 break; 6470 case WifiMonitor.SSID_TEMP_DISABLED: 6471 case WifiMonitor.SSID_REENABLED: 6472 String substr = (String) message.obj; 6473 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6474 "temp-disabled" : "re-enabled"; 6475 loge("ConnectModeState SSID state=" + en + " nid=" 6476 + Integer.toString(message.arg1) + " [" + substr + "]"); 6477 synchronized(mScanResultCache) { 6478 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6479 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6480 } 6481 break; 6482 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6483 SupplicantState state = handleSupplicantStateChange(message); 6484 // A driver/firmware hang can now put the interface in a down state. 6485 // We detect the interface going down and recover from it 6486 if (!SupplicantState.isDriverActive(state)) { 6487 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6488 handleNetworkDisconnect(); 6489 } 6490 log("Detected an interface down, restart driver"); 6491 transitionTo(mDriverStoppedState); 6492 sendMessage(CMD_START_DRIVER); 6493 break; 6494 } 6495 6496 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6497 // when authentication times out after a successful connection, 6498 // we can figure this from the supplicant state. If supplicant 6499 // state is DISCONNECTED, but the mNetworkInfo says we are not 6500 // disconnected, we need to handle a disconnection 6501 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6502 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6503 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6504 handleNetworkDisconnect(); 6505 transitionTo(mDisconnectedState); 6506 } 6507 break; 6508 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6509 if (message.arg1 == 1) { 6510 mWifiNative.disconnect(); 6511 mTemporarilyDisconnectWifi = true; 6512 } else { 6513 mWifiNative.reconnect(); 6514 mTemporarilyDisconnectWifi = false; 6515 } 6516 break; 6517 case CMD_ADD_OR_UPDATE_NETWORK: 6518 config = (WifiConfiguration) message.obj; 6519 6520 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6521 loge("Not authorized to update network " 6522 + " config=" + config.SSID 6523 + " cnid=" + config.networkId 6524 + " uid=" + message.sendingUid); 6525 replyToMessage(message, message.what, FAILURE); 6526 break; 6527 } 6528 6529 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6530 if (res < 0) { 6531 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6532 } else { 6533 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6534 if (curConfig != null && config != null) { 6535 if (curConfig.priority < config.priority 6536 && config.status == WifiConfiguration.Status.ENABLED) { 6537 // Interpret this as a connect attempt 6538 // Set the last selected configuration so as to allow the system to 6539 // stick the last user choice without persisting the choice 6540 mWifiConfigStore.setLastSelectedConfiguration(res); 6541 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 6542 mWifiConfigStore.writeKnownNetworkHistory(false); 6543 6544 // Remember time of last connection attempt 6545 lastConnectAttempt = System.currentTimeMillis(); 6546 6547 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6548 6549 // As a courtesy to the caller, trigger a scan now 6550 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6551 } 6552 } 6553 } 6554 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6555 break; 6556 case CMD_REMOVE_NETWORK: 6557 netId = message.arg1; 6558 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 6559 loge("Not authorized to remove network " 6560 + " cnid=" + netId 6561 + " uid=" + message.sendingUid); 6562 replyToMessage(message, message.what, FAILURE); 6563 break; 6564 } 6565 6566 ok = mWifiConfigStore.removeNetwork(message.arg1); 6567 if (!ok) { 6568 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6569 } 6570 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6571 break; 6572 case CMD_ENABLE_NETWORK: 6573 boolean others = message.arg2 == 1; 6574 // Tell autojoin the user did try to select to that network 6575 // However, do NOT persist the choice by bumping the priority of the network 6576 if (others) { 6577 mWifiAutoJoinController. 6578 updateConfigurationHistory(message.arg1, true, false); 6579 // Set the last selected configuration so as to allow the system to 6580 // stick the last user choice without persisting the choice 6581 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6582 6583 // Remember time of last connection attempt 6584 lastConnectAttempt = System.currentTimeMillis(); 6585 6586 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6587 } 6588 // Cancel auto roam requests 6589 autoRoamSetBSSID(message.arg1, "any"); 6590 6591 int uid = message.sendingUid; 6592 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1, uid); 6593 if (!ok) { 6594 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6595 } 6596 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6597 break; 6598 case CMD_ENABLE_ALL_NETWORKS: 6599 long time = android.os.SystemClock.elapsedRealtime(); 6600 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6601 mWifiConfigStore.enableAllNetworks(); 6602 mLastEnableAllNetworksTime = time; 6603 } 6604 break; 6605 case WifiManager.DISABLE_NETWORK: 6606 if (mWifiConfigStore.disableNetwork(message.arg1, 6607 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6608 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6609 } else { 6610 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6611 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6612 WifiManager.ERROR); 6613 } 6614 break; 6615 case CMD_DISABLE_EPHEMERAL_NETWORK: 6616 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6617 if (config != null) { 6618 if (config.networkId == mLastNetworkId) { 6619 // Disconnect and let autojoin reselect a new network 6620 sendMessage(CMD_DISCONNECT); 6621 } 6622 } 6623 break; 6624 case CMD_BLACKLIST_NETWORK: 6625 mWifiNative.addToBlacklist((String) message.obj); 6626 break; 6627 case CMD_CLEAR_BLACKLIST: 6628 mWifiNative.clearBlacklist(); 6629 break; 6630 case CMD_SAVE_CONFIG: 6631 ok = mWifiConfigStore.saveConfig(); 6632 6633 if (DBG) loge("wifistatemachine did save config " + ok); 6634 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6635 6636 // Inform the backup manager about a data change 6637 IBackupManager ibm = IBackupManager.Stub.asInterface( 6638 ServiceManager.getService(Context.BACKUP_SERVICE)); 6639 if (ibm != null) { 6640 try { 6641 ibm.dataChanged("com.android.providers.settings"); 6642 } catch (Exception e) { 6643 // Try again later 6644 } 6645 } 6646 break; 6647 case CMD_GET_CONFIGURED_NETWORKS: 6648 replyToMessage(message, message.what, 6649 mWifiConfigStore.getConfiguredNetworks()); 6650 break; 6651 case WifiMonitor.SUP_REQUEST_IDENTITY: 6652 int networkId = message.arg2; 6653 boolean identitySent = false; 6654 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 6655 6656 if (targetWificonfiguration != null 6657 && targetWificonfiguration.enterpriseConfig != null) { 6658 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 6659 } 6660 6661 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 6662 if (targetWificonfiguration != null 6663 && targetWificonfiguration.networkId == networkId 6664 && targetWificonfiguration.allowedKeyManagement 6665 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 6666 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 6667 || eapMethod == WifiEnterpriseConfig.Eap.AKA 6668 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 6669 TelephonyManager tm = (TelephonyManager) 6670 mContext.getSystemService(Context.TELEPHONY_SERVICE); 6671 if (tm != null) { 6672 String imsi = tm.getSubscriberId(); 6673 String mccMnc = ""; 6674 6675 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 6676 mccMnc = tm.getSimOperator(); 6677 6678 String identity = buildIdentity(eapMethod, imsi, mccMnc); 6679 6680 if (!identity.isEmpty()) { 6681 mWifiNative.simIdentityResponse(networkId, identity); 6682 identitySent = true; 6683 } 6684 } 6685 } 6686 if (!identitySent) { 6687 // Supplicant lacks credentials to connect to that network, hence black list 6688 ssid = (String) message.obj; 6689 if (targetWificonfiguration != null && ssid != null 6690 && targetWificonfiguration.SSID != null 6691 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6692 mWifiConfigStore.handleSSIDStateChange( 6693 targetWificonfiguration.networkId, false, 6694 "AUTH_FAILED no identity", null); 6695 } 6696 // Disconnect now, as we don't have any way to fullfill 6697 // the supplicant request. 6698 mWifiConfigStore.setLastSelectedConfiguration( 6699 WifiConfiguration.INVALID_NETWORK_ID); 6700 mWifiNative.disconnect(); 6701 } 6702 break; 6703 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6704 logd("Received SUP_REQUEST_SIM_AUTH"); 6705 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6706 if (requestData != null) { 6707 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6708 handleGsmAuthRequest(requestData); 6709 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 6710 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 6711 handle3GAuthRequest(requestData); 6712 } 6713 } else { 6714 loge("Invalid sim auth request"); 6715 } 6716 break; 6717 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6718 replyToMessage(message, message.what, 6719 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6720 break; 6721 case CMD_GET_MATCHING_CONFIG: 6722 replyToMessage(message, message.what, 6723 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 6724 break; 6725 /* Do a redundant disconnect without transition */ 6726 case CMD_DISCONNECT: 6727 mWifiConfigStore.setLastSelectedConfiguration 6728 (WifiConfiguration.INVALID_NETWORK_ID); 6729 mWifiNative.disconnect(); 6730 break; 6731 case CMD_RECONNECT: 6732 mWifiAutoJoinController.attemptAutoJoin(); 6733 break; 6734 case CMD_REASSOCIATE: 6735 lastConnectAttempt = System.currentTimeMillis(); 6736 mWifiNative.reassociate(); 6737 break; 6738 case CMD_RELOAD_TLS_AND_RECONNECT: 6739 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6740 logd("Reconnecting to give a chance to un-connected TLS networks"); 6741 mWifiNative.disconnect(); 6742 lastConnectAttempt = System.currentTimeMillis(); 6743 mWifiNative.reconnect(); 6744 } 6745 break; 6746 case CMD_AUTO_ROAM: 6747 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6748 return HANDLED; 6749 case CMD_AUTO_CONNECT: 6750 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6751 * associated status to the STATUS command but somehow-someplace still thinks 6752 * it is associated and thus will ignore select/reconnect command with 6753 * following message: 6754 * "Already associated with the selected network - do nothing" 6755 * 6756 * Hence, sends a disconnect to supplicant first. 6757 */ 6758 didDisconnect = false; 6759 if (getCurrentState() != mDisconnectedState) { 6760 /** Supplicant will ignore the reconnect if we are currently associated, 6761 * hence trigger a disconnect 6762 */ 6763 didDisconnect = true; 6764 mWifiNative.disconnect(); 6765 } 6766 6767 /* connect command coming from auto-join */ 6768 config = (WifiConfiguration) message.obj; 6769 netId = message.arg1; 6770 int roam = message.arg2; 6771 loge("CMD_AUTO_CONNECT sup state " 6772 + mSupplicantStateTracker.getSupplicantStateName() 6773 + " my state " + getCurrentState().getName() 6774 + " nid=" + Integer.toString(netId) 6775 + " roam=" + Integer.toString(roam)); 6776 if (config == null) { 6777 loge("AUTO_CONNECT and no config, bail out..."); 6778 break; 6779 } 6780 6781 /* Make sure we cancel any previous roam request */ 6782 autoRoamSetBSSID(netId, config.BSSID); 6783 6784 /* Save the network config */ 6785 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6786 + " nid=" + Integer.toString(netId)); 6787 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 6788 netId = result.getNetworkId(); 6789 loge("CMD_AUTO_CONNECT did save config -> " 6790 + " nid=" + Integer.toString(netId)); 6791 6792 if (deferForUserInput(message, netId, false)) { 6793 break; 6794 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 6795 WifiConfiguration.USER_BANNED) { 6796 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6797 WifiManager.NOT_AUTHORIZED); 6798 break; 6799 } 6800 6801 // Make sure the network is enabled, since supplicant will not reenable it 6802 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6803 6804 // If we're autojoining a network that the user or an app explicitly selected, 6805 // keep track of the UID that selected it. 6806 int lastConnectUid = mWifiConfigStore.isLastSelectedConfiguration(config) ? 6807 config.lastConnectUid : WifiConfiguration.UNKNOWN_UID; 6808 6809 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 6810 lastConnectUid) && mWifiNative.reconnect()) { 6811 lastConnectAttempt = System.currentTimeMillis(); 6812 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6813 config = mWifiConfigStore.getWifiConfiguration(netId); 6814 if (config != null 6815 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6816 // If we autojoined a different config than the user selected one, 6817 // it means we could not see the last user selection, 6818 // or that the last user selection was faulty and ended up blacklisted 6819 // for some reason (in which case the user is notified with an error 6820 // message in the Wifi picker), and thus we managed to auto-join away 6821 // from the selected config. -> in that case we need to forget 6822 // the selection because we don't want to abruptly switch back to it. 6823 // 6824 // Note that the user selection is also forgotten after a period of time 6825 // during which the device has been disconnected. 6826 // The default value is 30 minutes : see the code path at bottom of 6827 // setScanResults() function. 6828 mWifiConfigStore. 6829 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6830 } 6831 mAutoRoaming = roam; 6832 if (isRoaming() || linkDebouncing) { 6833 transitionTo(mRoamingState); 6834 } else if (didDisconnect) { 6835 transitionTo(mDisconnectingState); 6836 } else { 6837 /* Already in disconnected state, nothing to change */ 6838 } 6839 } else { 6840 loge("Failed to connect config: " + config + " netId: " + netId); 6841 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6842 WifiManager.ERROR); 6843 break; 6844 } 6845 break; 6846 case CMD_REMOVE_APP_CONFIGURATIONS: 6847 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 6848 break; 6849 case CMD_REMOVE_USER_CONFIGURATIONS: 6850 mWifiConfigStore.removeNetworksForUser(message.arg1); 6851 break; 6852 case WifiManager.CONNECT_NETWORK: 6853 /** 6854 * The connect message can contain a network id passed as arg1 on message or 6855 * or a config passed as obj on message. 6856 * For a new network, a config is passed to create and connect. 6857 * For an existing network, a network id is passed 6858 */ 6859 netId = message.arg1; 6860 config = (WifiConfiguration) message.obj; 6861 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6862 boolean updatedExisting = false; 6863 6864 /* Save the network config */ 6865 if (config != null) { 6866 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6867 loge("Not authorized to update network " 6868 + " config=" + config.SSID 6869 + " cnid=" + config.networkId 6870 + " uid=" + message.sendingUid); 6871 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6872 WifiManager.NOT_AUTHORIZED); 6873 break; 6874 } 6875 6876 String configKey = config.configKey(true /* allowCached */); 6877 WifiConfiguration savedConfig = 6878 mWifiConfigStore.getWifiConfiguration(configKey); 6879 if (savedConfig != null) { 6880 // There is an existing config with this netId, but it wasn't exposed 6881 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6882 // getConfiguredNetworks). Remove those bits and update the config. 6883 config = savedConfig; 6884 loge("CONNECT_NETWORK updating existing config with id=" + 6885 config.networkId + " configKey=" + configKey); 6886 config.ephemeral = false; 6887 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6888 updatedExisting = true; 6889 } 6890 6891 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6892 netId = result.getNetworkId(); 6893 } 6894 config = mWifiConfigStore.getWifiConfiguration(netId); 6895 6896 if (config == null) { 6897 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 6898 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6899 + getCurrentState().getName()); 6900 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6901 WifiManager.ERROR); 6902 break; 6903 } else { 6904 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6905 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6906 + " config=" + config.SSID 6907 + " cnid=" + config.networkId 6908 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6909 + " my state " + getCurrentState().getName() 6910 + " uid = " + message.sendingUid 6911 + wasSkipped); 6912 } 6913 6914 autoRoamSetBSSID(netId, "any"); 6915 6916 if (message.sendingUid == Process.WIFI_UID 6917 || message.sendingUid == Process.SYSTEM_UID) { 6918 // As a sanity measure, clear the BSSID in the supplicant network block. 6919 // If system or Wifi Settings want to connect, they will not 6920 // specify the BSSID. 6921 // If an app however had added a BSSID to this configuration, and the BSSID 6922 // was wrong, Then we would forever fail to connect until that BSSID 6923 // is cleaned up. 6924 clearConfigBSSID(config, "CONNECT_NETWORK"); 6925 } 6926 6927 if (deferForUserInput(message, netId, true)) { 6928 break; 6929 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 6930 WifiConfiguration.USER_BANNED) { 6931 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6932 WifiManager.NOT_AUTHORIZED); 6933 break; 6934 } 6935 6936 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6937 6938 /* Tell autojoin the user did try to connect to that network if from settings */ 6939 boolean persist = 6940 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 6941 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 6942 6943 mWifiConfigStore.setLastSelectedConfiguration(netId); 6944 6945 didDisconnect = false; 6946 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6947 && mLastNetworkId != netId) { 6948 /** Supplicant will ignore the reconnect if we are currently associated, 6949 * hence trigger a disconnect 6950 */ 6951 didDisconnect = true; 6952 mWifiNative.disconnect(); 6953 } 6954 6955 // Make sure the network is enabled, since supplicant will not reenable it 6956 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6957 6958 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true, 6959 message.sendingUid) && mWifiNative.reconnect()) { 6960 lastConnectAttempt = System.currentTimeMillis(); 6961 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6962 6963 /* The state tracker handles enabling networks upon completion/failure */ 6964 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6965 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6966 if (didDisconnect) { 6967 /* Expect a disconnection from the old connection */ 6968 transitionTo(mDisconnectingState); 6969 } else if (updatedExisting && getCurrentState() == mConnectedState && 6970 getCurrentWifiConfiguration().networkId == netId) { 6971 // Update the current set of network capabilities, but stay in the 6972 // current state. 6973 updateCapabilities(config); 6974 } else { 6975 /** 6976 * Directly go to disconnected state where we 6977 * process the connection events from supplicant 6978 **/ 6979 transitionTo(mDisconnectedState); 6980 } 6981 } else { 6982 loge("Failed to connect config: " + config + " netId: " + netId); 6983 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6984 WifiManager.ERROR); 6985 break; 6986 } 6987 break; 6988 case WifiManager.SAVE_NETWORK: 6989 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6990 // Fall thru 6991 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6992 lastSavedConfigurationAttempt = null; // Used for debug 6993 config = (WifiConfiguration) message.obj; 6994 if (config == null) { 6995 loge("ERROR: SAVE_NETWORK with null configuration" 6996 + mSupplicantStateTracker.getSupplicantStateName() 6997 + " my state " + getCurrentState().getName()); 6998 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6999 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7000 WifiManager.ERROR); 7001 break; 7002 } 7003 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7004 int nid = config.networkId; 7005 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7006 + " config=" + config.SSID 7007 + " nid=" + config.networkId 7008 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7009 + " my state " + getCurrentState().getName()); 7010 7011 // Only record the uid if this is user initiated 7012 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7013 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid)) { 7014 loge("Not authorized to update network " 7015 + " config=" + config.SSID 7016 + " cnid=" + config.networkId 7017 + " uid=" + message.sendingUid); 7018 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7019 WifiManager.NOT_AUTHORIZED); 7020 break; 7021 } 7022 7023 result = mWifiConfigStore.saveNetwork(config, WifiConfiguration.UNKNOWN_UID); 7024 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7025 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7026 if (result.hasIpChanged()) { 7027 // The currently connection configuration was changed 7028 // We switched from DHCP to static or from static to DHCP, or the 7029 // static IP address has changed. 7030 log("Reconfiguring IP on connection"); 7031 // TODO: clear addresses and disable IPv6 7032 // to simplify obtainingIpState. 7033 transitionTo(mObtainingIpState); 7034 } 7035 if (result.hasProxyChanged()) { 7036 log("Reconfiguring proxy on connection"); 7037 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7038 } 7039 } 7040 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7041 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7042 7043 if (VDBG) { 7044 loge("Success save network nid=" 7045 + Integer.toString(result.getNetworkId())); 7046 } 7047 7048 synchronized(mScanResultCache) { 7049 /** 7050 * If the command comes from WifiManager, then 7051 * tell autojoin the user did try to modify and save that network, 7052 * and interpret the SAVE_NETWORK as a request to connect 7053 */ 7054 boolean user = message.what == WifiManager.SAVE_NETWORK; 7055 7056 // Did this connect come from settings 7057 boolean persistConnect = 7058 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7059 7060 if (user) { 7061 mWifiConfigStore.updateLastConnectUid(config, message.sendingUid); 7062 mWifiConfigStore.writeKnownNetworkHistory(false); 7063 } 7064 7065 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7066 , user, persistConnect); 7067 mWifiAutoJoinController.attemptAutoJoin(); 7068 } 7069 } else { 7070 loge("Failed to save network"); 7071 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7072 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7073 WifiManager.ERROR); 7074 } 7075 break; 7076 case WifiManager.FORGET_NETWORK: 7077 // Debug only, remember last configuration that was forgotten 7078 WifiConfiguration toRemove 7079 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7080 if (toRemove == null) { 7081 lastForgetConfigurationAttempt = null; 7082 } else { 7083 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7084 } 7085 // check that the caller owns this network 7086 netId = message.arg1; 7087 7088 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 7089 loge("Not authorized to forget network " 7090 + " cnid=" + netId 7091 + " uid=" + message.sendingUid); 7092 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7093 WifiManager.NOT_AUTHORIZED); 7094 break; 7095 } 7096 7097 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7098 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7099 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7100 (WifiConfiguration) message.obj); 7101 } else { 7102 loge("Failed to forget network"); 7103 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7104 WifiManager.ERROR); 7105 } 7106 break; 7107 case WifiManager.START_WPS: 7108 WpsInfo wpsInfo = (WpsInfo) message.obj; 7109 WpsResult wpsResult; 7110 switch (wpsInfo.setup) { 7111 case WpsInfo.PBC: 7112 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7113 break; 7114 case WpsInfo.KEYPAD: 7115 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7116 break; 7117 case WpsInfo.DISPLAY: 7118 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7119 break; 7120 default: 7121 wpsResult = new WpsResult(Status.FAILURE); 7122 loge("Invalid setup for WPS"); 7123 break; 7124 } 7125 mWifiConfigStore.setLastSelectedConfiguration 7126 (WifiConfiguration.INVALID_NETWORK_ID); 7127 if (wpsResult.status == Status.SUCCESS) { 7128 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7129 transitionTo(mWpsRunningState); 7130 } else { 7131 loge("Failed to start WPS with config " + wpsInfo.toString()); 7132 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7133 } 7134 break; 7135 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7136 if (DBG) log("Network connection established"); 7137 mLastNetworkId = message.arg1; 7138 mLastBssid = (String) message.obj; 7139 7140 mWifiInfo.setBSSID(mLastBssid); 7141 mWifiInfo.setNetworkId(mLastNetworkId); 7142 7143 sendNetworkStateChangeBroadcast(mLastBssid); 7144 transitionTo(mObtainingIpState); 7145 break; 7146 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7147 // Calling handleNetworkDisconnect here is redundant because we might already 7148 // have called it when leaving L2ConnectedState to go to disconnecting state 7149 // or thru other path 7150 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7151 // if they are valid, and only in this case call handleNEtworkDisconnect, 7152 // TODO: this should be fixed for a L MR release 7153 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7154 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7155 // at the chip etc... 7156 if (DBG) log("ConnectModeState: Network connection lost "); 7157 handleNetworkDisconnect(); 7158 transitionTo(mDisconnectedState); 7159 break; 7160 case CMD_START_PNO: 7161 // Restart Pno if required, reevaluating the list of networks 7162 startPno(); 7163 break; 7164 case CMD_PNO_NETWORK_FOUND: 7165 processPnoNetworkFound((ScanResult[])message.obj); 7166 break; 7167 default: 7168 return NOT_HANDLED; 7169 } 7170 return HANDLED; 7171 } 7172 } 7173 7174 private void updateCapabilities(WifiConfiguration config) { 7175 if (config.ephemeral) { 7176 mNetworkCapabilities.removeCapability( 7177 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7178 } else { 7179 mNetworkCapabilities.addCapability( 7180 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7181 } 7182 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7183 } 7184 7185 private class WifiNetworkAgent extends NetworkAgent { 7186 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7187 NetworkCapabilities nc, LinkProperties lp, int score) { 7188 super(l, c, TAG, ni, nc, lp, score); 7189 } 7190 protected void unwanted() { 7191 // Ignore if we're not the current networkAgent. 7192 if (this != mNetworkAgent) return; 7193 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7194 + Integer.toString(mWifiInfo.score)); 7195 unwantedNetwork(network_status_unwanted_disconnect); 7196 } 7197 7198 @Override 7199 protected void networkStatus(int status) { 7200 if (this != mNetworkAgent) return; 7201 if (status == NetworkAgent.INVALID_NETWORK) { 7202 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7203 + Integer.toString(mWifiInfo.score)); 7204 unwantedNetwork(network_status_unwanted_disable_autojoin); 7205 } else if (status == NetworkAgent.VALID_NETWORK) { 7206 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7207 + Integer.toString(mWifiInfo.score)); 7208 doNetworkStatus(status); 7209 } 7210 } 7211 7212 @Override 7213 protected void saveAcceptUnvalidated(boolean accept) { 7214 if (this != mNetworkAgent) return; 7215 WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); 7216 } 7217 } 7218 7219 void unwantedNetwork(int reason) { 7220 sendMessage(CMD_UNWANTED_NETWORK, reason); 7221 } 7222 7223 void doNetworkStatus(int status) { 7224 sendMessage(CMD_NETWORK_STATUS, status); 7225 } 7226 7227 // rfc4186 & rfc4187: 7228 // create Permanent Identity base on IMSI, 7229 // identity = usernam@realm 7230 // with username = prefix | IMSI 7231 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7232 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7233 String mcc; 7234 String mnc; 7235 String prefix; 7236 7237 if (imsi == null || imsi.isEmpty()) 7238 return ""; 7239 7240 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7241 prefix = "1"; 7242 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7243 prefix = "0"; 7244 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7245 prefix = "6"; 7246 else // not a valide EapMethod 7247 return ""; 7248 7249 /* extract mcc & mnc from mccMnc */ 7250 if (mccMnc != null && !mccMnc.isEmpty()) { 7251 mcc = mccMnc.substring(0, 3); 7252 mnc = mccMnc.substring(3); 7253 if (mnc.length() == 2) 7254 mnc = "0" + mnc; 7255 } else { 7256 // extract mcc & mnc from IMSI, assume mnc size is 3 7257 mcc = imsi.substring(0, 3); 7258 mnc = imsi.substring(3, 6); 7259 } 7260 7261 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7262 } 7263 7264 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7265 if (config == null) 7266 return false; 7267 7268 // We are still seeing a fairly high power consumption triggered by autojoin scans 7269 // Hence do partial scans only for PSK configuration that are roamable since the 7270 // primary purpose of the partial scans is roaming. 7271 // Full badn scans with exponential backoff for the purpose or extended roaming and 7272 // network switching are performed unconditionally. 7273 ScanDetailCache scanDetailCache = 7274 mWifiConfigStore.getScanDetailCache(config); 7275 if (scanDetailCache == null 7276 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7277 || scanDetailCache.size() > 6) { 7278 //return true but to not trigger the scan 7279 return true; 7280 } 7281 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7282 ONE_HOUR_MILLI, restrictChannelList); 7283 if (channels != null && channels.size() != 0) { 7284 StringBuilder freqs = new StringBuilder(); 7285 boolean first = true; 7286 for (Integer channel : channels) { 7287 if (!first) 7288 freqs.append(","); 7289 freqs.append(channel.toString()); 7290 first = false; 7291 } 7292 //if (DBG) { 7293 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7294 //} 7295 // Call wifi native to start the scan 7296 if (startScanNative( 7297 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7298 freqs.toString())) { 7299 // Only count battery consumption if scan request is accepted 7300 noteScanStart(SCAN_ALARM_SOURCE, null); 7301 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7302 } else { 7303 // used for debug only, mark scan as failed 7304 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7305 } 7306 return true; 7307 } else { 7308 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7309 return false; 7310 } 7311 } 7312 7313 void clearCurrentConfigBSSID(String dbg) { 7314 // Clear the bssid in the current config's network block 7315 WifiConfiguration config = getCurrentWifiConfiguration(); 7316 if (config == null) 7317 return; 7318 clearConfigBSSID(config, dbg); 7319 } 7320 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7321 if (config == null) 7322 return; 7323 if (DBG) { 7324 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7325 + " config.bssid " + config.BSSID); 7326 } 7327 config.autoJoinBSSID = "any"; 7328 config.BSSID = "any"; 7329 if (DBG) { 7330 loge(dbg + " " + config.SSID 7331 + " nid=" + Integer.toString(config.networkId)); 7332 } 7333 mWifiConfigStore.saveWifiConfigBSSID(config); 7334 } 7335 7336 class L2ConnectedState extends State { 7337 @Override 7338 public void enter() { 7339 mRssiPollToken++; 7340 if (mEnableRssiPolling) { 7341 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7342 } 7343 if (mNetworkAgent != null) { 7344 loge("Have NetworkAgent when entering L2Connected"); 7345 setNetworkDetailedState(DetailedState.DISCONNECTED); 7346 } 7347 setNetworkDetailedState(DetailedState.CONNECTING); 7348 7349 if (!TextUtils.isEmpty(mTcpBufferSizes)) { 7350 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7351 } 7352 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7353 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7354 mLinkProperties, 60); 7355 7356 // We must clear the config BSSID, as the wifi chipset may decide to roam 7357 // from this point on and having the BSSID specified in the network block would 7358 // cause the roam to faile and the device to disconnect 7359 clearCurrentConfigBSSID("L2ConnectedState"); 7360 7361 try { 7362 mIpReachabilityMonitor = new IpReachabilityMonitor( 7363 mInterfaceName, 7364 new IpReachabilityMonitor.Callback() { 7365 @Override 7366 public void notifyLost(InetAddress ip, String logMsg) { 7367 sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); 7368 } 7369 }); 7370 } catch (IllegalArgumentException e) { 7371 Log.wtf("Failed to create IpReachabilityMonitor", e); 7372 } 7373 } 7374 7375 @Override 7376 public void exit() { 7377 if (mIpReachabilityMonitor != null) { 7378 mIpReachabilityMonitor.stop(); 7379 mIpReachabilityMonitor = null; 7380 } 7381 7382 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7383 // Bug: 15347363 7384 // For paranoia's sake, call handleNetworkDisconnect 7385 // only if BSSID is null or last networkId 7386 // is not invalid. 7387 if (DBG) { 7388 StringBuilder sb = new StringBuilder(); 7389 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7390 if (mLastBssid !=null) { 7391 sb.append(" ").append(mLastBssid); 7392 } 7393 } 7394 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7395 handleNetworkDisconnect(); 7396 } 7397 } 7398 7399 @Override 7400 public boolean processMessage(Message message) { 7401 logStateAndMessage(message, getClass().getSimpleName()); 7402 7403 switch (message.what) { 7404 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7405 handlePreDhcpSetup(); 7406 break; 7407 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7408 handlePostDhcpSetup(); 7409 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7410 if (DBG) log("WifiStateMachine DHCP successful"); 7411 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7412 // We advance to mVerifyingLinkState because handleIPv4Success will call 7413 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7414 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7415 if (DBG) { 7416 int count = -1; 7417 WifiConfiguration config = getCurrentWifiConfiguration(); 7418 if (config != null) { 7419 count = config.numConnectionFailures; 7420 } 7421 log("WifiStateMachine DHCP failure count=" + count); 7422 } 7423 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7424 // As above, we transition to mDisconnectingState via updateLinkProperties. 7425 } 7426 break; 7427 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7428 handleSuccessfulIpConfiguration(); 7429 sendConnectedState(); 7430 transitionTo(mConnectedState); 7431 break; 7432 case CMD_IP_CONFIGURATION_LOST: 7433 // Get Link layer stats so that we get fresh tx packet counters. 7434 getWifiLinkLayerStats(true); 7435 handleIpConfigurationLost(); 7436 transitionTo(mDisconnectingState); 7437 break; 7438 case CMD_IP_REACHABILITY_LOST: 7439 if (DBG && message.obj != null) log((String) message.obj); 7440 handleIpReachabilityLost(); 7441 transitionTo(mDisconnectingState); 7442 break; 7443 case CMD_DISCONNECT: 7444 mWifiNative.disconnect(); 7445 transitionTo(mDisconnectingState); 7446 break; 7447 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7448 if (message.arg1 == 1) { 7449 mWifiNative.disconnect(); 7450 mTemporarilyDisconnectWifi = true; 7451 transitionTo(mDisconnectingState); 7452 } 7453 break; 7454 case CMD_SET_OPERATIONAL_MODE: 7455 if (message.arg1 != CONNECT_MODE) { 7456 sendMessage(CMD_DISCONNECT); 7457 deferMessage(message); 7458 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7459 noteWifiDisabledWhileAssociated(); 7460 } 7461 } 7462 mWifiConfigStore. 7463 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7464 break; 7465 case CMD_SET_COUNTRY_CODE: 7466 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7467 deferMessage(message); 7468 break; 7469 case CMD_START_SCAN: 7470 //if (DBG) { 7471 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7472 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7473 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7474 + " targetRoamBSSID=" + mTargetRoamBSSID 7475 + " RSSI=" + mWifiInfo.getRssi()); 7476 //} 7477 if (message.arg1 == SCAN_ALARM_SOURCE) { 7478 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7479 // not be processed) and restart the scan if needed 7480 boolean shouldScan = 7481 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7482 if (!checkAndRestartDelayedScan(message.arg2, 7483 shouldScan, 7484 mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null)) { 7485 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7486 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7487 + message.arg1 7488 + " " + message.arg2 + ", " + mDelayedScanCounter 7489 + " -> obsolete"); 7490 return HANDLED; 7491 } 7492 if (mP2pConnected.get()) { 7493 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7494 + message.arg1 7495 + " " + message.arg2 + ", " + mDelayedScanCounter 7496 + " ignore because P2P is connected"); 7497 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7498 return HANDLED; 7499 } 7500 boolean tryFullBandScan = false; 7501 boolean restrictChannelList = false; 7502 long now_ms = System.currentTimeMillis(); 7503 if (DBG) { 7504 loge("WifiStateMachine CMD_START_SCAN with age=" 7505 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7506 + " interval=" + fullBandConnectedTimeIntervalMilli 7507 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7508 } 7509 if (mWifiInfo != null) { 7510 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7511 (now_ms - lastFullBandConnectedTimeMilli) 7512 > fullBandConnectedTimeIntervalMilli) { 7513 if (DBG) { 7514 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7515 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7516 + " interval=" + fullBandConnectedTimeIntervalMilli 7517 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7518 } 7519 tryFullBandScan = true; 7520 } 7521 7522 if (mWifiInfo.txSuccessRate > 7523 mWifiConfigStore.maxTxPacketForFullScans 7524 || mWifiInfo.rxSuccessRate > 7525 mWifiConfigStore.maxRxPacketForFullScans) { 7526 // Too much traffic at the interface, hence no full band scan 7527 if (DBG) { 7528 loge("WifiStateMachine CMD_START_SCAN " + 7529 "prevent full band scan due to pkt rate"); 7530 } 7531 tryFullBandScan = false; 7532 } 7533 7534 if (mWifiInfo.txSuccessRate > 7535 mWifiConfigStore.maxTxPacketForPartialScans 7536 || mWifiInfo.rxSuccessRate > 7537 mWifiConfigStore.maxRxPacketForPartialScans) { 7538 // Don't scan if lots of packets are being sent 7539 restrictChannelList = true; 7540 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7541 if (DBG) { 7542 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7543 + " ...and ignore scans" 7544 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7545 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7546 } 7547 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7548 return HANDLED; 7549 } 7550 } 7551 } 7552 7553 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7554 if (DBG) { 7555 loge("WifiStateMachine CMD_START_SCAN full=" + 7556 tryFullBandScan); 7557 } 7558 if (currentConfiguration != null) { 7559 if (fullBandConnectedTimeIntervalMilli 7560 < mWifiConfigStore.associatedPartialScanPeriodMilli.get()) { 7561 // Sanity 7562 fullBandConnectedTimeIntervalMilli 7563 = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 7564 } 7565 if (tryFullBandScan) { 7566 lastFullBandConnectedTimeMilli = now_ms; 7567 if (fullBandConnectedTimeIntervalMilli 7568 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7569 // Increase the interval 7570 fullBandConnectedTimeIntervalMilli 7571 = fullBandConnectedTimeIntervalMilli 7572 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7573 7574 if (DBG) { 7575 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7576 + fullBandConnectedTimeIntervalMilli); 7577 } 7578 } 7579 handleScanRequest( 7580 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7581 } else { 7582 if (!startScanForConfiguration( 7583 currentConfiguration, restrictChannelList)) { 7584 if (DBG) { 7585 loge("WifiStateMachine starting scan, " + 7586 " did not find channels -> full"); 7587 } 7588 lastFullBandConnectedTimeMilli = now_ms; 7589 if (fullBandConnectedTimeIntervalMilli 7590 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7591 // Increase the interval 7592 fullBandConnectedTimeIntervalMilli 7593 = fullBandConnectedTimeIntervalMilli 7594 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7595 7596 if (DBG) { 7597 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7598 + fullBandConnectedTimeIntervalMilli); 7599 } 7600 } 7601 handleScanRequest( 7602 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7603 } 7604 } 7605 7606 } else { 7607 loge("CMD_START_SCAN : connected mode and no configuration"); 7608 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7609 } 7610 } else { 7611 // Not scan alarm source 7612 return NOT_HANDLED; 7613 } 7614 break; 7615 /* Ignore connection to same network */ 7616 case WifiManager.CONNECT_NETWORK: 7617 int netId = message.arg1; 7618 if (mWifiInfo.getNetworkId() == netId) { 7619 break; 7620 } 7621 return NOT_HANDLED; 7622 /* Ignore */ 7623 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7624 break; 7625 case CMD_RSSI_POLL: 7626 if (message.arg1 == mRssiPollToken) { 7627 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7628 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7629 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7630 if (stats != null) { 7631 // Sanity check the results provided by driver 7632 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7633 && (stats.rssi_mgmt == 0 7634 || stats.beacon_rx == 0)) { 7635 stats = null; 7636 } 7637 } 7638 // Get Info and continue polling 7639 fetchRssiLinkSpeedAndFrequencyNative(); 7640 calculateWifiScore(stats); 7641 } 7642 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7643 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7644 7645 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7646 } else { 7647 // Polling has completed 7648 } 7649 break; 7650 case CMD_ENABLE_RSSI_POLL: 7651 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7652 mEnableRssiPolling = (message.arg1 == 1); 7653 } else { 7654 mEnableRssiPolling = false; 7655 } 7656 mRssiPollToken++; 7657 if (mEnableRssiPolling) { 7658 // First poll 7659 fetchRssiLinkSpeedAndFrequencyNative(); 7660 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7661 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7662 } else { 7663 cleanWifiScore(); 7664 } 7665 break; 7666 case WifiManager.RSSI_PKTCNT_FETCH: 7667 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7668 fetchRssiLinkSpeedAndFrequencyNative(); 7669 info.rssi = mWifiInfo.getRssi(); 7670 fetchPktcntNative(info); 7671 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7672 break; 7673 case CMD_DELAYED_NETWORK_DISCONNECT: 7674 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7675 7676 // Ignore if we are not debouncing 7677 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7678 + message.arg1); 7679 return HANDLED; 7680 } else { 7681 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7682 + message.arg1); 7683 7684 linkDebouncing = false; 7685 // If we are still debouncing while this message comes, 7686 // it means we were not able to reconnect within the alloted time 7687 // = LINK_FLAPPING_DEBOUNCE_MSEC 7688 // and thus, trigger a real disconnect 7689 handleNetworkDisconnect(); 7690 transitionTo(mDisconnectedState); 7691 } 7692 break; 7693 case CMD_ASSOCIATED_BSSID: 7694 if ((String) message.obj == null) { 7695 loge("Associated command w/o BSSID"); 7696 break; 7697 } 7698 mLastBssid = (String) message.obj; 7699 if (mLastBssid != null 7700 && (mWifiInfo.getBSSID() == null 7701 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7702 mWifiInfo.setBSSID((String) message.obj); 7703 sendNetworkStateChangeBroadcast(mLastBssid); 7704 } 7705 break; 7706 default: 7707 return NOT_HANDLED; 7708 } 7709 7710 return HANDLED; 7711 } 7712 } 7713 7714 class ObtainingIpState extends State { 7715 @Override 7716 public void enter() { 7717 if (DBG) { 7718 String key = ""; 7719 if (getCurrentWifiConfiguration() != null) { 7720 key = getCurrentWifiConfiguration().configKey(); 7721 } 7722 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7723 + " " + key + " " 7724 + " roam=" + mAutoRoaming 7725 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7726 + " watchdog= " + obtainingIpWatchdogCount); 7727 } 7728 7729 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7730 // We might still be roaming 7731 linkDebouncing = false; 7732 7733 // Send event to CM & network change broadcast 7734 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7735 7736 // We must clear the config BSSID, as the wifi chipset may decide to roam 7737 // from this point on and having the BSSID specified in the network block would 7738 // cause the roam to faile and the device to disconnect 7739 clearCurrentConfigBSSID("ObtainingIpAddress"); 7740 7741 try { 7742 mNwService.enableIpv6(mInterfaceName); 7743 } catch (RemoteException re) { 7744 loge("Failed to enable IPv6: " + re); 7745 } catch (IllegalStateException e) { 7746 loge("Failed to enable IPv6: " + e); 7747 } 7748 7749 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7750 if (isRoaming()) { 7751 renewDhcp(); 7752 } else { 7753 // Remove any IP address on the interface in case we're switching from static 7754 // IP configuration to DHCP. This is safe because if we get here when not 7755 // roaming, we don't have a usable address. 7756 clearIPv4Address(mInterfaceName); 7757 startDhcp(); 7758 } 7759 obtainingIpWatchdogCount++; 7760 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7761 // Get Link layer stats so as we get fresh tx packet counters 7762 getWifiLinkLayerStats(true); 7763 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7764 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7765 } else { 7766 // stop any running dhcp before assigning static IP 7767 stopDhcp(); 7768 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7769 mLastNetworkId); 7770 if (config.ipAddress == null) { 7771 loge("Static IP lacks address"); 7772 sendMessage(CMD_STATIC_IP_FAILURE); 7773 } else { 7774 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7775 ifcg.setLinkAddress(config.ipAddress); 7776 ifcg.setInterfaceUp(); 7777 try { 7778 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7779 if (DBG) log("Static IP configuration succeeded"); 7780 DhcpResults dhcpResults = new DhcpResults(config); 7781 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7782 } catch (RemoteException re) { 7783 loge("Static IP configuration failed: " + re); 7784 sendMessage(CMD_STATIC_IP_FAILURE); 7785 } catch (IllegalStateException e) { 7786 loge("Static IP configuration failed: " + e); 7787 sendMessage(CMD_STATIC_IP_FAILURE); 7788 } 7789 } 7790 } 7791 } 7792 @Override 7793 public boolean processMessage(Message message) { 7794 logStateAndMessage(message, getClass().getSimpleName()); 7795 7796 switch(message.what) { 7797 case CMD_STATIC_IP_SUCCESS: 7798 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7799 break; 7800 case CMD_STATIC_IP_FAILURE: 7801 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7802 break; 7803 case CMD_AUTO_CONNECT: 7804 case CMD_AUTO_ROAM: 7805 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7806 break; 7807 case WifiManager.SAVE_NETWORK: 7808 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7809 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7810 deferMessage(message); 7811 break; 7812 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7813 case CMD_SET_HIGH_PERF_MODE: 7814 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7815 deferMessage(message); 7816 break; 7817 /* Defer scan request since we should not switch to other channels at DHCP */ 7818 case CMD_START_SCAN: 7819 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7820 deferMessage(message); 7821 break; 7822 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7823 if (message.arg1 == obtainingIpWatchdogCount) { 7824 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7825 + obtainingIpWatchdogCount); 7826 handleIpConfigurationLost(); 7827 transitionTo(mDisconnectingState); 7828 break; 7829 } 7830 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7831 break; 7832 default: 7833 return NOT_HANDLED; 7834 } 7835 return HANDLED; 7836 } 7837 } 7838 7839 class VerifyingLinkState extends State { 7840 @Override 7841 public void enter() { 7842 log(getName() + " enter"); 7843 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7844 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7845 sendNetworkStateChangeBroadcast(mLastBssid); 7846 // End roaming 7847 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7848 } 7849 @Override 7850 public boolean processMessage(Message message) { 7851 logStateAndMessage(message, getClass().getSimpleName()); 7852 7853 switch (message.what) { 7854 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7855 // Stay here 7856 log(getName() + " POOR_LINK_DETECTED: no transition"); 7857 break; 7858 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7859 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7860 7861 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7862 sendConnectedState(); 7863 transitionTo(mConnectedState); 7864 break; 7865 default: 7866 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7867 return NOT_HANDLED; 7868 } 7869 return HANDLED; 7870 } 7871 } 7872 7873 private void sendConnectedState() { 7874 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7875 // existing behaviour. The captive portal check really happens after we 7876 // transition into DetailedState.CONNECTED. 7877 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7878 mWifiConfigStore.updateStatus(mLastNetworkId, 7879 DetailedState.CAPTIVE_PORTAL_CHECK); 7880 sendNetworkStateChangeBroadcast(mLastBssid); 7881 7882 // If this network was explicitly selected by the user, evaluate whether to call 7883 // explicitlySelected() so the system can treat it appropriately. 7884 WifiConfiguration config = getCurrentWifiConfiguration(); 7885 if (mWifiConfigStore.isLastSelectedConfiguration(config)) { 7886 boolean prompt = mWifiConfigStore.checkConfigOverridePermission(config.lastConnectUid); 7887 if (DBG) { 7888 log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt); 7889 } 7890 if (prompt) { 7891 // Selected by the user via Settings or QuickSettings. If this network has Internet 7892 // access, switch to it. Otherwise, switch to it only if the user confirms that they 7893 // really want to switch, or has already confirmed and selected "Don't ask again". 7894 if (DBG) { 7895 log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected); 7896 } 7897 mNetworkAgent.explicitlySelected(config.noInternetAccessExpected); 7898 } 7899 } 7900 7901 setNetworkDetailedState(DetailedState.CONNECTED); 7902 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7903 sendNetworkStateChangeBroadcast(mLastBssid); 7904 } 7905 7906 class RoamingState extends State { 7907 boolean mAssociated; 7908 @Override 7909 public void enter() { 7910 if (DBG) { 7911 log("RoamingState Enter" 7912 + " mScreenOn=" + mScreenOn ); 7913 } 7914 setScanAlarm(false); 7915 7916 // Make sure we disconnect if roaming fails 7917 roamWatchdogCount++; 7918 loge("Start Roam Watchdog " + roamWatchdogCount); 7919 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7920 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7921 mAssociated = false; 7922 } 7923 @Override 7924 public boolean processMessage(Message message) { 7925 logStateAndMessage(message, getClass().getSimpleName()); 7926 WifiConfiguration config; 7927 switch (message.what) { 7928 case CMD_IP_CONFIGURATION_LOST: 7929 config = getCurrentWifiConfiguration(); 7930 if (config != null) { 7931 mWifiConfigStore.noteRoamingFailure(config, 7932 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 7933 } 7934 return NOT_HANDLED; 7935 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7936 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7937 return HANDLED; 7938 case CMD_UNWANTED_NETWORK: 7939 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7940 return HANDLED; 7941 case CMD_SET_OPERATIONAL_MODE: 7942 if (message.arg1 != CONNECT_MODE) { 7943 deferMessage(message); 7944 } 7945 break; 7946 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7947 /** 7948 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7949 * before NETWORK_DISCONNECTION_EVENT 7950 * And there is an associated BSSID corresponding to our target BSSID, then 7951 * we have missed the network disconnection, transition to mDisconnectedState 7952 * and handle the rest of the events there. 7953 */ 7954 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7955 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7956 || stateChangeResult.state == SupplicantState.INACTIVE 7957 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7958 if (DBG) { 7959 log("STATE_CHANGE_EVENT in roaming state " 7960 + stateChangeResult.toString() ); 7961 } 7962 if (stateChangeResult.BSSID != null 7963 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7964 handleNetworkDisconnect(); 7965 transitionTo(mDisconnectedState); 7966 } 7967 } 7968 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7969 // We completed the layer2 roaming part 7970 mAssociated = true; 7971 if (stateChangeResult.BSSID != null) { 7972 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7973 } 7974 } 7975 break; 7976 case CMD_ROAM_WATCHDOG_TIMER: 7977 if (roamWatchdogCount == message.arg1) { 7978 if (DBG) log("roaming watchdog! -> disconnect"); 7979 mRoamFailCount++; 7980 handleNetworkDisconnect(); 7981 mWifiNative.disconnect(); 7982 transitionTo(mDisconnectedState); 7983 } 7984 break; 7985 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7986 if (mAssociated) { 7987 if (DBG) log("roaming and Network connection established"); 7988 mLastNetworkId = message.arg1; 7989 mLastBssid = (String) message.obj; 7990 mWifiInfo.setBSSID(mLastBssid); 7991 mWifiInfo.setNetworkId(mLastNetworkId); 7992 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7993 sendNetworkStateChangeBroadcast(mLastBssid); 7994 transitionTo(mObtainingIpState); 7995 } else { 7996 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7997 } 7998 break; 7999 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8000 // Throw away but only if it corresponds to the network we're roaming to 8001 String bssid = (String)message.obj; 8002 if (true) { 8003 String target = ""; 8004 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8005 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8006 + " BSSID=" + bssid 8007 + " target=" + target); 8008 } 8009 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8010 handleNetworkDisconnect(); 8011 transitionTo(mDisconnectedState); 8012 } 8013 break; 8014 case WifiMonitor.SSID_TEMP_DISABLED: 8015 // Auth error while roaming 8016 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8017 + " id=" + Integer.toString(message.arg1) 8018 + " isRoaming=" + isRoaming() 8019 + " roam=" + Integer.toString(mAutoRoaming)); 8020 if (message.arg1 == mLastNetworkId) { 8021 config = getCurrentWifiConfiguration(); 8022 if (config != null) { 8023 mWifiConfigStore.noteRoamingFailure(config, 8024 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8025 } 8026 handleNetworkDisconnect(); 8027 transitionTo(mDisconnectingState); 8028 } 8029 return NOT_HANDLED; 8030 case CMD_START_SCAN: 8031 deferMessage(message); 8032 break; 8033 default: 8034 return NOT_HANDLED; 8035 } 8036 return HANDLED; 8037 } 8038 8039 @Override 8040 public void exit() { 8041 loge("WifiStateMachine: Leaving Roaming state"); 8042 } 8043 } 8044 8045 class ConnectedState extends State { 8046 @Override 8047 public void enter() { 8048 String address; 8049 updateDefaultRouteMacAddress(1000); 8050 if (DBG) { 8051 log("ConnectedState EEnter " 8052 + " mScreenOn=" + mScreenOn 8053 + " scanperiod=" 8054 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli.get()) ); 8055 } 8056 8057 configureLazyRoam(); 8058 if (mScreenOn 8059 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8060 if (mAlwaysOnPnoSupported) { 8061 startPno(); 8062 } else { 8063 // restart scan alarm 8064 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli.get(), 8065 null, null); 8066 } 8067 } 8068 registerConnected(); 8069 lastConnectAttempt = 0; 8070 targetWificonfiguration = null; 8071 // Paranoia 8072 linkDebouncing = false; 8073 8074 // Not roaming anymore 8075 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8076 8077 if (testNetworkDisconnect) { 8078 testNetworkDisconnectCounter++; 8079 loge("ConnectedState Enter start disconnect test " + 8080 testNetworkDisconnectCounter); 8081 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8082 testNetworkDisconnectCounter, 0), 15000); 8083 } 8084 8085 // Reenable all networks, allow for hidden networks to be scanned 8086 mWifiConfigStore.enableAllNetworks(); 8087 8088 mLastDriverRoamAttempt = 0; 8089 8090 //startLazyRoam(); 8091 } 8092 @Override 8093 public boolean processMessage(Message message) { 8094 WifiConfiguration config = null; 8095 logStateAndMessage(message, getClass().getSimpleName()); 8096 8097 switch (message.what) { 8098 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8099 if (DBG) log("Watchdog reports poor link"); 8100 transitionTo(mVerifyingLinkState); 8101 break; 8102 case CMD_UNWANTED_NETWORK: 8103 if (message.arg1 == network_status_unwanted_disconnect) { 8104 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8105 mWifiNative.disconnect(); 8106 transitionTo(mDisconnectingState); 8107 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8108 config = getCurrentWifiConfiguration(); 8109 if (config != null) { 8110 // Disable autojoin 8111 config.numNoInternetAccessReports += 1; 8112 } 8113 } 8114 return HANDLED; 8115 case CMD_NETWORK_STATUS: 8116 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8117 config = getCurrentWifiConfiguration(); 8118 if (config != null) { 8119 // re-enable autojoin 8120 config.numNoInternetAccessReports = 0; 8121 config.validatedInternetAccess = true; 8122 } 8123 } 8124 return HANDLED; 8125 case CMD_ACCEPT_UNVALIDATED: 8126 boolean accept = (message.arg1 != 0); 8127 config = getCurrentWifiConfiguration(); 8128 if (config != null) { 8129 config.noInternetAccessExpected = accept; 8130 } 8131 return HANDLED; 8132 case CMD_TEST_NETWORK_DISCONNECT: 8133 // Force a disconnect 8134 if (message.arg1 == testNetworkDisconnectCounter) { 8135 mWifiNative.disconnect(); 8136 } 8137 break; 8138 case CMD_ASSOCIATED_BSSID: 8139 // ASSOCIATING to a new BSSID while already connected, indicates 8140 // that driver is roaming 8141 mLastDriverRoamAttempt = System.currentTimeMillis(); 8142 String toBSSID = (String)message.obj; 8143 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8144 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8145 } 8146 return NOT_HANDLED; 8147 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8148 long lastRoam = 0; 8149 if (mLastDriverRoamAttempt != 0) { 8150 // Calculate time since last driver roam attempt 8151 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8152 mLastDriverRoamAttempt = 0; 8153 } 8154 config = getCurrentWifiConfiguration(); 8155 if (mScreenOn 8156 && !linkDebouncing 8157 && config != null 8158 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8159 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8160 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8161 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8162 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8163 && mWifiInfo.getRssi() > 8164 WifiConfiguration.BAD_RSSI_24) 8165 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8166 && mWifiInfo.getRssi() > 8167 WifiConfiguration.BAD_RSSI_5))) { 8168 // Start de-bouncing the L2 disconnection: 8169 // this L2 disconnection might be spurious. 8170 // Hence we allow 7 seconds for the state machine to try 8171 // to reconnect, go thru the 8172 // roaming cycle and enter Obtaining IP address 8173 // before signalling the disconnect to ConnectivityService and L3 8174 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8175 linkDebouncing = true; 8176 8177 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8178 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8179 if (DBG) { 8180 log("NETWORK_DISCONNECTION_EVENT in connected state" 8181 + " BSSID=" + mWifiInfo.getBSSID() 8182 + " RSSI=" + mWifiInfo.getRssi() 8183 + " freq=" + mWifiInfo.getFrequency() 8184 + " reason=" + message.arg2 8185 + " -> debounce"); 8186 } 8187 return HANDLED; 8188 } else { 8189 if (DBG) { 8190 int ajst = -1; 8191 if (config != null) ajst = config.autoJoinStatus; 8192 log("NETWORK_DISCONNECTION_EVENT in connected state" 8193 + " BSSID=" + mWifiInfo.getBSSID() 8194 + " RSSI=" + mWifiInfo.getRssi() 8195 + " freq=" + mWifiInfo.getFrequency() 8196 + " was debouncing=" + linkDebouncing 8197 + " reason=" + message.arg2 8198 + " ajst=" + ajst); 8199 } 8200 } 8201 break; 8202 case CMD_AUTO_ROAM: 8203 // Clear the driver roam indication since we are attempting a framework roam 8204 mLastDriverRoamAttempt = 0; 8205 8206 /* Connect command coming from auto-join */ 8207 ScanResult candidate = (ScanResult)message.obj; 8208 String bssid = "any"; 8209 if (candidate != null && candidate.is5GHz()) { 8210 // Only lock BSSID for 5GHz networks 8211 bssid = candidate.BSSID; 8212 } 8213 int netId = mLastNetworkId; 8214 config = getCurrentWifiConfiguration(); 8215 8216 8217 if (config == null) { 8218 loge("AUTO_ROAM and no config, bail out..."); 8219 break; 8220 } 8221 8222 loge("CMD_AUTO_ROAM sup state " 8223 + mSupplicantStateTracker.getSupplicantStateName() 8224 + " my state " + getCurrentState().getName() 8225 + " nid=" + Integer.toString(netId) 8226 + " config " + config.configKey() 8227 + " roam=" + Integer.toString(message.arg2) 8228 + " to " + bssid 8229 + " targetRoamBSSID " + mTargetRoamBSSID); 8230 8231 /* Save the BSSID so as to lock it @ firmware */ 8232 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8233 loge("AUTO_ROAM nothing to do"); 8234 // Same BSSID, nothing to do 8235 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8236 break; 8237 }; 8238 8239 // Make sure the network is enabled, since supplicant will not re-enable it 8240 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8241 8242 if (deferForUserInput(message, netId, false)) { 8243 break; 8244 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8245 WifiConfiguration.USER_BANNED) { 8246 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8247 WifiManager.NOT_AUTHORIZED); 8248 break; 8249 } 8250 8251 boolean ret = false; 8252 if (mLastNetworkId != netId) { 8253 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false, 8254 WifiConfiguration.UNKNOWN_UID) && mWifiNative.reconnect()) { 8255 ret = true; 8256 } 8257 } else { 8258 ret = mWifiNative.reassociate(); 8259 } 8260 if (ret) { 8261 lastConnectAttempt = System.currentTimeMillis(); 8262 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8263 8264 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8265 mAutoRoaming = message.arg2; 8266 transitionTo(mRoamingState); 8267 8268 } else { 8269 loge("Failed to connect config: " + config + " netId: " + netId); 8270 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8271 WifiManager.ERROR); 8272 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8273 break; 8274 } 8275 break; 8276 default: 8277 return NOT_HANDLED; 8278 } 8279 return HANDLED; 8280 } 8281 8282 @Override 8283 public void exit() { 8284 loge("WifiStateMachine: Leaving Connected state"); 8285 setScanAlarm(false); 8286 mLastDriverRoamAttempt = 0; 8287 8288 stopLazyRoam(); 8289 } 8290 } 8291 8292 class DisconnectingState extends State { 8293 8294 @Override 8295 public void enter() { 8296 8297 if (PDBG) { 8298 loge(" Enter DisconnectingState State scan interval " 8299 + mWifiConfigStore.wifiDisconnectedScanIntervalMs 8300 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8301 + " screenOn=" + mScreenOn); 8302 } 8303 8304 // Make sure we disconnect: we enter this state prior to connecting to a new 8305 // network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE 8306 // event which in this case will be indicating that supplicant started to associate. 8307 // In some cases supplicant doesn't ignore the connect requests (it might not 8308 // find the target SSID in its cache), 8309 // Therefore we end up stuck that state, hence the need for the watchdog. 8310 disconnectingWatchdogCount++; 8311 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8312 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8313 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8314 } 8315 8316 @Override 8317 public boolean processMessage(Message message) { 8318 logStateAndMessage(message, getClass().getSimpleName()); 8319 switch (message.what) { 8320 case CMD_SET_OPERATIONAL_MODE: 8321 if (message.arg1 != CONNECT_MODE) { 8322 deferMessage(message); 8323 } 8324 break; 8325 case CMD_START_SCAN: 8326 deferMessage(message); 8327 return HANDLED; 8328 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8329 if (disconnectingWatchdogCount == message.arg1) { 8330 if (DBG) log("disconnecting watchdog! -> disconnect"); 8331 handleNetworkDisconnect(); 8332 transitionTo(mDisconnectedState); 8333 } 8334 break; 8335 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8336 /** 8337 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8338 * we have missed the network disconnection, transition to mDisconnectedState 8339 * and handle the rest of the events there 8340 */ 8341 deferMessage(message); 8342 handleNetworkDisconnect(); 8343 transitionTo(mDisconnectedState); 8344 break; 8345 default: 8346 return NOT_HANDLED; 8347 } 8348 return HANDLED; 8349 } 8350 } 8351 8352 class DisconnectedState extends State { 8353 @Override 8354 public void enter() { 8355 // We dont scan frequently if this is a temporary disconnect 8356 // due to p2p 8357 if (mTemporarilyDisconnectWifi) { 8358 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8359 return; 8360 } 8361 8362 if (PDBG) { 8363 loge(" Enter disconnected State scan interval " 8364 + mWifiConfigStore.wifiDisconnectedScanIntervalMs.get() 8365 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8366 + " screenOn=" + mScreenOn); 8367 } 8368 8369 /** clear the roaming state, if we were roaming, we failed */ 8370 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8371 8372 if (!startPno()) { 8373 if (mScreenOn) { 8374 /** 8375 * screen lit and => delayed timer 8376 */ 8377 startDelayedScan(mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(), 8378 null, null); 8379 } else { 8380 /** 8381 * screen dark and PNO supported => scan alarm disabled 8382 */ 8383 if (mEnableBackgroundScan) { 8384 /* If a regular scan result is pending, do not initiate background 8385 * scan until the scan results are returned. This is needed because 8386 * initiating a background scan will cancel the regular scan and 8387 * scan results will not be returned until background scanning is 8388 * cleared 8389 */ 8390 if (!mIsScanOngoing) { 8391 enableBackgroundScan(true); 8392 } 8393 } else { 8394 setScanAlarm(true); 8395 } 8396 } 8397 } 8398 8399 /** 8400 * If we have no networks saved, the supplicant stops doing the periodic scan. 8401 * The scans are useful to notify the user of the presence of an open network. 8402 * Note that these are not wake up scans. 8403 */ 8404 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8405 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8406 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8407 } 8408 8409 mDisconnectedTimeStamp = System.currentTimeMillis(); 8410 8411 } 8412 @Override 8413 public boolean processMessage(Message message) { 8414 boolean ret = HANDLED; 8415 8416 logStateAndMessage(message, getClass().getSimpleName()); 8417 8418 switch (message.what) { 8419 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8420 if (mP2pConnected.get()) break; 8421 if (message.arg1 == mPeriodicScanToken && 8422 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8423 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8424 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8425 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8426 } 8427 break; 8428 case WifiManager.FORGET_NETWORK: 8429 case CMD_REMOVE_NETWORK: 8430 case CMD_REMOVE_APP_CONFIGURATIONS: 8431 case CMD_REMOVE_USER_CONFIGURATIONS: 8432 // Set up a delayed message here. After the forget/remove is handled 8433 // the handled delayed message will determine if there is a need to 8434 // scan and continue 8435 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8436 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8437 ret = NOT_HANDLED; 8438 break; 8439 case CMD_SET_OPERATIONAL_MODE: 8440 if (message.arg1 != CONNECT_MODE) { 8441 mOperationalMode = message.arg1; 8442 8443 mWifiConfigStore.disableAllNetworks(); 8444 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8445 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8446 setWifiState(WIFI_STATE_DISABLED); 8447 } 8448 transitionTo(mScanModeState); 8449 } 8450 mWifiConfigStore. 8451 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8452 break; 8453 /* Ignore network disconnect */ 8454 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8455 break; 8456 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8457 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8458 if (DBG) { 8459 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8460 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8461 + " debouncing=" + linkDebouncing); 8462 } 8463 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8464 /* ConnectModeState does the rest of the handling */ 8465 ret = NOT_HANDLED; 8466 break; 8467 case CMD_START_SCAN: 8468 if (!checkOrDeferScanAllowed(message)) { 8469 // The scan request was rescheduled 8470 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8471 return HANDLED; 8472 } 8473 /* Disable background scan temporarily during a regular scan */ 8474 if (mEnableBackgroundScan) { 8475 enableBackgroundScan(false); 8476 } 8477 if (message.arg1 == SCAN_ALARM_SOURCE) { 8478 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8479 // not be processed) and restart the scan 8480 int period = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 8481 if (mP2pConnected.get()) { 8482 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8483 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8484 period); 8485 } 8486 if (!checkAndRestartDelayedScan(message.arg2, 8487 true, period, null, null)) { 8488 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8489 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8490 + message.arg1 8491 + " " + message.arg2 + ", " + mDelayedScanCounter 8492 + " -> obsolete"); 8493 return HANDLED; 8494 } 8495 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8496 ret = HANDLED; 8497 } else { 8498 ret = NOT_HANDLED; 8499 } 8500 break; 8501 case WifiMonitor.SCAN_RESULTS_EVENT: 8502 /* Re-enable background scan when a pending scan result is received */ 8503 if (mEnableBackgroundScan && mIsScanOngoing) { 8504 enableBackgroundScan(true); 8505 } 8506 /* Handled in parent state */ 8507 ret = NOT_HANDLED; 8508 break; 8509 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8510 NetworkInfo info = (NetworkInfo) message.obj; 8511 mP2pConnected.set(info.isConnected()); 8512 if (mP2pConnected.get()) { 8513 int defaultInterval = mContext.getResources().getInteger( 8514 R.integer.config_wifi_scan_interval_p2p_connected); 8515 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8516 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8517 defaultInterval); 8518 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8519 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8520 if (DBG) log("Turn on scanning after p2p disconnected"); 8521 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8522 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8523 } else { 8524 // If P2P is not connected and there are saved networks, then restart 8525 // scanning at the normal period. This is necessary because scanning might 8526 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8527 // was set to zero. 8528 if (!startPno()) { 8529 startDelayedScan(mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(), 8530 null, null); 8531 } 8532 } 8533 break; 8534 case CMD_RECONNECT: 8535 case CMD_REASSOCIATE: 8536 if (mTemporarilyDisconnectWifi) { 8537 // Drop a third party reconnect/reassociate if STA is 8538 // temporarily disconnected for p2p 8539 break; 8540 } else { 8541 // ConnectModeState handles it 8542 ret = NOT_HANDLED; 8543 } 8544 break; 8545 case CMD_SCREEN_STATE_CHANGED: 8546 handleScreenStateChanged(message.arg1 != 0, 8547 /* startBackgroundScanIfNeeded = */ true); 8548 break; 8549 default: 8550 ret = NOT_HANDLED; 8551 } 8552 return ret; 8553 } 8554 8555 @Override 8556 public void exit() { 8557 /* No need for a background scan upon exit from a disconnected state */ 8558 if (mEnableBackgroundScan) { 8559 enableBackgroundScan(false); 8560 } 8561 setScanAlarm(false); 8562 } 8563 } 8564 8565 class WpsRunningState extends State { 8566 // Tracks the source to provide a reply 8567 private Message mSourceMessage; 8568 @Override 8569 public void enter() { 8570 mSourceMessage = Message.obtain(getCurrentMessage()); 8571 } 8572 @Override 8573 public boolean processMessage(Message message) { 8574 logStateAndMessage(message, getClass().getSimpleName()); 8575 8576 switch (message.what) { 8577 case WifiMonitor.WPS_SUCCESS_EVENT: 8578 // Ignore intermediate success, wait for full connection 8579 break; 8580 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8581 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8582 mSourceMessage.recycle(); 8583 mSourceMessage = null; 8584 deferMessage(message); 8585 transitionTo(mDisconnectedState); 8586 break; 8587 case WifiMonitor.WPS_OVERLAP_EVENT: 8588 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8589 WifiManager.WPS_OVERLAP_ERROR); 8590 mSourceMessage.recycle(); 8591 mSourceMessage = null; 8592 transitionTo(mDisconnectedState); 8593 break; 8594 case WifiMonitor.WPS_FAIL_EVENT: 8595 // Arg1 has the reason for the failure 8596 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8597 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8598 mSourceMessage.recycle(); 8599 mSourceMessage = null; 8600 transitionTo(mDisconnectedState); 8601 } else { 8602 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8603 } 8604 break; 8605 case WifiMonitor.WPS_TIMEOUT_EVENT: 8606 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8607 WifiManager.WPS_TIMED_OUT); 8608 mSourceMessage.recycle(); 8609 mSourceMessage = null; 8610 transitionTo(mDisconnectedState); 8611 break; 8612 case WifiManager.START_WPS: 8613 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8614 break; 8615 case WifiManager.CANCEL_WPS: 8616 if (mWifiNative.cancelWps()) { 8617 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8618 } else { 8619 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8620 } 8621 transitionTo(mDisconnectedState); 8622 break; 8623 /** 8624 * Defer all commands that can cause connections to a different network 8625 * or put the state machine out of connect mode 8626 */ 8627 case CMD_STOP_DRIVER: 8628 case CMD_SET_OPERATIONAL_MODE: 8629 case WifiManager.CONNECT_NETWORK: 8630 case CMD_ENABLE_NETWORK: 8631 case CMD_RECONNECT: 8632 case CMD_REASSOCIATE: 8633 case CMD_ENABLE_ALL_NETWORKS: 8634 deferMessage(message); 8635 break; 8636 case CMD_AUTO_CONNECT: 8637 case CMD_AUTO_ROAM: 8638 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8639 return HANDLED; 8640 case CMD_START_SCAN: 8641 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8642 return HANDLED; 8643 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8644 if (DBG) log("Network connection lost"); 8645 handleNetworkDisconnect(); 8646 break; 8647 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8648 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8649 break; 8650 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8651 // Disregard auth failure events during WPS connection. The 8652 // EAP sequence is retried several times, and there might be 8653 // failures (especially for wps pin). We will get a WPS_XXX 8654 // event at the end of the sequence anyway. 8655 if (DBG) log("Ignore auth failure during WPS connection"); 8656 break; 8657 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8658 // Throw away supplicant state changes when WPS is running. 8659 // We will start getting supplicant state changes once we get 8660 // a WPS success or failure 8661 break; 8662 default: 8663 return NOT_HANDLED; 8664 } 8665 return HANDLED; 8666 } 8667 8668 @Override 8669 public void exit() { 8670 mWifiConfigStore.enableAllNetworks(); 8671 mWifiConfigStore.loadConfiguredNetworks(); 8672 } 8673 } 8674 8675 class SoftApStartingState extends State { 8676 @Override 8677 public void enter() { 8678 final Message message = getCurrentMessage(); 8679 if (message.what == CMD_START_AP) { 8680 final WifiConfiguration config = (WifiConfiguration) message.obj; 8681 8682 if (config == null) { 8683 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8684 } else { 8685 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8686 startSoftApWithConfig(config); 8687 } 8688 } else { 8689 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8690 } 8691 } 8692 @Override 8693 public boolean processMessage(Message message) { 8694 logStateAndMessage(message, getClass().getSimpleName()); 8695 8696 switch(message.what) { 8697 case CMD_START_SUPPLICANT: 8698 case CMD_STOP_SUPPLICANT: 8699 case CMD_START_AP: 8700 case CMD_STOP_AP: 8701 case CMD_START_DRIVER: 8702 case CMD_STOP_DRIVER: 8703 case CMD_SET_OPERATIONAL_MODE: 8704 case CMD_SET_COUNTRY_CODE: 8705 case CMD_SET_FREQUENCY_BAND: 8706 case CMD_START_PACKET_FILTERING: 8707 case CMD_STOP_PACKET_FILTERING: 8708 case CMD_TETHER_STATE_CHANGE: 8709 deferMessage(message); 8710 break; 8711 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8712 WifiConfiguration config = (WifiConfiguration) message.obj; 8713 if (config != null) { 8714 startSoftApWithConfig(config); 8715 } else { 8716 loge("Softap config is null!"); 8717 sendMessage(CMD_START_AP_FAILURE); 8718 } 8719 break; 8720 case CMD_START_AP_SUCCESS: 8721 setWifiApState(WIFI_AP_STATE_ENABLED); 8722 transitionTo(mSoftApStartedState); 8723 break; 8724 case CMD_START_AP_FAILURE: 8725 setWifiApState(WIFI_AP_STATE_FAILED); 8726 transitionTo(mInitialState); 8727 break; 8728 default: 8729 return NOT_HANDLED; 8730 } 8731 return HANDLED; 8732 } 8733 } 8734 8735 class SoftApStartedState extends State { 8736 @Override 8737 public boolean processMessage(Message message) { 8738 logStateAndMessage(message, getClass().getSimpleName()); 8739 8740 switch(message.what) { 8741 case CMD_STOP_AP: 8742 if (DBG) log("Stopping Soft AP"); 8743 /* We have not tethered at this point, so we just shutdown soft Ap */ 8744 try { 8745 mNwService.stopAccessPoint(mInterfaceName); 8746 } catch(Exception e) { 8747 loge("Exception in stopAccessPoint()"); 8748 } 8749 setWifiApState(WIFI_AP_STATE_DISABLED); 8750 transitionTo(mInitialState); 8751 break; 8752 case CMD_START_AP: 8753 // Ignore a start on a running access point 8754 break; 8755 // Fail client mode operation when soft AP is enabled 8756 case CMD_START_SUPPLICANT: 8757 loge("Cannot start supplicant with a running soft AP"); 8758 setWifiState(WIFI_STATE_UNKNOWN); 8759 break; 8760 case CMD_TETHER_STATE_CHANGE: 8761 TetherStateChange stateChange = (TetherStateChange) message.obj; 8762 if (startTethering(stateChange.available)) { 8763 transitionTo(mTetheringState); 8764 } 8765 break; 8766 default: 8767 return NOT_HANDLED; 8768 } 8769 return HANDLED; 8770 } 8771 } 8772 8773 class TetheringState extends State { 8774 @Override 8775 public void enter() { 8776 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8777 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8778 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8779 } 8780 @Override 8781 public boolean processMessage(Message message) { 8782 logStateAndMessage(message, getClass().getSimpleName()); 8783 8784 switch(message.what) { 8785 case CMD_TETHER_STATE_CHANGE: 8786 TetherStateChange stateChange = (TetherStateChange) message.obj; 8787 if (isWifiTethered(stateChange.active)) { 8788 transitionTo(mTetheredState); 8789 } 8790 return HANDLED; 8791 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8792 if (message.arg1 == mTetherToken) { 8793 loge("Failed to get tether update, shutdown soft access point"); 8794 transitionTo(mSoftApStartedState); 8795 // Needs to be first thing handled 8796 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8797 } 8798 break; 8799 case CMD_START_SUPPLICANT: 8800 case CMD_STOP_SUPPLICANT: 8801 case CMD_START_AP: 8802 case CMD_STOP_AP: 8803 case CMD_START_DRIVER: 8804 case CMD_STOP_DRIVER: 8805 case CMD_SET_OPERATIONAL_MODE: 8806 case CMD_SET_COUNTRY_CODE: 8807 case CMD_SET_FREQUENCY_BAND: 8808 case CMD_START_PACKET_FILTERING: 8809 case CMD_STOP_PACKET_FILTERING: 8810 deferMessage(message); 8811 break; 8812 default: 8813 return NOT_HANDLED; 8814 } 8815 return HANDLED; 8816 } 8817 } 8818 8819 class TetheredState extends State { 8820 @Override 8821 public boolean processMessage(Message message) { 8822 logStateAndMessage(message, getClass().getSimpleName()); 8823 8824 switch(message.what) { 8825 case CMD_TETHER_STATE_CHANGE: 8826 TetherStateChange stateChange = (TetherStateChange) message.obj; 8827 if (!isWifiTethered(stateChange.active)) { 8828 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8829 setHostApRunning(null, false); 8830 setHostApRunning(null, true); 8831 } 8832 return HANDLED; 8833 case CMD_STOP_AP: 8834 if (DBG) log("Untethering before stopping AP"); 8835 setWifiApState(WIFI_AP_STATE_DISABLING); 8836 stopTethering(); 8837 transitionTo(mUntetheringState); 8838 // More work to do after untethering 8839 deferMessage(message); 8840 break; 8841 default: 8842 return NOT_HANDLED; 8843 } 8844 return HANDLED; 8845 } 8846 } 8847 8848 class UntetheringState extends State { 8849 @Override 8850 public void enter() { 8851 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8852 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8853 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8854 8855 } 8856 @Override 8857 public boolean processMessage(Message message) { 8858 logStateAndMessage(message, getClass().getSimpleName()); 8859 8860 switch(message.what) { 8861 case CMD_TETHER_STATE_CHANGE: 8862 TetherStateChange stateChange = (TetherStateChange) message.obj; 8863 8864 /* Wait till wifi is untethered */ 8865 if (isWifiTethered(stateChange.active)) break; 8866 8867 transitionTo(mSoftApStartedState); 8868 break; 8869 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8870 if (message.arg1 == mTetherToken) { 8871 loge("Failed to get tether update, force stop access point"); 8872 transitionTo(mSoftApStartedState); 8873 } 8874 break; 8875 case CMD_START_SUPPLICANT: 8876 case CMD_STOP_SUPPLICANT: 8877 case CMD_START_AP: 8878 case CMD_STOP_AP: 8879 case CMD_START_DRIVER: 8880 case CMD_STOP_DRIVER: 8881 case CMD_SET_OPERATIONAL_MODE: 8882 case CMD_SET_COUNTRY_CODE: 8883 case CMD_SET_FREQUENCY_BAND: 8884 case CMD_START_PACKET_FILTERING: 8885 case CMD_STOP_PACKET_FILTERING: 8886 deferMessage(message); 8887 break; 8888 default: 8889 return NOT_HANDLED; 8890 } 8891 return HANDLED; 8892 } 8893 } 8894 8895 /** 8896 * State machine initiated requests can have replyTo set to null indicating 8897 * there are no recepients, we ignore those reply actions. 8898 */ 8899 private void replyToMessage(Message msg, int what) { 8900 if (msg.replyTo == null) return; 8901 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8902 mReplyChannel.replyToMessage(msg, dstMsg); 8903 } 8904 8905 private void replyToMessage(Message msg, int what, int arg1) { 8906 if (msg.replyTo == null) return; 8907 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8908 dstMsg.arg1 = arg1; 8909 mReplyChannel.replyToMessage(msg, dstMsg); 8910 } 8911 8912 private void replyToMessage(Message msg, int what, Object obj) { 8913 if (msg.replyTo == null) return; 8914 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8915 dstMsg.obj = obj; 8916 mReplyChannel.replyToMessage(msg, dstMsg); 8917 } 8918 8919 /** 8920 * arg2 on the source message has a unique id that needs to be retained in replies 8921 * to match the request 8922 * <p>see WifiManager for details 8923 */ 8924 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 8925 Message msg = Message.obtain(); 8926 msg.what = what; 8927 msg.arg2 = srcMsg.arg2; 8928 return msg; 8929 } 8930 8931 /** 8932 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 8933 * @param msg Must have a WifiConfiguration obj to succeed 8934 */ 8935 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 8936 WifiConfiguration config) { 8937 if (config != null && config.preSharedKey != null) { 8938 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 8939 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 8940 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 8941 wifiCredentialEventType); 8942 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 8943 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 8944 } 8945 } 8946 8947 private static int parseHex(char ch) { 8948 if ('0' <= ch && ch <= '9') { 8949 return ch - '0'; 8950 } else if ('a' <= ch && ch <= 'f') { 8951 return ch - 'a' + 10; 8952 } else if ('A' <= ch && ch <= 'F') { 8953 return ch - 'A' + 10; 8954 } else { 8955 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8956 } 8957 } 8958 8959 private byte[] parseHex(String hex) { 8960 /* This only works for good input; don't throw bad data at it */ 8961 if (hex == null) { 8962 return new byte[0]; 8963 } 8964 8965 if (hex.length() % 2 != 0) { 8966 throw new NumberFormatException(hex + " is not a valid hex string"); 8967 } 8968 8969 byte[] result = new byte[(hex.length())/2 + 1]; 8970 result[0] = (byte) ((hex.length())/2); 8971 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8972 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8973 byte b = (byte) (val & 0xFF); 8974 result[j] = b; 8975 } 8976 8977 return result; 8978 } 8979 8980 private static String makeHex(byte[] bytes) { 8981 StringBuilder sb = new StringBuilder(); 8982 for (byte b : bytes) { 8983 sb.append(String.format("%02x", b)); 8984 } 8985 return sb.toString(); 8986 } 8987 8988 private static String makeHex(byte[] bytes, int from, int len) { 8989 StringBuilder sb = new StringBuilder(); 8990 for (int i = 0; i < len; i++) { 8991 sb.append(String.format("%02x", bytes[from+i])); 8992 } 8993 return sb.toString(); 8994 } 8995 8996 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8997 8998 int len = array1.length + array2.length + array3.length; 8999 9000 if (array1.length != 0) { 9001 len++; /* add another byte for size */ 9002 } 9003 9004 if (array2.length != 0) { 9005 len++; /* add another byte for size */ 9006 } 9007 9008 if (array3.length != 0) { 9009 len++; /* add another byte for size */ 9010 } 9011 9012 byte[] result = new byte[len]; 9013 9014 int index = 0; 9015 if (array1.length != 0) { 9016 result[index] = (byte) (array1.length & 0xFF); 9017 index++; 9018 for (byte b : array1) { 9019 result[index] = b; 9020 index++; 9021 } 9022 } 9023 9024 if (array2.length != 0) { 9025 result[index] = (byte) (array2.length & 0xFF); 9026 index++; 9027 for (byte b : array2) { 9028 result[index] = b; 9029 index++; 9030 } 9031 } 9032 9033 if (array3.length != 0) { 9034 result[index] = (byte) (array3.length & 0xFF); 9035 index++; 9036 for (byte b : array3) { 9037 result[index] = b; 9038 index++; 9039 } 9040 } 9041 return result; 9042 } 9043 9044 private static byte[] concatHex(byte[] array1, byte[] array2) { 9045 9046 int len = array1.length + array2.length; 9047 9048 byte[] result = new byte[len]; 9049 9050 int index = 0; 9051 if (array1.length != 0) { 9052 for (byte b : array1) { 9053 result[index] = b; 9054 index++; 9055 } 9056 } 9057 9058 if (array2.length != 0) { 9059 for (byte b : array2) { 9060 result[index] = b; 9061 index++; 9062 } 9063 } 9064 9065 return result; 9066 } 9067 9068 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9069 if (targetWificonfiguration == null 9070 || targetWificonfiguration.networkId == requestData.networkId) { 9071 logd("id matches targetWifiConfiguration"); 9072 } else { 9073 logd("id does not match targetWifiConfiguration"); 9074 return; 9075 } 9076 9077 TelephonyManager tm = (TelephonyManager) 9078 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9079 9080 if (tm != null) { 9081 StringBuilder sb = new StringBuilder(); 9082 for (String challenge : requestData.data) { 9083 9084 if (challenge == null || challenge.isEmpty()) 9085 continue; 9086 logd("RAND = " + challenge); 9087 9088 byte[] rand = null; 9089 try { 9090 rand = parseHex(challenge); 9091 } catch (NumberFormatException e) { 9092 loge("malformed challenge"); 9093 continue; 9094 } 9095 9096 String base64Challenge = android.util.Base64.encodeToString( 9097 rand, android.util.Base64.NO_WRAP); 9098 /* 9099 * First, try with appType = 2 => USIM according to 9100 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9101 */ 9102 int appType = 2; 9103 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9104 if (tmResponse == null) { 9105 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9106 * appType = 1 => SIM 9107 */ 9108 appType = 1; 9109 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9110 } 9111 logv("Raw Response - " + tmResponse); 9112 9113 if (tmResponse != null && tmResponse.length() > 4) { 9114 byte[] result = android.util.Base64.decode(tmResponse, 9115 android.util.Base64.DEFAULT); 9116 logv("Hex Response -" + makeHex(result)); 9117 int sres_len = result[0]; 9118 String sres = makeHex(result, 1, sres_len); 9119 int kc_offset = 1+sres_len; 9120 int kc_len = result[kc_offset]; 9121 String kc = makeHex(result, 1+kc_offset, kc_len); 9122 sb.append(":" + kc + ":" + sres); 9123 logv("kc:" + kc + " sres:" + sres); 9124 } else { 9125 loge("bad response - " + tmResponse); 9126 } 9127 } 9128 9129 String response = sb.toString(); 9130 logv("Supplicant Response -" + response); 9131 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9132 } else { 9133 loge("could not get telephony manager"); 9134 } 9135 } 9136 9137 void handle3GAuthRequest(SimAuthRequestData requestData) { 9138 StringBuilder sb = new StringBuilder(); 9139 byte[] rand = null; 9140 byte[] authn = null; 9141 String res_type = "UMTS-AUTH"; 9142 9143 if (targetWificonfiguration == null 9144 || targetWificonfiguration.networkId == requestData.networkId) { 9145 logd("id matches targetWifiConfiguration"); 9146 } else { 9147 logd("id does not match targetWifiConfiguration"); 9148 return; 9149 } 9150 if (requestData.data.length == 2) { 9151 try { 9152 rand = parseHex(requestData.data[0]); 9153 authn = parseHex(requestData.data[1]); 9154 } catch (NumberFormatException e) { 9155 loge("malformed challenge"); 9156 } 9157 } else { 9158 loge("malformed challenge"); 9159 } 9160 9161 String tmResponse = ""; 9162 if (rand != null && authn != null) { 9163 String base64Challenge = android.util.Base64.encodeToString( 9164 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9165 9166 TelephonyManager tm = (TelephonyManager) 9167 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9168 if (tm != null) { 9169 int appType = 2; // 2 => USIM 9170 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9171 logv("Raw Response - " + tmResponse); 9172 } else { 9173 loge("could not get telephony manager"); 9174 } 9175 } 9176 9177 if (tmResponse != null && tmResponse.length() > 4) { 9178 byte[] result = android.util.Base64.decode(tmResponse, 9179 android.util.Base64.DEFAULT); 9180 loge("Hex Response - " + makeHex(result)); 9181 byte tag = result[0]; 9182 if (tag == (byte) 0xdb) { 9183 logv("successful 3G authentication "); 9184 int res_len = result[1]; 9185 String res = makeHex(result, 2, res_len); 9186 int ck_len = result[res_len + 2]; 9187 String ck = makeHex(result, res_len + 3, ck_len); 9188 int ik_len = result[res_len + ck_len + 3]; 9189 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9190 sb.append(":" + ik + ":" + ck + ":" + res); 9191 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9192 } else if (tag == (byte) 0xdc) { 9193 loge("synchronisation failure"); 9194 int auts_len = result[1]; 9195 String auts = makeHex(result, 2, auts_len); 9196 res_type = "UMTS-AUTS"; 9197 sb.append(":" + auts); 9198 logv("auts:" + auts); 9199 } else { 9200 loge("bad response - unknown tag = " + tag); 9201 return; 9202 } 9203 } else { 9204 loge("bad response - " + tmResponse); 9205 return; 9206 } 9207 9208 String response = sb.toString(); 9209 logv("Supplicant Response -" + response); 9210 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9211 } 9212} 9213