WifiStateMachine.java revision f10f5212bf1b6d35f36509e4c72f8bdd21c5e3bb
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.dhcp.DhcpClient; 54import android.net.InterfaceConfiguration; 55import android.net.LinkAddress; 56import android.net.LinkProperties; 57import android.net.NetworkAgent; 58import android.net.NetworkCapabilities; 59import android.net.NetworkFactory; 60import android.net.NetworkInfo; 61import android.net.NetworkInfo.DetailedState; 62import android.net.NetworkRequest; 63import android.net.NetworkUtils; 64import android.net.RouteInfo; 65import android.net.StaticIpConfiguration; 66import android.net.TrafficStats; 67import android.net.wifi.BatchedScanResult; 68import android.net.wifi.BatchedScanSettings; 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.WifiSsid; 81import android.net.wifi.WpsInfo; 82import android.net.wifi.WpsResult; 83import android.net.wifi.WpsResult.Status; 84import android.net.wifi.p2p.IWifiP2pManager; 85import android.net.wifi.passpoint.IWifiPasspointManager; 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.p2p.WifiP2pServiceImpl; 118 119import java.io.BufferedReader; 120import java.io.FileDescriptor; 121import java.io.FileNotFoundException; 122import java.io.FileReader; 123import java.io.IOException; 124import java.io.PrintWriter; 125import java.net.Inet4Address; 126import java.net.InetAddress; 127import java.net.SocketException; 128import java.nio.BufferUnderflowException; 129import java.util.ArrayList; 130import java.util.Calendar; 131import java.util.HashSet; 132import java.util.LinkedList; 133import java.util.List; 134import java.util.Locale; 135import java.util.Queue; 136import java.util.Random; 137import java.util.concurrent.atomic.AtomicBoolean; 138import java.util.concurrent.atomic.AtomicInteger; 139import java.util.regex.Matcher; 140import java.util.regex.Pattern; 141 142/** 143 * Track the state of Wifi connectivity. All event handling is done here, 144 * and all changes in connectivity state are initiated here. 145 * 146 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 147 * In the current implementation, we support concurrent wifi p2p and wifi operation. 148 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 149 * handles p2p operation. 150 * 151 * @hide 152 */ 153public class WifiStateMachine extends StateMachine { 154 155 private static final String NETWORKTYPE = "WIFI"; 156 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 157 private static boolean DBG = false; 158 private static boolean VDBG = false; 159 private static boolean VVDBG = false; 160 private static boolean mLogMessages = false; 161 private static final String TAG = "WifiStateMachine"; 162 163 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 164 165 private static final String GOOGLE_OUI = "DA-A1-19"; 166 167 /* temporary debug flag - best network selection development */ 168 private static boolean PDBG = false; 169 170 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 171 * the corresponding BSSID. 172 */ 173 private boolean didBlackListBSSID = false; 174 175 /** 176 * Log with error attribute 177 * 178 * @param s is string log 179 */ 180 protected void loge(String s) { 181 Log.e(getName(), s); 182 } 183 protected void logd(String s) { 184 Log.d(getName(), s); 185 } 186 protected void log(String s) {; 187 Log.e(getName(), s); 188 } 189 190 private WifiMonitor mWifiMonitor; 191 private WifiNative mWifiNative; 192 private WifiConfigStore mWifiConfigStore; 193 private WifiAutoJoinController mWifiAutoJoinController; 194 private INetworkManagementService mNwService; 195 private ConnectivityManager mCm; 196 private WifiLogger mWifiLogger; 197 198 private final boolean mP2pSupported; 199 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 200 private boolean mTemporarilyDisconnectWifi = false; 201 private final String mPrimaryDeviceType; 202 203 /* Scan results handling */ 204 private List<ScanDetail> mScanResults = new ArrayList<>(); 205 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 206 private static final int SCAN_RESULT_CACHE_SIZE = 160; 207 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 208 // For debug, number of known scan results that were found as part of last scan result event, 209 // as well the number of scans results returned by the supplicant with that message 210 private int mNumScanResultsKnown; 211 private int mNumScanResultsReturned; 212 213 /* Batch scan results */ 214 private final List<BatchedScanResult> mBatchedScanResults = 215 new ArrayList<BatchedScanResult>(); 216 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 217 private int mExpectedBatchedScans = 0; 218 private long mBatchedScanMinPollTime = 0; 219 220 private boolean mScreenOn = false; 221 222 /* Chipset supports background scan */ 223 private final boolean mBackgroundScanSupported; 224 225 private String mInterfaceName; 226 /* Tethering interface could be separate from wlan interface */ 227 private String mTetherInterfaceName; 228 229 private int mLastSignalLevel = -1; 230 private String mLastBssid; 231 private int mLastNetworkId; // The network Id we successfully joined 232 private boolean linkDebouncing = false; 233 234 // Testing various network disconnect cases by sending lots of spurious 235 // disconnect to supplicant 236 private boolean testNetworkDisconnect = false; 237 238 private boolean mEnableRssiPolling = false; 239 private boolean mEnableBackgroundScan = false; 240 private int mRssiPollToken = 0; 241 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 242 * In CONNECT_MODE, the STA can scan and connect to an access point 243 * In SCAN_ONLY_MODE, the STA can only scan for access points 244 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 245 */ 246 private int mOperationalMode = CONNECT_MODE; 247 private boolean mIsScanOngoing = false; 248 private boolean mIsFullScanOngoing = false; 249 private boolean mSendScanResultsBroadcast = false; 250 251 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 252 private WorkSource mScanWorkSource = null; 253 private static final int UNKNOWN_SCAN_SOURCE = -1; 254 private static final int SCAN_ALARM_SOURCE = -2; 255 private static final int ADD_OR_UPDATE_SOURCE = -3; 256 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 257 private static final int ENABLE_WIFI = -5; 258 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 259 260 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 261 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 262 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 263 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 264 265 private static final String BATCHED_SETTING = "batched_settings"; 266 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 267 268 /* Tracks if state machine has received any screen state change broadcast yet. 269 * We can miss one of these at boot. 270 */ 271 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 272 273 private boolean mBluetoothConnectionActive = false; 274 275 private PowerManager.WakeLock mSuspendWakeLock; 276 277 /** 278 * Interval in milliseconds between polling for RSSI 279 * and linkspeed information 280 */ 281 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 282 283 /** 284 * Interval in milliseconds between receiving a disconnect event 285 * while connected to a good AP, and handling the disconnect proper 286 */ 287 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 288 289 /** 290 * Delay between supplicant restarts upon failure to establish connection 291 */ 292 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 293 294 /** 295 * Number of times we attempt to restart supplicant 296 */ 297 private static final int SUPPLICANT_RESTART_TRIES = 5; 298 299 private int mSupplicantRestartCount = 0; 300 /* Tracks sequence number on stop failure message */ 301 private int mSupplicantStopFailureToken = 0; 302 303 /** 304 * Tether state change notification time out 305 */ 306 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 307 308 /* Tracks sequence number on a tether notification time out */ 309 private int mTetherToken = 0; 310 311 /** 312 * Driver start time out. 313 */ 314 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 315 316 /* Tracks sequence number on a driver time out */ 317 private int mDriverStartToken = 0; 318 319 /** 320 * The link properties of the wifi interface. 321 * Do not modify this directly; use updateLinkProperties instead. 322 */ 323 private LinkProperties mLinkProperties; 324 325 /* Tracks sequence number on a periodic scan message */ 326 private int mPeriodicScanToken = 0; 327 328 // Wakelock held during wifi start/stop and driver load/unload 329 private PowerManager.WakeLock mWakeLock; 330 331 private Context mContext; 332 333 private final Object mDhcpResultsLock = new Object(); 334 private DhcpResults mDhcpResults; 335 private WifiInfo mWifiInfo; 336 private NetworkInfo mNetworkInfo; 337 private NetworkCapabilities mNetworkCapabilities; 338 private SupplicantStateTracker mSupplicantStateTracker; 339 private BaseDhcpStateMachine mDhcpStateMachine; 340 private boolean mDhcpActive = false; 341 342 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 343 344 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 345 346 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 347 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 348 349 // Roaming failure count 350 private int mRoamFailCount = 0; 351 352 // This is the BSSID we are trying to associate to, it can be set to "any" 353 // if we havent selected a BSSID for joining. 354 // if we havent selected a BSSID for joining. 355 // The BSSID we are associated to is found in mWifiInfo 356 private String mTargetRoamBSSID = "any"; 357 358 private long mLastDriverRoamAttempt = 0; 359 360 private WifiConfiguration targetWificonfiguration = null; 361 362 // Used as debug to indicate which configuration last was saved 363 private WifiConfiguration lastSavedConfigurationAttempt = null; 364 365 // Used as debug to indicate which configuration last was removed 366 private WifiConfiguration lastForgetConfigurationAttempt = null; 367 368 //Random used by softAP channel Selection 369 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 370 boolean isRoaming() { 371 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 372 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 373 } 374 375 public void autoRoamSetBSSID(int netId, String bssid) { 376 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 377 } 378 379 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 380 boolean ret = true; 381 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 382 if (bssid == null) bssid = "any"; 383 if (config == null) return false; // Nothing to do 384 385 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 386 return false; // We didnt change anything 387 } 388 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 389 // Changing to ANY 390 if (!mWifiConfigStore.roamOnAny) { 391 ret = false; // Nothing to do 392 } 393 } 394 if (VDBG) { 395 loge("autoRoamSetBSSID " + bssid 396 + " key=" + config.configKey()); 397 } 398 config.autoJoinBSSID = bssid; 399 mTargetRoamBSSID = bssid; 400 mWifiConfigStore.saveWifiConfigBSSID(config); 401 return ret; 402 } 403 404 /** 405 * Save the UID correctly depending on if this is a new or existing network. 406 * @return true if operation is authorized, false otherwise 407 */ 408 boolean recordUidIfAuthorized(WifiConfiguration config, int uid) { 409 if (!mWifiConfigStore.isNetworkConfigured(config)) { 410 config.creatorUid = uid; 411 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 412 } else if (!mWifiConfigStore.canModifyNetwork(uid, config)) { 413 return false; 414 } 415 416 config.lastUpdateUid = uid; 417 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 418 419 return true; 420 421 } 422 423 /** 424 * Checks to see if user has specified if the apps configuration is connectable. 425 * If the user hasn't specified we query the user and return true. 426 * 427 * @param message The message to be deffered 428 * @param netId Network id of the configuration to check against 429 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 430 * CONFIG_OVERRIDE_PERMISSION 431 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 432 */ 433 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 434 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 435 436 // We can only evaluate saved configurations. 437 if (config == null) { 438 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 439 return true; 440 } 441 442 switch (config.userApproved) { 443 case WifiConfiguration.USER_APPROVED: 444 case WifiConfiguration.USER_BANNED: 445 return false; 446 case WifiConfiguration.USER_PENDING: 447 default: // USER_UNSPECIFIED 448 /* the intention was to ask user here; but a dialog box is * 449 * too invasive; so we are going to allow connection for now */ 450 config.userApproved = WifiConfiguration.USER_APPROVED; 451 return false; 452 } 453 } 454 455 /** 456 * Subset of link properties coming from netlink. 457 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 458 * and domains obtained from router advertisements (RFC 6106). 459 */ 460 private NetlinkTracker mNetlinkTracker; 461 462 private AlarmManager mAlarmManager; 463 private PendingIntent mScanIntent; 464 private PendingIntent mDriverStopIntent; 465 private PendingIntent mBatchedScanIntervalIntent; 466 467 /* Tracks current frequency mode */ 468 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 469 470 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 471 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 472 473 // Channel for sending replies. 474 private AsyncChannel mReplyChannel = new AsyncChannel(); 475 476 private WifiP2pServiceImpl mWifiP2pServiceImpl; 477 478 // Used to initiate a connection with WifiP2pService 479 private AsyncChannel mWifiP2pChannel; 480 private AsyncChannel mWifiApConfigChannel; 481 482 private int mConnectionRequests = 0; 483 private WifiNetworkFactory mNetworkFactory; 484 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 485 private WifiNetworkAgent mNetworkAgent; 486 487 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 488 // We should really persist that into the networkHistory.txt file, and read it back when 489 // WifiStateMachine starts up 490 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 491 492 // Used to filter out requests we couldn't possibly satisfy. 493 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 494 495 /* The base for wifi message types */ 496 static final int BASE = Protocol.BASE_WIFI; 497 /* Start the supplicant */ 498 static final int CMD_START_SUPPLICANT = BASE + 11; 499 /* Stop the supplicant */ 500 static final int CMD_STOP_SUPPLICANT = BASE + 12; 501 /* Start the driver */ 502 static final int CMD_START_DRIVER = BASE + 13; 503 /* Stop the driver */ 504 static final int CMD_STOP_DRIVER = BASE + 14; 505 /* Indicates Static IP succeeded */ 506 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 507 /* Indicates Static IP failed */ 508 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 509 /* Indicates supplicant stop failed */ 510 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 511 /* Delayed stop to avoid shutting down driver too quick*/ 512 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 513 /* A delayed message sent to start driver when it fail to come up */ 514 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 515 516 /* Start the soft access point */ 517 static final int CMD_START_AP = BASE + 21; 518 /* Indicates soft ap start succeeded */ 519 static final int CMD_START_AP_SUCCESS = BASE + 22; 520 /* Indicates soft ap start failed */ 521 static final int CMD_START_AP_FAILURE = BASE + 23; 522 /* Stop the soft access point */ 523 static final int CMD_STOP_AP = BASE + 24; 524 /* Set the soft access point configuration */ 525 static final int CMD_SET_AP_CONFIG = BASE + 25; 526 /* Soft access point configuration set completed */ 527 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 528 /* Request the soft access point configuration */ 529 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 530 /* Response to access point configuration request */ 531 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 532 /* Invoked when getting a tether state change notification */ 533 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 534 /* A delayed message sent to indicate tether state change failed to arrive */ 535 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 536 537 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 538 539 /* Supplicant commands */ 540 /* Is supplicant alive ? */ 541 static final int CMD_PING_SUPPLICANT = BASE + 51; 542 /* Add/update a network configuration */ 543 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 544 /* Delete a network */ 545 static final int CMD_REMOVE_NETWORK = BASE + 53; 546 /* Enable a network. The device will attempt a connection to the given network. */ 547 static final int CMD_ENABLE_NETWORK = BASE + 54; 548 /* Enable all networks */ 549 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 550 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 551 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 552 /* Clear the blacklist network list */ 553 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 554 /* Save configuration */ 555 static final int CMD_SAVE_CONFIG = BASE + 58; 556 /* Get configured networks */ 557 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 558 /* Get available frequencies */ 559 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 560 /* Get adaptors */ 561 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 562 /* Get configured networks with real preSharedKey */ 563 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 564 /* Get Link Layer Stats thru HAL */ 565 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 566 /* Supplicant commands after driver start*/ 567 /* Initiate a scan */ 568 static final int CMD_START_SCAN = BASE + 71; 569 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 570 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 571 /* Disconnect from a network */ 572 static final int CMD_DISCONNECT = BASE + 73; 573 /* Reconnect to a network */ 574 static final int CMD_RECONNECT = BASE + 74; 575 /* Reassociate to a network */ 576 static final int CMD_REASSOCIATE = BASE + 75; 577 /* Get Connection Statistis */ 578 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 579 580 /* Controls suspend mode optimizations 581 * 582 * When high perf mode is enabled, suspend mode optimizations are disabled 583 * 584 * When high perf mode is disabled, suspend mode optimizations are enabled 585 * 586 * Suspend mode optimizations include: 587 * - packet filtering 588 * - turn off roaming 589 * - DTIM wake up settings 590 */ 591 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 592 /* Set the country code */ 593 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 594 /* Enables RSSI poll */ 595 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 596 /* RSSI poll */ 597 static final int CMD_RSSI_POLL = BASE + 83; 598 /* Set up packet filtering */ 599 static final int CMD_START_PACKET_FILTERING = BASE + 84; 600 /* Clear packet filter */ 601 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 602 /* Enable suspend mode optimizations in the driver */ 603 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 604 /* Delayed NETWORK_DISCONNECT */ 605 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 606 /* When there are no saved networks, we do a periodic scan to notify user of 607 * an open network */ 608 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 609 /* Test network Disconnection NETWORK_DISCONNECT */ 610 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 611 private int testNetworkDisconnectCounter = 0; 612 613 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 614 static final int MULTICAST_V6 = 1; 615 static final int MULTICAST_V4 = 0; 616 617 /* Set the frequency band */ 618 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 619 /* Enable TDLS on a specific MAC address */ 620 static final int CMD_ENABLE_TDLS = BASE + 92; 621 /* DHCP/IP configuration watchdog */ 622 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 623 /* Remove a packages associated configrations */ 624 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 625 /* Remove a packages associated configrations */ 626 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 149; 627 628 /** 629 * Make this timer 40 seconds, which is about the normal DHCP timeout. 630 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 631 * for more than 30 seconds. 632 */ 633 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 634 635 int obtainingIpWatchdogCount = 0; 636 637 /* Commands from/to the SupplicantStateTracker */ 638 /* Reset the supplicant state tracker */ 639 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 640 641 642 /** 643 * Watchdog for protecting against b/16823537 644 * Leave time for 4-ways handshake to succeed 645 */ 646 static final int ROAM_GUARD_TIMER_MSEC = 15000; 647 648 int roamWatchdogCount = 0; 649 /* Roam state watchdog */ 650 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 651 /* Screen change intent handling */ 652 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 653 654 int disconnectingWatchdogCount = 0; 655 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 656 657 /* Disconnecting state watchdog */ 658 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 659 660 /* Disable an ephemeral network */ 661 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 662 663 /* P2p commands */ 664 /* We are ok with no response here since we wont do much with it anyway */ 665 public static final int CMD_ENABLE_P2P = BASE + 131; 666 /* In order to shut down supplicant cleanly, we wait till p2p has 667 * been disabled */ 668 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 669 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 670 671 public static final int CMD_BOOT_COMPLETED = BASE + 134; 672 673 /* change the batch scan settings. 674 * arg1 = responsible UID 675 * arg2 = csph (channel scans per hour) 676 * obj = bundle with the new settings and the optional worksource 677 */ 678 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 679 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 680 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 681 682 /* We now have a valid IP configuration. */ 683 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 684 /* We no longer have a valid IP configuration. */ 685 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 686 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 687 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 688 689 /* Supplicant is trying to associate to a given BSSID */ 690 static final int CMD_TARGET_BSSID = BASE + 141; 691 692 /* Reload all networks and reconnect */ 693 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 694 695 static final int CMD_AUTO_CONNECT = BASE + 143; 696 697 static final int network_status_unwanted_disconnect = 0; 698 static final int network_status_unwanted_disable_autojoin = 1; 699 700 static final int CMD_UNWANTED_NETWORK = BASE + 144; 701 702 static final int CMD_AUTO_ROAM = BASE + 145; 703 704 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 705 706 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 707 708 static final int CMD_NETWORK_STATUS = BASE + 148; 709 710 /* Wifi state machine modes of operation */ 711 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 712 public static final int CONNECT_MODE = 1; 713 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 714 public static final int SCAN_ONLY_MODE = 2; 715 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 716 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 717 718 private static final int SUCCESS = 1; 719 private static final int FAILURE = -1; 720 721 /* Tracks if suspend optimizations need to be disabled by DHCP, 722 * screen or due to high perf mode. 723 * When any of them needs to disable it, we keep the suspend optimizations 724 * disabled 725 */ 726 private int mSuspendOptNeedsDisabled = 0; 727 728 private static final int SUSPEND_DUE_TO_DHCP = 1; 729 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 730 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 731 732 /* Tracks if user has enabled suspend optimizations through settings */ 733 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 734 735 /** 736 * Default framework scan interval in milliseconds. This is used in the scenario in which 737 * wifi chipset does not support background scanning to set up a 738 * periodic wake up scan so that the device can connect to a new access 739 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 740 * override this. 741 */ 742 private final int mDefaultFrameworkScanIntervalMs; 743 744 private int mDisconnectedScanPeriodMs = 10000; 745 746 /** 747 * Supplicant scan interval in milliseconds. 748 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 749 * from the default config if the setting is not set 750 */ 751 private long mSupplicantScanIntervalMs; 752 753 /** 754 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 755 */ 756 private long lastFullBandConnectedTimeMilli; 757 758 /** 759 * time interval to the next full band scan we will perform for 760 * autojoin while connected with screen lit 761 */ 762 private long fullBandConnectedTimeIntervalMilli; 763 764 /** 765 * max time interval to the next full band scan we will perform for 766 * autojoin while connected with screen lit 767 * Max time is 5 minutes 768 */ 769 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 770 771 /** 772 * Minimum time interval between enabling all networks. 773 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 774 * due to enabling every time. We add a threshold to avoid this. 775 */ 776 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 777 private long mLastEnableAllNetworksTime; 778 779 int mRunningBeaconCount = 0; 780 781 /** 782 * Starting and shutting down driver too quick causes problems leading to driver 783 * being in a bad state. Delay driver stop. 784 */ 785 private final int mDriverStopDelayMs; 786 private int mDelayedStopCounter; 787 private boolean mInDelayedStop = false; 788 789 // there is a delay between StateMachine change country code and Supplicant change country code 790 // here save the current WifiStateMachine set country code 791 private volatile String mSetCountryCode = null; 792 793 // Supplicant doesn't like setting the same country code multiple times (it may drop 794 // currently connected network), so we save the current device set country code here to avoid 795 // redundency 796 private String mDriverSetCountryCode = null; 797 798 /* Default parent state */ 799 private State mDefaultState = new DefaultState(); 800 /* Temporary initial state */ 801 private State mInitialState = new InitialState(); 802 /* Driver loaded, waiting for supplicant to start */ 803 private State mSupplicantStartingState = new SupplicantStartingState(); 804 /* Driver loaded and supplicant ready */ 805 private State mSupplicantStartedState = new SupplicantStartedState(); 806 /* Waiting for supplicant to stop and monitor to exit */ 807 private State mSupplicantStoppingState = new SupplicantStoppingState(); 808 /* Driver start issued, waiting for completed event */ 809 private State mDriverStartingState = new DriverStartingState(); 810 /* Driver started */ 811 private State mDriverStartedState = new DriverStartedState(); 812 /* Wait until p2p is disabled 813 * This is a special state which is entered right after we exit out of DriverStartedState 814 * before transitioning to another state. 815 */ 816 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 817 /* Driver stopping */ 818 private State mDriverStoppingState = new DriverStoppingState(); 819 /* Driver stopped */ 820 private State mDriverStoppedState = new DriverStoppedState(); 821 /* Scan for networks, no connection will be established */ 822 private State mScanModeState = new ScanModeState(); 823 /* Connecting to an access point */ 824 private State mConnectModeState = new ConnectModeState(); 825 /* Connected at 802.11 (L2) level */ 826 private State mL2ConnectedState = new L2ConnectedState(); 827 /* fetching IP after connection to access point (assoc+auth complete) */ 828 private State mObtainingIpState = new ObtainingIpState(); 829 /* Waiting for link quality verification to be complete */ 830 private State mVerifyingLinkState = new VerifyingLinkState(); 831 /* Connected with IP addr */ 832 private State mConnectedState = new ConnectedState(); 833 /* Roaming */ 834 private State mRoamingState = new RoamingState(); 835 /* disconnect issued, waiting for network disconnect confirmation */ 836 private State mDisconnectingState = new DisconnectingState(); 837 /* Network is not connected, supplicant assoc+auth is not complete */ 838 private State mDisconnectedState = new DisconnectedState(); 839 /* Waiting for WPS to be completed*/ 840 private State mWpsRunningState = new WpsRunningState(); 841 842 /* Soft ap is starting up */ 843 private State mSoftApStartingState = new SoftApStartingState(); 844 /* Soft ap is running */ 845 private State mSoftApStartedState = new SoftApStartedState(); 846 /* Soft ap is running and we are waiting for tether notification */ 847 private State mTetheringState = new TetheringState(); 848 /* Soft ap is running and we are tethered through connectivity service */ 849 private State mTetheredState = new TetheredState(); 850 /* Waiting for untether confirmation before stopping soft Ap */ 851 private State mUntetheringState = new UntetheringState(); 852 853 private class TetherStateChange { 854 ArrayList<String> available; 855 ArrayList<String> active; 856 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 857 available = av; 858 active = ac; 859 } 860 } 861 862 public static class SimAuthRequestData { 863 int networkId; 864 int protocol; 865 String ssid; 866 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 867 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 868 String[] data; 869 } 870 871 /** 872 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 873 * {@link WifiManager#WIFI_STATE_DISABLING}, 874 * {@link WifiManager#WIFI_STATE_ENABLED}, 875 * {@link WifiManager#WIFI_STATE_ENABLING}, 876 * {@link WifiManager#WIFI_STATE_UNKNOWN} 877 * 878 */ 879 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 880 881 /** 882 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 883 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 884 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 885 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 886 * {@link WifiManager#WIFI_AP_STATE_FAILED} 887 * 888 */ 889 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 890 891 private static final int SCAN_REQUEST = 0; 892 private static final String ACTION_START_SCAN = 893 "com.android.server.WifiManager.action.START_SCAN"; 894 895 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 896 private static final int DRIVER_STOP_REQUEST = 0; 897 private static final String ACTION_DELAYED_DRIVER_STOP = 898 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 899 900 private static final String ACTION_REFRESH_BATCHED_SCAN = 901 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 902 /** 903 * Keep track of whether WIFI is running. 904 */ 905 private boolean mIsRunning = false; 906 907 /** 908 * Keep track of whether we last told the battery stats we had started. 909 */ 910 private boolean mReportedRunning = false; 911 912 /** 913 * Most recently set source of starting WIFI. 914 */ 915 private final WorkSource mRunningWifiUids = new WorkSource(); 916 917 /** 918 * The last reported UIDs that were responsible for starting WIFI. 919 */ 920 private final WorkSource mLastRunningWifiUids = new WorkSource(); 921 922 private final IBatteryStats mBatteryStats; 923 924 private BatchedScanSettings mBatchedScanSettings = null; 925 926 /** 927 * Track the worksource/cost of the current settings and track what's been noted 928 * to the battery stats, so we can mark the end of the previous when changing. 929 */ 930 private WorkSource mBatchedScanWorkSource = null; 931 private int mBatchedScanCsph = 0; 932 private WorkSource mNotedBatchedScanWorkSource = null; 933 private int mNotedBatchedScanCsph = 0; 934 935 private String mTcpBufferSizes = null; 936 937 // Used for debug and stats gathering 938 private static int sScanAlarmIntentCount = 0; 939 940 final static int frameworkMinScanIntervalSaneValue = 10000; 941 942 public WifiStateMachine(Context context, String wlanInterface, 943 WifiTrafficPoller trafficPoller){ 944 super("WifiStateMachine"); 945 mContext = context; 946 mSetCountryCode = Settings.Global.getString( 947 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 948 mInterfaceName = wlanInterface; 949 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 950 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 951 BatteryStats.SERVICE_NAME)); 952 953 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 954 mNwService = INetworkManagementService.Stub.asInterface(b); 955 956 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 957 PackageManager.FEATURE_WIFI_DIRECT); 958 959 mWifiNative = new WifiNative(mInterfaceName); 960 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 961 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 962 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 963 mWifiLogger = new WifiLogger(mContext, this); 964 mWifiMonitor = new WifiMonitor(this, mWifiNative); 965 mWifiInfo = new WifiInfo(); 966 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 967 getHandler()); 968 mLinkProperties = new LinkProperties(); 969 970 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 971 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 972 973 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 974 975 mNetworkInfo.setIsAvailable(false); 976 mLastBssid = null; 977 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 978 mLastSignalLevel = -1; 979 980 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 981 public void update() { 982 sendMessage(CMD_UPDATE_LINKPROPERTIES); 983 } 984 }); 985 try { 986 mNwService.registerObserver(mNetlinkTracker); 987 } catch (RemoteException e) { 988 loge("Couldn't register netlink tracker: " + e.toString()); 989 } 990 991 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 992 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 993 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 994 995 // Make sure the interval is not configured less than 10 seconds 996 int period = mContext.getResources().getInteger( 997 R.integer.config_wifi_framework_scan_interval); 998 if (period < frameworkMinScanIntervalSaneValue) { 999 period = frameworkMinScanIntervalSaneValue; 1000 } 1001 mDefaultFrameworkScanIntervalMs = period; 1002 mDriverStopDelayMs = mContext.getResources().getInteger( 1003 R.integer.config_wifi_driver_stop_delay); 1004 1005 mBackgroundScanSupported = mContext.getResources().getBoolean( 1006 R.bool.config_wifi_background_scan_support); 1007 1008 mPrimaryDeviceType = mContext.getResources().getString( 1009 R.string.config_wifi_p2p_device_type); 1010 1011 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1012 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1013 1014 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1015 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1016 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1017 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1018 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1019 // TODO - needs to be a bit more dynamic 1020 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1021 1022 mContext.registerReceiver( 1023 new BroadcastReceiver() { 1024 @Override 1025 public void onReceive(Context context, Intent intent) { 1026 ArrayList<String> available = intent.getStringArrayListExtra( 1027 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1028 ArrayList<String> active = intent.getStringArrayListExtra( 1029 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1030 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1031 } 1032 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1033 1034 mContext.registerReceiver( 1035 new BroadcastReceiver() { 1036 @Override 1037 public void onReceive(Context context, Intent intent) { 1038 sScanAlarmIntentCount++; // Used for debug only 1039 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1040 if (VDBG) 1041 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1042 } 1043 }, 1044 new IntentFilter(ACTION_START_SCAN)); 1045 1046 IntentFilter filter = new IntentFilter(); 1047 filter.addAction(Intent.ACTION_SCREEN_ON); 1048 filter.addAction(Intent.ACTION_SCREEN_OFF); 1049 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 1050 mContext.registerReceiver( 1051 new BroadcastReceiver() { 1052 @Override 1053 public void onReceive(Context context, Intent intent) { 1054 String action = intent.getAction(); 1055 1056 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1057 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1058 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1059 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1060 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 1061 startNextBatchedScanAsync(); 1062 } 1063 } 1064 }, filter); 1065 1066 mContext.registerReceiver( 1067 new BroadcastReceiver() { 1068 @Override 1069 public void onReceive(Context context, Intent intent) { 1070 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1071 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1072 } 1073 }, 1074 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1075 1076 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1077 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1078 new ContentObserver(getHandler()) { 1079 @Override 1080 public void onChange(boolean selfChange) { 1081 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1082 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1083 } 1084 }); 1085 1086 mContext.registerReceiver( 1087 new BroadcastReceiver() { 1088 @Override 1089 public void onReceive(Context context, Intent intent) { 1090 sendMessage(CMD_BOOT_COMPLETED); 1091 } 1092 }, 1093 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1094 1095 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1096 1097 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1098 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1099 1100 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1101 mSuspendWakeLock.setReferenceCounted(false); 1102 1103 mTcpBufferSizes = mContext.getResources().getString( 1104 com.android.internal.R.string.config_wifi_tcp_buffers); 1105 1106 addState(mDefaultState); 1107 addState(mInitialState, mDefaultState); 1108 addState(mSupplicantStartingState, mDefaultState); 1109 addState(mSupplicantStartedState, mDefaultState); 1110 addState(mDriverStartingState, mSupplicantStartedState); 1111 addState(mDriverStartedState, mSupplicantStartedState); 1112 addState(mScanModeState, mDriverStartedState); 1113 addState(mConnectModeState, mDriverStartedState); 1114 addState(mL2ConnectedState, mConnectModeState); 1115 addState(mObtainingIpState, mL2ConnectedState); 1116 addState(mVerifyingLinkState, mL2ConnectedState); 1117 addState(mConnectedState, mL2ConnectedState); 1118 addState(mRoamingState, mL2ConnectedState); 1119 addState(mDisconnectingState, mConnectModeState); 1120 addState(mDisconnectedState, mConnectModeState); 1121 addState(mWpsRunningState, mConnectModeState); 1122 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1123 addState(mDriverStoppingState, mSupplicantStartedState); 1124 addState(mDriverStoppedState, mSupplicantStartedState); 1125 addState(mSupplicantStoppingState, mDefaultState); 1126 addState(mSoftApStartingState, mDefaultState); 1127 addState(mSoftApStartedState, mDefaultState); 1128 addState(mTetheringState, mSoftApStartedState); 1129 addState(mTetheredState, mSoftApStartedState); 1130 addState(mUntetheringState, mSoftApStartedState); 1131 1132 setInitialState(mInitialState); 1133 1134 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1135 setLogOnlyTransitions(false); 1136 if (VDBG) setDbg(true); 1137 1138 //start the state machine 1139 start(); 1140 1141 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1142 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1143 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1144 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1145 } 1146 1147 1148 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1149 Intent intent = new Intent(action, null); 1150 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1151 intent.setPackage(this.getClass().getPackage().getName()); 1152 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1153 } 1154 1155 private int mVerboseLoggingLevel = 0; 1156 1157 int getVerboseLoggingLevel() { 1158 return mVerboseLoggingLevel; 1159 } 1160 1161 void enableVerboseLogging(int verbose) { 1162 mVerboseLoggingLevel = verbose; 1163 if (verbose > 0) { 1164 DBG = true; 1165 VDBG = true; 1166 PDBG = true; 1167 mLogMessages = true; 1168 mWifiNative.setSupplicantLogLevel("DEBUG"); 1169 } else { 1170 DBG = false; 1171 VDBG = false; 1172 PDBG = false; 1173 mLogMessages = false; 1174 mWifiNative.setSupplicantLogLevel("INFO"); 1175 } 1176 mWifiAutoJoinController.enableVerboseLogging(verbose); 1177 mWifiMonitor.enableVerboseLogging(verbose); 1178 mWifiNative.enableVerboseLogging(verbose); 1179 mWifiConfigStore.enableVerboseLogging(verbose); 1180 mSupplicantStateTracker.enableVerboseLogging(verbose); 1181 } 1182 1183 private int mAggressiveHandover = 0; 1184 1185 int getAggressiveHandover() { 1186 return mAggressiveHandover; 1187 } 1188 1189 void enableAggressiveHandover(int enabled) { 1190 mAggressiveHandover = enabled; 1191 } 1192 1193 public void setAllowScansWithTraffic(int enabled) { 1194 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1195 } 1196 1197 public int getAllowScansWithTraffic() { 1198 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1199 } 1200 1201 public void setAllowScansWhileAssociated(boolean enabled) { 1202 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled); 1203 } 1204 1205 public boolean getAllowScansWhileAssociated() { 1206 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 1207 } 1208 1209 /* 1210 * 1211 * Framework scan control 1212 */ 1213 1214 private boolean mAlarmEnabled = false; 1215 /* This is set from the overlay config file or from a secure setting. 1216 * A value of 0 disables scanning in the framework. 1217 */ 1218 private long mFrameworkScanIntervalMs = 10000; 1219 1220 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1221 1222 private void setScanAlarm(boolean enabled) { 1223 if (PDBG) { 1224 loge("setScanAlarm " + enabled 1225 + " period " + mDefaultFrameworkScanIntervalMs 1226 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1227 } 1228 if (mBackgroundScanSupported == false) { 1229 // Scan alarm is only used for background scans if they are not 1230 // offloaded to the wifi chipset, hence enable the scan alarm 1231 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1232 enabled = true; 1233 } 1234 1235 if (enabled == mAlarmEnabled) return; 1236 if (enabled) { 1237 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1238 /* going to wake up the host processor to look for access points */ 1239 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1240 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1241 mScanIntent); 1242 mAlarmEnabled = true; 1243 } else { 1244 mAlarmManager.cancel(mScanIntent); 1245 mAlarmEnabled = false; 1246 } 1247 } 1248 1249 private void cancelDelayedScan() { 1250 mDelayedScanCounter.incrementAndGet(); 1251 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1252 } 1253 1254 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1255 ScanSettings settings, WorkSource workSource) { 1256 if (counter != mDelayedScanCounter.get()) { 1257 return false; 1258 } 1259 if (restart) 1260 startDelayedScan(milli, settings, workSource); 1261 return true; 1262 } 1263 1264 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1265 if (milli <= 0) return; 1266 /** 1267 * The cases where the scan alarm should be run are : 1268 * - DisconnectedState && screenOn => used delayed timer 1269 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1270 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1271 * - ConnectedState && screenOn => used delayed timer 1272 */ 1273 1274 mDelayedScanCounter.incrementAndGet(); 1275 if (mScreenOn && 1276 (getCurrentState() == mDisconnectedState 1277 || getCurrentState() == mConnectedState)) { 1278 Bundle bundle = new Bundle(); 1279 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1280 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1281 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1282 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1283 mDelayedScanCounter.get(), bundle, milli); 1284 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1285 } else if (mBackgroundScanSupported == false 1286 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1287 setScanAlarm(true); 1288 if (DBG) loge("startDelayedScan start scan alarm -> " 1289 + mDelayedScanCounter + " milli " + milli); 1290 } else { 1291 if (DBG) loge("startDelayedScan unhandled -> " 1292 + mDelayedScanCounter + " milli " + milli); 1293 } 1294 } 1295 1296 private boolean setRandomMacOui() { 1297 String oui = mContext.getResources().getString( 1298 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1299 String[] ouiParts = oui.split("-"); 1300 byte[] ouiBytes = new byte[3]; 1301 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1302 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1303 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1304 1305 logd("Setting OUI to " + oui); 1306 return mWifiNative.setScanningMacOui(ouiBytes); 1307 } 1308 1309 /********************************************************* 1310 * Methods exposed for public use 1311 ********************************************************/ 1312 1313 public Messenger getMessenger() { 1314 return new Messenger(getHandler()); 1315 } 1316 1317 public WifiMonitor getWifiMonitor() { 1318 return mWifiMonitor; 1319 } 1320 1321 /** 1322 * TODO: doc 1323 */ 1324 public boolean syncPingSupplicant(AsyncChannel channel) { 1325 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1326 boolean result = (resultMsg.arg1 != FAILURE); 1327 resultMsg.recycle(); 1328 return result; 1329 } 1330 1331 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1332 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1333 List<WifiChannel> list = null; 1334 if (resultMsg.obj != null) { 1335 list = new ArrayList<WifiChannel>(); 1336 String freqs = (String) resultMsg.obj; 1337 String[] lines = freqs.split("\n"); 1338 for (String line : lines) 1339 if (line.contains("MHz")) { 1340 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1341 WifiChannel c = new WifiChannel(); 1342 String[] prop = line.split(" "); 1343 if (prop.length < 5) continue; 1344 try { 1345 c.channelNum = Integer.parseInt(prop[1]); 1346 c.freqMHz = Integer.parseInt(prop[3]); 1347 } catch (NumberFormatException e) { } 1348 c.isDFS = line.contains("(DFS)"); 1349 list.add(c); 1350 } else if (line.contains("Mode[B] Channels:")) { 1351 // B channels are the same as G channels, skipped 1352 break; 1353 } 1354 } 1355 resultMsg.recycle(); 1356 return (list != null && list.size() > 0) ? list : null; 1357 } 1358 1359 /** 1360 * When settings allowing making use of untrusted networks change, trigger a scan 1361 * so as to kick of autojoin. 1362 */ 1363 public void startScanForUntrustedSettingChange() { 1364 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1365 } 1366 1367 /** 1368 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1369 * given to callingUid. 1370 * 1371 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1372 * workSource is specified. 1373 * @param workSource If not null, blame is given to workSource. 1374 * @param settings Scan settings, see {@link ScanSettings}. 1375 */ 1376 public void startScan(int callingUid, int scanCounter, 1377 ScanSettings settings, WorkSource workSource) { 1378 Bundle bundle = new Bundle(); 1379 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1380 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1381 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1382 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1383 } 1384 1385 /** 1386 * start or stop batched scanning using the given settings 1387 */ 1388 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1389 WorkSource workSource) { 1390 Bundle bundle = new Bundle(); 1391 bundle.putParcelable(BATCHED_SETTING, settings); 1392 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1393 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1394 } 1395 1396 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1397 synchronized (mBatchedScanResults) { 1398 List<BatchedScanResult> batchedScanList = 1399 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1400 for(BatchedScanResult result: mBatchedScanResults) { 1401 batchedScanList.add(new BatchedScanResult(result)); 1402 } 1403 return batchedScanList; 1404 } 1405 } 1406 1407 public void requestBatchedScanPoll() { 1408 sendMessage(CMD_POLL_BATCHED_SCAN); 1409 } 1410 1411 private void startBatchedScan() { 1412 if (mBatchedScanSettings == null) return; 1413 1414 if (mDhcpActive) { 1415 if (DBG) log("not starting Batched Scans due to DHCP"); 1416 return; 1417 } 1418 1419 // first grab any existing data 1420 retrieveBatchedScanData(); 1421 1422 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1423 1424 1425 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1426 1427 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1428 try { 1429 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1430 setNextBatchedAlarm(mExpectedBatchedScans); 1431 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1432 } catch (NumberFormatException e) { 1433 stopBatchedScan(); 1434 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1435 } 1436 } 1437 1438 // called from BroadcastListener 1439 private void startNextBatchedScanAsync() { 1440 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1441 } 1442 1443 private void startNextBatchedScan() { 1444 // first grab any existing data 1445 retrieveBatchedScanData(); 1446 1447 setNextBatchedAlarm(mExpectedBatchedScans); 1448 } 1449 1450 private void handleBatchedScanPollRequest() { 1451 if (DBG) { 1452 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1453 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1454 mBatchedScanSettings); 1455 } 1456 // if there is no appropriate PollTime that's because we either aren't 1457 // batching or we've already set a time for a poll request 1458 if (mBatchedScanMinPollTime == 0) return; 1459 if (mBatchedScanSettings == null) return; 1460 1461 long now = System.currentTimeMillis(); 1462 1463 if (now > mBatchedScanMinPollTime) { 1464 // do the poll and reset our timers 1465 startNextBatchedScan(); 1466 } else { 1467 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1468 mBatchedScanIntervalIntent); 1469 mBatchedScanMinPollTime = 0; 1470 } 1471 } 1472 1473 // return true if new/different 1474 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1475 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1476 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1477 1478 if (DBG) { 1479 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1480 ", worksource=" + responsibleWorkSource); 1481 } 1482 if (settings != null) { 1483 if (settings.equals(mBatchedScanSettings)) return false; 1484 } else { 1485 if (mBatchedScanSettings == null) return false; 1486 } 1487 mBatchedScanSettings = settings; 1488 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1489 mBatchedScanWorkSource = responsibleWorkSource; 1490 mBatchedScanCsph = csph; 1491 return true; 1492 } 1493 1494 private void stopBatchedScan() { 1495 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1496 retrieveBatchedScanData(); 1497 mWifiNative.setBatchedScanSettings(null); 1498 noteBatchedScanStop(); 1499 } 1500 1501 private void setNextBatchedAlarm(int scansExpected) { 1502 1503 if (mBatchedScanSettings == null || scansExpected < 1) return; 1504 1505 mBatchedScanMinPollTime = System.currentTimeMillis() + 1506 mBatchedScanSettings.scanIntervalSec * 1000; 1507 1508 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1509 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1510 } 1511 1512 int secToFull = mBatchedScanSettings.scanIntervalSec; 1513 secToFull *= scansExpected; 1514 1515 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1516 if (debugPeriod > 0) secToFull = debugPeriod; 1517 1518 // set the alarm to do the next poll. We set it a little short as we'd rather 1519 // wake up wearly than miss a scan due to buffer overflow 1520 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1521 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1522 mBatchedScanIntervalIntent); 1523 } 1524 1525 /** 1526 * Start reading new scan data 1527 * Data comes in as: 1528 * "scancount=5\n" 1529 * "nextcount=5\n" 1530 * "apcount=3\n" 1531 * "trunc\n" (optional) 1532 * "bssid=...\n" 1533 * "ssid=...\n" 1534 * "freq=...\n" (in Mhz) 1535 * "level=...\n" 1536 * "dist=...\n" (in cm) 1537 * "distsd=...\n" (standard deviation, in cm) 1538 * "====" 1539 * "bssid=...\n" 1540 * etc 1541 * "====" 1542 * "bssid=...\n" 1543 * etc 1544 * "%%%%" 1545 * "apcount=2\n" 1546 * "bssid=...\n" 1547 * etc 1548 * "%%%% 1549 * etc 1550 * "----" 1551 */ 1552 private final static boolean DEBUG_PARSE = false; 1553 private void retrieveBatchedScanData() { 1554 String rawData = mWifiNative.getBatchedScanResults(); 1555 if (DEBUG_PARSE) log("rawData = " + rawData); 1556 mBatchedScanMinPollTime = 0; 1557 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1558 loge("Unexpected BatchedScanResults :" + rawData); 1559 return; 1560 } 1561 1562 int scanCount = 0; 1563 final String END_OF_BATCHES = "----"; 1564 final String SCANCOUNT = "scancount="; 1565 final String TRUNCATED = "trunc"; 1566 final String AGE = "age="; 1567 final String DIST = "dist="; 1568 final String DISTSD = "distSd="; 1569 1570 String splitData[] = rawData.split("\n"); 1571 int n = 0; 1572 if (splitData[n].startsWith(SCANCOUNT)) { 1573 try { 1574 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1575 } catch (NumberFormatException e) { 1576 loge("scancount parseInt Exception from " + splitData[n]); 1577 } 1578 } else log("scancount not found"); 1579 if (scanCount == 0) { 1580 loge("scanCount==0 - aborting"); 1581 return; 1582 } 1583 1584 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1585 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1586 1587 synchronized (mBatchedScanResults) { 1588 mBatchedScanResults.clear(); 1589 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1590 1591 String bssid = null; 1592 WifiSsid wifiSsid = null; 1593 int level = 0; 1594 int freq = 0; 1595 int dist, distSd; 1596 long tsf = 0; 1597 dist = distSd = ScanResult.UNSPECIFIED; 1598 final long now = SystemClock.elapsedRealtime(); 1599 final int bssidStrLen = BSSID_STR.length(); 1600 1601 while (true) { 1602 while (n < splitData.length) { 1603 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1604 if (splitData[n].equals(END_OF_BATCHES)) { 1605 if (n+1 != splitData.length) { 1606 loge("didn't consume " + (splitData.length-n)); 1607 } 1608 if (mBatchedScanResults.size() > 0) { 1609 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1610 } 1611 logd("retrieveBatchedScanResults X"); 1612 return; 1613 } 1614 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1615 if (bssid != null) { 1616 batchedScanResult.scanResults.add(new ScanResult( 1617 wifiSsid, bssid, null, 1618 level, freq, tsf, dist, distSd)); 1619 wifiSsid = null; 1620 bssid = null; 1621 level = 0; 1622 freq = 0; 1623 tsf = 0; 1624 dist = distSd = ScanResult.UNSPECIFIED; 1625 } 1626 if (splitData[n].equals(END_STR)) { 1627 if (batchedScanResult.scanResults.size() != 0) { 1628 mBatchedScanResults.add(batchedScanResult); 1629 batchedScanResult = new BatchedScanResult(); 1630 } else { 1631 logd("Found empty batch"); 1632 } 1633 } 1634 } else if (splitData[n].equals(TRUNCATED)) { 1635 batchedScanResult.truncated = true; 1636 } else if (splitData[n].startsWith(BSSID_STR)) { 1637 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1638 splitData[n].length() - bssidStrLen); 1639 } else if (splitData[n].startsWith(FREQ_STR)) { 1640 try { 1641 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1642 } catch (NumberFormatException e) { 1643 loge("Invalid freqency: " + splitData[n]); 1644 freq = 0; 1645 } 1646 } else if (splitData[n].startsWith(AGE)) { 1647 try { 1648 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1649 tsf *= 1000; // convert mS -> uS 1650 } catch (NumberFormatException e) { 1651 loge("Invalid timestamp: " + splitData[n]); 1652 tsf = 0; 1653 } 1654 } else if (splitData[n].startsWith(SSID_STR)) { 1655 wifiSsid = WifiSsid.createFromAsciiEncoded( 1656 splitData[n].substring(SSID_STR.length())); 1657 } else if (splitData[n].startsWith(LEVEL_STR)) { 1658 try { 1659 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1660 if (level > 0) level -= 256; 1661 } catch (NumberFormatException e) { 1662 loge("Invalid level: " + splitData[n]); 1663 level = 0; 1664 } 1665 } else if (splitData[n].startsWith(DIST)) { 1666 try { 1667 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1668 } catch (NumberFormatException e) { 1669 loge("Invalid distance: " + splitData[n]); 1670 dist = ScanResult.UNSPECIFIED; 1671 } 1672 } else if (splitData[n].startsWith(DISTSD)) { 1673 try { 1674 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1675 } catch (NumberFormatException e) { 1676 loge("Invalid distanceSd: " + splitData[n]); 1677 distSd = ScanResult.UNSPECIFIED; 1678 } 1679 } else { 1680 loge("Unable to parse batched scan result line: " + splitData[n]); 1681 } 1682 n++; 1683 } 1684 rawData = mWifiNative.getBatchedScanResults(); 1685 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1686 if (rawData == null) { 1687 loge("Unexpected null BatchedScanResults"); 1688 return; 1689 } 1690 splitData = rawData.split("\n"); 1691 if (splitData.length == 0 || splitData[0].equals("ok")) { 1692 loge("batch scan results just ended!"); 1693 if (mBatchedScanResults.size() > 0) { 1694 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1695 } 1696 return; 1697 } 1698 n = 0; 1699 } 1700 } 1701 } 1702 1703 private long mDisconnectedTimeStamp = 0; 1704 1705 public long getDisconnectedTimeMilli() { 1706 if (getCurrentState() == mDisconnectedState 1707 && mDisconnectedTimeStamp != 0) { 1708 long now_ms = System.currentTimeMillis(); 1709 return now_ms - mDisconnectedTimeStamp; 1710 } 1711 return 0; 1712 } 1713 1714 // Keeping track of scan requests 1715 private long lastStartScanTimeStamp = 0; 1716 private long lastScanDuration = 0; 1717 // Last connect attempt is used to prevent scan requests: 1718 // - for a period of 10 seconds after attempting to connect 1719 private long lastConnectAttempt = 0; 1720 private String lastScanFreqs = null; 1721 1722 // For debugging, keep track of last message status handling 1723 // TODO, find an equivalent mechanism as part of parent class 1724 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1725 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1726 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1727 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1728 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1729 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1730 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1731 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1732 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1733 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1734 1735 private int messageHandlingStatus = 0; 1736 1737 //TODO: this is used only to track connection attempts, however the link state and packet per 1738 //TODO: second logic should be folded into that 1739 private boolean checkOrDeferScanAllowed(Message msg) { 1740 long now = System.currentTimeMillis(); 1741 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1742 Message dmsg = Message.obtain(msg); 1743 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1744 return false; 1745 } 1746 return true; 1747 } 1748 1749 private int mOnTime = 0; 1750 private int mTxTime = 0; 1751 private int mRxTime = 0; 1752 private int mOnTimeStartScan = 0; 1753 private int mTxTimeStartScan = 0; 1754 private int mRxTimeStartScan = 0; 1755 private int mOnTimeScan = 0; 1756 private int mTxTimeScan = 0; 1757 private int mRxTimeScan = 0; 1758 private int mOnTimeThisScan = 0; 1759 private int mTxTimeThisScan = 0; 1760 private int mRxTimeThisScan = 0; 1761 1762 private int mOnTimeScreenStateChange = 0; 1763 private int mOnTimeAtLastReport = 0; 1764 private long lastOntimeReportTimeStamp = 0; 1765 private long lastScreenStateChangeTimeStamp = 0; 1766 private int mOnTimeLastReport = 0; 1767 private int mTxTimeLastReport = 0; 1768 private int mRxTimeLastReport = 0; 1769 1770 private long lastLinkLayerStatsUpdate = 0; 1771 1772 String reportOnTime() { 1773 long now = System.currentTimeMillis(); 1774 StringBuilder sb = new StringBuilder(); 1775 // Report stats since last report 1776 int on = mOnTime - mOnTimeLastReport; 1777 mOnTimeLastReport = mOnTime; 1778 int tx = mTxTime - mTxTimeLastReport; 1779 mTxTimeLastReport = mTxTime; 1780 int rx = mRxTime - mRxTimeLastReport; 1781 mRxTimeLastReport = mRxTime; 1782 int period = (int)(now - lastOntimeReportTimeStamp); 1783 lastOntimeReportTimeStamp = now; 1784 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1785 // Report stats since Screen State Changed 1786 on = mOnTime - mOnTimeScreenStateChange; 1787 period = (int)(now - lastScreenStateChangeTimeStamp); 1788 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1789 return sb.toString(); 1790 } 1791 1792 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1793 WifiLinkLayerStats stats = null; 1794 if (mWifiLinkLayerStatsSupported > 0) { 1795 String name = "wlan0"; 1796 stats = mWifiNative.getWifiLinkLayerStats(name); 1797 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1798 mWifiLinkLayerStatsSupported -= 1; 1799 } else if (stats != null) { 1800 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1801 mOnTime = stats.on_time; 1802 mTxTime = stats.tx_time; 1803 mRxTime = stats.rx_time; 1804 mRunningBeaconCount = stats.beacon_rx; 1805 if (dbg) { 1806 loge(stats.toString()); 1807 } 1808 } 1809 } 1810 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1811 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1812 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1813 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1814 } else { 1815 mWifiInfo.updatePacketRates(stats); 1816 } 1817 return stats; 1818 } 1819 1820 void startRadioScanStats() { 1821 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1822 if (stats != null) { 1823 mOnTimeStartScan = stats.on_time; 1824 mTxTimeStartScan = stats.tx_time; 1825 mRxTimeStartScan = stats.rx_time; 1826 mOnTime = stats.on_time; 1827 mTxTime = stats.tx_time; 1828 mRxTime = stats.rx_time; 1829 } 1830 } 1831 1832 void closeRadioScanStats() { 1833 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1834 if (stats != null) { 1835 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1836 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1837 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1838 mOnTimeScan += mOnTimeThisScan; 1839 mTxTimeScan += mTxTimeThisScan; 1840 mRxTimeScan += mRxTimeThisScan; 1841 } 1842 } 1843 1844 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1845 private void noteScanStart(int callingUid, WorkSource workSource) { 1846 long now = System.currentTimeMillis(); 1847 lastStartScanTimeStamp = now; 1848 lastScanDuration = 0; 1849 if (DBG) { 1850 String ts = String.format("[%,d ms]", now); 1851 if (workSource != null) { 1852 loge(ts + " noteScanStart" + workSource.toString() 1853 + " uid " + Integer.toString(callingUid)); 1854 } else { 1855 loge(ts + " noteScanstart no scan source" 1856 + " uid " + Integer.toString(callingUid)); 1857 } 1858 } 1859 startRadioScanStats(); 1860 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1861 && callingUid != SCAN_ALARM_SOURCE) 1862 || workSource != null)) { 1863 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1864 try { 1865 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1866 } catch (RemoteException e) { 1867 log(e.toString()); 1868 } 1869 } 1870 } 1871 1872 private void noteScanEnd() { 1873 long now = System.currentTimeMillis(); 1874 if (lastStartScanTimeStamp != 0) { 1875 lastScanDuration = now - lastStartScanTimeStamp; 1876 } 1877 lastStartScanTimeStamp = 0; 1878 if (DBG) { 1879 String ts = String.format("[%,d ms]", now); 1880 if (mScanWorkSource != null) 1881 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1882 + " onTime=" + mOnTimeThisScan); 1883 else 1884 loge(ts + " noteScanEnd no scan source" 1885 + " onTime=" + mOnTimeThisScan); 1886 } 1887 if (mScanWorkSource != null) { 1888 try { 1889 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1890 } catch (RemoteException e) { 1891 log(e.toString()); 1892 } finally { 1893 mScanWorkSource = null; 1894 } 1895 } 1896 } 1897 1898 private void noteBatchedScanStart() { 1899 if (PDBG) loge("noteBatchedScanstart()"); 1900 // note the end of a previous scan set 1901 if (mNotedBatchedScanWorkSource != null && 1902 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1903 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1904 try { 1905 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1906 } catch (RemoteException e) { 1907 log(e.toString()); 1908 } finally { 1909 mNotedBatchedScanWorkSource = null; 1910 mNotedBatchedScanCsph = 0; 1911 } 1912 } 1913 // note the start of the new 1914 try { 1915 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1916 mBatchedScanCsph); 1917 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1918 mNotedBatchedScanCsph = mBatchedScanCsph; 1919 } catch (RemoteException e) { 1920 log(e.toString()); 1921 } 1922 } 1923 1924 private void noteBatchedScanStop() { 1925 if (PDBG) loge("noteBatchedScanstop()"); 1926 1927 if (mNotedBatchedScanWorkSource != null) { 1928 try { 1929 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1930 } catch (RemoteException e) { 1931 log(e.toString()); 1932 } finally { 1933 mNotedBatchedScanWorkSource = null; 1934 mNotedBatchedScanCsph = 0; 1935 } 1936 } 1937 } 1938 1939 private void handleScanRequest(int type, Message message) { 1940 ScanSettings settings = null; 1941 WorkSource workSource = null; 1942 1943 // unbundle parameters 1944 Bundle bundle = (Bundle) message.obj; 1945 1946 if (bundle != null) { 1947 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1948 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1949 } 1950 1951 // parse scan settings 1952 String freqs = null; 1953 if (settings != null && settings.channelSet != null) { 1954 StringBuilder sb = new StringBuilder(); 1955 boolean first = true; 1956 for (WifiChannel channel : settings.channelSet) { 1957 if (!first) sb.append(','); else first = false; 1958 sb.append(channel.freqMHz); 1959 } 1960 freqs = sb.toString(); 1961 } 1962 1963 // call wifi native to start the scan 1964 if (startScanNative(type, freqs)) { 1965 // only count battery consumption if scan request is accepted 1966 noteScanStart(message.arg1, workSource); 1967 // a full scan covers everything, clearing scan request buffer 1968 if (freqs == null) 1969 mBufferedScanMsg.clear(); 1970 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1971 if (workSource != null) { 1972 // External worksource was passed along the scan request, 1973 // hence always send a broadcast 1974 mSendScanResultsBroadcast = true; 1975 } 1976 return; 1977 } 1978 1979 // if reach here, scan request is rejected 1980 1981 if (!mIsScanOngoing) { 1982 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1983 1984 // discard this request and pop up the next one 1985 if (mBufferedScanMsg.size() > 0) { 1986 sendMessage(mBufferedScanMsg.remove()); 1987 } 1988 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1989 } else if (!mIsFullScanOngoing) { 1990 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1991 // buffer the scan request to make sure specified channels will be scanned eventually 1992 if (freqs == null) 1993 mBufferedScanMsg.clear(); 1994 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1995 Message msg = obtainMessage(CMD_START_SCAN, 1996 message.arg1, message.arg2, bundle); 1997 mBufferedScanMsg.add(msg); 1998 } else { 1999 // if too many requests in buffer, combine them into a single full scan 2000 bundle = new Bundle(); 2001 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2002 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2003 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2004 mBufferedScanMsg.clear(); 2005 mBufferedScanMsg.add(msg); 2006 } 2007 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2008 } else { 2009 // mIsScanOngoing and mIsFullScanOngoing 2010 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2011 } 2012 } 2013 2014 2015 /** return true iff scan request is accepted */ 2016 private boolean startScanNative(int type, String freqs) { 2017 if (mWifiNative.scan(type, freqs)) { 2018 mIsScanOngoing = true; 2019 mIsFullScanOngoing = (freqs == null); 2020 lastScanFreqs = freqs; 2021 return true; 2022 } 2023 return false; 2024 } 2025 2026 /** 2027 * TODO: doc 2028 */ 2029 public void setSupplicantRunning(boolean enable) { 2030 if (enable) { 2031 sendMessage(CMD_START_SUPPLICANT); 2032 } else { 2033 sendMessage(CMD_STOP_SUPPLICANT); 2034 } 2035 } 2036 2037 /** 2038 * TODO: doc 2039 */ 2040 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2041 if (enable) { 2042 sendMessage(CMD_START_AP, wifiConfig); 2043 } else { 2044 sendMessage(CMD_STOP_AP); 2045 } 2046 } 2047 2048 public void setWifiApConfiguration(WifiConfiguration config) { 2049 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2050 } 2051 2052 public WifiConfiguration syncGetWifiApConfiguration() { 2053 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2054 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2055 resultMsg.recycle(); 2056 return ret; 2057 } 2058 2059 /** 2060 * TODO: doc 2061 */ 2062 public int syncGetWifiState() { 2063 return mWifiState.get(); 2064 } 2065 2066 /** 2067 * TODO: doc 2068 */ 2069 public String syncGetWifiStateByName() { 2070 switch (mWifiState.get()) { 2071 case WIFI_STATE_DISABLING: 2072 return "disabling"; 2073 case WIFI_STATE_DISABLED: 2074 return "disabled"; 2075 case WIFI_STATE_ENABLING: 2076 return "enabling"; 2077 case WIFI_STATE_ENABLED: 2078 return "enabled"; 2079 case WIFI_STATE_UNKNOWN: 2080 return "unknown state"; 2081 default: 2082 return "[invalid state]"; 2083 } 2084 } 2085 2086 /** 2087 * TODO: doc 2088 */ 2089 public int syncGetWifiApState() { 2090 return mWifiApState.get(); 2091 } 2092 2093 /** 2094 * TODO: doc 2095 */ 2096 public String syncGetWifiApStateByName() { 2097 switch (mWifiApState.get()) { 2098 case WIFI_AP_STATE_DISABLING: 2099 return "disabling"; 2100 case WIFI_AP_STATE_DISABLED: 2101 return "disabled"; 2102 case WIFI_AP_STATE_ENABLING: 2103 return "enabling"; 2104 case WIFI_AP_STATE_ENABLED: 2105 return "enabled"; 2106 case WIFI_AP_STATE_FAILED: 2107 return "failed"; 2108 default: 2109 return "[invalid state]"; 2110 } 2111 } 2112 2113 /** 2114 * Get status information for the current connection, if any. 2115 * @return a {@link WifiInfo} object containing information about the current connection 2116 * 2117 */ 2118 public WifiInfo syncRequestConnectionInfo() { 2119 return mWifiInfo; 2120 } 2121 2122 public DhcpResults syncGetDhcpResults() { 2123 synchronized (mDhcpResultsLock) { 2124 return new DhcpResults(mDhcpResults); 2125 } 2126 } 2127 2128 /** 2129 * TODO: doc 2130 */ 2131 public void setDriverStart(boolean enable) { 2132 if (enable) { 2133 sendMessage(CMD_START_DRIVER); 2134 } else { 2135 sendMessage(CMD_STOP_DRIVER); 2136 } 2137 } 2138 2139 /** 2140 * TODO: doc 2141 */ 2142 public void setOperationalMode(int mode) { 2143 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2144 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2145 } 2146 2147 /** 2148 * TODO: doc 2149 */ 2150 public List<ScanResult> syncGetScanResultsList() { 2151 synchronized (mScanResultCache) { 2152 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2153 for(ScanDetail result: mScanResults) { 2154 scanList.add(new ScanResult(result.getScanResult())); 2155 } 2156 return scanList; 2157 } 2158 } 2159 2160 public void disableEphemeralNetwork(String SSID) { 2161 if (SSID != null) { 2162 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2163 } 2164 } 2165 2166 /** 2167 * Get unsynchronized pointer to scan result list 2168 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2169 */ 2170 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2171 return mScanResults; 2172 } 2173 2174 /** 2175 * Disconnect from Access Point 2176 */ 2177 public void disconnectCommand() { 2178 sendMessage(CMD_DISCONNECT); 2179 } 2180 2181 public void disconnectCommand(int uid, int reason) { 2182 sendMessage(CMD_DISCONNECT, uid, reason); 2183 } 2184 2185 /** 2186 * Initiate a reconnection to AP 2187 */ 2188 public void reconnectCommand() { 2189 sendMessage(CMD_RECONNECT); 2190 } 2191 2192 /** 2193 * Initiate a re-association to AP 2194 */ 2195 public void reassociateCommand() { 2196 sendMessage(CMD_REASSOCIATE); 2197 } 2198 2199 /** 2200 * Reload networks and then reconnect; helps load correct data for TLS networks 2201 */ 2202 2203 public void reloadTlsNetworksAndReconnect() { 2204 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2205 } 2206 2207 /** 2208 * Add a network synchronously 2209 * 2210 * @return network id of the new network 2211 */ 2212 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2213 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2214 int result = resultMsg.arg1; 2215 resultMsg.recycle(); 2216 return result; 2217 } 2218 2219 /** 2220 * Get configured networks synchronously 2221 * @param channel 2222 * @return 2223 */ 2224 2225 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2226 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2227 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2228 resultMsg.recycle(); 2229 return result; 2230 } 2231 2232 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2233 Message resultMsg = channel.sendMessageSynchronously( 2234 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2235 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2236 resultMsg.recycle(); 2237 return result; 2238 } 2239 2240 2241 /** 2242 * Get connection statistics synchronously 2243 * @param channel 2244 * @return 2245 */ 2246 2247 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2248 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2249 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2250 resultMsg.recycle(); 2251 return result; 2252 } 2253 2254 /** 2255 * Get adaptors synchronously 2256 */ 2257 2258 public int syncGetSupportedFeatures(AsyncChannel channel) { 2259 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2260 int supportedFeatureSet = resultMsg.arg1; 2261 resultMsg.recycle(); 2262 return supportedFeatureSet; 2263 } 2264 2265 /** 2266 * Get link layers stats for adapter synchronously 2267 */ 2268 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2269 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2270 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2271 resultMsg.recycle(); 2272 return result; 2273 } 2274 2275 /** 2276 * Delete a network 2277 * 2278 * @param networkId id of the network to be removed 2279 */ 2280 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2281 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2282 boolean result = (resultMsg.arg1 != FAILURE); 2283 resultMsg.recycle(); 2284 return result; 2285 } 2286 2287 /** 2288 * Enable a network 2289 * 2290 * @param netId network id of the network 2291 * @param disableOthers true, if all other networks have to be disabled 2292 * @return {@code true} if the operation succeeds, {@code false} otherwise 2293 */ 2294 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2295 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2296 disableOthers ? 1 : 0); 2297 boolean result = (resultMsg.arg1 != FAILURE); 2298 resultMsg.recycle(); 2299 return result; 2300 } 2301 2302 /** 2303 * Disable a network 2304 * 2305 * @param netId network id of the network 2306 * @return {@code true} if the operation succeeds, {@code false} otherwise 2307 */ 2308 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2309 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2310 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2311 resultMsg.recycle(); 2312 return result; 2313 } 2314 2315 /** 2316 * Retrieves a WPS-NFC configuration token for the specified network 2317 * @return a hex string representation of the WPS-NFC configuration token 2318 */ 2319 public String syncGetWpsNfcConfigurationToken(int netId) { 2320 return mWifiNative.getNfcWpsConfigurationToken(netId); 2321 } 2322 2323 void enableBackgroundScan(boolean enable) { 2324 if (enable) { 2325 mWifiConfigStore.enableAllNetworks(); 2326 } 2327 mWifiNative.enableBackgroundScan(enable); 2328 } 2329 2330 /** 2331 * Blacklist a BSSID. This will avoid the AP if there are 2332 * alternate APs to connect 2333 * 2334 * @param bssid BSSID of the network 2335 */ 2336 public void addToBlacklist(String bssid) { 2337 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2338 } 2339 2340 /** 2341 * Clear the blacklist list 2342 * 2343 */ 2344 public void clearBlacklist() { 2345 sendMessage(CMD_CLEAR_BLACKLIST); 2346 } 2347 2348 public void enableRssiPolling(boolean enabled) { 2349 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2350 } 2351 2352 public void enableAllNetworks() { 2353 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2354 } 2355 2356 /** 2357 * Start filtering Multicast v4 packets 2358 */ 2359 public void startFilteringMulticastV4Packets() { 2360 mFilteringMulticastV4Packets.set(true); 2361 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2362 } 2363 2364 /** 2365 * Stop filtering Multicast v4 packets 2366 */ 2367 public void stopFilteringMulticastV4Packets() { 2368 mFilteringMulticastV4Packets.set(false); 2369 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2370 } 2371 2372 /** 2373 * Start filtering Multicast v4 packets 2374 */ 2375 public void startFilteringMulticastV6Packets() { 2376 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2377 } 2378 2379 /** 2380 * Stop filtering Multicast v4 packets 2381 */ 2382 public void stopFilteringMulticastV6Packets() { 2383 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2384 } 2385 2386 /** 2387 * Set high performance mode of operation. 2388 * Enabling would set active power mode and disable suspend optimizations; 2389 * disabling would set auto power mode and enable suspend optimizations 2390 * @param enable true if enable, false otherwise 2391 */ 2392 public void setHighPerfModeEnabled(boolean enable) { 2393 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2394 } 2395 2396 /** 2397 * Set the country code 2398 * @param countryCode following ISO 3166 format 2399 * @param persist {@code true} if the setting should be remembered. 2400 */ 2401 public synchronized void setCountryCode(String countryCode, boolean persist) { 2402 // If it's a good country code, apply after the current 2403 // wifi connection is terminated; ignore resetting of code 2404 // for now (it is unclear what the chipset should do when 2405 // country code is reset) 2406 2407 if (TextUtils.isEmpty(countryCode)) { 2408 log("Ignoring resetting of country code"); 2409 } else { 2410 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2411 // else only when the new country code is different from the current one to set 2412 int countryCodeSequence = mCountryCodeSequence.get(); 2413 if(countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2414 2415 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2416 mSetCountryCode = countryCode; 2417 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2418 countryCode); 2419 } 2420 2421 if (persist) { 2422 Settings.Global.putString(mContext.getContentResolver(), 2423 Settings.Global.WIFI_COUNTRY_CODE, 2424 countryCode); 2425 } 2426 } 2427 } 2428 2429 /** 2430 * Get the country code 2431 * @param countryCode following ISO 3166 format 2432 */ 2433 public String getCountryCode() { 2434 return mSetCountryCode; 2435 } 2436 2437 2438 /** 2439 * Set the operational frequency band 2440 * @param band 2441 * @param persist {@code true} if the setting should be remembered. 2442 */ 2443 public void setFrequencyBand(int band, boolean persist) { 2444 if (persist) { 2445 Settings.Global.putInt(mContext.getContentResolver(), 2446 Settings.Global.WIFI_FREQUENCY_BAND, 2447 band); 2448 } 2449 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2450 } 2451 2452 /** 2453 * Enable TDLS for a specific MAC address 2454 */ 2455 public void enableTdls(String remoteMacAddress, boolean enable) { 2456 int enabler = enable ? 1 : 0; 2457 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2458 } 2459 2460 /** 2461 * Returns the operational frequency band 2462 */ 2463 public int getFrequencyBand() { 2464 return mFrequencyBand.get(); 2465 } 2466 2467 /** 2468 * Returns the wifi configuration file 2469 */ 2470 public String getConfigFile() { 2471 return mWifiConfigStore.getConfigFile(); 2472 } 2473 2474 /** 2475 * Send a message indicating bluetooth adapter connection state changed 2476 */ 2477 public void sendBluetoothAdapterStateChange(int state) { 2478 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2479 } 2480 2481 /** 2482 * Send a message indicating a package has been uninstalled. 2483 */ 2484 public void removeAppConfigs(String packageName, int uid) { 2485 // Build partial AppInfo manually - package may not exist in database any more 2486 ApplicationInfo ai = new ApplicationInfo(); 2487 ai.packageName = packageName; 2488 ai.uid = uid; 2489 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2490 } 2491 2492 /** 2493 * Send a message indicating a user has been removed. 2494 */ 2495 public void removeUserConfigs(int userId) { 2496 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2497 } 2498 2499 /** 2500 * Save configuration on supplicant 2501 * 2502 * @return {@code true} if the operation succeeds, {@code false} otherwise 2503 * 2504 * TODO: deprecate this 2505 */ 2506 public boolean syncSaveConfig(AsyncChannel channel) { 2507 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2508 boolean result = (resultMsg.arg1 != FAILURE); 2509 resultMsg.recycle(); 2510 return result; 2511 } 2512 2513 public void updateBatteryWorkSource(WorkSource newSource) { 2514 synchronized (mRunningWifiUids) { 2515 try { 2516 if (newSource != null) { 2517 mRunningWifiUids.set(newSource); 2518 } 2519 if (mIsRunning) { 2520 if (mReportedRunning) { 2521 // If the work source has changed since last time, need 2522 // to remove old work from battery stats. 2523 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2524 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2525 mRunningWifiUids); 2526 mLastRunningWifiUids.set(mRunningWifiUids); 2527 } 2528 } else { 2529 // Now being started, report it. 2530 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2531 mLastRunningWifiUids.set(mRunningWifiUids); 2532 mReportedRunning = true; 2533 } 2534 } else { 2535 if (mReportedRunning) { 2536 // Last reported we were running, time to stop. 2537 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2538 mLastRunningWifiUids.clear(); 2539 mReportedRunning = false; 2540 } 2541 } 2542 mWakeLock.setWorkSource(newSource); 2543 } catch (RemoteException ignore) { 2544 } 2545 } 2546 } 2547 2548 @Override 2549 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2550 super.dump(fd, pw, args); 2551 mSupplicantStateTracker.dump(fd, pw, args); 2552 pw.println("mLinkProperties " + mLinkProperties); 2553 pw.println("mWifiInfo " + mWifiInfo); 2554 pw.println("mDhcpResults " + mDhcpResults); 2555 pw.println("mNetworkInfo " + mNetworkInfo); 2556 pw.println("mLastSignalLevel " + mLastSignalLevel); 2557 pw.println("mLastBssid " + mLastBssid); 2558 pw.println("mLastNetworkId " + mLastNetworkId); 2559 pw.println("mOperationalMode " + mOperationalMode); 2560 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2561 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2562 pw.println("Supplicant status " + mWifiNative.status(true)); 2563 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2564 pw.println("mSetCountryCode " + mSetCountryCode); 2565 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2566 mNetworkFactory.dump(fd, pw, args); 2567 mUntrustedNetworkFactory.dump(fd, pw, args); 2568 pw.println(); 2569 mWifiConfigStore.dump(fd, pw, args); 2570 } 2571 2572 /********************************************************* 2573 * Internal private functions 2574 ********************************************************/ 2575 2576 private void logStateAndMessage(Message message, String state) { 2577 messageHandlingStatus = 0; 2578 if (mLogMessages) { 2579 //long now = SystemClock.elapsedRealtimeNanos(); 2580 //String ts = String.format("[%,d us]", now/1000); 2581 2582 loge( " " + state + " " + getLogRecString(message)); 2583 } 2584 } 2585 2586 /** 2587 * helper, prints the milli time since boot wi and w/o suspended time 2588 */ 2589 String printTime() { 2590 StringBuilder sb = new StringBuilder(); 2591 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2592 sb.append("/").append(SystemClock.elapsedRealtime()); 2593 return sb.toString(); 2594 } 2595 2596 /** 2597 * Return the additional string to be logged by LogRec, default 2598 * 2599 * @param msg that was processed 2600 * @return information to be logged as a String 2601 */ 2602 protected String getLogRecString(Message msg) { 2603 WifiConfiguration config; 2604 Long now; 2605 String report; 2606 String key; 2607 StringBuilder sb = new StringBuilder(); 2608 if (mScreenOn) { 2609 sb.append("!"); 2610 } 2611 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2612 sb.append("(").append(messageHandlingStatus).append(")"); 2613 } 2614 sb.append(smToString(msg)); 2615 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2616 sb.append(" uid=" + msg.sendingUid); 2617 } 2618 switch (msg.what) { 2619 case CMD_START_SCAN: 2620 now = System.currentTimeMillis(); 2621 sb.append(" "); 2622 sb.append(Integer.toString(msg.arg1)); 2623 sb.append(" "); 2624 sb.append(Integer.toString(msg.arg2)); 2625 sb.append(" ic="); 2626 sb.append(Integer.toString(sScanAlarmIntentCount)); 2627 if (msg.obj != null) { 2628 Bundle bundle = (Bundle)msg.obj; 2629 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2630 if (request != 0) { 2631 sb.append(" proc(ms):").append(now - request); 2632 } 2633 } 2634 if (mIsScanOngoing) sb.append(" onGoing"); 2635 if (mIsFullScanOngoing) sb.append(" full"); 2636 if (lastStartScanTimeStamp != 0) { 2637 sb.append(" started:").append(lastStartScanTimeStamp); 2638 sb.append(",").append(now - lastStartScanTimeStamp); 2639 } 2640 if (lastScanDuration != 0) { 2641 sb.append(" dur:").append(lastScanDuration); 2642 } 2643 sb.append(" cnt=").append(mDelayedScanCounter); 2644 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2645 sb.append(" f=").append(mWifiInfo.getFrequency()); 2646 sb.append(" sc=").append(mWifiInfo.score); 2647 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2648 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2649 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2650 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2651 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2652 if (lastScanFreqs != null) { 2653 sb.append(" list=").append(lastScanFreqs); 2654 } else { 2655 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2656 } 2657 report = reportOnTime(); 2658 if (report != null) { 2659 sb.append(" ").append(report); 2660 } 2661 break; 2662 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2663 sb.append(" "); 2664 sb.append(Integer.toString(msg.arg1)); 2665 sb.append(" "); 2666 sb.append(Integer.toString(msg.arg2)); 2667 sb.append(printTime()); 2668 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2669 if (stateChangeResult != null) { 2670 sb.append(stateChangeResult.toString()); 2671 } 2672 break; 2673 case WifiManager.SAVE_NETWORK: 2674 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2675 sb.append(" "); 2676 sb.append(Integer.toString(msg.arg1)); 2677 sb.append(" "); 2678 sb.append(Integer.toString(msg.arg2)); 2679 if (lastSavedConfigurationAttempt != null) { 2680 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2681 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2682 if (lastSavedConfigurationAttempt.hiddenSSID) { 2683 sb.append(" hidden"); 2684 } 2685 if (lastSavedConfigurationAttempt.preSharedKey != null 2686 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2687 sb.append(" hasPSK"); 2688 } 2689 if (lastSavedConfigurationAttempt.ephemeral) { 2690 sb.append(" ephemeral"); 2691 } 2692 if (lastSavedConfigurationAttempt.selfAdded) { 2693 sb.append(" selfAdded"); 2694 } 2695 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2696 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2697 } 2698 break; 2699 case WifiManager.FORGET_NETWORK: 2700 sb.append(" "); 2701 sb.append(Integer.toString(msg.arg1)); 2702 sb.append(" "); 2703 sb.append(Integer.toString(msg.arg2)); 2704 if (lastForgetConfigurationAttempt != null) { 2705 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2706 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2707 if (lastForgetConfigurationAttempt.hiddenSSID) { 2708 sb.append(" hidden"); 2709 } 2710 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2711 sb.append(" hasPSK"); 2712 } 2713 if (lastForgetConfigurationAttempt.ephemeral) { 2714 sb.append(" ephemeral"); 2715 } 2716 if (lastForgetConfigurationAttempt.selfAdded) { 2717 sb.append(" selfAdded"); 2718 } 2719 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2720 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2721 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2722 } 2723 break; 2724 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2725 sb.append(" "); 2726 sb.append(Integer.toString(msg.arg1)); 2727 sb.append(" "); 2728 sb.append(Integer.toString(msg.arg2)); 2729 String bssid = (String)msg.obj; 2730 if (bssid != null && bssid.length()>0) { 2731 sb.append(" "); 2732 sb.append(bssid); 2733 } 2734 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2735 sb.append(printTime()); 2736 break; 2737 case WifiMonitor.SCAN_RESULTS_EVENT: 2738 sb.append(" "); 2739 sb.append(Integer.toString(msg.arg1)); 2740 sb.append(" "); 2741 sb.append(Integer.toString(msg.arg2)); 2742 if (mScanResults != null) { 2743 sb.append(" found="); 2744 sb.append(mScanResults.size()); 2745 } 2746 sb.append(" known=").append(mNumScanResultsKnown); 2747 sb.append(" got=").append(mNumScanResultsReturned); 2748 if (lastScanDuration != 0) { 2749 sb.append(" dur:").append(lastScanDuration); 2750 } 2751 if (mOnTime != 0) { 2752 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2753 sb.append(",").append(mOnTime); 2754 } 2755 if (mTxTime != 0) { 2756 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2757 sb.append(",").append(mTxTime); 2758 } 2759 if (mRxTime != 0) { 2760 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2761 sb.append(",").append(mRxTime); 2762 } 2763 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2764 sb.append(String.format(" con=%d", mConnectionRequests)); 2765 key = mWifiConfigStore.getLastSelectedConfiguration(); 2766 if (key != null) { 2767 sb.append(" last=").append(key); 2768 } 2769 break; 2770 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2771 sb.append(" "); 2772 sb.append(Integer.toString(msg.arg1)); 2773 sb.append(" "); 2774 sb.append(Integer.toString(msg.arg2)); 2775 sb.append(" ").append(mLastBssid); 2776 sb.append(" nid=").append(mLastNetworkId); 2777 config = getCurrentWifiConfiguration(); 2778 if (config != null) { 2779 sb.append(" ").append(config.configKey()); 2780 } 2781 sb.append(printTime()); 2782 key = mWifiConfigStore.getLastSelectedConfiguration(); 2783 if (key != null) { 2784 sb.append(" last=").append(key); 2785 } 2786 break; 2787 case CMD_TARGET_BSSID: 2788 case CMD_ASSOCIATED_BSSID: 2789 sb.append(" "); 2790 sb.append(Integer.toString(msg.arg1)); 2791 sb.append(" "); 2792 sb.append(Integer.toString(msg.arg2)); 2793 if (msg.obj != null) { 2794 sb.append(" BSSID=").append((String)msg.obj); 2795 } 2796 if (mTargetRoamBSSID != null) { 2797 sb.append(" Target=").append(mTargetRoamBSSID); 2798 } 2799 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2800 sb.append(printTime()); 2801 break; 2802 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2803 if (msg.obj != null) { 2804 sb.append(" ").append((String)msg.obj); 2805 } 2806 sb.append(" nid=").append(msg.arg1); 2807 sb.append(" reason=").append(msg.arg2); 2808 if (mLastBssid != null) { 2809 sb.append(" lastbssid=").append(mLastBssid); 2810 } 2811 if (mWifiInfo.getFrequency() != -1) { 2812 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2813 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2814 } 2815 if (linkDebouncing) { 2816 sb.append(" debounce"); 2817 } 2818 sb.append(printTime()); 2819 break; 2820 case WifiMonitor.SSID_TEMP_DISABLED: 2821 case WifiMonitor.SSID_REENABLED: 2822 sb.append(" nid=").append(msg.arg1); 2823 if (msg.obj != null) { 2824 sb.append(" ").append((String)msg.obj); 2825 } 2826 config = getCurrentWifiConfiguration(); 2827 if (config != null) { 2828 sb.append(" cur=").append(config.configKey()); 2829 sb.append(" ajst=").append(config.autoJoinStatus); 2830 if (config.selfAdded) { 2831 sb.append(" selfAdded"); 2832 } 2833 if (config.status != 0) { 2834 sb.append(" st=").append(config.status); 2835 sb.append(" rs=").append(config.disableReason); 2836 } 2837 if (config.lastConnected != 0) { 2838 now = System.currentTimeMillis(); 2839 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2840 } 2841 if (mLastBssid != null) { 2842 sb.append(" lastbssid=").append(mLastBssid); 2843 } 2844 if (mWifiInfo.getFrequency() != -1) { 2845 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2846 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2847 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2848 } 2849 } 2850 sb.append(printTime()); 2851 break; 2852 case CMD_RSSI_POLL: 2853 case CMD_UNWANTED_NETWORK: 2854 case WifiManager.RSSI_PKTCNT_FETCH: 2855 sb.append(" "); 2856 sb.append(Integer.toString(msg.arg1)); 2857 sb.append(" "); 2858 sb.append(Integer.toString(msg.arg2)); 2859 if (mWifiInfo.getSSID() != null) 2860 if (mWifiInfo.getSSID() != null) 2861 sb.append(" ").append(mWifiInfo.getSSID()); 2862 if (mWifiInfo.getBSSID() != null) 2863 sb.append(" ").append(mWifiInfo.getBSSID()); 2864 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2865 sb.append(" f=").append(mWifiInfo.getFrequency()); 2866 sb.append(" sc=").append(mWifiInfo.score); 2867 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2868 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2869 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2870 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2871 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2872 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2873 report = reportOnTime(); 2874 if (report != null) { 2875 sb.append(" ").append(report); 2876 } 2877 if (wifiScoringReport != null) { 2878 sb.append(wifiScoringReport); 2879 } 2880 break; 2881 case CMD_AUTO_CONNECT: 2882 case WifiManager.CONNECT_NETWORK: 2883 sb.append(" "); 2884 sb.append(Integer.toString(msg.arg1)); 2885 sb.append(" "); 2886 sb.append(Integer.toString(msg.arg2)); 2887 config = (WifiConfiguration) msg.obj; 2888 if (config != null) { 2889 sb.append(" ").append(config.configKey()); 2890 if (config.visibility != null) { 2891 sb.append(" ").append(config.visibility.toString()); 2892 } 2893 } 2894 if (mTargetRoamBSSID != null) { 2895 sb.append(" ").append(mTargetRoamBSSID); 2896 } 2897 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2898 sb.append(printTime()); 2899 config = getCurrentWifiConfiguration(); 2900 if (config != null) { 2901 sb.append(config.configKey()); 2902 if (config.visibility != null) { 2903 sb.append(" ").append(config.visibility.toString()); 2904 } 2905 } 2906 break; 2907 case CMD_AUTO_ROAM: 2908 sb.append(" "); 2909 sb.append(Integer.toString(msg.arg1)); 2910 sb.append(" "); 2911 sb.append(Integer.toString(msg.arg2)); 2912 ScanResult result = (ScanResult)msg.obj; 2913 if (result != null) { 2914 now = System.currentTimeMillis(); 2915 sb.append(" bssid=").append(result.BSSID); 2916 sb.append(" rssi=").append(result.level); 2917 sb.append(" freq=").append(result.frequency); 2918 if (result.seen > 0 && result.seen < now) { 2919 sb.append(" seen=").append(now - result.seen); 2920 } else { 2921 // Somehow the timestamp for this scan result is inconsistent 2922 sb.append(" !seen=").append(result.seen); 2923 } 2924 } 2925 if (mTargetRoamBSSID != null) { 2926 sb.append(" ").append(mTargetRoamBSSID); 2927 } 2928 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2929 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2930 sb.append(printTime()); 2931 break; 2932 case CMD_ADD_OR_UPDATE_NETWORK: 2933 sb.append(" "); 2934 sb.append(Integer.toString(msg.arg1)); 2935 sb.append(" "); 2936 sb.append(Integer.toString(msg.arg2)); 2937 if (msg.obj != null) { 2938 config = (WifiConfiguration)msg.obj; 2939 sb.append(" ").append(config.configKey()); 2940 sb.append(" prio=").append(config.priority); 2941 sb.append(" status=").append(config.status); 2942 if (config.BSSID != null) { 2943 sb.append(" ").append(config.BSSID); 2944 } 2945 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2946 if (curConfig != null) { 2947 if (curConfig.configKey().equals(config.configKey())) { 2948 sb.append(" is current"); 2949 } else { 2950 sb.append(" current=").append(curConfig.configKey()); 2951 sb.append(" prio=").append(curConfig.priority); 2952 sb.append(" status=").append(curConfig.status); 2953 } 2954 } 2955 } 2956 break; 2957 case WifiManager.DISABLE_NETWORK: 2958 case CMD_ENABLE_NETWORK: 2959 sb.append(" "); 2960 sb.append(Integer.toString(msg.arg1)); 2961 sb.append(" "); 2962 sb.append(Integer.toString(msg.arg2)); 2963 key = mWifiConfigStore.getLastSelectedConfiguration(); 2964 if (key != null) { 2965 sb.append(" last=").append(key); 2966 } 2967 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2968 if (config != null && (key == null || !config.configKey().equals(key))) { 2969 sb.append(" target=").append(key); 2970 } 2971 break; 2972 case CMD_GET_CONFIGURED_NETWORKS: 2973 sb.append(" "); 2974 sb.append(Integer.toString(msg.arg1)); 2975 sb.append(" "); 2976 sb.append(Integer.toString(msg.arg2)); 2977 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2978 break; 2979 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2980 sb.append(" "); 2981 sb.append(Integer.toString(msg.arg1)); 2982 sb.append(" "); 2983 sb.append(Integer.toString(msg.arg2)); 2984 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2985 sb.append(",").append(mWifiInfo.txBad); 2986 sb.append(",").append(mWifiInfo.txRetries); 2987 break; 2988 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2989 sb.append(" "); 2990 sb.append(Integer.toString(msg.arg1)); 2991 sb.append(" "); 2992 sb.append(Integer.toString(msg.arg2)); 2993 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2994 sb.append(" OK "); 2995 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2996 sb.append(" FAIL "); 2997 } 2998 if (mLinkProperties != null) { 2999 if (mLinkProperties.hasIPv4Address()) { 3000 sb.append(" v4"); 3001 } 3002 if (mLinkProperties.hasGlobalIPv6Address()) { 3003 sb.append(" v6"); 3004 } 3005 if (mLinkProperties.hasIPv4DefaultRoute()) { 3006 sb.append(" v4r"); 3007 } 3008 if (mLinkProperties.hasIPv6DefaultRoute()) { 3009 sb.append(" v6r"); 3010 } 3011 if (mLinkProperties.hasIPv4DnsServer()) { 3012 sb.append(" v4dns"); 3013 } 3014 if (mLinkProperties.hasIPv6DnsServer()) { 3015 sb.append(" v6dns"); 3016 } 3017 } 3018 break; 3019 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3020 sb.append(" "); 3021 sb.append(Integer.toString(msg.arg1)); 3022 sb.append(" "); 3023 sb.append(Integer.toString(msg.arg2)); 3024 if (msg.obj != null) { 3025 NetworkInfo info = (NetworkInfo)msg.obj; 3026 NetworkInfo.State state = info.getState(); 3027 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3028 if (state != null) { 3029 sb.append(" st=").append(state); 3030 } 3031 if (detailedState != null) { 3032 sb.append("/").append(detailedState); 3033 } 3034 } 3035 break; 3036 case CMD_IP_CONFIGURATION_LOST: 3037 int count = -1; 3038 WifiConfiguration c = getCurrentWifiConfiguration(); 3039 if (c != null) count = c.numIpConfigFailures; 3040 sb.append(" "); 3041 sb.append(Integer.toString(msg.arg1)); 3042 sb.append(" "); 3043 sb.append(Integer.toString(msg.arg2)); 3044 sb.append(" failures: "); 3045 sb.append(Integer.toString(count)); 3046 sb.append("/"); 3047 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3048 if (mWifiInfo.getBSSID() != null) { 3049 sb.append(" ").append(mWifiInfo.getBSSID()); 3050 } 3051 if (c != null) { 3052 if (c.scanResultCache != null) { 3053 for (ScanResult r : c.scanResultCache.values()) { 3054 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3055 sb.append(" ipfail=").append(r.numIpConfigFailures); 3056 sb.append(",st=").append(r.autoJoinStatus); 3057 } 3058 } 3059 } 3060 sb.append(" -> ajst=").append(c.autoJoinStatus); 3061 sb.append(" ").append(c.disableReason); 3062 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3063 sb.append(",").append(mWifiInfo.txBad); 3064 sb.append(",").append(mWifiInfo.txRetries); 3065 } 3066 sb.append(printTime()); 3067 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3068 break; 3069 case CMD_UPDATE_LINKPROPERTIES: 3070 sb.append(" "); 3071 sb.append(Integer.toString(msg.arg1)); 3072 sb.append(" "); 3073 sb.append(Integer.toString(msg.arg2)); 3074 if (mLinkProperties != null) { 3075 if (mLinkProperties.hasIPv4Address()) { 3076 sb.append(" v4"); 3077 } 3078 if (mLinkProperties.hasGlobalIPv6Address()) { 3079 sb.append(" v6"); 3080 } 3081 if (mLinkProperties.hasIPv4DefaultRoute()) { 3082 sb.append(" v4r"); 3083 } 3084 if (mLinkProperties.hasIPv6DefaultRoute()) { 3085 sb.append(" v6r"); 3086 } 3087 if (mLinkProperties.hasIPv4DnsServer()) { 3088 sb.append(" v4dns"); 3089 } 3090 if (mLinkProperties.hasIPv6DnsServer()) { 3091 sb.append(" v6dns"); 3092 } 3093 } 3094 break; 3095 case CMD_SET_COUNTRY_CODE: 3096 sb.append(" "); 3097 sb.append(Integer.toString(msg.arg1)); 3098 sb.append(" "); 3099 sb.append(Integer.toString(msg.arg2)); 3100 if (msg.obj != null) { 3101 sb.append(" ").append((String)msg.obj); 3102 } 3103 break; 3104 case CMD_ROAM_WATCHDOG_TIMER: 3105 sb.append(" "); 3106 sb.append(Integer.toString(msg.arg1)); 3107 sb.append(" "); 3108 sb.append(Integer.toString(msg.arg2)); 3109 sb.append(" cur=").append(roamWatchdogCount); 3110 break; 3111 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3112 sb.append(" "); 3113 sb.append(Integer.toString(msg.arg1)); 3114 sb.append(" "); 3115 sb.append(Integer.toString(msg.arg2)); 3116 sb.append(" cur=").append(disconnectingWatchdogCount); 3117 break; 3118 default: 3119 sb.append(" "); 3120 sb.append(Integer.toString(msg.arg1)); 3121 sb.append(" "); 3122 sb.append(Integer.toString(msg.arg2)); 3123 break; 3124 } 3125 3126 return sb.toString(); 3127 } 3128 3129 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3130 mScreenOn = screenOn; 3131 if (PDBG) { 3132 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3133 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3134 + " state " + getCurrentState().getName() 3135 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3136 } 3137 enableRssiPolling(screenOn); 3138 if (screenOn) enableAllNetworks(); 3139 if (mUserWantsSuspendOpt.get()) { 3140 if (screenOn) { 3141 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3142 } else { 3143 // Allow 2s for suspend optimizations to be set 3144 mSuspendWakeLock.acquire(2000); 3145 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3146 } 3147 } 3148 mScreenBroadcastReceived.set(true); 3149 3150 getWifiLinkLayerStats(false); 3151 mOnTimeScreenStateChange = mOnTime; 3152 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3153 mEnableBackgroundScan = false; 3154 cancelDelayedScan(); 3155 3156 if (screenOn) { 3157 setScanAlarm(false); 3158 clearBlacklist(); 3159 3160 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 3161 // In either Disconnectedstate or ConnectedState, 3162 // start the scan alarm so as to enable autojoin 3163 if (getCurrentState() == mConnectedState 3164 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 3165 // Scan after 500ms 3166 startDelayedScan(500, null, null); 3167 } else if (getCurrentState() == mDisconnectedState) { 3168 // Scan after 200ms 3169 startDelayedScan(200, null, null); 3170 } 3171 } else if (startBackgroundScanIfNeeded) { 3172 // Screen Off and Disconnected and chipset doesn't support scan offload 3173 // => start scan alarm 3174 // Screen Off and Disconnected and chipset does support scan offload 3175 // => will use scan offload (i.e. background scan) 3176 if (!mBackgroundScanSupported) { 3177 setScanAlarm(true); 3178 } else { 3179 mEnableBackgroundScan = true; 3180 } 3181 } 3182 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3183 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3184 if (startBackgroundScanIfNeeded) { 3185 // to scan for them in background, we need all networks enabled 3186 enableBackgroundScan(mEnableBackgroundScan); 3187 } 3188 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3189 } 3190 3191 private void checkAndSetConnectivityInstance() { 3192 if (mCm == null) { 3193 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3194 } 3195 } 3196 3197 private boolean startTethering(ArrayList<String> available) { 3198 3199 boolean wifiAvailable = false; 3200 3201 checkAndSetConnectivityInstance(); 3202 3203 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3204 3205 for (String intf : available) { 3206 for (String regex : wifiRegexs) { 3207 if (intf.matches(regex)) { 3208 3209 InterfaceConfiguration ifcg = null; 3210 try { 3211 ifcg = mNwService.getInterfaceConfig(intf); 3212 if (ifcg != null) { 3213 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3214 ifcg.setLinkAddress(new LinkAddress( 3215 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3216 ifcg.setInterfaceUp(); 3217 3218 mNwService.setInterfaceConfig(intf, ifcg); 3219 } 3220 } catch (Exception e) { 3221 loge("Error configuring interface " + intf + ", :" + e); 3222 return false; 3223 } 3224 3225 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3226 loge("Error tethering on " + intf); 3227 return false; 3228 } 3229 mTetherInterfaceName = intf; 3230 return true; 3231 } 3232 } 3233 } 3234 // We found no interfaces to tether 3235 return false; 3236 } 3237 3238 private void stopTethering() { 3239 3240 checkAndSetConnectivityInstance(); 3241 3242 /* Clear the interface config to allow dhcp correctly configure new 3243 ip settings */ 3244 InterfaceConfiguration ifcg = null; 3245 try { 3246 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3247 if (ifcg != null) { 3248 ifcg.setLinkAddress( 3249 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3250 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3251 } 3252 } catch (Exception e) { 3253 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3254 } 3255 3256 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3257 loge("Untether initiate failed!"); 3258 } 3259 } 3260 3261 private boolean isWifiTethered(ArrayList<String> active) { 3262 3263 checkAndSetConnectivityInstance(); 3264 3265 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3266 for (String intf : active) { 3267 for (String regex : wifiRegexs) { 3268 if (intf.matches(regex)) { 3269 return true; 3270 } 3271 } 3272 } 3273 // We found no interfaces that are tethered 3274 return false; 3275 } 3276 3277 /** 3278 * Set the country code from the system setting value, if any. 3279 */ 3280 private void setCountryCode() { 3281 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3282 Settings.Global.WIFI_COUNTRY_CODE); 3283 if (countryCode != null && !countryCode.isEmpty()) { 3284 setCountryCode(countryCode, false); 3285 } else { 3286 //use driver default 3287 } 3288 } 3289 3290 /** 3291 * Set the frequency band from the system setting value, if any. 3292 */ 3293 private void setFrequencyBand() { 3294 int band = Settings.Global.getInt(mContext.getContentResolver(), 3295 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3296 setFrequencyBand(band, false); 3297 } 3298 3299 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3300 if (DBG) { 3301 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3302 + " -want " + mUserWantsSuspendOpt.get() 3303 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3304 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3305 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3306 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3307 } 3308 //mWifiNative.setSuspendOptimizations(enabled); 3309 3310 if (enabled) { 3311 mSuspendOptNeedsDisabled &= ~reason; 3312 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3313 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3314 if (DBG) { 3315 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3316 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3317 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3318 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3319 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3320 } 3321 mWifiNative.setSuspendOptimizations(true); 3322 } 3323 } else { 3324 mSuspendOptNeedsDisabled |= reason; 3325 mWifiNative.setSuspendOptimizations(false); 3326 } 3327 } 3328 3329 private void setSuspendOptimizations(int reason, boolean enabled) { 3330 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3331 if (enabled) { 3332 mSuspendOptNeedsDisabled &= ~reason; 3333 } else { 3334 mSuspendOptNeedsDisabled |= reason; 3335 } 3336 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3337 } 3338 3339 private void setWifiState(int wifiState) { 3340 final int previousWifiState = mWifiState.get(); 3341 3342 try { 3343 if (wifiState == WIFI_STATE_ENABLED) { 3344 mBatteryStats.noteWifiOn(); 3345 } else if (wifiState == WIFI_STATE_DISABLED) { 3346 mBatteryStats.noteWifiOff(); 3347 } 3348 } catch (RemoteException e) { 3349 loge("Failed to note battery stats in wifi"); 3350 } 3351 3352 mWifiState.set(wifiState); 3353 3354 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3355 3356 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3357 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3358 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3359 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3360 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3361 } 3362 3363 private void setWifiApState(int wifiApState) { 3364 final int previousWifiApState = mWifiApState.get(); 3365 3366 try { 3367 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3368 mBatteryStats.noteWifiOn(); 3369 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3370 mBatteryStats.noteWifiOff(); 3371 } 3372 } catch (RemoteException e) { 3373 loge("Failed to note battery stats in wifi"); 3374 } 3375 3376 // Update state 3377 mWifiApState.set(wifiApState); 3378 3379 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3380 3381 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3382 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3383 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3384 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3385 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3386 } 3387 3388 /* 3389 void ageOutScanResults(int age) { 3390 synchronized(mScanResultCache) { 3391 // Trim mScanResults, which prevent WifiStateMachine to return 3392 // obsolete scan results to queriers 3393 long now = System.CurrentTimeMillis(); 3394 for (int i = 0; i < mScanResults.size(); i++) { 3395 ScanResult result = mScanResults.get(i); 3396 if ((result.seen > now || (now - result.seen) > age)) { 3397 mScanResults.remove(i); 3398 } 3399 } 3400 } 3401 }*/ 3402 3403 private static final String IE_STR = "ie="; 3404 private static final String ID_STR = "id="; 3405 private static final String BSSID_STR = "bssid="; 3406 private static final String FREQ_STR = "freq="; 3407 private static final String LEVEL_STR = "level="; 3408 private static final String TSF_STR = "tsf="; 3409 private static final String FLAGS_STR = "flags="; 3410 private static final String SSID_STR = "ssid="; 3411 private static final String DELIMITER_STR = "===="; 3412 private static final String END_STR = "####"; 3413 3414 int emptyScanResultCount = 0; 3415 3416 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3417 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3418 3419 /** 3420 * Format: 3421 * 3422 * id=1 3423 * bssid=68:7f:76:d7:1a:6e 3424 * freq=2412 3425 * level=-44 3426 * tsf=1344626243700342 3427 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3428 * ssid=zfdy 3429 * ==== 3430 * id=2 3431 * bssid=68:5f:74:d7:1a:6f 3432 * freq=5180 3433 * level=-73 3434 * tsf=1344626243700373 3435 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3436 * ssid=zuby 3437 * ==== 3438 */ 3439 private void setScanResults() { 3440 mNumScanResultsKnown = 0; 3441 mNumScanResultsReturned = 0; 3442 String bssid = ""; 3443 int level = 0; 3444 int freq = 0; 3445 long tsf = 0; 3446 String flags = ""; 3447 WifiSsid wifiSsid = null; 3448 String scanResults; 3449 String tmpResults; 3450 StringBuffer scanResultsBuf = new StringBuffer(); 3451 int sid = 0; 3452 3453 while (true) { 3454 tmpResults = mWifiNative.scanResults(sid); 3455 if (TextUtils.isEmpty(tmpResults)) break; 3456 scanResultsBuf.append(tmpResults); 3457 scanResultsBuf.append("\n"); 3458 String[] lines = tmpResults.split("\n"); 3459 sid = -1; 3460 for (int i=lines.length - 1; i >= 0; i--) { 3461 if (lines[i].startsWith(END_STR)) { 3462 break; 3463 } else if (lines[i].startsWith(ID_STR)) { 3464 try { 3465 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3466 } catch (NumberFormatException e) { 3467 // Nothing to do 3468 } 3469 break; 3470 } 3471 } 3472 if (sid == -1) break; 3473 } 3474 3475 // Age out scan results, we return all scan results found in the last 12 seconds, 3476 // and NOT all scan results since last scan. 3477 // ageOutScanResults(12000); 3478 3479 scanResults = scanResultsBuf.toString(); 3480 if (TextUtils.isEmpty(scanResults)) { 3481 emptyScanResultCount++; 3482 if (emptyScanResultCount > 10) { 3483 // If we got too many empty scan results, the current scan cache is stale, 3484 // hence clear it. 3485 mScanResults = new ArrayList<>(); 3486 } 3487 return; 3488 } 3489 3490 emptyScanResultCount = 0; 3491 3492 // note that all these splits and substrings keep references to the original 3493 // huge string buffer while the amount we really want is generally pretty small 3494 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3495 synchronized(mScanResultCache) { 3496 mScanResults = new ArrayList<>(); 3497 String[] lines = scanResults.split("\n"); 3498 final int bssidStrLen = BSSID_STR.length(); 3499 final int flagLen = FLAGS_STR.length(); 3500 String infoElements = null; 3501 List<String> anqpLines = null; 3502 3503 for (String line : lines) { 3504 if (line.startsWith(BSSID_STR)) { 3505 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3506 } else if (line.startsWith(FREQ_STR)) { 3507 try { 3508 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3509 } catch (NumberFormatException e) { 3510 freq = 0; 3511 } 3512 } else if (line.startsWith(LEVEL_STR)) { 3513 try { 3514 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3515 /* some implementations avoid negative values by adding 256 3516 * so we need to adjust for that here. 3517 */ 3518 if (level > 0) level -= 256; 3519 } catch(NumberFormatException e) { 3520 level = 0; 3521 } 3522 } else if (line.startsWith(TSF_STR)) { 3523 try { 3524 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3525 } catch (NumberFormatException e) { 3526 tsf = 0; 3527 } 3528 } else if (line.startsWith(FLAGS_STR)) { 3529 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3530 } else if (line.startsWith(SSID_STR)) { 3531 wifiSsid = WifiSsid.createFromAsciiEncoded( 3532 line.substring(SSID_STR.length())); 3533 } else if (line.startsWith(IE_STR)) { 3534 infoElements = line; 3535 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3536 if (anqpLines == null) { 3537 anqpLines = new ArrayList<>(); 3538 } 3539 anqpLines.add(line); 3540 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3541 if (bssid != null) { 3542 try { 3543 NetworkDetail networkDetail = 3544 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3545 3546 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3547 if (!xssid.equals(networkDetail.getSSID())) { 3548 Log.d("HS2J", "Inconsistency: SSID: '" + xssid + 3549 "' vs '" + networkDetail.getSSID() + "': " + infoElements); 3550 } 3551 3552 if (networkDetail.hasInterworking()) { 3553 Log.d("HS2J", "HSNwk: '" + networkDetail); 3554 } 3555 3556 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3557 if (scanDetail != null) { 3558 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3559 flags, freq, tsf); 3560 } else { 3561 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3562 flags, level, freq, tsf); 3563 mScanResultCache.put(networkDetail, scanDetail); 3564 } 3565 3566 mNumScanResultsReturned++; // Keep track of how many scan results we got 3567 // as part of this scan's processing 3568 mScanResults.add(scanDetail); 3569 } 3570 catch (IllegalArgumentException iae) { 3571 Log.d("HS2J", "Failed to parse information elements: " + iae); 3572 } catch (BufferUnderflowException bue) { 3573 Log.d("HS2J", "Failed to parse information elements: " + bue); 3574 } 3575 } 3576 bssid = null; 3577 level = 0; 3578 freq = 0; 3579 tsf = 0; 3580 flags = ""; 3581 wifiSsid = null; 3582 infoElements = null; 3583 anqpLines = null; 3584 } 3585 } 3586 } 3587 3588 boolean attemptAutoJoin = true; 3589 SupplicantState state = mWifiInfo.getSupplicantState(); 3590 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3591 if (getCurrentState() == mRoamingState 3592 || getCurrentState() == mObtainingIpState 3593 || getCurrentState() == mScanModeState 3594 || getCurrentState() == mDisconnectingState 3595 || (getCurrentState() == mConnectedState 3596 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3597 || linkDebouncing 3598 || state == SupplicantState.ASSOCIATING 3599 || state == SupplicantState.AUTHENTICATING 3600 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3601 || state == SupplicantState.GROUP_HANDSHAKE 3602 || (/* keep autojoin enabled if user has manually selected a wifi network, 3603 so as to make sure we reliably remain connected to this network */ 3604 mConnectionRequests == 0 && selection == null)) { 3605 // Dont attempt auto-joining again while we are already attempting to join 3606 // and/or obtaining Ip address 3607 attemptAutoJoin = false; 3608 } 3609 if (DBG) { 3610 if (selection == null) { 3611 selection = "<none>"; 3612 } 3613 loge("wifi setScanResults state" + getCurrentState() 3614 + " sup_state=" + state 3615 + " debouncing=" + linkDebouncing 3616 + " mConnectionRequests=" + mConnectionRequests 3617 + " selection=" + selection); 3618 } 3619 if (attemptAutoJoin) { 3620 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3621 } 3622 // Loose last selected configuration if we have been disconnected for 5 minutes 3623 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3624 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3625 } 3626 3627 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3628 synchronized(mScanResultCache) { 3629 // AutoJoincontroller will directly acces the scan result list and update it with 3630 // ScanResult status 3631 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3632 } 3633 } 3634 if (linkDebouncing) { 3635 // If debouncing, we dont re-select a SSID or BSSID hence 3636 // there is no need to call the network selection code 3637 // in WifiAutoJoinController, instead, 3638 // just try to reconnect to the same SSID by triggering a roam 3639 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3640 } 3641 } 3642 3643 /* 3644 * Fetch RSSI, linkspeed, and frequency on current connection 3645 */ 3646 private void fetchRssiLinkSpeedAndFrequencyNative() { 3647 int newRssi = -1; 3648 int newLinkSpeed = -1; 3649 int newFrequency = -1; 3650 3651 String signalPoll = mWifiNative.signalPoll(); 3652 3653 if (signalPoll != null) { 3654 String[] lines = signalPoll.split("\n"); 3655 for (String line : lines) { 3656 String[] prop = line.split("="); 3657 if (prop.length < 2) continue; 3658 try { 3659 if (prop[0].equals("RSSI")) { 3660 newRssi = Integer.parseInt(prop[1]); 3661 } else if (prop[0].equals("LINKSPEED")) { 3662 newLinkSpeed = Integer.parseInt(prop[1]); 3663 } else if (prop[0].equals("FREQUENCY")) { 3664 newFrequency = Integer.parseInt(prop[1]); 3665 } 3666 } catch (NumberFormatException e) { 3667 //Ignore, defaults on rssi and linkspeed are assigned 3668 } 3669 } 3670 } 3671 3672 if (PDBG) { 3673 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3674 + Integer.toString(newRssi) + " linkspeed=" 3675 + Integer.toString(newLinkSpeed)); 3676 } 3677 3678 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3679 // screen out invalid values 3680 /* some implementations avoid negative values by adding 256 3681 * so we need to adjust for that here. 3682 */ 3683 if (newRssi > 0) newRssi -= 256; 3684 mWifiInfo.setRssi(newRssi); 3685 /* 3686 * Rather then sending the raw RSSI out every time it 3687 * changes, we precalculate the signal level that would 3688 * be displayed in the status bar, and only send the 3689 * broadcast if that much more coarse-grained number 3690 * changes. This cuts down greatly on the number of 3691 * broadcasts, at the cost of not informing others 3692 * interested in RSSI of all the changes in signal 3693 * level. 3694 */ 3695 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3696 if (newSignalLevel != mLastSignalLevel) { 3697 sendRssiChangeBroadcast(newRssi); 3698 } 3699 mLastSignalLevel = newSignalLevel; 3700 } else { 3701 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3702 } 3703 3704 if (newLinkSpeed != -1) { 3705 mWifiInfo.setLinkSpeed(newLinkSpeed); 3706 } 3707 if (newFrequency > 0) { 3708 if (ScanResult.is5GHz(newFrequency)) { 3709 mWifiConnectionStatistics.num5GhzConnected++; 3710 } 3711 if (ScanResult.is24GHz(newFrequency)) { 3712 mWifiConnectionStatistics.num24GhzConnected++; 3713 } 3714 mWifiInfo.setFrequency(newFrequency); 3715 } 3716 mWifiConfigStore.updateConfiguration(mWifiInfo); 3717 } 3718 3719 /** 3720 * Determine if we need to switch network: 3721 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3722 * - match the uregncy of the switch versus the packet usage at the interface 3723 */ 3724 boolean shouldSwitchNetwork(int networkDelta) { 3725 int delta; 3726 if (networkDelta <= 0) { 3727 return false; 3728 } 3729 delta = networkDelta; 3730 if (mWifiInfo != null) { 3731 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3732 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3733 // If AutoJoin while associated is not enabled, 3734 // we should never switch network when already associated 3735 delta = -1000; 3736 } else { 3737 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3738 // TODO: at the interface. We should also discriminate between ucast and mcast, 3739 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3740 // TODO: broadcasts 3741 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3742 delta -= 999; 3743 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3744 delta -= 6; 3745 } 3746 loge("WifiStateMachine shouldSwitchNetwork " 3747 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3748 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3749 + " delta " + networkDelta + " -> " + delta); 3750 } 3751 } else { 3752 loge("WifiStateMachine shouldSwitchNetwork " 3753 + " delta " + networkDelta + " -> " + delta); 3754 } 3755 if (delta > 0) { 3756 return true; 3757 } 3758 return false; 3759 } 3760 3761 // Polling has completed, hence we wont have a score anymore 3762 private void cleanWifiScore() { 3763 mWifiInfo.txBadRate = 0; 3764 mWifiInfo.txSuccessRate = 0; 3765 mWifiInfo.txRetriesRate = 0; 3766 mWifiInfo.rxSuccessRate = 0; 3767 } 3768 3769 int mBadLinkspeedcount = 0; 3770 3771 // For debug, provide information about the last scoring operation 3772 String wifiScoringReport = null; 3773 private void calculateWifiScore(WifiLinkLayerStats stats) { 3774 StringBuilder sb = new StringBuilder(); 3775 3776 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3777 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3778 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3779 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3780 < mWifiConfigStore.badLinkSpeed5); 3781 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3782 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3783 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3784 >= mWifiConfigStore.goodLinkSpeed5); 3785 3786 if (isBadLinkspeed) { 3787 if (mBadLinkspeedcount < 6) 3788 mBadLinkspeedcount++; 3789 } else { 3790 if (mBadLinkspeedcount > 0) 3791 mBadLinkspeedcount--; 3792 } 3793 3794 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3795 if (isGoodLinkspeed) sb.append(" gl"); 3796 3797 /** 3798 * We want to make sure that we use the 24GHz RSSI thresholds if 3799 * there are 2.4GHz scan results 3800 * otherwise we end up lowering the score based on 5GHz values 3801 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3802 * We also might unblacklist the configuation based on 2.4GHz 3803 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3804 */ 3805 boolean use24Thresholds = false; 3806 boolean homeNetworkBoost = false; 3807 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3808 if (currentConfiguration != null 3809 && currentConfiguration.scanResultCache != null) { 3810 currentConfiguration.setVisibility(12000); 3811 if (currentConfiguration.visibility != null) { 3812 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3813 && currentConfiguration.visibility.rssi24 3814 >= (currentConfiguration.visibility.rssi5-2)) { 3815 use24Thresholds = true; 3816 } 3817 } 3818 if (currentConfiguration.scanResultCache.size() <= 6 3819 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3820 && currentConfiguration.allowedKeyManagement. 3821 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3822 // A PSK network with less than 6 known BSSIDs 3823 // This is most likely a home network and thus we want to stick to wifi more 3824 homeNetworkBoost = true; 3825 } 3826 } 3827 if (homeNetworkBoost) sb.append(" hn"); 3828 if (use24Thresholds) sb.append(" u24"); 3829 3830 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3831 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3832 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3833 3834 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3835 3836 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 3837 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 3838 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 3839 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 3840 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 3841 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 3842 3843 if (isBadRSSI) sb.append(" br"); 3844 if (isLowRSSI) sb.append(" lr"); 3845 if (isHighRSSI) sb.append(" hr"); 3846 3847 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3848 if (currentConfiguration!= null && 3849 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3850 if (isBadRSSI) { 3851 currentConfiguration.numTicksAtBadRSSI++; 3852 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3853 // We remained associated for a compound amount of time while passing 3854 // traffic, hence loose the corresponding user triggered disabled stats 3855 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3856 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3857 } 3858 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3859 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3860 } 3861 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3862 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3863 } 3864 currentConfiguration.numTicksAtBadRSSI = 0; 3865 } 3866 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3867 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3868 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3869 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3870 score = score -5; 3871 penalizedDueToUserTriggeredDisconnect = 1; 3872 sb.append(" p1"); 3873 } 3874 } else if (isLowRSSI) { 3875 currentConfiguration.numTicksAtLowRSSI++; 3876 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3877 // We remained associated for a compound amount of time while passing 3878 // traffic, hence loose the corresponding user triggered disabled stats 3879 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3880 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3881 } 3882 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3883 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3884 } 3885 currentConfiguration.numTicksAtLowRSSI = 0; 3886 } 3887 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3888 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3889 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3890 score = score -5; 3891 penalizedDueToUserTriggeredDisconnect = 2; 3892 sb.append(" p2"); 3893 } 3894 } else if (!isHighRSSI) { 3895 currentConfiguration.numTicksAtNotHighRSSI++; 3896 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3897 // We remained associated for a compound amount of time while passing 3898 // traffic, hence loose the corresponding user triggered disabled stats 3899 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3900 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3901 } 3902 currentConfiguration.numTicksAtNotHighRSSI = 0; 3903 } 3904 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3905 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3906 score = score -5; 3907 penalizedDueToUserTriggeredDisconnect = 3; 3908 sb.append(" p3"); 3909 } 3910 } 3911 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3912 currentConfiguration.numTicksAtLowRSSI, 3913 currentConfiguration.numTicksAtNotHighRSSI)); 3914 } 3915 3916 if (PDBG) { 3917 String rssiStatus = ""; 3918 if (isBadRSSI) rssiStatus += " badRSSI "; 3919 else if (isHighRSSI) rssiStatus += " highRSSI "; 3920 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3921 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3922 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3923 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3924 + " score=" + Integer.toString(mWifiInfo.score) 3925 + rssiStatus 3926 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3927 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3928 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3929 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3930 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3931 } 3932 3933 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3934 && (isBadRSSI || isLowRSSI)) { 3935 // Link is stuck 3936 if (mWifiInfo.linkStuckCount < 5) 3937 mWifiInfo.linkStuckCount += 1; 3938 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3939 if (PDBG) loge(" bad link -> stuck count =" 3940 + Integer.toString(mWifiInfo.linkStuckCount)); 3941 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3942 if (mWifiInfo.linkStuckCount > 0) 3943 mWifiInfo.linkStuckCount -= 1; 3944 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3945 if (PDBG) loge(" good link -> stuck count =" 3946 + Integer.toString(mWifiInfo.linkStuckCount)); 3947 } 3948 3949 sb.append(String.format(" [%d", score)); 3950 3951 if (mWifiInfo.linkStuckCount > 1) { 3952 // Once link gets stuck for more than 3 seconds, start reducing the score 3953 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3954 } 3955 sb.append(String.format(",%d", score)); 3956 3957 if (isBadLinkspeed) { 3958 score -= 4 ; 3959 if (PDBG) { 3960 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3961 + " score=" + Integer.toString(score)); 3962 } 3963 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3964 score += 4; // So as bad rssi alone dont kill us 3965 } 3966 sb.append(String.format(",%d", score)); 3967 3968 if (isBadRSSI) { 3969 if (mWifiInfo.badRssiCount < 7) 3970 mWifiInfo.badRssiCount += 1; 3971 } else if (isLowRSSI) { 3972 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3973 if (mWifiInfo.badRssiCount > 0) { 3974 // Decrement bad Rssi count 3975 mWifiInfo.badRssiCount -= 1; 3976 } 3977 } else { 3978 mWifiInfo.badRssiCount = 0; 3979 mWifiInfo.lowRssiCount = 0; 3980 } 3981 3982 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3983 sb.append(String.format(",%d", score)); 3984 3985 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3986 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3987 + " --> score " + Integer.toString(score)); 3988 3989 3990 if (isHighRSSI) { 3991 score += 5; 3992 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3993 } 3994 sb.append(String.format(",%d]", score)); 3995 3996 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3997 3998 //sanitize boundaries 3999 if (score > NetworkAgent.WIFI_BASE_SCORE) 4000 score = NetworkAgent.WIFI_BASE_SCORE; 4001 if (score < 0) 4002 score = 0; 4003 4004 //report score 4005 if (score != mWifiInfo.score) { 4006 if (DBG) { 4007 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4008 } 4009 mWifiInfo.score = score; 4010 if (mNetworkAgent != null) { 4011 mNetworkAgent.sendNetworkScore(score); 4012 } 4013 } 4014 wifiScoringReport = sb.toString(); 4015 } 4016 4017 public double getTxPacketRate() { 4018 if (mWifiInfo != null) { 4019 return mWifiInfo.txSuccessRate; 4020 } 4021 return -1; 4022 } 4023 4024 public double getRxPacketRate() { 4025 if (mWifiInfo != null) { 4026 return mWifiInfo.rxSuccessRate; 4027 } 4028 return -1; 4029 } 4030 4031 /** 4032 * Fetch TX packet counters on current connection 4033 */ 4034 private void fetchPktcntNative(RssiPacketCountInfo info) { 4035 String pktcntPoll = mWifiNative.pktcntPoll(); 4036 4037 if (pktcntPoll != null) { 4038 String[] lines = pktcntPoll.split("\n"); 4039 for (String line : lines) { 4040 String[] prop = line.split("="); 4041 if (prop.length < 2) continue; 4042 try { 4043 if (prop[0].equals("TXGOOD")) { 4044 info.txgood = Integer.parseInt(prop[1]); 4045 } else if (prop[0].equals("TXBAD")) { 4046 info.txbad = Integer.parseInt(prop[1]); 4047 } 4048 } catch (NumberFormatException e) { 4049 // Ignore 4050 } 4051 } 4052 } 4053 } 4054 4055 private boolean clearIPv4Address(String iface) { 4056 try { 4057 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4058 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4059 mNwService.setInterfaceConfig(iface, ifcg); 4060 return true; 4061 } catch (RemoteException e) { 4062 return false; 4063 } 4064 } 4065 4066 private boolean isProvisioned(LinkProperties lp) { 4067 return lp.isProvisioned() || 4068 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4069 } 4070 4071 /** 4072 * Updates mLinkProperties by merging information from various sources. 4073 * 4074 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4075 * netlink, static configuration, ...). When one of these sources of information has updated 4076 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4077 * information that came from other sources. Instead, when one of those sources has new 4078 * information, we update the object that tracks the information from that source and then 4079 * call this method to apply the change to mLinkProperties. 4080 * 4081 * The information in mLinkProperties is currently obtained as follows: 4082 * - Interface name: set in the constructor. 4083 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4084 * - IPv4 routes, DNS servers, and domains: DHCP. 4085 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4086 * - HTTP proxy: the wifi config store. 4087 */ 4088 private void updateLinkProperties(int reason) { 4089 LinkProperties newLp = new LinkProperties(); 4090 4091 // Interface name and proxy are locally configured. 4092 newLp.setInterfaceName(mInterfaceName); 4093 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4094 4095 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4096 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4097 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4098 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4099 newLp.addRoute(route); 4100 } 4101 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4102 newLp.addDnsServer(dns); 4103 } 4104 4105 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4106 synchronized (mDhcpResultsLock) { 4107 // Even when we're using static configuration, we don't need to look at the config 4108 // store, because static IP configuration also populates mDhcpResults. 4109 if ((mDhcpResults != null)) { 4110 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4111 newLp.addRoute(route); 4112 } 4113 for (InetAddress dns : mDhcpResults.dnsServers) { 4114 newLp.addDnsServer(dns); 4115 } 4116 newLp.setDomains(mDhcpResults.domains); 4117 } 4118 } 4119 4120 final boolean linkChanged = !newLp.equals(mLinkProperties); 4121 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4122 final boolean isProvisioned = isProvisioned(newLp); 4123 final boolean lostIPv4Provisioning = 4124 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4125 final DetailedState detailedState = getNetworkDetailedState(); 4126 4127 if (linkChanged) { 4128 if (DBG) { 4129 log("Link configuration changed for netId: " + mLastNetworkId 4130 + " old: " + mLinkProperties + " new: " + newLp); 4131 } 4132 mLinkProperties = newLp; 4133 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 4134 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 4135 } 4136 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4137 } 4138 4139 if (DBG) { 4140 StringBuilder sb = new StringBuilder(); 4141 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4142 sb.append(" state: " + detailedState); 4143 sb.append(" reason: " + smToString(reason)); 4144 4145 if (mLinkProperties != null) { 4146 if (mLinkProperties.hasIPv4Address()) { 4147 sb.append(" v4"); 4148 } 4149 if (mLinkProperties.hasGlobalIPv6Address()) { 4150 sb.append(" v6"); 4151 } 4152 if (mLinkProperties.hasIPv4DefaultRoute()) { 4153 sb.append(" v4r"); 4154 } 4155 if (mLinkProperties.hasIPv6DefaultRoute()) { 4156 sb.append(" v6r"); 4157 } 4158 if (mLinkProperties.hasIPv4DnsServer()) { 4159 sb.append(" v4dns"); 4160 } 4161 if (mLinkProperties.hasIPv6DnsServer()) { 4162 sb.append(" v6dns"); 4163 } 4164 if (isProvisioned) { 4165 sb.append(" isprov"); 4166 } 4167 } 4168 loge(sb.toString()); 4169 } 4170 4171 // If we just configured or lost IP configuration, do the needful. 4172 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4173 // here because those should only be called if we're attempting to connect or already 4174 // connected, whereas updateLinkProperties can be called at any time. 4175 switch (reason) { 4176 case DhcpStateMachine.DHCP_SUCCESS: 4177 case CMD_STATIC_IP_SUCCESS: 4178 // IPv4 provisioning succeded. Advance to connected state. 4179 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4180 if (!isProvisioned) { 4181 // Can never happen unless DHCP reports success but isProvisioned thinks the 4182 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4183 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4184 // TODO: disconnect here instead. If our configuration is not usable, there's no 4185 // point in staying connected, and if mLinkProperties is out of sync with 4186 // reality, that will cause problems in the future. 4187 loge("IPv4 config succeeded, but not provisioned"); 4188 } 4189 break; 4190 4191 case DhcpStateMachine.DHCP_FAILURE: 4192 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4193 // give up and disconnect. 4194 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4195 if (!isProvisioned || lostIPv4Provisioning) { 4196 sendMessage(CMD_IP_CONFIGURATION_LOST); 4197 } else { 4198 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4199 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4200 4201 // To be sure we don't get stuck with a non-working network if all we had is 4202 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4203 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4204 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4205 // necessary for provisioning, its deletion will cause us to disconnect. 4206 // 4207 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4208 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4209 // not return true if we're using DHCP and don't have an IPv4 default route. So 4210 // for now it's only here for extra redundancy. However, it will increase 4211 // robustness if we move to getting IPv4 routes from netlink as well. 4212 loge("DHCP failure: provisioned, clearing IPv4 address."); 4213 if (!clearIPv4Address(mInterfaceName)) { 4214 sendMessage(CMD_IP_CONFIGURATION_LOST); 4215 } 4216 } 4217 break; 4218 4219 case CMD_STATIC_IP_FAILURE: 4220 // Static configuration was invalid, or an error occurred in applying it. Give up. 4221 sendMessage(CMD_IP_CONFIGURATION_LOST); 4222 break; 4223 4224 case CMD_UPDATE_LINKPROPERTIES: 4225 // IP addresses, DNS servers, etc. changed. Act accordingly. 4226 if (wasProvisioned && !isProvisioned) { 4227 // We no longer have a usable network configuration. Disconnect. 4228 sendMessage(CMD_IP_CONFIGURATION_LOST); 4229 } else if (!wasProvisioned && isProvisioned) { 4230 // We have a usable IPv6-only config. Advance to connected state. 4231 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4232 } 4233 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4234 // If anything has changed and we're already connected, send out a notification. 4235 sendLinkConfigurationChangedBroadcast(); 4236 } 4237 break; 4238 } 4239 } 4240 4241 /** 4242 * Clears all our link properties. 4243 */ 4244 private void clearLinkProperties() { 4245 // Clear the link properties obtained from DHCP and netlink. 4246 synchronized (mDhcpResultsLock) { 4247 if (mDhcpResults != null) { 4248 mDhcpResults.clear(); 4249 } 4250 } 4251 mNetlinkTracker.clearLinkProperties(); 4252 4253 // Now clear the merged link properties. 4254 mLinkProperties.clear(); 4255 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4256 } 4257 4258 /** 4259 * try to update default route MAC address. 4260 */ 4261 private String updateDefaultRouteMacAddress(int timeout) { 4262 String address = null; 4263 for (RouteInfo route : mLinkProperties.getRoutes()) { 4264 if (route.isDefaultRoute() && route.hasGateway()) { 4265 InetAddress gateway = route.getGateway(); 4266 if (gateway instanceof Inet4Address) { 4267 if (PDBG) { 4268 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4269 + gateway.getHostAddress()); 4270 } 4271 address = macAddressFromRoute(gateway.getHostAddress()); 4272 /* The gateway's MAC address is known */ 4273 if ((address == null) && (timeout > 0)) { 4274 boolean reachable = false; 4275 try { 4276 reachable = gateway.isReachable(timeout); 4277 } catch (Exception e) { 4278 loge("updateDefaultRouteMacAddress exception reaching :" 4279 + gateway.getHostAddress()); 4280 4281 } finally { 4282 if (reachable == true) { 4283 4284 address = macAddressFromRoute(gateway.getHostAddress()); 4285 if (PDBG) { 4286 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4287 + gateway.getHostAddress() + " found " + address); 4288 } 4289 } 4290 } 4291 } 4292 if (address != null) { 4293 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4294 } 4295 } 4296 } 4297 } 4298 return address; 4299 } 4300 4301 private void sendScanResultsAvailableBroadcast() { 4302 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4303 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4304 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4305 } 4306 4307 private void sendRssiChangeBroadcast(final int newRssi) { 4308 try { 4309 mBatteryStats.noteWifiRssiChanged(newRssi); 4310 } catch (RemoteException e) { 4311 // Won't happen. 4312 } 4313 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4314 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4315 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4316 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4317 } 4318 4319 private void sendNetworkStateChangeBroadcast(String bssid) { 4320 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4321 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4322 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4323 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4324 if (bssid != null) 4325 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4326 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4327 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4328 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4329 } 4330 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4331 } 4332 4333 private void sendLinkConfigurationChangedBroadcast() { 4334 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4335 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4336 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4337 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4338 } 4339 4340 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4341 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4342 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4343 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4344 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4345 } 4346 4347 /** 4348 * Record the detailed state of a network. 4349 * @param state the new {@code DetailedState} 4350 */ 4351 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4352 boolean hidden = false; 4353 4354 if (linkDebouncing || isRoaming()) { 4355 // There is generally a confusion in the system about colluding 4356 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4357 // which leads to multiple confusion. 4358 // 4359 // If link is de-bouncing or roaming, we already have an IP address 4360 // as well we were connected and are doing L2 cycles of 4361 // reconnecting or renewing IP address to check that we still have it 4362 // This L2 link flapping should ne be reflected into the Network state 4363 // which is the state of the WiFi Network visible to Layer 3 and applications 4364 // Note that once debouncing and roaming are completed, we will 4365 // set the Network state to where it should be, or leave it as unchanged 4366 // 4367 hidden = true; 4368 } 4369 if (DBG) { 4370 log("setDetailed state, old =" 4371 + mNetworkInfo.getDetailedState() + " and new state=" + state 4372 + " hidden=" + hidden); 4373 } 4374 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4375 // Always indicate that SSID has changed 4376 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4377 if (DBG) { 4378 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4379 } 4380 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4381 sendNetworkStateChangeBroadcast(null); 4382 } 4383 } 4384 if (hidden == true) { 4385 return false; 4386 } 4387 4388 if (state != mNetworkInfo.getDetailedState()) { 4389 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4390 if (mNetworkAgent != null) { 4391 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4392 } 4393 sendNetworkStateChangeBroadcast(null); 4394 return true; 4395 } 4396 return false; 4397 } 4398 4399 private DetailedState getNetworkDetailedState() { 4400 return mNetworkInfo.getDetailedState(); 4401 } 4402 4403 private SupplicantState handleSupplicantStateChange(Message message) { 4404 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4405 SupplicantState state = stateChangeResult.state; 4406 // Supplicant state change 4407 // [31-13] Reserved for future use 4408 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4409 // 50023 supplicant_state_changed (custom|1|5) 4410 mWifiInfo.setSupplicantState(state); 4411 // Network id is only valid when we start connecting 4412 if (SupplicantState.isConnecting(state)) { 4413 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4414 } else { 4415 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4416 } 4417 4418 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4419 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4420 4421 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4422 4423 return state; 4424 } 4425 4426 /** 4427 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4428 * using the interface, stopping DHCP & disabling interface 4429 */ 4430 private void handleNetworkDisconnect() { 4431 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4432 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4433 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4434 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4435 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4436 4437 4438 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4439 4440 stopDhcp(); 4441 4442 try { 4443 mNwService.clearInterfaceAddresses(mInterfaceName); 4444 mNwService.disableIpv6(mInterfaceName); 4445 } catch (Exception e) { 4446 loge("Failed to clear addresses or disable ipv6" + e); 4447 } 4448 4449 /* Reset data structures */ 4450 mBadLinkspeedcount = 0; 4451 mWifiInfo.reset(); 4452 linkDebouncing = false; 4453 /* Reset roaming parameters */ 4454 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4455 4456 /** 4457 * fullBandConnectedTimeIntervalMilli: 4458 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4459 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4460 * Initialize to sane value = 20 seconds 4461 */ 4462 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4463 4464 setNetworkDetailedState(DetailedState.DISCONNECTED); 4465 if (mNetworkAgent != null) { 4466 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4467 mNetworkAgent = null; 4468 } 4469 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4470 4471 /* Clear network properties */ 4472 clearLinkProperties(); 4473 4474 /* Cend event to CM & network change broadcast */ 4475 sendNetworkStateChangeBroadcast(mLastBssid); 4476 4477 /* Cancel auto roam requests */ 4478 autoRoamSetBSSID(mLastNetworkId, "any"); 4479 4480 mLastBssid= null; 4481 registerDisconnected(); 4482 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4483 } 4484 4485 private void handleSupplicantConnectionLoss() { 4486 /* Socket connection can be lost when we do a graceful shutdown 4487 * or when the driver is hung. Ensure supplicant is stopped here. 4488 */ 4489 mWifiMonitor.killSupplicant(mP2pSupported); 4490 mWifiNative.closeSupplicantConnection(); 4491 sendSupplicantConnectionChangedBroadcast(false); 4492 setWifiState(WIFI_STATE_DISABLED); 4493 } 4494 4495 void handlePreDhcpSetup() { 4496 mDhcpActive = true; 4497 if (!mBluetoothConnectionActive) { 4498 /* 4499 * There are problems setting the Wi-Fi driver's power 4500 * mode to active when bluetooth coexistence mode is 4501 * enabled or sense. 4502 * <p> 4503 * We set Wi-Fi to active mode when 4504 * obtaining an IP address because we've found 4505 * compatibility issues with some routers with low power 4506 * mode. 4507 * <p> 4508 * In order for this active power mode to properly be set, 4509 * we disable coexistence mode until we're done with 4510 * obtaining an IP address. One exception is if we 4511 * are currently connected to a headset, since disabling 4512 * coexistence would interrupt that connection. 4513 */ 4514 // Disable the coexistence mode 4515 mWifiNative.setBluetoothCoexistenceMode( 4516 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4517 } 4518 4519 // Disable power save and suspend optimizations during DHCP 4520 // Note: The order here is important for now. Brcm driver changes 4521 // power settings when we control suspend mode optimizations. 4522 // TODO: Remove this comment when the driver is fixed. 4523 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4524 mWifiNative.setPowerSave(false); 4525 4526 // stopBatchedScan(); 4527 WifiNative.pauseScan(); 4528 4529 // Update link layer stats 4530 getWifiLinkLayerStats(false); 4531 4532 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4533 Message msg = new Message(); 4534 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4535 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4536 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4537 msg.obj = mDhcpStateMachine; 4538 mWifiP2pChannel.sendMessage(msg); 4539 } 4540 4541 4542 private boolean useLegacyDhcpClient() { 4543 return Settings.Global.getInt( 4544 mContext.getContentResolver(), 4545 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4546 } 4547 4548 private void maybeInitDhcpStateMachine() { 4549 if (mDhcpStateMachine == null) { 4550 if (useLegacyDhcpClient()) { 4551 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4552 mContext, WifiStateMachine.this, mInterfaceName); 4553 } else { 4554 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4555 mContext, WifiStateMachine.this, mInterfaceName); 4556 } 4557 } 4558 } 4559 4560 void startDhcp() { 4561 maybeInitDhcpStateMachine(); 4562 mDhcpStateMachine.registerForPreDhcpNotification(); 4563 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4564 } 4565 4566 void renewDhcp() { 4567 maybeInitDhcpStateMachine(); 4568 mDhcpStateMachine.registerForPreDhcpNotification(); 4569 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4570 } 4571 4572 void stopDhcp() { 4573 if (mDhcpStateMachine != null) { 4574 /* In case we were in middle of DHCP operation restore back powermode */ 4575 handlePostDhcpSetup(); 4576 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4577 } 4578 } 4579 4580 void handlePostDhcpSetup() { 4581 /* Restore power save and suspend optimizations */ 4582 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4583 mWifiNative.setPowerSave(true); 4584 4585 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4586 4587 // Set the coexistence mode back to its default value 4588 mWifiNative.setBluetoothCoexistenceMode( 4589 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4590 4591 mDhcpActive = false; 4592 4593 // startBatchedScan(); 4594 WifiNative.restartScan(); 4595 } 4596 4597 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4598 4599 if (PDBG) { 4600 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4601 loge("link address " + dhcpResults.ipAddress); 4602 } 4603 4604 synchronized (mDhcpResultsLock) { 4605 mDhcpResults = dhcpResults; 4606 } 4607 4608 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4609 if (isRoaming()) { 4610 if (addr instanceof Inet4Address) { 4611 int previousAddress = mWifiInfo.getIpAddress(); 4612 int newAddress = NetworkUtils.inetAddressToInt(addr); 4613 if (previousAddress != newAddress) { 4614 loge("handleIPv4Success, roaming and address changed" + 4615 mWifiInfo + " got: " + addr); 4616 } else { 4617 4618 } 4619 } else { 4620 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4621 addr.toString()); 4622 } 4623 } 4624 mWifiInfo.setInetAddress(addr); 4625 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4626 updateLinkProperties(reason); 4627 } 4628 4629 private void handleSuccessfulIpConfiguration() { 4630 mLastSignalLevel = -1; // Force update of signal strength 4631 WifiConfiguration c = getCurrentWifiConfiguration(); 4632 if (c != null) { 4633 // Reset IP failure tracking 4634 c.numConnectionFailures = 0; 4635 4636 // Tell the framework whether the newly connected network is trusted or untrusted. 4637 updateCapabilities(c); 4638 } 4639 if (c != null) { 4640 ScanResult result = getCurrentScanResult(); 4641 if (result == null) { 4642 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4643 c.configKey()); 4644 } else { 4645 // Clear the per BSSID failure count 4646 result.numIpConfigFailures = 0; 4647 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4648 // any BSSID, even though it may already have a non zero ip failure count, 4649 // this will typically happen if the user walks away and come back to his arrea 4650 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4651 // in supplicant for a couple of hours or a day 4652 mWifiNative.clearBlacklist(); 4653 } 4654 } 4655 } 4656 4657 private void handleIPv4Failure(int reason) { 4658 synchronized(mDhcpResultsLock) { 4659 if (mDhcpResults != null) { 4660 mDhcpResults.clear(); 4661 } 4662 } 4663 if (PDBG) { 4664 loge("wifistatemachine handleIPv4Failure"); 4665 } 4666 updateLinkProperties(reason); 4667 } 4668 4669 private void handleIpConfigurationLost() { 4670 mWifiInfo.setInetAddress(null); 4671 mWifiInfo.setMeteredHint(false); 4672 4673 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4674 "DHCP FAILURE", mWifiInfo.getBSSID()); 4675 4676 /* DHCP times out after about 30 seconds, we do a 4677 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4678 */ 4679 mWifiNative.disconnect(); 4680 } 4681 4682 private int convertFrequencyToChannelNumber(int frequency) { 4683 if (frequency >= 2412 && frequency <= 2484) { 4684 return (frequency -2412) / 5 + 1; 4685 } else if (frequency >= 5170 && frequency <=5825) { 4686 //DFS is included 4687 return (frequency -5170) / 5 + 34; 4688 } else { 4689 return 0; 4690 } 4691 } 4692 4693 private int chooseApChannel(int apBand) { 4694 int apChannel; 4695 int[] channel; 4696 4697 if (apBand == 0) { 4698 //for 2.4GHz, we only set the AP at channel 1,6,11 4699 apChannel = 5 * mRandom.nextInt(3) + 1; 4700 } else { 4701 //5G without DFS 4702 channel = mWifiNative.getChannelsForBand(2); 4703 if (channel != null && channel.length > 0) { 4704 apChannel = channel[mRandom.nextInt(channel.length)]; 4705 apChannel = convertFrequencyToChannelNumber(apChannel); 4706 } else { 4707 Log.e(TAG, "SoftAp do not get available channel list"); 4708 apChannel = 0; 4709 } 4710 } 4711 4712 if(DBG) { 4713 Log.d(TAG, "SoftAp set on channel " + apChannel); 4714 } 4715 4716 return apChannel; 4717 } 4718 4719 4720 /* Current design is to not set the config on a running hostapd but instead 4721 * stop and start tethering when user changes config on a running access point 4722 * 4723 * TODO: Add control channel setup through hostapd that allows changing config 4724 * on a running daemon 4725 */ 4726 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4727 // set channel 4728 final WifiConfiguration config = new WifiConfiguration(configuration); 4729 4730 if (DBG) { 4731 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4732 } 4733 //set country code through HAL Here 4734 if (mSetCountryCode != null) { 4735 if(!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 4736 if (config.apBand != 0) { 4737 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 4738 //countrycode is mandatory for 5GHz 4739 sendMessage(CMD_START_AP_FAILURE); 4740 return; 4741 } 4742 } 4743 } else { 4744 if (config.apBand != 0) { 4745 //countrycode is mandatory for 5GHz 4746 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 4747 sendMessage(CMD_START_AP_FAILURE); 4748 return; 4749 } 4750 } 4751 4752 if (config.apChannel == 0) { 4753 config.apChannel = chooseApChannel(config.apBand); 4754 if (config.apChannel == 0) { 4755 //fail to get available channel 4756 sendMessage(CMD_START_AP_FAILURE); 4757 return; 4758 } 4759 } 4760 //turn off interface 4761 if (!mWifiNative.toggleInterface(0)) { 4762 sendMessage(CMD_START_AP_FAILURE); 4763 return; 4764 } 4765 // Start hostapd on a separate thread 4766 new Thread(new Runnable() { 4767 public void run() { 4768 try { 4769 mNwService.startAccessPoint(config, mInterfaceName); 4770 } catch (Exception e) { 4771 loge("Exception in softap start " + e); 4772 try { 4773 mNwService.stopAccessPoint(mInterfaceName); 4774 mNwService.startAccessPoint(config, mInterfaceName); 4775 } catch (Exception e1) { 4776 loge("Exception in softap re-start " + e1); 4777 sendMessage(CMD_START_AP_FAILURE); 4778 return; 4779 } 4780 } 4781 if (DBG) log("Soft AP start successful"); 4782 sendMessage(CMD_START_AP_SUCCESS); 4783 } 4784 }).start(); 4785 } 4786 4787 /* 4788 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4789 * so as to record MAC address of default gateway. 4790 **/ 4791 private String macAddressFromRoute(String ipAddress) { 4792 String macAddress = null; 4793 BufferedReader reader = null; 4794 try { 4795 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4796 4797 // Skip over the line bearing colum titles 4798 String line = reader.readLine(); 4799 4800 while ((line = reader.readLine()) != null) { 4801 String[] tokens = line.split("[ ]+"); 4802 if (tokens.length < 6) { 4803 continue; 4804 } 4805 4806 // ARP column format is 4807 // Address HWType HWAddress Flags Mask IFace 4808 String ip = tokens[0]; 4809 String mac = tokens[3]; 4810 4811 if (ipAddress.equals(ip)) { 4812 macAddress = mac; 4813 break; 4814 } 4815 } 4816 4817 if (macAddress == null) { 4818 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4819 "/proc/net/arp"); 4820 } 4821 4822 } catch (FileNotFoundException e) { 4823 loge("Could not open /proc/net/arp to lookup mac address"); 4824 } catch (IOException e) { 4825 loge("Could not read /proc/net/arp to lookup mac address"); 4826 } finally { 4827 try { 4828 if (reader != null) { 4829 reader.close(); 4830 } 4831 } catch (IOException e) { 4832 // Do nothing 4833 } 4834 } 4835 return macAddress; 4836 4837 } 4838 4839 private class WifiNetworkFactory extends NetworkFactory { 4840 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4841 super(l, c, TAG, f); 4842 } 4843 4844 @Override 4845 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4846 ++mConnectionRequests; 4847 } 4848 4849 @Override 4850 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4851 --mConnectionRequests; 4852 } 4853 4854 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4855 pw.println("mConnectionRequests " + mConnectionRequests); 4856 } 4857 4858 } 4859 4860 private class UntrustedWifiNetworkFactory extends NetworkFactory { 4861 private int mUntrustedReqCount; 4862 4863 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 4864 super(l, c, tag, f); 4865 } 4866 4867 @Override 4868 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4869 if (!networkRequest.networkCapabilities.hasCapability( 4870 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4871 if (++mUntrustedReqCount == 1) { 4872 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4873 } 4874 } 4875 } 4876 4877 @Override 4878 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4879 if (!networkRequest.networkCapabilities.hasCapability( 4880 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4881 if (--mUntrustedReqCount == 0) { 4882 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4883 } 4884 } 4885 } 4886 4887 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4888 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4889 } 4890 } 4891 4892 void maybeRegisterNetworkFactory() { 4893 if (mNetworkFactory == null) { 4894 checkAndSetConnectivityInstance(); 4895 if (mCm != null) { 4896 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4897 NETWORKTYPE, mNetworkCapabilitiesFilter); 4898 mNetworkFactory.setScoreFilter(60); 4899 mNetworkFactory.register(); 4900 4901 // We can't filter untrusted network in the capabilities filter because a trusted 4902 // network would still satisfy a request that accepts untrusted ones. 4903 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 4904 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 4905 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 4906 mUntrustedNetworkFactory.register(); 4907 } 4908 } 4909 } 4910 4911 /******************************************************** 4912 * HSM states 4913 *******************************************************/ 4914 4915 class DefaultState extends State { 4916 @Override 4917 public boolean processMessage(Message message) { 4918 logStateAndMessage(message, getClass().getSimpleName()); 4919 4920 switch (message.what) { 4921 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4922 AsyncChannel ac = (AsyncChannel) message.obj; 4923 if (ac == mWifiP2pChannel) { 4924 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4925 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4926 } else { 4927 loge("WifiP2pService connection failure, error=" + message.arg1); 4928 } 4929 } else { 4930 loge("got HALF_CONNECTED for unknown channel"); 4931 } 4932 break; 4933 } 4934 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4935 AsyncChannel ac = (AsyncChannel) message.obj; 4936 if (ac == mWifiP2pChannel) { 4937 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4938 //TODO: Re-establish connection to state machine after a delay 4939 // mWifiP2pChannel.connect(mContext, getHandler(), 4940 // mWifiP2pManager.getMessenger()); 4941 } 4942 break; 4943 } 4944 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4945 mBluetoothConnectionActive = (message.arg1 != 4946 BluetoothAdapter.STATE_DISCONNECTED); 4947 break; 4948 /* Synchronous call returns */ 4949 case CMD_PING_SUPPLICANT: 4950 case CMD_ENABLE_NETWORK: 4951 case CMD_ADD_OR_UPDATE_NETWORK: 4952 case CMD_REMOVE_NETWORK: 4953 case CMD_SAVE_CONFIG: 4954 replyToMessage(message, message.what, FAILURE); 4955 break; 4956 case CMD_GET_CAPABILITY_FREQ: 4957 replyToMessage(message, message.what, null); 4958 break; 4959 case CMD_GET_CONFIGURED_NETWORKS: 4960 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4961 break; 4962 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4963 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4964 break; 4965 case CMD_ENABLE_RSSI_POLL: 4966 mEnableRssiPolling = (message.arg1 == 1); 4967 break; 4968 case CMD_SET_HIGH_PERF_MODE: 4969 if (message.arg1 == 1) { 4970 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4971 } else { 4972 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4973 } 4974 break; 4975 case CMD_BOOT_COMPLETED: 4976 maybeRegisterNetworkFactory(); 4977 break; 4978 case CMD_SET_BATCHED_SCAN: 4979 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4980 break; 4981 case CMD_POLL_BATCHED_SCAN: 4982 handleBatchedScanPollRequest(); 4983 break; 4984 case CMD_START_NEXT_BATCHED_SCAN: 4985 startNextBatchedScan(); 4986 break; 4987 case CMD_SCREEN_STATE_CHANGED: 4988 handleScreenStateChanged(message.arg1 != 0, 4989 /* startBackgroundScanIfNeeded = */ false); 4990 break; 4991 /* Discard */ 4992 case CMD_START_SCAN: 4993 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4994 break; 4995 case CMD_START_SUPPLICANT: 4996 case CMD_STOP_SUPPLICANT: 4997 case CMD_STOP_SUPPLICANT_FAILED: 4998 case CMD_START_DRIVER: 4999 case CMD_STOP_DRIVER: 5000 case CMD_DELAYED_STOP_DRIVER: 5001 case CMD_DRIVER_START_TIMED_OUT: 5002 case CMD_START_AP: 5003 case CMD_START_AP_SUCCESS: 5004 case CMD_START_AP_FAILURE: 5005 case CMD_STOP_AP: 5006 case CMD_TETHER_STATE_CHANGE: 5007 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5008 case CMD_DISCONNECT: 5009 case CMD_RECONNECT: 5010 case CMD_REASSOCIATE: 5011 case CMD_RELOAD_TLS_AND_RECONNECT: 5012 case WifiMonitor.SUP_CONNECTION_EVENT: 5013 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5014 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5015 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5016 case WifiMonitor.SCAN_RESULTS_EVENT: 5017 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5018 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5019 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5020 case WifiMonitor.WPS_OVERLAP_EVENT: 5021 case CMD_BLACKLIST_NETWORK: 5022 case CMD_CLEAR_BLACKLIST: 5023 case CMD_SET_OPERATIONAL_MODE: 5024 case CMD_SET_COUNTRY_CODE: 5025 case CMD_SET_FREQUENCY_BAND: 5026 case CMD_RSSI_POLL: 5027 case CMD_ENABLE_ALL_NETWORKS: 5028 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5029 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5030 /* Handled by WifiApConfigStore */ 5031 case CMD_SET_AP_CONFIG: 5032 case CMD_SET_AP_CONFIG_COMPLETED: 5033 case CMD_REQUEST_AP_CONFIG: 5034 case CMD_RESPONSE_AP_CONFIG: 5035 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5036 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5037 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5038 case CMD_DISABLE_P2P_RSP: 5039 case WifiMonitor.SUP_REQUEST_IDENTITY: 5040 case CMD_TEST_NETWORK_DISCONNECT: 5041 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5042 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5043 case CMD_TARGET_BSSID: 5044 case CMD_AUTO_CONNECT: 5045 case CMD_AUTO_ROAM: 5046 case CMD_AUTO_SAVE_NETWORK: 5047 case CMD_ASSOCIATED_BSSID: 5048 case CMD_UNWANTED_NETWORK: 5049 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5050 case CMD_ROAM_WATCHDOG_TIMER: 5051 case CMD_DISABLE_EPHEMERAL_NETWORK: 5052 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5053 break; 5054 case DhcpStateMachine.CMD_ON_QUIT: 5055 mDhcpStateMachine = null; 5056 break; 5057 case CMD_SET_SUSPEND_OPT_ENABLED: 5058 if (message.arg1 == 1) { 5059 mSuspendWakeLock.release(); 5060 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5061 } else { 5062 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5063 } 5064 break; 5065 case WifiMonitor.DRIVER_HUNG_EVENT: 5066 setSupplicantRunning(false); 5067 setSupplicantRunning(true); 5068 break; 5069 case WifiManager.CONNECT_NETWORK: 5070 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5071 WifiManager.BUSY); 5072 break; 5073 case WifiManager.FORGET_NETWORK: 5074 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5075 WifiManager.BUSY); 5076 break; 5077 case WifiManager.SAVE_NETWORK: 5078 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5079 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5080 WifiManager.BUSY); 5081 break; 5082 case WifiManager.START_WPS: 5083 replyToMessage(message, WifiManager.WPS_FAILED, 5084 WifiManager.BUSY); 5085 break; 5086 case WifiManager.CANCEL_WPS: 5087 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5088 WifiManager.BUSY); 5089 break; 5090 case WifiManager.DISABLE_NETWORK: 5091 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5092 WifiManager.BUSY); 5093 break; 5094 case WifiManager.RSSI_PKTCNT_FETCH: 5095 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5096 WifiManager.BUSY); 5097 break; 5098 case CMD_GET_SUPPORTED_FEATURES: 5099 if (WifiNative.startHal()) { 5100 int featureSet = WifiNative.getSupportedFeatureSet(); 5101 replyToMessage(message, message.what, featureSet); 5102 } else { 5103 replyToMessage(message, message.what, 0); 5104 } 5105 break; 5106 case CMD_GET_LINK_LAYER_STATS: 5107 // Not supported hence reply with error message 5108 replyToMessage(message, message.what, null); 5109 break; 5110 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5111 NetworkInfo info = (NetworkInfo) message.obj; 5112 mP2pConnected.set(info.isConnected()); 5113 break; 5114 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5115 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5116 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5117 break; 5118 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5119 case CMD_UPDATE_LINKPROPERTIES: 5120 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5121 break; 5122 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5123 case CMD_IP_CONFIGURATION_LOST: 5124 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5125 break; 5126 case CMD_GET_CONNECTION_STATISTICS: 5127 replyToMessage(message, message.what, mWifiConnectionStatistics); 5128 break; 5129 case CMD_REMOVE_APP_CONFIGURATIONS: 5130 deferMessage(message); 5131 break; 5132 case CMD_REMOVE_USER_CONFIGURATIONS: 5133 deferMessage(message); 5134 break; 5135 default: 5136 loge("Error! unhandled message" + message); 5137 break; 5138 } 5139 return HANDLED; 5140 } 5141 } 5142 5143 class InitialState extends State { 5144 @Override 5145 public void enter() { 5146 mWifiNative.unloadDriver(); 5147 5148 if (mWifiP2pChannel == null) { 5149 mWifiP2pChannel = new AsyncChannel(); 5150 mWifiP2pChannel.connect(mContext, getHandler(), 5151 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5152 } 5153 5154 if (mWifiApConfigChannel == null) { 5155 mWifiApConfigChannel = new AsyncChannel(); 5156 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5157 mContext, getHandler()); 5158 wifiApConfigStore.loadApConfiguration(); 5159 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5160 wifiApConfigStore.getMessenger()); 5161 } 5162 } 5163 @Override 5164 public boolean processMessage(Message message) { 5165 logStateAndMessage(message, getClass().getSimpleName()); 5166 switch (message.what) { 5167 case CMD_START_SUPPLICANT: 5168 if (mWifiNative.loadDriver()) { 5169 try { 5170 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5171 } catch (Exception e) { 5172 loge("Failed to reload STA firmware " + e); 5173 // Continue 5174 } 5175 5176 try { 5177 // A runtime crash can leave the interface up and 5178 // IP addresses configured, and this affects 5179 // connectivity when supplicant starts up. 5180 // Ensure interface is down and we have no IP 5181 // addresses before a supplicant start. 5182 mNwService.setInterfaceDown(mInterfaceName); 5183 mNwService.clearInterfaceAddresses(mInterfaceName); 5184 5185 // Set privacy extensions 5186 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5187 5188 // IPv6 is enabled only as long as access point is connected since: 5189 // - IPv6 addresses and routes stick around after disconnection 5190 // - kernel is unaware when connected and fails to start IPv6 negotiation 5191 // - kernel can start autoconfiguration when 802.1x is not complete 5192 mNwService.disableIpv6(mInterfaceName); 5193 } catch (RemoteException re) { 5194 loge("Unable to change interface settings: " + re); 5195 } catch (IllegalStateException ie) { 5196 loge("Unable to change interface settings: " + ie); 5197 } 5198 5199 /* Stop a running supplicant after a runtime restart 5200 * Avoids issues with drivers that do not handle interface down 5201 * on a running supplicant properly. 5202 */ 5203 mWifiMonitor.killSupplicant(mP2pSupported); 5204 if(mWifiNative.startSupplicant(mP2pSupported)) { 5205 setWifiState(WIFI_STATE_ENABLING); 5206 if (DBG) log("Supplicant start successful"); 5207 mWifiMonitor.startMonitoring(); 5208 transitionTo(mSupplicantStartingState); 5209 } else { 5210 loge("Failed to start supplicant!"); 5211 } 5212 } else { 5213 loge("Failed to load driver"); 5214 } 5215 break; 5216 case CMD_START_AP: 5217 if (mWifiNative.loadDriver()) { 5218 setWifiApState(WIFI_AP_STATE_ENABLING); 5219 transitionTo(mSoftApStartingState); 5220 } else { 5221 loge("Failed to load driver for softap"); 5222 } 5223 break; 5224 default: 5225 return NOT_HANDLED; 5226 } 5227 return HANDLED; 5228 } 5229 } 5230 5231 class SupplicantStartingState extends State { 5232 private void initializeWpsDetails() { 5233 String detail; 5234 detail = SystemProperties.get("ro.product.name", ""); 5235 if (!mWifiNative.setDeviceName(detail)) { 5236 loge("Failed to set device name " + detail); 5237 } 5238 detail = SystemProperties.get("ro.product.manufacturer", ""); 5239 if (!mWifiNative.setManufacturer(detail)) { 5240 loge("Failed to set manufacturer " + detail); 5241 } 5242 detail = SystemProperties.get("ro.product.model", ""); 5243 if (!mWifiNative.setModelName(detail)) { 5244 loge("Failed to set model name " + detail); 5245 } 5246 detail = SystemProperties.get("ro.product.model", ""); 5247 if (!mWifiNative.setModelNumber(detail)) { 5248 loge("Failed to set model number " + detail); 5249 } 5250 detail = SystemProperties.get("ro.serialno", ""); 5251 if (!mWifiNative.setSerialNumber(detail)) { 5252 loge("Failed to set serial number " + detail); 5253 } 5254 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5255 loge("Failed to set WPS config methods"); 5256 } 5257 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5258 loge("Failed to set primary device type " + mPrimaryDeviceType); 5259 } 5260 } 5261 5262 @Override 5263 public boolean processMessage(Message message) { 5264 logStateAndMessage(message, getClass().getSimpleName()); 5265 5266 switch(message.what) { 5267 case WifiMonitor.SUP_CONNECTION_EVENT: 5268 if (DBG) log("Supplicant connection established"); 5269 setWifiState(WIFI_STATE_ENABLED); 5270 mSupplicantRestartCount = 0; 5271 /* Reset the supplicant state to indicate the supplicant 5272 * state is not known at this time */ 5273 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5274 /* Initialize data structures */ 5275 mLastBssid = null; 5276 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5277 mLastSignalLevel = -1; 5278 5279 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5280 mWifiNative.enableSaveConfig(); 5281 mWifiConfigStore.loadAndEnableAllNetworks(); 5282 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5283 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5284 } 5285 if (mWifiConfigStore.associatedPartialScanPeriodMilli.get() < 0) { 5286 mWifiConfigStore.associatedPartialScanPeriodMilli.set(0); 5287 } 5288 initializeWpsDetails(); 5289 5290 sendSupplicantConnectionChangedBroadcast(true); 5291 transitionTo(mDriverStartedState); 5292 break; 5293 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5294 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5295 loge("Failed to setup control channel, restart supplicant"); 5296 mWifiMonitor.killSupplicant(mP2pSupported); 5297 transitionTo(mInitialState); 5298 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5299 } else { 5300 loge("Failed " + mSupplicantRestartCount + 5301 " times to start supplicant, unload driver"); 5302 mSupplicantRestartCount = 0; 5303 setWifiState(WIFI_STATE_UNKNOWN); 5304 transitionTo(mInitialState); 5305 } 5306 break; 5307 case CMD_START_SUPPLICANT: 5308 case CMD_STOP_SUPPLICANT: 5309 case CMD_START_AP: 5310 case CMD_STOP_AP: 5311 case CMD_START_DRIVER: 5312 case CMD_STOP_DRIVER: 5313 case CMD_SET_OPERATIONAL_MODE: 5314 case CMD_SET_COUNTRY_CODE: 5315 case CMD_SET_FREQUENCY_BAND: 5316 case CMD_START_PACKET_FILTERING: 5317 case CMD_STOP_PACKET_FILTERING: 5318 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5319 deferMessage(message); 5320 break; 5321 default: 5322 return NOT_HANDLED; 5323 } 5324 return HANDLED; 5325 } 5326 } 5327 5328 class SupplicantStartedState extends State { 5329 @Override 5330 public void enter() { 5331 /* Wifi is available as long as we have a connection to supplicant */ 5332 mNetworkInfo.setIsAvailable(true); 5333 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5334 5335 int defaultInterval = mContext.getResources().getInteger( 5336 R.integer.config_wifi_supplicant_scan_interval); 5337 5338 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5339 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5340 defaultInterval); 5341 5342 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5343 mWifiNative.setExternalSim(true); 5344 5345 /* turn on use of DFS channels */ 5346 WifiNative.setDfsFlag(true); 5347 5348 /* set country code */ 5349 setCountryCode(); 5350 5351 setRandomMacOui(); 5352 mWifiNative.enableAutoConnect(false); 5353 } 5354 5355 @Override 5356 public boolean processMessage(Message message) { 5357 logStateAndMessage(message, getClass().getSimpleName()); 5358 5359 switch(message.what) { 5360 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5361 if (mP2pSupported) { 5362 transitionTo(mWaitForP2pDisableState); 5363 } else { 5364 transitionTo(mSupplicantStoppingState); 5365 } 5366 break; 5367 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5368 loge("Connection lost, restart supplicant"); 5369 handleSupplicantConnectionLoss(); 5370 handleNetworkDisconnect(); 5371 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5372 if (mP2pSupported) { 5373 transitionTo(mWaitForP2pDisableState); 5374 } else { 5375 transitionTo(mInitialState); 5376 } 5377 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5378 break; 5379 case WifiMonitor.SCAN_RESULTS_EVENT: 5380 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5381 closeRadioScanStats(); 5382 noteScanEnd(); 5383 setScanResults(); 5384 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5385 /* Just updated results from full scan, let apps know about this */ 5386 sendScanResultsAvailableBroadcast(); 5387 } 5388 mSendScanResultsBroadcast = false; 5389 mIsScanOngoing = false; 5390 mIsFullScanOngoing = false; 5391 if (mBufferedScanMsg.size() > 0) 5392 sendMessage(mBufferedScanMsg.remove()); 5393 break; 5394 case CMD_PING_SUPPLICANT: 5395 boolean ok = mWifiNative.ping(); 5396 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5397 break; 5398 case CMD_GET_CAPABILITY_FREQ: 5399 String freqs = mWifiNative.getFreqCapability(); 5400 replyToMessage(message, message.what, freqs); 5401 break; 5402 case CMD_START_AP: 5403 /* Cannot start soft AP while in client mode */ 5404 loge("Failed to start soft AP with a running supplicant"); 5405 setWifiApState(WIFI_AP_STATE_FAILED); 5406 break; 5407 case CMD_SET_OPERATIONAL_MODE: 5408 mOperationalMode = message.arg1; 5409 mWifiConfigStore. 5410 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5411 break; 5412 case CMD_TARGET_BSSID: 5413 // Trying to associate to this BSSID 5414 if (message.obj != null) { 5415 mTargetRoamBSSID = (String) message.obj; 5416 } 5417 break; 5418 case CMD_GET_LINK_LAYER_STATS: 5419 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5420 if (stats == null) { 5421 // When firmware doesnt support link layer stats, return an empty object 5422 stats = new WifiLinkLayerStats(); 5423 } 5424 replyToMessage(message, message.what, stats); 5425 break; 5426 case CMD_SET_COUNTRY_CODE: 5427 String country = (String) message.obj; 5428 5429 final boolean persist = (message.arg2 == 1); 5430 final int sequence = message.arg1; 5431 5432 if (sequence != mCountryCodeSequence.get()) { 5433 if (DBG) log("set country code ignored due to sequnce num"); 5434 break; 5435 } 5436 if (DBG) log("set country code " + country); 5437 country = country.toUpperCase(Locale.ROOT); 5438 5439 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5440 if (mWifiNative.setCountryCode(country)) { 5441 mDriverSetCountryCode = country; 5442 } else { 5443 loge("Failed to set country code " + country); 5444 } 5445 } 5446 5447 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5448 break; 5449 default: 5450 return NOT_HANDLED; 5451 } 5452 return HANDLED; 5453 } 5454 5455 @Override 5456 public void exit() { 5457 mNetworkInfo.setIsAvailable(false); 5458 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5459 } 5460 } 5461 5462 class SupplicantStoppingState extends State { 5463 @Override 5464 public void enter() { 5465 /* Send any reset commands to supplicant before shutting it down */ 5466 handleNetworkDisconnect(); 5467 if (mDhcpStateMachine != null) { 5468 mDhcpStateMachine.doQuit(); 5469 } 5470 5471 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5472 if (suppState == null) suppState = "unknown"; 5473 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5474 if (p2pSuppState == null) p2pSuppState = "unknown"; 5475 5476 loge("SupplicantStoppingState: stopSupplicant " 5477 + " init.svc.wpa_supplicant=" + suppState 5478 + " init.svc.p2p_supplicant=" + p2pSuppState); 5479 mWifiMonitor.stopSupplicant(); 5480 5481 /* Send ourselves a delayed message to indicate failure after a wait time */ 5482 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5483 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5484 setWifiState(WIFI_STATE_DISABLING); 5485 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5486 } 5487 @Override 5488 public boolean processMessage(Message message) { 5489 logStateAndMessage(message, getClass().getSimpleName()); 5490 5491 switch(message.what) { 5492 case WifiMonitor.SUP_CONNECTION_EVENT: 5493 loge("Supplicant connection received while stopping"); 5494 break; 5495 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5496 if (DBG) log("Supplicant connection lost"); 5497 handleSupplicantConnectionLoss(); 5498 transitionTo(mInitialState); 5499 break; 5500 case CMD_STOP_SUPPLICANT_FAILED: 5501 if (message.arg1 == mSupplicantStopFailureToken) { 5502 loge("Timed out on a supplicant stop, kill and proceed"); 5503 handleSupplicantConnectionLoss(); 5504 transitionTo(mInitialState); 5505 } 5506 break; 5507 case CMD_START_SUPPLICANT: 5508 case CMD_STOP_SUPPLICANT: 5509 case CMD_START_AP: 5510 case CMD_STOP_AP: 5511 case CMD_START_DRIVER: 5512 case CMD_STOP_DRIVER: 5513 case CMD_SET_OPERATIONAL_MODE: 5514 case CMD_SET_COUNTRY_CODE: 5515 case CMD_SET_FREQUENCY_BAND: 5516 case CMD_START_PACKET_FILTERING: 5517 case CMD_STOP_PACKET_FILTERING: 5518 deferMessage(message); 5519 break; 5520 default: 5521 return NOT_HANDLED; 5522 } 5523 return HANDLED; 5524 } 5525 } 5526 5527 class DriverStartingState extends State { 5528 private int mTries; 5529 @Override 5530 public void enter() { 5531 mTries = 1; 5532 /* Send ourselves a delayed message to start driver a second time */ 5533 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5534 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5535 } 5536 @Override 5537 public boolean processMessage(Message message) { 5538 logStateAndMessage(message, getClass().getSimpleName()); 5539 5540 switch(message.what) { 5541 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5542 SupplicantState state = handleSupplicantStateChange(message); 5543 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5544 * a state that indicates driver has started, it is ready to 5545 * receive driver commands 5546 */ 5547 if (SupplicantState.isDriverActive(state)) { 5548 transitionTo(mDriverStartedState); 5549 } 5550 break; 5551 case CMD_DRIVER_START_TIMED_OUT: 5552 if (message.arg1 == mDriverStartToken) { 5553 if (mTries >= 2) { 5554 loge("Failed to start driver after " + mTries); 5555 transitionTo(mDriverStoppedState); 5556 } else { 5557 loge("Driver start failed, retrying"); 5558 mWakeLock.acquire(); 5559 mWifiNative.startDriver(); 5560 mWakeLock.release(); 5561 5562 ++mTries; 5563 /* Send ourselves a delayed message to start driver again */ 5564 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5565 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5566 } 5567 } 5568 break; 5569 /* Queue driver commands & connection events */ 5570 case CMD_START_DRIVER: 5571 case CMD_STOP_DRIVER: 5572 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5573 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5574 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5575 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5576 case WifiMonitor.WPS_OVERLAP_EVENT: 5577 case CMD_SET_COUNTRY_CODE: 5578 case CMD_SET_FREQUENCY_BAND: 5579 case CMD_START_PACKET_FILTERING: 5580 case CMD_STOP_PACKET_FILTERING: 5581 case CMD_START_SCAN: 5582 case CMD_DISCONNECT: 5583 case CMD_REASSOCIATE: 5584 case CMD_RECONNECT: 5585 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5586 deferMessage(message); 5587 break; 5588 case WifiMonitor.SCAN_RESULTS_EVENT: 5589 // Loose scan results obtained in Driver Starting state, they can only confuse 5590 // the state machine 5591 break; 5592 default: 5593 return NOT_HANDLED; 5594 } 5595 return HANDLED; 5596 } 5597 } 5598 5599 class DriverStartedState extends State { 5600 @Override 5601 public void enter() { 5602 5603 if (PDBG) { 5604 loge("DriverStartedState enter"); 5605 } 5606 mIsRunning = true; 5607 mInDelayedStop = false; 5608 mDelayedStopCounter++; 5609 updateBatteryWorkSource(null); 5610 /** 5611 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5612 * When this mode is on, some of the low-level scan parameters used by the 5613 * driver are changed to reduce interference with bluetooth 5614 */ 5615 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5616 /* set frequency band of operation */ 5617 setFrequencyBand(); 5618 /* initialize network state */ 5619 setNetworkDetailedState(DetailedState.DISCONNECTED); 5620 5621 /* Remove any filtering on Multicast v6 at start */ 5622 mWifiNative.stopFilteringMulticastV6Packets(); 5623 5624 /* Reset Multicast v4 filtering state */ 5625 if (mFilteringMulticastV4Packets.get()) { 5626 mWifiNative.startFilteringMulticastV4Packets(); 5627 } else { 5628 mWifiNative.stopFilteringMulticastV4Packets(); 5629 } 5630 5631 mDhcpActive = false; 5632 5633 startBatchedScan(); 5634 5635 if (mOperationalMode != CONNECT_MODE) { 5636 mWifiNative.disconnect(); 5637 mWifiConfigStore.disableAllNetworks(); 5638 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5639 setWifiState(WIFI_STATE_DISABLED); 5640 } 5641 transitionTo(mScanModeState); 5642 } else { 5643 5644 // Status pulls in the current supplicant state and network connection state 5645 // events over the monitor connection. This helps framework sync up with 5646 // current supplicant state 5647 // TODO: actually check th supplicant status string and make sure the supplicant 5648 // is in disconnecte4d state. 5649 mWifiNative.status(); 5650 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5651 transitionTo(mDisconnectedState); 5652 } 5653 5654 // We may have missed screen update at boot 5655 if (mScreenBroadcastReceived.get() == false) { 5656 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5657 Context.POWER_SERVICE); 5658 handleScreenStateChanged(powerManager.isScreenOn(), 5659 /* startBackgroundScanIfNeeded = */ false); 5660 } else { 5661 // Set the right suspend mode settings 5662 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5663 && mUserWantsSuspendOpt.get()); 5664 } 5665 mWifiNative.setPowerSave(true); 5666 5667 if (mP2pSupported) { 5668 if (mOperationalMode == CONNECT_MODE) { 5669 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5670 } else { 5671 // P2P statemachine starts in disabled state, and is not enabled until 5672 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5673 // keep it disabled. 5674 } 5675 } 5676 5677 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5678 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5679 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5680 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5681 5682 if (PDBG) { 5683 loge("Driverstarted State enter done"); 5684 } 5685 } 5686 5687 @Override 5688 public boolean processMessage(Message message) { 5689 logStateAndMessage(message, getClass().getSimpleName()); 5690 5691 switch(message.what) { 5692 case CMD_START_SCAN: 5693 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5694 break; 5695 case CMD_SET_BATCHED_SCAN: 5696 if (recordBatchedScanSettings(message.arg1, message.arg2, 5697 (Bundle) message.obj)) { 5698 if (mBatchedScanSettings != null) { 5699 startBatchedScan(); 5700 } else { 5701 stopBatchedScan(); 5702 } 5703 } 5704 break; 5705 case CMD_SET_FREQUENCY_BAND: 5706 int band = message.arg1; 5707 if (DBG) log("set frequency band " + band); 5708 if (mWifiNative.setBand(band)) { 5709 5710 if (PDBG) loge("did set frequency band " + band); 5711 5712 mFrequencyBand.set(band); 5713 // Flush old data - like scan results 5714 mWifiNative.bssFlush(); 5715 // Fetch the latest scan results when frequency band is set 5716 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5717 5718 if (PDBG) loge("done set frequency band " + band); 5719 5720 } else { 5721 loge("Failed to set frequency band " + band); 5722 } 5723 break; 5724 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5725 mBluetoothConnectionActive = (message.arg1 != 5726 BluetoothAdapter.STATE_DISCONNECTED); 5727 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5728 break; 5729 case CMD_STOP_DRIVER: 5730 int mode = message.arg1; 5731 5732 /* Already doing a delayed stop */ 5733 if (mInDelayedStop) { 5734 if (DBG) log("Already in delayed stop"); 5735 break; 5736 } 5737 /* disconnect right now, but leave the driver running for a bit */ 5738 mWifiConfigStore.disableAllNetworks(); 5739 5740 mInDelayedStop = true; 5741 mDelayedStopCounter++; 5742 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5743 5744 /* send regular delayed shut down */ 5745 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5746 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5747 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5748 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5749 DRIVER_STOP_REQUEST, driverStopIntent, 5750 PendingIntent.FLAG_UPDATE_CURRENT); 5751 5752 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5753 + mDriverStopDelayMs, mDriverStopIntent); 5754 break; 5755 case CMD_START_DRIVER: 5756 if (mInDelayedStop) { 5757 mInDelayedStop = false; 5758 mDelayedStopCounter++; 5759 mAlarmManager.cancel(mDriverStopIntent); 5760 if (DBG) log("Delayed stop ignored due to start"); 5761 if (mOperationalMode == CONNECT_MODE) { 5762 mWifiConfigStore.enableAllNetworks(); 5763 } 5764 } 5765 break; 5766 case CMD_DELAYED_STOP_DRIVER: 5767 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5768 if (message.arg1 != mDelayedStopCounter) break; 5769 if (getCurrentState() != mDisconnectedState) { 5770 mWifiNative.disconnect(); 5771 handleNetworkDisconnect(); 5772 } 5773 mWakeLock.acquire(); 5774 mWifiNative.stopDriver(); 5775 mWakeLock.release(); 5776 if (mP2pSupported) { 5777 transitionTo(mWaitForP2pDisableState); 5778 } else { 5779 transitionTo(mDriverStoppingState); 5780 } 5781 break; 5782 case CMD_START_PACKET_FILTERING: 5783 if (message.arg1 == MULTICAST_V6) { 5784 mWifiNative.startFilteringMulticastV6Packets(); 5785 } else if (message.arg1 == MULTICAST_V4) { 5786 mWifiNative.startFilteringMulticastV4Packets(); 5787 } else { 5788 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5789 } 5790 break; 5791 case CMD_STOP_PACKET_FILTERING: 5792 if (message.arg1 == MULTICAST_V6) { 5793 mWifiNative.stopFilteringMulticastV6Packets(); 5794 } else if (message.arg1 == MULTICAST_V4) { 5795 mWifiNative.stopFilteringMulticastV4Packets(); 5796 } else { 5797 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5798 } 5799 break; 5800 case CMD_SET_SUSPEND_OPT_ENABLED: 5801 if (message.arg1 == 1) { 5802 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5803 mSuspendWakeLock.release(); 5804 } else { 5805 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5806 } 5807 break; 5808 case CMD_SET_HIGH_PERF_MODE: 5809 if (message.arg1 == 1) { 5810 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5811 } else { 5812 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5813 } 5814 break; 5815 case CMD_ENABLE_TDLS: 5816 if (message.obj != null) { 5817 String remoteAddress = (String) message.obj; 5818 boolean enable = (message.arg1 == 1); 5819 mWifiNative.startTdls(remoteAddress, enable); 5820 } 5821 break; 5822 default: 5823 return NOT_HANDLED; 5824 } 5825 return HANDLED; 5826 } 5827 @Override 5828 public void exit() { 5829 mIsRunning = false; 5830 updateBatteryWorkSource(null); 5831 mScanResults = new ArrayList<>(); 5832 5833 stopBatchedScan(); 5834 5835 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5836 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5837 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5838 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5839 noteScanEnd(); // wrap up any pending request. 5840 mBufferedScanMsg.clear(); 5841 } 5842 } 5843 5844 class WaitForP2pDisableState extends State { 5845 private State mTransitionToState; 5846 @Override 5847 public void enter() { 5848 switch (getCurrentMessage().what) { 5849 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5850 mTransitionToState = mInitialState; 5851 break; 5852 case CMD_DELAYED_STOP_DRIVER: 5853 mTransitionToState = mDriverStoppingState; 5854 break; 5855 case CMD_STOP_SUPPLICANT: 5856 mTransitionToState = mSupplicantStoppingState; 5857 break; 5858 default: 5859 mTransitionToState = mDriverStoppingState; 5860 break; 5861 } 5862 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5863 } 5864 @Override 5865 public boolean processMessage(Message message) { 5866 logStateAndMessage(message, getClass().getSimpleName()); 5867 5868 switch(message.what) { 5869 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5870 transitionTo(mTransitionToState); 5871 break; 5872 /* Defer wifi start/shut and driver commands */ 5873 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5874 case CMD_START_SUPPLICANT: 5875 case CMD_STOP_SUPPLICANT: 5876 case CMD_START_AP: 5877 case CMD_STOP_AP: 5878 case CMD_START_DRIVER: 5879 case CMD_STOP_DRIVER: 5880 case CMD_SET_OPERATIONAL_MODE: 5881 case CMD_SET_COUNTRY_CODE: 5882 case CMD_SET_FREQUENCY_BAND: 5883 case CMD_START_PACKET_FILTERING: 5884 case CMD_STOP_PACKET_FILTERING: 5885 case CMD_START_SCAN: 5886 case CMD_DISCONNECT: 5887 case CMD_REASSOCIATE: 5888 case CMD_RECONNECT: 5889 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5890 deferMessage(message); 5891 break; 5892 default: 5893 return NOT_HANDLED; 5894 } 5895 return HANDLED; 5896 } 5897 } 5898 5899 class DriverStoppingState extends State { 5900 @Override 5901 public boolean processMessage(Message message) { 5902 logStateAndMessage(message, getClass().getSimpleName()); 5903 5904 switch(message.what) { 5905 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5906 SupplicantState state = handleSupplicantStateChange(message); 5907 if (state == SupplicantState.INTERFACE_DISABLED) { 5908 transitionTo(mDriverStoppedState); 5909 } 5910 break; 5911 /* Queue driver commands */ 5912 case CMD_START_DRIVER: 5913 case CMD_STOP_DRIVER: 5914 case CMD_SET_COUNTRY_CODE: 5915 case CMD_SET_FREQUENCY_BAND: 5916 case CMD_START_PACKET_FILTERING: 5917 case CMD_STOP_PACKET_FILTERING: 5918 case CMD_START_SCAN: 5919 case CMD_DISCONNECT: 5920 case CMD_REASSOCIATE: 5921 case CMD_RECONNECT: 5922 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5923 deferMessage(message); 5924 break; 5925 default: 5926 return NOT_HANDLED; 5927 } 5928 return HANDLED; 5929 } 5930 } 5931 5932 class DriverStoppedState extends State { 5933 @Override 5934 public boolean processMessage(Message message) { 5935 logStateAndMessage(message, getClass().getSimpleName()); 5936 switch (message.what) { 5937 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5938 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5939 SupplicantState state = stateChangeResult.state; 5940 // A WEXT bug means that we can be back to driver started state 5941 // unexpectedly 5942 if (SupplicantState.isDriverActive(state)) { 5943 transitionTo(mDriverStartedState); 5944 } 5945 break; 5946 case CMD_START_DRIVER: 5947 mWakeLock.acquire(); 5948 mWifiNative.startDriver(); 5949 mWakeLock.release(); 5950 transitionTo(mDriverStartingState); 5951 break; 5952 default: 5953 return NOT_HANDLED; 5954 } 5955 return HANDLED; 5956 } 5957 } 5958 5959 class ScanModeState extends State { 5960 private int mLastOperationMode; 5961 @Override 5962 public void enter() { 5963 mLastOperationMode = mOperationalMode; 5964 } 5965 @Override 5966 public boolean processMessage(Message message) { 5967 logStateAndMessage(message, getClass().getSimpleName()); 5968 5969 switch(message.what) { 5970 case CMD_SET_OPERATIONAL_MODE: 5971 if (message.arg1 == CONNECT_MODE) { 5972 5973 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5974 setWifiState(WIFI_STATE_ENABLED); 5975 // Load and re-enable networks when going back to enabled state 5976 // This is essential for networks to show up after restore 5977 mWifiConfigStore.loadAndEnableAllNetworks(); 5978 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5979 } else { 5980 mWifiConfigStore.enableAllNetworks(); 5981 } 5982 5983 // Try autojoining with recent network already present in the cache 5984 // If none are found then trigger a scan which will trigger autojoin 5985 // upon reception of scan results event 5986 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5987 startScan(ENABLE_WIFI, 0, null, null); 5988 } 5989 5990 // Loose last selection choice since user toggled WiFi 5991 mWifiConfigStore. 5992 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5993 5994 mOperationalMode = CONNECT_MODE; 5995 transitionTo(mDisconnectedState); 5996 } else { 5997 // Nothing to do 5998 return HANDLED; 5999 } 6000 break; 6001 // Handle scan. All the connection related commands are 6002 // handled only in ConnectModeState 6003 case CMD_START_SCAN: 6004 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6005 break; 6006 default: 6007 return NOT_HANDLED; 6008 } 6009 return HANDLED; 6010 } 6011 } 6012 6013 6014 String smToString(Message message) { 6015 return smToString(message.what); 6016 } 6017 6018 String smToString(int what) { 6019 String s = "unknown"; 6020 switch (what) { 6021 case WifiMonitor.DRIVER_HUNG_EVENT: 6022 s = "DRIVER_HUNG_EVENT"; 6023 break; 6024 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6025 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6026 break; 6027 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6028 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6029 break; 6030 case CMD_SET_FREQUENCY_BAND: 6031 s = "CMD_SET_FREQUENCY_BAND"; 6032 break; 6033 case CMD_DELAYED_NETWORK_DISCONNECT: 6034 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6035 break; 6036 case CMD_TEST_NETWORK_DISCONNECT: 6037 s = "CMD_TEST_NETWORK_DISCONNECT"; 6038 break; 6039 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6040 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6041 break; 6042 case CMD_DISABLE_EPHEMERAL_NETWORK: 6043 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6044 break; 6045 case CMD_START_DRIVER: 6046 s = "CMD_START_DRIVER"; 6047 break; 6048 case CMD_STOP_DRIVER: 6049 s = "CMD_STOP_DRIVER"; 6050 break; 6051 case CMD_STOP_SUPPLICANT: 6052 s = "CMD_STOP_SUPPLICANT"; 6053 break; 6054 case CMD_STOP_SUPPLICANT_FAILED: 6055 s = "CMD_STOP_SUPPLICANT_FAILED"; 6056 break; 6057 case CMD_START_SUPPLICANT: 6058 s = "CMD_START_SUPPLICANT"; 6059 break; 6060 case CMD_REQUEST_AP_CONFIG: 6061 s = "CMD_REQUEST_AP_CONFIG"; 6062 break; 6063 case CMD_RESPONSE_AP_CONFIG: 6064 s = "CMD_RESPONSE_AP_CONFIG"; 6065 break; 6066 case CMD_TETHER_STATE_CHANGE: 6067 s = "CMD_TETHER_STATE_CHANGE"; 6068 break; 6069 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6070 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6071 break; 6072 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6073 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6074 break; 6075 case CMD_ADD_OR_UPDATE_NETWORK: 6076 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6077 break; 6078 case CMD_REMOVE_NETWORK: 6079 s = "CMD_REMOVE_NETWORK"; 6080 break; 6081 case CMD_ENABLE_NETWORK: 6082 s = "CMD_ENABLE_NETWORK"; 6083 break; 6084 case CMD_ENABLE_ALL_NETWORKS: 6085 s = "CMD_ENABLE_ALL_NETWORKS"; 6086 break; 6087 case CMD_AUTO_CONNECT: 6088 s = "CMD_AUTO_CONNECT"; 6089 break; 6090 case CMD_AUTO_ROAM: 6091 s = "CMD_AUTO_ROAM"; 6092 break; 6093 case CMD_AUTO_SAVE_NETWORK: 6094 s = "CMD_AUTO_SAVE_NETWORK"; 6095 break; 6096 case CMD_BOOT_COMPLETED: 6097 s = "CMD_BOOT_COMPLETED"; 6098 break; 6099 case DhcpStateMachine.CMD_START_DHCP: 6100 s = "CMD_START_DHCP"; 6101 break; 6102 case DhcpStateMachine.CMD_STOP_DHCP: 6103 s = "CMD_STOP_DHCP"; 6104 break; 6105 case DhcpStateMachine.CMD_RENEW_DHCP: 6106 s = "CMD_RENEW_DHCP"; 6107 break; 6108 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6109 s = "CMD_PRE_DHCP_ACTION"; 6110 break; 6111 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6112 s = "CMD_POST_DHCP_ACTION"; 6113 break; 6114 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6115 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6116 break; 6117 case DhcpStateMachine.CMD_ON_QUIT: 6118 s = "CMD_ON_QUIT"; 6119 break; 6120 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6121 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6122 break; 6123 case WifiManager.DISABLE_NETWORK: 6124 s = "WifiManager.DISABLE_NETWORK"; 6125 break; 6126 case CMD_BLACKLIST_NETWORK: 6127 s = "CMD_BLACKLIST_NETWORK"; 6128 break; 6129 case CMD_CLEAR_BLACKLIST: 6130 s = "CMD_CLEAR_BLACKLIST"; 6131 break; 6132 case CMD_SAVE_CONFIG: 6133 s = "CMD_SAVE_CONFIG"; 6134 break; 6135 case CMD_GET_CONFIGURED_NETWORKS: 6136 s = "CMD_GET_CONFIGURED_NETWORKS"; 6137 break; 6138 case CMD_GET_SUPPORTED_FEATURES: 6139 s = "CMD_GET_SUPPORTED_FEATURES"; 6140 break; 6141 case CMD_UNWANTED_NETWORK: 6142 s = "CMD_UNWANTED_NETWORK"; 6143 break; 6144 case CMD_NETWORK_STATUS: 6145 s = "CMD_NETWORK_STATUS"; 6146 break; 6147 case CMD_GET_LINK_LAYER_STATS: 6148 s = "CMD_GET_LINK_LAYER_STATS"; 6149 break; 6150 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6151 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6152 break; 6153 case CMD_DISCONNECT: 6154 s = "CMD_DISCONNECT"; 6155 break; 6156 case CMD_RECONNECT: 6157 s = "CMD_RECONNECT"; 6158 break; 6159 case CMD_REASSOCIATE: 6160 s = "CMD_REASSOCIATE"; 6161 break; 6162 case CMD_GET_CONNECTION_STATISTICS: 6163 s = "CMD_GET_CONNECTION_STATISTICS"; 6164 break; 6165 case CMD_SET_HIGH_PERF_MODE: 6166 s = "CMD_SET_HIGH_PERF_MODE"; 6167 break; 6168 case CMD_SET_COUNTRY_CODE: 6169 s = "CMD_SET_COUNTRY_CODE"; 6170 break; 6171 case CMD_ENABLE_RSSI_POLL: 6172 s = "CMD_ENABLE_RSSI_POLL"; 6173 break; 6174 case CMD_RSSI_POLL: 6175 s = "CMD_RSSI_POLL"; 6176 break; 6177 case CMD_START_PACKET_FILTERING: 6178 s = "CMD_START_PACKET_FILTERING"; 6179 break; 6180 case CMD_STOP_PACKET_FILTERING: 6181 s = "CMD_STOP_PACKET_FILTERING"; 6182 break; 6183 case CMD_SET_SUSPEND_OPT_ENABLED: 6184 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6185 break; 6186 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6187 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6188 break; 6189 case CMD_SET_BATCHED_SCAN: 6190 s = "CMD_SET_BATCHED_SCAN"; 6191 break; 6192 case CMD_START_NEXT_BATCHED_SCAN: 6193 s = "CMD_START_NEXT_BATCHED_SCAN"; 6194 break; 6195 case CMD_POLL_BATCHED_SCAN: 6196 s = "CMD_POLL_BATCHED_SCAN"; 6197 break; 6198 case CMD_UPDATE_LINKPROPERTIES: 6199 s = "CMD_UPDATE_LINKPROPERTIES"; 6200 break; 6201 case CMD_RELOAD_TLS_AND_RECONNECT: 6202 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6203 break; 6204 case WifiManager.CONNECT_NETWORK: 6205 s = "CONNECT_NETWORK"; 6206 break; 6207 case WifiManager.SAVE_NETWORK: 6208 s = "SAVE_NETWORK"; 6209 break; 6210 case WifiManager.FORGET_NETWORK: 6211 s = "FORGET_NETWORK"; 6212 break; 6213 case WifiMonitor.SUP_CONNECTION_EVENT: 6214 s = "SUP_CONNECTION_EVENT"; 6215 break; 6216 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6217 s = "SUP_DISCONNECTION_EVENT"; 6218 break; 6219 case WifiMonitor.SCAN_RESULTS_EVENT: 6220 s = "SCAN_RESULTS_EVENT"; 6221 break; 6222 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6223 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6224 break; 6225 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6226 s = "AUTHENTICATION_FAILURE_EVENT"; 6227 break; 6228 case WifiMonitor.SSID_TEMP_DISABLED: 6229 s = "SSID_TEMP_DISABLED"; 6230 break; 6231 case WifiMonitor.SSID_REENABLED: 6232 s = "SSID_REENABLED"; 6233 break; 6234 case WifiMonitor.WPS_SUCCESS_EVENT: 6235 s = "WPS_SUCCESS_EVENT"; 6236 break; 6237 case WifiMonitor.WPS_FAIL_EVENT: 6238 s = "WPS_FAIL_EVENT"; 6239 break; 6240 case WifiMonitor.SUP_REQUEST_IDENTITY: 6241 s = "SUP_REQUEST_IDENTITY"; 6242 break; 6243 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6244 s = "NETWORK_CONNECTION_EVENT"; 6245 break; 6246 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6247 s = "NETWORK_DISCONNECTION_EVENT"; 6248 break; 6249 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6250 s = "ASSOCIATION_REJECTION_EVENT"; 6251 break; 6252 case CMD_SET_OPERATIONAL_MODE: 6253 s = "CMD_SET_OPERATIONAL_MODE"; 6254 break; 6255 case CMD_START_SCAN: 6256 s = "CMD_START_SCAN"; 6257 break; 6258 case CMD_DISABLE_P2P_RSP: 6259 s = "CMD_DISABLE_P2P_RSP"; 6260 break; 6261 case CMD_DISABLE_P2P_REQ: 6262 s = "CMD_DISABLE_P2P_REQ"; 6263 break; 6264 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6265 s = "GOOD_LINK_DETECTED"; 6266 break; 6267 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6268 s = "POOR_LINK_DETECTED"; 6269 break; 6270 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6271 s = "GROUP_CREATING_TIMED_OUT"; 6272 break; 6273 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6274 s = "P2P_CONNECTION_CHANGED"; 6275 break; 6276 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6277 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6278 break; 6279 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6280 s = "P2P.SET_MIRACAST_MODE"; 6281 break; 6282 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6283 s = "P2P.BLOCK_DISCOVERY"; 6284 break; 6285 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6286 s = "P2P.SET_COUNTRY_CODE"; 6287 break; 6288 case WifiManager.CANCEL_WPS: 6289 s = "CANCEL_WPS"; 6290 break; 6291 case WifiManager.CANCEL_WPS_FAILED: 6292 s = "CANCEL_WPS_FAILED"; 6293 break; 6294 case WifiManager.CANCEL_WPS_SUCCEDED: 6295 s = "CANCEL_WPS_SUCCEDED"; 6296 break; 6297 case WifiManager.START_WPS: 6298 s = "START_WPS"; 6299 break; 6300 case WifiManager.START_WPS_SUCCEEDED: 6301 s = "START_WPS_SUCCEEDED"; 6302 break; 6303 case WifiManager.WPS_FAILED: 6304 s = "WPS_FAILED"; 6305 break; 6306 case WifiManager.WPS_COMPLETED: 6307 s = "WPS_COMPLETED"; 6308 break; 6309 case WifiManager.RSSI_PKTCNT_FETCH: 6310 s = "RSSI_PKTCNT_FETCH"; 6311 break; 6312 case CMD_IP_CONFIGURATION_LOST: 6313 s = "CMD_IP_CONFIGURATION_LOST"; 6314 break; 6315 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6316 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6317 break; 6318 case CMD_STATIC_IP_SUCCESS: 6319 s = "CMD_STATIC_IP_SUCCESSFUL"; 6320 break; 6321 case CMD_STATIC_IP_FAILURE: 6322 s = "CMD_STATIC_IP_FAILURE"; 6323 break; 6324 case DhcpStateMachine.DHCP_SUCCESS: 6325 s = "DHCP_SUCCESS"; 6326 break; 6327 case DhcpStateMachine.DHCP_FAILURE: 6328 s = "DHCP_FAILURE"; 6329 break; 6330 case CMD_TARGET_BSSID: 6331 s = "CMD_TARGET_BSSID"; 6332 break; 6333 case CMD_ASSOCIATED_BSSID: 6334 s = "CMD_ASSOCIATED_BSSID"; 6335 break; 6336 case CMD_REMOVE_APP_CONFIGURATIONS: 6337 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6338 break; 6339 case CMD_REMOVE_USER_CONFIGURATIONS: 6340 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6341 break; 6342 case CMD_ROAM_WATCHDOG_TIMER: 6343 s = "CMD_ROAM_WATCHDOG_TIMER"; 6344 break; 6345 case CMD_SCREEN_STATE_CHANGED: 6346 s = "CMD_SCREEN_STATE_CHANGED"; 6347 break; 6348 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6349 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6350 break; 6351 default: 6352 s = "what:" + Integer.toString(what); 6353 break; 6354 } 6355 return s; 6356 } 6357 6358 void registerConnected() { 6359 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6360 long now_ms = System.currentTimeMillis(); 6361 // We are switching away from this configuration, 6362 // hence record the time we were connected last 6363 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6364 if (config != null) { 6365 config.lastConnected = System.currentTimeMillis(); 6366 config.autoJoinBailedDueToLowRssi = false; 6367 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6368 config.numConnectionFailures = 0; 6369 config.numIpConfigFailures = 0; 6370 config.numAuthFailures = 0; 6371 config.numAssociation++; 6372 } 6373 mBadLinkspeedcount = 0; 6374 } 6375 } 6376 6377 void registerDisconnected() { 6378 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6379 long now_ms = System.currentTimeMillis(); 6380 // We are switching away from this configuration, 6381 // hence record the time we were connected last 6382 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6383 if (config != null) { 6384 config.lastDisconnected = System.currentTimeMillis(); 6385 if (config.ephemeral) { 6386 // Remove ephemeral WifiConfigurations from file 6387 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6388 } 6389 } 6390 } 6391 } 6392 6393 void noteWifiDisabledWhileAssociated() { 6394 // We got disabled by user while we were associated, make note of it 6395 int rssi = mWifiInfo.getRssi(); 6396 WifiConfiguration config = getCurrentWifiConfiguration(); 6397 if (getCurrentState() == mConnectedState 6398 && rssi != WifiInfo.INVALID_RSSI 6399 && config != null) { 6400 boolean is24GHz = mWifiInfo.is24GHz(); 6401 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6402 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6403 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6404 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6405 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6406 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6407 if (isBadRSSI) { 6408 // Take note that we got disabled while RSSI was Bad 6409 config.numUserTriggeredWifiDisableLowRSSI++; 6410 } else if (isLowRSSI) { 6411 // Take note that we got disabled while RSSI was Low 6412 config.numUserTriggeredWifiDisableBadRSSI++; 6413 } else if (!isHighRSSI) { 6414 // Take note that we got disabled while RSSI was Not high 6415 config.numUserTriggeredWifiDisableNotHighRSSI++; 6416 } 6417 } 6418 } 6419 6420 WifiConfiguration getCurrentWifiConfiguration() { 6421 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6422 return null; 6423 } 6424 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6425 } 6426 6427 ScanResult getCurrentScanResult() { 6428 WifiConfiguration config = getCurrentWifiConfiguration(); 6429 if (config == null) { 6430 return null; 6431 } 6432 String BSSID = mWifiInfo.getBSSID(); 6433 if (BSSID == null) { 6434 BSSID = mTargetRoamBSSID; 6435 } 6436 if (config.scanResultCache == null) { 6437 return null; 6438 } 6439 return config.scanResultCache.get(BSSID); 6440 } 6441 6442 String getCurrentBSSID() { 6443 if (linkDebouncing) { 6444 return null; 6445 } 6446 return mLastBssid; 6447 } 6448 6449 class ConnectModeState extends State { 6450 @Override 6451 public boolean processMessage(Message message) { 6452 WifiConfiguration config; 6453 int netId; 6454 boolean ok; 6455 boolean didDisconnect; 6456 String bssid; 6457 String ssid; 6458 NetworkUpdateResult result; 6459 logStateAndMessage(message, getClass().getSimpleName()); 6460 6461 switch (message.what) { 6462 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6463 didBlackListBSSID = false; 6464 bssid = (String) message.obj; 6465 if (bssid == null || TextUtils.isEmpty(bssid)) { 6466 // If BSSID is null, use the target roam BSSID 6467 bssid = mTargetRoamBSSID; 6468 } 6469 if (bssid != null) { 6470 // If we have a BSSID, tell configStore to black list it 6471 synchronized(mScanResultCache) { 6472 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6473 (mLastNetworkId, bssid, false); 6474 } 6475 } 6476 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6477 break; 6478 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6479 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6480 break; 6481 case WifiMonitor.SSID_TEMP_DISABLED: 6482 case WifiMonitor.SSID_REENABLED: 6483 String substr = (String) message.obj; 6484 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6485 "temp-disabled" : "re-enabled"; 6486 loge("ConnectModeState SSID state=" + en + " nid=" 6487 + Integer.toString(message.arg1) + " [" + substr + "]"); 6488 synchronized(mScanResultCache) { 6489 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6490 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6491 } 6492 break; 6493 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6494 SupplicantState state = handleSupplicantStateChange(message); 6495 // A driver/firmware hang can now put the interface in a down state. 6496 // We detect the interface going down and recover from it 6497 if (!SupplicantState.isDriverActive(state)) { 6498 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6499 handleNetworkDisconnect(); 6500 } 6501 log("Detected an interface down, restart driver"); 6502 transitionTo(mDriverStoppedState); 6503 sendMessage(CMD_START_DRIVER); 6504 break; 6505 } 6506 6507 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6508 // when authentication times out after a successful connection, 6509 // we can figure this from the supplicant state. If supplicant 6510 // state is DISCONNECTED, but the mNetworkInfo says we are not 6511 // disconnected, we need to handle a disconnection 6512 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6513 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6514 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6515 handleNetworkDisconnect(); 6516 transitionTo(mDisconnectedState); 6517 } 6518 break; 6519 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6520 if (message.arg1 == 1) { 6521 mWifiNative.disconnect(); 6522 mTemporarilyDisconnectWifi = true; 6523 } else { 6524 mWifiNative.reconnect(); 6525 mTemporarilyDisconnectWifi = false; 6526 } 6527 break; 6528 case CMD_ADD_OR_UPDATE_NETWORK: 6529 config = (WifiConfiguration) message.obj; 6530 6531 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6532 loge("Not authorized to update network " 6533 + " config=" + config.SSID 6534 + " cnid=" + config.networkId 6535 + " uid=" + message.sendingUid); 6536 replyToMessage(message, message.what, FAILURE); 6537 break; 6538 } 6539 6540 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6541 if (res < 0) { 6542 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6543 } else { 6544 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6545 if (curConfig != null && config != null) { 6546 if (curConfig.priority < config.priority 6547 && config.status == WifiConfiguration.Status.ENABLED) { 6548 // Interpret this as a connect attempt 6549 // Set the last selected configuration so as to allow the system to 6550 // stick the last user choice without persisting the choice 6551 mWifiConfigStore.setLastSelectedConfiguration(res); 6552 6553 // Remember time of last connection attempt 6554 lastConnectAttempt = System.currentTimeMillis(); 6555 6556 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6557 6558 // As a courtesy to the caller, trigger a scan now 6559 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6560 } 6561 } 6562 } 6563 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6564 break; 6565 case CMD_REMOVE_NETWORK: 6566 netId = message.arg1; 6567 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 6568 loge("Not authorized to remove network " 6569 + " cnid=" + netId 6570 + " uid=" + message.sendingUid); 6571 replyToMessage(message, message.what, FAILURE); 6572 break; 6573 } 6574 6575 ok = mWifiConfigStore.removeNetwork(message.arg1); 6576 if (!ok) { 6577 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6578 } 6579 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6580 break; 6581 case CMD_ENABLE_NETWORK: 6582 boolean others = message.arg2 == 1; 6583 // Tell autojoin the user did try to select to that network 6584 // However, do NOT persist the choice by bumping the priority of the network 6585 if (others) { 6586 mWifiAutoJoinController. 6587 updateConfigurationHistory(message.arg1, true, false); 6588 // Set the last selected configuration so as to allow the system to 6589 // stick the last user choice without persisting the choice 6590 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6591 6592 // Remember time of last connection attempt 6593 lastConnectAttempt = System.currentTimeMillis(); 6594 6595 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6596 } 6597 // Cancel auto roam requests 6598 autoRoamSetBSSID(message.arg1, "any"); 6599 6600 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6601 if (!ok) { 6602 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6603 } 6604 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6605 break; 6606 case CMD_ENABLE_ALL_NETWORKS: 6607 long time = android.os.SystemClock.elapsedRealtime(); 6608 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6609 mWifiConfigStore.enableAllNetworks(); 6610 mLastEnableAllNetworksTime = time; 6611 } 6612 break; 6613 case WifiManager.DISABLE_NETWORK: 6614 if (mWifiConfigStore.disableNetwork(message.arg1, 6615 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6616 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6617 } else { 6618 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6619 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6620 WifiManager.ERROR); 6621 } 6622 break; 6623 case CMD_DISABLE_EPHEMERAL_NETWORK: 6624 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6625 if (config != null) { 6626 if (config.networkId == mLastNetworkId) { 6627 // Disconnect and let autojoin reselect a new network 6628 sendMessage(CMD_DISCONNECT); 6629 } 6630 } 6631 break; 6632 case CMD_BLACKLIST_NETWORK: 6633 mWifiNative.addToBlacklist((String) message.obj); 6634 break; 6635 case CMD_CLEAR_BLACKLIST: 6636 mWifiNative.clearBlacklist(); 6637 break; 6638 case CMD_SAVE_CONFIG: 6639 ok = mWifiConfigStore.saveConfig(); 6640 6641 if (DBG) loge("wifistatemachine did save config " + ok); 6642 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6643 6644 // Inform the backup manager about a data change 6645 IBackupManager ibm = IBackupManager.Stub.asInterface( 6646 ServiceManager.getService(Context.BACKUP_SERVICE)); 6647 if (ibm != null) { 6648 try { 6649 ibm.dataChanged("com.android.providers.settings"); 6650 } catch (Exception e) { 6651 // Try again later 6652 } 6653 } 6654 break; 6655 case CMD_GET_CONFIGURED_NETWORKS: 6656 replyToMessage(message, message.what, 6657 mWifiConfigStore.getConfiguredNetworks()); 6658 break; 6659 case WifiMonitor.SUP_REQUEST_IDENTITY: 6660 int networkId = message.arg2; 6661 boolean identitySent = false; 6662 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 6663 6664 if (targetWificonfiguration != null 6665 && targetWificonfiguration.enterpriseConfig != null) { 6666 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 6667 } 6668 6669 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 6670 if (targetWificonfiguration != null 6671 && targetWificonfiguration.networkId == networkId 6672 && targetWificonfiguration.allowedKeyManagement 6673 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 6674 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 6675 || eapMethod == WifiEnterpriseConfig.Eap.AKA 6676 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 6677 TelephonyManager tm = (TelephonyManager) 6678 mContext.getSystemService(Context.TELEPHONY_SERVICE); 6679 if (tm != null) { 6680 String imsi = tm.getSubscriberId(); 6681 String mccMnc = ""; 6682 6683 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 6684 mccMnc = tm.getSimOperator(); 6685 6686 String identity = buildIdentity(eapMethod, imsi, mccMnc); 6687 6688 if (!identity.isEmpty()) { 6689 mWifiNative.simIdentityResponse(networkId, identity); 6690 identitySent = true; 6691 } 6692 } 6693 } 6694 if (!identitySent) { 6695 // Supplicant lacks credentials to connect to that network, hence black list 6696 ssid = (String) message.obj; 6697 if (targetWificonfiguration != null && ssid != null 6698 && targetWificonfiguration.SSID != null 6699 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6700 mWifiConfigStore.handleSSIDStateChange( 6701 targetWificonfiguration.networkId, false, 6702 "AUTH_FAILED no identity", null); 6703 } 6704 // Disconnect now, as we don't have any way to fullfill 6705 // the supplicant request. 6706 mWifiConfigStore.setLastSelectedConfiguration( 6707 WifiConfiguration.INVALID_NETWORK_ID); 6708 mWifiNative.disconnect(); 6709 } 6710 break; 6711 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6712 logd("Received SUP_REQUEST_SIM_AUTH"); 6713 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6714 if (requestData != null) { 6715 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6716 handleGsmAuthRequest(requestData); 6717 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 6718 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 6719 handle3GAuthRequest(requestData); 6720 } 6721 } else { 6722 loge("Invalid sim auth request"); 6723 } 6724 break; 6725 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6726 replyToMessage(message, message.what, 6727 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6728 break; 6729 /* Do a redundant disconnect without transition */ 6730 case CMD_DISCONNECT: 6731 mWifiConfigStore.setLastSelectedConfiguration 6732 (WifiConfiguration.INVALID_NETWORK_ID); 6733 mWifiNative.disconnect(); 6734 break; 6735 case CMD_RECONNECT: 6736 mWifiAutoJoinController.attemptAutoJoin(); 6737 break; 6738 case CMD_REASSOCIATE: 6739 lastConnectAttempt = System.currentTimeMillis(); 6740 mWifiNative.reassociate(); 6741 break; 6742 case CMD_RELOAD_TLS_AND_RECONNECT: 6743 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6744 logd("Reconnecting to give a chance to un-connected TLS networks"); 6745 mWifiNative.disconnect(); 6746 lastConnectAttempt = System.currentTimeMillis(); 6747 mWifiNative.reconnect(); 6748 } 6749 break; 6750 case CMD_AUTO_ROAM: 6751 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6752 return HANDLED; 6753 case CMD_AUTO_CONNECT: 6754 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6755 * associated status to the STATUS command but somehow-someplace still thinks 6756 * it is associated and thus will ignore select/reconnect command with 6757 * following message: 6758 * "Already associated with the selected network - do nothing" 6759 * 6760 * Hence, sends a disconnect to supplicant first. 6761 */ 6762 didDisconnect = false; 6763 if (getCurrentState() != mDisconnectedState) { 6764 /** Supplicant will ignore the reconnect if we are currently associated, 6765 * hence trigger a disconnect 6766 */ 6767 didDisconnect = true; 6768 mWifiNative.disconnect(); 6769 } 6770 6771 /* connect command coming from auto-join */ 6772 config = (WifiConfiguration) message.obj; 6773 netId = message.arg1; 6774 int roam = message.arg2; 6775 loge("CMD_AUTO_CONNECT sup state " 6776 + mSupplicantStateTracker.getSupplicantStateName() 6777 + " my state " + getCurrentState().getName() 6778 + " nid=" + Integer.toString(netId) 6779 + " roam=" + Integer.toString(roam)); 6780 if (config == null) { 6781 loge("AUTO_CONNECT and no config, bail out..."); 6782 break; 6783 } 6784 6785 /* Make sure we cancel any previous roam request */ 6786 autoRoamSetBSSID(netId, config.BSSID); 6787 6788 /* Save the network config */ 6789 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6790 + " nid=" + Integer.toString(netId)); 6791 result = mWifiConfigStore.saveNetwork(config, -1); 6792 netId = result.getNetworkId(); 6793 loge("CMD_AUTO_CONNECT did save config -> " 6794 + " nid=" + Integer.toString(netId)); 6795 6796 if (deferForUserInput(message, netId, false)) { 6797 break; 6798 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 6799 WifiConfiguration.USER_BANNED) { 6800 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6801 WifiManager.NOT_AUTHORIZED); 6802 break; 6803 } 6804 6805 // Make sure the network is enabled, since supplicant will not reenable it 6806 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6807 6808 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 6809 mWifiNative.reconnect()) { 6810 lastConnectAttempt = System.currentTimeMillis(); 6811 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6812 config = mWifiConfigStore.getWifiConfiguration(netId); 6813 if (config != null 6814 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6815 // If we autojoined a different config than the user selected one, 6816 // it means we could not see the last user selection, 6817 // or that the last user selection was faulty and ended up blacklisted 6818 // for some reason (in which case the user is notified with an error 6819 // message in the Wifi picker), and thus we managed to auto-join away 6820 // from the selected config. -> in that case we need to forget 6821 // the selection because we don't want to abruptly switch back to it. 6822 // 6823 // Note that the user selection is also forgotten after a period of time 6824 // during which the device has been disconnected. 6825 // The default value is 30 minutes : see the code path at bottom of 6826 // setScanResults() function. 6827 mWifiConfigStore. 6828 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6829 } 6830 mAutoRoaming = roam; 6831 if (isRoaming() || linkDebouncing) { 6832 transitionTo(mRoamingState); 6833 } else if (didDisconnect) { 6834 transitionTo(mDisconnectingState); 6835 } else { 6836 /* Already in disconnected state, nothing to change */ 6837 } 6838 } else { 6839 loge("Failed to connect config: " + config + " netId: " + netId); 6840 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6841 WifiManager.ERROR); 6842 break; 6843 } 6844 break; 6845 case CMD_REMOVE_APP_CONFIGURATIONS: 6846 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 6847 break; 6848 case CMD_REMOVE_USER_CONFIGURATIONS: 6849 mWifiConfigStore.removeNetworksForUser(message.arg1); 6850 break; 6851 case WifiManager.CONNECT_NETWORK: 6852 /** 6853 * The connect message can contain a network id passed as arg1 on message or 6854 * or a config passed as obj on message. 6855 * For a new network, a config is passed to create and connect. 6856 * For an existing network, a network id is passed 6857 */ 6858 netId = message.arg1; 6859 config = (WifiConfiguration) message.obj; 6860 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6861 boolean updatedExisting = false; 6862 6863 /* Save the network config */ 6864 if (config != null) { 6865 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6866 loge("Not authorized to update network " 6867 + " config=" + config.SSID 6868 + " cnid=" + config.networkId 6869 + " uid=" + message.sendingUid); 6870 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6871 WifiManager.NOT_AUTHORIZED); 6872 break; 6873 } 6874 6875 String configKey = config.configKey(true /* allowCached */); 6876 WifiConfiguration savedConfig = 6877 mWifiConfigStore.getWifiConfiguration(configKey); 6878 if (savedConfig != null) { 6879 // There is an existing config with this netId, but it wasn't exposed 6880 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6881 // getConfiguredNetworks). Remove those bits and update the config. 6882 config = savedConfig; 6883 loge("CONNECT_NETWORK updating existing config with id=" + 6884 config.networkId + " configKey=" + configKey); 6885 config.ephemeral = false; 6886 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6887 updatedExisting = true; 6888 } 6889 6890 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6891 netId = result.getNetworkId(); 6892 } 6893 config = mWifiConfigStore.getWifiConfiguration(netId); 6894 6895 if (config == null) { 6896 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 6897 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6898 + getCurrentState().getName()); 6899 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6900 WifiManager.ERROR); 6901 break; 6902 } else { 6903 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6904 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6905 + " config=" + config.SSID 6906 + " cnid=" + config.networkId 6907 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6908 + " my state " + getCurrentState().getName() 6909 + " uid = " + message.sendingUid 6910 + wasSkipped); 6911 } 6912 6913 autoRoamSetBSSID(netId, "any"); 6914 6915 if (message.sendingUid == Process.WIFI_UID 6916 || message.sendingUid == Process.SYSTEM_UID) { 6917 // As a sanity measure, clear the BSSID in the supplicant network block. 6918 // If system or Wifi Settings want to connect, they will not 6919 // specify the BSSID. 6920 // If an app however had added a BSSID to this configuration, and the BSSID 6921 // was wrong, Then we would forever fail to connect until that BSSID 6922 // is cleaned up. 6923 clearConfigBSSID(config, "CONNECT_NETWORK"); 6924 } 6925 6926 if (deferForUserInput(message, netId, true)) { 6927 break; 6928 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 6929 WifiConfiguration.USER_BANNED) { 6930 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6931 WifiManager.NOT_AUTHORIZED); 6932 break; 6933 } 6934 6935 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6936 6937 /* Tell autojoin the user did try to connect to that network if from settings */ 6938 boolean persist = 6939 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 6940 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 6941 6942 mWifiConfigStore.setLastSelectedConfiguration(netId); 6943 6944 didDisconnect = false; 6945 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6946 && mLastNetworkId != netId) { 6947 /** Supplicant will ignore the reconnect if we are currently associated, 6948 * hence trigger a disconnect 6949 */ 6950 didDisconnect = true; 6951 mWifiNative.disconnect(); 6952 } 6953 6954 // Make sure the network is enabled, since supplicant will not reenable it 6955 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6956 6957 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true) && 6958 mWifiNative.reconnect()) { 6959 lastConnectAttempt = System.currentTimeMillis(); 6960 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6961 6962 /* The state tracker handles enabling networks upon completion/failure */ 6963 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6964 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6965 if (didDisconnect) { 6966 /* Expect a disconnection from the old connection */ 6967 transitionTo(mDisconnectingState); 6968 } else if (updatedExisting && getCurrentState() == mConnectedState && 6969 getCurrentWifiConfiguration().networkId == netId) { 6970 // Update the current set of network capabilities, but stay in the 6971 // current state. 6972 updateCapabilities(config); 6973 } else { 6974 /** 6975 * Directly go to disconnected state where we 6976 * process the connection events from supplicant 6977 **/ 6978 transitionTo(mDisconnectedState); 6979 } 6980 } else { 6981 loge("Failed to connect config: " + config + " netId: " + netId); 6982 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6983 WifiManager.ERROR); 6984 break; 6985 } 6986 break; 6987 case WifiManager.SAVE_NETWORK: 6988 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6989 // Fall thru 6990 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6991 lastSavedConfigurationAttempt = null; // Used for debug 6992 config = (WifiConfiguration) message.obj; 6993 if (config == null) { 6994 loge("ERROR: SAVE_NETWORK with null configuration" 6995 + mSupplicantStateTracker.getSupplicantStateName() 6996 + " my state " + getCurrentState().getName()); 6997 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6998 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6999 WifiManager.ERROR); 7000 break; 7001 } 7002 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7003 int nid = config.networkId; 7004 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7005 + " config=" + config.SSID 7006 + " nid=" + config.networkId 7007 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7008 + " my state " + getCurrentState().getName()); 7009 7010 // Only record the uid if this is user initiated 7011 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 7012 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid)) { 7013 loge("Not authorized to update network " 7014 + " config=" + config.SSID 7015 + " cnid=" + config.networkId 7016 + " uid=" + message.sendingUid); 7017 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7018 WifiManager.NOT_AUTHORIZED); 7019 break; 7020 } 7021 7022 result = mWifiConfigStore.saveNetwork(config, -1); 7023 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7024 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7025 if (result.hasIpChanged()) { 7026 // The currently connection configuration was changed 7027 // We switched from DHCP to static or from static to DHCP, or the 7028 // static IP address has changed. 7029 log("Reconfiguring IP on connection"); 7030 // TODO: clear addresses and disable IPv6 7031 // to simplify obtainingIpState. 7032 transitionTo(mObtainingIpState); 7033 } 7034 if (result.hasProxyChanged()) { 7035 log("Reconfiguring proxy on connection"); 7036 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7037 } 7038 } 7039 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7040 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7041 7042 if (VDBG) { 7043 loge("Success save network nid=" 7044 + Integer.toString(result.getNetworkId())); 7045 } 7046 7047 synchronized(mScanResultCache) { 7048 /** 7049 * If the command comes from WifiManager, then 7050 * tell autojoin the user did try to modify and save that network, 7051 * and interpret the SAVE_NETWORK as a request to connect 7052 */ 7053 boolean user = message.what == WifiManager.SAVE_NETWORK; 7054 7055 // Did this connect come from settings 7056 boolean persistConnect = 7057 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7058 7059 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7060 , user, persistConnect); 7061 mWifiAutoJoinController.attemptAutoJoin(); 7062 } 7063 } else { 7064 loge("Failed to save network"); 7065 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7066 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7067 WifiManager.ERROR); 7068 } 7069 break; 7070 case WifiManager.FORGET_NETWORK: 7071 // Debug only, remember last configuration that was forgotten 7072 WifiConfiguration toRemove 7073 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7074 if (toRemove == null) { 7075 lastForgetConfigurationAttempt = null; 7076 } else { 7077 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7078 } 7079 // check that the caller owns this network 7080 netId = message.arg1; 7081 7082 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 7083 loge("Not authorized to forget network " 7084 + " cnid=" + netId 7085 + " uid=" + message.sendingUid); 7086 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7087 WifiManager.NOT_AUTHORIZED); 7088 break; 7089 } 7090 7091 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7092 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7093 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7094 (WifiConfiguration) message.obj); 7095 } else { 7096 loge("Failed to forget network"); 7097 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7098 WifiManager.ERROR); 7099 } 7100 break; 7101 case WifiManager.START_WPS: 7102 WpsInfo wpsInfo = (WpsInfo) message.obj; 7103 WpsResult wpsResult; 7104 switch (wpsInfo.setup) { 7105 case WpsInfo.PBC: 7106 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7107 break; 7108 case WpsInfo.KEYPAD: 7109 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7110 break; 7111 case WpsInfo.DISPLAY: 7112 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7113 break; 7114 default: 7115 wpsResult = new WpsResult(Status.FAILURE); 7116 loge("Invalid setup for WPS"); 7117 break; 7118 } 7119 mWifiConfigStore.setLastSelectedConfiguration 7120 (WifiConfiguration.INVALID_NETWORK_ID); 7121 if (wpsResult.status == Status.SUCCESS) { 7122 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7123 transitionTo(mWpsRunningState); 7124 } else { 7125 loge("Failed to start WPS with config " + wpsInfo.toString()); 7126 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7127 } 7128 break; 7129 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7130 if (DBG) log("Network connection established"); 7131 mLastNetworkId = message.arg1; 7132 mLastBssid = (String) message.obj; 7133 7134 mWifiInfo.setBSSID(mLastBssid); 7135 mWifiInfo.setNetworkId(mLastNetworkId); 7136 7137 sendNetworkStateChangeBroadcast(mLastBssid); 7138 transitionTo(mObtainingIpState); 7139 break; 7140 case WifiMonitor.ANQP_DONE_EVENT: 7141 Log.d("HS2J", String.format("WFSM: ANQP for %016x %s", 7142 (Long)message.obj, message.arg1 != 0 ? "success" : "fail")); 7143 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 7144 break; 7145 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7146 // Calling handleNetworkDisconnect here is redundant because we might already 7147 // have called it when leaving L2ConnectedState to go to disconnecting state 7148 // or thru other path 7149 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7150 // if they are valid, and only in this case call handleNEtworkDisconnect, 7151 // TODO: this should be fixed for a L MR release 7152 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7153 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7154 // at the chip etc... 7155 if (DBG) log("ConnectModeState: Network connection lost "); 7156 handleNetworkDisconnect(); 7157 transitionTo(mDisconnectedState); 7158 break; 7159 default: 7160 return NOT_HANDLED; 7161 } 7162 return HANDLED; 7163 } 7164 } 7165 7166 private void updateCapabilities(WifiConfiguration config) { 7167 if (config.ephemeral) { 7168 mNetworkCapabilities.removeCapability( 7169 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7170 } else { 7171 mNetworkCapabilities.addCapability( 7172 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7173 } 7174 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7175 } 7176 7177 private class WifiNetworkAgent extends NetworkAgent { 7178 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7179 NetworkCapabilities nc, LinkProperties lp, int score) { 7180 super(l, c, TAG, ni, nc, lp, score); 7181 } 7182 protected void unwanted() { 7183 // Ignore if we're not the current networkAgent. 7184 if (this != mNetworkAgent) return; 7185 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7186 + Integer.toString(mWifiInfo.score)); 7187 unwantedNetwork(network_status_unwanted_disconnect); 7188 } 7189 7190 protected void networkStatus(int status) { 7191 if (status == NetworkAgent.INVALID_NETWORK) { 7192 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7193 + Integer.toString(mWifiInfo.score)); 7194 unwantedNetwork(network_status_unwanted_disable_autojoin); 7195 } else if (status == NetworkAgent.VALID_NETWORK) { 7196 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7197 + Integer.toString(mWifiInfo.score)); 7198 doNetworkStatus(status); 7199 } 7200 } 7201 } 7202 7203 void unwantedNetwork(int reason) { 7204 sendMessage(CMD_UNWANTED_NETWORK, reason); 7205 } 7206 7207 void doNetworkStatus(int status) { 7208 sendMessage(CMD_NETWORK_STATUS, status); 7209 } 7210 7211 // rfc4186 & rfc4187: 7212 // create Permanent Identity base on IMSI, 7213 // identity = usernam@realm 7214 // with username = prefix | IMSI 7215 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7216 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7217 String mcc; 7218 String mnc; 7219 String prefix; 7220 7221 if (imsi == null || imsi.isEmpty()) 7222 return ""; 7223 7224 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7225 prefix = "1"; 7226 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7227 prefix = "0"; 7228 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7229 prefix = "6"; 7230 else // not a valide EapMethod 7231 return ""; 7232 7233 /* extract mcc & mnc from mccMnc */ 7234 if (mccMnc != null && !mccMnc.isEmpty()) { 7235 mcc = mccMnc.substring(0, 3); 7236 mnc = mccMnc.substring(3); 7237 if (mnc.length() == 2) 7238 mnc = "0" + mnc; 7239 } else { 7240 // extract mcc & mnc from IMSI, assume mnc size is 3 7241 mcc = imsi.substring(0, 3); 7242 mnc = imsi.substring(3, 6); 7243 } 7244 7245 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7246 } 7247 7248 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7249 if (config == null) 7250 return false; 7251 7252 // We are still seeing a fairly high power consumption triggered by autojoin scans 7253 // Hence do partial scans only for PSK configuration that are roamable since the 7254 // primary purpose of the partial scans is roaming. 7255 // Full badn scans with exponential backoff for the purpose or extended roaming and 7256 // network switching are performed unconditionally. 7257 if (config.scanResultCache == null 7258 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7259 || config.scanResultCache.size() > 6) { 7260 //return true but to not trigger the scan 7261 return true; 7262 } 7263 HashSet<Integer> channels 7264 = mWifiConfigStore.makeChannelList(config, 7265 ONE_HOUR_MILLI, restrictChannelList); 7266 if (channels != null && channels.size() != 0) { 7267 StringBuilder freqs = new StringBuilder(); 7268 boolean first = true; 7269 for (Integer channel : channels) { 7270 if (!first) 7271 freqs.append(","); 7272 freqs.append(channel.toString()); 7273 first = false; 7274 } 7275 //if (DBG) { 7276 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7277 //} 7278 // Call wifi native to start the scan 7279 if (startScanNative( 7280 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7281 freqs.toString())) { 7282 // Only count battery consumption if scan request is accepted 7283 noteScanStart(SCAN_ALARM_SOURCE, null); 7284 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7285 } else { 7286 // used for debug only, mark scan as failed 7287 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7288 } 7289 return true; 7290 } else { 7291 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7292 return false; 7293 } 7294 } 7295 7296 void clearCurrentConfigBSSID(String dbg) { 7297 // Clear the bssid in the current config's network block 7298 WifiConfiguration config = getCurrentWifiConfiguration(); 7299 if (config == null) 7300 return; 7301 clearConfigBSSID(config, dbg); 7302 } 7303 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7304 if (config == null) 7305 return; 7306 if (DBG) { 7307 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7308 + " config.bssid " + config.BSSID); 7309 } 7310 config.autoJoinBSSID = "any"; 7311 config.BSSID = "any"; 7312 if (DBG) { 7313 loge(dbg + " " + config.SSID 7314 + " nid=" + Integer.toString(config.networkId)); 7315 } 7316 mWifiConfigStore.saveWifiConfigBSSID(config); 7317 } 7318 7319 class L2ConnectedState extends State { 7320 @Override 7321 public void enter() { 7322 mRssiPollToken++; 7323 if (mEnableRssiPolling) { 7324 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7325 } 7326 if (mNetworkAgent != null) { 7327 loge("Have NetworkAgent when entering L2Connected"); 7328 setNetworkDetailedState(DetailedState.DISCONNECTED); 7329 } 7330 setNetworkDetailedState(DetailedState.CONNECTING); 7331 7332 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 7333 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7334 } 7335 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7336 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7337 mLinkProperties, 60); 7338 7339 // We must clear the config BSSID, as the wifi chipset may decide to roam 7340 // from this point on and having the BSSID specified in the network block would 7341 // cause the roam to faile and the device to disconnect 7342 clearCurrentConfigBSSID("L2ConnectedState"); 7343 } 7344 7345 @Override 7346 public void exit() { 7347 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7348 // Bug: 15347363 7349 // For paranoia's sake, call handleNetworkDisconnect 7350 // only if BSSID is null or last networkId 7351 // is not invalid. 7352 if (DBG) { 7353 StringBuilder sb = new StringBuilder(); 7354 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7355 if (mLastBssid !=null) { 7356 sb.append(" ").append(mLastBssid); 7357 } 7358 } 7359 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7360 handleNetworkDisconnect(); 7361 } 7362 } 7363 7364 @Override 7365 public boolean processMessage(Message message) { 7366 logStateAndMessage(message, getClass().getSimpleName()); 7367 7368 switch (message.what) { 7369 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7370 handlePreDhcpSetup(); 7371 break; 7372 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7373 handlePostDhcpSetup(); 7374 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7375 if (DBG) log("WifiStateMachine DHCP successful"); 7376 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7377 // We advance to mVerifyingLinkState because handleIPv4Success will call 7378 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7379 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7380 if (DBG) { 7381 int count = -1; 7382 WifiConfiguration config = getCurrentWifiConfiguration(); 7383 if (config != null) { 7384 count = config.numConnectionFailures; 7385 } 7386 log("WifiStateMachine DHCP failure count=" + count); 7387 } 7388 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7389 // As above, we transition to mDisconnectingState via updateLinkProperties. 7390 } 7391 break; 7392 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7393 handleSuccessfulIpConfiguration(); 7394 sendConnectedState(); 7395 transitionTo(mConnectedState); 7396 break; 7397 case CMD_IP_CONFIGURATION_LOST: 7398 // Get Link layer stats so as we get fresh tx packet counters 7399 getWifiLinkLayerStats(true); 7400 handleIpConfigurationLost(); 7401 transitionTo(mDisconnectingState); 7402 break; 7403 case CMD_DISCONNECT: 7404 mWifiNative.disconnect(); 7405 transitionTo(mDisconnectingState); 7406 break; 7407 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7408 if (message.arg1 == 1) { 7409 mWifiNative.disconnect(); 7410 mTemporarilyDisconnectWifi = true; 7411 transitionTo(mDisconnectingState); 7412 } 7413 break; 7414 case CMD_SET_OPERATIONAL_MODE: 7415 if (message.arg1 != CONNECT_MODE) { 7416 sendMessage(CMD_DISCONNECT); 7417 deferMessage(message); 7418 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7419 noteWifiDisabledWhileAssociated(); 7420 } 7421 } 7422 mWifiConfigStore. 7423 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7424 break; 7425 case CMD_SET_COUNTRY_CODE: 7426 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7427 deferMessage(message); 7428 break; 7429 case CMD_START_SCAN: 7430 //if (DBG) { 7431 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7432 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7433 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7434 + " targetRoamBSSID=" + mTargetRoamBSSID 7435 + " RSSI=" + mWifiInfo.getRssi()); 7436 //} 7437 if (message.arg1 == SCAN_ALARM_SOURCE) { 7438 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7439 // not be processed) and restart the scan if needed 7440 boolean shouldScan = 7441 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7442 if (!checkAndRestartDelayedScan(message.arg2, 7443 shouldScan, 7444 mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null)) { 7445 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7446 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7447 + message.arg1 7448 + " " + message.arg2 + ", " + mDelayedScanCounter 7449 + " -> obsolete"); 7450 return HANDLED; 7451 } 7452 if (mP2pConnected.get()) { 7453 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7454 + message.arg1 7455 + " " + message.arg2 + ", " + mDelayedScanCounter 7456 + " ignore because P2P is connected"); 7457 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7458 return HANDLED; 7459 } 7460 boolean tryFullBandScan = false; 7461 boolean restrictChannelList = false; 7462 long now_ms = System.currentTimeMillis(); 7463 if (DBG) { 7464 loge("WifiStateMachine CMD_START_SCAN with age=" 7465 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7466 + " interval=" + fullBandConnectedTimeIntervalMilli 7467 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7468 } 7469 if (mWifiInfo != null) { 7470 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7471 (now_ms - lastFullBandConnectedTimeMilli) 7472 > fullBandConnectedTimeIntervalMilli) { 7473 if (DBG) { 7474 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7475 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7476 + " interval=" + fullBandConnectedTimeIntervalMilli 7477 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7478 } 7479 tryFullBandScan = true; 7480 } 7481 7482 if (mWifiInfo.txSuccessRate > 7483 mWifiConfigStore.maxTxPacketForFullScans 7484 || mWifiInfo.rxSuccessRate > 7485 mWifiConfigStore.maxRxPacketForFullScans) { 7486 // Too much traffic at the interface, hence no full band scan 7487 if (DBG) { 7488 loge("WifiStateMachine CMD_START_SCAN " + 7489 "prevent full band scan due to pkt rate"); 7490 } 7491 tryFullBandScan = false; 7492 } 7493 7494 if (mWifiInfo.txSuccessRate > 7495 mWifiConfigStore.maxTxPacketForPartialScans 7496 || mWifiInfo.rxSuccessRate > 7497 mWifiConfigStore.maxRxPacketForPartialScans) { 7498 // Don't scan if lots of packets are being sent 7499 restrictChannelList = true; 7500 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7501 if (DBG) { 7502 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7503 + " ...and ignore scans" 7504 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7505 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7506 } 7507 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7508 return HANDLED; 7509 } 7510 } 7511 } 7512 7513 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7514 if (DBG) { 7515 loge("WifiStateMachine CMD_START_SCAN full=" + 7516 tryFullBandScan); 7517 } 7518 if (currentConfiguration != null) { 7519 if (fullBandConnectedTimeIntervalMilli 7520 < mWifiConfigStore.associatedPartialScanPeriodMilli.get()) { 7521 // Sanity 7522 fullBandConnectedTimeIntervalMilli 7523 = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 7524 } 7525 if (tryFullBandScan) { 7526 lastFullBandConnectedTimeMilli = now_ms; 7527 if (fullBandConnectedTimeIntervalMilli 7528 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7529 // Increase the interval 7530 fullBandConnectedTimeIntervalMilli 7531 = fullBandConnectedTimeIntervalMilli 7532 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7533 7534 if (DBG) { 7535 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7536 + fullBandConnectedTimeIntervalMilli); 7537 } 7538 } 7539 handleScanRequest( 7540 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7541 } else { 7542 if (!startScanForConfiguration( 7543 currentConfiguration, restrictChannelList)) { 7544 if (DBG) { 7545 loge("WifiStateMachine starting scan, " + 7546 " did not find channels -> full"); 7547 } 7548 lastFullBandConnectedTimeMilli = now_ms; 7549 if (fullBandConnectedTimeIntervalMilli 7550 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7551 // Increase the interval 7552 fullBandConnectedTimeIntervalMilli 7553 = fullBandConnectedTimeIntervalMilli 7554 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7555 7556 if (DBG) { 7557 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7558 + fullBandConnectedTimeIntervalMilli); 7559 } 7560 } 7561 handleScanRequest( 7562 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7563 } 7564 } 7565 7566 } else { 7567 loge("CMD_START_SCAN : connected mode and no configuration"); 7568 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7569 } 7570 } else { 7571 // Not scan alarm source 7572 return NOT_HANDLED; 7573 } 7574 break; 7575 /* Ignore connection to same network */ 7576 case WifiManager.CONNECT_NETWORK: 7577 int netId = message.arg1; 7578 if (mWifiInfo.getNetworkId() == netId) { 7579 break; 7580 } 7581 return NOT_HANDLED; 7582 /* Ignore */ 7583 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7584 break; 7585 case CMD_RSSI_POLL: 7586 if (message.arg1 == mRssiPollToken) { 7587 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7588 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7589 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7590 if (stats != null) { 7591 // Sanity check the results provided by driver 7592 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7593 && (stats.rssi_mgmt == 0 7594 || stats.beacon_rx == 0)) { 7595 stats = null; 7596 } 7597 } 7598 // Get Info and continue polling 7599 fetchRssiLinkSpeedAndFrequencyNative(); 7600 calculateWifiScore(stats); 7601 } 7602 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7603 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7604 7605 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7606 } else { 7607 // Polling has completed 7608 } 7609 break; 7610 case CMD_ENABLE_RSSI_POLL: 7611 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7612 mEnableRssiPolling = (message.arg1 == 1); 7613 } else { 7614 mEnableRssiPolling = false; 7615 } 7616 mRssiPollToken++; 7617 if (mEnableRssiPolling) { 7618 // First poll 7619 fetchRssiLinkSpeedAndFrequencyNative(); 7620 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7621 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7622 } else { 7623 cleanWifiScore(); 7624 } 7625 break; 7626 case WifiManager.RSSI_PKTCNT_FETCH: 7627 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7628 fetchRssiLinkSpeedAndFrequencyNative(); 7629 info.rssi = mWifiInfo.getRssi(); 7630 fetchPktcntNative(info); 7631 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7632 break; 7633 case CMD_DELAYED_NETWORK_DISCONNECT: 7634 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7635 7636 // Ignore if we are not debouncing 7637 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7638 + message.arg1); 7639 return HANDLED; 7640 } else { 7641 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7642 + message.arg1); 7643 7644 linkDebouncing = false; 7645 // If we are still debouncing while this message comes, 7646 // it means we were not able to reconnect within the alloted time 7647 // = LINK_FLAPPING_DEBOUNCE_MSEC 7648 // and thus, trigger a real disconnect 7649 handleNetworkDisconnect(); 7650 transitionTo(mDisconnectedState); 7651 } 7652 break; 7653 case CMD_ASSOCIATED_BSSID: 7654 if ((String) message.obj == null) { 7655 loge("Associated command w/o BSSID"); 7656 break; 7657 } 7658 mLastBssid = (String) message.obj; 7659 if (mLastBssid != null 7660 && (mWifiInfo.getBSSID() == null 7661 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7662 mWifiInfo.setBSSID((String) message.obj); 7663 sendNetworkStateChangeBroadcast(mLastBssid); 7664 } 7665 break; 7666 default: 7667 return NOT_HANDLED; 7668 } 7669 7670 return HANDLED; 7671 } 7672 } 7673 7674 class ObtainingIpState extends State { 7675 @Override 7676 public void enter() { 7677 if (DBG) { 7678 String key = ""; 7679 if (getCurrentWifiConfiguration() != null) { 7680 key = getCurrentWifiConfiguration().configKey(); 7681 } 7682 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7683 + " " + key + " " 7684 + " roam=" + mAutoRoaming 7685 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7686 + " watchdog= " + obtainingIpWatchdogCount); 7687 } 7688 7689 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7690 // We might still be roaming 7691 linkDebouncing = false; 7692 7693 // Send event to CM & network change broadcast 7694 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7695 7696 // We must clear the config BSSID, as the wifi chipset may decide to roam 7697 // from this point on and having the BSSID specified in the network block would 7698 // cause the roam to faile and the device to disconnect 7699 clearCurrentConfigBSSID("ObtainingIpAddress"); 7700 7701 try { 7702 mNwService.enableIpv6(mInterfaceName); 7703 } catch (RemoteException re) { 7704 loge("Failed to enable IPv6: " + re); 7705 } catch (IllegalStateException e) { 7706 loge("Failed to enable IPv6: " + e); 7707 } 7708 7709 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7710 if (isRoaming()) { 7711 renewDhcp(); 7712 } else { 7713 // Remove any IP address on the interface in case we're switching from static 7714 // IP configuration to DHCP. This is safe because if we get here when not 7715 // roaming, we don't have a usable address. 7716 clearIPv4Address(mInterfaceName); 7717 startDhcp(); 7718 } 7719 obtainingIpWatchdogCount++; 7720 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7721 // Get Link layer stats so as we get fresh tx packet counters 7722 getWifiLinkLayerStats(true); 7723 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7724 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7725 } else { 7726 // stop any running dhcp before assigning static IP 7727 stopDhcp(); 7728 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7729 mLastNetworkId); 7730 if (config.ipAddress == null) { 7731 loge("Static IP lacks address"); 7732 sendMessage(CMD_STATIC_IP_FAILURE); 7733 } else { 7734 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7735 ifcg.setLinkAddress(config.ipAddress); 7736 ifcg.setInterfaceUp(); 7737 try { 7738 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7739 if (DBG) log("Static IP configuration succeeded"); 7740 DhcpResults dhcpResults = new DhcpResults(config); 7741 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7742 } catch (RemoteException re) { 7743 loge("Static IP configuration failed: " + re); 7744 sendMessage(CMD_STATIC_IP_FAILURE); 7745 } catch (IllegalStateException e) { 7746 loge("Static IP configuration failed: " + e); 7747 sendMessage(CMD_STATIC_IP_FAILURE); 7748 } 7749 } 7750 } 7751 } 7752 @Override 7753 public boolean processMessage(Message message) { 7754 logStateAndMessage(message, getClass().getSimpleName()); 7755 7756 switch(message.what) { 7757 case CMD_STATIC_IP_SUCCESS: 7758 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7759 break; 7760 case CMD_STATIC_IP_FAILURE: 7761 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7762 break; 7763 case CMD_AUTO_CONNECT: 7764 case CMD_AUTO_ROAM: 7765 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7766 break; 7767 case WifiManager.SAVE_NETWORK: 7768 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7769 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7770 deferMessage(message); 7771 break; 7772 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7773 case CMD_SET_HIGH_PERF_MODE: 7774 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7775 deferMessage(message); 7776 break; 7777 /* Defer scan request since we should not switch to other channels at DHCP */ 7778 case CMD_START_SCAN: 7779 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7780 deferMessage(message); 7781 break; 7782 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7783 if (message.arg1 == obtainingIpWatchdogCount) { 7784 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7785 + obtainingIpWatchdogCount); 7786 handleIpConfigurationLost(); 7787 transitionTo(mDisconnectingState); 7788 break; 7789 } 7790 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7791 break; 7792 default: 7793 return NOT_HANDLED; 7794 } 7795 return HANDLED; 7796 } 7797 } 7798 7799 class VerifyingLinkState extends State { 7800 @Override 7801 public void enter() { 7802 log(getName() + " enter"); 7803 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7804 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7805 sendNetworkStateChangeBroadcast(mLastBssid); 7806 // End roaming 7807 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7808 } 7809 @Override 7810 public boolean processMessage(Message message) { 7811 logStateAndMessage(message, getClass().getSimpleName()); 7812 7813 switch (message.what) { 7814 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7815 // Stay here 7816 log(getName() + " POOR_LINK_DETECTED: no transition"); 7817 break; 7818 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7819 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7820 7821 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7822 sendConnectedState(); 7823 transitionTo(mConnectedState); 7824 break; 7825 default: 7826 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7827 return NOT_HANDLED; 7828 } 7829 return HANDLED; 7830 } 7831 } 7832 7833 private void sendConnectedState() { 7834 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7835 // existing behaviour. The captive portal check really happens after we 7836 // transition into DetailedState.CONNECTED. 7837 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7838 mWifiConfigStore.updateStatus(mLastNetworkId, 7839 DetailedState.CAPTIVE_PORTAL_CHECK); 7840 sendNetworkStateChangeBroadcast(mLastBssid); 7841 7842 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7843 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7844 } 7845 7846 setNetworkDetailedState(DetailedState.CONNECTED); 7847 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7848 sendNetworkStateChangeBroadcast(mLastBssid); 7849 } 7850 7851 class RoamingState extends State { 7852 boolean mAssociated; 7853 @Override 7854 public void enter() { 7855 if (DBG) { 7856 log("RoamingState Enter" 7857 + " mScreenOn=" + mScreenOn ); 7858 } 7859 setScanAlarm(false); 7860 7861 // Make sure we disconnect if roaming fails 7862 roamWatchdogCount++; 7863 loge("Start Roam Watchdog " + roamWatchdogCount); 7864 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7865 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7866 mAssociated = false; 7867 } 7868 @Override 7869 public boolean processMessage(Message message) { 7870 logStateAndMessage(message, getClass().getSimpleName()); 7871 WifiConfiguration config; 7872 switch (message.what) { 7873 case CMD_IP_CONFIGURATION_LOST: 7874 config = getCurrentWifiConfiguration(); 7875 if (config != null) { 7876 mWifiConfigStore.noteRoamingFailure(config, 7877 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 7878 } 7879 return NOT_HANDLED; 7880 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7881 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7882 return HANDLED; 7883 case CMD_UNWANTED_NETWORK: 7884 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7885 return HANDLED; 7886 case CMD_SET_OPERATIONAL_MODE: 7887 if (message.arg1 != CONNECT_MODE) { 7888 deferMessage(message); 7889 } 7890 break; 7891 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7892 /** 7893 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7894 * before NETWORK_DISCONNECTION_EVENT 7895 * And there is an associated BSSID corresponding to our target BSSID, then 7896 * we have missed the network disconnection, transition to mDisconnectedState 7897 * and handle the rest of the events there. 7898 */ 7899 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7900 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7901 || stateChangeResult.state == SupplicantState.INACTIVE 7902 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7903 if (DBG) { 7904 log("STATE_CHANGE_EVENT in roaming state " 7905 + stateChangeResult.toString() ); 7906 } 7907 if (stateChangeResult.BSSID != null 7908 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7909 handleNetworkDisconnect(); 7910 transitionTo(mDisconnectedState); 7911 } 7912 } 7913 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7914 // We completed the layer2 roaming part 7915 mAssociated = true; 7916 if (stateChangeResult.BSSID != null) { 7917 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7918 } 7919 } 7920 break; 7921 case CMD_ROAM_WATCHDOG_TIMER: 7922 if (roamWatchdogCount == message.arg1) { 7923 if (DBG) log("roaming watchdog! -> disconnect"); 7924 mRoamFailCount++; 7925 handleNetworkDisconnect(); 7926 mWifiNative.disconnect(); 7927 transitionTo(mDisconnectedState); 7928 } 7929 break; 7930 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7931 if (mAssociated) { 7932 if (DBG) log("roaming and Network connection established"); 7933 mLastNetworkId = message.arg1; 7934 mLastBssid = (String) message.obj; 7935 mWifiInfo.setBSSID(mLastBssid); 7936 mWifiInfo.setNetworkId(mLastNetworkId); 7937 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7938 sendNetworkStateChangeBroadcast(mLastBssid); 7939 transitionTo(mObtainingIpState); 7940 } else { 7941 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7942 } 7943 break; 7944 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7945 // Throw away but only if it corresponds to the network we're roaming to 7946 String bssid = (String)message.obj; 7947 if (true) { 7948 String target = ""; 7949 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7950 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7951 + " BSSID=" + bssid 7952 + " target=" + target); 7953 } 7954 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7955 handleNetworkDisconnect(); 7956 transitionTo(mDisconnectedState); 7957 } 7958 break; 7959 case WifiMonitor.SSID_TEMP_DISABLED: 7960 // Auth error while roaming 7961 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7962 + " id=" + Integer.toString(message.arg1) 7963 + " isRoaming=" + isRoaming() 7964 + " roam=" + Integer.toString(mAutoRoaming)); 7965 if (message.arg1 == mLastNetworkId) { 7966 config = getCurrentWifiConfiguration(); 7967 if (config != null) { 7968 mWifiConfigStore.noteRoamingFailure(config, 7969 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 7970 } 7971 handleNetworkDisconnect(); 7972 transitionTo(mDisconnectingState); 7973 } 7974 return NOT_HANDLED; 7975 case CMD_START_SCAN: 7976 deferMessage(message); 7977 break; 7978 default: 7979 return NOT_HANDLED; 7980 } 7981 return HANDLED; 7982 } 7983 7984 @Override 7985 public void exit() { 7986 loge("WifiStateMachine: Leaving Roaming state"); 7987 } 7988 } 7989 7990 class ConnectedState extends State { 7991 @Override 7992 public void enter() { 7993 String address; 7994 updateDefaultRouteMacAddress(1000); 7995 if (DBG) { 7996 log("ConnectedState Enter " 7997 + " mScreenOn=" + mScreenOn 7998 + " scanperiod=" 7999 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli.get()) ); 8000 } 8001 if (mScreenOn 8002 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8003 // restart scan alarm 8004 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null); 8005 } 8006 registerConnected(); 8007 lastConnectAttempt = 0; 8008 targetWificonfiguration = null; 8009 // Paranoia 8010 linkDebouncing = false; 8011 8012 // Not roaming anymore 8013 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8014 8015 if (testNetworkDisconnect) { 8016 testNetworkDisconnectCounter++; 8017 loge("ConnectedState Enter start disconnect test " + 8018 testNetworkDisconnectCounter); 8019 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8020 testNetworkDisconnectCounter, 0), 15000); 8021 } 8022 8023 // Reenable all networks, allow for hidden networks to be scanned 8024 mWifiConfigStore.enableAllNetworks(); 8025 8026 mLastDriverRoamAttempt = 0; 8027 } 8028 @Override 8029 public boolean processMessage(Message message) { 8030 WifiConfiguration config = null; 8031 logStateAndMessage(message, getClass().getSimpleName()); 8032 8033 switch (message.what) { 8034 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8035 if (DBG) log("Watchdog reports poor link"); 8036 transitionTo(mVerifyingLinkState); 8037 break; 8038 case CMD_UNWANTED_NETWORK: 8039 if (message.arg1 == network_status_unwanted_disconnect) { 8040 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8041 mWifiNative.disconnect(); 8042 transitionTo(mDisconnectingState); 8043 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8044 config = getCurrentWifiConfiguration(); 8045 if (config != null) { 8046 // Disable autojoin 8047 config.numNoInternetAccessReports += 1; 8048 } 8049 } 8050 return HANDLED; 8051 case CMD_NETWORK_STATUS: 8052 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8053 config = getCurrentWifiConfiguration(); 8054 if (config != null) { 8055 // re-enable autojoin 8056 config.numNoInternetAccessReports = 0; 8057 config.validatedInternetAccess = true; 8058 } 8059 } 8060 return HANDLED; 8061 case CMD_TEST_NETWORK_DISCONNECT: 8062 // Force a disconnect 8063 if (message.arg1 == testNetworkDisconnectCounter) { 8064 mWifiNative.disconnect(); 8065 } 8066 break; 8067 case CMD_ASSOCIATED_BSSID: 8068 // ASSOCIATING to a new BSSID while already connected, indicates 8069 // that driver is roaming 8070 mLastDriverRoamAttempt = System.currentTimeMillis(); 8071 String toBSSID = (String)message.obj; 8072 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8073 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8074 } 8075 return NOT_HANDLED; 8076 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8077 long lastRoam = 0; 8078 if (mLastDriverRoamAttempt != 0) { 8079 // Calculate time since last driver roam attempt 8080 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8081 mLastDriverRoamAttempt = 0; 8082 } 8083 config = getCurrentWifiConfiguration(); 8084 if (mScreenOn 8085 && !linkDebouncing 8086 && config != null 8087 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8088 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8089 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8090 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8091 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8092 && mWifiInfo.getRssi() > 8093 WifiConfiguration.BAD_RSSI_24) 8094 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8095 && mWifiInfo.getRssi() > 8096 WifiConfiguration.BAD_RSSI_5))) { 8097 // Start de-bouncing the L2 disconnection: 8098 // this L2 disconnection might be spurious. 8099 // Hence we allow 7 seconds for the state machine to try 8100 // to reconnect, go thru the 8101 // roaming cycle and enter Obtaining IP address 8102 // before signalling the disconnect to ConnectivityService and L3 8103 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8104 linkDebouncing = true; 8105 8106 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8107 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8108 if (DBG) { 8109 log("NETWORK_DISCONNECTION_EVENT in connected state" 8110 + " BSSID=" + mWifiInfo.getBSSID() 8111 + " RSSI=" + mWifiInfo.getRssi() 8112 + " freq=" + mWifiInfo.getFrequency() 8113 + " reason=" + message.arg2 8114 + " -> debounce"); 8115 } 8116 return HANDLED; 8117 } else { 8118 if (DBG) { 8119 int ajst = -1; 8120 if (config != null) ajst = config.autoJoinStatus; 8121 log("NETWORK_DISCONNECTION_EVENT in connected state" 8122 + " BSSID=" + mWifiInfo.getBSSID() 8123 + " RSSI=" + mWifiInfo.getRssi() 8124 + " freq=" + mWifiInfo.getFrequency() 8125 + " was debouncing=" + linkDebouncing 8126 + " reason=" + message.arg2 8127 + " ajst=" + ajst); 8128 } 8129 } 8130 break; 8131 case CMD_AUTO_ROAM: 8132 // Clear the driver roam indication since we are attempting a framerwork roam 8133 mLastDriverRoamAttempt = 0; 8134 8135 /* Connect command coming from auto-join */ 8136 ScanResult candidate = (ScanResult)message.obj; 8137 String bssid = "any"; 8138 if (candidate != null && candidate.is5GHz()) { 8139 // Only lock BSSID for 5GHz networks 8140 bssid = candidate.BSSID; 8141 } 8142 int netId = mLastNetworkId; 8143 config = getCurrentWifiConfiguration(); 8144 8145 8146 if (config == null) { 8147 loge("AUTO_ROAM and no config, bail out..."); 8148 break; 8149 } 8150 8151 loge("CMD_AUTO_ROAM sup state " 8152 + mSupplicantStateTracker.getSupplicantStateName() 8153 + " my state " + getCurrentState().getName() 8154 + " nid=" + Integer.toString(netId) 8155 + " config " + config.configKey() 8156 + " roam=" + Integer.toString(message.arg2) 8157 + " to " + bssid 8158 + " targetRoamBSSID " + mTargetRoamBSSID); 8159 8160 /* Save the BSSID so as to lock it @ firmware */ 8161 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8162 loge("AUTO_ROAM nothing to do"); 8163 // Same BSSID, nothing to do 8164 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8165 break; 8166 }; 8167 8168 // Make sure the network is enabled, since supplicant will not reenable it 8169 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8170 8171 if (deferForUserInput(message, netId, false)) { 8172 break; 8173 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8174 WifiConfiguration.USER_BANNED) { 8175 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8176 WifiManager.NOT_AUTHORIZED); 8177 break; 8178 } 8179 8180 boolean ret = false; 8181 if (mLastNetworkId != netId) { 8182 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 8183 mWifiNative.reconnect()) { 8184 ret = true; 8185 } 8186 } else { 8187 ret = mWifiNative.reassociate(); 8188 } 8189 if (ret) { 8190 lastConnectAttempt = System.currentTimeMillis(); 8191 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8192 8193 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8194 mAutoRoaming = message.arg2; 8195 transitionTo(mRoamingState); 8196 8197 } else { 8198 loge("Failed to connect config: " + config + " netId: " + netId); 8199 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8200 WifiManager.ERROR); 8201 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8202 break; 8203 } 8204 break; 8205 default: 8206 return NOT_HANDLED; 8207 } 8208 return HANDLED; 8209 } 8210 8211 @Override 8212 public void exit() { 8213 loge("WifiStateMachine: Leaving Connected state"); 8214 setScanAlarm(false); 8215 mLastDriverRoamAttempt = 0; 8216 } 8217 } 8218 8219 class DisconnectingState extends State { 8220 8221 @Override 8222 public void enter() { 8223 8224 if (PDBG) { 8225 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 8226 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8227 + " screenOn=" + mScreenOn); 8228 } 8229 8230 // Make sure we disconnect: we enter this state prior connecting to a new 8231 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 8232 // event which in this case will be indicating that supplicant started to associate. 8233 // In some cases supplicant doesn't ignore the connect requests (it might not 8234 // find the target SSID in its cache), 8235 // Therefore we end up stuck that state, hence the need for the watchdog. 8236 disconnectingWatchdogCount++; 8237 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8238 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8239 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8240 } 8241 8242 @Override 8243 public boolean processMessage(Message message) { 8244 logStateAndMessage(message, getClass().getSimpleName()); 8245 switch (message.what) { 8246 case CMD_SET_OPERATIONAL_MODE: 8247 if (message.arg1 != CONNECT_MODE) { 8248 deferMessage(message); 8249 } 8250 break; 8251 case CMD_START_SCAN: 8252 deferMessage(message); 8253 return HANDLED; 8254 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8255 if (disconnectingWatchdogCount == message.arg1) { 8256 if (DBG) log("disconnecting watchdog! -> disconnect"); 8257 handleNetworkDisconnect(); 8258 transitionTo(mDisconnectedState); 8259 } 8260 break; 8261 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8262 /** 8263 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8264 * we have missed the network disconnection, transition to mDisconnectedState 8265 * and handle the rest of the events there 8266 */ 8267 deferMessage(message); 8268 handleNetworkDisconnect(); 8269 transitionTo(mDisconnectedState); 8270 break; 8271 default: 8272 return NOT_HANDLED; 8273 } 8274 return HANDLED; 8275 } 8276 } 8277 8278 class DisconnectedState extends State { 8279 @Override 8280 public void enter() { 8281 // We dont scan frequently if this is a temporary disconnect 8282 // due to p2p 8283 if (mTemporarilyDisconnectWifi) { 8284 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8285 return; 8286 } 8287 8288 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8289 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 8290 mDefaultFrameworkScanIntervalMs); 8291 8292 if (PDBG) { 8293 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 8294 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8295 + " screenOn=" + mScreenOn 8296 + " mFrameworkScanIntervalMs=" + mFrameworkScanIntervalMs); 8297 } 8298 8299 /** clear the roaming state, if we were roaming, we failed */ 8300 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8301 8302 if (mScreenOn) { 8303 /** 8304 * screen lit and => delayed timer 8305 */ 8306 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8307 } else { 8308 /** 8309 * screen dark and PNO supported => scan alarm disabled 8310 */ 8311 if (mEnableBackgroundScan) { 8312 /* If a regular scan result is pending, do not initiate background 8313 * scan until the scan results are returned. This is needed because 8314 * initiating a background scan will cancel the regular scan and 8315 * scan results will not be returned until background scanning is 8316 * cleared 8317 */ 8318 if (!mIsScanOngoing) { 8319 enableBackgroundScan(true); 8320 } 8321 } else { 8322 setScanAlarm(true); 8323 } 8324 } 8325 8326 /** 8327 * If we have no networks saved, the supplicant stops doing the periodic scan. 8328 * The scans are useful to notify the user of the presence of an open network. 8329 * Note that these are not wake up scans. 8330 */ 8331 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8332 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8333 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8334 } 8335 8336 mDisconnectedTimeStamp = System.currentTimeMillis(); 8337 8338 } 8339 @Override 8340 public boolean processMessage(Message message) { 8341 boolean ret = HANDLED; 8342 8343 logStateAndMessage(message, getClass().getSimpleName()); 8344 8345 switch (message.what) { 8346 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8347 if (mP2pConnected.get()) break; 8348 if (message.arg1 == mPeriodicScanToken && 8349 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8350 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8351 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8352 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8353 } 8354 break; 8355 case WifiManager.FORGET_NETWORK: 8356 case CMD_REMOVE_NETWORK: 8357 case CMD_REMOVE_APP_CONFIGURATIONS: 8358 case CMD_REMOVE_USER_CONFIGURATIONS: 8359 // Set up a delayed message here. After the forget/remove is handled 8360 // the handled delayed message will determine if there is a need to 8361 // scan and continue 8362 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8363 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8364 ret = NOT_HANDLED; 8365 break; 8366 case CMD_SET_OPERATIONAL_MODE: 8367 if (message.arg1 != CONNECT_MODE) { 8368 mOperationalMode = message.arg1; 8369 8370 mWifiConfigStore.disableAllNetworks(); 8371 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8372 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8373 setWifiState(WIFI_STATE_DISABLED); 8374 } 8375 transitionTo(mScanModeState); 8376 } 8377 mWifiConfigStore. 8378 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8379 break; 8380 /* Ignore network disconnect */ 8381 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8382 break; 8383 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8384 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8385 if (DBG) { 8386 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8387 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8388 + " debouncing=" + linkDebouncing); 8389 } 8390 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8391 /* ConnectModeState does the rest of the handling */ 8392 ret = NOT_HANDLED; 8393 break; 8394 case CMD_START_SCAN: 8395 if (!checkOrDeferScanAllowed(message)) { 8396 // The scan request was rescheduled 8397 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8398 return HANDLED; 8399 } 8400 /* Disable background scan temporarily during a regular scan */ 8401 if (mEnableBackgroundScan) { 8402 enableBackgroundScan(false); 8403 } 8404 if (message.arg1 == SCAN_ALARM_SOURCE) { 8405 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8406 // not be processed) and restart the scan 8407 int period = mDisconnectedScanPeriodMs; 8408 if (mP2pConnected.get()) { 8409 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8410 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8411 mDisconnectedScanPeriodMs); 8412 } 8413 if (!checkAndRestartDelayedScan(message.arg2, 8414 true, period, null, null)) { 8415 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8416 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8417 + message.arg1 8418 + " " + message.arg2 + ", " + mDelayedScanCounter 8419 + " -> obsolete"); 8420 return HANDLED; 8421 } 8422 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8423 ret = HANDLED; 8424 } else { 8425 ret = NOT_HANDLED; 8426 } 8427 break; 8428 case WifiMonitor.SCAN_RESULTS_EVENT: 8429 /* Re-enable background scan when a pending scan result is received */ 8430 if (mEnableBackgroundScan && mIsScanOngoing) { 8431 enableBackgroundScan(true); 8432 } 8433 /* Handled in parent state */ 8434 ret = NOT_HANDLED; 8435 break; 8436 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8437 NetworkInfo info = (NetworkInfo) message.obj; 8438 mP2pConnected.set(info.isConnected()); 8439 if (mP2pConnected.get()) { 8440 int defaultInterval = mContext.getResources().getInteger( 8441 R.integer.config_wifi_scan_interval_p2p_connected); 8442 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8443 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8444 defaultInterval); 8445 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8446 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8447 if (DBG) log("Turn on scanning after p2p disconnected"); 8448 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8449 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8450 } else { 8451 // If P2P is not connected and there are saved networks, then restart 8452 // scanning at the normal period. This is necessary because scanning might 8453 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8454 // was set to zero. 8455 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8456 } 8457 break; 8458 case CMD_RECONNECT: 8459 case CMD_REASSOCIATE: 8460 if (mTemporarilyDisconnectWifi) { 8461 // Drop a third party reconnect/reassociate if STA is 8462 // temporarily disconnected for p2p 8463 break; 8464 } else { 8465 // ConnectModeState handles it 8466 ret = NOT_HANDLED; 8467 } 8468 break; 8469 case CMD_SCREEN_STATE_CHANGED: 8470 handleScreenStateChanged(message.arg1 != 0, 8471 /* startBackgroundScanIfNeeded = */ true); 8472 break; 8473 default: 8474 ret = NOT_HANDLED; 8475 } 8476 return ret; 8477 } 8478 8479 @Override 8480 public void exit() { 8481 /* No need for a background scan upon exit from a disconnected state */ 8482 if (mEnableBackgroundScan) { 8483 enableBackgroundScan(false); 8484 } 8485 setScanAlarm(false); 8486 } 8487 } 8488 8489 class WpsRunningState extends State { 8490 // Tracks the source to provide a reply 8491 private Message mSourceMessage; 8492 @Override 8493 public void enter() { 8494 mSourceMessage = Message.obtain(getCurrentMessage()); 8495 } 8496 @Override 8497 public boolean processMessage(Message message) { 8498 logStateAndMessage(message, getClass().getSimpleName()); 8499 8500 switch (message.what) { 8501 case WifiMonitor.WPS_SUCCESS_EVENT: 8502 // Ignore intermediate success, wait for full connection 8503 break; 8504 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8505 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8506 mSourceMessage.recycle(); 8507 mSourceMessage = null; 8508 deferMessage(message); 8509 transitionTo(mDisconnectedState); 8510 break; 8511 case WifiMonitor.WPS_OVERLAP_EVENT: 8512 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8513 WifiManager.WPS_OVERLAP_ERROR); 8514 mSourceMessage.recycle(); 8515 mSourceMessage = null; 8516 transitionTo(mDisconnectedState); 8517 break; 8518 case WifiMonitor.WPS_FAIL_EVENT: 8519 // Arg1 has the reason for the failure 8520 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8521 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8522 mSourceMessage.recycle(); 8523 mSourceMessage = null; 8524 transitionTo(mDisconnectedState); 8525 } else { 8526 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8527 } 8528 break; 8529 case WifiMonitor.WPS_TIMEOUT_EVENT: 8530 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8531 WifiManager.WPS_TIMED_OUT); 8532 mSourceMessage.recycle(); 8533 mSourceMessage = null; 8534 transitionTo(mDisconnectedState); 8535 break; 8536 case WifiManager.START_WPS: 8537 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8538 break; 8539 case WifiManager.CANCEL_WPS: 8540 if (mWifiNative.cancelWps()) { 8541 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8542 } else { 8543 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8544 } 8545 transitionTo(mDisconnectedState); 8546 break; 8547 /** 8548 * Defer all commands that can cause connections to a different network 8549 * or put the state machine out of connect mode 8550 */ 8551 case CMD_STOP_DRIVER: 8552 case CMD_SET_OPERATIONAL_MODE: 8553 case WifiManager.CONNECT_NETWORK: 8554 case CMD_ENABLE_NETWORK: 8555 case CMD_RECONNECT: 8556 case CMD_REASSOCIATE: 8557 case CMD_ENABLE_ALL_NETWORKS: 8558 deferMessage(message); 8559 break; 8560 case CMD_AUTO_CONNECT: 8561 case CMD_AUTO_ROAM: 8562 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8563 return HANDLED; 8564 case CMD_START_SCAN: 8565 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8566 return HANDLED; 8567 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8568 if (DBG) log("Network connection lost"); 8569 handleNetworkDisconnect(); 8570 break; 8571 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8572 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8573 break; 8574 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8575 // Disregard auth failure events during WPS connection. The 8576 // EAP sequence is retried several times, and there might be 8577 // failures (especially for wps pin). We will get a WPS_XXX 8578 // event at the end of the sequence anyway. 8579 if (DBG) log("Ignore auth failure during WPS connection"); 8580 break; 8581 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8582 // Throw away supplicant state changes when WPS is running. 8583 // We will start getting supplicant state changes once we get 8584 // a WPS success or failure 8585 break; 8586 default: 8587 return NOT_HANDLED; 8588 } 8589 return HANDLED; 8590 } 8591 8592 @Override 8593 public void exit() { 8594 mWifiConfigStore.enableAllNetworks(); 8595 mWifiConfigStore.loadConfiguredNetworks(); 8596 } 8597 } 8598 8599 class SoftApStartingState extends State { 8600 @Override 8601 public void enter() { 8602 final Message message = getCurrentMessage(); 8603 if (message.what == CMD_START_AP) { 8604 final WifiConfiguration config = (WifiConfiguration) message.obj; 8605 8606 if (config == null) { 8607 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8608 } else { 8609 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8610 startSoftApWithConfig(config); 8611 } 8612 } else { 8613 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8614 } 8615 } 8616 @Override 8617 public boolean processMessage(Message message) { 8618 logStateAndMessage(message, getClass().getSimpleName()); 8619 8620 switch(message.what) { 8621 case CMD_START_SUPPLICANT: 8622 case CMD_STOP_SUPPLICANT: 8623 case CMD_START_AP: 8624 case CMD_STOP_AP: 8625 case CMD_START_DRIVER: 8626 case CMD_STOP_DRIVER: 8627 case CMD_SET_OPERATIONAL_MODE: 8628 case CMD_SET_COUNTRY_CODE: 8629 case CMD_SET_FREQUENCY_BAND: 8630 case CMD_START_PACKET_FILTERING: 8631 case CMD_STOP_PACKET_FILTERING: 8632 case CMD_TETHER_STATE_CHANGE: 8633 deferMessage(message); 8634 break; 8635 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8636 WifiConfiguration config = (WifiConfiguration) message.obj; 8637 if (config != null) { 8638 startSoftApWithConfig(config); 8639 } else { 8640 loge("Softap config is null!"); 8641 sendMessage(CMD_START_AP_FAILURE); 8642 } 8643 break; 8644 case CMD_START_AP_SUCCESS: 8645 setWifiApState(WIFI_AP_STATE_ENABLED); 8646 transitionTo(mSoftApStartedState); 8647 break; 8648 case CMD_START_AP_FAILURE: 8649 setWifiApState(WIFI_AP_STATE_FAILED); 8650 transitionTo(mInitialState); 8651 break; 8652 default: 8653 return NOT_HANDLED; 8654 } 8655 return HANDLED; 8656 } 8657 } 8658 8659 class SoftApStartedState extends State { 8660 @Override 8661 public boolean processMessage(Message message) { 8662 logStateAndMessage(message, getClass().getSimpleName()); 8663 8664 switch(message.what) { 8665 case CMD_STOP_AP: 8666 if (DBG) log("Stopping Soft AP"); 8667 /* We have not tethered at this point, so we just shutdown soft Ap */ 8668 try { 8669 mNwService.stopAccessPoint(mInterfaceName); 8670 } catch(Exception e) { 8671 loge("Exception in stopAccessPoint()"); 8672 } 8673 setWifiApState(WIFI_AP_STATE_DISABLED); 8674 transitionTo(mInitialState); 8675 break; 8676 case CMD_START_AP: 8677 // Ignore a start on a running access point 8678 break; 8679 // Fail client mode operation when soft AP is enabled 8680 case CMD_START_SUPPLICANT: 8681 loge("Cannot start supplicant with a running soft AP"); 8682 setWifiState(WIFI_STATE_UNKNOWN); 8683 break; 8684 case CMD_TETHER_STATE_CHANGE: 8685 TetherStateChange stateChange = (TetherStateChange) message.obj; 8686 if (startTethering(stateChange.available)) { 8687 transitionTo(mTetheringState); 8688 } 8689 break; 8690 default: 8691 return NOT_HANDLED; 8692 } 8693 return HANDLED; 8694 } 8695 } 8696 8697 class TetheringState extends State { 8698 @Override 8699 public void enter() { 8700 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8701 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8702 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8703 } 8704 @Override 8705 public boolean processMessage(Message message) { 8706 logStateAndMessage(message, getClass().getSimpleName()); 8707 8708 switch(message.what) { 8709 case CMD_TETHER_STATE_CHANGE: 8710 TetherStateChange stateChange = (TetherStateChange) message.obj; 8711 if (isWifiTethered(stateChange.active)) { 8712 transitionTo(mTetheredState); 8713 } 8714 return HANDLED; 8715 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8716 if (message.arg1 == mTetherToken) { 8717 loge("Failed to get tether update, shutdown soft access point"); 8718 transitionTo(mSoftApStartedState); 8719 // Needs to be first thing handled 8720 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8721 } 8722 break; 8723 case CMD_START_SUPPLICANT: 8724 case CMD_STOP_SUPPLICANT: 8725 case CMD_START_AP: 8726 case CMD_STOP_AP: 8727 case CMD_START_DRIVER: 8728 case CMD_STOP_DRIVER: 8729 case CMD_SET_OPERATIONAL_MODE: 8730 case CMD_SET_COUNTRY_CODE: 8731 case CMD_SET_FREQUENCY_BAND: 8732 case CMD_START_PACKET_FILTERING: 8733 case CMD_STOP_PACKET_FILTERING: 8734 deferMessage(message); 8735 break; 8736 default: 8737 return NOT_HANDLED; 8738 } 8739 return HANDLED; 8740 } 8741 } 8742 8743 class TetheredState extends State { 8744 @Override 8745 public boolean processMessage(Message message) { 8746 logStateAndMessage(message, getClass().getSimpleName()); 8747 8748 switch(message.what) { 8749 case CMD_TETHER_STATE_CHANGE: 8750 TetherStateChange stateChange = (TetherStateChange) message.obj; 8751 if (!isWifiTethered(stateChange.active)) { 8752 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8753 setHostApRunning(null, false); 8754 setHostApRunning(null, true); 8755 } 8756 return HANDLED; 8757 case CMD_STOP_AP: 8758 if (DBG) log("Untethering before stopping AP"); 8759 setWifiApState(WIFI_AP_STATE_DISABLING); 8760 stopTethering(); 8761 transitionTo(mUntetheringState); 8762 // More work to do after untethering 8763 deferMessage(message); 8764 break; 8765 default: 8766 return NOT_HANDLED; 8767 } 8768 return HANDLED; 8769 } 8770 } 8771 8772 class UntetheringState extends State { 8773 @Override 8774 public void enter() { 8775 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8776 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8777 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8778 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 8788 /* Wait till wifi is untethered */ 8789 if (isWifiTethered(stateChange.active)) break; 8790 8791 transitionTo(mSoftApStartedState); 8792 break; 8793 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8794 if (message.arg1 == mTetherToken) { 8795 loge("Failed to get tether update, force stop access point"); 8796 transitionTo(mSoftApStartedState); 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 /** 8820 * State machine initiated requests can have replyTo set to null indicating 8821 * there are no recepients, we ignore those reply actions. 8822 */ 8823 private void replyToMessage(Message msg, int what) { 8824 if (msg.replyTo == null) return; 8825 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8826 mReplyChannel.replyToMessage(msg, dstMsg); 8827 } 8828 8829 private void replyToMessage(Message msg, int what, int arg1) { 8830 if (msg.replyTo == null) return; 8831 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8832 dstMsg.arg1 = arg1; 8833 mReplyChannel.replyToMessage(msg, dstMsg); 8834 } 8835 8836 private void replyToMessage(Message msg, int what, Object obj) { 8837 if (msg.replyTo == null) return; 8838 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8839 dstMsg.obj = obj; 8840 mReplyChannel.replyToMessage(msg, dstMsg); 8841 } 8842 8843 /** 8844 * arg2 on the source message has a unique id that needs to be retained in replies 8845 * to match the request 8846 * <p>see WifiManager for details 8847 */ 8848 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 8849 Message msg = Message.obtain(); 8850 msg.what = what; 8851 msg.arg2 = srcMsg.arg2; 8852 return msg; 8853 } 8854 8855 /** 8856 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 8857 * @param msg Must have a WifiConfiguration obj to succeed 8858 */ 8859 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 8860 WifiConfiguration config) { 8861 if (config != null && config.preSharedKey != null) { 8862 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 8863 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 8864 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 8865 wifiCredentialEventType); 8866 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 8867 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 8868 } 8869 } 8870 8871 private static int parseHex(char ch) { 8872 if ('0' <= ch && ch <= '9') { 8873 return ch - '0'; 8874 } else if ('a' <= ch && ch <= 'f') { 8875 return ch - 'a' + 10; 8876 } else if ('A' <= ch && ch <= 'F') { 8877 return ch - 'A' + 10; 8878 } else { 8879 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8880 } 8881 } 8882 8883 private byte[] parseHex(String hex) { 8884 /* This only works for good input; don't throw bad data at it */ 8885 if (hex == null) { 8886 return new byte[0]; 8887 } 8888 8889 if (hex.length() % 2 != 0) { 8890 throw new NumberFormatException(hex + " is not a valid hex string"); 8891 } 8892 8893 byte[] result = new byte[(hex.length())/2 + 1]; 8894 result[0] = (byte) ((hex.length())/2); 8895 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8896 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8897 byte b = (byte) (val & 0xFF); 8898 result[j] = b; 8899 } 8900 8901 return result; 8902 } 8903 8904 private static String makeHex(byte[] bytes) { 8905 StringBuilder sb = new StringBuilder(); 8906 for (byte b : bytes) { 8907 sb.append(String.format("%02x", b)); 8908 } 8909 return sb.toString(); 8910 } 8911 8912 private static String makeHex(byte[] bytes, int from, int len) { 8913 StringBuilder sb = new StringBuilder(); 8914 for (int i = 0; i < len; i++) { 8915 sb.append(String.format("%02x", bytes[from+i])); 8916 } 8917 return sb.toString(); 8918 } 8919 8920 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8921 8922 int len = array1.length + array2.length + array3.length; 8923 8924 if (array1.length != 0) { 8925 len++; /* add another byte for size */ 8926 } 8927 8928 if (array2.length != 0) { 8929 len++; /* add another byte for size */ 8930 } 8931 8932 if (array3.length != 0) { 8933 len++; /* add another byte for size */ 8934 } 8935 8936 byte[] result = new byte[len]; 8937 8938 int index = 0; 8939 if (array1.length != 0) { 8940 result[index] = (byte) (array1.length & 0xFF); 8941 index++; 8942 for (byte b : array1) { 8943 result[index] = b; 8944 index++; 8945 } 8946 } 8947 8948 if (array2.length != 0) { 8949 result[index] = (byte) (array2.length & 0xFF); 8950 index++; 8951 for (byte b : array2) { 8952 result[index] = b; 8953 index++; 8954 } 8955 } 8956 8957 if (array3.length != 0) { 8958 result[index] = (byte) (array3.length & 0xFF); 8959 index++; 8960 for (byte b : array3) { 8961 result[index] = b; 8962 index++; 8963 } 8964 } 8965 return result; 8966 } 8967 8968 private static byte[] concatHex(byte[] array1, byte[] array2) { 8969 8970 int len = array1.length + array2.length; 8971 8972 byte[] result = new byte[len]; 8973 8974 int index = 0; 8975 if (array1.length != 0) { 8976 for (byte b : array1) { 8977 result[index] = b; 8978 index++; 8979 } 8980 } 8981 8982 if (array2.length != 0) { 8983 for (byte b : array2) { 8984 result[index] = b; 8985 index++; 8986 } 8987 } 8988 8989 return result; 8990 } 8991 8992 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8993 if (targetWificonfiguration == null 8994 || targetWificonfiguration.networkId == requestData.networkId) { 8995 logd("id matches targetWifiConfiguration"); 8996 } else { 8997 logd("id does not match targetWifiConfiguration"); 8998 return; 8999 } 9000 9001 TelephonyManager tm = (TelephonyManager) 9002 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9003 9004 if (tm != null) { 9005 StringBuilder sb = new StringBuilder(); 9006 for (String challenge : requestData.data) { 9007 9008 if (challenge == null || challenge.isEmpty()) 9009 continue; 9010 logd("RAND = " + challenge); 9011 9012 byte[] rand = null; 9013 try { 9014 rand = parseHex(challenge); 9015 } catch (NumberFormatException e) { 9016 loge("malformed challenge"); 9017 continue; 9018 } 9019 9020 String base64Challenge = android.util.Base64.encodeToString( 9021 rand, android.util.Base64.NO_WRAP); 9022 /* 9023 * First, try with appType = 2 => USIM according to 9024 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9025 */ 9026 int appType = 2; 9027 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9028 if (tmResponse == null) { 9029 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9030 * appType = 1 => SIM 9031 */ 9032 appType = 1; 9033 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9034 } 9035 logv("Raw Response - " + tmResponse); 9036 9037 if (tmResponse != null && tmResponse.length() > 4) { 9038 byte[] result = android.util.Base64.decode(tmResponse, 9039 android.util.Base64.DEFAULT); 9040 logv("Hex Response -" + makeHex(result)); 9041 int sres_len = result[0]; 9042 String sres = makeHex(result, 1, sres_len); 9043 int kc_offset = 1+sres_len; 9044 int kc_len = result[kc_offset]; 9045 String kc = makeHex(result, 1+kc_offset, kc_len); 9046 sb.append(":" + kc + ":" + sres); 9047 logv("kc:" + kc + " sres:" + sres); 9048 } else { 9049 loge("bad response - " + tmResponse); 9050 } 9051 } 9052 9053 String response = sb.toString(); 9054 logv("Supplicant Response -" + response); 9055 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9056 } else { 9057 loge("could not get telephony manager"); 9058 } 9059 } 9060 9061 void handle3GAuthRequest(SimAuthRequestData requestData) { 9062 StringBuilder sb = new StringBuilder(); 9063 byte[] rand = null; 9064 byte[] authn = null; 9065 String res_type = "UMTS-AUTH"; 9066 9067 if (targetWificonfiguration == null 9068 || targetWificonfiguration.networkId == requestData.networkId) { 9069 logd("id matches targetWifiConfiguration"); 9070 } else { 9071 logd("id does not match targetWifiConfiguration"); 9072 return; 9073 } 9074 if (requestData.data.length == 2) { 9075 try { 9076 rand = parseHex(requestData.data[0]); 9077 authn = parseHex(requestData.data[1]); 9078 } catch (NumberFormatException e) { 9079 loge("malformed challenge"); 9080 } 9081 } else { 9082 loge("malformed challenge"); 9083 } 9084 9085 String tmResponse = ""; 9086 if (rand != null && authn != null) { 9087 String base64Challenge = android.util.Base64.encodeToString( 9088 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9089 9090 TelephonyManager tm = (TelephonyManager) 9091 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9092 if (tm != null) { 9093 int appType = 2; // 2 => USIM 9094 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9095 logv("Raw Response - " + tmResponse); 9096 } else { 9097 loge("could not get telephony manager"); 9098 } 9099 } 9100 9101 if (tmResponse != null && tmResponse.length() > 4) { 9102 byte[] result = android.util.Base64.decode(tmResponse, 9103 android.util.Base64.DEFAULT); 9104 loge("Hex Response - " + makeHex(result)); 9105 byte tag = result[0]; 9106 if (tag == (byte) 0xdb) { 9107 logv("successful 3G authentication "); 9108 int res_len = result[1]; 9109 String res = makeHex(result, 2, res_len); 9110 int ck_len = result[res_len + 2]; 9111 String ck = makeHex(result, res_len + 3, ck_len); 9112 int ik_len = result[res_len + ck_len + 3]; 9113 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9114 sb.append(":" + ik + ":" + ck + ":" + res); 9115 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9116 } else if (tag == (byte) 0xdc) { 9117 loge("synchronisation failure"); 9118 int auts_len = result[1]; 9119 String auts = makeHex(result, 2, auts_len); 9120 res_type = "UMTS-AUTS"; 9121 sb.append(":" + auts); 9122 logv("auts:" + auts); 9123 } else { 9124 loge("bad response - unknown tag = " + tag); 9125 return; 9126 } 9127 } else { 9128 loge("bad response - " + tmResponse); 9129 return; 9130 } 9131 9132 String response = sb.toString(); 9133 logv("Supplicant Response -" + response); 9134 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9135 } 9136} 9137