WifiStateMachine.java revision 486cc89df3277ce7c7ace55fdfd02ae24ce0d665
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.PendingIntent; 37import android.app.backup.IBackupManager; 38import android.bluetooth.BluetoothAdapter; 39import android.content.BroadcastReceiver; 40import android.content.Context; 41import android.content.Intent; 42import android.content.IntentFilter; 43import android.content.pm.PackageManager; 44import android.database.ContentObserver; 45import android.net.ConnectivityManager; 46import android.net.DhcpResults; 47import android.net.BaseDhcpStateMachine; 48import android.net.DhcpStateMachine; 49import android.net.dhcp.DhcpClient; 50import android.net.InterfaceConfiguration; 51import android.net.LinkAddress; 52import android.net.LinkProperties; 53import android.net.NetworkAgent; 54import android.net.NetworkCapabilities; 55import android.net.NetworkFactory; 56import android.net.NetworkInfo; 57import android.net.NetworkInfo.DetailedState; 58import android.net.NetworkRequest; 59import android.net.NetworkUtils; 60import android.net.RouteInfo; 61import android.net.StaticIpConfiguration; 62import android.net.TrafficStats; 63import android.net.wifi.RssiPacketCountInfo; 64import android.net.wifi.ScanResult; 65import android.net.wifi.ScanSettings; 66import android.net.wifi.SupplicantState; 67import android.net.wifi.WifiChannel; 68import android.net.wifi.WifiConfiguration; 69import android.net.wifi.WifiConnectionStatistics; 70import android.net.wifi.WifiEnterpriseConfig; 71import android.net.wifi.WifiInfo; 72import android.net.wifi.WifiLinkLayerStats; 73import android.net.wifi.WifiManager; 74import android.net.wifi.WifiScanner; 75import android.net.wifi.WifiSsid; 76import android.net.wifi.WpsInfo; 77import android.net.wifi.WpsResult; 78import android.net.wifi.WpsResult.Status; 79import android.net.wifi.p2p.IWifiP2pManager; 80import android.os.BatteryStats; 81import android.os.Bundle; 82import android.os.IBinder; 83import android.os.INetworkManagementService; 84import android.os.Looper; 85import android.os.Message; 86import android.os.Messenger; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.ServiceManager; 91import android.os.SystemClock; 92import android.os.SystemProperties; 93import android.os.UserHandle; 94import android.os.WorkSource; 95import android.provider.Settings; 96import android.telephony.TelephonyManager; 97import android.text.TextUtils; 98import android.util.Log; 99import android.util.LruCache; 100 101import com.android.internal.R; 102import com.android.internal.app.IBatteryStats; 103import com.android.internal.util.AsyncChannel; 104import com.android.internal.util.Protocol; 105import com.android.internal.util.State; 106import com.android.internal.util.StateMachine; 107import com.android.server.net.NetlinkTracker; 108import com.android.server.wifi.hotspot2.NetworkDetail; 109import com.android.server.wifi.hotspot2.SupplicantBridge; 110import com.android.server.wifi.hotspot2.Utils; 111import com.android.server.wifi.p2p.WifiP2pServiceImpl; 112 113import java.io.BufferedReader; 114import java.io.FileDescriptor; 115import java.io.FileNotFoundException; 116import java.io.FileReader; 117import java.io.IOException; 118import java.io.PrintWriter; 119import java.net.Inet4Address; 120import java.net.InetAddress; 121import java.util.ArrayList; 122import java.util.Calendar; 123import java.util.HashSet; 124import java.util.LinkedList; 125import java.util.List; 126import java.util.Locale; 127import java.util.Queue; 128import java.util.Random; 129import java.util.concurrent.atomic.AtomicBoolean; 130import java.util.concurrent.atomic.AtomicInteger; 131import java.util.regex.Pattern; 132 133/** 134 * Track the state of Wifi connectivity. All event handling is done here, 135 * and all changes in connectivity state are initiated here. 136 * 137 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 138 * In the current implementation, we support concurrent wifi p2p and wifi operation. 139 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 140 * handles p2p operation. 141 * 142 * @hide 143 */ 144public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler { 145 146 private static final String NETWORKTYPE = "WIFI"; 147 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 148 private static boolean DBG = false; 149 private static boolean VDBG = false; 150 private static boolean VVDBG = false; 151 private static boolean USE_PAUSE_SCANS = false; 152 private static boolean mLogMessages = false; 153 private static final String TAG = "WifiStateMachine"; 154 155 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 156 157 private static final String GOOGLE_OUI = "DA-A1-19"; 158 159 /* temporary debug flag - best network selection development */ 160 private static boolean PDBG = false; 161 162 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 163 * the corresponding BSSID. 164 */ 165 private boolean didBlackListBSSID = false; 166 167 /** 168 * Log with error attribute 169 * 170 * @param s is string log 171 */ 172 protected void loge(String s) { 173 Log.e(getName(), s); 174 } 175 protected void log(String s) { 176 Log.e(getName(), s); 177 } 178 179 private WifiMonitor mWifiMonitor; 180 private WifiNative mWifiNative; 181 private WifiConfigStore mWifiConfigStore; 182 private WifiAutoJoinController mWifiAutoJoinController; 183 private INetworkManagementService mNwService; 184 private ConnectivityManager mCm; 185 private WifiLogger mWifiLogger; 186 187 private final boolean mP2pSupported; 188 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 189 private boolean mTemporarilyDisconnectWifi = false; 190 private final String mPrimaryDeviceType; 191 192 /* Scan results handling */ 193 private List<ScanDetail> mScanResults = new ArrayList<>(); 194 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 195 private static final int SCAN_RESULT_CACHE_SIZE = 160; 196 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 197 // For debug, number of known scan results that were found as part of last scan result event, 198 // as well the number of scans results returned by the supplicant with that message 199 private int mNumScanResultsKnown; 200 private int mNumScanResultsReturned; 201 202 private boolean mScreenOn = false; 203 204 /* Chipset supports background scan */ 205 private final boolean mBackgroundScanSupported; 206 207 private String mInterfaceName; 208 /* Tethering interface could be separate from wlan interface */ 209 private String mTetherInterfaceName; 210 211 private int mLastSignalLevel = -1; 212 private String mLastBssid; 213 private int mLastNetworkId; // The network Id we successfully joined 214 private boolean linkDebouncing = false; 215 216 private boolean mHalBasedPnoDriverSupported = false; 217 218 // Below booleans are configurations coming from the Developper Settings 219 private boolean mEnableAssociatedNetworkSwitchingInDevSettings = true; 220 private boolean mHalBasedPnoEnableInDevSettings = false; 221 222 223 private int mHalFeatureSet = 0; 224 private static int mPnoResultFound = 0; 225 226 @Override 227 public void onPnoNetworkFound(ScanResult results[]) { 228 if (DBG) { 229 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 230 for (int i = 0; i < results.length; i++) { 231 Log.e(TAG, results[i].toString()); 232 } 233 } 234 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 235 } 236 237 public void processPnoNetworkFound(ScanResult results[]) { 238 ScanSettings settings = new ScanSettings(); 239 settings.channelSet = new ArrayList<WifiChannel>(); 240 StringBuilder sb = new StringBuilder(); 241 sb.append(""); 242 for (int i=0; i<results.length; i++) { 243 WifiChannel channel = new WifiChannel(); 244 channel.freqMHz = results[i].frequency; 245 settings.channelSet.add(channel); 246 sb.append(results[i].SSID).append(" "); 247 } 248 249 stopPnoOffload(); 250 251 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 252 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 253 mPnoResultFound ++; 254 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 255 int delay = 30 * 1000; 256 // reconfigure Pno after 1 minutes if we're still in disconnected state 257 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 258 mRestartAutoJoinOffloadCounter, " processPnoNetworkFound " + sb.toString(), 259 (long)delay); 260 mRestartAutoJoinOffloadCounter++; 261 } 262 263 // Testing various network disconnect cases by sending lots of spurious 264 // disconnect to supplicant 265 private boolean testNetworkDisconnect = false; 266 267 private boolean mEnableRssiPolling = false; 268 private boolean mLegacyPnoEnabled = false; 269 private int mRssiPollToken = 0; 270 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 271 * In CONNECT_MODE, the STA can scan and connect to an access point 272 * In SCAN_ONLY_MODE, the STA can only scan for access points 273 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 274 */ 275 private int mOperationalMode = CONNECT_MODE; 276 private boolean mIsScanOngoing = false; 277 private boolean mIsFullScanOngoing = false; 278 private boolean mSendScanResultsBroadcast = false; 279 280 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 281 private WorkSource mScanWorkSource = null; 282 private static final int UNKNOWN_SCAN_SOURCE = -1; 283 private static final int SCAN_ALARM_SOURCE = -2; 284 private static final int ADD_OR_UPDATE_SOURCE = -3; 285 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 286 private static final int ENABLE_WIFI = -5; 287 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 288 public static final int PNO_NETWORK_FOUND_SOURCE = -7; 289 290 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 291 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 292 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 293 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 294 295 /* Tracks if state machine has received any screen state change broadcast yet. 296 * We can miss one of these at boot. 297 */ 298 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 299 300 private boolean mBluetoothConnectionActive = false; 301 302 private PowerManager.WakeLock mSuspendWakeLock; 303 304 /** 305 * Interval in milliseconds between polling for RSSI 306 * and linkspeed information 307 */ 308 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 309 310 /** 311 * Interval in milliseconds between receiving a disconnect event 312 * while connected to a good AP, and handling the disconnect proper 313 */ 314 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 315 316 /** 317 * Delay between supplicant restarts upon failure to establish connection 318 */ 319 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 320 321 /** 322 * Number of times we attempt to restart supplicant 323 */ 324 private static final int SUPPLICANT_RESTART_TRIES = 5; 325 326 private int mSupplicantRestartCount = 0; 327 /* Tracks sequence number on stop failure message */ 328 private int mSupplicantStopFailureToken = 0; 329 330 /** 331 * Tether state change notification time out 332 */ 333 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 334 335 /* Tracks sequence number on a tether notification time out */ 336 private int mTetherToken = 0; 337 338 /** 339 * Driver start time out. 340 */ 341 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 342 343 /* Tracks sequence number on a driver time out */ 344 private int mDriverStartToken = 0; 345 346 /** 347 * The link properties of the wifi interface. 348 * Do not modify this directly; use updateLinkProperties instead. 349 */ 350 private LinkProperties mLinkProperties; 351 352 /* Tracks sequence number on a periodic scan message */ 353 private int mPeriodicScanToken = 0; 354 355 // Wakelock held during wifi start/stop and driver load/unload 356 private PowerManager.WakeLock mWakeLock; 357 358 private Context mContext; 359 360 private final Object mDhcpResultsLock = new Object(); 361 private DhcpResults mDhcpResults; 362 private WifiInfo mWifiInfo; 363 private NetworkInfo mNetworkInfo; 364 private NetworkCapabilities mNetworkCapabilities; 365 private SupplicantStateTracker mSupplicantStateTracker; 366 private BaseDhcpStateMachine mDhcpStateMachine; 367 private boolean mDhcpActive = false; 368 369 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 370 371 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 372 373 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 374 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 375 376 // Roaming failure count 377 private int mRoamFailCount = 0; 378 379 // This is the BSSID we are trying to associate to, it can be set to "any" 380 // if we havent selected a BSSID for joining. 381 // if we havent selected a BSSID for joining. 382 // The BSSID we are associated to is found in mWifiInfo 383 private String mTargetRoamBSSID = "any"; 384 385 private long mLastDriverRoamAttempt = 0; 386 387 private WifiConfiguration targetWificonfiguration = null; 388 389 // Used as debug to indicate which configuration last was saved 390 private WifiConfiguration lastSavedConfigurationAttempt = null; 391 392 // Used as debug to indicate which configuration last was removed 393 private WifiConfiguration lastForgetConfigurationAttempt = null; 394 395 //Random used by softAP channel Selection 396 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 397 398 boolean isRoaming() { 399 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 400 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 401 } 402 403 public void autoRoamSetBSSID(int netId, String bssid) { 404 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 405 } 406 407 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 408 boolean ret = true; 409 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 410 if (bssid == null) bssid = "any"; 411 if (config == null) return false; // Nothing to do 412 413 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 414 return false; // We didnt change anything 415 } 416 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 417 // Changing to ANY 418 if (!mWifiConfigStore.roamOnAny) { 419 ret = false; // Nothing to do 420 } 421 } 422 if (VDBG) { 423 loge("autoRoamSetBSSID " + bssid 424 + " key=" + config.configKey()); 425 } 426 config.autoJoinBSSID = bssid; 427 mTargetRoamBSSID = bssid; 428 mWifiConfigStore.saveWifiConfigBSSID(config); 429 return ret; 430 } 431 432 /** 433 * Subset of link properties coming from netlink. 434 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 435 * and domains obtained from router advertisements (RFC 6106). 436 */ 437 private NetlinkTracker mNetlinkTracker; 438 439 private AlarmManager mAlarmManager; 440 private PendingIntent mScanIntent; 441 private PendingIntent mDriverStopIntent; 442 443 /* Tracks current frequency mode */ 444 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 445 446 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 447 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 448 449 // Channel for sending replies. 450 private AsyncChannel mReplyChannel = new AsyncChannel(); 451 452 private WifiP2pServiceImpl mWifiP2pServiceImpl; 453 454 // Used to initiate a connection with WifiP2pService 455 private AsyncChannel mWifiP2pChannel; 456 private AsyncChannel mWifiApConfigChannel; 457 458 private WifiScanner mWifiScanner; 459 460 private int mConnectionRequests = 0; 461 private WifiNetworkFactory mNetworkFactory; 462 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 463 private WifiNetworkAgent mNetworkAgent; 464 465 private String[] mWhiteListedSsids = null; 466 467 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 468 // We should really persist that into the networkHistory.txt file, and read it back when 469 // WifiStateMachine starts up 470 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 471 472 // Used to filter out requests we couldn't possibly satisfy. 473 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 474 475 /* The base for wifi message types */ 476 static final int BASE = Protocol.BASE_WIFI; 477 /* Start the supplicant */ 478 static final int CMD_START_SUPPLICANT = BASE + 11; 479 /* Stop the supplicant */ 480 static final int CMD_STOP_SUPPLICANT = BASE + 12; 481 /* Start the driver */ 482 static final int CMD_START_DRIVER = BASE + 13; 483 /* Stop the driver */ 484 static final int CMD_STOP_DRIVER = BASE + 14; 485 /* Indicates Static IP succeeded */ 486 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 487 /* Indicates Static IP failed */ 488 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 489 /* Indicates supplicant stop failed */ 490 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 491 /* Delayed stop to avoid shutting down driver too quick*/ 492 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 493 /* A delayed message sent to start driver when it fail to come up */ 494 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 495 496 /* Start the soft access point */ 497 static final int CMD_START_AP = BASE + 21; 498 /* Indicates soft ap start succeeded */ 499 static final int CMD_START_AP_SUCCESS = BASE + 22; 500 /* Indicates soft ap start failed */ 501 static final int CMD_START_AP_FAILURE = BASE + 23; 502 /* Stop the soft access point */ 503 static final int CMD_STOP_AP = BASE + 24; 504 /* Set the soft access point configuration */ 505 static final int CMD_SET_AP_CONFIG = BASE + 25; 506 /* Soft access point configuration set completed */ 507 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 508 /* Request the soft access point configuration */ 509 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 510 /* Response to access point configuration request */ 511 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 512 /* Invoked when getting a tether state change notification */ 513 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 514 /* A delayed message sent to indicate tether state change failed to arrive */ 515 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 516 517 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 518 519 /* Supplicant commands */ 520 /* Is supplicant alive ? */ 521 static final int CMD_PING_SUPPLICANT = BASE + 51; 522 /* Add/update a network configuration */ 523 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 524 /* Delete a network */ 525 static final int CMD_REMOVE_NETWORK = BASE + 53; 526 /* Enable a network. The device will attempt a connection to the given network. */ 527 static final int CMD_ENABLE_NETWORK = BASE + 54; 528 /* Enable all networks */ 529 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 530 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 531 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 532 /* Clear the blacklist network list */ 533 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 534 /* Save configuration */ 535 static final int CMD_SAVE_CONFIG = BASE + 58; 536 /* Get configured networks */ 537 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 538 /* Get available frequencies */ 539 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 540 /* Get adaptors */ 541 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 542 /* Get configured networks with real preSharedKey */ 543 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 544 /* Get Link Layer Stats thru HAL */ 545 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 546 /* Supplicant commands after driver start*/ 547 /* Initiate a scan */ 548 static final int CMD_START_SCAN = BASE + 71; 549 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 550 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 551 /* Disconnect from a network */ 552 static final int CMD_DISCONNECT = BASE + 73; 553 /* Reconnect to a network */ 554 static final int CMD_RECONNECT = BASE + 74; 555 /* Reassociate to a network */ 556 static final int CMD_REASSOCIATE = BASE + 75; 557 /* Get Connection Statistis */ 558 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 559 560 /* Controls suspend mode optimizations 561 * 562 * When high perf mode is enabled, suspend mode optimizations are disabled 563 * 564 * When high perf mode is disabled, suspend mode optimizations are enabled 565 * 566 * Suspend mode optimizations include: 567 * - packet filtering 568 * - turn off roaming 569 * - DTIM wake up settings 570 */ 571 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 572 /* Set the country code */ 573 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 574 /* Enables RSSI poll */ 575 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 576 /* RSSI poll */ 577 static final int CMD_RSSI_POLL = BASE + 83; 578 /* Set up packet filtering */ 579 static final int CMD_START_PACKET_FILTERING = BASE + 84; 580 /* Clear packet filter */ 581 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 582 /* Enable suspend mode optimizations in the driver */ 583 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 584 /* Delayed NETWORK_DISCONNECT */ 585 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 586 /* When there are no saved networks, we do a periodic scan to notify user of 587 * an open network */ 588 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 589 /* Test network Disconnection NETWORK_DISCONNECT */ 590 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 591 592 private int testNetworkDisconnectCounter = 0; 593 594 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 595 static final int MULTICAST_V6 = 1; 596 static final int MULTICAST_V4 = 0; 597 598 /* Set the frequency band */ 599 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 600 /* Enable TDLS on a specific MAC address */ 601 static final int CMD_ENABLE_TDLS = BASE + 92; 602 /* DHCP/IP configuration watchdog */ 603 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 604 605 /** 606 * Watchdog for protecting against b/16823537 607 * Leave time for 4-ways handshake to succeed 608 */ 609 static final int ROAM_GUARD_TIMER_MSEC = 15000; 610 611 int roamWatchdogCount = 0; 612 /* Roam state watchdog */ 613 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 614 /* Screen change intent handling */ 615 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 616 617 /* Disconnecting state watchdog */ 618 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 619 620 /* Disable an ephemeral network */ 621 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 622 623 /* Get matching network */ 624 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 625 626 /* alert from firmware */ 627 static final int CMD_FIRMWARE_ALERT = BASE + 100; 628 629 /** 630 * Make this timer 40 seconds, which is about the normal DHCP timeout. 631 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 632 * for more than 30 seconds. 633 */ 634 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 635 636 int obtainingIpWatchdogCount = 0; 637 638 /* Commands from/to the SupplicantStateTracker */ 639 /* Reset the supplicant state tracker */ 640 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 641 642 int disconnectingWatchdogCount = 0; 643 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 644 645 /* P2p commands */ 646 /* We are ok with no response here since we wont do much with it anyway */ 647 public static final int CMD_ENABLE_P2P = BASE + 131; 648 /* In order to shut down supplicant cleanly, we wait till p2p has 649 * been disabled */ 650 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 651 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 652 653 public static final int CMD_BOOT_COMPLETED = BASE + 134; 654 655 /* We now have a valid IP configuration. */ 656 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 657 /* We no longer have a valid IP configuration. */ 658 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 659 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 660 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 661 662 /* Supplicant is trying to associate to a given BSSID */ 663 static final int CMD_TARGET_BSSID = BASE + 141; 664 665 /* Reload all networks and reconnect */ 666 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 667 668 static final int CMD_AUTO_CONNECT = BASE + 143; 669 670 static final int network_status_unwanted_disconnect = 0; 671 static final int network_status_unwanted_disable_autojoin = 1; 672 673 static final int CMD_UNWANTED_NETWORK = BASE + 144; 674 675 static final int CMD_AUTO_ROAM = BASE + 145; 676 677 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 678 679 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 680 681 static final int CMD_NETWORK_STATUS = BASE + 148; 682 683 /* used to restart PNO when it was stopped due to association attempt */ 684 static final int CMD_RESTART_AUTOJOIN_OFFLOAD = BASE + 149; 685 686 static int mRestartAutoJoinOffloadCounter = 0; 687 688 /* used to log if PNO was started */ 689 static final int CMD_STARTED_PNO_DBG = BASE + 150; 690 691 static final int CMD_PNO_NETWORK_FOUND = BASE + 151; 692 693 static final int CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION = BASE + 152; 694 695 /* used to log if GSCAN was started */ 696 static final int CMD_STARTED_GSCAN_DBG = BASE + 153; 697 698 699 /* Wifi state machine modes of operation */ 700 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 701 public static final int CONNECT_MODE = 1; 702 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 703 public static final int SCAN_ONLY_MODE = 2; 704 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 705 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 706 707 private static final int SUCCESS = 1; 708 private static final int FAILURE = -1; 709 710 /* Tracks if suspend optimizations need to be disabled by DHCP, 711 * screen or due to high perf mode. 712 * When any of them needs to disable it, we keep the suspend optimizations 713 * disabled 714 */ 715 private int mSuspendOptNeedsDisabled = 0; 716 717 private static final int SUSPEND_DUE_TO_DHCP = 1; 718 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; 719 private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; 720 721 /* Tracks if user has enabled suspend optimizations through settings */ 722 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 723 724 /** 725 * Default framework scan interval in milliseconds. This is used in the scenario in which 726 * wifi chipset does not support background scanning to set up a 727 * periodic wake up scan so that the device can connect to a new access 728 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 729 * override this. 730 */ 731 private final int mDefaultFrameworkScanIntervalMs; 732 733 734 /** 735 * Scan period for the NO_NETWORKS_PERIIDOC_SCAN_FEATURE 736 */ 737 private final int mNoNetworksPeriodicScan; 738 739 /** 740 * Supplicant scan interval in milliseconds. 741 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 742 * from the default config if the setting is not set 743 */ 744 private long mSupplicantScanIntervalMs; 745 746 /** 747 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 748 */ 749 private long lastFullBandConnectedTimeMilli; 750 751 /** 752 * time interval to the next full band scan we will perform for 753 * autojoin while connected with screen lit 754 */ 755 private long fullBandConnectedTimeIntervalMilli; 756 757 /** 758 * max time interval to the next full band scan we will perform for 759 * autojoin while connected with screen lit 760 * Max time is 5 minutes 761 */ 762 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 763 764 /** 765 * Minimum time interval between enabling all networks. 766 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 767 * due to enabling every time. We add a threshold to avoid this. 768 */ 769 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 770 private long mLastEnableAllNetworksTime; 771 772 int mRunningBeaconCount = 0; 773 774 /** 775 * Starting and shutting down driver too quick causes problems leading to driver 776 * being in a bad state. Delay driver stop. 777 */ 778 private final int mDriverStopDelayMs; 779 private int mDelayedStopCounter; 780 private boolean mInDelayedStop = false; 781 782 // there is a delay between StateMachine change country code and Supplicant change country code 783 // here save the current WifiStateMachine set country code 784 private volatile String mSetCountryCode = null; 785 786 // Supplicant doesn't like setting the same country code multiple times (it may drop 787 // currently connected network), so we save the current device set country code here to avoid 788 // redundency 789 private String mDriverSetCountryCode = null; 790 791 /* Default parent state */ 792 private State mDefaultState = new DefaultState(); 793 /* Temporary initial state */ 794 private State mInitialState = new InitialState(); 795 /* Driver loaded, waiting for supplicant to start */ 796 private State mSupplicantStartingState = new SupplicantStartingState(); 797 /* Driver loaded and supplicant ready */ 798 private State mSupplicantStartedState = new SupplicantStartedState(); 799 /* Waiting for supplicant to stop and monitor to exit */ 800 private State mSupplicantStoppingState = new SupplicantStoppingState(); 801 /* Driver start issued, waiting for completed event */ 802 private State mDriverStartingState = new DriverStartingState(); 803 /* Driver started */ 804 private State mDriverStartedState = new DriverStartedState(); 805 /* Wait until p2p is disabled 806 * This is a special state which is entered right after we exit out of DriverStartedState 807 * before transitioning to another state. 808 */ 809 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 810 /* Driver stopping */ 811 private State mDriverStoppingState = new DriverStoppingState(); 812 /* Driver stopped */ 813 private State mDriverStoppedState = new DriverStoppedState(); 814 /* Scan for networks, no connection will be established */ 815 private State mScanModeState = new ScanModeState(); 816 /* Connecting to an access point */ 817 private State mConnectModeState = new ConnectModeState(); 818 /* Connected at 802.11 (L2) level */ 819 private State mL2ConnectedState = new L2ConnectedState(); 820 /* fetching IP after connection to access point (assoc+auth complete) */ 821 private State mObtainingIpState = new ObtainingIpState(); 822 /* Waiting for link quality verification to be complete */ 823 private State mVerifyingLinkState = new VerifyingLinkState(); 824 /* Connected with IP addr */ 825 private State mConnectedState = new ConnectedState(); 826 /* Roaming */ 827 private State mRoamingState = new RoamingState(); 828 /* disconnect issued, waiting for network disconnect confirmation */ 829 private State mDisconnectingState = new DisconnectingState(); 830 /* Network is not connected, supplicant assoc+auth is not complete */ 831 private State mDisconnectedState = new DisconnectedState(); 832 /* Waiting for WPS to be completed*/ 833 private State mWpsRunningState = new WpsRunningState(); 834 835 /* Soft ap is starting up */ 836 private State mSoftApStartingState = new SoftApStartingState(); 837 /* Soft ap is running */ 838 private State mSoftApStartedState = new SoftApStartedState(); 839 /* Soft ap is running and we are waiting for tether notification */ 840 private State mTetheringState = new TetheringState(); 841 /* Soft ap is running and we are tethered through connectivity service */ 842 private State mTetheredState = new TetheredState(); 843 /* Waiting for untether confirmation before stopping soft Ap */ 844 private State mUntetheringState = new UntetheringState(); 845 846 847 848 private class WifiScanListener implements WifiScanner.ScanListener { 849 @Override 850 public void onSuccess() { 851 Log.e(TAG, "WifiScanListener onSuccess"); 852 }; 853 @Override 854 public void onFailure(int reason, String description) { 855 Log.e(TAG, "WifiScanListener onFailure"); 856 }; 857 @Override 858 public void onPeriodChanged(int periodInMs) { 859 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 860 } 861 @Override 862 public void onResults(ScanResult[] results) { 863 Log.e(TAG, "WifiScanListener onResults" + results.length); 864 } 865 @Override 866 public void onResults(WifiScanner.ScanData[] results) { 867 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 868 } 869 @Override 870 public void onFullResult(ScanResult fullScanResult) { 871 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 872 } 873 874 WifiScanListener() {} 875 } 876 877 WifiScanListener mWifiScanListener = new WifiScanListener(); 878 879 880 private class TetherStateChange { 881 ArrayList<String> available; 882 ArrayList<String> active; 883 884 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 885 available = av; 886 active = ac; 887 } 888 } 889 890 public static class SimAuthRequestData { 891 int networkId; 892 int protocol; 893 String ssid; 894 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 895 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 896 String[] data; 897 } 898 899 /** 900 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 901 * {@link WifiManager#WIFI_STATE_DISABLING}, 902 * {@link WifiManager#WIFI_STATE_ENABLED}, 903 * {@link WifiManager#WIFI_STATE_ENABLING}, 904 * {@link WifiManager#WIFI_STATE_UNKNOWN} 905 */ 906 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 907 908 /** 909 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 910 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 911 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 912 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 913 * {@link WifiManager#WIFI_AP_STATE_FAILED} 914 */ 915 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 916 917 private static final int SCAN_REQUEST = 0; 918 private static final String ACTION_START_SCAN = 919 "com.android.server.WifiManager.action.START_SCAN"; 920 921 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 922 private static final int DRIVER_STOP_REQUEST = 0; 923 private static final String ACTION_DELAYED_DRIVER_STOP = 924 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 925 926 /** 927 * Keep track of whether WIFI is running. 928 */ 929 private boolean mIsRunning = false; 930 931 /** 932 * Keep track of whether we last told the battery stats we had started. 933 */ 934 private boolean mReportedRunning = false; 935 936 /** 937 * Most recently set source of starting WIFI. 938 */ 939 private final WorkSource mRunningWifiUids = new WorkSource(); 940 941 /** 942 * The last reported UIDs that were responsible for starting WIFI. 943 */ 944 private final WorkSource mLastRunningWifiUids = new WorkSource(); 945 946 private final IBatteryStats mBatteryStats; 947 948 private String mTcpBufferSizes = null; 949 950 // Used for debug and stats gathering 951 private static int sScanAlarmIntentCount = 0; 952 953 final static int frameworkMinScanIntervalSaneValue = 10000; 954 955 boolean mPnoEnabled; 956 boolean mLazyRoamEnabled; 957 long mGScanStartTimeMilli; 958 long mGScanPeriodMilli; 959 960 public WifiStateMachine(Context context, String wlanInterface, 961 WifiTrafficPoller trafficPoller) { 962 super("WifiStateMachine"); 963 mContext = context; 964 mSetCountryCode = Settings.Global.getString( 965 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 966 mInterfaceName = wlanInterface; 967 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 968 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 969 BatteryStats.SERVICE_NAME)); 970 971 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 972 mNwService = INetworkManagementService.Stub.asInterface(b); 973 974 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 975 PackageManager.FEATURE_WIFI_DIRECT); 976 977 mWifiNative = new WifiNative(mInterfaceName); 978 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 979 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 980 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 981 mWifiMonitor = new WifiMonitor(this, mWifiNative); 982 mWifiLogger = new WifiLogger(this); 983 984 mWifiInfo = new WifiInfo(); 985 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 986 getHandler()); 987 mLinkProperties = new LinkProperties(); 988 989 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 990 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 991 992 mNetworkInfo.setIsAvailable(false); 993 mLastBssid = null; 994 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 995 mLastSignalLevel = -1; 996 997 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 998 public void update() { 999 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1000 } 1001 }); 1002 try { 1003 mNwService.registerObserver(mNetlinkTracker); 1004 } catch (RemoteException e) { 1005 loge("Couldn't register netlink tracker: " + e.toString()); 1006 } 1007 1008 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1009 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1010 1011 // Make sure the interval is not configured less than 10 seconds 1012 int period = mContext.getResources().getInteger( 1013 R.integer.config_wifi_framework_scan_interval); 1014 if (period < frameworkMinScanIntervalSaneValue) { 1015 period = frameworkMinScanIntervalSaneValue; 1016 } 1017 mDefaultFrameworkScanIntervalMs = period; 1018 1019 mNoNetworksPeriodicScan = mContext.getResources().getInteger( 1020 R.integer.config_wifi_no_network_periodic_scan_interval); 1021 1022 mDriverStopDelayMs = mContext.getResources().getInteger( 1023 R.integer.config_wifi_driver_stop_delay); 1024 1025 mBackgroundScanSupported = mContext.getResources().getBoolean( 1026 R.bool.config_wifi_background_scan_support); 1027 1028 mPrimaryDeviceType = mContext.getResources().getString( 1029 R.string.config_wifi_p2p_device_type); 1030 1031 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1032 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1033 1034 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1035 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1036 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1037 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1038 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1039 // TODO - needs to be a bit more dynamic 1040 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1041 1042 mContext.registerReceiver( 1043 new BroadcastReceiver() { 1044 @Override 1045 public void onReceive(Context context, Intent intent) { 1046 ArrayList<String> available = intent.getStringArrayListExtra( 1047 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1048 ArrayList<String> active = intent.getStringArrayListExtra( 1049 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1050 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1051 } 1052 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1053 1054 mContext.registerReceiver( 1055 new BroadcastReceiver() { 1056 @Override 1057 public void onReceive(Context context, Intent intent) { 1058 sScanAlarmIntentCount++; // Used for debug only 1059 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1060 if (VDBG) 1061 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1062 } 1063 }, 1064 new IntentFilter(ACTION_START_SCAN)); 1065 1066 IntentFilter filter = new IntentFilter(); 1067 filter.addAction(Intent.ACTION_SCREEN_ON); 1068 filter.addAction(Intent.ACTION_SCREEN_OFF); 1069 mContext.registerReceiver( 1070 new BroadcastReceiver() { 1071 @Override 1072 public void onReceive(Context context, Intent intent) { 1073 String action = intent.getAction(); 1074 1075 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1076 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1077 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1078 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1079 } 1080 } 1081 }, filter); 1082 1083 mContext.registerReceiver( 1084 new BroadcastReceiver() { 1085 @Override 1086 public void onReceive(Context context, Intent intent) { 1087 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1088 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1089 } 1090 }, 1091 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1092 1093 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1094 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1095 new ContentObserver(getHandler()) { 1096 @Override 1097 public void onChange(boolean selfChange) { 1098 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1099 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1100 } 1101 }); 1102 1103 mContext.registerReceiver( 1104 new BroadcastReceiver() { 1105 @Override 1106 public void onReceive(Context context, Intent intent) { 1107 sendMessage(CMD_BOOT_COMPLETED); 1108 } 1109 }, 1110 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1111 1112 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1113 1114 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1115 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1116 1117 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1118 mSuspendWakeLock.setReferenceCounted(false); 1119 1120 mTcpBufferSizes = mContext.getResources().getString( 1121 com.android.internal.R.string.config_wifi_tcp_buffers); 1122 1123 addState(mDefaultState); 1124 addState(mInitialState, mDefaultState); 1125 addState(mSupplicantStartingState, mDefaultState); 1126 addState(mSupplicantStartedState, mDefaultState); 1127 addState(mDriverStartingState, mSupplicantStartedState); 1128 addState(mDriverStartedState, mSupplicantStartedState); 1129 addState(mScanModeState, mDriverStartedState); 1130 addState(mConnectModeState, mDriverStartedState); 1131 addState(mL2ConnectedState, mConnectModeState); 1132 addState(mObtainingIpState, mL2ConnectedState); 1133 addState(mVerifyingLinkState, mL2ConnectedState); 1134 addState(mConnectedState, mL2ConnectedState); 1135 addState(mRoamingState, mL2ConnectedState); 1136 addState(mDisconnectingState, mConnectModeState); 1137 addState(mDisconnectedState, mConnectModeState); 1138 addState(mWpsRunningState, mConnectModeState); 1139 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1140 addState(mDriverStoppingState, mSupplicantStartedState); 1141 addState(mDriverStoppedState, mSupplicantStartedState); 1142 addState(mSupplicantStoppingState, mDefaultState); 1143 addState(mSoftApStartingState, mDefaultState); 1144 addState(mSoftApStartedState, mDefaultState); 1145 addState(mTetheringState, mSoftApStartedState); 1146 addState(mTetheredState, mSoftApStartedState); 1147 addState(mUntetheringState, mSoftApStartedState); 1148 1149 setInitialState(mInitialState); 1150 1151 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1152 setLogOnlyTransitions(false); 1153 if (VDBG) setDbg(true); 1154 1155 //start the state machine 1156 start(); 1157 1158 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1159 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1160 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1161 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1162 } 1163 1164 1165 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1166 Intent intent = new Intent(action, null); 1167 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1168 intent.setPackage(this.getClass().getPackage().getName()); 1169 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1170 } 1171 1172 private int mVerboseLoggingLevel = 0; 1173 1174 int getVerboseLoggingLevel() { 1175 return mVerboseLoggingLevel; 1176 } 1177 1178 void enableVerboseLogging(int verbose) { 1179 mVerboseLoggingLevel = verbose; 1180 if (verbose > 0) { 1181 DBG = true; 1182 VDBG = true; 1183 PDBG = true; 1184 mLogMessages = true; 1185 //mWifiNative.setSupplicantLogLevel("DEBUG"); 1186 } else { 1187 DBG = false; 1188 VDBG = false; 1189 PDBG = false; 1190 mLogMessages = false; 1191 mWifiNative.setSupplicantLogLevel("INFO"); 1192 } 1193 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 1194 mWifiAutoJoinController.enableVerboseLogging(verbose); 1195 mWifiMonitor.enableVerboseLogging(verbose); 1196 mWifiNative.enableVerboseLogging(verbose); 1197 mWifiConfigStore.enableVerboseLogging(verbose); 1198 mSupplicantStateTracker.enableVerboseLogging(verbose); 1199 } 1200 1201 public void setHalBasedAutojoinOffload(int enabled) { 1202 // Shoult be used for debug only, triggered form developper settings 1203 // enabling HAl based PNO dynamically is not safe and not a normal operation 1204 mHalBasedPnoEnableInDevSettings = enabled > 0; 1205 mWifiConfigStore.enableHalBasedPno.set(mHalBasedPnoEnableInDevSettings); 1206 mWifiConfigStore.enableSsidWhitelist.set(mHalBasedPnoEnableInDevSettings); 1207 sendMessage(CMD_DISCONNECT); 1208 } 1209 1210 public void setAllowNetworkSwitchingWhileAssociated(int enabled) { 1211 mEnableAssociatedNetworkSwitchingInDevSettings = enabled > 0; 1212 } 1213 1214 int getHalBasedAutojoinOffload() { 1215 return mHalBasedPnoEnableInDevSettings ? 1 : 0; 1216 } 1217 1218 int getAllowNetworkSwitchingWhileAssociated() { 1219 return mEnableAssociatedNetworkSwitchingInDevSettings ? 1 : 0; 1220 } 1221 1222 boolean useHalBasedAutoJoinOffload() { 1223 // all three settings need to be true: 1224 // - developper settings switch 1225 // - driver support 1226 // - config option 1227 return mHalBasedPnoEnableInDevSettings 1228 && mHalBasedPnoDriverSupported 1229 && mWifiConfigStore.enableHalBasedPno.get(); 1230 } 1231 1232 boolean allowFullBandScanAndAssociated() { 1233 1234 if (!mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 1235 if (DBG) { 1236 Log.e(TAG, "allowFullBandScanAndAssociated: " 1237 + " enableAutoJoinScanWhenAssociated : disallow"); 1238 } 1239 return false; 1240 } 1241 1242 if (mWifiInfo.txSuccessRate > 1243 mWifiConfigStore.maxTxPacketForFullScans 1244 || mWifiInfo.rxSuccessRate > 1245 mWifiConfigStore.maxRxPacketForFullScans) { 1246 if (DBG) { 1247 Log.e(TAG, "allowFullBandScanAndAssociated: packet rate tx" 1248 + mWifiInfo.txSuccessRate + " rx " 1249 + mWifiInfo.rxSuccessRate 1250 + " allow scan with traffic " + getAllowScansWithTraffic()); 1251 } 1252 // Too much traffic at the interface, hence no full band scan 1253 if (getAllowScansWithTraffic() == 0) { 1254 return false; 1255 } 1256 } 1257 1258 if (getCurrentState() != mConnectedState) { 1259 if (DBG) { 1260 Log.e(TAG, "allowFullBandScanAndAssociated: getCurrentState() : disallow"); 1261 } 1262 return false; 1263 } 1264 1265 return true; 1266 } 1267 1268 long mLastScanPermissionUpdate = 0; 1269 boolean mConnectedModeGScanOffloadStarted = false; 1270 // Don't do a G-scan enable/re-enable cycle more than once within 20seconds 1271 // The function updateAssociatedScanPermission() can be called quite frequently, hence 1272 // we want to throttle the GScan Stop->Start transition 1273 static final long SCAN_PERMISSION_UPDATE_THROTTLE_MILLI = 20000; 1274 void updateAssociatedScanPermission() { 1275 1276 if (useHalBasedAutoJoinOffload()) { 1277 boolean allowed = allowFullBandScanAndAssociated(); 1278 1279 long now = System.currentTimeMillis(); 1280 if (mConnectedModeGScanOffloadStarted && !allowed) { 1281 if (DBG) { 1282 Log.e(TAG, " useHalBasedAutoJoinOffload stop offload"); 1283 } 1284 stopPnoOffload(); 1285 stopGScan(" useHalBasedAutoJoinOffload"); 1286 } 1287 if (!mConnectedModeGScanOffloadStarted && allowed) { 1288 if ((now - mLastScanPermissionUpdate) > SCAN_PERMISSION_UPDATE_THROTTLE_MILLI) { 1289 // Re-enable Gscan offload, this will trigger periodic scans and allow firmware 1290 // to look for 5GHz BSSIDs and better networks 1291 if (DBG) { 1292 Log.e(TAG, " useHalBasedAutoJoinOffload restart offload"); 1293 } 1294 startGScanConnectedModeOffload("updatePermission " 1295 + (now - mLastScanPermissionUpdate) + "ms"); 1296 mLastScanPermissionUpdate = now; 1297 } 1298 } 1299 } 1300 } 1301 1302 private int mAggressiveHandover = 0; 1303 1304 int getAggressiveHandover() { 1305 return mAggressiveHandover; 1306 } 1307 1308 void enableAggressiveHandover(int enabled) { 1309 mAggressiveHandover = enabled; 1310 } 1311 1312 public void clearANQPCache() { 1313 mWifiConfigStore.trimANQPCache(true); 1314 } 1315 1316 public void setAllowScansWithTraffic(int enabled) { 1317 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1318 } 1319 1320 public int getAllowScansWithTraffic() { 1321 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1322 } 1323 1324 public void setAllowScansWhileAssociated(int enabled) { 1325 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled > 0 ? true : false); 1326 } 1327 1328 public int getAllowScansWhileAssociated() { 1329 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get() ? 1 : 0; 1330 } 1331 1332 /* 1333 * 1334 * Framework scan control 1335 */ 1336 1337 private boolean mAlarmEnabled = false; 1338 1339 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1340 1341 private void setScanAlarm(boolean enabled) { 1342 if (PDBG) { 1343 String state; 1344 if (enabled) state = "enabled"; else state = "disabled"; 1345 loge("setScanAlarm " + state 1346 + " defaultperiod " + mDefaultFrameworkScanIntervalMs 1347 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1348 } 1349 if (mBackgroundScanSupported == false) { 1350 // Scan alarm is only used for background scans if they are not 1351 // offloaded to the wifi chipset, hence enable the scan alarm 1352 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1353 enabled = true; 1354 } 1355 1356 if (enabled == mAlarmEnabled) return; 1357 if (enabled) { 1358 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1359 /* going to wake up the host processor to look for access points */ 1360 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1361 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1362 mScanIntent); 1363 mAlarmEnabled = true; 1364 } else { 1365 mAlarmManager.cancel(mScanIntent); 1366 mAlarmEnabled = false; 1367 } 1368 } 1369 1370 private void cancelDelayedScan() { 1371 mDelayedScanCounter.incrementAndGet(); 1372 } 1373 1374 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1375 ScanSettings settings, WorkSource workSource) { 1376 1377 if (counter != mDelayedScanCounter.get()) { 1378 return false; 1379 } 1380 if (restart) 1381 startDelayedScan(milli, settings, workSource); 1382 return true; 1383 } 1384 1385 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1386 if (milli <= 0) return; 1387 /** 1388 * The cases where the scan alarm should be run are : 1389 * - DisconnectedState && screenOn => used delayed timer 1390 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1391 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1392 * - ConnectedState && screenOn => used delayed timer 1393 */ 1394 1395 mDelayedScanCounter.incrementAndGet(); 1396 if (mScreenOn && 1397 (getCurrentState() == mDisconnectedState 1398 || getCurrentState() == mConnectedState)) { 1399 Bundle bundle = new Bundle(); 1400 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1401 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1402 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1403 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1404 mDelayedScanCounter.get(), bundle, milli); 1405 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1406 } else if (mBackgroundScanSupported == false 1407 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1408 setScanAlarm(true); 1409 if (DBG) loge("startDelayedScan start scan alarm -> " 1410 + mDelayedScanCounter + " milli " + milli); 1411 } else { 1412 if (DBG) loge("startDelayedScan unhandled -> " 1413 + mDelayedScanCounter + " milli " + milli); 1414 } 1415 } 1416 1417 private boolean setRandomMacOui() { 1418 String oui = mContext.getResources().getString( 1419 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1420 String[] ouiParts = oui.split("-"); 1421 byte[] ouiBytes = new byte[3]; 1422 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1423 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1424 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1425 1426 logd("Setting OUI to " + oui); 1427 return mWifiNative.setScanningMacOui(ouiBytes); 1428 } 1429 1430 /** 1431 * ****************************************************** 1432 * Methods exposed for public use 1433 * ****************************************************** 1434 */ 1435 1436 public Messenger getMessenger() { 1437 return new Messenger(getHandler()); 1438 } 1439 1440 public WifiMonitor getWifiMonitor() { 1441 return mWifiMonitor; 1442 } 1443 1444 /** 1445 * TODO: doc 1446 */ 1447 public boolean syncPingSupplicant(AsyncChannel channel) { 1448 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1449 boolean result = (resultMsg.arg1 != FAILURE); 1450 resultMsg.recycle(); 1451 return result; 1452 } 1453 1454 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1455 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1456 List<WifiChannel> list = null; 1457 if (resultMsg.obj != null) { 1458 list = new ArrayList<WifiChannel>(); 1459 String freqs = (String) resultMsg.obj; 1460 String[] lines = freqs.split("\n"); 1461 for (String line : lines) 1462 if (line.contains("MHz")) { 1463 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1464 WifiChannel c = new WifiChannel(); 1465 String[] prop = line.split(" "); 1466 if (prop.length < 5) continue; 1467 try { 1468 c.channelNum = Integer.parseInt(prop[1]); 1469 c.freqMHz = Integer.parseInt(prop[3]); 1470 } catch (NumberFormatException e) { 1471 } 1472 c.isDFS = line.contains("(DFS)"); 1473 list.add(c); 1474 } else if (line.contains("Mode[B] Channels:")) { 1475 // B channels are the same as G channels, skipped 1476 break; 1477 } 1478 } 1479 resultMsg.recycle(); 1480 return (list != null && list.size() > 0) ? list : null; 1481 } 1482 1483 /** 1484 * When settings allowing making use of untrusted networks change, trigger a scan 1485 * so as to kick of autojoin. 1486 */ 1487 public void startScanForUntrustedSettingChange() { 1488 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1489 } 1490 1491 /** 1492 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1493 * given to callingUid. 1494 * 1495 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1496 * workSource is specified. 1497 * @param workSource If not null, blame is given to workSource. 1498 * @param settings Scan settings, see {@link ScanSettings}. 1499 */ 1500 public void startScan(int callingUid, int scanCounter, 1501 ScanSettings settings, WorkSource workSource) { 1502 Bundle bundle = new Bundle(); 1503 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1504 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1505 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1506 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1507 } 1508 1509 // called from BroadcastListener 1510 1511 /** 1512 * Start reading new scan data 1513 * Data comes in as: 1514 * "scancount=5\n" 1515 * "nextcount=5\n" 1516 * "apcount=3\n" 1517 * "trunc\n" (optional) 1518 * "bssid=...\n" 1519 * "ssid=...\n" 1520 * "freq=...\n" (in Mhz) 1521 * "level=...\n" 1522 * "dist=...\n" (in cm) 1523 * "distsd=...\n" (standard deviation, in cm) 1524 * "====" 1525 * "bssid=...\n" 1526 * etc 1527 * "====" 1528 * "bssid=...\n" 1529 * etc 1530 * "%%%%" 1531 * "apcount=2\n" 1532 * "bssid=...\n" 1533 * etc 1534 * "%%%% 1535 * etc 1536 * "----" 1537 */ 1538 private final static boolean DEBUG_PARSE = false; 1539 1540 private long mDisconnectedTimeStamp = 0; 1541 1542 public long getDisconnectedTimeMilli() { 1543 if (getCurrentState() == mDisconnectedState 1544 && mDisconnectedTimeStamp != 0) { 1545 long now_ms = System.currentTimeMillis(); 1546 return now_ms - mDisconnectedTimeStamp; 1547 } 1548 return 0; 1549 } 1550 1551 // Keeping track of scan requests 1552 private long lastStartScanTimeStamp = 0; 1553 private long lastScanDuration = 0; 1554 // Last connect attempt is used to prevent scan requests: 1555 // - for a period of 10 seconds after attempting to connect 1556 private long lastConnectAttempt = 0; 1557 private String lastScanFreqs = null; 1558 1559 // For debugging, keep track of last message status handling 1560 // TODO, find an equivalent mechanism as part of parent class 1561 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1562 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1563 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1564 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1565 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1566 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1567 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1568 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1569 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1570 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1571 1572 private int messageHandlingStatus = 0; 1573 1574 //TODO: this is used only to track connection attempts, however the link state and packet per 1575 //TODO: second logic should be folded into that 1576 private boolean checkOrDeferScanAllowed(Message msg) { 1577 long now = System.currentTimeMillis(); 1578 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1579 Message dmsg = Message.obtain(msg); 1580 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1581 return false; 1582 } 1583 return true; 1584 } 1585 1586 private int mOnTime = 0; 1587 private int mTxTime = 0; 1588 private int mRxTime = 0; 1589 private int mOnTimeStartScan = 0; 1590 private int mTxTimeStartScan = 0; 1591 private int mRxTimeStartScan = 0; 1592 private int mOnTimeScan = 0; 1593 private int mTxTimeScan = 0; 1594 private int mRxTimeScan = 0; 1595 private int mOnTimeThisScan = 0; 1596 private int mTxTimeThisScan = 0; 1597 private int mRxTimeThisScan = 0; 1598 1599 private int mOnTimeScreenStateChange = 0; 1600 private int mOnTimeAtLastReport = 0; 1601 private long lastOntimeReportTimeStamp = 0; 1602 private long lastScreenStateChangeTimeStamp = 0; 1603 private int mOnTimeLastReport = 0; 1604 private int mTxTimeLastReport = 0; 1605 private int mRxTimeLastReport = 0; 1606 1607 private long lastLinkLayerStatsUpdate = 0; 1608 1609 String reportOnTime() { 1610 long now = System.currentTimeMillis(); 1611 StringBuilder sb = new StringBuilder(); 1612 // Report stats since last report 1613 int on = mOnTime - mOnTimeLastReport; 1614 mOnTimeLastReport = mOnTime; 1615 int tx = mTxTime - mTxTimeLastReport; 1616 mTxTimeLastReport = mTxTime; 1617 int rx = mRxTime - mRxTimeLastReport; 1618 mRxTimeLastReport = mRxTime; 1619 int period = (int) (now - lastOntimeReportTimeStamp); 1620 lastOntimeReportTimeStamp = now; 1621 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1622 // Report stats since Screen State Changed 1623 on = mOnTime - mOnTimeScreenStateChange; 1624 period = (int) (now - lastScreenStateChangeTimeStamp); 1625 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1626 return sb.toString(); 1627 } 1628 1629 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1630 WifiLinkLayerStats stats = null; 1631 if (mWifiLinkLayerStatsSupported > 0) { 1632 String name = "wlan0"; 1633 stats = mWifiNative.getWifiLinkLayerStats(name); 1634 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1635 mWifiLinkLayerStatsSupported -= 1; 1636 } else if (stats != null) { 1637 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1638 mOnTime = stats.on_time; 1639 mTxTime = stats.tx_time; 1640 mRxTime = stats.rx_time; 1641 mRunningBeaconCount = stats.beacon_rx; 1642 if (dbg) { 1643 // loge(stats.toString()); 1644 } 1645 } 1646 } 1647 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1648 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1649 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1650 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1651 } else { 1652 mWifiInfo.updatePacketRates(stats); 1653 } 1654 sendMessage(CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION); 1655 return stats; 1656 } 1657 1658 void startRadioScanStats() { 1659 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1660 if (stats != null) { 1661 mOnTimeStartScan = stats.on_time; 1662 mTxTimeStartScan = stats.tx_time; 1663 mRxTimeStartScan = stats.rx_time; 1664 mOnTime = stats.on_time; 1665 mTxTime = stats.tx_time; 1666 mRxTime = stats.rx_time; 1667 } 1668 } 1669 1670 void closeRadioScanStats() { 1671 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1672 if (stats != null) { 1673 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1674 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1675 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1676 mOnTimeScan += mOnTimeThisScan; 1677 mTxTimeScan += mTxTimeThisScan; 1678 mRxTimeScan += mRxTimeThisScan; 1679 } 1680 } 1681 1682 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1683 private void noteScanStart(int callingUid, WorkSource workSource) { 1684 long now = System.currentTimeMillis(); 1685 lastStartScanTimeStamp = now; 1686 lastScanDuration = 0; 1687 if (DBG) { 1688 String ts = String.format("[%,d ms]", now); 1689 if (workSource != null) { 1690 loge(ts + " noteScanStart" + workSource.toString() 1691 + " uid " + Integer.toString(callingUid)); 1692 } else { 1693 loge(ts + " noteScanstart no scan source" 1694 + " uid " + Integer.toString(callingUid)); 1695 } 1696 } 1697 startRadioScanStats(); 1698 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1699 && callingUid != SCAN_ALARM_SOURCE) 1700 || workSource != null)) { 1701 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1702 try { 1703 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1704 } catch (RemoteException e) { 1705 log(e.toString()); 1706 } 1707 } 1708 } 1709 1710 private void noteScanEnd() { 1711 long now = System.currentTimeMillis(); 1712 if (lastStartScanTimeStamp != 0) { 1713 lastScanDuration = now - lastStartScanTimeStamp; 1714 } 1715 lastStartScanTimeStamp = 0; 1716 if (DBG) { 1717 String ts = String.format("[%,d ms]", now); 1718 if (mScanWorkSource != null) 1719 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1720 + " onTime=" + mOnTimeThisScan); 1721 else 1722 loge(ts + " noteScanEnd no scan source" 1723 + " onTime=" + mOnTimeThisScan); 1724 } 1725 if (mScanWorkSource != null) { 1726 try { 1727 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1728 } catch (RemoteException e) { 1729 log(e.toString()); 1730 } finally { 1731 mScanWorkSource = null; 1732 } 1733 } 1734 } 1735 1736 private void handleScanRequest(int type, Message message) { 1737 ScanSettings settings = null; 1738 WorkSource workSource = null; 1739 1740 // unbundle parameters 1741 Bundle bundle = (Bundle) message.obj; 1742 1743 if (bundle != null) { 1744 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1745 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1746 } 1747 1748 // parse scan settings 1749 String freqs = null; 1750 if (settings != null && settings.channelSet != null) { 1751 StringBuilder sb = new StringBuilder(); 1752 boolean first = true; 1753 for (WifiChannel channel : settings.channelSet) { 1754 if (!first) sb.append(','); 1755 else first = false; 1756 sb.append(channel.freqMHz); 1757 } 1758 freqs = sb.toString(); 1759 } 1760 1761 // call wifi native to start the scan 1762 if (startScanNative(type, freqs)) { 1763 // only count battery consumption if scan request is accepted 1764 noteScanStart(message.arg1, workSource); 1765 // a full scan covers everything, clearing scan request buffer 1766 if (freqs == null) 1767 mBufferedScanMsg.clear(); 1768 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1769 if (workSource != null) { 1770 // External worksource was passed along the scan request, 1771 // hence always send a broadcast 1772 mSendScanResultsBroadcast = true; 1773 } 1774 return; 1775 } 1776 1777 // if reach here, scan request is rejected 1778 1779 if (!mIsScanOngoing) { 1780 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1781 1782 // discard this request and pop up the next one 1783 if (mBufferedScanMsg.size() > 0) { 1784 sendMessage(mBufferedScanMsg.remove()); 1785 } 1786 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1787 } else if (!mIsFullScanOngoing) { 1788 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1789 // buffer the scan request to make sure specified channels will be scanned eventually 1790 if (freqs == null) 1791 mBufferedScanMsg.clear(); 1792 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1793 Message msg = obtainMessage(CMD_START_SCAN, 1794 message.arg1, message.arg2, bundle); 1795 mBufferedScanMsg.add(msg); 1796 } else { 1797 // if too many requests in buffer, combine them into a single full scan 1798 bundle = new Bundle(); 1799 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1800 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1801 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1802 mBufferedScanMsg.clear(); 1803 mBufferedScanMsg.add(msg); 1804 } 1805 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1806 } else { 1807 // mIsScanOngoing and mIsFullScanOngoing 1808 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1809 } 1810 } 1811 1812 1813 /** 1814 * return true iff scan request is accepted 1815 */ 1816 private boolean startScanNative(int type, String freqs) { 1817 if (mWifiNative.scan(type, freqs)) { 1818 mIsScanOngoing = true; 1819 mIsFullScanOngoing = (freqs == null); 1820 lastScanFreqs = freqs; 1821 return true; 1822 } 1823 return false; 1824 } 1825 1826 /** 1827 * TODO: doc 1828 */ 1829 public void setSupplicantRunning(boolean enable) { 1830 if (enable) { 1831 sendMessage(CMD_START_SUPPLICANT); 1832 } else { 1833 sendMessage(CMD_STOP_SUPPLICANT); 1834 } 1835 } 1836 1837 /** 1838 * TODO: doc 1839 */ 1840 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1841 if (enable) { 1842 sendMessage(CMD_START_AP, wifiConfig); 1843 } else { 1844 sendMessage(CMD_STOP_AP); 1845 } 1846 } 1847 1848 public void setWifiApConfiguration(WifiConfiguration config) { 1849 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1850 } 1851 1852 public WifiConfiguration syncGetWifiApConfiguration() { 1853 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1854 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1855 resultMsg.recycle(); 1856 return ret; 1857 } 1858 1859 /** 1860 * TODO: doc 1861 */ 1862 public int syncGetWifiState() { 1863 return mWifiState.get(); 1864 } 1865 1866 /** 1867 * TODO: doc 1868 */ 1869 public String syncGetWifiStateByName() { 1870 switch (mWifiState.get()) { 1871 case WIFI_STATE_DISABLING: 1872 return "disabling"; 1873 case WIFI_STATE_DISABLED: 1874 return "disabled"; 1875 case WIFI_STATE_ENABLING: 1876 return "enabling"; 1877 case WIFI_STATE_ENABLED: 1878 return "enabled"; 1879 case WIFI_STATE_UNKNOWN: 1880 return "unknown state"; 1881 default: 1882 return "[invalid state]"; 1883 } 1884 } 1885 1886 /** 1887 * TODO: doc 1888 */ 1889 public int syncGetWifiApState() { 1890 return mWifiApState.get(); 1891 } 1892 1893 /** 1894 * TODO: doc 1895 */ 1896 public String syncGetWifiApStateByName() { 1897 switch (mWifiApState.get()) { 1898 case WIFI_AP_STATE_DISABLING: 1899 return "disabling"; 1900 case WIFI_AP_STATE_DISABLED: 1901 return "disabled"; 1902 case WIFI_AP_STATE_ENABLING: 1903 return "enabling"; 1904 case WIFI_AP_STATE_ENABLED: 1905 return "enabled"; 1906 case WIFI_AP_STATE_FAILED: 1907 return "failed"; 1908 default: 1909 return "[invalid state]"; 1910 } 1911 } 1912 1913 /** 1914 * Get status information for the current connection, if any. 1915 * 1916 * @return a {@link WifiInfo} object containing information about the current connection 1917 */ 1918 public WifiInfo syncRequestConnectionInfo() { 1919 return mWifiInfo; 1920 } 1921 1922 public DhcpResults syncGetDhcpResults() { 1923 synchronized (mDhcpResultsLock) { 1924 return new DhcpResults(mDhcpResults); 1925 } 1926 } 1927 1928 /** 1929 * TODO: doc 1930 */ 1931 public void setDriverStart(boolean enable) { 1932 if (enable) { 1933 sendMessage(CMD_START_DRIVER); 1934 } else { 1935 sendMessage(CMD_STOP_DRIVER); 1936 } 1937 } 1938 1939 /** 1940 * TODO: doc 1941 */ 1942 public void setOperationalMode(int mode) { 1943 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 1944 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 1945 } 1946 1947 /** 1948 * TODO: doc 1949 */ 1950 public List<ScanResult> syncGetScanResultsList() { 1951 synchronized (mScanResultCache) { 1952 List<ScanResult> scanList = new ArrayList<ScanResult>(); 1953 for (ScanDetail result : mScanResults) { 1954 scanList.add(new ScanResult(result.getScanResult())); 1955 } 1956 return scanList; 1957 } 1958 } 1959 1960 public void disableEphemeralNetwork(String SSID) { 1961 if (SSID != null) { 1962 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 1963 } 1964 } 1965 1966 /** 1967 * Get unsynchronized pointer to scan result list 1968 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 1969 */ 1970 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 1971 return mScanResults; 1972 } 1973 1974 /** 1975 * Disconnect from Access Point 1976 */ 1977 public void disconnectCommand() { 1978 sendMessage(CMD_DISCONNECT); 1979 } 1980 1981 public void disconnectCommand(int uid, int reason) { 1982 sendMessage(CMD_DISCONNECT, uid, reason); 1983 } 1984 1985 /** 1986 * Initiate a reconnection to AP 1987 */ 1988 public void reconnectCommand() { 1989 sendMessage(CMD_RECONNECT); 1990 } 1991 1992 /** 1993 * Initiate a re-association to AP 1994 */ 1995 public void reassociateCommand() { 1996 sendMessage(CMD_REASSOCIATE); 1997 } 1998 1999 /** 2000 * Reload networks and then reconnect; helps load correct data for TLS networks 2001 */ 2002 2003 public void reloadTlsNetworksAndReconnect() { 2004 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2005 } 2006 2007 /** 2008 * Add a network synchronously 2009 * 2010 * @return network id of the new network 2011 */ 2012 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2013 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2014 int result = resultMsg.arg1; 2015 resultMsg.recycle(); 2016 return result; 2017 } 2018 2019 /** 2020 * Get configured networks synchronously 2021 * 2022 * @param channel 2023 * @return 2024 */ 2025 2026 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2027 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2028 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2029 resultMsg.recycle(); 2030 return result; 2031 } 2032 2033 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2034 Message resultMsg = channel.sendMessageSynchronously( 2035 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2036 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2037 resultMsg.recycle(); 2038 return result; 2039 } 2040 2041 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2042 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2043 return (WifiConfiguration) resultMsg.obj; 2044 } 2045 2046 /** 2047 * Get connection statistics synchronously 2048 * 2049 * @param channel 2050 * @return 2051 */ 2052 2053 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2054 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2055 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2056 resultMsg.recycle(); 2057 return result; 2058 } 2059 2060 /** 2061 * Get adaptors synchronously 2062 */ 2063 2064 public int syncGetSupportedFeatures(AsyncChannel channel) { 2065 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2066 int supportedFeatureSet = resultMsg.arg1; 2067 resultMsg.recycle(); 2068 return supportedFeatureSet; 2069 } 2070 2071 /** 2072 * Get link layers stats for adapter synchronously 2073 */ 2074 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2075 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2076 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2077 resultMsg.recycle(); 2078 return result; 2079 } 2080 2081 /** 2082 * Delete a network 2083 * 2084 * @param networkId id of the network to be removed 2085 */ 2086 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2087 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2088 boolean result = (resultMsg.arg1 != FAILURE); 2089 resultMsg.recycle(); 2090 return result; 2091 } 2092 2093 /** 2094 * Enable a network 2095 * 2096 * @param netId network id of the network 2097 * @param disableOthers true, if all other networks have to be disabled 2098 * @return {@code true} if the operation succeeds, {@code false} otherwise 2099 */ 2100 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2101 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2102 disableOthers ? 1 : 0); 2103 boolean result = (resultMsg.arg1 != FAILURE); 2104 resultMsg.recycle(); 2105 return result; 2106 } 2107 2108 /** 2109 * Disable a network 2110 * 2111 * @param netId network id of the network 2112 * @return {@code true} if the operation succeeds, {@code false} otherwise 2113 */ 2114 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2115 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2116 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2117 resultMsg.recycle(); 2118 return result; 2119 } 2120 2121 /** 2122 * Retrieves a WPS-NFC configuration token for the specified network 2123 * 2124 * @return a hex string representation of the WPS-NFC configuration token 2125 */ 2126 public String syncGetWpsNfcConfigurationToken(int netId) { 2127 return mWifiNative.getNfcWpsConfigurationToken(netId); 2128 } 2129 2130 void enableBackgroundScan(boolean enable) { 2131 if (enable) { 2132 mWifiConfigStore.enableAllNetworks(); 2133 } 2134 mWifiNative.enableBackgroundScan(enable); 2135 mLegacyPnoEnabled = enable; 2136 } 2137 2138 /** 2139 * Blacklist a BSSID. This will avoid the AP if there are 2140 * alternate APs to connect 2141 * 2142 * @param bssid BSSID of the network 2143 */ 2144 public void addToBlacklist(String bssid) { 2145 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2146 } 2147 2148 /** 2149 * Clear the blacklist list 2150 */ 2151 public void clearBlacklist() { 2152 sendMessage(CMD_CLEAR_BLACKLIST); 2153 } 2154 2155 public void enableRssiPolling(boolean enabled) { 2156 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2157 } 2158 2159 public void enableAllNetworks() { 2160 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2161 } 2162 2163 /** 2164 * Start filtering Multicast v4 packets 2165 */ 2166 public void startFilteringMulticastV4Packets() { 2167 mFilteringMulticastV4Packets.set(true); 2168 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2169 } 2170 2171 /** 2172 * Stop filtering Multicast v4 packets 2173 */ 2174 public void stopFilteringMulticastV4Packets() { 2175 mFilteringMulticastV4Packets.set(false); 2176 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2177 } 2178 2179 /** 2180 * Start filtering Multicast v4 packets 2181 */ 2182 public void startFilteringMulticastV6Packets() { 2183 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2184 } 2185 2186 /** 2187 * Stop filtering Multicast v4 packets 2188 */ 2189 public void stopFilteringMulticastV6Packets() { 2190 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2191 } 2192 2193 /** 2194 * Set high performance mode of operation. 2195 * Enabling would set active power mode and disable suspend optimizations; 2196 * disabling would set auto power mode and enable suspend optimizations 2197 * 2198 * @param enable true if enable, false otherwise 2199 */ 2200 public void setHighPerfModeEnabled(boolean enable) { 2201 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2202 } 2203 2204 /** 2205 * Set the country code 2206 * 2207 * @param countryCode following ISO 3166 format 2208 * @param persist {@code true} if the setting should be remembered. 2209 */ 2210 public synchronized void setCountryCode(String countryCode, boolean persist) { 2211 // If it's a good country code, apply after the current 2212 // wifi connection is terminated; ignore resetting of code 2213 // for now (it is unclear what the chipset should do when 2214 // country code is reset) 2215 2216 if (TextUtils.isEmpty(countryCode)) { 2217 log("Ignoring resetting of country code"); 2218 } else { 2219 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2220 // else only when the new country code is different from the current one to set 2221 int countryCodeSequence = mCountryCodeSequence.get(); 2222 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2223 2224 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2225 mSetCountryCode = countryCode; 2226 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2227 countryCode); 2228 } 2229 2230 if (persist) { 2231 Settings.Global.putString(mContext.getContentResolver(), 2232 Settings.Global.WIFI_COUNTRY_CODE, 2233 countryCode); 2234 } 2235 } 2236 } 2237 2238 /** 2239 * Get the country code 2240 * 2241 * @param countryCode following ISO 3166 format 2242 */ 2243 public String getCountryCode() { 2244 return mSetCountryCode; 2245 } 2246 2247 2248 /** 2249 * Set the operational frequency band 2250 * 2251 * @param band 2252 * @param persist {@code true} if the setting should be remembered. 2253 */ 2254 public void setFrequencyBand(int band, boolean persist) { 2255 if (persist) { 2256 Settings.Global.putInt(mContext.getContentResolver(), 2257 Settings.Global.WIFI_FREQUENCY_BAND, 2258 band); 2259 } 2260 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2261 } 2262 2263 /** 2264 * Enable TDLS for a specific MAC address 2265 */ 2266 public void enableTdls(String remoteMacAddress, boolean enable) { 2267 int enabler = enable ? 1 : 0; 2268 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2269 } 2270 2271 /** 2272 * Returns the operational frequency band 2273 */ 2274 public int getFrequencyBand() { 2275 return mFrequencyBand.get(); 2276 } 2277 2278 /** 2279 * Returns the wifi configuration file 2280 */ 2281 public String getConfigFile() { 2282 return mWifiConfigStore.getConfigFile(); 2283 } 2284 2285 /** 2286 * Send a message indicating bluetooth adapter connection state changed 2287 */ 2288 public void sendBluetoothAdapterStateChange(int state) { 2289 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2290 } 2291 2292 /** 2293 * Save configuration on supplicant 2294 * 2295 * @return {@code true} if the operation succeeds, {@code false} otherwise 2296 * <p/> 2297 * TODO: deprecate this 2298 */ 2299 public boolean syncSaveConfig(AsyncChannel channel) { 2300 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2301 boolean result = (resultMsg.arg1 != FAILURE); 2302 resultMsg.recycle(); 2303 return result; 2304 } 2305 2306 public void updateBatteryWorkSource(WorkSource newSource) { 2307 synchronized (mRunningWifiUids) { 2308 try { 2309 if (newSource != null) { 2310 mRunningWifiUids.set(newSource); 2311 } 2312 if (mIsRunning) { 2313 if (mReportedRunning) { 2314 // If the work source has changed since last time, need 2315 // to remove old work from battery stats. 2316 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2317 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2318 mRunningWifiUids); 2319 mLastRunningWifiUids.set(mRunningWifiUids); 2320 } 2321 } else { 2322 // Now being started, report it. 2323 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2324 mLastRunningWifiUids.set(mRunningWifiUids); 2325 mReportedRunning = true; 2326 } 2327 } else { 2328 if (mReportedRunning) { 2329 // Last reported we were running, time to stop. 2330 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2331 mLastRunningWifiUids.clear(); 2332 mReportedRunning = false; 2333 } 2334 } 2335 mWakeLock.setWorkSource(newSource); 2336 } catch (RemoteException ignore) { 2337 } 2338 } 2339 } 2340 2341 @Override 2342 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2343 super.dump(fd, pw, args); 2344 mSupplicantStateTracker.dump(fd, pw, args); 2345 pw.println("mLinkProperties " + mLinkProperties); 2346 pw.println("mWifiInfo " + mWifiInfo); 2347 pw.println("mDhcpResults " + mDhcpResults); 2348 pw.println("mNetworkInfo " + mNetworkInfo); 2349 pw.println("mLastSignalLevel " + mLastSignalLevel); 2350 pw.println("mLastBssid " + mLastBssid); 2351 pw.println("mLastNetworkId " + mLastNetworkId); 2352 pw.println("mOperationalMode " + mOperationalMode); 2353 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2354 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2355 pw.println("Supplicant status " + mWifiNative.status(true)); 2356 pw.println("mLegacyPnoEnabled " + mLegacyPnoEnabled); 2357 pw.println("mSetCountryCode " + mSetCountryCode); 2358 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2359 pw.println("mConnectedModeGScanOffloadStarted " + mConnectedModeGScanOffloadStarted); 2360 pw.println("mGScanPeriodMilli " + mGScanPeriodMilli); 2361 if (mWhiteListedSsids != null && mWhiteListedSsids.length > 0) { 2362 pw.println("SSID whitelist :" ); 2363 for (int i=0; i < mWhiteListedSsids.length; i++) { 2364 pw.println(" " + mWhiteListedSsids[i]); 2365 } 2366 } 2367 mNetworkFactory.dump(fd, pw, args); 2368 mUntrustedNetworkFactory.dump(fd, pw, args); 2369 pw.println(); 2370 mWifiConfigStore.dump(fd, pw, args); 2371 pw.println(); 2372 mWifiLogger.dump(fd, pw, args); 2373 } 2374 2375 /** 2376 * ****************************************************** 2377 * Internal private functions 2378 * ****************************************************** 2379 */ 2380 2381 private void logStateAndMessage(Message message, String state) { 2382 messageHandlingStatus = 0; 2383 if (mLogMessages) { 2384 //long now = SystemClock.elapsedRealtimeNanos(); 2385 //String ts = String.format("[%,d us]", now/1000); 2386 2387 loge(" " + state + " " + getLogRecString(message)); 2388 } 2389 } 2390 2391 /** 2392 * helper, prints the milli time since boot wi and w/o suspended time 2393 */ 2394 String printTime() { 2395 StringBuilder sb = new StringBuilder(); 2396 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2397 sb.append("/").append(SystemClock.elapsedRealtime()); 2398 return sb.toString(); 2399 } 2400 2401 /** 2402 * Return the additional string to be logged by LogRec, default 2403 * 2404 * @param msg that was processed 2405 * @return information to be logged as a String 2406 */ 2407 protected String getLogRecString(Message msg) { 2408 WifiConfiguration config; 2409 Long now; 2410 String report; 2411 String key; 2412 StringBuilder sb = new StringBuilder(); 2413 if (mScreenOn) { 2414 sb.append("!"); 2415 } 2416 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2417 sb.append("(").append(messageHandlingStatus).append(")"); 2418 } 2419 sb.append(smToString(msg)); 2420 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2421 sb.append(" uid=" + msg.sendingUid); 2422 } 2423 switch (msg.what) { 2424 case CMD_STARTED_GSCAN_DBG: 2425 case CMD_STARTED_PNO_DBG: 2426 sb.append(" "); 2427 sb.append(Integer.toString(msg.arg1)); 2428 sb.append(" "); 2429 sb.append(Integer.toString(msg.arg2)); 2430 if (msg.obj != null) { 2431 sb.append(" " + (String)msg.obj); 2432 } 2433 break; 2434 case CMD_RESTART_AUTOJOIN_OFFLOAD: 2435 sb.append(" "); 2436 sb.append(Integer.toString(msg.arg1)); 2437 sb.append(" "); 2438 sb.append(Integer.toString(msg.arg2)); 2439 sb.append("/").append(Integer.toString(mRestartAutoJoinOffloadCounter)); 2440 if (msg.obj != null) { 2441 sb.append(" " + (String)msg.obj); 2442 } 2443 break; 2444 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 2445 sb.append(" "); 2446 sb.append(Integer.toString(msg.arg1)); 2447 sb.append(" "); 2448 sb.append(Integer.toString(msg.arg2)); 2449 sb.append(" halAllowed=").append(useHalBasedAutoJoinOffload()); 2450 sb.append(" scanAllowed=").append(allowFullBandScanAndAssociated()); 2451 sb.append(" autojoinAllowed="); 2452 sb.append(mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()); 2453 sb.append(" withTraffic=").append(getAllowScansWithTraffic()); 2454 sb.append(" tx=").append(mWifiInfo.txSuccessRate); 2455 sb.append("/").append(mWifiConfigStore.maxTxPacketForFullScans); 2456 sb.append(" rx=").append(mWifiInfo.rxSuccessRate); 2457 sb.append("/").append(mWifiConfigStore.maxRxPacketForFullScans); 2458 sb.append(" -> ").append(mConnectedModeGScanOffloadStarted); 2459 break; 2460 case CMD_PNO_NETWORK_FOUND: 2461 sb.append(" "); 2462 sb.append(Integer.toString(msg.arg1)); 2463 sb.append(" "); 2464 sb.append(Integer.toString(msg.arg2)); 2465 if (msg.obj != null) { 2466 ScanResult[] results = (ScanResult[])msg.obj; 2467 for (int i = 0; i < results.length; i++) { 2468 sb.append(" ").append(results[i].SSID).append(" "); 2469 sb.append(results[i].frequency); 2470 sb.append(" ").append(results[i].level); 2471 } 2472 } 2473 break; 2474 case CMD_START_SCAN: 2475 now = System.currentTimeMillis(); 2476 sb.append(" "); 2477 sb.append(Integer.toString(msg.arg1)); 2478 sb.append(" "); 2479 sb.append(Integer.toString(msg.arg2)); 2480 sb.append(" ic="); 2481 sb.append(Integer.toString(sScanAlarmIntentCount)); 2482 if (msg.obj != null) { 2483 Bundle bundle = (Bundle) msg.obj; 2484 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2485 if (request != 0) { 2486 sb.append(" proc(ms):").append(now - request); 2487 } 2488 } 2489 if (mIsScanOngoing) sb.append(" onGoing"); 2490 if (mIsFullScanOngoing) sb.append(" full"); 2491 if (lastStartScanTimeStamp != 0) { 2492 sb.append(" started:").append(lastStartScanTimeStamp); 2493 sb.append(",").append(now - lastStartScanTimeStamp); 2494 } 2495 if (lastScanDuration != 0) { 2496 sb.append(" dur:").append(lastScanDuration); 2497 } 2498 sb.append(" cnt=").append(mDelayedScanCounter); 2499 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2500 sb.append(" f=").append(mWifiInfo.getFrequency()); 2501 sb.append(" sc=").append(mWifiInfo.score); 2502 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2503 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2504 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2505 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2506 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2507 if (lastScanFreqs != null) { 2508 sb.append(" list=").append(lastScanFreqs); 2509 } else { 2510 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2511 } 2512 report = reportOnTime(); 2513 if (report != null) { 2514 sb.append(" ").append(report); 2515 } 2516 break; 2517 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2518 sb.append(" "); 2519 sb.append(Integer.toString(msg.arg1)); 2520 sb.append(" "); 2521 sb.append(Integer.toString(msg.arg2)); 2522 sb.append(printTime()); 2523 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2524 if (stateChangeResult != null) { 2525 sb.append(stateChangeResult.toString()); 2526 } 2527 break; 2528 case WifiManager.SAVE_NETWORK: 2529 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2530 sb.append(" "); 2531 sb.append(Integer.toString(msg.arg1)); 2532 sb.append(" "); 2533 sb.append(Integer.toString(msg.arg2)); 2534 if (lastSavedConfigurationAttempt != null) { 2535 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2536 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2537 if (lastSavedConfigurationAttempt.hiddenSSID) { 2538 sb.append(" hidden"); 2539 } 2540 if (lastSavedConfigurationAttempt.preSharedKey != null 2541 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2542 sb.append(" hasPSK"); 2543 } 2544 if (lastSavedConfigurationAttempt.ephemeral) { 2545 sb.append(" ephemeral"); 2546 } 2547 if (lastSavedConfigurationAttempt.selfAdded) { 2548 sb.append(" selfAdded"); 2549 } 2550 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2551 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2552 } 2553 break; 2554 case WifiManager.FORGET_NETWORK: 2555 sb.append(" "); 2556 sb.append(Integer.toString(msg.arg1)); 2557 sb.append(" "); 2558 sb.append(Integer.toString(msg.arg2)); 2559 if (lastForgetConfigurationAttempt != null) { 2560 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2561 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2562 if (lastForgetConfigurationAttempt.hiddenSSID) { 2563 sb.append(" hidden"); 2564 } 2565 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2566 sb.append(" hasPSK"); 2567 } 2568 if (lastForgetConfigurationAttempt.ephemeral) { 2569 sb.append(" ephemeral"); 2570 } 2571 if (lastForgetConfigurationAttempt.selfAdded) { 2572 sb.append(" selfAdded"); 2573 } 2574 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2575 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2576 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2577 } 2578 break; 2579 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2580 sb.append(" "); 2581 sb.append(Integer.toString(msg.arg1)); 2582 sb.append(" "); 2583 sb.append(Integer.toString(msg.arg2)); 2584 String bssid = (String) msg.obj; 2585 if (bssid != null && bssid.length() > 0) { 2586 sb.append(" "); 2587 sb.append(bssid); 2588 } 2589 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2590 sb.append(printTime()); 2591 break; 2592 case WifiMonitor.SCAN_RESULTS_EVENT: 2593 sb.append(" "); 2594 sb.append(Integer.toString(msg.arg1)); 2595 sb.append(" "); 2596 sb.append(Integer.toString(msg.arg2)); 2597 if (mScanResults != null) { 2598 sb.append(" found="); 2599 sb.append(mScanResults.size()); 2600 } 2601 sb.append(" known=").append(mNumScanResultsKnown); 2602 sb.append(" got=").append(mNumScanResultsReturned); 2603 if (lastScanDuration != 0) { 2604 sb.append(" dur:").append(lastScanDuration); 2605 } 2606 if (mOnTime != 0) { 2607 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2608 sb.append(",").append(mOnTime); 2609 } 2610 if (mTxTime != 0) { 2611 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2612 sb.append(",").append(mTxTime); 2613 } 2614 if (mRxTime != 0) { 2615 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2616 sb.append(",").append(mRxTime); 2617 } 2618 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2619 sb.append(String.format(" con=%d", mConnectionRequests)); 2620 key = mWifiConfigStore.getLastSelectedConfiguration(); 2621 if (key != null) { 2622 sb.append(" last=").append(key); 2623 } 2624 break; 2625 case WifiMonitor.SCAN_FAILED_EVENT: 2626 break; 2627 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2628 sb.append(" "); 2629 sb.append(Integer.toString(msg.arg1)); 2630 sb.append(" "); 2631 sb.append(Integer.toString(msg.arg2)); 2632 sb.append(" ").append(mLastBssid); 2633 sb.append(" nid=").append(mLastNetworkId); 2634 config = getCurrentWifiConfiguration(); 2635 if (config != null) { 2636 sb.append(" ").append(config.configKey()); 2637 } 2638 sb.append(printTime()); 2639 key = mWifiConfigStore.getLastSelectedConfiguration(); 2640 if (key != null) { 2641 sb.append(" last=").append(key); 2642 } 2643 break; 2644 case CMD_TARGET_BSSID: 2645 case CMD_ASSOCIATED_BSSID: 2646 sb.append(" "); 2647 sb.append(Integer.toString(msg.arg1)); 2648 sb.append(" "); 2649 sb.append(Integer.toString(msg.arg2)); 2650 if (msg.obj != null) { 2651 sb.append(" BSSID=").append((String) msg.obj); 2652 } 2653 if (mTargetRoamBSSID != null) { 2654 sb.append(" Target=").append(mTargetRoamBSSID); 2655 } 2656 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2657 sb.append(printTime()); 2658 break; 2659 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2660 if (msg.obj != null) { 2661 sb.append(" ").append((String) msg.obj); 2662 } 2663 sb.append(" nid=").append(msg.arg1); 2664 sb.append(" reason=").append(msg.arg2); 2665 if (mLastBssid != null) { 2666 sb.append(" lastbssid=").append(mLastBssid); 2667 } 2668 if (mWifiInfo.getFrequency() != -1) { 2669 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2670 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2671 } 2672 if (linkDebouncing) { 2673 sb.append(" debounce"); 2674 } 2675 sb.append(printTime()); 2676 break; 2677 case WifiMonitor.SSID_TEMP_DISABLED: 2678 case WifiMonitor.SSID_REENABLED: 2679 sb.append(" nid=").append(msg.arg1); 2680 if (msg.obj != null) { 2681 sb.append(" ").append((String) msg.obj); 2682 } 2683 config = getCurrentWifiConfiguration(); 2684 if (config != null) { 2685 sb.append(" cur=").append(config.configKey()); 2686 sb.append(" ajst=").append(config.autoJoinStatus); 2687 if (config.selfAdded) { 2688 sb.append(" selfAdded"); 2689 } 2690 if (config.status != 0) { 2691 sb.append(" st=").append(config.status); 2692 sb.append(" rs=").append(config.disableReason); 2693 } 2694 if (config.lastConnected != 0) { 2695 now = System.currentTimeMillis(); 2696 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2697 } 2698 if (mLastBssid != null) { 2699 sb.append(" lastbssid=").append(mLastBssid); 2700 } 2701 if (mWifiInfo.getFrequency() != -1) { 2702 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2703 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2704 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2705 } 2706 } 2707 sb.append(printTime()); 2708 break; 2709 case CMD_RSSI_POLL: 2710 case CMD_UNWANTED_NETWORK: 2711 case WifiManager.RSSI_PKTCNT_FETCH: 2712 sb.append(" "); 2713 sb.append(Integer.toString(msg.arg1)); 2714 sb.append(" "); 2715 sb.append(Integer.toString(msg.arg2)); 2716 if (mWifiInfo.getSSID() != null) 2717 if (mWifiInfo.getSSID() != null) 2718 sb.append(" ").append(mWifiInfo.getSSID()); 2719 if (mWifiInfo.getBSSID() != null) 2720 sb.append(" ").append(mWifiInfo.getBSSID()); 2721 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2722 sb.append(" f=").append(mWifiInfo.getFrequency()); 2723 sb.append(" sc=").append(mWifiInfo.score); 2724 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2725 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2726 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2727 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2728 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2729 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2730 report = reportOnTime(); 2731 if (report != null) { 2732 sb.append(" ").append(report); 2733 } 2734 if (wifiScoringReport != null) { 2735 sb.append(wifiScoringReport); 2736 } 2737 if (mConnectedModeGScanOffloadStarted) { 2738 sb.append(" offload-started periodMilli " + mGScanPeriodMilli); 2739 } else { 2740 sb.append(" offload-stopped"); 2741 } 2742 break; 2743 case CMD_AUTO_CONNECT: 2744 case WifiManager.CONNECT_NETWORK: 2745 sb.append(" "); 2746 sb.append(Integer.toString(msg.arg1)); 2747 sb.append(" "); 2748 sb.append(Integer.toString(msg.arg2)); 2749 config = (WifiConfiguration) msg.obj; 2750 if (config != null) { 2751 sb.append(" ").append(config.configKey()); 2752 if (config.visibility != null) { 2753 sb.append(" ").append(config.visibility.toString()); 2754 } 2755 } 2756 if (mTargetRoamBSSID != null) { 2757 sb.append(" ").append(mTargetRoamBSSID); 2758 } 2759 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2760 sb.append(printTime()); 2761 config = getCurrentWifiConfiguration(); 2762 if (config != null) { 2763 sb.append(config.configKey()); 2764 if (config.visibility != null) { 2765 sb.append(" ").append(config.visibility.toString()); 2766 } 2767 } 2768 break; 2769 case CMD_AUTO_ROAM: 2770 sb.append(" "); 2771 sb.append(Integer.toString(msg.arg1)); 2772 sb.append(" "); 2773 sb.append(Integer.toString(msg.arg2)); 2774 ScanResult result = (ScanResult) msg.obj; 2775 if (result != null) { 2776 now = System.currentTimeMillis(); 2777 sb.append(" bssid=").append(result.BSSID); 2778 sb.append(" rssi=").append(result.level); 2779 sb.append(" freq=").append(result.frequency); 2780 if (result.seen > 0 && result.seen < now) { 2781 sb.append(" seen=").append(now - result.seen); 2782 } else { 2783 // Somehow the timestamp for this scan result is inconsistent 2784 sb.append(" !seen=").append(result.seen); 2785 } 2786 } 2787 if (mTargetRoamBSSID != null) { 2788 sb.append(" ").append(mTargetRoamBSSID); 2789 } 2790 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2791 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2792 sb.append(printTime()); 2793 break; 2794 case CMD_ADD_OR_UPDATE_NETWORK: 2795 sb.append(" "); 2796 sb.append(Integer.toString(msg.arg1)); 2797 sb.append(" "); 2798 sb.append(Integer.toString(msg.arg2)); 2799 if (msg.obj != null) { 2800 config = (WifiConfiguration) msg.obj; 2801 sb.append(" ").append(config.configKey()); 2802 sb.append(" prio=").append(config.priority); 2803 sb.append(" status=").append(config.status); 2804 if (config.BSSID != null) { 2805 sb.append(" ").append(config.BSSID); 2806 } 2807 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2808 if (curConfig != null) { 2809 if (curConfig.configKey().equals(config.configKey())) { 2810 sb.append(" is current"); 2811 } else { 2812 sb.append(" current=").append(curConfig.configKey()); 2813 sb.append(" prio=").append(curConfig.priority); 2814 sb.append(" status=").append(curConfig.status); 2815 } 2816 } 2817 } 2818 break; 2819 case WifiManager.DISABLE_NETWORK: 2820 case CMD_ENABLE_NETWORK: 2821 sb.append(" "); 2822 sb.append(Integer.toString(msg.arg1)); 2823 sb.append(" "); 2824 sb.append(Integer.toString(msg.arg2)); 2825 key = mWifiConfigStore.getLastSelectedConfiguration(); 2826 if (key != null) { 2827 sb.append(" last=").append(key); 2828 } 2829 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2830 if (config != null && (key == null || !config.configKey().equals(key))) { 2831 sb.append(" target=").append(key); 2832 } 2833 break; 2834 case CMD_GET_CONFIGURED_NETWORKS: 2835 sb.append(" "); 2836 sb.append(Integer.toString(msg.arg1)); 2837 sb.append(" "); 2838 sb.append(Integer.toString(msg.arg2)); 2839 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2840 break; 2841 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2842 sb.append(" "); 2843 sb.append(Integer.toString(msg.arg1)); 2844 sb.append(" "); 2845 sb.append(Integer.toString(msg.arg2)); 2846 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2847 sb.append(",").append(mWifiInfo.txBad); 2848 sb.append(",").append(mWifiInfo.txRetries); 2849 break; 2850 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2851 sb.append(" "); 2852 sb.append(Integer.toString(msg.arg1)); 2853 sb.append(" "); 2854 sb.append(Integer.toString(msg.arg2)); 2855 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2856 sb.append(" OK "); 2857 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2858 sb.append(" FAIL "); 2859 } 2860 if (mLinkProperties != null) { 2861 if (mLinkProperties.hasIPv4Address()) { 2862 sb.append(" v4"); 2863 } 2864 if (mLinkProperties.hasGlobalIPv6Address()) { 2865 sb.append(" v6"); 2866 } 2867 if (mLinkProperties.hasIPv4DefaultRoute()) { 2868 sb.append(" v4r"); 2869 } 2870 if (mLinkProperties.hasIPv6DefaultRoute()) { 2871 sb.append(" v6r"); 2872 } 2873 if (mLinkProperties.hasIPv4DnsServer()) { 2874 sb.append(" v4dns"); 2875 } 2876 if (mLinkProperties.hasIPv6DnsServer()) { 2877 sb.append(" v6dns"); 2878 } 2879 } 2880 break; 2881 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2882 sb.append(" "); 2883 sb.append(Integer.toString(msg.arg1)); 2884 sb.append(" "); 2885 sb.append(Integer.toString(msg.arg2)); 2886 if (msg.obj != null) { 2887 NetworkInfo info = (NetworkInfo) msg.obj; 2888 NetworkInfo.State state = info.getState(); 2889 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2890 if (state != null) { 2891 sb.append(" st=").append(state); 2892 } 2893 if (detailedState != null) { 2894 sb.append("/").append(detailedState); 2895 } 2896 } 2897 break; 2898 case CMD_IP_CONFIGURATION_LOST: 2899 int count = -1; 2900 WifiConfiguration c = getCurrentWifiConfiguration(); 2901 if (c != null) count = c.numIpConfigFailures; 2902 sb.append(" "); 2903 sb.append(Integer.toString(msg.arg1)); 2904 sb.append(" "); 2905 sb.append(Integer.toString(msg.arg2)); 2906 sb.append(" failures: "); 2907 sb.append(Integer.toString(count)); 2908 sb.append("/"); 2909 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2910 if (mWifiInfo.getBSSID() != null) { 2911 sb.append(" ").append(mWifiInfo.getBSSID()); 2912 } 2913 if (c != null) { 2914 ScanDetailCache scanDetailCache = 2915 mWifiConfigStore.getScanDetailCache(c); 2916 if (scanDetailCache != null) { 2917 for (ScanDetail sd : scanDetailCache.values()) { 2918 ScanResult r = sd.getScanResult(); 2919 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2920 sb.append(" ipfail=").append(r.numIpConfigFailures); 2921 sb.append(",st=").append(r.autoJoinStatus); 2922 } 2923 } 2924 } 2925 sb.append(" -> ajst=").append(c.autoJoinStatus); 2926 sb.append(" ").append(c.disableReason); 2927 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2928 sb.append(",").append(mWifiInfo.txBad); 2929 sb.append(",").append(mWifiInfo.txRetries); 2930 } 2931 sb.append(printTime()); 2932 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2933 break; 2934 case CMD_UPDATE_LINKPROPERTIES: 2935 sb.append(" "); 2936 sb.append(Integer.toString(msg.arg1)); 2937 sb.append(" "); 2938 sb.append(Integer.toString(msg.arg2)); 2939 if (mLinkProperties != null) { 2940 if (mLinkProperties.hasIPv4Address()) { 2941 sb.append(" v4"); 2942 } 2943 if (mLinkProperties.hasGlobalIPv6Address()) { 2944 sb.append(" v6"); 2945 } 2946 if (mLinkProperties.hasIPv4DefaultRoute()) { 2947 sb.append(" v4r"); 2948 } 2949 if (mLinkProperties.hasIPv6DefaultRoute()) { 2950 sb.append(" v6r"); 2951 } 2952 if (mLinkProperties.hasIPv4DnsServer()) { 2953 sb.append(" v4dns"); 2954 } 2955 if (mLinkProperties.hasIPv6DnsServer()) { 2956 sb.append(" v6dns"); 2957 } 2958 } 2959 break; 2960 case CMD_SET_COUNTRY_CODE: 2961 sb.append(" "); 2962 sb.append(Integer.toString(msg.arg1)); 2963 sb.append(" "); 2964 sb.append(Integer.toString(msg.arg2)); 2965 if (msg.obj != null) { 2966 sb.append(" ").append((String) msg.obj); 2967 } 2968 break; 2969 case CMD_ROAM_WATCHDOG_TIMER: 2970 sb.append(" "); 2971 sb.append(Integer.toString(msg.arg1)); 2972 sb.append(" "); 2973 sb.append(Integer.toString(msg.arg2)); 2974 sb.append(" cur=").append(roamWatchdogCount); 2975 break; 2976 case CMD_DISCONNECTING_WATCHDOG_TIMER: 2977 sb.append(" "); 2978 sb.append(Integer.toString(msg.arg1)); 2979 sb.append(" "); 2980 sb.append(Integer.toString(msg.arg2)); 2981 sb.append(" cur=").append(disconnectingWatchdogCount); 2982 break; 2983 default: 2984 sb.append(" "); 2985 sb.append(Integer.toString(msg.arg1)); 2986 sb.append(" "); 2987 sb.append(Integer.toString(msg.arg2)); 2988 break; 2989 } 2990 2991 return sb.toString(); 2992 } 2993 2994 private void stopPnoOffload() { 2995 2996 // clear the PNO list 2997 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 2998 Log.e(TAG, "Failed to stop pno"); 2999 } 3000 3001 } 3002 3003 3004 private boolean configureSsidWhiteList() { 3005 3006 mWhiteListedSsids = mWifiConfigStore.getWhiteListedSsids(getCurrentWifiConfiguration()); 3007 if (mWhiteListedSsids == null || mWhiteListedSsids.length == 0) { 3008 return true; 3009 } 3010 3011 if (!WifiNative.setSsidWhitelist(mWhiteListedSsids)) { 3012 loge("configureSsidWhiteList couldnt program SSID list, size " 3013 + mWhiteListedSsids.length); 3014 return false; 3015 } 3016 3017 loge("configureSsidWhiteList success"); 3018 return true; 3019 } 3020 3021 // In associated more, lazy roam will be looking for 5GHz roam candidate 3022 private boolean configureLazyRoam() { 3023 boolean status; 3024 if (!useHalBasedAutoJoinOffload()) return false; 3025 3026 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3027 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3028 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3029 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3030 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3031 params.A_band_max_boost = 65; 3032 params.lazy_roam_hysteresis = 25; 3033 params.alert_roam_rssi_trigger = -75; 3034 3035 if (DBG) { 3036 Log.e(TAG, "configureLazyRoam " + params.toString()); 3037 } 3038 3039 if (!WifiNative.setLazyRoam(true, params)) { 3040 3041 Log.e(TAG, "configureLazyRoam couldnt program params"); 3042 3043 return false; 3044 } 3045 if (DBG) { 3046 Log.e(TAG, "configureLazyRoam success"); 3047 } 3048 return true; 3049 } 3050 3051 // In associated more, lazy roam will be looking for 5GHz roam candidate 3052 private boolean stopLazyRoam() { 3053 boolean status; 3054 if (!useHalBasedAutoJoinOffload()) return false; 3055 if (DBG) { 3056 Log.e(TAG, "stopLazyRoam"); 3057 } 3058 return WifiNative.setLazyRoam(false, null); 3059 } 3060 3061 private boolean startGScanConnectedModeOffload(String reason) { 3062 if (DBG) { 3063 if (reason == null) { 3064 reason = ""; 3065 } 3066 loge("startGScanConnectedModeOffload " + reason); 3067 } 3068 stopGScan("startGScanConnectedModeOffload " + reason); 3069 if (!mScreenOn) return false; 3070 3071 if (USE_PAUSE_SCANS) { 3072 mWifiNative.pauseScan(); 3073 } 3074 mPnoEnabled = configurePno(); 3075 if (mPnoEnabled == false) { 3076 if (USE_PAUSE_SCANS) { 3077 mWifiNative.restartScan(); 3078 } 3079 return false; 3080 } 3081 mLazyRoamEnabled = configureLazyRoam(); 3082 if (mLazyRoamEnabled == false) { 3083 if (USE_PAUSE_SCANS) { 3084 mWifiNative.restartScan(); 3085 } 3086 return false; 3087 } 3088 if (mWifiConfigStore.getLastSelectedConfiguration() == null) { 3089 configureSsidWhiteList(); 3090 } 3091 if (!startConnectedGScan(reason)) { 3092 if (USE_PAUSE_SCANS) { 3093 mWifiNative.restartScan(); 3094 } 3095 return false; 3096 } 3097 if (USE_PAUSE_SCANS) { 3098 mWifiNative.restartScan(); 3099 } 3100 mConnectedModeGScanOffloadStarted = true; 3101 if (DBG) { 3102 loge("startGScanConnectedModeOffload success"); 3103 } 3104 return true; 3105 } 3106 3107 private boolean startGScanDisconnectedModeOffload(String reason) { 3108 if (DBG) { 3109 loge("startGScanDisconnectedModeOffload " + reason); 3110 } 3111 stopGScan("startGScanDisconnectedModeOffload " + reason); 3112 if (USE_PAUSE_SCANS) { 3113 mWifiNative.pauseScan(); 3114 } 3115 mPnoEnabled = configurePno(); 3116 if (mPnoEnabled == false) { 3117 if (USE_PAUSE_SCANS) { 3118 mWifiNative.restartScan(); 3119 } 3120 return false; 3121 } 3122 if (!startDisconnectedGScan(reason)) { 3123 if (USE_PAUSE_SCANS) { 3124 mWifiNative.restartScan(); 3125 } 3126 return false; 3127 } 3128 if (USE_PAUSE_SCANS) { 3129 mWifiNative.restartScan(); 3130 } 3131 return true; 3132 } 3133 3134 private boolean configurePno() { 3135 if (!useHalBasedAutoJoinOffload()) return false; 3136 3137 if (mWifiScanner == null) { 3138 log("configurePno: mWifiScanner is null "); 3139 return true; 3140 } 3141 3142 List<WifiNative.WifiPnoNetwork> llist 3143 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3144 if (llist == null || llist.size() == 0) { 3145 stopPnoOffload(); 3146 log("configurePno: empty PNO list "); 3147 return true; 3148 } 3149 if (DBG) { 3150 log("configurePno: got llist size " + llist.size()); 3151 } 3152 3153 // first program the network we want to look for thru the pno API 3154 WifiNative.WifiPnoNetwork list[] 3155 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3156 3157 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3158 Log.e(TAG, "Failed to set pno, length = " + list.length); 3159 return false; 3160 } 3161 3162 if (true) { 3163 StringBuilder sb = new StringBuilder(); 3164 for (WifiNative.WifiPnoNetwork network : list) { 3165 sb.append("[").append(network.SSID).append(" auth=").append(network.auth); 3166 sb.append(" flags="); 3167 sb.append(network.flags).append(" rssi").append(network.rssi_threshold); 3168 sb.append("] "); 3169 3170 } 3171 sendMessage(CMD_STARTED_PNO_DBG, 1, (int)mGScanPeriodMilli, sb.toString()); 3172 } 3173 return true; 3174 } 3175 3176 final static int DISCONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3177 final static int CONNECTED_SHORT_SCANS_DURATION_MILLI = 2 * 60 * 1000; 3178 3179 private boolean startConnectedGScan(String reason) { 3180 // send a scan background request so as to kick firmware 3181 // 5GHz roaming and autojoin 3182 // We do this only if screen is on 3183 WifiScanner.ScanSettings settings; 3184 3185 if (mPnoEnabled || mLazyRoamEnabled) { 3186 settings = new WifiScanner.ScanSettings(); 3187 settings.band = WifiScanner.WIFI_BAND_BOTH; 3188 long now = System.currentTimeMillis(); 3189 3190 if (!mScreenOn || (mGScanStartTimeMilli!= 0 && now > mGScanStartTimeMilli 3191 && ((now - mGScanStartTimeMilli) > CONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3192 settings.periodInMs = mWifiConfigStore.wifiAssociatedLongScanIntervalMilli.get(); 3193 } else { 3194 mGScanStartTimeMilli = now; 3195 settings.periodInMs = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3196 // if we start offload with short interval, then reconfigure it after a given 3197 // duration of time so as to reduce the scan frequency 3198 int delay = 30 * 1000 + CONNECTED_SHORT_SCANS_DURATION_MILLI; 3199 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3200 mRestartAutoJoinOffloadCounter, " startConnectedGScan " + reason, 3201 (long)delay); 3202 mRestartAutoJoinOffloadCounter++; 3203 } 3204 mGScanPeriodMilli = settings.periodInMs; 3205 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3206 if (DBG) { 3207 log("startConnectedScan: settings band="+ settings.band 3208 + " period=" + settings.periodInMs); 3209 } 3210 3211 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3212 if (true) { 3213 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3214 } 3215 } 3216 return true; 3217 } 3218 3219 private boolean startDisconnectedGScan(String reason) { 3220 // send a scan background request so as to kick firmware 3221 // PNO 3222 // This is done in both screen On and screen Off modes 3223 WifiScanner.ScanSettings settings; 3224 3225 if (mWifiScanner == null) { 3226 log("startDisconnectedGScan: no wifi scanner"); 3227 return false; 3228 } 3229 3230 if (mPnoEnabled || mLazyRoamEnabled) { 3231 settings = new WifiScanner.ScanSettings(); 3232 settings.band = WifiScanner.WIFI_BAND_BOTH; 3233 long now = System.currentTimeMillis(); 3234 3235 3236 if (!mScreenOn || (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 3237 && ((now - mGScanStartTimeMilli) > DISCONNECTED_SHORT_SCANS_DURATION_MILLI))) { 3238 settings.periodInMs = mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get(); 3239 } else { 3240 settings.periodInMs = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 3241 mGScanStartTimeMilli = now; 3242 // if we start offload with short interval, then reconfigure it after a given 3243 // duration of time so as to reduce the scan frequency 3244 int delay = 30 * 1000 + DISCONNECTED_SHORT_SCANS_DURATION_MILLI; 3245 sendMessageDelayed(CMD_RESTART_AUTOJOIN_OFFLOAD, delay, 3246 mRestartAutoJoinOffloadCounter, " startDisconnectedGScan " + reason, 3247 (long)delay); 3248 mRestartAutoJoinOffloadCounter++; 3249 } 3250 mGScanPeriodMilli = settings.periodInMs; 3251 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3252 if (DBG) { 3253 log("startDisconnectedScan: settings band="+ settings.band 3254 + " period=" + settings.periodInMs); 3255 } 3256 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3257 if (true) { 3258 sendMessage(CMD_STARTED_GSCAN_DBG, 1, (int)mGScanPeriodMilli, reason); 3259 } 3260 } 3261 return true; 3262 } 3263 3264 private boolean stopGScan(String reason) { 3265 mGScanStartTimeMilli = 0; 3266 mGScanPeriodMilli = 0; 3267 if (mWifiScanner != null) { 3268 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3269 } 3270 mConnectedModeGScanOffloadStarted = false; 3271 if (true) { 3272 sendMessage(CMD_STARTED_GSCAN_DBG, 0, 0, reason); 3273 } 3274 return true; 3275 } 3276 3277 private void handleScreenStateChanged(boolean screenOn) { 3278 mScreenOn = screenOn; 3279 if (PDBG) { 3280 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3281 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3282 + " state " + getCurrentState().getName() 3283 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3284 } 3285 enableRssiPolling(screenOn); 3286 if (screenOn) enableAllNetworks(); 3287 if (mUserWantsSuspendOpt.get()) { 3288 if (screenOn) { 3289 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3290 } else { 3291 // Allow 2s for suspend optimizations to be set 3292 mSuspendWakeLock.acquire(2000); 3293 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3294 } 3295 } 3296 mScreenBroadcastReceived.set(true); 3297 3298 getWifiLinkLayerStats(false); 3299 mOnTimeScreenStateChange = mOnTime; 3300 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3301 3302 cancelDelayedScan(); 3303 3304 if (screenOn) { 3305 if (mLegacyPnoEnabled) { 3306 enableBackgroundScan(false); 3307 } 3308 setScanAlarm(false); 3309 clearBlacklist(); 3310 3311 fullBandConnectedTimeIntervalMilli 3312 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 3313 // In either Disconnectedstate or ConnectedState, 3314 // start the scan alarm so as to enable autojoin 3315 if (getCurrentState() == mConnectedState 3316 && allowFullBandScanAndAssociated()) { 3317 if (useHalBasedAutoJoinOffload()) { 3318 startGScanConnectedModeOffload("screenOnConnected"); 3319 } else { 3320 // Scan after 500ms 3321 startDelayedScan(500, null, null); 3322 } 3323 } else if (getCurrentState() == mDisconnectedState) { 3324 if (useHalBasedAutoJoinOffload()) { 3325 startGScanDisconnectedModeOffload("screenOnDisconnected"); 3326 } else { 3327 // Scan after 500ms 3328 startDelayedScan(500, null, null); 3329 } 3330 } 3331 } else { 3332 if (getCurrentState() == mDisconnectedState) { 3333 // Screen Off and Disconnected and chipset doesn't support scan offload 3334 // => start scan alarm 3335 // Screen Off and Disconnected and chipset does support scan offload 3336 // => will use scan offload (i.e. background scan) 3337 if (useHalBasedAutoJoinOffload()) { 3338 startGScanDisconnectedModeOffload("screenOffDisconnected"); 3339 } else { 3340 if (!mBackgroundScanSupported) { 3341 setScanAlarm(true); 3342 } else { 3343 if (!mIsScanOngoing) { 3344 enableBackgroundScan(true); 3345 } 3346 } 3347 } 3348 } else { 3349 if (mLegacyPnoEnabled) { 3350 enableBackgroundScan(false); 3351 } 3352 stopGScan("ScreenOffStop(enableBackground=" + mLegacyPnoEnabled + ") "); 3353 } 3354 } 3355 if (DBG) logd("backgroundScan enabled=" + mLegacyPnoEnabled); 3356 3357 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3358 } 3359 3360 private void checkAndSetConnectivityInstance() { 3361 if (mCm == null) { 3362 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3363 } 3364 } 3365 3366 private boolean startTethering(ArrayList<String> available) { 3367 3368 boolean wifiAvailable = false; 3369 3370 checkAndSetConnectivityInstance(); 3371 3372 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3373 3374 for (String intf : available) { 3375 for (String regex : wifiRegexs) { 3376 if (intf.matches(regex)) { 3377 3378 InterfaceConfiguration ifcg = null; 3379 try { 3380 ifcg = mNwService.getInterfaceConfig(intf); 3381 if (ifcg != null) { 3382 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3383 ifcg.setLinkAddress(new LinkAddress( 3384 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3385 ifcg.setInterfaceUp(); 3386 3387 mNwService.setInterfaceConfig(intf, ifcg); 3388 } 3389 } catch (Exception e) { 3390 loge("Error configuring interface " + intf + ", :" + e); 3391 return false; 3392 } 3393 3394 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3395 loge("Error tethering on " + intf); 3396 return false; 3397 } 3398 mTetherInterfaceName = intf; 3399 return true; 3400 } 3401 } 3402 } 3403 // We found no interfaces to tether 3404 return false; 3405 } 3406 3407 private void stopTethering() { 3408 3409 checkAndSetConnectivityInstance(); 3410 3411 /* Clear the interface config to allow dhcp correctly configure new 3412 ip settings */ 3413 InterfaceConfiguration ifcg = null; 3414 try { 3415 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3416 if (ifcg != null) { 3417 ifcg.setLinkAddress( 3418 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3419 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3420 } 3421 } catch (Exception e) { 3422 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3423 } 3424 3425 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3426 loge("Untether initiate failed!"); 3427 } 3428 } 3429 3430 private boolean isWifiTethered(ArrayList<String> active) { 3431 3432 checkAndSetConnectivityInstance(); 3433 3434 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3435 for (String intf : active) { 3436 for (String regex : wifiRegexs) { 3437 if (intf.matches(regex)) { 3438 return true; 3439 } 3440 } 3441 } 3442 // We found no interfaces that are tethered 3443 return false; 3444 } 3445 3446 /** 3447 * Set the country code from the system setting value, if any. 3448 */ 3449 private void setCountryCode() { 3450 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3451 Settings.Global.WIFI_COUNTRY_CODE); 3452 if (countryCode != null && !countryCode.isEmpty()) { 3453 setCountryCode(countryCode, false); 3454 } else { 3455 //use driver default 3456 } 3457 } 3458 3459 /** 3460 * Set the frequency band from the system setting value, if any. 3461 */ 3462 private void setFrequencyBand() { 3463 int band = Settings.Global.getInt(mContext.getContentResolver(), 3464 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3465 setFrequencyBand(band, false); 3466 } 3467 3468 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3469 if (DBG) { 3470 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3471 + " -want " + mUserWantsSuspendOpt.get() 3472 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3473 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3474 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3475 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3476 } 3477 //mWifiNative.setSuspendOptimizations(enabled); 3478 3479 if (enabled) { 3480 mSuspendOptNeedsDisabled &= ~reason; 3481 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3482 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3483 if (DBG) { 3484 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3485 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3486 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3487 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3488 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3489 } 3490 mWifiNative.setSuspendOptimizations(true); 3491 } 3492 } else { 3493 mSuspendOptNeedsDisabled |= reason; 3494 mWifiNative.setSuspendOptimizations(false); 3495 } 3496 } 3497 3498 private void setSuspendOptimizations(int reason, boolean enabled) { 3499 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3500 if (enabled) { 3501 mSuspendOptNeedsDisabled &= ~reason; 3502 } else { 3503 mSuspendOptNeedsDisabled |= reason; 3504 } 3505 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3506 } 3507 3508 private void setWifiState(int wifiState) { 3509 final int previousWifiState = mWifiState.get(); 3510 3511 try { 3512 if (wifiState == WIFI_STATE_ENABLED) { 3513 mBatteryStats.noteWifiOn(); 3514 } else if (wifiState == WIFI_STATE_DISABLED) { 3515 mBatteryStats.noteWifiOff(); 3516 } 3517 } catch (RemoteException e) { 3518 loge("Failed to note battery stats in wifi"); 3519 } 3520 3521 mWifiState.set(wifiState); 3522 3523 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3524 3525 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3526 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3527 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3528 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3529 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3530 } 3531 3532 private void setWifiApState(int wifiApState) { 3533 final int previousWifiApState = mWifiApState.get(); 3534 3535 try { 3536 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3537 mBatteryStats.noteWifiOn(); 3538 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3539 mBatteryStats.noteWifiOff(); 3540 } 3541 } catch (RemoteException e) { 3542 loge("Failed to note battery stats in wifi"); 3543 } 3544 3545 // Update state 3546 mWifiApState.set(wifiApState); 3547 3548 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3549 3550 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3551 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3552 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3553 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3554 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3555 } 3556 3557 /* 3558 void ageOutScanResults(int age) { 3559 synchronized(mScanResultCache) { 3560 // Trim mScanResults, which prevent WifiStateMachine to return 3561 // obsolete scan results to queriers 3562 long now = System.CurrentTimeMillis(); 3563 for (int i = 0; i < mScanResults.size(); i++) { 3564 ScanResult result = mScanResults.get(i); 3565 if ((result.seen > now || (now - result.seen) > age)) { 3566 mScanResults.remove(i); 3567 } 3568 } 3569 } 3570 }*/ 3571 3572 private static final String IE_STR = "ie="; 3573 private static final String ID_STR = "id="; 3574 private static final String BSSID_STR = "bssid="; 3575 private static final String FREQ_STR = "freq="; 3576 private static final String LEVEL_STR = "level="; 3577 private static final String TSF_STR = "tsf="; 3578 private static final String FLAGS_STR = "flags="; 3579 private static final String SSID_STR = "ssid="; 3580 private static final String DELIMITER_STR = "===="; 3581 private static final String END_STR = "####"; 3582 3583 int emptyScanResultCount = 0; 3584 3585 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3586 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3587 3588 /** 3589 * Format: 3590 * <p/> 3591 * id=1 3592 * bssid=68:7f:76:d7:1a:6e 3593 * freq=2412 3594 * level=-44 3595 * tsf=1344626243700342 3596 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3597 * ssid=zfdy 3598 * ==== 3599 * id=2 3600 * bssid=68:5f:74:d7:1a:6f 3601 * freq=5180 3602 * level=-73 3603 * tsf=1344626243700373 3604 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3605 * ssid=zuby 3606 * ==== 3607 */ 3608 private void setScanResults() { 3609 mNumScanResultsKnown = 0; 3610 mNumScanResultsReturned = 0; 3611 String bssid = ""; 3612 int level = 0; 3613 int freq = 0; 3614 long tsf = 0; 3615 String flags = ""; 3616 WifiSsid wifiSsid = null; 3617 String scanResults; 3618 String tmpResults; 3619 StringBuffer scanResultsBuf = new StringBuffer(); 3620 int sid = 0; 3621 3622 while (true) { 3623 tmpResults = mWifiNative.scanResults(sid); 3624 if (TextUtils.isEmpty(tmpResults)) break; 3625 scanResultsBuf.append(tmpResults); 3626 scanResultsBuf.append("\n"); 3627 String[] lines = tmpResults.split("\n"); 3628 sid = -1; 3629 for (int i = lines.length - 1; i >= 0; i--) { 3630 if (lines[i].startsWith(END_STR)) { 3631 break; 3632 } else if (lines[i].startsWith(ID_STR)) { 3633 try { 3634 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3635 } catch (NumberFormatException e) { 3636 // Nothing to do 3637 } 3638 break; 3639 } 3640 } 3641 if (sid == -1) break; 3642 } 3643 3644 // Age out scan results, we return all scan results found in the last 12 seconds, 3645 // and NOT all scan results since last scan. 3646 // ageOutScanResults(12000); 3647 3648 scanResults = scanResultsBuf.toString(); 3649 if (TextUtils.isEmpty(scanResults)) { 3650 emptyScanResultCount++; 3651 if (emptyScanResultCount > 10) { 3652 // If we got too many empty scan results, the current scan cache is stale, 3653 // hence clear it. 3654 mScanResults = new ArrayList<>(); 3655 } 3656 return; 3657 } 3658 3659 emptyScanResultCount = 0; 3660 3661 mWifiConfigStore.trimANQPCache(false); 3662 3663 // note that all these splits and substrings keep references to the original 3664 // huge string buffer while the amount we really want is generally pretty small 3665 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3666 synchronized (mScanResultCache) { 3667 mScanResults = new ArrayList<>(); 3668 String[] lines = scanResults.split("\n"); 3669 final int bssidStrLen = BSSID_STR.length(); 3670 final int flagLen = FLAGS_STR.length(); 3671 String infoElements = null; 3672 List<String> anqpLines = null; 3673 3674 for (String line : lines) { 3675 if (line.startsWith(BSSID_STR)) { 3676 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3677 } else if (line.startsWith(FREQ_STR)) { 3678 try { 3679 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3680 } catch (NumberFormatException e) { 3681 freq = 0; 3682 } 3683 } else if (line.startsWith(LEVEL_STR)) { 3684 try { 3685 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3686 /* some implementations avoid negative values by adding 256 3687 * so we need to adjust for that here. 3688 */ 3689 if (level > 0) level -= 256; 3690 } catch (NumberFormatException e) { 3691 level = 0; 3692 } 3693 } else if (line.startsWith(TSF_STR)) { 3694 try { 3695 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3696 } catch (NumberFormatException e) { 3697 tsf = 0; 3698 } 3699 } else if (line.startsWith(FLAGS_STR)) { 3700 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3701 } else if (line.startsWith(SSID_STR)) { 3702 wifiSsid = WifiSsid.createFromAsciiEncoded( 3703 line.substring(SSID_STR.length())); 3704 } else if (line.startsWith(IE_STR)) { 3705 infoElements = line; 3706 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3707 if (anqpLines == null) { 3708 anqpLines = new ArrayList<>(); 3709 } 3710 anqpLines.add(line); 3711 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3712 if (bssid != null) { 3713 try { 3714 NetworkDetail networkDetail = 3715 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3716 3717 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3718 if (!xssid.equals(networkDetail.getTrimmedSSID())) { 3719 Log.d(Utils.hs2LogTag(getClass()), 3720 String.format("Inconsistent SSID on BSSID '%s':" + 3721 " '%s' vs '%s': %s", 3722 bssid, xssid, networkDetail.getSSID(), infoElements)); 3723 } 3724 3725 if (networkDetail.hasInterworking()) { 3726 Log.d(Utils.hs2LogTag(getClass()), "HSNwk: '" + networkDetail); 3727 } 3728 3729 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3730 if (scanDetail != null) { 3731 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3732 flags, freq, tsf); 3733 } else { 3734 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3735 flags, level, freq, tsf); 3736 mScanResultCache.put(networkDetail, scanDetail); 3737 } 3738 3739 mNumScanResultsReturned++; // Keep track of how many scan results we got 3740 // as part of this scan's processing 3741 mScanResults.add(scanDetail); 3742 } catch (IllegalArgumentException iae) { 3743 Log.d(TAG, "Failed to parse information elements: " + iae); 3744 } 3745 } 3746 bssid = null; 3747 level = 0; 3748 freq = 0; 3749 tsf = 0; 3750 flags = ""; 3751 wifiSsid = null; 3752 infoElements = null; 3753 anqpLines = null; 3754 } 3755 } 3756 } 3757 3758 boolean attemptAutoJoin = true; 3759 SupplicantState state = mWifiInfo.getSupplicantState(); 3760 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3761 if (getCurrentState() == mRoamingState 3762 || getCurrentState() == mObtainingIpState 3763 || getCurrentState() == mScanModeState 3764 || getCurrentState() == mDisconnectingState 3765 || (getCurrentState() == mConnectedState 3766 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3767 || linkDebouncing 3768 || state == SupplicantState.ASSOCIATING 3769 || state == SupplicantState.AUTHENTICATING 3770 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3771 || state == SupplicantState.GROUP_HANDSHAKE 3772 || (/* keep autojoin enabled if user has manually selected a wifi network, 3773 so as to make sure we reliably remain connected to this network */ 3774 mConnectionRequests == 0 && selection == null)) { 3775 // Dont attempt auto-joining again while we are already attempting to join 3776 // and/or obtaining Ip address 3777 attemptAutoJoin = false; 3778 } 3779 if (DBG) { 3780 if (selection == null) { 3781 selection = "<none>"; 3782 } 3783 loge("wifi setScanResults state" + getCurrentState() 3784 + " sup_state=" + state 3785 + " debouncing=" + linkDebouncing 3786 + " mConnectionRequests=" + mConnectionRequests 3787 + " selection=" + selection); 3788 } 3789 if (attemptAutoJoin) { 3790 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3791 } 3792 // Loose last selected configuration if we have been disconnected for 5 minutes 3793 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3794 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3795 } 3796 3797 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3798 synchronized (mScanResultCache) { 3799 // AutoJoincontroller will directly acces the scan result list and update it with 3800 // ScanResult status 3801 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3802 } 3803 } 3804 if (linkDebouncing) { 3805 // If debouncing, we dont re-select a SSID or BSSID hence 3806 // there is no need to call the network selection code 3807 // in WifiAutoJoinController, instead, 3808 // just try to reconnect to the same SSID by triggering a roam 3809 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3810 } 3811 } 3812 3813 /* 3814 * Fetch RSSI, linkspeed, and frequency on current connection 3815 */ 3816 private void fetchRssiLinkSpeedAndFrequencyNative() { 3817 int newRssi = -1; 3818 int newLinkSpeed = -1; 3819 int newFrequency = -1; 3820 3821 String signalPoll = mWifiNative.signalPoll(); 3822 3823 if (signalPoll != null) { 3824 String[] lines = signalPoll.split("\n"); 3825 for (String line : lines) { 3826 String[] prop = line.split("="); 3827 if (prop.length < 2) continue; 3828 try { 3829 if (prop[0].equals("RSSI")) { 3830 newRssi = Integer.parseInt(prop[1]); 3831 } else if (prop[0].equals("LINKSPEED")) { 3832 newLinkSpeed = Integer.parseInt(prop[1]); 3833 } else if (prop[0].equals("FREQUENCY")) { 3834 newFrequency = Integer.parseInt(prop[1]); 3835 } 3836 } catch (NumberFormatException e) { 3837 //Ignore, defaults on rssi and linkspeed are assigned 3838 } 3839 } 3840 } 3841 3842 if (PDBG) { 3843 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3844 + Integer.toString(newRssi) + " linkspeed=" 3845 + Integer.toString(newLinkSpeed)); 3846 } 3847 3848 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3849 // screen out invalid values 3850 /* some implementations avoid negative values by adding 256 3851 * so we need to adjust for that here. 3852 */ 3853 if (newRssi > 0) newRssi -= 256; 3854 mWifiInfo.setRssi(newRssi); 3855 /* 3856 * Rather then sending the raw RSSI out every time it 3857 * changes, we precalculate the signal level that would 3858 * be displayed in the status bar, and only send the 3859 * broadcast if that much more coarse-grained number 3860 * changes. This cuts down greatly on the number of 3861 * broadcasts, at the cost of not informing others 3862 * interested in RSSI of all the changes in signal 3863 * level. 3864 */ 3865 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3866 if (newSignalLevel != mLastSignalLevel) { 3867 sendRssiChangeBroadcast(newRssi); 3868 } 3869 mLastSignalLevel = newSignalLevel; 3870 } else { 3871 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3872 } 3873 3874 if (newLinkSpeed != -1) { 3875 mWifiInfo.setLinkSpeed(newLinkSpeed); 3876 } 3877 if (newFrequency > 0) { 3878 if (ScanResult.is5GHz(newFrequency)) { 3879 mWifiConnectionStatistics.num5GhzConnected++; 3880 } 3881 if (ScanResult.is24GHz(newFrequency)) { 3882 mWifiConnectionStatistics.num24GhzConnected++; 3883 } 3884 mWifiInfo.setFrequency(newFrequency); 3885 } 3886 mWifiConfigStore.updateConfiguration(mWifiInfo); 3887 } 3888 3889 /** 3890 * Determine if we need to switch network: 3891 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3892 * - match the uregncy of the switch versus the packet usage at the interface 3893 */ 3894 boolean shouldSwitchNetwork(int networkDelta) { 3895 int delta; 3896 if (networkDelta <= 0) { 3897 return false; 3898 } 3899 delta = networkDelta; 3900 if (mWifiInfo != null) { 3901 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3902 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3903 // If AutoJoin while associated is not enabled, 3904 // we should never switch network when already associated 3905 delta = -1000; 3906 } else { 3907 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3908 // TODO: at the interface. We should also discriminate between ucast and mcast, 3909 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3910 // TODO: broadcasts 3911 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3912 delta -= 999; 3913 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3914 delta -= 6; 3915 } 3916 loge("WifiStateMachine shouldSwitchNetwork " 3917 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3918 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3919 + " delta " + networkDelta + " -> " + delta); 3920 } 3921 } else { 3922 loge("WifiStateMachine shouldSwitchNetwork " 3923 + " delta " + networkDelta + " -> " + delta); 3924 } 3925 if (delta > 0) { 3926 return true; 3927 } 3928 return false; 3929 } 3930 3931 // Polling has completed, hence we wont have a score anymore 3932 private void cleanWifiScore() { 3933 mWifiInfo.txBadRate = 0; 3934 mWifiInfo.txSuccessRate = 0; 3935 mWifiInfo.txRetriesRate = 0; 3936 mWifiInfo.rxSuccessRate = 0; 3937 } 3938 3939 int mBadLinkspeedcount = 0; 3940 3941 // For debug, provide information about the last scoring operation 3942 String wifiScoringReport = null; 3943 3944 private void calculateWifiScore(WifiLinkLayerStats stats) { 3945 StringBuilder sb = new StringBuilder(); 3946 3947 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3948 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3949 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3950 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3951 < mWifiConfigStore.badLinkSpeed5); 3952 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3953 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3954 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3955 >= mWifiConfigStore.goodLinkSpeed5); 3956 3957 if (isBadLinkspeed) { 3958 if (mBadLinkspeedcount < 6) 3959 mBadLinkspeedcount++; 3960 } else { 3961 if (mBadLinkspeedcount > 0) 3962 mBadLinkspeedcount--; 3963 } 3964 3965 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3966 if (isGoodLinkspeed) sb.append(" gl"); 3967 3968 /** 3969 * We want to make sure that we use the 24GHz RSSI thresholds if 3970 * there are 2.4GHz scan results 3971 * otherwise we end up lowering the score based on 5GHz values 3972 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3973 * We also might unblacklist the configuation based on 2.4GHz 3974 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3975 */ 3976 boolean use24Thresholds = false; 3977 boolean homeNetworkBoost = false; 3978 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3979 ScanDetailCache scanDetailCache = 3980 mWifiConfigStore.getScanDetailCache(currentConfiguration); 3981 if (currentConfiguration != null && scanDetailCache != null) { 3982 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 3983 if (currentConfiguration.visibility != null) { 3984 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3985 && currentConfiguration.visibility.rssi24 3986 >= (currentConfiguration.visibility.rssi5 - 2)) { 3987 use24Thresholds = true; 3988 } 3989 } 3990 if (scanDetailCache.size() <= 6 3991 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3992 && currentConfiguration.allowedKeyManagement. 3993 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3994 // A PSK network with less than 6 known BSSIDs 3995 // This is most likely a home network and thus we want to stick to wifi more 3996 homeNetworkBoost = true; 3997 } 3998 } 3999 if (homeNetworkBoost) sb.append(" hn"); 4000 if (use24Thresholds) sb.append(" u24"); 4001 4002 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4003 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4004 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4005 4006 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4007 4008 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4009 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4010 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4011 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4012 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4013 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4014 4015 if (isBadRSSI) sb.append(" br"); 4016 if (isLowRSSI) sb.append(" lr"); 4017 if (isHighRSSI) sb.append(" hr"); 4018 4019 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4020 if (currentConfiguration != null && 4021 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4022 if (isBadRSSI) { 4023 currentConfiguration.numTicksAtBadRSSI++; 4024 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4025 // We remained associated for a compound amount of time while passing 4026 // traffic, hence loose the corresponding user triggered disabled stats 4027 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4028 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4029 } 4030 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4031 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4032 } 4033 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4034 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4035 } 4036 currentConfiguration.numTicksAtBadRSSI = 0; 4037 } 4038 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4039 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4040 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4041 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4042 score = score - 5; 4043 penalizedDueToUserTriggeredDisconnect = 1; 4044 sb.append(" p1"); 4045 } 4046 } else if (isLowRSSI) { 4047 currentConfiguration.numTicksAtLowRSSI++; 4048 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4049 // We remained associated for a compound amount of time while passing 4050 // traffic, hence loose the corresponding user triggered disabled stats 4051 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4052 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4053 } 4054 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4055 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4056 } 4057 currentConfiguration.numTicksAtLowRSSI = 0; 4058 } 4059 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4060 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4061 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4062 score = score - 5; 4063 penalizedDueToUserTriggeredDisconnect = 2; 4064 sb.append(" p2"); 4065 } 4066 } else if (!isHighRSSI) { 4067 currentConfiguration.numTicksAtNotHighRSSI++; 4068 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4069 // We remained associated for a compound amount of time while passing 4070 // traffic, hence loose the corresponding user triggered disabled stats 4071 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4072 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4073 } 4074 currentConfiguration.numTicksAtNotHighRSSI = 0; 4075 } 4076 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4077 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4078 score = score - 5; 4079 penalizedDueToUserTriggeredDisconnect = 3; 4080 sb.append(" p3"); 4081 } 4082 } 4083 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4084 currentConfiguration.numTicksAtLowRSSI, 4085 currentConfiguration.numTicksAtNotHighRSSI)); 4086 } 4087 4088 if (PDBG) { 4089 String rssiStatus = ""; 4090 if (isBadRSSI) rssiStatus += " badRSSI "; 4091 else if (isHighRSSI) rssiStatus += " highRSSI "; 4092 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4093 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4094 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4095 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4096 + " score=" + Integer.toString(mWifiInfo.score) 4097 + rssiStatus 4098 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4099 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4100 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4101 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4102 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4103 } 4104 4105 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4106 && (isBadRSSI || isLowRSSI)) { 4107 // Link is stuck 4108 if (mWifiInfo.linkStuckCount < 5) 4109 mWifiInfo.linkStuckCount += 1; 4110 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4111 if (PDBG) loge(" bad link -> stuck count =" 4112 + Integer.toString(mWifiInfo.linkStuckCount)); 4113 } else if (mWifiInfo.txBadRate < 0.3) { 4114 if (mWifiInfo.linkStuckCount > 0) 4115 mWifiInfo.linkStuckCount -= 1; 4116 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4117 if (PDBG) loge(" good link -> stuck count =" 4118 + Integer.toString(mWifiInfo.linkStuckCount)); 4119 } 4120 4121 sb.append(String.format(" [%d", score)); 4122 4123 if (mWifiInfo.linkStuckCount > 1) { 4124 // Once link gets stuck for more than 3 seconds, start reducing the score 4125 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4126 } 4127 sb.append(String.format(",%d", score)); 4128 4129 if (isBadLinkspeed) { 4130 score -= 4; 4131 if (PDBG) { 4132 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4133 + " score=" + Integer.toString(score)); 4134 } 4135 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4136 score += 4; // So as bad rssi alone dont kill us 4137 } 4138 sb.append(String.format(",%d", score)); 4139 4140 if (isBadRSSI) { 4141 if (mWifiInfo.badRssiCount < 7) 4142 mWifiInfo.badRssiCount += 1; 4143 } else if (isLowRSSI) { 4144 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4145 if (mWifiInfo.badRssiCount > 0) { 4146 // Decrement bad Rssi count 4147 mWifiInfo.badRssiCount -= 1; 4148 } 4149 } else { 4150 mWifiInfo.badRssiCount = 0; 4151 mWifiInfo.lowRssiCount = 0; 4152 } 4153 4154 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4155 sb.append(String.format(",%d", score)); 4156 4157 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4158 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4159 + " --> score " + Integer.toString(score)); 4160 4161 4162 if (isHighRSSI) { 4163 score += 5; 4164 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 4165 } 4166 sb.append(String.format(",%d]", score)); 4167 4168 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4169 4170 //sanitize boundaries 4171 if (score > NetworkAgent.WIFI_BASE_SCORE) 4172 score = NetworkAgent.WIFI_BASE_SCORE; 4173 if (score < 0) 4174 score = 0; 4175 4176 //report score 4177 if (score != mWifiInfo.score) { 4178 if (DBG) { 4179 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4180 } 4181 mWifiInfo.score = score; 4182 if (mNetworkAgent != null) { 4183 mNetworkAgent.sendNetworkScore(score); 4184 } 4185 } 4186 wifiScoringReport = sb.toString(); 4187 } 4188 4189 public double getTxPacketRate() { 4190 if (mWifiInfo != null) { 4191 return mWifiInfo.txSuccessRate; 4192 } 4193 return -1; 4194 } 4195 4196 public double getRxPacketRate() { 4197 if (mWifiInfo != null) { 4198 return mWifiInfo.rxSuccessRate; 4199 } 4200 return -1; 4201 } 4202 4203 /** 4204 * Fetch TX packet counters on current connection 4205 */ 4206 private void fetchPktcntNative(RssiPacketCountInfo info) { 4207 String pktcntPoll = mWifiNative.pktcntPoll(); 4208 4209 if (pktcntPoll != null) { 4210 String[] lines = pktcntPoll.split("\n"); 4211 for (String line : lines) { 4212 String[] prop = line.split("="); 4213 if (prop.length < 2) continue; 4214 try { 4215 if (prop[0].equals("TXGOOD")) { 4216 info.txgood = Integer.parseInt(prop[1]); 4217 } else if (prop[0].equals("TXBAD")) { 4218 info.txbad = Integer.parseInt(prop[1]); 4219 } 4220 } catch (NumberFormatException e) { 4221 // Ignore 4222 } 4223 } 4224 } 4225 } 4226 4227 private boolean clearIPv4Address(String iface) { 4228 try { 4229 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4230 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4231 mNwService.setInterfaceConfig(iface, ifcg); 4232 return true; 4233 } catch (RemoteException e) { 4234 return false; 4235 } 4236 } 4237 4238 private boolean isProvisioned(LinkProperties lp) { 4239 return lp.isProvisioned() || 4240 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4241 } 4242 4243 /** 4244 * Updates mLinkProperties by merging information from various sources. 4245 * <p/> 4246 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4247 * netlink, static configuration, ...). When one of these sources of information has updated 4248 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4249 * information that came from other sources. Instead, when one of those sources has new 4250 * information, we update the object that tracks the information from that source and then 4251 * call this method to apply the change to mLinkProperties. 4252 * <p/> 4253 * The information in mLinkProperties is currently obtained as follows: 4254 * - Interface name: set in the constructor. 4255 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4256 * - IPv4 routes, DNS servers, and domains: DHCP. 4257 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4258 * - HTTP proxy: the wifi config store. 4259 */ 4260 private void updateLinkProperties(int reason) { 4261 LinkProperties newLp = new LinkProperties(); 4262 4263 // Interface name and proxy are locally configured. 4264 newLp.setInterfaceName(mInterfaceName); 4265 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4266 4267 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4268 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4269 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4270 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4271 newLp.addRoute(route); 4272 } 4273 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4274 newLp.addDnsServer(dns); 4275 } 4276 4277 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4278 synchronized (mDhcpResultsLock) { 4279 // Even when we're using static configuration, we don't need to look at the config 4280 // store, because static IP configuration also populates mDhcpResults. 4281 if ((mDhcpResults != null)) { 4282 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4283 newLp.addRoute(route); 4284 } 4285 for (InetAddress dns : mDhcpResults.dnsServers) { 4286 newLp.addDnsServer(dns); 4287 } 4288 newLp.setDomains(mDhcpResults.domains); 4289 } 4290 } 4291 4292 final boolean linkChanged = !newLp.equals(mLinkProperties); 4293 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4294 final boolean isProvisioned = isProvisioned(newLp); 4295 final boolean lostIPv4Provisioning = 4296 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4297 final DetailedState detailedState = getNetworkDetailedState(); 4298 4299 if (linkChanged) { 4300 if (DBG) { 4301 log("Link configuration changed for netId: " + mLastNetworkId 4302 + " old: " + mLinkProperties + " new: " + newLp); 4303 } 4304 mLinkProperties = newLp; 4305 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 4306 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 4307 } 4308 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4309 } 4310 4311 if (DBG) { 4312 StringBuilder sb = new StringBuilder(); 4313 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4314 sb.append(" state: " + detailedState); 4315 sb.append(" reason: " + smToString(reason)); 4316 4317 if (mLinkProperties != null) { 4318 if (mLinkProperties.hasIPv4Address()) { 4319 sb.append(" v4"); 4320 } 4321 if (mLinkProperties.hasGlobalIPv6Address()) { 4322 sb.append(" v6"); 4323 } 4324 if (mLinkProperties.hasIPv4DefaultRoute()) { 4325 sb.append(" v4r"); 4326 } 4327 if (mLinkProperties.hasIPv6DefaultRoute()) { 4328 sb.append(" v6r"); 4329 } 4330 if (mLinkProperties.hasIPv4DnsServer()) { 4331 sb.append(" v4dns"); 4332 } 4333 if (mLinkProperties.hasIPv6DnsServer()) { 4334 sb.append(" v6dns"); 4335 } 4336 if (isProvisioned) { 4337 sb.append(" isprov"); 4338 } 4339 } 4340 loge(sb.toString()); 4341 } 4342 4343 // If we just configured or lost IP configuration, do the needful. 4344 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4345 // here because those should only be called if we're attempting to connect or already 4346 // connected, whereas updateLinkProperties can be called at any time. 4347 switch (reason) { 4348 case DhcpStateMachine.DHCP_SUCCESS: 4349 case CMD_STATIC_IP_SUCCESS: 4350 // IPv4 provisioning succeded. Advance to connected state. 4351 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4352 if (!isProvisioned) { 4353 // Can never happen unless DHCP reports success but isProvisioned thinks the 4354 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4355 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4356 // TODO: disconnect here instead. If our configuration is not usable, there's no 4357 // point in staying connected, and if mLinkProperties is out of sync with 4358 // reality, that will cause problems in the future. 4359 loge("IPv4 config succeeded, but not provisioned"); 4360 } 4361 break; 4362 4363 case DhcpStateMachine.DHCP_FAILURE: 4364 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4365 // give up and disconnect. 4366 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4367 if (!isProvisioned || lostIPv4Provisioning) { 4368 sendMessage(CMD_IP_CONFIGURATION_LOST); 4369 } else { 4370 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4371 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4372 4373 // To be sure we don't get stuck with a non-working network if all we had is 4374 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4375 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4376 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4377 // necessary for provisioning, its deletion will cause us to disconnect. 4378 // 4379 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4380 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4381 // not return true if we're using DHCP and don't have an IPv4 default route. So 4382 // for now it's only here for extra redundancy. However, it will increase 4383 // robustness if we move to getting IPv4 routes from netlink as well. 4384 loge("DHCP failure: provisioned, clearing IPv4 address."); 4385 if (!clearIPv4Address(mInterfaceName)) { 4386 sendMessage(CMD_IP_CONFIGURATION_LOST); 4387 } 4388 } 4389 break; 4390 4391 case CMD_STATIC_IP_FAILURE: 4392 // Static configuration was invalid, or an error occurred in applying it. Give up. 4393 sendMessage(CMD_IP_CONFIGURATION_LOST); 4394 break; 4395 4396 case CMD_UPDATE_LINKPROPERTIES: 4397 // IP addresses, DNS servers, etc. changed. Act accordingly. 4398 if (wasProvisioned && !isProvisioned) { 4399 // We no longer have a usable network configuration. Disconnect. 4400 sendMessage(CMD_IP_CONFIGURATION_LOST); 4401 } else if (!wasProvisioned && isProvisioned) { 4402 // We have a usable IPv6-only config. Advance to connected state. 4403 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4404 } 4405 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4406 // If anything has changed and we're already connected, send out a notification. 4407 sendLinkConfigurationChangedBroadcast(); 4408 } 4409 break; 4410 } 4411 } 4412 4413 /** 4414 * Clears all our link properties. 4415 */ 4416 private void clearLinkProperties() { 4417 // Clear the link properties obtained from DHCP and netlink. 4418 synchronized (mDhcpResultsLock) { 4419 if (mDhcpResults != null) { 4420 mDhcpResults.clear(); 4421 } 4422 } 4423 mNetlinkTracker.clearLinkProperties(); 4424 4425 // Now clear the merged link properties. 4426 mLinkProperties.clear(); 4427 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4428 } 4429 4430 /** 4431 * try to update default route MAC address. 4432 */ 4433 private String updateDefaultRouteMacAddress(int timeout) { 4434 String address = null; 4435 for (RouteInfo route : mLinkProperties.getRoutes()) { 4436 if (route.isDefaultRoute() && route.hasGateway()) { 4437 InetAddress gateway = route.getGateway(); 4438 if (gateway instanceof Inet4Address) { 4439 if (PDBG) { 4440 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4441 + gateway.getHostAddress()); 4442 } 4443 address = macAddressFromRoute(gateway.getHostAddress()); 4444 /* The gateway's MAC address is known */ 4445 if ((address == null) && (timeout > 0)) { 4446 boolean reachable = false; 4447 try { 4448 reachable = gateway.isReachable(timeout); 4449 } catch (Exception e) { 4450 loge("updateDefaultRouteMacAddress exception reaching :" 4451 + gateway.getHostAddress()); 4452 4453 } finally { 4454 if (reachable == true) { 4455 4456 address = macAddressFromRoute(gateway.getHostAddress()); 4457 if (PDBG) { 4458 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4459 + gateway.getHostAddress() + " found " + address); 4460 } 4461 } 4462 } 4463 } 4464 if (address != null) { 4465 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4466 } 4467 } 4468 } 4469 } 4470 return address; 4471 } 4472 4473 private void sendScanResultsAvailableBroadcast() { 4474 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4475 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4476 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4477 } 4478 4479 private void sendRssiChangeBroadcast(final int newRssi) { 4480 try { 4481 mBatteryStats.noteWifiRssiChanged(newRssi); 4482 } catch (RemoteException e) { 4483 // Won't happen. 4484 } 4485 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4486 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4487 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4488 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4489 } 4490 4491 private void sendNetworkStateChangeBroadcast(String bssid) { 4492 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4493 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4494 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4495 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4496 if (bssid != null) 4497 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4498 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4499 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4500 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4501 } 4502 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4503 } 4504 4505 private void sendLinkConfigurationChangedBroadcast() { 4506 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4507 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4508 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4509 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4510 } 4511 4512 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4513 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4514 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4515 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4516 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4517 } 4518 4519 /** 4520 * Record the detailed state of a network. 4521 * 4522 * @param state the new {@code DetailedState} 4523 */ 4524 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4525 boolean hidden = false; 4526 4527 if (linkDebouncing || isRoaming()) { 4528 // There is generally a confusion in the system about colluding 4529 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4530 // which leads to multiple confusion. 4531 // 4532 // If link is de-bouncing or roaming, we already have an IP address 4533 // as well we were connected and are doing L2 cycles of 4534 // reconnecting or renewing IP address to check that we still have it 4535 // This L2 link flapping should ne be reflected into the Network state 4536 // which is the state of the WiFi Network visible to Layer 3 and applications 4537 // Note that once debouncing and roaming are completed, we will 4538 // set the Network state to where it should be, or leave it as unchanged 4539 // 4540 hidden = true; 4541 } 4542 if (DBG) { 4543 log("setDetailed state, old =" 4544 + mNetworkInfo.getDetailedState() + " and new state=" + state 4545 + " hidden=" + hidden); 4546 } 4547 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4548 // Always indicate that SSID has changed 4549 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4550 if (DBG) { 4551 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4552 } 4553 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4554 sendNetworkStateChangeBroadcast(null); 4555 } 4556 } 4557 if (hidden == true) { 4558 return false; 4559 } 4560 4561 if (state != mNetworkInfo.getDetailedState()) { 4562 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4563 if (mNetworkAgent != null) { 4564 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4565 } 4566 sendNetworkStateChangeBroadcast(null); 4567 return true; 4568 } 4569 return false; 4570 } 4571 4572 private DetailedState getNetworkDetailedState() { 4573 return mNetworkInfo.getDetailedState(); 4574 } 4575 4576 4577 private SupplicantState handleSupplicantStateChange(Message message) { 4578 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4579 SupplicantState state = stateChangeResult.state; 4580 // Supplicant state change 4581 // [31-13] Reserved for future use 4582 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4583 // 50023 supplicant_state_changed (custom|1|5) 4584 mWifiInfo.setSupplicantState(state); 4585 // Network id is only valid when we start connecting 4586 if (SupplicantState.isConnecting(state)) { 4587 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4588 } else { 4589 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4590 } 4591 4592 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4593 4594 if (mWhiteListedSsids != null 4595 && mWhiteListedSsids.length > 0 4596 && stateChangeResult.wifiSsid != null) { 4597 String SSID = stateChangeResult.wifiSsid.toString(); 4598 String currentSSID = mWifiInfo.getSSID(); 4599 if (SSID != null 4600 && currentSSID != null 4601 && !SSID.equals(WifiSsid.NONE)) { 4602 // Remove quote before comparing 4603 if (SSID.length() >= 2 && SSID.charAt(0) == '"' 4604 && SSID.charAt(SSID.length() - 1) == '"') 4605 { 4606 SSID = SSID.substring(1, SSID.length() - 1); 4607 } 4608 if (currentSSID.length() >= 2 && currentSSID.charAt(0) == '"' 4609 && currentSSID.charAt(currentSSID.length() - 1) == '"') { 4610 currentSSID = currentSSID.substring(1, currentSSID.length() - 1); 4611 } 4612 if ((!SSID.equals(currentSSID)) && (getCurrentState() == mConnectedState)) { 4613 lastConnectAttempt = System.currentTimeMillis(); 4614 targetWificonfiguration 4615 = mWifiConfigStore.getWifiConfiguration(mWifiInfo.getNetworkId()); 4616 transitionTo(mRoamingState); 4617 } 4618 } 4619 } 4620 4621 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4622 4623 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4624 4625 return state; 4626 } 4627 4628 /** 4629 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4630 * using the interface, stopping DHCP & disabling interface 4631 */ 4632 private void handleNetworkDisconnect() { 4633 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4634 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4635 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4636 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4637 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4638 4639 4640 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4641 4642 stopDhcp(); 4643 4644 try { 4645 mNwService.clearInterfaceAddresses(mInterfaceName); 4646 mNwService.disableIpv6(mInterfaceName); 4647 } catch (Exception e) { 4648 loge("Failed to clear addresses or disable ipv6" + e); 4649 } 4650 4651 /* Reset data structures */ 4652 mBadLinkspeedcount = 0; 4653 mWifiInfo.reset(); 4654 linkDebouncing = false; 4655 /* Reset roaming parameters */ 4656 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4657 4658 /** 4659 * fullBandConnectedTimeIntervalMilli: 4660 * - start scans at mWifiConfigStore.wifiAssociatedShortScanIntervalMilli seconds interval 4661 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4662 * Initialize to sane value = 20 seconds 4663 */ 4664 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4665 4666 setNetworkDetailedState(DetailedState.DISCONNECTED); 4667 if (mNetworkAgent != null) { 4668 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4669 mNetworkAgent = null; 4670 } 4671 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4672 4673 /* Clear network properties */ 4674 clearLinkProperties(); 4675 4676 /* Cend event to CM & network change broadcast */ 4677 sendNetworkStateChangeBroadcast(mLastBssid); 4678 4679 /* Cancel auto roam requests */ 4680 autoRoamSetBSSID(mLastNetworkId, "any"); 4681 4682 mLastBssid = null; 4683 registerDisconnected(); 4684 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4685 } 4686 4687 private void handleSupplicantConnectionLoss(boolean killSupplicant) { 4688 /* Socket connection can be lost when we do a graceful shutdown 4689 * or when the driver is hung. Ensure supplicant is stopped here. 4690 */ 4691 if (killSupplicant) { 4692 mWifiMonitor.killSupplicant(mP2pSupported); 4693 } 4694 mWifiNative.closeSupplicantConnection(); 4695 sendSupplicantConnectionChangedBroadcast(false); 4696 setWifiState(WIFI_STATE_DISABLED); 4697 } 4698 4699 void handlePreDhcpSetup() { 4700 mDhcpActive = true; 4701 if (!mBluetoothConnectionActive) { 4702 /* 4703 * There are problems setting the Wi-Fi driver's power 4704 * mode to active when bluetooth coexistence mode is 4705 * enabled or sense. 4706 * <p> 4707 * We set Wi-Fi to active mode when 4708 * obtaining an IP address because we've found 4709 * compatibility issues with some routers with low power 4710 * mode. 4711 * <p> 4712 * In order for this active power mode to properly be set, 4713 * we disable coexistence mode until we're done with 4714 * obtaining an IP address. One exception is if we 4715 * are currently connected to a headset, since disabling 4716 * coexistence would interrupt that connection. 4717 */ 4718 // Disable the coexistence mode 4719 mWifiNative.setBluetoothCoexistenceMode( 4720 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4721 } 4722 4723 // Disable power save and suspend optimizations during DHCP 4724 // Note: The order here is important for now. Brcm driver changes 4725 // power settings when we control suspend mode optimizations. 4726 // TODO: Remove this comment when the driver is fixed. 4727 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4728 mWifiNative.setPowerSave(false); 4729 4730 // Update link layer stats 4731 getWifiLinkLayerStats(false); 4732 4733 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4734 Message msg = new Message(); 4735 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4736 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4737 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4738 msg.obj = mDhcpStateMachine; 4739 mWifiP2pChannel.sendMessage(msg); 4740 } 4741 4742 4743 private boolean useLegacyDhcpClient() { 4744 return Settings.Global.getInt( 4745 mContext.getContentResolver(), 4746 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4747 } 4748 4749 private void maybeInitDhcpStateMachine() { 4750 if (mDhcpStateMachine == null) { 4751 if (useLegacyDhcpClient()) { 4752 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4753 mContext, WifiStateMachine.this, mInterfaceName); 4754 } else { 4755 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4756 mContext, WifiStateMachine.this, mInterfaceName); 4757 } 4758 } 4759 } 4760 4761 void startDhcp() { 4762 maybeInitDhcpStateMachine(); 4763 mDhcpStateMachine.registerForPreDhcpNotification(); 4764 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4765 } 4766 4767 void renewDhcp() { 4768 maybeInitDhcpStateMachine(); 4769 mDhcpStateMachine.registerForPreDhcpNotification(); 4770 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4771 } 4772 4773 void stopDhcp() { 4774 if (mDhcpStateMachine != null) { 4775 /* In case we were in middle of DHCP operation restore back powermode */ 4776 handlePostDhcpSetup(); 4777 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4778 } 4779 } 4780 4781 void handlePostDhcpSetup() { 4782 /* Restore power save and suspend optimizations */ 4783 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4784 mWifiNative.setPowerSave(true); 4785 4786 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4787 4788 // Set the coexistence mode back to its default value 4789 mWifiNative.setBluetoothCoexistenceMode( 4790 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4791 4792 mDhcpActive = false; 4793 } 4794 4795 void connectScanningService() { 4796 4797 if (mWifiScanner == null) { 4798 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4799 } 4800 } 4801 4802 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4803 4804 if (PDBG) { 4805 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4806 loge("link address " + dhcpResults.ipAddress); 4807 } 4808 4809 synchronized (mDhcpResultsLock) { 4810 mDhcpResults = dhcpResults; 4811 } 4812 4813 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4814 if (isRoaming()) { 4815 if (addr instanceof Inet4Address) { 4816 int previousAddress = mWifiInfo.getIpAddress(); 4817 int newAddress = NetworkUtils.inetAddressToInt(addr); 4818 if (previousAddress != newAddress) { 4819 loge("handleIPv4Success, roaming and address changed" + 4820 mWifiInfo + " got: " + addr); 4821 } else { 4822 4823 } 4824 } else { 4825 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4826 addr.toString()); 4827 } 4828 } 4829 mWifiInfo.setInetAddress(addr); 4830 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4831 updateLinkProperties(reason); 4832 } 4833 4834 private void handleSuccessfulIpConfiguration() { 4835 mLastSignalLevel = -1; // Force update of signal strength 4836 WifiConfiguration c = getCurrentWifiConfiguration(); 4837 if (c != null) { 4838 // Reset IP failure tracking 4839 c.numConnectionFailures = 0; 4840 4841 // Tell the framework whether the newly connected network is trusted or untrusted. 4842 updateCapabilities(c); 4843 } 4844 if (c != null) { 4845 ScanResult result = getCurrentScanResult(); 4846 if (result == null) { 4847 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4848 c.configKey()); 4849 } else { 4850 // Clear the per BSSID failure count 4851 result.numIpConfigFailures = 0; 4852 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4853 // any BSSID, even though it may already have a non zero ip failure count, 4854 // this will typically happen if the user walks away and come back to his arrea 4855 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4856 // in supplicant for a couple of hours or a day 4857 mWifiConfigStore.clearBssidBlacklist(); 4858 } 4859 } 4860 } 4861 4862 private void handleIPv4Failure(int reason) { 4863 synchronized(mDhcpResultsLock) { 4864 if (mDhcpResults != null) { 4865 mDhcpResults.clear(); 4866 } 4867 } 4868 if (PDBG) { 4869 loge("wifistatemachine handleIPv4Failure"); 4870 } 4871 updateLinkProperties(reason); 4872 } 4873 4874 private void handleIpConfigurationLost() { 4875 mWifiInfo.setInetAddress(null); 4876 mWifiInfo.setMeteredHint(false); 4877 4878 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4879 "DHCP FAILURE", mWifiInfo.getBSSID()); 4880 4881 /* DHCP times out after about 30 seconds, we do a 4882 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4883 */ 4884 mWifiNative.disconnect(); 4885 } 4886 4887 private int convertFrequencyToChannelNumber(int frequency) { 4888 if (frequency >= 2412 && frequency <= 2484) { 4889 return (frequency -2412) / 5 + 1; 4890 } else if (frequency >= 5170 && frequency <=5825) { 4891 //DFS is included 4892 return (frequency -5170) / 5 + 34; 4893 } else { 4894 return 0; 4895 } 4896 } 4897 4898 private int chooseApChannel(int apBand) { 4899 int apChannel; 4900 int[] channel; 4901 4902 if (apBand == 0) { 4903 //for 2.4GHz, we only set the AP at channel 1,6,11 4904 apChannel = 5 * mRandom.nextInt(3) + 1; 4905 } else { 4906 //5G without DFS 4907 channel = mWifiNative.getChannelsForBand(2); 4908 if (channel != null && channel.length > 0) { 4909 apChannel = channel[mRandom.nextInt(channel.length)]; 4910 apChannel = convertFrequencyToChannelNumber(apChannel); 4911 } else { 4912 Log.e(TAG, "SoftAp do not get available channel list"); 4913 apChannel = 0; 4914 } 4915 } 4916 4917 if(DBG) { 4918 Log.d(TAG, "SoftAp set on channel " + apChannel); 4919 } 4920 4921 return apChannel; 4922 } 4923 4924 4925 /* Current design is to not set the config on a running hostapd but instead 4926 * stop and start tethering when user changes config on a running access point 4927 * 4928 * TODO: Add control channel setup through hostapd that allows changing config 4929 * on a running daemon 4930 */ 4931 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4932 // set channel 4933 final WifiConfiguration config = new WifiConfiguration(configuration); 4934 4935 if (DBG) { 4936 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4937 } 4938 //set country code through HAL Here 4939 if (mSetCountryCode != null) { 4940 if(!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 4941 if (config.apBand != 0) { 4942 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 4943 //countrycode is mandatory for 5GHz 4944 sendMessage(CMD_START_AP_FAILURE); 4945 return; 4946 } 4947 } 4948 } else { 4949 if (config.apBand != 0) { 4950 //countrycode is mandatory for 5GHz 4951 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 4952 sendMessage(CMD_START_AP_FAILURE); 4953 return; 4954 } 4955 } 4956 4957 if (config.apChannel == 0) { 4958 config.apChannel = chooseApChannel(config.apBand); 4959 if (config.apChannel == 0) { 4960 //fail to get available channel 4961 sendMessage(CMD_START_AP_FAILURE); 4962 return; 4963 } 4964 } 4965 //turn off interface 4966 if (!mWifiNative.toggleInterface(0)) { 4967 sendMessage(CMD_START_AP_FAILURE); 4968 return; 4969 } 4970 // Start hostapd on a separate thread 4971 new Thread(new Runnable() { 4972 public void run() { 4973 try { 4974 mNwService.startAccessPoint(config, mInterfaceName); 4975 } catch (Exception e) { 4976 loge("Exception in softap start " + e); 4977 try { 4978 mNwService.stopAccessPoint(mInterfaceName); 4979 mNwService.startAccessPoint(config, mInterfaceName); 4980 } catch (Exception e1) { 4981 loge("Exception in softap re-start " + e1); 4982 sendMessage(CMD_START_AP_FAILURE); 4983 return; 4984 } 4985 } 4986 if (DBG) log("Soft AP start successful"); 4987 sendMessage(CMD_START_AP_SUCCESS); 4988 } 4989 }).start(); 4990 } 4991 4992 /* 4993 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4994 * so as to record MAC address of default gateway. 4995 **/ 4996 private String macAddressFromRoute(String ipAddress) { 4997 String macAddress = null; 4998 BufferedReader reader = null; 4999 try { 5000 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5001 5002 // Skip over the line bearing colum titles 5003 String line = reader.readLine(); 5004 5005 while ((line = reader.readLine()) != null) { 5006 String[] tokens = line.split("[ ]+"); 5007 if (tokens.length < 6) { 5008 continue; 5009 } 5010 5011 // ARP column format is 5012 // Address HWType HWAddress Flags Mask IFace 5013 String ip = tokens[0]; 5014 String mac = tokens[3]; 5015 5016 if (ipAddress.equals(ip)) { 5017 macAddress = mac; 5018 break; 5019 } 5020 } 5021 5022 if (macAddress == null) { 5023 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5024 "/proc/net/arp"); 5025 } 5026 5027 } catch (FileNotFoundException e) { 5028 loge("Could not open /proc/net/arp to lookup mac address"); 5029 } catch (IOException e) { 5030 loge("Could not read /proc/net/arp to lookup mac address"); 5031 } finally { 5032 try { 5033 if (reader != null) { 5034 reader.close(); 5035 } 5036 } catch (IOException e) { 5037 // Do nothing 5038 } 5039 } 5040 return macAddress; 5041 5042 } 5043 5044 private class WifiNetworkFactory extends NetworkFactory { 5045 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5046 super(l, c, TAG, f); 5047 } 5048 5049 @Override 5050 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5051 ++mConnectionRequests; 5052 } 5053 5054 @Override 5055 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5056 --mConnectionRequests; 5057 } 5058 5059 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5060 pw.println("mConnectionRequests " + mConnectionRequests); 5061 } 5062 5063 } 5064 5065 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5066 private int mUntrustedReqCount; 5067 5068 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5069 super(l, c, tag, f); 5070 } 5071 5072 @Override 5073 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5074 if (!networkRequest.networkCapabilities.hasCapability( 5075 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5076 if (++mUntrustedReqCount == 1) { 5077 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5078 } 5079 } 5080 } 5081 5082 @Override 5083 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5084 if (!networkRequest.networkCapabilities.hasCapability( 5085 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5086 if (--mUntrustedReqCount == 0) { 5087 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5088 } 5089 } 5090 } 5091 5092 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5093 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5094 } 5095 } 5096 5097 void maybeRegisterNetworkFactory() { 5098 if (mNetworkFactory == null) { 5099 checkAndSetConnectivityInstance(); 5100 if (mCm != null) { 5101 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5102 NETWORKTYPE, mNetworkCapabilitiesFilter); 5103 mNetworkFactory.setScoreFilter(60); 5104 mNetworkFactory.register(); 5105 5106 // We can't filter untrusted network in the capabilities filter because a trusted 5107 // network would still satisfy a request that accepts untrusted ones. 5108 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5109 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5110 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5111 mUntrustedNetworkFactory.register(); 5112 } 5113 } 5114 } 5115 5116 /******************************************************** 5117 * HSM states 5118 *******************************************************/ 5119 5120 class DefaultState extends State { 5121 @Override 5122 public boolean processMessage(Message message) { 5123 logStateAndMessage(message, getClass().getSimpleName()); 5124 5125 switch (message.what) { 5126 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5127 AsyncChannel ac = (AsyncChannel) message.obj; 5128 if (ac == mWifiP2pChannel) { 5129 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5130 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5131 } else { 5132 loge("WifiP2pService connection failure, error=" + message.arg1); 5133 } 5134 } else { 5135 loge("got HALF_CONNECTED for unknown channel"); 5136 } 5137 break; 5138 } 5139 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5140 AsyncChannel ac = (AsyncChannel) message.obj; 5141 if (ac == mWifiP2pChannel) { 5142 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5143 //TODO: Re-establish connection to state machine after a delay 5144 // mWifiP2pChannel.connect(mContext, getHandler(), 5145 // mWifiP2pManager.getMessenger()); 5146 } 5147 break; 5148 } 5149 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5150 mBluetoothConnectionActive = (message.arg1 != 5151 BluetoothAdapter.STATE_DISCONNECTED); 5152 break; 5153 /* Synchronous call returns */ 5154 case CMD_PING_SUPPLICANT: 5155 case CMD_ENABLE_NETWORK: 5156 case CMD_ADD_OR_UPDATE_NETWORK: 5157 case CMD_REMOVE_NETWORK: 5158 case CMD_SAVE_CONFIG: 5159 replyToMessage(message, message.what, FAILURE); 5160 break; 5161 case CMD_GET_CAPABILITY_FREQ: 5162 replyToMessage(message, message.what, null); 5163 break; 5164 case CMD_GET_CONFIGURED_NETWORKS: 5165 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5166 break; 5167 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5168 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5169 break; 5170 case CMD_ENABLE_RSSI_POLL: 5171 mEnableRssiPolling = (message.arg1 == 1); 5172 break; 5173 case CMD_SET_HIGH_PERF_MODE: 5174 if (message.arg1 == 1) { 5175 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5176 } else { 5177 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5178 } 5179 break; 5180 case CMD_BOOT_COMPLETED: 5181 maybeRegisterNetworkFactory(); 5182 break; 5183 case CMD_SCREEN_STATE_CHANGED: 5184 handleScreenStateChanged(message.arg1 != 0); 5185 break; 5186 /* Discard */ 5187 case CMD_START_SCAN: 5188 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5189 break; 5190 case CMD_START_SUPPLICANT: 5191 case CMD_STOP_SUPPLICANT: 5192 case CMD_STOP_SUPPLICANT_FAILED: 5193 case CMD_START_DRIVER: 5194 case CMD_STOP_DRIVER: 5195 case CMD_DELAYED_STOP_DRIVER: 5196 case CMD_DRIVER_START_TIMED_OUT: 5197 case CMD_START_AP: 5198 case CMD_START_AP_SUCCESS: 5199 case CMD_START_AP_FAILURE: 5200 case CMD_STOP_AP: 5201 case CMD_TETHER_STATE_CHANGE: 5202 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5203 case CMD_DISCONNECT: 5204 case CMD_RECONNECT: 5205 case CMD_REASSOCIATE: 5206 case CMD_RELOAD_TLS_AND_RECONNECT: 5207 case WifiMonitor.SUP_CONNECTION_EVENT: 5208 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5209 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5210 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5211 case WifiMonitor.SCAN_RESULTS_EVENT: 5212 case WifiMonitor.SCAN_FAILED_EVENT: 5213 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5214 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5215 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5216 case WifiMonitor.WPS_OVERLAP_EVENT: 5217 case CMD_BLACKLIST_NETWORK: 5218 case CMD_CLEAR_BLACKLIST: 5219 case CMD_SET_OPERATIONAL_MODE: 5220 case CMD_SET_COUNTRY_CODE: 5221 case CMD_SET_FREQUENCY_BAND: 5222 case CMD_RSSI_POLL: 5223 case CMD_ENABLE_ALL_NETWORKS: 5224 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5225 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5226 /* Handled by WifiApConfigStore */ 5227 case CMD_SET_AP_CONFIG: 5228 case CMD_SET_AP_CONFIG_COMPLETED: 5229 case CMD_REQUEST_AP_CONFIG: 5230 case CMD_RESPONSE_AP_CONFIG: 5231 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5232 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5233 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5234 case CMD_DISABLE_P2P_RSP: 5235 case WifiMonitor.SUP_REQUEST_IDENTITY: 5236 case CMD_TEST_NETWORK_DISCONNECT: 5237 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5238 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5239 case CMD_TARGET_BSSID: 5240 case CMD_AUTO_CONNECT: 5241 case CMD_AUTO_ROAM: 5242 case CMD_AUTO_SAVE_NETWORK: 5243 case CMD_ASSOCIATED_BSSID: 5244 case CMD_UNWANTED_NETWORK: 5245 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5246 case CMD_ROAM_WATCHDOG_TIMER: 5247 case CMD_DISABLE_EPHEMERAL_NETWORK: 5248 case CMD_GET_MATCHING_CONFIG: 5249 case CMD_RESTART_AUTOJOIN_OFFLOAD: 5250 case CMD_STARTED_PNO_DBG: 5251 case CMD_STARTED_GSCAN_DBG: 5252 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 5253 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5254 break; 5255 case DhcpStateMachine.CMD_ON_QUIT: 5256 mDhcpStateMachine = null; 5257 break; 5258 case CMD_SET_SUSPEND_OPT_ENABLED: 5259 if (message.arg1 == 1) { 5260 mSuspendWakeLock.release(); 5261 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5262 } else { 5263 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5264 } 5265 break; 5266 case WifiMonitor.DRIVER_HUNG_EVENT: 5267 setSupplicantRunning(false); 5268 setSupplicantRunning(true); 5269 break; 5270 case WifiManager.CONNECT_NETWORK: 5271 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5272 WifiManager.BUSY); 5273 break; 5274 case WifiManager.FORGET_NETWORK: 5275 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5276 WifiManager.BUSY); 5277 break; 5278 case WifiManager.SAVE_NETWORK: 5279 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5280 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5281 WifiManager.BUSY); 5282 break; 5283 case WifiManager.START_WPS: 5284 replyToMessage(message, WifiManager.WPS_FAILED, 5285 WifiManager.BUSY); 5286 break; 5287 case WifiManager.CANCEL_WPS: 5288 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5289 WifiManager.BUSY); 5290 break; 5291 case WifiManager.DISABLE_NETWORK: 5292 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5293 WifiManager.BUSY); 5294 break; 5295 case WifiManager.RSSI_PKTCNT_FETCH: 5296 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5297 WifiManager.BUSY); 5298 break; 5299 case CMD_GET_SUPPORTED_FEATURES: 5300 int featureSet = WifiNative.getSupportedFeatureSet(); 5301 replyToMessage(message, message.what, featureSet); 5302 break; 5303 case CMD_FIRMWARE_ALERT: 5304 if (mWifiLogger != null) { 5305 byte[] buffer = (byte[])message.obj; 5306 mWifiLogger.captureAlertData(message.arg1, buffer); 5307 } 5308 break; 5309 case CMD_GET_LINK_LAYER_STATS: 5310 // Not supported hence reply with error message 5311 replyToMessage(message, message.what, null); 5312 break; 5313 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5314 NetworkInfo info = (NetworkInfo) message.obj; 5315 mP2pConnected.set(info.isConnected()); 5316 break; 5317 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5318 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5319 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5320 break; 5321 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5322 case CMD_UPDATE_LINKPROPERTIES: 5323 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5324 break; 5325 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5326 case CMD_IP_CONFIGURATION_LOST: 5327 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5328 break; 5329 case CMD_GET_CONNECTION_STATISTICS: 5330 replyToMessage(message, message.what, mWifiConnectionStatistics); 5331 break; 5332 default: 5333 loge("Error! unhandled message" + message); 5334 break; 5335 } 5336 return HANDLED; 5337 } 5338 } 5339 5340 class InitialState extends State { 5341 @Override 5342 public void enter() { 5343 WifiNative.stopHal(); 5344 mWifiNative.unloadDriver(); 5345 if (mWifiP2pChannel == null) { 5346 mWifiP2pChannel = new AsyncChannel(); 5347 mWifiP2pChannel.connect(mContext, getHandler(), 5348 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5349 } 5350 5351 if (mWifiApConfigChannel == null) { 5352 mWifiApConfigChannel = new AsyncChannel(); 5353 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5354 mContext, getHandler()); 5355 wifiApConfigStore.loadApConfiguration(); 5356 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5357 wifiApConfigStore.getMessenger()); 5358 } 5359 5360 if (mWifiConfigStore.enableHalBasedPno.get()) { 5361 // make sure developer Settings are in sync with the config option 5362 mHalBasedPnoEnableInDevSettings = true; 5363 } 5364 } 5365 @Override 5366 public boolean processMessage(Message message) { 5367 logStateAndMessage(message, getClass().getSimpleName()); 5368 switch (message.what) { 5369 case CMD_START_SUPPLICANT: 5370 if (mWifiNative.loadDriver()) { 5371 try { 5372 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5373 } catch (Exception e) { 5374 loge("Failed to reload STA firmware " + e); 5375 // Continue 5376 } 5377 5378 try { 5379 // A runtime crash can leave the interface up and 5380 // IP addresses configured, and this affects 5381 // connectivity when supplicant starts up. 5382 // Ensure interface is down and we have no IP 5383 // addresses before a supplicant start. 5384 mNwService.setInterfaceDown(mInterfaceName); 5385 mNwService.clearInterfaceAddresses(mInterfaceName); 5386 5387 // Set privacy extensions 5388 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5389 5390 // IPv6 is enabled only as long as access point is connected since: 5391 // - IPv6 addresses and routes stick around after disconnection 5392 // - kernel is unaware when connected and fails to start IPv6 negotiation 5393 // - kernel can start autoconfiguration when 802.1x is not complete 5394 mNwService.disableIpv6(mInterfaceName); 5395 } catch (RemoteException re) { 5396 loge("Unable to change interface settings: " + re); 5397 } catch (IllegalStateException ie) { 5398 loge("Unable to change interface settings: " + ie); 5399 } 5400 5401 /* Stop a running supplicant after a runtime restart 5402 * Avoids issues with drivers that do not handle interface down 5403 * on a running supplicant properly. 5404 */ 5405 mWifiMonitor.killSupplicant(mP2pSupported); 5406 5407 if (WifiNative.startHal() == false) { 5408 /* starting HAL is optional */ 5409 loge("Failed to start HAL"); 5410 } 5411 5412 if (mWifiNative.startSupplicant(mP2pSupported)) { 5413 setWifiState(WIFI_STATE_ENABLING); 5414 if (DBG) log("Supplicant start successful"); 5415 mWifiMonitor.startMonitoring(); 5416 transitionTo(mSupplicantStartingState); 5417 } else { 5418 loge("Failed to start supplicant!"); 5419 } 5420 } else { 5421 loge("Failed to load driver"); 5422 } 5423 break; 5424 case CMD_START_AP: 5425 if (mWifiNative.loadDriver() == false) { 5426 loge("Failed to load driver for softap"); 5427 } else { 5428 5429 if (WifiNative.startHal() == false) { 5430 /* starting HAL is optional */ 5431 loge("Failed to start HAL"); 5432 } 5433 5434 setWifiApState(WIFI_AP_STATE_ENABLING); 5435 transitionTo(mSoftApStartingState); 5436 } 5437 break; 5438 default: 5439 return NOT_HANDLED; 5440 } 5441 return HANDLED; 5442 } 5443 } 5444 5445 class SupplicantStartingState extends State { 5446 private void initializeWpsDetails() { 5447 String detail; 5448 detail = SystemProperties.get("ro.product.name", ""); 5449 if (!mWifiNative.setDeviceName(detail)) { 5450 loge("Failed to set device name " + detail); 5451 } 5452 detail = SystemProperties.get("ro.product.manufacturer", ""); 5453 if (!mWifiNative.setManufacturer(detail)) { 5454 loge("Failed to set manufacturer " + detail); 5455 } 5456 detail = SystemProperties.get("ro.product.model", ""); 5457 if (!mWifiNative.setModelName(detail)) { 5458 loge("Failed to set model name " + detail); 5459 } 5460 detail = SystemProperties.get("ro.product.model", ""); 5461 if (!mWifiNative.setModelNumber(detail)) { 5462 loge("Failed to set model number " + detail); 5463 } 5464 detail = SystemProperties.get("ro.serialno", ""); 5465 if (!mWifiNative.setSerialNumber(detail)) { 5466 loge("Failed to set serial number " + detail); 5467 } 5468 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5469 loge("Failed to set WPS config methods"); 5470 } 5471 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5472 loge("Failed to set primary device type " + mPrimaryDeviceType); 5473 } 5474 } 5475 5476 @Override 5477 public boolean processMessage(Message message) { 5478 logStateAndMessage(message, getClass().getSimpleName()); 5479 5480 switch(message.what) { 5481 case WifiMonitor.SUP_CONNECTION_EVENT: 5482 if (DBG) log("Supplicant connection established"); 5483 setWifiState(WIFI_STATE_ENABLED); 5484 mSupplicantRestartCount = 0; 5485 /* Reset the supplicant state to indicate the supplicant 5486 * state is not known at this time */ 5487 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5488 /* Initialize data structures */ 5489 mLastBssid = null; 5490 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5491 mLastSignalLevel = -1; 5492 5493 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5494 mWifiNative.enableSaveConfig(); 5495 mWifiConfigStore.loadAndEnableAllNetworks(); 5496 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5497 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5498 } 5499 initializeWpsDetails(); 5500 5501 sendSupplicantConnectionChangedBroadcast(true); 5502 transitionTo(mDriverStartedState); 5503 break; 5504 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5505 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5506 loge("Failed to setup control channel, restart supplicant"); 5507 mWifiMonitor.killSupplicant(mP2pSupported); 5508 transitionTo(mInitialState); 5509 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5510 } else { 5511 loge("Failed " + mSupplicantRestartCount + 5512 " times to start supplicant, unload driver"); 5513 mSupplicantRestartCount = 0; 5514 setWifiState(WIFI_STATE_UNKNOWN); 5515 transitionTo(mInitialState); 5516 } 5517 break; 5518 case CMD_START_SUPPLICANT: 5519 case CMD_STOP_SUPPLICANT: 5520 case CMD_START_AP: 5521 case CMD_STOP_AP: 5522 case CMD_START_DRIVER: 5523 case CMD_STOP_DRIVER: 5524 case CMD_SET_OPERATIONAL_MODE: 5525 case CMD_SET_COUNTRY_CODE: 5526 case CMD_SET_FREQUENCY_BAND: 5527 case CMD_START_PACKET_FILTERING: 5528 case CMD_STOP_PACKET_FILTERING: 5529 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5530 deferMessage(message); 5531 break; 5532 default: 5533 return NOT_HANDLED; 5534 } 5535 return HANDLED; 5536 } 5537 } 5538 5539 class SupplicantStartedState extends State { 5540 @Override 5541 public void enter() { 5542 /* Wifi is available as long as we have a connection to supplicant */ 5543 mNetworkInfo.setIsAvailable(true); 5544 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5545 5546 int defaultInterval = mContext.getResources().getInteger( 5547 R.integer.config_wifi_supplicant_scan_interval); 5548 5549 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5550 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5551 defaultInterval); 5552 5553 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5554 mWifiNative.setExternalSim(true); 5555 5556 /* turn on use of DFS channels */ 5557 WifiNative.setDfsFlag(true); 5558 5559 /* set country code */ 5560 setCountryCode(); 5561 5562 setRandomMacOui(); 5563 mWifiNative.enableAutoConnect(false); 5564 } 5565 5566 @Override 5567 public boolean processMessage(Message message) { 5568 logStateAndMessage(message, getClass().getSimpleName()); 5569 5570 switch(message.what) { 5571 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5572 if (mP2pSupported) { 5573 transitionTo(mWaitForP2pDisableState); 5574 } else { 5575 transitionTo(mSupplicantStoppingState); 5576 } 5577 break; 5578 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5579 loge("Connection lost, restart supplicant"); 5580 handleSupplicantConnectionLoss(true); 5581 handleNetworkDisconnect(); 5582 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5583 if (mP2pSupported) { 5584 transitionTo(mWaitForP2pDisableState); 5585 } else { 5586 transitionTo(mInitialState); 5587 } 5588 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5589 break; 5590 case WifiMonitor.SCAN_RESULTS_EVENT: 5591 case WifiMonitor.SCAN_FAILED_EVENT: 5592 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5593 closeRadioScanStats(); 5594 noteScanEnd(); 5595 setScanResults(); 5596 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5597 /* Just updated results from full scan, let apps know about this */ 5598 sendScanResultsAvailableBroadcast(); 5599 } 5600 mSendScanResultsBroadcast = false; 5601 mIsScanOngoing = false; 5602 mIsFullScanOngoing = false; 5603 if (mBufferedScanMsg.size() > 0) 5604 sendMessage(mBufferedScanMsg.remove()); 5605 break; 5606 case CMD_PING_SUPPLICANT: 5607 boolean ok = mWifiNative.ping(); 5608 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5609 break; 5610 case CMD_GET_CAPABILITY_FREQ: 5611 String freqs = mWifiNative.getFreqCapability(); 5612 replyToMessage(message, message.what, freqs); 5613 break; 5614 case CMD_START_AP: 5615 /* Cannot start soft AP while in client mode */ 5616 loge("Failed to start soft AP with a running supplicant"); 5617 setWifiApState(WIFI_AP_STATE_FAILED); 5618 break; 5619 case CMD_SET_OPERATIONAL_MODE: 5620 mOperationalMode = message.arg1; 5621 mWifiConfigStore. 5622 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5623 break; 5624 case CMD_TARGET_BSSID: 5625 // Trying to associate to this BSSID 5626 if (message.obj != null) { 5627 mTargetRoamBSSID = (String) message.obj; 5628 } 5629 break; 5630 case CMD_GET_LINK_LAYER_STATS: 5631 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5632 if (stats == null) { 5633 // When firmware doesnt support link layer stats, return an empty object 5634 stats = new WifiLinkLayerStats(); 5635 } 5636 replyToMessage(message, message.what, stats); 5637 break; 5638 case CMD_SET_COUNTRY_CODE: 5639 String country = (String) message.obj; 5640 5641 final boolean persist = (message.arg2 == 1); 5642 final int sequence = message.arg1; 5643 5644 if (sequence != mCountryCodeSequence.get()) { 5645 if (DBG) log("set country code ignored due to sequnce num"); 5646 break; 5647 } 5648 if (DBG) log("set country code " + country); 5649 country = country.toUpperCase(Locale.ROOT); 5650 5651 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5652 if (mWifiNative.setCountryCode(country)) { 5653 mDriverSetCountryCode = country; 5654 } else { 5655 loge("Failed to set country code " + country); 5656 } 5657 } 5658 5659 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5660 break; 5661 default: 5662 return NOT_HANDLED; 5663 } 5664 return HANDLED; 5665 } 5666 5667 @Override 5668 public void exit() { 5669 mNetworkInfo.setIsAvailable(false); 5670 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5671 } 5672 } 5673 5674 class SupplicantStoppingState extends State { 5675 @Override 5676 public void enter() { 5677 /* Send any reset commands to supplicant before shutting it down */ 5678 handleNetworkDisconnect(); 5679 if (mDhcpStateMachine != null) { 5680 mDhcpStateMachine.doQuit(); 5681 } 5682 5683 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5684 if (suppState == null) suppState = "unknown"; 5685 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5686 if (p2pSuppState == null) p2pSuppState = "unknown"; 5687 5688 loge("SupplicantStoppingState: stopSupplicant " 5689 + " init.svc.wpa_supplicant=" + suppState 5690 + " init.svc.p2p_supplicant=" + p2pSuppState); 5691 mWifiMonitor.stopSupplicant(); 5692 5693 /* Send ourselves a delayed message to indicate failure after a wait time */ 5694 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5695 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5696 setWifiState(WIFI_STATE_DISABLING); 5697 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5698 } 5699 @Override 5700 public boolean processMessage(Message message) { 5701 logStateAndMessage(message, getClass().getSimpleName()); 5702 5703 switch(message.what) { 5704 case WifiMonitor.SUP_CONNECTION_EVENT: 5705 loge("Supplicant connection received while stopping"); 5706 break; 5707 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5708 if (DBG) log("Supplicant connection lost"); 5709 handleSupplicantConnectionLoss(false); 5710 transitionTo(mInitialState); 5711 break; 5712 case CMD_STOP_SUPPLICANT_FAILED: 5713 if (message.arg1 == mSupplicantStopFailureToken) { 5714 loge("Timed out on a supplicant stop, kill and proceed"); 5715 handleSupplicantConnectionLoss(true); 5716 transitionTo(mInitialState); 5717 } 5718 break; 5719 case CMD_START_SUPPLICANT: 5720 case CMD_STOP_SUPPLICANT: 5721 case CMD_START_AP: 5722 case CMD_STOP_AP: 5723 case CMD_START_DRIVER: 5724 case CMD_STOP_DRIVER: 5725 case CMD_SET_OPERATIONAL_MODE: 5726 case CMD_SET_COUNTRY_CODE: 5727 case CMD_SET_FREQUENCY_BAND: 5728 case CMD_START_PACKET_FILTERING: 5729 case CMD_STOP_PACKET_FILTERING: 5730 deferMessage(message); 5731 break; 5732 default: 5733 return NOT_HANDLED; 5734 } 5735 return HANDLED; 5736 } 5737 } 5738 5739 class DriverStartingState extends State { 5740 private int mTries; 5741 @Override 5742 public void enter() { 5743 mTries = 1; 5744 /* Send ourselves a delayed message to start driver a second time */ 5745 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5746 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5747 } 5748 @Override 5749 public boolean processMessage(Message message) { 5750 logStateAndMessage(message, getClass().getSimpleName()); 5751 5752 switch(message.what) { 5753 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5754 SupplicantState state = handleSupplicantStateChange(message); 5755 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5756 * a state that indicates driver has started, it is ready to 5757 * receive driver commands 5758 */ 5759 if (SupplicantState.isDriverActive(state)) { 5760 transitionTo(mDriverStartedState); 5761 } 5762 break; 5763 case CMD_DRIVER_START_TIMED_OUT: 5764 if (message.arg1 == mDriverStartToken) { 5765 if (mTries >= 2) { 5766 loge("Failed to start driver after " + mTries); 5767 transitionTo(mDriverStoppedState); 5768 } else { 5769 loge("Driver start failed, retrying"); 5770 mWakeLock.acquire(); 5771 mWifiNative.startDriver(); 5772 mWakeLock.release(); 5773 5774 ++mTries; 5775 /* Send ourselves a delayed message to start driver again */ 5776 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5777 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5778 } 5779 } 5780 break; 5781 /* Queue driver commands & connection events */ 5782 case CMD_START_DRIVER: 5783 case CMD_STOP_DRIVER: 5784 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5785 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5786 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5787 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5788 case WifiMonitor.WPS_OVERLAP_EVENT: 5789 case CMD_SET_COUNTRY_CODE: 5790 case CMD_SET_FREQUENCY_BAND: 5791 case CMD_START_PACKET_FILTERING: 5792 case CMD_STOP_PACKET_FILTERING: 5793 case CMD_START_SCAN: 5794 case CMD_DISCONNECT: 5795 case CMD_REASSOCIATE: 5796 case CMD_RECONNECT: 5797 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5798 deferMessage(message); 5799 break; 5800 case WifiMonitor.SCAN_RESULTS_EVENT: 5801 case WifiMonitor.SCAN_FAILED_EVENT: 5802 // Loose scan results obtained in Driver Starting state, they can only confuse 5803 // the state machine 5804 break; 5805 default: 5806 return NOT_HANDLED; 5807 } 5808 return HANDLED; 5809 } 5810 } 5811 5812 class DriverStartedState extends State { 5813 @Override 5814 public void enter() { 5815 5816 if (PDBG) { 5817 loge("DriverStartedState enter"); 5818 } 5819 5820 mWifiLogger.startLogging(mVerboseLoggingLevel > 0); 5821 mIsRunning = true; 5822 mInDelayedStop = false; 5823 mDelayedStopCounter++; 5824 updateBatteryWorkSource(null); 5825 /** 5826 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5827 * When this mode is on, some of the low-level scan parameters used by the 5828 * driver are changed to reduce interference with bluetooth 5829 */ 5830 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5831 /* set frequency band of operation */ 5832 setFrequencyBand(); 5833 /* initialize network state */ 5834 setNetworkDetailedState(DetailedState.DISCONNECTED); 5835 5836 /* Remove any filtering on Multicast v6 at start */ 5837 mWifiNative.stopFilteringMulticastV6Packets(); 5838 5839 /* Reset Multicast v4 filtering state */ 5840 if (mFilteringMulticastV4Packets.get()) { 5841 mWifiNative.startFilteringMulticastV4Packets(); 5842 } else { 5843 mWifiNative.stopFilteringMulticastV4Packets(); 5844 } 5845 5846 mDhcpActive = false; 5847 5848 if (mOperationalMode != CONNECT_MODE) { 5849 mWifiNative.disconnect(); 5850 mWifiConfigStore.disableAllNetworks(); 5851 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5852 setWifiState(WIFI_STATE_DISABLED); 5853 } 5854 transitionTo(mScanModeState); 5855 } else { 5856 5857 // Status pulls in the current supplicant state and network connection state 5858 // events over the monitor connection. This helps framework sync up with 5859 // current supplicant state 5860 // TODO: actually check th supplicant status string and make sure the supplicant 5861 // is in disconnecte4d state. 5862 mWifiNative.status(); 5863 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5864 transitionTo(mDisconnectedState); 5865 transitionTo(mDisconnectedState); 5866 } 5867 5868 // We may have missed screen update at boot 5869 if (mScreenBroadcastReceived.get() == false) { 5870 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5871 Context.POWER_SERVICE); 5872 handleScreenStateChanged(powerManager.isScreenOn()); 5873 } else { 5874 // Set the right suspend mode settings 5875 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5876 && mUserWantsSuspendOpt.get()); 5877 } 5878 mWifiNative.setPowerSave(true); 5879 5880 if (mP2pSupported) { 5881 if (mOperationalMode == CONNECT_MODE) { 5882 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5883 } else { 5884 // P2P statemachine starts in disabled state, and is not enabled until 5885 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5886 // keep it disabled. 5887 } 5888 } 5889 5890 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5891 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5892 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5893 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5894 5895 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 5896 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 5897 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 5898 mHalBasedPnoDriverSupported = true; 5899 } 5900 5901 // Enable link layer stats gathering 5902 mWifiNative.setWifiLinkLayerStats("wlan0", 1); 5903 5904 if (PDBG) { 5905 loge("Driverstarted State enter done, epno=" + mHalBasedPnoDriverSupported 5906 + " feature=" + mHalFeatureSet); 5907 } 5908 } 5909 5910 @Override 5911 public boolean processMessage(Message message) { 5912 logStateAndMessage(message, getClass().getSimpleName()); 5913 5914 switch(message.what) { 5915 case CMD_START_SCAN: 5916 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5917 break; 5918 case CMD_SET_FREQUENCY_BAND: 5919 int band = message.arg1; 5920 if (DBG) log("set frequency band " + band); 5921 if (mWifiNative.setBand(band)) { 5922 5923 if (PDBG) loge("did set frequency band " + band); 5924 5925 mFrequencyBand.set(band); 5926 // Flush old data - like scan results 5927 mWifiNative.bssFlush(); 5928 // Fetch the latest scan results when frequency band is set 5929// startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5930 5931 if (PDBG) loge("done set frequency band " + band); 5932 5933 } else { 5934 loge("Failed to set frequency band " + band); 5935 } 5936 break; 5937 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5938 mBluetoothConnectionActive = (message.arg1 != 5939 BluetoothAdapter.STATE_DISCONNECTED); 5940 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5941 break; 5942 case CMD_STOP_DRIVER: 5943 int mode = message.arg1; 5944 5945 /* Already doing a delayed stop */ 5946 if (mInDelayedStop) { 5947 if (DBG) log("Already in delayed stop"); 5948 break; 5949 } 5950 /* disconnect right now, but leave the driver running for a bit */ 5951 mWifiConfigStore.disableAllNetworks(); 5952 5953 mInDelayedStop = true; 5954 mDelayedStopCounter++; 5955 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5956 5957 /* send regular delayed shut down */ 5958 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5959 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5960 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5961 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5962 DRIVER_STOP_REQUEST, driverStopIntent, 5963 PendingIntent.FLAG_UPDATE_CURRENT); 5964 5965 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5966 + mDriverStopDelayMs, mDriverStopIntent); 5967 break; 5968 case CMD_START_DRIVER: 5969 if (mInDelayedStop) { 5970 mInDelayedStop = false; 5971 mDelayedStopCounter++; 5972 mAlarmManager.cancel(mDriverStopIntent); 5973 if (DBG) log("Delayed stop ignored due to start"); 5974 if (mOperationalMode == CONNECT_MODE) { 5975 mWifiConfigStore.enableAllNetworks(); 5976 } 5977 } 5978 break; 5979 case CMD_DELAYED_STOP_DRIVER: 5980 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5981 if (message.arg1 != mDelayedStopCounter) break; 5982 if (getCurrentState() != mDisconnectedState) { 5983 mWifiNative.disconnect(); 5984 handleNetworkDisconnect(); 5985 } 5986 mWakeLock.acquire(); 5987 mWifiNative.stopDriver(); 5988 mWakeLock.release(); 5989 if (mP2pSupported) { 5990 transitionTo(mWaitForP2pDisableState); 5991 } else { 5992 transitionTo(mDriverStoppingState); 5993 } 5994 break; 5995 case CMD_START_PACKET_FILTERING: 5996 if (message.arg1 == MULTICAST_V6) { 5997 mWifiNative.startFilteringMulticastV6Packets(); 5998 } else if (message.arg1 == MULTICAST_V4) { 5999 mWifiNative.startFilteringMulticastV4Packets(); 6000 } else { 6001 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6002 } 6003 break; 6004 case CMD_STOP_PACKET_FILTERING: 6005 if (message.arg1 == MULTICAST_V6) { 6006 mWifiNative.stopFilteringMulticastV6Packets(); 6007 } else if (message.arg1 == MULTICAST_V4) { 6008 mWifiNative.stopFilteringMulticastV4Packets(); 6009 } else { 6010 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6011 } 6012 break; 6013 case CMD_SET_SUSPEND_OPT_ENABLED: 6014 if (message.arg1 == 1) { 6015 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6016 mSuspendWakeLock.release(); 6017 } else { 6018 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6019 } 6020 break; 6021 case CMD_SET_HIGH_PERF_MODE: 6022 if (message.arg1 == 1) { 6023 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6024 } else { 6025 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6026 } 6027 break; 6028 case CMD_ENABLE_TDLS: 6029 if (message.obj != null) { 6030 String remoteAddress = (String) message.obj; 6031 boolean enable = (message.arg1 == 1); 6032 mWifiNative.startTdls(remoteAddress, enable); 6033 } 6034 break; 6035 case WifiMonitor.ANQP_DONE_EVENT: 6036 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6037 break; 6038 default: 6039 return NOT_HANDLED; 6040 } 6041 return HANDLED; 6042 } 6043 @Override 6044 public void exit() { 6045 6046 mWifiLogger.stopLogging(); 6047 6048 mIsRunning = false; 6049 updateBatteryWorkSource(null); 6050 mScanResults = new ArrayList<>(); 6051 6052 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6053 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6054 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6055 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6056 noteScanEnd(); // wrap up any pending request. 6057 mBufferedScanMsg.clear(); 6058 } 6059 } 6060 6061 class WaitForP2pDisableState extends State { 6062 private State mTransitionToState; 6063 @Override 6064 public void enter() { 6065 switch (getCurrentMessage().what) { 6066 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6067 mTransitionToState = mInitialState; 6068 break; 6069 case CMD_DELAYED_STOP_DRIVER: 6070 mTransitionToState = mDriverStoppingState; 6071 break; 6072 case CMD_STOP_SUPPLICANT: 6073 mTransitionToState = mSupplicantStoppingState; 6074 break; 6075 default: 6076 mTransitionToState = mDriverStoppingState; 6077 break; 6078 } 6079 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6080 } 6081 @Override 6082 public boolean processMessage(Message message) { 6083 logStateAndMessage(message, getClass().getSimpleName()); 6084 6085 switch(message.what) { 6086 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6087 transitionTo(mTransitionToState); 6088 break; 6089 /* Defer wifi start/shut and driver commands */ 6090 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6091 case CMD_START_SUPPLICANT: 6092 case CMD_STOP_SUPPLICANT: 6093 case CMD_START_AP: 6094 case CMD_STOP_AP: 6095 case CMD_START_DRIVER: 6096 case CMD_STOP_DRIVER: 6097 case CMD_SET_OPERATIONAL_MODE: 6098 case CMD_SET_COUNTRY_CODE: 6099 case CMD_SET_FREQUENCY_BAND: 6100 case CMD_START_PACKET_FILTERING: 6101 case CMD_STOP_PACKET_FILTERING: 6102 case CMD_START_SCAN: 6103 case CMD_DISCONNECT: 6104 case CMD_REASSOCIATE: 6105 case CMD_RECONNECT: 6106 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6107 deferMessage(message); 6108 break; 6109 default: 6110 return NOT_HANDLED; 6111 } 6112 return HANDLED; 6113 } 6114 } 6115 6116 class DriverStoppingState extends State { 6117 @Override 6118 public boolean processMessage(Message message) { 6119 logStateAndMessage(message, getClass().getSimpleName()); 6120 6121 switch(message.what) { 6122 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6123 SupplicantState state = handleSupplicantStateChange(message); 6124 if (state == SupplicantState.INTERFACE_DISABLED) { 6125 transitionTo(mDriverStoppedState); 6126 } 6127 break; 6128 /* Queue driver commands */ 6129 case CMD_START_DRIVER: 6130 case CMD_STOP_DRIVER: 6131 case CMD_SET_COUNTRY_CODE: 6132 case CMD_SET_FREQUENCY_BAND: 6133 case CMD_START_PACKET_FILTERING: 6134 case CMD_STOP_PACKET_FILTERING: 6135 case CMD_START_SCAN: 6136 case CMD_DISCONNECT: 6137 case CMD_REASSOCIATE: 6138 case CMD_RECONNECT: 6139 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6140 deferMessage(message); 6141 break; 6142 default: 6143 return NOT_HANDLED; 6144 } 6145 return HANDLED; 6146 } 6147 } 6148 6149 class DriverStoppedState extends State { 6150 @Override 6151 public boolean processMessage(Message message) { 6152 logStateAndMessage(message, getClass().getSimpleName()); 6153 switch (message.what) { 6154 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6155 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6156 SupplicantState state = stateChangeResult.state; 6157 // A WEXT bug means that we can be back to driver started state 6158 // unexpectedly 6159 if (SupplicantState.isDriverActive(state)) { 6160 transitionTo(mDriverStartedState); 6161 } 6162 break; 6163 case CMD_START_DRIVER: 6164 mWakeLock.acquire(); 6165 mWifiNative.startDriver(); 6166 mWakeLock.release(); 6167 transitionTo(mDriverStartingState); 6168 break; 6169 default: 6170 return NOT_HANDLED; 6171 } 6172 return HANDLED; 6173 } 6174 } 6175 6176 class ScanModeState extends State { 6177 private int mLastOperationMode; 6178 @Override 6179 public void enter() { 6180 mLastOperationMode = mOperationalMode; 6181 } 6182 @Override 6183 public boolean processMessage(Message message) { 6184 logStateAndMessage(message, getClass().getSimpleName()); 6185 6186 switch(message.what) { 6187 case CMD_SET_OPERATIONAL_MODE: 6188 if (message.arg1 == CONNECT_MODE) { 6189 6190 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6191 setWifiState(WIFI_STATE_ENABLED); 6192 // Load and re-enable networks when going back to enabled state 6193 // This is essential for networks to show up after restore 6194 mWifiConfigStore.loadAndEnableAllNetworks(); 6195 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6196 } else { 6197 mWifiConfigStore.enableAllNetworks(); 6198 } 6199 6200 // Try autojoining with recent network already present in the cache 6201 // If none are found then trigger a scan which will trigger autojoin 6202 // upon reception of scan results event 6203 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6204 startScan(ENABLE_WIFI, 0, null, null); 6205 } 6206 6207 // Loose last selection choice since user toggled WiFi 6208 mWifiConfigStore. 6209 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6210 6211 mOperationalMode = CONNECT_MODE; 6212 transitionTo(mDisconnectedState); 6213 } else { 6214 // Nothing to do 6215 return HANDLED; 6216 } 6217 break; 6218 // Handle scan. All the connection related commands are 6219 // handled only in ConnectModeState 6220 case CMD_START_SCAN: 6221 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6222 break; 6223 default: 6224 return NOT_HANDLED; 6225 } 6226 return HANDLED; 6227 } 6228 } 6229 6230 6231 String smToString(Message message) { 6232 return smToString(message.what); 6233 } 6234 6235 String smToString(int what) { 6236 String s = "unknown"; 6237 switch (what) { 6238 case WifiMonitor.DRIVER_HUNG_EVENT: 6239 s = "DRIVER_HUNG_EVENT"; 6240 break; 6241 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6242 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6243 break; 6244 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6245 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6246 break; 6247 case CMD_SET_FREQUENCY_BAND: 6248 s = "CMD_SET_FREQUENCY_BAND"; 6249 break; 6250 case CMD_DELAYED_NETWORK_DISCONNECT: 6251 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6252 break; 6253 case CMD_TEST_NETWORK_DISCONNECT: 6254 s = "CMD_TEST_NETWORK_DISCONNECT"; 6255 break; 6256 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6257 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6258 break; 6259 case CMD_DISABLE_EPHEMERAL_NETWORK: 6260 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6261 break; 6262 case CMD_START_DRIVER: 6263 s = "CMD_START_DRIVER"; 6264 break; 6265 case CMD_STOP_DRIVER: 6266 s = "CMD_STOP_DRIVER"; 6267 break; 6268 case CMD_STOP_SUPPLICANT: 6269 s = "CMD_STOP_SUPPLICANT"; 6270 break; 6271 case CMD_STOP_SUPPLICANT_FAILED: 6272 s = "CMD_STOP_SUPPLICANT_FAILED"; 6273 break; 6274 case CMD_START_SUPPLICANT: 6275 s = "CMD_START_SUPPLICANT"; 6276 break; 6277 case CMD_REQUEST_AP_CONFIG: 6278 s = "CMD_REQUEST_AP_CONFIG"; 6279 break; 6280 case CMD_RESPONSE_AP_CONFIG: 6281 s = "CMD_RESPONSE_AP_CONFIG"; 6282 break; 6283 case CMD_TETHER_STATE_CHANGE: 6284 s = "CMD_TETHER_STATE_CHANGE"; 6285 break; 6286 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6287 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6288 break; 6289 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6290 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6291 break; 6292 case CMD_ADD_OR_UPDATE_NETWORK: 6293 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6294 break; 6295 case CMD_REMOVE_NETWORK: 6296 s = "CMD_REMOVE_NETWORK"; 6297 break; 6298 case CMD_ENABLE_NETWORK: 6299 s = "CMD_ENABLE_NETWORK"; 6300 break; 6301 case CMD_ENABLE_ALL_NETWORKS: 6302 s = "CMD_ENABLE_ALL_NETWORKS"; 6303 break; 6304 case CMD_AUTO_CONNECT: 6305 s = "CMD_AUTO_CONNECT"; 6306 break; 6307 case CMD_AUTO_ROAM: 6308 s = "CMD_AUTO_ROAM"; 6309 break; 6310 case CMD_AUTO_SAVE_NETWORK: 6311 s = "CMD_AUTO_SAVE_NETWORK"; 6312 break; 6313 case CMD_BOOT_COMPLETED: 6314 s = "CMD_BOOT_COMPLETED"; 6315 break; 6316 case DhcpStateMachine.CMD_START_DHCP: 6317 s = "CMD_START_DHCP"; 6318 break; 6319 case DhcpStateMachine.CMD_STOP_DHCP: 6320 s = "CMD_STOP_DHCP"; 6321 break; 6322 case DhcpStateMachine.CMD_RENEW_DHCP: 6323 s = "CMD_RENEW_DHCP"; 6324 break; 6325 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6326 s = "CMD_PRE_DHCP_ACTION"; 6327 break; 6328 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6329 s = "CMD_POST_DHCP_ACTION"; 6330 break; 6331 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6332 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6333 break; 6334 case DhcpStateMachine.CMD_ON_QUIT: 6335 s = "CMD_ON_QUIT"; 6336 break; 6337 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6338 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6339 break; 6340 case WifiManager.DISABLE_NETWORK: 6341 s = "WifiManager.DISABLE_NETWORK"; 6342 break; 6343 case CMD_BLACKLIST_NETWORK: 6344 s = "CMD_BLACKLIST_NETWORK"; 6345 break; 6346 case CMD_CLEAR_BLACKLIST: 6347 s = "CMD_CLEAR_BLACKLIST"; 6348 break; 6349 case CMD_SAVE_CONFIG: 6350 s = "CMD_SAVE_CONFIG"; 6351 break; 6352 case CMD_GET_CONFIGURED_NETWORKS: 6353 s = "CMD_GET_CONFIGURED_NETWORKS"; 6354 break; 6355 case CMD_GET_SUPPORTED_FEATURES: 6356 s = "CMD_GET_SUPPORTED_FEATURES"; 6357 break; 6358 case CMD_UNWANTED_NETWORK: 6359 s = "CMD_UNWANTED_NETWORK"; 6360 break; 6361 case CMD_NETWORK_STATUS: 6362 s = "CMD_NETWORK_STATUS"; 6363 break; 6364 case CMD_GET_LINK_LAYER_STATS: 6365 s = "CMD_GET_LINK_LAYER_STATS"; 6366 break; 6367 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6368 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6369 break; 6370 case CMD_DISCONNECT: 6371 s = "CMD_DISCONNECT"; 6372 break; 6373 case CMD_RECONNECT: 6374 s = "CMD_RECONNECT"; 6375 break; 6376 case CMD_REASSOCIATE: 6377 s = "CMD_REASSOCIATE"; 6378 break; 6379 case CMD_GET_CONNECTION_STATISTICS: 6380 s = "CMD_GET_CONNECTION_STATISTICS"; 6381 break; 6382 case CMD_SET_HIGH_PERF_MODE: 6383 s = "CMD_SET_HIGH_PERF_MODE"; 6384 break; 6385 case CMD_SET_COUNTRY_CODE: 6386 s = "CMD_SET_COUNTRY_CODE"; 6387 break; 6388 case CMD_ENABLE_RSSI_POLL: 6389 s = "CMD_ENABLE_RSSI_POLL"; 6390 break; 6391 case CMD_RSSI_POLL: 6392 s = "CMD_RSSI_POLL"; 6393 break; 6394 case CMD_START_PACKET_FILTERING: 6395 s = "CMD_START_PACKET_FILTERING"; 6396 break; 6397 case CMD_STOP_PACKET_FILTERING: 6398 s = "CMD_STOP_PACKET_FILTERING"; 6399 break; 6400 case CMD_SET_SUSPEND_OPT_ENABLED: 6401 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6402 break; 6403 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6404 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6405 break; 6406 case CMD_UPDATE_LINKPROPERTIES: 6407 s = "CMD_UPDATE_LINKPROPERTIES"; 6408 break; 6409 case CMD_RELOAD_TLS_AND_RECONNECT: 6410 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6411 break; 6412 case WifiManager.CONNECT_NETWORK: 6413 s = "CONNECT_NETWORK"; 6414 break; 6415 case WifiManager.SAVE_NETWORK: 6416 s = "SAVE_NETWORK"; 6417 break; 6418 case WifiManager.FORGET_NETWORK: 6419 s = "FORGET_NETWORK"; 6420 break; 6421 case WifiMonitor.SUP_CONNECTION_EVENT: 6422 s = "SUP_CONNECTION_EVENT"; 6423 break; 6424 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6425 s = "SUP_DISCONNECTION_EVENT"; 6426 break; 6427 case WifiMonitor.SCAN_RESULTS_EVENT: 6428 s = "SCAN_RESULTS_EVENT"; 6429 break; 6430 case WifiMonitor.SCAN_FAILED_EVENT: 6431 s = "SCAN_FAILED_EVENT"; 6432 break; 6433 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6434 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6435 break; 6436 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6437 s = "AUTHENTICATION_FAILURE_EVENT"; 6438 break; 6439 case WifiMonitor.SSID_TEMP_DISABLED: 6440 s = "SSID_TEMP_DISABLED"; 6441 break; 6442 case WifiMonitor.SSID_REENABLED: 6443 s = "SSID_REENABLED"; 6444 break; 6445 case WifiMonitor.WPS_SUCCESS_EVENT: 6446 s = "WPS_SUCCESS_EVENT"; 6447 break; 6448 case WifiMonitor.WPS_FAIL_EVENT: 6449 s = "WPS_FAIL_EVENT"; 6450 break; 6451 case WifiMonitor.SUP_REQUEST_IDENTITY: 6452 s = "SUP_REQUEST_IDENTITY"; 6453 break; 6454 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6455 s = "NETWORK_CONNECTION_EVENT"; 6456 break; 6457 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6458 s = "NETWORK_DISCONNECTION_EVENT"; 6459 break; 6460 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6461 s = "ASSOCIATION_REJECTION_EVENT"; 6462 break; 6463 case CMD_SET_OPERATIONAL_MODE: 6464 s = "CMD_SET_OPERATIONAL_MODE"; 6465 break; 6466 case CMD_START_SCAN: 6467 s = "CMD_START_SCAN"; 6468 break; 6469 case CMD_DISABLE_P2P_RSP: 6470 s = "CMD_DISABLE_P2P_RSP"; 6471 break; 6472 case CMD_DISABLE_P2P_REQ: 6473 s = "CMD_DISABLE_P2P_REQ"; 6474 break; 6475 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6476 s = "GOOD_LINK_DETECTED"; 6477 break; 6478 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6479 s = "POOR_LINK_DETECTED"; 6480 break; 6481 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6482 s = "GROUP_CREATING_TIMED_OUT"; 6483 break; 6484 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6485 s = "P2P_CONNECTION_CHANGED"; 6486 break; 6487 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6488 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6489 break; 6490 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6491 s = "P2P.SET_MIRACAST_MODE"; 6492 break; 6493 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6494 s = "P2P.BLOCK_DISCOVERY"; 6495 break; 6496 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6497 s = "P2P.SET_COUNTRY_CODE"; 6498 break; 6499 case WifiManager.CANCEL_WPS: 6500 s = "CANCEL_WPS"; 6501 break; 6502 case WifiManager.CANCEL_WPS_FAILED: 6503 s = "CANCEL_WPS_FAILED"; 6504 break; 6505 case WifiManager.CANCEL_WPS_SUCCEDED: 6506 s = "CANCEL_WPS_SUCCEDED"; 6507 break; 6508 case WifiManager.START_WPS: 6509 s = "START_WPS"; 6510 break; 6511 case WifiManager.START_WPS_SUCCEEDED: 6512 s = "START_WPS_SUCCEEDED"; 6513 break; 6514 case WifiManager.WPS_FAILED: 6515 s = "WPS_FAILED"; 6516 break; 6517 case WifiManager.WPS_COMPLETED: 6518 s = "WPS_COMPLETED"; 6519 break; 6520 case WifiManager.RSSI_PKTCNT_FETCH: 6521 s = "RSSI_PKTCNT_FETCH"; 6522 break; 6523 case CMD_IP_CONFIGURATION_LOST: 6524 s = "CMD_IP_CONFIGURATION_LOST"; 6525 break; 6526 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6527 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6528 break; 6529 case CMD_STATIC_IP_SUCCESS: 6530 s = "CMD_STATIC_IP_SUCCESSFUL"; 6531 break; 6532 case CMD_STATIC_IP_FAILURE: 6533 s = "CMD_STATIC_IP_FAILURE"; 6534 break; 6535 case DhcpStateMachine.DHCP_SUCCESS: 6536 s = "DHCP_SUCCESS"; 6537 break; 6538 case DhcpStateMachine.DHCP_FAILURE: 6539 s = "DHCP_FAILURE"; 6540 break; 6541 case CMD_TARGET_BSSID: 6542 s = "CMD_TARGET_BSSID"; 6543 break; 6544 case CMD_ASSOCIATED_BSSID: 6545 s = "CMD_ASSOCIATED_BSSID"; 6546 break; 6547 case CMD_ROAM_WATCHDOG_TIMER: 6548 s = "CMD_ROAM_WATCHDOG_TIMER"; 6549 break; 6550 case CMD_SCREEN_STATE_CHANGED: 6551 s = "CMD_SCREEN_STATE_CHANGED"; 6552 break; 6553 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6554 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6555 break; 6556 case CMD_RESTART_AUTOJOIN_OFFLOAD: 6557 s = "CMD_RESTART_AUTOJOIN_OFFLOAD"; 6558 break; 6559 case CMD_STARTED_PNO_DBG: 6560 s = "CMD_STARTED_PNO_DBG"; 6561 break; 6562 case CMD_STARTED_GSCAN_DBG: 6563 s = "CMD_STARTED_GSCAN_DBG"; 6564 break; 6565 case CMD_PNO_NETWORK_FOUND: 6566 s = "CMD_PNO_NETWORK_FOUND"; 6567 break; 6568 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 6569 s = "CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION"; 6570 break; 6571 default: 6572 s = "what:" + Integer.toString(what); 6573 break; 6574 } 6575 return s; 6576 } 6577 6578 void registerConnected() { 6579 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6580 long now_ms = System.currentTimeMillis(); 6581 // We are switching away from this configuration, 6582 // hence record the time we were connected last 6583 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6584 if (config != null) { 6585 config.lastConnected = System.currentTimeMillis(); 6586 config.autoJoinBailedDueToLowRssi = false; 6587 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6588 config.numConnectionFailures = 0; 6589 config.numIpConfigFailures = 0; 6590 config.numAuthFailures = 0; 6591 config.numAssociation++; 6592 } 6593 mBadLinkspeedcount = 0; 6594 } 6595 } 6596 6597 void registerDisconnected() { 6598 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6599 long now_ms = System.currentTimeMillis(); 6600 // We are switching away from this configuration, 6601 // hence record the time we were connected last 6602 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6603 if (config != null) { 6604 config.lastDisconnected = System.currentTimeMillis(); 6605 if (config.ephemeral) { 6606 // Remove ephemeral WifiConfigurations from file 6607 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6608 } 6609 } 6610 } 6611 } 6612 6613 void noteWifiDisabledWhileAssociated() { 6614 // We got disabled by user while we were associated, make note of it 6615 int rssi = mWifiInfo.getRssi(); 6616 WifiConfiguration config = getCurrentWifiConfiguration(); 6617 if (getCurrentState() == mConnectedState 6618 && rssi != WifiInfo.INVALID_RSSI 6619 && config != null) { 6620 boolean is24GHz = mWifiInfo.is24GHz(); 6621 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6622 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6623 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6624 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6625 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6626 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6627 if (isBadRSSI) { 6628 // Take note that we got disabled while RSSI was Bad 6629 config.numUserTriggeredWifiDisableLowRSSI++; 6630 } else if (isLowRSSI) { 6631 // Take note that we got disabled while RSSI was Low 6632 config.numUserTriggeredWifiDisableBadRSSI++; 6633 } else if (!isHighRSSI) { 6634 // Take note that we got disabled while RSSI was Not high 6635 config.numUserTriggeredWifiDisableNotHighRSSI++; 6636 } 6637 } 6638 } 6639 6640 WifiConfiguration getCurrentWifiConfiguration() { 6641 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6642 return null; 6643 } 6644 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6645 } 6646 6647 ScanResult getCurrentScanResult() { 6648 WifiConfiguration config = getCurrentWifiConfiguration(); 6649 if (config == null) { 6650 return null; 6651 } 6652 String BSSID = mWifiInfo.getBSSID(); 6653 if (BSSID == null) { 6654 BSSID = mTargetRoamBSSID; 6655 } 6656 ScanDetailCache scanDetailCache = 6657 mWifiConfigStore.getScanDetailCache(config); 6658 6659 if (scanDetailCache == null) { 6660 return null; 6661 } 6662 6663 return scanDetailCache.get(BSSID); 6664 } 6665 6666 String getCurrentBSSID() { 6667 if (linkDebouncing) { 6668 return null; 6669 } 6670 return mLastBssid; 6671 } 6672 6673 class ConnectModeState extends State { 6674 6675 @Override 6676 public void enter() { 6677 connectScanningService(); 6678 } 6679 6680 @Override 6681 public boolean processMessage(Message message) { 6682 WifiConfiguration config; 6683 int netId; 6684 boolean ok; 6685 boolean didDisconnect; 6686 String bssid; 6687 String ssid; 6688 NetworkUpdateResult result; 6689 logStateAndMessage(message, getClass().getSimpleName()); 6690 6691 switch (message.what) { 6692 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6693 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_ASSOC_FAILURE); 6694 didBlackListBSSID = false; 6695 bssid = (String) message.obj; 6696 if (bssid == null || TextUtils.isEmpty(bssid)) { 6697 // If BSSID is null, use the target roam BSSID 6698 bssid = mTargetRoamBSSID; 6699 } 6700 if (bssid != null) { 6701 // If we have a BSSID, tell configStore to black list it 6702 synchronized(mScanResultCache) { 6703 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6704 (mLastNetworkId, bssid, false); 6705 } 6706 } 6707 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6708 break; 6709 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6710 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTH_FAILURE); 6711 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6712 break; 6713 case WifiMonitor.SSID_TEMP_DISABLED: 6714 case WifiMonitor.SSID_REENABLED: 6715 String substr = (String) message.obj; 6716 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6717 "temp-disabled" : "re-enabled"; 6718 loge("ConnectModeState SSID state=" + en + " nid=" 6719 + Integer.toString(message.arg1) + " [" + substr + "]"); 6720 synchronized(mScanResultCache) { 6721 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6722 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6723 } 6724 break; 6725 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6726 SupplicantState state = handleSupplicantStateChange(message); 6727 // A driver/firmware hang can now put the interface in a down state. 6728 // We detect the interface going down and recover from it 6729 if (!SupplicantState.isDriverActive(state)) { 6730 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6731 handleNetworkDisconnect(); 6732 } 6733 log("Detected an interface down, restart driver"); 6734 transitionTo(mDriverStoppedState); 6735 sendMessage(CMD_START_DRIVER); 6736 break; 6737 } 6738 6739 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6740 // when authentication times out after a successful connection, 6741 // we can figure this from the supplicant state. If supplicant 6742 // state is DISCONNECTED, but the mNetworkInfo says we are not 6743 // disconnected, we need to handle a disconnection 6744 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6745 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6746 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6747 handleNetworkDisconnect(); 6748 transitionTo(mDisconnectedState); 6749 } 6750 break; 6751 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6752 if (message.arg1 == 1) { 6753 mWifiNative.disconnect(); 6754 mTemporarilyDisconnectWifi = true; 6755 } else { 6756 mWifiNative.reconnect(); 6757 mTemporarilyDisconnectWifi = false; 6758 } 6759 break; 6760 case CMD_ADD_OR_UPDATE_NETWORK: 6761 config = (WifiConfiguration) message.obj; 6762 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6763 if (res < 0) { 6764 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6765 } else { 6766 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6767 if (curConfig != null && config != null) { 6768 if (curConfig.priority < config.priority 6769 && config.status == WifiConfiguration.Status.ENABLED) { 6770 // Interpret this as a connect attempt 6771 // Set the last selected configuration so as to allow the system to 6772 // stick the last user choice without persisting the choice 6773 mWifiConfigStore.setLastSelectedConfiguration(res); 6774 6775 // Remember time of last connection attempt 6776 lastConnectAttempt = System.currentTimeMillis(); 6777 6778 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6779 6780 // As a courtesy to the caller, trigger a scan now 6781 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6782 } 6783 } 6784 } 6785 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6786 break; 6787 case CMD_REMOVE_NETWORK: 6788 ok = mWifiConfigStore.removeNetwork(message.arg1); 6789 if (!ok) { 6790 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6791 } 6792 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6793 break; 6794 case CMD_ENABLE_NETWORK: 6795 boolean others = message.arg2 == 1; 6796 // Tell autojoin the user did try to select to that network 6797 // However, do NOT persist the choice by bumping the priority of the network 6798 if (others) { 6799 mWifiAutoJoinController. 6800 updateConfigurationHistory(message.arg1, true, false); 6801 // Set the last selected configuration so as to allow the system to 6802 // stick the last user choice without persisting the choice 6803 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6804 6805 // Remember time of last connection attempt 6806 lastConnectAttempt = System.currentTimeMillis(); 6807 6808 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6809 } 6810 // Cancel auto roam requests 6811 autoRoamSetBSSID(message.arg1, "any"); 6812 6813 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6814 if (!ok) { 6815 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6816 } 6817 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6818 break; 6819 case CMD_ENABLE_ALL_NETWORKS: 6820 long time = android.os.SystemClock.elapsedRealtime(); 6821 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6822 mWifiConfigStore.enableAllNetworks(); 6823 mLastEnableAllNetworksTime = time; 6824 } 6825 break; 6826 case WifiManager.DISABLE_NETWORK: 6827 if (mWifiConfigStore.disableNetwork(message.arg1, 6828 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6829 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6830 } else { 6831 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6832 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6833 WifiManager.ERROR); 6834 } 6835 break; 6836 case CMD_DISABLE_EPHEMERAL_NETWORK: 6837 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6838 if (config != null) { 6839 if (config.networkId == mLastNetworkId) { 6840 // Disconnect and let autojoin reselect a new network 6841 sendMessage(CMD_DISCONNECT); 6842 } 6843 } 6844 break; 6845 case CMD_BLACKLIST_NETWORK: 6846 mWifiConfigStore.blackListBssid((String) message.obj); 6847 break; 6848 case CMD_CLEAR_BLACKLIST: 6849 mWifiConfigStore.clearBssidBlacklist(); 6850 break; 6851 case CMD_SAVE_CONFIG: 6852 ok = mWifiConfigStore.saveConfig(); 6853 6854 if (DBG) loge("wifistatemachine did save config " + ok); 6855 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6856 6857 // Inform the backup manager about a data change 6858 IBackupManager ibm = IBackupManager.Stub.asInterface( 6859 ServiceManager.getService(Context.BACKUP_SERVICE)); 6860 if (ibm != null) { 6861 try { 6862 ibm.dataChanged("com.android.providers.settings"); 6863 } catch (Exception e) { 6864 // Try again later 6865 } 6866 } 6867 break; 6868 case CMD_GET_CONFIGURED_NETWORKS: 6869 replyToMessage(message, message.what, 6870 mWifiConfigStore.getConfiguredNetworks()); 6871 break; 6872 case WifiMonitor.SUP_REQUEST_IDENTITY: 6873 int networkId = message.arg2; 6874 boolean identitySent = false; 6875 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 6876 6877 if (targetWificonfiguration != null 6878 && targetWificonfiguration.enterpriseConfig != null) { 6879 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 6880 } 6881 6882 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 6883 if (targetWificonfiguration != null 6884 && targetWificonfiguration.networkId == networkId 6885 && targetWificonfiguration.allowedKeyManagement 6886 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 6887 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 6888 || eapMethod == WifiEnterpriseConfig.Eap.AKA 6889 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 6890 TelephonyManager tm = (TelephonyManager) 6891 mContext.getSystemService(Context.TELEPHONY_SERVICE); 6892 if (tm != null) { 6893 String imsi = tm.getSubscriberId(); 6894 String mccMnc = ""; 6895 6896 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 6897 mccMnc = tm.getSimOperator(); 6898 6899 String identity = buildIdentity(eapMethod, imsi, mccMnc); 6900 6901 if (!identity.isEmpty()) { 6902 mWifiNative.simIdentityResponse(networkId, identity); 6903 identitySent = true; 6904 } 6905 } 6906 } 6907 if (!identitySent) { 6908 // Supplicant lacks credentials to connect to that network, hence black list 6909 ssid = (String) message.obj; 6910 if (targetWificonfiguration != null && ssid != null 6911 && targetWificonfiguration.SSID != null 6912 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6913 mWifiConfigStore.handleSSIDStateChange( 6914 targetWificonfiguration.networkId, false, 6915 "AUTH_FAILED no identity", null); 6916 } 6917 // Disconnect now, as we don't have any way to fullfill 6918 // the supplicant request. 6919 mWifiConfigStore.setLastSelectedConfiguration( 6920 WifiConfiguration.INVALID_NETWORK_ID); 6921 mWifiNative.disconnect(); 6922 } 6923 break; 6924 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6925 logd("Received SUP_REQUEST_SIM_AUTH"); 6926 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6927 if (requestData != null) { 6928 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6929 handleGsmAuthRequest(requestData); 6930 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 6931 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 6932 handle3GAuthRequest(requestData); 6933 } 6934 } else { 6935 loge("Invalid sim auth request"); 6936 } 6937 break; 6938 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6939 replyToMessage(message, message.what, 6940 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6941 break; 6942 case CMD_GET_MATCHING_CONFIG: 6943 replyToMessage(message, message.what, 6944 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 6945 break; 6946 /* Do a redundant disconnect without transition */ 6947 case CMD_DISCONNECT: 6948 mWifiConfigStore.setLastSelectedConfiguration 6949 (WifiConfiguration.INVALID_NETWORK_ID); 6950 mWifiNative.disconnect(); 6951 break; 6952 case CMD_RECONNECT: 6953 mWifiAutoJoinController.attemptAutoJoin(); 6954 break; 6955 case CMD_REASSOCIATE: 6956 lastConnectAttempt = System.currentTimeMillis(); 6957 mWifiNative.reassociate(); 6958 break; 6959 case CMD_RELOAD_TLS_AND_RECONNECT: 6960 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6961 logd("Reconnecting to give a chance to un-connected TLS networks"); 6962 mWifiNative.disconnect(); 6963 lastConnectAttempt = System.currentTimeMillis(); 6964 mWifiNative.reconnect(); 6965 } 6966 break; 6967 case CMD_AUTO_ROAM: 6968 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6969 return HANDLED; 6970 case CMD_AUTO_CONNECT: 6971 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6972 * associated status to the STATUS command but somehow-someplace still thinks 6973 * it is associated and thus will ignore select/reconnect command with 6974 * following message: 6975 * "Already associated with the selected network - do nothing" 6976 * 6977 * Hence, sends a disconnect to supplicant first. 6978 */ 6979 didDisconnect = false; 6980 if (getCurrentState() != mDisconnectedState) { 6981 /** Supplicant will ignore the reconnect if we are currently associated, 6982 * hence trigger a disconnect 6983 */ 6984 didDisconnect = true; 6985 mWifiNative.disconnect(); 6986 } 6987 6988 /* connect command coming from auto-join */ 6989 config = (WifiConfiguration) message.obj; 6990 netId = message.arg1; 6991 int roam = message.arg2; 6992 loge("CMD_AUTO_CONNECT sup state " 6993 + mSupplicantStateTracker.getSupplicantStateName() 6994 + " my state " + getCurrentState().getName() 6995 + " nid=" + Integer.toString(netId) 6996 + " roam=" + Integer.toString(roam)); 6997 if (config == null) { 6998 loge("AUTO_CONNECT and no config, bail out..."); 6999 break; 7000 } 7001 7002 /* Make sure we cancel any previous roam request */ 7003 autoRoamSetBSSID(netId, config.BSSID); 7004 7005 /* Save the network config */ 7006 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 7007 + " nid=" + Integer.toString(netId)); 7008 result = mWifiConfigStore.saveNetwork(config, -1); 7009 netId = result.getNetworkId(); 7010 loge("CMD_AUTO_CONNECT did save config -> " 7011 + " nid=" + Integer.toString(netId)); 7012 7013 // Make sure the network is enabled, since supplicant will not reenable it 7014 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7015 7016 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 7017 mWifiNative.reconnect()) { 7018 lastConnectAttempt = System.currentTimeMillis(); 7019 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7020 config = mWifiConfigStore.getWifiConfiguration(netId); 7021 if (config != null 7022 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7023 // If we autojoined a different config than the user selected one, 7024 // it means we could not see the last user selection, 7025 // or that the last user selection was faulty and ended up blacklisted 7026 // for some reason (in which case the user is notified with an error 7027 // message in the Wifi picker), and thus we managed to auto-join away 7028 // from the selected config. -> in that case we need to forget 7029 // the selection because we don't want to abruptly switch back to it. 7030 // 7031 // Note that the user selection is also forgotten after a period of time 7032 // during which the device has been disconnected. 7033 // The default value is 30 minutes : see the code path at bottom of 7034 // setScanResults() function. 7035 mWifiConfigStore. 7036 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7037 } 7038 mAutoRoaming = roam; 7039 if (isRoaming() || linkDebouncing) { 7040 transitionTo(mRoamingState); 7041 } else if (didDisconnect) { 7042 transitionTo(mDisconnectingState); 7043 } else { 7044 /* Already in disconnected state, nothing to change */ 7045 } 7046 } else { 7047 loge("Failed to connect config: " + config + " netId: " + netId); 7048 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7049 WifiManager.ERROR); 7050 break; 7051 } 7052 break; 7053 case WifiManager.CONNECT_NETWORK: 7054 /** 7055 * The connect message can contain a network id passed as arg1 on message or 7056 * or a config passed as obj on message. 7057 * For a new network, a config is passed to create and connect. 7058 * For an existing network, a network id is passed 7059 */ 7060 netId = message.arg1; 7061 config = (WifiConfiguration) message.obj; 7062 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7063 boolean updatedExisting = false; 7064 7065 /* Save the network config */ 7066 if (config != null) { 7067 String configKey = config.configKey(true /* allowCached */); 7068 WifiConfiguration savedConfig = 7069 mWifiConfigStore.getWifiConfiguration(configKey); 7070 if (savedConfig != null) { 7071 // There is an existing config with this netId, but it wasn't exposed 7072 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7073 // getConfiguredNetworks). Remove those bits and update the config. 7074 config = savedConfig; 7075 loge("CONNECT_NETWORK updating existing config with id=" + 7076 config.networkId + " configKey=" + configKey); 7077 config.ephemeral = false; 7078 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7079 updatedExisting = true; 7080 } 7081 7082 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7083 netId = result.getNetworkId(); 7084 } 7085 config = mWifiConfigStore.getWifiConfiguration(netId); 7086 7087 if (config == null) { 7088 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7089 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7090 + getCurrentState().getName()); 7091 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7092 WifiManager.ERROR); 7093 break; 7094 } else { 7095 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7096 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 7097 + " config=" + config.SSID 7098 + " cnid=" + config.networkId 7099 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7100 + " my state " + getCurrentState().getName() 7101 + " uid = " + message.sendingUid 7102 + wasSkipped); 7103 } 7104 7105 autoRoamSetBSSID(netId, "any"); 7106 7107 if (message.sendingUid == Process.WIFI_UID 7108 || message.sendingUid == Process.SYSTEM_UID) { 7109 // As a sanity measure, clear the BSSID in the supplicant network block. 7110 // If system or Wifi Settings want to connect, they will not 7111 // specify the BSSID. 7112 // If an app however had added a BSSID to this configuration, and the BSSID 7113 // was wrong, Then we would forever fail to connect until that BSSID 7114 // is cleaned up. 7115 clearConfigBSSID(config, "CONNECT_NETWORK"); 7116 } 7117 7118 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7119 7120 /* Tell autojoin the user did try to connect to that network */ 7121 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 7122 7123 mWifiConfigStore.setLastSelectedConfiguration(netId); 7124 7125 didDisconnect = false; 7126 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7127 && mLastNetworkId != netId) { 7128 /** Supplicant will ignore the reconnect if we are currently associated, 7129 * hence trigger a disconnect 7130 */ 7131 didDisconnect = true; 7132 mWifiNative.disconnect(); 7133 } 7134 7135 // Make sure the network is enabled, since supplicant will not reenable it 7136 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7137 7138 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true) && 7139 mWifiNative.reconnect()) { 7140 lastConnectAttempt = System.currentTimeMillis(); 7141 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7142 7143 /* The state tracker handles enabling networks upon completion/failure */ 7144 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7145 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7146 if (didDisconnect) { 7147 /* Expect a disconnection from the old connection */ 7148 transitionTo(mDisconnectingState); 7149 } else if (updatedExisting && getCurrentState() == mConnectedState && 7150 getCurrentWifiConfiguration().networkId == netId) { 7151 // Update the current set of network capabilities, but stay in the 7152 // current state. 7153 updateCapabilities(config); 7154 } else { 7155 /** 7156 * Directly go to disconnected state where we 7157 * process the connection events from supplicant 7158 **/ 7159 transitionTo(mDisconnectedState); 7160 } 7161 } else { 7162 loge("Failed to connect config: " + config + " netId: " + netId); 7163 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7164 WifiManager.ERROR); 7165 break; 7166 } 7167 break; 7168 case WifiManager.SAVE_NETWORK: 7169 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7170 // Fall thru 7171 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7172 lastSavedConfigurationAttempt = null; // Used for debug 7173 config = (WifiConfiguration) message.obj; 7174 if (config == null) { 7175 loge("ERROR: SAVE_NETWORK with null configuration" 7176 + mSupplicantStateTracker.getSupplicantStateName() 7177 + " my state " + getCurrentState().getName()); 7178 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7179 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7180 WifiManager.ERROR); 7181 break; 7182 } 7183 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7184 int nid = config.networkId; 7185 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7186 + " config=" + config.SSID 7187 + " nid=" + config.networkId 7188 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7189 + " my state " + getCurrentState().getName()); 7190 7191 result = mWifiConfigStore.saveNetwork(config, -1); 7192 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7193 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7194 if (result.hasIpChanged()) { 7195 // The currently connection configuration was changed 7196 // We switched from DHCP to static or from static to DHCP, or the 7197 // static IP address has changed. 7198 log("Reconfiguring IP on connection"); 7199 // TODO: clear addresses and disable IPv6 7200 // to simplify obtainingIpState. 7201 transitionTo(mObtainingIpState); 7202 } 7203 if (result.hasProxyChanged()) { 7204 log("Reconfiguring proxy on connection"); 7205 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7206 } 7207 } 7208 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7209 if (VDBG) { 7210 loge("Success save network nid=" 7211 + Integer.toString(result.getNetworkId())); 7212 } 7213 7214 synchronized(mScanResultCache) { 7215 /** 7216 * If the command comes from WifiManager, then 7217 * tell autojoin the user did try to modify and save that network, 7218 * and interpret the SAVE_NETWORK as a request to connect 7219 */ 7220 boolean user = message.what == WifiManager.SAVE_NETWORK; 7221 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7222 , user, true); 7223 mWifiAutoJoinController.attemptAutoJoin(); 7224 } 7225 } else { 7226 loge("Failed to save network"); 7227 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7228 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7229 WifiManager.ERROR); 7230 } 7231 break; 7232 case WifiManager.FORGET_NETWORK: 7233 // Debug only, remember last configuration that was forgotten 7234 WifiConfiguration toRemove 7235 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7236 if (toRemove == null) { 7237 lastForgetConfigurationAttempt = null; 7238 } else { 7239 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7240 } 7241 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7242 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7243 } else { 7244 loge("Failed to forget network"); 7245 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7246 WifiManager.ERROR); 7247 } 7248 break; 7249 case WifiManager.START_WPS: 7250 WpsInfo wpsInfo = (WpsInfo) message.obj; 7251 WpsResult wpsResult; 7252 switch (wpsInfo.setup) { 7253 case WpsInfo.PBC: 7254 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7255 break; 7256 case WpsInfo.KEYPAD: 7257 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7258 break; 7259 case WpsInfo.DISPLAY: 7260 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7261 break; 7262 default: 7263 wpsResult = new WpsResult(Status.FAILURE); 7264 loge("Invalid setup for WPS"); 7265 break; 7266 } 7267 mWifiConfigStore.setLastSelectedConfiguration 7268 (WifiConfiguration.INVALID_NETWORK_ID); 7269 if (wpsResult.status == Status.SUCCESS) { 7270 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7271 transitionTo(mWpsRunningState); 7272 } else { 7273 loge("Failed to start WPS with config " + wpsInfo.toString()); 7274 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7275 } 7276 break; 7277 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7278 if (DBG) log("Network connection established"); 7279 mLastNetworkId = message.arg1; 7280 mLastBssid = (String) message.obj; 7281 7282 mWifiInfo.setBSSID(mLastBssid); 7283 mWifiInfo.setNetworkId(mLastNetworkId); 7284 7285 sendNetworkStateChangeBroadcast(mLastBssid); 7286 transitionTo(mObtainingIpState); 7287 break; 7288 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7289 // Calling handleNetworkDisconnect here is redundant because we might already 7290 // have called it when leaving L2ConnectedState to go to disconnecting state 7291 // or thru other path 7292 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7293 // if they are valid, and only in this case call handleNEtworkDisconnect, 7294 // TODO: this should be fixed for a L MR release 7295 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7296 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7297 // at the chip etc... 7298 if (DBG) log("ConnectModeState: Network connection lost "); 7299 handleNetworkDisconnect(); 7300 transitionTo(mDisconnectedState); 7301 break; 7302 case CMD_PNO_NETWORK_FOUND: 7303 processPnoNetworkFound((ScanResult[])message.obj); 7304 break; 7305 default: 7306 return NOT_HANDLED; 7307 } 7308 return HANDLED; 7309 } 7310 } 7311 7312 private void updateCapabilities(WifiConfiguration config) { 7313 if (config.ephemeral) { 7314 mNetworkCapabilities.removeCapability( 7315 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7316 } else { 7317 mNetworkCapabilities.addCapability( 7318 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7319 } 7320 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7321 } 7322 7323 private class WifiNetworkAgent extends NetworkAgent { 7324 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7325 NetworkCapabilities nc, LinkProperties lp, int score) { 7326 super(l, c, TAG, ni, nc, lp, score); 7327 } 7328 protected void unwanted() { 7329 // Ignore if we're not the current networkAgent. 7330 if (this != mNetworkAgent) return; 7331 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7332 + Integer.toString(mWifiInfo.score)); 7333 unwantedNetwork(network_status_unwanted_disconnect); 7334 } 7335 7336 protected void networkStatus(int status) { 7337 if (status == NetworkAgent.INVALID_NETWORK) { 7338 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7339 + Integer.toString(mWifiInfo.score)); 7340 unwantedNetwork(network_status_unwanted_disable_autojoin); 7341 } else if (status == NetworkAgent.VALID_NETWORK) { 7342 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7343 + Integer.toString(mWifiInfo.score)); 7344 doNetworkStatus(status); 7345 } 7346 } 7347 } 7348 7349 void unwantedNetwork(int reason) { 7350 sendMessage(CMD_UNWANTED_NETWORK, reason); 7351 } 7352 7353 void doNetworkStatus(int status) { 7354 sendMessage(CMD_NETWORK_STATUS, status); 7355 } 7356 7357 // rfc4186 & rfc4187: 7358 // create Permanent Identity base on IMSI, 7359 // identity = usernam@realm 7360 // with username = prefix | IMSI 7361 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7362 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7363 String mcc; 7364 String mnc; 7365 String prefix; 7366 7367 if (imsi == null || imsi.isEmpty()) 7368 return ""; 7369 7370 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7371 prefix = "1"; 7372 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7373 prefix = "0"; 7374 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7375 prefix = "6"; 7376 else // not a valide EapMethod 7377 return ""; 7378 7379 /* extract mcc & mnc from mccMnc */ 7380 if (mccMnc != null && !mccMnc.isEmpty()) { 7381 mcc = mccMnc.substring(0, 3); 7382 mnc = mccMnc.substring(3); 7383 if (mnc.length() == 2) 7384 mnc = "0" + mnc; 7385 } else { 7386 // extract mcc & mnc from IMSI, assume mnc size is 3 7387 mcc = imsi.substring(0, 3); 7388 mnc = imsi.substring(3, 6); 7389 } 7390 7391 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7392 } 7393 7394 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7395 if (config == null) 7396 return false; 7397 7398 // We are still seeing a fairly high power consumption triggered by autojoin scans 7399 // Hence do partial scans only for PSK configuration that are roamable since the 7400 // primary purpose of the partial scans is roaming. 7401 // Full badn scans with exponential backoff for the purpose or extended roaming and 7402 // network switching are performed unconditionally. 7403 ScanDetailCache scanDetailCache = 7404 mWifiConfigStore.getScanDetailCache(config); 7405 if (scanDetailCache == null 7406 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7407 || scanDetailCache.size() > 6) { 7408 //return true but to not trigger the scan 7409 return true; 7410 } 7411 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7412 ONE_HOUR_MILLI, restrictChannelList); 7413 if (channels != null && channels.size() != 0) { 7414 StringBuilder freqs = new StringBuilder(); 7415 boolean first = true; 7416 for (Integer channel : channels) { 7417 if (!first) 7418 freqs.append(","); 7419 freqs.append(channel.toString()); 7420 first = false; 7421 } 7422 //if (DBG) { 7423 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7424 //} 7425 // Call wifi native to start the scan 7426 if (startScanNative( 7427 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7428 freqs.toString())) { 7429 // Only count battery consumption if scan request is accepted 7430 noteScanStart(SCAN_ALARM_SOURCE, null); 7431 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7432 } else { 7433 // used for debug only, mark scan as failed 7434 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7435 } 7436 return true; 7437 } else { 7438 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7439 return false; 7440 } 7441 } 7442 7443 void clearCurrentConfigBSSID(String dbg) { 7444 // Clear the bssid in the current config's network block 7445 WifiConfiguration config = getCurrentWifiConfiguration(); 7446 if (config == null) 7447 return; 7448 clearConfigBSSID(config, dbg); 7449 } 7450 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7451 if (config == null) 7452 return; 7453 if (DBG) { 7454 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7455 + " config.bssid " + config.BSSID); 7456 } 7457 config.autoJoinBSSID = "any"; 7458 config.BSSID = "any"; 7459 if (DBG) { 7460 loge(dbg + " " + config.SSID 7461 + " nid=" + Integer.toString(config.networkId)); 7462 } 7463 mWifiConfigStore.saveWifiConfigBSSID(config); 7464 } 7465 7466 class L2ConnectedState extends State { 7467 @Override 7468 public void enter() { 7469 mRssiPollToken++; 7470 if (mEnableRssiPolling) { 7471 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7472 } 7473 if (mNetworkAgent != null) { 7474 loge("Have NetworkAgent when entering L2Connected"); 7475 setNetworkDetailedState(DetailedState.DISCONNECTED); 7476 } 7477 setNetworkDetailedState(DetailedState.CONNECTING); 7478 7479 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 7480 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7481 } 7482 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7483 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7484 mLinkProperties, 60); 7485 7486 // We must clear the config BSSID, as the wifi chipset may decide to roam 7487 // from this point on and having the BSSID specified in the network block would 7488 // cause the roam to faile and the device to disconnect 7489 clearCurrentConfigBSSID("L2ConnectedState"); 7490 } 7491 7492 @Override 7493 public void exit() { 7494 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7495 // Bug: 15347363 7496 // For paranoia's sake, call handleNetworkDisconnect 7497 // only if BSSID is null or last networkId 7498 // is not invalid. 7499 if (DBG) { 7500 StringBuilder sb = new StringBuilder(); 7501 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7502 if (mLastBssid !=null) { 7503 sb.append(" ").append(mLastBssid); 7504 } 7505 } 7506 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7507 handleNetworkDisconnect(); 7508 } 7509 } 7510 7511 @Override 7512 public boolean processMessage(Message message) { 7513 logStateAndMessage(message, getClass().getSimpleName()); 7514 7515 switch (message.what) { 7516 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7517 handlePreDhcpSetup(); 7518 break; 7519 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7520 handlePostDhcpSetup(); 7521 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7522 if (DBG) log("WifiStateMachine DHCP successful"); 7523 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7524 // We advance to mVerifyingLinkState because handleIPv4Success will call 7525 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7526 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7527 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_DHCP_FAILURE); 7528 if (DBG) { 7529 int count = -1; 7530 WifiConfiguration config = getCurrentWifiConfiguration(); 7531 if (config != null) { 7532 count = config.numConnectionFailures; 7533 } 7534 log("WifiStateMachine DHCP failure count=" + count); 7535 } 7536 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7537 // As above, we transition to mDisconnectingState via updateLinkProperties. 7538 } 7539 break; 7540 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7541 handleSuccessfulIpConfiguration(); 7542 sendConnectedState(); 7543 transitionTo(mConnectedState); 7544 break; 7545 case CMD_IP_CONFIGURATION_LOST: 7546 // Get Link layer stats so as we get fresh tx packet counters 7547 getWifiLinkLayerStats(true); 7548 handleIpConfigurationLost(); 7549 transitionTo(mDisconnectingState); 7550 break; 7551 case CMD_DISCONNECT: 7552 mWifiNative.disconnect(); 7553 transitionTo(mDisconnectingState); 7554 break; 7555 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7556 if (message.arg1 == 1) { 7557 mWifiNative.disconnect(); 7558 mTemporarilyDisconnectWifi = true; 7559 transitionTo(mDisconnectingState); 7560 } 7561 break; 7562 case CMD_SET_OPERATIONAL_MODE: 7563 if (message.arg1 != CONNECT_MODE) { 7564 sendMessage(CMD_DISCONNECT); 7565 deferMessage(message); 7566 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7567 noteWifiDisabledWhileAssociated(); 7568 } 7569 } 7570 mWifiConfigStore. 7571 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7572 break; 7573 case CMD_SET_COUNTRY_CODE: 7574 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7575 deferMessage(message); 7576 break; 7577 case CMD_START_SCAN: 7578 //if (DBG) { 7579 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7580 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7581 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7582 + " targetRoamBSSID=" + mTargetRoamBSSID 7583 + " RSSI=" + mWifiInfo.getRssi()); 7584 //} 7585 if (message.arg1 == SCAN_ALARM_SOURCE) { 7586 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7587 // not be processed) and restart the scan if needed 7588 boolean shouldScan = 7589 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7590 if (!checkAndRestartDelayedScan(message.arg2, 7591 shouldScan, 7592 mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 7593 null, null)) { 7594 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7595 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7596 + message.arg1 7597 + " " + message.arg2 + ", " + mDelayedScanCounter 7598 + " -> obsolete"); 7599 return HANDLED; 7600 } 7601 if (mP2pConnected.get()) { 7602 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7603 + message.arg1 7604 + " " + message.arg2 + ", " + mDelayedScanCounter 7605 + " ignore because P2P is connected"); 7606 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7607 return HANDLED; 7608 } 7609 boolean tryFullBandScan = false; 7610 boolean restrictChannelList = false; 7611 long now_ms = System.currentTimeMillis(); 7612 if (DBG) { 7613 loge("WifiStateMachine CMD_START_SCAN with age=" 7614 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7615 + " interval=" + fullBandConnectedTimeIntervalMilli 7616 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7617 } 7618 if (mWifiInfo != null) { 7619 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7620 (now_ms - lastFullBandConnectedTimeMilli) 7621 > fullBandConnectedTimeIntervalMilli) { 7622 if (DBG) { 7623 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7624 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7625 + " interval=" + fullBandConnectedTimeIntervalMilli 7626 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7627 } 7628 tryFullBandScan = true; 7629 } 7630 7631 if (mWifiInfo.txSuccessRate > 7632 mWifiConfigStore.maxTxPacketForFullScans 7633 || mWifiInfo.rxSuccessRate > 7634 mWifiConfigStore.maxRxPacketForFullScans) { 7635 // Too much traffic at the interface, hence no full band scan 7636 if (DBG) { 7637 loge("WifiStateMachine CMD_START_SCAN " + 7638 "prevent full band scan due to pkt rate"); 7639 } 7640 tryFullBandScan = false; 7641 } 7642 7643 if (mWifiInfo.txSuccessRate > 7644 mWifiConfigStore.maxTxPacketForPartialScans 7645 || mWifiInfo.rxSuccessRate > 7646 mWifiConfigStore.maxRxPacketForPartialScans) { 7647 // Don't scan if lots of packets are being sent 7648 restrictChannelList = true; 7649 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7650 if (DBG) { 7651 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7652 + " ...and ignore scans" 7653 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7654 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7655 } 7656 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7657 return HANDLED; 7658 } 7659 } 7660 } 7661 7662 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7663 if (DBG) { 7664 loge("WifiStateMachine CMD_START_SCAN full=" + 7665 tryFullBandScan); 7666 } 7667 if (currentConfiguration != null) { 7668 if (fullBandConnectedTimeIntervalMilli 7669 < mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) { 7670 // Sanity 7671 fullBandConnectedTimeIntervalMilli 7672 = mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(); 7673 } 7674 if (tryFullBandScan) { 7675 lastFullBandConnectedTimeMilli = now_ms; 7676 if (fullBandConnectedTimeIntervalMilli 7677 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7678 // Increase the interval 7679 fullBandConnectedTimeIntervalMilli 7680 = fullBandConnectedTimeIntervalMilli 7681 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7682 7683 if (DBG) { 7684 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7685 + fullBandConnectedTimeIntervalMilli); 7686 } 7687 } 7688 handleScanRequest( 7689 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7690 } else { 7691 if (!startScanForConfiguration( 7692 currentConfiguration, restrictChannelList)) { 7693 if (DBG) { 7694 loge("WifiStateMachine starting scan, " + 7695 " did not find channels -> full"); 7696 } 7697 lastFullBandConnectedTimeMilli = now_ms; 7698 if (fullBandConnectedTimeIntervalMilli 7699 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7700 // Increase the interval 7701 fullBandConnectedTimeIntervalMilli 7702 = fullBandConnectedTimeIntervalMilli 7703 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7704 7705 if (DBG) { 7706 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7707 + fullBandConnectedTimeIntervalMilli); 7708 } 7709 } 7710 handleScanRequest( 7711 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7712 } 7713 } 7714 7715 } else { 7716 loge("CMD_START_SCAN : connected mode and no configuration"); 7717 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7718 } 7719 } else { 7720 // Not scan alarm source 7721 return NOT_HANDLED; 7722 } 7723 break; 7724 /* Ignore connection to same network */ 7725 case WifiManager.CONNECT_NETWORK: 7726 int netId = message.arg1; 7727 if (mWifiInfo.getNetworkId() == netId) { 7728 break; 7729 } 7730 return NOT_HANDLED; 7731 /* Ignore */ 7732 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7733 break; 7734 case CMD_RSSI_POLL: 7735 if (message.arg1 == mRssiPollToken) { 7736 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7737 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7738 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7739 if (stats != null) { 7740 // Sanity check the results provided by driver 7741 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7742 && (stats.rssi_mgmt == 0 7743 || stats.beacon_rx == 0)) { 7744 stats = null; 7745 } 7746 } 7747 // Get Info and continue polling 7748 fetchRssiLinkSpeedAndFrequencyNative(); 7749 calculateWifiScore(stats); 7750 } 7751 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7752 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7753 7754 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7755 } else { 7756 // Polling has completed 7757 } 7758 break; 7759 case CMD_ENABLE_RSSI_POLL: 7760 cleanWifiScore(); 7761 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7762 mEnableRssiPolling = (message.arg1 == 1); 7763 } else { 7764 mEnableRssiPolling = false; 7765 } 7766 mRssiPollToken++; 7767 if (mEnableRssiPolling) { 7768 // First poll 7769 fetchRssiLinkSpeedAndFrequencyNative(); 7770 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7771 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7772 } 7773 break; 7774 case WifiManager.RSSI_PKTCNT_FETCH: 7775 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7776 fetchRssiLinkSpeedAndFrequencyNative(); 7777 info.rssi = mWifiInfo.getRssi(); 7778 fetchPktcntNative(info); 7779 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7780 break; 7781 case CMD_DELAYED_NETWORK_DISCONNECT: 7782 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7783 7784 // Ignore if we are not debouncing 7785 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7786 + message.arg1); 7787 return HANDLED; 7788 } else { 7789 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7790 + message.arg1); 7791 7792 linkDebouncing = false; 7793 // If we are still debouncing while this message comes, 7794 // it means we were not able to reconnect within the alloted time 7795 // = LINK_FLAPPING_DEBOUNCE_MSEC 7796 // and thus, trigger a real disconnect 7797 handleNetworkDisconnect(); 7798 transitionTo(mDisconnectedState); 7799 } 7800 break; 7801 case CMD_ASSOCIATED_BSSID: 7802 if ((String) message.obj == null) { 7803 loge("Associated command w/o BSSID"); 7804 break; 7805 } 7806 mLastBssid = (String) message.obj; 7807 if (mLastBssid != null 7808 && (mWifiInfo.getBSSID() == null 7809 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7810 mWifiInfo.setBSSID((String) message.obj); 7811 sendNetworkStateChangeBroadcast(mLastBssid); 7812 } 7813 break; 7814 default: 7815 return NOT_HANDLED; 7816 } 7817 7818 return HANDLED; 7819 } 7820 } 7821 7822 class ObtainingIpState extends State { 7823 @Override 7824 public void enter() { 7825 if (DBG) { 7826 String key = ""; 7827 if (getCurrentWifiConfiguration() != null) { 7828 key = getCurrentWifiConfiguration().configKey(); 7829 } 7830 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7831 + " " + key + " " 7832 + " roam=" + mAutoRoaming 7833 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7834 + " watchdog= " + obtainingIpWatchdogCount); 7835 } 7836 7837 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7838 // We might still be roaming 7839 linkDebouncing = false; 7840 7841 // Send event to CM & network change broadcast 7842 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7843 7844 // We must clear the config BSSID, as the wifi chipset may decide to roam 7845 // from this point on and having the BSSID specified in the network block would 7846 // cause the roam to faile and the device to disconnect 7847 clearCurrentConfigBSSID("ObtainingIpAddress"); 7848 7849 try { 7850 mNwService.enableIpv6(mInterfaceName); 7851 } catch (RemoteException re) { 7852 loge("Failed to enable IPv6: " + re); 7853 } catch (IllegalStateException e) { 7854 loge("Failed to enable IPv6: " + e); 7855 } 7856 7857 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7858 if (isRoaming()) { 7859 renewDhcp(); 7860 } else { 7861 // Remove any IP address on the interface in case we're switching from static 7862 // IP configuration to DHCP. This is safe because if we get here when not 7863 // roaming, we don't have a usable address. 7864 clearIPv4Address(mInterfaceName); 7865 startDhcp(); 7866 } 7867 obtainingIpWatchdogCount++; 7868 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7869 // Get Link layer stats so as we get fresh tx packet counters 7870 getWifiLinkLayerStats(true); 7871 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7872 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7873 } else { 7874 // stop any running dhcp before assigning static IP 7875 stopDhcp(); 7876 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7877 mLastNetworkId); 7878 if (config.ipAddress == null) { 7879 loge("Static IP lacks address"); 7880 sendMessage(CMD_STATIC_IP_FAILURE); 7881 } else { 7882 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7883 ifcg.setLinkAddress(config.ipAddress); 7884 ifcg.setInterfaceUp(); 7885 try { 7886 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7887 if (DBG) log("Static IP configuration succeeded"); 7888 DhcpResults dhcpResults = new DhcpResults(config); 7889 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7890 } catch (RemoteException re) { 7891 loge("Static IP configuration failed: " + re); 7892 sendMessage(CMD_STATIC_IP_FAILURE); 7893 } catch (IllegalStateException e) { 7894 loge("Static IP configuration failed: " + e); 7895 sendMessage(CMD_STATIC_IP_FAILURE); 7896 } 7897 } 7898 } 7899 } 7900 @Override 7901 public boolean processMessage(Message message) { 7902 logStateAndMessage(message, getClass().getSimpleName()); 7903 7904 switch(message.what) { 7905 case CMD_STATIC_IP_SUCCESS: 7906 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7907 break; 7908 case CMD_STATIC_IP_FAILURE: 7909 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7910 break; 7911 case CMD_AUTO_CONNECT: 7912 case CMD_AUTO_ROAM: 7913 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7914 break; 7915 case WifiManager.SAVE_NETWORK: 7916 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7917 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7918 deferMessage(message); 7919 break; 7920 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7921 case CMD_SET_HIGH_PERF_MODE: 7922 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7923 deferMessage(message); 7924 break; 7925 /* Defer scan request since we should not switch to other channels at DHCP */ 7926 case CMD_START_SCAN: 7927 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7928 deferMessage(message); 7929 break; 7930 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7931 if (message.arg1 == obtainingIpWatchdogCount) { 7932 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7933 + obtainingIpWatchdogCount); 7934 handleIpConfigurationLost(); 7935 transitionTo(mDisconnectingState); 7936 break; 7937 } 7938 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7939 break; 7940 default: 7941 return NOT_HANDLED; 7942 } 7943 return HANDLED; 7944 } 7945 } 7946 7947 class VerifyingLinkState extends State { 7948 @Override 7949 public void enter() { 7950 log(getName() + " enter"); 7951 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7952 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7953 sendNetworkStateChangeBroadcast(mLastBssid); 7954 // End roaming 7955 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7956 } 7957 @Override 7958 public boolean processMessage(Message message) { 7959 logStateAndMessage(message, getClass().getSimpleName()); 7960 7961 switch (message.what) { 7962 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7963 // Stay here 7964 log(getName() + " POOR_LINK_DETECTED: no transition"); 7965 break; 7966 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7967 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7968 7969 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7970 sendConnectedState(); 7971 transitionTo(mConnectedState); 7972 break; 7973 default: 7974 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7975 return NOT_HANDLED; 7976 } 7977 return HANDLED; 7978 } 7979 } 7980 7981 private void sendConnectedState() { 7982 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7983 // existing behaviour. The captive portal check really happens after we 7984 // transition into DetailedState.CONNECTED. 7985 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7986 mWifiConfigStore.updateStatus(mLastNetworkId, 7987 DetailedState.CAPTIVE_PORTAL_CHECK); 7988 sendNetworkStateChangeBroadcast(mLastBssid); 7989 7990 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7991 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7992 } 7993 7994 setNetworkDetailedState(DetailedState.CONNECTED); 7995 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7996 sendNetworkStateChangeBroadcast(mLastBssid); 7997 } 7998 7999 class RoamingState extends State { 8000 boolean mAssociated; 8001 @Override 8002 public void enter() { 8003 if (DBG) { 8004 log("RoamingState Enter" 8005 + " mScreenOn=" + mScreenOn ); 8006 } 8007 setScanAlarm(false); 8008 8009 // Make sure we disconnect if roaming fails 8010 roamWatchdogCount++; 8011 loge("Start Roam Watchdog " + roamWatchdogCount); 8012 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8013 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8014 mAssociated = false; 8015 } 8016 @Override 8017 public boolean processMessage(Message message) { 8018 logStateAndMessage(message, getClass().getSimpleName()); 8019 WifiConfiguration config; 8020 switch (message.what) { 8021 case CMD_IP_CONFIGURATION_LOST: 8022 config = getCurrentWifiConfiguration(); 8023 if (config != null) { 8024 mWifiLogger.captureBugReportData(WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8025 mWifiConfigStore.noteRoamingFailure(config, 8026 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8027 } 8028 return NOT_HANDLED; 8029 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8030 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8031 return HANDLED; 8032 case CMD_UNWANTED_NETWORK: 8033 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8034 return HANDLED; 8035 case CMD_SET_OPERATIONAL_MODE: 8036 if (message.arg1 != CONNECT_MODE) { 8037 deferMessage(message); 8038 } 8039 break; 8040 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8041 /** 8042 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8043 * before NETWORK_DISCONNECTION_EVENT 8044 * And there is an associated BSSID corresponding to our target BSSID, then 8045 * we have missed the network disconnection, transition to mDisconnectedState 8046 * and handle the rest of the events there. 8047 */ 8048 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8049 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8050 || stateChangeResult.state == SupplicantState.INACTIVE 8051 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8052 if (DBG) { 8053 log("STATE_CHANGE_EVENT in roaming state " 8054 + stateChangeResult.toString() ); 8055 } 8056 if (stateChangeResult.BSSID != null 8057 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8058 handleNetworkDisconnect(); 8059 transitionTo(mDisconnectedState); 8060 } 8061 } 8062 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8063 // We completed the layer2 roaming part 8064 mAssociated = true; 8065 if (stateChangeResult.BSSID != null) { 8066 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8067 } 8068 } 8069 break; 8070 case CMD_ROAM_WATCHDOG_TIMER: 8071 if (roamWatchdogCount == message.arg1) { 8072 if (DBG) log("roaming watchdog! -> disconnect"); 8073 mRoamFailCount++; 8074 handleNetworkDisconnect(); 8075 mWifiNative.disconnect(); 8076 transitionTo(mDisconnectedState); 8077 } 8078 break; 8079 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8080 if (mAssociated) { 8081 if (DBG) log("roaming and Network connection established"); 8082 mLastNetworkId = message.arg1; 8083 mLastBssid = (String) message.obj; 8084 mWifiInfo.setBSSID(mLastBssid); 8085 mWifiInfo.setNetworkId(mLastNetworkId); 8086 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8087 sendNetworkStateChangeBroadcast(mLastBssid); 8088 transitionTo(mObtainingIpState); 8089 } else { 8090 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8091 } 8092 break; 8093 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8094 // Throw away but only if it corresponds to the network we're roaming to 8095 String bssid = (String)message.obj; 8096 if (true) { 8097 String target = ""; 8098 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8099 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8100 + " BSSID=" + bssid 8101 + " target=" + target); 8102 } 8103 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8104 handleNetworkDisconnect(); 8105 transitionTo(mDisconnectedState); 8106 } 8107 break; 8108 case WifiMonitor.SSID_TEMP_DISABLED: 8109 // Auth error while roaming 8110 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8111 + " id=" + Integer.toString(message.arg1) 8112 + " isRoaming=" + isRoaming() 8113 + " roam=" + Integer.toString(mAutoRoaming)); 8114 if (message.arg1 == mLastNetworkId) { 8115 config = getCurrentWifiConfiguration(); 8116 if (config != null) { 8117 mWifiLogger.captureBugReportData( 8118 WifiLogger.REPORT_REASON_AUTOROAM_FAILURE); 8119 mWifiConfigStore.noteRoamingFailure(config, 8120 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8121 } 8122 handleNetworkDisconnect(); 8123 transitionTo(mDisconnectingState); 8124 } 8125 return NOT_HANDLED; 8126 case CMD_START_SCAN: 8127 deferMessage(message); 8128 break; 8129 default: 8130 return NOT_HANDLED; 8131 } 8132 return HANDLED; 8133 } 8134 8135 @Override 8136 public void exit() { 8137 loge("WifiStateMachine: Leaving Roaming state"); 8138 } 8139 } 8140 8141 class ConnectedState extends State { 8142 @Override 8143 public void enter() { 8144 String address; 8145 updateDefaultRouteMacAddress(1000); 8146 if (DBG) { 8147 log("Enter ConnectedState " 8148 + " mScreenOn=" + mScreenOn 8149 + " scanperiod=" 8150 + Integer.toString(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get()) 8151 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8152 + mWifiConfigStore.enableHalBasedPno.get() 8153 + " mHalBasedPnoEnableInDevSettings " + mHalBasedPnoEnableInDevSettings); 8154 } 8155 if (mScreenOn 8156 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8157 if (useHalBasedAutoJoinOffload()) { 8158 startGScanConnectedModeOffload("connectedEnter"); 8159 } else { 8160 // restart scan alarm 8161 startDelayedScan(mWifiConfigStore.wifiAssociatedShortScanIntervalMilli.get(), 8162 null, null); 8163 } 8164 } 8165 registerConnected(); 8166 lastConnectAttempt = 0; 8167 targetWificonfiguration = null; 8168 // Paranoia 8169 linkDebouncing = false; 8170 8171 // Not roaming anymore 8172 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8173 8174 if (testNetworkDisconnect) { 8175 testNetworkDisconnectCounter++; 8176 loge("ConnectedState Enter start disconnect test " + 8177 testNetworkDisconnectCounter); 8178 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8179 testNetworkDisconnectCounter, 0), 15000); 8180 } 8181 8182 // Reenable all networks, allow for hidden networks to be scanned 8183 mWifiConfigStore.enableAllNetworks(); 8184 8185 mLastDriverRoamAttempt = 0; 8186 8187 //startLazyRoam(); 8188 } 8189 @Override 8190 public boolean processMessage(Message message) { 8191 WifiConfiguration config = null; 8192 logStateAndMessage(message, getClass().getSimpleName()); 8193 8194 switch (message.what) { 8195 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8196 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8197 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8198 return HANDLED; 8199 } 8200 /* If we are still in Disconnected state after having discovered a valid 8201 * network this means autojoin didnt managed to associate to the network, 8202 * then restart PNO so as we will try associating to it again. 8203 */ 8204 if (useHalBasedAutoJoinOffload()) { 8205 if (mGScanStartTimeMilli == 0) { 8206 // If offload is not started, then start it... 8207 startGScanConnectedModeOffload("connectedRestart"); 8208 } else { 8209 // If offload is already started, then check if we need to increase 8210 // the scan period and restart the Gscan 8211 long now = System.currentTimeMillis(); 8212 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8213 && ((now - mGScanStartTimeMilli) 8214 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8215 && (mGScanPeriodMilli 8216 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8217 { 8218 startConnectedGScan("Connected restart gscan"); 8219 } 8220 } 8221 } 8222 break; 8223 case CMD_UPDATE_ASSOCIATED_SCAN_PERMISSION: 8224 updateAssociatedScanPermission(); 8225 break; 8226 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8227 if (DBG) log("Watchdog reports poor link"); 8228 transitionTo(mVerifyingLinkState); 8229 break; 8230 case CMD_UNWANTED_NETWORK: 8231 if (message.arg1 == network_status_unwanted_disconnect) { 8232 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8233 mWifiNative.disconnect(); 8234 transitionTo(mDisconnectingState); 8235 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8236 config = getCurrentWifiConfiguration(); 8237 if (config != null) { 8238 // Disable autojoin 8239 config.numNoInternetAccessReports += 1; 8240 config.dirty = true; 8241 mWifiConfigStore.writeKnownNetworkHistory(false); 8242 } 8243 } 8244 return HANDLED; 8245 case CMD_NETWORK_STATUS: 8246 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8247 config = getCurrentWifiConfiguration(); 8248 if (config != null) { 8249 if (!config.validatedInternetAccess 8250 || config.numNoInternetAccessReports != 0) { 8251 config.dirty = true; 8252 } 8253 // re-enable autojoin 8254 config.numNoInternetAccessReports = 0; 8255 config.validatedInternetAccess = true; 8256 mWifiConfigStore.writeKnownNetworkHistory(false); 8257 } 8258 } 8259 return HANDLED; 8260 case CMD_TEST_NETWORK_DISCONNECT: 8261 // Force a disconnect 8262 if (message.arg1 == testNetworkDisconnectCounter) { 8263 mWifiNative.disconnect(); 8264 } 8265 break; 8266 case CMD_ASSOCIATED_BSSID: 8267 // ASSOCIATING to a new BSSID while already connected, indicates 8268 // that driver is roaming 8269 mLastDriverRoamAttempt = System.currentTimeMillis(); 8270 String toBSSID = (String)message.obj; 8271 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8272 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8273 } 8274 return NOT_HANDLED; 8275 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8276 long lastRoam = 0; 8277 if (mLastDriverRoamAttempt != 0) { 8278 // Calculate time since last driver roam attempt 8279 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8280 mLastDriverRoamAttempt = 0; 8281 } 8282 if (unexpectedDisconnectedReason(message.arg2)) { 8283 mWifiLogger.captureBugReportData( 8284 WifiLogger.REPORT_REASON_UNEXPECTED_DISCONNECT); 8285 } 8286 config = getCurrentWifiConfiguration(); 8287 if (mScreenOn 8288 && !linkDebouncing 8289 && config != null 8290 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8291 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8292 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8293 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8294 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8295 && mWifiInfo.getRssi() > 8296 WifiConfiguration.BAD_RSSI_24) 8297 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8298 && mWifiInfo.getRssi() > 8299 WifiConfiguration.BAD_RSSI_5))) { 8300 // Start de-bouncing the L2 disconnection: 8301 // this L2 disconnection might be spurious. 8302 // Hence we allow 7 seconds for the state machine to try 8303 // to reconnect, go thru the 8304 // roaming cycle and enter Obtaining IP address 8305 // before signalling the disconnect to ConnectivityService and L3 8306 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8307 linkDebouncing = true; 8308 8309 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8310 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8311 if (DBG) { 8312 log("NETWORK_DISCONNECTION_EVENT in connected state" 8313 + " BSSID=" + mWifiInfo.getBSSID() 8314 + " RSSI=" + mWifiInfo.getRssi() 8315 + " freq=" + mWifiInfo.getFrequency() 8316 + " reason=" + message.arg2 8317 + " -> debounce"); 8318 } 8319 return HANDLED; 8320 } else { 8321 if (DBG) { 8322 int ajst = -1; 8323 if (config != null) ajst = config.autoJoinStatus; 8324 log("NETWORK_DISCONNECTION_EVENT in connected state" 8325 + " BSSID=" + mWifiInfo.getBSSID() 8326 + " RSSI=" + mWifiInfo.getRssi() 8327 + " freq=" + mWifiInfo.getFrequency() 8328 + " was debouncing=" + linkDebouncing 8329 + " reason=" + message.arg2 8330 + " ajst=" + ajst); 8331 } 8332 } 8333 break; 8334 case CMD_AUTO_ROAM: 8335 // Clear the driver roam indication since we are attempting a framerwork roam 8336 mLastDriverRoamAttempt = 0; 8337 8338 /* Connect command coming from auto-join */ 8339 ScanResult candidate = (ScanResult)message.obj; 8340 String bssid = "any"; 8341 if (candidate != null && candidate.is5GHz()) { 8342 // Only lock BSSID for 5GHz networks 8343 bssid = candidate.BSSID; 8344 } 8345 int netId = mLastNetworkId; 8346 config = getCurrentWifiConfiguration(); 8347 8348 8349 if (config == null) { 8350 loge("AUTO_ROAM and no config, bail out..."); 8351 break; 8352 } 8353 8354 loge("CMD_AUTO_ROAM sup state " 8355 + mSupplicantStateTracker.getSupplicantStateName() 8356 + " my state " + getCurrentState().getName() 8357 + " nid=" + Integer.toString(netId) 8358 + " config " + config.configKey() 8359 + " roam=" + Integer.toString(message.arg2) 8360 + " to " + bssid 8361 + " targetRoamBSSID " + mTargetRoamBSSID); 8362 8363 /* Save the BSSID so as to lock it @ firmware */ 8364 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8365 loge("AUTO_ROAM nothing to do"); 8366 // Same BSSID, nothing to do 8367 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8368 break; 8369 }; 8370 8371 // Make sure the network is enabled, since supplicant will not reenable it 8372 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8373 8374 boolean ret = false; 8375 if (mLastNetworkId != netId) { 8376 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 8377 mWifiNative.reconnect()) { 8378 ret = true; 8379 } 8380 } else { 8381 ret = mWifiNative.reassociate(); 8382 } 8383 if (ret) { 8384 lastConnectAttempt = System.currentTimeMillis(); 8385 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8386 8387 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8388 mAutoRoaming = message.arg2; 8389 transitionTo(mRoamingState); 8390 8391 } else { 8392 loge("Failed to connect config: " + config + " netId: " + netId); 8393 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8394 WifiManager.ERROR); 8395 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8396 break; 8397 } 8398 break; 8399 default: 8400 return NOT_HANDLED; 8401 } 8402 return HANDLED; 8403 } 8404 8405 @Override 8406 public void exit() { 8407 loge("WifiStateMachine: Leaving Connected state"); 8408 setScanAlarm(false); 8409 mLastDriverRoamAttempt = 0; 8410 8411 stopLazyRoam(); 8412 8413 mWhiteListedSsids = null; 8414 } 8415 } 8416 8417 class DisconnectingState extends State { 8418 8419 @Override 8420 public void enter() { 8421 8422 if (PDBG) { 8423 loge(" Enter DisconnectingState State scan interval " 8424 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8425 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8426 + " screenOn=" + mScreenOn); 8427 } 8428 8429 // Make sure we disconnect: we enter this state prior connecting to a new 8430 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 8431 // event which in this case will be indicating that supplicant started to associate. 8432 // In some cases supplicant doesn't ignore the connect requests (it might not 8433 // find the target SSID in its cache), 8434 // Therefore we end up stuck that state, hence the need for the watchdog. 8435 disconnectingWatchdogCount++; 8436 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8437 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8438 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8439 } 8440 8441 @Override 8442 public boolean processMessage(Message message) { 8443 logStateAndMessage(message, getClass().getSimpleName()); 8444 switch (message.what) { 8445 case CMD_SET_OPERATIONAL_MODE: 8446 if (message.arg1 != CONNECT_MODE) { 8447 deferMessage(message); 8448 } 8449 break; 8450 case CMD_START_SCAN: 8451 deferMessage(message); 8452 return HANDLED; 8453 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8454 if (disconnectingWatchdogCount == message.arg1) { 8455 if (DBG) log("disconnecting watchdog! -> disconnect"); 8456 handleNetworkDisconnect(); 8457 transitionTo(mDisconnectedState); 8458 } 8459 break; 8460 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8461 /** 8462 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8463 * we have missed the network disconnection, transition to mDisconnectedState 8464 * and handle the rest of the events there 8465 */ 8466 deferMessage(message); 8467 handleNetworkDisconnect(); 8468 transitionTo(mDisconnectedState); 8469 break; 8470 default: 8471 return NOT_HANDLED; 8472 } 8473 return HANDLED; 8474 } 8475 } 8476 8477 class DisconnectedState extends State { 8478 @Override 8479 public void enter() { 8480 // We dont scan frequently if this is a temporary disconnect 8481 // due to p2p 8482 if (mTemporarilyDisconnectWifi) { 8483 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8484 return; 8485 } 8486 8487 if (PDBG) { 8488 loge(" Enter DisconnectedState scan interval " 8489 + mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get() 8490 + " mLegacyPnoEnabled= " + mLegacyPnoEnabled 8491 + " screenOn=" + mScreenOn 8492 + " useGscan=" + mHalBasedPnoDriverSupported + "/" 8493 + mWifiConfigStore.enableHalBasedPno.get()); 8494 } 8495 8496 /** clear the roaming state, if we were roaming, we failed */ 8497 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8498 8499 if (useHalBasedAutoJoinOffload()) { 8500 startGScanDisconnectedModeOffload("disconnectedEnter"); 8501 } else { 8502 if (mScreenOn) { 8503 /** 8504 * screen lit and => delayed timer 8505 */ 8506 startDelayedScan(mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8507 null, null); 8508 } else { 8509 /** 8510 * screen dark and PNO supported => scan alarm disabled 8511 */ 8512 if (mBackgroundScanSupported) { 8513 /* If a regular scan result is pending, do not initiate background 8514 * scan until the scan results are returned. This is needed because 8515 * initiating a background scan will cancel the regular scan and 8516 * scan results will not be returned until background scanning is 8517 * cleared 8518 */ 8519 if (!mIsScanOngoing) { 8520 enableBackgroundScan(true); 8521 } 8522 } else { 8523 setScanAlarm(true); 8524 } 8525 } 8526 } 8527 8528 /** 8529 * If we have no networks saved, the supplicant stops doing the periodic scan. 8530 * The scans are useful to notify the user of the presence of an open network. 8531 * Note that these are not wake up scans. 8532 */ 8533 if (mNoNetworksPeriodicScan != 0 && !mP2pConnected.get() 8534 && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8535 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8536 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8537 } 8538 8539 mDisconnectedTimeStamp = System.currentTimeMillis(); 8540 8541 } 8542 @Override 8543 public boolean processMessage(Message message) { 8544 boolean ret = HANDLED; 8545 8546 logStateAndMessage(message, getClass().getSimpleName()); 8547 8548 switch (message.what) { 8549 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8550 if (mP2pConnected.get()) break; 8551 if (mNoNetworksPeriodicScan != 0 && message.arg1 == mPeriodicScanToken && 8552 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8553 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8554 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8555 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8556 } 8557 break; 8558 case WifiManager.FORGET_NETWORK: 8559 case CMD_REMOVE_NETWORK: 8560 // Set up a delayed message here. After the forget/remove is handled 8561 // the handled delayed message will determine if there is a need to 8562 // scan and continue 8563 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8564 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8565 ret = NOT_HANDLED; 8566 break; 8567 case CMD_SET_OPERATIONAL_MODE: 8568 if (message.arg1 != CONNECT_MODE) { 8569 mOperationalMode = message.arg1; 8570 8571 mWifiConfigStore.disableAllNetworks(); 8572 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8573 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8574 setWifiState(WIFI_STATE_DISABLED); 8575 } 8576 transitionTo(mScanModeState); 8577 } 8578 mWifiConfigStore. 8579 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8580 break; 8581 /* Ignore network disconnect */ 8582 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8583 break; 8584 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8585 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8586 if (DBG) { 8587 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8588 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8589 + " debouncing=" + linkDebouncing); 8590 } 8591 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8592 /* ConnectModeState does the rest of the handling */ 8593 ret = NOT_HANDLED; 8594 break; 8595 case CMD_START_SCAN: 8596 if (!checkOrDeferScanAllowed(message)) { 8597 // The scan request was rescheduled 8598 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8599 return HANDLED; 8600 } 8601 if (message.arg1 == SCAN_ALARM_SOURCE) { 8602 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8603 // not be processed) and restart the scan 8604 int period = mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(); 8605 if (mP2pConnected.get()) { 8606 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8607 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8608 period); 8609 } 8610 if (!checkAndRestartDelayedScan(message.arg2, 8611 true, period, null, null)) { 8612 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8613 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8614 + message.arg1 8615 + " " + message.arg2 + ", " + mDelayedScanCounter 8616 + " -> obsolete"); 8617 return HANDLED; 8618 } 8619 /* Disable background scan temporarily during a regular scan */ 8620 if (mLegacyPnoEnabled) { 8621 enableBackgroundScan(false); 8622 } 8623 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8624 ret = HANDLED; 8625 } else { 8626 8627 /* 8628 * The SCAN request is not handled in this state and 8629 * would eventually might/will get handled in the 8630 * parent's state. The PNO, if already enabled had to 8631 * get disabled before the SCAN trigger. Hence, stop 8632 * the PNO if already enabled in this state, though the 8633 * SCAN request is not handled(PNO disable before the 8634 * SCAN trigger in any other state is not the right 8635 * place to issue). 8636 */ 8637 8638 if (mLegacyPnoEnabled) { 8639 enableBackgroundScan(false); 8640 } 8641 ret = NOT_HANDLED; 8642 } 8643 break; 8644 case CMD_RESTART_AUTOJOIN_OFFLOAD: 8645 if ( (int)message.arg2 < mRestartAutoJoinOffloadCounter ) { 8646 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8647 return HANDLED; 8648 } 8649 /* If we are still in Disconnected state after having discovered a valid 8650 * network this means autojoin didnt managed to associate to the network, 8651 * then restart PNO so as we will try associating to it again. 8652 */ 8653 if (useHalBasedAutoJoinOffload()) { 8654 if (mGScanStartTimeMilli == 0) { 8655 // If offload is not started, then start it... 8656 startGScanDisconnectedModeOffload("disconnectedRestart"); 8657 } else { 8658 // If offload is already started, then check if we need to increase 8659 // the scan period and restart the Gscan 8660 long now = System.currentTimeMillis(); 8661 if (mGScanStartTimeMilli != 0 && now > mGScanStartTimeMilli 8662 && ((now - mGScanStartTimeMilli) 8663 > DISCONNECTED_SHORT_SCANS_DURATION_MILLI) 8664 && (mGScanPeriodMilli 8665 < mWifiConfigStore.wifiDisconnectedLongScanIntervalMilli.get())) 8666 { 8667 startDisconnectedGScan("disconnected restart gscan"); 8668 } 8669 } 8670 } 8671 break; 8672 case WifiMonitor.SCAN_RESULTS_EVENT: 8673 case WifiMonitor.SCAN_FAILED_EVENT: 8674 /* Re-enable background scan when a pending scan result is received */ 8675 if (!mScreenOn && mIsScanOngoing 8676 && mBackgroundScanSupported 8677 && !useHalBasedAutoJoinOffload()) { 8678 enableBackgroundScan(true); 8679 } 8680 /* Handled in parent state */ 8681 ret = NOT_HANDLED; 8682 break; 8683 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8684 NetworkInfo info = (NetworkInfo) message.obj; 8685 mP2pConnected.set(info.isConnected()); 8686 if (mP2pConnected.get()) { 8687 int defaultInterval = mContext.getResources().getInteger( 8688 R.integer.config_wifi_scan_interval_p2p_connected); 8689 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8690 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8691 defaultInterval); 8692 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8693 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8694 if (DBG) log("Turn on scanning after p2p disconnected"); 8695 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8696 ++mPeriodicScanToken, 0), mNoNetworksPeriodicScan); 8697 } else { 8698 // If P2P is not connected and there are saved networks, then restart 8699 // scanning at the normal period. This is necessary because scanning might 8700 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8701 // was set to zero. 8702 if (useHalBasedAutoJoinOffload()) { 8703 startGScanDisconnectedModeOffload("p2pRestart"); 8704 } else { 8705 startDelayedScan( 8706 mWifiConfigStore.wifiDisconnectedShortScanIntervalMilli.get(), 8707 null, null); 8708 } 8709 } 8710 break; 8711 case CMD_RECONNECT: 8712 case CMD_REASSOCIATE: 8713 if (mTemporarilyDisconnectWifi) { 8714 // Drop a third party reconnect/reassociate if STA is 8715 // temporarily disconnected for p2p 8716 break; 8717 } else { 8718 // ConnectModeState handles it 8719 ret = NOT_HANDLED; 8720 } 8721 break; 8722 case CMD_SCREEN_STATE_CHANGED: 8723 handleScreenStateChanged(message.arg1 != 0); 8724 break; 8725 default: 8726 ret = NOT_HANDLED; 8727 } 8728 return ret; 8729 } 8730 8731 @Override 8732 public void exit() { 8733 /* No need for a background scan upon exit from a disconnected state */ 8734 if (mLegacyPnoEnabled) { 8735 enableBackgroundScan(false); 8736 } 8737 setScanAlarm(false); 8738 } 8739 } 8740 8741 class WpsRunningState extends State { 8742 // Tracks the source to provide a reply 8743 private Message mSourceMessage; 8744 @Override 8745 public void enter() { 8746 mSourceMessage = Message.obtain(getCurrentMessage()); 8747 } 8748 @Override 8749 public boolean processMessage(Message message) { 8750 logStateAndMessage(message, getClass().getSimpleName()); 8751 8752 switch (message.what) { 8753 case WifiMonitor.WPS_SUCCESS_EVENT: 8754 // Ignore intermediate success, wait for full connection 8755 break; 8756 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8757 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8758 mSourceMessage.recycle(); 8759 mSourceMessage = null; 8760 deferMessage(message); 8761 transitionTo(mDisconnectedState); 8762 break; 8763 case WifiMonitor.WPS_OVERLAP_EVENT: 8764 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8765 WifiManager.WPS_OVERLAP_ERROR); 8766 mSourceMessage.recycle(); 8767 mSourceMessage = null; 8768 transitionTo(mDisconnectedState); 8769 break; 8770 case WifiMonitor.WPS_FAIL_EVENT: 8771 // Arg1 has the reason for the failure 8772 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8773 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8774 mSourceMessage.recycle(); 8775 mSourceMessage = null; 8776 transitionTo(mDisconnectedState); 8777 } else { 8778 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8779 } 8780 break; 8781 case WifiMonitor.WPS_TIMEOUT_EVENT: 8782 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8783 WifiManager.WPS_TIMED_OUT); 8784 mSourceMessage.recycle(); 8785 mSourceMessage = null; 8786 transitionTo(mDisconnectedState); 8787 break; 8788 case WifiManager.START_WPS: 8789 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8790 break; 8791 case WifiManager.CANCEL_WPS: 8792 if (mWifiNative.cancelWps()) { 8793 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8794 } else { 8795 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8796 } 8797 transitionTo(mDisconnectedState); 8798 break; 8799 /** 8800 * Defer all commands that can cause connections to a different network 8801 * or put the state machine out of connect mode 8802 */ 8803 case CMD_STOP_DRIVER: 8804 case CMD_SET_OPERATIONAL_MODE: 8805 case WifiManager.CONNECT_NETWORK: 8806 case CMD_ENABLE_NETWORK: 8807 case CMD_RECONNECT: 8808 case CMD_REASSOCIATE: 8809 deferMessage(message); 8810 break; 8811 case CMD_AUTO_CONNECT: 8812 case CMD_AUTO_ROAM: 8813 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8814 return HANDLED; 8815 case CMD_START_SCAN: 8816 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8817 return HANDLED; 8818 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8819 if (DBG) log("Network connection lost"); 8820 handleNetworkDisconnect(); 8821 break; 8822 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8823 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8824 break; 8825 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8826 // Disregard auth failure events during WPS connection. The 8827 // EAP sequence is retried several times, and there might be 8828 // failures (especially for wps pin). We will get a WPS_XXX 8829 // event at the end of the sequence anyway. 8830 if (DBG) log("Ignore auth failure during WPS connection"); 8831 break; 8832 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8833 // Throw away supplicant state changes when WPS is running. 8834 // We will start getting supplicant state changes once we get 8835 // a WPS success or failure 8836 break; 8837 default: 8838 return NOT_HANDLED; 8839 } 8840 return HANDLED; 8841 } 8842 8843 @Override 8844 public void exit() { 8845 mWifiConfigStore.enableAllNetworks(); 8846 mWifiConfigStore.loadConfiguredNetworks(); 8847 } 8848 } 8849 8850 class SoftApStartingState extends State { 8851 @Override 8852 public void enter() { 8853 final Message message = getCurrentMessage(); 8854 if (message.what == CMD_START_AP) { 8855 final WifiConfiguration config = (WifiConfiguration) message.obj; 8856 8857 if (config == null) { 8858 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8859 } else { 8860 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8861 startSoftApWithConfig(config); 8862 } 8863 } else { 8864 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8865 } 8866 } 8867 @Override 8868 public boolean processMessage(Message message) { 8869 logStateAndMessage(message, getClass().getSimpleName()); 8870 8871 switch(message.what) { 8872 case CMD_START_SUPPLICANT: 8873 case CMD_STOP_SUPPLICANT: 8874 case CMD_START_AP: 8875 case CMD_STOP_AP: 8876 case CMD_START_DRIVER: 8877 case CMD_STOP_DRIVER: 8878 case CMD_SET_OPERATIONAL_MODE: 8879 case CMD_SET_COUNTRY_CODE: 8880 case CMD_SET_FREQUENCY_BAND: 8881 case CMD_START_PACKET_FILTERING: 8882 case CMD_STOP_PACKET_FILTERING: 8883 case CMD_TETHER_STATE_CHANGE: 8884 deferMessage(message); 8885 break; 8886 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8887 WifiConfiguration config = (WifiConfiguration) message.obj; 8888 if (config != null) { 8889 startSoftApWithConfig(config); 8890 } else { 8891 loge("Softap config is null!"); 8892 sendMessage(CMD_START_AP_FAILURE); 8893 } 8894 break; 8895 case CMD_START_AP_SUCCESS: 8896 setWifiApState(WIFI_AP_STATE_ENABLED); 8897 transitionTo(mSoftApStartedState); 8898 break; 8899 case CMD_START_AP_FAILURE: 8900 setWifiApState(WIFI_AP_STATE_FAILED); 8901 transitionTo(mInitialState); 8902 break; 8903 default: 8904 return NOT_HANDLED; 8905 } 8906 return HANDLED; 8907 } 8908 } 8909 8910 class SoftApStartedState extends State { 8911 @Override 8912 public boolean processMessage(Message message) { 8913 logStateAndMessage(message, getClass().getSimpleName()); 8914 8915 switch(message.what) { 8916 case CMD_STOP_AP: 8917 if (DBG) log("Stopping Soft AP"); 8918 /* We have not tethered at this point, so we just shutdown soft Ap */ 8919 try { 8920 mNwService.stopAccessPoint(mInterfaceName); 8921 } catch(Exception e) { 8922 loge("Exception in stopAccessPoint()"); 8923 } 8924 setWifiApState(WIFI_AP_STATE_DISABLED); 8925 transitionTo(mInitialState); 8926 break; 8927 case CMD_START_AP: 8928 // Ignore a start on a running access point 8929 break; 8930 // Fail client mode operation when soft AP is enabled 8931 case CMD_START_SUPPLICANT: 8932 loge("Cannot start supplicant with a running soft AP"); 8933 setWifiState(WIFI_STATE_UNKNOWN); 8934 break; 8935 case CMD_TETHER_STATE_CHANGE: 8936 TetherStateChange stateChange = (TetherStateChange) message.obj; 8937 if (startTethering(stateChange.available)) { 8938 transitionTo(mTetheringState); 8939 } 8940 break; 8941 default: 8942 return NOT_HANDLED; 8943 } 8944 return HANDLED; 8945 } 8946 } 8947 8948 class TetheringState extends State { 8949 @Override 8950 public void enter() { 8951 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8952 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8953 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8954 } 8955 @Override 8956 public boolean processMessage(Message message) { 8957 logStateAndMessage(message, getClass().getSimpleName()); 8958 8959 switch(message.what) { 8960 case CMD_TETHER_STATE_CHANGE: 8961 TetherStateChange stateChange = (TetherStateChange) message.obj; 8962 if (isWifiTethered(stateChange.active)) { 8963 transitionTo(mTetheredState); 8964 } 8965 return HANDLED; 8966 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8967 if (message.arg1 == mTetherToken) { 8968 loge("Failed to get tether update, shutdown soft access point"); 8969 transitionTo(mSoftApStartedState); 8970 // Needs to be first thing handled 8971 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8972 } 8973 break; 8974 case CMD_START_SUPPLICANT: 8975 case CMD_STOP_SUPPLICANT: 8976 case CMD_START_AP: 8977 case CMD_STOP_AP: 8978 case CMD_START_DRIVER: 8979 case CMD_STOP_DRIVER: 8980 case CMD_SET_OPERATIONAL_MODE: 8981 case CMD_SET_COUNTRY_CODE: 8982 case CMD_SET_FREQUENCY_BAND: 8983 case CMD_START_PACKET_FILTERING: 8984 case CMD_STOP_PACKET_FILTERING: 8985 deferMessage(message); 8986 break; 8987 default: 8988 return NOT_HANDLED; 8989 } 8990 return HANDLED; 8991 } 8992 } 8993 8994 class TetheredState extends State { 8995 @Override 8996 public boolean processMessage(Message message) { 8997 logStateAndMessage(message, getClass().getSimpleName()); 8998 8999 switch(message.what) { 9000 case CMD_TETHER_STATE_CHANGE: 9001 TetherStateChange stateChange = (TetherStateChange) message.obj; 9002 if (!isWifiTethered(stateChange.active)) { 9003 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 9004 setHostApRunning(null, false); 9005 setHostApRunning(null, true); 9006 } 9007 return HANDLED; 9008 case CMD_STOP_AP: 9009 if (DBG) log("Untethering before stopping AP"); 9010 setWifiApState(WIFI_AP_STATE_DISABLING); 9011 stopTethering(); 9012 transitionTo(mUntetheringState); 9013 // More work to do after untethering 9014 deferMessage(message); 9015 break; 9016 default: 9017 return NOT_HANDLED; 9018 } 9019 return HANDLED; 9020 } 9021 } 9022 9023 class UntetheringState extends State { 9024 @Override 9025 public void enter() { 9026 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 9027 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 9028 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 9029 9030 } 9031 @Override 9032 public boolean processMessage(Message message) { 9033 logStateAndMessage(message, getClass().getSimpleName()); 9034 9035 switch(message.what) { 9036 case CMD_TETHER_STATE_CHANGE: 9037 TetherStateChange stateChange = (TetherStateChange) message.obj; 9038 9039 /* Wait till wifi is untethered */ 9040 if (isWifiTethered(stateChange.active)) break; 9041 9042 transitionTo(mSoftApStartedState); 9043 break; 9044 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 9045 if (message.arg1 == mTetherToken) { 9046 loge("Failed to get tether update, force stop access point"); 9047 transitionTo(mSoftApStartedState); 9048 } 9049 break; 9050 case CMD_START_SUPPLICANT: 9051 case CMD_STOP_SUPPLICANT: 9052 case CMD_START_AP: 9053 case CMD_STOP_AP: 9054 case CMD_START_DRIVER: 9055 case CMD_STOP_DRIVER: 9056 case CMD_SET_OPERATIONAL_MODE: 9057 case CMD_SET_COUNTRY_CODE: 9058 case CMD_SET_FREQUENCY_BAND: 9059 case CMD_START_PACKET_FILTERING: 9060 case CMD_STOP_PACKET_FILTERING: 9061 deferMessage(message); 9062 break; 9063 default: 9064 return NOT_HANDLED; 9065 } 9066 return HANDLED; 9067 } 9068 } 9069 9070 //State machine initiated requests can have replyTo set to null indicating 9071 //there are no recepients, we ignore those reply actions 9072 private void replyToMessage(Message msg, int what) { 9073 if (msg.replyTo == null) return; 9074 Message dstMsg = obtainMessageWithArg2(msg); 9075 dstMsg.what = what; 9076 mReplyChannel.replyToMessage(msg, dstMsg); 9077 } 9078 9079 private void replyToMessage(Message msg, int what, int arg1) { 9080 if (msg.replyTo == null) return; 9081 Message dstMsg = obtainMessageWithArg2(msg); 9082 dstMsg.what = what; 9083 dstMsg.arg1 = arg1; 9084 mReplyChannel.replyToMessage(msg, dstMsg); 9085 } 9086 9087 private void replyToMessage(Message msg, int what, Object obj) { 9088 if (msg.replyTo == null) return; 9089 Message dstMsg = obtainMessageWithArg2(msg); 9090 dstMsg.what = what; 9091 dstMsg.obj = obj; 9092 mReplyChannel.replyToMessage(msg, dstMsg); 9093 } 9094 9095 /** 9096 * arg2 on the source message has a unique id that needs to be retained in replies 9097 * to match the request 9098 9099 * see WifiManager for details 9100 */ 9101 private Message obtainMessageWithArg2(Message srcMsg) { 9102 Message msg = Message.obtain(); 9103 msg.arg2 = srcMsg.arg2; 9104 return msg; 9105 } 9106 9107 private static int parseHex(char ch) { 9108 if ('0' <= ch && ch <= '9') { 9109 return ch - '0'; 9110 } else if ('a' <= ch && ch <= 'f') { 9111 return ch - 'a' + 10; 9112 } else if ('A' <= ch && ch <= 'F') { 9113 return ch - 'A' + 10; 9114 } else { 9115 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9116 } 9117 } 9118 9119 private byte[] parseHex(String hex) { 9120 /* This only works for good input; don't throw bad data at it */ 9121 if (hex == null) { 9122 return new byte[0]; 9123 } 9124 9125 if (hex.length() % 2 != 0) { 9126 throw new NumberFormatException(hex + " is not a valid hex string"); 9127 } 9128 9129 byte[] result = new byte[(hex.length())/2 + 1]; 9130 result[0] = (byte) ((hex.length())/2); 9131 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9132 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9133 byte b = (byte) (val & 0xFF); 9134 result[j] = b; 9135 } 9136 9137 return result; 9138 } 9139 9140 private static String makeHex(byte[] bytes) { 9141 StringBuilder sb = new StringBuilder(); 9142 for (byte b : bytes) { 9143 sb.append(String.format("%02x", b)); 9144 } 9145 return sb.toString(); 9146 } 9147 9148 private static String makeHex(byte[] bytes, int from, int len) { 9149 StringBuilder sb = new StringBuilder(); 9150 for (int i = 0; i < len; i++) { 9151 sb.append(String.format("%02x", bytes[from+i])); 9152 } 9153 return sb.toString(); 9154 } 9155 9156 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9157 9158 int len = array1.length + array2.length + array3.length; 9159 9160 if (array1.length != 0) { 9161 len++; /* add another byte for size */ 9162 } 9163 9164 if (array2.length != 0) { 9165 len++; /* add another byte for size */ 9166 } 9167 9168 if (array3.length != 0) { 9169 len++; /* add another byte for size */ 9170 } 9171 9172 byte[] result = new byte[len]; 9173 9174 int index = 0; 9175 if (array1.length != 0) { 9176 result[index] = (byte) (array1.length & 0xFF); 9177 index++; 9178 for (byte b : array1) { 9179 result[index] = b; 9180 index++; 9181 } 9182 } 9183 9184 if (array2.length != 0) { 9185 result[index] = (byte) (array2.length & 0xFF); 9186 index++; 9187 for (byte b : array2) { 9188 result[index] = b; 9189 index++; 9190 } 9191 } 9192 9193 if (array3.length != 0) { 9194 result[index] = (byte) (array3.length & 0xFF); 9195 index++; 9196 for (byte b : array3) { 9197 result[index] = b; 9198 index++; 9199 } 9200 } 9201 return result; 9202 } 9203 9204 private static byte[] concatHex(byte[] array1, byte[] array2) { 9205 9206 int len = array1.length + array2.length; 9207 9208 byte[] result = new byte[len]; 9209 9210 int index = 0; 9211 if (array1.length != 0) { 9212 for (byte b : array1) { 9213 result[index] = b; 9214 index++; 9215 } 9216 } 9217 9218 if (array2.length != 0) { 9219 for (byte b : array2) { 9220 result[index] = b; 9221 index++; 9222 } 9223 } 9224 9225 return result; 9226 } 9227 9228 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9229 if (targetWificonfiguration == null 9230 || targetWificonfiguration.networkId == requestData.networkId) { 9231 logd("id matches targetWifiConfiguration"); 9232 } else { 9233 logd("id does not match targetWifiConfiguration"); 9234 return; 9235 } 9236 9237 TelephonyManager tm = (TelephonyManager) 9238 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9239 9240 if (tm != null) { 9241 StringBuilder sb = new StringBuilder(); 9242 for (String challenge : requestData.data) { 9243 9244 if (challenge == null || challenge.isEmpty()) 9245 continue; 9246 logd("RAND = " + challenge); 9247 9248 byte[] rand = null; 9249 try { 9250 rand = parseHex(challenge); 9251 } catch (NumberFormatException e) { 9252 loge("malformed challenge"); 9253 continue; 9254 } 9255 9256 String base64Challenge = android.util.Base64.encodeToString( 9257 rand, android.util.Base64.NO_WRAP); 9258 /* 9259 * First, try with appType = 2 => USIM according to 9260 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9261 */ 9262 int appType = 2; 9263 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9264 if (tmResponse == null) { 9265 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9266 * appType = 1 => SIM 9267 */ 9268 appType = 1; 9269 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9270 } 9271 logv("Raw Response - " + tmResponse); 9272 9273 if (tmResponse != null && tmResponse.length() > 4) { 9274 byte[] result = android.util.Base64.decode(tmResponse, 9275 android.util.Base64.DEFAULT); 9276 logv("Hex Response -" + makeHex(result)); 9277 int sres_len = result[0]; 9278 String sres = makeHex(result, 1, sres_len); 9279 int kc_offset = 1+sres_len; 9280 int kc_len = result[kc_offset]; 9281 String kc = makeHex(result, 1+kc_offset, kc_len); 9282 sb.append(":" + kc + ":" + sres); 9283 logv("kc:" + kc + " sres:" + sres); 9284 } else { 9285 loge("bad response - " + tmResponse); 9286 } 9287 } 9288 9289 String response = sb.toString(); 9290 logv("Supplicant Response -" + response); 9291 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9292 } else { 9293 loge("could not get telephony manager"); 9294 } 9295 } 9296 9297 void handle3GAuthRequest(SimAuthRequestData requestData) { 9298 StringBuilder sb = new StringBuilder(); 9299 byte[] rand = null; 9300 byte[] authn = null; 9301 String res_type = "UMTS-AUTH"; 9302 9303 if (targetWificonfiguration == null 9304 || targetWificonfiguration.networkId == requestData.networkId) { 9305 logd("id matches targetWifiConfiguration"); 9306 } else { 9307 logd("id does not match targetWifiConfiguration"); 9308 return; 9309 } 9310 if (requestData.data.length == 2) { 9311 try { 9312 rand = parseHex(requestData.data[0]); 9313 authn = parseHex(requestData.data[1]); 9314 } catch (NumberFormatException e) { 9315 loge("malformed challenge"); 9316 } 9317 } else { 9318 loge("malformed challenge"); 9319 } 9320 9321 String tmResponse = ""; 9322 if (rand != null && authn != null) { 9323 String base64Challenge = android.util.Base64.encodeToString( 9324 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9325 9326 TelephonyManager tm = (TelephonyManager) 9327 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9328 if (tm != null) { 9329 int appType = 2; // 2 => USIM 9330 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9331 logv("Raw Response - " + tmResponse); 9332 } else { 9333 loge("could not get telephony manager"); 9334 } 9335 } 9336 9337 if (tmResponse != null && tmResponse.length() > 4) { 9338 byte[] result = android.util.Base64.decode(tmResponse, 9339 android.util.Base64.DEFAULT); 9340 loge("Hex Response - " + makeHex(result)); 9341 byte tag = result[0]; 9342 if (tag == (byte) 0xdb) { 9343 logv("successful 3G authentication "); 9344 int res_len = result[1]; 9345 String res = makeHex(result, 2, res_len); 9346 int ck_len = result[res_len + 2]; 9347 String ck = makeHex(result, res_len + 3, ck_len); 9348 int ik_len = result[res_len + ck_len + 3]; 9349 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9350 sb.append(":" + ik + ":" + ck + ":" + res); 9351 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9352 } else if (tag == (byte) 0xdc) { 9353 loge("synchronisation failure"); 9354 int auts_len = result[1]; 9355 String auts = makeHex(result, 2, auts_len); 9356 res_type = "UMTS-AUTS"; 9357 sb.append(":" + auts); 9358 logv("auts:" + auts); 9359 } else { 9360 loge("bad response - unknown tag = " + tag); 9361 return; 9362 } 9363 } else { 9364 loge("bad response - " + tmResponse); 9365 return; 9366 } 9367 9368 String response = sb.toString(); 9369 logv("Supplicant Response -" + response); 9370 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9371 } 9372 9373 /** 9374 * @param reason reason code from supplicant on network disconnected event 9375 * @return true if this is a suspicious disconnect 9376 */ 9377 static boolean unexpectedDisconnectedReason(int reason) { 9378 return reason == 2 // PREV_AUTH_NOT_VALID 9379 || reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA 9380 || reason == 7 // FRAME_FROM_NONASSOC_STA 9381 || reason == 8 // STA_HAS_LEFT 9382 || reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH 9383 || reason == 14 // MICHAEL_MIC_FAILURE 9384 || reason == 15 // 4WAY_HANDSHAKE_TIMEOUT 9385 || reason == 16 // GROUP_KEY_UPDATE_TIMEOUT 9386 || reason == 18 // GROUP_CIPHER_NOT_VALID 9387 || reason == 19 // PAIRWISE_CIPHER_NOT_VALID 9388 || reason == 23 // IEEE_802_1X_AUTH_FAILED 9389 || reason == 34; // DISASSOC_LOW_ACK 9390 } 9391} 9392