WifiStateMachine.java revision 9ac124e3b281e356ceb5d2faab7932fd77dbe63f
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.BatchedScanResult; 64import android.net.wifi.BatchedScanSettings; 65import android.net.wifi.RssiPacketCountInfo; 66import android.net.wifi.ScanResult; 67import android.net.wifi.ScanSettings; 68import android.net.wifi.SupplicantState; 69import android.net.wifi.WifiChannel; 70import android.net.wifi.WifiConfiguration; 71import android.net.wifi.WifiConnectionStatistics; 72import android.net.wifi.WifiEnterpriseConfig; 73import android.net.wifi.WifiInfo; 74import android.net.wifi.WifiLinkLayerStats; 75import android.net.wifi.WifiManager; 76import android.net.wifi.WifiScanner; 77import android.net.wifi.WifiSsid; 78import android.net.wifi.WpsInfo; 79import android.net.wifi.WpsResult; 80import android.net.wifi.WpsResult.Status; 81import android.net.wifi.p2p.IWifiP2pManager; 82import android.net.wifi.IWifiScanner; 83import android.os.BatteryStats; 84import android.os.Bundle; 85import android.os.IBinder; 86import android.os.INetworkManagementService; 87import android.os.Looper; 88import android.os.Message; 89import android.os.Messenger; 90import android.os.PowerManager; 91import android.os.Process; 92import android.os.RemoteException; 93import android.os.ServiceManager; 94import android.os.SystemClock; 95import android.os.SystemProperties; 96import android.os.UserHandle; 97import android.os.WorkSource; 98import android.provider.Settings; 99import android.telephony.TelephonyManager; 100import android.text.TextUtils; 101import android.util.Log; 102import android.util.LruCache; 103 104import com.android.internal.R; 105import com.android.internal.app.IBatteryStats; 106import com.android.internal.util.AsyncChannel; 107import com.android.internal.util.Protocol; 108import com.android.internal.util.State; 109import com.android.internal.util.StateMachine; 110import com.android.server.net.NetlinkTracker; 111import com.android.server.wifi.hotspot2.NetworkDetail; 112import com.android.server.wifi.hotspot2.SupplicantBridge; 113import com.android.server.wifi.p2p.WifiP2pServiceImpl; 114 115import java.io.BufferedReader; 116import java.io.FileDescriptor; 117import java.io.FileNotFoundException; 118import java.io.FileReader; 119import java.io.IOException; 120import java.io.PrintWriter; 121import java.net.Inet4Address; 122import java.net.InetAddress; 123import java.net.SocketException; 124import java.nio.BufferUnderflowException; 125import java.util.ArrayList; 126import java.util.Calendar; 127import java.util.HashSet; 128import java.util.LinkedList; 129import java.util.List; 130import java.util.Locale; 131import java.util.Queue; 132import java.util.Random; 133import java.util.concurrent.atomic.AtomicBoolean; 134import java.util.concurrent.atomic.AtomicInteger; 135import java.util.regex.Matcher; 136import java.util.regex.Pattern; 137 138/** 139 * Track the state of Wifi connectivity. All event handling is done here, 140 * and all changes in connectivity state are initiated here. 141 * 142 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 143 * In the current implementation, we support concurrent wifi p2p and wifi operation. 144 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 145 * handles p2p operation. 146 * 147 * @hide 148 */ 149public class WifiStateMachine extends StateMachine implements WifiNative.WifiPnoEventHandler { 150 151 private static final String NETWORKTYPE = "WIFI"; 152 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 153 private static boolean DBG = true; 154 private static boolean VDBG = false; 155 private static boolean VVDBG = false; 156 private static boolean mLogMessages = false; 157 private static final String TAG = "WifiStateMachine"; 158 159 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 160 161 private static final String GOOGLE_OUI = "DA-A1-19"; 162 163 /* temporary debug flag - best network selection development */ 164 private static boolean PDBG = true; 165 166 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 167 * the corresponding BSSID. 168 */ 169 private boolean didBlackListBSSID = false; 170 171 /** 172 * Log with error attribute 173 * 174 * @param s is string log 175 */ 176 protected void loge(String s) { 177 Log.e(getName(), s); 178 } 179 protected void log(String s) { 180 Log.e(getName(), s); 181 } 182 183 private WifiMonitor mWifiMonitor; 184 private WifiNative mWifiNative; 185 private WifiConfigStore mWifiConfigStore; 186 private WifiAutoJoinController mWifiAutoJoinController; 187 private INetworkManagementService mNwService; 188 private ConnectivityManager mCm; 189 private WifiLogger mWifiLogger; 190 191 private final boolean mP2pSupported; 192 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 193 private boolean mTemporarilyDisconnectWifi = false; 194 private final String mPrimaryDeviceType; 195 196 /* Scan results handling */ 197 private List<ScanDetail> mScanResults = new ArrayList<>(); 198 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 199 private static final int SCAN_RESULT_CACHE_SIZE = 160; 200 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 201 // For debug, number of known scan results that were found as part of last scan result event, 202 // as well the number of scans results returned by the supplicant with that message 203 private int mNumScanResultsKnown; 204 private int mNumScanResultsReturned; 205 206 /* Batch scan results */ 207 private final List<BatchedScanResult> mBatchedScanResults = 208 new ArrayList<BatchedScanResult>(); 209 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 210 private int mExpectedBatchedScans = 0; 211 private long mBatchedScanMinPollTime = 0; 212 213 private boolean mScreenOn = false; 214 215 /* Chipset supports background scan */ 216 private final boolean mBackgroundScanSupported; 217 218 private String mInterfaceName; 219 /* Tethering interface could be separate from wlan interface */ 220 private String mTetherInterfaceName; 221 222 private int mLastSignalLevel = -1; 223 private String mLastBssid; 224 private int mLastNetworkId; // The network Id we successfully joined 225 private boolean linkDebouncing = false; 226 227 private boolean mAlwaysOnPnoSupported = false; 228 private int mHalFeatureSet = 0; 229 private static int mPnoResultFound = 0; 230 231 @Override 232 public void onPnoNetworkFound(ScanResult results[]) { 233 if (DBG) { 234 Log.e(TAG, "onPnoNetworkFound event received num = " + results.length); 235 for (int i = 0; i < results.length; i++) { 236 Log.e(TAG, results[i].toString()); 237 } 238 } 239 sendMessage(CMD_PNO_NETWORK_FOUND, results.length, 0, results); 240 } 241 242 public void processPnoNetworkFound(ScanResult results[]) { 243 ScanSettings settings = new ScanSettings(); 244 settings.channelSet = new ArrayList<WifiChannel>(); 245 246 for (int i=0; i<results.length; i++) { 247 WifiChannel channel = new WifiChannel(); 248 channel.freqMHz = results[i].frequency; 249 settings.channelSet.add(channel); 250 } 251 252 stopPno(); 253 254 Log.e(TAG, "processPnoNetworkFound starting scan cnt=" + mPnoResultFound); 255 startScan(PNO_NETWORK_FOUND_SOURCE, mPnoResultFound, settings, null); 256 mPnoResultFound ++; 257 //sendMessage(CMD_SCAN_RESULTS_AVAILABLE); 258 259 // restart Pno after 30ms 260 sendMessageDelayed(CMD_START_PNO, 30 * 1000); 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 mEnableBackgroundScan = 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 private static final String BATCHED_SETTING = "batched_settings"; 296 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 297 298 /* Tracks if state machine has received any screen state change broadcast yet. 299 * We can miss one of these at boot. 300 */ 301 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 302 303 private boolean mBluetoothConnectionActive = false; 304 305 private PowerManager.WakeLock mSuspendWakeLock; 306 307 /** 308 * Interval in milliseconds between polling for RSSI 309 * and linkspeed information 310 */ 311 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 312 313 /** 314 * Interval in milliseconds between receiving a disconnect event 315 * while connected to a good AP, and handling the disconnect proper 316 */ 317 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 318 319 /** 320 * Delay between supplicant restarts upon failure to establish connection 321 */ 322 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 323 324 /** 325 * Number of times we attempt to restart supplicant 326 */ 327 private static final int SUPPLICANT_RESTART_TRIES = 5; 328 329 private int mSupplicantRestartCount = 0; 330 /* Tracks sequence number on stop failure message */ 331 private int mSupplicantStopFailureToken = 0; 332 333 /** 334 * Tether state change notification time out 335 */ 336 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 337 338 /* Tracks sequence number on a tether notification time out */ 339 private int mTetherToken = 0; 340 341 /** 342 * Driver start time out. 343 */ 344 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 345 346 /* Tracks sequence number on a driver time out */ 347 private int mDriverStartToken = 0; 348 349 /** 350 * The link properties of the wifi interface. 351 * Do not modify this directly; use updateLinkProperties instead. 352 */ 353 private LinkProperties mLinkProperties; 354 355 /* Tracks sequence number on a periodic scan message */ 356 private int mPeriodicScanToken = 0; 357 358 // Wakelock held during wifi start/stop and driver load/unload 359 private PowerManager.WakeLock mWakeLock; 360 361 private Context mContext; 362 363 private final Object mDhcpResultsLock = new Object(); 364 private DhcpResults mDhcpResults; 365 private WifiInfo mWifiInfo; 366 private NetworkInfo mNetworkInfo; 367 private NetworkCapabilities mNetworkCapabilities; 368 private SupplicantStateTracker mSupplicantStateTracker; 369 private BaseDhcpStateMachine mDhcpStateMachine; 370 private boolean mDhcpActive = false; 371 372 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 373 374 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 375 376 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 377 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 378 379 // Roaming failure count 380 private int mRoamFailCount = 0; 381 382 // This is the BSSID we are trying to associate to, it can be set to "any" 383 // if we havent selected a BSSID for joining. 384 // if we havent selected a BSSID for joining. 385 // The BSSID we are associated to is found in mWifiInfo 386 private String mTargetRoamBSSID = "any"; 387 388 private long mLastDriverRoamAttempt = 0; 389 390 private WifiConfiguration targetWificonfiguration = null; 391 392 // Used as debug to indicate which configuration last was saved 393 private WifiConfiguration lastSavedConfigurationAttempt = null; 394 395 // Used as debug to indicate which configuration last was removed 396 private WifiConfiguration lastForgetConfigurationAttempt = null; 397 398 //Random used by softAP channel Selection 399 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 400 401 boolean isRoaming() { 402 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 403 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 404 } 405 406 public void autoRoamSetBSSID(int netId, String bssid) { 407 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 408 } 409 410 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 411 boolean ret = true; 412 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 413 if (bssid == null) bssid = "any"; 414 if (config == null) return false; // Nothing to do 415 416 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 417 return false; // We didnt change anything 418 } 419 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 420 // Changing to ANY 421 if (!mWifiConfigStore.roamOnAny) { 422 ret = false; // Nothing to do 423 } 424 } 425 if (VDBG) { 426 loge("autoRoamSetBSSID " + bssid 427 + " key=" + config.configKey()); 428 } 429 config.autoJoinBSSID = bssid; 430 mTargetRoamBSSID = bssid; 431 mWifiConfigStore.saveWifiConfigBSSID(config); 432 return ret; 433 } 434 435 /** 436 * Subset of link properties coming from netlink. 437 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 438 * and domains obtained from router advertisements (RFC 6106). 439 */ 440 private NetlinkTracker mNetlinkTracker; 441 442 private AlarmManager mAlarmManager; 443 private PendingIntent mScanIntent; 444 private PendingIntent mDriverStopIntent; 445 private PendingIntent mBatchedScanIntervalIntent; 446 447 /* Tracks current frequency mode */ 448 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 449 450 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 451 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 452 453 // Channel for sending replies. 454 private AsyncChannel mReplyChannel = new AsyncChannel(); 455 456 private WifiP2pServiceImpl mWifiP2pServiceImpl; 457 458 // Used to initiate a connection with WifiP2pService 459 private AsyncChannel mWifiP2pChannel; 460 private AsyncChannel mWifiApConfigChannel; 461 462 private WifiScanner mWifiScanner; 463 464 private int mConnectionRequests = 0; 465 private WifiNetworkFactory mNetworkFactory; 466 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 467 private WifiNetworkAgent mNetworkAgent; 468 469 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 470 // We should really persist that into the networkHistory.txt file, and read it back when 471 // WifiStateMachine starts up 472 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 473 474 // Used to filter out requests we couldn't possibly satisfy. 475 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 476 477 /* The base for wifi message types */ 478 static final int BASE = Protocol.BASE_WIFI; 479 /* Start the supplicant */ 480 static final int CMD_START_SUPPLICANT = BASE + 11; 481 /* Stop the supplicant */ 482 static final int CMD_STOP_SUPPLICANT = BASE + 12; 483 /* Start the driver */ 484 static final int CMD_START_DRIVER = BASE + 13; 485 /* Stop the driver */ 486 static final int CMD_STOP_DRIVER = BASE + 14; 487 /* Indicates Static IP succeeded */ 488 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 489 /* Indicates Static IP failed */ 490 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 491 /* Indicates supplicant stop failed */ 492 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 493 /* Delayed stop to avoid shutting down driver too quick*/ 494 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 495 /* A delayed message sent to start driver when it fail to come up */ 496 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 497 498 /* Start the soft access point */ 499 static final int CMD_START_AP = BASE + 21; 500 /* Indicates soft ap start succeeded */ 501 static final int CMD_START_AP_SUCCESS = BASE + 22; 502 /* Indicates soft ap start failed */ 503 static final int CMD_START_AP_FAILURE = BASE + 23; 504 /* Stop the soft access point */ 505 static final int CMD_STOP_AP = BASE + 24; 506 /* Set the soft access point configuration */ 507 static final int CMD_SET_AP_CONFIG = BASE + 25; 508 /* Soft access point configuration set completed */ 509 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 510 /* Request the soft access point configuration */ 511 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 512 /* Response to access point configuration request */ 513 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 514 /* Invoked when getting a tether state change notification */ 515 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 516 /* A delayed message sent to indicate tether state change failed to arrive */ 517 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 518 519 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 520 521 /* Supplicant commands */ 522 /* Is supplicant alive ? */ 523 static final int CMD_PING_SUPPLICANT = BASE + 51; 524 /* Add/update a network configuration */ 525 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 526 /* Delete a network */ 527 static final int CMD_REMOVE_NETWORK = BASE + 53; 528 /* Enable a network. The device will attempt a connection to the given network. */ 529 static final int CMD_ENABLE_NETWORK = BASE + 54; 530 /* Enable all networks */ 531 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 532 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 533 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 534 /* Clear the blacklist network list */ 535 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 536 /* Save configuration */ 537 static final int CMD_SAVE_CONFIG = BASE + 58; 538 /* Get configured networks */ 539 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 540 /* Get available frequencies */ 541 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 542 /* Get adaptors */ 543 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 544 /* Get configured networks with real preSharedKey */ 545 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 546 /* Get Link Layer Stats thru HAL */ 547 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 548 /* Supplicant commands after driver start*/ 549 /* Initiate a scan */ 550 static final int CMD_START_SCAN = BASE + 71; 551 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 552 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 553 /* Disconnect from a network */ 554 static final int CMD_DISCONNECT = BASE + 73; 555 /* Reconnect to a network */ 556 static final int CMD_RECONNECT = BASE + 74; 557 /* Reassociate to a network */ 558 static final int CMD_REASSOCIATE = BASE + 75; 559 /* Get Connection Statistis */ 560 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 561 562 /* Controls suspend mode optimizations 563 * 564 * When high perf mode is enabled, suspend mode optimizations are disabled 565 * 566 * When high perf mode is disabled, suspend mode optimizations are enabled 567 * 568 * Suspend mode optimizations include: 569 * - packet filtering 570 * - turn off roaming 571 * - DTIM wake up settings 572 */ 573 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 574 /* Set the country code */ 575 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 576 /* Enables RSSI poll */ 577 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 578 /* RSSI poll */ 579 static final int CMD_RSSI_POLL = BASE + 83; 580 /* Set up packet filtering */ 581 static final int CMD_START_PACKET_FILTERING = BASE + 84; 582 /* Clear packet filter */ 583 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 584 /* Enable suspend mode optimizations in the driver */ 585 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 586 /* Delayed NETWORK_DISCONNECT */ 587 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 588 /* When there are no saved networks, we do a periodic scan to notify user of 589 * an open network */ 590 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 591 /* Test network Disconnection NETWORK_DISCONNECT */ 592 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 593 private int testNetworkDisconnectCounter = 0; 594 595 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 596 static final int MULTICAST_V6 = 1; 597 static final int MULTICAST_V4 = 0; 598 599 /* Set the frequency band */ 600 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 601 /* Enable TDLS on a specific MAC address */ 602 static final int CMD_ENABLE_TDLS = BASE + 92; 603 /* DHCP/IP configuration watchdog */ 604 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 605 606 /** 607 * Make this timer 40 seconds, which is about the normal DHCP timeout. 608 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 609 * for more than 30 seconds. 610 */ 611 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 612 613 int obtainingIpWatchdogCount = 0; 614 615 /* Commands from/to the SupplicantStateTracker */ 616 /* Reset the supplicant state tracker */ 617 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 618 619 620 /** 621 * Watchdog for protecting against b/16823537 622 * Leave time for 4-ways handshake to succeed 623 */ 624 static final int ROAM_GUARD_TIMER_MSEC = 15000; 625 626 int roamWatchdogCount = 0; 627 /* Roam state watchdog */ 628 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 629 /* Screen change intent handling */ 630 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 631 632 int disconnectingWatchdogCount = 0; 633 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 634 635 /* Disconnecting state watchdog */ 636 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 637 638 /* Disable an ephemeral network */ 639 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 640 641 /* Get matching network */ 642 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 643 644 /* P2p commands */ 645 /* We are ok with no response here since we wont do much with it anyway */ 646 public static final int CMD_ENABLE_P2P = BASE + 131; 647 /* In order to shut down supplicant cleanly, we wait till p2p has 648 * been disabled */ 649 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 650 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 651 652 public static final int CMD_BOOT_COMPLETED = BASE + 134; 653 654 /* change the batch scan settings. 655 * arg1 = responsible UID 656 * arg2 = csph (channel scans per hour) 657 * obj = bundle with the new settings and the optional worksource 658 */ 659 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 660 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 661 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 662 663 /* We now have a valid IP configuration. */ 664 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 665 /* We no longer have a valid IP configuration. */ 666 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 667 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 668 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 669 670 /* Supplicant is trying to associate to a given BSSID */ 671 static final int CMD_TARGET_BSSID = BASE + 141; 672 673 /* Reload all networks and reconnect */ 674 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 675 676 static final int CMD_AUTO_CONNECT = BASE + 143; 677 678 static final int network_status_unwanted_disconnect = 0; 679 static final int network_status_unwanted_disable_autojoin = 1; 680 681 static final int CMD_UNWANTED_NETWORK = BASE + 144; 682 683 static final int CMD_AUTO_ROAM = BASE + 145; 684 685 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 686 687 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 688 689 static final int CMD_NETWORK_STATUS = BASE + 148; 690 691 static final int CMD_START_PNO = BASE + 149; /* used to restart PNO when it was 692 stopped due to association attempt */ 693 694 static final int CMD_STARTED_PNO_DBG = BASE + 150; /* used to log if PNO was started */ 695 696 static final int CMD_PNO_NETWORK_FOUND = BASE + 151; 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 * Supplicant scan interval in milliseconds. 735 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 736 * from the default config if the setting is not set 737 */ 738 private long mSupplicantScanIntervalMs; 739 740 /** 741 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 742 */ 743 private long lastFullBandConnectedTimeMilli; 744 745 /** 746 * time interval to the next full band scan we will perform for 747 * autojoin while connected with screen lit 748 */ 749 private long fullBandConnectedTimeIntervalMilli; 750 751 /** 752 * max time interval to the next full band scan we will perform for 753 * autojoin while connected with screen lit 754 * Max time is 5 minutes 755 */ 756 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 757 758 /** 759 * Minimum time interval between enabling all networks. 760 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 761 * due to enabling every time. We add a threshold to avoid this. 762 */ 763 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 764 private long mLastEnableAllNetworksTime; 765 766 int mRunningBeaconCount = 0; 767 768 /** 769 * Starting and shutting down driver too quick causes problems leading to driver 770 * being in a bad state. Delay driver stop. 771 */ 772 private final int mDriverStopDelayMs; 773 private int mDelayedStopCounter; 774 private boolean mInDelayedStop = false; 775 776 // there is a delay between StateMachine change country code and Supplicant change country code 777 // here save the current WifiStateMachine set country code 778 private volatile String mSetCountryCode = null; 779 780 // Supplicant doesn't like setting the same country code multiple times (it may drop 781 // currently connected network), so we save the current device set country code here to avoid 782 // redundency 783 private String mDriverSetCountryCode = null; 784 785 /* Default parent state */ 786 private State mDefaultState = new DefaultState(); 787 /* Temporary initial state */ 788 private State mInitialState = new InitialState(); 789 /* Driver loaded, waiting for supplicant to start */ 790 private State mSupplicantStartingState = new SupplicantStartingState(); 791 /* Driver loaded and supplicant ready */ 792 private State mSupplicantStartedState = new SupplicantStartedState(); 793 /* Waiting for supplicant to stop and monitor to exit */ 794 private State mSupplicantStoppingState = new SupplicantStoppingState(); 795 /* Driver start issued, waiting for completed event */ 796 private State mDriverStartingState = new DriverStartingState(); 797 /* Driver started */ 798 private State mDriverStartedState = new DriverStartedState(); 799 /* Wait until p2p is disabled 800 * This is a special state which is entered right after we exit out of DriverStartedState 801 * before transitioning to another state. 802 */ 803 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 804 /* Driver stopping */ 805 private State mDriverStoppingState = new DriverStoppingState(); 806 /* Driver stopped */ 807 private State mDriverStoppedState = new DriverStoppedState(); 808 /* Scan for networks, no connection will be established */ 809 private State mScanModeState = new ScanModeState(); 810 /* Connecting to an access point */ 811 private State mConnectModeState = new ConnectModeState(); 812 /* Connected at 802.11 (L2) level */ 813 private State mL2ConnectedState = new L2ConnectedState(); 814 /* fetching IP after connection to access point (assoc+auth complete) */ 815 private State mObtainingIpState = new ObtainingIpState(); 816 /* Waiting for link quality verification to be complete */ 817 private State mVerifyingLinkState = new VerifyingLinkState(); 818 /* Connected with IP addr */ 819 private State mConnectedState = new ConnectedState(); 820 /* Roaming */ 821 private State mRoamingState = new RoamingState(); 822 /* disconnect issued, waiting for network disconnect confirmation */ 823 private State mDisconnectingState = new DisconnectingState(); 824 /* Network is not connected, supplicant assoc+auth is not complete */ 825 private State mDisconnectedState = new DisconnectedState(); 826 /* Waiting for WPS to be completed*/ 827 private State mWpsRunningState = new WpsRunningState(); 828 829 /* Soft ap is starting up */ 830 private State mSoftApStartingState = new SoftApStartingState(); 831 /* Soft ap is running */ 832 private State mSoftApStartedState = new SoftApStartedState(); 833 /* Soft ap is running and we are waiting for tether notification */ 834 private State mTetheringState = new TetheringState(); 835 /* Soft ap is running and we are tethered through connectivity service */ 836 private State mTetheredState = new TetheredState(); 837 /* Waiting for untether confirmation before stopping soft Ap */ 838 private State mUntetheringState = new UntetheringState(); 839 840 841 842 private class WifiScanListener implements WifiScanner.ScanListener { 843 @Override 844 public void onSuccess() { 845 Log.e(TAG, "WifiScanListener onSuccess"); 846 }; 847 @Override 848 public void onFailure(int reason, String description) { 849 Log.e(TAG, "WifiScanListener onFailure"); 850 }; 851 @Override 852 public void onPeriodChanged(int periodInMs) { 853 Log.e(TAG, "WifiScanListener onPeriodChanged period=" + periodInMs); 854 } 855 @Override 856 public void onResults(ScanResult[] results) { 857 Log.e(TAG, "WifiScanListener onResults" + results.length); 858 } 859 @Override 860 public void onResults(WifiScanner.ScanData[] results) { 861 Log.e(TAG, "WifiScanListener onResults2 " + results.length); 862 } 863 @Override 864 public void onFullResult(ScanResult fullScanResult) { 865 Log.e(TAG, "WifiScanListener onFullResult " + fullScanResult.toString()); 866 } 867 868 WifiScanListener() {} 869 } 870 871 WifiScanListener mWifiScanListener = new WifiScanListener(); 872 873 874 private class TetherStateChange { 875 ArrayList<String> available; 876 ArrayList<String> active; 877 878 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 879 available = av; 880 active = ac; 881 } 882 } 883 884 public static class SimAuthRequestData { 885 int networkId; 886 int protocol; 887 String ssid; 888 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 889 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 890 String[] data; 891 } 892 893 /** 894 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 895 * {@link WifiManager#WIFI_STATE_DISABLING}, 896 * {@link WifiManager#WIFI_STATE_ENABLED}, 897 * {@link WifiManager#WIFI_STATE_ENABLING}, 898 * {@link WifiManager#WIFI_STATE_UNKNOWN} 899 */ 900 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 901 902 /** 903 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 904 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 905 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 906 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 907 * {@link WifiManager#WIFI_AP_STATE_FAILED} 908 */ 909 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 910 911 private static final int SCAN_REQUEST = 0; 912 private static final String ACTION_START_SCAN = 913 "com.android.server.WifiManager.action.START_SCAN"; 914 915 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 916 private static final int DRIVER_STOP_REQUEST = 0; 917 private static final String ACTION_DELAYED_DRIVER_STOP = 918 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 919 920 private static final String ACTION_REFRESH_BATCHED_SCAN = 921 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 922 /** 923 * Keep track of whether WIFI is running. 924 */ 925 private boolean mIsRunning = false; 926 927 /** 928 * Keep track of whether we last told the battery stats we had started. 929 */ 930 private boolean mReportedRunning = false; 931 932 /** 933 * Most recently set source of starting WIFI. 934 */ 935 private final WorkSource mRunningWifiUids = new WorkSource(); 936 937 /** 938 * The last reported UIDs that were responsible for starting WIFI. 939 */ 940 private final WorkSource mLastRunningWifiUids = new WorkSource(); 941 942 private final IBatteryStats mBatteryStats; 943 944 private BatchedScanSettings mBatchedScanSettings = null; 945 946 /** 947 * Track the worksource/cost of the current settings and track what's been noted 948 * to the battery stats, so we can mark the end of the previous when changing. 949 */ 950 private WorkSource mBatchedScanWorkSource = null; 951 private int mBatchedScanCsph = 0; 952 private WorkSource mNotedBatchedScanWorkSource = null; 953 private int mNotedBatchedScanCsph = 0; 954 955 private String mTcpBufferSizes = null; 956 957 // Used for debug and stats gathering 958 private static int sScanAlarmIntentCount = 0; 959 960 final static int frameworkMinScanIntervalSaneValue = 10000; 961 962 public WifiStateMachine(Context context, String wlanInterface, 963 WifiTrafficPoller trafficPoller) { 964 super("WifiStateMachine"); 965 mContext = context; 966 mSetCountryCode = Settings.Global.getString( 967 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 968 mInterfaceName = wlanInterface; 969 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 970 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 971 BatteryStats.SERVICE_NAME)); 972 973 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 974 mNwService = INetworkManagementService.Stub.asInterface(b); 975 976 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 977 PackageManager.FEATURE_WIFI_DIRECT); 978 979 mWifiNative = new WifiNative(mInterfaceName); 980 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 981 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 982 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 983 mWifiMonitor = new WifiMonitor(this, mWifiNative); 984 mWifiLogger = new WifiLogger(); 985 986 mWifiInfo = new WifiInfo(); 987 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 988 getHandler()); 989 mLinkProperties = new LinkProperties(); 990 991 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 992 mWifiP2pServiceImpl = (WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1); 993 994 mNetworkInfo.setIsAvailable(false); 995 mLastBssid = null; 996 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 997 mLastSignalLevel = -1; 998 999 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1000 public void update() { 1001 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1002 } 1003 }); 1004 try { 1005 mNwService.registerObserver(mNetlinkTracker); 1006 } catch (RemoteException e) { 1007 loge("Couldn't register netlink tracker: " + e.toString()); 1008 } 1009 1010 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1011 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1012 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 1013 1014 // Make sure the interval is not configured less than 10 seconds 1015 int period = mContext.getResources().getInteger( 1016 R.integer.config_wifi_framework_scan_interval); 1017 if (period < frameworkMinScanIntervalSaneValue) { 1018 period = frameworkMinScanIntervalSaneValue; 1019 } 1020 mDefaultFrameworkScanIntervalMs = period; 1021 mDriverStopDelayMs = mContext.getResources().getInteger( 1022 R.integer.config_wifi_driver_stop_delay); 1023 1024 mBackgroundScanSupported = mContext.getResources().getBoolean( 1025 R.bool.config_wifi_background_scan_support); 1026 1027 mPrimaryDeviceType = mContext.getResources().getString( 1028 R.string.config_wifi_p2p_device_type); 1029 1030 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1031 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1032 1033 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1034 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1035 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1036 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1037 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1038 // TODO - needs to be a bit more dynamic 1039 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1040 1041 mContext.registerReceiver( 1042 new BroadcastReceiver() { 1043 @Override 1044 public void onReceive(Context context, Intent intent) { 1045 ArrayList<String> available = intent.getStringArrayListExtra( 1046 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1047 ArrayList<String> active = intent.getStringArrayListExtra( 1048 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1049 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1050 } 1051 }, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1052 1053 mContext.registerReceiver( 1054 new BroadcastReceiver() { 1055 @Override 1056 public void onReceive(Context context, Intent intent) { 1057 sScanAlarmIntentCount++; // Used for debug only 1058 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1059 if (VDBG) 1060 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1061 } 1062 }, 1063 new IntentFilter(ACTION_START_SCAN)); 1064 1065 IntentFilter filter = new IntentFilter(); 1066 filter.addAction(Intent.ACTION_SCREEN_ON); 1067 filter.addAction(Intent.ACTION_SCREEN_OFF); 1068 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 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 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 1080 startNextBatchedScanAsync(); 1081 } 1082 } 1083 }, filter); 1084 1085 mContext.registerReceiver( 1086 new BroadcastReceiver() { 1087 @Override 1088 public void onReceive(Context context, Intent intent) { 1089 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1090 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1091 } 1092 }, 1093 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1094 1095 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1096 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1097 new ContentObserver(getHandler()) { 1098 @Override 1099 public void onChange(boolean selfChange) { 1100 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1101 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1102 } 1103 }); 1104 1105 mContext.registerReceiver( 1106 new BroadcastReceiver() { 1107 @Override 1108 public void onReceive(Context context, Intent intent) { 1109 sendMessage(CMD_BOOT_COMPLETED); 1110 } 1111 }, 1112 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1113 1114 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1115 1116 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 1117 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1118 1119 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1120 mSuspendWakeLock.setReferenceCounted(false); 1121 1122 mTcpBufferSizes = mContext.getResources().getString( 1123 com.android.internal.R.string.config_wifi_tcp_buffers); 1124 1125 addState(mDefaultState); 1126 addState(mInitialState, mDefaultState); 1127 addState(mSupplicantStartingState, mDefaultState); 1128 addState(mSupplicantStartedState, mDefaultState); 1129 addState(mDriverStartingState, mSupplicantStartedState); 1130 addState(mDriverStartedState, mSupplicantStartedState); 1131 addState(mScanModeState, mDriverStartedState); 1132 addState(mConnectModeState, mDriverStartedState); 1133 addState(mL2ConnectedState, mConnectModeState); 1134 addState(mObtainingIpState, mL2ConnectedState); 1135 addState(mVerifyingLinkState, mL2ConnectedState); 1136 addState(mConnectedState, mL2ConnectedState); 1137 addState(mRoamingState, mL2ConnectedState); 1138 addState(mDisconnectingState, mConnectModeState); 1139 addState(mDisconnectedState, mConnectModeState); 1140 addState(mWpsRunningState, mConnectModeState); 1141 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1142 addState(mDriverStoppingState, mSupplicantStartedState); 1143 addState(mDriverStoppedState, mSupplicantStartedState); 1144 addState(mSupplicantStoppingState, mDefaultState); 1145 addState(mSoftApStartingState, mDefaultState); 1146 addState(mSoftApStartedState, mDefaultState); 1147 addState(mTetheringState, mSoftApStartedState); 1148 addState(mTetheredState, mSoftApStartedState); 1149 addState(mUntetheringState, mSoftApStartedState); 1150 1151 setInitialState(mInitialState); 1152 1153 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1154 setLogOnlyTransitions(false); 1155 if (VDBG) setDbg(true); 1156 1157 //start the state machine 1158 start(); 1159 1160 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1161 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1162 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1163 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1164 } 1165 1166 1167 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1168 Intent intent = new Intent(action, null); 1169 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1170 intent.setPackage(this.getClass().getPackage().getName()); 1171 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1172 } 1173 1174 private int mVerboseLoggingLevel = 0; 1175 1176 int getVerboseLoggingLevel() { 1177 return mVerboseLoggingLevel; 1178 } 1179 1180 void enableVerboseLogging(int verbose) { 1181 mVerboseLoggingLevel = verbose; 1182 if (verbose > 0) { 1183 DBG = true; 1184 VDBG = true; 1185 PDBG = true; 1186 mLogMessages = true; 1187 mWifiNative.setSupplicantLogLevel("DEBUG"); 1188 } else { 1189 DBG = false; 1190 VDBG = false; 1191 PDBG = false; 1192 mLogMessages = false; 1193 mWifiNative.setSupplicantLogLevel("INFO"); 1194 } 1195 mWifiAutoJoinController.enableVerboseLogging(verbose); 1196 mWifiMonitor.enableVerboseLogging(verbose); 1197 mWifiNative.enableVerboseLogging(verbose); 1198 mWifiConfigStore.enableVerboseLogging(verbose); 1199 mSupplicantStateTracker.enableVerboseLogging(verbose); 1200 } 1201 1202 private int mAggressiveHandover = 0; 1203 1204 int getAggressiveHandover() { 1205 return mAggressiveHandover; 1206 } 1207 1208 void enableAggressiveHandover(int enabled) { 1209 mAggressiveHandover = enabled; 1210 } 1211 1212 public void clearANQPCache() { 1213 mWifiConfigStore.clearANQPCache(); 1214 } 1215 1216 public void setAllowScansWithTraffic(int enabled) { 1217 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1218 } 1219 1220 public int getAllowScansWithTraffic() { 1221 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1222 } 1223 1224 public void setAllowScansWhileAssociated(boolean enabled) { 1225 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled); 1226 } 1227 1228 public boolean getAllowScansWhileAssociated() { 1229 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 1230 } 1231 1232 /* 1233 * 1234 * Framework scan control 1235 */ 1236 1237 private boolean mAlarmEnabled = false; 1238 1239 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1240 1241 private void setScanAlarm(boolean enabled) { 1242 if (PDBG) { 1243 loge("setScanAlarm " + enabled 1244 + " period " + mDefaultFrameworkScanIntervalMs 1245 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1246 } 1247 if (mBackgroundScanSupported == false) { 1248 // Scan alarm is only used for background scans if they are not 1249 // offloaded to the wifi chipset, hence enable the scan alarm 1250 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1251 enabled = true; 1252 } 1253 1254 if (enabled == mAlarmEnabled) return; 1255 if (enabled) { 1256 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1257 /* going to wake up the host processor to look for access points */ 1258 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1259 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1260 mScanIntent); 1261 mAlarmEnabled = true; 1262 } else { 1263 mAlarmManager.cancel(mScanIntent); 1264 mAlarmEnabled = false; 1265 } 1266 } 1267 1268 private void cancelDelayedScan() { 1269 mDelayedScanCounter.incrementAndGet(); 1270 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1271 } 1272 1273 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1274 ScanSettings settings, WorkSource workSource) { 1275 1276 if (counter != mDelayedScanCounter.get()) { 1277 return false; 1278 } 1279 if (restart) 1280 startDelayedScan(milli, settings, workSource); 1281 return true; 1282 } 1283 1284 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1285 if (milli <= 0) return; 1286 /** 1287 * The cases where the scan alarm should be run are : 1288 * - DisconnectedState && screenOn => used delayed timer 1289 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1290 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1291 * - ConnectedState && screenOn => used delayed timer 1292 */ 1293 1294 mDelayedScanCounter.incrementAndGet(); 1295 if (mScreenOn && 1296 (getCurrentState() == mDisconnectedState 1297 || getCurrentState() == mConnectedState)) { 1298 Bundle bundle = new Bundle(); 1299 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1300 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1301 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1302 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1303 mDelayedScanCounter.get(), bundle, milli); 1304 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1305 } else if (mBackgroundScanSupported == false 1306 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1307 setScanAlarm(true); 1308 if (DBG) loge("startDelayedScan start scan alarm -> " 1309 + mDelayedScanCounter + " milli " + milli); 1310 } else { 1311 if (DBG) loge("startDelayedScan unhandled -> " 1312 + mDelayedScanCounter + " milli " + milli); 1313 } 1314 } 1315 1316 private boolean setRandomMacOui() { 1317 String oui = mContext.getResources().getString( 1318 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1319 String[] ouiParts = oui.split("-"); 1320 byte[] ouiBytes = new byte[3]; 1321 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1322 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1323 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1324 1325 logd("Setting OUI to " + oui); 1326 return mWifiNative.setScanningMacOui(ouiBytes); 1327 } 1328 1329 /** 1330 * ****************************************************** 1331 * Methods exposed for public use 1332 * ****************************************************** 1333 */ 1334 1335 public Messenger getMessenger() { 1336 return new Messenger(getHandler()); 1337 } 1338 1339 public WifiMonitor getWifiMonitor() { 1340 return mWifiMonitor; 1341 } 1342 1343 /** 1344 * TODO: doc 1345 */ 1346 public boolean syncPingSupplicant(AsyncChannel channel) { 1347 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1348 boolean result = (resultMsg.arg1 != FAILURE); 1349 resultMsg.recycle(); 1350 return result; 1351 } 1352 1353 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1354 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1355 List<WifiChannel> list = null; 1356 if (resultMsg.obj != null) { 1357 list = new ArrayList<WifiChannel>(); 1358 String freqs = (String) resultMsg.obj; 1359 String[] lines = freqs.split("\n"); 1360 for (String line : lines) 1361 if (line.contains("MHz")) { 1362 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1363 WifiChannel c = new WifiChannel(); 1364 String[] prop = line.split(" "); 1365 if (prop.length < 5) continue; 1366 try { 1367 c.channelNum = Integer.parseInt(prop[1]); 1368 c.freqMHz = Integer.parseInt(prop[3]); 1369 } catch (NumberFormatException e) { 1370 } 1371 c.isDFS = line.contains("(DFS)"); 1372 list.add(c); 1373 } else if (line.contains("Mode[B] Channels:")) { 1374 // B channels are the same as G channels, skipped 1375 break; 1376 } 1377 } 1378 resultMsg.recycle(); 1379 return (list != null && list.size() > 0) ? list : null; 1380 } 1381 1382 /** 1383 * When settings allowing making use of untrusted networks change, trigger a scan 1384 * so as to kick of autojoin. 1385 */ 1386 public void startScanForUntrustedSettingChange() { 1387 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1388 } 1389 1390 /** 1391 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1392 * given to callingUid. 1393 * 1394 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1395 * workSource is specified. 1396 * @param workSource If not null, blame is given to workSource. 1397 * @param settings Scan settings, see {@link ScanSettings}. 1398 */ 1399 public void startScan(int callingUid, int scanCounter, 1400 ScanSettings settings, WorkSource workSource) { 1401 Bundle bundle = new Bundle(); 1402 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1403 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1404 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1405 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1406 } 1407 1408 /** 1409 * start or stop batched scanning using the given settings 1410 */ 1411 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1412 WorkSource workSource) { 1413 Bundle bundle = new Bundle(); 1414 bundle.putParcelable(BATCHED_SETTING, settings); 1415 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1416 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1417 } 1418 1419 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1420 synchronized (mBatchedScanResults) { 1421 List<BatchedScanResult> batchedScanList = 1422 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1423 for (BatchedScanResult result : mBatchedScanResults) { 1424 batchedScanList.add(new BatchedScanResult(result)); 1425 } 1426 return batchedScanList; 1427 } 1428 } 1429 1430 public void requestBatchedScanPoll() { 1431 sendMessage(CMD_POLL_BATCHED_SCAN); 1432 } 1433 1434 private void startBatchedScan() { 1435 if (mBatchedScanSettings == null) return; 1436 1437 if (mDhcpActive) { 1438 if (DBG) log("not starting Batched Scans due to DHCP"); 1439 return; 1440 } 1441 1442 // first grab any existing data 1443 retrieveBatchedScanData(); 1444 1445 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1446 1447 1448 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1449 1450 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1451 try { 1452 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1453 setNextBatchedAlarm(mExpectedBatchedScans); 1454 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1455 } catch (NumberFormatException e) { 1456 stopBatchedScan(); 1457 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1458 } 1459 } 1460 1461 // called from BroadcastListener 1462 private void startNextBatchedScanAsync() { 1463 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1464 } 1465 1466 private void startNextBatchedScan() { 1467 // first grab any existing data 1468 retrieveBatchedScanData(); 1469 1470 setNextBatchedAlarm(mExpectedBatchedScans); 1471 } 1472 1473 private void handleBatchedScanPollRequest() { 1474 if (DBG) { 1475 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1476 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1477 mBatchedScanSettings); 1478 } 1479 // if there is no appropriate PollTime that's because we either aren't 1480 // batching or we've already set a time for a poll request 1481 if (mBatchedScanMinPollTime == 0) return; 1482 if (mBatchedScanSettings == null) return; 1483 1484 long now = System.currentTimeMillis(); 1485 1486 if (now > mBatchedScanMinPollTime) { 1487 // do the poll and reset our timers 1488 startNextBatchedScan(); 1489 } else { 1490 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1491 mBatchedScanIntervalIntent); 1492 mBatchedScanMinPollTime = 0; 1493 } 1494 } 1495 1496 // return true if new/different 1497 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1498 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1499 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1500 1501 if (DBG) { 1502 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1503 ", worksource=" + responsibleWorkSource); 1504 } 1505 if (settings != null) { 1506 if (settings.equals(mBatchedScanSettings)) return false; 1507 } else { 1508 if (mBatchedScanSettings == null) return false; 1509 } 1510 mBatchedScanSettings = settings; 1511 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1512 mBatchedScanWorkSource = responsibleWorkSource; 1513 mBatchedScanCsph = csph; 1514 return true; 1515 } 1516 1517 private void stopBatchedScan() { 1518 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1519 retrieveBatchedScanData(); 1520 mWifiNative.setBatchedScanSettings(null); 1521 noteBatchedScanStop(); 1522 } 1523 1524 private void setNextBatchedAlarm(int scansExpected) { 1525 1526 if (mBatchedScanSettings == null || scansExpected < 1) return; 1527 1528 mBatchedScanMinPollTime = System.currentTimeMillis() + 1529 mBatchedScanSettings.scanIntervalSec * 1000; 1530 1531 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1532 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1533 } 1534 1535 int secToFull = mBatchedScanSettings.scanIntervalSec; 1536 secToFull *= scansExpected; 1537 1538 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1539 if (debugPeriod > 0) secToFull = debugPeriod; 1540 1541 // set the alarm to do the next poll. We set it a little short as we'd rather 1542 // wake up wearly than miss a scan due to buffer overflow 1543 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1544 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1545 mBatchedScanIntervalIntent); 1546 } 1547 1548 /** 1549 * Start reading new scan data 1550 * Data comes in as: 1551 * "scancount=5\n" 1552 * "nextcount=5\n" 1553 * "apcount=3\n" 1554 * "trunc\n" (optional) 1555 * "bssid=...\n" 1556 * "ssid=...\n" 1557 * "freq=...\n" (in Mhz) 1558 * "level=...\n" 1559 * "dist=...\n" (in cm) 1560 * "distsd=...\n" (standard deviation, in cm) 1561 * "====" 1562 * "bssid=...\n" 1563 * etc 1564 * "====" 1565 * "bssid=...\n" 1566 * etc 1567 * "%%%%" 1568 * "apcount=2\n" 1569 * "bssid=...\n" 1570 * etc 1571 * "%%%% 1572 * etc 1573 * "----" 1574 */ 1575 private final static boolean DEBUG_PARSE = false; 1576 1577 private void retrieveBatchedScanData() { 1578 String rawData = mWifiNative.getBatchedScanResults(); 1579 if (DEBUG_PARSE) log("rawData = " + rawData); 1580 mBatchedScanMinPollTime = 0; 1581 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1582 loge("Unexpected BatchedScanResults :" + rawData); 1583 return; 1584 } 1585 1586 int scanCount = 0; 1587 final String END_OF_BATCHES = "----"; 1588 final String SCANCOUNT = "scancount="; 1589 final String TRUNCATED = "trunc"; 1590 final String AGE = "age="; 1591 final String DIST = "dist="; 1592 final String DISTSD = "distSd="; 1593 1594 String splitData[] = rawData.split("\n"); 1595 int n = 0; 1596 if (splitData[n].startsWith(SCANCOUNT)) { 1597 try { 1598 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1599 } catch (NumberFormatException e) { 1600 loge("scancount parseInt Exception from " + splitData[n]); 1601 } 1602 } else log("scancount not found"); 1603 if (scanCount == 0) { 1604 loge("scanCount==0 - aborting"); 1605 return; 1606 } 1607 1608 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1609 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1610 1611 synchronized (mBatchedScanResults) { 1612 mBatchedScanResults.clear(); 1613 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1614 1615 String bssid = null; 1616 WifiSsid wifiSsid = null; 1617 int level = 0; 1618 int freq = 0; 1619 int dist, distSd; 1620 long tsf = 0; 1621 dist = distSd = ScanResult.UNSPECIFIED; 1622 final long now = SystemClock.elapsedRealtime(); 1623 final int bssidStrLen = BSSID_STR.length(); 1624 1625 while (true) { 1626 while (n < splitData.length) { 1627 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1628 if (splitData[n].equals(END_OF_BATCHES)) { 1629 if (n + 1 != splitData.length) { 1630 loge("didn't consume " + (splitData.length - n)); 1631 } 1632 if (mBatchedScanResults.size() > 0) { 1633 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1634 } 1635 logd("retrieveBatchedScanResults X"); 1636 return; 1637 } 1638 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1639 if (bssid != null) { 1640 batchedScanResult.scanResults.add(new ScanResult( 1641 wifiSsid, bssid, null, 1642 level, freq, tsf, dist, distSd)); 1643 wifiSsid = null; 1644 bssid = null; 1645 level = 0; 1646 freq = 0; 1647 tsf = 0; 1648 dist = distSd = ScanResult.UNSPECIFIED; 1649 } 1650 if (splitData[n].equals(END_STR)) { 1651 if (batchedScanResult.scanResults.size() != 0) { 1652 mBatchedScanResults.add(batchedScanResult); 1653 batchedScanResult = new BatchedScanResult(); 1654 } else { 1655 logd("Found empty batch"); 1656 } 1657 } 1658 } else if (splitData[n].equals(TRUNCATED)) { 1659 batchedScanResult.truncated = true; 1660 } else if (splitData[n].startsWith(BSSID_STR)) { 1661 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1662 splitData[n].length() - bssidStrLen); 1663 } else if (splitData[n].startsWith(FREQ_STR)) { 1664 try { 1665 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1666 } catch (NumberFormatException e) { 1667 loge("Invalid freqency: " + splitData[n]); 1668 freq = 0; 1669 } 1670 } else if (splitData[n].startsWith(AGE)) { 1671 try { 1672 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1673 tsf *= 1000; // convert mS -> uS 1674 } catch (NumberFormatException e) { 1675 loge("Invalid timestamp: " + splitData[n]); 1676 tsf = 0; 1677 } 1678 } else if (splitData[n].startsWith(SSID_STR)) { 1679 wifiSsid = WifiSsid.createFromAsciiEncoded( 1680 splitData[n].substring(SSID_STR.length())); 1681 } else if (splitData[n].startsWith(LEVEL_STR)) { 1682 try { 1683 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1684 if (level > 0) level -= 256; 1685 } catch (NumberFormatException e) { 1686 loge("Invalid level: " + splitData[n]); 1687 level = 0; 1688 } 1689 } else if (splitData[n].startsWith(DIST)) { 1690 try { 1691 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1692 } catch (NumberFormatException e) { 1693 loge("Invalid distance: " + splitData[n]); 1694 dist = ScanResult.UNSPECIFIED; 1695 } 1696 } else if (splitData[n].startsWith(DISTSD)) { 1697 try { 1698 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1699 } catch (NumberFormatException e) { 1700 loge("Invalid distanceSd: " + splitData[n]); 1701 distSd = ScanResult.UNSPECIFIED; 1702 } 1703 } else { 1704 loge("Unable to parse batched scan result line: " + splitData[n]); 1705 } 1706 n++; 1707 } 1708 rawData = mWifiNative.getBatchedScanResults(); 1709 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1710 if (rawData == null) { 1711 loge("Unexpected null BatchedScanResults"); 1712 return; 1713 } 1714 splitData = rawData.split("\n"); 1715 if (splitData.length == 0 || splitData[0].equals("ok")) { 1716 loge("batch scan results just ended!"); 1717 if (mBatchedScanResults.size() > 0) { 1718 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1719 } 1720 return; 1721 } 1722 n = 0; 1723 } 1724 } 1725 } 1726 1727 private long mDisconnectedTimeStamp = 0; 1728 1729 public long getDisconnectedTimeMilli() { 1730 if (getCurrentState() == mDisconnectedState 1731 && mDisconnectedTimeStamp != 0) { 1732 long now_ms = System.currentTimeMillis(); 1733 return now_ms - mDisconnectedTimeStamp; 1734 } 1735 return 0; 1736 } 1737 1738 // Keeping track of scan requests 1739 private long lastStartScanTimeStamp = 0; 1740 private long lastScanDuration = 0; 1741 // Last connect attempt is used to prevent scan requests: 1742 // - for a period of 10 seconds after attempting to connect 1743 private long lastConnectAttempt = 0; 1744 private String lastScanFreqs = null; 1745 1746 // For debugging, keep track of last message status handling 1747 // TODO, find an equivalent mechanism as part of parent class 1748 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1749 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1750 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1751 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1752 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1753 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1754 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1755 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1756 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1757 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1758 1759 private int messageHandlingStatus = 0; 1760 1761 //TODO: this is used only to track connection attempts, however the link state and packet per 1762 //TODO: second logic should be folded into that 1763 private boolean checkOrDeferScanAllowed(Message msg) { 1764 long now = System.currentTimeMillis(); 1765 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1766 Message dmsg = Message.obtain(msg); 1767 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1768 return false; 1769 } 1770 return true; 1771 } 1772 1773 private int mOnTime = 0; 1774 private int mTxTime = 0; 1775 private int mRxTime = 0; 1776 private int mOnTimeStartScan = 0; 1777 private int mTxTimeStartScan = 0; 1778 private int mRxTimeStartScan = 0; 1779 private int mOnTimeScan = 0; 1780 private int mTxTimeScan = 0; 1781 private int mRxTimeScan = 0; 1782 private int mOnTimeThisScan = 0; 1783 private int mTxTimeThisScan = 0; 1784 private int mRxTimeThisScan = 0; 1785 1786 private int mOnTimeScreenStateChange = 0; 1787 private int mOnTimeAtLastReport = 0; 1788 private long lastOntimeReportTimeStamp = 0; 1789 private long lastScreenStateChangeTimeStamp = 0; 1790 private int mOnTimeLastReport = 0; 1791 private int mTxTimeLastReport = 0; 1792 private int mRxTimeLastReport = 0; 1793 1794 private long lastLinkLayerStatsUpdate = 0; 1795 1796 String reportOnTime() { 1797 long now = System.currentTimeMillis(); 1798 StringBuilder sb = new StringBuilder(); 1799 // Report stats since last report 1800 int on = mOnTime - mOnTimeLastReport; 1801 mOnTimeLastReport = mOnTime; 1802 int tx = mTxTime - mTxTimeLastReport; 1803 mTxTimeLastReport = mTxTime; 1804 int rx = mRxTime - mRxTimeLastReport; 1805 mRxTimeLastReport = mRxTime; 1806 int period = (int) (now - lastOntimeReportTimeStamp); 1807 lastOntimeReportTimeStamp = now; 1808 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1809 // Report stats since Screen State Changed 1810 on = mOnTime - mOnTimeScreenStateChange; 1811 period = (int) (now - lastScreenStateChangeTimeStamp); 1812 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1813 return sb.toString(); 1814 } 1815 1816 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1817 WifiLinkLayerStats stats = null; 1818 if (mWifiLinkLayerStatsSupported > 0) { 1819 String name = "wlan0"; 1820 stats = mWifiNative.getWifiLinkLayerStats(name); 1821 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1822 mWifiLinkLayerStatsSupported -= 1; 1823 } else if (stats != null) { 1824 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1825 mOnTime = stats.on_time; 1826 mTxTime = stats.tx_time; 1827 mRxTime = stats.rx_time; 1828 mRunningBeaconCount = stats.beacon_rx; 1829 if (dbg) { 1830 loge(stats.toString()); 1831 } 1832 } 1833 } 1834 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1835 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1836 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1837 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1838 } else { 1839 mWifiInfo.updatePacketRates(stats); 1840 } 1841 return stats; 1842 } 1843 1844 void startRadioScanStats() { 1845 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1846 if (stats != null) { 1847 mOnTimeStartScan = stats.on_time; 1848 mTxTimeStartScan = stats.tx_time; 1849 mRxTimeStartScan = stats.rx_time; 1850 mOnTime = stats.on_time; 1851 mTxTime = stats.tx_time; 1852 mRxTime = stats.rx_time; 1853 } 1854 } 1855 1856 void closeRadioScanStats() { 1857 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1858 if (stats != null) { 1859 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1860 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1861 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1862 mOnTimeScan += mOnTimeThisScan; 1863 mTxTimeScan += mTxTimeThisScan; 1864 mRxTimeScan += mRxTimeThisScan; 1865 } 1866 } 1867 1868 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1869 private void noteScanStart(int callingUid, WorkSource workSource) { 1870 long now = System.currentTimeMillis(); 1871 lastStartScanTimeStamp = now; 1872 lastScanDuration = 0; 1873 if (DBG) { 1874 String ts = String.format("[%,d ms]", now); 1875 if (workSource != null) { 1876 loge(ts + " noteScanStart" + workSource.toString() 1877 + " uid " + Integer.toString(callingUid)); 1878 } else { 1879 loge(ts + " noteScanstart no scan source" 1880 + " uid " + Integer.toString(callingUid)); 1881 } 1882 } 1883 startRadioScanStats(); 1884 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1885 && callingUid != SCAN_ALARM_SOURCE) 1886 || workSource != null)) { 1887 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1888 try { 1889 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1890 } catch (RemoteException e) { 1891 log(e.toString()); 1892 } 1893 } 1894 } 1895 1896 private void noteScanEnd() { 1897 long now = System.currentTimeMillis(); 1898 if (lastStartScanTimeStamp != 0) { 1899 lastScanDuration = now - lastStartScanTimeStamp; 1900 } 1901 lastStartScanTimeStamp = 0; 1902 if (DBG) { 1903 String ts = String.format("[%,d ms]", now); 1904 if (mScanWorkSource != null) 1905 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1906 + " onTime=" + mOnTimeThisScan); 1907 else 1908 loge(ts + " noteScanEnd no scan source" 1909 + " onTime=" + mOnTimeThisScan); 1910 } 1911 if (mScanWorkSource != null) { 1912 try { 1913 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1914 } catch (RemoteException e) { 1915 log(e.toString()); 1916 } finally { 1917 mScanWorkSource = null; 1918 } 1919 } 1920 } 1921 1922 private void noteBatchedScanStart() { 1923 if (PDBG) loge("noteBatchedScanstart()"); 1924 // note the end of a previous scan set 1925 if (mNotedBatchedScanWorkSource != null && 1926 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1927 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1928 try { 1929 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1930 } catch (RemoteException e) { 1931 log(e.toString()); 1932 } finally { 1933 mNotedBatchedScanWorkSource = null; 1934 mNotedBatchedScanCsph = 0; 1935 } 1936 } 1937 // note the start of the new 1938 try { 1939 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1940 mBatchedScanCsph); 1941 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1942 mNotedBatchedScanCsph = mBatchedScanCsph; 1943 } catch (RemoteException e) { 1944 log(e.toString()); 1945 } 1946 } 1947 1948 private void noteBatchedScanStop() { 1949 if (PDBG) loge("noteBatchedScanstop()"); 1950 1951 if (mNotedBatchedScanWorkSource != null) { 1952 try { 1953 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1954 } catch (RemoteException e) { 1955 log(e.toString()); 1956 } finally { 1957 mNotedBatchedScanWorkSource = null; 1958 mNotedBatchedScanCsph = 0; 1959 } 1960 } 1961 } 1962 1963 private void handleScanRequest(int type, Message message) { 1964 ScanSettings settings = null; 1965 WorkSource workSource = null; 1966 1967 // unbundle parameters 1968 Bundle bundle = (Bundle) message.obj; 1969 1970 if (bundle != null) { 1971 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1972 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1973 } 1974 1975 // parse scan settings 1976 String freqs = null; 1977 if (settings != null && settings.channelSet != null) { 1978 StringBuilder sb = new StringBuilder(); 1979 boolean first = true; 1980 for (WifiChannel channel : settings.channelSet) { 1981 if (!first) sb.append(','); 1982 else first = false; 1983 sb.append(channel.freqMHz); 1984 } 1985 freqs = sb.toString(); 1986 } 1987 1988 // call wifi native to start the scan 1989 if (startScanNative(type, freqs)) { 1990 // only count battery consumption if scan request is accepted 1991 noteScanStart(message.arg1, workSource); 1992 // a full scan covers everything, clearing scan request buffer 1993 if (freqs == null) 1994 mBufferedScanMsg.clear(); 1995 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1996 if (workSource != null) { 1997 // External worksource was passed along the scan request, 1998 // hence always send a broadcast 1999 mSendScanResultsBroadcast = true; 2000 } 2001 return; 2002 } 2003 2004 // if reach here, scan request is rejected 2005 2006 if (!mIsScanOngoing) { 2007 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 2008 2009 // discard this request and pop up the next one 2010 if (mBufferedScanMsg.size() > 0) { 2011 sendMessage(mBufferedScanMsg.remove()); 2012 } 2013 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2014 } else if (!mIsFullScanOngoing) { 2015 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2016 // buffer the scan request to make sure specified channels will be scanned eventually 2017 if (freqs == null) 2018 mBufferedScanMsg.clear(); 2019 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2020 Message msg = obtainMessage(CMD_START_SCAN, 2021 message.arg1, message.arg2, bundle); 2022 mBufferedScanMsg.add(msg); 2023 } else { 2024 // if too many requests in buffer, combine them into a single full scan 2025 bundle = new Bundle(); 2026 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2027 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2028 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2029 mBufferedScanMsg.clear(); 2030 mBufferedScanMsg.add(msg); 2031 } 2032 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2033 } else { 2034 // mIsScanOngoing and mIsFullScanOngoing 2035 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2036 } 2037 } 2038 2039 2040 /** 2041 * return true iff scan request is accepted 2042 */ 2043 private boolean startScanNative(int type, String freqs) { 2044 if (mWifiNative.scan(type, freqs)) { 2045 mIsScanOngoing = true; 2046 mIsFullScanOngoing = (freqs == null); 2047 lastScanFreqs = freqs; 2048 return true; 2049 } 2050 return false; 2051 } 2052 2053 /** 2054 * TODO: doc 2055 */ 2056 public void setSupplicantRunning(boolean enable) { 2057 if (enable) { 2058 sendMessage(CMD_START_SUPPLICANT); 2059 } else { 2060 sendMessage(CMD_STOP_SUPPLICANT); 2061 } 2062 } 2063 2064 /** 2065 * TODO: doc 2066 */ 2067 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2068 if (enable) { 2069 sendMessage(CMD_START_AP, wifiConfig); 2070 } else { 2071 sendMessage(CMD_STOP_AP); 2072 } 2073 } 2074 2075 public void setWifiApConfiguration(WifiConfiguration config) { 2076 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2077 } 2078 2079 public WifiConfiguration syncGetWifiApConfiguration() { 2080 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2081 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2082 resultMsg.recycle(); 2083 return ret; 2084 } 2085 2086 /** 2087 * TODO: doc 2088 */ 2089 public int syncGetWifiState() { 2090 return mWifiState.get(); 2091 } 2092 2093 /** 2094 * TODO: doc 2095 */ 2096 public String syncGetWifiStateByName() { 2097 switch (mWifiState.get()) { 2098 case WIFI_STATE_DISABLING: 2099 return "disabling"; 2100 case WIFI_STATE_DISABLED: 2101 return "disabled"; 2102 case WIFI_STATE_ENABLING: 2103 return "enabling"; 2104 case WIFI_STATE_ENABLED: 2105 return "enabled"; 2106 case WIFI_STATE_UNKNOWN: 2107 return "unknown state"; 2108 default: 2109 return "[invalid state]"; 2110 } 2111 } 2112 2113 /** 2114 * TODO: doc 2115 */ 2116 public int syncGetWifiApState() { 2117 return mWifiApState.get(); 2118 } 2119 2120 /** 2121 * TODO: doc 2122 */ 2123 public String syncGetWifiApStateByName() { 2124 switch (mWifiApState.get()) { 2125 case WIFI_AP_STATE_DISABLING: 2126 return "disabling"; 2127 case WIFI_AP_STATE_DISABLED: 2128 return "disabled"; 2129 case WIFI_AP_STATE_ENABLING: 2130 return "enabling"; 2131 case WIFI_AP_STATE_ENABLED: 2132 return "enabled"; 2133 case WIFI_AP_STATE_FAILED: 2134 return "failed"; 2135 default: 2136 return "[invalid state]"; 2137 } 2138 } 2139 2140 /** 2141 * Get status information for the current connection, if any. 2142 * 2143 * @return a {@link WifiInfo} object containing information about the current connection 2144 */ 2145 public WifiInfo syncRequestConnectionInfo() { 2146 return mWifiInfo; 2147 } 2148 2149 public DhcpResults syncGetDhcpResults() { 2150 synchronized (mDhcpResultsLock) { 2151 return new DhcpResults(mDhcpResults); 2152 } 2153 } 2154 2155 /** 2156 * TODO: doc 2157 */ 2158 public void setDriverStart(boolean enable) { 2159 if (enable) { 2160 sendMessage(CMD_START_DRIVER); 2161 } else { 2162 sendMessage(CMD_STOP_DRIVER); 2163 } 2164 } 2165 2166 /** 2167 * TODO: doc 2168 */ 2169 public void setOperationalMode(int mode) { 2170 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2171 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2172 } 2173 2174 /** 2175 * TODO: doc 2176 */ 2177 public List<ScanResult> syncGetScanResultsList() { 2178 synchronized (mScanResultCache) { 2179 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2180 for (ScanDetail result : mScanResults) { 2181 scanList.add(new ScanResult(result.getScanResult())); 2182 } 2183 return scanList; 2184 } 2185 } 2186 2187 public void disableEphemeralNetwork(String SSID) { 2188 if (SSID != null) { 2189 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2190 } 2191 } 2192 2193 /** 2194 * Get unsynchronized pointer to scan result list 2195 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2196 */ 2197 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2198 return mScanResults; 2199 } 2200 2201 /** 2202 * Disconnect from Access Point 2203 */ 2204 public void disconnectCommand() { 2205 sendMessage(CMD_DISCONNECT); 2206 } 2207 2208 public void disconnectCommand(int uid, int reason) { 2209 sendMessage(CMD_DISCONNECT, uid, reason); 2210 } 2211 2212 /** 2213 * Initiate a reconnection to AP 2214 */ 2215 public void reconnectCommand() { 2216 sendMessage(CMD_RECONNECT); 2217 } 2218 2219 /** 2220 * Initiate a re-association to AP 2221 */ 2222 public void reassociateCommand() { 2223 sendMessage(CMD_REASSOCIATE); 2224 } 2225 2226 /** 2227 * Reload networks and then reconnect; helps load correct data for TLS networks 2228 */ 2229 2230 public void reloadTlsNetworksAndReconnect() { 2231 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2232 } 2233 2234 /** 2235 * Add a network synchronously 2236 * 2237 * @return network id of the new network 2238 */ 2239 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2240 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2241 int result = resultMsg.arg1; 2242 resultMsg.recycle(); 2243 return result; 2244 } 2245 2246 /** 2247 * Get configured networks synchronously 2248 * 2249 * @param channel 2250 * @return 2251 */ 2252 2253 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2254 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2255 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2256 resultMsg.recycle(); 2257 return result; 2258 } 2259 2260 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2261 Message resultMsg = channel.sendMessageSynchronously( 2262 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2263 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2264 resultMsg.recycle(); 2265 return result; 2266 } 2267 2268 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2269 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2270 return (WifiConfiguration) resultMsg.obj; 2271 } 2272 2273 /** 2274 * Get connection statistics synchronously 2275 * 2276 * @param channel 2277 * @return 2278 */ 2279 2280 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2281 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2282 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2283 resultMsg.recycle(); 2284 return result; 2285 } 2286 2287 /** 2288 * Get adaptors synchronously 2289 */ 2290 2291 public int syncGetSupportedFeatures(AsyncChannel channel) { 2292 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2293 int supportedFeatureSet = resultMsg.arg1; 2294 resultMsg.recycle(); 2295 return supportedFeatureSet; 2296 } 2297 2298 /** 2299 * Get link layers stats for adapter synchronously 2300 */ 2301 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2302 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2303 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2304 resultMsg.recycle(); 2305 return result; 2306 } 2307 2308 /** 2309 * Delete a network 2310 * 2311 * @param networkId id of the network to be removed 2312 */ 2313 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2314 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2315 boolean result = (resultMsg.arg1 != FAILURE); 2316 resultMsg.recycle(); 2317 return result; 2318 } 2319 2320 /** 2321 * Enable a network 2322 * 2323 * @param netId network id of the network 2324 * @param disableOthers true, if all other networks have to be disabled 2325 * @return {@code true} if the operation succeeds, {@code false} otherwise 2326 */ 2327 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2328 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2329 disableOthers ? 1 : 0); 2330 boolean result = (resultMsg.arg1 != FAILURE); 2331 resultMsg.recycle(); 2332 return result; 2333 } 2334 2335 /** 2336 * Disable a network 2337 * 2338 * @param netId network id of the network 2339 * @return {@code true} if the operation succeeds, {@code false} otherwise 2340 */ 2341 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2342 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2343 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2344 resultMsg.recycle(); 2345 return result; 2346 } 2347 2348 /** 2349 * Retrieves a WPS-NFC configuration token for the specified network 2350 * 2351 * @return a hex string representation of the WPS-NFC configuration token 2352 */ 2353 public String syncGetWpsNfcConfigurationToken(int netId) { 2354 return mWifiNative.getNfcWpsConfigurationToken(netId); 2355 } 2356 2357 void enableBackgroundScan(boolean enable) { 2358 if (enable) { 2359 mWifiConfigStore.enableAllNetworks(); 2360 } 2361 mWifiNative.enableBackgroundScan(enable); 2362 } 2363 2364 /** 2365 * Blacklist a BSSID. This will avoid the AP if there are 2366 * alternate APs to connect 2367 * 2368 * @param bssid BSSID of the network 2369 */ 2370 public void addToBlacklist(String bssid) { 2371 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2372 } 2373 2374 /** 2375 * Clear the blacklist list 2376 */ 2377 public void clearBlacklist() { 2378 sendMessage(CMD_CLEAR_BLACKLIST); 2379 } 2380 2381 public void enableRssiPolling(boolean enabled) { 2382 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2383 } 2384 2385 public void enableAllNetworks() { 2386 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2387 } 2388 2389 /** 2390 * Start filtering Multicast v4 packets 2391 */ 2392 public void startFilteringMulticastV4Packets() { 2393 mFilteringMulticastV4Packets.set(true); 2394 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2395 } 2396 2397 /** 2398 * Stop filtering Multicast v4 packets 2399 */ 2400 public void stopFilteringMulticastV4Packets() { 2401 mFilteringMulticastV4Packets.set(false); 2402 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2403 } 2404 2405 /** 2406 * Start filtering Multicast v4 packets 2407 */ 2408 public void startFilteringMulticastV6Packets() { 2409 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2410 } 2411 2412 /** 2413 * Stop filtering Multicast v4 packets 2414 */ 2415 public void stopFilteringMulticastV6Packets() { 2416 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2417 } 2418 2419 /** 2420 * Set high performance mode of operation. 2421 * Enabling would set active power mode and disable suspend optimizations; 2422 * disabling would set auto power mode and enable suspend optimizations 2423 * 2424 * @param enable true if enable, false otherwise 2425 */ 2426 public void setHighPerfModeEnabled(boolean enable) { 2427 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2428 } 2429 2430 /** 2431 * Set the country code 2432 * 2433 * @param countryCode following ISO 3166 format 2434 * @param persist {@code true} if the setting should be remembered. 2435 */ 2436 public synchronized void setCountryCode(String countryCode, boolean persist) { 2437 // If it's a good country code, apply after the current 2438 // wifi connection is terminated; ignore resetting of code 2439 // for now (it is unclear what the chipset should do when 2440 // country code is reset) 2441 2442 if (TextUtils.isEmpty(countryCode)) { 2443 log("Ignoring resetting of country code"); 2444 } else { 2445 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2446 // else only when the new country code is different from the current one to set 2447 int countryCodeSequence = mCountryCodeSequence.get(); 2448 if (countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2449 2450 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2451 mSetCountryCode = countryCode; 2452 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2453 countryCode); 2454 } 2455 2456 if (persist) { 2457 Settings.Global.putString(mContext.getContentResolver(), 2458 Settings.Global.WIFI_COUNTRY_CODE, 2459 countryCode); 2460 } 2461 } 2462 } 2463 2464 /** 2465 * Get the country code 2466 * 2467 * @param countryCode following ISO 3166 format 2468 */ 2469 public String getCountryCode() { 2470 return mSetCountryCode; 2471 } 2472 2473 2474 /** 2475 * Set the operational frequency band 2476 * 2477 * @param band 2478 * @param persist {@code true} if the setting should be remembered. 2479 */ 2480 public void setFrequencyBand(int band, boolean persist) { 2481 if (persist) { 2482 Settings.Global.putInt(mContext.getContentResolver(), 2483 Settings.Global.WIFI_FREQUENCY_BAND, 2484 band); 2485 } 2486 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2487 } 2488 2489 /** 2490 * Enable TDLS for a specific MAC address 2491 */ 2492 public void enableTdls(String remoteMacAddress, boolean enable) { 2493 int enabler = enable ? 1 : 0; 2494 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2495 } 2496 2497 /** 2498 * Returns the operational frequency band 2499 */ 2500 public int getFrequencyBand() { 2501 return mFrequencyBand.get(); 2502 } 2503 2504 /** 2505 * Returns the wifi configuration file 2506 */ 2507 public String getConfigFile() { 2508 return mWifiConfigStore.getConfigFile(); 2509 } 2510 2511 /** 2512 * Send a message indicating bluetooth adapter connection state changed 2513 */ 2514 public void sendBluetoothAdapterStateChange(int state) { 2515 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2516 } 2517 2518 /** 2519 * Save configuration on supplicant 2520 * 2521 * @return {@code true} if the operation succeeds, {@code false} otherwise 2522 * <p/> 2523 * TODO: deprecate this 2524 */ 2525 public boolean syncSaveConfig(AsyncChannel channel) { 2526 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2527 boolean result = (resultMsg.arg1 != FAILURE); 2528 resultMsg.recycle(); 2529 return result; 2530 } 2531 2532 public void updateBatteryWorkSource(WorkSource newSource) { 2533 synchronized (mRunningWifiUids) { 2534 try { 2535 if (newSource != null) { 2536 mRunningWifiUids.set(newSource); 2537 } 2538 if (mIsRunning) { 2539 if (mReportedRunning) { 2540 // If the work source has changed since last time, need 2541 // to remove old work from battery stats. 2542 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2543 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2544 mRunningWifiUids); 2545 mLastRunningWifiUids.set(mRunningWifiUids); 2546 } 2547 } else { 2548 // Now being started, report it. 2549 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2550 mLastRunningWifiUids.set(mRunningWifiUids); 2551 mReportedRunning = true; 2552 } 2553 } else { 2554 if (mReportedRunning) { 2555 // Last reported we were running, time to stop. 2556 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2557 mLastRunningWifiUids.clear(); 2558 mReportedRunning = false; 2559 } 2560 } 2561 mWakeLock.setWorkSource(newSource); 2562 } catch (RemoteException ignore) { 2563 } 2564 } 2565 } 2566 2567 @Override 2568 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2569 super.dump(fd, pw, args); 2570 mSupplicantStateTracker.dump(fd, pw, args); 2571 pw.println("mLinkProperties " + mLinkProperties); 2572 pw.println("mWifiInfo " + mWifiInfo); 2573 pw.println("mDhcpResults " + mDhcpResults); 2574 pw.println("mNetworkInfo " + mNetworkInfo); 2575 pw.println("mLastSignalLevel " + mLastSignalLevel); 2576 pw.println("mLastBssid " + mLastBssid); 2577 pw.println("mLastNetworkId " + mLastNetworkId); 2578 pw.println("mOperationalMode " + mOperationalMode); 2579 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2580 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2581 pw.println("Supplicant status " + mWifiNative.status(true)); 2582 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2583 pw.println("mSetCountryCode " + mSetCountryCode); 2584 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2585 mNetworkFactory.dump(fd, pw, args); 2586 mUntrustedNetworkFactory.dump(fd, pw, args); 2587 pw.println(); 2588 mWifiConfigStore.dump(fd, pw, args); 2589 pw.println("FW Version is: " + mWifiLogger.getFirmwareVersion()); 2590 pw.println("Driver Version is: " + mWifiLogger.getDriverVersion()); 2591 WifiLogger.RingBufferStatus[] status = mWifiLogger.getRingBufferStatus(); 2592 for (WifiLogger.RingBufferStatus element : status) { 2593 pw.println("Ring buffer status: " + element); 2594 } 2595 mWifiLogger.getAllRingBufferData(); 2596 pw.println("Start fw memory dump:-----------------------------------------------"); 2597 String fwDump = mWifiLogger.getFwMemoryDump(); 2598 if(fwDump != null) { 2599 pw.println(fwDump); 2600 } else { 2601 pw.println("Fail to get FW memory dump"); 2602 } 2603 pw.println("End fw memory dump:--------------------------------------------------"); 2604 } 2605 2606 /** 2607 * ****************************************************** 2608 * Internal private functions 2609 * ****************************************************** 2610 */ 2611 2612 private void logStateAndMessage(Message message, String state) { 2613 messageHandlingStatus = 0; 2614 if (mLogMessages) { 2615 //long now = SystemClock.elapsedRealtimeNanos(); 2616 //String ts = String.format("[%,d us]", now/1000); 2617 2618 loge(" " + state + " " + getLogRecString(message)); 2619 } 2620 } 2621 2622 /** 2623 * helper, prints the milli time since boot wi and w/o suspended time 2624 */ 2625 String printTime() { 2626 StringBuilder sb = new StringBuilder(); 2627 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2628 sb.append("/").append(SystemClock.elapsedRealtime()); 2629 return sb.toString(); 2630 } 2631 2632 /** 2633 * Return the additional string to be logged by LogRec, default 2634 * 2635 * @param msg that was processed 2636 * @return information to be logged as a String 2637 */ 2638 protected String getLogRecString(Message msg) { 2639 WifiConfiguration config; 2640 Long now; 2641 String report; 2642 String key; 2643 StringBuilder sb = new StringBuilder(); 2644 if (mScreenOn) { 2645 sb.append("!"); 2646 } 2647 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2648 sb.append("(").append(messageHandlingStatus).append(")"); 2649 } 2650 sb.append(smToString(msg)); 2651 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2652 sb.append(" uid=" + msg.sendingUid); 2653 } 2654 switch (msg.what) { 2655 case CMD_STARTED_PNO_DBG: 2656 sb.append(" "); 2657 sb.append(Integer.toString(msg.arg1)); 2658 sb.append(" "); 2659 sb.append(Integer.toString(msg.arg2)); 2660 if (msg.obj != null) { 2661 sb.append((String)msg.obj); 2662 } 2663 break; 2664 case CMD_PNO_NETWORK_FOUND: 2665 sb.append(" "); 2666 sb.append(Integer.toString(msg.arg1)); 2667 sb.append(" "); 2668 sb.append(Integer.toString(msg.arg2)); 2669 if (msg.obj != null) { 2670 ScanResult[] results = (ScanResult[])msg.obj; 2671 for (int i = 0; i < results.length; i++) { 2672 sb.append(" ").append(results[i].SSID).append(" "); 2673 sb.append(results[i].frequency); 2674 sb.append(" ").append(results[i].level); 2675 } 2676 } 2677 break; 2678 case CMD_START_SCAN: 2679 now = System.currentTimeMillis(); 2680 sb.append(" "); 2681 sb.append(Integer.toString(msg.arg1)); 2682 sb.append(" "); 2683 sb.append(Integer.toString(msg.arg2)); 2684 sb.append(" ic="); 2685 sb.append(Integer.toString(sScanAlarmIntentCount)); 2686 if (msg.obj != null) { 2687 Bundle bundle = (Bundle) msg.obj; 2688 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2689 if (request != 0) { 2690 sb.append(" proc(ms):").append(now - request); 2691 } 2692 } 2693 if (mIsScanOngoing) sb.append(" onGoing"); 2694 if (mIsFullScanOngoing) sb.append(" full"); 2695 if (lastStartScanTimeStamp != 0) { 2696 sb.append(" started:").append(lastStartScanTimeStamp); 2697 sb.append(",").append(now - lastStartScanTimeStamp); 2698 } 2699 if (lastScanDuration != 0) { 2700 sb.append(" dur:").append(lastScanDuration); 2701 } 2702 sb.append(" cnt=").append(mDelayedScanCounter); 2703 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2704 sb.append(" f=").append(mWifiInfo.getFrequency()); 2705 sb.append(" sc=").append(mWifiInfo.score); 2706 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2707 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2708 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2709 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2710 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2711 if (lastScanFreqs != null) { 2712 sb.append(" list=").append(lastScanFreqs); 2713 } else { 2714 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2715 } 2716 report = reportOnTime(); 2717 if (report != null) { 2718 sb.append(" ").append(report); 2719 } 2720 break; 2721 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2722 sb.append(" "); 2723 sb.append(Integer.toString(msg.arg1)); 2724 sb.append(" "); 2725 sb.append(Integer.toString(msg.arg2)); 2726 sb.append(printTime()); 2727 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2728 if (stateChangeResult != null) { 2729 sb.append(stateChangeResult.toString()); 2730 } 2731 break; 2732 case WifiManager.SAVE_NETWORK: 2733 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2734 sb.append(" "); 2735 sb.append(Integer.toString(msg.arg1)); 2736 sb.append(" "); 2737 sb.append(Integer.toString(msg.arg2)); 2738 if (lastSavedConfigurationAttempt != null) { 2739 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2740 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2741 if (lastSavedConfigurationAttempt.hiddenSSID) { 2742 sb.append(" hidden"); 2743 } 2744 if (lastSavedConfigurationAttempt.preSharedKey != null 2745 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2746 sb.append(" hasPSK"); 2747 } 2748 if (lastSavedConfigurationAttempt.ephemeral) { 2749 sb.append(" ephemeral"); 2750 } 2751 if (lastSavedConfigurationAttempt.selfAdded) { 2752 sb.append(" selfAdded"); 2753 } 2754 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2755 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2756 } 2757 break; 2758 case WifiManager.FORGET_NETWORK: 2759 sb.append(" "); 2760 sb.append(Integer.toString(msg.arg1)); 2761 sb.append(" "); 2762 sb.append(Integer.toString(msg.arg2)); 2763 if (lastForgetConfigurationAttempt != null) { 2764 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2765 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2766 if (lastForgetConfigurationAttempt.hiddenSSID) { 2767 sb.append(" hidden"); 2768 } 2769 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2770 sb.append(" hasPSK"); 2771 } 2772 if (lastForgetConfigurationAttempt.ephemeral) { 2773 sb.append(" ephemeral"); 2774 } 2775 if (lastForgetConfigurationAttempt.selfAdded) { 2776 sb.append(" selfAdded"); 2777 } 2778 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2779 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2780 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2781 } 2782 break; 2783 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2784 sb.append(" "); 2785 sb.append(Integer.toString(msg.arg1)); 2786 sb.append(" "); 2787 sb.append(Integer.toString(msg.arg2)); 2788 String bssid = (String) msg.obj; 2789 if (bssid != null && bssid.length() > 0) { 2790 sb.append(" "); 2791 sb.append(bssid); 2792 } 2793 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2794 sb.append(printTime()); 2795 break; 2796 case WifiMonitor.SCAN_RESULTS_EVENT: 2797 sb.append(" "); 2798 sb.append(Integer.toString(msg.arg1)); 2799 sb.append(" "); 2800 sb.append(Integer.toString(msg.arg2)); 2801 if (mScanResults != null) { 2802 sb.append(" found="); 2803 sb.append(mScanResults.size()); 2804 } 2805 sb.append(" known=").append(mNumScanResultsKnown); 2806 sb.append(" got=").append(mNumScanResultsReturned); 2807 if (lastScanDuration != 0) { 2808 sb.append(" dur:").append(lastScanDuration); 2809 } 2810 if (mOnTime != 0) { 2811 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2812 sb.append(",").append(mOnTime); 2813 } 2814 if (mTxTime != 0) { 2815 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2816 sb.append(",").append(mTxTime); 2817 } 2818 if (mRxTime != 0) { 2819 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2820 sb.append(",").append(mRxTime); 2821 } 2822 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2823 sb.append(String.format(" con=%d", mConnectionRequests)); 2824 key = mWifiConfigStore.getLastSelectedConfiguration(); 2825 if (key != null) { 2826 sb.append(" last=").append(key); 2827 } 2828 break; 2829 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2830 sb.append(" "); 2831 sb.append(Integer.toString(msg.arg1)); 2832 sb.append(" "); 2833 sb.append(Integer.toString(msg.arg2)); 2834 sb.append(" ").append(mLastBssid); 2835 sb.append(" nid=").append(mLastNetworkId); 2836 config = getCurrentWifiConfiguration(); 2837 if (config != null) { 2838 sb.append(" ").append(config.configKey()); 2839 } 2840 sb.append(printTime()); 2841 key = mWifiConfigStore.getLastSelectedConfiguration(); 2842 if (key != null) { 2843 sb.append(" last=").append(key); 2844 } 2845 break; 2846 case CMD_TARGET_BSSID: 2847 case CMD_ASSOCIATED_BSSID: 2848 sb.append(" "); 2849 sb.append(Integer.toString(msg.arg1)); 2850 sb.append(" "); 2851 sb.append(Integer.toString(msg.arg2)); 2852 if (msg.obj != null) { 2853 sb.append(" BSSID=").append((String) msg.obj); 2854 } 2855 if (mTargetRoamBSSID != null) { 2856 sb.append(" Target=").append(mTargetRoamBSSID); 2857 } 2858 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2859 sb.append(printTime()); 2860 break; 2861 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2862 if (msg.obj != null) { 2863 sb.append(" ").append((String) msg.obj); 2864 } 2865 sb.append(" nid=").append(msg.arg1); 2866 sb.append(" reason=").append(msg.arg2); 2867 if (mLastBssid != null) { 2868 sb.append(" lastbssid=").append(mLastBssid); 2869 } 2870 if (mWifiInfo.getFrequency() != -1) { 2871 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2872 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2873 } 2874 if (linkDebouncing) { 2875 sb.append(" debounce"); 2876 } 2877 sb.append(printTime()); 2878 break; 2879 case WifiMonitor.SSID_TEMP_DISABLED: 2880 case WifiMonitor.SSID_REENABLED: 2881 sb.append(" nid=").append(msg.arg1); 2882 if (msg.obj != null) { 2883 sb.append(" ").append((String) msg.obj); 2884 } 2885 config = getCurrentWifiConfiguration(); 2886 if (config != null) { 2887 sb.append(" cur=").append(config.configKey()); 2888 sb.append(" ajst=").append(config.autoJoinStatus); 2889 if (config.selfAdded) { 2890 sb.append(" selfAdded"); 2891 } 2892 if (config.status != 0) { 2893 sb.append(" st=").append(config.status); 2894 sb.append(" rs=").append(config.disableReason); 2895 } 2896 if (config.lastConnected != 0) { 2897 now = System.currentTimeMillis(); 2898 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2899 } 2900 if (mLastBssid != null) { 2901 sb.append(" lastbssid=").append(mLastBssid); 2902 } 2903 if (mWifiInfo.getFrequency() != -1) { 2904 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2905 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2906 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2907 } 2908 } 2909 sb.append(printTime()); 2910 break; 2911 case CMD_RSSI_POLL: 2912 case CMD_UNWANTED_NETWORK: 2913 case WifiManager.RSSI_PKTCNT_FETCH: 2914 sb.append(" "); 2915 sb.append(Integer.toString(msg.arg1)); 2916 sb.append(" "); 2917 sb.append(Integer.toString(msg.arg2)); 2918 if (mWifiInfo.getSSID() != null) 2919 if (mWifiInfo.getSSID() != null) 2920 sb.append(" ").append(mWifiInfo.getSSID()); 2921 if (mWifiInfo.getBSSID() != null) 2922 sb.append(" ").append(mWifiInfo.getBSSID()); 2923 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2924 sb.append(" f=").append(mWifiInfo.getFrequency()); 2925 sb.append(" sc=").append(mWifiInfo.score); 2926 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2927 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2928 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2929 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2930 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2931 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2932 report = reportOnTime(); 2933 if (report != null) { 2934 sb.append(" ").append(report); 2935 } 2936 if (wifiScoringReport != null) { 2937 sb.append(wifiScoringReport); 2938 } 2939 break; 2940 case CMD_AUTO_CONNECT: 2941 case WifiManager.CONNECT_NETWORK: 2942 sb.append(" "); 2943 sb.append(Integer.toString(msg.arg1)); 2944 sb.append(" "); 2945 sb.append(Integer.toString(msg.arg2)); 2946 config = (WifiConfiguration) msg.obj; 2947 if (config != null) { 2948 sb.append(" ").append(config.configKey()); 2949 if (config.visibility != null) { 2950 sb.append(" ").append(config.visibility.toString()); 2951 } 2952 } 2953 if (mTargetRoamBSSID != null) { 2954 sb.append(" ").append(mTargetRoamBSSID); 2955 } 2956 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2957 sb.append(printTime()); 2958 config = getCurrentWifiConfiguration(); 2959 if (config != null) { 2960 sb.append(config.configKey()); 2961 if (config.visibility != null) { 2962 sb.append(" ").append(config.visibility.toString()); 2963 } 2964 } 2965 break; 2966 case CMD_AUTO_ROAM: 2967 sb.append(" "); 2968 sb.append(Integer.toString(msg.arg1)); 2969 sb.append(" "); 2970 sb.append(Integer.toString(msg.arg2)); 2971 ScanResult result = (ScanResult) msg.obj; 2972 if (result != null) { 2973 now = System.currentTimeMillis(); 2974 sb.append(" bssid=").append(result.BSSID); 2975 sb.append(" rssi=").append(result.level); 2976 sb.append(" freq=").append(result.frequency); 2977 if (result.seen > 0 && result.seen < now) { 2978 sb.append(" seen=").append(now - result.seen); 2979 } else { 2980 // Somehow the timestamp for this scan result is inconsistent 2981 sb.append(" !seen=").append(result.seen); 2982 } 2983 } 2984 if (mTargetRoamBSSID != null) { 2985 sb.append(" ").append(mTargetRoamBSSID); 2986 } 2987 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2988 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2989 sb.append(printTime()); 2990 break; 2991 case CMD_ADD_OR_UPDATE_NETWORK: 2992 sb.append(" "); 2993 sb.append(Integer.toString(msg.arg1)); 2994 sb.append(" "); 2995 sb.append(Integer.toString(msg.arg2)); 2996 if (msg.obj != null) { 2997 config = (WifiConfiguration) msg.obj; 2998 sb.append(" ").append(config.configKey()); 2999 sb.append(" prio=").append(config.priority); 3000 sb.append(" status=").append(config.status); 3001 if (config.BSSID != null) { 3002 sb.append(" ").append(config.BSSID); 3003 } 3004 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 3005 if (curConfig != null) { 3006 if (curConfig.configKey().equals(config.configKey())) { 3007 sb.append(" is current"); 3008 } else { 3009 sb.append(" current=").append(curConfig.configKey()); 3010 sb.append(" prio=").append(curConfig.priority); 3011 sb.append(" status=").append(curConfig.status); 3012 } 3013 } 3014 } 3015 break; 3016 case WifiManager.DISABLE_NETWORK: 3017 case CMD_ENABLE_NETWORK: 3018 sb.append(" "); 3019 sb.append(Integer.toString(msg.arg1)); 3020 sb.append(" "); 3021 sb.append(Integer.toString(msg.arg2)); 3022 key = mWifiConfigStore.getLastSelectedConfiguration(); 3023 if (key != null) { 3024 sb.append(" last=").append(key); 3025 } 3026 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 3027 if (config != null && (key == null || !config.configKey().equals(key))) { 3028 sb.append(" target=").append(key); 3029 } 3030 break; 3031 case CMD_GET_CONFIGURED_NETWORKS: 3032 sb.append(" "); 3033 sb.append(Integer.toString(msg.arg1)); 3034 sb.append(" "); 3035 sb.append(Integer.toString(msg.arg2)); 3036 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 3037 break; 3038 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 3039 sb.append(" "); 3040 sb.append(Integer.toString(msg.arg1)); 3041 sb.append(" "); 3042 sb.append(Integer.toString(msg.arg2)); 3043 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3044 sb.append(",").append(mWifiInfo.txBad); 3045 sb.append(",").append(mWifiInfo.txRetries); 3046 break; 3047 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3048 sb.append(" "); 3049 sb.append(Integer.toString(msg.arg1)); 3050 sb.append(" "); 3051 sb.append(Integer.toString(msg.arg2)); 3052 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3053 sb.append(" OK "); 3054 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3055 sb.append(" FAIL "); 3056 } 3057 if (mLinkProperties != null) { 3058 if (mLinkProperties.hasIPv4Address()) { 3059 sb.append(" v4"); 3060 } 3061 if (mLinkProperties.hasGlobalIPv6Address()) { 3062 sb.append(" v6"); 3063 } 3064 if (mLinkProperties.hasIPv4DefaultRoute()) { 3065 sb.append(" v4r"); 3066 } 3067 if (mLinkProperties.hasIPv6DefaultRoute()) { 3068 sb.append(" v6r"); 3069 } 3070 if (mLinkProperties.hasIPv4DnsServer()) { 3071 sb.append(" v4dns"); 3072 } 3073 if (mLinkProperties.hasIPv6DnsServer()) { 3074 sb.append(" v6dns"); 3075 } 3076 } 3077 break; 3078 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3079 sb.append(" "); 3080 sb.append(Integer.toString(msg.arg1)); 3081 sb.append(" "); 3082 sb.append(Integer.toString(msg.arg2)); 3083 if (msg.obj != null) { 3084 NetworkInfo info = (NetworkInfo) msg.obj; 3085 NetworkInfo.State state = info.getState(); 3086 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3087 if (state != null) { 3088 sb.append(" st=").append(state); 3089 } 3090 if (detailedState != null) { 3091 sb.append("/").append(detailedState); 3092 } 3093 } 3094 break; 3095 case CMD_IP_CONFIGURATION_LOST: 3096 int count = -1; 3097 WifiConfiguration c = getCurrentWifiConfiguration(); 3098 if (c != null) count = c.numIpConfigFailures; 3099 sb.append(" "); 3100 sb.append(Integer.toString(msg.arg1)); 3101 sb.append(" "); 3102 sb.append(Integer.toString(msg.arg2)); 3103 sb.append(" failures: "); 3104 sb.append(Integer.toString(count)); 3105 sb.append("/"); 3106 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3107 if (mWifiInfo.getBSSID() != null) { 3108 sb.append(" ").append(mWifiInfo.getBSSID()); 3109 } 3110 if (c != null) { 3111 ScanDetailCache scanDetailCache = 3112 mWifiConfigStore.getScanDetailCache(c); 3113 if (scanDetailCache != null) { 3114 for (ScanDetail sd : scanDetailCache.values()) { 3115 ScanResult r = sd.getScanResult(); 3116 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3117 sb.append(" ipfail=").append(r.numIpConfigFailures); 3118 sb.append(",st=").append(r.autoJoinStatus); 3119 } 3120 } 3121 } 3122 sb.append(" -> ajst=").append(c.autoJoinStatus); 3123 sb.append(" ").append(c.disableReason); 3124 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3125 sb.append(",").append(mWifiInfo.txBad); 3126 sb.append(",").append(mWifiInfo.txRetries); 3127 } 3128 sb.append(printTime()); 3129 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3130 break; 3131 case CMD_UPDATE_LINKPROPERTIES: 3132 sb.append(" "); 3133 sb.append(Integer.toString(msg.arg1)); 3134 sb.append(" "); 3135 sb.append(Integer.toString(msg.arg2)); 3136 if (mLinkProperties != null) { 3137 if (mLinkProperties.hasIPv4Address()) { 3138 sb.append(" v4"); 3139 } 3140 if (mLinkProperties.hasGlobalIPv6Address()) { 3141 sb.append(" v6"); 3142 } 3143 if (mLinkProperties.hasIPv4DefaultRoute()) { 3144 sb.append(" v4r"); 3145 } 3146 if (mLinkProperties.hasIPv6DefaultRoute()) { 3147 sb.append(" v6r"); 3148 } 3149 if (mLinkProperties.hasIPv4DnsServer()) { 3150 sb.append(" v4dns"); 3151 } 3152 if (mLinkProperties.hasIPv6DnsServer()) { 3153 sb.append(" v6dns"); 3154 } 3155 } 3156 break; 3157 case CMD_SET_COUNTRY_CODE: 3158 sb.append(" "); 3159 sb.append(Integer.toString(msg.arg1)); 3160 sb.append(" "); 3161 sb.append(Integer.toString(msg.arg2)); 3162 if (msg.obj != null) { 3163 sb.append(" ").append((String) msg.obj); 3164 } 3165 break; 3166 case CMD_ROAM_WATCHDOG_TIMER: 3167 sb.append(" "); 3168 sb.append(Integer.toString(msg.arg1)); 3169 sb.append(" "); 3170 sb.append(Integer.toString(msg.arg2)); 3171 sb.append(" cur=").append(roamWatchdogCount); 3172 break; 3173 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3174 sb.append(" "); 3175 sb.append(Integer.toString(msg.arg1)); 3176 sb.append(" "); 3177 sb.append(Integer.toString(msg.arg2)); 3178 sb.append(" cur=").append(disconnectingWatchdogCount); 3179 break; 3180 default: 3181 sb.append(" "); 3182 sb.append(Integer.toString(msg.arg1)); 3183 sb.append(" "); 3184 sb.append(Integer.toString(msg.arg2)); 3185 break; 3186 } 3187 3188 return sb.toString(); 3189 } 3190 3191 private void stopPno() { 3192 3193 // Stop PNO scans while we are trying to associate 3194 mWifiScanner.stopBackgroundScan(mWifiScanListener); 3195 3196 // clear the PNO list 3197 if (!WifiNative.setPnoList(null, WifiStateMachine.this)) { 3198 Log.e(TAG, "Failed to stop pno"); 3199 } 3200 3201 } 3202 3203 // In associated more, lazy roam will be looking for 5GHz roam candidate 3204 private boolean configureLazyRoam() { 3205 boolean status; 3206 if (!mAlwaysOnPnoSupported || (!mWifiConfigStore.enableHalBasedPno.get())) return false; 3207 3208 WifiNative.WifiLazyRoamParams params = mWifiNative.new WifiLazyRoamParams(); 3209 params.A_band_boost_threshold = mWifiConfigStore.bandPreferenceBoostThreshold5.get(); 3210 params.A_band_penalty_threshold = mWifiConfigStore.bandPreferencePenaltyThreshold5.get(); 3211 params.A_band_boost_factor = mWifiConfigStore.bandPreferenceBoostFactor5; 3212 params.A_band_penalty_factor = mWifiConfigStore.bandPreferencePenaltyFactor5; 3213 params.A_band_max_boost = 50; 3214 params.lazy_roam_hysteresis = 25; 3215 params.alert_roam_rssi_trigger = -75; 3216 3217 loge("startLazyRoam " + params.toString()); 3218 3219 if (!WifiNative.setLazyRoam(true, params)) { 3220 3221 loge("startLazyRoam couldnt program params"); 3222 3223 return false; 3224 } 3225 return true; 3226 } 3227 3228 // This function sends a background scan request for the current configuration 3229 private boolean setScanSettingsForLazyRoam() { 3230 3231 WifiConfiguration config = getCurrentWifiConfiguration(); 3232 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 3233 ONE_HOUR_MILLI, false); 3234 if (channels != null && channels.size() != 0) { 3235 3236 // then send a scan background request so as firmware 3237 // starts looking for our networks 3238 WifiScanner.ScanSettings settings = new WifiScanner.ScanSettings(); 3239 settings.band = WifiScanner.WIFI_BAND_UNSPECIFIED; 3240 settings.channels = new WifiScanner.ChannelSpec[channels.size()]; 3241 int i = 0; 3242 3243 StringBuilder sb = new StringBuilder(); 3244 for (Integer channel : channels) { 3245 settings.channels[i++] = new WifiScanner.ChannelSpec(channel); 3246 sb.append(" " + channel); 3247 } 3248 3249 // TODO, fix the scan interval logic 3250 if (mScreenOn) 3251 settings.periodInMs = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 3252 else 3253 settings.periodInMs = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 3254 3255 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3256 log("startLazyRoam: scan interval " + settings.periodInMs 3257 + " screen " + mScreenOn 3258 + " channels " + channels.size() + " : " + sb.toString()); 3259 3260 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3261 3262 3263 } else { 3264 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 3265 return false; 3266 } 3267 3268 3269 3270 3271 return true; 3272 } 3273 3274 // In associated more, lazy roam will be looking for 5GHz roam candidate 3275 private boolean stopLazyRoam() { 3276 boolean status; 3277 if (!mAlwaysOnPnoSupported || (!mWifiConfigStore.enableHalBasedPno.get())) return false; 3278 3279 return WifiNative.setLazyRoam(false, null); 3280 } 3281 3282 private boolean startPno() { 3283 if (!mAlwaysOnPnoSupported || (!mWifiConfigStore.enableHalBasedPno.get())) return false; 3284 3285 /* 3286 if (mWifiScannerChannel == null) { 3287 log("startPno: mWifiScannerChannel is null "); 3288 return false; 3289 }*/ 3290 if (mWifiScanner == null) { 3291 log("startPno: mWifiScanner is null "); 3292 return true; 3293 } 3294 3295 List<WifiNative.WifiPnoNetwork> llist 3296 = mWifiAutoJoinController.getPnoList(getCurrentWifiConfiguration()); 3297 if (llist == null) { 3298 log("startPno: couldnt get PNO list "); 3299 return false; 3300 } 3301 log("startPno: got llist size " + llist.size()); 3302 3303 // first program the network we want to look for thru the pno API 3304 WifiNative.WifiPnoNetwork list[] 3305 = (WifiNative.WifiPnoNetwork[]) llist.toArray(new WifiNative.WifiPnoNetwork[0]); 3306 3307 if (!WifiNative.setPnoList(list, WifiStateMachine.this)) { 3308 Log.e(TAG, "Failed to set pno, length = " + list.length); 3309 } 3310 3311 // then send a scan background request so as firmware 3312 // starts looking for our networks 3313 WifiScanner.ScanSettings settings = new WifiScanner.ScanSettings(); 3314 settings.band = WifiScanner.WIFI_BAND_BOTH; 3315 3316 // TODO, fix the scan interval logic 3317 if (mScreenOn) 3318 settings.periodInMs = mDefaultFrameworkScanIntervalMs; 3319 else 3320 settings.periodInMs = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 3321 3322 settings.reportEvents = WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL; 3323 log("startPno: settings BOTH_BANDS, length = " + list.length); 3324 3325 mWifiScanner.startBackgroundScan(settings, mWifiScanListener); 3326// mWifiScannerChannel.sendMessage 3327// (WifiScanner.CMD_START_BACKGROUND_SCAN, settings); 3328 if (DBG) { 3329 StringBuilder sb = new StringBuilder(); 3330 sb.append(" list: "); 3331 for (WifiNative.WifiPnoNetwork net : llist) { 3332 sb.append(" ").append(net.SSID).append(" auth ").append(net.auth); 3333 } 3334 sendMessage(CMD_STARTED_PNO_DBG, 1, 0, sb.toString()); 3335 } 3336 return true; 3337 } 3338 3339 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3340 mScreenOn = screenOn; 3341 if (PDBG) { 3342 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3343 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3344 + " state " + getCurrentState().getName() 3345 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3346 } 3347 enableRssiPolling(screenOn); 3348 if (screenOn) enableAllNetworks(); 3349 if (mUserWantsSuspendOpt.get()) { 3350 if (screenOn) { 3351 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3352 } else { 3353 // Allow 2s for suspend optimizations to be set 3354 mSuspendWakeLock.acquire(2000); 3355 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3356 } 3357 } 3358 mScreenBroadcastReceived.set(true); 3359 3360 getWifiLinkLayerStats(false); 3361 mOnTimeScreenStateChange = mOnTime; 3362 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3363 mEnableBackgroundScan = mScreenOn == false; 3364 cancelDelayedScan(); 3365 3366 if (screenOn) { 3367 setScanAlarm(false); 3368 clearBlacklist(); 3369 3370 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 3371 // In either Disconnectedstate or ConnectedState, 3372 // start the scan alarm so as to enable autojoin 3373 if (getCurrentState() == mConnectedState 3374 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 3375 if (!startPno()) { 3376 // Scan after 500ms 3377 startDelayedScan(500, null, null); 3378 } 3379 } else if (getCurrentState() == mDisconnectedState) { 3380 if (!startPno()) { 3381 // Scan after 500ms 3382 startDelayedScan(500, null, null); 3383 } 3384 } 3385 } else if (startBackgroundScanIfNeeded) { 3386 // Screen Off and Disconnected and chipset doesn't support scan offload 3387 // => start scan alarm 3388 // Screen Off and Disconnected and chipset does support scan offload 3389 // => will use scan offload (i.e. background scan) 3390 if (!mAlwaysOnPnoSupported) { 3391 if (!mBackgroundScanSupported) { 3392 setScanAlarm(true); 3393 } else { 3394 mEnableBackgroundScan = true; 3395 } 3396 } 3397 } 3398 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3399 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3400 if (startBackgroundScanIfNeeded) { 3401 if (!startPno()) { 3402 // to scan for them in background, we need all networks enabled 3403 enableBackgroundScan(mEnableBackgroundScan); 3404 } 3405 } 3406 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3407 } 3408 3409 private void checkAndSetConnectivityInstance() { 3410 if (mCm == null) { 3411 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3412 } 3413 } 3414 3415 private boolean startTethering(ArrayList<String> available) { 3416 3417 boolean wifiAvailable = false; 3418 3419 checkAndSetConnectivityInstance(); 3420 3421 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3422 3423 for (String intf : available) { 3424 for (String regex : wifiRegexs) { 3425 if (intf.matches(regex)) { 3426 3427 InterfaceConfiguration ifcg = null; 3428 try { 3429 ifcg = mNwService.getInterfaceConfig(intf); 3430 if (ifcg != null) { 3431 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3432 ifcg.setLinkAddress(new LinkAddress( 3433 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3434 ifcg.setInterfaceUp(); 3435 3436 mNwService.setInterfaceConfig(intf, ifcg); 3437 } 3438 } catch (Exception e) { 3439 loge("Error configuring interface " + intf + ", :" + e); 3440 return false; 3441 } 3442 3443 if (mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3444 loge("Error tethering on " + intf); 3445 return false; 3446 } 3447 mTetherInterfaceName = intf; 3448 return true; 3449 } 3450 } 3451 } 3452 // We found no interfaces to tether 3453 return false; 3454 } 3455 3456 private void stopTethering() { 3457 3458 checkAndSetConnectivityInstance(); 3459 3460 /* Clear the interface config to allow dhcp correctly configure new 3461 ip settings */ 3462 InterfaceConfiguration ifcg = null; 3463 try { 3464 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3465 if (ifcg != null) { 3466 ifcg.setLinkAddress( 3467 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3468 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3469 } 3470 } catch (Exception e) { 3471 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3472 } 3473 3474 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3475 loge("Untether initiate failed!"); 3476 } 3477 } 3478 3479 private boolean isWifiTethered(ArrayList<String> active) { 3480 3481 checkAndSetConnectivityInstance(); 3482 3483 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3484 for (String intf : active) { 3485 for (String regex : wifiRegexs) { 3486 if (intf.matches(regex)) { 3487 return true; 3488 } 3489 } 3490 } 3491 // We found no interfaces that are tethered 3492 return false; 3493 } 3494 3495 /** 3496 * Set the country code from the system setting value, if any. 3497 */ 3498 private void setCountryCode() { 3499 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3500 Settings.Global.WIFI_COUNTRY_CODE); 3501 if (countryCode != null && !countryCode.isEmpty()) { 3502 setCountryCode(countryCode, false); 3503 } else { 3504 //use driver default 3505 } 3506 } 3507 3508 /** 3509 * Set the frequency band from the system setting value, if any. 3510 */ 3511 private void setFrequencyBand() { 3512 int band = Settings.Global.getInt(mContext.getContentResolver(), 3513 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3514 setFrequencyBand(band, false); 3515 } 3516 3517 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3518 if (DBG) { 3519 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3520 + " -want " + mUserWantsSuspendOpt.get() 3521 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3522 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3523 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3524 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3525 } 3526 //mWifiNative.setSuspendOptimizations(enabled); 3527 3528 if (enabled) { 3529 mSuspendOptNeedsDisabled &= ~reason; 3530 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3531 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3532 if (DBG) { 3533 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3534 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3535 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 3536 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 3537 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 3538 } 3539 mWifiNative.setSuspendOptimizations(true); 3540 } 3541 } else { 3542 mSuspendOptNeedsDisabled |= reason; 3543 mWifiNative.setSuspendOptimizations(false); 3544 } 3545 } 3546 3547 private void setSuspendOptimizations(int reason, boolean enabled) { 3548 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3549 if (enabled) { 3550 mSuspendOptNeedsDisabled &= ~reason; 3551 } else { 3552 mSuspendOptNeedsDisabled |= reason; 3553 } 3554 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3555 } 3556 3557 private void setWifiState(int wifiState) { 3558 final int previousWifiState = mWifiState.get(); 3559 3560 try { 3561 if (wifiState == WIFI_STATE_ENABLED) { 3562 mBatteryStats.noteWifiOn(); 3563 } else if (wifiState == WIFI_STATE_DISABLED) { 3564 mBatteryStats.noteWifiOff(); 3565 } 3566 } catch (RemoteException e) { 3567 loge("Failed to note battery stats in wifi"); 3568 } 3569 3570 mWifiState.set(wifiState); 3571 3572 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3573 3574 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3575 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3576 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3577 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3578 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3579 } 3580 3581 private void setWifiApState(int wifiApState) { 3582 final int previousWifiApState = mWifiApState.get(); 3583 3584 try { 3585 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3586 mBatteryStats.noteWifiOn(); 3587 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3588 mBatteryStats.noteWifiOff(); 3589 } 3590 } catch (RemoteException e) { 3591 loge("Failed to note battery stats in wifi"); 3592 } 3593 3594 // Update state 3595 mWifiApState.set(wifiApState); 3596 3597 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3598 3599 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3600 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3601 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3602 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3603 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3604 } 3605 3606 /* 3607 void ageOutScanResults(int age) { 3608 synchronized(mScanResultCache) { 3609 // Trim mScanResults, which prevent WifiStateMachine to return 3610 // obsolete scan results to queriers 3611 long now = System.CurrentTimeMillis(); 3612 for (int i = 0; i < mScanResults.size(); i++) { 3613 ScanResult result = mScanResults.get(i); 3614 if ((result.seen > now || (now - result.seen) > age)) { 3615 mScanResults.remove(i); 3616 } 3617 } 3618 } 3619 }*/ 3620 3621 private static final String IE_STR = "ie="; 3622 private static final String ID_STR = "id="; 3623 private static final String BSSID_STR = "bssid="; 3624 private static final String FREQ_STR = "freq="; 3625 private static final String LEVEL_STR = "level="; 3626 private static final String TSF_STR = "tsf="; 3627 private static final String FLAGS_STR = "flags="; 3628 private static final String SSID_STR = "ssid="; 3629 private static final String DELIMITER_STR = "===="; 3630 private static final String END_STR = "####"; 3631 3632 int emptyScanResultCount = 0; 3633 3634 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3635 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3636 3637 /** 3638 * Format: 3639 * <p/> 3640 * id=1 3641 * bssid=68:7f:76:d7:1a:6e 3642 * freq=2412 3643 * level=-44 3644 * tsf=1344626243700342 3645 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3646 * ssid=zfdy 3647 * ==== 3648 * id=2 3649 * bssid=68:5f:74:d7:1a:6f 3650 * freq=5180 3651 * level=-73 3652 * tsf=1344626243700373 3653 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3654 * ssid=zuby 3655 * ==== 3656 */ 3657 private void setScanResults() { 3658 mNumScanResultsKnown = 0; 3659 mNumScanResultsReturned = 0; 3660 String bssid = ""; 3661 int level = 0; 3662 int freq = 0; 3663 long tsf = 0; 3664 String flags = ""; 3665 WifiSsid wifiSsid = null; 3666 String scanResults; 3667 String tmpResults; 3668 StringBuffer scanResultsBuf = new StringBuffer(); 3669 int sid = 0; 3670 3671 while (true) { 3672 tmpResults = mWifiNative.scanResults(sid); 3673 if (TextUtils.isEmpty(tmpResults)) break; 3674 scanResultsBuf.append(tmpResults); 3675 scanResultsBuf.append("\n"); 3676 String[] lines = tmpResults.split("\n"); 3677 sid = -1; 3678 for (int i = lines.length - 1; i >= 0; i--) { 3679 if (lines[i].startsWith(END_STR)) { 3680 break; 3681 } else if (lines[i].startsWith(ID_STR)) { 3682 try { 3683 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3684 } catch (NumberFormatException e) { 3685 // Nothing to do 3686 } 3687 break; 3688 } 3689 } 3690 if (sid == -1) break; 3691 } 3692 3693 // Age out scan results, we return all scan results found in the last 12 seconds, 3694 // and NOT all scan results since last scan. 3695 // ageOutScanResults(12000); 3696 3697 scanResults = scanResultsBuf.toString(); 3698 if (TextUtils.isEmpty(scanResults)) { 3699 emptyScanResultCount++; 3700 if (emptyScanResultCount > 10) { 3701 // If we got too many empty scan results, the current scan cache is stale, 3702 // hence clear it. 3703 mScanResults = new ArrayList<>(); 3704 } 3705 return; 3706 } 3707 3708 emptyScanResultCount = 0; 3709 3710 // note that all these splits and substrings keep references to the original 3711 // huge string buffer while the amount we really want is generally pretty small 3712 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3713 synchronized (mScanResultCache) { 3714 mScanResults = new ArrayList<>(); 3715 String[] lines = scanResults.split("\n"); 3716 final int bssidStrLen = BSSID_STR.length(); 3717 final int flagLen = FLAGS_STR.length(); 3718 String infoElements = null; 3719 List<String> anqpLines = null; 3720 3721 for (String line : lines) { 3722 if (line.startsWith(BSSID_STR)) { 3723 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3724 } else if (line.startsWith(FREQ_STR)) { 3725 try { 3726 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3727 } catch (NumberFormatException e) { 3728 freq = 0; 3729 } 3730 } else if (line.startsWith(LEVEL_STR)) { 3731 try { 3732 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3733 /* some implementations avoid negative values by adding 256 3734 * so we need to adjust for that here. 3735 */ 3736 if (level > 0) level -= 256; 3737 } catch (NumberFormatException e) { 3738 level = 0; 3739 } 3740 } else if (line.startsWith(TSF_STR)) { 3741 try { 3742 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3743 } catch (NumberFormatException e) { 3744 tsf = 0; 3745 } 3746 } else if (line.startsWith(FLAGS_STR)) { 3747 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3748 } else if (line.startsWith(SSID_STR)) { 3749 wifiSsid = WifiSsid.createFromAsciiEncoded( 3750 line.substring(SSID_STR.length())); 3751 } else if (line.startsWith(IE_STR)) { 3752 infoElements = line; 3753 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3754 if (anqpLines == null) { 3755 anqpLines = new ArrayList<>(); 3756 } 3757 anqpLines.add(line); 3758 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3759 if (bssid != null) { 3760 try { 3761 NetworkDetail networkDetail = 3762 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3763 3764 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3765 if (!xssid.equals(networkDetail.getSSID())) { 3766 Log.d("HS2J", "Inconsistency: SSID: '" + xssid + 3767 "' vs '" + networkDetail.getSSID() + "': " + infoElements); 3768 } 3769 3770 if (networkDetail.hasInterworking()) { 3771 Log.d("HS2J", "HSNwk: '" + networkDetail); 3772 } 3773 3774 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3775 if (scanDetail != null) { 3776 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3777 flags, freq, tsf); 3778 } else { 3779 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3780 flags, level, freq, tsf); 3781 mScanResultCache.put(networkDetail, scanDetail); 3782 } 3783 3784 mNumScanResultsReturned++; // Keep track of how many scan results we got 3785 // as part of this scan's processing 3786 mScanResults.add(scanDetail); 3787 } catch (IllegalArgumentException iae) { 3788 Log.d("HS2J", "Failed to parse information elements: " + iae); 3789 } 3790 } 3791 bssid = null; 3792 level = 0; 3793 freq = 0; 3794 tsf = 0; 3795 flags = ""; 3796 wifiSsid = null; 3797 infoElements = null; 3798 anqpLines = null; 3799 } 3800 } 3801 } 3802 3803 boolean attemptAutoJoin = true; 3804 SupplicantState state = mWifiInfo.getSupplicantState(); 3805 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3806 if (getCurrentState() == mRoamingState 3807 || getCurrentState() == mObtainingIpState 3808 || getCurrentState() == mScanModeState 3809 || getCurrentState() == mDisconnectingState 3810 || (getCurrentState() == mConnectedState 3811 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3812 || linkDebouncing 3813 || state == SupplicantState.ASSOCIATING 3814 || state == SupplicantState.AUTHENTICATING 3815 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3816 || state == SupplicantState.GROUP_HANDSHAKE 3817 || (/* keep autojoin enabled if user has manually selected a wifi network, 3818 so as to make sure we reliably remain connected to this network */ 3819 mConnectionRequests == 0 && selection == null)) { 3820 // Dont attempt auto-joining again while we are already attempting to join 3821 // and/or obtaining Ip address 3822 attemptAutoJoin = false; 3823 } 3824 if (DBG) { 3825 if (selection == null) { 3826 selection = "<none>"; 3827 } 3828 loge("wifi setScanResults state" + getCurrentState() 3829 + " sup_state=" + state 3830 + " debouncing=" + linkDebouncing 3831 + " mConnectionRequests=" + mConnectionRequests 3832 + " selection=" + selection); 3833 } 3834 if (attemptAutoJoin) { 3835 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3836 } 3837 // Loose last selected configuration if we have been disconnected for 5 minutes 3838 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3839 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3840 } 3841 3842 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3843 synchronized (mScanResultCache) { 3844 // AutoJoincontroller will directly acces the scan result list and update it with 3845 // ScanResult status 3846 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3847 } 3848 } 3849 if (linkDebouncing) { 3850 // If debouncing, we dont re-select a SSID or BSSID hence 3851 // there is no need to call the network selection code 3852 // in WifiAutoJoinController, instead, 3853 // just try to reconnect to the same SSID by triggering a roam 3854 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3855 } 3856 } 3857 3858 /* 3859 * Fetch RSSI, linkspeed, and frequency on current connection 3860 */ 3861 private void fetchRssiLinkSpeedAndFrequencyNative() { 3862 int newRssi = -1; 3863 int newLinkSpeed = -1; 3864 int newFrequency = -1; 3865 3866 String signalPoll = mWifiNative.signalPoll(); 3867 3868 if (signalPoll != null) { 3869 String[] lines = signalPoll.split("\n"); 3870 for (String line : lines) { 3871 String[] prop = line.split("="); 3872 if (prop.length < 2) continue; 3873 try { 3874 if (prop[0].equals("RSSI")) { 3875 newRssi = Integer.parseInt(prop[1]); 3876 } else if (prop[0].equals("LINKSPEED")) { 3877 newLinkSpeed = Integer.parseInt(prop[1]); 3878 } else if (prop[0].equals("FREQUENCY")) { 3879 newFrequency = Integer.parseInt(prop[1]); 3880 } 3881 } catch (NumberFormatException e) { 3882 //Ignore, defaults on rssi and linkspeed are assigned 3883 } 3884 } 3885 } 3886 3887 if (PDBG) { 3888 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3889 + Integer.toString(newRssi) + " linkspeed=" 3890 + Integer.toString(newLinkSpeed)); 3891 } 3892 3893 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3894 // screen out invalid values 3895 /* some implementations avoid negative values by adding 256 3896 * so we need to adjust for that here. 3897 */ 3898 if (newRssi > 0) newRssi -= 256; 3899 mWifiInfo.setRssi(newRssi); 3900 /* 3901 * Rather then sending the raw RSSI out every time it 3902 * changes, we precalculate the signal level that would 3903 * be displayed in the status bar, and only send the 3904 * broadcast if that much more coarse-grained number 3905 * changes. This cuts down greatly on the number of 3906 * broadcasts, at the cost of not informing others 3907 * interested in RSSI of all the changes in signal 3908 * level. 3909 */ 3910 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3911 if (newSignalLevel != mLastSignalLevel) { 3912 sendRssiChangeBroadcast(newRssi); 3913 } 3914 mLastSignalLevel = newSignalLevel; 3915 } else { 3916 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3917 } 3918 3919 if (newLinkSpeed != -1) { 3920 mWifiInfo.setLinkSpeed(newLinkSpeed); 3921 } 3922 if (newFrequency > 0) { 3923 if (ScanResult.is5GHz(newFrequency)) { 3924 mWifiConnectionStatistics.num5GhzConnected++; 3925 } 3926 if (ScanResult.is24GHz(newFrequency)) { 3927 mWifiConnectionStatistics.num24GhzConnected++; 3928 } 3929 mWifiInfo.setFrequency(newFrequency); 3930 } 3931 mWifiConfigStore.updateConfiguration(mWifiInfo); 3932 } 3933 3934 /** 3935 * Determine if we need to switch network: 3936 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3937 * - match the uregncy of the switch versus the packet usage at the interface 3938 */ 3939 boolean shouldSwitchNetwork(int networkDelta) { 3940 int delta; 3941 if (networkDelta <= 0) { 3942 return false; 3943 } 3944 delta = networkDelta; 3945 if (mWifiInfo != null) { 3946 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3947 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3948 // If AutoJoin while associated is not enabled, 3949 // we should never switch network when already associated 3950 delta = -1000; 3951 } else { 3952 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3953 // TODO: at the interface. We should also discriminate between ucast and mcast, 3954 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3955 // TODO: broadcasts 3956 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3957 delta -= 999; 3958 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3959 delta -= 6; 3960 } 3961 loge("WifiStateMachine shouldSwitchNetwork " 3962 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3963 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3964 + " delta " + networkDelta + " -> " + delta); 3965 } 3966 } else { 3967 loge("WifiStateMachine shouldSwitchNetwork " 3968 + " delta " + networkDelta + " -> " + delta); 3969 } 3970 if (delta > 0) { 3971 return true; 3972 } 3973 return false; 3974 } 3975 3976 // Polling has completed, hence we wont have a score anymore 3977 private void cleanWifiScore() { 3978 mWifiInfo.txBadRate = 0; 3979 mWifiInfo.txSuccessRate = 0; 3980 mWifiInfo.txRetriesRate = 0; 3981 mWifiInfo.rxSuccessRate = 0; 3982 } 3983 3984 int mBadLinkspeedcount = 0; 3985 3986 // For debug, provide information about the last scoring operation 3987 String wifiScoringReport = null; 3988 3989 private void calculateWifiScore(WifiLinkLayerStats stats) { 3990 StringBuilder sb = new StringBuilder(); 3991 3992 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3993 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3994 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3995 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3996 < mWifiConfigStore.badLinkSpeed5); 3997 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3998 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3999 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 4000 >= mWifiConfigStore.goodLinkSpeed5); 4001 4002 if (isBadLinkspeed) { 4003 if (mBadLinkspeedcount < 6) 4004 mBadLinkspeedcount++; 4005 } else { 4006 if (mBadLinkspeedcount > 0) 4007 mBadLinkspeedcount--; 4008 } 4009 4010 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 4011 if (isGoodLinkspeed) sb.append(" gl"); 4012 4013 /** 4014 * We want to make sure that we use the 24GHz RSSI thresholds if 4015 * there are 2.4GHz scan results 4016 * otherwise we end up lowering the score based on 5GHz values 4017 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 4018 * We also might unblacklist the configuation based on 2.4GHz 4019 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 4020 */ 4021 boolean use24Thresholds = false; 4022 boolean homeNetworkBoost = false; 4023 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 4024 ScanDetailCache scanDetailCache = 4025 mWifiConfigStore.getScanDetailCache(currentConfiguration); 4026 if (currentConfiguration != null && scanDetailCache != null) { 4027 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 4028 if (currentConfiguration.visibility != null) { 4029 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 4030 && currentConfiguration.visibility.rssi24 4031 >= (currentConfiguration.visibility.rssi5 - 2)) { 4032 use24Thresholds = true; 4033 } 4034 } 4035 if (scanDetailCache.size() <= 6 4036 && currentConfiguration.allowedKeyManagement.cardinality() == 1 4037 && currentConfiguration.allowedKeyManagement. 4038 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 4039 // A PSK network with less than 6 known BSSIDs 4040 // This is most likely a home network and thus we want to stick to wifi more 4041 homeNetworkBoost = true; 4042 } 4043 } 4044 if (homeNetworkBoost) sb.append(" hn"); 4045 if (use24Thresholds) sb.append(" u24"); 4046 4047 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 4048 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 4049 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 4050 4051 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 4052 4053 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 4054 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 4055 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 4056 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 4057 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 4058 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 4059 4060 if (isBadRSSI) sb.append(" br"); 4061 if (isLowRSSI) sb.append(" lr"); 4062 if (isHighRSSI) sb.append(" hr"); 4063 4064 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 4065 if (currentConfiguration != null && 4066 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 4067 if (isBadRSSI) { 4068 currentConfiguration.numTicksAtBadRSSI++; 4069 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 4070 // We remained associated for a compound amount of time while passing 4071 // traffic, hence loose the corresponding user triggered disabled stats 4072 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 4073 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 4074 } 4075 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4076 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4077 } 4078 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4079 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4080 } 4081 currentConfiguration.numTicksAtBadRSSI = 0; 4082 } 4083 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4084 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 4085 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4086 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4087 score = score - 5; 4088 penalizedDueToUserTriggeredDisconnect = 1; 4089 sb.append(" p1"); 4090 } 4091 } else if (isLowRSSI) { 4092 currentConfiguration.numTicksAtLowRSSI++; 4093 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 4094 // We remained associated for a compound amount of time while passing 4095 // traffic, hence loose the corresponding user triggered disabled stats 4096 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 4097 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 4098 } 4099 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4100 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4101 } 4102 currentConfiguration.numTicksAtLowRSSI = 0; 4103 } 4104 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4105 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 4106 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 4107 score = score - 5; 4108 penalizedDueToUserTriggeredDisconnect = 2; 4109 sb.append(" p2"); 4110 } 4111 } else if (!isHighRSSI) { 4112 currentConfiguration.numTicksAtNotHighRSSI++; 4113 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 4114 // We remained associated for a compound amount of time while passing 4115 // traffic, hence loose the corresponding user triggered disabled stats 4116 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4117 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 4118 } 4119 currentConfiguration.numTicksAtNotHighRSSI = 0; 4120 } 4121 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 4122 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 4123 score = score - 5; 4124 penalizedDueToUserTriggeredDisconnect = 3; 4125 sb.append(" p3"); 4126 } 4127 } 4128 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 4129 currentConfiguration.numTicksAtLowRSSI, 4130 currentConfiguration.numTicksAtNotHighRSSI)); 4131 } 4132 4133 if (PDBG) { 4134 String rssiStatus = ""; 4135 if (isBadRSSI) rssiStatus += " badRSSI "; 4136 else if (isHighRSSI) rssiStatus += " highRSSI "; 4137 else if (isLowRSSI) rssiStatus += " lowRSSI "; 4138 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 4139 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 4140 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 4141 + " score=" + Integer.toString(mWifiInfo.score) 4142 + rssiStatus 4143 + " -> txbadrate=" + String.format("%.2f", mWifiInfo.txBadRate) 4144 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 4145 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 4146 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 4147 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 4148 } 4149 4150 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 4151 && (isBadRSSI || isLowRSSI)) { 4152 // Link is stuck 4153 if (mWifiInfo.linkStuckCount < 5) 4154 mWifiInfo.linkStuckCount += 1; 4155 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 4156 if (PDBG) loge(" bad link -> stuck count =" 4157 + Integer.toString(mWifiInfo.linkStuckCount)); 4158 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 4159 if (mWifiInfo.linkStuckCount > 0) 4160 mWifiInfo.linkStuckCount -= 1; 4161 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 4162 if (PDBG) loge(" good link -> stuck count =" 4163 + Integer.toString(mWifiInfo.linkStuckCount)); 4164 } 4165 4166 sb.append(String.format(" [%d", score)); 4167 4168 if (mWifiInfo.linkStuckCount > 1) { 4169 // Once link gets stuck for more than 3 seconds, start reducing the score 4170 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 4171 } 4172 sb.append(String.format(",%d", score)); 4173 4174 if (isBadLinkspeed) { 4175 score -= 4; 4176 if (PDBG) { 4177 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 4178 + " score=" + Integer.toString(score)); 4179 } 4180 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 4181 score += 4; // So as bad rssi alone dont kill us 4182 } 4183 sb.append(String.format(",%d", score)); 4184 4185 if (isBadRSSI) { 4186 if (mWifiInfo.badRssiCount < 7) 4187 mWifiInfo.badRssiCount += 1; 4188 } else if (isLowRSSI) { 4189 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 4190 if (mWifiInfo.badRssiCount > 0) { 4191 // Decrement bad Rssi count 4192 mWifiInfo.badRssiCount -= 1; 4193 } 4194 } else { 4195 mWifiInfo.badRssiCount = 0; 4196 mWifiInfo.lowRssiCount = 0; 4197 } 4198 4199 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount; 4200 sb.append(String.format(",%d", score)); 4201 4202 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 4203 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 4204 + " --> score " + Integer.toString(score)); 4205 4206 4207 if (isHighRSSI) { 4208 score += 5; 4209 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 4210 } 4211 sb.append(String.format(",%d]", score)); 4212 4213 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4214 4215 //sanitize boundaries 4216 if (score > NetworkAgent.WIFI_BASE_SCORE) 4217 score = NetworkAgent.WIFI_BASE_SCORE; 4218 if (score < 0) 4219 score = 0; 4220 4221 //report score 4222 if (score != mWifiInfo.score) { 4223 if (DBG) { 4224 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4225 } 4226 mWifiInfo.score = score; 4227 if (mNetworkAgent != null) { 4228 mNetworkAgent.sendNetworkScore(score); 4229 } 4230 } 4231 wifiScoringReport = sb.toString(); 4232 } 4233 4234 public double getTxPacketRate() { 4235 if (mWifiInfo != null) { 4236 return mWifiInfo.txSuccessRate; 4237 } 4238 return -1; 4239 } 4240 4241 public double getRxPacketRate() { 4242 if (mWifiInfo != null) { 4243 return mWifiInfo.rxSuccessRate; 4244 } 4245 return -1; 4246 } 4247 4248 /** 4249 * Fetch TX packet counters on current connection 4250 */ 4251 private void fetchPktcntNative(RssiPacketCountInfo info) { 4252 String pktcntPoll = mWifiNative.pktcntPoll(); 4253 4254 if (pktcntPoll != null) { 4255 String[] lines = pktcntPoll.split("\n"); 4256 for (String line : lines) { 4257 String[] prop = line.split("="); 4258 if (prop.length < 2) continue; 4259 try { 4260 if (prop[0].equals("TXGOOD")) { 4261 info.txgood = Integer.parseInt(prop[1]); 4262 } else if (prop[0].equals("TXBAD")) { 4263 info.txbad = Integer.parseInt(prop[1]); 4264 } 4265 } catch (NumberFormatException e) { 4266 // Ignore 4267 } 4268 } 4269 } 4270 } 4271 4272 private boolean clearIPv4Address(String iface) { 4273 try { 4274 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4275 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4276 mNwService.setInterfaceConfig(iface, ifcg); 4277 return true; 4278 } catch (RemoteException e) { 4279 return false; 4280 } 4281 } 4282 4283 private boolean isProvisioned(LinkProperties lp) { 4284 return lp.isProvisioned() || 4285 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4286 } 4287 4288 /** 4289 * Updates mLinkProperties by merging information from various sources. 4290 * <p/> 4291 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4292 * netlink, static configuration, ...). When one of these sources of information has updated 4293 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4294 * information that came from other sources. Instead, when one of those sources has new 4295 * information, we update the object that tracks the information from that source and then 4296 * call this method to apply the change to mLinkProperties. 4297 * <p/> 4298 * The information in mLinkProperties is currently obtained as follows: 4299 * - Interface name: set in the constructor. 4300 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4301 * - IPv4 routes, DNS servers, and domains: DHCP. 4302 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4303 * - HTTP proxy: the wifi config store. 4304 */ 4305 private void updateLinkProperties(int reason) { 4306 LinkProperties newLp = new LinkProperties(); 4307 4308 // Interface name and proxy are locally configured. 4309 newLp.setInterfaceName(mInterfaceName); 4310 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4311 4312 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4313 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4314 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4315 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4316 newLp.addRoute(route); 4317 } 4318 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4319 newLp.addDnsServer(dns); 4320 } 4321 4322 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4323 synchronized (mDhcpResultsLock) { 4324 // Even when we're using static configuration, we don't need to look at the config 4325 // store, because static IP configuration also populates mDhcpResults. 4326 if ((mDhcpResults != null)) { 4327 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4328 newLp.addRoute(route); 4329 } 4330 for (InetAddress dns : mDhcpResults.dnsServers) { 4331 newLp.addDnsServer(dns); 4332 } 4333 newLp.setDomains(mDhcpResults.domains); 4334 } 4335 } 4336 4337 final boolean linkChanged = !newLp.equals(mLinkProperties); 4338 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4339 final boolean isProvisioned = isProvisioned(newLp); 4340 final boolean lostIPv4Provisioning = 4341 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4342 final DetailedState detailedState = getNetworkDetailedState(); 4343 4344 if (linkChanged) { 4345 if (DBG) { 4346 log("Link configuration changed for netId: " + mLastNetworkId 4347 + " old: " + mLinkProperties + " new: " + newLp); 4348 } 4349 mLinkProperties = newLp; 4350 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 4351 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 4352 } 4353 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4354 } 4355 4356 if (DBG) { 4357 StringBuilder sb = new StringBuilder(); 4358 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4359 sb.append(" state: " + detailedState); 4360 sb.append(" reason: " + smToString(reason)); 4361 4362 if (mLinkProperties != null) { 4363 if (mLinkProperties.hasIPv4Address()) { 4364 sb.append(" v4"); 4365 } 4366 if (mLinkProperties.hasGlobalIPv6Address()) { 4367 sb.append(" v6"); 4368 } 4369 if (mLinkProperties.hasIPv4DefaultRoute()) { 4370 sb.append(" v4r"); 4371 } 4372 if (mLinkProperties.hasIPv6DefaultRoute()) { 4373 sb.append(" v6r"); 4374 } 4375 if (mLinkProperties.hasIPv4DnsServer()) { 4376 sb.append(" v4dns"); 4377 } 4378 if (mLinkProperties.hasIPv6DnsServer()) { 4379 sb.append(" v6dns"); 4380 } 4381 if (isProvisioned) { 4382 sb.append(" isprov"); 4383 } 4384 } 4385 loge(sb.toString()); 4386 } 4387 4388 // If we just configured or lost IP configuration, do the needful. 4389 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4390 // here because those should only be called if we're attempting to connect or already 4391 // connected, whereas updateLinkProperties can be called at any time. 4392 switch (reason) { 4393 case DhcpStateMachine.DHCP_SUCCESS: 4394 case CMD_STATIC_IP_SUCCESS: 4395 // IPv4 provisioning succeded. Advance to connected state. 4396 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4397 if (!isProvisioned) { 4398 // Can never happen unless DHCP reports success but isProvisioned thinks the 4399 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4400 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4401 // TODO: disconnect here instead. If our configuration is not usable, there's no 4402 // point in staying connected, and if mLinkProperties is out of sync with 4403 // reality, that will cause problems in the future. 4404 loge("IPv4 config succeeded, but not provisioned"); 4405 } 4406 break; 4407 4408 case DhcpStateMachine.DHCP_FAILURE: 4409 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4410 // give up and disconnect. 4411 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4412 if (!isProvisioned || lostIPv4Provisioning) { 4413 sendMessage(CMD_IP_CONFIGURATION_LOST); 4414 } else { 4415 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4416 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4417 4418 // To be sure we don't get stuck with a non-working network if all we had is 4419 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4420 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4421 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4422 // necessary for provisioning, its deletion will cause us to disconnect. 4423 // 4424 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4425 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4426 // not return true if we're using DHCP and don't have an IPv4 default route. So 4427 // for now it's only here for extra redundancy. However, it will increase 4428 // robustness if we move to getting IPv4 routes from netlink as well. 4429 loge("DHCP failure: provisioned, clearing IPv4 address."); 4430 if (!clearIPv4Address(mInterfaceName)) { 4431 sendMessage(CMD_IP_CONFIGURATION_LOST); 4432 } 4433 } 4434 break; 4435 4436 case CMD_STATIC_IP_FAILURE: 4437 // Static configuration was invalid, or an error occurred in applying it. Give up. 4438 sendMessage(CMD_IP_CONFIGURATION_LOST); 4439 break; 4440 4441 case CMD_UPDATE_LINKPROPERTIES: 4442 // IP addresses, DNS servers, etc. changed. Act accordingly. 4443 if (wasProvisioned && !isProvisioned) { 4444 // We no longer have a usable network configuration. Disconnect. 4445 sendMessage(CMD_IP_CONFIGURATION_LOST); 4446 } else if (!wasProvisioned && isProvisioned) { 4447 // We have a usable IPv6-only config. Advance to connected state. 4448 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4449 } 4450 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4451 // If anything has changed and we're already connected, send out a notification. 4452 sendLinkConfigurationChangedBroadcast(); 4453 } 4454 break; 4455 } 4456 } 4457 4458 /** 4459 * Clears all our link properties. 4460 */ 4461 private void clearLinkProperties() { 4462 // Clear the link properties obtained from DHCP and netlink. 4463 synchronized (mDhcpResultsLock) { 4464 if (mDhcpResults != null) { 4465 mDhcpResults.clear(); 4466 } 4467 } 4468 mNetlinkTracker.clearLinkProperties(); 4469 4470 // Now clear the merged link properties. 4471 mLinkProperties.clear(); 4472 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4473 } 4474 4475 /** 4476 * try to update default route MAC address. 4477 */ 4478 private String updateDefaultRouteMacAddress(int timeout) { 4479 String address = null; 4480 for (RouteInfo route : mLinkProperties.getRoutes()) { 4481 if (route.isDefaultRoute() && route.hasGateway()) { 4482 InetAddress gateway = route.getGateway(); 4483 if (gateway instanceof Inet4Address) { 4484 if (PDBG) { 4485 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4486 + gateway.getHostAddress()); 4487 } 4488 address = macAddressFromRoute(gateway.getHostAddress()); 4489 /* The gateway's MAC address is known */ 4490 if ((address == null) && (timeout > 0)) { 4491 boolean reachable = false; 4492 try { 4493 reachable = gateway.isReachable(timeout); 4494 } catch (Exception e) { 4495 loge("updateDefaultRouteMacAddress exception reaching :" 4496 + gateway.getHostAddress()); 4497 4498 } finally { 4499 if (reachable == true) { 4500 4501 address = macAddressFromRoute(gateway.getHostAddress()); 4502 if (PDBG) { 4503 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4504 + gateway.getHostAddress() + " found " + address); 4505 } 4506 } 4507 } 4508 } 4509 if (address != null) { 4510 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4511 } 4512 } 4513 } 4514 } 4515 return address; 4516 } 4517 4518 private void sendScanResultsAvailableBroadcast() { 4519 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4520 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4521 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4522 } 4523 4524 private void sendRssiChangeBroadcast(final int newRssi) { 4525 try { 4526 mBatteryStats.noteWifiRssiChanged(newRssi); 4527 } catch (RemoteException e) { 4528 // Won't happen. 4529 } 4530 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4531 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4532 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4533 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4534 } 4535 4536 private void sendNetworkStateChangeBroadcast(String bssid) { 4537 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4538 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4539 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4540 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4541 if (bssid != null) 4542 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4543 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4544 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4545 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4546 } 4547 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4548 } 4549 4550 private void sendLinkConfigurationChangedBroadcast() { 4551 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4552 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4553 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4554 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4555 } 4556 4557 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4558 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4559 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4560 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4561 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4562 } 4563 4564 /** 4565 * Record the detailed state of a network. 4566 * 4567 * @param state the new {@code DetailedState} 4568 */ 4569 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4570 boolean hidden = false; 4571 4572 if (linkDebouncing || isRoaming()) { 4573 // There is generally a confusion in the system about colluding 4574 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4575 // which leads to multiple confusion. 4576 // 4577 // If link is de-bouncing or roaming, we already have an IP address 4578 // as well we were connected and are doing L2 cycles of 4579 // reconnecting or renewing IP address to check that we still have it 4580 // This L2 link flapping should ne be reflected into the Network state 4581 // which is the state of the WiFi Network visible to Layer 3 and applications 4582 // Note that once debouncing and roaming are completed, we will 4583 // set the Network state to where it should be, or leave it as unchanged 4584 // 4585 hidden = true; 4586 } 4587 if (DBG) { 4588 log("setDetailed state, old =" 4589 + mNetworkInfo.getDetailedState() + " and new state=" + state 4590 + " hidden=" + hidden); 4591 } 4592 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4593 // Always indicate that SSID has changed 4594 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4595 if (DBG) { 4596 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4597 } 4598 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4599 sendNetworkStateChangeBroadcast(null); 4600 } 4601 } 4602 if (hidden == true) { 4603 return false; 4604 } 4605 4606 if (state != mNetworkInfo.getDetailedState()) { 4607 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4608 if (mNetworkAgent != null) { 4609 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4610 } 4611 sendNetworkStateChangeBroadcast(null); 4612 return true; 4613 } 4614 return false; 4615 } 4616 4617 private DetailedState getNetworkDetailedState() { 4618 return mNetworkInfo.getDetailedState(); 4619 } 4620 4621 4622 private SupplicantState handleSupplicantStateChange(Message message) { 4623 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4624 SupplicantState state = stateChangeResult.state; 4625 // Supplicant state change 4626 // [31-13] Reserved for future use 4627 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4628 // 50023 supplicant_state_changed (custom|1|5) 4629 mWifiInfo.setSupplicantState(state); 4630 // Network id is only valid when we start connecting 4631 if (SupplicantState.isConnecting(state)) { 4632 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4633 } else { 4634 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4635 } 4636 4637 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4638 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4639 4640 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4641 4642 return state; 4643 } 4644 4645 /** 4646 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4647 * using the interface, stopping DHCP & disabling interface 4648 */ 4649 private void handleNetworkDisconnect() { 4650 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4651 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4652 + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() 4653 + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() 4654 + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); 4655 4656 4657 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4658 4659 stopDhcp(); 4660 4661 try { 4662 mNwService.clearInterfaceAddresses(mInterfaceName); 4663 mNwService.disableIpv6(mInterfaceName); 4664 } catch (Exception e) { 4665 loge("Failed to clear addresses or disable ipv6" + e); 4666 } 4667 4668 /* Reset data structures */ 4669 mBadLinkspeedcount = 0; 4670 mWifiInfo.reset(); 4671 linkDebouncing = false; 4672 /* Reset roaming parameters */ 4673 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4674 4675 /** 4676 * fullBandConnectedTimeIntervalMilli: 4677 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4678 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4679 * Initialize to sane value = 20 seconds 4680 */ 4681 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4682 4683 setNetworkDetailedState(DetailedState.DISCONNECTED); 4684 if (mNetworkAgent != null) { 4685 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4686 mNetworkAgent = null; 4687 } 4688 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4689 4690 /* Clear network properties */ 4691 clearLinkProperties(); 4692 4693 /* Cend event to CM & network change broadcast */ 4694 sendNetworkStateChangeBroadcast(mLastBssid); 4695 4696 /* Cancel auto roam requests */ 4697 autoRoamSetBSSID(mLastNetworkId, "any"); 4698 4699 mLastBssid = null; 4700 registerDisconnected(); 4701 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4702 } 4703 4704 private void handleSupplicantConnectionLoss() { 4705 /* Socket connection can be lost when we do a graceful shutdown 4706 * or when the driver is hung. Ensure supplicant is stopped here. 4707 */ 4708 mWifiMonitor.killSupplicant(mP2pSupported); 4709 mWifiNative.closeSupplicantConnection(); 4710 sendSupplicantConnectionChangedBroadcast(false); 4711 setWifiState(WIFI_STATE_DISABLED); 4712 } 4713 4714 void handlePreDhcpSetup() { 4715 mDhcpActive = true; 4716 if (!mBluetoothConnectionActive) { 4717 /* 4718 * There are problems setting the Wi-Fi driver's power 4719 * mode to active when bluetooth coexistence mode is 4720 * enabled or sense. 4721 * <p> 4722 * We set Wi-Fi to active mode when 4723 * obtaining an IP address because we've found 4724 * compatibility issues with some routers with low power 4725 * mode. 4726 * <p> 4727 * In order for this active power mode to properly be set, 4728 * we disable coexistence mode until we're done with 4729 * obtaining an IP address. One exception is if we 4730 * are currently connected to a headset, since disabling 4731 * coexistence would interrupt that connection. 4732 */ 4733 // Disable the coexistence mode 4734 mWifiNative.setBluetoothCoexistenceMode( 4735 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4736 } 4737 4738 // Disable power save and suspend optimizations during DHCP 4739 // Note: The order here is important for now. Brcm driver changes 4740 // power settings when we control suspend mode optimizations. 4741 // TODO: Remove this comment when the driver is fixed. 4742 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4743 mWifiNative.setPowerSave(false); 4744 4745 // stopBatchedScan(); 4746 WifiNative.pauseScan(); 4747 4748 // Update link layer stats 4749 getWifiLinkLayerStats(false); 4750 4751 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4752 Message msg = new Message(); 4753 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4754 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4755 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4756 msg.obj = mDhcpStateMachine; 4757 mWifiP2pChannel.sendMessage(msg); 4758 } 4759 4760 4761 private boolean useLegacyDhcpClient() { 4762 return Settings.Global.getInt( 4763 mContext.getContentResolver(), 4764 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4765 } 4766 4767 private void maybeInitDhcpStateMachine() { 4768 if (mDhcpStateMachine == null) { 4769 if (useLegacyDhcpClient()) { 4770 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4771 mContext, WifiStateMachine.this, mInterfaceName); 4772 } else { 4773 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4774 mContext, WifiStateMachine.this, mInterfaceName); 4775 } 4776 } 4777 } 4778 4779 void startDhcp() { 4780 maybeInitDhcpStateMachine(); 4781 mDhcpStateMachine.registerForPreDhcpNotification(); 4782 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4783 } 4784 4785 void renewDhcp() { 4786 maybeInitDhcpStateMachine(); 4787 mDhcpStateMachine.registerForPreDhcpNotification(); 4788 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4789 } 4790 4791 void stopDhcp() { 4792 if (mDhcpStateMachine != null) { 4793 /* In case we were in middle of DHCP operation restore back powermode */ 4794 handlePostDhcpSetup(); 4795 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4796 } 4797 } 4798 4799 void handlePostDhcpSetup() { 4800 /* Restore power save and suspend optimizations */ 4801 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4802 mWifiNative.setPowerSave(true); 4803 4804 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4805 4806 // Set the coexistence mode back to its default value 4807 mWifiNative.setBluetoothCoexistenceMode( 4808 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4809 4810 mDhcpActive = false; 4811 4812 // startBatchedScan(); 4813 WifiNative.restartScan(); 4814 } 4815 4816 void connectScanningService() { 4817 4818 if (mWifiScanner == null) 4819 mWifiScanner = (WifiScanner) mContext.getSystemService(Context.WIFI_SCANNING_SERVICE); 4820 4821 } 4822 4823 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4824 4825 if (PDBG) { 4826 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4827 loge("link address " + dhcpResults.ipAddress); 4828 } 4829 4830 synchronized (mDhcpResultsLock) { 4831 mDhcpResults = dhcpResults; 4832 } 4833 4834 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4835 if (isRoaming()) { 4836 if (addr instanceof Inet4Address) { 4837 int previousAddress = mWifiInfo.getIpAddress(); 4838 int newAddress = NetworkUtils.inetAddressToInt(addr); 4839 if (previousAddress != newAddress) { 4840 loge("handleIPv4Success, roaming and address changed" + 4841 mWifiInfo + " got: " + addr); 4842 } else { 4843 4844 } 4845 } else { 4846 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4847 addr.toString()); 4848 } 4849 } 4850 mWifiInfo.setInetAddress(addr); 4851 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4852 updateLinkProperties(reason); 4853 } 4854 4855 private void handleSuccessfulIpConfiguration() { 4856 mLastSignalLevel = -1; // Force update of signal strength 4857 WifiConfiguration c = getCurrentWifiConfiguration(); 4858 if (c != null) { 4859 // Reset IP failure tracking 4860 c.numConnectionFailures = 0; 4861 4862 // Tell the framework whether the newly connected network is trusted or untrusted. 4863 updateCapabilities(c); 4864 } 4865 if (c != null) { 4866 ScanResult result = getCurrentScanResult(); 4867 if (result == null) { 4868 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4869 c.configKey()); 4870 } else { 4871 // Clear the per BSSID failure count 4872 result.numIpConfigFailures = 0; 4873 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4874 // any BSSID, even though it may already have a non zero ip failure count, 4875 // this will typically happen if the user walks away and come back to his arrea 4876 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4877 // in supplicant for a couple of hours or a day 4878 mWifiNative.clearBlacklist(); 4879 } 4880 } 4881 } 4882 4883 private void handleIPv4Failure(int reason) { 4884 synchronized(mDhcpResultsLock) { 4885 if (mDhcpResults != null) { 4886 mDhcpResults.clear(); 4887 } 4888 } 4889 if (PDBG) { 4890 loge("wifistatemachine handleIPv4Failure"); 4891 } 4892 updateLinkProperties(reason); 4893 } 4894 4895 private void handleIpConfigurationLost() { 4896 mWifiInfo.setInetAddress(null); 4897 mWifiInfo.setMeteredHint(false); 4898 4899 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4900 "DHCP FAILURE", mWifiInfo.getBSSID()); 4901 4902 /* DHCP times out after about 30 seconds, we do a 4903 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4904 */ 4905 mWifiNative.disconnect(); 4906 } 4907 4908 private int convertFrequencyToChannelNumber(int frequency) { 4909 if (frequency >= 2412 && frequency <= 2484) { 4910 return (frequency -2412) / 5 + 1; 4911 } else if (frequency >= 5170 && frequency <=5825) { 4912 //DFS is included 4913 return (frequency -5170) / 5 + 34; 4914 } else { 4915 return 0; 4916 } 4917 } 4918 4919 private int chooseApChannel(int apBand) { 4920 int apChannel; 4921 int[] channel; 4922 4923 if (apBand == 0) { 4924 //for 2.4GHz, we only set the AP at channel 1,6,11 4925 apChannel = 5 * mRandom.nextInt(3) + 1; 4926 } else { 4927 //5G without DFS 4928 channel = mWifiNative.getChannelsForBand(2); 4929 if (channel != null && channel.length > 0) { 4930 apChannel = channel[mRandom.nextInt(channel.length)]; 4931 apChannel = convertFrequencyToChannelNumber(apChannel); 4932 } else { 4933 Log.e(TAG, "SoftAp do not get available channel list"); 4934 apChannel = 0; 4935 } 4936 } 4937 4938 if(DBG) { 4939 Log.d(TAG, "SoftAp set on channel " + apChannel); 4940 } 4941 4942 return apChannel; 4943 } 4944 4945 4946 /* Current design is to not set the config on a running hostapd but instead 4947 * stop and start tethering when user changes config on a running access point 4948 * 4949 * TODO: Add control channel setup through hostapd that allows changing config 4950 * on a running daemon 4951 */ 4952 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4953 // set channel 4954 final WifiConfiguration config = new WifiConfiguration(configuration); 4955 4956 if (DBG) { 4957 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4958 } 4959 //set country code through HAL Here 4960 if (mSetCountryCode != null) { 4961 if(!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 4962 if (config.apBand != 0) { 4963 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 4964 //countrycode is mandatory for 5GHz 4965 sendMessage(CMD_START_AP_FAILURE); 4966 return; 4967 } 4968 } 4969 } else { 4970 if (config.apBand != 0) { 4971 //countrycode is mandatory for 5GHz 4972 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 4973 sendMessage(CMD_START_AP_FAILURE); 4974 return; 4975 } 4976 } 4977 4978 if (config.apChannel == 0) { 4979 config.apChannel = chooseApChannel(config.apBand); 4980 if (config.apChannel == 0) { 4981 //fail to get available channel 4982 sendMessage(CMD_START_AP_FAILURE); 4983 return; 4984 } 4985 } 4986 //turn off interface 4987 if (!mWifiNative.toggleInterface(0)) { 4988 sendMessage(CMD_START_AP_FAILURE); 4989 return; 4990 } 4991 // Start hostapd on a separate thread 4992 new Thread(new Runnable() { 4993 public void run() { 4994 try { 4995 mNwService.startAccessPoint(config, mInterfaceName); 4996 } catch (Exception e) { 4997 loge("Exception in softap start " + e); 4998 try { 4999 mNwService.stopAccessPoint(mInterfaceName); 5000 mNwService.startAccessPoint(config, mInterfaceName); 5001 } catch (Exception e1) { 5002 loge("Exception in softap re-start " + e1); 5003 sendMessage(CMD_START_AP_FAILURE); 5004 return; 5005 } 5006 } 5007 if (DBG) log("Soft AP start successful"); 5008 sendMessage(CMD_START_AP_SUCCESS); 5009 } 5010 }).start(); 5011 } 5012 5013 /* 5014 * Read a MAC address in /proc/arp/table, used by WifistateMachine 5015 * so as to record MAC address of default gateway. 5016 **/ 5017 private String macAddressFromRoute(String ipAddress) { 5018 String macAddress = null; 5019 BufferedReader reader = null; 5020 try { 5021 reader = new BufferedReader(new FileReader("/proc/net/arp")); 5022 5023 // Skip over the line bearing colum titles 5024 String line = reader.readLine(); 5025 5026 while ((line = reader.readLine()) != null) { 5027 String[] tokens = line.split("[ ]+"); 5028 if (tokens.length < 6) { 5029 continue; 5030 } 5031 5032 // ARP column format is 5033 // Address HWType HWAddress Flags Mask IFace 5034 String ip = tokens[0]; 5035 String mac = tokens[3]; 5036 5037 if (ipAddress.equals(ip)) { 5038 macAddress = mac; 5039 break; 5040 } 5041 } 5042 5043 if (macAddress == null) { 5044 loge("Did not find remoteAddress {" + ipAddress + "} in " + 5045 "/proc/net/arp"); 5046 } 5047 5048 } catch (FileNotFoundException e) { 5049 loge("Could not open /proc/net/arp to lookup mac address"); 5050 } catch (IOException e) { 5051 loge("Could not read /proc/net/arp to lookup mac address"); 5052 } finally { 5053 try { 5054 if (reader != null) { 5055 reader.close(); 5056 } 5057 } catch (IOException e) { 5058 // Do nothing 5059 } 5060 } 5061 return macAddress; 5062 5063 } 5064 5065 private class WifiNetworkFactory extends NetworkFactory { 5066 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 5067 super(l, c, TAG, f); 5068 } 5069 5070 @Override 5071 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5072 ++mConnectionRequests; 5073 } 5074 5075 @Override 5076 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5077 --mConnectionRequests; 5078 } 5079 5080 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5081 pw.println("mConnectionRequests " + mConnectionRequests); 5082 } 5083 5084 } 5085 5086 private class UntrustedWifiNetworkFactory extends NetworkFactory { 5087 private int mUntrustedReqCount; 5088 5089 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 5090 super(l, c, tag, f); 5091 } 5092 5093 @Override 5094 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 5095 if (!networkRequest.networkCapabilities.hasCapability( 5096 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5097 if (++mUntrustedReqCount == 1) { 5098 mWifiAutoJoinController.setAllowUntrustedConnections(true); 5099 } 5100 } 5101 } 5102 5103 @Override 5104 protected void releaseNetworkFor(NetworkRequest networkRequest) { 5105 if (!networkRequest.networkCapabilities.hasCapability( 5106 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 5107 if (--mUntrustedReqCount == 0) { 5108 mWifiAutoJoinController.setAllowUntrustedConnections(false); 5109 } 5110 } 5111 } 5112 5113 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 5114 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 5115 } 5116 } 5117 5118 void maybeRegisterNetworkFactory() { 5119 if (mNetworkFactory == null) { 5120 checkAndSetConnectivityInstance(); 5121 if (mCm != null) { 5122 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 5123 NETWORKTYPE, mNetworkCapabilitiesFilter); 5124 mNetworkFactory.setScoreFilter(60); 5125 mNetworkFactory.register(); 5126 5127 // We can't filter untrusted network in the capabilities filter because a trusted 5128 // network would still satisfy a request that accepts untrusted ones. 5129 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 5130 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 5131 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 5132 mUntrustedNetworkFactory.register(); 5133 } 5134 } 5135 } 5136 5137 /******************************************************** 5138 * HSM states 5139 *******************************************************/ 5140 5141 class DefaultState extends State { 5142 @Override 5143 public boolean processMessage(Message message) { 5144 logStateAndMessage(message, getClass().getSimpleName()); 5145 5146 switch (message.what) { 5147 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 5148 AsyncChannel ac = (AsyncChannel) message.obj; 5149 if (ac == mWifiP2pChannel) { 5150 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 5151 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 5152 } else { 5153 loge("WifiP2pService connection failure, error=" + message.arg1); 5154 } 5155 } else { 5156 loge("got HALF_CONNECTED for unknown channel"); 5157 } 5158 break; 5159 } 5160 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 5161 AsyncChannel ac = (AsyncChannel) message.obj; 5162 if (ac == mWifiP2pChannel) { 5163 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 5164 //TODO: Re-establish connection to state machine after a delay 5165 // mWifiP2pChannel.connect(mContext, getHandler(), 5166 // mWifiP2pManager.getMessenger()); 5167 } 5168 break; 5169 } 5170 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5171 mBluetoothConnectionActive = (message.arg1 != 5172 BluetoothAdapter.STATE_DISCONNECTED); 5173 break; 5174 /* Synchronous call returns */ 5175 case CMD_PING_SUPPLICANT: 5176 case CMD_ENABLE_NETWORK: 5177 case CMD_ADD_OR_UPDATE_NETWORK: 5178 case CMD_REMOVE_NETWORK: 5179 case CMD_SAVE_CONFIG: 5180 replyToMessage(message, message.what, FAILURE); 5181 break; 5182 case CMD_GET_CAPABILITY_FREQ: 5183 replyToMessage(message, message.what, null); 5184 break; 5185 case CMD_GET_CONFIGURED_NETWORKS: 5186 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5187 break; 5188 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5189 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 5190 break; 5191 case CMD_ENABLE_RSSI_POLL: 5192 mEnableRssiPolling = (message.arg1 == 1); 5193 break; 5194 case CMD_SET_HIGH_PERF_MODE: 5195 if (message.arg1 == 1) { 5196 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 5197 } else { 5198 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 5199 } 5200 break; 5201 case CMD_BOOT_COMPLETED: 5202 maybeRegisterNetworkFactory(); 5203 break; 5204 case CMD_SET_BATCHED_SCAN: 5205 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 5206 break; 5207 case CMD_POLL_BATCHED_SCAN: 5208 handleBatchedScanPollRequest(); 5209 break; 5210 case CMD_START_NEXT_BATCHED_SCAN: 5211 startNextBatchedScan(); 5212 break; 5213 case CMD_SCREEN_STATE_CHANGED: 5214 handleScreenStateChanged(message.arg1 != 0, 5215 /* startBackgroundScanIfNeeded = */ false); 5216 break; 5217 /* Discard */ 5218 case CMD_START_SCAN: 5219 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5220 break; 5221 case CMD_START_SUPPLICANT: 5222 case CMD_STOP_SUPPLICANT: 5223 case CMD_STOP_SUPPLICANT_FAILED: 5224 case CMD_START_DRIVER: 5225 case CMD_STOP_DRIVER: 5226 case CMD_DELAYED_STOP_DRIVER: 5227 case CMD_DRIVER_START_TIMED_OUT: 5228 case CMD_START_AP: 5229 case CMD_START_AP_SUCCESS: 5230 case CMD_START_AP_FAILURE: 5231 case CMD_STOP_AP: 5232 case CMD_TETHER_STATE_CHANGE: 5233 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5234 case CMD_DISCONNECT: 5235 case CMD_RECONNECT: 5236 case CMD_REASSOCIATE: 5237 case CMD_RELOAD_TLS_AND_RECONNECT: 5238 case WifiMonitor.SUP_CONNECTION_EVENT: 5239 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5240 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5241 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5242 case WifiMonitor.SCAN_RESULTS_EVENT: 5243 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5244 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5245 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5246 case WifiMonitor.WPS_OVERLAP_EVENT: 5247 case CMD_BLACKLIST_NETWORK: 5248 case CMD_CLEAR_BLACKLIST: 5249 case CMD_SET_OPERATIONAL_MODE: 5250 case CMD_SET_COUNTRY_CODE: 5251 case CMD_SET_FREQUENCY_BAND: 5252 case CMD_RSSI_POLL: 5253 case CMD_ENABLE_ALL_NETWORKS: 5254 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5255 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5256 /* Handled by WifiApConfigStore */ 5257 case CMD_SET_AP_CONFIG: 5258 case CMD_SET_AP_CONFIG_COMPLETED: 5259 case CMD_REQUEST_AP_CONFIG: 5260 case CMD_RESPONSE_AP_CONFIG: 5261 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5262 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5263 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5264 case CMD_DISABLE_P2P_RSP: 5265 case WifiMonitor.SUP_REQUEST_IDENTITY: 5266 case CMD_TEST_NETWORK_DISCONNECT: 5267 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5268 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5269 case CMD_TARGET_BSSID: 5270 case CMD_AUTO_CONNECT: 5271 case CMD_AUTO_ROAM: 5272 case CMD_AUTO_SAVE_NETWORK: 5273 case CMD_ASSOCIATED_BSSID: 5274 case CMD_UNWANTED_NETWORK: 5275 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5276 case CMD_ROAM_WATCHDOG_TIMER: 5277 case CMD_DISABLE_EPHEMERAL_NETWORK: 5278 case CMD_GET_MATCHING_CONFIG: 5279 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5280 break; 5281 case DhcpStateMachine.CMD_ON_QUIT: 5282 mDhcpStateMachine = null; 5283 break; 5284 case CMD_SET_SUSPEND_OPT_ENABLED: 5285 if (message.arg1 == 1) { 5286 mSuspendWakeLock.release(); 5287 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5288 } else { 5289 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5290 } 5291 break; 5292 case WifiMonitor.DRIVER_HUNG_EVENT: 5293 setSupplicantRunning(false); 5294 setSupplicantRunning(true); 5295 break; 5296 case WifiManager.CONNECT_NETWORK: 5297 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5298 WifiManager.BUSY); 5299 break; 5300 case WifiManager.FORGET_NETWORK: 5301 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5302 WifiManager.BUSY); 5303 break; 5304 case WifiManager.SAVE_NETWORK: 5305 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5306 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5307 WifiManager.BUSY); 5308 break; 5309 case WifiManager.START_WPS: 5310 replyToMessage(message, WifiManager.WPS_FAILED, 5311 WifiManager.BUSY); 5312 break; 5313 case WifiManager.CANCEL_WPS: 5314 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5315 WifiManager.BUSY); 5316 break; 5317 case WifiManager.DISABLE_NETWORK: 5318 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5319 WifiManager.BUSY); 5320 break; 5321 case WifiManager.RSSI_PKTCNT_FETCH: 5322 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5323 WifiManager.BUSY); 5324 break; 5325 case CMD_GET_SUPPORTED_FEATURES: 5326 if (WifiNative.startHal()) { 5327 int featureSet = WifiNative.getSupportedFeatureSet(); 5328 replyToMessage(message, message.what, featureSet); 5329 } else { 5330 replyToMessage(message, message.what, 0); 5331 } 5332 break; 5333 case CMD_GET_LINK_LAYER_STATS: 5334 // Not supported hence reply with error message 5335 replyToMessage(message, message.what, null); 5336 break; 5337 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5338 NetworkInfo info = (NetworkInfo) message.obj; 5339 mP2pConnected.set(info.isConnected()); 5340 break; 5341 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5342 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5343 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5344 break; 5345 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5346 case CMD_UPDATE_LINKPROPERTIES: 5347 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5348 break; 5349 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5350 case CMD_IP_CONFIGURATION_LOST: 5351 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5352 break; 5353 case CMD_GET_CONNECTION_STATISTICS: 5354 replyToMessage(message, message.what, mWifiConnectionStatistics); 5355 break; 5356 default: 5357 loge("Error! unhandled message" + message); 5358 break; 5359 } 5360 return HANDLED; 5361 } 5362 } 5363 5364 class InitialState extends State { 5365 @Override 5366 public void enter() { 5367 mWifiNative.unloadDriver(); 5368 if (mWifiP2pChannel == null) { 5369 mWifiP2pChannel = new AsyncChannel(); 5370 mWifiP2pChannel.connect(mContext, getHandler(), 5371 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5372 } 5373 5374 if (mWifiApConfigChannel == null) { 5375 mWifiApConfigChannel = new AsyncChannel(); 5376 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5377 mContext, getHandler()); 5378 wifiApConfigStore.loadApConfiguration(); 5379 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5380 wifiApConfigStore.getMessenger()); 5381 } 5382 } 5383 @Override 5384 public boolean processMessage(Message message) { 5385 logStateAndMessage(message, getClass().getSimpleName()); 5386 switch (message.what) { 5387 case CMD_START_SUPPLICANT: 5388 if (mWifiNative.loadDriver()) { 5389 try { 5390 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5391 } catch (Exception e) { 5392 loge("Failed to reload STA firmware " + e); 5393 // Continue 5394 } 5395 5396 try { 5397 // A runtime crash can leave the interface up and 5398 // IP addresses configured, and this affects 5399 // connectivity when supplicant starts up. 5400 // Ensure interface is down and we have no IP 5401 // addresses before a supplicant start. 5402 mNwService.setInterfaceDown(mInterfaceName); 5403 mNwService.clearInterfaceAddresses(mInterfaceName); 5404 5405 // Set privacy extensions 5406 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5407 5408 // IPv6 is enabled only as long as access point is connected since: 5409 // - IPv6 addresses and routes stick around after disconnection 5410 // - kernel is unaware when connected and fails to start IPv6 negotiation 5411 // - kernel can start autoconfiguration when 802.1x is not complete 5412 mNwService.disableIpv6(mInterfaceName); 5413 } catch (RemoteException re) { 5414 loge("Unable to change interface settings: " + re); 5415 } catch (IllegalStateException ie) { 5416 loge("Unable to change interface settings: " + ie); 5417 } 5418 5419 /* Stop a running supplicant after a runtime restart 5420 * Avoids issues with drivers that do not handle interface down 5421 * on a running supplicant properly. 5422 */ 5423 mWifiMonitor.killSupplicant(mP2pSupported); 5424 if(mWifiNative.startSupplicant(mP2pSupported)) { 5425 setWifiState(WIFI_STATE_ENABLING); 5426 if (DBG) log("Supplicant start successful"); 5427 mWifiMonitor.startMonitoring(); 5428 transitionTo(mSupplicantStartingState); 5429 } else { 5430 loge("Failed to start supplicant!"); 5431 } 5432 } else { 5433 loge("Failed to load driver"); 5434 } 5435 break; 5436 case CMD_START_AP: 5437 if (mWifiNative.loadDriver()) { 5438 setWifiApState(WIFI_AP_STATE_ENABLING); 5439 transitionTo(mSoftApStartingState); 5440 } else { 5441 loge("Failed to load driver for softap"); 5442 } 5443 break; 5444 default: 5445 return NOT_HANDLED; 5446 } 5447 return HANDLED; 5448 } 5449 } 5450 5451 class SupplicantStartingState extends State { 5452 private void initializeWpsDetails() { 5453 String detail; 5454 detail = SystemProperties.get("ro.product.name", ""); 5455 if (!mWifiNative.setDeviceName(detail)) { 5456 loge("Failed to set device name " + detail); 5457 } 5458 detail = SystemProperties.get("ro.product.manufacturer", ""); 5459 if (!mWifiNative.setManufacturer(detail)) { 5460 loge("Failed to set manufacturer " + detail); 5461 } 5462 detail = SystemProperties.get("ro.product.model", ""); 5463 if (!mWifiNative.setModelName(detail)) { 5464 loge("Failed to set model name " + detail); 5465 } 5466 detail = SystemProperties.get("ro.product.model", ""); 5467 if (!mWifiNative.setModelNumber(detail)) { 5468 loge("Failed to set model number " + detail); 5469 } 5470 detail = SystemProperties.get("ro.serialno", ""); 5471 if (!mWifiNative.setSerialNumber(detail)) { 5472 loge("Failed to set serial number " + detail); 5473 } 5474 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5475 loge("Failed to set WPS config methods"); 5476 } 5477 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5478 loge("Failed to set primary device type " + mPrimaryDeviceType); 5479 } 5480 } 5481 5482 @Override 5483 public boolean processMessage(Message message) { 5484 logStateAndMessage(message, getClass().getSimpleName()); 5485 5486 switch(message.what) { 5487 case WifiMonitor.SUP_CONNECTION_EVENT: 5488 if (DBG) log("Supplicant connection established"); 5489 setWifiState(WIFI_STATE_ENABLED); 5490 mSupplicantRestartCount = 0; 5491 /* Reset the supplicant state to indicate the supplicant 5492 * state is not known at this time */ 5493 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5494 /* Initialize data structures */ 5495 mLastBssid = null; 5496 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5497 mLastSignalLevel = -1; 5498 5499 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5500 mWifiNative.enableSaveConfig(); 5501 mWifiConfigStore.loadAndEnableAllNetworks(); 5502 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5503 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5504 } 5505 if (mWifiConfigStore.associatedPartialScanPeriodMilli.get() < 0) { 5506 mWifiConfigStore.associatedPartialScanPeriodMilli.set(0); 5507 } 5508 initializeWpsDetails(); 5509 5510 sendSupplicantConnectionChangedBroadcast(true); 5511 transitionTo(mDriverStartedState); 5512 break; 5513 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5514 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5515 loge("Failed to setup control channel, restart supplicant"); 5516 mWifiMonitor.killSupplicant(mP2pSupported); 5517 transitionTo(mInitialState); 5518 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5519 } else { 5520 loge("Failed " + mSupplicantRestartCount + 5521 " times to start supplicant, unload driver"); 5522 mSupplicantRestartCount = 0; 5523 setWifiState(WIFI_STATE_UNKNOWN); 5524 transitionTo(mInitialState); 5525 } 5526 break; 5527 case CMD_START_SUPPLICANT: 5528 case CMD_STOP_SUPPLICANT: 5529 case CMD_START_AP: 5530 case CMD_STOP_AP: 5531 case CMD_START_DRIVER: 5532 case CMD_STOP_DRIVER: 5533 case CMD_SET_OPERATIONAL_MODE: 5534 case CMD_SET_COUNTRY_CODE: 5535 case CMD_SET_FREQUENCY_BAND: 5536 case CMD_START_PACKET_FILTERING: 5537 case CMD_STOP_PACKET_FILTERING: 5538 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5539 deferMessage(message); 5540 break; 5541 default: 5542 return NOT_HANDLED; 5543 } 5544 return HANDLED; 5545 } 5546 } 5547 5548 class SupplicantStartedState extends State { 5549 @Override 5550 public void enter() { 5551 /* Wifi is available as long as we have a connection to supplicant */ 5552 mNetworkInfo.setIsAvailable(true); 5553 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5554 5555 int defaultInterval = mContext.getResources().getInteger( 5556 R.integer.config_wifi_supplicant_scan_interval); 5557 5558 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5559 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5560 defaultInterval); 5561 5562 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5563 mWifiNative.setExternalSim(true); 5564 5565 /* turn on use of DFS channels */ 5566 WifiNative.setDfsFlag(true); 5567 5568 /* set country code */ 5569 setCountryCode(); 5570 5571 setRandomMacOui(); 5572 mWifiNative.enableAutoConnect(false); 5573 } 5574 5575 @Override 5576 public boolean processMessage(Message message) { 5577 logStateAndMessage(message, getClass().getSimpleName()); 5578 5579 switch(message.what) { 5580 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5581 if (mP2pSupported) { 5582 transitionTo(mWaitForP2pDisableState); 5583 } else { 5584 transitionTo(mSupplicantStoppingState); 5585 } 5586 break; 5587 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5588 loge("Connection lost, restart supplicant"); 5589 handleSupplicantConnectionLoss(); 5590 handleNetworkDisconnect(); 5591 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5592 if (mP2pSupported) { 5593 transitionTo(mWaitForP2pDisableState); 5594 } else { 5595 transitionTo(mInitialState); 5596 } 5597 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5598 break; 5599 case WifiMonitor.SCAN_RESULTS_EVENT: 5600 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5601 closeRadioScanStats(); 5602 noteScanEnd(); 5603 setScanResults(); 5604 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5605 /* Just updated results from full scan, let apps know about this */ 5606 sendScanResultsAvailableBroadcast(); 5607 } 5608 mSendScanResultsBroadcast = false; 5609 mIsScanOngoing = false; 5610 mIsFullScanOngoing = false; 5611 if (mBufferedScanMsg.size() > 0) 5612 sendMessage(mBufferedScanMsg.remove()); 5613 break; 5614 case CMD_PING_SUPPLICANT: 5615 boolean ok = mWifiNative.ping(); 5616 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5617 break; 5618 case CMD_GET_CAPABILITY_FREQ: 5619 String freqs = mWifiNative.getFreqCapability(); 5620 replyToMessage(message, message.what, freqs); 5621 break; 5622 case CMD_START_AP: 5623 /* Cannot start soft AP while in client mode */ 5624 loge("Failed to start soft AP with a running supplicant"); 5625 setWifiApState(WIFI_AP_STATE_FAILED); 5626 break; 5627 case CMD_SET_OPERATIONAL_MODE: 5628 mOperationalMode = message.arg1; 5629 mWifiConfigStore. 5630 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5631 break; 5632 case CMD_TARGET_BSSID: 5633 // Trying to associate to this BSSID 5634 if (message.obj != null) { 5635 mTargetRoamBSSID = (String) message.obj; 5636 } 5637 break; 5638 case CMD_GET_LINK_LAYER_STATS: 5639 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5640 if (stats == null) { 5641 // When firmware doesnt support link layer stats, return an empty object 5642 stats = new WifiLinkLayerStats(); 5643 } 5644 replyToMessage(message, message.what, stats); 5645 break; 5646 case CMD_SET_COUNTRY_CODE: 5647 String country = (String) message.obj; 5648 5649 final boolean persist = (message.arg2 == 1); 5650 final int sequence = message.arg1; 5651 5652 if (sequence != mCountryCodeSequence.get()) { 5653 if (DBG) log("set country code ignored due to sequnce num"); 5654 break; 5655 } 5656 if (DBG) log("set country code " + country); 5657 country = country.toUpperCase(Locale.ROOT); 5658 5659 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5660 if (mWifiNative.setCountryCode(country)) { 5661 mDriverSetCountryCode = country; 5662 } else { 5663 loge("Failed to set country code " + country); 5664 } 5665 } 5666 5667 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5668 break; 5669 default: 5670 return NOT_HANDLED; 5671 } 5672 return HANDLED; 5673 } 5674 5675 @Override 5676 public void exit() { 5677 mNetworkInfo.setIsAvailable(false); 5678 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5679 } 5680 } 5681 5682 class SupplicantStoppingState extends State { 5683 @Override 5684 public void enter() { 5685 /* Send any reset commands to supplicant before shutting it down */ 5686 handleNetworkDisconnect(); 5687 if (mDhcpStateMachine != null) { 5688 mDhcpStateMachine.doQuit(); 5689 } 5690 5691 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5692 if (suppState == null) suppState = "unknown"; 5693 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5694 if (p2pSuppState == null) p2pSuppState = "unknown"; 5695 5696 loge("SupplicantStoppingState: stopSupplicant " 5697 + " init.svc.wpa_supplicant=" + suppState 5698 + " init.svc.p2p_supplicant=" + p2pSuppState); 5699 mWifiMonitor.stopSupplicant(); 5700 5701 /* Send ourselves a delayed message to indicate failure after a wait time */ 5702 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5703 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5704 setWifiState(WIFI_STATE_DISABLING); 5705 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5706 } 5707 @Override 5708 public boolean processMessage(Message message) { 5709 logStateAndMessage(message, getClass().getSimpleName()); 5710 5711 switch(message.what) { 5712 case WifiMonitor.SUP_CONNECTION_EVENT: 5713 loge("Supplicant connection received while stopping"); 5714 break; 5715 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5716 if (DBG) log("Supplicant connection lost"); 5717 handleSupplicantConnectionLoss(); 5718 transitionTo(mInitialState); 5719 break; 5720 case CMD_STOP_SUPPLICANT_FAILED: 5721 if (message.arg1 == mSupplicantStopFailureToken) { 5722 loge("Timed out on a supplicant stop, kill and proceed"); 5723 handleSupplicantConnectionLoss(); 5724 transitionTo(mInitialState); 5725 } 5726 break; 5727 case CMD_START_SUPPLICANT: 5728 case CMD_STOP_SUPPLICANT: 5729 case CMD_START_AP: 5730 case CMD_STOP_AP: 5731 case CMD_START_DRIVER: 5732 case CMD_STOP_DRIVER: 5733 case CMD_SET_OPERATIONAL_MODE: 5734 case CMD_SET_COUNTRY_CODE: 5735 case CMD_SET_FREQUENCY_BAND: 5736 case CMD_START_PACKET_FILTERING: 5737 case CMD_STOP_PACKET_FILTERING: 5738 deferMessage(message); 5739 break; 5740 default: 5741 return NOT_HANDLED; 5742 } 5743 return HANDLED; 5744 } 5745 } 5746 5747 class DriverStartingState extends State { 5748 private int mTries; 5749 @Override 5750 public void enter() { 5751 mTries = 1; 5752 /* Send ourselves a delayed message to start driver a second time */ 5753 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5754 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5755 } 5756 @Override 5757 public boolean processMessage(Message message) { 5758 logStateAndMessage(message, getClass().getSimpleName()); 5759 5760 switch(message.what) { 5761 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5762 SupplicantState state = handleSupplicantStateChange(message); 5763 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5764 * a state that indicates driver has started, it is ready to 5765 * receive driver commands 5766 */ 5767 if (SupplicantState.isDriverActive(state)) { 5768 transitionTo(mDriverStartedState); 5769 } 5770 break; 5771 case CMD_DRIVER_START_TIMED_OUT: 5772 if (message.arg1 == mDriverStartToken) { 5773 if (mTries >= 2) { 5774 loge("Failed to start driver after " + mTries); 5775 transitionTo(mDriverStoppedState); 5776 } else { 5777 loge("Driver start failed, retrying"); 5778 mWakeLock.acquire(); 5779 mWifiNative.startDriver(); 5780 mWakeLock.release(); 5781 5782 ++mTries; 5783 /* Send ourselves a delayed message to start driver again */ 5784 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5785 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5786 } 5787 } 5788 break; 5789 /* Queue driver commands & connection events */ 5790 case CMD_START_DRIVER: 5791 case CMD_STOP_DRIVER: 5792 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5793 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5794 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5795 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5796 case WifiMonitor.WPS_OVERLAP_EVENT: 5797 case CMD_SET_COUNTRY_CODE: 5798 case CMD_SET_FREQUENCY_BAND: 5799 case CMD_START_PACKET_FILTERING: 5800 case CMD_STOP_PACKET_FILTERING: 5801 case CMD_START_SCAN: 5802 case CMD_DISCONNECT: 5803 case CMD_REASSOCIATE: 5804 case CMD_RECONNECT: 5805 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5806 deferMessage(message); 5807 break; 5808 case WifiMonitor.SCAN_RESULTS_EVENT: 5809 // Loose scan results obtained in Driver Starting state, they can only confuse 5810 // the state machine 5811 break; 5812 default: 5813 return NOT_HANDLED; 5814 } 5815 return HANDLED; 5816 } 5817 } 5818 5819 class DriverStartedState extends State { 5820 @Override 5821 public void enter() { 5822 5823 if (PDBG) { 5824 loge("DriverStartedState enter"); 5825 } 5826 if (VDBG) { 5827 mWifiLogger.startLoggingAllBuffer(3, 0, 60, 0); 5828 mWifiLogger.getAllRingBufferData(); 5829 } 5830 mIsRunning = true; 5831 mInDelayedStop = false; 5832 mDelayedStopCounter++; 5833 updateBatteryWorkSource(null); 5834 /** 5835 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5836 * When this mode is on, some of the low-level scan parameters used by the 5837 * driver are changed to reduce interference with bluetooth 5838 */ 5839 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5840 /* set frequency band of operation */ 5841 setFrequencyBand(); 5842 /* initialize network state */ 5843 setNetworkDetailedState(DetailedState.DISCONNECTED); 5844 5845 /* Remove any filtering on Multicast v6 at start */ 5846 mWifiNative.stopFilteringMulticastV6Packets(); 5847 5848 /* Reset Multicast v4 filtering state */ 5849 if (mFilteringMulticastV4Packets.get()) { 5850 mWifiNative.startFilteringMulticastV4Packets(); 5851 } else { 5852 mWifiNative.stopFilteringMulticastV4Packets(); 5853 } 5854 5855 mDhcpActive = false; 5856 5857 startBatchedScan(); 5858 5859 if (mOperationalMode != CONNECT_MODE) { 5860 mWifiNative.disconnect(); 5861 mWifiConfigStore.disableAllNetworks(); 5862 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5863 setWifiState(WIFI_STATE_DISABLED); 5864 } 5865 transitionTo(mScanModeState); 5866 } else { 5867 5868 // Status pulls in the current supplicant state and network connection state 5869 // events over the monitor connection. This helps framework sync up with 5870 // current supplicant state 5871 // TODO: actually check th supplicant status string and make sure the supplicant 5872 // is in disconnecte4d state. 5873 mWifiNative.status(); 5874 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5875 transitionTo(mDisconnectedState); 5876 } 5877 5878 // We may have missed screen update at boot 5879 if (mScreenBroadcastReceived.get() == false) { 5880 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5881 Context.POWER_SERVICE); 5882 handleScreenStateChanged(powerManager.isScreenOn(), 5883 /* startBackgroundScanIfNeeded = */ false); 5884 } else { 5885 // Set the right suspend mode settings 5886 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5887 && mUserWantsSuspendOpt.get()); 5888 } 5889 mWifiNative.setPowerSave(true); 5890 5891 if (mP2pSupported) { 5892 if (mOperationalMode == CONNECT_MODE) { 5893 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5894 } else { 5895 // P2P statemachine starts in disabled state, and is not enabled until 5896 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5897 // keep it disabled. 5898 } 5899 } 5900 5901 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5902 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5903 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5904 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5905 5906 if (WifiNative.startHal()) { 5907 mHalFeatureSet = WifiNative.getSupportedFeatureSet(); 5908 if ((mHalFeatureSet & WifiManager.WIFI_FEATURE_HAL_EPNO) 5909 == WifiManager.WIFI_FEATURE_HAL_EPNO) { 5910 mAlwaysOnPnoSupported = true; 5911 } 5912 } 5913 5914 if (PDBG) { 5915 loge("Driverstarted State enter done, epno=" + mAlwaysOnPnoSupported 5916 + " feature=" + mHalFeatureSet); 5917 } 5918 } 5919 5920 @Override 5921 public boolean processMessage(Message message) { 5922 logStateAndMessage(message, getClass().getSimpleName()); 5923 5924 switch(message.what) { 5925 case CMD_START_SCAN: 5926 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5927 break; 5928 case CMD_SET_BATCHED_SCAN: 5929 if (recordBatchedScanSettings(message.arg1, message.arg2, 5930 (Bundle) message.obj)) { 5931 if (mBatchedScanSettings != null) { 5932 startBatchedScan(); 5933 } else { 5934 stopBatchedScan(); 5935 } 5936 } 5937 break; 5938 case CMD_SET_FREQUENCY_BAND: 5939 int band = message.arg1; 5940 if (DBG) log("set frequency band " + band); 5941 if (mWifiNative.setBand(band)) { 5942 5943 if (PDBG) loge("did set frequency band " + band); 5944 5945 mFrequencyBand.set(band); 5946 // Flush old data - like scan results 5947 mWifiNative.bssFlush(); 5948 // Fetch the latest scan results when frequency band is set 5949 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5950 5951 if (PDBG) loge("done set frequency band " + band); 5952 5953 } else { 5954 loge("Failed to set frequency band " + band); 5955 } 5956 break; 5957 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5958 mBluetoothConnectionActive = (message.arg1 != 5959 BluetoothAdapter.STATE_DISCONNECTED); 5960 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5961 break; 5962 case CMD_STOP_DRIVER: 5963 int mode = message.arg1; 5964 5965 /* Already doing a delayed stop */ 5966 if (mInDelayedStop) { 5967 if (DBG) log("Already in delayed stop"); 5968 break; 5969 } 5970 /* disconnect right now, but leave the driver running for a bit */ 5971 mWifiConfigStore.disableAllNetworks(); 5972 5973 mInDelayedStop = true; 5974 mDelayedStopCounter++; 5975 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5976 5977 /* send regular delayed shut down */ 5978 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5979 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5980 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5981 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5982 DRIVER_STOP_REQUEST, driverStopIntent, 5983 PendingIntent.FLAG_UPDATE_CURRENT); 5984 5985 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5986 + mDriverStopDelayMs, mDriverStopIntent); 5987 break; 5988 case CMD_START_DRIVER: 5989 if (mInDelayedStop) { 5990 mInDelayedStop = false; 5991 mDelayedStopCounter++; 5992 mAlarmManager.cancel(mDriverStopIntent); 5993 if (DBG) log("Delayed stop ignored due to start"); 5994 if (mOperationalMode == CONNECT_MODE) { 5995 mWifiConfigStore.enableAllNetworks(); 5996 } 5997 } 5998 break; 5999 case CMD_DELAYED_STOP_DRIVER: 6000 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 6001 if (message.arg1 != mDelayedStopCounter) break; 6002 if (getCurrentState() != mDisconnectedState) { 6003 mWifiNative.disconnect(); 6004 handleNetworkDisconnect(); 6005 } 6006 mWakeLock.acquire(); 6007 mWifiNative.stopDriver(); 6008 mWakeLock.release(); 6009 if (mP2pSupported) { 6010 transitionTo(mWaitForP2pDisableState); 6011 } else { 6012 transitionTo(mDriverStoppingState); 6013 } 6014 break; 6015 case CMD_START_PACKET_FILTERING: 6016 if (message.arg1 == MULTICAST_V6) { 6017 mWifiNative.startFilteringMulticastV6Packets(); 6018 } else if (message.arg1 == MULTICAST_V4) { 6019 mWifiNative.startFilteringMulticastV4Packets(); 6020 } else { 6021 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 6022 } 6023 break; 6024 case CMD_STOP_PACKET_FILTERING: 6025 if (message.arg1 == MULTICAST_V6) { 6026 mWifiNative.stopFilteringMulticastV6Packets(); 6027 } else if (message.arg1 == MULTICAST_V4) { 6028 mWifiNative.stopFilteringMulticastV4Packets(); 6029 } else { 6030 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 6031 } 6032 break; 6033 case CMD_SET_SUSPEND_OPT_ENABLED: 6034 if (message.arg1 == 1) { 6035 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 6036 mSuspendWakeLock.release(); 6037 } else { 6038 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 6039 } 6040 break; 6041 case CMD_SET_HIGH_PERF_MODE: 6042 if (message.arg1 == 1) { 6043 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 6044 } else { 6045 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 6046 } 6047 break; 6048 case CMD_ENABLE_TDLS: 6049 if (message.obj != null) { 6050 String remoteAddress = (String) message.obj; 6051 boolean enable = (message.arg1 == 1); 6052 mWifiNative.startTdls(remoteAddress, enable); 6053 } 6054 break; 6055 case WifiMonitor.ANQP_DONE_EVENT: 6056 Log.d("HS2J", String.format("WFSM: ANQP for %016x %s", 6057 (Long)message.obj, message.arg1 != 0 ? "success" : "fail")); 6058 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6059 break; 6060 default: 6061 return NOT_HANDLED; 6062 } 6063 return HANDLED; 6064 } 6065 @Override 6066 public void exit() { 6067 mIsRunning = false; 6068 updateBatteryWorkSource(null); 6069 mScanResults = new ArrayList<>(); 6070 6071 stopBatchedScan(); 6072 6073 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 6074 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 6075 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 6076 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 6077 noteScanEnd(); // wrap up any pending request. 6078 mBufferedScanMsg.clear(); 6079 } 6080 } 6081 6082 class WaitForP2pDisableState extends State { 6083 private State mTransitionToState; 6084 @Override 6085 public void enter() { 6086 switch (getCurrentMessage().what) { 6087 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6088 mTransitionToState = mInitialState; 6089 break; 6090 case CMD_DELAYED_STOP_DRIVER: 6091 mTransitionToState = mDriverStoppingState; 6092 break; 6093 case CMD_STOP_SUPPLICANT: 6094 mTransitionToState = mSupplicantStoppingState; 6095 break; 6096 default: 6097 mTransitionToState = mDriverStoppingState; 6098 break; 6099 } 6100 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 6101 } 6102 @Override 6103 public boolean processMessage(Message message) { 6104 logStateAndMessage(message, getClass().getSimpleName()); 6105 6106 switch(message.what) { 6107 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 6108 transitionTo(mTransitionToState); 6109 break; 6110 /* Defer wifi start/shut and driver commands */ 6111 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6112 case CMD_START_SUPPLICANT: 6113 case CMD_STOP_SUPPLICANT: 6114 case CMD_START_AP: 6115 case CMD_STOP_AP: 6116 case CMD_START_DRIVER: 6117 case CMD_STOP_DRIVER: 6118 case CMD_SET_OPERATIONAL_MODE: 6119 case CMD_SET_COUNTRY_CODE: 6120 case CMD_SET_FREQUENCY_BAND: 6121 case CMD_START_PACKET_FILTERING: 6122 case CMD_STOP_PACKET_FILTERING: 6123 case CMD_START_SCAN: 6124 case CMD_DISCONNECT: 6125 case CMD_REASSOCIATE: 6126 case CMD_RECONNECT: 6127 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6128 deferMessage(message); 6129 break; 6130 default: 6131 return NOT_HANDLED; 6132 } 6133 return HANDLED; 6134 } 6135 } 6136 6137 class DriverStoppingState extends State { 6138 @Override 6139 public boolean processMessage(Message message) { 6140 logStateAndMessage(message, getClass().getSimpleName()); 6141 6142 switch(message.what) { 6143 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6144 SupplicantState state = handleSupplicantStateChange(message); 6145 if (state == SupplicantState.INTERFACE_DISABLED) { 6146 transitionTo(mDriverStoppedState); 6147 } 6148 break; 6149 /* Queue driver commands */ 6150 case CMD_START_DRIVER: 6151 case CMD_STOP_DRIVER: 6152 case CMD_SET_COUNTRY_CODE: 6153 case CMD_SET_FREQUENCY_BAND: 6154 case CMD_START_PACKET_FILTERING: 6155 case CMD_STOP_PACKET_FILTERING: 6156 case CMD_START_SCAN: 6157 case CMD_DISCONNECT: 6158 case CMD_REASSOCIATE: 6159 case CMD_RECONNECT: 6160 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6161 deferMessage(message); 6162 break; 6163 default: 6164 return NOT_HANDLED; 6165 } 6166 return HANDLED; 6167 } 6168 } 6169 6170 class DriverStoppedState extends State { 6171 @Override 6172 public boolean processMessage(Message message) { 6173 logStateAndMessage(message, getClass().getSimpleName()); 6174 switch (message.what) { 6175 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6176 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6177 SupplicantState state = stateChangeResult.state; 6178 // A WEXT bug means that we can be back to driver started state 6179 // unexpectedly 6180 if (SupplicantState.isDriverActive(state)) { 6181 transitionTo(mDriverStartedState); 6182 } 6183 break; 6184 case CMD_START_DRIVER: 6185 mWakeLock.acquire(); 6186 mWifiNative.startDriver(); 6187 mWakeLock.release(); 6188 transitionTo(mDriverStartingState); 6189 break; 6190 default: 6191 return NOT_HANDLED; 6192 } 6193 return HANDLED; 6194 } 6195 } 6196 6197 class ScanModeState extends State { 6198 private int mLastOperationMode; 6199 @Override 6200 public void enter() { 6201 mLastOperationMode = mOperationalMode; 6202 } 6203 @Override 6204 public boolean processMessage(Message message) { 6205 logStateAndMessage(message, getClass().getSimpleName()); 6206 6207 switch(message.what) { 6208 case CMD_SET_OPERATIONAL_MODE: 6209 if (message.arg1 == CONNECT_MODE) { 6210 6211 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6212 setWifiState(WIFI_STATE_ENABLED); 6213 // Load and re-enable networks when going back to enabled state 6214 // This is essential for networks to show up after restore 6215 mWifiConfigStore.loadAndEnableAllNetworks(); 6216 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 6217 } else { 6218 mWifiConfigStore.enableAllNetworks(); 6219 } 6220 6221 // Try autojoining with recent network already present in the cache 6222 // If none are found then trigger a scan which will trigger autojoin 6223 // upon reception of scan results event 6224 if (!mWifiAutoJoinController.attemptAutoJoin()) { 6225 startScan(ENABLE_WIFI, 0, null, null); 6226 } 6227 6228 // Loose last selection choice since user toggled WiFi 6229 mWifiConfigStore. 6230 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6231 6232 mOperationalMode = CONNECT_MODE; 6233 transitionTo(mDisconnectedState); 6234 } else { 6235 // Nothing to do 6236 return HANDLED; 6237 } 6238 break; 6239 // Handle scan. All the connection related commands are 6240 // handled only in ConnectModeState 6241 case CMD_START_SCAN: 6242 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6243 break; 6244 default: 6245 return NOT_HANDLED; 6246 } 6247 return HANDLED; 6248 } 6249 } 6250 6251 6252 String smToString(Message message) { 6253 return smToString(message.what); 6254 } 6255 6256 String smToString(int what) { 6257 String s = "unknown"; 6258 switch (what) { 6259 case WifiMonitor.DRIVER_HUNG_EVENT: 6260 s = "DRIVER_HUNG_EVENT"; 6261 break; 6262 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6263 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6264 break; 6265 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6266 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6267 break; 6268 case CMD_SET_FREQUENCY_BAND: 6269 s = "CMD_SET_FREQUENCY_BAND"; 6270 break; 6271 case CMD_DELAYED_NETWORK_DISCONNECT: 6272 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6273 break; 6274 case CMD_TEST_NETWORK_DISCONNECT: 6275 s = "CMD_TEST_NETWORK_DISCONNECT"; 6276 break; 6277 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6278 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6279 break; 6280 case CMD_DISABLE_EPHEMERAL_NETWORK: 6281 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6282 break; 6283 case CMD_START_DRIVER: 6284 s = "CMD_START_DRIVER"; 6285 break; 6286 case CMD_STOP_DRIVER: 6287 s = "CMD_STOP_DRIVER"; 6288 break; 6289 case CMD_STOP_SUPPLICANT: 6290 s = "CMD_STOP_SUPPLICANT"; 6291 break; 6292 case CMD_STOP_SUPPLICANT_FAILED: 6293 s = "CMD_STOP_SUPPLICANT_FAILED"; 6294 break; 6295 case CMD_START_SUPPLICANT: 6296 s = "CMD_START_SUPPLICANT"; 6297 break; 6298 case CMD_REQUEST_AP_CONFIG: 6299 s = "CMD_REQUEST_AP_CONFIG"; 6300 break; 6301 case CMD_RESPONSE_AP_CONFIG: 6302 s = "CMD_RESPONSE_AP_CONFIG"; 6303 break; 6304 case CMD_TETHER_STATE_CHANGE: 6305 s = "CMD_TETHER_STATE_CHANGE"; 6306 break; 6307 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6308 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6309 break; 6310 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6311 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6312 break; 6313 case CMD_ADD_OR_UPDATE_NETWORK: 6314 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6315 break; 6316 case CMD_REMOVE_NETWORK: 6317 s = "CMD_REMOVE_NETWORK"; 6318 break; 6319 case CMD_ENABLE_NETWORK: 6320 s = "CMD_ENABLE_NETWORK"; 6321 break; 6322 case CMD_ENABLE_ALL_NETWORKS: 6323 s = "CMD_ENABLE_ALL_NETWORKS"; 6324 break; 6325 case CMD_AUTO_CONNECT: 6326 s = "CMD_AUTO_CONNECT"; 6327 break; 6328 case CMD_AUTO_ROAM: 6329 s = "CMD_AUTO_ROAM"; 6330 break; 6331 case CMD_AUTO_SAVE_NETWORK: 6332 s = "CMD_AUTO_SAVE_NETWORK"; 6333 break; 6334 case CMD_BOOT_COMPLETED: 6335 s = "CMD_BOOT_COMPLETED"; 6336 break; 6337 case DhcpStateMachine.CMD_START_DHCP: 6338 s = "CMD_START_DHCP"; 6339 break; 6340 case DhcpStateMachine.CMD_STOP_DHCP: 6341 s = "CMD_STOP_DHCP"; 6342 break; 6343 case DhcpStateMachine.CMD_RENEW_DHCP: 6344 s = "CMD_RENEW_DHCP"; 6345 break; 6346 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6347 s = "CMD_PRE_DHCP_ACTION"; 6348 break; 6349 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6350 s = "CMD_POST_DHCP_ACTION"; 6351 break; 6352 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6353 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6354 break; 6355 case DhcpStateMachine.CMD_ON_QUIT: 6356 s = "CMD_ON_QUIT"; 6357 break; 6358 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6359 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6360 break; 6361 case WifiManager.DISABLE_NETWORK: 6362 s = "WifiManager.DISABLE_NETWORK"; 6363 break; 6364 case CMD_BLACKLIST_NETWORK: 6365 s = "CMD_BLACKLIST_NETWORK"; 6366 break; 6367 case CMD_CLEAR_BLACKLIST: 6368 s = "CMD_CLEAR_BLACKLIST"; 6369 break; 6370 case CMD_SAVE_CONFIG: 6371 s = "CMD_SAVE_CONFIG"; 6372 break; 6373 case CMD_GET_CONFIGURED_NETWORKS: 6374 s = "CMD_GET_CONFIGURED_NETWORKS"; 6375 break; 6376 case CMD_GET_SUPPORTED_FEATURES: 6377 s = "CMD_GET_SUPPORTED_FEATURES"; 6378 break; 6379 case CMD_UNWANTED_NETWORK: 6380 s = "CMD_UNWANTED_NETWORK"; 6381 break; 6382 case CMD_NETWORK_STATUS: 6383 s = "CMD_NETWORK_STATUS"; 6384 break; 6385 case CMD_GET_LINK_LAYER_STATS: 6386 s = "CMD_GET_LINK_LAYER_STATS"; 6387 break; 6388 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6389 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6390 break; 6391 case CMD_DISCONNECT: 6392 s = "CMD_DISCONNECT"; 6393 break; 6394 case CMD_RECONNECT: 6395 s = "CMD_RECONNECT"; 6396 break; 6397 case CMD_REASSOCIATE: 6398 s = "CMD_REASSOCIATE"; 6399 break; 6400 case CMD_GET_CONNECTION_STATISTICS: 6401 s = "CMD_GET_CONNECTION_STATISTICS"; 6402 break; 6403 case CMD_SET_HIGH_PERF_MODE: 6404 s = "CMD_SET_HIGH_PERF_MODE"; 6405 break; 6406 case CMD_SET_COUNTRY_CODE: 6407 s = "CMD_SET_COUNTRY_CODE"; 6408 break; 6409 case CMD_ENABLE_RSSI_POLL: 6410 s = "CMD_ENABLE_RSSI_POLL"; 6411 break; 6412 case CMD_RSSI_POLL: 6413 s = "CMD_RSSI_POLL"; 6414 break; 6415 case CMD_START_PACKET_FILTERING: 6416 s = "CMD_START_PACKET_FILTERING"; 6417 break; 6418 case CMD_STOP_PACKET_FILTERING: 6419 s = "CMD_STOP_PACKET_FILTERING"; 6420 break; 6421 case CMD_SET_SUSPEND_OPT_ENABLED: 6422 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6423 break; 6424 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6425 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6426 break; 6427 case CMD_SET_BATCHED_SCAN: 6428 s = "CMD_SET_BATCHED_SCAN"; 6429 break; 6430 case CMD_START_NEXT_BATCHED_SCAN: 6431 s = "CMD_START_NEXT_BATCHED_SCAN"; 6432 break; 6433 case CMD_POLL_BATCHED_SCAN: 6434 s = "CMD_POLL_BATCHED_SCAN"; 6435 break; 6436 case CMD_UPDATE_LINKPROPERTIES: 6437 s = "CMD_UPDATE_LINKPROPERTIES"; 6438 break; 6439 case CMD_RELOAD_TLS_AND_RECONNECT: 6440 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6441 break; 6442 case WifiManager.CONNECT_NETWORK: 6443 s = "CONNECT_NETWORK"; 6444 break; 6445 case WifiManager.SAVE_NETWORK: 6446 s = "SAVE_NETWORK"; 6447 break; 6448 case WifiManager.FORGET_NETWORK: 6449 s = "FORGET_NETWORK"; 6450 break; 6451 case WifiMonitor.SUP_CONNECTION_EVENT: 6452 s = "SUP_CONNECTION_EVENT"; 6453 break; 6454 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6455 s = "SUP_DISCONNECTION_EVENT"; 6456 break; 6457 case WifiMonitor.SCAN_RESULTS_EVENT: 6458 s = "SCAN_RESULTS_EVENT"; 6459 break; 6460 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6461 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6462 break; 6463 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6464 s = "AUTHENTICATION_FAILURE_EVENT"; 6465 break; 6466 case WifiMonitor.SSID_TEMP_DISABLED: 6467 s = "SSID_TEMP_DISABLED"; 6468 break; 6469 case WifiMonitor.SSID_REENABLED: 6470 s = "SSID_REENABLED"; 6471 break; 6472 case WifiMonitor.WPS_SUCCESS_EVENT: 6473 s = "WPS_SUCCESS_EVENT"; 6474 break; 6475 case WifiMonitor.WPS_FAIL_EVENT: 6476 s = "WPS_FAIL_EVENT"; 6477 break; 6478 case WifiMonitor.SUP_REQUEST_IDENTITY: 6479 s = "SUP_REQUEST_IDENTITY"; 6480 break; 6481 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6482 s = "NETWORK_CONNECTION_EVENT"; 6483 break; 6484 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6485 s = "NETWORK_DISCONNECTION_EVENT"; 6486 break; 6487 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6488 s = "ASSOCIATION_REJECTION_EVENT"; 6489 break; 6490 case CMD_SET_OPERATIONAL_MODE: 6491 s = "CMD_SET_OPERATIONAL_MODE"; 6492 break; 6493 case CMD_START_SCAN: 6494 s = "CMD_START_SCAN"; 6495 break; 6496 case CMD_DISABLE_P2P_RSP: 6497 s = "CMD_DISABLE_P2P_RSP"; 6498 break; 6499 case CMD_DISABLE_P2P_REQ: 6500 s = "CMD_DISABLE_P2P_REQ"; 6501 break; 6502 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6503 s = "GOOD_LINK_DETECTED"; 6504 break; 6505 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6506 s = "POOR_LINK_DETECTED"; 6507 break; 6508 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6509 s = "GROUP_CREATING_TIMED_OUT"; 6510 break; 6511 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6512 s = "P2P_CONNECTION_CHANGED"; 6513 break; 6514 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6515 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6516 break; 6517 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6518 s = "P2P.SET_MIRACAST_MODE"; 6519 break; 6520 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6521 s = "P2P.BLOCK_DISCOVERY"; 6522 break; 6523 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6524 s = "P2P.SET_COUNTRY_CODE"; 6525 break; 6526 case WifiManager.CANCEL_WPS: 6527 s = "CANCEL_WPS"; 6528 break; 6529 case WifiManager.CANCEL_WPS_FAILED: 6530 s = "CANCEL_WPS_FAILED"; 6531 break; 6532 case WifiManager.CANCEL_WPS_SUCCEDED: 6533 s = "CANCEL_WPS_SUCCEDED"; 6534 break; 6535 case WifiManager.START_WPS: 6536 s = "START_WPS"; 6537 break; 6538 case WifiManager.START_WPS_SUCCEEDED: 6539 s = "START_WPS_SUCCEEDED"; 6540 break; 6541 case WifiManager.WPS_FAILED: 6542 s = "WPS_FAILED"; 6543 break; 6544 case WifiManager.WPS_COMPLETED: 6545 s = "WPS_COMPLETED"; 6546 break; 6547 case WifiManager.RSSI_PKTCNT_FETCH: 6548 s = "RSSI_PKTCNT_FETCH"; 6549 break; 6550 case CMD_IP_CONFIGURATION_LOST: 6551 s = "CMD_IP_CONFIGURATION_LOST"; 6552 break; 6553 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6554 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6555 break; 6556 case CMD_STATIC_IP_SUCCESS: 6557 s = "CMD_STATIC_IP_SUCCESSFUL"; 6558 break; 6559 case CMD_STATIC_IP_FAILURE: 6560 s = "CMD_STATIC_IP_FAILURE"; 6561 break; 6562 case DhcpStateMachine.DHCP_SUCCESS: 6563 s = "DHCP_SUCCESS"; 6564 break; 6565 case DhcpStateMachine.DHCP_FAILURE: 6566 s = "DHCP_FAILURE"; 6567 break; 6568 case CMD_TARGET_BSSID: 6569 s = "CMD_TARGET_BSSID"; 6570 break; 6571 case CMD_ASSOCIATED_BSSID: 6572 s = "CMD_ASSOCIATED_BSSID"; 6573 break; 6574 case CMD_ROAM_WATCHDOG_TIMER: 6575 s = "CMD_ROAM_WATCHDOG_TIMER"; 6576 break; 6577 case CMD_SCREEN_STATE_CHANGED: 6578 s = "CMD_SCREEN_STATE_CHANGED"; 6579 break; 6580 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6581 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6582 break; 6583 case CMD_START_PNO: 6584 s = "CMD_START_PNO"; 6585 break; 6586 case CMD_STARTED_PNO_DBG: 6587 s = "CMD_STARTED_PNO_DBG"; 6588 break; 6589 case CMD_PNO_NETWORK_FOUND: 6590 s = "CMD_PNO_NETWORK_FOUND"; 6591 break; 6592 default: 6593 s = "what:" + Integer.toString(what); 6594 break; 6595 } 6596 return s; 6597 } 6598 6599 void registerConnected() { 6600 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6601 long now_ms = System.currentTimeMillis(); 6602 // We are switching away from this configuration, 6603 // hence record the time we were connected last 6604 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6605 if (config != null) { 6606 config.lastConnected = System.currentTimeMillis(); 6607 config.autoJoinBailedDueToLowRssi = false; 6608 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6609 config.numConnectionFailures = 0; 6610 config.numIpConfigFailures = 0; 6611 config.numAuthFailures = 0; 6612 config.numAssociation++; 6613 } 6614 mBadLinkspeedcount = 0; 6615 } 6616 } 6617 6618 void registerDisconnected() { 6619 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6620 long now_ms = System.currentTimeMillis(); 6621 // We are switching away from this configuration, 6622 // hence record the time we were connected last 6623 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6624 if (config != null) { 6625 config.lastDisconnected = System.currentTimeMillis(); 6626 if (config.ephemeral) { 6627 // Remove ephemeral WifiConfigurations from file 6628 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6629 } 6630 } 6631 } 6632 } 6633 6634 void noteWifiDisabledWhileAssociated() { 6635 // We got disabled by user while we were associated, make note of it 6636 int rssi = mWifiInfo.getRssi(); 6637 WifiConfiguration config = getCurrentWifiConfiguration(); 6638 if (getCurrentState() == mConnectedState 6639 && rssi != WifiInfo.INVALID_RSSI 6640 && config != null) { 6641 boolean is24GHz = mWifiInfo.is24GHz(); 6642 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6643 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6644 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6645 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6646 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6647 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6648 if (isBadRSSI) { 6649 // Take note that we got disabled while RSSI was Bad 6650 config.numUserTriggeredWifiDisableLowRSSI++; 6651 } else if (isLowRSSI) { 6652 // Take note that we got disabled while RSSI was Low 6653 config.numUserTriggeredWifiDisableBadRSSI++; 6654 } else if (!isHighRSSI) { 6655 // Take note that we got disabled while RSSI was Not high 6656 config.numUserTriggeredWifiDisableNotHighRSSI++; 6657 } 6658 } 6659 } 6660 6661 WifiConfiguration getCurrentWifiConfiguration() { 6662 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6663 return null; 6664 } 6665 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6666 } 6667 6668 ScanResult getCurrentScanResult() { 6669 WifiConfiguration config = getCurrentWifiConfiguration(); 6670 if (config == null) { 6671 return null; 6672 } 6673 String BSSID = mWifiInfo.getBSSID(); 6674 if (BSSID == null) { 6675 BSSID = mTargetRoamBSSID; 6676 } 6677 ScanDetailCache scanDetailCache = 6678 mWifiConfigStore.getScanDetailCache(config); 6679 6680 if (scanDetailCache == null) { 6681 return null; 6682 } 6683 6684 return scanDetailCache.get(BSSID); 6685 } 6686 6687 String getCurrentBSSID() { 6688 if (linkDebouncing) { 6689 return null; 6690 } 6691 return mLastBssid; 6692 } 6693 6694 class ConnectModeState extends State { 6695 @Override 6696 public boolean processMessage(Message message) { 6697 WifiConfiguration config; 6698 int netId; 6699 boolean ok; 6700 boolean didDisconnect; 6701 String bssid; 6702 String ssid; 6703 NetworkUpdateResult result; 6704 logStateAndMessage(message, getClass().getSimpleName()); 6705 6706 connectScanningService(); 6707 6708 switch (message.what) { 6709 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6710 didBlackListBSSID = false; 6711 bssid = (String) message.obj; 6712 if (bssid == null || TextUtils.isEmpty(bssid)) { 6713 // If BSSID is null, use the target roam BSSID 6714 bssid = mTargetRoamBSSID; 6715 } 6716 if (bssid != null) { 6717 // If we have a BSSID, tell configStore to black list it 6718 synchronized(mScanResultCache) { 6719 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6720 (mLastNetworkId, bssid, false); 6721 } 6722 } 6723 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6724 break; 6725 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6726 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6727 break; 6728 case WifiMonitor.SSID_TEMP_DISABLED: 6729 case WifiMonitor.SSID_REENABLED: 6730 String substr = (String) message.obj; 6731 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6732 "temp-disabled" : "re-enabled"; 6733 loge("ConnectModeState SSID state=" + en + " nid=" 6734 + Integer.toString(message.arg1) + " [" + substr + "]"); 6735 synchronized(mScanResultCache) { 6736 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6737 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6738 } 6739 break; 6740 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6741 SupplicantState state = handleSupplicantStateChange(message); 6742 // A driver/firmware hang can now put the interface in a down state. 6743 // We detect the interface going down and recover from it 6744 if (!SupplicantState.isDriverActive(state)) { 6745 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6746 handleNetworkDisconnect(); 6747 } 6748 log("Detected an interface down, restart driver"); 6749 transitionTo(mDriverStoppedState); 6750 sendMessage(CMD_START_DRIVER); 6751 break; 6752 } 6753 6754 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6755 // when authentication times out after a successful connection, 6756 // we can figure this from the supplicant state. If supplicant 6757 // state is DISCONNECTED, but the mNetworkInfo says we are not 6758 // disconnected, we need to handle a disconnection 6759 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6760 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6761 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6762 handleNetworkDisconnect(); 6763 transitionTo(mDisconnectedState); 6764 } 6765 break; 6766 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6767 if (message.arg1 == 1) { 6768 mWifiNative.disconnect(); 6769 mTemporarilyDisconnectWifi = true; 6770 } else { 6771 mWifiNative.reconnect(); 6772 mTemporarilyDisconnectWifi = false; 6773 } 6774 break; 6775 case CMD_ADD_OR_UPDATE_NETWORK: 6776 config = (WifiConfiguration) message.obj; 6777 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6778 if (res < 0) { 6779 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6780 } else { 6781 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6782 if (curConfig != null && config != null) { 6783 if (curConfig.priority < config.priority 6784 && config.status == WifiConfiguration.Status.ENABLED) { 6785 // Interpret this as a connect attempt 6786 // Set the last selected configuration so as to allow the system to 6787 // stick the last user choice without persisting the choice 6788 mWifiConfigStore.setLastSelectedConfiguration(res); 6789 6790 // Remember time of last connection attempt 6791 lastConnectAttempt = System.currentTimeMillis(); 6792 6793 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6794 6795 // As a courtesy to the caller, trigger a scan now 6796 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6797 } 6798 } 6799 } 6800 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6801 break; 6802 case CMD_REMOVE_NETWORK: 6803 ok = mWifiConfigStore.removeNetwork(message.arg1); 6804 if (!ok) { 6805 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6806 } 6807 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6808 break; 6809 case CMD_ENABLE_NETWORK: 6810 boolean others = message.arg2 == 1; 6811 // Tell autojoin the user did try to select to that network 6812 // However, do NOT persist the choice by bumping the priority of the network 6813 if (others) { 6814 mWifiAutoJoinController. 6815 updateConfigurationHistory(message.arg1, true, false); 6816 // Set the last selected configuration so as to allow the system to 6817 // stick the last user choice without persisting the choice 6818 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6819 6820 // Remember time of last connection attempt 6821 lastConnectAttempt = System.currentTimeMillis(); 6822 6823 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6824 } 6825 // Cancel auto roam requests 6826 autoRoamSetBSSID(message.arg1, "any"); 6827 6828 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6829 if (!ok) { 6830 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6831 } 6832 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6833 break; 6834 case CMD_ENABLE_ALL_NETWORKS: 6835 long time = android.os.SystemClock.elapsedRealtime(); 6836 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6837 mWifiConfigStore.enableAllNetworks(); 6838 mLastEnableAllNetworksTime = time; 6839 } 6840 break; 6841 case WifiManager.DISABLE_NETWORK: 6842 if (mWifiConfigStore.disableNetwork(message.arg1, 6843 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6844 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6845 } else { 6846 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6847 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6848 WifiManager.ERROR); 6849 } 6850 break; 6851 case CMD_DISABLE_EPHEMERAL_NETWORK: 6852 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6853 if (config != null) { 6854 if (config.networkId == mLastNetworkId) { 6855 // Disconnect and let autojoin reselect a new network 6856 sendMessage(CMD_DISCONNECT); 6857 } 6858 } 6859 break; 6860 case CMD_BLACKLIST_NETWORK: 6861 mWifiNative.addToBlacklist((String) message.obj); 6862 break; 6863 case CMD_CLEAR_BLACKLIST: 6864 mWifiNative.clearBlacklist(); 6865 break; 6866 case CMD_SAVE_CONFIG: 6867 ok = mWifiConfigStore.saveConfig(); 6868 6869 if (DBG) loge("wifistatemachine did save config " + ok); 6870 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6871 6872 // Inform the backup manager about a data change 6873 IBackupManager ibm = IBackupManager.Stub.asInterface( 6874 ServiceManager.getService(Context.BACKUP_SERVICE)); 6875 if (ibm != null) { 6876 try { 6877 ibm.dataChanged("com.android.providers.settings"); 6878 } catch (Exception e) { 6879 // Try again later 6880 } 6881 } 6882 break; 6883 case CMD_GET_CONFIGURED_NETWORKS: 6884 replyToMessage(message, message.what, 6885 mWifiConfigStore.getConfiguredNetworks()); 6886 break; 6887 case WifiMonitor.SUP_REQUEST_IDENTITY: 6888 int networkId = message.arg2; 6889 boolean identitySent = false; 6890 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 6891 6892 if (targetWificonfiguration != null 6893 && targetWificonfiguration.enterpriseConfig != null) { 6894 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 6895 } 6896 6897 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 6898 if (targetWificonfiguration != null 6899 && targetWificonfiguration.networkId == networkId 6900 && targetWificonfiguration.allowedKeyManagement 6901 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 6902 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 6903 || eapMethod == WifiEnterpriseConfig.Eap.AKA 6904 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 6905 TelephonyManager tm = (TelephonyManager) 6906 mContext.getSystemService(Context.TELEPHONY_SERVICE); 6907 if (tm != null) { 6908 String imsi = tm.getSubscriberId(); 6909 String mccMnc = ""; 6910 6911 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 6912 mccMnc = tm.getSimOperator(); 6913 6914 String identity = buildIdentity(eapMethod, imsi, mccMnc); 6915 6916 if (!identity.isEmpty()) { 6917 mWifiNative.simIdentityResponse(networkId, identity); 6918 identitySent = true; 6919 } 6920 } 6921 } 6922 if (!identitySent) { 6923 // Supplicant lacks credentials to connect to that network, hence black list 6924 ssid = (String) message.obj; 6925 if (targetWificonfiguration != null && ssid != null 6926 && targetWificonfiguration.SSID != null 6927 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6928 mWifiConfigStore.handleSSIDStateChange( 6929 targetWificonfiguration.networkId, false, 6930 "AUTH_FAILED no identity", null); 6931 } 6932 // Disconnect now, as we don't have any way to fullfill 6933 // the supplicant request. 6934 mWifiConfigStore.setLastSelectedConfiguration( 6935 WifiConfiguration.INVALID_NETWORK_ID); 6936 mWifiNative.disconnect(); 6937 } 6938 break; 6939 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6940 logd("Received SUP_REQUEST_SIM_AUTH"); 6941 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6942 if (requestData != null) { 6943 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6944 handleGsmAuthRequest(requestData); 6945 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 6946 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 6947 handle3GAuthRequest(requestData); 6948 } 6949 } else { 6950 loge("Invalid sim auth request"); 6951 } 6952 break; 6953 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6954 replyToMessage(message, message.what, 6955 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6956 break; 6957 case CMD_GET_MATCHING_CONFIG: 6958 replyToMessage(message, message.what, 6959 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 6960 break; 6961 /* Do a redundant disconnect without transition */ 6962 case CMD_DISCONNECT: 6963 mWifiConfigStore.setLastSelectedConfiguration 6964 (WifiConfiguration.INVALID_NETWORK_ID); 6965 mWifiNative.disconnect(); 6966 break; 6967 case CMD_RECONNECT: 6968 mWifiAutoJoinController.attemptAutoJoin(); 6969 break; 6970 case CMD_REASSOCIATE: 6971 lastConnectAttempt = System.currentTimeMillis(); 6972 mWifiNative.reassociate(); 6973 break; 6974 case CMD_RELOAD_TLS_AND_RECONNECT: 6975 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6976 logd("Reconnecting to give a chance to un-connected TLS networks"); 6977 mWifiNative.disconnect(); 6978 lastConnectAttempt = System.currentTimeMillis(); 6979 mWifiNative.reconnect(); 6980 } 6981 break; 6982 case CMD_AUTO_ROAM: 6983 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6984 return HANDLED; 6985 case CMD_AUTO_CONNECT: 6986 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6987 * associated status to the STATUS command but somehow-someplace still thinks 6988 * it is associated and thus will ignore select/reconnect command with 6989 * following message: 6990 * "Already associated with the selected network - do nothing" 6991 * 6992 * Hence, sends a disconnect to supplicant first. 6993 */ 6994 didDisconnect = false; 6995 if (getCurrentState() != mDisconnectedState) { 6996 /** Supplicant will ignore the reconnect if we are currently associated, 6997 * hence trigger a disconnect 6998 */ 6999 didDisconnect = true; 7000 mWifiNative.disconnect(); 7001 } 7002 7003 /* connect command coming from auto-join */ 7004 config = (WifiConfiguration) message.obj; 7005 netId = message.arg1; 7006 int roam = message.arg2; 7007 loge("CMD_AUTO_CONNECT sup state " 7008 + mSupplicantStateTracker.getSupplicantStateName() 7009 + " my state " + getCurrentState().getName() 7010 + " nid=" + Integer.toString(netId) 7011 + " roam=" + Integer.toString(roam)); 7012 if (config == null) { 7013 loge("AUTO_CONNECT and no config, bail out..."); 7014 break; 7015 } 7016 7017 /* Make sure we cancel any previous roam request */ 7018 autoRoamSetBSSID(netId, config.BSSID); 7019 7020 /* Save the network config */ 7021 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 7022 + " nid=" + Integer.toString(netId)); 7023 result = mWifiConfigStore.saveNetwork(config, -1); 7024 netId = result.getNetworkId(); 7025 loge("CMD_AUTO_CONNECT did save config -> " 7026 + " nid=" + Integer.toString(netId)); 7027 7028 // Make sure the network is enabled, since supplicant will not reenable it 7029 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7030 7031 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 7032 mWifiNative.reconnect()) { 7033 lastConnectAttempt = System.currentTimeMillis(); 7034 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7035 config = mWifiConfigStore.getWifiConfiguration(netId); 7036 if (config != null 7037 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 7038 // If we autojoined a different config than the user selected one, 7039 // it means we could not see the last user selection, 7040 // or that the last user selection was faulty and ended up blacklisted 7041 // for some reason (in which case the user is notified with an error 7042 // message in the Wifi picker), and thus we managed to auto-join away 7043 // from the selected config. -> in that case we need to forget 7044 // the selection because we don't want to abruptly switch back to it. 7045 // 7046 // Note that the user selection is also forgotten after a period of time 7047 // during which the device has been disconnected. 7048 // The default value is 30 minutes : see the code path at bottom of 7049 // setScanResults() function. 7050 mWifiConfigStore. 7051 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7052 } 7053 mAutoRoaming = roam; 7054 if (isRoaming() || linkDebouncing) { 7055 transitionTo(mRoamingState); 7056 } else if (didDisconnect) { 7057 transitionTo(mDisconnectingState); 7058 } else { 7059 /* Already in disconnected state, nothing to change */ 7060 } 7061 } else { 7062 loge("Failed to connect config: " + config + " netId: " + netId); 7063 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7064 WifiManager.ERROR); 7065 break; 7066 } 7067 break; 7068 case WifiManager.CONNECT_NETWORK: 7069 /** 7070 * The connect message can contain a network id passed as arg1 on message or 7071 * or a config passed as obj on message. 7072 * For a new network, a config is passed to create and connect. 7073 * For an existing network, a network id is passed 7074 */ 7075 netId = message.arg1; 7076 config = (WifiConfiguration) message.obj; 7077 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7078 boolean updatedExisting = false; 7079 7080 /* Save the network config */ 7081 if (config != null) { 7082 String configKey = config.configKey(true /* allowCached */); 7083 WifiConfiguration savedConfig = 7084 mWifiConfigStore.getWifiConfiguration(configKey); 7085 if (savedConfig != null) { 7086 // There is an existing config with this netId, but it wasn't exposed 7087 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 7088 // getConfiguredNetworks). Remove those bits and update the config. 7089 config = savedConfig; 7090 loge("CONNECT_NETWORK updating existing config with id=" + 7091 config.networkId + " configKey=" + configKey); 7092 config.ephemeral = false; 7093 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 7094 updatedExisting = true; 7095 } 7096 7097 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 7098 netId = result.getNetworkId(); 7099 } 7100 config = mWifiConfigStore.getWifiConfiguration(netId); 7101 7102 if (config == null) { 7103 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 7104 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 7105 + getCurrentState().getName()); 7106 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7107 WifiManager.ERROR); 7108 break; 7109 } else { 7110 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 7111 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 7112 + " config=" + config.SSID 7113 + " cnid=" + config.networkId 7114 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7115 + " my state " + getCurrentState().getName() 7116 + " uid = " + message.sendingUid 7117 + wasSkipped); 7118 } 7119 7120 autoRoamSetBSSID(netId, "any"); 7121 7122 if (message.sendingUid == Process.WIFI_UID 7123 || message.sendingUid == Process.SYSTEM_UID) { 7124 // As a sanity measure, clear the BSSID in the supplicant network block. 7125 // If system or Wifi Settings want to connect, they will not 7126 // specify the BSSID. 7127 // If an app however had added a BSSID to this configuration, and the BSSID 7128 // was wrong, Then we would forever fail to connect until that BSSID 7129 // is cleaned up. 7130 clearConfigBSSID(config, "CONNECT_NETWORK"); 7131 } 7132 7133 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7134 7135 /* Tell autojoin the user did try to connect to that network */ 7136 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 7137 7138 mWifiConfigStore.setLastSelectedConfiguration(netId); 7139 7140 didDisconnect = false; 7141 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 7142 && mLastNetworkId != netId) { 7143 /** Supplicant will ignore the reconnect if we are currently associated, 7144 * hence trigger a disconnect 7145 */ 7146 didDisconnect = true; 7147 mWifiNative.disconnect(); 7148 } 7149 7150 // Make sure the network is enabled, since supplicant will not reenable it 7151 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7152 7153 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true) && 7154 mWifiNative.reconnect()) { 7155 lastConnectAttempt = System.currentTimeMillis(); 7156 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7157 7158 /* The state tracker handles enabling networks upon completion/failure */ 7159 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 7160 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7161 if (didDisconnect) { 7162 /* Expect a disconnection from the old connection */ 7163 transitionTo(mDisconnectingState); 7164 } else if (updatedExisting && getCurrentState() == mConnectedState && 7165 getCurrentWifiConfiguration().networkId == netId) { 7166 // Update the current set of network capabilities, but stay in the 7167 // current state. 7168 updateCapabilities(config); 7169 } else { 7170 /** 7171 * Directly go to disconnected state where we 7172 * process the connection events from supplicant 7173 **/ 7174 transitionTo(mDisconnectedState); 7175 } 7176 } else { 7177 loge("Failed to connect config: " + config + " netId: " + netId); 7178 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7179 WifiManager.ERROR); 7180 break; 7181 } 7182 break; 7183 case WifiManager.SAVE_NETWORK: 7184 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 7185 // Fall thru 7186 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7187 lastSavedConfigurationAttempt = null; // Used for debug 7188 config = (WifiConfiguration) message.obj; 7189 if (config == null) { 7190 loge("ERROR: SAVE_NETWORK with null configuration" 7191 + mSupplicantStateTracker.getSupplicantStateName() 7192 + " my state " + getCurrentState().getName()); 7193 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7194 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7195 WifiManager.ERROR); 7196 break; 7197 } 7198 lastSavedConfigurationAttempt = new WifiConfiguration(config); 7199 int nid = config.networkId; 7200 loge("SAVE_NETWORK id=" + Integer.toString(nid) 7201 + " config=" + config.SSID 7202 + " nid=" + config.networkId 7203 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 7204 + " my state " + getCurrentState().getName()); 7205 7206 result = mWifiConfigStore.saveNetwork(config, -1); 7207 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 7208 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 7209 if (result.hasIpChanged()) { 7210 // The currently connection configuration was changed 7211 // We switched from DHCP to static or from static to DHCP, or the 7212 // static IP address has changed. 7213 log("Reconfiguring IP on connection"); 7214 // TODO: clear addresses and disable IPv6 7215 // to simplify obtainingIpState. 7216 transitionTo(mObtainingIpState); 7217 } 7218 if (result.hasProxyChanged()) { 7219 log("Reconfiguring proxy on connection"); 7220 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7221 } 7222 } 7223 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7224 if (VDBG) { 7225 loge("Success save network nid=" 7226 + Integer.toString(result.getNetworkId())); 7227 } 7228 7229 synchronized(mScanResultCache) { 7230 /** 7231 * If the command comes from WifiManager, then 7232 * tell autojoin the user did try to modify and save that network, 7233 * and interpret the SAVE_NETWORK as a request to connect 7234 */ 7235 boolean user = message.what == WifiManager.SAVE_NETWORK; 7236 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7237 , user, true); 7238 mWifiAutoJoinController.attemptAutoJoin(); 7239 } 7240 } else { 7241 loge("Failed to save network"); 7242 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7243 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7244 WifiManager.ERROR); 7245 } 7246 break; 7247 case WifiManager.FORGET_NETWORK: 7248 // Debug only, remember last configuration that was forgotten 7249 WifiConfiguration toRemove 7250 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7251 if (toRemove == null) { 7252 lastForgetConfigurationAttempt = null; 7253 } else { 7254 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7255 } 7256 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7257 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7258 } else { 7259 loge("Failed to forget network"); 7260 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7261 WifiManager.ERROR); 7262 } 7263 break; 7264 case WifiManager.START_WPS: 7265 WpsInfo wpsInfo = (WpsInfo) message.obj; 7266 WpsResult wpsResult; 7267 switch (wpsInfo.setup) { 7268 case WpsInfo.PBC: 7269 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7270 break; 7271 case WpsInfo.KEYPAD: 7272 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7273 break; 7274 case WpsInfo.DISPLAY: 7275 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7276 break; 7277 default: 7278 wpsResult = new WpsResult(Status.FAILURE); 7279 loge("Invalid setup for WPS"); 7280 break; 7281 } 7282 mWifiConfigStore.setLastSelectedConfiguration 7283 (WifiConfiguration.INVALID_NETWORK_ID); 7284 if (wpsResult.status == Status.SUCCESS) { 7285 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7286 transitionTo(mWpsRunningState); 7287 } else { 7288 loge("Failed to start WPS with config " + wpsInfo.toString()); 7289 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7290 } 7291 break; 7292 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7293 if (DBG) log("Network connection established"); 7294 mLastNetworkId = message.arg1; 7295 mLastBssid = (String) message.obj; 7296 7297 mWifiInfo.setBSSID(mLastBssid); 7298 mWifiInfo.setNetworkId(mLastNetworkId); 7299 7300 sendNetworkStateChangeBroadcast(mLastBssid); 7301 transitionTo(mObtainingIpState); 7302 break; 7303 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7304 // Calling handleNetworkDisconnect here is redundant because we might already 7305 // have called it when leaving L2ConnectedState to go to disconnecting state 7306 // or thru other path 7307 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7308 // if they are valid, and only in this case call handleNEtworkDisconnect, 7309 // TODO: this should be fixed for a L MR release 7310 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7311 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7312 // at the chip etc... 7313 if (DBG) log("ConnectModeState: Network connection lost "); 7314 handleNetworkDisconnect(); 7315 transitionTo(mDisconnectedState); 7316 break; 7317 case CMD_START_PNO: 7318 // Restart Pno if required, reevaluating the list of networks 7319 startPno(); 7320 break; 7321 case CMD_PNO_NETWORK_FOUND: 7322 processPnoNetworkFound((ScanResult[])message.obj); 7323 break; 7324 default: 7325 return NOT_HANDLED; 7326 } 7327 return HANDLED; 7328 } 7329 } 7330 7331 private void updateCapabilities(WifiConfiguration config) { 7332 if (config.ephemeral) { 7333 mNetworkCapabilities.removeCapability( 7334 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7335 } else { 7336 mNetworkCapabilities.addCapability( 7337 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7338 } 7339 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7340 } 7341 7342 private class WifiNetworkAgent extends NetworkAgent { 7343 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7344 NetworkCapabilities nc, LinkProperties lp, int score) { 7345 super(l, c, TAG, ni, nc, lp, score); 7346 } 7347 protected void unwanted() { 7348 // Ignore if we're not the current networkAgent. 7349 if (this != mNetworkAgent) return; 7350 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7351 + Integer.toString(mWifiInfo.score)); 7352 unwantedNetwork(network_status_unwanted_disconnect); 7353 } 7354 7355 protected void networkStatus(int status) { 7356 if (status == NetworkAgent.INVALID_NETWORK) { 7357 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7358 + Integer.toString(mWifiInfo.score)); 7359 unwantedNetwork(network_status_unwanted_disable_autojoin); 7360 } else if (status == NetworkAgent.VALID_NETWORK) { 7361 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7362 + Integer.toString(mWifiInfo.score)); 7363 doNetworkStatus(status); 7364 } 7365 } 7366 } 7367 7368 void unwantedNetwork(int reason) { 7369 sendMessage(CMD_UNWANTED_NETWORK, reason); 7370 } 7371 7372 void doNetworkStatus(int status) { 7373 sendMessage(CMD_NETWORK_STATUS, status); 7374 } 7375 7376 // rfc4186 & rfc4187: 7377 // create Permanent Identity base on IMSI, 7378 // identity = usernam@realm 7379 // with username = prefix | IMSI 7380 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7381 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7382 String mcc; 7383 String mnc; 7384 String prefix; 7385 7386 if (imsi == null || imsi.isEmpty()) 7387 return ""; 7388 7389 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7390 prefix = "1"; 7391 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7392 prefix = "0"; 7393 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7394 prefix = "6"; 7395 else // not a valide EapMethod 7396 return ""; 7397 7398 /* extract mcc & mnc from mccMnc */ 7399 if (mccMnc != null && !mccMnc.isEmpty()) { 7400 mcc = mccMnc.substring(0, 3); 7401 mnc = mccMnc.substring(3); 7402 if (mnc.length() == 2) 7403 mnc = "0" + mnc; 7404 } else { 7405 // extract mcc & mnc from IMSI, assume mnc size is 3 7406 mcc = imsi.substring(0, 3); 7407 mnc = imsi.substring(3, 6); 7408 } 7409 7410 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7411 } 7412 7413 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7414 if (config == null) 7415 return false; 7416 7417 // We are still seeing a fairly high power consumption triggered by autojoin scans 7418 // Hence do partial scans only for PSK configuration that are roamable since the 7419 // primary purpose of the partial scans is roaming. 7420 // Full badn scans with exponential backoff for the purpose or extended roaming and 7421 // network switching are performed unconditionally. 7422 ScanDetailCache scanDetailCache = 7423 mWifiConfigStore.getScanDetailCache(config); 7424 if (scanDetailCache == null 7425 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7426 || scanDetailCache.size() > 6) { 7427 //return true but to not trigger the scan 7428 return true; 7429 } 7430 HashSet<Integer> channels = mWifiConfigStore.makeChannelList(config, 7431 ONE_HOUR_MILLI, restrictChannelList); 7432 if (channels != null && channels.size() != 0) { 7433 StringBuilder freqs = new StringBuilder(); 7434 boolean first = true; 7435 for (Integer channel : channels) { 7436 if (!first) 7437 freqs.append(","); 7438 freqs.append(channel.toString()); 7439 first = false; 7440 } 7441 //if (DBG) { 7442 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7443 //} 7444 // Call wifi native to start the scan 7445 if (startScanNative( 7446 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7447 freqs.toString())) { 7448 // Only count battery consumption if scan request is accepted 7449 noteScanStart(SCAN_ALARM_SOURCE, null); 7450 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7451 } else { 7452 // used for debug only, mark scan as failed 7453 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7454 } 7455 return true; 7456 } else { 7457 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7458 return false; 7459 } 7460 } 7461 7462 void clearCurrentConfigBSSID(String dbg) { 7463 // Clear the bssid in the current config's network block 7464 WifiConfiguration config = getCurrentWifiConfiguration(); 7465 if (config == null) 7466 return; 7467 clearConfigBSSID(config, dbg); 7468 } 7469 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7470 if (config == null) 7471 return; 7472 if (DBG) { 7473 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7474 + " config.bssid " + config.BSSID); 7475 } 7476 config.autoJoinBSSID = "any"; 7477 config.BSSID = "any"; 7478 if (DBG) { 7479 loge(dbg + " " + config.SSID 7480 + " nid=" + Integer.toString(config.networkId)); 7481 } 7482 mWifiConfigStore.saveWifiConfigBSSID(config); 7483 } 7484 7485 class L2ConnectedState extends State { 7486 @Override 7487 public void enter() { 7488 mRssiPollToken++; 7489 if (mEnableRssiPolling) { 7490 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7491 } 7492 if (mNetworkAgent != null) { 7493 loge("Have NetworkAgent when entering L2Connected"); 7494 setNetworkDetailedState(DetailedState.DISCONNECTED); 7495 } 7496 setNetworkDetailedState(DetailedState.CONNECTING); 7497 7498 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 7499 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7500 } 7501 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7502 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7503 mLinkProperties, 60); 7504 7505 // We must clear the config BSSID, as the wifi chipset may decide to roam 7506 // from this point on and having the BSSID specified in the network block would 7507 // cause the roam to faile and the device to disconnect 7508 clearCurrentConfigBSSID("L2ConnectedState"); 7509 } 7510 7511 @Override 7512 public void exit() { 7513 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7514 // Bug: 15347363 7515 // For paranoia's sake, call handleNetworkDisconnect 7516 // only if BSSID is null or last networkId 7517 // is not invalid. 7518 if (DBG) { 7519 StringBuilder sb = new StringBuilder(); 7520 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7521 if (mLastBssid !=null) { 7522 sb.append(" ").append(mLastBssid); 7523 } 7524 } 7525 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7526 handleNetworkDisconnect(); 7527 } 7528 } 7529 7530 @Override 7531 public boolean processMessage(Message message) { 7532 logStateAndMessage(message, getClass().getSimpleName()); 7533 7534 switch (message.what) { 7535 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7536 handlePreDhcpSetup(); 7537 break; 7538 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7539 handlePostDhcpSetup(); 7540 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7541 if (DBG) log("WifiStateMachine DHCP successful"); 7542 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7543 // We advance to mVerifyingLinkState because handleIPv4Success will call 7544 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7545 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7546 if (DBG) { 7547 int count = -1; 7548 WifiConfiguration config = getCurrentWifiConfiguration(); 7549 if (config != null) { 7550 count = config.numConnectionFailures; 7551 } 7552 log("WifiStateMachine DHCP failure count=" + count); 7553 } 7554 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7555 // As above, we transition to mDisconnectingState via updateLinkProperties. 7556 } 7557 break; 7558 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7559 handleSuccessfulIpConfiguration(); 7560 sendConnectedState(); 7561 transitionTo(mConnectedState); 7562 break; 7563 case CMD_IP_CONFIGURATION_LOST: 7564 // Get Link layer stats so as we get fresh tx packet counters 7565 getWifiLinkLayerStats(true); 7566 handleIpConfigurationLost(); 7567 transitionTo(mDisconnectingState); 7568 break; 7569 case CMD_DISCONNECT: 7570 mWifiNative.disconnect(); 7571 transitionTo(mDisconnectingState); 7572 break; 7573 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7574 if (message.arg1 == 1) { 7575 mWifiNative.disconnect(); 7576 mTemporarilyDisconnectWifi = true; 7577 transitionTo(mDisconnectingState); 7578 } 7579 break; 7580 case CMD_SET_OPERATIONAL_MODE: 7581 if (message.arg1 != CONNECT_MODE) { 7582 sendMessage(CMD_DISCONNECT); 7583 deferMessage(message); 7584 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7585 noteWifiDisabledWhileAssociated(); 7586 } 7587 } 7588 mWifiConfigStore. 7589 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7590 break; 7591 case CMD_SET_COUNTRY_CODE: 7592 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7593 deferMessage(message); 7594 break; 7595 case CMD_START_SCAN: 7596 //if (DBG) { 7597 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7598 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7599 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7600 + " targetRoamBSSID=" + mTargetRoamBSSID 7601 + " RSSI=" + mWifiInfo.getRssi()); 7602 //} 7603 if (message.arg1 == SCAN_ALARM_SOURCE) { 7604 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7605 // not be processed) and restart the scan if needed 7606 boolean shouldScan = 7607 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7608 if (!checkAndRestartDelayedScan(message.arg2, 7609 shouldScan, 7610 mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null)) { 7611 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7612 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7613 + message.arg1 7614 + " " + message.arg2 + ", " + mDelayedScanCounter 7615 + " -> obsolete"); 7616 return HANDLED; 7617 } 7618 if (mP2pConnected.get()) { 7619 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7620 + message.arg1 7621 + " " + message.arg2 + ", " + mDelayedScanCounter 7622 + " ignore because P2P is connected"); 7623 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7624 return HANDLED; 7625 } 7626 boolean tryFullBandScan = false; 7627 boolean restrictChannelList = false; 7628 long now_ms = System.currentTimeMillis(); 7629 if (DBG) { 7630 loge("WifiStateMachine CMD_START_SCAN with age=" 7631 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7632 + " interval=" + fullBandConnectedTimeIntervalMilli 7633 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7634 } 7635 if (mWifiInfo != null) { 7636 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7637 (now_ms - lastFullBandConnectedTimeMilli) 7638 > fullBandConnectedTimeIntervalMilli) { 7639 if (DBG) { 7640 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7641 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7642 + " interval=" + fullBandConnectedTimeIntervalMilli 7643 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7644 } 7645 tryFullBandScan = true; 7646 } 7647 7648 if (mWifiInfo.txSuccessRate > 7649 mWifiConfigStore.maxTxPacketForFullScans 7650 || mWifiInfo.rxSuccessRate > 7651 mWifiConfigStore.maxRxPacketForFullScans) { 7652 // Too much traffic at the interface, hence no full band scan 7653 if (DBG) { 7654 loge("WifiStateMachine CMD_START_SCAN " + 7655 "prevent full band scan due to pkt rate"); 7656 } 7657 tryFullBandScan = false; 7658 } 7659 7660 if (mWifiInfo.txSuccessRate > 7661 mWifiConfigStore.maxTxPacketForPartialScans 7662 || mWifiInfo.rxSuccessRate > 7663 mWifiConfigStore.maxRxPacketForPartialScans) { 7664 // Don't scan if lots of packets are being sent 7665 restrictChannelList = true; 7666 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7667 if (DBG) { 7668 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7669 + " ...and ignore scans" 7670 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7671 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7672 } 7673 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7674 return HANDLED; 7675 } 7676 } 7677 } 7678 7679 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7680 if (DBG) { 7681 loge("WifiStateMachine CMD_START_SCAN full=" + 7682 tryFullBandScan); 7683 } 7684 if (currentConfiguration != null) { 7685 if (fullBandConnectedTimeIntervalMilli 7686 < mWifiConfigStore.associatedPartialScanPeriodMilli.get()) { 7687 // Sanity 7688 fullBandConnectedTimeIntervalMilli 7689 = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 7690 } 7691 if (tryFullBandScan) { 7692 lastFullBandConnectedTimeMilli = now_ms; 7693 if (fullBandConnectedTimeIntervalMilli 7694 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7695 // Increase the interval 7696 fullBandConnectedTimeIntervalMilli 7697 = fullBandConnectedTimeIntervalMilli 7698 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7699 7700 if (DBG) { 7701 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7702 + fullBandConnectedTimeIntervalMilli); 7703 } 7704 } 7705 handleScanRequest( 7706 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7707 } else { 7708 if (!startScanForConfiguration( 7709 currentConfiguration, restrictChannelList)) { 7710 if (DBG) { 7711 loge("WifiStateMachine starting scan, " + 7712 " did not find channels -> full"); 7713 } 7714 lastFullBandConnectedTimeMilli = now_ms; 7715 if (fullBandConnectedTimeIntervalMilli 7716 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7717 // Increase the interval 7718 fullBandConnectedTimeIntervalMilli 7719 = fullBandConnectedTimeIntervalMilli 7720 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7721 7722 if (DBG) { 7723 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7724 + fullBandConnectedTimeIntervalMilli); 7725 } 7726 } 7727 handleScanRequest( 7728 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7729 } 7730 } 7731 7732 } else { 7733 loge("CMD_START_SCAN : connected mode and no configuration"); 7734 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7735 } 7736 } else { 7737 // Not scan alarm source 7738 return NOT_HANDLED; 7739 } 7740 break; 7741 /* Ignore connection to same network */ 7742 case WifiManager.CONNECT_NETWORK: 7743 int netId = message.arg1; 7744 if (mWifiInfo.getNetworkId() == netId) { 7745 break; 7746 } 7747 return NOT_HANDLED; 7748 /* Ignore */ 7749 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7750 break; 7751 case CMD_RSSI_POLL: 7752 if (message.arg1 == mRssiPollToken) { 7753 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7754 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7755 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7756 if (stats != null) { 7757 // Sanity check the results provided by driver 7758 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7759 && (stats.rssi_mgmt == 0 7760 || stats.beacon_rx == 0)) { 7761 stats = null; 7762 } 7763 } 7764 // Get Info and continue polling 7765 fetchRssiLinkSpeedAndFrequencyNative(); 7766 calculateWifiScore(stats); 7767 } 7768 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7769 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7770 7771 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7772 } else { 7773 // Polling has completed 7774 } 7775 break; 7776 case CMD_ENABLE_RSSI_POLL: 7777 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7778 mEnableRssiPolling = (message.arg1 == 1); 7779 } else { 7780 mEnableRssiPolling = false; 7781 } 7782 mRssiPollToken++; 7783 if (mEnableRssiPolling) { 7784 // First poll 7785 fetchRssiLinkSpeedAndFrequencyNative(); 7786 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7787 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7788 } else { 7789 cleanWifiScore(); 7790 } 7791 break; 7792 case WifiManager.RSSI_PKTCNT_FETCH: 7793 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7794 fetchRssiLinkSpeedAndFrequencyNative(); 7795 info.rssi = mWifiInfo.getRssi(); 7796 fetchPktcntNative(info); 7797 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7798 break; 7799 case CMD_DELAYED_NETWORK_DISCONNECT: 7800 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7801 7802 // Ignore if we are not debouncing 7803 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7804 + message.arg1); 7805 return HANDLED; 7806 } else { 7807 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7808 + message.arg1); 7809 7810 linkDebouncing = false; 7811 // If we are still debouncing while this message comes, 7812 // it means we were not able to reconnect within the alloted time 7813 // = LINK_FLAPPING_DEBOUNCE_MSEC 7814 // and thus, trigger a real disconnect 7815 handleNetworkDisconnect(); 7816 transitionTo(mDisconnectedState); 7817 } 7818 break; 7819 case CMD_ASSOCIATED_BSSID: 7820 if ((String) message.obj == null) { 7821 loge("Associated command w/o BSSID"); 7822 break; 7823 } 7824 mLastBssid = (String) message.obj; 7825 if (mLastBssid != null 7826 && (mWifiInfo.getBSSID() == null 7827 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7828 mWifiInfo.setBSSID((String) message.obj); 7829 sendNetworkStateChangeBroadcast(mLastBssid); 7830 } 7831 break; 7832 default: 7833 return NOT_HANDLED; 7834 } 7835 7836 return HANDLED; 7837 } 7838 } 7839 7840 class ObtainingIpState extends State { 7841 @Override 7842 public void enter() { 7843 if (DBG) { 7844 String key = ""; 7845 if (getCurrentWifiConfiguration() != null) { 7846 key = getCurrentWifiConfiguration().configKey(); 7847 } 7848 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7849 + " " + key + " " 7850 + " roam=" + mAutoRoaming 7851 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7852 + " watchdog= " + obtainingIpWatchdogCount); 7853 } 7854 7855 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7856 // We might still be roaming 7857 linkDebouncing = false; 7858 7859 // Send event to CM & network change broadcast 7860 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7861 7862 // We must clear the config BSSID, as the wifi chipset may decide to roam 7863 // from this point on and having the BSSID specified in the network block would 7864 // cause the roam to faile and the device to disconnect 7865 clearCurrentConfigBSSID("ObtainingIpAddress"); 7866 7867 try { 7868 mNwService.enableIpv6(mInterfaceName); 7869 } catch (RemoteException re) { 7870 loge("Failed to enable IPv6: " + re); 7871 } catch (IllegalStateException e) { 7872 loge("Failed to enable IPv6: " + e); 7873 } 7874 7875 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7876 if (isRoaming()) { 7877 renewDhcp(); 7878 } else { 7879 // Remove any IP address on the interface in case we're switching from static 7880 // IP configuration to DHCP. This is safe because if we get here when not 7881 // roaming, we don't have a usable address. 7882 clearIPv4Address(mInterfaceName); 7883 startDhcp(); 7884 } 7885 obtainingIpWatchdogCount++; 7886 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7887 // Get Link layer stats so as we get fresh tx packet counters 7888 getWifiLinkLayerStats(true); 7889 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7890 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7891 } else { 7892 // stop any running dhcp before assigning static IP 7893 stopDhcp(); 7894 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7895 mLastNetworkId); 7896 if (config.ipAddress == null) { 7897 loge("Static IP lacks address"); 7898 sendMessage(CMD_STATIC_IP_FAILURE); 7899 } else { 7900 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7901 ifcg.setLinkAddress(config.ipAddress); 7902 ifcg.setInterfaceUp(); 7903 try { 7904 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7905 if (DBG) log("Static IP configuration succeeded"); 7906 DhcpResults dhcpResults = new DhcpResults(config); 7907 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7908 } catch (RemoteException re) { 7909 loge("Static IP configuration failed: " + re); 7910 sendMessage(CMD_STATIC_IP_FAILURE); 7911 } catch (IllegalStateException e) { 7912 loge("Static IP configuration failed: " + e); 7913 sendMessage(CMD_STATIC_IP_FAILURE); 7914 } 7915 } 7916 } 7917 } 7918 @Override 7919 public boolean processMessage(Message message) { 7920 logStateAndMessage(message, getClass().getSimpleName()); 7921 7922 switch(message.what) { 7923 case CMD_STATIC_IP_SUCCESS: 7924 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7925 break; 7926 case CMD_STATIC_IP_FAILURE: 7927 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7928 break; 7929 case CMD_AUTO_CONNECT: 7930 case CMD_AUTO_ROAM: 7931 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7932 break; 7933 case WifiManager.SAVE_NETWORK: 7934 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7935 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7936 deferMessage(message); 7937 break; 7938 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7939 case CMD_SET_HIGH_PERF_MODE: 7940 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7941 deferMessage(message); 7942 break; 7943 /* Defer scan request since we should not switch to other channels at DHCP */ 7944 case CMD_START_SCAN: 7945 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7946 deferMessage(message); 7947 break; 7948 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7949 if (message.arg1 == obtainingIpWatchdogCount) { 7950 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7951 + obtainingIpWatchdogCount); 7952 handleIpConfigurationLost(); 7953 transitionTo(mDisconnectingState); 7954 break; 7955 } 7956 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7957 break; 7958 default: 7959 return NOT_HANDLED; 7960 } 7961 return HANDLED; 7962 } 7963 } 7964 7965 class VerifyingLinkState extends State { 7966 @Override 7967 public void enter() { 7968 log(getName() + " enter"); 7969 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7970 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7971 sendNetworkStateChangeBroadcast(mLastBssid); 7972 // End roaming 7973 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7974 } 7975 @Override 7976 public boolean processMessage(Message message) { 7977 logStateAndMessage(message, getClass().getSimpleName()); 7978 7979 switch (message.what) { 7980 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7981 // Stay here 7982 log(getName() + " POOR_LINK_DETECTED: no transition"); 7983 break; 7984 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7985 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7986 7987 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7988 sendConnectedState(); 7989 transitionTo(mConnectedState); 7990 break; 7991 default: 7992 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7993 return NOT_HANDLED; 7994 } 7995 return HANDLED; 7996 } 7997 } 7998 7999 private void sendConnectedState() { 8000 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 8001 // existing behaviour. The captive portal check really happens after we 8002 // transition into DetailedState.CONNECTED. 8003 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 8004 mWifiConfigStore.updateStatus(mLastNetworkId, 8005 DetailedState.CAPTIVE_PORTAL_CHECK); 8006 sendNetworkStateChangeBroadcast(mLastBssid); 8007 8008 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 8009 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 8010 } 8011 8012 setNetworkDetailedState(DetailedState.CONNECTED); 8013 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 8014 sendNetworkStateChangeBroadcast(mLastBssid); 8015 } 8016 8017 class RoamingState extends State { 8018 boolean mAssociated; 8019 @Override 8020 public void enter() { 8021 if (DBG) { 8022 log("RoamingState Enter" 8023 + " mScreenOn=" + mScreenOn ); 8024 } 8025 setScanAlarm(false); 8026 8027 // Make sure we disconnect if roaming fails 8028 roamWatchdogCount++; 8029 loge("Start Roam Watchdog " + roamWatchdogCount); 8030 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 8031 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 8032 mAssociated = false; 8033 } 8034 @Override 8035 public boolean processMessage(Message message) { 8036 logStateAndMessage(message, getClass().getSimpleName()); 8037 WifiConfiguration config; 8038 switch (message.what) { 8039 case CMD_IP_CONFIGURATION_LOST: 8040 config = getCurrentWifiConfiguration(); 8041 if (config != null) { 8042 mWifiConfigStore.noteRoamingFailure(config, 8043 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 8044 } 8045 return NOT_HANDLED; 8046 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8047 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 8048 return HANDLED; 8049 case CMD_UNWANTED_NETWORK: 8050 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 8051 return HANDLED; 8052 case CMD_SET_OPERATIONAL_MODE: 8053 if (message.arg1 != CONNECT_MODE) { 8054 deferMessage(message); 8055 } 8056 break; 8057 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8058 /** 8059 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 8060 * before NETWORK_DISCONNECTION_EVENT 8061 * And there is an associated BSSID corresponding to our target BSSID, then 8062 * we have missed the network disconnection, transition to mDisconnectedState 8063 * and handle the rest of the events there. 8064 */ 8065 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8066 if (stateChangeResult.state == SupplicantState.DISCONNECTED 8067 || stateChangeResult.state == SupplicantState.INACTIVE 8068 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 8069 if (DBG) { 8070 log("STATE_CHANGE_EVENT in roaming state " 8071 + stateChangeResult.toString() ); 8072 } 8073 if (stateChangeResult.BSSID != null 8074 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 8075 handleNetworkDisconnect(); 8076 transitionTo(mDisconnectedState); 8077 } 8078 } 8079 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 8080 // We completed the layer2 roaming part 8081 mAssociated = true; 8082 if (stateChangeResult.BSSID != null) { 8083 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 8084 } 8085 } 8086 break; 8087 case CMD_ROAM_WATCHDOG_TIMER: 8088 if (roamWatchdogCount == message.arg1) { 8089 if (DBG) log("roaming watchdog! -> disconnect"); 8090 mRoamFailCount++; 8091 handleNetworkDisconnect(); 8092 mWifiNative.disconnect(); 8093 transitionTo(mDisconnectedState); 8094 } 8095 break; 8096 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8097 if (mAssociated) { 8098 if (DBG) log("roaming and Network connection established"); 8099 mLastNetworkId = message.arg1; 8100 mLastBssid = (String) message.obj; 8101 mWifiInfo.setBSSID(mLastBssid); 8102 mWifiInfo.setNetworkId(mLastNetworkId); 8103 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 8104 sendNetworkStateChangeBroadcast(mLastBssid); 8105 transitionTo(mObtainingIpState); 8106 } else { 8107 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8108 } 8109 break; 8110 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8111 // Throw away but only if it corresponds to the network we're roaming to 8112 String bssid = (String)message.obj; 8113 if (true) { 8114 String target = ""; 8115 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 8116 log("NETWORK_DISCONNECTION_EVENT in roaming state" 8117 + " BSSID=" + bssid 8118 + " target=" + target); 8119 } 8120 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 8121 handleNetworkDisconnect(); 8122 transitionTo(mDisconnectedState); 8123 } 8124 break; 8125 case WifiMonitor.SSID_TEMP_DISABLED: 8126 // Auth error while roaming 8127 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 8128 + " id=" + Integer.toString(message.arg1) 8129 + " isRoaming=" + isRoaming() 8130 + " roam=" + Integer.toString(mAutoRoaming)); 8131 if (message.arg1 == mLastNetworkId) { 8132 config = getCurrentWifiConfiguration(); 8133 if (config != null) { 8134 mWifiConfigStore.noteRoamingFailure(config, 8135 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 8136 } 8137 handleNetworkDisconnect(); 8138 transitionTo(mDisconnectingState); 8139 } 8140 return NOT_HANDLED; 8141 case CMD_START_SCAN: 8142 deferMessage(message); 8143 break; 8144 default: 8145 return NOT_HANDLED; 8146 } 8147 return HANDLED; 8148 } 8149 8150 @Override 8151 public void exit() { 8152 loge("WifiStateMachine: Leaving Roaming state"); 8153 } 8154 } 8155 8156 class ConnectedState extends State { 8157 @Override 8158 public void enter() { 8159 String address; 8160 updateDefaultRouteMacAddress(1000); 8161 if (DBG) { 8162 log("ConnectedState EEnter " 8163 + " mScreenOn=" + mScreenOn 8164 + " scanperiod=" 8165 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli.get()) ); 8166 } 8167 8168 configureLazyRoam(); 8169 if (mScreenOn 8170 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 8171 if (mAlwaysOnPnoSupported) { 8172 startPno(); 8173 } else { 8174 // restart scan alarm 8175 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli.get(), 8176 null, null); 8177 } 8178 } 8179 registerConnected(); 8180 lastConnectAttempt = 0; 8181 targetWificonfiguration = null; 8182 // Paranoia 8183 linkDebouncing = false; 8184 8185 // Not roaming anymore 8186 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8187 8188 if (testNetworkDisconnect) { 8189 testNetworkDisconnectCounter++; 8190 loge("ConnectedState Enter start disconnect test " + 8191 testNetworkDisconnectCounter); 8192 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 8193 testNetworkDisconnectCounter, 0), 15000); 8194 } 8195 8196 // Reenable all networks, allow for hidden networks to be scanned 8197 mWifiConfigStore.enableAllNetworks(); 8198 8199 mLastDriverRoamAttempt = 0; 8200 8201 //startLazyRoam(); 8202 } 8203 @Override 8204 public boolean processMessage(Message message) { 8205 WifiConfiguration config = null; 8206 logStateAndMessage(message, getClass().getSimpleName()); 8207 8208 switch (message.what) { 8209 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8210 if (DBG) log("Watchdog reports poor link"); 8211 transitionTo(mVerifyingLinkState); 8212 break; 8213 case CMD_UNWANTED_NETWORK: 8214 if (message.arg1 == network_status_unwanted_disconnect) { 8215 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8216 mWifiNative.disconnect(); 8217 transitionTo(mDisconnectingState); 8218 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8219 config = getCurrentWifiConfiguration(); 8220 if (config != null) { 8221 // Disable autojoin 8222 config.numNoInternetAccessReports += 1; 8223 } 8224 } 8225 return HANDLED; 8226 case CMD_NETWORK_STATUS: 8227 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8228 config = getCurrentWifiConfiguration(); 8229 if (config != null) { 8230 // re-enable autojoin 8231 config.numNoInternetAccessReports = 0; 8232 config.validatedInternetAccess = true; 8233 } 8234 } 8235 return HANDLED; 8236 case CMD_TEST_NETWORK_DISCONNECT: 8237 // Force a disconnect 8238 if (message.arg1 == testNetworkDisconnectCounter) { 8239 mWifiNative.disconnect(); 8240 } 8241 break; 8242 case CMD_ASSOCIATED_BSSID: 8243 // ASSOCIATING to a new BSSID while already connected, indicates 8244 // that driver is roaming 8245 mLastDriverRoamAttempt = System.currentTimeMillis(); 8246 String toBSSID = (String)message.obj; 8247 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8248 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8249 } 8250 return NOT_HANDLED; 8251 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8252 long lastRoam = 0; 8253 if (mLastDriverRoamAttempt != 0) { 8254 // Calculate time since last driver roam attempt 8255 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8256 mLastDriverRoamAttempt = 0; 8257 } 8258 config = getCurrentWifiConfiguration(); 8259 if (mScreenOn 8260 && !linkDebouncing 8261 && config != null 8262 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8263 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8264 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8265 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8266 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8267 && mWifiInfo.getRssi() > 8268 WifiConfiguration.BAD_RSSI_24) 8269 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8270 && mWifiInfo.getRssi() > 8271 WifiConfiguration.BAD_RSSI_5))) { 8272 // Start de-bouncing the L2 disconnection: 8273 // this L2 disconnection might be spurious. 8274 // Hence we allow 7 seconds for the state machine to try 8275 // to reconnect, go thru the 8276 // roaming cycle and enter Obtaining IP address 8277 // before signalling the disconnect to ConnectivityService and L3 8278 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8279 linkDebouncing = true; 8280 8281 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8282 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8283 if (DBG) { 8284 log("NETWORK_DISCONNECTION_EVENT in connected state" 8285 + " BSSID=" + mWifiInfo.getBSSID() 8286 + " RSSI=" + mWifiInfo.getRssi() 8287 + " freq=" + mWifiInfo.getFrequency() 8288 + " reason=" + message.arg2 8289 + " -> debounce"); 8290 } 8291 return HANDLED; 8292 } else { 8293 if (DBG) { 8294 int ajst = -1; 8295 if (config != null) ajst = config.autoJoinStatus; 8296 log("NETWORK_DISCONNECTION_EVENT in connected state" 8297 + " BSSID=" + mWifiInfo.getBSSID() 8298 + " RSSI=" + mWifiInfo.getRssi() 8299 + " freq=" + mWifiInfo.getFrequency() 8300 + " was debouncing=" + linkDebouncing 8301 + " reason=" + message.arg2 8302 + " ajst=" + ajst); 8303 } 8304 } 8305 break; 8306 case CMD_AUTO_ROAM: 8307 // Clear the driver roam indication since we are attempting a framerwork roam 8308 mLastDriverRoamAttempt = 0; 8309 8310 /* Connect command coming from auto-join */ 8311 ScanResult candidate = (ScanResult)message.obj; 8312 String bssid = "any"; 8313 if (candidate != null && candidate.is5GHz()) { 8314 // Only lock BSSID for 5GHz networks 8315 bssid = candidate.BSSID; 8316 } 8317 int netId = mLastNetworkId; 8318 config = getCurrentWifiConfiguration(); 8319 8320 8321 if (config == null) { 8322 loge("AUTO_ROAM and no config, bail out..."); 8323 break; 8324 } 8325 8326 loge("CMD_AUTO_ROAM sup state " 8327 + mSupplicantStateTracker.getSupplicantStateName() 8328 + " my state " + getCurrentState().getName() 8329 + " nid=" + Integer.toString(netId) 8330 + " config " + config.configKey() 8331 + " roam=" + Integer.toString(message.arg2) 8332 + " to " + bssid 8333 + " targetRoamBSSID " + mTargetRoamBSSID); 8334 8335 /* Save the BSSID so as to lock it @ firmware */ 8336 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8337 loge("AUTO_ROAM nothing to do"); 8338 // Same BSSID, nothing to do 8339 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8340 break; 8341 }; 8342 8343 // Make sure the network is enabled, since supplicant will not reenable it 8344 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8345 8346 boolean ret = false; 8347 if (mLastNetworkId != netId) { 8348 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 8349 mWifiNative.reconnect()) { 8350 ret = true; 8351 } 8352 } else { 8353 ret = mWifiNative.reassociate(); 8354 } 8355 if (ret) { 8356 lastConnectAttempt = System.currentTimeMillis(); 8357 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8358 8359 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8360 mAutoRoaming = message.arg2; 8361 transitionTo(mRoamingState); 8362 8363 } else { 8364 loge("Failed to connect config: " + config + " netId: " + netId); 8365 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8366 WifiManager.ERROR); 8367 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8368 break; 8369 } 8370 break; 8371 default: 8372 return NOT_HANDLED; 8373 } 8374 return HANDLED; 8375 } 8376 8377 @Override 8378 public void exit() { 8379 loge("WifiStateMachine: Leaving Connected state"); 8380 setScanAlarm(false); 8381 mLastDriverRoamAttempt = 0; 8382 8383 stopLazyRoam(); 8384 } 8385 } 8386 8387 class DisconnectingState extends State { 8388 8389 @Override 8390 public void enter() { 8391 8392 if (PDBG) { 8393 loge(" Enter DisconnectingState State scan interval " 8394 + mWifiConfigStore.wifiDisconnectedScanIntervalMs 8395 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8396 + " screenOn=" + mScreenOn); 8397 } 8398 8399 // Make sure we disconnect: we enter this state prior connecting to a new 8400 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 8401 // event which in this case will be indicating that supplicant started to associate. 8402 // In some cases supplicant doesn't ignore the connect requests (it might not 8403 // find the target SSID in its cache), 8404 // Therefore we end up stuck that state, hence the need for the watchdog. 8405 disconnectingWatchdogCount++; 8406 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8407 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8408 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8409 } 8410 8411 @Override 8412 public boolean processMessage(Message message) { 8413 logStateAndMessage(message, getClass().getSimpleName()); 8414 switch (message.what) { 8415 case CMD_SET_OPERATIONAL_MODE: 8416 if (message.arg1 != CONNECT_MODE) { 8417 deferMessage(message); 8418 } 8419 break; 8420 case CMD_START_SCAN: 8421 deferMessage(message); 8422 return HANDLED; 8423 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8424 if (disconnectingWatchdogCount == message.arg1) { 8425 if (DBG) log("disconnecting watchdog! -> disconnect"); 8426 handleNetworkDisconnect(); 8427 transitionTo(mDisconnectedState); 8428 } 8429 break; 8430 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8431 /** 8432 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8433 * we have missed the network disconnection, transition to mDisconnectedState 8434 * and handle the rest of the events there 8435 */ 8436 deferMessage(message); 8437 handleNetworkDisconnect(); 8438 transitionTo(mDisconnectedState); 8439 break; 8440 default: 8441 return NOT_HANDLED; 8442 } 8443 return HANDLED; 8444 } 8445 } 8446 8447 class DisconnectedState extends State { 8448 @Override 8449 public void enter() { 8450 // We dont scan frequently if this is a temporary disconnect 8451 // due to p2p 8452 if (mTemporarilyDisconnectWifi) { 8453 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8454 return; 8455 } 8456 8457 if (PDBG) { 8458 loge(" Enter disconnected State scan interval " 8459 + mWifiConfigStore.wifiDisconnectedScanIntervalMs.get() 8460 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8461 + " screenOn=" + mScreenOn); 8462 } 8463 8464 /** clear the roaming state, if we were roaming, we failed */ 8465 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8466 8467 if (!startPno()) { 8468 if (mScreenOn) { 8469 /** 8470 * screen lit and => delayed timer 8471 */ 8472 startDelayedScan(mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(), 8473 null, null); 8474 } else { 8475 /** 8476 * screen dark and PNO supported => scan alarm disabled 8477 */ 8478 if (mEnableBackgroundScan) { 8479 /* If a regular scan result is pending, do not initiate background 8480 * scan until the scan results are returned. This is needed because 8481 * initiating a background scan will cancel the regular scan and 8482 * scan results will not be returned until background scanning is 8483 * cleared 8484 */ 8485 if (!mIsScanOngoing) { 8486 enableBackgroundScan(true); 8487 } 8488 } else { 8489 setScanAlarm(true); 8490 } 8491 } 8492 } 8493 8494 /** 8495 * If we have no networks saved, the supplicant stops doing the periodic scan. 8496 * The scans are useful to notify the user of the presence of an open network. 8497 * Note that these are not wake up scans. 8498 */ 8499 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8500 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8501 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8502 } 8503 8504 mDisconnectedTimeStamp = System.currentTimeMillis(); 8505 8506 } 8507 @Override 8508 public boolean processMessage(Message message) { 8509 boolean ret = HANDLED; 8510 8511 logStateAndMessage(message, getClass().getSimpleName()); 8512 8513 switch (message.what) { 8514 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8515 if (mP2pConnected.get()) break; 8516 if (message.arg1 == mPeriodicScanToken && 8517 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8518 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8519 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8520 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8521 } 8522 break; 8523 case WifiManager.FORGET_NETWORK: 8524 case CMD_REMOVE_NETWORK: 8525 // Set up a delayed message here. After the forget/remove is handled 8526 // the handled delayed message will determine if there is a need to 8527 // scan and continue 8528 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8529 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8530 ret = NOT_HANDLED; 8531 break; 8532 case CMD_SET_OPERATIONAL_MODE: 8533 if (message.arg1 != CONNECT_MODE) { 8534 mOperationalMode = message.arg1; 8535 8536 mWifiConfigStore.disableAllNetworks(); 8537 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8538 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8539 setWifiState(WIFI_STATE_DISABLED); 8540 } 8541 transitionTo(mScanModeState); 8542 } 8543 mWifiConfigStore. 8544 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8545 break; 8546 /* Ignore network disconnect */ 8547 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8548 break; 8549 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8550 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8551 if (DBG) { 8552 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8553 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8554 + " debouncing=" + linkDebouncing); 8555 } 8556 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8557 /* ConnectModeState does the rest of the handling */ 8558 ret = NOT_HANDLED; 8559 break; 8560 case CMD_START_SCAN: 8561 if (!checkOrDeferScanAllowed(message)) { 8562 // The scan request was rescheduled 8563 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8564 return HANDLED; 8565 } 8566 /* Disable background scan temporarily during a regular scan */ 8567 if (mEnableBackgroundScan) { 8568 enableBackgroundScan(false); 8569 } 8570 if (message.arg1 == SCAN_ALARM_SOURCE) { 8571 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8572 // not be processed) and restart the scan 8573 int period = mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(); 8574 if (mP2pConnected.get()) { 8575 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8576 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8577 period); 8578 } 8579 if (!checkAndRestartDelayedScan(message.arg2, 8580 true, period, null, null)) { 8581 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8582 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8583 + message.arg1 8584 + " " + message.arg2 + ", " + mDelayedScanCounter 8585 + " -> obsolete"); 8586 return HANDLED; 8587 } 8588 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8589 ret = HANDLED; 8590 } else { 8591 ret = NOT_HANDLED; 8592 } 8593 break; 8594 case WifiMonitor.SCAN_RESULTS_EVENT: 8595 /* Re-enable background scan when a pending scan result is received */ 8596 if (mEnableBackgroundScan && mIsScanOngoing) { 8597 enableBackgroundScan(true); 8598 } 8599 /* Handled in parent state */ 8600 ret = NOT_HANDLED; 8601 break; 8602 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8603 NetworkInfo info = (NetworkInfo) message.obj; 8604 mP2pConnected.set(info.isConnected()); 8605 if (mP2pConnected.get()) { 8606 int defaultInterval = mContext.getResources().getInteger( 8607 R.integer.config_wifi_scan_interval_p2p_connected); 8608 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8609 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8610 defaultInterval); 8611 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8612 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8613 if (DBG) log("Turn on scanning after p2p disconnected"); 8614 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8615 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8616 } else { 8617 // If P2P is not connected and there are saved networks, then restart 8618 // scanning at the normal period. This is necessary because scanning might 8619 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8620 // was set to zero. 8621 if (!startPno()) { 8622 startDelayedScan(mWifiConfigStore.wifiDisconnectedScanIntervalMs.get(), 8623 null, null); 8624 } 8625 } 8626 break; 8627 case CMD_RECONNECT: 8628 case CMD_REASSOCIATE: 8629 if (mTemporarilyDisconnectWifi) { 8630 // Drop a third party reconnect/reassociate if STA is 8631 // temporarily disconnected for p2p 8632 break; 8633 } else { 8634 // ConnectModeState handles it 8635 ret = NOT_HANDLED; 8636 } 8637 break; 8638 case CMD_SCREEN_STATE_CHANGED: 8639 handleScreenStateChanged(message.arg1 != 0, 8640 /* startBackgroundScanIfNeeded = */ true); 8641 break; 8642 default: 8643 ret = NOT_HANDLED; 8644 } 8645 return ret; 8646 } 8647 8648 @Override 8649 public void exit() { 8650 /* No need for a background scan upon exit from a disconnected state */ 8651 if (mEnableBackgroundScan) { 8652 enableBackgroundScan(false); 8653 } 8654 setScanAlarm(false); 8655 } 8656 } 8657 8658 class WpsRunningState extends State { 8659 // Tracks the source to provide a reply 8660 private Message mSourceMessage; 8661 @Override 8662 public void enter() { 8663 mSourceMessage = Message.obtain(getCurrentMessage()); 8664 } 8665 @Override 8666 public boolean processMessage(Message message) { 8667 logStateAndMessage(message, getClass().getSimpleName()); 8668 8669 switch (message.what) { 8670 case WifiMonitor.WPS_SUCCESS_EVENT: 8671 // Ignore intermediate success, wait for full connection 8672 break; 8673 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8674 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8675 mSourceMessage.recycle(); 8676 mSourceMessage = null; 8677 deferMessage(message); 8678 transitionTo(mDisconnectedState); 8679 break; 8680 case WifiMonitor.WPS_OVERLAP_EVENT: 8681 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8682 WifiManager.WPS_OVERLAP_ERROR); 8683 mSourceMessage.recycle(); 8684 mSourceMessage = null; 8685 transitionTo(mDisconnectedState); 8686 break; 8687 case WifiMonitor.WPS_FAIL_EVENT: 8688 // Arg1 has the reason for the failure 8689 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8690 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8691 mSourceMessage.recycle(); 8692 mSourceMessage = null; 8693 transitionTo(mDisconnectedState); 8694 } else { 8695 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8696 } 8697 break; 8698 case WifiMonitor.WPS_TIMEOUT_EVENT: 8699 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8700 WifiManager.WPS_TIMED_OUT); 8701 mSourceMessage.recycle(); 8702 mSourceMessage = null; 8703 transitionTo(mDisconnectedState); 8704 break; 8705 case WifiManager.START_WPS: 8706 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8707 break; 8708 case WifiManager.CANCEL_WPS: 8709 if (mWifiNative.cancelWps()) { 8710 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8711 } else { 8712 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8713 } 8714 transitionTo(mDisconnectedState); 8715 break; 8716 /** 8717 * Defer all commands that can cause connections to a different network 8718 * or put the state machine out of connect mode 8719 */ 8720 case CMD_STOP_DRIVER: 8721 case CMD_SET_OPERATIONAL_MODE: 8722 case WifiManager.CONNECT_NETWORK: 8723 case CMD_ENABLE_NETWORK: 8724 case CMD_RECONNECT: 8725 case CMD_REASSOCIATE: 8726 deferMessage(message); 8727 break; 8728 case CMD_AUTO_CONNECT: 8729 case CMD_AUTO_ROAM: 8730 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8731 return HANDLED; 8732 case CMD_START_SCAN: 8733 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8734 return HANDLED; 8735 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8736 if (DBG) log("Network connection lost"); 8737 handleNetworkDisconnect(); 8738 break; 8739 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8740 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8741 break; 8742 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8743 // Disregard auth failure events during WPS connection. The 8744 // EAP sequence is retried several times, and there might be 8745 // failures (especially for wps pin). We will get a WPS_XXX 8746 // event at the end of the sequence anyway. 8747 if (DBG) log("Ignore auth failure during WPS connection"); 8748 break; 8749 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8750 // Throw away supplicant state changes when WPS is running. 8751 // We will start getting supplicant state changes once we get 8752 // a WPS success or failure 8753 break; 8754 default: 8755 return NOT_HANDLED; 8756 } 8757 return HANDLED; 8758 } 8759 8760 @Override 8761 public void exit() { 8762 mWifiConfigStore.enableAllNetworks(); 8763 mWifiConfigStore.loadConfiguredNetworks(); 8764 } 8765 } 8766 8767 class SoftApStartingState extends State { 8768 @Override 8769 public void enter() { 8770 final Message message = getCurrentMessage(); 8771 if (message.what == CMD_START_AP) { 8772 final WifiConfiguration config = (WifiConfiguration) message.obj; 8773 8774 if (config == null) { 8775 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8776 } else { 8777 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8778 startSoftApWithConfig(config); 8779 } 8780 } else { 8781 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8782 } 8783 } 8784 @Override 8785 public boolean processMessage(Message message) { 8786 logStateAndMessage(message, getClass().getSimpleName()); 8787 8788 switch(message.what) { 8789 case CMD_START_SUPPLICANT: 8790 case CMD_STOP_SUPPLICANT: 8791 case CMD_START_AP: 8792 case CMD_STOP_AP: 8793 case CMD_START_DRIVER: 8794 case CMD_STOP_DRIVER: 8795 case CMD_SET_OPERATIONAL_MODE: 8796 case CMD_SET_COUNTRY_CODE: 8797 case CMD_SET_FREQUENCY_BAND: 8798 case CMD_START_PACKET_FILTERING: 8799 case CMD_STOP_PACKET_FILTERING: 8800 case CMD_TETHER_STATE_CHANGE: 8801 deferMessage(message); 8802 break; 8803 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8804 WifiConfiguration config = (WifiConfiguration) message.obj; 8805 if (config != null) { 8806 startSoftApWithConfig(config); 8807 } else { 8808 loge("Softap config is null!"); 8809 sendMessage(CMD_START_AP_FAILURE); 8810 } 8811 break; 8812 case CMD_START_AP_SUCCESS: 8813 setWifiApState(WIFI_AP_STATE_ENABLED); 8814 transitionTo(mSoftApStartedState); 8815 break; 8816 case CMD_START_AP_FAILURE: 8817 setWifiApState(WIFI_AP_STATE_FAILED); 8818 transitionTo(mInitialState); 8819 break; 8820 default: 8821 return NOT_HANDLED; 8822 } 8823 return HANDLED; 8824 } 8825 } 8826 8827 class SoftApStartedState extends State { 8828 @Override 8829 public boolean processMessage(Message message) { 8830 logStateAndMessage(message, getClass().getSimpleName()); 8831 8832 switch(message.what) { 8833 case CMD_STOP_AP: 8834 if (DBG) log("Stopping Soft AP"); 8835 /* We have not tethered at this point, so we just shutdown soft Ap */ 8836 try { 8837 mNwService.stopAccessPoint(mInterfaceName); 8838 } catch(Exception e) { 8839 loge("Exception in stopAccessPoint()"); 8840 } 8841 setWifiApState(WIFI_AP_STATE_DISABLED); 8842 transitionTo(mInitialState); 8843 break; 8844 case CMD_START_AP: 8845 // Ignore a start on a running access point 8846 break; 8847 // Fail client mode operation when soft AP is enabled 8848 case CMD_START_SUPPLICANT: 8849 loge("Cannot start supplicant with a running soft AP"); 8850 setWifiState(WIFI_STATE_UNKNOWN); 8851 break; 8852 case CMD_TETHER_STATE_CHANGE: 8853 TetherStateChange stateChange = (TetherStateChange) message.obj; 8854 if (startTethering(stateChange.available)) { 8855 transitionTo(mTetheringState); 8856 } 8857 break; 8858 default: 8859 return NOT_HANDLED; 8860 } 8861 return HANDLED; 8862 } 8863 } 8864 8865 class TetheringState extends State { 8866 @Override 8867 public void enter() { 8868 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8869 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8870 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8871 } 8872 @Override 8873 public boolean processMessage(Message message) { 8874 logStateAndMessage(message, getClass().getSimpleName()); 8875 8876 switch(message.what) { 8877 case CMD_TETHER_STATE_CHANGE: 8878 TetherStateChange stateChange = (TetherStateChange) message.obj; 8879 if (isWifiTethered(stateChange.active)) { 8880 transitionTo(mTetheredState); 8881 } 8882 return HANDLED; 8883 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8884 if (message.arg1 == mTetherToken) { 8885 loge("Failed to get tether update, shutdown soft access point"); 8886 transitionTo(mSoftApStartedState); 8887 // Needs to be first thing handled 8888 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8889 } 8890 break; 8891 case CMD_START_SUPPLICANT: 8892 case CMD_STOP_SUPPLICANT: 8893 case CMD_START_AP: 8894 case CMD_STOP_AP: 8895 case CMD_START_DRIVER: 8896 case CMD_STOP_DRIVER: 8897 case CMD_SET_OPERATIONAL_MODE: 8898 case CMD_SET_COUNTRY_CODE: 8899 case CMD_SET_FREQUENCY_BAND: 8900 case CMD_START_PACKET_FILTERING: 8901 case CMD_STOP_PACKET_FILTERING: 8902 deferMessage(message); 8903 break; 8904 default: 8905 return NOT_HANDLED; 8906 } 8907 return HANDLED; 8908 } 8909 } 8910 8911 class TetheredState extends State { 8912 @Override 8913 public boolean processMessage(Message message) { 8914 logStateAndMessage(message, getClass().getSimpleName()); 8915 8916 switch(message.what) { 8917 case CMD_TETHER_STATE_CHANGE: 8918 TetherStateChange stateChange = (TetherStateChange) message.obj; 8919 if (!isWifiTethered(stateChange.active)) { 8920 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8921 setHostApRunning(null, false); 8922 setHostApRunning(null, true); 8923 } 8924 return HANDLED; 8925 case CMD_STOP_AP: 8926 if (DBG) log("Untethering before stopping AP"); 8927 setWifiApState(WIFI_AP_STATE_DISABLING); 8928 stopTethering(); 8929 transitionTo(mUntetheringState); 8930 // More work to do after untethering 8931 deferMessage(message); 8932 break; 8933 default: 8934 return NOT_HANDLED; 8935 } 8936 return HANDLED; 8937 } 8938 } 8939 8940 class UntetheringState extends State { 8941 @Override 8942 public void enter() { 8943 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8944 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8945 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8946 8947 } 8948 @Override 8949 public boolean processMessage(Message message) { 8950 logStateAndMessage(message, getClass().getSimpleName()); 8951 8952 switch(message.what) { 8953 case CMD_TETHER_STATE_CHANGE: 8954 TetherStateChange stateChange = (TetherStateChange) message.obj; 8955 8956 /* Wait till wifi is untethered */ 8957 if (isWifiTethered(stateChange.active)) break; 8958 8959 transitionTo(mSoftApStartedState); 8960 break; 8961 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8962 if (message.arg1 == mTetherToken) { 8963 loge("Failed to get tether update, force stop access point"); 8964 transitionTo(mSoftApStartedState); 8965 } 8966 break; 8967 case CMD_START_SUPPLICANT: 8968 case CMD_STOP_SUPPLICANT: 8969 case CMD_START_AP: 8970 case CMD_STOP_AP: 8971 case CMD_START_DRIVER: 8972 case CMD_STOP_DRIVER: 8973 case CMD_SET_OPERATIONAL_MODE: 8974 case CMD_SET_COUNTRY_CODE: 8975 case CMD_SET_FREQUENCY_BAND: 8976 case CMD_START_PACKET_FILTERING: 8977 case CMD_STOP_PACKET_FILTERING: 8978 deferMessage(message); 8979 break; 8980 default: 8981 return NOT_HANDLED; 8982 } 8983 return HANDLED; 8984 } 8985 } 8986 8987 //State machine initiated requests can have replyTo set to null indicating 8988 //there are no recepients, we ignore those reply actions 8989 private void replyToMessage(Message msg, int what) { 8990 if (msg.replyTo == null) return; 8991 Message dstMsg = obtainMessageWithArg2(msg); 8992 dstMsg.what = what; 8993 mReplyChannel.replyToMessage(msg, dstMsg); 8994 } 8995 8996 private void replyToMessage(Message msg, int what, int arg1) { 8997 if (msg.replyTo == null) return; 8998 Message dstMsg = obtainMessageWithArg2(msg); 8999 dstMsg.what = what; 9000 dstMsg.arg1 = arg1; 9001 mReplyChannel.replyToMessage(msg, dstMsg); 9002 } 9003 9004 private void replyToMessage(Message msg, int what, Object obj) { 9005 if (msg.replyTo == null) return; 9006 Message dstMsg = obtainMessageWithArg2(msg); 9007 dstMsg.what = what; 9008 dstMsg.obj = obj; 9009 mReplyChannel.replyToMessage(msg, dstMsg); 9010 } 9011 9012 /** 9013 * arg2 on the source message has a unique id that needs to be retained in replies 9014 * to match the request 9015 9016 * see WifiManager for details 9017 */ 9018 private Message obtainMessageWithArg2(Message srcMsg) { 9019 Message msg = Message.obtain(); 9020 msg.arg2 = srcMsg.arg2; 9021 return msg; 9022 } 9023 9024 private static int parseHex(char ch) { 9025 if ('0' <= ch && ch <= '9') { 9026 return ch - '0'; 9027 } else if ('a' <= ch && ch <= 'f') { 9028 return ch - 'a' + 10; 9029 } else if ('A' <= ch && ch <= 'F') { 9030 return ch - 'A' + 10; 9031 } else { 9032 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 9033 } 9034 } 9035 9036 private byte[] parseHex(String hex) { 9037 /* This only works for good input; don't throw bad data at it */ 9038 if (hex == null) { 9039 return new byte[0]; 9040 } 9041 9042 if (hex.length() % 2 != 0) { 9043 throw new NumberFormatException(hex + " is not a valid hex string"); 9044 } 9045 9046 byte[] result = new byte[(hex.length())/2 + 1]; 9047 result[0] = (byte) ((hex.length())/2); 9048 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 9049 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 9050 byte b = (byte) (val & 0xFF); 9051 result[j] = b; 9052 } 9053 9054 return result; 9055 } 9056 9057 private static String makeHex(byte[] bytes) { 9058 StringBuilder sb = new StringBuilder(); 9059 for (byte b : bytes) { 9060 sb.append(String.format("%02x", b)); 9061 } 9062 return sb.toString(); 9063 } 9064 9065 private static String makeHex(byte[] bytes, int from, int len) { 9066 StringBuilder sb = new StringBuilder(); 9067 for (int i = 0; i < len; i++) { 9068 sb.append(String.format("%02x", bytes[from+i])); 9069 } 9070 return sb.toString(); 9071 } 9072 9073 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 9074 9075 int len = array1.length + array2.length + array3.length; 9076 9077 if (array1.length != 0) { 9078 len++; /* add another byte for size */ 9079 } 9080 9081 if (array2.length != 0) { 9082 len++; /* add another byte for size */ 9083 } 9084 9085 if (array3.length != 0) { 9086 len++; /* add another byte for size */ 9087 } 9088 9089 byte[] result = new byte[len]; 9090 9091 int index = 0; 9092 if (array1.length != 0) { 9093 result[index] = (byte) (array1.length & 0xFF); 9094 index++; 9095 for (byte b : array1) { 9096 result[index] = b; 9097 index++; 9098 } 9099 } 9100 9101 if (array2.length != 0) { 9102 result[index] = (byte) (array2.length & 0xFF); 9103 index++; 9104 for (byte b : array2) { 9105 result[index] = b; 9106 index++; 9107 } 9108 } 9109 9110 if (array3.length != 0) { 9111 result[index] = (byte) (array3.length & 0xFF); 9112 index++; 9113 for (byte b : array3) { 9114 result[index] = b; 9115 index++; 9116 } 9117 } 9118 return result; 9119 } 9120 9121 private static byte[] concatHex(byte[] array1, byte[] array2) { 9122 9123 int len = array1.length + array2.length; 9124 9125 byte[] result = new byte[len]; 9126 9127 int index = 0; 9128 if (array1.length != 0) { 9129 for (byte b : array1) { 9130 result[index] = b; 9131 index++; 9132 } 9133 } 9134 9135 if (array2.length != 0) { 9136 for (byte b : array2) { 9137 result[index] = b; 9138 index++; 9139 } 9140 } 9141 9142 return result; 9143 } 9144 9145 void handleGsmAuthRequest(SimAuthRequestData requestData) { 9146 if (targetWificonfiguration == null 9147 || targetWificonfiguration.networkId == requestData.networkId) { 9148 logd("id matches targetWifiConfiguration"); 9149 } else { 9150 logd("id does not match targetWifiConfiguration"); 9151 return; 9152 } 9153 9154 TelephonyManager tm = (TelephonyManager) 9155 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9156 9157 if (tm != null) { 9158 StringBuilder sb = new StringBuilder(); 9159 for (String challenge : requestData.data) { 9160 9161 if (challenge == null || challenge.isEmpty()) 9162 continue; 9163 logd("RAND = " + challenge); 9164 9165 byte[] rand = null; 9166 try { 9167 rand = parseHex(challenge); 9168 } catch (NumberFormatException e) { 9169 loge("malformed challenge"); 9170 continue; 9171 } 9172 9173 String base64Challenge = android.util.Base64.encodeToString( 9174 rand, android.util.Base64.NO_WRAP); 9175 /* 9176 * First, try with appType = 2 => USIM according to 9177 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 9178 */ 9179 int appType = 2; 9180 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9181 if (tmResponse == null) { 9182 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 9183 * appType = 1 => SIM 9184 */ 9185 appType = 1; 9186 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9187 } 9188 logv("Raw Response - " + tmResponse); 9189 9190 if (tmResponse != null && tmResponse.length() > 4) { 9191 byte[] result = android.util.Base64.decode(tmResponse, 9192 android.util.Base64.DEFAULT); 9193 logv("Hex Response -" + makeHex(result)); 9194 int sres_len = result[0]; 9195 String sres = makeHex(result, 1, sres_len); 9196 int kc_offset = 1+sres_len; 9197 int kc_len = result[kc_offset]; 9198 String kc = makeHex(result, 1+kc_offset, kc_len); 9199 sb.append(":" + kc + ":" + sres); 9200 logv("kc:" + kc + " sres:" + sres); 9201 } else { 9202 loge("bad response - " + tmResponse); 9203 } 9204 } 9205 9206 String response = sb.toString(); 9207 logv("Supplicant Response -" + response); 9208 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 9209 } else { 9210 loge("could not get telephony manager"); 9211 } 9212 } 9213 9214 void handle3GAuthRequest(SimAuthRequestData requestData) { 9215 StringBuilder sb = new StringBuilder(); 9216 byte[] rand = null; 9217 byte[] authn = null; 9218 String res_type = "UMTS-AUTH"; 9219 9220 if (targetWificonfiguration == null 9221 || targetWificonfiguration.networkId == requestData.networkId) { 9222 logd("id matches targetWifiConfiguration"); 9223 } else { 9224 logd("id does not match targetWifiConfiguration"); 9225 return; 9226 } 9227 if (requestData.data.length == 2) { 9228 try { 9229 rand = parseHex(requestData.data[0]); 9230 authn = parseHex(requestData.data[1]); 9231 } catch (NumberFormatException e) { 9232 loge("malformed challenge"); 9233 } 9234 } else { 9235 loge("malformed challenge"); 9236 } 9237 9238 String tmResponse = ""; 9239 if (rand != null && authn != null) { 9240 String base64Challenge = android.util.Base64.encodeToString( 9241 concatHex(rand,authn), android.util.Base64.NO_WRAP); 9242 9243 TelephonyManager tm = (TelephonyManager) 9244 mContext.getSystemService(Context.TELEPHONY_SERVICE); 9245 if (tm != null) { 9246 int appType = 2; // 2 => USIM 9247 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 9248 logv("Raw Response - " + tmResponse); 9249 } else { 9250 loge("could not get telephony manager"); 9251 } 9252 } 9253 9254 if (tmResponse != null && tmResponse.length() > 4) { 9255 byte[] result = android.util.Base64.decode(tmResponse, 9256 android.util.Base64.DEFAULT); 9257 loge("Hex Response - " + makeHex(result)); 9258 byte tag = result[0]; 9259 if (tag == (byte) 0xdb) { 9260 logv("successful 3G authentication "); 9261 int res_len = result[1]; 9262 String res = makeHex(result, 2, res_len); 9263 int ck_len = result[res_len + 2]; 9264 String ck = makeHex(result, res_len + 3, ck_len); 9265 int ik_len = result[res_len + ck_len + 3]; 9266 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 9267 sb.append(":" + ik + ":" + ck + ":" + res); 9268 logv("ik:" + ik + "ck:" + ck + " res:" + res); 9269 } else if (tag == (byte) 0xdc) { 9270 loge("synchronisation failure"); 9271 int auts_len = result[1]; 9272 String auts = makeHex(result, 2, auts_len); 9273 res_type = "UMTS-AUTS"; 9274 sb.append(":" + auts); 9275 logv("auts:" + auts); 9276 } else { 9277 loge("bad response - unknown tag = " + tag); 9278 return; 9279 } 9280 } else { 9281 loge("bad response - " + tmResponse); 9282 return; 9283 } 9284 9285 String response = sb.toString(); 9286 logv("Supplicant Response -" + response); 9287 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 9288 } 9289} 9290